TWI896078B - Child safety seat - Google Patents

Abstract

The present disclosure provides a child safety seat. The child safety seat includes a seat part; a support plate disposed at a front end of the seat part and be slidable and telescopic with respect to the seat part; and a base configured to place the seat part. The support plate includes a support plate body and a first connecting element. One end of the first connecting element is fixed on the support plate body. The other end of the first connecting element extends from the support plate body and is inserted into the seat part, so that the support plate can be slidably connected to the seat part. The support plate according to the present disclosure can be used in conjunction with different vehicle models, and can provide a larger space for legs of a child sitting on the child safety seat so as to provide more safety and comfort experience.

Description

Child safety seat

The present disclosure relates to the field of children's products, specifically to a child safety seat, and more specifically to a seat angle adjustment mechanism and a child safety seat having a seat angle adjustment mechanism.

In recent years, with growing attention paid to children's travel safety, more and more people are choosing to use child safety seats. These seats may be equipped with a support plate at the front to abut against the backrest of the car seat when used rear-facing, preventing the child safety seat from tipping over.

In addition, some child safety seats are equipped with a seat angle adjustment mechanism to provide different seat angles for children riding in the child safety seat.

In one embodiment, the present disclosure provides a child safety seat. The child safety seat includes a seat; a support plate disposed at the front end of the seat and capable of sliding and extending relative to the seat; and a base for mounting the seat. The support plate includes a support plate body and a first connector, one end of which is fixed to the support plate body. The other end of the first connector extends from the support plate body and engages with the seat, thereby enabling the support plate to be slidably connected to the seat.

In one embodiment, a second connecting member is provided on the upper surface of the support plate body, and the second connecting member is slidably engaged with the lower surface of the seat portion, wherein the second connecting member is a guide rib or a guide groove.

In one embodiment, the support plate is provided with a support plate adjustment mechanism for adjusting the length of the support plate extending from the seat. The support plate adjustment mechanism includes a positioning structure movably disposed on the support plate body to position the support plate at at least one position on the seat.

In one embodiment, the positioning structure includes a first locking member disposed on the support plate body and movable between a locked position and an unlocked position. A second locking member is disposed on the lower surface of the seat. A through-hole is formed through the upper surface of the support plate body. An engaging end of the first locking member can extend and retract from the through-hole to engage and disengage with the second locking member.

In one embodiment, the first locking member is a positioning hook pivoted to the lower surface of the support plate body. The positioning hook is pivotable such that in the locked position, the engagement end extends from the upper surface of the support plate body, but in the unlocked position, the engagement end retracts into the support plate body.

In one embodiment, the first locking member is a positioning pin, and the second locking member is a positioning hole.

In one embodiment, a plurality of the second locking members are provided along the front-to-rear direction of the seat. The positioning structure further includes an elastic member configured to bias the first locking member toward extending out of the through hole.

In one embodiment, the support plate adjustment mechanism further includes an operating mechanism, at least partially movably disposed on the support plate. The operating mechanism includes an operating member slidably disposed on the support plate and capable of sliding between a locked position and a released position. When the operating member is in the locked position, the operating member drives the positioning structure to lock the support plate and the seat, thereby restricting movement of the support plate relative to the seat. When the operating member is in the released position, the operating member drives the positioning structure to unlock, thereby allowing movement of the support plate relative to the seat.

In one embodiment, the first connecting member includes two connecting rods disposed on either side of the support plate body. The operating member has two ends respectively sleeved on the two connecting rods, thereby enabling sliding movement along the extension direction of the connecting rods. The operating member is provided with a pushing rib having a guiding slope. When the operating member slides, the guiding slope abuts against the first locking member, causing it to move from the locked position to the unlocked position.

In one embodiment, the positioning structure includes a first positioning structure and a second positioning structure, the first and second positioning structures being disposed on opposite sides of the support plate body, respectively. The support plate adjustment mechanism further includes a first and second pull members. One end of the first pull member is connected to the operating member, and the other end is connected to the first positioning structure. One end of the second pull member is connected to the operating member, and the other end is connected to the second positioning structure. When the operating member slides from a locked position to a released position, the first pull member pulls the first positioning structure to unlock, and the second pull member pulls the second positioning structure to unlock. At least one of the first and second pull members is a flexible element.

In one embodiment, the operating mechanism includes: two operating members, one slidably disposed on either side of the support plate and capable of sliding between a locked position and a released position, with at least a portion of each operating member exposed from the support plate; two driving members, one slidably disposed on the support plate and capable of moving in response to the corresponding operating member being operated; and two traction member assemblies, each traction member assembly comprising a first traction member and a second traction member. The first traction member is configured to be connected between the operating member and the driving member, both located on the same side of the support plate, to interlock the driving member with the operating member. The second traction member is connected between the operating member located on one side of the support plate and the driving member located on the other side of the support plate.

In one embodiment, the first lead member includes a first lead wire having a first end, a wire portion, and a second end. The first end and the second end of the first lead wire are respectively fixedly connected to the operating member and the driving member on the same side, so that when the operating member is operated, the driving member is driven to move.

In one embodiment, the first lead member further includes a first sheath, which is disposed on the first lead wire.

In one embodiment, the first lead member includes a first lead wire and a first sheath. The first end of the first lead wire is fixedly connected to the driving member on the same side, and the second end of the first lead wire is fixedly connected to the support plate. The first sheath is disposed over the first lead wire, with the first end of the first sheath abutting the support plate and the second end of the first sheath connected to the operating member.

In one embodiment, the second lead member includes a second lead wire and a second sheath. The first end of the second lead wire is connected to the operating member on one side of the support plate, and the second end of the second lead wire is connected to the driving member on the other side of the support plate. The second sheath is disposed over the second lead wire, with the first end of the second sheath being fixed to one side of the support plate and the second end of the second sheath being fixed to the other side of the support plate.

In one embodiment, the first locking member is fixedly mounted on a fixed seat at the end of the support plate. The operating mechanism is provided with an inclined slot that slidably engages with the fixed seat via a linkage pin provided on the fixed seat. When the operating mechanism is operated, the operating mechanism moves the fixed seat via the inclined slot, thereby disengaging the first locking member from the seat.

In one embodiment, the support plate body is provided with a limiting rib, and the seat portion includes a cover located at the front side. The cover portion is provided with a limiting groove. The straight section of the limiting rib can be blocked by the blocking portion of the limiting groove to prevent the support plate from separating from the seat portion.

The present disclosure provides a child safety seat. The child safety seat comprises: a seat; a support plate disposed at the front end of the seat and capable of sliding and extending relative to the seat; a positioning structure movably disposed on the support plate body to position the support plate at at least one position of the seat; and an operating mechanism disposed on the support plate to drive the positioning structure to lock and release the support plate and the seat, wherein the operating mechanism comprises: two operating members, respectively disposed on both sides of the support plate or the seat; two driving members, respectively movably disposed on the support plate and the seat; The support plate is provided with a plurality of guide members, each of which is configured to move when the corresponding operating member is operated; and two guide member assemblies, each of which includes a first guide member and a second guide member, wherein the first guide member is configured to be connected between the operating member and the driving member on the same side of the support plate to enable the driving member and the operating member to be interlocked, and the second guide member is configured to be connected between the operating member on one side of the support plate and the driving member on the other side of the support plate, wherein at least one of the first guide member and the second guide member is a flexible element.

In one embodiment, the child safety seat further includes a base for accommodating the seat, and the seat can slide relative to the base to adjust the tilt angle.

In another embodiment, the present disclosure further proposes a headrest height adjustment mechanism, comprising: an operating member slidably disposed on the headrest, the operating member having an initial position, a first operating position, and a second operating position relative to the headrest; a locking assembly for locking with the height adjustment gear, the locking assembly having a locking position and a release position and being switchable between the locking position and the release position; and a safety locking mechanism, comprising a limit member disposed on the operating member and a stop member disposed on the locking member. The locking member is engaged with the locking member on the locking assembly, and the limiting member cooperates with the locking member to lock the locking assembly in the locking position. Switching the operating member from the initial position to the first operating position causes the limiting member to separate from the locking member, allowing the safety locking mechanism to release the locking assembly. Switching the operating member from the first operating position to the second operating position causes the locking assembly to switch from the locking position to the unlocking position.

In one embodiment, the headrest height adjustment mechanism further includes a driving member, one end of which is slidably connected to the operating member, and the other end of which abuts the locking assembly. When the operating member is switched from the first operating position to the second operating position, the driving member moves and drives the locking assembly from the locked position to the unlocked position.

In one embodiment, the locking assembly is driven by the driving member to rotatably switch between the locking position and the unlocking position.

In one embodiment, the locking assembly includes a locking body and a locking rod for locking with the height adjustment gear. One end of the locking body has a pivoting portion pivotally connected to the headrest, and the locking rod is fixed to the other end of the locking body.

In one embodiment, the limiting member is a stop pin provided on the operating member, and the engaging member is an engaging groove provided on the locking body. The stop pin is inserted into the engaging groove to lock the locking assembly in the locking position. When the stop pin is disengaged from the engaging groove, the safety locking mechanism releases the locking assembly.

In one embodiment, the operating member includes a handle and a transmission member connected to the handle, the stop pin is connected to the transmission member, and the extension direction of the stop pin is the same as the movement direction of the transmission member.

In one embodiment, the locking body is provided with a mating bevel, and the driving member is provided with a driving bevel corresponding to the mating bevel. Movement of the driving member causes the driving bevel to press against the mating bevel, thereby causing the locking rod to rotate relative to the pivot portion.

In one embodiment, the locking assembly further includes a first elastic member abutting against the locking body, wherein the first elastic member provides an elastic force that keeps the locking rod locked in the height adjustment position.

In one embodiment, the operating member is provided with a sliding groove, and the driving member includes a pulling member located within the sliding groove. When the operating member moves between the initial position and the first operating position, the pulling member slides within the sliding groove. When the operating member switches from the first operating position to the second operating position, the pulling member moves with the operating member and drives the locking assembly from the locked position to the unlocked position.

In one embodiment, the headrest height adjustment mechanism further includes a second elastic member disposed between the headrest and the operating member, wherein the second elastic member provides an elastic force to maintain the operating member in the initial position.

In one embodiment, the operating member is provided with a receiving groove and a hanging hole adjacent to the receiving groove. One end of the second elastic member is fixed to the hanging hole. The main body of the second elastic member is located in the receiving groove. One end of the second elastic member is fixed to the headrest.

A child carrier comprises a carrier body, a headrest movably mounted on the carrier body, and a headrest height adjustment mechanism as described above, located between the carrier body and the headrest. The carrier body includes a height adjustment position that is locked with the locking assembly of the headrest height adjustment mechanism.

In one embodiment, the vehicle body includes a backrest, the headrest is movably mounted on the backrest, and the height adjustment mechanism is mounted on the backrest. The height of the headrest can be adjusted relative to the backrest by cooperating with the height adjustment mechanism.

In one embodiment, the headrest includes a fixed cover, and the hinge portion of the locking body is rotatably mounted on the fixed cover.

The headrest height adjustment mechanism includes a safety lock mechanism, and the operating member has an initial position, a first operating position, and a second operating position. The safety lock mechanism releases the lock assembly when the operating member switches from the initial position to the first operating position, allowing subsequent unlocking operations to proceed only when the operating member switches to the first operating position. Simultaneously, one end of the driver is slidably mounted on the operating member, while the other end of the driver abuts the lock assembly. Switching the operating member from the first operating position to the second operating position causes the driver to move, driving the lock assembly from the locked position to the released position, thereby unlocking the headrest. In other words, when the operating member is in the initial position, the safety lock mechanism securely locks the locking rod of the locking assembly to the height adjustment position. Even if the child carrier is impacted during emergency braking, the locking rod will not easily disengage from the height adjustment position, thereby reducing the possibility of shifting and improving the safety of the child carrier.

In another embodiment, the present disclosure provides a crotch strap length adjustment device for a child carrier, comprising: a crotch strap having a movable end detachably connected to a seat portion of the child carrier, wherein the movable end is provided with a plurality of crotch strap adjustment structures arranged along the length of the crotch strap; and an adjustment connector disposed on the seat portion, capable of engaging with one of the crotch strap adjustment structures on the movable end to prevent the corresponding crotch strap from leaving the seat portion, and capable of disengaging from the crotch strap adjustment structure to allow the corresponding crotch strap to leave the seat portion.

In one embodiment, the crotch strap adjustment structure is one or more of an adjustment sleeve, an adjustment ring, an adjustment hook, and an adjustment rod.

In one embodiment, the crotch strap adjustment structure is an adjustment sleeve formed by folding the end of the crotch strap multiple times relative to itself.

In one embodiment, the adjustment link is disposed on the seat portion so as to be movable between a first position and a second position, and the adjustment link is configured to engage with one of the crotch strap adjustment structures in the first position and to disengage from the crotch strap adjustment structure in the second position.

In one embodiment, the adjustment connector has a connector engagement portion that engages with or disengages from one of the crotch strap adjustment structures.

In one embodiment, the seat is provided with a seat connection hole, and the connector engaging portion of the adjustment connector is received in the seat connection hole after being engaged with one of the crotch strap adjustment structures.

In one embodiment, the crotch strap length adjustment device further includes: an adjustment operating member disposed so as to be exposed from the seat portion and capable of being subjected to an applied force to drive the adjustment connecting member to move between the first position and the second position.

In one embodiment, the adjustment operating member is movably arranged on the seat, and the adjustment connecting member is connected to the adjustment operating member.

In one embodiment, the adjustment connector further includes a connector driving portion connected to the adjustment operating member.

In one embodiment, the adjustment operating member is provided with an operating member fixing hole, the connector driving portion is provided with a connector fixing hole, and a connector fixing structure passes through the operating member fixing hole and the connector fixing hole to connect the adjustment connector to the adjustment operating member.

In one embodiment, the cross-section of the connector driver portion is non-circular, and the adjustment operating member is provided with an operating member connecting groove. The cross-section of the operating member connecting groove corresponds in shape and size to the cross-section of the connector driver portion, such that the connector driver portion cannot rotate within the operating member connecting groove.

In one embodiment, the crotch strap length adjustment device further includes: an operating member guide structure disposed on the seat and configured to guide the movement of the adjustment operating member.

In one embodiment, the operating member guide structure is a bar-shaped structure, with its two ends fixed to the seat via guide structure fixing members.

In one embodiment, the crotch strap length adjustment device further includes: an operating member reset elastic member configured to directly or indirectly drive the adjustment connecting member to move toward the first position and maintain it in the first position.

In one embodiment, the operating member return spring is a tension spring having a first return spring end and a second return spring end. The first return spring end is connected to the return spring connection structure on the seat, and the second return spring end is connected to the return spring connection portion on the adjustment operating member.

In one embodiment, the adjustment operating member is provided with a resetting elastic member receiving portion for receiving the resetting elastic member of the operating member.

In one embodiment, the crotch strap is provided with a buckle.

In one embodiment, the buckle is provided with a buckle through-hole for the crotch strap to pass through.

In one embodiment, the crotch strap has a first end and a second end, and at least one of the first end and the second end is the active end.

In another embodiment, the present disclosure also provides a child carrier, wherein the child carrier employs the aforementioned crotch strap length adjustment device.

The crotch strap length adjustment device disclosed herein can adjust the crotch strap length in different gears.

The foregoing and other objects, features, aspects, and advantages of the present disclosure will become more apparent from the following detailed description of the present disclosure in conjunction with the accompanying drawings.

100: Support plate

110: Support plate body

110A: Top surface

110B: Lower surface

110C: Through hole

111: Limiting rib

111A: Straight Section

120: Second connecting piece

130: First locking element

131: Joint end

140: Operating element

141: Pushing Ribs

150: Connecting rod

160: Elastic parts

200: Seat

210: Cover

211: Limiting slot

211A: Blocking section

220: Sliding piece

230: Second locking piece

250: Connection hole

300: Support plate

310: Support plate body

311: Upper cover

312: Lower cover

312A: Window

313: Baseboard

313a: Extension

3131: Storage Tank

320: First connecting piece

330: Second connecting piece

340: Support plate adjustment mechanism

341: Operating parts

3411: Chute

342: Elastic parts

343: Positioning structure

3431: First locking element

3432: Fixed seat

3433:Return spring

3434: Linking pin

350: First limiter

400: Seat

401: Connection hole

402: Slider

410A: Sliding member

410B: Sliding member

410C: Connecting column

421: Release operating member

422: Connecting components

423: Reset component

424: Angle locking structure

4241: Locking pin

4242: Snap-fit reset member

430: Second locking element

440: Second limiter

500: Base

510: Engagement hole

520A: Sliding fit components

520B: Sliding fit components

600: Support plate

610: Support plate body

611: Upper cover

612: Lower cover

613: Base Plate

620: First connecting piece

640: Support plate adjustment mechanism

641: Operating parts

642: Elastic parts

643: Positioning structure

6431: First locking element

6432: Fixed seat

6434: Linking pin

644: Traction piece

6441: First traction element

6441a: First lead line

6441b: First sheath

6442: Second traction element

6442a: Second lead line

6442b: Second sheath

645:Driver

6451: Drive return spring

6452: Chute

700: Seat

730: Second locking piece

M100: Child Carrier

M10: Headrest height adjustment mechanism

M12: Operating element

M122: Handle

M124: Transmission

M1242: Storage Tank

M1244: Hanging hole

M1246: Slide groove

M14: Locking assembly

M142: Lock the subject

M143: First elastic member

M144: Locking lever

M146: Joint

M147: Mating bevel

M148: Fixed part

M16: Safety lock mechanism

M162: Stop pin

M164: snap-in slot

M18:Driver

M181: Slot

M182: Main body

M183: Positioning hole

M184: Abutment

M186: Pull piece

M188: Driving ramp

M19: Second elastic member

M20: Vehicle body

M201: Height adjustment position

M202: Back-to-back

M30: Headrest

M32: Limit plate

M322: Limit slot

M34: Positioning Plate

M342: Fixed hook

M36: Fixed cover

N1: Child Carrier

N10: Seat

N112: Reset elastic connection structure

N20: Buckle

N21: Buckle perforation

N100: Hip strap

N101: First End

N101C: First hip strap adjustment mechanism

N102: Second end

N102C: Second hip strap adjustment mechanism

N300: Adjustment operating parts

N310: Operating element reset spring

N310A: Reset spring, first end

N310B: Second end of the reset spring

N311: Reset spring blocker

N320: Operating element guidance structure

N321: Guide structure fixings

N330: Operating element fixing hole

N340: Operating element connection slot

N350: Reset spring connection

N360: Operating part bearing force

N370: Reset spring housing

N400: Adjust the connector

N410: Connector joint

N420: Connector drive unit

N421: Connector fixing hole

N430: Connector fixing structure

The accompanying drawings are included herein to provide a further understanding of the present disclosure and are incorporated into and constitute a part of this specification. The accompanying drawings illustrate embodiments of the present disclosure and, together with the following description, serve to explain the concepts of the present disclosure.

FIG1 is a side view of a child safety seat provided with a support panel according to an embodiment of the present disclosure, wherein the support panel is in a retracted position.

FIG2A is a side view of a child safety seat provided with a support panel according to an embodiment of the present disclosure, wherein the support panel is in an extended position.

Figure 2B is a cross-sectional view and a partially enlarged view of the child safety seat taken along line "A-A" in Figure 2A.

Figure 3 is a perspective view and a partially enlarged view of the child safety seat in Figure 2A, viewed from below, with the support panel removed.

Figure 4 is a perspective view and a partially enlarged view of an example of a support plate according to an embodiment of the present disclosure.

FIG5 is a partially enlarged perspective view of the child safety seat in FIG2A as viewed from below.

FIG6 is a partially enlarged view of an example of a support plate according to an embodiment of the present disclosure, viewed from below.

Figure 7A is a bottom view of the child safety seat in Figure 2A.

Figure 7B is a cross-sectional view and a partially enlarged view of the child safety seat taken along line "B-B" in Figure 7A.

FIG8A is a perspective view of the child safety seat in FIG2A as viewed from above.

Figure 8B is a partial side cross-sectional view and an enlarged view of the child safety seat taken along line "C-C" in Figure 8A.

Figure 9 is a side sectional view and a partially enlarged view of the child safety seat in Figure 2A.

FIG10 shows a perspective view of a child safety seat according to another embodiment of the present disclosure.

FIG11 is a perspective view showing another state of the child safety seat shown in FIG10 .

FIG12 shows a side cross-sectional view of the child safety seat shown in FIG11.

FIG13 shows a perspective view of a child safety seat according to another embodiment of the present disclosure, viewed from another angle.

FIG14 shows a perspective view of a child safety seat according to another embodiment of the present disclosure, viewed from yet another angle.

Figure 15 shows a perspective view of a support plate according to another embodiment of the present disclosure.

FIG16 shows a partial perspective view of a child safety seat according to another embodiment of the present disclosure.

FIG17 shows a perspective view of a child safety seat according to another embodiment of the present disclosure, wherein the bottom cover between the support plate and the seat portion is removed.

FIG18 shows a partial perspective view of a child safety seat according to another embodiment of the present disclosure, wherein the upper cover of the support plate is removed.

FIG19 shows a partial perspective view of the child safety seat shown in FIG17 in another state.

Figure 20 shows a perspective view of a base according to another embodiment of the present disclosure.

FIG21 shows another partial perspective view of a child safety seat according to another embodiment of the present disclosure, wherein the upper cover of the support plate is removed.

Figure 22 shows a top partial perspective view of a support plate and a seat according to another embodiment of the present disclosure.

FIG23 shows a cross-sectional view taken along line "D-D" in FIG22.

FIG24 shows a perspective view of a support plate according to another embodiment of the present disclosure, with the upper cover and the bottom plate removed.

FIG25 shows another side cross-sectional view of a child safety seat according to another embodiment of the present disclosure.

FIG26 shows a perspective view of a child safety seat according to another embodiment of the present disclosure.

FIG27 is a perspective view showing another state of the child safety seat shown in FIG26.

FIG28 shows a perspective view of the child safety seat shown in FIG27 viewed from another angle.

Figure 29 shows a perspective view of the support plate shown in Figure 28.

Figure 30 shows another perspective view of the support plate shown in Figure 29, with the upper cover of the support plate removed.

FIG31 shows a partial perspective view of the child safety seat shown in FIG27 from another angle, with the upper cover of the support plate removed.

Figure 32 is a schematic perspective view of a child carrier according to one embodiment.

Figure 33 is a schematic diagram of the internal structure of the child carrier shown in Figure 32.

Figure 34 is a schematic three-dimensional diagram of a headrest height adjustment mechanism according to one embodiment.

Figure 35 is a three-dimensional exploded view of the headrest height adjustment mechanism shown in Figure 34.

Figure 36 is an enlarged view of the locking body in Figure 35.

Figure 37 is an enlarged view of the operating member in Figure 35.

Figure 38 is a three-dimensional schematic diagram of the operating member and the locking assembly in one state.

Figure 39 is a three-dimensional schematic diagram of the operating member and the locking assembly in another state.

Figure 40 is an enlarged view of the drive member in Figure 35.

Figure 41A is a schematic perspective view of the operating member and locking assembly shown in Figure 38 from another angle.

Figure 41B is a front view of the operating member and the driving member when they are engaged.

Figure 42 is a cross-sectional view of the operating member in its initial position.

Figure 43 is a partial enlarged view of point A in Figure 42.

Figure 44 is a cross-sectional view of the operating member in the first operating position.

Figure 45 is a cross-sectional view of the operating member in the second operating position.

FIG46A is a schematic diagram of a child carrier that utilizes the crotch strap length adjustment device according to the present disclosure.

Figure 46B is a partial enlarged view of Figure 46A.

FIG47A is a schematic diagram of the child carrier shown in FIG46A , with a portion of the seat removed.

Figure 47B is a partial enlarged view of Figure 47A.

FIG48 is a schematic diagram of the crotch strap and buckle of the crotch strap length adjustment device according to the present disclosure shown in FIG46A.

FIG49A is a partial cross-sectional front view of the child carrier shown in FIG46A.

Figure 49B is a partial enlarged view of Figure 49A.

FIG50A is a side partial cross-sectional view of the child carrier shown in FIG46A, showing the connection state of the operating member return spring member.

Figure 50B is a partial enlarged view of Figure 50A.

FIG51A is a schematic diagram of the child carrier shown in FIG46A from another angle, and FIG51B is a partially enlarged view of FIG51A.

FIG52A is a side partial cross-sectional view of the child carrier shown in FIG46A, showing the adjustment connector in the first position.

Figure 52B is a partial enlarged view of Figure 52A.

FIG53A is a side partial cross-sectional view of the child carrier shown in FIG46A, showing the adjustment connector in the second position.

Figure 53B is a partial enlarged view of Figure 53A.

FIG54 is a schematic diagram of an embodiment of an adjustment operating member of the crotch strap length adjustment device according to the present disclosure.

FIG55 is a schematic diagram of the embodiment of the adjustment operating member shown in FIG54 from another angle.

FIG56 is a schematic diagram of an embodiment of an adjustment connector of a crotch strap length adjustment device according to the present disclosure.

Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. While the present disclosure is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the accompanying drawings. However, the present disclosure should not be construed as limited to the embodiments set forth herein; rather, the present disclosure is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure.

The present disclosure will be described in detail below with reference to the accompanying drawings.

In one embodiment of the present disclosure, a child safety seat (also referred to as a "child carrier" or "infant car seat") is provided. Specifically, Figures 1, 2A, and 2B illustrate a child safety seat provided with a support plate 100 according to the present disclosure. The support plate 100 is slidably connected to a seat portion 200 of the child safety seat, for example, to the front lower portion of the seat portion 200, and is capable of sliding and positioning back and forth between a retracted position shown in Figure 1 and an extended position shown in Figure 2A. Herein, with reference to Figure 1, the direction facing the child safety seat is defined as "front," and the direction facing away from the child safety seat is defined as "rear." By allowing the support plate 100 to slide forward and backward along the seat 200 and be positioned at different locations, the support plate 100 of the present disclosure can be used with different vehicle models and can provide more legroom for children, thereby providing a safer and more comfortable experience.

Specifically, the support plate 100 according to the present disclosure includes a support plate body 110 and a second connecting member 120 disposed on the support plate body 110. The support plate body 110 can be in the form of a plate, a block, or other shapes. The second connecting member 120 slidably engages with a sliding member 220 disposed on the seat 200, thereby enabling the support plate 100 to slide back and forth along the seat 200.

In one embodiment shown in Figures 2B, 3, and 4, the second connecting member 120 may be a sliding rib located on the upper surface 110A of the support plate body 110 (see Figure 4), and the sliding member 220 may be a sliding groove located on the lower surface of the seat 200 (see Figure 3). By inserting the sliding rib on the support plate body 110 of the support plate 100 into the sliding groove on the seat 200 and sliding the rib within the groove, the support plate 100 can slide back and forth along the seat 200.

Vice versa, the second connecting member 120 may also be a sliding groove located on the upper surface 110A of the support plate body 110, and the sliding member 220 may also be a sliding rib located on the lower surface of the seat 200.

Of course, the present disclosure is not limited to this. The second connecting member 120 provided on the support plate body 110 and the sliding member 220 provided on the seat 200 may also adopt other sliding fitting structures, as long as the support plate 100 can slide relative to the seat 200. For example, the second connecting member 120 may be a sliding rod provided on the support plate body 110, and the sliding member 220 may be a sliding ring provided on the seat 200.

In one embodiment, as shown in Figures 4 and 9 , the support plate 100 according to the present disclosure further includes a first connecting member secured to the support plate body 110. In this embodiment, the first connecting member may be a connecting rod or a connecting tube (also referred to as a "reinforcement rod" or "reinforcement tube"), but the present disclosure is not limited thereto. Below, the connecting rod 150 is used as an example. The seat 200 is formed with a connecting hole 250 for inserting the connecting rod 150. After the support plate 100 is assembled to the seat 200, the connecting rod 150 is inserted into the connecting hole 250. As the support plate 100 slides relative to the seat 200, the connecting rod 150 slides in the connecting hole 250. This not only guides the support plate 100 in its forward and backward sliding motion along the seat 200, but also significantly enhances the support capacity of the support plate 100 when the support plate 100 extends beyond the front side of the seat 200, particularly when the portion of the support plate 100 extending beyond the front side of the seat 200 is greater than the portion concealed by the lower surface of the seat 200.

In the embodiment shown in FIG4 , two connecting rods 150 are fixed to the support plate body 110 of the support plate 100, one located on the left and right sides of the support plate body 110, thereby evenly distributing the forces acting on the support plate 100. The number and shape of the connecting rods 150 can vary as needed. For example, there can be one, three, or more connecting rods 150. Furthermore, the connecting rods 150 can be not only tubular but also configured as connecting tubes, such as circular or square tubes, or non-hollow rods, although this disclosure is not limited thereto. Accordingly, the connecting holes 250 into which the connecting rods 150 are inserted can also have a corresponding number and shape. The material of the connecting rod 150 can be different from that of the support plate 100 and the seat 200. It can be, for example, a metal with strong rigidity, preferably stainless steel, carbon steel, etc.

It should be noted that the support plate 100 can also be slidably connected to the seat 200 solely via the first connecting member (such as the "connecting rod 150" in the above embodiment), that is, without the cooperation of the second connecting member and the sliding member. For details regarding this embodiment, please refer to the description below in conjunction with Figures 14 and 15.

To adjust the support plate 100 to different positions relative to the seat 200 when the support plate 100 slides between the extended and retracted positions, accommodating different vehicle models, the support plate 100 according to the present disclosure further includes a first locking member 130. The first locking member 130 is disposed on the support plate body 110 and is movable between a locked position and an unlocked position. When in the locked position, the first locking member 130 engages with a second locking member 230 on the seat 200 to position the support plate 100 relative to the seat 200. When the first locking member 130 is in the unlocked position, it disengages from the second locking member 230 on the seat 200, allowing the support plate 100 to slide relative to the seat 200 and adjust to a suitable position.

The first locking member 130 can be disposed on the lower surface 110B of the support plate body 110. When in the locked position, at least a portion of the first locking member 130 (e.g., the engagement end 131) can pass through a through-hole 110C in the support plate body 110 and extend or retract from the upper surface 110A of the support plate body 110, thereby engaging with or disengaging from the second locking member 230 on the seat 200. For example, in the embodiments shown in Figures 4, 6, and 7B, the first locking member 130 is a bar (see Figure 6) or a positioning hook pivotally connected to the lower surface 110B of the support plate body 110. The tab or hook is pivotable so that, in the locked position, the engagement end 131 thereof passes through the support plate body 110 and extends from the upper surface 110A of the support plate body 110 (see FIG. 4 ).

In the embodiment shown in FIG. 7B , the second locking member 230 is a positioning hole provided on the lower surface of the seat 200.

When the strip, serving as the first locking member 130, is in the locked position, the engaging end 131 extends through the support plate body 110 and out from the upper surface 110A of the support plate body 110, thereby engaging with the positioning hole, serving as the second locking member 230, on the seat 200, thereby positioning the support plate 100 relative to the seat 200. When the strip, serving as the first locking member 130, is in the unlocked position, the engaging end 131 retracts into the support plate body 110 and disengages from the positioning hole, serving as the second locking member 230, on the seat 200. At this point, the support plate 100 can slide freely relative to the seat 200.

It should be understood that multiple positioning holes serving as the second locking member 230 can be provided along the front-to-back direction of the seat 200. By engaging the engaging end 131 of the strip serving as the first locking member 130 with different positioning holes, the support plate 100 can be positioned at different locations relative to the seat 200 to accommodate different vehicle models.

Of course, the present disclosure is not limited to this. The first locking member 130 of the support plate 100 and the second locking member 230 on the seat 200 according to the present disclosure may adopt other mating structures, as long as these mating structures can achieve locking, positioning, and unlocking of the support plate 100 relative to the seat 200. For example, the first locking member 130 may be a positioning hole provided in the support plate body 110 of the support plate 100, and the second locking member 230 may be a bar provided on the seat 200. Alternatively, the first locking member 130 may be a positioning pin provided in the support plate body 110 of the support plate 100, and the second locking member 230 may be a positioning groove provided in the seat 200. Furthermore, the "positioning structure" used to position the seat portion to the base (corresponding to the first locking member 130 in this embodiment) may also refer to an assembly including multiple elements, parts, or components (rather than a single component). Reference may be made to the positioning structure 343 shown in the embodiments of Figures 22 and 23 , but the present disclosure is not limited thereto.

To facilitate user manipulation of the engagement and disengagement between the first locking member 130 of the support plate 100 and the second locking member 230 on the seat 200, the support plate 100 according to the present disclosure further includes an operating member 140. The operating member 140 is disposed on the support plate body 110 and is operable by the user to move the first locking member 130 between a locked position and an unlocked position. When the operating member 140 is operated by the user to move the first locking member 130 from the locked position to the unlocked position, the first locking member 130 of the support plate 100 disengages from the second locking member 230 on the seat 200. When the operating member 140 is operated by the user to move the first locking member 130 from the unlocked position to the locked position, the first locking member 130 of the support plate 100 engages with the second locking member 230 on the seat 200.

In the embodiment shown in Figure 5, the operating member 140 is a slidable handle disposed on the lower surface 110B of the support plate body 110. For example, the handle may be provided with a sliding groove that mates with the connecting rods 150, allowing the handle to slide along the connecting rods 150. More specifically, the two ends of the operating member 140 may be respectively sleeved onto the two connecting rods 150, allowing the handle to slide along the extending direction of the connecting rods 150. The handle is provided with a push rib 141. When a user needs to adjust the support plate 100, they pull the handle, which serves as the operating member 140. The pushing rib 141 on the handle pushes the first locking member 130 from the locked position to the unlocked position, thereby disengaging the first locking member 130 of the support plate 100 from the second locking member 230 on the seat 200. The support plate 100 can then be adjusted relative to the seat 200. Specifically, in one example, the pushing rib 141 has a guiding slope. When the operating member 140 is operated and slides relative to the connecting rod 150, the guiding slope of the pushing rib 141 can abut against the first locking member 130, causing it to move from the locked position to the unlocked position. For example, the guiding slope of the pushing rib 141 can abut against the end of the first locking member 130 opposite the engagement end 131, causing the first locking member 130 (e.g., a bar) to pivot, thereby disengaging the engagement end 131 from the second locking member 230 (e.g., a positioning hole).

Of course, the operating member 140 according to the present disclosure may also adopt other structures, as long as it can drive the first locking member 130 to move. For example, the operating member 140 can be a button or an operating lever. The user presses the button or pulls the operating lever to move the first locking member 130 between the locked and unlocked positions.

To make it easier for the user to operate the operating member 140, in the embodiment shown in FIG6 , the support plate 100 further includes an elastic member 160 configured to bias the first locking member 130 toward the locked position. In the embodiment shown in FIG6 , the elastic member 160 is a torsion spring disposed at the pivot axis of a bar serving as the first locking member 130. This torsion spring drives the bar serving as the first locking member 130 to pivot, causing the engaging end 131 thereon to pass through the support plate body 110 and extend from the upper surface 110A of the support plate body 110 to engage with a positioning hole in the seat 200 serving as the second locking member 230. By providing the elastic member 160, the user only needs to operate the operating member 140 to overcome the elastic force of the elastic member 160 and drive the first locking member 130 from the locked position to the unlocked position. The engagement end 131 retracts into the support plate body 110, thereby disengaging the first locking member 130 of the support plate 100 from the second locking member 230 on the seat 200. Once the user stops applying force to the operating member 140, the elastic member 160 biases the first locking member 130 from the unlocked position to the locked position. This not only makes the user's operation more convenient, but also simplifies the structure of the operating member 140 because the operating member 140 does not need to move the first locking member 130 from the unlocked position to the locked position.

It should be understood that the elastic member 160 in the present disclosure may also adopt a variety of elastic structures such as a compression spring, a tension spring, a hydraulic rod, or a pneumatic rod, as long as it can bias the first locking member 130 toward the locked position.

It will be appreciated that in the embodiment described above with reference to Figures 4 to 7B , the first locking member 130, and optionally the operating member 140 and the elastic member 160 included in the support plate 100 can be summarized as a support plate adjustment mechanism, used to adjust the support plate 100 to different positions relative to the seat 200. Of course, the support plate adjustment mechanism can also be configured in other different structures. For example, another support plate adjustment mechanism is described below with reference to Figures 21 to 24 .

To prevent the support plate 100 from separating from the seat 200, a limiting mechanism may be provided on the support plate 100. For example, the limiting mechanism may include a limiting rib and a limiting groove. Specifically, in the embodiment shown in Figures 8A and 8B, the support plate body 110 of the support plate 100 may also be provided with a limiting rib 111. Furthermore, the seat 200 may include a cover 210 located at the front side, with a limiting groove 211 provided on the cover 210. When the support plate 100 slides to its most extended position, the limiting rib 111 on the support plate body 110 is blocked by the limiting groove 211 on the cover 210, thereby preventing the support plate 100 from sliding further forward and separating from the seat 200. More specifically, referring to Figure 8B , when the support plate 100 slides to its most extended position, the straight section 111A of the limiting rib 111 is blocked by the blocking portion 211A of the limiting groove 211, thereby limiting the support plate body 100.

In addition, in another embodiment of the present disclosure, a child safety seat is also provided.

Refer to Figures 10 and 11, which respectively show different states of a child safety seat and a support plate 300 provided thereon according to another embodiment of the present disclosure.

Specifically, the child safety seat of this embodiment may include a seat 400 for a child to sit on and a base 500 for mounting the seat 400. The seat 400 is capable of sliding relative to the base 500 and may be positioned at various angles α relative to the base 500, where α is greater than or equal to zero. It should be noted that the "angle of the seat 400 relative to the base 500" herein refers to the angle between the plane defined by the child's seating position of the seat 400 or the bottom plane of the seat 400 and the base 500 (e.g., the plane supporting the seat 400). For example, Figures 10 and 11 respectively illustrate two different angles of the seat 400 relative to the base 500. Specifically, Figure 10 shows the seat 400 being substantially parallel to the base 500, i.e., angle α being approximately zero. Figure 11 shows the seat 400 relative to the base 500 at an angle α greater than zero, e.g., approximately 30° to 40°. Of course, the present disclosure is not limited to this.

Similar to the embodiment shown in FIG1 , another embodiment of the child safety seat disclosed herein may also be equipped with a support plate 300. As shown in FIG10 and FIG11 , the support plate 300 is slidably connected to the seat 400, allowing it to extend and retract from the front end of the seat 400. This allows it to abut against the backrest of a car seat when the child safety seat is used rearward, thereby preventing the seat from tipping over. Furthermore, the support plate 300 can provide calf support for a child seated in the seat 400. For example, the support plate 300 of this embodiment can slide and position itself between a retracted position shown in FIG10 and an extended position shown in FIG11 . The specific structure and arrangement of the support plate 300 of this embodiment will be described in detail below with reference to Figures 14 to 19.

Referring to Figures 12 and 13, Figure 12 shows a side cross-sectional view of the child safety seat shown in Figure 11, and Figure 13 shows a perspective view of the child safety seat viewed from another angle.

The seat 400 and base 500 of the disclosed child safety seat are capable of sliding relative to each other. Specifically, the seat 400 and base 500 can be slidably connected via cooperating components. For example, Figure 12 illustrates a sliding connection between the seat 400 and base 500 according to one example, while Figure 13 illustrates another example.

As shown in Figures 12 and 13, the seat 400 is slidably connected to the base 500 via at least one sliding assembly. Each sliding assembly includes a sliding member 410A and/or 410B and a sliding engagement member 520A and/or 520B. The sliding members 410A and/or 410B are disposed on the seat 400. The sliding engagement members 520A and/or 520B are disposed on the base 500 and slidably engage with the sliding members 410A and/or 410B, respectively.

In one example, as shown in FIG12 , the sliding member 410A is a screw secured to the bottom of the seat 400 via a connecting post 410C, while the sliding engagement member 520A is an arcuate slot extending on the upper surface of the base 500 along the direction in which the seat 400 slides relative to the base 500. In a preferred embodiment, at least one arcuate slot can be provided on the bottom side of the seat 400, located at the bottom surface where the seat 400 contacts the base 500, and a combination of at least one connecting post and at least one screw can be provided correspondingly on the upper surface of the base 500. Specifically, a connecting post 410C (e.g., a columnar structure with a threaded hole) is fixedly provided on the bottom side of the seat 400. The connecting post 410C extends into the arc-shaped long groove of the base 500. The screw is connected to the connecting post 410C so that it and the connecting post 410C can slide along the arc-shaped long groove, thereby realizing a sliding connection between the seat 400 and the base 500. Preferably, the diameter of the screw head is greater than the width of the arcuate slot on the upper surface of the base 500. Optionally, the cross-sectional shape of the arcuate slot can be adapted to the cross-sectional shapes of the screw and connecting post 410C, for example, forming an inverted T-shape. This allows the base 400 to be slidably connected to the base 500 without disengaging in a direction perpendicular to its sliding direction. That is, during the sliding movement of the base 400 relative to the base 500, the screw and connecting post will not disengage from the arcuate slot. It should be noted that the present disclosure is not limited to the number of arcuate slots, connecting posts, and screws described above or shown in the figures. Combinations of two or more arcuate slots and a corresponding number of connecting posts and screws are also contemplated. In other examples, the connecting post and screws can be provided on the base 500, while the arcuate slot can be provided on the seat 400. Furthermore, the present disclosure can also provide only the connecting post 410C (i.e., without the screws), and the shape of the connecting post 410C can be a hollow cylinder, a rectangular parallelepiped, a trapezoid, etc., but the present disclosure is not limited to this.

In another example, as shown in FIG13 , the sliding member 410B is a curved groove disposed on the bottom side of the seat 400, and the sliding mating member 520B is a corresponding latch disposed on the base 500. Preferably, at least two curved grooves may be disposed on the side surfaces of the seat 400 that contact the base 500, and at least two corresponding latches may be disposed on the base 500. For example, one curved groove may be disposed on each of the two inner surfaces of the seat 400, and one latch may be disposed on each location of the base 500 that mates with the inner surface of the seat 400. Of course, the present disclosure is not limited to this. In other examples, the positions of the curved grooves and latches may be interchanged, i.e., the curved grooves may be disposed on the base 500, while the latches may be disposed on the seat 400. Alternatively, a single latch can be provided on the seat 400, with both ends of the latch exposed on both sides of the seat 400 and engaging with the arc-shaped sliding grooves of the base 500, respectively.

It should be noted that the sliding members 410A and 410B and the sliding engagement members 520A and 520B described above can be provided simultaneously to further enhance the stability of the sliding connection between the seat and the base. Of course, the present disclosure is not limited to this embodiment; other sliding connection methods may also be employed or combined.

Referring to Figures 14 to 16 , Figure 14 shows a child safety seat according to another embodiment of the present disclosure, viewed from a different angle. Figure 15 shows a schematic structural diagram of the support plate 300 . Figure 16 shows a partial perspective view of the child safety seat, illustrating one method of connecting the seat 400 to the support plate 300 .

As shown in Figure 14 , the support plate 300 is slidably mounted on the seat 400 and can be extended and retracted from the front end of the seat 400. Further, referring to Figures 14 and 15 , it can be seen that the support plate 300 includes a support plate body 310 and a first connector 320. In one example, the support plate body 310 of the support plate 300 is formed by connecting an upper cover 311, a lower cover 312, and a bottom plate 313. The upper cover 311 and the lower cover 312 form the portion of the support plate 300 exposed from the seat 400, while the bottom plate 313 is connected to the rear ends of the upper and lower covers 311, 312, and is located therebetween. In one example, the bottom plate 313 has an extension portion 313a extending rearward a certain length from the housing formed by the upper cover 311 and the lower cover 312, thereby enhancing the stability of the support plate 300 when sliding relative to the seat 400. In one example, two first connectors 320 may be provided, wherein the two first connectors 320 may be symmetrically arranged on the left and right sides of the support plate body 310, with the extension portion 313a located between the two first connectors 320. Preferably, the extension portion 313a may be a sheet-like structure. At least a portion of the first connector 320 is fixed to the support plate body 310, and another portion extends from the support plate body 310 to be slidably inserted into a corresponding connecting hole 401 having a complementary shape provided on the seat 400, thereby enabling the support plate 300 to be slidably connected to the seat 400. In one example, as shown in FIG. 15 , the length of the extension portion 313a can be less than the length of the first connector 320 extending from the support plate body 310 (e.g., from the housing formed by the upper cover 311 and the lower cover 312). More specifically, at least a portion of the first connector 320 is fixedly connected to the bottom plate 313 of the support plate 300 via rivets. Due to the cover of the support plate 300, the specific connection between the first connector 320 and the support plate body 310 is not shown in Figures 14 to 16 . For further details, please refer to Figure 18 .

In addition, the first connecting member 320 of this embodiment can be in the shape of a round tube, a square tube, a round rod, a square rod, etc. This disclosure is not limited to the above embodiments, and can also be provided with one, three, or more than three connecting members.

In one example, as shown in Figures 15 and 16 , the support plate 300 further includes a second connecting member 330 that slidably engages with a corresponding sliding member 402 disposed on the seat 400, thereby further strengthening the sliding connection between the support plate 300 and the seat 400. In a preferred example, the second connecting member 330 can be disposed on the upper surface of the support plate 300, or more specifically, on the support plate body 310 of the support plate 300. More preferably, as shown in Figure 16 , one of the second connecting member 330 and the sliding member 402 is a sliding rib, and the other is a sliding groove, such as a T-shaped sliding rib and a T-shaped sliding groove, an L-shaped sliding rib and an L-shaped sliding groove, etc. Furthermore, the second connecting member 330 and the sliding member 402 may also employ other sliding coupling structures, such as a sliding rod and a sliding ring, as long as the support plate 300 can slide relative to the seat 400. Furthermore, while only two second connecting members 330 are shown in FIG15 of this embodiment, those skilled in the art will appreciate that other numbers, such as one, three, or four, are also possible. It is important to note that the second connecting member 330 can be designed so that it does not protrude from the seat 400 during the sliding movement of the support plate 300 relative to the seat 400, thereby preventing interference with or snagging on a child's clothing.

Referring to Figures 17 to 20, Figure 17 shows a perspective view of a child safety seat according to another embodiment of the present disclosure, wherein the bottom cover between the support plate 300 and the seat 400 is removed; Figures 18 and 19 respectively show partial perspective views of the child safety seat as viewed from above, wherein the upper cover 311 of the support plate 300 is removed to illustrate the internal structure of the support plate 300. More specifically, Figure 18 shows the release operating member 421 of the seat angle adjustment mechanism in the locked position, while Figure 19 shows the release operating member 421 of the seat angle adjustment mechanism in the unlocked position; and Figure 20 shows the base 500 provided with an engaging hole 510 that engages with the seat angle adjustment mechanism.

To enhance the comfort of the child safety seat, a seat angle adjustment mechanism can be provided. Specifically, this mechanism can adjust the angle of the seat 400 relative to the base 500. Specifically, the seat angle adjustment mechanism can be located between the seat 400 and the base 500 to adjust the angle of the seat 400 relative to the base 500, such as the angle α shown in Figure 11.

As shown in Figures 17 to 19, the seat angle adjustment mechanism includes a release operating member 421, a connecting member 422, and an angle locking structure 424. The release operating member 421 is provided on the support plate 300 connected to the front end of the seat 400 and can be operated to move between a release position (as shown in Figure 19) and a locking position (as shown in Figure 18). In one example, the release operating member 421 can be slidably provided on the support plate 300 and is at least partially exposed from the support plate 300 for external operation. More specifically, as shown in Figure 17, the release operating member 421 is provided on the lower side of the front end of the support plate 300 and is at least partially exposed from the lower side of the support plate 300. For example, the lower cover 312 of the support plate 300 may be provided with a window 312A at a position corresponding to the release operating member 421. The user can operate the release operating member 421 through the window 312A to prevent the release operating member 421 from protruding from the bottom side of the support plate 300 and causing interference or erroneous operation. Furthermore, the release operating member 421 of the present disclosure is not limited to the aforementioned location; it may be positioned elsewhere on the support plate 300, such as on any side or top surface of the support plate 300. Furthermore, although FIG. 17 of the present disclosure illustrates only one release operating member 421, it should be understood that multiple release operating members 421 may be provided, such as one on each side of the support plate 300. The angle locking structure 424 may be adjusted by operating any one of the release operating members 421, or multiple angle locking structures 424 may be adjusted simultaneously.

The connecting member 422 is connected between the release operating member 421 and the angle locking structure 424. The angle locking structure 424 is disposed between the seat 400 and the base 500 to lock or unlock the position of the seat 400 relative to the base 500. Referring to Figures 17 and 18, one end of the connecting member 422 is fixedly connected to the release operating member 421, and the other end is fixedly connected to the angle locking structure 424. When the release operating member 421 is operated, the angle locking structure 424 can be released from the seat 400 and the base 500 under the pulling action of the connecting member 422. In one embodiment, the connecting member 422 is a flexible member, such as a steel wire, to avoid interfering with the expansion and contraction of the support plate 300. More specifically, referring to FIG17 , where the bottom cover of the seat 400 is removed, the other end of the connecting member 422 extends through the support plate 300 and connects to the angle locking structure 424.

In one example, the extension portion 313a (e.g., a sheet-like structure) of the base plate 313 of the support plate 300 is further provided with receiving grooves 3131 for securing the connecting members 422. The number of receiving grooves 3131 corresponds to the number of connecting members 422. For details, please refer to Figure 15. For example, referring to Figures 15 and 17, two receiving grooves 3131 may be symmetrically spaced apart on the extension portion 313a to accommodate corresponding connecting members 422. In addition to enhancing the sliding stability of the support plate 300, the extension portion 313a also shields the connecting members 422, preventing interference from external equipment and enhancing the appearance of the child safety seat. For example, the receiving groove 3131 may be a U-shaped structure with its opening facing the seat 400. However, the present disclosure is not limited thereto. The receiving groove 3131 may also have other shapes as long as it can accommodate the connecting member 422.

In one example, multiple connecting members 422 and multiple angle locking structures 424 can be provided. Here, two connecting members 422 and two angle locking structures 424 are provided as an example. As shown in Figure 17 , two angle locking structures 424 are disposed on the inner, facing sides of the seat 400 and located in front of the sliding assembly. One end of each connecting member 422 is connected to a symmetrical position on the release operating member 421, and the other end is connected to one of the angle locking structures 424. More specifically, the connecting member 422 extends from the release operating member 421, through the receiving slot 3131 of the support plate 300, and then extends from the support plate 300 to connect to one end of the angle locking structure 424, thereby synchronously controlling the two angle locking structures 424 via the release operating member 421.

In one example, as shown in Figures 18 and 19 , the seat angle adjustment mechanism further includes a reset member 423 . The reset member 423 is disposed between the release operating member 421 and the support plate 300 and constantly provides a force to maintain or restore the release operating member 421 to the locked position.

Furthermore, the angle locking structure 424 has multiple locking positions relative to the base 500, allowing the seat 400 to be locked at multiple angles relative to the base 500, thereby enabling the child safety seat to be adjusted in angle.

As shown in Figure 17 , the angle locking structure 424 includes a latch 4241 movably mounted on the base 400. Specifically, as shown in Figure 17 , one end of the latch 4241 is coupled to the release operating member 421 via a connecting member 422 and is capable of engaging with at least one engaging hole 510 provided on the base 500. Preferably, as shown in conjunction with Figures 17 and 20 , the base 500 is provided with multiple engaging holes 510, allowing the latch 4241 to engage with one of the engaging holes 510 provided on the base 500 as the angle of the base 400 relative to the base 500 changes. It should be noted that FIG20 only shows three engaging holes 510, but the present disclosure is not limited thereto. The base 500 may also be provided with another number of engaging holes, such as four, five, or six, to provide more precise angle adjustment.

Furthermore, the angle locking structure 424 further includes a locking and restoring member 4242 , which is disposed between the seat 400 and the latch 4241 and provides a constant force that causes the latch 4241 to engage with the corresponding engaging hole 510 .

It should be noted that while the seat angle adjustment structure in this embodiment can be installed in conjunction with the support plate 300, the present disclosure is not limited thereto. The seat angle adjustment structure can also be used in conjunction with the embodiments described above in conjunction with Figures 4 to 7B. That is, the release operating member 421 of the seat angle adjustment structure can also be installed on the support plate 100 in the aforementioned embodiment, for example, at its front end or any side. Furthermore, it should be understood that the seat angle adjustment structure can also be used in conjunction with a non-adjustable support plate. That is, the release operating member 421 of the seat angle adjustment structure can be installed on a seat with a non-adjustable support plate. This arrangement also facilitates the user's adjustment of the seat angle by preventing the release operating member 421 from being blocked by the support plate 300 when the user needs to operate the release operating member 421.

The following will use the angle locking structure 424 shown in Figures 17 to 19 as an example to explain the principle of the seat angle adjustment mechanism in detail.

Before adjusting the seat angle, as shown in Figures 17 and 18 , the release operating member 421 is in the locked position, the seat 400 is positioned relative to the base 500, and the latch 4241 of the angle locking structure 424 remains engaged with the engagement hole 510 on the base 500 due to the elastic action of the engagement return member 4242.

To adjust the seat angle, the user can operate the release operating member 421 in a direction that resists the return member 423 to the unlocked position (as shown in Figure 19). For example, by pressing the release operating member 421 from the window 312A (see Figure 17) on the support plate 300, the user pulls the connecting member 422. The connecting member 422 then pulls the latch 4241, overcoming the elastic force of the return member 4242 and disengaging the latch hole 510. At this point, the seat 400 is unlocked from the base 500, allowing it to slide relative to the base 500 to adjust to the desired angle.

When the seat is adjusted to the desired angle, the user releases the release member 421. The release member 421 is elastically activated by the reset member 423, returning to the locked position shown in Figure 18. The latch 4241 is elastically activated by the locking reset member 4242, returning to the engaged position shown in Figure 17. Preferably, the elastic force of the locking reset member 4242 is greater than that of the reset member 423, ensuring that the connecting member 422 remains tensioned.

Referring to Figures 21 to 24 , Figure 21 shows another partial perspective view of a child safety seat according to another embodiment of the present disclosure, wherein the upper cover 311 of the support plate 300 is removed to illustrate the internal structure of the support plate 300; Figure 22 shows a top partial perspective view of the support plate 300 and the seat 400; Figure 23 shows a cross-sectional view taken along line "D-D" in Figure 22; and Figure 24 shows a perspective view of the support plate 300 with the upper cover 311 and bottom plate 313 removed.

In this embodiment, to further enhance the comfort of the child safety seat, better adapt it to different vehicles, and provide calf supports of varying lengths for children, a support plate adjustment mechanism 340 is provided on the support plate 300 to adjust the extended position of the support plate 300 relative to the seat 400, that is, to adjust the length of the support plate 300 extending from the seat 400.

In one example, the support plate adjustment mechanism 340 includes an operating member 341 (also referred to as the "operating mechanism") and a positioning structure 343. For ease of understanding, FIG21 primarily illustrates the structure of the operating member 341 and does not illustrate the positioning structure 343. FIG22 illustrates the positioning method between the support plate 300 and the seat 400, while FIG23 and FIG24 illustrate the connection and coordination between the positioning structure 343 and the operating member 341.

As shown in FIG21 , the operating member 341 is slidably disposed on the support plate 300 and is capable of sliding between a locked position (see FIG21 ) and a released position (not shown). In conjunction with FIG14 shown above, the operating member 341 is at least partially exposed from the support plate 300. For example, the operating member 341 can be configured as a member spanning the interior of the support plate 300, with its left and right ends exposed to the sides of the support plate 300, thereby forming an adjustment end on each side of the support plate 300. Thus, the user can operate the operating member 341 through the adjustment end on either side of the support plate 300. Similarly, a window can be provided on each side of the support plate 300 to prevent the two adjustment ends from protruding from the outer surface of the support plate 300 and causing unnecessary interference. It should be noted that the operating structure of this disclosure is not limited to the above-described structure. It can also be configured as two separate components disposed on either side of the support plate 300, with the two components moving synchronously via a connecting structure. However, this disclosure is not limited to this.

In one example, the support plate adjustment mechanism 340 further includes an elastic member 342. This elastic member 342 is positioned between the operating member 341 and the support plate 300 and provides a constant force to maintain or restore the operating member 341 to the locked position. More specifically, one end of the elastic member 342 abuts the operating member 341, while the other end abuts the inner side of the lower cover 312 of the support plate 300. For example, as shown in Figure 21 , two elastic members 342 may be symmetrically disposed on the support plate 300. More preferably, the two elastic members 342 are disposed at the left and right ends of an operating member 341 that spans the support plate 300, thereby enabling the operating member 341 to slide stably relative to the support plate 300 until it returns to a locked position.

Further referring to Figures 22 to 24 , a positioning structure 343 is provided on the support plate 300 and is coupled to the operating member 341 to position the support plate 300 at at least one position on the seat 400. When the operating member 341 is in the locked position, the positioning structure 343 is locked, positioning the support plate 300 relative to the seat 400. When the operating member 341 is operated to the released position (not shown), the positioning structure 343 is unlocked, allowing the support plate 300 to move relative to the seat 400. In this embodiment, the positioning structure 343 includes a first positioning structure and a second positioning structure, respectively provided on either side of the support plate 300 (its support plate body) to couple with the operating member 341.

In one example, as shown in Figures 22 and 23, the positioning structure 343 includes a first locking member 3431, which is arranged at the end of the support plate 300 adjacent to the seat 400. As the operating member 341 moves between the locked position and the released position, the first locking member 3431 can be engaged with the second locking member 430 correspondingly arranged on the seat 400 (i.e., the first locking member 3431 is in the locked position) or disengaged from the second locking member 430 (i.e., the first locking member 3431 is in the unlocked position). In this embodiment, the first locking member 3431 can be a positioning pin and the second locking member 430 can be a positioning slot. More specifically, two positioning slots are shown in FIG22 . However, the present disclosure is not limited to this. More positioning slots can be provided to provide more detailed position adjustment.

More specifically, as shown in Figures 23 and 24 , a first locking member 3431 is fixedly mounted on a fixing seat 3432 at the end of the support plate 300. The operating member 341 is provided with an inclined slot 3411 that slidably engages with the fixing seat 3432. For example, the inclined slot 3411 is located at one end of the operating member 341, such as the end opposite the operated end (i.e., the end exposed from the support plate 300) as shown in Figure 23 , and is slidably connected to the fixing seat 3432 via linkage pins 3434 disposed on either side of the fixing seat 3432. The inclined slot 3411 may be tilted downward toward the direction in which the support plate 300 retracts (as shown in Figure 24 ), but the present disclosure is not limited thereto. In one example, the linkage pin 3434 is integrally formed with the fixing base 3432 and protrudes from both sides of the fixing base 3432, but the present disclosure is not limited to this. For example, in other embodiments, the linkage pin 3434 may be a single pin inserted into the fixing base 3432 and protruding from both sides of the fixing base 3432.

As shown in Figure 24 , when the operating member 341 is operated and moves from the locked position to the released position (not shown), the operating member 341 causes the inclined slot 3411 at one end of the operating member 341 to move forward. As the connecting pin 3434 moves within the inclined slot 3411, the fixed seat 3432 moves downward, thereby disengaging the first locking member 3431 from the seat 400. At this point, the support plate 300 can slide relative to the seat 400.

In one example, a return spring 3433 may be disposed between the fixing base 3432 and the support plate 300 (e.g., the lower cover 312 of the support plate 300) to assist the first locking member 3431 in maintaining or returning to a position engaged with the seat 400.

By adjusting the length of the support plate 300 relative to the seat 400, the support plate 300 can be aligned with different vehicle backrests, ensuring a more secure connection to the child safety seat. Furthermore, by adjusting the length of the support plate 300 relative to the seat 400, varying legroom can be provided for children sitting on the seat 400, accommodating children of varying heights.

The present invention provides a beneficial effect by providing a seat angle adjustment mechanism on a child safety seat, enabling adjustment of the seat angle—that is, the angle of the seat relative to the base—to enhance the comfort of the child safety seat. Furthermore, the release mechanism of the seat angle adjustment mechanism is located on the support plate, making the seat angle adjustment mechanism easy to operate and unaffected by the extension and contraction of the support plate. This improves the convenience of seat angle adjustment and, in turn, enhances user satisfaction. Furthermore, this seat angle adjustment mechanism is simple in structure, easy to manufacture, and low in cost. This solves a problem with existing seat angle adjustment mechanisms: the operating buttons are often located at the front of the seat. When the support plate extends from the front of the seat, it blocks the seat angle adjustment buttons, making them difficult to find or preventing the user from reaching them, causing inconvenience.

Referring to FIG. 25 , another side cross-sectional view of a child safety seat according to another embodiment of the present disclosure is shown. In order to prevent the support plate 100 from being separated from the seat 200, a limiting mechanism may be provided on the support plate 300. For example, the limiting mechanism may be composed of two limiting pieces. Specifically, as shown in FIG. 25 , a first limiting piece 350 may be provided on the support plate 300, and a corresponding second limiting piece 440 may be provided on the seat 400. Specifically, the first limiting piece 350 may be provided on the bottom plate 313. For example, the first limiting piece 350 is fixed to one end of the support plate 300 (for example, the end opposite to the end extending out from the seat 400) and extends a distance from the end in a direction, for example, perpendicular to the support plate 300. The first limiting piece 350 cooperates with the second limiting piece 440 to limit the travel of the support plate 300 relative to the seat 400. This travel is less than or equal to the distance one end of the support plate 300 extends.

Specifically, as shown in Figure 25 , when the support plate 300 is pulled forward from beneath the seat 400, the first stopper 350 moves forward along with the support plate 300 until it abuts against the second stopper 440, restricting further movement of the support plate 300 and preventing it from separating from the seat 400.

In addition, another embodiment of the present disclosure provides a child safety seat and a support plate 600 for the child safety seat. Figures 26 and 27 illustrate the child safety seat with the support plate 600 in different positions. The child safety seat of this embodiment may include a seat 700 for a child to sit on and a support plate 600 slidably connected to the seat 700. Figure 28 illustrates a perspective view of the child safety seat of this embodiment viewed from another angle. Figure 29 illustrates a perspective view of the support plate 600. It should be noted that the terms "front" and "rear" and other positions or directions described below are defined based on the position of the support plate 600 relative to the seat 700. Specifically, "front" refers to the direction in which the support plate 600 extends from the seat 700, meaning the "front end" of the support plate 600 is the end farther from the seat 700 when extended. "Rear" refers to the direction in which the support plate 600 retracts toward the seat 700, meaning the "rear end" of the support plate 600 is the end closer to the seat 700 when extended.

As shown in Figures 26 to 28 , the support plate 600 can slide relative to the seat 700 and extend and retract from the front end of the seat 700. The support plate 600 includes a support plate body 610 and a first connector 620. The support plate body 610 may include an upper cover 611 and a lower cover 612, and optionally a bottom plate 613. The upper cover 611 and the lower cover 612 form the portion of the support plate 600 exposed from the seat 700. Specifically, the support plate 600 may have other specific structures similar to those of the support plate 300 in the aforementioned embodiment, and will not be further described in this embodiment. Furthermore, the support plate 600 of this embodiment can also be connected to the seat 700 through similar connection methods and structures as those in the aforementioned embodiments, such as the sliding assembly comprising the sliding members 410A, 410B and the sliding mating members 520A, 520B, and/or the second connecting member 330 and the sliding member 402 in the aforementioned embodiments, which will not be described in detail here.

In this embodiment, the support plate 600 can slide between a retracted position (see FIG. 26 , i.e., the position in which the support plate 600 is fully retracted into the seat 700) and a fully extended position (see FIG. 27 ). In addition to the fully extended position shown in FIG. 27 (i.e., the position in which the support plate 600 extends outward from the seat 700 to its maximum extent), the support plate 600 can have multiple other extended positions, all of which are located between the retracted position and the fully extended position. To allow the support plate 600 to be adjusted to different positions relative to the seat 700, the support plate 600 can be provided with a support plate adjustment mechanism 640 for adjusting the extended position of the support plate 600 relative to the seat 700, i.e., adjusting the length of the support plate 600 extending from the seat 700.

FIG30 shows another perspective view of the support plate 600 shown in FIG29 , and FIG31 shows a partial top perspective view of the child safety seat of this embodiment. In both FIG30 and FIG31 , the upper cover 611 of the support plate 600 is removed to facilitate illustrating the internal structure of the support plate 600 and the structure of the support plate adjustment mechanism 640.

Unlike the previous embodiment, the support plate adjustment mechanism 640 of this embodiment includes two operating members 641, corresponding pull members 644 and drive members 645 for each operating member 641, and a positioning structure 643 (i.e., a first positioning structure and a second positioning structure disposed on either side of the support plate body 610 of the support plate 600). The operating members 641 and their corresponding pull members 644 and drive members 645 are collectively referred to as the "operating mechanism." The operating mechanism is at least partially movably disposed on the support plate 600, and the positioning structure 643 is coupled to the operating mechanism to position the support plate 600 at at least one position on the seat 700. Specifically, as shown in Figures 28, 30, and 31, an operating member 641 is slidably disposed on the support plate 600 and is capable of sliding between a locked position and a released position. In one example, the operating member 641 can be at least partially exposed from the support plate 600. Two operating members 641 are disposed on either side of the support plate 600, specifically within the support plate body 610 of the support plate 600. At least a portion of each operating member 641 is exposed from the lower cover 612 of the support plate 600, allowing a user to access and operate the operating member 641 from the outside of the support plate 600. Alternatively, as shown in FIG28 , a recessed portion may be provided on each side of the lower cover 612 of the support plate 600, with windows for exposing the operating member 641 disposed in the recessed portion. This prevents the operating member 641 protruding from the support plate 600 from interfering with other components or the operator.

In one example, as shown in Figure 30 , the support plate adjustment mechanism 640 may further include an elastic member 642 disposed between the corresponding operating member 641 and the support plate 600 to provide a constant force to maintain or restore the corresponding operating member 641 to the locked position. Specifically, one end of the elastic member 642 abuts the operating member 641, while the other end abuts the support plate 600, for example, the inner side of the support plate body 610.

As shown in Figures 30 and 31 , the driving member 645 is slidably mounted on the support plate 600 and is movable in response to the operation of the corresponding operating member 641. In one example, the driving member 645 is located at the rear end of the support plate 600, i.e., the end opposite the end (i.e., the front end) extending from the seat 700. The traction member 644 includes a first traction member 6441 and a second traction member 6442. The first traction member 6441 is configured to connect between the operating member 641 and the driving member 645, both located on the same side of the support plate 600, to facilitate interlocking operation of the driving member 645 and the operating member 641. The second pull member 6442 is configured to connect between two operating mechanisms, for example, between the operating member 641 on one side and the driving member 645 on the other side, to coordinate the two operating mechanisms. In one example, at least one of the first pull member 6441 and the second pull member 6442 can be a flexible element, such as a steel wire.

In one example, the first guide member 6441 may include a first guide wire 6441a having a first end, a wire portion, and a second end. Specifically, the first and second ends of the first guide wire 6441a may be fixedly connected to the operating member 641 and the driving member 645, respectively, such that when the operating member 641 is operated, the driving member 645 is driven to move via the first guide wire 6441a.

Optionally, the first lead member 6441 may further include a first sheath 6441b, which is disposed over (i.e., wraps) the first lead wire 6441a to protect it from wear and tear and increase its service life. Specifically, the two ends of the first sheath 6441b are fixed to the support plate 600.

In another example, the first lead member 6441 may include a first lead wire 6441a and a first sheath 6441b. The first lead wire 6441a has a first end, a wire portion, and a second end. The first end of the first lead wire 6441a is fixedly connected to the driver 645, and the second end is fixedly connected to the support plate 600 (e.g., the lower cover 612 of the support plate body 610). Optionally, the wire portion is movably disposed on the operating member 641, for example, slidably passed through the operating member 641. The first sheath 6441b is sleeved over the first lead wire 6441a, wherein the first end of the first sheath 6441b abuts the support plate 600 (e.g., the lower cover 612 of the support plate body 610), and the second end is connected to the operating member 641. When the operating member 641 is operated, it pushes the first sheath 6441b. Because the first sheath 6441b abuts the support plate 600 and cannot move, it reacts on the first guide wire 6441a, which is sheathed within it, causing the first guide wire 6441a to drive the driving member 645 to move.

As shown in Figure 30, the second guide member 6442 may include a second guide wire 6442a having a first end, a body portion, and a second end. Specifically, the first end of the second guide wire 6442a is connected to the operating member 641 on one side of the support plate 600, and the second end is connected to the driving member 645 on the other side of the support plate 600. In one example, the second guide member 6442 may also include a second sheath 6442b that fits over the second guide wire 6442a to protect it from wear and tear and increase its service life. The two ends of the second sheath 6442b are fixed to the support plate 600. Specifically, the first end of the second sheath 6442b is fixed to one side of the support plate 600 near the driving member 645, while the second end is fixed to the other side of the support plate 600 near the operating member 641. When the operating member 641 on one side of the support plate 600 is operated, the driving member 645 on that side moves, and simultaneously the driving member 645 on the other side moves via the second guide member 6442.

As shown in Figures 29 to 31 , the positioning structure 643 is disposed on the support plate 600 and is linked to the drive member 645 (i.e., the drive member 645 and the operating member 641 connected to the drive member 645 via the first pull member 6441) to position the support plate 600 at at least one position on the seat 700. When the operating member 641 is in the locked position, the positioning structure 643 is in the locked position, positioning the support plate 600 relative to the seat 700. When the operating member 641 is moved to the released position, it drives the drive member 645 to move, thereby releasing the positioning structure 643 and allowing the support plate 600 to move relative to the seat 700.

In one example, the support plate adjustment mechanism 640 may further include a driver return spring 6451 disposed between the driver 645 and the support plate 600, for example, with its two ends respectively contacting the driver 645 and the lower housing 612 of the support plate 600 to provide an elastic force to the driver 645, thereby causing the associated positioning structure 643 to be in or restored to a locked position, and/or causing the associated operating member 641 to be in or restored to a locked position.

In one example, as shown in Figures 29 and 30 , the positioning structure 643 may include a first locking member 6431 disposed at the end of the support plate 600 adjacent to the seat 700. As the operating member 641 moves between a locked position and a released position, the first locking member 6431 can engage with a corresponding second locking member 730 (see Figure 31 for combination) disposed on the seat 700 to lock the first locking member 6431 in the locked position, or disengage from the second locking member 730 to unlock the first locking member 6431. In this embodiment, as can be seen from Figures 29 to 31 , the first locking member 6431 can be configured as a positioning pin, and the second locking member 730 can be correspondingly configured as a positioning slot. However, the present disclosure is not limited to this. The first locking member 6431 and the second locking member 730 can also be configured as other structures, such as a hook and loop structure, a recess and protrusion structure, etc. The child safety seat of the present disclosure can be provided with one or more sets of second locking members 730. Specifically, one or more positioning slots can be provided on each side of the seat 700 to engage with corresponding positioning pins, thereby positioning the support plate 600 at one or more positions relative to the seat 700. Optionally, in this embodiment, multiple positioning slots can be provided on each side of the seat 700 to provide more precise positioning adjustment.

As shown in FIG30 , a fixed seat 6432 is provided at the end of the support plate 600 adjacent to the seat portion 700 (i.e., the rear end of the support plate 600), and is adapted to engage with the drive member 645. Specifically, a first locking member 6431 is fixedly provided on the fixed seat 6432, and a corresponding inclined groove 6452 is provided on the drive member 645, which slidably engages with the fixed seat 6432. In one example, the inclined groove 6452 is located at one end (e.g., the rear end) of the drive member 645 and is slidably connected to the fixed seat 6432 via linkage pins 6434 provided on both sides of the fixed seat 6432. The inclined groove 6452 may be inclined downward toward the rear end of the support plate 600, but the present disclosure is not limited thereto. Specifically, the linkage pin 6434 can be integrally formed with the fixing base 6432 and protruded from both sides of the fixing base 6432, but the present disclosure is not limited to this. For example, in other embodiments, the linkage pin 6434 can also be a pin inserted into the fixing base 6432 and protruding from both sides of the fixing base 6432.

In one example, a reset member (not shown), such as a reset spring, may be disposed between the fixing seat 6432 and the support plate 600 (e.g., the lower cover 612 of the support plate 600) to assist the first locking member 6431 in maintaining or returning to its engaged position with the seat 700. For example, the reset member may be disposed below the fixing seat 6432 to provide a force to move the fixing seat 6432 and the first locking member 6431 disposed thereon upward.

When the operating member 641 is operated to move from the locked position to the released position, the operating member 641 drives the driving member 645, causing the inclined slot 6452 at one end of the driving member 645 to move. As the connecting pin 6434 moves in the inclined slot 6452, the fixed seat 6432 moves downward, thereby driving the first locking member 6431 to disengage from the seat 700. At this time, the support plate 600 can slide relative to the seat 700. When the operating member 641 is released, the fixed seat 6432 and the first locking member 6431 move upward under the action of the return spring and/or the driver return spring, locking with the second locking member 730 provided on the seat 700, thereby locking the support plate 600 relative to the seat 700. Simultaneously, the linkage pin 6434 moves within the inclined slot 6452, driving the driver 645 to move, thereby moving the operating member 641 from the released position to the locked position.

By installing the support plate adjustment mechanism 640 of this embodiment, when the support plate 600 needs to be adjusted, the operator can pull the operating member 641 on either side (for example, in direction F as shown in Figure 31). The operating member 641 drives the driving member 645 via the first pull member 6441, thereby releasing the positioning structure 643 (specifically, the first locking member 6431) on the same side as the operating member 641. Simultaneously, the operating member 641 on that side drives the driving member 645 on the other side via the second pull member 6442, thereby releasing the positioning structure 643 on the other side.

In other embodiments, an operating member 641 may be provided, and the operating member 641 may be connected to the first and second positioning structures provided on either side of the support plate 600 (specifically, the support plate body 610) via first and second pulling members, respectively. Operation of the operating member 641 can cause the first and second positioning structures to be released. Specifically, one end of the first pulling member is connected to the operating member 641, and the other end is connected to the first positioning structure; one end of the second pulling member is connected to the operating member 641, and the other end is connected to the second positioning structure. When the operating member 641 moves (e.g., slides) from the locked position to the released position, the first pulling member pulls the first positioning structure to release, and the second pulling member pulls the second positioning structure to release.

By adjusting the length of the support plate 600 relative to the seat 700, the support plate 600 can be aligned with different vehicle backrests, ensuring a more secure connection to the child safety seat. Furthermore, by adjusting the length of the support plate 600 relative to the seat 700, varying legroom can be provided for children sitting on the seat 700, accommodating children of varying heights.

Generally speaking, a child car seat (also known as a "child-mounted seat" or "child carrier") consists of a base and a carrier body that is detachably mounted to the base. The base connects to the car seat's connector via ISOFIX fastenings located at its rear end. The carrier body features a height-adjustable headrest that adjusts to the child's height, ensuring safety and comfort.

The main body of a child's baby carrier typically features height-adjustable headrests. Correspondingly, the headrest is equipped with a locking element that engages with the height-adjusting element. The headrest can be adjusted up and down relative to the main body of the carrier to achieve height adjustment. The locking element and the height-adjusting element work together to lock the headrest at the desired height. However, during emergency braking at high speeds, the headrest can easily release accidentally due to inertia, rendering it ineffective in protecting the infant's head and potentially causing injury.

With reference to Figures 32 and 33 , one embodiment of the present invention provides a child carrier M100 comprising a carrier body M20, a headrest M30, and a headrest height adjustment mechanism M10. The headrest M30 is movably mounted on the carrier body M20, and the headrest height adjustment mechanism M10 is located between the headrest M30 and the carrier body M20.

The carrier body M20 includes a backrest M202. The carrier body M20 also has height adjustment stages M201 for adjusting the headrest M30 vertically. In this embodiment, the height adjustment stages M201 are multiple positioning slots formed in the backrest M202, spaced apart vertically along the carrier body M20. The headrest height adjustment mechanism M10 cooperates with the height adjustment stages M201 to adjust the height of the headrest M30 relative to the backrest M202. In this embodiment, the backrest M202 is fixed; however, in other embodiments, the backrest M202 may be movable vertically along the carrier body M20.

Referring to Figures 34 and 35 , the headrest height adjustment mechanism M10 includes an operating member M12, a locking assembly M14, a safety lock mechanism M16, and a drive member M18. The operating member M12 is slidably disposed on the headrest M30 and has an initial position, a first operating position, and a second operating position relative to the headrest M30. The locking assembly M14 is selectively lockable with the height adjustment gear M201. The locking assembly M14 has a locking position that engages with the height adjustment gear M201 and a release position that separates from the height adjustment gear M201, and can be switched between the locking position and the release position. The safety lock mechanism M16 locks the lock assembly M14 in the locked position and releases it when the operating member M12 switches from its initial position to its first operating position. One end of the actuator M18 is slidably connected to the operating member M12, while the other end of the actuator M18 abuts the lock assembly M14. When the operating member M12 switches from its first operating position to its second operating position, it drives the actuator M18, thereby shifting the lock assembly M14 from its locked position to its unlocked position.

Specifically, as shown in Figure 34, the headrest M30 includes a limit plate M32, a positioning plate M34, and two fixed cover plates M36. The limit plate M32 defines a limit slot M322 (see Figure 35). The operating member M12 extends through the limit slot M322 and can move vertically within the limit slot M322. The positioning plate M34 is connected to the bottom of the limit plate M32. Each fixed cover plate M36 is secured to the positioning plate M34 with multiple screws.

As shown in Figures 35 and 37, the operating member M12 is generally sheet-shaped and includes a handle M122 and a transmission member M124 connected to the handle M122. The handle M122 allows the user to easily pull the operating member M12. The transmission member M124 is used to transmit the movement of the operating member M12 to the drive member M18. The safety lock mechanism M16 includes a limit member provided on the operating member M12. Specifically, in this embodiment, the limit member is a stop pin M162 that is integrally formed with and connected to the transmission member M124. The two stop pins M162 are respectively located on both sides of the transmission member M124, and the extension direction of the stop pin M162 is the same as the movement direction of the transmission member M124. The transmission member M124 is also provided with a receiving slot M1242, a hanging hole M1244, and a sliding slot M1246. The hanging hole M1244 and the sliding slot M1246 are located at opposite ends of the receiving slot M1242 and are adjacent to the receiving slot M1242. It is understood that the number of stop pins M162 can be one or more.

As shown in Figures 35 and 36, the locking assembly M14 includes a locking body M142 and a locking rod M144. The top of the locking body M142 has a pivoting portion M146 that pivots with the fixed cover M36, so that the locking body M142 can rotate relative to the headrest M30. The bottom of the locking body M142 has a mating inclined surface M147 that abuts the drive member M18. The two sides of the locking body M142 also extend to form two fixing portions M148 fixed to the locking rod M144. The locking rod M144 is inserted into the two fixing portions M148 and can rotate with the locking body M142, thereby switching between a locked position and a released position. In the locked position, the locking lever M144 is locked to the height adjustment lever M201 of the vehicle body M20, thereby fixing the position of the headrest M30. In the unlocked position, the locking lever M144 is separated from the height adjustment lever M201 of the vehicle body M20, allowing the user to easily adjust the height of the headrest M30.

As shown in Figure 36 , the safety lock mechanism M16 also includes a latching element on the lock body M142. Specifically, in this embodiment, the latching element comprises two latching grooves M164 located on either side of the mating bevel M147 on the lock body M142. As shown in Figure 38 , when the stop pin M162 is inserted into the latching groove M164, it prevents the lock body M142 from rotating relative to the fixed cover M36, thereby locking the locking rod M144 of the lock assembly M14 in the locked position. As shown in Figure 39, when the stop pin M162 disengages the engaging slot M164, the locking body M142 can rotate relative to the fixed cover M36, thereby releasing the safety lock mechanism M16 from locking the locking assembly M14. It is understood that the number of engaging slots M164 can be one or more. Furthermore, it is understood that the positions of the stop pin M162 and the engaging slot M164 can be interchanged. In other words, the stopper of the safety lock mechanism M16 can also serve as the engaging slot. Accordingly, the engaging member of the safety lock mechanism M16 serves as the stop pin. The lock assembly M14 only needs to be locked in the locked position so that the stopper and the engaging member cooperate. In this embodiment, the locking assembly M14 is locked or unlocked in the locked position by moving the operating member M12 to insert the stop pin M162 into the engaging slot M164. This eliminates the need for additional mechanisms, resulting in a very streamlined structure that reduces overall size and production costs. Furthermore, the direction of movement of the operating member M12 corresponds to the direction of unlocking, making operation smooth and labor-saving.

To further secure the locking assembly M14 in the locked position, as shown in Figure 36 , the locking assembly M14 also includes a first elastic member M143. One end of the first elastic member M143 abuts against the locking body M142, while the other end abuts against the inner side of the fixed cover M36. This provides an elastic force that keeps the locking rod M144 locked to the height adjustment level M201, thereby maintaining the locking body M142 in the locked position.

Referring to Figure 40 , the driver M18 comprises a main body M182 and abutment portions M184 located on either side of the main body M182. The main body M182 is provided with a slot M181 for accommodating the driver M124. The main body M182 is also provided with a positioning hole M183 that communicates with the slot M181. The driver M18 also includes a puller M186 positioned within the positioning hole M183. In this embodiment, the puller M186 is a cylindrical positioning pin fixedly mounted within the positioning hole M183. Referring again to Figures 37 and 43 , the sliding slot M1246 on the driver M124 is a generally elongated slot that corresponds to the position of the positioning hole M183 and is larger in length than the diameter of the positioning hole M183. In other words, the pulling member M186 fixed in the positioning hole M183 can slide within the sliding groove M1246 along the extending direction of the sliding groove M1246. When the operating member M12 moves between the initial position shown in Figure 43 and the first operating position shown in Figure 44, the pulling member M186 slides within the sliding groove M1246, thereby causing the driving member M18 to not move with the movement of the operating member M12. However, when the operating member M12 switches from the first operating position (shown in Figure 44) to the second operating position (shown in Figure 45), the pulling member M186 abuts against the sidewall of the sliding groove M1246. Consequently, the pulling member M186, driven by the transmission member M124, moves, causing the driving member M18 to move along with the operating member M12. This, in turn, causes the driving member M18 to rotate the locking body M142 of the locking assembly M14 relative to the headrest M30, switching between the locked and unlocked positions.

As shown in Figures 40, 41A, 41B, and 43, the abutment portion M184 has a driving slope M188, and the bottom of the locking body M142 has a mating slope M147 that abuts the driving slope M188. The interaction between the driving slope M188 and the mating slope M147 converts the vertical linear motion of the driver M18 into rotational motion of the locking body M142.

Referring to Figures 41A and 41B , to automatically return the operating member M12 from the second operating position to its initial position, the headrest height adjustment mechanism M10 further includes a second elastic member M19 positioned between the headrest M30 and the operating member M12. In this embodiment, the second elastic member M19 is a tension spring. The main body of the second elastic member M19 is located within the receiving slot M1242 of the transmission member M124. One end of the second elastic member M19 is secured within a hanging hole M1244, and the other end is secured to a fixed hook M342 on the headrest M30. The second elastic member M19 provides an elastic force that automatically returns the operating member M12 from the second operating position to its initial position and maintains it there.

The following describes the working principle of the above-mentioned child carrier M100 in detail with reference to Figures 32 to 45.

When the operating member M12 is in the initial position shown in Figures 42 and 43, the locking rod M144 of the locking assembly M14 is locked to one of the height adjustment positions M201 under the action of the first elastic member M143. Furthermore, as shown in Figure 38, the stop pin M162 of the safety lock mechanism M16 is inserted into the engaging groove M164, thereby locking the locking assembly M14 in the locked position.

To adjust the height of the headrest M30 relative to the vehicle body M20, the operating member M12, which is in its initial position, can be pulled upward. The operating member M12 overcomes the elastic force of the second elastic member M19 and slides upward from its initial position to the first operating position (as shown in Figures 43 and 44). At this point, as shown in Figure 39, the stop pin M162 of the safety lock mechanism M16 disengages from the engaging groove M164, releasing the locking assembly M14 and allowing it to rotate freely between locked and unlocked positions. Furthermore, because the pulling member M186 slides within the sliding groove M1246, the driving member M18 does not move with the movement of the operating member M12.

Continuing to pull upward on the operating member M12 in the first operating position, the operating member M12 continues to slide from the first operating position to the second operating position, overcoming the elastic force of the second elastic member M19 (as shown in Figures 44 and 45). Because the pulling member M186 abuts against the sidewalls of the sliding groove M1246, the pulling member M186 is driven by the transmission member M124 to move, causing the driving member M18 to move along with the operating member M12. The interaction between the driving ramp M188 and the mating ramp M147 converts the vertical linear motion of the driving member M18 into rotational motion of the locking body M142. In other words, as the drive member M18 moves upward, the mating bevel M147 of the locking assembly M14, pushed by the driving bevel M188 of the drive member M18, overcomes the elastic force of the first elastic member M143 and rotates, thereby switching the locking assembly M14 from the locked position to the released position. At this point, the locking rod M144 of the locking assembly M14 is released from engagement with the height adjustment position M201, allowing the headrest M30 to be freely adjusted up and down relative to the vehicle body M20.

After the headrest M30 is adjusted to the target position, the operating member M12 is released. The second elastic member M19 retracts the operating member M12, returning it from the second operating position to its initial position. The locking assembly M14, under the action of the first elastic member M143, switches from the released position to the locked position. The locking rod M144 of the locking assembly M14 is re-engaged with one of the height adjustment positions M201, and the stop pin M162 of the safety lock mechanism M16 engages the engagement slot M164, locking the locking assembly M14 in the locked position.

It is understood that in another embodiment, if the driving ramp M188 is directly provided at the lower end of the operating member M12, the operating member M12 can also be used to directly drive the locking assembly M14 from the locked position to the unlocked position, and the driving member M18 can be omitted in this case.

The headrest height adjustment mechanism M10 includes a safety lock mechanism M16, and an operating member M12 having an initial position, a first operating position, and a second operating position. The operating member M12 switches from the initial position to the first operating position, causing the safety lock mechanism M16 to release the lock on the locking assembly M14. Consequently, the subsequent unlocking operation can only be performed when the operating member M12 moves to the first operating position. Simultaneously, one end of the driver M18 is slidably mounted on the operating member M12, while the other end of the driver M18 abuts the locking assembly M14. Switching the operating member M12 from the first operating position to the second operating position causes the driver M18 to move and drive the locking assembly M14 from the locked position to the released position, thereby achieving the purpose of unlocking. In other words, when the operating member M12 is in its initial position, the locking rod M144 of the locking assembly M14 is securely locked to the height adjustment position M201 under the combined force of the first elastic member M143 and the safety locking mechanism M16. Even if the child carrier M100 is impacted during emergency braking, the locking rod M144 will not easily disengage from the height adjustment position M201. This reduces the possibility of shifting and improves the safety of the child carrier M100.

Furthermore, child carriers are generally designed with multiple levels to accommodate children of different sizes. Furthermore, to accommodate children of varying sizes, the crotch strap length must be adjustable.

To securely secure children in child carriers, such as safety seats, child carriers typically feature a restraint system consisting of shoulder straps, a waist belt, a crotch strap, and buckles connecting them. To accommodate children of varying sizes, the crotch strap length is typically adjustable. However, the crotch strap length adjustment mechanisms in existing child carriers are complex and inconvenient to use.

Therefore, this disclosure proposes a crotch strap length adjustment device that can adjust the length of the crotch strap in different gears to suit children of different sizes, and the crotch strap gear adjustment is convenient and quick.

It should be noted that the child carrier referred to in this disclosure can be any device for carrying children, including but not limited to child safety seats, strollers, dining chairs, rocking chairs, etc. For ease of description, the following description uses a child safety seat as an example.

The present disclosure will be described in detail below with reference to the accompanying drawings.

Figures 46A to 53B illustrate a child carrier N1 that utilizes the crotch strap length adjustment device disclosed herein. The child carrier N1 includes a seat N10 and a backrest. It should be noted that the seat N10 in this disclosure refers to the seat housing.

The crotch strap length adjustment device disclosed herein includes a crotch strap provided with multiple crotch strap adjustment structures and an adjustment connector.

Hip strap

The crotch strap N100 has a first end N101 and a second end N102. Furthermore, at least one of the first end N101 and the second end N102 is a movable end that can be detachably connected to the seat N10 of the child carrier N1.

In the embodiment shown in Figures 46A and 46B , both the first end N101 and the second end N102 are movable ends. However, the present disclosure is not limited thereto. In one embodiment, one of the first end N101 and the second end N102 is a movable end that is adjustable in length or detachable from the base N10 but not adjustable in length, while the other is a fixed end secured to the base N10.

To adjust the length of the crotch strap N100, as shown in Figure 48, the movable end of the crotch strap N100 is provided with multiple crotch strap adjustment structures N101C and N102C arranged along the length of the crotch strap N100.

Specifically, in the embodiment shown in FIG48 , the first end N101 is provided with multiple (two shown in FIG48 ) first crotch strap adjustment structures N101C arranged along the length of the crotch strap N100, and the second end N102 is provided with multiple (two shown in FIG48 ) second crotch strap adjustment structures N102C arranged along the length of the crotch strap N100.

It should be understood that the number of crotch strap adjustment structures N101C and N102C on each movable end of the crotch strap N100 can be two or more. The greater the number of crotch strap adjustment structures N101C and N102C, the more levels of length adjustment the crotch strap N100 can have.

In addition, the first crotch strap adjustment structure N101C on the first end N101 and the second crotch strap adjustment structure N102C on the second end N102 may be the same or different in structure and quantity.

Because the multiple crotch strap adjustment structures N101C and N102C are arranged along the length of the crotch strap N100, when the different crotch strap adjustment structures N101C and N102C on the movable end of the crotch strap N100 are connected to the seat N10 of the child carrier N1, the crotch strap length will differ between the locations where the crotch strap N100 connects to the seat N10 (i.e., where the crotch strap adjustment structures N101C and N102C are located or where the fixed end is located), thereby enabling the crotch strap N100 to be adjusted in length.

When the first end N101 and the second end N102 of the crotch strap N100 are both movable, and the crotch strap adjustment structures N101C and N102C on the movable ends are not connected to the seat N10 of the child carrier N1, the crotch strap N100 can be detached from the seat N10.

In the embodiment shown in Figure 48 , the crotch strap adjustment structures N101C and N102C are formed by folding the ends of the crotch strap N100 multiple times relative to themselves to form adjustment sleeves. Furthermore, the folded portions of the ends of the crotch strap N100 can be maintained in a folded state by sewing, gluing, or other means, thereby maintaining the adjustment sleeves at a fixed size.

However, the present disclosure is not limited to this. The crotch strap adjustment structures N101C and N102C may also be adjustment rings, adjustment hooks, adjustment rods, or other structures, as long as they are arranged along the length of the crotch strap N100 and enable quick and convenient connection and detachment from the seat N10 of the child carrier N1. Furthermore, each movable end of the crotch strap N100 may be arranged along the length of the crotch strap N100 with one or more of an adjustment sleeve, adjustment ring, adjustment hook, and adjustment rod.

In addition, in order to facilitate the connection of the crotch strap N100 to the shoulder strap or waist belt, in the embodiment shown in Figures 46A to 47B, a buckle N20 may be provided on the crotch strap N100.

More specifically, as shown in Figures 46B and 47B, the buckle N20 may be provided with a buckle through-hole N21 through which the crotch strap N100 passes. This allows the buckle N20 to slide along the crotch strap N100, thereby adjusting the position of the buckle N20 on the crotch strap N100.

Adjusting the connectors

To quickly and easily connect or disconnect the crotch strap adjustment structures N101C and N102C on the active end from the seat N10 of the child carrier N1, an adjustment connector N400 is provided on the seat N10.

The adjustment connectors N400 correspond in number and position to the movable ends of the crotch strap N100. They are configured to engage with one of the crotch strap adjustment structures N101C or N102C on the corresponding movable end to prevent the corresponding movable end from leaving the seat N10, and to disengage from the crotch strap adjustment structures N101C or N102C to allow the corresponding movable end to leave the seat N10.

Specifically, as shown in Figures 46A to 47B , in an embodiment where both the first end N101 and the second end N102 of the crotch strap N100 are movable ends, two adjustment connectors N400 are arranged on the seat N10 along the width of the seat N10, corresponding to the two movable ends.

However, in an embodiment where only one of the first end N101 and the second end N102 of the crotch strap N100 is a movable end, the seat N10 may only be provided with one adjustment connector N400 corresponding to the movable end.

In an embodiment where both the first end N101 and the second end N102 of the crotch strap N100 are movable, but one end is not adjustable in length, the seat N10 is provided with two adjustment connectors N400 corresponding to the first and second ends N101 and N102. However, only one of the first and second ends N101 and N102 is provided with a crotch strap adjustment structure N101C or N102C. This allows the crotch strap N100 to be detachable when needed, but only one end is adjustable.

There are several ways to achieve the engagement and disengagement between the adjustment connector N400 and the crotch strap adjustment structures N101C and N102C.

In the embodiment shown in Figures 52A to 53B , the crotch strap adjustment structures N101C and N102C are adjustment sleeves. Accordingly, an adjustment connector N400 is provided on the seat portion N10, movable between a first position and a second position. Furthermore, the adjustment connector N400 is configured to engage with one of the adjustment sleeves of the crotch strap adjustment structures N101C and N102C in the first position (as shown in Figure 52B ), preventing the corresponding movable end from leaving the seat portion N10. In the second position, the adjustment connector N400 disengages from the adjustment sleeve (as shown in Figure 53B ), allowing the corresponding movable end to leave the seat portion N10.

Furthermore, to facilitate engagement and disengagement between the crotch strap adjustment structures N101C, N102C and the adjustment connector N400, as shown in Figures 52B and 53B, the adjustment connector N400 may include a connector engagement portion N410 that engages with or disengages from one of the crotch strap adjustment structures N101C, N102C.

The connector engagement portion N410 can be rod-shaped or protruding, with its cross-section corresponding in shape and size to the cross-section of the crotch strap adjustment structure N101C, N102C, such as an adjustment sleeve, adjustment ring, or adjustment hook. This allows the connector engagement portion N410 to be easily inserted into or removed from the crotch strap adjustment structure N101C, N102C, thereby enabling the adjustment connector N400 to be engaged or disengaged from the crotch strap adjustment structure N101C, N102C.

To ensure that the adjustment connector N400 does not affect the child's comfort on the upper surface of the seat N10, the adjustment connector N400 is positioned below the upper surface of the seat N10, as shown in Figures 46A to 47B. Furthermore, the upper surface of the seat N10 is provided with through-holes through which the crotch strap adjustment structures N101C and N102C pass and engage with the adjustment connector N400.

However, it should be understood that the adjustment connector N400 can be positioned above the upper surface of the seat N10. In this case, the upper surface of the seat N10 may not be provided with a through hole.

Furthermore, to ensure a stable connection between the adjustment connector N400 and the crotch strap adjustment structures N101C and N102C, a seat connection hole N113 is provided on the seat N10, as shown in Figure 52B. The connector joint N410 of the adjustment connector N400 is received in the seat connection hole N113 after being engaged with one of the crotch strap adjustment structures N101C and N102C. The seat connection hole N113 on the seat N10 positions the connector joint N410, preventing movement of the adjustment connector N400 when tension is applied to the connector joint N410 by the crotch strap N100 via the crotch strap adjustment structures N101C and N102C.

Of course, the present disclosure is not limited thereto. The engagement and disengagement between the adjustment connector N400 and the crotch strap adjustment structures N101C and N102C can be implemented using various other schemes.

For example, the crotch strap adjustment structures N101C and N102C can be multiple adjustment rings or adjustment hooks arranged along the length of the crotch strap N100. Correspondingly, the adjustment connector N400 can be a hook-shaped member arranged on the seat N10. By hooking or unhooking one of the adjustment rings or adjustment hooks of the crotch strap adjustment structures N101C and N102C onto or off the hook-shaped member of the adjustment connector N400, the user can quickly and conveniently connect or disconnect different crotch strap adjustment structures N101C and N102C from the seat N10 of the child carrier N1, thereby adjusting the position of the crotch strap N100 and thereby adjusting the length of the crotch strap N100.

In a first embodiment, the hook-shaped member serving as the adjustment connector N400 can be fixed relative to the seat N10. The user engages and disengages the crotch strap adjustment structures N101C, N102C from the adjustment connector N400 by moving the adjustment rings or adjustment hooks serving as the crotch strap adjustment structures N101C, N102C.

In a second embodiment, a hook-shaped member serving as the adjustment connector N400 can be provided on the seat N10 so as to be movable between a first position and a second position. Furthermore, the adjustment connector N400 can be configured to engage with one of the crotch strap adjustment structures N101C, N102C in the first position and disengage from the crotch strap adjustment structures N101C, N102C in the second position. In this second embodiment, since the adjustment connector N400 can translate and/or rotate relative to the seat N10 between the first and second positions, the user can more flexibly engage and disengage the crotch strap adjustment structures N101C, N102C and the adjustment connector N400 by moving them.

For another example, the crotch strap adjustment structures N101C and N102C can be multiple adjustment rods arranged along the length of the crotch strap N100. Correspondingly, the adjustment connector N400 can be a sleeve structure fixedly or movably arranged on the seat N10. The user inserts or removes one of the adjustment rods of the crotch strap adjustment structures N101C and N102C into or from the sleeve structure of the adjustment connector N400, thereby preventing or allowing the corresponding movable end of the crotch strap N100 to leave the seat N10, thereby adjusting the position of the crotch strap N100 and thereby adjusting the length of the crotch strap N100.

Adjustment operating parts

The crotch strap length adjustment device according to the present disclosure may further include an adjustment operating member N300. This adjustment operating member N300 is disposed so as to be exposed from the seat N10 and can be applied with force to drive the adjustment connector N400 between a first position and a second position. This allows the user to conveniently operate the adjustment connector N400 from outside the seat N10 via the adjustment operating member N300.

It should be understood that the adjustment operating member N300 is not a required component of the crotch strap length adjustment device according to the present disclosure. If the user can easily access the adjustment connector N400 from outside the seat N10, the adjustment operating member N300 may not be required. For example, in embodiments where the crotch strap adjustment structures N101C and N102C are multiple adjustment rings or adjustment hooks, and the adjustment connector N400 is a hook-shaped member disposed on the seat N10, the adjustment operating member N300 may not be required.

When the adjustment connector N400 is placed inside the seat N10 for aesthetic and comfort reasons, it is not easily accessible to the user from outside the seat N10. In this case, the crotch strap length adjustment device according to the present disclosure may include an adjustment operating member N300, allowing the user to operate the adjustment connector N400 via the adjustment operating member N300.

To facilitate user application of force to the adjustment member N300, in the embodiments shown in Figures 47B and 54 , the adjustment member N300 may be provided with a force-bearing portion N360. This force-bearing portion N360 may be a stepped structure or protruding structure of the adjustment member N300 that is exposed from the seat N10.

In one embodiment, the adjustment operating member N300 can be integrated with the adjustment connector N400. In other words, the adjustment operating member N300 can be formed as a portion (e.g., an operating handle) extending beyond the seat N10 of the adjustment connector N400, facilitating user operation of the adjustment connector N400.

In the embodiment shown in Figures 47A and 47B , the adjustment connector N400 can be a separate component from the adjustment operating member N300. Furthermore, the adjustment operating member N300 is movably disposed on the seat N10, and the adjustment connector N400 is connected to the adjustment operating member N300. Thus, when the adjustment operating member N300 moves relative to the seat N10, it can drive the adjustment connector N400 to move between a first position and a second position.

To facilitate the connection between the adjustment connector N400 and the adjustment operating member N300, as shown in Figures 52A to 53B and 56, the adjustment connector N400 has a connector driver N420 that is connected to the adjustment operating member N300.

In the embodiment shown in Figures 54 to 56 , the adjustment operating member N300 is provided with an operating member fixing hole N330, and the connector driving portion N420 of the adjustment connecting member N400 is provided with a connector fixing hole N421. A connector fixing structure N430 (see Figures 52B and 53B ) passes through the operating member fixing hole N330 and the connector fixing hole N421 to connect the adjustment connecting member N400 to the adjustment operating member N300.

The connector fixing structure N430 can be rivets, screws, or pins, etc.

To prevent relative rotation between the adjustment operating member N300 and the adjustment connecting member N400 during connection, which could cause misalignment between the operating member fixing hole N330 and the connecting member fixing hole N421, in the embodiments shown in Figures 54 to 56 , the connecting member driver N420 can be configured to have a non-circular cross-section (e.g., a flat shape as shown in Figure 56 , or an elliptical or polygonal shape). The adjustment operating member N300 is provided with an operating member connecting groove N340. The cross-section of the operating member connecting groove N340 corresponds in shape and size to the cross-section of the connecting member driver N420, preventing the connecting member driver N420 from rotating about its axis within the operating member connecting groove N340.

Of course, the adjustment connector N400 and the adjustment operating member N300 can be connected in a variety of other ways.

For example, the operating member fixing hole N330 of the adjustment operating member N300 is formed as a threaded hole, and the connecting member driving portion N420 of the adjustment connecting member N400 is formed as a threaded structure, so that the adjustment connecting member N400 and the adjustment operating member N300 are directly screwed together.

Alternatively, the adjustment connector N400 and the adjustment operating part N300 can be welded together.

To guide the movement of the adjustment operating member N300 relative to the seat N10, the crotch strap length adjustment device according to the present disclosure may further include an operating member guide structure N320, which is disposed on the seat N10 and configured to guide the movement of the adjustment operating member N300.

In the embodiment shown in Figures 50B and 51B, the operating member guide structure N320 is a bar-shaped structure, with its two ends fixed to the seat N10 via guide structure fixing members N321. The guide structure fixing members N321 can be screws, anchors, or other fixing members.

Of course, the operating member guide structure N320 can adopt a variety of other structures. For example, the operating member guide structure N320 can be a guide groove, a guide rib, or a guide pin, which adopts a concave-convex fit with the adjustment operating member N300.

To further simplify user operation of the crotch strap length adjustment device, in the embodiment shown in Figures 50A to 51B , the crotch strap length adjustment device according to the present disclosure may further include an operating member reset elastic member N310, which is configured to directly or indirectly drive the adjustment connector N400 toward the first position and maintain the first position.

Under the elastic force of the operating member reset spring N310, the adjustment connector N400 tends to move toward the first position, where it engages with the crotch strap adjustment structures N101C and N102C, and tends to remain in this first position. Thus, after the adjustment connector N400 engages with one of the crotch strap adjustment structures N101C and N102C on the active end of the crotch strap N100, the operating member reset spring N310 resets, retaining the adjustment connector N400 in the first position and ensuring the stability of the crotch strap length adjustment device.

Furthermore, because the operating member's return spring N310 maintains the adjustment link N400 in the first position, it prevents the adjustment link N400 from accidentally becoming detached from the crotch strap adjustment structures N101C and N102C. This improves the safety of the crotch strap length adjustment device.

When the user is ready to disengage the adjustment connector N400 from the crotch strap adjustment structures N101C and N102C, the user simply needs to overcome the elastic force of the operating member's reset elastic member N310 to move the adjustment connector N400 toward the second position, where it disengages from the crotch strap adjustment structures N101C and N102C.

In one embodiment, the operating member reset elastic member N310 can be directly connected to the adjustment link N400, thereby directly driving the adjustment link N400 to move toward the first position and maintain it in the first position.

In the embodiment shown in Figures 50A to 51B, the operating member reset elastic member N310 is connected to the adjustment operating member N300, thereby indirectly driving the adjustment connecting member N400 to move toward the first position and maintain it in the first position through the adjustment operating member N300.

In this embodiment, as shown in Figures 50A and 51B, the operating member's return spring N310 is a tension spring having a first return spring end N310A and a second return spring end N310B. The first return spring end N310A is connected to the return spring connection structure N112 on the seat N10, while the second return spring end N310B is connected to the return spring connection portion N350 on the adjustment operating member N300 (see Figure 55).

Furthermore, as shown in Figures 54 and 55 , the adjustment operating member N300 can be provided with a return spring housing N370 for accommodating the operating member return spring N310. This prevents the adjustment operating member N300 and the operating member return spring N310 from occupying separate spaces, making the entire crotch strap length adjustment device more compact.

Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component to another in the figures, these terms are used in this specification for convenience only, for example, based on the orientation of the illustrations depicted in the accompanying figures. It should be understood that if the illustrated device is turned upside down, the component described as "upper" would become the component "lower." Other relative terms such as "top," "bottom," "left," and "right" have similar meanings. When a structure is "on" another structure, it may mean that the structure is integrally formed on the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through the other structure.

In this specification, the terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components; the terms "comprising," "including," and "having" are used to convey an open-ended, inclusive meaning that additional elements/components/etc. may be present in addition to the listed elements/components/etc.; the terms "first," "second," and "third," etc., are used merely as labels and do not limit the quantity of the items to which they refer.

Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It should also be understood that terms should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly defined herein.

It should be understood that while preferred embodiments have been shown and described above, the present disclosure is not limited to the specific embodiments described above, and that various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the appended claims. Therefore, it should be noted that various modifications and variations cannot be considered as exceeding the technical spirit and scope of the present disclosure.

100: Support plate

200: Seat

Claims (9)

A child safety seat comprises: a seat; a support plate disposed at the front end of the seat and capable of sliding and extending relative to the seat; wherein the support plate is provided with a support plate adjustment mechanism for adjusting the length of the support plate extending from the seat, wherein the support plate comprises a support plate body and a first connecting member, one end of the first connecting member being fixed to the support plate body; the other end of the first connecting member extending from the support plate body and being inserted and engaged with the seat, thereby The support plate is slidably connected to the seat, and the support plate adjustment mechanism includes a positioning structure, which is movably provided on the support plate body to position the support plate at at least one position of the seat; the support plate adjustment mechanism also includes an operating mechanism, which is at least partially movably provided on the support plate and includes two operating members, which are slidably provided on both sides of the support plate and can slide between a locking position and a release position. wherein, when any of the operating members is in the locking position, the operating member drives the positioning structure to lock the support plate and the seat portion to restrict the support plate from moving relative to the seat portion; and when the operating member is in the releasing position, the operating member drives the positioning structure to release to allow the support plate to move relative to the seat portion; wherein, the operating mechanism further comprises: two driving members, each of which is slidably provided on the support plate and can be operated as the corresponding operating member is operated and two traction member assemblies, each comprising a first traction member and a second traction member, wherein the first traction member is configured to be connected between the operating member and the driving member on the same side of the support plate to interlock the driving member and the operating member, and wherein the second traction member is connected between the operating member on one side of the support plate and the driving member on the other side of the support plate, wherein at least one of the first traction member and the second traction member is a flexible element. The child safety seat according to claim 1, wherein a second connecting member is provided on the upper surface of the support plate body, the second connecting member being slidably engaged with the lower surface of the seat portion, wherein the second connecting member is a guide rib or a guide groove. The child safety seat according to claim 1, wherein the positioning structure includes a first locking member, the first locking member being disposed on the support plate body and being movable between a locked position and an unlocked position; a second locking member being disposed on the lower surface of the seat portion, and a through-hole being formed through the upper surface of the support plate body; an engaging end of the first locking member being capable of extending from and retracting through the through-hole to engage with and disengage from the second locking member; wherein the first locking member is a positioning pin, and the second locking member is a positioning hole, and a plurality of the second locking members are disposed along the front-rear direction of the seat portion; and the positioning structure further includes an elastic member configured to bias the first locking member toward extending out of the through-hole. The child safety seat according to claim 4, wherein the first connecting member includes two connecting rods disposed on either side of the support plate body; the two ends of the operating member are respectively sleeved on the two connecting rods so as to be able to slide along the extension direction of the connecting rods; the operating member is provided with a pushing rib having a guiding slope; when the operating member slides, the guiding slope abuts against the first locking member to move from the locked position to the unlocked position. The child safety seat according to claim 3, wherein the first traction member includes a first traction wire having a first end, a wire portion, and a second end. The first and second ends of the first traction wire are respectively fixedly connected to the operating member and the driving member on the same side, such that when the operating member is operated, the driving member moves. The first traction member further includes a first sheath, which is disposed over the first traction wire. The child safety seat according to claim 3, wherein the first traction member includes a first traction wire and a first sheath, wherein a first end of the first traction wire is fixedly connected to the driving member on the same side, and a second end of the first traction wire is fixedly connected to the support plate; and the first sheath is disposed over the first traction wire, wherein a first end of the first sheath abuts the support plate, and a second end of the first sheath is connected to the operating member. The child safety seat according to claim 6 or 7, wherein the second traction member includes a second traction wire and a second cover, wherein a first end of the second traction wire is connected to the operating member on one side of the support plate, and a second end of the second traction wire is connected to the driving member on the other side of the support plate; and wherein the second cover is disposed over the second traction wire, wherein a first end of the second cover is fixed to one side of the support plate, and a second end of the second cover is fixed to the other side of the support plate. A child safety seat according to claim 1, wherein the child safety seat includes a headrest height adjustment mechanism, the headrest height adjustment mechanism comprising: an operating member slidably mounted on a headrest, the operating member having an initial position, a first operating position, and a second operating position relative to the headrest; a locking assembly for locking with a height adjustment gear, the locking assembly having a locked position and a released position and being switchable between the locked position and the released position; and a driving member, one end of the driving member being slidably connected to the operating member and the other end of the driving member abutting the locking assembly, the operating member being switched from the first operating position to the second operating position, thereby causing the driving member to move and drive the child safety seat. The locking assembly switches from the locked position to the unlocked position; and a safety locking mechanism includes a limit member provided on the operating member and an engaging slot provided on the locking assembly. When the operating member switches from the first operating position to the second operating position, the limit member engages with the engaging slot to lock the locking assembly in the locked position, thereby switching the locking assembly from the locked position to the unlocked position. When the operating member switches from the initial position to the first operating position, the limit member separates from the engaging slot, allowing the safety locking mechanism to release the locking assembly. The sliding direction of the limit member is the same as the sliding direction of the operating member. A child safety seat comprises a seat and a crotch strap length adjustment device provided on the seat, wherein the crotch strap length adjustment device comprises: a crotch strap having a movable end that can be detachably connected to the seat of a child carrier, wherein the movable end is provided with a plurality of crotch strap adjustment structures arranged along the length direction of the crotch strap; an adjustment connector arranged on the seat, capable of engaging with one of the crotch strap adjustment structures on the movable end to prevent the corresponding crotch strap from leaving the seat, and capable of disengaging from the crotch strap adjustment structure to allow the corresponding crotch strap to leave the seat; wherein the crotch strap The adjustment link is disposed on the seat portion so as to be movable between a first position and a second position. Furthermore, the adjustment link is configured to engage with one of the crotch strap adjustment structures in the first position and disengage from the crotch strap adjustment structure in the second position. An adjustment operating member is disposed so as to be exposed from the seat portion and capable of being subjected to an applied force to drive the adjustment link between the first position and the second position. Furthermore, an operating member return spring is configured to directly or indirectly drive the adjustment link toward the first position and maintain it in the first position.