CN111376961B - Child cart - Google Patents

Abstract

The invention discloses a child stroller, comprising a frame including a bottom bracket and a push handle and a seat bracket, wherein the bottom bracket, the seat bracket and the push handle are connected via an electric bell, the electric bell comprising a seat connecting seat, a first electric bell outer member, electric bell teeth, a second electric bell outer member, a first elastic member and an unlocking assembly, the seat connecting seat comprising a secondary locking mechanism adapted to the electric bell teeth, the seat bracket being connected to the seat connecting seat; the first electric bell outer member being fixedly connected to the upper end of the bottom bracket, the second electric bell outer member being fixedly connected to the lower end of the push handle, The seat connecting base, the first electric bell outer member and the second electric bell outer member are rotationally connected around the rotating shaft, and the first electric bell outer member is located between the seat connecting base and the second electric bell outer member; the unlocking component is used to drive the electric bell tooth to move toward the first electric bell outer member; when the frame and the seat bracket are in the unfolded state, the electric bell tooth is locked by the secondary locking mechanism and cannot move toward the first electric bell outer member, thereby preventing the user from operating it incorrectly, and the frame is folded when the child is still sitting in the seat, thereby causing harm to the child.

Description

A child stroller

Technical Field

The present invention relates to the technical field of children's products, in particular to a children's stroller.

Background Art

A child stroller in the prior art comprises a stroller frame having an unfolded position and a folded position, a front wheel assembly and a rear wheel assembly disposed at the bottom of the stroller frame, a seat disposed on the stroller frame, and a locking structure for locking the stroller frame in the unfolded state. In the prior art, if the seat is still on the stroller frame, the stroller frame can be folded when the unlocking switch is pressed, which may cause harm to the child riding in the stroller in the event of a user's misoperation, posing a potential risk.

Summary of the invention

The object of the present invention is to provide an improved baby stroller in view of the deficiencies in the prior art.

To achieve the above object, the technical solution adopted by the present invention is:

A child stroller, comprising a frame and a seat bracket having folded and unfolded states, respectively, the frame comprising a bottom bracket and a push handle, the bottom bracket, the seat bracket and the push handle being connected via an electric bell, the bottom bracket comprising a wheel assembly, and the electric bell comprising:

A seat connecting seat, the seat bracket and the seat connecting seat are detachably connected;

a first electric bell external part, wherein the first electric bell external part is fixedly connected to the upper end of the bottom bracket;

A second electric bell external part, the second electric bell external part is fixedly connected to the lower end of the push handle, the base connecting seat, the first electric bell external part and the second electric bell external part are rotatably connected around a rotation axis, and the first electric bell external part is located between the base connecting seat and the second electric bell external part;

An electric bell tooth, wherein the electric bell tooth is arranged between the first electric bell external component and the second electric bell external component;

A first elastic member, the first elastic member is used to push the electric bell tooth to move toward the second electric bell outer member, and the first elastic member is preferably arranged between the first electric bell outer member and the electric bell tooth;

An unlocking assembly, the unlocking assembly is used to drive the electric bell tooth to move toward the first electric bell external part, and the unlocking assembly preferably includes an unlocking block arranged between the electric bell tooth and the second electric bell external part and a switch arranged on the frame for user operation; wherein,

The seat connecting base is also provided with a secondary locking mechanism adapted to the electric bell tooth. When the frame and the seat bracket are both in an unfolded state, the electric bell tooth is locked by the secondary locking mechanism and cannot move toward the first electric bell external component, and the frame cannot be unlocked; when the seat bracket is in a folded state or the seat bracket is detached from the frame, the electric bell tooth can be driven by the unlocking component to move toward the first electric bell external component, and the frame can be unlocked.

In some optional embodiments, a limit hole is provided on the first electric bell external component, a limit column is provided on the side of the electric bell tooth facing the first electric bell external component, and the limit column is passed through the limit hole; the secondary locking mechanism includes a safety bolt arranged on the seat connecting base for abutting against the limit column.

When the frame and the seat bracket are both in the unfolded state, the limit post of the electric bell tooth contacts the safety bolt and is locked by the secondary locking mechanism, and thus cannot move toward the first electric bell external component; when the seat bracket is in the folded state or the seat bracket is detached from the frame, the safety bolt rotates together with the seat bracket, so that the position of the safety bolt and the limit post are misaligned, or the safety bolt can move together with the limit post, so that it cannot lock the electric bell tooth. At this time, the electric bell tooth can be driven by the unlocking component to move toward the first electric bell external component, and the frame can be unlocked.

In some optional embodiments, the safety bolt includes a first support column close to the limit column and one end of which is used to abut against the limit column, and the support surface of the first support column is arranged to face the support surface of the limit column. When the frame and the seat bracket are both in the unfolded state, when trying to push the electric bell tooth through the unlocking component, the support surface of the first support column will abut against the support surface of the limit column, the electric bell tooth will not be able to move toward the first electric bell outer part, and the frame cannot be unlocked.

In some optional embodiments, the safety bolt is movably arranged on the seat connection seat in a direction parallel to the rotation axis. When the seat bracket is in a folded state or the seat bracket is separated from the frame, the safety bolt can move together with the limit column, thereby making it impossible to lock the electric bell tooth. At this time, the electric bell tooth can be driven by the unlocking component to move toward the first electric bell outer part, and the frame can be unlocked and then folded.

In some optional embodiments, the seat connection base is provided with a support through hole, and the safety bolt further includes a second support column away from the limit column, the second support column is slidably inserted into the support through hole, and one end of the second support column can slide out of the outer end surface of the seat connection base. At this time, when the seat bracket mounted on the frame is in an unfolded state, the support surface of the second support column will be adjacent to the seat bracket, and when an attempt is made to push the electric bell tooth through the unlocking component, the support surface of the second support column will conflict with the seat bracket.

In some optional embodiments, a second elastic member is further provided between the safety bolt and the seat connector, and the elastic force of the second elastic member is used to move the safety bolt toward the limiting column. At this time, when the unlocking assembly is unlocked, the electric bell tooth will push the safety bolt to move in a direction away from the limiting column through the limiting column; when the electric bell tooth returns to its initial position under the action of the first elastic member, the safety bolt will move toward the limiting column under the action of the second elastic member, and then return to its initial position. Through the provision of the second elastic member, the secondary locking mechanism can spontaneously return to its initial state, and the user can realize the interaction between the unlocking assembly and the secondary unlocking mechanism without additional operation, and the structure of the stroller is simpler.

In some optional embodiments, the secondary locking mechanism also includes a cover plate, which is detachably fixed to the seat connector via a connector, and the safety bolt is arranged between the seat connector and the cover plate to facilitate the installation and replacement of the safety bolt and the second elastic member.

In some optional embodiments, a cover plate through hole is further provided on the cover plate, and the first support column can be movably inserted into the cover plate through hole.

In some optional embodiments, a second elastic member is further provided between the safety bolt and the seat connecting base, and the elastic force of the second elastic member is used to move the safety bolt toward the limiting column; the second elastic member is a compression spring, and under the action of the elastic force of the second elastic member, at least a portion of the safety bolt is in contact with the cover plate.

In some optional embodiments, a side of the seat connection seat facing the first bell external part is provided with an avoidance structure, the avoidance structure is an annular groove, and the safety bolt is arranged in the annular groove; when the seat bracket is in a folded state, the safety bolt is rotated and misaligned with the limit column, and the bell tooth can be driven by the unlocking component to move toward the first bell external part. At this time, the limit column is located in the annular groove, and there is a gap between the limit column and the safety bolt, which can rotate in the annular groove.

In some optional embodiments, the secondary locking mechanism also includes a cover plate, which is detachably fixedly connected to the seat connecting base via a connecting piece; the safety bolt includes a support plate, a first support column protruding on the support plate toward the cover plate, and a second support column arranged on the support plate away from the cover plate, and the support surface of the first support column is arranged opposite to the support surface of the limiting column; a supporting through hole is provided on the seat connecting base, and the second support column is passed through the supporting through hole, and one end of the second support column can slide out of the outer end surface of the seat connecting base; the support plate is also provided with an elastic member limiting groove on the side where the second support column is provided, one side of the second elastic member is provided in the elastic member limiting groove, and the other side of the second elastic member is in contact with the seat connecting base.

Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the child stroller of the present invention is provided with a secondary locking structure, when the frame and the seat bracket are both in the unfolded state, the electric bell tooth is locked by the secondary locking mechanism and cannot move toward the first electric bell external component, and the frame cannot be unlocked, thereby preventing the user from unlocking the unlocking component in the event of a misoperation, and then the frame is folded when the child is still sitting in the seat, thereby causing harm to the child; when the frame needs to be folded, the seat bracket can be unloaded from the frame, or the seat bracket can be flipped forward to achieve folding, and the electric bell tooth can be driven by the unlocking component to move toward the first electric bell external component, and the frame can be unlocked.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic side view of the child stroller of the present invention in an unfolded state;

FIG2 is a partially enlarged cross-sectional schematic diagram of the child stroller of the present invention taken along the line A-A in FIG1 ;

FIG3 is a perspective view of the seat support of the child stroller of the present invention in a folded state from a first viewing angle;

FIG4 is a partial exploded schematic diagram of the seat support of the child stroller of the present invention in a folded state from a second viewing angle;

FIG5 is a partial exploded schematic diagram of the seat support of the child stroller of the present invention in a folded state from a third viewing angle;

FIG6 is a schematic diagram of the seat support of the child stroller of the present invention in a folded state from a fourth viewing angle;

Accompanying drawing 7 is a schematic cross-sectional view taken along the D-D direction in Fig. 6;

Figure 8 is a partial enlarged schematic diagram of Figure 7;

FIG9 is a schematic diagram of the three-dimensional structure of the seat support of the child stroller of the present invention when it is removed;

FIG10 is a partially enlarged schematic diagram of the seat support of the child stroller of the present invention when it is removed.

Among them: 1-frame; 11-bottom bracket; 12-push handle; 121-handle; 2-seat bracket; 21-seat unlocking handle; 3-electric bell; 31-seat connecting seat; 311-avoidance structure; 32-first electric bell external part; 33-electric bell teeth; 331-limiting column; 34-second electric bell external part; 35-first elastic part; 36-unlocking component; 361-unlocking button; 362-unlocking block; 37-pin shaft; 4-secondary locking mechanism; 411-first support column; 412-second support column; 413-support plate; 42-second elastic part; 43-cover plate.

DETAILED DESCRIPTION

The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art.

It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature, or it may be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in the present invention are only relative to the relative positional relationship of the components of the present invention in the drawings.

As shown in FIGS. 1-10 , the present embodiment provides a child stroller, which comprises a frame 1 having a folded state and an unfolded state respectively and a seat bracket 2 rotatably arranged on the frame 1, the seat bracket 2 is integrated with a seat for supporting and accommodating a child passenger and a seat unlocking handle for unlocking the seat bracket 2 and the frame 1 to rotate, the frame 1 comprises a bottom bracket 11 and a push handle 12, the push handle 12 also comprises a handle 121 for an adult to hold; the bottom bracket 11, the seat bracket 2 and the push handle 12 are connected through an electric bell 3, the bottom bracket 11 comprises a wheel assembly, the electric bell 3 comprises a seat connecting seat 31, a first electric bell outer part 32, an electric bell tooth 33, a second electric bell outer part 34, a first elastic member 35 and an unlocking assembly 36, wherein:

The seat connection base 31 includes a seat connection surface and a frame connection surface that are arranged opposite to each other, and the seat bracket 2 is detachably connected to the seat connection base 31; in this embodiment, when the seat bracket 2 is folded by rotating forward and downward, the seat connection base 31 will rotate forward and downward synchronously. In this embodiment, a pin shaft 37 is fixedly arranged on the frame connection surface, and the length direction of the pin shaft 37 extends transversely to the seat connection base 31.

The first bell outer member 32 is fixedly connected to the upper end of the bottom bracket 11. In this embodiment, the first bell outer member 32 having a first limiting groove on its inner circumference is sleeved on the rotating shaft formed by the pin shaft 37 and is rotatably connected to the seat connecting seat 31. In this embodiment, a limiting hole is provided on the first bell outer member 32, and a limiting column 331 is provided on the side of the bell tooth 33 facing the first bell outer member 32, and the limiting column 331 is inserted into the limiting hole.

The bell tooth 33 and the second bell outer member 34 are sleeved on the pin shaft 37 in sequence. The second bell outer member 34 is fixedly connected to the lower end of the push handle 12. A second limiting groove is provided on the inner periphery of the second bell outer member 34. A limiting tooth is provided on the outer periphery of the bell tooth 33. The bell tooth 33 is arranged between the first bell outer member 32 and the second bell outer member 34. The bell tooth 33 is movable along the axial direction of the pin shaft 37. The limiting teeth are respectively matched with the first limiting groove and the second limiting groove.

The first elastic member 35 is used to push the bell tooth 33 to move toward the second bell outer member 34, and is preferably a compression spring disposed between the first bell outer member 32 and the bell tooth 33;

The unlocking assembly 36 for driving the electric bell tooth 33 to move toward the first electric bell outer member 32 along the axial direction of the pin shaft 37 preferably includes an unlocking block 362 disposed between the electric bell tooth 33 and the second electric bell outer member 34 and a switch for user operation disposed on the handle 121 of the frame 1. In this embodiment, the switch is an unlocking button 361;

As shown in Figure 2, the seat connecting base 31 is also provided with a secondary locking mechanism 4 adapted to the electric bell teeth 33. The secondary locking mechanism 4 includes a safety bolt arranged on the seat connecting base 31 and adapted to the limiting column 331, and a cover plate 43 with a through hole. The cover plate 43 is detachably fixed to the seat connecting base 31 through a connecting piece. In this embodiment, the connecting piece is a screw.

The safety bolt includes a support plate 413, a first support column 411 and a second support column 412. The first support column 411 is protruding toward the cover plate 43 and is arranged on the support plate 413. The second support column 412 is protruding toward the direction away from the cover plate 43 and is arranged on the support plate 413. The safety bolt is movably arranged on the seat connection seat 31 along the length direction of the first support column 411 (i.e., parallel to the moving direction of the electric bell teeth 33). The cover plate 43 is detachably fixedly connected to the seat connection seat 31 through a connecting piece. The first support column 411 is movably inserted into the through hole of the cover plate. The support surface of the first support column 411 is aligned with the support surface of the limit column 331. The supporting surfaces are arranged facing each other; a supporting through hole is provided on the seat connection seat 31, and the second supporting column 412 is inserted in the supporting through hole, and one end of the second supporting column 412 can slide out of the outer end surface of the seat connection seat; the support plate 413 is also provided with an elastic member limiting groove on the side where the second supporting column 412 is provided, and another elastic member limiting groove is also provided on the seat connection seat 31. The second elastic member 42 in this embodiment is a compression spring, and the two sides of the second elastic member 42 are respectively arranged in the elastic member limiting grooves on the support plate 413 and the seat connection seat 31, and the two sides of the second elastic member 42 are respectively in conflict with the seat connection seat 31 and the support plate 413. The elastic force of the second elastic member 42 is used to make the safety bolt move toward the limiting column, and under the action of the elastic force of the second elastic member 42, at least a part of the safety bolt conflicts with the cover plate 43.

As shown in Figures 1 and 2, when the seat bracket 2 installed on the frame 1 is in the unfolded state together with the frame 1, the support surface of the second support column 412 will be adjacent to the seat bracket 2. When an attempt is made to push the unlocking block 362 by pressing the unlocking button 361 to push the bell tooth 33 toward the first bell outer part 32, the support surface of the second support column 412 will conflict with the seat bracket 2, making it impossible for the bell tooth 33 to move, the bell cannot be unlocked, and the frame 1 cannot be folded.

As shown in Fig. 3-8, when the seat unlocking handle 21 is pulled and the seat bracket 2 is flipped forward and folded downward, the safety bolt rotates together with the seat bracket 2. As shown in Fig. 7-8, the first support column 411 of the safety bolt located in the avoidance structure 311 will be misaligned with the position of the limit column 331, so that the secondary locking device 4 cannot lock the axial movement of the electric bell tooth 33. At this time, there is a gap between the seat connecting seat 31 and the limit column 331, and the limit column 331 can move toward the seat connecting seat 31. At this time, the electric bell tooth 33 can be driven by the unlocking component 36 to move toward the first electric bell outer part 32, and the frame can be unlocked. In this embodiment, the avoidance structure 311 is an annular groove.

As shown in Figures 9-10, when the seat bracket 2 and the seat are separated from the frame 1, there will be no obstacles outside the support surface of the second support column 412, and the safety bolt can be pushed by the limiting column 331 and move together. At this time, the electric bell tooth 33 can be driven by the unlocking component 36 to move toward the first electric bell outer part 32, and the frame can be unlocked.

When the stroller is unfolded from the folded state to the unfolded state, the electric bell tooth 33 is reset under the action of the first elastic member 35, and the safety bolt is reset under the action of the second elastic member 42, so that the secondary locking mechanism can spontaneously return to the initial state. The user can realize the interaction between the unlocking assembly and the secondary unlocking mechanism without additional operation, and the structure of the stroller is simpler.

The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the essence of the body-tightening device of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a children's shallow, children's shallow includes the frame and the seat root of a foot support that have folding state and expansion state respectively, the frame includes bottom support and pushing away the handle, bottom support the seat root of a foot support with push away the handle and pass through the electric bell and connect, its characterized in that, the electric bell includes:

The seat root connecting seat is detachably connected with the seat root bracket;

The first bell outer piece is fixedly connected with the upper end of the bottom bracket;

the second electric bell outer piece is fixedly connected with the lower end of the push handle, the seat stump connecting seat, the first electric bell outer piece and the second electric bell outer piece are rotationally connected around the rotating shaft, and the first electric bell outer piece is positioned between the seat stump connecting seat and the second electric bell outer piece;

the electric bell teeth are arranged between the first electric bell outer piece and the second electric bell outer piece, and a limit column is arranged on one side of the electric bell teeth facing the first electric bell outer piece;

the first elastic piece is used for pushing the bell teeth to move towards the second bell outer piece;

the unlocking component is used for driving the bell teeth to move towards the first bell outer piece; wherein,

The secondary locking mechanism is also arranged on the seat stump connecting seat and is matched with the bell teeth, the secondary locking mechanism comprises a safety bolt which is arranged on the seat stump connecting seat and is used for propping against the limit post, the safety bolt is movably arranged on the seat stump connecting seat along the direction parallel to the rotation axis and comprises a first support post and a second support post, the first support post is close to the limit post, one end of the first support post is used for propping against the limit post, one end of the second support post is glidingly extended out of the outer end face of the seat stump connecting seat,

When the frame and the seat stump support are in an unfolding state, the supporting surface of the second supporting column is adjacent to the seat stump support, and the bell teeth are locked by the secondary locking mechanism and cannot move towards the first bell outer piece; when the seat stump bracket is in a folding state, the safety bolt is rotated to be misplaced with the limit post, and the bell teeth can be driven by the unlocking component to move towards the first bell outer piece;

When the seat root bracket is separated from the frame, no barrier exists outside the supporting surface of the second supporting column, and the bell teeth can be driven by the unlocking component to move towards the first bell outer part.

2. The stroller of claim 1, wherein the first bell outer member is provided with a limiting hole, and the limiting post is disposed through the limiting hole.

3. The stroller of claim 1, wherein the seat is provided with a support through hole, and the safety pin further comprises a second support post remote from the limit post, the second support post slidably disposed in the support through hole.

4. A stroller according to claim 1 or 3, wherein a second elastic member is further arranged between the safety pin and the seat connection seat, and the elastic force of the second elastic member is used for enabling the safety pin to move towards the limit post.

5. The stroller of claim 1, wherein the secondary locking mechanism further comprises a cover plate detachably fixedly connected to the seat base via a connector, the safety pin being disposed between the seat base and the cover plate; the cover plate is further provided with a cover plate through hole, and the first support column movably penetrates through the cover plate through hole.

6. The stroller of claim 5, wherein a second elastic member is further disposed between the safety pin and the seat connection base, and the elastic force of the second elastic member is used to move the safety pin toward the limit post; the second elastic piece is a compression spring, and at least one part of the safety bolt is abutted against the cover plate under the action of the elastic force of the second elastic piece.

7. The stroller of claim 1, wherein a side of the seat connection towards the first bell outer member is provided with a relief structure, the relief structure is an annular groove, and the safety pin is disposed in the annular groove.

8. The stroller of claim 1, wherein the secondary locking mechanism further comprises a cover plate detachably fixedly connected to the seat attachment base by a connector; the safety bolt comprises a supporting plate, a first supporting column and a second supporting column, the first supporting column is arranged on the supporting plate in a protruding mode towards the cover plate, the second supporting column is arranged on the supporting plate in a mode away from the cover plate, and the supporting surface of the first supporting column and the supporting surface of the limiting column are arranged in a mode of being opposite to each other; the seat pocket connecting seat is provided with a supporting through hole, the second support column is arranged in the supporting through hole in a penetrating mode, and one end of the second support column can extend out of the outer end face of the seat pocket connecting seat in a sliding mode; the support plate is provided with an elastic piece limiting groove on one side of the second support column, a second elastic piece is further arranged between the safety bolt and the seat pocket connecting seat, one side of the second elastic piece is arranged in the elastic piece limiting groove, and the other side of the second elastic piece is in contact with the seat pocket connecting seat.