CN113276933B - Children's barrow - Google Patents

Abstract

The invention discloses a children's stroller, comprising a stroller frame, a wheel assembly and a braking mechanism with braking and releasing states. The stroller frame includes a push rod assembly and a push handle rotatably connected with the push rod assembly. The children's stroller It also includes a driving mechanism, the driving mechanism includes a driving member rotatably arranged in the push rod assembly, the push handle is matched or movably connected with the driving member, and the driving member and the braking mechanism are connected by a flexible connecting member, and the braking mechanism is in the braking state. When the push handle is rotated relative to the push rod assembly, the drive member is driven to rotate relative to the push rod assembly through the cooperation or connection between the push handle and the driving member, and the braking mechanism is released by pulling the braking mechanism through the flexible connecting member. When the push handle is not held by the hand, the braking mechanism will brake to prevent the push handle from traveling, thereby avoiding the accident of the push handle being out of control. The brake mechanism is released, and the stroller can move forward or backward at will.

Description

a children's stroller

technical field

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

Background technique

Strollers provide great convenience for adults to carry smaller children for outdoor activities. Therefore, strollers have gradually become a necessity for adults to carry children for outdoor activities. Therefore, the safety of strollers must be paid attention to when using them. .

In order to improve the safety performance of the stroller, a braking mechanism is generally provided on the stroller. At present, the braking mechanism of the stroller on the market generally has two types: manual type or electronic induction type. For the manual braking mechanism, when the stroller stops, an additional action is required to operate the braking mechanism to lock the wheel assembly. Due to negligence and forgetting to operate the brake mechanism, there is a risk of losing control of the stroller; for the electronic induction brake mechanism, parents need to check whether the battery power and the circuit function are normal before using it, otherwise, there may be lines during use. In the event that a 'power failure' causes the brake mechanism to function abnormally, the stroller also has the risk of losing control. Therefore, whether a manual or electronic induction braking mechanism is used, the stroller has certain safety hazards.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an improved stroller for children in view of the deficiencies in the prior art.

To achieve the above object, the technical scheme adopted in the present invention is:

A stroller includes a stroller frame, a wheel assembly disposed at the bottom of the stroller frame, and a braking mechanism for braking the wheel assembly to prevent the stroller from traveling, the brake The mechanism has a state of braking and releasing, and the frame of the stroller includes a push rod assembly and a push handle for human hands to hold when pushing the child stroller, the push handle and the push rod assembly are connected to each other through a first shaft. rotatably connected, the stroller further includes a drive mechanism for driving the brake mechanism to switch between the braking state and the unbraking state, the drive mechanism includes a second shaft rotatably disposed in the push rod assembly The push handle is matched or movably connected with the drive member, and the drive member and the braking mechanism are connected by a flexible connecting member. When the human hand leaves the push handle, the braking mechanism is in a In the braking state, when a person holds the push handle to push the stroller, the push handle rotates relative to the push rod assembly, and the drive member is driven through the cooperation or connection between the push handle and the drive member Rotating relative to the push rod assembly, the brake mechanism is pulled by the flexible connecting piece to release the brake mechanism and is in a release state.

Preferably, a first gear is fixedly arranged on the push handle, a second gear is fixedly arranged on the driving member, and the first gear is engaged with the second gear.

Further, the axle of the second gear is arranged coaxially with the second shaft, the driving member is provided with a connecting portion, and one end of the flexible connecting member is fixedly connected to the connecting portion, and the first The two shafts and the connecting portion are respectively located on opposite sides of the driving member, and the diameter of the index circle of the first gear is larger than the diameter of the index circle of the second gear.

Preferably, a third shaft is disposed between the push handle and the driving member, the third shaft is fixedly arranged on the push handle, and the third shaft is slidably disposed relative to the driving member, Alternatively, the third shaft is fixedly arranged on the driving member, and the third shaft is slidably arranged relative to the push handle.

Further, the driving member is provided with a connecting portion, one end of the flexible connecting member is fixedly connected to the connecting portion, and on the driving member, the second shaft and the connecting portion are respectively located at the On the opposite sides of the driving member, the distance between the connecting portion and the second shaft is greater than the distance between the third shaft and the second shaft.

Preferably, the driving mechanism further includes a guide member for guiding the direction of the flexible connecting member, the guide member is rotatably disposed in the push rod assembly, and the flexible connecting member passes through the guide.

Preferably, the driving mechanism further includes a first elastic member for driving the braking mechanism to return from the unbraking state to the braking state when the push handle is released, and two ends of the first elastic member are respectively provided with on the brake mechanism and the cart frame.

Preferably, the driving mechanism further includes a second elastic member for driving the push handle to reset when the push handle is released, and two ends of the second elastic member are respectively disposed on the push handle and the on the push rod assembly.

Preferably, the push rod assembly includes a push rod, and the push rod includes two first sections extending upwardly obliquely from front to rear and a second section extending in the left-right direction and connected between the two first sections , the rotational connection between the push handle and the push rod assembly is located on the first section, and when the push rod is pushed, the push handle rotates downward to be close to the push rod and at least cover the Above the front of the push rod, when the push handle is released, the push handle rotates upward and away from the push rod.

Further, a fixing seat is provided on the first section, the push handle and the push rod assembly are rotatably connected at the fixing seat, and the driving member is rotatably arranged in the fixing seat.

Due to the application of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art: the stroller of the present invention has a simple structure, and when the human hand does not hold the push handle, the braking mechanism brakes to prevent the stroller from traveling, thereby preventing the stroller from traveling. Avoid the accident of the baby stroller out of control, and greatly improve the safety performance of the baby stroller. When the human hand holds the push handle and rotates the push handle, it can drive the driving part matched or connected with the push handle to the relative push rod assembly By rotating, the brake mechanism can be pulled through the flexible connecting piece, so that the brake mechanism can be released, and the stroller can move forward or backward at will, which makes the stroller very convenient to use.

Description of drawings

Accompanying drawing 1 is the structural representation of the stroller of the present invention;

Accompanying drawing 2 is the structural representation of the push handle part of the stroller of the present invention (Embodiment 1, the braking mechanism is in the braking state);

Accompanying drawing 3 is the structural schematic diagram of the wheel assembly part of the stroller of the present invention (Embodiment 1, the braking mechanism is in the braking state);

Accompanying drawing 4 is the structural schematic diagram of the push handle part of the stroller of the present invention (Embodiment 1, the brake mechanism is in the unbraking state);

Accompanying drawing 5 is the structural schematic diagram of the wheel assembly part of the stroller of the present invention (Embodiment 1, the brake mechanism is in the release state);

6 is an exploded view of the push handle part of the stroller of the present invention (Embodiment 1);

Accompanying drawing 7 is the structural schematic diagram of the push handle part of the stroller of the present invention (Embodiment 2, the braking mechanism is in the braking state);

8 is a schematic structural diagram of the wheel assembly part of the stroller of the present invention (Embodiment 2, the braking mechanism is in a braking state);

Accompanying drawing 9 is the structural schematic diagram of the push handle part of the stroller of the present invention (Embodiment 2, the brake mechanism is in the unbraking state);

10 is a schematic structural diagram of the wheel assembly part of the stroller of the present invention (Embodiment 2, the brake mechanism is in a released state);

FIG. 11 is an exploded view of the push handle part of the stroller of the present invention (Example 2).

Among them: 1. Cart frame; 11. Push handle; 111, First gear; 12, Push rod assembly; 121, Push rod; 122, Fixed seat; 13, Rear wheel joint; 21, Front wheel assembly; 22, Rear wheel assembly; 3. Brake lever; 41. Driving part; 411, Second gear; 412, connecting part; 413, chute; 42, flexible connecting part; 51, first elastic part; 52, second elastic part; 61, the first axis; 62, the second axis; 63, the third axis; 7, the guide.

Detailed ways

The technical solutions of the present invention will be further elaborated below with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in FIG. 1 , the stroller of the present invention includes a stroller frame 1 , a wheel assembly disposed at the bottom of the stroller frame 1 , and a braking mechanism for braking the wheel assembly to prevent the stroller from traveling.

The stroller frame 1 includes a push rod assembly 12 and a push handle 11 for human hands to hold when pushing the child stroller. The push handle 11 and the push rod assembly 12 are rotatably connected through a first shaft 61 .

The push rod assembly 12 includes a push rod 121 , and the push rod 121 extends obliquely upward from front to rear to be positioned below the push handle 11 . The push rod 121 includes two first sections that extend obliquely from front to back and upward and a second section that extends in the left-right direction and is connected between the two first sections. The rotational connection between the push handle 11 and the push rod assembly 12 is the first section. A shaft 61 is located on the first section of the push rod 121 . The push handle 11 can be rotated relative to the push rod assembly 12 to move closer to the push rod 121 or away from the push rod 121. Specifically, when the push rod 12 is pushed, the push handle 11 is rotated downward to be close to the push rod 121 and at least cover the push rod. Above the front of 121 , when the push handle 11 is released, the push handle 11 rotates upward and away from the push rod 121 .

The wheel assembly includes a front wheel assembly 21 and a rear wheel assembly 22. In this embodiment, the braking mechanism has a braking state that cooperates with the rear wheel assembly 22 to prevent the rear wheel assembly 22 from traveling and disengages the cooperation with the rear wheel assembly 22. in a disengaged state in which the rear wheel assembly 22 travels.

The brake mechanism includes a brake disc fixedly arranged on the rear wheel assembly 22 and a brake pin movably arranged on the cart frame 1 and capable of engaging or disengaging with the brake disc. When the brake mechanism is in the braking state, the brake pin is matched with the brake disc, and when the brake mechanism is in the unbraking state, the cooperation between the brake pin and the brake disc is disengaged. The frame of the cart includes a rear wheel joint 13 , and the braking mechanism further includes a brake lever 3 rotatably disposed on the rear wheel joint 13 .

The stroller further includes a driving mechanism, and the driving mechanism can make the brake mechanism release the brake from the brake state, or make the brake mechanism brake from the release brake state.

Specifically, as shown in FIGS. 2 to 6 , the driving mechanism includes a driving member 41 rotatably disposed in the push rod assembly 12 through the second shaft 62 . In this embodiment, the push handle 11 cooperates with the driving member 41 to drive The member 41 is simultaneously connected with the brake lever 3 through a flexible connecting member 42, and the flexible connecting member 42 can be a traction cable.

When the push handle 11 is not held by the human hand, the push handle 11 is away from the push rod 121, and the braking mechanism is in the braking state; when the human hand holds the push handle 11 to push the stroller, the push handle 11 rotates in a direction close to the push rod 121 , through the cooperation of the push handle 11 and the driving member 41, the driving member 41 is driven to rotate relative to the push rod assembly 12, thereby pulling the braking mechanism through the flexible connecting member 42, so that the braking mechanism is released from the braking state and is in the unlocking state.

In this embodiment, the push rod assembly 12 further includes a fixed seat 122 fixed on the push rod 121. Specifically, the fixed seat 122 is disposed on the first section of the push rod 121, and the push handle 11 and the push rod assembly 12 are fixed on the The seat 122 is rotatably connected, the fixing seat 122 has a hollow cavity, and the driving member 41 is rotatably disposed in the hollow cavity of the fixing seat 122 through the second shaft 62 .

A first gear 111 is fixed on the push handle 11 , a second gear 411 is fixed on the driving member 41 , and the first gear 111 is engaged with the second gear 411 . When a person holds the push handle 11 to push the stroller, the push handle 11 rotates, and the driving member 41 is driven to rotate relative to the fixed seat 122 through the cooperation of the first gear 111 and the second gear 411 . In this embodiment, the first gear 111 has some gear teeth along the circumferential direction of its rotation, the second gear 411 is provided with gear teeth along the entire circumferential direction of its rotation, and the wheel shaft of the second gear 411 is coaxial with the second shaft 62 set up.

A connecting portion 412 is fixedly disposed on the driving member 41 , one end of the flexible connecting member 42 is fixedly connected to the connecting portion 412 , and the other end of the flexible connecting member 42 is fixedly disposed on the brake lever 3 . On the driving member 41 , the connecting portion 412 and the second shaft 62 are respectively located on opposite sides of the driving member 41 . In this embodiment, the connecting portion 412 is located at the upper portion of the driving member 41 , and the second shaft 62 and the second gear 411 are located at the lower portion of the driving member 41 .

The pitch circle diameter of the first gear 111 is larger than the pitch circle diameter of the second gear 411, and the distance between the second shaft 62 and the connecting portion 412 is at least larger than the pitch circle radius of the first gear 111. In this embodiment, The distance between the second shaft 62 and the connecting portion 412 is greater than the sum of the pitch circle radius of the first gear 11 and the pitch circle radius of the second gear 411 .

In this way, when the push handle 11 is rotated relative to the push rod assembly 12 by a relatively small angle, the driving member 41 can be rotated relative to the push rod assembly 12 by a relatively large angle. When the angle is small, the flexible connecting piece 42 can generate a larger stroke, which makes it easier for the brake mechanism to release the brake.

The driving mechanism also includes a guide structure for guiding the direction of the flexible connecting piece 42 in the push rod assembly 12 , the guide structure includes a guide piece 7 rotatably arranged in the hollow cavity of the fixed seat 122 , and the flexible connecting piece 42 goes around the guide member 7, and the guide member 7 can use a rotating pin or a rotating roller. In this way, during the braking or releasing process, the flexible connecting member 42 and the guide member 7 are in rolling contact, which can reduce the frictional resistance between the flexible connecting member 42 and the guide member 7 and improve the service life of the flexible connecting member 42 at the same time. , which makes the braking and releasing operations of the brake mechanism easier.

The driving mechanism further includes a first elastic member 51 for driving the braking mechanism to switch from the release state to the braking state. Both ends of the first elastic member 51 are respectively disposed on the brake pin and the rear wheel joint 13 . When a person holds the push handle 11 and rotates the push handle 11 relative to the push rod assembly 12, the driving member 41 is driven to rotate relative to the push rod assembly 12, and the brake handle 3 is pulled to rotate through the traction cable, thereby driving the brake pin to move and release the brake mechanism. , during this process, the first elastic member 5 is compressed; when the human hand releases the push handle 11, the elastic force of the first elastic member 5 drives the brake pin to drive the brake handle 3 to rotate in the opposite direction, and the driving member 41 is pulled through the traction cable to push the relative push The rod assembly 12 rotates in the reverse direction, and the push handle 11 is driven to rotate in the reverse direction through the cooperation of the first gear 111 and the second gear 411 to reset.

The driving mechanism further includes a second elastic member 52 for driving the push handle 11 to rotate in the opposite direction and reset. The two ends of the second elastic member 52 are respectively disposed on the push handle 11 and the push rod 121 .

By arranging the first elastic member 51 and the second elastic member 52 at the same time, the braking mechanism can be restored from the releasing state to the braking state more quickly.

In this embodiment, both the first elastic member 51 and the second elastic member 52 are springs.

A side of the push handle 11 facing the push rod 121 has an accommodating groove matching the push rod 121 . When the push handle 11 is held to make the push handle 11 and the push rod 121 close together, the push rod 121 is accommodated in the accommodating groove of the push handle 11; when the push handle 11 is not held, the push rod 121 is released from the accommodating groove.

The stroller works as follows:

When the hand does not hold the push handle 11 of the stroller, the braking mechanism is in the braking state to prevent the stroller from traveling, thereby avoiding the accident of the stroller losing control and improving the safety performance of the stroller. In this state, the brake pin is matched with the brake disc, and the push handle 11 is away from the push rod 121 , as shown in FIG. 2 and FIG. 3 .

When a person holds the push handle 11 to push the stroller, the push handle 11 rotates relative to the push rod assembly 12 in a direction close to the push rod 121 , and the driving member 41 is driven relative to the fixed seat 122 by the cooperation of the first gear 111 and the second gear 411 Rotation, the rotation of the driving member 41 pulls the traction cable to move, the traction cable pulls the brake handle 3 to rotate relative to the cart frame 1, and the brake handle 3 drives the brake pin to move until the cooperation with the brake disc is disengaged, and the brake mechanism is in disengagement. Brake state, as shown in Figure 4 and Figure 5. In the unlocked state, the push rod 121 is accommodated in the accommodating groove of the push handle 11 . During the release process of the braking mechanism, both the first elastic member 51 and the second elastic member 52 are compressed.

When the human hand releases the push handle 11, the push handle 11 rotates upward relative to the push rod assembly 12 under the action of the elastic force of the second elastic member 52, and the push rod 121 gradually comes out of the accommodating groove; during this process, the first elastic Under the action of the elastic force of the brake member 51, the brake pin moves in the direction of matching with the brake disc and drives the brake lever 3 to rotate in the opposite direction relative to the cart frame 1, so that the traction cable pulls the driving member 41 to rotate in the opposite direction, and through the first gear 111 The cooperation with the second gear 411 drives the push handle 11 to rotate in the reverse direction until the brake pin cooperates with the brake disc again, and the push handle 11 rotates in the reverse direction and returns to the initial state.

Example 2

As shown in FIGS. 7 to 11 , in this embodiment, the push handle 11 is movably connected with the driving member 41 . Specifically, the push handle 11 and the driving member 41 are rotatably connected through a third shaft 63, the third shaft 63 is fixedly arranged on the push handle 11, and the third shaft 63 is slidably arranged relative to the driving member 41, or the third shaft 63 It is fixedly arranged on the driving member 41 , and the third shaft 63 is slidably arranged relative to the push handle 11 . The driving member 41 is rotatably connected with the push rod assembly 12 through the second shaft 62 .

In this embodiment, the third shaft 63 is fixedly arranged on the push handle 11 , the driving member 41 is provided with a chute 413 extending in the up-down direction, the third shaft 63 is located in the chute 413 and can follow the length of the chute 413 The extension direction is slidably set.

In this embodiment, on the driving member 41 , the connecting portion 412 for connecting the traction cable and the second shaft 62 are located on opposite sides of the driving member 41 respectively. In this embodiment, the connecting portion 412 is located on the upper part of the driving member 41 , the second shaft 62 is located at the lower part of the driving member 41 .

The connecting portion 412 and the sliding groove 413 are located on opposite sides of the second shaft 62 , and the third shaft 63 is located below the second shaft 62 . The distance between the connecting portion 42 and the second shaft 62 is greater than the distance between the third shaft 63 and the second shaft 62 .

In this way, when the push handle 11 is rotated relative to the push rod assembly 12 by a relatively small angle, the driving member 41 can also be rotated relative to the push rod assembly 12 by a relatively large angle. When the angle is relatively small, the flexible connecting member 42 can generate a larger stroke, which makes the brake release of the brake mechanism easier.

The rest are the same as in Example 1.

When a person holds the push handle 11 and pushes the stroller, the push handle 11 rotates relative to the push rod assembly 12 in a direction close to the push rod 121. When the push handle 11 rotates, the driving member 41 is driven to rotate relative to the fixed seat 122. The traction cable pulls the brake handle 3 to rotate relative to the cart frame 1, and the brake handle 3 drives the brake pin to move until the cooperation with the brake disc is disengaged, and the brake mechanism is in the release state, as shown in Figure 9 and Figure 10. In the unlocked state, the push rod 121 is accommodated in the accommodating groove of the push handle 11 . During the release process of the braking mechanism, both the first elastic member 51 and the second elastic member 52 are compressed.

When the human hand releases the push handle 11, the push handle 11 rotates upward relative to the push rod assembly 12 under the action of the elastic force of the second elastic member 52, and the push rod 121 gradually comes out of the accommodating groove; during this process, the first elastic Under the action of the elastic force of the member 51, the brake pin moves in the direction of matching with the brake disc and drives the brake handle 3 to rotate in the opposite direction relative to the cart frame 1, so that the traction cable pulls the driving member 41 to rotate in the reverse direction, and drives the push handle 11 to reversely rotate. Rotate and reset until the brake pin is matched with the brake disc again, that is, the brake mechanism is in the braking state, and the push handle 11 is reversely rotated and reset to the initial state, as shown in Figure 7 and Figure 8.

The above-mentioned embodiments are only intended to illustrate the technical concept and characteristics of the present invention, and the purpose thereof is to enable those who are familiar with the art to understand the content of the present invention and implement them accordingly, and cannot limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be included within the protection scope of the present invention.

Claims (6)

1. A stroller comprising a stroller frame, a wheel assembly disposed at a bottom of the stroller frame, and a braking mechanism for braking the wheel assembly to prevent the stroller from traveling, the braking mechanism having braking and de-braking states, characterized in that: the stroller frame comprises a push rod assembly and a push handle which is held by a hand when the stroller is pushed, the push handle is rotationally connected with the push rod assembly through a first shaft, the stroller further comprises a driving mechanism which is used for driving the brake mechanism to be switched between a braking state and a braking state, the driving mechanism comprises a driving piece which is rotationally arranged in the push rod assembly through a second shaft, the driving piece is connected with the brake mechanism through a flexible connecting piece, a third shaft is arranged between the push handle and the driving piece, the third shaft is fixedly arranged on the push handle, the third shaft can be arranged relative to the driving piece in a sliding manner, or the third shaft is fixedly arranged on the driving piece, the third shaft can be arranged relative to the push handle in a sliding manner, and a connecting part is arranged on the driving piece, a flexible connectors's an end fixed connection is in on the connecting portion on the driving piece, the secondary shaft with connecting portion are located respectively the relative both sides of driving piece, connecting portion with distance between the secondary shaft is greater than the third shaft with distance between the secondary shaft, when the staff leaves when pushing away the handle, brake mechanism is in the brake state, grips as the staff push away the handle carries out when children's shallow, it is relative to push away the handle push rod subassembly rotates, through push away the handle with the connection of driving piece orders about the driving piece is relative push rod subassembly rotates, through the flexible connectors pulling brake mechanism makes brake mechanism unlocks and is in the state of unpacing.

2. The stroller of claim 1, wherein: the driving mechanism further comprises a guide piece used for guiding the trend of the flexible connecting piece, the guide piece can be rotatably arranged in the push rod assembly, and the flexible connecting piece winds through the guide piece.

3. The stroller of claim 1, wherein: the driving mechanism further comprises a first elastic piece used for driving the brake mechanism to reset from the brake release state to the brake state when the push handle is loosened, and two end parts of the first elastic piece are respectively arranged on the brake mechanism and the cart frame.

4. The stroller of claim 1 or 3, wherein: the driving mechanism further comprises a second elastic piece for driving the push handle to reset when the push handle is released, and two end parts of the second elastic piece are respectively arranged on the push handle and the push rod assembly.

5. The stroller of claim 1, wherein: the push rod assembly comprises a push rod, the push rod comprises two first sections extending from the front to the back in an upward inclined mode and a second section extending along the left-right direction and connected between the two first sections, the rotating connection position of the push handle and the push rod assembly is located on the first sections, when the child stroller is pushed, the push handle rotates downwards to be close to the push rod and at least covers the front upper portion of the push rod, and when the push handle is loosened, the push handle rotates upwards to be far away from the push rod.

6. The stroller of claim 5, wherein: the first section is provided with a fixed seat, the push handle is rotatably connected with the push rod assembly at the fixed seat, and the driving piece can be rotatably arranged in the fixed seat.

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