Wheel connecting structure of stroller

Abstract

The utility model discloses a wheel connecting structure of a child stroller, which comprises a wheel connecting frame and a wheel assembly, the wheel assembly comprises a wheel fork, a pivot on the wheel fork is rotatably connected with the wheel connecting frame, the wheel fork is connected with a wheel, a brake groove is arranged on the wheel along the circumferential direction, and the brake groove is connected with the wheel assembly. The wheel fork is connected with a brake block capable of rotating relative to the wheel fork, the brake block is provided with a clamping pin capable of being clamped with or separated from the brake groove when the brake block rotates, a sliding piece capable of sliding in the pivot is arranged in the pivot, and the wheel connecting frame is provided with an operation assembly which is connected with the upper end of the sliding piece and can drive the sliding piece to slide upwards. The lower end of the sliding piece is connected with a brake block, and a reset spring capable of driving the brake block to reset is arranged between the brake block and the wheel fork. The braking device is simple in structure and smooth in braking.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wheel connecting structure of a child stroller.

BACKGROUND

[0002] The child stroller is a common product in the growth process of infants and young children, and users can put children in the child stroller seat and push them out. In order to facilitate the change of direction of the child stroller during the travel process, the wheels of the child stroller generally adopt a universal structure that can rotate 360 degrees in the horizontal direction. In order to avoid interference between the brake structure of the child stroller and the pivot shaft when braking, the brake structure is generally arranged on the outside of the wheel fork, which has a relatively complex structure and the brake is not smooth.

[0003] In order to solve the foregoing technical problem, Chinese patent CN217146120U discloses a brake mechanism for a child stroller. The brake mechanism pushes the first connecting rod downward, which in turn pushes the second connecting rod. The second inclined hole on the second connecting rod pushes the third connecting rod, causing the third connecting rod to move. When the third connecting rod moves, it pushes the third spring, which in turn pushes the brake block, thereby achieving braking. This brake mechanism can avoid interference with the pivot shaft during braking, and the brake mechanism structure is relatively simple, and the brake is relatively smooth.

[0004] In addition, Chinese patent CN212354113U discloses a brake mechanism for a baby stroller wheel. The mechanism pushes the brake guide rod downward, which directly pushes the brake block. The teeth on the brake block engage with the brake inner gear ring, thereby achieving braking. This brake mechanism can avoid interference with the pivot shaft during braking, and the brake mechanism structure is simple and the brake is relatively smooth.

[0005] As can be seen, the existing child stroller brake structures are quite diverse, and the action principles are not the same. The present utility model provides a new child stroller wheel connecting structure that solves the foregoing technical problems and is different from the foregoing prior art.

UTILITARY MODEL CONTENT

[0006] The utility model aims at overcoming the deficiencies of the prior art, and provides a child stroller wheel connecting structure with a simple structure and smooth braking.

[0007] The utility model is achieved through the following technical solutions:

[0008] A wheel connecting structure of a baby carriage, comprising a wheel connecting frame 1 and a wheel assembly 2, the wheel assembly 2 comprising a wheel fork 21, a pivot 22 on the wheel fork 21 being rotatably connected with the wheel connecting frame 1, and a wheel 23 being connected with the wheel fork 21, characterized in that the wheel 23 is provided with a brake groove 31 in the circumferential direction, the wheel fork 21 is connected with a brake block 32 which can rotate relative to the wheel fork 21, the brake block 32 is provided with a clamping pin 33 which can be clamped with or separated from the brake groove 31 when the brake block 32 rotates, the pivot 22 is provided with a sliding member 4 which can slide in the pivot 22, the wheel connecting frame 1 is provided with an operating assembly 5 which is connected with the upper end of the sliding member 4 and can drive the sliding member 4 to slide upward, the lower end of the sliding member 4 is connected with the brake block 32, and the brake block 32 and the wheel fork 21 are provided with a reset spring 34 which can drive the brake block 32 to reset.

[0009] When the operating assembly 5 drives the sliding member 4 to slide upward, the sliding member 4 pulls the brake block 32 to rotate so that the clamping pin 33 is clamped with the brake groove 31, and when the operating assembly 5 releases the upper end of the sliding member 4, the reset spring 34 drives the brake block 32 to rotate so that the clamping pin 33 is separated from the brake groove 31.

[0010] The sliding member 4 comprises a sliding shaft 41 which is arranged in the pivot 22, and a pull rope which is connected between the sliding shaft 41 and the brake block 32, and the upper end of the sliding shaft 41 is connected with the operating assembly 5, and when the sliding shaft 41 slides upward, the sliding shaft 41 pulls the brake block 32 to rotate through the pull rope; or the sliding member 4 is a pull rope which is arranged in the pivot 22, the upper end of the pull rope is connected with the operating assembly 5 and the lower end of the pull rope is connected with the brake block 32, and when the pull rope slides upward, the pull rope pulls the brake block 32 to rotate.

[0011] The sliding member 4 comprises a sliding shaft 41 which is arranged in the pivot 22, the wheel fork 21 is provided with a sliding sheet 6 which can slide relative to the wheel fork 21, the lower end of the sliding sheet 6 is hingedly connected with the brake block 32, the upper end of the sliding sheet 6 is movably connected with the lower end of the sliding shaft 41, and the upper end of the sliding shaft 41 is connected with the operating assembly 5, and when the sliding shaft 41 slides upward, the sliding shaft 41 pulls the brake block 32 to rotate through the sliding sheet 6.

[0012] The lower end of the sliding shaft 41 is provided with a fixing seat 42, the fixing seat 42 is provided with a protruding shaft 43 which extends outward, the sliding sheet 6 is provided with an arc-shaped hole 6a, and the protruding shaft 43 penetrates into the arc-shaped hole 6a.

[0013] The lower end of the sliding shaft 41 is provided with a fixing seat 42, the fixing seat 42 is provided with a protruding shaft 43 which extends outward, and the upper end of the sliding sheet 6 is hingedly connected with the protruding shaft 43.

[0014] The sliding shaft 41 is provided with a connecting block 44 at the upper end, the operating assembly 5 comprises a moving block 51 which is arranged in the wheel connecting frame 1 and can move transversely, the moving block 51 is provided with an inclined surface 52 which can push the connecting block 44 when the moving block 51 moves, and the operating assembly 5 further comprises a pedal 53 which is arranged on the wheel connecting frame 1 and is connected with the moving block 51 so as to drive the moving block 51 to move.

[0015] The wheel assembly 2 is detachably connected with the wheel connecting frame 1, the moving block 51 comprises a body 511, the body 511 is provided with a through slot 512 which can allow the connecting block 44 to pass up and down, the body 511 is provided with an open slot 513 which is communicated with the through slot 512 and can allow the pivot shaft 22 or the sliding shaft 41 to move in the body 511, and the open slot 513 is formed with the inclined surface 52 which can push the lower side wall of the connecting block 44 upward when the moving block 51 moves.

[0016] The fork 21 comprises a fork base 211 and a fork frame 212 which is rotatably connected with the fork base 211, the fork base 211 and the fork frame 212 are provided with a buffer spring 213, the pivot shaft 22 is fixedly connected with the fork base 211, the brake block 32 is rotatably connected with the fork frame 212, the sliding piece 6 is arranged in the fork frame 212, the reset spring 34 is arranged between the brake block 32 and the fork frame 212, and the fork frame 212 is further provided with a guide hole 214 which can allow the protruding shaft 43 to move up and down in the fork frame 212.

[0017] The fixed seat 42 and the pivot shaft 22 or the fork 21 are provided with an elastic element 8 which can push the sliding shaft 41 to reset downward when the operating assembly 5 releases the sliding shaft 41.

[0018] Compared with the prior art, the utility model has the advantages of:

[0019] 1. When braking, the operating assembly drives the sliding piece to move, the sliding piece pulls the brake block connected therewith to rotate relative to the fork, the catch on the brake block is clamped into the brake slot in the rotating process, so that the braking is completed.

[0020] 2. When braking, the operating assembly drives the sliding shaft to move upward, the sliding shaft pulls the brake block to rotate through the sliding piece, so that the braking is completed.

[0021] 3. The utility model discloses avoid the interference situation in the process of braking, also make whole structure simple and compact, can realize smooth braking at any time and anywhere, be suitable for popularization and application. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the perspective view of the utility model;

[0023] Figure 2 is one of the exploded view of the utility model;

[0024] Figure 3 is the side view of the utility model;

[0025] Figure 4 is one of the perspective view of the component of the utility model;

[0026] Figure 5 is one of the exploded view of the component of the utility model;

[0027] Figure 6 is the second exploded view of the component of the utility model;

[0028] Figure 7 is Figure 3 the enlarged view of A in the middle;

[0029] Figure 8 is one of the perspective view of the component of the utility model;

[0030] Figure 9 is the second perspective view of the component of the utility model;

[0031] Figure 10 is the third perspective view of the component of the utility model. DETAILED DESCRIPTION

[0032] The utility model will be further described below in conjunction with the drawings:

[0033] Example 1:

[0034] As Figures 1 to 6 shown, a kind of wheel connecting structure of child stroller, including wheel connecting frame 1, wheel connecting frame 1 is connected with the frame of child stroller, and is used to connect wheel assembly 2.The wheel assembly 2 described includes wheel fork 21, the wheel fork 21 is connected with wheel 23, the pivot 22 on the wheel fork 21 is rotatably connected with wheel connecting frame 1, wheel fork 21 is realized 360 degree rotation in horizontal plane direction by pivot 22 with wheel connecting frame 1, becomes the wheel that can be universal rotation.

[0035] As Figure 1 and Figure 4As shown, the wheel 23 is provided with a brake groove 31 along the circumferential direction, the wheel fork 21 is connected with a brake block 32 which can rotate relative to the wheel fork 21, the brake block 32 is provided with a clamping pin 33 which can be clamped with or separated from the brake groove 31 when the brake block 32 rotates, when the clamping pin 33 is clamped with the brake groove 31, the child stroller is in the brake state, at this time, the child stroller is in the stop state, when the clamping pin 33 is separated from the brake groove 31, the child stroller is in the unbraked state, at this time, the child stroller is in the state that can be pushed.

[0036] As shown, Figures 1 to 6 The pivot 22 is provided with a sliding piece 4 which can slide in the pivot 22, the wheel connecting frame 1 is provided with an operating assembly 5 which is connected with the upper end of the sliding piece 4 and can drive the sliding piece 4 to slide upward, the lower end of the sliding piece 4 is connected with the brake block 32, the brake block 32 and the wheel fork 21 are provided with a reset spring 34, when the operating assembly 5 drives the sliding piece 4 to slide upward, the sliding piece 4 pulls the brake block 32 to rotate so that the clamping pin 33 is clamped with the brake groove 31, when the operating assembly 5 releases the upper end of the sliding piece 4, the reset spring 34 drives the brake block 32 to rotate so that the clamping pin 33 is separated from the brake groove 31, the brake is realized by pulling the brake block 32 to rotate through the sliding piece 4, the whole structure is simple and compact, and the brake is smooth, and there is no interference or jam. In the embodiment, the reset spring 34 is a tension spring. Of course, according to the different setting positions, a compression spring can also be used.

[0037] As shown, Figures 2 to 6 In the embodiment, the sliding piece 4 includes a sliding shaft 41 which is arranged in the pivot 22, the wheel fork 21 is provided with a sliding sheet 6 which can slide relative to the wheel fork 21, the lower end of the sliding sheet 6 is hinged with the brake block 32, the upper end of the sliding sheet 6 is movably connected with the lower end of the sliding shaft 41, the upper end of the sliding shaft 41 is connected with the operating assembly 5, when the sliding shaft 41 slides upward, the sliding shaft 41 pulls the brake block 32 to rotate through the sliding sheet 6. The operating assembly 5 drives the sliding shaft 41 to move upward, the sliding shaft 41 pulls the brake block 32 to rotate through the sliding sheet 6, so that the vertical movement of the sliding shaft 41 is converted into the rotary movement of the brake block 32, the design is ingenious, and the structure is simple, and the brake is smooth.

[0038] As shown, Figures 2 to 6As shown, the lower end of the sliding shaft 41 is provided with a fixing base 42, the fixing base 42 is provided with a protruding shaft 43 extending outward, the sliding piece 6 is provided with an arc-shaped hole 6a, and the protruding shaft 43 penetrates into the arc-shaped hole 6a. When the sliding shaft 41 moves upward, the sliding shaft 41 drives the fixing base 42 to move upward, the fixing base 42 drives the protruding shaft 43 to move upward, and the protruding shaft 43 pulls the hole wall of the arc-shaped hole 6a, so that the sliding piece 6 moves, the sliding piece 6 pulls the brake block 32 hinged thereto to rotate relative to the fork 21, so that the locking pin 33 rotates into the brake groove 31, thereby realizing braking. When the sliding shaft 41 moves up and down, the sliding shaft 41 can slide relative to the sliding piece 6 in the arc-shaped hole 6a, and a certain buffer can be formed, so that the braking process is stable and reliable. Of course, the protruding shaft 43 can also be directly hinged to the upper end of the sliding piece 6.

[0039] As shown in Figures 2 to 10 The upper end of the sliding shaft 41 is provided with a connecting block 44, the operating assembly 5 includes a moving block 51 arranged in the wheel connecting frame 1 and capable of moving transversely, the moving block 51 is provided with an inclined surface 52 capable of pushing the connecting block 44 upward during movement, and the operating assembly 5 further includes a pedal 53 arranged on the wheel connecting frame 1 and connected with the moving block 51 to drive the moving block 51 to move. When the pedal 53 is stepped on, the moving block 51 moves transversely, and the inclined surface 52 on the moving block 51 pushes the lower side wall of the connecting block 44, so that the connecting block 44 drives the sliding shaft 41 to move upward, thereby completing the braking operation. Only by stepping on and off the pedal 53 with the feet can the braking or unbraking be completed, which is very convenient and fast.

[0040] As shown in Figures 2 to 6As shown, the wheel assembly 2 is detachably connected with the wheel connecting frame 1, the moving block 51 comprises a body 511, the body 511 is provided with a through slot 512 through which the pivot 22 and the connecting block 44 can pass up and down, the body 511 is provided with an open slot 513 which is communicated with the through slot 512 and through which the pivot 22 or the sliding shaft 41 can move, and the open slot 513 is formed with an inclined surface 52 on both sides which can push the lower side wall of the connecting block 44 upward when the moving block 51 moves. The wheel assembly 2 is detachably connected with the wheel connecting frame 1, which can facilitate the replacement of the wheel assembly 2 in the case of wheel damage, when the wheel assembly 2 needs to be detached, only need to unlock the wheel assembly 2 and the wheel connecting frame 1 and pull down the wheel assembly 2, when pulling down, the connecting block 44 exits downward through the through slot 512, the locking mechanism between the wheel assembly 2 and the wheel connecting frame 1 can adopt a traditional locking mechanism, for example, the locking mechanism disclosed in Chinese patent CN217146120U. When the wheel assembly 2 is connected to the wheel connecting frame 1 and needs to brake, step on the pedal 53, the moving block 51 moves transversely, the open slot 513 moves relative to the pivot 22 or the sliding shaft 41, in this process, the inclined surface 52 gradually pushes the lower side wall of the connecting block 44, thereby pushing the connecting block 44 upward, the connecting block 44 drives the sliding shaft 41 to move upward, thereby realizing the rotation of the brake block 32 to brake.

[0041] As shown in Figures 7 to 9 , the connecting block 44 is connected with the upper end of the sliding shaft 41 through threads, and the upper end of the connecting block 44 is provided with a connecting port 45 which can be connected with an inserted screwdriver or hex wrench.

[0042] As shown in Figure 2 and Figures 4 to 6 , the wheel fork 21 comprises a fork seat 211 and a fork frame 212 rotatably connected with the fork seat 211, and a buffer spring 213 is arranged between the fork seat 211 and the fork frame 212, which can play a buffering role when the stroller passes through uneven ground, so that the child can ride comfortably.

[0043] As shown in Figure 6 , the pivot 22 is fixedly connected to the fork seat 211, the brake block 32 is rotatably connected to the fork frame 212, the sliding sheet 6 is arranged in the fork frame 212, and the return spring 34 is arranged between the brake block 32 and the fork frame 212. The fork frame 212 is further provided with a guide hole 214 for the protruding shaft 43 to move up and down in the hole.

[0044] As shown in Figure 2 and Figure 6As shown, the fixed seat 42 and the pivot 22 or the wheel fork 21 are provided with an elastic element 8 which can push the sliding shaft 41 to reset downward when the operating assembly 5 is loosened. The elastic element 8 acts together with the reset spring 34, so that the sliding shaft 41 and the brake block 32 can be more easily reset and the action is more flexible. When the elastic element 8 is arranged between the fixed seat 42 and the pivot 22 or the fork seat 211, the elastic element 8 is a compression spring. When the elastic element 8 is arranged between the fixed seat 42 and the fork frame 212, the elastic element 9 is a tension spring.

[0045] Embodiment 2:

[0046] The difference between Embodiment 2 and Embodiment 1 is that the sliding piece 4 includes a sliding shaft 41 arranged in the pivot 22, a pull rope (not shown in the figure) is arranged between the sliding shaft 41 and the brake block 32, the upper end of the sliding shaft 41 is connected with the operating assembly 5, and the sliding shaft 41 pulls the brake block 32 to rotate through the pull rope when the sliding shaft 41 slides upward. In this embodiment, the brake block 32 is directly pulled to rotate through the pull rope when the sliding shaft 41 moves upward, and the catch pin 33 is clamped in the brake groove 31 in the rotating process, so that the brake is realized.

[0047] Embodiment 3:

[0048] The difference between Embodiment 2 and Embodiment 1 is that the sliding piece 4 is a pull rope arranged in the pivot 22, the upper end of the pull rope is connected with the operating assembly 5 and the lower end is connected with the brake block 32, and the pull rope pulls the brake block 32 to rotate when the pull rope slides upward. In this embodiment, the operating assembly 5 pulls the pull rope, and the pull rope pulls the brake block 32 to rotate, and the catch pin 33 is clamped in the brake groove 31 in the rotating process, so that the brake is realized.

[0049] The above describes the embodiments in combination with the drawings, but the utility model is not limited to the above embodiments, and various changes can be made within the knowledge range of ordinary skilled persons in the technical field without departing from the purpose.

Claims

1. A wheel connection structure for a stroller, comprising a wheel connecting frame (1) and a wheel assembly (2), wherein the wheel assembly (2) includes a wheel fork (21), a pivot (22) on the wheel fork (21) is rotatably connected to the wheel connecting frame (1), and a wheel (23) is connected to the wheel fork (21), characterized in that: The wheel (23) is provided with a brake groove (31) along the circumferential direction. The wheel fork (21) is connected to a brake block (32) that can rotate relative to it. The brake block (32) is provided with a locking pin (33) that can engage or disengage with the brake groove (31) when it rotates. The pivot (22) is provided with a sliding member (4) that can slide inside it. The wheel connecting frame (1) is provided with an operating component (5) that is connected to the upper end of the sliding member (4) and can drive the sliding member (4) to slide upward. The lower end of the sliding member (4) is connected to the brake block (32). A return spring (34) that can drive the brake block (32) to return to its original position is provided between the brake block (32) and the wheel fork (21).

2. The wheel connection structure of the stroller according to claim 1, characterized in that: When the operating component (5) drives the sliding member (4) to slide upward, the sliding member (4) pulls the brake block (32) to rotate so that the locking pin (33) engages with the brake groove (31). When the operating component (5) releases the upper end of the sliding member (4), the reset spring (34) resets and drives the brake block (32) to rotate so that the locking pin (33) disengages from the brake groove (31).

3. The wheel connection structure of the stroller according to claim 1 or 2, characterized in that: The sliding member (4) includes a sliding shaft (41) disposed in the pivot (22). A pull rope is provided between the sliding shaft (41) and the brake block (32). The upper end of the sliding shaft (41) is connected to the operating component (5). When the sliding shaft (41) slides upward, the sliding shaft (41) pulls the brake block (32) to rotate through the pull rope. Alternatively, the sliding member (4) is a pull rope that passes through the pivot (22). The upper end of the pull rope is connected to the operating component (5) and the lower end is connected to the brake block (32). When the pull rope slides upward, the pull rope pulls the brake block (32) to rotate.

4. The wheel connection structure of the stroller according to claim 1 or 2, characterized in that: The sliding member (4) includes a sliding shaft (41) disposed in the pivot (22), and a sliding piece (6) that can slide relative to the wheel fork (21). The lower end of the sliding piece (6) is hinged to the brake block (32), and the upper end of the sliding piece (6) is movably connected to the lower end of the sliding shaft (41). The upper end of the sliding shaft (41) is connected to the operating component (5). When the sliding shaft (41) slides upward, the sliding shaft (41) pulls the brake block (32) to rotate through the sliding piece (6).

5. The wheel connection structure of the stroller according to claim 4, characterized in that: The lower end of the sliding shaft (41) is provided with a fixed seat (42), the fixed seat (42) is provided with a protruding shaft (43) extending outward, the sliding plate (6) is provided with an arc-shaped hole (6a), and the protruding shaft (43) passes through the arc-shaped hole (6a).

6. The wheel connection structure of the stroller according to claim 4, characterized in that: The lower end of the sliding shaft (41) is provided with a fixed seat (42), and the fixed seat (42) is provided with a protruding shaft (43) extending outward therefrom, and the protruding shaft (43) is hinged to the upper end of the sliding piece (6).

7. The wheel connection structure of the stroller according to claim 4, characterized in that: The upper end of the sliding shaft (41) is provided with a connecting block (44). The operating component (5) includes a moving block (51) that is located in the wheel connecting frame (1) and can move laterally. The moving block (51) is provided with an inclined surface (52) that can push the connecting block (44) when it moves. The operating component (5) also includes a pedal (53) that is located on the wheel connecting frame (1) and connected to the moving block (51) to drive the moving block (51) to move.

8. The wheel connection structure of the stroller according to claim 7, characterized in that: The wheel assembly (2) is detachably connected to the wheel connecting frame (1). The moving block (51) includes a body (511). The body (511) is provided with a through groove (512) that allows the connecting block (44) to pass through vertically. The body (511) is provided with an opening groove (513) that communicates with the through groove (512) and allows the pivot (22) or sliding shaft (41) to move within it. The opening groove (513) has inclined surfaces (52) on both sides that can push the lower side wall of the connecting block (44) upward when the moving block (51) moves.

9. The wheel connection structure of the stroller according to claim 4, characterized in that: The wheel fork (21) includes a fork seat (211) and a fork carriage (212) rotatably connected to the fork seat (211). A buffer spring (213) is provided between the fork seat (211) and the fork carriage (212). The pivot (22) is fixedly connected to the fork seat (211). The brake block (32) is rotatably connected to the fork carriage (212). The sliding plate (6) is provided inside the fork carriage (212). The return spring (34) is provided between the brake block (32) and the fork carriage (212). The fork carriage (212) is also provided with a guide hole (214) for the protruding shaft (43) to move up and down inside.

10. The wheel connection structure of the stroller according to claim 5, characterized in that: The fixed base (42) is provided with an elastic element (8) between the pivot (22) or the wheel fork (21) so that the sliding shaft (41) can be pushed to return downward when the operating component (5) releases the sliding shaft (41).

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