A brake mechanism for a child's pushchair

Abstract

The utility model discloses a kind of children's pushchair brake mechanisms, including wheel seat, the wheel seat is fixed with the connecting shaft for being connected to the connecting axle on the child pushchair frame, the wheel seat lower end is connected with wheel fork, the wheel fork is connected with wheel, the wheel is equipped with a plurality of brake grooves in circumferential direction, the wheel fork is rotatably connected with rotating block, the rotating block is movably connected with brake block when its relative wheel fork rotates, and it can be engaged or separated with brake groove, the wheel fork is equipped with transmission part, and transmission part can be moved relative to it to drive rotating block relative to wheel fork rotation, the rotating block and wheel fork between still be equipped with first reset spring, and the sliding shaft can be slid relative to it in the connecting axle, and the sliding shaft lower end is indirectly connected with transmission part at least to drive transmission part to move. The utility model structure is simple, and brake is stable and smooth.

Description

[Technical Field]

[0001] This utility model relates to a braking mechanism for a children's stroller. [Background Technology]

[0002] Strollers are a common product during infant and toddler development, allowing users to place their children in the stroller seat and push them around. To facilitate changing direction while the stroller is in motion, existing strollers typically use omnidirectional wheels that can rotate 360 ​​degrees horizontally. To prevent the braking mechanism from interfering with the wheel pivot during braking, the braking mechanism is usually located on the outside of the wheel fork, resulting in a complex structure that can easily cause the brakes to stick or become uneven.

[0003] Therefore, this utility model was created based on the above-mentioned shortcomings. [Utility Model Content]

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a simple, stable and smooth braking mechanism for children's strollers.

[0005] This utility model is achieved through the following technical solution:

[0006] A stroller braking mechanism includes a wheel seat, a connecting shaft fixedly mounted on the wheel seat for connecting to the stroller frame, a wheel fork connected to the lower end of the wheel seat, a wheel connected to the wheel fork, a plurality of brake grooves along the circumference of the wheel, a rotating block rotatably connected to the wheel fork, a brake block movably connected to the rotating block that can engage or disengage with the brake grooves when rotating relative to the wheel fork, a transmission component on the wheel fork that can move relative to it and drive the rotating block to rotate relative to the wheel fork, a first return spring between the rotating block and the wheel fork that can push the rotating block to rotate and reset, a sliding shaft inside the connecting shaft that can slide relative to it, and the lower end of the sliding shaft being at least indirectly connected to the transmission component and able to drive the transmission component to move.

[0007] The wheel seat is provided with a movable seat that can be pushed downward by the sliding axis. The movable seat is provided with a pushing part that can push the transmission component to move when it slides downward. A second return spring that can push the movable seat to return to its original position is also provided between the movable seat and the upper end of the wheel fork.

[0008] The pusher is a pusher rod that is mounted on the movable seat and extends laterally. The wheel fork is provided with a guide hole through which the pusher rod passes. The pusher rod abuts against the transmission component and can push the transmission component to move relative to the wheel fork.

[0009] The transmission component includes a transmission plate with an abutting surface at its upper end. The abutting surface abuts against a push rod, causing the movable seat to move downwards and push the transmission plate relative to the wheel fork via the push rod. A push spring is provided between the transmission plate and the rotating block. When the transmission plate is pushed by the push rod and moves relative to the wheel fork, the push spring is pushed by the transmission plate, causing the rotating block to rotate relative to the wheel fork.

[0010] The angle between the moving direction of the push rod and the moving direction of the transmission plate is an acute angle.

[0011] The brake block includes a lateral brake shaft that can engage or disengage from the brake groove. The outer end of the brake shaft is provided with a connecting block extending to one side, and the upper end of the connecting block is rotatably connected to the rotating block.

[0012] The wheel fork is provided with a strip-shaped hole along its length for the brake shaft to pass through, and which can control the movement trajectory of the brake shaft when the rotating block rotates relative to the wheel fork.

[0013] The rotating block is provided with an arc-shaped hole, and the wheel fork is provided with a guide post that passes through the arc-shaped hole to guide the rotational movement of the rotating block.

[0014] The wheel fork is provided with multiple protruding posts, and the transmission plate is provided with mating holes that cooperate and guide the corresponding protruding posts.

[0015] The wheel seat and the wheel fork are rotatably connected, and a shock-absorbing spring is provided between the wheel seat and the wheel fork.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. When the braking mechanism of this stroller is in operation, the sliding shaft is driven by an external force to slide, which in turn drives the transmission component to move relative to the wheel fork. The transmission component then drives the rotating block to rotate relative to the wheel fork. During the rotation of the rotating block, the brake block moves, causing it to engage with the brake groove on the wheel, thus braking the wheel. When it is necessary to release the brake, the external force applied to the sliding shaft is removed, and the first return spring pushes the rotating block to rotate and return to its original position. The rotating block, along with the brake block, disengages from the brake groove, at which point both the transmission component and the sliding shaft are reset. The entire stroller braking mechanism has a simple structure; braking can be achieved simply by driving the sliding shaft to slide. The operation is very convenient and quick, and the braking is smooth without any jamming.

[0018] 2. The brake block of this utility model includes a brake shaft that passes through a strip hole on the wheel fork. When the rotating block rotates relative to the wheel fork, the strip hole and the brake shaft slide relative to each other to control the movement trajectory of the brake shaft, thereby realizing the stable engagement or disengagement of the brake shaft with the brake groove, and realizing smooth braking or release of the brake.

[0019] 3. The transmission component of this utility model includes a transmission plate and a push spring. When the sliding shaft pushes the movable seat downwards, the push rod on the movable seat pushes the abutment surface at the upper end of the transmission plate, allowing the transmission plate to slide along the length of the wheel fork. This converts the vertical movement of the sliding shaft into the oblique movement of the transmission plate. As the transmission plate slides along the wheel fork, it pushes the push spring, which in turn pushes the rotating block to rotate, thus achieving braking. The push spring's action of rotating the block relative to the wheel fork provides a buffering effect, preventing wear caused by rigid contact between the brake shaft and adjacent brake grooves. Furthermore, the push spring ensures that even when the brake shaft moves and presses against the area between adjacent brake grooves, it can still guide the brake shaft into the brake groove during slight wheel movement, thus providing a guiding function. [Attached Image Description]

[0020] Figure 1 This is a perspective view of the utility model;

[0021] Figure 2 This is an exploded view of the present invention;

[0022] Figure 3 yes Figure 2 A magnified view at point C;

[0023] Figure 4 This is a side view of the present invention when it is not braking;

[0024] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0025] Figure 6 This is a side view of the present invention when it is in the braking position;

[0026] Figure 7 yes Figure 6 Enlarged view at point B;

[0027] Figure 8 This is one of the perspective views of the components of this utility model;

[0028] Figure 9 This is the second perspective view of a component of this utility model.

Detailed Implementation Methods

[0029] The present invention will be further described below with reference to the accompanying drawings:

[0030] like Figure 1As shown, a stroller braking mechanism includes a wheel seat 1, on which a connecting shaft 2 for pivotal connection to the stroller frame is fixed. A wheel fork 3 is connected to the lower end of the wheel seat 1, and a wheel 4 is connected to the wheel fork 3. The wheel fork 3 can be pivotally connected to the stroller frame via the connecting shaft 2 on the wheel seat 1, so that the wheel 4 can rotate 360 ​​degrees in the horizontal direction, becoming a swivel wheel that can flexibly change direction.

[0031] like Figures 1 to 7 As shown, the wheel 4 has multiple brake grooves 5 along its circumference. A rotating block 6 is rotatably connected to the wheel fork 3. A brake block 7 is movably connected to the rotating block 6, which can engage or disengage with the brake grooves 5 when rotating relative to the wheel fork 3. The wheel fork 3 has a transmission member 8 that can move relative to it and drive the rotating block 6 to rotate relative to the wheel fork 3. A first return spring 9 is also provided between the rotating block 6 and the wheel fork 3 to push the rotating block 6 to rotate and reset. The connecting shaft 2 has a sliding shaft 10 that can slide relative to it. The lower end of the sliding shaft 10 is at least indirectly connected to the transmission member 8 and can drive the transmission member 8 to move. When the stroller's braking mechanism is working, the sliding shaft 10 is driven to slide by an external force. The sliding shaft 10 then drives the transmission member 8 to move relative to the wheel fork 3. The transmission member 8 then drives the rotating block 6 to rotate relative to the wheel fork 3. During the rotation, the rotating block 6 drives the brake block 7 to move, causing the brake block 7 to engage with the brake grooves 5 on the wheel 4, thus achieving wheel braking. When the brake needs to be released, the external force applied to the sliding shaft 10 is removed, and the first return spring 9 pushes the rotating block 6 to rotate and reset. The rotating block 6, along with the brake block 7, disengages from the brake groove 5. At this time, both the transmission component 8 and the sliding shaft 10 are reset. The entire stroller braking mechanism has a simple structure. Braking can be achieved simply by driving the sliding shaft 10 to slide. The operation is very convenient and quick, and the braking is smooth without any jamming.

[0032] like Figure 3 , Figure 8 and Figure 9 As shown, the brake block 7 includes a lateral brake shaft 71 that can engage or disengage from the brake groove 5. The outer end of the brake shaft 71 has a connecting block 72 extending to one side. The upper end of the connecting block 72 is rotatably connected to the rotating block 6. The wheel fork 3 has a strip-shaped hole 31 along its length for the brake shaft 71 to pass through, which controls the movement trajectory of the brake shaft 71 when the rotating block 6 rotates relative to the wheel fork 3. The brake shaft 71 passes laterally through the strip-shaped hole 31 on the wheel fork 3. When the rotating block 6 rotates relative to the wheel fork 3, the wall of the strip-shaped hole 31 and the brake shaft 71 will slide relative to each other. The wall of the strip-shaped hole 31 can control the movement trajectory of the brake shaft 71, thereby achieving stable engagement or disengagement of the brake shaft 71 with the brake groove 5, and realizing smooth and stable braking or release of the brake.

[0033] like Figures 2 to 7As shown, the wheel seat 1 is equipped with a movable seat 11 that can be pushed downward by the sliding shaft 10. The movable seat 11 is equipped with a pushing part 12 that can push the transmission component 8 when it slides downward. A second return spring 13 is also provided between the movable seat 11 and the upper end of the wheel fork 3 to push the movable seat 11 back to its original position. When the sliding shaft 10 is driven by an external force, it pushes the movable seat 11 downward. The pushing part 12 on the movable seat 11 pushes the transmission component 8, which in turn pushes the rotating block 6 to rotate. The rotating block 6 then moves the brake block 7, thereby achieving braking. The entire braking process involves the coordinated operation of multiple components, requiring only the driving of the sliding shaft 10, making the braking operation very convenient.

[0034] like Figure 5 and Figure 7 As shown, the push part 12 is a push rod that is provided on the movable seat 11 and extends laterally. The wheel fork 3 is provided with a guide hole 14 for the push rod to pass through. When the movable seat 11 is pushed and moved by the sliding shaft 10, the guide hole 14 can guide the push block on the movable seat 11 so that the push rod abuts against the transmission member 8 and can smoothly push the transmission member 8 to move relative to the wheel fork 3.

[0035] like Figures 4 to 7 As shown, the transmission component 8 includes a transmission plate 81. The upper end of the transmission plate 81 has a contact surface 82. The contact surface 82 abuts against the push rod, causing the movable seat 11 to move downward. The push rod pushes the transmission plate 81 to move relative to the wheel fork 3. A push spring 83 is provided between the transmission plate 81 and the rotating block 6. When the transmission plate 81 is pushed by the push rod and moves relative to the wheel fork 3, the push spring 83 is pushed by the transmission plate 81, causing the rotating block 6 to rotate relative to the wheel fork 3. The angle R between the moving direction of the push rod and the moving direction of the transmission plate 81 is an acute angle. When the sliding shaft 10 pushes the movable seat 11 downwards, the push rod on the movable seat 11 pushes the abutment surface 82 at the upper end of the transmission plate 81, allowing the transmission plate 81 to slide along the length of the wheel fork 3. This converts the vertical movement of the sliding shaft 10 into the oblique movement of the transmission plate 81. As the transmission plate 81 slides along the wheel fork 3, it pushes the push spring 83, which in turn pushes the rotating block 6 to rotate, thus achieving braking. The push spring 83 pushes the rotating block 6 to rotate relative to the wheel fork 3, which can act as a buffer to avoid wear caused by rigid contact between the brake shaft 71 and the two adjacent brake grooves 5. At the same time, the push spring 83 also ensures that even if the brake shaft 71 presses against the area between adjacent brake grooves when it moves, it can still enter the brake groove 5 when the wheel 4 moves slightly, thus guiding it into position.

[0036] like Figure 2 , Figure 6 and Figure 9As shown, the rotating block 6 is provided with an arc-shaped hole 61, and the wheel fork 3 is provided with a guide post 32. The guide post 32 passes through the arc-shaped hole 61 and can guide the rotational movement of the rotating block 6, so that the braking is smooth and stable.

[0037] like Figure 2 , Figure 5 and Figure 7 The wheel fork 3 is provided with a plurality of protruding posts 33, and the transmission plate 81 is provided with mating holes 84 that cooperate with and guide the corresponding protruding posts 33, so that when the transmission plate 81 is pushed by the vertically moving push rod, it can move smoothly along the length direction of the wheel fork 3, thereby achieving smooth braking.

[0038] like Figure 1 and Figure 2 As shown, the wheel seat 1 and the wheel fork 3 are rotatably connected. A shock-absorbing spring 16 is also provided between the wheel seat 1 and the wheel fork 3. When the wheel 4 passes over uneven road surfaces, the shock-absorbing spring 16 can play a shock-absorbing role, making the child in the stroller comfortable.

[0039] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the invention.

Claims

1. A braking mechanism for a child stroller, characterized in that: The stroller includes a wheel seat (1), on which a connecting shaft (2) for connecting to a stroller frame is fixedly provided. A wheel fork (3) is connected to the lower end of the wheel seat (1). A wheel (4) is connected to the wheel fork (3). A plurality of brake grooves (5) are provided on the wheel (4) along the circumferential direction. A rotating block (6) is rotatably connected to the wheel fork (3). A brake block (7) is movably connected to the rotating block (6) so as to engage or disengage with the brake grooves (5) when it rotates relative to the wheel fork (3). A transmission component (8) is provided on the wheel fork (3) so as to drive the rotating block (6) to rotate relative to the wheel fork (3). A first return spring (9) is provided between the rotating block (6) and the wheel fork (3) so as to push the rotating block (6) to rotate and reset. A sliding shaft (10) is provided in the connecting shaft (2) so as to slide relative to it. The lower end of the sliding shaft (10) is at least indirectly connected to the transmission component (8) so as to drive the transmission component (8) to move.

2. The stroller braking mechanism according to claim 1, characterized in that: The wheel seat (1) is provided with a movable seat (11) that can be pushed downward by the sliding shaft (10). The movable seat (11) is provided with a pushing part (12) that can push the transmission member (8) to move when it slides downward. A second return spring (13) that can push the movable seat (11) to return to its original position is also provided between the movable seat (11) and the upper end of the wheel fork (3).

3. The stroller braking mechanism according to claim 2, characterized in that: The push part (12) is a push rod that is provided on the movable seat (11) and extends laterally. The wheel fork (3) is provided with a guide hole (14) through which the push rod passes. The push rod abuts against the transmission member (8) and can push the transmission member (8) to move relative to the wheel fork (3).

4. The stroller braking mechanism according to claim 3, characterized in that: The transmission component (8) includes a transmission plate (81), the upper end of which has an abutment surface (82). The abutment surface (82) abuts against the push rod, causing the movable seat (11) to move downwards and push the transmission plate (81) relative to the wheel fork (3) through the push rod. A push spring (83) is provided between the transmission plate (81) and the rotating block (6). When the transmission plate (81) is pushed by the push rod and moves relative to the wheel fork (3), the push spring (83) is pushed by the transmission plate (81), causing the rotating block (6) to rotate relative to the wheel fork (3).

5. The stroller braking mechanism according to claim 3, characterized in that: The angle (R) between the moving direction of the push rod and the moving direction of the transmission plate (81) is an acute angle.

6. The stroller braking mechanism according to claim 1, characterized in that: The brake block (7) includes a transverse brake shaft (71) that can engage or disengage from the brake groove (5). The outer end of the brake shaft (71) is provided with a connecting block (72) extending to one side. The upper end of the connecting block (72) is rotatably connected to the rotating block (6).

7. The stroller braking mechanism according to claim 6, characterized in that: The wheel fork (3) is provided with a strip hole (31) along its length for the brake shaft (71) to pass through and to control the movement trajectory of the brake shaft (71) when the rotating block (6) rotates relative to the wheel fork (3).

8. The stroller braking mechanism according to claim 1, characterized in that: The rotating block (6) is provided with an arc-shaped hole (61), and the wheel fork (3) is provided with a guide post (32) that passes through the arc-shaped hole (61) to guide the rotational movement of the rotating block (6).

9. The stroller braking mechanism according to claim 4, characterized in that: The wheel fork (3) is provided with a plurality of protruding posts (33), and the transmission plate (81) is provided with mating holes (84) that cooperate and guide the corresponding protruding posts (33).

10. The stroller braking mechanism according to claim 1, characterized in that: The wheel seat (1) and the wheel fork (3) are rotatably connected, and a shock-absorbing spring (16) is provided between the wheel seat (1) and the wheel fork (3).

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