Wheel brake assembly

Abstract

The invention discloses a wheel brake assembly which comprises a wheel seat, a wheel fork is arranged on the lower portion of the wheel seat, a wheel is connected to the wheel fork, a plurality of brake tooth grooves are formed in the wheel in the circumferential direction, a sliding piece capable of sliding relative to the wheel fork is arranged on the wheel fork, and a clamping part capable of being clamped into or separated from the brake tooth grooves when the sliding piece slides is arranged on the sliding piece. The wheel seat is connected with a first driving assembly capable of driving the sliding part to slide, the first driving assembly comprises a rotating part rotationally connected to the wheel seat or the wheel fork, the first driving assembly further comprises a sliding part slidably connected to the wheel seat, and the sliding part can drive the rotating part to rotate when sliding relative to the wheel seat. The rotating part is connected with the sliding part so that the sliding part can slide relative to the wheel fork when the rotating part rotates, and an elastic reset part for driving the sliding part to slide and reset is arranged between the sliding part and the wheel fork. The locking device is simple in structure and convenient to lock and unlock.

Description

Technical Field

[0001] This invention relates to a wheel brake assembly. Background Technology

[0002] To ensure safety, strollers are typically equipped with brakes to lock the wheels. Existing wheel brake assemblies usually use friction pad brakes, which achieve braking by generating friction between the friction pads and the wheel hub or tire surface. However, this structure is relatively complex, with many parts, making installation and maintenance inconvenient. Over time, the friction pads are prone to wear, leading to reduced braking force or even failure, affecting safety. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a wheel brake assembly that is simple in structure and easy to lock and unlock.

[0004] This invention is achieved through the following technical solution:

[0005] A wheel brake assembly includes a wheel seat, a wheel fork at the lower part of the wheel seat, a wheel connected to the wheel fork, a plurality of brake teeth grooves along the circumferential direction on the wheel, a sliding member on the wheel fork that can slide relative to it, the sliding member having a locking part that can engage or disengage from the brake teeth grooves when sliding, a first drive assembly connected to the wheel seat that can drive the sliding member to slide, the first drive assembly including a rotating member rotatably connected to the wheel seat or the wheel fork, the first drive assembly further including a sliding component slidably connected to the wheel seat, the sliding component driving the rotating member to rotate when sliding relative to the wheel seat, the rotating member being connected to the sliding component so that the sliding component can slide relative to the wheel fork when the rotating member rotates, and an elastic reset component being provided between the sliding component and the wheel fork to drive the sliding component to slide back to its original position.

[0006] The rotating component includes a rotating shaft that is rotatably connected to the wheel seat or wheel fork. The rotating shaft has a first mating part in the middle that cooperates with a sliding component. When the sliding component slides relative to the wheel seat, the sliding component can cooperate with the first mating part to make the rotating shaft rotate. The outer end of the rotating shaft has a second mating part that connects and cooperates with the sliding component. When the rotating shaft rotates, the second mating part can drive the sliding component to slide relative to the wheel fork.

[0007] The sliding component includes a sliding block capable of sliding longitudinally, the sliding block having a plurality of longitudinally arranged first teeth, and the first mating part being a first gear located in the middle of the rotating shaft and meshing with the first teeth.

[0008] The second mating part includes a second gear located at the outer end of the rotating shaft. The sliding member has a plurality of linearly arranged second teeth that mesh with the second gear. When the second gear rotates with the rotating shaft, the second gear drives the sliding member to slide through the second teeth.

[0009] The sliding member includes a sliding seat that can slide along the wheel fork. The locking part is provided on the sliding seat. The sliding member also includes a sliding base. The second tooth is provided on the sliding base. The sliding base has a protruding part. The sliding base has a movable groove that allows the protruding part to be inserted and move within it. When the second gear drives the sliding base to slide, the groove wall of the movable groove can apply a force to the protruding part, causing the protruding part to move relative to the groove wall of the movable groove, thereby causing the sliding base to drive the locking part to move. A spring is also provided between the sliding base and the wheel fork to push the sliding member to slide and reset when the force of the movable groove wall on the protruding part is removed.

[0010] The second mating part includes a cam block located at the outer end of the rotating shaft and protruding to one side of the rotating shaft. The sliding member also includes a sliding rod. A spring is provided between the sliding rod and the wheel fork. The snap-fit ​​part is located at the lower end of the sliding rod. A bent extension is provided at the upper end of the sliding rod. When the cam block rotates with the rotating shaft and pushes the extension, the extension can drive the sliding rod to move. A receiving groove is provided between the extension and the sliding rod to accommodate the cam block. When the cam block rotates and its outer end disengages from the extension, the cam block releases the extension, causing the spring to push the sliding rod to slide back to its original position.

[0011] The elastic force of the elastic reset component is greater than that of the spring.

[0012] The wheel fork is provided with a top abutment surface, the sliding member is provided with a protruding positioning part, one end of the spring is sleeved on the positioning part, and the other end of the spring abuts against the top abutment surface.

[0013] The upper part of the wheel seat is provided with a connecting column for connecting to the vehicle frame. The connecting column is provided with a sliding groove. The sliding block is provided with a sliding column that can pass through the sliding groove and slide along the sliding groove. The vehicle frame is also provided with a second driving member that can push the sliding column, thereby causing the sliding component to slide relative to the wheel seat.

[0014] Compared with existing technologies, this invention has the following advantages: When locking the wheel, the sliding component moves relative to the wheel fork, compressing the elastic reset component. The movement of the sliding component drives the rotating component to rotate, which in turn causes the sliding component to move synchronously. At this time, the locking part moves with the sliding component and engages in the brake tooth groove, preventing the wheel from rotating relative to the wheel fork and thus locking it. When unlocking the wheel, the force applied to the sliding component is released. The elastic reset component returns to its original compressed state, and the sliding component is pushed in the opposite direction by the elastic reset component. The sliding component drives the rotating component to rotate in the opposite direction, causing the sliding component to move in the opposite direction, disengaging the locking part from the corresponding brake tooth groove. At this time, the wheel can rotate relative to the wheel fork and move. This invention offers convenient locking operation; it only requires driving the sliding component to slide, allowing the locking part to engage in the brake tooth groove, which is very convenient and provides a more secure and safer lock. Attached Figure Description

[0015] Figure 1 This is one of the perspective views of the first embodiment of the wheel brake assembly of the present invention;

[0016] Figure 2 This is a second perspective view of the first embodiment of the wheel brake assembly of the present invention;

[0017] Figure 3 This is one of the exploded views of the first embodiment of the wheel brake assembly of the present invention;

[0018] Figure 4 This is a second perspective view of the first embodiment of the wheel brake assembly of the present invention;

[0019] Figure 5 This is the second exploded view of the first embodiment of the wheel brake assembly of the present invention;

[0020] Figure 6 This is the third exploded view of the first embodiment of the wheel brake assembly of the present invention;

[0021] Figure 7 This is one of the disassemblies of the rotating and sliding components in the first embodiment of the wheel brake assembly of the present invention;

[0022] Figure 8 This is the second disassembly of the rotating and sliding components in the first embodiment of the wheel brake assembly of the present invention;

[0023] Figure 9 This is one of the perspective views of the second embodiment of the wheel brake assembly of the present invention;

[0024] Figure 10 This is a second perspective view of the second embodiment of the wheel brake assembly of the present invention;

[0025] Figure 11This is a second perspective view of the second embodiment of the wheel brake assembly of the present invention;

[0026] Figure 12 This is an exploded view of a component of the second embodiment of the wheel brake assembly of the present invention. Detailed Implementation

[0027] The present invention will now be further described with reference to the accompanying drawings:

[0028] Example 1: As Figures 1 to 8 As shown, the present invention provides a wheel brake assembly, including a wheel seat 11, a wheel fork 12 at the lower part of the wheel seat 11, a wheel 13 connected to the wheel fork 12, a plurality of brake teeth 131 along the circumferential direction on the wheel 13, a sliding member 2 that can slide relative to the wheel fork 12, and a locking part 21 that can engage or disengage from the brake teeth 131 when sliding. A first drive assembly 4 that can drive the sliding member 2 to slide is connected to the wheel seat 11. The first drive assembly 4 includes a rotating member 41 rotatably connected to the wheel seat 11 or the wheel fork 12, and a sliding component 42 slidably connected to the wheel seat 11. When the sliding component 42 slides relative to the wheel seat 11, it can drive the rotating member 41 to rotate. The rotating member 41 is connected to the sliding member 2 so that when the rotating member 41 rotates, the sliding member 2 can slide relative to the wheel fork 12. An elastic reset member 43 that drives the sliding component 42 to slide back is provided between the sliding component 42 and the wheel fork 12.

[0029] When wheel 13 needs to be locked, the sliding component 42 is moved relative to wheel fork 12, and the elastic reset component 43 is compressed. When the sliding component 42 moves, it drives the rotating component 41 to rotate. When the rotating component 41 rotates, it drives the sliding component 2 to move synchronously. At this time, the locking part 21 moves with the sliding component 2 and locks into the brake tooth groove 131. Wheel 13 cannot rotate relative to wheel fork 12 and is locked. When wheel 13 needs to be unlocked, the force applied to the sliding component 42 is removed. At this time, the elastic reset component 43 is reset from the compressed state. The sliding component 42 is pushed by the elastic reset component 43 and moves in the opposite direction, thereby causing the rotating component to rotate in the opposite direction and the sliding component to move in the opposite direction. This causes the locking part 21 to disengage from the corresponding brake tooth groove 131. At this time, wheel 13 can rotate relative to wheel fork 12 and move. The locking operation of this invention is convenient. It only requires driving the sliding component 42 to slide, so that the locking part 21 can be locked into the brake tooth groove 131. It is very convenient and the locking is more stable and safer to use.

[0030] In one embodiment, the brake groove 131 is located on the wheel 13 near the pivot, and the slider 2 is configured to move downward relative to the wheel fork 12 to engage the locking part 21 into the corresponding brake groove 131. Of course, it is also conceivable that in another embodiment, the brake groove 131 is located on the inner ring of the wheel 13, and the slider 2 is configured to move upward relative to the wheel fork 12 to engage the locking part 21 into the corresponding brake groove 131.

[0031] The rotating component 41 includes a rotating shaft 411 rotatably connected to the wheel seat 11 or the wheel fork 12. The rotating shaft 411 has a first mating part 412 in the middle that cooperates with the sliding component 42. When the sliding component 42 slides relative to the wheel seat 11, the sliding component 42 can cooperate with the first mating part 412 to make the rotating shaft 411 rotate. The outer end of the rotating shaft 411 has a second mating part 413 that connects and cooperates with the sliding component 2. When the rotating shaft 411 rotates, the second mating part 413 can drive the sliding component 2 to slide relative to the wheel fork 12.

[0032] When the sliding member 42 slides relative to the wheel seat 11, the sliding member 42 engages with the first mating part 412 to make the rotating shaft 411 rotate. The rotating shaft 411 drives the sliding member 2 to slide through the second mating part 413 provided at the outer end, thereby causing the locking part 21 to engage or disengage from the brake tooth groove 131.

[0033] The sliding component 42 includes a sliding block 421 capable of longitudinal sliding. The sliding block 421 has multiple longitudinally arranged first teeth 4211. The first engaging part 412 is a first gear located in the middle of the rotating shaft 411 and meshing with the first teeth 4211. When the sliding component 42 slides downwards or upwards, the first teeth 4211 drive the first engaging part 412 to rotate. At this time, the first engaging part 412 can drive the rotating shaft 411 to rotate relative to the wheel fork 12.

[0034] The second mating part 413 includes a second gear 4131 located at the outer end of the rotating shaft 411. The sliding member 2 has a plurality of linearly arranged second teeth 22 that mesh with the second gear 4131. When the second gear 4131 rotates with the rotating shaft 411, the second gear 4131 drives the sliding member 2 to slide through the second teeth 22.

[0035] The second gear 4131 and the second tooth 22 work together so that when the rotating shaft 411 rotates, it drives the second gear 4131 to rotate as well, thereby causing the sliding member 2 to slide up and down relative to the wheel fork 12.

[0036] The sliding member 2 includes a sliding seat 23 that can slide along the wheel fork 12. The locking part 21 is provided on the sliding seat 23. The sliding member 2 also includes a sliding seat 24. The second tooth 22 is provided on the sliding seat 24. The sliding seat 23 is provided with a protruding part 231. The sliding seat 24 is provided with a movable groove 241 that allows the protruding part 231 to be inserted and move within it. When the second gear 4131 drives the sliding seat 24 to slide, the groove wall of the movable groove 241 can apply a force to the protruding part 231, causing the protruding part 231 to move relative to the groove wall of the movable groove 241, thereby causing the sliding seat 23 to drive the locking part 21 to move. A spring 3 is also provided between the sliding seat 23 and the wheel fork 12, which can push the sliding member 2 to slide back to its original position when the groove wall of the movable groove 241 removes the force on the protruding part 231.

[0037] In one embodiment, the brake tooth groove 131 is positioned near the axle of the wheel 13. When the sliding block 421 is driven to slide downward relative to the wheel seat 11, the elastic reset member 43 changes from a released state to a compressed state. Multiple first teeth 4211 on the sliding block 421 can drive the first mating part 412 to rotate. The rotation of the first mating part 412 drives the rotating shaft 411 to rotate. When the rotating shaft 411 rotates, the second gear 4131 follows the rotating shaft 411. The rotation of the second gear 4131, through the meshing of the second teeth 22, causes the sliding seat 24 to move downward. When the sliding seat 24 moves downward relative to the wheel fork 12, the spring 3 changes from a compressed state to a released state. When the sliding seat 24 moves downward relative to the wheel fork 12, the bottom wall of the sliding seat 24's movable groove 241 releases the force applied to the protrusion 231. During this process, the spring 3 pushes the sliding seat 23 downward, and the sliding seat 23 moves downward relative to the wheel fork. As the wheel 12 moves downward, the locking part 21 at the lower end of the sliding seat 23 engages with the corresponding brake tooth groove 131, locking the wheel 13. When the force on the sliding block 421 is removed, the elastic reset member 43 pushes the sliding block 421 upward. The multiple first teeth 4211 on the sliding block 421 drive the first mating part 412 to rotate in the opposite direction. The first mating part 412 drives the rotating shaft 411 to rotate in the opposite direction. The second gear 4131 follows the rotating shaft 411 in reverse. The second gear 4131 is driven by the meshing of the second teeth 22, thereby causing the sliding seat 24 to move upward. At this time, the bottom wall of the movable groove 241 of the sliding seat 24 can drive the protrusion 231 to move, applying an upward force to the protrusion 231, causing the sliding seat 23 to move upward. This causes the locking part 21 at the lower end of the sliding seat 23 to disengage from the brake tooth groove 131, and the spring 3 changes from a released state to a compressed state, allowing the wheel 13 to rotate relative to the wheel fork 12.

[0038] The elastic force of the elastic reset member 43 is greater than that of the spring 3, so that the locking part 21 remains disengaged from the brake tooth groove 131 when the external force applied to the sliding member 42 is removed. When the wheel brake assembly of the present invention is in use, because the elastic force of the elastic reset member 43 is greater than that of the spring 3, the locking part 21 can be stably maintained in the position disengaged from the brake tooth groove 131, avoiding contact between the locking part 21 and the brake tooth groove 131 or accidental braking due to the elastic force of the spring 3; at the same time, when braking is required, the locking part 21 can be locked into the brake tooth groove 131 simply by overcoming the elastic force of the elastic reset member 43, thereby improving the safety of the brake assembly.

[0039] The wheel fork 12 is provided with a guide hole 121 that can accommodate the locking part 21 and allow the locking part 21 to slide inside, so as to facilitate the sliding of the locking part 21.

[0040] The wheel fork 12 is also provided with a guide groove 122 that can guide the sliding seat 23 to slide, so as to facilitate the sliding of the sliding seat 23.

[0041] The wheel fork 12 is provided with a top abutment surface 123, and the sliding member 2 is provided with a protruding positioning part 26. One end of the spring 3 is sleeved on the positioning part 26, and the other end of the spring 3 abuts against the top abutment surface 123. The positioning part 26 cooperates with the top abutment surface 123 to position the spring 3 and prevent the spring 3 from moving freely.

[0042] The wheel seat 11 has a connecting post 111 on its upper part for connection to the vehicle frame 5. The connecting post 111 has a sliding groove 1111. The sliding block 421 has a sliding post 422 that can pass through and slide along the sliding groove 1111. The vehicle frame 5 also has a second driving member 6 that can push the sliding post 422, causing the sliding member 42 to slide relative to the wheel seat 11. The second driving member 6 can apply a driving force to the top of the sliding post 422, causing the sliding post 422 to slide relative to the sliding groove 1111, and thus causing the sliding block 421 to slide relative to the wheel seat 11. The vehicle frame 5 can be a children's vehicle frame, pet vehicle frame, children's tricycle frame, etc. The second driving member 6 can be driven by existing devices such as a pull rope or push rod spring.

[0043] Example 2: Figures 9 to 12As shown, the difference between this embodiment and Embodiment 1 is that: the second mating part 413 includes a cam block 4132 located at the outer end of the rotating shaft 411 and protruding to one side of the rotating shaft 411; the sliding member 2 also includes a sliding rod 25; a spring 3 is provided between the sliding rod 25 and the wheel fork 12; the snap-fit ​​part 21 is located at the lower end of the sliding rod 25; and a bent extension part 251 is provided at the upper end of the sliding rod 25. When the cam block 4132 rotates with the rotating shaft 411 and pushes the extension part 251, the extension part 251 can drive the sliding rod 25 to move. A receiving groove 200 is provided between the extension part 251 and the sliding rod 25 to accommodate the cam block 4132. When the end of the cam block 4132 near the rotating shaft 411 rotates into the receiving groove 200, the cam block 4132 releases the extension part 251, causing the spring 3 to push the sliding rod 25 to slide and reset. In the initial state, the outer end of the cam block 4132 abuts against the extension 251 upwards, the spring 3 is compressed, and the engaging part 21 disengages from the brake tooth groove 131. When the sliding block 421 is driven to slide downwards relative to the wheel seat 11, the multiple first teeth 4211 on the sliding block 421 can drive the first mating part 412 to rotate. When the first mating part 412 rotates, it can drive the rotating shaft 411 to rotate. When the rotating shaft 411 rotates, the cam block 4132 rotates with the rotating shaft 411, and the outer end of the cam block 4132 disengages from the extension 251. At this time, the cam block 4132 no longer pushes the extension 251 upwards. The cam block 4132 is opposite to the receiving groove 200, the spring 3 extends, causing the sliding rod 25 to move downwards, and the engaging part 21 engages with the brake tooth groove 131. When the external force on the sliding component 42 is removed, since the elastic force of the elastic reset component 43 is greater than the elastic force of the spring 3, the elastic reset key 43 pushes the sliding block 421 upward. The multiple first teeth 4211 on the sliding block 421 drive the first mating part 412 to rotate in the opposite direction. The first mating part 412 drives the rotating shaft 411 to rotate in the opposite direction. The cam block 4132 follows the rotating shaft 411 to rotate in the opposite direction. During the rotation of the cam block 4132, the outer end of the cam block 4132 gradually pushes the extension part 251 upward, causing the sliding rod 25 to move upward. At this time, the locking part 21 disengages from the brake tooth groove 131, the spring 3 is compressed, and the brake is released.

[0044] 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 wheel brake assembly, characterized in that: The system includes a wheel seat (11), a wheel fork (12) at the lower part of the wheel seat (11), a wheel (13) connected to the wheel fork (12), a plurality of brake teeth (131) along the circumferential direction on the wheel (13), a sliding member (2) that can slide relative to the wheel fork (12), a locking part (21) that can engage or disengage from the brake teeth (131) when sliding, and a first drive assembly (4) that can drive the sliding member (2) to slide connected to the wheel seat (11). The first drive assembly (4) includes a rotating... The first drive assembly (4) further includes a rotating component (41) movably connected to the wheel seat (11) or the wheel fork (12). The first drive assembly (4) also includes a sliding component (42) slidably connected to the wheel seat (11). When the sliding component (42) slides relative to the wheel seat (11), it can drive the rotating component (41) to rotate. The rotating component (41) is connected to the sliding component (2) so that when the rotating component (41) rotates, the sliding component (2) can slide relative to the wheel fork (12). An elastic reset component (43) is provided between the sliding component (42) and the wheel fork (12) to drive the sliding component (42) to slide and reset.

2. The wheel brake assembly according to claim 1, characterized in that: The rotating component (41) includes a rotating shaft (411) rotatably connected to the wheel seat (11) or the wheel fork (12). The rotating shaft (411) has a first mating part (412) in the middle that cooperates with the sliding component (42). When the sliding component (42) slides relative to the wheel seat (11), the sliding component (42) can cooperate with the first mating part (412) to make the rotating shaft (411) rotate. The outer end of the rotating shaft (411) has a second mating part (413) that connects and cooperates with the sliding component (2). When the rotating shaft (411) rotates, the second mating part (413) can drive the sliding component (2) to slide relative to the wheel fork (12).

3. The wheel brake assembly according to claim 2, characterized in that: The sliding component (42) includes a sliding block (421) that can slide longitudinally. The sliding block (421) is provided with a plurality of longitudinally arranged first teeth (4211). The first mating part (412) is a first gear located in the middle of the rotating shaft (411) and meshing with the first teeth (4211).

4. The wheel brake assembly according to claim 2 or 3, characterized in that: The second mating part (413) includes a second gear (4131) located at the outer end of the rotating shaft (411). The sliding member (2) has a plurality of linearly arranged second teeth (22) that mesh with the second gear (4131). When the second gear (4131) rotates with the rotating shaft (411), the second gear (4131) drives the sliding member (2) to slide through the second teeth (22).

5. The wheel brake assembly according to claim 4, characterized in that: The sliding member (2) includes a sliding seat (23) that can slide along the wheel fork (12), the snap-fit ​​part (21) is provided on the sliding seat (23), the sliding member (2) also includes a sliding seat (24), the second tooth (22) is provided on the sliding seat (24), the sliding seat (23) is provided with a protruding protrusion (231), and the sliding seat (24) is provided with a movable groove (241) that allows the protrusion (231) to be inserted and move within it. When the wheel (4131) drives the sliding seat (24) to slide, the groove wall of the movable groove (241) can apply force to the protrusion (231) and make the protrusion (231) move relative to the groove wall of the movable groove (241), thereby causing the sliding seat (23) to drive the locking part (21) to move. A spring (3) is also provided between the sliding seat (23) and the wheel fork (12) to push the sliding member (2) to slide and reset when the groove wall of the movable groove (241) removes the force on the protrusion (231).

6. The wheel brake assembly according to claim 5, characterized in that: The elastic force of the elastic reset member (43) is greater than that of the spring (3).

7. The wheel brake assembly according to claim 2 or 3, characterized in that: The second mating part (413) includes a cam block (4132) located at the outer end of the rotating shaft (411) and protruding to one side of the rotating shaft (411). The sliding member (2) also includes a sliding rod (25). A spring (3) is provided between the sliding rod (25) and the wheel fork (12). The snap-fit ​​part (21) is located at the lower end of the sliding rod (25). A bent extension part (251) is provided at the upper end of the sliding rod (25). When the cam block (4132) rotates... When the rotating shaft (411) pushes the extension (251), the extension (251) can drive the sliding rod (25) to move. A receiving groove (200) is provided between the extension (251) and the sliding rod (25) to accommodate the cam block (4132). When the cam block (4132) rotates and its outer end disengages from the extension (), the cam block (4132) releases the extension (251) and the spring (3) pushes the sliding rod (25) to slide back to its original position.

8. The wheel brake assembly according to claim 7, characterized in that: The elastic force of the elastic reset member (43) is greater than that of the spring (3).

9. The wheel brake assembly according to claim 5 or 7, characterized in that: The wheel fork (12) is provided with a top abutment surface (123), the sliding member (2) is provided with a protruding positioning part (26), one end of the spring (3) is sleeved on the positioning part (26), and the other end of the spring (3) abuts against the top abutment surface (123).

10. The wheel brake assembly according to claim 3, characterized in that: The upper part of the wheel seat (11) is provided with a connecting column (111) for connecting to the vehicle frame (5). The connecting column (111) is provided with a sliding groove (1111). The sliding block (421) is provided with a sliding column (422) that can pass through the sliding groove (1111) and slide along the sliding groove (1111). The vehicle frame (5) is also provided with a second driving member (6) that can push the sliding column (422) so that the sliding member (42) slides relative to the wheel seat (11).

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