Hand brake for a walking frame and walking frame

Abstract

The utility model relates to the technical fields of walking aid cart, disclose a hand brake device and walking aid cart of walking aid cart, hand brake device includes brake control mechanism and brake assembly, brake control mechanism includes holding handle and brake handle, holding handle includes holding part and connecting part, and the outside of connecting part is equipped with movable cavity, and the bottom is connected with guide pipe, and the top of guide pipe is provided with brake block with through -hole, brake handle includes handle part and movable part, and movable part rotationally sets up in the inner wall of movable cavity, and is connected with brake block rotationally, and movable part is connected with brake cable, and brake cable passes through through -hole and is built into guide pipe, and brake cable other end is connected with brake assembly, wherein, set up rotating recess on movable part, set up convex piece with rotating recess cooperation on brake block, when brake handle rotates, and convex piece and rotating recess's different position's clamping cooperation are matched. The application realizes the brake function of walking aid cart through convex piece and rotating recess rotation cooperation.

Description

Technical Field

[0001] This application relates to the field of walking aids, and in particular to a handbrake device for a walking aid and the walking aid itself. Background Technology

[0002] In the field of mobility aids, walking carts are of great significance to people with mobility impairments, greatly improving their autonomy and convenience, enabling them to move and move independently to a certain extent, and playing a key role in daily life and rehabilitation training. With the increasing aging of society and growing concern for special groups, the demand for walking carts continues to grow, and related technologies are constantly developing and improving to better meet users' actual needs.

[0003] Existing handbrake devices have significant limitations. They typically only have simple release and braking functions, lacking clear gear feel and tactile feedback, making it difficult for users to accurately perceive the braking status. In addition, existing handbrake devices lack reliable parking lock functions. The handbrakes of many simple walking aids require the user to constantly squeeze the handle to maintain the braking state, which cannot achieve safe parking. Although some designs have added a lock, they are often complex in structure and difficult to operate, especially for elderly people with weak hands, and unlocking is inconvenient, causing certain inconvenience to users.

[0004] Therefore, it is necessary to develop a handbrake device for use in walking aids to solve the technical problems of inconvenient use and lack of locking function of existing walking aids' braking devices. Utility Model Content

[0005] In order to solve the technical problems of inconvenient use and lack of locking function of the existing walking aid trolley braking device, this application provides a handbrake device for a walking aid trolley and a walking aid trolley.

[0006] A handbrake device for a walking trolley includes a brake operating mechanism and a brake assembly controlled by the brake operating mechanism. The brake control mechanism includes a grip handle and a brake lever. The grip handle includes a gripping part and a connecting part. The outer side of the connecting part has a movable cavity, and the bottom of the connecting part is connected to a guide tube. The top of the guide tube is provided with a brake block, and the brake block is provided with a through hole. The brake handle includes a handle portion and a movable portion. The movable portion is rotatably disposed on the inner wall of the movable cavity and rotatably connected to the brake block. The movable portion is connected to a brake cable. The brake cable passes through the through hole and is built into the guide tube. The end of the brake cable away from the brake handle is connected to the brake assembly. The movable part is provided with a rotating groove, and the brake block is provided with a protrusion that cooperates with the rotating groove. When the brake handle is rotated, the protrusion engages with the rotating groove at different positions.

[0007] By adopting the above technical solution, this application achieves effective braking control of the walking trolley through the reasonable design of the handbrake device, with the brake control mechanism and brake components working together, making operation convenient. At the same time, in addition to guiding the brake cable, the guide tube can also effectively house the brake cable inside the guide tube, ensuring stable operation while further reducing the safety problems caused by exposed brake cables to users.

[0008] In addition, the movable part on the brake handle is rotatably connected to the brake block. The rotating groove of the movable part engages with the protrusion of the brake block. When the brake handle is rotated, the protrusion engages with the rotating groove at different positions, which can realize different braking states, such as releasing the brake, applying the brake, and applying the brake. It can also realize the locking function of the brake assembly. Users can flexibly control the brake according to actual needs, which improves the safety and convenience of using the walking aid.

[0009] Furthermore, the protrusion includes a first protrusion and a second protrusion, and the first protrusion is higher than the second protrusion. The two ends of the rotating groove are provided with a first abutment and a second abutment. The rotating groove includes a first arc-shaped portion, a second arc-shaped portion, and a third arc-shaped portion disposed between the first abutment and the second abutment and connected in sequence. The highest points of the first arc-shaped portion, the second arc-shaped portion, and the third arc-shaped portion gradually decrease. When the brake lever is in the released state, the first arc-shaped portion engages with the first protrusion, and the third arc-shaped portion engages with the second protrusion. When the brake lever is in the applied braking state, the first arc-shaped portion separates from the first protrusion, the third arc-shaped portion separates from the second protrusion, the first protrusion abuts against the side wall of the rotating groove, and the second abutting portion abuts against the side of the second protrusion. When the brake lever is in the applied braking state, the second arc-shaped portion engages with the first protrusion, the third arc-shaped portion separates from the second protrusion, and the first abutting portion abuts against the side wall of the first protrusion.

[0010] By adopting the above technical solution, the protruding part is provided with a first protrusion and a second protrusion with different heights. The rotating groove is formed by the sequential connection of a first arc-shaped part, a second arc-shaped part, and a third arc-shaped part, which gradually decrease in height from their highest point. This enables precise control of the brake handle in different states. In the released brake state, the first arc-shaped part engages with the first protrusion, and the third arc-shaped part engages with the second protrusion, ensuring that the brake is released and the cart can move normally. In the applied brake state, the first arc-shaped part separates from the first protrusion, and the third arc-shaped part separates from the second protrusion. The first protrusion abuts against the side wall of the rotating groove, and the second abutting part abuts against the side of the second protrusion. Under the pull of the brake cable, the brake assembly can stop the vehicle in time. In the down-braking state, the second arc-shaped part engages with the first protrusion, the third arc-shaped part separates from the second protrusion, and the first abutting part abuts against the side wall of the first protrusion. Under the pull of the brake cable, the brake assembly can lock the wheel and achieve the locking function. The structural design of this application is reasonable and can meet different braking needs, providing users with a safer and more reliable braking experience.

[0011] Furthermore, two protrusions are provided, symmetrically arranged on the top of the brake block, and two rotating grooves are provided, symmetrically arranged on both sides of the movable part, and the rotating grooves are rotatably engaged with the protrusions.

[0012] By adopting the above technical solution, two protrusions are symmetrically arranged on the top of the brake block, and two rotating grooves are symmetrically arranged on both sides of the movable part, and the two are rotated and cooperated, which can effectively improve the stability of the brake handle during rotation. Compared with the setting of a single protrusion and rotating groove, the symmetrical double protrusion and double rotating groove structure can make the force more even, reduce the shaking and deviation during rotation, make the braking operation more stable and smooth, and thus improve the overall performance and user experience of the handbrake device for the trolley.

[0013] Furthermore, the through hole is disposed between the first protrusions of the two protrusions, a connecting groove is disposed between the two rotating grooves, and one end of the brake cable is fixedly connected to the connecting groove of the movable part.

[0014] By adopting the above technical solution, one end of the brake cable is fixedly connected to the connecting groove between the two rotating grooves of the movable part, and passes through the through hole between the first protrusions of the two protrusions. This makes the path of the brake cable through the through hole more reasonable, effectively reducing interference with other components. The brake cable is subjected to more uniform force when the movable part rotates, improving the transmission efficiency of the brake cable and the stability of the handbrake device.

[0015] Furthermore, the guide tube includes a first guide tube and a second guide tube, the top of the first guide tube being connected to the grip handle, and the bottom of the second guide tube being connected to the wheel of the walking aid.

[0016] By adopting the above technical solution, the guide tube is divided into a first guide tube and a second guide tube. The top of the first guide tube is connected to the grip handle, and the bottom of the second guide tube is connected to the wheel. This structural design can reasonably guide the direction of the brake line, so that the operating force of the brake control mechanism can be transmitted to the brake components at the wheel more smoothly, effectively improving the braking efficiency and stability of the handbrake device.

[0017] Furthermore, the brake assembly includes an elastic element and a brake pad, the brake pad being rotatably connected to the outside of the second guide tube and facing the wheel, the brake cable having one end away from the brake operating mechanism connected to the traction end of the brake pad, one end of the elastic element being connected to the brake pad, and the other end being fixedly connected to the outside of the second guide tube.

[0018] By adopting the above technical solution, the elastic element and brake pads in the brake assembly work together. When the brake cable is pulled by the brake operating mechanism, the brake pads rotate outside the second guide tube and move towards the wheel to achieve braking. Furthermore, when the brake cable is released, the elastic element can pull the brake pads back to their initial position to release the brake. This structural design makes braking operation convenient and effectively controls the braking and releasing of the wheels, improving the safety and ease of use of the walking aid.

[0019] This utility model also provides a walking aid trolley, including a trolley body and wheels disposed at the bottom of the trolley body, wherein the trolley body includes a handbrake device as described above.

[0020] By adopting the above technical solution, the main body of the walking trolley is equipped with the handbrake device mentioned above. The handbrake device of the walking trolley is rotatably connected to the brake block through the movable part of the brake handle, so as to realize the engagement of the protrusion and the rotating groove. The protrusion includes a first protrusion and a second protrusion with different heights, and the rotating groove includes a first arc-shaped part, a second arc-shaped part and a third arc-shaped part with the highest point gradually decreasing. This allows the two parts to engage at different positions when the brake handle is rotated, realizing three states: releasing the brake, engaging the brake, and disengaging the brake. This enriches the locking function of the handbrake device, ensures the stable switching of the braking state of the walking trolley, and provides reliable braking control for the walking trolley.

[0021] In summary, this application includes at least the following beneficial technical effects: the handbrake device of this application can achieve the engagement of the protrusion and the rotating groove at different positions through the rotation design of the brake block and the brake handle, which can realize the stable switching and locking of different braking states, improve the braking force and stability, and meet the requirements of safe and reliable braking. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a walking aid cart provided in an embodiment of this utility model; Figure 2 This is a schematic diagram of the handbrake device of a walking cart provided in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the brake control mechanism of the handbrake device of a walking cart provided in this embodiment of the utility model; Figure 4 This is a partial cross-sectional view of the handbrake device of a walking trolley in the released state according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the brake block structure of a handbrake device for a walking trolley provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the brake handle of a handbrake device for a walking trolley provided in an embodiment of the present invention; Figure 7 This is a partial cross-sectional view of the handbrake device of a walking trolley in the active braking state according to an embodiment of the present invention; Figure 8 This is a partial cross-sectional view of the handbrake device of a walking cart provided in this embodiment of the present invention in the braked state.

[0023] Explanation of reference numerals in the attached figures: 1. Handbrake device; 11. Handle grip; 111. Grip part; 112. Connecting part; 1121. Movable cavity; 12. Brake handle; 121. Handle part; 122. Movable part; 1221. Rotating groove; 12211. First arc-shaped part; 12212. Second arc-shaped part; 12213. Third arc-shaped part; 1222. First abutting part; 1223. Second abutting part; 1224. Connecting groove; 13. Guide tube; 131. First guide tube; 132. Second guide tube; 14. Brake block; 141. Through hole; 142. Protrusion; 1421. First protrusion; 1422. Second protrusion; 15. Brake cable; 16. Elastic element; 17. Brake pad; 2. Walking aid; 21. Wheel. Detailed Implementation

[0024] The following combination Figure 1-8 The technical solutions in the embodiments of this utility model will be described in detail.

[0025] Example 1 See Figure 1-2Embodiment 1 provides a handbrake device 1 for a walking aid, including a brake control mechanism and a brake assembly. The brake control mechanism includes a grip handle 11 and a brake handle 12. The grip handle 11 includes a grip portion 111 and a connecting portion 112. A movable cavity 1121 is provided on the outer side of the connecting portion 112, and a guide tube 13 is connected to the bottom of the connecting portion 112. The brake handle 12 includes a handle portion 121 and a movable portion 122. The movable portion 122 is rotatably disposed on the inner wall of the movable cavity 1121 and is rotatably connected to a brake block 14. A brake cable 15 is connected to the movable portion 122.

[0026] Among them, see Figure 3-5 A brake block 14 is provided at the top of the guide tube 13. A through hole 141 is provided on the brake block 14. The brake line 15 passes through the through hole 141 and is built into the guide tube 13. The end of the brake line 15 away from the brake handle 12 is connected to the brake assembly. A rotating groove 1221 is provided on the movable part 122 of the brake handle 12. A protrusion 142 that cooperates with the rotating groove 1221 is provided on the brake block 14. When the brake handle 12 rotates, the protrusion 142 engages with the rotating groove 1221 at different positions.

[0027] Specifically, see Figure 6 In this embodiment, the protrusion 142 includes a first protrusion 1421 and a second protrusion 1422, and the first protrusion 1421 is higher than the second protrusion 1422. The two ends of the rotating groove 1221 are provided with a first abutment 1222 and a second abutment 1223. The rotating groove 1221 includes a first arc-shaped portion 12211, a second arc-shaped portion 12212 and a third arc-shaped portion 12213 arranged between the first abutment 1222 and the second abutment 1223 and connected in sequence. The highest points of the first arc-shaped portion 12211, the second arc-shaped portion 12212 and the third arc-shaped portion 12213 gradually decrease.

[0028] When the brake lever 12 is in the released state, the first arc-shaped portion 12211 engages with the first protrusion 1421, and the third arc-shaped portion 12213 engages with the second protrusion 1422 (see reference). Figure 4 When the brake lever 12 is in the upper braking state, the first arc-shaped portion 12211 separates from the first protrusion 1421, the third arc-shaped portion 12213 separates from the second protrusion 1422, the first protrusion 1421 abuts against the side wall of the rotating groove 1221, and the second abutting portion 1223 abuts against the side of the second protrusion 1422 (see...). Figure 7 When the brake lever 12 is in the down brake state, the second arc-shaped portion 12212 engages with the first protrusion 1421, the third arc-shaped portion 12213 separates from the second protrusion 1422, and the first abutting portion 1222 abuts against the side wall of the first protrusion 1421 (see...). Figure 8 ).

[0029] To further improve the rotational stability of the brake handle 12 and the brake block 14, two protrusions 142 are provided, which are symmetrically arranged on the top of the brake block. Two rotational grooves 1221 are provided, which are symmetrically arranged on both sides of the movable part 122. The rotational grooves 1221 are rotatably engaged with the protrusions 142. A through hole 141 is provided between the first protrusions 1421 of the two protrusions 142. A connecting groove 1224 is provided between the two rotational grooves 1221.

[0030] Furthermore, the guide tube 13 includes a first guide tube 131 and a second guide tube 132 connected in sequence. The top of the first guide tube 131 is connected to the connecting part 112 of the grip handle 11, and the second guide tube 132 is fixedly connected to the wheel 21 of the walking aid 2. The brake assembly includes an elastic member 16 and a brake pad 17. The brake pad 17 is rotatably connected to the outside of the second guide tube 132 and faces the wheel 21. One end of the elastic member 16 is connected to the traction end of the brake pad 17, and the other end is fixed to the outside of the second guide tube 132. One end of the brake cable 15 is fixedly connected to the connecting groove 1224 of the movable part 122, and the other end passes through the through hole 141 and is built into the first guide tube 131 and the second guide tube 132, and passes through the bottom of the second guide tube 132 and is connected to the traction end of the brake pad 17.

[0031] The implementation principle of Embodiment 1 of this application is as follows: When the brake lever 12 is in the released state, the first arc-shaped portion 12211 engages with the first protrusion 1421, and the third arc-shaped portion 12213 engages with the second protrusion 1422 (see...). Figure 4 When the brake lever 12 is pulled upwards, the handbrake device 1 is in the upper braking state. The first arc-shaped portion 12211 separates from the first protrusion 1421, and the third arc-shaped portion 12213 separates from the second protrusion 1422. The first protrusion 1421 abuts against the side wall of the rotating groove 1221, and the second abutting portion 1223 abuts against the side of the second protrusion 1422. Under the traction of the brake cable 15, the brake pads 17 brake the wheels (see...). Figure 7 When the brake lever 12 is pulled down, the handbrake device 1 is in the down-braking state. The second arc-shaped portion 12212 engages with the first protrusion 1421, the third arc-shaped portion 12213 separates from the second protrusion 1422, and the first abutting portion 1222 abuts against the side wall of the first protrusion 1421. Under the traction of the brake cable 15, the brake pads 17 lock the wheel, realizing another form of braking (see...). Figure 8 ).

[0032] Example 2 Continue reading Figure 1Embodiment 2 also provides a walking aid trolley 2, which includes a trolley body and wheels 21 disposed at the bottom of the trolley body. The trolley body includes the handbrake device of Embodiment 1. By applying the handbrake device of Embodiment 1 to Embodiment 2, the walking aid trolley 2 can achieve the engagement of the protrusion 142 and the rotating groove 1221 at different positions through the rotation design of the brake block 14 and the brake handle 12. This enables stable switching and locking of different braking states, improves braking force and stability, and meets the requirements for safe and reliable braking.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A handbrake device for a walking aid, characterized in that: Includes a brake control mechanism and a brake assembly controlled by the brake control mechanism; The brake control mechanism includes a grip handle and a brake lever. The grip handle includes a gripping part and a connecting part. The outer side of the connecting part has a movable cavity, and the bottom of the connecting part is connected to a guide tube. The top of the guide tube is provided with a brake block, and the brake block is provided with a through hole. The brake handle includes a handle portion and a movable portion. The movable portion is rotatably disposed on the inner wall of the movable cavity and rotatably connected to the brake block. The movable portion is connected to a brake cable. The brake cable passes through the through hole and is built into the guide tube. The end of the brake cable away from the brake handle is connected to the brake assembly. The movable part is provided with a rotating groove, and the brake block is provided with a protrusion that cooperates with the rotating groove. When the brake handle is rotated, the protrusion engages with the rotating groove at different positions.

2. The handbrake device for a walking trolley according to claim 1, characterized in that: The protrusion includes a first protrusion and a second protrusion, with the first protrusion being higher than the second protrusion. The two ends of the rotating groove are provided with a first abutment and a second abutment. The rotating groove includes a first arc-shaped portion, a second arc-shaped portion, and a third arc-shaped portion, which are disposed between the first abutment and the second abutment and connected in sequence. The highest points of the first arc-shaped portion, the second arc-shaped portion, and the third arc-shaped portion gradually decrease. When the brake lever is in the released state, the first arc-shaped portion engages with the first protrusion, and the third arc-shaped portion engages with the second protrusion. When the brake lever is in the applied braking state, the first arc-shaped portion separates from the first protrusion, the third arc-shaped portion separates from the second protrusion, the first protrusion abuts against the side wall of the rotating groove, and the second abutting portion abuts against the side of the second protrusion. When the brake lever is in the applied braking state, the second arc-shaped portion engages with the first protrusion, the third arc-shaped portion separates from the second protrusion, and the first abutting portion abuts against the side wall of the first protrusion.

3. The handbrake device for a walking trolley according to claim 2, characterized in that: Two protrusions are provided, and the two protrusions are symmetrically arranged on the top of the brake block. Two rotating grooves are provided, and the rotating grooves are symmetrically arranged on both sides of the movable part. The rotating grooves are rotatably engaged with the protrusions.

4. The handbrake device for a walking trolley according to claim 3, characterized in that: The through hole is provided between the first protrusions of the two protrusions, and a connecting groove is provided between the two rotating grooves. One end of the brake cable is fixedly connected to the connecting groove of the movable part.

5. A handbrake device for a walking trolley according to any one of claims 1 to 4, characterized in that: The guide tube includes a first guide tube and a second guide tube. The top of the first guide tube is connected to the grip handle, and the bottom of the second guide tube is connected to the wheel of the walking aid.

6. The handbrake device for a walking trolley according to claim 5, characterized in that: The brake assembly includes an elastic element and a brake pad. The brake pad is rotatably connected to the outside of the second guide tube and faces the wheel. One end of the brake cable away from the brake operating mechanism is connected to the traction end of the brake pad. One end of the elastic element is connected to the brake pad, and the other end is fixedly connected to the outside of the second guide tube.

7. A walking aid stroller, characterized in that: It includes a trolley body and wheels disposed at the bottom of the trolley body, wherein the trolley body includes a handbrake device as described in any one of claims 1 to 6.

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