Brake device of rollator

Abstract

The utility model discloses a brake device of a rollator. The brake device comprises a fixed block, a brake block, a brake core wire, a flexible sheath and an elastic piece, the fixing block is fixedly arranged on a frame, close to wheels, of the rollator, a mounting cavity with an open end is formed in the fixing block in a protruding mode, the open end faces the wheels, a limiting part is arranged in the mounting cavity, and the brake block is movably arranged in the mounting cavity; one end of the flexible sheath is fixed on a handle seat of the rollator, the other end of the flexible sheath is connected with the brake block, the brake core wire is telescopically arranged in the flexible sheath in a penetrating manner, a core wire through hole communicated with the flexible sheath is formed in the brake block, and one end of the brake core wire penetrates through the handle seat of the rollator and is fixed on the brake handle. The other end of the brake core wire penetrates out of the core wire through hole of the brake block and is fixed to the limiting part, one end of the elastic piece abuts against the limiting part, and the other end of the elastic piece abuts against the brake block at the core wire through hole. The brake blocks directly act on the wheels, timely response of braking is guaranteed, and the structure is simple.

Description

Technical Field

[0001] This utility model relates to the field of walking aid technology, and in particular to a braking device for a walking aid. Background Technology

[0002] Elderly people often experience physical frailty and mobility issues, leading to numerous difficulties in their daily lives and travel. As a result, walking aids have emerged on the market. These walking aids are widely used in homes, hospitals, nursing homes, and other locations, providing significant convenience to those who need mobility support. In the home environment, walking aids can help the elderly or those with lower limb dysfunction to independently complete daily walking and activities; in hospitals and nursing homes, they serve as invaluable assistance to medical staff in caring for patients.

[0003] The braking devices of existing walking aids are too complex in structure. After a period of use, the walking aids are prone to insufficient braking response. Moreover, the complex structure is not conducive to the user's later maintenance. Utility Model Content

[0004] The purpose of this invention is to provide a braking device for a walking aid that can ensure timely braking response through a simple structure.

[0005] To achieve the above objectives, the solution of this utility model is as follows: a braking device for a walking aid, comprising a fixed block, a brake block, a brake core wire, a flexible sheath, and an elastic element; the fixed block is fixedly mounted on the frame of the walking aid near the wheel, and a mounting cavity with an open end protruding from the fixed block, the open end facing the wheel, and a limiting part is provided inside the mounting cavity, the brake block being movably mounted inside the mounting cavity; one end of the flexible sheath is fixed to the handlebar seat of the walking aid, the other end of the flexible sheath is connected to the brake block, and the brake core wire is extended and retracted through the sheath. Inside the flexible sheath, the brake block has a core wire through hole that communicates with the flexible sheath. One end of the brake core wire passes through the handlebar seat of the scooter and is fixed to the brake handle. The other end of the brake core wire passes through the core wire through hole of the brake block and is fixed to the limiting part. One end of the elastic element abuts against the limiting part, and the other end of the elastic element abuts against the brake block at the core wire through hole. Under the action of external force, the brake handle causes the brake core wire to extend and retract inside the flexible sheath. The flexible sheath pushes the brake block to extend from the open end of the mounting cavity relative to the brake core wire and abut against the wheel.

[0006] In a preferred embodiment, the brake block has a hollowed-out center, and the limiting part is located at the hollowed-out position in the center of the brake block.

[0007] In a preferred embodiment, the brake block also includes an adjusting bolt and an adjusting nut. One end of the brake block has a threaded through hole, and the other end of the flexible sheath is connected to the head of the adjusting bolt. The screw of the adjusting bolt extends through the threaded through hole into the hollowed-out position in the middle of the brake block. The adjusting nut is set on the screw of the adjusting bolt and is located between the head of the adjusting bolt and the brake block.

[0008] In a preferred embodiment, the adjusting bolt has an axial through-hole for the core wire, and the other end of the brake core wire passes through the core wire through-hole of the adjusting bolt and is fixed to the limiting part at the hollow position in the middle of the brake block.

[0009] In a preferred embodiment, a limiting block is provided at the other end of the brake core wire. The limiting part includes a first convex plate and a second convex plate. The first convex plate and the second convex plate are disposed on the cavity wall of the receiving cavity. A limiting groove is formed between the first convex plate and the second convex plate. The brake core wire is located in the limiting groove, and the limiting block abuts against the end of the limiting groove near the wheel.

[0010] In a preferred embodiment, the limiting block is cylindrical, and the first and second protrusions are provided with stepped surfaces that match the cylindrical limiting block. The brake core wire is located in the limiting groove, and the limiting block abuts against the stepped surface.

[0011] In a preferred embodiment, the elastic element is a compression spring, which is sleeved on the brake core wire at the hollow position in the middle of the brake block. One end of the compression spring abuts against the end of the limiting groove away from the wheel, and the other end of the compression spring abuts against the brake block at the through hole of the core wire.

[0012] In a preferred embodiment, the other end of the brake block is provided with a brake plate, the width of which is greater than the width of the brake block.

[0013] In a preferred embodiment, the device further includes a first housing and a second housing. The first housing is formed by protrusion on the fixing block. The first housing is provided with a first sliding groove and a second sliding groove. The second housing is provided with a first slide rail and a second slide rail. The first slide rail and the second slide rail are respectively slidably placed into the first sliding groove and the second sliding groove, so that the first housing is fixed on the second housing to form the mounting cavity.

[0014] In a preferred embodiment, a fastening screw is also included. The first housing has a threaded blind hole, and the second housing has a screw through hole. The fastening screw passes through the screw through hole and cooperates with the threaded blind hole to lock the second housing onto the first housing.

[0015] The beneficial effects of this utility model after adopting the above solution are as follows: The fixing block of this utility model is fixedly installed on the frame of the walking aid near the wheel. The fixing block has a protruding mounting cavity with the open end facing the wheel. The brake block is movably installed in the mounting cavity. One end of the flexible sleeve is fixed to the handlebar seat of the walking aid, and the other end of the flexible sleeve is connected to the brake block. The brake core wire is stretched and passed through the flexible sleeve. One end of the brake core wire passes through the handlebar seat of the walking aid and is fixed to the brake handle. The other end of the brake core wire passes through the core wire through hole of the brake block and is fixed to the limiting part. The elastic element is set between the limiting part and the brake block. When the brake handle is pulled under the action of external force, the brake core wire stretches and extends in the flexible sleeve. The flexible sleeve pushes the brake block to extend from the open end of the mounting cavity relative to the brake core wire and abut against the wheel. Since the brake block acts directly on the wheel, it ensures timely braking response. The structure is simple and can improve the stability of braking response and the safety of use. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the fixing block of this utility model with the second shell removed;

[0018] Figure 3 This is a schematic diagram of the second housing of this utility model;

[0019] Figure 4 This is a partial exploded structural diagram of the present invention;

[0020] Figure 5 This is a front view of the present invention with the second housing removed;

[0021] Figure 6 This is a schematic diagram of the present invention with the second housing, brake block and compression spring removed;

[0022] Figure 7 This is a front view of the utility model mounted on the vehicle frame;

[0023] Figure 8 This is a side view of the present invention mounted on a vehicle frame;

[0024] Figure 9 This is a schematic diagram of the present invention when the brake lever is not pressed;

[0025] Figure 10 This is a schematic diagram of the present invention when the brake handle is pressed;

[0026] Figure 11 This is a schematic diagram of another embodiment of the present invention in which an elastic soft sheath is provided at the connection between the other end of the flexible sheath and the adjusting bolt;

[0027] Figure 12 This is a schematic diagram of another embodiment of the present invention in which an elastic soft sheath is provided at the connection between the other end of the flexible sheath and the adjusting bolt, and the second housing is removed at another angle.

[0028] Figure 13 This is a schematic diagram showing that the first housing is provided with ribs at the mounting cavity position in other embodiments of this utility model;

[0029] Figure 14 This is a schematic diagram of the second housing having ribs at the mounting cavity position in another embodiment of this utility model.

[0030] Label Explanation:

[0031] 1. Fixing block; 10. Mounting cavity; 100. Rib; 11. Limiting part; 110. First convex plate; 111. Second convex plate; 112. Limiting groove; 113. Stepped surface; 14. First housing; 140. First slide groove; 141. Second slide groove; 142. Threaded blind hole; 15. Second housing; 150. First slide rail; 151. Second slide rail; 152. Screw through hole; 2. Brake block; 20. Adjusting bolt; 21. Adjusting nut; 22. Core wire through hole; 23. Threaded through hole; 24. Brake plate; 3. Brake core wire; 30. Limiting block; 4. Flexible sheath; 40. Soft sheath; 5. Elastic element; 51. Compression spring; 6. Frame; 7. Handle holder; 8. Brake handle; 9. Fastening screw. Detailed Implementation

[0032] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0033] This embodiment provides a braking device for a walking aid, such as... Figures 1 to 8 As shown, the device includes a fixed block 1, a brake block 2, a brake core wire 3, a flexible sheath 4, and an elastic element 5. The fixed block 1 is fixedly mounted on the frame 6 of the scooter near the wheel. A mounting cavity 10 with an open end is formed on the fixed block 1, with the open end facing the wheel. A limiting part 11 is provided inside the mounting cavity 10, and the brake block 2 is movably mounted inside the mounting cavity 10. One end of the flexible sheath 4 is fixed to the handlebar seat 7 of the scooter, and the other end of the flexible sheath 4 is connected to the brake block 2. The brake core wire 3 is extended and retracted through the flexible sheath 4. The brake block 2 has a flexible sheath 5. The sheath 4 connects to the through hole 22 of the core wire. One end of the brake core wire 3 passes through the handlebar seat 7 of the scooter and is fixed to the brake handle 8. The other end of the brake core wire 3 passes through the through hole 22 of the core wire of the brake block 2 and is fixed to the limiting part 11. One end of the elastic member 5 abuts against the limiting part 11, and the other end of the elastic member 5 abuts against the brake block 2 at the through hole 22 of the core wire. Under the action of external force, the brake handle 8 causes the brake core wire 3 to extend and retract within the flexible sheath 4. The flexible sheath 4 pushes the brake block 2 to extend from the open end of the mounting cavity 10 relative to the brake core wire 3 and abut against the wheel.

[0034] In this embodiment, the fixing block 1 is designed as a sleeve and fits onto the frame 6 of the mobility scooter. It is secured to the frame 6 with bolts or other fasteners, making installation and removal convenient. A mounting cavity 10 protrudes from the fixing block 1, with two open ends: one facing the wheel and the other facing the brake handle 8 of the mobility scooter. This allows the brake block 2 to be installed in the mounting cavity 10 and connected to the handlebar seat 7 of the mobility scooter via a flexible sleeve 4. The brake core wire 3 extends and retracts within the flexible sleeve 4, providing protection for the brake core wire 3 and preventing interference from the external environment, ensuring the stability and reliability of braking operation. One end of the elastic element 5 rests against the limiting part 11, and the other end rests against the brake block 2, providing cushioning and reducing the impact of the brake block 2 on the wheel, while also serving a repositioning function.

[0035] In this embodiment, the flexible sleeve 4 between the brake block 2 and the handle seat 7 is in a bent state by default. When the brake handle 8 pulls the brake core wire 3 under the action of external force, causing the brake core wire 3 to expand and contract within the flexible sleeve 4, the degree of bending of the flexible sleeve 4 between the brake block 2 and the handle seat 7 will decrease, and it will gradually become a straight state as the brake core wire 3 expands and contracts.

[0036] Since one end of the flexible sleeve 4 is fixed to the handlebar seat 7 of the walking aid, and the other end of the flexible sleeve 4 is connected to the brake block 2, and the brake block 2 is movably disposed within the mounting cavity 10, when the bending degree of the flexible sleeve 4 decreases, the other end of the flexible sleeve 4 will push the brake block 2 relative to the brake core wire 3 to extend from the open end of the mounting cavity 10 and abut against the wheel. Because the walking aid does not travel at excessive speeds during use, the brake block 2 in this embodiment acts directly on the wheel, ensuring timely braking response, a simple structure, improved safety, and ease of maintenance.

[0037] like Figure 4 and Figure 5 As shown, the brake block 2 has a hollowed-out center, and the limiting part 11 is located at the hollowed-out position in the center of the brake block 2. The hollowed-out design in the center of the brake block 2 in this embodiment serves two purposes: firstly, it allows for space to be allocated, saving space in the mounting cavity 10 and making the entire braking device more compact; secondly, it reduces the weight of the entire braking device, thereby reducing processing materials and costs.

[0038] like Figures 4 to 6 As shown, it also includes an adjusting bolt 20 and an adjusting nut 21. One end of the brake block 2 has a threaded through hole 23, and the other end of the flexible sleeve 4 is connected to the head of the adjusting bolt 20. The screw of the adjusting bolt 20 extends into the hollow position in the middle of the brake block 2 through the threaded through hole 23. The adjusting nut 21 is set on the screw of the adjusting bolt 20 and is located between the head of the adjusting bolt 20 and the brake block 2.

[0039] In this embodiment, the relative position between the brake block 2 and the wheel can be adjusted by rotating the adjusting bolt 20 and the adjusting nut 21, thereby adjusting the pressure of the brake handle 8. When the brake block 2 needs to be replaced or maintenance is required, the adjusting bolt 20 and the adjusting nut 21 are also easy for the user to install and remove, reducing maintenance costs and making it convenient to use.

[0040] In other embodiments, such as Figure 11 and Figure 12 As shown, an elastic soft sleeve 40 can also be provided at the connection between the other end of the flexible sleeve 4 and the adjusting bolt 20. The soft sleeve 40 is placed on the brake block 2 to cover the adjusting bolt 20, which can effectively prevent external debris such as dust, sand or mud from entering the mounting cavity 10 and improve the stability of the braking device.

[0041] like Figures 4 to 6 As shown, the adjusting bolt 20 has an axial through-hole 22 for the core wire, and the other end of the brake core wire 3 passes through the core wire through-hole 22 of the adjusting bolt 20 and is fixed on the limiting part 11 at the hollow position in the middle of the brake block 2.

[0042] In this embodiment, the brake core wire 3 is directly passed through the core wire through hole 22 of the adjusting bolt 20 and fixed on the limiting part 11. By utilizing the internal space of the adjusting bolt 20, the structure of the entire braking device is more compact and the space utilization rate is improved.

[0043] like Figure 5 and Figure 6 As shown, the other end of the brake core wire 3 is provided with a limiting block 30. The limiting part 11 includes a first convex plate 110 and a second convex plate 111. The first convex plate 110 and the second convex plate 111 are disposed on the cavity wall of the receiving cavity. A limiting groove 112 is formed between the first convex plate 110 and the second convex plate 111. The brake core wire 3 is located in the limiting groove 112. The limiting block 30 abuts against the end of the limiting groove 112 near the wheel.

[0044] In this embodiment, the limiting groove 112 formed between the first convex plate 110 and the second convex plate 111 makes the installation of the other end of the brake core wire 3 more convenient and quick. Simply place the brake core wire 3 in the limiting groove 112. Since one end of the brake core wire 3 is fixed on the brake handle 8 of the scooter, the brake core wire 3 will automatically tighten. As a result, the limiting block 30 at the other end of the brake core wire 3 will be fixed against the end of the limiting groove 112 near the wheel. The structure is simple.

[0045] like Figure 6 As shown, the limiting block 30 is cylindrical, and the first and second protrusions are provided with stepped surfaces 113 that match the cylindrical limiting block 30. The brake core wire 3 is located in the limiting groove 112, and the limiting block 30 abuts against the stepped surface 113.

[0046] In this embodiment, the cooperation between the cylindrical limiting block 30 and the stepped surface 113 ensures the stable position of the brake core wire 3 in the limiting groove 112, reduces the shaking of the brake core wire 3 during braking, improves the stability and reliability of braking, and facilitates installation, removal and maintenance.

[0047] like Figure 4 and Figure 5 As shown, the elastic element 5 is a compression spring 51. The compression spring 51 is sleeved on the brake core wire 3 at the hollow position in the middle of the brake block 2. One end of the compression spring 51 abuts against the end of the limiting groove 112 away from the wheel, and the other end of the compression spring 51 abuts against the brake block 2 at the core wire through hole 22.

[0048] In this embodiment, the elastic element 5 is a compression spring 51, but it is not limited to this. The compression spring 51 can provide elastic buffering during braking. When the brake handle 8 is released, the compression spring 51 can push the brake block 2 to reset, ensuring that the braking device can quickly return to its original state. The structure is simple.

[0049] like Figure 4 and Figure 5 As shown, in this embodiment, the other end of the brake block 2 is provided with a brake plate 24. The width of the brake plate 24 is greater than the width of the brake block 2. When the brake block 2 extends from the open end of the mounting cavity 10 relative to the brake core wire 3, the brake plate 24 abuts against the wheel, which can increase the contact area with the wheel and improve the braking effect of the wheel. In this embodiment, the brake block 2 has a cuboid structure, so the brake plate 24 is plate-shaped. Correspondingly, the mounting cavity 10 has a cuboid shape. In other embodiments, it can also be adjusted according to actual needs.

[0050] like Figures 1 to 4 As shown, it also includes a first housing 14 and a second housing 15. The first housing 14 is formed by protrusion on the fixing block 1. The first housing 14 is provided with a first sliding groove 140 and a second sliding groove 141. The second housing 15 is provided with a first sliding rail 150 and a second sliding rail 151. The first sliding rail 150 and the second sliding rail 151 are respectively slidably placed into the first sliding groove 140 and the second sliding groove 141, so that the first housing 14 is fixed on the second housing 15 to form the mounting cavity 10.

[0051] By using the first slide rail 150 and the second slide rail 151 to cooperate with the first slide groove 140 and the second slide groove 141 respectively, the second housing 15 can be quickly installed on the first housing 14 to form the mounting cavity 10. The structure is simple and easy to install and remove. Since the brake block 2 has a brake plate 24 at the end near the wheel, the length of the first slide groove 140 in this embodiment is less than the length of the second slide groove 141 to make way for it. Correspondingly, the length of the first slide rail 150 is less than the length of the second slide rail 151. In other embodiments, this can also be adjusted according to actual needs.

[0052] In other embodiments, such as Figure 13 and Figure 14 As shown, the first housing 14 and the second housing 15 are evenly provided with multiple layers of ribs 100 at the position located in the mounting cavity 10. After the brake block 2 is installed in the mounting cavity 10, the arrangement of the ribs 100 creates a gap between the brake block 2 and the cavity wall of the mounting cavity 10, which reduces the contact area between the brake block 2 and the cavity wall of the mounting cavity 10. When external debris such as dust, sand, or mud enters the mounting cavity 10, the brake block 2 can slide normally and smoothly, avoiding jamming and improving the stability of the brake.

[0053] like Figures 2 to 6 As shown, it also includes a fastening screw 9. The first housing 14 has a threaded blind hole 142, and the second housing 15 has a screw through hole 152. The fastening screw 9 passes through the screw through hole 152 and cooperates with the threaded blind hole 142 to lock the second housing 15 onto the first housing 14.

[0054] In this embodiment, the fastening screw 9, in conjunction with the threaded blind hole 142, makes the connection between the first housing 14 and the second housing 15 tighter and more stable, which facilitates loading and unloading and also facilitates later maintenance.

[0055] The usage process of this utility model is as follows:

[0056] The user first fixes the fixing block 1 to the frame 6 of the walking aid. The brake core cable 3 is then threaded through the flexible sleeve 4. One end of the flexible sleeve 4 is fixed to the handlebar seat 7 of the walking aid, and the other end of the brake core cable 3 passes through the handlebar seat 7 and is fixed to the brake handle 8. The other end of the flexible sleeve 4 is connected to the brake block 2 via the adjusting bolt 20. The brake block 2 is placed in the mounting cavity 10 of the first housing 14. The other end of the brake core cable 3 passes through the core cable through hole 22 of the adjusting bolt 20 and is fixed to the limiting part 11 at the hollowed-out position in the middle of the brake block 2. Then, the second housing 15 is locked and fixed to the first housing 14 by the fastening screw 9 passing through the screw through hole 152 and engaging with the threaded blind hole 142. This completes the installation.

[0057] In use, the user adjusts the brake handle 8 to a suitable actuation force by adjusting bolt 20 and adjusting nut 21. For example... Figure 9 and Figure 10 As shown, the flexible sleeve 4 between the brake block 2 and the handle seat 7 is in a bent state by default. When the brake handle 8 pulls the brake core wire 3 under the action of external force, causing the brake core wire 3 to expand and contract within the flexible sleeve 4, the degree of bending of the flexible sleeve 4 between the brake block 2 and the handle seat 7 will decrease, and it will gradually become a straight state as the brake core wire 3 expands and contracts.

[0058] Since one end of the flexible sleeve 4 is fixed to the handlebar seat 7 of the walking aid, and the other end of the flexible sleeve 4 is connected to the brake block 2, and the brake block 2 is movably disposed within the mounting cavity 10, when the bending degree of the flexible sleeve 4 decreases, the other end of the flexible sleeve 4 will push the brake block 2 to extend from the open end of the mounting cavity 10 relative to the brake core wire 3. The brake plate 24 on the brake block 2 will then directly abut against the wheel, thereby achieving wheel braking. The directional terms mentioned in this specification are defined relative to the construction shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0059] The above description is only a preferred embodiment of this utility model and is not intended to limit the design of this case. All equivalent changes made based on the key design of this case shall fall within the protection scope of this case.

Claims

1. A braking device for a walking aid, characterized in that: Includes fixed blocks, brake blocks, brake core wires, flexible sheaths, and elastic components; The fixing block is fixedly installed on the frame of the walking aid near the wheel. The fixing block has a protruding mounting cavity with an open end facing the wheel. A limiting part is provided inside the mounting cavity, and the brake block is movably installed inside the mounting cavity. One end of the flexible sheath is fixed to the handlebar seat of the walking aid, and the other end of the flexible sheath is connected to the brake block. The brake core wire is stretched and passed through the flexible sheath. The brake block has a core wire through hole that communicates with the flexible sheath. One end of the brake core wire passes through the handlebar seat of the walking aid and is fixed to the brake handle. The other end of the brake core wire passes out from the core wire through hole of the brake block and is fixed to the limiting part. One end of the elastic element abuts against the limiting part, and the other end of the elastic element abuts against the brake block at the core wire through hole. When the brake lever is subjected to external force, the brake core wire extends and retracts within the flexible sleeve. The flexible sleeve pushes the brake pad to extend from the open end of the mounting cavity relative to the brake core wire and abut against the wheel.

2. The braking device for a walking aid as described in claim 1, characterized in that: The brake block has a hollowed-out center, and the limiting part is located at the hollowed-out position in the center of the brake block.

3. The braking device for a walking aid as described in claim 2, characterized in that: It also includes an adjusting bolt and an adjusting nut. One end of the brake block has a threaded through hole, and the other end of the flexible sheath is connected to the head of the adjusting bolt. The screw of the adjusting bolt extends into the hollow position in the middle of the brake block through the threaded through hole. The adjusting nut is set on the screw of the adjusting bolt and is located between the head of the adjusting bolt and the brake block.

4. The braking device for a walking aid as described in claim 3, characterized in that: The adjusting bolt has an axial through-hole for the core wire, and the other end of the brake core wire passes through the core wire through-hole of the adjusting bolt and is fixed to the limiting part at the hollow position in the middle of the brake block.

5. The braking device for a walking aid as described in claim 4, characterized in that: The other end of the brake core wire is provided with a limiting block. The limiting part includes a first convex plate and a second convex plate. The first convex plate and the second convex plate are disposed on the cavity wall of the receiving cavity. A limiting groove is formed between the first convex plate and the second convex plate. The brake core wire is located in the limiting groove. The limiting block abuts against the end of the limiting groove near the wheel.

6. The braking device for a walking aid as described in claim 5, characterized in that: The limiting block is cylindrical, and the first and second protrusions are provided with stepped surfaces that match the cylindrical limiting block. The brake core wire is located in the limiting groove, and the limiting block abuts against the stepped surface.

7. The braking device for a walking aid as described in claim 5, characterized in that: The elastic element is a compression spring, which is sleeved on the brake core line at the hollow position in the middle of the brake block. One end of the compression spring abuts against the end of the limiting groove away from the wheel, and the other end of the compression spring abuts against the brake block at the through hole of the core line.

8. The braking device for a walking aid as described in claim 2, characterized in that: The other end of the brake block is provided with a brake plate, the width of which is greater than the width of the brake block.

9. The braking device for a walking aid as described in claim 1, characterized in that: It also includes a first housing and a second housing. The first housing is formed by protrusion on the fixing block. The first housing is provided with a first sliding groove and a second sliding groove. The second housing is provided with a first slide rail and a second slide rail. The first slide rail and the second slide rail are respectively slidably placed into the first sliding groove and the second sliding groove, so that the first housing is fixed on the second housing to form the mounting cavity.

10. The braking device for a walking aid as described in claim 9, characterized in that: It also includes fastening screws. The first housing has a threaded blind hole, and the second housing has a screw through hole. The fastening screw passes through the screw through hole and cooperates with the threaded blind hole to lock the second housing onto the first housing.

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