Locking structure of wheelchair

Abstract

The utility model discloses a locking structure of a wheelchair, and relates to the technical field of wheelchairs. The locking structure of the wheelchair comprises a protective frame and a locking assembly, the locking assembly is arranged on the protective frame and comprises a driven wheel, a driving wheel, a connecting plate and a braking vane, the driven wheel and the driving wheel are rotationally installed on the inner walls of the front side and the rear side of the protective frame, the connecting plate is fixedly installed on the outer wall of the driven wheel, and the braking vane is fixedly installed on one side of the connecting plate. Through cooperative use of a driven wheel, a driving wheel, a connecting plate, a brake plate and a motor 13 and cooperation of a protruding part on the driving wheel and the driven wheel, an automatic brake locking mechanism can be achieved, and when wheels of the wheelchair rotate, the protruding part of the driving wheel can automatically drive the driven wheel to rotate and trigger the clamping action of the brake plate, so that the brake plate is automatically locked. Compared with a traditional manual braking system, the structure does not need additional operation of a user, braking automatically intervenes as long as the wheels move to a certain position, and the use convenience and safety can be improved.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair technology, and in particular to a locking structure for a wheelchair. Background Technology

[0002] A wheelchair is a product that can replace walking. It is often used by patients, people with mobility difficulties, and the elderly. People sit in wheelchairs and move by rolling the wheels on both sides of the wheelchair, which provides great convenience to people's lives. At the same time, the brakes on the wheelchair also play a very important role in the use of the wheelchair. People need to use the brakes to control the wheelchair to stop, so the parking effect of the brakes is extremely important.

[0003] After exploration and analysis, the following drawbacks were found in actual use:

[0004] Existing wheelchair locking mechanisms typically come in two types: manual and electric, without combining the two. Therefore, they cannot flexibly select the drive mode under different environments and needs.

[0005] In summary, this application proposes a locking structure for a wheelchair to solve the aforementioned problems. Utility Model Content

[0006] The purpose of this utility model is to provide a locking structure for wheelchairs that solves the problem that locking structures are usually divided into manual and electric types, without combining the two, thus preventing flexible selection of the drive mode under different environments and needs.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a locking structure for a wheelchair, comprising:

[0008] Protective frame;

[0009] A locking assembly is provided on the protective frame. The locking assembly includes a driven wheel, a driving wheel, a connecting plate, and a brake plate. The driven wheel and the driving wheel are rotatably mounted on the inner walls of the front and rear sides of the protective frame. The connecting plate is fixedly mounted on the outer wall of the driven wheel. The brake plate is fixedly mounted on one side of the connecting plate.

[0010] Preferably, a mounting plate is fixedly installed on the rear side of the protective frame.

[0011] Preferably, the rear side of the mounting plate is provided with a fixed bracket and a movable bracket, and the front side of the fixed bracket is fixedly installed to the rear side of the mounting plate.

[0012] Preferably, the mounting plate has a groove on its rear side, and a sliding block is slidably installed in the groove. The rear side of the sliding block is fixedly installed to the front side of the movable card seat. A spring is fixedly installed on the top of the sliding block, and the other end of the spring is fixedly installed to the top of the inner side of the groove. A damper is provided inside the spring. Designing the movable card seat as a spring card seat provides more convenient locking and unlocking operations. The movable card seat can automatically lock when needed. At the same time, through the action of the spring, the user can easily unlock or adjust the position of the card seat, improving the flexibility and safety of use. This design can also reduce the complexity of manual operation and facilitate the later fixation of the fixed card seat and the movable card seat, ensuring that they will not easily loosen or move during the fixation process.

[0013] Preferably, the locking assembly further includes a motor. The motor is fixedly installed on the front side of the protective frame. The front end of the drive wheel passes through the protective frame and is fixedly installed with the output shaft of the motor. The protrusion of the drive wheel is engaged with the groove of the driven wheel. An opening is provided on the outer wall of the protective frame, and a connecting plate is located in the opening. Through the cooperation between the protrusion on the drive wheel and the driven wheel, an automated braking locking mechanism can be realized. When the wheels of the wheelchair rotate, the protrusion of the drive wheel will automatically drive the driven wheel to rotate and trigger the locking action of the brake plate. Compared with the traditional manual braking system, this structure does not require additional operation by the user. As long as the wheel moves to a certain position, the brake will automatically engage, which helps to improve the convenience and safety of use. At the same time, the locking operation can be carried out by both manual and electric means, which can flexibly select the driving mode under different environments and needs, increasing the reliability of the system.

[0014] Preferably, the outer wall of the protective frame has an opening two, the connecting rod is located at the opening two, one end of the connecting rod is fixedly installed to the outer wall of the drive wheel, and the other end of the connecting rod is fixedly installed with a handle. The structure is simple and easy to operate.

[0015] Preferably, the outer wall of the handle is fixedly fitted with anti-slip texture to prevent slipping.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) The locking structure of this wheelchair, through the cooperation of the driven wheel, the driving wheel, the connecting plate and the brake plate, can realize an automatic brake locking mechanism by the cooperation of the protrusion on the driving wheel with the driven wheel. When the wheelchair wheel rotates, the protrusion of the driving wheel will automatically drive the driven wheel to rotate and trigger the locking action of the brake plate. Compared with the traditional manual braking system, this structure does not require additional operation by the user. As long as the wheel moves to a certain position, the brake will automatically intervene, which helps to improve the convenience and safety of use. The locking work can be carried out by both manual and electric means, and the driving mode can be flexibly selected under different environments and needs, which increases the reliability of the system.

[0018] (2) The locking structure of the wheelchair uses a combination of a fixed bracket, a movable bracket, a sliding block and a spring. The movable bracket is designed as a spring bracket to provide more convenient locking and unlocking operations. The movable bracket can automatically lock when needed. At the same time, through the action of the spring, the user can easily unlock or adjust the position of the bracket, improving the flexibility and safety of use. This design can also reduce the complexity of manual operation and facilitate the later fixing of the fixed bracket and the movable bracket, ensuring that they will not easily loosen or move during the fixing process. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 The three-dimensional representation of this utility model Figure 1 ;

[0021] Figure 2 The three-dimensional representation of this utility model Figure 2 ;

[0022] Figure 3 This is a perspective view of the driven wheel and the driving wheel of this utility model;

[0023] Figure 4 This is a three-dimensional sectional view of the present invention.

[0024] Reference numerals in the attached drawings: 1. Protective frame; 2. Mounting plate; 3. Fixed bracket; 4. Movable bracket; 5. Sliding block; 6. Spring; 7. Driven wheel; 8. Driving wheel; 9. Connecting plate; 10. Brake plate; 11. Connecting rod; 12. Handle; 13. Motor. Detailed Implementation

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Please see Figure 1-4 This utility model provides a technical solution: a locking structure for a wheelchair, including a protective frame 1 and a locking assembly. The locking assembly is disposed on the protective frame 1 and includes a driven wheel 7, a driving wheel 8, a connecting plate 9 and a brake plate 10. The driven wheel 7 and the driving wheel 8 are rotatably mounted on the inner walls of the front and rear sides of the protective frame 1. The connecting plate 9 is fixedly mounted on the outer wall of the driven wheel 7, and the brake plate 10 is fixedly mounted on one side of the connecting plate 9.

[0027] Furthermore, a mounting plate 2 is fixedly installed on the rear side of the protective frame 1.

[0028] Furthermore, a fixed bracket 3 and a movable bracket 4 are provided on the rear side of the mounting plate 2, with the front side of the fixed bracket 3 being fixedly installed to the rear side of the mounting plate 2.

[0029] Furthermore, a sliding groove is provided on the rear side of the mounting plate 2, and a sliding block 5 is slidably installed in the groove. The rear side of the sliding block 5 is fixedly installed to the front side of the movable bracket 4. A spring 6 is fixedly installed on the top of the sliding block 5, and the other end of the spring 6 is fixedly installed to the top of the inner side of the sliding groove. A damper is provided inside the spring 6. It is fixed to the wheelchair by the fixed bracket 3 and the movable bracket 4. Pulling the movable bracket 4 upward will lock the fixed bracket 3 and the movable bracket 4 into the crossbar of the wheelchair. The reaction force of the spring 6 will drive the sliding block 5 downward, thereby driving the movable bracket 4 downward, which will affect the crossbar. The brake plate 10 is moved and adjusted according to the position of the wheel. The fixed bracket 3 and the movable bracket 4 are then fixed with bolts. The movable bracket 4 is designed as a spring bracket, which provides more convenient locking and unlocking operations. The movable bracket 4 can automatically lock when needed. At the same time, through the action of the spring, the user can easily unlock or adjust the position of the bracket, improving the flexibility and safety of use. This design can also reduce the complexity of manual operation and facilitate the later fixing of the fixed bracket 3 and the movable bracket 4, ensuring that they will not easily loosen or move during the fixing process.

[0030] Furthermore, the locking assembly also includes a motor 13. The motor 13 is fixedly mounted on the front side of the protective frame 1. The front end of the drive wheel 8 passes through the protective frame 1 and is fixedly mounted to the output shaft of the motor 13. The protrusion of the drive wheel 8 is engaged with the groove of the driven wheel 7. An opening is provided on the outer wall of the protective frame 1, and the connecting plate 9 is located within the opening. By engaging the protrusion on the drive wheel 8 with the driven wheel 7, pressing down on the handle 12 causes the connecting rod 11 to rotate the drive wheel 8. This rotation of the drive wheel 8 then rotates the driven wheel 7, which in turn rotates the connecting rod 11. The brake plate 10 on plate 9 contacts the outer wall of the wheel, enabling an automated brake locking mechanism. When the wheelchair wheels rotate, the protrusion of the drive wheel 8 automatically drives the driven wheel 7 to rotate, triggering the locking action of the brake plate 10. Compared with the traditional manual braking system, this structure does not require additional operation by the user. As long as the wheel moves to a certain position, the brake will automatically engage, which helps to improve the convenience and safety of use. At the same time, the locking operation can be carried out by both manual and electric means, which can flexibly select the drive mode under different environments and needs, increasing the reliability of the system.

[0031] Secondly, the outer wall of the protective frame 1 has an opening 2, and the connecting rod 11 is located at the opening 2. One end of the connecting rod 11 is fixedly installed to the outer wall of the drive wheel 8, and the other end of the connecting rod 11 is fixedly installed with a handle 12. The structure is simple and easy to operate.

[0032] Secondly, the outer wall of the handle 12 is fixedly fitted with anti-slip texture to prevent slipping. The motor 13 is connected to the controller via a connecting wire, and the controller is installed on the wheelchair.

[0033] Working principle: In use, the wheelchair is fixed to the wheelchair using the fixed bracket 3 and the movable bracket 4. Pulling the movable bracket 4 upwards locks the fixed bracket 3 and the movable bracket 4 into place at the crossbar of the wheelchair. The reaction force of the spring 6 drives the sliding block 5 downwards, which in turn drives the movable bracket 4 downwards to clamp the crossbar. The position of the brake plate 10 is adjusted according to the position of the wheel. The fixed bracket 3 and the movable bracket 4 are then fixed with bolts. When the wheelchair needs to be locked, the handle 12 is pressed down, causing the connecting rod 11 to drive the drive wheel 8 to rotate. Alternatively, the motor 13 can be started, which drives the drive wheel 8 to rotate. The rotation of the drive wheel 8 then drives the driven wheel 7 to rotate, causing the brake plate 10 on the connecting plate 9 to contact the outer wall of the wheel, thus limiting and fixing it.

[0034] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model 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 present utility model.

Claims

1. A locking structure for a wheelchair, characterized in that, include: Protective frame (1); The locking assembly is mounted on the protective frame (1). The locking assembly includes a driven wheel (7), a driving wheel (8), a connecting plate (9), and a brake plate (10). The driven wheel (7) and the driving wheel (8) are rotatably mounted on the inner walls of the front and rear sides of the protective frame (1). The connecting plate (9) is fixedly mounted on the outer wall of the driven wheel (7). The brake plate (10) is fixedly mounted on one side of the connecting plate (9).

2. The locking structure for a wheelchair according to claim 1, characterized in that: An mounting plate (2) is fixedly installed on the rear side of the protective frame (1).

3. The locking structure for a wheelchair according to claim 2, characterized in that: The mounting plate (2) is provided with a fixed bracket (3) and a movable bracket (4) on its rear side. The front side of the fixed bracket (3) is fixedly installed with the rear side of the mounting plate (2).

4. The locking structure for a wheelchair according to claim 3, characterized in that: The mounting plate (2) has a groove on its rear side, and a sliding block (5) is slidably installed in the groove. The rear side of the sliding block (5) is fixedly installed with the front side of the movable card seat (4). A spring (6) is fixedly installed on the top of the sliding block (5), and the other end of the spring (6) is fixedly installed with the top of the inner side of the groove. A damper is provided inside the spring (6).

5. The locking structure for a wheelchair according to claim 4, characterized in that: The locking assembly also includes a motor (13). The motor (13) is fixedly installed on the front side of the protective frame (1). The front end of the drive wheel (8) passes through the protective frame (1) and is fixedly installed with the output shaft of the motor (13). The protrusion of the drive wheel (8) is snapped into the groove of the driven wheel (7). An opening is provided on the outer wall of the protective frame (1), and the connecting plate (9) is located in the opening.

6. The locking structure for a wheelchair according to claim 5, characterized in that: The outer wall of the protective frame (1) has an opening two, and the connecting rod (11) is located at the opening two. One end of the connecting rod (11) is fixedly installed on the outer wall of the drive wheel (8), and the other end of the connecting rod (11) is fixedly installed with a handle (12).

7. The locking structure for a wheelchair according to claim 6, characterized in that: The outer wall of the handle (12) is fixedly fitted with anti-slip texture.

Images