Handle brake of electric wheelchair

Abstract

The utility model relates to the technical field of handle brakes, in particular to an electrically powered wheelchair handle brake which comprises a brake box, a handle is installed at the bottom of the brake box, a connecting block is installed on the side wall of the handle, an extension handle is installed on the side wall of the connecting block, a placing block is fixed to the bottom of the brake box, and the placing block is fixed to the bottom of the brake box. A movable groove is formed in the bottom of the placing block, the movable groove is an arc-shaped groove, and a movable clamping block is installed in the movable groove; the electric wheelchair handle brake has the advantages that the connecting block, the extension handle, the placing block and the movable connecting block can be used in cooperation, the extension handle is fixed to the side wall of the connecting block and is flush with the handle, one end of the extension handle drives the connecting block to move when moving, and therefore the handle is driven to move; the movable connecting rod moves in the movable groove through the movable clamping block to provide a connecting and supporting effect for the connecting block, and then a user can conveniently control braking and walking of the wheelchair.

Description

Technical Field

[0001] This utility model relates to the field of handle brakes, specifically an electric wheelchair handle brake. Background Technology

[0002] The electric wheelchair handle brake is a device that controls the braking system of an electric wheelchair through handle operation. It has the advantages of high stability, strong safety and easy operation. This brake plays a vital role in electric wheelchairs and is directly related to the safety of users.

[0003] One existing type of electric wheelchair handle brake often has a problem: the handle is too short, making it difficult for some users to grip it. This makes it difficult for users to quickly brake the wheelchair in an emergency. Common extension handles are simply slipped off the handle and are not easy to secure to prevent the handle from slipping, thus affecting the braking effect.

[0004] Therefore, this utility model proposes an electric wheelchair handle brake to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide an electric wheelchair handle brake to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an electric wheelchair handle brake, the electric wheelchair handle brake comprising: a brake box, a handle installed at the bottom of the brake box, a connecting block installed on the side wall of the handle, and an extension handle installed on the side wall of the connecting block;

[0007] The bottom of the brake box is fixed with a mounting block, and the bottom of the mounting block is provided with a movable groove. The movable groove is an arc-shaped groove, and a movable locking block is installed inside the movable groove. A movable connecting rod is installed at the bottom of the movable locking block, and the other end of the movable connecting rod is movably installed on one side of the connecting block.

[0008] Preferably, the side wall of the connecting block has an elongated groove, a fixed rod is fixed through the center of the elongated groove, the handle is located inside the elongated groove, the side wall of the connecting block has a recess, one end of the movable connecting rod is located inside the recess, and the elongated groove and the recess are located on opposite surfaces.

[0009] Preferably, a rotating block is installed through the top of the connecting block, and the bottom of the rotating block penetrates the interior of the movable connecting rod and is fixedly connected to one end of the movable connecting rod.

[0010] Preferably, the outer surface of the rotating block is fitted with teeth, which are located on the top of the connecting block.

[0011] Preferably, a fixing bolt is fixed to the top of the connecting block, and a set of retaining rings are installed around the outer surface of the fixing bolt. The retaining rings are movable open semi-circular rings, and the inner side of the retaining rings can mesh with the teeth. A spring is connected and installed on the inner side of the retaining rings.

[0012] Preferably, each retaining ring has a connecting rod installed on its top, a fixing block installed at one end of the connecting rod, and a movable rod installed through the center of the fixing block.

[0013] Preferably, the top of the extension handle is provided with a movable groove, and a threaded rod is installed inside the movable groove, the threaded rod passing through the bottom of the movable rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The electric wheelchair handle brake proposed in this utility model can be used in conjunction with a connecting block, an extension handle, a mounting block, and a movable connecting block. The extension handle is fixed to the side wall of the connecting block and is flush with the handle. When one end of the extension handle moves, it drives the connecting block to move, thereby enabling the handle to move. The movable connecting rod moves in the movable slot through a movable locking block to provide connection support to the connecting block, thus facilitating the user's control of the wheelchair's braking and movement. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the extension handle adjustment of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the transmission connection mounting block of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the retaining ring fixing of this utility model.

[0020] In the diagram: 1. Brake box; 2. Handle; 3. Connecting block; 4. Long slot; 5. Fixing rod; 6. Groove;

[0021] 7. Movable connecting rod; 8. Movable locking block; 9. Placing block; 10. Movable groove; 11. Rotating block; 12. Tooth; 13. Fixing bolt; 14. Snap ring; 15. Spring; 16. Connecting rod; 17. Fixing block; 18. Movable rod; 19. Moving groove; 20. Threaded rod; 21. Extension handle. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Example 1

[0024] Please see Figures 1-4 This utility model provides a technical solution: an electric wheelchair handle brake, the electric wheelchair handle brake includes: a brake box 1, a handle 2 installed at the bottom of the brake box 1, a connecting block 3 installed on the side wall of the handle 2, and an extension handle 21 installed on the side wall of the connecting block 3;

[0025] A mounting block 9 is fixed to the bottom of the brake box 1. A movable groove 10 is provided at the bottom of the mounting block 9. The movable groove 10 is an arc-shaped groove. A movable locking block 8 is installed inside the movable groove 10. A movable connecting rod 7 is installed at the bottom of the movable locking block 8. The other end of the movable connecting rod 7 is movably installed on one side of the connecting block 3.

[0026] The side wall of the connecting block 3 has a long groove 4, and a fixing rod 5 is fixed through the center of the long groove 4. The handle 2 is located inside the long groove 4. The side wall of the connecting block 3 has a groove 6, and one end of the movable connecting rod 7 is located inside the groove 6. The long groove 4 and the groove 6 are located on opposite surfaces.

[0027] In use, the mounting block 9 is fixed to the brake box 1, and the connecting block 3 moves through the inside of the handle 2 via the fixing rod 5 inside the long groove 4. One end of the movable connecting rod 7 is movably installed inside the groove 6 via the rotating block 11, and the other end of the movable connecting rod 7 moves in the movable groove 10 of the mounting block 9 via the movable locking block 8. The extension handle 21 is fixed to the side wall of the connecting block 3 and is flush with the handle 2, so that when one end of the extension handle 21 moves, it drives the connecting block 3 to move, thereby driving the handle 2 to move. The movable connecting rod 7 moves in the movable groove 10 via the movable locking block 8 to provide connection support for the connecting block 3, thereby facilitating the control of the wheelchair's braking and movement.

[0028] Example 2

[0029] Based on Embodiment 1, in order to facilitate the movement of the handle 2 and avoid slippage between the extension handle 21 and the handle 2 affecting the braking effect of the brake, a rotating block 11 is installed through the top of the connecting block 3, and the bottom of the rotating block 11 passes through the interior of the movable connecting rod 7 and is fixedly connected to one end of the movable connecting rod 7. The outer surface of the rotating block 11 is equipped with teeth 12, which are located at the top of the connecting block 3. A fixing bolt 13 is fixed at the top of the connecting block 3, and a set of retaining rings 14 are installed around the outer surface of the fixing bolt 13. The retaining rings 14 are movable open semi-circular rings, and the inner side of the retaining rings 14 can mesh with the teeth 12. A spring 15 is connected and installed on the inner side of the retaining rings 14.

[0030] In use, the rotating block 11 facilitates the rotation of the movable connecting rod 7. The teeth 12 at the top of the rotating block 11 mesh with the inside of the retaining ring 14, increasing the contact surface between the retaining ring 14 and the rotating block 11 and increasing the friction. The retaining ring 14, under the constant inward pulling force provided by the spring 15, can tightly mesh with the teeth 12, preventing the rotating block 11 from rotating. This prevents the extension handle 21 and the handle 2 from slipping, enhances the accidental contact of the handle 2, and improves the safety of the wheelchair.

[0031] Example 3

[0032] Based on Embodiment 2, in order to facilitate the opening and closing of the retaining ring 14, a connecting rod 16 is installed on the top of the retaining ring 14. A fixing block 17 is installed at one end of the connecting rod 16. A movable rod 18 is installed through the center of the fixing block 17. A moving groove 19 is opened on the top of the extension handle 21. A threaded rod 20 is installed inside the moving groove 19. The threaded rod 20 passes through the bottom of the movable rod 18.

[0033] In use, the movable rod 18 can move left and right along the outer surface of the threaded rod 20 in the moving groove 19 through the action of the threaded rod 20, thereby driving the fixed block 17 to move left and right. At the same time, the top of the fixed block 17 can pull the opening and closing of the retaining ring 14 through the connecting rod 16. As the fixed block 17 moves away from the rotating block 11, it can drive the retaining ring 14 to open. As the fixed block 17 moves closer to the rotating block 11, it can drive the retaining ring 14 to close under the action of the spring 15.

[0034] In actual use, the mounting block 9 is fixed to the brake box 1. The connecting block 3 passes through the handle 2 via the fixing rod 5 inside the long groove 4. One end of the movable connecting rod 7 is movably installed inside the groove 6 via the rotating block 11. The other end of the movable connecting rod 7 moves within the movable groove 10 of the mounting block 9 via the movable locking block 8. The extension handle 21 is fixed to the side wall of the connecting block 3 and is flush with the handle 2. When one end of the extension handle 21 moves, it drives the connecting block 3 to move, thereby enabling the handle 2 to move. The movable connecting rod 7 moves within the movable groove 10 via the movable locking block 8 to provide connection support for the connecting block 3, thus facilitating the control of the wheelchair's braking and movement. The teeth 12 at the top of the rotating block 11 engage with the inside of the retaining ring 14, increasing the connection between the retaining ring 14 and the rotating block 11. The contact surface can also increase friction. The retaining ring 14, under the constant inward contraction force provided by the spring 15, can tightly engage with the teeth 12. The movable rod 18 can move left and right along the outer surface of the threaded rod 20 in the moving groove 19 through the action of the threaded rod 20, thereby driving the fixed block 17 to move left and right. At the same time, the top of the fixed block 17 can pull the opening and closing of the retaining ring 14 through the connecting rod 16. As the fixed block 17 moves away from the rotating block 11, it can drive the retaining ring 14 to open. As the fixed block 17 moves closer to the rotating block 11, it can drive the retaining ring 14 to close under the action of the spring 15, preventing the rotating block 11 from rotating. This can prevent the extension handle 21 and the handle 2 from slipping, enhance the accidental contact of the handle 2, and improve the safety of the wheelchair.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A handle brake for an electric wheelchair, characterized in that: The electric wheelchair handle brake includes: a brake box (1), a handle (2) installed at the bottom of the brake box (1), a connecting block (3) installed on the side wall of the handle (2), and an extension handle (21) installed on the side wall of the connecting block (3). The brake box (1) has a mounting block (9) fixed at the bottom. The mounting block (9) has a movable groove (10) at the bottom. The movable groove (10) is an arc-shaped groove. A movable locking block (8) is installed inside the movable groove (10). A movable connecting rod (7) is installed at the bottom of the movable locking block (8). The other end of the movable connecting rod (7) is movably installed on one side of the connecting block (3).

2. The electric wheelchair handle brake according to claim 1, characterized in that: The side wall of the connecting block (3) is provided with a long groove (4), and a fixing rod (5) is fixed through the center of the long groove (4). The handle (2) is located inside the long groove (4). The side wall of the connecting block (3) is provided with a groove (6), and one end of the movable connecting rod (7) is located inside the groove (6). The long groove (4) and the groove (6) are located on opposite surfaces.

3. The electric wheelchair handle brake according to claim 1, characterized in that: The top of the connecting block (3) is fitted with a rotating block (11), and the bottom of the rotating block (11) passes through the interior of the movable connecting rod (7) and is fixedly connected to one end of the movable connecting rod (7).

4. The electric wheelchair handle brake according to claim 3, characterized in that: The outer surface of the rotating block (11) is fitted with teeth (12), which are located on top of the connecting block (3).

5. The electric wheelchair handle brake according to claim 1, characterized in that: The top of the connecting block (3) is fixed with a fixing bolt (13), and a set of retaining rings (14) are installed around the outer surface of the fixing bolt (13). The retaining rings (14) are movable open semi-circular rings. The inner side of the retaining rings (14) can mesh with the teeth (12). A spring (15) is connected to the inner side of the retaining rings (14).

6. The electric wheelchair handle brake according to claim 5, characterized in that: Each of the retaining rings (14) has a connecting rod (16) installed on its top. A fixing block (17) is installed at one end of the connecting rod (16), and a movable rod (18) is installed through the center of the fixing block (17).

7. The electric wheelchair handle brake according to claim 1, characterized in that: The top of the extension handle (21) is provided with a moving groove (19), and a threaded rod (20) is installed inside the moving groove (19). The threaded rod (20) passes through the bottom of the movable rod (18).

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