Brake mechanism for wheel type walking aid

Abstract

A brake mechanism for a wheel type walking aid relates to the field of walking aids and comprises a brake block, a brake pad, a brake cable, a brake cable limiting block and a spring, a cavity is formed in the right portion of the rear end of the brake block, a containing groove matched with the brake pad is formed in the bottom of the brake block, the brake pad is located in the containing groove, and the brake pad is located in the containing groove. The right portion of the containing groove is communicated with the cavity, the middle of the brake pad is hinged to the brake block, a limiting plate is arranged on the left portion of the brake block and located above the left portion of the containing groove, the spring is arranged between the right portion of the brake pad and the inner top face of the cavity, and the bottom of the brake cable is connected with the right portion of the brake pad. The brake cable limiting block is connected to the top of the brake block, the brake cable is provided with a limiting part, and the limiting part abuts against the brake cable limiting block when the brake cable is not pulled. When the brake mechanism works, only small force is needed when the brake cable is pulled, and meanwhile abrasion cannot be generated between the brake block and the bicycle pipe.

Description

Technical Field

[0001] The utility model relates to the field of walking assistive devices, in particular to a brake mechanism used on a wheeled walker. Background Art

[0002] A walker is an assistive device used for support, balance and mobility assistance. It is widely used by the elderly, the disabled and those with limited mobility. The patent document of Chinese Patent No. 201921196354.2 discloses a brake device of a foldable walker, which includes a brake cable, a flexible cable tube, a brake pad and a spring. The left frame is provided with a fixing part, which is located at the position of the rear wheel. The end of the brake cable is connected to the fixing part, and the head end of the brake cable is connected to the handle of the brake handle; the brake pad is aligned with the rear wheel, and a sleeve hole and a cable hole are provided on the brake pad. The sleeve hole is for the left frame tube to be sleeved so that the brake pad moves along the left frame tube, and the cable hole is for the brake cable to be sleeved so that the brake cable can be extended and retracted in the brake pad; the brake cable is covered with a spring at the portion between the corresponding fixing part and the brake pad, one end of the spring abuts the fixing part, and the other end of the spring abuts the brake pad, and the brake cable is covered with a flexible cable tube at the portion between the corresponding brake handle and the brake pad, the upper end of the flexible cable tube abuts the brake handle, and the lower end of the flexible cable tube is fixed to the brake pad.

[0003] During use, the brake lever is pulled, causing the handle to rotate relative to the brake handle. This pulls the brake cable outward from the brake, shortening the length of the brake cable within the flexible cable tube, causing the upper end of the flexible cable tube to contract. Subsequently, the lower end of the flexible cable tube returns to its original position, pushing the brake pad to slide along the vehicle tube to brake the rear wheel, thereby completing the braking process. The aforementioned brake device, when braking, moves the entire brake pad along the vehicle tube to brake the rear wheel. This presents several problems: first, greater force is required to move the entire brake pad; second, the brake pad wears the vehicle tube as it moves along the vehicle tube. Utility Model Content

[0004] The utility model provides a brake mechanism for a wheeled walker, the main purpose of which is to overcome the above-mentioned problems existing in the prior art.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A brake mechanism for a wheeled walker comprises a brake block, a brake leather, a brake line, a brake line limit block and a spring, wherein a cavity is provided at the right rear end of the brake block, a placement groove adapted to the brake shoe is provided at the bottom of the brake block, the brake shoe is located in the placement groove, the right part of the placement groove is communicated with the cavity, the middle part of the brake shoe is hinged to the brake block, a limit plate is provided at the left part of the brake block, the limit plate is located above the left part of the placement groove, and when the brake shoe is in a horizontal state, the top surface of its left part contacts the limit plate, the spring is arranged between the right part of the brake shoe and the inner top surface of the cavity, the bottom of the brake line is connected to the right part of the brake shoe, the brake line limit block is connected to the top of the brake block, and the brake line is provided with a limiting portion, and when the brake line is not pulled, the limiting portion contacts the brake line limit block.

[0007] Furthermore, a front hinged ear and a rear hinged ear are formed above the placement groove, an upwardly convex hinged protrusion is provided in the middle of the top surface of the brake pad, a brake pad pin is provided between the front hinged ear and the rear hinged ear, and the brake pad pin passes through the brake pad.

[0008] Furthermore, a downwardly convex contact portion is provided on the left bottom surface of the brake pad, and when the brake cable is pulled up, the contact portion extends out of the bottom surface of the placement groove.

[0009] Furthermore, a threaded section is provided on the bottom surface of the brake line limit block, and a threaded hole connected to the cavity is provided on the upper part of the brake block. The threaded section passes through the threaded hole and is threadedly connected to the threaded hole. The bottom of the threaded section is located in the cavity, and the part of the brake line below the limit part passes through the brake line limit block and the threaded section.

[0010] Furthermore, a receiving groove adapted to the limiting portion is provided on the top of the brake line limiting block, the height of the limiting portion is greater than the height of the receiving groove, and the limiting portion is located in the receiving groove when the brake line is not pulled.

[0011] Furthermore, a spring groove is provided on the right top surface of the brake pad, and the bottom of the spring is located in the spring groove.

[0012] Furthermore, the right end of the brake shoe is provided with a connecting plate fixedly connected to the vehicle pipe.

[0013] As can be seen from the above description of the present invention, compared to the prior art, the present invention has the following advantages: the brake pad is fixedly connected to the wheeled walker's tube. When the brake mechanism needs to be activated, the brake cable is pulled up. When the brake cable is pulled up, the right portion of the brake pad tilts upward, causing the left portion of the brake pad to press downward and contact the rear wheel of the wheeled walker, thereby braking. When the rear wheel of the wheeled walker needs to rotate, the brake cable is released, and the brake pad returns to its original position under the action of the spring, thereby releasing the brake on the rear wheel. When the brake mechanism is activated, the brake cable only needs to drive the brake pad, and the brake pad does not need to move along the tube. This reduces the force required to pull the brake cable, and also reduces wear between the brake pad and the tube, thus maintaining the integrity of the tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of the utility model.

[0015] Figure 2 This is a structural diagram of the utility model from another angle.

[0016] Figure 3 This is a structural exploded view of the present invention.

[0017] Figure 4 This is a structural exploded view of the present invention from another angle. DETAILED DESCRIPTION

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0019] Reference Figures 1 to 4A brake mechanism for a wheeled walker includes a brake block 1, a brake shoe 2, a brake cable 3, a brake cable stopper 4, and a spring 5. A cavity 6 is provided at the right rear end of the brake block 1, and a placement groove 7 is provided at the bottom of the brake block 1 to accommodate the brake block 2. The brake block 2 is positioned within the placement groove 7, the right portion of which communicates with the cavity 6. The middle portion of the brake block 2 is hingedly connected to the brake block 1. A stopper plate 8 is provided at the left portion of the brake block 1, positioned above the left portion of the placement groove 7. When the brake block 2 is horizontal, the top surface of the left portion of the brake block 2 abuts against the stopper plate 8. The spring 5 is positioned between the right portion of the brake shoe 2 and the inner top surface of the cavity 6. The bottom portion of the brake cable 3 is connected to the right portion of the brake shoe 2. The brake cable stopper 4 is connected to the top of the brake block 1. The brake cable 3 is provided with a stopper 31, which abuts against the brake cable stopper 4 when the brake cable 3 is not pulled.

[0020] Reference Figures 1 to 4 A front hinged ear 11 and a rear hinged ear 12 are formed above the placement groove 7. An upwardly convex hinged protrusion 21 is provided in the middle of the top surface of the brake shoe 2. A brake shoe pin 13 is provided between the front hinged ear 11 and the rear hinged ear 12. The brake shoe pin 13 passes through the brake shoe 2, and the brake shoe 2 is hinged to the brake pad 1 via the brake shoe pin 13. A downwardly convex contact portion 22 is provided on the bottom surface of the left portion of the brake shoe 2. When the brake cable 3 is pulled upward, the contact portion 22 extends out of the bottom surface of the placement groove 7.

[0021] Reference Figures 1 to 4 The bottom surface of the brake line stop block 4 is provided with a threaded section 41. The upper portion of the brake shoe 1 is provided with a threaded hole 14 that communicates with the cavity 6. The threaded section 41 passes through the threaded hole 14 and is threadedly connected to the threaded hole 14. The bottom of the threaded section 41 is located in the cavity 6. The portion of the brake line 3 below the limiting portion 31 passes through the brake line stop block 4 and the threaded section 41 and is connected to the right portion of the brake shoe 2. The top of the brake line stop block 4 is provided with a receiving groove 42 that is compatible with the limiting portion 31. The height of the limiting portion 31 is greater than the height of the receiving groove 42. When the brake line 3 is not pulled, the limiting portion 31 is located in the receiving groove 42 and conflicts with the bottom surface of the receiving groove 42. A wire hole 43 for the brake line 3 to pass through is provided from the bottom surface of the receiving groove 42 to the bottom surface of the threaded section 41.

[0022] Reference Figure 2 and Figure 4 A spring groove 23 is provided on the right top surface of the brake pad 2, the bottom of the spring 5 is located in the spring groove 23, the part of the threaded segment 41 that penetrates into the cavity 6 is located in the upper part of the spring 5, and the spring 5 can be stably located between the spring groove 23 and the top surface of the cavity 6.

[0023] Reference Figure 1 and Figure 2 The right end of the brake shoe 1 is provided with a connecting plate 15 fixedly connected to the vehicle pipe. The connecting plate 15 is provided with two locking holes 16 arranged upper and lower. The connecting plate 15 is connected to the vehicle pipe through the locking holes 16 by locking parts such as screws, thereby achieving the fixation of the brake shoe 1 and the vehicle pipe.

[0024] Reference Figures 1 to 4 The design principle of this utility model is as follows: the brake block 1 is fixedly connected to the wheeled walker's vehicle tube. When the brake mechanism needs to be activated, the brake handle pulls up the brake cable 3. This pulls up the right portion of the brake pad 2, causing the left portion of the brake pad 2 to press downward. After the left portion of the brake pad 2 presses downward, the contact portion 22 extends out of the bottom surface of the placement groove 7 and contacts the rear wheel of the wheeled walker, generating braking, thereby completing the braking process. When the rear wheel of the wheeled walker needs to rotate, the brake cable is released, and the brake pad 2 returns to its original position under the action of the spring 5, thereby releasing the brake on the rear wheel.

[0025] The above is only a specific implementation method of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A brake mechanism for a wheeled walker, characterized in that: The brake shoe comprises a brake block, a brake leather, a brake line, a brake line limit block and a spring, a cavity is provided at the right rear end of the brake block, a placement groove adapted to the brake shoe is provided at the bottom of the brake block, the brake shoe is located in the placement groove, the right part of the placement groove is communicated with the cavity, the middle part of the brake shoe is hinged to the brake block, a limit plate is provided at the left part of the brake block, the limit plate is located above the left part of the placement groove, when the brake shoe is in a horizontal state, the top surface of its left part conflicts with the limit plate, the spring is provided between the right part of the brake shoe and the inner top surface of the cavity, the bottom of the brake line is connected to the right part of the brake leather, the brake line limit block is connected to the top of the brake block, the brake line is provided with a limiting part, and the limiting part conflicts with the brake line limit block when the brake line is not pulled.

2. A brake mechanism for a wheeled walker according to claim 1, characterized in that: A front hinged ear and a rear hinged ear are formed above the placement groove, an upwardly convex hinged protrusion is provided in the middle of the top surface of the brake shoe, a brake shoe pin is provided between the front hinged ear and the rear hinged ear, and the brake shoe pin passes through the brake shoe.

3. The brake mechanism for a wheeled walker according to claim 1, wherein: A downwardly convex contact portion is provided on the left bottom surface of the brake shoe, and when the brake wire is pulled upward, the contact portion extends out of the bottom surface of the placement groove.

4. The brake mechanism for a wheeled walker according to claim 1, wherein: A threaded section is provided on the bottom surface of the brake line limit block, and a threaded hole communicating with the cavity is provided on the upper part of the brake block. The threaded section passes through the threaded hole and is threadedly connected to the threaded hole. The bottom of the threaded section is located in the cavity, and the part of the brake line located below the limiting part passes through the brake line limit block and the threaded section.

5. The brake mechanism for a wheeled walker according to claim 1, characterized in that: The top of the brake line limit block is provided with a receiving groove adapted to the limit portion, the height of the limit portion is greater than the height of the receiving groove, and the limit portion is located in the receiving groove when the brake line is not pulled.

6. The brake mechanism for a wheeled walker according to claim 1, wherein: A spring groove is provided on the right top surface of the brake shoe, and the bottom of the spring is located in the spring groove.

7. The brake mechanism for a wheeled walker according to claim 1, wherein: The right end of the brake shoe is provided with a connecting plate fixedly connected to the vehicle pipe.

Images