Wheelchair front fork assembly structure

Abstract

The utility model discloses a wheelchair front fork assembly structure, which belongs to the field of wheelchair accessories and comprises a front fork main body. An adjustable damping mechanism used for conveniently adjusting the damping performance of different road conditions in the stroke is installed on the front fork body. The adjustable damping mechanism is provided with a convenient installation mechanism which is convenient for a user to quickly replace the installation device. The adjustable damping mechanism comprises a damping assembly, a limiting assembly and a damping adjusting assembly. The front fork body and the limiting assembly are connected with the damping assembly. The front fork body, the convenient installation mechanism and the damping adjusting assembly are connected with the limiting assembly. The damping assembly is used for damping the front fork body. The limiting assembly is used for limiting the damping adjusting assembly, and the damping adjusting assembly is used for adjusting the damping amplitude. By means of the mode, the shock absorption effect required by different road conditions can be achieved when the shock absorption device is used, the comfort of a user is met, and the user can save more labor.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair accessories, specifically to a wheelchair front fork assembly structure. Background Technology

[0002] The wheelchair front fork assembly is the core component of the wheelchair front wheel system, mainly consisting of the fork body, steering shaft, bearings, and connecting parts. It is responsible for supporting the front wheel and enabling flexible steering. Its structure is typically made of high-strength aluminum alloy or steel, balancing lightweight design and durability. Some high-end models integrate shock absorption devices to improve stability on complex road conditions. The front fork connects to the frame via precision bearings, ensuring smooth steering with low friction, while also bearing some load distribution, directly affecting the wheelchair's maneuverability, safety, and comfort. Regular maintenance, including bearing lubrication and tightening of fasteners, is crucial for extending its service life.

[0003] Chinese patent CN218833044U discloses an adjustable electric wheelchair front fork, including an adjustable front fork stem and a front fork body. The adjustable front fork stem has an external thread at its bottom, and the front fork body has an external thread at its top. The adjustable front fork stem and the front fork body are connected by the engagement of the external and internal threads. The adjustable front fork stem is a cylindrical tube structure, comprising an outer tube, an inner tube, a shock-absorbing component, and a base. The inner tube is fitted inside the outer tube and is telescopically connected to it. The lower part of the inner tube is located within the base, and its bottom end is connected to the inner wall of the base bottom end via the shock-absorbing component. This adjustable electric wheelchair front fork uses external and internal threads to connect the adjustable front fork stem to the front fork body, resulting in a simpler structure and easier maintenance. The height of the adjustable front fork stem can be adjusted, and the shock-absorbing component provides a certain degree of shock absorption, improving the stability of the front fork. However, this device still has the following problems:

[0004] When faced with different road conditions, this device can only achieve a constant shock absorption effect. If the shock absorption elasticity is good, the user will have to exert more effort on a flat road. If the shock absorption elasticity is stiff, the user will have a poor experience on a bumpy road, and the front fork will be easily damaged.

[0005] Based on this, the present invention designs a wheelchair front fork assembly structure to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a wheelchair front fork assembly structure.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A wheelchair front fork assembly structure, including a front fork body;

[0009] The fork body is equipped with an adjustable damping mechanism for convenient adjustment of damping performance according to different road conditions during the stroke;

[0010] The adjustable shock absorption mechanism is equipped with a convenient installation mechanism for users to quickly replace the installation device.

[0011] The adjustable shock absorption mechanism includes a shock absorption component, a limiting component, and a shock absorption adjustment component; the fork body and the limiting component are both connected to the shock absorption component, and the fork body, the convenient installation mechanism, and the shock absorption adjustment component are all connected to the limiting component; the shock absorption component is used to absorb shock for the fork body; the limiting component is used to limit the shock absorption adjustment component, and the shock absorption adjustment component is used to adjust the shock absorption amplitude;

[0012] Furthermore, the shock absorption assembly includes a shock absorption spring and a shock absorber; the lower end of the shock absorber is fixedly connected to the upper end of the fork body, the shock absorption spring is sleeved on the outside of the shock absorber and fixedly connected to the shock absorber, and the lower end of the shock absorption spring is fixedly connected to the upper end of the fork body; the upper ends of both the shock absorption spring and the shock absorber are connected to a limiting assembly.

[0013] Furthermore, the limiting component includes a limiting rod and a limiting plate; the two limiting rods are symmetrically arranged left and right, and the lower end of the limiting rod is fixedly connected to the upper end of the front fork body; the upper end of the limiting rod is slidably connected to the limiting plate, and both the limiting rod and the limiting plate are connected to the shock absorption adjustment component; the limiting plate is connected to the convenient installation mechanism; the upper end of the shock absorption spring is fixedly connected to the limiting plate, and the limiting plate is fixedly connected to the upper end of the shock absorber.

[0014] Furthermore, the shock absorption adjustment assembly includes a screw, a nut, and a limiting shaft; the lower end of the screw is fixedly connected to the upper end of a limiting rod; the nut is threadedly connected to the screw, and the lower end of the nut is fixedly installed with a limiting shaft, the lower end of the limiting shaft abutting against a limiting plate; the limiting shaft is sleeved on the outer side of the upper end of the limiting rod.

[0015] Furthermore, the convenient installation mechanism includes a rotating component, a mounting component, a convenient installation component, and a mounting fixing component; both the fork body and the mounting component are connected to the rotating component; the convenient installation component is connected to the mounting component; the mounting fixing component is connected to the convenient installation component; the rotating component provides steering capability for the device; the mounting component reduces wear on the rotating component; the convenient installation component facilitates the replacement of the rotating component and the mounting component; and the mounting fixing component secures the convenient installation component.

[0016] Furthermore, the rotating assembly includes a mounting block and a rotating shaft; the lower end of the mounting block is fixedly connected to a limiting plate, the lower end of the rotating shaft is rotatably connected to the mounting block, and the rotating shaft is connected to the mounting assembly.

[0017] Furthermore, the mounting assembly includes a fixing block and a bearing; the lower end of the fixing block is fixedly connected to the upper end of the rotating shaft, the bearing is sleeved on the outside of the rotating shaft, and the bearing is rotatably connected to the rotating shaft; the fixing block is connected to the convenient mounting assembly.

[0018] Furthermore, the convenient installation component includes a pin block and a pin shaft; a slot is provided on the fixing block; the pin block is inserted into the fixing block through the slot; the pin shaft is slidably connected to the pin block; both the pin block and the pin shaft are connected to the installation and fixing component.

[0019] Compared with the prior art, the advantages of this utility model are as follows: 1. This utility model can achieve the required shock absorption effect for different road conditions during use, satisfy the user's comfort, and make the user more effortless;

[0020] 2. This utility model enables patients to quickly replace the device through a convenient installation structure. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This utility model provides a three-dimensional view of a wheelchair front fork assembly structure. Figure 1 ;

[0023] Figure 2 This is a front view of a wheelchair front fork assembly structure according to the present invention;

[0024] Figure 3 This utility model provides a three-dimensional view of a wheelchair front fork assembly structure. Figure 2 ;

[0025] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0026] The labels in the diagram represent:

[0027] 1. Front fork body; 2. Adjustable shock absorption mechanism; 21. Shock absorption assembly; 211. Shock absorption spring; 212. Shock absorber; 22. Limiting assembly; 221. Limiting rod; 222. Limiting plate; 23. Shock absorption adjustment assembly; 231. Screw; 232. Nut; 233. Limiting shaft; 3. Convenient installation mechanism; 31. Rotating assembly; 311. Mounting block; 312. Rotating shaft; 32. Installation assembly; 321. Fixing block; 322. Bearing; 33. Convenient installation assembly; 331. Pin block; 332. Pin shaft; 34. Installation and fixing assembly; 341. Locking spring; 342. Fixing frame; 343. Pull block. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0030] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-4 A wheelchair front fork assembly structure, including a front fork body 1;

[0031] The fork body 1 is equipped with an adjustable damping mechanism 2 for convenient adjustment of damping performance according to different road conditions during the stroke;

[0032] The adjustable shock absorption mechanism 2 is equipped with a convenient installation mechanism 3 for users to quickly replace the installation device.

[0033] The adjustable shock absorption mechanism 2 includes a shock absorption component 21, a limiting component 22, and a shock absorption adjustment component 23; the fork body 1 and the limiting component 22 are both connected to the shock absorption component 21, and the fork body 1, the convenient installation mechanism 3, and the shock absorption adjustment component 23 are all connected to the limiting component 22; the shock absorption component 21 is used to absorb shock for the fork body 1; the limiting component 22 is used to limit the shock absorption adjustment component 23, and the shock absorption adjustment component 23 is used to adjust the shock absorption amplitude;

[0034] In this invention, the operator adjusts the shock absorption performance of the shock absorption component 21 according to the road conditions to be traveled. If the road ahead is mostly flat, the shock absorption performance is reduced to make pushing easier; if the road ahead is mostly bumpy, the shock absorption performance is increased to ensure the patient's comfort. The operator can adjust the shock absorption performance of the shock absorption component 21 by adjusting the shock absorption adjustment component 23 to move under the limit of the limiting component 22. Since the front fork assembly is a wear part, when the device is damaged, the user can easily replace it through the convenient installation mechanism 3, avoiding the inconvenience of user operation in replacing it.

[0035] The shock absorption assembly 21 includes a shock absorption spring 211 and a shock absorber 212; the lower end of the shock absorber 212 is fixedly connected to the upper end of the fork body 1, the shock absorption spring 211 is sleeved on the outside of the shock absorber 212, and the lower end of the shock absorption spring 211 is fixedly connected to the upper end of the fork body 1; the upper ends of both the shock absorption spring 211 and the shock absorber 212 are connected to the limiting assembly 22.

[0036] The limiting component 22 includes a limiting rod 221 and a limiting plate 222; the two limiting rods 221 are symmetrically arranged on the left and right, and the lower end of the limiting rod 221 is fixedly connected to the upper end of the front fork body 1; the upper end of the limiting rod 221 is slidably connected to the limiting plate 222, and both the limiting rod 221 and the limiting plate 222 are connected to the shock absorption adjustment component 23; the limiting plate 222 is connected to the convenient installation mechanism 3; the upper end of the shock absorption spring 211 is fixedly connected to the limiting plate 222, and the limiting plate 222 is fixedly connected to the upper end of the shock absorber 212;

[0037] The shock absorption adjustment assembly 23 includes a screw 231, a nut 232, and a limiting shaft 233; the lower end of the screw 231 is fixedly connected to the upper end of a limiting rod 221; the nut 232 is threadedly connected to the screw 231, and the lower end of the nut 232 is fixedly installed with the limiting shaft 233, the lower end of the limiting shaft 233 abuts against the limiting plate 222; the limiting shaft 233 is sleeved on the outer side of the upper end of the limiting rod 221.

[0038] In this invention, when increased shock absorption is required, the user turns the nut 232, causing it to rotate and move upward along the screw 231. This causes the nut 232 to move upward by driving the lower end of the limiting shaft 233. At this time, the shock-absorbing spring 211 and the shock absorber 212 push the limiting plate 222 upward along the limiting rod 221, thus increasing the stroke of the shock-absorbing spring 211 and the shock absorber 212 and completing the adjustment to increase the shock absorption performance. When decreased shock absorption is required, the user simply turns the nut 232 in the opposite direction, causing it to move downward along the screw 231. The nut 232 drives the limiting plate 222 to slide downward along the limiting rod 221 via the limiting shaft 233, thus decreasing the stroke of the shock-absorbing spring 211 and the shock absorber 212 and completing the adjustment to decrease the shock absorption performance.

[0039] The convenient installation mechanism 3 includes a rotating component 31, a mounting component 32, a convenient installation component 33, and a mounting and fixing component 34; both the fork body 1 and the mounting component 32 are connected to the rotating component 31; the convenient installation component 33 is connected to the mounting component 32; the mounting and fixing component 34 is connected to the convenient installation component 33; the rotating component 31 provides steering capability for the device; the mounting component 32 reduces wear on the rotating component 31; the convenient installation component 33 facilitates the replacement of the rotating component 31 and the mounting component 32; and the mounting and fixing component 34 secures the convenient installation component 33.

[0040] The rotating assembly 31 includes a mounting block 311 and a rotating shaft 312; the lower end of the mounting block 311 is fixedly connected to the limiting plate 222, the lower end of the rotating shaft 312 is rotatably connected to the mounting block 311, and the rotating shaft 312 is connected to the mounting assembly 32.

[0041] The mounting assembly 32 includes a fixing block 321 and a bearing 322; the lower end of the fixing block 321 is fixedly connected to the upper end of the rotating shaft 312, and the bearing 322 is sleeved on the outside of the rotating shaft 312 and is rotatably connected to the rotating shaft 312; the fixing block 321 is connected to the convenient mounting assembly 33.

[0042] The convenient installation component 33 includes a pin block 331 and a pin shaft 332; a slot is provided on the fixing block 321; the pin block 331 is inserted into the fixing block 321 through the slot; the pin shaft 332 is slidably connected to the pin block 331; both the pin block 331 and the pin shaft 332 are connected to the installation and fixing component 34.

[0043] The mounting and fixing assembly 34 includes a locking spring 341, a fixing bracket 342, and a pull block 343; the lower end of the locking spring 341 is fixedly connected to the fixing bracket 342, the upper end of the locking spring 341 is fixedly connected to the pin block 331, the upper end of the fixing bracket 342 is fixedly connected to the pin shaft 332, and the pull block 343 is fixedly connected to the pin shaft 332.

[0044] In this invention, the operator places the rotating shaft 312 inside the mounting sleeve of the wheelchair, at which point the outer side of the bearing 322 abuts against the mounting sleeve. Then, the slot on the fixing block 321 is aligned with the slot on the wheelchair, and the pin block 331 is inserted into the slot to complete the positioning. At this time, the pin shaft 332 is driven upward by the locking spring 341 and inserted into the pin hole on the wheelchair to fix the pin block 331. When disassembly is required, simply pull the pull block 343, which moves the pin shaft 332 downward to contact the pin shaft 332 and the pin hole. Then, the mounting block 311 is pulled outward to complete the disassembly, allowing the user to easily replace the front fork without tools.

[0045] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wheelchair fork assembly structure comprising a fork main body (1), characterized by: It also includes an adjustable shock absorption mechanism (2) and a convenient installation mechanism (3); The fork body (1) is equipped with an adjustable damping mechanism (2) for convenient adjustment of damping performance under different road conditions during the stroke; The adjustable shock absorption mechanism (2) is equipped with a convenient installation mechanism (3) for users to quickly replace the installation device; The adjustable shock absorption mechanism (2) includes a shock absorption component (21), a limiting component (22), and a shock absorption adjustment component (23); the fork body (1) and the limiting component (22) are both connected to the shock absorption component (21), and the fork body (1), the convenient installation mechanism (3), and the shock absorption adjustment component (23) are all connected to the limiting component (22); the shock absorption component (21) is used to absorb shock for the fork body (1); the limiting component (22) is used to limit the shock absorption adjustment component (23), and the shock absorption adjustment component (23) is used to adjust the shock absorption amplitude.

2. The wheelchair fork assembly structure of claim 1, wherein The shock absorption assembly (21) includes a shock absorption spring (211) and a shock absorber (212); the lower end of the shock absorber (212) is fixedly connected to the upper end of the fork body (1), the shock absorption spring (211) is sleeved on the outside of the shock absorber (212) and fixedly connected to the shock absorber (212), and the lower end of the shock absorption spring (211) is fixedly connected to the upper end of the fork body (1); the upper ends of the shock absorption spring (211) and the shock absorber (212) are both connected to the limiting assembly (22).

3. The wheelchair fork assembly structure of claim 2, wherein The limiting component (22) includes a limiting rod (221) and a limiting plate (222); the two limiting rods (221) are symmetrically arranged on the left and right, and the lower end of the limiting rod (221) is fixedly connected to the upper end of the fork body (1); the upper end of the limiting rod (221) is slidably connected to the limiting plate (222), and both the limiting rod (221) and the limiting plate (222) are connected to the shock absorption adjustment component (23); the limiting plate (222) is connected to the convenient installation mechanism (3); the upper end of the shock absorption spring (211) is fixedly connected to the limiting plate (222), and the limiting plate (222) is fixedly connected to the upper end of the shock absorber (212).

4. The wheelchair fork assembly structure of claim 3, wherein The shock absorption adjustment assembly (23) includes a screw (231), a nut (232), and a limiting shaft (233); the lower end of the screw (231) is fixedly connected to the upper end of a limiting rod (221); the nut (232) is threadedly connected to the screw (231), and the lower end of the nut (232) is fixedly installed with the limiting shaft (233), the lower end of the limiting shaft (233) abuts against the limiting plate (222); the limiting shaft (233) is sleeved on the outer side of the upper end of the limiting rod (221).

5. The wheelchair fork assembly structure of claim 3, wherein The convenient installation mechanism (3) includes a rotating component (31), a mounting component (32), a convenient installation component (33), and a mounting fixing component (34); the fork body (1) and the mounting component (32) are both connected to the rotating component (31); the convenient installation component (33) is connected to the mounting component (32); the mounting fixing component (34) is connected to the convenient installation component (33); the rotating component (31) is used to provide steering capability for the device; the mounting component (32) is used to reduce wear on the rotating component (31); the convenient installation component (33) is used to facilitate the replacement of the rotating component (31) and the mounting component (32); the mounting fixing component (34) is used to fix the convenient installation component (33).

6. The wheelchair fork assembly structure of claim 5, wherein The rotating assembly (31) includes a mounting block (311) and a rotating shaft (312); the lower end of the mounting block (311) is fixedly connected to the limiting plate (222), the lower end of the rotating shaft (312) is rotatably connected to the mounting block (311), and the rotating shaft (312) is connected to the mounting assembly (32).

7. The wheelchair fork assembly structure of claim 6, wherein The mounting assembly (32) includes a fixing block (321) and a bearing (322); the lower end of the fixing block (321) is fixedly connected to the upper end of the rotating shaft (312), and the bearing (322) is sleeved on the outside of the rotating shaft (312) and rotatably connected to the rotating shaft (312); the fixing block (321) is connected to the convenient mounting assembly (33).

8. The wheelchair fork assembly structure of claim 7, wherein The convenient installation component (33) includes a pin block (331) and a pin shaft (332); a slot is provided on the fixing block (321); the pin block (331) is inserted into the fixing block (321) through the slot; the pin shaft (332) is slidably connected to the pin block (331); both the pin block (331) and the pin shaft (332) are connected to the installation and fixing component (34).

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