Damping device for electric wheelchair
By designing a symmetrical shock absorbing mechanism on the electric wheelchair, the problem of poor shock absorption effect of existing electric wheelchair shock absorbing devices is solved, and a more uniform and effective shock absorption effect is achieved, improving riding comfort and safety.
Patent Information
- Application Number
- CN202421717141.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-19
AI Technical Summary
The shock absorption devices of existing electric wheelchairs have a large gap in elastic coefficients of front and rear shock absorbers, resulting in poor shock absorption effects. The passengers feel a lot of bumpy feeling when driving on rugged roads, especially for passengers with poor health, bumpy vibrations will aggravate the pain.
A shock absorbing device for electric wheelchairs is designed, including a shock absorbing mechanism with a symmetrical character between the wheel and the frame plate. The shock absorbing mechanism consists of the first and second shock absorbing modules, suspension modules and limit seats. Through the synergistic effect of these components, uniform shock absorption of bumps is achieved.
It effectively reduces the feeling of bumps, improves riding comfort, and avoids secondary damage caused by vibration. Especially when driving on uneven roads, it can better decompose and absorb bumps, providing a more stable riding experience.
Smart Images
Figure CN222760212U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shock absorbing devices, in particular to a shock absorbing device for an electric wheelchair. Background Art
[0002] When the wheelchairs on the market travel on rough roads or go up and down stairs, they will produce large bumps and vibrations, making the passengers extremely uncomfortable. Especially for passengers who have just undergone surgery or have heart problems, such large bumps and vibrations will aggravate their pain.
[0003] This type of shock-absorbing wheelchair absorbs bumps and vibrations by installing shock absorbers on its front and rear wheels. However, the shock absorber springs used in the front and rear wheel shock absorbers of this wheelchair are of different lengths, with the shock absorber spring of the front wheel shock absorber being shorter and the shock absorber spring of the rear wheel shock absorber being longer. Since the shock absorber spring of the front wheel shock absorber is shorter and the elastic coefficient thereof is significantly different from that of the longer shock absorber spring of the rear wheel shock absorber, the shock absorption effect of this type of wheelchair is poor. Utility Model Content
[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a shock absorbing device for an electric wheelchair, which is convenient for realizing shock absorption when the wheelchair is walking.
[0005] The technical solution of the utility model is: a shock absorbing device for an electric wheelchair, comprising a mounting seat installed on the inner sides of two groups of wheels, a frame plate is arranged above the wheels, two groups of shock absorbing mechanisms are arranged between the wheels and the frame plate, the two groups of shock absorbing mechanisms are arranged symmetrically in an "eight" shape, the shock absorbing mechanisms include a first shock absorbing module, a second shock absorbing module and a suspension module, a limited seat is arranged in the middle of the frame plate, one end of the first shock absorbing module is connected to the limited seat, and the other end is connected to the mounting seat, one end of the second shock absorbing module is connected to the limited seat, and the other end is arranged below the seat plate through the suspension module.
[0006] It can be seen from the above scheme that the shock absorbing mechanism is arranged between the frame plate and the wheel to achieve shock absorption, the first shock absorbing module and the second shock absorbing module are used to achieve shock absorption for the wheels on both sides, the limit seat is arranged in the middle of the frame plate, and the first shock absorbing module and the second shock absorbing module are arranged obliquely and symmetrically to facilitate the decomposition of force and shock absorption when up and down bumps are achieved on uneven roads, thereby achieving uniform shock absorption. When the utility model travels on bumpy roads, it can effectively reduce the bumpy feeling and improve comfort.
[0007] The first shock absorbing module and the second shock absorbing module respectively include two groups of shock absorbers arranged in parallel and spring members sleeved on the shock absorbers, the shock absorbers include a two-way cylinder, a piston arranged in the two-way cylinder and a piston rod, one end of the piston rod extends out of the piston and is connected to the mounting seat, and the other end is connected to the limit seat. It can be seen that the spring member is used to support the weight of the vehicle body and provide a certain degree of elastic buffering, the shock absorber is used to eliminate the vibration and impact caused by uneven road surface, and the piston is provided with a plurality of small holes.
[0008] The suspension module includes a mounting cylinder seat, a connection block correspondingly arranged below the mounting cylinder seat, and a buffer spring arranged between the mounting cylinder seat and the connection block, wherein the connection block is connected to the inner side of the mounting cylinder seat, a mounting hole is coaxially arranged in the mounting cylinder seat, one end of the buffer spring extends into the mounting hole and is connected to the inner wall of the mounting cylinder seat, and the other end is fixedly connected to the end surface of the connection block, and the second shock absorbing module is connected to both sides of the connection block. It can be seen that the buffer spring is used to support the weight of the vehicle body in the vertical direction and achieve buffering.
[0009] Shock-absorbing protective plates are respectively arranged on both sides of the shock-absorbing mechanism. It can be seen that the shock-absorbing protective plates are used to protect the shock-absorbing mechanism.
[0010] The first connection and fixing block and the second connection and fixing block are respectively arranged on both sides of the limit seat, the first connection and fixing block is connected to the first damping module, and the second connection and fixing block is connected to the second damping module. It can be seen that the first connection and fixing block and the second connection and fixing block are respectively used to connect the first damping module and the second damping module. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a front view of the utility model;
[0012] Figure 2 It is a partial structural schematic diagram of the utility model;
[0013] Figure 3 It is a structural schematic diagram of the utility model; DETAILED DESCRIPTION
[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0015] like Figures 1 to 3As shown, the utility model is a shock absorbing device for an electric wheelchair, comprising a mounting seat 5 mounted on the inner side of two sets of wheels 100, a frame plate 200 is arranged above the wheels 100, two sets of shock absorbing mechanisms are arranged between the wheels 100 and the frame plate 200, and the two sets of shock absorbing mechanisms are arranged symmetrically in an "eight" shape, and the shock absorbing mechanisms include a first shock absorbing module 1, a second shock absorbing module 2 and a suspension module 3. A limiting seat 4 is arranged in the middle of the frame plate 200, one end of the first shock absorbing module 1 is connected to the limiting seat 4, and the other end is connected to the mounting seat 5, one end of the second shock absorbing module 2 is connected to the limiting seat 4, and the other end is arranged below the seat plate through the suspension module 3. In this embodiment, the mounting seat 5 is coaxially installed on the inner side of the wheel 100. The shock absorbing device provided by the utility model is suitable for use with a walking wheel unit at the bottom of a wheelchair. The walking unit at the bottom of the wheelchair includes two sets of front wheels and two sets of rear wheels arranged at the bottom of the frame 200. A shock absorbing mechanism is arranged between the mounting seat 5 on the inner side of the rear wheel 100 and the frame 200 for shock absorption.
[0016] The first shock absorbing module 1 and the second shock absorbing module 2 respectively include two groups of shock absorbers arranged in parallel, and the shock absorbers include a bidirectional cylinder 11, a piston 12 arranged in the bidirectional cylinder 11, a piston rod 13 and a spring member 14, one end of the piston rod 13 extends out of the piston 12 and is connected to the mounting seat 5, and the other end is connected to the limit seat 4. In this embodiment, the bidirectional cylinder 11 is filled with shock absorbing oil for providing damping.
[0017] The suspension module 3 includes a mounting cylinder seat 31, a connecting block 32 correspondingly arranged below the mounting cylinder seat 31, and a buffer spring 33 arranged between the mounting cylinder seat 31 and the connecting block 32. The connecting block 32 is connected to the inner side of the mounting seat 5. A mounting hole 311 is coaxially arranged in the mounting cylinder seat 31. One end of the buffer spring 33 extends into the mounting hole 311 and is connected to the inner wall of the mounting cylinder seat 31, and the other end is fixedly connected to the end face of the connecting block 32. The second shock absorbing module 2 is connected to both sides of the connecting block 32.
[0018] The two sides of the shock absorbing mechanism are respectively provided with shock absorbing protective plates 6. In this embodiment, the shock absorbing protective plates 6 are provided with a plurality of through holes for reducing weight.
[0019] The first connection and fixing block 41 and the second connection and fixing block 42 are respectively provided on both sides of the limit seat 4, the first connection and fixing block 41 is connected to the first damping module 1, and the second connection and fixing block 42 is connected to the second damping module 2. In this embodiment, the limit seat 4 is connected to the first connection and fixing block 41 through the first mounting holes on both sides, and the limit seat 4 is connected to the second connection and fixing block 42 through the second mounting holes on both sides, and the first connection and fixing block 41 is located above the second connection and fixing block 42.
[0020] The working process of the utility model is as follows: the shock absorbing device is installed under the frame plate 200 of the wheelchair. When the wheelchair is moving on the road, the shock absorber eliminates the vibration and impact caused by the uneven road surface, and the buffer spring 33 is used to achieve buffering, which effectively reduces the bumpy feeling, improves the comfort, and avoids secondary injuries caused by vibration to people sitting in the wheelchair.
[0021] Finally, it should be emphasized that the above is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A shock absorbing device for an electric wheelchair, comprising a mounting seat (5) mounted on the inner side of two sets of wheels (100), a frame plate (200) being arranged above the wheels (100), and two sets of shock absorbing mechanisms being arranged between the wheels (100) and the frame plate (200), characterized in that: The two groups of shock absorbing mechanisms are arranged symmetrically in an "eight" shape, and the shock absorbing mechanisms comprise a first shock absorbing module (1), a second shock absorbing module (2) and a suspension module (3); the first shock absorbing module (1) and the second shock absorbing module (2) are arranged obliquely in parallel; the suspension module (3) is connected below the frame plate (200); a limit seat (4) is arranged in the middle of the frame plate (200); one end of the first shock absorbing module (1) is connected to the limit seat (4), and the other end is connected to the mounting seat (5); one end of the second shock absorbing module (2) is connected to the limit seat (4), and the other end is connected to the bottom of the suspension module (3).
2. A shock absorbing device for an electric wheelchair according to claim 1, characterized in that: The first shock absorbing module (1) and the second shock absorbing module (2) respectively comprise two groups of shock absorbers arranged in parallel, wherein the shock absorbers comprise a bidirectional cylinder (11), a piston (12) arranged in the bidirectional cylinder (11), a piston rod (13) and a spring member (14); one end of the piston rod (13) extends out of the piston (12) and is connected to the mounting seat (5), and the other end is connected to the limit seat (4).
3. The shock absorbing device for an electric wheelchair according to claim 1, characterized in that: The suspension module (3) comprises a mounting cylinder seat (31), a connecting block (32) correspondingly arranged below the mounting cylinder seat (31), and a buffer spring (33) arranged between the mounting cylinder seat (31) and the connecting block (32); the connecting block (32) is connected to the inner side of the mounting seat (5); a mounting hole (311) is coaxially arranged in the mounting cylinder seat (31); one end of the buffer spring (33) extends into the mounting hole (311) and is connected to the inner wall of the mounting cylinder seat (31); the other end is fixedly connected to the end surface of the connecting block (32); and the second damping module (2) is connected to both sides of the connecting block (32).
4. The shock absorbing device for an electric wheelchair according to claim 1, characterized in that: Shock-absorbing protective plates (6) are respectively arranged on both sides of the shock-absorbing mechanism.
5. The shock absorbing device for an electric wheelchair according to claim 1, characterized in that: A first connecting and fixing block (41) and a second connecting and fixing block (42) are respectively arranged on both sides of the limiting seat (4); the first connecting and fixing block (41) is connected to the first damping module (1), and the second connecting and fixing block (42) is connected to the second damping module (2).