Wheelchair with adjustable armrests
By designing a lifting and adjusting mechanism for a wheelchair with adjustable armrests, the inconvenience of getting on a wheelchair caused by fixed armrests is solved, the flexible adjustment of the armrest height is achieved, and the convenience and safety of the wheelchair are improved.
Patent Information
- Application Number
- CN202421970821.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-08-14
AI Technical Summary
The armrest baffles of existing wheelchairs are usually fixed structures, which makes it difficult for users to get on and off the wheelchair by themselves, especially for people with limited mobility who need help from others, and the fixed armrests become obstacles to getting on the wheelchair.
A wheelchair with adjustable armrests is designed. The armrest height can be flexibly adjusted through a lifting and adjusting mechanism, which includes components such as slide rails, sliders, support rods, angle brackets, screws and nuts. The armrest surface is allowed to be lower than the seat surface, making it easier for users to sit on the wheelchair from one side. The armrest is fixed through knobs and threaded connections.
It improves the convenience and safety of wheelchairs, making it easier for people with limited mobility to get on and off wheelchairs by themselves or with the help of others, reduces the risk of accidental movement of the armrests, and extends the service life of the wheelchair.
Smart Images
Figure CN223474013U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wheelchair technology, specifically to an adjustable armrest wheelchair. Background Technology
[0002] A wheelchair is a chair equipped with wheels that can help replace walking. It is an important mobility tool for the injured, sick, and disabled to use at home for rehabilitation, transportation, medical treatment, and outdoor activities. Wheelchairs not only meet the mobility needs of people with limb disabilities and limited mobility, but more importantly, they facilitate the movement and care of family members, and enable patients to exercise and participate in social activities with the help of wheelchairs.
[0003] In the existing technology, the armrests of wheelchairs are usually fixed structures, and users can only sit on the corresponding seat cushion from the front of the wheelchair. The front of the wheelchair is usually equipped with a footrest. However, wheelchair users are usually people with mobility impairments and need someone to help them sit on the wheelchair. Getting on the wheelchair from the front is very inconvenient. The fixed armrests are also an obstacle when getting on the wheelchair because they are higher than the seat cushion. In fact, the most convenient way for users to get on the seat is to sit on the side without obstacles first and then gradually adjust their sitting posture. Therefore, it is necessary to design a height-adjustable armrest installation structure. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model relates to an adjustable armrest wheelchair. This structure is simple and reliable, effectively solving the aforementioned technical problems and is suitable for widespread use. To achieve the above objectives, this utility model is implemented through the following technical solution:
[0005] An adjustable armrest wheelchair includes a seat cushion body for connection to a wheelchair frame. A fixed armrest is provided on one side of the seat cushion body, and an adjustable armrest is provided on the other side. The adjustable armrest is connected to the seat cushion body via a lifting adjustment mechanism. The lifting adjustment mechanism is used to adjust the height of the adjustable armrest so that its upper surface is lower than the upper surface of the seat cushion body. The lifting adjustment mechanism includes a corner bracket, a strip-shaped fixing member, a screw, and a nut. The horizontal side of the corner bracket is fixedly connected to the bottom of the adjustable armrest, and the vertical side of the corner bracket is fixedly connected to the nut. The screw is threaded to the nut and passes through the vertical side of the corner bracket. The top of the strip-shaped fixing member is fixedly connected to one side of the seat cushion body, and the lower part of the strip-shaped fixing member has a limiting hole for engaging with the head of the screw to fix the position of the adjustable armrest.
[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the head of the screw is provided with a knob, and the outer circumferential surface of the knob is provided with anti-slip teeth.
[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the lifting adjustment mechanism further includes a slide rail, a slider, and a support rod. The slide rail is fixedly installed on the inner side of the adjustable armrest and has a sliding groove. One end of the support rod is fixedly connected to the seat cushion body, and the other end of the support rod is fixedly connected to the slider. The slider slides in cooperation with the inner sliding groove of the slide rail.
[0008] Based on the above scheme and as a preferred embodiment of the above scheme: there are two slide rails, which are arranged symmetrically to each other.
[0009] Based on the above solution and as a preferred embodiment of the above solution: the strip fastener is connected to the side of the seat cushion body by means of bolt connection.
[0010] The outstanding and beneficial technical effects of this utility model compared with the prior art are: the armrest installation structure involved in this utility model is relatively simple and effective, and can realize the lifting and lowering adjustment of the armrest. It is convenient to operate, and the armrest can be lowered to facilitate others to help the user sit on the wheelchair from one side. After the user sits on the wheelchair, others can help raise the armrest and fix its position with screws. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the slide rail;
[0012] Figure 2 This is a schematic diagram of a screw;
[0013] Figure 3 This is a schematic diagram of the slider and the slide rail working together. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. However, the specific implementation methods and embodiments described below are for illustrative purposes only and are not intended to limit the present invention.
[0015] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The directions or positional relationships shown are for the purpose of describing this utility model only, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0016] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.
[0017] In existing technology, wheelchair handrails are typically fixed, allowing users to sit on the seat from the front. Wheelchairs usually have footrests at the front, but wheelchair users are generally people with mobility issues who require assistance to sit in the wheelchair. Getting on from the front is very inconvenient, and fixed handrails, being higher than the seat, also act as an obstacle. In reality, the most convenient way for users to get on the seat is to first sit on the unobstructed side and then gradually adjust their posture. To solve these technical problems, such as... Figure 1-3 As shown, this utility model relates to an adjustable armrest wheelchair, including a seat cushion body 1, which is connected to a wheelchair frame. A fixed armrest is provided on one side of the seat cushion body 1, and an adjustable armrest 2 is provided on the other side of the seat cushion body 1. The adjustable armrest 2 is connected to the seat cushion body 1 through a lifting and adjusting mechanism. The lifting and adjusting mechanism is used to adjust the height of the adjustable armrest 2 so that its upper surface can be lower than the upper surface of the seat cushion body 1. This design allows users to sit on the wheelchair more easily from one side, which greatly improves the convenience of getting into the wheelchair, especially for those with mobility impairments or who need assistance.
[0018] Specifically, the lifting and adjusting mechanism includes a slide rail 3, a slider 4, and a support rod 5. The slide rail 3 is fixedly installed on the inner side of the adjustable armrest 2 and has a sliding groove. One end of the support rod 5 is fixedly connected to the seat body 1, and the other end of the support rod 5 is fixedly connected to the slider 4. The slider 4 slides in cooperation with the internal sliding groove of the slide rail 3. Preferably, there are two slide rails 3, which are symmetrically arranged. Correspondingly, there are also two sliders 4. The cooperation between the slider 4 and the slide rail 3 allows the adjustable armrest 2 to move up and down vertically. The arrangement of two slide rails 3 ensures the accuracy of movement and also helps to maintain the balance of the armrest during the lifting and lowering process, avoiding instability or tilting caused by asymmetry. The design of the slide rail 3 and the slider 4 usually has high wear resistance and durability, which means that the lifting and adjusting mechanism can withstand long-term use without damage, thus extending the service life of the wheelchair.
[0019] Furthermore, the lifting and adjusting mechanism includes a corner bracket 6, a strip-shaped fixing member 7, a screw 8, and a nut 9. The horizontal side of the corner bracket 6 is fixedly connected to the bottom of the adjustable armrest 2, and the vertical side of the corner bracket 6 is fixedly connected to the nut 9. The screw 8 is threadedly connected to the nut 9 and passes through the vertical side of the corner bracket 6. The top of the strip-shaped fixing member 7 is fixedly connected to one side of the seat cushion body 1, and the lower part of the strip-shaped fixing member 7 is provided with a limiting hole. Preferably, the head of the screw 8 is provided with a knob 10, and the outer circumferential surface of the knob 10 is provided with anti-slip teeth. The knob 10 is designed to facilitate the user's grip and force to rotate the screw 8. When the armrest is in the raised state, the end of the screw 8 is inserted into the strip-shaped fixing member 7. The handrail is fixed in the limiting hole. By turning the knob 10 to unscrew the screw 8 so that its end is disengaged from the limiting hole, the handrail can be lowered until the slider 4 moves to the top of the slide groove. The use of the screw 8 allows the adjustable handrail 2 to be safely fixed in the desired position. Through the threaded connection of the screw 8 and the nut 9, and the setting of the knob 10, the user or caregiver can easily adjust and fix the position of the handrail, thereby reducing the risk of the handrail moving accidentally during use. The lifting and adjusting mechanism is composed of simple components such as the angle bracket 6, the strip fixing part 7, the screw 8 and the nut 9. The combination of these components is not only easy to manufacture and maintain, but also ensures the reliability and durability of the entire mechanism.
[0020] The innovative height adjustment mechanism allows for flexible adjustment of the armrest height, greatly improving the convenience and safety of the wheelchair.
[0021] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made by those skilled in the art based on the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.
Claims
1. An adjustable armrest wheelchair, characterized in that: The device includes a seat cushion body for connection to a wheelchair frame. One side of the seat cushion body has a fixed armrest, and the other side has an adjustable armrest. The adjustable armrest is connected to the seat cushion body via a lifting adjustment mechanism. This mechanism adjusts the height of the adjustable armrest so that its upper surface is lower than the upper surface of the seat cushion body. The lifting adjustment mechanism includes a corner bracket, a strip-shaped fixing member, a screw, and a nut. The horizontal edge of the corner bracket is fixedly connected to the bottom of the adjustable armrest, and the vertical edge of the corner bracket is fixedly connected to the nut. The screw is threaded to the nut and passes through the vertical edge of the corner bracket. The top of the strip-shaped fixing member is fixedly connected to one side of the seat cushion body, and the lower part of the strip-shaped fixing member has a limiting hole for engaging with the head of the screw to fix the position of the adjustable armrest.
2. The adjustable armrest wheelchair according to claim 1, characterized in that: The head of the screw is provided with a knob, and the outer circumferential surface of the knob is provided with anti-slip teeth.
3. The adjustable armrest wheelchair according to claim 2, characterized in that: The lifting and adjusting mechanism also includes a slide rail, a slider, and a support rod. The slide rail is fixedly installed on the inner side of the adjustable armrest and has a sliding groove. One end of the support rod is fixedly connected to the seat cushion body, and the other end of the support rod is fixedly connected to the slider. The slider slides in cooperation with the inner sliding groove of the slide rail.
4. The adjustable armrest wheelchair according to claim 3, characterized in that: There are two slide rails, which are arranged symmetrically to each other.
5. The adjustable armrest wheelchair according to claim 4, characterized in that: The strip fastener is connected to the side of the seat cushion body by bolts.