Multi-angle adjustable wheelchair

Abstract

The utility model discloses a multi-angle adjusting wheelchair which comprises a seat assembly, a backrest assembly, a wheelchair support and a backrest adjusting mechanism. The seat assembly is connected with the wheelchair support, the backrest assembly comprises a backrest support, the lower portion of the backrest support is rotationally connected with the wheelchair support, one end of the backrest adjusting mechanism is connected with the wheelchair support, and the other end of the backrest adjusting mechanism is connected with the backrest support. The scheme has the characteristic of realizing multi-angle adjustment of the backrest and the seat.

Description

Technical Field

[0001] The utility model relates to the fields of rehabilitation equipment, medical equipment, seats for assisting the disabled and the elderly, and in particular to a multi-angle adjustable wheelchair. Background Art

[0002] A wheelchair is a device that helps the human body support weight, maintain balance, and assist walking. Usually, people with disabilities such as spinal cord injuries use wheelchairs for most of the day. At present, the adjustable seat and backrest functions of wheelchairs on the market have always been used on complex wheelchairs, and this function is relatively rarely used in lightweight folding wheelchairs. In addition, most of the time, this function is used to directly add adjustment components to the adjusted components, and the outer tube is extremely uncoordinated. Therefore, it is urgent to provide a multi-angle adjustable wheelchair to solve the above problems. Summary of the invention

[0003] Therefore, it is necessary to provide a wheelchair that can drive the backrest to adjust at multiple angles, change the angle between the seat and the backrest, and realize the multi-angle adjustment function of lying flat.

[0004] To achieve the above-mentioned purpose, the inventor provides a multi-angle adjustable wheelchair, comprising: a seat assembly, a backrest assembly, a wheelchair support and a backrest adjustment mechanism;

[0005] The seat assembly is connected to the wheelchair bracket, the backrest assembly includes a backrest bracket, the lower part of the backrest bracket is rotatably connected to the wheelchair bracket, one end of the backrest adjustment mechanism is connected to the wheelchair bracket, and the other end is connected to the backrest bracket.

[0006] As a preferred structure of the utility model, it also includes a seat adjustment mechanism;

[0007] The seat assembly comprises a seat support and a seat fixing frame, the front portion of the seat support is rotatably connected to the seat fixing frame, the rear end of the seat fixing frame is connected to the wheelchair support, one end of the seat adjustment mechanism is connected to the wheelchair support, and the other end is connected to the seat support.

[0008] As a preferred structure of the utility model, a seat support cross beam is provided on the seat support on one side away from the front end of the seat support and located at the rotational connection between the seat support and the seat fixing frame. The fixed end of the seat adjustment mechanism is connected to the wheelchair support, and the driving end is rotationally connected to the seat support cross beam.

[0009] As a preferred structure of the utility model, the seat assembly also includes a seat fixing frame crossbeam and a shock absorbing mechanism, wherein the seat fixing frame crossbeam is arranged at the front end of the seat fixing frame, and one end of the shock absorbing mechanism is connected to the wheelchair bracket, and the other end is connected to the seat fixing frame crossbeam.

[0010] As a preferred structure of the present utility model, the seat assembly further includes a seat tension belt or a seat board, and the seat tension belt or the seat board is arranged on the seat bracket.

[0011] As a preferred structure of the present utility model, the backrest assembly further includes a backrest support cross beam and an extension frame. The backrest support cross beam is arranged at the bottom of the backrest support, the extension frame is fixedly arranged on the backrest support cross beam, and one end of the backrest adjustment mechanism is connected to the wheelchair bracket and the other end is connected to the extension frame.

[0012] As a preferred structure of the present utility model, it further includes an armrest assembly. The armrest assembly includes an armrest bracket and an armrest support frame. The rear end of the armrest bracket is rotatably connected to the backrest bracket, one end of the armrest support frame is connected to the armrest bracket, and the other end is connected to the wheelchair bracket.

[0013] As a preferred structure of the present utility model, the wheelchair bracket includes a front wheel bracket, a rear wheel bracket and / or a connecting piece. A front wheel is arranged at the front end of the front wheel bracket, a rear wheel is arranged at the rear end of the rear wheel bracket, the connecting piece is arranged at the connection part of the front wheel bracket and the rear wheel bracket, and the rear end of the seat fixing frame and the lower part of the backrest bracket are respectively connected to the connecting piece.

[0014] As a preferred structure of the present utility model, a first cross beam is arranged at the rear end of the rear wheel bracket, and the fixed end of the backrest adjustment mechanism is connected to the first cross beam.

[0015] As a preferred structure of the present utility model, the wheelchair bracket includes a front wheel bracket, a rear wheel bracket and / or a connecting piece. A front wheel is arranged at the front end of the front wheel bracket, a rear wheel is arranged at the rear end of the rear wheel bracket, the connecting piece is arranged at the connection part of the front wheel bracket and the rear wheel bracket, and the rear end of the seat fixing frame and the lower part of the backrest bracket are respectively connected to the connecting piece. A second cross beam is arranged at the rear end of the front wheel bracket, and the fixed end of the seat adjustment mechanism is connected to the second cross beam.

[0016] As a preferred structure of the present utility model, a battery compartment is further arranged on the wheelchair bracket. The battery compartment is used for arranging a drive battery, the drive battery is electrically connected to the backrest adjustment mechanism, and the backrest adjustment mechanism is an electric push rod.

[0017] As a preferred structure of the present utility model, a battery compartment is further arranged on the wheelchair bracket. The battery compartment is used for arranging a drive battery, the drive battery is electrically connected to the seat adjustment mechanism, and the seat adjustment mechanism is an electric push rod.

[0018] Different from the prior art, the beneficial effects achieved by the above technical solution are as follows: By providing a backrest adjustment mechanism on the wheelchair, the angle of the backrest can be adjusted, realizing the functions of multiple angles between the seat and the backrest, and the ability to lie flat, so as to meet the different angle requirements of different patients for the wheelchair. Moreover, the structure of this wheelchair is simple, and the overall structure and each component are linked and coordinated, which is convenient for operation and can be widely applied to lightweight wheelchairs or lightweight folding wheelchairs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a schematic diagram of the overall structure of the multi-angle adjustable wheelchair described in the specific embodiment;

[0020] Figure 2 FIG. is a schematic diagram of the rotation points of the seat bracket and the backrest bracket described in the specific embodiment;

[0021] Figure 3 FIG. is a schematic diagram of the structure of the seat assembly described in the specific embodiment Figure 1 ;

[0022] Figure 4 FIG. is a schematic diagram of the structure of the seat assembly described in the specific embodiment Figure 2 ;

[0023] Figure 5 FIG. is a schematic diagram of the structure of the backrest assembly described in the specific embodiment;

[0024] Figure 6 FIG. is a schematic diagram of the structure of the wheelchair bracket described in the specific embodiment;

[0025] Figure 7 FIG. is a schematic diagram of the structure of the armrest assembly described in the specific embodiment.

[0026] DESCRIPTION OF THE REFERENCE NUMERALS:

[0027] 1. Seat assembly; 101. Seat bracket; 102. Seat fixing frame; 103. Seat bracket cross beam; 104. Seat fixing frame cross beam; 105. Shock absorption mechanism; 106. Tightening belt; 2. Backrest assembly; 201. Backrest bracket; 202. Backrest bracket cross beam; 203. Extension frame; 3. Wheelchair bracket; 301. Front wheel bracket; 302. Rear wheel bracket; 303. Connecting piece; 304. First cross beam; 305. Second cross beam; 4. Armrest assembly; 401. Armrest bracket; 402. Armrest support frame; 501. Backrest adjustment mechanism; 502. Seat adjustment mechanism; 601. Battery compartment. SPECIFIC EMBODIMENT

[0028] In order to elaborate in detail the technical content, structural features, achieved objectives and effects of the technical solution, the following is described in detail with specific embodiments in conjunction with the accompanying drawings.

[0029] AsFigures 1 to 3 As shown in the figure, this embodiment provides a multi-angle adjustable wheelchair, including: a seat assembly 1, a backrest assembly 2, a wheelchair bracket 3, and a backrest adjustment mechanism 501;

[0030] The seat assembly 1 is connected to the wheelchair bracket 3. The backrest assembly 2 includes a backrest bracket 201. The lower part of the backrest bracket 201 is rotatably connected to the wheelchair bracket 3. One end of the backrest adjustment mechanism 501 is connected to the wheelchair bracket 3, and the other end is connected to the backrest bracket 201. During actual use, the angle of the backrest bracket 201 can be adjusted by driving the backrest adjustment mechanism 501. That is, when the backrest adjustment mechanism 501 works, the backrest bracket rotates around Figure 2 point a therein, so as to achieve the effect of multi-angle adjustment.

[0031] As Figure 3 and Figure 4 shown, in some embodiments, this wheelchair further includes a seat adjustment mechanism 502; the seat assembly 1 includes a seat bracket 101 and a seat fixing frame 102. The front part of the seat bracket 101 is rotatably connected to the seat fixing frame 102. The rear end of the seat fixing frame 102 is connected to the wheelchair bracket. One end of the seat adjustment mechanism 502 is connected to the wheelchair bracket 3, and the other end is connected to the seat bracket 101; in this embodiment, the setting of the seat adjustment mechanism can adjust the angle of the seat bracket. Specifically: when the seat adjustment mechanism works, the seat adjustment mechanism extends, driving the seat bracket to rotate around Figure 2 point b therein, so as to achieve the adjustment of the seat angle; in this embodiment, the setting of the seat fixing frame can not only provide a supporting force for the seat bracket, but also provide a rotation point, jointly achieving the purpose of multi-angle adjustment of the seat bracket. In the above embodiments, the seat adjustment mechanism and the backrest adjustment mechanism can adopt electric push rods and are electrically driven.

[0032] As Figure 3 shown, in order to facilitate the setting of the seat adjustment mechanism, as well as improve the rotational stability of the seat bracket and the overall support force balance, in this embodiment, a seat bracket cross beam 103 is provided on one side of the seat bracket away from the front end of the seat bracket and at the rotational connection of the seat bracket and the seat fixing frame. The fixed end of the seat adjustment mechanism can be connected to the wheelchair bracket, and the driving end is rotatably connected to the seat bracket cross beam 103. That is, the seat bracket cross beam 103 is driven by the seat adjustment mechanism 502 to indirectly achieve the stability and balance of the seat bracket during the overall rotation process.

[0033] In addition, as Figure 3 and Figure 4As shown, in some embodiments, the seat assembly also includes a seat fixing frame beam 104 and a shock absorbing mechanism 105. The seat fixing frame beam 104 is arranged at the front end of the seat fixing frame 102, and one end of the shock absorbing mechanism 105 is connected to the wheelchair bracket 3, and the other end is connected to the seat fixing frame beam 104; in this embodiment, the setting of the seat fixing frame beam 104 can effectively improve the overall stability and balance of the seat fixing frame, and by setting the shock absorbing mechanism 105, such as: shock absorbing spring, shock absorbing hydraulic rod, etc., while providing the seat fixing frame with a stable and balanced supporting force, it can also effectively buffer the stress, avoid bumps or sudden stress increases during the use of the wheelchair, and cause injuries to the wheelchair user, thereby increasing the wheelchair user experience.

[0034] like Figure 7 As shown, in some embodiments, the seat assembly further includes a seat tightening belt 106 or a seat plate, which is disposed on the seat support.

[0035] like Figure 5 As shown, the backrest assembly 2 also includes a backrest support beam 202 and an extension frame 203. The backrest support beam 202 is arranged at the bottom of the backrest support 201, and the extension frame 203 is fixed on the backrest support beam 202. One end of the backrest adjustment mechanism 501 is connected to the wheelchair support 3, and the other end is connected to the extension frame 203. In this embodiment, the setting of the backrest support beam 202 and the extension frame 203 can effectively provide stable and balanced driving force support for the backrest adjustment mechanism during the process of adjusting the backrest, and the overall structure is simple, and the various components are linked and coordinated.

[0036] like Figure 7 As shown, in some embodiments, the wheelchair further includes an armrest assembly 4, which includes an armrest bracket 401 and an armrest support frame 402. The rear end of the armrest bracket 401 is rotatably connected to the backrest bracket 201. One end of the armrest support frame 402 is connected to the armrest bracket 401, and the other end is connected to the wheelchair bracket 3, specifically, it can be connected to the connecting piece 303. Figure 1 As shown, a battery compartment 601 is also provided on the wheelchair bracket, and the battery compartment is used to set a driving battery, and the driving battery is electrically connected to the seat adjustment mechanism and the backrest adjustment mechanism respectively.

[0037] In the above embodiment, if Figure 6 and Figure 7As shown, the wheelchair bracket 3 includes a front-wheel bracket 301, a rear-wheel bracket 302 and / or a connecting member 303. A front wheel is provided at the front end of the front-wheel bracket 301, and a rear wheel is provided at the rear end of the rear-wheel bracket 302. In this embodiment, the rear wheel is driven by a motor. The connecting member 303 is disposed at the connection between the front-wheel bracket and the rear-wheel bracket. The rear end of the seat fixing bracket and the lower part of the backrest bracket are respectively connected to the connecting member. A first cross beam 304 is provided at the rear end of the rear-wheel bracket. The fixed end of the backrest adjusting mechanism is connected to the first cross beam. In this embodiment, the setting of the first cross beam can not only provide a connection point for the backrest adjusting mechanism, but also make the backrest adjusting mechanism more stable and the adjustment process more balanced during operation. In addition, by providing the connecting member, not only can the front-wheel bracket and the rear-wheel bracket be connected and fixed, but also a rotation point can be provided for the backrest bracket and a supporting force can be provided for the rear end of the seat fixing bracket.

[0038] In some embodiments, the wheelchair bracket 3 includes a front-wheel bracket 301, a rear-wheel bracket 302 and / or a connecting member 303. A front wheel is provided at the front end of the front-wheel bracket 301, and a rear wheel is provided at the rear end of the rear-wheel bracket 302. The connecting member 303 is disposed at the connection between the front-wheel bracket 301 and the rear-wheel bracket 302. The rear end of the seat fixing bracket and the lower part of the backrest bracket are respectively rotatably connected to the connecting member. A second cross beam 305 is provided at the rear end of the front-wheel bracket. The fixed end of the seat adjusting mechanism 502 is connected to the second cross beam 305. In this embodiment, the setting of the second cross beam 305 can not only provide a connection for the seat adjusting mechanism and the shock-absorbing mechanism, but also make the seat adjusting mechanism and the shock-absorbing mechanism more stable and the whole wheelchair more balanced during operation.

[0039] It should be noted that although the above embodiments have been described in this article, the patent protection scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, any changes and modifications made to the embodiments described in this article, or equivalent structural or equivalent process transformations made using the content of the specification and drawings of the present invention, and directly or indirectly applying the above technical solutions to other related technical fields, are all included in the patent protection scope of the present invention.

Claims

1. A wheelchair with multi-angle adjustment, characterized in that, Comprising: A seat assembly, a backrest assembly, a wheelchair bracket, and a backrest adjustment mechanism; The seat assembly is connected to the wheelchair bracket. The backrest assembly includes a backrest bracket, the lower part of the backrest bracket is rotatably connected to the wheelchair bracket, one end of the backrest adjustment mechanism is connected to the wheelchair bracket, and the other end is connected to the backrest bracket; It further includes a seat adjustment mechanism; The seat assembly includes a seat bracket and a seat fixing frame. The front part of the seat bracket is rotatably connected to the seat fixing frame. The rear end of the seat fixing frame is connected to the wheelchair bracket. One end of the seat adjustment mechanism is connected to the wheelchair bracket, and the other end is connected to the seat bracket.

2. The multi-angle adjustable wheelchair according to claim 1, characterized in that: A seat bracket cross beam is provided on the seat bracket on one side of the rotational connection between the seat bracket and the seat fixing frame, away from the front end of the seat bracket. The fixed end of the seat adjustment mechanism is connected to the wheelchair bracket, and the driving end is rotatably connected to the seat bracket cross beam.

3. The multi-angle adjustable wheelchair according to claim 1, characterized in that: The seat assembly further includes a seat fixing frame cross beam and a shock absorption mechanism. The seat fixing frame cross beam is provided at the front end of the seat fixing frame. One end of the shock absorption mechanism is connected to the wheelchair bracket, and the other end is connected to the seat fixing frame cross beam.

4. The multi-angle adjustable wheelchair according to claim 1, characterized in that: The seat assembly further includes a seat tension belt or a seat board, and the seat tension belt or the seat board is provided on the seat bracket.

5. The multi-angle adjustable wheelchair according to claim 1, characterized in that: The backrest assembly further includes a backrest bracket cross beam and an extension frame. The backrest bracket cross beam is provided at the bottom of the backrest bracket. The extension frame is fixedly provided on the backrest bracket cross beam. One end of the backrest adjustment mechanism is connected to the wheelchair bracket, and the other end is connected to the extension frame.

6. The multi-angle adjustable wheelchair according to any one of claims 1 to 5, characterized in that: It further includes an armrest assembly. The armrest assembly includes an armrest bracket and an armrest support frame. The rear end of the armrest bracket is rotatably connected to the backrest bracket. One end of the armrest support frame is connected to the armrest bracket, and the other end is connected to the wheelchair bracket.

7. The multi-angle adjustable wheelchair according to any one of claims 1 to 5, characterized in that: The wheelchair bracket includes a front wheel bracket, a rear wheel bracket, and / or a connecting member. A front wheel is provided at the front end of the front wheel bracket. A rear wheel is provided at the rear end of the rear wheel bracket. The connecting member is provided at the connection between the front wheel bracket and the rear wheel bracket. The rear end of the seat fixing frame and the lower part of the backrest bracket are respectively connected to the connecting member.

8. The multi-angle adjustable wheelchair according to claim 7, characterized in that: A first cross beam is provided at the rear end of the rear wheel bracket. The fixed end of the backrest adjustment mechanism is connected to the first cross beam.

9. The multi-angle adjustable wheelchair according to any one of claims 1 to 5, characterized in that: The wheelchair bracket includes a front wheel bracket, a rear wheel bracket, and / or a connecting member. A front wheel is provided at the front end of the front wheel bracket. A rear wheel is provided at the rear end of the rear wheel bracket. The connecting member is provided at the connection between the front wheel bracket and the rear wheel bracket. The rear end of the seat fixing frame and the lower part of the backrest bracket are respectively connected to the connecting member. A second cross beam is provided at the rear end of the front wheel bracket. The fixed end of the seat adjustment mechanism is connected to the second cross beam.

10. The multi-angle adjustable wheelchair according to any one of claims 1 to 5, characterized in that: A battery compartment is further provided on the wheelchair bracket. The battery compartment is used to set a driving battery. The driving battery is electrically connected to the backrest adjustment mechanism, and the backrest adjustment mechanism is an electric push rod.

11. The multi-angle adjustable wheelchair according to any one of claims 1 to 5, characterized in that: A battery compartment is further provided on the wheelchair bracket. The battery compartment is used to set a driving battery. The driving battery is electrically connected to the seat adjustment mechanism, and the seat adjustment mechanism is an electric push rod.

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