Wheelchair capable of standing

Abstract

The utility model discloses a standing wheelchair which comprises a seat assembly and a chassis assembly, the seat assembly is mounted on the chassis assembly, the seat assembly comprises a backrest, a seat and a pedal, the backrest and the pedal are hinged to the seat, a seat angle adjusting mechanism used for adjusting the angle between the seat and the pedal is arranged at the bottom of the seat, and the chassis assembly is mounted on the chassis assembly. A backrest angle adjusting mechanism used for adjusting the angle between the seat and the backrest is arranged on the back face of the backrest, and when the wheelchair stands, the bottoms of the pedals are supported on the ground. Angles of the backrest, the seat and the pedals are adjusted through the backrest angle adjusting mechanism and the seat angle adjusting mechanism, so that the wheelchair is in a standing state and is convenient to use, in the standing state, supporting wheels on the pedals and rear wheels on the frame are supported on the ground, front wheels are suspended, the gravity center is stable, and the wheelchair can still move and is good in stability.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchairs, and particularly relates to a standing and folding wheelchair. Background Art

[0002] A wheelchair is an important rehabilitation tool. It is not only a means of transportation for the physically disabled, but more importantly, it enables them to exercise their bodies and participate in social activities with the help of a wheelchair. An ordinary wheelchair generally consists of components such as a wheelchair frame, wheels, a braking device, and a seat and backrest.

[0003] According to statistics, due to various traffic accidents, natural disasters and various diseases, thousands of people lose their ability to walk every year. There are more than three million hemiplegic patients in our country, and the degree of social aging is still increasing. Many elderly people need to use wheelchairs. Therefore, the total number of elderly and disabled people using wheelchairs is very large. Usually, they need to be accompanied by family members and caregivers to complete their daily life, or those in slightly better condition need to rely on wheelchairs to move. However, the functions of ordinary wheelchairs are often relatively single and cannot meet the personalized needs of users. For example, when a person sitting in a wheelchair needs to stand up, since most wheelchair users are the elderly, the weak, the sick and the disabled with limited mobility, when they need to stand up from the wheelchair, they often need to be supported by others. Therefore, such wheelchairs cannot meet the need for the people on the wheelchair to stand up by themselves. Summary of the Utility Model

[0004] Aiming at the defects or deficiencies existing in the above-mentioned prior art, the utility model aims to provide a wheelchair that can automatically stand and stand stably.

[0005] The purpose of this application is completed through the following technical solutions:

[0006] A standing wheelchair includes a seat assembly and a chassis assembly. The seat assembly is installed on the chassis assembly. The seat assembly includes a backrest, a seat and pedals. The backrest and the pedals are respectively hinged to the seat. A seat angle adjustment mechanism for adjusting the angle between the seat and the pedals is provided at the bottom of the seat, and a backrest angle adjustment mechanism for adjusting the angle between the seat and the backrest is provided on the back of the backrest. When the wheelchair stands, the bottom of the pedals supports on the ground.

[0007] Preferably, the backrest includes a cushion, linear guide rails on both sides of the back of the cushion, and a backrest bracket. The cushion is fixed on the linear guide rails. The backrest bracket includes two guide rods slidably connected to the linear guide rails, a U-shaped rod connecting the two guide rods, two vertical rods parallel to the guide rods and connected to the U-shaped rod, and a first reinforcing rod connecting the two vertical rods and parallel to the U-shaped rod.

[0008] Preferably, the seat includes a seat cushion, a seat board, and a seat bracket. The seat cushion is mounted on the seat board, and the seat board is fixed to the seat bracket. The seat bracket includes two first telescopic adjustment rods, two second telescopic adjustment rods, a second reinforcing rod, and a fixing rod. The telescopic part of the first telescopic adjustment rod is connected to the seat board. The second telescopic adjustment rod is located below the first telescopic adjustment rod. The second reinforcing rod is connected between the fixed parts of the two first telescopic adjustment rods. The two second telescopic adjustment rods are connected by the fixing rod.

[0009] Preferably, the backrest angle adjustment mechanism includes a first electric push rod, a backrest hinge shaft assembly, an arc-shaped connecting part, and a first push rod connecting frame. The bottom of the backrest bracket is hinged to the rear side of the seat bracket through the backrest hinge shaft assembly. The first push rod connecting frame is connected to the seat bracket and the backrest hinge shaft assembly. The first electric push rod is mounted on the first push rod connecting frame. The push rod end of the first electric push rod is connected to the first reinforcing rod. The arc-shaped connecting part is arranged on both sides of the seat and is respectively hinged to the side surface of the linear guide rail and the side surface of the seat board.

[0010] Preferably, the footrest includes a pedal, a pedal support, a support wheel, a pedal support connecting piece, a pedal support connecting seat, a triangular connecting plate, and a multi-layer connecting plate. The upper end of the multi-layer connecting plate is connected to the fixed parts of the first telescopic adjustment rod and the second telescopic adjustment rod. The lower end of the multi-layer connecting plate is mounted on the chassis assembly. The pedal is hinged to the pedal support. The support wheel is connected to the lower end of the pedal support. The upper end of the pedal support is connected to two of the corners of the triangular connecting plate through two pedal support connecting seats. The other corner of the triangular connecting plate is hinged to the lower end of the pedal support connecting piece. The upper end of the pedal support connecting piece is hinged to the fixed part of the first telescopic adjustment rod. The pedal support connecting seat is hinged to the front side of the multi-layer connecting plate.

[0011] Preferably, the seat angle adjustment mechanism includes a second electric push rod and a second push rod connecting frame. The second electric push rod is mounted on the chassis assembly through the second push rod connecting frame. The telescopic end of the second electric push rod is connected to the second reinforcing rod.

[0012] Preferably, the chassis assembly includes a frame, a front wheel, a rear wheel, a power source, a motor, and an anti-deviation wheel. The front wheel and the rear wheel are mounted on the front and rear sides of the frame. The power source and the motor are mounted on the frame. The power source is connected to the motor. The motor is drivingly connected to the rear wheel. The anti-deviation wheel is mounted inside the two rear wheels. When the wheelchair stands up, the support wheel and the rear wheel support the ground, and the front wheel is suspended.

[0013] Compared with the prior art, the present application has at least the following obvious advantages and effects:

[0014] In the present utility model, the backrest, seat and footrest are adjusted in angle by the backrest angle adjustment mechanism and the seat angle adjustment mechanism, so that the wheelchair is in a standing state, which is convenient to use. When in the standing state, the support wheels on the footrest and the rear wheels on the frame support the ground, and the front wheels are suspended. The center of gravity is stable, and the wheelchair can still move with good stability. Description of the Drawings

[0015] Figure 1 is a three-dimensional structure diagram of the present utility model;

[0016] Figure 2 is a schematic diagram of the state of the wheelchair of the present utility model;

[0017] Figure 3 is a connection structure diagram of the backrest angle adjustment mechanism and the seat angle adjustment mechanism in the present utility model;

[0018] Figure 4 is a connection structure diagram of the footrest in the middle of the seat in the present utility model.

[0019] List of components in this application: 1. Backrest; 2. Seat; 3. Footrest; 4. Chassis assembly; 5. Backrest angle adjustment mechanism; 6. Seat angle adjustment mechanism; 11. Cushion; 12. Linear guide rail; 13. Backrest bracket; 131. Guide rod; 132. U-shaped rod; 133. Vertical rod; 134. First reinforcing rod; 21. Seat cushion; 22. Seat board; 23. Seat bracket; 231. First telescopic adjustment rod; 232. Second telescopic adjustment rod; 233. Second reinforcing rod; 234. Fixed rod; 31. Pedal; 32. Pedal support; 33. Support wheel; 34. Pedal support connecting piece; 35. Pedal support connecting seat; 36. Triangular connecting plate; 37. Multiple connecting plates; 41. Frame; 42. Front wheel; 43. Rear wheel; 44. Power supply; 45. Motor; 46. Anti-deviation wheel; 51. First electric push rod; 52. Backrest hinge shaft assembly; 53. Arc-shaped connecting part; 54. First push rod connecting frame; 61. Second electric push rod; 62. Second push rod connecting frame. Detailed Embodiments

[0020] Specific embodiments of the present application are described in conjunction with the accompanying drawings and the following description to teach those skilled in the art how to make and use the best mode of the present application. For the purpose of teaching the principles of the application, some conventional aspects have been simplified or omitted. Those skilled in the art should understand that variations derived from these embodiments fall within the scope of the present application. Those skilled in the art should understand that the following features can be combined in various ways to form multiple variations of the present application. Terms such as "upper", "lower", "left", "right", "middle", and "one" cited in the present application are only for the convenience of clear narration and are not used to limit the scope of implementation of the present utility model. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope of implementation of the present utility model. Thus, the present application is not limited to the specific embodiments described below, but is defined only by the claims and their equivalents.

[0021] As Figures 1 to 4 shown, this embodiment relates to a stand-up wheelchair, which includes a seat assembly and a chassis assembly 4. The seat assembly is installed on the chassis assembly 4. The seat assembly includes a backrest 1, a seat 2, and a footrest 3. The backrest 1 and the footrest 3 are respectively hinged to the seat 2. A seat angle adjustment mechanism 6 for adjusting the angle between the seat 2 and the footrest 3 is provided at the bottom of the seat 2. A backrest angle adjustment mechanism 5 for adjusting the angle between the seat 2 and the backrest 1 is provided on the back of the backrest 1. When the wheelchair stands up, the bottom of the footrest 3 supports on the ground.

[0022] The backrest 1 includes a cushion 11, linear guide rails 12 on both sides of the back of the cushion 11, and a backrest bracket 13. The cushion 11 is fixed on the linear guide rails 12. The backrest bracket 13 includes two guide rods 131 slidably connected to the linear guide rails 12, a U-shaped rod 132 connecting the two guide rods 131, two vertical rods 133 parallel to the guide rods 131 and connected to the U-shaped rod 132, and a first reinforcing rod 134 connecting the two vertical rods 133 and parallel to the U-shaped rod 132.

[0023] The seat 2 includes a seat cushion 21, a seat board 22, and a seat bracket 23. The seat cushion 21 is installed on the seat board 22, and the seat board 22 is fixed on the seat bracket 23. The seat bracket 23 includes two first telescopic adjustment rods 231, two second telescopic adjustment rods 232, a second reinforcing rod 233, and a fixing rod 234. The telescopic part of the first telescopic adjustment rod 231 is connected to the seat board 22. The second telescopic adjustment rod 232 is located below the first telescopic adjustment rod 231. The second reinforcing rod 233 is connected between the fixed parts of the two first telescopic adjustment rods 231. The two second telescopic adjustment rods 232 are connected by the fixing rod 234.

[0024] The described backrest angle adjustment mechanism 5 includes a first electric push rod 51, a backrest hinge shaft assembly 52, an arc-shaped connecting portion 53, and a first push rod connecting frame 54. The bottom of the backrest bracket 13 is hinged to the rear side of the seat bracket 23 through the backrest hinge shaft assembly 52. The first push rod connecting frame 54 is connected to the seat bracket 23 and the backrest hinge shaft assembly 52. The first electric push rod 51 is installed on the first push rod connecting frame 54. The push rod end of the first electric push rod 51 is connected to the first reinforcing rod 134. The arc-shaped connecting portion 53 is arranged on both sides of the seat 2 and is respectively hinged to the side surface of the linear guide rail 12 and the side surface of the seat board 22.

[0025] The described footrest 3 includes a pedal 31, a pedal support 32, a support wheel 33, a pedal support connecting piece 34, a pedal support connecting seat 35, a triangular connecting plate 36, and a multi-layer connecting plate 37. The upper end of the multi-layer connecting plate 37 is connected to the fixed parts of the first telescopic adjustment rod 231 and the second telescopic adjustment rod 232. The lower end of the multi-layer connecting plate 37 is installed on the chassis assembly 4. The pedal 31 is hinged to the pedal support 32. The support wheel 33 is connected to the lower end of the pedal support 32. The upper end of the pedal support 32 is connected to two of the corners of the triangular connecting plate 36 through two pedal support connecting seats 35. The other corner of the triangular connecting plate 36 is hinged to the lower end of the pedal support connecting piece 34. The upper end of the pedal support connecting piece 34 is hinged to the fixed part of the first telescopic adjustment rod 231. The pedal support connecting seat 35 is hinged to the front side of the multi-layer connecting plate 37.

[0026] The described seat angle adjustment mechanism 6 includes a second electric push rod 61 and a second push rod connecting frame 62. The second electric push rod 61 is installed on the chassis assembly 4 through the second push rod connecting frame 62. The telescopic end of the second electric push rod 61 is connected to the second reinforcing rod 233.

[0027] The described chassis assembly 4 includes a vehicle frame 41, front wheels 42, rear wheels 43, a power source 44, a motor 45, and anti-deviation wheels 46. The front wheels 42 and the rear wheels 43 are installed on the front and rear sides of the vehicle frame 41. The power source 44 and the motor 45 are installed on the vehicle frame 41. The power source 44 is connected to the motor 45, the first electric push rod 51, and the second electric push rod 61. The motor 45 is drivingly connected to the rear wheels 43. The anti-deviation wheels 46 are installed inside the two rear wheels 43. When the wheelchair stands up, the support wheels 33 and the rear wheels 43 support the ground, and the front wheels 42 are suspended.

[0028] The working principle of the present utility model is:

[0029] As Figure 2As shown, it is a schematic diagram of the wheelchair in the sitting state. At this time, the front wheels 42, rear wheels 43 and anti-deviation wheels 46 of the wheelchair support on the ground, and the support wheels 33 on the footrest 3 are suspended in the air, and the wheelchair moves by relying on driving the rear wheels 43. When the wheelchair needs to be erected, the first electric push rod 51 and the second electric push rod 61 are started to push up simultaneously. The first electric push rod 51 adjusts the angle between the seat 2 and the backrest 1 to be close to 180 degrees, and the second electric push rod 61 adjusts the angle between the seat 2 and the footrest 3 to be close to 180 degrees. At this time, since the footrest 3 flips downward, the support wheels 33 at the bottom of the footrest 3 contact the ground, lifting the front wheels 42 into the air and relying on the rear wheels 43 and the support wheels 33 for support.

[0030] Since those skilled in the art can easily conceive that any modifications, equivalent replacements, improvements, etc. made within the concept and principle of the application should be included within the scope of the claims of this application.

Claims

1. A standing wheelchair, comprising a seat assembly and a chassis assembly, wherein the seat assembly is mounted on the chassis assembly, wherein the seat assembly comprises a backrest, a seat and a footrest, wherein the backrest and the footrest are respectively hinged to the seat, wherein: The seat bottom is provided with a seat angle adjustment mechanism for adjusting the angle between the seat and the footrest, and the back of the backrest is provided with a backrest angle adjustment mechanism for adjusting the angle between the seat and the backrest. When the wheelchair is standing, the bottom of the footrest is supported on the ground.

2. The stand-up wheelchair according to claim 1, characterized in that: The backrest includes a cushion, linear guide rails and a backrest bracket located on both sides of the back of the cushion, the cushion is fixed on the linear guide rails, and the backrest bracket includes two guide rods slidably connected to the linear guide rails, a U-shaped rod connecting the two guide rods, two vertical rods parallel to the guide rods and connected to the U-shaped rod, and a first reinforcing rod connecting the two vertical rods and parallel to the U-shaped rod.

3. The stand-up wheelchair according to claim 2, characterized in that: The seat includes a seat cushion, a seat plate and a seat bracket, the seat cushion is installed on the seat plate, the seat plate is fixed on the seat bracket, the seat bracket includes two first telescopic adjustment rods, two second telescopic adjustment rods, a second reinforcing rod and a fixed rod, the telescopic part of the first telescopic adjustment rod is connected to the seat plate, the second telescopic adjustment rod is located at the lower side of the first telescopic adjustment rod, the second reinforcing rod is connected between the fixed parts of the two first telescopic adjustment rods, and the two second telescopic adjustment rods are connected by a fixed rod.

4. The stand-up wheelchair according to claim 3, characterized in that: The backrest angle adjustment mechanism includes a first electric push rod, a backrest hinge shaft assembly, an arc-shaped connecting portion and a first push rod connecting frame. The bottom of the backrest bracket is hinged to the rear side of the seat bracket through the backrest hinge shaft assembly. The first push rod connecting frame is connected to the seat bracket and the backrest hinge shaft assembly. The first electric push rod is installed on the first push rod connecting frame. The push rod end of the first electric push rod is connected to the first reinforcing rod. The arc-shaped connecting portion is arranged on both sides of the seat and is respectively hinged to the side of the linear guide rail and the side of the seat plate.

5. The stand-up wheelchair according to claim 3, characterized in that: The foot pedal includes a pedal, a pedal support, a support wheel, a pedal support connecting piece, a pedal support connecting seat, a triangular connecting plate and a multiple connecting plate. The upper end of the multiple connecting plate is connected to the fixing parts of the first telescopic adjustment rod and the second telescopic adjustment rod, and the lower end of the multiple connecting plate is installed on the chassis assembly. The pedal is hinged on the pedal support, the support wheel is connected to the lower end of the pedal support, the upper end of the pedal support is connected to two corners of the triangular connecting plate through two pedal support connecting seats, the other corner of the triangular connecting plate is hinged to the lower end of the pedal support connecting piece, the upper end of the pedal support connecting piece is hinged to the fixing part of the first telescopic adjustment rod, and the pedal support connecting seat is hinged to the front side of the multiple connecting plate.

6. The stand-up wheelchair according to claim 5, characterized in that: The seat angle adjustment mechanism comprises a second electric push rod and a second push rod connecting frame. The second electric push rod is installed on the chassis assembly through the second push rod connecting frame. The telescopic end of the second electric push rod is connected to the second reinforcing rod.

7. The stand-up wheelchair according to claim 5, characterized in that: The chassis assembly includes a frame, front wheels, rear wheels, a power supply, a motor and an anti-skew wheel. The front wheels and rear wheels are installed on the front and rear sides of the frame, the power supply and the motor are installed on the frame, the power supply is connected to the motor, the motor is connected to the rear wheel drive, and the anti-skew wheel is installed on the inner side of the two rear wheels. When the wheelchair is standing, the supporting wheels and the rear wheels support the ground, and the front wheels are suspended in the air.

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