Electric wheelchair

Abstract

The utility model relates to the technical field of electric wheelchairs, and discloses an electric wheelchair which comprises an electric chair main body, driving wheels, steering wheels, a rear chair backrest, a protection mechanism and a folding assembly, the driving wheels and the steering wheels are rotationally connected to the electric chair main body, and the folding assembly is arranged on the upper surface of the electric chair main body. The rear chair backrest is arranged on the folding assembly, the protection mechanism is used for protecting a control device of the electric wheelchair, and the folding assembly is used for supporting the rear chair backrest and folding the electric wheelchair, so that when a user does not use the electric wheelchair, the protection mechanism can protect the control device of the electric wheelchair; the control device is prevented from being damaged due to external factors, safety is improved, and potential safety hazards caused by starting of the electric wheelchair due to the fact that old people touch the control device by mistake when not using the electric wheelchair can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of electric wheelchair technology, and in particular to an electric wheelchair. Background Technology

[0002] Electric wheelchairs are wheelchairs equipped with electric motors and navigation controls. They typically use a small joystick mounted on the armrests instead of manual power for movement. Depending on the control method, some use joysticks, while others use various switches such as headrests or ventilation systems. For severely paralyzed individuals or those requiring greater mobility, electric wheelchairs are a good option if their cognitive abilities are good. However, they require a larger space to move around, depending on the patient's condition. Various accessories are available, such as enhanced load-bearing capacity, special seat cushions or backrests, and neck support systems.

[0003] Chinese Patent Publication No. CN221617584U discloses an anti-slip electric wheelchair, including a wheelchair frame, two omnidirectional wheels, and two drive wheels. The two omnidirectional wheels are respectively installed at two corners of the bottom of the wheelchair frame, and the two drive wheels are located on the front and back sides of the wheelchair frame. A drive assembly for driving the two drive wheels to rotate is provided at one end of the bottom of the wheelchair frame. Fixing boxes are welded to the bottom of both sides of the wheelchair frame, and a support column is welded to the inner wall of one of the fixing boxes. This solution uses power to supply two electromagnets. The magnetic force generated by the two electromagnets after power supply will attract two movable blocks towards the two drive wheels. At the same time, two movable cylinders are driven by the two movable blocks towards the two drive wheels. The abutment blocks at one end of the two movable cylinders will then tightly abut against the two drive wheels, thereby locking the two drive wheels and preventing them from rotating.

[0004] However, the above technology has the following drawbacks: when a user stops using the electric wheelchair and no longer uses it, the control device of the electric wheelchair has no protective measures and is easily damaged by external factors, causing safety hazards. In addition, without protective components, the control device is exposed and easily damaged, resulting in economic losses.

[0005] Therefore, it is necessary to provide an electric wheelchair to solve the above problems. Utility Model Content

[0006] In view of the aforementioned problems with electric wheelchairs, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide an electric wheelchair that can improve the problem of low safety due to the lack of protective measures in the control device of electric wheelchairs in related technologies.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an electric wheelchair, comprising: an electric chair body, drive wheels, steering wheels, a rear seat back, a protective mechanism, and a folding assembly. The drive wheels and the steering wheels are rotatably connected to the electric chair body. The folding assembly is disposed on the upper surface of the electric chair body. The rear seat back is disposed on the folding assembly. The protective mechanism is used to protect the control device of the electric wheelchair. The folding assembly is used to support the rear seat back and fold the electric wheelchair.

[0009] The technical solutions described above in this application embodiment have at least the following technical effects: When a user needs to use an electric wheelchair, the user first needs to activate the protective mechanism to display the control device of the electric wheelchair. Then, the staff uses the folding component to support the electric wheelchair, and the user sits on the back of the seat. The user then controls the drive wheels and steering wheels of the electric wheelchair through the control device. When the user no longer needs to use the electric wheelchair, the user uses the protective mechanism to protect the control device.

[0010] This application provides an electric wheelchair, which can be configured with an electric chair body, drive wheels, steering wheels, rear seat back, protective mechanism, and folding components. This allows the protective mechanism to protect the control device of the electric wheelchair when the user is not using it, preventing damage to the control device due to external factors, thus improving safety. It can also prevent the elderly from accidentally touching the control device when not using the electric wheelchair, causing the electric wheelchair to start and creating a safety hazard.

[0011] In a preferred embodiment of the electric wheelchair described in this utility model, the protective mechanism includes a support arm, a protective box, a control handle, a rotating assembly, a drive component, and a mounting plate. The support arm is disposed on both sides of the rear seat backrest, the control handle is disposed on the support arm, the mounting plate is disposed on the support arm, the rotating assembly and the drive component are both disposed on the mounting plate, the protective box is disposed on the rotating assembly, the protective box has a groove, and the control handle is located in the groove. The rotating assembly is used to rotate the protective box, and the drive component is used to drive the rotating assembly to rotate.

[0012] In a preferred embodiment of the electric wheelchair described in this utility model, the rotating assembly includes a first connecting block, a rotating block, a fixing plate, a first rotating plate, a second rotating plate, a second connecting block, and a first rotating shaft. A first through hole is provided on the support arm. The first connecting block is fixedly connected to the protective box. The fixing plate is fixedly connected to the mounting plate. The rotating block is rotatably connected to the fixing plate and fixedly connected to the first connecting block. The second connecting block is fixedly connected to the driving component. One end of the first rotating plate is rotatably connected to the rotating block, and the other end of the first rotating plate is rotatably connected to the second connecting block. The end of the first rotating plate near the second connecting block is disposed on the first rotating shaft. One end of the second rotating plate is rotatably connected to the fixing plate, and the other end of the second rotating plate is disposed on the first rotating shaft.

[0013] In a preferred embodiment of the electric wheelchair described in this utility model, the driving component includes a telescopic rod and a second fixing frame. The second fixing frame is fixedly connected to the mounting plate, the telescopic rod is rotatably connected to the second fixing frame, and the output shaft of the telescopic rod is fixedly connected to the second connecting block.

[0014] In a preferred embodiment of the electric wheelchair described in this utility model, the folding assembly includes a first folding plate, a connecting seat, and a telescopic plate. The connecting seat is fixedly connected to the bottom surface of the backrest of the rear seat. One end of the first folding plate and the telescopic plate are rotatably connected to the connecting seat, and the other end of the first folding plate and the telescopic plate are rotatably connected to the main body of the electric chair.

[0015] As a preferred embodiment of the electric wheelchair described in this utility model, a storage box is provided on the main body of the electric chair.

[0016] In a preferred embodiment of the electric wheelchair described in this utility model, multiple sets of the support arm, the drive wheel, and the steering wheel are provided, and the control handle controls the steering wheel to turn and controls the drive wheel to move forward and backward. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an electric wheelchair according to the present invention;

[0018] Figure 2 This is a cross-sectional view of an electric wheelchair according to the present invention;

[0019] Figure 3 For this Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4This is a side view of an electric wheelchair according to the present invention;

[0021] Figure 5 For this Figure 4 Enlarged view at point B in the middle;

[0022] Figure 6 This is a rear view of an electric wheelchair according to the present invention.

[0023] Figure Descriptions: 100, Electric chair body; 200, Drive wheel; 300, Steering wheel; 400, Protective mechanism; 401, Support arm; 402, Protective box; 403, Control handle; 404, Rotating assembly; 4041, First connecting block; 4042, Rotating block; 4043, Fixing plate; 4044, First rotating plate; 4045, Second rotating plate; 4046, Second connecting block; 4047, First pivot; 405, Drive component; 4051, Telescopic rod; 4052, Second fixing frame; 406, Mounting plate; 500, First through hole; 600, Groove; 700, Folding assembly; 701, First folding plate; 702, Connecting seat; 703, Telescopic plate; 800, Rear chair back; 900, Storage box. Detailed Implementation

[0024] When a user stops using an electric wheelchair and is no longer using it, the control device lacks protective measures and is easily damaged by external factors, posing a safety hazard. Furthermore, the lack of protective components leaves the control device exposed and prone to damage, resulting in economic losses.

[0025] Based on this, the problem of low safety due to the lack of protective measures in the control devices of electric wheelchairs in related technologies can be improved.

[0026] Example

[0027] Please refer to Figure 1 and Figure 6 This invention provides an electric wheelchair, comprising: an electric chair body 100, drive wheels 200, steering wheels 300, a rear seat back 800, a protective mechanism 400, and a folding assembly 700. The drive wheels 200 and steering wheels 300 are rotatably connected to the electric chair body 100. The folding assembly 700 is disposed on the upper surface of the electric chair body 100, and the rear seat back 800 is disposed on the folding assembly 700. The protective mechanism 400 is used to protect the control device of the electric wheelchair, and the folding assembly 700 is used to support the rear seat back 800 and fold the electric wheelchair.

[0028] Please refer to Figure 2 and Figure 3According to one embodiment of the present invention, an electric wheelchair is provided, whose protective mechanism 400 includes a support arm 401, a protective box 402, a control handle 403, a rotating assembly 404, a driving component 405, and a mounting plate 406. The support arm 401 is disposed on both sides of the rear seat back 800, the control handle 403 is disposed on the support arm 401, the mounting plate 406 is disposed on the support arm 401, the rotating assembly 404 and the driving component 405 are both disposed on the mounting plate 406, and the protective box 402 is disposed on the rotating assembly 404. On component 404, a groove 600 is provided on the protective box 402, and a control handle 403 is located in the groove 600. A rotating assembly 404 is used to rotate the protective box 402, and a driving component 405 is used to drive the rotating assembly 404 to rotate. The rotating assembly 404 includes a first connecting block 4041, a rotating block 4042, a fixing plate 4043, a first rotating plate 4044, a second rotating plate 4045, a second connecting block 4046, and a first rotating shaft 4047. A first through hole 500 is provided on the support arm 401. Connecting block 4041 is fixedly connected to protective box 402, fixing plate 4043 is fixedly connected to mounting plate 406, rotating block 4042 is rotatably connected to fixing plate 4043, and rotating block 4042 is fixedly connected to first connecting block 4041. Second connecting block 4046 is fixedly connected to driving component 405. One end of first rotating plate 4044 is rotatably connected to rotating block 4042, and the other end of first rotating plate 4044 is rotatably connected to second connecting block 4046. First rotating plate 4044 is close to the first connecting block 4042. One end of the two connecting blocks 4046 is disposed on the first rotating shaft 4047, one end of the second rotating plate 4045 is rotatably connected to the fixed plate 4043, and the other end of the second rotating plate 4045 is disposed on the first rotating shaft 4047. The driving component 405 includes a telescopic rod 4051 and a second fixed frame 4052. The second fixed frame 4052 is fixedly connected to the mounting plate 406, the telescopic rod 4051 is rotatably connected to the second fixed frame 4052, and the output shaft of the telescopic rod 4051 is fixedly connected to the second connecting block 4046.

[0029] With this setup, when a user needs to use the electric wheelchair, they first need to rotate the protective box 402 to expose the control handle 403. Then, the user needs to activate the telescopic rod 4051. As the output shaft of the telescopic rod 4051 retracts, it drives the second connecting block 4046 to move away from the control handle 403. With this movement, the second connecting block 4046 drives the first rotating plate 4044 to rotate. Since one end of the second rotating plate 4045 is fixedly connected to one end of the first rotating plate 4044 via the first rotating shaft 4047, the rotation of the first rotating plate 4044 also drives the second rotating plate 4045 to rotate. Furthermore, since the other end of the first rotating plate 4044 is rotatably connected to the rotating block 4042, the rotation of the first rotating plate 4044 drives the rotating block 4042 to rotate in a fixed position. The fixed plate 4043 rotates, and as the rotating block 4042 gradually rotates, the protective box 402 rotates along with the rotating block 4042. At the same time, the first connecting block 4041 slides on the first through hole 500, exposing the control handle 403 in the groove 600. The user can then control the electric wheelchair through the control handle 403. When the user stops using the electric wheelchair, the telescopic rod 4051 is activated again. The output shaft of the telescopic rod 4051 moves toward the control handle 403, causing the protective box 402 to rotate and positioning the control handle 403 in the groove 600. This allows the protective mechanism to protect the control device of the electric wheelchair when the user is not using it, preventing damage to the control device due to external factors, thus improving safety. It also prevents the elderly from accidentally touching the control device when not using the electric wheelchair, causing the electric wheelchair to start and creating a safety hazard.

[0030] Please refer to Figure 4 and Figure 6 This invention provides an electric wheelchair with a folding assembly 700 including a first folding plate 701, a connecting seat 702, and a telescopic plate 703. The connecting seat 702 is fixedly connected to the bottom surface of the backrest 800. One end of the first folding plate 701 and the telescopic plate 703 are rotatably connected to the connecting seat 702, and the other end of the first folding plate 701 and the telescopic plate 703 are rotatably connected to the electric chair body 100. The electric chair body 100 is provided with a storage box 900. Multiple sets of support arms 401, drive wheels 200, and steering wheels 300 are provided. The control handle 403 controls the steering wheels 300 to turn and controls the drive wheels 200 to move forward and backward.

[0031] With this design, when staff need to use the electric wheelchair, they first separate the rear seat backrest 800 from the electric chair body 100 using the first folding plate 701 and the telescopic plate 703. Then, the staff sits on the rear seat backrest 800, saving space: the volume is greatly reduced after folding, making it convenient to store at home and easy to carry when traveling or in transportation. This makes travel convenient and easy to carry, reducing transportation pressure and enabling people with mobility impairments to travel independently. It is easy to carry and move, and highly adaptable. The folding function allows the electric wheelchair to better adapt to various environments and occasions, such as public transportation, hotel rooms, theaters and other public places.

[0032] Working principle: When a worker needs to use the electric wheelchair, they first separate the rear seat backrest 800 from the electric chair body 100 using the first folding plate 701 and the telescopic plate 703. Then, the worker sits on the rear seat backrest 800 and rotates the protective box 402 to expose the control handle 403. The user then activates the telescopic rod 4051. When the output shaft of the telescopic rod 4051 retracts, it drives the second connecting block 4046 to move away from the control handle 403. As the second connecting block 4046 moves, it drives the first rotating plate 4044 to rotate. Because one end of the second rotating plate 4045 is fixedly connected to one end of the first rotating plate 4044 via the first rotating shaft 4047, the first rotating plate 4044 rotates simultaneously with the first rotating plate 4044. This will also cause the second rotating plate 4045 to rotate. Since the other end of the first rotating plate 4044 is rotatably connected to the rotating block 4042, as 40444 rotates, the first rotating plate 4044 drives the rotating block 4042 to rotate on the fixed plate 4043. As the rotating block 4042 gradually rotates, the protective box 402 rotates along with the rotating block 4042. At the same time, the first connecting block 4041 will slide on the first through hole 500, exposing the control handle 403 in the groove 600. The user can then control the electric wheelchair through the control handle 403. When the user stops using the electric wheelchair, the telescopic rod 4051 is activated again. The output shaft of the telescopic rod 4051 moves toward the control handle 403, causing the protective box 402 to rotate and positioning the control handle 403 in the groove 600.

[0033] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An electrically powered wheelchair, characterised in that, Include: Electric chair body (100), drive wheel (200), steering wheel (300), rear chair back (800), protection mechanism (400) and folding assembly (700), the drive wheel (200) and the steering wheel (300) are all rotationally connected on the electric chair body (100), the folding assembly (700) is arranged on the upper surface of the electric chair body (100), the rear chair back (800) is arranged on the folding assembly (700), the protection mechanism (400) is used for protecting the control device of electric wheelchair, the folding assembly (700) is used for supporting the rear chair back (800) and folding electric wheelchair.

2. The electrically powered wheelchair of claim 1, wherein: The protection mechanism (400) includes support arm (401), protection box (402), control handle (403), rotating assembly (404), drive (405) and mounting plate (406), the support arm (401) is arranged on both sides of the rear chair back (800), the control handle (403) is arranged on the support arm (401), the mounting plate (406) is arranged on the support arm (401), the rotating assembly (404) and the drive (405) are all arranged on the mounting plate (406), the protection box (402) is arranged on the rotating assembly (404), the protection box (402) is provided with recess (600), and the control handle (403) is located in the recess (600), the rotating assembly (404) is used for rotating the protection box (402), the drive (405) is used for driving the rotating assembly (404) to rotate.

3. The electrically powered wheelchair of claim 2, wherein: The rotating component (404) comprises a first connecting block (4041), a rotating block (4042), a fixed plate (4043), a first rotating plate (4044), a second rotating plate (4045), a second connecting block (4046) and a first rotating shaft (4047), a first through hole (500) is formed in the supporting arm (401), the first connecting block (4041) is fixedly connected to the protection box (402), the fixed plate (4043) is fixedly connected to the mounting plate (406), the rotating block (4042) is rotatably connected to the fixed plate (4043), and the rotating block (4042) is fixedly connected to the first connecting block (4041), the second connecting block (4046) is fixedly connected to the driving piece (405), one end of the first rotating plate (4044) is rotatably connected to the rotating block (4042), the other end of the first rotating plate (4044) is rotatably connected to the second connecting block (4046), the first rotating shaft (4047) is arranged on one end of the first rotating plate (4044) close to the second connecting block (4046), and one end of the second rotating plate (4045) is rotatably connected to the fixed plate (4043).

4. The electrically powered wheelchair of claim 3, wherein: The driving piece (405) comprises a telescopic rod (4051) and a second fixing frame (4052), the second fixing frame (4052) is fixedly connected to the mounting plate (406), and the telescopic rod (4051) is rotatably connected to the second fixing frame (4052).

5. The electrically powered wheelchair of claim 4, wherein: The folding component (700) comprises a first folding plate (701), a connecting seat (702) and a telescopic plate (703), the connecting seat (702) is fixedly connected to the bottom surface of the rear chair back (800), one end of the first folding plate (701) and the telescopic plate (703) is rotatably connected to the connecting seat (702), and the other end of the first folding plate (701) and the telescopic plate (703) is rotatably connected to the electric chair body (100).

6. The electrically powered wheelchair of claim 5, wherein: The electric chair body (100) is provided with a storage box (900).

7. The electrically powered wheelchair of claim 6, wherein: The supporting arm (401), the driving wheel (200) and the steering wheel (300) are provided with multiple groups, and the control handle (403) controls the steering wheel (300) to steer and controls the driving wheel (200) to advance and retreat.

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