Electric wheelchair

Abstract

The utility model discloses an electric wheelchair which comprises a wheelchair body, the wheelchair body comprises a backrest assembly and a power-assisted driving assembly, and the electric wheelchair further comprises a control assembly, a sensing assembly and armrest assemblies which are arranged on the top of the backrest assembly. The armrest assembly can be connected with the control assembly in a relative transmission manner; the control assembly is provided with a first induction piece and a second induction piece, and the first induction piece and the second induction piece are electrically connected with the power-assisted driving assembly through the control assembly. The induction assembly is connected with the handrail assembly, and when the induction assembly rotates along with the handrail assembly, the induction end of the induction assembly is opposite to the first induction piece or the second induction piece so that the power-assisted driving assembly can switch the working mode. The working modes of the electric wheelchair can be switched by turning over the armrest assemblies, and the functions of the electric wheelchair are enriched.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchairs, in particular to an electric wheelchair. Background Art

[0002] As the population ages, the demand for electric wheelchairs is increasing day by day. Currently, the electric wheelchairs on the market generally have single functions, with only the basic power-assisting function of remote control to control the movement of the wheelchair.

[0003] Existing electric wheelchairs generally provide power by controlling two wheel hub motors to achieve the movement of the wheelchair in all directions, which can meet the needs of some people with inconvenient leg movements. However, for people who are in a semi-disabled state or need rehabilitation to recover their walking, in addition to needing a wheelchair to meet their daily needs, they also need equipment that can assist them in rehabilitation. However, the current wheelchairs cannot achieve the function of assisting such people in rehabilitation, so users need to equip themselves with additional equipment to assist in rehabilitation, which is inconvenient to use and takes up a lot of space. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an electric wheelchair and enrich the functions of the electric wheelchair.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] An electric wheelchair comprises a wheelchair body, wherein the wheelchair body comprises a backrest assembly and a power-assisted driving assembly, and further comprises a control assembly, a sensing assembly and an armrest assembly arranged on the top of the backrest assembly;

[0007] The armrest assembly can be connected to the control assembly in a relatively transmission manner;

[0008] The control component is provided with a first induction member and a second induction member, and the first induction member and the second induction member are electrically connected to the power-assisted driving component through the control component;

[0009] The sensing component is connected to the armrest component. When the sensing component rotates with the armrest component, the sensing end of the sensing component is opposite to the first sensing member or the second sensing member, so that the power-assisted driving component switches the working mode.

[0010] Further, when an angle is formed between the armrest assembly and the face portion of the backrest assembly, the sensing end of the sensing assembly is opposite to the first sensing member.

[0011] Further, when the face portions of the armrest assembly and the backrest assembly are parallel to each other, the sensing end of the sensing assembly is opposite to the second sensing element.

[0012] Furthermore, the first sensing element and the second sensing element are both Hall sensors.

[0013] Further, the control assembly includes a base and at least two shaft covers arranged opposite to each other;

[0014] The shaft covers are sequentially arranged along the length of the base, and a rotation groove for the sensing component to rotate is formed between adjacent shaft covers;

[0015] A rotation cavity for rotationally connecting the armrest assembly is formed between the shaft cover and the base.

[0016] Furthermore, in the length direction of the base, the first induction member and the second induction member are arranged on the side wall of the rotating chamber.

[0017] Furthermore, the armrest assembly is C-shaped.

[0018] Furthermore, the induction component includes a limit block and a magnet;

[0019] The limit block is connected to the circumferential side wall of the armrest assembly, so that the limit block is eccentrically arranged relative to the rotation center of the armrest assembly, and the magnet is connected to the limit block.

[0020] Further, the wheelchair body comprises a left armrest and a right armrest which are arranged opposite to each other;

[0021] A remote control assembly is provided at one end of the left armrest or the right armrest away from the backrest assembly, and the remote control assembly is electrically connected to the power-assisted driving assembly.

[0022] Furthermore, the wheelchair body also includes a chair frame and a seat assembly;

[0023] The seat assembly and the backrest assembly are sequentially arranged on the chair frame, and an angle is formed between the seat assembly and the backrest assembly;

[0024] The control assembly is arranged at one end of the backrest assembly away from the seat assembly.

[0025] The beneficial effect of the utility model is that by arranging a sensing component on the armrest component and arranging a control component on the top of the backrest component, during the rotation of the armrest component relative to the control component, the sensing component is opposite to the first sensing component or the second sensing component, the working state of the power-assisted driving component is switched, and the relative position of the armrest component is changed at the same time. When the power-assisted driving component is in the rehabilitation training mode, it can be used to assist the user in rehabilitation, so that the functions of the electric wheelchair are enriched, multiple functions are integrated, and the occupied space is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The structure of the electric wheelchair in the utility model is schematically shown in the rehabilitation training mode. Figure 1 ;

[0027] Figure 2 It is a schematic diagram of the partial structure of the electric wheelchair in the utility model in the rehabilitation training mode;

[0028] Figure 3 This is a schematic diagram of the structure of the electric wheelchair in the utility model in the power-assist mode;

[0029] Figure 4 It is a schematic diagram of the partial structure of the electric wheelchair in the utility model in the power-assist mode;

[0030] Figure 5 The structure of the electric wheelchair in the utility model is schematically shown in the rehabilitation training mode. Figure 2 ;

[0031] Figure 6 The structure of the electric wheelchair in the utility model is schematically shown in the rehabilitation training mode. Figure 3 ;

[0032] Figure 7 It is an exploded view of the control component, handrail component and sensor component in the utility model.

[0033] Description of labels:

[0034] 1. Wheelchair body; 11. Backrest assembly; 12. Power-assisted drive assembly; 13. Left armrest; 14. Right armrest; 15. Remote control assembly; 16. Chair frame; 17. Seat assembly;

[0035] 2. Control assembly; 21. First induction member; 22. Second induction member; 23. Base; 25. Shaft cover; 26. Rotation slot; 27. Rotation chamber;

[0036] 3. Induction component; 31. Limit block; 32. Magnet;

[0037] 4. Armrest assembly. DETAILED DESCRIPTION

[0038] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0039] Please refer to Figure 1-Figure 7An electric wheelchair includes a wheelchair body 1, the wheelchair body 1 includes a backrest assembly 11 and a power-assisted driving assembly 12, and also includes a control assembly 2, a sensing assembly 3 and an armrest assembly 4 arranged on the top of the backrest assembly 11; the armrest assembly 4 can be connected to the control assembly 2 in a relatively transmission manner; the control assembly 2 has a first sensing member 21 and a second sensing member 22, and the first sensing member 21 and the second sensing member 22 are electrically connected to the power-assisted driving assembly 12 through the control assembly 2; the sensing member 3 is connected to the armrest assembly 4, and when the sensing member 3 rotates with the armrest assembly 4, the sensing end of the sensing member 3 is opposite to the first sensing member 21 or the second sensing member 22, so that the power-assisted driving assembly 12 switches the working mode. Among them, the power-assisted driving assembly 12 is a driving motor.

[0040] It can be understood that by arranging the sensing component 3 on the armrest component 4 and arranging the control component 2 on the top of the backrest component 11, during the rotation of the armrest component 4 relative to the control component 2, the sensing component 3 is relative to the first sensing element 21 or the second sensing element 22, the working state of the power-assisted drive component 12 is switched, and the relative position of the armrest component 4 is changed. When the power-assisted drive component 12 is in the rehabilitation training mode, it can be used to assist the user in rehabilitation, thereby enriching the functions of the electric wheelchair, realizing the integration of multiple functions, and reducing the occupied space.

[0041] In some embodiments, when an angle is formed between the armrest assembly 4 and the face of the backrest assembly 11, the sensing end of the sensing assembly 3 is opposite to the first sensing member 21. Preferably, the angle is 90°. When the armrest assembly 4 is in this state, since the sensing assembly 3 is directly opposite to the first sensing member 21, the control assembly 2 controls the power-assisted drive assembly 12 to enter the rehabilitation training mode, that is, the power-assisted drive assembly 12 provides resistance to the wheelchair body 1, so that when the user pushes the electric wheelchair forward, there is a certain amount of resistance, so as to prevent the electric wheelchair from moving too fast and causing the user to fall. And since the armrest assembly 4 forms an angle with the backrest assembly 11, it is convenient for the user to move the armrest assembly 4 by hand.

[0042] In some embodiments, when the armrest assembly 4 and the surface of the backrest assembly 11 are parallel to each other, the sensing end of the sensing assembly 3 is opposite to the second sensing element 22. In this state, the control assembly 2 will control the power-assisted drive assembly 12 to enter the power-assisted mode. At this time, the armrest assembly 4 is stored, and the user can move on the electric wheelchair to avoid the armrest assembly 4 affecting the user's riding.

[0043] In some embodiments, the sensing assembly 3 includes a limit block 31 and a magnet 32; the limit block 31 is connected to the circumferential side wall of the armrest assembly 4, so that the limit block 31 is eccentrically arranged relative to the rotation center of the armrest assembly 4, and the magnet 32 ​​is connected to the limit block 31. Specifically, the limit block 31 is welded to the circumferential side wall of the armrest assembly 4, and the magnet 32 ​​is embedded in the side of the limit block 31 facing the plane where the first sensing element 21 and the second sensing element 22 are located. The limit block 31 is eccentrically arranged to enable the magnet 32 ​​to move more accurately with the armrest assembly 4, so that the armrest assembly 4 can be opposite to the corresponding sensing element after rotating to the specified position, thereby ensuring that the power-assisted drive assembly 12 can enter the corresponding mode.

[0044] In some embodiments, the first sensing element 21 and the second sensing element 22 are both Hall sensors. Position sensing is achieved through the cooperation between the magnet 32 ​​and the Hall sensor, thereby improving the position sensing accuracy of the armrest assembly 4.

[0045] In some embodiments, the control assembly 2 includes a base 23, a controller, and at least two shaft covers 25 arranged opposite to each other; the controller is arranged in the base 23, the shaft covers 25 are arranged in sequence along the length of the base 23, and a rotation groove 26 for the rotation of the sensing assembly 3 is formed between adjacent shaft covers 25; a rotation cavity 27 for the rotation connection of the armrest assembly 4 is formed between the shaft cover 25 and the base 23. Specifically, a power-assisting button electrically connected to the controller is also provided on the base 23. When the sensing end of the sensing assembly 3 is opposite to the second sensing element 22, the power-assisting button is pressed, and the power-assisting driving assembly 12 can fully enter the power-assisting mode. The setting of the power-assisting button is used to play a safety protection role. When the user sits on the electric wheelchair, the electric wheelchair can enter the power-assisting state by pressing the power-assisting button.

[0046] In some embodiments, in the length direction of the base 23, the first sensing member 21 and the second sensing member 22 are disposed on the side wall of the rotating cavity 27, and the side wall should be disposed opposite to the magnet 32 ​​to improve the sensing accuracy.

[0047] In some embodiments, the armrest assembly 4 is C-shaped to facilitate flipping and holding.

[0048] In some embodiments, the wheelchair body 1 includes a left armrest 13 and a right armrest 14 arranged opposite to each other; a remote control assembly 15 is provided at one end of the left armrest 13 or the right armrest 14 away from the backrest assembly 11 , and the remote control assembly 15 is electrically connected to the power-assisted drive assembly 12 .

[0049] In some embodiments, the wheelchair body 1 also includes a chair frame 16 and a seat assembly 17; the seat assembly 17 and the backrest assembly 11 are arranged on the chair frame 16 in sequence, and the angle formed between the seat assembly 17 and the backrest assembly 11 is greater than 90° and less than 120°; the control assembly 2 is arranged at one end of the backrest assembly 11 away from the seat assembly 17.

[0050] The working principle of the utility model is:

[0051] When the electric wheelchair is in the power-assist mode, the armrest assembly 4 and the surface of the backrest assembly 11 are parallel to each other, and the magnet 32 ​​is opposite to the second induction element 22;

[0052] When the electric wheelchair needs to be switched to the rehabilitation training mode, the armrest assembly 4 is flipped over to lift the armrest assembly 4 upward, and the magnet 32 ​​is opposite to the first induction element 21, and the power-assisted driving assembly 12 enters the rehabilitation training mode.

[0053] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. An electric wheelchair, comprising a wheelchair body, wherein the wheelchair body comprises a backrest assembly and a power-assisted drive assembly, characterized in that: Also included are a control assembly, a sensing assembly and an armrest assembly disposed on the top of the backrest assembly; The armrest assembly can be connected to the control assembly in a relatively transmission manner; The control component is provided with a first induction member and a second induction member, and the first induction member and the second induction member are electrically connected to the power-assisted driving component through the control component; The sensing component is connected to the armrest component. When the sensing component rotates with the armrest component, the sensing end of the sensing component is opposite to the first sensing member or the second sensing member, so that the power-assisted driving component switches the working mode.

2. An electric wheelchair according to claim 1, characterized in that: When an angle is formed between the armrest component and the face portion of the backrest component, the sensing end of the sensing component is opposite to the first sensing member.

3. The electric wheelchair according to claim 1, characterized in that: When the face portions of the armrest assembly and the backrest assembly are parallel to each other, the sensing end of the sensing assembly is opposite to the second sensing member.

4. The electric wheelchair according to claim 1, characterized in that: The first induction element and the second induction element are both Hall sensors.

5. The electric wheelchair according to claim 1, characterized in that: The control assembly includes a base and at least two shaft covers arranged opposite to each other; The shaft covers are sequentially arranged along the length of the base, and a rotation groove for the sensing component to rotate is formed between adjacent shaft covers; A rotation cavity for rotationally connecting the armrest assembly is formed between the shaft cover and the base.

6. The electric wheelchair according to claim 5, characterized in that: In the length direction of the base, the first induction member and the second induction member are arranged on the side wall of the rotating chamber.

7. The electric wheelchair according to claim 1, characterized in that: The armrest assembly is C-shaped.

8. The electric wheelchair according to claim 1, characterized in that: The induction component includes a limit block and a magnet; The limit block is connected to the circumferential side wall of the armrest assembly, so that the limit block is eccentrically arranged relative to the rotation center of the armrest assembly, and the magnet is connected to the limit block.

9. The electric wheelchair according to claim 1, characterized in that: The wheelchair body comprises a left armrest and a right armrest which are arranged opposite to each other; A remote control assembly is provided at one end of the left armrest or the right armrest away from the backrest assembly, and the remote control assembly is electrically connected to the power-assisted driving assembly.

10. The electric wheelchair according to claim 1, characterized in that: The wheelchair body also includes a chair frame and a seat assembly; The seat assembly and the backrest assembly are sequentially arranged on the chair frame, and an angle is formed between the seat assembly and the backrest assembly; The control assembly is arranged at one end of the backrest assembly away from the seat assembly.

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