Adjustable electric wheelchair

Abstract

The utility model discloses an adjustable electric wheelchair which comprises a base, walking wheels are arranged at the lower end of the base, a connecting seat is correspondingly arranged at the upper end of the base, a stool is fixedly connected to the upper end of the connecting seat, a backrest is arranged at one end of the outer side of the stool, and a positioning frame is fixedly connected to the outer end of the backrest. A positioning frame is fixedly connected to the inner side of the base, a headrest is movably connected to the positioning frame, a mounting plate is fixedly connected to one end of the inner side of the base, a first driving motor is fixedly connected to the mounting plate, and a first connecting rod can be driven to move by arranging the first driving motor, a first lead screw and a first threaded block; and the automatic lifting function of the electric wheelchair can be achieved through rotation operation between the electric wheelchair and the second connecting rod, so that the adjustability of the whole electric wheelchair can be improved, meanwhile, adjustable hand supports are arranged at the two ends of the stool, users with different requirements can be met, and therefore the comfort and convenience of the whole electric wheelchair are improved.

Description

Technical Field

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

[0002] Electric wheelchairs are upgraded from traditional manual wheelchairs by adding high-performance power drive devices, intelligent control devices, batteries and other components. Equipped with a manually operated intelligent controller, the new generation of intelligent wheelchairs can drive the wheelchair to complete multiple functions such as forward, backward, steering, standing, and lying flat. It is a high-tech product that combines modern precision machinery, intelligent numerical control, engineering mechanics and other fields;

[0003] The seat height of the wheelchairs currently in use is mostly fixed. For users of different body shapes, the seat height may be too high or too low. If the seat is too high, the user's feet may be suspended in the air and cannot step on the footboard. If the seat is too low, the user's legs and feet may be shrunk together. Both of these situations will cause poor blood circulation in the user's legs. After sitting in the wheelchair for a long time, the legs and feet are prone to numbness, which seriously affects the user's comfort. Utility Model Content

[0004] The utility model aims to provide an adjustable electric wheelchair, which solves the problem that the electric wheelchairs in the prior art are all fixed structures and their height cannot be adjusted.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an adjustable electric wheelchair, comprising a base, a running wheel is arranged at the lower end of the base, a connecting seat is arranged at the upper end of the base, a seat is fixedly connected to the upper end of the connecting seat, a backrest is arranged at one outer end of the seat, a positioning frame is fixedly connected to the outer end of the backrest, and a headrest is movably connected to the positioning frame;

[0006] One inner end of the base is fixedly connected with a mounting plate, a first driving motor is fixedly connected to the mounting plate, an output end of the first driving motor is fixedly connected with a first lead screw, and the other outer end of the bench is provided with a footrest.

[0007] As a further description of the above technical solution: the two inner ends of the base are fixedly connected with a second sliding member, the sliding rod is slidably connected inside the second sliding member, and the sliding rod is rotatably connected with a first connecting rod.

[0008] As a further description of the above technical solution: the other end of the first connecting rod is movably connected to a first sliding member, and the other end of the first sliding member is fixedly connected to one end of the bottom of the connecting seat.

[0009] As a further description of the above technical solution: the bottom of the connecting seat and the other inner end of the base are fixedly connected with a rotating shaft, the rotating shaft is rotatably connected with a second connecting rod, and the first connecting rod is rotatably connected to the second connecting rod.

[0010] As a further description of the above technical solution: the outer end of the bench is fixedly connected to a second drive motor, and the output end of the second drive motor is penetrated and inwardly provided with a second lead screw.

[0011] As a further description of the above technical solution: a fixing frame is threadedly connected to the second screw, slots are provided at both ends of the bench, a movable frame is movably connected to the upper end of the fixing frame, and a hand rest is fixedly connected to the upper end of the movable frame.

[0012] As a further description of the above technical solution: a third drive motor is fixedly connected to the inside of the fixed frame, a screw is fixedly connected to the output end of the third drive motor, the screw is threadedly connected to the movable frame, a slide groove is provided on the outside of the movable frame, a slider is fixedly connected to the inside of the fixed frame, and the slider is slidably connected to the inside of the slide groove.

[0013] The utility model has the following beneficial effects:

[0014] 1. Compared with the prior art, the adjustable electric wheelchair can drive the first connecting rod to move by providing a first driving motor, a first lead screw and a first threaded block, and can realize the automatic lifting function of the electric wheelchair by rotating with the second connecting rod, thereby improving the adjustability of the entire electric wheelchair. At the same time, adjustable hand rests are provided at both ends of the seat to meet the needs of users with different needs, thereby improving the comfort and convenience of the entire electric wheelchair.

[0015] 2. Compared with the prior art, this adjustable electric wheelchair can provide good support for the user by providing a backrest, a headrest, an armrest and a footrest, thereby ensuring the comfort of the user when using the electric wheelchair, and the armrest can automatically adjust the height, thereby improving its adjustable function.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2It is a structural schematic diagram of a height adjustment component of the utility model.

[0020] Figure 3 This utility model Figure 1 Schematic diagram of the structure of A.

[0021] Figure 4 It is a schematic diagram of the structure of the hand rest adjustment assembly of the utility model;

[0022] Figure 5 It is a schematic diagram of the internal structure of the fixing frame of the utility model.

[0023] Legend:

[0024] 1. Base; 2. Walking wheels; 3. Stool; 4. Positioning frame; 5. Backrest; 6. Headrest; 7. Handrest; 8. Fixed frame; 9. Slot; 10. Connecting seat; 11. Footrest; 12. First lead screw; 13. First threaded block; 14. Mounting plate; 15. First drive motor; 16. Rotating shaft; 17. First sliding member; 18. First connecting rod; 19. Second connecting rod; 20. Second sliding member; 21. Sliding rod; 22. Second drive motor; 23. Second lead screw; 24. Sliding groove; 25. Sliding block; 26. Screw; 27. Third drive motor; 28. Movable frame. DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0026] Reference Figure 1-5 The utility model provides an embodiment of an adjustable electric wheelchair, comprising a base 1, a running wheel 2 is arranged at the lower end of the base 1, and the running wheel 2 can ensure the normal walking of the entire electric wheelchair, and a connecting seat 10 is correspondingly arranged at the upper end of the base 1, and a seat 3 is fixedly connected to the upper end of the connecting seat 10, and a backrest 5 is arranged at one end of the outer side of the seat 3, and a positioning frame 4 is fixedly connected to the outer end of the backrest 5, and a headrest 6 is movably connected to the positioning frame 4, and the seat 3, the backrest 5 and the headrest 6 can provide a comfortable experience for the user;

[0027] A mounting plate 14 is fixedly connected to one end of the inner side of the base 1, a first drive motor 15 is fixedly connected to the mounting plate 14, a first lead screw 12 is fixedly connected to the output end of the first drive motor 15, and a footrest 11 is provided at the other end of the outer side of the stool 3, and the first lead screw 12 can be driven to rotate by starting the first drive motor 15;

[0028] The first threaded block 13 is threadedly connected to the first lead screw 12, and the two ends of the first threaded block 13 are fixedly connected to the sliding rod 21, and the two ends of the inner side of the base 1 are fixedly connected to the second sliding member 20, and the sliding rod 21 is slidably connected to the inside of the second sliding member 20, and the first connecting rod 18 is rotatably connected to the sliding rod 21. The other end of the first connecting rod 18 is movably connected to the first sliding member 17, and the other end of the first sliding member 17 is fixedly connected to one end of the bottom of the connecting seat 10. The bottom of the connecting seat 10 and the other end of the inner side of the base 1 are fixedly connected to the rotating shaft 16, and the second connecting rod 19 is rotatably connected to the rotating shaft 16. The first connecting rod 18 and the second connecting rod 19 are rotatably connected. Under the action of the threaded connection, the first threaded block 13 can drive the sliding rod 21 to move, and through the rotation connection between the sliding rod 21 and the first connecting rod 18, the first connecting rod 18 can be driven to adjust its position, and under the rotation of the rotating shaft 16 and the two connecting rods, cross lifting can be achieved, and the automatic lifting function of the electric wheelchair can be realized, thereby improving the adjustability of the entire electric wheelchair;

[0029] The outer end of the bench 3 is fixedly connected to a second drive motor 22, and a second lead screw 23 is provided inwardly through the output end of the second drive motor 22. The second lead screw 23 can be driven to rotate by starting the second drive motor 22;

[0030] The second screw 23 is threadedly connected with a fixing frame 8, and slots 9 are provided at both ends of the bench 3. The upper end of the fixing frame 8 is movably connected with a movable frame 28, and the upper end of the movable frame 28 is fixedly connected with a hand rest 7. Under the action of the second screw 23, the position of the fixing frame 8 can be adjusted, thereby adjusting the lateral position of the hand rest 8.

[0031] A third driving motor 27 is fixedly connected to the inside of the fixed frame 8, and a screw 26 is fixedly connected to the output end of the third driving motor 27. The screw 26 is threadedly connected to the movable frame 28. A slide groove 24 is provided on the outer side of the movable frame 28. A slider 25 is fixedly connected to the inner side of the fixed frame 8. The slider 25 is slidably connected to the inside of the slide groove 24. Starting the third driving motor 27 can drive the screw 26 to rotate. Under the action of the threaded connection, the movable frame 28 can drive the upper hand rest 7 to adjust the height to ensure the user's use.

[0032] Working principle: When the device is in use, the user sits on the bench 3. The top of the bench 3 is made of polyurethane material. Polyurethane material is a high-quality wheelchair material with the main characteristics of being soft, comfortable, elastic and durable, which improves the comfort of the user. The position of the hand rest 7 can be adjusted according to different users. Starting the second drive motor 22 can drive the second lead screw 23 to rotate. Under the action of the second lead screw 23, the position of the fixing frame 8 can be adjusted, thereby adjusting the lateral position of the hand rest 8. Then starting the third drive motor 27 can drive the screw 26 to rotate. In the threaded connection, The movable frame 28 can be used to drive the upper hand rest 7 to adjust the height to ensure the user's use. When the height of the wheelchair needs to be adjusted, starting the first drive motor 15 can drive the first screw 12 to rotate, and under the action of the threaded connection, the first threaded block 13 can drive the slide rod 21 to move, and through the rotational connection between the slide rod 21 and the first connecting rod 18, the position of the first connecting rod 18 can be adjusted, and under the rotation of the rotating shaft 16 and the two connecting rods, cross lifting can be achieved, realizing the automatic lifting function of the electric wheelchair, thereby improving the adjustability of the entire electric wheelchair.

[0033] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An adjustable electric wheelchair, comprising a base (1), characterized in that: A walking wheel (2) is arranged at the lower end of the base (1), a connecting seat (10) is correspondingly arranged at the upper end of the base (1), a stool (3) is fixedly connected to the upper end of the connecting seat (10), a backrest (5) is arranged at one outer end of the stool (3), a positioning frame (4) is fixedly connected to the outer end of the backrest (5), and a headrest (6) is movably connected to the positioning frame (4); One end of the inner side of the base (1) is fixedly connected to a mounting plate (14), a first drive motor (15) is fixedly connected to the mounting plate (14), an output end of the first drive motor (15) is fixedly connected to a first lead screw (12), and the other end of the outer side of the bench (3) is provided with a footrest (11).

2. The adjustable electric wheelchair according to claim 1, characterized in that: The first lead screw (12) is threadedly connected to a first threaded block (13), and two ends of the first threaded block (13) are fixedly connected to sliding rods (21).

3. The adjustable electric wheelchair according to claim 2, characterized in that: The two ends of the inner side of the base (1) are fixedly connected to a second sliding member (20), the sliding rod (21) is slidably connected to the inside of the second sliding member (20), and the sliding rod (21) is rotatably connected to a first connecting rod (18).

4. The adjustable electric wheelchair according to claim 3, characterized in that: The other end of the first connecting rod (18) is movably connected to a first sliding member (17), and the other end of the first sliding member (17) is fixedly connected to one end of the bottom of the connecting seat (10).

5. The adjustable electric wheelchair according to claim 3, characterized in that: The bottom of the connecting seat (10) and the other inner end of the base (1) are both fixedly connected with a rotating shaft (16), and a second connecting rod (19) is rotatably connected to the rotating shaft (16), and the first connecting rod (18) is rotatably connected to the second connecting rod (19).

6. The adjustable electric wheelchair according to claim 1, characterized in that: The outer end of the bench (3) is fixedly connected to a second drive motor (22), and a second lead screw (23) is provided inwardly through the output end of the second drive motor (22).

7. The adjustable electric wheelchair according to claim 6, characterized in that: A fixing frame (8) is threadedly connected to the second lead screw (23), two ends of the bench (3) are provided with slots (9), the upper end of the fixing frame (8) is movably connected to a movable frame (28), and the upper end of the movable frame (28) is fixedly connected to a hand rest (7).

8. The adjustable electric wheelchair according to claim 7, characterized in that: A third drive motor (27) is fixedly connected inside the fixed frame (8), a screw rod (26) is fixedly connected to the output end of the third drive motor (27), the screw rod (26) is threadedly connected to the movable frame (28), a slide groove (24) is provided on the outer side of the movable frame (28), a slider (25) is fixedly connected to the inner side of the fixed frame (8), and the slider (25) is slidably connected inside the slide groove (24).

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