CN218979512U - Electric wheelchair - Google Patents
Electric wheelchair Download PDFInfo
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- CN218979512U CN218979512U CN202223045498.2U CN202223045498U CN218979512U CN 218979512 U CN218979512 U CN 218979512U CN 202223045498 U CN202223045498 U CN 202223045498U CN 218979512 U CN218979512 U CN 218979512U
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Abstract
The utility model discloses an electric wheelchair, which comprises a frame, wherein a driving component for driving a rear wheel to rotate is arranged at the bottom of the frame with a front wheel and a rear wheel, handrail plates are respectively arranged at the left side and the right side of the frame, a brake mechanism is arranged at the opposite sides of the two handrail plates, the brake mechanism further comprises a lower pressing plate, a fixed plate, a connecting frame, a first friction plate and a second friction plate, the fixed plate with a through hole is arranged on the side wall of the frame, the upper end of the connecting frame passes through the through hole to be fixedly connected with the lower pressing plate, a first spring is arranged between the lower pressing plate and the fixed plate and sleeved on the outer wall of the connecting frame at the end, a buffer box is arranged at the end part of the connecting frame close to the front wheel and the rear wheel, the lower end of the buffer box is connected with the first friction plate, and the lower end of the connecting frame is fixedly connected with the second friction plate. The wheelchair braking control method and device effectively avoid the situation that the wheelchair turns over on the basis of realizing braking of the wheelchair, shorten the braking distance and improve the smoothness of the braking process.
Description
Technical Field
The utility model relates to an electric wheelchair, and belongs to the technical field of electric wheelchairs.
Background
Manual wheelchairs are those requiring a person's strength to move them. The manual wheelchair may be folded, stored or placed on the vehicle, although modern wheelchairs may likewise be rigid frames. The general manual wheelchair is a wheelchair sold by general medical equipment, is approximately in the shape of a chair, is provided with four wheels, is larger in rear wheel, is provided with a hand pushing wheel, is also provided with a brake on the rear wheel, is smaller in front wheel and is used for steering, and is provided with an anti-tilting wheel at the rear of the wheelchair. An electric wheelchair is a wheelchair to which electric motors and means for navigation control are added. Typically a small joystick is mounted on the armrest, rather than the manually powered wheelchair movement.
In the prior art, a braking mechanism is arranged for braking operation to prevent the wheelchair from slipping, but if the rear wheels are directly locked due to incorrect operation in the running process of the electric wheelchair, the risk of the wheelchair turning over exists. To this end, we propose an electric wheelchair to solve this problem.
Disclosure of Invention
The utility model aims to provide an electric wheelchair, which effectively avoids the condition of turning over the wheelchair, shortens the braking distance and improves the smoothness of the braking process on the basis of realizing the braking of the wheelchair.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an electric wheelchair comprises a frame, wherein a driving assembly for driving a rear wheel to rotate is arranged at the bottom of the frame with front wheels and rear wheels, a handrail plate is respectively arranged at the left side and the right side of the frame, and a brake mechanism is arranged at the opposite sides of the two handrail plates;
the brake mechanism further comprises a lower pressure plate, a fixed plate, a connecting frame, a first friction plate and a second friction plate, wherein the fixed plate with a through hole is arranged on the side wall of the frame, the through hole is used for the upper end of the connecting frame to pass through and fixedly connected with the lower pressure plate, and a first spring is arranged between the lower pressure plate and the fixed plate and sleeved on the outer wall of the connecting frame at the end;
the end parts of the connecting frame, which are close to the front wheel and the rear wheel, are respectively provided with a buffer box, the lower end of each buffer box is connected with a first friction plate, and the lower end of the connecting frame is fixedly connected with a second friction plate.
The further improved scheme in the technical scheme is as follows:
1. in the above scheme, the buffer box further comprises a sliding rod, a baffle and a second spring, wherein the lower end of the sliding rod is fixedly connected with the first friction plate, the upper end of the sliding rod penetrates through the buffer box and stretches into the buffer box to be fixedly connected with the baffle, and the second spring is arranged between the upper surface of the baffle and the inner wall of the buffer box.
2. In the above scheme, the upper surface of handrail board is provided with a locking plate, and this locking plate rotates between being connected with the handrail board.
3. In the scheme, the locking plate is rotationally connected with the handrail plate through the rotating shaft.
4. In the above scheme, the diameter of the rear wheel is larger than that of the front wheel.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. the utility model discloses an electric wheelchair, wherein the opposite sides of two handrail plates positioned on the left side and the right side of a frame are provided with a brake mechanism, the upper end of a connecting frame penetrates through the through hole to be fixedly connected with a lower pressing plate, a first spring is arranged between the lower pressing plate and a fixed plate and sleeved on the outer wall of the connecting frame, the end parts of the connecting frame, which are close to a front wheel and a rear wheel, are respectively provided with a buffer box, the lower end of the buffer box is connected with a first friction plate, the lower end of the connecting frame is fixedly connected with a second friction plate, and the friction between the second friction plate and the ground is used for braking, so that the braking distance is shortened on the basis of realizing the friction braking of the wheelchair, and the condition that the wheelchair is turned over due to the locking of the brake mechanism is effectively avoided.
2. The lower end of the sliding rod of the electric wheelchair is fixedly connected with the first friction plate, the upper end of the sliding rod passes through the buffer box and stretches into the buffer box to be fixedly connected with a baffle plate, and a second spring is arranged between the upper surface of the baffle plate and the inner wall of the buffer box.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the electric wheelchair of the present utility model;
FIG. 2 is an enlarged view of the utility model at A of FIG. 1;
fig. 3 is a schematic view of a partial structure of the electric wheelchair of the present utility model.
In the above figures: 1. a frame; 101. a front wheel; 102. a rear wheel; 2. a drive assembly; 3. a handrail plate; 4. a brake mechanism; 5. a lower pressing plate; 6. a fixing plate; 601. a through hole; 7. a connecting frame; 8. a first friction plate; 9. a second friction plate; 10. a first spring; 11. a buffer box; 12. a slide bar; 13. a baffle; 14. a second spring; 15. a locking plate; 16. a rotating shaft.
Detailed Description
The present patent will be further understood by the specific examples given below, which are not intended to be limiting.
Example 1: an electric wheelchair comprises a frame 1, wherein a driving component 2 for driving the rear wheel 102 to rotate is arranged at the bottom of the frame 1 with a front wheel 101 and a rear wheel 102, a handrail plate 3 is respectively arranged at the left side and the right side of the frame 1, and a brake mechanism 4 is arranged at the opposite sides of the two handrail plates 3;
the brake mechanism 4 further comprises a lower pressure plate 5, a fixed plate 6, a connecting frame 7, a first friction plate 8 and a second friction plate 9, wherein the fixed plate 6 with a through hole 601 is arranged on the side wall of the frame 1, the through hole 601 is used for the upper end of the connecting frame 7 to pass through and fixedly connect with the lower pressure plate 5, and a first spring 10 is arranged between the lower pressure plate 5 and the fixed plate 6 and sleeved on the outer wall of the connecting frame 7 at the end;
the lower pressing plate is pressed downwards, the lower pressing plate drives the connecting frame to slide downwards, the connecting frame drives the second friction plate and the buffer box to move downwards, at the moment, the first spring is lengthened, the moving box drives the first friction plate to move downwards, so that sliding friction is generated between the bottom surface of the first friction plate and the outer surfaces of the front wheel and the rear wheel, and the wheelchair is decelerated;
the end parts of the connecting frame 7, which are close to the front wheel 101 and the rear wheel 102, are respectively provided with a buffer box 11, the lower end of the buffer box 11 is connected with a first friction plate 8, and the lower end of the connecting frame 7 is fixedly connected with a second friction plate 9.
The lower pressing plate is continuously pressed downwards, the connecting frame is driven to move downwards, so that the second friction plate moves downwards, the bottom surface of the second friction plate is in contact with the ground, double braking of the wheelchair is realized, and compared with a braking mode that sliding friction occurs only on the outer surfaces of the front wheel and the rear wheel, the braking distance is shortened.
The buffer box 11 further comprises a sliding rod 12, a baffle 13 and a second spring 14, wherein the lower end of the sliding rod 12 is fixedly connected with the first friction plate 8, the upper end of the sliding rod passes through the buffer box 11 and stretches into the buffer box to be fixedly connected with the baffle 13, and the second spring 14 is arranged between the upper surface of the baffle 13 and the inner wall of the buffer box 11.
The second friction plate 9 is provided with two blocks.
Example 2: an electric wheelchair comprises a frame 1, wherein a driving component 2 for driving the rear wheel 102 to rotate is arranged at the bottom of the frame 1 with a front wheel 101 and a rear wheel 102, a handrail plate 3 is respectively arranged at the left side and the right side of the frame 1, and a brake mechanism 4 is arranged at the opposite sides of the two handrail plates 3;
the brake mechanism 4 further comprises a lower pressure plate 5, a fixed plate 6, a connecting frame 7, a first friction plate 8 and a second friction plate 9, wherein the fixed plate 6 with a through hole 601 is arranged on the side wall of the frame 1, the through hole 601 is used for the upper end of the connecting frame 7 to pass through and fixedly connect with the lower pressure plate 5, and a first spring 10 is arranged between the lower pressure plate 5 and the fixed plate 6 and sleeved on the outer wall of the connecting frame 7 at the end;
the second friction plate is used for friction braking with the ground, the first friction plate is used for friction braking with the front wheel and the rear wheel, and on the basis of realizing friction braking of the wheelchair, compared with a braking mode of sliding friction only on the outer surfaces of the front wheel and the rear wheel, the braking distance is shortened, and the condition that the wheelchair is turned over due to the locking of the braking mechanism is effectively avoided;
the end parts of the connecting frame 7, which are close to the front wheel 101 and the rear wheel 102, are respectively provided with a buffer box 11, the lower end of the buffer box 11 is connected with a first friction plate 8, and the lower end of the connecting frame 7 is fixedly connected with a second friction plate 9.
The buffer box 11 further comprises a slide bar 12, a baffle 13 and a second spring 14, the lower end of the slide bar 12 is fixedly connected with the first friction plate 8, the upper end of the slide bar passes through the buffer box 11 and stretches into the buffer box to be fixedly connected with the baffle 13, and the second spring 14 is arranged between the upper surface of the baffle 13 and the inner wall of the buffer box 11, so that the condition of directly locking the front wheel and the rear wheel is avoided while the continuous extrusion friction between the first friction plate and the front wheel and the rear wheel is kept, and the smoothness of the braking process is improved.
The upper surface of the armrest plate 3 is provided with a locking plate 15, and the locking plate 15 is rotationally connected with the armrest plate 3; the locking plate 15 is rotatably connected with the handrail plate 3 through a rotating shaft 16; the locking plate 15 is rotated to be positioned above the lower pressing plate, so that the second friction plate is kept in contact with the ground, the first friction plate is contacted with the front wheels and the rear wheels, the stopping position of the wheelchair is realized, the stability of the wheelchair when the wheelchair is stopped is improved, and the condition that the wheelchair slides is avoided.
The rear wheel 102 has a larger diameter than the front wheel 101.
The working principle of the utility model is as follows: the lower pressing plate is pressed downwards, the lower pressing plate drives the connecting frame to slide downwards, the connecting frame drives the second friction plate and the buffer box to move downwards, at the moment, the first spring is lengthened, the moving box drives the first friction plate to move downwards, sliding friction is generated between the bottom surface of the first friction plate and the outer surfaces of the front wheel and the rear wheel, the wheelchair is decelerated, the lower pressing plate is continuously pressed downwards, the connecting frame is driven to move downwards, the second friction plate is enabled to move downwards, the bottom surface of the second friction plate is contacted with the ground, and therefore double braking of the wheelchair is achieved, and compared with a braking mode in which sliding friction is generated only by the outer surfaces of the front wheel and the rear wheel, the braking distance is shortened.
By adopting the electric wheelchair, the braking distance is shortened on the basis of realizing the friction braking of the wheelchair by friction braking between the second friction plate and the ground and friction braking between the first friction plate and the front wheel and the rear wheel, and the condition that the wheelchair is overturned due to the locking of the braking mechanism is effectively avoided; furthermore, the first friction plate is kept to continuously squeeze and rub the front wheel and the rear wheel, the condition that the front wheel and the rear wheel are directly locked is avoided, and the smoothness of the braking process is improved.
The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.
Claims (5)
1. An electric wheelchair comprises a frame (1), wherein a driving assembly (2) for driving the rear wheel (102) to rotate is arranged at the bottom of the frame (1) with the front wheel (101) and the rear wheel (102), and is characterized in that: the left side and the right side of the frame (1) are respectively provided with a handrail plate (3), and the opposite sides of the two handrail plates (3) are provided with a brake mechanism (4);
the brake mechanism (4) further comprises a lower pressure plate (5), a fixed plate (6), a connecting frame (7), a first friction plate (8) and a second friction plate (9), wherein the fixed plate (6) with a through hole (601) is arranged on the side wall of the frame (1), the through hole (601) is used for the upper end of the connecting frame (7) to penetrate through and be fixedly connected with the lower pressure plate (5), and a first spring (10) is arranged between the lower pressure plate (5) and the fixed plate (6) and sleeved on the outer wall of the connecting frame (7) at the end;
the end parts of the connecting frame (7) close to the front wheel (101) and the rear wheel (102) are respectively provided with a buffer box (11), the lower end of the buffer box (11) is connected with a first friction plate (8), and the lower end of the connecting frame (7) is fixedly connected with a second friction plate (9).
2. An electric wheelchair as claimed in claim 1, characterised in that: the buffer box (11) further comprises a sliding rod (12), a baffle (13) and a second spring (14), wherein the lower end of the sliding rod (12) is fixedly connected with the first friction plate (8), the upper end of the sliding rod penetrates through the buffer box (11) and stretches into the buffer box to be fixedly connected with the baffle (13), and the second spring (14) is arranged between the upper surface of the baffle (13) and the inner wall of the buffer box (11).
3. An electric wheelchair as claimed in claim 1, characterised in that: the upper surface of the armrest plate (3) is provided with a locking plate (15), and the locking plate (15) is rotationally connected with the armrest plate (3).
4. An electric wheelchair according to claim 3, characterised in that: the locking plate (15) is rotatably connected with the handrail plate (3) through a rotating shaft (16).
5. An electric wheelchair as claimed in claim 1, characterised in that: the rear wheel (102) has a larger diameter than the front wheel (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223045498.2U CN218979512U (en) | 2022-11-16 | 2022-11-16 | Electric wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223045498.2U CN218979512U (en) | 2022-11-16 | 2022-11-16 | Electric wheelchair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218979512U true CN218979512U (en) | 2023-05-09 |
Family
ID=86193683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223045498.2U Active CN218979512U (en) | 2022-11-16 | 2022-11-16 | Electric wheelchair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218979512U (en) |
-
2022
- 2022-11-16 CN CN202223045498.2U patent/CN218979512U/en active Active
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| GR01 | Patent grant | ||
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