CN110327167B - Electric wheelchair - Google Patents
Electric wheelchair Download PDFInfo
- Publication number
- CN110327167B CN110327167B CN201910756807.0A CN201910756807A CN110327167B CN 110327167 B CN110327167 B CN 110327167B CN 201910756807 A CN201910756807 A CN 201910756807A CN 110327167 B CN110327167 B CN 110327167B
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- Prior art keywords
- rod
- base
- connecting rod
- hinged
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000004744 fabric Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000605 extraction Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
- A61G5/041—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven having a specific drive-type
- A61G5/042—Front wheel drive
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1056—Arrangements for adjusting the seat
- A61G5/1059—Arrangements for adjusting the seat adjusting the height of the seat
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
- A61G5/122—Rests specially adapted therefor, e.g. for the head or the feet for the back
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/14—Standing-up or sitting-down aids
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Rehabilitation Tools (AREA)
- Automatic Cycles, And Cycles In General (AREA)
Abstract
The invention discloses an electric wheelchair, which comprises a vehicle body, wherein a seat is fixed above the vehicle body, and comprises a bottom surface and side walls fixed on two sides of the bottom surface; the top of the side wall is fixed with an arc-shaped supporting arm; the middle part of the bottom surface is provided with a raised base, the base is provided with a seat surface, and leg placement areas are respectively formed between the two sides of the base and the seat; the front end of the vehicle body is provided with a telescopic supporting rod, the bottom of the telescopic supporting rod is fixedly connected with the vehicle body, and the top of the telescopic supporting rod is hinged with a control panel which is respectively and electrically connected with the energy power device and the driving device. When the electric wheelchair disclosed by the invention is used, a user can mount the wheelchair without depending on other people, and the electric wheelchair is convenient for the user to use.
Description
Technical Field
The invention relates to a wheelchair, in particular to an electric wheelchair.
Background
At present, when a user uses a traditional electric wheelchair, the user needs to lean against the wheelchair, and can sit on the wheelchair only by being assisted by other people, and the user is difficult to sit on the wheelchair without help of the other people, which is inconvenient for the user.
Disclosure of Invention
According to the technical problems set forth above, an electric wheelchair is provided. The invention adopts the following technical means:
an electric wheelchair comprises a vehicle body, wherein a driving wheel is arranged in front of the bottom of the vehicle body, a driven wheel is arranged behind the bottom of the vehicle body, a driving device for driving the driving wheel to rotate and an energy power device for providing energy for the driving device are arranged in the vehicle body, a seat is fixed above the vehicle body, and the seat comprises a bottom surface and side walls fixed on two sides of the bottom surface; the top of the side wall is fixed with an arc-shaped supporting arm;
the middle part of the bottom surface is provided with a raised base, the base is provided with a seat surface, and leg placement areas are respectively formed between the two sides of the base and the seat;
The front end of the vehicle body is provided with a telescopic supporting rod, the bottom of the telescopic supporting rod is fixedly connected with the vehicle body, and the top of the telescopic supporting rod is hinged with a control panel which is respectively and electrically connected with the energy power device and the driving device. The control panel is used for controlling the operation of the driving device, further controlling the rotation of the driving wheel, and realizing the movement of the vehicle body, and is not described in the prior art.
An armrest is fixed in the middle of the telescopic supporting rod.
The front end of the leg placement area is provided with a detachable leg guard.
When a user uses the wheelchair, the user sits on the seat surface with the face facing the control panel, and the legs are respectively placed in the leg placement areas, so that the user can sit on the seat surface easily by supporting the body by hands and leaning forward when the user wants to sit on the wheelchair on the bed by one person, and the wheelchair is a front straight-face wheelchair of the user and does not need to be a back straight-face wheelchair.
The seat surface is connected with the base through a shear type lifting mechanism arranged at the bottom of the seat surface, and the shear type lifting mechanism comprises a top plate fixedly connected with the lower surface of the seat surface, a bottom plate fixedly connected with the base and two connecting rod groups which are arranged between the top plate and the bottom plate and are arranged in parallel;
The connecting rod group comprises a connecting rod I and a connecting rod II which are arranged in a crossing manner, the middle part of the connecting rod I is hinged to the middle part of the connecting rod II, the top end of the connecting rod II is hinged to a sliding block I, the bottom of the top plate is fixedly provided with a sliding rail I matched with the sliding block I, the sliding block I is in sliding fit with the sliding rail I, the bottom end of the connecting rod II is hinged to the upper surface of the bottom plate, the top end of the connecting rod I is hinged to the side wall of the seat surface, the bottom end of the connecting rod I is hinged to a screw nut of a screw rod fixed on the bottom plate, the shear type lifting mechanism further comprises a screw rod driving device for driving the screw rod to move, the screw rod driving device comprises a driven sprocket fixed on the input end of the screw rod, a driving sprocket and a rocker which penetrates out of the base and is matched with the driving sprocket are fixed in the rear end of the base, and the driving sprocket is connected with the two driven sprockets through a transmission chain. When the height of the seat surface needs to be adjusted, the rocker is used for rocking to enable the driving sprocket to rotate, the driving sprocket drives the driven sprocket to rotate, then the screw rod of the screw rod rotates, the screw rod nut moves linearly, and therefore the seat surface is lifted or lowered through the cooperation of the connecting rod I and the connecting rod II.
The telescopic support rod comprises an inner rod and an outer rod sleeved outside the inner rod, the bottom end of the outer rod is fixedly connected with the front end of the vehicle body, the top end of the inner rod is hinged to the control panel, a through hole group I is radially machined on the inner rod, the through hole group I comprises a plurality of through holes I uniformly arranged along the axial direction of the outer rod, a through hole II matched with the through hole I is radially machined on the outer rod, and the outer rod and the inner rod pass through the through hole I and the through hole II through a safety pin to be fixed. The height of the control panel can be adjusted automatically as required through the telescopic support rod.
The rear end of the base is provided with a drawer, and the energy power device is arranged in the base. The drawer can be used for placing articles for daily use of users.
The back of seat face upper surface is equipped with the recess, be equipped with the pull-out type back in the recess, the pull-out type back through set up respectively the back receive and release device of recess both sides with the recess connection, the back receive and release device is including setting up slide rail II in the recess, be equipped with on slide rail II's the front end with slide rail II complex slider II, slide rail II's rear end is articulated with the one end of back bracing piece, the other end of back bracing piece with the middle part of pull-out type back is articulated, install the cloth handle on the pull-out type back. When a user needs to use the extraction type backrest, the user only needs to pull up the cloth handle, the sliding block II moves backwards, the back plate supporting rod is changed from an original horizontal state to an inclined state, and the extraction type backrest is supported. When the user does not use the extraction type backrest, the user can put the extraction type backrest into the groove.
The invention has the following advantages:
the height of the control panel can be adjusted automatically, the height of the seat surface can be adjusted automatically according to the needs of a user, the pull-out backrest can be pulled out or not pulled out according to the needs of the user, and when the electric wheelchair disclosed by the invention is used, the user can mount the wheelchair without depending on other people, so that the electric wheelchair is convenient for the user to use.
For the reasons, the invention can be widely popularized in the fields of wheelchairs and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
Fig. 1 is a perspective view of an electric wheelchair according to an embodiment of the present invention.
Fig. 2 is a front view of an electric wheelchair in accordance with an embodiment of the present invention.
Fig. 3 is a rear view of an electric wheelchair in accordance with an embodiment of the present invention.
Fig. 4 is a side view of an electric wheelchair in accordance with an embodiment of the present invention.
Fig. 5 is a top view of an electric wheelchair in accordance with an embodiment of the present invention.
Fig. 6 is an internal schematic view of an electric wheelchair according to an embodiment of the present invention.
Fig. 7 is a schematic structural view of a scissor lift mechanism according to an embodiment of the present invention.
Fig. 8 is a schematic view of a screw driving device according to an embodiment of the present invention.
Fig. 9 is a schematic view of a telescopic support rod according to an embodiment of the present invention.
Fig. 10 is a schematic view of the structure of the extraction type backrest according to the embodiment of the present invention.
Fig. 11 is a schematic view of the structure of the pull-out backrest in the groove according to the embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 11, an electric wheelchair comprises a vehicle body 1, wherein a driving wheel 11 is arranged in front of the bottom of the vehicle body 1, a driven wheel 12 is arranged behind the bottom of the vehicle body 1, a driving device 13 for driving the driving wheel 11 to rotate and an energy power device 14 for providing energy for the driving device 13 are arranged in the vehicle body 1, a seat 2 is fixed above the vehicle body 1, and the seat 2 comprises a bottom surface 21 and side walls 22 fixed on two sides of the bottom surface 21; the top of the side wall 22 is fixed with an arc-shaped supporting arm 23;
a raised base 3 is arranged in the middle of the bottom surface 21, a seat surface 31 is arranged on the base 3, and leg placement areas 24 are respectively formed between two sides of the base 3 and the seat 2;
The front end of the vehicle body 1 is provided with a telescopic supporting rod 4, the bottom of the telescopic supporting rod 4 is fixedly connected with the vehicle body 1, and the top of the telescopic supporting rod 4 is hinged with a control panel 5 which is respectively and electrically connected with an energy power device 14 and a driving device 13.
An armrest 41 is fixed in the middle of the telescopic support rod 4.
A detachable leg guard 25 is mounted at the front end of the leg rest 24.
When the user uses, the face of the user faces the control panel 5 and sits on the seat surface 31, and the legs are respectively placed in the leg placement areas 24, when the user wants to sit on the wheelchair on the bed by one of the user, the user can sit on the seat surface 31 easily by supporting the body by one of the user's hands and leaning forward, and when the wheelchair is used, the wheelchair is a front straight wheelchair of the user and does not need to be a back straight wheelchair.
The seat surface 31 is connected with the base 3 through a scissor type lifting mechanism 6 arranged at the bottom of the seat surface 31, and the scissor type lifting mechanism 6 comprises a top plate 61 fixedly connected with the lower surface of the seat surface 31, a bottom plate 62 fixedly connected with the base 3 and two connecting rod groups which are arranged between the top plate 61 and the bottom plate 62 and are arranged in parallel;
The connecting rod group comprises a connecting rod I63 and a connecting rod II 64 which are arranged in a crossed mode, the middle part of the connecting rod I63 is hinged to the middle part of the connecting rod II 64, the top end of the connecting rod II 64 is hinged to a sliding block I65, a sliding rail I66 matched with the sliding block I65 is fixed to the bottom of a top plate, the sliding block I65 is matched with the sliding rail I66 in a sliding mode, the bottom end of the connecting rod II 64 is hinged to the upper surface of the bottom plate 62, the top end of the connecting rod I63 is hinged to the side wall of the seat surface 31, the bottom end of the connecting rod I63 is hinged to a screw nut 68 of a screw 67 fixed to the bottom plate 62, the shear type lifting mechanism 6 further comprises a screw driving device 69 for driving the screw 67, the screw driving device 69 comprises a driven sprocket 691 fixed to the input end of the screw 67, a driving sprocket 692 and a rocker 693 penetrating out of the base 3 and matched with the driving sprocket 691 are fixed to the rear end of the base 3, and the driving sprocket 692 is connected with the two driven sprockets 691 through a transmission chain 694. When the height of the seat surface 31 needs to be adjusted, the rocker 693 is used for rocking to rotate the driving sprocket 692, the driving sprocket 692 drives the driven sprocket 691 to rotate, and then the screw rod of the screw rod 67 rotates, and the screw rod nut 68 moves linearly, so that the seat surface 31 is lifted or lowered through the cooperation of the connecting rod I63 and the connecting rod II 64.
The telescopic support rod 4 comprises an inner rod 42 and an outer rod 43 sleeved outside the inner rod 42, the bottom end of the outer rod 43 is fixedly connected with the front end of the vehicle body 1, the top end of the inner rod 42 is hinged to the control panel 5, a through hole group I is radially machined on the inner rod 42 and comprises a plurality of through holes I421 uniformly distributed along the axial direction of the outer rod, a through hole II 431 matched with the through hole I421 is radially machined on the outer rod 43, and the outer rod 43 and the inner rod 42 penetrate through the through hole I421 and the through hole II 431 through a safety pin 44 to be fixed. The height of the control panel 5 can be adjusted independently as required by the telescopic support rod 4.
The rear end of the base 3 is provided with a drawer 32, and the energy power device 13 is arranged in the base 3. Drawer 32 may house consumer goods.
The back upper surface of seat 31 is equipped with recess 311, be equipped with pull-out type back 7 in the recess 311, pull-out type back 7 through set up respectively the back receive and release device of recess 311 both sides with recess 311 is connected, back receive and release device is including setting up slide rail II 8 in the recess 311, be equipped with on the front end of slide rail II 8 with slide rail II 8 complex slider II 81, slide rail II 8's rear end is articulated with the one end of back bracing piece 82, the other end of back bracing piece 82 with the middle part of pull-out type back 7 is articulated, install cloth handle 71 on the pull-out type back 7. When the user needs to use the pull-out backrest 7, only the cloth handle 71 is pulled up, the sliding block II moves backward, and the back plate supporting rod 82 changes from the original horizontal state to the inclined state, so as to support the pull-out backrest 7. When the user does not use the draw-out backrest 7, it is simply put into the recess 311.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (4)
1. The utility model provides an electronic wheelchair, includes the automobile body, the place ahead of the bottom of automobile body has the drive wheel, the rear of the bottom of automobile body has the driven wheel, be equipped with in the automobile body the drive wheel pivoted drive arrangement, for drive arrangement provides the energy power device of energy, its characterized in that:
A seat is fixed above the vehicle body, and comprises a bottom surface and side walls fixed on two sides of the bottom surface; the top of the side wall is fixed with an arc-shaped supporting arm;
the middle part of the bottom surface is provided with a raised base, the base is provided with a seat surface, and leg placement areas are respectively formed between the two sides of the base and the seat;
The front end of the vehicle body is provided with a telescopic supporting rod, the bottom of the telescopic supporting rod is fixedly connected with the vehicle body, and the top of the telescopic supporting rod is hinged with a control panel which is respectively and electrically connected with the energy power device and the driving device;
the seat surface is connected with the base through a shear type lifting mechanism arranged at the bottom of the seat surface, and the shear type lifting mechanism comprises a top plate fixedly connected with the lower surface of the seat surface, a bottom plate fixedly connected with the base and two connecting rod groups which are arranged between the top plate and the bottom plate and are arranged in parallel;
The connecting rod group comprises a connecting rod I and a connecting rod II which are arranged in a crossing way, the middle part of the connecting rod I is hinged with the middle part of the connecting rod II, the top end of the connecting rod II is hinged with a sliding block I, the bottom of the top plate is fixedly provided with a sliding rail I matched with the sliding block I, the sliding block I is in sliding fit with the sliding rail I, the bottom end of the connecting rod II is hinged with the upper surface of the bottom plate, the top end of the connecting rod I is hinged with the side wall of the seat surface, the bottom end of the connecting rod I is hinged with a screw nut of a screw rod fixed on the bottom plate, the scissor type lifting mechanism further comprises a screw rod driving device for driving the screw rod to move, the screw rod driving device comprises a driven sprocket fixed on the input end of the screw rod, a driving sprocket and a rocker penetrating out of the base and matched with the driving sprocket are fixed in the rear end of the base, and the driving sprocket is connected with the two driven sprockets through a transmission chain;
The telescopic support rod comprises an inner rod and an outer rod sleeved outside the inner rod, the bottom end of the outer rod is fixedly connected with the front end of the vehicle body, the top end of the inner rod is hinged with the control panel, a through hole group I is radially machined on the inner rod and comprises a plurality of through holes I which are uniformly arranged along the axial direction of the outer rod, a through hole II matched with the through hole I is radially machined on the outer rod, and the outer rod and the inner rod pass through the through hole I and the through hole II through a safety pin to be fixed;
The back of seat face upper surface is equipped with the recess, be equipped with the pull-out type back in the recess, the pull-out type back through set up respectively the back receive and release device of recess both sides with the recess connection, the back receive and release device is including setting up slide rail II in the recess, be equipped with on slide rail II's the front end with slide rail II complex slider II, slide rail II's rear end is articulated with the one end of back bracing piece, the other end of back bracing piece with the middle part of pull-out type back is articulated, install the cloth handle on the pull-out type back.
2. An electric wheelchair according to claim 1, characterized in that: an armrest is fixed in the middle of the telescopic supporting rod.
3. An electric wheelchair according to claim 1, characterized in that: the front end of the leg placement area is provided with a detachable leg guard.
4. An electric wheelchair according to claim 1, characterized in that: the rear end of the base is provided with a drawer, and the energy power device is arranged in the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910756807.0A CN110327167B (en) | 2019-08-16 | 2019-08-16 | Electric wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910756807.0A CN110327167B (en) | 2019-08-16 | 2019-08-16 | Electric wheelchair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110327167A CN110327167A (en) | 2019-10-15 |
| CN110327167B true CN110327167B (en) | 2024-04-26 |
Family
ID=68149723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910756807.0A Active CN110327167B (en) | 2019-08-16 | 2019-08-16 | Electric wheelchair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110327167B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5112076A (en) * | 1990-02-23 | 1992-05-12 | Wilson Harold R | Wheelchair with removable seat |
| JP2000084005A (en) * | 1998-09-11 | 2000-03-28 | Nisshin Iryoki Kk | Support structure of control panel of electric wheelchair |
| JP3155755U (en) * | 2009-07-25 | 2009-12-03 | 光男 福島 | Wheelchair seat height adjustment device. |
| KR101648667B1 (en) * | 2015-03-27 | 2016-08-16 | 경남대학교 산학협력단 | electric wheelchair |
| CN107550652A (en) * | 2017-09-13 | 2018-01-09 | 烟台市莱阳中心医院 | A kind of epileptic's special-purpose multifunctional wheelchair |
| CN207590872U (en) * | 2017-05-25 | 2018-07-10 | 长安大学 | A kind of multifunctional intellectual wheelchair |
| CN108420612A (en) * | 2018-03-29 | 2018-08-21 | 合肥工业大学 | A kind of lower limb rehabilitation device being mounted on wheelchair |
| CN207886371U (en) * | 2017-06-06 | 2018-09-21 | 新昌县皇骐电子科技有限公司 | A kind of wheelchair of liftable rotation |
| CN210872561U (en) * | 2019-08-16 | 2020-06-30 | 大连交通大学 | Electric wheelchair |
-
2019
- 2019-08-16 CN CN201910756807.0A patent/CN110327167B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5112076A (en) * | 1990-02-23 | 1992-05-12 | Wilson Harold R | Wheelchair with removable seat |
| JP2000084005A (en) * | 1998-09-11 | 2000-03-28 | Nisshin Iryoki Kk | Support structure of control panel of electric wheelchair |
| JP3155755U (en) * | 2009-07-25 | 2009-12-03 | 光男 福島 | Wheelchair seat height adjustment device. |
| KR101648667B1 (en) * | 2015-03-27 | 2016-08-16 | 경남대학교 산학협력단 | electric wheelchair |
| CN207590872U (en) * | 2017-05-25 | 2018-07-10 | 长安大学 | A kind of multifunctional intellectual wheelchair |
| CN207886371U (en) * | 2017-06-06 | 2018-09-21 | 新昌县皇骐电子科技有限公司 | A kind of wheelchair of liftable rotation |
| CN107550652A (en) * | 2017-09-13 | 2018-01-09 | 烟台市莱阳中心医院 | A kind of epileptic's special-purpose multifunctional wheelchair |
| CN108420612A (en) * | 2018-03-29 | 2018-08-21 | 合肥工业大学 | A kind of lower limb rehabilitation device being mounted on wheelchair |
| CN210872561U (en) * | 2019-08-16 | 2020-06-30 | 大连交通大学 | Electric wheelchair |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110327167A (en) | 2019-10-15 |
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