CN111685945A - Foldable wheelchair - Google Patents
Foldable wheelchair Download PDFInfo
- Publication number
- CN111685945A CN111685945A CN202010487860.8A CN202010487860A CN111685945A CN 111685945 A CN111685945 A CN 111685945A CN 202010487860 A CN202010487860 A CN 202010487860A CN 111685945 A CN111685945 A CN 111685945A
- Authority
- CN
- China
- Prior art keywords
- support
- rotating shaft
- bracket
- rear wheel
- wheelchair
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 210000001217 buttock Anatomy 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Images
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
- A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
- A61G5/0808—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction
- A61G5/0833—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding front to back, e.g. reducing or expanding the overall depth of the wheelchair
-
- 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
- A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
- A61G5/0891—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable having rigid supports, e.g. seat or back supports which retain their shape after folding of the wheelchair
-
- 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
Abstract
The invention provides a foldable wheelchair, which comprises a wheelchair frame and a locking mechanism, wherein the wheelchair frame comprises a front wheel support, a rear wheel support, a seat support, a backrest support and an armrest support, the front end part of the armrest support, the front wheel support and the rear wheel support are rotatably connected through a first rotating shaft, the seat support and the front wheel support are rotatably connected through a second rotating shaft, the backrest support and the seat support are rotatably connected through a third rotating shaft, the rear end part of the armrest support and the backrest support are rotatably connected through a fourth rotating shaft, so that the front wheel support, the seat support, the backrest support and the armrest support form a four-bar mechanism, the third rotating shaft and the rear wheel support are arranged in a sliding manner, the four-bar mechanism can be driven to move when the third rotating shaft slides relative to the rear wheel support, the wheelchair frame can be changed between an unfolding state and a folding state, and the wheelchair frame is locked in the unfolding state through the locking mechanism, realizes the unfolding and folding of the folding wheelchair, and has simple structure and convenient operation.
Description
Technical Field
The invention belongs to the field of medical instruments, and particularly relates to a foldable wheelchair.
Background
In the process of treating and recovering patients, particularly for patients who cannot walk independently, the wheelchair mode is usually adopted to replace walking, so that the patients can be treated and recovered well, and the daily life of the patients is facilitated.
The existing wheelchair is mainly made by erecting a chair of a fixed structure on a rotating shaft of a pair of idler wheels, the diameter of the idler wheels is large, the upper portion of the idler wheels can be conveniently reached by hands of a user, the user rotates the idler wheels through the hands to enable the wheelchair to advance or retreat, the wheelchair cannot be folded, the wheelchair needs to occupy a large space, some foldable wheelchairs are arranged on the market, and the wheelchairs are complex in structure and inconvenient to operate.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a foldable wheelchair which is simple in structure and convenient to operate.
In order to achieve the above object, the present invention adopts a technical solution that a foldable wheelchair comprises a wheelchair frame having an unfolded state and a folded state, the wheelchair frame comprising:
the front wheel bracket is provided with a front wheel assembly at the bottom front part, and the front wheel assembly comprises a rotatable front wheel;
the rear wheel bracket is provided with a rear wheel assembly at the bottom rear part, the rear wheel assembly comprises a rotatable rear wheel, and the upper end part of the rear wheel bracket is rotationally connected with the upper end part of the front wheel bracket through a first rotating shaft;
the front part of the seat bracket is rotatably connected with the front wheel bracket through a second rotating shaft;
the lower end part of the backrest bracket is rotatably connected with the rear end part of the seat bracket through a third rotating shaft;
the front end part of the armrest support is rotatably connected to the first rotating shaft, and the rear end part of the armrest support is rotatably connected with the backrest support through a fourth rotating shaft;
the front wheel bracket, the seat bracket, the backrest bracket and the armrest bracket form a four-bar linkage through the first rotating shaft, the second rotating shaft, the third rotating shaft and the fourth rotating shaft;
the third rotating shaft is slidably provided with the rear wheel bracket, the third rotating shaft can slide along the axial direction of the rear wheel bracket, and the foldable wheelchair further comprises a locking mechanism for locking the wheelchair frame in an unfolded state.
Preferably, the rear wheel support is sleeved with a sliding sleeve, and the third rotating shaft is connected to the side face of the sliding sleeve.
Further preferably, the locking mechanism is used for locking the relative position of the sliding sleeve and the rear wheel bracket.
Further preferably, the locking mechanism includes a locking pin telescopically disposed on the sliding sleeve, and a locking hole disposed on the rear wheel bracket, and when the locking mechanism is in a locking state, the locking pin is inserted into the locking hole, so that the relative position of the sliding sleeve and the rear wheel bracket is locked.
Preferably, a sliding groove extending along the axial direction of the rear wheel support is formed in the outer wall of the rear wheel support, and one end of the third rotating shaft is slidably disposed in the sliding groove.
Preferably, the locking mechanism is used for locking the relative positions of any two adjacent brackets of the front wheel bracket, the seat bracket, the backrest bracket and the armrest bracket; or, the locking mechanism is configured to lock a relative position of any one of the first turning shaft, the second turning shaft, the third turning shaft, and the fourth turning shaft with respect to the other turning shaft.
Preferably, the foldable wheelchair further comprises armrests and a limiting device, the armrests are rotatably arranged on the backrest support, and the limiting device is used for limiting an included angle between the armrests and the backrest support when the wheelchair frame is in the unfolded state.
Further preferably, the armrest is rotatably provided on the fourth rotating shaft.
Further preferably, the wheelchair frame further comprises a pedal connecting frame, the pedal connecting frame is fixed to the front portion of the front wheel support and extends forwards and downwards, and the plane where the pedal connecting frame is located is overlapped with the plane where the front wheel support is located.
Further preferably, the foldable wheelchair further comprises a pedal bracket rotatably provided at a front end portion of the pedal connecting frame.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the invention provides a foldable wheelchair, which comprises a wheelchair frame and a locking mechanism, wherein the wheelchair frame comprises a front wheel support, a rear wheel support, a seat support, a backrest support and an armrest support, the front end part of the armrest support, the front wheel support and the rear wheel support are rotatably connected through a first rotating shaft, the seat support and the front wheel support are rotatably connected through a second rotating shaft, the backrest support and the seat support are rotatably connected through a third rotating shaft, the rear end part of the armrest support and the backrest support are rotatably connected through a fourth rotating shaft, so that the front wheel support, the seat support, the backrest support and the armrest support form a four-bar mechanism through the first rotating shaft, the second rotating shaft, the third rotating shaft and the fourth rotating shaft, the third rotating shaft and the rear wheel support are arranged in a sliding manner, the third rotating shaft can slide along the axial direction of the rear wheel support, and the four-bar mechanism can be driven to move when the third rotating shaft slides relative to the rear wheel support, the wheelchair frame can be changed between the unfolding state and the folding state, and then the wheelchair frame is locked in the unfolding state through the locking mechanism, so that the folding and unfolding of the folding wheelchair are realized, and the wheelchair frame is simple in structure and convenient to operate.
Drawings
Fig. 1 is a perspective view of the present invention.
FIG. 2 is a side view of the present invention with the wheelchair frame in an expanded position.
Figure 3 is a side view of the present invention during the transition from the unfolded position to the folded position of the wheelchair frame.
Figure 4 is a side view of the present invention with the wheelchair frame in a folded position.
Wherein: 10. a wheelchair frame; 11. a first rotating shaft; 12. a second rotating shaft; 13. a third rotating shaft; 14. a fourth rotating shaft; 100. a front wheel bracket; 101. a front wheel assembly; 1011. a front wheel; 200. a rear wheel support; 201. a rear wheel assembly; 2011. a rear wheel; 300. a seat support; 400. a backrest support; 500. a handrail support; 600. a pedal connecting frame; 20. a sliding sleeve; 40. a handrail; 50. a pedal bracket.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
The fore-and-aft direction, the left-and-right direction, and the up-and-down direction described in the present invention are based on the fore-and-aft direction, the left-and-right direction, and the up-and-down direction that are observed by an occupant when riding the foldable wheelchair provided by the present invention.
The invention will be further described with reference to examples of embodiments shown in the drawings to which the invention is attached.
As shown in fig. 1 to 4, the present invention provides a foldable wheelchair including a wheelchair frame 10 having an unfolded state and a folded state, the wheelchair frame 10 including: the chair comprises a front wheel bracket 100, a rear wheel bracket 200, a seat bracket 300, a backrest bracket 400, an armrest bracket 500 and a pedal connecting frame 600, wherein the front wheel bracket 100 extends upwards from front to back, a front wheel assembly 101 is arranged at the front bottom of the front wheel bracket 100, and the front wheel assembly 101 comprises a rotatable front wheel 1011; the rear wheel bracket 200 extends upwards from back to front, the rear part of the bottom of the rear wheel bracket 200 is provided with a rear wheel component 201, the rear wheel component 201 comprises a rotatable rear wheel 2011, and the upper end part of the rear wheel bracket 200 and the upper end part of the front wheel bracket 100 are rotatably connected through a first rotating shaft 11; the seat support 300 is used for bearing the buttocks and the thighs of the rider, a seat plate is arranged on the seat support 300 or a seat sleeve is sleeved on the seat support, the front part of the seat support 300 is rotatably connected with the middle upper part of the front wheel support 100 through a second rotating shaft 12, and the middle upper part is a position slightly higher than the middle part of the front wheel support 100; the backrest support 400 is used for supporting the back of the occupant, the lower end of the backrest support 400 is rotatably connected with the rear end of the seat support 300 through a third rotating shaft 13, and a backrest plate is mounted on the backrest support 400 or a backrest sleeve is sleeved on the backrest support 400; the front end of the armrest support 500 is rotatably connected to the first rotating shaft 11, and the rear end of the armrest support 500 is rotatably connected to the middle of the backrest support 400 via a fourth rotating shaft 14; the pedal connecting frame 600 is fixed at the front part of the front wheel bracket 100 and extends forwards and downwards, and the plane of the pedal connecting frame 600 is superposed with the plane of the front wheel bracket 100; the front wheel bracket 100, the seat bracket 300, the backrest bracket 400 and the armrest bracket 500 constitute a four-bar linkage through a first rotation shaft 11, a second rotation shaft 12, a third rotation shaft 13 and a fourth rotation shaft 14.
The foldable wheelchair further comprises a sliding sleeve 20, a locking mechanism, an armrest 40, a limiting device and a pedal bracket 50, wherein the sliding sleeve 20 is slidably sleeved on the rear wheel bracket 200, the third rotating shaft 13 is connected to the side surface of the sliding sleeve 20, and when the sliding sleeve 20 slides relative to the rear wheel bracket 200, the four-bar linkage mechanism can be driven to move, so that the wheelchair frame 10 can be changed between an unfolded state and a folded state; a locking mechanism (not shown in the drawings) for locking the wheelchair frame 10 in the unfolded state, specifically, the locking mechanism locks the wheelchair frame 10 in the unfolded state by locking the relative position of the sliding sleeve 20 and the rear wheel bracket 200, the locking mechanism includes a locking pin telescopically disposed on the sliding sleeve 20, the telescopic direction of the locking pin is perpendicular to the sliding direction of the sliding sleeve 20, and a locking hole disposed on the outer wall of the rear wheel bracket 200, the locking pin is inserted into the locking hole when the locking mechanism is in the locked state, so that the relative position of the sliding sleeve 20 and the rear wheel bracket 200 is kept locked, and the locking pin is disengaged from the locking hole when the locking mechanism is in the unlocked state, so that the sliding sleeve 20 can slide relative to the rear wheel bracket 200; the armrest 40 is rotatably disposed on the backrest support 400, specifically, the rear end of the armrest 40 is rotatably disposed on the fourth rotating shaft 14, the armrest 40 is used for supporting the elbow of the occupant, of course, it is also feasible that the armrest support 500 supports the elbow of the occupant without the armrest 40, and only in this way, the angle between the armrest support 500 and the backrest support 400 is difficult to adjust, it is difficult to make the elbow of the occupant in the most comfortable state, and the rotating component at the first rotating shaft 11 is easy to cause a pinching injury to the elbow of the occupant, which has a certain safety hazard; the limiting device is used for limiting an included angle between the armrest 40 and the backrest support 400 when the wheelchair frame 10 is in the unfolded state, and the limiting device is the prior art, is not the invention point of the invention, and is not described herein again; the footrest bracket 50 is used to mount a footrest supporting the feet of the rider, and the footrest bracket 50 is rotatably provided at the front end of the footrest connecting frame 600.
The process of folding the collapsible wheelchair provided by the present invention is explained below so that the advantages and features of the present invention will be more readily understood by those skilled in the art.
When the foldable wheelchair needs to be folded, the locking mechanism is unlocked, the locking pin is separated from the locking hole, the backrest support 400 is pressed downwards, the sliding sleeve 20 is driven to slide downwards relative to the rear wheel support 200, the four-bar linkage mechanism is driven to move through the third rotating shaft 13, the seat support 300 rotates backwards around the third rotating shaft 13, the backrest support 400 rotates forwards around the third rotating shaft 13, the armrest support 500 rotates backwards around the first rotating shaft 11, the front wheel support 100 rotates backwards around the second rotating shaft 12, the seat support 300, the backrest support 400, the armrest support 500, the pedal connecting support 600 and the front wheel support 100 are closed and folded towards the rear wheel support 200, the armrest 40 is rotated to be closed with the rear wheel support 200, the pedal support 50 is rotated to be closed with the front wheel support 100, and the foldable wheelchair can be folded.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A collapsible wheelchair comprising a wheelchair frame having an expanded state and a collapsed state, the wheelchair frame comprising:
the front wheel bracket is provided with a front wheel assembly at the bottom front part, and the front wheel assembly comprises a rotatable front wheel;
the rear wheel bracket is provided with a rear wheel assembly at the bottom rear part, the rear wheel assembly comprises a rotatable rear wheel, and the upper end part of the rear wheel bracket is rotationally connected with the upper end part of the front wheel bracket through a first rotating shaft;
the front part of the seat bracket is rotatably connected with the front wheel bracket through a second rotating shaft;
the lower end part of the backrest bracket is rotatably connected with the rear end part of the seat bracket through a third rotating shaft;
the front end part of the armrest support is rotatably connected to the first rotating shaft, and the rear end part of the armrest support is rotatably connected with the backrest support through a fourth rotating shaft;
the front wheel bracket, the seat bracket, the backrest bracket and the armrest bracket form a four-bar linkage through the first rotating shaft, the second rotating shaft, the third rotating shaft and the fourth rotating shaft;
the method is characterized in that:
the third rotating shaft is slidably provided with the rear wheel bracket, the third rotating shaft can slide along the axial direction of the rear wheel bracket, and the foldable wheelchair further comprises a locking mechanism for locking the wheelchair frame in an unfolded state.
2. The foldable wheelchair as recited in claim 1, wherein: the rear wheel support is sleeved with a sliding sleeve, and the third rotating shaft is connected to the side face of the sliding sleeve.
3. The foldable wheelchair as recited in claim 2, wherein: the locking mechanism is used for locking the relative position of the sliding sleeve and the rear wheel bracket.
4. The foldable wheelchair as recited in claim 3, wherein: the locking mechanism comprises a locking pin which is telescopically arranged on the sliding sleeve and a locking hole which is arranged on the rear wheel bracket, and when the locking mechanism is in a locking state, the locking pin is inserted into the locking hole to lock the relative position of the sliding sleeve and the rear wheel bracket.
5. The foldable wheelchair as recited in claim 1, wherein: the outer wall of the rear wheel support is provided with a sliding groove extending along the axial direction of the rear wheel support, and one end part of the third rotating shaft is slidably arranged in the sliding groove.
6. The foldable wheelchair as recited in claim 1, wherein: the locking mechanism is used for locking the relative positions of any two adjacent brackets of the front wheel bracket, the seat bracket, the backrest bracket and the armrest bracket; or, the locking mechanism is configured to lock a relative position of any one of the first turning shaft, the second turning shaft, the third turning shaft, and the fourth turning shaft with respect to the other turning shaft.
7. The foldable wheelchair as recited in claim 1, wherein: the foldable wheelchair further comprises armrests and a limiting device, the armrests are rotatably arranged on the backrest support, and the limiting device is used for limiting an included angle between the armrests and the backrest support when the wheelchair frame is in an unfolded state.
8. The foldable wheelchair as recited in claim 7, wherein: the armrest is rotatably disposed on the fourth rotating shaft.
9. The foldable wheelchair as recited in any one of claims 1-8, wherein: the wheelchair frame further comprises a pedal connecting frame, the pedal connecting frame is fixed to the front portion of the front wheel support and extends towards the front lower portion, and the plane where the pedal connecting frame is located is overlapped with the plane where the front wheel support is located.
10. The foldable wheelchair as recited in claim 9, wherein: the foldable wheelchair further comprises a pedal support, and the pedal support is rotatably arranged at the front end of the pedal connecting frame.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010487860.8A CN111685945A (en) | 2020-06-02 | 2020-06-02 | Foldable wheelchair |
| PCT/CN2021/097673 WO2021244527A1 (en) | 2020-06-02 | 2021-06-01 | Foldable wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010487860.8A CN111685945A (en) | 2020-06-02 | 2020-06-02 | Foldable wheelchair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111685945A true CN111685945A (en) | 2020-09-22 |
Family
ID=72479210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010487860.8A Pending CN111685945A (en) | 2020-06-02 | 2020-06-02 | Foldable wheelchair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111685945A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113303982A (en) * | 2021-05-20 | 2021-08-27 | 南京康尼智能技术有限公司 | Manual standing wheelchair |
| CN113730121A (en) * | 2021-09-24 | 2021-12-03 | 浙江爱司米电气有限公司 | Foldable wheelchair |
| WO2021244527A1 (en) * | 2020-06-02 | 2021-12-09 | 浙江爱司米电气有限公司 | Foldable wheelchair |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201404380Y (en) * | 2009-05-06 | 2010-02-17 | 徐光明 | Portable foldable wheelchair |
| CN110179603A (en) * | 2019-05-10 | 2019-08-30 | 南京康尼智能技术有限公司 | A kind of folding wheel chair |
| CN212326772U (en) * | 2020-06-02 | 2021-01-12 | 浙江爱司米电气有限公司 | Foldable wheelchair |
-
2020
- 2020-06-02 CN CN202010487860.8A patent/CN111685945A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201404380Y (en) * | 2009-05-06 | 2010-02-17 | 徐光明 | Portable foldable wheelchair |
| CN110179603A (en) * | 2019-05-10 | 2019-08-30 | 南京康尼智能技术有限公司 | A kind of folding wheel chair |
| CN212326772U (en) * | 2020-06-02 | 2021-01-12 | 浙江爱司米电气有限公司 | Foldable wheelchair |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021244527A1 (en) * | 2020-06-02 | 2021-12-09 | 浙江爱司米电气有限公司 | Foldable wheelchair |
| CN113303982A (en) * | 2021-05-20 | 2021-08-27 | 南京康尼智能技术有限公司 | Manual standing wheelchair |
| CN113730121A (en) * | 2021-09-24 | 2021-12-03 | 浙江爱司米电气有限公司 | Foldable wheelchair |
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