CN212281929U - Foldable wheelchair - Google Patents
Foldable wheelchair Download PDFInfo
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- CN212281929U CN212281929U CN202020985216.9U CN202020985216U CN212281929U CN 212281929 U CN212281929 U CN 212281929U CN 202020985216 U CN202020985216 U CN 202020985216U CN 212281929 U CN212281929 U CN 212281929U
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- bracket
- rotating shaft
- wheelchair
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Abstract
The utility model provides a foldable wheelchair, which comprises a wheelchair frame, a connecting piece and a locking mechanism, wherein the wheelchair frame comprises a front wheel bracket, a rear wheel bracket, a seat bracket, a backrest bracket and a handrail bracket, the front end part of the handrail bracket, the front wheel bracket and the rear wheel bracket are connected through the rotation of a first rotating shaft, the seat bracket and the front wheel bracket are connected through the rotation of a second rotating shaft, the backrest bracket and the seat bracket are connected through the rotation of a third rotating shaft, the rear end part of the handrail bracket and the backrest bracket are connected through the rotation of a fourth rotating shaft, so that the front wheel bracket, the seat bracket, the backrest bracket and the handrail bracket form a four-bar mechanism, the two end parts of the connecting piece are respectively connected on the four-bar mechanism and the rear wheel bracket in a rotating way, the four-bar mechanism can be driven to move through the rotation of the connecting piece, the wheelchair frame is changed between an unfolding state and a folding state, the foldable wheelchair is unfolded and folded, and is simple in structure and convenient to operate.
Description
Technical Field
The utility model belongs to the field of medical equipment, concretely relates to collapsible 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.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a foldable wheelchair with simple structure and convenient operation.
In order to achieve the above object, the utility model adopts the technical scheme that a foldable wheelchair comprises a wheelchair frame with an unfolding state and a folding state, the wheelchair frame comprises:
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 foldable wheelchair further comprises a connecting piece and a locking mechanism, one end of the connecting piece is rotatably connected to the four-bar linkage, the other end of the connecting piece is rotatably connected to the rear wheel support, and the locking mechanism is used for locking the wheelchair frame in an unfolded state.
Preferably, one end of the connecting member is rotatably connected to the third rotating shaft.
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 used for locking the relative position of any one of the first rotating shaft, the second rotating shaft, the third rotating shaft and the fourth rotating shaft with other rotating shafts.
Preferably, the locking mechanism is used to lock the relative position of the link and the rear wheel carrier.
Further preferably, the locking mechanism includes a locking block telescopically disposed on the connecting member, and a locking hole disposed on the rear wheel bracket, and when the locking mechanism is in a locked state, the locking block is inserted into the locking hole to lock a relative position of the connecting member and the rear wheel bracket.
Further preferably, the telescopic direction of the locking block is perpendicular to the rotation plane of the connecting piece.
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 disposed 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.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
the utility model provides a foldable wheelchair, which comprises a wheelchair frame, a connecting piece and a locking mechanism, wherein the wheelchair frame comprises a front wheel bracket, a rear wheel bracket, a seat bracket, a backrest bracket and a handrail bracket, the front end part of the handrail bracket, the front wheel bracket and the rear wheel bracket are connected through a first rotating shaft in a rotating way, the seat bracket and the front wheel bracket are connected through a second rotating shaft in a rotating way, the backrest bracket and the seat bracket are connected through a third rotating shaft in a rotating way, the rear end part of the handrail bracket and the backrest bracket are connected through a fourth rotating shaft in a rotating way, so that the front wheel bracket, the seat bracket, the backrest bracket and the handrail bracket form a four-bar mechanism through the first rotating shaft, the second rotating shaft, the third rotating shaft and the fourth rotating shaft, the two end parts of the connecting piece are respectively connected on the four-bar mechanism and the rear wheel bracket in a rotating way, the four-bar mechanism can be driven to move through, and the wheelchair frame is locked in the unfolded state through the locking mechanism, so that the unfolding and folding of the foldable wheelchair are realized, the structure is simple, and the operation is convenient.
Drawings
Fig. 1 is a schematic perspective view of the utility model in a front side view direction.
Fig. 2 is a schematic perspective view of the utility model in a rear side view direction.
Fig. 3 is a schematic side view of the present invention, wherein the wheelchair frame is in an unfolded state.
Fig. 4 is a schematic side view of the present invention, wherein the wheelchair frame is in the process of being unfolded to be folded.
Fig. 5 is a side view of the present invention, wherein the wheelchair frame is folded.
Fig. 6 is a partially enlarged view of a portion a in fig. 2.
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 connecting member; 30. a locking mechanism; 31. a locking block; 32. a locking hole; 40. a handrail; 50. a pedal bracket.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more easily understand the advantages and features of the present invention, and to make clear and definite definitions of the protection scope of the present invention.
The utility model describes the fore-and-aft direction, the left-and-right direction and the up-and-down direction are based on the fore-and-aft direction, the left-and-right direction and the up-and-down direction observed when a rider takes the foldable wheelchair.
The invention will be further described with reference to examples of embodiments shown in the drawings.
As shown in fig. 1 to 6, 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 is rotatably connected with the upper end part of the front wheel bracket 100 through a first rotating shaft 11; the seat support 300 is used for bearing the buttocks 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 through 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 rotating shaft 11, a second rotating shaft 12, a third rotating shaft 13 and a fourth rotating shaft 14.
The foldable wheelchair further comprises a connecting piece 20, a locking mechanism 30, an armrest 40, a limiting device and a pedal bracket 50, wherein one end of the connecting piece 20 is rotatably connected to the third rotating shaft 13 of the four-bar linkage, and the other end of the connecting piece 20 is rotatably connected to the rear wheel bracket 200; the locking mechanism 30 is used for locking the wheelchair frame 10 in the unfolded state, specifically, the locking mechanism 30 locks the wheelchair frame 10 in the unfolded state by locking the relative position of the connecting member 20 and the rear wheel bracket 200, the locking mechanism 30 comprises a locking block 31 and a locking hole 32, the locking block 31 is telescopically arranged on the connecting member 20, the telescopic direction of the locking block 31 is perpendicular to the rotating plane of the connecting member 20, the locking hole 32 is arranged on the rear wheel bracket 200, when the locking mechanism 30 is in the locked state, the locking block 31 is inserted into the locking hole 32 to keep the relative position of the connecting member 20 and the rear wheel bracket 200 locked, when the locking mechanism 30 is in the unlocked state, the locking block 31 is disengaged from the locking hole 32, and the connecting member 20 can rotate 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, which is not a point of the utility model 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 folding process of the collapsible wheelchair provided by the present invention is described below so that the advantages and features of the present invention are more readily understood by those skilled in the art.
When the foldable wheelchair needs to be folded, the locking mechanism 30 is unlocked, the locking block 31 is separated from the locking hole 32, the backrest support 400 is pressed downwards, the connecting piece 20 is driven to rotate backwards 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 connecting piece 20, 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 only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot 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 by 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 foldable wheelchair further comprises a connecting piece and a locking mechanism, one end of the connecting piece is rotatably connected to the four-bar linkage, the other end of the connecting piece is rotatably connected to the rear wheel support, and the locking mechanism is used for locking the wheelchair frame in an unfolded state.
2. The foldable wheelchair as recited in claim 1, wherein: one end part of the connecting piece is rotatably connected to the third rotating shaft.
3. 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 used for locking the relative position of any one of the first rotating shaft, the second rotating shaft, the third rotating shaft and the fourth rotating shaft with other rotating shafts.
4. The foldable wheelchair as recited in claim 1, wherein: the locking mechanism is used for locking the relative position of the connecting piece and the rear wheel bracket.
5. The foldable wheelchair as recited in claim 4, wherein: the locking mechanism comprises a locking block and a locking hole, wherein the locking block is telescopically arranged on the connecting piece, the locking hole is arranged on the rear wheel bracket, and when the locking mechanism is in a locking state, the locking block is inserted into the locking hole to lock the relative position of the connecting piece and the rear wheel bracket.
6. The foldable wheelchair as recited in claim 5, wherein: the telescopic direction of the locking block is perpendicular to the rotating plane of the connecting piece.
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 arranged 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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020985216.9U CN212281929U (en) | 2020-06-02 | 2020-06-02 | Foldable wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020985216.9U CN212281929U (en) | 2020-06-02 | 2020-06-02 | Foldable wheelchair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212281929U true CN212281929U (en) | 2021-01-05 |
Family
ID=73939691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020985216.9U Active CN212281929U (en) | 2020-06-02 | 2020-06-02 | Foldable wheelchair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212281929U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111671584A (en) * | 2020-06-02 | 2020-09-18 | 浙江爱司米电气有限公司 | Foldable wheelchair |
-
2020
- 2020-06-02 CN CN202020985216.9U patent/CN212281929U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111671584A (en) * | 2020-06-02 | 2020-09-18 | 浙江爱司米电气有限公司 | Foldable wheelchair |
| CN111671584B (en) * | 2020-06-02 | 2024-06-14 | 浙江爱司米电气有限公司 | Foldable wheelchair |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |