CN111374842B - Foldable wheelchair - Google Patents
Foldable wheelchair Download PDFInfo
- Publication number
- CN111374842B CN111374842B CN202010289605.2A CN202010289605A CN111374842B CN 111374842 B CN111374842 B CN 111374842B CN 202010289605 A CN202010289605 A CN 202010289605A CN 111374842 B CN111374842 B CN 111374842B
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- Prior art keywords
- locking
- cavity
- rear wheel
- hole
- bracket
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- 230000007246 mechanism Effects 0.000 claims abstract description 60
- 238000000034 method Methods 0.000 claims description 2
- 230000004323 axial length Effects 0.000 description 1
- 210000001217 buttock Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- 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
- A61G5/085—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding up and down, e.g. reducing or expanding the overall height of the wheelchair
- A61G5/0858—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding up and down, e.g. reducing or expanding the overall height of the wheelchair comprising a scissor-type frame, e.g. having pivoting cross bars for enabling folding
-
- 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
- A61G5/0841—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 comprising a scissor-type frame, e.g. having pivoting cross bars for enabling folding
-
- 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
- A61G5/0866—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable folding down backrest, e.g. where the backrest folds down onto the seat support
-
- 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
- A61G5/0883—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable having locking means for maintaining a folded or unfolded condition
-
- 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
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)
- Handcart (AREA)
Abstract
According to the foldable wheelchair provided by the invention, the locking mechanism comprising the locking block, the locking cavity and the unlocking device is arranged, the locking cavity extends in the left-right direction, the locking cavity comprises the first locking cavity arranged at the lower end part of the backrest bracket and the second locking cavity arranged at the upper end part of the rear wheel bracket, and the locking block can be arranged in the locking cavity in a left-right movable manner, so that the locking mechanism is locked when the locking block is simultaneously positioned in the first locking cavity and the second locking cavity, the locking mechanism is unlocked when the locking block is only positioned in the first locking cavity or the second locking cavity, the locking mechanism is simple and compact in structure, the locking block is driven to move left and right in the locking cavity through the unlocking device, the foldable wheelchair is convenient to use, and the locking mechanism is high in safety and long in service life and attractive in appearance and high in high-grade sense because the locking block and the locking cavity are matched in the rod piece of the foldable wheelchair.
Description
Technical Field
The invention relates to the field of medical appliances, in particular to a foldable wheelchair.
Background
In the treatment and rehabilitation process of patients, particularly for patients incapable of independently walking, a wheelchair-sitting mode is generally adopted to replace walking, so that the patients can be better treated and rehabilitated, and the daily life of the patients is facilitated.
The existing wheelchairs are manufactured by erecting chairs with fixed structures on rotating shafts of a pair of rollers, the diameters of the rollers are large, the upper parts of the rollers can be conveniently reached by hands of users, the users can rotate the rollers through the hands to enable the wheelchairs to advance or retreat, the wheelchairs cannot be folded, large space is required to be occupied, some foldable wheelchairs exist on the market, but the wheelchairs often have a plurality of locking mechanisms for locking different parts, when the wheelchairs are unlocked, the wheelchairs can be folded after the wheelchairs are unlocked at a plurality of positions, the use is very inconvenient, and the matching structures of the locking mechanisms are mostly exposed outside, so that potential safety hazards exist, the locking mechanisms are easy to damage, the service life is short, the appearance of the wheelchairs is seriously affected, and the high-grade sense of the wheelchairs is poor.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a foldable wheelchair, the locking mechanism of which is simple and compact, the use is convenient, the matching structure of the locking mechanism is positioned inside a rod piece, the safety is high, the locking mechanism is not easy to damage, the service life is long, the appearance is attractive, and the high-grade sense is strong.
In order to achieve the above object, the present invention provides a foldable wheelchair, comprising:
A backrest bracket;
the upper end part of the rear wheel bracket is rotationally connected with the lower end part of the backrest bracket, and the bottom of the rear wheel bracket is provided with a rear wheel;
a seat mechanism rotatably provided on the back support, the seat mechanism having an extension rod extending forward and downward;
The front end part of the front wheel bracket is rotationally connected with the front end part of the extension rod, and the rear end part of the front wheel bracket is rotationally connected with the rear wheel bracket;
a locking mechanism for locking the relative positions of the rear wheel bracket and the backrest bracket;
The locking mechanism comprises a locking block and a locking cavity for accommodating the locking block, the locking cavity extends along the left-right direction, the locking cavity comprises a first locking cavity arranged at the lower end part of the backrest bracket and a second locking cavity arranged at the upper end part of the rear wheel bracket, the locking block can be arranged in the locking cavity in a left-right moving way, when the locking block is simultaneously positioned in the first locking cavity and the second locking cavity, the locking mechanism is locked, when the locking block is only positioned in the first locking cavity or the second locking cavity, the locking mechanism is unlocked, and the locking mechanism further comprises an unlocking device for driving the locking block to move left and right in the locking cavity.
The lower tip of back support has seted up the blind hole, be provided with first locking groove on the inner wall of blind hole, first locking chamber includes cavity in the first locking groove, the upper end of rear wheel support is provided with the through-hole, be provided with the second locking groove on the inner wall of through-hole, the second locking chamber includes cavity in the second locking groove.
Further preferably, a locking tooth is provided on an outer wall of the locking block, the locking mechanism is locked when the locking tooth is simultaneously inserted into the first locking groove and the second locking groove, and the locking mechanism is unlocked when the locking tooth is only inserted into the first locking groove or the second locking groove.
Further preferably, an annular flange is provided in the through hole, one side surface of the annular flange is attached to an end portion of the second locking groove away from the first locking groove, and the annular flange is used for preventing the locking block from being separated from the second locking groove when moving in the second locking groove.
Further preferably, the axis of the blind hole coincides with the axis of the through hole, and the rotation axis of the rear wheel bracket relative to the backrest bracket is formed by the hole opening of the blind hole extending into the through hole or by the hole opening of the through hole extending into the blind hole.
Further preferably, the locking mechanism further comprises a spring, one end of the spring abuts against the bottom wall of the blind hole, the other end of the spring abuts against the side wall of the locking block, which is close to the blind hole, and the spring has a tendency to drive the locking block to move in a direction away from the blind hole.
Further preferably, the unlocking device comprises a rotatable unlocking handle, the end of the unlocking handle is provided with a bevel which is contacted with one end face of the locking block, and when the unlocking handle rotates, the contact point of the bevel and the locking block moves leftwards and/or rightwards to push the locking block to move leftwards and/or rightwards in the locking cavity.
Further preferably, the unlocking handle is rotatably disposed on the rear wheel bracket, and an end portion of the unlocking handle extends into the through hole to form a rotation axis of the unlocking handle relative to the rear wheel bracket, and a rotation axis of the unlocking handle coincides with an axis of the through hole.
Further preferably, the foldable wheelchair further comprises a back rest rotatably arranged on the back rest support, a foot rest rotatably arranged on the foot rest mounting tube, the end of the foot rest mounting tube is fixedly arranged on the front wheel support, and a grab bar rotatably arranged on the back rest support, wherein the grab bar is positioned above the seat mechanism.
Still preferably, the foldable wheelchair further comprises a hub motor, a battery box and a controller, wherein the hub motor is arranged on the rear wheel, the hub motor is used for driving the rear wheel to rotate, the rotation axis of the output shaft of the hub motor coincides with that of the rear wheel, the battery box is detachably arranged on the rear wheel support, the controller is used for controlling the rotation speed and the rotation direction of the hub motor, and the controller is arranged at the end part of the grab rail.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
According to the foldable wheelchair provided by the invention, the locking mechanism comprising the locking block, the locking cavity and the unlocking device is arranged, the locking cavity extends in the left-right direction, the locking cavity comprises the first locking cavity arranged at the lower end part of the backrest bracket and the second locking cavity arranged at the upper end part of the rear wheel bracket, and the locking block can be arranged in the locking cavity in a left-right movable manner, so that the locking mechanism is locked when the locking block is simultaneously positioned in the first locking cavity and the second locking cavity, the locking mechanism is unlocked when the locking block is only positioned in the first locking cavity or the second locking cavity, the locking mechanism is simple and compact in structure, the locking block is driven to move left and right in the locking cavity through the unlocking device, the foldable wheelchair is convenient to use, and the locking mechanism is high in safety and long in service life and attractive in appearance and high in high-grade sense because the locking block and the locking cavity are matched in the rod piece of the foldable wheelchair.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic cross-sectional view of the locking mechanism of the present invention.
FIG. 3 is a schematic view of the assembly of the locking mechanism of the present invention.
Wherein: 10. a foldable wheelchair; 11. a front wheel; 12. a rear wheel; 100. a backrest bracket; 101. a blind hole; 1011. a first locking groove; 200. a rear wheel bracket; 201. a through hole; 2011. a second locking groove; 2012. an annular flange; 300. a seat mechanism; 301. an extension rod; 302. a seating surface; 400. a front wheel bracket; 500. a locking mechanism; 501. a locking block; 5011. locking teeth; 502. a locking cavity; 5021. a first locking cavity; 5022. a second locking cavity; 503. unlocking the carrying handle; 5031. an end portion; 5032. an inclined plane; 504. a spring; 505. a top block; 601. a backboard; 602. a foot pedal; 6021. a foot pedal mounting tube; 603. a grab rail; 701. a hub motor; 702. a battery box; 703. a controller; 800. and (5) a through bolt.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the attached drawings so that the advantages and features of the present invention will be more readily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
The front-rear direction, the left-right direction, and the up-down direction described in the present invention are based on the front-rear direction, the left-right direction, and the up-down direction observed when a user sits in the wheelchair provided in the present invention.
As shown in fig. 1-3, the present invention provides a collapsible wheelchair 10 comprising: the foldable wheelchair 10 is configured by a back support 100, a rear wheel support 200, a seat mechanism 300, a front wheel support 400, a locking mechanism 500, a front wheel 11, and a rear wheel 12, wherein an upper end portion of the rear wheel support 200 is rotatably connected to a lower end portion of the back support 100, the rear wheel 12 is rotatably provided at a bottom portion of the rear wheel support 200, the seat mechanism 300 is rotatably provided on the back support 100, the seat mechanism 300 has a seat surface 302 for supporting buttocks of an occupant and an extension rod 301 extending forward and downward, the front wheel 11 is rotatably provided at a bottom portion of the front wheel support 400, a front end portion of the front wheel support 400 is rotatably connected to a front end portion of the extension rod 301, a rear end portion of the front wheel support 400 is rotatably connected to the rear wheel support 200, and when the rear wheel support 200 is rotated in a direction approaching the front wheel support 400 relative to the back support 100, the seat mechanism 300 and the back support 100 can be driven to approach the front wheel support 400, so that the foldable wheelchair 10 is converted into a folded state.
The locking mechanism 500 is used for locking the relative positions of the rear wheel bracket 200 and the backrest bracket 100, the locking mechanism 500 comprises a locking block 501 and a locking cavity 502 for accommodating the locking block 501, the locking cavity 502 extends along the left-right direction, the locking cavity 502 comprises a first locking cavity 5021 arranged at the lower end part of the backrest bracket 100 and a second locking cavity 5022 arranged at the upper end part of the rear wheel bracket 200, the locking block 501 is arranged in the locking cavity 502 in a left-right movable way, when the locking block 501 is simultaneously positioned in the first locking cavity 5021 and the second locking cavity 5022, the locking mechanism 500 is locked, when the locking block 501 is only positioned in the first locking cavity 5021 or the second locking cavity 5022, the locking mechanism 500 is unlocked, in particular, the lower end part of the backrest bracket 100 is provided with a blind hole 101, the inner wall of the blind hole 101 is provided with first locking grooves 1011, the first locking grooves 1011 are uniformly distributed on the inner wall of the blind hole 101, the cavity in the first locking groove 1011 and the cavity in the blind hole 101 jointly form a first locking cavity 5021, the upper end part of the rear wheel bracket 200 is provided with a through hole 201, the inner wall of the through hole 201 is provided with four second locking grooves 2011, the second locking grooves 2011 are uniformly distributed on the inner wall of the through hole 201, the cavity in the second locking groove 2011 and the cavity in the through hole 201 jointly form a second locking cavity 5022, the rear wheel bracket 200 is positioned on one side of the backrest bracket 100, the through hole 201 and the blind hole 101 are aligned, the locking cavity 502 is positioned in the backrest bracket 100 and the rear wheel bracket 200, the locking block 501 is cylindrical, four locking teeth 5011 are uniformly distributed on the outer circumferential surface of the locking block 501, the locking teeth 5011 are matched with the first locking groove 1011 and the second locking groove 2011, when the locking teeth 5011 are simultaneously inserted into the first locking groove 1011 and the second locking groove 2011, when the locking teeth 5011 are only inserted into the first locking groove 1011 or the second locking groove 2011, the locking mechanism 500 is unlocked.
The locking mechanism 500 further includes an unlocking means for driving the locking block 501 to move left and right in the locking cavity 502, the unlocking means includes a rotatable unlocking handle 503, the unlocking handle 503 can push the locking block 501 to move left and/or right when rotating, specifically, the unlocking handle 503 and the backrest bracket 100 are arranged on two sides of the rear wheel bracket 200, the unlocking handle 503 is rotatably arranged on the rear wheel bracket 200, an end 5031 of the unlocking handle 503 extends into the through hole 201 to form a rotating shaft of the unlocking handle 503 relative to the rear wheel bracket 200, a rotating axis of the unlocking handle 503 coincides with an axis of the through hole 201, an end 5031 of the unlocking handle 503 has a slope 5032, the slope 5032 contacts with one end face of the locking block 501, and when the unlocking handle 503 rotates, a contact point between the slope 5032 and the locking block 501 moves left or right, thereby pushing the locking block 501 to move left or right in the locking cavity 502.
In this embodiment, in order to adapt to rear wheel brackets 200 with different sizes, especially when the axial length of through hole 201 varies greatly, locking mechanism 500 according to the present invention can also be applied, and a top block 505 is further disposed between inclined surface 5032 and locking block 501, and inclined surface 5032 contacts with locking block 501 through top block 505, so as to enhance versatility of locking mechanism 500 by replacing top blocks 505 with different lengths.
In order to prevent the locking tooth 5011 on the locking block 501 from disengaging from the second locking groove 2011 when moving in the second locking groove 2011, an annular flange 2012 is further disposed in the through hole 201, and a side surface of the annular flange 2012 is attached to an end of the second locking groove 2011 away from the first locking groove 1011.
The axis of the blind hole 101 coincides with the axis of the through hole 201, and the orifice portion of the blind hole 101 extends into the through hole 201 to form a rotation axis for the rear wheel bracket 200 to rotate relative to the backrest bracket 100.
The locking mechanism 500 further comprises a spring 504, one end of the spring 504 abuts against the bottom wall of the blind hole 101, the other end of the spring 504 abuts against the side wall, close to the blind hole 101, of the locking block 501, the spring 504 has a tendency to drive the locking block 501 to move away from the blind hole 101, and the spring 504 can facilitate resetting of the locking mechanism 500.
In order to improve riding comfort, the foldable wheelchair 10 provided by the invention further comprises a back rest 601, a pedal 602 and a grab bar 603, wherein the back rest 601 is rotatably arranged on the back rest bracket 100, the pedal 602 is rotatably arranged on a pedal mounting tube 6021, the end part of the pedal mounting tube 6021 is fixedly arranged on the front wheel bracket 400, the grab bar 603 is rotatably arranged on the back rest bracket 100, the grab bar 603 is positioned above the seat mechanism 300, and the upper surface of the grab bar 603 is parallel to the seat surface 302 of the seat mechanism 300.
In order to facilitate movement, the foldable wheelchair 10 provided by the invention further comprises a hub motor 701, a battery box 702 and a controller 703, wherein the hub motor 701 is arranged on the rear wheel 12, the hub motor 701 is used for driving the rear wheel 12 to rotate, the rotation axis of the output shaft of the hub motor 701 coincides with the rotation axis of the rear wheel 12, the battery box 702 is detachably arranged on the rear wheel bracket 200, the battery box 702 is positioned below the seat surface 302 of the seat mechanism 300, the center of gravity of the foldable wheelchair 10 is lowered, the stability of the foldable wheelchair is improved, the battery box 702 can be conveniently detached, the controller 703 is used for controlling the rotation speed and the rotation direction of the hub motor 701, and the controller 703 is arranged at the end part of the grab bar 603, so that the foldable wheelchair is convenient for a rider to operate.
The foldable wheelchair 10 provided by the invention further comprises a through bolt 800 for preventing the rear wheel bracket 200 from being far away from the backrest bracket 100 along the left-right direction, one end of the through bolt 800 is abutted against the rear wheel bracket 200, the other end of the through bolt is fixed on the backrest bracket 100 through a nut, and the axial lead of the through bolt 800 is overlapped with the rotation axial lead of the rear wheel bracket 200 relative to the backrest bracket 100.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (9)
1. A collapsible wheelchair comprising:
A backrest bracket;
the upper end part of the rear wheel bracket is rotationally connected with the lower end part of the backrest bracket, and the bottom of the rear wheel bracket is provided with a rear wheel;
a seat mechanism rotatably provided on the back support, the seat mechanism having an extension rod extending forward and downward;
The front end part of the front wheel bracket is rotationally connected with the front end part of the extension rod, and the rear end part of the front wheel bracket is rotationally connected with the rear wheel bracket;
a locking mechanism for locking the relative positions of the rear wheel bracket and the backrest bracket;
The method is characterized in that:
The locking mechanism comprises a locking block and a locking cavity for accommodating the locking block, the locking cavity extends along the left-right direction, and the locking block is arranged in the locking cavity in a left-right movable manner;
The locking cavity comprises a first locking cavity arranged at the lower end part of the backrest bracket and a second locking cavity arranged at the upper end part of the rear wheel bracket, a blind hole is formed in the lower end part of the backrest bracket, a first locking groove is formed in the inner wall of the blind hole, a cavity in the first locking groove and a cavity in the blind hole jointly form the first locking cavity, a through hole is formed in the upper end part of the rear wheel bracket, a second locking groove is formed in the inner wall of the through hole, and a cavity in the second locking groove and a cavity in the through hole jointly form the second locking cavity;
When the locking block is positioned in the first locking cavity and the second locking cavity at the same time, the locking mechanism is locked, and when the locking block is positioned in the first locking cavity or the second locking cavity only, the locking mechanism is unlocked, and the locking mechanism further comprises an unlocking device for driving the locking block to move left and right in the locking cavity.
2. The foldable wheelchair of claim 1, wherein a locking tooth is provided on an outer wall of the locking block, the locking mechanism is locked when the locking tooth is simultaneously inserted into the first locking groove and the second locking groove, and the locking mechanism is unlocked when the locking tooth is inserted into only the first locking groove or the second locking groove.
3. The collapsible wheelchair of claim 1 wherein an annular flange is disposed in the through bore, a side of the annular flange abutting an end of the second locking groove remote from the first locking groove, the annular flange being adapted to prevent the locking block from disengaging the second locking groove when moved within the second locking groove.
4. The foldable wheelchair according to claim 1, wherein an axis of the blind hole coincides with an axis of the through hole, and a rotation shaft of the rear wheel bracket with respect to the backrest bracket is formed by the hole portion of the blind hole extending into the through hole or by the hole portion of the through hole extending into the blind hole.
5. The collapsible wheelchair of claim 1 wherein the locking mechanism further comprises a spring having one end abutting against a bottom wall of the blind bore and the other end abutting against a side wall of the locking block adjacent the blind bore, the spring having a tendency to urge the locking block in a direction away from the blind bore.
6. The foldable wheelchair of claim 1, wherein the unlocking means comprises a rotatable unlocking handle, the end of the unlocking handle having a ramp surface which contacts an end surface of the locking block, the contact point of the ramp surface with the locking block moving leftwards and/or rightwards when the unlocking handle is rotated, pushing the locking block to move leftwards and/or rightwards within the locking cavity.
7. The foldable wheelchair of claim 6, wherein the unlocking handle is rotatably disposed on the rear wheel bracket, and an end portion of the unlocking handle extends into the through hole to form a rotation axis of the unlocking handle relative to the rear wheel bracket, and a rotation axis of the unlocking handle coincides with an axis of the through hole.
8. The foldable wheelchair of any one of claims 1-7 further comprising a back rest rotatably disposed on the back rest support, a foot rest rotatably disposed on a foot rest mounting tube, an end of the foot rest mounting tube secured to the front wheel support, and a grab bar rotatably disposed on the back rest support, the grab bar being located above the seating mechanism.
9. The collapsible wheelchair of claim 8 wherein: the foldable wheelchair further comprises a hub motor, a battery box and a controller, wherein the hub motor is arranged on the rear wheel, the hub motor is used for driving the rear wheel to rotate, the rotation axis of an output shaft of the hub motor is coincident with that of the rear wheel, the battery box is detachably arranged on the rear wheel support, the controller is used for controlling the rotation speed and the rotation direction of the hub motor, and the controller is arranged at the end part of the grab rail.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010289605.2A CN111374842B (en) | 2020-04-14 | 2020-04-14 | Foldable wheelchair |
| PCT/CN2021/075506 WO2021208573A1 (en) | 2020-04-14 | 2021-02-05 | Foldable wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010289605.2A CN111374842B (en) | 2020-04-14 | 2020-04-14 | Foldable wheelchair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111374842A CN111374842A (en) | 2020-07-07 |
| CN111374842B true CN111374842B (en) | 2024-06-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010289605.2A Active CN111374842B (en) | 2020-04-14 | 2020-04-14 | Foldable wheelchair |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111374842B (en) |
| WO (1) | WO2021208573A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111374842B (en) * | 2020-04-14 | 2024-06-14 | 浙江爱司米电气有限公司 | Foldable wheelchair |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201404380Y (en) * | 2009-05-06 | 2010-02-17 | 徐光明 | Portable foldable wheelchair |
| CN212235014U (en) * | 2020-04-14 | 2020-12-29 | 浙江爱司米电气有限公司 | Foldable wheelchair |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4101143A (en) * | 1977-01-03 | 1978-07-18 | American Safety Equipment Corporation | Wheelchairs |
| CN208838371U (en) * | 2018-03-13 | 2019-05-10 | 南京康尼智能技术有限公司 | A kind of fully collapsible invalid's chair locking device |
| CN209422282U (en) * | 2018-03-13 | 2019-09-24 | 南京康尼智能技术有限公司 | A kind of fully collapsible invalid's chair |
| CN110179602A (en) * | 2019-05-10 | 2019-08-30 | 南京康尼智能技术有限公司 | Folding wheel chair |
| CN110251326A (en) * | 2019-07-09 | 2019-09-20 | 苏州凯道智能设备有限公司 | A kind of foldable electric wheeled chair |
| CN111374842B (en) * | 2020-04-14 | 2024-06-14 | 浙江爱司米电气有限公司 | Foldable wheelchair |
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2020
- 2020-04-14 CN CN202010289605.2A patent/CN111374842B/en active Active
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2021
- 2021-02-05 WO PCT/CN2021/075506 patent/WO2021208573A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201404380Y (en) * | 2009-05-06 | 2010-02-17 | 徐光明 | Portable foldable wheelchair |
| CN212235014U (en) * | 2020-04-14 | 2020-12-29 | 浙江爱司米电气有限公司 | Foldable wheelchair |
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| Publication number | Publication date |
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| CN111374842A (en) | 2020-07-07 |
| WO2021208573A1 (en) | 2021-10-21 |
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