CN111374842A - Foldable wheelchair - Google Patents
Foldable wheelchair Download PDFInfo
- Publication number
- CN111374842A CN111374842A CN202010289605.2A CN202010289605A CN111374842A CN 111374842 A CN111374842 A CN 111374842A CN 202010289605 A CN202010289605 A CN 202010289605A CN 111374842 A CN111374842 A CN 111374842A
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- Prior art keywords
- locking
- rear wheel
- cavity
- hole
- bracket
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- 238000000034 method Methods 0.000 claims description 2
- 230000004323 axial length Effects 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
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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
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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
- A61G5/0833—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
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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
- A61G5/0883—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
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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
- A61G5/0891—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
The invention provides a foldable wheelchair, which is characterized in that a locking mechanism comprising a locking block, a locking cavity and an unlocking device is arranged, the locking cavity extends along the left-right direction, the locking cavity comprises a first locking cavity arranged at the lower end part of a backrest support and a second locking cavity arranged at the upper end part of a rear wheel support, the locking block is arranged in the locking cavity in a left-right moving manner, 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, the locking mechanism is simple and compact in structure, the locking block is driven to move left and right in the locking cavity by the unlocking device, the use is convenient, and the locking mechanism is high in safety, high in safety and difficult to damage due to the fact that the locking block and the locking cavity are matched and positioned in the rod piece, The service life is long, and the foldable wheelchair provided by the invention has beautiful appearance and strong high-grade feeling.
Description
Technical Field
The invention relates to the field of medical equipment, in particular 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 chair that current wheelchair adopted fixed knot to construct erects to make in the pivot of a pair of gyro wheel more, the diameter of gyro wheel is great, make the upper portion of gyro wheel can be convenient enough by user's hand, the user rotates the gyro wheel through the hand and makes the wheelchair advance or retreat, this kind of wheelchair can't be folded, need occupy great space, also there are some folding wheelchairs in the market, but these wheelchairs often have a plurality of locking mechanical system that are used for locking different parts, during the unblock, just can fold the wheelchair after needing to unblock in a plurality of positions, it is very inconvenient to use, and locking mechanical system's cooperation structure is mostly exposed outside, not only there is the potential safety hazard, also make locking mechanical system fragile, short service life, still seriously influence the outward appearance of wheelchair, make the senior sense of wheelchair poor.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a foldable wheelchair, the locking mechanism of the wheelchair is simple and compact, the use is convenient, the matching structure of the locking mechanism is positioned in a rod piece, the safety is high, the damage is not easy to occur, the service life is long, the appearance is attractive, and the high-grade feeling is strong.
In order to achieve the above object, the present invention provides a foldable wheelchair, comprising:
a backrest support;
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 backrest support, the seat mechanism having an extension rod extending forward and downward;
the front wheel bracket is provided with a front wheel at the bottom, 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 back bracket;
locking mechanical system includes the locking piece and is used for holding the locking chamber of locking piece, the locking chamber extends along left right direction, the locking chamber is including setting up the first locking chamber and the second locking chamber that sets up at rear wheel support upper end under the back support tip, the locking piece can remove the ground and set up in the locking chamber the locking piece is located simultaneously first locking intracavity with during the second locking intracavity, locking mechanical system locks the locking piece only is located first locking intracavity or during the second locking intracavity, locking mechanical system unblock, locking mechanical system still is including being used for the drive the locking piece is in remove unlocking device about the locking intracavity.
The blind hole has been seted up to the lower tip of back support, 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, the outer wall of the locking block is provided with locking teeth, when the locking teeth are simultaneously inserted into the first locking groove and the second locking groove, the locking mechanism is locked, and when the locking teeth are only inserted into the first locking groove or the second locking groove, the locking mechanism is unlocked.
Further preferably, an annular flange is arranged in the through hole, one side face of the annular flange is attached to the end portion, away from the first locking groove, of the second locking groove, and the annular flange is used for preventing the locking block from being separated from the second locking groove when the locking block moves in the second locking groove.
Further preferably, the axis of the blind hole coincides with the axis of the through hole, and the rotating shaft of the rear wheel bracket relative to the backrest bracket extends into the through hole from the opening of the blind hole or extends into the blind hole from the opening of the through 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, close to the blind hole, of the locking block, and the spring has a tendency of driving 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, so that the locking block is pushed leftwards and/or rightwards in the locking cavity.
Further preferably, the unlocking handle is rotatably arranged on the rear wheel bracket, the end of the unlocking handle extends into the through hole to form a rotating shaft for rotating the unlocking handle relative to the rear wheel bracket, and the rotating shaft axis of the unlocking handle coincides with the shaft axis of the through hole.
Further preferably, the foldable wheelchair further comprises a back board, a pedal and a grab bar, wherein the back board is rotatably arranged on the back support, the pedal is rotatably arranged on the pedal mounting pipe, the end part of the pedal mounting pipe is fixedly arranged on the front wheel support, the grab bar is rotatably arranged on the back support, and the grab bar is positioned above the seat mechanism.
Further preferably, the foldable wheelchair further comprises an in-wheel motor, a battery box and a controller, the in-wheel motor is arranged on the rear wheel and used for driving the rear wheel to rotate, a rotating axis of an output shaft of the in-wheel motor coincides with a rotating axis of the rear wheel, the battery box is detachably arranged on the rear wheel support, the controller is used for controlling the rotating speed and the rotating direction of the in-wheel motor, and the controller is arranged at the end part of the grab bar.
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 is characterized in that a locking mechanism comprising a locking block, a locking cavity and an unlocking device is arranged, the locking cavity extends along the left-right direction, the locking cavity comprises a first locking cavity arranged at the lower end part of a backrest support and a second locking cavity arranged at the upper end part of a rear wheel support, the locking block is arranged in the locking cavity in a left-right moving manner, 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, the locking mechanism is simple and compact in structure, the locking block is driven to move left and right in the locking cavity by the unlocking device, the use is convenient, and the locking mechanism is high in safety, high in safety and difficult to damage due to the fact that the locking block and the locking cavity are matched and positioned in the rod piece, The service life is long, and the foldable wheelchair provided by the invention has beautiful appearance and strong high-grade feeling.
Drawings
Fig. 1 is a 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 an assembly schematic of the locking mechanism of the present invention.
Wherein: 10. a collapsible wheelchair; 11. a front wheel; 12. a rear wheel; 100. a backrest support; 101. blind holes; 1011. a first locking groove; 200. a rear wheel support; 201. a through hole; 2011. a second locking slot; 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. a locking tooth; 502. a locking cavity; 5021. a first locking cavity; 5022. a second locking cavity; 503. unlocking the carrying handle; 5031. an end portion; 5032. a bevel; 504. a spring; 505. a top block; 601. a back board; 602. a foot pedal; 6021. a foot board mounting rod; 603. a grab rail; 701. a hub motor; 702. a battery box; 703. a controller; 800. and a through bolt.
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 as viewed by a user when seated in the wheelchair provided by the present invention.
As shown in FIGS. 1-3, the present invention provides a collapsible wheelchair 10 comprising: the seat back comprises a backrest 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 the upper end part of the rear wheel support 200 is rotatably connected with the lower end part of the backrest support 100, the rear wheel 12 is rotatably arranged at the bottom part of the rear wheel support 200, the seat mechanism 300 is rotatably arranged on the backrest support 100, the seat mechanism 300 is provided with a seat surface 302 for supporting the hip of an occupant and an extension rod 301 extending forwards and downwards, the front wheel 11 is rotatably arranged at the bottom part of the front wheel support 400, the front end part of the front wheel support 400 is rotatably connected with the front end part of the extension rod 301, the rear end part of the front wheel support 400 is rotatably connected with the rear wheel support 200, when the rear wheel support 200 rotates relative to the backrest support 100 in the direction close to the front wheel support 400, the seat mechanism 300 and the backrest support 100 can be driven to be close to the front wheel support 400, the collapsible wheelchair 10 is transformed into the collapsed 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 moving manner, 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, specifically, 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 a first locking groove 1011, the first locking groove 1011 has four blind holes and is uniformly distributed on the inner wall of the blind hole 101, the cavity in the first locking groove 1011 and the cavity in the first locking groove 101 jointly form the first locking cavity 1, the upper end of the rear wheel bracket 200 is provided with a through hole 201, a second locking groove 2011 is arranged on the inner wall of the through hole 201, the number of the second locking grooves 2011 is four, the second locking grooves 2011 are uniformly distributed on the inner wall of the through hole 201, a cavity in the second locking groove 2011 and a 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 is aligned with the blind hole 101, the locking cavity 502 is positioned inside two rod pieces of 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, the locking mechanism 500 is locked, and when the locking teeth 5011 are only inserted into the first locking groove 1011 or the second locking groove 2011.
The locking mechanism 500 further comprises unlocking means for driving the locking block 501 to move to the left and right within the locking cavity 502, the unlocking device comprises a rotatable unlocking handle 503, when the unlocking handle 503 rotates, the unlocking handle 503 can push the locking block 501 to move leftwards and/or rightwards, specifically, the unlocking handle 503 and the backrest bracket 100 are respectively arranged at two sides of the rear wheel bracket 200, the unlocking handle 503 is rotatably arranged on the rear wheel bracket 200, the end portion 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, the rotating shaft axis of the unlocking handle 503 is coincident with the shaft axis of the through hole 201, the end portion 5031 of the unlocking handle 503 is provided with an inclined surface 5032, the ramp 5032 contacts an end of the lock block 501 and, when the unlocking handle 503 is rotated, the contact point of the ramp 5032 with the lock block 501 moves left or right, thereby pushing the lock block 501 to move left or right within the lock cavity 502.
In this embodiment, in order to adapt to rear wheel brackets 200 with different sizes, especially when the axial length of the through hole 201 is greatly changed, the locking mechanism 500 of the present invention can also be applied, a top block 505 is further disposed between the inclined surface 5032 and the locking block 501, the inclined surface 5032 is in contact with the locking block 501 through the top block 505, and the universality of the locking mechanism 500 is enhanced by replacing the top block 505 with different lengths.
In order to prevent the locking teeth 5011 of the locking block 501 from being disengaged from the second locking groove 2011 when they move in the second locking groove 2011, an annular flange 2012 is further provided in the through hole 201, and one side surface of the annular flange 2012 is attached to the end of the second locking groove 2011 away from the first locking groove 1011.
The axial lead of the blind hole 101 coincides with the axial lead of the through hole 201, and the opening of the blind hole 101 extends into the through hole 201 to form a rotating shaft for rotating the rear wheel bracket 200 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 of the locking block 501 close to the blind hole 101, the spring 504 has a tendency to drive the locking block 501 to move away from the blind hole 101, and the spring 504 is arranged to facilitate the resetting of the locking mechanism 500.
In order to improve the riding comfort, the foldable wheelchair 10 provided by the invention further comprises a back rest plate 601, a pedal 602 and a grab bar 603, wherein the back rest plate 601 is rotatably arranged on the back rest bracket 100, the pedal 602 is rotatably arranged on the 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 an in-wheel motor 701, a battery box 702 and a controller 703, wherein the in-wheel motor 701 is arranged on the rear wheel 12, the in-wheel motor 701 is used for driving the rear wheel 12 to rotate, a rotating axis of an output shaft of the in-wheel motor 701 coincides with a rotating axis of the rear wheel 12, the battery box 702 is detachably arranged on the rear wheel support 200, the battery box 702 is positioned below the seat surface 302 of the seat mechanism 300, the gravity center 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 rotating speed and the rotating direction of the in-wheel motor 701, and the controller 703 is arranged at the end of the armrest rod 603, so that the operation of a rider is.
The foldable wheelchair 10 further includes a through bolt 800 for preventing the rear wheel bracket 200 from being away from the backrest bracket 100 in the left-right direction, one end of the through bolt 800 abuts against the rear wheel bracket 200, the other end is fixed to the backrest bracket 100 through a nut, and the axis of the through bolt 800 coincides with the rotation axis of the rear wheel bracket 200 relative to the backrest bracket 100.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (10)
1. A collapsible wheelchair comprising:
a backrest support;
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 backrest support, the seat mechanism having an extension rod extending forward and downward;
the front wheel bracket is provided with a front wheel at the bottom, 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 back bracket;
the method is characterized in that:
locking mechanical system includes the locking piece and is used for holding the locking chamber of locking piece, the locking chamber extends along left right direction, the locking chamber is including setting up the first locking chamber and the second locking chamber that sets up at rear wheel support upper end under the back support tip, the locking piece can remove the ground and set up in the locking chamber the locking piece is located simultaneously first locking intracavity with during the second locking intracavity, locking mechanical system locks the locking piece only is located first locking intracavity or during the second locking intracavity, locking mechanical system unblock, locking mechanical system still is including being used for the drive the locking piece is in remove unlocking device about the locking intracavity.
2. The foldable wheelchair as claimed in claim 1, wherein the backrest support has a blind hole at a lower end thereof, a first locking groove is formed in an inner wall of the blind hole, the first locking cavity comprises a cavity in the first locking groove, a through hole is formed at an upper end thereof, a second locking groove is formed in an inner wall of the through hole, and the second locking cavity comprises a cavity in the second locking groove.
3. The foldable wheelchair as claimed in claim 2, wherein the locking block is provided on an outer wall thereof with a locking tooth, 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.
4. The foldable wheelchair of claim 2, wherein an annular flange is provided in the through hole, one side of the annular flange being fitted to 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 moving within the second locking groove.
5. The foldable wheelchair as claimed in claim 2, wherein the axis of the blind hole coincides with the axis of the through hole, and the rotation axis of the rear wheel support relative to the backrest support is formed by the opening of the blind hole extending into the through hole or the opening of the through hole extending into the blind hole.
6. The foldable wheelchair as recited in claim 2, wherein the locking mechanism further comprises a spring, one end of the spring abuts against a bottom wall of the blind hole, the other end of the spring abuts against a side wall of the locking block adjacent to the blind hole, and the spring has a tendency to urge the locking block to move away from the blind hole.
7. The foldable wheelchair as claimed in claim 2, wherein the unlocking means comprises a rotatable unlocking handle, the end of the unlocking handle having a slope which contacts an end surface of the locking block, and the contact point of the slope with the locking block moves leftward and/or rightward when the unlocking handle rotates, pushing the locking block to move leftward and/or rightward in the locking cavity.
8. The foldable wheelchair as claimed in claim 7, wherein the unlocking handle is rotatably provided on the rear wheel frame, an end of the unlocking handle protrudes into the through hole to form a rotation shaft of the unlocking handle relative to the rear wheel frame, and a rotation axis of the unlocking handle coincides with an axis of the through hole.
9. The foldable wheelchair as claimed in any one of claims 1 to 8, further comprising a back plate rotatably provided on the back support, a footboard rotatably provided on a footboard mounting pipe having an end fixedly provided on the front wheel support, and a grab bar rotatably provided on the back support, the grab bar being located above the seat mechanism.
10. The foldable wheelchair as recited in claim 9, wherein: but folding wheelchair still includes in-wheel motor, battery box and controller, in-wheel motor sets up on the rear wheel, in-wheel motor is used for the drive the rear wheel rotates, the rotation axis of in-wheel motor output shaft with the rotation axis of rear wheel coincides mutually, battery box detachably sets up on the rear wheel support, the controller is used for controlling in-wheel motor's rotational speed and turning to, the controller sets up the tip of bar.
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 true CN111374842A (en) | 2020-07-07 |
| CN111374842B CN111374842B (en) | 2024-06-14 |
Family
ID=71222021
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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021208573A1 (en) * | 2020-04-14 | 2021-10-21 | 浙江爱司米电气有限公司 | Foldable wheelchair |
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|---|---|---|---|---|
| CN201404380Y (en) * | 2009-05-06 | 2010-02-17 | 徐光明 | Portable foldable wheelchair |
| 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 |
| CN212235014U (en) * | 2020-04-14 | 2020-12-29 | 浙江爱司米电气有限公司 | Foldable wheelchair |
Family Cites Families (5)
| 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 |
| 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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- 2021-02-05 WO PCT/CN2021/075506 patent/WO2021208573A1/en active Application Filing
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 |
| 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 |
| CN212235014U (en) * | 2020-04-14 | 2020-12-29 | 浙江爱司米电气有限公司 | Foldable wheelchair |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021208573A1 (en) * | 2020-04-14 | 2021-10-21 | 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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| CN111374842B (en) | 2024-06-14 |
| WO2021208573A1 (en) | 2021-10-21 |
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