CN111449861A - Foldable wheelchair - Google Patents
Foldable wheelchair Download PDFInfo
- Publication number
- CN111449861A CN111449861A CN202010289599.0A CN202010289599A CN111449861A CN 111449861 A CN111449861 A CN 111449861A CN 202010289599 A CN202010289599 A CN 202010289599A CN 111449861 A CN111449861 A CN 111449861A
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- Prior art keywords
- bracket
- end part
- support
- wheel
- front wheel
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- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000630 rising effect 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
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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
- A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
- A61G5/047—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven by a modular detachable drive system
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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
- A61G5/0866—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
- A61G5/10—Parts, details or accessories
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1051—Arrangements for steering
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
- A61G5/128—Rests specially adapted therefor, e.g. for the head or the feet for feet
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- 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)
- Automatic Cycles, And Cycles In General (AREA)
Abstract
The invention provides a foldable wheelchair, wherein the upper end part of a rear wheel bracket is rotatably connected with the lower end part of a backrest bracket, the rear end part of a front wheel bracket is rotatably connected with the upper part of the rear wheel bracket, the rear end part of a seat plate is rotatably connected with the middle part of the backrest bracket, the upper end part of a seat supporting rod is rotatably connected with the front part of the seat plate, the front part of a bottom supporting rod is rotatably connected with the front part of the front wheel bracket, the middle part of the bottom supporting rod is rotatably connected with the lower end part of the seat supporting rod, the rear end part of the bottom supporting rod is rotatably connected with the lower part of the backrest bracket, so that four connecting rods are formed among the backrest bracket, the rear wheel bracket, the bottom supporting rod and the front wheel bracket, and the four connecting rods are also formed among the backrest bracket, the seat plate, the seat supporting rod and the bottom supporting rod, and when a locking mechanism is unlocked, the wheelchair can be converted into a folded state through the rotation of the, simple structure and convenient use.
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 more erects and forms in a pair of gyro wheel pivot, 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 hand and makes the wheelchair advance or retreat, this kind of wheelchair can't be folded, need occupy great space, also have some folding wheelchairs in the market, but most structure is complicated, and need both hands to operate when folding, it is very inconvenient to use.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a foldable wheelchair which is simple in structure and convenient to use.
In order to achieve the above object, the present invention provides a foldable wheelchair, including side frames respectively disposed on left and right sides and having the same structure, a transverse link connecting the side frames between the side frames, a front wheel disposed in front of and below the side frames, and a rear wheel disposed in rear of and below the side frames, wherein the side frames have an unfolded state and a folded state, and the side frames on the same side include:
the end part of the transverse connecting rod is connected with the upper end part of the 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 rear wheel is rotationally arranged at the lower end part of the rear wheel bracket;
the front wheel bracket extends along the front-back direction, the rear end part of the front wheel bracket is higher than the front end part of the front wheel bracket, the rear end part of the front wheel bracket is rotatably connected to the upper part of the rear wheel bracket, and the front wheel is rotatably arranged at the front end part of the front wheel bracket;
a seat mechanism comprising a seat plate, a bottom brace, and a seat brace;
the rear end part of the seat plate is rotatably connected to the middle part of the backrest support, the front end part of the bottom support rod is rotatably connected with the front part of the front wheel support, the rear end part of the bottom support rod is rotatably connected to the lower part of the backrest support, the seat support rod is positioned below the seat plate, the upper end part of the seat support rod is rotatably connected with the front part of the seat plate, and the lower end part of the seat support rod is rotatably connected with the middle part of the bottom support rod;
the foldable wheelchair further comprises a locking mechanism, when the locking mechanism is in a locking state, the relative positions of the backrest support and the rear wheel support are kept fixed, the side supports are supported on the front wheels and the rear wheels, the side supports are in an unfolding state, when the locking mechanism is in an unlocking state, the rear wheel support can rotate relative to the backrest support in a direction close to the front wheel support, and the backrest support and the seat mechanism are driven to approach the front wheel support, so that the side supports are changed into a folding state;
the foldable wheelchair further comprises an unlocking device for unlocking the locking mechanism.
Preferably, the rear end of the bottom stay is connected with the lower part of the backrest support in a unidirectional rotation manner, and when the side supports are in the unfolded state, the bottom stay can only rotate towards the direction close to the front wheel support relative to the backrest support.
Preferably, the rear end of the front wheel bracket is connected with the upper part of the rear wheel bracket in a unidirectional rotation manner, and when the side bracket is in the unfolding state, the rear wheel bracket can only rotate towards the direction close to the front wheel bracket.
Preferably, the rear wheel is provided with an in-wheel motor for driving the rear wheel to rotate, and a rotation axis of an output shaft of the in-wheel motor coincides with a rotation axis of the rear wheel.
Preferably, the foldable wheelchair further comprises a rotatable control pedal, the control pedal is connected with the switching rod, when the control pedal is stepped on, the switching rod is pressed down, the hub motor is in a power-on/power-off state, when the control pedal is lifted up, the switching rod bounces, and the hub motor is in a power-off/power-on state.
Further preferably, the foldable wheelchair further comprises a battery box for providing power to the in-wheel motor, the battery box is located at the rear part of the foldable wheelchair, and the battery box is erected on the rear wheel bracket.
Further preferably, the backrest support is further connected with a grab bar, the grab bar is rotatably arranged on the backrest support, and when the side support is in the unfolded state, the upper surface of the grab bar is parallel to the upper surface of the seat plate.
Further preferably, the foldable wheelchair further comprises a controller for controlling the rotation speed and the rotation direction of the hub motor, and the controller is arranged in front of the grab bar.
Preferably, the front part of the front wheel bracket is further connected with a pedal mounting rod, a rotatable pedal is arranged in the middle of the pedal mounting rod, and the rotatable angle range of the pedal is 0-30 degrees.
Further preferably, a rotatable back board is arranged on the connecting cross rod, and the rotatable angle range of the back board is 0-30 degrees.
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, wherein the upper end part of a rear wheel bracket is rotatably connected with the lower end part of a backrest bracket, the rear end part of a front wheel bracket is rotatably connected with the upper part of the rear wheel bracket, the rear end part of a seat plate is rotatably connected with the middle part of the backrest bracket, the upper end part of a seat supporting rod is rotatably connected with the front part of the seat plate, the front part of a bottom supporting rod is rotatably connected with the front part of the front wheel bracket, the middle part of the bottom supporting rod is rotatably connected with the lower end part of the seat supporting rod, the rear end part of the bottom supporting rod is rotatably connected with the lower part of the backrest bracket, so that four connecting rods are formed among the backrest bracket, the rear wheel bracket, the bottom supporting rod and the front wheel bracket, and the four connecting rods are also formed among the backrest bracket, the seat plate, the seat supporting rod and the bottom supporting rod, and when a locking mechanism is unlocked, the wheelchair can be converted into a folded state through the rotation of the, simple structure and convenient use.
Drawings
Fig. 1 is a front side perspective view of the present invention.
Fig. 2 is a rear side perspective view of the present invention.
Figure 3 is a left side elevational schematic view of the present invention with the collapsible wheelchair in an expanded condition.
Figure 4 is a left side elevational schematic view of the present invention with the collapsible wheelchair in the process of being moved from an expanded condition to a collapsed condition.
Figure 5 is a left side elevational schematic view of the present invention with the collapsible wheelchair in a collapsed condition.
Fig. 6 is an enlarged partial sectional view taken at a in fig. 3.
Fig. 7 is a schematic top view of the footrest of the present invention.
Fig. 8 is a schematic sectional view in the direction B-B in fig. 7.
Fig. 9 is an assembly view of the bottom stay and the back rest bracket according to the present invention.
FIG. 10 is a front side assembly view of the front and rear wheel brackets of the present invention.
FIG. 11 is a rear side assembly view of the front and rear wheel brackets of the present invention.
FIG. 12 is a schematic view of the rear wheel and hub motor of the present invention.
Fig. 13 is a perspective view of the present invention.
Wherein: 11. a left side bracket; 12. a right side bracket; 13. a left rear wheel; 14. a right rear wheel; 15. a left front wheel; 16. a right front wheel; 20. a transverse connecting rod; 100. a backrest support; 101. a first bump; 200. a rear wheel support; 201. a second bump; 300. a front wheel bracket; 301. a third bump; 400. a seat mechanism; 401. a seat plate; 402. a bottom stay; 4021. a fourth bump; 403. a seat support bar; 500. a locking mechanism; 600. unlocking the carrying handle; 701. a left hub motor; 7011. a left switch lever; 702. a right hub motor; 7021. a right switch lever; 703. a control pedal; 704. a battery box; 705. a controller; 801. a grab rail; 802. a foot board mounting rod; 8021. a foot pedal; 8022. a screw; 8023. a first stopper; 8024. a second limiting block; 803. 8031, bumps; 8032. and (4) a groove.
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 front, rear, left, right, up and down directions described in the present invention refer to the front, rear, left, right, up and down directions in fig. 1.
As shown in fig. 1 to 11, the present invention provides a foldable wheelchair, which comprises two side frames, a cross link 20, a front wheel and a rear wheel, wherein the two side frames are a left side frame 11 located on the left side and a right side frame 12 located on the right side, the cross link 20 is located between the left side frame 11 and the right side frame 12, the cross link 20 connects the left side frame 11 and the right side frame 12, the front wheel comprises a left front wheel 15 located on the front lower side of the left side frame 11 and a right front wheel 16 located on the front lower side of the right side frame 12, the rear wheel comprises a left rear wheel 13 located on the rear lower side of the left side frame 11 and a right rear wheel 14 located on the rear lower side of the right side frame 12, the two side frames have the same structure and have an unfolded state and a folded state, and the left.
The left side bracket 11 comprises a backrest bracket 100, a rear wheel bracket 200, a front wheel bracket 300, a seat mechanism 400, a locking mechanism 500 and an unlocking device, wherein the upper end part of the backrest bracket 100 is connected with the transverse connecting rod 20, the upper end part of the rear wheel bracket 200 is rotatably connected with the lower end part of the backrest bracket 100, and a left rear wheel 13 is rotatably arranged at the lower end part of the rear wheel bracket 200; the front wheel frame 300 extends in the front-rear direction, the rear end portion of the front wheel frame 300 is higher than the front end portion of the front wheel frame 300 to make the front wheel frame 300 assume an inclined state gradually rising from the front to the rear, the rear end portion of the front wheel frame 300 is rotatably coupled to the upper portion of the rear wheel frame 200, and the left front wheel 15 is rotatably provided at the front end portion of the front wheel frame 300.
The seat mechanism 400 is located between the left side frame 11 and the right side frame 12, and the seat mechanism 400 includes a seat plate 401, a bottom stay 402, and a seat support bar 403, wherein a rear end portion of the seat plate 401 is rotatably connected to a center portion of the back frame 100, a front end portion of the bottom stay 402 is rotatably connected to a front portion of the front wheel frame 300, a rear end portion of the bottom stay 402 is rotatably connected to a lower portion of the back frame 100, the seat support bar 403 is located below the seat plate 401, an upper end portion of the seat support bar 403 is rotatably connected to a front portion of the seat plate 401, and a lower end portion of the seat support bar 403 is rotatably connected to a center portion of the bottom stay 402.
As shown in fig. 3 to 5, a flat four-bar linkage is formed between the back frame 100, the rear wheel frame 200, the bottom stay 402 and the front wheel frame 300, and a flat four-bar linkage is formed between the back frame 100, the seat plate 400, the seat support bar 403 and the bottom stay 402, and when the rear wheel frame 200 and the back frame 100 are in a fixed state, the flat four-bar linkage is in a fixed state, and when the rear wheel frame 200 rotates with respect to the back frame 100, the flat four-bar linkage is in a movable state.
The locking mechanism 500 is used to lock the relative positions of the backrest support 100 and the rear wheel support 200, when the locking mechanism 500 is in the locked state, the relative positions of the backrest support 100 and the rear wheel support 200 are kept fixed, the left side support 11 is supported on the left front wheel 15 and the left rear wheel 13, and of course, the right side support 12 is supported on the right front wheel 16 and the right rear wheel 14, so that the left side support 11 and the right side support 12 are both in the unfolded state, when the locking mechanism 500 is in the unlocked state, the rear wheel support 200 can rotate relative to the backrest support 100 in a direction close to the front wheel support 300, and drives the backrest support 100 and the seat mechanism 400 to approach the front wheel support 300, so that the left side support 11 is changed into the folded state, and of course, the right side support 12 is also changed into the folded state at.
The specific structure of the locking mechanism 500 is the prior art, and it is not the invention point of the present invention if the locking tongue locking hole matching and the hook column matching are adopted, and will not be described herein again.
The foldable wheelchair of the present invention further comprises an unlocking device for unlocking the locking mechanism 500, in this example, the unlocking device is an unlocking handle 600, the unlocking handle 600 unlocks the locking mechanism 500 by rotating, the end of the unlocking handle 600 is rotatably disposed on the rear wheel support 200, and the rotation axis of the unlocking handle 600 coincides with the rotation axis of the rear wheel support 200 relative to the backrest support 100.
The rear end portion of the bottom stay 402 is rotatably connected to the lower portion of the back frame 100 in one direction, which is advantageous in that the stability of the left side frame 11 in the unfolded state is enhanced, and in particular, the bottom stay 402 can be rotated only in a direction close to the front wheel frame 300 with respect to the back frame 100, structurally, the rear end portion of the bottom stay 402 is provided with a fourth protrusion 4021, the lower portion of the back bracket 100 is provided with a first protrusion 101, when the bottom stay 402 is rotated relative to the back bracket 100 in a direction away from the front wheel bracket 300, the first protrusion 101 and the fourth protrusion 4021 approach each other, when the bottom stay 402 rotates relative to the back bracket 100 in a direction approaching the front wheel bracket 300, the first protrusion 101 and the fourth protrusion 4021 move away from each other, when the left bracket 11 is in the unfolded state, one side surface of the first projection 101 abuts against one side surface of the fourth projection 4021, so that the bottom stay 402 can only rotate in a direction approaching the front wheel carrier 300 with respect to the back rest carrier 100.
Similarly, the rear end of the front wheel bracket 300 is connected to the upper portion of the rear wheel bracket 200 in a unidirectional rotation manner, which is advantageous in enhancing the stability of the left side bracket 11 in the unfolded state, and specifically, the rear end of the front wheel bracket 300 is provided with a third protrusion 301, the upper portion of the rear wheel bracket 200 is provided with a second protrusion 201, when the front wheel bracket 300 rotates in a direction away from the rear wheel bracket 200, the second protrusion 201 and the third protrusion 301 approach each other, when the front wheel bracket 300 rotates in a direction towards the rear wheel bracket 200, the second protrusion 201 and the third protrusion 301 move away from each other, and when the left side bracket 11 is in the unfolded state, a side surface of the second protrusion 201 abuts against a side surface of the third protrusion 301, so that the front wheel bracket 300 can only rotate in a direction towards the rear wheel bracket 200.
In order to facilitate the use of the rider, the foldable wheelchair of the present invention is provided with an in-wheel motor for driving the rear wheel to rotate, specifically, the left rear wheel 13 is provided with a left in-wheel motor 701, the right rear wheel 14 is provided with an in-wheel motor 702, the axial line of the output shaft of the left in-wheel motor 701/the right in-wheel motor 702 coincides with the rotational axial line of the left rear wheel 13/the right rear wheel 14, in order to conveniently switch the foldable wheelchair between an electric driving mode and a manual pushing mode, the in-wheel motor is provided with a liftable switching rod for controlling the in-wheel motor to be powered on or powered off, the in-wheel motor is the prior art, the internal structure thereof is not the invention of the present invention, and is not repeated herein, in order to press the switching rods on the left in-wheel motor 701 and the right in-wheel motor 702 at the same time, the foldable wheelchair further comprises a rotatable control pedal 703, the control pedal 703 is rotatably erected on the left hub motor 701 and the right hub motor 702, the lower surface of the control pedal 703 is connected with the left switching rod 7011 of the left hub motor 701 and the right switching rod 7021 of the right hub motor 702, when the control pedal 703 is stepped on, the left switching rod 7011 and the right switching rod 7021 are simultaneously pressed down to simultaneously power on/off the left hub motor 701 and the right hub motor 702, and when the control pedal 703 is lifted, the left switching rod 7011 and the right switching rod 7021 are simultaneously bounced to simultaneously power off/on the left hub motor 701 and the right hub motor 702, so that the foldable wheelchair is switched between an electric driving mode and a manual pushing mode.
Further, the foldable wheelchair further comprises a battery box 704 for providing power for the in-wheel motor, the battery box 704 is located at the rear part of the foldable wheelchair, and specifically, the battery box 704 is erected on the rear wheel bracket 200, so that the battery box 704 can be conveniently detached and installed.
To support the arm parts of the occupant, the back rest support 100 is further connected with a grab bar 801, the grab bar 801 is rotatably provided on the back rest support 100, and when the side supports are in the unfolded state, the upper surface of the grab bar 801 is kept parallel to the upper surface of the seat plate 401.
For convenient control of the in-wheel motor, the foldable wheelchair further comprises a controller 705 for controlling the rotation speed and the rotation direction of the in-wheel motor, and for convenient operation of a rider, the controller 705 is arranged at the front part of the grab bar 801.
In order to support the feet of the rider, a footrest mounting rod 802 is further connected to the front portion of the front wheel bracket 300, and a rotatable footrest 8021 is disposed in the middle of the footrest mounting rod 802, so that the feet of the rider can move to a certain extent and the riding comfort is improved, preferably, the rotatable angle range of the footrest 8021 is 0-30 °, specifically, a screw 8022 longitudinally penetrating through the footrest mounting rod 802 is disposed on the footrest mounting rod 802, the end of the screw 8022 protruding out of the outer circumferential surface of the footrest mounting rod 802 is inserted between a first stopper 8023 and a second stopper 8024 on the footrest 8021, and when the footrest 8021 rotates around the footrest mounting rod 802, the end of the screw 8022 protruding out of the outer circumferential surface of the footrest mounting rod 802 abuts against the first stopper 8023 or the second stopper 8024, so as to limit the rotation angle of the footrest 8021.
In order to support the back of the rider, the connecting cross bar 20 is provided with a rotatable backrest plate 803, which can provide a comfortable backrest angle for the rider by rotating the backrest plate 803, so as to improve the riding comfort, preferably, the rotatable angle range of the backrest plate 803 is 0-30 °, specifically, the cross link 20 is provided with a projection 8031, the projection 8031 is inserted into a groove 8032 of the backrest plate 803, and when the backrest plate 803 rotates around the cross link 20, the projection 8031 abuts against the side wall of the groove 8032, so as to limit the rotation angle of the backrest plate 803.
The front end portion, the rear end portion, the upper end portion, and the lower end portion according to the present invention refer to portions near the end surface of the bar or the bracket, and the front/rear/upper/lower portion according to the present invention refers to portions between the front/rear/upper/lower end portions of the bar or the bracket and the middle portion of the bar or the bracket, for example, the lower portion of the back bracket 100 is located above the lower end portion of the back bracket 100, that is, the rotational axes of the bottom stay 500 and the back bracket 100 are located above the rotational axes of the rear wheel bracket 200 and the back 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. The utility model provides a collapsible wheelchair, its characterized in that, including the branch locate the left and right sides the structure is the same collateral branch frame, be located this both sides connect between the collateral branch frame the cross bar of collateral branch frame, locate the preceding front wheel of below, locate the collateral branch frame rear lower side's rear wheel, the collateral branch frame has expansion state and fold condition, the homonymy the collateral branch frame includes:
the end part of the transverse connecting rod is connected with the upper end part of the 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 rear wheel is rotationally arranged at the lower end part of the rear wheel bracket;
the front wheel bracket extends along the front-back direction, the rear end part of the front wheel bracket is higher than the front end part of the front wheel bracket, the rear end part of the front wheel bracket is rotatably connected to the upper part of the rear wheel bracket, and the front wheel is rotatably arranged at the front end part of the front wheel bracket;
a seat mechanism comprising a seat plate, a bottom brace, and a seat brace;
the rear end part of the seat plate is rotatably connected to the middle part of the backrest support, the front end part of the bottom support rod is rotatably connected with the front part of the front wheel support, the rear end part of the bottom support rod is rotatably connected to the lower part of the backrest support, the seat support rod is positioned below the seat plate, the upper end part of the seat support rod is rotatably connected with the front part of the seat plate, and the lower end part of the seat support rod is rotatably connected with the middle part of the bottom support rod;
the foldable wheelchair further comprises a locking mechanism, when the locking mechanism is in a locking state, the relative positions of the backrest support and the rear wheel support are kept fixed, the side supports are supported on the front wheels and the rear wheels, the side supports are in an unfolding state, when the locking mechanism is in an unlocking state, the rear wheel support can rotate relative to the backrest support in a direction close to the front wheel support, and the backrest support and the seat mechanism are driven to approach the front wheel support, so that the side supports are changed into a folding state;
the foldable wheelchair further comprises an unlocking device for unlocking the locking mechanism.
2. The foldable wheelchair as recited in claim 1, wherein: the rear end part of the bottom stay bar is connected with the lower part of the backrest support in a unidirectional rotation mode, and when the side supports are in the unfolded state, the bottom stay bar can only rotate towards the direction close to the front wheel support relative to the backrest support.
3. The foldable wheelchair as recited in claim 1, wherein: the rear end part of the front wheel bracket is connected with the upper part of the rear wheel bracket in a unidirectional rotation mode, and when the side bracket is in an unfolded state, the rear wheel bracket can only rotate towards the direction close to the front wheel bracket.
4. The foldable wheelchair as recited in claim 1, wherein: the rear wheel is provided with a hub motor for driving the rear wheel to rotate, and the rotating axis of an output shaft of the hub motor coincides with the rotating axis of the rear wheel.
5. The foldable wheelchair as recited in claim 4, wherein: the foldable wheelchair comprises a foldable wheel hub motor, and is characterized in that a liftable switching rod is arranged on the wheel hub motor and used for controlling the wheel hub motor to be powered on or powered off, the foldable wheel hub motor further comprises a rotatable control pedal, the control pedal is connected with the switching rod, when the control pedal is stepped on, the switching rod is pressed down, the wheel hub motor is in a powered on/powered off state, when the control pedal is lifted up, the switching rod bounces, and the wheel hub motor is in a powered off/powered on state.
6. The foldable wheelchair as recited in claim 4, wherein: the foldable wheelchair further comprises a battery box used for providing power for the hub motor, the battery box is located at the rear part of the foldable wheelchair, and the battery box is erected on the rear wheel support.
7. The foldable wheelchair as recited in claim 4, wherein: the seat plate is characterized in that the backrest support is also connected with a grab rail, the grab rail is rotatably arranged on the backrest support, and when the side support is in an unfolded state, the upper surface of the grab rail is parallel to the upper surface of the seat plate.
8. The foldable wheelchair as recited in claim 7, wherein: the foldable wheelchair further comprises a controller for controlling the rotating speed and the steering direction of the hub motor, and the controller is arranged at the front part of the grab bar.
9. The foldable wheelchair as recited in claim 1, wherein: the front part of the front wheel bracket is also connected with a pedal mounting rod, the middle part of the pedal mounting rod is provided with a rotatable pedal, and the rotatable angle range of the pedal is 0-30 degrees.
10. The foldable wheelchair as recited in any one of claims 1-9, wherein: the connecting cross rod is provided with a rotatable back board, and the rotatable angle range of the back board is 0-30 degrees.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010289599.0A CN111449861B (en) | 2020-04-14 | 2020-04-14 | Foldable wheelchair |
| PCT/CN2021/076884 WO2021208589A1 (en) | 2020-04-14 | 2021-02-19 | Foldable wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010289599.0A CN111449861B (en) | 2020-04-14 | 2020-04-14 | Foldable wheelchair |
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| Publication Number | Publication Date |
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| CN111449861A true CN111449861A (en) | 2020-07-28 |
| CN111449861B CN111449861B (en) | 2024-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010289599.0A Active CN111449861B (en) | 2020-04-14 | 2020-04-14 | Foldable wheelchair |
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| Country | Link |
|---|---|
| CN (1) | CN111449861B (en) |
| WO (1) | WO2021208589A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112618182A (en) * | 2020-12-30 | 2021-04-09 | 广东博方众济医疗科技有限公司 | Wheelchair walking aid |
| WO2021208589A1 (en) * | 2020-04-14 | 2021-10-21 | 浙江爱司米电气有限公司 | Foldable wheelchair |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114767406A (en) * | 2022-03-08 | 2022-07-22 | 浙江劲雁科技有限公司 | Foldable electric wheelchair |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201404380Y (en) * | 2009-05-06 | 2010-02-17 | 徐光明 | Portable foldable wheelchair |
| CN110179603A (en) * | 2019-05-10 | 2019-08-30 | 南京康尼智能技术有限公司 | A kind of folding wheel chair |
| CN212281928U (en) * | 2020-04-14 | 2021-01-05 | 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 |
| CN208799424U (en) * | 2018-02-02 | 2019-04-30 | 广州视源电子科技股份有限公司 | Folding wheel chair |
| 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 |
| CN111449861B (en) * | 2020-04-14 | 2024-06-14 | 浙江爱司米电气有限公司 | Foldable wheelchair |
-
2020
- 2020-04-14 CN CN202010289599.0A patent/CN111449861B/en active Active
-
2021
- 2021-02-19 WO PCT/CN2021/076884 patent/WO2021208589A1/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 |
| CN110179603A (en) * | 2019-05-10 | 2019-08-30 | 南京康尼智能技术有限公司 | A kind of folding wheel chair |
| CN212281928U (en) * | 2020-04-14 | 2021-01-05 | 浙江爱司米电气有限公司 | Foldable wheelchair |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021208589A1 (en) * | 2020-04-14 | 2021-10-21 | 浙江爱司米电气有限公司 | Foldable wheelchair |
| CN112618182A (en) * | 2020-12-30 | 2021-04-09 | 广东博方众济医疗科技有限公司 | Wheelchair walking aid |
| CN112618182B (en) * | 2020-12-30 | 2023-03-14 | 广东博方众济医疗科技有限公司 | Wheelchair walking aid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111449861B (en) | 2024-06-14 |
| WO2021208589A1 (en) | 2021-10-21 |
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