CN112587326B - A multifunctional wheelchair - Google Patents
A multifunctional wheelchair Download PDFInfo
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- CN112587326B CN112587326B CN202011387414.6A CN202011387414A CN112587326B CN 112587326 B CN112587326 B CN 112587326B CN 202011387414 A CN202011387414 A CN 202011387414A CN 112587326 B CN112587326 B CN 112587326B
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- seat frame
- rod
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- wheelchair
- sliding rod
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- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 230000000903 blocking effect Effects 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000005484 gravity Effects 0.000 abstract description 6
- 230000008093 supporting effect Effects 0.000 description 16
- 230000006872 improvement Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 239000007769 metal material Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 210000001217 buttock Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition 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
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C13/00—Convertible chairs, stools or benches
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/02—Rocking chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
-
- 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
- A61G5/10—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
- A61G5/1056—Arrangements for adjusting the seat
- A61G5/1067—Arrangements for adjusting the seat adjusting the backrest relative to the seat portion
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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)
- Chairs Characterized By Structure (AREA)
Abstract
本发明公开一种多功能轮椅，属于轮椅领域。其中，所述轮椅本体包括：座椅架；靠背架，其底端与座椅架铰接；前轮，其设于座椅架下方且位于座椅架的左右两侧；第一连杆，其设于靠背架的左右两侧且其顶端与靠背架铰接；弧形摇杆，其后端与第一连杆底端铰接；第二连杆，其设于座椅架的左右两侧且其顶端与座椅架连接，第二连杆的底端与弧形摇杆的前端铰接；气弹簧，其顶端与靠背架铰接且其底端与座椅架铰接，气弹簧包括用于控制气弹簧工作的控制开关；折叠机构，其分别与前轮和座椅架连接以驱使前轮摆动。该轮椅能方便行动不便的老人和残疾人独立完成轮椅和摇椅之间的转换，并克服了坐在轮椅上进行轮椅和摇椅两种状态的转换时存在重心不稳的问题。
The present invention discloses a multifunctional wheelchair, belonging to the field of wheelchairs. The wheelchair body includes: a seat frame; a backrest frame, the bottom end of which is hinged to the seat frame; a front wheel, which is arranged below the seat frame and located on the left and right sides of the seat frame; a first connecting rod, which is arranged on the left and right sides of the backrest frame and its top end is hinged to the backrest frame; an arc rocker, the rear end of which is hinged to the bottom end of the first connecting rod; a second connecting rod, which is arranged on the left and right sides of the seat frame and its top end is connected to the seat frame, and the bottom end of the second connecting rod is hinged to the front end of the arc rocker; a gas spring, the top end of which is hinged to the backrest frame and the bottom end of which is hinged to the seat frame, and the gas spring includes a control switch for controlling the operation of the gas spring; a folding mechanism, which is respectively connected to the front wheel and the seat frame to drive the front wheel to swing. The wheelchair can facilitate the elderly and disabled people with limited mobility to independently complete the conversion between a wheelchair and a rocking chair, and overcome the problem of unstable center of gravity when switching between the two states of a wheelchair and a rocking chair while sitting on a wheelchair.
Description
Technical Field
The invention relates to the technical field of wheelchairs, in particular to a multifunctional wheelchair.
Background
The number of people of the elderly in China is numerous, and the number of people of the elderly is increasing.
The consumer demand for related industries involving the elderly population, such as the wheelchair industry, is also increasing.
Currently, the demand of wheelchairs in the market is increasing, but the functions of wheelchairs are still single. With the development of technology, wheelchairs with rocking chair function are developed. However, when the wheelchair is used, it is difficult for the aged and the disabled who have difficulty in moving, to independently complete the conversion between the wheelchair and the rocking chair, and the gravity center is unstable when the wheelchair and the rocking chair are converted when sitting on the wheelchair.
Disclosure of Invention
The present invention aims to provide a multifunctional wheelchair, which solves one or more technical problems existing in the prior art, and at least provides a beneficial choice or creation condition.
The technical scheme adopted for solving the technical problems is as follows:
The invention provides a multifunctional wheelchair, which comprises a wheelchair body, wherein the wheelchair body comprises:
A seat frame;
the bottom end of the backrest frame is hinged with the seat frame;
Front wheels provided below the seat frame, and located at left and right sides of the seat frame, respectively;
the first connecting rod is respectively arranged at the left side and the right side of the backrest frame, and the top end of the first connecting rod is hinged with the backrest frame;
The rear end of the arc-shaped rocker is hinged with the bottom end of the first connecting rod;
The second connecting rod is respectively arranged on the left side and the right side of the seat frame, the top end of the second connecting rod is connected with the seat frame, and the bottom end of the second connecting rod is hinged with the front end of the arc-shaped rocker;
The top end of the gas spring is hinged with the backrest frame, and the bottom end of the gas spring is hinged with the seat frame;
And the folding mechanism is respectively connected with the front wheel and the seat frame and is used for driving the front wheel to swing.
The design that the backrest frame is hinged with the seat frame is adopted, so that the state conversion between the rocking chair and the wheelchair can be realized. The rear end of the arc-shaped rocker is connected to the backrest frame through the first connecting rod, the front end of the arc-shaped rocker is connected to the seat frame through the second connecting rod, and when the backrest frame swings up and down, the arc-shaped rocker is driven to change in two positions of falling to the ground or leaving the ground, so that a user can conveniently switch between the rocking chair and the wheelchair.
The air spring can effectively support the backrest frame, the inclination angle of the backrest frame is adjusted through the telescopic action of the air spring, so that the comfort of a user is improved, when the user leans against the backrest, the air spring controls the arc-shaped rocking rod to slowly swing down, and after the user leaves the backrest, the air spring controls the arc-shaped rocking rod to slowly swing up, and the air spring design is adopted, so that the problem that the gravity center is unstable when the wheelchair and the rocking chair are converted when the wheelchair is sitting on the wheelchair can be effectively solved.
The folding mechanism can be used for folding and unfolding the front wheels, so that the front wheels can play a supporting role in a wheelchair state, and the front wheels are prevented from being blocked in a rocking chair state.
As a further improvement of the above technical solution, the folding mechanism includes:
the fixing support is horizontally arranged, is respectively arranged at the left side and the right side of the seat frame and is connected with the seat frame, and is provided with limiting holes, and the two ends of the limiting holes are arranged front and back;
The bottom end of the supporting rod is connected with the front wheel, and the top end of the supporting rod is hinged with the fixed bracket;
The sliding rod is axially horizontally arranged left and right, is arranged in the limiting hole and can move back and forth along the length direction of the limiting hole;
one end of the connecting piece is hinged with the supporting rod, and the other end of the connecting piece is connected with the sliding rod;
The locking piece is connected with the fixed support, and the locking piece is clamped with the sliding rod.
The support rod is rotatably connected with the fixed support, so that front wheels can swing back and forth, and the folding and unfolding operation of the front wheels can be realized. The connecting piece is respectively hinged with the supporting rod and the sliding rod, the sliding rod can slide back and forth along the limiting hole, the locking piece can be clamped with the sliding rod, when the sliding rod moves to the front end of the limiting hole and is locked by the locking piece, the front wheel can be caused to play a supporting role in a wheelchair state, and when the sliding rod moves to the rear end of the limiting hole and is locked by the locking piece, the front wheel can be prevented from being blocked and influenced in the rocking chair state.
As a further improvement of the above technical solution, the cross-sectional shape of the sliding rod is circular. The cross section shape of the sliding rod is designed into a round shape, so that the friction force of the sliding rod in the limiting hole can be reduced, and the operation of the old is facilitated.
According to the technical scheme, the locking piece is a locking piece, the locking piece is provided with a hinge shaft which is horizontal left and right, the hinge shaft is connected with the fixed support, the hinge shaft is located below the limiting hole, the long end of the locking piece is provided with an arc-shaped end face, the long end of the locking piece is clamped with the sliding rod, the long end of the locking piece is abutted with the fixed support, and the short end of the locking piece can be abutted with the fixed support.
The locking piece passes through the articulated shaft to be connected in the fixed bolster, and the long end of locking piece sets up the arc terminal surface, contacts with the circumference of slide bar through the arc terminal surface, and at this moment, the long end of locking piece is located the top of slide bar, realizes slide bar and locking piece joint, in order to ensure that the front wheel can play stable, powerful supporting role. The short end of the locking piece is acted with upward acting force, the long end of the locking piece can be driven to swing downwards until the long end of the locking piece is positioned below the sliding rod, so that the blocking effect of the locking piece on the sliding rod is relieved, the sliding rod can conveniently move to the rear side of the limiting hole, and the front wheel is folded; and, because the locking piece makes the short end of locking piece and fixed bolster butt because its long end is heavier than the short end to make the short end of locking piece block the slide bar, in order to avoid the front wheel to rock down and cause the hindrance influence under rocking chair state.
As a further improvement of the technical scheme, the fixing support is provided with a groove with a downward opening, the limiting holes are respectively formed in the left side and the right side of the groove, and the locking block is arranged in the groove. The setting of recess is favorable to reinforcing slide bar and fixed bolster's joint strength to also strengthen the joint strength of locking piece and fixed bolster, thereby make the locking piece bear the great effort from the slide bar for a long time, extension folding mechanism's life.
According to the technical scheme, the locking piece is a blocking rod, the blocking rod is vertically arranged, a step hole is formed in the top of the fixed support, the blocking rod is arranged in the step hole, and the bottom end of the blocking rod is clamped with the sliding rod. The step hole is formed in the fixed support, the blocking rod is inserted into the step hole from top to bottom, the sliding rod can be blocked after the blocking rod moves downwards in place, and when the blocking effect of the blocking rod on the sliding rod is required to be relieved, the blocking rod is lifted upwards, so that the operation of old people and disabled people is very convenient.
As a further improvement of the technical scheme, the locking piece is a locking screw rod, the locking screw rod is vertically arranged, the locking screw rod is connected with the fixed support, and the bottom end of the locking screw rod is clamped with the sliding rod. Set up the screw on the fixed bolster, screw locking screw into the screw to carry out the joint to the slide bar, not only can play powerful blocking effect, can guarantee stronger joint strength between locking screw and the fixed bolster moreover, prevent locking screw and the fixed bolster separation when rocking chair or wheelchair state use.
As a further improvement of the technical scheme, the connecting pieces are respectively arranged on the left side and the right side of the supporting rod, and the two connecting pieces are respectively connected with the two ends of the sliding rod. The two connecting pieces are arranged, so that the acting force of a single connecting piece can be effectively reduced, and the stability and safety of the folding mechanism are improved.
As a further improvement of the above technical solution, the control switch is a button, and the control switch is provided on the left side or the right side of the seat frame. The push button is designed and arranged on the left side or the right side of the seat frame, so that a user can conveniently control the gas spring to work through the push button, and the wheelchair and the rocking chair can be switched between two states at will.
As a further improvement of the above technical solution, the hinge joint of the gas spring and the backrest frame is provided at the front side of the hinge joint of the first connecting rod and the backrest frame. The connecting part of the gas spring and the backrest frame is arranged at the front side of the connecting part of the first connecting rod and the backrest frame, so that the telescopic distance of the gas spring can be shortened, on one hand, the back of a user can be strongly supported, and on the other hand, the service life of the gas spring can be greatly prolonged.
The multifunctional wheelchair has the beneficial effects that the multifunctional wheelchair is novel in design, stable and reliable in structure, very simple and convenient to use, and aims to facilitate the elder and the disabled with inconvenient actions to independently finish the conversion between the wheelchair and the rocking chair, and the problem of unstable gravity center when the wheelchair is sat on the wheelchair to convert the wheelchair and the rocking chair is well solved.
Drawings
The invention is further described below with reference to the drawings and examples;
FIG. 1 is a perspective view of a multifunctional wheelchair according to an embodiment of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a left side view showing the construction of the multifunctional wheelchair according to the present invention in a state in which the driving wheels are omitted;
FIG. 4 is a left side view of the folding mechanism in the wheelchair according to the present invention;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a cross-sectional view of section A-A of FIG. 5;
FIG. 7 is a left side view of the folding mechanism in a rocking chair configuration in the wheelchair of the present invention;
FIG. 8 is a top view of FIG. 7;
FIG. 9 is a cross-sectional view of section B-B of FIG. 8;
FIG. 10 is a schematic view of a folding structure of another embodiment of the multifunctional wheelchair according to the present invention;
fig. 11 is a structural perspective view of a fixing bracket in the multifunctional wheelchair provided by the invention.
The drawing comprises 110 parts of backrest cushion, 120 parts of driving wheel, 130 parts of front wheel, 140 parts of cushion, 150 parts of seat frame, 160 parts of backrest frame, 200 parts of arc rocking bar, 300 parts of first connecting rod, 400 parts of second connecting rod, 500 parts of folding mechanism, 510 parts of connecting piece, 520 parts of sliding rod, 530 parts of locking piece, 540 parts of fixing bracket, 541 parts of groove, 542 parts of mounting hole, 550 parts of limiting hole, 560 parts of supporting rod, 570 parts of locking screw rod, 600 parts of gas spring.
Detailed Description
Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, if there is a word description such as "a plurality" or the like, the meaning of a plurality is one or more, and the meaning of a plurality is two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of first, second, and third is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 11, several embodiments of the multifunctional wheelchair of the present invention are illustrated below.
As shown in fig. 1 to 3, an embodiment of the present invention provides a multifunctional wheelchair including a wheelchair body including a seat frame 150, a back frame 160, a front wheel 130, a first link 300, an arc-shaped rocker 200, a second link 400, a gas spring 600, and a folding mechanism 500.
Wherein, the seat frame 150 may be formed by connecting a plurality of metal rods such as lean tubes. The seat frame 150 is provided with a seat cushion 140 to support the buttocks of the user.
The bottom end of the backrest 160 is hinged to the seat frame 150, so that the backrest 160 can rotate around the joint of the backrest and the seat frame 150, thereby facilitating the conversion between the rocking chair and the wheelchair. The back rest 160 is provided with a back rest 110 to support the back of the user. The back rest 160 may be formed by connecting a plurality of metal rods such as lean tubes.
The front wheels 130 are disposed below the seat frame 150, and the front wheels 130 are respectively disposed on the left side and the right side of the seat frame 150, and when the wheelchair is in a wheelchair state, the front wheels 130 are in contact with the ground, so that the wheelchair body can be supported better, and the wheelchair body can be stably moved under the action of the driving wheels 120.
The first link 300 is respectively disposed at the left side and the right side of the back rest 160, the top end of the first link 300 is hinged to the back rest 160, and the first link 300 can swing forward or backward with respect to the back rest 160. The first link 300 may be a straight tube, and the cross-sectional shape thereof may be a circle.
The rear end of the arc-shaped rocker 200 is hinged to the bottom end of the first link 300, and the arc-shaped rocker 200 can swing forward or backward relative to the first link 300. The cross-sectional shape of the arc-shaped rocker 200 may be circular. As shown in fig. 3, the arc-shaped rocker 200 is concave and convex upward, and when the bottom surface of the arc-shaped rocker 200 contacts the ground, the arc-shaped rocker 200 can swing forward and backward relative to the bottom surface. More than one connecting rod is arranged between the two arc rocking bars 200 for fixing, so that the structural stability of the arc rocking bars 200 can be enhanced. Of course, a plurality of arc rockers 200 may be provided according to actual circumstances.
The second connecting rod 400 is respectively disposed at the left side and the right side of the seat frame 150, the top end of the second connecting rod 400 and the seat frame 150 may be connected by welding or a pipe connection, the second connecting rod 400 is fixed relative to the seat frame 150, the bottom end of the second connecting rod 400 is hinged to the front end of the arc rocker 200, and the arc rocker 200 may swing back and forth relative to the second connecting rod 400. The second link 400 may be a straight tube, and the cross-sectional shape thereof may be a circle.
The first connecting rod 300 is arranged between the backrest frame 160 and the arc rocking rod 200 for connection, and the second connecting rod 400 is arranged between the seat frame 150 and the arc rocking rod 200 for connection, so that the back and forth swinging of the backrest frame 160 can drive the arc rocking rod 200 to change in two positions of landing and leaving the ground, and the rocking chair and wheelchair can be switched.
The top end (i.e., the telescopic end) of the gas spring 600 is hinged to the backrest frame 160, and the bottom end (i.e., the cylinder end) of the gas spring 600 is hinged to the seat frame 150, so that the backrest frame 160 can be driven to swing forward or backward when the telescopic end of the gas spring 600 extends or retracts, thereby completing the transition between the wheelchair and the rocking chair.
Preferably, the hinge between the gas spring 600 and the backrest 160 is disposed at the front side of the hinge between the first link 300 and the backrest 160, so that the telescopic distance of the gas spring 600 can be shortened, on the one hand, the back of the user can be strongly supported, and on the other hand, the telescopic end of the gas spring 600 can be prevented from being excessively stretched and easily broken, thereby greatly prolonging the service life of the gas spring 600.
The gas spring 600 may be a controllable gas spring. The gas spring 600 includes a control switch for controlling the operation of the gas spring 600. The control switch may be a handle, button or the like. The control switch is provided on the left or right side of the seat frame 150. In this embodiment, a button design is adopted and is disposed at the left side or the right side of the seat frame 150, so that a user can conveniently control the operation of the gas spring 600 through the button, thereby performing any switching between the wheelchair and the rocking chair.
The user leans on the back rest 160, and operates the control switch such as a button, presses the button, can drive the back rest 160 to slowly swing backwards under the action of the gas spring 600, and then drives the arc rocker 200 to swing downwards until the arc rocker 200 reaches the ground, at this time, the arc rocker 200 is just tangential with the outer circle of the driving wheel 120, and then the button is released, the gas spring 600 can be self-locked, so that the arc rocker 200 and the back rest 160 are stably fixed, and the wheelchair state is converted into the rocking chair state.
Then, when the back of the user leans forward slightly, the button of the air spring 600 is pressed without applying excessive pressure to the back rest 160, and at this time, the acting force of the air spring 600 is greater than the pressure of the back to the back rest 160, so that the telescopic end of the air spring 600 automatically stretches and drives the back rest 160 to swing forward, and simultaneously drives the rear end of the arc rocker 200 to swing upward, leave the ground and switch to a wheelchair state, and at this time, the driving wheel 120 and the front wheel 130 land, thereby providing a guarantee for the stability of the wheelchair body.
The arrangement of the air spring 600 can effectively support the backrest frame 160, and adjust the inclination angle of the backrest frame 160 through the telescopic action of the air spring 600 so as to improve the comfort of a user, and when the user leans against the backrest cushion 110, the air spring 600 controls the arc rocking rod 200 to slowly swing down, and after leaving the backrest cushion 110, the air spring 600 controls the arc rocking rod 200 to slowly swing up, and the air spring 600 is adopted, so that the problem that the gravity center is unstable when the wheelchair and the rocking chair are converted when the wheelchair is sitting on the wheelchair can be effectively solved.
As shown in fig. 1, 4 to 11, the folding mechanism 500 is connected to the front wheel 130 and the seat frame 150, respectively, for driving the front wheel 130 to swing. When the wheelchair is in the rocking chair state, the folding mechanism 500 drives the front wheels 130 to swing backwards and leave the ground, so that the front wheels 130 are prevented from obstructing the wheelchair in the rocking chair state. When the wheelchair is switched to the wheelchair state, the folding mechanism 500 drives the front wheels 130 to swing forward to reach the ground, so as to effectively support the wheelchair body.
Specifically, the folding mechanism 500 includes a fixed bracket 540, a support bar 560, a slide bar 520, a connecting member 510, and a locking member.
The fixing support 540 is horizontally arranged, the fixing support 540 is respectively arranged on the left side and the right side of the seat frame 150, the fixing support 540 is connected with the seat frame 150 through screws, and the fixing support 540 is positioned below the seat cushion 140. The fixing bracket 540 is provided with a limiting hole 550, and two ends of the limiting hole 550 are arranged front and back. The desired limiting aperture 550 may be a kidney-shaped aperture. The fixing bracket 540 may be made of a metal material.
The bottom end of the supporting rod 560 is connected with the front wheel 130, the top end of the supporting rod 560 is hinged with the fixing bracket 540, and the supporting rod 560 can swing back and forth around the hinge position of the supporting rod 560 and the fixing bracket 540. In this embodiment, the support bar 560 is hinged to the front end of the fixing bracket 540. The support bar 560 may be made of a metal material.
The sliding rod 520 is horizontally disposed in the left-right direction, and the sliding rod 520 is disposed in the limiting hole 550 and is movable back and forth along the length direction of the limiting hole 550. In this embodiment, the cross-sectional shape of the sliding rod 520 is circular, and the sliding rod 520 is adapted to the limiting hole 550. The sliding rod 520 may be made of a metal material.
One end of the connecting member 510 is hinged to the supporting rod 560, and the other end of the connecting member 510 is connected to the sliding rod 520 by welding or screw connection. In this embodiment, the connecting members 510 are respectively disposed on the left and right sides of the support rod 560, and two connecting members 510 are respectively connected to two ends of the sliding rod 520. The connection member 510 may be made of a metal material.
When the slide rod 520 moves forward along the limit hole 550, the link 510 moves with the forward movement of the slide rod 520, and the link 510 drives the support rod 560 to swing forward, and when the slide rod 520 moves forward, the support rod 560 swings in place, and the front wheel 130 reaches the ground.
When the sliding rod 520 moves backward along the limiting hole 550, the connecting piece 510 moves along with the backward movement of the sliding rod 520, and the connecting piece 510 drives the supporting rod 560 to swing backward, so that the front wheel 130 is folded and stored, and the front wheel 130 is separated from the ground.
The locking member is connected to the fixing bracket 540, and the locking member is clamped with the sliding rod 520. Through the setting of locking piece, carry out the joint to slide bar 520, make slide bar 520 unable back removal to ensure that front wheel 130 can stably powerfully support whole wheelchair body. Moreover, when the front wheel 130 is in the folded state, the locking member can block the sliding rod 520, so as to prevent the sliding rod 520 from moving forward and causing the front wheel 130 to fall to the ground.
Specifically, as shown in fig. 4, 6, 7, 9 and 11, the locking member is a locking block 530. The locking piece 530 may be made of a metal material. The locking block 530 is provided with a hinge shaft horizontally arranged left and right, and the hinge shaft is connected with the fixing bracket 540. The fixing bracket 540 is provided with a mounting hole 542, and the hinge shaft is mounted to the mounting hole 542. And, the hinge shaft is positioned below the limiting hole 550.
The long end of the locking piece 530 is provided with an arc end surface, the arc end surface is semicircular, and the axial direction of the arc end surface is horizontal left and right. The long end of the locking piece 530 is engaged with the sliding rod 520, and the long end of the locking piece 530 abuts against the fixing bracket 540. The short end of the locking piece 530 may abut against the fixing bracket 540.
When the front wheel 130 is landed, the sliding rod 520 is moved forward to a proper position, and then the arc end surface of the long end of the locking piece 530 is contacted with the circumferential surface of the sliding rod 520, and at the moment, the long end of the locking piece 530 is positioned above the sliding rod 520, so that the sliding rod 520 is clamped with the locking piece 530, and the front wheel 130 can be ensured to have a stable and powerful supporting effect, as shown in fig. 6.
Because the arc end surface and the cross section of the sliding rod 520 are circular, the short end of the locking piece 530 is acted by an upward force, so that the long end of the locking piece 530 overcomes the friction between the locking piece and the sliding rod 520 and swings down until the locking piece is positioned below the sliding rod 520, thereby releasing the blocking effect of the locking piece 530 on the sliding rod 520, facilitating the sliding rod 520 to move to the rear side of the limiting hole 550, and folding the front wheel 130. Moreover, because the long end of the locking piece 530 is heavier than the short end thereof, the locking piece 530 swings up under the action of gravity until the locking piece abuts against the fixed bracket 540, and cannot swing continuously, and the short end of the locking piece 530 abuts against the fixed bracket 540, so that the short end of the locking piece 530 blocks the sliding rod 520, and the blocking influence caused by downward swinging of the front wheel 130 in the rocking chair state is avoided, as shown in fig. 9.
Of course, a torsion spring may be disposed on the hinge shaft, and by the arrangement of the torsion spring, the long end of the locking block 530 may be driven to always abut against the fixing bracket 540. When the front wheel 130 in the folded state is restored to the normal use state, the user only swings the support rod 560 forward, so that the sliding rod 520 moves forward in the limiting hole 550, the sliding rod 520 applies a downward force to the long end of the locking piece 530, so that the sliding rod 520 moves forward in place, and then the long end of the locking piece 530 resets, and a blocking effect is applied to the sliding rod 520.
As shown in fig. 11, in the present embodiment, the fixing bracket 540 is provided with a groove 541 with a downward opening, the limiting holes 550 are respectively disposed on the left side and the right side of the groove 541, and the locking block 530 is disposed in the groove 541. The arrangement of the grooves 541 is beneficial to enhancing the connection strength of the sliding rod 520 and the fixed bracket 540, and also enhancing the connection strength of the locking piece 530 and the fixed bracket 540, so that the locking piece 530 is enabled to bear a larger acting force from the sliding rod 520 for a long time, and the service life of the folding mechanism 500 is prolonged.
In some embodiments, as shown in fig. 10, the locking member is a locking screw 570. The locking screw 570 is vertically arranged, the locking screw 570 is connected with the fixing support 540, and specifically, the fixing support 540 is provided with a screw hole, the locking screw 570 is screwed into the screw hole from top to bottom, and the bottom end of the locking screw 570 can be promoted to be clamped with the sliding rod 520. By screwing in or out the lock screw 570, the locking relationship of the lock screw 570 with the slide rod 520 can be established or the blocking effect of the lock screw 570 on the slide rod 520 can be released.
By adopting the design, the locking screw 570 not only can play a powerful blocking role, but also can ensure stronger connection strength between the locking screw 570 and the fixed support, and the locking screw is prevented from being separated from the fixed support when the rocking chair or the wheelchair is used.
In some embodiments, the locking member is a blocking lever. The blocking rod is vertically arranged, a step hole is formed in the top of the fixing support 540, the blocking rod is arranged in the step hole, and the bottom end of the blocking rod is clamped with the sliding rod 520.
The fixed support 540 is provided with the step hole, the blocking rod is inserted into the step hole from top to bottom, the sliding rod 520 can be blocked after the blocking rod moves downwards in place, and when the blocking effect of the blocking rod on the sliding rod 520 needs to be relieved, the blocking rod only needs to be lifted upwards, so that the operation of the old and the disabled is very convenient.
The multifunctional wheelchair provided by the invention is a novel wheelchair product combining the rocking chair and the wheelchair, so that a user can finish the conversion between the rocking chair and the wheelchair without the help of other people, the multifunctional wheelchair is convenient for the old living alone to use, the burden of the child for the old is relieved to a great extent, the old can be helped to realize life self-care to a great extent, and the life happiness is improved. And the whole wheelchair is stable and solid in structure and convenient to operate, and can bring a new experience to people.
While the preferred embodiment of the present application has been described in detail, the application is not limited to the embodiments, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the application, and these modifications and substitutions are intended to be included in the scope of the present application as defined in the appended claims.
Claims (4)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011387414.6A CN112587326B (en) | 2020-12-02 | 2020-12-02 | A multifunctional wheelchair |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011387414.6A CN112587326B (en) | 2020-12-02 | 2020-12-02 | A multifunctional wheelchair |
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| CN112587326A CN112587326A (en) | 2021-04-02 |
| CN112587326B true CN112587326B (en) | 2025-02-18 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN215385305U (en) * | 2020-12-02 | 2022-01-04 | 汕头大学 | a multifunctional wheelchair |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0421001A1 (en) * | 1989-10-02 | 1991-04-10 | Lucien Couture | Rocker attachment for a wheelchair |
| US8104121B2 (en) * | 2006-02-01 | 2012-01-31 | Ferno-Washington, Inc. | Combination ambulance cot and chair |
| KR100967989B1 (en) * | 2008-01-16 | 2010-07-07 | 연세대학교 산학협력단 | Convertible wheelchair |
| CN103462406A (en) * | 2013-09-16 | 2013-12-25 | 东莞市虎门江峰五金店 | Multifunctional chair |
| CN203693927U (en) * | 2013-12-31 | 2014-07-09 | 钟臻辉 | Wheelchair seat |
| CN107137183B (en) * | 2017-07-10 | 2018-08-24 | 张建伟 | A kind of multifunction nursing seat |
| CN209203804U (en) * | 2018-01-23 | 2019-08-06 | 康宁商业管理(南通)有限公司 | Multifunctional wheelchair |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN215385305U (en) * | 2020-12-02 | 2022-01-04 | 汕头大学 | a multifunctional wheelchair |
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