CN116785084A - Wheelchair of integrative linkage regulation - Google Patents
Wheelchair of integrative linkage regulation Download PDFInfo
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- CN116785084A CN116785084A CN202310764569.4A CN202310764569A CN116785084A CN 116785084 A CN116785084 A CN 116785084A CN 202310764569 A CN202310764569 A CN 202310764569A CN 116785084 A CN116785084 A CN 116785084A
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- 238000013016 damping Methods 0.000 claims description 36
- 238000009434 installation Methods 0.000 claims description 8
- 239000004579 marble Substances 0.000 claims description 7
- 235000004443 Ricinus communis Nutrition 0.000 claims description 5
- 230000035939 shock Effects 0.000 claims description 3
- 244000309466 calf Species 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000036544 posture Effects 0.000 description 39
- 230000008859 change Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000017531 blood circulation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000000276 sedentary effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 210000001835 viscera Anatomy 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
- A61G5/0866—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
- A61G5/0808—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
-
- 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)
- Rehabilitation Tools (AREA)
Abstract
A wheelchair with integral linkage adjustment comprises a backrest bracket, a seat frame, a wheel frame, a pedal frame and a linkage assembly; the linkage assembly comprises a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod; the wheel frame is provided with a first rotating seat; the seat frame is rotationally connected with the first rotating seat through a connecting shaft; the wheel frame is hinged with the first connecting rod, and the backrest bracket is fixedly connected with the other end of the first connecting rod; the seat frame is fixedly connected with the backrest bracket; the pedal frame is rotatably arranged on the second rotating seat, the third connecting rod is hinged with the wheel frame, and the third connecting rod is hinged with the second connecting rod; the fourth connecting rod is fixedly connected with the pedal frame, and the other end of the fourth connecting rod is hinged with the front end of the second connecting rod. The backrest bracket is rotated to drive the seat frame and the pedal frame to rotate simultaneously through the push-pull armrest handles, so that the wheelchair can be changed from sitting to lying, the adjusting process of the wheelchair is reduced, the adjusting time of the wheelchair is shortened, and the adjusting efficiency of the wheelchair is improved.
Description
Technical Field
The application relates to the technical field of wheelchairs, in particular to an integrally linkage-adjusted wheelchair.
Background
The wheelchair is an important moving tool which is provided with wheels and can help to replace walking, is used for wounded and patients to recover at home, transport in turnover, visit and go out, not only meets the requirement of mobility-impaired people for riding instead of walking, but also is convenient for family members to move and care the patients, so that the patients can exercise and participate in social activities by means of the wheelchair.
In the prior art, in order to change the posture of a wheelchair user and avoid sedentary sitting, an adjusting mechanism is arranged in the wheelchair, and the inclination angle of the backrest and the pedal frame is adjusted through the adjusting mechanism, so that the user can change the posture from a sitting posture to a lying posture, and the user can change the posture and avoid sedentary sitting. However, in the existing wheelchair, the backrest and the pedals are separately adjusted, for example, the angle of the backrest is adjusted first, and then the angle of the pedal frame is adjusted, so that the adjustment efficiency of the posture of the wheelchair is low.
Disclosure of Invention
Aiming at the problems of the background technology, the application aims to provide an integrally linked and adjusted wheelchair, which solves the problem of low posture adjustment efficiency of the existing wheelchair.
To achieve the purpose, the application adopts the following technical scheme:
a wheelchair with integral linkage adjustment comprises a backrest bracket, a seat frame, a wheel frame, a pedal frame and a linkage assembly; the linkage assembly comprises a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod; the top of the wheel frame is provided with a first rotating seat; the top of the backrest bracket is provided with a handrail grab handle which is bilaterally symmetrical; the left and right sides of the seat frame are respectively provided with the wheel frames, and the seat frame is connected with the first rotating seat through the connecting shaft, so that the seat frame can rotate around the first rotating seat between the wheel frames at the left and right sides; the rear end of the wheel frame at each side is hinged with one end of the first connecting rod, and the bottom end of the backrest bracket is fixedly connected with the other end of the first connecting rod; the rear end of the seat frame is fixedly connected with the bottom end of the backrest bracket; the front end of the seat frame is provided with a second rotating seat and a rotatable second connecting rod; the top of the pedal frame is rotatably arranged at the bottom end part of the third connecting rod of the second rotating seat and hinged with the front end of the wheel frame, and the top end of the third connecting rod is hinged with the rear end of the second connecting rod; one end of the fourth connecting rod is fixedly connected with the top of the pedal frame, and the other end of the fourth connecting rod is hinged with the front end of the second connecting rod.
More preferably, the steering wheel further comprises a rotation locking assembly comprising a damping gas spring and a first hand grip; the fixed end of the damping gas spring is fixed on the rear side of the seat frame, and the driving end of the damping gas spring is hinged on the rear side of the wheel frame; the first hand grip is sleeved on the armrest grab handle and is connected with the switch valve of the damping gas spring through a stay wire structure.
Further, the back rest comprises two armrest frames and a hinged rod assembly, wherein the rear sides of the two armrest frames are respectively and rotatably connected with the left side and the right side of the backrest bracket; one end of the hinging rod assembly is fixedly connected with the front end of the armrest frame, and the other end of the hinging rod assembly is hinged with the top of the seat frame.
Specifically, the hinge rod assembly comprises a fixed hinge rod and a hinge sleeve rod; the bottom of the hinged loop bar is rotationally connected with the seat frame, the top of the hinged loop bar is provided with a clamping cavity, and the outside of the hinged loop bar is provided with a clamping hole communicated with the clamping cavity; the top of the fixed hinging rod is fixedly connected with the front end of the armrest frame, and a ball is arranged on the bottom rod body of the fixed hinging rod; the bottom of the fixed hinging rod is sleeved in the clamping cavity, so that the marble is clamped in the clamping hole.
More preferably, the folding handrail frame further comprises a folding handrail frame, wherein the folding handrail frame comprises a first folding handle, a second folding handle, a first hinging seat, a second hinging seat and a fixing pin; the hinged end of the first folding handle and the hinged end of the second folding handle are respectively hinged with the two handrail handles, and the folding end of the first folding handle and the folding end of the second folding handle respectively extend towards the symmetrical line between the two handrail handles; the first hinge seat is arranged at the folding end of the first folding handle, the first hinge seat is provided with an L-shaped similar hinge groove, and the bottom of the hinge groove is provided with a through first locking hole; the top of the first hinging seat is provided with a first rotating hole communicated with the hinging groove; the second hinge seat is arranged at the folding end of the second folding handle, the top of the second hinge seat is provided with a rotating part, and the rotating part is provided with a second rotating hole; the second hinge seat is provided with a second vertically-through locking hole; the first rotating hole and the second rotating hole are sequentially connected through a rotating shaft, so that the second hinge seat is hinged in the hinge groove, and the second hinge seat can rotate around the axis of the second rotating hole; the fixing pin detachably connects the second locking hole and the first locking hole.
Further, the folding handrail frame further comprises a folding pressing piece; the top of the folding pressing piece is provided with an installation clamping groove, and the bottom of the installation clamping groove is provided with a through third locking hole; one end of the folding pressing piece is provided with a pressing plate, one end of the pressing plate is connected with the folding pressing piece, and the other end of the pressing plate is outwards far away from the folding pressing piece and is bent upwards; the top of the fixed pin is provided with a clamping round table, and the diameter of the clamping round table is larger than that of the third locking hole; the bottom of the fixed pin sequentially passes through the installation clamping groove, the third locking hole, the second locking hole and the first locking hole, so that the folding pressing piece is clamped at the top of the first hinging seat.
In particular, the wheel frame comprises casters and a shock absorbing assembly; the damping component comprises a damping spring and a connecting column; the top of the connecting column is fixedly arranged on the front side of the bottom of the wheel frame; the universal castor is fixed at the bottom of the connecting column; the damping spring is sleeved outside the connecting column, the top of the damping spring is fixedly connected with the connecting seat, and the bottom of the damping spring is propped against the top of the universal castor.
More preferably, the brake assembly further comprises a brake assembly, wherein the brake assembly comprises a first brake handle, a second brake handle and a brake piece; the first brake handle is arranged on the two handrail handles, the second brake handle is arranged on the wheel frame, and the first brake handle and the second brake handle are respectively in driving connection with the brake piece through pipelines.
Specifically, the pedal frame comprises two swinging rods, two telescopic rods, two shank pads and two foot supports; the top ends of the two swinging rods are respectively hinged with the second rotating seat, and the bottom ends of the two swinging rods are respectively hinged with the top ends of the two telescopic rods; the two footrests are respectively arranged at the bottom ends of the telescopic rods; the two shank pads are respectively assembled with the middle parts of the two swinging rods.
Specifically, the angle range of the included angle A between the supporting surface of the backrest bracket and the horizontal plane is 107-137 degrees; the angle range of the included angle B between the supporting surface of the seat frame and the horizontal plane is 10-15 degrees; the angle range of the included angle C between the supporting surface of the armrest frame and the horizontal plane is 10-15 degrees; the angle range of the included angle D between the supporting surface of the pedal frame and the horizontal plane is 111-141 degrees.
Compared with the prior art, one of the technical schemes has the following beneficial effects:
according to the wheelchair disclosed by the application, medical staff can drive the seat frame and the pedal frame to rotate simultaneously by pushing and pulling the armrest handles, and only one-time adjustment is needed, so that the wheelchair can be changed from a sitting posture to a lying posture or from the lying posture to the sitting posture, the adjustment process of the wheelchair is reduced, the adjustment time of the wheelchair is shortened, and the adjustment efficiency of the wheelchair is improved.
Drawings
FIG. 1 is a schematic view of a wheelchair according to an embodiment of the present application;
FIG. 2 is another perspective structural schematic view of a wheelchair according to an embodiment of the present application;
FIG. 3 is a schematic illustration of the connection between the back rest support, seat frame and wheelchair frame in accordance with one embodiment of the present application;
FIG. 4 is a schematic view of the structure of a hinge rod assembly according to one embodiment of the present application;
FIG. 5 is a schematic view of the structure of a folding handrail frame according to an embodiment of the present application;
FIG. 6 is a schematic view of the structure of a pedal frame according to one embodiment of the present application;
FIG. 7 is a schematic diagram of the sitting configuration of a wheelchair according to an embodiment of the present application;
figure 8 is a schematic structural view of a zero gravity posture of a wheelchair according to an embodiment of the present application.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.
Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include one or more such feature.
In a preferred embodiment of the application, as shown in fig. 1 to 8, an integrally linked and adjusted wheelchair comprises a backrest bracket 1, a seat frame 2, a wheel frame 3, a pedal frame 4 and a linkage assembly; the linkage assembly comprises a first connecting rod 51, a second connecting rod 52, a third connecting rod 53 and a fourth connecting rod 54; the top of the wheel frame 3 is provided with a first rotating seat 31; the top of the backrest bracket 1 is provided with a handrail grab handle 11 which is bilaterally symmetrical; the left and right sides of the seat frame 2 are respectively provided with the wheel frames 3, and the seat frame 2 is connected with a first rotating seat 31 through the connecting shaft, so that the seat frame 2 can rotate around the first rotating seat 31 between the wheel frames 3 on the left and right sides; the rear end of the wheel frame 3 at each side is hinged with one end of the first connecting rod 51, and the bottom end of the backrest bracket 1 is fixedly connected with the other end of the first connecting rod 51; the rear end of the seat frame 2 is fixedly connected with the bottom end of the backrest bracket 1; the front end of the seat frame 2 is provided with a second rotating seat 21 and a rotatable second connecting rod 52; the top of the pedal frame 4 is rotatably mounted on the second rotating seat 21, the bottom end of the third connecting rod 53 is hinged with the front end of the wheel frame 3, and the top end of the third connecting rod 53 is hinged with the rear end of the second connecting rod 52; one end of the fourth connecting rod 54 is fixedly connected with the top of the pedal frame 4, and the other end of the fourth connecting rod 54 is hinged with the front end of the second connecting rod 52.
In this embodiment, when the wheelchair is required to be changed from a sitting posture to a lying posture, a medical staff may hold the armrest grip 11 and then pull the back support 1 downward, so that the back support 1 may rotate counterclockwise through the first connecting rod 51, thereby tilting the back support 1 backward. Further, since the rear side of the seat frame 2 is fixedly connected to the bottom of the back support 1, the back support 1 gives a pulling force to the seat frame 2 backward and downward when the back support 1 rotates counterclockwise; and the whole seat frame 2 can rotate anticlockwise around the first rotating seat 31 after the seat frame 2 is pulled by the backrest bracket 1. Further, when the seat frame 2 rotates counterclockwise, the seat frame 2 may rotate the third connecting rod 53 clockwise through the second connecting rod 52, so that the clockwise rotation of the third connecting rod 53 also pulls the second connecting rod 52 to rotate counterclockwise. The counterclockwise rotation of the second connecting rod 52 pulls the fourth connecting rod 54 to rotate clockwise, so that the fourth connecting rod 54 pulls the pedal frame 4 to rotate counterclockwise around the second rotating seat 21, and the bottom of the pedal frame 4 winds upwards, so that the wheelchair is converted from a sitting posture to a lying posture.
Similarly, when changing from lying to sitting, the healthcare worker pulls the armrest grip 11 upward, so that the back rest 1 rotates clockwise, so that the back rest 1 gives an upward pulling force to the rear end of the seat frame 2, so that the seat frame 2 rotates clockwise about the first rotating seat 31. When the seat frame 2 rotates clockwise, the second connecting rod 52 can drive the third connecting rod 53 to rotate anticlockwise, so that anticlockwise rotation of the third connecting rod 53 also pulls the second connecting rod 52 to rotate clockwise. The clockwise rotation of the second connecting rod 52 may pull the fourth connecting rod 54 to rotate counterclockwise, so that the fourth connecting rod 54 pulls the pedal frame 4 clockwise around the second rotating seat 21, and the bottom of the pedal frame 4 rotates downward, so as to realize the transition of the wheelchair from lying posture to sitting posture.
Therefore, the medical staff can drive the seat frame 2 and the pedal frame 4 to rotate simultaneously by pushing and pulling the armrest grab handle 11, and only one-time adjustment is needed, so that the wheelchair can be changed from a sitting posture to a lying posture or from the lying posture to the sitting posture, the adjustment process of the wheelchair is reduced, the adjustment time of the wheelchair is shortened, and the adjustment efficiency of the wheelchair is improved.
More preferably, a rotational locking assembly is also included, the rotational locking assembly including a damping gas spring 71 and a first hand grip 72; the fixed end of the damping gas spring 71 is fixed on the rear side of the seat frame 2, and the driving end of the damping gas spring 71 is hinged on the rear side of the wheel frame 3; the first hand grip 72 is sleeved on the armrest grip 11, and the first hand grip 72 is connected with the switch valve of the damping gas spring 71 through a pull wire structure.
In this embodiment, the pull wire structure between the first handle 72 and the switch valve is a prior art. Therefore, when the posture of the wheelchair needs to be changed, the medical staff can open the on-off valve of the damping gas spring 71 by holding the first hand grip 72, so that the driving end of the damping gas spring 71 can be extended and contracted. After the first hand grip 72 is held, the armrest grip 11 is pulled, so that the backrest bracket 1 can rotate to drive the seat frame 2 and the pedal frame 4 to rotate, and the wheelchair can be switched between a sitting posture and a lying posture. When the posture is changed, the first handle grip 72 is released, and the on-off valve of the damper gas spring 71 is closed, the driving end of the damper gas spring 71 is locked and cannot move in a telescopic manner, so that the seat frame 2 cannot rotate around the first rotating seat 31. Therefore, when the user pushes and pulls the armrest grip 11 while leaning against the back support 1 or the medical staff, the seat frame 2 is locked by the damping gas spring 71 and cannot rotate, so the back support 1 fixedly connected to the seat frame 2 cannot rotate, thereby locking the inclination angle of the back support 1. Similarly, the seat frame 2 is locked by the damping gas spring 71, and the second connecting rod 52 is also locked to rotate, so that the seat frame 2 can tighten the fourth connecting rod 54 through the second connecting rod 52, thereby tightening the pedal frame 4, and preventing the pedal frame 4 from rotating. Therefore, when the wheelchair posture is changed, the first hand grip 72 is held, so that the damping gas spring 71 unlocks the fixation of the seat frame 2, and the seat frame 2 and the pedal frame 4 are driven to rotate by pulling the backrest bracket 1, thereby changing the posture. After the posture change is completed, the seat frame 2 is locked by the damping gas spring 71, and the rotation of the back rest bracket 1 and the pedal frame 4 is prevented, thereby locking the adjusted posture of the wheelchair. More preferably, the damping gas spring 71 is used for locking the rotation of the seat frame 2, and reducing the buffer when the backrest bracket 1 rotates anticlockwise, so as to ensure the stable adjustment of the wheelchair; and when the lying posture is changed into the sitting posture, after the switch valve of the damping gas spring 71 is opened, the backrest bracket 1 can be supported to rotate clockwise under the elastic action of the damping gas spring 71, so that hospital personnel can easily push the backrest bracket 1, and the labor intensity of medical personnel is reduced.
Further, the back rest also comprises two armrest frames 6 and a hinged rod assembly 60, wherein the rear sides of the two armrest frames 6 are respectively and rotatably connected with the left side and the right side of the backrest bracket 1; one end of the hinge rod assembly 60 is fixedly connected with the front end of the armrest frame 6, and the other end of the hinge rod assembly 60 is hinged with the top of the seat frame 2.
In order to make the hands of a user put comfortably, a hand guard frame is generally arranged on the wheelchair. However, when the wheelchair is adjusted in a lying posture, the existing hand guard frame is fixed, so that after the wheelchair is adjusted in the lying posture, a large included angle exists between the body of a user and the hand guard frame, and the hands are not convenient to use. Therefore, in this embodiment, the hand guard frame is rotatably connected with the backrest support 1, so that when the backrest support 1 rotates, the hand guard frame can be driven, and the front end of the hand guard frame is hinged with the seat frame 2 through the hinge rod assembly 60, so that when the hand guard frame is driven by the backrest support 1, the hand guard frame can follow the backrest support 1 to rotate in the same direction through the hinge rod assembly 60, thereby avoiding overlarge angle between the hand guard frame and the backrest seat and ensuring comfortable placement of hands of a user.
Specifically, the hinge rod assembly 60 includes a fixed hinge rod 61 and a hinge sleeve rod 62; the bottom of the hinged sleeve rod 62 is rotatably connected to the seat frame 2, a clamping cavity 621 is formed in the top of the hinged sleeve rod 62, and a clamping hole 622 communicated with the clamping cavity 621 is formed in the outer portion of the hinged sleeve rod 62; the top of the fixed hinging rod 61 is fixedly connected with the front end of the armrest frame 6, and a bottom rod body of the fixed hinging rod 61 is provided with a marble 611; the bottom of the fixed hinge rod 61 is sleeved in the clamping cavity 621, so that the marble 611 is clamped in the clamping hole 622. The bottom end of the hinged sleeve rod 62 is hinged on the seat frame 2, and can swing under the action of external force. The top end of the fixed hinge rod 61 is fixedly connected with the hand guard frame, and the bottom end of the fixed hinge rod 61 is inserted into the clamping cavity 621, so that the hand guard frame is hinged with the seat frame 2, and the hand guard frame can rotate clockwise or anticlockwise. More preferably, the bottom of the fixed hinge rod 61 is further provided with a marble 611, so that the fixed hinge rod 61 can be firmly inserted into the clamping cavity 621 through the clamping action between the marble 611 and the clamping hole 622, and the disconnection of the fixed hinge rod 61 and the hinge sleeve rod 62 during the rotation of the hand guard frame can be avoided, so that the hinge between the hand guard frame and the seat frame 2 is ensured. When it is desired to hold the user of the wheelchair down from the side of the wheelchair, the marble 611 may be pressed and the fixed hinge rod 61 may be pulled out, which may lose the hinge of the fixed hinge rod 61 with the hinge sleeve rod 62, thereby losing the hinge of the hand guard with the seat frame 2. After the hinge between the fixed hinge rod 61 and the hinge sleeve rod 62 is disconnected, the hand guard frame is driven to rotate around the connection point between the hand guard frame and the backrest bracket 1, so that the hand guard frame is vertical, and a user can be held down from the side surface of the wheelchair conveniently.
More preferably, the folding handrail frame 8 further comprises a folding handrail frame 8, wherein the folding handrail frame 8 comprises a first folding handle 81, a second folding handle 82, a first hinging seat 83, a second hinging seat 84 and a fixing pin 85; the hinged end of the first folding handle 81 and the hinged end of the second folding handle 82 are respectively hinged with the two handrail handles 11, and the folded end of the first folding handle 81 and the folded end of the second folding handle 82 respectively extend towards the symmetry line between the two handrail handles 11; the first hinge seat 83 is mounted at the folding end of the first folding handle 81, the first hinge seat 83 is provided with an L-shaped hinge recess 831, and the bottom of the hinge recess 831 is provided with a first locking hole therethrough; a first rotation hole 832 communicating with the hinge recess 831 is formed at the top of the first hinge seat 83; the second hinge seat 84 is mounted at the folding end of the second folding handle 82, a rotating portion is provided at the top of the second hinge seat 84, and a second rotating hole 841 is provided in the rotating portion; the second hinge seat 84 is provided with a vertically penetrating second locking hole 842; the first rotation hole 832 and the second rotation hole 841 are sequentially connected through a rotation shaft, so that the second hinge seat 84 is hinged in the hinge recess 831, and the second hinge seat 84 can rotate around the axis of the second rotation hole 841; the fixing pin 85 detachably connects the second locking hole 842 and the first locking hole.
In this embodiment, the folding handrail frame 8 provides a gripping space for the push-wheel chair operator, so that the push-wheel chair operator can push and pull the nursing wheelchair better. The bottom of the seat frame 2 of the present embodiment is provided with an existing folding structure, and the backrest bracket 1 and the seat frame 2 can be symmetrically folded or unfolded by the folding structure. Therefore, in order to allow the folding handrail frame 8 to follow the seat frame 2 and the backrest frame 1 for folding, a first hinge seat 83 and a second hinge seat 84 are respectively disposed between the first folding handle 81 and the second folding handle 82, and the second hinge seat 84 is connected with the first rotation hole 832 of the first hinge seat 83 through a rotation shaft, so that the second hinge seat 84 can rotate in the hinge groove 831, and thus the first folding handle 81 and the second folding handle 82 can be close to each other or far from each other, so as to realize folding or unfolding of the folding handrail frame 8. Preferably, to lock and fix the opening of the folding handrail frame 8, the fixing pin 85 may be sequentially connected to the second locking hole 842 and the first locking hole, so that the second hinge seat 84 cannot rotate in the hinge recess 831, and thus the folding handrail frame 8 cannot be folded, thereby ensuring the opening of the folding handrail frame 8. When the folding handrail frame 8 needs to be folded, the second hinge seat 84 can rotate in the hinge recess 831 only by pulling out the fixing pin 85, so as to fold.
Specifically, the folding handrail frame 8 further includes a folding presser 86; the top of the folding pressing piece 86 is provided with an installation clamping groove 860, and the bottom of the installation clamping groove 860 is provided with a through third locking hole; one end of the folding pressing piece 86 is provided with a pressing plate 861, one end of the pressing plate 861 is connected with the folding pressing piece 86, and the other end of the pressing plate 861 is outwards far away from the folding pressing piece 86 and is bent upwards; the top of the fixed pin 85 is provided with a clamping round table 851, and the diameter of the clamping round table 851 is larger than that of the third locking hole; the bottom of the fixing pin 85 sequentially passes through the mounting slot 860, the third locking hole, the second locking hole 842 and the first locking hole, so that the folding pressing piece 86 is clamped at the top of the first hinge seat 83.
In this embodiment, in order to facilitate pulling out the fixing pin 85, the folding handrail frame 8 of this embodiment is further provided with a folding pressing member 86, a mounting slot 860 is provided at the top of the folding pressing member 86, and the mounting slot 860 is provided with a third locking hole therethrough. Therefore, when the folding handrail frame 8 is fixed, the bottom of the fixing pin 85 sequentially passes through the mounting slot 860, the third locking hole, the second locking hole 842 and the first locking hole, so that the second hinge seat 84 cannot be locked. The clamping round table 851 at the top of the fixing pin 85 is clamped in the mounting clamping groove 860, so that the fixing pin 85 is prevented from falling off from the mounting clamping groove 860, the third locking hole, the second locking hole 842 and the first locking hole, and the second hinge seat 84 loses the clamping connection of the fixing pin 85, so that the second hinge seat 84 can rotate in the hinge groove 831. When folding is needed, the pressing plate 861 of the folding pressing member 86 may be pressed downward, and the pressing plate 861 may be moved downward, so as to drive the whole folding pressing member 86 to tilt up at the top of the second hinge seat 84. The folding pressing piece 86 is tilted upwards, and can drive the fixing pin 85 to move upwards, so that the bottom rod body of the fixing pin 85 drops upwards from the first locking hole, and the second hinge seat 84 resumes rotation and can be folded.
Specifically, the wheel carrier 3 includes casters 32 and a shock absorbing assembly; the damping component comprises a mounting frame, a damping spring 34 and a connecting seat; the connecting seat is fixedly arranged on the front side of the bottom of the wheel frame 3, and a connecting column 33 is arranged at the bottom of the connecting seat; the damping spring 34 is sleeved outside the connecting column 33, and the top of the damping spring 34 is fixedly connected with the connecting seat; the top of the mounting frame is provided with a connecting hole, and the mounting frame is connected with the connecting column 33 through the connecting hole, so that the mounting frame is mounted at the bottom of the connecting seat, and the bottom of the damping spring 34 is propped against the top of the mounting frame; the castor 32 is mounted to the mounting frame.
In the embodiment, the universal wheelchair can realize universal steering, is suitable for small space use, and can provide more convenient functions for users. And a damping spring 34 is further arranged between the universal wheel and the wheel frame 3, so that vibration of the wheelchair can be reduced in the walking process, the bumpy feeling of a wheelchair user is reduced, and the comfort of the user is improved.
More preferably, the brake assembly comprises a first brake grip 91, a second brake handle 92 and a brake member 93; the first brake handle 91 is mounted on two of the armrest handles 11, the second brake handle 92 is mounted on the wheel frame 3, and the first brake handle 91 and the second brake handle are respectively in driving connection with the brake member 93 through pipelines. In this embodiment, the brake member 93 is a brake structure commonly used in a wheelchair, and the driving connection of the first brake lever 91 and the line between the second brake lever and the brake member 93 is also a braking function of the existing wheelchair. The first brake handle 91 is sleeved on the armrest handle 11, so that a medical staff can conveniently brake when pushing the wheelchair. The two brake handles are arranged on the wheelchair frame, so that a user can conveniently pull the wheelchair when sliding the wheelchair, and the wheelchair can be parked rapidly.
Specifically, the pedal frame 4 includes two swing levers 41, two telescopic levers 42, two shank pads 43 and two footrests 44; the top ends of the two swinging rods 41 are respectively hinged with the second rotating seat 21, and the bottom ends of the two swinging rods 41 are respectively hinged with the top ends of the two telescopic rods 42; two foot supports 44 are respectively installed at the bottom ends of the telescopic rods 42; the two shank pads 43 are respectively fitted to the middle portions of the two swing levers 41. The pedal frame 4 is hinged with the two second rotating seats 21 at the front end of the seat frame 2 through two swinging rods 41 respectively, so that the swinging rods 41 can rotate around the second swinging seats, and the inclination angle of the pedal frame 4 is adjusted. Further, a lower leg pad 43 is provided at the middle of the two swing levers 41, and the lower leg pad 43 can support the lower leg of the user, thereby enhancing the comfort of the user. Still further, the bottom of the swinging rod 41 is further provided with a foot rest 44 for supporting the foot of the user, and the foot rest 44 can be adjusted by the telescopic rod 42, so that the user with different heights can be satisfied.
Preferably, the angle range of the included angle A between the supporting surface of the backrest bracket and the horizontal plane is 107-137 degrees; the angle range of the included angle B between the supporting surface of the seat frame and the horizontal plane is 10-15 degrees; the angle range of the included angle C between the supporting surface of the armrest frame and the horizontal plane is 10-15 degrees; the angle range of the included angle D between the supporting surface of the pedal frame and the horizontal plane is 111-141 degrees. In this embodiment, the backrest support 1 may be pushed and pulled, so that the wheelchair may be switched between sitting and lying postures freely, avoiding that the user is in the same posture for a long time, but different users have different inclination angles for the lying postures. Therefore, the backrest bracket 1, the armrest frame 6, the seat frame 2 and the pedal frame 4 can be adjusted within a certain range, so as to meet the inclination angles of different lying postures. Further, when the backrest frame 1 of the wheelchair is set to 107 degrees, the inclination angles of the seat frame 2 and the armrest frame 6 are 10 degrees, and the inclination angle of the pedal frame 4 is 111 degrees, so that the wheelchair becomes a sitting posture slightly inclined backwards, the shoulder and the back of the user lean against the backrest frame 1 straightly, and the user can be prevented from sitting for a long time and leaning forward and bending. Further, after the backrest bracket 1 is completely pulled down, the backrest bracket 1 is at 137 degrees, the seat frame 2 and the armrest frame 6 are at 15 degrees, and the pedal frame 4 is at 141 degrees, so that a user is in a sitting position with zero gravity, and can feel comfortable when in weightlessness, the spine is in a natural relaxed state, the compression on the viscera of the body can be relieved, the blood circulation of legs is facilitated, the effect of four limbs relaxation is achieved, the blood circulation is increased, metabolism is promoted, and the fatigue of the lower limbs of a user sitting for a long time can be well relieved.
The technical principle of the present application is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the application and should not be taken in any way as limiting the scope of the application. Other embodiments of the application will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (10)
1. The wheelchair capable of being integrally adjusted in a linkage mode is characterized by comprising a backrest bracket, a seat frame, a wheel frame, a pedal frame and a linkage assembly;
the linkage assembly comprises a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod;
the top of the wheel frame is provided with a first rotating seat;
the top of the backrest bracket is provided with a handrail grab handle which is bilaterally symmetrical;
the left and right sides of the seat frame are respectively provided with the wheel frames, and the seat frame is movably connected with the first rotating seat through a connecting shaft, so that the seat frame can rotate around the connecting shaft between the wheel frames at the left and right sides;
the rear end of the wheel frame at each side is hinged with one end of the first connecting rod, and the bottom end of the backrest bracket is fixedly connected with the other end of the first connecting rod; the rear end of the seat frame is fixedly connected with the bottom end of the backrest bracket;
the front end of the seat frame is provided with a second rotating seat and a rotatable second connecting rod;
the top of the pedal frame is rotatably arranged on the second rotating seat;
the bottom end part of the third connecting rod is hinged with the front end of the wheel frame, and the top end of the third connecting rod is hinged with the rear end of the second connecting rod;
one end of the fourth connecting rod is fixedly connected with the top of the pedal frame, and the other end of the fourth connecting rod is hinged with the front end of the second connecting rod.
2. The integrally ganged-adjusted wheelchair of claim 1, further comprising a rotational lock assembly comprising a damped gas spring and a first hand grip;
the fixed end of the damping gas spring is fixed on the rear side of the seat frame, and the driving end of the damping gas spring is hinged on the rear side of the wheel frame;
the first hand grip is sleeved on the armrest grab handle and is connected with the switch valve of the damping gas spring through a stay wire structure.
3. The integrally ganged-adjusted wheelchair of claim 1, further comprising two armrest frames and a hinged lever assembly, the rear sides of the two armrest frames being rotatably connected to the left and right sides of the backrest frame, respectively;
one end of the hinging rod assembly is fixedly connected with the front end of the armrest frame, and the other end of the hinging rod assembly is hinged with the top of the seat frame.
4. A wheelchair in accordance with claim 3 wherein the hinge rod assembly comprises a fixed hinge rod and a hinge loop rod;
the bottom of the hinged loop bar is rotationally connected with the seat frame, the top of the hinged loop bar is provided with a clamping cavity, and the outside of the hinged loop bar is provided with a clamping hole communicated with the clamping cavity;
the top of the fixed hinging rod is fixedly connected with the front end of the armrest frame, and a ball is arranged on the bottom rod body of the fixed hinging rod;
the bottom of the fixed hinging rod is sleeved in the clamping cavity, so that the marble is clamped in the clamping hole.
5. The integrally ganged-adjusted wheelchair of claim 1, further comprising a folding armrest frame comprising a first folding handle, a second folding handle, a first hinge mount, a second hinge mount, and a securing pin;
the hinged end of the first folding handle and the hinged end of the second folding handle are respectively hinged with the two handrail handles, and the folding end of the first folding handle and the folding end of the second folding handle respectively extend towards the symmetrical line between the two handrail handles;
the first hinge seat is arranged at the folding end of the first folding handle, the first hinge seat is provided with an L-shaped similar hinge groove, and the bottom of the hinge groove is provided with a through first locking hole; the top of the first hinging seat is provided with a first rotating hole communicated with the hinging groove;
the second hinge seat is arranged at the folding end of the second folding handle, the top of the second hinge seat is provided with a rotating part, and the rotating part is provided with a second rotating hole; the second hinge seat is provided with a second vertically-through locking hole;
the first rotating hole and the second rotating hole are sequentially connected through a rotating shaft, so that the second hinge seat is hinged in the hinge groove, and the second hinge seat can rotate around the axis of the second rotating hole;
the fixing pin detachably connects the second locking hole and the first locking hole.
6. The integrally ganged-adjusted wheelchair of claim 5, wherein the folding armrest frame further comprises a folding press;
the top of the folding pressing piece is provided with an installation clamping groove, and the bottom of the installation clamping groove is provided with a through third locking hole;
one end of the folding pressing piece is provided with a pressing plate, one end of the pressing plate is connected with the folding pressing piece, and the other end of the pressing plate is outwards far away from the folding pressing piece and is bent upwards;
the top of the fixed pin is provided with a clamping round table, and the diameter of the clamping round table is larger than that of the third locking hole;
the bottom of the fixed pin sequentially passes through the installation clamping groove, the third locking hole, the second locking hole and the first locking hole, so that the folding pressing piece is clamped at the top of the first hinging seat.
7. The integrally ganged-adjusted wheelchair of claim 1, wherein the wheel carriage comprises casters and a shock absorbing assembly;
the damping component comprises a damping spring and a connecting column;
the top of the connecting column is fixedly arranged on the front side of the bottom of the wheel frame; the universal castor is fixed at the bottom of the connecting column;
the damping spring is sleeved outside the connecting column, the top of the damping spring is fixedly connected with the connecting seat, and the bottom of the damping spring is propped against the top of the universal castor.
8. The integrally ganged-adjusted wheelchair of claim 1, further comprising a brake assembly comprising a first brake lever, a second brake lever, and a brake member;
the first brake handle is arranged on the two handrail handles, the second brake handle is arranged on the wheel frame, and the first brake handle and the second brake handle are respectively in driving connection with the brake piece through pipelines.
9. The integrally ganged-adjusted wheelchair of claim 1, wherein the foot rest comprises two swing arms, two telescoping arms, two calf pads and two foot supports;
the top ends of the two swinging rods are respectively hinged with the second rotating seat, and the bottom ends of the two swinging rods are respectively hinged with the top ends of the two telescopic rods;
the two footrests are respectively arranged at the bottom ends of the telescopic rods;
the two shank pads are respectively assembled with the middle parts of the two swinging rods.
10. A wheelchair according to claim 3, wherein the angle a between the support surface of the back rest support and the horizontal is in the range 107-137 degrees;
the angle range of the included angle B between the supporting surface of the seat frame and the horizontal plane is 10-15 degrees;
the angle range of the included angle C between the supporting surface of the armrest frame and the horizontal plane is 10-15 degrees;
the angle range of the included angle D between the supporting surface of the pedal frame and the horizontal plane is 111-141 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310764569.4A CN116785084A (en) | 2023-06-27 | 2023-06-27 | Wheelchair of integrative linkage regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310764569.4A CN116785084A (en) | 2023-06-27 | 2023-06-27 | Wheelchair of integrative linkage regulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116785084A true CN116785084A (en) | 2023-09-22 |
Family
ID=88039374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310764569.4A Pending CN116785084A (en) | 2023-06-27 | 2023-06-27 | Wheelchair of integrative linkage regulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116785084A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117653473A (en) * | 2024-01-31 | 2024-03-08 | 福佑康智能医疗科技(昆山)有限公司 | Wheelchair armrest mechanism |
-
2023
- 2023-06-27 CN CN202310764569.4A patent/CN116785084A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117653473A (en) * | 2024-01-31 | 2024-03-08 | 福佑康智能医疗科技(昆山)有限公司 | Wheelchair armrest mechanism |
| CN117653473B (en) * | 2024-01-31 | 2024-04-23 | 福佑康智能医疗科技(昆山)有限公司 | Wheelchair armrest mechanism |
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