CN112891081A - Leg wheel combined type wheelchair - Google Patents
Leg wheel combined type wheelchair Download PDFInfo
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- CN112891081A CN112891081A CN202110101745.7A CN202110101745A CN112891081A CN 112891081 A CN112891081 A CN 112891081A CN 202110101745 A CN202110101745 A CN 202110101745A CN 112891081 A CN112891081 A CN 112891081A
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- wheel
- wheelchair
- rod
- connecting rod
- cushion
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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
- A61G5/06—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps
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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
- A61G5/06—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps
- A61G5/061—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps for climbing stairs
-
- 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
- A61G5/06—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps
- A61G5/068—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps with extensible supports pushing upwards, e.g. telescopic legs
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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
- A61G5/0816—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding side to side, e.g. reducing or expanding the overall width of the wheelchair
- A61G5/0825—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding side to side, e.g. reducing or expanding the overall width of the wheelchair comprising a scissor-type frame, e.g. having pivoting cross bars for enabling folding
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—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
- A61G5/1054—Large wheels, e.g. higher than the seat portion
-
- 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
- A61G5/1081—Parts, details or accessories with shock absorbers or other suspension arrangements between frame and seat
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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)
Abstract
The invention discloses a leg wheel composite wheelchair, which comprises a wheelchair body and a crossing mechanism, wherein two sides of the wheelchair body are respectively provided with a driving wheel, the middle part of the wheelchair body is provided with a cushion, the rear side of the wheelchair body is provided with a back cushion, each driving wheel is driven by a driving motor to rotate, the front side of each driving wheel is provided with an auxiliary wheel, the crossing mechanism is arranged on the outer side of each driving wheel and comprises a climbing rod, a first crossing wheel and a second crossing wheel, the first crossing wheel is arranged on the outer side of the driving wheel and is driven by the driving motor to rotate, the second crossing wheel is arranged on the front side of the first crossing wheel, the first crossing wheel and the second crossing wheel are driven by a driving belt, the climbing rod comprises a first connecting rod, a second connecting rod and a third connecting rod which are integrally formed, the first crossing wheel and the second connecting rod are hinged by a fourth connecting rod, a rotating shaft of the second crossing wheel is hinged, not only can move on the flat ground, but also can climb stairs by self, thereby being convenient for the elderly and the disabled to go out.
Description
Technical Field
The invention relates to the technical field of wheelchairs, in particular to a leg-wheel combined wheelchair.
Background
As China walks into an aging society, the demand of wheelchair demand by elderly people with inconvenient actions increases day by day, and meanwhile, the population quantity of physically disabled people is also rising due to accidents and natural disasters, and no convenient elevator or barrier-free channel is available in old buildings and rural areas in regions with relatively laggard economy, so that the demand on wheelchair capable of climbing stairs and crossing gullies is great.
However, the existing wheelchair is generally insensitive to steering, can only run on the flat ground, cannot be operated independently, and needs help of nursing staff when climbing stairs.
To the present huge elderly and physically disabled people, the electric wheelchair adaptable to various terrains is urgently needed in order to reduce the burden of family care, make up the shortage of the number of nursing staff, and improve the employment rate and the life quality of physically disabled people.
Disclosure of Invention
According to the defects of the prior art, the invention aims to provide a leg-wheel combined wheelchair which can not only move on the flat ground, but also climb stairs and cross obstacles by self, and is convenient for the elderly and the physically disabled to go out.
In order to solve the technical problems, the invention adopts the technical scheme that:
a leg-wheel composite wheelchair comprising:
the wheelchair comprises a wheelchair body, wherein two sides of the wheelchair body are respectively provided with a driving wheel, the middle part of the wheelchair body is provided with a cushion, the rear side of the wheelchair body is provided with a back cushion, each driving wheel is driven to rotate by a driving motor, and the front side of each driving wheel is provided with an auxiliary wheel;
the crossing mechanism is arranged outside each driving wheel and comprises a climbing rod, a first crossing wheel and a second crossing wheel, the first cross wheel is arranged on the outer side of the driving wheel and is driven to rotate by the driving motor, the second spanning wheel is arranged at the front side of the first spanning wheel, the first spanning wheel and the second spanning wheel are driven by a transmission belt, the climbing rod comprises a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is fixed with one end of the second connecting rod, the other end of the second connecting rod is fixed with one end of the third connecting rod, the other end of the first connecting rod is suspended with the other end of the third connecting rod, the first spanning wheel is hinged with the second connecting rod through a fourth connecting rod, and a rotating shaft of the second spanning wheel is hinged with the second connecting rod through a fifth connecting rod;
the first crossing wheel is driven to rotate in the stair climbing process through the driving motor, the second crossing wheel is driven to rotate, the climbing rod is driven to move through the fourth connecting rod and the fifth connecting rod, and the other end of the first connecting rod and the other end of the third connecting rod are used as supporting points, so that the wheelchair body moves up and down.
Furthermore, a supporting plate and a third spanning wheel are further arranged between the first spanning wheel and the second spanning wheel, the supporting plate is arranged on the wheelchair body, the third spanning wheel is installed on the supporting plate and hinged with the second connecting rod through a sixth connecting rod, and the driving belt is sleeved on the first spanning wheel, the second spanning wheel and the third spanning wheel.
Furthermore, a first support rod is further arranged on the second connecting rod, and the first support rod is of a door-shaped structure.
Furthermore, two sides of the cushion are respectively provided with a cushion supporting rod, and the cushion is erected on the wheelchair body through the cushion supporting rods.
Furthermore, the leg wheel composite wheelchair also comprises an adjusting mechanism, the adjusting mechanism is respectively arranged below each cushion supporting frame, the adjusting mechanism comprises a movable hinged support, a fixed hinged support, an adjusting rod, a telescopic rod and a rotating piece, the movable hinged support is arranged on the wheelchair body and can move up and down, the movable hinged support is hinged with one end of the cushion supporting rod, the fixed hinge support is fixed on the wheelchair body and is hinged with the other end of the cushion supporting rod, the adjusting rod is fixed below the cushion supporting rod, a distance measuring instrument is arranged on the adjusting rod, the testing head of the range finder is arranged in the vertical direction relative to the horizontal ground, the telescopic rod is parallel to the adjusting rod, one end of the telescopic rod is fixed on the adjusting rod, the other end of the telescopic rod is hinged to one end of the rotating piece, and the other end of the rotating piece is hinged to the cushion supporting frame.
Further, the rotating member is an electromagnetic absorber.
Furthermore, the leg wheel combined type wheelchair further comprises two second support rods and two folding connecting rods, wherein the two second support rods are connected with the wheelchair body and are respectively arranged below the two adjusting rods, the two folding connecting rods are arranged in a crossed mode, one end of each folding connecting rod is sleeved on one adjusting rod, and the other end of each folding connecting rod is sleeved on one second support rod.
Furthermore, the leg wheel combined wheelchair further comprises a controller, an upward button and a downward button, wherein the upward button, the downward button, the telescopic rod and the range finder are electrically connected with the controller, the distance between the range finder and the horizontal ground is measured through the range finder, when the wheelchair goes upstairs, the upward button is pressed, the controller controls the telescopic rod to be shortened according to the comparison between the distance measured by the range finder and the distance between the range finder and the horizontal ground at the moment, so that the cushion is kept horizontal, when the wheelchair goes downstairs, the downward button is pressed, and the controller controls the telescopic rod to stretch and retract according to the comparison between the distance measured by the range finder and the distance between the range finder and the horizontal ground at the moment, so that the cushion is kept horizontal.
Furthermore, the wheelchair body is provided with four upright posts which form a rectangular frame, and each cushion supporting rod is arranged between the two upright posts.
Further, the auxiliary wheels are universal wheels.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention relates to a leg wheel composite wheelchair which is provided with a crossing mechanism, can run on flat ground and can cross stairs and obstacles, a first crossing wheel is driven to rotate in the process of climbing stairs and crossing obstacles by a driving motor, the first crossing wheel rotates to drive a driving belt and a second crossing wheel to rotate, a climbing rod moves by driving the climbing rod through a fourth connecting rod and a fifth connecting rod, the other end of the first connecting rod and the other end of the third connecting rod are taken as supporting points, and when the other end of the first connecting rod and the other end of the third connecting rod are in contact with the ground, the stairs or the obstacles, the wheelchair body rotates by a certain angle, so that the wheelchair body can climb the stairs and cross the obstacles and can adapt to various terrains.
2. According to the leg-wheel combined wheelchair, the translation and the crossing motion of the wheelchair body are combined, and during the crossing motion, the driving motor simultaneously drives the driving wheel and the first crossing wheel to rotate, and the driving wheel simultaneously performs seat rolling and translation motions.
3. The leg-wheel combined wheelchair is also provided with an adjusting mechanism, the distance between the adjusting rod and the ground is measured in real time, each rod piece is automatically controlled to rotate, the cushion is adjusted to be horizontal, the safety and the stability are guaranteed to the greatest extent, and the overturning sense during crossing is reduced.
4. According to the leg-wheel combined wheelchair, the rotating piece is designed into the electromagnetic shock absorber, the wheelchair can keep stable in the movement process by adjusting the cushion supporting rod, the adaptability is strong, and the fear psychology of a rider in the use process is reduced.
5. The leg-wheel combined wheelchair disclosed by the invention is convenient to fold and store due to the special design of the wheelchair body.
Drawings
Fig. 1 is a schematic view of the overall structure of an angle of the present invention.
Figure 2 is a schematic view of the connection of the wheelchair body and the spanning mechanism of the present invention.
FIG. 3 is a schematic view of the crossing mechanism of the present invention.
Figure 4 is a schematic view of the wheelchair body and the spanning mechanism in a first state for climbing stairs upwards.
Figure 5 is a schematic view of the wheelchair body and the spanning mechanism in a second state for climbing stairs upwards.
Figure 6 is a third state diagram of the wheelchair body and the climbing mechanism climbing stairs upwards.
Figure 7 is a schematic view of the connection of the wheelchair body and the adjustment mechanism of the present invention.
Fig. 8 is a schematic view of another embodiment of the present invention.
Wherein: 1. a wheelchair body; 11. a drive wheel; 12. a cushion; 13. back cushion; 14. a cushion support bar; 15. an up button; 16. a down button; 17. a handrail; 18. a second support bar; 19. folding the connecting rod; 110. a column; 111. an auxiliary wheel; 112. a foot pedal; 113. a drive motor;
2. a crossing mechanism; 21. climbing a pole; 211. a first link; 212. a second link; 213. a third link; 214. a fourth link; 215. a fifth link; 216. a sixth link; 22. a first cross-over wheel; 23. a second spanning wheel; 24. a transmission belt; 25. a third cross-over wheel; 26. a support plate; 27. a first support bar;
3. an adjustment mechanism; 31. a movable hinged support; 32. a fixed hinge support; 33. adjusting a rod; 34. a telescoping member; 35. a rotating member; 36. a distance measuring instrument.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
A leg-wheel composite wheelchair is shown in FIG. 1, and includes a wheelchair body 1 and a spanning mechanism 2. The wheelchair body 1 can be driven by the spanning mechanism 2 to climb stairs and cross obstacles.
Referring to fig. 1, two driving wheels 11 are respectively arranged on two sides of a wheelchair body 1, a seat cushion 12 is arranged in the middle of the wheelchair body, a back cushion 13 is arranged on the rear side of the back cushion 13, a storage bag is arranged on the rear side of the storage bag, a power supply battery is arranged at the bottom of the storage bag, each driving wheel 11 is driven to rotate by a driving motor 113, an auxiliary wheel 111 is arranged on the front side of each driving wheel 11, the wheelchair body 1 can walk on the ground through the driving wheels 11 and the auxiliary wheels 111, armrests 17 are arranged on two sides of the wheelchair body 1, each armrest 17 is arranged above one driving wheel 11, and two pedals 112 are arranged.
Referring to fig. 1 to 6, a crossing mechanism 2 is disposed outside each driving wheel 11, the crossing mechanism 2 includes a climbing rod 21, a first crossing wheel 22 and a second crossing wheel 23, the first crossing wheel 22 is mounted outside the driving wheel 11 and is driven to rotate by a driving motor 113, the second crossing wheel 23 is mounted in front of the first crossing wheel 22, the first crossing wheel 22 and the second crossing wheel 23 are driven by a driving belt 24, the climbing rod 21 includes a first link 211, a second link 212 and a third link 213, one end of the first link 211 is fixed to one end of the second link 212, the other end of the second link 212 is fixed to one end of the third link 213, the other end of the first link 211 is suspended from the other end of the third link 213, the first link 211, the second link 212 and the third link 213 form a gate-type structure, the first crossing wheel 22 and the second link 212 are hinged by a fourth link 214, one end of the fourth link 214 is hinged to the first crossing wheel 22, the other end is hinged with the second connecting rod 212, the second spanning wheel 23 is hinged with the second connecting rod 212 through the fifth connecting rod 215, one end of the fifth connecting rod 215 is hinged with the second spanning wheel 23, the other end is hinged with the second connecting rod 212, the climbing rod 21 plays a supporting role, when the wheelchair body 1 is suspended, the wheelchair body 1 is supported, and the spanning mechanism 2 interacts with the wheelchair body 1, so that the wheelchair body 1 can be helped to climb stairs and cross obstacles.
Wherein, drive first wheel 22 of striding through driving motor 113 and rotate in the in-process of climbing the building and crossing the barrier, first wheel 22 of striding rotates and then drives drive belt 24 and second and stride across wheel 23 and rotate, drive belt 24 through fourth connecting rod 214 and fifth connecting rod 215 and move pole 21 of climbing, use the other end of first connecting rod 211 and the other end of third connecting rod 213 as the strong point, when the other end of first connecting rod 211 and the other end of third connecting rod 213 and ground or stair contact, thereby make wheelchair body 1 rotate certain angle, realize climbing the building of wheelchair body 1 and cross the barrier.
Referring to fig. 2-6, the step-over mechanism 2 will be described to drive the wheelchair body 1 to climb up the stairs. At the beginning, referring to fig. 4, the driving wheel 11 and the auxiliary wheel 111 are respectively arranged on two steps, referring to fig. 5, the driving motor 113 drives the first striding wheel 22 to rotate, the first striding wheel 22 rotates to further drive the driving belt 24 and the second striding wheel 23 to rotate, so that the climbing rod 21 rotates a certain angle through the transmission of the fourth connecting rod 214 and the fifth connecting rod 215, the other end of the first connecting rod 211 and the other end of the third connecting rod 213 contact with the stairs, so that the wheelchair body 1 rotates a certain angle to suspend, referring to fig. 6, the wheelchair body 1 continues to rotate a certain angle, so that the driving wheel 11 and the auxiliary wheel 111 respectively reach the two steps.
In order to stabilize the spanning mechanism 2, referring to fig. 3, a support plate 26 and a third spanning wheel 25 are further disposed between the first spanning wheel 22 and the second spanning wheel 23, the support plate 26 is disposed on the wheelchair body 1, the third spanning wheel 25 is mounted in the middle of the support plate 26 and is hinged to the second connecting rod 212 through a sixth connecting rod 216, one end of the sixth connecting rod 216 is hinged to the third spanning wheel 25, the other end is hinged to the middle of the second connecting rod 212, and the transmission belt 24 is sleeved on the first spanning wheel 22, the second spanning wheel 23 and the third spanning wheel 25.
Referring to fig. 3, the second connecting rod 212 is further provided with a first supporting rod 27, and the first supporting rod 27 is a door-shaped structure. By providing the first support rod 27, the stability of the climbing rod 21 is increased. In the invention, the spanning mechanism 2 can be provided with a reinforcing rib according to actual conditions, so that the climbing rod 21 can support the whole wheelchair body 1 and the weight of people, and the wheelchair body 1 is ensured not to topple in the process of inclining.
In the present invention, as shown in fig. 1, one seat support rod 14 is provided on each side of the seat 12, and the seat 12 is mounted on the wheelchair body 1 via the two seat support rods 14.
In order to ensure that the cushion 12 keeps horizontal and increase the comfort of people when the wheelchair climbs a building and crosses an obstacle, the leg wheel compound wheelchair also comprises an adjusting mechanism 3, and the angle of the cushion 12 is adjusted by the adjusting mechanism 3, so that the cushion 12 keeps horizontal relative to the ground all the time.
Referring to fig. 3, an adjusting mechanism 3 is respectively arranged below the supporting frames of each seat cushion 12, one adjusting mechanism 3 adjusts one seat cushion supporting rod 14, and the two adjusting mechanisms 3 move completely the same during adjustment.
Referring to fig. 7, the adjusting mechanism 3 includes a movable hinge support 31, a fixed hinge support 32, an adjusting rod 33, a telescopic member 34 and a rotating member 35, the movable hinge support 31 is disposed on the wheelchair body 1 and can move up and down, the movable hinge support 31 is hinged to one end of the seat cushion support rod 14, the fixed hinge support 32 is fixed on the wheelchair body 1 and is hinged to the other end of the seat cushion support rod 14, the adjusting rod 33 is fixed below the seat cushion support rod 14, a distance meter 36 is mounted on the adjusting rod 33, the distance meter 36 can enable the laser distance meter 36 to be arranged in a vertical direction relative to the horizontal ground, the telescopic member 34 is parallel to the adjusting rod 33, the telescopic member 34 can be an electric push rod, one end of the telescopic member 34 is fixed on the adjusting rod 33, the other end of the telescopic member is hinged to one end of the rotating member 35.
In the adjustment process, the distance between the distance meter 36 and the horizontal ground is measured through the distance meter 36, in the process of climbing stairs and crossing obstacles, the distance measured by the distance meter 36 is compared with the distance between the distance meter 36 and the horizontal ground, when the distance is increased, the telescopic piece 34 is shortened, the rotating piece 35 is inclined downwards by a certain angle, the supporting frame of the seat cushion 12 is changed from upward inclination to horizontal, and then the seat cushion 12 is horizontal; when the distance becomes smaller, the extension member 34 extends to make the rotating member 35 tilt upward by a certain angle, and the supporting frame of the seat cushion 12 is changed from downward to horizontal, so that the seat cushion 12 is horizontal.
In order to prevent the seat cushion 12 from shaking too much when the inclination angle is changed, and to improve the comfort of the user when using the wheelchair, the rotor 35 is an electromagnetic shock absorber.
In order to control the wheelchair conveniently, referring to fig. 1 and 7, the leg-wheel composite wheelchair further comprises a controller, an upward button 15 and a downward button 16, wherein the upward button 15, the downward button 16, the telescopic member 34 and the distance meter 36 are electrically connected, the distance meter 36 measures the distance between the distance meter 36 and the horizontal ground, when going upstairs, the upward button 15 is pressed, the controller controls the telescopic member 34 to be shortened according to the comparison between the distance measured by the distance meter 36 and the distance between the distance meter 36 and the horizontal ground, so that the seat cushion 12 is kept horizontal, when going downstairs, the downward button 16 is pressed, and the controller controls the telescopic member 34 to be stretched according to the comparison between the distance measured by the distance meter 36 and the distance between the distance meter 36 and the horizontal ground, so that the seat cushion 12 is kept horizontal.
The adjusting mechanism 3 is arranged for measuring and adjusting the distance between the rod 33 and the ground in real time, automatically controlling the rotation of each rod piece, adjusting the level of the cushion, ensuring the safety and the stability to the maximum extent and reducing the overturning sense during crossing.
In the present invention, in order to make the wheelchair foldable and convenient to store, as shown in fig. 7 and 8, the leg-wheel composite wheelchair further includes two second support rods 18 and two folding connecting rods 19, the two second support rods 18 are both connected to the wheelchair body 1 and respectively disposed below the two adjusting rods 33, the two folding connecting rods 19 are arranged in a crossing manner, one end of each folding connecting rod 19 is sleeved on one adjusting rod 33, and the other end is sleeved on one second support rod 18. The wheelchair can be folded from the folding connecting rod 19 by rotating the folding connecting rod.
Referring to fig. 1 to 8, the wheelchair body 1 is provided with four upright posts 110, the four upright posts 110 form a rectangular frame, each cushion support rod 14 is arranged between two upright posts 110, each adjusting rod 33 is fixed between two upright posts 110, and the second support rod 18 is fixed between two upright posts 110. The driving motor 113, the driving wheel 11 and the first spanning wheel 22 are installed on the upright post 110 at the rear side of the wheelchair body 1, the second spanning wheel 22 is installed on the second supporting rod 18, and the supporting plate 26 is fixed on the second supporting rod 18 and the upright post 110 at the rear side of the wheelchair body 1.
Specifically, referring to fig. 1, each armrest 17 is disposed between two uprights 110, and the up button 15 and the down button 16 are disposed on the armrests 17. Push handles are respectively arranged at the tops of the two upright posts 110 at the rear side of the wheelchair body 1, and pedals 112 are respectively arranged at the bottoms of the two upright posts 110 at the front side of the wheelchair body 1. The back cushion 13 is arranged between the two upright posts 110 at the rear side of the wheelchair body 1.
The auxiliary wheels 111 are universal wheels, so that the wheelchair can walk on the ground at any angle. The wheelchair body 1 is made of aluminum alloy with high strength and light weight.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A leg-wheel composite wheelchair comprising:
the wheelchair comprises a wheelchair body, wherein two sides of the wheelchair body are respectively provided with a driving wheel, the middle part of the wheelchair body is provided with a cushion, the rear side of the wheelchair body is provided with a back cushion, each driving wheel is driven to rotate by a driving motor, and the front side of each driving wheel is provided with an auxiliary wheel;
the crossing mechanism is arranged outside each driving wheel and comprises a climbing rod, a first crossing wheel and a second crossing wheel, the first cross wheel is arranged on the outer side of the driving wheel and is driven to rotate by the driving motor, the second spanning wheel is arranged at the front side of the first spanning wheel, the first spanning wheel and the second spanning wheel are driven by a transmission belt, the climbing rod comprises a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is fixed with one end of the second connecting rod, the other end of the second connecting rod is fixed with one end of the third connecting rod, the other end of the first connecting rod is suspended with the other end of the third connecting rod, the first spanning wheel is hinged with the second connecting rod through a fourth connecting rod, and a rotating shaft of the second spanning wheel is hinged with the second connecting rod through a fifth connecting rod;
the first crossing wheel is driven to rotate in the stair climbing process through the driving motor, the second crossing wheel is driven to rotate, the climbing rod is driven to move through the fourth connecting rod and the fifth connecting rod, and the other end of the first connecting rod and the other end of the third connecting rod are used as supporting points, so that the wheelchair body moves up and down.
2. The leg-wheel composite wheelchair as claimed in claim 1, wherein: a supporting plate and a third spanning wheel are further arranged between the first spanning wheel and the second spanning wheel, the supporting plate is arranged on the wheelchair body, the third spanning wheel is arranged on the supporting plate and is hinged with the second connecting rod through a sixth connecting rod, and the driving belt is sleeved on the first spanning wheel, the second spanning wheel and the third spanning wheel.
3. The leg-wheel composite wheelchair as claimed in claim 1, wherein: the second connecting rod is also provided with a first supporting rod, and the first supporting rod is of a door-shaped structure.
4. The leg-wheel composite wheelchair as claimed in claim 1, wherein: the wheelchair comprises a wheelchair body and is characterized in that two sides of a cushion are respectively provided with a cushion supporting rod, and the cushion is erected on the wheelchair body through the cushion supporting rods.
5. The leg-wheel composite wheelchair as claimed in claim 4, wherein: the leg wheel composite wheelchair also comprises an adjusting mechanism, the adjusting mechanism is respectively arranged below each cushion supporting frame, the adjusting mechanism comprises a movable hinged support, a fixed hinged support, an adjusting rod, a telescopic rod and a rotating piece, the movable hinged support is arranged on the wheelchair body and can move up and down, the movable hinged support is hinged with one end of the cushion supporting rod, the fixed hinge support is fixed on the wheelchair body and is hinged with the other end of the cushion supporting rod, the adjusting rod is fixed below the cushion supporting rod, a distance measuring instrument is arranged on the adjusting rod, the testing head of the range finder is arranged in the vertical direction relative to the horizontal ground, the telescopic rod is parallel to the adjusting rod, one end of the telescopic rod is fixed on the adjusting rod, the other end of the telescopic rod is hinged to one end of the rotating piece, and the other end of the rotating piece is hinged to the cushion supporting frame.
6. The leg-wheel composite wheelchair as claimed in claim 5, wherein: the rotating member is an electromagnetic shock absorber.
7. The leg-wheel composite wheelchair as claimed in claim 5, wherein: the leg wheel combined type wheelchair further comprises two second supporting rods and two folding connecting rods, wherein the two second supporting rods are connected with the wheelchair body and are respectively arranged below the two adjusting rods, the two folding connecting rods are arranged in a crossed mode, one end of each folding connecting rod is sleeved on one adjusting rod, and the other end of each folding connecting rod is sleeved on one second supporting rod.
8. The leg-wheel composite wheelchair as claimed in claim 5, wherein: the leg wheel combined wheelchair further comprises a controller, an upward button and a downward button, the upward button, the downward button, the telescopic rod and the range finder are electrically connected with the controller, the distance between the range finder and the horizontal ground is measured through the range finder, the upward button is pressed when the wheelchair goes upstairs, the telescopic rod is controlled to be shortened through the controller according to the comparison between the distance measured by the range finder and the distance between the range finder and the horizontal ground at the moment, so that the cushion is kept horizontal, the downward button is pressed when the wheelchair goes downstairs, the telescopic rod is controlled to stretch and retract through the controller according to the comparison between the distance measured by the range finder and the distance between the range finder and the horizontal ground at the moment, and the cushion is kept horizontal.
9. The leg-wheel composite wheelchair as claimed in claim 4, wherein: the wheelchair comprises a wheelchair body and is characterized in that four stand columns are arranged on the wheelchair body, the four stand columns form a rectangular frame, and each cushion supporting rod is arranged between the two stand columns.
10. The leg-wheel composite wheelchair as claimed in claim 1, wherein: the auxiliary wheel is a universal wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110101745.7A CN112891081B (en) | 2021-01-26 | 2021-01-26 | Leg wheel combined type wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110101745.7A CN112891081B (en) | 2021-01-26 | 2021-01-26 | Leg wheel combined type wheelchair |
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| Publication Number | Publication Date |
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| CN112891081A true CN112891081A (en) | 2021-06-04 |
| CN112891081B CN112891081B (en) | 2022-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110101745.7A Active CN112891081B (en) | 2021-01-26 | 2021-01-26 | Leg wheel combined type wheelchair |
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| CN211300755U (en) * | 2019-12-17 | 2020-08-21 | 巢湖学院 | Chair for assisting old people to stand |
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| KR20070084967A (en) * | 2006-02-22 | 2007-08-27 | 장순식 | A step apparatus for wheel chair |
| CN201015641Y (en) * | 2006-11-29 | 2008-02-06 | 上海电气集团股份有限公司 | Falling-proof mechanism for the intelligent wheelchair |
| CN202801986U (en) * | 2012-09-24 | 2013-03-20 | 广州市汇英电子有限公司 | Control mechanism of electric wheelchair |
| CN203042684U (en) * | 2013-02-01 | 2013-07-10 | 上海电机学院 | Multifunctional stair climbing wheel chair |
| CN103300981A (en) * | 2013-06-19 | 2013-09-18 | 河北工业大学 | Wheelchair capable of climbing up stair |
| CN105266981A (en) * | 2014-07-14 | 2016-01-27 | 杨宏 | Wheelchair capable of climbing stairs |
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|---|---|
| CN112891081B (en) | 2022-07-19 |
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