CN110693656A

CN110693656A - Liftable wheelchair

Info

Publication number: CN110693656A
Application number: CN201911170079.1A
Authority: CN
Inventors: 郑英
Original assignee: Yuanshengtai (jiangsu) Investment Development Co Ltd
Current assignee: Yuanshengtai (jiangsu) Investment Development Co Ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-01-17

Abstract

The invention relates to the technical field of wheelchairs, in particular to a liftable wheelchair which comprises a frame, wherein a cushion is arranged on the frame, a backrest and a dragging plate are hinged to the upper end and the lower end of the cushion, handrails are arranged on two sides of the frame, two sides of the lower end of each handrail are positioned on the side surface of the frame and are rotatably connected with a roller, one end of each handrail is rotatably connected with a second gear through a second connecting shaft, and the other end of each second gear is connected with a third gear through chain transmission.

Description

Liftable wheelchair

Technical Field

The invention relates to the technical field of wheelchairs, in particular to a liftable wheelchair.

Background

Wheelchairs are chairs equipped with wheels to help replace walking and are classified into electric and manual folding wheelchairs. The movable tool is an important movable tool for home rehabilitation, turnover transportation, treatment and outing activities of wounded persons, patients and disabled persons.

The existing wheelchair is relatively single in structure, a human body cannot be lifted to a self-standing state according to the actual use needs of personnel, the wheelchair which can adjust the standing posture of a person on the wheelchair is lacking, improvement exists, the traditional wheelchair driven by an external motor easily has mechanical faults, and the manual lifting wheelchair cannot be realized, so that the human body can stand.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a liftable wheelchair, which solves the problems that the traditional wheelchair is relatively fixed in structure and inconvenient to use, and an electric wheelchair is easy to damage and cannot be lifted manually as required so as to realize standing of a human body.

The invention provides the following technical scheme: a liftable wheelchair comprises a frame, a cushion is arranged on the frame, a backrest and a planker are hinged to the upper end and the lower end of the cushion, handrails are arranged on two sides of the frame, two sides of the lower end of each handrail are located on the side face of the frame and are rotatably connected with a roller, one end of each handrail is rotatably connected with a second gear through a second connecting shaft, the other end of each second gear is connected with a third gear through chain transmission, the third gear is rotatably connected with the side face of the frame through a pin shaft, the lower end of the third gear is connected with a fourth gear through chain meshing transmission, the fourth gear is fixedly connected with one end of each roller through a second connecting shaft, the upper end of the backrest is rotatably connected with a conveying belt through a first connecting shaft, the lower end inside the conveying belt is rotatably connected with the front end of the backrest through a first gear, and a tensioning wheel and a lifting, the tensioning wheel and the lifting driving wheel are respectively connected with the backrest through the concave frame in a rotating mode, one side of the conveying belt is fixedly connected with one side of the cushion through a pin, the gear shifting piece is arranged on one side of the armrest, and one end of the tensioning wheel is fixedly connected with the second connecting shaft.

Preferably, one side of the second gear is in transmission connection with a fifth gear through a manual shifting wheel chain, and the fifth gear is in rotation connection with the other end of the handrail through a shaft.

Preferably, the second gear, the third gear and the fifth gear are all in a double gear structure.

Preferably, the lower end of the carriage is provided with a pedal plate, and the pedal plate is rotatably connected with two sides of the lower end of the carriage through a rotating shaft.

Preferably, one side of the upper end of the cushion, which is positioned on the conveyor belt, is fixedly connected with a sponge back cushion, and the other side of the sponge back cushion is provided with a chest belt.

Preferably, the lifting driving wheel and the tensioning wheel are respectively positioned on the same vertical plane, the diameter of the tensioning wheel is larger than that of the lifting driving wheel, and transmission teeth which are matched and meshed with the conveying belt are arranged outside the lifting driving wheel and the tensioning wheel.

Preferably, the upper end sliding connection of cushion has the backing plate, the backing plate lower extreme is equipped with the slider, the upper end of cushion is equipped with the spout that matches each other with the slider.

Compared with the prior art, the invention provides a liftable wheelchair, which has the following beneficial effects:

the handrail is rotated to drive the second connecting shaft and the fifth gear to rotate, the second gear is driven to rotate through shifting, the second gear drives the third gear to rotate through the chain, the third gear drives the fourth gear to rotate through the chain, the fourth gear drives the roller to rotate, the back and forth movement of the vehicle is formed, when the handrail rotates and sequentially drives the second connecting shaft and the fifth gear to rotate, the tensioning wheel is driven to rotate and is pressed by the lifting driving wheel to prevent slipping, the lifting driving wheel rotates to drive the first connecting shaft and the first gear to synchronously rotate, so that the conveyor belt ascends or descends, the conveyor belt drives the sponge back cushion to ascend, the sponge back cushion drives the cushion to ascend, the cushion drives the planker to move the center of gravity, the standing is completed, the shape of the wheelchair is changed, the problem that the traditional wheelchair is inconvenient to use due to relatively fixed structure is solved, and the electric wheelchair is easy to damage, the wheelchair can not be manually lifted according to the requirement, so that the human body stands.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a side view of the structure of the present invention;

FIG. 3 is a chain structure profile of the present invention;

fig. 4 is a schematic diagram of a lifting structure of the conveyor belt.

In the figure: 1. a frame; 2. a cushion; 3. a backrest; 4. a first connecting shaft; 5. a conveyor belt; 6. a first gear; 7. a tensioning wheel; 8. a lifting driving wheel; 9. a sponge back cushion; 10. a second gear; 11. a second connecting shaft; 12. a chain; 13. a third gear; 14. a fourth gear; 15. a roller; 16. a carriage; 17. a fifth gear; 18. a handrail; 19. a chest strap.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a liftable wheelchair comprises a frame 1, a seat cushion 2 is arranged on the frame 1, a backrest 3 and a dragging plate 16 are hinged at the upper end and the lower end of the seat cushion 2, handrails 18 are arranged at the two sides of the frame 1, rollers 15 are rotatably connected at the two sides of the lower end of each handrail 18, one end of each handrail 18 is rotatably connected with a second gear 10 through a second connecting shaft 11, the other end of each second gear 10 is in transmission connection with a third gear 13 through a chain 12, the third gear 13 is rotatably connected with the side surface of the frame 1 through a pin shaft, the lower end of each third gear 13 is in meshing transmission connection with a fourth gear 14 through the chain 12, the fourth gear 14 is fixedly connected with one end of each roller 15 through the second connecting shaft 11, a conveyor belt 5 is rotatably connected at the upper end of the backrest 3 through a first connecting shaft 4, the lower end inside the conveyor belt 5 is rotatably connected, the inside and outside both sides of conveyer belt 5 mesh transmission respectively has tension pulley 7 and lift action wheel 8, and tension pulley 7 and lift action wheel 8 link to each other with the rotation of back 3 through concave type frame respectively, and conveyer belt 5 one side is fixed continuous with one side of cushion 2 through the pin, and one side of handrail 18 is equipped with the plectrum of shifting, and the one end of tension pulley 7 is fixed continuous with second connecting axle 11.

One side of the second gear 10 is in transmission connection with a fifth gear 17 through a manual shifting wheel chain 20, the fifth gear 17 is in rotation connection with the other end of the handrail 18 through a shaft, so that the fifth gear 17 and the end part of the handrail 18 can rotate relatively conveniently, the second gear 10, the third gear 13 and the fifth gear 17 are in a double-gear structure, so that two chains 12 can be used conveniently, a pedal plate is arranged at the lower end of the carriage 16 and is in rotation connection with two sides of the lower end of the carriage 16 through a rotating shaft, the pedal plate is arranged to provide leg support for a patient, a sponge back cushion 9 is fixedly connected to one side, positioned on the conveyor belt 5, of the upper end of the seat cushion 2, a chest belt 19 is arranged on the other side of the sponge back cushion 9 to provide rest for the personnel conveniently, the lifting driving wheel 8 and the tensioning wheel 7 are respectively positioned on the same vertical plane, the diameter of the tensioning wheel 7 is larger than that of the lifting, make things convenient for the transmission, the upper end sliding connection of cushion 2 has the backing plate, and the backing plate lower extreme is equipped with the slider, and the upper end of cushion 2 is equipped with the spout that matches each other with the slider, makes things convenient for the backing plate to take out from cushion 2.

When the wheelchair works, the handrail 18 is rotated to drive the second connecting shaft 11 and the fifth gear 17 to rotate, the second gear 10 is driven to rotate through shifting, the second gear 10 drives the third gear 13 to rotate through the chain 12, the third gear 13 drives the fourth gear 14 to rotate through the chain 12, the fourth gear 14 drives the roller 15 to rotate, the back and forth movement of the vehicle is formed, when the handrail 18 rotates and sequentially drives the second connecting shaft 11 and the fifth gear 17 to rotate through the shifting plectrum, the tensioning wheel 7 is driven to rotate, the tensioning wheel 7 is pressed by the lifting driving wheel 8 to prevent slipping, the lifting driving wheel 8 rotates to drive the first connecting shaft 4 and the first gear 6 to synchronously rotate, so that the conveying belt 5 ascends or descends, the conveying belt 5 drives the sponge cushion 9 to ascend, the planker cushion 9 drives the cushion 2 to ascend, the seat cushion 2 drives the cushion 16 to move the gravity center, the wheelchair is completely stood, and the form change of the wheelchair, the problem of the inconvenient use that traditional wheelchair structure is fixed relatively and appear to and the problem that electronic wheelchair damaged easily, can not go up and down to the wheelchair as required manually is solved.

Claims

1. A liftable wheelchair comprises a frame (1), wherein a cushion (2) is arranged on the frame (1), a backrest (3) and a carriage (16) are hinged to the upper end and the lower end of the cushion (2), handrails (18) are arranged on two sides of the frame (1), two sides of the lower end of each handrail (18) are located on the side face of the frame (1) and are rotatably connected with a roller (15), the liftable wheelchair is characterized in that one end of each handrail (18) is rotatably connected with a second gear (10) through a second connecting shaft (11), the other end of each second gear (10) is in transmission connection with a third gear (13) through a chain (12), the third gear (13) is rotatably connected with the side face of the frame (1) through a pin shaft, the lower end of the third gear (13) is in transmission connection with a fourth gear (14) through the chain (12) in a meshing manner, the fourth gear (14) is fixedly connected with one end of each roller (15) through the second, the upper end of the backrest (3) is rotatably connected with a conveyor belt (5) through a first connecting shaft (4), the lower end in the conveyor belt (5) is rotatably connected with the front end of the backrest (3) through a first gear (6), the inner side and the outer side of the conveyor belt (5) are respectively meshed with a tension wheel (7) and a lifting driving wheel (8) in a transmission mode, the tension wheel (7) and the lifting driving wheel (8) are respectively connected with the backrest (3) through concave frames in a rotating mode, one side of the conveyor belt (5) is fixedly connected with one side of the seat cushion (2) through pins, a gear shifting piece is arranged on one side of the armrest (18), and one end of the tension wheel (7) is fixedly connected with a second connecting shaft (11).

2. The liftable wheelchair according to claim 1, wherein: one side of the second gear (10) is in transmission connection with a fifth gear (17) through a manual shifting wheel chain (20), and the fifth gear (17) is in rotation connection with the other end of the handrail (18) through a shaft.

3. The liftable wheelchair according to claim 2, wherein: the second gear (10), the third gear (13) and the fifth gear (17) are all in a double gear structure.

4. The liftable wheelchair according to claim 1, wherein: the lower end of the carriage (16) is provided with a pedal plate, and the pedal plate is rotatably connected with two sides of the lower end of the carriage (16) through a rotating shaft.

5. The liftable wheelchair according to claim 2, wherein: the upper end of cushion (2) is located one side fixedly connected with sponge cushion (9) of conveyer belt (5), the opposite side of sponge cushion (9) is equipped with pectoral girdle (19).

6. The liftable wheelchair according to claim 1, wherein: the lifting driving wheel (8) and the tensioning wheel (7) are respectively positioned on the same vertical plane, the diameter of the tensioning wheel (7) is larger than that of the lifting driving wheel (8), and transmission teeth which are matched and meshed with the conveyor belt (5) are arranged outside the lifting driving wheel and the tensioning wheel.

7. The liftable wheelchair according to claim 1, wherein: the upper end sliding connection of cushion (2) has the backing plate, the backing plate lower extreme is equipped with the slider, the upper end of cushion (2) is equipped with the spout that matches each other with the slider.