CN222218088U

CN222218088U - Wheelchair with rear wheels that can be lifted

Info

Publication number: CN222218088U
Application number: CN202420616630.0U
Authority: CN
Inventors: 蔡木章
Original assignee: Guangdong Shunde Jaeyong Hardware Co ltd
Current assignee: Guangdong Shunde Jaeyong Hardware Co ltd
Priority date: 2024-03-28
Filing date: 2024-03-28
Publication date: 2024-12-24
Anticipated expiration: 2034-03-28

Abstract

The utility model discloses a wheelchair with liftable rear wheels, which comprises a wheelchair frame, rear auxiliary wheels and an air support, wherein the wheelchair frame comprises a lower body frame, the lower body frame comprises a fixed frame and a rotating frame which is rotationally connected with the fixed frame, the rear auxiliary wheels are arranged at the tail end of the rotating frame, an air cylinder section of the air support is rotationally and movably connected to the fixed frame, and a telescopic section of the air support is rotationally and movably connected to the rotating frame.

Description

Wheelchair with liftable rear wheels

Technical Field

The utility model relates to the technical field of wheelchairs, in particular to a wheelchair with liftable rear wheels.

Background

The wheelchair not only can be used as a walking tool for disabled limbs, but also is an important rehabilitation tool. Common wheelchairs include a wheelchair frame, wheels, a seat rest, a brake device, etc., by means of which a user can perform physical exercises and participate in social activities.

At present, most wheelchairs are simple in function and can meet the use demands of users, but when the situation that roads such as uneven terrain and rough roads are obstructed is encountered, common wheelchairs are difficult to pass, and even by means of help of bystanders, the people are difficult to pass by assistance of the bystanders due to the influence of the weight of the users.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model aims to provide a wheelchair with liftable rear wheels, which solves the problem that users freely pass under the condition that a road is blocked.

The utility model adopts the following technical scheme:

The utility model provides a but rear wheel lifts wheelchair, includes wheelchair frame, back auxiliary wheel and air support, the wheelchair frame includes down the automobile body frame, the automobile body frame includes the mount and with mount swivelling joint's swivel mount down, the end of swivel mount is equipped with back auxiliary wheel, the cylinder section swivelling joint of air support is in on the mount, the flexible section swivelling joint of air support is in on the swivel mount.

Further, the wheelchair comprises a first rotating shaft, a first rotating frame is arranged on the fixing frame, the first rotating shaft is arranged on the first rotating frame, a first connecting piece is fixed at the front end of the cylinder section, and the first connecting piece is sleeved on the first rotating shaft and rotates along with the first rotating shaft on the first rotating frame.

Further, the wheelchair comprises a second rotating shaft, a second rotating frame is arranged at the tail end of the rotating frame, the second rotating shaft is arranged on the second rotating frame, the tail end of the telescopic section is sleeved in the second connecting piece, and the second connecting piece is sleeved on the second rotating shaft and rotates along with the second rotating shaft on the second rotating frame.

Further, one end of the second connecting piece is provided with a sleeve for inserting the telescopic section, the other end of the second connecting piece is provided with a shaft hole for allowing the second rotating shaft to pass through, the middle part of the second connecting piece is provided with a moving groove, a control rod is arranged in the moving groove, the bottom of the control rod is rotatably connected with the second connecting piece, the middle part of the control rod is abutted to the end part of the telescopic section, the control rod moves in the moving groove, and a pulling line is fixed on the control rod.

Further, a third rotating shaft is inserted at the bottom of the control rod, a third rotating hole is formed in the second connecting piece, and the third rotating shaft is inserted in the third rotating hole.

Further, a fourth rotating shaft is inserted into the tail end of the fixing frame, a fourth rotating hole is formed in the front end of the rotating frame, and the fourth rotating shaft is inserted into the fourth rotating hole.

Further, a connecting cylinder is arranged at the tail end of the fixing frame, the fourth rotating shaft is inserted into the connecting cylinder, and a bearing is arranged between the connecting cylinder and the fourth rotating shaft.

Further, a front auxiliary wheel is fixed at the front end of the fixing frame.

Further, the wheelchair comprises a brake handle, and the brake handle is connected with the pulling wire.

Further, the wheelchair comprises two main wheels which are respectively fixed on two sides of the wheelchair frame.

The utility model has the beneficial effects that the rear auxiliary wheel is lifted by arranging the air support, and the wheelchair can easily cross road obstacles by taking the rear auxiliary wheel as a supporting point, thereby being beneficial to the running of the wheelchair on a bumpy road.

Drawings

FIG. 1 is a schematic view of a rear wheel-liftable wheelchair according to the present utility model;

FIG. 2 is a schematic illustration of a portion of the structure of a rear wheel-liftable wheelchair of the present utility model;

FIG. 3 is a second schematic view of a portion of the structure of the rear wheel-liftable wheelchair of the present utility model;

FIG. 4 is a schematic view of a second connector according to the present utility model;

FIG. 5 is a schematic cross-sectional view of a second connector of the present utility model;

fig. 6 is a schematic view of the structure of the second connector and the control lever according to the present utility model.

The wheel chair comprises a wheel chair frame 1, a lower car body frame 2, a fixing frame 21, a rotary frame 22, a rotary frame 23, a fourth rotary hole 3, a rear auxiliary wheel 4, an air support 41, a cylinder section 42, a telescopic section 5, a first rotary shaft 6, a first rotary frame 7, a first connecting piece 8, a second rotary shaft 9, a second rotary frame 10, a second connecting piece 101, a sleeve 102, a shaft hole 103, a moving groove 104, a third rotary hole 11, a control rod 12, a pulling wire 13, a third rotary shaft 14, a fourth rotary shaft 15, a bearing 16, a front auxiliary wheel 17, a main wheel 18 and a connecting cylinder.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described below with reference to the accompanying drawings and embodiments.

The utility model provides a wheelchair with liftable rear wheels, which is shown in figures 1-6, and comprises a wheelchair frame 1, rear auxiliary wheels 3 and an air support 4, wherein the wheelchair frame 1 comprises a lower vehicle body frame 2, the lower vehicle body frame 2 comprises a fixed frame 21 and a rotating frame 22 rotatably connected with the fixed frame 21, the rear auxiliary wheels 3 are arranged at the tail end of the rotating frame 22, an air cylinder section 41 of the air support 4 is rotatably and movably connected with the fixed frame 21, and a telescopic section 42 of the air support 4 is rotatably and movably connected with the rotating frame 22.

The air support 4 comprises an air cylinder section 41 and a telescopic section 42 which is movably telescopic along the air cylinder section 41, and because of rotary movable connection between the fixed frame 21 and the rotary frame 22, when the telescopic section 42 of the air support 4 stretches, the rotary frame 22 can be carried to rotate relative to the fixed frame 21, and because the rear auxiliary wheel 3 is fixed on the rotary frame 22, the rear auxiliary wheel 3 can also rotate, and when the rear auxiliary wheel 3 can change in height, so that different road barriers can be dealt with, and the use scene is wider.

When the wheelchair runs on a smooth road, the length of the telescopic section 42 is adjusted so that the rotating frame 22 and the fixed frame 21 are on the same straight line, at the moment, the rotating frame 22 is used as the extension of the fixed frame 21 and supports the rear auxiliary wheel 3 to run on the smooth road, when the wheelchair runs on a campy road, the length of the telescopic section 42 is reduced so that the rotating frame 22 rotates anticlockwise relative to the fixed frame 21, the rear auxiliary wheel 3 is lifted and the height is increased, the whole wheelchair body can incline backwards by taking the rear auxiliary wheel 3 as a supporting point, and the front wheel of the wheelchair is lifted to easily cross road obstacles.

The wheelchair further comprises a first rotating shaft 5, a first rotating frame 6 is arranged on the fixing frame 21, the first rotating shaft 5 is arranged on the first rotating frame 6, a first connecting piece 7 is fixed at the front end of the cylinder section 41, and the first connecting piece 7 is sleeved on the first rotating shaft 5 and rotates on the first rotating frame 6 along with the first rotating shaft 5. By the above arrangement, rotation of the cylinder section 41 of the air stay 4 with respect to the mount 21 is achieved.

The wheelchair comprises a second rotating shaft 8, the tail end of a rotating frame 22 is provided with a second rotating frame 9, the second rotating shaft 8 is arranged on the second rotating frame 9, the tail end of a telescopic section 42 is sleeved in a second connecting piece 10, and the second connecting piece 10 is sleeved on the second rotating shaft 8 and rotates on the second rotating frame 9 along with the second rotating shaft 8. By the above arrangement, the rotation of the telescopic section 42 of the gas stay 4 with respect to the rotating frame 22 is achieved.

When the air stay 4 stretches and contracts, the rotating frame 22 rotates relative to the fixed frame 21, the rear auxiliary wheel 3 is lifted, and during the lifting process, the angle of the air stay 4 relative to the fixed frame 21 and the rotating frame 22 changes, so that the angle change of the air stay 4 relative to the fixed frame 21 and the rotating frame 22 is adapted through the arrangement of the first rotating shaft 5 and the second rotating shaft 8.

One end of the second connecting piece 10 is provided with a sleeve 101 for inserting the telescopic section 42, the other end is provided with a shaft hole 102 for allowing the second rotating shaft 8 to pass through, the middle part of the second connecting piece 10 is provided with a moving groove 103, a control rod 11 is arranged in the moving groove 103, the bottom of the control rod 11 is rotationally connected with the second connecting piece 10, the middle part of the control rod 11 abuts against the end part of the telescopic section 42, the control rod 11 moves in the moving groove 103, and a pulling wire 12 is fixed on the control rod 11.

Pulling the pulling wire 12, the pulling wire 12 will drive the control rod 11 to rotate relative to the second connecting piece 10, the control rod 11 moves in the moving groove 103, and in the moving process, the control rod 11 contacts against the end of the telescopic section 42 and stretches the telescopic section 42, so as to realize the rotation of the rotating frame 22.

A third rotating shaft 13 is inserted into the bottom of the control rod 11, a third rotating hole 104 is formed in the second connecting piece 10, and the third rotating shaft 13 is inserted into the third rotating hole 104. By the above arrangement, the rotation of the control lever 11 with respect to the second connecting member 10 is achieved.

The end of the fixing frame 21 is inserted with a fourth rotation shaft 14, the front end of the rotation frame 22 is provided with a fourth rotation hole 23, and the fourth rotation shaft 14 is inserted in the fourth rotation hole 23. Further, a connecting tube 18 is provided at the end of the fixing frame 21, the fourth rotation shaft 14 is inserted into the connecting tube 18, and a bearing 15 is provided between the connecting tube 18 and the fourth rotation shaft 14.

The middle part of the fourth rotation shaft 14 is inserted into the connection tube 18, and both ends thereof are inserted into the fourth rotation hole 23.

The front auxiliary wheel 16 is fixed to the front end of the fixing frame 21. The wheelchair comprises main wheels 17, two main wheels 17 are respectively fixed on two sides of the wheelchair frame 1. The rear auxiliary wheel 3, the main wheel 17 and the front auxiliary wheel 16 are matched with each other, so that the road block can be easily crossed.

The wheelchair comprises a brake handle, the brake handle is connected with a pulling wire 12, and the lifting and lifting height of the rear auxiliary wheel 3 is adjusted through a brake handle adjusting control rod 11.

The wheelchair comprises a rotating frame 22, a fixed frame 21, a main wheel 17, a front auxiliary wheel 16, a brake handle, a pulling line 12, a control rod 11, a telescopic section 42, a fixed frame 21, a front auxiliary wheel 16, a rear auxiliary wheel 3, a front auxiliary wheel 16, a rear auxiliary wheel and a connecting piece, wherein the rotating frame 22 and the fixed frame 21 are positioned on the same straight line when the wheelchair runs on a flat road section, the brake handle drives the pulling line 12, the pulling line 12 drives the control rod 11 to rotate relative to the second connecting piece 10, the control rod 11 moves in the moving groove 103 and abuts against the end part of the telescopic section 42 to move in the moving groove 103, the telescopic section 42 is extruded and shortened, the rotating frame 22 rotates relative to the fixed frame 21 at the moment, the rear auxiliary wheel 3 is lifted, the whole vehicle body is supported by a cart body, the whole vehicle body is tilted backwards, and the front auxiliary wheel 16 is tilted backwards, and the wheelchair can easily and conveniently walk over the roadblock.

According to the utility model, the air support 4 is arranged, so that the rear auxiliary wheel 3 is lifted, and the wheelchair can easily cross road obstacles by taking the rear auxiliary wheel 3 as a supporting point, thereby being beneficial to the wheelchair to run on a rough road.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a wheelchair that rear wheel can be lifted, its characterized in that includes wheelchair frame (1), back auxiliary wheel (3) and air support (4), wheelchair frame (1) is including lower automobile body frame (2), lower automobile body frame (2) include mount (21) and with mount (21) swivelling joint's swivel mount (22), the end of swivel mount (22) is equipped with back auxiliary wheel (3), air support (4) cylinder section (41) swivelling joint is in on mount (21), air support (4) telescopic section (42) swivelling joint is in on swivel mount (22).

2. The wheelchair with the liftable rear wheels according to claim 1, characterized in that the wheelchair comprises a first rotating shaft (5), a first rotating frame (6) is arranged on the fixed frame (21), the first rotating shaft (5) is arranged on the first rotating frame (6), a first connecting piece (7) is fixed at the front end of the cylinder section (41), and the first connecting piece (7) is sleeved on the first rotating shaft (5) and rotates on the first rotating frame (6) along with the first rotating shaft (5).

3. The wheelchair with the liftable rear wheels according to claim 1, characterized in that the wheelchair comprises a second rotating shaft (8) and a second connecting piece (10), the tail end of the rotating frame (22) is provided with a second rotating frame (9), the second rotating shaft (8) is arranged on the second rotating frame (9), the tail end of the telescopic section (42) is sleeved in the second connecting piece (10), and the second connecting piece (10) is sleeved on the second rotating shaft (8) and rotates on the second rotating frame (9) along with the second rotating shaft (8).

4. A rear wheel liftable wheelchair according to claim 3, characterized in that one end of the second connecting member (10) is provided with a sleeve (101) for inserting the telescopic section (42), the other end is provided with a shaft hole (102) for passing the second rotating shaft (8), the middle part of the second connecting member (10) is provided with a moving groove (103), the moving groove (103) is internally provided with a control rod (11), the bottom of the control rod (11) is rotationally connected with the second connecting member (10), the middle part of the control rod (11) is abutted against the end part of the telescopic section (42), the control rod (11) moves in the moving groove (103), and the control rod (11) is fixedly provided with a pulling wire (12).

5. The wheelchair with the liftable rear wheels according to claim 4, wherein a third rotating shaft (13) is inserted at the bottom of the control rod (11), a third rotating hole (104) is formed in the second connecting piece (10), and the third rotating shaft (13) is inserted in the third rotating hole (104).

6. The wheelchair with the liftable rear wheels according to claim 1, wherein a fourth rotating shaft (14) is inserted into the tail end of the fixing frame (21), a fourth rotating hole (23) is formed in the front end of the rotating frame (22), and the fourth rotating shaft (14) is inserted into the fourth rotating hole (23).

7. The wheelchair with the liftable rear wheel according to claim 6, wherein the tail end of the fixing frame (21) is provided with a connecting cylinder (18), the fourth rotating shaft (14) is inserted into the connecting cylinder (18), and a bearing (15) is arranged between the connecting cylinder (18) and the fourth rotating shaft (14).

8. A rear wheel liftable wheelchair according to claim 1, characterized in that the front end of the fixed frame (21) is fixed with a front auxiliary wheel (16).

9. A rear wheel liftable wheelchair according to claim 4, characterized in that it comprises a brake handle connected to the pulling wire (12).

10. A rear wheel liftable wheelchair according to claim 1, characterized in that the wheelchair comprises main wheels (17), said main wheels (17) being two and fixed on each side of the wheelchair frame (1).