CN215385277U

CN215385277U - Size-adjustable wheelchair

Info

Publication number: CN215385277U
Application number: CN202121221429.5U
Authority: CN
Inventors: 赵键荣
Original assignee: Foshan Yikang Medical Technology Co ltd
Current assignee: Foshan Yikang Medical Technology Co ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2022-01-04
Anticipated expiration: 2031-06-02

Abstract

A size-adjustable wheelchair comprises universal wheels, large wheels and a chair frame, wherein the universal wheels are mounted at the front end of the chair frame; the chair frame comprises a supporting rod arranged at the rear end of the chair frame, wherein the supporting rod is of a cylindrical structure; the support rod is provided with at least three first positioning holes which are arranged in an array along the extending direction of the support rod in advance; the locking device also comprises an adjusting block and a locking assembly, wherein the adjusting block comprises an integrally formed wheel connecting part and a rod connecting part in a cylindrical structure; the large wheel is connected to the wheel connecting part; the rod connecting part is sleeved on the supporting rod in a sliding manner; the locking assembly is used for fixing the rod connecting part and the supporting rod to each other; the height of the wheelchair can be adjusted by enabling the adjusting block to slide up and down along the supporting rod in a reciprocating manner; the distance between the large wheel and the universal wheel can be adjusted by enabling the adjusting block to turn back and forth in a reciprocating manner along the circumferential direction of the supporting rod.

Description

Size-adjustable wheelchair

Technical Field

The utility model relates to the technical field of wheelchairs, in particular to a size-adjustable wheelchair.

Background

The wheelchair is a chair provided with wheels and capable of replacing walking, and is an important moving tool for walking of patients with limb disabilities. Generally, the height and weight of different patients are different, and therefore, the sizes of wheelchairs (wheelbases and heights of wheelchairs) used by different patients are different. At present, referring to fig. 8, the sizes of most wheelchairs cannot be adjusted, so that wheelchairs with different sizes can only be designed and produced to meet different patients, the sizes of the wheelchairs are various, and the patients cannot adjust the sizes of the wheelchairs when the sizes of the wheelchairs need to be adjusted, so that the wheelchairs are inconvenient to use.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies of the prior art, it is an object of the present invention to provide a wheelchair with adjustable dimensions.

In order to achieve the purpose, the utility model provides a size-adjustable wheelchair, which comprises universal wheels, large wheels and a chair frame, wherein the universal wheels are arranged at the front end of the chair frame; the chair frame comprises a supporting rod arranged at the rear end of the chair frame, wherein the supporting rod is of a cylindrical structure; the support rod is provided with at least three first positioning holes which are arranged in an array along the extending direction of the support rod in advance; the locking device also comprises an adjusting block and a locking assembly, wherein the adjusting block comprises an integrally formed wheel connecting part and a rod connecting part in a cylindrical structure; the large wheel is connected to the wheel connecting part; the rod connecting part is sleeved on the supporting rod in a sliding manner; the locking assembly is used for fixing the rod connecting part and the supporting rod to each other.

Further, at least two second positioning holes are preset in the rod connecting part.

Furthermore, the locking assembly comprises at least two bolts, and each bolt is used for simultaneously clamping a first positioning hole and a second positioning hole.

Further, the bull wheel is hinged with a screw rod, and the bull wheel is connected to the wheel connecting part through the screw rod.

Furthermore, the chair frame further comprises an upper chair rod, two third positioning holes are preset in the upper chair rod, and the two third positioning holes are arranged in the front and back direction along the length direction of the chair frame.

Furthermore, the brake assembly with the adjustable front and rear positions comprises an installation block fixedly connected with a third positioning hole and a brake connecting handle fixedly connected with the installation block.

The utility model has the beneficial effects that: the height of the wheelchair can be adjusted by enabling the adjusting block to slide up and down along the supporting rod in a reciprocating manner; the distance between the large wheel and the universal wheel can be adjusted by enabling the adjusting block to turn back and forth in a reciprocating manner along the circumferential direction of the supporting rod.

Drawings

Figure 1 is a schematic view of a wheelchair.

Fig. 2 is a front view of the adjustment block.

Fig. 3 is a top view of the adjustment block.

Fig. 4 is a partial view a of the adjusting block after being turned over backward or moved downward.

Fig. 5 is a partial view a of the adjusting block after it is turned over or moved upward.

Fig. 6 is a partial view a of the adjusting block after it has been flipped forward or moved downward.

Fig. 7 is a partial B view of the adjusting block turned backwards.

Figure 8 is a schematic view of a prior art wheelchair.

The chair comprises a chair frame 1, a universal wheel 2, a big wheel 3, a screw rod 31, a support rod 4, a first positioning hole 41, an adjusting block 5, a rod connecting part 51, a second positioning hole 511, a wheel connecting part 52, a bolt 6, a chair rod 7, a third positioning hole 71, a brake component 8, an installation block 81 and a brake connecting handle 82.

Detailed Description

To facilitate an understanding of the utility model, the utility model is described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1 to 6, in the present embodiment, a size-adjustable wheelchair includes a universal wheel 2, a large wheel 3, a frame 1, an adjusting block 5, and a locking assembly, wherein the universal wheel 2 is mounted at the front end of the frame 1. The chair frame 1 comprises an upper chair rod and a support rod 4 arranged at the rear end of the chair frame 1, wherein the support rod 4 is cylindrical, and five first positioning holes 41 arranged in an array along the extending direction of the support rod 4 are preset in the support rod 4. The support rods 4 are arranged vertically. The adjusting block 5 comprises an integrally formed wheel connecting part 52 and a rod connecting part 51 with a cylindrical structure, wherein the rod connecting part 51 is sleeved on the supporting rod 4 in a sliding manner, so that the adjusting block 5 can slide up and down along the supporting rod 4 in a reciprocating manner, and the adjusting block 5 is overturned back and forth along the circumferential direction of the supporting rod 4 in a reciprocating manner. The circumference center of bull wheel 3 articulates there is a screw rod 31, and bull wheel 3 passes through screw rod 31 to be connected in wheel connecting portion 52 for bull wheel 3 can be dismantled separately with wheel connecting portion 52, and, makes the centre of a circle position of bull wheel 3 arrange in wheel connecting portion 52, makes the distance between bull wheel 3 and universal wheel 2 be the distance between the rotation center of wheel connecting portion 52 and universal wheel 2.

In the present embodiment, three second positioning holes 511 arranged in an array along the extending direction of the wheel connecting portion 52 are preset in the wheel connecting portion 52, wherein the pitch of each second positioning hole 511 is the same as the pitch of each first positioning hole 41, so that the three second positioning holes 511 can be aligned with any three adjacent first positioning holes 41. The locking assembly comprises three bolts 6, wherein each bolt 6 is used for simultaneously clamping a first positioning hole 41 and a second positioning hole 511. When each bolt 6 is simultaneously clamped with a first positioning hole 41 and a second positioning hole 511, the adjusting block 5 and the support rod 4 are fixedly connected with each other.

Referring to fig. 4 to 6, in the present embodiment, when the wheelchair needs to be adjusted in size: the large wheel 3 and the wheel connecting part 52 need to be detached firstly, and then the three bolts 6 are detached, so that the adjusting block 5 can slide up and down in a reciprocating manner or turn over back and forth in a reciprocating manner, and the adjusting block 5 is in an adjustable state. When the adjusting block 5 is in an adjustable state, the adjusting block 5 is turned forwards, so that the direction of the wheel connecting part 52 is forward, and the distance between the large wheel 3 and the universal wheel 2 is reduced; the adjusting block 5 is turned backwards, so that the direction of the wheel connecting part 52 faces backwards, and the distance between the large wheel 3 and the universal wheel 2 is increased; the adjusting block 5 is slid upwards, so that the height of the wheelchair is reduced; the adjustment block 5 is slid down so that the height of the wheelchair is raised. After the adjustment of the adjustment block 5 is completed, the adjustment block 5 and the support rod 4 are fixedly connected to each other again by the three bolts 6, and then the large wheel 3 is connected to the wheel connecting portion 52 again, that is, the adjustment of the large wheel 3 is completed.

Referring to fig. 7, in the present embodiment, two third positioning holes 71 are preset in the upper seat bar 7, wherein the two third positioning holes 71 are arranged in the front-back direction along the length direction of the seat frame 1.

Referring to fig. 7, in the present embodiment, the seat back further includes a brake assembly 8, the brake assembly 8 includes a mounting block 81 and a brake connecting handle 82 fixedly connected to the mounting block 81, wherein the mounting block 81 is bolted and fixedly connected to one of the third positioning holes 71, so that the brake assembly 8 is fixedly mounted on the upper seat post 7. When the direction of the wheel connecting part 52 is forward and the distance between the big wheel 3 and the universal wheel 2 is reduced, the mounting block 81 is connected with the third positioning hole 71 which is positioned forward, so that the position of the brake assembly 8 moves forward; when the wheel connecting part 52 faces backwards and the distance between the large wheel 3 and the universal wheel 2 increases, the mounting block 81 is connected with the third positioning hole 71 at the rear position, so that the position of the brake assembly 8 moves backwards. The front and back movement of the brake assembly 8 is adjusted by matching the brake assembly 8 with the wheel connecting part 52, so that the brake assembly 8 can be adjusted along with the adjustment of the large wheel 3, and the original brake effect of the brake assembly 8 can be still kept after the large wheel 3 is adjusted.

The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to limit the present invention in any way. Those skilled in the art can make many changes, modifications, and equivalents to the embodiments of the utility model without departing from the scope of the utility model as set forth in the claims below. Therefore, equivalent changes made according to the spirit of the present invention should be covered within the protection scope of the present invention without departing from the contents of the technical scheme of the present invention.

Claims

1. The utility model provides a size adjustable wheelchair, including universal wheel (2), bull wheel (3) and chair frame (1), wherein, universal wheel (2) install in the front end of chair frame (1), its characterized in that: the chair frame (1) comprises a supporting rod (4) arranged at the rear end of the chair frame (1), wherein the supporting rod (4) is of a cylindrical structure; at least three first positioning holes (41) which are arranged in an array mode along the extending direction of the supporting rod (4) are preset in the supporting rod (4); the locking device also comprises an adjusting block (5) and a locking assembly, wherein the adjusting block (5) comprises an integrally formed wheel connecting part (52) and a rod connecting part (51) in a cylindrical structure; the large wheel (3) is connected to the wheel connecting part (52); the rod connecting part (51) is sleeved on the support rod (4) in a sliding manner; the locking assembly is used for fixing the rod connecting part (51) and the supporting rod (4) to each other.

2. A size-adjustable wheelchair in accordance with claim 1, wherein: at least two second positioning holes (511) are preset in the rod connecting part (51).

3. A size-adjustable wheelchair in accordance with claim 2, wherein: the locking assembly comprises at least two bolts (6), and each bolt (6) is used for being clamped with a first positioning hole (41) and a second positioning hole (511) simultaneously.

4. A size-adjustable wheelchair in accordance with claim 1, wherein: the bull wheel (3) is hinged with a screw rod (31), and the bull wheel (3) is connected to the wheel connecting part (52) through the screw rod (31).

5. A size-adjustable wheelchair in accordance with claim 1, wherein: the chair frame (1) further comprises an upper chair rod (7), two third positioning holes (71) are preset in the upper chair rod (7), and the two third positioning holes (71) are arranged in the front-back direction along the length direction of the chair frame (1).

6. A size-adjustable wheelchair in accordance with claim 5, wherein: the brake assembly (8) is adjustable in front and back position and comprises an installation block (81) used for being fixedly connected with one third positioning hole (71) and a brake connecting handle (82) fixedly connected with the installation block (81).