CN216962843U

CN216962843U - Wheelchair front wheel

Info

Publication number: CN216962843U
Application number: CN202220192200.1U
Authority: CN
Inventors: 王尔琪; 王世军; 张耀革; 陈振中
Original assignee: Zhongjin Medical Devices Taizhou Co ltd
Current assignee: Zhongjin Medical Devices Taizhou Co ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-07-15
Anticipated expiration: 2032-01-24

Abstract

The utility model discloses a front wheel of a wheelchair, which comprises a connecting piece, a front fork hinged with the connecting piece, a damping piece arranged between the connecting piece and the front fork, and a front wheel hinged with the front fork, wherein a limiting groove is formed in the connecting piece, an accommodating groove is formed in the front fork, one end of the damping piece extends into the limiting groove, the other end of the damping piece extends into the accommodating groove, a first inclined surface is arranged on one side, close to the connecting piece, of the front fork, a second inclined surface is arranged on one side, close to the front fork, of the connecting piece, the first inclined surface is abutted against the second inclined surface, and a groove is formed in the bottom of the first inclined surface in an inward inclined mode. According to the wheelchair front wheel, when the wheelchair runs on an uneven road surface, the damping piece is compressed firstly, the first inclined surface is separated from the second inclined surface until the damping piece is reset, the first inclined surface is attached to the second inclined surface, the damping piece cannot be stretched upwards continuously, the stroke of the damping piece is short, so that the wheelchair has a small bumping amplitude and a good damping effect.

Description

Wheelchair front wheel

Technical Field

The utility model relates to the technical field of wheelchairs, in particular to a front wheel of a wheelchair.

Background

At present, the wheelchair is an important tool for rehabilitation, not only is the walking assistant tool for limb disabilities, but also is more important for the people to do physical exercises and participate in social activities by means of the wheelchair. The existing wheelchair comprises a wheelchair main frame, a backrest frame arranged on the wheelchair main frame, a cushion frame arranged on the wheelchair main frame, and a front wheel and a rear wheel which are arranged on the wheelchair main frame, wherein the existing wheelchair front wheel usually uses a spring to absorb shock, but the stroke of the spring cannot be controlled, so that the bumping amplitude of the wheelchair is large, and the shock absorption effect is poor.

SUMMERY OF THE UTILITY MODEL

Therefore, a wheelchair front wheel with good shock absorption effect is needed.

The technical scheme adopted by the utility model for solving the technical problem is as follows: the utility model provides a wheelchair front wheel, the wheelchair front wheel include the connecting piece, with connecting piece articulated front fork, setting are in the connecting piece with shock attenuation between the front fork and with the front wheel of the articulated setting of front fork, the spacing groove has been seted up on the connecting piece, the holding tank has been seted up on the front fork, the one end of shock attenuation stretches into extremely in the spacing groove, the other end of shock attenuation stretches into extremely in the holding tank, the front fork is close to one side of connecting piece is first inclined plane, the connecting piece is close to one side of front fork is the second inclined plane, first inclined plane with the counterbalance of second inclined plane is held, the bottom leanin of first inclined plane is formed with the groove.

Furthermore, an included angle formed between the groove and the first inclined plane is alpha, and alpha is more than or equal to 5 degrees and less than or equal to 20 degrees.

Further, α is 14 °.

Furthermore, the connecting piece comprises a fixing part and a supporting part which are connected with each other, the supporting part is rotatably connected with the front fork, the limiting groove is arranged at the bottom of the supporting part, and the second inclined plane is arranged on the supporting part.

Further, the front fork comprises a hinge portion and a rotating portion which are connected with each other, the front wheel is hinged to the hinge portion, the rotating portion is hinged to the abutting portion, the accommodating groove is formed in the top of the hinge portion, and the first inclined surface is arranged on the rotating portion.

Furthermore, the wheelchair front wheel also comprises a hinged rod, a bushing and a screw rod, the bushing is arranged on the abutting portion, and the hinged rod sequentially penetrates through the rotating portion, the bushing and the abutting portion and then is in threaded connection with the screw rod.

Further, the wheelchair front wheel still includes the standpipe, standpipe and wheelchair body frame rotatable coupling, the fixed part with standpipe fixed connection.

Furthermore, a groove is formed in the top of the fixing portion, one end of the vertical pipe extends into the groove, and the vertical pipe is fixedly connected with the groove.

Further, the shock absorbing member is a rubber block.

The utility model has the beneficial effects that: according to the wheelchair front wheel provided by the utility model, when the wheelchair runs on an uneven road surface, the damping piece is compressed firstly, at the moment, the first inclined surface is separated from the second inclined surface until the damping piece is reset, at the moment, the first inclined surface is attached to the second inclined surface, the damping piece cannot be stretched upwards continuously, the stroke of the damping piece is short, so that the bumping amplitude of the wheelchair is small, and the damping effect is good.

Drawings

The utility model is further illustrated by the following figures and examples.

FIG. 1 is a schematic structural view of a wheelchair front wheel of the present invention;

FIG. 2 is an exploded view of the front wheel of the wheelchair of FIG. 1;

FIG. 3 is a cross-sectional view of the front wheel of the wheelchair of FIG. 1;

figure 4 is a cross-sectional view of the front fork of the front wheel of the wheelchair of figure 1.

The names and the numbers of the parts in the figure are respectively as follows:

fixing part 21 of vertical pipe 1 connecting piece 2

Front fork 3 hinge part 31 of holding part 22

Second inclined surface 220 shock absorbing member 4 of rotating part 32

Bevel 322 front wheel 5 groove 212

Hinge rod 61 bushing 62 screw 63

First inclined plane 320

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.

Referring to fig. 1 to 4, the present invention provides a wheelchair front wheel, for being mounted on a wheelchair main frame, the wheelchair front wheel comprises a vertical tube 1, a connecting member 2, a front fork 3, a shock absorbing member 4 and a front wheel 5, the vertical tube 1 is rotatably connected with the wheelchair main frame, the connecting member 2 is fixedly connected with the vertical tube 1, the front fork 3 is rotatably connected with the connecting member 2, the shock absorbing member 4 is disposed between the connecting member 2 and the front fork 3, and the front wheel 5 is rotatably disposed on the front fork 3.

The connecting piece 2 comprises a fixing part 21 and a propping part 22 which are connected with each other, the vertical tube 1 is fixedly connected with the fixing part 21, and the propping part 22 is rotatably connected with the front fork 3. Furthermore, a groove 212 is formed at the top of the fixing portion 21, one end of the vertical tube 1 extends into the groove 212, and the vertical tube 1 is fixedly connected with the groove 212.

The front fork 3 comprises a hinge part 31 and a rotating part 32 which are connected with each other, the front wheel 5 is hinged with the hinge part 31, the abutting part 22 is hinged with the rotating part 32, concretely, the front wheel of the wheelchair further comprises a hinge rod 61, a lining 62 and a screw 63, the lining 62 is arranged on the abutting part 22, and the hinge rod 61 is in threaded connection with the screw 63 after sequentially passing through the rotating part 32, the lining 62 and the abutting part 22. The bush 62 is provided so that the abutting portion 22 can be protected when the abutting portion 22 and the rotating portion 32 rotate.

Damping member 4 sets up between holding portion 22 and articulated portion 31, specifically, spacing groove 221 has been seted up to the bottom of fixed part 21, holding tank 311 has been seted up at the top of articulated portion 31, spacing groove 221 sets up with holding tank 311 relatively, the one end of damping member 4 stretches into to spacing groove 221 in, and the tank bottom wall fixed connection of damping member 4 and spacing groove 221, the other end of damping member 4 stretches into to holding tank 311 in, and the tank bottom wall fixed connection of damping member 4 and holding tank 311. In the present embodiment, the damper 4 is a rubber block. In other embodiments, not shown, the damping member 4 may also be a silicone block or a spring.

Further, one side of the rotating portion 32 close to the abutting portion 22 is a first inclined surface 320, one side of the abutting portion 22 close to the rotating portion 32 is a second inclined surface 220, the first inclined surface 320 abuts against the second inclined surface 220, a groove 322 is formed at the bottom of the first inclined surface 320 in an inward inclined manner, an included angle formed between the groove 322 and the first inclined surface 320 is α, α is greater than or equal to 5 degrees and is less than or equal to 20 degrees, and in the present embodiment, α is greater than or equal to 14 degrees. The groove 322 is provided, and one end of the abutting portion 22 away from the fixing portion 21 abuts against the groove bottom wall of the abutting groove 321, so that the rotating portion 32 can only rotate towards the direction close to the abutting portion 22, and the rotating portion 32 rotates towards the direction away from the abutting portion 22, which may interfere with each other.

When the wheelchair runs on an uneven road surface, the shock absorbing member 4 is compressed firstly, at the moment, the first inclined surface 320 is separated from the second inclined surface 220 until the shock absorbing member 4 is reset, at the moment, the first inclined surface 320 is attached to the second inclined surface 220, and the shock absorbing member 4 cannot be stretched upwards continuously.

According to the wheelchair front wheel provided by the utility model, when the wheelchair runs on an uneven road surface, the damping part 4 is compressed at first, at the moment, the first inclined surface 320 is separated from the second inclined surface 220 until the damping part 4 is reset, at the moment, the first inclined surface 320 is attached to the second inclined surface 220, the damping part 4 cannot be continuously stretched upwards, and the stroke of the damping part 4 is shorter, so that the bumping amplitude of the wheelchair is smaller, and the damping effect is better.

In light of the foregoing description of preferred embodiments in accordance with the utility model, it is to be understood that numerous changes and modifications may be made by those skilled in the art without departing from the scope of the utility model. The technical scope of the present invention is not limited to the content of the description, and the technical scope must be determined according to the scope of the claims.

Claims

1. A wheelchair front wheel characterized in that: the wheelchair front wheel includes the connecting piece, with connecting piece articulated front fork, setting are in the connecting piece with shock attenuation piece between the front fork and with the front wheel of the articulated setting of front fork, the spacing groove has been seted up on the connecting piece, the holding tank has been seted up on the front fork, the one end of shock attenuation piece stretches into extremely in the spacing groove, the other end of shock attenuation piece stretches into extremely in the holding tank, the front fork is close to one side of connecting piece is first inclined plane, the connecting piece is close to one side of front fork is the second inclined plane, first inclined plane with the counterbalance of second inclined plane is held, the bottom leanin on first inclined plane is formed with the groove.

2. The wheelchair front wheel of claim 1, wherein: an included angle formed between the groove and the first inclined plane is alpha, and alpha is more than or equal to 5 degrees and less than or equal to 20 degrees.

3. The wheelchair front wheel of claim 2, wherein: α is 14 °.

4. The wheelchair front wheel of claim 1, wherein: the connecting piece comprises a fixing part and a supporting part which are connected with each other, the supporting part is rotatably connected with the front fork, the limiting groove is arranged at the bottom of the supporting part, and the second inclined plane is arranged on the supporting part.

5. The wheelchair front wheel of claim 4, wherein: the front fork comprises a hinged part and a rotating part which are connected with each other, the front wheel is hinged to the hinged part, the rotating part is hinged to the abutting part, the accommodating groove is formed in the top of the hinged part, and the first inclined surface is arranged on the rotating part.

6. The wheelchair front wheel of claim 5, wherein: the wheelchair front wheel further comprises a hinge rod, a bushing and a screw rod, the bushing is arranged on the abutting portion, and the hinge rod sequentially penetrates through the rotating portion, the bushing and the abutting portion and then is in threaded connection with the screw rod.

7. The wheelchair front wheel of claim 4, wherein: the wheelchair front wheel still includes the standpipe, standpipe and wheelchair body frame rotatable coupling, the fixed part with standpipe fixed connection.

8. The wheelchair front wheel of claim 7, wherein: the top of the fixing part is provided with a groove, one end of the vertical pipe extends into the groove, and the vertical pipe is fixedly connected with the groove.

9. The wheelchair front wheel of claim 1, wherein: the shock-absorbing part is a rubber block.