WO2016015617A1

WO2016015617A1 - Spoke-type wheel without inner tube

Info

Publication number: WO2016015617A1
Application number: PCT/CN2015/085251
Authority: WO
Inventors: 曹文彪
Original assignee: 上海康适达轮圈有限公司
Priority date: 2014-07-28
Filing date: 2015-07-28
Publication date: 2016-02-04

Abstract

A spoke-type wheel without an inner tube, comprising a tyre (1), a rim (2) and a hub; the rim (2) is connected to the hub via a plurality of spokes (4); the tyre (1) is installed on the rim (2) provided with a first groove (21) at the middle portion thereof; two sides of the first groove (21) are respectively provided with a second groove (22); the rim (2) is attached with a sealing piece (3) thereon; the sealing piece (3) comprises a body part (31) and wing parts (32) located at two ends of the body part (31); a convex part (33) is provided below each wing part (32); the body part (31) is attached to the first groove (21); the convex part (33) has an interference fit with the second groove (22); and the wing part (32) is embedded between the tyre (1) and the rim (2). The wheel has a good sealing performance and a low cost, and is convenient to replace a component, and convenient to manufacture, machine and install.

Description

Spoke-type tubeless wheel

This application claims priority from Chinese patent application CN201410363056.3 and CN201420419915.1 on July 28, 2014. This application cites the entire text of the above-mentioned Chinese patent application.

Technical field

The invention relates to a spoke type tubeless wheel.

Background technique

Tubeless tires, commonly known as vacuum tires, were originally used primarily in automobiles, mainly for molded wheels. The wire spoke wheels used in motorcycles are not provided with fixed steel wire spokes, and the sealing performance is not guaranteed. Therefore, most of the steel wire spoke wheels use tires with inner tubes. With the development of technology, tubeless tires are gradually applied to steel spoke wheels.

The Chinese invention patent of the authorization publication number CN100588561C discloses a tubeless rim and a method of manufacturing the same. The left and right sides of the groove of the tubeless rim are respectively welded to the side wall of the convex portion, and the left and right sides of the sealing material are conveniently arranged to be buckled, the main body is bent, the root edge is warped, and the front side is curved. A limiting buckle plate for the buckled elbow which is bent toward the lower side of the groove on the edge of the portion. Since the limit buckle plate needs to be welded to the rim, the manufacturing process becomes complicated in the manufacturing process, and the manufacturing cost thereof also needs to be increased; in the course of use, the limit buckle plate is easily detached, resulting in Steel spokes pierce the tires and cause safety hazards to the vehicle; in addition, if the sealing material needs to be replaced or the spokes are replaced, the limit buckle plate needs to be pulled apart. Therefore, the tubeless rim is not suitable for multiple replacement of sealing materials or spokes. .

The Chinese utility model patent of the authorization publication number CN202753690U discloses a tubeless rim. The tubeless rim is provided with a protruding tapered portion, and the two fork ends of the end portion of the sealing member are respectively disposed at upper and lower portions of the protruding tapered portion. The arrangement of the protruding taper portion complicates the manufacturing process and increases the manufacturing cost; the seal member needs to be respectively sleeved on the upper and lower portions of the protruding taper portion, thereby improving the The difficulty of wheel mounting increases the time cost of the worker and makes it difficult to replace seals and spokes.

Summary of the invention

The technical problem to be solved by the present invention is to provide a spoke-type tubeless wheel in order to overcome the drawbacks of the prior art that the manufacturing process is complicated, the manufacturing cost is high, and the replacement parts are troublesome.

The present invention solves the above technical problems by the following technical solutions:

A spoke type tubeless wheel comprising a tire, a rim and a hub, the rim and the hub being connected by a plurality of spokes, the tire being sleeved on the rim, characterized in that the rim is a sealing member is disposed, a first groove is disposed in the middle of the rim, and a second groove is disposed on each side of the first groove, the sealing member includes a body portion and the body portion a wing portion at each end of each of the wing portions is provided with a protruding portion, the body portion is attached to the first groove, and the protruding portion is interference-fitted with the second groove. The wing is embedded between the tire and the rim.

The body portion of the sealing member is in contact with the first groove. Under the elastic force of the sealing member, the protruding portion and the second groove are interference-fitted, and the protruding portion is pressed and embedded in the second groove. The wings on both sides of the seal are disposed between the tire and the hub such that a sealed tire space is formed between the tire and the seal. After inflation, the sealed tire space has good sealing properties.

Preferably, the sealing member is provided with a transition portion between the body portion and the wing portion, and the transition portion is an arc-shaped protrusion. The effect of the arcuate projections is equivalent to the action of the rim peaks. The presence of the rim peaks allows the sealing strip and the tire (ie the casing) to fit better together.

Preferably, the wings are inclined downward from the end connected to the transition portion by 3 to 10 degrees. The downward tilting of the wings improves the degree of sealing between the seal, the tire and the rim, thereby improving the sealing performance of the tire.

Preferably, the wings are inclined downward by 5 from the end connected to the transition. Experimental data shows that the tire seal is best when the wing is tilted down by 5°.

Preferably, the first groove is a U-shaped groove, and the second groove is a V-shaped groove, and the two The two grooves are symmetrically distributed on both sides of the first groove, and the protrusion is V-shaped. The first groove is a U-shaped groove, which is easy to process, and at the same time, it has a long bonding surface with the sealing member, which helps to improve the sealing performance. The second groove and the projection are both V-shaped grooves, which are easy to process and easy to install, and the interference fit between the two helps to improve the sealing performance of the wheel.

Preferably, the angle of the V-shaped groove of the second groove is 15° to 25°, and the angle of the V-shaped protrusion of the protrusion is 30° to 50°. The experimental data shows that when the foregoing angle is adopted, the second groove has a good fit with the protrusion, which helps to improve the sealing performance.

Preferably, the angle of the V-shaped groove of the second groove is 20°, and the angle of the V-shaped protrusion of the protrusion is 40°. The experimental data shows that the sealing performance of the tire is optimal when the second groove and the projection are respectively used at the aforementioned angles.

The positive progressive effect of the invention is that the sealed tire space of the wheel of the invention has good sealing performance, and the longer the use time, the better the sealing performance; in addition, the wheel of the invention has low cost, convenient manufacturing and installation. And the convenience of replacing parts.

DRAWINGS

1 is a schematic structural view of a preferred embodiment of the present invention.

2 is a schematic structural view of a rim according to a preferred embodiment of the present invention.

3 is a schematic view showing the structure of a sealing member attached to a rim according to a preferred embodiment of the present invention.

detailed description

The invention will be described more clearly and fully hereinafter with reference to the accompanying drawings.

As shown in FIG. 1, FIG. 2 and FIG. 3, a spoke type tubeless wheel includes a tire 1, a rim 2 and a hub, the rim 2 and the hub are connected by a plurality of spokes 4, and the tire 1 is sleeved on the rim 2, the rim 2, a sealing member 3 is attached thereto, and a first groove 21 is disposed in the middle of the rim 2, and a second groove 22 is disposed on each side of the first groove 21, and the sealing member 3 includes a body portion 31 and is located at the body portion 31. The wing portions 32 at both ends of each of the wing portions 32 are respectively provided with protrusions 33, and the body portion 31 is attached to the first groove 21, the projection 33 is interference-fitted with the second recess 22, and the wing 32 is embedded between the tire 1 and the rim 2.

The material of the seal is generally rubber, which has a certain elasticity, usually a rubber ring. When installing, put the seal on the hub and put the tire on. The rim is provided with a first groove and a second groove, which are convenient to process and low in cost. Therefore, the wheel of the present invention has the advantages of low cost, convenient manufacturing and installation.

The body portion of the sealing member is in contact with the first groove. Under the elastic force of the sealing member, the protruding portion and the second groove are interference-fitted, and the protruding portion is pressed and embedded in the second groove. The wings on both sides of the seal are disposed between the tire and the rim such that a closed tire space 5 is formed between the tire and the seal. After inflation, the sealed tire space 5 has good sealing properties.

Since the tire and the seal are made of rubber, the contact portion between the two will be partially fused as the use time is extended. Therefore, the longer the use time of the wheel of the present invention, the better the sealing performance of the closed tire space, and the drawback that the longer the use of the existing tire is, the worse the sealing performance is.

When it is necessary to replace the seal, it is only necessary to remove the seal, and since the seal is simply attached to the rim, the wheel of the present invention has the advantage of being convenient to replace the part.

As shown in FIG. 3, the sealing member 3 is provided with a transition portion 34 between the body portion 31 and the wing portion 32, and the transition portion 34 is an arcuate projection. The effect of the arcuate projections is equivalent to the action of the rim peaks. The presence of the rim peaks allows the sealing strip and the tire (ie the casing) to fit better together.

The wing portion 32 is inclined downward from the end connected to the transition portion 34 by 3 to 10 degrees. The experimental data shows that when the wings are inclined downward by 3° to 10°, the sealing performance of the closed tire space is stronger than that of the wing when the angle is other inclined angles. The sealing performance test was carried out for different angles between the inclination angles of the wings of 3° to 10°. The final experimental data showed that the sealed tire space had the best sealing performance when the wings were inclined downward by 5°.

As shown in FIG. 2, the first groove 21 may be a U-shaped groove, and the second groove 22 may be a V-shaped groove, and the two second grooves 22 may be symmetrically distributed on both sides of the first groove 21, and the protrusion 33 can be V type The angle of the V-shaped groove of the second groove 22 may be 20°, and the angle of the V-shaped protrusion of the protrusion 33 may be 40°. The second groove and the projection are both V-shaped grooves, which are easy to process and easy to install, and the interference fit between the two helps to improve the sealing performance of the wheel. In addition, the experimental data shows that the tire has the best sealing performance when the second groove and the projection are 20° and 40°, respectively.

While the invention has been described with respect to the preferred embodiments of the embodiments of the embodiments of the invention modify. Accordingly, the scope of the invention is defined by the appended claims.

Claims

A spoke type tubeless wheel comprising a tire, a rim and a hub, the rim and the hub being connected by a plurality of spokes, the tire being sleeved on the rim, wherein the rim is on the rim a sealing member is disposed, a first groove is disposed in the middle of the rim, and a second groove is disposed on each side of the first groove, the sealing member includes a body portion and the body portion a wing portion at each end of each of the wing portions is provided with a protruding portion, the body portion is attached to the first groove, and the protruding portion is interference-fitted with the second groove. The wing is embedded between the tire and the rim.
A spoke-type tubeless wheel according to claim 1, wherein said seal member is provided with a transition portion between said body portion and said wing portion, said transition portion being an arcuate projection.
A spoke-type tubeless wheel according to at least one of claims 1 to 2, wherein the wing portion is inclined downward by 3 to 10 from an end connected to the transition portion.
A spoke-type tubeless wheel according to claim 3, wherein said wing portion is inclined downward by 5 from an end connected to said transition portion.
The spoke-type tubeless wheel according to any one of claims 1 to 4, wherein the first groove is a U-shaped groove, the second groove is a V-shaped groove, and the two of the second The grooves are symmetrically distributed on both sides of the first groove, and the protrusions are V-shaped.
The spoke-type tubeless wheel according to claim 5, wherein the angle of the V-shaped groove of the second groove is 15° to 25°, and the angle of the V-shaped protrusion of the protrusion is 30 ° ~ 50 °.
The spoke-type tubeless wheel according to claim 6, wherein the angle of the V-shaped groove of the second groove is 20°, and the angle of the V-shaped protrusion of the protrusion is 40°.