JPH0911705A - Motorcycle tire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motorcycle tire which can maintain airtightness with a simple structure without affecting a wheel itself and whose assemblability also is improved. SOLUTION: As for the tire 1 of a motorcycle, the bead sheet parts 1a of the tire 1 are applied to a rim 3 provided with a spoke 4, and an annular band 5 having flexibility is integrally coupled onto the inside of each bead sheet part 1a, and an air chamber 6 having airtightness is formed with the tire 1 and the band 5, and in addition a valve to inject air into the air chamber 6 is provided at the band 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic two-wheeled vehicle tire.

[0002]

2. Description of the Related Art As a tire for a motorcycle, there is, for example, a tubeless tire. This tubeless tire is mounted by applying a bead seat portion of the tire to a rim of a wheel, and a valve for inflating air is directly attached to the rim.

[0003]

By the way, when a tubeless tire is used in a wire spoke wheel, for example, a gap is formed in a portion of a rim where a spoke is provided and a portion where a valve is provided, so that the structure is made to maintain airtightness. It is necessary, costly and cumbersome to assemble, and in some cases the wheel itself must be restructured.

The present invention has been made in view of the above point, and it is possible to maintain the airtightness with a simple structure without affecting the wheel itself and to improve the assembling property. Is intended to provide.

[0005]

In order to solve the above-mentioned problems and to achieve the object, a two-wheeled vehicle tire according to the invention has a bead seat portion, which is applied to a rim provided with spokes. In the inside of the bead seat portion, a flexible annular band is integrally joined, and an air chamber having airtightness is formed between the tire and the band, and further, the air chamber is formed in the band. It is characterized in that a valve for injecting air is provided.

[0006]

According to the first aspect of the invention, a flexible annular band is integrally connected to the inside of the bead seat portion of the tire to form an airtight air chamber between the tire and the band. Air is injected into the air chamber through a valve provided on the band.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a tire for a motorcycle according to the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a spoke mounting portion of a tire of a motorcycle, and FIG. 2 is a sectional view of a valve mounting portion of a tire of a motorcycle.

A motorcycle tire 1 is mounted on a wire spoke wheel 2, and the tire 1 has an inner liner called an inner liner, which has a highly airtight layer and prevents a sudden air leak even if a nail or the like is stuck. It is a so-called tubeless tire provided. Through holes X of the spokes 4 are provided in the rim 3 of the wire spoke wheel 2, and the nipples 4a are inserted into the through holes X from the inside of the rim 3 and screwed into the spoke bodies 4c. An annular rim band 10 is attached so as to cover the head 4b of the nipple 4a. Both ends 3 of the rim 3 provided with the spokes 4
The tire 1 is attached to a by applying the bead seat portion 1a. Inside the bead seat portion 1a of the tire 1, for example, both end portions 5a of a rubber-like flexible annular band 5 are bonded and integrated integrally along the entire circumference, and the tire 1 and the band 5 are airtight. Is formed.
Further, the band 5 is provided with a valve 7 for injecting air into the air chamber 6. The valve 7 is inserted into the mounting hole 3b of the rim 3 and is fixed by tightening with a nut 8.
The rim band 10 prevents contact between the head portion 4b of the nipple 4a and the band 5.

Thus, the bead seat portion 1 of the tire 1
A flexible annular band 5 is joined and integrated inside a, and an air chamber 6 having airtightness is formed between the tire 1 and the band 5, and a valve 7 provided in the band 5 to an air chamber 6 Inject air into.

For this reason, it is not necessary to have a structure for maintaining special airtightness so as to prevent a gap from being formed in the portion where the nipple 4a of the spoke 4 of the rim 3 and the valve 7 are provided, and the cost is low. Further, while inserting the valve 7 from the inside of the rim 3 into the mounting hole 3b at a predetermined position and deforming the annular band 5 inward of the tire 1, the tire 1 is fitted inside the rim 3 and the bead seat portion is formed. 1a is applied to the rim 3 and the wire spoke wheel 2 does not need to be touched, so that it can be used as a wheel equipped with a general tire having a tube, for example. Further, the nut 8 only has to be fixed by tightening, and the assemblability is improved.

[0011]

As described above, according to the first aspect of the invention, a flexible annular band is integrally joined inside the bead seat portion of the tire to provide airtightness between the tire and the band. Since the air chamber is formed, and the band is provided with a valve for injecting air into the air chamber, the bead seat by fitting the tire inside the rim while deforming the annular band inward of the tire. Since it does not need to be touched on the rim and the wire spoke wheel does not need to be touched, it can be shared with a wheel equipped with a general tire with a tube, and only needs to be tightened with a nut. Good, and the assemblability is also improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a spoke attachment portion of a tire of a motorcycle.

FIG. 2 is a cross-sectional view of a valve mounting portion of a motorcycle tire.

[Explanation of symbols]

 1 tire 1a bead seat part 3 rim 4 spoke 5 band 6 air chamber 7 valve

Claims (1)

[Claims] 1. A bead seat portion of a tire is applied to a rim provided with spokes, and a flexible annular band is integrally joined inside the bead seat portion, and the tire and the band are joined together. An airtight air chamber is formed, and a valve for injecting air into the air chamber is further provided in the band, and the tire for a motorcycle is characterized.