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Motorcycle tire

A technology for motorcycle tires and carcass, which is applied to motorcycle tires, motorcycles, tire parts, etc., and can solve problems such as bending

Inactive Publication Date: 2018-10-23
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this tire, there is still a possibility of buckling during turning at a large inclination angle so that the edge portion of the tread comes into contact with the ground

Method used

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  • Motorcycle tire
  • Motorcycle tire
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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0029] According to the present invention, if figure 1 As shown, a motorcycle tire 1 comprises: a tread portion 2; a pair of axially spaced apart bead portions 4 each having a bead core 5 therein; A pair of sidewall portions 3; a carcass 6 extending between the bead portions 4, passing through the tread portion 2 and the sidewall portion 3; and a tread reinforcing band 7 in the tread portion 2 Arranged on the radially outer side of the carcass 6 .

[0030] As a characteristic of motorcycle tires, the tread portion 2 (including the carcass 6, the belt 7, and the tread rubber thereon) is convexly curved so that the tread 2S between the tread edges Te resembles an arc that bulges radially outward. is curved like a line, and the maximum cross-sectional width of the tire 1 occurs between the tread edges Te, ie equal to the axial tread width TW.

[0031] The ...

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Abstract

The invention relates to a motorcycle tire. The motorcycle tire comprises a carcass extending between a pair of bead portions through a tread portion and a pair of sidewall portions, and a band disposed radially outside the carcass in the tread portion. The band is composed of a ply of a spirally wound steel band cord, and the steel band cord has a compressive stiffness of not more than 500 N / mm,a bending rigidity of not more than 15.0 g*cm, and an elongation percentage at 49N of 0.5% to 2.5%.

Description

technical field [0001] The present invention relates to motorcycle tires, and more particularly, to a tread reinforcing belt capable of improving the durability of the tire while ensuring good handling stability. Background technique [0002] Motorcycle tires have been proposed provided with belts utilizing steel cords in order to improve steering performance while maintaining good high-speed stability during straight-line running. [0003] Here, "belt" refers to a tread reinforcing ply in which the angle of the reinforcing cords relative to the tire circumferential direction is relatively small, eg, less than 10 degrees, typically, less than about 5 degrees. [0004] When steel cords are used as the cords of this tread reinforcement belt for motorcycle tires, since the steel cords have high compressive rigidity, kinks may occur on the belt cords when motorcycle tires are manufactured. The radius of curvature of the tread of the motorcycle tire is small, and the outer diame...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C9/18B60C9/20B60C9/22
CPCB60C9/18B60C9/20B60C9/22B60C2009/1828B60C2009/2074B60C2009/2093B60C2009/2252B60C2009/228B60C9/0007B60C9/0057B60C9/2204B60C2009/2257B60C2009/2266B60C2009/2285B60C2200/10B60C2009/2214B60C2009/2261
Inventor 山口荣士
Owner SUMITOMO RUBBER IND LTD
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