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motorcycle tire

A technology of motorcycle tires and tires, which is applied to motorcycle tires, motorcycles, tire parts, etc., and can solve the problems of reduced riding comfort, reduced ground contact area, and reduced straight-line driving stability.

Inactive Publication Date: 2016-01-20
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then, during straight running at a small lean angle, the ground contact area is reduced, and the straight running stability is reduced
In addition, the ride comfort is reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Embodiments of the present invention will now be described in detail in conjunction with the accompanying drawings.

[0018] According to the present invention, a motorcycle tire 1 comprises a tread portion 2, a pair of axially spaced bead portions 4 each having a bead core 5 therein, a pair of bead portions 4 extending between the tread edge 2e and the bead portion 4. The sidewall portion 3 , the carcass 6 extending between the bead portions 4 , and the tread reinforcing layer 7 in the tread portion 2 provided outside the carcass 6 in the radial direction.

[0019] When compared with passenger car tires, truck / bus tires, etc., motorcycle tires are characterized in that their tread portion 2 (including the carcass 6, tread reinforcement 7 and tread rubber thereon) is formed with a relatively small curvature The radius is curved, so that the maximum section width of the tire is between the tread edges 2e.

[0020] The tread portion 2 has tread grooves TG forming a unidi...

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PUM

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Abstract

A motorcycle tire comprises a carcass extending between bead portions through a tread portion and sidewall portions, and tread reinforcement disposed radially outside the carcass in the tread portion. The tread reinforcement is composed of a full-width reinforcing layer (12) and a pair of axially-spaced shoulder reinforcing layers (11A,11B). The axially-spaced shoulder reinforcing layers (11A,11B) are each disposed in one of tread shoulder portions and made of reinforcing cords (11C) inclined at an angle of from 15 to 40 degrees with respect to the tire circumferential direction. The full-width reinforcing layer (12) is disposed radially outside the shoulder reinforcing layers (11A,11B) and made of at least one reinforcing cord (12C) wound helically at an angle of not more than 10 degrees with respect to the tire circumferential direction so that the full-width reinforcing layer (12) extends across a substantially full width of the tread portion (2).

Description

technical field [0001] The present invention relates to a pneumatic tire, and more particularly, to a reinforcing cord structure for a motorcycle tire. Background technique [0002] Conventional motorcycle tires (a) such as Figure 5 As shown, where the carcass (b) is composed of two carcass plies b1 and b2, the tread reinforcement (e) arranged radially outside the carcass (b) includes A belt ply (f) of parallel cords and a band ply (g) of parallel cords substantially parallel to the tire circumferential direction, said belt ply (f) extending radially arranged outside the carcass, said belt ply (g) is arranged radially outside the belt ply (f), wherein the belt ply (g) extends substantially over the entire width of the tread portion (d), On the other hand, the belt ply (f) does not extend over the entire width of the tread portion. [0003] As a result, the tread shoulders have relatively low rigidity, so it is difficult to obtain sufficient steering traction and handling ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C9/02B60C9/18B60C9/10
CPCB60C9/22B60C9/2009B60C2200/10
Inventor 熊本曜馨
Owner SUMITOMO RUBBER IND LTD
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