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motorcycle tires

A technology for motorcycles and tires, applied to tire parts, tire treads/tread patterns, vehicle components, etc., can solve problems such as insufficient transition characteristics of roll feeling, achieve increased roll feel, and improve turning performance , The effect of smooth change of roll feeling

Active Publication Date: 2018-11-16
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the tire proposed in the above-mentioned document 1, the transition characteristic of the roll feeling is insufficient, and further improvement of the cornering performance is required.

Method used

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Experimental program
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Effect test

Embodiment

[0071] Based on the specifications in Table 1, a trial-produced form figure 1 the basic construction shown, and ends with figure 2The tread pattern is a motorcycle tire with a basic pattern (size: 90 / 80R17). In each tread pattern, the inclination directions of the inner and outer middle slant grooves and the shoulder slant grooves are the same as each other, and are different from the inclination directions of the center slant grooves. When viewed in the tire axial direction, the inner and outer middle inclined grooves and the shoulder inclined grooves do not overlap each other.

[0072] In Table 1,

[0073] ※1)..."C" means only placed in the center area, "C~M" means across the center area and middle area, "C~S" means across the center area, middle area, and shoulder area, "M" " means that it is arranged only in the middle region, "M-S" means that it spans the middle region and the shoulder region, and "S" means that it is arranged only in the shoulder region.

[0074] ※...

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Abstract

The present invention provides a tyre for a motorcycle, which ensures rolling characteristics from a middle term to a final term of rolling and improves transitional characteristics of the rolling, so as to improve cornering performance. Tread patterns at one side and the other side of the tyre comprise internal middle incline grooves configured to cross a center area and a middle area, external middle incline grooves configured to cross the middle area and a tyre shoulder area, and tyre shoulder incline grooves only configured in the tyre shoulder area, wherein the tyre shoulder incline grooves are communicated with a tyre surface end. The internal and external middle incline grooves and the tyre shoulder incline grooves incline towards the same direction at angles of theta a, theta b, and theta c, and theta a < theta b < theta c. During axial observation of the tyre, the internal and external middle incline grooves and the tyre shoulder incline grooves are not overlapped. During circumferential observation, the internal and external middle incline grooves are overlapped at an overlap width We1, and the external middle incline grooves and the tyre shoulder incline grooves are overlapped at an overlap width We2. The overlap width We1 and the overlap width We2 are respectively 20%-40% and 10%-30% of a groove length Lb1.

Description

technical field [0001] The present invention relates to a motorcycle tire suitable for use in underbone races and having improved cornering performance. Background technique [0002] Such as Figure 5 As shown schematically, a motorcycle rolls down in such a way that the vehicle body rotates left and right about the roll axis Z (sometimes referred to as a tilt), and the front tires af turn in response to the roll. Turning is performed at an angle, and the aforementioned roll axis Z extends from the ground contact point pr of the rear tire ar toward the front and obliquely upward. [0003] Furthermore, in motorcycle tires, in order to improve the turning performance, it is required to increase the above-mentioned steering angle and its feel (hereinafter referred to as "roll feeling") from the middle to the end of the roll, and to resist the roll so that the tire is hard to fall. The linear control of the lower roll characteristic and the transition characteristic of the abov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C11/12B60C11/117
Inventor 武内宏文
Owner SUMITOMO RUBBER IND LTD
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