motorcycle tires

一种摩托车、轮胎的技术，应用在摩托车轮胎、摩托车、轮胎零部件等方向，能够解决操作转向盘重量的变化（过渡特性变差等问题，达到提高排水性能的效果

Inactive Publication Date: 2016-01-27
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, due to the rigidity of the tread portion of the tire as described above, there is a difference between the belt ply overlapping area where the wide ply and the narrow ply overlap, and the belt ply single layer area where only the wide ply is placed on the outside in the tire axial direction. , so there is a problem that the change in the weight of the steering wheel (transition characteristics) when the tire is tilted when turning is deteriorated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0064] Manufacturing has figure 2 The basic structure of motorcycle tires having main inclined grooves and auxiliary inclined grooves according to the specifications in Table 1, and their performances were tested. Furthermore, in order to compare Figure 4 The same test was carried out on the tire shown without a kink (Comparative Example 1). Among them, the common specifications are as follows.

[0065] Tire size:

[0066] Front wheel: 120 / 70ZR17

[0067] Rear wheel: 160 / 60ZR17

[0068] Rim size:

[0069] Front wheel: MT3.50×17

[0070] Rear wheel: MT4.50×17

[0071] Tread half unfolded width 0.5TWe: 83mm

[0072] Longitudinal main groove:

[0073] Groove width W1: 4.7mm, groove depth D1: 4.1mm

[0074] Main inclined groove:

[0075] Groove width W2: 5.4mm, groove depth D2: 4.1mm

[0076] Auxiliary inclined groove:

[0077] Groove width W3: 5.3mm, groove depth D3: 3.5mm

[0078] The test method is as follows.

[0079]

[0080] The rims of each test tire were...

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Abstract

The present invention provides a motorcycle tire capable of improving the transition characteristics from straight running to turning. A motorcycle tire (1) has a belt layer (7). The belt layer ( 7 ) includes a wide cord ( 7A) and a narrow cord ( 7B). The tread portion (2) is provided with main inclined grooves (12) at intervals along the tire circumferential direction, and the main inclined grooves (12) include: an inner inclined portion (12A) extending obliquely relative to the tire circumferential direction from the inner end (12i) , and an outer side that is continuous with the inner slope portion (12A) via the bending point (12b) and extends obliquely in such a manner that the angle with respect to the tire circumferential direction is larger than the angle of the inner slope portion (12A) with respect to the tire circumferential direction. Inclined portion (12B). The tread developed length (L2b) from the bending point (12b) to the outer edge (7Bo) of the narrow cord (7B) is 20% or less of half the tread width (0.5TWe).

Description

technical field [0001] The present invention relates to a motorcycle tire capable of improving the transition characteristics from straight running to turning. Background technique [0002] In recent years, in tires for motorcycles, there has been a strong demand for improvement in high-speed stability performance along with the construction of highway networks and higher output of motorcycles. For this reason, generally inside the tread portion, for example, a belt layer for tightening the carcass of the radial structure to increase the rigidity of the tread is provided. [0003] The belt layer is constituted by, for example, two belt plies in which belt cords are arranged obliquely with respect to the tire equator, and are overlapped in the tire radial direction in a direction in which the belt cords intersect. In addition, in order to prevent the outer edges of the belt ply from being unified to cause a large difference in rigidity, the belt ply is configured to include ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C9/10B60C11/03
CPCB60C2200/10B60C11/0302B60C2011/0374B60C2011/0344B60C2011/0372B60C9/18B60C9/20B60C9/22
Inventor 原田祐介
Owner SUMITOMO RUBBER IND LTD
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