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Motorcycle tire

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，能够解决抓地力干路性能变差等问题，达到大刮扫效果、提高湿路性能和干路性能、大接地面积的效果

Active Publication Date: 2014-07-09
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the motorcycle tires as described above, since the ground contact area of ​​the tread portion and the rigidity of the tread portion are reduced, there is a problem that dry road performance indicating grip on a dry road surface deteriorates.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0061] In order to confirm the effect of the present invention, the figure 1 The basic pattern and the 90 / 90-1050J motorcycle tires based on the specifications in Table 1 were tested. In addition to the grooves listed in Table 1, the groove width and angle of each groove are as follows: figure 1 shown. In addition, the main common specifications and test methods of each tire are as follows.

[0062] Tread width TW: 91mm

[0063] Groove depth of the main inclined groove: 5.5mm

[0064] Groove depth of shallow groove: 2.7mm

[0065] Groove depth of gradually increasing part: 5.2mm

[0066] Groove depth of central main groove: 5.5mm

[0067] Groove depth of fine groove: 1.0mm

[0068]

[0069] Each test tire was mounted on all the wheels of a motorcycle (displacement: 50 cc) under the following conditions. In addition, the test driver drives on the test track on the asphalt road with a water depth of 0.5 mm to 2.0 mm and the test track on the dry asphalt road, and compare...

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Abstract

A motorcycle tire comprises a tread portion (2) provided on each side of the tire equator with primary oblique grooves (8) extending from a tread center region to the vicinity of the tread edge, and secondary oblique grooves (9) each having an axially outer end (9e) positioned axially inside the axially outer ends (8e) of the primary oblique grooves. The secondary oblique grooves comprises a pair of gradually widening parts (13) respectively extending from two extreme ends (9e,9i) of the secondary oblique groove in its longitudinal direction toward an intermediate position between the two extreme ends, while gradually increasing the groove width measured perpendicularly to the longitudinal direction, and a pair of gradually narrowing parts (14) which are disposed between the gradually widening parts, and of which groove widths gradually decrease from the gradually widening parts toward the intermediate position.

Description

technical field [0001] The present invention relates to a tire for motorcycles in which wet performance and dry performance are improved in a balanced manner. Background technique [0002] A motorcycle tire is known that has a plurality of inclined grooves inclined relative to the tire circumferential direction in a tread portion. In order to improve grip on a wet road surface, that is, wet performance, it is known to increase the groove volume by increasing the groove width of the inclined groove. [0003] However, in the motorcycle tires as described above, since the ground contact area of ​​the tread portion and the rigidity of the tread portion are reduced, there is a problem that dry road performance indicating grip on a dry road surface deteriorates. The related art is described in the following patent documents 1 and 2. [0004] Patent Document 1: Japanese Patent Laid-Open No. 2011-116658 [0005] Patent Document 2: Japanese Patent Application Laid-Open No. 08-1692...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/117
CPCB60C2011/0367B60C2011/1231B60C2011/0365B60C2011/0381B60C11/1369B60C2011/0369B60C11/1281B60C2011/0355B60C2011/0344B60C2200/10B60C2011/0374B60C11/0302B60C11/032
Inventor 松并俊行吉田有美子
Owner SUMITOMO RUBBER IND LTD
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