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Pneumatic tire

一种充气轮胎、槽脊的技术，应用在轮胎零部件、轮胎胎面/胎面花纹、运输和包装等方向，能够解决刀槽花纹扭曲、壁表面不能彼此支撑、块破裂等问题，达到抑制破裂、保证抗不均匀磨损性的效果

Inactive Publication Date: 2005-09-28
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in a general sipe, although the wall surfaces support each other against the force in the tire circumferential direction and therefore block rigidity can be ensured to a high degree, the wall surfaces cannot support each other against the lateral force, so at the bottom of the sipe will produce large distortion
If this distortion occurs repeatedly, cracks are likely to occur at the bottom of the sipe, and there is a tendency for the block to break

Method used

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Examples

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Embodiment Construction

[0019] A specific embodiment of the present invention will be explained together with the illustrated example. figure 1 is a developed view showing the tread pattern when the pneumatic tire of the present invention is a heavy-duty tire. exist figure 1 In the shown pneumatic tire 1, a tread portion 2 is provided with a circumferential main groove 3 extending in the tire circumferential direction, so that a rib-shaped land portion 4 is formed between the circumferential main grooves 3 and 3 while being formed on the circumferential Between the main groove 3 and the tread edge (Te). At least one rib-shaped land portion 4 is provided with lateral grooves 5 which traverse the rib-shaped land portion 4, whereby the rib-shaped land portion 4 is formed to include blocks 6 in the circumferential direction. The block array7.

[0020] In this example, the circumferential main groove 3 includes five grooves, that is, a central circumferential main groove 3i extending on the equatorial ...

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Abstract

A pneumatic tire which includes a tie bar in a lateral groove disposed in a block array, the tie bar connecting adjacent blocks in a circumferential direction through the lateral groove. The tie bar is formed with a sipeing having a zigzag portion, the zigzag portion extending in a zigzag manner in a direction of a groove centerline of the lateral groove. The sipeing is a three-dimensional sipeing in which a sipeing wall surface is repeatedly recessed and projected, three-dimensionally.

Description

technical field [0001] The present invention relates to a pneumatic tire in which tie bars are provided with sipes to improve on-snow performance and wet performance from the middle of wear while ensuring uneven wear resistance. Background technique [0002] In, for example, all-season tires and snow tires, a block pattern is used in which the tread portion is divided into blocks by tread grooves consisting of a circumferential main groove extending in the circumferential direction of the tire and a The lateral grooves intersected by the circumferential main grooves are due to consideration of snow performance and wet performance. At this time, if the tread grooves are deep and wide, performance such as on-snow performance can be reliably ensured. On the other hand, the rigidity of the block decreases, and uneven wear such as heel and toe wear tends to occur. [0003] Japanese Patent Application Publication No. H11-278016 proposes that a connecting bar is provided for the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/03B60C11/11B60C11/12B60C11/13
CPCY10S152/03B60C2011/1213B60C11/124Y10S152/902B60C11/1369B60C11/12B60C11/1218B60C11/11
Inventor 新村恭司杉原秀明
Owner SUMITOMO RUBBER IND LTD
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