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Tire

A technology for tires and crowns, which is applied to tire parts, tire treads/tread patterns, transportation and packaging, etc. It can solve the problems of wet performance degradation, crown block wear, uneven wear, etc., and achieve deformation suppression , Improve rigidity, excellent support effect

Active Publication Date: 2018-08-24
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a tendency to cause early wear and uneven wear of the crown blocks.
On the other hand, in the case of enlarging the crown block in order to improve such a defect, the wet performance tends to decrease.

Method used

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Experimental program
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Effect test

Embodiment Construction

[0034] Hereinafter, one embodiment of the present invention will be described based on the drawings.

[0035] figure 1 It is a developed view showing the tread portion 2 of the tire 1 according to the embodiment of the present invention. The tire 1 according to the present embodiment can be used for various tires such as passenger car tires, pneumatic tires for heavy loads, and non-pneumatic tires in which the inside of the tire is not filled with pressurized air. The tire 1 of the present embodiment is preferably used, for example, as a pneumatic tire for heavy loads.

[0036] Such as figure 1 As shown, the tire 1 of the present invention has a tread portion 2 in which the direction of rotation R is specified. The rotation direction R is shown on the side wall part by letters or symbols, for example (not shown).

[0037] The tread portion 2 is provided with crown main grooves 3 and shoulder main grooves 4 extending continuously in the tire circumferential direction. One ...

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PUM

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Abstract

The present invention provides a tire which can develop excellent wetland performances and uneven prevention wearing performances. The tire has a tire surface portion (2). The tire surface portion (2)comprises a pair of crown main grooves (3) continuously extended in a tire surface circumference, and a crown land portion (10) divided between the crown main grooves (3). The crown land portion (10)comprises a plurality of crown pattern blocks (15) divided by crown cross grooves (14) connected between the crown main grooves (3). The at least one of the crown pattern blocks (15) is provided withcrown cutter groove patterns (30) extended in a wave shape and connected between the crown cross grooves (14).

Description

technical field [0001] The present invention relates to a tire that can exhibit excellent wet performance and uneven wear resistance. Background technique [0002] Various tires in which a plurality of crown blocks are provided on a tread portion have been proposed (see, for example, Patent Document 1 below). Generally, there is a tendency that a large ground contact pressure acts on the crown blocks. Therefore, there is a tendency to cause early wear and uneven wear of the crown blocks. On the other hand, in the case of enlarging the crown blocks in order to improve such defects, the wet performance tends to be reduced. [0003] As a result of various experiments, the inventors have found that by improving the sipes provided on the crown blocks, the wet performance and the uneven wear resistance can be improved in a balanced manner. [0004] prior art literature [0005] patent documents [0006] Patent Document 1: Japanese Patent Laid-Open No. 2015-089796 Contents o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/03B60C11/12
CPCB60C11/032B60C11/1204B60C2011/0339
Inventor 日比野敦
Owner SUMITOMO RUBBER IND LTD