Tire

A tire and tire circumferential technology, applied to tire parts, tire tread/tread pattern, transportation and packaging, etc., can solve problems such as partial wear, achieve suppression of partial wear, improve handling stability and wet road performance Effect

Active Publication Date: 2020-08-11
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for example, when driving, there is a problem that uneven wear tends to occur on the crown land portion where a large ground contact pressure is usually applied, starting from the connecting portion between the lateral groove and the sipe.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0036] An embodiment of the present invention will be described below based on the drawings.

[0037] figure 1 A developed view showing a tread portion 2 of a tire 1 according to an embodiment of the present invention, figure 2 Its Ⅱ-Ⅱ line profile. like figure 1 and figure 2 As shown, as a preferred mode, the tire 1 of the present embodiment is configured as a pneumatic tire for passenger vehicles. As a more preferable aspect, the tread portion 2 has a left-right asymmetrical pattern with respect to the tire equator C. As shown in FIG.

[0038] Land portions 10 to 14 defined by a plurality of main grooves 3 to 6 are formed on the tread portion 2 . The main grooves 3 to 6 refer to grooves extending continuously in the tire circumferential direction, for example, sufficiently contributing to drainage performance.

[0039] The main grooves 3 to 6 are provided, for example, with a groove width of 5.0 mm or more, preferably 6.0 mm or more, more preferably 8.0 mm or more. ...

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PUM

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Abstract

Provided is a tire that allows improvement of steering stability and wet performance while inhibiting occurrence of uneven wear. A tire 1 includes a tread portion 2, and the tread portion 2 includes acrown land portion 10 disposed on a tire equator C. The crown land portion 10 includes: a first crown edge 7 that extends in a tire circumferential direction on one side of the tire equator C; a second crown edge 8 that extends in the tire circumferential direction on the other side of the tire equator C; a plurality of crown lateral grooves 20 that extend from the first crown edge 7 beyond the tire equator C and terminate in the crown land portion 10; and crown sipes 22 that include first sipe elements 23 extending from the crown lateral grooves 20 toward the second crown edge 8. The first sipe elements 23 intersect the crown lateral grooves 20 at an obtuse angle.

Description

technical field [0001] The present invention relates to vehicle tires used for automobiles and the like. Background technique [0002] Patent Document 1 below describes a pneumatic tire in which a first inclined groove and a first sipe are provided on a first land portion. The first sipe includes a first sipe portion to an n-th sipe portion, which have different angles relative to the circumferential extension of the tire, and which are sequentially connected from one end of the first sipe. [0003] [Prior Art Literature] [0004] 【Patent Literature】 [0005] [Patent Document 1] Japanese Patent No. 6321458 Contents of the invention [0006] 【Problem to be solved by the invention】 [0007] In vehicle tires, water drainage, traction, and braking performance on wet road surfaces (hereinafter, these are collectively referred to as "wet road performance") and steering stability on dry road surfaces are improved at a high level (hereinafter, simply referred to as "steering ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/117B60C11/12
CPCB60C11/03B60C11/12B60C11/1272B60C2011/0337B60C11/04B60C11/1204B60C2011/0388B60C2011/0383B60C11/0311B60C11/0304B60C11/0306B60C2011/0341Y02T10/86B60C11/1236B60C11/13B60C2011/0365B60C2011/0369
Inventor 堀口俊树兼松义明
Owner SUMITOMO RUBBER IND LTD
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