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Tire

A tire and tire circumferential technology, applied in tire parts, tire tread/tread pattern, vehicle parts, etc., can solve the problem of loud pumping, maintain rigidity, improve performance on ice and snow, and reduce pumping sound effect

Active Publication Date: 2019-01-29
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in order to improve the traction performance of the tire on snowy roads, there is a tendency to set the width of the lateral groove in the tread portion of the tire to be relatively large.
On the other hand, such tires tend to produce a large pumping sound generated by lateral grooves when running on a dry road.

Method used

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Examples

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 A developed view of the tread portion 2 of the tire 1 according to the present embodiment is shown. The tire 1 of the present embodiment is suitably used as a pneumatic tire for four-wheel drive vehicles such as an SUV capable of running not only on paved roads but also on uneven ground, for example. However, the tire of the present invention is not limited to such an embodiment. In another aspect of the present invention, the tire 1 can be, for example, a truck tire, a non-pneumatic tire in which pressurized air is not filled inside the tire, or the like.

[0036] Such as figure 1 As shown, for example, at least a shoulder main groove 3 and a crown main groove 4 continuously extending in the tire circumferential direction are provided on the tread portion 2 . The shoulder main groove 3 is arranged, for example, on the side closest to the tread edge Te. T...

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PUM

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Abstract

The present invention relates to a tire capable of exerting excellent on-ice / on-snow performance and noise performance on a dry road surface. The tire comprises a tread portion 2. The tread portion 2comprises a plurality of lateral grooves 8 extending in a tire axial direction and blocks 9 divided by the lateral grooves 8. At least one of the blocks 9 includes a first lateral block wall 16 positioned on a side of one of the lateral grooves 8 adjacent thereto and a sipe pair 22 consisting of a first lateral sipe 23 and a second lateral sipe 24 adjacent to each other in the tire axial directionwith a gap 25 therebetween. The first lateral block wall 16 has, at a center portion thereof in the tire axial direction, a convex portion 20 partly protruding toward the one of the lateral grooves 8. The gap 25 is arranged in a convex portion projection area 26 obtained by extending the convex portion 20 along a tire circumferential direction.

Description

technical field [0001] The present invention relates to a tire capable of exhibiting superior performance on ice and snow and noise performance on dry roads. Background technique [0002] Conventionally, various tires suitable for running on icy and snowy roads have been proposed (see, for example, Patent Document 1 below). [0003] However, in order to improve the traction performance of the tire on snowy roads, there is a tendency to set the width of the lateral groove in the tread portion of the tire to be relatively large. On the other hand, such a tire tends to generate a large pumping sound generated by lateral grooves when running on a dry road surface. [0004] Patent Document 1: Japanese Patent Laid-Open No. 2016-088219 Contents of the invention [0005] The present invention has been made in view of the above circumstances, and its main object is to provide a tire capable of exhibiting excellent performance on ice and snow and noise performance on dry roads. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/03B60C11/12
CPCB60C11/03B60C11/12B60C2011/0365B60C11/11B60C11/0306B60C2011/1254B60C2011/0346B60C2011/0358B60C2011/1213B60C11/1204B60C11/0304B60C11/0311
Inventor 中野和宏
Owner SUMITOMO RUBBER IND LTD
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