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Pneumatic tire

A technology for pneumatic tires and tires, applied in tire parts, tire tread/tread pattern, transportation and packaging, etc., can solve the problem of noise without consideration, and achieve the purpose of dispersing noise, improving performance on snow, and improving performance on ice. Effect

Inactive Publication Date: 2015-05-27
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned pneumatic tires are only equipped with spikes in consideration of the existing performance on ice and snow roads, and the noise generated by the spikes is hardly considered.

Method used

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  • Pneumatic tire
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Examples

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Embodiment Construction

[0029] Hereinafter, one embodiment of the present invention will be described based on the drawings.

[0030] figure 1 A tire for a car, for example, is shown as a pneumatic tire (hereinafter, sometimes simply referred to as a "tire") 1 according to the present embodiment. A tread portion 2 of the tire 1 is provided with a longitudinal groove 3 extending continuously in the tire circumferential direction, and a plurality of lateral grooves 4 intersecting the longitudinal groove 3 and spaced apart in the tire circumferential direction. Accordingly, on the tread portion 2, a plurality of blocks 5 defined by the longitudinal groove 3 and the lateral groove 4 are spaced apart in the tire circumferential direction.

[0031] In addition, the tread portion 2 of the present embodiment includes a one-side area T1 located on one side of the tire equator C and an other-side area T2 located on the other side of the tire equator C, and has a direction for specifying the tire rotation dire...

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Abstract

A pneumatic tire provided with a tread pattern, wherein a tread half (T1,T2) which is one half of the tread pattern on each side of the tire equator (C) is made up of repeat design units (12) arranged circumferentially of the tire. The repeat design units have at least two different circumferential pitch lengths (L1,L2), and the repeat design units are each provided with at least one stud hole(13).

Description

technical field [0001] The present invention relates to a pneumatic tire capable of improving performance on snow, performance on ice, and noise resistance. Background technique [0002] For example, Patent Document 1 below proposes a stud-type pneumatic tire for improving running performance on icy and snowy roads by attaching pins made of metal or the like to blocks provided on a tread portion. In such a pneumatic tire, a plurality of pin holes for attaching pins are provided in advance in the treads of the blocks. [0003] Patent Document 1: International Publication No. WO2004 / 103738 Pamphlet [0004] However, the above-mentioned pneumatic tires are provided with studs only in consideration of the existing performance on ice and snow, and little consideration is given to the noise generated by the studs. Contents of the invention [0005] The present invention has been made in view of the above actual situation, and its main purpose is to provide a pneumatic tire in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C11/117
CPCB60C11/0302B60C11/0318B60C11/12B60C11/1625
Inventor 沼田一起
Owner SUMITOMO RUBBER IND LTD