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tire

A tire and tire circumferential technology, which is applied to tire parts, tire tread/tread pattern, vehicle parts, etc., can solve the problems of increased rigidity of the land part of the tire shoulder, damage to handling stability, etc., and reduce squeal Noise, suppression of reduction in handling stability, effect of improving noise reduction performance

Active Publication Date: 2022-07-22
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the length of the shoulder lateral groove is reduced, the rigidity of the shoulder land portion becomes relatively large, which tends to impair steering stability.

Method used

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Embodiment Construction

[0030] Hereinafter, one Embodiment of this invention is described based on drawing.

[0031] exist figure 1 , a development view of the tread portion 2 of the tire 1 of the present embodiment is shown. The tire of the present embodiment is configured as a pneumatic tire, for example. In the present embodiment, a summer tire intended to be mounted on a passenger car is shown as a preferable form.

[0032] like figure 1 As shown, the tire has a tread portion 2 . The tread portion 2 is a portion in contact with the road surface, and various tread patterns are formed. The tire 1 of the present embodiment has, for example, a left-right asymmetric tread pattern. In order to maximize the characteristics of the tread pattern, the tire of the present embodiment is specified in the direction of mounting to the vehicle. The direction of attachment to the vehicle is indicated, for example, by characters, graphics, or the like on the sidewall portion of the tire. However, the tire o...

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PUM

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Abstract

The present invention provides a tire capable of suppressing a reduction in steering stability and capable of exhibiting excellent noise reduction performance. The tire has a tread portion (2). The tread portion (2) includes a first shoulder land portion (6A) divided between the first shoulder main groove (4A) and the first tread end (Te1). The first shoulder land portion (6A) is provided with a shoulder lateral groove (10) extending from the first tread end (Te1) and interrupted in the first shoulder land portion (6A) ; The first sipe (11), which extends from the interrupted end of the shoulder transverse groove (10) to the first shoulder main groove (4A); and the second sipe (12), which extends from the first tread end ( Te1) extends toward the first shoulder main groove (4A) side, and is interrupted in the first shoulder land portion (6A). The length in the tire axial direction of the shoulder lateral grooves (10) is 0.10 to 0.30 times the width in the tire axial direction of the first shoulder land portion (6A).

Description

technical field [0001] The present invention relates to tires having shoulder transverse grooves. Background technique [0002] On the tread portion of the tire, the shoulder lateral grooves provided on the shoulder land portion improve the drainage performance of the tire. On the other hand, when driving on dry asphalt roads, there is a relatively narrow frequency band (about 400 Hz ~ 500Hz) tends to have a high sound pressure squeal noise. In the following Patent Document 1, in order to maintain the noise reduction performance and improve the drainage performance, a tire improved in the structure of the shoulder lateral grooves and the shoulder main grooves communicating with the shoulder lateral grooves is proposed. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2013-100020 [0004] However, even with the tire of Patent Document 1, the improvement in noise reduction performance is not sufficient, and further improvement is sought. [0005] On the other hand,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C11/12B60C11/03
CPCB60C11/1236B60C2011/0341B60C2011/0358B60C11/03B60C11/04B60C11/12B60C11/1263B60C2011/0369B60C2011/039B60C2011/1254B60C11/0302B60C11/1204B60C2011/0372B60C2011/1209B60C11/01B60C2011/1268
Inventor 广末瑛介
Owner SUMITOMO RUBBER IND LTD