Pneumatic tire

A technology for pneumatic tires and tires, which is applied to tire parts, tire tread/tread pattern, transportation and packaging, etc. It can solve the problems of easy drop in noise performance and large groove area, so as to improve driving performance and suppress pattern noise , the effect of suppressing the transfer of noise

Pending Publication Date: 2021-02-19
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, as described above, since tires for running on unpaved roads basically have blocks as the main body and have a large groove area, there is a tendency that noise performance (such as pattern noise) tends to decrease. Therefore, it is also required to maintain or maintain good noise performance. improve

Method used

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  • Pneumatic tire
  • Pneumatic tire
  • Pneumatic tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0050] The tire size is LT265 / 70R17 121Q, with figure 1 The illustrated basic structure, with figure 2 The tread pattern of the tire is based on the number of linear grooves constituting the bending elements, the type of inclination angle of the linear grooves included in the bending elements with respect to the tire circumferential direction, the inclination angle of each linear groove, and the bending elements Types of the lengths of the linear grooves included in , the length of each linear groove (ratio to the total length of the linear grooves included in the bending element), the groove width of the main groove, the groove depth of the main groove, the main groove The position of the shoulder transverse groove, the groove depth of the shoulder transverse groove, the number of shoulder blocks arranged on the outside of one bending element in the tire width direction, the presence or absence of protrusions at the bottom of the groove, and the type of groove elements forme...

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Abstract

Provided is a pneumatic tire having improved noise performance and improved traveling performance on unpaved roads. In the present invention, a pair of main grooves 10 arranged on the respective sidesof the tire equator CL and extending in the tire circumferential direction are configured such that a series of bent elements 12 formed by connecting at least five linear groove sections 11 via bending points are continuously and repeatedly arranged in the tire circumferential direction. The at least five linear groove sections 11 included in each of the bent elements 12 have three of more different angles of inclination with respect to the tire circumferential direction, and have five or more different lengths.

Description

technical field [0001] The present invention relates to a pneumatic tire suitable as a tire for running on unpaved roads, and more specifically, to a pneumatic tire having improved noise performance and running performance on unpaved roads. Background technique [0002] In pneumatic tires intended to run on unpaved roads such as uneven ground, muddy ground, snowy roads, sandy ground, and rocky ground, generally speaking, tires with large groove areas and horizontal grooves and blocks with many edge components are used. surface pattern. In such tires, mud, snow, sand, stones, rocks, etc. on the road surface (hereinafter, they are collectively referred to as "mud, etc.") are bitten to obtain traction performance, and mud, etc. Improve running performance on unpaved roads (for example, refer to Patent Documents 1 and 2). [0003] Comparing the tires of Patent Documents 1 and 2, it can be said that the tire of Patent Document 1 has a relatively small groove area and also consi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/13B60C11/03B60C11/12
CPCB60C11/0311B60C11/0306B60C2011/0346B60C2011/0353B60C2011/1213B60C11/1281B60C2011/036B60C2011/0365B60C2011/0372B60C2011/1361B60C11/12B60C11/13B60C2011/0355
Inventor 坂本洋佑
Owner THE YOKOHAMA RUBBER CO LTD
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