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Pneumatic tire

A pneumatic tire, tire circumferential technology, applied to tire parts, tire tread/tread pattern, vehicle parts, etc., can solve problems such as insufficient rigidity

Pending Publication Date: 2022-06-24
TOYO TIRE & RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, since the bottom rising portion is intermittently arranged, the rigidity of the corner portion of the block is not sufficient, and there is still room for improvement in uneven wear resistance, especially toe heel wear resistance (to-heel wear resistance) performance.

Method used

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  • Pneumatic tire
  • Pneumatic tire
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Examples

Experimental program
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Effect test

Embodiment Construction

[0018] Below, refer to Figure 1 to Figure 5 , an embodiment of the pneumatic tire will be described. In addition, in each drawing, the dimensional ratio of the drawings does not necessarily match the actual dimensional ratio, and the dimensional ratio between the drawings does not necessarily match.

[0019] In each figure, the first direction D1 is the tire width direction D1 parallel to the rotation center of the pneumatic tire (hereinafter, also simply referred to as "tire") 1, that is, the tire rotation axis, and the second direction D2 is the diameter direction of the tire 1 That is, the tire radial direction D2 and the third direction D3 are the tire circumferential direction D3 around the tire rotation axis.

[0020] In the tire width direction D1, the inner side is the side close to the tire equatorial plane S1, and the outer side is the side away from the tire equatorial plane S1. In addition, in the tire width direction D1, the first side D11 is also called a firs...

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PUM

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Abstract

A pneumatic tire is provided with a plurality of main grooves formed in a tread portion and extending in a tire circumferential direction, the plurality of main grooves including: a shoulder main groove located at an outermost position in a tire width direction; the shoulder main groove is provided with a boss formed by protruding a first side of a groove bottom of the shoulder main groove in the width direction of the tire from a second side, and the boss is lower than an outer surface of the tread portion and continuously extends over the entire circumference in the circumferential direction of the tire.

Description

technical field [0001] The present invention relates to a pneumatic tire. Background technique [0002] The pneumatic tire disclosed in the following Patent Document 1 includes: a main groove (hereinafter referred to as a shoulder main groove) which is located at the outermost position of the ground contact surface in the tire width direction and extends along the tire circumferential direction; Extending from the shoulder main groove to the outer side of the tire ground contact end; and a base portion including a boundary portion from the lug channel to the shoulder main groove, provided across the shoulder main groove and the lug groove, and extending from the groove bottom formed by uplifting. By providing the bottom raised portion, the rigidity of the corner portion of the block in the shoulder portion, which is prone to deformation, can be improved. However, since the raised portions are intermittently arranged in the tire circumferential direction together with the l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/13B60C11/12B60C11/01
CPCB60C11/13B60C11/1323B60C11/12B60C11/01B60C2011/013B60C2011/0341B60C2011/0346B60C2011/0355B60C2011/0369B60C11/125B60C2011/1338B60C11/1369B60C2011/1361B60C11/0309B60C2011/0353
Inventor 佐野伸悟
Owner TOYO TIRE & RUBBER CO LTD