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Pneumatic tire

A pneumatic tire, tire circumferential technology, applied in heavy tires, tire parts, tire tread/tread pattern, etc., can solve the problem of not considering the width of the connecting part, etc., to improve soil drainage, suppress protrusion loss, The effect of ensuring wet pavement performance

Active Publication Date: 2018-01-09
TOYO TIRE & RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The height of the joint is set not to exceed the height of the protrusion, but the width of the joint is not considered

Method used

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  • Pneumatic tire
  • Pneumatic tire
  • Pneumatic tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 3

[0066] The tire of Example 3 has Figure 1-7 Features of the embodiment shown in . In Embodiment 3, the groove width of the main groove 18=11.5mm, the depth H0 of the main groove 18=16.5mm, the width J1=3.0mm of the protrusion 50, the height H1=4.0mm of the protrusion 50, and the height of the connecting portion 54 The width J2 = 1.0 mm, the height H2 of the connecting portion 54 = 4.0 mm, and the connecting portion 54 is set at the center of the longitudinal length K0 of the protrusion 50 . In addition, the connecting portion 54 is arranged so as to alternately connect the left and right blocks 24 and 26 of the main groove 18 in the groove length direction (shown as "staggered shape (hound bird shape)" in Table 1). In the tire of Example 1, the connecting portion 54 is arranged so that the left and right blocks 24 and 26 of the main groove 18 are connected on the same side in the groove length direction (indicated as "same" in Table 1), and the other features are the same as...

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Abstract

In a pneumatic tire having main grooves extending in a tire circumferential direction and land portions partitioned by the main grooves in a tread portion, a plurality of protrusions are disposed at agroove bottom of the main groove at intervals in a groove length direction, and a side surface portion of the protrusion is connected to a side surface portion of the land portion via a connecting portion having a height equal to or less than a height of the protrusion and a width narrower than a width of the protrusion.

Description

technical field [0001] This embodiment relates to a pneumatic tire. Background technique [0002] The tread portion of a pneumatic tire is generally provided with main grooves extending in the tire circumferential direction. Conventionally, in order to prevent stones from intruding into the groove, sometimes stone-biting prevention protrusions are provided on the groove bottom of the main groove. [0003] For example, Japanese Patent Publication No. Heisei 11-180112 discloses that in order to improve the effect of inhibiting stone biting, a stone-biting prevention protrusion is provided in an annular manner around the block, and the protrusion is formed by the main body. The protrusion part and the narrow sub-protrusion part continuous with this main protrusion part are comprised. Japanese Patent Laying-Open No. 2002-211210 discloses that in order to prevent stones from biting and reduce noise, projections with different heights are arranged in a pattern of repeated concav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/13
CPCB60C2200/06B60C11/11B60C2011/1338B60C2011/1361B60C11/047B60C2011/0341B60C2011/0358
Inventor 藤冈刚史
Owner TOYO TIRE & RUBBER CO LTD