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pneumatic tire

A technology of pneumatic tires and tires, which is applied in the direction of off-road vehicle tires, tire parts, tire treads/tread patterns, etc. It can solve the problems that the ends of the convex parts are easy to wear and achieve good traction effects

Active Publication Date: 2021-07-02
TOYO TIRE & RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This also causes the end of the convex part to be easily worn.

Method used

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Embodiment Construction

[0030] A pneumatic tire according to the embodiment will be described based on the drawings. In addition, the characteristics of a pneumatic tire in the following description refer to the characteristics of a pneumatic tire mounted on a normal rim and filled with a normal internal pressure in an unloaded state unless otherwise specified. Here, the regular rim is a "standard rim" in the JATMA standard, a "Design Rim" in the TRA standard, or a "Measuring Rim" in the ETRTO standard. In addition, the normal internal pressure is the "maximum tire pressure" in the JATMA standard, the maximum value in the "TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES (tire load limit under different cold tire inflation pressure)" in the TRA standard, or the ETRTO standard "INFLATIONPRESSURE (inflation pressure)" in.

[0031] In addition, in the present invention, a sipe refers to a narrow groove, and more precisely, refers to a condition in which a pneumatic tire mounted on a normal rim and ...

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Abstract

The present invention relates to a pneumatic tire. The present invention provides a pneumatic tire that exhibits good traction and is less prone to local wear in blocks. The first tire block (20) and the second tire block (30) are arranged in the tire circumferential direction across the groove, the first tire block (20) has a first protrusion (22) extending toward the second tire block (30), The second tire block (30) has a second protrusion (32) extending toward the first tire block (20), the first protrusion (22) and the second protrusion (32) overlap in the tire width direction, and The ends of the first convex portion (22) and the second convex portion (32) are formed with two-stage tapered portions (50, 60), and the configuration of the two-stage tapered portions (50, 60) has a first tapered surface on the grounding surface side. (51, 61), and the second tapered surface (52, 62) on the bottom side of the groove, the inclination angle of the first tapered surface (51, 61) relative to the tire radial direction is greater than that of the second tapered surface (52, 62) relative to Tire radial inclination angle.

Description

[0001] related application [0002] This application is based on Japanese patent application 2018-028821 (filing date: February 21, 2018), and enjoys priority based on Japanese patent application 2018-028821. This application contains the entire contents of Japanese Patent Application 2018-028821. technical field [0003] The present invention relates to a pneumatic tire. Background technique [0004] As disclosed in Patent Documents 1 to 3, there is known a pneumatic tire in which a plurality of polygonal blocks are arranged in a tread portion. In order for the pneumatic tire to exhibit high traction in multiple directions, it is effective to provide the block with a plurality of ends (sides) extending in different directions. In particular, it is effective to form protrusions extending in the tire circumferential direction on the blocks in order to improve the traction in the tire width direction which tends to be insufficient. [0005] In addition, in order for the pne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C11/03B60C11/12
CPCB60C11/0304B60C11/0306B60C11/1259B60C2011/1268B60C2011/0341B60C11/01B60C11/11B60C11/12B60C13/002B60C2011/013B60C2011/1361B60C2200/14B60C11/1392B60C11/1376B60C11/0309B60C11/1236B60C11/1204
Inventor 谷口二朗
Owner TOYO TIRE & RUBBER CO LTD