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Pneumatic tire

A technology of pneumatic tires and tires, which is applied to tire parts, tire tread/tread pattern, transportation and packaging, etc., and can solve problems such as partial wear

Active Publication Date: 2021-09-28
TOYO TIRE & RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the blocks which are the above-mentioned tread land parts tend to be prone to uneven wear due to their ease of movement.

Method used

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  • Pneumatic tire
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0016] figure 1 It is a developed view of the tread surface Tr included in the pneumatic tire PT (hereinafter, also simply referred to as "tire PT") of the present embodiment. figure 1 The up and down direction of is equivalent to the tire circumferential direction CD, figure 1 The left-right direction of is equivalent to the tire width direction WD. Such as figure 1 As shown, the tread pattern formed on the tread surface Tr is a block-shaped pattern in which a plurality of blocks divided by slits are arranged in the tire circumferential direction. The tire PT of this embodiment is a heavy-duty tire mounted on a truck or a bus.

[0017] On the tread surface Tr of the tire PT, four main grooves 61 , 61 , 62 , 62 extending continuously in the tire circumferential direction CD are provided. In this embodiment, the number of main grooves is four, but it is not limite...

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Abstract

The present invention provides a pneumatic tire capable of suppressing partial wear. The tire includes a plurality of land portions arranged in the tire width direction, at least one of the plurality of land parts includes: first slits; and a plurality of blocks, which are divided by the first slits and arranged in the tire circumferential direction. Each first slit has: a narrow slit portion; a first wide slit portion, which is arranged on the first side in the tire width direction of the slit narrow portion; and a second slit wide portion arranged on the second side in the tire width direction of the slit narrow portion . The slit narrow portion and the first wide slit portion are inclined in opposite directions with respect to the tire width direction.

Description

technical field [0001] The present invention relates to a pneumatic tire. Background technique [0002] There is known a studless tire that ensures running performance (performance on ice) on icy roads with a low coefficient of friction. For example, Patent Document 1 has a plurality of blocks as tread land portions divided by main grooves and slits, and sipes provided on the respective blocks. The on-ice performance can be improved by the edge effect and water removal effect of the sipe, and the on-ice performance can be improved by the traction effect of the slit. [0003] However, blocks which are the above-mentioned tread land portions tend to be unevenly worn because they are easy to move. . [0004] prior art literature [0005] patent documents [0006] Patent Document 1: Japanese Patent Laid-Open No. 2012-250610 Contents of the invention [0007] The present invention provides a pneumatic tire capable of suppressing uneven wear. [0008] The pneumatic tire o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/03B60C11/12
CPCB60C11/03B60C11/032B60C11/12B60C11/1236
Inventor 藤冈刚史
Owner TOYO TIRE & RUBBER CO LTD