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Pneumatic tire

A technology for pneumatic tires and tires, which is applied to tire parts, tire treads/tread patterns, transportation and packaging, etc. It can solve the problem that the improvement effect of drainage performance is not necessarily sufficient, achieve excellent drainage performance, and improve deflection resistance Abrasion resistance, effect of maintaining uneven wear resistance

Active Publication Date: 2011-04-27
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present situation is that when such one-end-closed inclined grooves are provided on the intermediate land portion between the central land portion and the shoulder land portion, the occurrence of partial wear can be suppressed, but the effect of improving the drainage performance is not sufficient. must be sufficient

Method used

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  • Pneumatic tire
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0089] Tires of Examples 1 to 7 were produced. The tires of Examples 1 to 7 are pneumatic tires with a tire size of 205 / 55R16, designated front and rear assembly directions when mounted on a vehicle, and asymmetric tread patterns on both sides of the tire equator, wherein: figure 1 As shown, four main grooves extending in the tire circumferential direction are provided on the tread portion, five rows of land portions are divided by these main grooves, and a plurality of land portions inclined with respect to the tire circumferential direction are provided on the central land portion located on the tire equator. The first inclined groove is provided with a plurality of second inclined grooves inclined in the same direction as the first inclined groove on the inner middle land portion located on the vehicle inner side of the central land portion, so that one end of each first inclined groove is located on the central land portion. Open the main groove between the inner middle la...

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Abstract

A pneumatic tire having enhanced water discharge performance achieved with resistance to uneven wear maintained at a high level. In the pneumatic tire, at least three main grooves extending in the tire's circumferential direction are formed in a tread section, and rows of land sections are formed by the main grooves. Referring to a pair of land sections located on both sides of any one of the main grooves other than the main groove on the outermost side of the tire in the lateral direction thereof, first tilt grooves tilting relative to the tire's circumferential direction are formed in either of the pair of land sections, second tilt grooves tilting in the same direction as the first tilt grooves are formed in the other of the pair, one end of each of the first tilt grooves is opened to the main groove located between the pair of land sections with the other end terminating in said land section of the pair, and one end of each of the second tilt grooves is opened to the main groove located between the pair of land sections with the other end terminating in the other of the pair.

Description

technical field [0001] The present invention relates to a pneumatic tire having a plurality of main grooves extending in the tire circumferential direction in a tread portion, and more specifically, to a pneumatic tire capable of achieving both drainage performance and uneven wear resistance. Background technique [0002] Pneumatic tires generally include a plurality of main grooves extending in the tire circumferential direction in a tread portion. These main grooves have a large cross-sectional area and serve as drainage performance. In addition, by providing a plurality of lug grooves extending in the tire width direction in the tread portion and making these lug grooves communicate with the main grooves, drainage performance can be further improved. [0003] However, when the land portions divided by the main grooves are subdivided into a plurality of blocks by the lug grooves, there is a disadvantage that uneven wear tends to occur on these blocks. In view of this, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/04B60C11/01B60C11/13
CPCB60C2011/0388B60C11/0306Y10S152/03B60C2011/0381B60C11/1392B60C11/0309B60C2011/0383
Inventor 温品良介
Owner THE YOKOHAMA RUBBER CO LTD
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