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Pneumatic tire

A technology for pneumatic tires and tires, applied in tire parts, tire treads/tread patterns, transportation and packaging, etc., can solve the problems of decreased drainage performance, difficulty in taking into account drainage performance and noise performance, etc., to maintain drainage performance, The effect of increasing the noise, increasing the reduction effect

Inactive Publication Date: 2011-05-11
YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, after reducing the number of main grooves, the drainage performance will decrease
Therefore, it is difficult to balance drainage performance and noise performance

Method used

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  • Pneumatic tire
  • Pneumatic tire
  • Pneumatic tire

Examples

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example

[0042] Make the tire of example 1~5, its tire size is 215 / 50R17, as figure 1 As shown, the pneumatic tire specifies the installation direction inside and outside of the tire when it is installed on the vehicle, wherein three main grooves extending in the tire circumferential direction are provided on the tread portion, and the center position of the central main groove is arranged from the tire equator to the vehicle. At the position offset on the outer side, these main grooves divide 4 rows of land portions, and at the same time, in the 2 rows of central land portions located at the tire equator on the tread portion, one thin groove extending in the tire circumferential direction and one thin groove extending from the thin groove to the A plurality of inclined grooves extending outward in the tire width direction, the width of the central land portion on the outer side of the vehicle is greater than the width of the central land portion on the vehicle inner side, and two rows ...

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Abstract

The invention discloses a pneumatic tire, wherein the inner and outer installation direction of the tire is assigned when installed on a vehicle.The tire is equipped with three main grooves (11-13) running into a running surface section (1) in a tire circumferential direction.The central position of the central main groove (12) is configured to offset outward from the tire equator (CL).The main grooves (11-13) divide the running surface section into four protruding shoulder surface sections (20-50) and two middle protruding surface sections (30, 40). Angled grooves (32, 42) run from narrow grooves (31, 41, 51) to an outer side in a tire width direction. Lug grooves (22, 52) run into the shoulder surface sections (20, 50) in the width direction and are not connected to the main grooves (11, 13), where the shoulder surface sections are located on shoulder sides of the running surface section.

Description

technical field [0001] The present invention relates to a pneumatic tire provided with a plurality of main grooves extending in the tire circumferential direction on the tread portion, and more specifically relates to a pneumatic tire which can reduce the noise caused by the tread pattern while maintaining good drainage performance. pneumatic tires. Background technique [0002] In recent years, there has been a strong demand for improvement in vehicle comfort, and one index of vehicle comfort is tire-related noise performance. [0003] Pneumatic tires used in the past are usually provided with four main grooves extending in the tire circumferential direction on the tread portion, and these main grooves are divided into five rows of land portions, and a plurality of rib grooves extending in the tire width direction are appropriately provided on the land portions (For example, refer to Patent Documents 1 to 3). This pneumatic tire exhibits good drainage performance through ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/117
CPCB60C11/0304B60C11/0058B60C11/0075B60C2011/0025B60C2011/0383
Inventor 干场崇史
Owner YOKOHAMA RUBBER CO LTD
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