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Pneumatic radial tire

A radial tire, tire technology, applied in tire parts, tire tread/tread pattern, vehicle parts, etc., can solve the problem of reduced quietness, and achieve the effect of excellent skid performance and quietness

Inactive Publication Date: 2017-06-06
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, however, the increased tank volume leads to a decrease in quietness

Method used

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  • Pneumatic radial tire
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  • Pneumatic radial tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0081] In order to verify the effect of the present invention, using figure 1 Multiple tires of the type of tread pattern shown are tested to compare tire performance.

[0082] The prototypes of the tires according to Inventive Examples 1 to 3 are those in which the inclination angles of the groove walls of the circumferential main grooves with respect to the tire radial direction are appropriately defined.

[0083] In the tire prepared as a conventional example, the groove walls on the widthwise outer and inner sides of the circumferential main groove have the same inclination angle with respect to the tire radial direction.

[0084] Table 1 shows the specifications of each tire.

[0085] In Table 1, the "tire ground contact width when in contact with the ground" means when the tire is assembled to the specified rim and filled with an internal pressure of 260 kPa, and a load of 5.10 kN is applied thereon (corresponding to 80% of the maximum allowable load ) to obtain the ti...

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PUM

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Abstract

The present invention provides an inflatable radial tire having a tread surface divided into the first half and the second half by the tire equator as a boundary, the first half having a first week to the main groove extending in the direction of the tread circumference, the second half having a second week to the main slot and the third axial main slot extending in the direction of the tread circumference, wherein the first week to the main slot and the second week to the main slot are, The angle at which the groove wall on the outside of the tread width direction tilts relative to the radial direction of the tire is greater than the angle at which the groove wall on the inside of the tread width direction tilts relative to the radial direction of the tire, and the third week towards the main groove is that the angle of the groove wall on the inside of the tread width direction tilts relative to the radial direction of the tire is greater than the angle at which the groove wall on the outside of the tread width tilts relative to the radial direction of the tire.

Description

technical field [0001] The present invention relates to a pneumatic radial tire, and more particularly, to a pneumatic radial tire combining skid performance and quietness during cornering. Background technique [0002] Generally, in order to improve the braking performance, driving performance and wet performance of the tire, a pneumatic radial tire is generally formed with a tread pattern having a plurality of main grooves extending in the tread circumferential direction on the tread portion. [0003] Here, when a tire is mounted on a vehicle, the tire has a portion mounted on the inner side (hereinafter, referred to as the vehicle-mounted inner side) and a portion mounted on the outer side (hereinafter, referred to as the vehicle-mounted outer side), and they are required to have different performances. . In view of this, it is well known in the prior art to form a tread pattern that is asymmetrical with respect to the equatorial plane of the tire. [0004] For example,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C11/04B60C11/13
CPCB60C11/0306B60C11/0309B60C11/1323B60C2011/0388B60C2011/039B60C11/0304B60C11/1315
Inventor 山内启
Owner BRIDGESTONE CORP