Pneumatic tire

A technology for pneumatic tires and tires, applied in tire parts, tire treads/tread patterns, transportation and packaging, etc. Effect

Active Publication Date: 2009-01-07
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although high drainage can be ensured by arranging multiple inclined grooves, the air column resonance noise generated by the arc-shaped curved main grooves and auxiliary grooves is transmitted from the multiple inclined grooves to the outside as high-frequency road noise. , prone to noise

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] figure 1 is a plan view of a tread portion, showing a pneumatic tire according to Example 1 of the present invention; figure 2 It is a schematic sectional view showing the pneumatic tire of Example 1.

[0044] In addition, in the following description, the so-called tire width direction is a direction parallel to the rotation axis of the pneumatic tire; The outer side is the direction opposite to the direction toward the equatorial plane (equatorial line) in the tire width direction. In addition, the tire radial direction is a direction perpendicular to the rotational axis of the pneumatic tire, and the tire circumferential direction is a direction in which the pneumatic tire rotates around the rotational axis. Furthermore, the term "tire inner side" refers to the direction located inside the vehicle body when the pneumatic tire is assembled on a standard rim and mounted on the vehicle body, and the term "tire outer side" refers to the direction located outside the v...

Embodiment 2

[0086] image 3 It is a plan view of a tread portion, showing a pneumatic tire according to Example 2 of the present invention. In addition, members having the same functions as those of the pneumatic tire described in the above-mentioned embodiments are denoted by the same reference numerals, and overlapping descriptions are omitted.

[0087] In Example 2, such as image 3 As shown, this pneumatic tire 31 is provided with a first main groove 21 and a second main groove 22 extending in the tire circumferential direction on both sides of the equator line O1 on the tread. Between the second main groove 22 and the tire ground contact edge 13, a plurality of first lug grooves 25 and second lug grooves 32 extending in the tire width direction are alternately provided in the tire circumferential direction. In the first pattern groove 25, one end portion 25a communicates with the second main groove 22 located on the outermost side in the tire width direction, and the other end port...

Embodiment 3

[0113] Figure 4 It is a plan view of a tread portion, showing a pneumatic tire according to Example 3 of the present invention. In addition, members having the same functions as those of the pneumatic tire described in the above-mentioned embodiments are denoted by the same reference numerals, and overlapping descriptions are omitted.

[0114] In Example 3, such as Figure 4 As shown, this pneumatic tire 41 is provided with a first main groove 21 and a second main groove 22 extending in the tire circumferential direction on both sides of the equator line O1 on the tread. Between the second main groove 22 and the tire ground contact edge 13, a plurality of first lug grooves 25 and second lug grooves 26 extending in the tire width direction are alternately provided in the tire circumferential direction. In the first pattern groove 25, one end portion 25a communicates with the second main groove 22 located on the outermost side in the tire width direction, and the other end po...

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PUM

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Abstract

The aim of the invention is to provide an inflating tyre which increases driving stability through maintaining high water drainage capability and increases the silence through restricting the occurrence of noise. Two sides of equatorial line (O1) of the tread (12) are provided with a first main groove (21) and a second main groove (22) which extend along a direction of the circumference of tyre. A plurality of first riffled grooves (25) and second riffled grooves (26) which extend along the direction of the width of tyre are alternately provided on the direction of the circumference of the tyre. One end (25a) of one first riffled groove (25) is communicated with the second main trough (22) at the outmost outer side at the width direction of the tyre, and the other end (25b) is not communicated with a grounding end (13) of the tyre. One end (26a) of one second riffled groove (26) is not communicated with the second main riffled groove (22), and the other end (26b) is communicated with the grounding end (13) of the tyre. A prescribed superposition amount of the ends of the first riffled groove (25) and the second riffled groove (26) in the direction of the width of the tyre is set.

Description

technical field [0001] The present invention relates to a pneumatic tire suitable as a tire mounted on a general passenger vehicle. Background technique [0002] In conventional pneumatic tires, in order to ensure running stability on wet roads due to rain, etc., improvement of water drainage is an important factor, so generally, the improvement of water drainage is achieved by forming straight main grooves formed along the tire circumferential direction. improve. However, with this straight main groove, it is difficult to suppress the air column resonance noise, so it is difficult to reduce the noise. Therefore, in conventional pneumatic tires, a plurality of main grooves having different shapes are provided to achieve both drainage performance and quiet performance. [0003] For example, in the pneumatic tire described in Patent Document 1 below, a straight main groove is arranged at the center in the tire width direction, and arc-shaped curved main grooves are arranged ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/04
Inventor 斋藤贤介丹野笃
Owner THE YOKOHAMA RUBBER CO LTD
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