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Tire

A tire and tire circumferential technology, applied to tire parts, tire tread/tread pattern, transportation and packaging, etc., can solve problems such as stone inclusions easily, and achieve the effect of improving wear resistance

Pending Publication Date: 2020-09-15
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a structure in which only the groove width is set narrow, there is a problem that stone inclusions are likely to occur

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Hereinafter, an embodiment of the present invention will be described based on the drawings.

[0029] figure 1 , figure 2 It is a development view of the tread portion 2 of the tire of the present embodiment. Such as figure 1 , figure 2 As shown, the tire of this embodiment has a tread portion 2. This tire is suitable, for example, as a heavy-duty tire mounted on a commercial vehicle or the like that has many opportunities to run on unpaved roads, but its use is not limited to this.

[0030] A first main groove 3 is formed in the tread portion 2. The first main groove 3 continuously extends linearly or in a zigzag shape in the tire circumferential direction. The first main groove 3 of the present embodiment is a zigzag-shaped circumferential groove curved in a region communicating with the first lateral groove 6 and the second lateral groove 8 described later.

[0031] The tread portion 2 is divided by the first main groove 3 into a first land portion 4 located on one sid...

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PUM

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Abstract

Provided is a tire capable of easily inhibiting stone trapping while improving wear resistance. A tread portion (2) is divided into a first land portion (4) and a second land portion (5) by a first main groove (3) continuously extending in a tire circumferential direction. A first lateral groove (6) extending in a tire axial direction from the first main groove (3) and having a terminating end (6e) in the first land portion (4) is formed in the first land portion (4). A first lateral sipe (7) extending in the tire axial direction from the first main groove (3) is formed in the second land portion (5). A first imaginary extension groove (6v) obtained by extending the first lateral groove (6) into the first main groove (3) overlaps with a first imaginary extension sipe (7v) obtained by extending the first lateral sipe (7) into the first main groove (3).

Description

Technical field [0001] The present invention relates to a tire having a tread portion. Background technique [0002] Conventionally, there has been known a tire that is configured to suppress the intrusion of rubble into the groove of the tread portion, that is, the inclusion of stones (for example, refer to Patent Document 1). [0003] Patent Document 1: Japanese Patent Application Publication No. 2015-110384 [0004] As a technique for improving the wear resistance of tires, a structure to narrow the groove width is known. However, in a structure in which only the groove width is set narrow, there is a problem that stone inclusions are likely to occur. Therefore, in addition to the technique disclosed in Patent Document 1 described above, further improvements are desired. Summary of the invention [0005] The present invention is proposed in view of the above actual situation, and its main purpose is to provide a tire that can improve wear resistance and easily suppress stone inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/12B60C11/03
CPCB60C11/1236B60C2011/0344B60C2011/0358B60C11/04B60C11/0306B60C2011/0381B60C2011/0383B60C11/0309B60C2011/1209B60C2011/0386B60C11/0316B60C11/1315
Inventor 田头政雄
Owner SUMITOMO RUBBER IND LTD
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