公开(公告)号：JP2011225133A

公开(公告)日：2011-11-10

申请号：JP2010097600

申请日：2010-04-21

Applicant: Yokohama Rubber Co Ltd:The ,  横浜ゴム株式会社

Inventor： SHIMIZU KENTO

IPC: B60C15/04 ,  B29D30/48 ,  D07B1/06

CPC classification number: D07B1/062 ,  D07B2201/2017 ,  D07B2501/2053

Abstract: PROBLEM TO BE SOLVED: To provide a pneumatic tire that is advantageous in attaining improvement of uniformity.SOLUTION: A bead core 18 is configured such that a belt-like member 26 having a width larger than a thickness is wound around in several times on the periphery of the tire axial center. The belt-like member 26 is composed of a plurality of bead wires 24 and a topping rubber 28 covering them. The bead wires 24 have an equilateral triangle in the cross section. The belt-like member 26 is structured such that the bead wires 24 arranged while one apex (corner part) of the equilateral triangle faces outward in the tire radial direction and those arranged while one apex faces inward in the tire radial direction are alternately arrayed in the tire width direction. All apexes of the equilateral triangle forming the cross section of the bead wires 24 are chamfered by a circular arc that has a radius R of 10-20% of the length L of one side of the equilateral triangle.

Abstract translation: 解决的问题：提供有利于提高均匀性的充气轮胎。 解决方案：胎圈芯18构造成使得具有大于厚度的宽度的带状构件26在轮胎轴向中心的周边上多次缠绕。 带状构件26由多个胎圈线24和覆盖它们的顶部橡胶28组成。 胎圈线24在横截面中具有等边三角形。 带状构件26被构造成使得当等边三角形的一个顶点（角部）在轮胎径向方向上向外布置的胎圈线24和在一个顶点在轮胎径向方向上向内时布置的胎圈线24交替排列在 轮胎宽度方向。 形成胎圈丝24的横截面的等边三角形的所有顶点都被圆弧倒角，圆弧的半径R为等边三角形一侧的长度L的10-20％。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP4648561B2

公开(公告)日：2011-03-09

申请号：JP2001106172

申请日：2001-04-04

Applicant: 住友ゴム工業株式会社

Inventor： 正俊 田中

IPC: B60C17/00 ,  D07B1/06 ,  B60C15/04

CPC classification number: D07B1/062 ,  D07B2201/2017 ,  D07B2501/2053