公开(公告)号：US20170057301A1

公开(公告)日：2017-03-02

申请号：US15201760

申请日：2016-07-05

申请人： SUMITOMO RUBBER INDUSTRIES, LTD.

发明人： Keisuke HASHIMOTO ,  Eisuke HIROSUE

IPC分类号： B60C17/00 ,  B60C15/06

CPC分类号： B60C17/0009 ,  B60C15/0045 ,  B60C15/0603 ,  B60C15/0607 ,  B60C2015/061 ,  B60C2015/0614 ,  B60C2015/0617 ,  B60C2015/0621 ,  B60C2015/0639 ,  B60C2015/0642 ,  B60C2015/0682 ,  B60C2017/0063

摘要： In an apex 34 of a tire 2, a reinforcing portion 48 is located inward of a main body 46 in an axial direction. When a position on an outer surface of the tire 2 at which position a height from a BBL is 14 mm is defined as a first point P1 and a position on the outer surface of the tire 2 at which position a height from the BBL is 20 mm is defined as a second point P2, the reinforcing portion 48 overlaps the first point P1 and the second point P2 in a radial direction. A loss tangent of the reinforcing portion 48 is equal to a loss tangent of the main body 46 or less than the loss tangent. A hardness of the reinforcing portion 48 is equal to a hardness of the main body 46 or greater than the hardness.

摘要翻译： 在轮胎2的顶点34中，加强部48沿轴向位于主体46的内侧。 将轮胎2的与BBL的高度成为14mm的位置的位置定义为第一点P1，在距离BBL的高度为20°的轮胎2的外表面上的位置 mm被定义为第二点P2，加强部分48在径向上与第一点P1和第二点P2重叠。 加强部分48的损耗角正切相当于主体46的损耗角正切或小于损耗角正切。 加强部分48的硬度等于主体46的硬度或大于硬度。