公开(公告)号：US20140158271A1

公开(公告)日：2014-06-12

申请号：US14182935

申请日：2014-02-18

Applicant: BRIDGESTONE CORPORATION

Inventor： Hideki MASUBUCHI ,  Keisuke NAKAMURA

IPC: B60C9/00 ,  B60C9/18

CPC classification number: B60C9/0007 ,  B60C9/2006 ,  B60C2009/0085 ,  B60C2009/2077 ,  B60C2009/209 ,  B60C2009/2093 ,  D07B1/0613 ,  D07B2201/2006 ,  D07B2201/2061 ,  D07B2801/24

Abstract: Provided is a steel cord for reinforcing a rubber article, which has an improved durability against so-called cuts, such as notches and perforations, which are generated in the case of treading on an obtusely or sharply pointed projection, without decreasing the strength in the axial direction of the cord, and without increasing the thickness in the radial direction, namely without increasing the weight of a tire, as well as a tire using the steel cord for reinforcing a rubber article as a reinforcing material, especially a construction vehicle tire. Also provided is a steel cord for reinforcing rubber articles with a multi-twisted structure formed by twisting a plurality of sheath strands formed by twisting a plurality of wires around a core strand formed by twisting a plurality of wires, and the core strand being constituted of an at least three-layer-twisted structure formed by twisting core filaments and sheath filaments. The lowest tensile breaking strength of filament bs and the tensile breaking strength of steel cord Bc satisfy the relationship represented by the following formula: bs/Bc×100≧0.65.

Abstract translation: 提供一种用于加强橡胶制品的钢丝绳，其具有改进的耐受性，即在踩在钝角或尖锐的突出部上的情况下产生的所谓的切口（例如切口和穿孔），而不会降低 并且不增加径向厚度，即不增加轮胎的重量，以及使用钢帘线加强作为增强材料的橡胶制品，特别是工程车辆轮胎的轮胎。 还提供了一种用于加强橡胶制品的钢丝帘线，其具有通过扭转通过扭绞多根丝线而形成的多股线缠绕而形成的多根鞘线而形成的多股线条，芯线由 通过扭绞芯丝和鞘细丝形成的至少三层扭曲结构。 细丝bs的拉伸断裂强度最低，钢丝帘线Bc的拉伸断裂强度满足下式所示的关系：bs / Bc×100≥0.65。