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2. 发明公开

EP0615868A1 Pneumatic radial tire 失效
标题翻译：充气子午线轮胎
公开(公告)号：EP0615868A1
公开(公告)日：1994-09-21
申请号：EP94301710.3
申请日：1994-03-10
申请人： BRIDGESTONE CORPORATION
发明人： Ushikubo, Hisao , Ubukata, Toru
IPC分类号： B60C15/06
CPC分类号： B60C15/06 , B60C15/05 , Y10S152/09 , Y10T152/10819 , Y10T152/10828 , Y10T152/10846
摘要： The pneumatic radial tire of the invention has a pair of bead portions (20) containing bead cores (12) therein and is characterized in that the bead core (12) is constructed by substantially winding at least one metal wire, and a bead toe reinforcing rubber stock (18) with a JIS hardness of 80° - 98° is arranged inward of the bead core (12) in an axial direction of the tire, the width (L2) of the bead toe reinforcing rubber stock (18) is in a range of 0.5 - 2.0 times the width (L3) of the bead core (12) in the axial direction, and the width (L1) from the outer edge of the bead core (12) to the inner edge of the bead portion (20) in the axial direction of the tire is in a range of 1. 1 - 3. 0 times the width (L3) of the bead core (12) in the axial direction of the tire, and the side region in the axial direction of the tire and the inner region in the radial direction of the tire around the bead core and the bead toe reinforcing rubber stock (18) is substantially reinforced by a chafer (22) made of organic fiber cords.
Thus there is provided a pneumatic radial tire with improved riding comfortability and cornering performance without increase of the weight.
摘要翻译：本发明的充气子午线轮胎具有其中包含胎圈芯（12）的一对胎圈部分（20），并且其特征在于胎圈芯（12）通过基本缠绕至少一根金属丝而构造，并且胎趾加强件在胎圈芯12的轮胎轴向内侧配置有JIS硬度为80°〜98°的橡胶原料18，胎趾补强橡胶原料18的宽度L2为所述胎圈芯（12）的轴向宽度（L3）的0.5倍〜2.0倍的范围，和从所述胎圈芯（12）的外缘至所述胎圈部的内缘的宽度（L1） 20）在轮胎的轴向上的宽度（L3）为轮胎轴向上的胎圈芯（12）的宽度（L3）的1.1-3.0倍的范围内，并且轴向上的侧面区域轮胎和胎圈芯周围的轮胎径向内侧区域以及胎趾加强橡胶原料（18）基本上通过磨损加强 r（22）由有机纤维帘线制成。因此，提供一种在不增加重量的情况下具有改善的乘坐舒适性和转弯性能的充气子午线轮胎。

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