胎趾(bead toe)在轮胎的胎圈内侧的尖端部位,胎踵(bead heel)在胎圈外侧与轮辋座圆角接触的部位。这两者是胎体的基础部分,也是外胎与轮辋的固定点,可承受轮胎充气后所受的应力,保护轮胎钢丝圈(刚性环)很好地发挥包胶紧固作用。 胎趾和胎踵虽然不显眼,但它的作用不可小视。胎趾在深式轮辋上有 Bead toe At the point of the inner tip of the bead of the tire, the bead heel is in contact with the rim seat at the outside of the bead. Both of these are the basic components of the carcass and are also the anchoring points for the tire casing and the rim. They can withstand the stresses experienced by the tire after it is inflated to protect the tire traveler (rigid ring) from the entrapment. Although the toe and the fetal heel are inconspicuous, its role can not be underestimated. The toe is on the deep rim