| 摘要 |
PURPOSE:To improve durability without causing increase of mounting space and weight. CONSTITUTION:In internal and external peripheral members 2, 3, curve-shaped peripheral recessed parts 2a, 3a protruded to sides of elastic members 4 are formed over a total unit of bonding part to the elastic member 4, in an intermediate location in the direction of an axial line. In this way, stress concentration in a root part of the elastic member is relaxed to improve durability. |
