| 摘要 |
PURPOSE:To increase a spring constant with respect to the axial direction by interposing a rubber resilient body between inner and outer cylinders, forming a rib at the center of one of the opposing inner and outer cylinders through the resilient body while forming at the end of the other a flange having a projection range superposed on the rib in the axial direction. CONSTITUTION:An inner cylinder 12 is arranged coaxially with a metal outer cylinder 11, and a rubber resilient body 13 is interposed therebetween in an integrated manner being stuck. A rib 14 is formed on the center of the outer circumferential surface of the inner cylinder 12 to protrude towards the inner circumferential surface of the outer cylinder 11 while a flange 15 is formed on a lower end of the outer cylinder. The rib 14 and the flange 15 have a common superposed projection area C in the axial direction. The resilient body 13 is moved by being compressed and the softness in the axial direction is controlled with the superposed rate accordingly. It is thus possible to have a spring constant high with respect to the axial direction. |
