| 摘要 |
PROBLEM TO BE SOLVED: To provide an anti-vibration bushing capable of reducing a spring constant in the prying direction, increasing the spring constant in the direction perpendicular to the axis, furthermore capable of making spring characteristics linear closely for the load input in the direction perpendicular to the axis. SOLUTION: An intermediate cylinder 16 is provided between an inner cylinder 12 and an outer cylinder 14. An inside elastic body 18 to connect the inner cylinder 12 and the intermediate cylinder 16, and an outside elastomer 20 to connect the intermediate cylinder 16 and the outer cylinder 14 are formed of a rubber elastomer. A first bulging-out portion 22 bulging out in the outward Y1 side perpendicular to the axis is formed at the axial center of the inner cylinder 12. A second bulging-out portion 26 bulging out in the outward Y1 side perpendicular to the axis is formed at the axial center of the intermediate cylinder 16 to surround thereof. A plurality of through-holes 38 passing through the intermediate cylinder 16, and connecting the inside elastic portion 18 and the outside elastic portion 20 are arranged in parallel in the circumference C in the second bulging-out portion 26. COPYRIGHT: (C)2009,JPO&INPIT |
