| 摘要 |
<p>PROBLEM TO BE SOLVED: To satisfy a required spring characteristic by integrally forming an inner cylinder flange with an axial outer end of the inner cylinder, integrally forming an outer cylinder flange at a position axially inner than the inner flange at an axial end of an outer cylinder, and vulcanization bonding flange rubber part made of rubber elastic body to between the inner and outer flanges. SOLUTION: Around the whole circumference of an axial outer end of an inner cylinder 11, an inner cylinder flange 17 rising in an orthogonal manner to an axis is integrally formed. An outer cylinder flange 18 rising in the orthogonal manner to the axis is openwise formed on a position axially inner than the inner flange 17 at an axially outer end of an outer flange 12. A rubber elastic body 13 is interposed between the inner and outer cylinders 11, 12 to vulcanization bond the two 11, 12 to each other, and also is interposed between the inner and outer flanges 17, 18 to vulcanization bond the two 17, 18 to thereby form a flange rubber part 20. With this constitution, by the existence of the flanges 17, 18 and the flange rubber part 20, the rigidity of spring in the forward and rearward direction can be improved.</p> |
