| 摘要 |
PROBLEM TO BE SOLVED: To make a ratio of wrenched rigidity and rigidity in the shaft direction larger in a suspension bush, and to prevent wrinkles of an outer cylinder metal fixture or cracking of the metal fixture generated at the time of intensive pressurizing working. SOLUTION: A spherical part 21A is provided at a central part of an inner cylinder metal fixture 21, and the outer cylinder metal fixture 22 is arranged in spaced apart concentrically so as to face it. The thickness of the vicinity of both end edge parts of the outer cylinder metal fixture 22 is reduced beforehand toward the edge parts, a bent part 22A can be formed approximately rectangularly by executing the intensive pressurizing working to the vicinity of the both end edge parts, and the ratio of the wrenched rigidity and rigidity in the shaft direction can be made larger since the rubber elastic body 23 and the bent part 22A are brought into pressure contact. Furthermore, the wrinkles or the cracking of the metal fixture are not generated at the bent part 22A after the intensive pressurizing working since the thickness of the vicinity of the both end edge parts is reduced. |
