| 摘要 |
PURPOSE: A hydro bush is provided to prevent a crack in rubber by repetitively transferring a load on the rubber. CONSTITUTION: A hydro bush(100) comprises an external pipe(11), an internal pipe(12), and a damping body(14) comprised between the external pipe and the internal pipe. The damping body comprises a metallic inner sleeve(14a) with an internal diameter which is smaller than an external diameter of the internal pipe; a rubber body portion(14b) which circumscribes an internal sleeve; and a metallic intermediate pipe(14a) which circumscribes the body portion. The internal sleeve, the body portion, the intermediate pipe are integrally connected to each other by a vulcanization process. When a tool which has same diameter as the external diameter of the internal pipe internal sleeve and has bigger diameter than the internal sleeve is compulsorily inserted into the internal sleeve, the internal sleeve removes residual stress processed with vulcanization of the rubber body portion. The internal pipe is inserted into the enlarged internal sleeve. |
