| 摘要 |
PURPOSE:To facilitate the disassembling and reassembling of a device body by providing a roll rubber holding portion for restraining the outward movement of a roll rubber provided on the inner peripheral face of an outer cylinder, on the large diameter portion of the inner peripheral face which is formed in a conical shape of the outer cylinder. CONSTITUTION:A device body consists of an outer cylinder 8 the inner peripheral face of which is formed in a cone shape, a core metal 10 which is inserted in the inside of the outer cylinder 8 and the inner peripheral face of which is formed in a cone shape, and a ring formed roll rubber 4 which is placed between the inner peripheral face of the outer cylinder 8 and the outer peripheral face of the core metal 10. In this structure, a projecting portion 9 as a roll-rubber holding portion which projects toward the shaft center side of the outer cylinder 8 is provided on the large diameter portion on the inner peripheral face of the outer cylinder 8. Also, a projecting portion 11 as a roll-rubber holding portion which projects in the radial direction is provided on the end of the core metal 10. Thereby, the roll rubber 4 can be held in a proper position facilitating the reassembling of the device body. |
