| 摘要 |
PURPOSE:To suitably suppress or isolate vibration of an engine in the all running condition of a vehicle, by variably controlling the moving distance of a movable separator plate arranged between fluid chambers in accordance with an operating condition of the engine. CONSTITUTION:As a rotary shaft 11, eccentrically shaped by forming its center into a small contour part, turns the small contour part eccentrically rotates, and a cylindrical member 7 vertically moves to adjust an opposed distance between stopper faces 43a, 71a, thus controlling the moving distance of a movable separator plate 10. Since the second fluid chamber B forms its chamber wall by a freely deformable elastic sheet 8 of rubber in small thickness, a change of internal pressure in the first fluid chamber A can be absorbed by movement of the movable separator plate 10 when its movement is controlled to a large distance. If the movement of the movable separator plate 10 is controlled to a small distance, the change of the internal pressure in the first fluid chamber A can not be absorbed by the movable separator plate 10, and the fluid chamber A communicates to the third fluid chamber C, forming its chamber wall by an elastic material sheet 9 of rubber in large thickness, through a throttling hole F, thus large damping force of vibration is generated. |
