| 摘要 |
PURPOSE:To perform a sufficient damping action against vibrations of a wide range from a small amplitude to a large amplitude by providing pressure- sensitive valves between fluid chambers and making the friction resistance when the fluid passes the pressure-sensitive valves variable. CONSTITUTION:Pressure-sensitive valves 8A, 8B are provided on a partition wall 7 dividing a fluid chamber 6 into two. These pressure-sensitive valves 8A, 8B are opened by the fluid pressure, and the flow path area is changed in response to the magnitude of the pressure. A variable mechanism is provided so as to variably adjust either one or both of the closing pre-pressure and valve port area. This variable mechanism is adjusted in response to the magnitude of vibrations and is formed with a spring receiving seat 11, an actuator 13, a solenoid 15, bellows 16, for instance. |
