| 摘要 |
PURPOSE:To permit a vehicle to comfortably run all over by providing a fluid chamber and an air chamber in a bush whereby assuring a satisfactory damping characteristic over low frequency and large amplitude regions and an excellent vibration transmission characteristic over high frequency and micro-amplitude region. CONSTITUTION:An inner cylinder 1 is fixedly mounted on an inside elastic member 3, while an outer cylinder 2 fixedly mounted on an outside elastic member 4. Fluid chambers 5 are provided on the inner elastic member 3 at symmetrical positions thereof perpendicularly to an axis thereof. The two opposing fluid chambers 5 are communicated with each other through a communication hole 7 formed with a ring material 6 fitted to the internal cylinder 1 from the outside thereof. An air chamber 8 is provided in the outside elastic member 4, and the chamber 8 is formed by the external cylinder 2 and disposed adjoining to the fluid chamber 5 via a bellows 9. Any high frequency and micro-amplitude vibration can be, if produced, absorbed by the air chamber 8, while vibration of low frequency and large amplitude can be prevented from transmitted due to damping produced as a fluid passes through the communication hole 7. |
