| 摘要 |
PURPOSE:To restrain resonance to enhance the characteristic of control stability in a suspension device having a longitudinal rod member, by forming liquid chambers in rubber bushings, and by communicating the chambers with each other through a communication passage in the rod member. CONSTITUTION:When an exciting force due to the dynamic unbalance of wheels and the like, is applied having a frequency which is equal to the frequency of a resonant vibration frequency (f), a relative displacement occurs between an axle casing and a vehicle body, and therefore, the supporting span (l) of a rod 4 is changed thereby. Accordingly, the rubber bushings 11, 12 are deformed in accordance with variations in the span (l), and therefore, one of liquid chambers 15, 16 is enlarged while the other is contracted so that liquid W flows between both liquid chambers 15, 16. Thereby, the exciting force is converted into fluid energy and absorbed. With this arrangement, it is possible to restrain resonance to enhance the characteristic of control stability. |
