| 摘要 |
PROBLEM TO BE SOLVED: To achieve a decrease in dynamic spring constant in a columnar resonance region of a tire without increasing hardness of an elastic body of a liquid enclosing bush. SOLUTION: An outer cylinder 11 and an inner cylinder 14 are connected to each other via a bush rubber 21. Front liquid chambers RFU, RFL, and back liquid chambers RRU, RRL communicate with each other via first communicating paths O1 , O1 . The upper liquid chambers RFU, RRU and the lower liquid chambers RFL, RRL, communicate with each other via second communicating paths O2 , O2 and a third communicating path O3 . When a load of 80-250 Hz is input in a direction Z-Z', a peak of a dynamic spring constant is shifted toward a side of high frequency by the third communicating path O3 , thereby decreasing the dynamic spring constant in a columnar resonance region (220-250 Hz) of a tire so as to reduce load noise. |
