| 摘要 |
A vibration isolating apparatus (10) which damps and absorbs vibrations from a vibration generating portion (11A). A first restricting passage (32), a second restricting passage (36) and a third restricting passage (34) are formed in a block member (18). Respective transit resistances of these restricting passages are different. One end portion of the first restricting passage is provided so as to be able to communicate with a main liquid chamber (28), and another end portion communicates with a sub-liquid chamber (30). One end portion of the second restricting passage (36) is provided so as to be able to communicate with the main liquid chamber (28), and another end portion has an open portion (18). One end portion of the third restricting passage (34) communicates with the sub-liquid chamber (30), and another end portion communicates with the second restricting passage (36). A rotor (52) is rotated to a first position at which the main liquid chamber (28) and the sub-liquid chamber (30) communicate via the first restricting passage (32) and to a second position at which the second restricting passage (36) communicates with the main liquid chamber. In accordance with the present invention, liquid passes through the first (32), second (36) and third (34) restricting passages, and moves reciprocally between the main liquid (28) chamber and one of the sub-liquid chamber (30) and the second restricting passage (36) in accordance with frequency of vibration. Accordingly, vibrations of a wide range of frequencies can be absorbed. <IMAGE> |
