| 摘要 |
PROBLEM TO BE SOLVED: To provide an active mount capable of stable control by restricting the dispersion of the bending moment of a leaf spring 55 elastically supporting a vibration plate 53. SOLUTION: This active mount has an actuator 5 which is arranged facing to a first liquid chamber A and gives pulsative pressure countervailing the change in the liquid pressure in the first liquid chamber A by vibrating a vibration plate 53 made of a magnetic body elastically energized by the leaf spring 55 by the co-operation of an electromagnet 51 and a permanent magnet 52. The leaf spring 55 is supported by a case 1 at both faces in the thickness direction of the external peripheral section through metal rings 6 and 6 which oppose to each other and have a circular cross section. The metal rings 6 and 6 have a cross section brought into line contact with the leaf spring 55. For this reason, the bending moment of the external peripheral section of the leaf spring 55 when the spring 55 is bent becomes approximately 0. The dispersion of the bending motion is thus restricted. |
