| 摘要 |
PURPOSE:To provide a fluid enclosing type vibration control device which can provide excitation force for a vibration plate constituting a part of a wall pant in a fluid chamber sufficiently and stably and can provide an excellent vibration control effect against input vibration in a wide frequency area. CONSTITUTION:A closed magnetic path having a circular gap part, 62 is formed by connecting yoke members 54, 56, 60 to a permanent magnet 50 arranged in the rear of a vibration plate 27, while a movable coil 68 connected to the vibration plate 27 is arranged in the inside of the gap part 62, and excitation force is applied to the vibration plate 27 by exciting the movable coil 68. In addition, the second mounting metallic part 12, in which an electromagnetic force generating means consisting of the permanent magnet 50, the movable coil 68, and the like, is mounted on an engine side serving as a vibration body. |
