| 摘要 |
PURPOSE: To prevent a movable piece and an exciting coil or the like from being moved by a dead weight or the like when an engine is mounted. CONSTITUTION: A main chamber 6 and a sub-chamber 7 are arranged above and below by sandwiching a partition plate 2 between them. An outside diaphragm 29 is arranged to partition a part between the sub-chamber 7 and an air chamber 8. A vibrator 1 composed of a movable piece 11 or the like is arranged to forcedly excite liquid of the main chamber 6. This vibrator 1 is composed of a rod 12 whose one end is connected to the movable piece 11 and other end is connected to a bobbin 131 having an exciting coil 13, a permanent magnet 14 to perform a mutual action with the exciting coil 13, yokes 15 and 16 to support the permanent magnet 14 or the like. A cylinder chamber 211 is arranged around the movable piece 11, and an inside diaphragm 22 is arranged so as to block up a lower part of this cylinder chamber 211. The rod 12 is arranged in a central part of the inside diaphragm 22, and the inside diaphragm 22 and the outside diaphragm 29 are formed in a discontinuous condition. |
