| 摘要 |
PURPOSE:To enable desired vibration absorption by providing a valve body opened and closed by a rotary solenoid on plural limit passages communicating a fluid chamber and outside and opening and closing the limit passages according to the frequency. CONSTITUTION:A cylindrical rummber 16 is valcanizedly contacted to a base plate 10 and an air chamber 22 is formed inside. In the air chamber 22, an almost C-letter limit passage 24 is formed and one end thereof communicated to the air chamber 22, and the other end is communicated to a through hole 42 drilled on a base plate 10 and more communicated to a flexible pipe 44 from the vicinity of the through hole 42 and opened to outside. And the air chamber 22 is opened to outside by the through hole which is a limit passage. And on the base plate 10, a valve body 26 which can vary the length of the limit passage by opening and closing the through hole 42 and a rotary solenoid 28 rotatably driving the valve body 26 are fit. |
