| 摘要 |
PURPOSE:To set the spring force of a leaf spring to a lower value and also make the impression current to the magnetic force of a magnetic body set to a lower value by forming a tapered face of a specified angle on a part of a face opposing the magnetic body and a vibration plate. CONSTITUTION:Opposed to a vibration plate 6, a magnetic body 10 comprising a detachable member 7, a permanent magnet 8, and an electromagnet 9 on the face of this detachable member 7 opposing to the vibration plate 6 is provided. In addition, the upper step 22 and the lower step 23 of the step 15 formed on a part of the face of the vibration plate 6, which is opposed to the magnetic body 10 are connected by a tapered face 24, and a part of the gap 11 formed between the vibration plate 6 and the magnetic body 10 is made to vertically bend by these steps. This constitution enables magnetic force-gap line to be nearly a straight line, and as a result, the spring force of a leaf spring 5 and the magnetic force of the permanent magnet of the magnetic body can be set to a lower value. Thus, an active mount which is excellent in economy and energy saving is obtained. |
