| 摘要 |
<p>The present invention relates to a liquid sealed type vibration isolator provided in the interior thereof with a partition 10 dividing an inner chamber into a main liquid chamber 7 and two, i.e. first and second auxiliary liquid chambers 8, 9, first and second orifices 13, 14 communicating the two auxiliary liquid chambers and main liquid chamber with each other, and first and second diaphragms 4, 11 forming parts of walls of the two auxiliary liquid chambers, a movement of the second diaphragm 11 being controlled by switching the introduction into a change-over chamber 12, which is adjacent to the second diaphragm 11, of a negative pressure and atmospheric pressure from one to the other. The partition 10 is formed so that it can be assembled tentatively in the air, in which it is rendered possible to combine plural constituent parts together easily without causing the dislocation thereof to occur, minimise the relative displacement of the constituent parts ascribed to variation thereof with the lapse of time, and retain the sealability of the same parts at a high level. To attain such a structure, the partition 10 is formed of a main partition member 15 forming the first orifice 13 on an outer circumferential portion thereof and provided with the second diaphragm 11 on the portion thereof which is on the side of the main liquid chamber 7, a partition plate member 16 engaged with and fitted firmly around an outer circumference of the main partition member 15 by a caulking device and pressing a circumferential edge portion of the second diaphragm 11 to form the second auxiliary liquid chamber 9 and second orifice 14, and a partition receiving plate 17 fixed to a lower surface of the main partition member 15 by a press fitting device. This partition 10 is fitted firmly in a main metal member 1, and an outer circumferential edge portion of the partition receiving plate 17 is caulked to the main metal member 1. <IMAGE></p> |
