Liquid filled type vibration isolator
US6722641B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2001 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Nov 17, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F13/264
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
There is provided a liquid filled type vibration isolator in which damping action for both engine idling vibration and engine shake is carried out with the use of a single orifice. In the liquid filled type vibration isolator comprising a rubber-like insulator for absorbing and isolating vibration transmitted from an oscillating body, a main chamber having a chamber wall formed by a part of the insulator, and hermetically charged therein with liquid, an auxiliary chamber connected to the main chamber through the intermediary of an orifice and having a chamber wall a part of which is formed by a first diaphragm, a partition member partitioning between the main chamber and the auxiliary chamber, a working chamber defined and formed with respect to the main chamber by means of a second diaphragm, wherein the second diaphragm has a deforming stiffness which is higher than that of the first diaphragm. The liquid in the orifice effects resonant oscillation with a vibration input during engine idling operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.