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Patent Searching and Data


Title:
VIBRATION-ISOLATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/035619
Kind Code:
A1
Abstract:
A vibration-isolating device having improved sealing ability and whose spring constant can be changed in a moment to quickly increase it. An intermediate tube (16) is fitted on the inner peripheral surface of an outer tube fitting (12), and an installation fitting (22) and the intermediate tube (16) are elastically connected by a rubber elastic body (24). A circular tube section (36A) of a yoke forming member (36) is placed in the intermediate tube (16), at a position on its inner peripheral side, and a coil (46) is placed between the intermediate tube (16) and the yoke forming member (36). A pressure receiving liquid chamber (40), a portion of the inner peripheral surface of which liquid chamber is formed from the rubber elastic body (24), and a sub-gas chamber (42) elastically deformable by a diaphragm (38) are interconnected via an orifice (44) to enable magnetically responsive fluid to flow between each other. A yoke section (36C) is placed on the inner peripheral side of the circular tube section (36A) such that the yoke section (36C) is located in a magnetic path produced when electricity flows through the coil (46).

Inventors:
KOJIMA HIROSHI (JP)
Application Number:
PCT/JP2007/067860
Publication Date:
March 27, 2008
Filing Date:
September 13, 2007
Export Citation:
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Assignee:
BRIDGESTONE CORP (JP)
KOJIMA HIROSHI (JP)
International Classes:
F16F13/30; B60K5/12; F16F15/02
Foreign References:
JPH0281939U1990-06-25
JPH02203001A1990-08-13
JPH0835536A1996-02-06
JPH0281939A1990-03-22
Other References:
See also references of EP 2065616A4
Attorney, Agent or Firm:
SUGIMURA, Kenji et al. (3-2-1 Kasumigaseki, Chiyoda-ku, Tokyo 13, JP)
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