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Patent Searching and Data


Title:
CYLINDER DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/057213
Kind Code:
A1
Abstract:
This cylinder device enables stable mounting of an inner cylinder and an intermediate cylinder to a rod guide and also allows minimization of the leakage of working fluid. The cylinder device is equipped with: an inner cylinder in which a functional fluid, which is changed in fluid properties by an electrical field or a magnetic field, is sealed, and into which a rod is inserted; an outer cylinder which is provided outside of the inner cylinder; an intermediate cylinder which is provided between the inner cylinder and the outer cylinder, where a path is formed, between the intermediate cylinder and the inner cylinder, through which the functional fluid flows from one end to the other end in the axial direction of the cylinder device in response to the forward and backward movement of the rod, and serves as an electrode or a magnetic pole; a rod guide which is provided so as to close one end of each of the inner cylinder and the outer cylinder, and supports the rod; a spacer which has one end located toward the rod guide and the other end located toward one end of the intermediate cylinder, and is fitted to the inner cylinder; and an elastic seal member which is disposed at the other end of the spacer, and seals one end of the path between the intermediate cylinder and the inner cylinder.

Inventors:
TANABE UMI (JP)
KIMURA YUSEI (JP)
Application Number:
PCT/JP2016/078153
Publication Date:
April 06, 2017
Filing Date:
September 26, 2016
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F16F9/53; F16F9/32; F16F9/46
Foreign References:
JPH0610984A1994-01-21
JPH10110768A1998-04-28
JP2013204799A2013-10-07
JP2014199078A2014-10-23
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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