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Title:
MAGNETIC FLUID DEVICE
Document Type and Number:
Japanese Patent JP2012037019
Kind Code:
A
Abstract:

To provide a compact magnetic fluid device, such as a shock absorber, that uses a magnetic fluid as an operation medium.

The magnetic fluid device constituting a shock absorber 10 includes a case body 11 storing a magnetic fluid F, and a piston 14 to which a piston rod 22 protruding externally from an end of the case body 11 is connected. The piston 14 forms magnetic fluid chambers 15a and 15b in the case body 11. The piston 14 and a coil assembly 20 form a fluid guide slit 36, and the slit 36 includes slit parts 33a and 33b extending in the radial direction. A magnetic field guide sleeve 21b is embedded in the coil assembly 20. In magnetic field crossing parts 43a and 43b formed by an end face of the magnetic field guide sleeve 21a, a magnetic field crossing them is formed.


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Inventors:
HORIKAWA AKIYOSHI
SHIODA KOJI
KAWAKAMI YUKIO
MOTOYAMA TSUYOSHI
Application Number:
JP2010180235A
Publication Date:
February 23, 2012
Filing Date:
August 11, 2010
Export Citation:
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Assignee:
KOGANEI LTD
SHIBAURA INST OF TECH
International Classes:
F16F9/53
Domestic Patent References:
JP2008175247A2008-07-31
JP2009216209A2009-09-24
JP2005076752A2005-03-24
JP2002195339A2002-07-10
JP2004169736A2004-06-17
JP2008215615A2008-09-18
JP2002257176A2002-09-11
Attorney, Agent or Firm:
Yamato Tsutsui
Yoshitaka Kozuka
Akiko Tsutsui



 
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