Title:
回転ダンパー
Document Type and Number:
Japanese Patent JP6820010
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a rotary damper capable of improving durability by simplifying a structure while enabling ON/OFF control to be performed on an attenuation force of the rotary damper.SOLUTION: A rotary damper comprises: an attenuation force generation part 7 in which a functional fluid F is interposed, for generating an attenuation force by passing a magnetic flux loop R between a rotor 5 and a case 3 that are relatively freely rotatable; a permanent magnet 9 including at least a pair of magnetic poles 27a and 27b for generating the magnetic flux loop R over the attenuation force generation part 7; and a case body 13 as a switching part which is disposed between the attenuation force generation part 7 and the permanent magnet 9 and changes a relative position to the permanent magnet 9, thereby switching between an attenuation force generation state where the magnetic flux loop R is spread over the attenuation force generation part 7, and an attenuation force non-generation state where a magnetic flux loop R' is short-circuited without being spread over the attenuation force generation part 7.SELECTED DRAWING: Figure 3
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Inventors:
Masao Teraoka
Yoshizumi Masumoto
Yoshizumi Masumoto
Application Number:
JP2017047735A
Publication Date:
January 27, 2021
Filing Date:
March 13, 2017
Export Citation:
Assignee:
Fuji Latex Co., Ltd.
International Classes:
F16F9/12; E05F3/14; F16D63/00; F16F9/53
Domestic Patent References:
| JP2013167318A | ||||
| JP2008202744A | ||||
| JP7301271A | ||||
| JP2005051905A | ||||
| JP2014020539A | ||||
| JP2011247403A | ||||
| JP2015183694A | ||||
| JP2011256889A | ||||
| JP59039908U | ||||
| JP2004343955A |
Foreign References:
| US20120085613 |
Attorney, Agent or Firm:
Yuichi Sudo
Daisuke Sudo
Daisuke Sudo