Title:
回転ダンパー
Document Type and Number:
Japanese Patent JP6712493
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a rotary damper capable of decreasing power consumption when target attenuation force is obtained by changing initial attenuation force.SOLUTION: A rotary damper is equipped with: a case 3 made from a magnetic body; a rotator 5 made from a magnetic body which is arranged so as to relatively rotate in the case 3; a working fluid F which is stored in the case 3, is interposed between the case 3 and the rotator 5, and increases viscosity when a magnetic flux passes through; a supporting portion 19 which is protrusively provided into the case 3 at an axis portion of the case 3; an electromagnetic coil 7 attached on a supporting surface 19c on an outer periphery of the supporting portion 19; and a permanent magnet 9 which configures a part of the supporting portion 19. The permanent magnet 9 forms an initial magnetic flux M1 of a magnetic flux passing through the working fluid F through the supporting portion 19, and the electromagnetic coil 7 forms a control magnetic flux M2 cancelled or attached with regard to the initial magnetic flux M1 by energization through the supporting portion 19, thereby adjusting an actual magnetic flux acted on the working fluid F.SELECTED DRAWING: Figure 1
Inventors:
Masao Teraoka
Sakamaki Nori
Yoshizumi Masumoto
Sakamaki Nori
Yoshizumi Masumoto
Application Number:
JP2016097722A
Publication Date:
June 24, 2020
Filing Date:
May 16, 2016
Export Citation:
Assignee:
Fuji Latex Co., Ltd.
International Classes:
F16F9/12; F16D63/00; F16D65/16; F16F9/46; F16F9/53
Domestic Patent References:
| JP2014101999A | ||||
| JP2008202744A | ||||
| JP2005507061A |
Attorney, Agent or Firm:
Yuichi Sudo
Daisuke Sudo
Daisuke Sudo