Title:
FLUID DAMPER DEVICE
Document Type and Number:
Japanese Patent JP2021021453
Kind Code:
A
Abstract:
To provide a fluid damper device for generating damper force even in the operation in a minute angle region.SOLUTION: A fluid damper device 10 has a damper chamber 11 formed between a bottomed cylindrical case 20 and a first shaft part 43 of a rotor 30 arranged in the case 20. In the damper chamber 11, valve member mounting parts 46 protruding from the first shaft part 43 in a radial direction and valve members 50 are arranged. When the rotor 30 is rotated in a first direction R1, a valve element part 54 of the valve member 50 receiving fluid pressure blocks a flow path groove 48 so that damper force is generated. The valve member 50 includes an inclined surface 57 for receiving fluid pressure directed to radially inward when the rotor 30 is rotated in a direction opposite to the first direction R1. A gap between the valve member 50 and an inner peripheral face 27 of the case 20 is expanded by the fluid pressure acting on the inclined surface 57, so that the valve member 50 quickly moves to a flow path open position 50B. Thus, damper force is generated even in operation in a minute angle region.SELECTED DRAWING: Figure 5
Inventors:
OSHIMA YUUKI
Application Number:
JP2019138842A
Publication Date:
February 18, 2021
Filing Date:
July 29, 2019
Export Citation:
Assignee:
NIDEC SANKYO CORP
International Classes:
F16F9/14; A47K13/12
Domestic Patent References:
| JP2012219875A | 2012-11-12 | |||
| JP2019100535A | 2019-06-24 | |||
| JPH09133170A | 1997-05-20 | |||
| JP2009293697A | 2009-12-17 | |||
| JP2014224582A | 2014-12-04 | |||
| JP2019100532A | 2019-06-24 | |||
| JPH08109940A | 1996-04-30 |
Foreign References:
| KR101518262B1 | 2015-05-11 | |||
| WO2014192519A1 | 2014-12-04 |
Attorney, Agent or Firm:
Toru Kawai
Shin Kodaira
Kawaguchi Nobuko
Shin Kodaira
Kawaguchi Nobuko