Title:
FLUID DAMPER DEVICE
Document Type and Number:
Japanese Patent JP2021021452
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 element holding parts 46 protruding from the first shaft part 43 in a radial direction. and valve elements 50 are arranged. When the rotor 30 is rotated in a first direction R1, the valve element 50 receiving fluid pressure rises up to block a gap between the case 20 and itself so that damper force is generated. The valve element holding part 46 includes a second protruding part 463 located on a side opposite to the first direction R1 with respect to the valve element 50, and the second protruding part 463 includes a fluid reservoir 70 recessed radially inward. When the rotor 30 is rotated to a direction opposite to the first direction R1, fluid 12 in the fluid reservoir 70 quickly moves to the valve element 50 to cause the valve element 50 to fall over, so that damper force is generated even in operation in a minute angle region.SELECTED DRAWING: Figure 5
Inventors:
OSHIMA YUUKI
Application Number:
JP2019138841A
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:
| JP2002364693A | 2002-12-18 |
Foreign References:
| CN103892764A | 2014-07-02 | |||
| CN200961659Y | 2007-10-17 |
Attorney, Agent or Firm:
Toru Kawai
Shin Kodaira
Kawaguchi Nobuko
Shin Kodaira
Kawaguchi Nobuko