To attach a self-holding mechanism to an oil damper without leaking of oil.
In a damper device 1, a self-holding mechanism 3 providing a moderate feeling to turning movement of a rotor 23 is detachably attached to an oil damper 2 having a sealed space S filled with oil in an interior. The self-holding mechanism 3 includes a self-holding holder 5 including a protruding part 54 rotating integrally with a rotor 23 and changing an angle position around a rotation axis X; a self-holding case 4 including a swelling part 48 abutted by the protruding part 54 at a predetermined angle around the rotation axis X; and a coil spring 6 energizing in a direction of abutting the protruding part 54 and the swelling part 48; and it is configured to provide a moderate feeling to the turning movement of the rotor 23 at a predetermined angle in which a toilet seat is in a self-holding position. A rib 214 protruding toward a radial outer side is provided in a periphery of the oil damper 2; and in the self-holding case 4, a rib housing part 411 is engaged with the rib 214 being a part not participating in forming of the sealed space, and it is fixed to the oil damper 2 so as to not rotate.
| JPH10141412A | 1998-05-29 | |||
| JP2004194772A | 2004-07-15 |
Kimio Kikutani
Tetsuro Maki
Maki Reiko