Rotary damper

摘要

A rotary damper has a movable valve (27) supported on a support projection (26) radially outwardly projecting from a shaft (24) of a rotary member (25) which is rotatably disposed in a chamber (21) filled with a viscous fluid (22) in a casing (23). Depending on the direction in which the rotary member rotates in the chamber, the movable valve opens or closes a fluid path (34) defined between the movable valve and an inner circumferential surface of the casing. The movable valve may be angularly movably supported on a support projection which is of a circular cross-sectional shape or radially movably supported on a support projection which is of a rectangular cross-sectional shape. $$