Patent ID: 7322450

Claim:
A rotating damper, comprising: a rotating shaft ( 2 ) that is provided inside a casing ( 1 ) and rotatable relatively to the casing ( 1 ); first divider walls ( 15 ) that are provided on an inner periphery of the casing ( 1 ) and in either direct or indirect contact with the rotating shaft ( 2 ); second divider walls ( 17 ) that are provided on an outer periphery of the rotating shaft and in either direct or indirect contact with the inner periphery of the casing; a plurality of pressure chambers (A, B, C, D) defined by the first and second divider walls ( 15 , 17 ); a limiting mechanism for limiting a flow of fluid between the pressure chambers; a flow passage ( 15 a ) provided in the first divider wall ( 15 ) for communication of the fluid between the pressure chambers; and a check valve mechanism for permitting a flow of fluid in one direction from one of the pressure chambers to an adjacent pressure chamber of the pressure chambers, and inhibiting a flow of fluid from the adjacent pressure chamber to the one pressure chamber, the check valve mechanism comprising: curving portions ( 16 a ) moving on and along an inner periphery of the casing ( 1 ) and supported between the casing ( 1 ) and the second divider wall ( 17 ); and valving portions ( 16 b ) each joining to the curving portion ( 16 a ), wherein depending upon turning movement of the check valve mechanism, each of the valving portions ( 16 b ) opens the flow passage ( 15 a ) for the flow of fluid from the one pressure chamber to the adjacent pressure chamber, and closes the flow passage ( 15 a ) for the flow of fluid from the adjacent pressure chamber to the one pressure chamber.