Patent ID: 7245855

Claim:
An opening and closing device, comprising: a fixed side member; a movable side member retained by the fixed side member to be opened and closed; a wire member that is fixed at one end thereof to one of a turning front end of the movable side member and the fixed side member on a side of the turning front end of the movable side member; a rotary member, which is provided in the other of the fixed side member and the movable side member, has the wire member wound therearound when the movable side member is closed, and the rotary member is rotated in such a drawing direction as to draw out the wire member according to the opening of the movable side member; an elastic member that is provided in the rotary member and accumulates an elastic force which causes the rotary member to rotate reversely to the rotation of the drawing direction due to rotation of the rotary member in the drawing direction; a damper which reduces a speed of the rotation of the rotary member; and rotation transmitting means which selectively transmits the rotation of the rotary member to the damper, wherein the rotation transmitting means transmits rotation of the rotary member to the damper while the movable side member is opened, and does not transmit rotation of the rotary member to the damper while the movable side member is closed.