STOPPER DEVICE FOR OPENING/CLOSING BODY

PROBLEM TO BE SOLVED: To easily move an opening/closing body to a predetermined position with a small force and to surely regulate the returning movement of the opening/closing body from the predetermined position. SOLUTION: This stopper device includes a stopper piece 52 projecting from an opening 511 in a casing 51 to abut against a part of an opening/closing body to regulate the returning movement of the opening/closing body, a coil spring 54 for energizing the stopper piece 52 in the projecting direction, projecting parts 524, 545 projected to both sides of the base end of the stopper piece 52, and inclined surfaces 551, 562 for positioning and guiding the stopper piece 52 against the energizing force of the coil spring 54 by making the projecting parts 524, 525 abut against the inclined surfaces 551, 562. The inclined surfaces 551, 562 are formed in the shape of mountains that face each other while getting width narrower toward the opening, the inclination angle of the inclined surface 562 being greater than that of the inclined surface 551.