Patent ID: 7028370

Claim:
A retracting apparatus which is provided with a fixed body and a moving body supported to said fixed body so as to freely move from one end position to another end position, and is automatically retracted to said one end position or said another end position, in the case that said moving body moves toward said one end position or said another end position and reaches an automatic retract position a predetermined distance apart from said one end position or said another end position, comprising: a driving member mounted to a side of said moving body or a side of the fixed body; a sliding member engaged with said driving member and sliding; a guiding member guiding said sliding member; and an energizing member energizing said sliding member to said one side or another side, wherein said guiding member is provided with a guiding groove which guides said sliding member in a predetermined range of said moving body during a period that said moving body moves from said one end position to an automatic retract position or from said another end position to the automatic retract position, and said guiding groove having a large diameter portion formed in an end portion of said guiding groove in a direction of said one moving end position or a direction of the another end position such that a width is larger than a width of said guiding groove, said sliding member is provided with a sliding pin which is inserted through said guiding groove and slides along said guiding groove, the sliding pin of said sliding member slides along said guiding groove in accordance with movement of said moving body in said one end position direction or the another end position direction of the moving body, and rotates in said one end position direction or the another end position direction at said guiding groove end portion, whereby a dimension in an orthogonal direction to said guiding groove is changed, the sliding pin is fitted to said large diameter portion and locks said sliding member, an engagement between said sliding member and said driving member is cancelled, said driving member and said sliding member are engaged with each other at said automatic retract position on the basis of the movement of said moving body in said another end position direction or the one end position direction, and the lock of said sliding member is cancelled.