OPENING/CLOSING DOOR LOCK SYSTEM

To provide an opening/closing door lock system which can prevent an erroneous operation and a pseudo lock of a locking device by adding a minimum number of parts to an opening/closing door which incorporates the locking device and a dead bolt.SOLUTION: An opening/closing door (front sliding door 2A) whose door end side abuts on or approaches the mating member (side stile 33) in the closed state includes a lock device 4 and a dead bolt 20 that displaces when the lock device is operated. An error guard 39 is held movably in the direction intersecting with the displacement direction of the dead bolt, and is elastically urged in the closing direction of the opening/closing door. The error guard includes an operating portion 46 which protrudes from the door end side of the opening/closing door and abuts on the mating member at the time of closing operation and a restricting portion 48 which engages with the engaging portion 47 provided on the dead bolt in the unlocked state to restrict a displacement of the dead bolt. In the closed state of the opening/closing close door, the operating portion abuts on the mating member, the error guard moves against the elastic biasing force, and the engagement state between the restricting portion and the engaging portion is released.SELECTED DRAWING: Figure 11 【課題】施錠具とデッドボルトを内蔵した開閉扉に最小限の部品を追加して施錠具の誤操作及び疑似ロックを防止することが可能な開閉扉の施錠装置を提供する。【解決手段】閉止状態で相手部材（側框３３）に戸先側が当接若しくは接近する開閉扉（前側引戸２Ａ）に、施錠具４と、施錠具の操作時に変位するデッドボルト２０を備え、エラーガード３９をデッドボルトの変位方向と交差する方向へ移動可能に保持するとともに、開閉扉の閉止方向へ弾性付勢し、エラーガードには開閉扉の戸先側から突出し、閉止操作時に相手部材に当接する作動部４６と、解錠状態においてデッドボルトに設けた係合部４７に係合し、デッドボルトの変位を規制する規制部４８とを備え、開閉扉の閉止状態において相手部材に作動部が当接し、エラーガードが弾性付勢力に抗して移動して、規制部と係合部の係合状態が解除される。【選択図】 図１１