To unlock and lock this device without using a key by providing a means for manually switching at least one lock element from an unlocking state to a locking state without using the means as a closing cylinder operated with the key.

When a door grip is operated, stoppers 1.26, 1.27 and a coupling member 2.6 are pushed in a coupling position of the coupling member 2.6 based on rotational movement of a coupling element 1.11 and a locking claw 1.9 is moved to an opening position to release a rotary catch 1.1. When the coupling member 2.6 is put out an outside of a region of the stoppers 1.26, 1.27 by an adjusting device 2, the coupling element 1.11 is not take the locking claw 1.9 and the rotary catch 1.1 is not released though the coupling member 2.6 circles around a pivot 1.10 when the door grip is operated. When the coupling member 2.6 is placed in the outside of the region, the coupling member 2.6 is moved in the region by the adjusting device 2 to release rotary catch 1.1. The coupling member 2.6 is left in the region at the time of that the adjusting device 2 is not in operation and put out the outside of the region by the adjusting device 2 only when a burglarproof function, etc., are actuated. Therefore, it is possible to unlock and lock without the key.