Device for locking a positive safety lock, in particular for an elevator door, and lock comprising same

摘要

The lock (1) has an adjustable bolt (6) mounted slidingly in a case (5), and cooperating with a locking part. A rod (15) is integrated to a rotating axle (16) that traverses the case, and is connected with the bolt for displacing the bolt between locking and unlocking positions with respect to a landing door. A locking unit (21) temporarily locks a head (17) of the rod by direct action on the head for displacing the bolt to the locking position.