Door lock

A door lock comprising a lock body (3) fitted with a front plate (1);

• the lock body has a dual-action bolt (4) that can be moved with reciprocating linear motion between the a withdrawn position and a locking position protruding out from the lock body through the bolt opening (5) in the front plate (2), said bolt being spring-loaded towards said protruding position, and said door lock further comprising deadbolting means (8) that can be moved to a deadbolting position in which they prevent the dual-action bolt from being moved from the protruding position to the position withdrawn in the lock body (3), and both an electric actuator (9) and a mechanical controller (16, 17) to control the deadbolting means,
• characterised in that the deadbolting means comprise a locking piece (15) to establish and release the locking of the deadbolting means in the deadbolting position, said locking piece being pivotably supported on the lock body (3) and comprising a mechanical control part (19) and at least one electrical control part (20A, 20B),
• the mechanical control part (19) being functionally connected to the mechanical controller (16, 17) and the electrical control part being functionally connected to the electric actuator, said locking piece (15) being arranged so that when mechanical control is used, the turning of the locking piece in relation to the lock body takes place without resistance from the energised electric actuator functionally connected to the electrical control part (9).