Device for the situation-dependent authorized admission or access to any casing and protection of said casing against misuse of the content

A locking mechanism for a casing, comprising

• a base plate (5) attached to a door (30) of the casing;
• a latch member (2) slidably connected to the base plate (5), said latch member comprising a substantially L-shaped cutout comprising a longitudinal slot (2b) and a lateral slot (2c);
• at least one spring (4) disposed between the base plate (5) and the latch member (2);
• a rotatable locking member (1);
• a pin (1b) connected eccentrically to the rotatable locking member (1), the pin (1b) being arranged to engage the substantially L-shaped cutout of the latch member (2);
• and
• an access opening (6) in the door (30) of the casing providing access to the latch member (2), the access opening being secured by a breakable barrier (3),
• wherein the latch member (2) is pushed into a locked position by the at least one spring (4) when the pin (1b) is positioned within the longitudinal slot (2b),
• and wherein the latch member (2) can be moved longitudinally into an unlocked position by either
• manual movement of the latch member (2) after breaking the barrier while the pin remains in the longitudinal slot (2b) or
• by rotation of the rotatable locking member (1), causing the pin (1b) to slide sideways within the lateral slot (2c) while moving the latch member (2) longitudinally.