DOOR LOCK Russian patent published in 2016 - IPC E05B21/00 

FIELD: instrument making.

SUBSTANCE: lock (1) with mechanism of security, which comprises a frame, defining the inlet channel key in the lock and the latch (12) movably installed on frame and sliding key turn in lock between first position corresponding to the open state of the lock, and the second position corresponding to the closed state of the lock. At least one plate (4) of confidentiality is movably installed on the frame and shifted by turning the key in unlocking position movement catch (12). Inlet channel key passes directly through lock and sets the free passage for input of key across at least one plate (4) of confidentiality. There is a shield (S) movably installed on frame and sliding as a result of displacement of at least one plate (4) of confidentiality in unlocking position and/or deadlock (12) in open position between the position allowing passage switch or other element, in which the input channel is open, and at least one blocking position in which the inlet channel at least partially dammed shield (S).

EFFECT: increased reliability of lock.

11 cl, 11 dwg