DOOR LEVER TUMBLER LOCK (OPTIONS) Russian patent published in 2020 - IPC E05B21/00 

FIELD: locking devices.

SUBSTANCE: in the first version, the door lock contains two latches (2, 3) with posts (10, 11) located in housing (1), the first and the second sets of lever tumblers (5, 6). Latches (2, 3) are installed one above the other with the possibility of opposite directed back-and-forth movement. First and the second sets of lever tumblers (5, 6) are installed on both sides of key well (7) with possibility of synchronous movement with latches (5, 6). At that, in holes (21) of lever tumblers (5, 6) first posts (10) of latches (2, 3) are located. Resistance to breaking is increased due to that on second posts (11) of latches (5, 6) retainer (4) is installed, which is fixed on fixed axis (12) of housing (1) with possibility of rotation. In compliance with second version, door lock comprises third and fourth sets of lever tumblers (23, 24). At that, the first and the third sets of lever tumblers (5, 23) are placed on both sides from first latch (2), and the second and the fourth sets of lever tumblers (6, 24) are placed on both sides from second latch (6). Number of first posts (10) on each latch (5, 6) is equal to at least two and they are located on opposite sides of each latch.

EFFECT: technical problem is the need to simplify the lock design with simultaneous improvement of resistance to burglary.

2 cl, 10 dwg