CYLINDRICAL LOCK WITH ANTI-BURGLARY FUNCTION Russian patent published in 2017 - IPC E05B9/04 

FIELD: construction.

SUBSTANCE: cylindrical lock with anti-burglary function can be implemented in locking devices with increased degree of protection against burglary for residential buildings, public and industrial buildings. The cylinder lock comprises an inner part (1) of the housing with an inner cylinder (3) rotatably mounted in a recess (13), in which a composite cam (7) is arranged, and an outer part (2) of the housing with an outer cylinder (4) rotatably mounted. Both parts (1, 2) of the housing are connected by a connecting element (5) with a weakened section. A radial profiled opening (20) of the cylinder is drilled in the inner cylinder (3), in which a retaining member (21) is placed under the action of a spring (25) and a pin (26). In the inner cylinder (3), an extension (22) is placed, supported by a compression spring, which pushes the first switching element (10a) together with the central pin (19) until they come into contact in the extended position with the first transfer plate (9) in the composite cam (7). The retaining element (21) exits from the radial profiled opening (20) of the cylinder and gets on the extension (22) behind the first switching element (10a).

EFFECT: increasing the reliability.

5 cl, 2 dwg