FIELD: construction.
SUBSTANCE: invention characterises a blocking device for a window or a door, comprising a crossbar installed with the possibility of rotation by means of a driving traction rod, located behind the import plank, and interacting with a receiving spline of a fixedly installed facility for crossbar engagement, at the same time the crossbar is arranged as a double-arm lever, the first arm of which interacts with the receiving spline, and the second arm is in the functional connection with the driving traction rod having geometric closure, differing by the fact that the crossbar is arranged with the possibility of installation relative to the impost plank.
EFFECT: development of a system, which is simple to make and ensures automatic adjustment of a blocking device.
8 cl. 3 dwg
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