MANUAL FIRE-WARNING DEVICE Russian patent published in 2010 - IPC G08B17/00 

FIELD: mechanics.

SUBSTANCE: manual fire-warning device includes housing consisting of the base on which there arranged is electric circuit with switch, and cover with an opening for drive element installed in guides made on the cover with possibility of back-and-forth movement along its inner surface. Drive element has pressure force application surface and shank oriented in the direction of applied force and consisting of side walls and attaching the side walls of connection strap retaining the movable switch contact till the pressure force is applied. Side walls of shank are provided with possibility of deformation under effect of longitudinal loads and with protrusions on inner surfaces facing each other. On inner surface of the cover, perpendicular to it, there made is cylindrical element located as assembled warning device between side walls of shank and interacting with protrusions of side walls.

EFFECT: simplifying the device design and improving its operating reliability by providing structural version of the device elements.

11 cl, 6 dwg