INERTIA SWITCH Russian patent published in 2014 - IPC H01H35/14 

FIELD: measurement equipment.

SUBSTANCE: invention is aimed at measurement of applied linear accelerations in the automatic systems of flying objects. An inertia switch comprises the following units set on the axis: a basic inertia block held by a magnetic system, and a movable rotary drive with a groove in the side wall and a bridging unit set on it and intended for switching of contacts of the contact system, a casing with a sloped groove with its angular length exceeding the angular length of the groove in the movable rotary drive by the angle sufficient for contact switching, two projections set diametrically on an additional inertia block made as a bush interacting with the casing groove and the movable rotary drive groove, the bush is mounted on the basic inertia block and is pressed by a spring in the axial direction with the possibility of mutual axial movement, the axial stroke of the basic inertia block in respect to the bush is not less than its possible axial stroke up to full stop, the force produced by the spring exceeds the force produced by the basic inertia block at the operating acceleration set point for which the inertia switch is adjusted, and the diametrical projections are fixed on the bush, the prominent inner ends of the projections are inserted in the circular grooving made on the basic inertia block.

EFFECT: increased resistance of an inertia switch to highly intensive load impacts and expanded application range.

5 dwg