MAIN FIRING DEVICE Russian patent published in 2018 - IPC F42C9/14 F42C11/00 F42B3/10 

FIELD: blasting operations.

SUBSTANCE: invention relates to the field of explosion engineering, to explosive charge firing device with non-contact triggering function, and can be used in automatic and under-barrel grenade launchers. Device includes an inertial contact sensor with a shock-activated element held in the starting position, a mechanism holding the movable element of the inert contact sensor in the starting position, made on the basis of a neodymium magnet. Firing device also includes a remote-action safety-and-arming device (SAD) with an electric detonator (ED) and a driven flap held in the starting position by a locking element containing a transfer charge of the explosive that is displaced from the ED axis, providing the firing device with the possibility of its closure by moving the flap and axial alignment of the transfer charge of explosive and ED. Electric circuit of the firing device is made open and includes a contactor, which is a pair of neodymium magnets with a closing contact moving under the influence of an overload, which in the starting position abuts one of the pair's magnets and has a connection to the power source. Another magnet of the pair is connected to a nichrome wire. As a flap drive, a magnetic drive is used, which is a pair of neodymium magnets. One magnet from each pair is mounted on the flap, and the opposite magnets are mounted on the body. As a fixing element of the flap, a nylon wire contacting with a nichrome wire is used, one end of which is fixed on the flap and the other on the body, with the possibility of its rupture when heated by a wire, which causes the flap to move to the operating position with simultaneous closure of the firing device's electric circuit.

EFFECT: functionality is increased, safety of handling is increased and dimensions are reduced.

1 cl, 2 dwg