SAFETY-ACTUATING MECHANISM Russian patent published in 2018 - IPC F42C15/24 F42C15/40 

FIELD: blasting operations.

SUBSTANCE: invention relates to explosive engineering and can be used in fuses of projectiles. Safety-actuating mechanism comprises a housing with current leads, inside which is placed electric detonator with electrical leads, three or more MEMS keys, made in the form of microelectromechanical systems, opened in the initial position and triggered by overload, electronic time block that provides a countdown of the overload time exceeding the threshold level and forms electrical signal at the output in the event that the recorded time exceeds a certain value. One of the MEMS keys is located in such a way that the contacts are closed when the projectile contacts the obstacle under the influence of overload, exceeding the threshold level acting along the longitudinal axis of the safety-actuator. Other two or more MEMS switches are arranged in such a way, that the closing of the contacts is effected by the action of a centrifugal force when the safety-actuator rotates about the longitudinal axis, wherein the MEMS switches are disposed relatively to the longitudinal axis, preferably diametrically opposed. MEMS-key, triggered by longitudinal overload, one of the contacts is connected to one of the safety-actuator's current leads, and the other one is connected to the input of the electronic time block, output of which is connected to one of the electrodes of the electric detonator. MEMS keys, triggered by centrifugal force, are connected in series to the electrical circuit, one end of which is connected to the second actuator of the safety-actuator, and the other end is connected to the second electric outlet of the electric detonator.

EFFECT: invention allows to create a device characterized by improved overall mass characteristics, increased reliability indicators for combat use and increased safety in service circulation.

1 cl, 1 dwg