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

FIELD: blasting operations.

SUBSTANCE: invention relates to explosive engineering and can be used in fuses of projectiles. Device comprises a housing with current leads, inside which is located an electric detonator with electrical leads and two switches. These keys are made in the form of microelectromechanical systems – MEMS keys. They are open in the initial position and are provided with the possibility of operation under overload. There is an electronic time block that provides the possibility of counting the time of the overload action exceeding the threshold level and the formation of an 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 closing of the contacts is provided when the projectile contacts the obstacle under the influence of an overload exceeding the threshold level and acting along the longitudinal axis of the safety-cocking mechanism. Another MEMS key is located in such a way that the closing of the contacts is provided by centrifugal force when the safety-cocking mechanism rotates about the longitudinal axis. MEMS-key, provided with the possibility of triggering under the action of longitudinal overload, one of the contacts is connected to the lead of the safety-cocking mechanism. Another contact is connected to the input of the electronic time block. Output of the latter is connected to one of the terminals of the MEMS key provided with the possibility of triggering under the action of a centrifugal force, the other contact of which is connected to the electric output of the electric detonator.

EFFECT: increase the reliability of the device during combat use, safety in service circulation and reduction of overall weight and weight characteristics.

1 cl, 1 dwg