RU205478U1 - PIEZOGENERATOR EXPLOSER - Google Patents

Abstract

The utility model relates to the field of military technology, specifically to piezoelectric fuses for projectiles and missiles. The essence of the proposed solution is as follows. The fuse piezoelectric generator contains a piezoelectric element resting on the bottom stainless steel contact, crimped to a contact made of a conductive material and pressed through the insulation into a metal case, and an upper contact pressed by the striker to the piezoelectric element and connected to the case. When meeting an obstacle (target), the piezoelectric element is compressed between the lower contact and the striker, as a result of which a potential difference arises on the electrodes of the piezoelectric element, which is fed to the detonation of a spark electric detonator in the detonation part of the fuse. To increase the reliability of the piezoelectric generator by providing a low contact resistance between the contacts for the entire period of storage and operation, two grooves are made on the lower contact, into which a contact of a conductive material is pressed, and the grooves are located close enough so that during pressing, an easily deformable material wraps around the bridge between the grooves. 2 ill.

Description

FIELD OF TECHNOLOGY.

The present utility model relates to the field of military technology, namely to piezoelectric fuses for projectiles and missiles.

BACKGROUND OF TECHNOLOGY.

Reliable instantaneous piezoelectric fuses are used to destroy various armored targets in armor-piercing artillery shells and aircraft missiles. So the composition of the S-8KOM missiles includes a V-5KP1 fuse containing a V-5KP piezoelectric generator (MAI, A.I.Sychev. I.G. Martirosyan. I.A. manual), and the artillery fuse V-15 (Head-fired fuse V-15. Description of the device and operation. Military publication of the USSR Ministry of Defense, Moscow - 1966) includes a piezoelectric generator V-15PG.

The closest analogue (prototype) is the V-5KP1 fuse. The V-5KP1 explosive device (index 9-K-608M) is designed to detonate the filling of the missile warhead, as well as to ensure safety during service handling and combat use. V-5KP1 is a contact action explosive device with a pyrotechnic long-range cocking of a safety type and consists of two parts: a piezoelectric generator and a safety-actuating mechanism, between which there is an electrical connection.

The V-5KP piezoelectric generator (Fig. 1) serves as an electric energy sensor that converts the mechanical energy of an impact when the rocket meets an obstacle into an electrical one for triggering a spark electric detonator.

The piezoelectric generator consists of piezoelectric element 5, upper contact 4, lower contact 6, striker 3, contact 8, body 7, cap 2 and membrane 1. explosive devices "). The upper contact 4 and the striker 3 provide the transmission of a shock impulse to the piezoelectric element 5 when the missile meets an obstacle at different angles.

Cap 2 and membrane 1 serve as a fairing and make it possible to launch missiles through a heat-shielding gasket in the B8M (B8M-1) block. The electrical contacts of the piezoelectric generator are housing 7 and contact 8. The lower contact 6 is made of stainless steel to ensure strength and prevent oxidation, and contact 8 is made of an easily deformable conductive material, usually duralumin or brass.

The disadvantage of this technical solution is that over time, the transition resistance between the lower contact 6 and contact 8, as practice has shown, can increase due to a decrease in the contact pressure at the point of pressing and oxidation of the contact surface 8. There were cases of complete loss of contact.

The problem to be solved by the claimed technical solution is to create a construction of the fuse piezoelectric generator, free from the indicated drawbacks inherent in the technical solution representing the prior art.

This problem is solved due to the fact that two grooves are made in the fuse piezoelectric generator on the lower contact, into which a contact made of a conductive material is pressed, and the grooves are located close enough so that during pressure testing the easily deformable material is pulled onto the bridge between the grooves.

The technical result of the utility model is to increase the reliability of the piezoelectric generator by providing a low contact resistance between the contacts for the entire period of storage and operation.

DISCLOSURE OF A USEFUL MODEL.

The utility model is illustrated with a description and an example of practical use.

The essence of the utility model is illustrated by a drawing, where in FIG. 1 shows a general view of a piezoelectric generator in an existing design, FIG. 2 - the proposed design.

The piezoelectric generator (Fig. 1 and Fig. 2) consists of a piezoelectric element 5, upper contact 4, lower contact 6, striker 3, contact 8, body 7, cap 2 and membrane 1.

The piezoelectric element 5 is in the form of a cylindrical polarized ceramic. The upper contact 4 and the striker 3 provide the transmission of a shock impulse to the piezoelectric element 5 when the missile meets an obstacle at different angles.

Cap 2 and membrane 1 serve as a fairing and make it possible to launch missiles through a heat-shielding pad in the launch block. The electrical contacts of the piezoelectric generator are housing 7 and contact 8. The lower contact 6 is made of stainless steel to ensure strength and prevent oxidation, and contact 8 is made of an easily deformable conductive material, usually duralumin or brass. On the lower contact 6, two grooves are machined into which the contact 8 of a conductive material is pressed, and the grooves are located close enough so that, during the pressing, the material of the contact 8 is pulled onto the bridge between the grooves.

IMPLEMENTATION OF THE USEFUL MODEL.

The work of the piezoelectric generator is as follows.

When meeting an obstacle (target), the cap 2 is deformed and the piezoelectric element 5 is compressed between the lower contact 6 and the striker 3, as a result of which a potential difference arises on the electrodes of the piezoelectric element 5, which is fed to the spark electric detonator in the detonation part of the fuse. The electrical circuit for supplying voltage, and then the discharge current of the spark detonator, includes the transition resistance between contacts 6 and 8. In the proposed design, the transition resistance remains low (as shown by tests, less than 0.001 Ohm), which ensures reliable operation of the fuse after long-term storage and operation as part of ammunition ...

Claims (1)

A piezoelectric generator of a fuse for projectiles and missiles, characterized in that it contains a piezoelectric element resting on the bottom contact made of stainless steel, crimped with a contact made of a conductive material and pressed through the insulation into a metal case, an upper contact, a striker that presses the upper contact to the piezoelectric element and connected to the case , in this case, two grooves are made on the lower contact, into which a contact of a conductive material is pressed, and the grooves are located close enough so that during pressing, an easily deformable material is pulled onto the bridge between the contacts.

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