A connector for initiating explosive device with short circuit protection conversion function

Abstract

The application discloses a connecting device for initiating explosive, which has short-circuit protection conversion function. The connecting device comprises an electric connector socket and a plug. The socket is a glass sealing structure. The socket shell and the socket hole are sintered by composite glass to form an integral body, thereby realizing longitudinal sealing. The plug comprises a plug shell, a socket insulator, an insulating cover plate, an inner insulating core, a short-circuit spring, a spring, a shaft rivet, a dynamic socket hole and a static socket hole. When the connecting device is in a long-term storage stage, the dynamic socket hole and the static socket hole are short-circuited by the short-circuit spring under the action of the spring, and the connecting device is in a short-circuit protection state. When plugging is needed, the plug is inserted into the socket, and the dynamic socket hole is moved backward, thereby realizing dynamic switching between the short-circuit state and the open-circuit state. The connecting device can save the short-circuit component, and can realize switching between the short-circuit state and the insulation state by direct plugging, which represents a development direction of future initiating explosive.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and more specifically to a pyrotechnic connector with short-circuit protection switching function. Background Technology

[0002] With the trend of mass production and low cost in weapon development, long-range rocket weapon systems require the removal of short-circuit caps from pyrotechnic connectors in order to improve rapid response capabilities. This allows for direct switching between short-circuit and insulation states through plugging in, representing a future development direction for pyrotechnics.

[0003] Existing pyrotechnic connectors require short-circuit caps when not in use to ensure safe short-circuiting of the two contacts. These caps must be removed individually before use, and the lack of short-circuit protection during the removal-to-plug process poses a safety hazard. Furthermore, these short-circuit caps are structurally similar to plugs, making them complex and costing the same, thus increasing operating costs. Pyrotechnic connectors with short-circuit protection switching capabilities can quickly switch between short-circuit and insulation states during plugging, reducing the need for short-circuit caps and facilitating rapid tip replacement. Summary of the Invention

[0004] The purpose of this invention is to provide a pyrotechnic connector with short-circuit protection switching function, so as to solve the problem that the pyrotechnic connector can quickly switch between short-circuit and insulation states during the insertion process, reduce the requirement for short-circuit caps, and enable the warhead to be replaced quickly.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A pyrotechnic connector with short-circuit protection switching function includes a socket and a plug. The socket is installed behind the panel, and the plug is installed in front of the panel. The plug includes a plug housing, a socket insulator, an insulating cover, an inner insulating core, a short-circuit spring, a spring, a shaft rivet, a dynamic socket, and a static socket. The insulator and the insulating cover are inserted into the plug housing. The inner insulating core, the spring, and the dynamic socket are inserted into the dynamic cavity of the insulator and the insulating cover. The static socket is inserted into the static cavity of the insulating cover. The short-circuit spring is inserted into the insulating cover perpendicular to the mating direction. The shaft rivet fixes the socket insulator and the socket cover within the plug housing. The socket is a sintered glass socket, including a mounting gasket, a long pin, a short pin, a socket housing, sintered glass, and epoxy resin. The mounting gasket is located in front of the socket housing flange. The socket housing, the long pin, and the short pin are sintered together by the sintered glass to form a whole. The epoxy resin is located at the front end of the long pin.

[0007] Furthermore, the transition between short circuit and open circuit mainly consists of three stages:

[0008] 1) Long-term storage stage: The plug is in a short-circuit protection state, and the dynamic socket and the static socket are short-circuited by an internal short-circuit spring to ensure the short-circuit between the dynamic socket and the static socket in the long-term storage state;

[0009] 2) Insertion and reception stage: When the socket needs to be inserted, the long pin on the socket that cooperates with the dynamic socket first contacts and pushes the dynamic socket to move backward. After the insertion is in place, the dynamic socket moves backward and the dynamic socket and the static socket are disengaged, and the circuit is open. At this time, the relevant circuit can be connected.

[0010] 3) Short-circuit protection recovery stage after separation: When the socket is separated from the plug, the dynamic socket can automatically return to the short-circuit contact state until the next use.

[0011] Furthermore, the socket glass is sealed with epoxy adhesive after sealing.

[0012] Furthermore, the plug insulating cover is riveted to the plug housing by the aforementioned shaft rivets.

[0013] Furthermore, the short-circuit spring is an elastic spring sheet, and the short-circuit spring is fixed to the insulating cover plate by an interference fit. The short-circuit spring is in elastic contact with the dynamic socket.

[0014] The beneficial effects of this invention are as follows: A pyrotechnic connector with short-circuit protection switching function is used in pyrotechnic applications. It is compact in size, easy to assemble, and the dynamic and static sockets are elastically connected by a short-circuit spring, ensuring reliable contact. It allows for rapid switching between short-circuit and insulation states during insertion, reducing the need for short-circuit caps and enabling quick replacement of the contact springs. This invention meets the air leakage rate requirement (sockets only): 1×10⁻⁶. -6 Pa·L / s: Insulation resistance ≥1000MΩ, contact resistance ≤20mΩ, insertion and removal cycles 500 times. Attached Figure Description

[0015] Figure 1 It is a pyrotechnic connector with short-circuit protection switching function;

[0016] Figure 2 This is a schematic diagram of the plug structure;

[0017] Figure 3 This is a structural diagram of the socket;

[0018] In the diagram: 10. Plug; 20. Socket; 101. Plug housing; 102. Socket insulator; 103. Insulating cover; 104. Inner insulating core; 105. Dynamic socket; 106. Spring; 107. Static socket; 108. Short-circuit spring; 109. Shaft rivet; 110. Wire; 201. Mounting gasket; 202. Socket housing; 203. Sintered glass; 204. Short pin; 205. Long pin; 206. Epoxy resin Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1-3 As shown, the pyrotechnic connector with short-circuit protection switching function proposed in this embodiment includes a plug 10 and a socket 20. The plug 10 is fixed to the panel by two M1.6 countersunk screws, and the socket 20 is fixed to the mounting equipment panel by two M1.6 pan head screws. A sealing gasket 201 is used to achieve sealing.

[0021] Figure 2 In this process, the wire 110 is crimped onto the dynamic socket 105 and the static socket 107 using a general crimping tool. The static socket 107 is placed in the insulating cover plate 103. The short-circuit spring 108 is press-fitted into place from the side of the insulating cover plate 103. The spring 106 is placed in the insulating cover plate 103. The dynamic socket 105 is placed in the insulating cover plate 103. The inner insulating core 104 is placed in the socket insulator 102. After the socket insulator 102 and the insulating cover plate 103 are fastened together, they are inserted into the plug housing 101. The shaft rivet 109 is used to pass through the plug housing 101 and the insulating cover plate 103 and then riveted to fix them.

[0022] Figure 3 In the process, the socket housing 202 and the short pins 204 and long pins 205 are sintered into a whole by sintering glass 203, which can achieve a seal between the socket housing 202 and the short pins 204 and long pins 205, thereby preventing external media from entering the installation equipment through the socket 20 and achieving a gas-tight seal for the connector. Epoxy adhesive 206 is cured in front of the socket housing 202 and the sintered glass 203, and the mounting gasket 201 is placed in front of the flange of the socket housing 202.

Claims

1. A pyrotechnic connector with short-circuit protection switching function, comprising a socket and a plug, characterized in that: The plug includes a plug housing, a socket insulator, an insulating cover plate, an inner insulating core, a short-circuit spring, a spring, a shaft rivet, a dynamic socket, and a static socket. The insulator and the insulating cover plate are inserted into the plug housing. The inner insulating core, the spring, and the dynamic socket are inserted into the dynamic cavity of the insulator and the insulating cover plate. The static socket is inserted into the static cavity of the insulating cover plate. The short-circuit spring is inserted into the insulating cover plate perpendicular to the mating direction. The shaft rivet fixes the socket insulator and the socket cover plate into the plug housing. The socket is a glass sintered socket, including a mounting gasket, a long pin, a short pin, a socket housing, sintered glass, and epoxy resin. The mounting gasket is located in front of the flange of the socket housing. The socket housing, the long pin, and the short pin are sintered into a whole through the sintered glass. The epoxy resin is located at the front end of the long pin.

2. The pyrotechnic connector with short-circuit protection switching function according to claim 1, characterized in that: Pyrotechnic connectors achieve dynamic switching between short-circuit and open-circuit states through an elastic structure.

3. The pyrotechnic connector with short-circuit protection switching function according to claim 1, characterized in that: The plug uses both static and dynamic contacts.

4. The pyrotechnic connector with short-circuit protection switching function according to claim 1, characterized in that: The short-circuit spring is an elastic spring sheet, and the short-circuit spring is fixed to the insulating cover plate by interference fit. The short-circuit spring is in elastic contact with the dynamic socket.

Images