High-reliability leg wire type electric detonator connecting structure

Abstract

The utility model discloses a high-reliability leg wire type electric exploder connecting structure which comprises a shell, a distributor plate, a wiring plate, a positioning ring, an insulating sheet, a wire pressing plate and a lead, an ignition unit is assembled in the connecting structure, an output end is assembled with a weapon system through threads, and an input end is connected with a weapon ignition control system through the lead. According to the utility model, the problem of poor reliability of direct connection between the leg wire type electric exploder and the weapon system is solved. The electric detonator has the characteristics of high safety, good extensibility, good insulativity, reliable connection, high structural strength and the like, is easy to disassemble and assemble, simple to operate and standard in technical interface, can be subjected to size adjustment design according to the same proportion of the structural size of the leg wire type electric detonator, and can tolerate ship sweep frequency vibration, flight vibration, aircraft equipment impact and damp heat; the device has high electromagnetic compatibility in complex environments such as low temperature, low air pressure, salt mist, mould and the like, and meets all-weather use requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of foot-line type electric detonators, and particularly relates to a high-reliability foot-line type electric detonator connection structure. Background Art

[0002] Leg-type electric initiators typically have two to four legs. They connect to weapon systems primarily through two methods: direct leg connection and leg-wire soldering. These connections suffer from poor reliability, low insulation, and low safety, failing to meet the high-quality, high-safety requirements of modern weapon systems operating in complex conditions and electromagnetic environments. To improve the reliability, safety, and versatility of leg-type electric initiators, a highly reliable leg-type electric initiator connection structure is needed. Utility Model Content

[0003] The purpose of this utility model is to provide a high-reliability foot-type electric initiator connection structure, and the specific technical solution is as follows:

[0004] A high-reliability foot-type electric detonator connection structure comprises a shell, a branching plate, a terminal block, a positioning ring, an insulating sheet, a wire pressing plate and a lead. The wire pressing plate, insulating sheet, positioning ring, terminal block and branching plate are fixed inside the shell. The shielding braided layer of the lead is connected to the shell. The wire pressing plate is inserted into the lead and pressed on its shielding braided layer to close the input end of the shell; the shielding braided layer of the lead is separated and laid flat on the insulating sheet, and the insulating sheet is inserted into the lead and installed on the positioning ring; the positioning ring is inserted into the lead and installed on the terminal block, and the terminal block and the lead are axially positioned. The branching plate is inserted into the electric detonator foot wire and pressed into the internal slot of the shell; the electric detonator foot wires are respectively inserted into the circular holes of the copper foil layer of the terminal block and welded to the two core wires of the lead.

[0005] Furthermore, the shell is an H-structured cylindrical shell with a central through hole, a U-shaped interior, a hexagonal surface in the middle of the exterior, an external threaded interface on the left side, a conical mouth, and a cylindrical slot on the right side.

[0006] Furthermore, the line distribution plate is in the shape of a disc, with four symmetrical circular holes in the middle, arranged in a "mouth" shape.

[0007] Furthermore, the wiring board is in the shape of a disc, with two symmetrical crescent-shaped copper foil layers a and b on one side, and each copper foil layer has two circular holes.

[0008] Furthermore, the positioning ring is in a circular ring shape.

[0009] Furthermore, the insulating sheet and the wire pressing plate are both in the shape of circular sheets with a circular hole in the center.

[0010] Furthermore, the sealant is filled in the positioning ring.

[0011] Beneficial effects of the utility model:

[0012] (1) This utility model designs a connection structure for foot-type electric detonators, solving the problem of poor reliability in direct connection between foot-type electric detonators and weapon systems. It has the characteristics of strong versatility, good extensibility, good insulation, reliable connection and high structural strength, providing a new idea for the structural design of foot-type electric detonators.

[0013] (2) The utility model assembles the weapon system through threads and connects the firing control system with wires. It has high structural strength, standard interface size, easy disassembly and assembly, simple operation, and can ensure the safety and processability of the product.

[0014] (3) The utility model can be designed and sized in proportion to the size of the foot-type electric initiator. The product can withstand ship frequency sweep vibration, flight vibration, aircraft equipment impact and humidity, low temperature and low pressure, salt spray, mold and other complex environments, has high electromagnetic compatibility, and meets all-weather use requirements.

[0015] (4) As a connection structure for foot-type electric detonators, the utility model has an integrated design level that is at the domestic advanced level, has high reliability and versatility, and can be promoted and applied to all foot-type electric detonators and weapons and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the connection structure of the electric detonator of the utility model;

[0017] Figure 2 Schematic diagram of the shell structure;

[0018] Figure 3 This is a schematic diagram of the distribution board structure;

[0019] Figure 4 Schematic diagram of the wiring board structure;

[0020] In the figure, 1-housing, 2-distribution board, 3-connection board, 4-positioning ring, 5-insulation sheet, 6-pressing plate, 7-lead, 8-sealant; DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1

[0023] A high-reliability foot-type electric detonator connection structure, the connection structure includes a shell 1, a branching plate 2, a terminal block 3, a positioning ring 4, an insulating sheet 5, a wire pressing plate 6, a lead 7 and a sealant 8. After the branching plate 2 is inserted into the foot wire of the electric pyrotechnic product, it is pressed into the internal slot position of the shell 1; the foot wire is respectively inserted into the circular hole of the copper foil layer of the terminal block 3 and welded to the two core wires of the lead 7; the positioning ring 4 is inserted into the lead 7 and installed in the shell 1 on the terminal block 3; the sealant is injected into the positioning ring 4, and the insulating sheet 5 is inserted into the lead 7 and installed on the positioning ring 2; the shielding braided layer of the lead 7 is separated and laid flat on the insulating sheet 5, and the wire pressing plate 6 is inserted into the lead 7 and pressed on the shielding braided layer; the input end of the shell 1 is closed. Figure 1 shown.

[0024] The shell 1 is designed as an H-shaped cylindrical structure with a central through hole. The left side is designed with an external thread interface, the mouth is conical, with an external hexagonal surface and a built-in slot. Figure 2 shown.

[0025] The branching plate 2 is in the shape of a disc, with four symmetrical circular holes in the middle, arranged in a "mouth" shape, for inserting the electric initiator leg wires, separating the leg wires reliably, avoiding cross contact of the leg wires during assembly and transportation, and ensuring stable product resistance and insulation performance. Figure 3 shown.

[0026] The terminal block 3 is designed with two symmetrical crescent-shaped copper foil layers a and b on one side, each with two circular holes. This can meet the structural design of 2-4 leg wires of the electric initiator. During assembly, the two copper foil layers are respectively inserted into the product 1-2 leg wires, and the two wires of the leg wire and the lead wire 7 are respectively soldered to the two copper foil layers a and b to achieve a reliable connection between the leg wire and the lead wire 7. Figure 4 shown.

[0027] The positioning ring 4 is annular and is installed on the terminal block 3 inside the shell 1 after passing through the lead 7. It axially positions the terminal block 3 and the lead 7 to protect the welding point from contacting the shell and forming a short circuit. The positioning ring 4 is filled with sealant to fill and seal the welding position of the electric initiator leg wire to improve the sealing of the product. By adjusting the height of the positioning ring 4, the closing margin of the product input end and the height size of the product can be controlled.

[0028] The insulating sheet 5 is made of polytetrafluoroethylene film with strong corrosion resistance, high chemical stability and insulation performance, which is punched into a disc with a circular hole in the center. The lead 7 is inserted into the circular hole and then installed on the positioning ring 2, isolating the foot wire welding position from the wire pressing plate 4 to ensure stable insulation performance of the product.

[0029] The wire pressing plate 6 is made of 12Cr18Ni9 stainless steel strip with good mechanical properties, and is punched into a disc shape with a circular hole in the center. The lead 7 is inserted into the circular hole and installed on the insulating sheet 5. By pressing and closing the shell 1, the wire pressing plate 6, insulating sheet 5, positioning ring 4, terminal board 3, and distribution board 2 are fixed inside the shell 1 to ensure the integrity of the product structure.

[0030] Lead 7 uses shielded mounting wire AFRP-250 2×0.35mm 2 It has the advantages of good flexibility, high temperature resistance, moisture resistance, flame retardancy, etc. After the product is assembled, the metal silver-plated shielding braided layer of the lead 7 is reliably connected to the shell 1 to form a metal shielding layer, which meets the requirements of stray current and electromagnetic compatibility and improves the safety margin of the product.

[0031] After the ignition unit is installed, it is assembled in the weapon system. The electric detonator is reliably connected to the weapon system through the fuse. After receiving the electrical energy signal, the ignition unit is detonated to complete the predetermined function.

[0032] The firing unit is assembled in the connection structure, and the weapon system is assembled through threads, which has high mechanical properties and environmental adaptability; epoxy glass foil laminate is used as the connection material to achieve reliable connection between the leg wire and the lead wire; the shielded installation wire is combined with the stainless steel shell design to solve key technologies such as insulation protection and electromagnetic compatibility, while ensuring the product's extensibility, reliability, environmental adaptability and processability.

[0033] After assembly, the product can meet all-weather environmental requirements and electromagnetic compatibility requirements such as shock, ship sweep frequency vibration, flight vibration, aircraft equipment impact, high and low temperature operation of -50℃~+65℃, humidity and heat, low temperature and low pressure, salt spray, mold, etc.

[0034] Working process: After the foot-type electric detonator is assembled into the connection structure, it is assembled into the supporting weapon system through threading. When the firing control system applies DC current to the fuse, the ignition unit inside the connection structure is detonated, generating high-temperature and high-pressure gas, completing the product's established function.

Claims

1. A high-reliability foot-type electric initiator connection structure, comprising a housing (1), a branching plate (2), a terminal block (3), a positioning ring (4), an insulating sheet (5), a wire pressing plate (6) and a lead (7), characterized in that: The wire pressing plate (6), the insulating sheet (5), the positioning ring (4), the wiring board (3), and the branching plate (2) are fixed inside the shell (1); the shielding braided layer of the lead wire (7) is connected to the shell (1); the wire pressing plate (6) penetrates the lead wire (7) and presses on its shielding braided layer, closing the input end of the shell (1); the shielding braided layer of the lead wire (7) is separated and laid flat on the insulating sheet (5); the insulating sheet (5) penetrates the lead wire (7) and is installed on the positioning ring (4); the positioning ring (4) penetrates the lead wire (7) and is installed on the wiring board (3), axially positioning the wiring board (3) and the lead wire (7); the branching plate (2) penetrates the electric initiator foot wire and presses into the internal slot of the shell (1); the electric initiator foot wires respectively penetrate the circular holes of the copper foil layer of the wiring board (3) and are welded to the two core wires of the lead wire (7).

2. A high reliability foot wire type electric initiator connection structure according to claim 1, characterized in that: The housing (1) is an H-shaped cylinder with a central through hole, a U-shaped interior, a hexagonal face in the middle of the exterior, an external threaded interface on the left side, a tapered mouth, and a cylindrical slot on the right side.

3. A high reliability foot wire type electric initiator connection structure according to claim 1, characterized in that: The line distribution plate (2) is in the shape of a disc, with four symmetrical circular holes in the middle, arranged in a "mouth" shape.

4. A high reliability foot wire type electric initiator connection structure according to claim 1, characterized in that: The wiring board (3) is in the shape of a disc, and has two symmetrical crescent-shaped copper foil layers a and b on one side, and each copper foil layer has two circular holes.

5. A high reliability foot wire type electric initiator connection structure according to claim 1, characterized in that: The positioning ring (4) is in the shape of a circular ring.

6. A high reliability foot wire type electric initiator connection structure according to claim 1, characterized in that: The insulating sheet (5) and the wire pressing plate (6) are both in the shape of a circular sheet with a circular hole in the center.

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