CN215069815U - Five accuse fireworks switching device - Google Patents

Five accuse fireworks switching device Download PDF

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Publication number
CN215069815U
CN215069815U CN202121336337.1U CN202121336337U CN215069815U CN 215069815 U CN215069815 U CN 215069815U CN 202121336337 U CN202121336337 U CN 202121336337U CN 215069815 U CN215069815 U CN 215069815U
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China
Prior art keywords
switch device
switch
contact
piston rod
welding
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Expired - Fee Related
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CN202121336337.1U
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Chinese (zh)
Inventor
贺阳
梁珂
周小山
冉文
徐江涛
杨志强
罗婧
杨龙海
霍明光
赵士津
李耀肸
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No213 Institute Of China North Industries Group Corp
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No213 Institute Of China North Industries Group Corp
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Abstract

The utility model discloses a five accuse cigarette fire switching device, including electric detonator and switching device, be the initiating explosive device with electric detonator and switching device integration, realize two and close three throw functions, have the characteristics miniaturized, integrate, lightweight, function pluralism, be the switch of a brand-new design theory. By adopting an advanced W-shaped circular glowing bridge ignition structure design, the key technology of small-size passivation and static electricity prevention is solved, and the action time control and reliability of the isolating switch device are improved; the designed structures such as the electrostatic discharge air gap protection channel and the like meet the technical requirements of antistatic design of products; beryllium bronze gold plating is adopted as a contact reed, and a cross integral injection molding is adopted to form an intermediate body of a product, so that the positioning of the contact reed and the contact resistance of the product are ensured, and the reliability of function conversion control of five groups of switch terminals is improved; the laser seamless welding technology is adopted, and the sealing performance and the integrity of the product are improved.

Description

Five accuse fireworks switching device
Technical Field
The utility model belongs to the initiating explosive device field of initiating explosive device, concretely relates to five accuse cigarette fire switching devices mainly are applied to technical field such as fuse electrical safety insurance, power supply control.
Background
Along with the complexity of a battlefield electromagnetic environment and the development of a weapon system, under the condition that the caliber is not changed, higher requirements are put forward on ammunition, the ammunition develops towards high safety, high reliability, high precision, high power and intellectualization, and internally assembled components develop towards miniaturization, integration, modularization, serialization and intellectualization. Most of the conventional missiles in China use electronic trigger fuses, and a multi-channel electronic trigger mode is designed in the fuses, so that the fuses can be guaranteed to act more reliably. For many years, a switch used for connecting an electronic fuse circuit is generally composed of a unit initiating explosive device and a mechanical switch. Because a plurality of circuits need to be connected and disconnected, the switch has the disadvantages of large volume, complex assembly, various types and weak universality, and therefore, a module switch integrating miniaturization, integration, light weight and diversified functions is needed to realize multipath closing and switching functions and realize electronic triggering of fuses.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a five accuse fireworks switching device, concrete technical scheme is as follows:
a five-control smoke and fire switch device comprises an electric detonator and a switch device, wherein the electric detonator is arranged in the switch device; the switch device is formed by laser seamless welding after being assembled,
the electric detonator comprises a shell, a welding bridge electrode plug, an insulating ring, a cover plate, a lead, a sealant and a main charge; sequentially arranging the welding bridge electrode plug and the insulating ring into a shell, injecting sealant after welding a lead, arranging main charge, then arranging a cover plate, and closing up;
the switch device comprises a body, an intermediate body, a positioning sheet, a base and a piston rod; the piston rod is pushed into the body; the intermediate body and the base are assembled into a whole, and the intermediate body and the base are integrally and horizontally arranged in the body through the two positioning sheets to form a switch device;
the base is formed by sealing five pairs of switch terminals and a cover plate through glass, and the surface of the base is plated with gold; one end of the switch terminal is a contact end, the other end of the switch terminal is a wiring end, the contact end is flattened, the contact area with the contact reed is increased, the contact resistance is reduced, and the drill is drilled after the wiring end is flattened
Figure BDA0003117816510000021
And the wiring hole is convenient for lead welding.
The switch terminal and the cover plate are made of fixed expansion sealing iron-cobalt-nickel alloy, and the glass is iron sealing glass matched with the fixed expansion sealing iron-cobalt-nickel alloy.
The intermediate body consists of a contact reed and a nylon body, and the contact reed is formed by cross integral nylon injection molding.
The piston rod is made of hard aluminum, and the positioning ring is arranged at the bottom of the piston rod to prevent the intermediate body from moving in the switching device and prevent the piston rod from returning after being pushed out.
The utility model has the advantages that:
(1) the utility model discloses be integrated as the initiating explosive device with electric initiating explosive device and switching device at internal first, realize two and close three opening functions, it has characteristics miniaturized, integrated, lightweight, the function pluralism, is the switch of a brand-new design theory.
(2) The utility model discloses an advanced "W" circular scorching heat bridge area structure of starting a fire, heat radiating area is big, and safe ignition and action time are reliable, has also guaranteed the bridge length and the width in middle thin waist zone of heating bridge area under small-size, the small pole distance, is favorable to adjusting product resistance in suitable within range, makes the product satisfy 1A1W5min not fire and the technical requirement of the time measuring of starting a fire, has improved isolator device action time control and reliability.
(3) The utility model discloses a set up static air gap protection passageway of releasing between bridge area and casing to dangerous passageway department between main charge and casing increases the dead ring, has improved the dielectric strength between main charge and the casing, has improved dangerous passageway by the puncture ability.
(4) The utility model discloses a beryllium bronze gilding is as the contact reed, to parts gilding such as switch terminal handle and size design, makes switch terminal ability and contact reed in close contact with, adopts the whole technology of moulding plastics with contact reed and nylon cross, has guaranteed the contact resistance of product effectively, has improved the function conversion control reliability to five groups switch terminal.
(5) The utility model discloses a laser seamless welding process technique is integrative with the base and the body welding of product, has improved the leakproofness and the wholeness of product.
(6) The utility model relates to a firer actuates the device, and the comprehensive design level is domestic leading level, has higher reliability and adaptive capacity to environment, for switch design provides new method and thinking, can regard as the module to promote and be applied to in domestic other guided missile systems and weaponry.
(7) The utility model discloses a five accuse cigarette fire switching device is that collection is miniaturized, integrate, lightweight, the function pluralism becomes integrative firer's device, comprises electric initiating explosive device and switching device, realizes that two close three throw functions, before the circular telegram promptly, the switch is first, two pairs of terminals are closed, the third, four, five three are opened the terminal, the circular telegram back, the switch is first, two pairs of terminals are opened, the third, four, five three are closed to the terminal, put through three routes circuit, realize five accuse functions that fuse three routes electron triggered.
Drawings
FIG. 1 is a schematic structural view of a five-control smoke and fire isolating switch device;
FIG. 2 is a schematic structural diagram of an electric initiator;
FIG. 3 is a schematic diagram of a switchgear configuration;
FIG. 4 is a schematic view of a base structure;
FIG. 5 is a schematic diagram of the intermediate structure;
1a switching device; 2, an electric initiator; 3, a shell; 4, an insulating ring; 5, welding a bridge electrode plug; 6, covering a sheet; 7 a main charge; 8, sealing glue; 9 lead wires; 10 a base; 11 an intermediate; 12 a body; 13 a piston rod; 14 positioning plates; 15 a switch terminal; 16 cover plates; 17 contacting the reed; 18 nylon body;
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example 1
The utility model discloses mainly constitute by electric initiating explosive device 2 and switching device 1. The electrical detonator 2 is uniformly coated with 704 silicone rubber on the thread and assembled in the switchgear 1. As shown in fig. 1.
Welding a lead 9 on a welding bridge electrode plug 5, then placing the welding bridge electrode plug into a shell 3, pushing the welding bridge electrode plug into an insulating ring 4, pressing a main charge 7 which is 30mg of ignition powder into the insulating ring 4 under the pressure of 19.6MPa +/-0.98 MPa, placing a cover plate 6 into the shell 3 for closing up after painting, preparing a sealant 8 according to the proportion of epoxy resin and a curing agent of 1:0.4, coating the sealant in a cavity of the lead 9 and the shell 3, and forming an electric initiator 2 after assembly is completed, as shown in figure 2.
Pushing the piston rod 13 into the body 12; assembling the intermediate body 11 and the base 10 into a combined body by using an assembling die and a hand-press machine, respectively placing 2 positioning pieces 14 on two sides of the combined body, and integrally and horizontally installing the positioning groove of the intermediate body 11 in alignment with the body 12; the base 10 and the body 12 are welded together by a laser welding process, and the switch device is assembled as shown in fig. 3.
The five pairs of switch terminals 15 are plated with gold on their surfaces and then sealed with the cover plate 16 by glass to form a whole, which constitutes the base 10, as shown in fig. 4.
After gold plating is carried out on the surfaces of the five beryllium bronze contact reeds 17, the five beryllium bronze contact reeds and the nylon body 18 are integrally molded by adopting cross-shaped cross injection to form an intermediate body 11, as shown in fig. 5.
Example 2
A five-control smoke and fire switch device mainly comprises an electric detonator and a switch device which are connected through threads. The fuse is an initiating device integrating miniaturization, integration, light weight and function diversification, and realizes the two-closed three-open function, namely, before electrifying, the first and second pairs of terminals of the switch are closed, the third, fourth and fifth pairs of terminals are opened, after electrifying, the first and second pairs of terminals of the switch are opened, the third, fourth and fifth pairs of terminals are closed, the three-way circuit is switched on, and the three-way electronic triggering of the fuse is realized. The adopted electric detonator belongs to insensitive electric initiating explosive devices and meets the technical requirements of no ignition, static electricity prevention, stray current, short action time and the like for 1A, 1W and 5 min; the base and the intermediate body are exquisite in structural design, the switch terminal and the contact spring piece are accurately positioned and reliably contacted, and the electric safety insurance of a certain guided rocket fuse and the power supply of the rocket fuse are controlled.
The electric detonator mainly comprises a shell, a welding bridge electrode plug, an insulating ring, a cover plate, a lead, a sealant, a main charge and the like. The shell is made of stainless steel with high strength and strong corrosion resistance, and has good compatibility with the main charge. The welding bridge electrode plug is formed by welding an electrode plug and a bridge band through energy storage welding, the electrode plug is sealed by mature glass, the mechanical strength is high, the sealing performance is good, the insulating strength is high, the heat dissipation performance is good, and the environment adaptation capability and the structural design reliability of a product can be ensured; the bridge belt is made of high-resistance nickel-chromium alloy belt Cr20Ni80 material, and is processed into a simplified W-shaped circular bridge belt structure through precise wire cutting, the design not only increases the heat dissipation areas on two sides of the bridge belt, but also ensures the small size and the bridge length and width of the middle thin waist heating area bridge belt under the small polar distance, thereby being beneficial to adjusting the product resistance in a proper range, ensuring that the switch replacement time is less than or equal to 30ms, and the circular edge of the bridge belt and the metal pot can be designed into an electrostatic discharge channel, the electrostatic protection channel matched with the insulating ring jointly forms the anti-static design of the product, the ratio of the breakdown voltage of the electrostatic dangerous channel and the discharge protection channel is more than 20, and the breakdown voltage of the protection channel is 1050V < 3000V. The insulating ring selects the organic glass material with high insulating strength, increases the insulating strength between the main charge and the shell, protects the main charge from electrostatic breakdown, directly protects the discharge channel of the product, and improves the anti-static capability of the product. The cover plate is formed by stamping aluminum foil, has strong corrosion resistance and good compatibility with the charge, and can play a role in sealing and fixing the charge of the electric detonator. The electric detonator is coated with epoxy resin sealant in the cavity of the welding lead, which guarantees the good performance of the product under the conditions of severe natural environment and severe mechanical environment. The main charge adopts some ignition powder which is well matched with the bridge.
The switch device comprises a base, an intermediate body, a piston rod, a body and other parts.
The base is formed by sealing five pairs of switch terminals and a cover plate through glass, and the surface of the base is plated with gold. One end of the switch terminal is a contact end, and the other end of the switch terminal is a wiring end. The contact end is flattened, so that the contact area with the contact spring is increased, and the contact resistance is reduced. Drill after flattening of wiring end
Figure BDA0003117816510000051
The wiring hole of (2) is convenient for lead welding. The switch terminal and the cover plate are made of fixed expansion sealing iron-cobalt-nickel alloy, and the glass is made of iron sealing glass matched with the fixed expansion sealing iron-cobalt-nickel alloy, so that the switch terminal and the cover plate have good sealing performance.
The intermediate is formed by cross integral injection molding of a nylon body and a contact reed, and the contact reed is accurately and firmly positioned. The contact reed is plated with gold on the surface of beryllium bronze, so that the contact area of the contact reed and the switch terminal is increased, and the contact resistance is reduced.
The piston rod is an important part for realizing the switching of the opening and closing of each group of terminals by the action of the switch and is processed by hard aluminum materials with high strength and light weight. One end of the piston rod is a thick and thin cylindrical groove connected with the intermediate body, the other end of the piston rod is a circular disc preventing the intermediate body from moving in the switch device, a positioning ring with the thickness of 0.2mm is arranged at the bottom of the circular disc, the piston rod is fixed at the initial position in the piston cylinder of the switch body by the positioning ring at the bottom before the switch is not switched, and meanwhile, the intermediate body is positioned to prevent the switch from switching. When the switch is switched, the high-pressure gas pushes the piston rod to do linear motion in the body piston cylinder, the piston rod positioning ring is extruded and deformed by the piston cylinder and pushed into the piston cylinder, the piston rod positioning ring is fixed at the stopping position, and meanwhile, the intermediate body is pushed to move to realize the switching of the switch terminal.
The body is made of stainless steel material with high strength and strong corrosion resistance through mechanical processing, and the melting point of the stainless steel material is very close to that of the material of the cover plate.
After the switch device is assembled, the base and the body are formed by laser seamless welding, and the switch device is high in overall structure strength and strong in sealing performance and insulating capacity.
After the assembly is finished, the product has the external dimension of 44mm multiplied by 22mm multiplied by 9.5mm and the weight of 250 g; the DC resistance of the bridge circuit is 1.0 omega, and the contact resistance between each pair of terminals of the switch terminal pair 1 and the switch terminal pair 2 is not more than 0.025 omega; insulation resistance between each pair of terminals of the switch terminal pairs 3, 4 and 5 and between each terminal and the body is not less than 50M omega (DC 500V); the technical index requirements of 5A ignition, ignition and switch conversion time of less than or equal to 30ms, no ignition of 1A1W5nin, anti-static 25kV, medium withstand voltage DC500V, high current resistance 8A, high and low temperature-50 ℃ to +65 ℃ working, electromagnetic compatibility, ignition reliability of 0.998, 11-year long-term storage and the like are met.

Claims (5)

1. A five-control smoke and fire switch device comprises an electric detonator (2) and a switch device (1), wherein the electric detonator (2) is arranged in the switch device (1); the switch device (1) is formed by laser seamless welding after being assembled and is characterized in that,
the electric detonator (2) comprises a shell (3), a welding bridge electrode plug (5), an insulating ring (4), a cover plate (6), a lead (9), a sealant (8) and a main charge (7); sequentially arranging a welding bridge electrode plug (5) and an insulating ring (4) into a shell (3), welding a lead (9), injecting a sealant (8), arranging a main charge (7), arranging an upper cover plate (6), and closing up;
the switch device (1) comprises a body (12), an intermediate body (11), a positioning sheet (14), a base (10) and a piston rod (13); the piston rod (13) is pushed into the body (12); the intermediate body (11) and the base (10) are assembled into a whole, and are integrally and horizontally arranged in the body (12) through the two positioning sheets (14) to form the switch device (1).
2. A five-control fire switch device according to claim 1, wherein: the base (10) is formed by sealing five pairs of switch terminals (15) and a cover plate (16) through glass, and the surface of the base is plated with gold; one end of the switch terminal (15) is a contact end, the other end of the switch terminal is a wiring end, the contact end is flattened, the contact area with the contact reed (17) is increased, the contact resistance is reduced, and the drill is drilled after the wiring end is flattened
Figure DEST_PATH_FDA0003326972240000011
And the wiring hole is convenient for lead welding.
3. A five-control fire switch device according to claim 2, wherein: the switch terminal (15) and the cover plate (16) are made of fixed expansion sealing iron-cobalt-nickel alloy, and the glass is iron sealing glass matched with the fixed expansion sealing iron-cobalt-nickel alloy.
4. A five-control fire switch device according to claim 1, wherein: the intermediate body (11) is composed of a contact reed (17) and a nylon body (18), and the contact reed (17) is formed by cross integral nylon injection molding.
5. A five-control fire switch device according to claim 1, wherein: the piston rod (13) is made of hard aluminum, and the positioning ring is arranged at the bottom of the piston rod (13) to prevent the intermediate body (11) from moving in the switching device and prevent the piston rod (13) from returning after being pushed out.
CN202121336337.1U 2021-06-16 2021-06-16 Five accuse fireworks switching device Expired - Fee Related CN215069815U (en)

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Application Number Priority Date Filing Date Title
CN202121336337.1U CN215069815U (en) 2021-06-16 2021-06-16 Five accuse fireworks switching device

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Application Number Priority Date Filing Date Title
CN202121336337.1U CN215069815U (en) 2021-06-16 2021-06-16 Five accuse fireworks switching device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115493462A (en) * 2022-08-29 2022-12-20 中国兵器工业第二一三研究所 Cross-shaped four-way missile wing synchronous unlocking mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115493462A (en) * 2022-08-29 2022-12-20 中国兵器工业第二一三研究所 Cross-shaped four-way missile wing synchronous unlocking mechanism

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Granted publication date: 20211207