Electrostatic discharge sheet of electric initiating explosive device

Abstract

The utility model discloses an electrostatic discharge sheet of an electric initiating explosive device, which belongs to the technical field of initiating explosive devices and comprises a substrate, a metal layer with a sharp-corner discharge structure on the edge is arranged on the upper surface of the substrate, a solder mask layer is arranged on the lower surface of the substrate, and two lead holes are arranged on the substrate. And the lead hole is an inner wall metalized through hole formed by penetrating through the metal layer, the substrate and the solder mask layer. According to the utility model, an electrostatic discharge channel can be formed through the sharp corner area and an assembled initiating explosive device electrode plug shell, so that electrostatic discharge of an initiating explosive device is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of initiating explosive device, especially an electro-explosive device electrostatic discharge sheet. BACKGROUND

[0002] Electro-explosive devices have been widely used in weapon system ignition, ammunition trajectory correction and satellite attitude control and other high-tech fields due to their outstanding technical advantages of low ignition energy, fast excitation speed, high safety, good batch consistency and low production cost. However, with the continuous progress of science and technology, the widespread use of high-power radio equipment and electromagnetic weapons has made the electromagnetic environment in the application of initiating explosive devices increasingly complex and severe. In practical applications, electro-explosive devices are extremely susceptible to electrostatic discharge. Electrostatic discharge is a high-energy rapid release process that can cause initiating explosive devices to be subjected to a high instantaneous current impact and local overheating, thereby causing electrical breakdown, material damage or performance degradation, and even causing misfire or ignition failure. These problems pose a significant hidden danger to equipment operation and operator safety.

[0003] Currently, electro-explosive devices usually use a method of setting a small-gap electrostatic discharge protection channel to solve the problem of static electricity prevention. However, as initiating explosive devices gradually develop towards miniaturization and high integration, the internal spacing of the devices becomes smaller, and the voltage resistance capability also decreases accordingly, so it is usually not possible to set a small-gap electrostatic discharge protection channel inside the electro-explosive device. SUMMARY

[0004] The utility model discloses to solve the problem that initiating explosive devices are susceptible to electrostatic discharge damage, and proposes an electro-explosive device electrostatic discharge sheet. The discharge sheet can be assembled with the electrode plug of the initiating explosive device through the lead hole, thereby achieving electrostatic protection of the electro-explosive device.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of an electro-explosive device electrostatic discharge sheet, which includes a substrate. A metal layer with a sharp-corner discharge structure is arranged on the upper surface of the substrate. A solder mask layer is arranged on the lower surface of the substrate. Two lead holes are arranged on the substrate. The lead holes are inner-wall metallized through-holes formed by penetrating the metal layer, the substrate and the solder mask layer.

[0006] The utility model technical scheme is further improved in that the shape of the substrate is circular, and the material is glass fiber.

[0007] The utility model technical scheme is further improved in that the material of the metal layer is copper.

[0008] The utility model technical scheme is further improved in that the metal layer structure is two diametrically opposed semicircular shapes. Each semicircular shape is filled with multiple sharp corners for discharging static electricity. One lead hole is arranged on each semicircular shape.

[0009] The further improvement of the technical scheme of the utility model lies in that the distance between the sharp corners on the metal layer and the outer edge of the substrate is 0.25-0.3mm.

[0010] Thanks to the above technical scheme, the technical progress achieved by the utility model is that the electrostatic discharge sheet of the electric detonator can improve the anti-static ability of the electric detonator without affecting the internal structure of the electric detonator. The metal layer forms two multi-sharp-corner fan-shaped electrostatic discharge structures on the front surface of the discharge sheet, and can form an electrostatic discharge channel with the electrode plug shell of the assembled electric detonator through the sharp corner area, thereby realizing the electrostatic discharge of the electric detonator. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art;

[0012] Figure 1 is the front view of the electrostatic discharge sheet of the utility model;

[0013] Figure 2 is the sectional view of the electrostatic discharge sheet of the utility model;

[0014] Figure 3 is the back view of the electrostatic discharge sheet of the utility model;

[0015] Figure 4 is the assembly schematic view of the electrostatic discharge sheet and the electric detonator electrode plug of the utility model;

[0016] Among them, 1, substrate, 2, lead hole, 3, metal layer, 4, solder resist layer. DETAILED DESCRIPTION

[0017] The utility model will be further described in detail in combination with the embodiments:

[0018] As shown in Figure 1 , Figure 2 and Figure 3 , it is a structure schematic view of an electric detonator electrostatic discharge sheet, which comprises a substrate 1, the shape of the substrate 1 is circular, the material is glass fiber, and the thickness can be customized and designed according to actual use. A metal layer 3 is arranged on the upper surface of the substrate 1, the material of the metal layer 3 is copper, and a plurality of sharp corner structures are arranged on the edge of the metal layer for discharging static electricity. A solder resist layer 4 is arranged on the lower surface of the substrate 1. In the embodiment, the specific structure of the metal layer 3 is two multi-sharp-corner fan-shaped electrostatic discharge structures. As shown in Figure 1As shown in the two relatively close semicircles, each semicircular arc position is full of a plurality of sharp corners for discharging static electricity. The sharp corners on the metal layer 3 are 0.25-0.3mm away from the outer edge of the substrate 1. The substrate 1 is provided with two lead holes 2, and the size and position of the two lead holes 2 can be adjusted according to the size and position of the electrode plug needle of the electric explosive device, so as to adapt to different types of electric explosive device electrode plugs. The lead hole 2 is a metalized through hole with an inner wall formed by penetrating the metal layer 3, the substrate 1 and the solder mask layer 4. Specifically, one lead hole 2 is initially on one semicircular metal layer 3.

[0019] As shown in the two relatively close semicircles, each semicircular arc position is full of a plurality of sharp corners for discharging static electricity. The sharp corners on the metal layer 3 are 0.25-0.3mm away from the outer edge of the substrate 1. The substrate 1 is provided with two lead holes 2, and the size and position of the two lead holes 2 can be adjusted according to the size and position of the electrode plug needle of the electric explosive device, so as to adapt to different types of electric explosive device electrode plugs. The lead hole 2 is a metalized through hole with an inner wall formed by penetrating the metal layer 3, the substrate 1 and the solder mask layer 4. Specifically, one lead hole 2 is initially on one semicircular metal layer 3. Figure 4 As shown in the two relatively close semicircles, each semicircular arc position is full of a plurality of sharp corners for discharging static electricity. The sharp corners on the metal layer 3 are 0.25-0.3mm away from the outer edge of the substrate 1. The substrate 1 is provided with two lead holes 2, and the size and position of the two lead holes 2 can be adjusted according to the size and position of the electrode plug needle of the electric explosive device, so as to adapt to different types of electric explosive device electrode plugs. The lead hole 2 is a metalized through hole with an inner wall formed by penetrating the metal layer 3, the substrate 1 and the solder mask layer 4. Specifically, one lead hole 2 is initially on one semicircular metal layer 3.

[0020] In summary, the electrostatic discharge sheet structure is simple, convenient to assemble, and can be assembled in any front or back surface according to actual use, and can discharge static electricity accumulated in the system in real time, thereby avoiding spark caused by static discharge, and effectively preventing accidental ignition of the electric explosive device and flammable and explosive substances. In actual use, the size and position of the two lead holes can be changed to adapt to different types of electric explosive devices, and the size of the metal layer multi-sharp corner fan-shaped electrostatic discharge structure can be changed to meet different static sensitivity requirements. The electrostatic discharge sheet for electric explosive device provided by the present application provides a new solution to the problem of static electricity protection of electric explosive device, and provides a certain technical reference for the application of electric explosive device.

[0021] The above-described embodiments are merely preferred embodiments of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope of the present application.

Claims

1. An electrostatic discharge sheet for an electric detonator comprising a substrate (1), characterized in that: A metal layer (3) with sharp corner discharge structure is arranged on the upper surface of a substrate (1), a solder resist layer (4) is arranged on the lower surface of the substrate (1), and two lead holes (2) are arranged on the substrate (1), the lead holes (2) being inner wall metallized through holes formed through the metal layer (3), the substrate (1) and the solder resist layer (4).

2. An electrostatic discharge sheet for an electric detonator according to claim 1, characterized in that: The substrate (1) is circular in shape and made of glass fiber.

3. An electrostatic discharge sheet for an electric detonator according to claim 1, characterized in that: The metal layer (3) is made of copper.

4. An electrostatic discharge sheet for an electric detonator according to claim 3, characterized in that: The metal layer (3) is in the form of two diametrically opposed semicircles, and each semicircle is filled with a plurality of sharp corners for discharging static electricity, and one lead hole (2) is arranged on each semicircle.

5. An electrostatic discharge patch for an electric detonator according to claim 4, characterized in that: The distance between the sharp corners on the metal layer (3) and the outer edge of the substrate (1) is 0.25-0.3 mm.

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