Short circuit protection plug for pyrotechnic transfer

Abstract

This utility model relates to the field of pyrotechnic safety technology, specifically a short-circuit protection plug for transporting pyrotechnics. The utility model mounts the housing onto the socket of the pyrotechnic, and the connecting part clamps the body to the socket. The short-circuit probes on the connector can contact the socket to form a first layer of short-circuit safety protection, reducing the impact of stray current or static electricity accumulation on the safety of pyrotechnic transport during active transport. The conductive assembly forms a conductive path between the connecting part, the short-circuit probes, and the guide assembly. The power supply is short-circuited by connecting the connecting part, which directly contacts the metal housing of the pyrotechnic, to the guide assembly and part of the short-circuit probes, thus guiding and releasing any other stray current or static electricity accumulation to ground, forming a second layer of safety protection.

Description

Technical Field

[0001] This utility model relates to the field of pyrotechnic safety technology, and specifically to a short-circuit protection plug for the transfer of pyrotechnics. Background Technology

[0002] Pyrotechnics (such as electric detonators, igniters, and detonating cords) are essentially devices that release enormous energy through precisely controlled, minute energy inputs. Many electric pyrotechnics can be accidentally detonated with only a tiny current (tens of milliamperes or even less) or a weak electrostatic spark (in the millijoule range).

[0003] Since pyrotechnics generally require only low energy to detonate, they are extremely sensitive. This extreme sensitivity dictates that the possibility of all external energy input must be reduced to near zero during the transport process. However, pyrotechnics may come into contact with a variety of energy forms during transport.

[0004] Dangerous ignition energies come not only from open flames or electric currents, but also from: static electricity, electromagnetic radiation (EMI / RFI), thermal shock, and mechanical shock. Static electricity can be generated by friction between the human body, packaging materials, and vehicles. Electromagnetic radiation (EMI / RFI) is generated by electromagnetic fields produced by radio waves, radar, mobile phones, high-voltage lines, etc. The fuse of a pyrotechnic device acts like an antenna and induces current. Thermal shock can produce flames. Continued impact can cause vibrations. Once accidentally ignited, the process cannot be interrupted, and the consequences are usually catastrophic and irreversible.

[0005] Therefore, the transport of pyrotechnics is not simply a matter of logistics. The transport route may contain radio transmitting equipment, radar, high-voltage power lines, and even walkie-talkies. The electromagnetic fields generated by these devices can induce current in the pyrotechnic's fuses. If the fuses are open (not short-circuited), the two fuses act like an antenna, and if the induced voltage and current are large enough, they can flow through the bridging wire and cause it to heat up, leading to accidental detonation. During transport, static electricity can easily be generated due to vibration and friction (e.g., friction between the pyrotechnic and packaging materials, and between the packaging materials and the transport container). Inside the packaging, the two exposed fuse ends may accidentally come into contact with metal parts of the transport container (such as screws or the container walls) due to vibration. If this metal part happens to be connected to the vehicle chassis or other grounding path, and the vehicle's electrical system has a leakage current, an accidental current loop may be formed, and the current flowing through the bridging wire can cause detonation.

[0006] The short-circuit caps of existing pyrotechnic products are mainly modified from the plug-in connectors of the input socket, and the internal components have little commonality.

[0007] Connectors used for shorting become useless after transportation, which simplifies the product structure and leads to compromises in shielding performance. As a result, the shielding performance is relatively poor and the electrostatic protection is weaker. Utility Model Content

[0008] The technical problem to be solved by this utility model is to provide a short-circuit protection plug for the transportation of pyrotechnics that reduces the impact of stray current or static electricity accumulation on the safety of pyrotechnics transportation during active transportation, guides other stray current or static electricity accumulation to the housing ground and releases it, forming a second safety protection.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0010] A short-circuit protection plug for transporting pyrotechnic materials, comprising:

[0011] The body includes a housing, on which an installation area is provided, and the housing is made of insulating material;

[0012] A shorting assembly is disposed on the housing. The shorting assembly includes a plurality of shorting probes, which are evenly disposed on the mounting area. The shorting probes are used to contact the socket to form short-circuit protection.

[0013] A guide component is disposed on the installation area, and the guide component is used to guide the connection between the body and the socket;

[0014] A connecting component is disposed on the body, the connecting component includes a connecting part, the connecting part is disposed on both sides of the housing, and the connecting part is used to clamp and connect the body and the socket;

[0015] A conductive assembly is disposed in the bottom area of ​​the housing. The connecting part is connected to the guiding assembly. The shorting probe and the guiding assembly are both connected to the conductive assembly. The conductive assembly is used to form a conductive line by connecting the connecting part, the shorting probe and the guiding assembly.

[0016] In one embodiment of this utility model, the installation area is provided with a connecting groove that matches the shape of the socket. The connecting groove is provided with a shorting hole and a guide hole. The shorting hole and the guide hole are arranged opposite to the contact point on the socket. The shorting probe is disposed on the shorting hole, and the guide component is disposed on the guide hole with a shape that matches the socket.

[0017] In one embodiment of the present invention, the shorting probe includes a fixed cylinder and a contact needle. The fixed cylinder has an opening, and the contact needle passes through the opening. A limiting block is provided at the bottom of the contact needle so that the contact needle cannot detach from the opening. A spring is provided between the fixed cylinder and the limiting block so that the contact needle forms a spring pin structure.

[0018] In one embodiment of this utility model, a limiting ring protrudes outward from the outer wall of the fixed cylinder, and the diameter of the contact needle is smaller than the diameter of the guide cylinder, so that a stepped structure is formed between the contact needle and the guide cylinder. A first limiting surface and a second limiting surface are provided on the shorting hole on the mounting area. The first limiting surface is connected to the limiting ring, and the second limiting surface is connected to the stepped structure. A guide channel for accommodating the contact needle is formed between the second limiting surface and the surface of the mounting area.

[0019] In one embodiment of this utility model, the guiding component includes a guide post, the bottom of which is provided with a mounting part. The diameter of the mounting part is larger than the diameter of the guide post, so that a stepped surface is formed between the mounting part and the guide post. The guide hole in the mounting area is provided with a fixing surface, which is connected to the stepped surface. The height of the fixing post located in the mounting area is greater than the height of the shorting probe located in the mounting area.

[0020] In one embodiment of this utility model, the connecting part includes a fixing seat, which is disposed on the housing. The fixing seat extends downward and bends to form a pressing part. A connecting plate is disposed on the pressing part, and a clamping part is disposed at the free end of the connecting plate. A slot matching the socket is disposed on the clamping part. By pressing the pressing part, deformation occurs, causing the clamping part on the connecting plate to be clamped onto the socket.

[0021] In one embodiment of the present invention, the conductive component includes a conductive base and a conductive body. The conductive base is disposed at the bottom of the shorting probe and the guide component, and the conductive body is sequentially connected to the conductive base located at the bottom of the shorting probe and the guide component, so that the connecting part, the shorting probe and the guide component form a conductive line.

[0022] In one embodiment of the present invention, a mounting groove is provided at the bottom of the housing, the conductive component is disposed in the mounting groove, and the mounting groove is filled with potting material, which is used to fix the position of the conductive component and the shorting probe and guide component connected to the conductive component.

[0023] In one embodiment of this utility model, the connecting part is connected to the fixing plate, a connecting port is provided on one side of the housing, the connecting port communicates with the guide hole, the fixing plate passes through the connecting port and is mounted on the guide hole, the fixing plate is provided with a connecting hole that matches the guide post, the guide post is installed on the guide hole and presses the fixing plate against the fixing surface.

[0024] In one embodiment of this utility model, the conductive base is provided with a fixed slot that matches the conductor, and the conductor is sequentially engaged in the fixed slot of each conductive base to form a U-shaped conductor.

[0025] The beneficial effects of this utility model are:

[0026] This invention mounts the housing onto the socket of a pyrotechnic item. The connecting part clamps and connects the main body to the socket. The short-circuit probe on the connecting part can contact the socket to form the first short-circuit safety protection, reducing the impact of stray current or static electricity accumulation on the safety of the pyrotechnic item during active transport. The conductive component forms a conductive line with the connecting part, the short-circuit probe, and the guide component. The power supply is short-circuited by connecting the connecting part, which is in direct contact with the metal housing of the pyrotechnic item, to the guide component and part of the short-circuit probe. This also guides other stray current or static electricity accumulation to the housing ground and releases it, forming the second safety protection. The guide component guides the connection between the main body and the socket. By using different shaped elastic pins for different socket shapes of pyrotechnic items, the short-circuit connector can be quickly blind-plugged and stably contacted, increasing the flexibility and maneuverability of the pyrotechnic item transport. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a short-circuit protection plug for transporting pyrotechnic items according to this utility model.

[0028] Figure 2 This is a schematic diagram of the conductive component of this utility model.

[0029] Figure 3 This is a schematic diagram of the connection component of this utility model.

[0030] Figure 4 This is a schematic diagram of the shorting component of this utility model.

[0031] The following are the labeling instructions in the diagram: 1. Housing; 11. Mounting area; 12. Connecting groove; 13. Mounting slot; 2. Connecting part; 21. Fixing seat; 22. Pressing part; 23. Connecting plate; 24. Clamping part; 25. Fixing plate; 26. Connecting port; 3. Shorting probe; 31. Fixing cylinder; 32. Contact pin; 33. Limiting block; 34. Limiting ring; 35. Stepped structure; 36. Spring; 37. Second limiting surface; 38. Guide channel; 4. Guide assembly; 41. Guide post; 42. Mounting part; 43. Stepped surface; 441. Fixing surface; 5. Conducting assembly; 51. Conductor; 52. Conductive seat; 53. Fixing slot; 54. Potting material. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0033] Reference Figures 1-4 As shown, a short-circuit protection plug for transporting pyrotechnic materials includes:

[0034] The main body includes a housing 1, on which an installation area 11 is provided, and the housing 1 is made of insulating material;

[0035] A shorting assembly is disposed on the housing 1. The shorting assembly includes a plurality of shorting probes 3, which are evenly disposed on the mounting area 11. The shorting probes 3 are used to contact the socket to form short-circuit protection.

[0036] A guide component 4 is disposed on the installation area 11, and the guide component 4 is used to guide the connection between the body and the socket.

[0037] A connecting component is disposed on the main body. The connecting component includes a connecting part 2, which is disposed on both sides of the housing 1. The connecting part 2 is used to clamp and connect the main body and the socket.

[0038] The conductive component 5 is located in the bottom area of ​​the housing 1. The connecting part 2 is connected to the guiding component 4. The shorting probe 3 and the guiding component 4 are both connected to the conductive component 5. The conductive component 5 is used to form a conductive line by connecting part 2, shorting probe 3 and guiding component 4.

[0039] This invention mounts the housing 1 onto the socket of a pyrotechnic item. The connecting part 2 clamps and connects the main body to the socket. The short-circuit probe 3 on the connecting part 2 can contact the socket to form the first short-circuit safety protection, reducing the impact of stray current or static electricity accumulation on the safety of the pyrotechnic item during active transport. The conductive component 5 forms a conductive line with the connecting part 2, the short-circuit probe 3, and the guide component 4. The power supply is short-circuited by connecting the connecting part 2, which is in direct contact with the metal housing of the pyrotechnic item, to the guide component 4 and part of the short-circuit probe 3. Other stray current or static electricity accumulation is guided to the housing ground and released, forming the second safety protection. The guide component 4 is used to guide the connection between the main body and the socket. By matching different shaped elastic pins to the socket holes of different pyrotechnic items, the short-circuit connector can be quickly blindly inserted and stably contacted, increasing the flexibility and maneuverability of the pyrotechnic item transport.

[0040] This invention can short-circuit the control circuit of pyrotechnic items, causing the control circuit to fail. When it is needed, removing this product will restore its function. At the same time, the grounding structure can lead out and release stray current or static electricity accumulation, thereby enhancing the safety of the pyrotechnic item transportation process.

[0041] In one embodiment of this utility model, the installation area 11 is provided with a connecting groove 12 that matches the shape of the socket. The connecting groove 12 is provided with a shorting hole and a guide hole. The shorting hole and the guide hole are arranged opposite to the contact point on the socket. The shorting probe 3 is disposed on the shorting hole. The guide component 4 is disposed on the guide hole and its shape matches the socket.

[0042] Specifically, the socket is provided with a connection position that matches the connection groove 12, which can ensure the connection stability between the socket and the plug, ensure the installation accuracy of the socket and the plug, and also facilitate the connection accuracy of the contact point between the shorting probe 3 and the socket.

[0043] In one embodiment of the present invention, the shorting probe 3 includes a fixing cylinder 31 and a contact needle 32. The fixing cylinder 31 has an opening, and the contact needle 32 passes through the opening. A limiting block 33 is provided at the bottom of the contact needle 32 so that the contact needle 32 cannot be detached from the opening. A spring 36 is provided between the fixing cylinder 31 and the limiting block 33 so that the contact needle 32 forms a spring pin structure.

[0044] Specifically, a spring 36 is provided between the fixed cylinder 31 and the limiting block 33, so that the contact pin 32 forms a spring pin structure. The contact pin 32 of the short-circuit probe 3 is connected to the contact point of the socket. By controlling the elastic force of the spring 36 through the contact form of the spring contact pin, the short-circuit contact under vibration is satisfied. When the product is subjected to impact and vibration, the contact point is in normal contact and no instantaneous disconnection occurs. Moreover, the contact point shape of the contact pin 32 can be selected according to different connectors to increase the contact surface.

[0045] In this embodiment, when the spring 36 is inserted into the fixed cylinder 31, the spring 36 is in a compressed state, which corresponds to the maximum axial installation distance. The initial elastic force of the spring 36 should be greater than the maximum insertion force of the product to ensure smooth insertion and reliable contact of the product.

[0046] When spring 36 reaches its maximum compression, the axial installation spacing is at its minimum. The dimensions of spring 36 must be determined using existing spring force calculation formulas based on the required axial tolerance for installation and the maximum insertion force of the product. The elastic force of spring 36 in its working state should simultaneously ensure normal contact at the contact points without momentary disconnection when the product is subjected to impact and vibration. After determining the dimensions and elastic force curve of spring 36, substituting the required maximum withstandable impact and vibration acceleration and its own weight, the resulting force value should be less than the compression force of spring 36 in its working state.

[0047] The contact pin 32 can be a concave contact, a flat contact, or a tapered plug (3.5mm headphone plug style). Depending on the type, concave contacts, flat contacts, or contacts corresponding to the socket can be selected. Both concave and flat contacts form a conductive path by contacting the contacts on the socket through the shape of the contact tip. The elastic pin for the socket uses a combination of in-hole contact and socket end contact. The guide tip of the pin inserts into the socket and contacts the spring or wire spring to conduct electricity. The stepped surface behind the plug also contacts the end face of the socket due to the elastic force of the spring 36, thereby increasing the contact area and ensuring reliable conduction.

[0048] In one embodiment of this utility model, a limiting ring 34 protrudes outward from the outer wall of the fixing cylinder 31. The diameter of the contact needle 32 is smaller than the diameter of the guide cylinder, so that a stepped structure 35 is formed between the contact needle 32 and the guide cylinder. A first limiting surface and a second limiting surface 37 are provided on the shorting hole on the mounting area 11. The first limiting surface is connected to the limiting ring 34, and the second limiting surface 37 is connected to the stepped structure 35. A guide channel 38 for accommodating the contact needle 32 is formed between the second limiting surface 37 and the surface of the mounting area 11.

[0049] Specifically, the first limiting surface is connected to the limiting ring 34, and the second limiting surface 37 is connected to the stepped structure 35, which facilitates the quick assembly of the shorting probe 3, ensures the assembly accuracy of the shorting probe 3, and improves the connection accuracy of the contact point between the shorting probe 3 and the socket. A guide channel 38 for accommodating the contact pin 32 is formed between the second limiting surface 37 and the surface of the installation area 11. When the number of shorting probes 3 on the socket and the plug does not match, the contact pin 32 can be compressed into the guide channel 38 for hiding when the plug and socket are installed.

[0050] In one embodiment of the present invention, the guide assembly 4 includes a guide post 41, and a mounting part 42 is provided at the bottom of the guide post 41. The diameter of the mounting part 42 is larger than the diameter of the guide post 41, so that a stepped surface 43 is formed between the mounting part 42 and the guide post 41. The guide hole of the mounting area 11 is provided with a fixing surface 441, and the fixing surface 441 is connected to the stepped surface 43. The height of the fixing post located on the mounting area 11 is greater than the height of the shorting probe 3 located on the mounting area 11.

[0051] Specifically, since the height of the fixed post located in the installation area 11 is greater than the height of the shorting probe 3 located in the installation area 11, the guide post 41 enters the guide hole of the socket first for connection guidance, which can ensure the installation accuracy of the socket and the plug, and at the same time facilitate the connection accuracy of the contact point between the shorting probe 3 and the socket, and facilitate the shorting of the control circuit of the pyrotechnics, so as to keep the pyrotechnics control circuit from malfunctioning during transportation.

[0052] Meanwhile, if the socket has a housing ground, the guide post 41 is mainly connected to the housing ground of the socket. When the guide post 41 of the present invention is inserted into the socket, it contacts the housing ground to form a circuit, providing an absolutely safe and controllable discharge path for possible intrusion current (including static electricity).

[0053] Shorting the two leads is sometimes insufficient. When two leads are connected, the entire packaging box (containing the shorted pyrotechnics) accumulates static electricity due to friction with the metal of the transport vehicle caused by vibration. This can lead to leakage in the electrical system of the transport vehicle, making the entire metal packaging box electrified.

[0054] If the short-circuited lead is not connected to the casing (the metal outer shell of the packaging box), a high voltage difference will be formed between the live casing and the short-circuited lead inside. This voltage difference may break down the lead insulation layer or generate current in the lead circuit through capacitive coupling. Ultimately, the current may find a path (such as through the broken insulation) to flow through the bridge wire, causing danger.

[0055] In one embodiment of this utility model, the connecting part 2 includes a fixing seat 21, which is disposed on the housing 1. The fixing seat 21 extends downward and bends to form a pressing part 22. A connecting plate 23 is disposed on the pressing part 22. A clamping part 24 is disposed at the free end of the connecting plate 23. A slot matching the socket is disposed on the clamping part 24. By pressing the pressing part 22, deformation occurs, causing the clamping part 24 on the connecting plate 23 to be clamped onto the socket.

[0056] The connecting part 2 of this utility model adopts an integral injection molding structure with the main body, which can not only increase the fixing strength of the connecting part 2, but also reduce the production cost and ensure the economic efficiency of the product.

[0057] Specifically, the fixing seat 21, connecting plate 23, pressing part 22, and clamping part 24 on the connecting part 2 are all made of metal conductive material through stamping and bending, which gives the connecting part 2 a certain degree of elasticity. When the housing 1 moves toward the socket, the connecting part 2 moves toward the socket. When the clamping part 24 contacts the socket, the connecting plate 23 will deform to a certain extent due to the external force of the socket. The metal housing is provided with a locking block that matches the slot of the clamping part 24, so that the clamping part 24 passes through the socket and connects with the locking block, thereby completing the fixed connection between the vehicle head and the socket. At the same time, the clamping part 24 is clamped on the housing. When the socket and the housing are not insulated from the ground, the housing can be connected to the ground by fixing the connecting part 2 to the pyrotechnic housing. This provides an absolutely safe and controllable discharge path for possible intrusion currents (including static electricity), achieving "equipotential bonding", which is the second key safety measure.

[0058] In one embodiment of the present invention, the conductive component 5 includes a conductive base 52 and a conductive body 51. The conductive base 52 is disposed at the bottom of the shorting probe 3 and the guide component 4. The conductive body 51 is sequentially connected to the conductive base 52 located at the bottom of the shorting probe 3 and the guide component 4, so that the connecting part 2, the shorting probe 3 and the guide component 4 form a conductive line.

[0059] Specifically, the shorting probe 3 and the conductive base 52, as well as the guide component 4 and the conductive base 52, are all integrally molded structures, which can easily hold the wire or other conductive body 51 on the conductive base 52, facilitating subsequent welding or direct potting, ensuring the connection stability between the conductive base 52 and the conductive body 51, and reducing the assembly difficulty.

[0060] The connecting part 2, the shorting probe 3, and the guiding assembly 4 form a conductive path for safe charge discharge: connecting the short-circuited lead to the chassis ground (usually the packaging box is metal and self-grounded) provides a safe, reliable, low-impedance discharge path for any charge (whether static electricity or leakage) that may accumulate on the chassis or enter the chassis through external means. These currents will be directly conducted to the ground or vehicle chassis through the grounding wire, without seeking other dangerous paths (such as through the pyrotechnic bridge wire).

[0061] It also enables equipotential bonding, ensuring that the chassis, short-circuit connector, and two leads are all at the same ground potential. There is no potential difference between them, thus completely eliminating the risk of insulation breakdown or sparking due to potential differences;

[0062] By setting up redundant protection with multiple short-circuit probes 3 and guide posts 41, even if the short-circuit protection fails for some reason, the wire connected to the chassis ground still exists, and the current will still be directly conducted to the ground, instead of forming a complete loop that flows through the bridge wire to another lead.

[0063] Grounding is a safety measure addressing the interaction between the entire packaging system and the external environment. Together, these two elements constitute the core electrical safety barrier for pyrotechnic devices during storage, transportation, and operation.

[0064] The guide post 41 is mainly connected to the ground of the socket housing. When the guide post 41 of the product of this utility model is inserted into the socket, it makes contact with the housing ground to form a circuit. When the housing of the socket is independent and insulated from the housing ground, it can be connected to the housing ground by fixing it to the pyrotechnic housing through the connecting part 2. It can be grounded for different types of products and has a wide range of applications.

[0065] In one embodiment of the present invention, the bottom of the housing 1 is provided with a mounting groove 13, the conductive component 5 is disposed in the mounting groove 13, and the mounting groove 13 is filled with a potting material 54. The potting material 54 is used to fix the position of the conductive component 5 and the shorting probe 3 and the guide component 4 connected to the conductive component 5.

[0066] Specifically, the mounting groove 13 is filled with potting material 54. The potting material 54 is used to fix the position of the conductive component 5 and the shorting probe 3 and guide component 4 connected to the conductive component 5. It can facilitate the installation of the shorting probe 3 in the shorting hole, the installation of the guide post 41 in the guide hole, and the assembly of the conductor 51 by sequentially snapping it into the fixing slot 53 of each conductive seat 52. This reduces the introduction of other metal conductors for fixing, avoids misassembly during processing, and improves product quality. At the same time, the potting insulating material is softer than the characteristic materials of the shorting probe 3, socket, and guide post 41. In case of an accident, the potting material 54 in the mounting groove 13 can play a pressure relief role, further reducing the occurrence of accidents and providing a systematic safety improvement.

[0067] In one embodiment of this utility model, the connecting part 2 is connected to the fixing plate 25, and a connecting port 26 is provided on one side of the housing 1. The connecting port 26 communicates with the guide hole. The fixing plate 25 passes through the connecting port 26 and is mounted on the guide hole. The fixing plate 25 is provided with a connecting hole that matches the guide post 41. The guide post 41 is installed on the guide hole and presses the fixing plate 25 onto the fixing surface 441.

[0068] Specifically, the guide post 41 is installed on the guide hole and presses the fixing plate 25 onto the fixing surface 441, so that the connecting part 2 and the guide post 41 form a conductive line. The metal housing is provided with a card block that matches the card slot of the clamping part 24, so that the clamping part 24 is connected to the card block through the socket, thereby completing the fixed connection between the car head and the socket. This connects the structure of the pyrotechnic device housing to the ground, which can effectively introduce stray current or static electricity accumulation generated in the control circuit during the transfer process into the ground wire for release, preventing stray current or static electricity accumulation from affecting the transfer safety of the pyrotechnic device.

[0069] In one embodiment of the present invention, the conductive base 52 is provided with a fixing slot 53 that matches the conductor 51, and the conductor 51 is sequentially engaged in the fixing slot 53 of each conductive base 52 to form a U-shaped conductor.

[0070] Specifically, the fixed slots 53 on the conductive base 52 facilitate the mounting of conductive bodies 51, such as wires, onto the conductive base 52, enabling subsequent welding or direct potting. This ensures the connection stability between the conductive base 52 and the conductive body 51, reducing assembly difficulty. The conductive bodies 51 are sequentially mounted on the fixed slots 53 of each conductive base 52 to form a U-shaped conductor. On one hand, the U-shaped conductor facilitates the sequential connection of the conductive bodies 51 from the inside out, simplifying assembly. When the U-shaped conductor is bent and mounted on the fixed slot 53, the spring force generated during bending ensures that the conductive bodies 51 are firmly secured to the fixed slot 53, further improving the connection stability between the conductive bodies 51 and the conductive base 52. On the other hand, the U-shaped conductor has a relatively large spacing, preventing overheating caused by stray current or static electricity accumulation during active transfer, thus facilitating rapid heat dissipation and ensuring the performance of the plug.

[0071] Short-circuiting the leads of the control circuit of a pyrotechnic device effectively eliminates potential differences: after short-circuiting, the two leads always maintain the same potential (voltage), and it is impossible for a voltage difference sufficient to cause a spark discharge to occur between them; it avoids acting as an antenna: the loop area of ​​the short-circuited leads is greatly reduced, effectively reducing the ability to capture electromagnetic waves in the environment, thereby greatly reducing the generation of induced current; it also provides a low-impedance path: even if a small induced current or electrostatic current is generated, it will preferentially circulate between the two leads through the extremely low-resistance short-circuit path, rather than flowing through the relatively high-resistance bridge wire. Current always chooses the path of least impedance.

[0072] Therefore, short-circuit protection is the first and most important safety measure to prevent electrical and explosive devices from being accidentally ignited during transportation due to electromagnetic induction, static electricity, and accidental contact.

[0073] Usage process

[0074] The socket is installed on the metal casing of the pyrotechnic device. The socket has contact points matching the shorting probe 3, guide holes matching the guide post 41, and connection positions matching the connecting groove 12. The guide post 41 and shorting probe 3 on the casing 1 are inserted into the socket. Because the height of the fixed post on the installation area 11 is greater than the height of the shorting probe 3 on the installation area 11, the guide post 41 first enters the guide hole of the socket for connection guidance. This ensures the installation accuracy of the socket and plug, and also facilitates the connection accuracy of the contact points between the shorting probe 3 and the socket. This facilitates shorting the control circuit of the pyrotechnic device, preventing the control circuit from malfunctioning during transport. The plug continues to move towards the socket, allowing the contact pin 32 of the shorting probe 3 to connect with the contact point of the socket. The fixing seat 21 and connecting plate on the connecting part 2... 23. Both the pressing part 22 and the clamping part 24 are made of metal conductive material, which is stamped and bent to support the connection part 2, giving the connection part 2 a certain degree of elasticity. When the housing 1 moves toward the socket, the connection part 2 moves toward the socket. When the clamping part 24 contacts the socket, the connection plate 23 will deform to a certain extent due to the external force of the socket. The metal housing is provided with a card block that matches the card slot of the clamping part 24, so that the clamping part 24 passes through the socket and connects with the card block, thereby completing the fixed connection between the car head and the socket. This makes it a short-circuit connector that can be used in the process of transporting pyrotechnics. It reduces the impact of stray current or static electricity accumulation on the safety of pyrotechnic transport during active transport. By increasing the short-circuit contact force, shielding the output structure, and guiding blind insertion design, reliable contact is provided for the short-circuit connector, and the connector can be quickly inserted and removed.

[0075] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A short circuit protection plug for the transfer of a pyrotechnic device, characterized in that include: The body includes a housing, on which an installation area is provided, and the housing is made of insulating material; A shorting assembly is disposed on the housing. The shorting assembly includes a plurality of shorting probes, which are evenly disposed on the mounting area. The shorting probes are used to contact the socket to form short-circuit protection. A guide component is disposed on the installation area, and the guide component is used to guide the connection between the body and the socket; A connecting component is disposed on the body, the connecting component includes a connecting part, the connecting part is disposed on both sides of the housing, and the connecting part is used to clamp and connect the body and the socket; A conductive assembly is disposed in the bottom area of ​​the housing. The connecting part is connected to the guiding assembly. The shorting probe and the guiding assembly are both connected to the conductive assembly. The conductive assembly is used to form a conductive line by connecting the connecting part, the shorting probe and the guiding assembly.

2. The short circuit protection plug for the transfer of a pyrotechnic device according to claim 1, characterized in that The installation area is provided with a connecting groove that matches the shape of the socket. The connecting groove is provided with a shorting hole and a guide hole. The shorting hole and the guide hole are positioned opposite to the contact point on the socket. The shorting probe is disposed on the shorting hole. The guide assembly is disposed on the guide hole and its shape matches that of the socket.

3. The short circuit protection plug for the transfer of the initiating explosive device according to claim 1, characterized in that, The shorting probe includes a fixed cylinder and a contact pin. The fixed cylinder has an opening, and the contact pin passes through the opening. A limit block is provided at the bottom of the contact pin so that the contact pin cannot be disengaged from the opening. A spring is provided between the fixed cylinder and the limit block so that the contact pin forms a spring pin structure.

4. The short circuit protection plug for the transfer of a detonator according to claim 3, wherein A limiting ring protrudes outward from the outer wall of the fixed cylinder. The diameter of the contact needle is smaller than that of the guide cylinder, so that a stepped structure is formed between the contact needle and the guide cylinder. A first limiting surface and a second limiting surface are provided on the shorting hole in the mounting area. The first limiting surface is connected to the limiting ring, and the second limiting surface is connected to the stepped structure. A guide channel for accommodating the contact needle is formed between the second limiting surface and the surface of the mounting area.

5. The short circuit protection plug for the transfer of a detonator according to claim 1, wherein The guiding assembly includes a guide post, and a mounting part is provided at the bottom of the guide post. The diameter of the mounting part is larger than the diameter of the guide post, so that a stepped surface is formed between the mounting part and the guide post. The guide hole in the mounting area is provided with a fixing surface, and the fixing surface is connected to the stepped surface. The height of the fixing post located in the mounting area is greater than the height of the shorting probe located in the mounting area.

6. The short circuit protection plug for the transfer of a detonator according to claim 1, wherein The connecting part includes a fixing seat, which is disposed on the housing. The fixing seat extends downward and bends to form a pressing part. A connecting plate is disposed on the pressing part. A clamping part is disposed on the free end of the connecting plate. A slot matching the socket is disposed on the clamping part. By pressing the pressing part, deformation occurs, causing the clamping part on the connecting plate to be clamped onto the socket.

7. The short circuit protection plug for the transfer of a detonator according to claim 5, wherein The conductive assembly includes a conductive base and a conductive body. The conductive base is disposed at the bottom of the shorting probe and the guide assembly. The conductive body is sequentially connected to the conductive base located at the bottom of the shorting probe and the guide assembly, so that the connecting part, the shorting probe and the guide assembly form a conductive line.

8. The short circuit protection plug for the transfer of a detonator according to claim 1, wherein The bottom of the housing is provided with a mounting groove, the conductive component is disposed in the mounting groove, and the mounting groove is filled with potting material. The potting material is used to fix the position of the conductive component and the shorting probe and guide component connected to the conductive component.

9. The short circuit protection plug for the transfer of a detonator according to claim 5, wherein The connecting part is connected to the fixing plate. A connecting port is provided on one side of the housing. The connecting port communicates with the guide hole. The fixing plate passes through the connecting port and is installed on the guide hole. The fixing plate is provided with a connecting hole that matches the guide post. The guide post is installed on the guide hole and presses the fixing plate tightly on the fixing surface.

10. The short circuit protection plug for the transfer of a detonator according to claim 7, wherein The conductive base is provided with a fixed slot that matches the conductor, and the conductor is sequentially engaged in the fixed slot of each conductive base to form a U-shaped conductor.

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