Missile launch prevention from shorted electrical connectors

Abstract

The utility model relates to a kind of from short-circuit electric connector of false launch prevention, differential jack is equipped on the plug head shell body plug pin insulator, outer periphery is equipped with circumferentially distributed rigid plug pin, rigid plug pin front end drum type structure and short-circuit ring plate, compression spring constitute self short-circuit mechanism;Head shell is equipped with different width plug key slot, and false insertion and accurate guidance are realized with cooperation guide column;Connecting cap is locked by screwing clamp head and socket spiral clamping groove, and it is matched with elastic buffer component vibration resistance;Differential jack and rigid plug pin are physically isolated, supplemented with multiple insulation structure.The utility model separates automatically short-circuit power supply, false launch prevention of initiating explosive device control circuit, after insertion, stable transmission signal and electric power, with false insertion prevention, anti-interference, the advantage of convenient maintenance, adapt to the harsh working condition of weapon system.

Description

Technical Field

[0001] This utility model relates to an electrical connector, specifically an electrical connector that prevents accidental emission and self-short circuit. Background Technology

[0002] Existing weapon system electrical connectors lack reliable self-short-circuit protection mechanisms. In the disconnected state, the power supply and pyrotechnic control circuits are mostly open circuits, which can easily lead to accidental firing due to stray current, induced voltage, or accidental contact. Moreover, the anti-misinsertion design mostly adopts equal-width keyways or single-key structures, which lack precise guidance, resulting in a high risk of misinsertion and easily causing problems such as circuit burnout and signal disorder.

[0003] Meanwhile, the existing design does not effectively physically isolate the signal channel from the power channel, resulting in weak anti-interference capability of differential transmission and easy crosstalk distortion of control signals; the locking structure lacks elastic buffering and has insufficient resistance to vibration and shock; the pins are mostly integrated designs, making assembly and maintenance inconvenient, and the insulation protection is incomplete, making it easy for insulation failure to occur due to wear and vibration. It is difficult to adapt to the complex and harsh working conditions of weapon systems and cannot meet the requirements of high safety and high reliability. Summary of the Invention

[0004] This utility model provides an electrical connector with a simple and compact structure that can comprehensively meet the requirements of preventing mis-insertion and transmission, and also has self-short-circuit safety protection, thereby improving the safety, stability and reliability of signal transmission.

[0005] The technical solution adopted by this utility model is: a short-circuit-proof electrical connector, including a socket and a plug, characterized in that: one or more differential external sockets are passed through the pin insulator inside the plug head housing; multiple differential internal sockets are passed through the differential socket insulator inside the differential external sockets; multiple rigid pins are arranged around the outer periphery of the differential external sockets; some of the rigid pins are arranged in a circumferential circle around the outermost periphery; these rigid pins are power pins and / or grounding system signal pins and / or short-circuit protection signal pins and / or pyrotechnic control system signal pins; the front end of the circumferentially distributed rigid pins has a drum-shaped structure; the outer end of the drum-shaped structure... The expansion part is connected to a short-circuit ring plate. The inner end of the short-circuit ring plate abuts against the front end of the pin insulator via a compression spring. The outer end of the short-circuit ring plate is limited and abuts against the rearward limiting step inside the head housing. A pin insulator tube is sleeved on the rigid pin within the axial range of the corresponding compression spring. One or more guide posts are also connected to the pin insulator, and the guide posts are guided and connected to the short-circuit ring plate. Two or more axial insertion keyways are arranged around the outer circumference of the head housing, and at least one insertion keyway has a wider groove than the other insertion keyways. Two or more insertion keys corresponding to the insertion keyways are arranged around the inner wall of the socket housing. The hole insulator inside the socket housing has guide post holes corresponding to the guide posts.

[0006] The rear end of the pin insulator is press-fitted with a pin insulator cover plate. The rigid pin is divided into a front pin section and a rear pin section. The rear pin section passes through the pin insulator and the pin insulator cover plate and does not extend beyond the front end of the pin insulator. The front pin section extends into the rear end of the pin and is welded together. The front end of the front pin section is set as a drum-shaped structure. The front end of the front pin section is sleeved with a pin insulating tube on its outer periphery within the axial range of the corresponding compression spring.

[0007] The head housing is provided with a connecting cap. The rear end of the connecting cap is limited by the cap retaining ring, and then abuts against the rear end of the outer flange of the head housing via the anti-jump ring, the corrugated ring, and the cap gasket. The inner wall of the front end of the connecting cap is provided with three screw-on clamps. The outer wall of the front end of the seat housing is provided with three spiral clamping grooves. The three screw-on clamps correspond to the three spiral clamping grooves respectively.

[0008] The three screw-on clips are staggered from the positions of two or more keyways.

[0009] A cable guard is screwed onto the rear end of the head housing, and a tail cap is screwed onto the rear end of the cable guard.

[0010] Multiple rigid sockets corresponding to rigid pins and one or more socket differential external sockets corresponding to plug differential external sockets are passed through the socket differential insulator. Multiple socket differential internal sockets corresponding to plug differential internal sockets are passed through the socket differential hole insulator.

[0011] The beneficial effects of this utility model are: 1. The rigid pin front end drum structure, short-circuit ring plate, and compression spring form a linkage mechanism. When the connector is separated, the compression spring pushes the short-circuit ring plate against the limiting step of the connector housing, causing the circumferentially distributed power, ground, and pyrotechnic control rigid pins to form an electrical short circuit. This electrically blocks stray currents and the risk of unauthorized transmission caused by accidental power supply, thus achieving safety assurance against accidental transmission. When the connector is inserted, the axial force compresses the compression spring, and the short-circuit ring plate retracts to release the short circuit, ensuring normal signal and power transmission. Furthermore, the pin insulation tube limits the range of action of the compression spring, avoiding unexpected short circuits and further improving safety and reliability.

[0012] 2. The intermediate differential connection socket pins and the outer rigid pins are physically isolated to form independent differential signal channels and power safety signal channels. Combined with the double-layer structure of the differential socket outer hole sleeve inner hole, the electromagnetic interference resistance is greatly improved, ensuring the distortion-free transmission of key data such as weapon control commands and status monitoring, and adapting to the strong electromagnetic working environment of weapon systems.

[0013] 3. The outer periphery of the head housing has two or more keyways for insertion, and at least one keyway has a different width from the others. These keyways, when paired with the corresponding keyways of the socket, form a unique matching structure, completely avoiding circuit damage or false triggering caused by incorrect insertion. The guide posts on the pin insulator precisely match the guide post holes of the socket, guiding the plug and socket to coaxially align. This ensures that the rigid pins, differential sockets, and corresponding interfaces are precisely aligned, solving the problem of poor contact during insertion and improving the reliability of installation and use.

[0014] 4. The three screw-on locking heads of the connector cap screw into the spiral locking groove of the socket, working in conjunction with the anti-jump ring, corrugated ring, and elastic buffer of the cap gasket to effectively offset the effects of complex operating conditions such as weapon firing impacts and ship navigation vibrations, preventing loosening of the connection. The screw-on locking heads and the keyway are staggered to avoid interference during insertion, ensuring that the locking and anti-misinsertion functions are effective independently. Meanwhile, the cable sleeve and tail cap securely protect the cable, and the pin insulator cover plate stabilizes the rear section of the rigid pin, reducing the risk of solder joint detachment due to cable pulling, extending product lifespan, and lowering maintenance costs.

[0015] 5. The pin insulating tube, pin insulator, and differential hole insulator form multiple insulation barriers, clearly separating different types of rigid pins, avoiding unexpected conduction between rigid pins and short-circuit rings and compression springs, greatly reducing the risk of electrical faults and ensuring stable system operation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the plug structure of this utility model; Figure 2 for Figure 1 Internal structure diagram; Figure 3 for Figure 2 A plan view; Figure 4 This is a schematic diagram of the internal structure of the socket of this utility model; In the diagram: 1. Head housing; 2. Connecting cap; 3. Screw-on connector; 4. Cap retaining ring; 5. Anti-jump ring; 6. Corrugated ring; 7. Cap washer; 8. Plug keyway; 9. Limiting step; 10. Pin insulator; 11. Pin insulator cover plate; 12. Plug differential external socket; 13. Plug differential hole insulator; 14. Plug differential internal socket; 15. Rigid pin rear section; 16. Rigid pin front section; 17. Drum-shaped head; 18. Pin insulating tube; 19. Guide post; 20. Short-circuit ring plate; 21. Cable sleeve; 22. Tail cap; 23. Seat housing; 24. Spiral locking groove; 25. Plug key; 26. Hole insulator; 27. Socket differential external socket; 28. Socket differential hole insulator; 29. ​​Socket differential internal socket; 30. Rigid socket; 31. Guide post hole; 32. Compression spring. Detailed Implementation

[0017] The following description, in conjunction with the accompanying drawings and embodiments, provides further details.

[0018] Figure 1-4 As shown: A short-circuit-protected connector for preventing accidental emission, including a socket and a plug, such as... Figure 1 , 2 The plug of type 3 includes: 1. Head housing; 2. Connecting cap; 3. Screw-on connector; 4. Cap retaining ring; 5. Anti-jump ring; 6. Corrugated ring; 7. Cap washer; 8. Connecting keyway; 9. Limiting step; 10. Pin insulator; 11. Pin insulator cover plate; 12. Plug differential external socket; 13. Plug differential hole insulator; 14. Plug differential internal socket; 15. Rigid pin rear section; 16. Rigid pin front section; 17. Drum-shaped head; 18. Pin insulating tube; 19. Guide post; 20. Short-circuit ring plate; 21. Cable sleeve; 22. Tail cap. The head housing 1 is externally equipped with a connecting cap 2. The rear end of the connecting cap 2 is limited by a cap retaining ring 4, and abuts against the rear end of the outer flange of the head housing 1 via an anti-jump ring 5, a corrugated ring 6, and a cap gasket 7. Three screw-on clamps 3 are provided on the inner wall of the front end of the connecting cap 2. Two or more axial insertion keyways 8 are provided around the outer circumference of the head housing 1, with at least one insertion keyway 8 having a wider groove than the others. The head housing 1 is internally equipped with a pin insulator 10 and a pin insulator cover plate 11. One or more plug differential external sockets 12 are threaded through the pin insulator 10. Multiple plug differential internal sockets 14 are threaded through the plug differential socket insulator 13 inside the plug differential external socket 12. Multiple rigid pins are provided around the outer circumference of the plug differential external socket 12, with some of the rigid pins arranged in a circular pattern on the outermost circumference. The pins are power supply pins and / or grounding system signal pins and / or short circuit protection signal pins and / or pyrotechnic control system signal pins. The rigid pins are divided into a rigid pin front section 16 and a rigid pin rear section 15. The front end of the rigid pin front section 16 is a drum-shaped head 17. The outer part of the drum-shaped head 17 is connected to a short-circuit ring plate 20. The inner end of the short-circuit ring plate 20 abuts against the front end of the pin insulator 10 via a compression spring 32. The outer end of the short-circuit ring plate 20 is limited and abuts against the rearward limiting step 9 inside the head housing 1. A pin insulating tube 18 is sleeved on the rigid pin within the axial range of the corresponding compression spring. The rigid pin rear section 15 passes through the pin insulator 10 and the pin insulator cover plate 11 and does not extend beyond the front end of the pin insulator 10. The rigid pin front section 16 extends into the rigid pin rear section 15 and is welded together. One or more guide posts 19 are also connected to the pin insulator 10, and the guide posts 19 are guided to pass through the short-circuit ring plate 20.

[0019] like Figure 4The socket includes a housing 23, a spiral locking groove 24, a key 25, a hole insulator 26, a differential external socket 27, a differential hole insulator 28, a differential internal socket 29, and a rigid socket 30. The inner wall of the housing 23 has two or more keys 25 corresponding to the keyway 8. The hole insulator 26 inside the housing 23 has guide post holes 31 corresponding to guide posts 19. The outer wall of the front end of the housing 23 has three spiral locking grooves 24, and three screw-on locking heads 3 correspond to the three spiral locking grooves 24. Multiple rigid sockets 30 corresponding to rigid pins and one or more differential external sockets 27 corresponding to the differential external socket 12 pass through the hole insulator 26. Multiple differential internal sockets 29 corresponding to the differential internal socket 14 pass through the differential external socket 27 via the differential hole insulator 28.

[0020] In this embodiment, the three screw-on connectors 3 are staggered from the two or more keyways 8. A cable guard 21 is screwed onto the rear end of the head housing 1, and a tail cap 22 is screwed onto the rear end of the cable guard 21.

Claims

1. A short-circuit-protected connector for preventing accidental emission, comprising a socket and a plug, characterized in that: One or more differential external sockets are connected to the pin insulator inside the plug housing. Multiple differential internal sockets are connected through the differential socket insulator inside the differential external sockets. Multiple rigid pins are arranged around the outer periphery of the differential external sockets. Some of these rigid pins are arranged in a circumferential ring. These rigid pins are power pins and / or grounding system signal pins and / or short-circuit protection signal pins and / or pyrotechnic control system signal pins. The front end of the circumferentially distributed rigid pins has a drum-shaped structure. The outer expansion portion of the drum-shaped structure is connected to a short-circuit ring plate. The inner end of the short-circuit ring plate is pressurized... A spring abuts against the front end of the pin insulator, and the outer end of the short-circuit ring plate abuts against the rearward limiting step inside the head housing. A pin insulator tube is sleeved on the rigid pin within the axial range of the corresponding compression spring. One or more guide posts are also passed through the pin insulator, and the guide posts are guided through the short-circuit ring plate. Two or more axial insertion keyways are arranged around the outer circumference of the head housing, and at least one insertion keyway has a wider groove than the other insertion keyways. Two or more insertion keys corresponding to the insertion keyways are arranged around the inner wall of the socket housing. The hole insulator inside the socket housing has guide post holes corresponding to the guide posts.

2. The anti-misfire self-short-circuit electrical connector according to claim 1, characterized in that: The rear end of the pin insulator is press-fitted with a pin insulator cover plate. The rigid pin is divided into a front pin section and a rear pin section. The rear pin section passes through the pin insulator and the pin insulator cover plate and does not extend beyond the front end of the pin insulator. The front pin section extends into the rear end of the pin and is welded together. The front end of the front pin section is set as a drum-shaped structure. The front end of the front pin section is sleeved with a pin insulating tube on its outer periphery within the axial range of the corresponding compression spring.

3. The anti-misfire self-short-circuit electrical connector according to claim 1, characterized in that: The head housing is provided with a connecting cap. The rear end of the connecting cap is limited by the cap retaining ring, and then abuts against the rear end of the outer flange of the head housing via the anti-jump ring, the corrugated ring, and the cap gasket. The inner wall of the front end of the connecting cap is provided with three screw-on clamps. The outer wall of the front end of the seat housing is provided with three spiral clamping grooves. The three screw-on clamps correspond to the three spiral clamping grooves respectively.

4. The self-short-circuit electrical connector for preventing accidental emission according to claim 3, characterized in that: The three screw-on clips are staggered from the positions of two or more keyways.

5. The self-short-circuit electrical connector for preventing accidental emission according to claim 1, characterized in that: A cable guard is screwed onto the rear end of the head housing, and a tail cap is screwed onto the rear end of the cable guard.

6. The anti-misfire self-short-circuit electrical connector according to claim 1, characterized in that: Multiple rigid sockets corresponding to rigid pins and one or more socket differential external sockets corresponding to plug differential external sockets are passed through the socket differential insulator. Multiple socket differential internal sockets corresponding to plug differential internal sockets are passed through the socket differential hole insulator.

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