A kind of anti-probing pressure impact-resistant electric connector for underwater sonar

Abstract

The utility model relates to a kind of anti-probing pressure-resistant impact-resistant electric connectors for underwater sonar, middle insulating plate in integrated glass sintering socket in seat shell, multiple high-voltage drive signal pins and more than one socket power supply shielding sleeve are connected on the front, middle and rear insulating plate of socket, power pin assembly is connected on the insulator in socket power supply sleeve, middle insulating plate in integrated glass sintering plug in head shell, multiple high-voltage drive signal holes corresponding to high-voltage drive signal pin and more than one plug power supply shielding sleeve are connected on the front, middle and rear insulating plate of plug connection insulating seat, power hole assembly corresponding to power pin is connected on the insulator in plug power supply sleeve, plug tail pipe is connected in the rear end of head shell by screw, plug tail pipe is connected in positioning sleeve by screw, plug rear insulating plate is positioned and abutting or connected or pulled in the front end of positioning sleeve. Its structure is compact, connection, sealing structure is stable, firm, effectively consider power supply and signal transmission shielding.

Description

Technical Field

[0001] This utility model relates to electrical connectors, specifically an underwater sonar-compatible, pressure-resistant, and shock-resistant electrical connector. Background Technology

[0002] Underwater sonar systems place extremely stringent requirements on the detection resistance, pressure resistance, shock resistance, and watertightness of electrical connectors. However, existing electrical connectors for underwater sonar suffer from several technical defects: First, the insulating plates often employ single mechanical fixing or simple adhesive bonding, lacking an integrated reinforcement structure. Under the high pressure and impact conditions of the deep sea, they are prone to loosening and cracking, resulting in insufficient pressure and shock resistance, and an inability to withstand the mechanical stresses of complex marine operations. Second, the power supply and signal transmission components lack effective shielding and isolation structures, leading to significant electromagnetic leakage, making them easily detectable by the enemy. Furthermore, signal transmission is susceptible to power supply interference, affecting sonar detection accuracy. Third, the sealing structure design is simplistic. Many of these systems rely on single-ring seals or simple potting, which can easily cause cracks at the metal-to-non-metal bonding edges under long-term deep-sea immersion and pressure, leading to seal failure, seawater leakage, and shortened product lifespan. Fourth, the positioning accuracy of the plug-in parts is insufficient, the components are loosely assembled, and the fit between the shielding sleeve and the insulator lacks effective sealing and positioning design, further reducing signal transmission stability and overall structural reliability. Fifth, the power supply shielding sleeve is mostly an integral structure, with poor sealing performance with the insulator and shell, making it impossible to balance shielding effect and watertight performance, and failing to meet the stringent usage requirements of underwater sonar systems in deep-sea pressure, strong impact, and anti-detection environments. Summary of the Invention

[0003] This utility model provides an underwater sonar anti-detection, pressure-resistant, and shock-resistant electrical connector with a compact structure, stable and robust connection and sealing structure, and effective shielding for both power supply and signal transmission.

[0004] The technical solution adopted in this utility model is: an underwater sonar anti-detection, pressure-resistant, and shock-resistant electrical connector, including a plug and a socket, with the front end of the socket connected to the front end of the plug. The socket housing contains an integral glass-sintered socket middle insulating plate; the front and rear ends of the socket middle insulating plate are respectively glued or potted to the front and rear insulating plates of the socket; multiple high-voltage drive signal pins and one or more socket power shielding sleeves are threaded through the front, middle, and rear insulating plates of the socket; power pin assemblies are threaded through the insulator inside the socket power shielding sleeve; the plug head housing is connected to a locking sleeve at the front end of the connector housing; the head housing contains an integral glass-sintered plug middle insulating plate; the plug... The front end of the intermediate insulating plate is glued or potted to the front insulating plate of the plug and the plug-in insulating seat in sequence. The rear end of the intermediate insulating plate of the plug is glued or potted to the rear insulating plate of the plug. Multiple high-voltage drive signal holes corresponding to high-voltage drive signal pins are passed through the plug-in insulating seat, the front, middle and rear insulating plates of the plug, and one or more plug power shielding sleeves are passed through. The front end of the plug power shielding sleeve is provided with a recessed platform for the plug socket power shielding sleeve. The power hole assembly corresponding to the power pin is passed through the insulator of the plug power shielding sleeve inside the plug power shielding sleeve. The rear end of the head shell is spirally connected to the plug tail tube. The plug tail tube is spirally connected to the positioning sleeve. The front end of the positioning sleeve is positioned and pressed against or connected to or pulled to the rear insulating plate of the plug.

[0005] Furthermore, multiple sealing rings are provided between the outer wall of the plug-in insulating base and the head housing.

[0006] Furthermore, the front end of the plug-in insulating base is limited within the head housing by a retaining ring.

[0007] Furthermore, the plug power shielding sleeve includes a front plug power shielding sleeve and a rear plug power shielding sleeve. The rear plug power shielding sleeve passes through the front, middle, and rear insulating plates of the plug. The front plug power shielding sleeve is disposed inside the insertion insulating base and has a sleeved overlap section with the rear plug power shielding sleeve at the rear end. A positioning step is provided around the rear outer periphery of the front plug power shielding sleeve. The positioning step is abutted and limited by the rearward limiting step of the inner wall of the insertion insulating base. An outer sealing ring that mates with the inner wall of the insertion insulating base is provided on the middle outer wall of the front plug power shielding sleeve. An inner sealing ring that mates with the outer wall of the inner insulating base of the plug power shielding sleeve is provided on the middle inner wall of the front plug power shielding sleeve.

[0008] Furthermore, the insulator inside the plug power sleeve has a front and rear split structure. The rear split part is positioned and potted inside the plug power sleeve, the front split part is inserted into the front end of the rear split part, and the inner sealing ring corresponds to the outer wall of the front split part.

[0009] Furthermore, the power shield of the socket is fitted with a power tail tube via a shrink sleeve at its rear end.

[0010] Furthermore, the rear end of the plug power shield sleeve is fitted with a plug power tail tube via a shrink sleeve.

[0011] Furthermore, a radial sealing ring that mates with the inner wall of the seat housing is provided on the outer wall of the head housing within the range of the locking sleeve, and a sealing ring that mates with the head housing is provided on the front end face of the seat housing.

[0012] Furthermore, the insulator inside the socket power supply sleeve is divided into a three-part structure corresponding to the front, middle, and rear insulating plates of the socket.

[0013] This connector significantly enhances overall mechanical strength and impact resistance through the use of integrally sintered glass insulating plates within both the housing and head housing, along with the fixing of the front and rear insulating plates and the spiral locking structure of the head housing's rear positioning sleeve and the plug's tail tube. The glass sintering process also ensures pressure resistance and airtightness in deep-sea environments. An independently designed power shield, a front and rear split structure, and overlapping sleeve sections isolate the power pin assembly from the high-voltage drive signal pin, effectively reducing electromagnetic leakage and signal interference, and achieving anti-detection functionality. A multi-layered sealing system is formed by the radial sealing ring, end-face sealing ring, inner and outer sealing rings of the power shield, and multiple sealing rings of the insertion insulating base, completely blocking seawater intrusion. The recessed design of the plug's power shield and the retaining ring of the insertion insulating base ensure precise insertion and removal positioning. The front and rear split power shield's internal insulation and potting process further enhance sealing reliability and signal transmission stability. Ultimately, this connector offers a comprehensive advantage in underwater sonar applications, combining anti-detection, high pressure resistance, strong impact resistance, watertight reliability, and stable signal transmission. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the socket of this utility model; Figure 2 This is a three-dimensional structural diagram of the plug of this utility model; Figure 3 for Figure 2 Enlarged view of the front structure of the plug.

[0015] In the diagram: 1. Seat housing; 2. Socket end face sealing ring; 3. Socket front insulating plate; 4. Socket middle insulating plate; 5. Socket rear insulating plate; 6. High-voltage drive signal pin; 7. Socket power shielding sleeve; 8. Socket power sleeve inner insulator; 9. Socket power tail tube; 10. Head housing; 11. Locking sleeve; 12. Socket radial sealing ring; 13. Plug tail tube; 14. Positioning sleeve; 15. Socket insulating seat; 16. Plug front insulating plate; 17. Plug middle insulating plate; 18. Plug rear insulating plate; 19. High-voltage drive signal hole; 20. Rear plug power shielding sleeve; 21. Plug power tail tube; 22. Front plug power shielding sleeve; 23. Positioning step; 24. Outer sealing ring; 25. Inner sealing ring; 26. Plug power sleeve inner front insulator; 27. Plug power sleeve inner rear insulator; 28. Sealing ring; 29. ​​Retaining ring; 30. Power pin assembly; 31. Power hole assembly; 32. Detailed Implementation

[0016] The following description, in conjunction with the accompanying drawings and embodiments, provides further details.

[0017] Figure 1-3 As shown: A detection-resistant, pressure-resistant, and shock-resistant electrical connector for underwater sonar, including a plug and a socket.

[0018] like Figure 1 The socket includes a housing 1, a plug-in end face sealing ring 2, a front insulating plate 3, a middle insulating plate 4, a rear insulating plate 5, a high-voltage drive signal pin 6, a power shield 7, an inner insulator 8, a shrink sleeve 9, and a power tail tube 10. The middle insulating plate 4 is integrally glass-sintered inside the housing 1. The front and rear ends of the middle insulating plate 4 are glued or potted to the front insulating plate 3 and the rear insulating plate 5, respectively. Multiple high-voltage drive signal pins 6 and one or more power shield 7 are threaded through the front insulating plate 3, the middle insulating plate 4, and the rear insulating plate 5. The power pin assembly 31 is threaded through the inner insulator 8 inside the power shield 7.

[0019] like Figure 2 , 3The plug includes a head housing 11, a locking sleeve 12, a radial sealing ring 13, a plug tail tube 14, a positioning sleeve 15, a plug insulating seat 16, a front insulating plate 17, a middle insulating plate 18, a rear insulating plate 19, a high-voltage drive signal hole 20, a rear plug power shielding sleeve 21, a plug power tail tube 22, a front plug power shielding sleeve 23, a positioning step 24, an outer sealing ring 25, an inner sealing ring 26, a front insulator inside the plug power sleeve 27, a rear insulator inside the plug power sleeve 28, a sealing ring 29, a retaining ring 30, a power pin assembly 31, and a power hole assembly 32. The head housing 11 has a locking sleeve 12 at the front end of the external connector housing. Inside the head housing 11, there is an integral glass sintered plug insulating plate 18. The front end of the plug insulating plate 18 is sequentially glued or potted with a front plug insulating plate 17 and a plug insulating seat 16. The rear end of the plug insulating plate 18 is glued or potted with a rear plug insulating plate 19. Multiple high-voltage drive signal holes 20, corresponding to high-voltage drive signal pins 6, are passed through the plug insulating seat 16, the front plug insulating plate 17, the middle plug insulating plate 18, and the rear plug insulating plate 19. One or more plug power shielding sleeves are also passed through these sleeves. The plug power shielding sleeves include a front plug power shielding sleeve 23 and a rear plug power shielding sleeve 21. The rear plug power shield 21 passes through the front insulating plate 17, the middle insulating plate 18, and the rear insulating plate 19 of the plug. The front plug power shield 23 is disposed inside the insertion insulating base 16 and has a sleeved overlap section with the rear plug power shield 21 at the rear end. A positioning step 24 is provided on the outer periphery of the rear of the front plug power shield 23. The positioning step 24 is abutted and limited by the rearward limiting step of the inner wall of the insertion insulating base 16. An outer sealing ring 25 that mates with the inner wall of the insertion insulating base 16 is provided on the outer wall of the middle part of the front plug power shield 23. An inner sealing ring 26 that mates with the outer wall of the inner insulator of the plug power sleeve is provided on the inner wall of the middle part of the front plug power shield 23. The inner insulator of the plug power sleeve has a front and rear split structure. The rear split part, namely the rear insulator 28 inside the plug power sleeve, is positioned and potted inside the plug power sleeve. The front split part, namely the front insulator 27 inside the plug power sleeve, corresponds to the front end of the insertion rear split part. The inner sealing ring 26 corresponds to the outer wall of the front split part. The front plug power shield 23 has a recessed platform for the plug socket power shield 7 inside. The power hole assembly 32 corresponding to the power pin is passed through the insulator inside the plug power shield 23. The plug tail tube 14 is spirally connected inside the rear end of the head housing 11. The positioning sleeve 15 is spirally connected inside the plug tail tube 14. The front end of the positioning sleeve 15 is positioned and pressed against or connected to or pulled to the rear insulating plate 19 of the plug.

[0020] In this embodiment, multiple sealing rings 29 are provided between the outer wall of the plug-in insulating base 16 and the head housing 11.

[0021] In this embodiment, the front end of the plug-in insulating base 16 is limited within the head housing 11 by the retaining ring 30.

[0022] In this embodiment, the power supply shielding sleeve 7 of the socket is connected to the power supply tail tube 10 via a shrink sleeve 9 at its rear end.

[0023] In this embodiment, the rear end of the power shield sleeve 21 of the rear plug is connected to the power tail tube 22 of the plug via the shrink sleeve 9.

[0024] In this embodiment, a radial sealing ring 13 that mates with the inner wall of the seat housing 1 is provided on the outer wall of the head housing 11 within the range of the locking sleeve 12, and a sealing ring 2 that mates with the head housing 1 is provided on the front end face of the seat housing 1.

[0025] Based on this embodiment, the insulator 8 inside the socket power supply sleeve can also be divided into a three-section split combination structure corresponding to the front, middle and rear insulating plates of the socket.

Claims

1. A detection-resistant, pressure-resistant, and shock-resistant electrical connector for underwater sonar, comprising a plug and a socket, wherein the front end of the socket is inserted into the front end of the plug, characterized in that: The socket housing has an integral glass-sintered socket middle insulating plate inside. The front and rear ends of the socket middle insulating plate are respectively glued or potted to the front and rear insulating plates of the socket. Multiple high-voltage drive signal pins and one or more socket power shielding sleeves are passed through the front, middle, and rear insulating plates of the socket. Power pin assemblies are passed through the insulator inside the socket power shielding sleeve. The plug head housing is connected to the locking sleeve at the front end of the connector housing. The head housing has an integral glass-sintered plug middle insulating plate inside. The front end of the plug middle insulating plate is sequentially glued or potted to the plug front insulating plate and the connector insulating base. The plug's middle insulating plate is glued or potted at the rear end. Multiple high-voltage drive signal holes corresponding to high-voltage drive signal pins are passed through the plug-in insulating base, the front, middle, and rear insulating plates of the plug, and one or more plug power shielding sleeves are passed through. The front end of the plug power shielding sleeve is provided with a recessed platform for the plug socket power shielding sleeve. The power hole assembly corresponding to the power pin is passed through the plug power shielding sleeve's inner insulator. The plug tail tube is spirally connected to the rear end of the head housing. The positioning sleeve is spirally connected to the plug tail tube. The front end of the positioning sleeve is positioned, pressed against, connected to, or pulled to the plug's rear insulating plate.

2. The underwater sonar anti-detection, pressure-resistant, and shock-resistant electrical connector according to claim 1, characterized in that: Multiple sealing rings are provided between the outer wall of the plug-in insulating base and the head shell.

3. The underwater sonar anti-detection, pressure-resistant, and shock-resistant electrical connector according to claim 1, characterized in that: The front end of the plug-in insulating base is limited within the head housing by a retaining ring.

4. The underwater sonar anti-detection, pressure-resistant, and shock-resistant electrical connector according to claim 1, characterized in that: The plug power shield includes a front plug power shield and a rear plug power shield. The rear plug power shield passes through the front, middle, and rear insulating plates of the plug. The front plug power shield is disposed inside the insertion insulating base and has a sleeved overlap section with the rear plug power shield at the rear end. A positioning step is provided around the rear outer periphery of the front plug power shield. The positioning step is abutted and limited by the rearward limiting step of the inner wall of the insertion insulating base. An outer sealing ring that mates with the inner wall of the insertion insulating base is provided on the middle outer wall of the front plug power shield. An inner sealing ring that mates with the outer wall of the inner insulating base is provided on the middle inner wall of the front plug power shield.

5. The underwater sonar anti-detection, pressure-resistant, and shock-resistant electrical connector according to claim 4, characterized in that: The insulator inside the plug power sleeve has a front and rear split structure. The rear split part is positioned and potted inside the plug power sleeve, and the front split part is inserted into the front end of the rear split part. The inner sealing ring corresponds to the outer wall of the front split part.

6. The underwater sonar anti-detection, pressure-resistant, and shock-resistant electrical connector according to claim 1, characterized in that: The power shield of the socket is connected to the power tail tube via a shrink sleeve at the rear end.

7. A detection-resistant, pressure-resistant, and shock-resistant electrical connector for underwater sonar according to claim 1 or 4, characterized in that: The rear end of the plug power shield sleeve is connected to the plug power tail tube via a shrink sleeve.

8. The underwater sonar anti-detection, pressure-resistant, and shock-resistant electrical connector according to claim 1, characterized in that: The outer wall of the head housing within the corresponding locking sleeve range is provided with an insertion radial sealing ring that mates with the inner wall of the seat housing, and the front end face of the seat housing is provided with an insertion end face sealing ring that mates with the head housing.

9. The underwater sonar anti-detection, pressure-resistant, and shock-resistant electrical connector according to claim 1, characterized in that: The insulator inside the socket power supply sleeve is divided into a three-part structure corresponding to the front, middle, and rear insulating plates of the socket.

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