Watertight electric connector

Abstract

The utility model relates to a watertight electric connector, which is characterized in that the periphery of a socket shell insertion section of a socket is provided with an external screwing thread, the periphery of a head shell insertion section of a plug is provided with a plurality of sealing grooves with built-in sealing rings, and the inner wall of a locking cap insertion section of the plug is provided with an internal screwing thread corresponding to the external screwing thread; a pin insulation assembly connected in the seat shell in a penetrating manner comprises a pin front insulation plate, a pin rear insulation plate, a middle sintering plate and a plurality of pin assemblies, the pin assemblies are integrally sintered in the seat shell through the middle sintering plate formed by sintering glass, and the pin front insulation plate and the pin rear insulation plate are arranged in front of and behind the middle sintering plate respectively; a head shell jack assembly of the plug is integrally sintered in a head shell through a jack insulation sintering plate formed by sintering glass, the front end of the jack insulation sintering plate abuts against a front limiting step in the head shell, and the rear end of the jack insulation sintering plate is clamped in the head shell through a clamping ring to be limited. The sealing device is simple in structure, convenient to machine and capable of meeting ultra-deep water sealing performance and preventing deformation and damage.

Description

Technical Field

[0001] This utility model relates to the field of connectors, specifically a watertight electrical connector. Background Technology

[0002] In existing connector applications, there are underwater or other situations requiring high waterproof performance, which necessitates connectors with excellent waterproof and sealing properties. Traditional electrical connectors typically incorporate sealing rings at the mating crimp face and the mating circumference of the head housing to improve sealing performance. However, in deep-sea underwater applications, the entire connector is subjected to pressure, which can easily cause deformation of internal insulating components, sockets, pins, and sealing rings, thereby affecting sealing performance. Summary of the Invention

[0003] This invention provides a watertight electrical connector that is simple in structure, easy to process, and can meet the requirements of ultra-deep underwater sealing and prevention of deformation damage.

[0004] The technical solution adopted by this utility model is: a watertight electrical connector, including a plug and a socket, characterized in that: the outer periphery of the socket's housing mating section is provided with an external screw thread; the outer periphery of the plug's head housing mating section is provided with multiple sealing grooves with built-in sealing rings; the inner wall of the plug's locking cap mating section is provided with an internal screw thread corresponding to the external screw thread; the pin insulation assembly passing through the socket's housing includes front and rear insulating plates, an intermediate sintered plate, and multiple pin assemblies, the pin assemblies being integrally formed by glass sintering of the intermediate sintered plate. The sintered plate is installed in the housing, with front and rear insulating plates for the pins respectively. The socket insulating assembly that passes through the head housing of the plug includes a socket insulating sintered plate and multiple socket assemblies. The socket assembly is integrally sintered in the head housing by the socket insulating sintered plate formed by glass sintering. The front end of the socket insulating sintered plate abuts against the front limiting step in the head housing. The rear end of the socket insulating sintered plate is clamped in the head housing by a retaining ring or pressed towards the head housing by the plug tail or pressed towards the head housing by the inner limiting sleeve attached to the plug tail.

[0005] The front and rear insulating plates of the pin are interference-fitted with the inner wall of the housing.

[0006] An insulating sealing ring that is interference-fitted with the inner wall of the housing is embedded around the outer periphery of the front and rear insulating plates of the pin.

[0007] The front and rear insulating plates of the pin are PE insulating plates.

[0008] The socket assembly is sintered on a section of the socket insulating sintered plate, with multiple sintered flanges having a diameter larger than that of the socket assembly.

[0009] A connecting flange is provided on the outer periphery of the rear end of the socket housing, and mounting holes are provided on the connecting flange.

[0010] A flat sealing ring is installed in the groove on the side of the connecting flange facing away from the socket mating end.

[0011] The housing has a circumferential sealing ring on the outer periphery of the side of the connecting flange facing away from the socket insertion end.

[0012] The socket housing has an end face sealing groove on the step of the mating end face corresponding to the mating end face of the head housing, and the end face sealing groove has an end face sealing ring inside.

[0013] The socket housing has a ring of multiple axial guide grooves on the inner wall of the mating end, and the plug housing has a ring of multiple axial guide key structures on the outer periphery of the mating end, with the guide key structures corresponding to the guide grooves.

[0014] The beneficial effects of this utility model are as follows: The socket has an intermediate sintered plate, formed by the integrated glass sintering of the pin assembly, located between the front and rear insulating plates of the traditional pin assembly. This improves the overall water pressure resistance of the socket and meets the requirements for underwater pressure-bearing safety sealing. The plug directly uses a glass-sintered socket assembly with an insulating sintered plate, which improves the plug's water pressure resistance and sealing performance. Combined with the sealing ring screwed into the connector head housing and the seat housing, the elastic outer expansion of the seat housing ensures a stable and secure screw connection, while the sealing ring provides good sealing performance under radial reverse pressure. Furthermore, by combining the sealing ring structure at the mating end face and other positions in traditional structures, the overall sealing performance of the electrical connector is comprehensively ensured. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the socket structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the plug structure of this utility model.

[0017] In the diagram: 1. Seat housing; 2. Connecting flange; 3. End face sealing groove; 4. Flat sealing ring; 5. Circumferential sealing ring; 6. External screw thread; 7. Guide groove; 8. Front insulating plate of the pin; 9. Rear insulating plate of the pin; 10. Intermediate sintered plate; 11. Pin assembly; 12. Head housing; 13. Guide key structure; 14. Sealing groove; 15. Front limit step; 16. Insertion hole insulating sintered plate; 17. Insertion hole assembly; 18. Sintered flange platform; 19. Locking cap; 20. Internal screw thread; 21. Plug tail attachment. Detailed Implementation

[0018] The following explanation, in conjunction with the accompanying drawings, will provide further details.

[0019] Figure 1 , 2 As shown: A watertight electrical connector, including a socket and a plug, such as... Figure 1The outer circumference of the rear end of the socket housing 1 is connected by a flange 2. A flat sealing ring 4 is embedded in the groove on the side of the flange 2 facing away from the socket mating end. A circumferential sealing ring 5 is provided on the outer circumference of the side of the flange facing away from the socket mating end. An external thread 6 is provided on the outer circumference of the mating section of the socket housing 1. An intermediate sintered plate 10 is connected to the inside of the socket housing 1 via glass sintering. Front and rear insulating plates 8 and 9 of the pins are respectively provided on the front and rear of the intermediate sintered plate 10. Multiple pin assemblies 11 are axially connected to the front insulating plate 8, the intermediate sintered plate 10, and the rear insulating plate 9. Figure 1 The thickness relationship between the intermediate sintered plate 10 and the insulating plate is not limited by the attached drawings. A ring of end-face sealing grooves 3, corresponding to the end-face of the head housing and the built-in sealing ring, is provided on the step of the mating end face inside the seat housing 1. A ring of multiple axial guide grooves 7 is provided on the inner wall of the mating end of the seat housing 1. For example... Figure 2 The head housing 12 of the plug is connected to the plug tail 21. The outer periphery of the head housing 12's mating section is provided with or milled into a ring of multiple axially corresponding mating guide grooves 7. The outer periphery of the head housing 12's mating section is provided with multiple sealing grooves 14 with built-in sealing rings. The inner wall of the plug's locking cap 19's mating section is provided with an internal thread 20 corresponding to the external thread 6. The head housing 12 has a glass-sintered insulating sintered plate 16 for the socket. The front end of the insulating sintered plate 16 abuts against the front limiting step 15 inside the head housing 12. The rear end of the insulating sintered plate is secured in the head housing by a retaining ring or connected to the plug tail 21. The head housing is pressed and limited, or the plug tail is pressed and limited towards the head housing via an inner limiting sleeve. This front and rear limiting technology is a conventional technology in the field of electrical connectors, and will not be described in detail in this embodiment and the accompanying drawings. Multiple socket assemblies 17 are integrally sintered axially on the socket insulating sintered plate 16. Multiple sintered flanges 18 are provided on the sintered section of the socket insulating sintered plate 16. The accompanying drawings show the sintered flanges 18 on the socket assembly 17. The socket insulating sintered plate 16 is not in place. According to the actual assembly requirements, the position of the socket insulating guard plate 16 should be forward and abut against the front limiting step 15 at the position shown in the figure.

Claims

1. A watertight electrical connector comprising a plug and a socket, characterized in that: The outer periphery of the socket's seat shell insertion section is provided with external screw threads, the outer periphery of the plug's head shell insertion section is provided with a plurality of sealing grooves with built-in sealing rings, and the inner wall of the plug's locking cap insertion section is provided with internal screw threads corresponding to the external screw threads; the plug pin insulation assembly inserted into the socket's seat shell includes plug pin front and rear insulation plates, an intermediate sintered plate, and a plurality of plug pin assemblies, the plug pin assemblies are integrally sintered in the seat shell through the intermediate sintered plate sintered by glass, and the intermediate sintered plate is provided with plug pin front and rear insulation plates at the front and rear ends, respectively. The plug hole insulation assembly inserted into the plug's head shell includes a plug hole insulation sintered plate and a plurality of plug hole assemblies, the plug hole assemblies are integrally sintered in the head shell through the plug hole insulation sintered plate sintered by glass, the front end of the plug hole insulation sintered plate abuts against the front limiting step in the head shell, and the rear end of the plug hole insulation sintered plate is clamped in the head shell by a clamping ring or is pressed against the head shell by a tail of the plug or an inner limiting sleeve of the tail of the plug.

2. A watertight electrical connector according to claim 1, characterised in that: The plug pin front and rear insulation plates are in interference fit with the inner wall of the seat shell.

3. The watertight electrical connector of claim 1, wherein: The outer periphery of the plug pin front and rear insulation plates is embedded with an insulation sealing ring in interference fit with the inner wall of the seat shell.

4. A watertight electrical connector according to claim 1 or 2 or 3, characterised in that: The plug pin front and rear insulation plates are PE insulation plates.

5. The watertight electrical connector of claim 1, wherein: The plug hole assemblies sintered in the plug hole insulation sintered plate are provided with a plurality of sintered flange tables with diameters greater than that of the plug hole assemblies.

6. The watertight electrical connector of claim 1, wherein: The rear end of the seat shell is provided with a connecting flange, and a mounting hole is formed in the connecting flange.

7. A watertight electrical connector according to claim 6, characterised in that: A flat sealing ring is embedded in the groove on the side of the connecting flange away from the insertion end of the socket.

8. A watertight electrical connector according to claim 6 or 7, characterised in that: The seat shell is provided with a circumferential sealing ring on the outer periphery of the side of the connecting flange away from the insertion end of the socket.

9. The watertight electrical connector of claim 1, wherein: The socket's seat shell is provided with an end face sealing groove corresponding to the end face of the head shell on the insertion end face step corresponding to the insertion end face of the seat shell in the seat shell.

10. The watertight electrical connector of claim 1, wherein: The inner wall of the insertion end of the socket's seat shell is provided with a plurality of axial guide grooves, and the outer periphery of the insertion end of the plug's head shell is provided with or milled into a plurality of axial guide key structures corresponding to the guide grooves.

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