CN219067355U

CN219067355U - On-shore plugging watertight connector

Info

Publication number: CN219067355U
Application number: CN202223422149.8U
Authority: CN
Inventors: 王定森; 陈明伟; 陈建聪
Original assignee: Xiamen Wain Electrical Co ltd
Current assignee: Xiamen Wain Electrical Co ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-05-23
Anticipated expiration: 2032-12-20

Abstract

The utility model provides an on-shore plugging watertight connector, which comprises a socket and a plug, wherein the socket comprises a socket body and a cable chuck assembly detachably connected with the socket body, the socket body comprises a composite female pin, an insulating female plug body and a female end shell, the cable chuck assembly comprises a connecting sleeve, a partition plate is arranged in an inner cavity of the connecting sleeve, a wiring terminal of a cable penetrating through the tail part of the connecting sleeve is penetrated in the partition plate and is detachably and electrically connected with the rear end of the composite female pin, and a cavity inside the connecting sleeve, which is positioned behind the partition plate, is sealed by glue filling. According to the shore plugging watertight connector provided by the utility model, the plug body is detachable because no glue is filled, and the socket can be detached and assembled on the using site, so that the maintenance and the replacement of accessories are convenient.

Description

On-shore plugging watertight connector

Technical Field

The utility model relates to the field of underwater connectors, in particular to an onshore pluggable watertight connector.

Background

The prior art of a water-tight connector which is used in a deep sea environment and plugged on the shore basically comprises parts such as a shell, an insulator, an elastic retainer ring, an O-shaped sealing ring and the like. In order to achieve better sealing performance, the internal structure of the existing shore plugging watertight connector is formed by integrally forming a contact pin and an insulating plug body, and then the shell of the male end and the female end is sealed by adopting an elastic gasket or a sealing ring.

The existing watertight connector mainly has the following problems: in recent years, with the continuous acceleration of industrialization, environmental pollution caused by human activities is also increasing, including ecological damage in the offshore. At present, china has entered an eutrophication age, and the environmental quality of offshore areas is increasingly deteriorated. Such connectors are also often installed in shallow water or offshore operations, where environmental impact, and convenience in connector maintenance or replacement must be considered. The internal structure of the existing watertight connector is inconvenient to replace and maintain because the contact pin and the insulating plug body are integrally formed. Meanwhile, the watertight connector needs to be installed in a compact space, such as equipment for integrating an underwater motor and a frequency converter, and is high in integration level and small in installation space.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the on-shore plugging watertight connector which has good tightness, is easy to disassemble and assemble and is convenient to maintain and replace accessories, and the contact pin is separated from the insulating plug body.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

the utility model provides an on-shore plugging watertight connector, which comprises a socket and a plug, wherein the socket comprises a socket body and a cable chuck assembly detachably connected with the socket body, the socket body comprises a composite female needle, an insulating female plug body sleeved outside the composite female needle and a female end shell sleeved outside the insulating female plug body, and sealing is formed between the composite female needle and the insulating female plug body and between the female end shell and the insulating female plug body; the cable chuck assembly comprises a connecting sleeve detachably connected with the rear end of the female end shell, a partition plate is arranged in an inner cavity of the connecting sleeve, a connecting terminal of a cable penetrating through the tail of the connecting sleeve is penetrated in the partition plate and detachably and electrically connected with the rear end of the composite female needle, and a cavity inside the connecting sleeve, which is positioned behind the partition plate, is filled with glue and sealed.

The inner hole of the insulating female plug body is a step hole with a large front part and a small rear part, the shape of the composite female needle is a step shape matched with the inner hole of the insulating female plug body, and the step of the inner hole of the insulating female plug body faces the composite female needle to form axial backward limit; the front part of the inner cavity of the female end shell is in a step shape with large front part and small back part, the shape of the insulating female plug body is in a step shape matched with the front part of the inner cavity of the female end shell, and the step at the front part of the inner cavity of the female end shell faces the insulating female plug body to form an axial backward limit; the back part of the inner cavity of the female end shell is detachably provided with a first fastening component, and the first fastening component is matched with the female end shell to limit the formation of the composite female needle and the insulating female plug body axially forwards.

The female end shell comprises a female end shell body, wherein an annular first limiting step is arranged in an inner cavity of the female end shell body, the first fastening assembly comprises a female sealing end cover, a female needle protection seat and a first fastening nut, the female sealing end cover, the female needle protection seat and the first fastening nut sequentially penetrate through a composite female needle backwards, the front end face of the female sealing end cover is abutted to the rear end face of the first limiting step, the female needle protection seat is abutted to a female sealing locking cover, and the first fastening nut is fastened on the composite female needle through threads and is abutted to the female needle protection seat.

The composite female pin comprises a female pin and a vulcanized rubber sleeve wrapped on the surface of the female pin, the vulcanized rubber sleeve and the female pin are integrally vulcanized and formed, and the vulcanized rubber sleeve of the composite female pin is in interference fit with an inner hole of the insulating female pin body to form radial seal; when the first fastening nut is screwed down, axial sealing is realized by axial extrusion between the vulcanized rubber end face at the step of the composite female pin and the step face of the inner hole of the insulating female plug.

The female pin is provided with a rotation stopping step, the female pin protection seat is provided with a rotation stopping hole matched with the rotation stopping step on the female pin, and the rotation stopping step is matched with the rotation stopping hole to limit the rotation of the composite female pin; the rear end of the female seal end cover is provided with a mounting groove matched with the front end of the female needle protection seat, the inner wall of the mounting groove is provided with a rotation stopping platform, the female needle protection seat is provided with a rotation stopping notch, and the rotation stopping notch is matched with the rotation stopping platform to prevent the composite female needle from rotating.

The plug comprises a composite male pin, an insulating male plug body sleeved outside the composite male pin, and a male end shell sleeved outside the insulating male plug body, wherein the composite male pin and the insulating male plug body and the male end shell and the insulating male plug body are detachably and hermetically connected.

The inner hole of the insulating male plug body is a step hole with a large front part and a small rear part, the shape of the composite male pin is a step shape matched with the step hole of the insulating male plug body, and the step of the inner hole of the insulating male plug body faces the composite male pin to form axial backward limit; the inner cavity of the male end shell is in a step shape with gradually decreasing front and back, the outer shape of the insulating male plug body is in a step shape matched with the inner cavity of the male end shell, and the step of the inner cavity of the male end shell faces the insulating male plug body to form an axial backward limit; the rear end of the male end shell is detachably provided with a second fastening component, and the second fastening component is matched with the male end shell to limit the formation of the composite male pin and the insulating male plug in an axial forward direction.

The second fastening component comprises a male sealing end cover, a male needle protection seat and a second fastening nut, wherein the male sealing end cover, the male needle protection seat and the second fastening nut sequentially penetrate through the composite male needle backwards, the male sealing end cover seals the rear end of the inner cavity of the male end shell, the male needle protection seat abuts against the male sealing locking cover, and the second fastening nut is fastened on the composite male needle through threads and abuts against the male needle protection seat.

The composite male pin comprises a male pin and a vulcanized rubber sleeve wrapped on the surface of the male pin, the vulcanized rubber sleeve and the male pin are integrally vulcanized and formed, and the vulcanized rubber sleeve of the composite male pin is in interference fit with an inner hole of the insulating male pin body to form radial seal; when the second fastening nut is screwed down, axial sealing is realized by axial extrusion between the vulcanized rubber end face at the step of the composite male pin and the step face of the inner hole of the insulating male insert.

The male pin is provided with a rotation stopping step, the male pin protection seat is provided with a rotation stopping hole matched with the rotation stopping step on the male pin, and the rotation stopping step is matched with the rotation stopping hole to prevent the composite male pin from rotating; the rear end of the male seal end cover is provided with a mounting groove matched with the front end of the male needle protection seat, the inner wall of the mounting groove is provided with a rotation stopping platform, the male needle protection seat is provided with a rotation stopping notch, and the rotation stopping notch is matched with the rotation stopping platform to prevent the composite male needle from rotating.

Compared with the prior art, the on-shore plugging watertight connector provided by the utility model has the following advantages:

1. the socket comprises a socket body and a cable chuck assembly, a baffle is additionally arranged in a connecting sleeve of the cable chuck assembly, sealing connection among all parts in the cable chuck assembly is realized by glue filling in a cavity behind the baffle, and glue does not fill in front of the baffle, so that detachable connection is realized between the cable chuck assembly and the socket body; in addition, glue is not filled in the socket body, the composite female needle, the insulating female plug body and the female end shell are detachably connected, the whole socket body and the cable chuck assembly are easy to detach and assemble, and the socket body can be detached and assembled on the site for use, so that the socket is convenient to maintain and replace accessories. The plug and the socket body are of similar structures, and the composite male pin, the insulating male plug body and the male end shell in the plug can be assembled and disassembled on site. Therefore, the on-shore plugging watertight connector provided by the utility model has the advantages of convenience in assembly and disassembly, and greatly improves the convenience in maintenance.

2. When the composite female pin is assembled, the vulcanized rubber sleeve of the composite female pin is in interference fit with the inner hole of the insulating female plug body to form radial seal, and meanwhile, the first fastening assembly enables axial extrusion between the composite female pin and the insulating female plug body to form axial seal; the same principle is adopted for the compound common needles; the contact pin and seal integrated structural design ensures that the watertight connector has good insulativity and sealing performance.

3. The composite female needle and the composite male needle are assembled in a front-back insertion mode, and the higher the water pressure is, the stronger the sealing performance is and the more reliable the water pressure is in a deep water environment.

Drawings

FIG. 1 is a schematic view of a plug;

FIG. 2 is a cross-sectional view of a plug;

FIG. 3 is a schematic structural view of a composite pin;

FIG. 4 is a schematic view of a male needle guard;

FIG. 5 is a schematic view of an insulated male insert;

FIG. 6 is a schematic structural view of a socket;

FIG. 7 is a cross-sectional view of a receptacle;

FIG. 8 is a schematic view of a composite female needle;

FIG. 9 is a schematic view of a female needle guard;

FIG. 10 is a schematic view of a female seal end cap;

fig. 11 is an exploded view of the receptacle and plug.

Description of the reference numerals: 1. a composite male needle; 2. a male end housing; 3. an insulating male plug; 4. a male needle protection seat; 5. a male seal end cap; 6. locking a screw; 7. a first limit step; 8. annular sealing ribs; 9. vulcanizing the rubber sleeve; 10. a mounting groove; 11. a rotation stopping step; 12. a connection terminal; 13. a seal ring; 14. a composite female needle; 15. a female end housing; 16. an insulating female plug; 17. a locking sleeve; 18. a female seal end cap; 19. a glue filling port; 20. connecting sleeves; 21. a circlip; 22. a female needle protection seat; 23. a rotation stopping hole; 24. a rotation stopping notch; 25. a rotation stopping platform; 26. a partition plate; 27. a glue filling cavity; 28. a first fastening nut; 29. a second fastening nut; 30. a female pin; 31. a clamping sleeve; 32. and a male pin.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The orientation described herein is such that the front end of the plug is the right end in fig. 2 and the front end of the receptacle is the left end in fig. 7.

The present embodiment discloses a water-tight connector for plugging and unplugging on shore, which comprises a socket and a plug, wherein the socket comprises a socket body and a cable chuck assembly detachably connected to the rear end of the socket body, as shown in fig. 7 to 10, the socket body comprises a composite female pin 14, an insulating female plug body 16 sleeved outside the composite female pin 14, a female end shell 15 sleeved outside the insulating female plug body 16, and the socket body 14 is detachably and hermetically connected with the insulating female plug body 16, and the female end shell 15 is detachably and hermetically connected with the insulating female plug body 16. The cable chuck assembly comprises a connecting sleeve 20 detachably connected with the rear end of a female end shell 15, a partition plate 26 is arranged in an inner cavity of the connecting sleeve 20, a connecting terminal 12 of a cable penetrating through the tail of the connecting sleeve 20 is penetrated in the partition plate 26 and detachably and electrically connected with the rear end of a composite female needle 14, and a cavity inside the connecting sleeve 20 and behind the partition plate 26 is filled with glue for sealing.

In the cable chuck assembly of the embodiment, a partition plate 26 is additionally arranged in the connecting sleeve 20, and sealing connection among all parts in the cable chuck assembly is realized by glue filling in a cavity behind the partition plate 26, and glue does not fill in front of the partition plate 26, so that detachable connection between the cable chuck assembly and the socket body can be realized; in addition, no glue is filled in the socket body, the composite female pin 14, the insulating female plug body 16 and the female end shell 15 can be detachably connected, and the whole socket body, the socket body and the cable chuck assembly can be easily detached and assembled and can be detached on the site of use.

In a specific structure, the inner hole of the insulating female plug 16 is a step hole with a large front part and a small rear part, the shape of the composite female needle 14 is a step shape matched with the inner hole of the insulating female plug 16, and the step of the inner hole of the insulating female plug 16 faces the composite female needle 14 to form an axial backward limit. The front part of the inner cavity of the female end shell 15 is in a step shape with large front part and small back part, the shape of the insulating female plug body 16 is in a step shape matched with the front part of the inner cavity of the female end shell 15, and the step at the front part of the inner cavity of the female end shell 15 faces the insulating female plug body 16 to form axial backward limit. The rear part of the inner cavity of the female end shell 15 is detachably provided with a first fastening component, and the first fastening component is matched with the female end shell 15 to form forward limit on the composite female pin 14 and the insulating female plug body 16. The first fastening assembly is installed, and meanwhile, axial limiting of the composite female needle 14 and the insulating female plug body 16 is achieved, and axial movement is avoided.

In a specific structure, as shown in fig. 7, an annular first limiting step 7 is disposed in an inner cavity of the female end housing 15, the first fastening component includes a female seal end cover 18, a female needle protecting seat 22 and a first fastening nut 28, which sequentially pass through the composite female needle 14 backward, a front end surface of the female seal end cover 18 abuts against a rear end surface of the first limiting step 7, the female needle protecting seat 22 abuts against the female seal end cover 18, and the first fastening nut 28 is fastened on the composite female needle 14 through threads and abuts against the female needle protecting seat 22. The female seal end cap 18 is connected to the insulating female plug 16 by the locking screw 6.

The composite pin 14 comprises a pin 30 (conductor) and a vulcanized rubber sleeve 9 wrapped on the surface of the pin 30, and in order to improve the insulativity and the sealing performance of the composite pin 14, the vulcanized rubber sleeve 9 and the pin 30 are integrally vulcanized and formed, and the vulcanized rubber sleeve 9 of the composite pin 14 and an inner hole of the insulating pin 16 are in interference fit to form radial sealing. When the first fastening nut 28 is screwed down, axial sealing is realized by axial extrusion between the vulcanized rubber end surface at the step of the composite pin 14 and the step surface of the inner hole of the insulating female plug body 16. The composite pin 14 is assembled in a plug-in manner from front to back, the assembly is convenient, and the sealing performance between the composite pin 14 and the insulating female plug 16 is better as the water pressure is higher in a deep water environment.

In one embodiment, in order to increase the tightness, a plurality of annular sealing ribs 8 are arranged on the periphery of the vulcanized rubber sleeve 9 of the composite female pin 14 along the axial direction, and each annular sealing rib 8 is in sealing abutting connection with the side wall of the inner hole of the insulating female plug body 16.

The rear end of the female pin 30 is provided with a screw thread section, and the connection terminal 12 is connected to the screw thread section through screw threads. The terminal 12 and the female pin 30 may also be connected by a snap-fit connection. To increase the creepage distance, a female pin protection seat 22 is added to the female pin 30 near the thread section. The female pin protector 22 has a rearwardly opening receiving aperture with a sidewall surrounding the periphery of the terminal 12 and a first fastening nut 28 is located in the receiving aperture and secured to the threaded section of the female pin 30.

In order to facilitate assembly, as shown in fig. 8 and 9, the female pin 30 is provided with a rotation stopping step 11, the female pin protection seat 22 is provided with a rotation stopping hole 23 matched with the rotation stopping step 11 on the female pin 30, and the rotation stopping step 11 is matched with the rotation stopping hole 23 to prevent rotation between the composite female pin 14 and the female pin protection seat 22. In one embodiment, the anti-rotation step 11 and the anti-rotation hole 23 are both square. In other embodiments, the anti-rotation stage 11 and the anti-rotation hole 23 may also be triangular, pentagonal, hexagonal, elliptical, etc.

In one embodiment, as shown in fig. 10, a mounting groove 10 adapted to the front end of a female needle protecting seat 22 is provided at the rear end of a female seal end cover 18, a rotation stopping platform 25 is provided on the inner wall of the mounting groove 10, a rotation stopping notch 24 is provided on the female needle protecting seat 22, and the rotation stopping notch 24 cooperates with the rotation stopping platform 25 to prevent rotation between the female seal end cover 18 and the female needle protecting seat 22.

In order to increase the tightness, as shown in fig. 7, a sealing ring 13 is arranged between the outer peripheral surface of the insulating female plug body 16 and the inner cavity wall of the female end shell 15 to form radial sealing, and a sealing ring 13 is arranged between the step surface of the front part of the inner cavity of the female end shell 15 and the step surface of the insulating female plug body 16 to form axial sealing. The insulating female plug-in body 16 is assembled in a plug-in mode from front to back, the assembly is convenient, and in a deep water environment, the higher the water pressure is, the better the sealing performance between the insulating female plug-in body 16 and the female end shell 15 is.

The rear end of the interior of the connecting sleeve 20 of the cable chuck assembly is provided with a clamping sleeve 31, a space between the partition plate 26 and the clamping sleeve 31 is a glue filling cavity 27, and a plurality of glue filling openings 19 are formed in the side wall of the connecting sleeve 20 of the cable chuck corresponding to the glue filling cavity 27 for the simplicity of operation. The inner wall of the inner cavity of the female end shell 15 is provided with an inner thread, the front end of the connecting sleeve 20 is provided with an outer thread, and the connecting sleeve 20 is connected with the rear end of the female end shell 15 through threads. The connection sleeve 20 and the female housing 15 may also be connected using a snap fit connection.

As shown in fig. 1 and 2, the plug comprises a composite male pin 1, an insulating male plug body 3 sleeved outside the composite male pin 1, and a male end shell 2 sleeved outside the insulating male plug body 3, wherein the composite male pin 1 and the insulating male plug body 3 and the male end shell 2 and the insulating male plug body 3 are detachably and hermetically connected.

As shown in fig. 2 and 5, the inner hole of the insulating male pin 3 is a step hole with a large front part and a small rear part, the outer shape of the composite male pin 1 is a step shape matched with the step hole of the insulating male pin 3, and the step of the inner hole of the insulating male pin 3 faces the composite male pin 1 to form axial backward limit. The inner cavity of the male end shell 2 is in a step shape with gradually decreasing front and back sizes, the outer shape of the insulating male plug body 3 is in a step shape matched with the inner cavity of the male end shell 2, and the step of the inner cavity of the male end shell 2 faces the insulating male plug body 3 to form axial backward limit. The rear end of the male end shell 2 is detachably provided with a second fastening component, and the second fastening component is matched with the male end shell 2 to form forward limit on the composite male pin 1 and the insulating male plug body 3. And the second fastening assembly is installed, and meanwhile, the axial limit of the composite male pin 1 and the insulating male plug body 3 is realized, so that the axial movement is avoided.

The second fastening assembly comprises a male sealing end cover 5, a male needle protection seat 4 and a second fastening nut 29, wherein the male sealing end cover 5, the male needle protection seat 4 and the second fastening nut 29 sequentially penetrate through the composite male needle 1 backwards, the male sealing end cover 5 seals the rear end of the inner cavity of the male end shell 2, the male needle protection seat 4 is abutted against the male sealing locking cover, and the second fastening nut 29 is fastened on the composite male needle 1 through threads and is abutted against the male needle protection seat 4. The male seal end cover 5 is connected with the insulating male plug body 3 through a locking screw 6.

As shown in fig. 3, the composite male pin 1 comprises a male pin 32 (conductor) and a vulcanized rubber sleeve 9 wrapped on the surface of the male pin 32, and in order to improve the insulativity and the sealing performance of the composite male pin 1, the vulcanized rubber sleeve 9 and the male pin 32 are integrally vulcanized and formed, and the vulcanized rubber sleeve 9 of the composite male pin 1 is in interference fit with an inner hole of the insulating male pin 3 to form radial sealing; when the second fastening nut 29 is screwed down, axial sealing is realized by axial extrusion between the vulcanized rubber end face at the step of the composite male pin 1 and the step face of the inner hole of the insulating male plug body 3. The composite male pin 1 is assembled in a plug-in mode from front to back, the assembly is convenient, and the sealing performance between the composite male pin 1 and the insulating male plug body 3 is better when the water pressure is higher in a deep water environment.

In one embodiment, in order to increase the tightness, as shown in fig. 3, a plurality of annular sealing ribs 8 are axially arranged on the periphery of the vulcanized rubber sleeve 9 of the composite male pin 1, and each annular sealing rib 8 is in sealing abutting connection with the side wall of the inner hole of the insulating male plug body 3. The front end of the composite male needle 1 is a contact end, the front end of the composite female needle 14 is a contact end, the vulcanized rubber sleeve 9 of the composite female needle 14 forms a sleeve for sealing and sleeving the composite male needle 1 at the front end of the composite female needle 14, as shown in fig. 6, a plurality of annular sealing ribs 8 which are in sealing and abutting connection with the front end of the composite male needle 1 are axially arranged inside the sleeve.

The rear end of the male pin 32 is provided with a threaded section to which the connection terminal 12 is screwed. In order to increase the creepage distance, a male pin protection seat 4 is added on the male pin 32 near the thread section. The male pin protection seat 4 has a receiving hole with an opening facing rearward, a side wall of which is provided around the periphery of the terminal 12, and a second fastening nut 29 is located in the receiving hole and is locked on the threaded section of the male pin 32.

Referring to fig. 3 and 4, for easy assembly, the male pin 32 is provided with a rotation stopping step 11, the male pin protection seat 4 is provided with a rotation stopping hole 23 adapted to the rotation stopping step 11 on the male pin 32, and the rotation stopping step 11 cooperates with the rotation stopping hole 23 to prevent rotation between the composite male pin 1 and the male pin protection seat 4. In one embodiment, the anti-rotation step 11 and the anti-rotation hole 23 are both square. In other embodiments, the anti-rotation stage 11 and the anti-rotation hole 23 may also be triangular, pentagonal, hexagonal, elliptical, etc.

In one embodiment (refer to the female seal end cap of fig. 10), the rear end of the male seal end cap 5 is provided with a mounting groove 10 adapted to the front end of the male needle protection seat 4, the inner wall of the mounting groove 10 is provided with a rotation stopping platform 25, the male needle protection seat 4 is provided with a rotation stopping notch 24, and the rotation stopping notch 24 cooperates with the rotation stopping platform 25 to prevent rotation between the male seal end cap 5 and the male needle protection seat 4.

In order to increase the tightness, a sealing ring 13 is arranged between the outer peripheral surface of the insulating male plug body 3 and the inner cavity wall of the male end shell 2 to form radial sealing, and a sealing ring 13 is arranged between the step surface of the inner cavity of the male end shell 2 and the step surface of the insulating male plug body 3 to form axial sealing. The insulation male plug body 3 is assembled in a plug-in mode from front to back, the assembly is convenient, and the sealing performance between the insulation male plug body 3 and the male end shell 2 is better when the water pressure is higher in a deep water environment.

The composite male pin 1 and the sealing structure provided in this embodiment are designed integrally, and the composite male pin 1 and the sealing structure form a modular assembly and disassembly. During assembly, the composite male pin 1 passes through the through holes on the insulating male plug body 3, the male sealing end cover 5 and the male pin protection seat 4 from front to back respectively, is fixed on the insulating male plug body 3 by the second fastening nut 29, and is screwed into the wiring terminal 12. The through hole of the insulating male pin 3 is a step hole, a section in the middle of the composite male pin 1 is set to be a step, the vulcanized rubber end face of the step of the composite male pin 1 is tightly attached to the end face of the step hole of the male pin, after the composite male pin 1 is locked by the second fastening nut 29, two end faces form a seal, and a gap between the composite male pin 1 and the insulating male pin 3 is completely sealed. The annular sealing rib 8 protruding outside the vulcanized rubber of the composite male pin 1 is matched with the inner wall of the through hole of the insulating male plug body 3 to form a second seal. When the insulation male pin is detached, the second fastening nut 29 is unscrewed, and the composite male pin 1 can be pulled out from the front end of the insulation male plug body 3. The disassembly and assembly process of the composite master needle 14 is the same.

The front end of the female end shell 15 is externally sleeved with a locking sleeve 17, the rear end of the locking sleeve 17 is connected with the female end shell 15 through an elastic check ring 21, the elastic check ring 21 is clamped on the female end shell 15, and the outer edge of the elastic check ring 21 is arranged in an annular groove on the inner wall of the rear end of the locking sleeve 17. Referring to fig. 11, an internal thread is provided at a position near the middle of the inner hole of the locking sleeve 17, an external thread is provided at the front end of the male end housing 2, and the male end housing 2 and the locking sleeve 17 are locked by threads. A sealing ring 13 is arranged on the male end shell 2 near the external thread, and the sealing ring 13 is tightly contacted with the inner wall of the front end of the locking sleeve 17 to realize sealing. The outer periphery of the male end shell 2 is provided with an annular connecting part which is used for being connected with the installation bulkhead, and the outer periphery and the end face of the annular connecting part are provided with sealing rings 13.

It should be noted that, the mounting positions of the composite female pin 14 in the socket and the composite male pin 1 in the plug may be interchanged, that is, the composite male pin 1 may be located inside the socket, and the composite female pin 14 may be located inside the plug. Whether the composite male needle 1 or the composite female needle 14, the size can be changed according to different working conditions.

The embodiments are merely illustrative of the technical solution of the present utility model, and not limiting thereof; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and therefore all other embodiments obtained by those skilled in the art without making creative efforts are intended to fall within the protection scope of the present utility model.

Claims

1. The utility model provides a shore plug watertight connector, includes socket and plug, its characterized in that: the socket comprises a socket body and a cable chuck assembly which is detachably connected with the socket body, wherein the socket body comprises a composite female pin, an insulating female plug body sleeved outside the composite female pin and a female end shell sleeved outside the insulating female plug body, and sealing is formed between the composite female pin and the insulating female plug body and between the female end shell and the insulating female plug body; the cable chuck assembly comprises a connecting sleeve detachably connected with the rear end of the female end shell, a partition plate is arranged in an inner cavity of the connecting sleeve, a connecting terminal of a cable penetrating through the tail of the connecting sleeve is penetrated in the partition plate and detachably and electrically connected with the rear end of the composite female needle, and a cavity inside the connecting sleeve, which is positioned behind the partition plate, is filled with glue and sealed.

2. The shore plug watertight connector of claim 1, wherein: the inner hole of the insulating female plug body is a step hole with a large front part and a small rear part, the shape of the composite female pin is matched with the inner hole of the insulating female plug body, and the step of the inner hole of the insulating female plug body faces the composite female pin to form axial backward limit; the front part of the inner cavity of the female end shell is in a step shape with large front part and small back part, the shape of the insulating female plug body is matched with the front part of the inner cavity of the female end shell, and the step at the front part of the inner cavity of the female end shell faces the insulating female plug body to form an axial backward limit; the female end shell is characterized in that a first fastening component is detachably arranged at the rear part of the inner cavity of the female end shell, and the first fastening component is matched with the female end shell to limit the formation of the composite female needle and the insulating female plug body axially forwards.

3. The shore plug watertight connector of claim 2, wherein: the female end shell comprises a female end shell body, wherein an inner cavity of the female end shell body is internally provided with an annular first limiting step, the first fastening assembly comprises a female sealing end cover, a female needle protection seat and a first fastening nut, the female sealing end cover, the female needle protection seat and the first fastening nut sequentially penetrate through the female needle in the backward direction, the front end face of the female sealing end cover is abutted to the rear end face of the first limiting step, the female needle protection seat is abutted to the female sealing locking cover, and the first fastening nut is fastened on the female needle in the backward direction through threads and is abutted to the female needle protection seat.

4. An on-shore plug watertight connector as claimed in claim 3, wherein: the composite female pin comprises a female pin and a vulcanized rubber sleeve wrapped on the surface of the female pin, the vulcanized rubber sleeve and the female pin are integrally vulcanized and formed, and the vulcanized rubber sleeve of the composite female pin is in interference fit with an inner hole of the insulating female pin body to form radial seal; when the first fastening nut is screwed down, axial sealing is realized by axial extrusion between the vulcanized rubber end face at the step of the composite female pin and the step face of the inner hole of the insulating female plug.

5. The shore plug watertight connector of claim 4, wherein: the female pin is provided with a rotation stopping step, the female pin protection seat is provided with a rotation stopping hole matched with the rotation stopping step on the female pin, and the rotation stopping step is matched with the rotation stopping hole to directionally stop rotation; the female seal end cover rear end is equipped with the mounting groove with female needle protection seat front end looks adaptation, and the mounting groove inner wall is equipped with and ends the platform that changes, is equipped with on the female needle protection seat and ends the breach that changes, ends the breach and ends the directional rotation that ends of platform cooperation.

6. The shore plug watertight connector of claim 1, wherein: the plug comprises a composite male pin, an insulating male plug body sleeved outside the composite male pin, and a male end shell sleeved outside the insulating male plug body, wherein the composite male pin and the insulating male plug body and the male end shell and the insulating male plug body are detachably and hermetically connected.

7. The shore plug watertight connector of claim 6, wherein: the inner hole of the insulating male pin body is a step hole with a large front part and a small back part, the outer shape of the composite male pin is a step shape matched with the step hole of the insulating male pin body, and the step of the inner hole of the insulating male pin body faces the composite male pin to form axial backward limit; the inner cavity of the male end shell is in a step shape with gradually decreasing front and back sizes, the outer shape of the insulating male plug body is in a step shape matched with the inner cavity of the male end shell, and the step of the inner cavity of the male end shell faces the insulating male plug body to form an axial backward limit; the rear end of the male end shell is detachably provided with a second fastening component, and the second fastening component is matched with the male end shell to limit the formation of the composite male pin and the insulating male plug in an axial forward direction.

8. The shore plug watertight connector of claim 7, wherein: the second fastening component comprises a male sealing end cover, a male needle protection seat and a second fastening nut, wherein the male sealing end cover, the male needle protection seat and the second fastening nut sequentially penetrate through the composite male needle backwards, the male sealing end cover seals the rear end of the inner cavity of the male end shell, the male needle protection seat is abutted to the male sealing locking cover, and the second fastening nut is fastened on the composite male needle through threads and is abutted to the male needle protection seat.

9. The shore plug watertight connector of claim 8, wherein: the composite male pin comprises a male pin and a vulcanized rubber sleeve wrapped on the surface of the male pin, the vulcanized rubber sleeve and the male pin are integrally vulcanized and formed, and the vulcanized rubber sleeve of the composite male pin is in interference fit with an inner hole of the insulating male pin body to form radial seal; when the second fastening nut is screwed down, axial sealing is realized by axial extrusion between the vulcanized rubber end face at the step of the composite male pin and the step face of the inner hole of the insulating male insert.

10. The shore plug watertight connector of claim 9, wherein: the male pin is provided with a rotation stopping table step, the male pin protection seat is provided with a rotation stopping hole matched with the rotation stopping step on the male pin, and the rotation stopping step is matched with the rotation stopping hole to stop rotation in a directional manner; the rear end of the male seal end cover is provided with a mounting groove matched with the front end of the male needle protection seat, the inner wall of the mounting groove is provided with a rotation stopping platform, the male needle protection seat is provided with a rotation stopping notch, and the rotation stopping notch is matched with the rotation stopping platform to directionally stop rotation.