Wet pluggable electrical connector

Abstract

The present invention relates to a wet-plug electrical connector. The connector adopts the principle of pressure balance between the inside and outside of the connector to eliminate the pressure difference between the inside and outside seals of the connector. The pressure balance mechanism is implemented by a freely deformable oil bag. The pressure at the sealing position of the connector is eliminated by balancing the oil bag with the oil domain inside the connector and the pressure water domain on the other side of the oil bag, thereby achieving sealing. The connector plugging and unplugging process is sealed by a rotating seal. The rotating seal has a through hole. The through hole of the rotating seal in the unplugged state is blocked and sealed. When plugged in, the rotating seal of the mating connector is tightly sealed and rotated until the through hole is connected to form a through oil domain. The two independent balanced oil domains of the mating connectors are connected to form a balanced oil domain. The contacts of the connector are plugged in and connected in the oil domain for long-term operation. During the connector separation process, the connector contacts are separated, and the rotating seal assembly rotates to the position where the through hole is blocked, thereby sealing and separating.

Description

Technical Field

[0001] The invention relates to the field of electric transmission equipment, in particular to a wet plug-in electric connector. Background Art

[0002] Connectors that are plugged and unplugged in underwater environments are generally called wet-plug electrical connectors. Underwater, especially in marine environments, water, microorganisms, seaweed, debris and other debris can easily enter the connector, causing problems such as connector jamming and circuit failure. Existing connectors for harsh environments all keep the electrical contacts inside the connector before, during and after plugging and unplugging, and are not affected by the external environment.

[0003] Existing connectors generally achieve dustproof function by adding baffles when used. This structure can only be used to achieve simple dustproof function in ordinary environments and cannot be used underwater. Existing underwater wet plug electrical connectors have low reliability when plugged and unplugged underwater, and the plugging and unplugging force is large, which is not suitable for operation. Therefore, there is an urgent need for a wet plug electrical connector that is easy to operate and has high reliability. Summary of the invention

[0004] The present invention provides a wet-plug electrical connector that is easy to operate and has high reliability. The specific technical solution is as follows:

[0005] A wet pluggable electrical connector, comprising a socket and a plug:

[0006] The seat shell 1 of the socket is provided with a seat base 4, a seat rotary seal 2, a reciprocating oil bag 201, and an electric plug pin assembly 9 from right to left in sequence; the seat base 4 is floatingly arranged in the seat shell 1, and a large reset spring 200 is arranged between the seat base 4 and the bottom of the seat shell 1; the electric plug pin assembly is fixedly arranged at the bottom of the seat shell 1; a mounting hole is provided on the seat base 4 for mounting the seat rotary seal 2; the seat rotary seal 2 is a cylindrical structure, which is rotatably mounted in the mounting hole of the seat base 4 along the radial direction of the seat base 4, and is provided with seat through holes 21 having the same number as the electric plug pin assembly 9, and the seat through holes 21 are connected with the inner cavity of the seat base 4 when rotating to the axial position of the seat base 4, and the reciprocating oil bag 201 is arranged in the cavity of the seat base 4;

[0007] The head shell 13 of the plug is provided with a head base 11, a head rotating seal 10, a head oil bag 14, an electric jack assembly 12, and a wire outlet seat 15 from left to right in sequence; the head base 11 is arranged in the cavity at the left end of the head shell 13, the head rotating seal 10 and the electric jack assembly 12 are arranged in the head base 11, the wire outlet seat 15 is arranged at the rightmost end of the head shell 13 and presses the head oil bag 14 onto the head shell 13, and the head rotating seal 10 is provided with head through holes 101 with the same number as the electric jack assembly 12, and the head through holes 101 are connected with the inner cavity of the head base 11 when rotating to the axial position of the head base 11.

[0008] Furthermore, the seat rotating seal body 2 and the head rotating seal body 10 are respectively provided with a seat rotating paddle 3 and a head rotating paddle 17, and the socket is provided with a seat driving rod 6 and a head driving rod 5 for driving the seat rotating seal body 2 and the head rotating seal body 10 to rotate.

[0009] Furthermore, the seat driving rod 6 and the head driving rod 5 can respectively drive the seat rotating paddle 3 and the head rotating paddle 17 to rotate 80° to 100°.

[0010] Furthermore, the seat rotation paddle 3 is provided with a protrusion A31 and a protrusion B32, and the head rotation paddle 17 is provided with a protrusion C (171) and a protrusion D172.

[0011] Furthermore, the seat driving rod 6 is provided with a notch B61 on the inner side of the track along which the seat rotating paddle 3 rotates.

[0012] The protrusion A31 of the seat rotating paddle 3 will slide into the notch B61, pushing the seat rotating seal body 2 to rotate inward;

[0013] The head driving rod 5 is a tuning fork-like structure, and a notch A51 is provided on each of the two forks. During the process of inserting into the socket, the notch drives the protrusion C (171) of the head rotating paddle 17 to realize the rotation of the head rotating seal body (10); the position where the notch A51 on the head driving rod (5) cooperates with the protrusion C (171) of the head rotating paddle 17 is consistent with the position where the notch B (61) on the seat driving rod cooperates with the protrusion A31 of the seat rotating paddle 3.

[0014] Furthermore, the plug is also provided with a reset spring 16, one end of which is connected to the protrusion D172 of the head rotating paddle 17; the socket is provided with a small reset spring 7 and a reset push rod 8, and the small reset spring 7 and the reset push rod 8 are connected to the protrusion B32 of the seat rotating paddle 3.

[0015] Furthermore, the sealing cavity formed between the seat rotary seal body 2, the reciprocating oil bag 201 and the seat base 4 is filled with insulating oil; the space between the head base 11 and the head oil bag 14 is filled with silicone oil, and the electrical jack assembly 12 is immersed therein;

[0016] Furthermore, the head oil bag 14 adopts a wave-shaped structure in the radial direction, and the head oil bag 14 can achieve radial and axial compression deformation; the cavity of the reciprocating oil bag 201 is connected to the outside.

[0017] Furthermore, the outer layer of the seat rotary seal body 2, the outer layer of the head rotary seal body 10, the reciprocating oil bag 201 and the head oil bag 14 are all made of rubber material; the diameter of the seat rotary seal body 2 and the head rotary seal body 10 is 0.03-0.1mm larger than the mounting hole.

[0018] Furthermore, the electrical pin assembly 9 includes an insulating component 303, a vulcanized sealing body 304, and a pin core 305; the electrical jack assembly 12 includes an electrical jack assembly tail 232, an electrical jack assembly base 233, and an electrical jack assembly crown spring 234. The electrical jack assembly 12 is completely immersed in silicone oil and is not sealed. The electrical jack assembly 12 and the electrical pin assembly 9 use the electrical jack assembly crown spring 234 to elastically contact and connect electrical signals.

[0019] The beneficial effects of the present invention are:

[0020] 1. The small reset spring, the reset tension spring and the driving rod in the present invention can realize the reset of the rotary seal. The combination of the three realizes double guarantee, realizes reliable rotation and reset of the rotary seal body, and ensures good sealing.

[0021] 2. The head oil bag in the present invention can realize radial and axial compression deformation, provide a good pressure compensation effect, achieve force balance, and will not generate a large insertion and extraction force.

[0022] 3. The electrical pin assembly and electrical socket assembly of the present invention have simple structures and are easy to process and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the socket;

[0024] Figure 2 It is a cross-sectional view of the socket;

[0025] Figure 3 is a three-dimensional schematic diagram of the plug;

[0026] Figure 4 This is a cross-sectional view of the plug;

[0027] Figure 5 This is a schematic diagram of the plug and socket connection;

[0028] Figure 6 To remove the housing, substrate, etc., the rotary seal begins to rotate and a three-dimensional schematic diagram ;

[0029] Figure 7 for Figure 6 A three-dimensional schematic diagram of another direction;

[0030] Figure 8 A schematic diagram showing the end of the rotation state of the rotary sealing body with the housing, substrate, etc. removed;

[0031] Fig. 9 is a cross-sectional view of an electrical pin assembly;

[0032] Fig.10 is a cross-sectional view of an electrical jack assembly;

[0033] Fig.11 This is the general assembly drawing of the wet pluggable electrical connector.

[0034] Description of reference numerals:

[0035] 1. Seat shell; 2. Seat rotating seal body; 3. Seat rotating paddle; 4. Seat base; 5. Head drive rod; 6. Socket drive rod; 7. Small reset spring; 8. Reset ejector rod; 9. Electrical plug pin assembly; 10. Head rotating seal body; 11. Head base; 12. Electrical plug socket assembly; 13. Head shell; 14. Head oil bag 14; 15. Outlet seat; 16. Reset tension spring; 17. Head rotating paddle; 21. Seat through hole; 31. Protrusion A; 32. Protrusion B ; 51. Notch A; 61. Notch B; 91. O-ring; 92. Seat seal; 93. Seat core; 101. Head through hole; 171. Protrusion C; 172. Protrusion D; 200. Large reset spring; 201. Reciprocating oil bag; 202. Inner cavity of the oil bag; 232. Tail of the electrical jack assembly; 233. Base of the electrical jack assembly; 234. Crown spring of the electrical jack assembly; 303. Insulating component; 304. Vulcanized seal; 305. Pin core. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] In the present invention, the front end of the socket is defined as the side where the socket and the plug mate, and the front end of the plug is defined as the side where the socket and the plug mate.

[0038] Best embodiment:

[0039] This embodiment is a wet plug electrical connector, specifically including a socket and a plug. In this embodiment, a total of 8 channels are provided. Specifically, the socket is provided with 2 seat rotary seals 2, and the corresponding plug is also provided with 2 head rotary seals 10. Each rotary seal is provided with 4 circular through holes (seat through hole 21, head through hole 101) so that the 8 electrical pin assemblies 9 in the socket can be sealed when passing through these through holes during the plugging process, and respectively cooperate with the 8 electrical socket assemblies 12 in the plug to achieve circuit connection.

[0040] like Figure 1 , Figure 2 , Figure 6 As shown, the socket as a whole includes: a socket housing 1, a socket rotating seal 2, a socket rotating paddle 3, a socket base 4, a head driving rod 5, a socket driving rod 6, a small reset spring 7, a reset push rod 8, an electric plug pin assembly 9, a large reset spring 200, and a reciprocating oil bag 201. The socket housing 1 is used to accommodate all other parts and components in the socket; a plug base 4 is provided at its front end, and the plug base 4 floats in the housing; a large reset spring 200 is provided in the middle section, and the plug driving rod 5, the socket driving rod 6 and the electric plug pin assembly 9 are installed and fixed at the rear end, and the three are inserted into the plug base 4 together.

[0041] like Figure 2 , Figure 5 , Figure 6 As shown, the reciprocating oil capsule 201 is embedded in the base body 4, and the 8 electrical plug pin assemblies 9 pass through the 8 through holes of the base rotating seal body 2, which are slightly smaller than the outer diameter of the electrical plug pin assemblies 9. The base rotating seal body 2 is installed in the circular hole at the front end of the socket base body 4, and the inner diameter of the circular hole is also slightly smaller than the outer diameter of the base rotating seal 2. The base rotating seal 2, the reciprocating oil capsule 201 and the cavity inside the base body 4 are partially filled with silicone oil, and other insulating oils can also be selected. The outer layer of the base rotating seal 2 and the reciprocating oil capsule 201 are all made of rubber material. The rubber material has excellent elasticity, so a pressure is generated, which can prevent the leakage of insulating liquid and the entry of water. An oil capsule cavity 202 is set inside the reciprocating oil capsule 201. When the connector is plugged in and out and the temperature changes, the volume of the insulating oil changes, and the volume of the oil capsule cavity 202 will also change accordingly; since the external water and the water in the oil capsule cavity 202 are connected, the pressure balance between the outside and the inside of the socket can be guaranteed.

[0042] like Figure 3 , Figure 4 , Figure 5 , Figure 7As shown, the plug includes: a head rotating seal body 10, a head base 11, an electrical jack assembly 12, a head shell 13, a head oil bag 14, a wire outlet seat 15, a reset tension spring 16, and a head rotating paddle 17. Similar to the overall structure of the socket, the head base 11 is arranged at the front end of the head shell 13, the middle section is the head oil bag 14, the rear end is the wire outlet seat 15, and other parts are installed in the head base 13. The rear end of the head oil bag 14 is tightly pressed against the head shell 13 by the wire outlet seat 15, and the internal cavity formed by the head rotating seal body 10, the head base, the head oil bag 14, the head shell 13 and the wire outlet seat 15 is filled with silicone oil. The electrical jack assembly 12 is installed in the head base 13 and is completely soaked in silicone oil. The outer edge of the head oil bag 14 is designed in a wavy shape, which can achieve radial and axial compression deformation to ensure the pressure balance between the outside and the inside of the connector.

[0043] Figure 5 This is a schematic diagram of the connection between the plug and the socket. Figure 6 , Figure 7 The schematic diagram of docking to realize the rotational seal of the socket and the plug is shown after removing the base, shell and other parts. In order to realize the reliable rotational seal and resetting of the seat rotation seal body 2, the present invention sets a seat drive rod 6, a seat rotation paddle 3, a reset push rod 8, and a small reset spring 7 on the socket. The seat drive rod 6 is provided with a notch 61 along the inner side of the seat rotation paddle 3. When the plug is inserted into the socket, the seat base 4 and its internal parts move to the rear end; the protrusion 31 of the seat rotation paddle 3 will slide into the notch 61, and then get stuck in the notch 61 to push the seat rotation paddle 3 to rotate inward. After rotating 90 degrees, the rotation direction is shown. Figure 7 .like Figure 8 As shown, the seat rotation paddle 3 is installed on the seat rotation sealing body, and the seat rotation sealing body 2 is also rotated 90 degrees. At this time, each seat through hole 21 is also rotated 90 degrees.

[0044] like Figure 5 , Figure 6 , Figure 7 In order to realize reliable rotational sealing and resetting of the head rotational sealing body 10, the present invention provides a head driving rod 5 in the socket, and also provides a reset tension spring 16 and a head rotation paddle 17 in the plug. The head driving rod is a structure similar to two tuning forks, and a notch 51 is provided on each of the two forks. During the insertion into the socket, the notch 51 also drives the protrusion C171 of the head rotation paddle 17 to realize a 90-degree rotation of the head rotation paddle 17 and the head rotational sealing body 10. Of course, in order to realize the simultaneous rotation of the rotational sealing bodies inside the plug and the socket, the position where the notch on the head driving rod and the protrusion of the head rotation paddle match is consistent with the position where the notch on the seat driving rod and the protrusion of the seat rotation paddle match.

[0045] like Figure 8As shown, after the rotation of the rotary seal body is completed, the plug continues to be inserted into the plug, and each electrical pin assembly 9 can pass through the seat through hole 21 and the head through hole 101 in sequence and cooperate with the electrical socket assembly to achieve circuit connection.

[0046] The process of unplugging the connector is the opposite of the above process. The small reset spring 7 and the reset push rod 8 are always against the protrusion 32 of the seat rotating paddle 3, and the reset tension spring 16 is always pulling the protrusion D172 of the head rotating paddle 17, which provides an additional reset force to urge the rotating seal body to return to the initial position. Compared with the reset only by the gap of the head drive rod 5 and the seat drive 6, an additional guarantee is added. As the plug is pulled out, the seat base 4 also returns to the initial position under the pressure of the large reset spring 200. In the whole process, the plug and the socket are the front end face of the base and the rotating seal body (2, 10) protruding a little from the front end face (0.2-0.5mm in this embodiment) first contact. After contact, moisture will be discharged. The rotating seal body is an elastic rubber part and its diameter is 0.03-0.1mm larger than the mounting hole set in the base. After being subjected to water pressure in water, it will continue to expand. Attached microorganisms, seaweed, debris, etc. will be squeezed at the edge of the base and will not be brought into the connector, so as not to cause the connector to stagnate or jam.

[0047] like Fig. 9 , Fig.10 As shown. The electric pin assembly 9 includes an insulating component 303, a vulcanized sealing body 304, and a pin core 305. The electric pin assembly 9 and the seat shell are sealed with a vulcanized rubber 304 seal or an O-ring seal. The electric jack assembly 12 includes an electric jack assembly tail 232, an electric jack assembly base 233, and an electric jack assembly crown spring 234. The electric jack assembly 12 is completely soaked in silicone oil and is not sealed. The electric jack assembly 12 and the electric pin assembly 9 use the electric jack assembly crown spring 234 to elastically contact and connect electrical signals, or use a slotted sleeve as a jack to achieve electrical connection. The electric pin assembly and the electric jack assembly can be plugged in and out by only using the seat shell and the head base to position them.

[0048] The overall drive rod (seat drive rod and head drive rod) in the socket drives the rotating paddle (seat rotating paddle and head rotating paddle) to rotate a certain angle (90±10 degrees in this embodiment), and the rotating paddle is fixedly installed on the rotating seal body, and the rotating seal body rotates a certain angle with the rotating paddle; at the same time, during the rotation process, the electrical plug assembly passes through the seat base, the socket and the rotating seal body in the plug (head rotating seal body, seat rotating seal body) in turn, and finally inserts the electrical jack assembly to achieve the connection of the electrical signal. When the plug is pulled out of the socket, the small reset spring and the reset tension spring drive the rotating paddle and the rotating seal body to return to their initial positions, and the large reset spring enables the seat base and its internal components to return to their initial positions.

[0049] The present invention is not limited to the above-mentioned specific implementation modes. A person skilled in the art can implement the present invention in various other specific implementation modes according to the contents disclosed in the present invention. The protection scope of the present invention shall be based on the definition of the claims.

Claims

1. A wet-plug electrical connector, comprising a socket and a plug, characterized in that: The socket housing (1) is provided with a seat base (4), a seat rotary seal (2), a reciprocating oil bag (201), and an electric plug pin assembly (9) in sequence from right to left; the seat base (4) is floatingly arranged in the seat housing (1), and a large return spring (200) is arranged between the seat base (4) and the bottom of the seat housing (1); the electric plug pin assembly is fixedly arranged at the bottom of the seat housing (1); a mounting hole is provided on the seat base (4) for mounting the seat rotary seal (2); the seat rotary seal (2) is a cylindrical structure, and is rotatably mounted in the mounting hole of the seat base (4) along the radial direction of the seat base (4), and is provided with seat through holes (21) having the same number as the electric plug pin assembly (9), and the seat through holes (21) are connected with the inner cavity of the seat base (4) when the seat through holes (21) are rotated to the axial position of the seat base (4), and the reciprocating oil bag (201) is arranged in the cavity of the seat base (4); The head shell (13) of the plug is provided with a head base (11), a head rotating seal (10), a head oil bag (14), an electric jack assembly (12), and a wire outlet seat (15) in sequence from left to right; the head base (11) is arranged in a cavity at the left end of the head shell (13); the head rotating seal (10) and the electric jack assembly (12) are arranged in the head base (11); the wire outlet seat (15) is arranged at the rightmost end of the head shell (13) and presses the head oil bag (14) onto the head shell (13); the head rotating seal (10) is provided with head through holes (101) of the same number as the electric jack assembly (12); and the head through holes (101) are connected to the inner cavity of the head base (11) when the head through holes (101) are rotated to the axial position of the head base (11); The seat rotating seal body (2) and the head rotating seal body (10) are respectively provided with a seat rotating paddle (3) and a head rotating paddle (17), and the socket is provided with a seat driving rod (6) and a head driving rod (5) for driving the seat rotating seal body (2) and the head rotating seal body (10) to rotate when the plug is inserted into the socket; The seat rotating paddle (3) is provided with a protrusion A (31) and a protrusion B (32); The seat driving rod (6) is provided with a notch B (61) on the inner side of the track along which the seat rotating paddle (3) rotates, and the protrusion A (31) of the seat rotating paddle (3) slides into the notch B (61) when the plug is inserted into the socket, thereby pushing the seat rotating sealing body (2) to rotate; The head driving rod (5) is a tuning fork-like structure, and a notch A (51) is provided on each of the two forks. When the plug is inserted into the socket, the notch drives the protrusion C (171) of the head rotating paddle (17) to realize the rotation of the head rotating sealing body (10); the position where the notch A (51) on the head driving rod (5) cooperates with the protrusion C (171) of the head rotating paddle (17) is consistent with the position where the notch B (61) on the seat driving rod cooperates with the protrusion A (31) of the seat rotating paddle (3); The plug is also provided with a reset spring (16), one end of which is connected to a protrusion D (172) of the head rotating paddle (17); the socket is provided with a small reset spring (7) and a reset push rod (8), and the small reset spring (7) and the reset push rod (8) are connected to a protrusion B (32) of the seat rotating paddle (3).

2. A wet-pluggable electrical connector according to claim 1, characterized in that: The seat driving rod (6) and the head driving rod (5) respectively drive the seat rotating paddle (3) and the head rotating paddle (17) to rotate 80° to 100°.

3. A wet-pluggable electrical connector according to claim 2, characterized in that: The head rotating paddle (17) is provided with a protrusion C (171) and a protrusion D (172).

4. A wet-pluggable electrical connector according to claim 3, characterized in that: The sealing cavity formed between the seat rotating seal body (2), the reciprocating oil bag (201) and the seat base (4) is filled with insulating oil; the space between the head base (11) and the head oil bag (14) is filled with insulating oil, and the electrical jack assembly (12) is immersed therein.

5. A wet-pluggable electrical connector according to claim 4, characterized in that: The head oil bag (14) adopts a wave-shaped structure in radial direction; the cavity of the reciprocating oil bag (201) is connected to the outside.

6. A wet-pluggable electrical connector according to claim 1, characterized in that: The outer layer of the seat rotary seal body (2), the outer layer of the head rotary seal body (10), the reciprocating oil bag (201) and the head oil bag (14) are all made of rubber material; the diameter of the seat rotary seal body (2) and the head rotary seal body (10) is 0.03-0.1 mm larger than the mounting hole.

7. A wet-pluggable electrical connector according to claim 1, characterized in that: The electrical plug pin assembly (9) comprises an insulating component (303), a vulcanized sealing body (304), and a plug pin core (305); the electrical jack assembly (12) comprises an electrical jack assembly tail (232), an electrical jack assembly base (233), and an electrical jack assembly crown spring (234); the electrical jack assembly (12) is completely immersed in silicone oil and is not sealed; the electrical jack assembly (12) and the electrical plug pin assembly (9) are elastically contacted and connected to electrical signals by using the electrical jack assembly crown spring (234).

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