A rubber-plastic connector capable of wet plugging and unplugging under power

Abstract

The present invention discloses a rubber-plastic connector capable of wet plugging and unplugging with electricity, comprising a tail rubber-plastic component and an end rubber-plastic component, wherein the tail rubber-plastic component is plugged in at a side opposite to the end rubber-plastic component, and a first rubber cable and a second rubber cable are respectively installed inside the side of the tail rubber-plastic component and the end rubber-plastic component that are away from each other. The present invention pre-dots the plug pin and the transfer contact piece through the tail rubber-plastic component, the end rubber-plastic component and the connecting sleeve, applies thrust, and the end rubber-plastic component drives the partition plate to approach the tail rubber-plastic component by squeezing insulating oil, so that the end of the plug pin fits and connects with the end groove of the transfer contact piece, so that the contact series connection between the plug pin and the transfer contact piece is met to realize conductivity, and the underwater live plugging and unplugging is completed. The connector is sealed by insulating oil through structural matching, and stable transmission is realized by oil pressure pushing, so as to avoid water ingress or moisture between the first rubber cable and the second rubber cable, resulting in power interruption and leakage, and improve the safety of underwater live wet plugging and unplugging operation.

Description

Technical Field

[0001] The invention relates to the field of electric connectors, and in particular to a rubber-plastic connector capable of wet plugging and unplugging while powered on. Background Art

[0002] The rubber-plastic electrical connector adopts direct plug-in docking, with fewer types and quantities of parts and a simple structure. It adopts rubber-plastic mold vulcanization processing, with small size, light weight, wide range of working depth, strong resistance to deep water environment, excellent watertight performance, etc. It adopts universal and standardized structural design, with short cycle, low cost, fewer assembly process links, greatly reduced links that are prone to failure, high reliability, and is suitable for underwater lighting, underwater detection, underwater robots and other engineering systems.

[0003] For example, the invention patent application with application number 202210723154.8 and titled "An underwater pre-tightening device for a rubber-plastic watertight electrical connector" discloses a guide sleeve, a compression spring, and a pressure plate. The guide sleeve includes an upper and a lower guide sleeve. The upper guide sleeve includes a connector accommodating chamber, a first step, and a compression spring accommodating chamber in sequence. The lower guide sleeve includes a compression spring accommodating chamber and a second step in sequence. The two ends of the compression spring are respectively located in the compression spring accommodating chambers of the upper and lower guide sleeves. The outer diameter of the upper guide sleeve is smaller than the inner diameter of the compression spring accommodating chamber of the lower guide sleeve. The rear cable of the connector socket passes through the upper guide sleeve, the compression spring, the lower guide sleeve, and the pressure plate in sequence. The pressure plate is fixed on the underwater platform, fixing the upper guide sleeve, the compression spring, and the lower guide sleeve to the socket, and the compression spring is in an uncompressed state. The device realizes the reliable connection and separation of the rubber-plastic watertight electrical connector in a complex underwater environment, and meets a certain range of axial and radial displacements. It has a simple structure and strong versatility, and can improve the safety and reliability of underwater equipment disconnection and separation.

[0004] However, when the above scheme is actually used, the inside of the rubber-plastic watertight electrical connector is not sealed, and there will be water resistance during the compression and docking process. In addition, water directly contacts the internal structure of the rubber-plastic watertight electrical connector, which can easily cause corrosion of the connector. The service life and stability cannot be guaranteed. If water enters the connector or it is exposed to moisture, it may also cause power interruption and leakage problems. Safety needs to be urgently addressed.

[0005] Therefore, it is necessary to invent a rubber-plastic connector that can be wet-plugged and plugged with electricity to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a rubber-plastic connector that can be wet-plugged and plugged in under power, which utilizes an internal tight structure and cooperates with insulating oil to achieve sealing, and is docked and assembled under the action of oil pressure, thereby ensuring stable transmission under a sealed condition, avoiding power interruption and leakage problems caused by water ingress or damp environment between the first rubber cable and the second rubber cable, and improving the safety of underwater wet-plugging operations to solve the above-mentioned deficiencies in the technology.

[0007] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a rubber-plastic connector that can be wet-plugged and plugged with electricity, comprising a rear rubber-plastic component and an end rubber-plastic component, wherein the rear rubber-plastic component is plugged in at a side opposite to the end rubber-plastic component, and a first rubber cable and a second rubber cable are respectively installed inside the side of the rear rubber-plastic component and the end rubber-plastic component that are away from each other, a connecting sleeve is provided on the outside of the connection between the rear rubber-plastic component and the end rubber-plastic component, a set screw is passed through and threadedly connected to the connecting sleeve, and the rear rubber-plastic component and the end rubber-plastic component are combined through the connecting sleeve and fixed with the set screw;

[0008] The tail rubber-plastic component includes a first rubber matrix, a plug pin, a second spring and an insulating top column. The plug pin is crimped on one end of the core wire of the first rubber cable, and the first rubber matrix is ​​injection molded on the outside of the connection mechanism between the first rubber cable and the plug pin by rubber vulcanization. The end of the plug pin away from the first rubber cable is provided with a concave groove, and an insulating top column is penetrated and slidably connected to the inner side of the concave groove, and the insulating top column is prevented from falling out by a closing structure provided at the end of the concave groove, and the second spring is movably installed in the concave groove;

[0009] The end rubber-plastic component includes a connecting screw sleeve, a second rubber matrix, a support sleeve, a transfer contact and a third rubber matrix. The transfer contact is crimped on one end of the core wire of the second rubber cable, and the third rubber matrix is ​​injection molded on the outside of the connection mechanism between the transfer contact and the second rubber cable by rubber vulcanization. The transfer contact is installed on the inner axial part of the support sleeve, and the second rubber matrix is ​​injection molded on the outside of the connection mechanism of the transfer contact by rubber vulcanization. The connecting screw sleeve is installed on the outside of the support sleeve and the second rubber matrix, and the inner side of the connecting screw sleeve is threadedly connected with a screw ring, the second rubber matrix and the support sleeve are locked in the connecting screw sleeve by the screw ring, and a plurality of second O-rings are arranged on the inner side of the connecting screw sleeve to achieve sealing with the support sleeve and the second rubber matrix;

[0010] A first spring and a spacer are provided between the tail rubber-plastic component and the end rubber-plastic component. The first spring supports the first rubber matrix and the spacer and maintains a preload. The spacer, the first rubber matrix and the connecting screw sleeve are sealed by a plurality of first O-rings, and the enclosed space between the spacer, the support sleeve, the first O-ring and the second O-ring is filled with insulating oil.

[0011] As a preferred solution of the present invention, the cross-sectional shape of the outer wall of the connecting sleeve is set to be a concave shape, a convex ring is set at the end of the first rubber matrix, and the convex ring is movably connected to the inner side of the connecting sleeve, and the end of the connecting sleeve away from the first rubber matrix is ​​sleeved on the outer side of the connecting screw sleeve;

[0012] The outer wall of the connecting screw sleeve is provided with a plurality of positioning holes distributed in a circular array, and the positioning holes are distributed in a one-to-one correspondence with the set screws.

[0013] As a preferred solution of the present invention, the plug pin and the transfer contact are both made of metal copper material, and the plug pin and the transfer contact are coaxially distributed;

[0014] A convex groove is provided on one side of the transfer contact piece close to the plug pin, and the concave groove is coaxially distributed with the convex groove.

[0015] As a preferred solution of the present invention, the outer sides of the plug pin and the transfer contact are both provided with concave arc openings, and convex arc blocks are provided at positions of the first rubber matrix and the second rubber matrix corresponding to the concave arc openings, and the convex arc blocks are clamped inside the concave arc openings.

[0016] As a preferred solution of the present invention, the second rubber matrix is ​​clamped and tightly connected with the support sleeve, and a through hole communicating with the convex groove is penetrated at the axis of the support sleeve;

[0017] The inner wall of the connecting screw sleeve is integrally provided with a stopper for limiting the end position of the support sleeve, and the screw ring is threadedly locked on a side of the second rubber matrix away from the support sleeve.

[0018] As a preferred solution of the present invention, the first O-ring and the second O-ring are both made of rubber material;

[0019] The support sleeve has first openings on both inner and outer side walls thereof that match the first O-ring, the partition plate has first openings on both inner and outer side walls thereof that match the first O-ring, and the inner wall of the connecting screw sleeve and the overlapping portion of the second rubber matrix and the support sleeve have second openings on them that match the second O-ring.

[0020] As a preferred solution of the present invention, a liquid injection port is installed on the connecting screw sleeve, and the bottom end of the liquid injection port is connected to the filling area of ​​the insulating oil, and a sealing plug is provided on the outside of the liquid injection port.

[0021] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0022] The pin and the transfer contact are pre-jointed by the tail rubber-plastic component, the end rubber-plastic component and the connecting sleeve, and thrust is applied. The end rubber-plastic component drives the spacer plate to approach the tail rubber-plastic component by squeezing the insulating oil, and the positioning structure is precisely positioned to make the end of the pin fit and connect with the end groove of the transfer contact, so that the contact series connection between the pin and the transfer contact is achieved to realize conductivity, and the underwater live plugging is completed. The connector is sealed by the structure and the insulating oil, and the oil pressure is pushed to achieve stable transmission, so as to avoid the power interruption and leakage caused by water ingress or damp environment between the first rubber cable and the second rubber cable, and improve the safety of underwater live wet plugging and unplugging operation;

[0023] By loosening the set screw, the first spring rebounds quickly, causing the tail rubber-plastic component and the first rubber cable end connected thereto to retreat instantly, and cooperating with the second spring to push the insulating top column, so that the pin is separated from the transfer contact piece to achieve power off. This is safe and efficient, and can be operated underwater. The separation can be continued to disengage the end rubber-plastic component from the corresponding tail rubber-plastic component to complete the separation work. The product has a simple structure, high reliability, simple and quick operation, and is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure (plugged state) of the present invention;

[0026] Figure 2 For the present invention Figure 1 A partial cross-sectional view of the structure shown in;

[0027] Figure 3 A partial cross-sectional view of the tail rubber-plastic component provided by the present invention;

[0028] Figure 4 A partial cross-sectional view of the end rubber-plastic component provided by the present invention;

[0029] Figure 5 A partial cross-sectional view of the connecting screw sleeve provided by the present invention;

[0030] Figure 6 A three-dimensional diagram of a partition plate provided by the present invention;

[0031] Figure 7 A three-dimensional diagram of the transfer contact provided by the present invention.

[0032] Description of reference numerals:

[0033] Tail rubber-plastic component-1; end rubber-plastic component-2; connecting sleeve-3; first spring-4; spacer plate-5; first O-ring-6; set screw-7; insulating oil-8;

[0034] First rubber cable-11; first rubber matrix-12; pin-13; second spring-14; insulating top column-15; concave groove-16;

[0035] Connecting screw sleeve 21; second rubber matrix 22; supporting sleeve 23; transition contact piece 24; second O-ring 25; screw ring 26; third rubber matrix 27; second rubber cable 28; positioning hole 29; convex groove 210; stopper 211; convex ring 212; concave arc opening 213; first circle opening 214; second circle opening 215; liquid injection port 216; sealing plug 217. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] The present invention provides Figure 1-7 A rubber-plastic connector that can be wet-plugged and plugged with electricity shown in the figure comprises a rear rubber-plastic component 1 and an end rubber-plastic component 2. The rear rubber-plastic component 1 is plugged into the side opposite to the end rubber-plastic component 2. The first rubber cable 11 and the second rubber cable 28 are installed inside the side of the rear rubber-plastic component 1 and the end rubber-plastic component 2 that are away from each other. A connecting sleeve 3 is provided on the outside of the connection between the rear rubber-plastic component 1 and the end rubber-plastic component 2. A set screw 7 is passed through and threadedly connected to the connecting sleeve 3. The rear rubber-plastic component 1 and the end rubber-plastic component 2 are combined through the connecting sleeve 3 and fixed with the set screw 7, thereby realizing a stable combination of the rubber-plastic connector. In the combined state, the first rubber cable 11 and the second rubber cable 28 can maintain electrical connection;

[0038] The tail rubber-plastic component 1 includes a first rubber matrix 12, a pin 13, a second spring 14 and an insulating top column 15. The pin 13 is crimped on one end of the core wire of the first rubber cable 11. The first rubber matrix 12 is injection-molded on the outside of the connection mechanism between the first rubber cable 11 and the pin 13 by rubber vulcanization. The end of the pin 13 away from the first rubber cable 11 is provided with a concave groove 16. The inner side of the concave groove 16 is penetrated and slidably connected with the insulating top column 15, and the closing structure provided at the end of the concave groove 16 prevents the insulating top column 15 from falling out. The second spring 14 is movably installed in the concave groove 16 to tighten the insulating top column 15.

[0039] The end rubber-plastic component 2 includes a connecting screw sleeve 21, a second rubber matrix 22, a support sleeve 23, a transfer contact 24 and a third rubber matrix 27. The transfer contact 24 is crimped on one end of the core wire of the second rubber cable 28. The third rubber matrix 27 is injection molded on the outside of the connection mechanism between the transfer contact 24 and the second rubber cable 28 by rubber vulcanization. The transfer contact 24 is installed on the inner axial part of the support sleeve 23. The second rubber matrix 22 is injection molded on the outside of the connection mechanism of the transfer contact 24 by rubber vulcanization. The connecting screw sleeve 21 is installed on the outside of the support sleeve 23 and the second rubber matrix 22. The inner side of the connecting screw sleeve 21 is threadedly connected with a screw ring 26. The second rubber matrix 22 and the support sleeve 23 are locked in the connecting screw sleeve 21 through the screw ring 26. A plurality of second O-rings 25 are arranged on the inner side of the connecting screw sleeve 21 to achieve sealing with the support sleeve 23 and the second rubber matrix 22.

[0040] A first spring 4 and a spacer 5 are provided between the tail rubber-plastic component 1 and the end rubber-plastic component 2. The first spring 4 supports the first rubber matrix 12 and the spacer 5 and maintains a preload. The spacer 5 is sealed with the first rubber matrix 12 and the connecting screw sleeve 21 through multiple first O-rings 6. The enclosed space between the spacer 5, the support sleeve 23, the first O-ring 6 and the second O-ring 25 is filled with insulating oil 8.

[0041] Furthermore, in the above technical solution, the cross-sectional shape of the outer wall of the connecting sleeve 3 is set to be a concave shape, and a convex ring 212 is provided at the end of the first rubber matrix 12, and the convex ring 212 is movably connected to the inner side of the connecting sleeve 3, and one end of the connecting sleeve 3 away from the first rubber matrix 12 is sleeved on the outer side of the connecting screw sleeve 21;

[0042] As an embodiment of the present invention, an inner bayonet is provided on the inner side of one end of the connecting sleeve 3, and the inner bayonet matches the convex ring 212, so that the connecting sleeve 3 slides inside the connecting sleeve 3 and cannot fall out, and sealing gaskets are sleeved at the connection between the two sides of the connecting sleeve 3 and the first rubber matrix 12 and the connecting screw sleeve 21 and the outer side of the set screw 7 to reduce the corrosion and influence of water on the internal structure of the rubber-plastic connector;

[0043] The outer wall of the connecting screw sleeve 21 is provided with a plurality of retaining holes 29 distributed in a circular array. The retaining holes 29 are distributed in a one-to-one correspondence with the set screws 7 to improve the connection stability in the assembled state.

[0044] Furthermore, in the above technical solution, the pin 13 and the transfer contact 24 are both made of metal copper material, the support sleeve 23 and the insulating top column 15 are both made of plastic material, and the pin 13 and the transfer contact 24 are coaxially distributed;

[0045] A convex groove 210 is provided on the side of the adapter contact 24 close to the pin 13, and the concave groove 16 is coaxially distributed with the convex groove 210, ensuring that the insulating top column 15 can fit into the core groove at the end of the convex groove 210 and be inserted into the connection, thereby playing a role in precise positioning, until the end of the pin 13 fits into the end groove of the adapter contact 24 and is connected, satisfying the contact series connection between the pin 13 and the adapter contact 24 to achieve conductivity.

[0046] Furthermore, in the above technical solution, a concave arc opening 213 is provided on the outer side of the pin 13 and the transfer contact 24, and a convex arc block is provided at the position of the first rubber matrix 12 and the second rubber matrix 22 corresponding to the concave arc opening 213, and the convex arc block is clamped in the concave arc opening 213. The convex arc block cooperates with the concave arc opening 213 to improve the connection strength between the first rubber matrix 12 and the second rubber matrix 22 and the pin 13 and the transfer contact 24, thereby avoiding the problem of circuit interruption caused by structural looseness and falling off.

[0047] Furthermore, in the above technical solution, the second rubber matrix 22 is engaged with the support sleeve 23 and is tightly connected, and a through hole communicating with the convex groove 210 is penetrated at the axis of the support sleeve 23 to facilitate the insulating top column 15 to pass through;

[0048] A stopper 211 is integrally provided on the inner wall of the connecting screw sleeve 21 for limiting the end position of the support sleeve 23. The screw ring 26 is threadedly locked on the side of the second rubber matrix 22 away from the support sleeve 23. The second rubber matrix 22 and the support sleeve 23 fit tightly together, and the stopper 211 is used for end blocking. The screw ring 26 is used to compress the combination on the other side to facilitate the installation of the second O-ring 25 and improve the stability of the combined structure.

[0049] Further, in the above technical solution, the first O-ring 6 and the second O-ring 25 are both made of rubber material, which is conducive to achieving the sealing of the isolation area between the first O-ring 6 and the second O-ring 25;

[0050] A first ring opening 214 matching the first O-ring 6 is provided on the inner and outer side walls of the support sleeve 23, and a first ring opening 214 matching the first O-ring 6 is provided on the inner and outer side walls of the partition plate 5. A second ring opening 215 matching the second O-ring 25 is provided on the inner wall of the connecting screw sleeve 21 and at the overlapping portion of the second rubber matrix 22 and the support sleeve 23. The first ring opening 214 and the second ring opening 215 are respectively used to install the first O-ring 6 and the second O-ring 25. Before installation, the first O-ring 6 and the second O-ring 25 are first inserted into the corresponding ring opening grooves to avoid the problem of O-ring deviation due to friction during assembly.

[0051] Furthermore, in the above technical solution, a liquid injection port 216 is installed on the connecting screw sleeve 21, and the bottom end of the liquid injection port 216 is connected to the filling area of ​​the insulating oil 8. A sealing plug 217 is provided on the outer side of the liquid injection port 216. The insulating oil 8 is injected into the filling area through the liquid injection port 216, and the air in the area is evacuated before injection, and then the oil is injected to avoid bubbles or cavities. After the oil injection is completed, the sealing plug 217 is used to close the liquid injection port 216 to achieve stable transmission driven by oil pressure, and it is beneficial to ensure the sealing inside the rubber-plastic connector, avoiding water ingress or power interruption and leakage problems between the first rubber cable 11 and the second rubber cable 28 in a humid environment.

[0052] When in use, the live wet pluggable rubber-plastic connector provided by the present invention:

[0053] First, assemble the rubber-plastic connector, pre-join the first rubber cable 11 with the first rubber matrix 12 and the pin 13 and the second rubber cable 28 with the second rubber matrix 22 and the transition contact 24, respectively install the tail rubber-plastic component 1 and the end rubber-plastic component 2 at the ends of the above structure, and sleeve the connecting sleeve 3 on the outer side of the connection between the tail rubber-plastic component 1 and the end rubber-plastic component 2;

[0054] When the rubber-plastic connector is connected under water with electricity, the end rubber-plastic component 2 is plugged into the corresponding tail rubber-plastic component 1 and the surrounding water is discharged to achieve connection and meet the sealing function; as the connector continues to be plugged in, the end rubber-plastic component 2 drives the spacer 5 to approach the tail rubber-plastic component 1 by squeezing the insulating oil 8, compressing the first spring 4 to make it continue to close, and the insulating top column 15 can fit the core groove at the end of the convex groove 210 and dock and insert, accurately positioning until the end of the pin 13 fits and connects with the end groove of the transfer contact 24, so that the contact series connection between the pin 13 and the transfer contact 24 is achieved to achieve conductivity, and the underwater live plugging is completed. At this time, tightening the set screw 7 can meet the stable working requirements;

[0055] When the connector is separated, the set screw 7 is loosened so that the end of the set screw 7 cannot squeeze the connecting screw sleeve 21. At this time, the first spring 4 rebounds quickly, so that the tail rubber-plastic component 1 and the end of the first rubber cable 11 connected thereto instantly retreat, and cooperates with the second spring 14 to push the insulating top column 15, so that the pin 13 is separated from the transfer contact 24, and power is cut off. It is safe and efficient, with high sealing performance, and can be operated underwater. It can also continue to separate, and the end rubber-plastic component 2 is disengaged from the corresponding tail rubber-plastic component 1 to complete the separation work.

[0056] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A live wet pluggable rubber-plastic connector, comprising a rear rubber-plastic component (1) and an end rubber-plastic component (2), wherein the rear rubber-plastic component (1) is plugged into the side opposite to the end rubber-plastic component (2), and a first rubber cable (11) and a second rubber cable (28) are respectively installed inside the side of the rear rubber-plastic component (1) and the end rubber-plastic component (2) away from each other, characterized in that: A connecting sleeve (3) is provided on the outside of the connection between the tail rubber-plastic component (1) and the end rubber-plastic component (2), a set screw (7) passes through and is threadedly connected to the connecting sleeve (3), and the tail rubber-plastic component (1) and the end rubber-plastic component (2) are combined through the connecting sleeve (3) and fixed with the set screw (7); The tail rubber-plastic component (1) comprises a first rubber matrix (12), a plug pin (13), a second spring (14) and an insulating top column (15); the plug pin (13) is crimped onto one end of the core wire of the first rubber cable (11), and the first rubber matrix (12) is injection-molded on the outside of the connection mechanism between the first rubber cable (11) and the plug pin (13) by rubber vulcanization; the end of the plug pin (13) away from the first rubber cable (11) is provided with a concave groove (16); the inner side of the concave groove (16) is penetrated by and slidably connected with the insulating top column (15); and a closing structure provided at the end of the concave groove (16) prevents the insulating top column (15) from falling out; the second spring (14) is movably installed in the concave groove (16); The end rubber-plastic component (2) comprises a connecting screw sleeve (21), a second rubber matrix (22), a support sleeve (23), a transfer contact piece (24) and a third rubber matrix (27); the transfer contact piece (24) is crimped onto one end of the core wire of the second rubber cable (28), and the third rubber matrix (27) is injection-molded on the outside of the connection mechanism between the transfer contact piece (24) and the second rubber cable (28) by means of rubber vulcanization; the transfer contact piece (24) is mounted on the inner axial center portion of the support sleeve (23), and the second rubber matrix ( 22) is injection molded on the outside of the connection mechanism of the transfer contact piece (24) by rubber vulcanization, the connecting screw sleeve (21) is installed on the outside of the support sleeve (23) and the second rubber matrix (22), and the inner side of the connecting screw sleeve (21) is threadedly connected with a screw ring (26), the second rubber matrix (22) and the support sleeve (23) are locked in the connecting screw sleeve (21) through the screw ring (26), and a plurality of second O-rings (25) are arranged on the inner side of the connecting screw sleeve (21) to achieve sealing with the support sleeve (23) and the second rubber matrix (22); A first spring (4) and a spacer plate (5) are provided between the tail rubber-plastic component (1) and the end rubber-plastic component (2); the first spring (4) supports the first rubber matrix (12) and the spacer plate (5) and maintains a preload; a seal is achieved between the spacer plate (5), the first rubber matrix (12) and the connecting screw sleeve (21) via a plurality of first O-rings (6); and a closed space between the spacer plate (5), the support sleeve (23), the first O-ring (6) and the second O-ring (25) is filled with insulating oil (8).

2. The live wet pluggable rubber-plastic connector according to claim 1, characterized in that: The cross-sectional shape of the outer wall of the connecting sleeve (3) is set to be a concave shape, the end of the first rubber matrix (12) is provided with a convex ring (212), and the convex ring (212) is movably connected to the inner side of the connecting sleeve (3), and the end of the connecting sleeve (3) away from the first rubber matrix (12) is sleeved on the outer side of the connecting screw sleeve (21); The outer wall of the connecting screw sleeve (21) is provided with a plurality of locking holes (29) distributed in a circular array, and the locking holes (29) are distributed in a one-to-one correspondence with the set screws (7).

3. The live wet pluggable rubber-plastic connector according to claim 1, characterized in that: The plug pin (13) and the transfer contact piece (24) are both made of metal copper material, and the plug pin (13) and the transfer contact piece (24) are coaxially distributed; A convex groove (210) is provided on a side of the transfer contact piece (24) close to the plug pin (13), and the concave groove (16) and the convex groove (210) are coaxially distributed.

4. The live wet pluggable rubber-plastic connector according to claim 1, characterized in that: The outer sides of the plug pin (13) and the transfer contact piece (24) are both provided with concave arc openings (213), and convex arc blocks are provided at positions of the first rubber matrix (12) and the second rubber matrix (22) corresponding to the concave arc openings (213), and the convex arc blocks are clamped inside the concave arc openings (213).

5. The live wet pluggable rubber-plastic connector according to claim 1, characterized in that: The second rubber matrix (22) is engaged with and tightly connected to the support sleeve (23), and a through hole communicating with the convex groove (210) is penetrated through the axis of the support sleeve (23); The inner wall of the connecting screw sleeve (21) is integrally provided with a stopper (211) for limiting the end position of the support sleeve (23), and the screw ring (26) is threadedly locked on a side of the second rubber base (22) away from the support sleeve (23).

6. The live wet pluggable rubber-plastic connector according to claim 5, characterized in that: The first O-ring (6) and the second O-ring (25) are both made of rubber material; The support sleeve (23) has first ring openings (214) on both inner and outer side walls thereof, which are matched with the first O-ring (6); the spacer plate (5) has first ring openings (214) on both inner and outer side walls thereof, which are matched with the first O-ring (6); and the inner wall of the connecting screw sleeve (21) and the overlapping portion of the second rubber matrix (22) and the support sleeve (23) have second ring openings (215) on both inner walls thereof, which are matched with the second O-ring (25).

7. The live wet pluggable rubber-plastic connector according to claim 1, characterized in that: The connecting screw sleeve (21) is provided with a liquid injection port (216), and the bottom end of the liquid injection port (216) is in communication with a filling area of ​​the insulating oil (8), and a sealing plug (217) is provided on the outside of the liquid injection port (216).

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