Connector module and underwater connector

Abstract

This invention discloses a connector module and an underwater connector, including a male end sealing unit and a male pin protection unit. The male end sealing unit includes a male pin assembly, which comprises a male pin, a front sealing sleeve, and a rear sealing sleeve. The male pin has a male pin connecting portion. The male pin protection unit includes a male pin sealing body, which comprises a front sealing body, a rear sealing body, and a sealing cylinder. The front and rear sealing bodies enclose a receiving cavity, and the sealing cylinder is located within the receiving cavity. The male pin assembly is inserted into the male pin sealing body. The front sealing body and the front sealing sleeve form a front-end seal, and the rear sealing body and the rear sealing sleeve form a rear-end seal. A connecting cavity is formed between the sealing cylinder and the male pin assembly. The insulating oil in the connecting cavity completely covers the male pin connecting portion. The male pin connecting portion of this invention is isolated from the outside environment, ensuring that the connector module and the female connector remain in a sealed and insulated state during insertion or separation, enabling stable live insertion and removal even in harsh underwater environments.

Description

Technical Field

[0001] This invention relates to the field of underwater connector technology, specifically to a connector module and an underwater connector. Background Technology

[0002] Existing underwater connectors for deep-sea environments generally only use an oil bladder-filled pressure balance mode to protect one end of the connector, while the male end of the connector is exposed to the medium. Currently, most connectors use an additional cover on the exposed end face of the connector. When mating is required, the cover is removed and then mating is achieved.

[0003] Existing underwater connectors have the following main problems: When the underwater connector is separated, the male pin of the connector is exposed to the medium. Although the male pin is treated with electroplating or anodizing to have anti-corrosion and weather-resistant properties, in the turbid and harsh underwater environment, some medium will still settle or organisms will entangle on the male pin. This will seriously affect the contact electrical performance during connection. Moreover, when a cover is put on, it will further increase the difficulty of connection and make the operation more cumbersome and inconvenient. Summary of the Invention

[0004] The present invention aims to provide a connector module and an underwater connector to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: a connector module, comprising a male end shell, a male end sealing unit, a male pin protection unit, and an elastic reset component;

[0006] The male pin protection unit is installed inside the front end of the male terminal housing, the male terminal sealing unit is installed inside the rear end of the male terminal housing, and the elastic reset member is located inside the male terminal housing between the male terminal sealing unit and the male pin protection unit, for the male pin protection unit to slide and reset.

[0007] The male end sealing unit includes a male needle seat and multiple male needle assemblies disposed on the male needle seat. The male needle assembly includes a male needle, a front sealing sleeve and a rear sealing sleeve. The male needle has a male needle connecting part. The front sealing sleeve and the rear sealing sleeve are respectively fitted around the male needle at the front and rear ends of the corresponding male needle connecting part.

[0008] The male needle protection unit includes multiple male needle sealing bodies, including a front sealing body, a rear sealing body and a sealing cylinder. The front sealing body and the rear sealing body enclose and form a receiving cavity, and the sealing cylinder is sealed and disposed within the receiving cavity.

[0009] The front end seal of the male needle assembly is inserted inside the male needle sealing body. The front sealing body of the male needle sealing body and the front sealing sleeve of the male needle assembly form a front end seal. The rear sealing body of the male needle sealing body and the rear sealing sleeve of the male needle assembly form a rear end seal. A connecting cavity is formed between the sealing cylinder and the male needle assembly. The connecting cavity is filled with insulating oil, and the insulating oil completely covers the male needle connection part.

[0010] In one embodiment, the sealing cylinder has a hollow channel, the front sealing body forms a front sealing cavity corresponding to the front end of the hollow channel, the rear sealing body forms a rear sealing cavity corresponding to the rear end of the hollow channel, and the front end of the male needle assembly passes through the rear sealing cavity, the hollow channel, and the front sealing cavity in sequence to be sealed and inserted into the male needle sealing body. The front sealing body of the male needle sealing body and the front sealing sleeve of the male needle assembly form a front sealing at the front sealing cavity, and the rear sealing body of the male needle sealing body and the rear sealing sleeve of the male needle assembly form a rear sealing at the rear sealing cavity. The male needle connection part is located in the hollow channel.

[0011] In one embodiment, a stepped portion is formed on the outer wall of the front end of the sealing cylinder, and a stepped mating portion is formed on the inner wall of the rear end of the front sealing body. The stepped portion and the stepped mating portion form a limiting fit. An annular limiting groove is formed on the inner side of the rear sealing body. The rear end of the sealing cylinder forms a limiting fit with the annular limiting groove. The inner wall of the front end of the rear sealing body is sealed to the outer wall of the rear end of the front sealing body. A clamp is fitted around the periphery of the rear sealing body at the position corresponding to the position of the front sealing body and the sealing cylinder.

[0012] In one embodiment, the sealing cylinder is provided with multiple liquid passage holes, and the connecting cavity and the receiving cavity are connected through the liquid passage holes.

[0013] In one embodiment, the male needle protection unit further includes a front sealing seat and a rear sealing seat. The front sealing seat and the rear sealing seat are packaged together to form multiple sets of receiving cavities. Each male needle sealing body is inserted into a set of receiving cavities. A buffer cavity is formed between the outer side of the male needle sealing body and the receiving cavity. Both the front sealing seat and the rear sealing seat are provided with multiple pressure balance holes. The buffer cavity is connected to the outside through the pressure balance holes.

[0014] In one embodiment, the front sealing seat is further provided with a plurality of drainage through holes, and the male end housing is provided with a drainage hole. The male end housing is cylindrical and has an inner cavity formed inside. The drainage through holes and the drainage hole are interconnected through the inner cavity of the male end housing.

[0015] In one embodiment, a limiting step is provided on the inner front side of the male end housing, and a limiting boss is formed on the outer circumferential side of the front sealing seat of the male needle protection unit. The limiting step blocks and limits the limiting boss, so that the male needle protection unit can slide axially back and forth within the male end housing.

[0016] In one embodiment, the male needle assembly further includes an insulating layer on the surface of the male needle. The male needle assembly is sintered and encapsulated on the male needle seat. An end-face sealing layer is formed on the end face of the encapsulated male needle seat. The end-face sealing layer is completely fused and connected with the insulating layer on the male needle corresponding to the end face of the male needle seat. A sealing block is sintered between the periphery of the male needle assembly and the male needle seat to form a sealing block.

[0017] The present invention also provides an underwater connector, comprising a female connector end and a male connector end that cooperate with each other, wherein the male connector end is any of the connector modules described above.

[0018] In one embodiment, during the mating connection process between the female connector end and the male connector end, the male pin protection unit slides backward, thereby causing the front sealing body and the rear sealing body to slide backward on the male pin sleeve. The male pin connection part enters the female pin sealing cavity from the male pin sealing body. During this process, both ends of the male pin sealing body are always in a sealed and insulated state.

[0019] During the separation process between the female and male connector terminals, the male pin protection unit slides forward under the action of the elastic reset element, which in turn drives the front and rear sealing bodies to slide forward on the male pin assembly. The male pin connection part retracts from the female pin sealing cavity into the male pin sealing body. During this process, both ends of the male pin sealing body remain in a sealed and insulated state.

[0020] The present invention has the following beneficial effects:

[0021] (1) The present invention includes a connector module comprising a male end housing, a male end sealing unit, a male pin protection unit, and an elastic reset member. The male end sealing unit includes a male pin seat and multiple male pin assemblies. Each male pin assembly includes a male pin, a front sealing sleeve, and a rear sealing sleeve. The male pin has a male pin connecting portion. The male pin protection unit includes multiple male pin sealing bodies, each including a front sealing body, a rear sealing body, and a sealing cylinder. The front sealing body and the rear sealing body enclose a receiving cavity, and the sealing cylinder is sealed within the receiving cavity. The front end of the male pin assembly is inserted into the male pin sealing body. The front sealing body and the front sealing sleeve form a front end seal, and the rear sealing body and the rear sealing sleeve form a rear end seal. The sealing cylinder and the male pin assembly form a connecting cavity, which is filled with insulating oil. The insulating oil completely covers the male pin connection part, ensuring that the connector module and the connector female end are always in a sealed and insulated state during the insertion or separation process. Each male pin seal protects one male pin independently, which can isolate the male pin connection part from the outside world and prevent the external medium from settling or the organisms from getting entangled on the male pin connection part. This achieves efficient protection of the male pin and greatly improves the insulation resistance between the male pins, thereby improving the stability of the connector module 1 for live insertion and removal in harsh underwater environments.

[0022] (2) The connector module of the present invention is easy to operate and will not increase the difficulty of connection. At the same time, it adopts multiple unit combinations, and different units can be replaced according to different connection requirements, which facilitates disassembly, replacement and maintenance, and improves the interchangeability and versatility of the product. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the connector module according to Embodiment 1 of the present invention;

[0024] Figure 2 This is a cross-sectional view of the connector module according to Embodiment 1 of the present invention;

[0025] Figure 3 This is a schematic diagram of the male end sealing unit of Embodiment 1 of the present invention;

[0026] Figure 4 This is a schematic diagram of the male pin protection unit according to Embodiment 1 of the present invention;

[0027] Figure 5 This is a cross-sectional view of the male pin protection unit of Embodiment 1 of the present invention;

[0028] Figure 6 This is a cross-sectional view of the male needle sealing body of Embodiment 1 of the present invention;

[0029] Figure 7 This is a schematic diagram of the front sealing seat of Embodiment 1 of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of the rear sealing seat according to Embodiment 1 of the present invention;

[0031] Figure 9 This is a schematic diagram of the connector structure according to Embodiment 2 of the present invention.

[0032] Attached image captions:

[0033] 1 male connector terminal, 11 male connector end faces;

[0034] 2. Connector female end, 21. Female end connection face, 22. Female pin sealing cavity;

[0035] 3 male end shell, 31 limiting step, 32 drainage hole;

[0036] 4. Male end sealing unit, 41. Male pin seat, 42. Male pin assembly, 421. Male pin, 5211. Male pin connector, 4212. Insulating layer, 422. Front sealing sleeve, 423. Rear sealing sleeve, 43. End face sealing layer, 44. Sealing block.

[0037] 5. Male needle protection unit, 51. Front sealing seat, 511. Limiting boss, 512. Drainage through hole, 52. Rear sealing seat, 53. Male needle sealing body, 531. Sealing cylinder, 5311. Hollow channel, 5312. Liquid passage hole, 5313. Stepped part, 532. Front sealing body, 5321. Front sealing cavity hole, 5322. Stepped mating part, 533. Rear sealing body, 5331. Rear sealing cavity hole, 5332. Annular limiting groove, 534. Clamp, 535. Receiving cavity, 536. Connecting cavity, 54. Pressure balance hole, 55. Buffer cavity, 56. Locking post, 57. Receiving channel;

[0038] 6. Elastic reset component. Detailed Implementation

[0039] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, primarily used to illustrate the embodiments and to explain the operating principles of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0040] For ease of description, the definitions are as follows: Figure 2 The direction indicated by the middle arrow is the front-end direction, and the direction opposite to the front-end direction is the back-end direction.

[0041] Example 1.

[0042] See Figure 1-8 As shown, as an embodiment of the present invention, a connector module is provided for connection and mating with the female connector end 2. The connector module 1 includes a male end housing 3, a male end sealing unit 4, a male pin protection unit 5, and an elastic reset member 6.

[0043] The male pin protection unit 5 is installed inside the front end of the male end housing 3, the male end sealing unit 4 is installed at the rear end of the male end housing 3, and the elastic reset member 6 is located inside the male end housing 3 between the male end sealing unit 4 and the male pin protection unit 5, for the male pin protection unit 5 to slide and reset.

[0044] The male end sealing unit 4 includes a male needle seat 41 and three male needle assemblies 42 disposed on the male needle seat 41. The male needle assembly 42 includes a male needle 421, a front sealing sleeve 422 and a rear sealing sleeve 423. The male needle 421 has a male needle connecting part 4211. The front sealing sleeve 422 and the rear sealing sleeve 423 are respectively sleeved on the periphery of the male needle 421 at the front and rear ends of the corresponding male needle connecting part 4211.

[0045] The male needle protection unit 5 includes three male needle sealing bodies 53, which include a front sealing body 532, a rear sealing body 533 and a sealing cylinder 531. The front sealing body 532 and the rear sealing body 533 enclose and form a receiving cavity 535, and the sealing cylinder 531 is sealed and disposed within the receiving cavity 535.

[0046] The male needle assembly 42 corresponds one-to-one with the male needle sealing body 53. That is, the front end of each male needle assembly 42 is individually sealed and inserted into a male needle sealing body 53. The front sealing body 532 of the male needle sealing body 53 and the front sealing sleeve 422 of the male needle assembly 42 form a front-end seal, and the rear sealing body 533 of the male needle sealing body 53 and the rear sealing sleeve 423 of the male needle assembly 42 form a rear-end seal. A connecting cavity 536 is formed between the sealing cylinder 531 and the male needle assembly 42. The connecting cavity 536 is filled with insulating oil, and the insulating oil completely covers the male needle connecting part 4211.

[0047] The above technical solution improves the insulation performance of the connector module 1 by providing an independent male pin sealing body 53 filled with insulating oil on each male pin assembly 42, ensuring that the insulating oil completely covers the male pin connection part 4211. This guarantees that the connector module 1 and the connector female end 2 remain in a sealed and insulated state during the insertion or separation process. Furthermore, by providing independent protection for each male pin 421 with each male pin sealing body 53, the male pin connection part 4211 can be isolated from the outside world, preventing external media from settling or organisms from entangled on the male pin connection part 4211. This achieves efficient protection for the male pin 421 and significantly improves the insulation resistance between the male pins 421, ensuring the contact electrical performance of the male pins 421 during insertion. This improves the stability of the connector module 1 during live insertion and removal in harsh underwater environments. Moreover, the connector module 1 of this invention is relatively easy to operate and does not increase the difficulty of connection. At the same time, by using multiple unit combinations, different units can be replaced according to different connection requirements, which is convenient for disassembly, replacement and maintenance, improving the interchangeability and versatility of the product.

[0048] Specifically, the sealing cylinder 531 has a hollow channel 5311, the front sealing body 532 has a front sealing cavity 5321 corresponding to the front end of the hollow channel 5311, and the rear sealing body 533 has a rear sealing cavity 5331 corresponding to the rear end of the hollow channel 5311. The front end of the male needle assembly 42 passes through the rear sealing cavity 5331, the hollow channel 5311, and the front sealing cavity 5321 in sequence and is sealed and inserted into the male needle sealing body 53. Both the front sealing body 532 and the rear sealing body 533 are elastic compressible materials. Made of a material such as rubber, the front sealing body 532 of the male needle sealing body 53 and the front sealing sleeve 422 of the male needle assembly 42 form a front-end seal at the front sealing cavity 5321, and the rear sealing body 533 of the male needle sealing body 53 and the rear sealing sleeve 423 of the male needle assembly 42 form a rear-end seal at the rear sealing cavity 5331. The male needle connection part 4211 is located in the hollow channel 5311, and insulating oil fills the receiving cavity 535 and the hollow channel 5311, so that the male needle connection part 4211 is always in a sealed and insulating state.

[0049] In this embodiment, the elastic reset element 6 is a spring, which is more versatile and stable. Of course, other types of elastic reset elements can also be used, such as elastic metal sheets.

[0050] In this embodiment, a stepped portion 5313 is formed on the outer wall of the front end of the sealing cylinder 531, and a stepped mating portion 5322 is formed on the inner wall of the rear end of the front sealing body 532. The stepped portion 5313 and the stepped mating portion 5322 form a limiting fit. An annular limiting groove 5332 is formed on the inner side of the rear sealing body 533, and the rear end of the sealing cylinder 531 forms a limiting fit with the annular limiting groove 5332. This arrangement ensures that the front and rear ends of the male needle sealing body 53 can respectively limit and seal with the front sealing seat 51 and the rear sealing seat 52, thereby ensuring the axial sealing of the male needle sealing body 53. Furthermore, the inner wall of the front end of the rear sealing body 533 is sealed and connected to the outer wall of the rear end of the front sealing body 532, and a clamp 534 is fitted on the periphery of the rear sealing body 533 at the position corresponding to the front sealing body 532 and the sealing cylinder 531, which can ensure the radial sealing of the male needle sealing body 53, thereby ensuring a higher overall sealing performance of the male needle sealing body 53.

[0051] In this embodiment, the male needle protection unit 5 also includes a front sealing seat 51 and a rear sealing seat 52. The front sealing seat 51 and the rear sealing seat 52 are sealed together by locking pins 56. After sealing, the front sealing seat 51 and the rear sealing seat 52 form multiple sets of receiving cavities 57. Each male needle sealing body 53 is inserted into a set of receiving cavities 57. A buffer cavity 55 is formed between the outside of the male needle sealing body 53 and the receiving cavity 57. The front sealing seat 51 and the rear sealing seat 52 are provided with multiple pressure balance holes 54. The buffer cavity 55 is connected to the outside through the pressure balance holes 54.

[0052] During the insertion and removal process between the connector module 1 and the connector female end 2 in this embodiment, the insulating oil in the connection cavity 536 may leak outward, or a small amount of external medium may enter the connection cavity 536, causing the pressure in the connection cavity 536 to decrease or increase. This results in a pressure difference between the inside and outside of the connection cavity 536. The pressure balancing holes 54 of the front sealing seat 51 and the rear sealing seat 52 allow the external medium to smoothly enter and exit the buffer cavity 55, thereby balancing the pressure difference between the inside and outside of the connection cavity 536 and ensuring the insertion and removal stability of the connector module 1.

[0053] Furthermore, the sealing cylinder 531 is provided with multiple liquid passage holes 5312, and the connecting cavity 536 and the receiving cavity 535 are connected through the liquid passage holes 5312, so that the insulating oil in the connecting cavity 536 can enter and exit the receiving cavity 535 through the liquid passage holes 5312, thereby improving the fluidity of the insulating oil in the male pin sealing body 53, realizing the pressure balance in the connecting cavity 536, and further improving the insertion and removal stability of the connector module 1.

[0054] In this embodiment, the front end face of the front sealing seat 51 is the male end connection face 11 of the connector module 1, used to contact and engage with the female end connection face 21 of the connector female end 2. Since the insertion process of the connector module 1 with the connector female end 2 is performed underwater, during the insertion action before the female end connection face 21 of the connector female end 2 contacts the male end connection face 11 of the connector module 1, before the male end connection face 11 and the female end connection face 21 are tightly fitted, the pressure of the medium fluid at the front end of the male pin protection unit 5 is greater than the pressure of the medium fluid at the rear end, thus creating a pressure difference. The male pin protection unit 5 is prone to moving backward under the pressure difference of the medium fluid at its front and rear ends, which can easily affect the sealing and insulation effect of the male pin 421. Therefore, in this embodiment… The front sealing seat 51 is also provided with multiple drainage holes 512, and the male end housing 3 is provided with drainage holes 32. The male end housing 3 is cylindrical and has an internal cavity. The drainage holes 512 and drainage holes 32 are interconnected through the internal cavity of the male end housing 3. Since both drainage holes 512 and drainage holes 32 are connected to the outside, during the insertion action before the female end connection face 21 of the connector female end 2 contacts the male end connection face 11 of the connector module 1, the medium fluid can be discharged to the outside through the drainage holes 512, the internal cavity of the male end housing 3, and the drainage holes 32 in sequence, preventing the male pin protection unit 5 from moving backward, thereby ensuring that the male pin protection unit 5 always has a good sealing and insulation effect before and during the insertion of the connector module 1 and the connector female end 2.

[0055] In this embodiment, a limiting step 31 is provided on the inner side of the front end of the male end housing 3, and a limiting boss 511 is formed on the outer circumferential side of the front sealing seat 51 of the male pin protection unit 5. The limiting step 31 blocks and limits the front end of the limiting boss 511 so that the male pin protection unit 5 can slide axially within the limited range of the inner cavity of the male end housing 3, thereby facilitating the insertion or separation of the connector module 1 and the connector female end 2.

[0056] In this embodiment, the male needle assembly 42 also includes an insulating layer 4212 located on the surface of the male needle 421. The male needle assembly 42 is sintered and encapsulated on the male needle seat 41. An end face sealing layer 43 is formed on the end face of the encapsulated male needle seat 41. The end face sealing layer 43 is completely fused and connected with the insulating layer 4212 on the male needle corresponding to the end face of the male needle seat 41. A sealing block 44 is sintered between the periphery of the male needle assembly 42 and the male needle seat 41. This encapsulation method ensures that the male needle assembly 42 can be stably fixed on the male needle seat 41.

[0057] Example 2.

[0058] See Figure 9 As shown, the present invention also provides an underwater connector, including a female connector end 2 and a male connector end that cooperate with each other. The male connector end is the connector module 1 described in Embodiment 1 above. During the mating connection process between the female connector end 2 and the male connector end, the male pin protection unit 5 slides backward, thereby causing the front sealing body 532 and the rear sealing body 533 to slide backward on the male pin 421. The male pin connecting part 4211 enters the female pin sealing cavity 22 from the male pin sealing body 53. During this process, both ends of the male pin sealing body 53 are always in a sealed and insulated state. During the separation process between the female end 2 and the male end of the connector, the male pin protection unit 5 slides forward under the action of the elastic reset member 6, thereby driving the front sealing body 532 and the rear sealing body 533 to slide forward on the male pin assembly 42. The male pin connection part 4211 retracts from the female pin sealing cavity 22 into the male pin sealing body 53. During this process, both ends of the male pin sealing body 53 are always in a sealed and insulated state, that is, to ensure that the male end of the connector and the female end of the connector 2 are always in a sealed and insulated state during the insertion or separation process.

[0059] In this embodiment, there are 7 male needle assemblies 42, 7 male needle sealing bodies 53, and 7 female needle sealing cavities 22. Of course, the number of each component can be adjusted according to actual needs.

[0060] This invention provides independent protection for each male pin 421 by having each male pin sealing body 53, which effectively isolates the male pin connection part 4211 from the outside world, preventing external media from settling or organisms from getting entangled on the male pin connection part 4211. This protects the male pin 421 and greatly improves the insulation resistance between each male pin 421, ensuring the contact electrical performance of the male pin 421 during insertion, thereby improving the stability of the underwater connector during live insertion and removal in harsh underwater environments.

[0061] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail made to the invention without departing from the spirit and scope of the invention as defined in the appended claims fall within the protection scope of the invention.

Claims

1. A connector module, characterized in that: Includes male terminal housing, male terminal sealing unit, male pin protection unit, and elastic reset component; The male pin protection unit is installed inside the front end of the male terminal housing, the male terminal sealing unit is installed inside the rear end of the male terminal housing, and the elastic reset member is located inside the male terminal housing between the male terminal sealing unit and the male pin protection unit, for the male pin protection unit to slide and reset. The male end sealing unit includes a male needle seat and multiple male needle assemblies disposed on the male needle seat. The male needle assembly includes a male needle, a front sealing sleeve and a rear sealing sleeve. The male needle has a male needle connecting part. The front sealing sleeve and the rear sealing sleeve are respectively fitted around the male needle at the front and rear ends of the corresponding male needle connecting part. The sealed cylinder is provided with multiple liquid passage holes, and the connecting cavity and the receiving cavity are connected through the liquid passage holes; The male needle protection unit includes a front sealing seat, a rear sealing seat, and multiple male needle sealing bodies. The front and rear sealing seats are encapsulated and cooperate to form multiple sets of receiving cavities. Each male needle sealing body is inserted into a set of receiving cavities. The male needle sealing body includes a front sealing body, a rear sealing body, and a sealing cylinder. The front and rear sealing bodies enclose and form a receiving cavity. The sealing cylinder is sealed and installed in the receiving cavity. The front sealing seat is also provided with multiple drainage holes. The male end shell is provided with drainage holes. The male end shell is cylindrical and has an internal cavity. The drainage holes and drainage holes are interconnected through the internal cavity of the male end shell. The front end seal of the male needle assembly is inserted inside the male needle sealing body. The front sealing body of the male needle sealing body and the front sealing sleeve of the male needle assembly form a front end seal. The rear sealing body of the male needle sealing body and the rear sealing sleeve of the male needle assembly form a rear end seal. A connecting cavity is formed between the sealing cylinder and the male needle assembly. The connecting cavity is filled with insulating oil, and the insulating oil completely covers the male needle connection part.

2. The connector module according to claim 1, characterized in that: The sealing cylinder has a hollow channel. The front sealing body forms a front sealing cavity corresponding to the front end of the hollow channel, and the rear sealing body forms a rear sealing cavity corresponding to the rear end of the hollow channel. The front end of the male needle assembly passes through the rear sealing cavity, the hollow channel, and the front sealing cavity in sequence and is sealed and inserted into the male needle sealing body. The front sealing body of the male needle sealing body and the front sealing sleeve of the male needle assembly form a front sealing at the front sealing cavity. The rear sealing body of the male needle sealing body and the rear sealing sleeve of the male needle assembly form a rear sealing at the rear sealing cavity. The male needle connection part is located in the hollow channel.

3. The connector module according to claim 1, characterized in that: The front outer wall of the sealing cylinder has a stepped portion, the rear inner wall of the front sealing body has a stepped mating portion, the stepped portion and the stepped mating portion form a limiting fit, the inner side of the rear sealing body has an annular limiting groove, the rear end of the sealing cylinder forms a limiting fit with the annular limiting groove, the front inner wall of the rear sealing body is sealed to the rear outer wall of the front sealing body, and the outer periphery of the rear sealing body is fitted with clamps at the positions corresponding to the front sealing body and the sealing cylinder.

4. The connector module according to claim 1, characterized in that: A buffer cavity is formed between the outer side of the male needle sealing body and the receiving cavity. Multiple pressure balance holes are provided on both the front and rear sealing seats, and the buffer cavity is connected to the outside through the pressure balance holes.

5. The connector module according to claim 1, characterized in that: The male end housing has a limiting step on the inner front side, and the male needle protection unit has a limiting boss on the outer circumferential side of the front sealing seat. The limiting step blocks and limits the limiting boss so that the male needle protection unit can slide axially back and forth inside the male end housing.

6. The connector module according to claim 1, characterized in that: The male needle assembly also includes an insulating layer on the surface of the male needle. The male needle assembly is sintered and encapsulated on the male needle seat. An end face sealing layer is formed on the end face of the encapsulated male needle seat. The end face sealing layer is completely fused and connected with the insulating layer on the end face of the male needle corresponding to the end face of the male needle seat. A sealing block is formed by sintering between the outer periphery of the male needle assembly and the male needle seat.

7. An underwater connector, characterized in that: It includes a female connector end and a male connector end that mate with each other, wherein the male connector end is the connector module described in any one of claims 1-6 above.

8. The underwater connector according to claim 7, characterized in that: During the mating connection process between the female and male connector ends, the male pin protection unit slides backward, which in turn causes the front and rear sealing bodies to slide backward on the male pin sleeve. The male pin connection part enters the female pin sealing cavity from the male pin sealing body. During this process, both ends of the male pin sealing body are always in a sealed and insulated state. During the separation process between the female and male connector terminals, the male pin protection unit slides forward under the action of the elastic reset element, which in turn drives the front and rear sealing bodies to slide forward on the male pin assembly. The male pin connection part retracts from the female pin sealing cavity into the male pin sealing body. During this process, both ends of the male pin sealing body remain in a sealed and insulated state.

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