Underwater optical fiber butt joint device

Abstract

The invention discloses an underwater optical fiber butt joint device which comprises a male head and a female head, the male head and the female head are connected with the connecting ends of two optical fibers to be connected respectively, in a normal state, the butt joint face of the male head is in a plane shape, a male head butt joint needle head (1) in the male head is arranged on the side, away from the female head, of the butt joint face of the male head, and the butt joint face of the female head is in a plane shape. A female head butt joint needle (2) in the female head is arranged on the side, away from the male head, of the butt joint face of the female head, during butt joint, the butt joint face of the male head firstly abuts against the butt joint face of the female head, then the butt joint face of the male head and the butt joint face of the female head form axial dislocation, the male head butt joint needle (1) is ejected out in the direction of the female head, and the female head butt joint needle (2) is ejected out in the direction of the male head. And abutting connection of the male butt joint needle head (1) and the female butt joint needle head (2) is completed. The invention provides an underwater optical fiber butt joint device capable of performing underwater butt joint on optical fibers.

Description

Technical Field

[0001] This invention relates to the field of optical fiber docking, specifically to an underwater optical fiber docking device. Background Technology

[0002] With the booming development of the global marine economy, technological iterations in fields such as marine resource exploration and development, seabed observation network construction, offshore wind power deployment, and deep-sea communications are accelerating, leading to an increasing reliance on underwater optical communication systems. Underwater optical connectors, as core connecting components in underwater optical communication systems, play a crucial role in ensuring stable transmission of optical signals and facilitating flexible interoperability between devices.

[0003] However, traditional underwater optical connector splicing usually needs to be completed on land or on a deck to avoid water seepage during the fiber connection process, which would affect the quality of the fiber. But some equipment needs to be spliced ​​in a wet underwater environment. If the fiber optic head is directly exposed to seawater, it will affect the transmission performance of the optical connector after splicing. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an underwater optical fiber docking device that can perform underwater docking of optical fibers.

[0005] The technical solution adopted by the present invention to solve the above problems is as follows: an underwater optical fiber splicing device, including a male connector and a female connector, wherein the male connector and the female connector are respectively connected to the connection ends of two optical fibers to be connected. Under normal conditions, the splicing surface of the male connector is planar, and the male connector splicing pin inside the male connector is located on the side of the male connector splicing surface away from the female connector. The splicing surface of the female connector is planar, and the female connector splicing pin inside the female connector is located on the side of the female connector splicing surface away from the male connector. During splicing, the splicing surface of the male connector first abuts against the splicing surface of the female connector, and then the splicing surface of the male connector and the splicing surface of the female connector form an axial misalignment, causing the male connector splicing pin to push out towards the female connector and the female connector splicing pin to push out towards the male connector, thus completing the abutting connection of the male connector splicing pin and the female connector splicing pin.

[0006] Compared with the prior art, the advantages of this invention are as follows: Under normal conditions, because both the male and female connector mating surfaces are planar, it is easy to ensure the sealing of the planar structure, preventing water from seeping into the male and female connectors. The male connector mating pin is located inside the male connector, and the female connector mating pin is located inside the female connector, thus ensuring the safety of the male and female connector mating pins before mating. During mating, the male and female connector mating surfaces must be pressed together, thus avoiding external water seepage during mating. Therefore, the waterproof function of underwater optical fiber mating is achieved, ensuring the feasibility of underwater optical fiber mating.

[0007] As an improvement of the present invention, the male connector includes a male connector outer shell, a male connector central shaft, and a male connector movable inner shell. The male connector central shaft is located on the axis of the male connector outer shell, and the male connector movable inner shell is located between the male connector outer shell and the male connector central shaft. Normally, the end face of the male connector outer shell near the female connector, the end face of the male connector central shaft near the female connector, and the end face of the male connector movable inner shell near the female connector form the mating surface of the male connector. The female connector includes a female connector outer shell, a female connector abutment, a female connector central shaft, and a female connector movable inner shell. The female connector abutment is located in the inner layer of the female connector outer shell, the female connector central shaft is located on the axis of the female connector outer shell, and the female connector movable inner shell is located between the female connector abutment and the female connector central shaft. Normally, the female connector abutment... The end face near the male head, the end face near the male head of the female head's central axis, and the end face near the male head of the female head's movable inner shell constitute the mating surface of the female head. During mating, the male head's outer shell is inserted into the female head's outer shell and abuts against the female head's abutment post. The male head's central axis abuts against the female head's central axis. The male head's movable inner shell moves away from the female head to form a space that allows the male head's mating pin to eject from the male head's mating surface. Similarly, the female head's movable inner shell moves away from the male head to form a space that allows the female head's mating pin to eject from the female head's mating surface. Through this improvement, the composition of the male head's mating surface and the female head's mating surface are disclosed, as well as the ejection space that allows the male head's mating pin to eject from the male head and the female head's mating pin to eject from the female head's mating surface are revealed.

[0008] As an improvement of the present invention, the male head central shaft is movably connected to the male head housing along the axial direction, and the end of the male head central shaft away from the female head is provided with a male head driving component for driving the male head movable inner housing away from the female head.

[0009] As an improvement of the present invention, the male head movable inner shell is formed by splicing two male head movable half shells. Two male head drive assemblies are provided, each used to drive one of the two male head movable half shells. The two male head drive assemblies are respectively located on opposite sides of the male head central axis. Each male head drive assembly includes a male head steering rod, a male head connecting rod, and a male head guide rod. One end of the male head steering rod is fixedly connected to the male head central axis, and the other end moves radially away from the male head central axis. The two ends of the male head connecting rod are respectively hinged to the other end of the male head steering rod and the male head movable half shell. When the male head central axis moves away from the female head, it drives the male head movable half shell to move away from the female head. A guide rod is positioned between the male connector outer shell and the male connector movable half-shell. The end of the male connector guide rod near the male connector movable half-shell abuts against the male connector movable half-shell. The contact surface between the male connector guide rod and the male connector movable half-shell is inclined. When the male connector movable half-shell moves away from the female connector, it simultaneously moves radially away from the axis. Through this improvement, the installation and connection of the male connector drive assembly and the driving of the male connector movable half-shell are realized. Under docking conditions, the end face of the male connector movable half-shell in the docking surface of the male connector moves, forming a space for the male connector docking needle to eject the male connector. The inclined design of the contact surface between the male connector guide rod and the male connector movable half-shell ensures that the male connector movable half-shell does not affect the ejection of the male connector docking needle during movement.

[0010] As an improvement of the present invention, the male connector mating pin is disposed between the male connector guide rod and the male connector central axis, and the connection end of the male connector mating pin and the male connector housing is provided with a male connector ejection spring. After the male connector movable half-shell is separated from the male connector mating surface, the male connector mating pin is ejected towards the female connector under the action of the male connector ejection spring. Through the improvement, the male connector mating pin is quickly ejected after the male connector movable half-shell is separated from the male connector mating surface.

[0011] As an improvement of the present invention, a male guide groove is provided on the side of the male movable half-shell near the male guide rod. One end of the male guide rod is movably connected in the male guide groove, and a male return spring is provided between the other end of the male guide rod and the male outer shell. A male return inclined surface is provided on the side of the male connector pin near the male guide rod. A central shaft return spring is provided between the male central shaft and the end face of the male head away from the female head. When the male head and the female head separate, under the action of the central shaft return spring, the male central shaft drives the male movable half-shell to move towards the female head. Under the action of the male return spring, the male guide rod ensures that the male movable half-shell... The accuracy of shell movement is improved, and the male head movable half-shell abuts against the male head reset slope to reset the male head docking pin. Through the design of the male head guide groove, the stability and accuracy of the movement of the male head movable half-shell can be guaranteed. Through the design of the male head reset slope, central shaft reset spring, and male head reset spring, when the male head and female head separate, the central shaft reset spring can reset the central shaft, and then the male head movable half-shell can reset. When the male head movable half-shell moves towards the male head docking surface, the male head movable half-shell abuts against the male head reset slope, causing the male head docking pin to retract and reset, thus completing the male head reset and facilitating the next docking.

[0012] As an improvement of the present invention, the female head abutment is movably connected to the female head housing along the axial direction, and the end of the female head abutment away from the male head is provided with a female head driving component for driving the female head movable inner housing away from the male head.

[0013] As an improvement of the present invention, the movable inner shell of the female head is formed by splicing two movable half-shells of the female head. Two female head drive assemblies are provided, each used to drive one of the two movable half-shells of the female head. The two female head drive assemblies are respectively located on opposite sides of the central axis of the female head. Each female head drive assembly includes a female head rack, a reversing gear set, a female head axial connecting rack, a female head reversing connecting rod, and a female head guide rod. The female head rack is axially fixedly connected to the female head abutment, and the female head axial connecting rack is axially movable and connected to the female head abutment. The reversing gear set is used to drive the female head rack and the female head axial connecting rack to ensure that the female head rack and the female head axial connecting rack move in the same direction. The two ends of the female head reversing connecting rod are respectively hinged to the end of the female head axial connecting rack away from the reversing gear set and the movable half-shell of the female head. When the female head abutment moves away from the male head, it drives the female head movable half-shell to move away from the male head as well. The female head guide rod is located between the female head abutment and the female head movable half-shell. The end of the female head guide rod near the female head movable half-shell abuts against the female head movable half-shell. The contact surface between the female head guide rod and the female head movable half-shell is inclined. When the female head movable half-shell moves away from the male head, the female head movable half-shell also moves radially away from the axis. Through this improvement, the installation and connection of the female head drive assembly and the driving of the female head movable half-shell are realized. Under the condition of docking, the end face of the female head movable half-shell in the docking surface of the female head moves to form a space for the female head docking needle to push out of the female head. The design of the inclined contact surface between the female head guide rod and the female head movable half-shell ensures that the female head movable half-shell will not affect the ejection of the female head docking needle during the movement.

[0014] As an improvement of the present invention, the female head docking pin is located between the female head guide rod and the female head central axis, and the connection end of the female head docking pin and the female head abutment is provided with a female head ejection spring. After the female head movable half shell is separated from the female head docking surface, the female head docking pin is ejected towards the male head under the action of the female head ejection spring. Through the improvement, the female head docking pin is quickly ejected after the female head movable half shell is separated from the male head docking surface.

[0015] As an improvement of the present invention, a female head guide groove is provided on the side of the female head movable half-shell near the female head guide rod. One end of the female head guide rod is movably connected in the female head guide groove, and a female head return spring is provided between the other end of the female head guide rod and the female head abutment. A female head return inclined surface is provided on the side of the female head docking end near the female head guide rod. A abutment return spring is provided between the female head abutment and the end face of the female head away from the male head. When the male head and the female head separate, under the action of the abutment return spring, the female head abutment drives the female head movable half-shell to move towards the male head. Under the action of the female head return spring, the female head guide rod ensures that the female head movable half-shell... The accuracy of movement is ensured by the design of the female head guide groove, which abuts against the female head reset slope to reset the female head docking pin. The design of the female head reset slope, the abutment reset spring, and the female head reset spring allow the abutment to reset when the male and female heads separate, followed by the female head reset spring resetting the female head movable half-shell. As the female head movable half-shell moves towards the female head docking surface, it abuts against the female head reset slope, causing the female head docking pin to retract and reset, thus completing the female head reset and facilitating the next docking. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the entire invention when the male and female heads are just touching.

[0017] Figure 2 This is the present invention. Figure 1 Enlarged structural diagram of section A in the middle.

[0018] Figure 3 This is a cross-sectional view of the entire invention after the male and female heads are joined.

[0019] Figure 4 This is the present invention. Figure 2 Enlarged structural diagram of section B.

[0020] Figure 5 This is a schematic diagram of the connection structure of the male connector driver component of the present invention.

[0021] Figure 6 This is a schematic diagram of the connection structure of the female head drive component of the present invention.

[0022] Figure 7 This is the present invention. Figure 6 Enlarged structural diagram of section C.

[0023] Figure 8 This is a schematic diagram of the overall structure of the present invention.

[0024] The diagram shows: 1. Male connector pin, 1.1. Male reset bevel, 2. Female connector pin, 2.1. Female reset bevel, 3. Male connector housing, 4. Male connector central shaft, 5. Male connector movable inner housing, 5.1. Male connector movable half-housing, 5.2. Male connector guide groove, 6. Female connector housing, 7. Female connector abutment, 8. Female connector central shaft, 9. Female connector movable inner housing, 9.1. Female connector movable half-housing, 9.2. Female connector guide groove, 10. Male connector drive assembly, 10.1. Male connector steering rod, 10.2. Male connector connecting rod, 10.3. Male connector guide rod, 11. Male connector ejection spring, 12. Male connector... 13. Head return spring; 14. Central shaft return spring; 15. Female head drive assembly; 16. Female head rack; 17. Reversing gear set; 18. Drive gear; 19. Connecting gear; 20. Female head guide rod; 21. Female head push-out spring; 22. Female head return spring; 23. Abutment return spring; 44. Male head oil bladder; 55. Female head oil bladder; 66. Male head pressure adjusting hole; 77. Female head pressure adjusting hole; 88. Directional post; 99. Directional groove. Detailed Implementation

[0025] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0026] like Figure 1-4 As shown, an underwater optical fiber splicing device includes a male connector and a female connector. The male connector and the female connector are respectively connected to the connection ends of two optical fibers to be connected. Under normal conditions, the mating surface of the male connector is planar, and the male connector mating pin 1 inside the male connector is located on the side of the male connector mating surface away from the female connector. The mating surface of the female connector is planar, and the female connector mating pin 2 inside the female connector is located on the side of the female connector mating surface away from the male connector. During splicing, the mating surface of the male connector first abuts against the mating surface of the female connector, and then the mating surface of the male connector and the mating surface of the female connector form an axial misalignment, causing the male connector mating pin 1 to push out towards the female connector and the female connector mating pin 2 to push out towards the male connector, thus completing the abutting connection of the male connector mating pin 1 and the female connector mating pin 2.

[0027] The male connector includes a male connector outer shell 3, a male connector central shaft 4, and a male connector movable inner shell 5. The male connector central shaft 4 is located on the axis of the male connector outer shell 3, and the male connector movable inner shell 5 is located between the male connector outer shell 3 and the male connector central shaft 4. Under normal conditions, the end face of the male connector outer shell 3 near the female connector, the end face of the male connector central shaft 4 near the female connector, and the end face of the male connector movable inner shell 5 near the female connector form the mating surface of the male connector. The female connector includes a female connector outer shell 6, a female connector abutment 7, a female connector central shaft 8, and a female connector movable inner shell 9. The female connector abutment 7 is located in the inner layer of the female connector outer shell 6, and the female connector central shaft 8 is located on the axis of the female connector outer shell 6. The movable inner shell 9 is located between the female head abutment 7 and the female head central axis 8. Under normal conditions, the end face of the female head abutment 7 near the male head, the end face of the female head central axis 8 near the male head, and the end face of the movable inner shell 9 near the male head form the mating surface of the female head. During mating, the male head outer shell 3 is inserted into the female head outer shell 6 and abuts against the female head abutment 7. The male head central axis 4 abuts against the female head central axis 8. The movable inner shell 5 of the male head moves away from the female head to form a space for the male head mating needle 1 to push out the mating surface of the male head. The movable inner shell 9 of the female head moves away from the male head to form a space for the female head mating needle 2 to push out the mating surface of the female head.

[0028] like Figure 1 , Figure 3 , Figure 5 As shown, the male head central shaft 4 is movably connected within the male head outer shell 3 along the axial direction. At the end of the male head central shaft 4 away from the female head, a male head drive assembly 10 is provided for driving the male head movable inner shell 5 away from the female head. The male head movable inner shell 5 is composed of two male head movable half-shells 5.1 joined together. Two male head drive assemblies 10 are provided, each driving one of the two male head movable half-shells 5.1 respectively. The two male head drive assemblies 10 are respectively located on opposite sides of the male head central shaft 4. Each male head drive assembly 10 includes a male head steering rod 10.1, a male head connecting rod 10.2, and a male head guide rod 10.3. One end of the male head steering rod 10.1 is fixedly connected to the male head central shaft 4. The other end of the guide rod 10.1 moves radially away from the male connector center axis 4. The two ends of the male connector connecting rod 10.2 are respectively hinged to the other end of the male connector steering rod 10.1 and the male connector movable half-shell 5.1. When the male connector center axis 4 moves away from the female connector, it drives the male connector movable half-shell 5.1 to move away from the female connector. The male connector guide rod 10.3 is located between the male connector outer shell 3 and the male connector movable half-shell 5.1. The end of the male connector guide rod 10.3 near the male connector movable half-shell 5.1 abuts against the male connector movable half-shell 5.1. The abutment surface of the male connector guide rod 10.3 and the male connector movable half-shell 5.1 is inclined. When the male connector movable half-shell 5.1 moves away from the female connector, the male connector movable half-shell 5.1 moves simultaneously radially away from the axis.

[0029] The male connector pin 1 is located between the male connector guide rod 10.3 and the male connector central shaft 4. A male connector ejection spring 11 is provided at the connection end between the male connector pin 1 and the male connector housing 3. After the male connector movable half-shell 5.1 disengages from the male connector's mating surface, the male connector pin 1 is ejected towards the female connector under the action of the male connector ejection spring 11. A male connector guide groove 5.2 is provided on the side of the male connector movable half-shell 5.1 near the male connector guide rod 10.3. One end of the male connector guide rod 10.3 is movably connected within the male connector guide groove 5.2, and a male connector is provided between the other end of the male connector guide rod 10.3 and the male connector housing 3. A return spring 12 is provided. A male head return slope 1.1 is provided on the side of the male head guide rod 10.3 near the docking end of the male head docking needle 1. A central shaft return spring 13 is provided between the male head central shaft 4 and the end face of the male head away from the female head. When the male head and the female head are separated, under the action of the central shaft return spring 13, the male head central shaft 4 drives the male head movable half shell 5.1 to move towards the female head. Under the action of the male head return spring 12, the male head guide rod 10.3 ensures the accuracy of the movement of the male head movable half shell 5.1, and the male head movable half shell 5.1 abuts against the male head return slope 1.1 to reset the male head docking needle 1.

[0030] like Figure 1 , Figure 3 , Figure 6 , Figure 7As shown, the female head abutment 7 is movably connected to the female head outer shell 6 along the axial direction. The end of the female head abutment 7 away from the male head is provided with a female head drive assembly 14 for driving the female head movable inner shell 9 away from the male head. The female head movable inner shell 9 is composed of two female head movable half-shells 9.1 spliced ​​together. Two female head drive assemblies 14 are provided, each used to drive one of the two female head movable half-shells 9.1. The two female head drive assemblies 14 are respectively located at the center of the female head. On opposite sides of shaft 8, the female head drive assembly 14 includes a female head rack 14.1, a reversing gear set 14.2, a female head axial connecting rack 14.3, a female head reversing connecting rod 14.4, and a female head guide rod 14.5. The female head rack 14.1 is axially fixedly connected to the female head abutment 7, and the female head axial connecting rack 14.3 is axially movably connected to the female head abutment 7. The reversing gear set 14.2 is used for transmission connection of the female head rack. 14.1 A rack 14.3 is axially connected to the female head rack 14.1 to ensure that the female head rack 14.1 and the axially connected rack 14.3 move in the same direction. The reversing gear set 14.2 has three gears: a drive gear 14.2.1 that meshes with the female head rack 14.1, an output gear 14.2.3 that meshes with the female head rack 14.3, and a connecting gear 14.2.2. The drive gear 14.2.1 meshes with the connecting gear 14.2.2, and the output gear... Wheel 14.2.3 is coaxially and fixedly connected to connecting gear 14.2.2. The diameter of output gear 14.2.3 is larger than that of connecting gear 14.2.2. Through the variable diameter design of output gear 14.2.3 and connecting gear 14.2.2, the backward speed of female head movable half shell 9.1 is faster than that of female head abutment 7, that is, the relative displacement of female head movable half shell 9.1 and female head abutment 7 is realized, so that the mating surface of female head forms a space for female head mating needle 2 to push out of the mating surface of female head. The two ends of the female head reversing connecting rod 14.4 are respectively hinged to the end of the female head axial connecting rack 14.3 away from the reversing gear set 14.2 and the female head movable half-shell 9.1. When the female head abutment 7 moves away from the male head, it drives the female head movable half-shell 9.1 to move away from the male head. The female head guide rod 14.5 is located between the female head abutment 7 and the female head movable half-shell 9.1. The end of the female head guide rod 14.5 near the female head movable half-shell 9.1 abuts against the female head movable half-shell 9.1. The abutment surfaces of the female head guide rod 14.5 and the female head movable half-shell 9.1 are inclined. When the female head movable half-shell 9.1 moves away from the male head, it simultaneously moves radially away from the axis. An axial hole is provided on the female head abutment 7 for the female head axial connecting rack 14.3 to move, so as to ensure the axial movement of the female head axial connecting rack 14.3.

[0031] The female head docking pin 2 is located between the female head guide rod 14.5 and the female head central axis 8. A female head ejection spring 15 is provided at the connection end between the female head docking pin 2 and the female head abutment 7. After the female head movable half-shell 9.1 disengages from the female head docking surface, the female head docking pin 2 is ejected towards the male head under the action of the female head ejection spring 15. A female head guide groove 9.2 is provided on the side of the female head movable half-shell 9.1 near the female head guide rod 14.5. One end of the female head guide rod 14.5 is movably connected within the female head guide groove 9.2, and the other end of the female head guide rod 14.5 is connected to the female head abutment 7. The female head reset spring 16 is provided. The female head reset inclined surface 2.1 is provided on the side of the female head docking pin 2 near the female head guide rod 14.5. The female head abutment 7 is provided with abutment reset spring 17 between the female head abutment 7 and the end face of the female head away from the male head. When the male head and female head are separated, under the action of the abutment reset spring 17, the female head abutment 7 drives the female head movable half shell 9.1 to move towards the male head. Under the action of the female head reset spring 16, the female head guide rod 14.5 ensures the accuracy of the movement of the female head movable half shell 9.1, and the female head movable half shell 9.1 abuts against the female head reset inclined surface 2.1 to reset the female head docking pin 2.

[0032] like Figure 1 , Figure 3 , Figure 8 As shown, a male oil bladder 18 is provided inside the male head, and a female oil bladder 19 is provided inside the female head. The interiors of both the male and female oil bladders 18 and 19 are supported by springs. A male pressure regulating hole 20 is provided on the surface of the male head to connect the outer surface of the male oil bladder 18 to the outside, and a female pressure regulating hole 21 is provided on the surface of the female head to connect the outer surface of the female oil bladder 19 to the outside. Both the male and female oil bladders 18 and 19 are filled with silicone oil, which not only ensures the lubrication of the internal structure of the male and female heads, but also prevents water from penetrating in the underwater environment due to oil pressure. In the deep sea environment, the male and female oil bladders 18 and 19 can contract according to water pressure, thereby balancing the pressure between the inner and outer sides of the male and female oil bladders 18 and 19, making the male and female heads adaptable during underwater use.

[0033] like Figure 1 , Figure 3 , Figure 8 As shown, to ensure the accurate alignment of the male connector pin 1 and the female connector pin 2, a directional post 22 is fixedly connected to the male connector, and a directional post 22 is machined on the female connector. During the connection, the directional post 22 and the directional groove 23 are circumferentially oriented to ensure the accurate alignment of the male connector pin 1 and the female connector pin 2.

[0034] On the outside of the male and female connectors, appropriate fixing structures can be designed according to requirements, such as fastener fixing connections, snap-fit ​​fixing connections, and plug-in cable fixing structures, to ensure the firmness of the male and female connectors after docking.

[0035] With the underwater fiber optic splicing device, the male connector 1 and the female connector 2 will never come into contact with seawater before splicing and throughout the splicing process, thus ensuring the safety of the male connector 1 and the female connector 2 in the underwater environment and guaranteeing the quality of fiber optic splicing.

[0036] The above description only illustrates the preferred embodiments of the present invention and should not be construed as limiting the scope of the claims. The present invention is not limited to the above embodiments, and variations in its specific structure are permitted. All modifications made within the scope of the independent claims of this invention are also within the scope of protection of this invention.

Claims

1. An underwater optical fiber docking device, characterized in that: It includes a male connector and a female connector. The male connector and the female connector are respectively connected to the connection ends of two optical fibers to be connected. Under normal conditions, the mating surface of the male connector is planar. The male connector mating pin (1) inside the male connector is located on the side of the male connector mating surface away from the female connector. The mating surface of the female connector is planar. The female connector mating pin (2) inside the female connector is located on the side of the female connector mating surface away from the male connector. During the connection, the mating surface of the male connector first abuts against the mating surface of the female connector. Then, the mating surface of the male connector and the mating surface of the female connector form an axial misalignment, and the male connector mating pin (1) pushes out towards the female connector, and the female connector mating pin (2) pushes out towards the male connector, thus completing the abutting connection of the male connector mating pin (1) and the female connector mating pin (2).

2. The underwater optical fiber docking device according to claim 1, characterized in that: The male connector includes a male connector shell (3), a male connector central shaft (4), and a male connector movable inner shell (5). The male connector central shaft (4) is located on the axis of the male connector shell (3), and the male connector movable inner shell (5) is located between the male connector shell (3) and the male connector central shaft (4). Under normal conditions, the end face of the male connector shell (3) near the female connector, the end face of the male connector central shaft (4) near the female connector, and the end face of the male connector movable inner shell (5) near the female connector form the mating surface of the male connector. The female connector includes a female connector shell (6), a female connector abutment (7), a female connector central shaft (8), and a female connector movable inner shell (9). The female connector abutment (7) is located in the inner layer of the female connector shell (6), and the female connector central shaft (8) is located on the axis of the female connector shell (6). The female head movable inner shell (9) is located between the female head abutment (7) and the female head central axis (8). Under normal conditions, the end face of the female head abutment (7) near the male head, the end face of the female head central axis (8) near the male head, and the end face of the female head movable inner shell (9) near the male head form the mating surface of the female head. During mating, the male head outer shell (3) is inserted into the female head outer shell (6) and abuts against the female head abutment (7). The male head central axis (4) abuts against the female head central axis (8). The male head movable inner shell (5) moves away from the female head to form a space for the male head mating needle (1) to push out of the mating surface of the male head. The female head movable inner shell (9) moves away from the male head to form a space for the female head mating needle (2) to push out of the mating surface of the female head.

3. The underwater optical fiber docking device according to claim 2, characterized in that: The male head central shaft (4) is movable and connected inside the male head housing (3) along the axial direction. The end of the male head central shaft (4) away from the female head is provided with a male head drive assembly (10) for driving the male head movable inner housing (5) away from the female head.

4. The underwater optical fiber docking device according to claim 3, characterized in that: The male head movable inner shell (5) is composed of two male head movable half shells (5.1) spliced ​​together. There are two male head drive assemblies (10). The two male head drive assemblies (10) are used to drive the two male head movable half shells (5.1) respectively. The two male head drive assemblies (10) are respectively located on opposite sides of the male head central shaft (4). The male head drive assembly (10) includes a male head steering rod (10.1), a male head connecting rod (10.2) and a male head guide rod (10.3). One end of the male head steering rod (10.1) is fixedly connected to the male head central shaft (4), and the other end of the male head steering rod (10.1) moves radially away from the male head central shaft (4). The male head connecting rod (10.2) The two ends of the male head steering rod (10.1) are respectively hinged to the other end of the male head steering rod (10.1) and the male head movable half shell (5.1). When the male head central axis (4) moves away from the female head, it drives the male head movable half shell (5.1) to move away from the female head. The male head guide rod (10.3) is located between the male head outer shell (3) and the male head movable half shell (5.1). The end of the male head guide rod (10.3) close to the male head movable half shell (5.1) abuts against the male head movable half shell (5.1). The abutting surface of the male head guide rod (10.3) and the male head movable half shell (5.1) is inclined. When the male head movable half shell (5.1) moves away from the female head, the male head movable half shell (5.1) moves radially away from the axis.

5. The underwater optical fiber docking device according to claim 4, characterized in that: The male connector pin (1) is located between the male connector guide rod (10.3) and the male connector central shaft (4), and the male connector pin (1) is connected to the male connector housing (3) with a male connector ejection spring (11). After the male connector movable half shell (5.1) is separated from the male connector mating surface, the male connector pin (1) is ejected towards the female connector under the action of the male connector ejection spring (11).

6. The underwater optical fiber docking device according to claim 5, characterized in that: The male head movable half shell (5.1) is provided with a male head guide groove (5.2) on the side near the male head guide rod (10.3). One end of the male head guide rod (10.3) is movably connected in the male head guide groove (5.2). A male head return spring (12) is provided between the other end of the male head guide rod (10.3) and the male head outer shell (3). A male head return inclined surface (1.1) is provided on the side of the male head docking pin (1) near the male head guide rod (10.3). The male head central shaft (4) A central shaft return spring (13) is provided between the male head and the end face away from the female head. When the male head and the female head are separated, under the action of the central shaft return spring (13), the male head central shaft (4) drives the male head movable half shell (5.1) to move towards the female head. Under the action of the male head return spring (12), the male head guide rod (10.3) ensures the accuracy of the movement of the male head movable half shell (5.1), and the male head movable half shell (5.1) abuts against the male head return inclined surface (1.1) to reset the male head docking needle (1).

7. The underwater optical fiber docking device according to claim 2, characterized in that: The female head abutment (7) is movably connected to the female head housing (6) along the axial direction. The end of the female head abutment (7) away from the male head is provided with a female head drive assembly (14) for driving the female head movable inner housing (9) away from the male head.

8. The underwater optical fiber docking device according to claim 7, characterized in that: The movable inner shell (9) of the female head is composed of two movable half shells (9.1) of the female head. There are two female head drive assemblies (14). The two female head drive assemblies (14) are used to drive the two movable half shells (9.1) of the female head respectively. The two female head drive assemblies (14) are respectively located on opposite sides of the central shaft (8) of the female head. The female head drive assembly (14) includes a female head rack (14.1), a reversing gear set (14.2), a female head axial connecting rack (14.3), a female head reversing connecting rod (14.4) and a female head guide rod (14.5). The female head rack (14.1) is fixedly connected to the female head abutment (7) along the axial direction. The female head axial connecting rack (14.3) is movably connected to the female head abutment (7) along the axial direction. The reversing gear set (14.2) is used to drive the female head rack (14.1) and the female head axial connecting rack (14.3). 3) To ensure that the female head rack (14.1) and the female head axial connecting rack (14.3) move in the same direction, the two ends of the female head reversing connecting rod (14.4) are respectively hinged to the end of the female head axial connecting rack (14.3) away from the reversing gear set (14.2) and the female head movable half shell (9.1). When the female head abutment (7) moves away from the male head, it drives the female head movable half shell (9.1) to move away from the male head. The female head guide rod (14.4) 5) Located between the female head abutment (7) and the female head movable half shell (9.1), the end of the female head guide rod (14.5) near the female head movable half shell (9.1) abuts against the female head movable half shell (9.1). The abutting surfaces of the female head guide rod (14.5) and the female head movable half shell (9.1) are inclined. When the female head movable half shell (9.1) moves away from the male head, the female head movable half shell (9.1) moves simultaneously in the radial direction away from the axis.

9. The underwater optical fiber docking device according to claim 8, characterized in that: The female head docking pin (2) is located between the female head guide rod (14.5) and the female head central axis (8), and the female head docking pin (2) and the female head abutment (7) are connected by a female head ejection spring (15). After the female head movable half shell (9.1) is separated from the female head docking surface, the female head docking pin (2) is ejected towards the male head under the action of the female head ejection spring (15).

10. The underwater optical fiber docking device according to claim 9, characterized in that: The female head movable half shell (9.1) is provided with a female head guide groove (9.2) on the side near the female head guide rod (14.5). One end of the female head guide rod (14.5) is movably connected in the female head guide groove (9.2). A female head return spring (16) is provided between the other end of the female head guide rod (14.5) and the female head abutment (7). A female head return inclined surface (2.1) is provided on the side of the female head docking pin (2) near the female head guide rod (14.5). The female head abutment ( 7) A push-post return spring (17) is provided between the end face of the female head away from the male head. When the male head and the female head are separated, under the action of the push-post return spring (17), the push-post (7) of the female head drives the movable half shell (9.1) of the female head to move towards the male head. Under the action of the female head return spring (16), the female head guide rod (14.5) ensures the accuracy of the movement of the movable half shell (9.1) of the female head, and the movable half shell (9.1) of the female head abuts against the female head return slope (2.1) to reset the female head docking needle (2).

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