Underwater plugging optical fiber connector

Abstract

The utility model provides an underwater plugging optical fiber connector. The underwater plugging optical fiber connector comprises a socket which comprises a socket shell; the plug comprises an outer shell; the identification mechanism comprises an actuating structure and an indicating structure, and the actuating structure has a first state in which the actuating structure is matched with the first end of the indicating structure to enable the second end of the indicating structure to retract into the outer shell and a second state in which the actuating structure is matched with the first end of the indicating structure to enable the second end of the indicating structure to extend out of the outer shell. The actuating structure is matched with the outer wall of the socket shell, the actuating structure is in a first state, the second end of the indicating structure retracts into the outer shell, and after the plug and the socket are plugged in place, the actuating structure is in a second state, and the second end of the indicating structure extends out of the outer shell. According to the technical scheme of the utility model, the problem that whether the plug and the socket of the connector are plugged in place is difficult to judge through an underwater camera after the plugging operation of the existing wet plugging connector is carried out underwater can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to an underwater plug-in optical fiber connector. Background Art

[0002] Among all kinds of marine technologies, submarine communication is the basic condition for the realization of other technologies. Therefore, marine optical cables and deep-sea sea-tight connectors play a key role in signal transmission and connection. Deep-sea sea-tight connectors are divided into dry plug connectors and wet plug connectors. Dry plug connectors can only be plugged and unplugged in a land environment, while wet plug connectors can be plugged and unplugged underwater, and can even be actively plugged and unplugged online without disconnecting the power / light source.

[0003] After the existing wet-plug connector is plugged in and out underwater, it is difficult to determine whether the connector plug and socket are properly plugged in through an underwater camera. Utility Model Content

[0004] The main purpose of the utility model is to provide an underwater pluggable optical fiber connector, which can solve the problem that after the existing wet pluggable connector is plugged in and out underwater, it is difficult to determine whether the connector plug and socket are properly plugged in through an underwater camera.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an underwater pluggable optical fiber connector, including: a socket, including a socket shell; a plug, the plug including an outer shell; and an identification mechanism, which is installed on the plug, the identification mechanism including an actuating structure and an indicating structure, the actuating structure having a first state in which the second end of the indicating structure is cooperated with the first end of the indicating structure so that the second end of the indicating structure is retracted into the outer shell, and a second state in which the actuating structure is cooperated with the first end of the indicating structure so that the second end of the indicating structure is extended out of the outer shell. During the plugging process, the actuating structure cooperates with the outer wall of the socket shell, the actuating structure is in the first state, and the second end of the indicating structure is retracted into the outer shell. After the plug and the socket are plugged into place, the actuating structure is in the second state, and the second end of the indicating structure is extended out of the outer shell.

[0006] Furthermore, the underwater pluggable fiber optic connector also includes an underwater camera device, which is located on the side of the plug away from the socket, and the underwater camera device is used to identify the indication structure; and / or the number of identification mechanisms is at least two, and at least two identification mechanisms are arranged at intervals along the circumference of the plug.

[0007] Furthermore, the indicating structure includes a connecting rod and a protrusion, the connecting rod is rotatably arranged on the outer shell, the protrusion is installed on the end of the connecting rod away from the socket, a channel is arranged on the outer shell, and the actuating structure cooperates with the end of the connecting rod away from the protrusion so that the protrusion extends out of the channel from the outer shell or retracts into the outer shell.

[0008] Furthermore, the plug also includes a plug shell and a connecting shell, the connecting shell is sleeved on the plug shell, the outer shell is sleeved on the connecting shell, one end of the connecting shell is connected to the outer shell, a first groove is provided at the end of the connecting rod close to the socket, one end of the actuating structure is connected to the plug shell, the other end of the actuating structure is stuck in the first groove, and can move in a direction close to or away from the connecting shell; and / or, the underwater pluggable optical fiber connector also includes a handle and a locking piece, the handle includes a connecting split, the connecting shell includes a connecting groove, the connecting split is inserted into the connecting groove and is connected to the connecting shell through the locking piece.

[0009] Furthermore, the actuating structure includes a straight wall section, a first protrusion structure is formed on a side of the straight wall section facing the indicating structure, and a second protrusion structure is formed on a side of the straight wall section facing the plug housing. The first protrusion structure is clamped in the first groove. During the plugging process, the second protrusion structure abuts against the outer wall of the socket housing, and the second protrusion structure drives the first protrusion structure to move away from the plug housing. The first protrusion structure drives the end of the connecting rod close to the socket to move away from the plug housing, so that the actuating structure is in the first state. A second groove is provided on the outer wall surface of the plug housing. After the plug and the socket are plugged into place, the second protrusion structure is clamped in the second groove. The second protrusion structure drives the first protrusion structure to move close to the plug housing. The first protrusion structure drives the end of the connecting rod close to the socket to move close to the plug housing, so that the actuating structure is in the second state.

[0010] Furthermore, the first protrusion structure has a first inclined surface on the side facing the plug housing, and the connecting housing includes a second inclined surface, which is constructed to cooperate with the first inclined surface when the plug is pulled out of the socket, so that the first protrusion structure moves away from the plug housing and disengages from the second groove.

[0011] Furthermore, the plug also includes an oil bag assembly and a head base. A first mounting cavity is provided on the plug housing, the oil bag assembly is mounted in the first mounting cavity, the head base is connected to the open end of the plug housing, and the oil bag assembly is limited in the first mounting cavity.

[0012] Furthermore, the oil bladder assembly includes an oil bladder body, an elastic member, a first support plate and a second support plate. The oil bladder body can be extended and retracted along the plugging direction of the plug. The oil bladder body has a accommodating cavity, and the accommodating cavity is filled with insulating oil. In the plugging direction of the plug, the first support plate and the second support plate are respectively arranged at two ends of the oil bladder body, and the elastic member is supported between the first support plate and the second support plate.

[0013] Furthermore, the underwater pluggable fiber optic connector also includes an optical jack assembly, a first through hole is provided on the oil bag body, second through holes are provided on the first support plate and the second support plate, the second through hole on the first support plate is provided corresponding to the first through hole on its side, the second through hole on the second support plate is provided corresponding to the first through hole on its side, and the optical jack assembly can pass through the first through hole and the second through hole.

[0014] Furthermore, the plug also includes a rear shell, a connecting structure and a limiting and fixing structure. One end of the rear shell is connected to the plug shell, and the other end of the rear shell is connected to one end of the connecting structure. The outer wall surface of the other end of the connecting structure and the inner wall surface of the limiting and fixing structure are both provided with anti-slip structures. The limiting and fixing structure is sleeved on the connecting structure, and the anti-slip structure on the outer wall surface of the connecting structure is corresponding to the anti-slip structure on the inner wall surface of the limiting and fixing structure.

[0015] Furthermore, the plug also includes a fastener and an outer sheath, the fastener is sleeved on the connecting structure, the fastener is threadedly connected to one end of the rear shell away from the connecting shell, the limiting fixing structure includes a first limiting split and a second limiting split separately arranged, the first limiting split and the second limiting split are both located on the side of the fastener away from the plug shell, one end of the first limiting split and the second limiting split are connected to the connecting structure, and the outer sheath covers the outer circumference of the first limiting split and the second limiting split.

[0016] Furthermore, the socket also includes a plug-in movable base and an elastic clamp, both of which are installed in the socket shell. The plug-in movable base can reciprocate along the axial direction of the socket shell. The elastic clamp is located on one side of the plug-in movable base close to the open end of the socket shell. One end of the elastic clamp is connected to the plug-in movable base. During the plugging process, the other end of the elastic clamp can be clamped with the plug shell.

[0017] Furthermore, a plurality of elastic structures are provided at one end of the elastic clamp away from the plug-in movable base, and the plurality of elastic structures are arranged at circumferential intervals along the elastic clamp. The elastic structure is constructed to be able to expand in a direction away from the central axis of the elastic structure under the action of external force. A first clamping protrusion is provided on the inner wall of the elastic structure, and a clamping groove capable of clamping with the first clamping protrusion is provided at one end of the connecting shell away from the protrusion.

[0018] Furthermore, the outer wall surface of the elastic structure is provided with a second snap-in protrusion, and the inner wall of the socket housing is provided with an avoidance groove. When the elastic structure opens in a direction away from the central axis of the elastic structure under the action of external force, the second snap-in protrusion is snapped into the avoidance groove.

[0019] By applying the technical solution of the utility model, a socket, a plug and an identification mechanism are provided, and the identification structure includes an actuating structure and an indicating structure. After the plugging process starts, the plug gradually approaches the location of the socket. As the plug is inserted, the actuating structure cooperates with the outer wall of the socket shell, so that the actuating structure is in a first state. At this time, the second end of the indicating structure retracts into the outer shell, and the underwater camera equipment cannot observe the existence of the second end of the indicating structure. The plug continues to be inserted. When the plug and the socket are plugged in place, the actuating structure is in a second state. At this time, the second end of the indicating structure extends out of the outer shell, and the underwater camera equipment can observe the second end of the indicating structure, thereby realizing the judgment of whether the plug and the socket are plugged in place. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 A schematic structural diagram showing an angle of a plug of an embodiment of the utility model;

[0022] Figure 2 A schematic structural diagram showing another angle of the plug of an embodiment of the utility model;

[0023] Figure 3 A schematic structural diagram of a socket according to an embodiment of the utility model is shown;

[0024] Figure 4 A schematic structural diagram of a plug housing according to an embodiment of the utility model is shown;

[0025] Figure 5 A schematic structural diagram showing another angle of the plug housing of an embodiment of the utility model;

[0026] Figure 6 Shows Figure 5 Schematic diagram of the cross section at AA;

[0027] Figure 7 A schematic structural diagram of a connecting housing according to an embodiment of the utility model is shown;

[0028] Figure 8 A schematic structural diagram of a plug-in movable base according to an embodiment of the utility model is shown;

[0029] Fig. 9 A schematic structural diagram of a base body according to an embodiment of the utility model is shown;

[0030] Fig.10 A schematic structural diagram of an elastic clamp according to an embodiment of the utility model is shown;

[0031] Fig.11 A schematic structural diagram showing another angle of the elastic clamp of an embodiment of the utility model;

[0032] Fig.12 Shows Fig.11 Schematic diagram of the cross section at BB;

[0033] Fig.13 A schematic structural diagram of a socket housing according to an embodiment of the utility model is shown;

[0034] Fig.14 Shows Fig.13 Schematic diagram of the cross section at CC;

[0035] Fig.15 A schematic diagram showing the structure of a head base according to an embodiment of the utility model; and

[0036] Fig.16 The schematic structural diagram of the rotary seal assembly of the embodiment of the utility model is shown.

[0037] The above drawings include the following reference numerals:

[0038] 1. Socket; 2. Socket housing; 3. Plug; 4. Outer housing; 5. Actuating structure; 6. Indicating structure; 7. Connecting rod; 8. Protrusion; 9. Plug housing; 10. Connecting housing; 11. First groove; 12. First protrusion structure; 13. Straight wall section; 14. Second protrusion structure; 15. Third mounting groove; 16. Second groove; 17. First inclined plane; 18. Second inclined plane; 19. Oil bag assembly; 20. Head base; 21. First mounting cavity; 22. Oil bag body; 23. Elastic member; 24. First support plate; 25. Second support plate; 26. Accommodating cavity; 27. Optical jack assembly; 28. Rear housing; 29. ​​Connecting structure; 30. Position limiting and fixing structure; 31. Plug-in and pull-out movable base; 32. Elastic clamp; 33. Elastic structure; 34. First A snap-fit ​​protrusion; 35, a snap-fit ​​groove; 36, a second snap-fit ​​protrusion; 37, an avoidance groove; 38, a socket guide sleeve; 39, an optical pin assembly; 40, a socket spring; 41, a plug double-closed fork; 42, a socket double-closed fork; 43, a semi-conductive channel; 44, a rotating paddle; 45, a rubber sleeve; 46, a rotating shaft; 47, a rotating seal assembly; 48, a circular protrusion; 49, a back plate; 50, an indicator sheet; 51, a handle; 52, a tail cover; 53, a head fixing sheet; 54, an oil-filled optical cable; 55, an anti-slip structure; 56, a fastener; 57, an outer sheath; 58, a seat base; 59, a second mounting cavity; 60, a first mounting groove; 61, a second mounting groove; 62, a through groove; 63, a connecting split; 64, a connecting groove; 65, a third mounting cavity; 66, a connecting portion. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] See also Figures 1 to 16 As shown, the utility model provides an underwater pluggable optical fiber connector, which includes: a socket 1, including a socket housing 2; a plug 3, the plug 3 including an outer housing 4; and an identification mechanism, which is installed on the plug 3, the identification mechanism includes an actuating structure 5 and an indicating structure 6, the actuating structure 5 has a first state in which the first end of the indicating structure 6 cooperates with the first end of the indicating structure 6 so that the second end of the indicating structure 6 is retracted into the outer housing 4, and a second state in which the actuating structure 5 cooperates with the first end of the indicating structure 6 so that the second end of the indicating structure 6 extends out of the outer housing 4. During the plugging process, the actuating structure 5 cooperates with the outer wall of the socket housing 2, the actuating structure 5 is in the first state, and the second end of the indicating structure 6 is retracted into the outer housing 4. After the plug 3 and the socket 1 are plugged into place, the actuating structure 5 is in the second state, and the second end of the indicating structure 6 extends out of the outer housing 4.

[0041] In this embodiment, when the underwater plug-in optical fiber connector of the present application is plugged in underwater, it needs to be used in conjunction with an underwater camera device (such as an underwater camera), and the underwater camera device is located on the side of the plug 3 away from the socket 1. After the plug-in process begins, the plug 3 gradually approaches the location of the socket 1. As the plug 3 is inserted, the actuating structure 5 cooperates with the outer wall of the socket housing 2, so that the actuating structure 5 is in the first state. At this time, the second end of the indicating structure 6 retracts into the outer housing 4, and the underwater camera device cannot observe the existence of the second end of the indicating structure 6. The plug 3 continues to be inserted. When the plug 3 and the socket 1 are plugged in place, the actuating structure 5 is in the second state. At this time, the second end of the indicating structure 6 extends out of the outer housing 4, and the underwater camera device can observe the second end of the indicating structure 6, thereby realizing the judgment of whether the plug 3 and the socket 1 are plugged in place.

[0042] In one embodiment, the actuating structure 5 is made of rubber material.

[0043] See also Figures 1 to 16 As shown, in one embodiment of the utility model, the underwater pluggable optical fiber connector further includes an underwater camera device, which is located on a side of the plug 3 away from the socket 1 , and is used to identify the indication structure 6 .

[0044] In this embodiment, the indicator structure 6 is located on the observation path of the underwater camera device. In the observation range of the underwater camera device, during the plug-in connection between the plug 3 and the socket 1, the second end of the indicator structure 6 is retracted in the outer shell 4, and the underwater camera device cannot recognize the second end of the indicator structure 6. When the plug 3 and the socket 1 are plugged in place, the underwater camera device can recognize the second end of the indicator structure 6. Through the above arrangement, the staff can judge whether the plug 3 and the socket 1 are plugged in place according to whether the underwater camera device recognizes the second end of the indicator structure 6.

[0045] See also Figures 1 to 16 As shown, in one embodiment of the present invention, the number of the identification mechanisms is at least two, and the at least two identification mechanisms are arranged at intervals along the circumference of the plug 3.

[0046] Through the above arrangement, it is possible to judge whether the plug 3 and the socket 1 are properly plugged in at multiple angles, which has higher applicability. In addition, if one of the identification mechanisms is damaged, other identification structures can be used to judge whether the plug 3 and the socket 1 are properly plugged in.

[0047] like Figures 1 to 13 As shown, in one embodiment of the utility model, the indicating structure 6 includes a connecting rod 7 and a protrusion 8, the connecting rod 7 is rotatably arranged on the outer shell 4, the protrusion 8 is installed on the end of the connecting rod 7 away from the socket 1, and a channel is provided on the outer shell 4. The actuating structure 5 cooperates with the end of the connecting rod 7 away from the protrusion 8 so that the protrusion 8 extends out of the outer shell 4 from the channel or retracts into the outer shell 4.

[0048] In this embodiment, for ease of understanding, Figure 1 The plug 3 in the figure is taken as an example to illustrate the matching relationship between the actuating structure 5 and the indicating structure 6 during the plugging process. During the plugging process, the actuating structure 5 cooperates with the end of the connecting rod 7 close to the socket 1, so that the connecting rod 7 rotates counterclockwise relative to the outer shell 4, and the end of the connecting rod 7 away from the socket 1 drives the protrusion 8 to rotate counterclockwise, so that the protrusion 8 retracts into the outer shell 4. At this time, the underwater camera equipment cannot observe the protrusion 8. When the plug 3 and the socket 1 are plugged in place, the actuating structure 5 cooperates with the end of the connecting rod 7 close to the socket 1, so that the connecting rod 7 rotates clockwise relative to the outer shell 4, and the end of the connecting rod 7 away from the socket 1 drives the protrusion 8 to rotate clockwise, so that the protrusion 8 extends out of the outer shell 4 from the channel. At this time, the underwater camera equipment can observe the protrusion 8. Through the above settings, it is possible to determine whether the plug 3 and the socket 1 are plugged in place.

[0049] In one embodiment, the protrusion 8 is a columnar structure, and the protrusion 8 is bolted to an end of the connecting rod 7 away from the socket 1 .

[0050] See also Figures 1 to 16As shown, in one embodiment of the utility model, the plug 3 also includes a plug housing 9 and a connecting housing 10, the connecting housing 10 is sleeved on the plug housing 9, the outer housing 4 is sleeved on the connecting housing 10, one end of the connecting housing 10 is connected to the outer housing 4, a first groove 11 is provided at one end of the connecting rod 7 close to the socket 1, one end of the actuating structure 5 is connected to the plug housing 9, the other end of the actuating structure 5 is inserted into the first groove 11, and can move toward or away from the connecting housing 10.

[0051] In this embodiment, a through groove 62 is provided on the connection housing 10, one end of the actuating structure 5 is connected to the outer wall of the plug housing 9, and the other end of the actuating structure 5 is inserted through the through groove 62 and then clamped in the first groove 11 to achieve connection with the end of the connecting rod 7 close to the socket 1. Before the plug 3 is plugged in, that is, when the plug 3 is in the initial state, the actuating structure 5 is clamped in the first groove 11. At this time, the end of the connecting rod 7 away from the socket 1 is tilted, and the protrusion 8 extends out of the outer housing 4 from the channel. During the plugging process, as the plug 3 is gradually inserted, at a certain moment, the actuating structure 5 cooperates with the outer wall of the socket housing 2, and the end of the actuating structure 5 clamped in the first groove 11 is tilted away from the plug housing 9, the connecting rod 7 rotates, and the end of the connecting rod 7 away from the socket 1 rotates toward the side where the plug housing 9 is located and drives the protrusion 8 to rotate toward the side where the plug housing 9 is located, so that the protrusion 8 retracts into the outer housing 4, and the underwater camera equipment cannot observe the protrusion 8. When the plug 3 and the socket 1 are plugged in place, the end of the actuating structure 5 that is inserted into the first groove 11 moves toward the side where the plug housing 9 is located, causing the connecting rod 7 to rotate, and the end of the connecting rod 7 away from the socket 1 rotates in a direction away from the plug housing 9, and drives the protrusion 8 to rotate in a direction away from the plug housing 9, so that the protrusion 8 extends out of the outer housing 4 from the channel, and the underwater camera equipment can observe the protrusion 8. Through the above arrangement, it is possible to determine whether the plug 3 and the socket 1 are plugged in place.

[0052] See also Figures 1 to 16 As shown, in one embodiment of the utility model, the underwater pluggable fiber optic connector also includes a handle 51 and a locking piece, the handle 51 includes a connecting body 63, the connecting shell 10 includes a connecting groove 64, the connecting body 63 is inserted into the connecting groove 64 and is connected to the connecting shell 10 through the locking piece.

[0053] In this embodiment, the handle 51 is connected to the connection housing 10. Since the connection housing 10 is connected to the outer housing 4, the handle 51, the connection housing 10 and the outer housing 4 can be connected together through the above arrangement. When performing a plug-in operation, the plug-in operation can be conveniently performed through the handle 51.

[0054] In one embodiment, there are multiple locking members, which are bolts. A plurality of first connecting through holes are provided on the connecting body 63, and a plurality of second connecting through holes are provided on the connecting groove 64. The plurality of first connecting through holes and the plurality of second connecting through holes are provided in one-to-one correspondence. The bolts pass through the first connecting through holes and the second connecting through holes in sequence to connect the handle 51 with the connecting shell 10.

[0055] In one embodiment, an indicator sheet 50 is provided on the handle 51 . The indicator sheet 50 is mounted on the handle 51 by screws. The indicator sheet 50 is coated with a reflective coating to facilitate observation of the position of the handle.

[0056] See also Figures 1 to 16 As shown, in one embodiment of the utility model, the actuating structure 5 includes a straight wall section 13, and the straight wall section 13 forms a first protruding structure 12 on a side facing the indicating structure 6, and forms a second protruding structure 14 on a side facing the plug housing 9. The first protruding structure 12 is clamped in the first groove 11. During the plugging process, the second protruding structure 14 abuts against the outer wall of the socket housing 2, and the second protruding structure 14 drives the first protruding structure 12 to move in a direction away from the plug housing 9, and the first protruding structure 12 drives the end of the connecting rod 7 close to the socket 1 to move in a direction away from the plug housing 9, so that the actuating structure 5 is in the first state. A second groove 16 is provided on the outer wall surface of the plug housing 9. After the plug 3 and the socket 1 are plugged into place, the second protruding structure 14 is clamped in the second groove 16, and the second protruding structure 14 drives the first protruding structure 12 to move in a direction close to the plug housing 9, and the first protruding structure 12 drives the end of the connecting rod 7 close to the socket 1 to move in a direction close to the plug housing 9, so that the actuating structure 5 is in the second state.

[0057] In this embodiment, the first protrusion structure 12 and the second protrusion structure 14 are both located at the end of the straight arm section away from the protrusion 8. The first protrusion structure 12 is clamped in the first groove 11, and can realize the connection between the end of the straight wall section 13 away from the protrusion 8 and the end of the connecting rod 7 close to the socket 1. During the plugging process, as the plug 3 is gradually inserted, at a certain moment, the second protrusion structure 14 abuts against the outer wall of the socket shell 2, and the second protrusion structure 14 drives the first protrusion structure 12 to move away from the plug shell 9, so that the first protrusion structure 12 drives the end of the connecting rod 7 close to the socket 1 to move away from the plug shell 9, so that the actuating structure 5 is in the first state. At this time, the protrusion 8 retracts into the outer shell 4, and the underwater camera equipment cannot observe the protrusion 8. When the plug 3 and the socket 1 are plugged in place, the second protrusion structure 14 is inserted into the second groove 16, and the second protrusion structure 14 drives the first protrusion structure 12 to move toward the plug housing 9, and the first protrusion structure 12 drives the end of the connecting rod 7 close to the socket 1 to move toward the plug housing 9, so that the actuating structure 5 is in the second state, at which time the protrusion 8 extends out of the outer housing 4 from the channel, and the underwater camera equipment can observe the protrusion 8. Through the above arrangement, it is possible to determine whether the plug 3 and the socket 1 are plugged in place.

[0058] See also Figures 1 to 16 As shown, in one embodiment of the utility model, the first protrusion structure 12 has a first inclined surface 17 on the side facing the plug housing 9, and the connecting housing 10 includes a second inclined surface 18, and the second inclined surface 18 is constructed to cooperate with the second inclined surface 18 during the process of pulling the plug 3 out of the socket 1, so that the first protrusion structure 12 moves in a direction away from the plug housing 9 and disengages from the second groove 16.

[0059] In this embodiment, the slope of the second inclined surface 18 increases in the direction away from the straight arm section. When the plug 3 is pulled out from the socket 1, the handle 51 drives the plug 3 to move in the direction away from the socket 1. At a certain moment, the second inclined surface 18 of the connecting shell 10 moves below the first inclined surface 17. As the plug 3 continues to be pulled out, the first inclined surface 17 of the first protruding structure 12 moves along the second inclined surface 18 of the connecting shell 10, so that the first protruding structure 12 moves in the direction away from the plug shell 9 and can be disengaged from the second groove 16 to achieve separation from the socket 1.

[0060] See also Figures 1 to 16 As shown, in one embodiment of the utility model, the plug 3 also includes an oil bag assembly 19 and a head base 20. A first mounting cavity 21 is provided on the plug housing 9. The oil bag assembly 19 is installed in the first mounting cavity 21. The head base 20 is connected to the open end of the plug housing 9 and limits the oil bag assembly 19 in the first mounting cavity 21.

[0061] In this embodiment, the oil bag assembly 19 is installed in the first installation cavity 21 , and the head base 20 is installed at the open end of the plug housing 9 to prevent the oil bag assembly 19 from falling out of the first installation cavity 21 .

[0062] See also Figures 1 to 16 As shown, in one embodiment of the utility model, the oil bladder assembly 19 includes an oil bladder body 22, an elastic member 23, a first support plate 24 and a second support plate 25. The oil bladder body 22 can be extended and retracted along the plugging direction of the plug 3. The oil bladder body 22 has a accommodating cavity 26, and the accommodating cavity 26 is filled with insulating oil. In the plugging direction of the plug 3, the first support plate 24 and the second support plate 25 are respectively arranged at both ends of the oil bladder body 22, and the elastic member 23 is supported between the first support plate 24 and the second support plate 25.

[0063] In this embodiment, the accommodating cavity 26 is used to hold insulating oil, and the elastic member 23 is supported between the first support plate 24 and the second support plate 25, so that the first support plate 24 and the second support plate 25 are respectively abutted against the two ends of the oil sac body 22, and then the two ends of the oil sac body 22 are respectively abutted against the bottom wall of the first mounting cavity 21 and one end of the head base 20 facing the oil sac body 22, thereby achieving sealing and preventing the insulating oil in the accommodating cavity 26 from flowing into the first mounting cavity 21.

[0064] In one embodiment, a first guide column is provided on the first support plate 24, and the first guide column extends from the first support plate 24 to the direction close to the second support plate 25. A second guide column is provided on the second support plate 25, and the second guide column extends from the second support plate 25 to the direction close to the first support plate 24. One end of the elastic member 23 is sleeved on the first guide column, and the other end of the elastic member 23 is sleeved on the second guide column. There is a certain gap between the first guide column and the second guide column to ensure that the oil bag body 22 can be normally extended and retracted. The setting of the first guide column and the second guide column can both limit the elastic member 23 and guide the elastic member 23.

[0065] In one embodiment, there are multiple elastic members 23, multiple first guide posts and multiple second guide posts, and each elastic member 23 corresponds to one first guide post and one second guide post. The arrangement of multiple elastic members 23 can improve the supporting effect on the first support plate 24 and the second support plate 25.

[0066] In one embodiment, the elastic member 23 is a spring.

[0067] See also Figures 1 to 16As shown, in one embodiment of the utility model, the underwater pluggable fiber optic connector also includes an optical jack assembly 27, a first through hole is provided on the oil bag body 22, and a second through hole is provided on the first support plate 24 and the second support plate 25. The second through hole on the first support plate 24 is arranged corresponding to the first through hole located on the side thereof, and the second through hole on the second support plate 25 is arranged corresponding to the first through hole located on the side thereof, and the optical jack assembly 27 can pass through the first through hole and the second through hole.

[0068] In this embodiment, the socket housing 2 also includes a partition plate and a tail cover plate 52. The partition plate is arranged in the inner cavity of the socket housing 2 to divide the inner cavity of the socket housing 2 into a first mounting cavity 21 and a second mounting cavity 59 which are independent of each other. The tail cover plate 52 is installed in the second mounting cavity 59. The partition plate is provided with a plurality of through holes for the optical jack assembly 27 to pass through. The plurality of through holes are arranged corresponding to the first through hole. One end of the optical jack assembly 27 is immersed in the insulating oil in the accommodating cavity 26. The other end of the optical jack assembly 27 is fixedly connected to the tail cover plate 52 after passing through the through hole. In addition, an O-ring is provided at one end of the optical jack assembly 27 that passes through the through hole to achieve sealing and prevent the insulating oil in the oil bag body 22 from flowing through the second through hole, the first through hole, and the through hole in sequence and then entering the second mounting cavity 59.

[0069] See also Figures 1 to 16 As shown, in one embodiment of the utility model, the plug 3 also includes a rear shell 28, a connecting structure 29 and a limiting fixing structure 30, one end of the rear shell 28 is connected to the plug shell 9, and the other end of the rear shell 28 is connected to one end of the connecting structure 29, and the outer wall surface of the other end of the connecting structure 29 and the inner wall surface of the limiting fixing structure 30 are both provided with an anti-slip structure 55, and the limiting fixing structure 30 is sleeved on the connecting structure 29, and the anti-slip structure 55 on the outer wall surface of the connecting structure 29 is correspondingly arranged with the anti-slip structure 55 on the inner wall surface of the limiting fixing structure 30.

[0070] In this embodiment, when it is necessary to connect an external optical cable (such as an oil-filled optical cable 54), the oil-filled optical cable 54 is sleeved on the end of the connecting structure 29 away from the plug housing 9, and then the limiting and fixing structure 30 is sleeved on the outer periphery of the oil-filled optical cable 54 by crimping. The limiting and fixing structure 30 cooperates with the connecting structure 29 to clamp the oil-filled optical cable 54. The anti-slip structure 55 on the outer wall surface of the connecting structure 29 and the anti-slip structure 55 on the inner wall surface of the limiting and fixing structure 30 can increase the friction between the oil-filled optical cable 54, prevent the oil-filled optical cable 54 from slipping, and improve the connection stability.

[0071] In one embodiment, the anti-slip structure 55 is a sawtooth structure or a plurality of protrusions arranged at intervals.

[0072] See also Figures 1 to 16As shown, in one embodiment of the utility model, the plug 3 also includes a fastener 56 and an outer sheath 57. The fastener 56 is sleeved on the connecting structure 29. The fastener 56 is threadedly connected to the end of the rear shell 28 away from the connecting shell 10. The limiting fixing structure 30 includes a first limiting split and a second limiting split that are separately arranged. The first limiting split and the second limiting split are both located on the side of the fastener 56 away from the plug shell 9. One end of the first limiting split and the second limiting split are connected to the connecting structure 29, and the outer sheath 57 covers the outer periphery of the first limiting split and the second limiting split.

[0073] In this embodiment, a third mounting cavity 65 is provided at one end of the rear shell 28 away from the plug shell 9, one end of the connecting structure 29 is inserted into the third mounting cavity 65, the connecting structure 29 is cylindrical, and a plurality of sealing rings are provided between the connecting structure 29 and the inner wall of the third mounting cavity 65. The fastener 56 is sleeved on the connecting structure 29 and cooperates with the inner wall thread of the third mounting cavity 65 to connect the connecting structure 29 to the rear shell 28. When it is necessary to connect an external optical cable (such as an oil-filled optical cable 54), the oil-filled optical cable 54 is sleeved on the end of the connecting structure 29 away from the plug housing 9, and then the first limiting split and the second limiting split are connected to the connecting structure 29. The first limiting split and the second limiting split cooperate with the connecting structure 29 to clamp the oil-filled optical cable 54. Finally, the outer sheath 57 is tightly covered on the outer periphery of the first limiting split and the second limiting split. The setting of the outer sheath 57 can, on the one hand, protect the connection position, and on the other hand, can limit the first limiting split and the second limiting split to prevent the oil-filled optical cable 54 from slipping and improve the connection stability.

[0074] In addition, the first limiting split body and the second limiting split body are independent of each other. In the process of connecting the oil-filled optical cable 54, the oil-filled optical cable 54 is firstly sleeved on the connecting structure 29, and then the first limiting split body and the second limiting split body are covered on the outer periphery of the oil-filled optical cable 54 and connected to the connecting structure 29. On the one hand, it can match optical cables of different diameters and improve the compatibility of the underwater plug-in optical fiber connector with the optical cable. On the other hand, it is convenient for disassembly, which is convenient for the maintenance of the optical cable and on-site construction.

[0075] See also Figures 1 to 16 As shown, in one embodiment of the utility model, the socket 1 also includes a plug-in movable base 31 and an elastic clamp 32. The plug-in movable base 31 and the elastic clamp 32 are both installed in the socket housing 2. The plug-in movable base 31 can reciprocate along the axial direction of the socket housing 2. The elastic clamp 32 is located on one side of the plug-in movable base 31 close to the open end of the socket housing 2. One end of the elastic clamp 32 is connected to the plug-in movable base 31. During the plug-in process, the other end of the elastic clamp 32 can be clamped with the plug housing 9.

[0076] In this embodiment, one end of the elastic clamp 32 is connected to the plug-in movable base 31, and the elastic clamp 32 can reciprocate along the axial direction of the socket housing 2 with the plug-in movable base 31. During the plug-in process, the other end of the elastic clamp 32 can be clamped with the plug housing 9.

[0077] See also Figures 1 to 16 As shown, in one embodiment of the utility model, a plurality of elastic structures 33 are provided at one end of the elastic clamp 32 away from the plug-in movable base 31, and the plurality of elastic structures 33 are arranged at circumferential intervals along the elastic clamp 32. The elastic structure 33 is constructed to be able to open in a direction away from the central axis of the elastic structure 33 under the action of an external force, and a first clamping protrusion 34 is provided on the inner wall of the elastic structure 33. A clamping groove 35 capable of clamping and cooperating with the first clamping protrusion 34 is provided at one end of the connecting shell 10 away from the protrusion 8.

[0078] In this embodiment, during the plugging process, as the plug 3 is inserted, the end of the socket housing 2 away from the protrusion 8 enters the elastic clamp 32 and applies an extrusion force to the elastic structure 33, so that the elastic structure 33 opens in a direction away from the central axis of the elastic structure 33. The plug 3 continues to be inserted. At a certain moment, the first clamping protrusion 34 on the inner wall of the elastic structure 33 is clamped into the clamping groove 35, thereby realizing the connection between the elastic clamp 32 and the plug housing 9.

[0079] See also Figures 1 to 16 As shown, in one embodiment of the utility model, the outer wall surface of the elastic structure 33 is provided with a second snap-in protrusion 36, and the inner wall of the socket housing 2 is provided with an avoidance groove 37. When the elastic structure 33 opens in a direction away from the central axis of the elastic structure 33 under the action of an external force, the second snap-in protrusion 36 is snapped into the avoidance groove 37.

[0080] In this embodiment, during the plugging process, as the plug 3 is inserted, the end of the socket housing 2 away from the protrusion 8 enters the elastic clamp 32 and applies an extrusion force to the elastic structure 33, so that the elastic structure 33 opens in a direction away from the central axis of the elastic structure 33. At this time, the second clamping protrusion 36 on the outer wall of the elastic structure 33 is clamped into the avoidance groove 37, and the avoidance groove 37 is set to provide avoidance space for the opening of the elastic structure 33.

[0081] In one embodiment, the underwater pluggable optical fiber connector further comprises an optical pin assembly 39, a back plate 49, a plug double-gate fork 41, a socket double-gate fork 42, a seat base 58, a head fixing plate 53, a socket guide sleeve 38, a socket spring 40, and at least two rotating sealing assemblies 47. The socket housing 2 comprises a third mounting cavity 65 and a connecting portion 66. The back plate 49 is fixedly mounted in the third mounting cavity 65. One end of the optical pin assembly 39, the plug double-gate fork 41, and the socket double-gate fork 42 passes through the connecting portion 66 and is fixedly connected to the back plate 49 through fasteners. Sealing is achieved between the optical pin assembly 39 and the connecting portion 66, between the plug double-gate fork 41 and the connecting portion 66, and between the socket double-gate fork 42 and the connecting portion 66 through sealing rings. The rotary seal assembly 47 includes a rotating shaft 46, a rubber sleeve 45 and a rotating paddle 44. The rubber sleeve 45 is coated on the outer periphery of the rotating shaft 46. The rotating paddle 44 is arranged at one end of the rotating shaft 46. The base body 58 is mounted on the plug-in movable base body 31. The base body 58 is provided with a first mounting hole. The plug-in movable base body 31 is provided with a first mounting groove 60. The first end of the rotating shaft 46 is mounted in the first mounting groove 60. The second end of the rotating shaft 46 is penetrated in the second mounting groove 61. The second end of the rotating shaft 46 has a square column section. The rotating paddle 44 has a rectangular hole matched with the square column section so that the rotating paddle 44 can be installed at the second end of the rotating shaft 46. The rotating shaft 46 is provided with a plurality of semi-conductive channels 43. The rubber sleeve 45 is provided with through holes corresponding to the plurality of semi-conductive channels 43. The rotating shaft 46 coated with the rubber sleeve 45 and the first mounting groove 60 are interference fit to achieve sealing. One end of the socket spring 40 abuts against the connecting portion 66, and the other end of the socket spring 40 is connected to an end of the plug-in movable base 31 facing away from the plug 3. When the plug 3 is inserted, the spring is compressed, and when the plug 3 is withdrawn, the spring rebounds and pushes the plug-in movable base 31 back to its initial position.

[0082] The head base 20 is provided with a rotary seal assembly 47, and the number of the rotary seal assembly 47 is the same as the number of the rotary seal assembly 47 installed on the plug-in movable base 31. The head base 20 is provided with a third mounting groove 15, and the head fixing plate 53 is installed on the head base 20. The head fixing plate 53 is provided with a fourth mounting groove. One end of the rotating shaft 46 is installed in the third mounting groove 15, and is an interference fit with the third mounting groove 15. The other end of the rotating shaft 46 is installed in the fourth mounting groove, and is also an interference fit. During the plug-in process of the plug 3, the plug double-check fork 41 cooperates with the rotary fork of the rotating shaft 46 installed on the head base 20 to drive the rotating shaft 46 to rotate. The shaft 46 rotates around its own axis, and the socket double-gate fork 42 cooperates with the rotating fork of the rotating shaft 46 installed on the plug-in movable base 31, driving the rotating shaft 46 to rotate around its own axis, so that the semi-conductive channel 43 of the rotating shaft 46 installed on the head base 20 rotates toward the optical socket assembly 27, and the semi-conductive channel 43 of the rotating shaft 46 installed on the plug-in movable base 31 rotates toward the optical pin assembly 39. At this time, the semi-conductive channel 43 of the rotating shaft 46 installed on the head base 20 is docked with the semi-conductive channel 43 of the rotating shaft 46 installed on the plug-in movable base 31, so that the docking of the optical pin assembly 39 and the optical socket assembly 27 can be realized. An oil bag assembly 19 is provided at one end of the plug-in movable base 31 which faces away from the plug 3. The end of the optical pin assembly 39 which faces away from the back plate 49 can pass through the oil bag assembly 19 and then pass out from the semi-conductive channel 43 of the rotating shaft 46 installed on the plug-in movable base 31. The specific structure of the oil bag assembly 19 is the same as the structure of the oil bag assembly 19 installed in the first installation cavity 21, and will not be repeated here. One end of the oil bag body 22 has a circular protrusion 48. When the oil bag assembly 19 is installed on the plug-in movable base 31, the circular protrusion 48 can be squeezed against the plug-in movable base 31 to ensure sealing. The socket housing 2 is installed in the socket guide sleeve 38. The end of the socket guide sleeve 38 away from the back plate 49 is designed to be funnel-shaped, so that when the plug 3 is inserted at a certain angle, it can still be plugged in without being damaged. The head base 20 is fixed to the plug housing 9 by fasteners.

[0083] In one embodiment, the plugging process of the plug 3 and the socket 1 is as follows:

[0084] The handle 51 drives the plug 3 forward. As the plug 3 is gradually inserted, the second protruding structure 14 abuts against the outer wall of the socket housing 2. The second protruding structure 14 drives the first protruding structure 12 to move away from the plug housing 9, so that the first protruding structure 12 drives the end of the connecting rod 7 close to the socket 1 to move away from the plug housing 9. The protrusion 8 retracts into the outer shell 4, and the underwater camera equipment cannot observe the protrusion 8. Then the plug 3 enters the socket housing 2. The end of the socket housing 2 away from the protrusion 8 enters the elastic clamp 32 and applies a squeezing force to the elastic structure 33, so that the elastic structure 33 opens in a direction away from the central axis of the elastic structure 33. The plug 3 continues to be inserted, and the first clamping protrusion 34 on the inner wall of the elastic structure 33 is clamped into the clamping groove 35 to achieve the connection between the elastic clamp 32 and the plug housing 9. The plug 3 continues to move forward, and the plug double-check fork 41 cooperates with the rotating fork of the rotating shaft 46 installed on the head base 20, driving the rotating shaft 46 to rotate around its own axis, so that the semiconductor The through channel 43 rotates from perpendicular to the axis of the rotating shaft 46 to parallel to its own axis, and the socket double-gate fork 42 cooperates with the rotating fork of the rotating shaft 46 installed on the plug-in movable base 31, driving the rotating shaft 46 to rotate around its own axis, so that the semi-conductive channel 43 rotates from a position perpendicular to the axis of the rotating shaft 46 to a position parallel to its own axis. At this time, the semi-conductive channel 43 of the rotating shaft 46 installed on the head base 20 is docked with the semi-conductive channel 43 of the rotating shaft 46 installed on the plug-in movable base 31, so as to realize the docking of the optical pin assembly 39 and the optical socket assembly 27. As the plug 3 continues to go deeper into the socket housing 2, the second protrusion structure 14 is inserted into the second groove 16, and the second protrusion structure 14 drives the first protrusion structure 12 to move toward the plug housing 9. The first protrusion structure 12 drives the end of the connecting rod 7 close to the socket 1 to move toward the plug housing 9. The protrusion 8 extends out of the outer housing 4 from the channel, and the underwater camera equipment can observe the protrusion 8. At this time, the plug 3 is plugged into the socket 1.

[0085] In one embodiment, the rotating shaft 46 and the rubber sleeve 45 are integrally injection molded.

[0086] From the above description, it can be seen that the above-mentioned embodiments of the utility model achieve the following technical effects: a socket, a plug and an identification mechanism are provided, the identification structure includes an actuating structure and an indicating structure, after the plugging process starts, the plug gradually approaches the location of the socket, and as the plug is inserted, the actuating structure cooperates with the outer wall of the socket shell, so that the actuating structure is in a first state, at this time, the second end of the indicating structure retracts into the outer shell, and the underwater camera equipment cannot observe the existence of the second end of the indicating structure, and the plug continues to be inserted. When the plug and the socket are plugged in place, the actuating structure is in a second state, at this time, the second end of the indicating structure extends out of the outer shell, and the underwater camera equipment can observe the second end of the indicating structure, thereby realizing the judgment of whether the plug and the socket are plugged in place.

[0087] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0088] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0089] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An underwater pluggable optical fiber connector, characterized in that: include: A socket (1) comprising a socket housing (2); A plug (3), the plug (3) comprising an outer shell (4); as well as An identification mechanism is mounted on the plug (3), the identification mechanism comprising an actuating structure (5) and an indicating structure (6), the actuating structure (5) having a first state in which the first end of the indicating structure (6) is matched with the first end of the indicating structure (6) so that the second end of the indicating structure (6) is retracted into the outer shell (4), and a second state in which the first end of the indicating structure (6) is matched with the first end of the indicating structure (6) so that the second end of the indicating structure (6) is extended out of the outer shell (4). During the plugging process, the actuating structure (5) is matched with the outer wall of the socket shell (2), the actuating structure (5) is in the first state, and the second end of the indicating structure (6) is retracted into the outer shell (4); after the plug (3) and the socket (1) are plugged into place, the actuating structure (5) is in the second state, and the second end of the indicating structure (6) is extended out of the outer shell (4).

2. The underwater pluggable optical fiber connector according to claim 1, characterized in that: The underwater pluggable optical fiber connector further comprises an underwater camera device, the underwater camera device being located on a side of the plug (3) away from the socket (1), the underwater camera device being used to identify the indication structure (6); and / or the number of the identification mechanisms is at least two, and at least two of the identification mechanisms are arranged at intervals along the circumference of the plug (3).

3. The underwater pluggable optical fiber connector according to claim 1, characterized in that: The indicating structure (6) comprises a connecting rod (7) and a protrusion (8); the connecting rod (7) is rotatably arranged on the outer shell (4); the protrusion (8) is installed at an end of the connecting rod (7) away from the socket (1); a channel is arranged on the outer shell (4); the actuating structure (5) cooperates with the end of the connecting rod (7) away from the protrusion (8) so that the protrusion (8) extends out of the outer shell (4) from the channel or retracts into the outer shell (4).

4. The underwater pluggable optical fiber connector according to claim 3, characterized in that: The plug (3) further comprises a plug housing (9) and a connection housing (10), wherein the connection housing (10) is sleeved on the plug housing (9), the outer housing (4) is sleeved on the connection housing (10), one end of the connection housing (10) is connected to the outer housing (4), a first groove (11) is provided at one end of the connection rod (7) close to the socket (1), one end of the actuating structure (5) is connected to the plug housing (9), the other end of the actuating structure (5) is inserted into the first groove (11) and can move towards or away from the connection housing (10); and / or the underwater pluggable optical fiber connector further comprises a handle and a locking member, wherein the handle comprises a connection split body (63), the connection housing (10) comprises a connection groove (64), the connection split body (63) is inserted into the connection groove (64) and is connected to the connection housing (10) through the locking member.

5. The underwater pluggable optical fiber connector according to claim 4, characterized in that: The actuating structure (5) comprises a straight wall section (13), the straight wall section (13) forms a first protruding structure (12) on a side facing the indicating structure (6), and the straight wall section (13) forms a second protruding structure (14) on a side facing the plug housing (9), the first protruding structure (12) is clamped in the first groove (11), and during the plugging process, the second protruding structure (14) abuts against an outer wall of the socket housing (2), the second protruding structure (14) drives the first protruding structure (12) to move in a direction away from the plug housing (9), and the first protruding structure (12) drives the connecting rod (7) to move closer to the socket (1). One end of the connecting rod (7) moves in a direction away from the plug housing (9) so that the actuating structure (5) is in the first state. A second groove (16) is provided on the outer wall surface of the plug housing (9). After the plug (3) and the socket (1) are plugged into place, the second protrusion structure (14) is inserted into the second groove (16). The second protrusion structure (14) drives the first protrusion structure (12) to move in a direction close to the plug housing (9). The first protrusion structure (12) drives the end of the connecting rod (7) close to the socket (1) to move in a direction close to the plug housing (9), so that the actuating structure (5) is in the second state.

6. The underwater pluggable optical fiber connector according to claim 5, characterized in that: The first protruding structure (12) has a first inclined surface (17) on a side facing the plug housing (9), and the connecting housing (10) includes a second inclined surface (18), and the second inclined surface (18) is configured to cooperate with the first inclined surface (17) when the plug (3) is pulled out of the socket (1), so that the first protruding structure (12) moves in a direction away from the plug housing (9) and escapes from the second groove (16).

7. The underwater pluggable optical fiber connector according to claim 4, characterized in that: The plug (3) further comprises an oil bag assembly (19) and a head base (20); a first mounting cavity (21) is provided on the plug housing (9); the oil bag assembly (19) is mounted in the first mounting cavity (21); the head base (20) is connected to an open end of the plug housing (9) and limits the oil bag assembly (19) in the first mounting cavity (21).

8. The underwater pluggable optical fiber connector according to claim 7, characterized in that: The oil sac assembly (19) comprises an oil sac body (22), an elastic member (23), a first support plate (24) and a second support plate (25); the oil sac body (22) is capable of extending and retracting along the plugging direction of the plug (3); the oil sac body (22) has a receiving cavity (26) in which insulating oil is contained; in the plugging direction of the plug (3), the first support plate (24) and the second support plate (25) are respectively arranged at two ends of the oil sac body (22); and the elastic member (23) is supported between the first support plate (24) and the second support plate (25).

9. The underwater pluggable optical fiber connector according to claim 8, characterized in that: The underwater pluggable optical fiber connector further comprises an optical jack assembly (27); the oil bag body (22) is provided with a first through hole; the first support plate (24) and the second support plate (25) are both provided with a second through hole; the second through hole on the first support plate (24) is arranged correspondingly to the first through hole located on the side thereof; the second through hole on the second support plate (25) is arranged correspondingly to the first through hole located on the side thereof; and the optical jack assembly (27) is capable of passing through the first through hole and the second through hole.

10. The underwater pluggable optical fiber connector according to claim 4, characterized in that: The plug (3) further comprises a rear shell (28), a connecting structure (29) and a position-limiting and fixing structure (30); one end of the rear shell (28) is connected to the plug shell (9); the other end of the rear shell (28) is connected to one end of the connecting structure (29); the outer wall surface of the other end of the connecting structure (29) and the inner wall surface of the position-limiting and fixing structure (30) are both provided with an anti-slipping structure (55); the position-limiting and fixing structure (30) is sleeved on the connecting structure (29); the anti-slipping structure (55) on the outer wall surface of the connecting structure (29) and the anti-slipping structure (55) on the inner wall surface of the position-limiting and fixing structure (30) are arranged correspondingly.

11. The underwater pluggable optical fiber connector according to claim 10, characterized in that: The plug (3) further comprises a fastener (56) and an outer sheath (57), wherein the fastener (56) is sleeved on the connecting structure (29), and the fastener (56) is threadedly connected to one end of the rear shell (28) away from the connecting shell (10), and the limiting fixing structure (30) comprises a first limiting split body and a second limiting split body which are separately arranged, wherein the first limiting split body and the second limiting split body are both located on a side of the fastener (56) away from the plug shell (9), one end of the first limiting split body and the second limiting split body are connected to the connecting structure (29), and the outer sheath (57) covers the outer periphery of the first limiting split body and the second limiting split body.

12. The underwater pluggable optical fiber connector according to claim 4, characterized in that: The socket (1) further comprises a plug-in movable base (31) and an elastic clamp (32), wherein the plug-in movable base (31) and the elastic clamp (32) are both mounted in the socket housing (2), the plug-in movable base (31) can reciprocate along the axial direction of the socket housing (2), the elastic clamp (32) is located on a side of the plug-in movable base (31) close to an open end of the socket housing (2), one end of the elastic clamp (32) is connected to the plug-in movable base (31), and during the plugging process, the other end of the elastic clamp (32) can be clamped with the plug housing (9).

13. The underwater pluggable optical fiber connector according to claim 12, characterized in that: A plurality of elastic structures (33) are arranged at one end of the elastic clamp (32) away from the plug-in movable base (31), and the plurality of elastic structures (33) are arranged at intervals along the circumference of the elastic clamp (32). The elastic structure (33) is constructed to be able to open in a direction away from the central axis of the elastic structure (33) under the action of an external force, and a first clamping protrusion (34) is arranged on the inner wall of the elastic structure (33). A clamping groove (35) capable of clamping and cooperating with the first clamping protrusion (34) is arranged at one end of the connecting shell (10) away from the protrusion (8).

14. The underwater pluggable optical fiber connector according to claim 13, characterized in that: The outer wall surface of the elastic structure (33) is provided with a second locking protrusion (36), and the inner wall of the socket housing (2) is provided with an avoidance groove (37). When the elastic structure (33) opens in a direction away from the central axis of the elastic structure (33) under the action of an external force, the second locking protrusion (36) is locked into the avoidance groove (37).

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