Underwater connector

Abstract

According to the underwater connector, the mounting positioning plate is additionally arranged, the tail of the push rod is fixed to the second end wall, the side wall of the push rod is fixedly connected with the mounting positioning plate, constraint on the push rod is increased from the side face, the push rod is prevented from rotating around the axis of the push rod, meanwhile, shaking of the push rod is relieved, and the structure of the push rod is more stable. Besides, the three push rods distributed in the shape like the Chinese character'pin 'are adopted and matched with the T-shaped installation positioning plate, so that the three push rods can be more reasonably arranged in a relatively small range, the size of the whole connector is effectively reduced, and the connector is more compact.

Description

Technical Field

[0001] The invention relates to the field of connectors, and in particular to an underwater connector. Background Art

[0002] The description in this section merely provides background information related to the present disclosure and does not constitute prior art.

[0003] As a link connecting underwater equipment, underwater connectors have become irreplaceable core components in large-scale marine engineering applications such as seabed observation networks, marine resource development, national defense and military, salvage and rescue, and deep-sea scientific research platforms. Due to the harsh deep-sea environment and the complexity of underwater facilities, it is difficult to repair them after damage, the maintenance cycle is long, and the loss is large. According to the particularity of the deep-sea working environment, underwater connectors should have reliable sealing, corrosion resistance, and dynamic pressure compensation functions, which are the key issues that need to be solved in the existing technology.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present invention and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the present invention. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an underwater connector.

[0006] In order to solve the above technical problems, the present application provides an underwater connector, including a plug assembly and a socket assembly that can be plugged into each other, the plug assembly including a cylindrical plug housing, a first insulating base arranged in the plug housing, the front end surface of the first insulating base having at least one first mounting groove, the socket assembly including a cylindrical socket housing, a second insulating base arranged in the socket housing, the second insulating base being able to move forward along the socket housing under the action of an external force, the socket housing having a second end wall, the second insulating base being located at the rear side of the second end wall, the rear end surface of the second insulating base having at least one second mounting groove, cylindrical roller seals being installed in both the first mounting groove and the second mounting groove, the roller seal in the first mounting groove being arranged correspondingly to the roller seal in the second mounting groove, the roller seal including a roller and a sealing sleeve covering the outside of the roller, the direction of the roller being located being perpendicular to the axial direction of the connector, the roller being installed with a convex piece, the convex piece being used to drive the roller seal when being moved by an external force Rotating around the roller, the first insulating base and the second insulating base are axially provided with aligned channels, the protrusion of the roller seal extends into the channel, the socket assembly also includes a push rod assembly, the push rod assembly includes at least one push rod, the tail of the push rod is fixed on the second end wall, the push rod assembly also includes a mounting positioning plate, the side wall of the push rod is fixed on the mounting positioning plate, the end of the push rod passes through the channel of the second insulating base, when the plug assembly and the socket assembly are docked, the second insulating base moves forward under the squeezing of the first insulating base, the end of the push rod extends into the channel of the first insulating base, and the push rod can push the protrusion during the movement in the channel to rotate the roller seal.

[0007] Preferably, the push rod assembly includes three push rods, namely a first push rod, a second push rod and a third push rod, the tails of the first push rod, the second push rod and the third push rod are fixed to the second end wall by a first screw, a second screw and a third screw respectively, and the side walls of the tails of the first push rod, the second push rod and the third push rod are fixedly connected to the side edges of the mounting positioning plate by a fourth screw, a fifth screw and a sixth screw respectively.

[0008] Preferably, the first push rod, the second push rod and the third push rod are arranged in a T-shape, and the mounting positioning plate is T-shaped. The mounting positioning plate has a transverse rod portion and a longitudinal rod portion perpendicular to the transverse rod portion. The left and right side edges of the transverse rod portion are respectively fixedly connected to the tail side walls of the second push rod and the third push rod, and the end side edges of the longitudinal rod portion are fixedly connected to the tail side wall of the first push rod, and the mounting positioning plate is in contact with the second end wall.

[0009] Preferably, two roller seals are installed on the first insulating base, namely the first roller seal and the second roller seal, and the first insulating base is provided with three channels along the axial direction, namely the first channel, the second channel and the third channel, and the protrusions of the first roller seal and the second roller seal extend into the first channel. Two roller seals are also installed on the second insulating base, namely the third roller seal and the fourth roller seal, and when the plug assembly and the socket assembly are docked, the first roller seal is docked with the fourth roller seal, and the second roller seal is docked with the third roller seal, and the second insulating base is also provided with three channels along the axial direction, namely the fourth channel, the fifth channel and the fourth channel. Six channels, the protrusion of the third roller seal extends into the fifth channel, the protrusion of the fourth roller seal extends into the sixth channel, the first channel is axially aligned with the fourth channel, the second channel is axially aligned with the fifth channel, the third channel is axially aligned with the sixth channel, the head of the first push rod passes through the fourth channel, the head of the second push rod passes through the fifth channel, and the head of the third push rod passes through the sixth channel. When the plug assembly and the socket assembly are docked, the first push rod extends from the fourth channel and enters the first channel, the second push rod extends from the fifth channel and enters the second channel, and the third push rod extends from the sixth channel and enters the third channel.

[0010] Preferably, a plurality of first optical fiber assemblies are provided in the plug housing, a plurality of second mounting holes are opened in the axial direction of the first insulating base, the first optical fiber assembly can pass through the second mounting holes, the front end of the second mounting hole is located in the first mounting groove, a plurality of second optical fiber assemblies are provided in the socket housing, a plurality of fourth mounting holes are opened in the axial direction of the second insulating base, the second optical fiber assembly can pass through the fourth mounting holes, the rear end of the fourth mounting hole is located in the second mounting groove, the roller seal is opened in its own radial direction with a plurality of mutually parallel through holes, and the roller seal installed in the first mounting groove has a sealing position and an open position, when the roller seal is in the sealing position, the surface of the sealing sleeve seals the front end of the second mounting hole, and when the roller seal is rotated to the open position, the through hole of the roller seal is parallel to the axial direction of the plug assembly, and the through hole of the roller seal is connected and aligned with the second mounting hole one by one; the roller seal installed in the second mounting groove also has a sealing position and an open position, when the roller seal is in the sealing position, the surface of the sealing sleeve seals the rear end of the fourth mounting hole, and when the roller seal is rotated to the open position, the through hole of the roller seal is parallel to the axial direction of the socket assembly, and the through hole of the roller seal is connected and aligned with the fourth mounting hole one by one.

[0011] Preferably, the first push rod is provided with a first notch and a second notch, the second push rod is provided with a third notch, and the head of the third push rod is provided with a fourth notch. In the process of plugging the plug assembly into the socket assembly, the first notch and the second notch are respectively used to move the convex pieces of the first roller seal and the second roller seal, so that the first roller seal and the second roller seal are rotated from the sealed position to the open position; the third notch is used to move the convex piece of the third roller seal, so that the third roller seal is rotated from the sealed position to the open position; the fourth notch is used to move the convex piece of the fourth roller seal, so that the fourth roller seal is rotated from the sealed position to the open position; in the process of pulling the plug assembly out of the socket assembly, the first notch and the second notch are respectively used to move the first roller seal and the second The protrusion of the roller seal causes the first roller seal and the second roller seal to rotate from the open position to the sealed position; the third recess is used to move the protrusion of the third roller seal to rotate the third roller seal from the open position to the sealed position; the fourth recess is used to move the protrusion of the fourth roller seal to rotate the fourth roller seal from the open position to the sealed position. When the plug assembly and the socket assembly are docked, the roller seal in the first mounting groove is connected and aligned with the through hole of the roller seal in the corresponding second mounting groove one by one, and the corresponding second mounting holes, the through holes of the roller seal and the fourth mounting holes are aligned with each other and connected to each other to form an optical fiber docking channel extending axially, and the end of the second optical fiber assembly can pass through the optical fiber docking channel to dock with the first optical fiber assembly.

[0012] Preferably, the roller is also equipped with a torsion spring, and the torsion spring is used to apply a restoring force to the roller seal so that the roller seal can return to the sealing position when the roller seal leaves the sealing position due to external force.

[0013] Preferably, the plug housing comprises a first end wall, a first insulating base is located on the front side of the first end wall, a plug cavity is formed between the first insulating base and the first end wall, at least one first drainage hole is opened in the position of the plug housing located in the plug cavity, the plug cavity is connected with the external environment through the first drainage hole, a first support plate and a second support plate are arranged in the plug cavity, a first spring is installed between the first support plate and the second support plate, a first pressure compensation bag is also arranged in the plug cavity, the first pressure compensation bag is arranged around the plug cavity, the two ends of the first spring squeeze the first support plate and the second support plate respectively, the first support plate and the second support plate respectively press the first pressure compensation bag against the front and rear end surfaces of the plug cavity, a closed first oil chamber is formed inside the first pressure compensation bag, the first end wall is opened with a plurality of first mounting holes along the axial direction, the plurality of second mounting holes correspond to the plurality of first mounting holes one by one and are aligned in the axial direction, and the first optical fiber assembly passes through the first mounting holes in sequence from back to front. The first optical fiber assembly comprises a first optical fiber, a first optical fiber tube coated on the outer wall of the first optical fiber, a first optical fiber sheath coated on the tail of the first optical fiber tube, and a first ceramic ferrule connected to the head of the first optical fiber. The tail end of the first ceramic ferrule is coated in the first optical fiber tube, and the front outer wall of the first ceramic ferrule is coated with a ceramic sleeve. The side wall of the first optical fiber tube and the inner wall of the first mounting hole are sealed by a first optical fiber sealing ring. A first back plate is also installed on the rear side of the first end wall. The first optical fiber sheath is located on the rear side of the first back plate. The tail of the first optical fiber tube passes through the first back plate. A reset spring is also sleeved on the first optical fiber tube. The reset spring is located in the first mounting hole. The front end of the reset spring acts on the raised portion of the outer wall of the first optical fiber tube, and the rear end acts on the first back plate. When the first optical fiber assembly moves backward under external force, the reset spring can provide a rebound force to the first optical fiber tube.

[0014] Preferably, a socket cavity is formed between the second insulating base and the second end wall, and at least one second drainage hole is provided in the socket shell at a position located in the socket cavity, and the socket cavity is connected to the external environment through the second drainage hole. The second insulating base includes a base block and a cylindrical base wall located on the front side of the base block, and a compression spring is arranged on the outer sleeve of the base wall, and the rear end of the compression spring acts on the front end surface of the base block, and the front end of the compression spring acts on the second end wall. A sealing plate is installed at the front end of the base wall, and the sealing plate seals the front end of the base wall to form a second oil cavity in the space defined by the base wall and the sealing plate, and at least one second pressure compensation bag is provided at the rear end of the sealing plate, and the outer wall of the second pressure compensation bag is located in the second oil cavity, and a bag cavity is formed in the second pressure compensation bag, and the bag cavity is connected to the socket cavity through the hole on the sealing plate, and the second pressure compensation bag is used When the pressure in the second oil chamber changes, the pressure inside and outside the second oil chamber is balanced. The second end wall is provided with a plurality of third mounting holes along the axial direction, and the second insulating base is provided with a plurality of fourth mounting holes along the axial direction. The plurality of third mounting holes correspond to the plurality of fourth mounting holes one by one and are aligned in the axial direction. The second optical fiber assembly passes through the third mounting hole and the second oil chamber in sequence from front to back, and the head of the second optical fiber assembly is located in the second oil chamber. The second optical fiber assembly includes a second optical fiber, a second optical fiber tube coated on the outer wall of the second optical fiber, a second optical fiber sheath coated on the tail of the second optical fiber tube, and a second ceramic ferrule connected to the second optical fiber docking end. The outer wall of the second optical fiber tube and the hole wall of the third mounting hole are sealed by a second optical fiber sealing ring. When the plug assembly and the socket assembly are docked, the second ceramic ferrule of the second optical fiber assembly is inserted into the ceramic sleeve and docked with the first ceramic ferrule of the first optical fiber assembly.

[0015] Preferably, the second insulating base is also equipped with a circle of elastic snap ring, the root of the elastic snap ring is fixed on the outer wall of the second insulating base, the end of the elastic snap ring extends in the direction of the plug assembly, the outer wall of the front end of the plug shell is provided with a circle of grooves along the circumferential direction, when the plug assembly and the socket assembly are docked, the plug shell is inserted into the elastic snap ring, and the elastic snap ring is clamped into the groove, the inner wall of the socket shell is provided with a circle of grooves along the circumferential direction, when the groove is located at a position corresponding to the end of the elastic snap ring, the groove provides a space for the elastic snap ring to be able to bounce outward, so that the plug shell can be inserted into the elastic snap ring; when the second insulating base moves to the position where the elastic snap ring leaves the groove, the elastic snap ring is held tightly by the inner wall of the socket shell and cannot be bounced outward, the side wall of the second insulating base is also equipped with a limit screw, and the socket shell is provided with a retreat space, when the socket assembly is in a non-plugged state, the limit screw is limited at the rearmost end of the retreat space, and when the connector is plugged in, the limit screw can move forward in the retreat space.

[0016] By means of the above technical solution, the beneficial effects of the present invention are as follows: The underwater connector of the present invention adds a mounting positioning plate, which not only fixes the rear end of the push rod to the second end wall, but also fixes the side wall of the push rod to it, thereby adding constraints to the push rod from the side, preventing the push rod from rotating around its own axis, and also reducing the shaking of the push rod, making the structure of the push rod more stable. In addition, the three push rods distributed in a herringbone shape, combined with the T-shaped mounting positioning plate, allow the three push rods to be more reasonably arranged in a relatively small range, effectively reducing the size of the entire connector and making the connector more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic cross-sectional structure diagram of the plug assembly of the present application.

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the connector of the present application when not plugged in.

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the connector of the present application when it is fully plugged in.

[0020] Figure 4 It is a schematic diagram of the structure of the plug assembly of the present application.

[0021] Figure 5 It is a schematic diagram of the structure of the socket assembly of the present application.

[0022] Figure 6 yes Figure 2 A partial enlarged view of part A.

[0023] Figure 7 yes Figure 3 A partial enlarged view of part B.

[0024] Figure 8 yes Figure 3 A partial enlarged view of part C.

[0025] Fig. 9 It is a schematic cross-sectional structure diagram of the socket housing and the push rod assembly of the present application after installation.

[0026] Fig.10 It is a structural schematic diagram of the push rod assembly of the present application.

[0027] Fig.11 It is a structural schematic diagram of the installation positioning plate of the present application.

[0028] Fig.12 Schematic diagram of the push rod drive roller seal of the present application.

[0029] Fig.13 Schematic diagram of the push rod drive roller seal of the present application.

[0030] Wherein: 1. plug housing; 11. first end wall; 12. first insulating base; 13. plug cavity; 14. first drainage hole; 15. first pressure compensation bag; 16. first oil cavity; 17. first spring; 18. first mounting hole; 19. first back plate; 110. card slot; 111. first support plate; 112. second support plate; 121. screw limit slot; 122. first channel; 123. second channel; 124. third channel; 125. second mounting hole; 21. first optical fiber sheath; 22. first optical fiber tube; 23. first optical fiber channel; 24. return spring; 25. first optical fiber sealing ring; 26. ceramic sleeve; 27. first ceramic ferrule; 31, first roller seal; 311, first through hole; 32, second roller seal; 321, second through hole; 41, third roller seal; 411, third through hole; 42, fourth roller seal; 421, fourth through hole; 5. socket housing; 51. second end wall; 52. second drainage hole; 53. retreat space; 54. socket cavity; 55. second back plate; 511. third mounting hole; 56. groove; 6. Second insulating base; 61. Guide screw; 62. Fourth mounting hole; 63. Base wall; 64. Second pressure compensation bag; 65. Bag cavity; 66. Second oil cavity; 67. Sealing plate; 68. Limit screw; 69. Elastic snap ring; 7. Compression spring; 81. second optical fiber sheath; 82. second optical fiber tube; 83. second optical fiber channel; 84. second optical fiber sealing ring; 85. second ceramic ferrule; 91, first push rod; 92, second push rod; 93, third push rod; 94, mounting positioning plate; 911, first screw; 912, fourth screw; 913, first rod portion; 9131, first notch; 914, second rod portion; 921, second screw; 923, third notch; 931, third screw; 932, sixth screw; 933, fourth notch; 941, first screw hole; 942, second screw hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0033] The connector of the present application includes a plug assembly and a socket assembly that can be plugged into each other. The front mentioned in the present application refers to the direction in which the plug assembly moves relative to the socket assembly during plugging, and the reverse direction is the rear. Figure 2 and 3 As shown, the receptacle assembly is located in front of the plug assembly.

[0034] like Figure 1 As shown, the plug assembly of the present application includes a plug housing 1, the plug housing 1 is a cylindrical structure, the plug housing 1 includes a first end wall 11, a first insulating base 12 is installed in the plug housing 1, the first insulating base 12 is located on the front side of the first end wall 11, and the second insulating base 6 closes the front end opening of the plug housing 1.

[0035] A plug cavity 13 is formed between the first insulating base 12 and the first end wall 11 . The plug housing 1 is provided with at least one first drainage hole 14 at a position located in the plug cavity 13 . The plug cavity 13 is connected to the external environment through the first drainage hole 14 .

[0036] The plug cavity 13 is provided with a first support plate 111 and a second support plate 112, a first spring 17 is installed between the first support plate 111 and the second support plate 112, and a first pressure compensation capsule 15 is also provided in the plug cavity 13, and the first pressure compensation capsule 15 is arranged around the plug cavity 13. The two ends of the first spring 17 respectively squeeze the first support plate 111 and the second support plate 112, and the first support plate 111 and the second support plate 112 respectively press the first pressure compensation capsule 15 against the front and rear end surfaces of the plug cavity 13. A closed first oil chamber 16 is formed inside the first pressure compensation capsule 15.

[0037] The first end wall 11 is provided with a plurality of first mounting holes 18 along the axial direction, and the first insulating base 12 is provided with a plurality of second mounting holes 125 along the axial direction. The plurality of second mounting holes 125 correspond to the plurality of first mounting holes 18 one by one and are aligned in the axial direction.

[0038] The plug assembly further comprises a plurality of first optical fiber assemblies, wherein the first optical fiber assemblies sequentially pass through the first mounting hole 18 and the first oil cavity 16 from the back to the front, and the front end of the first optical fiber assembly is located in the second mounting hole 125 .

[0039] The first optical fiber assembly includes a first optical fiber (not shown in the figure), a first optical fiber tube 22 coated on the outer wall of the first optical fiber, a first optical fiber sheath 21 coated on the tail of the first optical fiber tube 22, and a first ceramic ferrule 27 connected to the head of the first optical fiber. The tail end of the first ceramic ferrule 27 is coated in the first optical fiber tube 22, and the front outer wall of the first ceramic ferrule 27 is coated with a ceramic sleeve 26. The side wall of the first optical fiber tube 22 and the inner wall of the first mounting hole 18 are sealed by a first optical fiber sealing ring 25.

[0040] A first back plate 19 is also installed on the rear side of the first end wall 11, the first optical fiber sheath 21 is located on the rear side of the first back plate 19, the tail of the first optical fiber tube 22 passes through the first back plate 19, and a return spring 24 is also sleeved on the first optical fiber tube 22. The return spring 24 is located in the first mounting hole 18, the front end of the return spring 24 acts on the raised portion of the outer wall of the first optical fiber tube 22, and the rear end acts on the first back plate 19. When the first optical fiber assembly is subjected to a backward force, it has a certain retreat space, and the return spring 24 can provide a rebound force to the first optical fiber tube 22 after being compressed.

[0041] The front end surface of the first insulating base 12 has at least one first mounting groove 56 , in which a cylindrical roller seal is installed, and the front end portion of the second mounting hole 125 is located in the first mounting groove 56 .

[0042] The roller seal comprises a roller and a sealing sleeve wrapped around the roller, and the sealing sleeve can be made of rubber material. The direction of the roller is perpendicular to the axial direction of the plug assembly. The roller seal has a plurality of through holes along its radial direction, and the plurality of through holes are arranged parallel to each other. The roller is provided with a torsion spring. The roller is also provided with a convex piece.

[0043] The roller seal mounted in the first mounting groove 56 has a sealing position and an open position.

[0044] When the roller seal is in the sealing position, the surface of the sealing sleeve seals the front end of the second mounting hole 125. When the roller seal is rotated by an angle, the roller seal is in the open position, at which time, the through hole and the axial direction of the plug assembly are parallel to each other, and the through hole is aligned and connected with the second mounting hole 125.

[0045] In a preferred embodiment, when the roller seal is in the sealing position, the through hole and the axial direction of the plug assembly are perpendicular to each other. When the roller seal is rotated 90° along its own axial direction, the roller seal is in the open position, at which time, the through hole and the axial direction of the plug assembly are parallel to each other.

[0046] The torsion spring is used to apply a restoring force to the roller seal so that the roller seal can return to the sealing position when the roller seal is subjected to an external force and leaves the sealing position.

[0047] like Figure 2 The figure shows a schematic diagram of the structure when the plug assembly and the socket assembly are not fully docked.

[0048] The socket assembly includes a socket housing 5, which is a cylindrical structure and has a second end wall 51. A second insulating base 6 is installed in the socket housing 5, and the second insulating base 6 is located at the rear side of the second end wall 51. A socket cavity 54 is formed between the second insulating base 6 and the second end wall 51. At least one second drainage hole 52 is opened in the socket housing 5 at a position located in the socket cavity 54, and the socket cavity 54 is connected to the external environment through the second drainage hole 52.

[0049] The second insulating base 6 includes a base block and a cylindrical base wall 63 located on the front side of the base block. The base wall 63 is covered with a compression spring 7. The rear end of the compression spring 7 acts on the front end surface of the base block, and the front end of the compression spring 7 acts on the second end wall 51.

[0050] The second insulating base 6 can overcome the elastic force of the compression spring 7 and move forward in the socket housing 5 under the action of external force.

[0051] A sealing plate 67 is installed at the front end of the base wall 63 . The sealing plate 67 seals the front end of the base wall 63 , and a second oil chamber 66 is formed in the space defined by the base wall 63 and the sealing plate 67 .

[0052] At least one second pressure compensation bag 64 is disposed at the rear end of the sealing plate 67, and the outer wall of the second pressure compensation bag 64 is located in the second oil chamber 66. A bag cavity 65 is formed in the second pressure compensation bag 64, and the bag cavity 65 is connected to the socket cavity 54 through the hole on the sealing plate 67. When the pressure in the second oil chamber 66 changes, the second pressure compensation bag 64 can balance the pressure inside and outside the second oil chamber 66.

[0053] The second end wall 51 is provided with a plurality of third mounting holes 511 along the axial direction, and the second insulating base 6 is provided with a plurality of fourth mounting holes 62 along the axial direction. The plurality of third mounting holes 511 correspond to the plurality of fourth mounting holes 62 one by one and are aligned in the axial direction.

[0054] The socket assembly also includes multiple second optical fiber assemblies, which pass through the third mounting hole 511 and the second oil chamber 66 from front to back in sequence, and the head of the second optical fiber assembly is located in the second oil chamber 66. In another embodiment, the head of the second optical fiber assembly can also be located in the fourth mounting hole 62.

[0055] The second optical fiber assembly includes a second optical fiber (not shown in the figure), a second optical fiber tube 82 coated on the outer wall of the second optical fiber, a second optical fiber sheath 81 coated on the tail of the second optical fiber tube 82, and a second ceramic ferrule 85 connected to the second optical fiber butt end. The outer wall of the second optical fiber tube 82 and the hole wall of the third mounting hole 511 are sealed by a second optical fiber sealing ring 84.

[0056] The rear end surface of the second insulating base 6 has at least one second mounting groove 56 , in which a cylindrical roller seal is installed, and the rear end portion of the fourth mounting hole 62 is located in the second mounting groove 56 .

[0057] The roller seal installed in the second mounting groove 56 also has a sealing position and an open position. When the roller seal is in the sealing position, the surface of the sealing sleeve seals the rear end of the fourth mounting hole 62. When the roller seal rotates an angle, the roller seal is in the open position, at which time, the through hole and the axial direction of the socket assembly are parallel to each other, and the through hole is aligned and connected with the fourth mounting hole 62.

[0058] In a preferred embodiment, when the roller seal is in the sealing position, the through hole and the axial direction of the socket assembly are perpendicular to each other. When the roller seal is rotated 90° along its own axial direction, the roller seal is in the open position, at which time, the through hole and the axial direction of the socket assembly are parallel to each other.

[0059] like Figure 1-2 As shown in FIG. 4 , two roller seals are installed on the first insulating base 12 , namely a first roller seal 31 and a second roller seal 32 .

[0060] The first insulating base 12 is further provided with a first channel 122 , a second channel 123 and a third channel 124 along the axial direction, and the protrusions of the first roller seal 31 and the second roller seal 32 extend into the first channel 122 .

[0061] like Figure 2 As shown in FIG. 5 , two roller seals are also installed on the second insulating base 6 , namely a third roller seal 41 and a fourth roller seal 42 .

[0062] When the plug assembly and the socket assembly are docked, the first roller seal 31 is docked with the fourth roller seal 42 , and the second roller seal 32 is docked with the third roller seal 41 .

[0063] When the above four roller seals are in the open position, the first through holes 311 of the first roller seal 31 are axially aligned with the fourth through holes 421 of the fourth roller seal 42. The second through holes 321 of the second roller seal 32 are axially aligned with the third through holes 411 of the third roller seal 41.

[0064] The second insulating base 6 is further provided with a fourth channel, a fifth channel and a sixth channel along the axial direction, the protruding piece of the third roller seal 41 extends into the fifth channel, and the protruding piece of the fourth roller seal 42 extends into the sixth channel. When the plug assembly and the socket assembly are docked, the first channel 122 is axially aligned with the fourth channel, the second channel 123 is axially aligned with the fifth channel, and the third channel 124 is axially aligned with the sixth channel.

[0065] like Fig. 9 and 10 As shown, the socket assembly further includes a push rod assembly, which includes a first push rod 91, a second push rod 92, and a third push rod 93 arranged in the axial direction. The head of the first push rod 91 passes through the fourth channel, the head of the second push rod 92 passes through the fifth channel, and the head of the third push rod 93 passes through the sixth channel.

[0066] The tails of the first push rod 91 , the second push rod 92 and the third push rod 93 are fixed to the second end wall 51 by means of a first screw 911 , a second screw 921 and a third screw 931 , respectively.

[0067] The push rod assembly also includes a mounting positioning plate 94, and the side walls of the tails of the first push rod 91, the second push rod 92 and the third push rod 93 are fixedly connected to the side of the mounting positioning plate 94 by a fourth screw 912, a fifth screw (not shown in the figure) and a sixth screw 932 respectively.

[0068] Specifically, Fig.10 and 11 As shown, the first push rod 91, the second push rod 92 and the third push rod 93 are arranged in a T-shape, and the mounting positioning plate 94 is T-shaped, having a transverse rod portion and a longitudinal rod portion perpendicular to the transverse rod portion, and the side edges on the left and right sides of the transverse rod portion are fixedly connected to the rear side walls of the second push rod 92 and the third push rod 93 respectively, and the end side edges of the longitudinal rod portion are fixedly connected to the rear side wall of the first push rod 91.

[0069] When the first push rod 91 , the second push rod 92 and the third push rod 93 are installed on the second end wall 51 , the installation positioning plate 94 is in contact with the second end wall 51 .

[0070] Assuming that the push rod is only fixed to the second end wall 51 by screws, the push rod has only one fixing point. At this time, if the screws are loose, the push rod is easy to rotate around its own axis, which will make the push rod unable to work normally. By adding the positioning plate 94 and fixing the side wall of the push rod to it, the push rod is restrained from the side to prevent the push rod from rotating around its own axis, and the shaking of the push rod is also reduced, making the structure of the push rod more stable.

[0071] In addition, the three push rods are arranged in a herringbone shape, and the T-shaped mounting positioning plate 94 is used, so that the three push rods can be more reasonably arranged in a relatively small range, effectively reducing the size of the entire connector and making the connector more compact.

[0072] like Figure 4 and 5 As shown, the front end surface of the first insulating base 12 is provided with two screw limiting grooves 121, and the rear end surface of the second insulating base 6 is provided with two guide screws 61 that match the screw limiting grooves 121. When the plug assembly and the socket assembly are plugged into each other, the guide screws 61 are inserted into the corresponding screw limiting grooves 121, and this structure can play a guiding role and also prevent the plug assembly and the socket assembly from rotating relative to each other.

[0073] When the guide screw 61 is inserted to the bottom of the screw limit groove 121, the maximum compression is achieved between the roller seals of the plug assembly and the socket assembly. By pre-designing the depth of the screw limit groove 121 and the length of the guide screw 61, the compression of the roller seal will be controlled within a suitable range during the actual plug-in operation, avoiding excessive compression of the roller seal due to excessive plug-in force. If the roller seal is over-compressed, the material will be deformed excessively and lose elasticity, which will affect the sealing effect and cause leakage and other problems. The control of the compression by the guide screw 61 can effectively avoid such situations.

[0074] The second insulating base 6 is also provided with a circle of elastic snap ring 69, the root of which is fixed on the outer wall of the second insulating base 6, the free end of which extends toward the plug assembly, and the outer wall of the front end of the plug housing 1 is provided with a circle of grooves 110 along the circumferential direction. When the plug assembly and the socket assembly are docked, the plug housing 1 is inserted into the elastic snap ring 69, and the elastic snap ring 69 is snapped into the groove 110.

[0075] like Figure 2 and 3 As shown, the inner wall of the socket housing 5 is provided with a circle of grooves 56 along the circumferential direction. When the socket assembly is in a non-plugged state, the groove 56 is located at a position corresponding to the free end of the elastic snap ring 69. When the plug housing 1 is inserted into the elastic snap ring 69, the groove 56 provides a space for the elastic snap ring 69 to be able to spring outward, so that the plug housing 1 can be smoothly inserted into the elastic snap ring 69. When the second insulating base 6 moves forward until the elastic snap ring 69 leaves the position where the groove 56 is located, the elastic snap ring 69 is held tightly by the inner wall of the socket housing and cannot be spring outward, and the free end of the elastic snap ring 69 cannot be separated from the card slot 110, thereby making the plug housing 1 unable to be separated from the elastic snap ring 69. At the same time, the relative position of the plug assembly and the socket assembly in the axial direction is limited, the minimum compression amount between the roller seals is determined, and the sealing effect between the roller seals is ensured.

[0076] The side wall of the second insulating base 6 is also installed with a stop screw 68. Correspondingly, the socket housing 5 is provided with a retreat space 53. The retreat space 53 can be a strip groove opened on the socket housing 5, and the stop screw 68 passes through the strip groove. When the socket assembly is in a non-plugged state, the stop screw 68 is limited at the rearmost end of the strip groove, which can prevent the second insulating base 6 from moving further backward and detaching from the socket housing 5. When the connector is plugged in, the second insulating base 6 moves forward, and the strip groove provides a retreat space 53 for the stop screw 68.

[0077] The working process of the connector of this application is as follows: When the plug assembly and the socket assembly are plugged into each other, The front end of the plug housing 1 is inserted into the elastic snap ring 69, and the elastic snap ring 69 pops open and snaps into the slot 110 of the plug housing 1. During this process, the groove 56 on the inner wall of the socket housing 5 provides space for the free end of the elastic snap ring 69 to pop open outward.

[0078] When the plug assembly moves toward the socket assembly, the roller seal of the plug assembly and the roller seal of the socket assembly squeeze each other, specifically, the first roller seal 31 of the plug assembly and the fourth roller seal 42 of the socket assembly are arranged opposite to each other and squeeze each other; the second roller seal 32 of the plug assembly and the third roller seal 41 of the socket assembly are arranged opposite to each other and squeeze each other. At the same time, the guide screw 61 is inserted into the bottom of the screw limiting groove 121, and the second insulating base 6 moves forward under the squeezing of the plug assembly to overcome the elastic force of the compression spring 7.

[0079] During the forward movement of the second insulating base 6, the first push rod 91 extends from the fourth channel and enters the first channel 122. The second push rod 92 extends from the fifth channel and enters the second channel 123. The third push rod 93 extends from the sixth channel and enters the third channel 124.

[0080] The first push rod 91 is provided with a first recess 9131 and a second recess (not shown in the figure) at the head thereof. When the first push rod 91 moves in the first channel 122, the protrusions of the first roller seal 31 and the second roller seal 32 are respectively inserted into the first recess 9131 and the second recess. When the first push rod 91 further extends into the first channel 122, the protrusions of the first roller seal 31 and the second roller seal 32 are respectively moved by the first recess 9131 and the second recess. At this time, the first roller seal 31 and the second roller seal 32 rotate from the original sealing position to the opening position.

[0081] The head of the second push rod 92 is provided with a third recess 923. When the second push rod 92 moves in the fifth channel, the protrusion of the third roller seal 41 is inserted into the third recess 923. When the second push rod 92 moves further, the protrusion of the third roller seal 41 is moved by the third recess 923. At this time, the third roller seal 41 rotates from the original sealing position to the open position.

[0082] The head of the third push rod 93 is provided with a fourth recess 933. When the third push rod 93 moves in the sixth channel, the protrusion of the fourth roller seal 42 is inserted into the fourth recess 933. When the third push rod 93 moves further, the protrusion of the fourth roller seal 42 is moved by the fourth recess 933. At this time, the fourth roller seal 42 rotates from the original sealing position to the open position.

[0083] like Figure 3 As shown, the first roller seal 31 and the fourth roller seal 42 are both in the open position, and the first through hole 311 of the first roller seal 31, the fourth through hole 421 of the fourth roller seal 42, the second mounting hole 125 corresponding to the first through hole 311, and the fourth mounting hole 62 corresponding to the fourth through hole 421 are aligned with each other and communicated with each other to form an optical fiber docking channel extending in the axial direction. The second roller seal 32 and the third roller seal 41 are also in the open position, and the second channel 123 of the second roller seal 32, the third through hole 411 of the third roller seal 41, the second mounting hole 125 corresponding to the second through hole 321, and the fourth mounting hole 62 corresponding to the third through hole 411 correspond to each other and communicate with each other to form an optical fiber docking channel extending in the axial direction.

[0084] The end of the second optical fiber assembly passes through the fourth mounting hole 62 and the through hole of the roller seal in sequence, extends into the second mounting hole 125 , and docks with the first optical fiber assembly located in the second mounting hole 125 .

[0085] like Figure 8 As described above, the second ceramic ferrule 85 of the second optical fiber assembly is inserted into the ceramic sleeve 26 and docked with the first ceramic ferrule 27 of the first optical fiber assembly.

[0086] When the plug assembly and the socket assembly are separated, the plug assembly is pulled out of the socket housing 5 , and the second insulating base 6 moves backwards under the drive of the plug assembly and the elastic force of the compression spring 7 .

[0087] As the second insulating base 6 moves backward, the second optical fiber assembly is separated from the through hole of the roller seal and retracts into the second oil chamber 66. The first push rod 91, the second push rod 92 and the third push rod 93 are separated from the first channel 122, the second channel 123 and the third channel 124 respectively and retract into the fourth channel, the fifth channel and the sixth channel.

[0088] During the process of the first push rod 91 withdrawing from the first channel 122, the protrusions of the first roller seal 31 and the second roller seal 32 are respectively inserted into the first recess 9131 and the second recess. As the first insulating base 12 retreats further, the first recess 9131 and the second recess respectively move the protrusions of the first roller seal 31 and the second roller seal 32, causing the first roller seal 31 and the second roller seal 32 to rotate from the open position to the sealed position, thereby re-sealing the end of the second mounting hole 125.

[0089] When the second push rod 92 moves in the fifth channel, the protrusion of the third roller seal 41 is again inserted into the third recess 923. As the second push rod 92 moves further, the protrusion of the third roller seal 41 is pushed by the third recess 923. At this time, the third roller seal 41 rotates from the open position to the sealed position, and re-seals the end of the corresponding fourth mounting hole 62.

[0090] When the third push rod 93 moves in the sixth channel, the protrusion of the fourth roller seal 42 is again inserted into the fourth recess 933. As the third push rod 93 moves further, the protrusion of the fourth roller seal 42 is pushed by the fourth recess 933. At this time, the fourth roller seal 42 rotates from the open position to the sealed position, and re-seals the end of the corresponding fourth mounting hole 62.

[0091] When the second insulating base 6 returns to its original position, the free end of the elastic snap ring 69 is located at the position of the groove 56. When the plug assembly is pulled out, the elastic snap ring 69 pops outward and disengages from the slot 110 of the plug housing 1, thereby separating the plug assembly from the socket assembly.

[0092] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. An underwater connector, characterized in that: It includes a plug assembly and a socket assembly that can be plugged into each other. The plug assembly comprises a cylindrical plug housing (1), a first insulating base (12) arranged in the plug housing (1), and a front end surface of the first insulating base (12) having at least one first mounting groove (56). The socket assembly comprises a cylindrical socket housing (5), a second insulating base (6) arranged in the socket housing (5), the second insulating base (6) being able to move forward along the socket housing (5) under the action of an external force, the socket housing (5) having a second end wall (51), the second insulating base (6) being located at the rear side of the second end wall (51), the rear end surface of the second insulating base (6) having at least one second mounting groove (56), The first installation groove (56) and the second installation groove (56) are both installed with cylindrical roller seals, and the roller seal in the first installation groove (56) is arranged corresponding to the roller seal in the second installation groove (56). The roller seal comprises a roller and a sealing sleeve wrapped around the roller. The direction of the roller is perpendicular to the axial direction of the connector. The roller is provided with a convex piece. The convex piece is used to drive the roller seal to rotate around the roller when being moved by an external force. The first insulating base (12) and the second insulating base (6) are provided with aligned channels along the axial direction, and the protruding piece of the roller seal extends into the channels. The socket assembly further comprises a push rod assembly, wherein the push rod assembly comprises at least one push rod. The rear end of the push rod is fixed on the second end wall (51), the push rod assembly further comprises a mounting positioning plate (94), the side wall of the push rod is fixed on the mounting positioning plate (94), and the end of the push rod passes through the channel of the second insulating base (6). When the plug assembly and the socket assembly are docked, the second insulating base (6) moves forward under the pressure of the first insulating base (12), and the end of the push rod extends into the channel of the first insulating base (12). The push rod can move the protruding piece in the process of moving in the channel, so that the roller seal rotates.

2. The connector according to claim 1, characterized in that: The push rod assembly comprises three push rods, namely a first push rod (91), a second push rod (92) and a third push rod (93). The tails of the first push rod (91), the second push rod (92) and the third push rod (93) are fixed to the second end wall (51) by means of a first screw (911), a second screw (921) and a third screw (931), respectively, and the side walls of the tails of the first push rod (91), the second push rod (92) and the third push rod (93) are fixedly connected to the side edges of the mounting positioning plate (94) by means of a fourth screw (912), a fifth screw and a sixth screw (932), respectively.

3. The connector according to claim 2, characterized in that: The first push rod (91), the second push rod (92) and the third push rod (93) are arranged in a T-shape, and the mounting positioning plate (94) is T-shaped. The mounting positioning plate (94) has a transverse rod portion and a longitudinal rod portion perpendicular to the transverse rod portion. The side edges on the left and right sides of the transverse rod portion are respectively fixedly connected to the rear side walls of the second push rod (92) and the third push rod (93), and the end side edges of the longitudinal rod portion are fixedly connected to the rear side wall of the first push rod (91). The mounting positioning plate (94) is in contact with the second end wall (51).

4. The connector according to claim 3, characterized in that: Two roller seals are mounted on the first insulating base (12), namely a first roller seal (31) and a second roller seal (32). The first insulating base (12) is provided with three channels along the axial direction, namely a first channel (122), a second channel (123) and a third channel (124). The protrusions of the first roller seal (31) and the second roller seal (32) extend into the first channel (122). Two roller seals are also installed on the second insulating base (6), namely the third roller seal (41) and the fourth roller seal (42). When the plug assembly and the socket assembly are docked, the first roller seal (31) docks with the fourth roller seal (42), and the second roller seal (32) docks with the third roller seal (41). The second insulating base (6) is also provided with three channels along the axial direction, namely the fourth channel, the fifth channel and the sixth channel. The protruding piece of the third roller seal (41) extends into the fifth channel, and the protruding piece of the fourth roller seal (42) extends into the sixth channel. The first channel (122) is axially aligned with the fourth channel, the second channel (123) is axially aligned with the fifth channel, and the third channel (124) is axially aligned with the sixth channel. The head of the first push rod (91) passes through the fourth channel, the head of the second push rod (92) passes through the fifth channel, and the head of the third push rod (93) passes through the sixth channel. When the plug assembly and the socket assembly are docked, the first push rod (91) extends from the fourth channel and enters the first channel (122), the second push rod (92) extends from the fifth channel and enters the second channel (123), and the third push rod (93) extends from the sixth channel and enters the third channel (124).

5. The connector according to claim 1, characterized in that: The plug housing (1) is provided with a plurality of first optical fiber assemblies, the first insulating base (12) is provided with a plurality of second mounting holes (125) along the axial direction, the first optical fiber assemblies can pass through the second mounting holes (125), the front ends of the second mounting holes (125) are located in the first mounting grooves (56), The socket housing (5) is provided with a plurality of second optical fiber assemblies, the second insulating base (6) is provided with a plurality of fourth mounting holes (62) along the axial direction, the second optical fiber assemblies can pass through the fourth mounting holes (62), the rear end portions of the fourth mounting holes (62) are located in the second mounting grooves (56), The roller seal has a plurality of through holes parallel to each other along its radial direction. The roller seal installed in the first installation groove (56) has a sealing position and an open position. When the roller seal is in the sealing position, the surface of the sealing sleeve seals the front end of the second installation hole (125). When the roller seal is rotated to the open position, the through hole of the roller seal is parallel to the axial direction of the plug assembly, and the through hole of the roller seal is connected and aligned with the second installation hole (125) one by one. The roller seal installed in the second mounting groove (56) also has a sealing position and an open position. When the roller seal is in the sealing position, the surface of the sealing sleeve seals the rear end of the fourth mounting hole (62). When the roller seal is rotated to the open position, the through hole of the roller seal is parallel to the axial direction of the socket assembly, and the through hole of the roller seal is connected and aligned with the fourth mounting hole (62) one by one.

6. The connector according to claim 5, characterized in that: The first push rod (91) is provided with a first notch (9131) and a second notch, the second push rod (92) is provided with a third notch (923), and the head of the third push rod (93) is provided with a fourth notch (933). During the process of plugging the plug assembly into the socket assembly, the first recess (9131) and the second recess are respectively used to move the protruding pieces of the first roller seal (31) and the second roller seal (32), so that the first roller seal (31) and the second roller seal (32) are rotated from the sealing position to the opening position; the third recess (923) is used to move the protruding piece of the third roller seal (41), so that the third roller seal (41) is rotated from the sealing position to the opening position; the fourth recess (933) is used to move the protruding piece of the fourth roller seal (42), so that the fourth roller seal (42) is rotated from the sealing position to the opening position; During the process of pulling the plug assembly out of the socket assembly, the first recess (9131) and the second recess are respectively used to move the protruding pieces of the first roller seal (31) and the second roller seal (32), so that the first roller seal (31) and the second roller seal (32) are rotated from the open position to the sealed position; the third recess (923) is used to move the protruding piece of the third roller seal (41), so that the third roller seal (41) is rotated from the open position to the sealed position; the fourth recess (933) is used to move the protruding piece of the fourth roller seal (42), so that the fourth roller seal (42) is rotated from the open position to the sealed position. When the plug assembly and the socket assembly are docked, the roller seal in the first mounting groove (56) is connected and aligned with the through hole of the roller seal in the corresponding second mounting groove (56), and the corresponding second mounting hole (125), the through hole of the roller seal and the fourth mounting hole (62) are aligned and connected with each other to form an optical fiber docking channel extending in the axial direction, and the end of the second optical fiber assembly can pass through the optical fiber docking channel to dock with the first optical fiber assembly.

7. The connector according to claim 5, characterized in that: The roller is also equipped with a torsion spring, which is used to apply a restoring force to the roller seal so that the roller seal can return to the sealing position when the roller seal leaves the sealing position due to external force.

8. The connector according to claim 7, characterized in that: The plug housing (1) comprises a first end wall (11), a first insulating base (12) is located on the front side of the first end wall (11), a plug cavity (13) is formed between the first insulating base (12) and the first end wall (11), at least one first drainage hole (14) is provided in the plug housing (1) at a position located in the plug cavity (13), and the plug cavity (13) is communicated with the external environment through the first drainage hole (14). A first support plate (111) and a second support plate (112) are provided in the plug cavity (13); a first spring (17) is installed between the first support plate (111) and the second support plate (112); a first pressure compensation bag (15) is also provided in the plug cavity (13); the first pressure compensation bag (15) is arranged around the plug cavity (13); two ends of the first spring (17) respectively squeeze the first support plate (111) and the second support plate (112); the first support plate (111) and the second support plate (112) respectively press the first pressure compensation bag (15) against the front and rear end surfaces of the plug cavity (13); a closed first oil chamber (16) is formed inside the first pressure compensation bag (15); The first end wall (11) is provided with a plurality of first mounting holes (18) along the axial direction, the plurality of second mounting holes (125) correspond to the plurality of first mounting holes (18) one by one and are aligned in the axial direction, the first optical fiber assembly passes through the first mounting holes (18) and the first oil chamber (16) in sequence from back to front, and the front end of the first optical fiber assembly is located in the second mounting hole (125). The first optical fiber assembly comprises a first optical fiber, a first optical fiber tube (22) coated on the outer wall of the first optical fiber, a first optical fiber sheath (21) coated on the tail of the first optical fiber tube (22), and a first ceramic ferrule (27) connected to the head of the first optical fiber, the tail end of the first ceramic ferrule (27) is coated in the first optical fiber tube (22), the front end outer wall of the first ceramic ferrule (27) is coated with a ceramic sleeve (26), the side wall of the first optical fiber tube (22) and the inner wall of the first mounting hole (18) are sealed by a first optical fiber sealing ring (25), A first back plate (19) is also installed on the rear side of the first end wall (11), the first optical fiber sheath (21) is located on the rear side of the first back plate (19), the tail of the first optical fiber tube (22) passes through the first back plate (19), and a return spring (24) is also sleeved on the first optical fiber tube (22). The return spring (24) is located in the first mounting hole (18), the front end of the return spring (24) acts on the raised portion of the outer wall of the first optical fiber tube (22), and the rear end acts on the first back plate (19). When the first optical fiber assembly is moved backward by external force, the return spring (24) can provide a rebound force to the first optical fiber tube (22).

9. The connector according to claim 8, characterized in that: A socket cavity (54) is formed between the second insulating base (6) and the second end wall (51); at least one second drainage hole (52) is provided in the socket housing (5) at a position located in the socket cavity (54); the socket cavity (54) is in communication with the external environment through the second drainage hole (52); The second insulating base (6) comprises a base block and a cylindrical base wall (63) located at the front side of the base block. A compression spring (7) is provided on the outer sleeve of the base wall (63). The rear end of the compression spring (7) acts on the front end surface of the base block, and the front end of the compression spring (7) acts on the second end wall (51). A sealing plate (67) is installed at the front end of the base wall (63). The sealing plate (67) seals the front end of the base wall (63) to form a second oil chamber (66) in the space defined by the base wall (63) and the sealing plate (67). At least one second pressure compensation bag (64) is arranged at the rear end of the sealing plate (67); the outer wall of the second pressure compensation bag (64) is located in the second oil chamber (66); a bag cavity (65) is formed in the second pressure compensation bag (64); the bag cavity (65) is connected to the socket cavity (54) through a hole on the sealing plate (67); the second pressure compensation bag (64) is used to balance the pressure inside and outside the second oil chamber (66) when the pressure in the second oil chamber (66) changes. The second end wall (51) is provided with a plurality of third mounting holes (511) along the axial direction, and the second insulating base (6) is provided with a plurality of fourth mounting holes (62) along the axial direction. The plurality of third mounting holes (511) correspond to the plurality of fourth mounting holes (62) one by one and are aligned in the axial direction. The second optical fiber assembly passes through the third mounting hole (511) and the second oil chamber (66) in sequence from front to back, and the head of the second optical fiber assembly is located in the second oil chamber (66). The second optical fiber assembly comprises a second optical fiber, a second optical fiber tube (82) coated on the outer wall of the second optical fiber, a second optical fiber sheath (81) coated on the tail of the second optical fiber tube (82), and a second ceramic ferrule (85) connected to the second optical fiber butt joint end, the outer wall of the second optical fiber tube (82) and the hole wall of the third mounting hole (511) are sealed by a second optical fiber sealing ring (84). When the plug assembly and the socket assembly are docked, the second ceramic ferrule (85) of the second optical fiber assembly is inserted into the ceramic sleeve (26) and docked with the first ceramic ferrule (27) of the first optical fiber assembly.

10. The connector according to claim 1, characterized in that The second insulating base (6) is also provided with a circle of elastic snap ring (69), the root of which is fixed on the outer wall of the second insulating base (6), the end of which extends in the direction of the plug assembly, the outer wall of the front end of the plug housing (1) is provided with a circle of grooves (110) along the circumferential direction, when the plug assembly and the socket assembly are docked, the plug housing (1) is inserted into the elastic snap ring (69), and the elastic snap ring (69) is snapped into the grooves (110), the inner wall of the socket housing (5) is provided with a circle of grooves (56) along the circumferential direction, when the grooves (56) are located at the position corresponding to the end of the elastic snap ring (69), the grooves (56) are the The elastic snap ring (69) provides a space that can be ejected outward, so that the plug housing (1) can be inserted into the elastic snap ring (69); when the second insulating base (6) moves to the position where the elastic snap ring (69) leaves the groove (56), the elastic snap ring (69) is held tightly by the inner wall of the socket shell and cannot be ejected outward. A limit screw (68) is also installed on the side wall of the second insulating base (6). A retreat space (53) is provided on the socket housing (5). When the socket assembly is in a non-plugged state, the limit screw (68) is limited at the rear end of the retreat space (53). When the connector is plugged in, the limit screw (68) can move forward in the retreat space (53).

Images