CN215910679U - Wet plug optical connector - Google Patents

Abstract

The utility model relates to a wet-plugging optical connector, which adopts the principle of pressure balance between the inside and the outside of the connector to eliminate the sealing pressure difference between the inside and the outside of the connector, a pressure balance mechanism is realized by adopting a freely deformable oil sac, and the pressure at the sealing position of the connector is eliminated through the balance of the oil sac, an oil area in the connector and a pressure water area on the other surface of the oil sac, thereby realizing the sealing. The connector plugging and unplugging process is sealed by adopting a rotary sealing element, the rotary sealing element is provided with a through hole, the through hole of the rotary sealing element in a non-plugging state is plugged and sealed, the rotary sealing element of the matched connector is tightly attached and sealed when in plugging, the rotary sealing element is rotated to the through hole to be communicated to form a through oil domain, two independent balance oil domains of the matched connector are communicated to form a balance oil domain, and a contact element of the connector is plugged and connected in the oil domain to work for a long time. In the connector separation process, the connector contact pieces are separated, and the rotary sealing assembly rotates to the position where the through hole is blocked, so that sealing separation is realized.

Description

Wet plug optical connector

Technical Field

The utility model relates to the field of optical transmission machinery, in particular to a wet-plugging optical connector.

Background

Connectors that are plugged and unplugged in an underwater environment are generally referred to as wet-mate optical connectors. Under water, especially in marine environment, sundries such as water, microorganisms, seaweed, debris and the like can easily enter the connector, so that the problems of dead locking of the connector, blockage of an optical path and the like are caused. The existing connectors in severe environments are all kept before plugging, during plugging and after plugging, optical contact elements are not influenced by external environments in the connectors.

The dustproof function is realized through increasing the baffle when current connector generally uses, and this kind of structure can only be applicable to and realizes simple and easy dustproof function in the ordinary environment, can not be applied to under water. The existing underwater wet-plugging optical connector has low reliability and large plugging force during underwater plugging and unplugging and is not suitable for operation. Therefore, there is a high necessity for a wet-pluggable optical connector which is easy to handle and has high reliability.

SUMMERY OF THE UTILITY MODEL

The utility model provides a wet-plugging optical connector which is easy to operate and high in reliability, and the specific technical scheme is as follows:

a wet-mate optical connector comprising a receptacle and a plug:

a base body 4, a base rotary sealing body 2, a reciprocating oil bag 201 and a light contact pin assembly 9 are sequentially arranged in the base shell 1 of the socket from right to left; the seat base body 4 is arranged in the seat shell 1 in a floating manner, and a large return spring 200 is arranged between the seat base body 4 and the bottom of the seat shell 1; the optical pin assembly 9 is fixedly arranged at the bottom of the seat shell 1; the base body 4 is provided with a mounting hole for mounting the base rotary sealing body 2; the seat rotary sealing body 2 is of a cylindrical structure, can be rotatably installed in an installation hole of the seat base body 4 along the radial direction of the seat base body 4, is provided with seat through holes 21 with the same number of optical pin assemblies 9, and is communicated with the inner cavity of the seat base body 4 when the seat through holes 21 rotate to the axial position of the seat base body 4, and the reciprocating oil sac 201 is arranged in the cavity of the seat base body 4;

a head base body 11, a head rotary sealing body 10, a head oil bag 14, an optical jack component 12 and a wire outlet seat 15 are sequentially arranged in a head shell 13 of the plug from left to right; first base member 11 sets up in first casing 13 left end cavity, first rotary seal 10, optical plug component 12 sets up in first base member 11, outlet seat 15 sets up at the rightmost end of first casing 13 and will first oil bag 14 compresses tightly on first casing 13, be equipped with the first through-hole 101 unanimous with optical plug component 12 quantity on the first rotary seal 10, first through-hole 101 realize when rotatory to first base member 11 axial position with the link up of first base member 11 inner chamber.

Further, a base rotary shifting piece 3 and a head rotary shifting piece 17 are respectively arranged on the base rotary sealing body 2 and the head rotary sealing body 10, and a base driving rod 6 and a head driving rod 5 which drive the base rotary sealing body 2 and the head rotary sealing body 10 to rotate when a plug is inserted into a socket are arranged in the socket.

Further, the seat driving rod 6 and the head driving rod 5 may respectively drive the seat rotation shifting piece 3 and the head rotation shifting piece 17 to rotate by 80 to 100 °.

Further, the holder rotary paddle 3 is provided with a projection a31 and a projection B32, and the head rotary paddle 17 is provided with a projection C171 and a projection D172.

Further, the seat driving rod 6 is provided with 1 notch B61 along the inner side of the track of the seat rotary paddle 3, the protrusion a31 of the seat rotary paddle 3 slides into the notch B61, and pushes the seat rotary sealing body 2 to rotate inwards;

the head driving rod 5 is of a similar sound fork structure, two forks are respectively provided with a notch A51, and in the process of inserting into a socket, the notches drive the protrusion C171 of the head rotating shifting piece 17 to realize the rotation of the head rotating sealing body 10; the position where the notch a51 on the head driving lever 5 is engaged with the protrusion C171 of the head rotary paddle 17 coincides with the position where the notch B61 on the seat driving lever is engaged with the protrusion a31 of the seat rotary paddle 3.

Furthermore, the plug is also provided with a reset tension spring 16, and one end of the reset tension spring 16 is connected with the protrusion D172 of the head rotation shifting piece 17; the socket is provided with a small reset spring 7 and a reset ejector rod 8, wherein the small reset spring 7 and the reset ejector rod 8 are connected with a protrusion B32 of the seat rotating shifting piece 3.

Further, a seal cavity formed between the seat rotary seal body 2, the reciprocating oil bladder 201, and the seat base 4 is filled with insulating oil; silicone oil is filled between the head base body 11 and the head oil bag 14, and the optical socket assembly 12 is soaked in the silicone oil;

further, the head oil bag 14 adopts a wave-shaped structure in the radial direction, and the head oil bag 14 can realize radial and axial compression deformation; the cavity of the reciprocating oil bag 201 is communicated with the outside.

Further, the outer layer of the seat rotary sealing body 2, the outer layer of the head rotary sealing body 10, the reciprocating oil bag 201 and the head oil bag 14 are made of rubber materials; the diameters of the seat rotary seal body 2 and the head rotary seal body 10 are larger than the mounting hole by 0.03-0.1 mm.

Further, the optical pin assembly 9 and the optical jack assembly 12 are respectively provided with a base ferrule 93 and a head ferrule, the optical fiber is respectively bonded in the base ferrule 93 and the head ferrule by epoxy glue, and the end faces are polished; the optical pin assembly 9 and the optical jack assembly 12 are provided with ceramic sleeves to calibrate the butted optical fibers;

the seat insert core 93 is installed in an inner hole of a seat sealing body 92, and the rear end of the seat sealing body 92 is provided with an O-shaped ring 91 for optical sealing;

the head ferrule is installed in the inner hole of the ferrule holder, wherein a ferrule spring is provided, and the optical receptacle assembly 12 is further provided with a positioning sleeve to assist the pre-compression of the ferrule spring and ensure the compression force when the ferrule is matched.

The utility model has the beneficial effects that:

1. the small reset spring, the reset tension spring and the driving rod can realize the reset of the rotary seal, the combination of the small reset spring, the reset tension spring and the driving rod realizes double guarantee, the reliable rotation and reset of the rotary seal body are realized, and good seal is guaranteed.

2. The head oil sac can realize radial and axial compression deformation, provides a good pressure compensation effect, realizes force balance, and cannot generate larger insertion and extraction force.

3. The optical pin assembly and the optical jack assembly have simple structures and are easy to process and assemble.

Drawings

FIG. 1 is a schematic three-dimensional structure of a socket;

FIG. 2 is a cross-sectional view of the socket;

FIG. 3 is a three-dimensional schematic view of a plug;

FIG. 4 is a cross-sectional view of the plug;

FIG. 5 is a schematic view of a plug receptacle mating arrangement;

FIG. 6 is a three-dimensional schematic view of the rotary seal with the housing, substrate, etc. removed and initially rotated;

FIG. 7 is a three-dimensional schematic view of FIG. 6 in another orientation;

FIG. 8 is a schematic view of the rotary seal body with the housing, base, etc. removed and in a final rotated state;

fig. 9 is a cross-sectional view of an optical pin assembly;

FIG. 10 is a cross-sectional view of an optical receptacle assembly;

FIG. 11 is a diagram of a wet-pluggable optical connector assembly.

Description of reference numerals:

1. a seat housing; 2. a seat rotary seal body; 3. a seat rotating plectrum; 4. a seat base; 5. a head drive lever; 6. A seat driving lever; 7. a small return spring; 8. resetting the ejector rod; 9. an optical pin assembly; 10. a head rotary seal body; 11. a head base body; 12. an optical receptacle assembly; 13. a head housing; 14. a head oil sac; 15. a wire outlet seat; 16. a return tension spring; 17. the head rotates the plectrum; 21. a seat through hole; 31. a protrusion A; 32. a protrusion B; 51. a notch A; 61. A notch B; 91. an O-shaped ring; 92. a seat seal body; 93. a base ferrule; 101. a head through hole; 171. a protrusion C; 172. a protrusion D; 200. a big return spring; 201. a reciprocating oil sac; 202. an inner cavity of the oil bag; 232. an optical receptacle assembly tail; 233. an optical receptacle assembly base; 234. a light jack assembly crown spring; 303. an insulating member; 304. Vulcanizing the sealing body; 305. a needle core.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific examples.

In the utility model, the front end of the socket is defined as the side where the socket is matched with the plug, and the front end of the plug is defined as the side where the socket is matched with the plug.

The best embodiment is as follows:

the embodiment is a wet-pluggable optical connector, which specifically comprises a socket and a plug. In the present embodiment, there are 8 channels, specifically, there are 2 socket rotary sealing bodies 2 in the socket, and there are 2 head rotary sealing bodies 10 in the corresponding plug. Each rotary sealing body is provided with 4 circular through holes (a seat through hole 21 and a head through hole 101) so that 8 optical pin assemblies 9 in the socket can be guaranteed to be sealed when passing through the through holes in the inserting and combining process, and are respectively matched with 8 optical pin assemblies 12 in the plug to realize optical path connection.

As shown in fig. 1, 2 and 6, the socket as a whole includes: the seat comprises a seat shell 1, a seat rotary sealing body 2, a seat rotary shifting sheet 3, a seat base 4, a head driving rod 5, a seat driving rod 6, a small reset spring 7, a reset ejector rod 8, a light contact pin assembly 9, a large reset spring 200 and a reciprocating oil sac 201. The socket shell 1 is used for accommodating all other parts in the socket; the front end of the plug is provided with a plug base body 4, and the plug base body 4 floats in the shell; the middle section part is provided with a large return spring 200, and the rear end is provided with and fixes a plug driving rod 5, a socket driving rod 6 and an optical pin assembly 9 which penetrate into the plug socket base body 4 together.

As shown in fig. 2, 5 and 6, the reciprocating oil bladder 201 is embedded in the base 4 of the socket, and 8 optical pin assemblies 9 pass through 8 through holes of the rotary sealing body 2 of the socket, and the 8 through holes are slightly smaller than the outer diameter of the optical pin assemblies 9. The seat rotary seal body 2 is installed in a circular hole at the front end of the socket base body 4, and the inner diameter of the circular hole is slightly smaller than the outer diameter of the seat rotary seal body 2. The cavity portions in the seat rotary seal 2, the reciprocating oil pocket 201 and the seat base 4 are filled with silicone oil, and other insulating oil may be selected. The outer layer of the body of the seat rotary seal 2 and the reciprocating oil pocket 201 are entirely made of rubber material having excellent elasticity, so that a pressure is generated, thereby preventing leakage of the insulating liquid and entry of water. An oil bag cavity 202 is arranged in the reciprocating oil bag 201, when the connector is plugged and pulled out and the temperature changes, the volume of insulating oil changes, and the volume of the oil bag cavity 202 also changes along with the change; since the water in the exterior is in communication with the water in the oil bladder cavity 202, pressure equalization between the exterior and the interior of the socket is ensured.

As shown in fig. 3, 4, 5, and 7, the plug includes: the head rotary sealing body 10, the head base body 11, the optical jack assembly 12, the head shell body 13, the head oil bag 14, the wire outlet base 15, the reset tension spring 16 and the head rotary shifting piece 17. Similar to the overall structure of the socket, the head base body 11 is arranged at the front end of the head shell body 13, the middle section is a head oil bag 14, the rear end is a wire outlet seat 15, and other parts are all arranged in the head base body 11. The rear end of the head oil bag 14 is tightly pressed on the head shell 13 by the wire outlet seat 15, and an internal cavity formed by the head rotary sealing body 10, the head base body 11, the head oil bag 14, the head shell 13 and the wire outlet seat 15 is filled with silicone oil. The optical receptacle assembly 12 is mounted in the head substrate 11 completely immersed in silicone oil. The outer edge of the head oil bag 14 is in a wave-shaped design, so that radial and axial compression deformation can be realized, and the pressure balance between the outside and the inside of the connector is ensured.

Fig. 5 is a schematic diagram of the butt joint of the plug and the socket, and fig. 6 and 7 are schematic diagrams of the butt joint of the socket and the plug, which is realized by removing the base body, the shell and other parts and showing the realization of the rotary sealing of the socket and the plug as far as possible. In order to realize reliable rotary sealing and resetting of the seat rotary sealing body 2, the utility model is provided with a seat driving rod 6, a seat rotary shifting sheet 3, a resetting ejector rod 8 and a resetting small spring 7. The seat driving rod 6 is provided with 1 notch B61 along the inner side of the seat rotating plectrum 3, and when the plug is inserted into the socket, the seat base 4 and the internal parts thereof move towards the rear end; the protrusion 31 of the seat rotation poking piece 3 slides into the notch B61 and then is clamped in the notch B61 to push the seat rotation poking piece 3 to rotate inwards, and after the seat rotation poking piece is rotated by 90 degrees, the rotation direction is schematically shown in fig. 7. As shown in fig. 8, the seat rotary paddle 3 is attached to the seat rotary seal body 2, and the seat rotary seal body 2 is also rotated by 90 degrees, and at this time, each seat through hole 21 is also rotated by 90 degrees.

In order to realize reliable rotary sealing and resetting of the head rotary sealing body 10 as shown in fig. 5, 6 and 7, the utility model is provided with a head driving rod 5 at the socket, and a reset tension spring 16 and a head rotary poking sheet 17 at the plug. The head driving rod is in a structure similar to two tuning forks, a notch A51 is respectively arranged on the two forks, and in the process of inserting into the socket, the notch A51 also drives the protrusion C171 of the head rotary poking piece 17 to realize 90-degree rotation of the head rotary poking piece 17 and the head rotary sealing body 10. Of course, in order to realize the simultaneous rotation of the rotary sealing bodies in the plug and the socket, the position of the notch on the head driving rod and the protrusion of the head rotary shifting piece 17 are consistent with the position of the notch on the seat driving rod and the protrusion of the seat rotary shifting piece 3.

As shown in fig. 8, after the rotary sealing body is rotated, the plug is inserted into the plug, and each optical pin assembly 9 can sequentially pass through the socket through hole 21 and the head through hole 101 and cooperate with the optical jack assembly 12 to realize the connection of the optical path.

The process of unplugging the connector is reversed from the process described above. The return spring 7 and the return ram 8 always bear against the projection 32 of the seat rotary paddle 3 and the return tension spring 16 always pulls against the projection D172 of the head rotary paddle 17, which additionally provides a return force to urge the rotary seal body back to the initial position. Compared with the reset only by the gaps of the head driving rod 5 and the seat driving rod 6, the reset device has the advantage that a guarantee is added. As the plug is pulled out, the holder base 4 is also returned to the initial position under the pressure of the return large spring 200. In the whole process, the plug and the socket are in contact with the front end face of the base body and the rotary sealing bodies (2 and 10) protruding a little (0.2-0.5 mm in the embodiment) of the front end face. After contact, the water will be drained. The rotary sealing body is an elastic rubber part, the diameter of the rotary sealing body is 0.03-0.1mm larger than that of a mounting hole arranged in the base body, the rotary sealing body can continue to expand after bearing water pressure in water, and attached microorganisms, seaweed, scraps and the like are extruded at the edge of the base body and cannot be brought into the connector, so that the connector cannot be clamped or deadly.

As shown in fig. 9 and 10. Each optical pin assembly 9 and each optical receptacle assembly 12 is provided with a socket ferrule 93 or a header ferrule, respectively. The optical fibers are respectively bonded in the plug core by epoxy glue, and the end faces are polished. As shown in FIG. 11, the optical pin assembly 9 and the optical jack assembly 12 collectively use a ceramic sleeve to align the stub optical fiber. The seat insert core 93 is installed in the inner hole of the seat sealing body 92, and the rear end of the seat sealing body 92 is provided with an O-shaped ring 91 for optical sealing, so that the pin assembly 9 can be optically sealed. The optical receptacle assembly 12 is completely immersed in the liquid and no sealing is required. The head inserting core is arranged in an inner hole of the inserting core seat, and then an inserting core spring is arranged, so that the close contact of the end face of the optical fiber is realized, and the stable transmission of the optical signal is ensured. The optical receptacle assembly 12 is also provided with a positioning sleeve to assist in pre-compression of the ferrule spring to ensure that a compressive force is provided when the ferrules are mated.

The whole socket adopts a driving rod (a seat driving rod 6 and a head driving rod 5) in the socket to drive a rotary shifting piece (a seat rotary shifting piece 3 and a head rotary shifting piece 17) to rotate for a certain angle (90 +/-10 degrees in the embodiment), the rotary shifting piece is fixedly arranged on a rotary sealing body, and the rotary sealing body rotates for a certain angle along with the rotary shifting piece; meanwhile, in the rotating process, the optical pin assembly 9 sequentially penetrates through the seat base body 4, the rotary sealing bodies (the head rotary sealing body 10 and the seat rotary sealing body 2) in the socket and the plug, and is finally inserted into the optical jack assembly 12 to realize the connection of optical signals. In the process that the plug is pulled out of the socket, the small reset spring 7 and the reset tension spring 16 drive the rotary shifting piece and the rotary sealing body to recover the initial position, and the large reset spring 200 realizes that the base body 4 and the internal parts thereof recover the initial position.

The present invention is not limited to the above embodiments, and those skilled in the art can implement the present invention in other various embodiments according to the present disclosure, since the scope of the present invention is defined by the appended claims.

Claims (10)

1. The utility model provides a wet plug optical connector, includes socket and plug, its characterized in that:

a base body (4), a base rotary sealing body (2), a reciprocating oil bag (201) and an optical pin assembly (9) are sequentially arranged in the base shell (1) of the socket from right to left; the seat base body (4) is arranged in the seat shell (1) in a floating mode, and a large reset spring (200) is arranged between the seat base body (4) and the bottom of the seat shell (1); the optical pin assembly (9) is fixedly arranged at the bottom of the seat shell (1); the base body (4) is provided with a mounting hole for mounting the base rotary sealing body (2); the seat rotary sealing body (2) is of a cylindrical structure, can be rotatably arranged in a mounting hole of the seat base body (4) along the radial direction of the seat base body (4), is provided with seat through holes (21) with the same number of optical pin assemblies (9), and is communicated with an inner cavity of the seat base body (4) when the seat through holes (21) rotate to the axial position of the seat base body (4), and the reciprocating oil bag (201) is arranged in a cavity of the seat base body (4);

a head base body (11), a head rotary sealing body (10), a head oil bag (14), an optical socket assembly (12) and an outlet base (15) are sequentially arranged in a head shell (13) of the plug from left to right; first base member (11) set up in first casing (13) left end cavity, first rotary seal body (10), optical jack subassembly (12) set up in first base member (11), outlet seat (15) set up at the rightmost end of first casing (13) and will first oil bag (14) compress tightly on first casing (13), be equipped with first through-hole (101) unanimous with optical jack subassembly (12) quantity on first rotary seal body (10), first through-hole (101) realize when rotatory first base member (11) axial position with the link up of first base member (11) inner chamber.

2. The wet-pluggable optical connector of claim 1, wherein: the socket is characterized in that the base rotary sealing body (2) and the head rotary sealing body (10) are respectively provided with a base rotary shifting sheet (3) and a head rotary shifting sheet (17), and the socket is internally provided with a base driving rod (6) and a head driving rod (5) which are used for driving the base rotary sealing body (2) and the head rotary sealing body (10) to rotate when a plug is inserted into the socket.

3. The wet-pluggable optical connector of claim 2, wherein: the seat driving rod (6) and the head driving rod (5) can respectively drive the seat rotating shifting sheet (3) and the head rotating shifting sheet (17) to rotate 80-100 degrees.

4. The wet-pluggable optical connector of claim 3, wherein: the seat rotating shifting piece (3) is provided with a protrusion A (31) and a protrusion B (32), and the head rotating shifting piece (17) is provided with a protrusion C (171) and a protrusion D (172).

5. The wet-pluggable optical connector of claim 4, wherein: the seat driving rod (6) is provided with 1 notch B (61) along the inner side of the rotating track of the seat rotating shifting sheet (3), and the protrusion A (31) of the seat rotating shifting sheet (3) slides into the notch B (61) when a plug is inserted into a socket to push the seat rotating sealing body (2) to rotate;

the head driving rod (5) is of a similar-tone fork structure, two forks are respectively provided with a notch A (51), and in the process that a plug is inserted into a socket, the notches drive a protrusion C (171) of the head rotating shifting sheet (17) to realize the rotation of the head rotating sealing body (10); the position of the notch A (51) on the head driving rod (5) matched with the protrusion C (171) of the head rotating shifting piece (17) is consistent with the position of the notch B (61) on the seat driving rod matched with the protrusion A (31) of the seat rotating shifting piece (3).

6. The wet-pluggable optical connector of claim 5, wherein: the plug is also provided with a reset tension spring (16), and one end of the reset tension spring (16) is connected with the protrusion D (172) of the head rotating shifting piece (17); the socket is provided with a small reset spring (7) and a reset ejector rod (8), wherein the small reset spring (7) and the reset ejector rod (8) are connected with a protrusion B (32) of the seat rotating poking sheet (3).

7. The wet-pluggable optical connector of claim 6, wherein: insulating oil is filled in a sealing cavity formed among the seat rotary sealing body (2), the reciprocating oil bag (201) and the seat base body (4); the space between the head base body (11) and the head oil bag (14) is filled with insulating oil, and the optical socket assembly (12) is soaked in the insulating oil.

8. The wet-pluggable optical connector of claim 7, wherein: the head oil bag (14) adopts a wave-shaped structure in the radial direction; the cavity of the reciprocating oil bag (201) is communicated with the outside.

9. The wet-pluggable optical connector of claim 1, wherein: the outer layer of the seat rotary sealing body (2), the outer layer of the head rotary sealing body (10), the reciprocating oil bag (201) and the head oil bag (14) are all made of rubber materials; the diameters of the seat rotary sealing body (2) and the head rotary sealing body (10) are 0.03-0.1mm larger than the diameter of the mounting hole.

10. The wet-pluggable optical connector of claim 1, wherein:

the optical pin assembly (9) and the optical jack assembly (12) are respectively provided with a base plug core (93) and a head plug core, optical fibers are respectively bonded in the base plug core (93) and the head plug core by epoxy glue, and the end faces of the optical fibers are polished; the optical pin assembly (9) and the optical jack assembly (12) are provided with ceramic sleeves to calibrate the butted optical fibers;

the seat insert core (93) is installed in an inner hole of a seat sealing body (92), and the rear end of the seat sealing body (92) is provided with an O-shaped ring (91) for optical sealing;

the head plug core is arranged in an inner hole of the plug core seat, a plug core spring is arranged in the head plug core, and the optical plug hole assembly (12) is also provided with a positioning sleeve.

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