CN210775916U - Underwater plugging optical fiber connector plug and assembly thereof - Google Patents

Abstract

The utility model relates to an underwater plugging optical fiber connector plug and a component thereof, wherein, the plug comprises a plug shell, a connecting nut assembled outside the plug shell and a plug accessory shell connected with the plug shell; a plug turntable is assembled in the plug housing, a plug stop block and a plug inner housing are sequentially assembled in the plug turntable, a pin mounting inner housing for fixing an optical fiber pin contact element is assembled in the plug inner housing, and a torsion spring is further installed in the center of the pin mounting inner housing; when the head seat is plugged, the plug turntable can rotate to align the optical fiber channel IV with the optical fiber contact pin contact element; after the head seat is separated, the plug turntable rotates back under the action of the torsion spring, so that the optical fiber channel IV and the optical fiber contact pin contact member are staggered to realize the closing of the optical fiber channel. The utility model discloses an inner chamber that the plug was equipped with contact pin contact and silicon oil in the whole in-process plug of plug is in encapsulated situation all the time, can not receive external water influence, through wash port and the interior silicon oil volume change of oil pocket make the plug inside and outside keep balance all the time, can locate the plug at arbitrary depth of water and use.

Description

Underwater plugging optical fiber connector plug and assembly thereof

Technical Field

The utility model relates to a connector technical field specifically is an underwater plugging fiber connector plug and subassembly thereof.

Background

The underwater plugging optical fiber connector is an optical fiber connector which can be used for plugging under water, and is required to be provided with a static and dynamic sealing structure, the plugging and the separating states in water can keep the internal sealing of the connector, and the optical fiber contact members are butted in a sealing cavity and cannot be polluted by the outside, so that optical signals are effectively transmitted. The existing underwater plug connector cannot meet the use environment of deep water and high water pressure, so that silicone oil in the connector leaks and sealing fails in the deep water environment.

Disclosure of Invention

In order to overcome the defects, the utility model provides an underwater plugging optical fiber connector plug and subassembly thereof, no matter the plug is to inserting or the whole in-process of separation with the socket when using under water, the inner chamber that is equipped with optic fibre contact pin contact and silicon oil in the plug is in encapsulated situation all the time, and external water etc. can not lead to the fact the influence to it when the plug is under water. Simultaneously, oil pocket II in the plug and wash port cooperation make the interior external pressure of plug connector keep balance all the time, make the utility model discloses a plug and subassembly can carry out the plug in arbitrary water depths under sealed effectual circumstances.

The technical problem to be solved by the utility model is realized by adopting the following technical proposal, according to the utility model, the underwater pluggable optical fiber connector plug comprises a plug shell, a connecting nut assembled outside the plug shell and a plug accessory shell connected with the plug shell; the plug is characterized in that a plug turntable is assembled in a plug shell, a plug stop block and a plug inner shell are sequentially assembled in the plug turntable from front to back, a corrugated spring is assembled between the plug inner shell and the plug stop block, a pin mounting inner shell for fixing an optical fiber pin contact element is assembled in the plug inner shell, the insertion end of the optical fiber pin contact element is positioned in an optical fiber channel III on the plug stop block, and a torsion spring is further installed in the center of the pin mounting inner shell; when the head seat is plugged, the plug turntable can rotate so as to align the optical fiber channel IV on the plug turntable with the optical fiber contact pin contact element; after the head seat is separated, the plug turntable rotates back under the action of the torsion spring to enable the optical fiber channel IV and the optical fiber contact pin contact member to be staggered, so that the optical fiber channel of the plug is closed.

Furthermore, an oil bag II is arranged in the inner cavity of the plug accessory shell, silicone oil is filled in the oil bag II, a drain hole is formed in the plug accessory shell, and when the connector is plugged and separated, water outside the oil bag II enters or is drained through the drain hole, so that the volume of the silicone oil in the oil bag II is changed, and the internal pressure of the plug connector is kept balanced with the external seawater pressure all the time.

Furthermore, the outer wall surface of the insertion end of the plug turntable is a conical surface; the plug turntable is also provided with a notch which is used for matching with a single key II on the plug inner shell to realize the control of the rotation angle of the plug turntable.

Furthermore, the inner wall of the optical fiber channel IV is a conical surface, so that the diameter of one surface of the optical fiber channel IV adjacent to the plug stop block is large, and the diameter of the other surface of the optical fiber channel IV is small, and a protrusion IV which is in a conical surface is arranged between two adjacent optical fiber channels III on the plug stop block and is used for being matched with the optical fiber channel IV to close the optical fiber channel IV; when the plug turntable rotates, the bulge IV is always tightly attached to the plug turntable under the action of the corrugated spring; and when the optical fiber channel of the plug is in a closed state, the protrusion IV is inserted into the optical fiber channel IV to ensure that the optical fiber contact pin contact part does not correspond to the optical fiber channel IV, and an O-shaped sealing ring IV is further arranged on the periphery of the protrusion IV to further seal the space between the plug turntable and the plug stop block.

Furthermore, an elastic clamping hook type locking sheet is arranged on the wall surface of the plug shell, which is connected with the nut; under the action of pulling force, the connecting nut can move towards the tail of the plug relative to the locking sheet, so that the conical surface I on the connecting nut presses the conical surface II on the locking sheet to realize unlocking.

An underwater plugging optical fiber connector assembly comprises a plug, wherein the plug comprises a plug shell, a connecting nut assembled outside the plug shell and a plug accessory shell connected with the plug shell; the plug is characterized in that a plug turntable is assembled in a plug shell, a plug stop block and a plug inner shell are sequentially assembled in the plug turntable from front to back, a corrugated spring is assembled between the plug inner shell and the plug stop block, a pin mounting inner shell for fixing an optical fiber pin contact element is assembled in the plug inner shell, the insertion end of the optical fiber pin contact element is positioned in an optical fiber channel III on the plug stop block, and a torsion spring is further installed in the center of the pin mounting inner shell; when the head seat is plugged, the plug turntable can rotate so as to align the optical fiber channel IV on the plug turntable with the optical fiber contact pin contact element; after the head seat is separated, the plug turntable rotates back under the action of the torsion spring to enable the optical fiber channel IV and the optical fiber contact pin contact member to be staggered, so that the optical fiber channel of the plug is closed.

Furthermore, an oil bag II is arranged in the inner cavity of the plug accessory shell, silicone oil is filled in the oil bag II, a drain hole is formed in the plug accessory shell, and when the connector is plugged and separated, water outside the oil bag II enters or is drained through the drain hole, so that the volume of the silicone oil in the oil bag II is changed, and the internal pressure of the plug connector is kept balanced with the external seawater pressure all the time.

Furthermore, the outer wall surface of the insertion end of the plug turntable is a conical surface; the plug turntable is also provided with a notch which is used for matching with a single key II on the plug inner shell to realize the control of the rotation angle of the plug turntable.

Furthermore, the inner wall of the optical fiber channel IV is a conical surface, so that the diameter of one surface of the optical fiber channel IV adjacent to the plug stop block is large, and the diameter of the other surface of the optical fiber channel IV is small, and a protrusion IV which is in a conical surface is arranged between two adjacent optical fiber channels III on the plug stop block and is used for being matched with the optical fiber channel IV to close the optical fiber channel IV; when the plug turntable rotates, the bulge IV is always tightly attached to the plug turntable under the action of the corrugated spring; and when the optical fiber channel of the plug is in a closed state, the protrusion IV is inserted into the optical fiber channel IV to ensure that the optical fiber contact pin contact part does not correspond to the optical fiber channel IV, and an O-shaped sealing ring IV is further arranged on the periphery of the protrusion IV to further seal the space between the plug turntable and the plug stop block.

Furthermore, an elastic clamping hook type locking sheet is arranged on the wall surface of the plug shell, which is connected with the nut; under the action of pulling force, the connecting nut can move towards the tail of the plug relative to the locking sheet, so that the conical surface I on the connecting nut presses the conical surface II on the locking sheet to realize unlocking.

Compared with the prior art, the utility model has the advantages of it is following:

(1) the utility model discloses thereby set up the plug carousel and make the plug carousel rotate when the headstock is to inserting thereby the fiber channel on making the plug carousel IV and the interior fiber contact pin contact of plug are adjusted well and are realized that plug fiber channel opens and be convenient for and socket optic fibre realize the butt joint, thereby the headstock separation back under the torsional spring effect plug carousel circle round to make fiber channel IV and fiber contact pin contact dislocation realize parts such as fiber contact pin contact in the fiber channel IV closed protection plug connector.

(2) The utility model discloses set up on the plug dog with the protruding IV of the IV adaptation of the optic fibre passageway on the plug carousel be used for inserting optic fibre passageway IV and cooperate O type sealing washer IV to play sealed effect when plug optic fibre passageway is closed, set up ripple spring simultaneously between plug dog and plug carousel, the plug carousel rotates the in-process, under the ripple spring effect, the plug carousel plays sealed effect is hugged closely all the time to protruding IV.

(3) The utility model discloses insert the end of closing with the socket carousel and insert the end of closing with the plug carousel and all design for the conical surface can better arrange the water on every side faster when inserting to close. The plug is internally sealed by O-shaped sealing rings, for example, an O-shaped sealing ring VI arranged between the plug inner shell and the plug turntable and an O-shaped sealing ring VII arranged between the plug shell and the plug inner shell, the inner cavity of the plug, which is internally provided with an optical fiber contact pin contact element and silicon oil, is always in a sealing state no matter in the whole process of butt-plugging or separation, and external water bodies and the like can not influence the plug during underwater plugging. Simultaneously, make the internal and external pressure of plug keep balance all the time through the cooperation of oil pocket II and wash port, make the utility model discloses a plug can be in the use of arbitrary depth of water under sealed effectual condition.

Drawings

Fig. 1 is a sectional view of the receptacle connector of the present invention.

Fig. 2 is a schematic view of a rotating structure of the socket.

Fig. 3 is a schematic view of the components of fig. 2 assembled in place.

Fig. 4 is a schematic view of a receptacle fibre channel in a closed state.

Fig. 5 is a schematic view of the receptacle fibre channel in an open state.

Fig. 6 is a cross-sectional view of the plug connector of the present invention.

Fig. 7 is a schematic view of a plug rotation structure.

Fig. 8 is a schematic view of a plug fiber channel closed state.

Fig. 9 is a schematic view of the open state of the plug fiber channel.

Fig. 10 is a schematic view of the overall structure of the optical fiber connector of the present invention.

Fig. 11 is a schematic diagram of the unplugged state of the optical fiber connector according to the present invention.

Fig. 12 is a schematic view illustrating the initial plugging state of the optical fiber connector according to the present invention.

Fig. 13 is a schematic diagram of the state of the optical fiber connector of the present invention inserted in place.

Element and symbol description:

1: socket housing, 2: sleeve, 3: socket carousel, 4: socket stopper, 5: socket accessory housing, 6: socket inner housing, 7: casing in the mounting hole, 8: fiber receptacle contact, 9: spring, 10: step I, 11: oil pocket i, 12: retainer ring, 13: gasket, 14: nut, 15: stuffing box, 16: protrusion i, 17: through groove, 18: starting point of through groove, 19: through groove end point, 20: fiber channel i, 21: fiber channel ii, 22: and (3) protrusion II, 23: o-shaped seal ring I, 24: single bond i, 25: key groove i, 26: o-ring ii, 27: o-shaped seal ring III, 28: plug housing, 29: coupling nut, 30: plug carousel, 31: plug inner housing, 32: plug stopper, 33: needle-installing inner shell, 34: plug accessory housing, 35: ripple spring, 36: torsion spring, 37: plug outer retainer, 38: fiber stub contact, 39: oil pocket ii, 40: locking tab, 41: receptacle ferrule tail, 42: conical surface i, 43: taper ii, 44: single bond II, 45: notch, 46: projection iii, 47: groove, 48: fiber channel iii, 49: projection iv, 50: fiber channel iv, 51: o-shaped seal ring IV, 52: convex key, 53: key groove ii, 54: plug turnplate insertion end conical surface, 55: socket turntable plugging end conical surface, 56: drain hole, 57: o-shaped sealing ring V, 58: o-shaped sealing ring VI, 59: and an O-shaped sealing ring VII.

Detailed Description

In order to further explain the technical means and technical effects of the present invention, the following embodiments are combined to explain the present invention in detail.

It should be noted that: the terms indicating the position such as "front", "back", "tail end", "tail" and the like in the present invention are all based on the position or position relationship shown in the drawings, and are only for convenience of description, and therefore, the present invention cannot be understood as being limited to the present invention. Specifically, one end of the socket and one end of the plug, which are inserted together, are defined as a socket front end and a plug front end, and the other ends of the socket and the plug are defined as tail ends of the socket and the plug, respectively. The orientation of the front and the back is consistent with the orientation of the front end and the tail end.

The utility model discloses an underwater plug connector subassembly includes socket connector and the plug connector to the plug with this socket connector, as shown in fig. 1, the socket connector includes socket housing 1, the assembly is at the outer sleeve pipe 2 of socket housing, the assembly is located socket carousel 3 and the socket dog 4 of socket plug-in end in the socket housing, the socket annex casing 5 of being connected with socket housing, wherein the socket carousel is located before the socket dog, still be equipped with socket inner housing 6 in the socket housing, this socket inner housing is located behind the socket dog, still be fixed with the downthehole casing 7 of dress in the socket inner housing cavity, four single core fiber optic jack contact 8 of group are fixed through the locating pawl and are used for realizing fiber connection to the plug with the fiber optic inserting needle contact of plug connector in the downthehole casing. The outer periphery of the socket inner shell is provided with a spring 9 for providing elasticity for the movement of the socket rotary disc and the socket stop block, one end of the spring is limited by the socket stop block, and the other end of the spring is limited by a step I10 on the socket shell. A space is reserved between the socket inner shell and the socket stop block, so that the socket stop block and the socket rotary disc can move axially in the socket inner shell. An oil bag I11 is assembled in the inner cavity of the socket accessory shell, silicone oil is filled in the oil bag I, and the internal pressure of the socket connector and the external seawater pressure are kept balanced through the change of the volume of the silicone oil in the oil bag I when the connector is plugged and separated. The oil bag I is sealed in a pressing mode, one end of the oil bag I is pressed between the socket inner shell and the socket accessory shell, and the other end of the oil bag I is pressed and sealed on the tail shell of the socket accessory shell through a check ring 12 and a gasket 13. The material coefficient of friction on packing ring two sides is different, and retaining ring and packing ring are all metal, can skid, and difficult skidding between packing ring and the oil pocket I, when screwing up the retaining ring, oil pocket I can not rotate, if do not have the packing ring, the retaining ring then can take oil pocket I to rotate together. The tail of the socket accessory shell is connected with a four-core deep sea optical cable, and the optical cable passes through a nut 14 at the tail of the socket accessory shell, is sealed between the stuffing box 15 and the socket accessory shell and is packaged in a vulcanization mode (the technology is prior art and is not described in detail herein).

As shown in fig. 2, a protrusion i 16 is arranged on the outer circumference of the receptacle rotary table and can slide along a through groove 17 on the receptacle housing, so that the receptacle rotary table can rotate while moving linearly in the axial direction, when the protrusion i slides from a starting point 18 to an end point 19 of the through groove, the receptacle rotary table is driven to rotate, so that an optical fiber channel i 20 on the protrusion i is gradually aligned with an optical fiber channel ii 21 on a receptacle stopper, and the receptacle optical fiber channel is opened, otherwise, when the protrusion i slides from the end point to the starting point of the through groove, the receptacle rotary table is driven to rotate, so that the optical fiber channel i and the optical fiber.

The inner wall surface of the optical fiber channel I on the socket turntable is in a conical shape, so that the diameter of one surface, adjacent to the socket stop block, of the optical fiber channel I is large, and the diameter of the other surface of the optical fiber channel I is small, as shown in figure 5. One embodiment is that four fiber channel II are arranged on the socket stop block, a protrusion II 22 which is a conical surface is arranged between every two adjacent fiber channel II and is used for being matched with the fiber channel I, and an O-shaped sealing ring I23 which is embedded into a groove on the end face of the socket stop block is arranged on the periphery of each protrusion II, as shown in figure 2. Under the condition of four optical fiber channels II and four bulges II, the included angle (central angle) between the center of each bulge II and the center of the optical fiber channel II adjacent to the bulge II on the same section is 45 degrees. Under the fibre channel closure state of socket carousel and socket dog, protruding II on the socket dog inserts in fibre channel I, and the conical surface on protruding II closely pastes and makes fibre channel I seal under the effect of O type sealing washer I23 with the conical surface of I inner wall of fibre channel, and at this moment, fibre channel I all is not corresponding with fibre channel II, all regards as the closure state separately, as shown in figure 4. When the socket and the plug are plugged, the protrusion I on the socket turntable slides along the through groove under the action of plugging force to enable the socket turntable to rotate 45 degrees, so that the optical fiber channel I is aligned with the optical fiber channel II to enable the optical fiber channel to be opened, as shown in fig. 5. On the contrary, when the protrusion I slides to the starting point from the end point of the through groove along the through groove, the socket turntable rotates reversely by 45 degrees to enable the optical fiber channel I and the protrusion II to correspond to each other so as to enable the optical fiber channel I and the optical fiber channel II to be closed.

Seal through O type sealing washer I23 between socket carousel and the socket dog, protruding II and the I cooperation of fibre channel that lie in this O type sealing washer I23 simultaneously, when the socket carousel rotates, because protruding II all is conical surface structure with fibre channel I, the socket dog can separate a segment distance with the socket carousel, nevertheless because receive the spring force effect, the socket carousel is hugged closely all the time to protruding II on the socket dog, the inner chamber that is equipped with fibre jack contact 8 and silicon oil in the final realization socket of effect of O type sealing washer I23 is in sealed environment all the time.

Furthermore, a single key I24 is further arranged on the socket stop block and is used for being matched with a key groove I25 on the socket shell to enable the socket stop block and the socket rotary disc to move in a reciprocating axial linear mode in the socket shell, and the initial position of a protrusion I16 on the socket rotary disc is located at the starting point of the through groove and limited by the front end of a sleeve outside the socket shell, so that the socket rotary disc, the socket stop block, a spring and the like are limited in the socket shell. The parts in the socket shell are sealed through O-shaped sealing rings, such as an O-shaped sealing ring II 26 arranged between the sleeve and the socket rotary disc, an O-shaped sealing ring III 27 arranged between the sleeve and the socket shell and an O-shaped sealing ring V57 arranged between the socket shell and the socket inner shell.

Fig. 6 shows a cross-sectional view of a plug, and the plug connector includes a plug housing 28, a coupling nut 29 fitted outside the plug housing, a plug turn plate 30 fitted inside the plug housing, a plug inner housing 31 and a plug stopper 32 fitted inside the plug turn plate, a pin inner housing 33 fitted inside the plug inner housing, a plug attachment housing 34 connected to the plug housing, and the like, the plug inner housing 31 being located behind the plug stopper 32 with a wave spring 35 fitted therebetween. The centre of the needle mounting inner shell is also provided with a torsional spring 36 for providing elasticity for the rotation of the plug turntable, and two ends of the torsional spring are respectively limited by the plug turntable and the tail end of the needle mounting inner shell. The plug turntables are held by the plug outer retainer 37 so that the plug turntables cannot move axially. Four sets of single-core optical fiber contact pins 38 shown in fig. 6 are fixed in the pin-in inner housing 33 by positioning claws for realizing optical fiber connection by being inserted into the optical fiber jack contact 8 in the socket. An oil bag II 39 is assembled in the inner cavity of the plug accessory shell, silicone oil is filled in the oil bag II, the internal pressure of the plug connector and the external seawater pressure are kept balanced through the change of the volume of the silicone oil in the oil bag II when the connector is plugged in and separated, the assembling mode of the oil bag II is the same as that of the oil bag I in the socket connector, one end of the oil bag II is extruded and assembled between the plug shell and the plug accessory shell, and the other end of the oil bag II is extruded and sealed on the tail shell of the plug accessory shell through a check ring and a gasket, so that the details are not repeated. The tail part of the plug is connected with a four-core deep sea optical cable, and the optical cable is sealed with the plug accessory shell through a stuffing box and is packaged in a vulcanization mode. The parts in the plug shell are sealed by O-shaped sealing rings, such as an O-shaped sealing ring VI 58 arranged between the plug inner shell and the plug turntable and an O-shaped sealing ring VII 59 arranged between the plug shell and the plug inner shell.

The wall surface of the connecting nut outside the plug shell is provided with three elastic clamping hook type locking sheets 40 which are used for being clamped at the tail part 41 of the socket sleeve after being plugged with the socket connector to realize the connection and locking between the socket connector and the socket connector. Under the action of pulling force, the connecting nut can move towards the tail of the plug relative to the locking sheet, so that the conical surface I42 on the connecting nut presses the conical surface II 43 on the locking sheet to realize unlocking. Still be provided with II 44 single keys on the plug inner shell and be used for realizing plug carousel turned angle control with breach 45 cooperation on the plug carousel, when the plug carousel rotates and makes II single keys move to the other end from breach one end, should be able to make the fibre channel IV on the plug carousel and fibre contact pin contact well to be aligned, should be able to make fibre channel IV and fibre contact pin contact not correspond when the plug carousel rotates backward. Two protrusions III 46 at the front end of the plug turntable are matched with two grooves 47 on the socket turntable when the head seat is plugged, so that the socket turntable drives the plug turntable to rotate synchronously. The protrusion III 46 and the groove 47 shown in the drawings are both semicircular, and in other embodiments, the protrusion III 46 and the groove 47 can be in other shapes, but the protrusion III 46 and the groove 47 need to be in the same shape and fit with each other.

The sealing mode between the socket turntable and the socket stop block is the same, and a conical protrusion IV 49 is arranged between two adjacent optical fiber channels III 48 on the plug stop block and is used for being matched with an optical fiber channel IV 50 on the plug turntable to close the optical fiber channel IV; the mating end of the fiber stub contact 38 fits into the fiber channel iii 48, and the fiber stub contact is not shown in fig. 9, see fig. 6 in particular. The inner wall of the optical fiber channel IV is also in a conical surface structure, so that the diameter of one surface, adjacent to the plug stop block, of the optical fiber channel IV is larger than that of the other surface. And under the closed state of the optical fiber channel of the plug, the bulges IV 49 are inserted into the optical fiber channel IV to ensure that the optical fiber contact pin contact part in the optical fiber channel III does not correspond to the optical fiber channel IV, and an O-shaped sealing ring IV 51 embedded into a groove on the end face of the plug stop block is arranged on the periphery of each bulge IV for further sealing between the plug turntable and the plug stop block. When the head seat is plugged, the semicircular bulge III 46 on the plug is matched with the semicircular groove 47 on the socket, so that the socket turntable drives the plug turntable to rotate by the same angle (45 degrees), the optical fiber channel IV is aligned with the optical fiber contact pin contact element and is aligned with the optical fiber channel I and the optical fiber channel II in the socket, and the opposite plugging of the optical fiber contact pin contact element and the optical fiber jack contact element is realized. When the plug turntable rotates, the protrusion IV and the optical fiber channel IV are both in conical surface structures, the plug stop block can be separated from the plug turntable by a small distance, but the protrusion IV on the plug stop block is always tightly attached to the plug turntable under the elastic action of the rear corrugated spring 35, and the effect of the O-shaped sealing ring IV 51 embedded into the groove on the end face of the plug stop block on the periphery of the protrusion IV finally realizes that the inner cavity, in which the optical fiber contact pin contact element and the silicon oil are arranged, in the plug connector is always in a sealed environment.

The utility model discloses a principle and process when connector subassembly head seat is to inserting as follows:

fig. 11 shows the utility model discloses the connector assembly does not insert the schematic diagram of closing the state, and at this moment, the respective carousel of plug and socket all is in initial condition, and fibre channel between them all is not opened, and when inserting, the cooperation of protruding key 52 on the socket sleeve pipe and the keyway II 53 on the coupling nut of plug is guided to inserting and is realized inserting to close accurate positioning and guarantee fibre channel I and fibre channel IV to adjust well to insert to close. Fig. 12 is a schematic view showing a state that the plug turntable and the socket turntable are aligned and start to be inserted, and the outer wall surface of the insertion end of the plug turntable and the inner wall surface of the insertion end of the socket turntable are both conical surfaces, which is beneficial to better and faster draining of surrounding water. When the connector is further inserted, under the action of inserting force, the protrusion I on the socket rotary disc slides along the through groove to enable the socket rotary disc and the socket stop block to move towards the tail of the socket, so that the outer circumferential conical surface of the inserting end of the plug rotary disc firstly passes through the O-shaped sealing ring II 26 at the front end of the socket and is sealed, and the connector is sealed inside and outside in the inserting process. The plug and the socket tail accessory shell are respectively provided with the drain hole 56, so that water in and out of water outside the oil bag I and the oil bag II can be conveniently discharged and discharged when the volumes of the oil bag I and the oil bag II in the connector are changed, the internal and external pressure balance of the connector can be always kept, and the risk of sealing failure is reduced. When the protrusion I slides to the end position of the through groove, the optical fiber channel I and the optical fiber channel II are aligned, due to the matching of the semicircular protrusion III 46 and the semicircular groove 47, the socket turntable drives the plug turntable to synchronously rotate, so that the optical fiber channel IV is aligned with the optical fiber contact pin, because the optical fiber channel II is aligned with the optical fiber contact hole all the time, the optical fiber channel I and the optical fiber channel IV are aligned all the time in the inserting and combining process, and finally, after the inserting and combining are in place, the optical fiber contact pin, the optical fiber channel IV, the optical fiber channel I, the optical fiber channel II and the optical fiber contact hole are aligned all the time, the optical fiber contact pin and the optical fiber contact hole are in butt joint, and meanwhile, three.

The connector separation process is opposite to the opposite insertion process, the plug connecting nut is pulled backwards firstly, the conical surface II 43 on the locking sheet clamping hook is lifted up from the tail end of the socket sleeve by the connecting nut under the action of the conical surface I42 on the connecting nut, then the plug is continuously pulled out to realize separation, and the socket rotary disc rotates in the opposite direction along the through groove under the action of the rear end spring 9 and moves linearly to enable the optical fiber channel I and the optical fiber channel II to be automatically closed. The plug turntable rotates around under the elasticity of the torsion spring, and the optical fiber channel IV and the optical fiber channel III are synchronously closed.

Therefore, in the whole process of plugging and separating the connectors, the inner cavity provided with the optical fiber jack contact element and the silicone oil in the socket connector and the inner cavity provided with the optical fiber pin contact element and the silicone oil in the plug connector are always in a sealed state, and external water bodies and the like cannot influence the connectors when the connectors are plugged and pulled underwater. Simultaneously, because the effect of oil pocket I and oil pocket II makes the interior external pressure of connector keep balance all the time, so can insert and draw in arbitrary water depths under sealed effectual circumstances.

The attached drawings are illustrated by taking 4 jack contact elements, 4 pin contact elements, 4O-shaped seal rings I23 and four O-shaped seal rings IV as examples, under the condition, the rotation angle degree of the socket turntable is 45 degrees, but the utility model is not limited to four-core pin jacks, the rotation angle degree of the socket turntable is not limited to 45 degrees, under other conditions, as long as the numbers of the optical fiber channel I, the optical fiber channel II, the bulge II, the optical fiber channel III, the optical fiber channel IV, the bulge IV, the optical fiber jack contact elements and the optical fiber pin contact elements are equal, and the rotation of the socket turntable when the bulge I slides from the starting point to the ending point along the through groove can ensure that the optical fiber channel I is finally aligned with the optical fiber channel II from the beginning through the rotation and simultaneously drives the plug turntable to rotate so that the optical fiber channel IV is aligned with the optical fiber pin contact elements, and can ensure that the optical fiber channel I, the optical, And closing the optical fiber channel II and the optical fiber channel IV.

Fig. 2 shows there are three protruding I and three logical groove, nevertheless the utility model discloses not be limited to this, under the four-core contact pin jack condition shown in the drawing, also can be four logical grooves or five logical grooves or two logical grooves etc. protruding I number equals and every logical groove can realize protruding I along leading to the groove when sliding that the degree of socket carousel circumference is rotatory can realize opening or being closed of fibre channel I, fibre channel II, fibre channel IV.

The utility model discloses the concrete structure of plug is the same with the structure of plug in the above-mentioned connector assembly embodiment, and this is no longer repeated.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any person skilled in the art can make any simple modification, equivalent change and modification to the above embodiments according to the technical spirit of the present invention without departing from the scope of the present invention.

Claims (10)

1. An underwater plugging optical fiber connector plug comprises a plug shell, a connecting nut assembled outside the plug shell and a plug accessory shell connected with the plug shell; the optical fiber plug is characterized in that a plug turntable is assembled in a plug shell, a plug stop block and a plug inner shell are sequentially assembled in the plug turntable from front to back, a corrugated spring is assembled between the plug inner shell and the plug stop block, a pin mounting inner shell for fixing an optical fiber pin contact element is assembled in the plug inner shell, the insertion end of the optical fiber pin contact element is positioned in an optical fiber channel III on the plug stop block, and a torsion spring is further installed in the center of the pin mounting inner shell; when the head seat is plugged, the plug turntable can rotate so as to align the optical fiber channel IV on the plug turntable with the optical fiber contact pin contact element; after the head seat is separated, the plug turntable rotates back under the action of the torsion spring to enable the optical fiber channel IV and the optical fiber contact pin contact member to be staggered, so that the optical fiber channel of the plug is closed.

2. The underwater pluggable optical fiber connector plug of claim 1, wherein an oil bag ii is installed in an inner cavity of the plug accessory housing, the oil bag ii is filled with silicone oil, a drain hole is further formed in the plug accessory housing, and when the connector is plugged and separated, water outside the oil bag ii enters or is drained through the drain hole, so that the volume of the silicone oil inside the oil bag ii is changed, and thus the internal pressure of the plug connector is always kept balanced with the external seawater pressure.

3. The underwater pluggable optical fiber connector plug of claim 1, wherein an outer wall surface of a plugging end of the plug turntable is a tapered surface; the plug turntable is also provided with a notch which is used for matching with a single key II on the plug inner shell to realize the control of the rotation angle of the plug turntable.

4. The underwater pluggable optical fiber connector plug of claim 1, wherein the inner wall of the optical fiber channel iv is a conical surface, so that one surface of the optical fiber channel iv adjacent to the plug stop block has a large diameter and the other surface has a small diameter, and a conical protrusion iv is arranged between two adjacent optical fiber channels iii on the plug stop block and is adapted to the optical fiber channel iv to close the optical fiber channel iv; when the plug turntable rotates, the bulge IV is always tightly attached to the plug turntable under the action of the corrugated spring; and when the optical fiber channel of the plug is in a closed state, the protrusion IV is inserted into the optical fiber channel IV to ensure that the optical fiber contact pin contact part does not correspond to the optical fiber channel IV, and an O-shaped sealing ring IV is further arranged on the periphery of the protrusion IV to further seal the space between the plug turntable and the plug stop block.

5. The underwater pluggable optical fiber connector plug of claim 1, wherein the wall surface of the plug housing outer connection nut is provided with an elastic hook type locking sheet; under the action of pulling force, the connecting nut can move towards the tail of the plug relative to the locking sheet, so that the conical surface I on the connecting nut presses the conical surface II on the locking sheet to realize unlocking.

6. An underwater plugging optical fiber connector assembly comprises a plug, wherein the plug comprises a plug shell, a connecting nut assembled outside the plug shell and a plug accessory shell connected with the plug shell; the optical fiber plug is characterized in that a plug turntable is assembled in a plug shell, a plug stop block and a plug inner shell are sequentially assembled in the plug turntable from front to back, a corrugated spring is assembled between the plug inner shell and the plug stop block, a pin mounting inner shell for fixing an optical fiber pin contact element is assembled in the plug inner shell, the insertion end of the optical fiber pin contact element is positioned in an optical fiber channel III on the plug stop block, and a torsion spring is further installed in the center of the pin mounting inner shell; when the head seat is plugged, the plug turntable can rotate so as to align the optical fiber channel IV on the plug turntable with the optical fiber contact pin contact element; after the head seat is separated, the plug turntable rotates back under the action of the torsion spring to enable the optical fiber channel IV and the optical fiber contact pin contact member to be staggered, so that the optical fiber channel of the plug is closed.

7. The underwater pluggable optical fiber connector assembly as recited in claim 6, wherein an oil bag ii is installed in the inner cavity of the plug accessory housing, the oil bag ii is filled with silicone oil, and a water drain hole is further formed in the plug accessory housing, so that water outside the oil bag ii enters or is drained through the water drain hole when the connector is plugged in and disconnected, and the volume of the silicone oil inside the oil bag ii is changed, thereby keeping the internal pressure of the plug connector balanced with the external seawater pressure all the time.

8. The underwater pluggable optical fiber connector assembly of claim 6, wherein the outer wall surface of the plugging end of the plug turret is a tapered surface; the plug turntable is also provided with a notch which is used for matching with a single key II on the plug inner shell to realize the control of the rotation angle of the plug turntable.

9. The underwater pluggable optical fiber connector assembly of claim 6, wherein the inner wall of the optical fiber channel IV is a conical surface so that one surface of the optical fiber channel IV adjacent to the plug stop block has a large diameter and the other surface of the optical fiber channel IV has a small diameter, and a conical protrusion IV is arranged between two adjacent optical fiber channels III on the plug stop block and is adapted to the optical fiber channel IV so as to close the optical fiber channel IV; when the plug turntable rotates, the bulge IV is always tightly attached to the plug turntable under the action of the corrugated spring; and when the optical fiber channel of the plug is in a closed state, the protrusion IV is inserted into the optical fiber channel IV to ensure that the optical fiber contact pin contact part does not correspond to the optical fiber channel IV, and an O-shaped sealing ring IV is further arranged on the periphery of the protrusion IV to further seal the space between the plug turntable and the plug stop block.

10. The underwater pluggable optical fiber connector assembly of claim 6, wherein the wall surface of the external connection nut of the plug housing is provided with an elastic hook-type locking piece; under the action of pulling force, the connecting nut can move towards the tail of the plug relative to the locking sheet, so that the conical surface I on the connecting nut presses the conical surface II on the locking sheet to realize unlocking.

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