A kind of Optical fiber plug
Technical field
The present invention relates to the physical connection technology in optical communication field, more particularly, relate to a kind of Optical fiber plug that the optical fiber high density connects that is used for.
Background technology
Internet and wireless technology be the interconnected ability of significant enhanced information; These technology are exponential growth in the world; Need to support the flow of several hundred million users' generations; The numerical data of billions of meters is transmitted in the world, realizes through switch, long-distance optical fiber, Metropolitan Area Network (MAN) and other multiple access technologies.Connection between optical fiber and the optical fiber, and optical fiber realizes through connector with being connected all of equipment, along with the interconnected explosive growth of information, the density that optical fiber connects also requires continuous raising, will realize in unit volume that promptly more the optical fiber of multichannel connects.
Because the diameter of optical fiber is very little, even after adding protective seam, diameter is still very little, in the less relatively optical cable of sectional area, can put into hundreds of optical fiber, but at connector end, these optical fiber can make to take up room increases by 20~50 times, even higher.In order to realize that high density connects, need reduce the physical dimension of connector, especially need reduce the physical dimension of Optical fiber plug, to satisfy the raising of the optical fiber Connection Density in the unit volume.When the size that connects plug when optical fiber reduced, the structure of existing Optical fiber plug had been difficult to adapt to, and specifically is the assembling difficulty, and in addition, in order to reduce size, the wall thickness of most of part is near technological limits, and also the intensity to Optical fiber plug has very big influence.
Summary of the invention
The technical matters that the present invention will solve is, the above-mentioned defective to the Optical fiber plug of prior art provides a kind of Optical fiber plug, the needs that connect with the high density that satisfies optical fiber.
The technical solution adopted for the present invention to solve the technical problems is: comprise procapsid and back casing; It is characterized in that; Said procapsid and back casing removably connect; Flexibly connect on the said back casing and be useful on the fastening arm that fastens with fiber adapter, be provided with flexible member between said fastening arm and the said back casing.
In Optical fiber plug of the present invention; Said procapsid front end is provided with first through hole, and the rear end of said procapsid offers opening, contains ferrule assembly in the said procapsid; Said ferrule assembly comprises the tailstock of ceramic insertion core and metal; Said ceramic insertion core is plugged on the front end of said tailstock, and said ferrule assembly also comprises the spring that is enclosed within on the said tailstock, and said ceramic insertion core stretches out procapsid by said first through hole; The front end of said procapsid extends two relative flanges forward, and said ceramic insertion core is between two flanges.
In Optical fiber plug of the present invention, the inwall of said procapsid is provided with that two relative and the groove of stepping down of the arc that said spring is adaptive.
In Optical fiber plug of the present invention; The front end of said back casing is provided with second through hole; The rear end of said tailstock extend in said second through hole, and said spring one end is against on the front end face of this said back casing, and the other end is against on the boss of said tailstock front end;
One side of said back casing has window, and said back casing also comprises the cover plate that covers said window;
The tail end of said back casing is provided with tail pipe, and optical fiber is extend in the back casing by said tail pipe, and extend in the ceramic insertion core through tailstock;
Said tail pipe is a metal tube, and the front-end and back-end of said tail pipe are respectively equipped with annular groove, and the front end of said tail pipe embeds the tail end of said back casing.
In Optical fiber plug of the present invention; Said procapsid and back casing are through clamp connection, and the front end of back casing extends two relative locating pieces forward, and said locating piece inserts in the said procapsid; Said clip wraps in the rear end of said procapsid and the front end of back casing; Said clip comprises sidewall and the two button arms vertical with sidewall that are positioned at the sidewall two ends, has breach on the said button arm, and said procapsid and back casing are provided with the limited block adaptive with said breach.
In Optical fiber plug of the present invention, said fastening arm and said back casing are rotationally connected through bearing pin, and said flexible member is a torsion spring.
In Optical fiber plug of the present invention; The middle part of said fastening arm has a connecting piece; Said header body has two auricles, and said brace is between said two auricles, and said bearing pin passes said brace and said auricle links together said fastening arm and said header body.
In Optical fiber plug of the present invention, have sleeve on the said brace perpendicular to said brace, said torsion spring set is on said sleeve.
In Optical fiber plug of the present invention, the perk up or down of the rear end of said fastening arm is stated the rear end that fastens arm and is provided with hole or breach.
In Optical fiber plug of the present invention, the rear end of said fastening arm is provided with draw ring.
The Optical fiber plug of embodiment of the present invention has following beneficial effect: in Optical fiber plug of the present invention, procapsid and back casing removably connect, and it is easy to assembly that optical fiber connects, and are convenient to manufacture; Be connected with the fastening arm that fastens with adapter on the back casing, make things convenient for the cooperation that is connected of Optical fiber plug and adapter.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the decomposing schematic representation of first embodiment of Optical fiber plug of the present invention;
Fig. 2 is the synoptic diagram of procapsid among first embodiment of Optical fiber plug of the present invention;
Fig. 3 is the sectional view of procapsid among first embodiment of Optical fiber plug of the present invention;
Fig. 4 is the sectional view of first embodiment of Optical fiber plug of the present invention;
Fig. 5 is the decomposing schematic representation of second embodiment of Optical fiber plug of the present invention;
Fig. 6 is the synoptic diagram that first embodiment of Optical fiber plug of the present invention cooperates with adapter.
Fig. 7 is the synoptic diagram of the 3rd embodiment of Optical fiber plug of the present invention;
Fig. 8 is the synoptic diagram of the 4th embodiment of Optical fiber plug of the present invention;
Fig. 9 is the synoptic diagram of the 5th embodiment of Optical fiber plug of the present invention;
Figure 10 is the synoptic diagram of the 6th embodiment of Optical fiber plug of the present invention;
Figure 11 is the synoptic diagram that fastens the 7th kind of form of arm in the Optical fiber plug of the present invention;
Figure 12 is the synoptic diagram that fastens the 8th kind of form of arm in the Optical fiber plug of the present invention.
Embodiment
To understand in order technical characterictic of the present invention, purpose and effect being had more clearly, to contrast accompanying drawing at present and specify embodiment of the present invention.
Extremely shown in Figure 4 like Fig. 1; Be first embodiment of Optical fiber plug of the present invention, the volume of this Optical fiber plug approximately is 1/2 of an existing LC Optical fiber plug, the adapter of same size; Can insert the Optical fiber plug of the present embodiment of twice, Connection Density doubles.This Optical fiber plug comprises procapsid 100 and back casing 200, and procapsid 100 is fixedly connected with back casing 200.
Procapsid 100 front ends are provided with first through hole 101, and the rear end of procapsid 100 offers opening 102, contain ferrule assembly 300 in the procapsid 100; Ferrule assembly 300 comprises the tailstock 320 of ceramic insertion core 310 and metal; Tailstock 320 is made of metal, and comprises head 321 and the cylindrical section 322 that links to each other with head 321, and ceramic insertion core 310 is plugged on the head 321 of tailstock 320; Ferrule assembly also comprises the spring 330 that is enclosed within on the cylindrical section 322; Ceramic insertion core 310 stretches out procapsid 100 by first through hole 101, and the front end of the inner chamber of procapsid 100 is provided with the pit 103 with the shape adaptation of the head 321 of tailstock 320, and head 321 inserts in these pits 103.Be provided with the groove 104 of stepping down of the adaptive arc of two relative and springs 330 at the inwall of procapsid 100, the existence of the groove 104 of stepping down also can make things convenient for ferrule assembly 300 to be assembled in the procapsid 100.In order to protect ceramic insertion core 310, extend two relative flanges 105 forward at the front end of procapsid 100, ceramic insertion core 310 can play the effect of protection to ceramic insertion core 310 like this between two flanges 105.For ease cooperating of Optical fiber plug and fiber adapter, the downside of procapsid 100 is provided with guiding projection 107, and the inwall of fiber adapter then is provided with same gathering sill.
In the present embodiment; Procapsid 100 is fixedly connected through the mode that fastens with back casing 200; Specifically be that front end at back casing 200 extends two back-offs 210 forward; Have the button bit 106 that cooperates with back-off 210 in the procapsid 100, back-off 210 is inserted in the procapsid 100 and snaps in the button bit 106, realizes being fixedly connected of procapsid 100 and back casing 200.
The front end of back casing 200 is provided with second through hole 201, and the rear end of tailstock 320 extend in second through hole 201, and spring 330 1 ends are against on the front end face of this back casing 200, and the other end is against on the boss that is formed by head 321 of tailstock 320 front ends; Because tailstock 320 is made of metal, its cylindrical section 322 is inserted in second through hole 201, relies on the position-limiting action of second through hole 201; The structure of Optical fiber plug is also played the effect of reinforcement; The intensity of Optical fiber plug has been improved in the stressed junction that no longer only focuses on procapsid 100 and back casing 200 that makes front end, when the volume of Optical fiber plug is reduced; Although the wall thickness of housing is attenuate to some extent, the intensity of whole Optical fiber plug still can be satisfied the demand.
The processing of the assembling of Optical fiber plug, and back casing for ease, a side of back casing 200 has window 202; Back casing 200 also comprises the cover plate 220 that covers window 202, because the existence of window, makes back casing 200 injection mo(u)lding more easily; Mold releasability is more convenient; Also can be used as watch window on the other hand, in the time of can observing optical fiber easily and pack into, with the mated condition of tailstock 320 by the tail end of back casing 200.The tail end of back casing 200 is provided with tail pipe 230, and optical fiber 400 is extend in the back casing 200 by tail pipe 230, and extend in the ceramic insertion core 310 through tailstock 320; In the present embodiment, tail pipe 230 is a metal tube, and the front-end and back-end of tail pipe 230 are respectively equipped with annular groove 231,232; The front end of tail pipe 230 embeds the tail end of said back casing 200; It is in-molded with tailstock 200, and annular groove 231 is embedded in the back casing 200, guarantees the reliability of the two connection; The rear end of tail pipe 230 is with aluminum pipe 240; Be pressed with annular groove 232 corresponding annular grooves 241 on the aluminum pipe 240 with tail pipe 220 rear ends; The aramid layers of optical fiber 400 is pressed between aluminum pipe 240 and the tail pipe 230, and the outside of aluminum pipe 240 also is with heat-shrinkable T bush 250, to guarantee the secure fixation to optical fiber 400.
Referring to Fig. 6, when Optical fiber plug of the present invention cooperates with adapter 500, be employed in that mode that the outside of adapter 500 fastens realizes; Specifically be that button bit 501 is set on the outer wall of adapter 500; Corresponding button portion then is set on the Optical fiber plug, realizes the reliable grafting of Optical fiber plug and adapter 500, this mode will have the structure that the inner structure that fastens makes outside fastening into now; Can effectively utilize the inner space of adapter 500, avoid tying up the space of Optical fiber plug.For Optical fiber plug; Specifically be on back casing 200, to be provided with one to fasten arm 260, a connecting piece 261 is extended at the middle part that fastens arm 260, also extends a sleeve 262 on the brace 261; Be with torsion spring 263 on the sleeve 262; Two auricles 203,204 are extended on the top of back casing 200, and brace 261 is at two auricles 203, between 204, and bearing pin 264 passes auricle 203,204 and brace 261 and realizes fastening being rotationally connected of arms 260 and back casing 200; When fastening with adapter 500, torsion spring 263 is pressed on the button bit 501 of adapter 500 the button portion 265 that fastens arm 260 front ends.
The assembling of Optical fiber plug of the present invention is more flexible; A kind of fit is earlier with being encased in the fore shell 100 after 300 assemblings of ceramic insertion core assembly; Procapsid 100 fastens with back casing 200 then, and the tail pipe 230 by back casing 200 penetrates optical fiber 400 then, makes optical fiber 400 enter into ceramic insertion core 310 through tailstock 320; What insert ceramic insertion core 310 is the naked fibre of peeling off behind the sheath, on tail pipe 230, presses aluminum pipe 240 then and puts heat-shrinkable T bush 250.Another kind of fit is penetrated optical fiber earlier, and is passed by second through hole 201 by tail pipe 230; Optical fiber is penetrated the tailstock 320 that is with spring 330; And extend in the ceramic insertion core 310, after completion was partly assembled with ceramic insertion core by elder generation, the back casing 200 with procapsid 100 fitted together again.
As shown in Figure 5, be second embodiment of Optical fiber plug of the present invention, be with the first embodiment difference; In the present embodiment; Procapsid 100 adopts clip 600 to be connected with back casing 200, specifically is that the front end of back casing 200 extends two relative locating pieces 205 forward, and locating piece 205 inserts in the procapsid 200; Play the effect of location, and then clip 600 is wrapped in the rear end of procapsid 100 and the front end of back casing 200.Clip 600 comprises sidewall 610 and the two button arms 620 vertical with sidewall that are positioned at the sidewall two ends; Have breach 621 on the button arm 620; Be respectively equipped with the limited block 108,206 adaptive with breach 621 on procapsid 100 and the back casing 200, limited block 108,206 is stuck in the breach 611.Other structures of the Optical fiber plug of this enforcement and first are that embodiment is identical, repeat no more.It will be appreciated that procapsid 100 can also adopt other any suitable modes to be fixedly connected with back casing 200.
Fig. 7 to Figure 10 is the synoptic diagram of the 3rd to the 6th embodiment of Optical fiber plug of the present invention, and the basic structure of the Optical fiber plug of these four embodiment is identical, and difference only is that the fastening arm of Optical fiber plug is different.
In the 3rd embodiment shown in Figure 8, the tail end that fastens arm 260 connects a draw ring 271, and this draw ring 271 is slidingly connected with back casing; During this draw ring 271 of pulled backwards; The tail end that fastens arm 260 is depressed, and the front end that fastens arm 260 lifts, and fastens arm 260 and threads off with adapter.
In described the 4th embodiment of Fig. 9; The tail end that fastens arm 260 is connected with draw ring 272, and what draw ring 272 was different with the 3rd embodiment is that draw ring 272 is directly to be connected the tail end that fastens arm 260; Through pushing and pull back draw ring 272, can make to fasten arm 260 and adapter dropout.
In the 5th embodiment shown in 10, the tail end 266 that fastens arm 260 is upturned, and can just push fastening like this and just fasten arm 260.And in the 6th embodiment shown in Figure 10, the tail end 266 that fastens arm 260 helps saving the space like this to having a downwarp, and fastening pushing of arm 260 need be undertaken by certain instrument.
Figure 11 and Figure 12 show two kinds of forms that fasten arm again, and the tail end that in Figure 11, fastens arm 260 is provided with hole 267, by tool insert hole 267, can control fastening arm 260 easily fastening arm 260 and adapter are threaded off.And in Figure 12, then be provided with breach 268 at the tail end that fastens arm 260, and can catch on or be stuck in by instrument equally and cover operation fastening arm 260 in the breach 268, fastening arm 260 and adapter are threaded off.The fastening arm of form need be by certain instrument like this, but can avoid false touch to arrive other adjacent Optical fiber plugs.
In Optical fiber plug of the present invention, procapsid contains ferrule assembly, and back casing has window; Guarantee that Optical fiber plug when volume-diminished, has enough receiving spaces and little curved space, in addition; The structure of Optical fiber plug of the present invention also makes things convenient for the processing and the assembling of the parts of Optical fiber plug.
Combine accompanying drawing that embodiments of the invention are described above; But the present invention is not limited to above-mentioned embodiment, and above-mentioned embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.