Anti-misplugging optical connector plug
Technical field
The present invention relates to the optical connector for optical signal transmission.
Background technology
General optical connector is as LC connector, SC connector, conventionally by optical connector plug and the optical adapter coordinating of pegging graft, formed in use, because the version of optical connector plug of transmission unlike signal is the same, when pegging graft, easily the optical connector plug of transmission unlike signal is obscured, cause and misplug, because plug is numerous, once occur mispluging, detect quite difficulty, increase the difficulty of wiring.In order to solve the problem of mispluging, in prior art if Chinese patent notification number is CN 201845103, title is for ease of disclosing a kind of SC plug with plug information storage chip and a kind of SC adapter with pilot lamp in the SC connector assembly of anti-mis-insertion identification and the patent documentation of SC plug and adapter, the plug information storage chip of this SC plug is arranged in printed board, printed board is arranged in the groove of offering on the side of stationary housing of SC plug head suit, in printed board, be also provided with corresponding pad welding in printed board, the metal conductive strips that inside cabling by printed board is electrically connected to information identification chip, and SC adapter is provided with the shell fragment of the metal conductive strips conductive contact when pegging graft with SC plug and on SC plug, shell fragment has for the plug storing information on SC plug being inputted to the pin of corresponding circuit board, pilot lamp on SC adapter has the pin being connected with the signal output part conduction of related circuit plate in addition.Plug information exchange in plug information storage chip on above-mentioned SC plug is crossed the metallic elastic part input circuit plate of metal conductive strips, SC adapter, identification circuit in circuit board judges according to the plug information of input, when information is coincide, output signal control pilot lamp is bright, show to peg graft errorless, otherwise output signal not, pilot lamp does not work, and realizes anti-mis-insertion.
The stationary housing that above-mentioned SC plug need install in plug outside a housing type additional could assemble the printed board with information identification chip, cause the adding of this housing type stationary housing SC plug can not be with the SC adapter of the universal standard compatible and installation inconvenience.In addition, its printed board is in the outward extending draw-in groove being fastened on the groove both sides cell wall of stationary housing, this structure makes printed board major part be exposed to outer and easily damages, and the insertion of printed board could be realized in the draw-in groove edge that must extend to stationary housing, cause like this groove development length to take up room larger, and printed board is stayed easier impaired near the part in the draw-in groove at stationary housing edge or is extracted.
Summary of the invention
The object of the present invention is to provide a kind of anti-error part not affect inserting compatible anti-mis-insertion optical connector.
For achieving the above object, technical scheme of the present invention: a kind of anti-error optical connector plug, comprise plug casing, plug casing front end is inserted terminal, on plug, be fixed with plug circuit board, in plug circuit board, be fixed with the storage chip that stores plug information, in plug circuit board, be also fixed with by the inner cabling of plug circuit board and be electrically connected to the signal output pin of storage chip, and for the contact chip of the corresponding shell fragment conductive contact with on corresponding optical adapter, plug casing is provided with the circuit board warehouse for plug-in mounting plug circuit board, the rear end of circuit board warehouse has the rear Hatch Opening that the described plug circuit board of confession towards plug casing rear end pushes or extracts, the front end of circuit board warehouse has the front Hatch Opening stretching out forward towards the described plug circuit board of confession of plug casing front end, the front and back of the inherent plug casing of circuit board warehouse extend upward and are provided with surrounding sealing, the storehouse passage at the rear portion that holds plug circuit board that rear and front end communicates with front and back Hatch Opening respectively, being enclosed in plug circuit board conduit wall around for plug circuit board rear portion being constrained in circuit board warehouse of storehouse passage and with spacing cooperation of corresponding side surface at plug circuit board rear portion, front Hatch Opening place from circuit board warehouse on the side of plug casing offers the groove that holds described plug circuit board front portion, described contact chip is fixed on the plate face of described groove groove bottom dorsad of plug circuit board front portion, the notch of groove forms on plug casing surface the opening that exposes contact chip.
The front end of described groove is provided with the stopping surface that stops circuit board to move forward, stopping surface be simultaneously rear end than the inclined-plane of the more close groove notch of front end, the front end of described plug circuit board has the inclined-plane being pressed on inclined-plane, stopping surface place.
Described circuit board warehouse outside is integrated the projection being convexly set on plug casing side.
Described storage chip is fixed on the rear portion of plug circuit board and is convexly set on the plate face of plug circuit board one side, be provided with the back segment of the storehouse conduit wall of the corresponding circuit board warehouse in storage chip position the recess that holds storage chip, this recess extends back and forms outstanding notch in rear Hatch Opening edge, and what make rear Hatch Opening is shaped as " protruding " font.
On the plate face of described storage chip and contact chip the same side in plug circuit board.
The plug casing of optical connector plug of the present invention is provided with to be protected plug circuit board rear portion in inner circuit board storehouse in encirclement mode, thereby plug circuit board is directly installed on plug casing and does not need to install additional again other housings, realized optical connector plug (SC, LC) with the optical adapter (SC of the universal standard, LC) compatibility, realization is exchanged inserting, meet the demand that increases very easily chip functions simultaneously, in addition, the part that must expose except place, anterior contact chip place is exposed on the surface of plug casing, the remainder of plug circuit board can be effectively protected, thereby avoid impaired or come off by unexpected extracting in use at existing open groove assembly structure, and the mode of operation that pushes and pulls in circuit board storehouse makes the dismounting of plug circuit board also very convenient.
Accompanying drawing explanation
Fig. 1 is the stereographic map of optical connector plug embodiment of the present invention;
Fig. 2 is the three-dimensional exploded view that the optical connector plug of Fig. 1 does not pack plug circuit board into;
Fig. 3 is the three-dimensional exploded view that the optical connector plug at another visual angle does not pack plug circuit board into;
Fig. 4 is the perspective exploded view of Fig. 1.
Embodiment
As Figure 1-Figure 4, the embodiment of anti-error optical connector plug of the present invention, it is a kind of anti-mis-insertion SC optical connector plug, optical connector plug comprise rectangular shape plug casing 1 and from rear insertion plug casing 1 and with the fixing optical fiber contact pins assembly 9 of plug casing 1, plug casing 1 front end is inserted terminal, plug casing 1 front end is provided with the hole that exposes optical fiber contact pins 2, the two opposite side surfaces of plug casing is provided with locks friction tight buckling groove 4 while plugging together for the optical adapter with adaptive, another side of plug casing is provided with and groove in the optical adapter protruding key 8 that guiding coordinates when pegging graft, on the side of plug casing 1, be fixed with plug circuit board 7, in plug circuit board 7, be fixed with the storage chip 71 that stores plug information, in plug circuit board 7, be also fixed with by the inner cabling of plug circuit board 7 and be electrically connected to the signal output pin of storage chip 71, and for the contact chip 72 of the corresponding shell fragment conductive contact with on corresponding SC adapter.Above structure is identical with existing SC optical connector plug, its improvements are: on the side of plug casing 1, one is connected with the circuit board warehouse 5 for plug-in mounting plug circuit board 7, and described circuit board warehouse 5 is outside for being convexly set in a projection on plug casing 1 side.The rear end face of circuit board warehouse 5 has the rear Hatch Opening 51 that the described plug circuit board 7 of confession towards plug casing 1 rear end pushes or extracts, the front end face of circuit board warehouse 5 has the front Hatch Opening 52 stretching out forward towards the described plug circuit board 7 of confession of plug casing 1 front end, the front and back of the inherent plug casing 1 of circuit board warehouse 5 extend upward and are provided with surrounding sealing, the storehouse passage 53 at the rear portion that holds plug circuit board 7 that rear and front end communicates with front and back Hatch Opening respectively, the conduit wall of storehouse passage 53 for plug circuit board 7 rear portions being constrained in circuit board warehouse 5 and with spacing cooperation of corresponding side surface at plug circuit board 7 rear portions.Front Hatch Opening 52 places from circuit board warehouse 5 on the side of plug casing 1 offer forward the anterior groove 6 that holds described plug circuit board 7, described contact chip 72 is fixed on the plate face of described groove 6 groove bottom dorsad of plug circuit board 7 front portions, the notch of groove 6 forms on plug casing 1 surface the opening that exposes plug circuit board 7, the front end of groove 6 is provided with the stopping surface 61 that stops circuit board 7 to move forward, stopping surface 61 is that rear end is than the inclined-plane of more close groove 6 notches of front end, the front end of described plug circuit board 7 has the inclined-plane being pressed on stopping surface 61 inclined-planes, place, the two spacing cooperations in inclined-plane stop the front end of plug circuit board 7 to come off from inside to outside from groove 6.
Described storage chip 72 is fixed on the rear portion of plug circuit board 7, storage chip 72 is convexly set on the plate face of 7 plug circuit board 7 one sides, in the present embodiment, on the plate face of storage chip 71 and contact chip 72 the same side in 7 plug circuit board 7, certainly in other embodiments, both also can be on contrary plate face.Be provided with the back segment of the storehouse passage 53 of the storage chip 71 corresponding circuit board warehouses 5 in position the recess that holds storage chip 71, this recess extends back and forms outstanding notch 54 in rear Hatch Opening 51 edges, and what make rear Hatch Opening 51 is shaped as " protruding " font.
The embodiment of above-mentioned optical connector plug in use; plug circuit board 7 pushes in storehouse passage 53 from after hatch 51; rear portion with the plug circuit board 7 of storage chip 71 is protected in the storehouse passage 53 of surrounding sealing; and stretch out storehouse passage 53 with the plug circuit board 7 of contact chip 72, move forward into groove 6; and be exposed to plug casing 1 surface by the notch of groove 6; thereby make contact chip 72 can with the shell fragment conductive contact of LC adapter, realize the transmission of identification signal.
In the above-described embodiments, because plug casing wall thickness is thinner, therefore circuit board warehouse profile is the projection being convexly set on plug casing side, and in other embodiments of the invention, if the wall thickness of plug casing allows, circuit board storehouse can be also by being opened on a certain end face of plug casing and protuberance need not be set, and circuit board warehouse can be to be also fixed together by the side such as bonding, to rivet, be threaded with plug casing split setting, but not one.In addition, in the above-described embodiments, it is the position for the storage chip of the mated plug circuit board that coincide that the rear Hatch Opening 51 in circuit board storehouse is set as to " protruding " font, and can play the anti-inserted anti-mis-insertion effect of plate face that prevents plug circuit board, and in other embodiments of the invention, rear Hatch Opening also can simply be set to rectangular aperture.In addition, plug circuit board can, only by fixing with circuit board storehouse frictional fit or interference fit, now just need to not arrange stopping surface at groove 6 front ends.
In addition, circuit board warehouse is in the above-described embodiments arranged on the side that is provided with buckling groove 4 of plug casing, and in other embodiments of the invention, plug casing can be arranged on other any sides of plug casing, with the installation site of the plug circuit board of chip, be not limited to be contained in a certain surface of housing, each surface all can be installed, such as be provided with protruding key 8 side or with opposing side, protruding key 8 sides, place on.
In addition, although be a kind of SC plug at above-described embodiment, other embodiment of the present invention can be also the optical connector plugs with other kind of the mounting structure of respective slot on above-mentioned circuit board storehouse and plug casing, as LC plug.