CN102162882B - Optical fiber locker of micro-hole guide matching structure - Google Patents

Abstract

The invention discloses an optical fiber locker of a micro-hole guide matching structure, comprising an upper half piece (1) and a lower half piece (2). In the invention, the optical fiber locker is divided into the upper half piece and the lower half piece spliced into a cylindrical step-shaped body splicing structure; a central blind hole for precisely positioning and fixing a pin is arranged at the center of the front end of a locker end of the lower half piece (2); a central guide micro-hole for guiding the optical fiber to precisely enter the pin is arranged at the center of the bottom of the central blind hole; the optical fiber end is successfully inserted in the micro-hole of the pin through the guide of the central guide micro-hole; mould core extracting slide blocks for injection molding central blind hole and central guide micro-hole are short and thick through divided molding, so as to guarantee the technical scheme of the forming precision of the central blind hole. The optical fiber locker overcomes the disadvantages of high product reject ratio, low assembly efficiency and high cost of the products in the prior art, improves the product pass ratio, improves the assembly efficiency and lowers the cost through producing and using plastic pins.

Description

The optical fiber locker of symbol structure is closed in the micropore guiding

Technical field

The present invention relates to the optical fiber locking device in the fiber active linker, specifically refer in the fiber active linker plug, be used for precision positioning and connect contact pin, the contact pin micropore is inserted in the termination of guiding optical fiber, the optical fiber that is locked makes a kind of micropore guiding of optical-fibre precise centering link light path purposes close the optical fiber locker of symbol structure.

Background technology

Contact pin is the element that is used as optical-fibre precise centering in the fiber active linker plug, is provided with the right cylinder of a circular micropore centered by the contact pin, and the making material of contact pin has stainless steel, pottery, glass and plastics several; The code requirement of contact pin is high, and the precision of the offset of micropore has especially directly determined light scattering and the light decrement of light path link place; For example, the code requirement of full ceramic contact pin is as follows: external diameter Φ 2.499 ± 0.0005mm; External diameter out-of-roundness＜0.0005mm; Micro-pore diameter Φ 0.126mm ± 0.5 μ m; Micropore offset＜1 μ m; Micropore degree of depth 4mm or 10mm; Contact pin exterior circular column smooth finish

14; End face radius-of-curvature 20-60mm.Contact pin and optical fiber, and contact pin need be connected by the transition of optical fiber locker with the flexible jumper plug, therefore, except the precision of contact pin self, the precision of optical fiber locker has also determined light scattering and the light decrement of light path link place.

The optical fiber locker of prior art be plastics make by the front portion, the middle part, the perforation clamp device that rear portion three grades of step right cylinders one constitutes, consult Fig. 8, Fig. 9, the front end center of its anterior large cylinder step is provided with the blind hole of a location contact pin, the Geometrical Tolerance Principle of blind hole is identical with contact pin, and dimensional requirement and contact pin interference fit, the bottom of blind hole is provided with semicircular through hole and communicates with the plane of the semicylinder at middle part, the central axis on the plane of the semicylinder at middle part is provided with optical fiber and cooperates, radius is R0.063mm ± 0.25 μ m, central recess with the circular section of the offset＜1 μ m of blind hole axis, the top of central recess is provided with a jig arm, and the through hole that small cylinder step center, rear portion is provided with a guiding purposes communicates with the central recess on the semicylinder plane at middle part; During application, contact pin inserts in the blind hole fixing, optic fibre end passes the center bullport of rear portion small cylinder step, through the central recess on the semicylinder plane, middle part, the semi-circular through hole of passing anterior large cylinder step pierces in the micropore of contact pin, and optic fibre end is concordant with the outlet of contact pin micropore, with glue optic fibre end is fixed on the contact pin, simultaneously, be pressed in the central recess optical fiber fixing with tightening up cover by the jig arm that is located at semicylinder planar central groove top, middle part.

The formed precision of optical fiber locker has determined the positional precision of the contact pin that carries, the bearing accuracy of optical fiber locker then relies on the precision of the slide block of loosing core of the injection mold that makes it moulding, because the slide block of loosing core of moulding optical fiber locker must be taken into account above-mentioned central blind hole, semi-circular through hole, central recess, the moulding of jig arm is loosed core, the body of slide block is extremely tiny and long so loose core, during injection mo(u)lding, under the effect that the plastic liquid of fusion impacts, easily be offset, cause the bearing accuracy of optical fiber locker to be affected, finally cause the optic fibre end offset to exceed standard, the fraction defective height of optical fiber locker goods during large-scale production; In addition, when using assembling, superfine optic fibre end need pass through the center bullport at above-mentioned optical fiber locker rear portion and enter the micropore of contact pin through the central recess at middle part, anterior semi-circular through hole, so wear the optical fiber inconvenience, make efficiency of assembling low, labour cost occupies high; Therefore, prior art exists goods fraction defective height, efficiency of assembling is low, cost is high problems and shortcomings.

Summary of the invention

Problems and shortcomings at above-mentioned prior art existence, the present invention adopts serve as reasons first slit bamboo or chopped wood, second slit bamboo or chopped wood two and half slit bamboo or chopped wood cylinder step body amalgamations of optical fiber locker branch is closed the symbol structure, the locker termination integral body that determines contact pin offset index is arranged on the front portion of second slit bamboo or chopped wood, be connected as a single entity with the middle part of second slit bamboo or chopped wood and the half slit bamboo or chopped wood cylinder step body at rear portion, be provided for the central blind hole of precision positioning fixing plug pin at the front end center of locker termination, pierce into the center guiding micropore of contact pin in bottom centre's setting of central blind hole in order to the precision that guides optical fiber; During application, fixing in the central blind hole of contact pin interference insertion locker termination, first slit bamboo or chopped wood links together with the corresponding amalgamation of second slit bamboo or chopped wood, optical fiber pierces into from the guide line hole that the corresponding amalgamation with second slit bamboo or chopped wood of first slit bamboo or chopped wood forms, and the micropore glue that inserts the contact pin that is arranged in locker termination central blind hole through the center of centerline hole and second slit bamboo or chopped wood guiding micropore is solid; Utilize the guiding of center guiding micropore, make things convenient for optic fibre end to insert the micropore of contact pin, the weak point that the slide block of loosing core that utilization divides the slit bamboo or chopped wood moulding to make moulding central blind hole and center guiding micropore can be done and sturdy, the impact of the molten stream of plastics during with the opposing injection mo(u)lding, guarantee the technical scheme of central blind hole formed precision, provide a kind of micropore guiding to close the optical fiber locker of symbol structure, be intended to close the symbol structure by guiding micropore and amalgamation and make the production of plastic connector pin and application reach the purpose that improves job efficiency, improves efficiency of assembling, reduces cost.

The object of the present invention is achieved like this: the optical fiber locker of symbol structure is closed in a kind of micropore guiding, comprise first slit bamboo or chopped wood, second slit bamboo or chopped wood, wherein: described second slit bamboo or chopped wood is that the three grades of step right cylinders in diameter front portion, middle part, rear portion from large to small constitute, wherein, the step right cylinder at middle part and rear portion is cut the plastic member that is half slit bamboo or chopped wood cylinder step body open along central axis; The step right cylinder of second slit bamboo or chopped wood front portion is called the locker termination, the front end center of described locker termination is provided with the central blind hole with the contact pin interference fit, bottom centre at central blind hole is provided with the through hole that is slidingly matched with fiber radius, be called center guiding micropore, penetrate contact pin smoothly in order to guide optical-fibre precise centering; On the plane of the middle part half slit bamboo or chopped wood cylinder step body of second slit bamboo or chopped wood, along central axis, be provided with fiber radius be slidingly matched, center wire casing that groove that the cross section is circular arc constitutes, it is the guiding wire casing of the groove formation of circular arc that the back facial planes of second slit bamboo or chopped wood is provided with greater than fiber radius, cross section, the rear end of the center wire casing of second slit bamboo or chopped wood links to each other with the guiding wire casing of second slit bamboo or chopped wood, and the front end of the center wire casing of second slit bamboo or chopped wood links to each other with described center guiding micropore;

Described first slit bamboo or chopped wood is the plastic member of the secondary half slit bamboo or chopped wood cylinder step body that is made of front and rear; The front and rear of first slit bamboo or chopped wood is corresponding identical with back step half slit bamboo or chopped wood cylinder step body with the middle part of described second slit bamboo or chopped wood, the position, joint portion of the front and rear on first slit bamboo or chopped wood plane, be provided with one that be connected as a single entity with first slit bamboo or chopped wood, be used for cooperating the rear portion half slit bamboo or chopped wood cylinder step body of second slit bamboo or chopped wood to slide through, outside rounded, inner is the pipe box of semi-circular through hole formation; On the plane of the front portion half slit bamboo or chopped wood cylinder step body of first slit bamboo or chopped wood, along central axis, be provided with and the corresponding identical center wire casing of described second slit bamboo or chopped wood, the back facial planes of first slit bamboo or chopped wood is provided with and the corresponding identical guiding wire casing of described second slit bamboo or chopped wood, and the rear end of the center wire casing of first slit bamboo or chopped wood links to each other with the guiding wire casing of first slit bamboo or chopped wood;

Close symbol and connect, the half slit bamboo or chopped wood cylinder step body at second slit bamboo or chopped wood rear portion passes the pipe box of first slit bamboo or chopped wood, and first slit bamboo or chopped wood is linked together with the corresponding amalgamation of second slit bamboo or chopped wood; First slit bamboo or chopped wood forms full circle and continuous centerline hole and guide line hole with second slit bamboo or chopped wood center wire casing separately with after guiding the corresponding amalgamation of wire casing;

During application, fixing in the central blind hole of contact pin interference insertion locker termination, first slit bamboo or chopped wood links together with the corresponding amalgamation of second slit bamboo or chopped wood, optic fibre end pierces into from the guide line hole that the corresponding amalgamation with second slit bamboo or chopped wood of first slit bamboo or chopped wood forms, penetrate the micropore of the contact pin that is arranged in locker termination central blind hole through the center of centerline hole and second slit bamboo or chopped wood guiding micropore, optic fibre end is concordant with the outlet of contact pin micropore, and glue is solid.

Structural principle

During assembling, fixing in the central blind hole of contact pin interference insertion locker termination, optic fibre end pierces into the guide line hole of the corresponding amalgamation of second slit bamboo or chopped wood from first slit bamboo or chopped wood, and the micropore glue that inserts the contact pin that is arranged in locker termination central blind hole through the center of centerline hole and second slit bamboo or chopped wood guiding micropore is solid; Utilize the guiding of center guiding micropore, make things convenient for optic fibre end to insert the micropore of contact pin, the weak point that the slide block of loosing core that utilization divides the slit bamboo or chopped wood moulding to make moulding central blind hole and center guiding micropore can be done and sturdy, the impact of the molten stream of plastics during with the opposing injection mo(u)lding, guarantee the formed precision of central blind hole, guaranteed the bearing accuracy of the position of contact pin then.

Above-mentioned, the present invention adopts serve as reasons first slit bamboo or chopped wood, second slit bamboo or chopped wood two and half slit bamboo or chopped wood cylinder step body amalgamations of optical fiber locker branch is closed the symbol structure, the locker termination integral body that determines contact pin offset index is arranged on the front portion of second slit bamboo or chopped wood, be connected as a single entity with the middle part of second slit bamboo or chopped wood and the half slit bamboo or chopped wood cylinder step body at rear portion, be provided for the central blind hole of precision positioning fixing plug pin at the front end center of locker termination, pierce into the center guiding micropore of contact pin in bottom centre's setting of central blind hole in order to the precision that guides optical fiber; During application, fixing in the central blind hole of contact pin interference insertion locker termination, first slit bamboo or chopped wood links together with the corresponding amalgamation of second slit bamboo or chopped wood, optical fiber pierces into from the guide line hole that the corresponding amalgamation with second slit bamboo or chopped wood of first slit bamboo or chopped wood forms, and the micropore glue that inserts the contact pin that is arranged in locker termination central blind hole through the center of centerline hole and second slit bamboo or chopped wood guiding micropore is solid; Utilize the guiding of center guiding micropore, make things convenient for optic fibre end to insert the micropore of contact pin smoothly, the weak point that the slide block of loosing core that utilization divides the slit bamboo or chopped wood moulding to make moulding central blind hole and center guiding micropore can be done and sturdy, the impact of the molten stream of plastics during with the opposing injection mo(u)lding, guarantee the technical scheme of central blind hole formed precision, overcome prior art and had goods fraction defective height, efficiency of assembling is low, the problems and shortcomings that cost is high, the optical fiber locker of symbol structure is closed in a kind of micropore guiding that provides, production and the application that the symbol structure makes plastic connector pin of closing by guiding micropore and amalgamation reached the raising job efficiency, improve efficiency of assembling, the purpose that reduces cost.

Description of drawings

Fig. 1 is the structure cross-sectional schematic that the optical fiber locker of symbol structure is closed in a kind of micropore guiding of the present invention;

Fig. 2 is that the axis of homology that the optical fiber locker of symbol structure is closed in a kind of micropore guiding of the present invention is surveyed synoptic diagram;

Fig. 3 is that the axle that second slit bamboo or chopped wood parts of the optical fiber locker that accords with structure are closed in a kind of micropore guiding of the present invention is surveyed synoptic diagram;

Fig. 4 is that the axle that first slit bamboo or chopped wood parts of the optical fiber locker that accords with structure are closed in a kind of micropore guiding of the present invention is surveyed synoptic diagram;

Fig. 5 is the upward view of Fig. 3;

Fig. 6 is the upward view of Fig. 4;

Fig. 7 is that the optical fiber locker of symbol structure is closed in a kind of micropore guiding of the present invention, is in the cross-sectional schematic of position in the fiber active linker plug during application;

Fig. 8 is the structure cross-sectional schematic of prior art plastic connector pin;

Fig. 9 is that the axle of Fig. 8 is surveyed synoptic diagram.

Be described in further detail below in conjunction with the present invention of the embodiment in the accompanying drawing, but should not be construed as any limitation of the invention.

Among the figure: first slit bamboo or choppedwood 1,pipe box 11, second slit bamboo or choppedwood 2,locker termination 21,center guiding micropore 22, centralblind hole 23,center wire casing 3, guidingwire casing 4,contact pin 01.

Embodiment

Consult Fig. 1～Fig. 7, the optical fiber locker of symbol structure is closed in a kind of micropore guiding of the present invention, comprise first slit bamboo or choppedwood 1, second slit bamboo or choppedwood 2, wherein: described second slit bamboo or choppedwood 2 is that the three grades of step right cylinders in diameter front portion, middle part, rear portion from large to small constitute, wherein, the step right cylinder at middle part and rear portion is cut the plastic member that is half slit bamboo or chopped wood cylinder step body open along central axis; The step right cylinder of second slit bamboo or choppedwood 2 front portions is calledlocker termination 21, the front end center of describedlocker termination 21 is provided with the centralblind hole 23 withcontact pin 01 interference fit, bottom centre at centralblind hole 23 is provided with the through hole that is slidingly matched with fiber radius, be calledcenter guiding micropore 22, penetratecontact pin 01 smoothly in order to guide optical-fibre precise centering; On the plane of the middle part half slit bamboo or chopped wood cylinder step body of second slit bamboo or choppedwood 2, along central axis, be provided with fiber radius be slidingly matched,center wire casing 3 that groove that the cross section is circular arc constitutes, it is the guidingwire casing 4 of the groove formation of circular arc that the back facial planes of second slit bamboo or choppedwood 2 is provided with greater than fiber radius, cross section, the rear end of thecenter wire casing 3 of second slit bamboo or choppedwood 2 links to each other with the guidingwire casing 4 of second slit bamboo or choppedwood 2, and the front end of thecenter wire casing 3 of second slit bamboo or choppedwood 2 links to each other with describedcenter guiding micropore 22;

Described first slit bamboo or choppedwood 1 is the plastic member of the secondary half slit bamboo or chopped wood cylinder step body that is made of front and rear; The front and rear of first slit bamboo or choppedwood 1 is corresponding identical with back step half slit bamboo or chopped wood cylinder step body with the middle part of described second slit bamboo or choppedwood 2, the position, joint portion of the front and rear on first slit bamboo or choppedwood 1 plane, be provided with one 1 that be connected as a single entity with first slit bamboo or chopped wood, be used for cooperating the rear portion half slit bamboo or chopped wood cylinder step body of second slit bamboo or choppedwood 2 to slide through, outside rounded, inner is thepipe box 11 of semi-circular through hole formation; On the plane of the front portion half slit bamboo or chopped wood cylinder step body of first slit bamboo or choppedwood 1, along central axis, be provided with and described second slit bamboo or choppedwood 2 corresponding identicalcenter wire casings 3, the back facial planes of first slit bamboo or choppedwood 1 is provided with and described second slit bamboo or choppedwood 2 corresponding identical guidingwire casings 4, and the rear end of thecenter wire casing 3 of first slit bamboo or choppedwood 1 links to each other with the guidingwire casing 4 of first slit bamboo or choppedwood 1;

Close symbol and connect, the half slit bamboo or chopped wood cylinder step body at second slit bamboo or choppedwood 2 rear portions passes thepipe box 11 of first slit bamboo or choppedwood 1, and first slit bamboo or choppedwood 1 is linked together with second slit bamboo or choppedwood 2 corresponding amalgamations; Behind first slit bamboo or choppedwood 1 and second slit bamboo or choppedwood 2center wire casing 3 and the 4 corresponding amalgamations of guiding wire casing separately, form full circle and continuous centerline hole and guide line hole;

During application, fixing in the centralblind hole 23 ofcontact pin 01 interferenceinsertion locker termination 21, first slit bamboo or choppedwood 1 links together with second slit bamboo or choppedwood 2 corresponding amalgamations, optic fibre end pierces into the guide line hole that second slit bamboo or choppedwood 2 corresponding amalgamations form from first slit bamboo or choppedwood 1, penetrate the micropore of thecontact pin 01 that is arranged inlocker termination 21 centralblind holes 23 through the center of centerline hole and second slit bamboo or choppedwood 2 guidingmicropore 22, optic fibre end is concordant with the outlet ofcontact pin 01 micropore, and glue is solid.

Structural principle

During assembling, fixing in the centralblind hole 23 ofcontact pin 01 interferenceinsertion locker termination 21, optic fibre end pierces into the guide line hole of second slit bamboo or choppedwood 2 corresponding amalgamations from first slit bamboo or choppedwood 1, and the micropore glue that inserts thecontact pin 01 that is arranged inlocker termination 21 centralblind holes 23 through the center of centerline hole and second slit bamboo or choppedwood 2 guidingmicropore 22 is solid; Utilize the guiding ofcenter guiding micropore 22, make things convenient for optic fibre end to insert the micropore ofcontact pin 01, the weak point that the slide block of loosing core that utilization divides the slit bamboo or chopped wood moulding to make moulding centralblind hole 23 andcenter guiding micropore 22 can be done and sturdy, the impact of the molten stream of plastics during with the opposing injection mo(u)lding, guarantee the formed precision of centralblind hole 23, guaranteed the bearing accuracy of the position of contact pin then.

Claims (1)

1. the optical fiber locker of symbol structure is closed in a micropore guiding, it is characterized in that: comprise first slit bamboo or chopped wood (1), second slit bamboo or chopped wood (2), described second slit bamboo or chopped wood (2) is that the three grades of step right cylinders in diameter front portion, middle part, rear portion from large to small constitute, wherein, the step right cylinder at middle part and rear portion is cut the plastic member that is half slit bamboo or chopped wood cylinder step body open along central axis; The anterior step right cylinder of second slit bamboo or chopped wood (2) is called locker termination (21), the front end center of described locker termination (21) is provided with the central blind hole (23) with contact pin (01) interference fit, bottom centre at central blind hole (23) is provided with the through hole that is slidingly matched with fiber radius, be called center guiding micropore (22), penetrate contact pin (01) smoothly in order to guide optical-fibre precise centering; On the plane of the middle part half slit bamboo or chopped wood cylinder step body of second slit bamboo or chopped wood (2), along central axis, be provided with fiber radius be slidingly matched, center wire casing (3) that groove that the cross section is circular arc constitutes, it is the guiding wire casing (4) of the groove formation of circular arc that the back facial planes of second slit bamboo or chopped wood (2) is provided with greater than fiber radius, cross section, the rear end of the center wire casing (3) of second slit bamboo or chopped wood (2) links to each other with the guiding wire casing (4) of second slit bamboo or chopped wood (2), and the front end of the center wire casing (3) of second slit bamboo or chopped wood (2) links to each other with described center guiding micropore (22);

Described first slit bamboo or chopped wood (1) is the plastic member of the secondary half slit bamboo or chopped wood cylinder step body that is made of front and rear; The front and rear of first slit bamboo or chopped wood (1) is corresponding identical with back step half slit bamboo or chopped wood cylinder step body with the middle part of described second slit bamboo or chopped wood (2), the position, joint portion of the front and rear on first slit bamboo or chopped wood (1) plane, be provided with one that be connected as a single entity with first slit bamboo or chopped wood (1), be used for cooperating the rear portion half slit bamboo or chopped wood cylinder step body of second slit bamboo or chopped wood (2) to slide through, outside rounded, inner is the pipe box (11) of semi-circular through hole formation; On the plane of the front portion half slit bamboo or chopped wood cylinder step body of first slit bamboo or chopped wood (1), along central axis, be provided with and the corresponding identical center wire casing (3) of described second slit bamboo or chopped wood (2), the back facial planes of first slit bamboo or chopped wood (1) is provided with and the corresponding identical guiding wire casing (4) of described second slit bamboo or chopped wood (2), and the rear end of the center wire casing 3 of first slit bamboo or chopped wood (1) links to each other with the guiding wire casing (4) of first slit bamboo or chopped wood (1);

Close symbol and connect, the half slit bamboo or chopped wood cylinder step body at second slit bamboo or chopped wood (2) rear portion passes the pipe box (11) of first slit bamboo or chopped wood (1), and first slit bamboo or chopped wood (1) is linked together with the corresponding amalgamation of second slit bamboo or chopped wood (2); Form full circle and the centerline hole that links to each other and guide line hole after first slit bamboo or chopped wood (1) and second slit bamboo or chopped wood (2) center wire casing (3) separately and the corresponding amalgamation of guiding wire casing (4).

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