CN101833145A - Box-building type optical fiber splicing unit capable of being repeatedly opened and used - Google Patents

Abstract

The invention discloses a box-building type optical fiber splicing unit capable of being repeatedly opened and used, comprising a front-mounted box assembly used for fixing an optical fiber and a rear-mounted box assembly used for fixing the optical cable coating of the optical fiber, wherein and the front-mounted box assembly and the rear-mounted box assembly are fixedly connected; the front-mounted box assembly comprises a shell, a building cover, a front-mounted box, a V-slot metal block, a lock pin and a guide block, and the building cover is arranged on the shell; the front-mounted box, the V-slot metal block, the lock pin and the guide block are arranged in the shell; the box is provided with floating ribs and building slots; the building cover comprises building arms and building bodies; the building bodies and the building slots fit; the shell is also provided with an opening cover; the opening cover and the building cover are relatively arranged; the opening cover comprises at least one top plate; and the top plate can act on the building arms of the building cover and open the building cover. The optical fiber splicing unit has simple and reliable splicing structure, short site operating time and low overall manufacture cost and greatly reduces the terminating difficulty of optical fiber splicing.

Description

A kind of case is built formula can repeat to open the optical fiber connector of use

Technical field

The present invention relates to a kind of coupling arrangement that optical fiber is installed that is used for, in handshaking procedure, adopt case to build mode pressed fiber and crust, and can repeat to open and use, be specifically related to preset optical fiber or the non-optical fiber connector that presets two kinds of continuation methods of optical fiber.

Background technology

At present, the Quick Connect Kit product that is used for repeating opening use mainly adopts dual mode fixed fiber and crust respectively.

Fixing of optical fiber: a kind of is to realize fiber alignment Cheng Duan's by two optic fibre ends of sheet metal secured in alignment that compress doubling; Another kind is to realize fiber alignment Cheng Duan's by compressing involutory unit of plastic fixed fiber.Wherein, in the sheet metal of doubling or involutory unit of plastic, establish the V-type groove that is used for fiber alignment; Optic fibre end link position at the V-type groove splashes into fluent meterial to improve the translucidus of splicing point; Thereby the action of hold down gag be by sheet metal that presses down doubling or involutory unit of plastic reduce V-type line of rabbet joint crack compress aim at optical fiber realize two optical fiber to being connected into end.

Crust fixing: a kind of is to realize that by the solid fixture block that fastening is installed in the crust termination another kind is by threaded tapered sleeve locking cone pawl, and the contraction by the awl pawl is fixing crust directly.

In optical fiber fixing, expanding with heat and contract with cold of sheet metal can make the increasing of fibre junction point distance in the sheet metal secured in alignment mechanism, and the performance that continues varies with temperature and changes; And the involutory optical-fibre channel of unit of plastic is normally closed often, at first need back down briquetting when optical fiber penetrates, but the frosting smoothness is low, backs down easy damaged V-type rooved face in the process, produce the plastics chip, pollute splicing point, the logical light of influence causes connecting quality to descend, and the middle fluent meterial that the raising translucidus is arranged of involutory plastics, its spinoff is that two surfaces are pulled together, and the power of backing down that optical fiber is worn the people increases greatly, causes the difficulty that finally continues.

Waste time and energy when in crust fixing the crust termination being installed, and the termination part is little, manufacture difficulty is big, cost is high, and is easy to lose in construction; And the contraction of awl pawl need screw tapered sleeve, screws that the optical cable crust slides easily in the process, influence success ratio, and the running time is long.

Summary of the invention

Technical matters to be solved by this invention is at above-mentioned the deficiencies in the prior art, can repeat to open the optical fiber connector of use and provide a kind of case to build formula, realize optical fibre rapid connection become end reliable fast, repeat to open convenient, time saving and energy saving, simplify the numerous and diverse degree of optical fiber construction work, improve the success ratio of the cold connection of optical fiber, reduce use cost.

For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of case is built formula can repeat to open the optical fiber connector of use, comprise preposition casing assembly that is used for fixing optical fiber and the rearmounted casing assembly that is used for fixing the optical fiber cable crust, described preposition casing assembly is fixedlyed connected with rearmounted casing assembly, described preposition casing assembly comprises housing, build lid, preposition casing, V-type groove derby, lock pin and orienting lug, described block lid is arranged on the housing, described preposition casing, V-type groove derby, lock pin and orienting lug are arranged in the housing, described casing is provided with and floats muscle and build groove, described block lid comprises builds arm and masonry, described masonry and described block groove are suitable, it is characterized in that: on described housing, also be provided with one and open lid, this unlatching lid is oppositely arranged with described block lid, open lid and comprise that at least one top board, this top board can act on the block arm of described block lid and open described block lid.

Optical fiber connector of the present invention comprises preposition casing assembly, rearmounted casing assembly, spring and unlatching lid, and described preposition casing assembly comprises housing, preposition casing, builds lid, V-type groove derby, lock pin and orienting lug; Be provided with slider pad at described preposition casing middle part, be respectively caulking groove in the both sides of this slider pad and build groove; Described V-type groove derby is embedded in the caulking groove, is provided with the V-type groove with the slider pad opposite face, and forms the optical fiber through hole with it; Described block lid is built the masonry that covers a side and is pressed in the block groove of preposition casing attached on the preposition casing, thereby compresses butt joint optical fiber or the field optical fibers that is placed on wherein by building the space of pressing slider pad to reduce the optical fiber through hole; Be respectively arranged with preceding connection chamber, back connection chamber in described preposition tank ends, preceding connection chamber is connected with lock pin, and back connection chamber is connected with orienting lug; Described rearmounted casing assembly comprises rearmounted casing, case lid, is provided with a pair of lever arm and decides groove in described rearmounted casing, and both sides also have a pair of protruding axle and Ka Tai respectively, and the inboard opposite face of lever arm is provided with pawl; Have in described case lid inside and decide the corresponding building block of groove, there are axis hole and hole clipping and rearmounted casing protruding and Ka Tai in both sides by closing; Case lid by the protruding axle on axis hole and the rearmounted casing by closing, and be that rotate at the center with protruding axle, during with rearmounted casing pressing, the building block of case lid inside is pressed into decides groove, promoting lever arm simultaneously inwardly shrinks, pawl on the lever arm embeds the optical cable crust, and the Ka Tai of rearmounted casing and the hole clipping on the case lid be by closing, thus fixing optical cable; Preposition casing assembly and rearmounted casing assembly are movably connected, and spring is pressed into wherein, open lid and also can pull down below housing.

Described housing upper surface is established groove, builds lid and protrudes from the groove; Lower surface is established opening groove corresponding to the block arm position of building lid; The housing tail end is also established two big hole clippings and big guide groove, is connected with big grab on the rearmounted casing.

Be provided with slider pad in the described preposition casing, slider pad links to each other by the muscle that floats with preposition casing, slider pad is also established guiding surface and is matched with the chamfering of masonry, and masonry imports by guiding surface and the promotion slider pad during enforcement, thereby realizes that two butt joint optical fiber compress; Establish the fine face of leading behind the described preposition casing in the connection chamber, little hole clipping and little guide groove are also established in back connection chamber both sides, are connected with orienting lug lesser calorie hook, and described front tank body side surface is established Ka Tai, and the draw-in groove that covers with block fastens.

Described V-type groove derby and slider pad surface in opposite directions are provided with the V-type groove, form described optical fiber through hole between this V-type groove and the slider pad; The two ends of described V-type groove derby V-type groove are provided with spigot surface.

Described block covers to be established masonry and builds arm; Masonry is provided with chamfering; Build arm and be provided with draw-in groove.

Establish the lock pin hole in the described lock pin, a pre-buried fiber segment can be annotated by glue in the lock pin hole, and lock pin hole front end is a pommel face, and optical fiber guiding taper hole is established in the rear end.

Establish fibre-guiding hole in the described orienting lug and cross fine hole, the orienting lug front end is provided with little seam and little grab, and the spring locating surface is established in the orienting lug rear end, and spring compression and is looped around on the guiding block on the spring locating surface.

The front end of described rearmounted casing is established big seam, spring-advance face and a pair of big grab, and spring is pressed on the spring-advance face, and big seam is connected with housing, and big grab is connected with the big hole clipping of housing; In the described rearmounted casing wired retaining is set also, is provided with logical wire casing in the line retaining.

Also be provided with line ball platform and crust groove on the described case lid, the line ball platform is pressed on the optical cable crust in the rearmounted casing.

Described unlatching interior surface is established a top board, and corresponding to the unlatching groove of housing lower surface, the position that lid presses down is built in the height of top board location; Described unlatching lid is established biside plate and housing by closing; Described unlatching lid front end is established all-or-nothing piece and rearmounted casing guide edge coupling.

Described preposition casing and orienting lug flexibly connect.

Described housing and rearmounted casing flexibly connect.

Optical fiber connector of the present invention, the center line that fine hole of mistake between V-type groove and the slider pad on the described optical fiber through hole of formation, lock pin hole, the orienting lug and two lever arms form is on same axis.

Compared with prior art, the present invention has the following advantages:

1, compressing of two butt joint optical fiber of the present invention is to be pressed into the block groove by building lid, promotes slider pad and is squeezed in that jointed fiber in the V-type groove realizes compressing, and be easy to realize integrally-built microminiaturization, and clamping force is big, reliable.Be provided with on housing simultaneously and open lid, open the block lid by opening caping, realize fast, repeat to open, unlatching is convenient, time saving and energy saving, simplifies the numerous and diverse degree of optical fiber construction work, improves the success ratio of the cold connection of optical fiber, reduces use cost.

2, optical fiber connector of the present invention adopts floated slider pad, (when wearing fibre) slider pad is a stationary state during non-operation, and be embedded in and form an optical-fibre channel of opening between the V-type groove derby in the preposition casing, wearing does not need to back down earlier briquetting when fibre enters the V-type groove, wear fibre like this and reduce greatly.

3, optical fiber connector of the present invention adopts V-type groove derby, and V-type groove and optical fiber spigot surface are the metal material surface, and the smoothness height imports smooth and easyly when wearing fibre, and the high-precision metal surface is easy damaged not, thereby has improved connecting quality.Wear fine optical fiber and slide in smooth metal surface, optical fiber junction is difficult for injured, can not produce broken end, pollute matching fluid, repeatedly repeats to continue stable performance.

4, optical fiber of the present invention compresses, though V-type groove derby is a metal, but floated slider pad is plastics, thermal expansion factor is little, the frosting roughness can be adjacent at frosting when optical fiber is depressed greater than metal, is that the slider pad of stationary state can not produce mobile and wear fine direction, so structure is not subject to temperature variation, material aging and influences connecting quality, long service life.

Distortion when 5, the present invention compresses is even, guarantees that two butt joint optical fiber obtain equal snap-in force, realize reliably butt joint.

6, optical cable crust of the present invention fixedly is that building block by case lid inside is pressed into and decides groove, promoting lever arm inwardly shrinks, the pawl of its inboard opposite face embeds the optical fiber crust, big hole clipping by big grab and housing locks again, thereby fixing optical cable, this fixed sturcture is solid and reliable, operates easyly rapidly, reduces construction intensity greatly.

7, open lid and be attached to below the housing, need not to use special-purpose tool for connecting, with low cost, operation easier is low, the success ratio height.

8, optical fiber connector optical cable crust of the present invention is fixed on the connector of housing and rearmounted casing assembly, when the optical cable tension, spring in the connector guarantees to paste before insertion core end face firmly all the time, guarantee that fiber-optic signal is not interrupted by external force, connector in particular for covered wire cable, at present, also still product-free adopt this mode to design.

Description of drawings

Fig. 1 is an optical fiber connector 3D cut-away view of the present invention.

Fig. 2 is an optical fiber connector 3D stretch-out view of the present invention.

Fig. 3 is a housing 3D synoptic diagram of the present invention.

Fig. 4 is the preposition casing 3D of a present invention synoptic diagram.

Fig. 5 covers the 3D synoptic diagram for the present invention builds.

Fig. 6 is V-type groove derby 3D synoptic diagram of the present invention.

Fig. 7 is a lock pin 3D synoptic diagram of the present invention.

Fig. 8 is an orienting lug 3D synoptic diagram of the present invention.

Fig. 9 is the rearmounted casing 3D of a present invention synoptic diagram, and wherein a is the 3D top view, and b is a view under the 3D.

Figure 10 is a case lid 3D synoptic diagram of the present invention, and wherein a is the 3D outside drawing, and b is the 3D cut-open view.

Figure 11 the present invention opens covers the 3D synoptic diagram.

Figure 12 fibre junction sub-optical fibre of the present invention compresses initial state and operating conditions 3D cut-away view., wherein a is an initial state 3D cut-open view, b is an operating conditions 3D cut-open view.

Among the figure: 1. housing, 2. preposition casing is 3. built lid, 4.V type groove derby, 5 lock pins, 6. orienting lug, 7. spring, 8. rearmounted casing, 9. case lid is 10. opened lid, 11. preposition casing assemblies, 12. rearmounted casing assembly, 1-1. enclosure body, 1-2. groove, 1-3. opening groove, the big hole clipping of 1-4., the big guide groove of 1-5., 2-1. caulking groove, 2-2. slider pad, 2-3. guiding surface, the muscle 2-4. float, 2-5. builds groove, and 2-6. leads fine face, 2-7. preceding connection chamber, connection chamber behind the 2-8., the little hole clipping of 2-9., 2-10. little guide groove, 2-11. Ka Tai, 3-1. builds arm, 3-2. chamfering, 3-3. masonry, 3-4. draw-in groove, 4-1.V the type groove, 4-2. spigot surface, 4-3. optical fiber through hole, 5-1. the pommel face, 5-2. lock pin hole, the 5-3. taper hole that leads, 6-1. the guiding block, 6-2. fibre-guiding hole, 6-3. are crossed fine hole, 6-4. little seam, the little grab of 6-5., 6-6. spring locating surface, 8-1. big seam, the big grab of 8-2., 8-3. lever arm, 8-4. pawl, 8-5. decides groove, the protruding axle of 8-6., 8-7. Ka Tai, 8-8. guide edge, 8-9. spring-advance face, 8-10. the line retaining, 8-11. leads to wire casing, the 9-1. axis hole, 9-2. building block, 9-3. hole clipping, 9-4. crust groove 9-5. line ball platform, 10-1. top board, 10-2. side plate, 10-3. all-or-nothing piece.

Embodiment

Below in conjunction with accompanying drawing, the present invention is elaborated.

Shown in Fig. 1,2,4,5,6,9,10,12, comprise preposition casing assembly 11, rearmounted casing assembly 12, spring 7 and open and cover 10 that described preposition casing assembly 11 comprises that housing 1, preposition casing 2, block cover 3, V-type groove derby 4, lock pin 5 and orienting lug 6; Be provided with slider pad 2-2 at described preposition casing 2 middle parts, be respectively the 2-1 caulking groove in the both sides of this slider pad 2-2 and build groove 2-5; Described V-type groove derby 4 is embedded among the caulking groove 2-1, is provided with V-type groove 4-1 with the slider pad opposite face, and forms optical fiber through hole 4-3 with it; Described block lid 3 is built the masonry 3-3 that covers 3 one sides and is pressed among the block groove 2-5 of preposition casing 2 attached on the preposition casing 2, thereby compresses butt joint optical fiber or the field optical fibers that is placed on wherein by building the space of pressing slider pad 2-2 to reduce optical fiber through hole 4-3; Connection chamber 2-7, back connection chamber 2-8 before described preposition casing 2 two ends are respectively arranged with, preceding connection chamber 2-7 is connected with lock pin 5, and back connection chamber 2-8 is connected with orienting lug 6; Described rearmounted casing assembly 12 comprises rearmounted casing 8, case lid 9, casing 8 and case lid 9 can adopt the end in the present embodiment to be rotationally connected, the mode that one end fastens, also can conventional two ends all fastening the mode of pushing connects, one end is rotationally connected, the mode that one end is pushed fastening is as follows: be provided with a pair of lever arm 8-3 and decide groove 8-5 in described rearmounted casing 8, both sides also have a pair of protruding axle 8-6 and Ka Tai 8-7 respectively, and the inboard opposite face of lever arm 8-3 is provided with pawl 8-4; Have in described case lid 9 inside and decide the corresponding building block 9-2 of groove 8-5, there are protruding 8-6 of axis hole 9-1 and hole clipping 9-3 and rearmounted casing 8 and Ka Tai 8-7 in both sides by closing; Case lid 9 by the protruding axle 8-6 on axis hole 9-1 and the rearmounted casing 8 by closing, and be that rotate at the center with protruding axle 8-6, during with rearmounted casing 8 pressings, the building block 9-2 of case lid 9 inside is pressed into and decides groove 8-5, promoting lever arm 8-3 simultaneously inwardly shrinks, pawl 8-4 on the lever arm 8-3 embeds the optical cable crust, and the card platform 8-7 of rearmounted casing 8 and the hole clipping 9-3 on the case lid 9 be by closing, thus fixing optical cable; Preposition casing assembly 11 is movably connected with rearmounted casing assembly 12, and spring 7 is pressed into wherein; Open and cover 10 and below housing 1, also can pull down.

As shown in Figure 3, describedhousing 1 upper surface is established groove 1-2, and block covers 4 and protrudes from the groove 1-2; Lower surface covers 3 block arm 3-1 position and establishes opening groove 1-3 corresponding to building;Housing 1 tail end is also established two big hole clipping 1-4 and big guide groove 1-5, is connected with big grab 8-2 on therearmounted casing 8.

As shown in Figure 4, be provided with slider pad 2-2 in the describedpreposition casing 2, slider pad 2-2 links to each other by the muscle 2-4 that floats withpreposition casing 2, slider pad 2-2 also establishes guiding surface 2-3 and matches with the chamfering 3-2 of masonry 3-3, masonry 3-3 imports by guiding surface 2-3 and promotes slider pad 2-2 during enforcement, thereby realizes that two butt joint optical fiber compress or single field optical fibers compresses; Establish among the describedpreposition casing 2 back connection chamber 2-8 and lead fine face 2-6, back connection chamber 2-8 also establishes both sides lesser calorie hole 2-9 and little guide groove 2-10, and 6 lesser calorie hook 6-5 are connected with orienting lug, and card platform 2-11 is established in described preposition casing 2 sides, and the draw-in groove 3-4 that covers on 3 with block fastens.

As shown in Figure 5, described V-type groove derby 4 is provided with V-type groove 4-1 with slider pad 2-2 surface in opposite directions, forms described optical fiber through hole 4-3 between this V-type groove 4-1 and the slider pad 2-2; The V-type groove 4-1 two ends of described V-type groove derby 4 are provided with spigot surface 4-2.

As shown in Figure 6, establish block arm 3-1 and masonry 3-3 on the describedblock lid 3; Masonry 3-3 is provided with chamfering 3-2; Build arm 3-1 and be provided with draw-in groove 3-4.

As shown in Figure 7, establish lock pin hole 5-2 in the describedlock pin 5, lock pin hole 5-2 can annotate a pre-buried fiber segment by glue, and lock pin hole front end is a pommel face 5-1, and optical fiber guiding taper hole 5-3 is established in the rear end.

As shown in Figure 8, establish fibre-guiding hole 6-2 in the described orientinglug 6 and cross fine hole 6-3, orientinglug 6 front ends are provided with little seam 6-4 and lesser calorie hook 6-5, and spring locating surface 6-6 is established in orientinglug 6 rear ends,spring 7 is pressed on the spring locating surface 6-6, and is looped around on the guiding block 6-1.

As shown in Figure 9, the front end of describedrearmounted casing 8 is established big seam 8-1, spring-advance face 8-9 and a pair of big grab 8-2, andspring 7 is pressed on the spring-advance face 8-9, and big seam 8-1 is connected withhousing 1, and big grab 8-2 is connected with the big hole clipping 1-4 ofhousing 1; Wired retaining 8-10 also is set in the describedrearmounted casing 8, is provided with logical wire casing 8-11 among the line retaining 8-10.

As shown in figure 10, also be provided with line ball platform 9-5 and crust groove 9-4 on the describedcase lid 9, line ball platform 9-5 is pressed on the optical cable crust in therearmounted casing 8.

As shown in figure 11, described unlatching is covered 10 inside surfaces and is established two top board 10-1, and corresponding to the unlatching groove 1-2 ofhousing 1 lower surface, the height of top board 10-1 location is built and covered 3 positions that press down; Described unlatchinglid 10 is established biside plate 10-2 andhousing 1 by closing; Described unlatching is covered 10 front ends and is established all-or-nothing piece 10-3 andrearmounted casing 8 guide edge 8-8 coupling.

Describedpreposition casing 2 and orientinglug 6 flexibly connect.

Describedhousing 1 flexibly connects withrearmounted casing 8.

Optical fiber connector of the present invention, the center line that fine hole 6-3 of mistake between V-type groove 4-1 and the slider pad 2-2 on formation described optical fiber through hole 4-3, lock pin hole 5-2, the orientinglug 6 and two lever arm 8-3 form is on same axis.

The scene of optical fiber connector of the present invention is used and is comprised following steps:

Pre-buried optical-fiber type:

1, the optical fiber for preparing is penetrated optical fiber connector, the line retaining 8-10 surface that optical cable crust otch is adjacent atrearmounted casing 8;

2, depresscase lid 9, fixedly the optical cable crust;

3, take off unlatching andcover 10, depress to build andcover 3, complete connection.

Non-pre-buried optical-fiber type:

1, takes off to open andcover 10, optical fiber connector is packed in the special-purpose plug frock;

2, the optical fiber for preparing is penetrated optical fiber connector, the line retaining 8-10 surface that optical cable crust otch is adjacent atrearmounted casing 8;

3, depresscase lid 9, fixedly the optical cable crust;

4, depress block andcover 3, take off optical fiber connector, complete connection.；

The scene of optical fiber connector of the present invention is opened and is comprised following steps:

1, is pressed into unlatching fromhousing 1 bottom and covers 10, push open to build andcover 3;

2, take off to open andcover 10, back downcase lid 9 along the guide edge 8-8 ofrearmounted casing 8 with all-or-nothing piece 10-3;

3, take off optical cable, finish unlatching.

Claims (5)

1. a case is built formula and can be repeated to open the optical fiber connector of use, comprise preposition casing assembly (11) that is used for fixing optical fiber and the rearmounted casing assembly (12) that is used for fixing the optical fiber cable crust, described preposition casing assembly (11) is fixedlyed connected with rearmounted casing assembly (12), described preposition casing assembly (11) comprises housing (1), preposition casing (2), build lid (3), V-type groove derby (4), lock pin (5) and orienting lug (6), described block lid (3) is arranged on the housing (1), described preposition casing (2), V-type groove derby (4), lock pin (5) and orienting lug (6) are arranged in the housing (1), described casing (2) is provided with unsteady muscle (2-2) and builds groove (2-5), described block lid (3) comprises builds arm (3-1) and masonry (3-3), described masonry (3-3) is suitable with described block groove (2-5), it is characterized in that: on described housing (1), also be provided with one and open lid (10), this unlatching lid (10) is oppositely arranged with described block lid (3), open lid (10) and comprise at least one top board (10-1), this top board (10-1) can act on the block arm (3-1) of described block lid (3) and go up and open described block lid (3).

2. case according to claim 1 is built formula can repeat to open the optical fiber connector of use, it is characterized in that: described rearmounted casing assembly (12) comprises rearmounted casing (8) and case lid (9), in described rearmounted casing (8), be provided with a pair of lever arm (8-3) and decide groove (8-5), be provided with pawl (8-4) at the inboard opposite face of this lever arm (8-3); Have in described case lid (9) inside and decide the corresponding building block of groove (8-5) (9-2), described case lid (9) fixes with described casing (8), and the fixing described building block in back (9-2) places that to decide groove (8-5) interior and push described lever arm (8-3).

3. case according to claim 2 is built formula can repeat to open the optical fiber connector of use, it is characterized in that: also be provided with a pair of protruding axle (8-6) He Katai (8-7) in described casing (8) both sides, the both sides of described case lid (9) are provided with axis hole (9-1) and hole clipping (9-3), and protruding axle (8-6) He Katai (8-7) of described axis hole (9-1) and hole clipping (9-3) and rearmounted casing (8) is by closing; Case lid (9) by closing, and be the center rotation with protruding axle (8-6) by the protruding axle (8-6) on axis hole (9-1) and the rearmounted casing (8).

4. case according to claim 3 is built formula can repeat to open the optical fiber connector of use, it is characterized in that: described unlatching lid (10) also comprises a pair of all-or-nothing piece (10-3), described rearmounted casing (8) is provided with guide edge (8-8), described all-or-nothing piece (10-3) can act on the described guide edge (8-8), strut case lid (8) by the sex change of all-or-nothing piece (10-3) elasticity, thereby make hole clipping (9-3) on the case lid (8) break away from Ka Tai (8-7) on the rearmounted casing (8).

5. case according to claim 4 is built formula can repeat to open the optical fiber connector of use, it is characterized in that: also be provided with a spring (7) between described preposition casing assembly (11) and rearmounted casing assembly (12), described preposition casing assembly (11) is pegged graft or snapping with rearmounted casing assembly (12).

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