CN102340078A

CN102340078A - Connector

Info

Publication number: CN102340078A
Application number: CN2010102354233A
Authority: CN
Inventors: 王立江; 尧中华; 郑启升
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2010-07-24
Filing date: 2010-07-24
Publication date: 2012-02-01
Anticipated expiration: 2030-07-24
Also published as: CN102340078B

Abstract

The invention discloses a connector which is used for plugging a butt connector. The connector is provided with an accommodating space for accommodating the butt connector and comprises an insulation body and an optical fiber module arranged on the insulation body, wherein the optical fiber module comprises an optical element which can be exposed in the accommodating space for transmitting optical signals. The connector also comprises a dust-proof device which comprises a revolution door and sliding blocks capable of driving the revolution door to revolve; the sliding blocks can move forth and back along the plugging direction of the butt connector to drive the revolution door to revolve, so that the optical element is shielded by the revolution door or exposed in the accommodating space.

Description

Connector

[technical field]

The relevant a kind of connector of the present invention, but relate in particular to a kind of connector of transmission optics signal.

[background technology]

The prior art relevant with the present invention sees also on January 14th, 2009 disclosed Chinese invention patent and discloses CN101345358A number; But this patent discloses a kind of transmission optics signal improving the connector of transmission speed, and it comprises in order to the host cavity of accommodating banjo, insulating body, is fixed on the conducting terminal on the insulating body and is fixed on the insulating body and in order to improve the optical fiber of signaling rate.Said insulating body is provided with the hyoplastron of giving prominence to and be positioned at host cavity forward, and the lower surface of said hyoplastron is provided with some accepting grooves.Said conducting terminal comprises the elastic contact part that can in accepting groove, deform.Said optical fiber comprises the optical element that is positioned at the hyoplastron below and is exposed to host cavity forward.But said optical element is exposed to forward in the external environment, tires easily dust stratification dirt in the long-term use and because optical element is positioned at connector inside, is not easy to cleaning, causes the disabler of optical element easily.

So be necessary to design a kind of connector to solve the problems of the technologies described above.

[summary of the invention]

Technical problem to be solved by this invention is to provide a kind of connector of protecting optical element.

For solving the problems of the technologies described above; The present invention adopts following technical scheme: a kind of connector; In order to the grafting butt connector; This connector is provided with the receiving space of accommodating butt connector, and said connector comprises insulating body and be arranged on the optical fiber module on the insulating body, and said optical fiber module comprises and can be exposed in the receiving space to carry out the optical element of optical signal transmission; Wherein, Said connector also comprises dust guard, but said dust guard comprises the slide block of revolving door and driven rotary door rotation, thereby said slide block can peg graft that direction moves forward and backward so that the revolving door rotation makes optical element be rotated an institute covers or be exposed in the receiving space along butt connector.

Said dust guard comprises the torsion spring that supports said revolving door; Said torsion spring comprises and supports at first support division on the revolving door and support second support division on slide block or insulating body; When slide block moved forward, said first support division driven in rotation door rotation was to cover said optical element.

Said slide block is provided with a pair of pivot connected slot, and the both sides of said revolving door are provided with the pivot that is articulated in the fluting, and said torsion spring also comprises the fixed part that is socketed on the pivot.

Said dust guard also comprises the elastic component that promotes said slide block slip forward.

Said elastic component comprise promote slide block to the pushing part of front slide, be retained on the insulating body and be provided with the socket part of cover access slot and be clamped in the pushing part and the socket part between spring, said pushing part and spring all are housed in the cover access slot of socket part.

Said insulating body comprises first body and second body that fits together; Said first body comprises that main part and autonomous body protrude into first hyoplastron in the receiving space forward; The accepting groove that said main part is provided with holding slot and is positioned at the holding slot top; Some location notchs that said first hyoplastron top is provided with the fluting that connects with holding slot and is positioned at fluting the place ahead and connects with fluting; Said second body comprises the base portion that is retained in the holding slot and extends forward and be housed in second hyoplastron in the fluting from base portion; The top of said second hyoplastron is provided with the passage that some intervals were provided with and were positioned at the location notch rear; Said connector also comprises the USB3.0 conducting terminal, and said USB3.0 conducting terminal comprises some tabular first contact site and some elasticity second contact sites of being located in the location notch that are assembled in the passage and protrude out the second hyoplastron upper surface, and said optical fiber module is housed in the accepting groove of main part and is positioned at the top of second hyoplastron; Said optical element is positioned at the rear of receiving space and is exposed to receiving space forward; The upper surface of said second body is concaved with the holddown groove of accommodating said elastic component downwards, and said main part connects with holding slot and is positioned at the groove above second hyoplastron also being provided with above the holding slot, when slide block slides backward; Revolving door rotates forward under the promotion of main part and slides backward so that optical element is exposed in the receiving space, and slide block and revolving door are housed in the groove of main part simultaneously.

The front end of said slide block is positioned at the rear of elasticity second contact site, and the below of said slide block is provided with the projection that protrudes out downwards, and said second body is provided with from upper surface and is arranged with downwards with location notch of accommodating slide block and the chute that can supply the projection front and back to slide.

The front end of said slide block is provided with and upwards protrudes out the holding block that supports for butt connector, and the front end of main part is provided with depression, and after slide block slided backward, said holding block supported in the depression of main part.

Said slide block is provided with host cavity, and when slide block slided backward, revolving door rotated forward and is housed in the said host cavity.

Said optical fiber module is provided with the reference column that is positioned at the optical element both sides and protrudes out forward; Said revolving door is between two reference columns; Be positioned at receiving space during said revolving door shield light element; So that optical element when being exposed to receiving space, said revolving door is positioned at the receiving space rear when revolving door rotation back.

Compared to prior art; The present invention has following beneficial effect: thus said slide block can peg graft that direction moves forward and backward so that the revolving door rotation makes optical element be rotated an institute covers or be exposed in the receiving space along butt connector; Therefore; When butt connector does not insert; Dust guard damages optical element and dust and other impurities pollution optical element through revolving door protection optical element to prevent other foreign matters, and after butt connector inserted, dust guard was exposed in the receiving space optical element to carry out optical signal transmission through the revolving door rotation.

[description of drawings]

Fig. 1 is the three-dimensional combination figure of connector of the present invention.

Fig. 2 is the three-dimensional combination figure of another angle of connector of the present invention.

Fig. 3 is the part exploded view of connector of the present invention.

Fig. 4 is the part exploded view after Fig. 3 further decomposes.

Fig. 5 is the sketch map of another angle of Fig. 4.

Fig. 6 is the three-dimensional exploded view of connector of the present invention.

Fig. 7 is the three-dimensional exploded view of another angle of connector of the present invention.

Fig. 8 is the three-dimensional combination figure of the dust guard of connector of the present invention.

Fig. 9 is the three-dimensional exploded view of the dust guard of connector of the present invention.

Figure 10 is the cutaway view along A-A line among Fig. 1.

Figure 11 is that the dust guard of connector of the present invention changed sketch map after butt connector inserted.

Figure 12 is the part exploded view of Figure 11.

Figure 13 is the cutaway view along B-B line among Figure 11.

[embodiment]

Please referring to figs. 1 through shown in Figure 11; Connector 100 of the present invention is provided with host cavity 101 in order to grafting butt connector (not shown), and it comprises insulating body 10, be retained on USB3.0 conducting terminal 3 on the insulating body 1, be retained on the insulating body 10 in order to the optical fiber module 4 that carries out optical signal transmission, be arranged on dust guard 6 and the shell 5 of coated insulation body 10 on the insulating body 10.

Please extremely shown in Figure 7 with reference to Fig. 3, insulating body 10 comprises first body 1 and second body 2 that fits together each other.First body 1 comprises that below one that the front end of main part 11, autonomous body 11 extends forwardly to first hyoplastron 12 and autonomous body 11 in the host cavity 101 is extended forward and the supporting bracket 13 parallel with first hyoplastron 12.The lower surface of supporting bracket 13 is provided with to extending below to be fixed on the fixed leg 135 on the circuit board.The holding slot 116 that main part 11 is provided with accepting groove 115 and is positioned at accepting groove 115 belows; Main part 11 is provided with the groove 117 that connects with holding slot 116 above holding slot 116; Main part 11 is provided with stop block 114 in the front end centre position of accepting groove 115, and the front end of main part 11 is provided with a pair of depression 118 that is positioned at groove 117 tops.The upper surface of first hyoplastron 12 is provided with the fluting 121 that the holding slot 116 with main part 11 connects and is positioned at fluting 121 the place aheads and the both sides, upper surface rear end of some location notchs 122, the first hyoplastrons 12 of connecting with fluting are provided with a pair of blocking part 123 that upwards protrudes out and link to each other with main part 11.

Second body 2 comprises base portion 21 that is retained in the holding slot 116 and second hyoplastron 22 that extends forward from base portion 21.The front end of base portion 21 and rear end all are placed with some holddown grooves 211 that vertically extend.Second hyoplastron 22 is housed in the fluting 121 of first hyoplastron 12, and two apparent surfaces up and down of second hyoplastron 22 all are placed with some passages 221 that extend and be positioned at location notch 122 rears along fore-and-aft direction.The upper surface of second body 2 is provided with a location notch 23 to lower recess, is positioned at location notch 23 also further to a pair of chute 24 of lower recess and the holddown groove 25 that is positioned at chute 24 rears and connects with chute 24, and said location notch 23 is positioned at the rear of second contact site 31.The upper surface rear end of second body 2 is provided with the block 26 that upwards protrudes out.

Arranging of conducting terminal 3 meets the USB3.0 transmission standard, and it comprises the first terminal 31 and second terminal 32.First afterbody 314 that the first terminal 31 comprises the tabular that is housed in the location notch 122 first contact site 311, after the bending downwards of first contact site, 311 rear ends, extends back again and be housed in first connecting portion 312 in the passage 221 of second hyoplastron, 22 lower surfaces, bend extension from first connecting portion, 312 rear ends downwards and be retained on first holding parts 313 in the base portion 21 front end holddown grooves 211 and extend insulating body 1 from first holding parts, 313 lower ends downward.Second afterbody 324 that second terminal 32 comprises in the passage 221 that is housed in second hyoplastron, 22 upper surfaces and upwards stretches out elasticity second contact site 321 of second hyoplastron, 22 upper surfaces, is retained on second holding parts 323 in the holddown groove 211 of base portion 21 rear ends and extends insulating body 1 from second holding parts, 323 lower ends downward.When USB3.0 conducting terminal 3 of the present invention is assembled; Earlier the first terminal 31 and second terminal 32 are assembled on second body 2; Again second body 2 is assembled on first body 1 with conducting terminal 3 as a whole; Thereby make things convenient for the assembling of USB3.0 conducting terminal 3, and can prevent that USB3.0 conducting terminal 3 from deforming in assembling process.First hyoplastron 12 of the present invention combines jointly, and formation one hyoplastron protrudes in the host cavity 101 to connect with butt connector with second hyoplastron 22.In other execution modes of the present invention, first body 1 and second body 2 can one-body moldedly be insulating body 10, and the first terminal 31 edges bury and are molded on the insulating body 10, and second terminal 32 is assembled on the insulating body 10.

Optical fiber module 4 is retained in the accepting groove 115 of insulating body 1.The reference column 46 that optical fiber module 4 front ends are provided with some lens and are positioned at the lens both sides and extend forward; These lens are the optical element 45 that carries out optical delivery on the optical fiber module 4; It can with the optical fiber that is connected to circuit board (not shown) (not shown) optical coupling, so that high-speed optical signal transmission to be provided.The front end centre position of optical fiber module 4 is provided with caulking groove 41, and the stop block 114 on the insulating body 1 supports in caulking groove 41, thereby can prevent that optical fiber module 4 is excessively mobile forward.

See also Fig. 3 to shown in Figure 10; But dust guard 6 comprises the revolving door 61 of shield light element 45, can be in the butt connector direction of insertion along moving forward and backward so that the slide block 62 of revolving door 61 rotation, support the torsion spring 63 of revolving door and promote the elastic component 64 of slide block 62 to front slide.Slide block 62 is housed in the location notch 23 of second body 2 and is positioned at the rear of second contact site 321; Protrude out a pair of projection 621 that can in chute 24, slide and a pair of protuberance 622 that supplies elastic component 64 to support forward under the lower direction of slide block 62; The top of slide block 62 is provided with the holding block 623 that a pair of front end that upwards protrudes out for butt connector supports; Slide block 62 is provided with between projection 621 and protuberance 622 and always puts on the host cavity 625 of lower surface to accommodate revolving door 61; Slide block 62 is formed with a pair of pivot connected slot 628 in the both sides of host cavity 625, the rear end of slide block 62 is provided with the butting section 626 that can be resisted against on the block 26 of second body 2.Revolving door 61 comprises shielding portion 611 and the pivot 612 that protrudes out from the both sides, lower end of shielding portion 611; Said shielding portion 611 is between two reference columns 46 of two optical fiber modules 4 and cover the front end at optical element 45, thereby said pivot 612 is articulated in the pivot connected slot 628 interior revolving doors 61 that can make along pivot 612 rotations.Torsion spring 63 is provided with and supports at first support division 631 of " door " type on the revolving door 61, supports a pair of second support division 632 in the chute 24 at second body 2 and be socketed in a pair of fixed part 633 on the pivot 612.In other embodiments; Torsion spring 63 also can be two that branch is arranged, and pivot connected slot 628 can be separately positioned on revolving door 61 and the slide block 62 with drive-connecting shaft 612, can reach the object of the invention equally; In addition, second support division 632 of torsion spring 63 also can support on slide block 62.Elastic component 64 is retained in the holddown groove 25 of second body 2; It comprises support forward on the protuberance 622 with promote slide block 62 to the pushing part 641 of front slide, be retained on holddown groove 25 in and be provided with the socket part 643 of overlapping access slot 645 and be clamped in pushing part 641 and socket part 643 between spring 642; Pushing part 641 is housed in the cover access slot 645 with spring 642, and pushing part 641 promotes slide block 62 forward under the elastic force effect of spring 642.In other embodiments, elastic component 64 also can be spring.

See also Fig. 1, Fig. 3 and shown in Figure 10; When butt connector does not insert,, revolving door 61 protect optical element 45 to damage optical elements 45 and dust and other impurities pollution optical element 45 to prevent other foreign matters thereby vertically abutting in the front end of main part 11 and cover at the front end of optical element 45 under the active force of torsion spring 63.Figure 11 to Figure 13 has shown after butt connector inserts (not shown); The dust guard 6 of connector 100 of the present invention changes sketch map; When butt connector inserts; The front end of butt connector compresses holding block 623 backward and slides backward in location notch 23 and chute 24 to promote slide block 62; Revolving door 61 rotates forward under the drive of slide block 62 and under the active force of main part 11 front ends and is housed in the host cavity 625 of slide block 62, and revolving door 61 slips in the groove 117 of main part 11 with slide block 62 jointly backward, and the holding block 623 on the slide block 62 supports in the depression 118 of main part 11; Block 26 on second body 2 supports 626 rears, butting section at slide block 62; Thereby can prevent that limited slip block 62 is excessively mobile backward, at this moment, optical element 45 be exposed in the receiving space 101 with butt connector on optical element cooperate and transmitting optical signal.When butt connector is extracted in the receiving space 101 of connector 100; In location notch 23 and chute 24 slides forwards, revolving door 61 is also rotating with the front end that vertically abuts in main part 11 and is covering at optical element 45 front ends and then can protect optical element 45 to prevent other foreign matters and damage optical elements 45 and dust and other impurities is polluted optical element 45 slide block 62 backward to front slide and under the active force of torsion spring 63 under the drive of slide block 62 under the promotion of elastic component 64.

Shell 5 is coated on the insulating body 1 to play shield effectiveness well.The two side 52 that said shell 5 comprises roof 51, the diapire 53 relative with roof 51 and is connected roof 51 and diapire 53.Diapire 53 be provided with a pair of shell fragment 535 that extends forward and between two shell fragments 535 and the shell fragment 535 that extends back to compress butt connector.The rear end of two side 52 is provided with to extending below being fixed on the fixing pin 521 on the circuit board, thereby punching press laterally is formed with fin 525 fixing pin 521 is fixed on the circuit board better on the fixing pin 521.

In connector of the present invention:

But dust guard 6 comprises the slide block 62 of revolving door 61 and driven rotary door rotation, thereby said slide block 62 can peg graft that direction moves forward and backward so that revolving door 61 rotations make optical element 45 be rotated 61 at door covers or be exposed in the receiving space 101 along butt connector.Therefore; When butt connector does not insert; Dust guard 6 damages optical element 45 and dust and other impurities pollution optical element 45 through revolving door 61 protection optical elements 45 to prevent other foreign matters; After butt connector inserted, dust guard 6 was exposed in the receiving space 101 optical element 45 to carry out optical signal transmission through revolving door 61 rotations;

Dust guard 6 comprises the torsion spring 63 that supports said revolving door; When slide block 62 moves forward; Said torsion spring 63 comprises and supports at first support division 631 on the revolving door 61 and support second support division 632 on insulating body 1 (i.e. second body 2) that 61 rotations of said first support division, 631 driven in rotation doors are with shield light element 45, in other embodiments; Second support division 632 also can support on slide block 62, can reach the object of the invention equally;

Slide block 62 is provided with a pair of pivot connected slot 628; The both sides of said revolving door 61 are provided with the pivot 612 that is articulated in the fluting; Torsion spring 63 also comprises the fixed part 633 that is socketed on the pivot 612; In other embodiments, pivot connected slot 628 also can be separately positioned on revolving door 61 and the slide block 62 with drive-connecting shaft 612;

Dust guard 6 comprises the elastic component 64 that promotes said slide block 62 slips forward.Said elastic component 64 comprise promote slide block 62 to the pushing part 641 of front slide, be retained on (promptly in the holddown groove 25 of second body 2) on the insulating body 1 and be provided with the socket part 643 of overlapping access slot 645 and be clamped in pushing part 641 and socket part 643 between spring 642, said pushing part 641 and spring 642 all are housed in the cover access slot 642 of socket part 643.In other embodiments, said elastic component 64 also can be the spring that direct promotion slide block 62 slides;

Insulating body 10 comprises first body 1 and second body 2 that fits together; First body 1 comprises that main part 11 and autonomous body 11 protrude into first hyoplastron 12 in the receiving space 101 forward; The accepting groove 115 that said main part 11 is provided with holding slot 116 and is positioned at holding slot 116 tops; Some location notchs 122 that said first hyoplastron 12 tops are provided with the fluting 121 that connects with holding slot 116 and are positioned at fluting 121 the place aheads and connect with fluting 121; Said second body 2 comprises the base portion 21 that is retained in the holding slot 116 and extends forward and be housed in second hyoplastron 22 in the fluting 121 from base portion 21; The top of said second hyoplastron 22 is provided with the passage 221 that some intervals were provided with and were positioned at location notch 122 rears; Said connector 100 also comprises USB3.0 conducting terminal 3; Said USB3.0 conducting terminal 3 comprises some tabular first contact site 311 and some elasticity second contact sites of being located in the location notch 122 321 that are assembled in the passage 221 and protrude out second hyoplastron, 22 upper surfaces; Said optical fiber module 4 is housed in the accepting groove 115 of main part 11 and is positioned at the top of second hyoplastron 22, and said optical element 45 is positioned at the rear of receiving space 101 and is exposed to receiving space 101 forward, and the upper surface of said second body 2 is concaved with the holddown groove 25 of accommodating elastic component 64 downwards; Said main part 11 connects with holding slot 116 and is positioned at the groove 117 above second hyoplastron 22 also being provided with above the holding slot 116; When slide block 62 slided backward, revolving door 61 rotated forward under the promotion of main part 11 and slides backward so that optical element 45 is exposed in the receiving space 101, and slide block 62 is housed in the groove 117 with revolving door 61 simultaneously;

The front end of slide block 62 is positioned at the rear of elasticity second contact site 321; The below of slide block 62 is provided with the projection 621 that protrudes out downwards, and said second body 2 is provided with from upper surface and is arranged with downwards with location notch 23 of accommodating slide block 62 and the chute 24 that can supply projection 621 front and back to slide;

The front end of slide block 62 is provided with and upwards protrudes out the holding block 623 that supports for butt connector; The front end of main part 11 is provided with depression 118; After slide block 62 slided backward, said holding block 623 supported in the depression 118 of main part in case limited slip block 62 is excessively mobile backward;

Slide block 62 is provided with host cavity 625, and when slide block 62 slided backward, revolving door 61 rotated forward and is housed in the said host cavity 625;

Optical fiber module 4 is provided with the reference column 46 that is positioned at optical element 45 both sides and protrudes out forward; Said revolving door 61 is between two reference columns 46; Be positioned at receiving space 101 during said revolving door 61 shield light elements 45; So that optical element 45 when being exposed to receiving space 101, said revolving door 61 is positioned at receiving space 101 rears when revolving door 61 rotation back.

In sum; More than be merely preferred embodiment of the present invention; Should not limit scope of the present invention with this, promptly every simple equivalent of being done according to claims of the present invention and description of the invention content changes and modifies, and all should still belong in the scope that patent of the present invention contains.

Claims

1. connector; In order to the grafting butt connector; This connector is provided with the receiving space of accommodating butt connector; Said connector comprises insulating body and is arranged on the optical fiber module on the insulating body, and said optical fiber module comprises and can be exposed in the receiving space to carry out the optical element of optical signal transmission that it is characterized in that: said connector also comprises dust guard; But said dust guard comprises the slide block of revolving door and driven rotary door rotation, thereby said slide block can peg graft that direction moves forward and backward so that the revolving door rotation makes optical element be rotated an institute covers or be exposed in the receiving space along butt connector.

2. connector as claimed in claim 1; It is characterized in that: said dust guard comprises the torsion spring that supports said revolving door; Said torsion spring comprises and supports at first support division on the revolving door and support second support division on slide block or insulating body; When slide block moved forward, said first support division driven in rotation door rotation was to cover said optical element.

3. connector as claimed in claim 2 is characterized in that: said slide block is provided with a pair of pivot connected slot, and the both sides of said revolving door are provided with the pivot that is articulated in the fluting, and said torsion spring also comprises the fixed part that is socketed on the pivot.

4. connector as claimed in claim 1 is characterized in that: said dust guard also comprises the elastic component that promotes said slide block slip forward.

5. connector as claimed in claim 4; It is characterized in that: said elastic component comprise promote slide block to the pushing part of front slide, be retained on the insulating body and be provided with the socket part of cover access slot and be clamped in the pushing part and the socket part between spring, said pushing part and spring all are housed in the cover access slot of socket part.

6. connector as claimed in claim 4; It is characterized in that: said insulating body comprises first body and second body that fits together; Said first body comprises that main part and autonomous body protrude into first hyoplastron in the receiving space forward; The accepting groove that said main part is provided with holding slot and is positioned at the holding slot top; Some location notchs that said first hyoplastron top is provided with the fluting that connects with holding slot and is positioned at fluting the place ahead and connects with fluting; Said second body comprises the base portion that is retained in the holding slot and extends forward and be housed in second hyoplastron in the fluting from base portion; The top of said second hyoplastron is provided with the passage that some intervals were provided with and were positioned at the location notch rear; Said connector also comprises the USB3.0 conducting terminal, and said USB3.0 conducting terminal comprises some tabular first contact site and some elasticity second contact sites of being located in the location notch that are assembled in the passage and protrude out the second hyoplastron upper surface, and said optical fiber module is housed in the accepting groove of main part and is positioned at the top of second hyoplastron; Said optical element is positioned at the rear of receiving space and is exposed to receiving space forward; The upper surface of said second body is concaved with the holddown groove of accommodating said elastic component downwards, and said main part connects with holding slot and is positioned at the groove above second hyoplastron also being provided with above the holding slot, when slide block slides backward; Revolving door rotates forward under the promotion of main part and slides backward so that optical element is exposed in the receiving space, and slide block and revolving door are housed in the groove of main part simultaneously.

7. connector as claimed in claim 6; It is characterized in that: the front end of said slide block is positioned at the rear of elasticity second contact site; The below of said slide block is provided with the projection that protrudes out downwards, and said second body is provided with from upper surface and is arranged with downwards with location notch of accommodating slide block and the chute that can supply the projection front and back to slide.

8. connector as claimed in claim 6; It is characterized in that: the front end of said slide block is provided with and upwards protrudes out the holding block that supports for butt connector; The front end of main part is provided with depression, and after slide block slided backward, said holding block supported in the depression of main part.

9. connector as claimed in claim 1 is characterized in that: said slide block is provided with host cavity, and when slide block slided backward, revolving door rotated forward and is housed in the said host cavity.

10. connector as claimed in claim 1; It is characterized in that: said optical fiber module is provided with the reference column that is positioned at the optical element both sides and protrudes out forward; Said revolving door is between two reference columns; Be positioned at receiving space during said revolving door shield light element, so that optical element when being exposed to receiving space, said revolving door is positioned at the receiving space rear when revolving door rotation back.