CN110456460B

CN110456460B - Self-protection door assembly and self-protection optical fiber connector

Info

Publication number: CN110456460B
Application number: CN201910708499.4A
Authority: CN
Inventors: 兰梦辉; 孙晓龙; 郝佳佳; 王刚
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2021-05-11
Anticipated expiration: 2039-08-01
Also published as: CN110456460A

Abstract

The invention relates to a self-protection optical fiber connector of a self-protection door assembly, which comprises a plug and a socket, wherein the front end of the plug is inserted in a butt mode, the plug comprises an outer shell, the front end of the outer shell is larger than the rear end of the outer shell, the outer shell is in a stepped shaft shape, a sleeve is arranged in the outer shell in a sliding mode, and a cavity for inserting the front end of the socket shell is formed between the inner wall of the large-diameter end and; the plug inner shell with the back end surface abutting against the inner wall of the outer shell is arranged in the sleeve in a sliding mode, an elastic piece for providing backward force for the sleeve is arranged between the plug inner shell and the sleeve, and a stop block for preventing the plug inner shell from sliding backwards is further arranged in the sleeve; the front ends of the plug cylinder and the socket shell are both fixed with a self-protection door component, and the surface of the slider in the self-protection door component, which faces towards the plug inner shell and faces/deviates from the opening, is a downward inclined surface. The mode that this invention fiber connector is inserting the automatic opening and shutting of in-process guard gate avoids unexpected injury of laser in operation process to provide the assurance for fiber connector performance.

Description

Self-protection door assembly and self-protection optical fiber connector

Technical Field

The invention belongs to the field of connectors and relates to a self-protection door assembly and a self-protection optical fiber connector.

Background

The optical fiber connector is a device for performing detachable (movable) connection between optical fibers, and precisely butt-joints two ends of the optical fibers so as to maximally couple optical energy output by a transmitting optical fiber into a receiving optical fiber and minimize the influence on a system caused by the optical fiber connector intervening in an optical link, which is a basic requirement of the optical fiber connector.

At present, in some special occasions of optical fiber connector application, such as transmitting high-power laser, if a conventional optical fiber connector is used, accidental laser injury can be caused, generally, when the laser power reaches more than 5mW, the retina can be immediately injured when the light beam is watched for a few seconds, and when the laser power is at 1W or more, direct skin injury can be caused. In addition, under the complex and changeable environment that needs often plug, the fiber end face is easily polluted by the dust, can cause the fiber end face terminal surface to ablate when transmitting high power laser, can all cause the influence to operating personnel's safety and connector performance.

Disclosure of Invention

The invention provides a self-protection door assembly and a self-protection optical fiber connector with the same, overcomes the defects of the prior art, provides a mode for automatically opening and closing a protection door in the insertion and closing process of the optical fiber connector, avoids accidental laser injury in the operation process, and guarantees the performance of the optical fiber connector.

The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. The self-protection door assembly provided by the invention comprises a fixed frame 2 with one open end and an opening 26 at the lower part of the other end, wherein a sliding block 1 which is pressed and blocked at a bayonet 26 by an elastic piece arranged along the height direction of the fixed frame 2 is arranged on a sliding rail which extends along the height direction in the fixed frame 2 and avoids the position corresponding to the opening 26 in a sliding way, and the surface of the sliding block 1 departing from or facing the opening at the lower part of the fixed frame is a downward inclined surface.

The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.

Aforesaid is from protecting door subassembly, wherein the slide rail constitute by the pin 3 and this fixed frame left and right sides face of wearing to establish at fixed frame 2, wherein the pin 3 passes slider 1, the elastic component is arranged and is pressed on slider 1 along pin 3, and the 1 both sides of slider closely laminate on fixed frame left and right sides face.

In an embodiment of the self-protective door assembly, the elastic member is a spring distributed around the pin, and the cross section of the slider is in a right triangle, and an upper surface of the slider is perpendicular to the pin.

The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. The invention provides a self-protection optical fiber connector, which comprises a plug and a socket, wherein the front end of the plug is oppositely inserted, the plug comprises an outer shell 8 with a large front end and a small rear end and in a stepped shaft shape, a sleeve 5 is arranged in the outer shell in a sliding mode, and a cavity for inserting the front end of the socket shell is formed between the inner wall of the large-diameter end and the sleeve 5; the plug inner shell with the back end surface abutting against the inner wall of the outer shell 8 is arranged in the sleeve 5 in a sliding manner, an elastic piece 15 for providing backward force for the sleeve 5 is arranged between the sleeve and the plug inner shell, and a stop block 7 for preventing the plug inner shell from sliding backwards is also arranged in the sleeve 5; the front ends of the plug cylinder 5 and the socket shell 24 are both fixed with a self-protection door assembly 21, and the surface of the sliding block 1 in the self-protection door assembly, which faces towards the plug inner shell and faces/departs from the opening 26, is a downward inclined surface.

The self-shielded optical fiber connector described above, wherein the slider 1 of the self-shielded door assembly with the sleeve front end faces away from the opening 26 as a downward slope; the face of the self-shielding door assembly slider 1 at the front end of the receptacle housing 24 facing the opening 26 is downwardly sloped.

In the self-protection optical fiber connector, the outer peripheral surface of the inner housing of the plug is provided with a boss, two ends of the elastic member 15 are respectively pressed on the inner wall of the sleeve and the front end surface of the boss, and the rear end surface of the boss is blocked on the stop block 7 in the sleeve.

In the self-protection optical fiber connector, the plug inner housing includes a front housing 6 fixed axially back and forth and capable of passing through the opening 26, and a rear housing 9 having a rear end surface abutting against the plug outer housing, and the boss is located on an outer peripheral surface of a front end of the rear housing.

Aforementioned from protection fiber connector, wherein the through-hole of 8 big footpath ends rear sides of plug shell body in be equipped with the couple 14 that is equipped with of pressing end and buckle end of draw-in groove 25 buckle complex on the outer peripheral face of socket shell body, this couple 14 rotates through the torsional spring and installs in the through-hole of plug shell body, and its buckle end is equipped with and stretches into in the shell body with draw-in groove 25 complex trip.

In the self-protection optical fiber connector, the outer peripheral surface of the front end of the plug outer housing is provided with a fixing protrusion 22 fixedly connected with a fixing plate 23 on the outer peripheral surface of the socket outer housing.

In the self-protection optical fiber connector, the receiving frame 17 and the self-protection door assembly 24 fixedly connected with each other are sequentially fixed from inside to outside in the cavity at the front end of the socket housing 24, wherein the rear end of the receiving frame 17 is open, the front end is provided with an opening corresponding to the opening 26 at the lower part of the fixing frame of the protection door assembly and used for the front end of the inner housing of the plug to pass through, and the front end surface and the rear end surface of the sliding block 1 are respectively and tightly attached to the surface at the front end of the fixing frame 2 where the sliding block is located and the surface at the front; the front end face and the rear end face of a sliding block fixed at the front end of the socket sleeve and in the self-protection door assembly are tightly attached to the front end face of the fixing frame and the front end face of the sleeve respectively.

Compared with the prior art, the invention has obvious advantages and beneficial effects. By means of the technical scheme, the invention can achieve considerable technical progress and practicability, has wide industrial utilization value and at least has the following advantages: the mode that this invention fiber connector is inserting the automatic opening and shutting of in-process guard gate avoids unexpected injury of laser in operation process to provide the assurance for fiber connector performance.

Drawings

FIG. 1 is a perspective view of a self-shielding door assembly of the self-shielding fiber optic connector of the present invention;

FIG. 2 is a cross-sectional view of a self-shielding door assembly of the self-shielding fiber optic connector of the present invention;

FIG. 3 is an exploded view of the self-shielding door assembly of the self-shielding fiber optic connector of the present invention;

FIG. 4 is a cross-sectional view of a plug of the self-shielding fiber optic connector of the present invention;

FIG. 5 is a cross-sectional view of a receptacle of the self-shielding fiber optic connector of the present invention;

FIG. 6 is a longitudinal cross-sectional view of the self-shielding fiber optic connector of the present invention in an initial mating state;

FIG. 7 is a transverse cross-sectional view of the self-shielding fiber optic connector of the present invention in an initial mating state;

FIG. 8 is a longitudinal cross-sectional view of the self-shielding fiber optic connector during mating insertion of the connector according to the present invention;

FIG. 9 is a longitudinal cross-sectional view of the self-shielding fiber optic connector of the present invention inserted and latched in place;

FIG. 10 is a transverse cross-sectional view of the self-shielding fiber optic connector of the present invention inserted and mated in place.

[ description of main element symbols ]

1: sliding block

2: fixing frame

3: pin bolt

4: spring

5: sleeve barrel

6: front case

7: stop block

8: plug outer casing

9: rear shell

10: plug end cover

11: plug wire sealing body

12: positioning spring

13: plug end optical fiber contact

14: hook for hanging articles

15: rectangular spring

16: guide pin

17: bearing frame

18: socket end cover

19: socket wire sealing body

20: socket end optical fiber contact

21: self-protection door assembly

22: fixed bulge

23: fixing plate

24: socket shell

25: clamping groove

26: opening of the container

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the self-shielding optical fiber connector according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Please refer to fig. 1-10, which are schematic structural diagrams of various parts of the self-protection optical fiber connector of the present invention, the optical fiber connector includes a plug and a socket with opposite insertion front ends, wherein the plug includes an outer housing 8 with a stepped shaft shape, a sleeve 5 is slidably disposed in a cavity of the outer housing 8, and a cavity for inserting the front end of the socket housing is formed between an outer circumferential surface of the sleeve 5 and an inner wall of a large diameter end of the outer housing 8. Slide sleeve in the sleeve 5 and be equipped with the plug interior casing, this plug interior casing rear end face supports on the inner wall of shell 8, and this plug interior casing front end can stretch out sleeve 5 under the drive of shell 8. An elastic member for providing a backward force to the plug inner housing is further disposed between the plug inner housing and the sleeve 5, and in the embodiment of the present invention, the elastic member is a rectangular spring 15. In order to prevent the outer shell 8 from sliding backwards relative to the sleeve 5 under the driving of the inner shell of the plug, a stop dog 7 for preventing the inner shell of the plug from sliding backwards is further arranged in the sleeve 5. In the embodiment of the invention, the outer peripheral surface of the plug inner shell is provided with a boss, two ends of the rectangular spring are respectively pressed on the inner wall of the sleeve and the front end surface of the boss on the outer peripheral surface of the plug inner shell, and the rear end surface of the boss is blocked on the stop block 7 in the sleeve. In the embodiment of the present invention, the plug inner housing includes a front housing 6 and a rear housing 9 fixed axially forward and backward, a front end of the front housing 6 may extend out of the sleeve, and a tail end of the rear housing 6 abuts against an inner wall of the outer housing, wherein the boss is located on an outer peripheral surface of a front end of the rear housing, but is not limited thereto.

This connector still includes at least two from protection door subassembly 21, should include fixed frame 2 from protection door subassembly 21, this fixed frame 2 one end is opened, other end lower part is equipped with the opening 26 that can supply procapsid 6 to pass, slider 1 slides through the slide rail that extends along this fixed frame 2 direction of height and sets up in this fixed frame 2 and by the upper end fix the opening 26 of elastic component 4 in fixed frame lower part and shutoff this fixed frame front end lower part on the frame, and this slider 1 deviates from or is the decurrent inclined plane to the face of fixed frame lower part opening 26.

In the embodiment of the present invention, the front end of the sleeve 5 is provided with a self-protection door assembly, the fixing frame 2 of the self-protection door assembly is fixed at the front end of the sleeve 5, the slider deviates from the lower opening 26 of the fixing frame, and the surface facing the front shell is a downward inclined surface. Slider 1 is the wedge, and the wedge face of this wedge is just relative with procapsid 6 down, and when the current casing was moving forward to contacting with slider 1, the procapsid promoted the wedge below of this slider rear side, and the force of exerting force to the slider can be decomposed into forward power and ascending power, because the restraint of slide rail for this slider 1 overcomes the elasticity of the elastic component of its top, and the space that gos forward is dodged for the procapsid, makes the procapsid continue to pass the opening of protection door subassembly front end forward.

In the embodiment of the invention, the sliding block 1 is a wedge-shaped block with a right-angled triangle section, that is, the upper end surface of the sliding block is axially parallel to the connector, the front end surface is axially perpendicular to the connector, and the rear end surface is a downward extending inclined surface.

In the embodiment of the invention, the slide rail is composed of pins 3 which are arranged in the fixed frame in a penetrating way and distributed by the left side and the right side of the fixed frame, and the left side and the right side of the fixed frame, wherein the pins 3 penetrate through the sliding block 1, the elastic piece is arranged along the pins 3 and pressed on the sliding block 1, the two sides of the sliding block 3 are tightly attached to the two sides of the fixed frame, and the sliding block can slide up and down by the matching of the pins and the two sides of the fixed frame. Preferably, the elastic member is a spring distributed around the pin, but is not limited thereto.

In the embodiment of the invention, when the self-protection door assembly at the front end of the sleeve is installed in place, the front end surface and the rear end surface of the sliding block in the self-protection door assembly are respectively and tightly attached to the front end surface of the fixing frame and the front end surface of the sleeve, so that the pin is prevented from being damaged by the force of the pin along the connector shaft.

The socket comprises a socket shell 24, a cavity with a large front part and a small rear part is arranged in the socket shell 24, a self-protection door assembly 21 is fixed at the front end of the socket shell 24, a fixing frame 2 of the self-protection door assembly 21 is fixedly connected with the front end of the socket shell 24, the lower part of the front end of the fixing frame 2 is open at the rear end, and a sliding block 1 is opposite to the lower part of the fixing frame 2 and faces a plug shell to form a downward inclined plane. When the plug and the socket are plugged oppositely, the plug outer shell is pushed to move forwards, the outer shell drives the rear shell and the front shell to move forwards together, the front shell pushes the front end of the plug to move upwards from the sliding block of the protective door component, then the front end of the plug penetrates through the opening in the front of the front shell and extends into the front end of the socket, the front end of the socket is pushed to move upwards from the sliding block of the protective door component and then penetrates through the opening which is shielded by the front shell, so that the plug end optical fiber contact element 13 in the front shell is in contact with the socket end optical fiber contact element 20 in the socket, and meanwhile.

In the embodiment of the invention, a bearing frame 17 and a self-protection door assembly 24 which are fixedly connected with each other are fixedly arranged in a cavity at the front end of the socket shell 24 from inside to outside in sequence, wherein the rear end of the bearing frame 17 is open, the front end is provided with an opening which corresponds to the opening at the lower part of the fixing frame of the self-protection door assembly and is used for the front shell to pass through, and the front end surface and the rear end surface of the sliding block 1 are respectively tightly attached to the front end surface of the fixing frame 2 and the front end surface of the bearing frame 17 where the sliding block is arranged so.

In the embodiment of the present invention, the receptacle housing 24 is opened at both sides of the front end thereof, and the frame of the fixing frame 2 located at the opening side of the receptacle housing is fixed to the front end of the receiving frame by connecting pins to the front end of the receiving frame.

Plug housing body major diameter end side is equipped with the through-hole, and couple 14 rotates through the torsional spring to be installed in this through-hole, and this couple 14 is including pressing end and buckle end, and wherein the buckle end is equipped with the trip that stretches into in the housing, be equipped with on the external rear face of socket housing with draw-in groove 25 that the trip on the couple 14 corresponds, when plug and socket pegged graft, press the end of pressing of 14 rear ends of couple and make the trip leave the shell body inner chamber, when plug and socket inserted and closed in place, release and press the end, the trip card of buckle end is in draw-in groove 25, realize plug and socket's locking once.

In the embodiment of the invention, a fixing bulge 22 is arranged on the outer peripheral surface of the front end of the plug outer shell, a corresponding fixing plate 23 is arranged on the outer peripheral surface of the socket outer shell, and the fixing bulge 22 and the fixing plate 23 are connected through a bolt to realize secondary locking of the plug and the socket.

In the embodiment of the invention, the rear end of the plug outer shell is tightly pressed with a plug wire sealing body through a plug end cover, and the rear end of the telescopic socket shell is tightly pressed with a socket wire sealing body through a socket end cover. The plug contact and the socket contact are fixed through positioning springs. And the socket end is further provided with a guide pin for guiding and precisely positioning during the plugging process, but is not limited thereto.

According to the self-protection door assembly, when the front shell moves transversely and contacts the sliding block, the transverse movement of the front shell is converted into the longitudinal movement of the sliding block by using friction force on the inclined surface of the sliding block, the spring is compressed, so that a part of space is opened, the opening and closing functions of the sliding door are realized, and the elasticity of the spring ensures that the sliding door is tightly closed when the sliding door is not inserted. The front housing also pushes open the receptacle-end protective door assembly when it moves laterally and contacts the receptacle-end slide.

The whole inserting process is divided into the initial state shown in fig. 6 and 7, the inserting process shown in fig. 8, and the inserting process shown in fig. 9 and 10.

When the plug is plugged, the plug outer shell is acted on the plug outer shell, when the plug outer shell moves towards the socket end, force can be acted on the rear shell, and the rectangular spring is compressed in the sleeve and moves forwards together with the front shell, the plug end cover, the plug wire sealing body, the positioning spring in the front shell and the plug end optical fiber contact. When the front housing moves forward and contacts the slider, the slider is caused to compress the spring, thereby making room for the front housing to come out of the plug end.

And the front shell can contact the sliding block at the socket end by continuously acting the forward movement of the plug outer shell, and the sliding block can also compress the spring, so that a space is reserved for the front shell to enter the interior of the socket end until the front shell is hung on the socket shell and inserted in place, and at the moment, the end faces of the optical fiber contact pieces at the plug end and the socket end are completely contacted.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a from protection fiber connector, includes plug and socket that the front end was inserted, its characterized in that:

the plug comprises an outer shell (8) which is large in front and small in back and is in a stepped shaft shape, a sleeve (5) is arranged in the outer shell in a sliding mode, and a cavity for inserting the front end of the socket shell is formed between the inner wall of the large-diameter end and the sleeve (5);

the plug inner shell with the rear end surface abutting against the inner wall of the outer shell (8) is arranged in the sleeve (5) in a sliding manner;

plug barrel (5) and socket casing (24) front end all are fixed with from protection door subassembly (21), should open including one end from protection door subassembly (21), the other end lower part is equipped with fixed frame (2) of opening (26), it compresses tightly slider (1) of shutoff in opening (26) department to slide on the slide rail that is provided with along the direction of height extension and avoids opening (26) corresponding position in this fixed frame (2), this slider (1) just moves towards/deviates from the face that supplies opening (26) that the interior casing front end of plug passed for decurrent inclined plane towards the interior casing of plug.

2. The self-shielding fiber optic connector of claim 1, wherein: the surface of the sliding block (1) of the self-protection door assembly at the front end of the sleeve, which is far away from the opening (26), is a downward inclined surface; the surface of the sliding block (1) of the self-protection door assembly at the front end of the socket shell (24), which is opposite to the opening (26), is a downward inclined surface.

3. The self-shielding fiber optic connector of claim 1, wherein: wherein an elastic piece (15) for providing backward force for the plug outer shell is arranged between the plug inner shell and the sleeve (5), and a stop block (7) for preventing the plug inner shell from sliding backwards is also arranged in the sleeve (5).

4. The self-shielding fiber optic connector of claim 3, wherein: the plug comprises a plug inner shell, wherein a boss is arranged on the outer peripheral surface of the plug inner shell, two ends of an elastic piece (15) are respectively pressed on the inner wall of a sleeve and the front end face of the boss, and the rear end face of the boss is blocked on a stop block (7) in the sleeve.

5. The self-shielding fiber optic connector of claim 1, wherein: the plug outer shell (8) big footpath end outer peripheral face rear side the through-hole in be equipped with the couple (14) that have the end of pressing and buckle end of draw-in groove (25) buckle complex on the outer peripheral face of socket shell, should couple (14) rotate through the torsional spring and install in the through-hole of plug outer shell, and its buckle end is equipped with and stretches into in the shell with draw-in groove (25) complex trip.

6. The self-shielding fiber optic connector of claim 1, wherein: wherein, the outer peripheral surface of the front end of the plug outer shell is provided with a fixed bulge (22) fixedly connected with a fixed plate (23) on the outer peripheral surface of the socket outer shell.

7. The self-shielding fiber optic connector of claim 2, wherein: the socket comprises a socket shell (24), wherein a cavity at the front end of the socket shell (24) is internally and sequentially fixed with a bearing frame (17) and a self-protection door component (24) which are fixedly connected with each other from inside to outside, the rear end of the bearing frame (17) is open, the front end of the bearing frame is provided with an opening which corresponds to a lower opening (26) of a protection door component fixing frame and is used for the front end of a plug inner shell to pass through, and the front end surface and the rear end surface of a sliding block (1) are respectively and tightly attached to the surface of the front end of a fixing frame (2) and the surface; the front end face and the rear end face of a sliding block fixed at the front end of the socket sleeve and in the self-protection door assembly are tightly attached to the front end face of the fixing frame and the front end face of the sleeve respectively.

8. The self-shielding fiber optic connector of claim 1, wherein: the sliding rail is composed of a pin (3) penetrating through the fixing frame (2) and the left side face and the right side face of the fixing frame, wherein the pin (3) penetrates through the sliding block (1), the two sides of the sliding block (1) are tightly attached to the left side face and the right side face of the fixing frame, and the elastic piece is arranged along the pin (3) and pressed on the sliding block (1).

9. The self-shielding fiber optic connector of claim 8, wherein: the elastic piece is a spring distributed around the pin, the section of the sliding block is in a right-angled triangle shape, and the upper surface of the sliding block is perpendicular to the pin.