WO2015103726A1

WO2015103726A1 - Optical fiber connector

Info

Publication number: WO2015103726A1
Application number: PCT/CN2014/070215
Authority: WO
Inventors: 李从实; 周震; 王七月
Original assignee: 深圳日海通讯技术股份有限公司
Priority date: 2014-01-07
Filing date: 2014-01-07
Publication date: 2015-07-16

Abstract

An optical fiber connector comprises an adapter (40) and a plug. The plug comprises an outer frame cover (1), an inner frame cover (2), a plug core component (3), a shielding door (4) and a torsion spring (5). The plug core component (3), the inner frame cover (2) and the outer frame cover (1) are arranged sequentially from an inside to an outside. A first pivot shaft (41) is arranged on an upper end of the shielding door (4), and a first pivot hole (411) is arranged in an axial direction of the first pivot shaft (41). A second pivot shaft (11) extrudes inward from a side wall of the outer frame cover (1), and the second pivot shaft (11) inserts into the first pivot hole (411). The torsion spring (5) winds around an outer side of the first pivot shaft (41), a first end of the torsion spring (5) outstretches a first extension arm (51), and the first extension arm (51) is pressed on a front (42) of the shielding door (4). A back (43) of the shielding door (4) is placed against a front end of the plug core component (3). When the plug is pulled out from the adapter (40), the shielding door (4) rotates under an action of the torsion spring (5), and the back (43) of the shielding door (4) is placed against the front end of the plug core component (3), achieving automatic shading and dust prevention; when the plug is inserted into the adapter (40), the plug core component (3) pushes the shielding door (4) to rotate to open, enabling the plug to be plug and play.

Description

Optical fiber connector

Technical field

The present invention relates to the field of communication device technologies, and in particular, to a fiber optic connector.

Background technique

With the increasing popularity of FTTH and even FTTD, the position of optical fiber connectors in optical networks is becoming more and more important. After the optical fiber connectors are pulled out of the adapter, the exposed fiber end faces are susceptible to adhesion by dust and the like, and Causes scratches on the end face, it is necessary to clean the end face frequently. If the cleaning test tool is not suitable or mishandled, the performance of the fiber connection will be greatly reduced, and even the entire link will be paralyzed, so dust is required. At the same time, since the non-professional is connected with the optical fiber. The chance of contact with the device increases. When the fiber connector is pulled out, the laser light emitted by the fiber is harmful to the human eye, and new requirements are imposed on the safety performance of the fiber connector, which requires shading.

At present, the optical fiber connectors in the industry cannot be automatically dust-proof and shading; the safety hazard is relatively large.

Summary of the invention

The object of the present invention is to provide an optical fiber connector capable of automatically shielding and dustproof, and simultaneously satisfying the requirements of plug and play, having a simple structure, convenient use, and high reliability.

To this end, the present invention employs the following technical solutions:

A fiber optic connector includes an adapter and a plug, the plug includes an outer frame sleeve, an inner frame sleeve and a ferrule assembly, the inner frame sleeve is disposed inside the outer frame sleeve, the ferrule assembly is disposed inside the inner frame sleeve, and the cover is further included a first pivotal shaft is disposed at an upper end of the shielding door, and a first pivoting hole is disposed in an axial direction of the first pivoting shaft, and a sidewall of the outer frame sleeve extends inwardly to the second pivoting shaft, The two pivoting shafts are inserted into the first pivoting holes; the torsion spring is wound around the outer side of the first pivoting shaft, the first end of the torsion spring projects out of the first extending arm, and the first protruding arm is pressed against the front of the shielding door. The second end of the torsion spring is located inside the plug; the rear of the shielding door is against the ferrule assembly Hey.

Preferably, the front portion of the inner portion of the outer frame sleeve is provided with a shielding door receiving groove, and the ferrule assembly moves forward. After the shielding door is pushed open, the shielding door is temporarily stored in the shielding door receiving groove.

Preferably, a front surface of the shielding door is provided with a card slot, and the first protruding arm is engaged with the card slot.

Preferably, the blind door is provided at the rear of the shielding door; when the ferrule assembly is in the unconnected state, the front portion of the ferrule assembly is inserted into the blind hole. The depth of the blind hole should not be too deep. It is required to ensure that the ferrule assembly can push the occlusion door open and obtain the effect of dustproof and shading.

Preferably, the cover plate further includes a cover plate that is engaged with the outer frame sleeve; the first pivot hole is a blind hole disposed at the first end of the first pivot shaft; and the second end of the first pivot shaft is provided with a blind a second pivoting hole in the form of a hole, the cover plate projects inwardly from the third pivoting shaft, and the third pivoting shaft is inserted into the second pivoting hole; the first pivoting hole is coaxially disposed with the second pivoting hole.

Preferably, the cover plate projects inwardly from the notched cylinder, the cylinder is disposed coaxially with the third pivot shaft, and the first pivot shaft is inserted into the cylinder.

Preferably, the outer frame sleeve protrudes inwardly from the positioning protrusion, and the second end of the torsion spring is limited to the positioning protrusion.

Preferably, the retracting spring is further included, and one side of the outer frame sleeve is provided with a retreating spring receiving groove; the front end of the decoupling spring receiving groove is limited to the front end of the retreating spring, and the rear end of the decoupling spring receiving groove is open; the rear end of the inner frame sleeve is disposed After the plug is assembled, the retracting projection closes the rear end of the retracting spring receiving groove, and the retracting spring is placed in the decoupling spring receiving groove; after the plug and the adapter are assembled, the retracting spring is in the retreating projection and the decoupling spring receiving groove The compression of the front wall is in a compressed state, and when the plug is disconnected from the adapter, the tension of the retracting spring causes the inner frame and the outer frame to be reset.

Preferably, the left and right sides of the inner frame sleeve are provided with a retreating protrusion, and the left and right sides of the outer side of the outer frame sleeve are provided with a retreating step; after the inner frame sleeve and the outer frame are matched, the retracting protrusion and the retreating step are assembly.

Preferably, the assembly spring, the snap ring, the fastening sleeve, the collar and the tail sleeve are further included; the ferrule assembly and The front part of the snap ring is assembled, the assembly spring is assembled with the rear of the snap ring; the collar is sleeved at the rear of the fastening sleeve; the beneficial effects of the invention are: A fiber optic connector comprising an adapter and a plug, a plug The outer frame sleeve, the inner frame sleeve and the ferrule assembly are arranged, the inner frame sleeve is disposed inside the outer frame sleeve, the ferrule assembly is disposed inside the inner frame sleeve, and further comprises a shielding door and a torsion spring, wherein the upper end of the shielding door is provided with a first a pivoting shaft, the first pivoting shaft is axially disposed with a first pivoting hole, the side wall of the outer frame sleeve projects the second pivoting shaft inwardly, and the second pivoting shaft is inserted into the first pivoting hole; The spring is wound around the outer side of the first pivoting shaft, the first end of the torsion spring protrudes from the first extending arm, the first protruding arm is pressed to the front of the shielding door, and the second end of the torsion spring is limited to the inside of the plug; The rear of the occlusion door abuts against the front end of the ferrule assembly. When the plug is pulled out from the adapter, the shielding door rotates around the first pivoting shaft under the action of the first extending arm of the torsion spring, so that the rear of the shielding door abuts against the front end of the ferrule assembly, and the automatic shading, Dustproof; When the plug is inserted into the adapter, the ferrule assembly pushes the occlusion door to rotate open during the assembly process with the adapter, so that the fiber connector satisfies the requirements of plug and play, and has the advantages of simple structure, convenient use and high reliability.

DRAWINGS

In order to explain the technical solutions of the embodiments of the present invention more clearly and effectively, the drawings used in the embodiments are briefly introduced. It is to be understood that the drawings in the following description are only some embodiments of the present invention. Those of ordinary skill in the art can also make other figures from these figures without the need for creative labor.

1 is a schematic view showing the assembled structure of an optical fiber connector of the present invention.

2 is a schematic exploded view of a fiber optic connector of the present invention.

3 is a schematic structural view of a viewing angle of a shielding door of a fiber optic connector of the present invention.

4 is a structural schematic view of another perspective view of a shutter door of a fiber optic connector of the present invention.

Fig. 5 is a schematic view showing the structure of an outer frame of an optical fiber connector of the present invention. Fig. 6 is a structural schematic view showing another perspective of an outer frame of an optical fiber connector of the present invention.

Figure 7 is a schematic view showing the structure of an inner frame of an optical fiber connector of the present invention.

FIG. 8 is a schematic structural view of the outer frame of the optical fiber connector of the present invention mated with the inner frame.

FIG. 9 is a schematic structural view of the outer frame of the optical fiber connector of the present invention mated with the shielding door.

Figure 10 is a partial enlarged view of A of Figure 9 of an optical fiber connector of the present invention.

11 is a structural schematic view of the ferrule assembly of the optical fiber connector of the present invention mated with the occlusion door. Figure 12 is a schematic view showing the structure of a cover of an optical fiber connector of the present invention.

Figure 13 is a partial structural view of a fiber optic connector of the present invention.

In the picture:

1-outer frame; 11-second pivoting shaft; 12-shield door receiving groove; 13-positioning cam; 14-retracting spring receiving groove; 15-retracting step; 2-inner frame; 21-retracting convex Block; 22-retracting projection; 3-ferrule assembly; 4- shielding door; 41-first pivoting shaft; 411-first pivoting hole; 412-second pivoting hole; 42-front; Card slot; 43-back; 431-blind hole; 5-torsion spring; 51-first extension arm; 6-cover; 61-third pivot shaft; 62-cylinder; 7-retracting spring; 8- Assembly spring; 9-stop ring; 10-fastening sleeve; 20-ring; 30-tail sleeve; 40-adapter.

Concrete J ^r

The present invention provides a fiber optic connector, and in order to enable a person skilled in the art to more clearly understand the solution of the present invention, and to make the above objects, features and advantages of the present invention more comprehensible and easy to understand, The invention will be further illustrated in detail in the description of the preferred embodiments.

A fiber optic connector includes an adapter 40 and a plug. The plug includes an outer frame cover 1, an inner frame cover 2 and a ferrule assembly 3. The inner frame cover 2 is placed inside the outer frame cover 1, and the ferrule assembly 3 is disposed therein. The inside of the frame 2 further includes a shielding door 4 and a torsion spring 5. The upper end of the shielding door 4 is provided with a first pivoting shaft 41. The first pivoting shaft 41 is axially disposed with a first pivoting hole 411, and the outer frame The side wall of the sleeve 1 projects the second pivot shaft 11 inwardly, The second pivoting shaft 11 is inserted into the first pivoting hole 411; the torsion spring 5 is wound around the outer side of the first pivoting shaft 41, and the first end of the torsion spring 5 projects out of the first extending arm 51, and the first extending arm 51 Pressed to the front face 42 of the shutter door 4, the second end of the torsion spring 5 is located inside the plug; the rear face 43 of the shutter door 4 is against the front end of the ferrule assembly 3.

When the plug is pulled out from the adapter, the shielding door 4 rotates around the first pivoting shaft 41 under the action of the first extending arm 51 of the torsion spring 5, and the first pivoting shaft 41 rotates around the second pivoting shaft 11; The rear surface 43 of the shielding door 4 is fixed against the front end of the ferrule assembly 3, and can be automatically shielded from light and dust. When the plug is inserted into the adapter, the ferrule assembly 3 is pushed and opened by the front end of the ferrule assembly 3 during assembly with the adapter. The optical fiber connector meets the requirements of plug and play, and has the advantages of simple structure, convenient use and high reliability.

In the present embodiment, the front portion of the outer frame cover 1 is provided with a shutter door receiving groove 12, and the ferrule assembly 3 is moved forward. After the shutter door 4 is pushed open, the shutter door 4 is temporarily stored in the shutter door receiving groove 12. The shutter 4 is temporarily stored in the shutter door receiving groove 12 during the operation of plugging the adapter.

In this embodiment, the front surface 42 of the shielding door 4 is provided with a card slot 421, and the first extending arm 51 is engaged with the card slot 421. The card slot 421 greatly improves the connection reliability of the shutter door 4 and the torsion spring 5.

In the present embodiment, the rear surface 43 of the shutter door 4 is provided with a blind hole 431; when the ferrule assembly 3 is in the unconnected state, the front portion of the ferrule assembly 3 is inserted into the blind hole 431. The depth of the blind hole 431 is not too deep, and it is required to ensure that the ferrule assembly 3 can push the shielding door 4 away and obtain the effect of dustproof and light shielding.

In this embodiment, the cover plate 6 is further engaged with the outer cover 1; the first pivot hole 411 is a blind hole disposed at the first end of the first pivot shaft 41; The second end of the 41 is provided with a second pivot hole 412 in the form of a blind hole, the cover plate 6 extends inwardly to the third pivot shaft 61, and the third pivot shaft 61 is inserted into the second pivot hole 412; The hole 411 is disposed coaxially with the second pivot hole 412. The third pivoting shaft 61 and the second pivoting shaft 11 are inserted into the pivotal holes (the first pivoting hole 411 and the second pivoting hole 412) coaxially disposed at opposite ends of the first pivoting shaft 41 from both sides.

The structural stability of the first pivot shaft 41 is improved. In the present embodiment, the cover plate 6 projects inwardly from the notched cylinder 62. The cylinder 62 is disposed coaxially with the third pivot shaft 61, and the first pivot shaft 41 is inserted into the cylinder 62. The arrangement of the cylinder 62 further enhances the structural stability of the first pivoting shaft 41, and its notched design effectively circumvents other components inside the plug, avoiding the occurrence of interference.

In this embodiment, the outer frame sleeve 1 projects inwardly from the positioning protrusion 13, and the second end of the torsion spring 5 is located at the positioning protrusion 13. The second end of the torsion spring 5 hooks the positioning protrusion 13 so that the torsion spring 5 can accumulate the torque after the shielding door 4 is rotated, so that after the plug is pulled out from the adapter, the shielding door 4 is pushed to be pressed tightly. The end of the ferrule assembly 3 protects the optical fiber from exposure.

In this embodiment, the retracting spring 7 is further included. One side of the outer frame sleeve 1 is provided with a retracting spring receiving groove 14; the front end of the decoupling spring receiving groove 14 limits the front end of the decoupling spring 7, and the rear end of the decoupling spring receiving groove 14 is open. The rear end of the inner frame 2 is provided with a retracting projection 21; after the plug is assembled, the retracting projection 21 closes the rear end of the retracting spring receiving groove 14, and the decoupling spring 7 is placed in the retreating spring receiving groove 14; After that, the decoupling spring 7 is in a compressed state under the pressing action of the front wall of the retreating projection 21 and the decoupling spring receiving groove 14, and when the plug is disconnected from the adapter, the tension of the retracting spring 7 causes the inner frame 2 and the outer casing 1 to be Reset.

In this embodiment, the left and right sides of the inner frame sleeve 2 are provided with a retracting protrusion 22, and the left and right sides of the inner side of the outer frame sleeve 1 are provided with a retreating step 15; after the inner frame sleeve 2 and the outer frame sleeve 1 are assembled, The retaining projection 22 is assembled with the retaining step 15.

In this embodiment, the assembly spring 8 , the snap ring 9 , the fastening sleeve 10 , the collar 20 and the tail sleeve 30 are further included; the ferrule assembly 3 is assembled with the front portion of the stop ring 9 , and the spring 8 is assembled and stopped. The rear portion of the ring 9 is assembled; the collar 20 is sleeved at the rear of the fastening sleeve 10; the tail sleeve 30 is sleeved outside the stop ring 9.

The technical principles of the present invention have been described above in connection with specific embodiments. The descriptions are only intended to explain the principles of the invention and are not to be construed as limiting the scope of the invention. Based on here It is to be understood that those skilled in the art will be able to devise other embodiments of the present invention without departing from the scope of the invention.

Claims

Claim

A fiber optic connector comprising a plug and an adapter (40), the plug comprising an outer frame sleeve (1), an inner frame sleeve (2) and a ferrule assembly (3), the inner frame sleeve (2) being placed outside Inside the frame (1), ferrule assembly

(3) disposed inside the inner frame (2), further comprising a shielding door (4) and a torsion spring (5), wherein the upper end of the shielding door (4) is provided with a first pivoting shaft (41) The first pivoting shaft (41) is axially disposed with a first pivot hole (411), and a sidewall of the outer frame sleeve (1) projects inwardly from the second pivoting shaft (11). The second pivot shaft (11) is inserted into the first pivot hole (411); the torsion spring (5) is wound around the outer side of the first pivot shaft (41), the torsion spring (5) The first end protrudes from the first projecting arm (51), the first projecting arm (51) is pressed against the front face (42) of the shutter door (4), and the second of the torsion spring (5) The end is located inside the plug; the rear face (43) of the shutter door (4) is against the front end of the ferrule assembly (3).

2. The fiber optic connector according to claim 1, wherein a front portion of the inner portion of the outer frame (1) is provided with a shutter door receiving groove (12), and the ferrule assembly (3) is forward After the occlusion door (4) is pushed away, the occlusion door (4) is temporarily stored in the occlusion door accommodating groove (12).

3. The fiber optic connector of claim 1 wherein: the front of the occlusion door (4)

(42) A card slot (421) is provided, and the first extension arm (51) is engaged with the card slot (421).

4. The fiber optic connector of claim 1, wherein the rear of the occlusion door (4)

(43) A blind hole (431) is provided; when the ferrule assembly (3) is in an unconnected state, the front portion of the ferrule assembly (3) is inserted into the blind hole (431).

The optical fiber connector according to claim 1, further comprising a cover plate (6), wherein the cover plate (6) is engaged with the outer frame sleeve (1); the first pivot hole ( 411) is a blind hole disposed at a first end of the first pivot shaft (41); a second pivot hole (412) is disposed at a second end of the first pivot shaft (41) The cover plate (6) protrudes inwardly from the third pivot shaft (61), and the third pivot shaft (61) is inserted into the second pivot hole (412); the first pivotal connection a hole (411) and the second pivotal connection Hole (412) is coaxially set.

6. The fiber optic connector according to claim 5, wherein the cover plate (6) projects a notched cylinder (62) inwardly, the cylinder (62) and the third pivot The shaft (61) is coaxially disposed, and the first pivot shaft (41) is inserted into the cylinder (62).

The optical fiber connector according to claim 1, wherein the outer frame sleeve (1) protrudes inwardly from the positioning protrusion (13), and the second end of the torsion spring (5) is located at the Positioning the bump (13).

The optical fiber connector according to claim 1, further comprising a decoupling spring (7), one side of the outer frame sleeve (1) is provided with a decoupling spring receiving groove (14); The front end of the (14) is limited to the front end of the decoupling spring (7), the rear end of the decoup spring receiving groove (14) is open; the rear end of the inner frame sleeve (2) is provided with a retreating protrusion (21) After the plug is assembled, the retracting projection (21) closes the rear end of the decoupling spring receiving groove (14), and the decoupling spring (7) is placed in the decoupling spring receiving groove (14); After the adapter is assembled, the retracting spring (7) is compressed under the squeezing action of the front wall of the decoupling projection (21) and the decoupling spring receiving groove (14), and the ejecting spring (7) when the optical connector is disconnected from the adapter. The tension causes the inner frame (2) and the outer frame (1) to be reset.

The optical fiber connector according to claim 1, wherein the left and right sides of the inner frame (2) are provided with a retracting protrusion (22), and the inner side of the outer frame (1) The left and right sides are provided with a retreating step (15); after the inner frame sleeve (2) is assembled with the outer frame sleeve (1), the retracting protrusion (22) and the retreating step (15) assembly.

10. The fiber optic connector of claim 1 further comprising a mounting spring (8), a snap ring (9), a clamping sleeve (10), a collar (20), and a tail sleeve (30) The ferrule assembly (3) is assembled with the front portion of the stop ring (9), and the assembly spring (8) is assembled with the rear end of the stop ring (9); the collar (20) Socketed to the rear of the fastening sleeve (10); the tail sleeve (30) is sleeved outside the stop ring (9).