CN117849954A - Optical fiber connector - Google Patents

Abstract

The present invention relates to the field of connectors, and in particular, to an optical fiber connector. The optical fiber connector comprises a connector shell and an optical fiber lock pin arranged in an optical fiber lock pin mounting hole of the connector shell, wherein the optical fiber lock pin mounting hole is provided with a blocking structure for blocking the optical fiber lock pin in the forward direction, a pressing plate is further arranged on the rear side of the optical fiber lock pin in the connector shell, and an elastic propping structure for providing elastic propping force in the forward and backward directions is arranged between the pressing plate and the optical fiber lock pin so as to press the optical fiber lock pin on the blocking structure. The elastic propping structure can provide forward propping force to press the optical fiber lock core forward on the blocking structure of the optical fiber lock core mounting hole, so that the bending moment of the tail optical cable and the gravity of the optical fiber lock core are resisted, the rear end of the optical fiber lock core is prevented from tilting downwards, the front end of the optical fiber lock core is prevented from tilting upwards, the optical fiber lock core is prevented from tilting, the orifice abrasion of the guide pin hole can be reduced or even eliminated, and the transmission performance of the connector is improved.

Description

Optical fiber connector

Technical Field

The present invention relates to the field of connectors, and in particular, to an optical fiber connector.

Background

The alignment of the optical fiber ferrules of the plug connector and the receptacle connector when the optical fiber connector that mates with the MT optical fiber ferrule has a significant impact on the transmission of optical signals. The structure of the MT optical fiber lock pin suitable for the convenient disassembly environment at present is shown in fig. 1, the optical fiber lock pin 13 is of a rectangular structure, a plurality of optical fiber holes 132 are arranged on the optical fiber lock pin in a row, two guide pin holes 131 are further arranged, the optical fiber lock pin 13 is assembled mainly through the buckling of the connector shell 11 and the pressing plate 12, as shown in fig. 2, an optical fiber lock pin mounting hole is formed in the connector shell 11, the optical fiber lock pin 13 is mounted in the optical fiber lock pin mounting hole, the outer steps of the optical fiber lock pin 13 and the holes of the optical fiber lock pin mounting hole form stop fit in the front-back direction, the holes of the optical fiber lock pin mounting hole stop the optical fiber lock pin 13 in the front direction, the pressing plate 12 is fixedly connected to the rear end of the connector shell 11 so as to stop the optical fiber lock pin 13 from the rear side, and a small gap L exists between the pressing plate 12 and the optical fiber lock pin 13 so that the optical fiber lock pin 13 has a certain floating degree of freedom in the connector shell 11, and the optical fiber lock pin 13 can be accurately aligned through self-adjustment during plug and socket insertion. The connector housing 11 is internally provided with guide pins 17 which, when inserted, are capable of cooperating with guide pin holes in the mating plug connector or the mating receptacle connector for guiding the insertion. In order to further improve the alignment accuracy of the optical fiber core, a secondary guiding structure is further provided on the optical fiber core, typically, a guiding pin hole 131 is provided on one of the optical fiber core 13 of the plug connector and the receptacle connector, and a guiding pin is provided on the other optical fiber core, and the guiding pin cooperates with the guiding pin hole to guide and correct the optical fiber core when the plug and the receptacle are plugged.

After the optical fiber ferrule 13 is installed in the connector housing 11, the rear end of the optical fiber ferrule 13 is inclined downward and the front end is tilted upward due to the bending wiring of the tail optical cable 18 and the influence of gravity, so that the optical fiber ferrule is in an inclined state in the connector housing, as shown in fig. 3, two optical fiber ferrules 13 are installed in the connector housing 11, wherein the position of the lower optical fiber ferrule 13 shows the theoretical position of the optical fiber ferrule, and the position of the upper optical fiber ferrule 13 shows the inclined position state of the optical fiber ferrule. The optical fiber lock pin is in an inclined state, so that when the optical fiber lock pin of the plug and the socket are inserted into the guide pin hole of the optical fiber lock pin of the socket, the guide pin on the optical fiber lock pin of the plug and the socket can wear the hole of the guide pin hole, and the hole is worn more and more after the optical fiber lock pin is inserted and separated for many times, so that the optical fiber loss is larger, and the transmission performance of the connector is affected.

Disclosure of Invention

The invention aims to provide an optical fiber connector, which solves the problem that the transmission performance of the connector is affected due to abrasion of an orifice of a guide pin hole when the guide pin on an optical fiber ferrule is inserted into the guide pin hole caused by the fact that the optical fiber ferrule of the traditional optical fiber connector is inclined in a connector shell.

In order to achieve the above object, the optical fiber connector of the present invention adopts the following technical scheme:

the optical fiber connector comprises a connector shell and an optical fiber lock pin arranged in an optical fiber lock pin mounting hole of the connector shell, wherein the optical fiber lock pin mounting hole is provided with a blocking structure for blocking the optical fiber lock pin in the forward direction, a pressing plate is further arranged on the rear side of the optical fiber lock pin in the connector shell, and an elastic propping structure for providing elastic propping force in the forward and backward directions is arranged between the pressing plate and the optical fiber lock pin so as to press the optical fiber lock pin on the blocking structure.

The beneficial effects are that: the optical fiber connector is improved on the basis of the existing optical fiber connector, the optical fiber core is installed in the optical fiber core installation hole, the optical fiber core installation hole is provided with a blocking structure matched with the optical fiber core so as to block the optical fiber core from the front side, the rear side of the optical fiber core is provided with a pressing plate so as to block the optical fiber core from the rear side, on the basis, an elastic propping structure which provides elastic propping force in the front-rear direction is arranged between the pressing plate and the optical fiber core, the elastic propping structure can provide forward propping force to press the optical fiber core on the blocking structure of the optical fiber core installation hole forwards, so that the rear end of the optical fiber core is prevented from tilting downwards and the front end of the optical fiber core is prevented from tilting upwards against the bending moment of an optical fiber cable and the gravity of the optical fiber core, and the guide pin on the optical fiber core is prevented from tilting when the optical fiber core is inserted into the guide pin hole of the optical fiber core of the adaptive connector, and the guide pin is well aligned with the guide pin hole, so that the guide pin does not generate great friction to the guide pin hole, thus the abrasion of the aperture connector can be reduced, and even the abrasion of the guide pin connector can be eliminated.

Further, the elastic propping structure is provided with a positioning structure which is in limit fit with the optical fiber core insert in the direction perpendicular to the inserting direction.

The beneficial effects are that: the elastic propping structure and the optical fiber inserting core form limit fit in the direction perpendicular to the inserting direction, so that the positioning effect on the optical fiber inserting core can be further improved, the optical fiber inserting core can only float along the inserting direction, and the optical fiber inserting core can be better prevented from inclining.

Further, the elastic propping structure comprises a retaining seat, a positioning column is arranged on the retaining seat and used for being inserted into a guide pin hole of the optical fiber inserting core from the rear side of the optical fiber inserting core or inserted into the guide pin hole of the optical fiber inserting core from the rear side of the optical fiber inserting core and extending out from the front side of the optical fiber inserting core so as to be inserted with the guide pin hole of the butt-joint optical fiber inserting core to keep relative fixation with the optical fiber inserting core in a direction perpendicular to the inserting direction, the positioning column forms the positioning structure, a propping seat is movably arranged on the retaining seat in a guiding mode in the front-back direction, and an elastic piece for providing elastic force in the front-back direction is arranged between the retaining seat and the propping seat, so that the retaining seat is propped against the rear end of the optical fiber inserting core, and the propping seat is provided with a propping end elastically propping against a pressing plate.

The beneficial effects are that: the positioning column on the holding seat is matched with the guide pin hole of the optical fiber lock pin so as to limit the optical fiber lock pin in the direction perpendicular to the inserting direction, the holding seat is movably provided with a propping seat in the front-back direction, and an elastic piece for providing elastic force in the front-back direction is arranged between the holding seat and the propping seat, so that the holding seat is propped against the rear end of the optical fiber lock pin through the elastic piece, the propping seat is propped against the pressing plate, the elastic propping structure and the optical fiber lock pin are convenient to assemble and reliable to position, and stable and reliable propping acting force can be provided for the optical fiber lock pin, so that the position of the optical fiber lock pin is kept more reliably.

Further, the retaining seat is a U-shaped seat, the positioning columns are provided with two end parts which are respectively arranged at two side edges of the U-shaped seat, the top support seat is provided with two end parts which are respectively movably arranged at two side edges of the U-shaped seat, and the space in the U-shaped groove of the U-shaped seat forms an avoidance channel for the tail optical cable of the optical fiber ferrule to pass through.

The beneficial effects are that: the elastic propping structure can provide stable and reliable propping acting force for the optical fiber inserting core, so that the optical fiber inserting core is balanced in stress and stable in stress, the position of the optical fiber inserting core is guaranteed, and the optical fiber inserting core is prevented from inclining.

Further, the top support seat is installed in the holding seat in a front-rear direction by an anti-falling structure.

The beneficial effects are that: the top support seat is arranged in the holding seat in an anti-falling way, so that on one hand, the top support seat can not fall off from the holding seat when floating forwards and backwards, a certain limiting effect can be achieved on the elastic piece, the abutting reliability is further improved, and the position holding effect on the optical fiber inserting core is better; on the other hand, the elastic supporting structure is convenient to assemble into the connector shell.

Further, the rear side of the U-shaped seat is provided with a U-shaped space with an opening facing backwards, the top support seat and the elastic piece are both installed in the U-shaped space, and the anti-falling structure is a concave-convex matching retaining structure arranged between the top support seat and the side wall of the U-shaped space.

The beneficial effects are that: make the jack-up seat and elastic component simple to operate, anticreep simple structure is convenient for set up, and has reduced spare part quantity.

Further, the abutting end is a ball end.

The beneficial effects are that: the propping seat is movably arranged on the holding seat, and the propping end of the propping seat protrudes out of the rear side surface of the holding seat, so that the propping end of the propping seat is a ball end, the propping end can be ensured to smoothly pass through the rear side surface of the holding seat when the propping seat floats on the holding seat, and the clamping stagnation is avoided to influence the propping effect.

Alternatively, the elastic propping structure comprises a propping piece for propping the optical fiber insert core from back to front and an elastic piece which acts between the pressing plate and the propping piece and is used for providing the propping piece with a propping elastic force.

The beneficial effects are that: the elastic propping structure has the advantages of simple integral structure, convenience in arrangement and less number of parts.

Further, the abutting piece is mounted on the pressing plate in a guiding and sliding manner in the front-rear direction.

The beneficial effects are that: the abutting piece is guided to be slidably mounted on the pressing plate in the front-back direction, so that the space occupied by the abutting piece in the connector shell can be reduced, and the abutting piece can move in the front-back direction by restraining the moving direction of the abutting piece, so that the abutting action force on the optical fiber ferrule is guaranteed, and the abutting action is more reliable.

Further, be equipped with the mounting hole that is used for installing elasticity jack-up structure on the clamp plate, support tight piece direction slidable mounting in the mounting hole, the rear end of mounting hole is fixed with the shutoff piece, and the elastic component is installed between supporting tight piece and shutoff piece, and the front end of mounting hole has the anticreep binding off that supplies to support tight piece to expose and prevent to support tight piece to deviate from.

The beneficial effects are that: install elastic propping structure on the clamp plate, make an integral structure with the clamp plate, during the assembly, only need normally install the clamp plate can for the assembly is more convenient, and the position of assurance elastic propping structure in the connector casing that moreover can be better, and then guarantees elastic propping structure to the tight reliability of support of optic fibre lock pin.

Drawings

FIG. 1 is a schematic diagram of a conventional MT fiber ferrule;

FIG. 2 is a schematic illustration of a prior art MT fiber ferrule installed within a connector housing;

FIG. 3 is a schematic illustration of an optical fiber ferrule in an angled state;

FIG. 4 is a schematic view of an embodiment of an optical fiber connector according to the present invention in which a resilient jack structure is adapted to a fiber stub;

FIG. 5 is a perspective view of the resilient jacking structure of FIG. 4;

FIG. 6 is a cross-sectional view of the resilient jacking structure of FIG. 4;

FIG. 7 is a schematic illustration of the resilient jack structure and fiber stub prior to installation into a connector housing;

FIG. 8 is a schematic view of the resilient jack structure and fiber stub after being installed into a connector housing;

FIG. 9 is a schematic view of the resilient jack structure and the fiber stub adjusted to an optimal position when the fiber optic connector is mated with the mating plug connector;

FIG. 10 is a schematic view of the resilient jack structure and the fiber stub remaining in an optimal position under the action of the resilient member after the fiber optic connector is separated from the mating plug connector;

FIG. 11 is a schematic view of a retaining socket in another embodiment of an optical fiber connector according to the present invention;

FIG. 12 is a schematic view of a holder of a further embodiment of the fiber optic connector of the present invention;

FIG. 13 is a schematic view of an elastic jack structure mated with a fiber stub in another embodiment of a fiber optic connector of the present invention;

FIG. 14 is a schematic view of the resilient jacking construction of FIG. 13;

FIG. 15 is a schematic view of another embodiment of a fiber optic connector according to the present invention;

FIG. 16 is a cross-sectional view of the fiber optic connector of FIG. 15;

FIG. 17 is a schematic view of the resilient jacking structure of FIG. 15 mounted on a platen;

in fig. 1-14: 11. a connector housing; 12. a pressing plate; 13. an optical fiber ferrule; 131. a guide pin hole; 132. an optical fiber hole; 14. a holding base; 141. a side edge; 142. a U-shaped space; 143. an inversion edge; 144. a spring mounting groove; 145. positioning columns; 146. an avoidance channel; 147. a blocking edge; 148. a notch; 149. an inclined plane; 15. a top support seat; 151. a tightening end; 152. a flanging; 16. an elastic member; 17. a guide pin; 18. a tail optical cable; 21. a plug optical fiber ferrule; 22. a guide pin;

in fig. 15-17: 11. a connector housing; 12. a pressing plate; 121. an anti-falling closing-in port; 13. an optical fiber ferrule; 16. an elastic member; 17. a guide pin; 19. a tightening member; 20. a closure.

Detailed Description

The features and capabilities of the present invention are described in further detail below in connection with the examples.

The optical fiber connector is further improved on the basis of the existing optical fiber connector, so that the problems that after the optical fiber lock pin of the existing optical fiber connector is installed in a connector shell, the rear end of the optical fiber lock pin is inclined downwards and the front end of the optical fiber lock pin is tilted upwards due to the influence of bending wiring and gravity of an optical cable at the tail part, so that the optical fiber lock pin is in an inclined state in the connector shell, and when the optical fiber lock pin is inserted with an adapting connector, a guide pin of the optical fiber lock pin of the adapting connector can wear an orifice of a guide pin hole of the optical fiber lock pin of the adapting connector, so that optical fiber loss is increased, and the transmission performance of the connector is influenced are solved.

The scheme principle of the optical fiber connector is as follows: the connector comprises a connector shell, wherein an optical fiber inserting core mounting hole is formed in the connector shell, an optical fiber inserting core is mounted in the optical fiber inserting core mounting hole, the optical fiber inserting core mounting hole is provided with a blocking structure for blocking the optical fiber inserting core in the forward direction, a pressing plate is further arranged on the rear side of the optical fiber inserting core in the connector shell, an elastic propping structure for providing elastic propping force in the front-back direction is arranged between the pressing plate and the optical fiber inserting core, the elastic propping structure can provide forward propping force to tightly press the optical fiber inserting core on the blocking structure of the optical fiber inserting core mounting hole forwards, so that the rear end of the optical fiber inserting core is prevented from tilting downwards and the front end of the optical fiber inserting core is prevented from tilting upwards, the optical fiber inserting core is prevented from tilting, when the optical fiber inserting core is inserted into a guide pin hole of the optical fiber inserting core of the adapter, and the guide pin hole is well aligned with the guide pin hole, so that the guide pin cannot generate great friction to the guide pin hole, and abrasion of the guide pin hole can be reduced or even eliminated, and the connector transmission performance is improved.

One embodiment of the fiber optic connector of the present invention:

as shown in fig. 8, the optical fiber connector includes a connector housing 11, and an optical fiber ferrule 13 mounted in the connector housing 11, and the front end of the connector housing 11 is a mating end to be mated with a mating connector. The connector housing 11 is internally provided with an optical fiber inserting core mounting hole, the optical fiber inserting core 13 is mounted in the optical fiber inserting core mounting hole, the outer step of the optical fiber inserting core 13 is in stop fit with the hole of the optical fiber inserting core mounting hole along the front-back direction, the hole of the optical fiber inserting core mounting hole forms a stop structure for stopping the optical fiber inserting core 13 in the front direction, the rear side of the optical fiber inserting core 13 in the connector housing 11 is provided with a pressing plate 12, and the pressing plate 12 is buckled at the rear end of the connector housing 11 and is fixedly connected with the connector housing 11 through bolts. An elastic propping structure for providing elastic propping force in the front-back direction is arranged between the pressing plate 12 and the optical fiber inserting core 13 so as to press the optical fiber inserting core 13 forward on the hole edge of the optical fiber inserting core mounting hole.

In one implementation manner of this embodiment, as shown in fig. 4, an elastic propping structure is movably installed at the rear side of the optical fiber ferrule 13, the elastic propping structure has a positioning structure that is in limit fit with the optical fiber ferrule 13 in a direction perpendicular to the plugging direction, and two guide pin holes 131 extending back and forth and a plurality of optical fiber holes 132 arranged in rows are arranged on the optical fiber ferrule 13. The optical fiber ferrule 13 may be an existing MT optical fiber ferrule.

The elastic propping structure can specifically refer to fig. 5 and 6, and comprises a holding seat 14, and a positioning column 145 adapted to the guide pin hole 131 of the optical fiber ferrule 13 is arranged on the holding seat 14. The positioning posts 145 can be inserted into the guide pin holes 131 of the optical fiber ferrule from the rear side of the optical fiber ferrule 13 while remaining relatively fixed to the optical fiber ferrule 13 in a direction perpendicular to the insertion direction, as shown in fig. 4. The supporting seat 15 is movably mounted on the holding seat 14 along the front-rear direction, an elastic piece 16 for providing elastic force in the front-rear direction is arranged between the holding seat 14 and the supporting seat 15, the rear end of the elastic piece presses the supporting seat 15 to prop up the supporting seat 15 backward, the supporting seat 15 protrudes backward from the holding seat 14 in a natural state, and the supporting seat 15 is provided with a propping end 151 protruding from the rear side surface of the holding seat 14 and used for elastically propping against the pressing plate 12 on the optical fiber connector. The elastic member 16 is specifically a compression spring, and of course, other elastic members such as arcuate spring plates may be used in addition to the compression spring. The holding seat is propped against the rear end of the optical fiber inserting core through the elastic piece, the propping seat is propped against the pressing plate, the elastic propping structure and the optical fiber inserting core are convenient to assemble and reliable to position, and stable and reliable propping acting force can be provided for the optical fiber inserting core, so that the position of the optical fiber inserting core is kept more reliable. Of course, there are many conceivable deformation structures, for example, in another embodiment, the elastic propping structure includes a propping seat, a spring is fixedly connected on a rear side surface of the propping seat, the spring is used for being in tight fit with the pressing plate, a positioning pin extending forward is arranged on a front side surface of the propping seat, the positioning pin is used for being inserted into a guide pin hole of the optical fiber ferrule to be in limit fit with the optical fiber ferrule in a direction perpendicular to the inserting direction, and after the pressing plate is buckled, the spring is compressed to provide forward elastic propping force for the propping seat so as to tightly prop the propping seat on the rear end of the optical fiber ferrule.

In order to ensure that the elastic propping structure provides a stable and reliable propping force to the optical fiber ferrule, in one embodiment, as shown in fig. 5, the holding seat 14 is a U-shaped seat, the positioning columns 145 have two ends and are respectively arranged at two sides 141 of the U-shaped seat, the front end surface of the positioning column 145 is a cambered surface, so that the positioning column 145 can be conveniently inserted into the guide pin hole 131 of the optical fiber ferrule 13, and the propping seat 15 has two ends and is respectively movably arranged on two sides 141 of the U-shaped seat. The space in the U-shaped groove of the U-shaped seat forms an avoidance channel 146 for the tail optical cable 18 of the optical fiber ferrule 13 to pass through. The structure can lead the stress of the optical fiber lock pin to be balanced and the stress to be stable, is more beneficial to ensuring the position of the optical fiber lock pin and avoids the optical fiber lock pin from inclining.

The top support seat 15 is arranged in the holding seat 14 in a front-back direction in an anti-falling way through the anti-falling structure, so that on one hand, the top support seat 15 can not fall off from the holding seat 14 when floating front and back, a certain limiting effect can be achieved on the elastic piece 16, the abutting reliability is further improved, and the position holding effect on the optical fiber insert core is better; on the other hand, the elastic supporting structure is convenient to be assembled into the connector shell integrally. Specifically, as shown in fig. 6, the rear sides of the two sides 141 of the U-shaped seat are respectively provided with a U-shaped space 142 with an opening facing backward, the two top support seats 15 and the two elastic members 16 are respectively movably installed in the two U-shaped spaces 142, and the anti-disengaging structure is a concave-convex matching blocking structure arranged between the top support seats 15 and the side walls of the U-shaped spaces 142. An inward turning edge 143 is provided on the side wall of the U-shaped space 142, and the inward turning edge 143 is in stop fit with the outward turning edge 152 of the top support 15 in the front-rear direction to prevent the top support 15 from being removed from the U-shaped space 142. One end of the elastic piece 16 is abutted against the top support seat 15, two side edges 141 of the U-shaped seat are also provided with elastic piece mounting grooves 144 communicated with the U-shaped space 142, and the other end of the elastic piece 16 extends into the elastic piece mounting grooves 144 and abuts against the bottoms of the elastic piece mounting grooves 144. The holder 14 is integrally injection molded. Of course, other structures may be adopted in the anti-disengaging structure, for example, in another embodiment, a limiting pin is installed on a side wall of the U-shaped space, the limiting pin extends into the U-shaped space, and the top support seat is prevented from disengaging by the limiting pin. Of course, in another embodiment, the top support seat may be movably installed in the holding seat only in the front-rear direction, but the anti-falling structure is not provided, and the top support seat and the holding seat are of a separable two-part structure, and the top support seat is held in the holding seat by pressing the pressing plate after being installed in the connector housing.

As can be seen in fig. 6, the top support 15 comprises a stem and a head connected to one end of the stem, the transition between the head and the stem being provided with a turned-out edge 152, the turned-out edge 152 forming a stop fit with the turned-in edge 143 on the side wall of the U-shaped space 142. The head forms a tight end 151 for elastically propping against the pressing plate 12, and the tight end is a ball end, so that the tight end 151 can smoothly pass through the rear side surface of the holding seat when the top support seat 15 floats on the holding seat 14, and the tight effect is prevented from being influenced by jamming. The compression spring is sleeved on the outer side of the rod part of the top support seat 15, and one end of the compression spring is propped against the head part of the top support seat 15. Of course, it is contemplated that the abutment end of the jack-stay may also be planar.

Before the elastic support structure and the optical fiber ferrule 13 are assembled into the connector housing 11, as shown in fig. 7, the abutting end of the support base 15 protrudes backward from the holding base 14 in a natural state.

After the elastic propping structure and the optical fiber ferrule 13 are assembled into the connector housing 11, as shown in fig. 8, the positioning column 145 on the holding seat 14 is inserted into the guide pin hole 131 of the optical fiber ferrule 13, the pressing plate 12 presses the abutting end 151 of the propping seat 15 to compress the pressing spring again, and the pressing spring presses the holding seat 14 forward to abut the holding seat 14 on the rear end of the optical fiber ferrule 13, so as to resist the bending moment of the tail optical cable 18 of the optical fiber ferrule 13 and the gravity of the optical fiber ferrule, and prevent the rear end of the optical fiber ferrule 13 from tilting downward, thereby preventing the optical fiber ferrule 13 from tilting.

When the receptacle connector and the mating plug connector are plugged, as shown in fig. 9, the plug connector has a plug optical fiber ferrule 21 therein, a guide pin 22 on the plug optical fiber ferrule 21 is inserted into a guide pin hole 131 of the optical fiber ferrule 13 of the receptacle connector, the elastic supporting structure and the optical fiber ferrule 13 are adjusted to an optimal position under the matching guiding action of the guide pin 22 and the guide pin hole 131, and the bottom surface of the holding seat 14 coincides with the pressing plate 12.

When the receptacle connector and the mating plug connector are separated, as shown in fig. 10, the elastic propping structure and the optical fiber ferrule 13 will be kept at the optimal position under the action of the compression spring, so as to realize the pre-positioning of the optical fiber ferrule 13. When the optical fiber is inserted next time, the optical fiber insert core 13 does not need to be greatly adjusted and corrected, the guide pin 22 on the plug optical fiber insert core 21 can smoothly enter the guide pin hole 131 of the optical fiber insert core 13, and great friction can not be caused to the hole in the process that the guide pin 22 passes through the hole and is continuously inserted forward, so that the hole abrasion of the optical fiber insert core 13 can be reduced or even eliminated, and the influence on the transmission performance of the connector due to overlarge hole abrasion is avoided.

It should be noted that, for example, in another embodiment, as shown in fig. 11, the retaining seat may include a bottom edge and two side edges 141 relatively disposed on the bottom edge, the end portions of the two side edges 141 are respectively provided with an inward protruding blocking edge 147, a gap 148 through which the tail optical cable of the optical fiber ferrule passes is formed between the two blocking edges 147, the space in the retaining seat forms an avoidance channel 146 through which the tail optical cable of the optical fiber ferrule passes, and after the tail optical cable enters the avoidance channel, the two blocking edges 147 can limit the tail optical cable to a certain limit so as to limit the tail optical cable in the avoidance channel. Also shown in fig. 11 are positioning posts 145, and support bases (not shown) are mounted on both sides of the holding base, and the positioning posts, the support bases, and the specific mounting manner may be the same as those of the foregoing embodiment.

For example, in another embodiment, as shown in fig. 12, the whole retaining seat is a rectangular seat penetrating front and back, a notch 148 is arranged on one long side of the rectangular seat, the notch is used for the tail optical cable of the optical fiber ferrule to pass through, a space in the rectangular seat forms a avoiding channel 146 for the tail optical cable of the optical fiber ferrule to pass through, a section of the notch 148 is an inclined plane 149, an inclined plane 149 which is consistent with an inclined direction of the section of the notch is arranged on a broadside of the rectangular seat, which is close to the notch, the two inclined planes 149 can guide the tail optical cable to pass through the notch, and after the tail optical cable enters the avoiding channel, the long side of the notch can limit the tail optical cable to limit the tail optical cable in the avoiding channel. Also shown in fig. 12 are positioning posts 145, and the two broad sides of the holder are provided with a top support (not shown), and the positioning posts, the top support and the specific installation method can adopt the structures in the foregoing embodiments.

In the embodiments of the optical fiber connector described above, various embodiments have been provided in which the elastic support structure and the optical fiber ferrule are mated, so far it has to be explained that the elastic support structure and the optical fiber ferrule are mounted in the connector housing, and the connector distinguishes between a male end and a female end, and when one of the adapted plug connector and receptacle connector is the male end, the other is the female end, but in particular, which is the male end, and which is the female end is not strictly limited, so that the elastic support structure and the optical fiber ferrule may be mounted together in the receptacle connector housing as a female end contact or may be mounted together in the plug connector housing as a male end contact. While various embodiments of the resilient jack structure and the optical fiber ferrule together as a female contact have been provided in the above embodiments, a specific embodiment of the resilient jack structure and the optical fiber ferrule together as a male contact will be described below with reference to the accompanying drawings.

In another embodiment, as shown in fig. 13-14, the elastic supporting structure is installed at the rear side of the optical fiber ferrule 13, where the optical fiber ferrule 13 is an existing MT optical fiber ferrule, and two guide pin holes extending back and forth and several optical fiber holes arranged in a row are provided on the optical fiber ferrule 13. The elastic propping structure comprises a holding seat 14 and a propping seat 15 which is guided and movably installed on the holding seat 14 along the front-back direction, an elastic piece 16 is arranged between the holding seat 14 and the propping seat 15, the rear end of the elastic piece 16 is propped against the propping seat 15 to prop up the propping seat 15 backwards, the propping seat 15 is protruded backwards from the holding seat 14 in a natural state, and the propping seat 15 is provided with a propping end 151 protruded from the rear side surface of the holding seat 14 and used for being elastically propped against a pressing plate 12 on the optical fiber connector. The retaining base 14 is provided with a positioning column 145 adapted to the guide pin hole 131 of the optical fiber ferrule 13. As shown in fig. 13, the positioning post 145 is inserted into the guide pin hole 131 of the optical fiber ferrule from the rear side of the optical fiber ferrule 13, protrudes from the front side of the optical fiber ferrule 13 and is fixed relative to the optical fiber ferrule 13 in a direction perpendicular to the plugging direction, and at this time, the portion of the positioning post 145 protruding from the front side of the optical fiber ferrule 13 is used as a guide pin and is matched with the guide pin hole of the optical fiber ferrule of the adapter connector to guide and correct the optical fiber ferrule.

As one embodiment, as shown in fig. 14, the holding seat 14 is a U-shaped seat, the positioning posts 145 are two and respectively disposed at the ends of two sides 141 of the U-shaped seat, the top support seat 15 is two and respectively movably mounted on two sides 141 of the U-shaped seat, and the space in the U-shaped groove of the U-shaped seat forms an avoidance channel 146 for the tail optical cable 18 of the optical fiber ferrule 13 to pass through. The specific structure and the mounting manner of the top support seat can adopt the corresponding structures described in the above embodiments, and are not described herein.

Another embodiment of the fiber optic connector of the present invention is described below:

as shown in fig. 15 to 16, the optical fiber connector includes a connector housing 11, and an optical fiber ferrule 13 mounted in the connector housing 11, and the front end of the connector housing 11 is a mating end to be mated with a mating connector. The connector housing 11 is internally provided with an optical fiber inserting core mounting hole, the optical fiber inserting core 13 is mounted in the optical fiber inserting core mounting hole, the outer step of the optical fiber inserting core 13 is in stop fit with the hole of the optical fiber inserting core mounting hole along the front-back direction, the hole of the optical fiber inserting core mounting hole forms a stop structure for stopping the optical fiber inserting core 13 in the front direction, the rear side of the optical fiber inserting core 13 in the connector housing 11 is provided with a pressing plate 12, and the pressing plate 12 is buckled at the rear end of the connector housing 11 and is fixedly connected with the connector housing 11 through bolts. An elastic propping structure for providing elastic propping force in the front-back direction is arranged between the pressing plate 12 and the optical fiber inserting core 13 so as to press the optical fiber inserting core 13 forward on the hole edge of the optical fiber inserting core mounting hole.

The elastic propping structure comprises a propping piece 19 for propping against the optical fiber inserting core 13 from back to front and an elastic piece 16 acting between the pressing plate 12 and the propping piece 19, wherein the elastic piece 16 is used for providing the propping piece 19 with a propping elastic force so that the propping piece 19 can prop against the tail of the optical fiber inserting core 13. The abutting piece 19 is slidably mounted on the pressing plate 12 in a guiding manner in the front-rear direction, so that the space occupied by the abutting piece 19 in the connector housing 11 can be reduced, and the abutting piece 19 can only move in the front-rear direction by restraining and guiding the moving direction of the abutting piece 19, so that the abutting action force of the optical fiber ferrule 13 in the inserting direction can be guaranteed, and the abutting action is reliable. The elastic member 16 is specifically a compression spring, and of course, other elastic members such as arcuate spring plates may be used in addition to the compression spring. It is conceivable that in another embodiment, the abutment member may be mounted on the front side of the press plate, the elastic member being connected between the press plate and the abutment member, which embodiment has the advantage that no guiding structure has to be provided on the press plate, both the elastic member and the abutment member being located on the front side of the press plate, which is more convenient to mount.

Fig. 16 shows a specific structure of one embodiment of guiding and sliding the abutting piece 19 on the pressing plate 12 in the front-back direction, and as can be seen from fig. 16, the elastic propping structures are symmetrically provided with two, the pressing plate 12 is symmetrically provided with two mounting holes for mounting the elastic propping structures, the abutting piece 19 is guiding and sliding mounted in the mounting holes in the front-back direction, the front end of the mounting hole is provided with an anti-falling opening 121 for preventing the abutting piece 19 from falling off forwards, the front end of the abutting piece 19 can be exposed from the anti-falling opening 121, and the front end of the abutting piece 19 forms an abutting end for abutting on the optical fiber ferrule 13. A blocking member 20 is fixed to the rear end of the mounting hole, and the elastic member 16 is mounted between the abutting member 19 and the blocking member 20. After the elastic propping structure is mounted on the pressing plate 12, the elastic propping structure and the pressing plate 12 form an integral structure, as shown in fig. 17, only the pressing plate 12 is required to be normally mounted during assembly, so that the assembly is more convenient, the position of the elastic propping structure in the connector shell 11 can be better ensured, and the propping reliability of the elastic propping structure to the optical fiber ferrule 13 is further ensured.

Of course, there are many deformation structures that can realize guiding sliding mounting of the abutting piece on the pressing plate in the front-back direction, for example, in another embodiment, a mounting groove for mounting an elastic propping structure is provided on the pressing plate, a notch of the mounting groove is forward, the abutting piece is guiding sliding mounting in the mounting groove in the front-back direction, a drop-preventing retaining ring for preventing the abutting piece from dropping forward is fixed at the notch of the mounting groove, the front end of the abutting piece is exposed from the notch, the elastic piece is mounted in the mounting groove and is positioned at the rear side of the abutting piece, and one end of the elastic piece props against the abutting piece to enable the abutting piece to abut against the tail of the optical fiber ferrule.

The above description is only a preferred embodiment of the present invention, and the patent protection scope of the present invention is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The optical fiber connector comprises a connector shell (11) and an optical fiber inserting core (13) arranged in an optical fiber inserting core mounting hole of the connector shell (11), wherein the optical fiber inserting core mounting hole is provided with a blocking structure for blocking the optical fiber inserting core (13) in the forward direction, and a pressing plate (12) is further arranged on the rear side of the optical fiber inserting core (13) in the connector shell (11), and the optical fiber connector is characterized in that an elastic propping structure for providing elastic propping force in the front-rear direction is arranged between the pressing plate (12) and the optical fiber inserting core (13) so as to press the optical fiber inserting core (13) on the blocking structure.

2. The fiber optic connector of claim 1, wherein the resilient jacking structure has a locating structure that is in positive engagement with the fiber optic ferrule (13) perpendicular to the mating direction.

3. The optical fiber connector according to claim 2, wherein the elastic propping structure comprises a holding seat (14), wherein the holding seat (14) is provided with a positioning column (145) for being inserted into a guide pin hole (131) of the optical fiber inserting core (13) from the rear side of the optical fiber inserting core (13) or being inserted into the guide pin hole (131) of the optical fiber inserting core (13) from the rear side of the optical fiber inserting core (13) and protruding from the front side of the optical fiber inserting core (13) to be inserted with the guide pin hole of the abutting optical fiber inserting core so as to be kept relatively fixed with the optical fiber inserting core (13) in a direction perpendicular to the inserting direction, the positioning column (145) forms the positioning structure, the holding seat (14) is provided with a propping seat (15) in a guiding and movable manner in the front-rear direction, an elastic piece (16) for providing elastic force in the front-rear direction is arranged between the holding seat (14) and the propping seat (15), so that the holding seat (14) is abutted against the rear end of the optical fiber inserting core (13), and the propping seat (15) has a abutted end (151) elastically abutted against the pressing plate (12).

4. A fiber optic connector according to claim 3, wherein the holder (14) is a U-shaped holder, the positioning posts (145) are two and are respectively disposed at two ends of the two sides (141) of the U-shaped holder, the top support (15) is two and is respectively movably mounted on the two sides (141) of the U-shaped holder, and the space in the U-shaped slot of the U-shaped holder forms a avoiding channel (146) for the tail optical cable (18) of the fiber optic ferrule (13) to pass through.

5. The optical fiber connector according to claim 4, wherein the top stay (15) is installed in the holding base (14) by a drop-preventing structure in a front-rear direction.

6. The optical fiber connector according to claim 5, wherein the rear side of the side edge (141) of the U-shaped seat is provided with a U-shaped space (142) with an opening facing backward, the top support seat (15) and the elastic member (16) are both installed in the U-shaped space (142), and the anti-disengagement structure is a concave-convex matching blocking structure arranged between the top support seat (15) and the side wall of the U-shaped space (142).

7. The fiber optic connector of any of claims 3-6, wherein the abutment end (151) is a ball end.

8. The optical fiber connector according to claim 1, wherein the elastic jack structure includes a pressing member (19) for pressing the optical fiber ferrule (13) from the rear to the front, and an elastic member (16) acting between the pressing plate (12) and the pressing member (19) for providing the pressing member (19) with a pressing elastic force.

9. The optical fiber connector according to claim 8, wherein the abutting piece (19) is guide-slidably mounted on the pressing plate (12) in the front-rear direction.

10. The optical fiber connector according to claim 9, wherein the pressing plate (12) is provided with a mounting hole for mounting the elastic supporting structure, the abutting piece (19) is mounted in the mounting hole in a guiding sliding manner, the blocking piece (20) is fixed at the rear end of the mounting hole, the elastic piece (16) is mounted between the abutting piece (19) and the blocking piece (20), and the front end of the mounting hole is provided with an anti-falling opening (121) for exposing the abutting piece (19) and preventing the abutting piece from falling off.