CN212276030U

CN212276030U - Optical fiber connector

Info

Publication number: CN212276030U
Application number: CN202021116011.3U
Authority: CN
Inventors: 杨超
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-01-01
Anticipated expiration: 2030-06-16

Abstract

The utility model discloses an optical fiber connector, include: the optical fiber ferrule, the movable shell, the flexible stopper and the optical fiber assembly are used for blocking pollution particles in the air through the flexible stopper, and the cleanliness of the end face of the optical fiber is guaranteed. When the optical fiber connector is in butt joint, the movable shell is applied with acting force from the first end to the second end, so that the movable shell moves from the first end to the second end relative to the optical fiber ferrule and the optical fiber assembly, and when the movable shell moves to a preset position, the optical fiber end face of the optical fiber assembly passes through the first through hole of the flexible stopper and extends out of the flexible stopper to realize butt joint. After the optical fiber connector is pulled out, the flexible blocking piece can be restored to the initial position, and the cleaning of the end face of the optical fiber is continuously protected.

Description

Optical fiber connector

Technical Field

The utility model relates to the field of communication, especially, relate to an optical fiber connector.

Background

In practical application, the optical fiber connector is easily polluted by dust particles and liquid particles in the air, so that light on the end face of the optical fiber is blocked by the polluted particles, the refractive index or the transmission path of the optical fiber signal is changed, and the transmission quality of the optical fiber signal is reduced.

SUMMERY OF THE UTILITY MODEL

The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

The embodiment of the utility model provides an optical fiber connector can ensure the cleanliness factor of fiber end face, guarantees optical signal's transmission quality.

On the one hand, the embodiment of the utility model provides an optical fiber connector, include:

an optical fiber ferrule;

a movable housing having a first end and a second end, the second end of the movable housing being movably coupled to the fiber ferrule, the movable housing moving relative to the fiber ferrule from the first end toward the second end when the movable housing is subjected to a force from the first end toward the second end;

a flexible stopper disposed at the first end of the movable housing, the flexible stopper having a first through hole;

and the optical fiber assembly is arranged inside the optical fiber ferrule and the movable shell, and when the movable shell moves to a preset position relative to the optical fiber ferrule from the first end to the second end, the optical fiber assembly extends out of the flexible stopper through the first through hole.

The embodiment of the utility model provides an include: the optical fiber connector comprises an optical fiber ferrule, a movable shell, a flexible stopper and an optical fiber assembly, wherein the movable shell is provided with a first end and a second end, the second end of the movable shell is movably connected with the optical fiber ferrule, and when the movable shell is subjected to a force from the first end to the second end, the movable shell moves relative to the optical fiber ferrule from the first end to the second end; the flexible stopper is arranged at the first end of the movable shell and is provided with a first through hole; the optical fiber assembly is arranged inside the optical fiber ferrule and the movable shell, and when the movable shell moves to a preset position relative to the optical fiber ferrule from the first end to the second end, the optical fiber assembly extends out of the flexible stopper through the first through hole. The embodiment of the utility model provides an optical fiber connector keeps off the pollution granule in the separation air through the flexibility, ensures the cleanliness factor of fiber end face. When the optical fiber connector is in butt joint, the movable shell is applied with acting force from the first end to the second end, so that the movable shell moves from the first end to the second end relative to the optical fiber ferrule and the optical fiber assembly, and when the movable shell moves to a preset position, the optical fiber end face of the optical fiber assembly passes through the first through hole of the flexible stopper and extends out of the flexible stopper to realize butt joint. After the optical fiber connector is pulled out, the flexible blocking piece can be restored to the initial position, and the cleaning of the end face of the optical fiber is continuously protected.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the technical solutions of the present invention, and are incorporated in and constitute a part of this specification, together with the embodiments of the present invention for explaining the technical solutions of the present invention, and do not constitute a limitation on the technical solutions of the present invention.

Fig. 1 is a schematic cross-sectional structural diagram of an optical fiber connector according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of an optical fiber connector according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of an optical fiber connector according to an embodiment of the present invention;

fig. 4 is an enlarged schematic view at a in fig. 3.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It should be understood that in the description of the embodiments of the present invention, a plurality (or a plurality) is/are two or more, and more, less, more, etc. are understood as excluding the number, and more, less, more, etc. are understood as including the number. If the description of "first", "second", etc. is used for the purpose of distinguishing technical features, it is not intended to indicate or imply relative importance or to implicitly indicate the number of indicated technical features or to implicitly indicate the precedence of the indicated technical features.

It will be appreciated by those of ordinary skill in the art that embodiments of the invention described herein may be connected by direct connections and by indirect connections via intermediate components.

Currently, in order to prevent the fiber end face of the optical fiber connector from being contaminated, an optical cap is generally provided on the optical fiber connector. The optical fiber connector is characterized in that the optical fiber connector is arranged at the front end of the optical fiber connector in a threaded connection mode, the optical fiber connector needs to be disassembled before butt joint, and at the moment, the end face of the optical fiber is exposed in the air and is easily polluted by particles in the air and grease on the hands of operators.

Still other fiber optic connectors have self-dust-proofing features such as flip doors, but these self-dust-proofing features are often complicated, difficult to manufacture, and costly to manufacture. For example, the torsion parameter of the torsional spring of control turnover door switching needs to be considered in the processing of turnover door, and if the torsion of torsional spring is too big, the optic fibre contact pin is difficult to open the turnover door, and if the torsion undersize of torsional spring, the turnover door can be closed untight, is difficult to guarantee dustproof effect, and consequently the requirement of turnover door processing to the precision is higher.

Therefore, the embodiment of the utility model provides an optical fiber connector can ensure the cleanliness factor of fiber end face, guarantees optical signal's transmission quality.

As shown in fig. 1-4, the optical fiber connector of the present invention includes an optical fiber ferrule 10, a movable housing 20, a flexible stopper 30, and an optical fiber assembly 40. The movable housing 20 has a first end 23 and a second end 24, the second end 24 of the movable housing 20 is movably connected with the optical fiber ferrule 10, and when the movable housing 20 is applied with a force from the first end 23 to the second end 24, the movable housing moves relative to the optical fiber ferrule 10 from the first end 23 to the second end 24; the flexible stopper 30 is disposed at the first end 23 of the movable housing 20, and the flexible stopper 30 has a first through hole; the optical fiber assembly 40 is disposed inside the optical fiber ferrule 10 and the movable housing 20, and when the movable housing 20 is moved to a predetermined position relative to the optical fiber ferrule 10 from the first end 23 toward the second end 24, the optical fiber assembly 40 protrudes out of the flexible stopper 30 through the first through hole.

The embodiment of the utility model provides an optical fiber connector can be used for docking with the optic fibre adapter, and this optic fibre adapter includes: optical module, fiber coupler, flange, fiber socket, etc.

As shown in fig. 1, when the optical fiber connector according to the embodiment of the present invention is in the non-plugging state, the optical fiber assembly 40 is integrally located inside the movable housing 20, and the flexible stopper 30 can block particulate contaminants such as dust in the air from entering the optical fiber connector, thereby ensuring the cleanliness of the optical fiber end surface.

As shown in fig. 2, when the optical fiber connector is plugged with a mating optical fiber adapter, the optical fiber adapter applies a force to the movable housing 20 from the first end 23 toward the second end 24, so that the movable housing 20 moves relative to the optical fiber ferrule 10 and the optical fiber assembly 40 from the first end 23 toward the second end 24, and simultaneously, the optical fiber end face of the optical fiber assembly 40 passes through the first through hole of the flexible stopper 30 and protrudes outside the flexible stopper 30 to be in a connectable state. In the plugging process, the optical fiber end face is positioned in an inner cavity defined by the connector and the adapter, so that the optical fiber end face can be prevented from contacting with the outside air, and the possibility of pollution of the optical fiber end face in the using process is reduced. When the fiber optic connector is removed from the fiber optic adapter, the movable housing 20 and the flexible stop 30 can return to their original positions to continue to protect the fiber-optic endface from cleaning.

By way of example, the first through-hole in the flexible stop 30 may be a cross-hole. When the optical fiber connector is in a non-inserted state, the cross hole is in a closed state, so that particle pollutants such as dust in the air can be effectively prevented from entering the optical fiber connector, and the end face of the optical fiber is protected from being cleaned; when the optical fiber connector is inserted into the optical fiber adapter, the movable housing 20 moves relative to the optical fiber ferrule 10 and the optical fiber assembly 40 from the first end 23 to the second end 24, the optical fiber assembly 40 will push open the cross-hole of the flexible stopper 30 at the first end 23 of the movable housing 20, and the end face of the optical fiber extends out of the flexible stopper 30 and is in a connectable state. It should be understood that the first through hole may also be a cross-shaped hole or other similar shaped holes, and the embodiments of the present invention are not limited to the specific form of the first through hole.

By way of example, the flexible stop 30 may be a flexible structure made of activated carbon fibers. In this example, through utilizing the adsorption efficiency of activated carbon fiber, will influence the light transmission solid state or liquid particulate matter absorption and leave and can influence the region of light transmission, ensure the cleanliness factor of optic fibre terminal surface, ensure the signal quality of optic fibre transmission.

It should be understood that the flexible stop 30 may also be made of a non-woven fabric to block dust, moisture, etc. from entering the interior of the connector by utilizing the moisture resistant properties of the non-woven fabric. In other embodiments, the flexible stopper 30 may also be made of a flexible material such as rubber, and the specific material of the flexible stopper 30 is not limited too much in the embodiments of the present invention.

Illustratively, when the optical fiber connector is plugged into the optical fiber adapter, and the optical fiber assembly 40 passes through the cross-shaped hole or the cross-shaped hole on the flexible stopper 30, the flexible stopper 30 is in contact with the end face of the optical fiber, and the flexible stopper 30 can wipe the end face of the optical fiber to wipe off impurities such as dust attached to the end face of the optical fiber, thereby ensuring the cleanness of the end face of the optical fiber and further ensuring the quality of the optical fiber transmission signal.

As an example, as shown in fig. 2, the optical fiber assembly 40 may include a ferrule 41 and an optical fiber bare core 42, the ferrule 41 being connected with the optical fiber ferrule 10 and located inside the movable housing 20, the ferrule 41 being hollow inside. The optical fiber wire passes through the optical fiber ferrule 10 and enters the movable housing 20, the optical fiber wire in the movable housing 20 is stripped off the outer skin of the optical fiber bare core 42, and the bare optical fiber bare core 42 is inserted into the inner part of the optical fiber ferrule 41 and extends to one end of the optical fiber ferrule 41 close to the flexible stop 30.

Here, the ferrule 41 may be specifically a ferrule 41, and is a positioning member for positioning the optical fiber die 42. As shown in fig. 1, the ferrule 41 is connected to the ferrule 10 and located inside the movable housing 20, and one end surface of the ferrule 41 close to the flexible stopper 30 is a fiber end surface. When the movable housing 20 and the flexible stop 30 are moved toward the second end 24 relative to the ferrule 10, the ferrule 41 extends outside the flexible stop 30, exposing the fiber end face.

In some embodiments, the optical fiber connector further includes a connecting member 50 connecting the ferrule 41 and the fiber ferrule 10, such that the ferrule 41 is connected to the fiber ferrule 10 through the connecting member 50, and the fiber bare core 42 passes through the connecting member 50 into the inside of the ferrule 41.

In some embodiments, the connection member 50 is provided with a catch 51 on the outer side, the movable housing 20 has a second through hole corresponding to the catch 51, the catch 51 protrudes from the second through hole, and the second through hole defines a moving distance of the movable housing 20 relative to the optical fiber ferrule 10.

Illustratively, as shown in fig. 1 and fig. 2, two opposite buckles 51 are disposed on the outer side of the connecting member 50, the movable housing 20 is provided with two second through holes corresponding to the two buckles 51 one by one, the second through holes are elongated holes, and the buckles 51 protrude from the second through holes and can move towards the first end 23 or the second end 24 relative to the second through holes. When the optical fiber connector is inserted into the optical fiber adapter, the buckle 51 may be engaged with an elastic card disposed in the optical fiber adapter to lock the optical fiber connector in the optical fiber adapter, and a "snap" sound mark may be fed back to indicate that the optical fiber connector and the optical fiber adapter are connected in place. When the optical fiber connector and the optical fiber adapter are initially plugged, the movable housing 20 moves towards the second end 24 under the pushing force applied by the optical fiber adapter, and after the optical fiber connector and the optical fiber adapter are connected in place, the buckle 51 can lock the distance between the movable housing 20 and the optical fiber ferrule 10.

Illustratively, the optical fiber connector further includes a first extension spring 60, and the first extension spring 60 is connected to the ferrule 41. Here, the first expansion spring 60 is used to buffer the stress applied to the ferrule 41 during the mating process, and to push the fiber end face tightly by elastic force to ensure the reliability of the fiber connector during the mating process. Illustratively, as shown in fig. 1, an end of the first telescopic spring 60 close to the flexible stop 30 is connected to the ferrule 41, and an end of the first telescopic spring 60 far from the flexible stop 30 is connected to the connecting member 50. It should be understood that in some embodiments, the end of the first extension spring 60 remote from the flexible stop 30 can also be connected to the ferrule 10, and the present invention is not limited to the specific arrangement of the first extension spring 60.

By way of example, the movable housing 20 of the optical fiber connector includes an inner housing 21 and an outer housing 22, the inner housing 21 and the outer housing 22 are fixedly connected, the outer housing 22 is sleeved outside the inner housing 21, the inner housing 21 has a first end 23, and a flexible stopper 30 is disposed at the first end 23 of the inner housing 21.

In some embodiments, a second extension spring 70 is attached to the movable housing 20. Specifically, as shown in fig. 1, one end of the second extension spring 70 close to the flexible stopper 30 is connected to the inner housing 21, and one end of the second extension spring away from the flexible stopper 30 is connected to the latch 51. It should be understood that in some embodiments, the end of the second extension spring 70 remote from the flexible stop 30 can also be connected to the ferrule 10, and the present invention is not limited to the specific arrangement of the second extension spring 70.

Illustratively, when the movable housing 20 moves from the first end 23 to the second end 24 to the preset position, the second extension spring is in a compressed state; when the second extension spring 70 is switched from the compressed state to the extended state, the movable housing 20 moves from the second end 24 toward the first end 23 under the elastic force of the second extension spring 70, i.e. moves from the preset position to the initial position relative to the optical fiber ferrule 10, so as to reset the movable housing 20, and the optical fiber assembly 40 retracts into the inner cavity defined by the flexible stopper 30 and the movable housing 20, so as to continue to protect the optical fiber end surface and prevent impurities such as external dust from contaminating the optical fiber end surface.

Alternatively, the flexible stopper 30 may be adhered to the first end 23 of the inner casing 21, and the flexible stopper 30 may be replaced when more dust and impurities are adhered to the flexible stopper 30.

Optionally, as shown in fig. 1 and 2, the outer side of the housing 22 is provided with anti-slip threads to facilitate the operator to pull the fiber optic connector from the fiber optic adapter.

The embodiment of the utility model provides an optical fiber connector keeps off the pollution granule in the 30 separation air through the flexibility, ensures the cleanliness factor of fiber end face. When the optical fiber connector is mated, the movable housing 20 is forced from the first end 23 toward the second end 24, and then moves from the first end 23 toward the second end 24 relative to the optical fiber assembly 40, and at the same time, the end face of the optical fiber assembly 40 passes through the first through hole of the flexible stop 30 and protrudes out of the flexible stop 30 to achieve mating. After the fiber connector is pulled out, the flexible stopper 30 can be restored to the initial position under the elastic action force, and the cleaning of the fiber end face is continuously protected.

While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.

Claims

1. An optical fiber connector, comprising:

an optical fiber ferrule;

2. The fiber optic connector of claim 1, wherein the first through-hole is a cross-hole or a cross-hole.

3. The fiber optic connector of claim 1, wherein the flexible stop is made of a flexible material.

4. The optical fiber connector according to claim 3, wherein the flexible material comprises activated carbon fiber or non-woven fabric.

5. The fiber optic connector of claim 1, wherein the fiber optic assembly comprises:

the optical fiber ferrule is connected with the optical fiber ferrule and positioned in the movable shell, and the inner part of the optical fiber ferrule is hollow;

the optical fiber bare chip is arranged inside the inserting core and extends to one end, close to the flexible stopper, of the inserting core.

6. The fiber optic connector of claim 5, further comprising:

a connecting member connecting the ferrule and the fiber ferrule; the outer side of the connecting component is provided with a buckle, the movable shell is provided with a second through hole corresponding to the buckle, the buckle protrudes out of the second through hole, and the second through hole limits the moving distance of the movable shell relative to the optical fiber ferrule.

7. The fiber optic connector of claim 5, further comprising:

the first telescopic spring is connected with the inserting core and used for buffering stress borne by the inserting core during butt joint.

8. The fiber optic connector of claim 1, wherein the movable housing includes an inner housing and an outer housing, the inner housing and the outer housing being fixedly connected and the outer housing being disposed outside of the inner housing, the inner housing having the first end, the flexible stop being disposed at the first end of the inner housing.

9. The fiber optic connector of claim 8, wherein the flexible stop is affixed at the first end of the inner housing.

10. The fiber optic connector of claim 8, further comprising:

the second telescopic spring is connected with the inner shell and is in a compressed state when the movable shell moves to a preset position from the first end to the second end relative to the optical fiber ferrule; when the second extension spring is switched from the compressed state to the extended state, the movable housing moves from the preset position to an initial position relative to the optical fiber ferrule.