CN212965520U - External guide optical fiber connector - Google Patents

Abstract

The utility model provides an outer direction fiber connector, including fiber optic plug and optic fibre flange adapter, fiber optic plug includes caudal peduncle and ceramic lock pin, the outside of caudal peduncle is equipped with the cutting ferrule nut, the ceramic intubate that fiber optic flange adapter includes base plate and perpendicular to base plate, the cutting ferrule nut outside is equipped with guide sleeve, and the coaxial cover of guide sleeve's guide part is in the ceramic lock pin outside, and the one end that the caudal peduncle was kept away from to the ceramic lock pin is contracted in guide sleeve's guide part, and the internal diameter of guide part is R, and R satisfies the following formula: r < R₂+R₃‑R₁Wherein R is₁Is the diameter of the optical fiber, R₂Is the inner diameter, R, of a ceramic cannula₃Is the outer part of a ceramic cannulaAnd (4) diameter. The beneficial effects of the utility model are that owing to adopt above-mentioned technical scheme, optical fiber plug and optic fibre flange adapter are at the in-process of connecting, and the tip of pottery lock pin can not contact with ceramic insertion pipe under guide sleeve's effect, and the optic fibre terminal surface of pottery lock pin is difficult for wearing and tearing.

Description

External guide optical fiber connector

Technical Field

The utility model relates to an optical fiber communication technical field, specific be an outer direction fiber connector.

Background

With the development of society, optical fibers are applied in more and more fields, and the problem of optical fiber connection is necessarily involved in the field of optical fiber application. At present, there are three main ways of connecting optical fibers: permanent connection, emergency connection and active connection. Permanent connection is that the connection points of the optical fibers are melted and connected together by means of electric discharge; the emergency connection fixes and connects the two optical fibers together by a mechanical and chemical method; an active connection is a method of connecting a station to a station or a station to a cable using a fiber optic plug and a fiber optic adapter.

The optical fiber plug is mainly connected with the optical fiber adapter in a plug mode of SC, ST, LC, FC, SMA and the like in a movable connection mode, the optical fiber plug is provided with an inserting core wrapping the optical fiber, the optical fiber adapter is provided with an inserting hole matched with the inserting core, and the optical fiber plug and the optical fiber adapter are fixed through a buckle or a thread structure so as to complete the movable connection.

As shown in figures 1 and 2 of the drawings,

the movable connection between the SMA905 plug and the optical fiber flange adapter is taken as an example, the insertion core of the SMA905 plug is made of ceramic materials, the optical fiber hole for inserting the optical fiber 6 is formed in the middle shaft of the ceramic insertion core 2, the optical fiber 6 is inserted into the end part of the tail handle 1 along the optical fiber hole, the end part of the optical fiber 6 extending out of the ceramic insertion core 2 is made to be flush with the end face of the ceramic insertion core or slightly higher than the end face of the ceramic insertion core 2 through a grinding process, the end part of the optical fiber needs to be kept smooth, and therefore transmission efficiency and quality are guaranteed. The optical fiber flange adapter is composed of a substrate and a ceramic inserting pipe 5 perpendicular to the substrate, the inner diameter of the ceramic inserting pipe 5 is matched with the outer diameter of the ceramic inserting core 2, the outer surface of the ceramic inserting pipe 5 is provided with an external thread, and a clamping sleeve nut 3 of the SMA905 plug is provided with an internal thread matched with the external thread. When the plug is used, the protective cap 4 outside the ceramic ferrule 2 is taken down, the ceramic ferrule 2 is inserted by aligning with the inner hole of the ceramic insertion tube 5, and then the movable connection between the SMA905 plug and the optical fiber flange adapter is completed through the matching of the inner thread and the outer thread.

The diameter of the ferrule 2 is very small, only 2-3mm, and in the process of inserting the ferrule 2 into the ferrule 5, because the end face of the optical fiber is exposed on the end face of the ferrule 2, the end face of the optical fiber 6 is very easy to touch the end face of the ferrule 5, so that the end face of the optical fiber 6 is damaged or polluted, and the transmission of light in the optical fiber is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure, easy operation, the difficult optical fiber connector who weares and teares of optic fibre are particularly suitable for the junction of optic fibre and equipment to use.

The technical scheme of the utility model is that:

the utility model provides an outer direction fiber connector, includes optic fibre plug and optic fibre flange adapter, optic fibre plug includes caudal peduncle and ceramic lock pin, the pottery lock pin is coaxial to be set up in the front end of caudal peduncle, the outside of caudal peduncle is equipped with cutting ferrule nut, optic fibre flange adapter includes the ceramic intubate of base plate and perpendicular to base plate, and ceramic intubate's internal diameter cooperatees with ceramic lock pin's external diameter, and the ceramic intubate outside is equipped with the external screw thread with cutting ferrule nut internal thread matched with, the cutting ferrule nut outside is equipped with guide sleeve, and guide sleeve comprises fixed part and guide part, and the fixed part is connected in the cutting ferrule nut outside, and the coaxial cover in the pottery lock pin outside of guide part, and the one end that the caudal peduncle was kept away from to ceramic lock pin contracts: r < R₂+R₃-R₁Wherein R is₁Is the diameter of the optical fiber, R₂Is the inner diameter, R, of a ceramic cannula₃The outer diameter of the ceramic cannula.

And a rotating handle is coaxially arranged on the outer side of the ferrule nut and fixedly connected with the ferrule nut.

The rotating handle and the guide sleeve are integrally injection-molded or detachably connected.

The utility model has the advantages and positive effects that: by adopting the technical scheme, the optical fiber plug and the optical fiber flange adapter are connected, the optical fiber end face of the end part of the ceramic ferrule cannot contact with the ceramic insertion tube under the action of the guide sleeve, the optical fiber end face of the ceramic ferrule is not easy to wear, and the stability of optical fiber connection is improved.

Drawings

FIG. 1 is a schematic structural diagram of an SMA optical fiber plug in the prior art

FIG. 2 is a schematic view of the prior art after the optical fiber plug is connected to the optical fiber flange adapter

FIG. 3 is a schematic view of the structure principle of the fiber optic plug after being connected with the fiber optic flange adapter

FIG. 4 is a schematic sectional view taken along line A-A in FIG. 3

FIG. 5 is a schematic view of the docking of the ferrule and the ferrule with different axes

In the figure:

1. caudal peduncle 2, pottery lock pin 3, cutting ferrule nut

4. Protective cap 5, ceramic cannula 6, optical fiber

7. Guide sleeve 8, rotating handle 71 and fixing part

72. Guide part

Detailed Description

As shown in fig. 3 and 4, the utility model,

the utility model provides an outer direction fiber connector, includes optic fibre plug and optic fibre flange adapter, optic fibre plug includes caudal peduncle 1 and ceramic lock pin 2, 2 coaxial settings in caudal peduncle 1's front end of ceramic lock pin, caudal peduncle 1's the outside is equipped with cutting ferrule nut 3, optic fibre flange adapter includes base plate and perpendicular to base plate's ceramic intubate 5, and the internal diameter of ceramic intubate 5 cooperatees with ceramic lock pin 2's external diameter, and 5 outsides of ceramic intubate are equipped with 3 internal thread matched with external screw threads of cutting ferrule nut, 3 outsides of cutting ferrule nut are equipped with guide sleeve 7, and guide sleeve 7 is by solid guide sleevePortion and guide part constitute, fixed part and 3 fixed connection of cutting ferrule nut, the coaxial cover in the 2 outsides of ceramic lock pin of guide part, the one end that tail handle 1 was kept away from to ceramic lock pin 2 contracts in the guide part of guide sleeve 7, the internal diameter of guide part is R, R ═ R_3,R₃The outer diameter of the ceramic cannula 5.

Through set up guide sleeve 7 in the pottery lock pin 2 outside, make pottery lock pin 2 at the in-process that inserts ceramic cannula 5, through the internal diameter of guide part 72 and the cooperation of ceramic cannula 5 external diameter, make the optic fibre terminal surface at pottery lock pin 2 middle part can not touch with the one end that ceramic cannula 5 kept away from the base plate to the condition of wearing and tearing or pollution has been avoided taking place because of the touching.

The outer side of the ferrule nut 3 is coaxially provided with a rotating handle 8, and the rotating handle 8 is fixedly connected with the ferrule nut 3.

The rotating handle 8 and the guide sleeve 7 are integrally formed by injection molding.

Example 2

As shown in figures 3, 4 and 5,

an external guide optical fiber connector comprises an optical fiber plug and an optical fiber flange adapter, wherein the optical fiber plug comprises a tail handle 1 and a ceramic ferrule 2, the ceramic ferrule 2 is coaxially arranged at the front end of the tail handle 1, a ferrule nut 3 is arranged outside the tail handle 1, the optical fiber flange adapter comprises a substrate and a ceramic inserting pipe 5 vertical to the substrate, the inner diameter of the ceramic inserting pipe 5 is matched with the outer diameter of the ceramic inserting core 2, the outer side of the ceramic inserting pipe 5 is provided with an external thread matched with the internal thread of the ferrule nut 3, the cutting ferrule nut 3 outside is equipped with guide sleeve 7, and guide sleeve comprises fixed part 71 and guide part 72, and fixed part 71 is connected in cutting ferrule nut 3's the outside, and the coaxial cover of guide part 72 is in the 2 outsides of ceramic lock pin, and the one end that tail handle 1 was kept away from to ceramic lock pin 2 contracts in guide sleeve's guide part 72, and the internal diameter of guide part 72 is R, and R satisfies the following formula: r < R₂+R₃-R₁Wherein R is₁Is the diameter, R, of the optical fiber 6₂Is the inner diameter, R, of the ceramic cannula 5₃The outer diameter of the ceramic cannula 5.

Through set up guide sleeve 7 in the pottery lock pin 2 outside, make pottery lock pin 2 at the in-process that inserts ceramic cannula 5, through the internal diameter of guide part 72 and the cooperation of ceramic cannula 5 external diameter, make the optic fibre terminal surface at pottery lock pin 2 middle part can not touch with the one end that ceramic cannula 5 kept away from the base plate to the condition of wearing and tearing or pollution has been avoided taking place because of the touching.

The outer side of the ferrule nut 3 is coaxially provided with a rotating handle 8, and the rotating handle 8 is fixedly connected with the ferrule nut 3.

The connection can be dismantled to twist grip 8 and guide sleeve 7, and guide sleeve 7 passes through twist grip 8 and links to each other with the cutting ferrule nut, and twist grip 8 is close to the tip of guide sleeve 7 and is equipped with the ring channel, and the pipe wall of fixed part 71 cooperatees with the ring channel, can dismantle the connection convenience and set up accessory recognition device in twist grip 8 inside, for example RFID coil for prevent unmatched optical fiber plug mistake and optical fiber flange adapter butt joint, cause equipment damage.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims (4)

1. The utility model provides an outer direction fiber connector, includes optic fibre plug and optic fibre flange adapter, optic fibre plug includes caudal peduncle and ceramic lock pin, the coaxial front end that sets up in the caudal peduncle of pottery lock pin, the outside of caudal peduncle is equipped with cutting ferrule nut, optic fibre flange adapter includes the ceramic intubate of base plate and perpendicular to base plate, and the internal diameter of ceramic intubate cooperatees with the external diameter of ceramic lock pin, and the ceramic intubate outside is equipped with the external screw thread with cutting ferrule nut internal thread matched with, its characterized in that: the ferrule nut outside is equipped with guide sleeve, and guide sleeve comprises fixed part and guide part, and the fixed part is connected in the ferrule nut outside, and the coaxial cover of guide part is in the ceramic lock pin outside, and the one end that the tail handle was kept away from to the ceramic lock pin contracts in guide sleeve's guide part, and the internal diameter of guide part is R, and R satisfies following formula: r < R₂+R₃-R₁Wherein R is₁Is the diameter of the optical fiber, R₂For ceramic socketsInner diameter of the tube, R₃The outer diameter of the ceramic cannula.

2. The externally guided fiber optic connector of claim 1, wherein: and a rotating handle is coaxially arranged on the outer side of the ferrule nut and fixedly connected with the ferrule nut.

3. The externally-guided fiber optic connector of claim 2, wherein: the rotating handle and the guide sleeve are integrally formed by injection molding.

4. The externally-guided fiber optic connector of claim 2, wherein: the rotating handle is detachably connected with the guide sleeve.

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