CN202563126U

CN202563126U - FC optical fiber quick connector

Info

Publication number: CN202563126U
Application number: CN201220064521XU
Authority: CN
Inventors: 沈继茂
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-23
Filing date: 2012-02-23
Publication date: 2012-11-28
Anticipated expiration: 2022-02-23

Abstract

An FC optical fiber quick connector comprises a housing, a fixed sleeve barrel which is sleeved onto an outer side of the housing, and a front sleeve barrel and a rear sleeve barrel which are sleeved onto the outer side of the housing and are respectively positioned at a front side of the fixed sleeve barrel and a rear side of the fixed sleeve barrel. A ceramic ferrule is fixed at a front end of the housing. An optical fiber channel for accommodating a pre-buried optical fiber and an optical fiber inserted from the outside are provided in the housing. The front sleeve barrel is fixed at a front end outer side of the housing through a screw thread. A tail casing is fixed at an outer side of the rear sleeve barrel through a screw thread. A gap is provided between a front end of the tail casing and the fixed sleeve barrel. A fixed block is sleeved onto an outer side of the fixed sleeve barrel and the tail casing, and an inner surface of the fixed block has a projection which is clamped in the gap. The optical fiber quick connector has a simple structure, is convenient to process and assemble, greatly improves the production and assembling efficiency, has low requirement for machining accuracy, is convenient for realizing the quick field installation and fixing of the optical fiber connection, and effectively improves the reliability of optical fiber connection and the service life of the optical fiber connector.

Description

The FC optical fiber quick connector

Technical field

The utility model relates to a kind of joints of optical fibre, particularly relates to a kind of FC optical fiber quick connector.

Background technology

Along with the continuous development of optical communication technique, the user's request bandwidth is increasingly high, optical fiber register one's residence (FTTH) become the inexorable trend of development.Confirm that with the length of optical cable is very difficult optical cable two terminal adapters must be made at the scene because of registering one's residence, the quick termination in working-yard has just become requisite construction method.The quick termination mode of existing optical cable has two kinds, and first kind is to adopt optical fiber matching fluid, and the ceramic insertion core preformed fibers directly docks with optical cable and optical fibres; Its shortcoming is the matching fluid limited service life; Be not suitable for long-term connection, the another kind of fiber cut insertion ceramic insertion core that adopts is directly fixing, and the method is difficult to reach consistance because of cutting end face and length; Cause quality of connection unstable easily, transmission signals loss etc.

The present joints of optical fibre are complex structures all generally, and on fiber alignment point, always are easy to generate variety of issue, cause the connection instability and the junction loss of optical fiber connecting portion.

Summary of the invention

The utility model technical matters to be solved provides the stable and quick installation FC optical fiber quick connector of a kind of connection.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of FC optical fiber quick connector; Comprise housing, be placed in the fixed muffle of hull outside; And front sleeve that is placed in hull outside and lays respectively at the fixed muffle front side and the back sleeve that is positioned at the fixed muffle rear side; It is characterized in that: the front end of said housing is fixed with ceramic insertion core; Said ceramic insertion core internal fixation has pre-buried optical fiber, has the optical-fibre channel of ccontaining pre-buried optical fiber and the extraneous optical fiber that inserts in the said housing, also is with a fixture between said housing and the fixed muffle and is used for the position of positioning housing in fixed muffle; The rear end of said back sleeve is anchor clamps; Said front sleeve is fixed on outside the front end of housing through screw thread, and the outside of said front sleeve also is with a fore shell, and the outside of said back sleeve also is fixed with a tail shell through screw thread; Have the gap between the front end of said tail shell and the fixed muffle, a fixed block is placed in to have projection on the inside surface of the outside and this fixed block of said fixed muffle and tail shell and is stuck in this gap.

Preferably; Said fixed muffle comprises that each other engaging up and down is first fixed muffle and second fixed muffle of a cylindrical body; The front end of said first fixed muffle has external thread, and the external thread that the rear end of said front sleeve has internal thread and this first fixed muffle interconnects.

For the ease of processing and installation; Preferably; Said housing comprises first housing and second housing; The first, second portion and the third part that connect successively before and after the first, second portion and the third part that connect successively before and after said first housing comprises, said second housing also comprise, the first of said first housing is a cylindrical body; The second portion of said second housing is a cylindrical body; The second portion of said first housing is covered in the first of this second housing and is combined to form a cylindrical body, and the third part of said first housing is passed the second portion of this second housing and is covered on the third part of this second housing and is combined to form a cylindrical body, and has a V-type groove on the upper surface of the first of this second housing.

In order to make these joints of optical fibre have elasticity, the inboard of said back sleeve has an inside outstanding step surface, and a spring is placed in the outside of this housing, and two ends are butted between the second portion rear end of this step surface and this second housing.

Compared with prior art; The advantage of the utility model is this optical fiber quick connector; Not only simple in structure and processing and the assembling all very convenient, improved production and efficiency of assembling greatly, and requirement on machining accuracy is lower; Be convenient to realize the quick on-the-spot installation that optical fiber connects and fix, improved the reliability of optical fiber connection and the serviceable life of the joints of optical fibre effectively.

Description of drawings

Fig. 1 is the stereographic map of the utility model optical fiber quick connector.

Fig. 2 is the cut-open view along A-A line among Fig. 1.

Fig. 3 is the cut-open view along B-B line among Fig. 2.

Fig. 4 is the exploded sketch of the optical fiber quick connector of the utility model.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Shown in Fig. 1-4, these FC joints of optical fibre comprise fore shell 9, tail shell 30, and fixed muffle is positioned at the front sleeve 6 of fixed muffle and fore shell 9 and tail shell 30, parts such as back sleeve 7 and first, second housing and fixture 3.

Shown in Fig. 2-4, said first housing 1 and second housing 2 interfix up and down and form the passage of a fixed fiber.As shown in Figure 4; This second housing 2 is divided into first 21, second portion 22 and the third part 23 that connects successively; Wherein first 21 is half cylindrical body; Have V-type groove 211 on the upper surface of this first 21 and supply the optical fiber insertion fixing, second portion 22 is the parts of a tubular, and third part 23 is the parts of half tubular.This first housing 1 also comprises first 11, second portion 12 and the third part 13 that connects successively; Wherein first 11 is a cylinder-like part; The front end of this first 11 is used to insert ceramic insertion core 8; This second portion 12 engages up and down with the first 21 of second housing 2 and is combined to form a cylindrical body, and the third part 13 of this first housing 1 is inserted from the second portion 22 of this second housing 2 and engaged each other with the third part 23 of this second housing 2 and is combined to form a cylindrical body.The rear end that the second portion 22 of this second housing 2 is stuck in the second portion 12 of this first housing 1 interfixes first housing 1 and second housing 2.The housing that this first housing 1 and 2 formation one of second housing have optical-fibre channel; This housing front end is a ceramic insertion core 8; Be inserted with pre-buried optical fiber 100 in the ceramic insertion core 8; And the rear end of this pre-buried optical fiber 100 is positioned at the V-type groove 211 of this second housing 2, and the extraneous optical fiber that the optical fiber that this V-type groove is used for ccontaining pre-buried optical fiber and rear end inserting inserts the rear end interconnects with pre-buried optical fiber to be aimed at.

The outside of this housing is with a fixture 3, and an end of this fixture 3 has an outstanding laterally protruding circle 31 makes between the fixed muffle of this housing and hull outside the maintenance spacing distance fix.And, also be with front sleeve 6 and back sleeve 7, and the front end of back sleeve 7 is inserted in this fixed muffle rear end in the front and back of the outside of this housing fixed muffle.This fixed muffle comprises first fixed muffle 4 and second fixed muffle 5 that combines between the higher and lower levels into tubular each other, and the internal thread 61 that the front end of said first fixed muffle 4 has external thread 41 and front sleeve 6 rear ends mutually combines.This first fixed muffle 4 is the cylindrical body that a center section has breach; And front-end and back-end are all complete; Second fixed muffle 5 is covered in the part of these first fixed muffle, 4 intercalary delections; This second fixed muffle 5 and first fixed muffle 4 interconnect forms a cylindrical body, is convenient to processing and installation.

The inboard of said back sleeve 7 has a step surface 71; One spring 20 is placed in hull outside and two ends and is butted between the rear end of second portion 22 of step and this second housing 2 of these back sleeve 7 medial surfaces, makes this back sleeve 7 be placed in the outer-end rear side of housing and has elasticity between the two.The rear end of back sleeve 7 is two plate clamps 72; The outside of back sleeve 7 has screw thread 73; Tail shell 30 is placed in the outside of this back sleeve 7 and passes through screw thread 73 and is connected with back sleeve 7, and extrusion clamp 72 makes the skin of extraneous optical fiber can be fixed in back sleeve 7 and the tail shell 30 to the inside.Also have a gap between the front end of this tail shell 30 and the fixed muffle, have projection 101 on the inside surface of fixed block 10 and be stuck in this tail shell 30 and fixed muffle and fixed block 10 are interfixed.Said fixed block 10 is positioned at the fixed muffle and tail shell 30 outsides, and also is with a fore shell 9 in these front sleeve 6 outsides.The front end of ceramic insertion core 8 stretches out in this front sleeve 6 and front end is inserted with protective sleeve 40.

This optical fiber quick connector; Not only simple in structure and processing and the assembling all very convenient; Production and efficiency of assembling have been improved greatly; And requirement on machining accuracy is lower, is convenient to realize the quick on-the-spot installation that optical fiber connects and fix, and has improved the reliability of optical fiber connection and the serviceable life of the joints of optical fibre effectively.

Claims

1. FC optical fiber quick connector; Comprise housing, be placed in the fixed muffle of hull outside; And be placed in hull outside and lay respectively at the front sleeve (6) of fixed muffle front side and be positioned at the back sleeve (7) of fixed muffle rear side; It is characterized in that: the front end of said housing is fixed with ceramic insertion core (8); Said ceramic insertion core (8) internal fixation has pre-buried optical fiber (100), has the optical-fibre channel of ccontaining pre-buried optical fiber (100) and the extraneous optical fiber that inserts in the said housing, also is with a fixture (3) between said housing and the fixed muffle and is used for the position of positioning housing in fixed muffle; The rear end of said back sleeve (7) is anchor clamps (72); Said front sleeve (6) is fixed on outside the front end of housing through screw thread, and the outside of said front sleeve (6) also is with a fore shell (9), and the outside of said back sleeve (7) also is fixed with a tail shell (30) through screw thread; Have the gap between the front end of said tail shell (30) and the fixed muffle, a fixed block (10) is placed in to have projection (101) on the inside surface of the outside and this fixed block (10) of said fixed muffle and tail shell (30) and is stuck in this gap.

2. FC optical fiber quick connector as claimed in claim 1; It is characterized in that: said fixed muffle comprises that each other engaging up and down is first fixed muffle (4) and second fixed muffle (5) of a cylindrical body; The front end of said first fixed muffle (4) has external thread (41), and the external thread that the rear end of said front sleeve (6) has internal thread (61) and this first fixed muffle (4) interconnects.

3. according to claim 1 or claim 2 FC optical fiber quick connector; It is characterized in that: said housing comprises first housing (1) and second housing (2); The first (11), second portion (12) and the third part (13) that connect successively before and after said first housing (1) comprises; The first (21), second portion (22) and the third part (23) that connect successively before and after said second housing (2) also comprises; The first (11) of said first housing (1) is a cylindrical body; The second portion (22) of said second housing (2) is a cylindrical body; The second portion (12) of said first housing (1) is covered in the first (21) of this second housing (2) and is combined to form a cylindrical body, and the third part (13) of said first housing (1) is passed the second portion (22) of this second housing (2) and is covered on the third part (23) of this second housing (2) and is combined to form a cylindrical body, and has a V-type groove (211) on the upper surface of the first (21) of this second housing (2).

4. FC optical fiber quick connector as claimed in claim 3; It is characterized in that: the inboard of said back sleeve (7) has an inside outstanding step surface (71); One spring (20) is placed in the outside of this housing, and two ends are butted between second portion (22) rear end of this step surface (71) and this second housing (2).