CN2515691Y

CN2515691Y - Optical fibre connector FC/SC rail stretching resistance structure

Info

Publication number: CN2515691Y
Application number: CN 01258634
Authority: CN
Inventors: 王明载
Original assignee: Dongguan Ahoku Electronic Co
Current assignee: Dongguan Ahoku Electronic Co
Priority date: 2001-12-14
Filing date: 2001-12-14
Publication date: 2002-10-09
Anticipated expiration: 2011-12-14

Abstract

The utility model relates to an optical fiber connector, in particular to an anti-tensile strength structure of the FC/SC rear part of the optical fiber connector. The technical proposal is that an inlaying grafting pipe that shares the same shaft with an inner support is additionally arranged on the rear part of the inner support for fixing and inserting a rear seat inside the present optical fiber connector. With such design, when the connector is assembled with the optical cable with a tensile wire, the inlaying grafting pipe can be directly inserted into the outer wrapper of the optical cable. When the optical fiber and the connector are assembled, the overlapped position of the inlaying grafting pipe and the outer wrapper is directly pressed tightly by a crimping pipe so that the outer wrapper of the optical cable is tightly attached to the inlaying grafting pipe. And when crimped, the optical fiber will not be crushed or broken apart as the inlaying grafting pipe protects the optical fiber.

Description

Joints of optical fibre FC/SC afterbody stretching resistance structure

Technical field:

The utility model relates to the joints of optical fibre, refers in particular to the stretching resistance structure of joints of optical fibre FC/SC afterbody.

Background technology:

Accompanying drawing 1 is depicted as the three-dimensional exploded view of existing fiber connector; the tail end position (seeing shown in the accompanying drawing 2) of bearing 01A in it; promptly anti-pull spring crimping position 12 only can crimping optical cable 10 anti-pull spring 102 (seeing shown in the accompanying drawing 3); for the exoperidium 101 of optical cable 10 without any the function of firmly grasping; so can't do appropriate protection to the optical cable on the connector; the structure of optical cable is seen shown in the accompanying drawing 4; be broadly divided into exoperidium 101; anti-pull spring 102; endoperidium 103; fiber outer layer 104; optical fiber core 105; wherein the effect of exoperidium 101 is to coat anti-pull spring 102 and other optical fiber tissue; if coat bad; to cause interior tissue to expose, and reduce the performance of anti-pull spring 102.

In addition; see shown in the accompanying drawing 3; the interior bearing 01A of existing fiber connector; its anti-pull spring 102 compresses with aluminium hydraulic pressed connecting pipe 22; because of optical fiber exoperidium 101 and anti-pull spring 102 are all flexible material,, has suitable ductility because of exoperidium 101 again so aluminium hydraulic pressed connecting pipe 22 can't be caught exoperidium 101 really; so reach the outer end of aluminium hydraulic pressed connecting pipe 22 easily, thereby lose the function of the whole optical fiber of protection.

See shown in the accompanying drawing 3, during the interior bearing 01A assembling of existing fiber connector, after exoperidium 101 gets loose out aluminium hydraulic pressed connecting pipe 22,,, cause fibercuts so cause the bending of optical fiber easily at the tail end position of aluminium hydraulic pressed connecting pipe 22 because anti-pull spring 102 can't bearing radial force.

When the part of existing fiber connector docks, see shown in the accompanying drawing 1 that its contact pin 42 can be drawn back, so contact pin tailstock 41 also must shrink back, optical fiber also should axially retreat thereupon, and existing fiber connector design is because of the relation of coating, cause optical fiber to retreat sometimes after, have a bit crooked, and optical signal transmission fiber is to utilize total reflection principle, the bending of optical fiber can change the incident angle of light signal, makes the total reflection successfully of a part of light, causes deterioration in quality.

Existing fiber connector lift heavy value is very little, and very unstable.At present for solving this shortcoming of existing fiber connector, mostly adopt epoxy glue or Instant cement etc. with exoperidium 101 and aluminium hydraulic pressed connecting pipe 22 cementations, but because exoperidium 101 is a soft material, and aluminium hydraulic pressed connecting pipe is a rigid material, so behind environmental testing (negative 40 degree Celsius are to 80 degree), aluminium hydraulic pressed connecting pipe 22 has not had cementation closely with exoperidium 101, and the shortcoming of the joints of optical fibre that makes no insertion pipe is again from new generation.

Summary of the invention:

The purpose of this utility model is with regard to being at the weak point of existing fiber connector and provide a kind of afterbody to have the joints of optical fibre of stretching resistance structure.

The utility model is achieved by the following technical solution: the bearing tail end presses the position of anti-pull spring to be convexly equipped with the coaxial insertion pipe of moulding one in the joints of optical fibre, the external diameter of this insertion pipe is less than the external diameter of pressing anti-pull spring position, can directly insert in the endoporus of exoperidium, the endoporus of insertion pipe can make the endoperidium of optical fiber directly penetrate simultaneously.

The utility model can overcome the various shortcoming of the existing joints of optical fibre fully, and structure is very simple.

Description of drawings:

Accompanying drawing 1 is the three-dimensional exploded view of existing fiber connector

Accompanying drawing 2 is the sectional view of optical fiber

Accompanying drawing 3 is the interior bearing of existing fiber connector and the planimetric map of optical cable assembling

Accompanying drawing 4 is the structural representation of bearing in the existing fiber connector

Accompanying drawing 5 is a three-dimensional exploded view of the present utility model

Accompanying drawing 6 is the structural representation of bearing in the utility model

Accompanying drawing 7 is the planimetric map of interior bearing of the utility model and optical cable assembling

Embodiment:

See shown in the accompanying drawing 5-7, in the utility model the tail end of bearing 01 be convexly equipped with form one with the coaxial insertion pipe 11 of interior bearing 01 tail end, the external diameter of this insertion pipe 11 less than the external diameter of interior bearing 01 tail end and and with the endoporus formation immovable fitting of optical cable exoperidium 103.

The utility model is seen shown in the accompanying drawing 7, except can firmly compressing the anti-pull spring 102 by aluminium hydraulic pressed connecting pipe 21 when assembling, by insertion pipe 11, also can really exoperidium 101 be compressed with aluminium hydraulic pressed connecting pipe 21 simultaneously, guarantee that anti-pull spring 102 does not expose, thereby the ingredient of optical fiber is played a role effectively.

Since add insertion pipe 11, when making assembling and attrition process, the protection that optical cable 10 improves.

During use, because the internal diameter of insertion pipe 11 can be a bit larger tham 0.9 millimeter endoperidium 103 of optical fiber, so endoperidium 103 can obtain higher degree of freedom.

After the tail end of interior bearing 01 adds this insertion pipe 11, also increased the distance that anti-pull spring 102 and interior bearing 01 compress simultaneously, promptly be all the distance that compresses of anti-pull spring 102 to insertion pipe 11 from the anti-pull spring crimping position 12 of interior bearing 01, make anti-pull spring 102 more firm, increase the stability of product, but the overall dimensions of product does not increase.

Except above-mentioned advantage, the utility model makes connector that the lift heavy value is reached more than 15 kilograms because of the protection of insertion pipe 11 is arranged.

Claims

1. joints of optical fibre FC/SC afterbody stretching resistance structure, include: interior bearing, it is characterized in that: interior bearing tail end is convexly equipped with and forms an insertion pipe coaxial with it, and the external diameter of this insertion pipe forms immovable fitting less than the external diameter of interior bearing tail end and with the endoporus of optical cable exoperidium.