CN101349784A

CN101349784A - Composite core insert for optical fiber connector

Info

Publication number: CN101349784A
Application number: CNA2007100759888A
Authority: CN
Inventors: 何玫
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-07-16
Filing date: 2007-07-16
Publication date: 2009-01-21
Anticipated expiration: 2027-07-16
Also published as: CN101349784B

Abstract

A combination core for optical fiber connectors comprises a ceramic core and a metal core sleeve, wherein the metal core sleeve is in a cylinder form whose tail is symmetrically provided with positioning slots matched with a tailstock and is provided with step holes internally, the large hole at the head is used to mount the ceramic core in a step shaft form which is provided with a hole for connecting an optical fiber, the heat is a standard plug part, the tail of small diameter is a mounting part, the mounting part of the ceramic core is tightly fit with the large hole of the metal core sleeve integrally. The combination core is formed by tightly combining a ceramic core and a metal core of modified designs integrally, having reasonable structure design, reliable connection and the outer diameter of the prior core and the optical fiber connection method, wherein the metal core sleeve can be tightly combined with the open type tail base to realize the on-site reassembly of optical fiber connectors. The combination core and the optical fiber connector thereof can be applied in an optical transmission system to improve construction efficiency and reduce the cost for laying and mounting optical cables.

Description

The composite core insert that is used for the joints of optical fibre

Technical field

The present invention relates to joints of optical fibre accessory, especially for a kind of composite core insert of the joints of optical fibre, this composite core insert constitutes one whole by ceramic insertion core that improves design and metal lock pin cover wringing fit, can combine the fixing and location of realizing lock pin with the open type tailstock.

Technical background

The lock pin material of the joints of optical fibre such as present common Φ 2.5mm is a pottery.The pottery quality is hard, process various structures difficulty relatively on this lock pin, is difficult to realize the structure of requirement.Simultaneously, conventional as shown in Figure 8 ceramic insertion core 1 ' is when being assembled to the joints of optical fibre, must with the closed caudal peduncle 3 ' interference fit of Fig. 9, needing through pressing machine ceramic insertion core to be pressed into closed caudal peduncle forms an integral body (Figure 10 a), the fixing and location of conventional ceramic insertion core is difficult under the situation of caudal peduncle not having.

Optical cable need in the transmission system of family a kind of can the on-the-spot joints of optical fibre of assembling again, if adopting the ceramic insertion core 1 ' of above-mentioned band optical cable 4 ' (other end of this optical cable 4 ' is connected to connector 5 ') assembles at the scene, because of caudal peduncle 3 ' is closed caudal peduncle, optical cable can't penetrate closed caudal peduncle shown in Figure 10 b; If earlier ceramic insertion core 1 ' and closed caudal peduncle 3 ' are pressed into one by pressing machine, making optical cable 4 ' (other end of this optical cable 4 ' is connected to connector 5 ') pass closed caudal peduncle 3 ' then is connected as Figure 10 a with ceramic insertion core 1 ', but because of closed caudal peduncle bigger, this caudal peduncle can not can not be realized field-installed purpose by other part assembling.

Summary of the invention

For avoiding existing ceramic insertion core above shortcomings in use, the invention provides a kind of composite core insert that is used for the joints of optical fibre, this composite core insert is closely combined with metal lock pin cover by the ceramic insertion core that improves design and constitutes one whole, kept conventional lock pin external diameter and with the optical fiber connected mode, metal lock pin cover can be combined closely with the open type tailstock, realizes that the scene of the joints of optical fibre is assembled again.

The composite core insert that is used for the joints of optical fibre of the present invention, comprise: the metal lock pin cover of ceramic insertion core and installation ceramic insertion core, metal lock pin cover profile is cylindrical, the afterbody symmetry is offered the locating slot that cooperates usefulness with tailstock, shoulder hole is established in inside, and the macropore in the head is used to install ceramic insertion core; The ceramic insertion core profile is a multidiameter shape, in be provided with the hole that connects optical fiber, head is the grafting part of standard, the less rear of diameter is the mounting portion, the mounting portion of ceramic insertion core makes both constitute one whole with the macropore wringing fit that the metal lock pin overlaps.

Composite core insert of the present invention processes the less rear of diameter to the ceramic insertion core afterbody, and then be combined as a whole with the metal lock pin cover of lock pin same diameter, so just solved the difficulty that ceramic segment is difficult to process special construction, and kept ceramic insertion core original the size and with the optical fiber connected mode, composite core insert is with after optical cable is connected, the metal lock pin cover of the composite core insert of band optical cable can be fixed, locate by the open type tailstock easily, and cooperate with other assembly, realize the assembled on site purpose of the joints of optical fibre.

This composite core insert reasonable in design connects reliably, promotes the joints of optical fibre that adopt this composite core insert and formation thereof in optical transmission system, can improve operating efficiency greatly, reduces fiber cable laying, installation cost.

Description of drawings

Fig. 1 is composite core insert one an embodiment stereographic map of the present invention;

Fig. 2,3 is ceramic insertion core stereographic map and the cut-open view of Fig. 1 embodiment;

Fig. 4,5 is metal lock pin cover stereographic map and the cut-open view of Fig. 1 embodiment;

Fig. 6 connects stereographic map behind the optical cable for Fig. 1 composite core insert;

Fig. 7 is that Fig. 6 band optical cable composite core insert combines synoptic diagram with the open type tailstock;

Fig. 8 is a conventional ceramic insertion core stereographic map;

Fig. 9 is the closed caudal peduncle stereographic map of fixing Fig. 8 routine ceramic insertion core;

Figure 10 a, 10b are conventional ceramic insertion core and closed caudal peduncle two kinds of combination synoptic diagram at the scene.

Embodiment

Describe in detail below in conjunction with the embodiment accompanying drawing.

With reference to Fig. 1-5, the composite core insert of this embodiment comprises that the metal lock pin of a ceramic insertion core 1 and installation ceramic insertion core 1 overlaps 2.

It is cylindrical that the metal lock pin overlaps 2 profiles, and the afterbody symmetry is offered and supported the locating slot 22 that tailstock cooperates usefulness, and shoulder hole 21 is established in inside, and the macropore in the head is used to install ceramic insertion core;

Ceramic insertion core 1 profile is a multidiameter shape, in be provided with the hole 14 that connects optical fiber, head 11 is the grafting part of standard, head 11 shapes size is the same with conventional lock pin shape size, the less rear of diameter is mounting portion 12, and macropore 21 wringing fits of the mounting portion of ceramic insertion core 1 and metal lock pin cover 2 make both constitute one whole.

Wherein, metal lock pin cover 2 is copper lock pin cover, stainless steel lock pin cover, aluminium lock pin cover etc.The external diameter of metal lock pin cover and ceramic insertion core equates.The external diameter of composite core insert is other sizes such as Φ 2.5mm, Φ 2.0mm, Φ 1.25mm.The special Machine Design of lock pin cover is convenient to easy to operate, selects for use ceramic insertion core to exchange with common same model connector and uses high conformity.

The effect of composite core insert is to be connected with optical cable, and cooperates with the open type tailstock, thereby assemble at the scene of realizing the joints of optical fibre again.Its assembling process is:

1, make ceramic insertion core 1 overlap 2 with the metal lock pin and combine, because of both are interference fit, the working pressure machine is pressed into, the composite core insert of pie graph 1.

2, composite core insert is connected with optical cable, and connected mode is still the same with conventional lock pin mode.

Fig. 6 connects stereographic map behind the optical cable for composite core insert.Adopt traditional approach to desire to lay in the hole 14 that 4 one of optical fiber are fixed in ceramic insertion core head 1, and optical fiber end grind moulding.According to designing requirement, the other end of desiring to lay optical fiber can connect traditional joints of optical fibre, as: SC/PC or SC/APC type fiber connector etc. also can connect another composite core insert of the present invention etc.

3, the composite core insert of band optical cable at the scene can with the open type tailstock in conjunction with (Fig. 7), need part neck bush, outer liner etc. to cooperate the realization assembled on site with other of the joints of optical fibre again.

Fig. 6 band optical cable composite core insert and open type tailstock assembling are as synoptic diagram 7.Wherein, tailstock 3 is open type square tailstocks 3, and internal run-through is exclusively used in the composite core insert of fixed band optical fiber.This open type square tailstock is by on the snapping, following seat shell fastens to be formed, following shell inside of square tailstock 3 is cylinder 31, the middle part of this cylinder is provided with two convex tendons 33 at interval, one on shell of following seat, two profiles 32 that extend internally out, catching groove 34 is established in following seat two sides, shell other end, seat of honour shell is identical with following hull shape shape, on, following two seat shells are inverted by both corresponding profiles, the catching groove snapping is formed the square tailstock of an internal run-through, the lock pin cover 2 of combinations thereof lock pin presses in the inner chamber that is loaded on square tailstock 3, and corresponding convex tendon 33 lockings in the locating slot 22 of lock pin cover 2 and the square tailstock make to be connected with the composite core insert and the square tailstock 3 that lay optical fiber and to be combined into one.At last, will be connected with the composite core insert that lays optical fiber and the combination of square tailstock, need part neck bush, outer liner etc. to cooperate with other of the joints of optical fibre again and realize assembled on site.

Claims

1, a kind of composite core insert that is used for the joints of optical fibre comprises ceramic insertion core, it is characterized in that:

Also comprise a metal lock pin cover that ceramic insertion core is installed, metal lock pin cover profile is cylindrical, and the afterbody symmetry is offered the locating slot that cooperates usefulness with tailstock, and shoulder hole is established in inside, and the macropore in the head is used to install ceramic insertion core;

Described ceramic insertion core profile is a multidiameter shape, in be provided with the hole that connects optical fiber, head is the grafting part of standard, the less rear of diameter is the mounting portion, the mounting portion of ceramic insertion core makes both constitute one whole with the macropore wringing fit that the metal lock pin overlaps.

2, according to the composite core insert that is used for the joints of optical fibre of claim 1, it is characterized in that: described metal lock pin cover is a copper lock pin cover, or stainless steel lock pin cover, or aluminium lock pin cover.

3, according to the composite core insert that is used for the joints of optical fibre of claim 1 or 2, it is characterized in that: the external diameter of described metal lock pin cover and ceramic insertion core equates.

4, according to the composite core insert that is used for the joints of optical fibre of claim 3, it is characterized in that: the external diameter of described composite core insert is Φ 2.5mm, or Φ 2.0mm, or Φ 1.25mm.