KR19980034771A - Connector bundle for ultra multi-core optical cable - Google Patents

Abstract

The present invention relates to an optical fiber connector binder that facilitates insertion of an optical cable to a connector when the optical cable is connected, and which can easily connect the connection and the alignment between the ends of each optical cable. In multi-core optical fiber connection, it is easy to align the optical fiber and keep the connection safely during the use period.

The configuration for achieving the object of the present invention has a pair of plugs 10 having a connection hole 12 is inserted into the fiber of the optical cable facing each other, the insertion hole 13 between the connection hole 12 and The alignment pin 40 inserted into the insertion hole 13 to connect the cross section of each plug 10 and the fixing band 50 and the plug 10 for fixing the optical cable 70 from the outside to the same area. It can be achieved by forming a clamper 60 for coupling the optical fiber connector having an elastic snap projection (61) on the slope.

Description

Connector bundle for ultra multi-core optical cable

The present invention relates to an optical fiber connector for connecting an optical cable. More particularly, when the optical cable is connected, the optical cable can be easily inserted into the connector, and the connection and alignment between the ends of each optical cable can be easily and conveniently connected. The present invention relates to an optical fiber connector.

In general, optical communication is to exchange information by transmitting light through an optical fiber, and can transmit tens of thousands of times more information than electric communication using coaxial cable. In addition, since the influence of radio waves and magnetic fields from the outside can be excluded and the information transmission state is good, it is widely used in the communication field, and its use range is gradually expanding to other fields. In recent years, the rapid recognition of informatization has required more optical cable lines. Recently developed optical cables have been used to process a lot of information by producing ribbon-type multi-core optical cables integrating a single optical fiber in a band shape. Such an optical cable is installed at a distance of several hundred kilometers or more, and thus requires connection and branching of the cable in the middle.

However, since optical fibers made of very small diameters (125㎛) are formed inside the optical cables, it is very difficult to connect the cores of the optical fibers to each other, and in the case of multi-core optical cables, it is necessary to connect a plurality of optical fibers at once. More difficult.

Various methods are used for the connection of optical fibers, and representative examples thereof include a fusion splicing method and a mechanical splicing method. The electronic fusion splicing method is a method of melting and connecting optical fibers and is mainly used for permanent connection.In order to achieve this, expensive precision fusion splicing apparatus must be used and power must be used. There is an advantage of high reliability of optical characteristics.

In addition, the mechanical optical cable (70) connector has a number of advantages, such as convenience of work and no additional equipment is required, it can be easily connected even without the power supply, and the reliability of the optical characteristics is almost the same as the fusion splicing. . In order to fundamentally solve the breakage of the optical fiber, it is useful to prevent the generated torsional tension directly applied to the optical fiber cladding and to perform the second clamping on the optical fiber coating. In addition, in the implementation of the double clamping function has a structure in which the primary clamping and the secondary clamping function is operated at the same time.

In the conventional optical fiber connector for optical fiber connection, a special tool is used for the clamping function that adds the necessary force to maintain the alignment when the optical fiber is connected. In addition, in performing the clamping function, when the force acts in the axial direction of the optical fiber, an axial sliding occurs even when the optical fiber is aligned, resulting in a connection failure and an increase in optical loss. As a countermeasure for this, the anti-rolling structure is added to prevent the pressing plate from being pushed in the axial direction. In this case, the additional device for the implementation is small, so it is difficult in terms of manufacturing technology and is weak in structure. It is a challenge that requires great care.

Accordingly, according to such a request, various optical cable connection connectors are disclosed in Korean Patent Application Nos. 95-38970 and 95-71047, and Korean Patent Publication Nos. 95-007219, 95-021929, and 95-010737. It is disclosed in detail.

Therefore, when looking at the connection device of the conventional optical fiber connector, the conventional optical fiber connector is a pair of plugs including a ferrule 11 is inserted into the core of the multi-core optical cable 70, protruding to a predetermined length on one surface (10). And a pair of reinforcing members 22 are installed on both sides of the adapter 20 having the through-hole 21 for accommodating the above-described ferrule 11, and both side walls of the body constituting the hollow rectangular shape. On both ends thereof, a pair of plugs 10 are symmetrically coupled to each other, and a case 30 having an elastic body 31 which couples and fixes the entire connector.

However, as described above, since the conventional optical cable 70 connector uses a screw when coupling to the case, a separate tool is used to fasten the connection, which is cumbersome in the field connection work, and the ferrule in the clamping method. Since the reinforcing member 22, which serves to stabilize the part (11), is formed in the axial direction of the optical cable, there is a drawback of not being able to completely grasp the coating of the optical fiber. Therefore, this structure caused the optical fiber to break due to the torsional phenomenon of the treated optical fiber when time elapsed after the connecting operation.

In addition, since the plug 10 is coupled to the adapter 20, the connector and the adapter 20 is configured to be inserted into the case 30 so that the connector 20 is fixed, so that the connector is held in a separate state in order to be connected. Requires 30.

In other words, there is a problem in that the plug 10 is installed in a place for connecting the multi-core optical fiber to be bulky more than necessary in binding the plug 10 to each other.

An object of the present invention is to facilitate the alignment of the most important optical fiber in the multi-core optical fiber connection, and to maintain a secure connection during the use period, and to connect and disconnect the connectors to each other, easy connection and separation of optical fiber connector To provide a sieve.

1 is an exploded perspective view of an optical fiber connector according to the prior art.

Figure 2 is an exploded perspective view of the optical fiber connector according to the present invention.

Figure 3a is a plan sectional view of an optical fiber connector according to the present invention.

Figure 3b is a perspective view of the fixing band according to the present invention.

3C is a side cross-sectional view of an optical fiber connector according to the present invention.

*** Description of the main parts of the drawing ***

10: Plug 11: Ferrule

12: Connector 13: Alignment pin insertion hole

20: adapter 21: through

22: reinforcing member 30: case

31: elastic body 40: alignment pin

50: fixing band 60: clamper

61: snap projection 70: optical cable

71: Insertion tool 72: Alignment block

The structure of the optical fiber connector for achieving the object of the present invention,

A pair of plugs having a connection hole into which fibers of the optical cable are inserted to face each other, and having insertion holes between the connection holes;

Alignment pins inserted into the insertion holes to connect end faces of the respective plugs;

A fixing band for fixing each optical cable from the outside;

It is formed as the same area as the plug can be achieved as a clamper for coupling the optical fiber connector having an elastic snap projection on the slope.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 2, the circular ultra-concentric optical cable 70 in the plug 10 is inserted into both insertion holes in the rear of the plug 10, and the external cable is fixed by the fixing band 50. In addition, the alignment pin 40 is inserted into the plug 10 by the alignment pin insertion hole 13 at the front of the plug 10, and the optical fiber connector coupling clamper 60 is fastened to the upper portion of the optical fiber connector. It is.

3A shows an optical fiber connector according to the present invention in a plan view, in which an optical cable 70 inserted into a plug 10 is bisected about an alignment pin 40 and aligned by an insertion tool 71. . And the optical fiber aligned by the block 72 formed in the insertion tool 71 is connected to the other side in the connection hole (12).

3B shows a fixing band for fixing each optical cable from the outside. Rings for inserting optical cables are formed at both sides of the band 50, and each ring is integrally connected to each other.

3C is a side cross-sectional view of the optical fiber connector according to the present invention, in which the insertion tool 71 and the alignment block 72 constituting the interior of the connection hole are enlarged.

Inside the connecting hole, an optical fiber insertion tool having a lattice-shaped alignment block 72 having the same position as the connecting hole is provided.

Therefore, the operation of the present invention configured as described above is as follows.

First, a circular ultra-core optical cable 70 in the plug 10 is inserted into both insertion holes in the back of the plug 10.

And the insertion hole formed in the center of the front of the plug 10 to facilitate the connection with the optical cable 70, the alignment pin 40 inserted into the plug 10 inserted into the plug 10 of the other side Align the optical cable 70.

The aligned optical fiber bundle is again aligned as a whole by the hole of the insertion tool 71 and aligned to coincide with the position of the plurality of connecting holes 12 formed by the alignment block 72 having a lattice inside the insertion tool 71. It is connected to the optical cable 70 of the plug.

The optical fiber connector coupling clamper 60 covers the upper portion of the plug 10 and presses the entire optical fiber connector at a uniform pressure from all directions by snap projections.

The coupling clamper 60 is formed with the same area as the plug to have elastic snap protrusions on the slopes and to resist the torsional pressure that affects the optical fiber connector from the outside.

In addition, the clamper 60 can be removed manually when detaching the optical fiber connector.

Therefore, in the present invention, the alignment of the optical cable 70 is made by the alignment pin 40 and the insertion tool 71 in the plug 10, so that the connection state of the ultra-multi-optical optical cable 70 of tens or more depths is improved. In addition, the optical fiber connector coupling clamper 60 having an elastic snap protrusion on the slope presses the entire optical fiber connector at a uniform pressure from all directions, thereby having a resistance against torsional pressure that affects the optical fiber connector from the outside. When the phenomena in the direction occurs, the connection failure of the optical cable 70 and the increase in the optical loss can be prevented.

Claims (1)

A pair of plugs (10) having a connection hole (12) into which fibers of the optical cable are inserted to face each other, and having an insertion hole (13) between the connection holes (12); An alignment pin (40) inserted into the insertion hole (13) to connect end surfaces of the respective plugs (10); A fixing band 50 for fixing the optical cables 70 from the outside; It is formed in the same area as the plug 10, the clamping member 60 for coupling the optical fiber connector having an elastic snap projection 61 on the slope, and the insertion tool 71 and the inside to facilitate the insertion of the ultra-concentric optical cable into the ferrule A connector bundle for an ultra multi-core optical cable, comprising an alignment block having a lattice.