JPH04186308A - Multicore fiber connector - Google Patents

Abstract

PURPOSE:To eliminate inconvenience of dropping or losing as well as prevent a condition where only an engaging pin is left at the time of disconnection or connection of a connector from occurring by fixing an engaging pin to an engaging pin holder, and thereby forming an integrated adaptor. CONSTITUTION:The opposed edge parts positioned in the width direction, of a face side which is abutted against a ferrule 3, which is mounted on each end part of two optical fiber tape core conductors 4 to be connected, at the time of connecting the ferrule 3 are cut in the form of hexadron to thereby form cut parts 31. An engaging pin holder 1 is composed of pin fixing boss parts 11 and a connection part connecting them, and engaging pins 2 are fixedly inserted into the holder 1. In connection, this holder 1 is positioned at a central part and the ferrule 3 is pushed therein from the opposed sides. It is thus possible to realize provision of a multicore optical fiber connector which is not liable to drop or be lost.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a multi-core optical fiber connector, and more specifically, to a multi-core optical fiber connector, which eliminates the risk of mating pins falling off and being lost during connector separation or connection work. This invention relates to a core optical fiber connector.

[Conventional technology]

As a multi-core optical fiber cable, an optical fiber ribbon is widely used, in which a plurality of optical fibers are arranged side by side in parallel and are covered and fixed as a whole in the form of a tape. A well-known multi-core optical fiber connector used for connection is one in which fitting pins are used to position the optical fibers so that their respective axes coincide accurately.

This conventional connector (not shown) has two parallel mating pin holes connected to ferrules fixed to the respective ends of two optical fiber tape cores to be connected. When the ferrules are connected, the ferrules are bored in a straight line so as to pass through them in common, and a mating pin is inserted into each of these mating pin holes so as to pass through the mating pin holes of both ferrules in a straight line. This structure allows for accurate positioning of the ferrule.

[Problem to be solved by the invention]

However, in this conventional multi-core optical fiber connector, the mating pins escape from either of the mating pin holes of both ferrules when the connector is separated or connected, so it does not fall out of the operator's hands. It has the disadvantage of being easy to use and therefore easy to lose.

If the mating pin falls onto a workbench, etc., it is necessary to clean it with alcohol solution every month while applying ultrasonic vibration to ensure a good connection of the multi-fiber optical fiber connector. In order to maintain the characteristics, a very careful and careful work was required, and there was an inconvenience that the workability of the connection work was unavoidably lowered.

Means for Solving the Problem] The present invention was made to solve the above-mentioned problem, and provides a multi-core optical fiber connector that is difficult to fall or lose. A pair of ferrules to be connected in a multi-core optical fiber connector are formed with cutouts at both end corners, leaving a butt connection part located approximately in the middle of the ferrules in the width direction and holding the optical fibers to be connected inside. A fitting pin holder having a shape corresponding to the notch and filling the notch is separately provided, and a predetermined fitting pin is fixed to this so as to protrude from both sides, and when the ferrule is connected, this fitting pin holder is provided. A pin holder is interposed between the pair of ferrules to supplement these notches, and the fitting pin is inserted into the fitting pin hole of each ferrule. It is a core optical fiber connector.

Further, in the present invention, a mating pin is fixed to one ferrule of the multi-core optical fiber connector so as to protrude by a predetermined length toward the connection side, and the mating pin is inserted into the other ferrule. The present invention is a multi-core optical fiber connector characterized by forming a matching pin hole.

The present invention also provides an adapter for a multi-core optical fiber connector, comprising a pair of mating pins fixed to a mating pin holder in parallel with each other and protruding equally by a predetermined length on both sides of the mating pin holder. be.

[Effect]

Since the mating pins are fixed to the mating pin holder and assembled into one adapter, they are less likely to fall during disconnection or connection work of the connectors, and are therefore less likely to be lost.

In addition, the mating pin is fixed to one of the ferrules, making it difficult to fall when disconnecting or connecting the connector.
Therefore, it is also difficult to lose.

〔Example〕

The first embodiment of the 20-shot invention will be described with reference to FIG.

The ferrules 3.3 attached to each end of the two optical fiber tape cores 4.4 to be connected are cut out in the shape of a rectangular hexahedron on both widthwise edges of the surfaces that face and butt against each other during connection. This forms a notch 31, and a portion including the optical fiber core at the center in the width direction is left as a butt connection portion 32. An end face 4A of the optical fiber line is exposed at the end face of this butt connection portion 32.

A fitting pin holder that has pin fixing boss parts 11 at both ends that have a rectangular hexahedral shape and volume that roughly correspond to the two opposing notches 931, and the pin fixing boss parts 11 are connected by a connecting part 12. A fitting pin 2 is fixed to each pin fixing boss part 11 in parallel with each other so as to protrude in both directions from the pin fixing boss part 11. This means that there are two types of connection adapters.

When connecting the connector, insert the fitting pin holder 1 in the center and push the ferrules 3.3 from both sides through the fitting pin holes so that the fitting pins 2 pass through, thereby butting and connecting both ferrules 3.3. The portions 32 are brought into close contact with each other, and then a pair of presser springs 5, 5 are applied in a direction that draws the ferrules 3, 3 toward each other to fix them, as in the conventional case.

In terms of dimensions, it is absolutely imperative that the total dimension in the length direction of the two notches 31 be slightly larger than the dimension in the same direction of the pin fixing boss portion 11 of the fitting pin holder 1 (there is a gap g). Although necessary, this is a butt connection 9
This is to ensure and guarantee the close contact of 32.

Next, another embodiment will be described with reference to FIGS. 3 and 4.

Assuming that a pair of ferrules to be connected are denoted by reference numeral 6.7, a fitting pin 8 is fixed to one of the ferrules 6 using, for example, adhesive.

For this purpose, as the fitting pin 8, a specially shaped fitting pin having a head portion 8A as shown in Fig. 4 is used. Drill a counterbore with a diameter larger than the pin diameter at the entrance, fit the head part 8A into this counterbore, insert it from the counterbore side so that it does not protrude outside, make it protrude to the opposite side, and bond. It is fixed.

Then, the other ferrule 7 (which has the same shape as the conventional one) is inserted into the fitting pin hole 9 so that the fitting pin 8 can be inserted to connect the ferrule.

〔Effect of the invention〕

According to this invention, the mating pin is fixed to the mating pin holder to form one adapter, or to one of the ferrules, so that only the mating pin can be used when disconnecting or connecting the connector. There is an advantage that there is no longer a need for a single item, and there is almost no inconvenience such as dropping or losing the item.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the present invention, FIG. 2 is a perspective view showing a connection adapter used in this embodiment, FIG. 3 is a sectional view showing another embodiment of the invention, and FIG. The figure is a perspective view showing a fitting pin used in this embodiment. DESCRIPTION OF SYMBOLS 1... Fitting pin holder, 2.8... Fitting pin, 3.6.7... Ferrule, 4... Optical fiber tape core, 9... Fitting bottle hole.

Claims (1)

[Claims] 1. A butt connection part (3, 3) for a pair of ferrules (3, 3) to be connected in a multi-core optical fiber connector, which is located approximately in the middle in the width direction and holds the optical fiber to be connected inside. 3
A notch (31) is formed at both end corners, leaving 2), and a fitting pin holder (1) having a shape corresponding to the notch (31) to fill and shape the notch is provided separately. Predetermined fitting pins (2) are fixed so as to protrude from both sides, and when the ferrules (3, 3) are connected, the fitting pin holder (1) is interposed between the pair of ferrules and these notches are inserted. In addition to supplementing the part, its fitting pin (2)
A multi-core optical fiber connector, characterized in that it is inserted into a mating pin hole of each ferrule. 2. Fix the mating pin (8) to one ferrule (6) of the multi-core optical fiber connector to be connected so that it protrudes a predetermined length toward the connection side, and fix the fitting pin (8) to the other ferrule (7). Fitting pin hole (9) into which the fitting pin (8) is to be inserted
A multi-core optical fiber connector characterized by forming. 3. A plurality of mating pins comprising a pair of mating pins (2) fixed to a mating pin holder (1) in parallel with each other and protruding equally by a predetermined length on both sides of the mating pin holder (1). Adapter for core optical fiber connector.