JPS605924B2 - Multi-core optical fiber connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A multi-core optical fiber connector is usually composed of a male metal fitting and a female metal fitting that contain optical fibers on the outside, and the optical fibers are connected by butting them together.

SUMMARY OF THE INVENTION An object of the present invention is to provide a connector that allows multi-core optical fibers to be connected easily and accurately.

Embodiments of the present invention shown in the drawings will be described below.

Figure 1 is a longitudinal side view showing the male and female fittings before they are butted together, Figure 2 is a top view of the male and female fittings with the second holding fittings removed, and Figure 3 is the male fitting. A partial front view of the mold fitting is shown. In each drawing, 1 indicates the entire male metal fitting, and 2 indicates the entire female metal fitting. 3 is a first holding metal fitting, 32 is a second holding metal fitting, 4, 42...45 is a V-shaped groove capable of accommodating the cladding part of the optical fiber, 5, 52 is a V-shaped groove for a guide pin.
In this embodiment, both V-shaped grooves are provided in the first holding fitting 3, and only the V-shaped groove for the guide pin is provided in the second holding fitting 3.
It is provided in 2.

V-shaped groove 5 for guide pin, V that can accommodate more optical fiber
Shaped groove 4. ......The size and position of each groove leading to the V-shaped groove 52 for the guide pin through the groove 45 must be processed with special attention as it has a decisive influence on the transmission characteristics after the optical fiber is connected. It uses an integrated cutter that can process each V-shaped groove at the same time, and processes it on the order of microns. Further, it is preferable that the first holding fittings and the second holding fittings of the male fitting and the female fitting are machined using the same cutting tool.
6, 62...65 are optical fiber claddings, and the V-shaped groove 4.・・・・・・・・・45 Since it is immersed in, there is point contact on the V-shaped side wall.

Reference numerals 7, 72 indicate guide pins having a circular cross section, and are in point contact with the grooves at two points each in the first and second holding fittings.

Note that the guide pin is fixed at the base of the holding fitting after the groove is formed. 8 is a spring that connects the first and second holding fittings and a holding plate 9
It is inserted between.

10 is a cable holder that holds the optical fibers together in case 1.
1 is screwed on.

12 is a self-locking spring attached to the female fitting 2;
The groove for locking the spring 12 is provided in the male metal fitting 1.

Reference numeral 14 indicates a guide frame for the female metal fitting. The optical fiber is provided with the above-mentioned groove in its cladding part, and the groove in the nylon coated part is expanded into a substantially semicircular shape with respect to the groove in the first holding fitting 3, and if necessary, a groove is also provided in the second holding fitting 32. Leave it there. When an optical fiber is placed in such a groove and the first and second holding fittings are joined, the main parts of the male fitting 1 and the female fitting 2 are completed. Therefore, after processing the rest of the spring 8, cable retainer 10, etc., and then facing and butting the male fitting 1 and the female fitting 2, the V-shaped grooves will be provided in accurate positions corresponding to each other. Then, the guide pins 7, 72 of the female metal fitting 1 are guided and inserted into the V-shaped groove of the female metal fitting 2, the two metal fittings 1 and 2 are connected, and the spring 12 enters the pin 13 and is fixed. Then, the holding fittings are butted against each other by the force of the spring 8, and the optical fiber cladding 61...
・Make sure the contact between the end faces of 65 is complete. Note that it is preferable to leave some extra length up to the cable holder 10 so that the optical fiber nylon coated portion can be slightly bent near the holding plate 9. In this way, according to the present invention, optical fibers can be easily manufactured on the order of microns by using a male metal fitting and a female metal fitting in which the optical fiber and guide pin are held by V-shaped grooves provided in accurate positions. It is possible to connect with high accuracy.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a vertical cross-sectional side view showing the male and female fittings according to the embodiment of the present invention before they are butted together, and Figure 2 is a side view showing the male and female fittings with the second holding fittings removed. Top view, 3rd
The figure shows a partial front view of the male fitting.

1...Male metal fitting, 2...Female metal fitting, 3...
・First holding fitting, 32...Second holding fitting, 4,
, 42...45... Optical fiber V-shaped groove, 5, 52...・．． V-shaped groove for guide pin "6,,6
2...65...Optical fiber cladding, 7,,72
...Guidance pin.

hair/candle Younger brother 2 reasons 3 candles

Claims (1)

[Claims] 1. In a connector consisting of a male fitting and a female fitting containing multi-core optical fibers, each fitting is provided with at least a first holding fitting and a second holding fitting, and the first holding fitting has light beams arranged at predetermined intervals. A V-shaped groove capable of accommodating the fiber and V-shaped grooves for guide pins on both sides thereof are provided, and the second holding fitting has at least a V-shaped groove corresponding to the V-shaped groove for the guide pin of the first holding fitting. The V-shaped grooves of each holding fitting are machined simultaneously with an integrated blade, and in the male fitting, the first holding fitting and the second holding fitting have two guide pins and a plurality of light beams. 1. A multi-core optical fiber connector, characterized in that the connector is joined by sandwiching a fiber therebetween, and in a female type metal fitting, a first holding metal fitting and a second holding metal fitting are joined by sandwiching a plurality of optical fibers.