JPS5932981Y2 - Optical fiber connector - Google Patents

Description

[Detailed description of the invention] - The present invention relates to an optical fiber connector.

In automobile wiring, wiring methods that use optical fiber wires for connection lines to each control section have recently been used to prevent malfunctions caused by noise and to reduce weight.
At the stage of its practical application, the technology for connecting optical fibers to each other or to light receiving and light emitting elements is a problem from the viewpoint of how to reduce light transmission loss and obtain uniform optical characteristics. ing.

As a recent technique for connecting optical fiber wires, for example, the one shown in Japanese Utility Model Application Laid-open No. 140452/1983 is known, but in this case, a connection adapter having an axial groove is inserted into the support hole of the connection adapter. The optical fiber wire to be connected is inserted, and then the flow adapter is fitted into the connector main body within the fitting chamber and fixed. The effect of holding it in place is insufficient.

The present invention was made with attention to the above points,
By providing a locking mechanism, the connecting end of the optical fiber wire can be reliably held at a predetermined position based on a simple fitting operation of the connecting adapter to the connector body.

An embodiment of the present invention will be described below with reference to the drawings.

In the drawing, A is a connector body made of flexible synthetic resin;
Reference numeral B designates connection adapters made of flexible synthetic resin that are fitted on the left and right sides of the connector body.

Inside the connector body A, left and right fitting chambers 1, 1 are formed symmetrically with an intermediate connection point 2 interposed therebetween.

That is, the left and right fitting chambers 1, 1 are connected to the connection point 2 in the axial direction.
It narrows in a tapered shape toward , and has circular wall surfaces 3 , 3 .

On the outside of the left and right fitting chambers 1, 1, lock cylindrical portions 6, 6 having large-diameter storage chambers 5, 5 expanding through step portions 4, 4 are formed.

The lock cylinder portions 6, 6 are formed in an elliptical shape, and locking notches 7, 7 for the connection adapter B are formed at opposing positions corresponding to the short diameter portions of the ellipse.

Inside the connection adapter B, a support hole 8 for the main body C1 of the optical fiber wire C is formed in the front, and a support hole 9 for the optical fiber wire C having a reinforcing coating C2 is formed in series at the rear of the support hole 8. There is.

The outer peripheral part of the connection adapter B is formed into a circular shape, with truncated conical fitting cylinder parts 10, 10 in the front and main cylinder parts 11, 1 in the middle.
1. Support cylinder part 13°13 via the collar part 12.12 at the rear
is formed.

In the connection adapter B, a split groove 14 is formed over the entire length in the axial direction.

A locking protrusion 15 for the locking notch 7 of the connector body A is formed on the outer periphery of the main cylinder portion 11, and a tapered guide portion 15a15b is formed on the front and rear sides of the locking protrusion 15.

In the above configuration, the reinforcing plastic coating C2 is removed by a desired dimension from the optical fiber C using a jig, and then inserted into the support holes 8 and 9 of the connection adapter B. Since the connecting adapter B has a groove 14 formed over its entire length, the optical fiber wire C can be easily inserted.

When inserting, the tip of optical fiber C and adapter B
A jig is used to regulate the ends of the fitting cylinder portion 10 so that they are flush with each other on the same plane.

Next, the fixing ring 16 is crimped onto the support cylindrical portion 13, and its protruding piece 16a is bitten into the support cylindrical portion 13 and fixed.

At the time of connection, the two connection adapters B and B are inserted into the connector body A from the left and right sides, and the locking protrusion 15 engages the elastic movable part 17 on the rear side of the notch 7 of the main cylinder part 11. When the fitting cylinder part 10.10 is fitted into the fitting chambers 1, 1 and facing each other when the fitting cylinder part 10.10 is engaged with the locking notch part 7 by climbing over the guide part 15a while being lifted by the shaped guide part 15a. 10.10~Main body C of optical fiber line C9C,,
C, come into contact with each other at connection point 2.

In this state, the elastic movable portion 1 of the main cylinder portion 11
7 comes into pressure contact with the tapered guide portion 15b on the rear side of the locking protrusion 15, so each connection adapter B receives a force in the direction of mutual contact, thereby ensuring the connection state of the optical fiber wire C9C.

To release the connection between the connection adapter B and the connector main body A, press the long diameter part of the elliptical lock cylinder part 6 to bulge the elastic movable part 17 formed in the short diameter part and release the connection adapter B. It is pulled out while relaxing the degree of engagement with the locking protrusion 15.

FIG. 9 shows another embodiment of the present invention, in which the connector main body A' has a fitting chamber 1 to a lock cylinder part 6 formed only on one side, and is connected to the other side via a connecting point 2'. A fitting chamber 18 for a light emitting element is formed, and when the connection adapter B to the optical fiber wire C having the same configuration as described above is inserted into the connector body A', the light emitting element is inserted at the connection point 2'. contact with the tip of the pipe and maintain this state.

19 is a mounting flange. Since the present invention has the above-mentioned precautions, the center of the optical fiber wire can be positioned and fixed at the connection point by the fitting operation of the connection adapter to the connector body, and the locking cylinder part can be biased. It has the feature that the fixed positioning state can be ensured by this.

[Brief explanation of drawings]

Fig. 1 is a front view of the optical fiber connector according to the present invention, Fig. 2 is an axial cross-sectional view of the same, and Fig. 3 is an I of Fig. 2.
I-III line sectional view, Figure 4 is an axial sectional view of the connector body, Figure 5 is a side view of the connector body, Figure 6 is an axial sectional view of the connection adapter, and Figure 7 is the left side of the same as above. 8A and 8B show a front view and a sectional view of the fixing ring, and FIG. 9 shows an axial sectional view of another embodiment. A: Connector body, B: Connection adapter, C: Optical fiber wire, 15...
...Latching protrusion, 17...Elastic movable part.

Claims (1)

[Scope of utility model registration request] A synthetic resin connector main body having a fitting chamber that tapers toward the connection point and a lock cylinder portion on the outside thereof, and a connection having a fitting cylinder portion for the fitting chamber and a main cylinder portion for the lock cylinder portion. The optical fiber wire to be connected is supported and fixed in the support hole of the connection adapter with its tip aligned with at least the tip of the fitting cylinder part, and the connection adapter is fitted into the connector body. At this time, the locking protrusion provided on the outer periphery of the connection adapter engages the locking notch in the lock cylinder, and the end of the elastic movable part of the lock cylinder provided at the rear of the lock cylinder. A connector for an optical fiber wire, characterized in that a portion presses against a tapered guide portion of the locking protrusion to bias the connection adapter toward the connection point.