JPH046001Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is for connecting two optical fibers during measurement, for example, by arranging the two fibers in a V-groove with their end faces butting each other. Therefore, the present invention relates to a V-groove type fiber connector for connecting both optical fibers.

"Prior Art" In a conventional V-groove fiber connector, as shown in FIG. 5, a V-groove plate 12 is arranged on a base 11, and two V-groove plates 12 are butted at the center thereof. A fiber V-groove 13 in which the fiber to be processed is disposed, and larger holding V-grooves 14 and 15 are formed in a straight line on both sides of the fiber V-groove 13. A core wire is arranged.

On one side of this V-groove plate 12, the holding piece 16,
17 and 18 are attached to the base 11 in a line so as to be rotatable about an axis parallel to the direction in which the V-groove extends. These holding pieces 16, 17, and 18 are provided with screws 21, 22, and 23, respectively, which are biased by coil springs. It is designed so that it can be rotated and tightened within a screw formed in the base 11.

Conventionally, in order to make a connection using this V-groove type fiber connector, two fibers to be connected to each other are placed in the fiber groove 13 so as to butt each other, and in this state, the presser clamps on both sides are Close the pieces 16 and 18, lightly press the fiber wire or core fiber against the V-groove plate 12, and tighten the screw 2.
1 and 23 are temporarily held, and in this state, the positions of the fibers are further adjusted so that they abut against each other, and matching liquid is dripped onto the abutting end surfaces of the fibers, and then the center presser piece 17 is rotated. The V-groove was closed and the connection portion was sufficiently fixed with the screw 22.

In this way, in the past, three screws 21, 2
It is necessary to tighten the screws 2 and 23 one by one, which is relatively troublesome, and is not suitable for quickly performing a large number of measurements.

"Means for solving the problem" In this invention, a connecting V-groove plate is held on the base, and three holding pieces are provided on one side of the plate, which is conventional. However, in this invention in particular, a fixed piece is attached to the free end of the central presser piece, and when this central presser piece, that is, the third presser piece, is closed in the V groove,
Means is provided for fixing or releasing the fixing piece to the base, which is configured to press the first and second holding pieces on both sides against the base by the fixing piece. .

In this way, according to this invention, by closing the third holding piece in the center and fixing the holding piece by the fixing means, the first and second holding pieces on both sides are also attached to the base at the same time. It is stably fixed, meaning it only needs to be tightened once to the base, which is much simpler than the conventional method of tightening with three screws.

"Embodiment" FIG. 1 shows an embodiment of this invention, and parts corresponding to those in FIG. 5 are designated by the same reference numerals. That is, in this example as well, the V-groove plate 12 for connection is mounted on the base 11, and further a presser piece is attached to one side of the plate, and a third plate is attached to the center of the plate.
A presser piece 17 is provided, and first presser pieces 1 on both sides thereof
6. The arrangement of the second holding pieces 18 is the same as in the prior art, and the V-groove plate 12 is also formed with a fiber V-groove 13 and holding V-grooves 14 and 15. It is.

In this invention, a fixing piece 31 is attached to the third holding piece 17 in the center. Fixed piece 31 is presser piece 1
6, 17, and 18, and the third
When the presser piece 17 is closed against the V-groove, the fixing piece 31 is configured to simultaneously press the presser pieces 16 and 17 on both sides against the base. In this case, the presser piece is elastically pressed against the base so that the presser foot does not press the fiber or fiber core too strongly. For example, elastically biased protrusions 32 and 33 are attached to the ends of the holding piece 16, respectively. As shown in FIG. 2, the protrusion 32 has a pin inserted into a hole formed in the holding piece 16, and a coil spring 34 is wound around the pin to bias the protrusion 32 upward. 35 are provided.

This fixing piece 31 is fixed to the base 11 and can be released. For example, as shown in FIG. 3, a hole is made at the end of the third holding piece 17, and the shaft 36 is inserted through the hole.
A coil spring 38 is wound around the shaft 36, one end of the shaft 36 is fixedly engaged with the fixed piece 31, and a collar 39 is integrally formed in the center of the shaft, which is connected to the holding piece 1.
7 is on the base side, and an E ring is fitted onto the shaft 36 on the presser piece 17 side of the collar 39 to prevent the shaft 36 from coming off. The other end of this shaft is an engaging portion 41. On the other hand, a tightening plate 42 is attached to the bottom surface of the base 11, and the tightening plate 42 has an arcuate groove 43 formed around the axis as shown in the bottom surface in FIG. 4, and a tapered surface 44 along the circumferential surface of the groove. is provided. A hole 45 is formed in the base 11 opposite to this arcuate groove 43, and the clamping plate 42 is attached to the base 11 so as to be rotatable about a shaft 46, so that the third holding piece 17 When tightened against the V-groove, the engaging portion 41 is inserted into the arcuate groove 43 of the tightening plate 42 through the hole 45, and the tightening plate 4
2, the engaging portion 41 rides on the tapered surface 44, thereby biasing the fixed piece 31 toward the base 11, and resisting the biasing force of the spring 38, the engaging portion 41 rides on the tapered surface 44.
At the same time, the holding pieces 16 and 18 are pressed against the base 11 side.
will also be held on the base 11 side in the same way.

To connect fibers with the connector of this invention, the fibers to be connected are placed in the fiber groove 13 with all of the holding pieces 16, 17, and 18 open to the V-groove. In this state, the first holding piece 16 and the second holding piece 18 are rotated to close against the V-groove to lightly hold these fibers, and in this state, the fiber end surfaces are butted against each other. After applying the matching liquid to the mating surfaces, the third holding piece 17 is rotated to insert the engaging portion 41 into the arcuate hole 43 through the hole 45, and then the tightening plate 42 is rotated. As a result, the engaging portion 41 rides on the tapered surface 44, and as a result, each presser piece is attached to the base 11 by the fixing piece 31.
It will be held down and fixed against the side.

"Effects of the invention" As mentioned above, in the V-groove fiber connector according to this invention, tightening can be done by simply rotating the clamping plate, which is faster than the conventional case of tightening with three screws. Three clamping plates can be used, or instead of a clamping plate, three clamping pieces can be held and held by one screw, and the connection work can be done quickly, and the removal can also be done easily and quickly. This is extremely convenient when making many measurements.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a V-groove fiber connector according to this invention, Fig. 2 is a cross-sectional view of a part of the first holding piece, and Fig. 3 is a partial cross-sectional view of the third holding piece. A diagram showing a cross section, Figure 4 is a bottom view of the tightening plate,
FIG. 5 is a perspective view showing a conventional connector.

Claims (1)

[Claims for Utility Model Registration] A base, a fiber V-groove attached to the base and in which both fibers to be butted are arranged in the center, and a larger V-groove on both sides of the fiber V-groove. A connecting V-groove plate in which a holding V-groove is formed, and first and second holding pieces rotatably provided on one side of the V-groove plate so that the holding V-groove plate can be opened and closed. and a third presser piece provided on one side of the connection V-groove plate so as to be able to open and close with respect to the fiber V-groove between the first and second presser pieces; and the third presser piece. a fixed piece attached to the free end portion of the holding piece, extending in the arrangement direction of the first, second and third holding pieces, and holding the holding pieces on the base with the V-groove closed; and means for removably fixing the fixing piece to the base.