JPS61145507A - Fusing connector for optical fiber - Google Patents

Abstract

PURPOSE:To position a mounted optical fiber accurately and to decrease the number of components and reduce size and cost by fixing a V-grooved block and an electrode rod guide in the fitting recessed part of a base block and finishing V grooves of the both. CONSTITUTION:The V-grooved block 13 is inserted into and fixed in the fitting recessed part 11d of the base block 11, and the electrode rod guide 14 having a V groove at right angles to the axis of the optical fiber mounted in the V groove 13 is inserted into and fixed in the fitting recessed part 113. Then, while the V-grooved block 13 and electrode rod guide 14 are fitted to the block 11, grooves of the both are finished in the same working process. Therefore, even when individual components do not have high precision, the electrode rod is positioned accurately, the number of components are decreased to reduce the size and cost, and the need for adjustments for alignment in assembly is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a fusion splicer used to connect the tips of optical fibers.

■) Prior Art As shown in FIGS. 3 and 4, a conventional optical fiber fusion splicer includes a base block 1 made of a plastic insulator, a V-groove holder 2 attached to the base block 1, A V groove block 3 attached to this VL holder 2, a V groove block 4 that presses and fixes it, an electrode block 5 attached to the base block 1, an electrode plug 6 and an electrode attached to this electrode boot stock 5. It consisted of a guide 7 and an electrode rod 8 placed in a V-groove of the electrode guide 7 and held down by an electrode holder 9.

When connecting optical fibers using an optical fiber fusion splicer having such a structure, the optical fiber 10 is placed on the V-groove block 3, its axes are aligned, and the electrode rod 8 is energized to connect the optical fibers. This connects the fibers by generating arc discharge perpendicular to the fiber connections.

In this conventional example, (1) the groove block 3 is made of a material with good wear resistance such as cemented carbide or ceramics, and it is extremely difficult to process such as drilling or screw hole processing. Therefore, the groove block 3 could not be fixed with screws or the like, but was fixed with the V-groove holder 2 or the V-piece holder 9.

On the other hand, regarding the installation of the electrode rod 8, in order to maintain a constant temperature during fusion of the optical fibers and achieve uniform and good fusion, the height should be determined so as to be perpendicular to the axis of the optical fibers. It was necessary to keep the distance between both electrode rods constant and to align the axes of both electrode rods.

Therefore, conventionally, in order to adjust the height to the optical fiber 7, the electrode block 5 was fitted into the optical fiber 7 while aligning the axis from the direction of the arrow in FIG.

(C) Problems to be Solved by the Invention In the conventional example described above, in order to position the optical fiber and the electrode rod at orthogonal positions on the same plane, the base block 1, the electrode guide 7, the electrode block 5. V groove holder 2
．． It is necessary to finish and assemble the V-groove block 3 with very high precision, and these parts increase the cost.

Further, the structure is complicated, requiring adjustment for axis alignment during assembly, and furthermore, it is difficult to miniaturize the fuser.

(Means for Solving Problem d1) The present invention fixes the V-groove block and the electrode rod guide directly to the base block, and finishes the V-groove formed therein in the same processing process. This solves the drawbacks of the conventional example.

(e) Examples The present invention will be described in detail below based on the drawings.

FIG. 1 is a central sectional view showing one embodiment of the present invention, and FIG. 2 is a plan view of the fusion splicer shown in FIG. 1. Reference numeral 11 denotes a pace boot stock, which has a V-groove boot stock attachment recess 11e and a V-groove boot stock attachment recess 11e on its upper surface 11c.

12 is an electrode plug, and the lower surface 1 of the base block 11
It is attached to 1a.

13 is a V-groove block having a substantially concave shape;
It has a V-groove 13b facing the upper surface of the base block 11, and is fixed in the V-groove block mounting recess 11d of the base block 11 by adhesive, welding, or the like.

Reference numeral 14 denotes an electrode rod guide, which has a V-groove in a direction perpendicular to the axis of the optical fiber placed in the V-groove 13b of the groove block 13, and has an electrode rod guide mounting recess of the base block 11. It is fixed within the part ie by adhesive or the like.

15 is a pair of electrode rods, each of which is connected to the electrode rod guide 1.
It is placed in the V-groove of No. 4.

Reference numeral 16 denotes an electrode holder, which presses and fixes the electrode rod 15 from above.

V-groove block 13 and electrode rod guide 14 in this embodiment
are directly attached to the v-groove block attachment recess lid and electrode rod guide attachment recess lie of the base block 11, respectively.

In addition, this V-groove block 13 and electrode rod guide 14 (F)
The V-grooves are set to be finished in the same processing step after being attached to the pace boot stock 11, respectively. Therefore, errors in the heights of the V-groove block 13 and the electrode rod guide 14 during installation can be corrected by this finishing.

Incidentally, when attaching and processing each component, it is sufficient to use only the lower surface 11a of the base block 11 as a reference.

(f) Effects of the Invention According to the present invention, the number of component parts can be reduced, making it possible to reduce the size and cost.

In addition, even though the individual parts do not require particularly high precision, the optical fiber and electrode rod placed on the groove block and electrode guide are positioned extremely accurately and perpendicularly, and are always stable. Fusion splices can be made.

Furthermore, there is no need to adjust the axis alignment when assembling the parts, and work efficiency can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a central cross-sectional view showing one embodiment of the present invention, FIG. 2 is a plan view of the fusion splicer shown in FIG. 1, and FIG. 3 is a conventional fusion splicer. FIG. 4, a central sectional view showing the splicer, is a plan view of the fusion splicer shown in FIG. 3. 1.11---Base block, 3.13-@・
V-groove block, 6,12φ... Electrode plug, 7°14.
... Electrode guide, 8.15... Electrode rod. 9.16... Electrode holder. Applicant: Kawaguchiko Precision Co., Ltd., <1≦S=, , 7j
[111 1S i 211 1st 311 i wealth 4 -

Claims (1)

[Claims] In a fusion splicer, optical fibers mounted so that their axes coincide with each other are fusion spliced by arc discharge generated between electrode rods arranged orthogonally to the optical fibers. A V-groove block and an electrode rod guide are fixed to the mounting recess of a base block having a mounting recess, and then the V-groove of the V-groove block and electrode rod guide is fixed to the mounting recess of the base block to place the optical fiber and electrode rod, respectively. An optical fiber fusion splicer characterized by finishing.