JPS5972413A - Positioning jig of optical fiber - Google Patents

Abstract

PURPOSE:To execute exactly and easily positioning of an optical fiber by providing an auxiliary groove so as to cross a positioning groove of a jig body, and fitting a holding member into the auxiliary groove. CONSTITUTION:An auxiliary groove 12 is provided so as to cross a V-shaped positioning groove 11 of a jig body 1, and a plate-like holding member 14 is fitted into this groove so as to be inserted and drawn out freely. The member 14 is fitted so as to be slidable to a supporting frame 15 through a spring 16, and the supporting frame 15 is attahced pivotally to the tip of a rocking arm 17. When the holding member 14 is inserted from the upper part, it is made to press-contact with just the upper face of an optical fiber (a) in a state that its holding face 13 reaches the bottom of the positioning groove 11. Therefore, the holding face 13 can be made sufficiently longer than the diameter of the optical fiber (a), the fiber (a) is not detached from the holding face 13, and the positioning can be executed exactly and easily.

Description

[Detailed Description of the Invention] (a) Field of Industrial Application This invention relates to a positioning jig for fibers, mainly used for connecting optical fibers to each other or connecting optical fibers to other equipment. be.

((b) Prior Art When connecting optical fibers, it is necessary to correctly position the optical fibers and hold them in a predetermined position, so a positioning jig as shown in FIG. 1 has conventionally been used.

The jig shown in FIG. 1 has a V-shaped positioning groove 2 in a jig body 1.
A flat part 4 perpendicular to the pressing direction (arrow) is formed at the tip of an inverted triangular holding member 3 that fits into the groove 2, and the optical fiber a is engaged with the flat part 4 to secure the groove 2. The optical fiber 1 is pushed into the bottom part and held between the flat part 4 and the bottom part of the groove 2.

(/→ Problems to be Solved by the Invention 7 The width of the flat portion 4 of the holding member 3 is formed to be approximately 1 mm or less in order to improve positioning accuracy. However, the optical fiber & is extremely thin. Therefore, it is extremely difficult to hold the optical fiber a on the flat part 4 and push it into the bottom of the groove 2. The fiber a may come off the flat part 4 and be pressed between the sloped side surface of the holding member 3 and the sloped surface of the groove 2, often resulting in incorrect positioning.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide a positioning jig that can reliably and easily position an optical fiber optic fiber.

2) Means for Solving the Problems In order to solve the above problems, the present invention provides a corner portion 10 such as a V-shape or an L-shape on the jig main body 1, as shown in FIG. 3 or 4. A positioning groove 11 is provided, and an auxiliary groove 12 is provided in the middle or at the end of the groove 11 to cross the groove 11.
The holding member 14 has a bottom of the auxiliary groove 12 that is equal to or deeper than the upper surface of the optical fiber a to be inserted into the corner portion 10, and has a holding surface 13 facing the corner portion 1o.
The basic structure is such that the auxiliary groove 12 is removably fitted into the auxiliary groove 12.

The auxiliary groove 12 in the case of FIG. 3 has a length of 1. , has a depth m, and its length l is equal to or larger than the maximum width d of the positioning member 11, and the depth m is pushed into the corner part 10)+( : The optical fiber is formed to be the same as the "-" surface of the fiber a. Therefore, with the presser surface 13 of the presser assembly 14 inserted from above touching the bottom of the positioning groove 11, the optical fiber is held at the top. It will come in contact with two sides.

However, in order to adapt to the diameter of the optical fiber a, or for other manufacturing convenience (T), the depth of the auxiliary groove 12 may be formed deeper than in the above case, as shown by the mark.

In the case of FIG. 4, the auxiliary groove 12 is 1. The L-shaped groove is formed to be larger in both bottom width and depth than the positioning groove 11, the pressing surface 13 of the holding member 14 is formed obliquely, and the holding member 14 can be inserted and removed in the transverse direction of the positioning groove 11. They fit together so that they fit together.

In addition, when the presser foot 13 is formed obliquely as shown in the figure, the auxiliary groove 12 may be formed to have an inclined groove bottom parallel to the presser surface 13 as shown in FIG.

Moreover, in any of the above cases, the presser surface 13 of the presser member 14
The length of the positioning groove 11 can be set to be longer by "-" without being restricted by the shape of the positioning groove 11.

(Feather Example) Figure 6 shows the first example.
A shape positioning groove 11 is formed, and an auxiliary groove 12 in the transverse direction is formed in the middle of the groove 11 in the same manner as in the case of FIG.

The holding member 14 is attached to the support frame 15 via a spring 16.
The optical fiber a is slidably housed in the optical fiber a, and its spring 16 relieves the pressing force on the optical fiber a. The support frame 15 is pivoted to the tip of a swing arm 17, and the presser member 14 is moved into the auxiliary groove 1 by the vertical movement of the arm 17.
It is inserted into or pulled out from 2.

A holding device 18 for the covering portion l) of the optical fiber a is installed at the rear of the jig main body 1, and a holding member 19 of the holding device 18 is pivotally attached to the swing arm 20.

Next, the second embodiment shown in FIG. 7 has the two swing arms 17 described above. This uses a rocking plate 21 that is integrated with 0.

Further, the fourth embodiment shown in FIG. 8 has a V-shaped positioning groove 1.
1 are provided in parallel, and the auxiliary 1h12 and the holding member 14 are formed to have a predetermined length so as to be common to each tM11. ”2 Auxiliary groove 12 and presser portion U'14j
However, the positioning II may be provided separately.

Further, in the fifth embodiment shown in FIG. 9, a plurality of positioning grooves ii, 1i are provided in the jig main body 1 at regular intervals in the length direction, and the extension line of the corner portion 10 of the valley groove 11. The auxiliary grooves 12 and the pressing members 14 are individually provided for each valley groove 11 and 11, respectively. This configuration has the advantage that the axes of the two optical fibers 3 automatically match.

In each of the embodiments described below, the positioning groove 1 is
1, an auxiliary groove 12 is provided in the middle of the positioning groove 11, but the auxiliary groove 12 may be provided at the end of the positioning groove 11. In addition, one positioning groove 11 has a plurality of auxiliary grooves 1.
2, and a common or individual pressing member 14 is provided in each auxiliary groove 12.
may be fitted.

(c) Effects As mentioned above, does this invention assist the positioning groove in its transverse direction? Since Ni is provided and the holding member is fitted into the auxiliary groove, the holding surface of the holding member can be formed to be sufficiently long compared to the diameter of the optical fiber. therefore,
The optical fiber can be reliably and easily pushed into the corner of the positioning groove, resulting in accurate positioning.

[Brief explanation of drawings]

1 and 2 are sectional views showing the basic structure of a conventional positioning jig, FIGS. 3 to 5 are sectional views showing the basic structure of the present invention, and FIGS. ．． Second. It is a perspective view of the 3rd and 4th Example. DESCRIPTION OF SYMBOLS 1... Jig main body, 10... Corner part, 11... Positioning groove, 12... Auxiliary groove, 13... Pressing surface, 14
...Press member patent applicant: Sumitomo Electric Industries, Ltd., Nippon Telegraph and Telephone Public Corporation, Furukawa Electric Co., Ltd., Fujikura Electric Wire Co., Ltd. Agent: IEL Kama 2 Continuation of Figure 9, page 1 ■Application Person Furukawa Electric Co., Ltd. 2-6-1-0 Marunouchi, Chiyoda-ku, Tokyo Applicant Person Fujikura Electric Wire Co., Ltd. 1-5-1 Kiba, Koto-ku, Tokyo

Claims (4)

[Claims] (1) A positioning groove with a V-shaped, L-shaped, etc. corner part is provided in the jig body, and the positioning groove is located in the middle or at the end of the groove.
/l is provided, and the bottom of the auxiliary groove is inserted into the corner part.) A holding member is formed as deep as or deeper than the second surface of the IC fiber, and has a holding surface facing the corner part. An optical fiber positioning jig which is fitted into the above-mentioned auxiliary groove so as to be freely inserted and removed. (2) A special feature in which a plurality of positioning grooves are arranged in parallel, one auxiliary groove common to each positioning groove is provided, and one pressing member common to each positioning groove (1111) is fitted to the auxiliary γNg. R' [Optical fiber positioning jig according to claim 1. (3) The optical fiber positioning jig according to claim 1, wherein a plurality of positioning devices 1 are arranged in series so that the extension lines of each corner portion coincide with each other. (4) The Y6 fiber positioning jig according to claim 1, wherein a plurality of auxiliary grooves are formed in one positioning groove.