JP2000131550A - Optical fiber holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make usable plural single core wires as it is for assembling a multi-core optical connector. SOLUTION: An optical fiber holder 11 consists of a holder main body 12 and caps 13 and 14. Plural core adjustment grooves 15 parallel to each other respectively positioning/housing plural single core wires (single core coated optical fiber) at a prescribed pitch are formed on the upper surface of the holder main body 12. The figure shows a case using two pieces of single core optical fiber codes, and two pieces of core adjustment grooves 15 are provided on one side, and a code part housing groove 16 arranging/housing respective code parts of two pieces of optical fiber codes is provided to the other side. When the multi-core optical connector is assembled, the need of making the coated optical fiber a tape is eliminated, and plural single core wires as it is are used for assembling the multi-core optical connector.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber holder used as an optical connector assembling jig or an optical fiber processing equipment jig.

[0002]

2. Description of the Related Art In general, for example, when assembling a simple-assembled optical connector, when removing the coating of the optical fiber core, and when assembling the optical connector, it is used as a fixing jig for accurately positioning and fixing the optical fiber core. , An optical fiber holder is used. In an optical fiber processing device such as an optical fiber cutting device or an optical fiber fusion splicing device, an optical fiber holder is used as a fixing jig for accurately positioning and fixing an optical fiber core wire on the device.

An optical fiber holder of this type comprises a holder body and a lid which is openably and closably attached to the holder body. The optical fiber core is accommodated in an alignment groove formed on the upper surface of the holder body. Although the optical fiber core is held between the body and held from above, the conventional optical fiber holders each have one single core (single core optical fiber) or one single core.
The tape core of the book (tape-type optical fiber core) was gripped.

FIGS. 10 and 11 show a conventional single-core optical fiber holder of this kind. FIG. 10 is a plan view of the conventional optical fiber holder 1, and FIG. 11 is a side view in a used state.
The optical fiber holder 1 is provided with one alignment groove 4 for positioning and housing the optical fiber core wire 3 on the upper surface of the holder main body 2 over the entire length in the longitudinal direction.
For holding the optical fiber core 3 accommodated in the housing 5,
5 is attached to the holder body 2 via a hinge shaft 7 so as to be openable and closable. FIG. 10 shows a state in which one lid 5 is opened.

[0005]

The above-mentioned conventional optical fiber holder 1 is for a single-core wire, which is convenient when assembling a single-core optical connector, but cannot be used for assembling a multi-core optical connector. . Conventionally, when assembling a multi-core optical connector, it is necessary to tape a plurality of optical fiber cores, that is, it is necessary to use a tape core, and assemble a multi-core optical connector using a plurality of single cores as they are. Could not do. This also applies to optical fiber processing equipment such as an optical fiber cutting device and an optical fiber fusion splicing device, in which a plurality of single-core wires are collectively processed like each core wire in a tape core wire. Could not.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional circumstances, and provides an optical fiber holder which enables a plurality of single-core wires to be used as they are, for example, for assembling a multi-core optical connector. With the goal.

[0007]

According to the present invention, there is provided an optical fiber holder for holding an optical fiber core between a holder body and a lid attached to the holder body so as to be openable and closable. A plurality of parallel alignment grooves for positioning and accommodating a plurality of single-core optical fibers at predetermined pitches are formed on the upper surface of the holder body.

A second aspect of the present invention is an optical fiber holder for holding an optical fiber core between a holder body and a lid attached to the holder body so as to be openable and closable, and a longitudinal direction of an upper surface of the holder body. Forming a plurality of parallel alignment grooves for positioning and accommodating each of the exposed single-core optical fiber cords on one side of the single-core optical fiber cord;
The other side is provided with a cord portion groove for accommodating each cord portion collectively.

[0009]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIGS. 1 is a perspective view of an optical fiber holder 11 according to an embodiment of the present invention, FIG. 2 is a plan view of a holder main body 12 in the optical fiber holder of FIG. 1, and FIG. 3 is a sectional view taken along line AA of FIG. FIG. 4 is a sectional view taken along line BB of FIG. 2, and FIG. 5 is a sectional view taken along line CC of FIG. As shown in these figures, this optical fiber holder 1
1 comprises a plastic holder body 12 and two steel lids 13 and 14 attached to the holder body 12 so as to be openable and closable.

Incidentally, the optical fiber holder 1 of this embodiment
6 shows a case where each optical fiber core 31 of two single-core optical fiber cords 30 is gripped, as shown in FIGS. 6 and 7, and FIG. 3 shows a cross section. In FIG. 8, reference numeral 32 denotes a tensile strength fiber covering the outer periphery of the optical fiber 31, and reference numeral 33 denotes a PVC jacket.

As shown in detail in FIGS. 2 and 4, the holder main body 11 has two optical fiber cords 30 exposed on one side in the longitudinal direction of the upper surface (left side in FIG. 2 etc.). Two alignment grooves 15 having a V-shaped cross section for positioning and housing the optical fiber 31 are provided in parallel with each other, and a code groove 16 for collectively housing the code parts 30a is provided on the other side (the right side in FIG. 2 etc.). Provided. In the illustrated example, a space portion 17 for drawing out the tensile strength fiber 32 to the side is formed in the intermediate portion.

The aligning groove 15 is formed at the center of a shallow engaging groove 20 on one lid 13 side to which a later-described holding member 24 engages. As shown in FIG. 2, the engaging grooves 20 are not formed at both ends of the aligning groove 15, and the aligning grooves 1 are not formed.
5 is formed in a V-shape directly deep from the surface of the holder body 12. Further, in the holder main body 12, magnets 21 for adsorbing the lids 13 and 14, which are made of steel, are embedded so as to be submerged in a minute size.

The one lid 13 is for holding the optical fiber 31 accommodated in the alignment groove 15.
The other lid 14 is for holding the cord portion 30a housed in the cord portion groove 16;
14 is a hinge shaft 2 penetrating through the side of the holder body 12.
3 and attached to the holder main body 12 so as to be openable and closable. A holding member 24 made of plastic for holding the optical fiber 31 is provided at the center of the inner surface of the lid 13, and a holding member 25 made of rubber for holding the cord portion 30 a is provided at the center of the inner surface of the cover 14. I have.

The optical fiber holder 11 can be used, for example, when assembling a two-core optical connector using two single-core optical fiber cords 30. In this case, the PVC sheath 33 is removed in advance for a predetermined length of the distal end portion of the single-core optical fiber cord 30, and the tensile strength fibers 3 are removed.
2 is exposed and loosened to expose the optical fiber core 31. And two single-core optical fiber cords 3
0 of each exposed optical fiber core 31 in two rows of alignment grooves 1
5, and each cord portion 30a is accommodated in the cord portion groove 16. In this case, as shown in FIG. 6, the tensile strength fibers 32 are drawn out from the space 17 to the side and drawn back. Next, both lids 13 and 14 are closed. At this time, since both the lids 13 and 14 made of steel are attracted to the magnet 21 on the holder main body 12 side, the holder main body 12 and the lids 13 and 14 are attached to the optical fiber core 31 or the cord portion by this attractive force. Hold 30a.

As described above, each of the optical fiber cores 31 of the two single-core optical fiber cords 30 can be correctly gripped at a specified pitch. The optical connector of the heart can be assembled. In this case, the two-fiber optical connector is assembled by mounting the optical fiber holder 11 holding the optical fiber core 31 and the cord part 30a of the single-fiber optical fiber cord 30 to the two-fiber optical connector. Therefore, as before,
It is not necessary to use a two-core tape for assembling the two-core optical connector.

The above-described embodiment is for the case where an optical fiber cord is used. However, as shown in FIG. 9, it is also applicable to the case where an uncoded single-core optical fiber core 3 is directly used. In the case of this embodiment, the optical fiber holder 4
0 on the upper surface of the holder main body 2 extending in the longitudinal direction.
The centering groove 4 of the book is formed. This makes it possible to assemble a two-core optical connector using the two single-core wires as they are. Note that portions other than the alignment groove 4 are the same as those in FIG. 10, and thus description thereof will be omitted.

The number of alignment grooves provided in the holder body is not limited to two, but may be arbitrary, and may be provided according to the number of target optical fiber cores. Further, the optical fiber holder of the present invention can be used as an optical fiber core fixing jig in an optical fiber cutting device or an optical fiber fusion splicing device. In this case, the optical fiber holder of the present invention in which a plurality of single-core optical fibers are fixed is mounted on the optical fiber holder mounting portion of an optical fiber cutting device or an optical fiber fusion splicing device. In addition, the use form is not particularly limited.

[0018]

According to the optical fiber holder of the present invention, a plurality of parallel aligning grooves for positioning and accommodating a plurality of single-core optical fibers at a prescribed pitch are formed on the upper surface of the holder body. In addition, a plurality of single-core fibers (single-core optical fiber core wires) can be correctly gripped at a specified pitch. As a result, it is possible to handle a plurality of single-core wires as they are, similarly to each core wire in a tape core wire, and to assemble a multi-core optical connector using a plurality of single-core wires. It has become possible. Therefore, the restriction of using the tape core wire is eliminated. Also,
When the optical fiber holder of the present invention is used as a fixing jig in an optical fiber processing device such as an optical fiber cutting device or an optical fiber fusion splicing device, the processing becomes easy.

According to the second aspect, it is possible to assemble a multi-core optical connector using a plurality of single-core optical fiber cords.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of an optical fiber holder of the present invention.

FIG. 2 is a plan view of a holder main body of the optical fiber holder of FIG.

FIG. 3 is a cross-sectional view taken along a line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a sectional view taken along the line CC of FIG. 2;

FIG. 6 is a schematic plan view illustrating a state in which the optical fiber holder and the optical fiber core of the optical fiber cord are gripped by the optical fiber holder, and in a state where a cover is opened.

FIG. 7 is a plan view showing a state where the lid is closed, following FIG. 6;

FIG. 8 is a sectional view of an optical fiber cord targeted for the optical fiber holder of the embodiment.

FIG. 9 shows another embodiment, and is a plan view showing a state in which one lid of an optical fiber holder that holds only a single-core optical fiber is opened.

FIG. 10 is a plan view of a conventional optical fiber holder with one lid opened.

11 is a side view of a state in which the optical fiber core wire is gripped by the optical fiber holder of FIG.

[Explanation of symbols]

 11, 40 Optical fiber holder 2, 12 Holder body 5, 13, 14 Lid body 4, 15 Alignment groove 16 Cord section groove 20 Engagement groove 21 Magnet 7, 23 Hinge shaft 24, 25 Clamping member 30 Optical fiber cord 30a Cord part 3, 31 Optical fiber core

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toru Arikawa 1440, Mukurosaki, Sakura-shi, Chiba Prefecture Inside Fujikura Sakura Factory Co., Ltd. Terms (reference) 2H036 JA02 KA01 LA03 LA08 LA09 MA11 QA24

Claims (2)

[Claims] 1. An optical fiber holder for holding an optical fiber core between a holder main body and a lid attached to the holder main body so as to be openable and closable, wherein a plurality of single-core optical fibers are provided on an upper surface of the holder main body. An optical fiber holder comprising a plurality of parallel alignment grooves for positioning and accommodating fiber core wires at a predetermined pitch. 2. An optical fiber holder for holding an optical fiber core between a holder main body and a lid openably and closably attached to the holder main body, the optical fiber holder being provided on one side in the longitudinal direction of the upper surface of the holder main body. For a plurality of single-core optical fiber cords, each of which has an exposed single-core optical fiber core positioned and accommodated therein, and a plurality of parallel alignment grooves formed therein, and the cords are collectively accommodated on the other side. An optical fiber holder having a groove.