JP2001133653A - Optical fiber folder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical fiber folder which easily and surely fixes plural single-core optical fibers. SOLUTION: Two V-shaped grooves 13 are provided in the upper face of a folder base 11 from one end to the other, and one ends of retaining covers 12a and 12b are provided in the end part of the upper face of the folder base 11, so that they are freely turnable in the direction of the arrows, and two single-core optical fibers 1 are inserted to two V-shaped grooves 13 respectively and retaining covers 12a and 12b are closed to press and fix two single-core optical fibers 1 between retaining covers 12a and 12b and V-shaped grooves 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber folder for temporarily fixing a plurality of single-core optical fibers.

[0002]

2. Description of the Related Art When an optical fiber connector is attached to the end of an optical fiber, or when the ends of an optical fiber are to be connected to each other, the coating on the end of the optical fiber is removed or the optical fiber is cut. It is necessary to adjust the length. In order to improve the efficiency of such work, an optical fiber folder for fixing an optical fiber is usually used. Since the optical fiber includes a single-core optical fiber and a multi-core optical fiber, a dedicated optical fiber folder corresponding to each optical fiber is used.

FIG. 4 is a diagram showing a configuration of a conventional optical fiber folder for a single-core optical fiber, and FIG. 4A is a perspective view thereof. The optical fiber folder shown in the figure has a rectangular folder base 41 provided with one V-shaped groove 43 from one end to the other end, and is turned around the top end of the folder base 41 in the direction of the arrow shown in the figure. Plate-shaped 2 with one end supported movably
This is a configuration having two presser lids 42a and 42b.

Using such an optical fiber folder,
When fixing the single core optical fiber 4, the single core optical fiber 4
The single-core optical fiber 4 is inserted into the V-shaped groove 43 such that the tip of the single-core optical fiber 4 protrudes from the folder base 41 by a desired length, the holding cover 42a is closed, and the single-core optical fiber 4 is temporarily pressed and the position thereof is adjusted. Adjust and close the holding cover 42b to close the single core optical fiber 4
Is pressed and fixed.

FIG. 1B is a front view of the optical fiber folder when the holding lids 42a and 42b are closed. The depth of the V-shaped groove 43 is substantially equal to the diameter of the single-core optical fiber 4, and the holding lids 42 a and 42 b are completely closed while pressing the single-core optical fiber 4.

The basic structure of an optical fiber folder for a multi-core optical fiber is almost the same as that of a single-core optical fiber folder, but the groove provided on the folder base is formed as a groove corresponding to the multi-core. You.

[0007]

However, when a plurality of single-core optical fibers are to be fixed, the above-mentioned optical fiber folder can fix one single-core optical fiber or a multi-core optical fiber. However, there is a problem in that it is difficult to fix a plurality of single-core optical fibers to these optical fiber folders because of their special shapes.

The present invention has been made in view of the above, and an object of the present invention is to provide an optical fiber folder that can easily and reliably fix a plurality of single-core optical fibers.

[0009]

According to a first aspect of the present invention, there is provided an optical fiber folder comprising: a folder base having a plurality of grooves provided from one end to the other end; A gist is provided on the upper surface, the holding lid having one end rotatably supported at one end thereof, wherein the single-core optical fibers inserted one by one into the plurality of grooves are closed and pressed and fixed.

In the present invention, a plurality of grooves are provided on the upper surface of the folder base, and one end of the holding cover is rotatably installed on the upper surface of the folder base, and a single core is inserted into each groove. A plurality of single-core optical fibers can be easily fixed by fixing the optical fibers by pressing and closing the cover.

According to a second aspect of the present invention, in the optical fiber folder according to the first aspect, each of the plurality of grooves has a V-shaped cross section.

In the present invention, since the plurality of grooves have V-shaped cross sections, a plurality of single-core optical fibers can be easily fixed and an optical fiber folder can be easily manufactured. Have to be able to.

According to a third aspect of the present invention, there is provided the optical fiber folder according to the first or second aspect, wherein one end of a fixed lid provided with a plurality of grooves on the lower surface at the same interval as the interval between the plurality of grooves. A single-core optical fiber rotatably supported on the upper surface of the folder base and inserted one by one into each of the plurality of grooves is closed with a plurality of grooves provided in the plurality of grooves and the plurality of grooves provided in the fixed lid by closing a fixed lid. The gist is to press and fix.

In the present invention, one end of a fixed lid provided on the lower surface with a plurality of grooves having the same interval as the interval of the plurality of grooves is rotatably installed on the upper surface of the folder base, and the fixed lid is closed. The single-core optical fiber is pressed and fixed by the plurality of grooves and the plurality of grooves provided in the fixing cover, so that the plurality of single-core optical fibers can be easily and reliably fixed.

According to a fourth aspect of the present invention, in the optical fiber folder according to the third aspect, the cross-sectional shape of each of the plurality of grooves provided in the fixed lid is semicircular.

In the present invention, the work of fixing the plurality of single-core optical fibers to the optical fiber folder is facilitated by making each of the cross-sectional shapes of the plurality of grooves provided in the fixing lid semicircular. I have.

According to a fifth aspect of the present invention, in the optical fiber folder according to the third or fourth aspect, a plurality of the fixing lids are provided on the folder base.

In the present invention, by providing a plurality of the fixing lids on the folder base, a plurality of single-core optical fibers can be fixed more reliably.

[0019]

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

[First Embodiment] FIG. 1 is a view showing a configuration of an optical fiber folder according to a first embodiment, and FIG. 1 (a) is a perspective view thereof. The optical fiber folder shown in the figure has two V-shaped cross-sections.
Folder base 11 having a rectangular shape in which letter-shaped grooves 13 are arranged at predetermined intervals and provided from end to end of the upper surface;
Is provided with two plate-like holding lids 12a and 12b each having one end supported rotatably in the direction of the arrow shown in FIG.

Using such an optical fiber folder, 2
When fixing the single-core optical fiber 1, one single-core optical fiber 1 is inserted into each of the two V-shaped grooves 13 so that the tip of the single-core optical fiber 1 has a desired length. After projecting from the base 11, the holding lid 12 a is closed and the single-core optical fiber 1 is temporarily held to adjust its position,
Close the holding lid 12b and insert the single-core optical fiber 1 into the V-shaped groove 1.
3 is pressed and fixed.

FIG. 2B is a front view of the optical fiber folder when the holding lids 12a and 12b are closed. The depth of the V-shaped groove 13 is substantially equal to the diameter of the single-core optical fiber 1, and the holding lids 12a and 12b are
, And is completely closed.

With the single-core optical fiber 1 fixed as described above, operations such as removing the coating on the tip of the single-core optical fiber 1 and cutting the single-core optical fiber 1 to adjust the length are performed. After that, the holding lids 12a and 12b are opened to open the single core optical fiber 1.

Therefore, according to the present embodiment, two V-shaped grooves 13 are provided on the upper surface of the folder base 11 at predetermined intervals, and two
One end of each of the cover lids 12a and 12b is rotatably installed, and the single-core optical fiber 1 is inserted into each V-shaped groove 1 thereof.
The two single-core optical fibers 1 can be easily fixed by inserting them one by one into the cover 3 and closing and pressing and fixing the holding lids 12a and 12b.

In this embodiment, two V-shaped grooves 13 are provided in the folder base 11,
The number of V-shaped grooves 13 is not limited to this, and by providing the required number of V-shaped grooves 13 at appropriate intervals, the number of V-shaped grooves 13 can be adjusted to any number of cores and intervals of a single-core optical fiber. Can respond.

[Second Embodiment] FIG. 2 is a diagram showing a configuration of an optical fiber folder according to a second embodiment, and FIG. 2A is a perspective view thereof. Its feature is that it has a plate-like shape having two semicircular grooves 25 on the lower surface at the same interval as the interval between the two V-shaped grooves 26 on the upper surface of the folder base 21 and having a semicircular cross section. Is fixed to the upper end of the folder base 21 so as to be rotatable in the direction of the arrow shown in the figure, and two single-core optical fibers 2 are inserted one by one into the V-shaped groove 26. Then, the fixed lid 24 is closed, and each single-core optical fiber 2 is sandwiched between the V-shaped groove 26 and the semicircular groove 25 so as to be pressed and fixed. Note that, on both sides of the fixed lid 24, the holding lids 22 and 23 are rotatably installed.

FIG. 2B is a front view of the optical fiber folder when the fixing cover 24 is closed. The depth of the V-shaped groove 26 is substantially equal to the radius of the single-core optical fiber 2, and the depth of the semicircular groove 25 is also equal to the radius of the single-core optical fiber 2. The fiber 2 is completely closed while being pressed.

When the holding covers 22 and 23 are closed, the fixing of the single core optical fiber 2 by the fixing cover 24 is assisted.

Therefore, according to the present embodiment, two V-shaped grooves 26 provided on the upper surface of folder base 21 are provided.
One end of a fixed lid 24 provided with two semicircular grooves 25 on the lower surface at the same interval as the above is rotatably installed on the upper end of the folder base 21, and the fixed lid 24 is closed and the single-core light Since the fiber is sandwiched between the V-shaped groove 26 and the semicircular groove 25 and pressed and fixed, two single-core optical fibers can be fixed easily and reliably.

In the present embodiment, two V-shaped grooves 26 are provided on the folder base 21 and two semicircular grooves 25 are provided on the fixed cover 24. The present invention is not limited to this, and the number of V-shaped grooves 26 and the semicircular grooves 25 are provided at appropriate intervals as needed, so that the number of cores and intervals of a single-core optical fiber can be adjusted. can do.

A semicircular groove 25 is formed in the folder base 21.
And a V-shaped groove 26 may be provided in the fixed lid 24. In such a case, the same effect as described above can be obtained.

[Third Embodiment] FIG. 3 is a diagram showing a configuration of an optical fiber folder according to a third embodiment, and FIG. 3A is a perspective view thereof. The feature is that one end of two fixed lids 35 provided on the lower surface with two semicircular grooves 36 at the same interval as the interval between two V-shaped grooves 37 provided on the upper surface of the folder base 31, Folder base 3
1 is installed at the upper end of the upper surface so as to be rotatable in the direction of the arrow shown in FIG. That is, each single-core optical fiber 3 can be pressed and fixed by being sandwiched between a V-shaped groove 37 and a semicircular groove 36 of two fixed lids 35. Note that between the two fixed lids 35, there are holding lids 33, and on both sides of the two fixed lids 35, holding lids 32, 3 are provided.
4 are installed rotatably.

FIG. 4B is a front view of the optical fiber folder when the fixing cover 35 is closed. The depth of the V-shaped groove 37 is substantially equal to the radius of the single-core optical fiber 3, and the depth of the semicircular groove 36 is also equal to the radius of the single-core optical fiber 3. The fiber 3 is completely closed while being pressed.

Therefore, according to the present embodiment, two fixed holes having two semicircular grooves 36 on the lower surface at the same interval as the interval between the two V-shaped grooves 37 provided on the folder base 31. One end of the lid 35 is rotatably installed on the upper end of the folder base 31. The two fixed lids 35 are closed, and each single-core optical fiber 3 is connected to the V-shaped groove 37 and two semicircular The two single-core optical fibers can be more reliably fixed by being pressed and fixed by being sandwiched between the grooves 36.

In this embodiment, the fixed cover 3
Although two are provided, the number of the fixing lids 35 is not limited to this, and if the number is increased, the single-core optical fiber 3 can be fixed more reliably.

[0036]

As described above, according to the first aspect of the present invention, a plurality of grooves are provided on the upper surface of the folder base, and one end of the holding lid is rotatably mounted on the upper surface of the folder base. Then, the single-core optical fibers inserted one by one into each groove are closed and pressed and fixed, so that a plurality of single-core optical fibers can be easily fixed.

According to the second aspect of the present invention, the plurality of single-core optical fibers can be easily and reliably fixed by forming the plurality of grooves in a V-shaped cross section, and the optical fibers can be easily and reliably fixed. Folders can be easily manufactured.

According to the third aspect of the present invention, one end of a fixed lid provided with a plurality of grooves on the lower surface at the same interval as the intervals of the plurality of grooves is rotatably installed on the upper surface of the folder base, and is fixed. By closing the lid and pressing and fixing the single-core optical fiber with the plurality of grooves and the plurality of grooves provided in the fixed lid, the plurality of single-core optical fibers can be easily and reliably fixed.

According to the fourth aspect of the present invention, the plurality of single-core optical fibers are fixed to the optical fiber folder by making the cross-sectional shapes of the plurality of grooves provided in the fixing cover semicircular. It can be easier to do.

According to the fifth aspect of the present invention, by providing a plurality of the fixing lids on the folder base,
Further, a plurality of single-core optical fibers can be securely fixed.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an optical fiber folder according to a first embodiment.

FIG. 2 is a diagram illustrating a configuration of an optical fiber folder according to a second embodiment.

FIG. 3 is a diagram showing a configuration of an optical fiber folder according to a third embodiment.

FIG. 4 is a diagram showing a configuration of a conventional optical fiber folder for a single-core optical fiber.

[Explanation of symbols]

1, 2, 3, 4 ... single-core optical fibers 11, 21, 31, 41 ... folder bases 12a, 12b, 22, 23, 32, 33, 34, 42
a, 42b: Holding lid 13, 26, 37, 43: V-shaped groove 24, 35: Fixed lid 25, 36, semi-circular groove

Continuation of front page (72) Inventor Taiji Murakami 2-3-1 Otemachi, Chiyoda-ku, Tokyo F-term in Nippon Telegraph and Telephone Corporation 2H036 LA03 LA08 2H038 CA52

Claims (5)

[Claims] 1. A folder base having a plurality of grooves provided from end to end of an upper surface, and a holding lid having one end rotatably supported on the upper surface of the folder base. An optical fiber folder, wherein a single-core optical fiber inserted one by one is closed by pressing and holding a cover. 2. A sectional shape of each of the plurality of grooves is V
The optical fiber folder according to claim 1, wherein the optical fiber folder has a character shape. 3. One end of a fixed lid provided with a plurality of grooves on the lower surface at the same interval as the intervals of the plurality of grooves is rotatably installed on the upper surface of the folder base, and one end is provided in each of the plurality of grooves. 3. The optical fiber according to claim 1, wherein the inserted single-core optical fiber is pressed and fixed by closing the fixed cover and by pressing the single-core optical fiber between the plurality of grooves and the plurality of grooves provided in the fixed cover. folder. 4. The optical fiber folder according to claim 3, wherein each of the plurality of grooves provided in the fixed lid has a semicircular cross section. 5. The optical fiber folder according to claim 3, wherein a plurality of the fixing lids are provided on the folder base.