JP4133476B2 - Grasping device for grasping an object to be gripped in the form of multi-core tape, optical fiber fusion splicing device and optical fiber spouting device provided with this gripping device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gripping device that grips an object to be gripped in the form of a multi-core tape, and an optical fiber fusion splicing device and an optical fiber lead-out device provided with the gripping device.
[0002]
[Prior art]
Hitherto, jigs and mechanisms for gripping multi-fiber tape-like optical fibers and various cables are known.
[0003]
FIG. 3 is a schematic view of a conventional optical fiber holder that holds a multi-fiber tape-shaped optical fiber. The optical fiber holder 100 is rotatably attached to the main body 110 via a groove portion (provided that the groove width d1 is constant) 140 provided in the main body 110 and into which the optical fiber 300 is inserted. A lid 200 (only one lid 200 is shown in this example, but a plurality of lids may be provided) is roughly provided. A pressure plate 220 made of cork, rubber, or the like is provided on the surface of the lid 200 facing the main body 110, and the inserted optical fiber 300 is pressed by the frictional force of cork, rubber, or the like with the groove 140 and the pressure plate 220 of the lid 200. It is fixed tightly between. Usually, various widths of the optical fiber 300 in the form of the multi-core tape are used, and therefore, the width of the groove 140 provided in the optical fiber holder 100 also exists for the type of the optical fiber 300 to be used. .
[0004]
FIG. 4 is a partially enlarged view of the optical fiber lead-out device 500. The optical fiber lead-out device 500 includes a grip 400 having a groove 440 having a constant width (d2 in FIG. 4) into which the optical fiber 300 is inserted, and a lid (not shown) that covers the groove 440 into which the optical fiber 300 is inserted. And an optical fiber cutter 420 for cutting the end face of the portion 320 from which the coating of the optical fiber 300 tightly fixed by the lid portion is removed.
[0005]
Similar to the optical fiber holder 100 described above, the optical fiber lead-out device 500 also has a mechanism for holding the object to be grasped by the groove 440 and the lid. Also, there are various types of groove portions 440 of the optical fiber lead-out device 500 according to the widths of various objects to be grasped.
[0006]
FIG. 5 is a schematic view of the installation table. The installation table is a table on which the optical fiber holder 100 and the optical fiber extraction device 500 as shown in FIGS. 3 and 4 are mounted, and is used for improving workability.
[0007]
Such an installation base 600 is provided with a fixing mechanism 800 for fixing the optical fiber holder 100 and the like. The fixing mechanism 800 includes a generally pressing lid 801 and a lever 803. After the gripping device 100 (or the mouthing device 500, the butting device, etc.) is placed on the installation table 600, when the lever 803 is rotated, the holding lid 801 connected to the lever 803 is rotated and the gripping device 100 is rotated. Is fixed. By using the installation table 600 and the fixing mechanism 800, the optical fiber 300 or cable in the form of a multi-core tape can be gripped, and the process from the lead-out process (coating removal, cleaning, cutting) to the fusion splicing process can be performed consistently.
[0008]
FIG. 6 is a diagram illustrating a method for fixing the gripping device 100A to the installation base 600A. When the gripping device 100A is fixed to the installation table 600A, as shown in FIG. 6, the pins 610 and 610 provided on the installation table 600A are inserted into the pin insertion holes 620 of the gripping device 100A, and both are fixed. In some cases, the work can be performed (for example, Japanese Patent Application No. 2002-228934).
[0009]
In some cases, a magnet or the like is provided on the installation table, and the installation table and the gripping device are fixed by the magnetic force of the magnet.
[0010]
As another conventional example, there is a gripping device in which an optical fiber is gripped by a plurality of small pieces arranged alternately (see, for example, Patent Document 1).
[0011]
[Patent Document 1]
Japanese Utility Model Publication No. 62-184504 (page 1-2, Fig. 2)
[0012]
[Problems to be solved by the invention]
FIG. 7 is an explanatory view showing a case where a tape-shaped multi-core optical fiber 300 is gripped by a conventional gripping device. Hereinafter, the problems of the gripping device so far will be described with reference to this figure.
[0013]
As shown in FIG. 7A, in the case of the conventional optical fiber holder 100 as shown in FIG. 3, if the holder 100 corresponding to the width of the optical fiber 300 to be used is not used, the width d1 of the groove 140 and the gripped portion In some cases, the width of the target optical fiber 300 does not match and the optical fiber 300 protrudes from the groove, and the optical fiber 3 cannot be gripped correctly. Even if the optical fiber 300 having the same width of the groove 140 is to be gripped, the optical fiber 300 may not be gripped correctly due to variations in the width of the optical fiber 300. Further, when the width of the optical fiber 300 is smaller than the width of the groove 140, there is a problem that the optical fiber 300 is not gripped in parallel to the groove 140 as shown in FIG.
[0014]
Also, as shown in FIG. 4, in the conventional extraction device 500, since the optical fiber 300 is not parallel to the groove portion 440, the cut surface of the extraction portion 320 is inclined, that is, the end surface angle θ is 0. There is also a problem that it is not. When such an optical fiber 300 is used for information communication, there is a problem that connection loss increases.
[0015]
Thus, in processing the optical fiber, it is important to accurately grasp the object to be grasped. The present invention has been made to solve the above-described conventional problems, and a gripping device capable of gripping an object to be gripped having various widths having various widths, and an optical fiber including the gripping device. It is an object of the present invention to provide a fusion splicing device and an optical fiber lead-out device.
[0016]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, in claim 1, a gripping device for gripping a multi-fiber tape-shaped object to be gripped, wherein a groove width at one end has a minimum width among the objects to be gripped. A main body provided with a groove portion having a groove width which is the same length and has a groove width which is the same length as that of the object to be grasped having a groove width at the other end from the one end to the other end; And a lid that is rotatably provided on the main body and covers at least a part of the groove, and the width of the groove is continuously changed from one end to the other end .
[0019]
According to a second aspect of the present invention, there is provided a main body, a pair of electrode bars provided on the main body, a pair of gripping devices according to the first aspect provided on the main body portion, and the pair of gripping devices. The gist is an optical fiber fusion splicing device provided with a pair of V grooves provided and supporting a pair of optical fibers.
[0020]
According to a third aspect of the present invention, the gripping device according to the first aspect, a main body to which the gripping device is attached, an optical fiber cutter provided on the main body and cutting an optical fiber housed in a groove of the gripping device, The gist of the optical fiber lead-out device is as follows.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 and 2. Hereinafter, as a specific example of the gripping device according to the present invention, an optical fiber holder applied to an optical fiber fusion device and a multi-fiber tape-shaped optical fiber as an object to be gripped will be described as an example. In addition to this, the gripping device can also be applied to an optical fiber outlet device, an optical fiber coating removal device, an optical fiber butting device, and the like. Therefore, in describing the embodiment of the present invention, two reference examples of the gripping device before reaching the present invention shown in FIG. 1 and FIG. 2A and the embodiment of the gripping device according to the present invention. These will be sequentially described with reference to FIG.
[0022]
FIG. 1 is a schematic view showing a reference example of a gripping device related to the present invention. FIGS. 1 (a) to indicate to the optical fiber holder 1 has a main body 10 having a groove 12 for accommodating the object to be grasped object serving optical fiber 300, via the configured rotating portion 30 to the body 10 from the hinge mechanism, etc. The lid 20 is rotatably connected, and a pressing plate 23 is provided on the lid 20 and presses the optical fiber 300.
[0023]
The groove portion 12 of the optical fiber holder 1 includes a first groove portion 12a (groove width d4) and a second groove portion 12b (groove width d3 (≠ d4)) having different widths. The width d4 of the first groove 12a is set to the maximum width of the multi-fiber tape-like optical fiber 300 used, and the width d3 of the second groove 12b is the multi-fiber tape-like light used. Matched to the narrowest fiber.
[0024]
FIG. 1B shows a cross-sectional view taken along the line bb of FIG. 1A when the optical fiber holder 1 holds the multi-fiber tape-shaped optical fiber 300 having a width d4.
[0025]
In this case, since the width of the first groove 12a and the width of the optical fiber 300 are the same in the cc cross section (not shown), the optical fiber 300 is inserted into the first groove 12a without any gap, and then the pressing plate of the lid 23 23 and the groove 12 are gripped. On the other hand, since d3 <d4 in the second groove portion 12b, there are surplus portions 300a and 300b that do not fit in the second groove portion 12b as shown in FIG. As described above, since the optical fiber 300 is accommodated in the first groove portion 12a without a gap, the center of the optical fiber 3 and the center of the second groove portion 12b coincide with each other in the second groove portion 12b. In other words, the widths d5 of the left and right surplus portions 300a and 300b are both (d4-d3) / 2. Note that the stepped portion 14 where the optical fiber 300 and the second groove 12b abut is chamfered or the like so as not to damage the optical fiber 300.
[0026]
FIG. 1C is a cross-sectional view taken along the line cc of FIG. 1A when the optical fiber holder 1 holds the multi-fiber optical fiber 300 having a width d3.
[0027]
When the optical fiber holder 1 grips the multi-fiber tape-shaped optical fiber 300 having the width d3, the optical fiber 3 having the width d3 is accommodated in the second groove portion 12b without any gap. When the remaining portion is accommodated in the first groove portion 12a in this state, since d3 <d4, the first groove portion 12a has a gap portion 16 between the optical fiber 300 and the first groove portion 12b as shown in FIG. 16 will occur. As described above, since the optical fiber 300 having the width d3 is inserted in the second groove portion 12b without any gap, the center of the optical fiber 300 and the center of the first groove portion 12a coincide with each other in the first groove portion 12a. In other words, the widths d6 of the left and right gap portions 16, 16 are both (d4−d3) / 2.
[0028]
As described above, since the grooves 12 having different widths are provided, the object to be grasped is reliably grasped in the groove 12 at one end, so that the object to be grasped can be grasped accurately and easily. Further, the optical fiber 300 is narrowly fixed in parallel with the groove portion 12, and when the same mechanism as that of this reference example is applied to the optical fiber lead-out device, the end face angle is 0 degree. 300 end faces can be cut. Further, when the same mechanism is applied to an optical fiber butting apparatus, a pair of optical fibers to be grasped can be tightly fixed in parallel to the groove portion, and as a result, the end faces of the optical fibers can be accurately aligned. .
[0029]
In the reference example of FIG. 1A, the number of the lid 20 is one, and the lid 20 covers the first groove 12a. That is, the lid 20 covers the portion A in FIG. 1A. In the portion B not covered by the lid 20, the operator presses and fixes the object to be grasped against the groove portion with a finger or the like. In addition, when there are a plurality of lids 20, the lid 20 may cover both A and B.
[0030]
Next, embodiments of the gripping apparatus as another reference example shown in FIG. 2A and the gripping apparatus according to the present invention shown in FIG. 2B will be sequentially described.
[0031]
In the optical fiber holder 1A shown in FIG. 2A, a groove 12A provided on the main body 10A includes three grooves 12a, 12b, and 12c having different widths. If the groove widths are matched to the widths of the three multi-core tape optical fibers 300 using the respective groove widths, one optical fiber holder 1A according to this embodiment can correspond to the three multi-fiber optical fibers 300. is there.
[0032]
In the optical fiber holder 1B shown in FIG. 2B, the width of the groove 12B is gradually changed from one end to the other end in the longitudinal direction of the main body 10B. Although the amount of change of the groove 12B is arbitrary, the width d7 of the one end 12f of the groove 12B is set to the minimum width of the width of the optical fiber 300 to be used, and the width d8 of the other end 12e of the groove 12B is The optical fiber 300 used is adapted to the maximum width.
[0033]
By continuously changing the width of the groove 12B, the width of the optical fiber 300 can be more varied than when the width of the groove 12A is changed stepwise as shown in FIG. it can. By finely setting the amount of change in the groove width d9 (however, the groove width d9 represents the groove width in an arbitrary cross section between 12f and 12e), the object to be grasped having a width satisfying d7 ≦ d9 ≦ d8 can be obtained. Accurate accommodation is possible.
[0034]
Of course, the above-described embodiment is not limited to the optical fiber holder, but can be applied to an optical fiber lead tool, an optical fiber fusion splicing device, an optical fiber butting device, and the like.
[0035]
【The invention's effect】
As described above, according to the gripping device of the first aspect, the one end of the width of the groove portion that accommodates the target to be gripped in the form of multi-core tape is matched with the one having the maximum width among the gripping objects, and the other end is set. Since the width of the groove is continuously changed from one end to the other according to the minimum width, it is possible to accurately identify multiple types of objects to be grasped having different width dimensions including at least two different objects to be grasped. And can be securely fixed tightly.
[0038]
According to the optical fiber fusion splicing device of the second aspect , optical fibers having various widths can be accurately narrowed and fixed with one optical fiber fusion splicing device, and accurate fusion splicing can be performed.
[0039]
According to the optical fiber lead-out device of the third aspect , optical fibers having various widths can be accurately tightly fixed with a single optical fiber lead-out device, and the optical fiber lead-out operation can be performed accurately.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a reference example for explaining an embodiment of a gripping device according to the present invention.
A diagram for explaining an embodiment of such a gripping device in the present invention; FIG, (a) shows another reference example, (b) is a schematic illustrating one embodiment of a gripping device according to the present invention Figure.
FIG. 3 shows an example of a conventional optical fiber holder that holds a multi-fiber tape-shaped optical fiber.
FIG. 4 is a partially enlarged view of an optical fiber lead-out device.
FIG. 5 is a schematic view of an installation table.
FIG. 6 is a schematic diagram showing one method for fixing the gripping device to the installation base.
FIG. 7 is an explanatory view showing a case where a tape-shaped multi-core optical fiber is gripped by a conventional gripping device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Holding apparatus 10 ... Main body 12 ... Groove part 12a ... 1st groove part 12b ... 2nd groove part 12c ... 3rd groove part 14 ... Step part 16 ... Gap part 20 ... Lid 23 ... Pressing plate 30 ... Turning part 300a ... Surplus part 300b ... excess part 100 ... optical fiber holder 110 ... main body 120 ... rotating part 140 ... groove part 200 ... lid 220 ... pressing plate 300 ... tape-shaped multi-core optical fiber 320 ... spout part 400 ... gripping part 420 of the spouting device ... cutter 440 ... Groove part 500 ... Seal device 600 ... Installation table 610 ... Pin 620 ... Pin insertion hole 800 ... Fixing mechanism 801 ... Presser cover 803 ... Lever

Claims (3)

A gripping device for gripping an object to be gripped in a multi-core tape shape,
The groove width at one end is the same length as that having the smallest width among the objects to be grasped, and the groove width at the other end is the same length as that having the largest width among the objects to be grasped. A main body provided with a groove having a groove width from one end to the other;
And a lid that is rotatably provided on the main body and covers at least a part of the groove, and the width of the groove is continuously changed from one end to the other end. . The body,
A pair of electrode bars provided on the body;
A pair of gripping devices according to claim 1 provided on the main body,
An optical fiber fusion splicing device comprising a pair of V grooves provided between the pair of gripping devices and supporting the pair of optical fibers. A gripping device according to claim 1;
A main body to which the gripping device is attached;
An optical fiber lead-out device comprising: an optical fiber cutter that cuts an optical fiber provided in the main body and accommodated in a groove of the gripping device.

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