JP5802702B2 - Optical fiber connection tool and optical fiber connection method - Google Patents

Description

  The present invention relates to an optical fiber connection tool and an optical fiber connection method.

  2. Description of the Related Art Conventionally, there has been provided an optical fiber connection tool for inserting an optical fiber into an optical fiber connector and butt-connecting the optical fibers inside the optical fiber connector. (For example, refer to Patent Document 1). In this optical fiber connection tool, the optical fiber holder holding the optical fiber is moved toward the optical fiber connector, so that the optical fiber is butt-connected inside the optical fiber connector.

JP 2008-003218 A

  However, in the above optical fiber connecting tool, before the optical fiber is butt-connected, the friction between the optical fiber connector and the optical fiber inserted into the optical fiber connector causes the inside of the optical fiber connector of the optical fiber. In some cases, resistance to the insertion force of the optical fiber is increased in the inserted portion. In this case, even if the optical fiber holder is moved toward the optical fiber connector, the optical fiber may be buckled between the optical fiber holder and the optical fiber connector before the optical fiber is butt-connected.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide an optical fiber connection tool and an optical fiber connection method that can prevent buckling of an optical fiber before the optical fiber is butt-connected. And

To solve this problem, the optical fiber connection tool of the present invention, the optical fiber connector, by inserting the pair of optical fiber inside from the both ends, the pair of light inside the optical fiber connector an optical fiber connection tool using a work of connecting butt fibers, disposed at both ends of the optical fiber connector, a pair of optical fiber holder for holding said pair of optical fibers respectively, the optical fiber connector And an installation base on which the pair of optical fiber holders are installed, and the optical fiber connector includes at least a coating removing portion for one optical fiber of the pair of optical fibers, and the one optical fiber one optical fiber holder of the, in the state of being placed on the installation stand movable in a direction toward and away from the said optical fiber connector and Is the installation base is the provided between one of the optical fiber holder and said optical fiber connector of the insertion slot, comprises a fiber guide section having an insertion hole for inserting said one of the optical fiber, the light The insertion ports at both ends of the fiber connector have guide portions that narrow toward the inside, and the fiber guide portion includes a first fiber guide portion fixed to the installation base adjacent to the optical fiber connector. A second fiber guide portion reversibly movable in the moving direction of the one optical fiber holder between the first fiber guide portion and the one optical fiber holder, and the optical fiber connector and The interval between the first fiber guide portions is set in advance to a predetermined value or less so that the one optical fiber does not buckle, and the one optical fiber holder, the second fiber guide The gap between adjacent members of the guide portion and the first fiber guide portion is moved by moving the one optical fiber holder toward the optical fiber connector, and the one optical fiber is removed by the coating removal portion. While the one optical fiber can be maintained below a predetermined value that does not buckle, and the first fiber guide portion and the second fiber guide portion are disposed between the main body portion and the main body portion. The main body portion that includes an interposition position that interposes an optical fiber and a lid body portion that is reversibly movable between an open position that is separated from the main body portion, and that faces each other in a state of being disposed at the interposition position And at least one of the opposing surfaces of the lid portion, a groove portion forming the insertion hole is formed, and the one optical fiber that has been covered and removed by the covering removal portion is butt-contacted. In order to continue, it is possible to form a deflection in the one optical fiber by moving all the lid portions in the first fiber guide portion and the second fiber guide portion to an open position .

  And in the said optical fiber connection tool, it is preferable when the said fiber guide part is urged | biased in the direction opposite to the insertion direction of the said optical fiber.

  The optical fiber connection tool may include a holder fixing mechanism that fixes the optical fiber holder at a predetermined position in a state where the fiber guide portion is sandwiched between the optical fiber connector and the optical fiber holder. .

Furthermore, in the optical fiber connection tool may pre Symbol fiber guide section is provided at both ends of the optical fiber connector.

  Furthermore, in the optical fiber connection tool, it is more preferable that a plurality of the fiber guide portions are arranged in the moving direction of the optical fiber holder.

In the optical fiber connection method of the present invention, a pair of optical fibers is inserted into the optical fiber connector from both ends, and the pair of optical fibers are butt-connected in the optical fiber connector. A fiber connection method, the optical fiber connector including at least a coating removal unit for one optical fiber of the pair of optical fibers, an installation unit for installing the optical fiber connector, and the installation unit A pair of optical fiber holders provided movably with respect to the installed optical fiber connector, disposed at both ends of the optical fiber connector, and respectively holding the pair of optical fibers, and the installation unit and the light is provided between the fiber holder, and a first fiber guide portion fixed to the installation portion adjacent to the optical fiber connector, said first fiber guide section Between said one of the optical fiber holder, and a fiber guide section and a second fiber guide section is movable reversibly in the direction of movement of said one of the optical fiber holder, the optical fiber connector and the The interval between the first fiber guide portions is preset to a predetermined value or less so that the one optical fiber does not buckle, and the one optical fiber holder, the second fiber guide portion, and the first fiber guide While the one optical fiber holder is moved toward the optical fiber connector and the one optical fiber is covered and removed by the coating removing portion, the interval between the adjacent members of the portion is changed. The first fiber guide part and the second fiber guide part can be maintained below a predetermined value that does not buckle, and the main body part and the main body Between the intervening position for interposing the optical fiber and an open position separated from the main body, and a lid body portion reversibly movable between each other in a state of being arranged at the intervening position. A pair of optical fiber holders using a jig in which a groove portion forming an insertion hole through which the one optical fiber is inserted is formed in at least one of the opposing surfaces of the main body portion and the lid portion. When the pair of optical fibers held by and removed by the coating removing unit is inserted into the optical fiber connector and the pair of optical fibers are butt-connected, the first fiber guide unit and The pair of optical fibers is held by the second fiber guide portion, and the lid portions of the first fiber guide portion and the second fiber guide portion are all moved to the open position. In this case, the one optical fiber is bent .

According to the present invention, when an optical fiber is butt-connected using an optical fiber connection tool (jig), the optical fiber is held by the optical fiber holder, and the optical fiber is further connected to the fiber guide portion (the insertion of the optical fiber). The optical fiber is inserted into the optical fiber connector by moving the optical fiber holder in the direction approaching the optical fiber connector while being held in the hole). At the time of this insertion, the optical fiber is held by the fiber guide between the optical fiber holder and the optical fiber connector, so even if the resistance against the insertion force of the optical fiber is large, the optical fiber holder and the optical fiber connector It is possible to prevent the optical fiber from being bent or buckled.
Further, if there is an appropriate gap between the fiber guide portion and the optical fiber connector, the fiber guide portion is brought into contact with the fiber guide in the direction of approaching the optical fiber connector together with the optical fiber holder. Since it can be moved, the insertion length of the optical fiber with respect to the optical fiber connector can be extended.

It is a perspective view which shows the optical fiber connection tool which concerns on one Embodiment of this invention. It is a disassembled perspective view of the optical fiber connection tool of FIG. It is an expansion perspective view which shows the holder installation part and fiber guide unit of the optical fiber connection tool of FIG. It is an expanded sectional view which shows the holder installation part and fiber guide unit of the optical fiber connection tool of FIG. It is a perspective view which shows the optical fiber holder of the optical fiber connection tool of FIG. It is a perspective view which shows the optical fiber connector used for the optical fiber connection tool of FIG. It is a disassembled perspective view of the optical fiber connector of FIG. It is sectional drawing of an optical fiber connector. It is a perspective view of the coating | coated removal part with which the optical fiber connector of FIG. It is sectional drawing which shows a mode that the coating | coated of an optical fiber is removed in the coating removal part shown in FIG. It is sectional drawing which shows the insertion state of the wedge member with which the optical fiber connection tool of FIG. 1 is equipped. It is sectional drawing which shows the procedure which inserts one optical fiber in an optical fiber connector using the optical fiber connection tool shown in FIGS. It is sectional drawing which shows the state which inserted one optical fiber in the optical fiber connector. It is sectional drawing which shows the procedure which inserts the other insertion optical fiber in an optical fiber connector using the optical fiber connection tool shown in FIGS. It is sectional drawing which shows the state which inserted the other optical fiber in the optical fiber connector. It is a graph which shows the relationship between the bending width of an optical fiber, and the insertion force of the optical fiber with respect to an optical fiber connector (removal part). It is sectional drawing which shows the operation | movement procedure at the time of employ | adopting the structure which an optical fiber holder can retract. It is a perspective view which shows the other example of a pressing pin.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
The optical fiber connection tool according to the present embodiment is used for an operation of inserting an optical fiber into the optical fiber connector and butt-connecting the optical fibers inside the optical fiber connector.

[Optical fiber connector]
First, the optical fiber connector of this embodiment is demonstrated with reference to FIGS.
The optical fiber connector A connects a pair of optical fibers 1 by inserting a pair of optical fibers 1 from both ends of the optical fiber connector A and abutting them. As shown in FIG. 10, the optical fiber 1 is formed by covering the internal optical fiber 13 with a coating 12. Then, the optical fiber connector A of the present embodiment removes the coating 12 from the pair of optical fibers 1 to lead out the internal optical fiber 13 to form a bare optical fiber 14, and abuts the end portion of the bare optical fiber 14. To connect. As shown in FIGS. 6 and 7, the optical fiber connector A includes a base member 2, a lid 3, a clamp portion 4, and a sheath removing portion 5, and the base member 2 and the lid 3 are a pair of light. A pair of elements sandwiching the fiber 1 is formed.

The base member 2 (base side element) has a flat facing surface 20 that faces the lid 3.
The lid 3 (lid side element) includes a central lid 31, two covering grip covers 32 on both ends of the central cover 31, and two end covers 33 on both ends of the covering grip cover 32. These are provided so as to be superposed on the base member 2 in a side-by-side state.

A plurality of support convex portions 21 (21a, 21b, 21c) for positioning the lid 3 with respect to the base member 2 are formed on the base member 2 so as to protrude from the facing surface 20 at intervals in the length direction. ing.
The support convex portion 21 includes a first support convex portion 21a at both ends of the base member 2, a second support convex portion 21b provided on the inner side in the length direction of the base member 2 than the first support convex portion 21a, The third support convex portion 21c is further provided on the inner side in the length direction with respect to the second support convex portion 21b.

The first support protrusions 21 a are provided on both sides of the base member 2, and the end cover 33 is positioned by fitting into a concave one side end 33 h formed on the side surface of the end cover 33. To do.
The second support protrusions 21b are provided on both side portions of the base member 2, respectively, and the concave other end portion 33i formed on the side surface of the end cover 33, and the side surface of the covering grip cover 32 adjacent thereto. These are positioned by fitting into the concave one side end portion 32h.
The end cover 33 is in a state in which the movement of the base member 2 in the length direction is restricted by positioning both ends by the first support protrusion 21a and the second support protrusion 21b.

The third support convex portion 21c is formed by fitting the concave other side end portion 32i formed on the side surface of the covering and gripping lid 32 and the concave end portions 31h at both ends of the side surface of the central lid 31 into the covering gripping lid. The other end 32 i of 32 and the end 31 h of the central lid 31 are positioned.
The third support protrusion 21c is provided only on one side of the base member 2, and the hinge protrusion 22 is formed on the side of the base member 2 where the third support protrusion 21c is not formed. ing.

A hinge recess 34 (see FIG. 11) corresponding to the hinge projection 22 is formed in the central lid 31 and the covering grip lid 32. When the hinge convex portion 22 engages with the hinge concave portion 34, the central lid 31 and the covering grip lid 32 can be rotated with the hinge convex portion 22 as a fulcrum.
The central lid 31 and the covering grip lid 32 can be rotated in the opening direction with respect to the base member 2 by inserting the wedge member 170 (see FIG. 11).

As shown in FIG. 8, groove portions 32b and 33b made of V-grooves, U-grooves, round grooves, and the like are formed along the length direction on the opposing surface 32a of the covering and gripping lid 32 and the opposing surface 33a of the end lid 33. Has been.
The groove portions 32b and 33b are formed to communicate with each other in the length direction.
The groove portion 33b of the end cover 33 is somewhat deeper than the groove portion 32b of the covering and gripping lid 32, whereby the friction with the optical fiber 1 is reduced in the groove portion 33b, and the optical fiber 1 is smoothly inserted and guided. Is possible.

On the facing surface 20 of the base member 2, groove portions 20 b such as V-grooves, U-grooves, and round grooves are formed at positions facing the groove portions 32 b and 33 b of the covering grip lid 32 and the end lid 33.
The groove 20b of the base member 2 and the groove 32b of the covering and gripping lid 32 form an introduction path 24 through which the optical fiber 1 is inserted.
The length L1 of the introduction path 24 is preferably, for example, 1 to 3 mm. Thereby, the buckling prevention effect can be enhanced.

The groove portion 20 b of the base member 2 and the groove portion 33 b of the end lid 33 form a guide hole 28 (guide portion) for introducing the optical fiber 1 into the introduction path 24.
The guide hole 28 is for preventing the optical fiber 1 from buckling when the optical fiber 1 is attached and connected.
That is, when the optical fiber 1 is butt-connected, the optical fiber 1 is inserted in a state where the covering grip lid 32 and the base member 2 are opened. Therefore, a strong pressing force is applied to the optical fiber 1 for removing the covering 12 described later. However, the optical fiber 1 is likely to buckle between the covering and gripping lid 32 and the base member 2, but the radial movement of the optical fiber 1 is restricted by the guide hole 28. Buckling is prevented.

  The base member 2 and the end cover 33 are formed with an insertion port 25 made of a recess tapered toward the guide hole 28 so that the optical fiber 1 can be easily inserted into the guide hole 28. Can be done.

On the opposing surface 20 of the base member 2, an alignment groove 20c made of a V-groove, U-groove, round groove or the like is formed.
The alignment groove 20c positions and aligns the bare optical fibers 14 and 14 to be butt-connected with high accuracy.

As shown in FIGS. 6, 7, and 11, the clamp portion 4 is made of, for example, a thin metal plate, and from the both sides of the back plate portion 4 a and the back plate portion 4 a over the entire length in the longitudinal direction of the back plate portion 4 a. A side plate portion 4b is formed so as to protrude perpendicularly to the back plate portion 4a.
The side plate portion 4b is divided into three portions corresponding to the central lid 31 and the covering and gripping lid 32 by a slit-shaped cut portion 4d.
The clamp portion 4 includes a first clamp spring portion 41 that holds one covering grip lid 32 and the base member 2, a second clamp spring portion 42 that holds the central lid 31 and the base member 2, and the other covering grip. A third clamp spring portion 43 that holds the lid 32 and the base member 2 is provided.

The side plate portion 4b is formed with an engaging convex portion 4c protruding in a direction approaching each other.
On the other hand, engagement grooves 31d and 32d are formed in the center lid 31 and the covering grip lid 32 at positions corresponding to the engagement protrusions 4c. The base member 2 also has an engagement groove 21d formed at a position corresponding to the engagement protrusion 4c.
In a state in which the central lid 31 and the covering and gripping lid 32 are overlapped on the base member 2 and the clamp portion 4 is attached thereto, the engaging convex portion 4c is the engaging groove 21d of the base member 2, the central lid 31 and the covering and gripping lid 32. The engaging grooves 31d and 32d are engaged.

As shown in FIGS. 6 and 11, when the lid 3 is assembled to the base member 2, a wedge is inserted between the base member 2 and the central lid 31 and between the base member 2 and the covering grip lid 32. A mouth 27 is formed. The wedge insertion port 27 is formed on the side of the base member 2 opposite to the hinge projection 22.
The wedge insertion port 27 is for inserting a wedge member 170 described later. By inserting the wedge member 6 into the wedge insertion port 27, the center lid 31 and the covering grip lid 32 are opened in the direction relative to the base member 2. To turn.

As shown in FIGS. 7 to 10, the coating removing unit 5 is provided between the base member 2 and the left and right coating grip lids 32 so as to be positioned on both sides of the central lid 31.
The coating removing unit 5 removes the coating 12 from the optical fiber 1 inserted from both ends of the optical fiber connector A to form a bare optical fiber 14, and guides the bare optical fiber 14 to the central lid 31 side.

The coating removal unit 5 includes a block 51 formed in a substantially rectangular solid shape, an optical fiber insertion hole 52 formed in the block 51, and a bare optical fiber insertion formed so as to face the optical fiber insertion hole 52. And a hole 53.
The optical fiber insertion hole 52 and the bare optical fiber insertion hole 53 are opposed to each other through a window hole 54 formed so as to penetrate the block portion 51 in the thickness direction (a direction orthogonal to the insertion direction of the optical fiber 1). Yes.

The optical fiber insertion hole 52 is for inserting the optical fiber 1 before the coating 12 is removed, and has substantially the same diameter as the outer diameter of the optical fiber 1.
The optical fiber insertion hole 52 is formed with a tapered opening 52 into which the optical fiber 1 enters, and the optical fiber 1 is introduced from the introduction port 52. Since the introduction port 52 opens in a tapered shape, the optical fiber can be smoothly guided to the optical fiber insertion hole 52.
The terminal end of the optical fiber insertion hole 52 faces the window hole 54. The bare optical fiber insertion hole 53 is for inserting the bare optical fiber 14 that has been exposed after the coating 12 is removed, and is formed to have substantially the same diameter as the bare optical fiber 14.
The bare optical fiber insertion hole 53 is formed to be coaxial with the optical fiber insertion hole 52, and faces the optical fiber insertion hole 52 through the window hole 54. The end of the bare optical fiber insertion hole 53 is a lead-out port 53a opened in a taper shape, and this lead-out port 53a faces the alignment groove 20c formed in the base member 2.

An annular blade portion 55 is formed in the coating removal portion 5. The annular blade 55 separates the optical fiber 1 pushed out from the optical fiber insertion hole 52 into a coating 12 and a bare optical fiber 53, and projects in a tapered shape as it goes to the rear side in the insertion direction of the optical fiber 1. A tapered cylindrical shape is formed around the bare optical fiber insertion hole 53.
The bare optical fiber 53 separated from the coating 12 by the annular blade 55 is inserted into the bare optical fiber insertion hole 53 and further pushed out from the bare optical fiber insertion hole 53 into the alignment groove 20c. The annular blade portion 55 is formed so as to protrude into the window hole 54 of the block portion 51.

  A plate-like blade portion 56 is formed on the outer periphery of the annular blade portion 55. The plate-like blade portion 56 protrudes from a plurality of locations in the circumferential direction of the outer periphery of the annular blade portion 55, and cuts the coating 12 of the optical fiber 1 reaching the annular blade portion 55 at the outer periphery of the annular blade portion 55. By this cutting, the covering 12 becomes a narrow band shape and can escape into the window hole 54.

The coating removal portions 5 are disposed on both sides of the central lid 31, and the optical fibers 1 are inserted into the optical fiber insertion holes 52 by pushing the pair of optical fibers 1 from the guide holes 28 on both sides of the optical fiber connector A. And is inserted into the optical fiber insertion hole 52.
By further pushing the optical fiber 1, the optical fiber 1 reaches the annular blade portion 55, and the annular blade portion 55 is inserted between the bare optical fiber 14 and the coating 12.
By this insertion, the coating 12 can be easily peeled from the bare optical fiber 14, and the bare optical fiber 14 is led out. The exposed bare optical fiber 14 is pushed out into the bare optical fiber insertion hole 53 and inserted into the bare optical fiber insertion hole 53. At this time, the coating 12 is cut by the plate-like blade portion 56 on the outer periphery of the annular blade portion 55 to form a narrow band shape, and the narrow band-shaped coating 12 escapes to the window hole 54 side.

In this way, the bare optical fiber 14 is smoothly inserted into the bare optical fiber insertion hole 53 by the coating 12 escaping to the window hole 54 side.
The bare optical fiber 14 inserted into the bare optical fiber insertion hole 53 passes through the outlet 53a and enters the alignment groove 20c of the base member 2, but the outlet 53a of the bare optical fiber insertion hole 53 is tapered. Therefore, there is a slight margin in the direction from the bare optical fiber insertion hole 53, and the bare optical fiber 14 can be easily guided to the aligning groove 20c.
As described above, the pair of optical fibers 1 are pushed into the optical fiber connector A , and the coating 12 is removed, and the end portions of the bare optical fibers 14 led out from the coating 12 are abutted and connected.

[Optical fiber connection tool]
As shown in FIGS. 1 and 2, the optical fiber connection tool 100 of the present embodiment includes an optical fiber holder 110 that holds the optical fiber 1, an installation stand 120 that installs the optical fiber connector A and the optical fiber holder 110, A wedge member 170 that tilts the central lid 31 and the covering grip lid 32 of the optical fiber connector A in the opening direction with respect to the base member 2.

The installation stand 120 includes a connector installation unit 121 that installs the optical fiber connector A, and a pair of holder installation units 122 that install the optical fiber holders 110 at both ends of the connector installation unit 121.
The connector installation part 121 of this embodiment is formed to be recessed from the upper side of the installation table 120. Further, one side portion of the connector installation portion 121 is opened outward so that the wedge member 170 can be inserted into the wedge insertion port 27 (see FIG. 6) of the optical fiber connector A installed in the connector installation portion 121. doing. Furthermore, the connector installation part 121 is formed so that the insertion ports 25 at both ends of the optical fiber connector A are exposed to the outside.

  As shown in FIGS. 1 to 3, each holder installation portion 122 is formed with a track groove 123 that is recessed from the upper side of the installation table 120 and extends in the arrangement direction of the connector installation portion 121 and the holder installation portion 122. The optical fiber holder 110 is accommodated in the track groove 123. Further, the moving direction of the optical fiber holder 110 accommodated in the track groove 123 is restricted only in the arrangement direction of the connector setting portion 121 and the holder setting portion 122 by the inner surface in the width direction of the track groove 123. Each holder installation portion 122 is formed with a pair of locking projections 124 protruding from the pair of inner side surfaces of the raceway groove 123. The pair of locking protrusions 124 are formed at positions spaced above the bottom surface of the raceway groove 123.

Furthermore, the installation stand 120 includes a pair of fiber guide units 130 disposed between the connector installation unit 121 and each holder installation unit 122, as shown in FIGS. Each fiber guide unit 130 includes a fixed guide portion 131 that is integrally fixed to the installation table 120, and movable guide units (fiber guide units) 132 and 133 that are provided so as to be movable with respect to the installation table 120.
The fixed guide part 131 is provided so as to abut on the end of the optical fiber connector A installed in the connector installation part 121 where the insertion port 25 opens. The fixed guide portion 131 includes a main body portion 141 formed integrally with the installation base 120 and a lid portion 142 that is rotatably connected to the main body portion 141.

  A groove portion 143 such as a V-groove, U-groove, or round groove extending in the moving direction of the optical fiber holder 110 in the holder installation portion 122 is formed on the upper surface of the main body portion 141 facing the lid body portion 142. The groove 143 is formed to have a size that allows at least a part of the optical fiber 1 to enter, and is continuous with the guide hole 28 of the optical fiber connector A installed in the connector installation unit 121. The main body portion 141 is formed with a guide wall portion 144 that protrudes from the upper surface thereof. The guide wall 144 is formed with a V-shaped guide groove 145 that is recessed from the tip in the protruding direction. The bottom of the guide groove 145 is connected to the groove 143 described above, and plays a role of guiding the optical fiber 1 to the groove 143.

The lid part 142 is rotatable between an interposition position 142A where the optical fiber 1 is interposed between the cover part 142 and the main body part 141, and an open position 142B spaced from the upper surface of the main body part 141. (Movable). In the present embodiment, an insertion hole 146 through which the optical fiber is inserted is configured by the groove portion 143 formed on the upper surface of the main body portion 141 and the lid portion 142 disposed at the interposed position 142A. The insertion hole 146 communicates with the guide hole 28 of the optical fiber connector A disposed in the connector installation unit 121.
An accommodation recess 147 that accommodates the guide wall portion 144 is formed on the facing surface of the lid portion 142 that faces the upper surface of the main body portion 141 in a state of being disposed at the interposition position 142A. In the fixed guide portion 131 of the present embodiment, the lid body portion 142 is formed of a magnetic material in order to hold the lid body portion 142 at the interposed position 142A, and the lid body portion 142 disposed at the interposed position 142A is provided. Although the magnet 148 to be attracted is provided on the upper surface of the main body 141, the structure for holding the lid 142 at the interposed position 142A is not limited thereto.

The movable guide portions 132 and 133 are provided between the fixed guide portion 131 and the holder installation portion 122 and are movable in the moving direction of the optical fiber holder 110. In the present embodiment, a plurality (two in the illustrated example) of movable guide portions 132 and 133 are arranged in the moving direction of the optical fiber holder 110. Similar to the fixed guide portion 131, the movable guide portions 132 and 133 include main body portions 151 and 161 and lid body portions 152 and 162 that are rotatably connected to the main body portions 151 and 161.
Groove portions 153 and 163 such as a V-groove, U-groove, and round groove extending in the moving direction of the optical fiber holder 110 in the holder installation portion 122 are formed on the upper surfaces of the main body portions 151 and 161. The grooves 153 and 163 are formed in a size that allows at least a part of the optical fiber 1 to enter. Further, the groove portions 153 and 163 are formed so as to be positioned on the same straight line as the groove portions 153 and 163 of the fixed guide portion 131 described above. The main body portions 151 and 161 are formed with guide wall portions 154 and 164 having V-shaped guide grooves 155 and 165 similar to the fixed guide portion 131.

  Similarly to the case of the fixed guide portion 131, the lid portions 152 and 162 cover the upper surfaces of the main body portions 151 and 161, and the interposition positions 152A and 162A for interposing the optical fiber 1 between the main body portions 151 and 161, It is rotatable (movable) between open positions 152B and 162B separated from the upper surfaces of the main body portions 151 and 161. Further, through holes 156 and 166 through which the optical fiber 1 is inserted by the groove portions 153 and 163 formed on the upper surfaces of the main body portions 151 and 161 and the opposing surfaces of the lid portions 152 and 162 disposed at the interposition positions 152A and 162A. Is configured. The insertion holes 156 and 166 can be communicated with the guide hole 28 of the optical fiber connector A disposed in the connector installation part 121 via the insertion hole 146 of the fixed guide part 131. In addition, on the opposing surfaces of the lid portions 152 and 162, housing recesses 157 and 167 for housing the guide wall portions 154 and 164 are formed in the same manner as the fixed guide portion 131. In the movable guide portions 132 and 133 of the present embodiment, the lid portions 152 and 162 are formed of a magnetic material as in the case of the fixed guide portion 131, and the upper surfaces of the main body portions 151 and 161 are provided at the interposition positions 152A and 162A. Although the magnets 158 and 168 for attracting the arranged lid body portions 152 and 162 are provided, the structure for holding the lid body portions 152 and 162 at the interposed positions 152A and 162A is not limited thereto.

  Coil springs 134 and 135 are provided between the fixed guide portion 131 and the movable guide portions 132 and 133. The coil springs 134 and 135 urge the movable guide portions 132 and 133 in a direction in which the movable guide portions 132 and 133 are separated from the connector installation portion 121 (opposite to the insertion direction of the optical fiber 1). In the present embodiment, the first movable guide portion 132 arranged at the position farthest from the fixed guide portion 131 is urged by the first coil spring 134, and between the fixed guide portion 131 and the first movable guide portion 132. The arranged second movable guide portion 133 is biased by the second coil spring 135.

The installation base 120 is provided with a guide positioning member 137 that sandwiches the plurality of movable guide portions 132 and 133 with the fixed guide portion 131. The guide positioning member 137 supports the movable guide portions 132 and 133 biased by the coil springs 134 and 135 at predetermined positions. The guide positioning member 137 has a first support surface 137A that supports the first movable guide portion 132 and a second support surface 137B that supports the second movable guide portion 133.
The second movable guide portion 133 sandwiched between the second coil spring 135 and the second support surface 137B of the guide positioning member 137 is positioned at a position spaced from the fixed guide portion 131 by a gap G2. Further, the first movable guide portion 132 sandwiched between the first coil spring 134 and the first support surface 137A of the guide positioning member 137 is positioned at a position spaced from the second movable guide portion 133 by a gap G1. .

These gaps G1 and G2 are used when the optical fiber 1 is inserted into the optical fiber connector A, between the two movable guide portions 132 and 133, or between the second movable guide portion 133 and the fixed guide portion 131. The fiber 1 is set so as not to bend.
Specifically, in the present embodiment, when the optical fiber 1 is inserted into the optical fiber connector A including the coating removing unit 5, the optical fiber 1 is inserted by removing the coating 12 in the coating removing unit 5. Resistance to force occurs. When such resistance occurs, the optical fiber 1 may be bent and buckled at the intervals G1 and G2 when inserted.
With respect to such a buckling phenomenon, as shown in FIG. 16, the buckling yield load (maximum insertion force) that causes the optical fiber 1 to buckle at the intervals G1 and G2 as the intervals G1 and G2 (deflection width) are small. Is generally known to grow. Therefore, the intervals G1 and G2 are preferably set to 1.5 mm or less, for example, so that the optical fiber 1 does not bend at the intervals G1 and G2 even if the insertion force of the optical fiber 1 is large.

  As shown in FIGS. 12 and 14, the optical fiber holder 110 is installed in the connector installation section 121 in the state in which the optical fiber holder 110 is installed in the holder installation section 122 by the track groove 123 of the installation table 120 described above. It is possible to move in the direction of approaching and separating. Regarding the optical fiber holder 110, the direction approaching the connector installation part 121 may be referred to as the front, and the opposite direction may be referred to as the rear.

As shown in FIG. 5, the optical fiber holder 110 includes a base portion 111 and a lid 112 that is rotatably connected to the base portion 111.
A positioning groove 113 such as a V-groove, U-groove, or round groove extending in the moving direction of the optical fiber holder 110 in the holder installation portion 122 is formed on the upper surface of the base portion 111. The positioning groove 113 is formed in a size that allows at least a part of the optical fiber 1 to enter. The base 111 is formed with a guide wall 114 that protrudes from the upper surface thereof. The guide wall 114 is formed with a V-shaped guide groove 114a that is recessed from the front end in the protruding direction. The bottom of the guide groove 114 a is continuous with the positioning groove 113 described above, and plays a role of guiding the optical fiber 1 to the positioning groove 113. In the illustrated example, the guide wall portion 114 is provided at the front side end portion of the base portion 111, but is not limited thereto.

  A pair of engaging recesses 115 that are recessed inward in the width direction and extend in the moving direction are formed on both side portions of the base portion 111 in the width direction. When the pair of engaging protrusions 124 formed on the installation table 120 are engaged with the pair of engaging recesses 115, the optical fiber holder 110 is installed in the butt connection of the pair of optical fibers 1. It can be prevented from coming off from 120. Note that notches 116 that divide the engaging recess 115 into the front side and the rear side are formed on both sides in the width direction of the base portion 111. As a result, when the optical fiber holder 110 is installed in the holder installation part 122, the engagement protrusion 124 is easily engaged with the engagement recess 115 by causing the engagement protrusion 124 of the installation table 120 to enter the notch 116. Can be combined.

  The lid 112 is rotatable between a holding position 112 </ b> A that covers the upper surface of the base portion 111 and sandwiches the optical fiber with the base portion 111 and an open position 112 </ b> B that is separated from the upper surface of the base portion 111. Yes. A clamping protrusion 117 that presses down the optical fiber 1 disposed on the positioning groove 113 is formed on the facing surface of the lid body 112 that faces the top surface of the base portion 111 in the state of being disposed at the sandwiching position 112A. In the present embodiment, magnets provided on the base portion 111 and the lid body 112 are employed as a structure for pressing the clamping protrusion 117 of the lid body 112 arranged at the clamping position 112A against the upper surface of the base portion 111. However, it is not limited to this.

The optical fiber holder 110 configured as described above is arranged in the holder installation portion 122, and the distal end of the optical fiber 1 held in the optical fiber holder 110 in the insertion direction is the insertion port 25 of the optical fiber connector A. It is movable between an insertion start position 110A (see FIGS. 4 and 12) located in front and an insertion end position 110B (see FIG. 14 (b)) where an optical fiber is butt-connected in the optical fiber connector A. It has become.
The insertion start position 110 </ b> A is a position where the optical fiber holder 110 is sufficiently separated from the movable guide portions 132 and 133. The insertion end position 110 </ b> B is a position where the optical fiber holder 110 sandwiches the movable guide portions 132 and 133 with the fixed guide portion 131 against the urging force of the coil springs 134 and 135.

  As shown in FIGS. 1, 2, 6, and 10, the installation table 120 is configured so that the wedge member 170 can move forward and backward with respect to the wedge insertion port 27 of the optical fiber connector A installed in the connector installation unit 121. Is attached. The wedge member 170 includes a wedge main body 171 and a wedge piece 172 that protrudes from the wedge main body 171 toward the connector installation portion 121. The wedge pieces 172 are inserted into the wedge insertion port 27 and are formed in the wedge main body 171 so as to have an outer shape, a position, and a number corresponding to the wedge insertion port 27.

As shown in FIGS. 1 to 4 and 14, the optical fiber connection tool 100 of the present embodiment includes a holder fixing mechanism 180 that fixes the optical fiber holder 110 to the insertion end position 110 </ b> B (predetermined position) in addition to the above configuration. Prepare. The holder fixing mechanism 180 of this embodiment includes a pressing pin 181 and a third coil spring 182. The holding pin 181 is accommodated in a recess that is recessed from the bottom surface of the track groove 123 of the installation table 120, and can be projected and retracted with respect to the bottom surface of the track groove 123. The third coil spring 182 biases the pressing pin 181 so that the pressing pin 181 protrudes from the bottom surface of the raceway groove 123.
The holder fixing mechanism 180 is configured such that the holding pin 181 protrudes from the bottom surface of the raceway groove 123 in a state where the optical fiber holder 110 is arranged at the insertion end position 110B, so that the rear end of the base portion 111 of the optical fiber holder 110 is obtained. Support the part. Thereby, it is possible to prevent the optical fiber holder 110 from moving from the insertion end position 110 </ b> B toward the insertion start position 110 </ b> A by the urging force of the first coil spring 134 or the second coil spring 135. Since the operation lever 183 is fixed to the pressing pin 181, the fixing of the optical fiber holder 110 by the holder fixing mechanism 180 is released by immersing the pressing pin 181 into the bottom surface of the raceway groove 123 by the operation lever 183. be able to.

The base portion 111 of the optical fiber holder 110 is formed with a housing recess 118 that is recessed from the lower surface thereof. In a state where the optical fiber holder 110 is arranged at the insertion start position 110 </ b> A, the protruding portion of the pressing pin 181 is accommodated in the accommodating recess 118, so that the optical fiber holder 110 is pulled out of the holder installation portion 122 by the holder fixing mechanism 180. Can be prevented.
In the housing recess 118, an inclined surface 118a is formed such that the depth becomes shallower toward the rear side from the portion in which the holding pin 181 is housed in a state where the optical fiber holder 110 is arranged at the insertion start position 110A. Therefore, when the optical fiber holder 110 is moved from the insertion start position 110A toward the insertion end position 110B (see FIGS. 12 and 14), the pressing pin 181 is immersed in the bottom surface of the track groove 123 by the inclined surface 118a. When the optical fiber holder 110 reaches the insertion end position 110B, it can protrude from the bottom surface of the track groove 123.

[Optical fiber connection method]
Next, an optical fiber connection method in which the optical fiber 1 (bare optical fiber 14) is butt-connected inside the optical fiber connector A using the optical fiber connection tool 100 (jig) of the present embodiment will be described.
First, the optical fiber connector A is installed in the connector installation unit 121 of the installation table 120, and the optical fiber holder 110 holding the optical fiber 1 is installed in the pair of holder installation units 122 (insertion start position 110A) ( (See FIG. 1 etc.) When the optical fiber holder 110 is installed, the lid portions 142, 152, 162 of the fixed guide portion 131 and the movable guide portions 132, 133 are arranged at the open positions 142B, 152B, 162B (see FIG. 3). The portion of the optical fiber 1 extending from the optical fiber holder 110 toward the connector installation portion 121 is disposed in the groove portions 143, 153, and 163 of the fixed guide portion 131 and the movable guide portions 132 and 133. Thereafter, the lid portions 142, 152, 162 are arranged at the interposition positions 142A, 152A, 162A, so that the optical fiber 1 is inserted into the insertion holes 146, 156, 166 of the fixed guide portion 131 and the movable guide portions 132, 133 ( Held) (see FIG. 4).
Further, by moving the wedge member 170 toward the optical fiber connector A installed in the connector installation unit 121, the wedge piece 172 is inserted into the wedge insertion port 27, and the base member 2 and the two covering gripping lids are inserted. 32 between the base member 2 and the central lid 31 are somewhat opened (see FIG. 11 and the like). Thereby, the optical fiber 1 can easily enter the introduction path 24, and the bare optical fiber 14 can easily enter the alignment groove 20c (see FIGS. 13 and 15).

Next, as shown in FIG. 12, one optical fiber holder 110 (the left optical fiber holder 110 in FIGS. 12 and 14) is moved from the insertion start position 110A to the insertion end position 110B.
Specifically, one optical fiber holder 110 moved from the insertion start position 110A has reached a position with a gap G3 with respect to the first movable guide portion 132, as shown in FIG. In this case, the tip portion of one optical fiber 1 inserted into the optical fiber connector A reaches one coating removal section 5 (the left coating removal section 5 in FIG. 13). The gap G3 is not bent between the optical fiber holder 110 and the first movable guide portion 132 by the force of inserting the optical fiber 1 as in the case of the gaps G1 and G2 (see FIG. 4). For this reason, even if one optical fiber holder 110 is moved from the position shown in FIG. 12A toward the insertion end position 110B, one optical fiber 1 is one optical fiber holder 110. Between the first movable guide portion 132 (interval G3), between the first movable guide portion 132 and the second movable guide portion 133 (interval G2), and between the second movable guide portion 133 and the fixed guide portion 131. It does not bend in the interval (interval G1).

When one optical fiber holder 110 is further moved from the position shown in FIG. 12A to the position where it abuts on the first movable guide portion 132 as shown in FIG. The removal of the coating 12 by the coating removing unit 5 is started, and the extraction of one bare optical fiber 14 is started (see FIG. 13).
When the optical fiber holder 110 is further moved from the position shown in FIG. 12B toward the insertion end position 110B, as shown in FIG. 12C, the first movable guide portion 132 is moved to the first coil spring. It moves integrally with the optical fiber holder 110 against the urging force of 134, and comes into contact with the second movable guide portion 133. During this movement, the removal of the covering 12 by one of the covering removing portions 5 further proceeds, and the one bare optical fiber 14 is inserted into the aligning groove 20c (see FIG. 13). Even during this movement, one optical fiber 1 is not bent between the first movable guide portion 132 and the second movable guide portion 133 and between the second movable guide portion 133 and the fixed guide portion 131. .

Finally, when one of the optical fiber holders 110 is moved from the position shown in FIG. 12C to the insertion end position 110B as shown in FIG. 12D, the first and second movable guide portions 132 and 133 are moved. However, it moves integrally with one optical fiber holder 110 against the urging force of the first and second coil springs 135, and the second movable guide portion 133 comes into contact with the fixed guide portion 131. At the time of this movement, as shown in FIG. 13, the removal of the coating 12 by the one coating removal unit 5 further proceeds, and the one bare optical fiber 14 further proceeds in the alignment groove 20c, The leading end portion of the bare optical fiber 14 reaches a butt position with the other bare optical fiber 14 described later.
Even during this movement, one optical fiber 1 is not bent between the second movable guide portion 133 and the fixed guide portion 131. The one optical fiber holder 110 that has reached the insertion end position 110B is held at the insertion end position 110B by the holder fixing mechanism 180.

Then, as shown in FIG. 14, the lid portions 142, 152, 162 of the fiber guide unit 130 are opened, and the other optical fiber holder 110 (in FIGS. The right optical fiber holder 110) is moved from the insertion start position 110A to the insertion end position 110B.
That is, when the other optical fiber holder 110 moved from the insertion start position 110A arrives at a position having a gap G3 with respect to the first movable guide portion 132 as shown in FIG. The distal end portion of the other optical fiber 1 inserted into the fiber connector A reaches the other coating removing unit 5 (the right coating removing unit 5 in FIG. 15).
Then, the other optical fiber holder 110 is moved from the position shown in FIG. 14 (a) to the insertion end position 110B as shown in FIG. 14 (b), thereby removing the other coating as shown in FIG. The coating 12 is removed by the portion 5, and the other bare optical fiber 14 is inserted into the aligning groove 20c, and its tip portion is butt-connected to the tip portion of the one bare optical fiber 14 (FIG. 15). reference).
When the other optical fiber holder 110 is moved in this way, the other optical fiber 1 is moved between the other optical fiber holder 110 and the fixed guide portion 131 as in the case of the one optical fiber holder 110 described above. There is no bending between them.

When the two bare optical fibers 14 are butt-connected as described above, one optical fiber 1 is connected to one optical fiber holder 110 and the optical fiber connector A as shown in FIG. It bends between and deforms.
Since the abutting force is applied to the butted portions of the two bare optical fibers 14 by the elastic force due to the bending deformation, the two optical fibers 1 can be reliably optically connected.

After the two bare optical fibers 14 are butt-connected as described above, the wedge member 170 is separated from the optical fiber connector A and the wedge piece 172 is pulled out from the wedge insertion port 27. As a result, the base member 2 and the two covering grip covers 32 and the central cover 31 are closed, and the two optical fibers 1 including the two bare optical fibers 14 are connected to the optical fiber connector by the clamping force of the clamp portion 4. Clamped and held in A.
Finally, the lid 112, the fixed guide 131, and the lids 142, 152, 162 of the movable guides 132, 133 of all the optical fiber holders 110 are opened, and the optical fiber connector A and the connected two are connected. One optical fiber 1 is removed from the optical fiber connection tool 100.

As described above, according to the optical fiber connection tool 100 and the connection method of the present embodiment, the optical fiber 1 is moved by moving the optical fiber holder 110 holding the optical fiber 1 toward the optical fiber connector A. When the optical fiber 1 is inserted into the optical fiber connector A, the optical fiber 1 is held in the insertion holes 146, 156, 166 of the movable guide portions 132 and 133 and the fixed guide portion 131 between the optical fiber holder 110 and the optical fiber connector A. Therefore, even if the resistance against the insertion force of the optical fiber 1 is increased by removing the coating 12 inside the optical fiber connector A, the optical fiber connector 110 and the optical fiber connector A can receive light. It is possible to prevent the fiber 1 from being bent or buckled.
Further, in the state before the optical fiber 1 is inserted, appropriate gaps G1 and G2 are set between the two movable guide portions 132 and 133 and between the second movable guide portion 133 and the fixed guide portion 131. Therefore, after the optical fiber holder 110 comes into contact with the first movable guide part 132 or after the two movable guide parts 132 and 133 come into contact with each other, the movable guide parts 132 and 133 are moved together with the optical fiber holder 110 to the optical fiber. Further movement toward the connector A is possible. That is, the insertion length of the optical fiber 1 (bare optical fiber 14) with respect to the optical fiber connector A can be extended.

  Furthermore, in the optical fiber connection tool 100 of the present embodiment, the first and second movable guide portions 132 and 133 are urged in the direction opposite to the insertion direction of the optical fiber 1 by the first and second coil springs 134 and 135. Therefore, after the butt connection between the optical fibers 1 is completed, the first and second movable guide portions 132 and 133 can be moved by the urging force of the first and second coil springs 134 and 135 only by separating the optical fiber holder 110. It can be easily returned to the initial position. That is, the connection work between the optical fibers 1 can be repeated in a short time.

  Further, since the optical fiber connection tool 100 of the present embodiment includes the holder fixing mechanism 180, it is not necessary to hold the optical fiber holder 110 with fingers or the like in a state where the optical fiber holder 110 is arranged at the insertion end position 110B. Can be easily performed. For example, by holding one optical fiber holder 110 at the insertion end position 110B by the holder fixing mechanism 180, the other optical fiber holder 110 can be easily moved (see FIG. 14). Thereby, the butt connection of the optical fiber 1 (bare optical fiber 14) can be easily performed.

  Furthermore, in the optical fiber connecting tool 100 of the present embodiment, the fixed guide portion 131 and the movable guide portions 132 and 133 are configured by the main body portion and the lid portions 142, 152, and 162, and therefore, as shown in FIG. Thus, when the two optical fibers 1 (bare optical fiber 14) are butt-connected, the two optical fibers 1 can be reliably optically connected by utilizing the curved deformation of the optical fiber 1.

17 and 18 show modifications of the optical fiber connecting tool.
As shown in FIG. 12D and the like, the optical fiber connection tool 100 employs a structure in which the pressing pin 181 prevents the optical fiber holder 110 from moving backward when the optical fiber holder 110 reaches the insertion end position 110B. However, in the present invention, a structure in which the optical fiber holder 110 can be retracted by a predetermined distance from the insertion end position 110B may be adopted.

17 and 18 show examples of structures in which the optical fiber holder 110 can be retracted from the insertion end position 110B.
When this structure is adopted, the projection length of the optical fiber 1 from the optical fiber holder 110 is such that the sufficient abutting force is obtained with the optical fiber holder 110 retracted, as shown in FIG. It is desirable to set the length longer than that in the case of the fiber connection tool 100.
As shown in FIGS. 17A and 18, in this example, a pressing pin 181 </ b> A having a notch 184 in the front portion is used instead of the pressing pin 181 (see FIG. 12D).
For this reason, the optical fiber holder 110 starts from the insertion end position 110B shown in FIGS. 17A and 18 (solid line), as shown in FIGS. 17B and 18 (virtual line). It can be retracted until it reaches the front).
In this example, the optical fiber holder 110 can be retracted by the length (distance L2) of the notch 184 in the front-rear direction. The distance L2 is preferably 0.3 to 1 mm, for example.
At the position where the optical fiber holder 110 is retracted, the first movable guide portion 132 is in contact with the second movable guide portion 133, but the second movable guide portion 133 is separated from the fixed guide portion 131.

In this structure, since the optical fiber holder 110 can be retracted from the insertion end position 110B, even when the coating 12 peeled off from the bare optical fiber 14 is compressed in the coating removing portion 5, the restoring force of the coating 12 is restored. Can be mitigated and the abutting force of the optical fiber 1 can be prevented from decreasing.
In particular, in a low temperature environment, the restoring force of the coating 12 in a compressed state tends to increase. However, by adopting this structure, the abutting force of the optical fiber 1 is prevented from being lowered and connection reliability is improved. Can do.

The illustrated structure is a structure that allows the optical fiber holder 110 to be retracted by forming a notch 184 in the holding pin 181A. However, the structure that allows the optical fiber holder 110 to be retracted is not limited thereto. .
For example, even when the pressing pin 181 without a notch is used, if it is provided at a position closer to the rear, the optical fiber holder 110 can be retracted from the insertion end position 110B.

Although the details of the present invention have been described above by the embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.
For example, the fixed guide portion 131 and the movable guide portions 132 and 133 are configured by main body portions 141, 151, and 161 and lid portions 142, 152, and 162, but at least through holes 146 and 156 through which the optical fiber 1 is inserted. , 166. Therefore, for example, after the optical fiber 1 is butt-connected, the optical fiber 1 held in the insertion holes 146, 156, 166 is extracted from the insertion holes 146, 156, 166 to the fixed guide part 131 and the movable guide parts 132, 133. A slit may be formed.

Further, the fiber guide unit 130 includes the fixed guide portion 131 and the plurality of movable guide portions 132 and 133, but it is sufficient that the fiber guide unit 130 includes at least one movable guide portion.
In addition, the optical fiber connector handled in the optical fiber connection tool 100 of the above embodiment has a configuration in which two optical fibers inserted from both ends are connected to each other. For example, it is provided inside like an optical connector. The configuration may be such that one optical fiber 1 is butt-connected to the built-in optical fiber. In this case, the optical fiber holder 110 and the fiber guide unit 130 are not limited to being arranged at both ends of the connector setting unit 121 as in the above embodiment, but may be arranged only at one end of the connector setting unit 121, for example. Good.

DESCRIPTION OF SYMBOLS A ... Optical fiber connector, 5 ... Cover removal part, 25 ... Insertion port, 1 ... Optical fiber, 14 ... Bare optical fiber, 100 ... Optical fiber connection tool (jig), 110 ... Optical fiber holder, 120 ... Installation stand 121 ... Connector installation part, 122 ... Holder installation part, 130 ... Fiber guide unit, 132,133 ... Movable guide part (fiber guide part), 134 ... First coil spring, 135 ... Second coil spring, 151,161 ... body part, 152, 162 ... lid body part, 152A, 162A ... interposition position, 152B, 162B ... open position, 153, 163 ... groove part, 156, 166 ... insertion hole, 170 ... wedge member, 180 ... holder fixing mechanism.

Claims (6)

An optical fiber connection tool for use in an operation of inserting a pair of optical fibers into the optical fiber connector from both ends thereof and connecting the pair of optical fibers to each other inside the optical fiber connector,
A pair of optical fiber holders arranged at both ends of the optical fiber connector, respectively holding the pair of optical fibers;
An installation base for installing the optical fiber connector and the pair of optical fiber holders,
The optical fiber connector includes at least a coating removal unit for one optical fiber of the pair of optical fibers,
One optical fiber holder for the one optical fiber is movable in a direction approaching and separating from the optical fiber connector in a state where the optical fiber holder is installed on the installation table,
The installation base is provided between the one optical fiber holder and the insertion port of the optical fiber connector, and includes a fiber guide portion having an insertion hole through which the one optical fiber is inserted.
The insertion ports at both ends of the optical fiber connector have guide portions that narrow toward the inside,
The fiber guide portion is adjacent to the optical fiber connector, and is fixed between the first fiber guide portion and the first fiber guide portion and the one optical fiber holder . A second fiber guide portion reversibly movable in the moving direction of the optical fiber holder ,
The interval between the optical fiber connector and the first fiber guide portion is set in advance to a predetermined value or less so that the one optical fiber does not buckle,
The distance between adjacent members of the one optical fiber holder, the second fiber guide portion, and the first fiber guide portion is moved by moving the one optical fiber holder toward the optical fiber connector. Can be maintained at a predetermined value or less to the extent that the one optical fiber does not buckle.
The first fiber guide portion and the second fiber guide portion are reversible between a main body portion, an interposed position where the optical fiber is interposed between the main body portion, and an open position separated from the main body portion. A lid portion that is movable,
A groove portion constituting the insertion hole is formed in at least one of the opposing surfaces of the main body portion and the lid portion facing each other in a state of being arranged at the interposition position,
In order to butt-connect the one optical fiber whose coating has been removed by the coating removal section, the lid portions of the first fiber guide portion and the second fiber guide portion are all moved to an open position, An optical fiber connecting tool characterized in that it can bend the optical fiber.   The optical fiber connection tool according to claim 1, wherein the fiber guide portion is biased in a direction opposite to an insertion direction of the optical fiber.   The holder fixing mechanism which fixes the said optical fiber holder to a predetermined position in the state which inserted | pinched the said fiber guide part between the said optical fiber connector and the said optical fiber holder of Claim 2 characterized by the above-mentioned. Optical fiber connection tool. Before Symbol fiber guide section, the optical fiber connection tool according to any one of claims 1 to 3, characterized in that arranged on both end portions of the optical fiber connector. The fiber guide section, the optical fiber connection tool according to any one of claims 1 to 4, characterized in that it is arrayed in the moving direction of the optical fiber holder. An optical fiber connection method in which a pair of optical fibers are inserted into the optical fiber connector from both ends thereof, and the pair of optical fibers are butt-connected within the optical fiber connector,
The optical fiber connector having at least a coating removal unit for one of the pair of optical fibers, an installation unit for installing the optical fiber connector, and the optical fiber connection installed in the installation unit A pair of optical fiber holders that are provided at both ends of the optical fiber connector and hold the pair of optical fibers, and are provided between the installation section and the optical fiber holder. A first fiber guide portion fixed to the installation portion adjacent to the optical fiber connector, and movement of the one optical fiber holder between the first fiber guide portion and the one optical fiber holder. A fiber guide portion having a second fiber guide portion that is reversibly movable in a direction ,
An interval between the optical fiber connector and the first fiber guide portion is preset to a predetermined value or less such that the one optical fiber does not buckle, and the one optical fiber holder and the second fiber guide portion And the interval between the adjacent members of the first fiber guide part while moving the one optical fiber holder toward the optical fiber connector and removing the one optical fiber by the coating removing part. The one optical fiber can be maintained below a predetermined value that does not buckle, and the first fiber guide portion and the second fiber guide portion are between the main body portion and the main body portion. A lid portion that is reversibly movable between an intervening position for interposing the optical fiber and an open position spaced from the main body portion, and is arranged in a state of being disposed at the intervening position. Said body portion facing and in at least one of the opposing surfaces of the lid portion, the <br/> jig groove constituting an insertion hole for inserting said one of the optical fiber is formed using a,
When the pair of optical fibers held by the pair of optical fiber holders and removed by the coating removal unit are inserted into the optical fiber connector, and the pair of optical fibers are butt-connected,
Wherein the first fiber guide section and the second fiber guide section holding the pair of optical fibers, by moving the lid portions to all the open position in the first fiber guide section and the second fiber guide section, A method of connecting an optical fiber, wherein the one optical fiber is bent .

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