JPH10123347A - Optical fiber mechanical splicing device and its optical fiber connecting operation tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the optical connecting operation tool which can make an efficient mechanical splicing connection of optical fibers. SOLUTION: The optical fiber connecting operation tool 22 has a cylinder rod 25 constituted so that the rod can freely move forward and backward, and the rod moves forward and backward through the rotation and reversing of a rotary lever 33. Associatively with the cylinder rod 25, wedge claws 27a, 27b, and 27c are moved forward and inserted into slits 15a, 15b, and 15c to open respective pressure members 3a, 2, and 3b; and optical fibers are inserted into an optical fiber connection groove formed on a mechanical splicing substrate 1 from both the sides and the tip end sides of the optical fibers are made to abut against each other. Then a press-in operation part 31 is pushed to move the piston in the cylinder rod 25 forward, thereby supplying the matching agent in the cylinder rod 25 into the optical fiber connection groove from a nozzle 30. When the lever 33 is reversed, the wedge claws 27a, 27b, and 27c exit from the slits 15a, 15b, and 15c and the pressure members 3a, 2, and 3b are closed with the pressing forces of spring arms 17a, 17b, and 17c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber mechanical splicer for butt-connecting optical fibers without using an adhesive, and an optical fiber mechanical splicer for connecting optical fibers using the optical fiber mechanical splicer. The present invention relates to a work tool for connecting an optical fiber.

[0002]

2. Description of the Related Art Recently, there has been used an optical fiber mechanical splicing device for butt-connecting optical fibers without using an adhesive. In this optical fiber mechanical splicing device, a groove for connecting an optical fiber is formed on a mechanical splice substrate, and optical fibers are inserted into the groove from both right and left sides and butt. And the optical fiber in the butt connection state is clamped and fixed.

[0003] By using this kind of optical fiber mechanical splicing device, the exchange connection of the optical fiber can be easily performed, and the maintenance and inspection work becomes very easy.

[0004]

However, in the conventional optical fiber mechanical splicing apparatus, the operation of connecting the optical fiber at the connection site is difficult, and the efficiency of the connection operation is low.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a first object of the present invention is to provide an optical fiber mechanical splicing device which can easily connect optical fibers. It is an object of the present invention to provide an operation tool for connecting an optical fiber, which facilitates connection work of an optical fiber.

[0006]

In order to achieve the above object, the present invention takes the following measures. That is,
The invention of the optical fiber mechanical splicing device is such that a holding member is put on a mechanical splice substrate on which a connection groove for an optical fiber is formed, and the holding member and the mechanical splice substrate are held by a U-shaped spring clamp. The member can be opened and closed with respect to the mechanical splice substrate at the open end side of the U-shape of the spring clamp, and a slit is provided at the joint portion between the pressing member and the mechanical splice substrate at the open / close end side of the pressing member. The slit forming portion and the connection groove for the optical fiber are connected to each other by a matching agent guiding groove, which is a means for solving the problem.

In a first aspect of the present invention, there is provided a working tool for connecting an optical fiber, wherein a pressing member is put on a mechanical splice substrate in which a connecting groove for an optical fiber is formed, and the pressing member and the mechanical splice substrate are U-shaped. The holding member is sandwiched by a spring clamp having a shape, and the holding member can be opened and closed with respect to the mechanical splice substrate at the U-shaped opening end side of the spring clamp, and the holding member and the mechanical splice substrate are provided at the opening / closing end side of the holding member. The holding member is opened by using the slit of the optical fiber mechanical device in which the slit is provided at the joint portion of the optical fiber, the optical fiber is inserted into the connection groove on the mechanical splice substrate and butt, and the optical fiber in the butt state is Close the holding member, hold the holding member, and mechanically splice the optical fiber. An optical fiber connection working tool for an optical fiber mechanical splicing device for performing a connection, wherein a tip is thinner than a slit upper and lower opening width of the optical fiber mechanical splicing device and a base end is thicker than an upper and lower opening width of the slit. A wedge claw having a tapered surface, a wedge claw advancing and retracting mechanism, a wedge claw advancing and retreating mechanism for moving the wedge claw forward by inserting and inserting the wedge claw into the slit to open the pressing member and retreat the wedge claw to close the pressing member; This is a means for solving the problem with a configuration having an advance / retreat movement operation unit for operating movement.

According to a second aspect of the present invention, there is provided a working tool for connecting an optical fiber, wherein a pressing member is put on a mechanical splice substrate in which a connecting groove for an optical fiber is formed, and the pressing member and the mechanical splice substrate are U-shaped. The holding member is sandwiched by a spring clamp having a shape, and the holding member can be opened and closed with respect to the mechanical splice substrate at the U-shaped opening end side of the spring clamp, and the holding member and the mechanical splice substrate are provided at the opening / closing end side of the holding member. The holding member is opened by using the slit of the optical fiber mechanical device in which the slit is provided at the joint portion of the optical fiber, the optical fiber is inserted into the connection groove on the mechanical splice substrate and butt, and the optical fiber in the butt state is Close the holding member, hold the holding member, and mechanically splice the optical fiber. An optical fiber connection working tool for an optical fiber mechanical splicing device for performing a connection, wherein the tip has a small diameter portion having a diameter smaller than the slit vertical opening width of the optical fiber mechanical splice device and a diameter larger than the vertical opening width of the slit. A cam rotor having a large-diameter portion smaller than the left and right widths of the slit, a cam rotor rotation shaft for opening and closing the holding member by rotating the cam rotor in a state inserted into the slit, and rotating the cam rotor rotation shaft This is a means for solving the problem with a configuration having a rotating operation section that performs the rotation.

Further, a third working tool for connecting an optical fiber is provided.
The invention of the first or second aspect of the optical fiber connection working tool
A wedge claw inserted into a slit of an optical fiber mechanical splice device or a matching agent through a matching agent guiding groove to a connection groove of the mechanical splice device of the present invention at the tip end side of the cam rotor. A nozzle is provided to discharge the nozzle, and a piston device for supplying and supplying a matching agent is connected to the nozzle to provide a means for solving the problem.

[0010] In the invention having the above structure, when an optical fiber is connected using an optical fiber mechanical splice device, a wedge claw or a cam rotor of a work tool for connecting an optical fiber is inserted into a slit of the optical fiber mechanical splice device. Then, the pressing member of the optical fiber mechanical splicing device is opened with respect to the mechanical splice substrate by advancing the wedge claw or rotating the cam rotor.

In this state, the optical fibers are inserted into the connection grooves on the mechanical splice substrate, and butted against each other in the connection grooves.

Next, the pressing member is closed by the elastic restoring force of the spring clamp, and the butt connection state is established by retreating the wedge claw and pulling out the wedge claw or rotating the cam rotor until the small-diameter portion is turned up and down the slit. The optical fiber is clamped and fixed in the connection groove by the mechanical splice substrate and the pressing member, and the connection operation of the optical fiber is completed.

In the configuration in which the working tool for optical fiber connection is provided with a nozzle, as described above, the matching agent is supplied by the piston device with the pressing member opened by the advance movement of the wedge claw or the rotation of the cam rotor. By the pressure feeding, the matching agent is discharged and supplied from the nozzle to the connection groove via the matching agent guide groove, and the connection characteristics of the optical fiber are improved.

According to the present invention, the pressing member is easily opened by inserting the wedge claw or the cam rotor of the working tool for optical fiber connection into the slit of the optical fiber mechanical splicing device so as to open the pressing member. ,
In addition, since the open state is maintained, the work of inserting the optical fiber into the connection groove from both the right and left sides is facilitated, and the work efficiency of the optical fiber connection is improved, and the object of the present invention is solved. Achieved.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show a first embodiment of an optical fiber mechanical splicing apparatus according to the present invention. This mechanical splicing device includes a mechanical splice substrate 1, a bare fiber pressing member 2, coating member pressing members 3a and 3b, and a clamp member 4.

The mechanical splice substrate 1 is made of a plate material such as plastic. As shown in FIG. 4, a central portion in the width direction is provided with an optical fiber core guide groove 5 and a covering portion fixing groove from both left and right sides toward the center. 6. The central bare fiber positioning groove 7 is connected in sequence to form a connecting groove. As shown in FIG. 11, the optical fiber for connection has the coating 8 on the distal end side removed and the bare optical fiber 10 exposed, and the optical fiber core guide groove 5 of the mechanical splice substrate 1 is The outside is a tapered hole having a large diameter.

The covering portion fixing groove 6 connected to the optical fiber core guide groove 5 is provided with the optical fiber core 11 shown in FIG.
Is formed in a V-shaped or U-shaped groove having a groove width equal to or less than the outer diameter of the covering portion 8. The center bare fiber positioning groove 7 is formed in a groove having a V-shaped or U-shaped cross section having a groove width equal to or less than the outer diameter of the bare optical fiber 10. The groove shape of
In accordance with the groove shape of the covering portion fixing groove 6 on both sides, if the covering portion fixing groove 6 is V-shaped, it will be V-shaped accordingly, and if the covering portion fixing groove 6 is U-shaped, it will be U-shaped accordingly. Is formed.

Notched concave portions 12a to 12c are formed at one side edge of the mechanical splice substrate 1 at positions corresponding to the coating portion fixing groove 6 and the bare fiber positioning groove 7, respectively.

As shown in FIGS. 2 (a) and 2 (c), the cover pressing members 3a and 3b are formed at the center in the width direction with pressing grooves 13 extending to the left and right sides. Reference numeral 13 is provided at a position opposing the coating portion fixing groove 6 of the mechanical splice substrate 1 in a state where the coating portion pressing members 3a and 3b are placed on the mechanical splice substrate 1 as shown in FIG.

As shown in FIG. 3, the pressing groove 13 has an inner groove depth which presses down the coating 8 of the optical fiber 11 accommodated in the coating fixing groove 6 of the mechanical splice substrate 1 from above. The pressurizing groove 13 has a tapered depth groove whose inlet side continuously increases in depth from the inside toward the insertion opening (outer end) of the optical fiber core wire. 13a. Notch recesses 14a, 14c are formed at one side edge of the covering portion pressing members 3a, 3b, and the notching recesses 14a of the covering portion pressing member 3a are formed.
a is a position facing the cutout concave portion 12a of the mechanical splice substrate 1 when the covering portion pressing member 3a is mounted on the mechanical splice substrate 1, and the slit 15a is formed by the cutout concave portions 12a and 14a (FIG. 1). ) Is formed, and similarly, a cutout concave portion of the coating portion pressing member 3b is formed.
14c and the cutout recess 12c of the mechanical splice substrate 1
Thereby, a slit 15c is formed.

The bare fiber holding member 2 is formed of a transparent material, and one side edge thereof is shown in FIG.
A notch recess 14b is formed as shown in FIG. When the bare fiber pressing member 2 is mounted on the mechanical splice substrate 1, the notch concave portion 14 b also fits into the notch concave portion 12 b of the mechanical splice substrate 1 as shown in FIG. With the recess 12b
The slit 15b is formed by 14b.

A matching agent guide groove 9 extending from the center of the cutout recess 14b toward the central region of the bare fiber holding member 2 is formed.
Is placed on the mechanical splice substrate 1, the bare fiber positioning groove 7 and the slit 15 b on the mechanical splice substrate 1 are directly connected by the matching agent guiding groove 9. Note that (a '), (b'),
(C ') is a side view of each of the figures (a), (b) and (c).

As shown in FIG. 1, the bare fiber pressing member 2 is formed on the mechanical fiber splicing substrate 1 above the bare fiber positioning groove 7, and the bare fiber pressing member 6 is coated on the left and right sides of the covering part fixing groove 6. The pressing members 3a and 3b are placed, and the mechanical splice substrate 1 and the pressing members 2, 3a and 3b are integrated by being clamped by a clamp member 4.

The clamp member 4 is formed in a U-shape.
The U-shaped bottom surface is in contact with the bottom surface of the mechanical splice substrate 1, and the U-shaped upper surface is separated into spring arms 17 a to 17 c by a slit 16, and the spring arm 17 a urges the covering portion pressing member 3 a. And
The spring arm 17b presses and urges the bare fiber pressing member 2, and the spring arm 17c presses the covering portion pressing member 3b.
Is urged. That is, the clamp member 4 is formed by a spring plate, and the spring arms 17a, 17b, 17c individually press and urge the corresponding holding members 3a, 2, 3b by the elastic restoring force of the spring plate. The pressing members 3a, 2 and 3b are openable and closable with respect to the mechanical splice substrate 1 with the slits 15a, 15b and 15c sides as opening and closing ends against the pressing force.

The central portion of the spring arm 17b, that is, the opening corresponding to the region where the bare optical fiber 10 inserted from both sides into the bare fiber positioning groove 7 of the mechanical splice substrate 1 is cut out. The transparent area of the bare fiber pressing member 2 surrounded by the opening 18 is an observation area of the bare optical fiber 10 butt-connected on the bare fiber positioning groove 7.

FIG. 5 shows a second embodiment of the optical fiber mechanical splicing apparatus according to the present invention. In the second embodiment, a lens 20 is provided in the central region of the bare fiber holding member 2, that is, the observation region, and the butt connection of the left and right bare optical fibers 10 on the bare fiber positioning groove 7 of the mechanical splice substrate 1 is performed. It is characterized in that it can be observed from the outside by enlarging the part, and the matching agent guide groove 9 is provided on the mechanical splice substrate 1 side, and other configurations are the same as those of the first embodiment. The same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof will not be repeated.

The lens 20 provided at the center of the bare fiber pressing member 2 is made of a plastic or glass convex lens, and the left and right bare optical fibers 10 abutting on the bare fiber positioning groove 7 of the mechanical splice substrate 1.
Connect the enlarged image of the connecting part of. Therefore, by observing the enlarged image visually from the outside, it is possible to easily confirm and correct a slight positional shift between the left and right bare optical fibers 10, and further improve the connection accuracy of the bare optical fibers 10. And the reliability of the optical fiber connection can be further ensured.

It should be noted that the optical fiber mechanical splicing device of each of the above embodiments is a mechanical splice substrate 1
Cover pressing members 3a, 3 for pressing the cover fixing groove 6 of FIG.
b and the bare fiber holding member 2 for holding the bare fiber positioning groove 7 are formed as separate members, but these holding members may be constituted by a common integral member.

Although the holding member is detachably mounted on the mechanical splice substrate 1, the mechanical splice substrate and the holding member are provided on the side (an end face side opposite to the opening / closing end) serving as the opening / closing fulcrum of the holding member. It may be joined by a hinge (hinge) so that it can be opened and closed freely.

Further, the clamp member 4 has a U-shaped bottom surface side as a common bottom wall, and the upper surface is formed separately by slits 16. However, the U-shaped bottom plate is also separated by these slits 16, and the covering portion is formed. The holding member 3a, the bare fiber holding member 2, and the covering portion holding member 3b may be held by separate and separate clamp members.
Of course, a U-shape may be provided over the entire length without providing the slit 16.

Further, in each of the above embodiments, an example in which a pair of left and right optical fiber core wires are connected has been described. However, the mechanical splice device of the present invention is applied to mechanical splice connection of a plurality of pairs of optical fiber core wires. You can do it. In the case of connecting a plurality of pairs of optical fiber cores, a series of optical fiber core guide grooves on the left and right sides of the mechanical splice substrate 1 are connected to a coating fixing groove and a bare fiber positioning groove from the optical fiber core guide groove toward the center. A plurality of connection grooves are formed in parallel, and the holding grooves are also provided on the coating part holding members 3a and 3b.
13 may be formed in parallel in accordance with this.

Further, the bare fiber pressing member 2 may be formed of an opaque member or the lens 20 may be omitted, and the pressing grooves 13 and the tapered depth grooves 13a of the covering portion pressing members 3a and 3b may be omitted. Sometimes.

FIG. 6 shows a first embodiment of an optical fiber connecting work tool for connecting an optical fiber using an optical fiber mechanical splicing device. In the figure, a work tool 22 for optical fiber connection and a device mounting table 23 are mounted above a work table 21. The optical fiber mechanical splicing device 19 of the above-described embodiment is detachably mounted on the upper side of the device mounting table 23.

The optical fiber connection work tool 22 has a cylinder rod 25 mounted on a body 24 fixedly mounted on a work table 21 so as to be movable forward and backward. A base end side of the optical fiber mechanical splice device 19 is attached to a front end side of the claw holding plate 26.
Are formed to extend toward the corresponding slits 15a, 15b, 15c, respectively.

The tip end of each of the wedge claws 27a, 27b, 27c has a toe 28 having a tapered surface that becomes thinner toward the tip end.
a, 28b, 28c.

The nozzle 30 is formed so as to protrude forward from the tip of the middle wedge claw 27b facing the slit 15b of the optical fiber mechanical splicing device 19, that is, from the tip of the toe 28b. It communicates with the inside of the cylinder of the cylinder rod 25 via a passage (not shown) provided inside the wedge claw 27b.

A piston provided with a press-fitting operation part 31 is inserted into the cylinder rod 25. By pushing this press-fitting operation part 31, the piston moves forward and the cylinder rod 25 is moved.
The matching agent (matching oil) injected into the cylinder is discharged from the nozzle 30. That is, the cylinder rod 25 and the piston have the same configuration as a normal syringe.

A rotating shaft 32 is rotatably mounted on one side surface of the body 24, and a rotating lever 33 is mounted on a protruding tip side of the rotating shaft 32. Rotating shaft 32
Is connected to a cylinder rod 25 via a conversion mechanism inside the body 24. This conversion mechanism is a pivot
It is constituted by a well-known mechanism that converts the forward / reverse rotation of 32 into the forward / backward movement of the cylinder rod 25.

Next, an example of an optical fiber connection operation using the optical fiber connection operation tool 22 will be described. First, when the rotating lever 33 is rotated in the direction A in FIG.
Moves in the advance direction, and the toes 28a, 28b, 28c of the wedge claws 27a, 27b, 27c enter the corresponding slits 15a, 15b, 15c of the optical fiber mechanical splicing device 19 (FIG. 7 (a)). When the rotating lever 33 is further rotated, the surfaces of the slits 15a, 15b, and 15c on the pressing member side climb over the tapered surfaces of the toes 28a, 28b, and 28c and ride on a flat surface. As a result of this riding, each of the holding members 3a, 2, 3b becomes a spring arm 17a, 17b, 17c.
And is opened with respect to the mechanical splice substrate 1.

In this state, the mechanical splice substrate 1
The bare optical fiber 10 of the optical fiber core 11 is smoothly inserted from the coating part fixing groove 6 side by inserting the optical fiber core 11 along the optical fiber guide groove 5 from both sides. And enters into each other at the center of the groove 7 (FIG. 7B).

In this state, when the press-fitting operation portion 31 is pushed in, the matching agent 29 in the cylinder rod 25 passes through the passage provided in the arm 27b from the nozzle 30 through the matching agent guiding groove 9 to be bare. The ink is discharged and supplied into the fiber positioning groove 7. Note that the supply of the matching agent 29 may be performed before the optical fiber core 11 is inserted. By supplying this matching agent, the matching portion of the bare optical fiber is filled with the matching agent, thereby improving the connection characteristics of the optical fiber.

After confirming the butting of the bare optical fiber through the observation region of the optical fiber mechanical splicing device, the rotating lever 33 is returned and rotated to the opposite side.
The cylinder rod 25 moves backward, and the wedge claws 27a, 27b,
27c escapes from each slit 15a, 15b, 15c, and each holding member 3a, 2, 3b is
The covering members 3a and 3b are closed by the pressing forces of a, 17b and 17c, the covering members 3a and 3b cover the covering portion of the optical fiber 11, and the bare fiber pressing member 2 is abutted bare optical fibers 10a and 17b.
Are held down and fixed on the mechanical splice substrate 1 to complete the operation of connecting the optical fibers.

In this embodiment, the opening / closing operation of each of the pressing members 3a, 2, 3b can be surely performed only by rotating the rotating lever 33.
3b can be very easily opened and closed, and the work of inserting the optical fiber core wire into the connection groove of the mechanical splice substrate 1 becomes easy, and the work of connecting the optical fiber using the optical fiber mechanical splicing device 19 is facilitated. Work efficiency can be greatly increased.

When a mechanical splice connection of an optical fiber is performed by using the optical fiber mechanical splicing device 19, a connecting agent of the optical fiber is first filled with a matching agent. There is a problem that the matching agent is insufficient and the connection loss of the optical fiber is increased. However, as in the above-described embodiment, when the optical fiber is connected, the press-fitting operation unit 31 is operated to fill the matching agent. Therefore, there is no shortage of the matching agent, and it is possible to always maintain the connection state of the optical fiber having excellent connection characteristics.

When the matching agent guiding groove 9 is not provided between the slit 15b and the bare fiber positioning groove 7,
In the state of FIG. 8A, the wedge claw 27b is inserted into the slit 15b, and as shown in FIG. 8B, the bare fiber pressing member 2 is opened to align the nozzle 30 with the bare fiber positioning groove 7. The supply of the agent is possible.

FIG. 9 shows a second embodiment of the work tool for connecting optical fibers. The work tool 22 for connecting an optical fiber according to this embodiment is configured such that an elliptical cam rotor 35 is connected to the tip end of a cam rotor rotation shaft 34, and the cam rotor rotation shaft 34
A rotation operation unit 36 for rotating the cam rotor rotation shaft is provided on the base end side of the camshaft.

The width d _s is the slit 15a, less than the width of the upper and lower openings of 15c, also, the large diameter portion (diameter portion) of the cam rotor 35 d _G of the small diameter portion of the cam rotor 35 (minor axis portion) is
Each of the slits 15a, 15b, 15c is formed to be larger than the upper and lower opening widths of the slits 15a, 15b, 15c and smaller than the left and right widths of the slits 15a, 15b, 15c.

When the optical fiber mechanical splicing of the optical fiber mechanical splicing device 19 is performed using the optical fiber connecting work tool 22, first, the small diameter portion of the cam rotor 35 is inserted into the corresponding slits 15a to 15c. In this state, the rotation operation unit 36 is operated to operate the cam rotor 35.
10, the holding member is opened with respect to the mechanical splice substrate 1 as shown in FIG. 10, and in this state, the optical fiber core is connected to the mechanical splice in the same manner as shown in FIG. It is inserted into the connection groove on the substrate 1 from both sides and butt, and then the cam rotor |
° Rotate to close the holding member and slit the cam rotor 35
What is necessary is just to extract from 15a-15c.

When using the work tool 22 for connecting an optical fiber according to the second embodiment, the cylinder rod 25 moves forward and backward like the work tool for connecting an optical fiber according to the first embodiment shown in FIG. Therefore, it is not necessary to secure a space for the work space, so that the work space can be saved. Further, as in the first embodiment, it is possible to simplify the connection work of the optical fiber core wires and to achieve a significant work efficiency.

In the working tool for connecting an optical fiber according to the second embodiment, the cam rotor rotating shaft 34 is formed by a cylinder shaft, a piston is inserted into the cylinder shaft, and a press-fitting operation for press-fitting the piston is performed. By providing the portion 31 as shown by the dashed line in FIG. 10, and by providing the nozzle 30 as shown by the dashed line in FIG.
As in the case of the optical fiber connection work tool of the first embodiment, it is possible to supply the matching agent into the bare fiber positioning groove 7 during the connection work of the optical fiber.

The optical fiber connection work tool of the present invention is not limited to the above-described embodiment, but can adopt various embodiments. For example, in the second embodiment of the working tool for optical fiber connection, the cam rotor 35 is formed into an elliptical shape.
The cam rotor may be a rotor having a small-diameter portion having a width smaller than the upper and lower opening widths of the slits 15a to 15c and a large-diameter portion larger than the upper and lower opening widths and smaller than the left and right widths. It does not matter.

[0052]

According to the optical fiber mechanical splicing apparatus of the present invention, a slit is provided at a joint portion between the mechanical splice substrate and the pressing member. Therefore, the pressing member is moved to the mechanical splice substrate by using the slit. The work for opening and closing is facilitated, the work tool for optical fiber connection is easy to use, and the work for optical fiber mechanical splice connection can be facilitated.

Also, in the optical fiber mechanical splicing device having a configuration in which the slit forming portion and the optical fiber connecting groove on the mechanical splice substrate are communicated by a matching agent guiding groove, an optical fiber connecting operation is performed. Using a tool, the matching agent can be reliably filled and supplied to the portion where the optical fiber is butt-connected to the connection groove of the optical fiber, and the operation of filling and supplying the matching agent can be facilitated.

The working tool for connecting an optical fiber according to the present invention holds down the mechanical splice substrate by advancing and retracting a wedge claw using a slit provided in the optical fiber mechanical splicing device or by rotating a cam rotor. The members can be easily opened and closed, and the optical fibers can be easily inserted into the connection grooves of the optical fibers of the mechanical splice substrate and abutted against each other, so that a reliable mechanical splice connection of the optical fibers can be achieved, The efficiency of the connection work can be greatly improved.

In a configuration in which a wedge claw of the working tool for connecting an optical fiber or a tip end of a cam rotor is provided and a piston device for supplying and supplying a matching agent is connected to the nozzle, a mechanical splice substrate is provided. By operating the piston device with the holding member open, the matching agent can be easily pressure-fed to the butt connection area of the optical fiber, and even if the mechanical splice connection of the optical fiber is repeatedly performed. In addition, it is possible to prevent the phenomenon that the connection characteristics are degraded due to the shortage of the matching agent, and the reliability is not reduced even if the mechanical splice connection of the optical fiber is frequently repeated. A high optical fiber connection can be ensured.

[Brief description of the drawings]

FIG. 1 is a perspective view of a first embodiment of an optical fiber mechanical splicing device.

FIG. 2 is an explanatory diagram of a configuration of a covering portion pressing member and a bare fiber pressing member that constitute the optical fiber mechanical splicing device of FIG.

FIG. 3 is a sectional view taken along line AA of FIG.

FIG. 4 is a structural explanatory view of a mechanical splice substrate constituting the optical fiber mechanical splice device of the embodiment.

FIG. 5 is an explanatory view of another embodiment of the optical fiber mechanical splicing device.

FIG. 6 is an explanatory view showing a first embodiment of an optical fiber connection working tool together with an optical fiber mechanical splice device.

FIG. 7 is an explanatory diagram of a use state of the working tool for connecting optical fibers according to the embodiment.

FIG. 8 is an explanatory view of another use state of the work tool for connecting an optical fiber.

FIG. 9 is an explanatory view of a second embodiment of the work tool for connecting optical fibers.

FIG. 10 is a use state diagram of the working tool for optical fiber connection of the embodiment.

FIG. 11 is an explanatory diagram of a general optical fiber cord that is mechanically spliced by using an optical fiber mechanical splice device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mechanical splice board 2 Bare fiber pressing member 3a, 3b Coating member pressing member 15a to 15c Slit 19 Optical fiber mechanical splicing device 22 Optical fiber connection work tool 25 Cylinder rod 27a, 27b, 27c Wedge claw 30 Nozzle 31 Press-in operation part 34 Cam rotor rotation shaft 35 Cam rotor

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takeyuki Nakano 2-6-1 Marunouchi, Chiyoda-ku, Tokyo Inside Furukawa Electric Co., Ltd. (72) Masato Shiino 2-6-1, Marunouchi, Chiyoda-ku, Tokyo No. Furukawa Electric Co., Ltd. (72) Inventor Shinji Nagasawa Nippon Telegraph and Telephone Co., Ltd.

Claims (4)

[Claims] 1. A holding member is put on a mechanical splice substrate on which a connection groove for an optical fiber is formed,
The pressing member and the mechanical splice substrate are sandwiched by a U-shaped spring clamp, and the pressing member can be opened and closed with respect to the mechanical splice substrate at the U-shaped opening end side of the spring clamp. An optical fiber mechanical splicing device, wherein a slit is provided at the joint portion between the holding member and the mechanical splice substrate, and the slit forming portion and the connection groove for the optical fiber are communicated by a matching agent guiding groove. 2. A pressing member is put on a mechanical splice substrate on which a connection groove for an optical fiber is formed,
The pressing member and the mechanical splice substrate are sandwiched by a U-shaped spring clamp, and the pressing member can be opened and closed with respect to the mechanical splice substrate at the U-shaped opening end side of the spring clamp. On the side, the holding member is opened using the slit of the optical fiber mechanical device in which a slit is provided at a joint portion between the holding member and the mechanical splice substrate, and the optical fiber is inserted into the connection groove on the mechanical splice substrate. An optical fiber connecting tool of an optical fiber mechanical splicing device for mechanically splicing the optical fiber by closing and holding the holding member for the optical fiber in the abutted state, the tip of which is the optical fiber mechanical splice. Upper and lower opening width of the slit of the device A wedge nail proximal end with a tapered face of the large thickness than the vertical opening width of the slit in the remote thin,
The wedge claw is advanced into the slit, the pressing member is opened to open the pressing member, the wedge claw is moved backward, and the pressing member is closed, and the wedge claw is moved forward and backward. A working tool for connecting an optical fiber of an optical fiber mechanical splicing device having the above. 3. A pressing member is put on a mechanical splice substrate on which a connection groove for an optical fiber is formed,
The pressing member and the mechanical splice substrate are sandwiched by a U-shaped spring clamp, and the pressing member can be opened and closed with respect to the mechanical splice substrate at the U-shaped opening end side of the spring clamp. On the side, the holding member is opened using the slit of the optical fiber mechanical device in which a slit is provided at a joint portion between the holding member and the mechanical splice substrate, and the optical fiber is inserted into the connection groove on the mechanical splice substrate. An optical fiber connecting tool of an optical fiber mechanical splicing device for mechanically splicing the optical fiber by closing and holding the holding member for the optical fiber in the abutted state, the tip of which is the optical fiber mechanical splice. Upper and lower opening width of the slit of the device A cam rotor having a smaller diameter portion with a smaller diameter than the upper and lower opening widths of the slit, and a large diameter portion smaller than the left and right widths of the slit; and rotating the cam rotor with the cam rotor inserted into the slit. A work tool for connecting an optical fiber of an optical fiber mechanical splice device, comprising: a cam rotor rotation shaft for opening and closing the holding member, and a rotation operation unit for rotating the cam rotor rotation shaft. 4. A wedge claw inserted into a slit of an optical fiber mechanical splicing device or a matching agent is discharged through a matching agent guiding groove into a connecting groove of the mechanical splicing device at a tip end side of the cam rotor. 3. The working tool for connecting an optical fiber of an optical fiber mechanical splicing device according to claim 1, wherein a nozzle is provided, and the nozzle is connected to a piston device for supplying a matching agent under pressure.