JP2011232742A - Mounting tool for optical fiber connector and optical fiber connection method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting tool for an optical fiber connector for stabilizing butting load of an optical fiber hardly depending on the skill of an operator.SOLUTION: The mounting tool 1 for an optical fiber connector includes a base member 18 and a slide member 19. The base member 18 comprises a base body section 20 and a stationary base section 21 disposed on the rear end side of the base body section 20. On the base body section 20, a core line positioning groove 22 for containing an optical fiber core line 4 of an optical cord 3, and a cord positioning groove 23 for containing an outer sheath 5 of the optical cord 3 are formed. Cord affixing grooves 26 and 27 for containing the outer sheath 5 of the optical cord 3 are formed on the stationary base section 21 so as to be parallel to each other. The slide member 19 is mounted to the base body section 20 so as to be slidable in the front-rear direction. The slide member 19 is mounted to one side of the base body section 20 and has a holder 32 holding an optical fiber connector 2.

Description

  The present invention relates to an assembly tool for an optical fiber connector used for connecting an optical fiber to a built-in fiber provided in the optical fiber connector, and an optical fiber connection performed using the assembly tool for an optical fiber connector. It is about the method.

  As a conventional optical fiber connection method, for example, as described in Patent Document 1, an optical fiber of an optical fiber cable is butt-connected to a built-in optical fiber inserted in a ferrule of an optical connector, and an optical fiber cable terminal is used. In a state where a drawn tensile body is sandwiched between the optical connector housing and a fixing cap, the fixing cap is fixed to the fixing portion of the housing with a screw.

JP 2009-109978 A

  In the case of connecting optical fibers as in the above-mentioned conventional technique, it is an important point to ensure connection quality that the optical fiber is connected so as to give an appropriate abutting load to the connection surface, In order to apply such an appropriate load, the optical fiber core wire or the optical cord is bent and the optical fibers are brought into contact with each other. However, it is difficult to appropriately control the bending load of the optical fiber manually, and it has been necessary to depend on the skill of the operator. In particular, since the optical cord is more rigid than the optical fiber core wire, the use of the optical cord largely depends on the skill of the operator.

  An object of the present invention is to provide an assembly tool for an optical fiber connector and an optical fiber connection method capable of stabilizing an abutment load of an optical fiber almost without depending on an operator's skill.

  The present invention is an assembly tool for an optical fiber connector for connecting an optical fiber to a built-in fiber provided in the optical fiber connector, and has a main body portion provided with a fiber positioning groove for accommodating the optical fiber. A base member, fiber fixing means for fixing the optical fiber accommodated in the fiber positioning groove, and a holder disposed on one side of the main body for holding the optical fiber connector; And a slide member attached to be slidable in the extending direction.

  When an optical fiber is connected to the built-in fiber provided in the optical fiber connector using the assembly tool for an optical fiber connector of the present invention, first, the optical fiber is accommodated in the fiber positioning groove of the main body. In this state, the optical fiber is fixed by the fiber fixing means. Moreover, an optical fiber connector is attached to the holder of the slide member. And the front-end | tip part of an optical fiber is cut in the state which brought the holder near the opposite side of the front-end | tip of an optical fiber with respect to a main-body part. Thereafter, the optical fiber is abutted against and connected to the built-in fiber of the optical fiber connector in a state where the holder is brought close to the distal end side of the optical fiber with respect to the main body. At this time, since the holder for holding the optical fiber connector is disposed on one side of the main body, when the tip of the optical fiber is inserted into the optical fiber connector, the optical fiber is moderately bent. It happens naturally. Thereby, the abutting load between the optical fiber and the built-in fiber can be stabilized without depending on the skill of the operator.

  Preferably, the base member further includes a fixed base disposed on one end side of the main body, and the fixed base includes a first fiber fixing groove that accommodates the optical fiber provided on the same straight line as the fiber positioning groove. The fiber fixing means includes a first pressing member that presses the optical fiber accommodated in the fiber positioning groove against the main body, and a second presser that presses the optical fiber accommodated in the first fiber fixing groove against the fixed base. Member.

  In this case, the optical fiber is first accommodated in the fiber positioning groove of the main body portion and the first fiber fixing groove of the fixed base portion, and the optical fiber is pressed against the main body portion by the first pressing member, and the light is pressed by the second pressing member. By pressing the fiber against the fixed base, the optical fiber can be sufficiently fixed. When the optical fiber is connected to the built-in fiber of the optical fiber connector, the optical fiber is fixed by the first pressing member and the optical fiber is continuously fixed by the second pressing member. It is possible to easily connect the optical fiber and the built-in fiber while reliably generating appropriate bending in the fiber.

  In this case, preferably, the optical fiber is built in the cord jacket of the optical cord, and a tensile strength fiber is interposed between the optical fiber and the cord jacket, and the portion corresponding to the holder in the fixed base portion. Is provided with a second fiber fixing groove for accommodating the optical fiber, and the second pressing member presses the optical fiber accommodated in the first fiber fixing groove or the second fiber fixing groove against the fixed base.

  In this case, the optical fiber accommodated in the first fiber fixing groove is moved and accommodated in the second fiber fixing groove provided in the portion corresponding to the holder, so that the optical fiber can be connected to the optical fiber connector. It extends almost straight. As a result, the cord jacket and the tensile fiber can be easily fixed to the optical fiber connector.

  The present invention also provides an assembly tool for an optical fiber connector for connecting an optical fiber to a built-in fiber provided in the optical fiber connector, wherein the first fiber positioning groove for receiving the optical fiber is provided. A base member having a main body; an attachment having a fiber guide provided detachably attached to the main body and provided with a second fiber positioning groove continuous with the first fiber positioning groove; and the first fiber positioning groove and the second fiber A fiber fixing means for fixing the optical fiber accommodated in the positioning groove; and a holder disposed on one side of the main body for holding the optical fiber connector, and the first fiber positioning groove extending from the main body. And a fiber fixing means provided on the attachment for positioning the second fiber. The first pressing member that presses the optical fiber accommodated in the fiber guide against the fiber guide is provided, and an attachment support portion for detachably supporting the attachment is provided at a portion corresponding to the holder in the base member. It is what.

  When an optical fiber is connected to a built-in fiber provided in the optical fiber connector using the assembly tool for an optical fiber connector of the present invention, first, the optical fiber is connected to the first body portion of the base member. The fiber positioning groove and the second fiber positioning groove of the fiber guide are accommodated, and the optical fiber is fixed by the fiber fixing means in that state. Moreover, an optical fiber connector is attached to the holder of the slide member. And the front-end | tip part of an optical fiber is cut in the state which brought the holder near the opposite side of the front-end | tip of an optical fiber with respect to a main-body part. Thereafter, the attachment holding the optical fiber is removed from the main body while the holder is brought closer to the tip of the optical fiber with respect to the main body, and the attachment is attached to the attachment support. Then, the optical fiber is brought into contact with the built-in fiber of the optical fiber connector by moving the slide member to the opposite side of the optical fiber tip with respect to the main body. At this time, since the attachment support portion is disposed at a portion corresponding to the holder in the base member, the central axis of the optical fiber and the central axis of the built-in fiber are substantially aligned. For this reason, the optical fiber and the built-in fiber can be easily brought into contact with each other only by moving the slide member to the side opposite to the tip of the optical fiber with respect to the main body. Thereby, the abutting load between the optical fiber and the built-in fiber can be stabilized without depending on the skill of the operator. Also, since there is no bending of the optical fiber when connecting the optical fiber and the built-in fiber, it prevents the butting load between the optical fiber and the built-in fiber from varying due to the temperature when assembling the optical fiber connector. Is done.

  Preferably, the base member further has a fixed base disposed on one end side of the main body, and the fixed base is provided with a fiber fixing groove for accommodating the optical fiber on the same straight line as the first fiber positioning groove. The fiber fixing means further includes a second pressing member that presses the optical fiber accommodated in the fiber fixing groove against the fixed base, and the attachment support portion is provided at a portion corresponding to the holder in the fixed base. .

  In this case, the optical fiber is first accommodated in the first fiber positioning groove of the main body, the second fiber positioning groove of the fiber guide, and the fiber fixing groove of the fixed base, and the optical fiber is guided to the fiber guide by the first pressing member. The optical fiber can be sufficiently fixed by pressing and pressing the optical fiber against the fixed base by the second pressing member.

  Preferably, the optical fiber is built in the cord jacket of the optical cord, a tensile strength fiber is interposed between the optical fiber and the cord jacket, and the fiber guide is cut into a bifurcated state. Two cord positioning grooves for receiving the cord jacket are provided so as to sandwich the second fiber positioning groove.

  In this case, there is no need to fold the cord jacket that has been cut into two, so that the second fiber positioning groove does not need to be enlarged more than necessary, and there is no need for a part to temporarily fix the folded cord jacket. It becomes.

  The holder is preferably provided with a temporary fixing portion for temporarily fixing the tensile strength fiber. In this case, by temporarily holding the tensile strength fiber in a state where the tensile strength fiber is sufficiently stretched by the temporary fixing portion, when the tensile strength fiber is subsequently fixed to the optical fiber connector, the tensile strength fiber is maintained in a slack-free state. be able to. This prevents the optical fiber from being disconnected when the optical cord is pulled.

  Preferably, the slide member is provided with a gauge for measuring the length of the tip of the optical fiber. In this case, it is possible to easily confirm whether or not the length of the tip of the optical fiber is within a predetermined tolerance range after cutting the tip of the optical fiber.

  The optical fiber connection method of the present invention includes a step of preparing the above-described assembly tool for an optical fiber connector, a step of mounting the optical fiber connector in a holder, and an optical fiber being accommodated in a fiber positioning groove, and in that state, A step of fixing the fiber, a step of cutting the tip of the optical fiber in a state where the slide member is positioned on the opposite side of the tip of the optical fiber with respect to the main body, and after cutting the tip of the optical fiber, And a step of moving the slide member toward the distal end side of the optical fiber with respect to the main body and connecting the optical fiber to the built-in fiber provided in the optical fiber connector in that state.

  In such an optical fiber connection method of the present invention, by using the above-mentioned assembly tool for an optical fiber connector, when inserting the tip of the optical fiber into the optical fiber connector as described above, The fiber will naturally bend appropriately. Thereby, the abutting load between the optical fiber and the built-in fiber can be stabilized without depending on the skill of the operator.

  In addition, the optical fiber connection method of the present invention includes a step of preparing the above-described assembly tool for an optical fiber connector, a step of mounting the optical fiber connector on a holder, an optical fiber as a first fiber positioning groove, and a second fiber. A step of accommodating in the positioning groove and fixing the optical fiber in that state, and a step of cutting the tip of the optical fiber in a state where the slide member is positioned on the opposite side of the tip of the optical fiber with respect to the main body, After cutting the tip of the optical fiber, the slide member is moved toward the tip of the optical fiber with respect to the main body, and the attachment holding the optical fiber in that state is removed from the main body, and the attachment holding the optical fiber Is attached to the attachment support part, and the optical fiber is moved by moving the slide member to the opposite side of the optical fiber tip with respect to the main body part in that state. It is characterized in that a step of connecting an optical fiber to the internal optical fiber provided in the connector.

  In such an optical fiber connecting method of the present invention, by using the above-described assembly tool for an optical fiber connector, the slide member is moved to the opposite side of the tip of the optical fiber with respect to the main body as described above. Only the optical fiber and the built-in fiber can be matched. Thereby, the abutting load between the optical fiber and the built-in fiber can be stabilized without depending on the skill of the operator. Also, since there is no bending of the optical fiber when connecting the optical fiber and the built-in fiber, it prevents the butting load between the optical fiber and the built-in fiber from varying due to the temperature when assembling the optical fiber connector. Is done.

  According to the present invention, the abutting load of the optical fiber can be stabilized and the connection quality of the optical fiber can be ensured almost without depending on the skill of the operator.

It is a perspective view which shows one Embodiment of the assembly tool for optical fiber connectors concerning this invention. It is a top view which shows the state by which the optical fiber connector was attached to the assembly tool for optical fiber connectors shown to Fig.1 (a). It is sectional drawing which shows the mechanical splice part in the optical fiber connector shown in FIG. It is sectional drawing which shows the open / close state of the mechanical splice part shown in FIG. It is a perspective view which shows the state which mounted | wore and fixed the optical cord to the assembly tool for optical fiber connectors shown in FIG. It is a perspective view which shows the state which inserted the optical fiber core wire in the optical fiber connector shown in FIG. It is a perspective view which shows the state which extended the optical cord shown in FIG. 6 straight with respect to the optical fiber connector. It is a perspective view which shows the state which temporarily fixed the tensile strength fiber of the optical cord to the holder shown in FIG. It is a perspective view which shows other embodiment of the assembly tool for optical fiber connectors concerning this invention. It is an expansion perspective view of the part containing the attachment shown in FIG. It is a perspective view which shows the state by which the optical cord was hold | maintained at the attachment shown in FIG. It is a perspective view which shows a mode that an optical cord is mounted | worn with the assembly tool for optical fiber connectors shown in FIG. FIG. 10 is a perspective view showing a state in which an optical cord is attached and fixed to the assembly tool for an optical fiber connector shown in FIG. 9. It is a perspective view which shows the state by which the optical fiber connector was mounted | worn with the holder shown in FIG. It is a perspective view which shows the state in which the attachment was attached to the attachment support part shown in FIG. It is a perspective view which shows the state which stood | rightened the assembly tool for optical fiber connector shown in FIG. 15 upright. It is a perspective view which shows the state which removed the attachment from the attachment support part shown in FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of an assembly tool for an optical fiber connector and an optical fiber connection method according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view showing an embodiment of an assembly tool for an optical fiber connector according to the present invention, and FIG. 2 shows an optical fiber connector as an assembly tool for an optical fiber connector shown in FIG. It is a top view which shows the state in which was attached. In each figure, the assembly tool 1 for optical fiber connector of this embodiment is a tool for assembling the optical cord 3 (refer FIG. 3 etc.) to the optical fiber connector 2. FIG.

  As shown in FIG. 3, the optical cord 3 is interposed between an optical fiber core wire 4, a cord jacket 5 covering the optical fiber core wire 4, and the optical fiber core wire 4 and the cord jacket 5. And an ultrafine-diameter tensile strength fiber 6 (see FIG. 5 and the like). The tensile strength fibers 6 are built in the cord jacket 5 in a state of being gathered in a bundle. In addition, the wire diameter of the optical cord 3 is 1.6 mm-3.0 mm, for example, and the wire diameter of the optical fiber core wire 4 is 0.9 mm, for example.

  The optical fiber connector 2 is a mechanical splice type optical connector. The optical fiber connector 2 includes a mechanical splice portion 7 (see FIGS. 3 and 4) that mechanically connects the optical fibers, a housing 8 that accommodates the mechanical splice portion 7, and a knob 9 that covers the housing 8. It has.

  As shown in FIGS. 3 and 4, the mechanical splice unit 7 includes a base plate 10 having a V-shaped groove 10 a for accommodating the optical fiber core wire 4, and the optical fiber core wire 4 accommodated in the V-shaped groove 10 a. And a U-shaped clamp spring 12 that sandwiches the base plate 10 and the pressing plate 11.

  A ferrule 14 holding a short built-in fiber 13 is integrally fixed to the front end portion of the base plate 10. The front end face of the ferrule 14 is polished. The built-in fiber 13 extends from the front end face of the ferrule 14 to the V-shaped groove 10 a of the mechanical splice part 7.

  A plurality of wedge insertion recesses 16 into which the wedge portions 15a of the wedge members 15 (see FIG. 5) are inserted are formed in the boundary portion between the base plate 10 and the pressing plate 11 in the mechanical splice portion 7. The base plate 10 and the pressing plate 11 are sandwiched by the clamp spring 12 from the opposite side of the wedge insertion recess 16. The housing 8 and the knob 9 are formed with a plurality of through long holes 17 (see FIG. 8) for exposing the wedge insertion recesses 16.

  In such a mechanical splice portion 7, when the optical fiber core 4 of the optical cord 3 is connected to the built-in fiber 13 held by the ferrule 14, the wedge portion 15a is mechanically spliced as shown in FIG. It is inserted into the wedge insertion recess 16 of the part 7. Then, the base plate 10 and the holding plate 11 are opened against the urging force of the clamp spring 12.

  As shown in FIG. 3, the optical fiber core wire 4 is introduced into the mechanical splice portion 7 from the rear side of the mechanical splice portion 7, and the tip surface of the optical fiber core wire 4 is butted against one end surface of the built-in fiber 13. The In this state, as shown in FIG. 4 (c), the wedge portion 15 a is removed from the wedge insertion recess 16. Then, the base plate 10 and the holding plate 11 are closed by the urging force of the clamp spring 12, and are fixed to the mechanical splice portion 7 in a state where the optical fiber core wire 4 and the built-in fiber 13 are connected.

  Returning to FIGS. 1 and 2, the assembly tool 1 for an optical fiber connector includes a base member 18 and a slide member 19 slidably attached to the base member 18.

  The base member 18 includes a base body 20 and a fixed base 21 disposed on the rear end side of the base body 20. The base main body 20 extends in the front-rear direction of the base member 18, and the fixed base 21 extends in a direction perpendicular to the longitudinal direction of the base main body 20 (the left-right direction of the base member 18).

  At the front end side portion of the base main body portion 20, a core wire positioning groove 22 for accommodating the optical fiber core wire 4 exposed by removing the cord jacket 5 at the tip portion of the optical cord 3 is provided in the front-rear direction of the base main body portion 20. It is formed to extend. A cord positioning groove 23 for receiving the cord jacket 5 of the optical cord 3 is formed on the rear side of the core wire groove 22 in the base body 20 so as to extend continuously in the same direction as the core wire positioning groove 22. . The front portion of the cord positioning groove 23 has such a dimension that the temporary fixing member 37 (see FIG. 5) can be accommodated. On the rear side of the cord positioning groove 23 in the base main body portion 20, a notch portion 24 that forms a space for allowing the cord jacket 5 to escape to the left and right sides is provided.

  A front pressing member 25 that presses the optical fiber core wire 4 accommodated in the core wire positioning groove 22 against the base main body portion 20 can be rotated (opened / closed) via the shaft portion at the front end portion of the base main body portion 20. Is attached. In a state where the front pressing member 25 is closed with respect to the base main body portion 20, the front pressing member 25 is locked to the base main body portion 20 by a locking means (not shown), and thus the optical fiber core wire. 4 comes to be fixed.

  The fixing base 21 is formed with cord fixing grooves 26 and 27 for receiving the cord jacket 5 of the optical cord 3 in parallel. The cord fixing groove 26 is formed so as to extend on the same straight line as the cord positioning groove 23. The cord fixing groove 27 is formed in the vicinity of the side surface of the fixing base portion 21 on the cutout portion 24 side.

  A rear pressing member 28 is attached to the fixed base portion 21 via a shaft portion 29 so as to be rotatable (openable / closable). The shaft portion 29 is provided on the opposite side of the cord fixing groove 27 with respect to the cord fixing groove 26. The rear pressing member 28 includes a pressing portion 30 that presses the optical cord 3 accommodated in the cord fixing grooves 26 and 27 against the fixed base 21, and a lever portion 31 that opens and closes the pressing portion 30 with respect to the fixed base 21. And have. Between the fixed base portion 21 and the lever portion 31, a spring (not shown) that biases the pressing portion 30 toward the fixed base portion 21 is provided. Thereby, the optical cord 3 accommodated in the cord fixing grooves 26 and 27 is fixed.

  The slide member 19 is attached to the base body 20 so as to be slidable in the front-rear direction. The slide member 19 has a holder 32 that is disposed on the side of the notch 24 of the base body 20 and holds the optical fiber connector 2.

  The holder 32 has a pair of front side walls 33 and a pair of rear side walls 34 protruding sideways, and is configured to sandwich and hold the optical fiber connector 2 by the front side walls 33 and the rear side walls 34. ing. Each rear side wall 34 is formed with a temporary fixing groove portion 35 for temporarily fixing the tensile strength fiber 6 of the optical cord 3 to the holder 32.

  On the back side of the holder 32 in the slide member 19, a linear gauge 36 for measuring the fiber length of the tip portion of the optical fiber core wire 4 is provided. The gauge 36 appears when the slide member 19 is positioned in the foremost part with respect to the base body 20. The gauge 36 is not limited to the shape display, and may be a scale display or the like.

  When the optical fiber connector 2 is held by the holder 32, the length dimension L from the fixed base 21 to the optical fiber connector 2 is, for example, 90 mm, and the longitudinal center line of the base body 20 and the light A length dimension W between the fiber connector 2 and the center line in the same direction is, for example, 30 mm.

  When the optical cord 3 is assembled to the optical fiber connector 2 using the optical fiber connector assembly tool 1 configured as described above, the rear end of the optical fiber connector 2 is first a base as shown in FIG. The optical fiber connector 2 is attached to the holder 32 so as to face the fixed base 21 side of the member 18.

  Subsequently, as shown in FIG. 5, the cord jacket 5 at the distal end portion of the optical cord 3 is removed to expose the optical fiber core wire 4 and the tensile strength fiber 6. Then, the tip portion of the cord jacket 5 is torn into a bifurcated state, the cord jacket 5 is folded back together with the tensile strength fiber 6, and the cord jacket 5 and the tensile strength fiber 6 are temporarily fixed by the temporary fixing member 37 in this state. Then, the core coating at the tip of the optical fiber core 4 is removed to expose the bare fiber 4a.

  Subsequently, the optical fiber core wire 4 is disposed in the core wire positioning groove 22 of the base main body portion 20 so that the bare fiber 4 a protrudes from the front end surface of the base member 18, and the cord jacket 5 is attached to the base main body portion 20. The cord positioning groove 23 and the cord fixing groove 26 of the fixing base 21 are arranged. In this state, the front pressing member 25 is closed to fix the optical fiber core wire 4 to the base body 20, and the rear pressing member 28 is closed to fix the cord jacket 5 to the fixed base 21.

  Further, the wedge member 15 is attached to the optical fiber connector 2 held by the holder 32. As a result, as shown in FIG. 4B, the wedge portion 15a of the wedge member 15 is inserted into the wedge insertion recess 16 of the mechanical splice portion 7, so that the base plate 10 and the pressing plate 11 of the mechanical splice portion 7 are opened. It becomes a state. Then, the holder 32 is retracted from the vicinity of the front end portion of the base body 20 by moving the slide member 19 rearward (on the fixed base 21 side).

  Subsequently, in this state, the assembly tool 1 for an optical fiber connector is set in a fiber cutter (not shown), and the end portion of the bare fiber 4a is cut as a terminal treatment of the optical fiber core wire 4.

  Subsequently, as shown in FIG. 6, the holder 32 is moved by moving the slide member 19 forward with respect to the base body 20 so that the gauge 36 of the slide member 19 appears on the front end side of the base body 20. Is positioned near the front end of the base body 20. Then, it is confirmed whether or not the bare fiber 4a is cut to an appropriate length depending on whether or not the tip of the bare fiber 4a is within the length tolerance range of the gauge 36. If the end of the bare fiber 4a is not within the length tolerance range of the gauge 36, the bare fiber 4a is cut again.

  Subsequently, the front pressing member 25 is opened, the optical cord 3 is taken out from the core wire positioning groove 22 and the cord positioning groove 23, and the optical cord 3 is bent at the position of the notch portion 24 to the optical fiber connector 2. Assemble.

  Specifically, the optical fiber core wire 4 at the tip of the optical cord 3 is inserted into the optical fiber connector 2 and the optical fiber core is inserted into the built-in fiber 13 (see FIG. 3) provided in the optical fiber connector 2. Line 4 is butted and connected. Then, by removing the wedge member 15 from the optical fiber connector 2, the wedge portion 15a is removed from the wedge insertion recess 16 of the mechanical splice portion 7 as shown in FIG. The base plate 10 and the holding plate 11 are closed, and the optical fiber core wire 4 and the built-in fiber 13 are connected and fixed to the mechanical splice unit 7.

  At this time, since the holder 32 holding the optical fiber connector 2 is in a position adjacent to the front end of the base body 20, the optical fiber core wire 4 can be easily inserted into the optical fiber connector 2.

  Further, if the optical fiber core wire 4 is put into the optical fiber connector 2 in a state where the holder 32 is positioned rearward with respect to the base main body portion 20, excessive bending occurs in the optical cord 3, and the optical fiber The abutting load (deflection load) between the core 4 and the built-in fiber 13 is not stable, and the two are not properly connected. In the present embodiment, since the holder 32 is positioned forward with respect to the base main body 20, the optical cord 3 is moderately bent, and the abutting load between the optical fiber core wire 4 and the built-in fiber 13 is increased. In order to stabilize, both can be connected appropriately.

  Subsequently, as shown in FIG. 7, the rear pressing member 28 is opened, the optical cord 3 is transferred from the cord fixing groove 26 to the cord fixing groove 27, and the rear pressing member 28 is closed in this state. As a result, the optical cord 3 is fixed in a state of extending straight with respect to the optical fiber connector 2.

  Subsequently, the temporary fixing member 37 temporarily fixing the cord jacket 5 and the tensile strength fiber 6 is shifted to the fixed base 21 side, and the cord jacket 5 and the tensile strength fiber 6 are cut by a necessary length. Then, as shown in FIG. 8, the tensile strength fibers 6 are passed through temporary fixing groove portions 35 formed on the respective rear side walls 34 of the holder 32, and are temporarily fixed in a state of being hooked on the respective rear side walls 34 and tensioned. At this time, since the optical cord 3 extends straight with respect to the optical fiber connector 2, it becomes easy to temporarily fix the tensile strength fiber 6.

  When securing the tensile strength fiber 6 to the optical fiber connector 2, the tensile strength fiber 6 is loosened so that the tensile strength fiber 6 is shorter than the optical fiber core wire 4 in order to ensure the tension as the optical fiber with connector. It is necessary to fix to the optical fiber connector 2 while maintaining the state of being pulled. Therefore, it is effective to temporarily fix the tensile strength fiber 6 in a tensioned state so as not to bend.

  In addition, as a method of temporarily fixing the tensile strength fiber 6 to the holder 32, for example, a rod is provided on the holder 32 in addition to passing the tensile strength fiber 6 through the temporary fixing groove portion 35 and hooking on the rear side wall 34. May be wrapped around.

  Subsequently, the tensile member 6 and the cord jacket 5 are sandwiched by the fixing member via the temporary fixing member 37 by screwing a fixing member (not shown) into the screw portion 8 a provided at the rear portion of the housing 8. As a result, the tensile strength fiber 6 and the cord jacket 5 are fixed to the optical fiber connector 2. Thereafter, the rear pressing member 28 is opened, the optical cord 3 is taken out from the cord fixing groove 27, and the optical fiber connector 2 with the optical cord 3 assembled is removed from the holder 32.

  As described above, in the present embodiment, after the optical fiber terminal processing of the optical cord 3 is performed, the holder 32 holding the optical fiber connector 2 is moved forward with respect to the base body 20 of the base member 18. In this state, since the optical fiber core wire 4 is abutted and connected to the built-in fiber 13 of the optical fiber connector 2, the optical cord 3 is moderately bent without depending on the skill of the operator. Thus, the abutting load of the optical fiber core wire 4 against the built-in fiber 13 can be stabilized. Thereby, the connection quality between the optical fiber core wire 4 and the built-in fiber 13 can be ensured.

  In addition, since the optical fiber core 4 is fixed to the optical fiber connector 2 and the tensile strength fiber 6 is hooked on the rear side wall 34 of the holder 32 and temporarily fixed, the tensile strength fiber 6 is then connected to the optical fiber without bending. It can be fixed to the vessel 2. Accordingly, the work of fixing the tensile strength fiber 6 and the cord jacket 5 to the optical fiber connector 2 is less dependent on the skill of the operator.

  FIG. 9 is a perspective view showing another embodiment of the assembly tool for an optical fiber connector according to the present invention. In the figure, the same or equivalent elements as those in the embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.

  In the same figure, the assembly tool 40 for optical fiber connector of this embodiment is equipped with the base member 41 and said slide member 19 attached to this base member 41 so that a slide was possible.

  The base member 41 includes a base body portion 42 and a fixed base portion 43 disposed on the rear end side of the base body portion 42. The base main body 42 extends in the front-rear direction of the base member 41, and the fixed base 43 extends in a direction perpendicular to the longitudinal direction of the base main body 42 (the left-right direction of the base member 41).

  At the front end portion of the base main body portion 42, a core wire positioning groove 44 for accommodating the optical fiber core wire 4 exposed by removing the code jacket 5 at the tip portion of the optical cord 3, and a tip portion of the optical cord 3. Two cord positioning grooves 45 that accommodate the cord jacket 5 that is torn into two branches are formed so as to extend in the front-rear direction of the base main body portion 42. Each cord positioning groove 45 is disposed so as to sandwich the core wire positioning groove 44. Further, a front pressing member 46 that presses the optical fiber core wire 4 accommodated in the core wire positioning groove 44 against the base main body portion 42 is rotated (opened / closed) via the shaft portion at the front end portion of the base main body portion 42. ) Can be attached.

  A cord positioning groove 47 that accommodates the cord jacket 5 of the optical cord 3 is formed on the rear side of the core wire positioning groove 44 in the base main body portion 42 so as to extend on the same straight line as the core wire positioning groove 44.

  An attachment 48 for holding the optical cord 3 is detachably mounted in a region between the core wire positioning groove 44 and the cord positioning groove 47 in the base main body portion 42. As shown in FIGS. 10 and 11, the attachment 48 includes a fiber guide 49 and a pressing member 50 attached to the fiber guide 49 so as to be rotatable (openable / closable) via a shaft portion.

  The fiber guide 49 is formed so as to branch from the cord positioning groove 51A and the two cord positioning grooves 51B continuous to the respective cord positioning grooves 45. The cord positioning groove 52 is formed between the cord positioning grooves 51B and is continuous with the core wire positioning groove 44 described above. The pressing member 50 is a member that collectively presses the cord jacket 5 accommodated in the cord positioning grooves 51 </ b> A and 51 </ b> B and the optical fiber core wire 4 accommodated in the core wire positioning groove 52 against the fiber guide 49.

  The fixed base 43 is formed with a cord fixing groove 53 that accommodates the cord jacket 5 of the optical cord 3. The cord fixing groove 53 is formed so as to extend on the same straight line as the cord positioning groove 47.

  An attachment support portion 54 that detachably supports the attachment 48 is provided at an end portion of the fixed base portion 43 corresponding to the holder 32. The attachment support portion 54 is formed with a groove 54a (see FIG. 15) having a rectangular cross section for pressing and fixing the rear portion of the attachment 48 and guiding the optical cord 3. At this time, in a state where the optical fiber connector 2 is held by the holder 32 and the attachment 48 holding the optical cord 3 is supported by the attachment support portion 54 (see FIG. 15), the built-in fiber of the optical fiber connector 2 The center axis of 13 and the center axis of the optical fiber 4 of the optical cord 3 are configured to substantially coincide with each other.

  The rear pressing member 28 is attached to the fixed base portion 43 through a shaft portion 29 so as to be rotatable (openable / closable).

  When the optical cord 3 is assembled to the optical fiber connector 2 using the optical fiber connector assembling tool 40 configured as described above, first, as shown in FIG. 5 is removed to expose the optical fiber core wire 4 and the tensile strength fiber 6 (not shown), and the tip portion of the cord jacket 5 is torn into a bifurcated state. Then, the core coating at the tip of the optical fiber core 4 is removed to expose the bare fiber 4a.

  Subsequently, the optical fiber core wire 4 is disposed in the core wire positioning grooves 44 and 52 so that the bare fiber 4a protrudes from the front end surface of the base member 41 with the front pressing member 46 and the pressing member 50 opened. . Further, the cord jacket 5 is disposed in the cord positioning grooves 47, 51 </ b> A, 51 </ b> B and the cord fixing groove 53.

  Then, in this state, as shown in FIG. 13A, the front pressing member 46 is closed to fix the optical fiber core wire 4 to the base main body 42, and the pressing member 50 and the rear pressing member 28 are closed. The jacket 5 is fixed to the fiber guide 49 and the fixed base 43.

  Subsequently, by moving the slide member 19 rearward (on the fixed base portion 43 side), the assembly tool 40 for the optical fiber connector is removed from the vicinity of the front end portion of the base main body portion 42 in the state where the holder 32 is retracted. (Not shown), and the tip of the bare fiber 4a is cut.

  Subsequently, as shown in FIG. 13B, the holder 32 is positioned in the vicinity of the front end portion of the base main body portion 42 by moving the slide member 19 forward with respect to the base main body portion 42. Then, as shown in FIG. 14A, the optical fiber connector 2 is attached to the holder 32 so that the rear end of the optical fiber connector 2 faces the fixed base 43 side. Further, the wedge member 15 is attached to the optical fiber connector 2 held by the holder 32.

  Subsequently, as shown in FIG. 14B, the front pressing member 46 and the rear pressing member 28 are opened, and the attachment 48 holding the cord jacket 5 is removed from the base main body 42. Then, as shown in FIG. 15A, the attachment 48 holding the optical cord 3 is attached to the attachment support portion 54 so that the tip of the optical cord 3 faces the holder 32 side. Then, as shown in FIG. 15B, the slide member 19 is moved backward until the built-in fiber 13 of the optical fiber connector 2 held by the holder 32 hits the optical fiber core wire 4.

  Subsequently, as shown in FIG. 16, the assembly tool 40 for the optical fiber connector is set up in the vertical direction so that the fixed base 43 is on the lower side, and the built-in fiber 13 and the optical fiber core wire 4 collide with each other. After confirming the above, the wedge member 15 is removed from the optical fiber connector 2. At this time, since the assembly tool 40 for the optical fiber connector is erected, the abutting load between the optical fiber 4 and the built-in fiber 13 becomes the own weight of the slide member 19 including the optical fiber connector 2. For this reason, the abutting load between the optical fiber 4 and the built-in fiber 13 does not depend on the size or material of the optical cord 3.

  Subsequently, the pressing member 50 of the attachment 48 is opened, and the optical cord 3 is taken out from the attachment 48 by removing the attachment 48 from the attachment support portion 54 as shown in FIG. Then, similarly to the above-described embodiment, the cord jacket 5 and the tensile strength fiber 6 are fixed to the optical fiber connector 2. Thereafter, the optical fiber connector 2 assembled with the optical cord 3 is removed from the holder 32.

  As described above, in the present embodiment, the attachment 48 that holds the optical cord 3 is detachably attached to the base main body 42 of the base member 41, and the side corresponding to the holder 32 in the fixed base 43 of the base member 41. An attachment support portion 54 for detachably supporting the attachment 48 is provided at the end of the attachment. For this reason, after attaching the attachment 48 holding the optical cord 3 to the attachment support portion 54, the built-in fiber 13 of the optical fiber connector 2 held by the holder 32 can be optically coded simply by moving the slide member 19 backward. 3 optical fiber core wires 4 can be connected to each other. Thereby, the butting load of the optical fiber core wire 4 with respect to the built-in fiber 13 can be stabilized almost without depending on the skill of the operator.

  In addition, the rigidity of the optical cord 3 varies greatly depending on the size, material, and assembly temperature of the optical cord 3, but the optical cord 3 is not bent when the optical fiber core 4 and the built-in fiber 13 are brought into contact with each other. Since the optical cord 3 is fixed to the attachment support portion 54 via the attachment 48, the variation in the abutting load between the optical fiber core 4 and the built-in fiber 13 increases due to the rigidity of the optical cord 3. Is prevented. Thereby, the butting load of the optical fiber core wire 4 with respect to the built-in fiber 13 can be further stabilized. As a result, it is possible to ensure sufficient connection quality between the optical fiber core wire 4 and the built-in fiber 13.

  The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the optical cord 3 in which the optical fiber core wire 4 is incorporated in the cord coating 5 is assembled to the optical fiber connector 2, but the present invention is an optical fiber core not incorporated in the cord coating. The present invention can also be applied to those in which a wire is assembled to the optical fiber connector 2.

DESCRIPTION OF SYMBOLS 1 ... Assembly tool for optical fiber connectors, 2 ... Optical fiber connector, 3 ... Optical cord, 4 ... Optical fiber core wire, 5 ... Cord jacket, 6 ... Tensile fiber, 13 ... Built-in fiber, 18 ... Base member, DESCRIPTION OF SYMBOLS 19 ... Slide member, 20 ... Base main-body part, 21 ... Fixed base, 22 ... Core wire positioning groove (fiber positioning groove), 23 ... Code positioning groove (fiber positioning groove), 25 ... Front pressing member (1st pressing member) , Fiber fixing means), 26 ... cord fixing groove (first fiber fixing groove), 27 ... cord fixing groove (second fiber fixing groove), 28 ... rear pressing member (second pressing member, fiber fixing means), 32 ... Holder, 35 ... Temporary fixing groove (temporary fixing portion), 36 ... Gauge, 40 ... Assembly tool for optical fiber connector, 41 ... Base member, 42 ... Base body, 43 ... Fixed base, 44 ... Core wire positioning Groove (first fiber positioning groove), 47 ... cord positioning groove (first fiber positioning groove), 48 ... attachment, 49 ... fiber guide, 50 ... pressing member (first pressing member, fiber fixing means), 51A ... code positioning Groove (second fiber positioning groove), 51B ... cord positioning groove, 52 ... core wire positioning groove (second fiber positioning groove), 53 ... cord fixing groove, 54 ... attachment support.

Claims (10)

An assembly tool for an optical fiber connector for connecting an optical fiber to a built-in fiber provided in the optical fiber connector,
A base member having a main body provided with a fiber positioning groove for accommodating the optical fiber;
Fiber fixing means for fixing the optical fiber housed in the fiber positioning groove;
A slide member which is disposed on one side of the main body and has a holder for holding the optical fiber connector, and is slidably attached to the main body in the extending direction of the fiber positioning groove. An assembly tool for an optical fiber connector. The base member further includes a fixed base disposed on one end side of the main body,
The fixed base is provided with a first fiber fixing groove that accommodates the optical fiber on the same straight line as the fiber positioning groove;
The fiber fixing means includes a first pressing member that presses the optical fiber accommodated in the fiber positioning groove against the main body, and the optical fiber accommodated in the first fiber fixing groove with respect to the fixed base. The assembly tool for an optical fiber connector according to claim 1, further comprising a second pressing member that presses and holds. The optical fiber is built in the code jacket of the optical cord,
A tensile strength fiber is interposed between the optical fiber and the cord jacket,
A portion corresponding to the holder in the fixed base is provided with a second fiber fixing groove for accommodating the optical fiber,
3. The optical fiber connector assembly according to claim 2, wherein the second pressing member presses the optical fiber accommodated in the first fiber fixing groove or the second fiber fixing groove against the fixed base. Attached tool. An assembly tool for an optical fiber connector for connecting an optical fiber to a built-in fiber provided in the optical fiber connector,
A base member having a main body provided with a first fiber positioning groove for accommodating the optical fiber;
An attachment having a fiber guide that is detachably attached to the main body and is provided with a second fiber positioning groove continuous with the first fiber positioning groove;
Fiber fixing means for fixing the optical fiber housed in the first fiber positioning groove and the second fiber positioning groove;
A slide member that is disposed on one side of the main body and has a holder for holding the optical fiber connector, and is slidably attached to the main body in the extending direction of the first fiber positioning groove; Prepared,
The fiber fixing means includes a first pressing member that is provided on the attachment and presses the optical fiber accommodated in the second fiber positioning groove against the fiber guide,
An assembly tool for an optical fiber connector, wherein an attachment support portion for detachably supporting the attachment is provided at a portion of the base member corresponding to the holder. The base member further includes a fixed base disposed on one end side of the main body,
The fixed base is provided with a fiber fixing groove for accommodating the optical fiber on the same straight line as the first fiber positioning groove,
The fiber fixing means further includes a second pressing member that presses the optical fiber accommodated in the fiber fixing groove against the fixing base,
The said attachment support part is provided in the site | part corresponding to the said holder in the said fixed base, The assembly tool for optical fiber connectors of Claim 4 characterized by the above-mentioned. The optical fiber is built in the code jacket of the optical cord,
A tensile strength fiber is interposed between the optical fiber and the cord jacket,
The said fiber guide is provided with the two code | cord | chord positioning grooves which accommodate the said code | cord jacket cut | disconnected by the bifurcated state so that the said 2nd fiber positioning groove may be pinched | interposed. Assembly tool for optical fiber connectors.   The assembly tool for an optical fiber connector according to claim 3 or 6, wherein the holder is provided with a temporary fixing portion for temporarily fixing the tensile strength fiber.   The assembly tool for an optical fiber connector according to any one of claims 1 to 7, wherein the slide member is provided with a gauge for measuring a length of a tip portion of the optical fiber. . Preparing an assembly tool for an optical fiber connector according to any one of claims 1 to 3,
Attaching the optical fiber connector to the holder;
Storing the optical fiber in the fiber positioning groove, and fixing the optical fiber in that state;
Cutting the tip of the optical fiber in a state where the slide member is positioned on the opposite side of the tip of the optical fiber with respect to the main body;
After cutting the distal end portion of the optical fiber, the slide member is moved toward the distal end side of the optical fiber with respect to the main body portion, and the light is applied to the built-in fiber provided in the optical fiber connector in that state. And a step of connecting the fibers. Preparing an assembly tool for an optical fiber connector according to any one of claims 4 to 6;
Attaching the optical fiber connector to the holder;
Storing the optical fiber in the first fiber positioning groove and the second fiber positioning groove, and fixing the optical fiber in that state;
Cutting the tip of the optical fiber in a state where the slide member is positioned on the opposite side of the tip of the optical fiber with respect to the main body;
After cutting the distal end portion of the optical fiber, the step of moving the slide member toward the distal end side of the optical fiber with respect to the main body portion, and removing the attachment holding the optical fiber in that state from the main body portion; ,
The attachment holding the optical fiber is attached to the attachment support portion, and in that state, the slide member is moved to the opposite side of the tip of the optical fiber with respect to the main body portion, so that the optical fiber connector is inserted. And a step of connecting the optical fiber to the provided built-in fiber.

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