JP2011059701A - Mounting tool for optical connector and optical connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To form a bend having a desired dimension on an optical fiber when the end part of the optical fiber is fixed to an optical connector. <P>SOLUTION: The optical connector 60 includes: a ferrule 70 having a built-in optical fiber 74; a fiber fixing part 72 which is provided as a unit with the ferrule 70, wherein the built-in optical fiber 74 is inserted in a groove 82 formed inside, and the projected part of a coated optical fiber 122 projected from the end part of the outer coat part of an optical fiber cable 120 is made to abut on the built-in optical fiber 74 and is fixed in the groove 82; a cable fixing member 64 which is composed separately from the ferrule 70 and the fiber fixing part 72 and fixed on the outer coat part of the optical fiber cable 120; a housing part 68 for fixing and supporting the cable fixing member 64 on the fiber fixing part 72; and a projected part 92, projected from a part between the fiber fixing part 72 and the cable fixing member 64, for forming a bend on the projected part of the coated optical fiber 122 toward a specific direction. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an optical connector mounting aid and an optical connector.

  Patent Document 1 discloses a tool for attaching an optical connector. In this optical connector mounting tool, the optical connector is attached to the insertion auxiliary tool, and the optical fiber is inserted into the optical connector by sliding the attachment tool with respect to the insertion auxiliary tool with the optical fiber attached to the attachment tool. The optical fiber and a built-in optical fiber provided inside the optical connector are butt-connected.

  On the other hand, Patent Document 2 discloses an optical connector. The optical connector includes a frame, a connecting part having an internal optical fiber provided inside the frame, a gripping member that grips the optical fiber cable, a gripping member storage that supports the gripping member with respect to the frame, and a gripping It has a lid that opens and closes the member storage. In this optical connector, the gripping member is housed in the gripping member housing portion with the lid open, and the tip portion of the optical fiber core wire protruding from the gripping member is inserted into the connecting component. The line and a built-in optical fiber provided inside the connection component are butt-connected.

JP 2007-121863 A JP 2009-139981 A

  However, in the optical connector mounting tool described in Patent Document 1, a deflection is formed in a part of the optical fiber so that the optical fiber and the built-in optical fiber are abutted with a predetermined abutting force. However, when this deflection is formed toward the lower side rather than the upper side, the deflection may interfere with a part of the tool, and a deflection having a desired size may not be formed. In this case, the abutting force between the optical fiber and the built-in optical fiber becomes excessive, and the optical fiber or the built-in optical fiber may be chipped.

  Similarly, in the optical connector described in Patent Document 2, when the deflection is formed toward the lower side instead of the upper side, the deflection is extended from the surrounding connector structure (for example, from the gripping member, and the optical fiber core). In some cases, it is not possible to form a deflection having a desired size by interfering with an extended support portion that supports the line from below. In this case, the abutting force between the optical fiber core wire and the built-in optical fiber becomes excessive, and the optical fiber core wire or the built-in optical fiber may be chipped.

  The present invention has been made in view of the above problems, and an object thereof is to provide an optical connector mounting aid and an optical connector that can form a desired size of deflection.

  In order to solve the above-mentioned problem, the optical connector according to claim 1 is provided integrally with the ferrule having a built-in optical fiber and the ferrule, and the built-in optical fiber is inserted into a groove formed inside, A fiber fixing portion for fixing a protruding portion of an optical fiber core wire protruding from an end portion of an outer sheath portion of an optical fiber cable in a state of abutting with the built-in optical fiber in the groove, the ferrule, and the fiber fixing portion And a cable fixing part fixed to the outer skin part of the optical fiber cable, a fixing support part for fixing and supporting the cable fixing part with respect to the fiber fixing part, and the fiber fixing part, And a convex portion that protrudes from between the cable fixing portion and forms a deflection in a specific direction at the protruding portion of the optical fiber core wire. That.

  The optical connector is fixed to the optical fiber cable in the following manner, for example. That is, first, in a state where the cable fixing portion is fixed to the outer sheath portion of the optical fiber cable, the cable fixing portion is brought close to the fiber fixing portion, and the optical fiber core wire protruding from the end portion of the outer sheath portion of the optical fiber cable is projected. The part is inserted into a groove formed inside the fiber fixing part.

  Next, the cable fixing portion is brought close to the fiber fixing portion until the rear end of the built-in optical fiber and the tip of the optical fiber core are brought into contact with each other and a deflection is formed in the protruding portion of the optical fiber core. Then, in a state where the protrusion of the optical fiber core is bent, the protrusion of the optical fiber core is fixed to the built-in optical fiber by the fiber fixing portion, and the cable is fixed to the fiber fixing portion by the fixing support portion. Fix and support the fixed part. In the above manner, the optical connector is fixed to the optical fiber cable.

  Here, in this optical connector, the convex part for forming a deflection | deviation toward a specific direction in the protrusion part of an optical fiber core wire protrudes from between a fiber fixing | fixed part and a cable fixing | fixed part. Accordingly, as described above, even when the cable fixing portion is brought close to the fiber fixing portion and a deflection is formed in a part of the protruding portion of the optical fiber core wire, the direction in which the deflection is formed is determined by a specific direction (upper side). Can be specified. As a result, it is possible to prevent the deflection from interfering with the surrounding connector structure part (for example, an extended support part that extends from the cable fixing part and supports the protruding part of the optical fiber core wire from below). , A desired size of deflection can be formed.

  In order to solve the above-mentioned problem, the optical connector according to claim 2 is provided with a ferrule having a built-in optical fiber, the ferrule being integrated with the ferrule, and the built-in optical fiber being inserted into a groove formed therein. A fiber fixing portion for fixing the protruding portion of the optical fiber core protruding from the end portion of the outer sheath portion of the optical fiber cable in a state of being abutted with the built-in optical fiber in the groove, the ferrule, and the fiber A cable fixing part configured separately from the fixing part and fixed to the outer skin part of the optical fiber cable; and extending from the cable fixing part toward the fiber fixing part; and a protruding part of the optical fiber core wire A movable piece capable of taking a deformed state that can be bent in a specific direction at a protruding portion of the optical fiber core wire, and the fiber fixing portion A fixed support portion for fixing and supporting the cable fixing portion, and the fixed support portion provided in contact with the movable piece as the cable fixing portion is moved to the fiber fixing portion side. And a contact portion that brings the movable piece into the deformed state.

  The optical connector is fixed to the optical fiber cable in the following manner, for example. That is, first, in a state where the cable fixing portion is fixed to the outer sheath portion of the optical fiber cable, the cable fixing portion is brought close to the fiber fixing portion, and the optical fiber core wire protruding from the end portion of the outer sheath portion of the optical fiber cable is projected. The part is inserted into a groove formed inside the fiber fixing part.

  Next, when the cable fixing portion is further brought closer to the fiber fixing portion from this state, the movable piece is deformed by contacting the contact portion. As a result, the movable piece pushes up a part of the protruding portion of the optical fiber core wire, so that a deflection is formed in a part of the protruding portion of the optical fiber core wire.

  Then, in a state in which the optical fiber is bent, the protruding portion of the optical fiber core is fixed to the built-in optical fiber by the fiber fixing portion, and the cable fixing portion is fixedly supported to the fiber fixing portion by the fixing support portion. To do. In the above manner, the optical connector is fixed to the optical fiber cable.

  As described above, according to this optical connector, when the cable fixing portion is brought close to the fiber fixing portion, the movable piece can form a deflection in a part of the protruding portion of the optical fiber core wire and The formation direction can be defined in a specific direction (upper side). As a result, the deflection interferes with the surrounding connector structure portion (in this case, a movable piece extending from the cable fixing portion and also having a function as an extending support portion for supporting the protruding portion of the optical fiber core wire from below). Since this can be prevented, a deflection having a desired size can be formed.

  In order to solve the above-mentioned problem, an optical connector according to claim 3 is provided with a ferrule having a built-in optical fiber and the ferrule, and the built-in optical fiber is inserted into a groove formed therein. A fiber fixing portion for fixing the protruding portion of the optical fiber core protruding from the end portion of the outer sheath portion of the optical fiber cable in a state of being abutted with the built-in optical fiber in the groove, the ferrule, and the fiber A cable fixing part configured separately from the fixing part and fixed to the outer skin part of the optical fiber cable; a fixing support part for fixing and supporting the cable fixing part with respect to the fiber fixing part; and the fixing support. And can be bent in a specific direction at the protruding portion of the optical fiber core wire in contact with the protruding portion of the optical fiber core wire. It includes a movable piece that can take the form state, the.

  The optical connector is fixed to the optical fiber cable in the following manner, for example. That is, first, in a state where the cable fixing portion is fixed to the outer sheath portion of the optical fiber cable, the cable fixing portion is brought close to the fiber fixing portion, and the optical fiber core wire protruding from the end portion of the outer sheath portion of the optical fiber cable is projected. The part is inserted into a groove formed inside the fiber fixing part.

  Then, the cable fixing portion is brought close to the fiber fixing portion until the cable fixing portion is fixedly supported by the fixing support portion with respect to the fiber fixing portion, and at this time, the movable piece is brought into a deformed state. As a result, the movable piece pushes up a part of the protruding portion of the optical fiber core wire, so that the rear end of the built-in optical fiber and the front end of the optical fiber core wire are bent in the protruding portion of the optical fiber core wire. Is faced.

  Then, in a state in which a deflection is formed in a part of the protruding portion of the optical fiber core wire, the fiber fixing portion fixes the protruding portion of the optical fiber core wire to the built-in optical fiber, and further, the fixing support portion fixes the cable fixing portion. Fix and support the fiber fixing part. In the above manner, the optical connector is fixed to the optical fiber cable.

  Thus, according to this optical connector, as described above, when the cable fixing portion is brought close to the fiber fixing portion, the movable piece can bend the part of the protruding portion of the optical fiber core wire. At the same time, the direction in which this deflection is formed can be defined in a specific direction (upper side). As a result, it is possible to prevent the deflection from interfering with the surrounding connector structure part (for example, an extended support part that extends from the cable fixing part and supports the protruding part of the optical fiber core wire from below). , A desired size of deflection can be formed.

  In order to solve the above-mentioned problem, an optical connector according to claim 4 is provided with a ferrule having a built-in optical fiber, the ferrule being integrated with the ferrule, and the built-in optical fiber being inserted into a groove formed therein. A fiber fixing portion for fixing the protruding portion of the optical fiber core protruding from the end portion of the outer sheath portion of the optical fiber cable in a state of being abutted with the built-in optical fiber in the groove, the ferrule, and the fiber A cable fixing portion configured separately from the fixing portion and fixed to the outer skin portion of the optical fiber cable, and a guide hole having a central axis at a position eccentric to the central axis of the groove and communicating with the groove And a fixing support part for fixing and supporting the cable fixing part with respect to the fiber fixing part.

  The optical connector is fixed to the optical fiber cable in the following manner, for example. That is, first, in a state where the cable fixing portion is fixed to the outer sheath portion of the optical fiber cable, the cable fixing portion is brought close to the fiber fixing portion, and the optical fiber core wire protruding from the end portion of the outer sheath portion of the optical fiber cable is projected. After the portion is inserted into the guide hole of the fixed support portion, it is inserted into a groove formed inside the fiber fixing portion.

  Next, the cable fixing portion is brought close to the fiber fixing portion until the rear end of the built-in optical fiber and the tip of the optical fiber core are brought into contact with each other and a deflection is formed in the protruding portion of the optical fiber core. Then, in a state in which the optical fiber is bent, the protruding portion of the optical fiber core wire is fixed to the built-in optical fiber by the fiber fixing portion, and the cable fixing portion is fixedly supported to the fiber fixing portion by the fixing support portion. To do. In the above manner, the optical connector is fixed to the optical fiber cable.

  Here, in this optical connector, the guide hole has a central axis at a position eccentric to the central axis of the groove. Therefore, as described above, when the cable fixing portion is brought close to the fiber fixing portion, the center axis of the guide hole is set at a position eccentric with respect to the center axis of the groove. A deflection can be formed in a part of the portion, and the direction in which the deflection is formed can be defined in a specific direction (upper side). As a result, it is possible to prevent the deflection from interfering with the surrounding connector structure part (for example, an extended support part that extends from the cable fixing part and supports the protruding part of the optical fiber core wire from below). , A desired size of deflection can be formed.

  As described above in detail, according to the present invention, a deflection having a desired size can be formed.

It is a figure which shows the state which fixed the optical fiber cable to the optical connector which concerns on 1st embodiment of this invention. It is a figure which shows the order which fixes an optical fiber cable to the optical connector shown by FIG. It is a figure which shows the order which fixes an optical fiber core wire to the fiber fixing part shown by FIG. It is a figure which shows the modification of the optical connector which concerns on 1st embodiment of this invention. It is a figure which shows the state which fixed the optical fiber cable to the optical connector which concerns on 2nd embodiment of this invention. It is a figure which shows the order which fixes an optical fiber cable to the optical connector shown by FIG. It is a figure which shows the state which fixed the optical fiber cable to the optical connector which concerns on 3rd embodiment of this invention. It is a figure which shows the order which fixes an optical fiber cable to the optical connector shown by FIG. It is a figure which shows the order which fixes an optical fiber cable to the optical connector which concerns on 4th embodiment of this invention.

[First embodiment]
First, a first embodiment of the present invention will be described.

  An optical connector 60 according to the first embodiment of the present invention shown in FIG. 1 is attached to a distal end portion of an optical fiber cable 120 described later, and includes a plug 62, a cable fixing member 64, a frame 66, and a fixing. A storage member 68 as a support portion is provided as a main configuration.

  The plug 62 includes a ferrule 70 and a fiber fixing portion 72. The ferrule 70 has a built-in optical fiber 74 and is integrally assembled with a substrate 76 of a fiber fixing portion 72 described later.

  The fiber fixing portion 72 is a so-called mechanical splice system, and includes a substrate 76, a pair of lid members 78, and a pressing member 80. A groove 82 is formed in the surface portion of the substrate 76 along the axial direction of the optical connector 60, and the rear end side of the built-in optical fiber 74 is inserted into the groove 82.

  The pair of lid members 78 are arranged side by side in the longitudinal direction of the groove 82, and each has a size and shape that covers the surface portion of the substrate 76 in which the groove 82 is formed. It is provided facing. Further, the pair of lid members 78 are pressed toward the substrate 76 by the pressing member 80.

  In this optical connector 60, as shown in FIG. 3, a concave portion 86 into which a wedge 84, which is provided as an integral part of the optical connector 60 or as a separate jig, can be inserted, has a substrate 76 and a pair of A lid member 78 is formed. The pair of lid members 78 can be separated from the substrate 76 by inserting the wedge 84 into the recess 86.

  As shown in FIG. 1, the cable fixing member 64 is configured separately from the plug 62 and the frame 66, and a pair of gripping portions as a cable fixing portion that grips the outer skin portion 124 of the optical fiber cable 120 described later. 88 and an extended support portion 90. The extension support portion 90 is for supporting the protruding portion 122A of the optical fiber core wire 122 from below, and extends from one of the pair of grip portions 88 toward the fiber fixing portion 72 side. Further, a protruding portion 92 is formed at the tip of the extended support portion 90 toward the lid 108 described later. The height of the convex portion 92 is set to be higher than the central axis A2 of the fiber fixing portion 72 (the central axis of the groove 82).

  The housing member 68 has a fitting portion 94 formed on the frame 66 side. When the fitting portion 94 is fitted to the housing member 68 side of the frame 66, the frame 66 and the housing member 68 are separated from each other. They are assembled together.

  The above-described fiber fixing portion 72 is accommodated inside the frame 66, and the ferrule 70 provided integrally with the fiber fixing portion 72 protrudes to the outside through a hole portion 96 formed on the distal end side of the frame 66. Has been. On the other hand, on the frame 66 side of the storage member 68, a guide hole 100 is formed which communicates with the groove 82 and increases in diameter toward the cable fixing member 64 side.

  Further, the above-described substrate 76 and lid member 78 have an enlarged diameter portion 102, and a spring 104 is accommodated in a compressed state between the enlarged diameter portion 102 and the fitting portion 94. The plug 62 is urged toward the distal end side of the optical connector 60 by the spring 104.

  The storage member 68 described above includes a main body 106 having a storage chamber 106A and a lid 108 for opening and closing the storage chamber 106A. The lid 108 is pivotally connected to the main body 106 at the front end side, and is in an open state (see the upper diagram in FIG. 2) for opening the storage chamber 106A and a closed state (see the lower diagram in FIG. 2). ) And can be taken. Further, a retaining portion 110 for preventing the cable fixing member 64 from coming off is formed on the rear end side of the lid 108.

  Although not shown, the storage member 68 includes a restriction structure for restricting the movement of the cable fixing member 64 toward the fiber fixing portion 72 and a holding structure for holding the lid 108 in a closed state. Yes.

  The optical fiber cable 120 includes an optical fiber core wire 122 and a sheath portion 124 (sheath or tensile body) that covers the optical fiber core wire 122. Further, at the distal end side of the optical fiber cable 120, a part of the optical fiber core wire 122 protrudes from the end portion of the outer skin portion 124 as a protruding portion 122A by cutting the outer skin portion 124 described above.

  Next, the operation and effect will be described together with a method for fixing the optical connector 60 to the tip of the optical fiber.

  First, as shown in the upper diagram of FIG. 2, the outer sheath portion 124 on the distal end side of the optical fiber cable 120 is removed to expose the optical fiber core wire 122. Subsequently, the distal end side of the outer skin portion 122 of the optical fiber cable 120 is gripped by the pair of holding portions 88, and the cable fixing member 64 is fixed to the optical fiber cable 120. Furthermore, the bare fiber 122B is exposed by removing the coating on the distal end side of the protruding portion 122A (exposed portion) of the optical fiber core wire 122 protruding from the end portion of the outer sheath portion 124 of the optical fiber cable 120, thereby exposing the bare fiber 122B. Cut the tip.

  Then, the lid 108 is opened, the cable fixing member 64 is brought close to the fiber fixing portion 72, the distal end side of the protruding portion 122 </ b> A of the optical fiber core wire 122 is inserted into the groove 82 through the guide hole 100, and the cable fixing member 64. Is disposed in the storage chamber 106A (see FIG. 2).

  Next, the cable fixing member 64 is fixed to the fiber fixing portion 72 until the rear end of the built-in optical fiber 74 and the tip of the optical fiber core wire 122 are abutted to form a deflection 126 in the protruding portion 122A of the optical fiber core wire 122. (See the lower figure in FIG. 2).

  Then, the wedge 84 is removed from the fiber fixing portion 72 as shown in FIG. 3 with the deflection 126 formed in the protruding portion 122A of the optical fiber core wire 122. Thereby, the lid member 78 is pressed toward the substrate 76 by the pressing member 80, and the protruding portion 122 </ b> A of the optical fiber core wire 122 is fixed to the fiber fixing portion 72.

  Next, with the lid 108 closed, the cable fixing member 64 is stored in the storage member 68, whereby the cable fixing member 64 is fixedly supported to the fiber fixing portion 72. As described above, the optical connector 60 is fixed to the optical fiber cable 120.

  Here, in this optical connector 60, as shown in FIG. 1, a convex portion 92 is formed between the fiber fixing portion 72 and the cable fixing member 64. The height of the convex portion 92 is set to be higher than the central axis A2 of the fiber fixing portion 72. Therefore, as described above, even when the cable fixing member 64 is brought close to the fiber fixing portion 72 to form the deflection 126 in a part of the protruding portion 122A of the optical fiber core wire 122, the direction in which the deflection 126 is formed by the convex portion 92. Can be defined in a specific direction (upper side). Accordingly, the deflection 126 can be prevented from interfering with the surrounding connector structure portion (in this case, the extended support portion 90), so that the deflection 126 having a desired size can be formed.

  As a result, the abutting force between the optical fiber core wire 122 and the built-in optical fiber 74 can be adjusted to an appropriate value, so that the abutting force is insufficient and the optical characteristics deteriorate or the abutting force is excessive. Therefore, it is possible to prevent the optical fiber core wire 122 and the built-in optical fiber 74 from being chipped.

  In the present embodiment, the convex portion 92 is formed at the tip of the extended support portion 90 formed on the cable fixing member 64. However, as shown in FIG. You may protrude from the main-body part 106. FIG.

  When configured in this way, at the stage of inserting the protruding portion 122A of the optical fiber core wire 122 into the groove 82 (see the upper diagram of FIG. 2), the protruding portion 122A of the optical fiber core wire 122 does not bend. The protrusion 122A of the optical fiber core wire 122 can be easily inserted into the groove 82.

  In addition, the convex portion 92 may be configured to be movable in the lateral direction of the optical connector 60 (front and back direction in the drawing). Then, when forming the flexure 126, the convex portion 92 is moved on the central axis of the optical connector 60 to form the flexure 126 in a part of the protruding portion 122 A of the optical fiber core wire 122. After the core wire 122 and the built-in optical fiber 74 are butted and connected, the convex portion 92 is moved to a position deviated from the central axis of the optical connector 60 and the cable fixing member 64 is retracted to eliminate the deflection 126. Anyway.

  In the present embodiment, the height of the convex portion 92 is set to be higher than the central axis A2 of the fiber fixing portion 72. However, the convex portion 92 defines the formation direction of the deflection 126 in a specific direction (upper side). If possible, the height of the convex portion 92 may be set at the same position as the central axis A <b> 2 of the fiber fixing portion 72.

[Second Embodiment]
Next, a second embodiment of the present invention will be described.

  The configuration of the optical connector 130 according to the second embodiment of the present invention shown in FIG. 5 is changed as follows from the optical connector 60 according to the first embodiment of the present invention described above.

  That is, the cable fixing member 64 is formed with a movable piece 132 that extends from one of the pair of gripping portions 88 toward the fiber fixing portion 72. The movable piece 132 has a function of supporting the protruding portion 122A of the optical fiber core wire 122 from the lower side in the same manner as the extending support portion 90 described above. Further, a convex portion 134 that protrudes toward the lid 108 is formed at the tip of the movable piece 132. On the other hand, a contact portion 136 that protrudes to the same side as the convex portion 134 is formed on the main body portion 106 of the storage member 68. The contact portion 136 is formed in a mountain shape in a side view.

  In the optical connector 130, the movable piece 132 comes into contact with the inclined surface of the contact portion 136 as the cable fixing member 64 is moved to the fiber fixing portion 72, thereby deforming the movable piece 132. The convex portion 134 of the movable piece 132 is positioned higher than the center axis A2 of the fiber fixing portion 72.

  Next, the operation and effect will be described together with a method of fixing the optical connector 130 to the tip of the optical fiber.

  First, as in the first embodiment of the present invention described above, the lid 108 is opened, and the cable fixing member 64 is fixed to the outer skin portion 124 of the optical fiber cable 120 (see the upper diagram of FIG. 6). .

  Then, the cable fixing member 64 is brought close to the fiber fixing portion 72, the protruding portion 122A of the optical fiber core wire 122 is inserted into the groove 82 through the guide hole 100, and the cable fixing member 64 is disposed in the storage chamber 106A (FIG. 6). (See the middle figure).

  Next, when the cable fixing member 64 is further brought closer to the fiber fixing portion 72 from this state, the movable piece 132 comes into a deformed state due to the movable piece 132 coming into contact with the inclined surface of the contact portion 136. The convex portion 134 is positioned at a position higher than the central axis A2 of the fiber fixing portion 72. As a result, the convex part 134 at the tip of the movable piece 142132 pushes up a part of the protruding part 122A of the optical fiber core wire 122, so that a deflection 126 is formed in a part of the protruding part 122A of the optical fiber core wire 122. (See the lower figure in FIG. 6).

  Then, the wedge 84 is removed from the fiber fixing portion 72 in a state where the deflection 126 is formed in the optical fiber core wire 122 (see FIG. 3). Thereby, the lid member 78 is pressed toward the substrate 76 by the pressing member 80, and the protruding portion 122 </ b> A of the optical fiber core wire 122 is fixed to the fiber fixing portion 72.

  Next, with the lid 108 closed, the cable fixing member 64 is stored in the storage member 68, whereby the cable fixing member 64 is fixedly supported to the fiber fixing portion 72. As described above, the optical connector 130 is fixed to the optical fiber cable 120.

  Thus, according to this optical connector 130, when the cable fixing member 64 is brought close to the fiber fixing portion 72 as described above, the movable piece 132 bends to a part of the protruding portion 122A of the optical fiber core wire 122. 126 can be formed, and the forming direction of the deflection 126 can be defined in a specific direction (upper side). Accordingly, it is possible to prevent the flexure 126 from interfering with the surrounding connector structure portion (in this case, the movable piece 132 having a function as the extension support portion), so that the flexure 126 having a desired size is formed. be able to.

  As a result, the abutting force between the optical fiber core wire 122 and the built-in optical fiber 74 can be adjusted to an appropriate value, so that the abutting force is insufficient and the optical characteristics deteriorate or the abutting force is excessive. Therefore, it is possible to prevent the optical fiber core wire 122 and the built-in optical fiber 74 from being chipped.

  Further, according to the optical connector 130, the protrusion 122A of the optical fiber core 122 is not bent at the stage of inserting the protrusion 122A of the optical fiber core 122 into the groove 82 (see the upper diagram of FIG. 6). The protrusion 122A of the optical fiber core wire 122 can be easily inserted into the groove 82.

  In this embodiment, when the movable piece 132 is deformed, the convex portion 134 at the tip of the movable piece 132 is configured to be positioned at a position higher than the central axis A2 of the fiber fixing portion 72. If the formation direction of the deflection 126 can be defined in a specific direction (upper side) by the convex portion 134, the convex portion 134 at the tip of the movable piece 132 is deformed with respect to the fiber fixing portion 72 when the movable piece 132 is deformed. You may be comprised so that it may be located in the same position as center axis A2.

[Third embodiment]
Next, a third embodiment of the present invention will be described.

  The configuration of the optical connector 140 according to the third embodiment of the present invention shown in FIG. 7 is changed as follows with respect to the optical connector 60 according to the first embodiment of the present invention described above.

  That is, the cable fixing member 64 is formed with an extension support portion 141 that extends from one of the pair of gripping portions 88 toward the plug 62 side. A movable piece 142 having elasticity is formed on the main body portion 106 of the storage member 68, and a convex portion 144 that protrudes toward the lid 108 is formed at the tip of the movable piece 142. The movable piece 142 is configured to be elastically deformable so that the convex portion 144 is positioned at a position higher than the central axis A2 of the fiber fixing portion 72 when a force is applied from below.

  Next, the operation and effect will be described together with a method of fixing the optical connector 140 to the tip of the optical fiber.

  First, as in the first embodiment of the present invention described above, the lid 108 is opened and the cable fixing member 64 is fixed to the outer sheath portion 124 of the optical fiber cable 120 (see the upper diagram in FIG. 8). .

  Then, the cable fixing member 64 is brought close to the fiber fixing portion 72, the protruding portion 122A of the optical fiber core wire 122 is inserted into the groove 82 through the guide hole 100, and the cable fixing member 64 is disposed in the storage chamber 106A (FIG. 8). (See the middle figure).

  At this time, a force is applied to the movable piece 142 from below to elastically deform the movable piece 142, and the convex portion 144 at the tip of the movable piece 142 is positioned higher than the central axis A2 of the fiber fixing portion 72. As a result, the convex portion 144 at the tip of the movable piece 142 pushes up a part of the protruding portion 122A of the optical fiber core wire 122. The rear end of the fiber 74 and the front end of the optical fiber core wire 122 are abutted.

  Then, the wedge 84 is removed from the fiber fixing portion 72 in a state where the deflection 126 is formed in the optical fiber core wire 122 (see FIG. 3). Thereby, the lid member 78 is pressed toward the substrate 76 by the pressing member 80, and the protruding portion 122 </ b> A of the optical fiber core wire 122 is fixed to the fiber fixing portion 72.

  Next, the lid 108 is closed, the cable fixing member 64 is stored in the storage member 68, and the cable fixing member 64 is fixedly supported to the fiber fixing portion 72. As described above, the optical connector 140 is fixed to the optical fiber cable 120.

  Thus, according to the optical connector 140, when the cable fixing member 64 is brought close to the fiber fixing portion 72 as described above, the movable piece 142 bends to a part of the protruding portion 122A of the optical fiber core wire 122. 126 can be formed, and the forming direction of the deflection 126 can be defined in a specific direction (upper side). Accordingly, it is possible to prevent the deflection 126 from interfering with the surrounding connector structure portion (in this case, the extended support portion 141), so that the deflection 126 having a desired size can be formed.

  As a result, the abutting force between the optical fiber core wire 122 and the built-in optical fiber 74 can be adjusted to an appropriate value, so that the abutting force is insufficient and the optical characteristics deteriorate or the abutting force is excessive. Therefore, it is possible to prevent the optical fiber core wire 122 and the built-in optical fiber 74 from being chipped.

  In the present embodiment, when the movable piece 142 is most elastically deformed by applying a force from below, the convex portion 144 at the tip of the movable piece 142 is positioned higher than the central axis A2 of the fiber fixing portion 72. However, if the formation direction of the deflection 126 can be defined in a specific direction (upper side) by the convex portion 144, the movable piece 142 is applied with a force from the lower side to be most elastically deformed. In this case, the convex portion 144 at the tip of the movable piece 142 may be configured to be located at the same position as the central axis A2 of the fiber fixing portion 72.

  Further, in a state where the lid 108 is closed and the cable fixing member 64 is stored in the storage member 68, the cable fixing member 64 may be retracted and the deflection 126 may be eliminated. With such a configuration, it is possible to prevent the optical characteristics of the optical fiber core 122 from being deteriorated due to the deflection 126.

[Fourth embodiment]
Next, a fourth embodiment of the present invention will be described.

  The optical connector 150 according to the fourth embodiment of the present invention shown in FIG. 9 is configured as follows with respect to the optical connector 60 according to the first embodiment of the present invention described above.

  That is, the guide hole 100 is configured to have the central axis A3 at a position eccentric to the lid 108 side with respect to the central axis A2 of the fiber fixing portion 72 (the central axis of the groove 82).

  Next, the operation and effect will be described together with a method of fixing the optical connector 150 to the tip of the optical fiber.

  First, as in the first embodiment of the present invention described above, the lid 108 is opened and the cable fixing member 64 is fixed to the outer skin portion 124 of the optical fiber cable 120. Further, the cable fixing member 64 is brought close to the fiber fixing portion 72, and the protruding portion 122 A of the optical fiber core wire 122 is inserted into the guide hole 100 and then inserted into the groove 82. (Refer to the upper diagram of FIG. 9).

  Next, the cable fixing member 64 is fixed to the fiber fixing portion 72 until the rear end of the built-in optical fiber 74 and the tip of the optical fiber core wire 122 are abutted to form a deflection 126 in the protruding portion 122A of the optical fiber core wire 122. Move closer to.

  Then, the wedge 84 is removed from the fiber fixing portion 72 in a state where the deflection 126 is formed in the optical fiber core wire 122 (see FIG. 3). Thereby, the lid member 78 is pressed toward the substrate 76 by the pressing member 80, and the protruding portion 122 </ b> A of the optical fiber core wire 122 is fixed to the fiber fixing portion 72.

  Next, with the lid 108 closed, the cable fixing member 64 is stored in the storage member 68, whereby the cable fixing member 64 is fixedly supported to the fiber fixing portion 72. As described above, the optical connector 150 is fixed to the optical fiber cable 120.

  Here, in the optical connector 150, the guide hole 100 has a central axis A3 at a position eccentric to the lid 108 side with respect to the central axis A2 of the fiber fixing portion 72. Therefore, as described above, when the cable fixing member 64 is brought close to the fiber fixing portion 72, the center axis A3 of the guide hole 100 is set at a position eccentric with respect to the center axis A2 of the fiber fixing portion 72. Accordingly, the deflection 126 can be formed in a part of the protruding portion 122A of the optical fiber core wire 122, and the direction in which the deflection 126 is formed can be defined in a specific direction (upper side). Accordingly, the deflection 126 can be prevented from interfering with the surrounding connector structure portion (in this case, the extended support portion 90), so that the deflection 126 having a desired size can be formed.

  As a result, the abutting force between the optical fiber core wire 122 and the built-in optical fiber 74 can be adjusted to an appropriate value, so that the abutting force is insufficient and the optical characteristics deteriorate or the abutting force is excessive. Therefore, it is possible to prevent the optical fiber core wire 122 and the built-in optical fiber 74 from being chipped.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and other various modifications can be made without departing from the spirit of the present invention. It is.

60 Optical connector 64 Cable fixing member (cable fixing part)
68 Storage member (fixed support)
70 Ferrule 72 Fiber fixing portion 74 Built-in optical fiber 82 Groove 90 Extension support portion 92 Protrusion portion 100 Guide hole 120 Optical fiber cable 122 Optical fiber core wire 122A Optical fiber core wire protrusion portion 124 Optical fiber cable sheath portion 130 Optical connector 132 movable piece 134 convex portion 136 contact portion 140 optical connector 141 extension support portion 142 movable piece 144 convex portion 150 optical connector

Claims (4)

A ferrule having a built-in optical fiber;
The integrated optical fiber is provided integrally with the ferrule, and the built-in optical fiber is inserted into a groove formed inside, and the protruding portion of the optical fiber core wire protruding from the end of the outer portion of the optical fiber cable is formed in the groove. A fiber fixing portion for fixing the optical fiber in a state of being in contact with the built-in optical fiber;
The ferrule and the fiber fixing part are configured separately, and a cable fixing part fixed to the outer skin part of the optical fiber cable,
A fixing support portion for fixing and supporting the cable fixing portion with respect to the fiber fixing portion;
A protrusion protruding from between the fiber fixing portion and the cable fixing portion and forming a deflection in a specific direction at the protruding portion of the optical fiber core;
With optical connector. A ferrule having a built-in optical fiber;
The integrated optical fiber is provided integrally with the ferrule, and the built-in optical fiber is inserted into a groove formed inside, and the protruding portion of the optical fiber core wire protruding from the end of the outer portion of the optical fiber cable is formed in the groove. A fiber fixing portion for fixing the optical fiber in a state of being in contact with the built-in optical fiber;
The ferrule and the fiber fixing part are configured separately, and a cable fixing part fixed to the outer skin part of the optical fiber cable,
A deformation that extends from the cable fixing portion toward the fiber fixing portion and that is in contact with the protruding portion of the optical fiber core wire to form a deflection in a specific direction at the protruding portion of the optical fiber core wire. A movable piece that can take a state;
A fixing support portion for fixing and supporting the cable fixing portion with respect to the fiber fixing portion;
A contact portion that is provided in the fixed support portion and is brought into contact with the movable piece as the cable fixing portion is moved to the fiber fixing portion side to bring the movable piece into the deformed state;
With optical connector. A ferrule having a built-in optical fiber;
The integrated optical fiber is provided integrally with the ferrule, and the built-in optical fiber is inserted into a groove formed inside, and the protruding portion of the optical fiber core wire protruding from the end of the outer portion of the optical fiber cable is formed in the groove. A fiber fixing portion for fixing the optical fiber in a state of being in contact with the built-in optical fiber;
The ferrule and the fiber fixing part are configured separately, and a cable fixing part fixed to the outer skin part of the optical fiber cable,
A fixing support portion for fixing and supporting the cable fixing portion with respect to the fiber fixing portion;
A movable piece that is provided on the fixed support portion and can be deformed so as to be in contact with the protruding portion of the optical fiber core wire to form a deflection in a specific direction in the protruding portion of the optical fiber core wire;
With optical connector. A ferrule having a built-in optical fiber;
The integrated optical fiber is provided integrally with the ferrule, and the built-in optical fiber is inserted into a groove formed inside, and the protruding portion of the optical fiber core wire protruding from the end of the outer portion of the optical fiber cable is formed in the groove. A fiber fixing portion for fixing the optical fiber in a state of being in contact with the built-in optical fiber;
The ferrule and the fiber fixing part are configured separately, and a cable fixing part fixed to the outer skin part of the optical fiber cable,
A fixed support portion for fixing and supporting the cable fixing portion with respect to the fiber fixing portion, having a central axis at a position eccentric to the central axis of the groove and having a guide hole communicating with the groove; ,
With optical connector.