JP2010175760A - Optical connector and method of splicing secondary coated optical fibers - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical connector in which single core secondary coated optical fibers are easily inserted by suppressing the bend of the secondary coated optical fibers and a bending space is formed for the secondary coated optical fibers when contact pressure is to be generated between primary coated optical fibers. <P>SOLUTION: When a slide member slides and the wide part of the slide member faces to a V-shaped groove part to close the V-shaped groove part, a bend suppressing space of the optical fiber is formed by the V-shaped groove part and the wide width part, and when the slide member slides and the narrow part of the slide member faces the V-shaped groove part to open the upper part of the V-shaped groove, the bending space part is formed for the optical fiber by the V-shaped groove and the narrow part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an optical connector for fixing an optical fiber and a method for joining optical fiber core wires.

  Insert the tip of the optical fiber core that has been treated to cut the tip of the optical fiber exposed by removing the coating from the rear end of the optical connector section, and use the end face of the optical fiber core as the end face of the counterpart optical fiber. Then, the optical fiber is connected to the optical connector by fixing the butt portion.

  Patent Document 1 describes a structure in which a buckling load is obtained by generating a deflection in an optical fiber.

  In Patent Literature 2, an openable / closable element holding part that holds an optical fiber element is provided in a groove part on which the optical fiber element is placed to firmly fix the optical fiber element, thereby reducing the amount of deflection of the optical fiber. A wire holder that is managed is described.

  Patent Document 3 describes a structure in which an optical fiber is bent and curved at an inclined surface inside an optical connector.

  Patent Document 4 describes an optical connector provided with a deflection regulating hole that communicates with an insertion hole and regulates the deflection of a boundary portion.

  Patent Documents 5 and 6 describe forming a flexible space.

JP 2005-77846 A JP 2007-121888 A JP 2001-208938 A JP 2007-121843 A Japanese Patent No. 3965783 Japanese Patent Application Laid-Open No. 11-14289

  2. Description of the Related Art Conventionally, bending of an optical fiber is generated, and two optical fiber cores that are opposed to each other by a buckling load due to the bending are fixed. It has been proposed to manage this deflection amount. In these conventional examples, in order to generate a constant contact pressure between the end faces of the optical fiber cores, the space that allows the optical fiber cores to bend is not used when the optical fiber cores are inserted or placed. However, no consideration has been given to a function that takes into account the ease of optical fiber insertion operation when an optical fiber is inserted and the generation of a flex space when contact pressure is generated. It is important that the deflection space is generated when the contact pressure is generated, and is not required at the time of insertion.

  The present invention has been made in view of the above points, and when inserting a single optical fiber or a plurality of optical fibers into an optical connector, the optical fiber can be easily inserted by suppressing the deflection of the optical fibers. An object of the present invention is to provide an optical connector in which a bending space is formed in an optical fiber core wire when a contact pressure is generated between the optical fiber strands.

The present invention includes a first optical connector that includes an optical fiber, and that holds an optical fiber core that covers the optical fiber, and a counterpart optical fiber that is in contact with the optical fiber. And a second optical connector that holds an optical fiber core that covers the optical fiber, and the first optical connector is housed in a housing and a space formed inside the housing. The optical fiber core wire is formed so that the optical fiber core wire is inserted through an insertion hole formed in the optical fiber holding member, and the inserted optical fiber core wire is formed inside the optical fiber holding member. In the optical connector arranged to be
The portion of the optical fiber strand in which the deflection of the optical fiber core wire passes through the ferrule of the first connector is slightly protruded from the end surface of the insertion destination, and the end surface of the ferrule of the first connector and the ferrule of the second connector It is formed by being pushed back in the inner direction of the ferrule of the first connector by the contact between each other, and the optical fiber strands are connected by the deflection of the optical fiber core formed by the pushing back. And
The optical fiber holding member includes an optical fiber core wire deflection suppressing portion, and is formed to be movable in the optical fiber holding member. The portion forming member provides an optical connector characterized in that when the optical fiber core wire is moved by releasing the bending suppression state of the deflection suppressing portion, a deflection space portion of the optical fiber core wire is formed.

  According to the present invention, the deflection space portion forming member is moved in the optical fiber holding member in a deflection direction with respect to the longitudinal direction of the optical fiber core wire, and the deflection suppression portion of the optical fiber core wire is at a predetermined fixed position. The optical connector is characterized in that a flexible space portion of the optical fiber core wire is formed by being suppressed at the moving position and being moved at the moving position.

  According to the present invention, the deflection space portion forming portion is rotationally moved within the optical fiber holding member with respect to the longitudinal direction of the optical fiber core wire, and the deflection suppressing portion of the deflection of the optical fiber core wire at a predetermined rotational position. The optical connector is characterized in that a flexible space of the optical fiber core wire is formed by being rotated at the rotational position.

The present invention includes a first optical connector that includes an optical fiber, and that holds an optical fiber core that covers the optical fiber, and a counterpart optical fiber that is in contact with the optical fiber. An optical connector comprising: a second optical connector that holds an optical fiber core that covers the optical fiber;
The first optical connector is formed from a housing and an optical fiber holding member housed in a space formed inside the housing,
A step is formed in the optical fiber holding member by a wide portion and a narrow portion, and a slide member storage hole and a V-groove portion are formed facing the slide member storage hole in the narrow portion,
The slide member storage hole is slidable in the hole direction, and a slide member formed with a wide portion and a narrow portion is stored therein.
When the slide member slides and the wide portion of the slide member faces the V-groove portion, the upper end of the V-groove portion is closed and the V-groove portion and the wide portion form a deflection suppressing space portion of the optical fiber core wire. When the slide member slides and the narrow part of the slide member faces the V-groove part, the upper part of the V-groove part is opened and the flex space of the optical fiber core wire is formed by the V-groove part and the narrow part. An optical connector characterized by forming a portion is provided.

  In the present invention, a wide surface that forms the wide portion of the slide storage hole by extending one inclined surface that forms the V-groove is formed, and the wide surface that forms the wide portion of the slide member on the wide surface Provided is an optical connector characterized in that surfaces are engaged and the deflection suppressing space is formed when the surfaces are engaged.

  The present invention also provides an optical connector in which the flexible space is formed when the slide member slides and the narrow width portion of the slide member is positioned at the upper end of the V-groove portion. To do.

  According to the present invention, in any of the above, the optical fiber strand that is inserted through the ferrule of the first connector is arranged so as to slightly protrude from the end surface of the insertion destination of the ferrule when inserted. An optical connector is provided.

The present invention includes a first optical connector that includes an optical fiber, and that holds an optical fiber core that covers the optical fiber, and a counterpart optical fiber that is in contact with the optical fiber. And a second optical connector that holds an optical fiber core that covers the optical fiber, and the first optical connector is housed in a housing and a space formed inside the housing. The optical fiber core wire is formed so that the optical fiber core wire is inserted through an insertion hole formed in the optical fiber holding member, and the inserted optical fiber core wire is formed inside the optical fiber holding member. In an optical fiber core wire joining method using an optical connector arranged in
The part of the optical fiber strand that is inserted through the ferrule of the first connector and the end of the ferrule of the first connector and the end face of the ferrule of the second connector are slightly protruding from the end face of the insertion destination. It is formed by being pushed back in the inner direction of the ferrule of the first connector by contact between each other, and the deflection of the optical fiber core wire formed by this pushing back is accommodated in the deflection space and positioned. The optical fiber strands are brought into contact with each other by the positioned deflection,
An optical fiber core having an insertion portion for an optical fiber core wire in the holding portion and being movably formed in the holding member while suppressing the optical fiber core wire by a bending space portion forming member of the optical fiber core wire. When the optical fiber core wires are brought into contact with each other, the restrained state stored in the insertion portion in which the formed deflection space portion is formed is released, and the optical fiber is inserted. Provided is a method for joining optical fiber cores using an optical connector, characterized by accommodating the deflection of the core wires.

  In the present invention, as described above, when the deflection space portion forming member is moved, the deflection space portion is formed from the deflection suppression space portion of the optical fiber core wire, so that the deflection is suppressed when the optical fiber is inserted. An optical fiber insertion operation can be performed using the space, and a bending space can be generated when the contact pressure is generated to deflect the optical fiber. As described above, the insertion operation can be easily performed, and a predetermined contact pressure can be generated between the optical fiber strands by allowing the optical fiber to bend when the contact pressure is generated.

  In addition, as described above, according to the present invention, when the slide member slides and the wide portion of the slide member faces the V-groove portion, the upper end of the V-groove portion is closed and the optical fiber core wire is formed by the V-groove portion and the wide portion. When the slide member slides and the narrow portion of the slide member faces the V-groove portion, the upper portion of the V-groove portion is opened and the V-groove portion and the narrow portion of the optical fiber core wire are formed. Since the bending space is formed, the optical fiber is inserted by using the bending suppression space when inserting the optical fiber, and the bending space is generated when the contact pressure is generated, and the optical fiber is bent. be able to. As described above, the insertion operation can be easily performed, and a predetermined contact pressure can be generated between the optical fiber strands by allowing the optical fiber to bend when the contact pressure is generated.

1A and 1B are diagrams showing the configuration of an embodiment of the present invention, in which FIG. 1A shows its appearance, and FIG. 1B shows a longitudinal section. FIG.1 (c) is a figure which shows a protrusion part and the storage method. FIG. 2A shows a state in which the optical fiber core wire is fixed, and FIG. 2B shows a state in which the insertion hole is expanded. In the structure of FIG. 1, it is a figure which shows the formation position of the bending space part of an optical fiber core wire, FIG. 3 (a) is the external appearance, FIG.3 (b) is a figure which shows a longitudinal direction sectional drawing. 4A and 4B show details of the optical fiber deflection forming portion, FIG. 4A shows a method for forming a deflection suppressing space, and FIG. 4B shows a method for forming the bending space. FIG. 5A is a diagram corresponding to FIG. 4, FIG. 5A is an enlarged view of a part of FIG. 4A, and FIG. 5B is an enlarged view of a part of FIG. 4B. . The figure which shows the structure of a slide member. FIGS. 7A and 7B are diagrams illustrating the bending state of the optical fiber core, in which FIG. 7A is an overall view and FIG. The flowchart figure about the method of forming a bending part in an optical fiber core wire. The figure which shows the structure of the 2nd Example of this invention. The figure which shows the structure of the 3rd Example of this invention.

Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a configuration of an optical connector 100 according to an embodiment of the present invention, FIG. 1A shows an appearance thereof, and FIG. 1B shows a longitudinal section of the optical connector 100 of FIG. Indicates. In this embodiment, the optical fiber core wire connected by the optical connector represents a single optical fiber core wire, but this embodiment can also be applied to a plurality of optical fiber core wires. In the following example, a single-core optical fiber core wire will be described as an example, but the present invention is not limited to a single-core optical fiber core wire.

  In these drawings, an optical connector 100 is covered with a first optical connector 1 that holds an optical fiber core covered with an optical fiber and a counterpart optical fiber that is connected to the optical fiber. And a second optical connector for holding the optical fiber core.

  The first optical connector 1 includes a housing 3, a space portion 4 inside the housing 3, an end cap 5 provided at the entrance of the housing 3, and an optical fiber holding member 6 ( An optical fiber housing member), a ferrule 7 disposed in the space 4 adjacent to the optical fiber holding member 6, and a protective member 61 provided around the optical fiber 14 in the ferrule to protect it. And a holding member 62 provided in the space 4 between the optical fiber holding member 6 and the ferrule 7 and between the ferrule 7 and the housing 3.

  The end cap 5 has an insertion hole 12 through which an optical fiber core wire 11 covered with an optical fiber strand (optical fiber glass) is inserted. Therefore, here, a glass optical fiber is defined as an optical fiber and a fiber coated with a resin is defined as an optical fiber core, which is denoted by reference numeral 11.

  The optical fiber 14 having the sheath removed from the optical fiber core wire is inserted through the insertion hole 13 (same as 14 in the figure) inside the ferrule 7 from the inlet side to the outlet portion on the opposite side. Exposed.

  The second optical connector of the counterpart is housed in a form in which the outer surface is held by the first optical connector 1. The second optical connector has a tube portion, a cylindrical space portion inside the tube portion, and a ferrule facing the ferrule 7 described above. From the insertion hole provided in the ferrule, the tip of the counterpart optical fiber is exposed toward the optical fiber 14 of the ferrule 7. An optical fiber core alignment unit 10 is formed between the two. As shown in FIG.1 (c), the exposure length of the optical fiber 14 exposed from the ferrule 7 shall be 0.05 mm from the ferrule tip, for example. That is, the optical fiber 14 has a shape slightly protruding from the ferrule tip.

  Prior to forming such a shape, a plug 2 (or cap) for alignment is inserted into a portion where the second optical connector is inserted, as shown in FIG. The plug 2 has fork-like projections 61, 62, 63 having a trident on the tip, and are inserted into holes 61A, 62A, 63A provided in the first optical connector 1, respectively.

  The central protrusion 62 is inserted until it contacts the tip of the ferrule 7, and the protrusions 61 and 63 do not reach the bottom of the holes 61A and 63A. Reference numerals 72 and 73 denote contact surfaces. A recess 64 is formed at the tip of the protrusion 62 as shown in FIG. 1C, and the optical fiber 14A can be accommodated. The other part of the plug 2 forms a cylindrical part 15, which is a cylindrical space part 65. The cylindrical space 65 may be solid.

  An optical fiber core fixing part 20 is formed in the optical fiber holding member 6 in the vicinity of the end cap 5.

  FIG. 2 shows details of the optical fiber core wire fixing part 20.

  As shown in FIG. 2A, the optical fiber holding member 6 is constituted by two divided optical fiber holding member parts 6A and 6B, and the optical fiber holding member parts 6A and 6B are pressing means (not shown). Is pressed and integrated by the center. The joint surfaces 6C and 6D are formed in a mountain shape and a valley shape, and are engaged with each other. An insertion hole 6E through which the optical fiber core wire passes is formed between the mountain portion and the valley portion located in the center portion, and the insertion hole 6E. The optical fiber core wire 11 is inserted into the inside.

  Cutout portions 6F and 6G are formed at the lower ends of the optical fiber holding member portions 6A and 6B, respectively, to form one groove 6H.

  The wedge 21 can be inserted into the groove 6H from the outside. FIG. 2B shows an enlarged view of the state in which the wedge 21 is inserted into the groove 6H. The wedge 21 is formed wider than the groove 6H. When the wedge 21 is inserted, the wedge 21 widens the groove 6H against the pressing force. At this time, the optical fiber holding member portions 6A and 6B are opened to the left and right, and the insertion hole 6E is enlarged accordingly. In such a state, the optical fiber core wire 11 is inserted into the insertion hole 6E.

  When fixing the optical fiber core wire 11 through the insertion hole 6E, the wedge 21 is pulled out as shown in FIG. Thereby, the optical fiber core wire 11 is fixed by the insertion hole 6E, and the optical fiber core wire fixing portion 20 is formed.

  After forming such a state, the tips of the optical fiber strands 14 and 18 facing each other are brought into contact with each other, and the optical fiber core wire 11 is bent using the protruding portion. Hereinafter, a method for bending the optical fiber core wire 11 will be described.

  3, the housing 3 and the optical fiber holding member 6 are formed with an optical fiber core bending space forming member 30 (FIG. 3A). As shown in FIG. 3 (b), a deflection space that allows the deflection of the optical fiber core wire is formed between the optical fiber core wire fixing portion 20 and the ferrule 7. This section is called a flex space.

  FIG. 4 is a sectional view showing details of the bending space forming member 30 of the optical fiber core wire. 4A shows a state in which the deflection suppressing space 52 (FIG. 5) of the optical fiber core 11 is formed, and FIG. 4B shows the deflection space 53 of the optical fiber core 11 (FIG. 5). The formed state is shown. In FIG. 4, the housing 3 is provided with a joint holding portion 31 on the outer side thereof, and the optical fiber holding member 6 is accommodated in the internal space portion 32 inside thereof so that the inside of the space portion 32 can be slightly slid. It is formed. The internal space portion 32 and the optical fiber holding member 6 are formed in a substantially square cross section, and an engaging portion 33 is formed on the right side in the drawing.

  A groove 34 is formed at the lower end of the housing 3 in a direction crossing the optical fiber core 11 (perpendicular to the longitudinal direction of the optical fiber core in the figure), and the housing 3 and the groove 3 are communicated with the groove 34. A slide member accommodation hole 35 is formed in the optical fiber holding member 6 in the vertical direction. In the case of this example, the slide member accommodation hole 35 reaches the upper end of the optical fiber holding member 6 and is formed to penetrate therethrough. The slide member accommodation hole 35 is formed with a wide portion 36 at the top and a narrow portion 37 at the bottom, and a step is formed between them. At the stepped portion or in the vicinity of the stepped portion (stepped portion in the figure), a V-groove portion 38 is formed at the end of the wide portion 36 so as to face the slide member accommodation hole 35.

  FIG. 5 shows details of the V-groove 38 shown in FIG. In the case of this example, the V-groove portion 38 has a trapezoidal cross section, but is functionally for holding the optical fiber core wire (11). Here, the V-groove portion including a trapezoidal cross section is also referred to.

  The slide member accommodation hole 35 accommodates a slide member 41 that can slide (slide) in the hole direction.

  In the case of this example, as shown in FIG. 6, the slide portion 41 has an inverted L shape, and this slide member 41 is formed by a vertical portion 42 and a horizontal portion 43, and the vertical portion 42 slides inside, The portion 43 abuts on the upper surface of the groove portion 34. The vertical part 42 is formed with a wide part 44 at the upper part and a narrow part 45 at the lower part. A recess 44A is provided in the center.

  In FIG. 4, a wide surface 47 that forms the wide portion 36 of the slide member storage hole 35 is formed by extending the lower (one) inclined surface 46 that forms the V groove portion 38. A wide surface 48 that forms the wide portion 44 of the slide member 41 can be engaged with the wide surface 47.

  A hook 49 is provided at the upper end of the slide member storage hole 35 so as to contact the slide member 41, and the hook 49 acts so that the slide member 41 contacts the wide surface 48. As described above, the flexible space forming member 30 of the optical fiber core wire is formed.

  In the state shown in FIGS. 4A and 5A, the slide member 41 is held with the wide surface 48 in contact with the wide surface 47, and the wide portion 44 faces the V groove 38 on the slide member 41. The upper end (left side open end in the figure) 51 of the groove portion 38 is closed.

  In this way, the optical fiber core bending-defining space 52 is formed by closing the upper end 51 of the V-groove 38 by the V-groove 38 and the wide portion 44. In this state, the optical fiber core 11 housed in the V-groove portion 38 is engaged with the V-groove portion 38 and the force (displacement) to be bent is suppressed, and is inserted into the V-groove portion 38 from the insertion hole 12. The optical fiber core wire 11 is restrained from being bent and can be inserted straight toward the ferrule 7.

  Next, the optical fiber core wire 11 is inserted through the deflection suppressing space 52, and the optical fiber core wire is aligned between the ferrule 7 and the plug 2. The protrusion 62 of the plug 2 has a recess 64 formed in the flat portion at the tip. In such a shape, the optical fiber 14 is accommodated in the recess 64 of the counterpart plug 2. The concave shape of the concave portion 64 is such that the optical fiber 14 is accommodated and does not contact the tip of the optical fiber 14. When the ferrule 7 that houses the optical fiber 14 comes into contact with the mating plug 2, the wedge 21 fixes the optical fiber core 11 to the optical fiber holding member 6 as shown in FIG. . In this state, in FIGS. 4B and 5B, when the slide member 41 is pushed upward and the lateral portion 43 is brought into contact with and fixed to the upper surface of the groove portion 34, the slide member 41 slides. The narrow part 45 of the slide member 41 faces the upper end 51 of the V groove part 38. At this time, because of the narrow width, the narrow portion 45, that is, the slide member 41 is opened above the V groove portion 38. In this way, the V groove portion 38 and the narrow width portion 45 form a deflection space portion of the optical fiber core wire 11, that is, a deflection allowable space portion. The amount of deflection can be adjusted by adjusting the narrow width of the narrow width portion 45. Thus, when the slide member 41 slides and the narrow portion 45 of the slide member 41 is positioned at the upper end of the V-groove portion 38, that is, the wide portion 44 formed by the movement of the wide portion 44 of the slide member 41. When 48 is positioned on the surface of the wide width portion 36 of the slide storage hole 35, the deflection space portion 53 is formed, and the suppression state of the optical fiber core wire 11 by the suppression space portion 52 is released. The bent optical fiber 11 is bent and stored in the bent space 53.

  Thus, after fixing to the optical fiber holding member 6 with the wedge 21 with respect to the optical fiber core wire 11 and forming the flexible space portion 53, as shown in FIGS. 7 (a) and 7 (b), The plug 2 is discharged from the optical connector 1, and the ferrule 71 of the second optical connector that is the counterpart (the ferrule of the connection counterpart) is inserted, and the optical fiber strand 72 is brought into contact with the optical fiber strand 14. The optical fiber 14 is pushed back outward in the longitudinal direction (hole direction) of the insertion hole, and moves outward until the tips of the ferrule 7 and the ferrule 71 come into contact with each other. Since the deflection of the optical fiber 14 is suppressed by the protective material 61 in the ferrule 7, the outward movement is a deflection formed by bending in the deflection space portion 53 of the optical fiber core wire 11. Absorbed. FIG. 7A shows a state where the optical fiber core wire 11 is bent in the bending space.

  In this way, the portion of the optical fiber strand 14 in which the deflection of the optical fiber core wire 11 passes through the ferrule 7 of the first connector 1 slightly protrudes from the end face of the insertion destination is the ferrule 7 of the first connector 1. And the end face of the ferrule 71 of the mating second connector are pushed back in the inner direction of the ferrule 7 of the first connector 1.

  The optical fiber 14 is pressed toward the other optical fiber by the buckling load due to this deflection of the optical fiber 11, that is, the elastic force to return to the original, and the joining of the two optical fibers is constant. It will always be done well under the pressure of.

  In this way, after the optical fiber core wire 11 is fixed to the optical fiber holding member 6 by the fixing means such as the wedge 21 and the deflection suppression space portion 52 is expanded to newly form the deflection space portion 53. Then, the optical fiber core 14 is deflected inward by the protruding length of the optical fiber 14 through the optical fiber holding member 6 to form a deflection in the optical fiber core wire 11, and between the optical fiber strands. A contact pressure can be formed.

  As described above, the optical fiber core wire to be inserted is arranged inside the optical fiber holding member, and the deflection of the optical fiber core wire of the optical fiber strand through which the ferrule of the first connector is inserted, A portion that protrudes slightly from the end face of the insertion destination is formed by being pushed back toward the inside of the ferrule of the first connector by contact between the end faces of the ferrule of the first connector and the ferrule of the second connector. The deflection of the optical fiber core wire formed by being pushed back is accommodated in the deflection space portion and positioned using a jig, and the two optical fiber strands are brought into contact with each other by this deflection. The core wire is joined.

  FIG. 8 is a flowchart showing a method of forming a bent portion in the optical fiber core wire by assembling the connector.

  In FIG. 8, the optical fiber core wire is inserted into the first connector portion of the connector. At this time, the tip of the ferrule core is abutted against a plug that is fixedly arranged in the connector while suppressing the deflection (S1). And when an optical fiber strand is inserted in a ferrule, the protrusion part of the shape which protruded slightly protruding the optical fiber strand from the ferrule end is formed (S2).

  The optical fiber core coating is gripped and fixed by the optical fiber core fixing part (the S3 end cap is removed from the connector (S6), the second connector part to be mated is inserted into the connector (S7), and the suppression is released. Then, a bending space is formed, and the protrusion of the optical fiber that protrudes from the ferrule end is pushed inward (S8), and the bending of the optical fiber is generated in the fiber bending space by this pushing (S9). The contact force between the optical fiber strands is secured by the deflection of the core wire (S10).

  FIG. 9 is a diagram showing a second embodiment. FIG. 9A shows a predetermined state, FIG. 9B shows an operation state, FIG. 9A corresponds to FIG. 1B of the first embodiment, and FIG. Corresponds to FIG.

  FIG. 9 shows a configuration and behavior of a flexure space forming member for forming a flexure space portion of the optical fiber core, and the same configurations as those in the first embodiment are denoted by the same reference numerals. The explanation of the first embodiment is used for the explanation of.

  In the first embodiment, a step is formed in the optical fiber holding member by a wide portion and a narrow portion, a slide member storage hole is formed in the narrow portion, and a V-groove portion is formed facing the slide member storage hole. The member housing hole was slidable in the hole direction, accommodated with a slide member formed with a wide portion and a narrow portion, and provided with a deflection space portion forming member 30 for the optical fiber core wire. In the second embodiment shown in FIG. 9, a flexible space forming member 30 movable in the vertical direction in FIG. 9 is provided instead of the slide-type flexible space forming member 20. The configuration of the optical fiber core fixing portion 20 may be the same as that shown in FIG. 2, and the optical fiber core wire 11 is fixed by providing a fixing member 86 for the optical fiber holding member 6. Although one optical fiber core wire 11 is described in FIG. 9, it can be applied to a plurality of optical fiber core wires aligned in the same manner as in the first embodiment.

  In the example shown in FIG. 9, the optical fiber holding member 6 has a restraining surface that becomes the deflection restraining portion 81 of the optical fiber core wire 11 and is formed so as to be movable in the optical fiber holding member 6. A bending space forming member 30 having a bending space forming portion 80 of the fiber core wire is provided. In the example shown in FIG. 9, the flexure space portion forming portion 80 includes a handle 82 extending to the right hand.

  The bending space member 20 can be moved in the direction perpendicular to the longitudinal direction or perpendicular to the longitudinal direction, that is, the deflection direction, with respect to the longitudinal direction of the optical fiber core wire 11 by the handle 82. In the example shown in FIG. 9A, it is moved in the vertical direction.

  Under such a configuration, when the deflection space forming member 30 shown in FIG. 9A is installed at a predetermined fixed position and the optical fiber core 11 is inserted and operated A, the optical fiber core 11 is Deflection is suppressed by the deflection suppressing portion 81 at the time of insertion, and the insertion is smoothly performed and stored in the insertion portion.

  In this way, as in the first embodiment, the portion of the optical fiber core wire 11 that is bent through the ferrule of the first connector slightly protrudes from the end face of the insertion destination, as in the first embodiment. Formed by pushing back in the inner direction of the ferrule of the first connector by contact (contact) of the end faces of the ferrule of the first connector and the ferrule of the second connector (operation C). The two optical fiber strands 14 are connected by the deflection of the optical fiber core wire formed by the above. In this case, when the deflection space portion forming member 30 provided in the optical fiber holding member 6 is moved upward in the drawing using the handle 82, that is, in the deflection direction (operation B), the deflection suppression portion 82 suppresses the suppression state. The state is released, and a bending space 83 of the optical fiber core wire 11 is formed as shown in FIG. 9B, and the optical fiber core wire 11 is allowed to be bent in this space portion 83. In this way, the deflection space 83 is easily formed when deflection is required. The handle 82 used for the movement is connected to the flexible space forming portion 80 via the joint portion 84 having a spring function, and is fixed by being hooked on a part of the optical fiber holding member 6. can do. The operation is performed in the order of A → B → C.

  FIG. 10 is a diagram showing a third embodiment. 10 (a) shows a predetermined state, FIG. 10 (b) shows an XX cross section of FIG. 10 (a) at the time of predetermined rotation with the optical fiber core wire inserted, and FIG. 10 (c) shows the occurrence of deflection. The state of operation in the rotation position (rotation angle) at the time is shown. The configuration and function shown in FIG. 9 are basically the same, but in the example shown in FIG. 9, the flexible space forming member 30 is moved in a direction perpendicular to the longitudinal direction of the optical fiber core wire 11. However, in the example shown in FIG. 10, the flexible space forming member 30 is rotatable with respect to the longitudinal direction of the optical fiber core wire 11.

  As shown in FIG. 10B, when the optical fiber core wire is inserted (operation A), the optical fiber core wire 11 is held by the groove 85 provided on the upper surface of the deflection space portion 80 and the optical fiber holding. Insertion is smoothly performed in a state where the deflection is suppressed by the upper inner surface 6A of the member 6.

  As shown in FIG. 9 (c), when an operation (operation B) is performed to rotate the deflection space forming member 30 when the deflection of the optical fiber core wire 11 occurs, an operation with the side inner surface 6 B of the optical fiber holding member 6 is performed. A deflection space 83 is formed therebetween.

  In this way, when the deflection space forming member 30 provided in the optical fiber holding member 6 is rotated by a rotating means (not shown) (operation B), the deflection suppressing portion 82 formed by the groove 85 and the inner surface 6A. As shown in FIG. 10C, the bending space 83 of the optical fiber core wire 11 is formed and the optical fiber core wire 11 is allowed to be bent. Thus, the deflection space 83 is formed when deflection is required.

  DESCRIPTION OF SYMBOLS 1 ... 1st optical connector, 2 ... Plug, 3 ... Housing, 4 ... Space part, 5 ... End cap, 6 ... Optical fiber holding member, 7 ... Ferrule, 10 ... Optical fiber core wire empty position alignment part, 11 DESCRIPTION OF SYMBOLS ... Optical fiber core wire, 13 ... Insertion hole, 14 ... Optical fiber strand, 17 ... Optical fiber strand, 20 ... Optical fiber core wire fixing part, 21 ... Wedge, 22 ... Wedge insertion hole, 30 ... Optical fiber core wire Deflection space portion forming member, 35 ... slide member accommodation hole, 36 ... wide portion, 37 ... narrow portion, 38 ... V groove portion, 41 ... slide member, 44 ... wide portion, 45 ... narrow portion, 49 ... hook, 51: upper end (open end) of V-groove part, 52: deflection suppressing space part, 53: deflection space part (deflection allowable space part), 71: counterpart ferrule, 72: counterpart optical fiber strand

Claims (8)

A first optical connector having an optical fiber, and holding an optical fiber that covers the optical fiber; and a counterpart optical fiber that is in contact with the optical fiber; An optical fiber holding member that is configured by a second optical connector that holds an optical fiber core wire that covers the fiber strand, the first optical connector being housed in a space formed inside the housing. The optical fiber core wire is formed so as to pass through an insertion hole formed in the optical fiber holding member, and the optical fiber core wire to be inserted is disposed in the optical fiber holding member. In an optical connector adapted to
The portion of the optical fiber strand in which the deflection of the optical fiber core wire passes through the ferrule of the first connector is slightly protruded from the end surface of the insertion destination, and the end surface of the ferrule of the first connector and the ferrule of the second connector It is formed by being pushed back in the inner direction of the ferrule of the first connector by the contact between each other, and the optical fiber strands are connected by the deflection of the optical fiber core formed by the pushing back. And
The optical fiber holding member includes an optical fiber core wire deflection suppressing portion, and is formed to be movable in the optical fiber holding member. An optical connector characterized in that the portion forming member releases the deflection suppressing state of the deflection suppressing portion and moves the optical fiber core wire to form a deflection space portion of the optical fiber core wire.   2. The deflection space portion forming member according to claim 1, wherein the deflection space portion forming member is moved in the optical fiber holding member in a deflection direction with respect to a longitudinal direction of the optical fiber core wire, and is a deflection suppression portion of the optical fiber core wire at a predetermined fixed position. An optical connector characterized in that a flexible space of an optical fiber core wire is formed by being suppressed and moved at a moving position.   In Claim 1, the said bending | flexion space part formation part is rotationally moved within the said optical fiber holding member with respect to the longitudinal direction of an optical fiber core wire, and the deflection | deviation of an optical fiber core wire is a bending | flexion suppression part in a predetermined rotation position. An optical connector characterized in that a flexible space portion of an optical fiber core wire is formed by being suppressed and rotated at a rotational position. A first optical connector having an optical fiber, and holding an optical fiber that covers the optical fiber; and a counterpart optical fiber that is in contact with the optical fiber; In an optical connector composed of a second optical connector that holds an optical fiber core that covers the fiber,
The first optical connector is formed from a housing and an optical fiber holding member housed in a space formed inside the housing,
A step is formed in the optical fiber holding member by a wide portion and a narrow portion, and a slide member storage hole and a V-groove portion are formed facing the slide member storage hole in the narrow portion,
The slide member storage hole is slidable in the hole direction, and a slide member formed with a wide portion and a narrow portion is stored therein.
When the slide member slides and the wide portion of the slide member faces the V-groove portion, the upper end of the V-groove portion is closed and the V-groove portion and the wide portion form a deflection suppressing space portion of the optical fiber core wire. When the slide member slides and the narrow part of the slide member faces the V-groove part, the upper part of the V-groove part is opened and the flex space of the optical fiber core wire is formed by the V-groove part and the narrow part. Forming an optical connector.   5. The wide surface according to claim 4, wherein a wide surface that forms the wide portion of the slide receiving hole is formed by extending one inclined surface that forms the V-groove, and the wide portion of the slide member is formed on the wide surface. The optical connector is characterized in that, when engaged, the deflection suppressing space is formed.   6. The optical connector according to claim 5, wherein the flexible space is formed when the slide member slides and a narrow width portion of the slide member is positioned at an upper end of the V-groove portion.   In any one of Claims 4-6, when the optical fiber strand which penetrates the ferrule of a 1st connector is penetrated, it is set as the arrangement | positioning protruded slightly from the end surface of the penetration destination of this ferrule. And optical connector. A first optical connector having an optical fiber, and holding an optical fiber that covers the optical fiber; and a counterpart optical fiber that is in contact with the optical fiber; An optical fiber holding member that is configured by a second optical connector that holds an optical fiber core wire that covers the fiber strand, the first optical connector being housed in a space formed inside the housing. The optical fiber core wire is formed so as to pass through an insertion hole formed in the optical fiber holding member, and the optical fiber core wire to be inserted is disposed in the optical fiber holding member. In a method for joining optical fiber cores using an optical connector adapted to,
The part of the optical fiber strand that is inserted through the ferrule of the first connector and the end of the ferrule of the first connector and the end face of the ferrule of the second connector are slightly protruding from the end face of the insertion destination. It is formed by being pushed back in the inner direction of the ferrule of the first connector by contact between each other, and the deflection of the optical fiber core wire formed by this pushing back is accommodated in the deflection space and positioned. The optical fiber strands are brought into contact with each other by the positioned deflection,
An optical fiber core having an insertion portion for an optical fiber core wire in the holding portion and being movably formed in the holding member while suppressing the optical fiber core wire by a bending space portion forming member of the optical fiber core wire. When the optical fiber core wires are brought into contact with each other and the optical fiber core wires are brought into contact with each other, the optical fiber core is released by releasing the restrained state stored in the insertion portion in which the formed deflection space portion is formed. A method of joining optical fiber cores using an optical connector, characterized by accommodating the deflection of the wire.

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