WO2011052352A1 - 光コネクタ - Google Patents
光コネクタ Download PDFInfo
- Publication number
- WO2011052352A1 WO2011052352A1 PCT/JP2010/067520 JP2010067520W WO2011052352A1 WO 2011052352 A1 WO2011052352 A1 WO 2011052352A1 JP 2010067520 W JP2010067520 W JP 2010067520W WO 2011052352 A1 WO2011052352 A1 WO 2011052352A1
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- WO
- WIPO (PCT)
- Prior art keywords
- housing
- ferrule
- optical
- fiber
- jacket
- Prior art date
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3846—Details of mounting fibres in ferrules; Assembly methods; Manufacture with fibre stubs
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3887—Anchoring optical cables to connector housings, e.g. strain relief features
- G02B6/38875—Protection from bending or twisting
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3887—Anchoring optical cables to connector housings, e.g. strain relief features
- G02B6/3888—Protection from over-extension or over-compression
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3801—Permanent connections, i.e. wherein fibres are kept aligned by mechanical means
- G02B6/3806—Semi-permanent connections, i.e. wherein the mechanical means keeping the fibres aligned allow for removal of the fibres
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3851—Ferrules having keying or coding means
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3898—Tools, e.g. handheld; Tuning wrenches; Jigs used with connectors, e.g. for extracting, removing or inserting in a panel, for engaging or coupling connectors, for assembling or disassembling components within the connector, for applying clips to hold two connectors together or for crimping
Definitions
- the present invention relates to an optical connector to which an optical cord having a jacket and a tensile fiber is assembled.
- the optical connector described in Patent Document 1 includes a connector ferrule to which a short optical fiber is attached, a plug frame that accommodates the connector ferrule, and a protective sleeve that covers a fusion spliced portion between the short optical fiber and the optical fiber of the optical cord. And a rear housing that engages with the plug frame and covers the protective sleeve, and a boot that is fitted to a rear end portion of the rear housing and protects the optical cord.
- the outer cover of the optical cord and the tensile strength fiber (Kevlar) are fixed to the rear end of the rear housing by crimping.
- An optical connector is an optical connector having a fiber connection portion that connects a built-in fiber held by a ferrule portion and an optical fiber exposed by removing an outer sheath of an optical cord, A first housing that accommodates the optical fiber and the fiber connecting portion; a second housing that is disposed on the rear side of the first housing; A pressing member and a fixing member that is mounted on the second housing so as to accommodate the outer cover pressing member and that fixes the tensile strength fiber built in the optical cord to the second housing together with the outer cover.
- the space which accommodates a fiber connection part may be defined by the 1st housing part and the 2nd housing part.
- the jacket is attached to the second housing by the jacket pressing member.
- the outer cover holding member is attached to the second housing so as to hold it down.
- the outer member of the optical cord and the tensile strength fiber are fixed to the second housing by attaching the fixing member to the second housing so as to accommodate the outer cover pressing member. Therefore, the outer cover of the optical cord and the tensile strength fiber can be fixed to the second housing without employing a caulking method that requires a caulking tool.
- the second housing includes a first tubular portion and a second tubular portion provided on the rear side of the first tubular portion and having an outer diameter smaller than that of the first tubular portion.
- the outer cover holding member may include an annular portion fitted into the second cylindrical portion, and an outer sheath that is provided to extend to the rear of the annular portion and is torn into two branches.
- the fixing member may have a pair of pressing arms that press against the second cylindrical portion, and the fixing member is fitted to the first cylindrical portion, and the tensile strength fiber is sandwiched and fixed to the first cylindrical portion.
- the annular portion can be fitted to the second tubular portion such that the second tubular portion is located in the inner hole of the annular portion.
- the presser arm can press the outer skin against the outer peripheral surface of the second annular portion.
- the fixing member is attached to the outer peripheral surface of the first cylindrical portion, and the tensile strength fiber fixing portion can sandwich the tensile strength fiber between the tensile strength fiber fixing portion and the first cylindrical portion.
- the jacket fixing part presses the pressing arm against the outer peripheral surface of the second cylindrical part, and thereby the outer skin can be sandwiched between the outer shell fixing part and the second cylindrical part via the pressing arm.
- the outer sheath of the optical cord and the tensile strength fiber are fixed to the second housing, the outer sheath of the optical cord is first torn into two branches. Then, by fitting the annular part of the outer cover holding member with the second cylindrical part of the second housing, the outer cover in a state of being torn into two branches is made into the second cylindrical part by a pair of pressing arms. Hold against. In this state, the tensile strength fiber fixing portion of the fixing member is fitted into the first cylindrical portion of the second housing, so that the tensile strength fiber of the optical cord is interposed between the tensile strength fiber fixing portion and the first cylindrical portion.
- the outer cover that is torn into two forks is sandwiched and fixed between the outer cover fixing part of the fixing member and the second cylindrical part via the pressing arm. Therefore, the outer cover of the optical cord and the tensile fiber can be fixed to the second housing easily and reliably.
- the jacket fixing part may have a tapered region that tapers with respect to the rear side of the fixing member.
- each pressing arm of the outer cover pressing member follows the taper region of the outer cover fixing portion of the fixing member. It comes to bend to the 2nd cylindrical part side. Thereby, the outer jacket in a state of being torn into two forks can be firmly fixed to the second cylindrical portion.
- the front end portion of the second housing may be provided with support protrusions that support a plurality of springs that bias the ferrule portion forward.
- the spring that urges the ferrule part is very small. For this reason, it is difficult for an operator to hold the spring at the fingertip, and the spring may be dropped during the work. Since the spring is easy to roll, it may be difficult to find the spring if it falls. Therefore, by supporting the spring on the support protrusion provided at the front end of the second housing, it is possible to prevent the operator from accidentally dropping the spring when the optical connector is assembled.
- the ferrule part may have a flange part having an asymmetric shape with respect to the top and bottom, and the ferrule housing space for housing the ferrule part in the first housing has a shape corresponding to the flange part. You may have.
- the top and bottom directions of the ferrule part with respect to the first housing are important in order to connect the front end surfaces of the ferrule part to each other and connect the connectors. Therefore, by making the shape of the flange portion of the ferrule portion asymmetric with respect to the top and bottom and making the shape of the ferrule housing space of the first housing a shape corresponding to the flange portion, the ferrule portion with respect to the first housing is assembled during the assembly of the optical connector The vertical direction of the can be easily adjusted.
- the outer jacket of the optical cord and the tensile strength fiber can be fixed to the housing without using an extra tool. As a result, it is possible to save labor for the operator to prepare caulking tools and bring them to the site.
- FIG. 1 is a perspective view showing an embodiment of an optical connector according to the present invention. It is a disassembled perspective view of the optical connector shown to (a) of FIG. It is sectional drawing of the optical connector shown to (a) of FIG.
- FIG. 3 is a cross-sectional view showing a state where the ferrule member shown in FIG. 2 is accommodated in a plug housing. It is a disassembled perspective view of the rear housing with a spring shown in FIG. 1, an outer sheath holding member, and a fixing member. It is a front view of the rear housing with a spring shown in FIG. It is the VII-VII sectional view taken on the line of FIG.
- FIG. 1 It is sectional drawing which shows a mode that the jacket and tensile strength fiber of an optical cord are fixed by the jacket holding member and fixing member shown in FIG. It is a figure which shows the assembly procedure of the optical connector shown to (a) of FIG. It is a figure which shows the assembly procedure of the optical connector shown to (a) of FIG. It is a figure which shows the assembly procedure of the optical connector shown to (a) of FIG. It is a figure which shows the assembly procedure of the optical connector shown to (a) of FIG. It is a figure which shows the assembly procedure of the optical connector shown to (a) of FIG. It is a figure which shows the assembly procedure of the optical connector shown to (a) of FIG. It is a perspective view which shows other embodiment of the optical connector concerning this invention.
- FIG. 16 is an exploded perspective view of the optical connector shown in FIG. It is sectional drawing of the optical connector shown to (a) of FIG. It is a figure which shows the assembly procedure of the optical connector shown to (a) of FIG. It is a disassembled perspective view which shows other embodiment of the optical connector concerning this invention.
- FIG. 20 is a perspective view showing a procedure for fixing the outer jacket of the optical cord and the tensile strength fiber to the rear housing shown in FIG. 19.
- FIG. 20 is a perspective view showing a procedure for fixing the outer jacket of the optical cord and the tensile strength fiber to the rear housing shown in FIG. 19.
- FIG. 20 is a perspective view showing a procedure for fixing the outer jacket of the optical cord and the tensile strength fiber to the rear housing shown in FIG. 19.
- FIG. 20 is a perspective view showing a procedure for fixing the outer jacket of the optical cord and the tensile strength fiber to the rear housing shown in FIG. 19.
- FIG. 20 is a perspective view showing a procedure for fixing the outer jacket of the optical cord and the tensile strength fiber to the rear housing shown in FIG. 19.
- FIG. 1 is a perspective view showing an embodiment of an optical connector according to the present invention.
- FIG. 1 (a) shows the optical connector with the dust cap attached
- FIG. 1 (b) shows the optical connector with the dust cap removed.
- 2 is an exploded perspective view of the optical connector shown in FIG. 1A
- FIG. 3 is a cross-sectional view of the optical connector shown in FIG.
- the term “rear” is used as a term indicating a direction in which the rear housing, that is, the second housing is located with respect to the plug housing, that is, the first housing.
- the vertical direction is used as a term indicating a predetermined direction orthogonal to the front-rear direction.
- the optical connector 1 is a fusion spliced LC connector in which an optical cord 2 is assembled.
- the optical cord 2 includes an optical fiber core wire 3, an outer sheath 4 covering the optical fiber core wire 3, and an ultrafine-diameter tensile fiber (Kevlar) interposed between the optical fiber core wire 3 and the outer sheath 4. 5.
- the tensile strength fibers 5 are built in the optical cord 2 in a bundled state (see FIG. 9).
- the optical connector 1 includes a ferrule member 6, a plug housing 7 that accommodates the ferrule member 6, a rear housing 8 that is disposed on the rear side of the plug housing 7 and connected to the plug housing 7, and the rear housing 8. And a fixing member 10 and a boot 11 attached to the fixing member 10.
- the ferrule member 6 includes a ferrule body 13 that holds a short built-in fiber 12 and a flange portion 14 that is fixed to the ferrule body 13.
- the front end surface (front end surface) of the ferrule body 13 is polished at a predetermined angle (for example, 8 degrees).
- the built-in fiber 12 extends backward from the ferrule member 6 by a predetermined length.
- One end of the built-in fiber 12, that is, the rear end, is fused and connected to the tip end of the optical fiber core wire 3 exposed by removing the outer sheath 4 from the tip portion of the optical cord 2.
- the fusion splicing portion S between the built-in fiber 12 and the optical fiber core wire 3 is protected by a fusion protection sleeve 15.
- the flange portion 14 has a substantially rectangular shape as shown in FIG.
- a cut-off surface 14 a that is cut off in a planar shape or a curved surface is formed at either of the two upper and lower corners of the flange portion 14. Therefore, the shape of the flange portion 14 is asymmetric in the vertical direction.
- a dust cap 16 for protecting the ferrule body 13 from dust, dust, etc. is placed on the ferrule body 13 (FIG. )reference).
- the dust cap 16 has a substantially cylindrical shape.
- the plug housing 7 is formed with an insertion hole 17 extending in the front-rear direction.
- the ferrule member 6 is accommodated in the plug housing 7 from the rear side of the plug housing 7.
- a wall portion 7 a for receiving the flange portion 14 of the ferrule member 6 is provided on the inner wall surface of the front portion of the plug housing 7.
- a region from the rear end of the plug housing 7 to the wall portion 7 a in the insertion hole 17 forms a ferrule housing space 17 a for housing the ferrule member 6.
- the diameter of the insertion hole 17 in the front portion of the plug housing 7 (region corresponding to the wall portion 7a) is slightly larger than the outer diameter of the dust cap 16.
- the dimension of the ferrule housing space 17 a is larger than the diameter of the insertion hole 17 in the front portion of the plug housing 7. Thereby, the dust cap 16 can pass through the entire insertion hole 17.
- the shape of the cross section perpendicular to the front-rear direction of the ferrule housing space 17a is a substantially rectangular shape corresponding to the shape of the flange portion 14 of the ferrule member 6, as shown in FIG. That is, two inclined surfaces 7 b corresponding to the cut-off surface 14 a of the flange portion 14 are provided at the corners of the upper portion of the inner wall of the plug housing 7 that forms the ferrule housing space 17 a.
- the rear housing 8 is connected to the rear end of the plug housing 7 through a locking means.
- the rear housing 8 is formed with an insertion hole 8a extending in the front-rear direction. Inside the plug housing 7 and the rear housing 8, the above-mentioned fusion protection sleeve 15 is accommodated.
- four support protrusions 19 are provided at the front end of the rear housing 8 to support a spring 18 that biases the ferrule member 6 forward.
- the spring 18 is disposed in the ferrule housing space 17 a of the plug housing 7. By providing such a spring 18, it becomes possible to perform PC (Physical-Contact) connection with the counterpart optical connector.
- the support protrusions 19 protrude forward of the rear housing 8 and are provided at regular intervals in the circumferential direction. That is, the four support protrusions 19 can be provided at intervals around the central axis of the ferrule body 13 or the central axis of the built-in fiber 12. According to this configuration, for example, the spring 18 comes into contact with the inner wall surfaces of the two support protrusions 19 facing each other out of the four support protrusions 19, so that the spring 18 can easily and reliably contact the front end portion of the rear housing 8. Will be supported.
- the number of support protrusions 19 is not limited to four as long as the spring 18 is supported at a plurality of locations.
- the rear housing 8 has a large tubular portion 20 and a small tubular portion 21 provided on the rear side of the large tubular portion 20.
- the diameter of the small cylindrical portion 21 is smaller than the diameter of the large cylindrical portion 20.
- a male screw 22 is formed on the outer peripheral surface of the large cylindrical portion 20.
- a pair of guide rails 23 for guiding the jacket holding member 9 are formed on the outer peripheral surface of the small tubular portion 21 so as to extend in the front-rear direction.
- a pair of blade portions 24 for fixing the outer jacket 4 of the optical cord 2 is formed on the outer peripheral surface of the small tubular portion 21.
- Each sword portion 24 may include one or more convex portions. The blade portion 24 is formed at a portion between the pair of guide rails 23 on the outer peripheral surface of the small tubular portion 21.
- the outer housing pressing member 9 and the fixing member 10 are mounted on the rear housing 8 as described above.
- the jacket holding member 9 has an annular portion 25 fitted into the small tubular portion 21 and a pair of holding arms 26 that are integrated with the annular portion 25 and extend in the axial direction of the annular portion 25.
- the annular portion 25 can be fitted to the small tubular portion 21 such that the small tubular portion 21 is positioned in the inner hole of the annular portion 25.
- the front ends of the pair of pressing arms 26 may be connected to the annular portion 25, and the rear ends of the pair of pressing arms 26 may be free ends.
- a pair of protrusions 27 that are engaged with the guide rails 23 of the small tubular portion 21 are formed on the inner peripheral surface of the annular portion 25.
- the protrusions 27 are formed at portions between the pressing arms 26 on the inner peripheral surface of the annular portion 25.
- the fixing member 10 has a substantially cylindrical shape.
- the fixing member 10 is provided on the rear side of the tensile strength fiber 28 and the tensile strength fiber fixing portion 28 for fixing the tensile strength fiber 5 (see FIG. 9) of the optical cord 2 to the large tubular portion 20 of the rear housing 8.
- the outer cover 4 is fixed to the small tubular portion 21 of the rear housing 8 via the holding arms 26.
- a female screw 30 that is screwed with the male screw 22 of the large tubular portion 20 is formed.
- the tensile strength fiber fixing portion 28 can be attached to the outer peripheral surface of the large tubular portion 20.
- a predetermined clearance is provided between the male screw 22 and the female screw 30 so that the tensile strength fiber 5 can be sandwiched between the large cylindrical portion 20 and the tensile strength fiber fixing portion 28.
- the outer jacket fixing portion 29 has a tapered region 29 a that is tapered with respect to the rear side of the fixing member 10. Accordingly, the opening diameter of the rear end of the fixing member 10 is smaller than the opening diameter of the front end of the fixing member 10. Specifically, the opening diameter of the rear end of the fixing member 10 is smaller than the outer diameter of the outer cover holding member 9.
- the jacket pressing member 9 is fitted into the small tubular portion 21 so that each pressing arm 26 is located on the rear side with respect to the annular portion 25. That is, the jacket holding member 9 is fitted to the small tubular portion 21.
- the annular portion 25 is fitted to the small tubular portion 21 so that the protrusion 27 of the annular portion 25 follows the guide rail 23 of the small tubular portion 21.
- the tensile strength fiber fixing portion 28 is screwed. That is, the tensile strength fiber fixing portion 28 of the fixing member 10 is attached to or screwed to the large cylindrical portion 20. Thereby, although not shown, the tensile strength fiber 5 is sandwiched and fixed between the large tubular portion 20 and the tensile strength fiber fixing portion 28.
- the small cylindrical portion 21 of the rear housing 8 is covered with the outer cover fixing portion 29 of the fixing member 10. Since the jacket fixing portion 29 has a tapered region 29 a that tapers with respect to the rear side of the fixing member 10, each pressing arm 26 of the jacket pressing member 9 is pushed by the jacket fixing portion 29. It bends toward the small tubular portion 21 side. As a result, the bifurcated outer jacket 4 is sandwiched and fixed between the outer jacket fixing portion 29 and the small tubular portion 21 via the pressing arms 26.
- the boot 11 is mounted on the jacket fixing portion 29.
- the boot 11 protects the optical cord 2 from abrupt bending of the optical cord 2 behind the rear housing 8.
- a reinforcing tube 31 is attached to the boot 11 in advance.
- the procedure for assembling the optical connector 1 configured as described above will be described.
- the optical cord 2 is passed through the boot 11, to which the reinforcing tube 31 is attached, the fixing member 10, the outer cover holding member 9, and the rear housing 8 to which the spring 18 is attached.
- the outer sheath 4 at the tip of the optical cord 2 is removed to expose the optical fiber core wire 3 and the tensile strength fiber 5. Then, excess tensile strength fiber 5 is cut. Subsequently, as shown in FIG. 9C, the tip portion of the outer jacket 4 is torn into a bifurcated state. Then, as shown in FIG. 9D, the bifurcated outer jacket 4 and the tensile strength fiber 5 are folded back.
- the optical fiber core wire 3 is passed through the fusion protection sleeve 15.
- the core wire covering at the tip of the optical fiber core wire 3 is removed, the bare fiber 3a is exposed, and the bare fiber 3a is cleaned.
- the tip portion of the optical cord 2 is set in the fiber holder 32 for fusion.
- the tip of the bare fiber 3a is cut.
- the fusion fiber holder 32 is set in a fusion machine (not shown).
- a stringed dust cap 16A is prepared.
- the string-attached dust cap 16 ⁇ / b> A is obtained by attaching a string portion 16 a to the tip of the dust cap 16.
- the ferrule body 13 of the ferrule member 6 holding the built-in fiber 12 is covered with a stringed dust cap 16 ⁇ / b> A.
- the ferrule body 13 is shipped from the factory with the stringed dust cap 16A covered.
- the ferrule member 6 to which the stringed dust cap 16 ⁇ / b> A is attached is set in the ferrule holder 33.
- the ferrule holder 33 is set in a fusion machine (not shown).
- the tip of the built-in fiber 12 and the tip of the bare fiber 3a of the optical fiber core wire 3 are fused and connected by a fusion machine.
- the one set on the fusion fiber holder 32 and the ferrule holder 33 (intermediate product) is taken out from the fusion machine.
- the fusion protection sleeve 15 is moved to the position of the fusion splicing portion S between the built-in fiber 12 and the optical fiber core wire 3, and the fusion protection sleeve 15 is moved in that state. Shrink by heating. Thereby, the fusion protection sleeve 15 does not deviate from the position of the fusion splicing portion S.
- the outer covering 4 and the tensile strength fiber 5 in the folded state are returned to the original state.
- a plug housing 7 is prepared.
- the plug housing 7 is connected to the rear housing 8 through a stringed dust cap 16 ⁇ / b> A through the plug housing 7.
- the outer cover holding member 9 is fitted into the small tubular portion 21 with the bifurcated outer cover 4 placed on the small tubular portion 21 of the rear housing 8. (Details are described above). That is, the outer cover holding member 9 is fitted to the small tubular portion 21.
- the fixing member 10 is screwed into the large tubular portion 20 to be mounted (details are described above). ). That is, the fixing member 10 is attached to or screwed to the large cylindrical portion 20. As a result, the outer jacket 4 and the tensile strength fiber 5 are fixed to the rear housing 8.
- the boot 11 with the reinforcing tube 31 is attached to the jacket fixing portion 29 of the fixing member 10.
- the string part 16a of the dust cap 16A with a string is cut with a finger
- the optical connector 1 as shown to Fig.1 (a) is completed by the above.
- the fixing member 10 is fixed to the rear housing in a state where the outer cover 4 of the optical cord 2 is pressed against the small tubular portion 21 of the rear housing 8 by the outer cover holding member 9. 8 by screwing into the large cylindrical portion 20, that is, by attaching or screwing the fixing member 10 to the large cylindrical portion 20, the outer member 4 and the tensile fiber 5 of the optical cord 2 are attached to the rear housing 8 by the fixing member 10. Since they are sandwiched and fixed, the jacket 4 and the tensile strength fiber 5 can be easily fixed to the rear housing 8 without mechanically crimping the caulking ring.
- the caulking tool is not required, when the assembly of the optical connector 1 is performed at a site other than the factory, the operator does not have to take the caulking tool to the site. Thereby, since it is not necessary to pay more attention than necessary so that the operator does not forget the caulking tool, the burden on the operator can be reduced.
- each pressing arm 26 of the jacket pressing member 9 follows the taper region 29a and bends toward the large cylindrical portion 20 when screwed, the jacket 4 is fixed to the rear housing 9 sufficiently strongly. Can do.
- the operator since the spring 18 is held by the support protrusion 19 provided at the front end of the rear housing 8, the operator does not accidentally drop the spring 18 during the assembly work of the optical connector 1. Therefore, the labor of searching for the spring 18 dropped by the operator can be avoided.
- FIG. 15 is a perspective view showing another embodiment of the optical connector according to the present invention.
- FIG. 15 (a) shows the optical connector with the dust cap attached
- FIG. 15 (b) shows the optical connector with the dust cap removed.
- 16 is an exploded perspective view of the optical connector shown in FIG. 15A
- FIG. 17 is a cross-sectional view of the optical connector shown in FIG.
- members that are the same as or equivalent to those in the above-described embodiment are given the same reference numerals. In the following description, the description of the same or equivalent members as those in the above embodiment is omitted.
- the optical connector 40 of the embodiment shown in FIGS. 15 to 17 is a fusion splicing type SC connector in which the optical cord 2 is assembled.
- the optical connector 40 includes a plug housing 41 and a rear housing 42 instead of the plug housing 7 and the rear housing 8 in the above embodiment.
- the internal structure of the plug housing 41 is substantially the same as the internal structure of the plug housing 7 described above.
- the rear housing 42 has four support protrusions 19 that support the spring 18, a large cylindrical portion 20, and a small cylindrical portion 21, as with the rear housing 8 described above.
- the internal structure of the rear housing 42 is substantially the same as the internal structure of the rear housing 8 described above.
- the optical connector 40 further includes a knob 43 that covers the plug housing 41 and the rear housing 42.
- the ferrule body 13 of the ferrule member 6 is covered with the stringed dust cap 16A, and the boot 11 to which the reinforcing tube 31 is attached, the fixing member. 10.
- the optical cord 2 is passed through the rear housing 42 to which the outer cover holding member 9 and the spring 18 are attached.
- the plug housing 41 is connected to the rear housing 42 through the plug housing 41 through the stringed dust cap 16A.
- the outer cover 4 and the tensile fiber 5 (not shown) of the optical cord 2 are attached to the rear housing 42 by the outer cover member 9 and the fixing member 10.
- the boot 11 is attached to the fixing member 10.
- the knob 43 is attached to the plug housing 41, the string portion 16a of the dust cap 16A with string is cut with a finger.
- the optical connector 40 as shown in FIG. 14A is completed.
- FIG. 19 is an exploded perspective view showing still another embodiment of the optical connector according to the present invention
- FIG. 20 is a cross-sectional view of the optical connector shown in FIG.
- the same reference numerals are given to the same or equivalent members as in the above embodiment. Moreover, in the following description, description of the same or equivalent member as in the above-described embodiment is omitted.
- the optical connector 50 of the embodiment shown in FIGS. 19 to 20 is a mechanical splice SC connector to which the optical cord 2 is assembled.
- the optical connector 50 includes a mechanical splice 51, a plug housing 52 that accommodates the mechanical splice 51, a rear housing 53 that is disposed on the rear side of the plug housing 52 and connected to the plug housing 52, and the plug housing 52.
- the knob 54 to cover, the said outer cover holding member 9, the fixing member 10, and the boot 11 are provided.
- the mechanical splice 51 includes a base portion and a pressing portion that can be opened and closed, and a U-shaped clamp spring that sandwiches both, although not shown.
- a ferrule portion 55 that holds the short built-in fiber 12 is integrally fixed to the front end of the base portion of the mechanical splice 51.
- the mechanical splice 51 mechanically connects the built-in fiber 12 held by the ferrule part 55 and the optical fiber core wire 3 exposed by removing the outer sheath 4 of the tip portion of the optical cord 2.
- the base portion and the pressing portion of the mechanical splice 51 can be opened by a wedge member 58 (see FIG. 21).
- a ferrule housing space 56 for housing the ferrule portion 55 is formed at the front end portion of the plug housing 52.
- the rear housing 53 has a large tubular portion 20 and a small tubular portion 21 in the same manner as the rear housing 42 described above. Between the mechanical splice 51 and the rear housing 53, a spring 57 that biases the ferrule portion 55 forward is disposed.
- the outer sheath 4 at the tip portion of the optical cord 2 is removed to expose the optical fiber core wire 3 and the tensile fiber 5. Then, the tip portion of the jacket 4 is torn into a bifurcated state. Then, the core wire covering of the tip portion of the optical fiber core 3 is removed, the bare fiber 3a is exposed to clean the bare fiber 3a, and then the tip portion of the bare fiber 3a is cut.
- the optical fiber core wire 3 is inserted into the mechanical splice 51 from the rear side of the rear housing 53 through the rear housing 53, and the optical fiber core wire 3 is butted and connected to the built-in fiber 12 held by the ferrule portion 55.
- the wedge portion of the wedge member 58 is removed from the mechanical splice 51.
- the mechanical splice 51 is closed and fixed to the mechanical splice 51 in a state where the optical fiber core wire 3 and the built-in fiber 12 are connected.
- the bifurcated outer jacket 4 is placed on the blade portion 24 of the small tubular portion 21 of the rear housing 53. Then, as shown in FIG. 23, the outer cover holding member 9 is fitted into the small tubular portion 21, that is, the outer cover holding member 9 is fitted to the small tubular portion 21, thereby The jacket 4 is temporarily fixed by the pressing member 9.
- the outer cover 4 and the tensile fiber 5 of the optical cord 2 are fixed to the rear housing 53 by the outer cover holding member 9 and the fixing member 10, so that the caulking ring is not mechanically pressure-bonded.
- the jacket 4 and the tensile strength fiber 5 can be easily fixed.
- the optical connector 50 of the present embodiment is a mechanical splice SC connector having a mechanical splice 51, but the LC connector described above may be a mechanical splice type.
- the present invention is not limited to the above embodiment.
- the male screw 22 is formed on the outer peripheral surface of the large cylindrical portion 20 of the rear housing 8, 42, 53
- the female screw 30 is formed on the inner peripheral surface of the tensile strength fiber fixing portion 28 of the fixing member 10.
- the mounting method of the fixing member 10 to the large cylindrical portion 20 of the rear housing 8, 42, 53 is not particularly limited to screwing.
- the flange part 14 of the ferrule member 6 shall exhibit the substantially rectangular shape by which the cut-off surface 14a was formed in two corner
- SYMBOLS 1 ... Optical connector, 2 ... Optical cord, 3 ... Optical fiber core wire, 4 ... Outer sheath, 5 ... Tensile fiber, 6 ... Ferrule member (ferrule part), 7 ... Plug housing (1st housing), 8 ... Rear housing (Second housing), 9 ... jacket holding member, 10 ... fixing member, 12 ... built-in fiber, 14 ... flange portion, 17a ... ferrule housing space, 18 ... spring, 19 ... support projection, 20 ... large cylindrical portion ( (First cylindrical part), 21 ... small cylindrical part (second cylindrical part), 25 ... annular part, 26 ... pressing arm, 28 ... tensile strength fiber fixing part, 29 ...
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
Description
Claims (5)
- フェルール部に保持された内蔵ファイバと光コードの外被を除去して露出された光ファイバとを接続するファイバ接続部を有する光コネクタにおいて、
前記フェルール部及び前記ファイバ接続部を収容する第1ハウジングと、
前記第1ハウジングの後側に配置された第2ハウジングと、
前記第2ハウジングに装着され、前記光コードの前記外被を前記第2ハウジングに対して押さえる外被押さえ部材と、
前記外被押さえ部材を収容するように前記第2ハウジングに装着され、前記光コードに内蔵された抗張力繊維を前記外被と共に前記第2ハウジングに固定する固定部材と、
を備えることを特徴とする光コネクタ。 - 前記第2ハウジングは、第1筒状部と、前記第1筒状部の後側に設けられ、前記第1筒状部よりも小さい外径をもった第2筒状部とを有し、
前記外被押さえ部材は、前記第2筒状部に嵌め込まれる環状部と、前記環状部の後方に延在するように設けられ、二股に引き裂さかれた状態の前記外被を前記第2筒状部に対して押さえる1対の押さえアームとを有し、
前記固定部材は、前記第1筒状部と嵌合し、前記抗張力繊維を前記第1筒状部に挟み込んで固定する抗張力繊維固定部と、前記抗張力繊維固定部の後側に設けられ、前記二股に引き裂かれた状態の外被を前記押さえアームを介して前記第2筒状部に挟み込んで固定する外被固定部とを有することを特徴とする請求項1記載の光コネクタ。 - 前記外被固定部は、前記固定部材の後側に対して先細りとなるようなテーパ領域を有することを特徴とする請求項2記載の光コネクタ。
- 前記第2ハウジングの前端部には、前記フェルール部を前側に付勢するバネを複数箇所で支持する支持突部が設けられていることを特徴とする請求項1~3のいずれか一項記載の光コネクタ。
- 前記フェルール部は、上下に対して非対称な形状のフランジ部を有し、
前記第1ハウジングにおいて前記フェルール部を収容する前記フェルール収容スペースは、前記フランジ部に対応する形状を有することを特徴とする請求項1~4のいずれか一項記載の光コネクタ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112012010071A BR112012010071A2 (pt) | 2009-10-28 | 2010-10-06 | conector ótico |
CN201080048241.3A CN102576133B (zh) | 2009-10-28 | 2010-10-06 | 光学连接器 |
EP10826486.2A EP2495590B1 (en) | 2009-10-28 | 2010-10-06 | Optical connector |
MX2012004906A MX2012004906A (es) | 2009-10-28 | 2010-10-06 | Conector optico. |
US13/503,755 US8690454B2 (en) | 2009-10-28 | 2010-10-06 | Optical connector |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009248029 | 2009-10-28 | ||
JP2009-248029 | 2009-10-28 | ||
JP2010-127938 | 2010-06-03 | ||
JP2010127938A JP5369053B2 (ja) | 2009-10-28 | 2010-06-03 | 光コネクタ |
Publications (1)
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WO2011052352A1 true WO2011052352A1 (ja) | 2011-05-05 |
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PCT/JP2010/067520 WO2011052352A1 (ja) | 2009-10-28 | 2010-10-06 | 光コネクタ |
Country Status (7)
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US (1) | US8690454B2 (ja) |
EP (1) | EP2495590B1 (ja) |
JP (1) | JP5369053B2 (ja) |
CN (1) | CN102576133B (ja) |
BR (1) | BR112012010071A2 (ja) |
MX (1) | MX2012004906A (ja) |
WO (1) | WO2011052352A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8801300B2 (en) | 2010-05-14 | 2014-08-12 | Sumitomo Electric Industries, Ltd. | Fiber optic cable end fixture and fiber optic cable end fixing method |
US8876405B2 (en) | 2011-06-27 | 2014-11-04 | 3M Innovative Properties Company | Field terminable optical connector with splice element for jacketed cable |
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JP2013142858A (ja) * | 2012-01-12 | 2013-07-22 | Hitachi Cable Ltd | フェルール保持部材及び光コネクタ |
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JP2015508188A (ja) | 2012-02-20 | 2015-03-16 | エーディーシー テレコミュニケーションズ,インコーポレイティド | 光ファイバコネクタ、光ファイバコネクタとケーブルとの組立体、及び製造方法 |
US8939654B2 (en) | 2012-09-27 | 2015-01-27 | Adc Telecommunications, Inc. | Ruggedized multi-fiber fiber optic connector with sealed dust cap |
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JP7123632B2 (ja) * | 2018-06-01 | 2022-08-23 | 古河電気工業株式会社 | 光コネクタ |
US10983289B2 (en) | 2019-02-27 | 2021-04-20 | Seikoh Giken Co., Ltd. | Optical connector |
CN111208610A (zh) * | 2020-01-21 | 2020-05-29 | 南京续点通信科技有限公司 | 一种缠绕式光缆固紧装置和光纤连接器及其固紧方法 |
KR102601966B1 (ko) * | 2023-04-14 | 2023-11-14 | 대한광통신 주식회사 | 광커넥터 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0961667A (ja) * | 1995-08-29 | 1997-03-07 | Hirose Electric Co Ltd | 光ファイバコード用プラグカシメ治具 |
JP2008197622A (ja) | 2006-11-13 | 2008-08-28 | Sumitomo Electric Ind Ltd | 光コネクタ |
JP2009109978A (ja) * | 2007-07-10 | 2009-05-21 | Fujikura Ltd | 光コネクタおよび光コネクタの組立方法 |
JP2009205100A (ja) * | 2008-02-29 | 2009-09-10 | Sumitomo Electric Ind Ltd | 光コネクタ |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4279466A (en) * | 1978-02-21 | 1981-07-21 | Bunker Ramo Corporation | Hermaphroditic fiber optic connector |
JP2775494B2 (ja) | 1989-10-25 | 1998-07-16 | キヤノン株式会社 | 強誘電性液晶素子 |
US5134677A (en) * | 1991-02-15 | 1992-07-28 | Augat Communications Group | Fiber-optic connector and method of assembly |
US7241056B1 (en) * | 2006-06-13 | 2007-07-10 | Panduit Corp. | Reversible fiber optic connector |
CN101535857B (zh) | 2006-11-13 | 2011-12-07 | 住友电气工业株式会社 | 光纤连接器 |
CN201007747Y (zh) * | 2006-11-28 | 2008-01-16 | 河北四方通信设备有限公司 | 一种光纤连接器 |
JP5093919B2 (ja) | 2007-10-25 | 2012-12-12 | 住友電気工業株式会社 | 光コネクタ用固定部材及び光コネクタの取付方法 |
-
2010
- 2010-06-03 JP JP2010127938A patent/JP5369053B2/ja active Active
- 2010-10-06 US US13/503,755 patent/US8690454B2/en active Active
- 2010-10-06 MX MX2012004906A patent/MX2012004906A/es active IP Right Grant
- 2010-10-06 CN CN201080048241.3A patent/CN102576133B/zh active Active
- 2010-10-06 WO PCT/JP2010/067520 patent/WO2011052352A1/ja active Application Filing
- 2010-10-06 BR BR112012010071A patent/BR112012010071A2/pt not_active Application Discontinuation
- 2010-10-06 EP EP10826486.2A patent/EP2495590B1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0961667A (ja) * | 1995-08-29 | 1997-03-07 | Hirose Electric Co Ltd | 光ファイバコード用プラグカシメ治具 |
JP2008197622A (ja) | 2006-11-13 | 2008-08-28 | Sumitomo Electric Ind Ltd | 光コネクタ |
JP2009109978A (ja) * | 2007-07-10 | 2009-05-21 | Fujikura Ltd | 光コネクタおよび光コネクタの組立方法 |
JP2009205100A (ja) * | 2008-02-29 | 2009-09-10 | Sumitomo Electric Ind Ltd | 光コネクタ |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8801300B2 (en) | 2010-05-14 | 2014-08-12 | Sumitomo Electric Industries, Ltd. | Fiber optic cable end fixture and fiber optic cable end fixing method |
US8876405B2 (en) | 2011-06-27 | 2014-11-04 | 3M Innovative Properties Company | Field terminable optical connector with splice element for jacketed cable |
Also Published As
Publication number | Publication date |
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CN102576133A (zh) | 2012-07-11 |
EP2495590B1 (en) | 2019-02-20 |
EP2495590A1 (en) | 2012-09-05 |
JP2011118348A (ja) | 2011-06-16 |
US8690454B2 (en) | 2014-04-08 |
EP2495590A4 (en) | 2014-10-01 |
US20120243832A1 (en) | 2012-09-27 |
BR112012010071A2 (pt) | 2016-05-31 |
JP5369053B2 (ja) | 2013-12-18 |
MX2012004906A (es) | 2012-06-14 |
CN102576133B (zh) | 2014-06-04 |
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