WO2018135235A1 - 光コネクタ - Google Patents
光コネクタ Download PDFInfo
- Publication number
- WO2018135235A1 WO2018135235A1 PCT/JP2017/046029 JP2017046029W WO2018135235A1 WO 2018135235 A1 WO2018135235 A1 WO 2018135235A1 JP 2017046029 W JP2017046029 W JP 2017046029W WO 2018135235 A1 WO2018135235 A1 WO 2018135235A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mechanical splice
- optical fiber
- joint member
- optical connector
- connector according
- Prior art date
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Classifications
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- 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
- G02B6/3801—Permanent connections, i.e. wherein fibres are kept aligned by mechanical 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
- G02B6/3616—Holders, macro size fixtures for mechanically holding or positioning fibres, e.g. on an optical bench
-
- 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
-
- 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
- G02B6/3869—Mounting ferrules to connector body, i.e. plugs
- G02B6/387—Connector plugs comprising two complementary members, e.g. shells, caps, covers, locked together
-
- 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
- G02B6/2555—Alignment or adjustment devices for aligning prior to splicing
Definitions
- the present invention relates to an optical connector.
- This application claims the priority based on the Japanese application No. 2017-008636 of an application on January 20, 2017, and uses all the content described in the said Japanese application.
- Patent Document 1 discloses an example of an optical connector.
- the optical connector includes a ferrule incorporating a short optical fiber, a mechanical splice that mechanically fixes the short optical fiber extending from the ferrule and the optical fiber of the optical cable, and an outer housing having a mechanical splice housing portion that houses the mechanical splice. And a housing fixing portion for receiving a jacket holder for holding the cable jacket of the optical cable, a connecting member for connecting the mechanical splice and the jacket fixing portion, And a spring that is disposed outside the connecting member and biases the mechanical splice to the tip side through the connecting member.
- the optical fiber of the optical cable in which the cable jacket is held by the jacket holder is inserted into the mechanical splice from the rear side of the connecting member with the mechanical splice being opened.
- the mechanical splice is closed and the short optical fiber and the optical fiber are mechanically fixed.
- An optical connector of the present disclosure includes a ferrule in which a short fiber is incorporated, a mechanical splice that is disposed on the rear side of the ferrule and integrated with the ferrule, and mechanically connects the short fiber and the optical fiber, and a mechanical splice.
- An optical fiber holder that is disposed at the rear and fixes the optical fiber, a joint member that connects the mechanical splice and the optical fiber holder, a housing that accommodates the ferrule and the mechanical splice, and a housing that is disposed on the rear side of the housing
- a rear body that houses at least a part of the optical fiber holder, and a coil spring that is disposed inside at least one of the housing and the rear body and biases the mechanical splice forward.
- the joint member is disposed inside at least one of the housing and the rear body.
- the rear body has a guide wall for guiding the optical fiber into the mechanical splice, and the guide wall is disposed between the mechanical splice and the optical fiber holder, and is tapered from the mechanical splice side toward the optical fiber holder side.
- the inner wall surface has a shape.
- FIG. 1 is a perspective view showing an appearance of an optical connector according to an embodiment.
- FIG. 2 is a cross-sectional view of the optical connector shown in FIG.
- FIG. 3 is an exploded perspective view of the mechanical splice and the joint member.
- FIG. 4A is a perspective view showing a state in which a joint member is connected to a mechanical splice.
- FIG. 4B is another perspective view showing a state in which the joint member is connected to the mechanical splice.
- FIG. 5 is an enlarged cross-sectional view of a region including the coil spring in FIG.
- FIG. 6 is an exploded perspective view of the optical fiber holder shown in FIG.
- FIG. 7 is a cross-sectional view showing a modification of the optical connector shown in FIG.
- FIG. 8A is a perspective view showing a state where the optical fiber holder shown in FIG. 7 is opened.
- FIG. 8B is a perspective view showing a state in which the optical fiber holder shown in FIG. 7 is closed
- the connecting member is provided with a tapered portion that expands toward the rear side (the outer jacket fixing portion side), thereby facilitating insertion of the optical fiber into the mechanical splice.
- the thickness of the connecting member in the vicinity of the connecting portion with the mechanical splice must be increased, leading to an increase in the diameter of the connecting member. As a result, miniaturization of the optical connector is hindered.
- An optical connector includes a ferrule with a built-in short fiber, a mechanical splice that is disposed on the rear side of the ferrule and integrated with the ferrule, and mechanically connects the short fiber and the optical fiber.
- An optical fiber holder that is disposed behind the mechanical splice, fixes the optical fiber, a joint member that connects the mechanical splice and the optical fiber holder, a housing that stores the ferrule and the mechanical splice, and a rear side of the housing
- a rear body that is coupled to the housing and accommodates at least a part of the optical fiber holder, and a coil spring that is disposed inside at least one of the housing and the rear body and biases the mechanical splice forward.
- the joint member is disposed inside at least one of the housing and the rear body.
- the rear body has a guide wall for guiding the optical fiber into the mechanical splice, and the guide wall is disposed between the mechanical splice and the optical fiber holder, and is tapered from the mechanical splice side toward the optical fiber holder side.
- the inner wall surface has a shape.
- the optical fiber when connecting the optical fiber fixed to the optical fiber holder to the short fiber, the optical fiber is inserted into the mechanical splice from the guide wall of the rear body.
- the guide wall has a tapered inner wall surface that widens from the mechanical splice side toward the optical fiber holder side.
- an optical fiber can be smoothly inserted into a mechanical splice.
- the guide wall since the guide wall is provided in the rear body, it is not necessary to provide a guide wall having a tapered inner wall surface in the joint member that connects the mechanical splice and the optical fiber holder. Accordingly, since the thickness of the joint member near the connection portion with the mechanical splice can be reduced, the outer dimension of at least one of the housing and the rear body can be reduced. Thereby, size reduction of an optical connector can be achieved.
- the guide wall may be disposed inside the joint member.
- the guide wall may be spaced apart from the rear end of the mechanical splice.
- the guide wall may or may not have an inner wall surface having a constant inner diameter on the mechanical splice side.
- the coil spring may be disposed inside the joint member.
- the outer dimensions of at least one of the housing and the rear body can be further reduced by the amount of the coil spring as compared with the case where the coil spring is disposed outside the joint member. Thereby, further miniaturization of the optical connector can be achieved.
- the rear part of the mechanical splice may be provided with a recess or protrusion
- the front part of the joint member is provided with a protrusion that fits with the recess of the mechanical splice or a recess that fits with the protrusion of the mechanical splice.
- the joint member may include a pair of arms connected to the optical fiber holder and a holding portion that is provided so as to connect the pair of arms and holds the mechanical splice.
- One front end of the pair of arms may be provided with a protrusion that fits into the recess or a recess that fits into the protrusion.
- the joint member can be easily connected to the rear portion of the mechanical splice, and the optical connector can be easily assembled. Further, since the joint member is firmly connected to the mechanical splice by the holding portion, the protrusion, and the concave portion, the joint member is difficult to be detached from the mechanical splice. Thereby, the handleability of the mechanical splice and the joint member can be improved when the optical connector is assembled.
- the rear end of the housing may be provided with a notch or a protrusion, and the other front end of the pair of arms is engaged with a protrusion engaging with the notch or a protrusion of the housing.
- a notch may be provided. In such a configuration, the joint is positioned with respect to the housing by engaging the protrusion with the notch.
- An opening or a protrusion may be provided in the rear part of the pair of arms, and the pair of arms may be connected to the optical fiber holder by the opening or the protrusion.
- Each of the pair of arms is positioned between the first plate portion, the second plate portion positioned closer to the optical fiber holder than the first plate portion, and the first plate portion and the second plate portion.
- the inclined portion has a shape that is inclined outward toward the optical fiber holder side, and the distance between the second plate portions is greater than the distance between the first plate portions. May be wider.
- the joint member may be positioned so that at least one of the inclined portion and the second plate portion is positioned outside the tapered inner wall surface of the guide wall.
- the joint member may be configured to be coupled to the mechanical splice by engaging the holding portion with a holding groove provided at the rear portion of the mechanical splice.
- the holding part may be C-shaped.
- the mechanical splice may include a base member having a fiber groove for positioning the optical fiber and the short fiber, and a pressing member that presses the optical fiber and the short fiber against the base member.
- the base member is integrated with the ferrule.
- a recess or projection for connecting to the joint member may be provided at the rear portion of the base member.
- FIG. 1 is a perspective view showing an appearance of an optical connector according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of the optical connector shown in FIG. 1 and 2, the optical connector 1 of this embodiment is an example of a type called a so-called LC connector.
- the optical connector 1 includes a ferrule 2, a mechanical splice 3, an optical fiber holder 4, a joint member 5, a plug housing 6, a rear body 7, a cover housing 8, and a coil spring 9. It has.
- Ferrule 2 has a cylindrical shape.
- the front end surface of the ferrule 2 is an optical connection surface that is optically connected to another optical connector.
- a short fiber 10 is built in the ferrule 2 in advance.
- the short fiber 10 is fixed to the ferrule 2 with an adhesive or the like.
- the short fiber 10 extends rearward (for example, in the right direction in FIG. 2) from the rear end face of the ferrule 2.
- the mechanical splice 3 is arranged on the rear side of the ferrule 2.
- the mechanical splice 3 is integrated with the ferrule 2 by an adhesive or the like.
- the mechanical splice 3 is an openable and closable optical connector that mechanically connects the short fiber 10 built in the ferrule 2 and the optical fiber 12 of the optical cable 11.
- the optical cable 11 has a structure in which an optical fiber 12 is covered with a cable jacket 13.
- the mechanical splice 3 includes a base member 15 having a fiber groove 14 having a V-shaped cross section for positioning the optical fiber 12 and the short fiber 10, and the optical fiber 12 and short fiber 10 accommodated in the fiber groove 14 with respect to the base member 15. And a pressing member 16 to be pressed and a plurality of clamp springs 17 having a U-shaped cross section sandwiching the base member 15 and the pressing member 16.
- the base member 15 is integrated with the ferrule 2.
- a plurality of recesses 18 for inserting wedges are provided at the boundary between the base member 15 and the pressing member 16 in the mechanical splice 3. When a wedge (not shown) is inserted into the recess 18, the base member 15 and the pressing member 16 are opened against the urging force of the clamp spring 17.
- a recess 19 for connection is provided at the rear part of the base member 15.
- a substantially semi-cylindrical protrusion 20 is provided at the rear end of the base member 15.
- the projecting portion 20 is provided with a semi-ring-shaped holding groove 21.
- a substantially semi-cylindrical protrusion 22 is provided at the rear end of the pressing member 16 so as to face the protrusion 20.
- a tapered inner wall surface 23 whose diameter increases toward the rear side of the mechanical splice 3 is provided at the rear end portion of the mechanical splice 3.
- the optical fiber holder 4 is disposed behind the mechanical splice 3 and fixes the optical fiber 12 by fixing the optical cable 11. As shown in FIG. 6, the optical fiber holder 4 has a holder body 24 and a cap 25.
- the holder body 24 includes a base 26, a cylindrical portion 27 projecting from the rear end (tip) of the base 26, and a pair of rear ends extending from the rear end (tip) of the cylindrical portion 27. And a gripping portion 29 composed of an arm 28.
- the base 26 is provided with a pair of connecting projections 30.
- a male screw 31 is formed on the outer peripheral surface of the cylindrical portion 27.
- the gripping part 29 grips the cable jacket 13 of the optical cable 11 with a pair of arms 28.
- the holder main body 24 is provided with a hole 32 through which the optical fiber 12 exposed by removing the cable jacket 13 is inserted over the cylindrical portion 27 and the base 26 (see FIG. 2).
- the cap 25 has a substantially cylindrical shape. On the inner peripheral surface on the front end side of the cap 25, a female screw 33 that is screwed with the male screw 31 is formed (see FIG. 2).
- the exposed optical fiber 12 is inserted into the hole 32 of the holder body 24 with the optical cable 11 being inserted into the cap 25.
- the cap 25 is screwed into the tubular portion 27.
- each arm 28 of the holding part 29 is elastically deformed so as to sandwich the cable jacket 13.
- the cable jacket 13 is gripped by the grip portion 29.
- the joint member 5 connects the mechanical splice 3 and the optical fiber holder 4. As shown in FIG. 3, the joint member 5 is provided so as to connect a pair of arms 34 connected to the optical fiber holder 4 and the front portions of the pair of arms 34, with the mechanical splice 3 interposed therebetween. And a substantially C-shaped holding portion 35 for holding.
- the arm 34 has a plate shape. Each arm 34 is provided with a connection opening 36 that engages with the protrusion 30 of the holder body 24. The joint member 5 and the optical fiber holder 4 are connected by the protrusion 30 being caught in the opening 36.
- the holder main body 24 may be provided with a connection opening, and the arm 34 may be provided with a connection protrusion.
- Each arm 34 includes a first plate portion 34a, a second plate portion 34b located closer to the optical fiber holder 4 than the first plate portion 34a, a first plate portion 34a, and a second plate portion 34b. And an inclined portion 34c located between the two.
- the inclined portion 34c has a shape that is inclined outward toward the optical fiber holder 4, and is configured such that the distance between the second plate portions 34b is larger than the distance between the first plate portions 34a. Yes.
- the opening 36 is provided, for example, in the second plate portion 34b.
- a connecting projection 37 that fits into the recess 19 of the base member 15 is provided at one front end of the pair of arms 34.
- a connection protrusion may be provided at the rear portion of the base member 15, and a connection recess that fits with the connection protrusion may be provided at the front end of the arm 34.
- the other front end of the pair of arms 34 is provided with a support protrusion 38 that contacts the pressing member 16 and a positioning protrusion 39 that engages with a notch 42 (described later) of the plug housing 6. Yes.
- the holding part 35 engages with the holding groove 21 of the base member 15 as shown in FIGS. 4A and 4B.
- the holding portion 35 is elastically deformed and fits into the holding groove 21, the projection 37 is caught in the concave portion 19, and the support protrusion 38 comes into contact with the protruding portion 22 of the pressing member 16.
- the joint member 5 and the mechanical splice 3 are connected in a state of being tightly fitted.
- the plug housing 6 accommodates the ferrule 2 and the mechanical splice 3.
- the plug housing 6 has a rectangular shape in front view. The front end side portion of the ferrule 2 protrudes from the front end of the plug housing 6.
- a window 40 that exposes the recess 18 is provided at a position corresponding to the wedge insertion recess 18 of the mechanical splice 3 in the plug housing 6.
- a pair of projections 41 for connection are provided on the rear portion of the plug housing 6.
- a notch 42 for aligning the joint member 5 and the plug housing 6 is provided at the rear end of the plug housing 6.
- the joint member 5 is positioned with respect to the plug housing 6 by the protrusion 39 for positioning the joint member 5 entering the notch 42.
- a positioning projection may be provided at the rear end of the plug housing 6, and a notch that engages with the positioning projection may be provided at the front end of the arm 34.
- the rear body 7 is connected to the plug housing 6 so as to be arranged on the rear side of the plug housing 6.
- the rear body 7 accommodates the optical fiber holder 4 and the joint member 5.
- the rear body 7 has a rectangular shape in front view.
- a notch 43 for exposing one wedge insertion recess 18 in cooperation with the window 40 of the plug housing 6 is provided in the front part of the rear body 7.
- a pair of connection openings 44 that engage with the protrusions 41 of the plug housing 6 are provided at the front portion of the rear body 7.
- the plug housing 6 and the rear body 7 are connected by the projections 41 being caught in the openings 44.
- a connection opening may be provided in the rear part of the plug housing 6, and a connection protrusion may be provided in the front part of the rear body 7.
- a pair of shaft portions 7 a are projected.
- a pair of protrusions 45 for locking are provided at the rear part of the rear body 7.
- a front accommodation region 46 that accommodates the mechanical splice 3 and the rear portion of the plug housing 6 together with the front portion of the joint member 5 is disposed.
- a rear housing region 47 that houses the rear portion of the joint member 5 and the holder main body 24 of the optical fiber holder 4 is disposed.
- a guide wall 48 for guiding the exposed optical fiber 12 into the mechanical splice 3 is provided between the front housing region 46 and the rear housing region 47 in the rear body 7. That is, the guide wall 48 is disposed between the mechanical splice 3 and the optical fiber holder 4. At this time, the guide wall 48 is disposed away from the rear end of the mechanical splice 3. Further, the guide wall 48 is disposed inside the joint member 5.
- the guide wall 48 has a tapered inner wall surface 49 whose diameter increases from the mechanical splice 3 side toward the optical fiber holder 4 side.
- the inner diameter of the inner wall surface 49 gradually increases from the mechanical splice 3 side toward the optical fiber holder 4 side.
- An inner wall surface 50 having a constant inner diameter is provided on the front side of the inner wall surface 49 in the guide wall 48.
- the guide wall 48 and the joint member 5 are positioned so that the inclined portion 34c and the second plate portion 34b of the arm 34 of the joint member 5 are positioned outside the tapered inner wall surface 49 of the guide wall 48. Yes.
- the joint member 5 is disposed inside the rear body 7, but is not limited thereto.
- the joint member 5 may be disposed inside the plug housing 6 or may be disposed across both the rear body 7 and the plug housing 6.
- the cover housing 8 covers the holder body 24 of the optical fiber holder 4.
- the cover housing 8 is attached to the rear body 7 via a shaft portion 7a so as to be rotatable (openable and closable).
- the cover housing 8 is provided with a pair of locking openings 51 that engage with the protrusions 45 of the rear body 7. When the cover housing 8 is closed, the projections 45 are hooked on the openings 51, whereby the cover housing 8 is locked to the rear body 7.
- the cover housing 8 may be provided with a locking projection, and the rear body 7 may be provided with a locking opening.
- the coil spring 9 is arranged inside the joint member 5 in the rear body 7 and outside the guide wall 48 as shown in FIG.
- the inside of the joint member 5 corresponds to the axial center side of the ferrule 2 in the joint member 5.
- the coil spring 9 is disposed between the joint member 5, the mechanical splice 3 and the guide wall 48.
- the coil spring 9 biases the mechanical splice 3 forward.
- One end (front end) of the coil spring 9 is in contact with the support protrusion 38 of the joint member 5, and the other end (rear end) of the coil spring 9 is in contact with the vertical wall surface of the guide wall 48.
- the coil spring 9 is disposed inside the rear body 7, but is not limited thereto.
- the coil spring 9 may be disposed inside the plug housing 6, or may be disposed across both the rear body 7 and the plug housing 6.
- a method of connecting the optical fiber 12 of the optical cable 11 fixed to the optical fiber holder 4 to the short fiber 10 built in the ferrule 2 when the optical connector 1 is assembled will be described.
- a wedge is inserted into the wedge insertion recess 18 of the mechanical splice 3 to open the base member 15 and the pressing member 16 against the urging force of the clamp spring 17.
- the optical fiber 12 is inserted into the inner space of the inner wall surfaces 49 and 50 of the guide wall 48 and inserted into the mechanical splice 3.
- the base member 15 and the pressing member 16 are closed by the urging force of the clamp spring 17 by pulling out the wedge from the recess 18.
- the optical fiber 12 and the short fiber 10 are mechanically connected by the mechanical splice 3.
- the optical fiber 12 when the optical fiber 12 is connected to the short fiber 10, the optical fiber 12 is inserted into the mechanical splice 3 from the guide wall 48 of the rear body 7.
- the guide wall 48 has a tapered inner wall surface 49 whose diameter increases from the mechanical splice 3 side toward the optical fiber holder 4 side. Thereby, the optical fiber 12 can be smoothly inserted into the mechanical splice 3.
- the guide wall 48 since the guide wall 48 is provided in the rear body 7, it is not necessary to provide a guide wall having a tapered inner wall surface in the joint member 5 that connects the mechanical splice 3 and the optical fiber holder 4. For this reason, the thickness of the joint member 5 in the vicinity of the connecting portion with the mechanical splice 3 can be reduced.
- the outer wall surface of the guide wall 48 can also be tapered so that the outer diameter increases from the mechanical splice 3 side toward the optical fiber holder 4 side. Since the joint member 5 is disposed outside the mechanical splice 3, the thickness of the joint member 5 greatly affects the outer dimensions of the rear body 7. On the other hand, since the guide wall 48 is disposed behind the mechanical splice 3, the thickness of the guide wall 48 has little influence on the outer dimensions of the rear body 7. Therefore, since the thickness of the joint member 5 can be reduced as described above, the outer dimension of the rear body 7 can be reduced. Thereby, size reduction of the optical connector 1 can be achieved.
- the outer dimensions of the plug housing 6 can be reduced.
- the joint member 5 is disposed across both the rear body 7 and the plug housing 6, the outer dimensions of the rear body 7 and the plug housing 6 can be reduced.
- the coil spring 9 is disposed inside the joint member 5 and outside the guide wall 48.
- the outer dimension of the rear body 7 can be further reduced by the amount of the coil spring 9 as compared with the case where the coil spring 9 is disposed outside the joint member 5. Thereby, the further miniaturization of the optical connector 1 can be achieved.
- the outer dimensions of the plug housing 6 can be further reduced by the amount of the coil spring 9.
- the outer dimensions of the rear body 7 and the plug housing 6 can be further reduced by the amount of the coil spring 9.
- a connecting recess 19 is provided at the rear part of the mechanical splice 3, and a connecting projection 37 that fits into the recess 19 is provided at the front end of one arm 34 of the joint member 5.
- the joint member 5 can be easily connected to the rear portion of the mechanical splice 3, and the optical connector 1 can be easily assembled. Further, since the joint member 5 is firmly connected to the mechanical splice 3 by the holding portion 35, the protrusion 37, and the concave portion 19, the joint member 5 is unlikely to be detached from the mechanical splice 3. Thereby, the handleability of the mechanical splice 3 and the joint member 5 can be improved when the optical connector 1 is assembled.
- the joint member 5 is formed by the holding part 35, the connecting protrusion and the connecting recess. Is firmly connected to the mechanical splice 3, so that the joint member 5 is not easily detached from the mechanical splice 3.
- the coupling splice is provided on the mechanical splice 3.
- the thickness of the connecting portion of the joint member 5 to the mechanical splice 3 is smaller than that of the structure in which the joint opening is provided in the joint member 5 to engage with the protrusion. The dimensions can be further reduced. Thereby, the further miniaturization of the optical connector 1 can be achieved.
- a notch 42 is provided at the rear end of the plug housing 6, and a positioning protrusion 39 that engages with the notch 42 is provided at the front end of the other arm 34 of the joint member 5. Is provided. In this configuration, the joint 39 is positioned with respect to the plug housing 6 by the protrusion 39 engaging with the notch 42.
- the recess 19 is provided in the rear part of the base member 15 integrated with the ferrule 2, the connection state between the mechanical splice 3 and the joint member 5 is stabilized. The same applies when a connecting projection is provided at the rear of the base member 15.
- the support protrusion 38 since the support protrusion 38 only contacts the mechanical splice 3 and is not connected, the base member 15 and the pressing member 16 in the mechanical splice 3 can be easily opened.
- the optical cable 11 covered with the optical fiber 12 by the cable jacket 13 is fixed by the optical fiber holder 4, but the optical fiber holder 4 can also fix the optical fiber 12 itself, for example.
- FIG. 7 is a cross-sectional view showing a modification of the optical connector shown in FIG.
- the optical connector 1 ⁇ / b> A of the present modification is similar to the optical connector 1 in that a ferrule 2, a mechanical splice 3, a joint member 5, a plug housing 6, a rear body 7, a cover housing 8, and a coil spring 9.
- the optical connector 1 ⁇ / b> A of this modification includes an optical fiber holder 60 instead of the optical fiber holder 4.
- the optical fiber holder 60 is a dedicated cable holder for fixing the optical cable 11.
- the optical fiber holder 60 is integrally formed with a base 61 having a plurality of blades 61a (demons) that bite into the cable jacket 13 of the optical cable 11, and the base 61 and the hinge 62. And a lid 63.
- the base 61 is provided with a locking projection 64.
- the lid 63 is provided with a locking opening 65 that engages with the protrusion 64. When the protrusion 64 is caught in the opening 65, the lid 63 is locked to the base 61.
- the lid 63 may be provided with a locking projection, and the base 61 may be provided with a locking opening.
- the present invention is not limited to the above embodiment and modification examples.
- the coil spring 9 is disposed inside the joint member 5, but is not particularly limited to that form, and the coil spring 9 may be disposed outside the joint member 5. Even in this case, since the thickness of the joint member 5 can be reduced, the optical connector 1 can be downsized.
- the connecting recess 19 is provided in the base member 15 of the mechanical splice 3.
- the present invention is not limited to this configuration, and the connecting recess 19 is provided in the pressing member 16 of the mechanical splice 3. May be.
- the concave portion 19 is provided at the rear portion of the mechanical splice 3, and the projection 37 that fits the concave portion 19 is provided at the front end portion of the one arm 34 in the joint member 5.
- the joint member 5 and the mechanical splice 3 may have a stop portion that prevents the joint member 5 from moving in the longitudinal direction (front-rear direction) with respect to the mechanical splice 3. In this case, since the joint member 5 is prevented from being lifted by covering the mechanical splice 3 with the plug housing 6 and the rear body 7, the joint member 5 is not detached from the mechanical splice 3 after the optical connector 1 is assembled.
- the LC connector has been described as an example of the optical connector 1, but the present invention is not particularly limited thereto, and can be applied to other types of optical connectors.
Abstract
Description
本出願は、2017年1月20日出願の日本出願第2017-008636号に基づく優先権を主張し、前記日本出願に記載された全ての記載内容を援用する。
光コネクタの組み立て時の作業性を考慮すると、メカニカルスプライス内に光ファイバをスムーズに挿入可能であることが望ましい。特許文献1の光コネクタでは、連結部材に後側(外被固定部側)に向かって広がるテーパ部分を設けることで、光ファイバをメカニカルスプライス内に挿入しやすくしている。しかし、この場合には、連結部材におけるメカニカルスプライスとの連結部付近の肉厚が大きくならざるを得ないため、連結部材の大径化につながる。その結果、光コネクタの小型化を阻害する。
本開示によれば、光コネクタの小型化を図りつつ、メカニカルスプライス内に光ファイバをスムーズに挿入することができる。
最初に、本発明の実施形態を列記して説明する。
以下、本発明の実施形態について、図面を参照して詳細に説明する。本発明はこれらの例示に限定されるものではなく、請求の範囲によって示され、請求の範囲と均等の意味及び範囲内でのすべての変更が含まれることが意図される。以下の説明では、図面の説明において同一の要素には同一の符号を付し、重複する説明を省略する。
Claims (15)
- 短尺ファイバが内蔵されたフェルールと、
前記フェルールの後側に配置されると共に前記フェルールと一体化され、前記短尺ファイバと光ファイバとを機械的に接続するメカニカルスプライスと、
前記メカニカルスプライスの後方に配置され、前記光ファイバを固定する光ファイバホルダと、
前記メカニカルスプライスと前記光ファイバホルダとを連結するジョイント部材と、
前記フェルール及び前記メカニカルスプライスを収容するハウジングと、
前記ハウジングの後側に配置されるように前記ハウジングに連結され、前記光ファイバホルダの少なくとも一部を収容するリアボディと、
前記ハウジング及び前記リアボディの少なくとも一方の内部に配置され、前記メカニカルスプライスを前側に付勢するコイルバネと、を備え、
前記ジョイント部材は、前記ハウジング及び前記リアボディの少なくとも一方の内部に配置されており、
前記リアボディは、前記光ファイバを前記メカニカルスプライス内に案内するためのガイド壁を有し、前記ガイド壁は、前記メカニカルスプライスと前記光ファイバホルダとの間に配置され、前記メカニカルスプライス側から前記光ファイバホルダ側に向かって広がるテーパ状の内壁面を有する、光コネクタ。 - 前記ガイド壁は、前記ジョイント部材の内側に配置される、
請求項1に記載の光コネクタ。 - 前記ガイド壁は、前記メカニカルスプライスの後端から離間して配置される、
請求項1又は請求項2に記載の光コネクタ。 - 前記ガイド壁は、その内径が一定である内壁面を前記メカニカルスプライス側に有している、
請求項1~請求項3の何れか一項に記載の光コネクタ。 - 前記コイルバネは、前記ジョイント部材の内側に配置されている、
請求項1~請求項4の何れか一項に記載の光コネクタ。 - 前記メカニカルスプライスの後部には、凹部または突起が設けられており、
前記ジョイント部材の前部には、前記メカニカルスプライスの前記凹部と嵌合する突起、または前記メカニカルスプライスの前記突起と嵌合する凹部が設けられている、
請求項1~請求項5の何れか一項に記載の光コネクタ。 - 前記ジョイント部材は、前記光ファイバホルダと連結される1対のアームと、前記1対のアームを繋ぐように設けられ、前記メカニカルスプライスを挟んで保持する保持部と、を有する、
請求項1~請求項6の何れか一項に記載の光コネクタ。 - 前記1対のアームの一方の前端部には、突起または凹部が設けられている、
請求項7に記載の光コネクタ。 - 前記ハウジングの後端部には、切欠きまたは突部が設けられており、
前記1対のアームの他方の前端部には、前記切欠きと係合する突部または前記ハウジングの前記突部と係合する切欠きが設けられている、
請求項7又は請求項8に記載の光コネクタ。 - 前記1対のアームの後部には、開口又は突起が設けられており、
前記1対のアームは、前記開口又は突起により前記光ファイバホルダに連結される、
請求項7~請求項9の何れか一項に記載の光コネクタ。 - 前記1対のアームそれぞれは、第1の板部と、前記第1の板部より前記光ファイバホルダ側に位置する第2の板部と、前記第1の板部と前記第2の板部との間に位置する傾斜部と、を有し、
前記傾斜部は、前記光ファイバホルダ側に向かって外に傾斜する形状を有し、前記第2の板部間の距離が前記第1の板部間の距離よりも広い、
請求項7~請求項10の何れか一項に記載の光コネクタ。 - 前記傾斜部及び前記第2の板部の少なくとも一方が、前記ガイド壁の前記テーパ状の内壁面の外側に位置するように、前記ジョイント部材が位置決めされている、
請求項11に記載の光コネクタ。 - 前記ジョイント部材は、前記保持部が前記メカニカルスプライスの後部に設けられた保持溝に係合することで、前記メカニカルスプライスに連結される、
請求項7~請求項12の何れか一項に記載の光コネクタ。 - 前記保持部は、C字形状である、
請求項7~請求項13の何れか一項に記載の光コネクタ。 - 前記メカニカルスプライスは、前記光ファイバ及び前記短尺ファイバを位置決めするファイバ溝を有するベース部材と、前記光ファイバ及び前記短尺ファイバを前記ベース部材に対して押し付ける押圧部材とを有し、
前記ベース部材は、前記フェルールと一体化されており、
前記ジョイント部材に連結するための凹部または突起が前記ベース部材の後部に設けられている、
請求項1~請求項14の何れか一項に記載の光コネクタ。
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US16/479,279 US10866365B2 (en) | 2017-01-20 | 2017-12-21 | Optical connector |
CN201780083957.9A CN110235037B (zh) | 2017-01-20 | 2017-12-21 | 光连接器 |
JP2018563238A JP7089485B2 (ja) | 2017-01-20 | 2017-12-21 | 光コネクタ |
EP17893315.6A EP3572856A4 (en) | 2017-01-20 | 2017-12-21 | OPTICAL CONNECTOR |
BR112019014249A BR112019014249A2 (pt) | 2017-01-20 | 2017-12-21 | conector óptico |
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006019161A (ja) | 2004-07-02 | 2006-01-19 | Shinmei Ind Co Ltd | 着脱補助機能を有するプラグ |
WO2006019161A1 (ja) * | 2004-08-20 | 2006-02-23 | Sumitomo Electric Industries, Ltd. | 光コネクタ、及び光コネクタの組立方法 |
JP2007199741A (ja) * | 2002-02-08 | 2007-08-09 | Fujikura Ltd | 光ファイバ接続方法及び光ファイバ接続工具 |
WO2010004772A1 (ja) * | 2008-07-10 | 2010-01-14 | 株式会社フジクラ | 光コネクタおよび光コネクタの組立方法 |
JP2011141435A (ja) * | 2010-01-07 | 2011-07-21 | Sumitomo Electric Ind Ltd | 光ファイバ接続器及び光ファイバ接続方法 |
JP2013015791A (ja) * | 2011-07-06 | 2013-01-24 | Fujikura Ltd | 光コネクタ |
WO2016200518A1 (en) * | 2015-06-12 | 2016-12-15 | 3M Innovative Properties Company | Optical fiber with thin film coating and connector |
JP2017008636A (ja) | 2015-06-24 | 2017-01-12 | 株式会社 ダンネツ | ベタ基礎用の型枠ホルダ材 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2003207215A1 (en) | 2002-02-08 | 2003-09-02 | Fujikura Ltd. | Optical fiber connection tool and optical fiber connection method |
JP4091011B2 (ja) * | 2004-03-16 | 2008-05-28 | 株式会社フジクラ | 光コネクタ |
JP2007279528A (ja) | 2006-04-10 | 2007-10-25 | Sumitomo Electric Ind Ltd | 光コネクタ及び光コネクタの組立方法 |
JP4976145B2 (ja) | 2007-01-19 | 2012-07-18 | 住友電気工業株式会社 | 光コネクタ |
JP5172510B2 (ja) * | 2007-07-10 | 2013-03-27 | 株式会社フジクラ | 光コネクタおよび光コネクタの組立方法 |
JP4851430B2 (ja) | 2007-12-10 | 2012-01-11 | 古河電気工業株式会社 | 光コネクタ |
JP5497332B2 (ja) | 2009-05-14 | 2014-05-21 | スリーエム イノベイティブ プロパティズ カンパニー | 光コネクタ |
CN102713704A (zh) * | 2010-01-15 | 2012-10-03 | 康宁光缆系统有限责任公司 | 光纤连接端接系统的光纤连接器 |
JP6441667B2 (ja) * | 2014-12-25 | 2018-12-19 | 住友電気工業株式会社 | レセプタクルコネクタ |
-
2017
- 2017-12-21 WO PCT/JP2017/046029 patent/WO2018135235A1/ja unknown
- 2017-12-21 CN CN201780083957.9A patent/CN110235037B/zh active Active
- 2017-12-21 EP EP17893315.6A patent/EP3572856A4/en active Pending
- 2017-12-21 US US16/479,279 patent/US10866365B2/en active Active
- 2017-12-21 BR BR112019014249A patent/BR112019014249A2/pt unknown
- 2017-12-21 JP JP2018563238A patent/JP7089485B2/ja active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007199741A (ja) * | 2002-02-08 | 2007-08-09 | Fujikura Ltd | 光ファイバ接続方法及び光ファイバ接続工具 |
JP2006019161A (ja) | 2004-07-02 | 2006-01-19 | Shinmei Ind Co Ltd | 着脱補助機能を有するプラグ |
WO2006019161A1 (ja) * | 2004-08-20 | 2006-02-23 | Sumitomo Electric Industries, Ltd. | 光コネクタ、及び光コネクタの組立方法 |
WO2010004772A1 (ja) * | 2008-07-10 | 2010-01-14 | 株式会社フジクラ | 光コネクタおよび光コネクタの組立方法 |
JP2011141435A (ja) * | 2010-01-07 | 2011-07-21 | Sumitomo Electric Ind Ltd | 光ファイバ接続器及び光ファイバ接続方法 |
JP2013015791A (ja) * | 2011-07-06 | 2013-01-24 | Fujikura Ltd | 光コネクタ |
WO2016200518A1 (en) * | 2015-06-12 | 2016-12-15 | 3M Innovative Properties Company | Optical fiber with thin film coating and connector |
JP2017008636A (ja) | 2015-06-24 | 2017-01-12 | 株式会社 ダンネツ | ベタ基礎用の型枠ホルダ材 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3572856A4 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022050222A1 (ja) * | 2020-09-04 | 2022-03-10 | 日本通信電材株式会社 | 光コネクタ |
GB2612540A (en) * | 2020-09-04 | 2023-05-03 | Nippon Tsushin Denzai Co Ltd | Optical connector |
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JP7089485B2 (ja) | 2022-06-22 |
BR112019014249A2 (pt) | 2020-04-28 |
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JPWO2018135235A1 (ja) | 2019-11-07 |
US20190384011A1 (en) | 2019-12-19 |
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