WO2011018996A1 - 光コネクタ及びその組立方法 - Google Patents
光コネクタ及びその組立方法 Download PDFInfo
- Publication number
- WO2011018996A1 WO2011018996A1 PCT/JP2010/063372 JP2010063372W WO2011018996A1 WO 2011018996 A1 WO2011018996 A1 WO 2011018996A1 JP 2010063372 W JP2010063372 W JP 2010063372W WO 2011018996 A1 WO2011018996 A1 WO 2011018996A1
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- WIPO (PCT)
- Prior art keywords
- optical fiber
- fiber
- connector
- optical
- bending
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- Ceased
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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
- G02B6/3807—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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49174—Assembling terminal to elongated conductor
Definitions
- the present invention relates to an optical connector used for connecting an optical fiber for optical communication, for example, and an assembling method thereof.
- the connector body 2 into which the optical fiber 1 for a line is inserted includes a built-in fiber 3 whose end face is polished, and the built-in fiber 3 Is held by the ferrule 4, and the optical fiber 1 for line and the built-in fiber 3 are connected by a mechanical splice via a refractive index matching agent 5.
- Non-Patent Document 1 See, for example, Non-Patent Document 1).
- the fiber guide 6 that guides the optical fiber 1 to the connection portion with the built-in fiber 3 is formed by a groove or a hole through which the optical fiber 1 can be inserted. For this reason, if there is a region where the optical fiber 1 can bend inside the optical connector or on the rear end side of the connector, it is not possible to generate an insertion force in the optical fiber 1 that is larger than the size of the region.
- this insertion force is P [N]
- the insertion force P is determined by the length L [m] of the flexible region (between the fiber holder 7 holding the optical fiber and the fiber guide 6) (see FIG. 43).
- a two-part blade 8 having an inner diameter of 175 ⁇ m is used, and the optical fiber 1 is attached with the blade 8 as shown in FIG.
- There is a method of removing the coating 1b of the bare fiber 1a by sandwiching from both sides and pulling out the optical fiber 1 as shown in FIG. 45 (c) for example, see Non-Patent Document 3).
- a coated optical fiber core wire is inserted into the optical connector, and the sheath of the core wire is removed from the connector body. It is known (see, for example, Patent Document 1).
- the ferrule 4 is provided with a coating removal portion 4b having an insertion port 4a having an inner diameter of 175 ⁇ m, and as shown in FIG. 46 (b), light is applied to the end face of the coating removal portion 4b. By pressing the fiber 1, the coating 1b can be peeled off in the connector.
- the portion that contacts the opposite fiber is cut off at the corner of the cut end face of the line fiber.
- a technique for realizing physical contact connection by using only a smooth portion at the center of the end face is also known (see, for example, Non-Patent Document 4).
- the fiber is inserted into the connector after processing the tip of the optical fiber, but in order to simplify the assembly work of the field assembly type connector as described above, the insertion force of the optical fiber into the connector is used.
- the optical fiber is inserted when the connector is inserted.
- a force larger than the insertion force limited by the flexible portion of the fiber is required, and there is a problem that the optical fiber cannot be properly inserted into the optical connector.
- FIG. 44 shows the relationship between the alignment length of the optical connector and the maximum loss due to the angle deviation of the optical axis.
- the length L of the flexible portion of the optical fiber 1 is about 3.5 mm, and the maximum insertion force is about 2.7 N from the equation (1).
- the present invention has been made in view of the above problems, and the object of the present invention is to increase the insertion force of the optical fiber at the time of assembling the connector and to prevent the insertion due to the entry of foreign matter such as dust. It is another object of the present invention to provide an optical connector and an assembling method that are advantageous for realizing the end processing of the optical fiber using the insertion force of the optical fiber.
- the present invention provides an optical connector in which an optical fiber is inserted into a connector body, wherein the length in the optical fiber insertion direction is variably formed, and light is inserted when the optical fiber is inserted into the connector body.
- a bending restricting portion for restricting the bending of the optical fiber while being shortened in the fiber insertion direction is provided.
- the bending of the optical fiber is restricted while the bending restricting portion is shortened in the optical fiber insertion direction.
- the insertion force of the optical fiber can be increased.
- the present invention provides a light having a bending restricting portion that is variably formed in the length of the optical fiber insertion direction and restricts the bending of the optical fiber when the optical fiber is inserted into the connector body.
- the optical fiber is inserted into the connector main body while shortening the length of the bending restricting portion in the optical fiber insertion direction.
- the bending of the optical fiber is restricted while the bending restricting portion is shortened in the optical fiber insertion direction.
- the insertion force of the optical fiber can be increased.
- the present invention provides an optical connector in which an optical fiber is inserted into a connector main body, a coating removing unit that removes the coating of the optical fiber by the insertion force of the optical fiber, and an insertion force of the optical fiber.
- the end face grinding part that grinds the corner of the tip face of the optical fiber and the length in the optical fiber insertion direction are variably formed, and the optical fiber is shortened in the optical fiber insertion direction when the optical fiber is inserted into the connector body.
- a bend restricting portion for restricting the bend.
- the coating of the optical fiber is removed by the insertion force of the optical fiber, and the corner portion of the front end surface of the optical fiber is ground. It is not necessary to remove the coating and to perform end face grinding.
- the bending of the optical fiber is restricted while the bending restricting portion is shortened in the optical fiber insertion direction. In this case, the insertion force of the optical fiber can be increased.
- the present invention provides a coating removal unit that removes the coating of the optical fiber by the insertion force of the optical fiber, and an end surface grinding that grinds a corner portion of the tip surface of the optical fiber by the insertion force of the optical fiber
- an optical connector assembly method comprising: a bending portion that is variably formed in a length in an optical fiber insertion direction, and that restricts the bending of the optical fiber when the optical fiber is inserted into the connector body.
- the coating of the optical fiber is removed by the insertion force of the optical fiber, and the corner portion of the front end surface of the optical fiber is ground. It is not necessary to remove the coating and to perform end face grinding.
- the bending of the optical fiber is restricted while the bending restricting portion is shortened in the optical fiber insertion direction. In this case, the insertion force of the optical fiber can be increased.
- the present invention provides an optical connector in which an optical fiber is inserted into a connector body, and is formed so as to be elastically deformable in the optical fiber insertion direction, and the optical fiber is inserted into the connector body.
- a bending restricting portion that restricts the bending of the optical fiber while contracting in the insertion direction is provided.
- the bending of the optical fiber is restricted while the bending restricting portion contracts in the optical fiber insertion direction.
- the insertion force of the optical fiber can be increased.
- the present invention provides an optical connector provided with a bending restricting portion that is formed to be elastically deformable in the optical fiber insertion direction and restricts the bending of the optical fiber when the optical fiber is inserted into the connector body.
- the optical fiber is inserted into the connector main body while the bending restricting portion is contracted in the optical fiber insertion direction.
- the bending of the optical fiber is restricted while the bending restricting portion contracts in the optical fiber insertion direction.
- the insertion force of the optical fiber can be increased.
- the optical fiber since the optical fiber does not bend even if the insertion allowance is lengthened, the insertion force of the optical fiber can be sufficiently increased, and foreign matter such as dust enters to increase the insertion resistance. Even in this case, the optical fiber can be surely inserted. Further, it is extremely advantageous for realizing the end treatment of the optical fiber using the insertion force of the optical fiber, such as the removal of the coating of the optical fiber and the end surface grinding treatment.
- (First embodiment) 1 to 3 show a first embodiment of the present invention.
- An optical connector 10 shown in the figure is for connecting an optical fiber 1 to a mating connector.
- the optical connector 10 includes a connector main body 11 into which the optical fiber 1 is inserted, a ferrule 12 attached to one end side of the connector main body 11, a first fiber guide 13 fixed in the connector main body 11, and a connector main body. 11, a second fiber guide 14 that is movably provided with respect to 11, a bending restricting portion 15 that restricts bending of the optical fiber 1 inserted into the connector main body 11, and a fixing member 16 that fixes the optical fiber 1. It has.
- the connector body 11 is formed so that, for example, the optical fiber 1 having an outer diameter of the bare fiber 1a of 125 ⁇ m and an outer diameter of the covering 1b of 250 ⁇ m is inserted and can be fitted to the mating connector.
- the ferrule 12 has a hole having an inner diameter substantially equal to the outer diameter of the bare fiber 1a from which the coating has been removed at the center in the radial direction, and the built-in fiber 12a is inserted into the hole.
- the built-in fiber 12a has one end surface disposed on the tip surface of the ferrule 12, and the end surface is polished so as to be a smooth surface capable of transmitting light to the optical fiber of the mating connector.
- the other end of the built-in fiber 12 a protrudes from the end face of the ferrule 12 into the first fiber guide 13.
- the first fiber guide 13 is fixed in the connector body 11 and is formed so as to position the optical fiber 1 coaxially with the ferrule 12 by a V groove or a circular hole.
- the other end side of the built-in fiber 12a is inserted into one end side of the first fiber guide 13, and the built-in fiber 12a and the optical fiber 1 are abutted through the refractive index matching agent 13a.
- the other end side of the first fiber guide 13 is formed to have a larger inner diameter than the one end side, and the bending restricting portion 15 can be disposed between the inner peripheral surface and the optical fiber 1.
- the second fiber guide 14 is formed so that the optical fiber 1 can be inserted, and is provided on the other end side of the connector main body 11 so as to be movable in the axial direction of the optical fiber 1.
- the second fiber guide 14 is fixed to the other end of the connector body 11 after the optical fiber 1 is inserted.
- the second fiber guide 14 is provided with a bending receiving portion 14a capable of receiving the bending portion of the optical fiber 1, and the bending receiving portion 14a is closed by a detachable lid member 14b. That is, by removing the lid member 14b, a bent portion generated by pushing the optical fiber 1 is received by the bent receiving portion 14a.
- the bending restricting portion 15 includes a cylindrical fixed guide portion 15a through which the optical fiber 1 can be inserted, and a movable guide portion 15b as a movable member including a plurality of ring-shaped members through which the optical fiber 1 can be inserted.
- the fixed guide portion 14 b is fixed to one end of the second fiber guide 14.
- the movable guide portion 15 b is disposed between the fixed guide portion 15 a and the first fiber guide 13, and the ring-shaped members of the movable guide portion 15 b are disposed at intervals S in the axial direction of the optical fiber 1. .
- this bending restricting portion 15 when the second fiber guide 14 is moved toward the connector body 11, the ring-shaped members of the movable guide portion 15b approach each other, and the overall length of the bending restricting portion 15 is shortened. It is like that.
- the fixing member 16 is provided on the other end side of the second fiber guide 14 and is formed to fix the optical fiber 1 by tightening the inserted optical fiber 1.
- the optical fiber 1 from which the coating 1b on the tip side has been removed in advance is held by the fiber holder 7, and the optical fiber 1 is held in the second fiber guide as shown in FIG. 14 is inserted.
- the optical fiber 1 inserted into the second fiber guide 14 is inserted into the first fiber guide 13 through the bending restricting portion 15 as shown in FIG. 3C, and the tip of the bare fiber 1a.
- the side is abutted against the built-in fiber 12a through the refractive index matching agent 13a.
- the fiber holder 7 contacts the fixing member 16 when the optical fiber 1 is inserted.
- the fixed member 16, the fiber guide 14, and the movable guide portion 15b are integrated, when the optical fiber 1 is inserted, they are pushed by the fiber holder 7 toward the inside of the connector. At that time, an insertion allowance L of a predetermined length is secured between the first fiber guide 13 and the second fiber guide 14 by the movable guide portion 15b of the bending restriction portion 15, and the bending restriction portion 15 is movable. While the guide portion 15b is shortened in the insertion direction of the optical fiber 1, the bending of the optical fiber 1 is restricted by the fixed guide portion 15a and the movable guide portion 15b.
- the cover member 14b is removed from the second fiber guide 14 as shown in FIG. Further, the optical fiber 1 is pushed into the connector main body 11 to fix the second fiber guide 14 to the connector main body 11, and the rear end side of the optical fiber 1 is fixed by the fixing member 16. As a result, a bent portion 1c is formed in the optical fiber 1 in the second fiber guide 14. This bent portion 1c is received in the bent receiving portion 14a, and the end face of the optical fiber 1 is built in by the restoring force of the bent portion 1c. It is pressed against the end face of the fiber 12a.
- the maximum insertion force is about 8.4 N
- the insertion allowance L is 10 mm, which is the limit of the conventional structure that does not have the deflection regulating portion 15 of the present invention. Both the insertion force and the insertion allowance can be made larger than the values (insertion force 2.7 N, insertion allowance 2 mm).
- the bending guide 15 includes the bending restriction portion 15 that restricts the bending of the optical fiber 1 when the optical fiber 1 is inserted, and the bending guide portion 15 has a movable guide portion whose length is variable in the optical fiber insertion direction. 15b is provided, and the bending of the optical fiber 1 is restricted while the movable guide portion 15b is shortened in the insertion direction of the optical fiber 1, so that the bending of the optical fiber 1 does not occur even if the insertion allowance is lengthened.
- the insertion force of the optical fiber 1 can be increased sufficiently. Thereby, even when foreign matters such as dust enter and the insertion resistance increases, the optical fiber 1 can be reliably inserted.
- the movable guide portion 15c shown in the figure is formed of a bellows-like member disposed between the fixed guide portion 15a and the first fiber guide 13, and is formed to be extendable and contractable in the axial direction of the optical fiber 1. That is, in this bending restricting portion 15, when the second fiber guide 14 is moved to the connector body 11 side as shown in FIG. 5A, the movable guide portion 15c is moved to the optical fiber 1 as shown in FIG. The overall length of the bending restricting portion 15 is shortened.
- the movable guide portion 15d shown in the figure is formed of a coil spring-like member disposed between the fixed guide portion 15a and the first fiber guide 13, and is formed to be extendable and contractable in the axial direction of the optical fiber 1. That is, in this bending restricting portion 15, when the second fiber guide 14 is moved to the connector main body 11 side as shown in FIG. 7A, the movable guide portion 15d is moved to the optical fiber 1 as shown in FIG. The overall length of the bending restricting portion 15 is shortened.
- (Second Embodiment) 8 and 9 show a second embodiment of the present invention, which is different from the first embodiment in the configuration of the deflection regulating portion.
- symbol is attached
- the bending restricting portion 17 of the present embodiment includes a pair of plate-like fixed guide portions 17 a that guide the optical fiber 1 with V-shaped grooves, and a movable guide portion that includes a plurality of block-like members that guide the optical fiber 1. 17b.
- Each fixed guide portion 17 a is disposed on the opposite side of the optical fiber 1, one fixed guide portion 17 a is fixed to the first fiber guide 13, and the other fixed guide portion 17 a is connected to the second fiber guide 14. It is fixed.
- a plurality of movable guide portions 17b are arranged between one fixed guide portion 17a and the second fiber guide 14 and between the other fixed guide portion 17a and the first fiber guide 13, respectively.
- Each block-like member is arranged at an interval in the axial direction of the optical fiber 1.
- the bending restricting portion 17 forms each block shape of the movable guide portion 17b as shown in FIG. 9B.
- the members approach each other, and the entire length of the bending restricting portion 17 is shortened.
- the movable guide portion 17c shown in the figure is formed of a corrugated plate-like member disposed between the fixed guide portion 17a and the first fiber guide 13, and is formed to be extendable and contractable in the axial direction of the optical fiber 1. That is, in this bending restricting portion 17, when the second fiber guide 14 is moved to the connector body 11 side as shown in FIG. 11A, the movable guide portion 17c is moved to the optical fiber 1 as shown in FIG. The overall length of the bending restricting portion 17 is shortened.
- FIGS. 12 and 13 show a third embodiment of the present invention.
- An optical connector 20 shown in the figure is for connecting the optical fiber 1 to a mating connector.
- the optical connector 20 includes a connector main body 21 into which the optical fiber 1 is inserted, a ferrule 22 attached to one end of the connector main body 21, a first fiber guide 23 fixed in the connector main body 21, and a connector main body.
- a second fiber guide 24 movably provided with respect to 21, a bending restricting portion 25 for restricting the bending of the optical fiber 1 inserted into the connector main body 21, and a fixing member 26 for fixing the optical fiber 1.
- the optical fiber 1 inserted in the connector main body 21 is provided with a coating removing portion 27 for removing the coating.
- the second fiber guide 24 has a deflection receiving portion 24a and a lid member 24b.
- the bending restricting portion 25 is provided with a fixed guide portion 25a and a movable guide portion 25b.
- structures other than the coating removal part 27 are the same as 1st Embodiment, detailed description is abbreviate
- the coating removal portion 27 is provided in the first fiber guide 23 and has an insertion hole through which the bare fiber 1a can be inserted.
- the coating removing portion 27 peels off the coating 1 b of the optical fiber 1 by the insertion force of the optical fiber 1 when the tip surface of the optical fiber 1 inserted into the connector main body 21 comes into contact.
- the inner diameter of the insertion hole into which the bare fiber 1a of the coating removing portion 27 is inserted must be larger than the outer diameter of the bare fiber 1a and smaller than the outer diameter of the coated portion of the optical fiber 1. Therefore, the inner diameter of the insertion hole is, for example, 175 ⁇ m or more and 200 ⁇ m or less.
- the coated optical fiber 1 is held by the fiber holder 7 as shown in FIG. 13A, and the optical fiber 1 is inserted into the second fiber guide 24 as shown in FIG. 13B.
- the optical fiber 1 inserted into the second fiber guide 24 is inserted into the first fiber guide 23 through the bending restricting portion 25 as shown in FIG. Removed.
- the bare fiber 1a from which the coating 1b on the distal end side is removed has its distal end abutted against the built-in fiber 22a through the refractive index matching agent 23a.
- an insertion allowance L of a predetermined length is secured between the first fiber guide 23 and the second fiber guide 24 by the movable guide portion 25b of the bending restriction portion 25, and the bending restriction portion 25 is movable.
- the guide portion 25b is shortened in the insertion direction of the optical fiber 1, the bending of the optical fiber 1 is restricted by the fixed guide portion 25a and the movable guide portion 25b. Further, since the bending receiving portion 24a of the second fiber guide 24 is closed by the lid member 24b, the bending of the optical fiber 1 is not caused by the bending receiving portion 24a.
- the cover member 24b is removed from the second fiber guide 24 as shown in FIG. Further, the optical fiber 1 is pushed into the connector main body 21 to fix the second fiber guide 24 to the connector main body 21, and the rear end side of the optical fiber 1 is fixed by the fixing member 26.
- a bent portion 1c is generated in the optical fiber 1 in the second fiber guide 24.
- This bent portion 1c is received in the bent receiving portion 24a, and the end face of the optical fiber 1 is built in by the restoring force of the bent portion 1c. It is pressed against the end face of the fiber 22a.
- the average maximum covering removal force is normally defined as 5N (see, for example, IEC-60793-2-50, Optical fibres-Part 2-50: Product specifications-Sectional spec for class B single-mode). Assuming that the insertion force necessary for removing the coating in the optical connector 20 is equivalent to this, S and L 2 satisfy L 2 ⁇ 2.4 mm and S ⁇ 2.4 mm from the equation (5).
- the coated outer diameter of the optical fiber 1 is usually 235 to 265 ⁇ m, and the inner diameter of the fixed guide portion 25a needs to be at least 265 ⁇ m.
- the bending restriction portion 25 that restricts the bending of the optical fiber 1 when the optical fiber 1 is inserted is provided, and the bending guide portion 25 has a movable guide portion whose length is variable in the optical fiber insertion direction. 25b is provided, and the bending of the optical fiber 1 is restricted while the movable guide portion 25b is shortened in the insertion direction of the optical fiber 1, so that the bending of the optical fiber 1 can be performed even if the insertion allowance is increased as in the above embodiment.
- the insertion force of the optical fiber 1 can be made sufficiently large. Thereby, even when foreign matters such as dust enter and the insertion resistance increases, the optical fiber 1 can be reliably inserted.
- the coating 1 b of the optical fiber 1 can be applied using the insertion force of the optical fiber 1 into the connector body 21. Since it was removed, it is not necessary to remove the coating 1b of the optical fiber 1 separately using a dedicated tool before the optical fiber 1 is inserted, and the optical connector 20 can be assembled efficiently. At this time, even if the insertion force of the optical fiber 1 is increased in order to remove the coating 1b, the bending of the optical fiber 1 can be prevented by the bending restricting portion 25. 1b can be removed reliably. If the tip of the coating 1b of the optical fiber 1 is cut or otherwise damaged, the insertion force for removing the coating 1b can be reduced.
- the removed coating debris remains inside the connector. Since there is a limit to the space that can be accommodated in the connector for housing the covering waste, if the receiving space is filled with the covering waste, the covering cannot be removed any further. In this state, if a pressing force is applied to the optical fiber, an excessive force is applied to the fiber and the possibility of breakage is high. For this reason, it is necessary to keep the maximum removal length of the coating within a range in which the coating waste can be accommodated.
- the outer diameter of the ferrule 12 of the widely used optical connector 10 is thin and has a diameter of 1.25 mm.
- the ferrule 12 and the guide folder 15 need to be aligned. Assume that a fitting by a sleeve (cylindrical) widely used for connector alignment is used for this alignment. Since the length of the space for storing the coating waste 18 before the coating removal portion is 2.4 mm and the inner diameter of the sleeve is 1.25 mm, the volume of the coating waste storage space is 3.75 mm 3 .
- the coating is cylindrical with an outer diameter of 0.25 mm and an inner diameter of 0.125 mm, the maximum length of the coating that can be accommodated is 79.9 mm. Since the maximum removal length of the coating is equal to the maximum contraction amount of the deflection regulating portion 16, it is desirable that the contraction amount S (S ⁇ N in the case of a plurality of) is 79.9 mm or less.
- FIG. 14 to 17 show a fourth embodiment of the present invention.
- An optical connector 30 shown in the figure is for connecting the optical fiber 1 to a mating connector.
- the optical connector 30 includes a connector main body 31 into which the optical fiber 1 is inserted, a ferrule 32 attached to one end of the connector main body 31, a first fiber guide 33 fixed in the connector main body 31, and a connector main body.
- a second fiber guide 34 provided movably with respect to 31, a bending restricting portion 35 for restricting the bending of the optical fiber 1 inserted into the connector main body 31, and a fixing member 36 for fixing the optical fiber 1.
- an end surface grinding portion 37 that grinds the tip end surface of the optical fiber 1 inserted into the connector main body 31 into a taper shape, and the second fiber guide 34 has a flexure receiving portion 34a and an end surface grinding portion as in the third embodiment.
- a lid member 34b is provided, and the bending restricting portion 35 is provided with a fixed guide portion 35a and a movable guide portion 35b.
- the bending restricting portion 35 is provided with a fixed guide portion 35a and a movable guide portion 35b.
- structures other than the end surface grinding part 37 are equivalent to 3rd Embodiment, detailed description is abbreviate
- no refractive index matching agent is provided in the first fiber guide 33.
- the end surface grinding portion 37 is provided in the first fiber guide 33, and is opposed to each grinding member 37a and a plurality of grinding members 37a arranged at intervals in the insertion direction of the optical fiber 1 as shown in FIG.
- the plurality of dummy members 37b are arranged so as to have a pair of holding members 37c for holding the grinding members 37a and the dummy members 37b.
- one end of the bare fiber strand 1a is ground in a tapered shape by the grinding member 37a.
- the end surface grinding part 37 is provided with the other holding member 37c which has arrange
- tip of the bare fiber strand 1a grounded on the one side Is ground in a tapered shape over the entire circumference of the bare fiber strand 1a.
- the optical fiber 1 from which the coating 1b on the tip side has been removed in advance is held by the fiber holder 7, and the optical fiber 1 is held in the second fiber guide as shown in FIG. 34.
- the optical fiber 1 inserted into the second fiber guide 34 is inserted into the first fiber guide 33 through the bending restricting portion 35 as shown in FIG.
- the taper is ground.
- the bare fiber strand 1a whose tip surface is ground into a tapered shape has its tip end abutted against the built-in fiber 32a via the refractive index matching agent 33a.
- an insertion allowance L of a predetermined length is secured between the first fiber guide 33 and the second fiber guide 34 by the movable guide portion 35b of the bending restriction portion 35, and the bending restriction portion 35 is movable.
- the bending of the optical fiber 1 is regulated by the fixed guide portion 35a and the movable guide portion 35b while the guide portion 35b is shortened in the insertion direction of the optical fiber 1. Further, since the bending receiving portion 34a of the second fiber guide 34 is closed by the lid member 34b, the bending of the optical fiber 1 is not caused by the bending receiving portion 34a.
- the cover member 34b is removed from the second fiber guide 34 as shown in FIG.
- the optical fiber 1 is pushed into the connector body 31 to fix the second fiber guide 34 to the connector body 31 and the rear end side of the optical fiber 1 is fixed by the fixing member 36.
- a bent portion 1c is formed in the optical fiber 1 in the second fiber guide 34.
- This bent portion 1c is received in the bent receiving portion 34a, and the end face of the optical fiber 1 is built in by the restoring force of the bent portion 1c. It is pressed against the end face of the fiber 32a.
- the bending restriction portion 35 that restricts the bending of the optical fiber 1 when the optical fiber 1 is inserted is provided, and the bending guide portion 35 has a movable guide portion whose length is variable in the optical fiber insertion direction. 35b is provided, and the bending of the optical fiber 1 is restricted while the movable guide portion 35b is shortened in the insertion direction of the optical fiber 1, so that the bending of the optical fiber 1 can be performed even if the insertion allowance is increased as in the above embodiment.
- the insertion force of the optical fiber 1 can be made sufficiently large. Thereby, even when foreign matters such as dust enter and the insertion resistance increases, the optical fiber 1 can be reliably inserted.
- the distal end of the optical fiber 1 is utilized by using the insertion force of the optical fiber 1 into the connector body 31. Since the surface is ground, there is no need to separately grind the front end surface of the optical fiber 1 using a dedicated tool before the optical fiber 1 is inserted, and the assembly work of the optical connector 30 can be performed efficiently. it can. At that time, even if the insertion force of the optical fiber 1 is increased in order to grind the tip surface, the bending of the optical fiber 1 can be prevented by the bending restricting portion 35, and therefore the end of the optical fiber 1 by the end surface grinding portion 37. The surface can be reliably ground.
- FIG. 18 and 19 show a fifth embodiment of the present invention.
- An optical connector 40 shown in the figure is for connecting the optical fiber 1 to a mating connector.
- the optical connector 40 includes a connector main body 41 into which the optical fiber 1 is inserted, a ferrule 42 attached to one end side of the connector main body 41, a first fiber guide 43 fixed in the connector main body 41, a connector main body.
- a second fiber guide 44 movably provided with respect to 41, a bending restricting portion 45 for restricting the bending of the optical fiber 1 inserted into the connector main body 41, and a fixing member 46 for fixing the optical fiber 1. It has.
- the connector body 41 is formed so that, for example, the optical fiber 1 having an outer diameter of the bare fiber 1a of 125 ⁇ m and an outer diameter of the covering 1b of 250 ⁇ m is inserted and can be fitted to the mating connector.
- the ferrule 42 has a hole having an inner diameter substantially equal to the outer diameter of the bare fiber 1a from which the coating has been removed at the center in the radial direction, and the bare fiber 1a is held in this hole.
- the first fiber guide 43 is fixed in the connector main body 41 and is formed so as to position the optical fiber 1 coaxially with the ferrule 42 by a V groove or a circular hole.
- the second fiber guide 44 is formed so that the optical fiber 1 can be inserted, and is provided on the other end side of the connector main body 41 so as to be movable in the axial direction of the optical fiber 1. Further, the second fiber guide 44 is fixed to the other end of the connector main body 41 after the optical fiber 1 is inserted.
- a bending receiving portion 44a capable of receiving a bending portion of the optical fiber 1 is provided, and the bending receiving portion 44a is closed by a detachable lid member 44b. That is, the lid member 44b is removed when the optical connector 10 is connected to the mating connector, and a bent portion generated by pushing the optical fiber 1 when the connector is connected is received by the bent receiving portion 44a.
- the bending restricting portion 45 includes a cylindrical fixed guide portion 45a through which the optical fiber 1 can be inserted, and a movable guide portion 45b as a movable member including a plurality of ring-shaped members through which the optical fiber 1 can be inserted.
- the fixed guide portion 45 a is fixed to one end of the second fiber guide 44.
- the movable guide portion 45 b is disposed between the fixed guide portion 45 a and the first fiber guide 43, and the ring-shaped members of the movable guide portion 45 b are disposed at intervals from each other in the axial direction of the optical fiber 1.
- the fixing member 45 is provided on the other end side of the second fiber guide 44 and is formed so as to fix the optical fiber 1 by tightening the inserted optical fiber 1.
- the optical fiber 1 from which the coating 1b on the front end side has been removed is held by the fiber holder 7, and the optical fiber 1 is inserted into the second fiber guide 44 as shown in FIG.
- the optical fiber 1 inserted into the second fiber guide 44 is inserted into the first fiber guide 43 through the bending restricting portion 45.
- an insertion allowance L of a predetermined length is secured between the first fiber guide 43 and the second fiber guide 44 by the movable guide portion 45b of the bending restriction portion 45, and the bending restriction portion 45 is movable.
- the bending of the optical fiber 1 is regulated by the fixed guide portion 45a and the movable guide portion 45b while the guide portion 45b is shortened in the insertion direction of the optical fiber 1.
- the bare fiber 1 a is inserted into the ferrule 42 and protrudes from the tip of the ferrule 42 to the outside. At that time, the bare fiber 1a is brought into contact with a contact plate 47 disposed outside the ferrule 42 by the tip of the bare fiber 1a, thereby restricting the bare fiber 1a to a predetermined protruding length.
- the fiber guide 44 is fixed to the connector main body 41 and the rear end side of the optical fiber 1 is fixed by the fixing member 46.
- the cover member 44b When connecting the optical connector 40 assembled as described above to the mating connector, the cover member 44b is removed from the second fiber guide 44, and the ferrule 42 is used as the ferrule of the mating connector as shown in FIG. 42 'and the refractive index matching agent 48 are abutted. At that time, the optical fiber 1 is pushed into the connector main body 41 by the fitting pressure with the mating connector. However, since the rear end side of the optical fiber 1 is fixed by the fixing member 46, A bent portion 1c is formed in the optical fiber 1 of FIG. The bending portion 1c is received in the bending receiving portion 44a, and the fiber end surface is pressed against the fiber end surface of the mating connector by the restoring force of the bending portion 1c. The fiber end faces are aligned by the ferrule 42 so that the core center coincides with the core center of the counterpart fiber, and the fiber end faces are brought into close contact with each other by the restoring force of the bending portion 1c. .
- the bending restricting portion 45 that restricts the bending of the optical fiber 1 when the optical fiber 1 is inserted is provided, and the movable guiding portion whose length is variable in the optical fiber insertion direction is provided in the bending restricting portion 45. 45b is provided, and the bending of the optical fiber 1 is restricted while the movable guide 45b is shortened in the insertion direction of the optical fiber 1, so that the bending of the optical fiber 1 can be performed even if the insertion allowance is increased, as in the above embodiment.
- the insertion force of the optical fiber 1 can be made sufficiently large. Thereby, even when foreign matters such as dust enter and the insertion resistance increases, the optical fiber 1 can be reliably inserted.
- the end face grinding portion similar to that of the fourth embodiment may be provided, so that the tip end face of the optical fiber 1 may be ground using the insertion force of the optical fiber 1.
- FIG. 20 and 21 show a sixth embodiment of the present invention.
- An optical connector 50 shown in FIG. 20 is for connecting the optical fiber 1 to a mating connector.
- the optical connector 50 includes a connector main body 51 into which the optical fiber 1 is inserted, a ferrule 52 attached to one end of the connector main body 51, a first fiber guide 53 fixed in the connector main body 51, and a connector main body.
- a second fiber guide 54 provided movably with respect to 51, a bending restricting portion 55 for restricting the bending of the optical fiber 1 inserted into the connector main body 51, and a fixing member 56 for fixing the optical fiber 1.
- a coating removal portion 57 for removing the coating of the optical fiber 1 inserted into the connector main body 51, the second fiber guide 54 is provided with a deflection receiving portion 54 a and a lid member 54 b, A fixed guide portion 55a and a movable guide portion 55b are provided.
- the coated optical fiber 1 is held by the fiber holder 7, and the optical fiber 1 is inserted into the second fiber guide 54 as shown in FIG.
- the optical fiber 1 inserted into the second fiber guide 54 is inserted into the first fiber guide 53 through the bending restricting portion 55.
- an insertion allowance L of a predetermined length is secured between the first fiber guide 53 and the second fiber guide 54 by the movable guide portion 55 b of the bending restriction portion 55, and the bending restriction portion 55 is movable.
- the bending of the optical fiber 1 is regulated by the movable guide portion 55b while the guide portion 55b is shortened in the insertion direction of the optical fiber 1.
- the optical fiber 1 is removed from the coating 1 b on the distal end side by the coating removing unit 57, and the bare fiber 1 a from which the coating 1 b on the distal end side is removed is provided in the ferrule 52. And protrudes from the tip of the ferrule 52 to the outside. At that time, the bare fiber 1a is brought into contact with a contact plate 58 disposed outside the ferrule 52 to thereby restrict the bare fiber 1a to a predetermined protruding length.
- the fiber guide 54 is fixed to the connector main body 51, and the rear end side of the optical fiber 1 is fixed by a fixing member 56.
- the lid member 54b is removed from the second fiber guide 54, and the ferrule 52 is replaced with the ferrule of the mating connector as shown in FIG. 52 'is matched with the refractive index matching agent 59.
- the optical fiber 1 is pushed into the connector main body 11 by the fitting pressure with the mating connector, but the rear end side of the optical fiber 1 is fixed by the fixing member 56, so that the second fiber guide 54 A bent portion 1c is formed in the optical fiber 1 of FIG.
- the bent portion 1c is received in the bent receiving portion 54a, and the fiber end surface is pressed against the fiber end surface of the mating connector by the restoring force of the bent portion 1c.
- the fiber end faces are aligned by the ferrule 52 so that the core center coincides with the core center of the counterpart fiber, and the fiber end faces are brought into close contact with each other by the restoring force of the bending portion 1c. .
- the bending restriction portion 55 that restricts the bending of the optical fiber 1 when the optical fiber 1 is inserted is provided, and the bending guide portion 55 has a movable guide portion whose length is variable in the optical fiber insertion direction. 55b is provided, and the bending of the optical fiber 1 is restricted while the movable guide portion 55b is shortened in the insertion direction of the optical fiber 1, so that the bending of the optical fiber 1 can be performed even if the insertion allowance is increased as in the above embodiment.
- the insertion force of the optical fiber 1 can be made sufficiently large. Thereby, even when foreign matters such as dust enter and the insertion resistance increases, the optical fiber 1 can be reliably inserted.
- the coating 1 b of the optical fiber 1 can be applied using the insertion force of the optical fiber 1 into the connector body 51. Since it is removed, it is not necessary to remove the coating 1b of the optical fiber 1 separately using a dedicated tool before inserting the optical fiber 1, and the assembly work of the optical connector 50 can be performed efficiently. At this time, even if the insertion force of the optical fiber 1 is increased in order to remove the coating 1b, the bending of the optical fiber 1 can be prevented by the bending restricting portion 55. 1b can be removed reliably. If the tip of the coating 1b of the optical fiber 1 is cut or otherwise damaged, the insertion force for removing the coating 1b can be reduced.
- the pressing force is applied to the fiber end surface by the restoring force of the bending portion 1c.
- the bending portion 1c may be omitted. Good.
- FIGS. 22 to 27 show a seventh embodiment of the present invention.
- An optical connector 10 shown in the figure is for connecting the optical fiber 1 to a mating connector.
- the optical connector 10 includes a connector main body 11 into which the optical fiber 1 is inserted, a ferrule 12 attached to one end side of the connector main body 11, a first fiber guide 13 fixed in the connector main body 11, and a first A second fiber guide 14 movably provided with respect to the fiber guide 13, a fixing member 15 for fixing the optical fiber 1, and a coating removal for removing the coating of the optical fiber 1 inserted into the connector main body 11.
- a portion 16 and an end surface grinding portion 17 that grinds the tip end surface of the optical fiber 1 inserted into the connector main body 11 into a taper shape.
- the connector body 11 is formed so that, for example, the optical fiber 1 having an outer diameter of the bare fiber 1a of 125 ⁇ m and an outer diameter of the covering 1b of 250 ⁇ m is inserted and can be fitted to the mating connector.
- the ferrule 12 has a hole having an inner diameter substantially equal to the outer diameter of the bare fiber strand 1a from which the coating has been removed at the center in the radial direction, and holds the bare fiber strand 1a inserted into the hole. .
- the first fiber guide 13 is fixed in the connector body 11 and is formed so as to position the optical fiber 1 coaxially with the ferrule 12 by a V groove or a circular hole on one end side.
- the other end side of the first fiber guide 13 has a larger inner diameter than the one end side, and a second fiber guide 14 is movably disposed therein.
- the second fiber guide 14 is formed so that the optical fiber 1 can be inserted, and is provided on the other end side of the first fiber guide 13 so as to be movable in the axial direction of the optical fiber 1.
- the second fiber guide 14 is a bending restricting portion including a pair of plate-like fixed guide portions 14 a that guide the optical fiber 1 with V-shaped grooves and a pair of corrugated plate-like members that guide the optical fiber 1.
- the movable guide portion 14b Each fixed guide portion 14 a is disposed on the opposite side of the optical fiber 1, one fixed guide portion 14 a is disposed in the first fiber guide 13, and the other fixed guide portion 14 a is the second fiber guide 14. It is fixed to.
- Each movable guide portion 14b is disposed between one fixed guide portion 14a and the fixed member 15, and between the other fixed guide portion 14a and the first fiber guide 13, and each movable guide portion 14b is connected to the optical fiber 1. It is formed so that it can expand and contract in the axial direction. That is, when the second fiber guide 14 is moved to the connector main body 11 side, the movable guide portion 14b contracts to shorten the length in the optical fiber insertion direction. Further, a bending receiving portion 14c capable of receiving the bending portion of the optical fiber 1 is provided in the second fiber guide 14, and the bending receiving portion 14c is closed by a detachable lid member 14d. That is, by removing the lid member 14d, a bent portion generated by pushing the optical fiber 1 is received by the bent receiving portion 14c. The second fiber guide 14 is fixed to the other end of the connector body 11 after the optical fiber 1 is inserted.
- the fixing member 15 is provided on the other end side of the second fiber guide 14 and is formed so as to fix the optical fiber 1 by tightening the inserted optical fiber 1.
- the coating removal portion 16 is provided on the base end side of the ferrule 12 and is made of a conical member having an insertion hole through which the bare fiber 1a can be inserted.
- the sheath 1b of the optical fiber 1 is peeled off while being opened by the insertion force of the optical fiber 1, and the bare fiber 1a is removed.
- the ferrule 12 is inserted.
- the inner diameter of the insertion hole into which the bare fiber strand 1a of the sheath removing portion 16 is inserted must be larger than the outer diameter of the bare fiber strand 1a and smaller than the outer diameter of the coated portion of the optical fiber 1.
- the inner diameter of the insertion hole is, for example, 175 ⁇ m or more and 200 ⁇ m or less.
- the contact surface with the optical fiber 1 in the coating removal portion 16 may be formed perpendicular to the axial direction of the optical fiber 1.
- the end surface grinding part 17 is provided in the ferrule 12, and as shown in FIG. 24, a plurality of grinding members 17a arranged at intervals in the insertion direction of the optical fiber 1 and the grinding members 17a are arranged to face each other.
- one end of the bare fiber strand 1a is ground in a tapered shape by the grinding member 17a.
- the end surface grinding part 17 is provided with the other holding member 17c which has arrange
- the coated optical fiber 1 is held by the fiber holder 7 and inserted into the second fiber guide 14.
- the optical fiber 1 inserted into the second fiber guide 14 is guided by the first and second fiber guides 13 and 14 as shown in FIG.
- the coating 1b is removed by the portion 16.
- the bare fiber 1a from which the coating 1b has been removed is inserted into the ferrule 12, and after the end surface grinding portion 17 in the ferrule 12 is ground into a tapered shape as shown in FIG. 26 (c).
- FIG. 27A the ferrule 12 protrudes outward from the tip.
- the second fiber guide 14 has a predetermined insertion length L corresponding to the contraction amount of the movable guide portion 14b, and the movable guide portion 14b is shortened in the insertion direction of the optical fiber 1 while being shortened in the optical fiber. 1 is controlled. At this time, since the bending receiving portion 14c of the second fiber guide 14 is closed by the lid member 14d, the optical fiber 1 in the second fiber guide 14 is not bent. Then, the second fiber guide 14 is fixed to the connector main body 11 and the rear end side of the optical fiber 1 is fixed by the fixing member 15.
- the lid member 14d is removed from the second fiber guide 14, and the ferrule 12 is moved to the ferrule of the mating connector as shown in FIG. Match with 12 '.
- the optical fiber 1 is pushed into the connector main body 11 by the fitting pressure with the mating connector.
- a bent portion 1c is formed in the optical fiber 1 of FIG.
- the bending portion 1c is received in the bending receiving portion 14c, and the fiber end surface is pressed against the fiber end surface of the mating connector by the restoring force of the bending portion 1c.
- the corner portion of the tip surface of the optical fiber 1 is cut off, the area of the butted end surface is reduced, and the pressure necessary for optical connection can be sufficiently obtained.
- the fiber end faces are aligned by the ferrule 12 so that the core center coincides with the core center of the counterpart fiber, and the fiber end faces are brought into close contact with each other by the restoring force of the bending portion 1c. .
- the coating removal unit 16 that removes the coating 1b of the optical fiber 1 by the insertion force of the optical fiber 1 into the connector main body 11 is provided. It is not necessary to remove the coating 1b of the optical fiber 1 separately using a tool, and the assembly work of the optical connector 10 can be performed efficiently.
- the end surface grinding part 17 which grinds the corner
- the second fiber guide 14 is provided with a movable guide portion 14b having a variable length in the optical fiber insertion direction, and the movable guide portion 14b is restricted in the optical fiber 1 insertion direction so as to restrict the bending of the optical fiber 1. Therefore, even if the insertion allowance is increased, the optical fiber 1 is not bent, and the insertion force of the optical fiber 1 can be sufficiently increased. Thereby, even when foreign matters such as dust enter and the insertion resistance increases, the optical fiber 1 can be reliably inserted.
- the movable guide unit 14b can prevent the optical fiber 1 from being bent, so that the coating removal and the end surface grinding can be reliably performed. Can be done. If the tip of the coating 1b of the optical fiber 1 is cut or otherwise damaged, the insertion force for removing the coating 1b can be reduced.
- the optical fiber 1 is pressed toward the distal end side by the restoring force of the bent portion 1c of the optical fiber 1 bent in the connector main body 11, the end face of the optical fiber 1 is brought into close contact with the end face of the mating connector. Therefore, it can be reliably connected to the mating connector so that light can pass therethrough.
- the movable guide portion 14b is formed of a corrugated plate-like member.
- FIG. 28 to 30 show an eighth embodiment of the present invention.
- An optical connector 20 shown in the figure is for connecting the optical fiber 1 to a mating connector.
- the optical connector 20 includes a connector body 21 into which the optical fiber 1 is inserted, a ferrule 22 attached to one end side of the connector body 21, a first fiber guide 23 fixed in the connector body 21, and a first A second fiber guide 24 movably provided with respect to the fiber guide 23, a pressing member 25 that presses the first fiber guide 23 toward one end of the connector body 21, and the optical fiber 1 as the second fiber guide 23.
- an end surface grinding part 28 that grinds into a shape.
- the second fiber guide 24 includes a fixed guide part 24a and a movable guide part. 4b are provided. In this case, the second fiber guide 24 is not provided with a deflection receiving portion and a lid member. Since the configuration other than the first fiber guide 23 and the pressing member 25 is the same as that of the seventh embodiment, detailed description thereof is omitted.
- the first fiber guide 23 is provided in the connector main body 21 so as to be movable in the axial direction, and is formed so as to position the optical fiber 1 coaxially with the ferrule 12 by a V groove or a circular hole on one end side.
- the other end side of the first fiber guide 23 has a larger inner diameter than the one end side, and a second fiber guide 24 is movably disposed therein.
- a flange-shaped locking portion 23 a that locks the pressing member 25 is provided at one end of the first fiber guide 23.
- the pressing member 25 is made of a spring material as an elastic member bent in a waveform, and is disposed between the inner peripheral surface of the connector main body 21 and the outer peripheral surface of the first fiber guide 23. In this case, the pressing member 25 is provided in a compressed state between the other end portion of the connector main body 21 and the locking portion 23 a of the first fiber guide 23, and the first fiber guide 23 is placed on one end side of the connector main body 21. It is energizing towards.
- the coated optical fiber 1 is held by the fiber holder 7 and inserted into the second fiber guide 24.
- the optical fiber 1 inserted into the second fiber guide 24 is guided by the first and second fiber guides 23 and 24 as shown in FIG.
- the coating 1b is removed by the portion 27.
- the bare fiber 1a from which the coating 1b has been removed is inserted into the ferrule 22, and after the end surface grinding portion 28 in the ferrule 22 is ground into a tapered shape as shown in FIG. 29 (c).
- FIG. 30 (a) the ferrule 22 protrudes outward from the tip.
- the second fiber guide 24 has a predetermined insertion length L corresponding to the contraction amount of the movable guide portion 24b, and the movable guide portion 24b is shortened in the insertion direction of the optical fiber 1 while being shortened in the optical fiber. 1 is controlled.
- the fixing member 26 is fixed to the first fiber guide 23 and the rear end side of the optical fiber 1 is fixed by the fixing member 26.
- the optical fiber 1, the first fiber guide 23, the second fiber guide 24, and the fixing member 26 are integrated, and are movable in the axial direction of the optical fiber 1 with respect to the connector main body 21.
- the ferrule 22 When connecting the optical connector 20 assembled as described above to the mating connector, the ferrule 22 is abutted with the ferrule 22 'of the mating connector as shown in FIG. At that time, the optical fiber 1 is pushed into the connector main body 21 due to the fitting pressure with the mating connector. However, since the rear end side of the optical fiber 1 is fixed by the fixing member 26, the optical fiber 1, The fiber guide 23, the second fiber guide 24, and the fixing member 26 are retracted against the urging force of the pressing member 25, and the fiber end surface is pressed against the fiber end surface of the mating connector by the pressing force of the pressing member 25.
- the corner portion of the tip surface of the optical fiber 1 is cut off, the area of the butted end surface is reduced, and the pressure necessary for optical connection can be sufficiently obtained.
- the fiber end faces are aligned by the ferrule 22 so that the core center coincides with the core center of the counterpart fiber, and the fiber end faces are brought into close contact with each other by the pressing force of the pressing member 25, so that signal light can pass through each other. .
- the coating removal of the optical fiber 1 and the end surface grinding process can be performed by the insertion force of the optical fiber 1 into the connector main body 21, and the second embodiment.
- the bending of the optical fiber 1 can be restricted by the movable guide portion 24 b of the fiber guide 24.
- positioned in the connector main body 21 was pressed to the front end side with the elastic force of the press member 25, the end surface of the optical fiber 1 was made into the end surface of the other party connector. It can be made to adhere and can be securely connected to the mating connector so that light can pass therethrough.
- FIGS. 31 to 33 show a ninth embodiment of the present invention.
- An optical connector 30 shown in FIG. 31 is for connecting the optical fiber 1 to a mating connector.
- the optical connector 30 includes a connector body 31 into which the optical fiber 1 is inserted, a ferrule 32 attached to one end side of the connector body 31, a first fiber guide 33 fixed in the connector body 31, a first A second fiber guide 34 movably provided with respect to the fiber guide 33, a fixing member 35 for fixing the optical fiber 1, and a coating removal for removing the coating of the optical fiber 1 inserted into the connector main body 31.
- Part 36 and an end face grinding part 37 for grinding the tip end face of the optical fiber 1 inserted into the connector main body 31 into a taper shape, and fixed to the second fiber guide 34 as in the seventh embodiment.
- a guide portion 34a, a movable guide portion 34b, a deflection receiving portion 34c, and a lid member 34d are provided.
- This embodiment is different from the seventh embodiment in that an end surface grinding portion 37 is provided on one end side of the first fiber guide 33. Since the other configuration is the same as that of the seventh embodiment, detailed description is omitted.
- the coated optical fiber 1 is held by the fiber holder 7 and inserted into the second fiber guide 34.
- the optical fiber 1 inserted into the second fiber guide 34 is guided by the first and second fiber guides 33 and 34 as shown in FIG.
- the taper is ground.
- the bare fiber 1a with the tip end ground is inserted into the ferrule 32 after the coating 1b is removed by the coating removing portion 36 as shown in FIG. 32 (c), and as shown in FIG. 33 (a).
- the ferrule 32 protrudes outward from the tip.
- the end of the bare fiber 1a is brought into contact with a contact plate (not shown) arranged outside the ferrule 32 so that the bare fiber 1a is regulated to a predetermined protruding length.
- the second fiber guide 34 has a predetermined insertion length L corresponding to the contraction amount of the movable guide portion 34b, and the movable guide portion 34b is shortened in the insertion direction of the optical fiber 1 while being shortened in the optical fiber. 1 is controlled. At that time, since the bending receiving portion 34c of the second fiber guide 34 is closed by the lid member 34d, the optical fiber 1 in the second fiber guide 34 is not bent. Then, the second fiber guide 34 is fixed to the connector main body 31 and the rear end side of the optical fiber 1 is fixed by the fixing member 35.
- the lid member 34d is removed from the second fiber guide 34, and the ferrule 32 is moved to the ferrule of the mating connector as shown in FIG. Match 32 '.
- the optical fiber 1 is pushed into the connector main body 31 by the fitting pressure with the mating connector.
- a bent portion 1c is formed in the optical fiber 1 of FIG.
- the bending portion 1c is received in the bending receiving portion 34c, and the fiber end surface is pressed against the fiber end surface of the mating connector by the restoring force of the bending portion 1c.
- the corner portion of the tip surface of the optical fiber 1 is cut off, the area of the butted end surface is reduced, and the pressure necessary for optical connection can be sufficiently obtained.
- the fiber end faces are aligned by the ferrule 32 so that the core center coincides with the core center of the counterpart fiber, and the fiber end faces are brought into close contact with each other by the restoring force of the bending portion 1c. .
- the coating removal of the optical fiber 1 and the end surface grinding process can be performed by the insertion force of the optical fiber 1 into the connector main body 31, and the second embodiment.
- the bending of the optical fiber 1 can be regulated by the movable guide part 34b of the fiber guide 34.
- (10th Embodiment) 34 and 35 show a tenth embodiment of the present invention.
- An optical connector 40 shown in the figure is for connecting the optical fiber 1 to a mating connector.
- the optical connector 40 includes a connector main body 41 into which the optical fiber 1 is inserted, a ferrule 42 attached to one end side of the connector main body 41, a first fiber guide 43 fixed in the connector main body 41, a first A second fiber guide 44 movably provided to the fiber guide 43, a fixing member 45 for fixing the optical fiber 1, and a coating removal for removing the coating of the optical fiber 1 inserted into the connector main body 41.
- Part 46 and an end face grinding part 47 for grinding the tip end face of the optical fiber 1 inserted into the connector main body 41 into a taper shape, and fixed to the second fiber guide 44 as in the seventh embodiment.
- a guide portion 44a, a movable guide portion 44b, a deflection receiving portion 44c, and a lid member 44d are provided.
- This embodiment is different from the ninth embodiment in that an end surface grinding portion 46 is provided in the ferrule 42. Since the configuration other than the ferrule 42 is the same as that of the ninth embodiment, detailed description thereof is omitted.
- the ferrule 42 has a hole having an inner diameter substantially equal to the outer diameter of the bare fiber strand 1a from which the coating has been removed at the center in the radial direction on one end side, and holds the bare fiber strand 1a inserted into the hole. It has become.
- the other end side of the ferrule 42 is formed so as to have an inner diameter larger than that of the one end side, and an end face grinding portion 47 is provided on a step surface with the fiber insertion hole on one end side. In this case, an extended portion 43 a extending from the first fiber guide 43 is inserted on the other end side of the ferrule 42.
- the coated optical fiber 1 is held by the fiber holder 7 and inserted into the second fiber guide 44.
- the optical fiber 1 inserted into the second fiber guide 44 is guided by the first and second fiber guides 43 and 44 as shown in FIG.
- the taper is ground.
- the bare fiber 1a having the ground end surface is inserted into the ferrule 42 as shown in FIG. 35 (c), and after the covering 1b is removed by the covering removing portion 46, the bare fiber 1a protrudes from the tip of the ferrule 42 to the outside. To do.
- the second fiber guide 44 has an insertion allowance L of a predetermined length corresponding to the contraction amount of the movable guide portion 44b, and the movable guide portion 44b is shortened in the insertion direction of the optical fiber 1 while being shortened in the optical fiber. 1 is controlled.
- the bending receiving portion 44c of the second fiber guide 44 is closed by the lid member 44d, the optical fiber 1 in the second fiber guide 44 is not bent. Then, the second fiber guide 44 is fixed to the connector main body 41 and the rear end side of the optical fiber 1 is fixed by the fixing member 45.
- the lid member 44d is removed from the second fiber guide 44, and the ferrule 42 is moved to the ferrule of the mating connector as shown in FIG. Match 42 '.
- the optical fiber 1 is pushed into the connector main body 41 by the fitting pressure with the mating connector, but the rear end side of the optical fiber 1 is fixed by the fixing member 45, so that the second fiber guide 44 A bent portion 1c is formed in the optical fiber 1 of FIG.
- the bent portion 1c is received in the bent receiving portion 44c, and the fiber end surface is pressed against the fiber end surface of the mating connector by the restoring force of the bent portion 1c.
- the corner portion of the tip surface of the optical fiber 1 is cut off, the area of the butted end surface is reduced, and the pressure necessary for optical connection can be sufficiently obtained.
- the fiber end faces are aligned by the ferrule 42 so that the core center coincides with the core center of the counterpart fiber, and the fiber end faces are brought into close contact with each other by the restoring force of the bending portion 1c. .
- the coating removal of the optical fiber 1 and the end surface grinding treatment can be performed by the insertion force of the optical fiber 1 into the connector body 41, and the second embodiment.
- the bending of the optical fiber 1 can be restricted by the movable guide portion 44 b of the fiber guide 44.
- the optical fiber 1 is pressed toward the distal end side by the restoring force of the bending portion 1c of the optical fiber 1; Similarly, the optical fiber 1 may be pressed by a pressing member.
- the optical connector 10 includes a connector main body 11 into which the optical fiber 1 is inserted, a ferrule 12 attached to one end side of the connector main body 11, and a first fiber guide 13 fixed to one end side in the connector main body 11.
- the second fiber guide 14 provided movably with respect to the connector body 11, the guide holder 15 provided on the other end side in the connector body 11, and the optical fiber 1 inserted into the connector body 11.
- a bending restricting portion 16 for restricting the bending, a fixing member 17 for fixing the optical fiber 1, and a covering removing portion 18 for removing the covering of the optical fiber 1 inserted into the connector main body 11 are provided.
- the connector body 11 is formed so that, for example, the optical fiber 1 having an outer diameter of the bare fiber 1a of 125 ⁇ m and an outer diameter of the covering 1b of 250 ⁇ m is inserted and can be fitted to the mating connector.
- the ferrule 12 has a hole having an inner diameter substantially equal to the outer diameter of the bare fiber 1a from which the coating has been removed at the center in the radial direction, and the built-in fiber 12a is inserted into the hole.
- the built-in fiber 12a has one end surface disposed on the tip surface of the ferrule 12, and the end surface is polished so as to be a smooth surface capable of transmitting light to the optical fiber of the mating connector.
- the other end of the built-in fiber 12 a protrudes from the end face of the ferrule 12 into the first fiber guide 13.
- the first fiber guide 13 is fixed in the connector body 11 and is formed so as to position the optical fiber 1 coaxially with the ferrule 12 by a V groove or a circular hole.
- the other end side of the built-in fiber 12a is inserted into one end side of the first fiber guide 13, and the built-in fiber 12a and the optical fiber 1 are abutted through the refractive index matching agent 13a.
- the second fiber guide 14 is formed so that the optical fiber 1 can be inserted, and is provided on the other end side of the connector main body 11 so as to be movable in the axial direction of the optical fiber 1.
- the second fiber guide 14 is fixed to the other end of the connector body 11 after the optical fiber 1 is inserted.
- the second fiber guide 14 is provided with a bending receiving portion 14a capable of receiving the bending portion of the optical fiber 1, and the bending receiving portion 14a is closed by a detachable lid member 14b. That is, by removing the lid member 14b, a bent portion generated by pushing the optical fiber 1 is received by the bent receiving portion 14a.
- a guide portion 14c extending in the axial direction of the optical fiber 1 is provided on one end side of the second fiber guide 14, and the tip of the guide portion 14c is formed in a tapered shape.
- the guide portion 14c is configured to insert the optical fiber 1 into the circular hole 14d as shown in FIG.
- the guide holder 15 is formed of a cylindrical member having a hole through which the optical fiber 1 can be inserted on one end side, and a guide portion 14c of the second fiber guide 14 is inserted on the other end side so as to be movable in the axial direction. .
- the bending restricting portion 16 is made of an elastic member such as rubber, and is formed so that the optical fiber 1 can be inserted into the central portion thereof.
- the bending restricting portion 16 is disposed on one end side in the guide holder 15, and when the guide portion 14 c of the second fiber guide 14 abuts, the length is shortened by contracting in the axial direction of the optical fiber 1. Yes.
- the end surface of the fiber insertion hole of the bending restricting portion 16 has a tapered inner periphery, and when the tip of the guide portion 14c comes into contact with the end surface, the end surface of the guide portion 14c is pushed outward in the radial direction. The bending restricting portion 16 is compressed.
- the fixing member 17 is provided on the other end side of the second fiber guide 14 and is formed to fix the optical fiber 1 by tightening the inserted optical fiber 1.
- the coating removal portion 18 is provided at one end of the first fiber guide 13 and is made of a conical member having an insertion hole through which the bare fiber 1a can be inserted.
- the sheath 1b of the optical fiber 1 is peeled off by the insertion force of the optical fiber 1, and the bare fiber 1a is peeled off.
- the first fiber guide 13 is inserted into the first fiber guide 13.
- the inner diameter of the insertion hole into which the bare fiber strand 1a of the sheath removing portion 18 is inserted must be larger than the outer diameter of the bare fiber strand 1a and smaller than the outer diameter of the coated portion of the optical fiber 1.
- the inner diameter of the insertion hole is, for example, 175 ⁇ m or more and 200 ⁇ m or less.
- the contact surface of the coating removing portion 18 with the optical fiber 1 may be formed perpendicular to the axial direction of the optical fiber 1.
- the coated optical fiber 1 is held by the fiber holder 7 as shown in FIG. 38 (a), and the optical fiber 1 is inserted into the second fiber guide 14 as shown in FIG. 38 (b).
- the optical fiber 1 inserted into the second fiber guide 14 is inserted into the first fiber guide 13 through the guide portion 14c and the deflection regulating portion 16 of the second fiber guide 14 as shown in FIG.
- the coating 1b is removed by the coating removing unit 18.
- the fiber holder 7 comes into contact with the fixing member 17. Since the fixing member 17 and the second fiber guide 14 are integrated, when the optical fiber 1 is inserted, they are pushed toward the inside of the connector.
- the bare fiber 1a from which the coating 1b on the tip side has been removed is abutted with the built-in fiber 12a via the refractive index matching agent 13a.
- the guide portion 14c of the second fiber guide 14 has an insertion allowance L of a predetermined length secured by the bend restricting portion 16, and the bend restricting portion 16 contracts in the insertion direction of the optical fiber 1 while the optical fiber 1 is contracted. 1 is controlled. Further, since the bending receiving portion 14a of the second fiber guide 14 is closed by the lid member 14b, the bending of the optical fiber 1 is not caused by the bending receiving portion 14a.
- the cover member 14b is removed from the second fiber guide 14 as shown in FIG. Further, the optical fiber 1 is pushed into the connector main body 11 to fix the second fiber guide 14 to the connector main body 11, and the rear end side of the optical fiber 1 is fixed by the fixing member 17. As a result, a bent portion 1c is formed in the optical fiber 1 in the second fiber guide 14. This bent portion 1c is received in the bent receiving portion 14a, and the end face of the optical fiber 1 is built in by the restoring force of the bent portion 1c. It is pressed against the end face of the fiber 12a.
- the average of the maximum covering removal force is defined as 5N (see, for example, IEC-60793-2-50, Optical fibres / Part 2-50: Product specifications / Sectional spec for class B single-mode). Assuming that the insertion force required for removing the coating in the optical connector 10 is equivalent to this, S and L 2 satisfy L 2 ⁇ 2.4 mm and S ⁇ 2.4 mm from the equation (9).
- the contraction amount S of the deflection restricting portion 16 (S ⁇ N in the case of a plurality) is obtained from the equation (8). If it is 1.1 mm or more, it can be inserted with an insertion force of 5 N or more at the required insertion allowance, and an insertion force sufficient for removing the coating can be obtained.
- the bending restriction portion 16 that restricts the bending of the optical fiber 1 when the optical fiber 1 is inserted is provided, and the bending restriction portion 16 is formed so as to be elastically deformable in the optical fiber insertion direction. Since the restricting portion 16 restricts the bending of the optical fiber 1 while contracting in the insertion direction of the optical fiber 1, the bending of the optical fiber 1 does not occur even if the insertion allowance is lengthened. The power can be increased sufficiently. Thereby, even when foreign matters such as dust enter and the insertion resistance increases, the optical fiber 1 can be reliably inserted.
- the coating removal unit 18 that removes the coating 1 b of the optical fiber 1 by contact with the optical fiber 1
- the coating 1 b of the optical fiber 1 can be applied using the insertion force of the optical fiber 1 into the connector body 11. Since it is removed, it is not necessary to remove the coating 1b of the optical fiber 1 separately using a dedicated tool before the optical fiber 1 is inserted, and the assembly work of the optical connector 10 can be performed efficiently. At this time, even if the insertion force of the optical fiber 1 is increased in order to remove the coating 1b, the bending of the optical fiber 1 can be prevented by the bending restricting portion 16, so that the coating removing portion 18 can cover the optical fiber 1. 1b can be removed reliably. If the tip of the coating 1b of the optical fiber 1 is cut or otherwise damaged, the insertion force for removing the coating 1b can be reduced.
- the guide portion 14c of the second fiber guide 14 is configured to insert the optical fiber 1 into the circular hole 14d.
- the guide portion 14e shown in FIG. it may be formed by a block-shaped member having a V-shaped groove 14f, and the optical fiber 1 may be inserted between the plate-shaped guide member 14g.
- the coating removal unit 18 is used to remove the coating 1b of the optical fiber 1.
- the optical fiber 1 in which the coating on the tip side is removed in advance without providing the coating removal unit. May be inserted.
- a pressing force is applied to the fiber end surface by the restoring force of the bending portion 1c.
- the bending portion 1c may be omitted. Good.
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Abstract
Description
P=4π2EI/L2 ・・・(1)
で表されることが知られている。ここで、Eはガラスの弾性係数であり、Iは断面2次モーメントである(例えば、非特許文献2参照。)。この挿入力以上の力を光ファイバの軸方向に加えると、光ファイバ1は可撓領域において撓んでしまい、それ以上挿入することができなくなる。例えば、図42に示すように、ゴミ等の異物Aによりファイバガイド6内で光ファイバ1が引掛かり、この引掛かりにより生ずる力が可撓領域の大きさで決まる挿入力を超えた場合には、光ファイバ1の後端をコネクタ内へ押し込もうとしても、可撓領域で光ファイバ1が撓んでしまい、それ以上コネクタ内に挿入することができない。
図1乃至図3は本発明の第1の実施形態を示すもので、同図に示す光コネクタ10は光ファイバ1を相手側コネクタに接続するためのものである。
即ち、蓋部材14bを取り外すことにより、光ファイバ1の押し込みによって生ずる撓み部分が撓み受容部14aに受容されるようになっている。
ファイバホルダ7は光ファイバ1を挿入する際に固定部材16に当接する。固定部材16とファイバガイド14と可動ガイド部15bは一体となっているので、光ファイバ1の挿入に際して、ファイバホルダ7によってこれらはコネクタ内部方向へと押し込まれる。その際、第1のファイバガイド13と第2のファイバガイド14との間には撓み規制部15の可動ガイド部15bによって所定長さの挿入代Lが確保されており、撓み規制部15では可動ガイド部15bが光ファイバ1の挿入方向に短くなりながら固定ガイド部15a及び可動ガイド部15bによって光ファイバ1の撓みが規制される。また、第2のファイバガイド14の撓み受容部14aは蓋部材14bによって閉塞されているので、撓み受容部14aによって光ファイバ1の撓みが生ずることはない。次に、第1のファイバガイド13内で光ファイバ1を内蔵ファイバ12aに突き合わせた後は、図3(d)に示すように第2のファイバガイド14から蓋部材14bを取り除き、光ファイバ1を更にコネクタ本体11内に押し込み、第2のファイバガイド14をコネクタ本体11に固定するとともに、光ファイバ1の後端側を固定部材16によって固定する。これにより、第2のファイバガイド14内の光ファイバ1に撓み部1cが生ずるが、この撓み部1cは撓み受容部14a内に受容され、撓み部1cの復元力によって光ファイバ1の端面が内蔵ファイバ12aの端面に押し付けられる。
L=S×N ・・・(2)
となり、挿入力Pは、式(1)と同様、
P=4π2EI/L2 ・・・(3)
となる。即ち、光コネクタの一般的なフェルール長は8~10mmであるが(例えば、JIS C 5973、“F04形光ファイバコネクタ”参照。)、この長さのフェルールを用いて光コネクタを組み立てる際には、8~10mm以上光ファイバを突出させる必要がある。そこで、挿入代Lを10mm以上とすると、S=2mmの時はN≧5となる。このことから、S=2mm、N=5とすると、最大挿入力は約8.4N、挿入代Lは10mmを確保できることになり、本発明の撓み規制部15を有しない従来の構造での限界値(挿入力2.7N、挿入代2mm)よりも挿入力、挿入代ともに大きくすることができる。
図8及び図9は本発明の第2の実施形態を示すもので、第1の実施形態とは撓み規制部の構成が異なる。尚、前記実施形態と同等の構成部分には同一の符号を付して示す。
図12及び図13は本発明の第3の実施形態を示すもので、同図に示す光コネクタ20は光ファイバ1を相手側コネクタに接続するためのものである。
L=S×N+L2 ・・・(4)
となる。ここで、L2はコネクタ後端の撓みうる長さである(図3参照)。L2とSのいずれか長いほうをlとおいて、挿入力Pは、式(1)と同様、
P=4π2EI/l2 ・・・(5)
となる。
クリアランスをCとおくと曲げモーメントのつり合いから、光ファイバ1に力Pを加えた時の撓み規制部内での最小曲げ半径Rは、
R=EI/CP ・・・(6)
となる。
l=Sとして式(5)を式(6)に代入すると、
R=S2/4πC2 ・・・(7)
となる。
一方、光ファイバの破断確率はRが2.5mm以下となると飛躍的に高まることが知られている。(例えば、電子情報通信学会2008年ソサイエティ大会講演論文集、“光ファイバの寿命推定方法”、B-13-40参照。)C=30μmであるので、R≧2.5mmとするためにはS≧1.45mmとなる。
図14乃至図17は本発明の第4の実施形態を示すもので、同図に示す光コネクタ30は光ファイバ1を相手側コネクタに接続するためのものである。
図18及び図19は本発明の第5の実施形態を示すもので、同図に示す光コネクタ40は光ファイバ1を相手側コネクタに接続するためのものである。
即ち、蓋部材44bは光コネクタ10を相手側コネクタに接続する際に取り外され、コネクタ接続時の光ファイバ1の押し込みによって生ずる撓み部分が撓み受容部44aに受容されるようになっている。
図20及び図21は本発明の第6の実施形態を示すもので、同図に示す光コネクタ50は光ファイバ1を相手側コネクタに接続するためのものである。
図22乃至図27は本発明の第7の実施形態を示すもので、同図に示す光コネクタ10は光ファイバ1を相手側コネクタに接続するためのものである。
図28乃至図30は本発明の第8の実施形態を示すもので、同図に示す光コネクタ20は光ファイバ1を相手側コネクタに接続するためのものである。
図31乃至図33は本発明の第9の実施形態を示すもので、同図に示す光コネクタ30は光ファイバ1を相手側コネクタに接続するためのものである。
図34及び図35は本発明の第10の実施形態を示すもので、同図に示す光コネクタ40は光ファイバ1を相手側コネクタに接続するためのものである。
図36乃至図39は本発明の第11の実施形態を示すもので、同図に示す光コネクタ10は光ファイバ1を相手側コネクタに接続するためのものである。
即ち、蓋部材14bを取り外すことにより、光ファイバ1の押し込みによって生ずる撓み部分が撓み受容部14aに受容されるようになっている。また、第2のファイバガイド14の一端側には光ファイバ1の軸方向に延びるガイド部14cが設けられ、ガイド部14cの先端はテーパ状に形成されている。この場合、ガイド部14cは、図37に示すように円形の孔14d内に光ファイバ1を挿通するようになっている。
L=S×N+L2 ・・・(8)
となる。ここで、L2はコネクタ後端の撓みうる長さである(図38参照)。L2とSのいずれか長いほうをlとおいて、挿入力Pは、式(1)と同様、
P=4π2EI/l2 ・・・(9)
となる。
1:光ファイバ、1a:裸ファイバ素線、1b:被覆、10:光コネクタ、11:コネクタ本体、15:撓み規制部、15b,15c,15d:可動ガイド部、17:撓み規制部、17b,17c:可動ガイド部、20:光コネクタ、21:コネクタ本体、25:撓み規制部、25b:可動ガイド部、27:被覆除去部、30:光コネクタ、31:コネクタ本体、35:撓み規制部、35b:可動ガイド部、37:端面研削部、40:光コネクタ、41:コネクタ本体、45:撓み規制部、45b:可動ガイド部、50:光コネクタ、51:コネクタ本体、55:撓み規制部、55b:可動ガイド部、57:被覆除去部。
(図22~図35において)
1:光ファイバ、1a:裸ファイバ素線、1b:被覆、1c:撓み部、10:光コネクタ、11:コネクタ本体、14b:可動ガイド部、16:被覆除去部、17:端面研削部、20:光コネクタ、21:コネクタ本体、24b:可動ガイド部、25:押圧部材、27:被覆除去部、28:端面研削部、30:光コネクタ、31:コネクタ本体、34b:可動ガイド部、36:被覆除去部、37:端面研削部、40:光コネクタ、41:コネクタ本体、44b:可動ガイド部、46:被覆除去部、47:端面研削部。
(図36~図40、図48において)
1:光ファイバ、1a:裸ファイバ素線、1b:被覆、10:光コネクタ、11:コネクタ本体、16:撓み規制部、18:被覆除去部。
(図41~図46において)
1:光ファイバ、1a:裸ファイバ素線、1b:被覆、2:コネクタ本体、3:内蔵ファイバ、4:フェルール、5:屈折率整合剤、6:ファイバガイド、7:ファイバホルダ、8:刃。
Claims (17)
- コネクタ本体内に光ファイバを挿入してなる光コネクタにおいて、
光ファイバ挿入方向の長さを可変に形成され、コネクタ本体内への光ファイバの挿入時に光ファイバ挿入方向に短くなりながら光ファイバの撓みを規制する撓み規制部を備えた ことを特徴とする光コネクタ。 - 前記撓み規制部の少なくとも一部を、光ファイバ挿入方向に互いに間隔をおいて移動自在に配置された複数の可動部材によって形成した
ことを特徴とする請求項1記載の光コネクタ。 - 前記撓み規制部の少なくとも一部を、光ファイバ挿入方向に伸縮自在な伸縮部材によって形成した
ことを特徴とする請求項1記載の光コネクタ。 - 前記撓み規制部の少なくとも一部を、光ファイバ挿入方向に伸縮自在な弾性部材によって形成した
ことを特徴とする請求項1記載の光コネクタ。 - 前記撓み規制部の少なくとも一部を、光ファイバ挿入方向に互いに間隔をおいて移動自在に配置された複数の可動部材、光ファイバ挿入方向に伸縮自在な伸縮部材、及び光ファイバ挿入方向に伸縮自在な弾性部材のうち少なくとも2つで構成された伸縮機構によって形成した
ことを特徴とする請求項1記載の光コネクタ。 - 前記可動部材の間隔が1.45mm以上2.4mm以下であることを特徴とする請求項2記載の光コネクタ。
- 前記撓み規制部の光ファイバ挿入方向への収縮量が1.1mm以上79.9mm以下であることを特徴とする請求項1から6のいずれかに記載の光コネクタ。
- 前記光ファイバの挿入力によって光ファイバの被覆を除去する被覆除去部を備えた
ことを特徴とする請求項1から7のいずれかに記載の光コネクタ。 - 前記光ファイバの挿入力によって光ファイバの先端面の角部を研削する端面研削部を備えた
ことを特徴とする請求項1から8のいずれかに記載の光コネクタ。 - 相手側コネクタと接続される内蔵ファイバと、
内蔵ファイバを保持するフェルールとを備え、
コネクタ本体内に挿入された光ファイバと内蔵ファイバとを突き合わせて接続するように構成した
ことを特徴とする請求項1から9のいずれかに記載の光コネクタ。 - コネクタ本体内に挿入された光ファイバを挿通するフェルールを備え、
光ファイバの先端をフェルールの先端面に配置して相手側コネクタと接続するように構成した
ことを特徴とする請求項1から9のいずれかに記載の光コネクタ。 - 前記コネクタ本体内に配置された光ファイバを先端側に向かって押圧する押圧手段を備えた
ことを特徴とする請求項1から11のいずれかに記載の光コネクタ。 - 前記押圧手段を、弾性部材の弾性力によって光ファイバを押圧するように構成した
ことを特徴とする請求項12記載の光コネクタ。 - 前記押圧手段を、コネクタ本体内で撓ませた光ファイバの撓み部の復元力によって光ファイバを押圧するように構成した
ことを特徴とする請求項12記載の光コネクタ。 - 光ファイバ挿入方向の長さを可変に形成され、コネクタ本体内への光ファイバの挿入時に光ファイバの撓みを規制する撓み規制部を備えた光コネクタの組立方法であって、
撓み規制部の光ファイバ挿入方向の長さを短くしながらコネクタ本体内に光ファイバを挿入する
ことを特徴とする光コネクタの組立方法。 - 光ファイバの挿入力によって光ファイバの被覆を除去する被覆除去部と、光ファイバの挿入力によって光ファイバの先端面の角部を研削する端面研削部と、光ファイバ挿入方向の長さを可変に形成され、コネクタ本体内への光ファイバの挿入時に光ファイバの撓みを規制する撓み規制部とを備えた光コネクタの組立方法であって、
撓み規制部の光ファイバ挿入方向の長さを短くしながらコネクタ本体内に光ファイバを挿入するとともに、
光ファイバを挿入しながら被覆除去部によって光ファイバの被覆を除去し、
光ファイバを挿入しながら端面研削部によって光ファイバの先端面の角部を研削する
ことを特徴とする光コネクタの組立方法。 - 光ファイバ挿入方向に弾性変形可能に形成され、コネクタ本体内への光ファイバの挿入時に光ファイバの撓みを規制する撓み規制部を備えた光コネクタの組立方法であって、
撓み規制部を光ファイバ挿入方向に収縮させながらコネクタ本体内に光ファイバを挿入する
ことを特徴とする光コネクタの組立方法。
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| CN108027231A (zh) * | 2015-09-10 | 2018-05-11 | 三菱日立电力系统株式会社 | 光纤探头、光纤测量装置以及间距控制系统 |
| US10605108B2 (en) | 2015-09-10 | 2020-03-31 | Mitsubishi Hitachi Power Systems, Ltd. | Optical fiber probe, optical fiber measuring device, and clearance control system |
| CN108027231B (zh) * | 2015-09-10 | 2020-04-14 | 三菱日立电力系统株式会社 | 光纤探头、光纤测量装置以及间距控制系统 |
| CN113759471A (zh) * | 2021-09-08 | 2021-12-07 | 东莞市奥悦精密科技有限公司 | 用于5g信号传输的连接器及其使用方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| US8702317B2 (en) | 2014-04-22 |
| CN102472872A (zh) | 2012-05-23 |
| JP5167413B2 (ja) | 2013-03-21 |
| JPWO2011018996A1 (ja) | 2013-01-17 |
| CN102472872B (zh) | 2014-08-27 |
| US20120128303A1 (en) | 2012-05-24 |
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