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1. 发明专利

JPH08234024A HOLDING MEMBER FOR COATED OPTICAL FIBER JUNCTURE 失效
公开(公告)号：JPH08234024A
公开(公告)日：1996-09-13
申请号：JP3687695
申请日：1995-02-24
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： ISO TAKAAKI , SHIINO MASAHITO , HOKARI KAZUO
IPC分类号： G02B6/00
摘要： PURPOSE: To provide a holding member of a coated optical fiber juncture which is installable even in a narrow housing space and is stowable even in a connecting box of a small bottom area. CONSTITUTION: An extra length holding part 20 is provided with an extra length holding plate 26. An inlet side extra length housing case 21A for housing extra lengths 4 on the inlet side of the juncture 3 and an outlet side extra length housing case 21B for housing the extra lengths on the outlet side are laminated and integrated on this extra length holding plate 26. A juncture holding part 30 is provided with a juncture holder 31 for holding the juncture 3 and this juncture holder 31 is removably housed in a recessed groove part 27 formed in the extra length holding plat 26 of the extra length holding part.

2. 发明专利

JPH08118225A CLAMP DEVICE FOR POLISHING END SURFACE OF OPTICAL CONNECTOR FERRULE 失效
公开(公告)号：JPH08118225A
公开(公告)日：1996-05-14
申请号：JP28151494
申请日：1994-10-21
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： ISO TAKAAKI , HOKARI KAZUO
IPC分类号： B24B19/00 , B24B41/06 , F16B2/12
摘要： PURPOSE: To prevent damage of an optical fiber core wire, so as to achieve simplification of the ferrule fixing operation by setting the back surface of an optical connector ferrule and the flange lower surface through a process of bring them in contact with the reference surface and the upper surface of a receiving stand, advancing clamp blocks, and bring the right-angled surface into contact with the front surface and the upper surface of the ferrule. CONSTITUTION: A frame body 29 is laid, a ferrule 11 is inserted into a rectangular hole 23 on the upper surface, and the lower surface of a flange part 11a is brought in contact with the upper surface 25 of a receiving stand 21. The frame body 29 is raised until a both leg part upper surface 49 is bumped against a first stop surface 45, and clamp blocks 39 are advanced by rotating a screw shaft 35 by a knob 37. The clamp blocks 39 are diagonally advanced toward the ferrule 11 from above, and a right-angled surface 41 of the clamp block 39 is brought in contact with the front surface and the upper surface of the ferrule 11, so as to clamp the ferrule 11. The ferrule 11 back surface is brought in contact with a reference surface 27 and clamped by the angle to be specified by the reference surface 27.

3. 发明专利

JPH0749437A OPTICAL MULTICORE PLASTIC CONNECTOR 失效
公开(公告)号：JPH0749437A
公开(公告)日：1995-02-21
申请号：JP11467294
申请日：1994-04-28
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： ISO TAKAAKI , TATEGAMI SHIGERU , OTAKE AKIHIRO , HAYASHI TAKEHIRO , SATAKE TOSHIAKI , KASHIMA YOSHIO
IPC分类号： G02B6/38 , G02B6/40
摘要： PURPOSE:To prevent the dispersion of a pin fitting hole, and prevent the increase in clearance by the use of the pin fitting hole by forming the pin fitting hole by a fitting sleeve consisting of a metal or ceramic casted into an optical multicore plastic connector body. CONSTITUTION:A fitting sleeve 20 consisting of a metal or ceramic which has a dropping-out preventing means 19 consisting of a projection on the outer circumference and a pin fitting hole having a prescribed bore diameter in the inner part is used, this is fitted to the outer circumference of a metal master pin 21, and the master pin 21 is positioned in the master pin positioning hole 17 of a metal mold 13, whereby the fitting sleeve 20 is positioned in the mold cavity 14 of the metal mold 13 through the master pin 21. The fitting sleeve 20 is casted to a molded optical multicore plastic connector body 6 together with a core wire protecting bush 5, a core wire coat 3, and an optical fiber 4. The mold is released after the plastic is hardened, and the master pin 21 is pulled out from the fitting sleeve 20 to provide an optical multicore plastic connector.

4. 发明专利

JPH0574044B2 失效
公开(公告)号：JPH0574044B2
公开(公告)日：1993-10-15
申请号：JP6154884
申请日：1984-03-29
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： KOMURA KENICHI , TATEGAMI SHIGERU , OOTAKE AKIHIRO , OBARA JUICHI , WATANABE KAZUKI , ISO TAKAAKI , MYAJIMA YOSHIAKI
IPC分类号： G02B6/24 , C03C25/10 , G02B6/00 , G02B6/02 , G02B6/245 , G02B6/255 , G02B6/44 , H02G1/12 , C03C25/02

5. 发明专利

JPS58102912A PRODUCTION OF OPTICAL CONNECTOR 失效
公开(公告)号：JPS58102912A
公开(公告)日：1983-06-18
申请号：JP20311081
申请日：1981-12-16
申请人： NIPPON TELEGRAPH & TELEPHONE , FURUKAWA ELECTRIC CO LTD
发明人： SATAKE TOSHIAKI , TAKAGI SEISHI , ISO TAKAAKI , KOKAYU MIKIO
IPC分类号： B29C45/14 , G02B6/38
摘要： PURPOSE:To attain a mass production of optical connectors with high precision, by aligning plural optical fibers after stripping off the coat at the edge of each optical fiber, inserting the optical fibers into the hole of a holding plate along with pins at both sides and then injecting plastic while the optical fiber is held between two metallic dies. CONSTITUTION:Two metallic dies 1A and 1B have cavities 2a and 2b and flat square grooves 7a and 7b are formed at the counter faces 3a and 3b at the cable side. At the same time, the square grooves 4a and 4b are formed, and semicircular recesses 5a, 6a, 5b and 6b are formed at both sides of the grooves 4a and 4b to serve as pins. A plastic injecting port 8 is formed to the die 1A. The terminal of an optical cable 4 is processed and an optical fiber 15i is inserted into a hole 11i of a holding plate 9. The pins 16a and 16b are put into the holes 10a and 10b at both ends of the hole 11i, and the fiber 15i is held between the dies 1A and 1B. Under such conditions, the viscous plastic is injected 8. The plastic is taken out after it is hardened, and the fiber 15i is cut and polished at the face of the plate 9. Then the pins 16a and 16b are pulled out to be used as male screws. In such a way, the coincidence is obtained with high precision between axial cores for optical connectors in a mass production.

6. 发明专利

JPS5887517A PROTECTING METHOD FOR CONNECTED PART OF OPTICAL FIBER IN OPTICAL CABLE 失效
公开(公告)号：JPS5887517A
公开(公告)日：1983-05-25
申请号：JP18622881
申请日：1981-11-20
申请人： NIPPON TELEGRAPH & TELEPHONE , FURUKAWA ELECTRIC CO LTD
发明人： MATSUMOTO MICHITO , YABUTA TETSUO , TATEGAMI SHIGERU , ODA MIKIO , OOTAKE AKIHIRO , ISO TAKAAKI
IPC分类号： G02B6/24 , G02B6/38
摘要： PURPOSE:To increase tension by covering the outside of the connected part of optical fibers after reinforcement with an elastic member and by incorporating the resulting fiber into an optical cable. CONSTITUTION:The outsides of the melted and connected ends 3, 4 of a pair of optical fibers 1, 2 are reinforced with resin 5 by molding, and the outside of the resin 5 is covered with an elastic member 6 by molding. The resulting fiber is incorporated into an optical cable. When tension is applied, the elastic member is deformed inward in the radial direction as if it is crushed, so the connected part is deformed inward as if it sinks. As a result, the connected part receives less tension and the fragile connected part is protected.

7. 发明专利

JPH10282360A BRANCHING CONNECTION STRUCTURE OF OPTICAL CABLE, AND BRANCHING CONNECTION BOX HAVING DUCT 失效
公开(公告)号：JPH10282360A
公开(公告)日：1998-10-23
申请号：JP9353697
申请日：1997-04-11
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： SHIINO MASAHITO , ISO TAKAAKI , FURUKAWA SHINICHI , HOKARI KAZUO
IPC分类号： G02B6/00 , G02B6/28 , H02G3/08
摘要： PROBLEM TO BE SOLVED: To miniaturize a branching connection box, to simplify the inside of the branching connection box, and recycle an optical coated fiber on the counter station side generated in cutting for branching. SOLUTION: An optical coated fiber to be branched of an optical coated fiber 3 in which a sheath of a trunk cable 1 is peeled and the coated fiber is exposed, is cut, an optical coated fiber 3a1 on the station side after cutting is connected to an optical coated finer 7 of a branching cable 5, and its coated fiber connection part 11 and an excessive coated fiber part are stored in a branching connection box 9. A non-branched optical coated fiber 3b of the exposed optical coated fiber 3 is passed through the branching connection box 9 in one direction, and a part not stored in the branching connection box 9 is stored in a duct 21 projected in the branching connection box 9. An optical coated fiber 3a2 on the counter-station side after cutting is connected to an optical coated fiber 15 for relay, and an excessive part of the optical coated fiber 15 for relay is stored in the branching connection box 9.

8. 发明专利

JPS6061706A REINFORCING METHOD OF OPTICAL FIBER CONNECTING PART AND ITS REINFORCING MEMBER 失效
公开(公告)号：JPS6061706A
公开(公告)日：1985-04-09
申请号：JP17100583
申请日：1983-09-16
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： TSUCHIDA YOSHIO , ISO TAKAAKI , OOTAKE AKIHIRO , TATEGAMI SHIGERU , MIYAJIMA YOSHIAKI , MATSUMOTO MICHITO
IPC分类号： G02B6/24 , G02B6/38
摘要： PURPOSE:To raise an effect of reinforcement and an execution efficiency by providing a heat melting resin on the inside of an outside tube having a heat contracting property, and providing a tensile strength body on the inside of this resin. CONSTITUTION:A pair of covered optical fibers 1A, 1B having covering removed parts 3A, 3B in the connecting end side are welded and connected in a state that the tips of each covering removed part concerned 3A, 3B are butted to each other. A tube-shaped tensile strength body 9 having a resin path part 10 on the circumferential surface is provided together with a heat melting resin 8 placed along with said body, on the inside of an outside tube 7 having a heat contracting property, and an optical fiber connecting part is contained in the tensile strength body 9. The outside tube 7 is contracted by a heating means, also the heat melting resin 8 is melted, filled into the inside of the tensile strength body 9, and the connecting part in the tensile strength body 9 is covered with the heat melting resin 8, the tensile strength body 9 and the outside tube 7. Since this process is executed for heating only, it can be executed easily and quickly. The connnecting part is protected by the resin 8 and the tensile strength body 9, and the reinforcement can be executed with a high reliability against an external force.

9. 发明专利

JPS5854308A OPTICAL CONNECTOR 失效
公开(公告)号：JPS5854308A
公开(公告)日：1983-03-31
申请号：JP15160581
申请日：1981-09-25
申请人： NIPPON TELEGRAPH & TELEPHONE , FURUKAWA ELECTRIC CO LTD
发明人： MURATA HISASHI , KOKAYU MIKIO , ISO TAKAAKI , TATEGAMI SHIGERU , TAKAGI SEISHI
IPC分类号： G02B6/38
摘要： PURPOSE:To perform a high-precision connection of a connector easily, by using plugs, which have axial plug elements at tips of base parts, and an adapter where plural adapter elements having hole parts for fitting of plug elements are provided in parallel. CONSTITUTION:A plug 1C is inserted from one side face of an adapter 5 into the inside, and plugs 1A and 1B or the like are inserted selectively from the other side face, thus connecting optical fibers 4A, 4B, and 4C. In this case, for example, a plug element 3A of the plug 1A and a plug element 3C1 of the plug 1C are fitted closely to a hole part 10 of an adapter element 71, and end faces of optical fiber cores exposed to respective end faces of these plug elements are matched to each other. Meanwhile, plug elements 3B1 and 3B2 of the plug 1B and plug elements 3C4 and 3C5 of the plug 1C are butted to each other respectively in adapters 74 and 75 and are connected.

10. 发明专利

JPH07218730A TERMINAL WORKING DEVICE FOR METAL PIPE CLAD OPTICAL FIBER 失效
公开(公告)号：JPH07218730A
公开(公告)日：1995-08-18
申请号：JP896694
申请日：1994-01-31
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： ISO TAKAAKI , HOKARI KAZUO
IPC分类号： G02B6/00 , H02G1/14
摘要： PURPOSE:To provide a terminal working device for a clad optical fiber which is capable of easily putting a score for cutting on a metallic pipe without damaging the optical fiber housed therein. CONSTITUTION:This terminal working device for the metallic pipe clad optical fiber is constituted to expose the optical fiber by removing the metallic pipe from the end of the metallic pipe clad optical fiber formed by cladding the optical fiber with the metallic pipe. The terminal working device 10 has a sliding means 16 which has a fiber groove 17a to be arranged with the metallic pipe clad optical fiber and is freely slidable in a direction orthogonal with this fiber groove and a pretreating means 20 which is arranged adjacently to this sliding means and subjects the end side of the metallic pipe to a pretreatment for cutting.

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