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31. 发明专利

JPH09141546A OPTICAL CONNECTOR END FACE POLISHING CLAMPING DEVICE 失效
公开(公告)号：JPH09141546A
公开(公告)日：1997-06-03
申请号：JP30028195
申请日：1995-11-17
申请人： FURUKAWA ELECTRIC CO LTD
发明人： ISO TAKAAKI , KANEDA KAZUHARU
IPC分类号： B24B19/00 , B24B41/06
摘要： PROBLEM TO BE SOLVED: To clamp an optical connector with simple operation without the rink of damaging an optical fiber core wire. SOLUTION: An opening/closing block 27 is hinge-connected to the tip part of a reference face block 21. When the opening/closing block 27 is closed, a longitudinal pressing member 35 presses a drum part 11a of an optical connector 11 to a first reference face to set the axial direction of the optical connector 11, and a vertical pressing member 41 presses a shoulder part 11b of the optical connector 11 to a second reference face to position the optical connector vertically. The vertical pressing member 41 has a keep piece 45, and the tip side lower face of the keep piece 45 is formed into an inclined face C so as to easily mount on the shoulder part 11b of the optical connector 11.

32. 发明专利

JPH01306215A MOLD FOR OPTICAL FIBER PLASTIC CONNECTOR 失效
公开(公告)号：JPH01306215A
公开(公告)日：1989-12-11
申请号：JP13567488
申请日：1988-06-03
申请人： FURUKAWA ELECTRIC CO LTD
发明人： OTA TOSHIHIKO , KAWAZOE HIDEYO , ISO TAKAAKI
IPC分类号： G02B6/36 , B29C45/26 , B29C45/36 , B29C45/37 , B29L11/00 , B29L22/00
摘要： PURPOSE:To better roundness of a cylinder main body of a connector and enhance accuracy by providing a gate for injecting plastic in mold cavities forming the cylinder main body and a collar respectively in the positions close to the cavities. CONSTITUTION:A mold 10 consists of split molds 22, 24 and 26 having mold cavities 22a, 24a and 26a forming a cylinder main body 14, a collar 16 and an upper cylinder 18 of a connector 12 and a gate 28 for injecting plastic into said cavities, and the gate 28 is provided in a position close to a cavity 22a forming the cylinder main body 14. When the gate 28 is provided in the position close to the cavity 22a forming the cylinder main body 14 of the connector 12, transferability of the cylinder main body 14 is increased to better the roundness of the cylinder main body 14.

33. 发明专利

JPS61270703A METHOD FOR CUTTING TAPE-LIKE MULTICORE OPTICAL CABLE CORE 失效
公开(公告)号：JPS61270703A
公开(公告)日：1986-12-01
申请号：JP11205785
申请日：1985-05-27
申请人： FURUKAWA ELECTRIC CO LTD
发明人： ISO TAKAAKI , OTAKE AKIHIRO , OCHIAI TOSHIHIRO
IPC分类号： G02B6/00 , G02B6/44 , H02G1/12
摘要： PURPOSE:To cut off an optical fiber at its rectangular end surface by leaving a part of an unnecessary coat on an exposed optical fiber at the removal of the coat and then cutting of the exposed optical fiber between the residual coat and the unnecessary coat. CONSTITUTION:At the removal of the coat 12 of the tape-like multicore optical fiber core 10, the unnecessary coat 12A to be removed is slid on the exposed optical fiber 14 and left on the optical fiber 14 exposed with a fixed interval P from the residual coat 12B on the optical fiber 14. Then, the exposed optical fiber 14 is cut off on a line 15 between the residual coat 12A and the unnecessary coat 12B by a cutter (unshown in figure).

34. 发明专利

JPS60131504A FORMATION OF TERMINAL OF COATED OPTICAL FIBER 失效
公开(公告)号：JPS60131504A
公开(公告)日：1985-07-13
申请号：JP24003483
申请日：1983-12-20
申请人： FURUKAWA ELECTRIC CO LTD
发明人： OBARA YUUICHI , TATEGAMI SHIGERU , OOTAKE AKIHIRO , ISO TAKAAKI , KOMURA KENICHI , WATANABE KAZUNORI
IPC分类号： C03C25/10 , G02B6/00 , G02B25/02 , H02G1/12
摘要： PURPOSE:To enable high-strength junction without damaging the joint at the time of melt junction by immersing the terminal of an optical fiber coated with urethane, epoxy, or silicone resin to swell and soften the resin layer, and removing it. CONSTITUTION:The outer circumference of a naked optical fiber 2, i.e., a clad- coated core, is covered with an outer coat 3 made of at least one of urethane, epoxy, and silicone resins. The terminal of the covered optical fiber is immersed into a solvent 5 of trichloroethylene, dimethylsulfone, dimethylformamide, benzene, chloroform, etc., or a solvent mixture of some of them, to swell and soften it. The softened resin is removed to disclose the fiber 2, and it is further freed from the remaining resin 3 by dipping it into acetone, and dried in a strem of warm air. Each terminal of the obtained fibers 2 is butted and exactly centered, thus permitting melt junction with good transmittance and high junction strength without forming any fine scratch or defect on the surface of the optical fiber 2.

35. 发明专利

JPH06201948A SIMPLE CONNECTING JIG FOR OPTICAL FIBER TAPE COATED FIBER 失效
公开(公告)号：JPH06201948A
公开(公告)日：1994-07-22
申请号：JP35804792
申请日：1992-12-25
申请人： FURUKAWA ELECTRIC CO LTD
发明人： ISO TAKAAKI
IPC分类号： G02B6/36 , G02B6/40
摘要： PURPOSE:To simply and quickly connect an optical fiber tape coated fiber of a measuring instrument side and an optical fiber tape coated fiber of a cable side by providing a means for fixing a ferrule, and a coated fiber holder, in a fixed frame, and a slide member, respectively. CONSTITUTION:The jig executes to connect and detach an optical fiber tape coated fiber 3 of a cable side and an optical fiber tape coated fiber 7 of a measuring instrument side, and is provided with a fixed frame 21, and a slide member 25 which is guided by a guide rail 23 of a groove shape formed in its fixed frame 21 and moves forward and backward. Also, the fixed frame 21 is provided with a clamp 27 for fixing a ferrule 9 attached to the tape coated fiber of the measuring instrument 5 side to a fixed position, on one end side of the guide rail 23. In this regard, as for this clamp 27, that which is used for fixing a free ferrule 11 is also allowable. On the other hand, the slide member 25 is provided with a coated fiber holder 29 for recognizing the optical fiber tape coated fiber 3 of the optical cable 1 side.

36. 发明专利

JPH06186458A SIMPLE SPLICING JIG FOR COATED OPTICAL FIBER TAPES 失效
公开(公告)号：JPH06186458A
公开(公告)日：1994-07-08
申请号：JP35545592
申请日：1992-12-21
申请人： FURUKAWA ELECTRIC CO LTD
发明人： ISO TAKAAKI
IPC分类号： G02B6/36 , G02B6/40
摘要： PURPOSE:To easily and quickly splice coated optical fiber tapes on a measurement equipment side and coated optical fiber tapes on a cable side without requiring a high splicing technique and to realize efficient splicing work when splice loss is measured. CONSTITUTION:A fixed frame 21 and a sliding member 25 are provided. The frame 21 is provided with a clamp 27 fixing the ferrule 11 of the measurement equipment 7 side on one end side of a guide rail 23. The sliding member 25 is provided with a coated optical fiber holder 29 grasping the coated optical fiber tapes 3 on the cable 1 side and a ferrule set part 31 setting a ferrule 5 on the tip of the coated optical fiber tapes 3 at a fixed position.

37. 发明专利

JPS6227708A METHOD FOR ATTACHING FERRULE TO TERMINAL PART OF OPTICAL FIBER 失效
公开(公告)号：JPS6227708A
公开(公告)日：1987-02-05
申请号：JP16687085
申请日：1985-07-30
申请人： FURUKAWA ELECTRIC CO LTD
发明人： ISO TAKAAKI , TATEGAMI SHIGERU , OTAKE AKIHIRO , HAYASHI TAKEHIRO
IPC分类号： G02B6/36 , G02B6/38
摘要： PURPOSE:To attach a ferrule easily, surely, and uniformly by adjusting the position of an optical fiber projected from the front end of the ferrule by an aligning master so that the optical fiber is placed in the just center of the ferrule and heating an adhesive filled in a hole provided in the ferrule to harden it. CONSTITUTION:A thermosetting adhesive 3 is filled in a hole of a ferrule 1 provided with an optical fiber insertion hole 2a and an optical fiber core insertion hole 2b continuously in the center, and optical fiber core 4 which has an optical fiber 5 exposed from the terminal by a prescribed length is inserted into the hole 2. After the adhesive stuck to the outside peripheral surface of the optical fiber 5 projected from the front end of the ferrule 1 is removed by an alcohol or the like, the ferrule 1 and the optical fiber 5 projected from its front end are inserted to an aligning master 6 provided with a ferrule insertion groove 7 and an optical fiber insertion groove 8 in the center of said groove 7 continuously, and they are so aligned that the optical fiber 5 is put in the center of the ferrule 1, and the adhesive filled in the hole of the ferrule 1 is hardened by heating in this state to attach the ferrule 1 to the terminal part of the optical fiber core.

38. 发明专利

JP2000317800A OPTICAL CONNECTOR ABRASIVE BOARD AND OPTICAL CONNECTOR BURNISHER WITH IT 失效
公开(公告)号：JP2000317800A
公开(公告)日：2000-11-21
申请号：JP12865599
申请日：1999-05-10
申请人： FURUKAWA ELECTRIC CO LTD
发明人： ISO TAKAAKI , KAMIKO MICHIYASU , GOTO AKIO , NAKATANI AKIRA
IPC分类号： B24B19/00 , B24B37/12 , B24D3/00 , B24D3/06 , B24D7/00 , G02B6/00 , G02B6/36 , B24B37/04
摘要： PROBLEM TO BE SOLVED: To suppress abrasive refuse from entering the gaps between abrasive grains on an abrasive grain abrasive surface by forming abrasive grains on an abrasive grain electrodeposition forming face formed with recesses together with a binder by electrodeposition, and forming a plurality of recesses on the abrasive grain abrasive surface. SOLUTION: A plurality of (numerous) fine recesses are formed on the surface of the abrasive grain electrodeposition forming face 11 of a metal plate 14 with a flat surface. Abrasive grains 12 are formed on the surface of the metal plate 14 formed with recesses together with a binder by electrodeposition, and numerous recesses 16 of the abrasive grain forming face 11 as the recesses on the surface of the metal plate 14 are formed on an abrasive grain abrasive surface 15. Since numerous recesses 16 are adjacently arranged on the flat abrasive grain abrasive surface 15, the abrasive refuse generated when the connecting end face of an optical connector is polished is efficiently dropped into the recesses 16. The abrasive refuse entering the gaps 13 between abrasive grains 12 is reduced, and the abrasive refuse is prevented from being crimped and solidified into the gaps 13 between abrasive grains 12.

39. 发明专利

JPH11167045A OPTICAL CONNECTOR 失效
公开(公告)号：JPH11167045A
公开(公告)日：1999-06-22
申请号：JP33592197
申请日：1997-12-05
申请人： FURUKAWA ELECTRIC CO LTD
发明人： ISO TAKAAKI
IPC分类号： G02B6/36
摘要： PROBLEM TO BE SOLVED: To surely couple a plug frame and a stop ring in a normal state by forming a guide groove for guiding a flange of the stop ring to a slit on the inner peripheral surface of the plug frame. SOLUTION: The plug frame 1 houses a ferrule to be fixed to the end of an optical fiber and the plug frame 1 and the stop ring 3 are coupled to each other by making a pair of the flange parts 29 formed on the outer peripheral surface of the stop ring 3 fall into a pair of the slits 31 formed on the plug frame 1. On the inner peripheral surface of the plug frame 1, the guide groove 37 for guiding the flange part 29 of the stop ring 3 from a rear end opening part to the slit 31 is formed. When the stop ring 3 is inserted to the plug frame 1, the flange part 29 is guided by the guide groove 37 and the flange part 29 is surely made to fall into the slit 31 without shifting the position relation in a peripheral direction of both.

40. 发明专利

JPH09105837A MULTI-FIBER CONNECTOR 失效
公开(公告)号：JPH09105837A
公开(公告)日：1997-04-22
申请号：JP26276795
申请日：1995-10-11
申请人： FURUKAWA ELECTRIC CO LTD
发明人： ISO TAKAAKI
IPC分类号： G02B6/38 , G02B6/40
摘要： PROBLEM TO BE SOLVED: To provide a multi-fiber connector which holds a guide pin to previously set specific projection length from an abutting end surface and suppresses the falling of the guide pin even when an abutting connection is repeated. SOLUTION: The multi-fiber connector 10 is constituted by arranging an elastic pin grip member 13, which has an opening 13a in the center, a slide 13b which extends outward while connecting the centers of a couple of pin holes on both sides of the opening and is smaller than the diameter (d) of the guide pin 12 at the position corresponding to at least one pin hole 11a, and a grip hole 13c which has a diameter D smaller than diameter (d) of the guide pin at the position corresponding to the other pin hole when the slit is formed corresponding to only one pin hole, between a ferrule 11 and a restriction member 14.

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