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1. 发明专利

JPH022127B2 失效
公开(公告)号：JPH022127B2
公开(公告)日：1990-01-17
申请号：JP21978684
申请日：1984-10-19
申请人： FUJIKURA LTD
发明人： YAMADA TAKESHI , OOSATO KAZUKUNI , WATANABE KO
IPC分类号： H01R43/00 , B29C61/00 , B29C63/42 , B29K105/02 , G02B6/24 , G02B6/255 , G02B6/38 , G02B6/44 , H02G1/14 , H05B3/00

2. 发明专利

JPS60184207A CUTTER OF OPTICAL FIBER 失效
公开(公告)号：JPS60184207A
公开(公告)日：1985-09-19
申请号：JP4096484
申请日：1984-03-03
申请人： FUJIKURA LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： YAMADA TAKESHI , OOSATO KAZUKUNI , KOYAMA KAZUHIRO , WATANABE KOU , HAIBARA TADASHI
IPC分类号： B26F3/00 , B26D7/08 , C03B37/16 , G02B6/00 , G02B6/25
摘要： PURPOSE:To obtain a good cut face without an individual difference by bringing a semicircular edge into contact with a fiber strand to scratch it on the way of the circular motion in a plane vertical to the fiber strand in a middle position between both clamps. CONSTITUTION:A coating part 12 in the end part of an optical fiber core 10 is peeled and is put in a groove 30, and a strand 14 is put in a groove 50, and the end part of the coating part 12 is applied to a stopper 36, and a retainer 38 is lowered to hold it. Solenoids 32 and 52 are operated to close a coating clamp 20 and a strand clamp 40, and the coating part 12 and the fiber strand 14 are caught in respective grooves. Next, a motor 64 is rotated, and the fiber strand 14 is scratched with an edge 72, and the strand 14 is slightly bent and curved when the edge 72 is brought into contact with the fiber strand 14, and the edge 72 is slightly moved backward while compressing a spring 76. Next, a motor 96 is rotated, and a pushing tool 88 is moved forward and is applied to the strand 14 from the direction vertical to the strand 14, and a bending stress is applied to it to break it.

3. 发明专利

JPS5711310A MELT-STICKING CONNECTION METHOD OF SINGLE MODE OPTICAL FIBER 失效
公开(公告)号：JPS5711310A
公开(公告)日：1982-01-21
申请号：JP8560680
申请日：1980-06-24
申请人： NIPPON TELEGRAPH & TELEPHONE , FUJIKURA LTD
发明人： KATOU YASUYUKI , YAMADA TAKESHI , WATANABE ATOU , OOSATO KAZUKUNI , ARAI TAKATOSHI
IPC分类号： G02B6/24 , G02B6/255
摘要： PURPOSE:To obtain a melt-sticking connection method whose connection loss is low by connecting cores by melt-sticking after uniting the axial centers of cores and operating the holders of optical fibers while heating the melt-stuck part so that the cores are arranged straightly. CONSTITUTION:Single mode optical fibers A1 and A2 to be connected are set on holders 1 and 2 and these connecting ends 3 and 4 are opposed by separating them only by a slight space. While monitoring the light transmitted through the fibers with a light source 5 such as a semiconductor laser and a light detector 6, the axial centers of cores B1 and B2 are united by controlling the positions of connecting ends 3 and 4. The connecting ends 3 and 4 are arc welded with a pair of electrodes 7 and 8. In order to compensate the curve of cores B1 and B2 in melt-stuck part C, arc is generated again on the melt-sticking part with the pair of electrodes 7 and 8 to heat the welding part and the optical fiber A1 or A2 are moved slightly to the horizontal or vertical direction. Since the curve of cores can be compensated by the above-mentioned procedure, melt-sticking connection with low connection loss is made available.

4. 发明专利

JPS56168602A LEADING METHOD OF OPTICAL FIBER 失效
公开(公告)号：JPS56168602A
公开(公告)日：1981-12-24
申请号：JP11894377
申请日：1977-10-03
申请人： NIPPON TELEGRAPH & TELEPHONE , FUJIKURA LTD
发明人： HIRAI MASATAKA , WATANABE ATOU , ONO ICHIROU , TAKUBO MITSUO , OOSATO KAZUKUNI
IPC分类号： G02B6/00 , G02B6/245 , H02G1/12
摘要： PURPOSE:To perform safe leading of good workability and high quality by electroheating the covering layer on a fiber strand and removing the same by decomposition at the time of leading of an optical fiber. CONSTITUTION:An electric heating wire 8 is wound in a coil shape, and a power source transformer 10 is connected to this wire 8. Its heating temp. is made controllable by a changing-over switch 11. The secondary covering layer 7 of an optical fiber 1 is beforehand removed to expose a primary covering layer 6, and the exposed part is inserted and retreated into the cylinder of the wire 8, whereby it is heated. By such heating, the thermosetting resin such as epoxy resin of the primary covering layer 6 is smoothly and quickly heated and decomposed. The sludge formed by this decomposition is wiped away by a cloth or the like impregnated with an alcohol or the like. With such constitution, the safe leading of good workability and high quality is accomplished.

5. 发明专利

JPS56140310A REINFORCING METHOD FOR MELT-CONNECTED PART OF OPTICAL FIBER 失效
公开(公告)号：JPS56140310A
公开(公告)日：1981-11-02
申请号：JP4437980
申请日：1980-04-04
申请人： NIPPON TELEGRAPH & TELEPHONE , FUJIKURA LTD
发明人： MIYAUCHI MITSURU , YAMADA TAKESHI , WATANABE ATOU , OOSATO KAZUKUNI , WATANABE NOBUHIKO , ARAI TAKATOSHI
IPC分类号： G02B6/24 , G02B6/38
摘要： PURPOSE:To make reinforcing of the melt-connected part of optical fibers sure and make the melt-connected part lighter in weight and smaller in size by opposing a pair of dies having recesses in the central part of the inside surface, and positioning the melt-connected part on these inside surfaces by being sandwiched with reinforcing pieces. CONSTITUTION:The melt-connected part 15 of optical fibers A are positioned between the recesses 11 of the opposing inside surfaces 10 of a pair of dies 13, 14, and reinforcing pieces 16 are superposed in the state that they sandwich the part 15, thence the part 15 is put together with the reinforcing pieces 16 into the recesse, and the optical fibers A are fitted into guide grooves 12; thereafter, the pieces 16 are melted by the heat sources installed in the dies 13, 14. Upon lapse of a prescribed time, the heating is ceased and the assembly is cooled, thereafter the fibers A are removed from the dies 13, 14, and this results in that the part 15 of the fibers A is covered by the pieces 16 formed to the shape of the recesses 11.

6. 发明专利

JPS5584905A SURPLUS LENGTH TREATING METHOD OF OPTICAL FIBER 失效
公开(公告)号：JPS5584905A
公开(公告)日：1980-06-26
申请号：JP15962078
申请日：1978-12-20
申请人： FUJIKURA LTD
发明人： WATANABE ATOU , OOSATO KAZUKUNI , ARAI TAKATOSHI , YAMAUCHI RIYOUZOU
IPC分类号： G02B6/24
摘要： PURPOSE:To orderly treat surplus lengths in a narrow space and minimize the transmission losses of optical fibers by placing the fibers having surplus lengths along a cylinder having flanges and winding the loops made of the surplus lengths onto the cylinder. CONSTITUTION:An optical fiber 100 having a surplus length is placed along a cylinder 10 across flanges 12 and 14. A circular loop making contact with the inside surfaces of the flanges 12, 14 is made by the surplus length between the flanges 12 and 14. More specifically, the fiber 100 led onto the cylinder 10 through a slit 16 is curved along the side surface of the cylinder 10 and is put outside by passing through a slit 18. The radius r of the cylinder 10 and the spacing 2R of the flanges 12, 14 may be obtained through calculation so as to suppress the increase in the losses by bending to less than the specified. Hence, the surplus lengths of the optical fibers may be treated in the narrow space with good workability and the transmission losses may be minimized.

7. 发明专利

JPS5494678A FLAT CABLE 失效
公开(公告)号：JPS5494678A
公开(公告)日：1979-07-26
申请号：JP177278
申请日：1978-01-10
申请人： FUJIKURA LTD
发明人： SUZUKI HIDEO , OOSATO KAZUKUNI
IPC分类号： H01B7/08 , G02B6/44
摘要： PURPOSE:To facilitate the lead-out by making the upper and lower portions of plastic coating contactless between metallic conductors or optical fibers. CONSTITUTION:Upper portion 220 and lower portion 222 of plastic 22 for coating the metallic conductor ( or optical fiber ) 20 are gnawed into the gap between each metallic conductor ( or optical fiber ) 20 to support them, then they are not adhered integrally but provide a space 24 between them. When leading out, random portion 26 is cut longitudinally by cutter which enables easy removal of entire plastic coating 22. Then the coating 22 and the metallic conductor ( or optical fiber ) are pulled respectively to arrow directions 28 and 30 which realizes easy leading-out.

8. 发明专利

JPH0234002B2 失效
公开(公告)号：JPH0234002B2
公开(公告)日：1990-08-01
申请号：JP9445483
申请日：1983-05-27
申请人： FUJIKURA LTD
发明人： YAMADA TAKESHI , WATANABE KO , OOSATO KAZUKUNI
IPC分类号： G02B6/24 , G02B6/255 , G02B6/38

9. 发明专利

JPS6123102A Operating mechanism for butting plate for optical fiber welding connection 失效
标题翻译：用于光纤焊接连接的平板的操作机构
公开(公告)号：JPS6123102A
公开(公告)日：1986-01-31
申请号：JP14497684
申请日：1984-07-12
申请人： Fujikura Ltd , Furukawa Electric Co Ltd:The , Nippon Telegr & Teleph Corp , Sumitomo Electric Ind Ltd
发明人： MINAMIDA ISAO , UEMATSU YUUJI , KATOU YASUYUKI , USUI YUUICHI , KAKII TOSHIAKI , YAMADA TAKESHI , OOSATO KAZUKUNI
IPC分类号： G02B6/24 , G02B6/36
摘要： PURPOSE:To utilize one kind of mechanism for two kinds of operation and to evade a component breakage accident by allowing a butting plate to penetrate the matching liquid coating hole of a matching liquid supplier vertically and providing a descent position adjusting means for the butting plate to a butting plate moving device, and combining it with the butting plate mutually. CONSTITUTION:When the end surface gap between optical fibers F1 and F2 is set, a cam 13 is rotated by a motor 12 in a specific direction to elevate the butting plate 3 through the cam 13 until its 1st front end part 3a moves to the butting position of an optical fiber end surface, which is allowed to but on the front end part 3a. In this case, when the optical fiber end surface is coated with matching liquid L, the projection piece 3d of the butting plate 3 is brought into contact with the cam surface 14 of the cam 13 at a point P1 as shown in a figure, and then the slit 9 at the 1st front end part 3a of the butting plate 3 is fitted in the matching liquid coating hole 6 of the matching liquid supplier 4 to stick the matching liquid L on the 1st front end part 3a through the slit 9 by a specific amount. On the other hand, when the end surface gap is set without applying the matching liquid L to the optical fiber end surface, the projection pieces 3d of the butting plate 3 is brought into contact with the cam surface 14 of the cam 13 at a point P2 as shown in a figure (a) and the slit 9 at the 1st front end part 3d is fitted in the matching liquid coating hole 6, so that the matching liquid L does not stick on the 1st front end part 3a of the butting plate 3.
摘要翻译：目的：利用一种机制进行两种操作，并通过允许对接板垂直穿过匹配液体供应器的匹配液体涂层孔来避免部件破损事故，并提供对接板的下降位置调整装置对接板移动装置，并将其与对接板相互组合。构成：当光纤F1和F2之间的端面间隙被设定时，凸轮13通过马达12沿特定方向旋转，以通过凸轮13升高对接板3，直到其第一前端部分3a移动到对接位于前端部3a的光纤端面的位置。在这种情况下，当光纤端面涂覆有匹配的液体L时，如图所示，对接板3的突出片3d与凸轮13的凸轮表面14接触，如图所示，然后将对接板3的第一前端部分3a处的狭缝9装配在匹配液体供应器4的匹配液体涂覆孔6中，以通过狭缝9将匹配液体L通过狭缝9粘贴在第一前端部分3a上具体数量。另一方面，当在不将匹配液体L施加到光纤端面的情况下设定端面间隙时，对接板3的突起片3d与凸轮13的凸轮面14接触 P2如图（a）所示，并且第一前端部3d的狭缝9嵌合在匹配液体涂布孔6中，使得匹配液体L不粘附在对接板的第一前端部3a上 3。

10. 发明专利

JPS60237409A SETTING METHOD OF SPACE BETWEEN END FACES OF OPTICAL FIBERS IN METHOD FOR WELDING AND CONNECTING OPTICAL FIBERS 失效
公开(公告)号：JPS60237409A
公开(公告)日：1985-11-26
申请号：JP9263684
申请日：1984-05-09
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE , SUMITOMO ELECTRIC INDUSTRIES , FUJIKURA LTD
发明人： UEMATSU YUUJI , MINAMIDA ISAO , KATOU YASUYUKI , USUI YUUICHI , KAKII TOSHIAKI , YAMADA TAKESHI , OOSATO KAZUKUNI
IPC分类号： C03B23/207 , G02B6/24 , G02B6/255
摘要： PURPOSE:To enable exact setting of a space between end faces 0 in the stage of welding and connecting by making at least once the relative movement of the end faces of optical fibers in a counter-butting direction and an axially offcentering direction in optional order. CONSTITUTION:The end faces 2A, 2B of the optical fibers are axially centered and the max. photodetection power P1 is obtd. The end 2A is moved toward the end 2B and the power attains the peak at the point P2 when the space between the end faces 3A and 3B attains zero. The end 2A, when moved further, is overpushed as shown in figure (c) and the level of the photodetection power decreases to the point P3. The end 2A is then moved in the counter-butting direction and the movement is stopped when the point P4=P2 is attained. The one end 3B is slightly moved in the axially offcentering direction and if the photodetection power does not change any more, the failure in maintaining exactly the zero space between the end faces is indicated. On the other hand, if the accuracy of the space between end faces = 0 is high, the level of the photodetection power decreases down to the point P5 and therefore the state of the exact space between the end faces = 0 is attained by moving the end 2A until the power P5 is generated by the axial offcentering operation after detection of the power P4.

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