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1. 发明专利

JPS6370810A OPTICAL CONNECTOR 失效
公开(公告)号：JPS6370810A
公开(公告)日：1988-03-31
申请号：JP21678586
申请日：1986-09-12
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KASHIHARA TSUGUJI , KAKII TOSHIAKI
IPC分类号： G02B6/38
摘要： PURPOSE:To easily couple and release on optical connector, to improve its manufacturing property, and to miniaturize said connector by forming a sectional shape of an optical connector adaptor to a regular square, providing a fitting hole on the sides opposed to each other, and providing a projection fitted to the fitting hole, on a cap for pressing and fixing an optical connector ferrule in the axial direction. CONSTITUTION:An optical connector adaptor 1 whose sectional shape is a regular square has a split sleeve 2 for positioning and coupling an optical connector ferrule 3 which has been attached to the end part of an optical fiber core wire 7, and a fitting hole 6 is provided on two sides opposed to each other, of an inserting part of a cap 4. The cap 4 is inserted into the end part of the optical connector adaptor 1 and presses the optical connector ferrule 3 in the axial direction through a pressure spring 8, has two pieces of projections 5 which are fitted into the fitting holes 6 of the adaptor, inserted in such a direction as the projection 5 of the cap 4 is positioned in the diagonal line direction of the adaptor at the time of coupling, and constituted so that coupling is realized easily by rotating the cap 4 and fitting the projection 5 into the fitting hole 6 of the adaptor 1.

2. 发明专利

JP2000098183A OPTICAL CONNECTOR 失效
公开(公告)号：JP2000098183A
公开(公告)日：2000-04-07
申请号：JP26646798
申请日：1998-09-21
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： ISHIDA HIDETOSHI , SAOTOME HIROYUKI , YOKOMACHI YUKIHIRO , KASHIHARA TSUGUJI
IPC分类号： G02B6/38 , G02B6/40
摘要： PROBLEM TO BE SOLVED: To provide an easy-to assemble optical connector from which a fear of disassembling of a housing by an external tension is eliminated. SOLUTION: An optical connector is assembled by pushing a push rod 2 from behind in the state in which an optical connector ferrule 3 is inserted into a casing 1. The push rod 2 is provided with a pair of latching pawls 2a, on which projecting latched parts 2b, 1st reception parts 2c, and 2nd reception parts 2d are formed. On the casing, latching recess parts 1b are formed. When the push rod 2 is pushed in, a pair of the latching pawls each are elastically deformed inside and inserted into the casing, and are released from the elastic deformation when the projecting latched parts reach the latching recess parts, and the projecting latched parts are latchingly engaged into the latching recess parts, and an end ring 4a of a coil spring 4 enter between a pair of the latching pawls and prevents them from being deformed inside again.

3. 发明专利

JPS6466607A ATTACHING/DETACHING JIG FOR OPTICAL CONNECTOR 失效
公开(公告)号：JPS6466607A
公开(公告)日：1989-03-13
申请号：JP22437587
申请日：1987-09-08
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KASHIHARA TSUGUJI , KAKII TOSHIAKI
IPC分类号： G02B6/38
摘要： PURPOSE:To exactly attach and detach only one plug by using a plug inserting sleeve having a hole part engaged to an optical connector plug in one end, and an attaching/ detaching jig of a cylindrical body having a projection at the tip in the other end. CONSTITUTION:At the time of coupling an optical connector, an optical fiber cord A in which an optical connector plug 20 is installed at the tip from a slot part 15 of an optical connector attaching/detaching jig 10 is allowed to pass through the inside of the jig 10. Subsequently, a plug inserting and holding part 21 of the plug 20 is engaged to a hole part 12 in a plug inserting sleeve 11 formed in one end of the jig 10. In such a state, by grasping a handle 17 of the jig 10 and inserting the optical connector plug 20 into an optical connector adaptor 30, coupling is realized, and thereafter, the jig 10 is drawn and removed. Next, at the time of releasing the coupling of the optical connector, the cord A is allowed to pass through the inside of the jig 10 from the slot 15 of the jig 10, and the jig 10 is inserted into the plug 20. In such a case, a projection 14 provided on the tip of a claw part 13 is fitted into a groove part 23 of the outside periphery of a plug drawing-out and holding part 22. In such a state, when the jig 10 is drawn, the plug 20 is drawn out of the adaptor 30.

4. 发明专利

JPS6431104A OPTICAL CONNECTOR COUPLING SLEEVE 失效
公开(公告)号：JPS6431104A
公开(公告)日：1989-02-01
申请号：JP18835287
申请日：1987-07-27
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KAKII TOSHIAKI , KASHIHARA TSUGUJI , KOMIYA TAKEO
IPC分类号： G02B6/38
摘要： PURPOSE:To facilitate the attachment and detachment of an optical connector by providing an expansion member which engages lengthwise part of the slit of a split sleeve and moves the sleeve radially to vary the inside diameter of the sleeve. CONSTITUTION:The split sleeve 1 which has the lengthwise slit 11 and the expansion member 2 which engages the slit 11 are provided and the flank of the expansion member 2 is a tapered surface which decreases in width downward gradually. The insertion of the expansion member 2 increases the width of the slit 11 and the inside diameters of the split sleeve 1 vary so that phiD1 phiD1, but the clamping force on the ferrule B is eliminated at the time of phiD0

5. 发明专利

JPS6394206A OPTICAL CONNECTOR FERRULE 失效
公开(公告)号：JPS6394206A
公开(公告)日：1988-04-25
申请号：JP24107286
申请日：1986-10-08
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KAKII TOSHIAKI , KASHIHARA TSUGUJI
IPC分类号： G02B6/36
摘要： PURPOSE:To reduce the thickness of the collar part of a sleeve coupling part where a ferrule fits to a sleeve and to permit the miniaturization of the ferrule by forming the outside peripheral part and collar part of the sleeve coupling part of a reinforcing pipe and forming the inside of a molding resin. CONSTITUTION:The outside peripheral part and collar part 2 of the sleeve coupling part 1 where the ferrule and the sleeve fit to each other is formed of the reinforcing pipe 3 and the inside is formed of the molding resin 4. The pipe 3 for reinforcing the outside peripheral and collar parts of the sleeve coupling part is formed of an integrally worked metal. The inside surface of the pipe 3 is worked with ruggedness 6 and a step 5 is worked in the collar part 2 to increase the joint area between the pipe 3 and the internal molding resin part 4 and to improve the adhesiveness. The outside peripheral part and collar parts of the sleeve coupling part are formed of the reinforcing pipe in the above- mentioned manner, by which the thickness of the collar part (outside diametral step) is decreased to about 0.3mm. The miniaturization of the ferrule is thereby permitted.

6. 发明专利

JPH10170764A OPTICAL FIBER CONNECTOR 失效
公开(公告)号：JPH10170764A
公开(公告)日：1998-06-26
申请号：JP33601096
申请日：1996-12-16
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KASHIHARA TSUGUJI , KOTODA YUTAKA , TOYOOKA HIROYASU
IPC分类号： G02B6/38 , G02B6/40
摘要： PROBLEM TO BE SOLVED: To reduce the connection loss fluctuation caused by performing and not performing PC coupling, and connection loss fluctuation caused by multiple reflection by constituting an optical fiber connector pulling core sections at the coupling end parts of optical fibers into a clad. SOLUTION: In order to average a connection loss without performing PC coupling on the end faces of optical fibers to be coupled, the clad is pulled in more than the core on the end face of optical fiber. Namely, the top end position of end face of core is always positioned equally with the top end position of end face of clad or pulled inside more than it. On the end face of optical fiber 10 composed of a core 10a and a clad 10b surrounding it, for example, the core 10a is pulled with respect to the clad 10b while having a recessed curved surface. Otherwise, the clad and the core are formed into continuous recessed curved surface on the end face of optical fiber and the central section of core is most pulled inside. Otherwise, the outer peripheral edge of clad is rounded.

7. 发明专利

JPH0968627A OPTICAL CONNECTOR 失效
公开(公告)号：JPH0968627A
公开(公告)日：1997-03-11
申请号：JP22290195
申请日：1995-08-31
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： TAMEKUNI YOSHIAKI , KASHIHARA TSUGUJI , FUKUSHI KATSUNORI , NAGASAWA SHINJI
IPC分类号： G02B6/38 , G02B6/40
摘要： PROBLEM TO BE SOLVED: To provide an optical connector which is smoothly attachable and detachable. SOLUTION: This optical connector has a pair of ferrules 1 which hold plural optical fibers 5 and have guide pin holes 3 disposed perpendicularly at end faces 1-1 and guide pins 2 which align the axes of the optical fibers 5 by being inserted into these guide pin holes 3. The optical connector integrally connects the optical fibers 5 by joining the end faces of the ferrules. The guide pins 2 constitute circular cylindrical bodies and tapers of at least >=2mm are formed at their front ends. Further, the edges of the guide pin holes 3 are preferably provided with tapers.

8. 发明专利

JPH0915453A OPTICAL CONNECTOR 失效
公开(公告)号：JPH0915453A
公开(公告)日：1997-01-17
申请号：JP16854395
申请日：1995-07-04
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HONMA TOSHIHIKO , HASEBE HIROSHI , KASHIHARA TSUGUJI
IPC分类号： G02B6/38 , G02B6/26 , G02B6/40
摘要： PROBLEM TO BE SOLVED: To provide an optical connector having a dust-proof effect. SOLUTION: In this connector, the end faces of a pair of ferrules 1 and 1 holding plural coated optical fibers 5 are aligned and butted by guide pins 2 and 2, and space between the butting surface of the end faces is filled with matching oil, thereby coupling the coated optical fibers. The leading edge parts of guide holes 3 and 3 in which the guide pins 2 and 2 are fitted have nearly the same size as the guide pin, and holes 6 and 6 having a larger diameter than that of the guide pin are bored on the ferrule end face sides of the guide pin holes.

9. 发明专利

JPH0256505A BRANCHING PART FOR COATED OPTICAL FIBER TAPE 失效
公开(公告)号：JPH0256505A
公开(公告)日：1990-02-26
申请号：JP20866788
申请日：1988-08-23
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： OKURA TOSHIHIKO , HIRAO KOJI , WATANABE TETSUAKI , KASHIHARA TSUGUJI
IPC分类号： G02B6/24 , G02B6/00 , G02B6/38 , G02B6/44 , H01B7/00
摘要： PURPOSE:To obviate the exertion of a stress on optical fibers and to suppress the increase of the transmission loss of light by putting a manifold constituted of a coated tape fiber fixing part, branch housing space and coated single fiber protecting parts on coated tape fibers branched at the front ends, thereby forming the branching part. CONSTITUTION:The coated tape optical fiber branch part A is formed by inserting the coated tape optical fibers 1 the front ends of which are branched to single fibers into the manifold B from the coated tape fixing part 2 thereof, passing the fibers through the protective parts 5 of the respective branched single fibers 4 and fixing the tape fibers 1 by the coated tape fixing part 2. Since the direct contact of the single fibers formed by branching the coated tape fiber with an adhesive agent and resin is obviated, the exertion of the stress on the optical fibers is obviated in the process when the adhesive agent cures to the resin and the increase of the transmission loss of the light in the production process is prevented.

10. 发明专利

JPS63172106A OPTICAL CONNECTOR 失效
公开(公告)号：JPS63172106A
公开(公告)日：1988-07-15
申请号：JP385787
申请日：1987-01-09
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KAKII TOSHIAKI , KASHIHARA TSUGUJI
IPC分类号： G02B6/36 , G02B6/38
摘要： PURPOSE:To reduce the coupling loss of a single mode fiber by giving certain correlations between the direction of eccentricity of the optical fiber guide hole of an optical connector ferrule and the direction of coupling of an optical connector plug to an adapter to attach the optical connector ferrule to the optical connector plug. CONSTITUTION:An optical connector ferrule 1 consists of a collar part 11, a resin molded part 12, a coupling part 14 around which a metallic pipe 13 is formed into one body, and an internally provided optical fiber guide hole 15. An extent 16 and a direction 18 of eccentricity of the optical fiber guide hole to the ferrule are precisely measured, and a mark 17 or a ruggedness 19 indicating the direction of eccentricity is provided on outside peripheral surfaces of ferrule collar parts 11 and 11'. The mark 17 on the optical connector ferrule 1 where this mark 17 of the eccentricity direction 18 is provided on one side of the regularly polygonal collar part 11 of the ferrule and a projecting part 3 provided on the outside peripheral surface of an optical connector plug 2 are allowed to correspond to each other to attach the optical connector ferrule 1 to the optical connector plug 2, and the direction of eccentricity of the optical fiber guide hole 15 is limited to a certain angular range to perform coupling. Thus, coupling is performed with a very small loss relatively easily.

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