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1. 发明专利

JPH02109006A GUIDE PIN FITTING STRUCTURE 失效
公开(公告)号：JPH02109006A
公开(公告)日：1990-04-20
申请号：JP26150488
申请日：1988-10-19
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE , NEC CORP , FUJITSU LTD
发明人： MORI TOSHIYUKI , ASAI SEIJI , IWANO SHINICHI , NAKANO KENICHI , KOMATSU YASUCHIKA , SUZUKI NORIO
IPC分类号： G02B6/38 , H01R13/64
摘要： PURPOSE:To offer an optical connector or an optic-electric multiple connector having a precise positioning mechanism and a rotation preventing mechanism of a guide pin by engaging a double face width part of the front or the rear part of an insert member provided in an optical connecting part housing and a double face width part of the guide pin. CONSTITUTION:By providing an insert member 6 finished with high accuracy in an optical connector part housing 12, and engaging the engaging part 7 of a guide 1 finished with high accuracy in the same way, a guide pin fitting structure being free from an axial shift and dislocation is obtained. Also, by engaging a double face width part 8 of the front of the optical connector part housing 12 and a double face width part 9 of the guide pin 1, a function of a guide pin turn-stop at the time of holding and fixing the housing 12 to a printed wiring board 11 with the guide pin 1 and a fixing screw 10 can be attained. Also, by providing the double face width parts 8, 9 on the part of a rear face 20 of the housing 12, as well, the guide pin turn-stop function can be attained.

2. 发明专利

JPH02245710A OPTICAL CONNECTOR 失效
公开(公告)号：JPH02245710A
公开(公告)日：1990-10-01
申请号：JP6595189
申请日：1989-03-20
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD
发明人： SUZUKI NORIO , MESAKI AKITOSHI , IWANO SHINICHI , SUGITA ETSUJI , SUZUKI KIYOTAKA
IPC分类号： G02B6/38 , G02B6/36
摘要： PURPOSE:To obtain the optical connector with which the disengagement of the mounted state is difficult by housing a ferrule inserted and fixed with an optical fiber into an optical connector body, and pressing the ferrule to the optical connector body via an energizing member by means of a holder fastened to the optical connector body. CONSTITUTION:Single or plural projections 32 each having a tapered part decreasing in width in a circumferential direction are provided on the outer periphery of a holder 8 and groove parts 34 for insertion in which the projections 32 pass are provided in the axial direction on the inside periphery of the optical connector body 6. Tapered sliding parts 36 where the tapered parts of the projections 32 slide and broad parts 38 with which the projections 32 engage are so provided in the circumferential direction of the optical connector body 6 as to be continuous from the groove parts 34 for insertion. The projections 32 of the holder 8 engage with the broad parts 38 of the optical connector body 6 and the disengagement thereof is difficult if the holder 8 is inserted to the optical connector 6 in such a manner that the projections 32 of the holder 8 pass the groove parts 34 for insertion of the optical connector body 6 and if the holder 8 is rotated in the direction where the width of the tapered part of the projections 32 degrease. The optical connector with which the disengagement of the mounted state is difficult is obtd. in this way.

3. 发明专利

JPH02114214A OPTICAL CONNECTOR 失效
公开(公告)号：JPH02114214A
公开(公告)日：1990-04-26
申请号：JP26724988
申请日：1988-10-25
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD
发明人： SUZUKI NORIO , MESAKI AKITOSHI , IWANO SHINICHI , SUGITA ETSUJI , ABE MIKIO
IPC分类号： G02B6/38 , G02B6/36
摘要： PURPOSE:To prevent release from the locked state between a holder and connector main body by interposing locking members of elastic bodies between a holder and a groove section for insertion. CONSTITUTION:When a holder 8 is turned against a connector main body 6 after the holder 8 is inserted into the connector main body 6 so that projections 16 can pass through a groove section 34 for insertion, the projections 16 of the holder 8 move along the peripheral direction of the connector main body and is locked with locking sections 20. When locking members 36 of elastic bodies are interposed between recessed sections 32 of the holder 8 and the groove section 34 for insertion of the connector main body 6 in a state where the projections are locked with the locking sections, the holder 8 cannot be turned against the connector main body in the state where the projections of the holder are locked with the locking sections of the connector main body. Therefore, release from the locked state of the holder to the connector main body becomes difficult.

4. 发明专利

JPH02281213A OPTICAL CONNECTOR 失效
公开(公告)号：JPH02281213A
公开(公告)日：1990-11-16
申请号：JP10162889
申请日：1989-04-24
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： KODAMA TOSHIRO , MORI TOSHIYUKI , IWANO SHINICHI , SUGITA ETSUJI
IPC分类号： G02B6/36 , G02B6/38
摘要： PURPOSE:To reduce splice loss and to apply an optical connector to a single mode fiber by locking a ferrule and fixing the position of the circumferential direction of the ferrule to the position where the splice loss of an optical fiber measured while the ferrule and the optical fiber are rotated around a shaft is the most excellent. CONSTITUTION:In the optical connector for connecting the optical fiber by plugging an element on a plug side where the optical fiber is provided in an element on a jack side, the element on the jack side has the ferrule 1 on the jack side, a locking part 5c which locks the ferrule 1 to a set position in a shaft direction and a holder 5 which contains them. Then, the ferrule 1 is fixed to the position where the light power value of the optical fiber 9 measured by rotating the ferrule 1 and the optical fiber 9 around the shaft is large. Thus, the splice loss is made low and the optical connector which is well attached and detached and which has excellent reproducibility where the ferrule is not rotated on the completed jack side is formed.

5. 发明专利

JPH0460504A OPTICAL CONNECTOR JACK 失效
公开(公告)号：JPH0460504A
公开(公告)日：1992-02-26
申请号：JP17003590
申请日：1990-06-29
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： KODAMA TOSHIRO , ISHIKAWA ICHIRO , IWANO SHINICHI , SUGITA ETSUJI
IPC分类号： G02B6/36 , G02B6/38
摘要： PURPOSE:To improve the reliability of connection by providing ruggedness in the parts to be respectively fitted to an external housing and an optical connector jack element to prevent rotation. CONSTITUTION:This jack has a projecting part 4c on the inside surface part at the front end of a frame 4 to prevent the forward movement of a sleeve 2. The projecting part 4b is provided together with a step for housing a flange part in the frame so as to prevent the rotation in the notched part of the flange 1a of a ferrule 1. The ferrule is then mounted on an approximately cylindrical holder 5 from behind. The projecting part 5b mating with the outer peripheral slit 4a of the frame 4 is provided in the holder 5. The projecting part 5a mounted in the notched groove 8a provided in an external housing 8 is provided on the other periphery of the holder 5 to prevent the mutual rotation. The rotation is prevented in this way and, therefore, the reproducibility is improved.

6. 发明专利

JP2001201665A PLASTIC SLIT SLEEVE AND PRECISE SLEEVE FOR CONVERSION CONNECTOR 失效
公开(公告)号：JP2001201665A
公开(公告)日：2001-07-27
申请号：JP2000342693
申请日：2000-11-09
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SHUDO YOSHITO , SATO KOJI , IWANO SHINICHI , SUMITA MAKOTO , TONO SHUNICHI
IPC分类号： G02B6/38
摘要： PROBLEM TO BE SOLVED: To provide a plastic slit sleeve and precise sleeve for a conversion connector which directly and mutually hold and connect optical fiber cords including ferrules mutually different in outside diameter in which a single mode optical fiber is internally mounted. SOLUTION: Relating to the plastic slit sleeve 52 for the conversion connector which optically connects the optical fiber by inserting the ferrules mutually different in outside diameter from both left and right ends, the plastic slit sleeve 52 for the conversion connector is formed of amorphous thermoplastic resin, thermosetting resin or resin composition, the basic shape of the plastic slit sleeve 52 for the conversion connector is formed into thick wall hollow cylindrical shapes different in inside diameter and thickness in the left and right positions, a connecting part 53 for connecting the thick wall hollow cylinders different in left and right dimensions is provided in the intermediate position, and the slit 54 is formed over the left and right thick wall hollow cylinder parts and the connecting part 53.

7. 发明专利

JP2000241663A OPTICAL CONNECTOR AND MANUFACTURE THEREOF 失效
公开(公告)号：JP2000241663A
公开(公告)日：2000-09-08
申请号：JP4381099
申请日：1999-02-22
申请人： SEIKO INSTR INC , NIPPON TELEGRAPH & TELEPHONE
发明人： SHIMADA TOMOHIRO , NAKAJIMA MASAHIRO , TAIRA JUNJI , IWANO SHINICHI , SUMITA MAKOTO
IPC分类号： G02B6/36 , G02B6/38
摘要： PROBLEM TO BE SOLVED: To facilitate assembling of an optical connector to prevent performance from being deteriorated at the time of the assembling. SOLUTION: In this optical connector, a cross-sectional shape orthogonal to an axis of the first stepped part 50 is formed into a substantially square shape larger than a diameter of an annulus ring part of a flange 20 in the flange 20 of a ferrule 5, a cross-sectional shape of a substantially square shape smaller than the diameter of the flange 20 is provided in a position adjacent to the second stepped part 80 in the other end of the flange 20, the third stepped part 70 is provided in a position where sides of the square shape is brought into parallel to sides of the square shape of the first stepped part 50, and a locking piece 100 for locking at least two opposed faces of the third stepped part 70 of the flange 20 is provided in an inside diameter of a stop ring for locking the flange 20.

8. 发明专利

JP2000056176A OPTICAL CONNECTOR 失效
公开(公告)号：JP2000056176A
公开(公告)日：2000-02-25
申请号：JP21911498
申请日：1998-08-03
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HONDA RYUJI , NAGASE AKIRA , IWANO SHINICHI , KOBAYASHI MASARU , SUMITA MAKOTO , TACHIKURA MASAO
IPC分类号： G02B6/38
摘要： PROBLEM TO BE SOLVED: To provide an optical connector preventing careless connection release of connector/plugs each other and simplifying the structure of the connector/ plug. SOLUTION: Since a first connector/plug 20 arranged in a device external side is constituted so that a ferrule 20a isn't moved in the optical axial direction, and a second connector/plug 30 arranged in a device internal side is coupled to an adapter 10 by a coupling member 40, and the second connector/plug 30 is pressurized movably in the optical axial direction by the spring part 41 of the coupling member 40, even when tensility is applied to the first connector/ plug 20 due to contact with an external object, the pressing force of the second connector/plug 30 isn't injured.

9. 发明专利

JP2000023900A CLEANING APPLIANCE FOR MULTI-FIBER OPTICAL CONNECTOR 失效
公开(公告)号：JP2000023900A
公开(公告)日：2000-01-25
申请号：JP19271998
申请日：1998-07-08
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MORINAKA AKIRA , FUKUMITSU TAKAO , NAGAI OSAMU , IWANO SHINICHI
IPC分类号： G02B6/36 , A47L25/00
摘要： PROBLEM TO BE SOLVED: To clean the broad end face of a multi-fiber optical connector and to surely remove matching grease applied on the end face. SOLUTION: This washing appliance 1 cleans the end face 4a of the multi- fiber optical connector 4 by delivering tape-like cleaning cloth 2 wound on a reel to expose the unused part thereof and pressing the end face 4a of the multi-fiber optical connector 4 to the cleaning portion of the cleaning cloth 2. In such a case, the cleaning appliance is provided with a soft rubber-like pad 3 which is arranged on the rear surface side of the cleaning portion of the cleaning cloth 2 to be subjected to pressing force to receive and has a rugged surface 3a of a period length L1 shorter than the transverse width W1 of the end face 4a of the multi-fiber optical connector 4.

10. 发明专利

JPH10221569A OPTICAL CONNECTOR STRUCTURE 失效
公开(公告)号：JPH10221569A
公开(公告)日：1998-08-21
申请号：JP3832297
申请日：1997-02-06
申请人： SANWA DENKI KOGYO CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： KAWAHARA AKIRA , SHINAGAWA YUJI , NAGASE AKIRA , IWANO SHINICHI , KOBAYASHI MASARU , HONDA RYUJI , MITACHI NARIYUKI
IPC分类号： G02B6/38 , G02B6/42
摘要： PROBLEM TO BE SOLVED: To provide a simple structured optical connector which prevents a knob and a housing from being removed, by reinforcing them. SOLUTION: In this optical connector, a knob 7 which is installed in a plug frame 1 which has a ferrule in its shaft center such that the knob can axially slide and a housing 11 which had a plug engaging piece 13 projected into a central plug insertion hole 12 are fixed each other by engaging means. One end of the connector is formed in a connector plug (A), and another end is formed in a connector joint (B). The knob 7 and the circumference of the housing 11 are covered and pressure bonded by metal plates 17, 18.

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