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131. 发明专利

JPH0545538A OPTICAL CONNECTOR STRUCTURE 失效
公开(公告)号：JPH0545538A
公开(公告)日：1993-02-23
申请号：JP20425891
申请日：1991-08-14
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NAGASE AKIRA , IWANO SHINICHI , KANAYAMA KAZUNORI , ANDO YASUHIRO , YASUDA KEIICHI
IPC分类号： G02B6/38 , G02B6/36 , G02B6/40
摘要： PURPOSE:To provide the optical connector structure which has both functions of improvement in strength against a lateral load and reverse insertion prevention while structure which enables high-density packaging and size reduction is maintained. CONSTITUTION:The structure of an optical connector consists of an optical connector plug 11 which holds a ferrule 13 where an optical fiber 12 is mounted and a housing 16 for the optical connector where the optical connector plug 11 is mounted and held, and the optical connector plug 11 consists of a plug housing 14 wherein the ferrule 13 is incorporated and a knob 17 mounted slidably on its periphery and cross section is almost a rectangular shape at right angles to the axis of the ferrule 13; and a groove 18 and a detaining linear projection 41 are formed in a couple of opposite flanks which are symmetrical with respect to a plane along the axis of the ferrule 13 at positions where they do not interfere with each other and other opposite flanks are not symmetrical with respect to a plane. The connector plug housing 15 has two detaining engagement grooves for detaining the detaining projections in the internal surface of the insertion hole for the optical connector plug 11.

132. 发明专利

JPH04281409A FERRULE FOR OPTICAL CONNECTOR 失效
公开(公告)号：JPH04281409A
公开(公告)日：1992-10-07
申请号：JP4525391
申请日：1991-03-11
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NAGASE AKIRA , ANDO YASUHIRO
IPC分类号： G02B6/36 , G02B6/38
摘要： PURPOSE:To reduce deterioration in the extinction ratio of a polarization maintaining optical fiber due to residual stress when the polarization maintaining optical fiber is adhered to the ferrule and then a flange is fitted by employing structure wherein the flange can not move beyond a projection or step provided at the outer periphery of the front end part of the sleeve when pressed in. CONSTITUTION:A flanged projection 32 is formed at the front end of the sleeve 31 of the ferrule 1 which holds an optical fiber inside and the flange 33 is pressed in the sleeve 31 of the ferrule 1. The pressed-in flange 33 stops while abutting on the projection 32 of the sleeve 31, so even while the pressure of a spring operates on the flange 33 after assembly, the flange 33 never comes out toward the front end of the ferrule 1. The projection 32 which receives the spring pressure applied to the flange 33 is provided previously to the sleeve 31 where the flange 33 is pressed in, so sufficient fixation strength for the spring pressure is obtained without making a pressing-in margin large.

133. 发明专利

JPH03164704A FLOAT STRUCTURE OF PLUG-IN CONNECTOR 失效
公开(公告)号：JPH03164704A
公开(公告)日：1991-07-16
申请号：JP30318589
申请日：1989-11-24
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： IWANO SHINICHI , SUGITA ETSUJI , NAGASE AKIRA , KANAYAMA KAZUNORI
IPC分类号： G02B6/38
摘要： PURPOSE:To improve accuracy by fitting a fitting member having a float hole in the through-hole bored in a package, inserting the float stem part of a housing in alignment into the float hole and mounting a fixing member to the front end of the float stem part. CONSTITUTION:This structure has the through-hole 29 provided in the package 25, the disk-shaped member 30 bored with the float hole 33, a holding surface 26 consisting of one face of the housing 23, the shaft-like projecting part 27 which is projectingly provided integrally from this holding surface 26 and is inserted into the float hole 33, and the planar fixing member 28 of the outside diameter larger than the through-hole 29 fixed in the projecting part 27. The package 25 is sandwiched by the holding surface 26 and the fixing member and the housing 23 is so provided as to be held afloat to the package 25 by the spacing between the float stem part 35 formed in a part of the projecting part 27 and the float hole 33. The float holding structure of the good accuracy is thus obtd. with the simple and compact structure at the time of holding the package side housing afloat to the package.

134. 发明专利

JPH03131804A OPTICAL FIBER CONNECTION TERMINAL FOR OPTICAL CONNECTOR 失效
公开(公告)号：JPH03131804A
公开(公告)日：1991-06-05
申请号：JP26808889
申请日：1989-10-17
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： OGUCHI TAISUKE , NODA JUICHI , NAGASE AKIRA , SUGITA ETSUJI
IPC分类号： G02B6/36 , G02B6/26 , G02B6/38
摘要： PURPOSE:To stabilize optical coupling between fibers by coupling and fixing optical fibers, which are cut by the insertion of an optical control member, by pipe-shaped glass which has an internal diameter a little larger than the external diameter of the optical fibers and an external diameter a little smaller than the internal diameter of a flange part. CONSTITUTION:The optical control member 36 is inserted into the flange part 32 and the fibers 33a and 34a which are cut by the insertion of the optical control member 36 are coupled and fixed by the pipe-shaped glass 38 which has the internal diameter a little larger than the external diameter of the fibers 33a and 34a and the external diameter a little smaller than the internal diameter of the flange part 32. Then the jackets of parts of the optical fibers 33 and 34 which are inserted into the glass pipe 38 and a fitting part 31 are removed to expose the fibers 33a and 34a themselves. Therefore, the optical fiber 33 has the optical fiber 33a exposed entirely, the optical fibers 33a and 34a in the glass pipe 38 are adhered by the glass fiber, and the part of the optical fiber 34 where its jacket is not removed is adhered to the flange part 32. Consequently, the stable connection terminal which is incorporated in the optically coupled optical control member can be realized.

135. 发明专利

JPH0220811A OPTICAL CONNECTOR LOCK 失效
公开(公告)号：JPH0220811A
公开(公告)日：1990-01-24
申请号：JP17057588
申请日：1988-07-08
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KANAYAMA KAZUNORI , SUGITA ETSUJI , IWANO SHINICHI , NAGASE AKIRA
IPC分类号： G02B6/38
摘要： PURPOSE:To easily and securely prevent a plug form coming out erroneously by providing a mechanism part for fixing an optical connector to a hood behind the plug and a structure part which covers a frame while the optical connector is fixed to the hood. CONSTITUTION:The optical connector lock 1 is set having lock claws 4 opposite the plug 10 and an optical fiber cord 13 is passed through a slit 5 and run through a through hole 2. Then the upper and lower flanks of the optical connector lock 1 are held and put close to the plug 10 from behind and the hood 12 is run between the lock claws 4 and through the through hole 2 to press the hood 12 by the upper and lower lock claws 4 and the internal flank of the through hole 2, so that the hood 12 deforms elastically. Further, the optical connector lock 1 is moved forth to before the plug 10 and the lock claws are inserted into the gap between the frame 11 and hood 12 under the guidance of a chamfered part 4'', thereby locking the optical connector while bringing the rear end of the frame 11 into contact with the internal bottom part of the lock 1. Consequently, the optical connector lock 1 locks the plug 10 to an adapter 15 to prevent the plug 10 from coming out erroneously.

136. 发明专利

JPH01232308A ASSEMBLING TOOL AND ASSEMBLING METHOD FOR OPTICAL CONNECTOR PLUG 失效
公开(公告)号：JPH01232308A
公开(公告)日：1989-09-18
申请号：JP5849888
申请日：1988-03-14
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NAGASE AKIRA , NODA JUICHI , SUGITA ETSUJI
IPC分类号： G02B6/36
摘要： PURPOSE:To easily adjust the direction of the main axis of an optical fiber by providing a ferrule fixing part which fixes a ferrule, an optical fiber fixing part which fixes the optical fiber and a turning member which mounts the optical fiber fixing part. CONSTITUTION:The optical fiber fixing part 3 is mounted to the turning member 4 and can rotate optical fiber 5 around its axis and, therefore, the direction of the main axis of the optical fiber 5 can be set in a prescribed direction by rotating the fiber while observing the end face of the optical fiber 5 projecting from the end face of, for example, the ferrule 2 with a microscope. The ferrule fitting part is held by a V-groove 1f and a press plate 1b and a key 1d is engaged with a keyway 2c, by which the ferrule is positioned with respect to the angle around the axis thereof. The ferrule is mounted in the specified direction in spite of the presence of a tolerance size in the width of the keyway 2c by tapering the front end of the key 1d and using a spring 1e.

137. 发明专利

JPS63239407A OPTICAL CONNECTOR 失效
公开(公告)号：JPS63239407A
公开(公告)日：1988-10-05
申请号：JP7175387
申请日：1987-03-27
申请人： NIPPON TELEGRAPH & TELEPHONE , NEC CORP , FUJITSU LTD , HITACHI LTD
发明人： IWASA KYOICHI , NAGASE AKIRA , MORIMOTO YOSHITAKA , SUZUKI NORIO , KODAMA TOSHIRO
IPC分类号： G02B6/36 , G02B6/38
摘要： PURPOSE:To improve the clamping strength between an adapter and a plug by making the coefficient of friction between the locking claw and clamping projection of an optical connector larger than a specific value, and then preventing the locking claw from disengaging from the clamping projection and allowing an optical cord to withstand tensile force up to the rupture strength of an elastic locking piece when the tensile force is applied to the optical cord. CONSTITUTION:When the optical connector and plug is coupled with each other, the tip side of the elastic piece 4 of the elastic locking piece 3 supported in a cantilever shape in the housing 2 of the connector hops up a constant quantity from the center axis 4a of the elastic piece 4 penetrating a support part 2a to lock the locking claw 6 to the clamping projection 13. When the distance between the center axis 4a of this elastic piece 4 and the point where the locking claw 6 and clamping projection 13 contacts each other is denoted as S and the distance between the support part of the elastic piece 4 and the point where the locking claw 6 is brought into contact with the clamping projection 13 is denoted as l, the coefficient mu of friction between the locking claw 6 and clamping projection 13 is so set that mu>=3S/2.

138. 发明专利

JPS63231408A OPTICAL CONNECTOR 失效
公开(公告)号：JPS63231408A
公开(公告)日：1988-09-27
申请号：JP6437187
申请日：1987-03-20
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NAGASE AKIRA , SUGITA ETSUJI
IPC分类号： G02B6/38
摘要： PURPOSE:To obtain an optical connector which permits high-density packaging by providing a pair of ferrules fixed with ends of two optical fibers, an elastic sleeve and a spring for application of pressing force to the connector and specifying the pressing force, sleeve holding force, the length of a fitting part as well as the inside surface area and bending rigidity of the sleeve. CONSTITUTION:The following equation is required to be satisfied when the inside surface area of the sleeve 4 is designated as S, the pressing force of the ferrule 2 as FA and the sleeve holding force as FR: 2.8 +1.5 when the outside diameter of the ferrule is designated as D. The stable characteristics are thereby obtd. even if the outside diameter of the ferrule is set in a >=1mm and

139. 发明专利

JPS6318307A PRODUCTION OF CONNECTOR PLUG FOR OPTICAL FIBER 失效
公开(公告)号：JPS6318307A
公开(公告)日：1988-01-26
申请号：JP16334086
申请日：1986-07-11
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SHINTAKU TOSHIHIRO , NAGASE AKIRA
IPC分类号： G02B6/38
摘要： PURPOSE:To obtain a connector plug for an optical fiber having high accuracy with ease of working by fining the front end of a ferrule consisting of a hard material and dropping an adhesive agent to the end face thereof to form the soft front end including the optical fiber. CONSTITUTION:A ferrule aligning part 5 consists of ceramics such as zirconia and alumina and the front end thereof is formed to a circular truncated cone shape of the diameter decreasing gradually toward the front end. The adhesive agent 6 is packed into the ferrule 3 and the covering 2 at the front end of the optical fiber 1 is removed. The adhesive agent 6 is coated on the front end and such front end is inserted into the ferrule 3 and is pushed therein until the front end of the optical fiber 1 projects through a small hole 5b from the end face 5c of the front end 5a of the ferrule. The adhesive agent 7 is then dropped over the entire surface of the end face 5c and is cured in such a manner that the adhesive agent 7 includes the optical fiber 1. The front end of the optical fiber 1 is then cut off and the end face of the fiber is polished slightly flat together with the adhesive agent 7.

140. 发明专利

JP2008064993A Optical connector 有权
标题翻译：光学连接器
公开(公告)号：JP2008064993A
公开(公告)日：2008-03-21
申请号：JP2006241978
申请日：2006-09-06
申请人： Hirose Electric Co Ltd , Nippon Telegr & Teleph Corp , ヒロセ電機株式会社 , 日本電信電話株式会社
发明人： KOBAYASHI MASARU , NAGASE AKIRA , ABE YOSHITERU , SANO YOSHIAKI , SHIBUYA MICHITOMO
IPC分类号： G02B6/36
摘要： PROBLEM TO BE SOLVED: To provide a plug-in type optical connector which connects optical fibers in physical contact between board members via small connection holes.
SOLUTION: The optical connector 10 according to this invention is provided with: a housing position correction means which are formed on a plug housing 13 and a jack housing 16 and for correcting the relative displacement; housing connection means 20 and 22 which are formed on the plug housing 13 and the jack housing 16, and can connect the housings 13 and 16 by being engaged with each other so as to keep the connected state of a first optical fiber 11 and a second optical fiber 14; connection release means 26 and 27 which are provided on at least one of the plug housing 13 and the jack housing 16 and can release the connected state of the housing connection means 20 and 22; and a frame position correction means which is formed at the outside of the frame 21 of an optical plug 12, and at the jack housing 16 and an optical jack 15, and for correcting the relative displacement of the optical plug 12 and the optical jack 15.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种插入式光连接器，其通过小的连接孔连接板构件之间物理接触的光纤。解决方案：根据本发明的光学连接器10设置有：壳体位置校正装置，其形成在插头壳体13和插座壳体16上并用于校正相对位移; 壳体连接装置20和22，其形成在插头壳体13和插座壳体16上，并且可以通过彼此接合来连接壳体13和16，以便保持第一光纤11和第二光纤11的连接状态光纤14; 连接释放装置26和27，其设置在插头壳体13和插座壳体16中的至少一个上，并且可以释放壳体连接装置20和22的连接状态; 以及框架位置校正装置，其形成在光学插头12的框架21的外侧，并且在插座壳体16和光学插座15处，并且用于校正光学插头12和光学插孔15的相对位移版权所有（C）2008，JPO＆INPIT

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