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1. 发明专利

JP2000139017A MULTIPAIR MAIN LINE CABLE WITH CONNECTOR 失效
公开(公告)号：JP2000139017A
公开(公告)日：2000-05-16
申请号：JP30891098
申请日：1998-10-29
申请人： FURUKAWA ELECTRIC CO LTD
发明人： SAITO MINORU , SAITO KIYOSHI , YAMAMOTO SHOJI
IPC分类号： H02G1/14 , H02G3/38 , H02G15/08
摘要： PROBLEM TO BE SOLVED: To make easier the manufacture of a multipair main line cable with connector and to make connectors to be connected easily by making a plurality of pairs of conductors collectively connectable when branch cables are connected on each floor after the main line cable is vertically laid through a building. SOLUTION: At the connecting spots of the branch cables of a multipair main line cable 1, the conductors 2 of the cable 1 are exposed by stripping off the sheath 3 of the cable 1 and flat type multipair connectors 4 are connected to part of the conductors 2A. Then molded resin sections 5 are formed so as to bury the connectors 4 and conductors 2. On the front side of each connector 4, a guiding flat surface 7 is formed for guiding the other-side connector 6 and, on the back side of the connector 4, a recessed section 9 is formed for inserting a connector connecting tool.

2. 发明专利

JPH11122760A PARTITION PANEL AND WIRING METHOD USING THE PARTITION PANEL 失效
公开(公告)号：JPH11122760A
公开(公告)日：1999-04-30
申请号：JP28356697
申请日：1997-10-16
申请人： FURUKAWA ELECTRIC CO LTD
发明人： SAITO MINORU , YAMAMOTO SHOJI
IPC分类号： E04B2/74 , H02G3/38 , H02G3/28
摘要： PROBLEM TO BE SOLVED: To provide a partition panel which facilitates wiring and connection of communication cables in a room and facilitates quick construction and change of communication lines and a wiring method using the partition panel. SOLUTION: A partition panel 1 (type-A partition panel) which has a built-in connection box 2 having a primary side connector 9 connected to a trunk line and a secondary side connector 13 connected to the primary connector and built-in cable storage units 6 and 7, and partition panels 5a and 5b (type-B partition panels) to which outlets 3 are attached and which have built-in connectors 4 connected to the outlets 3 and the built-in cable storage units 6 and 7, are arranged into a required layout. The secondary side connector 13 of the Type-A partition panel 1 is connected to the connectors 4 connected to the outlets 3 of the type-B partition panels 5a and 5b with cables which have connectors on their both ends.

3. 发明专利

JPH0546925B2 失效
公开(公告)号：JPH0546925B2
公开(公告)日：1993-07-15
申请号：JP17388384
申请日：1984-08-21
申请人： FURUKAWA ELECTRIC CO LTD
发明人： CHIBA KAZUO , YAMAMOTO SHOJI
IPC分类号： G02B6/44 , H01B13/00

4. 发明专利

JPH05151846A MANUFACTURE OF FOAMED-INSULATION LAYER CLAD ELECTRIC WIRE 失效
公开(公告)号：JPH05151846A
公开(公告)日：1993-06-18
申请号：JP12493392
申请日：1992-05-18
申请人： FURUKAWA ELECTRIC CO LTD
发明人： HASHIMOTO MASARU , YAMAMOTO SHOJI , IWATA YOSHISUKE
IPC分类号： B29C47/02 , C08L27/12 , H01B3/44 , H01B13/14
摘要： PURPOSE:To manufacture a small-thickness and fine-diameter foamed insulation layer clad electric wire which has an insulation layer having a high foam rate and an excellent outer appearance, and is suitable as a signal transmission electric wire in term of the performance such as a signal transmission speed, etc. CONSTITUTION:A thermally meltable fluorine resin is supplied to an extruder, and is melted. Then, a liquid foaming agent is injected into the molten material. Then, the molten fluorine resin and the foaming agent are kneaded together, and the foaming agent is uniformly dispersed into the resin. Thereafter, the resulting fluorine resin is extruded and coated onto a conductor, and this resin is foamed to thereby form a foamed-insulation layer clad electric wire. A fluorine-based foaming agent having as a main component at least one kind of fluorocarbon having a molecular weight of approximately 338 to 488 is used as the foaming agent.

5. 发明专利

JPH052938A ELECTRIC WIRE WITH FOAMED INSULATOR AND ITS MANUFACTURE 失效
公开(公告)号：JPH052938A
公开(公告)日：1993-01-08
申请号：JP15335291
申请日：1991-06-25
申请人： FURUKAWA ELECTRIC CO LTD
发明人： TANAKA TOSHIYA , YAMAMOTO SHOJI , OISHI YOSHIAKI
IPC分类号： B29C47/02 , C09D5/25 , H01B3/44 , H01B7/02 , H01B13/14
摘要： PURPOSE:To prevent deformation or fusion of a foaming layer even in the case the electric wire concerned is embodied as a coaxial multi-flat cable, by forming the foaming layer from a certain amount of ethylene series copolymer and polypropylene, and specifying the degree of foaming over 70%. CONSTITUTION:A resin compound is prepared by adding a foaming agent to a resin admixture consisting of 80-97 parts by wt. ethylene series coplymer and 3-20 parts by wt. polypropylene, and a conductor is covered with this resin compound and a polypropylene not containing foaming agent, which is conducted simultaneously. The resin compound is left foaming at a degree of foaming over 70%. A solid layer is formed from polypropylene, and conductor having a certain dia. is simultaneously covered with resin compound for the foaming layer and polypropylene for solid layer by the use of an extruding machine which is fitted with a common head. Accordingly the degree of foaming is held over 70% even in the case the dia. is as thin as 1mm or less, so that the requirements about the signal transfer delay time imposed on a coaxial multi-flat cable can well be met, and destruction of the foaming layer can be prevented even in the case the electric wire is embodied as a coaxial multi-flat cable.

6. 发明专利

JPH04280006A FLAT CABLE 失效
公开(公告)号：JPH04280006A
公开(公告)日：1992-10-06
申请号：JP4202491
申请日：1991-03-07
申请人： FURUKAWA ELECTRIC CO LTD
发明人： TANAKA TOSHIYA , YAMAMOTO SHOJI , OISHI YOSHIAKI
IPC分类号： H01B7/08 , H01B11/06
摘要： PURPOSE:To provide sufficient strength of fusion to a fused portion and also facilitate such end working, as peeling processing of a sheath layer, etc. CONSTITUTION:A flat cable 10 is made up by arranging in parallel a plurality of single wire 17 consisting of an insulated wire 13 made up by covering the circumferential face of a conductor 11 with an insulator 12, a drain wire 14 longitudinally laid along the insulated wire 13, an electromagnetic wave shielding layer 15 with which the circumferential face of the insulated wire 13 including the drain wire 14 is covered and a sheath layer 16 with which the circumferential face of the electromagnetic wave shielding layer 15 is covered. The sheath layer 16 is made up of a resin composition containing a base material where polyvinyl chloride and ethylene-vinyl chloride copolymer are mixed together at a ratio of 25:75 or 45:55 by weight.

7. 发明专利

JPH03231825A SCREW FOR EXTRUDER 失效
公开(公告)号：JPH03231825A
公开(公告)日：1991-10-15
申请号：JP2611990
申请日：1990-02-07
申请人： FURUKAWA ELECTRIC CO LTD
发明人： OKADA KENJI , YAMAMOTO SHOJI
IPC分类号： B29C47/60 , B29C45/60
摘要： PURPOSE:To deepen a channel depth in a feed portion without reducing the torsional strength of the feed portion and stabilize the introduction of an extrusion material by making the width of a flight in the feed portion wider. CONSTITUTION:The width W of a flight 3 in the compression portion C of a screw is arranged wider than that in the metering portion M thereof, and the width of the flight in the feed portion F wider than that in the compression portion C. In this case, the flight 3 is shaped into a spiral form and, therefore, when the width W of the flight 3 is widened provided that the depth G of a screw channel 2 is specified, the cross-sectional area of the screw is increased by that much to make the torsional strength of the screw greater. Accordingly, if the width of the flight 3 in the feed portion F is made wider, it becomes possible that the channel depth in the feed portion F is made deeper without reducing the torsional strength of the feed portion F, thus improving the introduction of an extrusion material and stabilizing an extruder output.

8. 发明专利

JPH0227618A MANUFACTURE OF COAXIAL MULTI-FLAT CABLE 失效
公开(公告)号：JPH0227618A
公开(公告)日：1990-01-30
申请号：JP17759388
申请日：1988-07-16
申请人： FURUKAWA ELECTRIC CO LTD
发明人： YAMAMOTO SHOJI
IPC分类号： H01B13/22 , H01B13/00
摘要： PURPOSE:To enable an end-treatment with ease with a drain-wire not falling out when a sheath is removed, by furnishing a metallic layer on the side in contact with a shielding layer, and a hot-melt resin on the side of an insulated wire, out of drain-wires, melting the resin by heat produced when the sheath is formed, and welding it to the insulated wire. CONSTITUTION:An insulating material such as a high foaming polyethylene, or high foaming polypropylene and the like is used for the insulated layer 13 of an insulated wire 1. For these insulating materials are liable to be slippery against a drain wire 2, the surface of the drain-wire 2 in contact with the insulating wire 1 is provided in advance with such a hot-melt resin 8 as an ethylene vinyl acetate copolymer, an ethylene ethyl acrylate, or Bond-fast, or the like, and the hot-melt resin 8 which is heated and melted by heat at the time of forming the sheath 4 is fused on the insulating wire 1. Consequently, the drain- wire 2 does not fall out at the time of removal of the sheath, and treatment and processing may be carried out with ease.

9. 发明专利

JPS63310506A FOAM INSULATING ELECTRIC WIRE 失效
公开(公告)号：JPS63310506A
公开(公告)日：1988-12-19
申请号：JP14675287
申请日：1987-06-12
申请人： FURUKAWA ELECTRIC CO LTD
发明人： YAMAMOTO SHOJI , AKIMOTO KOICHI
IPC分类号： H01B7/02
摘要： PURPOSE:To obtain an excellent mechanical strength and to maintain also a high foaming rate by forming to make the foaming rate at the part of a foaming insulator to cover conductors near the conductors higher than that at the part near the outer surface of the foaming insulator. CONSTITUTION:A foam insulating wire 3 is formed by covering conductors 1 with a foaming insulator 2 which has numerous hollow foams therein. And the foaming insulator 2 is formed making the foaming rate at the part close to the conductors 1 than that at the part close to the outer surface. That is, the hollow foams 4 at the part close to the conductors 1 are made larger than the hollow foams at the part close to the outer surface. In such a composition, not only the mechanical strength is made excellent, but also a high foaming rate can be maintained.

10. 发明专利

JPS63274013A COAXIAL CORE 失效
公开(公告)号：JPS63274013A
公开(公告)日：1988-11-11
申请号：JP10624787
申请日：1987-05-01
申请人： FURUKAWA ELECTRIC CO LTD
发明人： SAKAMOTO KAZUHIDE , YAMAMOTO SHOJI
IPC分类号： H01B11/18
摘要： PURPOSE:To make it possible to carry out a fused cutting, a solder bath soaking, and a hot blast treatment in a good condition, and to improve the terminal processing adaptability, by composing an insulating layer out of a foamy fluorine resin, and specifying a sheath. CONSTITUTION:A coaxial core 10 is composed of a conductor 12, and an insulating layer 14, a shield layer 16, and a sheath 18 formed on the conductor 12 in order, and the conductor 12 is coated with tin, silver, nickel, or the like to improve the soldering process property. In this case, the diameter and the number of the conductor may be selected as desired. On the other hand, the shield layer 16 may be formed either by winding a shield tape lateral or longitudinal over the insulating layer 14, or by winding plural conductors laterally. The insulating layer 14 consists of a foamy fluorine resin, while the sheath 18 consists of a nonbridged polyvinylchloride of the Shore hardness D, 50 to 75. In such a composition, a fused cutting, a solder bath soaking, and a hot blast treatment of the insulating layer and the sheath in the terminal processing of the coaxial core can be carried out in a good condition, and the terminal precessing adaptability can be improved.

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