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51. 发明专利

JP2001167673A POWER SWITCHING APPARATUS 失效
公开(公告)号：JP2001167673A
公开(公告)日：2001-06-22
申请号：JP35322299
申请日：1999-12-13
申请人： MITSUBISHI ELECTRIC CORP
发明人： ITOTANI TAKAYUKI , MARUYAMA TOSHIMASA , SATO TOSHIBUMI , MIYAMOTO SEIICHI , KOBAYASHI MINORU
IPC分类号： H01H33/66 , H01H31/00 , H01H33/24
摘要： PROBLEM TO BE SOLVED: To prevent a mechanical damage and an electric discharge due to an electric field concentration in the junction part of a vacuum vessel. SOLUTION: It covers the surrounding of the contact portion of an insulation cylinder with a vacuum vessel part of metal product with a conductive rubber cushion ring and also covers the outside surface of the vacuum vessel from its outside with a resin insulating layer.

52. 发明专利

JP2001136616A SWITCHGEAR 失效
公开(公告)号：JP2001136616A
公开(公告)日：2001-05-18
申请号：JP31412299
申请日：1999-11-04
申请人： MITSUBISHI ELECTRIC CORP
发明人： ITOTANI TAKAYUKI , MARUYAMA TOSHIMASA , SATO TOSHIBUMI , KOBAYASHI MINORU , MIYAMOTO SEIICHI
IPC分类号： H02B13/02 , H01H1/54 , H01H31/00 , H01H33/66
摘要： PROBLEM TO BE SOLVED: To obtain a switchgear capable of miniaturization and cost reduction. SOLUTION: This switchgear is equipped with a main circuit switching part 71 which is installed in a vessel and has a moving electrode 27 and a fixed electrode 26, and a ground switching part 172 which is installed in the vessel and has a moving electrode 129 and a fixed electrode 128. The electrodes 27 and 26 close and open a part between a bus side conductor 30 and a load side conductor 32. The electrodes 129 and 128 close and open a part between the load side conductor 32 and a ground side earthed conductor 33, and are smaller than the electrodes 27 and 26.

53. 发明专利

JP2001126595A VACUUM INSULATION SWITCH GEAR 失效
公开(公告)号：JP2001126595A
公开(公告)日：2001-05-11
申请号：JP30373299
申请日：1999-10-26
申请人： MITSUBISHI ELECTRIC CORP
发明人： SATO TOSHIBUMI , MARUYAMA TOSHIMASA , KOBAYASHI MINORU , MIYAMOTO SEIICHI , ITOTANI TAKAYUKI
IPC分类号： H01H33/66 , H01H31/00
摘要： PROBLEM TO BE SOLVED: To provide a small-sized high-performance vacuum insulation switch gear at low production cost. SOLUTION: A vacuum insulation gear comprises a vacuum vessel and a necessary number of switch mounted in the vacuum vessel, is formed of a metal material and is molded by an insulation.

54. 发明专利

JP2000285774A SWITCHGEAR 失效
公开(公告)号：JP2000285774A
公开(公告)日：2000-10-13
申请号：JP9558399
申请日：1999-04-01
申请人： MITSUBISHI ELECTRIC CORP
发明人： MARUYAMA TOSHIMASA , SATO TOSHIBUMI , MIYAMOTO SEIICHI , ITOTANI TAKAYUKI , KOBAYASHI MINORU
IPC分类号： H02B13/02 , H01H31/00 , H01H33/66
摘要： PROBLEM TO BE SOLVED: To provide a switchgear which secures safety and is easy to reduce in size. SOLUTION: This switchgear is made up of a switching mechanism, a vacuum container 10 for housing the switching mechanism, and an insulating mold 60 covering the vacuum container 10. The switching mechanism is equipped with a first fixed contact 21a electrically connected to a bus, a first movable contact 22a making contact with or parting from the first fixed contact 21a, a second fixed contact 31a electrically connected to the first movable contact 22a and electrically connected to a power transmission cable, and a second movable contact 32a making contact with or parting from the second fixed contact 31a and grounded to the outside. A conductive layer 60a is provided for grounding on the surface of the mold 60.

55. 发明专利

JPH1125817A ELECTROMAGNETIC REPULSION MECHANISM FOR SWITCH 失效
公开(公告)号：JPH1125817A
公开(公告)日：1999-01-29
申请号：JP17966597
申请日：1997-07-04
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMAJI YUICHI , MARUYAMA TOSHIMASA
IPC分类号： H01H3/28 , H01H33/28 , H01H33/38 , H01H33/66
摘要： PROBLEM TO BE SOLVED: To obtain larger repulsion with a smaller, lighter repulsive plate without making a power supply larger by composing this electromagnetic repulsion mechanism out of a repulsive coil and a thin repulsive plate fixed on a movable rod opposite to the coil surface and by setting the resonance frequency of a resonant circuit which is composed of an inductance of the coil and the capacitance of a capacitor with in a specific range. SOLUTION: This electromagnetic repulsion mechanism 48 is produced so as to comprise a switch frame 50, a switch movable rod 1A and a repulsive coil 22 fixed on the frame 50, and the repulsive coil 22 is so formed as to have an inductance having a resonance frequency set by the aid of a capacitor in a power supply in the range of 500 Hz or gher to 2000 Hz or lower. A thin repulsive plate 23 made of a thin copper plate is fixed on the movable rod 1A opposite to the coil surface of the repulsive coil 22 and has a thickness ranging from 2 to 6 mm, so as to have the same thickness as the effective depth of eddy current corresponding to frequencies from 500 to 2000 Hz. A reinforcing plate 13 is made of a light non-magnetic material and reinforces the thin repulsive plate 23.

56. 发明专利

JPH06318425A BREAKER WITH OPEN TIME ADTUSTED 失效
公开(公告)号：JPH06318425A
公开(公告)日：1994-11-15
申请号：JP10788893
申请日：1993-05-10
申请人： MITSUBISHI ELECTRIC CORP
发明人： MARUYAMA TOSHIMASA , KOBAYASHI MINORU
IPC分类号： H01H71/28 , H01H71/74 , H01H73/36
摘要： PURPOSE:To adjust the open time of a breaker optionally by connecting a coil having a hollow part in series to the trip coil of the breaker and inserting a core in the hollow part. CONSTITUTION:A switch 1 is closed when any abnormal current caused by an accident such as surge is detected. Voltage of DC power supply 10 is applied to a trip coil 1 and a coil 15 connected in series to each other due to the closure and current is increased according to the time constant of serial connectors of both coils 1 and 15. An operating current value K1 generates magnetic force by which the coil 1 can move a movable core 2 in an arrow 1B direction against energization force of a drawing spring 4D.

57. 发明专利

JPH05325735A MONITORING DEVICE OF SWITCH 失效
公开(公告)号：JPH05325735A
公开(公告)日：1993-12-10
申请号：JP12732092
申请日：1992-05-20
申请人： MITSUBISHI ELECTRIC CORP
发明人： MARUYAMA TOSHIMASA
IPC分类号： G01P15/00 , H01H33/42 , H01H33/59
摘要： PURPOSE:To provide a monitoring device of a switch capable of precise monitoring without requiring positional regulation between the operating position of a mechanism and a detector at opening and closing. CONSTITUTION:In a switch consisting of a fixed contact 2 and a movable contact opened and closed by a driving shaft through a link mechanism, an accelerometer 35 is mounted on the operation rod 14 of the link mechanism, and the operation of the link mechanism is monitored by using the output waveform of the accelerometer 35.

58. 发明专利

JPH04359821A OPERATION LINK SYSTEM OF SWITCHGEAR 失效
公开(公告)号：JPH04359821A
公开(公告)日：1992-12-14
申请号：JP13266491
申请日：1991-06-04
申请人： MITSUBISHI ELECTRIC CORP
发明人： KOYAMA KAZUAKI , MARUYAMA TOSHIMASA
IPC分类号： H01H33/42
摘要： PURPOSE:To make an insulating rod, which causes the size enlargement, unnecessary and make a switchgear compact. CONSTITUTION:A main shaft 2 is installed in the lower part container 1 of a switchgear in the way that it can rotate freely and a driving lever 3, which is attached to and fixed in its extended part is engaged with an operational system 6 through a rod 5. Also, a lever 3 made of an insulating material is fixed in the main shaft 2 through an installation part corresponding to each phase of the switchgear. A long circular hole 8a is then formed in the lower end part of a movable main contactor 10 and the movable main contactor 10 is directly engaged with the tip part of the insulating lever 30. Since the operational system and a main circuit charging part are electrically insulated by the lever fixed in the main shaft, a switchgear which does not need an insulating rod and becomes compact is obtained.

59. 发明专利

JPS62254329A POWER SWITCH 失效
公开(公告)号：JPS62254329A
公开(公告)日：1987-11-06
申请号：JP9721786
申请日：1986-04-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： HASEGAWA YUTAKA , MARUYAMA TOSHIMASA
IPC分类号： H01H33/70

60. 发明专利

JP2002015645A VACUUM-INSULATION SWITCHGEAR AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2002015645A
公开(公告)日：2002-01-18
申请号：JP2000379609
申请日：2000-12-14
申请人： MITSUBISHI ELECTRIC CORP
发明人： MIYAMOTO SEIICHI , MARUYAMA TOSHIMASA , SATO TOSHIBUMI , ITOTANI TAKAYUKI , KOBAYASHI MINORU
IPC分类号： H01H33/66 , H01H31/00 , H01H33/24 , H01H33/666 , H02B13/035
摘要： PROBLEM TO BE SOLVED: To obtain a vacuum-insulation switchgear which can be inexpensively manufactured and in which formation of an electrical conductive layer of superior reliability is possible. SOLUTION: Plural switching parts such as breaker parts or the like are housed in a vacuum vessel 5, and this vacuum vessel 5 is molded by an insulator 7, and a surface of this insulator 7 is made to have an electro-conductivity by a flame spray coating film 8.

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