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41. 发明专利

JP2000339383A ELECTRONIC SEAL IMPRESSION SYSTEM AND RECORDING MEDIUM RECORDING ELECTRONIC SEAL IMPRESSION PROCESSING PROGRAM 失效
公开(公告)号：JP2000339383A
公开(公告)日：2000-12-08
申请号：JP14832999
申请日：1999-05-27
申请人： HITACHI ELECTRIC SYSTEMS LTD
发明人： SATO NORIMASA , MORI SHUNJI , YAMAMOTO AKIRA , KOIWA YUTAKA
IPC分类号： G06F19/00 , G06Q10/10
摘要： PROBLEM TO BE SOLVED: To prevent alternation of electronic document data after sealing the electronic seal impression by setting seal data to a display state when electronic seal impression data are copied in the sealing area of an electronic document, setting confirmation and collation data to a non-display state and disabling a processing for editing data of the electronic document. SOLUTION: A CPU 10 starts an electronic seal program to realize an electronic seal function, generates electronic seal data in accordance with an input from an input part 30 by an electronic seal data generating function and executes a processing for registering it. Electronic seal data are generated by division into seal data and confirmation and collation data for confirming the truth of a sealed seal. When the electronic document is sealed, electronic seal data held in a memory part 50 are read and copied into a seal place, seal data are set to the display state and confirmation and collation data are set to the non-display state. When the truth of the seal is confirmed, confirmation and collation data copied in the non-display state are made to be in the display state to confirm the truth of the seal.

42. 发明专利

JP2000152428A POWER DISTRIBUTION PANEL AND TERMINAL BOARD THEREFOR 失效
公开(公告)号：JP2000152428A
公开(公告)日：2000-05-30
申请号：JP31325398
申请日：1998-11-04
申请人： HITACHI ELECTRIC SYSTEMS
发明人： SATO NORIMASA , MORI SHUNJI , MIZOGUCHI TSUTOMU , KITAGAWA MIKIO
IPC分类号： H02B1/20
摘要： PROBLEM TO BE SOLVED: To improve assembling characteristic and reliability by providing, at the bottom part of a supporting board, a fitting member to fit control devices of a power distribution panel and an engaging means to be engaged with the common fitting means. SOLUTION: A fitting rail 51 is a fitting member for fitting a terminal board 1 within a power distribution panel. The fitting rail 51 is provided with a fitting hole for fitting to a cabinet of the power distribution panel. The fitting rail 51 engaged with an engaging means 35 provided at the bottom part of a supporting board 31 holds the supporting base 31 and receives a force generated in the loading/unloading direction, when a connecting terminal is loaded and unloaded to control flexure deformation when the supporting board 31 is loaded to the terminal. In other words, when the fitting rail 51 is engaged with the engaging part 35 of the supporting board 31, it becomes a fitting member for fitting the terminal board 1 to the power distribution panel and also is used as a reinforcing member for reinforcement to the force in the loading/unloading direction. Accordingly, the terminal board is not easily deformed when it is loaded or unloaded to or from the connecting terminal, making easier the unloading work and assuring electrical connection through reliable connecting operation.

43. 发明专利

JPH11234819A OPERATION PANEL 失效
公开(公告)号：JPH11234819A
公开(公告)日：1999-08-27
申请号：JP3725598
申请日：1998-02-19
申请人： HITACHI ELECTRIC SYSTEMS
发明人： SATO NORIMASA , MORI SHUNJI
IPC分类号： H02B3/00
摘要： PROBLEM TO BE SOLVED: To obtain an operation panel which makes maintenance and inspection work easier by forming independently operating circuit for each device inside the panel. SOLUTION: An operation panel 80 consists of an operating place selector switch 74 an operation switch 75 and a pilot lamp 76 each having connecting terminals #1 to #4, a terminal block 2 having wiring terminals 25, the number of which is identical with the 12 connecting terminals in total or more, 12 terminal connecting wires (7D), which are connected one to one between the connecting terminals and wiring terminals, and four cross-over wires (7C), which connect the wiring terminals 25 of the terminal block 2 connected one to one with the terminal connecting wires (7D) to each other. Operating circuits which connect the terminal block 2 to each device inside the panel is formed independently of the devices inside the panel. Therefore, it is possible to independently repair each device inside the panel.

44. 发明专利

JPH10267966A CURRENT CONVERTER AND DETECTOR FOR STATE OF CONTACT 失效
公开(公告)号：JPH10267966A
公开(公告)日：1998-10-09
申请号：JP7563097
申请日：1997-03-27
申请人： HITACHI ELECTRIC SYSTEMS
发明人： HAGA HIROSHI , MORI SHUNJI , MOMOCHI YASUSHI , ONO MINORU
IPC分类号： G01R15/20 , H01F38/28
摘要： PROBLEM TO BE SOLVED: To provide a current converter whose sensitivity is high by a method wherein a plurality of electric circuits and a plurality of contact circuits are arranged so as to be adjacent. SOLUTION: In order to obtain an electric signal corresponding to a magnetic flux which is passed through a conductor 13 as an electric circuit generating a magnetomotive force and which is generated in the gap G1 of a core 10 forming a magnetic path, a detector is provided with a resistance loop body 21 as a magnetoresistance circuit means which covers the outer circumference of the core 10 and which is passed through the conductor 13 and with an outside core 22 as an outside magnetic circuit means which covers the outer circumference of the resistance loop 21, which is passed through the conductor 13 and which forms a magnetic path on the outer circumference at the outside of the core 10. Thereby, a current, to be measured, of several tens of mA can be detected even under a detecting environment condition under which a current in an adjacent electric circuit is at several hundred A.

45. 发明专利

JPH10188744A COMPOSITE OPERATING DEVICE FOR SWITCH 失效
公开(公告)号：JPH10188744A
公开(公告)日：1998-07-21
申请号：JP34572496
申请日：1996-12-25
申请人： HITACHI LTD , HITACHI ELECTRIC SYSTEMS
发明人： TAKAMOTO MANABU , MUNAKATA NORIAKI
IPC分类号： H01H3/42 , H01H33/42 , H01H33/52
摘要： PROBLEM TO BE SOLVED: To provide a composite operating device for switches, which has an interlocking function whereby a plurality of switches can be operated by one operation source. SOLUTION: A composite operating device for switches includes a disc 5, which has a roller 51 projected from its upper surface and which is rotated by rotating force imparted, operating shafts 31, 41 provided near the outer periphery of the disc 5 and freely rotationally held to transmit operating forces to an operating mechanism opening and closing power switches, and operating levers 3, 4 connected to the respective operating shafts 31, 41 and rotated by the pressure of the roller 51 as the disc 5 rotates. In this case, the plurality of operating levers 3, 4 for connection to the operating shafts 31, 41 are provided to open and close the plurality of power switches 1, 2.

46. 发明专利

JPH10176297A PLATING METHOD AND PLATING DEVICE 失效
公开(公告)号：JPH10176297A
公开(公告)日：1998-06-30
申请号：JP33801896
申请日：1996-12-18
申请人： HITACHI ELECTRIC SYSTEMS
发明人： SAKAI MINORU , HENMI TAKAO
IPC分类号： C25D5/02 , H01B13/00
摘要： PROBLEM TO BE SOLVED: To provide a plating device with which the generation of waste in plating work is minimized. SOLUTION: The plating device 1 is constituted of a holding part 30 for holding a body 10 which is to be plated and has holes of dimension (d), and an upper side plating liq. supply part 20 and a lower side plating liq. supply part 40 for possessing a pair of plating liq. sealing bodies having holes of dimensions D and D' and sandwitching the holding part 30 by facing respective holes each other. The plating liq. is passed through respective holes, thereby plating the peripheries of the holes (d) of the body 10 to be plated.

47. 发明专利

JPH1028306A EARTH SWITCH 失效
公开(公告)号：JPH1028306A
公开(公告)日：1998-01-27
申请号：JP18051596
申请日：1996-07-10
申请人： HITACHI ELECTRIC SYSTEMS , KOKUBU KIKI ENG KK
发明人： ISHIDA SHINNOSUKE , SASAKI KATSUTAKA
IPC分类号： H02B1/16 , H01H33/56
摘要： PROBLEM TO BE SOLVED: To provide a highly reliable earth switch which can be easily attached afterward. SOLUTION: An earth switch 23 grounds or insulates a bus 21 composed of a cylindrical conductor by bringing into contact or separating a traveling contact 24 with or from the bus 21, by moving the contact 24 forward and backward with respect to the axis C of the bus 21, and the contact 24 is provided with floating contacts 43 which are separately arranged on the left and right sides of the axis C of the bus 21, in the direction perpendicular to the axial direction of the bus 21, composed of retaining plates 41, mobile plates 42, springs 44, etc., and come into contact with the surface of the bus 21 at two spots, while the contacts 43 are floated in such a state that the contacts 43 can slide to at least one side of the circumferential or axial direction of the bus 21.

48. 发明专利

JPH09184861A METHOD AND APPARATUS FOR DETECTING CHANGING AMOUNT 失效
公开(公告)号：JPH09184861A
公开(公告)日：1997-07-15
申请号：JP34306495
申请日：1995-12-28
申请人： HITACHI LTD , HITACHI ELECTRIC SYSTEMS , HITACHI NAKA ELECTRON KK
发明人： MIYAMOTO AKIRA , MORI SHUNJI , YAMAZAWA YUJI , ONO KOJI , ITO TAKANORI
IPC分类号： G01R19/12
摘要： PROBLEM TO BE SOLVED: To hold a changing amount for a sampling period which is obtained by sampling measuring values related to a measuring object. SOLUTION: Signals to be measured are sequentially sampled by a sample hold circuit 10 for every sampling cycle and sampling values are stored. The deviation of the stored sampling value from a signal to be measured and input afterwards is integrated at an integrator 14. Immediately before an integration value of the integrator 14 is reset, the integration value of the integrator 14 is stored in a sample hold circuit, 18, and held during a next sampling cycle. The integration value is divided by a dividing circuit 20. A changing amount of the measuring value in the sampling cycle is detected by the dividing circuit 20.

49. 发明专利

JPH08237829A ELECTRIC CIRCUIT SWITCHGEAR 失效
公开(公告)号：JPH08237829A
公开(公告)日：1996-09-13
申请号：JP3647895
申请日：1995-02-24
申请人： HITACHI LTD , HITACHI ELECTRIC SYSTEMS
发明人： ISHIDA SHINNOSUKE , OZAKA AKIRA
IPC分类号： H02B13/075
摘要： PURPOSE: To provide an electric circuit switchgear which can be arc-extinguished surely by a method wherein the opening speed immediately after the contact parting operation of a moving contact in the contact parting operation is made maximum by a compression spring attached to a moving contact interlocked with an electric motor and a compressed insulating gas is blown simultaneously to the contact. CONSTITUTION: In an electric motor 1, a shaft 4 is turned via a gear inside a gear box 2, and a turning motion is converted into a linear motion by a ball screw 5. A moving contact 10 is moved up and down so as to be closed and opened. A collector 11 which is slid with the moving contact 10 is fixed to a ground-side external terminal 12. An insulating tube 13 is provided, on one side, with a moving contact 14 which insulates a generator-side contact 18 from the ground-side contact 12 and which is interlocked with the moving contact 10, with a fixed-side arc contact 15, with a support stand 16 comprising a wiper spring 20 and with a fixed main contact 17. When the contacts 14, 15, 17 are opened, their opening speed immediately after their contact parting operation is made maximum, and an insulating gas is spouted simultaneously. Thereby, an electric circuit switchgear can be arc-extinguished surely.

50. 发明专利

JPH07218557A SIGNAL DETECTION CIRCUIT OF DIGITAL CONTROL DEVICE 失效
公开(公告)号：JPH07218557A
公开(公告)日：1995-08-18
申请号：JP30618194
申请日：1994-12-09
申请人： HITACHI LTD , HITACHI PROCESS COMPUTER ENG , HITACHI ELECTRIC SYSTEMS
发明人： KOIZUMI MINORU , MANJO MINORU , WAKUKAWA TAKESHI
IPC分类号： G01R15/18 , G01R19/00 , H02H3/02 , H02P9/14
摘要： PURPOSE:To make correction of the frequency and phase lag of analog filters which are furnished to absorb surge and remove DC component from signals detected from the AC momentary value signal. CONSTITUTION:AC momentary value signals given by a transformer (PT) 10 for instrument and a current transformer (CT) 9 for instrument are processed by analog filters 21, 22, and then the frequency for performing correction by a frequency (f) detecting means 103 is detected, and upon detecting of the effective values 102, 112, a frequency correction of the detected signal gain is performed by frequency (f) correcting means 104, 114, and the corrected signal is supplied to an automatic digital voltage adjuster 120. This enables removal of DC component and absorption of surges, correcting in compliance with change in the input signal, and detecting of stable signals.

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