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1. 发明专利

JP2005327951A Capacitor with protective function 审中-公开
标题翻译：具有保护功能的电容器
公开(公告)号：JP2005327951A
公开(公告)日：2005-11-24
申请号：JP2004145797
申请日：2004-05-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OMORI TETSUO
IPC分类号： H01G2/14 , H01H37/76
CPC分类号： H01H37/767
摘要： PROBLEM TO BE SOLVED: To prevent damages from expanding due to smoking and ignition of an electrical component itself at increase of internal loss in the component, and to prevent device troubles caused by continuous use of a capacitor where failures have occurred.
SOLUTION: The capacitor is provided with a switch which is electrically connected parallel to the capacitor and is formed by holding a thermoplastic piece between pins constituted of two opposed metals with spring properties. The thermoplastic piece melts due to the heat generation of the capacitor and brings the pin into contact with the switch part, thus short-circuiting it electrically. Consequently, the overcurrent protective function of a power supply is activated, and heat generation of the capacitor is reduced.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了防止由于部件内部损耗的增加而导致的电气部件本身的吸烟和点燃造成的损坏，并且防止由于连续使用发生故障的电容器引起的装置故障。解决方案：电容器设置有与电容器并联电连接的开关，并且通过将热塑性片保持在由具有弹簧性质的两个相对的金属构成的销之间而形成。热塑性片由于电容器的发热而熔化并使引脚与开关部分接触，从而使其电气短路。因此，电源的过电流保护功能被激活，并且电容器的发热减少。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JPH07194109A POWER SUPPLY CIRCUIT 失效
公开(公告)号：JPH07194109A
公开(公告)日：1995-07-28
申请号：JP33750593
申请日：1993-12-28
申请人： HITACHI LTD , HITACHI COMPUTER ELECTRONIC
发明人： NISHIHARA TAKAHIRO , OMORI TETSUO , FUJIE TOSHIAKI , MIZUKAMI TOSHIHIKO , SAGA KOJI
IPC分类号： G06F1/26 , H02M3/28
摘要： PURPOSE:To provide a power supply circuit in which a gate driving voltage and the gate input capacitance of a MOS-FET are varied in accordance with the load factor of a DC power supply and a conversion efficiency with a low load factor is improved and which facilitates the energy savings in a stand-by period and a long time continuous use. CONSTITUTION:A pulse width modulation power supply circuit employs one MOS-FET which functions as a switching device. Further, the power supply circuit has a radio frequency converter 101, a rectifying smoothing circuit 102, a rectifier 103, a first output stabilizing controller 104, a second output stabilizing controller 105 and an output current limiter 106 and, in addition, a voltage halving circuit 107 which halves a voltage in accordance with the output signal of the output current limiter 106. In the output current limiter 106, if a current applied to the drain terminal of the MOS-FET 6 is below a certain value, the voltage halving circuit 107 is operated to decline the driving voltage of the MOS-FET 6 to the half of the basic voltage.

3. 发明专利

JPH0792215A AC ELECTRONIC LOAD EQUIPMENT 失效
公开(公告)号：JPH0792215A
公开(公告)日：1995-04-07
申请号：JP23935793
申请日：1993-09-27
申请人： HITACHI LTD , YAMABISHI ELECTRIC
发明人： OZAKI FUMITAKA , OMORI TETSUO , KANOU YOSHIHISA
IPC分类号： G01R31/00 , H02J9/00 , H02M7/12 , H02M7/219
摘要： PURPOSE:To surely execute an evaluation test by making a current of the same waveform as an actual current waveform flow through UPS(uninterruptive power supply unit) to be tested, regarding an AC electronic load equipment which is used for a tester of a power supply such as the UPS which outputs alternating current. CONSTITUTION:A current waveform stored in a storage circuit 27 is compared and amplified by error amplifying circuits 21 and 22 and given to transistors 6 and 7 of an output stage. On the occasion, a synchronizing circuit for synchronization with an input power supply is constructed with a transformer 12, comparators 17 and 18, etc. Since execution of a test is made possible by the same waveform as an actual load current has, accordingly, even a waveform having a complicated form can be prepared and tested easily and testing and evaluation of a power supply unit to be tested are made possible. Therefore, execution of complete evaluation is made possible and sharp reduction of troubles (faults) relating to waveforms in a field is made possible.

4. 发明专利

JPS62221872A POWER SOURCE DEVICE 失效
公开(公告)号：JPS62221872A
公开(公告)日：1987-09-29
申请号：JP6411886
申请日：1986-03-24
申请人： HITACHI LTD , HITACHI COMPUTER ELECTRONIC
发明人： SAKAMOTO YUKIHIRO , OMORI TETSUO
IPC分类号： H02M3/28
摘要： PURPOSE:To improve reliability and reduce a cost, by making a main power source only have an output voltage control circuit, and by working a dependent power source with the same pulse as switching pulse for working the main power source. CONSTITUTION:A power source device is provided with a main power source 100 and a dependent power source 200, and the main power source 100 is provided with a control circuit for stabilizing output voltage, and the dependent power source 200 works according to control signal fed from the main power source 100. The dependent power source 200 is driven by directing the same pulse as switching pulse for working the main power source 100, to a V-PM converting circuit 33 for input, via a driver 19 and a photo-coupler 34, and a circuit constant is set so that the output voltage may be approx. 1.1 time as high as that of the main power source 100. So far as the share of output current on arranging both the power sources 100, 200 in parallel with each other is concerned, the current on the dependent power source 200 side is set to be higher before it comes to rated output current, and when it comes to rated or more output current, then the output current is increased by 10% or less of the current of the main power source 100. On over current, the over current interruption circuits 15-18 of the main power source 100 are worked.

5. 发明专利

JP2000014133A DC POWER SUPPLY DEVICE 失效
公开(公告)号：JP2000014133A
公开(公告)日：2000-01-14
申请号：JP17248098
申请日：1998-06-19
申请人： HITACHI LTD
发明人： OZAKI FUMITAKA , OMORI TETSUO , MIYAUCHI MASASHI
IPC分类号： G06F1/28 , G05F1/10 , H02J1/00 , H02M3/28
摘要： PROBLEM TO BE SOLVED: To permit the use of a widely usable power source, and to reduce cost by additionally providing a mechanism for setting an operating current value of the overcurrent protecting circuit of a power unit again, using the actual value of a load current used as a reference. SOLUTION: An output voltage f of a current detector circuit 7 is inputted to a current detecting protecting circuit 8 and a current value storage circuit 15. This current value storage circuit 15 monitors the current value of the current detector circuit for a preset fixed time, and stores a maximum current value at this time, if a trigger signal k for a set command is generated. To keep the maximum value of this current until the next trigger direction arrives, a means of utilizing a back-up by the use of a battery only for this circuit, using nonvolatile memories, etc., for example are utilized. It is possible to set a overcurrent protecting value corresponding to a load current, by using this stored voltage value as a reference voltage 1 for the overcurrent protecting circuit 8. It is possible to make the output voltage of a reference voltage generating circuit a voltage proportional to a detected current through the operation of a reference voltage generating circuit 14.

6. 发明专利

JPH11168876A DC/DC CONVERSION CIRCUIT 失效
公开(公告)号：JPH11168876A
公开(公告)日：1999-06-22
申请号：JP33266797
申请日：1997-12-03
申请人： HITACHI LTD
发明人： SHIGEMARU TAKESHI , OMORI TETSUO
IPC分类号： H02M3/155
摘要： PROBLEM TO BE SOLVED: To make thin a DC reactor and to miniaturize a conversion circuit, by providing a switching element from an anode side of a diode being inserted in forward direction between the DC reactor and an output voltage terminal and turning on/off the switching element in synchronization with a main switching element. SOLUTION: A MOS-FET 20 that is provided along a diode 19 that is connected to a DC reactor 3 and an output terminal 6 and a MOS-FET 21 that is connected to an output terminal 18 are both connected in forward direction. When a main switch element 2 continues and a first DC output voltage V1 is controlled constantly by a stabilization control circuit B, the terminal voltage of the FET 21 is proportional to that of an FET 20 and resistance can be ignored, thus also making constant a second DC output voltage V2. When the FET 20 continues, the second output voltage V2 is separated from a first output voltage, and the first DC output voltage V1 cannot be affected by the output voltage, thus constantly maintaining the first output voltage V1 by operating the control circuit B and also the second output voltage V2.

7. 发明专利

JPH07304591A CRANE CAR 失效
公开(公告)号：JPH07304591A
公开(公告)日：1995-11-21
申请号：JP9949094
申请日：1994-05-13
申请人： HITACHI LTD , HIGASHI NIPPON RYOKAKU TETSUDO , NIPPON TETSUDO SHARYO KOGYOKAI
发明人： MAKINO KAZUHISA , YOSHIMOTO TSUTOMU , OMORI TETSUO
IPC分类号： B66C23/04 , B66C23/36 , B66C23/50
摘要： PURPOSE:To overhang a boom in both longitudinal directions Without changing the direction of the whole crane car in a crane car to perform work in both longitudinal directions. CONSTITUTION:Turning bodies 25a and 25b capable of supporting a boom 30 having a suspending tool 51 are arranged on the front and rear ends of a car body 22. Cargo handling work is performed by projecting the boom 30 from one turning body 25a and by projecting the turning body 25a. When the cargo handling work is performed on the other turning body 25b side, the turning body 25a is turned so that the suspending tool 51 side of the boom 30 turns to the turning body 25b and the boom 30 is next projected to the turning body 25b side and the boom 30 is projected from the turning body 25b. The boom 30 is moved by driving a rack 41 of the boom 30 by pinions of the turning bodies. Travel is performed in a condition of supporting the boom 30 with the two turning bodies 25a and 25b.

8. 发明专利

JPH05227754A POWER SUPPLY 失效
公开(公告)号：JPH05227754A
公开(公告)日：1993-09-03
申请号：JP2783092
申请日：1992-02-14
申请人： HITACHI LTD
发明人： OMORI TETSUO , MAEDA HIROKAZU , KONO NAOFUMI
IPC分类号： G05F1/10 , H02M7/21
摘要： PURPOSE:To realize substantial increase of power interruption sustaining time by detecting input voltage drop and performing back up with an auxiliary voltage taken out from main output side thereby varying the power interruption sustaining time depending on load power. CONSTITUTION:In the power supply, an AC power supply 1 is rectified through a rectifying circuit 2 and filtered through a capacitor 3 to produce a DC voltage. Upon interruption of AC input voltage under low load current, a rectified voltage and a voltage multiplied through a transformer drop uniformly with a reduction coefficient corresponding to the load current. The voltages drop slowly because of the low load current, but the capacitor voltage drops constantly because current consumption of an auxiliary power supply circuit is scarcely influenced by the magnitude of the load current. When energy is fed to the auxiliary voltage by connecting a diode, auxiliary voltage drop can be positioned at a value equal to the output voltage minus forward voltage drop of diode and a control circuit is prevented from entering into nonoperative state resulting in prolongment of power interruption sustaining time.

9. 发明专利

JP2006214498A Screwing structure and screwing method 审中-公开
标题翻译：螺旋结构和螺旋方法
公开(公告)号：JP2006214498A
公开(公告)日：2006-08-17
申请号：JP2005027152
申请日：2005-02-03
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIYAUCHI MASASHI , OMORI TETSUO
IPC分类号： F16B5/08 , F16B17/00 , F16B35/00
摘要： PROBLEM TO BE SOLVED: To facilitate material recycle of screwed plastic mold components.
SOLUTION: This screwing structure of the plastic mold components is provided with a mold boss part having a spiral female thread groove, a hollow part of which central part is filled with resin, and a rivet which has a body part deformed along the female thread groove to form a male thread groove at the time of resin filling. The components are fastened by the mold boss part and the rivet.
COPYRIGHT: (C)2006,JPO&NCIPI

10. 发明专利

JPH07309587A DRIVING DEVICE FOR BOOM OF CRANE CAR 失效
公开(公告)号：JPH07309587A
公开(公告)日：1995-11-28
申请号：JP9949294
申请日：1994-05-13
申请人： HITACHI LTD , HIGASHI NIPPON RYOKAKU TETSUDO , NIPPON TETSUDO SHARYO KOGYOKAI
发明人： TSURUOKA MASAHIRO , MAKINO KAZUHISA , YOSHIMOTO TSUTOMU , OMORI TETSUO
IPC分类号： B66C23/04 , B66C23/36 , B66C23/50
摘要： PURPOSE:To obtain a demountable power connector and permit the correct connection and disconnection, when a crane car as a railway rolling stock for construction has its boom movable. CONSTITUTION:The connection position of a striker 36 on the side surface of a boom 5 is detected by a detector 16a, and the connection or disconnection of a pipe mounting/demounting device 17 is carried out by a mounting/ demounting driving device 28, and the connection by a pin is carried out, and the slip-off trouble can be prevented.

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