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51. 发明专利

JP2523930B2 失效
公开(公告)号：JP2523930B2
公开(公告)日：1996-08-14
申请号：JP9766690
申请日：1990-04-16
申请人： HITACHI LTD
发明人： OHARAGI HARUO , TAWARA KAZUO , YASUJIMA TOSHUKI , ABE TAKASHI , ENDO TSUNEHIRO , MYASHITA KUNIO , ISHII YOSHITARO , JORAKU FUMIO , SUGA HISANAKA , HOSOKAWA ATSUSHI , TOYOSHIMA HISANORI , KAWAMATA MITSUHISA
IPC分类号： A47L9/28 , A47L9/19

52. 发明专利

JPH07255654A VACUUM CLEANER 失效
公开(公告)号：JPH07255654A
公开(公告)日：1995-10-09
申请号：JP4844894
申请日：1994-03-18
申请人： HITACHI LTD
发明人： OTA GICHU , KOGORI JUNJI , HAKOYAMA AKIYOSHI , HOSOKAWA ATSUSHI
IPC分类号： A47L9/28
摘要： PURPOSE:To provide an inexpensive controller for a vacuum cleaner that produces reference information for controlling an electric fan by applying acoustoelectric transducer for use in transmitting information signals. CONSTITUTION:An electret condenser microphone 10 having high sensitivity and wide frequency response characteristics as an acoustoelectric transducer is mounted on a control board 9. An opening 1a is formed over the top of the microphone 10, on the body case 1 to enclose the board 9. Further, a handy operation part 4 comprises a remote control board 12 on which an operation button 11 interlocking to the switch transmitting command signals of standard, weak, strong, and stop is mounted, and a battery 13. And, an ultrasonic element 14, an transducer, is attached at the grip end of a hose 3. The electric signals transmitted from the element 14 are discriminated by a processor mounted on the control board 9, and decoded into control information signals.

53. 发明专利

JPH07116095A AIR TURBINE NOZZLE UNIT FOR VACUUM CLEANER 失效
公开(公告)号：JPH07116095A
公开(公告)日：1995-05-09
申请号：JP26630393
申请日：1993-10-25
申请人： HITACHI LTD
发明人： AKOJIMA KAZUHIRO , HOSOKAWA ATSUSHI , HAKOYAMA AKIYOSHI , SUNAKAWA MASARO , TAKAGI MASAYUKI
IPC分类号： A47L9/28 , A47L9/00 , A47L9/04
摘要： PURPOSE:To prevent noise and abrasion of a rotary system caused by overspeed rotation of an air-turbine in an air-turbine nozzle unit for a vacuum cleaner. CONSTITUTION:The load current running through the rotary unit 6 coupled to the shaft 7 of an air turbine 5 is controlled so as to apply a braking torque to the air-turbine 5 in order to prevent the air turbine from overspeeding. Since the braking torque is changed under electric control, a desired effect can be obtained for a long time.

54. 发明专利

JPH06105780A VACUUM CLEANER 失效
公开(公告)号：JPH06105780A
公开(公告)日：1994-04-19
申请号：JP25613092
申请日：1992-09-25
申请人： HITACHI LTD , HITACHI TAGA TECH KK
发明人： HOSOKAWA ATSUSHI , KAJI MASAKI , YAESAWA MASAHIRO
IPC分类号： A47L9/28 , G09F9/00
摘要： PURPOSE:To reduce the space and suppress the cost by setting a motor-driven blower in a plurality of power consuming conditions, and allowing a single display element in a display circuit to make display with different hues according to the power consuming condition at the time. CONSTITUTION:The power consumption, the amount of dust in a vacuum cleaner, etc., are judged, and a microcomputer 10 controls the power consumed by a motor-driven, blower 8. A display circuit 21 has a multi-color light emitting element 22 which varies the hue and is controlled by drive circuits 23, 24 in conformity to signals given by the microcomputer 10. When a fuzzy switch of operating switches in a hose at-hand part is pushed, a hose at-hand circuit 17 transmits a signal to the microcomputer 10, and the drive circuit 23 sends current only to the c-a electrodes in between of display element 22, and a light emitting element gives a green indication. When an 'intense' switch is pushed, current flows only to the c-b electrodes in between of the display element 22 to generate a red indication solely and when a static switch is pushed, current flows to both c-a and c-b to generate green and red indications resulting in appearing as orange.

55. 发明专利

JPH06105777A VACUUM CLEANER 失效
公开(公告)号：JPH06105777A
公开(公告)日：1994-04-19
申请号：JP25612992
申请日：1992-09-25
申请人： HITACHI LTD , HITACHI TAGA TECH KK
发明人： HOSOKAWA ATSUSHI , KAJI MASAKI
IPC分类号： A47L9/28
摘要： PURPOSE:To use a battery as a power supply for a hose at-hand control circuit and inform the user of the battery replacement timing. CONSTITUTION:A hose at-hand control circuit to issue an operation command signal is installed in a hose at-hand operation part, and a battery 1 is used as a power supply for it. A display means is provided to display the operating condition by turning an operation command switch 3 in the hose at-hand control circuit. When exhausted, the battery 1 as power supply for the hose at-hand control circuit drops its voltage, but because the display element 9 goes out of light emission before the operating limit voltage of an integrated circuit 2 is reached, the user can know the battery replacement timing in advance.

56. 发明专利

JPH03267036A ELECTRIC CLEANER 失效
公开(公告)号：JPH03267036A
公开(公告)日：1991-11-27
申请号：JP6663290
申请日：1990-03-16
申请人： HITACHI LTD
发明人： SUGA HISANAKA , JORAKU FUMIO , ISHII YOSHITARO , TOYOSHIMA HISANORI , KAWAMATA MITSUHISA , OHARAGI HARUO , TAWARA KAZUO , ENDO TSUNEHIRO , MIYASHITA KUNIO , YASUJIMA TOSHIYUKI , ABE TAKASHI , HOSOKAWA ATSUSHI
IPC分类号： A47L9/28
摘要： PURPOSE:To increase a suction capacity by automatically judging respective cleaning surfaces and automatically detecting an optimum operational characteristic to respective cleaning faces from the operational characteristic previously preset and by carrying out an automatic control operation basing on the result. CONSTITUTION:An electric cleaner is provided with an electric fan, a sensor 6 detecting the variation of the operational conditions of the cleaner, and a controller 4 regulating the electric fan in response to the detected value of the sensor 6. A plurality of kinds of suction characteristics of the cleaner expressed by the degree of vacuum and the air volume are provided in the main control circuit 4 and they are automatically selected and changed over in accordance with the varied volume of this movement, basing on the variation of the operational condition of the cleaner according to the loading variation on reciprocally moving on cleaning surface of the cleaner suction inlet. That is, fine and elaborate controls can be done, based on the suction capacities according to the respective applied cleaning face and hence, the suction capacity can be increased.

57. 发明专利

JPH03178625A VACUUM CLEANER 失效
公开(公告)号：JPH03178625A
公开(公告)日：1991-08-02
申请号：JP31751089
申请日：1989-12-08
申请人： HITACHI LTD
发明人： KAWAMATA MITSUHISA , JORAKU FUMIO , SUGA HISANAKA , ISHII YOSHITARO , TOYOSHIMA HISANORI , OHARAGI HARUO , TAWARA KAZUO , ENDO TSUNEHIRO , MIYASHITA KUNIO , YASUJIMA TOSHIYUKI , ABE TAKASHI , HOSOKAWA ATSUSHI
IPC分类号： A47L9/28
摘要： PURPOSE:To save useless energy and to decrease noise by providing a means for detecting static pressure and a load current in an operating state, and deciding that cleaning is not executed or a suction port is sucked to the surface to be cleaned unless the detection quantity is fluctuated for a prescribed time, and lowering the suction force. CONSTITUTION:A detection value H detected from a pressure sensor 10 having a detecting part in a body passage is transmitted as a signal to a control circuit 9, and the control circuit 9 decides that cleaning is not executed at pressure or a suction port is sucked to the surface to be cleaned unless its detection value H is fluctuated in a prescribed period, and lowers the speed of revolution of a motor-driven air blower 2. In this case, simultaneously, the control circuit 9 decides that the suction port 8 is in a sucked state and a non-cleaning state, when the detection value H from the pressure sensor 10 is larger than or almost the same as an average value H0 of the detection value at the time of cleaning executed immediately before, and reduces the suction force by lowering remarkably the speed of revolution. When H>=0 or an absolute value ¦ H¦ of H is smaller than a prescribed value (a), power is lowered remarkably, comparing with the time of a state of A, and in addition to an effect of energy saving and a noise reduction, overheating of the motor-driven air blower 2 caused by suction of the suction port is prevented.

58. 发明专利

JPS63214218A ELECTRIC CLEANER 失效
公开(公告)号：JPS63214218A
公开(公告)日：1988-09-06
申请号：JP4754487
申请日：1987-03-04
申请人： HITACHI LTD
发明人： HOSOKAWA ATSUSHI , TOBISE OSAMU , TAKAGI MASAYUKI , SAGAWA KOICHI
IPC分类号： A47L9/28

59. 发明专利

JPS61218395A CONTROL CIRCUIT FOR AC POWER 失效
公开(公告)号：JPS61218395A
公开(公告)日：1986-09-27
申请号：JP5692685
申请日：1985-03-20
申请人： HITACHI LTD
发明人： HOSOKAWA ATSUSHI , JORAKU FUMIO
IPC分类号： A47L9/28 , H02P25/04 , H02P27/02
摘要： PURPOSE:To suppress the difference of power consumption of AC power sources of different frequencies as small as possible by reducing a power source voltage by a transformer and applying it to a controller. CONSTITUTION:A transformer 5 is inserted between an AC power source 1 and a rectifier 13. In other words, the transformer 15 reduces the voltage (100V) of the power source 1 to a voltage (e.g., 20-40V) of the degree which does not obstruct the operation of a trigger element 6, and outputs it to the rectifier 13. The low voltage is rectified by the rectifier 13, and applied to charger/ discharger 7, 8 for applying the voltage synchronized with the frequency of a power source to the element 6. As a result, since the difference of the power consumption by the frequency difference of 50 and 60Hz is reduced by the same circuit, when the circuit is associated in an electric device, it can be manufactured commonly in both 50/60Hz districts with the same circuit.

60. 发明专利

JP2001353396A ELECTRIC WASHING MACHINE 失效
公开(公告)号：JP2001353396A
公开(公告)日：2001-12-25
申请号：JP2000178576
申请日：2000-06-14
申请人： HITACHI LTD
发明人： OMOZAWA TAKESHI , HANAWA NOBUYUKI , OGURA TAKESHI , HATTORI NAOKI , SOMA TSUNEHIRO , HOSOKAWA ATSUSHI , ITO SHOICHI
IPC分类号： D06F33/02 , D06F37/00 , H02M7/06 , H02M7/537 , H02P6/06 , H02P6/08 , H02P6/17 , H02P21/04 , H02P23/03 , H02P27/06 , H02P27/08 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To provide an economic realization of an electric washing machine using a brushless motor. SOLUTION: A DC voltage generation circuit 34 for generating DC voltage in an inverter circuit 35 of a controller 27 is a rectifier circuit which selectively works as a voltage doubler rectifier circuit or full-wave rectifier circuit depending on the continuity or non-continuity of a semiconductor AC switching element.

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