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91. 发明专利

JPH0847209A SMALL GENERATOR 失效
公开(公告)号：JPH0847209A
公开(公告)日：1996-02-16
申请号：JP19627094
申请日：1994-07-29
申请人： SANKYO SEIKI SEISAKUSHO KK , HITACHI LTD
发明人： YUMITA YUKINOBU , HOSOKAWA ATSUSHI , SUNAKAWA MASARO , OTA GICHU
IPC分类号： H02K7/18 , H02K21/14
摘要： PURPOSE:To generate electric power from a small generator by attaching an additional member to a shaft from a rotating shaft of an impeller to a driving member thereby providing an energy source for sensors or fine controls. CONSTITUTION:A two-pole or multi-pole magnet 27 is attached to an outer periphery of a rotating shaft 21 near an intermediate portion of two bearings 22 and 23 supporting a rotating shaft 21 erected between a drive side fixed to a rotating shaft of an impeller and a load side comprising a belt coupled to a rotating brush. An inner york 25 with S and N poles of a magnet located oppositely is formed in one united body with a bearing holder 24 retaining two bearings 22 and 23 and, at the same time with the forming, a bobbin portion for winding a wire material is formed. Also, an outer yoke 26 is formed outside the inner yoke 25 and power generating portion 28. The outer yoke 26 is formed as one united body thereby functioning also as a case.

92. 发明专利

JPH07213468A CONTROL CIRCUIT FOR VACUUM CLEANER 失效
公开(公告)号：JPH07213468A
公开(公告)日：1995-08-15
申请号：JP908694
申请日：1994-01-31
申请人： HITACHI LTD
发明人： KAWAMATA MITSUHISA , HOSOKAWA ATSUSHI , AKOJIMA KAZUHIRO , HAKOYAMA AKIYOSHI , KAJI MASAKI
IPC分类号： A47L9/28
摘要： PURPOSE:To provide economical and effective operation by regulating an ignition phase angle to keep a signal level of a current detection means constant for controlling an input to a motor-driven blower to be kept constant. CONSTITUTION:When a vacuum cleaner is operated, a phase angle for ignition of a TRIAC 35 is determined based on a signal from a hand operation part 15 for controlling an input to a motor-driven blower 2. A reference value (a current command value) is determined to control a signal level of a current detection means 31 to be kept constant based on a signal from the hand operation part 15. Next, the motor-driven blower 2 is controlled in such a way that the signal level of the current detection means 31 is kept constant by a phase control means 33 based on the determined current command value. Quantity of dust in a dust collecting chamber 11 is thus increased, for example, to decrease load on the motor-driven blower 2, and when the current value is lowered, the output signal level of the current detection means 31 is lowered, in which case the phase firing angle is increased to return the current value of the motor-driven blower 2 to the previous level.

93. 发明专利

JPH07148099A VACUUM CLEANER 失效
公开(公告)号：JPH07148099A
公开(公告)日：1995-06-13
申请号：JP29778093
申请日：1993-11-29
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 provide a remote control type vacuum cleaner in which degree of designing freedom and degree of planing freedom are extended more than in the past, and the dimension of a cleaner body can be made more compact than a conventional cleaner of this type. CONSTITUTION:In a vacuum cleaner in which the signal transmission between a hose hand pare and a cleaner body is carried out by remote control method of a radio method, a remote control receiving element 1 is mounted on a sub- printed board 2 divided from a main printed board 3 having a cleaner body control circuit mounted thereon, and the sub-printed board 2 having the remote control receiving element 1 mounted thereon is further mounted on the main printed board 3 in the state where the remote control receiving element 1 is opposed to the remote control receiving window 4 of a cleaner body case 7.

94. 发明专利

JPH07318A VACUUM CLEANER 失效
公开(公告)号：JPH07318A
公开(公告)日：1995-01-06
申请号：JP14497793
申请日：1993-06-16
申请人： HITACHI LTD
发明人： TAKAGI MASAYUKI , HOSOKAWA ATSUSHI , SUNAKAWA MASARO , KAWAMATA MITSUHISA
IPC分类号： A47L5/30 , A47L9/00 , G01N21/47
摘要： PURPOSE:To provide a light remote control type vacuum cleaner having no communication line and little trouble by transmitting the floor surface state to a central controller via optical communication. CONSTITUTION:The transmitted light 41 emitted from the second luminescence body 35 of a bent tube 3 passes through a light passage 44 formed integrally with an extension tube 2 and is reflected by a reflector 43 located at a suction port 1. The reflected light 42 passes through the light passage 44 and is returned to the second light receiving body 36. The floor surface state of the floor surface 53 is linked with the angle of the reflector 43 by the vertical movement of a roller 51 and replaced with the change of the ratio of the light intensity between the transmitted light 41 and the reflected light 42. The floor surface state is judged from the change of the ratio, and a vacuum cleaner is controlled.

95. 发明专利

JPH0690883A VACUUM CLEANER 失效
公开(公告)号：JPH0690883A
公开(公告)日：1994-04-05
申请号：JP24317692
申请日：1992-09-11
申请人： HITACHI LTD
发明人： HOSOKAWA ATSUSHI , SUGA HISANAKA
IPC分类号： A47L9/28
摘要： PURPOSE:To enable the controlling of power consumption as target at a specified point by detecting current of a vacuum blower to compute a power consumption, which is compared with a target value preset to minimize a difference. CONSTITUTION:A microcomputer 15 transmits an operation command signal to a D2 terminal from a hose hand SW circuit and a trigger signal to a G terminal of a bidirectional semiconductor element 5 through a trigger circuit 12 from an OUT terminal. As a result, main electrodes T1 and T2 are electrified to rotate an electric blower 4. A voltage to be applied to the electric blower 4 changes depending on a timing of outputting the trigger signal and hence, the current varies to allow the changing of power consumption. A quantity Q of air and moreover, the power consumption of a cleaner is determined by computation in the microcomputer 15. The power consumption at the maximum point Q=Qp of a sucking power P is almost the same as the power consumption at a quantity of released air Q=Q1 without control and can coincide with a target value. Power is lowered to perform an operation with Q>Q2 when a suction port is lifted in the air.

96. 发明专利

JPH0661621A RECYCLING METHOD OF BOARD 失效
公开(公告)号：JPH0661621A
公开(公告)日：1994-03-04
申请号：JP21125292
申请日：1992-08-07
申请人： HITACHI LTD
发明人： ABE YUKIO , HOSOKAWA ATSUSHI
IPC分类号： H05K1/02 , H05K1/11 , H05K3/00 , H05K3/22 , H05K3/36
摘要： PURPOSE:To recycle board set and to reduce the number of board set to be discarded by splitting the circuit part into a plurality of functional sections and providing an interface to be connected with a connector. CONSTITUTION:A split board set is constituted of a split board set 3 for mounting components in function block 1, and a split board set 4 for mounting components in function block 2. The split board set is provided with an interface to be connected with a connector 5 in addition to a pattern for connecting the interface between the functionally split board sets 3, 4. Consequently, when the board is employed in a vacuum cleaner, for example, and returned from a market because of defective pattern, the board set is subjected to defect analysis and a new split board set is connected through the connector in place of the defective split board thus regenerating the desired function.

97. 发明专利

JPH04144527A VACUUM CLEANER 失效
公开(公告)号：JPH04144527A
公开(公告)日：1992-05-19
申请号：JP26623790
申请日：1990-10-05
申请人： HITACHI LTD
发明人： SUGA HISANAKA , JORAKU FUMIO , ISHII YOSHITARO , TOYOSHIMA HISANORI , KAWAMATA MITSUHISA , ABE TAKASHI , HOSOKAWA ATSUSHI , ITO SHOICHI , OHARAGI HARUO , TAWARA KAZUO , ENDO TSUNEHIRO , MIYASHITA KUNIO , YASUJIMA TOSHIYUKI
IPC分类号： A47L9/28
摘要： PURPOSE:To realize a more accurate behavior control operation in accordance with the operation of a suction port and the cleaning surface by judging whether a suction port is operated or not with a pressure sensor in a cleaner main body, and also, judging whether a power brush is present or not by detecting the current of a power brush motor. CONSTITUTION:When the vacuum cleaner is in an operating state, pressure in the vacuum cleaner main body detected by a pressure sensor circuit 8 is monitored, and in the case a pressure fluctuation in a prescribed sampling time exceeds a certain value, it is discriminated that a user is operating a suction port, and the cleaner starts an automatic control operation. In this case, by the current detection sensor of a rotary brush driving motor, whether the suction port is what is called a power brush incorporating a rotary brush, or other suction port is connected can be discriminated, and in each case, the control processing can be classified into an optimal automatic control operation. Also, when the suction is in a static state, or is floating in the air, the cleaner is set to a holding operation state by reducing the suction force of the cleaner, and decreasing the speed of revolution of the rotary brush of the suction port.

98. 发明专利

JPH03297432A VACUUM CLEANER 失效
公开(公告)号：JPH03297432A
公开(公告)日：1991-12-27
申请号：JP10032090
申请日：1990-04-18
申请人： HITACHI LTD
发明人： OHARAGI HARUO , TAWARA KAZUO , YASUJIMA TOSHIYUKI , ABE TAKASHI , ENDO TSUNEHIRO , MIYASHITA KUNIO , JORAKU FUMIO , TOYOSHIMA HISANORI , KAWAMATA MITSUHISA , ISHII YOSHITARO , SUGA HISAO , HOSOKAWA ATSUSHI
IPC分类号： A47L9/28 , A47L9/04 , A47L9/18 , A47L9/19
摘要： PURPOSE:To automatically obtain the optimum suction force according to the surface to be cleaned by detecting the fluctuation amplitude of a peak value of an electric current flowing through a nozzle motor, and automatically adjusting the input of a fan motor according to the detection. CONSTITUTION:The FM is a brushless motor as a fan motor and comprises a rotor R and armature windings U, V, W, wherein flowing load current ID is detected as a voltage drop of a resistor R1. A speed control circuit for the fan motor FM comprises a magnetic pole position detecting circuit 18 for detecting the magnetic pole position of the rotor R by a Hall element 17 or the like, an amplifier 23 for amplifying the detection value of load current ID, a base driver 15 for driving transistors TR1-TR6 and a microcomputer 19 for driving the base driver 15 according to a detection signal 18 obtained from the circuit 18. Electric power is supplied to a nozzle motor 26 for driving a rotary brush by phase controlling a power supply 29 by a triode AC switch 26. The reference numeral 27 is a current detector for load current IN flowing through the nozzle motor 26, and 28 is an amplifier of an output signal of the current detector 27.

99. 发明专利

JPH03295527A VACUUM CLEANER 失效
公开(公告)号：JPH03295527A
公开(公告)日：1991-12-26
申请号：JP9766690
申请日：1990-04-16
申请人： HITACHI LTD
发明人： OHARAGI HARUO , TAWARA KAZUO , YASUJIMA TOSHIYUKI , ABE TAKASHI , ENDO TSUNEHIRO , MIYASHITA KUNIO , ISHII YOSHITARO , JORAKU FUMIO , SUGA HISANAKA , HOSOKAWA ATSUSHI , TOYOSHIMA HISANORI , KAWAMATA MITSUHISA
IPC分类号： A47L9/28 , A47L9/19
摘要： PURPOSE:To automatically obtain an optimal suction port corresponding to a use inlet and the floor surface by constituting the vacuum cleaner so that the kind of the inlet is estimated from the air quantity, an average value of an output value of a pressure sensor, and a current of a nozzle motor, and an input of a fan motor and a nozzle motor is controlled in accordance with a result of estimation of the kind of the floor surface and the kind of the inlet. CONSTITUTION:The kind of the floor surface is estimated by using one of fluctuation width of a peak value of a nozzle motor 26 and fluctuation width of an output value of a pressure sensor 8. Subsequently, the quantity of air flowing in from an inlet is estimated by using a rotating speed of a fan motor FM and a load current. The kind of the inlet is estimated from this air quantity, the output value of the pressure sensor 8, and a current of the nozzle motor 25 for driving a rotary brush. Thereafter, in accordance with a result of estimation of the kind of the floor surface and the kind of the inlet, an input of the fan motor FM and the nozzle motor 26 is controlled. In such a way, the vacuum cleaner can be controlled by optimal suction force against the floor surface.

100. 发明专利

JPH03176020A VACUUM CLEANER 失效
公开(公告)号：JPH03176020A
公开(公告)日：1991-07-31
申请号：JP31526489
申请日：1989-12-06
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 lower a suction force when cleaning is not performed, and save wasteful energy by setting a means for detecting the changing factors of static pressure, load current, and the like in the operation state of a vacuum cleaner, and by identifying that the cleaning is not performed or a suction port is sucked to a surface to be cleaned, if the detecting quantity of said factors is not fluctuated for a specified time, to lower the suction force. CONSTITUTION:A detected value detected from a pressure sensor 10 having a detecting section in a main body flow course is fed to a control circuit 9, as signal. In the control circuit, it is identified that cleaning is not performed actually, if the detected value is not fluctuated for a previously determined time, and a device is controlled to lower the rotational frequency of a motor fan 2. Besides, when the signal of static pressure fluctuating during a specified time in the operational state of the lowered rotational frequency of the motor fan 2 comes, by the control circuit 9, it is identified that the cleaning is started, and the device is controlled to reset the rotational frequency of the motor fan 2 into a normal state. If the device is controlled in this manner, when a cleaner is not operated, a suction force is lowered, and wasteful energy can be saved, and noise when the cleaning is not performed is effectively attenuated.

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