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1. 发明专利

JP2002200393A VIBRATION CONTROL DEVICE FOR WASHING MACHINE 失效
公开(公告)号：JP2002200393A
公开(公告)日：2002-07-16
申请号：JP2001001350
申请日：2001-01-09
申请人： HITACHI LTD
发明人： NIWASE YOSHIO , GOMITA HISAMITSU , SHIKAMORI TAMOTSU , MISHIRO MASAO , ISHIKAWA SHUNICHI
IPC分类号： D06F37/24 , F16F13/04
摘要： PROBLEM TO BE SOLVED: To reduce the vibration of an outer frame and the noise caused by it even when the deviation of clothing occurs during a spin-drying process ins a washing machine. SOLUTION: This vibration control device is provided with a support rod supporting a washing/spin-drying tub and an outer tub from above a main body, a slider disposed at the lower end of the support rod and vertically sliding via a vibration control spring, a vibration control tube kept in contact with the outer periphery of the vibration control spring, and a sliding tube kept in contact with the slider on its inner peripheral section and penetrated by the support rod at the center. The aperture area of the slider when the damping ratio of the resonance revolution frequency reaches a critical point and the aperture area of the slider when the damping ratio of the stationary revolution frequency reaches the critical point are determined, and air holes for the intermediate area between them are formed on the slider.

2. 发明专利

JPH10214032A DISPLAY DEVICE FOR INFORMATION PROCESSOR 失效
公开(公告)号：JPH10214032A
公开(公告)日：1998-08-11
申请号：JP1502297
申请日：1997-01-29
申请人： HITACHI LTD
发明人： KOBAYASHI RYOICHI , GOMITA HISAMITSU
IPC分类号： G09F9/00
摘要： PROBLEM TO BE SOLVED: To improve glass cracking by providing a space over the entire periphery of the end parts of upper glass and lower glass, and then completely preventing a concentrated load placed on the edge of the glass and preventing each frame from coming into contact with the end part of the glass. SOLUTION: Glass 15 is laminated glass of upper glass 15a and lower glass 15b, and the end part of the upper glass 15a and an upper frame, and the end part of the lower glass 15b and a mold frame 12 are provided with spaces so that they do not come into contact with each other. Without those spaces, the tips of glass surfaces come into direct contact with the upper frame 17 and mold frame 12 and if an information processor main body case is closed and fallen with its LCD up, the metal surface of the upper frame 17 is hit directly, so that the glass cracks. The spaces, however, prevent the glass from cracking in spite of a shock at the time of the fall. It the case is fallen with the LCD down, a soft member prevents the glass 15 from cracking.

3. 发明专利

JPH08215117A VACUUM CLEANER 失效
公开(公告)号：JPH08215117A
公开(公告)日：1996-08-27
申请号：JP2907495
申请日：1995-02-17
申请人： HITACHI LTD , HITACHI TAGA TECH KK
发明人： AKOJIMA KAZUHIRO , ITO SHOICHI , HOSOKAWA ATSUSHI , KAWAMATA MITSUHISA , KAJI MASAKI , SUNAKAWA MASARO , YAMAMOTO WATARU , OTA GICHU , GOMITA HISAMITSU , TAKAGI MASAYUKI
IPC分类号： A47L9/28 , A47L9/04
摘要： PURPOSE: To continue the optimum control suitable for the floor surface, even in such a case where floor-surface information is not transmitted to a vacuum cleaner body, by transmitting the floor-surface information detected by a floor-surface detecting means at prescribed time intervals, and by controlling an electric blower on the basis of the present floor-surface information signal until the subsequent floor-surface information signal is received. CONSTITUTION: The floor-surface information detected by a suction port 905 is transmitted to a vacuum cleaner body through an infrared emitting diode that has been provided to a control circuit 109, and when it is received by the infrared receiving element of the vacuum cleaner body, the inlet power of an electric blower is controlled by a.c. phase control to attain an air quantity suitable for the floor surface, and the air quantity to be blown to an air turbine 104 is automatically controlled so as to suit the floor surface. When the infrared signal from the suction port 905 is not received by the vacuum cleaner body after a lapse of prescribed time, it is such a time that the floor surface is changed or the floor-surface information is transmitted through the suction port 905 at each prescribed time interval, so that the operation of the electric blower is controlled by the floor-surface information being sent immediately before until a prescribed time is reached.

4. 发明专利

JPH07217592A ELECTRIC MOTOR 失效
公开(公告)号：JPH07217592A
公开(公告)日：1995-08-15
申请号：JP908494
申请日：1994-01-31
申请人： HITACHI LTD , HITACHI TAGA MOTOR KK
发明人： NAKAI TAKAHIRO , TOYOSHIMA HISANORI , KIHARA MANABU , OGAWA FUMIHIRO , JORAKU FUMIO , GOMITA HISAMITSU , MIYASHITA KUNIO
IPC分类号： F04D29/053 , F04D29/04
摘要： PURPOSE:To prevent the occurrence of bending of a rotary shaft owing to varnish processing on the rotor of an electric motor and to reduce the generation of vibration and noise owing to the bending of the rotary shaft when the electric motor is operated. CONSTITUTION:An insulating cylinder with which a rotary shaft 7 is covered and which has one end side making contact with an armature core 11 and a patch 13 fitted in the outer periphery of the insulating cylinder and making contact with the end face of the armature core are arranged on both sides of the end face in an axial direction of the armature core. A gap is provided between the rotary shaft 7 and the inner periphery. Since the gap is provided between the rotary shaft 7 and the inner periphery of the insulating cylinder, even when a deviation occurs to the contraction force of varnish, the contraction force is absorbed by bending of the insulating cylinder into the gap, the generation of the stress of the rotary shaft 7 is reduced, and bending of the rotary shaft 7 is prevented from occurring. Thereby, an electric blower 1 to reduce the generation of vibration and noise without increasing a rotation balance owing to eccentricity of the rotary shaft 7 is provided.

5. 发明专利

JPH06254287A OPERATION AND CONTROL METHOD OF DRUM TYPE WASHING MACHINE 失效
公开(公告)号：JPH06254287A
公开(公告)日：1994-09-13
申请号：JP4891093
申请日：1993-03-10
申请人： HITACHI LTD
发明人： MATSUO KAZUYOSHI , KOGORI JUNJI , TAWARA KAZUO , YASUJIMA TOSHIYUKI , GOMITA HISAMITSU
IPC分类号： D06F33/02
摘要： PURPOSE:To reduce washing noise and improve the washing power by a method wherein in a bio-washing mode (soak washing mode), an inverter motor for stream agitation is repeatedly controlled in such a way that after the rotating speed of the inverter motor is gradually increased up to a specified steady-state rotating speed, the steady-state rotating speed is maintained and the inverter motor is reversed after once stopped. CONSTITUTION:A microcomputer 15 of an inverter controller 2 receives control signals from a microcomputer 6 through a receiver 14 and sends control signals to a power switching part 19 through a pre-driver 20 to control an inverter motor 22. In bio-washing mode, after the rotating speed of the motor 22 is gradually increased up to a specified steady-state rotating speed and the steady- state rotating speed is maintained for a specified time period, and then the same operation is performed with the rotation direction reversed. The steady- state rotation speed is 10-20rpm as converted to the rotating speed of an agitator. Thereby, washing noise in bio-washing made can be reduced.

6. 发明专利

JPH06115077A PRINT DISTORTION CORRECTING DEVICE OF INK JET PRINTER 失效
公开(公告)号：JPH06115077A
公开(公告)日：1994-04-26
申请号：JP26995892
申请日：1992-10-08
申请人： HITACHI LTD
发明人： HIRAYAMA MASAHIRO , IGARI MITSUO , GOMITA HISAMITSU , OMORI HIDEYUKI , HARADA NOBUHIRO
IPC分类号： B41J2/075 , B41J2/08 , B41J2/485
摘要： PURPOSE:To ensure that print can be minutely corrected using a minimum amount of data by setting a correction factor for thinned-out data, then interpolating an already set correction factor near thinned-out data yet to be set and sorting out the correction factor as that which enhances resolution and that which does not. CONSTITUTION:If thinned-out data stored in RAM 3 corresponds to thinned out data subjected to a correction factor in ROM 2 when creating a stepped wave based on a setting, CPU 1 compares sequentially a correction factor for thinned-out data to determine whether the correction factor corresponds to the part (2), through a bus 6 from ROM 2. If the correction factor corresponds to the part (2), the correction factor of 8 bits is replaced by one of 16 bits. On the other hand, if the factor does not, the factor of 8 bits is used as it is to calculate a stepped wave using each calculating formula. In addition, if the thinned-out data in RAM 3 do not correspond to that subjected to a correction factor in ROM 2, both correction factors near the thinned-out data in RAM 3 are interpolated in CPU 1 through the bus 6 from ROM 2 so that the thinned-out data corresponding to thinned-out data in RAM 3.

7. 发明专利

JPH05233095A 失效
公开(公告)号：JPH05233095A
公开(公告)日：1993-09-10
申请号：JP3312492
申请日：1992-02-20
申请人： HITACHI LTD
发明人： KOBAYASHI RYOICHI , KIGOSHI HIDECHIKA , SUZAKI MASABUMI , GOMITA HISAMITSU , OGASAWARA NAOKI
IPC分类号： G06F1/16 , G06F3/02 , G06F15/02
摘要： PURPOSE:To fold the information processor by providing a hinge mechanism by separating a keyboard part. CONSTITUTION:A hinge mechanism 8 is provided at the lower part of a keyboard for freely folding a keyboard part 5 so as to incline it at 5-10 deg.. The spring force of the hinge part 7 is set by both of a leaf spring and frictional force so as to hold stable spring force. Therefore, by inclining the keyboard of the note type information processor, characters can be easily inputted in the case of editing a document, the structure is quite effective for preventing erroneous inputs or fatigue in the case of using the processor for a long time, and the inclination of the keyboard 5 at a certain degree is best for human engineering as well.

8. 发明专利

JPH0550598A INK JET RECORDER 失效
公开(公告)号：JPH0550598A
公开(公告)日：1993-03-02
申请号：JP20915591
申请日：1991-08-21
申请人： HITACHI LTD
发明人： HIRAYAMA MASAHIRO , IGARI MITSUO , GOMITA HISAMITSU
IPC分类号： B41J2/045 , B41J2/055 , B41J2/075
摘要： PURPOSE:To obtain an ink jet recorder capable of transmitting an amplitude of a vibrating body to an ink jet port with good efficiency and forming an ideal ink particle. CONSTITUTION:By fixing a vibrating body 2 to an end face of a case 27 on the side opposite to a nozzle 19, a stretching vibration of the vibrating body 2 is transmitted to an ink jet port of the nozzle 18 with good efficiency. Thus, an ideal ink particle can be produced only by applying a small energy to the vibrating body 2. Therefore, the production of an ideal ink particle has the effect of improving a printing quality.

9. 发明专利

JPH04339655A INK JET RECORDING APPARATUS 失效
公开(公告)号：JPH04339655A
公开(公告)日：1992-11-26
申请号：JP11284491
申请日：1991-05-17
申请人： HITACHI LTD
发明人： HIRAYAMA MASAHIRO , IGARI MITSUO , GOMITA HISAMITSU , HAGITANI TOSHIAKI
IPC分类号： B41J2/02
摘要： PURPOSE:To form suitable ink particles, in an ink jet recording apparatus, by especially arranging the flows of ink before and behind an ink chamber. CONSTITUTION:By fixing a vibrator 2 to the end surface of a case 27 on the side 19 opposite to an ink chamber, the expansible vibration of the vibrator 2 is efficiently transmitted to the ink jet orifice of a nozzle 18 and small energy is applied to the vibrator 2 to form suitable ink particles. By this constitution, suitable ink particles are formed and printing quality is enhanced.

10. 发明专利

JPH01208814A METHOD OF DRIVING AC SOLENOID 失效
公开(公告)号：JPH01208814A
公开(公告)日：1989-08-22
申请号：JP3269688
申请日：1988-02-17
申请人： HITACHI LTD
发明人： ISHINO TAKASHI , YAMAMOTO HIROYUKI , HIYAMA ISAO , GOMITA HISAMITSU , NAGANO YOSUKE , NAKANO SHIGEHARU , OSUGI HIROSHI
IPC分类号： H01F7/18
摘要： PURPOSE:To relax the collision of a moving core, and to reduce collision noises remarkably by phase-controlling the timing to energize a coil, aiming at bringing to 0 of a current waveform when the attraction and movement of the moving core are completed. CONSTITUTION:When voltage is applied to a main coil 2 for an AC solenoid 1, the magnetic path of a stator core 3, a yoke 7, a stiffening plate 8 and a moving core 4 is formed, and the core 4 is attracted to the core 3, resisting the reaction force of a return spring 9 and frictional force. Collision noises generated at that time are represented by the product of the weight and attraction acceleration of the core 4, and acceleration is minimized when electromagnetic force takes 0 immediately before a collision. Accordingly, phase control the timing to energize the coil 2 according to the magnitude of reaction and frictional force after the time of the zero-crossing of AC power supply is conducted so that a current waveform is brought to zero at that time, thus relaxing the collision of the core 4, then reducing collision noises.

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