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1. 发明专利

JPH1042616A MOTOR-DRIVEN CARRYING CART FOR FARM FIELD 失效
公开(公告)号：JPH1042616A
公开(公告)日：1998-02-17
申请号：JP20219996
申请日：1996-07-31
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD , NISHIZAWA KK
发明人： ISHIZAKI KAZUHISA , TAKAO HIROMI , NINOMIYA TAKAYUKI , UJIIE TAKUJI , NISHIZAWA AKIRA
IPC分类号： A01B51/02 , B62B3/00
摘要： PROBLEM TO BE SOLVED: To provide a motor-driven carrying cart for the use in a farm field, having decreased running resistance and enabling efficient transportation by optimizing the width between wheels. SOLUTION: This motor-driven carrying cart is provided with a carrying bed for holding harvested crops, wheels for supporting the carrying bed 1 in movable state, a motor generating rotary power and a power-transmission mechanism transmitting the power from the motor to the rear wheels 3b. The wheels are composed of rear wheels 3b receiving the rotary force from the motor to drive the carrying bed 1 and idling front wheels 3a. These wheels 3a, 3b are rotatably supported by U-shaped supporting leg parts 5. The width (l) of each wheel 3a, 3b is set to satisfy the formula 0.02×L

2. 发明专利

JPH11137979A REGENERATING DEVICE FOR ANTIFREEZE 失效
公开(公告)号：JPH11137979A
公开(公告)日：1999-05-25
申请号：JP30865897
申请日：1997-11-11
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： NINOMIYA TAKAYUKI , ITO TOSHIKATSU , ISHIZAKI KAZUHISA
IPC分类号： B01D61/12 , B01D65/02 , B01J47/02 , B01J47/14
摘要： PROBLEM TO BE SOLVED: To provide a regenerating device for antifreeze capable of performing cleaning action for a reverse osmotic membrane by automatically judging the lowering of the function of the reverse osmotic membrane during the antifreeze regenerating operation. SOLUTION: A 1st rout for performing the regeneration of the antifreeze, a 2nd rout for cleaning the reverse osmotic membrane with water and a 3rd rout for cleaning with a chemical are provided and when it is discriminated by a signal from an electrical conductivity meter provided in an ion exchange resin 6 that the ion exchange resin reaches the life during the regeneration working, it is judged that the function of the osmotic membrane 5 is lowered and the cleaning rout is automatically switched to the 2nd and the 3rd rout. Since the reverse osmotic membrane 5 is automatically cleaned when the function of the reverse osmotic membrane 5 is lowered in the regeneration working of the antifreeze, the lowering of the function of the reverse osmotic membrane 5 is accurately judged, the switching work to the cleaning rout by manual is made needless and the efficiency of the regeneration of the antifreeze is improved.

3. 发明专利

JPH10215549A MOTOR 失效
公开(公告)号：JPH10215549A
公开(公告)日：1998-08-11
申请号：JP1501897
申请日：1997-01-29
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： UJIIE TAKUJI , ITO TOSHIKATSU , NINOMIYA TAKAYUKI , ISHIZAKI KAZUHISA
IPC分类号： H02K13/00
摘要： PROBLEM TO BE SOLVED: To assemble a motor through stacking of components in one direction by supporting a cup member at the inner circumferential surface thereof, while covering a bearing and supporting the outer circumferential surface thereof while fitting to the inner side face of a bracket. SOLUTION: A magnetic circuit is provided on the inner circumference of a tubular yoke 4, a field coil 2 is formed around the main pole thereof and an armature 6 is arranged on the inner circumference of the field coil 2. A brush 3 for supplying a current to the armature 6 is held by a brush holder 11, comprising a flanged cup member which is applied to a bearing 13 to be supported on the inner circumferential surface thereof with the outer circumferential surface thereof which is fitted to the inner side face of a bracket 10 and supported in place. Since a motor can be assembled by stacking the components from one direction, workability can be enhanced.

4. 发明专利

JPH09202236A SMALL ELECTRIC TRUCK 失效
公开(公告)号：JPH09202236A
公开(公告)日：1997-08-05
申请号：JP1360796
申请日：1996-01-30
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： ISHIZAKI KAZUHISA , ITO TOSHIKATSU , NINOMIYA TAKAYUKI , UJIIE TAKUJI
IPC分类号： B60B33/00 , B62B3/00 , B62B5/00
摘要： PROBLEM TO BE SOLVED: To obtain a constant braking force irrespective of the abrasion of a wheel or other external force. SOLUTION: The small electric truck is composed of a drive wheel 4 of the truck, a fixed wheel 5 supporting the truck, free wheels 6 changing the direction, a stopper 7 set when stopping, a cylinder separating the wheel from road surface, a pedal expanding and contracting the cylinder, an assist arm connected to the tip part of the pedal, and a mount attached to the cylinder, and a constant braking force can be obtained irrespective of the abrasion of the wheel or other external force by disengaging the grounding power between the wheel and the road surface of the stopper by the elevation of the cylinder in the stopper 7 disposed in the driving wheel side or in the front or back of the truck 1.

5. 发明专利

JPH09273456A OIL SUPPLYING ELECTRIC PUMP DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH09273456A
公开(公告)日：1997-10-21
申请号：JP8355896
申请日：1996-04-05
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： ARAI ZENJI , NINOMIYA TAKAYUKI , KANEKO SUSUMU
IPC分类号： F02M37/08 , F04B49/06
摘要： PROBLEM TO BE SOLVED: To carry out an automatic stop operation when a fuel tank is filled fully without restricting a fuel flow rate by using a liquid level sensor inside the fuel tank in an internal combustion engine and to reduce the number of parts so as to accomplish reduction in a size and in a cost SOLUTION: In oil supply, a motor in an electric pump main body 6 is rotated, and by means of an action of an impeller, fuel is fed from an external supply side tank 7 to a fuel tank 5 via a pumping pipe 8 and a discharge pipe 9, and a liquid level position in the fuel tank 5 is raised, so that an output voltage value from a liquid level sensor 4 is reduced. The output voltage value is fed to a fuel meter 3, so that a painter of the fuel meter 3 is moved to the F side, and at the same time, the output voltage value is fed into a controller 10. When the output voltage value from the liquid level sensor 4 reaches the specified value, according to this, the controller 10 stops excitation to the motor in the pump main body, so that the rotation of the motor is stopped and oil supply is stopped.

6. 发明专利

JPH0956015A ELECTRIC TRUCK 失效
公开(公告)号：JPH0956015A
公开(公告)日：1997-02-25
申请号：JP20563995
申请日：1995-08-11
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： ITO TOSHIKATSU , NINOMIYA TAKAYUKI , ISHIZAKI KAZUHISA , UJIIE TAKUJI
IPC分类号： B62B3/00 , B60L15/20
摘要： PROBLEM TO BE SOLVED: To obtain an electric truck in which the operability is enhanced using a single drive motor. SOLUTION: Under the loading space 10 of an electric truck, two front wheels 50, 52 are secured fixedly to the front side of loading space in the advancing direction and two rear wheels 54, 56 are secured swingingly to the rear side of loading space in the advancing direction. One front wheel 50 is fixed with a DC motor 62 through a gear box 64 and a handle 20 is fixed to the rear off loading space. A battery case containing a battery 34 and a controller 200 is suspended from the handle 20. The controller 200 is provided with a soft start circuit for preventing abrupt increase of the speed when a power switch 40 is turned on.

7. 发明专利

JPH11165688A ROTARY WINDOW FOR SHIP 失效
公开(公告)号：JPH11165688A
公开(公告)日：1999-06-22
申请号：JP33010097
申请日：1997-12-01
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： ITO TOSHIKATSU , NINOMIYA TAKAYUKI , ISHIZAKI KAZUHISA
IPC分类号： E05F15/10 , B63B19/02
摘要： PROBLEM TO BE SOLVED: To safely improve visibility by arranging a DC motor on the outer peripheral side of a window support body, and providing a driving force transmitting mechanism to transmit driving force of the DC motor to a rotary window. SOLUTION: A driving DC motor 80 is installed on a transmission mechanism installing member 70b. An installing position of the DC motor 80 is not a central part of window glass 22, but is the outer peripheral side of the window glass 22, and is also the lower side. A small pulley 90 is fixed to a rotary shaft of the DC motor 80. Therefore, torque of the DC motor 80 is transmitted to a rotary shaft 40 through the small pulley 90, a belt 94 and a large pulley 92. The window glass 22 is fixed to the rotary shaft 40 by a connecting bolt 42 and a connecting nut 50, and when the DC motor 80 rotates, a rotary window 20 rotates.

8. 发明专利

JPH1037861A AUTOMATIC STOP TYPE ELECTRIC PUMP 失效
公开(公告)号：JPH1037861A
公开(公告)日：1998-02-13
申请号：JP19177696
申请日：1996-07-22
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： NINOMIYA TAKAYUKI , ITO TOSHIKATSU
IPC分类号： F04B49/00
摘要： PROBLEM TO BE SOLVED: To dispense with a job for monitoring an oil level of a fuel tank during the oil supply as well as to make improvements maintainability by controlling this electric piston pump on the basis of an input signal out of a level sensor mounted on a vehicle, while automatically stopping the oil supply in time of its completion and at a time when a supply side tank has emptied. SOLUTION: When a main switch 14 and a driving switch 11 are turned on, and 5V is fed to a feed level detection circuit 20, an oil feeding quantity is detected by a level sensor 4, and the output signal is taken into a voltage amplifier circuit 19. At this time, the feed level detection circuit 20 detects the oil feeding quantity on the basis of this amplifier signal, and when it is so judged that the oil feeding quantity is less than 100%, the 5V is outputted to a transistor 21, turning a relay 22 to ON, and this electric piston pump 6 is operated. In succession, when it is so judged that the oil feeding quantity is exactly 100%, zero V is outputted, and the relay 22 is turned off, so this pump 6 is stopped. Moreover, at a time when this pump 6 stops its oil feeding, a vacuum switch 13 is turned off, and a power source of a control unit 10 is also cut off.

9. 发明专利

JPH09238404A ELECTRIC TRAVELING UNIT OF PUSH TRUCK 失效
公开(公告)号：JPH09238404A
公开(公告)日：1997-09-09
申请号：JP4445396
申请日：1996-03-01
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： UJIIE TAKUJI , ITO TOSHIKATSU , NINOMIYA TAKAYUKI , ISHIZAKI KAZUHISA
IPC分类号： B60L11/18
摘要： PROBLEM TO BE SOLVED: To realize a push truck traveling in the electric-driven mode by connecting a drive unit to a battery box in which a controller and a battery are stored, and fitting the drive unit and the battery box to a loading platform of the push truck by a fitting piece provided on a battery unit. SOLUTION: In an electric-driven truck provided with a battery box 3 comprising a drive unit which comprises drive wheels 5-3, a motor 5-1, and a reduction gear 5-2, a controller 4 to control the number of revolution of the motor 5-1, and a battery 7 to drive the motor 5-1, the drive unit 5 is integratedly connected to the battery box 3, and a U-shaped piece 6 to hold a loading platform 9 of the truck from upper and lower parts is provided on the battery box 3. The drive unit 5 and the battery box 3 are fitted to the loading platform 9 of the push truck by the U-shaped piece 6. The push truck can be electrically traveled.

10. 发明专利

JPH0970103A CONTROLLER FOR MOTOR-DRIVEN CARRIER 失效
公开(公告)号：JPH0970103A
公开(公告)日：1997-03-11
申请号：JP22141295
申请日：1995-08-30
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： NINOMIYA TAKAYUKI , ITO TOSHIKATSU , ISHIZAKI KAZUHISA , UJIIE TAKUJI
IPC分类号： B60L11/18 , B60L3/00
摘要： PROBLEM TO BE SOLVED: To start a motor-driven carrier even when the capacity of the main battery which supplies power for driving the motor for driving the carrier drops by switching the power source to an auxiliary battery. SOLUTION: A power source circuit 16 and main control circuit 17 are operated by turning on an operation switch 2 and a voltage signal is outputted to the control circuit 17 by changing a speed setting volume 1. When a motor is started, the X section of the control circuit 17 detects the terminal voltage of a main battery 4 and, when the detected voltage reaches the voltage corresponding to that which is reached when the 50% of the rated capacity of the battery 4 is discharged, switches the contact of a relay 15 from a contact 15a for the battery 4 to a contact 15b for a standby battery 4a. In order to indicate the operating states of the batteries 4 and 4a, LEDs 20 and 21 are respectively connected to the contacts 15a and 15b so that the operating states of the batteries 4 and 4a can be monitored. In such a way, the power source to the motor 4 is switched to the standby battery 4a before the main battery 4 runs down when the capacity of the battery 4 drops.

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