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1. 发明专利

JPH02228232A OIL-COOLED AC GENERATOR 失效
公开(公告)号：JPH02228232A
公开(公告)日：1990-09-11
申请号：JP4804089
申请日：1989-02-28
申请人： HONDA MOTOR CO LTD , HITACHI LTD
发明人： KANO KOJI , TABATA HAJIME , OKAMURA MASAKI , KIKUCHI MASAO , KANAMARU NAONOBU
IPC分类号： H02K5/173 , H02K5/20 , H02K7/00 , H02K9/19 , H02K19/24
摘要： PURPOSE:Simply to form a means to control the supply quantity of cooling oil on the way of a supply passage of cooling oil by spraying the cooling oil into inside a generator for cooling and by dividing the load to a rotating shaft into two with the said rotating shaft independently fixed on both sides of a rotor core. CONSTITUTION:When a generator rotates, cooling oil is introduced from a cooling oil source to an axial hole 5A0 of a rotor core 5 through a through hole 7A0. Then the cooling oil is further scattered outwards from the rotor core 5 in operation through a diametrical hole 10A going through the inside circumference of a field coil 8 and between the tip of the field coil 8 and undercut poles 4. From between the undercut poles 4a and 4b the cooling oil is sprayed to a generating coil 2 fixed to a stator 3. At this moment, a throttle 7c controls the supply of cooling oil into the generator not to be more than required, so that it prevents the cooling oil from coming short to the other spots where the oil is to be supplied from the above cooling oil source.

2. 发明专利

JPH0556602A AC GENERATOR WITH VACUUM PUMP 失效
公开(公告)号：JPH0556602A
公开(公告)日：1993-03-05
申请号：JP23077491
申请日：1991-08-19
申请人： HITACHI LTD
发明人： OKAMURA MASAKI , HORIOKA KAZUO , SASAKI SUSUMU
IPC分类号： H02K5/24 , H02K7/14
摘要： PURPOSE:To prevent resonance vibration by setting predetermined relations among the mass of rotor, Young's modulus of rotor shaft, mean shaft diameter, length from the center of rotor to the center of bearings at both sides, the number of vanes of vacuum pump and the maximum rotating speed of rotor. CONSTITUTION:Mass of a rotor 1 of a motor connected to a vacuum pump (not shown) at the serration 1b of a rotor shaft 1a is m [kgf.S /mm], Young's modulus of the rotor shaft 1a is E [kgf/mm ], mean shaft diameter is (a) [mm], lengths from the center of the rotor 1 to the centers of bearings 7 and 8 at both sides are L1 and L2 [mm], number of vanes of the vacuum pump is (n), and the maximum rotating speed of the rotor 1 is N [rpm]. And specifications are so determined that the relations of the equation will become valid. By doing this, the resonance vibration of the AC generator with the vacuum pump comprising eccentric vanes will be prevented, and always stable output current can be supplied.

3. 发明专利

JPH03195348A ALTERNATOR FOR VEHICLE 失效
公开(公告)号：JPH03195348A
公开(公告)日：1991-08-26
申请号：JP33385089
申请日：1989-12-22
申请人： HITACHI LTD
发明人： OKAMURA MASAKI
IPC分类号： H02K19/24
摘要： PURPOSE:To enable common use of a standard control circuit by disposing an insulator, projecting the conductor from one end, in a gap between the inner circumferential wall of an armature core and an alternator coil and employing the conductor as an electrical connecting means. CONSTITUTION:Slot wedges 14, 15 are inserted into a gap between an alternator coil 10a wound around an armature core 10 and the opening 10b of an armature core slot. The slot wedge 14 comprises an insulator wedge body 14a and a conducting joint metal 14b formed integrally with the wedge body 14a, and the joint metal 14b is projecting from one end of the wedge body 14a. The wedge body 15 is constructed similarly, and a joint metal 15b is projecting from the opposite ends of a wedge body 15a. The joint metals 14b, 15b constitute electrical connecting means between the alternator coil 10a and a commutator 11 and between a field coil 8 and a voltage regulator 12, respectively.

4. 发明专利

JPS5439733A IGNITION SYSTEM 失效
公开(公告)号：JPS5439733A
公开(公告)日：1979-03-27
申请号：JP10489377
申请日：1977-09-02
申请人： HITACHI LTD
发明人： KIYOUGORA YOSHITO , OKAMURA MASAKI
IPC分类号： F02P11/02
摘要： PURPOSE:To provided an ignition system in which ignition is impossible in reverse by holding a voltage at the gate of the thyristor for some period after pulser voltage has bocome naught (O). CONSTITUTION:As the engine turns, the output signale of the pulser 6 causes current flows through the gate of the thyristor which in turn causes the condenser 3 to discharge its stored energy; that is, sparks then jump across the spark plug electrodes. As the output wave from the pulser 6 bocomes zero (O), as in all, the energy stored in the ignition condenser 26 is discharged through the resisters 23 and 25, there being a constant flow of current through the gate of thyristor 5. When a voltage B11 is built up and bocomes higher than the charging voltage of the condenser-tunneling voltage of tunneling diode 27, the diode 27 is broken down, discharging the stored energy rapidly. Accordingly, the voltage of current flowing through the gate of the thyristor 5 becomes zero (O).

5. 发明专利

JPS52145710A STRUCTURE OF GENERATOR ELEMENT 失效
公开(公告)号：JPS52145710A
公开(公告)日：1977-12-05
申请号：JP6232976
申请日：1976-05-31
申请人： HITACHI LTD
发明人： OKAMURA MASAKI
IPC分类号： H02K21/22 , H02K3/32
摘要： PURPOSE:To let a generator element structure have a perfect water proofness by making an insulator existing among a conductor and an iron core water proof one body form having a combining part pulled out between a conductor and an iron core.

6. 发明专利

JP2005093146A Connection structure and method for connecting conductors, and rotary electric machine and ac generator using same 审中-公开
标题翻译：用于连接导体的连接结构和方法，以及旋转电机和使用该电机的交流发电机
公开(公告)号：JP2005093146A
公开(公告)日：2005-04-07
申请号：JP2003322377
申请日：2003-09-16
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ONOSE SHIN , OKAMURA MASAKI , ISHIKAWA NORITOSHI
IPC分类号： H01R43/02 , H01R4/02 , H02K3/52
摘要： PROBLEM TO BE SOLVED: To provide a connection structure and method capable of preventing local heat radiation and metallically jointing a wire with insulation coating and a conductor member without removing an insulation coating of the wire, a rotary electric machine with the connection structure, and an AC generator using the same.
SOLUTION: By applying pressure and electricity by an electrode of resistance welding, a current is made to flow to radiate heat, with which, a coating of the wire with the insulation coating is softened, and released, and the wire with the insulation coating and the conductor member can be metallically jointed by a connection supporting member. By using this connection structure and the connection method, the stabilization of a jointing process and connection quality can be attained.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决问题的方案为了提供一种能够防止局部热辐射和金属接合绝缘涂层和导体部件的连接结构和方法，而不去除导线的绝缘涂层，具有连接结构的旋转电机，以及使用其的交流发电机。
解决方案：通过电阻焊接电极施加压力和电流，使电流流向辐射热，使绝缘涂层的导线的涂层软化和释放，并将导线与绝缘涂层和导体构件可以通过连接支撑构件金属连接。通过使用该连接结构和连接方法，可以实现连接过程的稳定化和连接质量。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JPH06351193A AC MOTOR WITH VACUUM PUMP 失效
公开(公告)号：JPH06351193A
公开(公告)日：1994-12-22
申请号：JP13164993
申请日：1993-06-02
申请人： HITACHI LTD
发明人： OKAMURA MASAKI
IPC分类号： H02K7/14 , H02K7/18
摘要： PURPOSE:To increase the performance and efficiency of an AC motor and a vacuum pump by driving the motor at high speed, while improving cooling efficiency and noise suppression. CONSTITUTION:An AC motor 2 and a vacuum pump 3 are assembled into one body. A first rotary shaft 10a and a second rotary shaft 10b are separately fixed on each side of a claw magnetic pole rotor iron core 7 and the second rotary shaft 10b and a rotor 13 of the vacuum pump 3 are spline-joined. The motor 2 and the vacuum pump 3 are driven together by an internal combustion engine through a gear, chain, etc. Furthermore, through-holes 10c, 7a, 7b, 7c, 10d are formed for supplying lubricating oil from the internal combustion engine and then the inside of the AC motor 2 and the vacuum pump 3 are lubricated and cooled.

8. 发明专利

JPH01170352A ROTOR CORE FOR INDUCTOR TYPE AC GENERATOR AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH01170352A
公开(公告)日：1989-07-05
申请号：JP32706187
申请日：1987-12-25
申请人： HITACHI LTD
发明人： OKAMURA MASAKI
IPC分类号： H02K15/02 , H02K19/24
摘要： PURPOSE:To eliminate components of a cooling fan, and to reduce the number of components, the number of operating steps by integrally providing a cut and erected plate which operates as the fan between adjacent pawl poles. CONSTITUTION:A rotor core 6 having a pair of pawl poles 5 is press-fitted and held on a rotary shaft 1. A stator core 8 on which a generating coil 7 is wound is clamped fixedly to generator covers 2, 3. A field coil 9 is hung fixedly from the inner periphery of the core 8. A fan 10 for sucking air from the exterior of a generator and discharging it to the exterior is forged integrally with a rotor core 6 as a cut and erected plate between the poles 5.

9. 发明专利

JPS6065280A CONTACTLESS IGNITIOR FOR INTERNAL-COMBUSTION ENGINE 失效
公开(公告)号：JPS6065280A
公开(公告)日：1985-04-15
申请号：JP17300983
申请日：1983-09-21
申请人： HITACHI LTD
发明人： KOIKE HIROSHI , KATADA HIROSHI , OKAMURA MASAKI
IPC分类号： F02P5/155 , F02P11/02
摘要： PURPOSE:To distinctly know the operation of an over-revolution preventing circuit by applying positive feedback into an output voltage comparing circuit from the output of a revolution-number detecting circuit and allowing the operation revolution number of the over-revolution preventing circuit to be provided with hysteresis. CONSTITUTION:In the range between t0 and t2 where the engine speed is low, the time in said range is long, so the voltage VC at a point C reaches a standard voltage VG at the intermediate time t1, and the output VD of a comparator 28 is shortcircuited before a standard voltage VH is reached, and a power transistor is cut-off by the output supplied from an ignition position control circuit, and ignition is performed. When the engine speed exceeds a set value, the output VD of the comparator 28 does not lower to L and charged, and at the time when the output VD reaches the standard voltage VH, the output VJ of a comparator 33 becomes H, and spark F is suspended. At this time, VJ increases, and also VD increases through a condenser 32, and operation is stabilized because positive feedback is applied. As the number of revolution increases and reduces, an over-revolution preventing circuit 20 operates, and the stop and recovery of spark are repeated.

10. 发明专利

JPS5825573A CYLINDER DISTRIBUTION SYSTEM FOR ELECTRONIC ADVANCE ANGLE CAPACITOR DISCHARGE TYPE IGNITION UNIT 失效
公开(公告)号：JPS5825573A
公开(公告)日：1983-02-15
申请号：JP12295681
申请日：1981-08-07
申请人： HITACHI LTD
发明人： OKAMURA MASAKI
IPC分类号： F02P7/03 , F02P3/08
摘要： PURPOSE:To eliminate the need for a control circuit per cylinder by adding a flip-flop, which distinguishes each cylinder by either a negative signal or a positive signal of a pulser, to an electronic advance angle CDI. CONSTITUTION:In a two cylinder engine as an example, the output of pulsers 3 and 4, which provide ignition timing are applied to a flip-flop 96, the output of which generates two kinds of triangle waves at circuits 97 and 98. The triangle waves are added to a comparison circuit 99, thereby producing a rectangular wave is proportion to ignition timing, in a transistor 54. The output of the pulsers 3 and 4 are applied to a flip-flop 100 at the same time, and transistors 55 and 56 are respectively made conductive with each other. The rectangular wave obtained previously is alternatively applied to transistors 93 and 94. With this action, an electronic advance angle CDI can be converted to a multiple cylinder service by adding only the flip-flop 100.

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