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1. 发明专利

JP2005237200A Electromotive vehicle using permanent magnet rotary electric machine, and permanent magnet rotary electric machine 有权
标题翻译：使用永磁电机的电动车和永磁电动机
公开(公告)号：JP2005237200A
公开(公告)日：2005-09-02
申请号：JP2005142080
申请日：2005-05-16
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： TAJIMA FUMIO , MATSUNOBU YUTAKA , KAWAMATA SHOICHI , SHIBUKAWA SUETARO , KOIZUMI OSAMU , ODA KEIJI
IPC分类号： H02K1/22 , H02K1/24 , H02K1/27 , H02K19/10 , H02K21/14
CPC分类号： Y02T10/641
摘要： PROBLEM TO BE SOLVED: To provide the permanent magnet rotary electric machine suppressing cogging torques and torque pulsations, while acquiring reluctance torque by an auxiliary magnetic pole, and to provide the electromotive vehicle which uses this permanent magnet rotary electric machine. SOLUTION: By having magnetic voids provided between a permanent magnet of a rotor and an auxiliary magnetic pole, mutually adjacent circumferentially to this permanent magnet, cogging torques and the toque pulsations are suppressed by making changes gentle in the distribution of the magnetic flux density in the surface of the rotor. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：在通过辅助磁极获取磁阻转矩的同时，提供抑制齿槽转矩和转矩脉动的永久磁铁旋转电机，并提供使用该永久磁铁旋转电机的电动车辆。解决方案：通过在转子的永磁体和辅助磁极之间设置磁性空隙，与该永磁体相邻地相邻地相邻地邻接，齿槽转矩和扭矩脉动通过使磁通量的分布变化平缓来抑制转子表面的密度。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2005198500A Rotary machine 审中-公开
标题翻译：旋转机
公开(公告)号：JP2005198500A
公开(公告)日：2005-07-21
申请号：JP2005091796
申请日：2005-03-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAMOTO NORIAKI , TANEDA KOKI , SHIBUKAWA SUETARO , TAJIMA FUMIO
IPC分类号： H02K5/18 , H02K9/22
摘要： PROBLEM TO BE SOLVED: To provide a motor and a generator enhancing heat radiation, while attaining miniaturization of the motor.
SOLUTION: The motor is made in a form of axially positioning in its both ends brackets 30, 40 to arrange in an inner side thereof a radial rib (protrusion 31), the motor is constituted to be assembled in such a manner that the rib 31 is arranged in between spaces of coil ends 14 adjacent to each other of a stator. By making the protrusion 31 serve as a refrigerant passage, a stator winding further improves the heat radiation, so as to provide the motor of high efficiency, miniaturization and light weight. An elastic body superior in thermal conductivity and insulation may be interposed in between the coil end 14 and the inner surface of the bracket.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供增强散热的电动机和发电机，同时实现电动机的小型化。解决方案：电动机制成轴向定位在其两端支架30,40中的形式，以在其内侧布置有径向肋（突起31），该电动机构造成以下述方式组装：肋31布置在相邻于定子的线圈端部14的空间之间。通过使突起31作为制冷剂通路，定子绕组进一步提高了散热，从而提供高效率，小型化和重量轻的电动机。导热性和绝缘性优异的弹性体可插入线圈端14和支架内表面之间。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2001292548A STATOR OF ROTATING ELECTRIC MACHINE 失效
公开(公告)号：JP2001292548A
公开(公告)日：2001-10-19
申请号：JP2000246640
申请日：2000-08-16
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： YASUHARA TAKASHI , SHIBUKAWA SUETARO , KOIZUMI OSAMU , UEDA TOSHIAKI , KIMURA YASUHIKO , OWADA KIYOTAKE , MORI YOSHIKI , OBARA SANSHIRO , KONDO HISASHI , ANAMI HIROYASU , HARA SHUICHI , KOBAYASHI HIDEMITSU
IPC分类号： H02K1/14 , H02K3/12 , H02K3/18 , H02K3/28 , H02K3/34 , H02K3/44 , H02K3/52 , H02K15/085 , H02K15/12
摘要： PROBLEM TO BE SOLVED: To shorten the length of a coil end part by a large extent. SOLUTION: A straight flat wire is formed into a U shape in advance, the two sides of a straight line are inserted into slots that are adjacent, while sandwiching stator gear teeth, and both edges of the inverted U-shaped side of a coil are connected with a thin plate rod-shaped piece, thus forming the coil to achieve a one-turn closed circuit. By making an inverted U-shaped side end face for obtaining a stator coil for forming a prescribed number of turns, the thin plate rod-shaped pieces overlap for connecting by inserting the plurality of coils, and by connecting both edges of the inverted U-shaped side, the plate thickness at a part where the both are overlapped is reduced by half, so that the thickness corresponding to the plate thickness of a flat-square wire coil is achieved, when both of them are overlapped.

4. 发明专利

JP2001069703A METHOD OF MOUNTING MAGNET OF SYNCHRONOUS MOTOR 失效
公开(公告)号：JP2001069703A
公开(公告)日：2001-03-16
申请号：JP24475999
申请日：1999-08-31
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： KUNIYA KENJI , SHIBUKAWA SUETARO
IPC分类号： H02K1/27
摘要： PROBLEM TO BE SOLVED: To make it possible to mount magnets onto the surface of a rotor without using an adhesive, by mounting a plurality of mounting hardware comprising non-magnetic spring members onto the surface of the rotor with rivets or screws at an equal interval in the circumferential direction, and by mounting the magnets between the neighboring mounting hardware. SOLUTION: A plurality of rivet passing holes 6a are provided in a rotor 2 radially from its center at an equal interval in the circumferential direction. Countersink 6c are formed to prevent the heads of rivets 4 from projecting out of the outside circumference of the rotor 2 at the outside circumference side of the rivet passing holes 6a. Rivet passing holes 6b are provided in mounting hardware 3, too, and the rotor 2 and the mounting hardware 3 are connected with rivets in a state that the positions of the rivet passing holes 6a, 6b each provided are matched. The mounting position of magnets 5 in the circumferential direction can easily be controlled by mounting the magnets 5 between neighboring mounting hardware 3 mounted onto the rotor 2 with the rivets 4.

5. 发明专利

JP2000224790A ROTATING MACHINE AND MOTOR-DRIVEN VEHICLE WITH THE MACHINE 失效
公开(公告)号：JP2000224790A
公开(公告)日：2000-08-11
申请号：JP2434999
申请日：1999-02-01
申请人： HITACHI LTD
发明人： TAJIMA FUMIO , MATSUNOBU YUTAKA , KAWAMATA SHOICHI , SHIBUKAWA SUETARO , KOIZUMI OSAMU
IPC分类号： H02K1/24 , B60L9/18 , H02K1/28
摘要： PROBLEM TO BE SOLVED: To provide a rotating machine and a motor-driven vehicle therewith which has a high material availability rate in manufacturing a rotor core, and is compact and lightweight. SOLUTION: The rotor core 4 of this rotating machine 1 provided with a stator 2 having a rotor core 4 around which a stator winding 5 is wound, and a rotor 3 having a rotor core 7 rotatably facing the rotor core 4 so that a clearance may be formed therebetween, consists of a plurality of salient-pole magnetic cores 73 disposed in circumferential direction on the clearance side, and a plurality of rotor yoke parts 76 forming a magnetic path passing the magnetic flux of the respective salient-pole magnetic cores 73. Each salient-pole magnetic core 73 and each rotor yoke part 76 facing each salient-pole magnetic core 73 are divided as one unit circumferentially.

6. 发明专利

JP2000134893A BRUSHLESS MOTOR 失效
公开(公告)号：JP2000134893A
公开(公告)日：2000-05-12
申请号：JP30806098
申请日：1998-10-29
申请人： HITACHI LTD
发明人： HINO TOKUAKI , KITAMURA MASAJI , ITO MOTOYA , TAJIMA FUMIO , SHIBUKAWA SUETARO , KUNIYA KENJI , NIHEI HIDEKI , NAKADA TAKANORI
IPC分类号： H02K29/00 , H02K21/22
摘要： PROBLEM TO BE SOLVED: To obtain a high efficiency brushless motor containing no cogging torque and having a simple structure wherein the stator is constructed by winding an armature winding around tees and the rotor is constructed by applying magnets on the surface of a yoke such that the relationship between the pole pitch and the circumferential length at the magnetized part of a magnet falls within a specified range. SOLUTION: Magnets 3 of identical shape and magnetization are arranged at a constant pole pitch to a rotor iron 4 and pasted thereto. Polarity of the magnets is alternated and the intensity of magnetization is equalized for all magnets and made uniform on the magnet surface. The pole pitch τp and the circumferential length τm of the magnet 3 satisfy a relationship τm

7. 发明专利

JPH11299199A PERMANENT-MAGNET ELECTRIC ROTATING MACHINE, AND MOTOR-DRIVEN VEHICLE USING THE MACHINE 失效
公开(公告)号：JPH11299199A
公开(公告)日：1999-10-29
申请号：JP10644898
申请日：1998-04-16
申请人： HITACHI LTD
发明人： MATSUNOBU YUTAKA , TAJIMA FUMIO , KAWAMATA SHOICHI , KOBAYASHI KOJI , SHIBUKAWA SUETARO , KOIZUMI OSAMU
IPC分类号： H02K29/00 , H02K1/27 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To reduce the cogging torque of an electric rotating machine without any skew of its molded magnets. SOLUTION: A permanent-magnet type electric rotating machine has a stator 1 with a stator core 2 and a rotor 6 with a rotor core 7 which faces the stator core 2 with a gap 5 between and has a plurality of permanent magnets 8 integrated thereinto. In the machine, an angle (mechanical angle) θ which the circumferential width of the outer peripheral surface of each permanent magnet in the stator 1 forms with the shaft center of the rotor 6 is set to θ≈n×τs+16/P, wherein τs, P, and n represent respectively the slot pitch (mechanical angle) of the stator 1, the number of the poles of the machine, and a natural number.

8. 发明专利

JPH1189144A PERMANENT MAGNET ROTARY ELECTRIC MOTOR AND ELECTRIC VEHICLE USING IT 失效
公开(公告)号：JPH1189144A
公开(公告)日：1999-03-30
申请号：JP24391097
申请日：1997-09-09
申请人： HITACHI LTD
发明人： TAJIMA FUMIO , MATSUNOBU YUTAKA , KAWAMATA SHOICHI , SHIBUKAWA SUETARO , KOIZUMI OSAMU
IPC分类号： H02K1/02 , B60L11/18 , H02K1/22 , H02K1/27 , H02K21/16
摘要： PROBLEM TO BE SOLVED: To provide a small and light permanent magnet rotary electric motor with high torque. SOLUTION: This permanent magnet rotary electric motor 1 is composed of a stator 2, having a stator core 4 constituted of a magnetic body and stator winding wires 5 wound to the stator core 4 and of a rotor 3 having a rotor core 8 constituted of the magnetic body and permanent magnets 6 arranged in the rotor core 8 at almost equal intervals. Since the rotor cores 8 having magnetic permeability lower than that of the stator core 4 is set to be the state of magnetic saturation magnetic flux density lower than that of the stator core 4 in a bridge 83, magnetic flux leaking in the direction of a salient pole 82 from a magnetic pole piece 84 via the bridge 83, and higher torque can be obtained.

9. 发明专利

JPH10309051A PERMANENT-MAGNET ROTATING ELECTRIC MACHINE 失效
公开(公告)号：JPH10309051A
公开(公告)日：1998-11-17
申请号：JP5308598
申请日：1998-03-05
申请人： HITACHI LTD
发明人： MATSUNOBU YUTAKA , TAJIMA FUMIO , TAWARA KAZUO , KAWAMATA SHOICHI , NOTOHARA YASUO , ISHII MAKOTO , NOMA KEIJI , SHIBUKAWA SUETARO
IPC分类号： H02K1/22 , H02K1/27 , H02K21/16
摘要： PROBLEM TO BE SOLVED: To reduce the size of a motor or to improve the driving efficiency of the motor, by increasing the driving torque of the motor by burying permanent magnets having arcuate shapes and pluralities of magnetic centers in their cross sections perpendicular to a rotating shaft, so that the arcuate and recessed sections of the magnets may be directed to a stator. SOLUTION: A rotor 6 is composed mainly of a rotating shaft 9, a rotor core 7, and ferrite permanent magnets 8 and surrounded by a stator 1. Each magnet 8 has an arcuate shape having two centers at points (a) and (b) in its cross section perpendicular to the rotating shaft 9. The magnets 8 are buried in the rotor core 7 so that the recessed sections of the magnets 8 may be directed to the stator 1. In addition, the magnets 8 are magnetized so that the numbers of poles of adjacent magnets may become opposite to each other end the N- and S-poles of four magnets 8 may be positioned alternately, and then, the magnetic fluxes from the magnets 8 may be concentrated to the two points (a) and (b). Therefore, the size of a permanent-magnet rotating electric machine can be reduced or the driving efficiency of the machine can be improved.

10. 发明专利

JPH10304608A MOTOR 失效
公开(公告)号：JPH10304608A
公开(公告)日：1998-11-13
申请号：JP10293797
申请日：1997-04-21
申请人： HITACHI LTD
发明人： SAKAI TOSHIHIKO , TANEDA KOKI , HIRAMATSU HIROMICHI , YAMAMOTO NORIAKI , ENOMOTO YUJI , ISHIGAMI TAKASHI , ITO MOTOYA , TAJIMA FUMIO , SENOO MASAHARU , SHIBUKAWA SUETARO
IPC分类号： H02K1/16 , H02K1/18
摘要： PROBLEM TO BE SOLVED: To improve ease of assembly and increase the space factor of a coil by forming a structure combined with only flat rolled magnetic steel sheets and strip divided into a plurality of pieces at vicinity parts of both ends in the axial direction of a layer. SOLUTION: This motor is constituted of a central part 1a with a number of flat rolled magnetic steel sheets and strip 3 layered, an end part core pack 1b with a prescribed number of roughly ring-shaped flat rolled magnetic steel sheets and strip 4b, and an end part teeth 1c with prescribed layers of flat rolled magnetic steel sheets and strip 5c whose teeth alone are punched. A stator core 1 is obtained by assembling a coil 2 at the slot of the central part 1a, and assembling the end part teeth 1c at the end part core pack 1b from the core pack and the inner periphery side of the coil 2. As a result, layering thickness can be obtained to its dimensional limit for assembling the core at an extra length after the coil 2 has been inserted, thus it is possible to improve efficiency. It is also possible to prevent a wire material from being damaged and to manufacture coils with a high space factor.

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