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公开(公告)号：EP0215441B1
公开(公告)日：1990-04-18
申请号：EP86112526.8
申请日：1986-09-10
申请人： HITACHI, LTD.
IPC分类号： H02K23/04
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公开(公告)号：EP0173917B1
公开(公告)日：1989-11-08
申请号：EP85110524.7
申请日：1985-08-21
申请人： HITACHI, LTD.
CPC分类号： H02K23/04
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公开(公告)号：EP0215441B2
公开(公告)日：1992-11-25
申请号：EP86112526.8
申请日：1986-09-10
申请人： HITACHI, LTD.
IPC分类号： H02K23/04
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公开(公告)号：EP0237935B1
公开(公告)日：1990-09-12
申请号：EP87103484.9
申请日：1987-03-11
申请人： HITACHI, LTD.
IPC分类号： H02K23/04
CPC分类号： H02K23/04
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公开(公告)号：EP0237935A3
公开(公告)日：1988-08-10
申请号：EP87103484
申请日：1987-03-11
申请人： HITACHI, LTD.
IPC分类号： H02K23/04
CPC分类号： H02K23/04
摘要： A permanent magnet field DC machine comprises a rotor and a stator. The rotor comprises an armature core (3), an armature winding (4), and a commutator (2). The stator comprises a yoke (7), permanent magnets (8) disposed on the inner periphery of the yoke (7), and magnetic pole pieces (9) interposed between the yoke (7) and a portion of each magnetic pole (8). The magnetic pole pieces (8) is made of a material permeability of which is greater than that of the permanent magnets.
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公开(公告)号：EP0237935A2
公开(公告)日：1987-09-23
申请号：EP87103484.9
申请日：1987-03-11
申请人： HITACHI, LTD.
IPC分类号： H02K23/04
CPC分类号： H02K23/04
摘要： A permanent magnet field DC machine comprises a rotor and a stator. The rotor comprises an armature core (3), an armature winding (4), and a commutator (2). The stator comprises a yoke (7), permanent magnets (8) disposed on the inner periphery of the yoke (7), and magnetic pole pieces (9) interposed between the yoke (7) and a portion of each magnetic pole (8). The magnetic pole pieces (8) is made of a material permeability of which is greater than that of the permanent magnets.
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公开(公告)号：EP0215441A2
公开(公告)日：1987-03-25
申请号：EP86112526.8
申请日：1986-09-10
申请人： HITACHI, LTD.
IPC分类号： H02K23/04
摘要： This invention relates to a miniature electric rotating machine having a stator equipped with a field pole on a peripheral circle of a rotor and the field pole is constituted by a permanent magnet (8). Each permanent magnet of a conventional miniature electric rotating machine of this type can be divided into a portion on a magnetizing side and a portion on a demagnetizing side with respect to armature reaction. In the permanent magnet (8) of the present invention, an end portion (ll) on the demagnetizing side, which has directivity different from the magnetizing directions on the magnetizing and demagnetizing sides, is disposed adjacent to the portion on the demagnetizing side.
摘要翻译： 本发明涉及一种具有定子的微型旋转电机，该定子在转子的外周圆上设有场极，而场极由永磁体（8）构成。 这种常规微型旋转电机的每个永磁体可以分别相对于电枢反作用在磁化侧的部分和退磁侧的部分。 在本发明的永磁体（8）中，与退磁侧的部分相邻配置有与磁化方向和磁化方向不同的消磁侧端部（11）。
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公开(公告)号：EP0193079A2
公开(公告)日：1986-09-03
申请号：EP86102049.3
申请日：1986-02-18
申请人： HITACHI, LTD. , HITACHI CABLE, LTD.
发明人： Ito, Motoya , Takahashi, Noriyoshi , Watanabe, Masatoshi , Abukawa, Toshimi , Seya, Takeshi , Kainuma, Hiroshi , Syutoo, Toshiyuki
IPC分类号： H02K15/00 , H02K17/16 , H02K41/025 , H01F41/02 , H01F3/06
CPC分类号： H02K41/025 , H02K15/0012 , H02K17/16 , Y10S264/58 , Y10T29/49012 , Y10T29/49075 , Y10T29/49078
摘要： Disclosed is a method of manufacturing an electromagnetic member (6) having properties of magnetic anisotropy as well as electrical conductivity, comprising the steps of coating an outer circumferential surface of each of a plurality of magnetic strips (4) with a first electrically conductive material (5a) to a predetermined thickness to thereby form a plurality of composite magnetic strips (7), binding the plurality of composite magnetic strips (7), and filling spaces among the plurality of composite magnetic strips (7) in the bundle with a second electrically conductive material (5b) substantially the same as the first electrically conductive material (5a). By this method, a mechanically strong electromagnetic member (6) can be obtained in which adjusting the thickness of the first electrically conductive material (5a), the ratio between the magnetic property and the electrically conductive property can be easily adjusted by adjusting the thickness of the first electrically conductive material (5a) and blow-holes can be prevented from being generated.
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公开(公告)号：EP0111740A1
公开(公告)日：1984-06-27
申请号：EP83111288.3
申请日：1983-11-11
申请人： HITACHI, LTD.
CPC分类号： H02K23/04
摘要： A permanent magnet field type DC machine in which the amount of flux from field poles is changed by effective use of armature reaction thereby to improve characteristics of the DC machine. There is provided a permanent magnet field type DC machine having field poles (3, 4) formed of permanent magnet members (3) and auxiliary magnetic pole members (4) of high permeability which are provided in parallel with each other in the direction of rotation on the peripheral surface of a yoke (2) to oppose an armature (5) with an air gap therebetween, the auxiliary magnetic pole members being magnetized by armature reaction thereby to change the total amount of field magnetic flux from the field poles, wherein the gap between the auxiliary magnetic pole members and armature is selected to be smaller than that between the permanent magnet members and armature, thereby decreasing the reluxtances in the paths of the auxiliary magnetic pole members, so that the armature reaction can be effectively used.
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