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1. 发明公开

EP1424765A1 Low-profile stepping motor with two coils arranged flush with each other 有权
标题翻译： Flacher Schrittmotor mit zwei in der gleichen Ebene liegenden Spulen
公开(公告)号：EP1424765A1
公开(公告)日：2004-06-02
申请号：EP03022354.9
申请日：2003-10-04
申请人： Minebea Co. Ltd.
发明人： Matsushita, Kunitake , Sano, Hiroshi , Nagata, Toshihiko
IPC分类号： H02K37/14 , H02K1/14
CPC分类号： H02K1/14 , H02K16/04 , H02K37/14
摘要： A low-profile stepping motor comprises: an upper twin-stator yoke plate composed of first and second upper stator yokes; a lower twin-stator yoke plate composed of first and second lower stator yokes; first and second coil units fixedly sandwiched between the upper and lower stator yoke plates so as to be arranged horizontally flush with each other; and a rotor assembly including a cylindrical magnet and disposed between the first and second coil units. In the stepping motor, one of the upper and lower twin-stator yoke plates is structured such that one half of its pole teeth partitioned in half by a predetermined datum line and open spaces each residing between two adjacent pole teeth of the other half are positioned symmetrically about the predetermined datum line, whereby the one twin-stator yoke plate can be used in common to the other twin-stator yoke plate.
摘要翻译：小型步进电机包括：由第一和第二上定子轭组成的上双定子轭板; 由第一和第二下定子轭构成的下双定子轭板; 第一和第二线圈单元固定地夹在上定子轭板和下定子轭板之间，以便彼此水平地相对布置; 以及包括圆柱形磁体并设置在第一和第二线圈单元之间的转子组件。在步进电动机中，上下双定子轭板之一被构造成使得其极齿的一半分隔成预定的基准线，并且每个驻留在另一半的两个相邻极齿之间的开放空间被定位对称地围绕预定的基准线，由此一个双定子轭板可以与另一个双定子轭板共同使用。

2. 发明公开

EP1414141A1 Low-profile stepping motor with two coils arranged flush with each other horizontally 有权
标题翻译： Flacher Schrittmotor mit zwei horizontal nebeneinanderliegenden Spulen
公开(公告)号：EP1414141A1
公开(公告)日：2004-04-28
申请号：EP03022060.2
申请日：2003-10-02
申请人： MINEBEA CO., LTD.
发明人： Matsushita, Kunitake , Sano, Hiroshi , Nagata, Toshihiko
IPC分类号： H02K37/14 , H02K16/04
CPC分类号： H02K37/14 , H02K1/145 , H02K16/04 , H02K21/145
摘要： A low-profile stepping motor has a stator assembly structured such that first and second coil units are disposed flush with each other horizontally and are sandwiched between upper and lower stator yoke pieces each comprising first and second stator yokes which are punched out integrally with each other, are shaped symmetrically, and which each have a plurality of pole teeth along its semi-circular inner circumference. The upper and lower stator yoke pieces are fixedly put together via the coils such that hollow-cylindrical protrusions formed in the upper and lower stator yoke pieces are inserted into through-holes of first and second coil bobbins from the upper and lower sides, respectively, and have their abutting end surfaces welded, bonded or otherwise fixed to each other, whereby the coil units are surely held between the upper and lower stator yoke pieces.
摘要翻译：定子单元具有与上定子轭（31a，31b）的中空圆柱形突起（33a，33b）相对的各自的中空圆柱形突起（36a，36b）的相应的下定子轭（34a，34b）。线圈单元（40A，40B）夹在上定子轭和下定子轭之间。转子组件（50）可旋转地布置在由定子单元的极齿形成的圆形开放空间中。

3. 发明公开

EP1434331A2 Motor with built-in bearing 有权
标题翻译：轴承用于电动机
公开(公告)号：EP1434331A2
公开(公告)日：2004-06-30
申请号：EP03029404.5
申请日：2003-12-19
申请人： MINEBEA Co., Ltd.
发明人： Matsushita, Kunitake , Sano, Hiroshi , Nagata, Toshihiko
IPC分类号： H02K5/173
CPC分类号： F16C19/163 , F16C19/50 , F16C2380/27 , H02K5/1732 , H02K7/06 , H02K7/081 , H02K7/083
摘要： The rotor sleeve (26) has a flange (26b) provided at one end of the cylindrical portion (26a) thereof and the boss (29) is disposed so as to oppose the flange (26b) of the rotor sleeve (26). The motor further comprises a plurality of bearing balls (30) rotatably disposed between the boss (29) and flange (26b) of the rotor sleeve (26).

4. 发明授权

EP0690549B1 An electrical rotating machine 失效
标题翻译：电气旋转机械
公开(公告)号：EP0690549B1
公开(公告)日：1998-01-07
申请号：EP95304566.3
申请日：1995-06-28
申请人： MINEBEA CO., LTD.
发明人： Matsushita, Kunitake , Yamawaki, Takayuki , Matsuura, Hideki , Sano, Hiroshi
IPC分类号： H02K37/14 , H02K5/15 , H02K1/18
CPC分类号： H02K5/15 , H02K37/14

5. 发明公开

EP0701069A1 Bearing system in a motor for FDD 失效
标题翻译： Lageranordnungfüreinen汽车eines Diskettenantriebs
公开(公告)号：EP0701069A1
公开(公告)日：1996-03-13
申请号：EP94306689.4
申请日：1994-09-12
申请人： MINEBEA CO.,LTD.
发明人： Nagata, Toshihiko , Yamawaki, Takayuki , Sano, Hiroshi , Matsushita, Kunitake
IPC分类号： F16C23/04 , H02K5/167
CPC分类号： F16C19/163 , F16C17/08 , F16C19/12 , F16C2380/27 , F16H2057/0213 , H02K7/081 , H02K2205/03 , H02K2213/09
摘要： An object of the present invention is to provide an improved bearing system in a motor for an FDD apparatus which is simple in the construction and maintained high in the ratational accuracy of a rotary shaft for optimizing write and read actions of th FDD apparatus.
A bearing system in a motor for FDD acccording to the present invention comprises: a protective cap (9) mounted to one side of the motor; (2) a first pivot bearing (11) arranged movable to and from the protective cap (9) in the axial direction of a rotary shaft (7); a thrust spring (15) provided for urging the first pivot bearing (11) in the axial direction of the rotary shaft (7); the rotary shaft (7) having a rotor (7) fixedly mounted thereto and rotatably supported at one end by the first pivot bearing (11) and at the other end by a second pivot bearing (23) mounted to a base for installation of the motor (2); and an aligment bushing (17) arranged through which the rotary shaft (7) of the motor (2) extends without direct contact and closely fitted into a positioning hole (22) provided in a plate (1) to which the motor (2) is secured. Accordingly, its construction is simple. The rotary shaft (7) remains not in direct contact with the alignment bushing (17) and its leadscrew (8) can thus rotate at a higher accuracy, eliminating intrinsic drawbacks of the FDD motor (2). In rotation, a thrust is ederted across the first pivot bearing (11) in the motor (2) to the rotary shaft (7) and such wearing properties as between the thrust spring (15) and the ball in the conventional system needs not to be accounted for. Also, the thrust will be lessened by a combination of the base portion (12) of the pivot bearing (11) and the protective cap (9) which both are made of low-cost synthetic resin.
摘要翻译：本发明的目的是提供一种用于FDD装置的电动机中的改进的轴承系统，该装置结构简单并且保持高旋转轴的定标精度，以优化FDD装置的写入和读取动作。根据本发明的用于FDD的电动机中的轴承系统包括：安装在电动机一侧的保护盖（9）（2）可沿旋转轴（7）的轴向方向移动到保护盖（9）和从保护盖（9）移动的第一枢转轴承（11）; 推力弹簧（15），设置用于在所述旋转轴（7）的轴向上推动所述第一枢转轴承（11）。旋转轴（7）具有固定地安装在其上的转子（7），并且在一端由第一枢转轴承（11）可旋转地支撑，另一端由安装到基座上的第二枢转轴承（23）安装电机（2）; 和分配衬套（17），电动机（2）的旋转轴（7）穿过该分配衬套延伸而不直接接触并紧密地装配到设置在电动机（2）的板（1）中的定位孔（22）中，是安全的。因此，其结构简单。旋转轴（7）保持不与对准衬套（17）直接接触，并且其丝杠（8）因此能够以更高的精度旋转，从而消除了FDD电动机（2）的内在缺陷。在旋转中，推力通过电动机（2）中的第一枢转轴承（11）旋转到旋转轴（7），并且在常规系统中的推力弹簧（15）和球之间的这种磨损特性不需要被计入。此外，通过枢转轴承（11）的基部（12）和保护盖（9）的组合，推力将减小，两者均由低成本的合成树脂制成。

6. 发明授权

EP0289043B1 Stepping motor 失效
公开(公告)号：EP0289043B1
公开(公告)日：1993-01-27
申请号：EP88106913.2
申请日：1988-04-29
申请人： MINEBEA CO.,LTD.
发明人： Matsushita, Kunitake , Sakuma, Hiroshi , Yamwaki, Takayuki , Yoshikura, Takashi , Sano, Hiroshi , Suzuki, Yuzuru , Torii, Michihiro , Ohnuki, Tohru
IPC分类号： H02K37/14
CPC分类号： H02K37/14

7. 发明授权

EP1434331B1 Motor with built-in bearing 有权
标题翻译： Lagerfüreinen Elektromotor
公开(公告)号：EP1434331B1
公开(公告)日：2007-09-05
申请号：EP03029404.5
申请日：2003-12-19
申请人： MINEBEA Co., Ltd.
发明人： Matsushita, Kunitake , Sano, Hiroshi , Nagata, Toshihiko
IPC分类号： H02K5/173 , F16C19/16 , H02K7/06 , H02K7/08
CPC分类号： F16C19/163 , F16C19/50 , F16C2380/27 , H02K5/1732 , H02K7/06 , H02K7/081 , H02K7/083

8. 发明授权

EP1414141B1 Low-profile stepping motor with two horizontally juxtaposed coils 有权
标题翻译：具有两个水平相邻的线圈平面步进电机
公开(公告)号：EP1414141B1
公开(公告)日：2007-08-08
申请号：EP03022060.2
申请日：2003-10-02
申请人： MINEBEA Co., Ltd.
发明人： Matsushita, Kunitake , Sano, Hiroshi , Nagata, Toshihiko
IPC分类号： H02K37/14 , H02K16/04
CPC分类号： H02K37/14 , H02K1/145 , H02K16/04 , H02K21/145

9. 发明公开

EP1434331A3 Motor with built-in bearing 有权
标题翻译：轴承用于电动机
公开(公告)号：EP1434331A3
公开(公告)日：2005-04-13
申请号：EP03029404.5
申请日：2003-12-19
申请人： MINEBEA Co., Ltd.
发明人： Matsushita, Kunitake , Sano, Hiroshi , Nagata, Toshihiko
IPC分类号： H02K5/173 , F16C19/16 , H02K7/06 , H02K7/08
CPC分类号： F16C19/163 , F16C19/50 , F16C2380/27 , H02K5/1732 , H02K7/06 , H02K7/081 , H02K7/083
摘要： The rotor sleeve (26) has a flange (26b) provided at one end of the cylindrical portion (26a) thereof and the boss (29) is disposed so as to oppose the flange (26b) of the rotor sleeve (26). The motor further comprises a plurality of bearing balls (30) rotatably disposed between the boss (29) and flange (26b) of the rotor sleeve (26).

10. 发明授权

EP0720168B1 Bearing installation in a floppy disk driver motor 失效
标题翻译：在软盘驱动器马达的存储设备
公开(公告)号：EP0720168B1
公开(公告)日：2004-10-20
申请号：EP95309501.5
申请日：1995-12-28
申请人： MINEBEA CO.,LTD.
发明人： Nagata, Toshihiko , Yamawaki, Takayuki , Sano, Hiroshi , Matsushita, Kunitake
IPC分类号： G11B19/20 , F16C17/08 , H02K7/08 , G11B21/08 , G11B5/55
CPC分类号： F16C19/163 , F16C17/08 , F16C19/12 , F16C2370/12 , F16C2380/27 , G11B19/2009

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