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1. 发明申请

US20100259122A1 Magnetic member, motor device, magnetizing method, and storage device 审中-公开
标题翻译：磁性部件，电机装置，磁化方法和存储装置
公开(公告)号：US20100259122A1
公开(公告)日：2010-10-14
申请号：US12660738
申请日：2010-03-03
申请人： Isamu Takehara , Shinji Kinoshita , Hiromitsu Gotoh
发明人： Isamu Takehara , Shinji Kinoshita , Hiromitsu Gotoh
IPC分类号： H02K21/22 , H02K15/03
CPC分类号： H02K1/2786 , H02K15/03 , H02K21/22 , Y10T29/49012
摘要： A method of magnetizing a magnetic member for a rotor of a motor device. The magnetic member has a thickness t in the radial direction of the magnetic member satisfying the relation πD/(0.75MP−π)
摘要翻译：一种磁化用于电动机装置的转子的磁性部件的方法。磁性部件的磁性部件的径向方向的厚度t满足关系式p / Dgr（D）（0.75MP-＆pgr;）

2. 发明申请

US20060255677A1 Magnetic member, motor device, magnetizing method and storage device 审中-公开
标题翻译：磁性元件，电机装置，磁化方法及存储装置
公开(公告)号：US20060255677A1
公开(公告)日：2006-11-16
申请号：US11406165
申请日：2006-04-18
申请人： Isamu Takehara , Shinji Kinoshita , Hiromitsu Gotoh
发明人： Isamu Takehara , Shinji Kinoshita , Hiromitsu Gotoh
IPC分类号： H02K21/12
CPC分类号： H02K1/2786 , H02K15/03 , H02K21/22 , Y10T29/49012
摘要： Reducing cogging of a small permanent magnet, while maintaining its magnetization characteristics favorable. Denoting the inner diameter of the permanent magnet by D, the pitch per one magnetic pole by P, and the phase number of an alternating current by M, and when D is 20 mm or less and the thickness of the permanent magnet t is set to fulfill the formula (4), then a good permanent magnet with low cogging is obtained. πD/(0.75PM−π)
摘要翻译：减小小永磁体的齿槽，同时保持其磁化特性。将永磁体的内径表示为D，将每个磁极的间距设为P，将交流电的相位数设为M，当D为20mm以下，将永久磁铁t的厚度设定为满足公式（4），得到具有低齿槽的良好永磁体。 piD /（0.75PM-pi）

3. 发明申请

US20050174004A1 Permanent magnet for motor, motor and magnetizing method 审中-公开
标题翻译：电机，电机和磁化方法永磁
公开(公告)号：US20050174004A1
公开(公告)日：2005-08-11
申请号：US10525886
申请日：2003-09-29
申请人： Isamu Takehara , Shinji Kinoshita , Hiromitsu Gotoh
发明人： Isamu Takehara , Shinji Kinoshita , Hiromitsu Gotoh
IPC分类号： H01F1/053 , H01F13/00 , H01F41/02 , H02K1/27 , H02K15/03 , H02K21/22
CPC分类号： H02K21/222 , H01F13/003 , H01F41/028 , H02K1/2786 , H02K15/03 , Y10T29/49009 , Y10T29/49075
摘要： The present invention relates to a cylindrical permanent magnet which is used in a micro DC brushless motor used in a compact hard disc etc. An Sm—Co based magnetic material is used as a magnetic material and the permanent magnet has domains magnetized in a radial direction and arranged at regular intervals in a circumferential direction. Provided that P represents a pitch corresponding to an average of an inner circumferential length and outer circumferential length in one of the domains, D denotes an inner diameter of the permanent magnet, t represents a thickness in the radial direction, N represents the number of domains, and M represents the number of AC phases for driving the motor, D is set to 20 (mm) or smaller and t is set to satisfy the relation of t≦πD/(NM−π).
摘要翻译：本发明涉及一种用于小型硬盘等的微型DC无刷电动机的圆筒型永久磁铁。作为磁性材料使用Sm-Co系磁性材料，永久磁铁具有沿径向磁化的磁畴并且沿圆周方向以规则的间隔布置。假设P表示与其中一个畴中的内圆周长度和外周长度的平均值相对应的间距，D表示永磁体的内径，t表示径向厚度，N表示畴的数量，M表示用于驱动电动机的交流相位数，D设定为20（mm）以下，t设定为满足t <= piD /（NM-pi）的关系。

4. 发明申请

US20080111436A1 Permanent magnet for a motor, motor, and magnetizing method 审中-公开
标题翻译：用于电机，电机和磁化方法的永久磁铁
公开(公告)号：US20080111436A1
公开(公告)日：2008-05-15
申请号：US11978756
申请日：2007-10-30
申请人： Isamu Takehara , Shinji Kinoshita , Hiromitsu Gotoh
发明人： Isamu Takehara , Shinji Kinoshita , Hiromitsu Gotoh
IPC分类号： H02K21/12
CPC分类号： H02K21/222 , H01F13/003 , H01F41/028 , H02K1/2786 , H02K15/03 , Y10T29/49009 , Y10T29/49075
摘要： The present invention relates to a cylindrical permanent magnet which is used in a micro DC brushless motor used in a compact hard disc etc. An Sm—Co based magnetic material is used as a magnetic material and the permanent magnet has domains magnetized in a radial direction and arranged at regular intervals in a circumferential direction. Provided that P represents a pitch corresponding to an average of an inner circumferential length and outer circumferential length in one of the domains, D denotes an inner diameter of the permanent magnet, t represents a thickness in the radial direction, N represents the number of domains, and M represents the number of AC phases for driving the motor, D is set to 20 (mm) or smaller and t is set to satisfy the relation of t≦πD/(NM−π).
摘要翻译：本发明涉及一种用于小型硬盘等的微型DC无刷电动机的圆筒型永久磁铁。作为磁性材料使用Sm-Co系磁性材料，永久磁铁具有沿径向磁化的磁畴并且沿圆周方向以规则的间隔布置。假设P表示与其中一个畴中的内圆周长度和外周长度的平均值相对应的间距，D表示永磁体的内径，t表示径向厚度，N表示畴的数量，M表示用于驱动电动机的交流相位数，D设定为20（mm）以下，t设定为满足t <= piD /（NM-pi）的关系。

5. 发明申请

US20070291406A1 Information Recording and Playback Apparatus and Method of Manufact-Uring the Same 有权
标题翻译：信息记录和播放装置及其制造方法
公开(公告)号：US20070291406A1
公开(公告)日：2007-12-20
申请号：US11628892
申请日：2005-05-31
申请人： Isamu Takehara , Shinji Kinoshita , Hiromitsu Gotoh
发明人： Isamu Takehara , Shinji Kinoshita , Hiromitsu Gotoh
IPC分类号： G11B17/02
CPC分类号： G11B19/2009 , G11B33/1493 , H02K21/16
摘要： An object is to provide an information recording and playback apparatus that is capable of reducing, as much as possible, reading and writing errors caused by magnetic leakage flux on the inner peripheral side of a magnetic disk. An information recording and playback apparatus 1 includes a rotor R rotatably holding a magnetic disk 60 and being provided with a permanent magnet 51 on the outer peripheral surface; a stator core 3 fixed to a base member 2, the stator core 3 protruding to the inner side in the radial direction in such a manner as to oppose the permanent magnet 51, the stator core, 3 including a plurality of stator poles 3a around which coils 3b are wound; a shield plate 70 disposed between the magnetic disk 60 and the stator core 3 in such a manner as to cover the stator core 3 and to have a small gap 62 between the rotating body R, the shielding plate 70 blocking magnetic flux from the permanent magnet 51 and the stator core 3; and a magnetic head 61 for carrying out recording and playback of the magnetic disk 60 by moving forward and backward between the shield plate 70 and the magnetic disk 60. The magnetic head 61 moves forward and backward on the stator poles 3a.
摘要翻译：本发明的目的是提供一种能够尽可能地减少磁盘内周侧的磁漏磁通引起的读写错误的信息记录再生装置。信息记录和重放装置1包括可旋转地保持磁盘60的转子R并且在外周表面上设置有永磁体51; 定子铁芯3固定在基体2上，定子铁芯3以与径向相反的方式突出到与永久磁铁51相对的定子铁芯3，定子铁心3包括多个定子极3a 卷绕线圈3b; 以覆盖定子芯3的方式设置在磁盘60和定子芯3之间的屏蔽板70，并且在旋转体R之间具有小间隙62，屏蔽板70阻挡来自永磁体的磁通量 51和定子铁心3; 以及用于通过在屏蔽板70和磁盘60之间向前和向后移动来执行磁盘60的记录和重放的磁头61。磁头61在定子极3a上前后移动。

6. 发明授权

US07921547B2 Method of magnetizing permanent magnet for a motor 有权
标题翻译：励磁电机永磁体励磁方法
公开(公告)号：US07921547B2
公开(公告)日：2011-04-12
申请号：US11978800
申请日：2007-10-30
申请人： Isamu Takehara , Shinji Kinoshita , Hiromitsu Gotoh
发明人： Isamu Takehara , Shinji Kinoshita , Hiromitsu Gotoh
IPC分类号： H01F7/127
CPC分类号： H02K21/222 , H01F13/003 , H01F41/028 , H02K1/2786 , H02K15/03 , Y10T29/49009 , Y10T29/49075
摘要： In a method for magnetizing a permanent magnet for a motor, the permanent magnet has a thickness t in a radial direction of the permanent magnet satisfying the relation of t≦πD/(NM−π), where D represents an inner diameter of the permanent magnet having a value of 20 mm or less, N represents the number of the magnetic domains of the permanent magnet, and M represents the number of alternating current phases for driving the motor. In a first magnetizing step, the permanent magnet is magnetized in one direction corresponding to the radial direction. In a second magnetizing step, the permanent magnet magnetized in the first magnetizing step is magnetized to form inverse magnetic domains that are arranged at regular intervals in the radial direction and that reverse the magnetizing direction of the permanent magnet.
摘要翻译：在一种用于磁化用于电动机的永久磁铁的方法中，永磁体具有满足t＆nlE;＆amp; D /（NM-＆pgr）的关系的永磁体的径向厚度t，其中D表示内径的永磁体的值为20mm以下，N表示永磁体的磁畴数，M表示用于驱动电机的交流相的数量。在第一磁化步骤中，永磁体在对应于径向方向的一个方向上被磁化。在第二磁化步骤中，在第一磁化步骤中磁化的永磁体被磁化以形成沿径向以规则间隔布置并使永磁体的磁化方向反转的反磁畴。

7. 发明授权

US07796357B2 Information recording and playback apparatus and method of manufacturing the same 有权
标题翻译：信息记录和播放装置及其制造方法
公开(公告)号：US07796357B2
公开(公告)日：2010-09-14
申请号：US11628892
申请日：2005-05-31
申请人： Isamu Takehara , Shinji Kinoshita , Hiromitsu Gotoh
发明人： Isamu Takehara , Shinji Kinoshita , Hiromitsu Gotoh
IPC分类号： G11B33/12
CPC分类号： G11B19/2009 , G11B33/1493 , H02K21/16
摘要： An object is to provide an information recording and playback apparatus that is capable of reducing, as much as possible, reading and writing errors caused by magnetic leakage flux on the inner peripheral side of a magnetic disk. An information recording and playback apparatus 1 includes a rotor R rotatably holding a magnetic disk 60 and being provided with a permanent magnet 51 on the outer peripheral surface; a stator core 3 fixed to a base member 2, the stator core 3 protruding to the inner side in the radial direction in such a manner as to oppose the permanent magnet 51, the stator core 3 including a plurality of stator poles 3a around which coils 3b are wound; a shield plate 70 disposed between the magnetic disk 60 and the stator core 3 in such a manner as to cover the stator core 3 and to have a small gap 62 between the rotating body R, the shielding plate 70 blocking magnetic flux from the permanent magnet 51 and the stator core 3; and a magnetic head 61 for carrying out recording and playback of the magnetic disk 60 by moving forward and backward between the shield plate 70 and the magnetic disk 60. The magnetic head 61 moves forward and backward on the stator poles 3a.
摘要翻译：本发明的目的是提供一种能够尽可能地减少磁盘内周侧的磁漏磁通引起的读写错误的信息记录再生装置。信息记录和重放装置1包括可旋转地保持磁盘60的转子R并且在外周表面上设置有永磁体51; 固定在基体2上的定子铁芯3，定子芯3以与永久磁铁51相对的方式向径向内侧突出的定子铁心3，定子铁芯3具有多个定子极3a，线圈 3b缠绕; 以覆盖定子芯3的方式设置在磁盘60和定子芯3之间的屏蔽板70，并且在旋转体R之间具有小间隙62，屏蔽板70阻挡来自永磁体的磁通量 51和定子铁心3; 以及用于通过在屏蔽板70和磁盘60之间前后移动来执行磁盘60的记录和重放的磁头61.磁头61在定子极3a上前后移动。

8. 发明授权

US07307364B2 Motor and recording medium drive device 有权
标题翻译：电机和记录介质驱动装置
公开(公告)号：US07307364B2
公开(公告)日：2007-12-11
申请号：US10549297
申请日：2003-03-19
申请人： Isamu Takehara , Shinji Kinoshita
发明人： Isamu Takehara , Shinji Kinoshita
IPC分类号： H02K5/16
CPC分类号： F16C33/107 , F16C17/026 , F16C17/10 , F16C2370/12 , G11B19/2009 , H02K7/085
摘要： The invention provides a motor that is provided with a fluid dynamic bearing for rotatably supporting a shaft body, by the dynamic pressure of fluid filling a clearance between itself and a shaft body support part. The motor is provided with: a stator having cores and coils; a rotor having permanent magnets arranged in a ring shape on the radial inner side of the stator, facing the cores and coils; and a fluid dynamic bearing which rotatably supports the rotor with respect to the stator. The fluid dynamic bearing is provided with: a cylindrical shaft body whose cross section is approximately cruciform; a shaft body support part, in which a shaft body insertion hole is formed for accommodating the shaft body; and a fluid which is filled into a clearance formed between the shaft body and the shaft body insertion hole, and there is provided a dynamic pressure generation unit comprising the fluid, and dynamic pressure generating grooves formed in at least one of the outer face of the shaft body, and the inner face of the shaft body insertion hole facing this outer face.
摘要翻译：本发明提供了一种电动机，其具有用于可旋转地支撑轴体的流体动力轴承，通过填充其本身与轴体支撑部分之间的间隙的流体的动态压力。电动机设有：具有铁芯和线圈的定子; 具有永磁体的转子，该永磁体以定子的径向内侧布置成环形，面对所述芯和线圈; 以及相对于定子可旋转地支撑转子的流体动力轴承。流体动力轴承设有：截面近似十字形的圆柱形轴体; 轴体支撑部，其中形成有用于容纳所述轴体的轴体插入孔; 以及填充在轴体和轴体插入孔之间形成的间隙中的流体，并且设置有包括流体的动压产生单元和形成在所述轴体的至少一个的动压生成槽轴体和轴体插入孔的面向该外表面的内表面。

9. 发明申请

US20060220480A1 Motor and recording medium drive device 有权
标题翻译：电机和记录介质驱动装置
公开(公告)号：US20060220480A1
公开(公告)日：2006-10-05
申请号：US10549297
申请日：2003-03-19
申请人： Isamu Takehara , Shinji Kinoshita
发明人： Isamu Takehara , Shinji Kinoshita
IPC分类号： H02K5/16
CPC分类号： F16C33/107 , F16C17/026 , F16C17/10 , F16C2370/12 , G11B19/2009 , H02K7/085
摘要： The invention provides a motor that is provided with a fluid dynamic bearing for rotatably supporting a shaft body, by the dynamic pressure of fluid filling a clearance between itself and a shaft body support part. The motor is provided with: a stator having cores and coils; a rotor having permanent magnets arranged in a ring shape on the radial inner side of the stator, facing the cores and coils; and a fluid dynamic bearing which rotatably supports the rotor with respect to the stator. The fluid dynamic bearing is provided with: a cylindrical shaft body whose cross section is approximately cruciform; a shaft body support part, in which a shaft body insertion hole is formed for accommodating the shaft body; and a fluid which is filled into a clearance formed between the shaft body and the shaft body insertion hole, and there is provided a dynamic pressure generation unit comprising the fluid, and dynamic pressure generating grooves formed in at least one of the outer face of the shaft body, and the inner face of the shaft body insertion hole facing this outer face.
摘要翻译：本发明提供了一种电动机，其具有用于可旋转地支撑轴体的流体动力轴承，通过填充其本身与轴体支撑部分之间的间隙的流体的动态压力。电动机设有：具有铁芯和线圈的定子; 具有永磁体的转子，该永磁体以定子的径向内侧布置成环形，面对所述芯和线圈; 以及相对于定子可旋转地支撑转子的流体动力轴承。流体动力轴承设有：截面近似十字形的圆柱形轴体; 轴体支撑部，其中形成有用于容纳所述轴体的轴体插入孔; 以及填充在轴体和轴体插入孔之间形成的间隙中的流体，并且设置有包括流体的动压产生单元和形成在所述轴体的至少一个的动压生成槽轴体和轴体插入孔的面向该外表面的内表面。

10. 发明授权

US5932941A Spindle motor and method of manufacturing the same 失效
标题翻译：主轴电机及其制造方法
公开(公告)号：US5932941A
公开(公告)日：1999-08-03
申请号：US882806
申请日：1997-06-26
申请人： Shinji Kinoshita , Shinji Ota , Hiromitsu Gotoh
发明人： Shinji Kinoshita , Shinji Ota , Hiromitsu Gotoh
IPC分类号： H02K1/28 , H02K1/27 , H02K7/00 , H02K21/22
CPC分类号： H02K7/00
摘要： A spindle motor comprises a motor shaft, which is rotatably supported by a motor frame via a bearing and a hub, which is formed integral with the motor shaft for securing a data disk. The hub is made of a powder metallurgical product and is bonded with the motor shaft by sintering.
摘要翻译：主轴电动机包括电动机轴，其经由轴承和轮毂由电动机框架可旋转地支撑，该电动机轴与电动机轴形成一体，用于固定数据盘。轮毂由粉末冶金产品制成，并通过烧结与电机轴结合。

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