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公开(公告)号：US07191806B2
公开(公告)日：2007-03-20
申请号：US10525465
申请日：2004-03-11
IPC分类号： B65B31/04
CPC分类号： F16N37/003
摘要： The opening of an oil container 11 for storing oil 12 is sealed airtight with a cover member 32. A one-sided-bag-shaped fluid dynamic pressure bearing 10 is seated on an O-ring 25 and fixed airtight onto the upper surface of a bearing seating 30. Inanexhaust position with the distal end portion of an injection tube 36 positioned away from an oil level, the inside of the oil container 11 is evacuated by a vacuum pump 22 through a suction/exhaust passage including a suction/exhaust through-hole 17, thus turning the inside of the one-sided-bag-shaped fluid dynamic pressure bearing (10) into a vacuum. In this state, a control device drives a moving device to raise the oil container 11 to an injection position and releases the suction/exhaust passage to the atmosphere. This causes the oil 12 to be injected into the one-sided-bag-shaped fluid dynamic pressure bearing 10 through an oil injection passage including the injection tube 36.
摘要翻译： 用于储存油12的油容器11的开口用盖构件32密封地密封。 单面袋状流体动压轴承10位于O形环25上，并且气密地固定在轴承座30的上表面上。 在喷射管36远离油位的远端部分的排气位置，油容器11的内部通过包括吸入/排气通孔17的抽吸/排气通道由真空泵22抽真空，因此 将单面袋状流体动压轴承（10）的内部转动成真空。 在这种状态下，控制装置驱动移动装置将油容器11升高到喷射位置，并将吸入/排出通道释放到大气中。 这使得油12通过包括注射管36的注油通道注入到单面袋形流体动压轴承10中。
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公开(公告)号：US20050173196A1
公开(公告)日：2005-08-11
申请号：US10525465
申请日：2004-03-11
CPC分类号： F16N37/003
摘要： The opening of an oil container 11 for storing oil 12 is sealed airtight with a cover member 32. A one-sided-bag-shaped fluid dynamic pressure bearing 10 is seated on an O-ring 25 and fixed airtight onto the upper surface of a bearing seating 30. Inanexhaust position with the distal end portion of an injection tube 36 positioned away from an oil level, the inside of the oil container 11 is evacuated by a vacuum pump 22 through a suction/exhaust passage including a suction/exhaust through-hole 17, thus turning the inside of the one-sided-bag-shaped fluid dynamic pressure bearing (10) into a vacuum. In this state, a control device drives a moving device to raise the oil container 11 to an injection position and releases the suction/exhaust passage to the atmosphere. This causes the oil 12 to be injected into the one-sided-bag-shaped fluid dynamic pressure bearing 10 through an oil injection passage including the injection tube 36.
摘要翻译： 用于储存油12的油容器11的开口用盖构件32密封地密封。 单面袋状流体动压轴承10位于O形环25上，并且气密地固定在轴承座30的上表面上。 在喷射管36远离油位的远端部分的排气位置，油容器11的内部通过包括吸入/排气通孔17的抽吸/排气通道由真空泵22抽真空，因此 将单面袋状流体动压轴承（10）的内部转动成真空。 在这种状态下，控制装置驱动移动装置将油容器11升高到喷射位置，并将吸入/排出通道释放到大气中。 这使得油12通过包括注射管36的注油通道注入到单面袋形流体动压轴承10中。
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公开(公告)号：US06575633B2
公开(公告)日：2003-06-10
申请号：US09996828
申请日：2001-11-29
申请人： Hiromitsu Goto , Shinji Kinoshita , Toru Kumagai , Yukihiro Nakayama , Chihiro Tazawa , Mitsuharu Iwamoto , Ryoji Yoneyama
发明人： Hiromitsu Goto , Shinji Kinoshita , Toru Kumagai , Yukihiro Nakayama , Chihiro Tazawa , Mitsuharu Iwamoto , Ryoji Yoneyama
IPC分类号： F16C3206
CPC分类号： F16C33/107 , F16C17/026 , F16C17/045 , F16C17/107 , H02K5/1675
摘要： In a hydraulic bearing motor, by means of dynamic pressure generating grooves provided on a thrust shaft with a larger diameter not only on the end face thereof but also on the shaft surface thereof, pressures generated in oil when rotating a shaft body are made to be applied not only in the axial direction but also in the radial direction with high magnitude. This can provide the hydraulic bearing motor as being capable of satisfying features of exhibiting small NRRO, and vibration and shock resistance even with a thinned hydraulic bearing motor.
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公开(公告)号：US06552456B2
公开(公告)日：2003-04-22
申请号：US09996830
申请日：2001-11-29
申请人： Hiromitsu Goto , Shinji Kinoshita , Toru Kumagai , Yukihiro Nakayama , Chihiro Tazawa , Mitsuharu Iwamoto , Ryoji Yoneyama
发明人： Hiromitsu Goto , Shinji Kinoshita , Toru Kumagai , Yukihiro Nakayama , Chihiro Tazawa , Mitsuharu Iwamoto , Ryoji Yoneyama
IPC分类号： H02K708
CPC分类号： F16C33/107 , F16C17/107 , F16C2370/12 , G11B19/2009 , H02K5/1675
摘要： A hydraulic dynamic pressure bearing motor has a rotational shaft mounted to undergo rotation about a rotational axis and having a shaft section and a flange section. A sleeve has a cavity for receiving the rotational shaft. A cover member is disposed over an open end of the sleeve cavity. A hydraulic dynamic pressure bearing includes minute radial and thrust clearances disposed between outer surface portions of the shaft and flange sections of the rotational shaft and inner surface portions of the sleeve and the cover member. A lubricating fluid is disposed in the minute radial and thrust clearances. The minute radial and thrust clearances are dimensioned so that during a non-rotational state of the rotational shaft, the flange section of the rotational shaft contacts preselected inner surface portions of the sleeve and the cover member while the shaft section of the rotational shaft does not contact any portion of the sleeve and an inner peripheral surface of the cover member.
摘要翻译： 液压动压轴承马达具有安装成绕旋转轴线旋转并具有轴部和凸缘部的旋转轴。 套筒具有用于接收旋转轴的空腔。 盖构件设置在套筒空腔的开口端上。 液压动压轴承包括设置在轴的外表面部分和旋转轴的凸缘部分以及套筒和盖部件的内表面部分之间的微小的径向和推力间隙。 润滑流体以微小的径向和推力间隙设置。 微小的径向和推力间隙的尺寸使得在旋转轴的非旋转状态期间，旋转轴的凸缘部分接触套筒和盖构件的预选的内表面部分，而旋转轴的轴部分不 接触套筒的任何部分和盖构件的内周表面。
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5.发明申请Fluid dynamic pressure bearing device, motor, and recording medium driving device 审中-公开流体动压轴承装置，电动机和记录介质驱动装置公开(公告)号：US20050111766A1
公开(公告)日：2005-05-26
申请号：US10647947
申请日：2003-08-26
IPC分类号： F16C17/02 , F16C17/10 , F16C33/10 , F16C33/74 , G11B19/20 , H02K5/167 , H02K7/08 , H02K21/22 , F16C32/06
CPC分类号： F16C33/107 , F16C17/026 , F16C17/10 , F16C33/74 , F16C2370/12
摘要： Disclosed is a fluid dynamic pressure bearing device rotatably supporting a shaft member by dynamic pressure of a liquid such as oil or water filling the clearance between the shaft member and a shaft member support portion, in which it is possible to maintain bearing properties of the fluid dynamic pressure bearing device for a long period of time. The fluid dynamic pressure bearing device includes: a shaft member having a columnar portion formed substantially in a columnar configuration; a shaft member support portion having a shaft portion insertion hole for accommodating the shaft member; and a dynamic pressure generating portion formed by filling a clearance defined between the shaft member and the shaft member insertion hole with a liquid, with at least one of the surface of the shaft member and the inner wall surface of the insertion hole being equipped with a dynamic pressure generating groove for collecting the liquid to generate dynamic pressure when the shaft member is rotated, in which an annular shaft member protrusion protruding radially outwards is provided on an outer peripheral surface of the columnar portion situated axially on an outer side of the dynamic pressure generating portion.
摘要翻译： 公开了一种流体动压轴承装置，其通过填充轴构件和轴构件支撑部之间的间隙的诸如油或水的液体的动态压力可旋转地支撑轴构件，其中可以保持流体的轴承特性 动态压力轴承装置长时间使用。 流体动压轴承装置包括：轴构件，其具有基本上形成为柱状构造的柱状部分; 轴构件支撑部分，具有用于容纳轴构件的轴部插入孔; 以及动压生成部，其通过用液体填充限定在所述轴构件和所述轴构件插入孔之间的间隙而形成，所述轴构件的表面和所述插入孔的内壁面中的至少一个配备有 动压产生槽，用于在轴构件旋转时收集液体以产生动态压力，其中沿轴向位于动压力外侧的柱状部分的外周表面上设置径向向外突出的环形轴构件突出部 产生部分。
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6.发明申请公开(公告)号：US20100259122A1
公开(公告)日：2010-10-14
申请号：US12660738
申请日：2010-03-03
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;）
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7.发明申请公开(公告)号：US20060255677A1
公开(公告)日：2006-11-16
申请号：US11406165
申请日：2006-04-18
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）
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公开(公告)号：US20050174004A1
公开(公告)日：2005-08-11
申请号：US10525886
申请日：2003-09-29
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。
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公开(公告)号：US07921547B2
公开(公告)日：2011-04-12
申请号：US11978800
申请日：2007-10-30
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。
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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
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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