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1.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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2.发明授权公开(公告)号：US07568839B2
公开(公告)日：2009-08-04
申请号：US10589422
申请日：2005-02-17
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/045 , F16C17/107 , F16C33/1085 , F16C2370/12 , G11B19/2009 , H02K7/085
摘要： A fluid dynamic pressure bearing has an annular dynamic pressure generating face having a dynamic pressure generating groove, which draws a working fluid toward a midway position in the radial direction from the inside and outside of a thrust bearing plate in the radial direction when a shaft and a housing are rotated relative to each other. The dynamic pressure generating groove is provided on thickness direction end faces of the thrust bearing plate or on an inner surface of the housing, and an inner groove section is located on an inner peripheral side of the dynamic pressure generating face on the end faces and is recessed more than the dynamic pressure generating face in the thickness direction. A through-hole extends through the thrust bearing plate in the thickness direction so as to open to the dynamic pressure generating face, and a communicating cavity connects the opening portion of the through-hole and the inner groove section.
摘要翻译： 流体动压轴承具有环形动压产生面，其具有动压产生槽，其在径向方向上从止推轴承板的内侧和外侧在径向方向上沿径向从中间位置拉动工作流体， 壳体相对于彼此旋转。 动压产生槽设置在推力轴承板的厚度方向端面上或壳体的内表面上，内侧槽部位于端面的动压产生面的内周侧，为 在厚度方向上比动压产生面凹陷更多。 通孔在厚度方向上延伸穿过止推轴承板，以便打开动压产生面，并且连通腔将通孔的开口部和内槽部连通。
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3.发明申请公开(公告)号：US20070177832A1
公开(公告)日：2007-08-02
申请号：US10589422
申请日：2005-02-17
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/045 , F16C17/107 , F16C33/1085 , F16C2370/12 , G11B19/2009 , H02K7/085
摘要： The generation of bubbles can be suppressed by enabling a stable supply of working fluid to a dynamic pressure generating groove, and oscillation at the time of rotation and leakage of working fluid can be prevented effectively by efficiently releasing any bubbles generated. There is provided a fluid dynamic pressure bearing 1 provided with an annular dynamic pressure generating face 17 made by forming a dynamic pressure generating groove, which draws a working fluid 14 toward a midway position in the radial direction from the inside and outside of a thrust bearing plate 13 in the radial direction, when a shaft 10 and a housing 11 are rotated relative to each other about the axis, on thickness direction end faces 13a, 13b of the thrust bearing plate 13, or on an inner surface of the housing 11, and an inner groove section 16, which is located on an inner peripheral side thereof and that is depressed more than the dynamic pressure generating face 17 in the thickness direction, on the end faces 13a, 13b. Moreover there is provided a through hole 19 which passes through the thrust bearing plate 13 in the thickness direction so as to open to the dynamic pressure generating face 17, and there is provided a communicating cavity 20 which connects the opening portion of the through hole 19 and the inner groove section 16.
摘要翻译： 可以通过使动态压力产生槽稳定地供给工作流体来抑制气泡的产生，并且通过有效地释放产生的气泡，可以有效地防止工作流体的旋转和泄漏时的振动。 提供了一种流体动压轴承1，其设置有环形动压产生面17，该环形动压产生面17通过形成动压产生槽而形成，动压产生槽从推力轴承的内侧和外侧向径向的中间位置拉动工作流体14 板13在径向方向上，当轴10和壳体11绕轴线相对于推力轴承板13的厚度方向端面13a，13b延伸，或者在壳体的内表面上 11以及位于其内周侧并在厚度方向上比动压产生面17压下的内槽部16在端面13a，13b上。 而且，在厚度方向上设置有贯通推力轴承板13的通孔19，以通向动压产生面17，并且设置有连通孔20，连通孔20连通通孔19的开口部 和内槽部16。
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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：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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8.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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9.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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