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1.发明授权Magnetic disk drive, magnetic disk drive manufacturing method and method of estimating gas amount in magnetic disk drive 有权磁盘驱动器，磁盘驱动器的制造方法和磁盘驱动器中的气体量的估计方法公开(公告)号：US07924527B2
公开(公告)日：2011-04-12
申请号：US11899847
申请日：2007-09-07
CPC分类号： G11B25/043 , G11B33/1486
摘要： Embodiments of the present invention provide a magnetic disk drive that can estimate the amount of gas filled in a housing precisely and simply. According to one embodiment, a magnetic disk drive including a housing in which a magnetic disk and a magnetic head are accommodated and gas having lower density than air is filled, a heating body provided in the housing, and means for holding a reference value of a parameter representing the temperature change speed of the heating body when the heating body is heated in the housing filled with a predetermined reference amount of the gas.
摘要翻译： 本发明的实施例提供一种可以精确且简单地估计填充在壳体中的气体量的磁盘驱动器。 根据一个实施例，一种磁盘驱动器包括容纳有磁盘和磁头的壳体和密度低于空气的气体的磁盘驱动器，设置在壳体中的加热体，以及用于保持 表示当加热体在预定参考量的气体中被填充的壳体中加热时加热体的温度变化速度的参数。
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2.发明申请Magnetic disk drive, magnetic disk drive manufacturing method and method of estimating gas amount in magnetic disk drive 有权磁盘驱动器，磁盘驱动器的制造方法和磁盘驱动器中的气体量的估计方法公开(公告)号：US20080068755A1
公开(公告)日：2008-03-20
申请号：US11899847
申请日：2007-09-07
IPC分类号： G11B15/10
CPC分类号： G11B25/043 , G11B33/1486
摘要： Embodiments of the present invention provide a magnetic disk drive that can estimate the amount of gas filled in a housing precisely and simply. According to one embodiment, a magnetic disk drive including a housing in which a magnetic disk and a magnetic head are accommodated and gas having lower density than air is filled, a heating body provided in the housing, and means for holding a reference value of a parameter representing the temperature change speed of the heating body when the heating body is heated in the housing filled with a predetermined reference amount of the gas.
摘要翻译： 本发明的实施例提供一种可以精确且简单地估计填充在壳体中的气体量的磁盘驱动器。 根据一个实施例，一种磁盘驱动器包括容纳有磁盘和磁头的壳体和密度低于空气的气体的磁盘驱动器，设置在壳体中的加热体，以及用于保持 表示当加热体在预定参考量的气体中被填充的壳体中被加热时加热体的温度变化速度的参数。
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公开(公告)号：US08094408B2
公开(公告)日：2012-01-10
申请号：US11903004
申请日：2007-09-19
申请人： Kouki Uefune , Takako Hayakawa , Akihiko Aoyagi , Takashi Kouno , Hitoshi Shindo , Kazuhide Ichikawa
发明人： Kouki Uefune , Takako Hayakawa , Akihiko Aoyagi , Takashi Kouno , Hitoshi Shindo , Kazuhide Ichikawa
CPC分类号： G11B33/148 , G11B25/043
摘要： A sealing type magnetic disc drive comprising a disc, a spindle motor for rotationally driving the disc, a head for recording or reproducing information on the disc, a base on which an actuator assembly is provided to move the head in the radius direction on the disc, and a cover jointed with the base, and low density gas is filled in the space where the base and the cover are joined, wherein low vapor pressure oil or a low viscosity adhesive is filled in a hole present at the joint of the base and the cover.
摘要翻译： 一种密封型磁盘驱动器，包括盘，用于旋转驱动盘的主轴电机，用于在盘上记录或再现信息的磁头，基座，致动器组件设置在基座上，以使磁头沿半径方向在磁盘上移动 以及与基部接合的盖，并且在基部和盖接合的空间填充低密度气体，其中低蒸汽压力油或低粘度粘合剂填充在存在于基部和接头处的孔中 封面。
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公开(公告)号：US20080068745A1
公开(公告)日：2008-03-20
申请号：US11903004
申请日：2007-09-19
申请人： Kouki Uefune , Takako Hayakawa , Akihiko Aoyagi , Takashi Kouno , Hitoshi Shindo , Kazuhide Ichikawa
发明人： Kouki Uefune , Takako Hayakawa , Akihiko Aoyagi , Takashi Kouno , Hitoshi Shindo , Kazuhide Ichikawa
IPC分类号： G11B33/14
CPC分类号： G11B33/148 , G11B25/043
摘要： When a cover is joined with the base of a magnetic disc drive by welding, bubbles in the die casting suddenly expand due to high temperature at the time of welding and blow off fused metal, and a blowhole occurs. Low density gas sealed up in a casing is liable to easily leak through a leak path made by joining of blowholes. Embodiments of the present invention provide a joint structure of a base and a cover so that helium does not easily leak through the blowholes by filling low density gas such as helium gas in a disc drive so as to be capable of sealing for a long period of time. According to one embodiment, after assembly of a magnetic disc drive, the magnetic disk drive is put into a basket and sent in a vacuum container containing low vapor pressure oil. After that, the vacuum container is vacuumed, and the magnetic disc drive put in the basket is immersed in low vapor pressure oil, and a valve is opened to make the vacuum container atmospheric pressure condition. By the change of the condition from vacuum to atmospheric pressure, low vapor pressure oil gets into a leak path. Since helium is dissolved in low vapor pressure oil, diffuses in the oil, and moves in the leak path, the passing speed conspicuously lowers.
摘要翻译： 当通过焊接将盖与磁盘驱动器的基座连接时，由于焊接时的高温和熔融金属的吹出，压铸件中的气泡突然膨胀，并且产生气孔。 密封在壳体中的低密度气体易于通过通过连接气孔而形成的泄漏路径泄漏。 本发明的实施例提供了一种基座和盖子的接头结构，使得氦气通过在盘驱动器中填充诸如氦气之类的低密度气体而不易通过气孔泄漏，以便能够长时间地密封 时间。 根据一个实施例，在组装磁盘驱动器之后，将磁盘驱动器放入筐中并送入含有低蒸汽压力油的真空容器中。 之后，将真空容器抽真空，放入篮中的磁盘驱动器浸入低蒸汽压力油中，打开阀门使真空容器大气压条件。 通过将条件从真空变为大气压，低蒸气压油进入泄漏路径。 由于氦溶解在低蒸气压油中，在油中扩散并在泄漏路径中移动，通过速度显着降低。
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公开(公告)号：US20080259503A1
公开(公告)日：2008-10-23
申请号：US12148697
申请日：2008-04-21
IPC分类号： G11B5/48
CPC分类号： G11B33/1466 , G11B33/08 , G11B33/122 , G11B33/148
摘要： Embodiments of the present invention help to achieve a solder joining structure having high reliability, in which even if a componential material of a flange of a feed-through of a sealed magnetic disk drive is an iron-based material such as kovar, and a componential material of a base of the drive is an aluminum-based alloy, leakage of low-density gas is dramatically reduced. According to one embodiment, a base has a stepped portion in the inside of a periphery of an opening, and an inclined surface extending to the outside of the base is formed at an edge of a surface of the stepped portion, on which a flange of a feed-through is placed, thereby when the stepped portion of the base is joined by soldering with the flange of the feed-through, a solder fillet is formed not only in the inside of the base, but also in the outside thereof.
摘要翻译： 本发明的实施例有助于实现具有高可靠性的焊料接合结构，其中即使密封磁盘驱动器的馈通的凸缘的组分材料是诸如科瓦的铁基材料，并且组分 驱动器的底座的材料是铝基合金，低密度气体的泄漏显着降低。 根据一个实施例，基座在开口的周边的内侧具有阶梯部分，并且在台阶部分的表面的边缘处形成有延伸到基部外侧的倾斜表面， 通过放置馈通，由此当基座的阶梯部分通过与馈通的凸缘焊接而接合时，不仅在基座的内部，而且在其外部形成焊接圆角。
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6.发明授权Magnetic disk drive feed-through solder connection with solder fillet formed inside base and protruding outside base 有权磁盘驱动器通过焊接连接与底部内部形成的焊锡圆角突出到底部公开(公告)号：US08179631B2
公开(公告)日：2012-05-15
申请号：US12148697
申请日：2008-04-21
IPC分类号： G11B33/12
CPC分类号： G11B33/1466 , G11B33/08 , G11B33/122 , G11B33/148
摘要： Embodiments of the present invention help to achieve a solder joining structure having high reliability, in which even if a componential material of a flange of a feed-through of a sealed magnetic disk drive is an iron-based material such as Kovar™, and a componential material of a base of the drive is an aluminum-based alloy, leakage of low-density gas is dramatically reduced. According to one embodiment, a base has a stepped portion in the inside of a periphery of an opening, and an inclined surface extending to the outside of the base is formed at an edge of a surface of the stepped portion, on which a flange of a feed-through is placed, thereby when the stepped portion of the base is joined by soldering with the flange of the feed-through, a solder fillet is formed not only in the inside of the base, but also in the outside thereof.
摘要翻译： 本发明的实施例有助于实现具有高可靠性的焊接接合结构，其中即使密封磁盘驱动器的馈通的凸缘的部件材料是诸如Kovar TM的铁基材料，以及 驱动器的基座的组成材料是铝基合金，低密度气体的泄漏显着降低。 根据一个实施例，基座在开口的周边的内侧具有阶梯部分，并且在台阶部分的表面的边缘处形成有延伸到基部外侧的倾斜表面， 通过放置馈通，由此当基座的阶梯部分通过与馈通的凸缘焊接而接合时，不仅在基座的内部，而且在其外部形成焊接圆角。
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公开(公告)号：US07520674B2
公开(公告)日：2009-04-21
申请号：US11303282
申请日：2005-12-15
CPC分类号： G11B19/2018 , F16C17/107 , F16C33/107 , F16C2370/12
摘要： Embodiments of the invention make high-speed rotation of a magnetic disk, suppression of an increase in electric power consumption, and suppression in shaft falling vibration compatible together in a magnetic disk device. In one embodiment, a magnetic disk device comprises a magnetic disk that records information, and a drive unit that rotates the magnetic disk about a shaft. The drive unit comprises a rotary section that holds the magnetic disk, and a stationary section that supports the rotary section through a fluid bearing. The fluid bearing comprises a radial fluid bearing that bears a load in a direction perpendicular to an axial direction, and a thrust fluid bearing that bears a load in the axial direction. The thrust fluid bearing comprises a first thrust fluid bearing having a small diameter and a shallow clearance, and a second thrust fluid bearing positioned outside an outer periphery of a shaft and being larger in diameter and deeper in clearance than the first thrust fluid bearing.
摘要翻译： 本发明的实施例使磁盘的高速旋转，抑制电力消耗的增加，以及在磁盘装置中兼容在一起的轴下降振动的抑制。 在一个实施例中，磁盘装置包括记录信息的磁盘以及围绕轴旋转磁盘的驱动单元。 驱动单元包括保持磁盘的旋转部分和通过流体轴承支撑旋转部分的静止部分。 流体轴承包括在与轴向方向垂直的方向上承受负载的径向流体轴承，以及在轴向上承载载荷的推力流体轴承。 推力流体轴承包括具有小直径和浅间隙的第一推力流体轴承，以及定位在轴的外周外侧的第二推力流体轴承，其直径大于和第一推力流体轴承间隙更深。
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公开(公告)号：US20060133705A1
公开(公告)日：2006-06-22
申请号：US11303282
申请日：2005-12-15
IPC分类号： F16C32/06
CPC分类号： G11B19/2018 , F16C17/107 , F16C33/107 , F16C2370/12
摘要： Embodiments of the invention make high-speed rotation of a magnetic disk, suppression of an increase in electric power consumption, and suppression in shaft falling vibration compatible together in a magnetic disk device. In one embodiment, a magnetic disk device comprises a magnetic disk that records information, and a drive unit that rotates the magnetic disk about a shaft. The drive unit comprises a rotary section that holds the magnetic disk, and a stationary section that supports the rotary section through a fluid bearing. The fluid bearing comprises a radial fluid bearing that bears a load in a direction perpendicular to an axial direction, and a thrust fluid bearing that bears a load in the axial direction. The thrust fluid bearing comprises a first thrust fluid bearing having a small diameter and a shallow clearance, and a second thrust fluid bearing positioned outside an outer periphery of a shaft and being larger in diameter and deeper in clearance than the first thrust fluid bearing.
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公开(公告)号：US07178983B2
公开(公告)日：2007-02-20
申请号：US11094018
申请日：2005-03-29
申请人： Hitoshi Shindo , Marutomo Goto , Takashi Kouno
发明人： Hitoshi Shindo , Marutomo Goto , Takashi Kouno
IPC分类号： F16C32/06
CPC分类号： G11B19/2018 , F16C17/107 , F16C33/107 , F16C2370/12 , H02K5/1675
摘要： A rotational member and a stationary member included in a spindle motor provided with air bearings are electrically connected while the bearing is rotating, and abrasion of the rotational member and the stationary member at stages of starting and stopping and damaging the rotational member and the stationary member by external shocks that may be exerted thereon during transportation and handling are avoided. In one embodiment, a sleeve is formed integrally with a motor base. The sleeve has an inside surface serving as a radial-bearing surface that forms a radial bearing together with the outside surface of a rotational shaft, and a thrust-bearing surface that forms thrust bearing together with a thrust plate attached to the rotational shaft. The radial-bearing surface of the sleeve is provided with a recess (groove) for holding lubricating oil while the rotational shaft is rotating. A gap not forming a bearing is formed between the circumference of the thrust plate and the inside surface of the sleeve to hold the lubricating oil while the rotational shaft is rotating.
摘要翻译： 包括在设置有空气轴承的主轴电机中的旋转构件和静止构件在轴承旋转的同时被电连接，并且在起动和停止的阶段以及旋转构件和固定构件的磨损，并且损坏旋转构件和固定构件 避免了在运输和处理期间可能施加于其上的外部冲击。 在一个实施例中，套筒与马达座一体地形成。 套筒具有作为径向轴承表面的内表面，其与旋转轴的外表面一起形成径向轴承，以及与附接到旋转轴的止推板一起形成推力轴承的推力轴承表面。 套筒的径向承载表面设置有用于在旋转轴旋转时保持润滑油的凹槽（凹槽）。 在推力板的圆周和套筒的内表面之间形成不形成轴承的间隙，以在旋转轴旋转时保持润滑油。
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公开(公告)号：US20060181169A1
公开(公告)日：2006-08-17
申请号：US11355415
申请日：2006-02-15
申请人： Hitoshi Shindo , Marutomo Goto , Takashi Kouno
发明人： Hitoshi Shindo , Marutomo Goto , Takashi Kouno
CPC分类号： G11B19/2018 , F16C17/026 , F16C17/102 , F16C33/107 , F16C2370/12 , G11B17/038 , G11B25/043 , G11B33/08 , H02K5/1675 , H02K5/24
摘要： Embodiments of the invention provide a magnetic disk drive having improved vibration characteristics and a reduced size. In one embodiment, a magnetic disk drive comprises: a motor shaft for rotating a magnetic disk; a sleeve for rotatably supporting the motor shaft; and a motor hub into which the motor shaft is press fit. The motor hub supports the magnetic disk and includes a projection portion having an inner surface and an outer surface. The inner surface is in contact with the press-fit motor shaft in directions perpendicular to the rotational axis of the motor shaft. The outer surface faces the sleeve.
摘要翻译： 本发明的实施例提供了具有改善的振动特性和减小尺寸的磁盘驱动器。 在一个实施例中，磁盘驱动器包括：用于旋转磁盘的马达轴; 用于可旋转地支撑电动机轴的套筒; 以及电动机轴，电动机轴被压入其中。 马达轮毂支撑磁盘并且包括具有内表面和外表面的突出部分。 内表面与压配马达轴在垂直于马达轴旋转轴线的方向上接触。 外表面面向套筒。
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