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    Rotary body bearing apparatus, motor and polygon mirror motor
    1.
    发明授权
    Rotary body bearing apparatus, motor and polygon mirror motor 失效
    旋转轴承装置，电机和多面镜电机

    公开(公告)号：US5541462A

    公开(公告)日：1996-07-30

    申请号：US233757

    申请日：1994-04-26

    申请人： Katsutoshi Nii ,  Ichiro Hashimoto ,  Takeshi Nakajima ,  Sueo Akashi

    发明人： Katsutoshi Nii ,  Ichiro Hashimoto ,  Takeshi Nakajima ,  Sueo Akashi

    IPC分类号： F16C17/02 ,  F16C33/10 ,  F16C33/74 ,  F16J15/43 ,  H02K5/16 ,  H02K7/08 ,  F16C32/06 ,  H02K7/09

    CPC分类号： F16C33/1035 ,  F16C17/10 ,  F16C33/746 ,  H02K5/1675

    摘要： A rotary body bearing apparatus has a bearing supporting member, a radial bearing member, a bearing chamber formed in the bearing supporting member for holding the radial bearing member, a rotative shaft supported rotatively by the radial bearing member, and lubricating oil filling a bearing clearance between the rotative shaft and the radial bearing member. An air bubble restraint means restrains the occurrence of air bubbles generated in the lubricating oil by the rotation of the rotative shaft. Even when the rotative shaft rotates at the high speed of rotation, by the provision of the air bubble occurrence restraint means, the occurrence of air bubbles generated in the lubricating oil can be restrained, high accuracy rotation can be maintained and a rotation number fluctuation of the rotary body can be reduced.

    摘要翻译： 旋转体轴承装置具有轴承支撑构件，径向轴承构件，形成在用于保持径向轴承构件的轴承支撑构件中的轴承室，由径向轴承构件旋转地支撑的旋转轴和填充轴承间隙的润滑油 在旋转轴和径向轴承构件之间。 气泡限制装置通过旋转轴的旋转来限制在润滑油中产生的气泡的发生。 即使当旋转轴以高速旋转时，通过设置气泡发生抑制装置，可以抑制在润滑油中产生的气泡的发生，可以保持高精度的旋转和旋转数的波动 可以减小旋转体。

    Motor with a bearing lubricated by magnetic fluid
    2.
    发明授权
    Motor with a bearing lubricated by magnetic fluid 失效
    带有磁性液体润滑的轴承的电机

    公开(公告)号：US5469008A

    公开(公告)日：1995-11-21

    申请号：US165451

    申请日：1993-12-13

    申请人： Takeshi Nakajima ,  Ichiro Hashimoto ,  Tomoyuki Saitou ,  Fusanori Ohira ,  Sueo Akashi ,  Nobukatu Sone ,  Katsutoshi Nii

    发明人： Takeshi Nakajima ,  Ichiro Hashimoto ,  Tomoyuki Saitou ,  Fusanori Ohira ,  Sueo Akashi ,  Nobukatu Sone ,  Katsutoshi Nii

    IPC分类号： H02K5/10 ,  F16C33/10 ,  F16C39/06 ,  G02B26/12 ,  G06K7/10 ,  G11B7/135 ,  H02K5/124 ,  H02K5/167 ,  H02K7/09 ,  H02K7/14

    CPC分类号： H02K7/09 ,  F16C33/1035 ,  F16C39/063 ,  G02B26/121 ,  G06K7/10851 ,  G11B7/1362 ,  H02K5/124 ,  G06K2207/1016

    摘要： A motor has a stator with a base part and a hollow projection as well as a rotor with a shaft which extends into the hollow projection. A radial bearing is mounted between the shaft and the hollow projection. There may be a further radial bearing in the base part of the stator. The radial bearing, lubricated by magnetic fluid, is sealed between the shaft and the projection by a magnetic seal at the end of the hollow projection remote from the base part. The rotor has an annular part extending around the hollow projection, which supports permanent magnets forming an armature. Those permanent magnets interact with drive coils on the stator to cause rotation of the rotor about the axis of the shaft. There is also a magnetic thrust bearing between the annular part of the rotor and the projection of the stator. This magnetic thrust bearing is axially displaced relative to the magnetic seal towards the base part of the stator, to counteract the effect of the magnetic thrust bearing on the magnetic seal.

    摘要翻译： 电动机具有带有基部和中空突起的定子以及具有延伸到中空突起中的轴的转子。 径向轴承安装在轴和中空突起之间。 在定子的基部可以有另外的径向轴承。 由磁性流体润滑的径向轴承通过远离基部的中空突起的端部处的磁性密封件密封在轴和突起之间。 转子具有围绕中空突起延伸的环形部分，其支撑形成电枢的永磁体。 这些永磁体与定子上的驱动线圈相互作用，以使转子围绕轴的轴线旋转。 在转子的环形部分和定子的突起之间还有一个磁力推力轴承。 该磁性推力轴承相对于朝向定子的基部的磁性密封件轴向移位，以抵消磁性推力轴承对磁性密封件的影响。

    Motor, a printer having such a motor and a disk drive system having such a motor
    3.
    发明授权
    Motor, a printer having such a motor and a disk drive system having such a motor 失效
    电动机，具有这种电动机的打印机和具有这种电动机的盘驱动系统

    公开(公告)号：US5574322A

    公开(公告)日：1996-11-12

    申请号：US114176

    申请日：1993-09-01

    申请人： Katsutoshi Nii ,  Takeshi Nakajima ,  Ichiro Hashimoto ,  Satosi Uno ,  Sueo Akashi

    发明人： Katsutoshi Nii ,  Takeshi Nakajima ,  Ichiro Hashimoto ,  Satosi Uno ,  Sueo Akashi

    IPC分类号： H02K5/167 ,  G02B26/12 ,  G11B19/20 ,  H02K5/124 ,  H02K5/16 ,  H02K7/09

    CPC分类号： F16C39/063 ,  F16C33/1035 ,  G02B26/121 ,  G11B19/20 ,  H02K5/124 ,  H02K5/163 ,  H02K7/09 ,  F16C2370/12

    摘要： A motor has a rotor mounted on a stator to rotate about a rotation axis. The rotor is driven due to the interaction of a drive coil on the stator and a permanent magnet on the rotor. A magnetic thrust bearing, having permanent magnets on the stator and rotor, applies a radial thrust force. The radially outer surface of the permanent magnet on the rotor abuts a part of the rotor, so as to resist forces on the permanent magnet at high speed rotation or due to thermal deformation. The permanent magnets on the stator and the rotor may be axially offset by an offset of not more than 1/4 the axial length of the permanent magnets, or the axial length of the longer of the permanent magnets if they have different axial lengths. This generates an axial thrust at the thrust bearing, which counteracts the attractive force between the permanent magnet and the drive coil, and also the weight of the rotor.

    摘要翻译： 电动机具有安装在定子上以绕旋转轴线旋转的转子。 转子由于定子上的驱动线圈和转子上的永磁体的相互作用而被驱动。 在定子和转子上具有永磁体的磁力推力轴承施加径向推力。 转子上的永磁体的径向外表面与转子的一部分相接触，以便在高速旋转或由于热变形时抵抗永磁体上的力。 定子和转子上的永磁体可以轴向偏移永磁体的轴向长度不超过+ E，1/4 + EE的偏移，或者永久磁铁的较长的轴向长度 具有不同的轴向长度。 这在推力轴承处产生轴向推力，其抵消永磁体和驱动线圈之间的吸引力以及抵抗转子的重量。