公开(公告)号：US5710470A

公开(公告)日：1998-01-20

申请号：US476907

申请日：1995-06-07

申请人： Kimio Komata ,  Toshihiro Otani ,  Yasushi Hisabe ,  Katsutoshi Chiba ,  Akihiro Machida

发明人： Kimio Komata ,  Toshihiro Otani ,  Yasushi Hisabe ,  Katsutoshi Chiba ,  Akihiro Machida

IPC分类号： F16C17/02 ,  F16C17/04 ,  F16C17/10 ,  F16C32/00 ,  F16C32/04 ,  F16C33/10 ,  F16C39/06 ,  G02B26/12 ,  H02K7/09

CPC分类号： F16C33/107 ,  F16C17/10 ,  F16C39/063 ,  G02B26/121

摘要： A hydrodynamic bearing assembly includes a support shaft provided on a stationary member, a rotating member rotatably supported on the support shaft through a hydrodynamic radial bearing and a hydrodynamic thrust bearing, a magnet provided at a stationary side, and a magnetic member provided on the rotating member opposite the magnet. The magnetic member is attracted by the magnetic force from the magnet so that a force acting on the thrust hydrodynamic bearing is cancelled or reduced.

摘要翻译： 一种流体动力轴承组件包括设置在固定构件上的支撑轴，通过流体动力学径向轴承和流体动力推力轴承可旋转地支撑在支撑轴上的旋转构件，设置在固定侧的磁体和设置在旋转的 磁铁对面的部件。 磁性构件被来自磁体的磁力吸引，使得作用在推力流体动力轴承上的力被抵消或减小。

公开(公告)号：US5373391A

公开(公告)日：1994-12-13

申请号：US22136

申请日：1993-02-25

申请人： Soichi Isobe ,  Kimio Komata ,  Toshiaki Ishii ,  Yuuichi Komai

发明人： Soichi Isobe ,  Kimio Komata ,  Toshiaki Ishii ,  Yuuichi Komai

IPC分类号： G02B5/09 ,  G02B7/182 ,  G02B26/12 ,  G02B7/18

CPC分类号： G02B5/09 ,  G02B26/121 ,  G02B7/1821

摘要： A polygon mirror is made up of a rotor including a ceramic ring, a yoke and a mirror surface formation member. The yoke and the mirror surface formation member are secured to an outer periphery of the ceramic ring. A radial dynamic pressure bearing is defined by an inner periphery of the ceramic ring and an outer periphery of the fixing shaft. A thrust dynamic pressure bearing is defined by both end surfaces of the ceramic ring and surfaces of a thrust plate fixedly secured to the stator and confronting both end surfaces of the ceramic ring. The ceramic ring, the yoke and the mirror surface formation member are integrated by the material making up the mirror surface formation member during the molding of the member to form the rotor.

摘要翻译： 多面镜由包括陶瓷环，轭和镜面形成构件的转子构成。 轭和镜面形成构件固定到陶瓷环的外周。 径向动压轴承由陶瓷环的内周和固定轴的外周限定。 推力动压轴承由陶瓷环的两个端面和固定在定子上的面对陶瓷环的两个端面的推力板的表面限定。 陶瓷环，轭和镜表面形成构件在构件成型期间通过构成镜面形成构件的材料一体化以形成转子。

公开(公告)号：US6127756A

公开(公告)日：2000-10-03

申请号：US261902

申请日：1999-03-03

申请人： Tadao Iwaki ,  Kimio Komata

发明人： Tadao Iwaki ,  Kimio Komata

IPC分类号： G11B19/20 ,  F16C17/10 ,  F16C33/10 ,  F16C33/24 ,  H02K7/08 ,  H02G5/16

CPC分类号： F16C33/107 ,  F16C17/026 ,  F16C17/045 ,  F16C17/102 ,  F16C17/105 ,  H02K7/088

摘要： A spindle motor has a rotor, a stator and an air dynamic pressure bearing for supporting the rotor for rotation about a rotational axis relative to the stator. The air dynamic pressure bearing comprises a first dynamic pressure bearing portion and a second dynamic pressure bearing portion. The first dynamic pressure bearing portion comprises a convex side bearing member having a conical convex portion, a concave side bearing member having a conical concave portion receiving the conical convex portion, and dynamic pressure generating grooves formed on one of a surface of the conical convex portion and a surface of the conical concave portion. The second dynamic pressure bearing portion comprises a shaft having a first end fixed to the concave side bearing member and extending along the rotational axis, a bore formed in the convex side bearing member for receiving a second end of the shaft to permit rotation of the convex side bearing member relative to the concave side bearing member about the shaft, and dynamic pressure grooves formed on one of an outer circumferential surface of the shaft and an inner circumferential surface of the bore.

摘要翻译： 主轴电动机具有转子，定子和空气动压轴承，用于支撑转子相对于定子绕旋转轴线旋转。 空气动压轴承包括第一动压轴承部分和第二动压轴承部分。 第一动压轴承部分包括具有锥形凸部的凸侧支承构件，具有容纳锥形凸部的锥形凹部的凹侧支承构件和形成在锥形凸部的一个表面上的动压产生槽 和锥形凹部的表面。 第二动压轴承部分包括轴，其具有固定到凹侧支承构件并沿着旋转轴线延伸的第一端，形成在凸侧轴承构件中的孔，用于接收轴的第二端以允许凸起 侧轴承构件相对于凹侧支承构件绕轴旋转，动压槽形成在轴的外周面和孔的内周面之一上。

公开(公告)号：US5596443A

公开(公告)日：1997-01-21

申请号：US428681

申请日：1995-04-25

申请人： Daisuke Konno ,  Hideo Furukawa ,  Isami Nitta ,  Kimio Komata

发明人： Daisuke Konno ,  Hideo Furukawa ,  Isami Nitta ,  Kimio Komata

IPC分类号： G02B26/12 ,  G02B26/08

CPC分类号： G02B26/121

摘要： A polygon mirror rotor includes a ceramic ring of a generally hollow cylindrical shape having a cylindrical inner surface serving as a sliding surface of a radial hydrodynamic bearing and a pair of end surfaces each serving as a sliding surface of a thrust hydrodynamic bearing. A plastic ring is fixedly fitted over the ceramic ring, and a polygon mirror made of aluminum is fixedly fitted over the plastic ring by shrinkage fit. The plastic ring has a thermal expansion coefficient greater than that of the ceramic ring as well as greater than that of the aluminum polygon mirror, thereby providing a polygon mirror rotor which does not adversely affect the jitter characteristic of a motor incorporating the rotor.

摘要翻译： 多面镜转子包括大致中空圆柱形的陶瓷环，其具有用作径向流体动力轴承的滑动表面的圆柱形内表面和各自用作推力流体动力轴承的滑动表面的一对端表面。 塑料环固定在陶瓷环上，铝制多面镜通过收缩配合固定在塑料环上。 塑料环的热膨胀系数大于陶瓷环的热膨胀系数，并且大于铝多面镜的热膨胀系数，从而提供不影响包含转子的电动机的抖动特性的多面镜转子。