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1. 发明授权

US5198637A Method of cutting grooves in hydrodynamic bearing made of ceramic material 失效
标题翻译：陶瓷材料水动力轴承切割砂轮的方法
公开(公告)号：US5198637A
公开(公告)日：1993-03-30
申请号：US801664
申请日：1991-12-02
申请人： Yumiko Noda , Ichiro Kamiya , Manabu Toshimitsu , Yoshio Sato , Ryoichi Shinjo
发明人： Yumiko Noda , Ichiro Kamiya , Manabu Toshimitsu , Yoshio Sato , Ryoichi Shinjo
IPC分类号： B23K26/00 , B23K26/40 , B28B11/12 , F16C17/04 , F16C33/04 , F16C33/10 , F16C33/14 , F16C33/24
CPC分类号： F16C33/107 , B23K26/364 , B23K26/40 , F16C17/045 , F16C33/043 , B23K2203/52
摘要： A ceramic hydrodynamic bearing used as a radial or a thrust bearing in a spindle motor for a hard disk driver. The bearing includes a ceramic bearing base having hydrodynamic pressure generating grooves. A sliding surface of the bearing base is irradiated with an energy beam with a high energy density to remove said material, thereby forming hydrodynamic pressure generating groove, and at the same time the grooves are coated with a modification layer that is formed by melting the ceramic material that constitutes said ceramic bearing base with the energy beam and by solidifying said ceramic bearing base.

2. 发明授权

US5471104A Drum motor for VCR 失效
标题翻译：用于录像机的鼓电机
公开(公告)号：US5471104A
公开(公告)日：1995-11-28
申请号：US109706
申请日：1993-08-19
申请人： Manabu Toshimitsu , Shunichi Aiyoshizawa , Yoshikazu Suganuma , Daisuke Konno
发明人： Manabu Toshimitsu , Shunichi Aiyoshizawa , Yoshikazu Suganuma , Daisuke Konno
IPC分类号： G11B5/52 , F16C17/10 , F16C33/04 , F16C33/10 , G11B5/53 , H02K5/16 , H02K7/09 , H02K7/14 , H02K7/08
CPC分类号： F16C33/107 , F16C17/107 , F16C33/043 , G11B5/53 , H02K5/1675 , H02K7/09
摘要： A drum motor for a VCR includes radial and thrust hydrodynamic bearings that are composed of a rotor-side bearing member formed by bringing a pair of first and second thrust plates into direct contact with both end surfaces of a radial bearing element and integrating them into one unit, and a stator-side bearing member in the form of a radial sleeve the inner peripheral surface and both end surfaces of which respectively cooperate with the outer peripheral surface of the radial bearing element and the mutually facing surfaces of the first and second thrust plates. A rotor magnet is secured to a rotating shaft. A motor casing is secured to the outer peripheral surface of the radial sleeve. A stator unit is secured to the motor casing. A dynamic pressure generating groove is provided on either each end surface of the radial sleeve or each of the mutually facing surfaces of the first and second thrust plates. The run-out of a rotor-side unit in both the thrust and radial directions is made extremely small and the change in the relative height of the rotor-side unit in the thrust direction due to a change of the position of the motor in which it is used is minimized.
摘要翻译：用于VCR的鼓式电动机包括径向和推力流体动力轴承，其由转子侧轴承构件组成，转子侧轴承构件通过使一对第一和第二推力板与径向轴承元件的两个端面直接接触而形成，并将它们集成为一个单元以及径向套筒形式的定子侧轴承构件，其内周面和两端面分别与径向轴承元件的外周面和第一和第二止推板的相互面对的表面配合。转子磁体固定在旋转轴上。马达壳体固定在径向套筒的外周表面上。定子单元固定在电动机壳体上。在径向套管的每个端表面或第一和第二推力板的相互面对的表面中的每一个上提供动态压力产生槽。转子侧单元在推力和径向方向上的跳动都非常小，并且由于电动机的位置的变化，转子侧单元在推力方向上的相对高度的变化，其中它被使用最小化。

3. 发明授权

US5224782A Hydrodynamic bearing 失效
标题翻译：水动力轴承
公开(公告)号：US5224782A
公开(公告)日：1993-07-06
申请号：US852146
申请日：1992-04-30
申请人： Sachihiko Miwa , Manabu Toshimitsu , Kazuyuki Kasahara , Yoshikazu Suganuma , Yumiko Noda
发明人： Sachihiko Miwa , Manabu Toshimitsu , Kazuyuki Kasahara , Yoshikazu Suganuma , Yumiko Noda
IPC分类号： F16C33/04 , F16C33/10
CPC分类号： F16C33/107 , F16C17/107 , F16C33/043 , Y10S384/907
摘要： A hydrodynamic bearing for a spindle motor used in an environment of high degree of cleanness. A sliding surface of the hydrodynamic bearing is formed of a ceramic material with a surface roughness Ra not larger than 0.3 microns, and this sliding surface is coated thinly with at least one lubricant selected from among perfluoropolyethers having a functional group reactive with the ceramic material, thereby providing on the sliding surface a uniform thin film with a thickness in the range of from 20 to 100 angstrom and having protecting and lubricating functions. The lubricant is selected from among hydroxyl group-containing perfluoropolyethers, carboxyl group-containing perfluoropolyethers, and ester group-containing. The lubricant contains an antistatic agent.

4. 发明授权

US5322369A Dynamic pressure bearing 失效
标题翻译：动压轴承
公开(公告)号：US5322369A
公开(公告)日：1994-06-21
申请号：US050727
申请日：1993-04-21
申请人： Tadashi Kataoka , Shunsuke Mimura , Yoichi Kanemitsu , Yoshiyuki Maruta , Tatsuo Hinata , Mamoru Suzuki , Manabu Toshimitsu , Shunichi Aiyoshizawa
发明人： Tadashi Kataoka , Shunsuke Mimura , Yoichi Kanemitsu , Yoshiyuki Maruta , Tatsuo Hinata , Mamoru Suzuki , Manabu Toshimitsu , Shunichi Aiyoshizawa
IPC分类号： F16C17/24 , F16C17/04 , F16C32/00 , F16C32/06 , H02K7/08
CPC分类号： F16C17/10 , F16C32/06 , F16C32/0611 , F16C39/00
摘要： A dynamic pressure bearing is provided with a moving side bearing member and a fixed side bearing member so as to support a rotor for rotation by generating a fluid dynamic pressure between the moving side bearing member and the fixed side bearing member. The dynamic pressure bearing includes a high-frequency exciting device for applying a high-frequency vibration to the fixed side bearing member at the time of at least one of start-up and shutdown of the rotor. In this way, both bearing members are kept almost free from contact with each other and a frictional resistance at start-up and/or shutdown is minimized.
摘要翻译：动压轴承具有移动侧支承构件和固定侧支承构件，以便通过在移动侧支承构件和固定侧支承构件之间产生流体动压力来支撑转子来转动。动压轴承包括在转子的起动和停止中的至少一个时对固定侧支承构件施加高频振动的高频励磁装置。以这种方式，两个轴承构件保持几乎没有彼此接触，并且启动和/或停机时的摩擦阻力最小化。

5. 发明授权

US5366298A Hydrodynamic bearing 失效
标题翻译：流体动力轴承
公开(公告)号：US5366298A
公开(公告)日：1994-11-22
申请号：US160189
申请日：1993-12-02
申请人： Manabu Toshimitsu , Hiroko Fuse
发明人： Manabu Toshimitsu , Hiroko Fuse
IPC分类号： F16C17/10 , F16C33/10 , F16C33/16 , F16C33/24 , F16C32/06
CPC分类号： F16C33/107 , F16C17/107 , F16C33/16
摘要： A hydrodynamic bearing includes first and second thrust plates held against respective axially opposite ends of a cylindrical radial bearing member, and a cylindrical radial sleeve provided concentrically with the cylindrical radial bearing. The outer circumferential surface of the cylindrical radial bearing member and the inner circumferential surface of the cylindrical radial sleeve serve as sliding surfaces jointly making up a radial hydrodynamic bearing assembly, and the confronting surfaces of the first and second thrust plates and the end surfaces of the cylindrical radial sleeve serve as sliding surfaces jointly making up a thrust hydrodynamic bearing assembly. At least one of the sliding surfaces of the thrust hydrodynamic bearing assembly has grooves formed therein for generating a hydrodynamic pressure. At least one of the sliding surfaces of the radial hydrodynamic bearing assembly is coated with a uniform hydrogenated amorphous carbon film. At least one of the sliding surfaces of the thrust hydrodynamic bearing assembly is coated with a uniform hydrogenated amorphous carbon film.
摘要翻译：流体动力轴承包括保持在圆柱形径向轴承构件的相应轴向相对端的第一和第二推力板，以及与圆柱形径向轴承同心设置的圆柱形径向套筒。圆筒形径向轴承部件的外圆周表面和圆柱形径向套筒的内圆周表面用作共同构成径向流体动压轴承组件的滑动表面，并且第一和第二推力板的面对面和圆柱形径向套筒作为滑动表面共同构成推力流体动力轴承组件。推力流体动力轴承组件的至少一个滑动表面具有形成在其中的槽，用于产生流体动力学压力。径向流体动力轴承组件的至少一个滑动表面涂覆有均匀的氢化无定形碳膜。推力流体动力轴承组件的至少一个滑动表面涂覆有均匀的氢化无定形碳膜。

6. 发明授权

US4583015A Single-phase brushless motor with multisector stator armature poles having different cross-sections 失效
标题翻译：具有多段定子电枢极的单相无刷电机具有不同的横截面
公开(公告)号：US4583015A
公开(公告)日：1986-04-15
申请号：US630803
申请日：1984-07-13
申请人： Manabu Toshimitsu
发明人： Manabu Toshimitsu
IPC分类号： H02K29/08 , H02K17/10
CPC分类号： H02K29/08
摘要： A single-phase brushless motor which can be manufactured at low cost and which can be started at any rotary position. The motor includes a rotary magnet having a plurality of magnetic poles and a stator armature having a plurality of poles, each of which is wound with a coil carrying a driving current. Each of the poles is divided circumferentially into at least two sectors, the cross sections of which at points where the magnetic flux density is a maximum being different from one another. A single position detector detects the rotary position of the rotary magnet relative to the stator armature, and the driving currents in each of the coils are controlled in accordance with the output of the position detector. In preferred embodiments, the poles have links which join them to a generally cylindrical central core. Holes are formed in at least some of the sectors of each of the poles, having different diameters.
摘要翻译：一种单相无刷电机，可以低成本制造，可以在任何旋转位置启动。电动机包括具有多个磁极的旋转磁体和具有多个磁极的定子电枢，每个磁极缠绕有承载驱动电流的线圈。每个极被圆周地分成至少两个扇区，其中磁通密度最大的点彼此之间的横截面在其中。单个位置检测器检测旋转磁体相对于定子电枢的旋转位置，并且根据位置检测器的输出来控制每个线圈中的驱动电流。在优选实施例中，极具有将它们连接到大致圆柱形的中心芯的链节。在每个极的至少一些扇区中形成有不同直径的孔。

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