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1. 发明授权

US5223758A Spindle motor 失效
标题翻译：主轴电机
公开(公告)号：US5223758A
公开(公告)日：1993-06-29
申请号：US665213
申请日：1991-03-05
申请人： Takashi Kataoka , Yuji Shirao , Daisuke Konno , Yoshio Sato , Yoichi Kanemitsu , Hideo Tsuboi , Shunichi Aiyoshizawa , Kazuyuki Kasahara
发明人： Takashi Kataoka , Yuji Shirao , Daisuke Konno , Yoshio Sato , Yoichi Kanemitsu , Hideo Tsuboi , Shunichi Aiyoshizawa , Kazuyuki Kasahara
IPC分类号： H02K5/167 , F16C17/02 , F16C33/10 , F16C39/06 , H02K5/16 , H02K7/09 , H02K21/22
CPC分类号： F16C32/044 , F16C17/02 , F16C17/107 , F16C25/045 , F16C32/0402 , F16C33/107 , H02K5/165 , H02K7/09
摘要： A spindle motor has a rotor supported by a stator through a thrust bearing and a radial bearing. At least the thrust bearing is a hydrodynamic bearing. The spindle motor is provided with a device for adjusting the thrust laod that is applied to the thrust bearing. The load adjusting device has an electromagnet that is provided on the stator and a permanent magnet that is provided on the rotor in opposing relation to the electromagnet. Either the repelling force or the attraction force, which acts between the electromagnet and the permanent magnet, is controlled by changing the current supplied to the electromagnet.

2. 发明授权

US5089732A Spindle motor 失效
标题翻译：主轴电机
公开(公告)号：US5089732A
公开(公告)日：1992-02-18
申请号：US556255
申请日：1990-07-19
申请人： Daisuke Konno , Sachihiko Miwa , Shunichi Aiyoshizawa , Kazuyuki Kasahara , Yoshio Sato , Kazuto Hirokawa
发明人： Daisuke Konno , Sachihiko Miwa , Shunichi Aiyoshizawa , Kazuyuki Kasahara , Yoshio Sato , Kazuto Hirokawa
IPC分类号： H02K29/00 , F16C33/10 , F16C39/06 , G11B19/20 , H02K5/16 , H02K21/22
CPC分类号： F16C33/107 , F16C17/107 , F16C25/045 , F16C39/063 , G11B19/2009 , H02K5/1677 , F16C2370/12
摘要： A spindle motor which is designed to rotate with minimal vibrations and hence is suitable for a hard disk driver. The spindle motor employs hydrodynamic bearings as radial and thrust bearings. A support shaft is formed in a cylindrical configuration with a center hole, and a rotor has a columnar portion which is inserted into the center hole in the support shaft. A thrust bearing collar is attached to the lower end of the rotor, and a thrust bearing member is secured to a base in opposing relation to the thrust bearing collar. A group of stator coils and a radial bearing member are disposed on either the inner peripheral surface of the center hole in the support shaft or the outer peripheral surface of the support shaft, and a group of rotor magnets and a radial bearing sleeve are disposed on either the outer peripheral surface of the columnar portion or the inner peripheral surface of the rotor in opposing relation to the stator coil group and the radial bearing member.

3. 发明授权

US5142173A Bearing structure 失效
标题翻译：轴承结构
公开(公告)号：US5142173A
公开(公告)日：1992-08-25
申请号：US564313
申请日：1990-08-08
申请人： Daisuke Konno , Sachihiko Miwa , Shunichi Aiyoshizawa , Kazuyuki Kasahara , Yoshio Sato , Kazuto Hirokawa , Yumiko Noda
发明人： Daisuke Konno , Sachihiko Miwa , Shunichi Aiyoshizawa , Kazuyuki Kasahara , Yoshio Sato , Kazuto Hirokawa , Yumiko Noda
IPC分类号： F16C33/10 , F16C39/06 , G11B19/20
CPC分类号： F16C33/107 , F16C17/107 , F16C39/063 , G11B19/2018 , F16C2370/12
摘要： A bearing structure suitable for a spindle motor or the like, which enables such a motor to rotate with minimal vibrations. The bearing structure comprises a stator including a support shaft which is disposed on a base, and a rotor which is rotatably disposed around the support shaft. A radial hydrodynamic bearing and a thrust hydrodynamic bearing are disposed between the stator and the rotor. The stator has the support shaft, a thrust plate and a radial cylindrical member which is concentric with the support shaft. The thrust plate is secured to an end surface of the radial cylindrical member. The support shaft extends through the centers of the radial cylindrical member and the thrust plate. The rotor has a radial sleeve. The radial hydrodynamic bearing is formed from the inner peripheral surface of the radial sleeve and the outer peripheral surface of the radial cylindrical member, which face each other and either of which is formed with herringbone-shaped grooves for generating dynamic pressure. The thrust hydrodynamic bearing is formed from an end surface of the radial sleeve and a sliding surface of the thrust plate, which face each other and either of which is formed with spiral grooves for generating dynamic pressure. A rolling bearing may be added in order to minimize the starting torque in the bearing structure.

4. 发明授权

US4998033A Gas dynamic bearing for spindle motor 失效
标题翻译：主轴电机气动轴承
公开(公告)号：US4998033A
公开(公告)日：1991-03-05
申请号：US506183
申请日：1990-04-09
申请人： Yasushi Hisabe , Noriyuki Osada , Toshihiro Ohtani , Masahiko Kishi , Yoshio Sato , Daisuke Konno , Sachihiko Miwa , Toshiya Kanamori , Shunichi Aiyoshizawa , Kazuyuki Kasahara , Kazuto Hirokawa , Yumiko Noda
发明人： Yasushi Hisabe , Noriyuki Osada , Toshihiro Ohtani , Masahiko Kishi , Yoshio Sato , Daisuke Konno , Sachihiko Miwa , Toshiya Kanamori , Shunichi Aiyoshizawa , Kazuyuki Kasahara , Kazuto Hirokawa , Yumiko Noda
IPC分类号： G11B19/20 , H02K5/16
CPC分类号： F16C17/107 , F16C25/045 , F16C27/08 , G11B19/2009 , H02K5/1677 , F16C2206/40 , F16C2370/12 , F16C27/063
摘要： A spindle motor comprising a stator including a support shaft positioned on a base, a cap-shaped rotor rotatably and concentrically disposed around the support shaft, thrust and radial bearings disposed between the stator and the rotor, a stator coil secured to the stator, and a rotor magnet member secured to the rotor opposing the stator coil. The thrust and radial bearings are hydrodynamic bearings. A movable piece that constitutes a part of the thrust bearing is secured to the lower end of a cylindrical portion of the rotor and extended outwardly or inwardly from the cylindrical portion, or is disposed above the rotor. The stator coil is secured to the outer peripheral portion of the support shaft above or below the radial bearing. The rotor magnet member is securd to the inner peripheral surface or inner top surface of the rotor. Either a radial or axial gap is provided between the stator coil and the rotor magnet member.

5. 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。

6. 发明授权

US5596443A Polygon mirror rotor and polygon mirror scanner motor having such rotor 失效
标题翻译：具有这种转子的多角镜转子和多面镜扫描器电机
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。

7. 发明授权

US5358339A Hydrodynamic fluid bearing with liquid-radial bearing and gas-thrust bearing 失效
标题翻译：具有液体 - 径向轴承和气体推力轴承的流体动力流体轴承
公开(公告)号：US5358339A
公开(公告)日：1994-10-25
申请号：US180467
申请日：1994-01-12
申请人： Daisuke Konno , Yumiko Noda
发明人： Daisuke Konno , Yumiko Noda
IPC分类号： F16C17/10 , F16C17/02 , F16C17/04 , F16C33/10 , F16C32/06 , F16C33/72
CPC分类号： F16C17/045 , F16C17/102 , F16C33/1085
摘要： A bearing device suitable for a spindle motor, which comprises a base, a spindle stood on a central portion of the base, a radial cylindrical member (4) fixed on the spindle, a pair of thrust plates (3) secured to both end surfaces of the radial cylindrical member, and a radial sleeve (6) rotatably supported by the thrust plates (3) and the radial sleeve (6), wherein a radial hydrodynamic bearing is formed by the radial cylindrical member (4) and the radial sleeve (6), thrust hydrodynamic bearings are formed by both end portions of the radial sleeve (6) and the thrust plates (3), a gas is employed as a fluid for generating dynamic pressure in the thrust hydrodynamic bearings, the radial bearing has a minute clearance, a chamfer portion is provided on the outer periphery of each end of the radial cylindrical member (4), and another chamfer portion is provided on the inner periphery of each end of the radial sleeve (6), thereby providing an air gap (13) at each axial end of the radial hydrodynamic bearing, which is surrounded by these chamfer portions and one thrust plate (3), a lubricating liquid is employed as a fluid for generating dynamic pressure in the radial hydrodynamic bearing, small holes (8) for collecting the lubricating liquid are formed in the outer peripheral surface of the radial cylindrical member (4), and lubricating liquid is sealed in the bearing clearance of the radial hydrodynamic bearing by virtue of the presence of the air gaps (13).
摘要翻译：一种适用于主轴电机的轴承装置，其包括基座，位于基座的中心部分上的主轴，固定在心轴上的径向圆柱形构件（4），一对固定在两个端面径向圆柱形构件的径向流体动力轴承和由推力板（3）和径向套筒（6）可旋转地支撑的径向套筒（6），其中径向流体动力轴承由径向圆柱形构件（4）和径向套筒推力流体动力轴承由径向套筒（6）和止推板（3）的两个端部形成，气体被用作在推力流体动力轴承中产生动态压力的流体，径向轴承有一分钟在径向圆柱形构件（4）的每个端部的外周上设置有倒角部分，并且在径向套管（6）的每个端部的内周上设置另一个倒角部分，从而提供气隙（ 13）在径向hy的每个轴向端由这些倒角部和一个止推板（3）围绕的动力轴承，使用润滑液作为在径向流体动力轴承中产生动压的流体，用于收集润滑液的小孔（8）形成在径向圆柱形构件（4）的外圆周表面，并且由于存在气隙（13），润滑液被密封在径向流体动力轴承的轴承间隙中。

8. 发明授权

US4129306A Sealing means for tank mixer 失效
标题翻译：密封装置用于罐式搅拌机
公开(公告)号：US4129306A
公开(公告)日：1978-12-12
申请号：US852495
申请日：1977-11-17
申请人： Daisuke Konno , Tetsuo Tanaka
发明人： Daisuke Konno , Tetsuo Tanaka
IPC分类号： F16C33/74 , B01F15/00 , B65D90/00 , F16J15/00 , F16J15/32 , F16J15/24
CPC分类号： F16J15/32 , B01F15/00922 , B01F7/06 , B65D90/00 , F16J15/002 , F16J15/187
摘要： A sealing means is disclosed which comprises a support member provided with a groove adapted to receive an annular seal therein which mates with the outer spherical surface of a swivel ball of a tank mixer upon installation thereof. The groove is positioned so that it is disposed between the diametrical section of the ball taken substantially parallel to the tank wall and the tank wall and that the internal pressure of the liquid in the tank urges the seal towards the diametrical section of the ball.
摘要翻译：公开了一种密封装置，其包括支撑构件，该支撑构件设置有适于在其中容纳其中的环形密封件的凹槽，其在安装时与槽式混合器的旋转球的外球形表面配合。凹槽被定位成使得其设置在基本上平行于罐壁和罐壁的球的直径部分之间，并且罐中的液体的内部压力朝着球的直径部分推动密封。

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