公开(公告)号：US5876124A

公开(公告)日：1999-03-02

申请号：US638025

申请日：1996-04-26

申请人： Yan Zang ,  Michael R. Hatch ,  Shinichi Minakuchi

发明人： Yan Zang ,  Michael R. Hatch ,  Shinichi Minakuchi

IPC分类号： F16C17/10 ,  F16C33/10 ,  F16C33/74 ,  G11B19/20

CPC分类号： F16C33/103 ,  F16C33/745 ,  G11B19/2009 ,  F16C2370/12

摘要： A self-contained hydrodynamic bearing unit with improved sealing and performance is disclosed. Centrifugal capillary seals are angularly defined between an outwardly tapered outer surface of a top screw and an inwardly tapered inner surface of an annular clamp ring at the top of the bearing unit as well as between an outwardly tapered outer surface of a seal plate and an inwardly tapered inner surface of an annular clamp ring at the bottom of the bearing unit. During operation, bearing lubricant is pumped away from the seal opening and toward the bearings by centrifugal force at the seals, providing dynamic sealing. When the bearing unit is not rotating, capillary forces retain the lubricant within the seal, preventing the lubricant from leaking. The tapered configuration of the seals also shortens the vertical seal length for a given effective seal length, thereby maximizing the journal bearing length/span and improving dynamic performance of the bearing unit.

摘要翻译： 公开了具有改进的密封和性能的独立的流体动力轴承单元。 离心毛细管密封件在顶部螺钉的向外锥形外表面和位于轴承单元顶部的环形夹紧环的向内锥形内表面之间以及在密封板的向外锥形外表面和内侧 位于轴承单元底部的环形夹紧环的锥形内表面。 在运行过程中，轴承润滑剂通过离心力在密封件处从密封开口向轴承泵送，从而提供动态密封。 当轴承单元不旋转时，毛细作用力将润滑剂保持在密封内，防止润滑剂泄漏。 对于给定的有效密封长度，密封件的锥形构造也缩短了垂直密封长度，从而使轴颈轴承长度/跨度最大化并提高了轴承单元的动态性能。

公开(公告)号：US5357163A

公开(公告)日：1994-10-18

申请号：US57388

申请日：1993-05-06

申请人： Shinichi Minakuchi ,  Nobuhiro Yoshino

发明人： Shinichi Minakuchi ,  Nobuhiro Yoshino

IPC分类号： F16C17/10 ,  F16C33/10 ,  H02K5/16 ,  H02K21/22 ,  H02K7/08

CPC分类号： F16C17/107 ,  F16C17/026 ,  F16C17/045 ,  F16C33/107 ,  H02K21/22 ,  H02K5/1675

摘要： A motor having a dynamic-pressure type bearing device includes a cylindrical sleeve fixedly secured to a base, a shaft rotatably inserted into a hollow of the cylindrical sleeve, a hub fixedly secured to an end portion of the shaft, a ring-like rotor magnet fixedly secured to the hub, and an armature fixedly secured onto the base to be in opposed relation to the rotor magnet so as to constitute a motor driving device. Further, the motor has a disc-like plate coaxially and fixedly secured to an end portion of the shaft to have a diameter of the disc-like plate greater than a diameter of the shaft and a plate disposed in opposed relation to a surface of the disc-like plate. The bearing device includes a radial dynamic-pressure groove assembly having a predetermined groove configuration to generate a radial dynamic pressure in a radial direction of the shaft and an axial dynamic-pressure groove assembly having a predetermined groove configuration to generate an axial dynamic pressure in an axial direction of the shaft. The radial dynamic-pressure groove assembly is formed in at least one of an outer circumferential surface of the shaft and an inner surface of the cylindrical sleeve which face each other and the axial dynamic-pressure groove assembly is formed in at least one of the surface of the disc-like plate and a surface of the plate disposed in opposed relation to the surface of the disc-like plate.

摘要翻译： 具有动压式轴承装置的电动机包括：固定地固定在基座上的圆柱形套筒，可旋转地插入圆柱形套筒中空的轴;固定在轴端部的轮毂;环状转子磁体 固定地固定到轮毂，以及固定在基座上以与转子磁体相对的电枢，以构成电动机驱动装置。 此外，电动机具有同轴并且固定地固定到轴的端部的盘状板，以使得盘状板的直径大于轴的直径，并且与所述轴的表面相对设置的板 盘状板 轴承装置包括径向动压槽组件，其具有预定的凹槽构造以在轴的径向方向上产生径向动态压力;以及轴向动压槽组件，其具有预定的凹槽构造，以产生轴向动压 轴的轴向。 径向动压槽组件形成在轴的外圆周表面和彼此面对的圆柱形套筒的内表面中的至少一个中，并且轴向动压槽组件形成在至少一个表面 的板状板和与盘状板的表面相对设置的板的表面。