公开(公告)号：WO0045498A9

公开(公告)日：2001-10-11

申请号：PCT/US0002402

申请日：2000-01-27

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： NOTTINGHAM ROBERT A ,  LEBLANC JEFFRY A

IPC: F16J15/43 ,  G11B19/20 ,  H02K5/00 ,  H02K5/10 ,  H02K5/124 ,  H02K15/14

CPC classification number: G11B19/2009 ,  F16C33/765 ,  F16C2370/12 ,  H02K5/124 ,  H02K15/14

Abstract: In a motor having a fixed shaft and a ball bearing with inner and outer races mounted near one end of the shaft, a magnetic seal is provided which is supported from a seal support which is integrated with or adhesively attached to the back iron which rotates with the hub, the seal magnetic pole pieces extending around the shaft and holding ferrofluid between the ends of the pole pieces extending around the shaft and holding ferrofluid between the ends of the pole pieces and the shaft. A vacuum press holds the shield piece and heats the shield to a temperature so that the inner radius of the washer-shaped seal piece is larger than the outer diameter of the shaft. The press then lowers the shield over the outside diameter of the shaft; the shield is positioned by providing a positioning surface on the vacuum press which butts against the end of the shaft, with the vacuum holding portion of the press extending lower than this alignment surface to place the shield on the outside of the shaft. As the shield cools, it presses against the outside surface of the shaft and is fixed in place. The seal support includes a catcher recess which faces the shaft and is in a position to catch any stray metal particles.

Abstract translation: 在具有固定轴的电动机和具有安装在轴的一端附近的内圈和外圈的滚珠轴承的情况下，提供磁密封件，该密封件由密封支撑件支撑，所述密封件与所述后铁一体化或粘合地附接到后铁上， 轮毂，密封磁极片围绕轴延伸并且将铁磁流体保持在围绕轴延伸的极片的端部之间并且将铁磁流体保持在极片的端部和轴之间。 真空压机保持屏蔽件并将屏蔽件加热至使得垫圈形密封件的内半径大于轴的外径的温度。 然后压机将屏蔽件降低在轴的外径上; 通过在真空压机上设置定位表面来定位屏蔽件，该定位表面抵靠轴的端部，其中压力机的真空保持部分比该对准表面低，以将屏蔽件放置在轴的外侧。 当屏蔽冷却时，它压靠轴的外表面并固定就位。 密封支撑件包括面向轴并且能够捕获任何杂散金属颗粒的捕获器凹部。

公开(公告)号：WO2012154410A3

公开(公告)日：2013-01-24

申请号：PCT/US2012035002

申请日：2012-04-25

Applicant: SEAGATE TECHNOLOGY LLC ,  PARSONEAULT NORBERT STEVEN ,  HERNDON TROY MICHAEL ,  GREDINBERG ALEXANDER ,  NOTTINGHAM ROBERT A

Inventor： PARSONEAULT NORBERT STEVEN ,  HERNDON TROY MICHAEL ,  GREDINBERG ALEXANDER ,  NOTTINGHAM ROBERT A

IPC: G11B19/20 ,  F16C33/10 ,  H02K5/173

CPC classification number: F16C17/243 ,  F16C17/10 ,  F16C33/1085 ,  F16C2240/40 ,  F16C2240/46 ,  F16C2370/12 ,  G11B19/2036

Abstract: A fluid bearing motor. The fluid bearing motor includes a stationary sleeve, a backiron, a hub coupled to the backiron, and a gap forming component. The hub is operable to rotate with respect to the stationary sleeve. The gap forming component is attached to the stationary sleeve and forms a gap between the stationary sleeve and the backiron. The size of the gap dynamically changes in response to changes in temperature.

Abstract translation: 流体轴承电机。 流体轴承电动机包括固定套筒，背铁圈，联接到后铁的轮毂和间隙形成部件。 轮毂可操作以相对于固定套筒旋转。 间隙形成部件附接到静止套筒并在固定套筒和后铁之间形成间隙。 间隙的大小根据温度的变化动态变化。