公开(公告)号：US5628569A

公开(公告)日：1997-05-13

申请号：US324985

申请日：1994-10-18

申请人： Masamichi Hayakawa ,  Masato Gomyo ,  Toshihiko Miyakoshi ,  Arihiro Yonezawa

发明人： Masamichi Hayakawa ,  Masato Gomyo ,  Toshihiko Miyakoshi ,  Arihiro Yonezawa

IPC分类号： F16C17/22 ,  F16C33/10 ,  G11B19/20 ,  F16C32/06 ,  F16C33/82

CPC分类号： G11B19/2009 ,  F16C17/102 ,  F16C17/22 ,  F16C33/107 ,  F16C33/746 ,  F16C2370/12

摘要： A fluid bearing unit includes a shaft; a bearing; bearing fluid arranged between a shaft and a bearing which are rotatably engaged with each other so that they can be relatively rotated so as to generate dynamic pressure in the bearing fluid, wherein at least one of the bearing and the member for fixing the bearing unit is made of iron alloy having the volumetric magnetostriction of which acts to cancel the thermal expansion so as to become the coefficient of linear expansion thereof lower than that of the shaft.

摘要翻译： 流体轴承单元包括轴; 轴承 轴承流体布置在轴和轴承之间，其可旋转地彼此接合，使得它们可以相对旋转，以便在轴承流体中产生动压，其中轴承和用于固定轴承单元的构件中的至少一个是 由铁合金制成，其体积磁致伸缩力起到抵消热膨胀的作用，使得其线性膨胀系数低于轴的线膨胀系数。

公开(公告)号：US5675199A

公开(公告)日：1997-10-07

申请号：US442321

申请日：1995-05-16

申请人： Toshihiko Miyakoshi ,  Arihiro Yonezawa ,  Tamotsu Nose

发明人： Toshihiko Miyakoshi ,  Arihiro Yonezawa ,  Tamotsu Nose

IPC分类号： F16J15/43 ,  H02K5/124 ,  H02K5/16 ,  H02K7/08

CPC分类号： F16J15/43 ,  H02K5/124

摘要： A bearing device with a primary and secondary magnetic fluid seal for use in a motor. A shaft and a frame in the motor are interconnected by a bearing. A magnetic fluid is placed in a region between the shaft and frame. The primary magnetic fluid seal is positioned above the bearing and the secondary magnetic fluid seal is positioned above the primary magnetic fluid seal to form a two-layered seal.

摘要翻译： 具有用于电动机的初级和次级磁性流体密封件的轴承装置。 马达中的轴和框架通过轴承互连。 磁性流体被放置在轴和框架之间的区域中。 主磁流体密封件位于轴承上方，次级磁性流体密封件位于主磁性流体密封件上方以形成双层密封。