公开(公告)号：US5810481A

公开(公告)日：1998-09-22

申请号：US852246

申请日：1997-05-06

申请人： Katsutoshi Nii ,  Makoto Kondoh ,  Takashi Kono ,  Yoshihiro Sato ,  Seiichiro Terashima

发明人： Katsutoshi Nii ,  Makoto Kondoh ,  Takashi Kono ,  Yoshihiro Sato ,  Seiichiro Terashima

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

CPC分类号： F16C17/10 ,  F16C33/103 ,  G11B19/2009 ,  F16C2370/12

摘要： Oil retaining bearing members 2a and 2b for supporting a rotative shaft 1 are arranged in a bearing housing 7 with an interval. The bearing housing 7 has a bottom portion, one end being opened and another end being closed. A porous spacer 3 for supplying a lubrication oil is closely inserted between the oil retaining bearings 2a and 2b. An oil thrower 8 is arranged at an upper portion of the bearing housing 7 and a thrust bearing 5 is arranged at a lower portion. The open end of the bearing housing 7 is arranged on the upper portion and the another end of the bearing housing 7 is arranged on the lower portion of the bearing housing 7, and state a lubrication oil 4a is enclosed in the housing to immerse a part of the porous spacer 3 to some degree. The pore diameter of the porous spacer 3 is larger than that of the oil retaining bearings 2a and 2b. By utilizing capillary tube action in by the porous spacer 3, the lubrication oil 4a is supplied to the oil retaining bearing 2a. Accordingly, an oil retaining bearing unit having an excellent performance and a superior mass productivity and a motor having a long service life and a high reliability using the oil retaining bearing unit can be provided.

摘要翻译： 用于支撑旋转轴1的止油轴承构件2a和2b以间隔布置在轴承壳体7中。 轴承壳体7具有底部，一端打开，另一端封闭。 用于供给润滑油的多孔隔离物3紧密地插入在保油轴承2a和2b之间。 在轴承壳体7的上部配置有排油装置8，在下部配置止推轴承5。 轴承壳体7的开口端设置在上部，轴承壳体7的另一端设置在轴承壳体7的下部，并且将润滑油4a封闭在壳体中以将部件 多孔隔离物3的一部分。 多孔隔离物3的孔径大于油保持轴承2a和2b的孔径。 通过利用毛细管作用于多孔隔离物3，将润滑油4a供给至保油轴承2a。 因此，可以提供具有优异的性能和优异的质量生产率的油保持轴承单元和具有使用寿命长并且使用油保持轴承单元的高可靠性的电动机。