| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydrodynamic bearing with a structure capable of stably supplying a volume of fluid to be poured in a hydrodynamic space, and easily controlling a surface of the fluid to be poured. SOLUTION: This hydrodynamic bearing comprises a rotary member, an annular stationary member fastened to a side of the rotary member, an annular housing having a hollow for housing the stationary member and a cover covering a top of the stationary member, a supporting member fastened to a bottom end of the hollow of the housing and supporting a bottom of the rotary member, and a spacer interposed between the top and the cover of the stationary member and forming a fluid storage space of a cross section shape with a taper between it and the cover. The rotary member is supported by a hydrodynamic action of the fluid in the hydrodynamic space in a non-contact manner, and a fluid reserving space connecting the fluid storage space and the hydrodynamic space via the bottom of the stationary member is further provided on one side of the stationary member. The fluid reserving space functions as an additional fluid storage space. COPYRIGHT: (C)2008,JPO&INPIT
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