| 摘要 |
<P>PROBLEM TO BE SOLVED: To surely form a communication path of lubrication fluid in an integrally-molded product while keeping production costs low in a fluid bearing device having a part formed by integrally molding a housing and a bearing sleeve. Ž<P>SOLUTION: A housing part 7 and a bearing part 8 constituting a dynamic pressure bearing device 1 are integrally molded by the injection molding of a resin. Thereafter, a through-hole 11 is formed in the integrally-molded product (die molded member 6) by laser beam processing. Thus, a flow passage connecting an upper end to a lower end of a radial bearing gap opened on an upper end face 8c and a lower end face 8b of a bearing part 8 and formed between the bearing part 8 and a shaft part 2 is formed by the through-hole 11. In this process, the inner peripheral surface of the through-hole 11 is formed by a laser beam-processed surface. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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