FLUID BEARING DEVICE AND METHOD OF MANUFACTURING SAME

摘要

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 (molded member (6)) by laser beam processing, whereby a flow passage which opens to the upper end surface (8c) and the lower end surface (8b) of the bearing part (8) and connects the upper end and the lower end of the radial bearing gap 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.