| 摘要 |
PROBLEM TO BE SOLVED: To reduce manufacturing cost for a sealing member of this kind of fluid bearing device and easily remove burrs to be produced in injection molding of the sealing member. SOLUTION: The sealing member 9 is injection molded of a resin composition using a liquid crystal polymer LCP as a base resin. The sealing member 9 is fixed to the inner periphery of an opening portion 7c of a housing 7 via a fixed face 9d to form the fluid bearing device 1. In this state, a seal space S is formed between a taper face 9a formed on the inner periphery of the sealing member 9 and an outer peripheral face 2a1 of a shaft portion 2a. A circular chamfered portion 9e formed by removing work for a gate trace 9g appears at the outer peripheral corner of an upper side end face 9c, and a polished face 9f formed by polishing a region including the burrs C produced at the outer diameter side end of the chamfered portion 9e with inorganic fibers appears between the chamfered portion 9e and the fixed face 9d. COPYRIGHT: (C)2006,JPO&NCIPI
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