BEARING STRUCTURE AND SUPERCHARGER

摘要

A bearing structure S is provided with: a bearing housing 2 (a housing); a bearing hole 2b that is formed in the housing and that is provided with a semi-floating bearing 7 (a bearing) for axially supporting a shaft 8 having an impeller provided to one end thereof; an escape groove 23 that is formed on the inner circumferential surface of the bearing hole and that communicates with a passage Sb provided below the shaft; and an inclined section 23a formed at least on the inner wall surface of the escape groove positioned above the shaft.