Patent ID: 9194422
Filing Date: 2015-11-24
Classification: F16C

Abstract:
1. A foil bearing, comprising: a cylindrical outer member; a shaft inserted on an inner periphery of the cylindrical outer member; and a plurality of leaves arranged at a plurality of positions in a circumferential direction between an inner peripheral surface of the cylindrical outer member and an outer peripheral surface of the shaft, the plurality of leaves each comprising a front end and a rear end that are spaced apart from each other in the circumferential direction, the front end serving as a free end, wherein a region comprising the front end of each of the plurality of leaves serves as a top foil portion that has a bearing surface, wherein a region comprising the rear end of each of the plurality of leaves serves as a back foil portion that supports, from behind, the top foil portion of an adjacent one of the plurality of leaves, wherein relative rotation of the shaft and the cylindrical outer member is supported by a fluid film formed in a radial bearing gap facing the bearing surface, and wherein both of the front end and the rear end of each of the plurality of leaves are inclined with respect to an axial direction.