Damper bearing and damper

Abstract

A damper bearing includes: a bearing portion that supports a rotary shaft; and a tubular portion located around an outer circumference of the bearing portion, the tubular portion having a predetermined radial thickness and having an outer surface attachable to a structural member, wherein the bearing portion is configured as a hydrostatic bearing that supports the rotary shaft with a predetermined bearing clearance between the hydrostatic bearing and the rotary shaft, the tubular portion includes a plurality of planar slits located between the outer surface of the tubular portion and an inner surface of the tubular portion, each planar slit having a predetermined width, extending circumferentially, and further extending through an entire axial length of the tubular portion, the planar slits are arranged circumferentially at predetermined intervals in the tubular portion, each planar slit has an open end at the outer surface of the tubular portion, extends radially from the open end, and extends circumferentially in an arc to a predetermined point in a region between the outer surface and the inner surface, and the tubular portion includes a bearing fluid supply hole formed in a region where none of the planar slits is situated, the bearing fluid supply hole extending from the outer surface of the tubular portion to the bearing portion without passing through any of the planar slits. The damper bearing thus configured can be used as a bearing for a small machine and exhibit a damper function to damp vibration transmitted from the rotary shaft of the machine.

Dependencies are inferred from the claim text.