Patent ID: 7070333

Claim:
A lubrication structure for a rolling bearing, comprising: a lubrication oil hole that radially penetrates through an inner ring of the rolling bearing; an oil accumulating room of which rotational axis is the same as a rotational axis of the rolling bearing and that accumulates lubrication oil by using a centrifugal force thereof, wherein the oil accumulating room forms an annular space that extends in a circumferential direction around a central shaft; a lubrication oil supplying path that communicates with the oil accumulating room and the lubrication oil hole; and a fin member that is installed in the oil accumulating room so only one end portion of the fin member in an axial direction is fixed on an inner surface of the oil accumulating room, and the fin member causes lubrication oil to follow rotation of the oil accumulating room so that lubrication oil is forcibly rotated, wherein an oil supplying pressure generated by the centrifugal force causes the lubrication oil in the oil accumulating room to be supplied to an inside of the rolling bearing via the lubrication oil supplying path and the lubrication oil hole.