Patent ID: 8899934

Claim:
A rotor structure, comprising: a rotation shaft body in which a blade groove is formed at an outer circumference part rotating around an axis line, and extends in a circumferential direction of the axis line, and a width dimension of a groove opening side of the blade groove is set to be smaller than a width dimension of a groove bottom side of the blade groove; and a plurality of blade bodies which are arrayed in the circumferential direction at the outer circumference part of the rotation shaft body and have blade basements of which is fitted into the blade groove respectively; wherein a blade fixing piece is installed so as to be a positioned between at least one set of adjacent two blade bodies in the circumferential direction inside the blade groove, one of an opening wall part of the groove opening side of the blade groove and the blade fixing piece is provided with a projected part, and the other of them is provided with a recessed part which is fitted into the projected part, the blade fixing piece is provided with a screw member as the projected part which projects in the radial direction of the axis line at least one side in the width direction of the blade groove, and the opening wall part of the blade groove is provided with a notch as the recessed part which extends in the radial direction at least one side in the width direction of the blade groove.