| 摘要 |
PURPOSE:To moderate stress concentrated to a joint portion between a rotor body and each of end plates and prevent sealing properties from being deteriorated by forming a peripheral surface of each of the end plates mounted on both ends of the rotor body by forcing or fitting into a convex surface changing circular arc-shaped along the axial direction of the rotor body. CONSTITUTION:A peripheral surface of an end plate 11 is formed into a convex surface X changing arc-shaped along the axial direction of a rotor body. A radius R of curvature of the convex surface X is set to be larger than the thicknesses t of positioning rings 4a, 4b in the radial direction thereof. The end plate 11 is such forced into the rotor body 1 that the convex surface X makes contact with the inner peripheral surface of the rotor body 1 and with the end surfaces of the positioning rings 4a, 4b for limiting the axial position of the end plate 11. A space P surrounded by the end plate 11 peripheral surface, rotor body 1 inner surface, and the positioning rings 4a, 4b are filled with a sealing agent. |
