| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce contact load generated between an inner peripheral surface of a drive ring and an outer peripheral surface when the drive ring is turned to vary a nozzle wing angle, to reduce an abrasion amount and drive force by smoothly turing the drive ring, and to further reduce risk of a damage by reducing impact force generated on the drive ring in application of external force such as vibration of an engine. <P>SOLUTION: A plurality of notch parts 19 are provided on an inner peripheral edge part of the drive ring 14 along a circumferential direction, and is formed such that inner diameters of the inner peripheral surfaces 14e, 14f, 14g, 14h in which the contact load with an outer peripheral surface of a mount becomes large when the drive force for turning the drive ring 14 is inputted out of the inner peripheral surfaces 14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h positioned between the notch part 19 and the notch part 19 become larger than an outer diameter of the outer peripheral surface. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
