| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce raw material costs of a ring support structure 107, i.e., raw material costs of a variable nozzle unit 41.SOLUTION: A ring support structure 107 is constituted by a nozzle ring 49 as a base member, plural guide pins 67 as first side face guide members, a guide ring 73 as a peripheral guide member, and a guide stopper 93 as a second side face guide member. The guide ring 73 is made of a raw material with the same thickness dimension as that of a raw material of a movable ring 77. An annular recess stage part 109 for securing a rightward and leftward sliding clearance of the movable ring 77 is formed at an outer peripheral edge including a portion in slide contact with the movable ring 77 on a right side face of each guide pin 67.</p> |
