| 摘要 |
PROBLEM TO BE SOLVED: To provide a seal mechanism suppressed in increase of local surface pressure by a detent member even when a member provided with a seal member is rotated and operated.SOLUTION: In a seal mechanism including annular grooves 110 respectively formed on opposed faces between members 11 disposed at an interval, in opposition to each other, and an annular seal member 200 inserted to the annular grooves 110, the seal member 200 is annularly configured by arranging a plurality of seal plate assemblies 210 respectively composed of an arc-shaped outer periphery-side seal plate piece 230 and an arc-shaped inner periphery-side seal plate piece 220 kept into contact with an inner peripheral face of the outer periphery-side seal plate piece 230 with its outer peripheral face and shifted in phase in the circumferential direction, along the circumferential direction, an outer periphery-side seal engagement projection 231 is formed on an outer peripheral face of the outer periphery-side seal plate piece 230, an engagement hole 131 is formed on an inner peripheral face of an outer periphery-side ring portion 130 configuring an outer peripheral side of the annular groove 110, and the outer periphery-side seal engagement projection 231 is engaged with the engagement hole 131. |
