| 摘要 |
An edge damper frame 18 b is disposed in between a part of an outer peripheral surface 20 a of a frame-cover 20 and a leveling surface 14 c- 1 of a frame 14 . A slope 18 e of a diaphragm 15 is extended from the edge damper frame 18 b toward the frame 14 and provided alongside an outer side surface 14 c- 2 of a convex portion 14 c of the frame 14.
|
