| 摘要 |
PURPOSE:To prevent peeling in adhesion area and to improve reliability by allowing the flange of a center part to receive the attractive force by a magnet clump and to act to press the adhesion area. CONSTITUTION:Metal parts 15 which a magnet attracts are provided on the opposite side of the center part 11 to the flange, in a same intervals concentrical with the reference hole 14 of the center part. Through holes 16 are provided into which the metal parts are loosely fitted, and the center parts 11 to the double-face disk can be attached and adhered by linking the respective metal parts 15 and through holes 16. Namely, the attractive force of the magnet is always applied on the flange and works to press the adhesion area. Thereby, the center parts 11 are prevented from peeling. |
