| 摘要 |
PURPOSE:To prevent the dislocation of a head movable part due to the heat to occur by the above-mentioned coil and to position at high speed and with high precision by interleaving a heat insulator to the joining area of the coil for driving and a movable part. CONSTITUTION:On a coil 40 for driving to move the movable part of an optical head in a track direction, a spring material 8, for which the plane is approximately circular, is mounted and fixed through an annular fitting member 81. At the member 81, the heat insulator of the same shape as the member 81 is bonded. It is preferable to form the heat insulator with the material of the approximately same thermal expansion coefficient as the coil 40. A heat insulator 82 is interleaved between the coil 40 and a linear bearing 52. |
