| 摘要 |
PURPOSE:To allow the titled device to absorb a heat displacement difference and resist an impulse sufficiently by fixing only one end of a york for a voice coil motor firmly on a subbase and supporting the other end by a flexible member such as a sheet metal. CONSTITUTION:One end of the york 7 is fixed on the subbase 5 through a pin screw 9. Since the pin screw 9 has a parallel diameter part for positioning and holes matched with said parallel diameter part are drilled into the subbase 5 and the york 7 to fit precisely. The other end of the york 7 is supported by an L- shaped sheet metal. Since the sheet metal is made of the same material as that of the subbase 5 and fitting spans E1, E2 are made the same size, the heat displacement difference between upward and downward directions can be eliminated. The L-shaped sheet metal is thinned in a horizontal direction, to absorb the heat displacement difference by the deflection of the sheet metal. In said constitution, the device can absorb the heat displacement difference and resist the impulse sufficiently. |
