| 摘要 |
PURPOSE:To decrease slide strokes by allowing a shield number of an opening inserting a head to be slid to the left and right from the center of the opening to apply opening and closing thereby increasing the size of the opening. CONSTITUTION:The shield members 1, 2 are brought into contact with each other and stopped while a slide member 3, a slide operating member 4, the shield members 1, 2 and a pinion gear 5 are slid on rotated in a direction opposite to the arrows C, A, D, E, B respectively by energyzing a spring member 6 normally. In loading a cartridge to a driver, the member of the driver side slides the member 4 toward the arrow A and a rack 4a and the gear 5 slide the member 3 toward the arrow C. thus, the member 2 engaged with the member 4 is slid in the direction of arrow E, the member 1 engaged with the member 3 is slid toward the arrow D and the members 1 and 2 are parted. The structure is simplified in this way and the driver is miniaturized.
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