| 摘要 |
<p>PURPOSE:To improve accuracy and reliability and to save a space by interposing an elastic member between a movable part and a fixed part and moving only the movable part against the pressing force of the elastic member when a large cassette half is inserted. CONSTITUTION:The switch is the one to detect detecting holes 8a and 9a for erroneous erasure detection and cassette class judgement provided at the cassette halves 8 and 9, and it is formed in two piece constitution of the movable part 15 and the fixed part 17, and the elastic member 16 is interposed between the movable part 15 and the fixed part 17. When the large cassette half 8 is inserted, an apex part 15b is pressed with the cassette half 8, and the movable part 15 is moved downward along the inner peripheral side wall of the fixed part 17 against the pressing force of the spring 16, and the cassette half 8 continues to move to a position where the detecting hole 8a can be detected. Thereby, the accuracy and the reliability can be improved, and also, the space can be saved.</p> |
