| 摘要 |
<p>PURPOSE:To move forth a head and bring it into press contact only when the loading of a cassette is completed by associating an eject lever with a switch plate, and turning on a switch only when the forward movement of the eject lever is completed. CONSTITUTION:An L-shaped link 4 supported pivotally on a supporting shaft 6 engages the pin 3 of a guide arm 1 which moves up and down a pack guide, and the supporting shaft 6 is provided with the switch plate 12 coaxially. When the cassette is inserted into the pack guide, the eject lever 16 is drawn by a spring 18 to rotate the link 4 clockwise, and the lock part 20 of the lever 16 presses the a switch plate 12 to operate a switch 13 by a presser part 12a, moving forth the head. If the pack guide is not moved down completely and the lever 16 moves forth insufficiently, the switch 13 is not turned on, so the head does not move forth. Consequently, the head is moved forth only when the loading of the cassette is completed.</p> |
