| 摘要 |
<p>PURPOSE:To relax impulse when a cassette holder is completely raised by engaging a loading mechanism to a lifting mechanism only when any cassette is not inserted to the cassette holder, and preventing the engagement when the cassette is inserted to the cassette holder. CONSTITUTION:When a cassette holder 2 is raised by the tensile force of a spring 5 from a falling state without inserting any cassette to the cassette holder 2, a pin 4b is moved in a B direction in a guide groove 2b and a second arm 4 is rotated in a clock-wise direction. Then, the cassette holder 2 starts raising. In the middle of this raising, the pin 4b is abutted to a lever 6 and this lever 6 is rotated in the clock-wise direction so as to stretch a spring 8. Therefore, since load to be applied through the lever 6 to the second arm 4 is increased, the force of the spring 5 for raising the cassette holder 2 is weakened. Thus, when the cassette holder is completely raised, the impulse is relaxed.</p> |
