| 摘要 |
<p>PURPOSE:To securely and highly precisely detect an automatic tape selector and a miserasure preventing function and to reduce the recorder in weight and thickness by providing a detecting switch mechanism capable of opening and closing a 1st terminal and a 2nd terminal in response to the state of a back part of a cassette tape. CONSTITUTION:A tip inclined part 16a of a 1st detecting lever 16 is pushed by a lower peripheral part of the back part of the cassette tape 19, and moreover a movable terminal 18A is pressed by an engaging part 16b to be abutted against a fixed terminal 15A. Then, a 2nd detecting lever 17 is turned in the direction of C1, and a movable terminal 18B is pressed by an engaging part 17a to be opposite to a hole position of a miserasure preventing claw 19a to the tape 19. Now, when the miserasure preventing claw 19a is not present, the lever 17 is turned by energizing force of the movable terminal 18B, and a fixed terminal 15B and the movable terminal 18B are turned into the opening state. Similarly, this is utilized for detecting the chrome/normal of the tape 19 as well. Thus, the recorder can easily be reduced in its weight and thickness.</p> |
