JPS54128712A - Magnetic recording and reproducing apparatus - Google Patents

Abstract

PURPOSE: To promptly stop a tape automatically at the trailing end thereof under a reproduced or cue-held condition by providing an automatic lock releasing mechanism which is made operative to detect that the rotations of a reel shaft is stopped thereby to automatically release only the locked condition of a rewinding rod.

CONSTITUTION: When a tape is taken up to the side of a feed reel shaft 5 until the trailing end thereof, a gear 114 is stopped whereas a gear 111 is turned. In accord- ance with the rotations of the gear 111, the rotation center axis 107 of the gear 114 is shifted so that an arm 106 is turned clockwise about the shaft 105 of a rewinding rod 15a. The clockwise rotations of the arm 106 moves a second lock releasing lever 130 in the direction of arrow A through the projection 132 and shaft 131 thereof. In accordance with the movement of the second lever 130 in the direction of arrow A, along the slope 133 thereof, the projection 36 of a lock plate 21 is shifted in the direction of arrow C, and a rewinding button 15 is released from its locked condition by the movement of the lock plate 21 in the direction of arrow C so that the button restores its initial position with the aid of a spring force until it is brought into its stopped condition.

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