Abstract: A mode changing over mechanism for a tape player which can change over the mode of operation of the tape recorder with a simple structure and can be constructed in a small size and thickness at a low cost. The mechanism comprises a direction slider movable among normal and reverse mode positions and a stopping position, a trigger member having an engaging portion movable between arresting and non-arresting positions, and a rotatable cam gear having a cam section having normal and reverse mode pressing faces for pressing a control portion of the direction slider in the opposite directions. When the engaging portion is at the arresting position, the cam gear is inhibited from rotating at a position when a play mode or a stop mode is established.

Abstract: A cam gear controlling mechanism is simple in structure, small in overall size and high in reliability of operation. The controlling mechanism comprises a cam gear having toothed and non-toothed portions and a cam groove, a trigger lever having a projection fitted in the cam groove and movable between arresting and non-arresting positions, a spring biasing the trigger lever to the non-arresting position, and electromagnetic means for releasably holding the trigger lever at the arresting position. When the cam gear is engaged with a driving gear, it is rotated in one direction by the latter, but when the driving gear is opposed to the non-toothed portion, a stopper projection on the cam gear is abutted with the engaging projection to lock the cam gear there.

Abstract: The present invention resides in a rotation detecting mechanism for a tape recorder including a movable shut-off lever for setting at least a reproducing lever or a head base at a stop state position, with the reproducing lever or the head base being previously set to the reproducing state position, a movable changeover lever for interchangeably setting the normal reproducing direction or the reverse reproducing direction of a magnetic tape, a switching device for selectively shifting and setting the shut-off lever or the changeover lever, a movable trigger lever for selectively triggering the switching device a detecting lever rotationally biased in a direction which is in accordance with the rotation and the rotational direction of a reel block, and a cam gear rotated perpetually in one direction including in turn a first cam surface guiding one end of the detecting lever when the detecting lever is rotationally biased in one direction, a second cam surface guiding one end of the detecting lever when the de

Abstract: A cassette type recording and/or reproducing apparatus having a chassis in which a cassette is mounted on an upper surface thereof. An upper surface of the chassis is formed with a recess in whcih a pair of reels and a gear machanism including a plurality of gears to actuate the pair of reels to rotate are mounted from an above direction, thus reducing a height dimension of the entire apparatus and achieving an easy assembly operation with fewer parts and less labor time for the assembly of the apparatus.

Abstract: In a mode-change mechanism for a tape recorder, a driving bar is mounted for movement between a record/playback mode position and a stop mode position, a partially toothless gear has a cam thereon engageable by a cam follower on the driving bar for moving the latter between its mode selecting positions in response to turning of the partially toothless gear between immobile positions thereof in which opposed first and second toothless portions on the outer periphery respectively face a driving gear for intermittently rotating the partially toothless gear, a lock lever is selectively engageable with one of a pair of stop elements on the partially toothless gear for halting rotation of the latter in a respective one of the immobile positions thereof, and a spring urges the driving bar toward one of its mode selecting positions, with the cam, toothless portions and stop elements on the partially toothless gear being angularly positioned in respect to each other so that, when the lock lever is disengaged from one

Abstract: In an auto-reverse type tape recorder also capable of repeatedly playing a tape in both directions, the tape travel is not shut off when the mode of operation is manually changed over from the normal run mode to the reverse run mode, or vice-versa, and after a changeover to the record mode, manual changeover operation is locked-out or made impossible in order to prevent the travel of the tape from being inadvertently changed over and, further, the travel of the tape is stopped without fail at the end of either the normal run mode or the reverse run mode.