Abstract: A cassette holder mechanism in a tape player includes an elongated hole formed in a cassette holder and engaging a pin extending from a guide arm so as to allow a limited relative movement of the cassette holder with respect to the guide arm, and includes a positioning spring for urging the cassette holder downwardly so that cassette in the cassette holder is reliably set at a predetermined position in a horizontal configuration.

Abstract: A tape loading mechanism for use in a magnetic recording and reproducing apparatus including a rotary head comprises: a transmission gear assembly engaging a drive gear rotated by a loading motor; loading gears located at opposite sides of the rotary head one of which is directly connected to the transmission gear assembly whereas the other is connected same via a connection gear assembly; a pair of loading arms responsive to the loading gears to move a pair of loading blocks back and forth; and a pinch roller arm connected to one of the transmission gear assembly, loading gears and connection gear assembly to move a pinch roller back and forth.

Abstract: A dustproof door mechanism includes a dustproof door pivotably supported by a shaft and normally biased by a spring to its closed position, a door opening cam integrally formed with a loading gear rotatable in opposite directions to drive a cassette loading mechanism, and a door opening link engaging the dustproof door and pivoted by the door opening cam in a direction for opening the door.

Abstract: A pinch roller driving mechanism used in a magnetic recording and reproducing apparatus including a rotary head comprises: a pinch roller arm driving member provided on a pinch roller pull-out gear to rotate in the same direction as the gear; a pivotable pinch roller arm connected to the pinch roller arm driving member; and a pinch roller link having one end pivotably linked to one end of the pinch roller arm and the other end pivotably linked to a pinch roller block which supports a pinch roller and moves along a guide groove to bring the pinch roller into close contact with a capstan shaft.

Abstract: An R-DAT cassette loading mechanism comprises a reversible motor; a rotary member drivingly connected to the motor and having a driving pin formed at a central position of its lateral surface; a loading plate having first and second cam portions and pulled by the driving pin to reciprocally slide on a straight line; a guide link pivotably supported on a fixed member and rotated vertically by the first cam portion; a cassette holder pivotably supported on a free end portion of the guide link; a cassette guide having a contact portion accepting a front end portion of a cassette and slidably movable between a cassette sucking position and a cassette ejecting position; and a loading link pivotably supported on a fixed member and rotated on a horizontal plane by the second cam portion to slidably move the cassette guide.

Abstract: A pinch roller driving mechanism includes a second cam gear linked with a first cam gear which drives a loading block, and a pinch roller is driven by a pinch roller driving arm engaged with a grooved cam of the second cam gear.Owing to this construction, the timing of movement of the pinch roller can be deviated from that of the loading block, so that the path of movement of the pinch roller can be superposed on the path of movement of the loading blocks, what can make the construction smaller.

Abstract: An intermittent gear mechanism includes two intermittent gears mounted at opposite sides of a driving gear driven by a motor. One of the intermittent gears is normally held by a holding member at a position disengaged from the driving gear while the other intermittent gear engages the driving gear. When the latter intermittent gear is driven, the former intermittent gear is brought into engagement with the driving gear by a simple initial driving assembly.

Abstract: A mode switching over gear mechanism for reel according to this invention is characterized in that a reel brake is disposed at the outside of the fast forward gear and the rewinding gear, respectively; a preload brake is disposed at the inside of the fast forward gear and the rewinding gear, respectively; and the control of the preload brake is effected by the same member as the control of the take-up gear effecting the mode switching over at the play, which member is different from the member for the control of the reel brake.Owing to this construction, since the preload brake is released at the same time as the mode switching over by the engagement of the take-up gear, no infructuous load is applied thereto.