Cassette-type magnetic tape player
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorTakehiro Terada
Life of this patent
Estimating the term…
Abstract
A cassette-type magnetic tape player has a take-up reel mount operatively coupled to a motor. The take-up reel mount is provided with an end-of-play detecting mechanism for substantially ejecting a tape container, such as cassette or cartridge, out of the player when a full length of magnetic tape has been wound around a take-up reel within the tape container. A rapid advance mechanism for transferring the magnetic tape onto the take-up reel at a speed higher than that required during normal recording or playback and a guide mechanism for guiding a movable chassis for movement in relation to a stationary chassis are also provided.
Claims9
A magnetic tape player for use with a self-contained tape container, such as a cassette or cartridge, accommodating therein a reeled magnetic tape, which comprises in combination:
- a stationary chassis having guide means for defining a passage through which said container is inserted into the player;
- a movable chassis carrying projection means rigidly mounted thereon, a capstan rotatably mounted thereon and a drive motor operatively coupled to said capstan for rotating said capstan in one direction when said drive motor is energized;
- guide means for mounting said movable chassis on said stationary chassis for enabling said movable chassis to move between inoperative and operative positions in a direction substantially parallel to the direction of insertion of said container, the plane of said movable chassis during movement thereof between said inoperative and operative positions shifting close to and away from the plane of said stationary chassis, said movement of said movable chassis being effected in response to the insertion of said container into the player with the front of said container engaging to said projection means to cause said movable chassis to be moved from said inoperative position towards said operative position;
- a pinch roller carriage pivotally mounted on the stationary chassis for pivotal movement between engaged and disengaged positions and normally biased to said engaged position, said pinch roller carriage including a pinch roller rotatably carried thereby, said capstan when said movable chassis is moved to said operative position penetrating into an opening in said container and cooperating with said pinch roller to sandwich the magnetic tape within said container between it and said pinch roller for driving said magnetic tape in one direction;
- a slidable plate slidably mounted on said stationary chassis for movement between inoperative and operative positions and normally biased to said inoperative position, said slidable plate having rigidly mounted thereon a transducer head which, when said slidable plate is held in said inoperative position, aligns with the magnetic tape within the container in readiness for recording or playback of sound information to be recorded or recorded on said magnetic tape, said transducer head separating from said magnetic tape when said slidable plate is moved towards said inoperative position by the application of finger pressure thereto;
- means for locking said movable chassis in said operative position after said movable chassis has been moved to said operative position in response to the insertion of said container through said passage on said stationary chassis;
- means for locking said slidable plate in said operative position after said slidable plate has been moved to said operative position by the application of said finger pressure thereto, said slidable plate locking means releasing said slidable plate from said operative position by the next succeeding application of the finger pressure thereto;
- means for disengaging said movable chassis locking means to release said movable chassis from sad operative position by the application of finger pressure irrespective of the position of said slidable plate locking means;
- a reel mount rotatably carried by said movable chassis and operatively coupled to said drive motor, said reel mount having a hub portion engageable into a take-up reel within said container for winding the magnetic tape therearound;
- said container, which has been inserted into the player, being removable when said movable chassis is moved from said operative position back to said inoperative position of said movable chassis, with said projection means pushing said container along said passage while sliding in a direction perpendicular to the plane of said container;
- and means for forcing said pinch roller carriage to said disengaged position with said pinch roller separating away from said capstan in response to movement of said slidable plate from said inoperative position towards said operative position.
An end-of-play detecting mechanism which comprises a take-up support for a take-up reel for winding a magnetic tape fed from a supply reel, the take-up reel and the supply reel being operatively housed within a self-contained container, such as a cassette or cartridge, utilizable in a cassette-type magnetic tape player;
- a take-up pulley rotatably mounted on said take-up support, said take-up pulley having an eccentric cam body thereon with an engagement recess therein with the cam body in offset relation to the axis of rotation of said pulley;
- slip clutch means coupled between said take-up support and said take-up pulley for driving said take-up support for tape winding;
- a biasing lever;
- detecting slip clutch means coupled to said take-up support for rotation by said take-up support and engaging said biasing lever for exerting a rotational biasing force on said biasing lever;
- and a switching lever having one end adapted to be connected to a switching device for a tape player and having the other end with a projection thereon engagable in said engagement recess in said cam body, said biasing lever engaging said switching lever for biasing said switching lever for holding the projection out of engagement in said engagement recess as long as said detecting slip clutch means exerts a biasing force on said biasing lever, whereby when substantially a full length of tape has been wound on the take-up reel and the rotation of the rotation of the take-up support is interrupted, the biasing lever no longer has the biasing force exerted thereon and said engagement on said switching lever is engaged in said engagement recess and continued rotation of said take-up pulley pulls said switching lever for actuating the switching device.
An end-of-play detecting mechanism which comprises a take-up support for a take-up reel for winding a magnetic tape fed from a supply reel;
- a take-up pulley rotatably mounted on said take-up support, said take-up pulley having an eccentric cam body thereon with an engagement recess therein with the cam body in offset relation to the axis of rotation of said pulley;
- slip clutch means coupled between said take-up support and said take-up pulley for driving said take-up support for tape winding;
- a biasing lever;
- detecting slip clutch means coupled to said take-up support for rotation by said take-up support and engaging said biasing lever for exerting a rotational biasing force on said biasing lever;
- and a switching lever having one end adapted to be connected to a switching device for a tape player and having the other end with a projection thereon engagable in said engagement recess in said cam body, said biasing lever engaging said switching lever for biasing said switching lever for holding the projection out of engagement in said engagement recess as long as said detecting slip clutch means exerts a biasing force on said biasing lever, whereby when substantially a full length of tape has been wound on the take-up reel and the rotation of the rotation of the takeup support is interrupted, the biasing lever no longer has the biasing force exerted thereon and said engagement on said switching lever is engaged in said engagement recess and continued rotation of said take-up pulley pulls said switching lever for actuating the switching device.
Dependencies are inferred from the claim text.