Magnetic tape recording and/or reproducing apparatus

Claim 2

A magnetic tape recording and/or reproducing apparatus for reocrding and/or reproducing signals on a magnetic tape wound on reels contained in a tape cassette, said apparatus comprising: means (186) for accomplishing recording and/or reproducing signals on/from said magnetic tape in a specific tape path outside of said tape cassette (20); a reversible motor (121);- a pair of reel drive turntables (10, 12) engageable with said reels (14, 16) for rotating said reels (14, 16); loading means (182, 183) moved by one directional rotation of said motor (121) from an inoperative position to an operative position for drawing said magnetic tape (180) out of said tape cassette (20) and loading said magnetic tape in said specific tape path, and moved back by the reverse directional rotation of said motor (121) from said operative position to said inoperative position; operating mode changing means comprising at least one rotatable disc (142, 162) for changing the operating mode of said apparatus from one operating mode to another; drive means (43, 45) which engages with said rotatable disc (162) only during tape loading/unloading operation so as to be driven by said rotatable disc (162) for driving said tape loading means (182, 183) between said inoperative position and said operative position; locking means for holding said driving means to limit movement of said loading means toward said inoperative position when said loading means is on said operative position.

Claim 3

An apparatus according to claim 1, wherein said driving means comprises gear means driven by said rotatable disc for driving said tape loading means from said inoperative position to operative position and pressure means for fixing said loading means at said operative position; and said locking means comprises cam means for holding said driving means.

Claim 4

An apparatus according to claim 1, which comprises first cam member and a claw member fixed on said rotatable disc, a brake control member moved by said rotatable disc between first position where brake power acts against said pair of reel drive turntables and second position where said pair of reel drive turntables are free to rotate so as to control brake operation against said pair of reel drive turntables corresponding to an operating mode of said apparatus, spring means for urging said brake control member in the direction of said first position, a ratchet member which is fixed on said brake control member and engageable with said claw member for moving said brake control member from said first position to said second position by one directional rotation of said rotatable disc from its stopping position, a cam follower which is fixed on said brake control member and engageable with said first cam member for moving said brake control member between said first position and said second position by the reverse directional rotation of said rotatable disc from its stopping position, and release means for releasing engagement of said ratch member with said craw member corresponding to the reverse directional rotation of said rotatable disc in order to return said brake control member to said first position from said second position quickly by said spring means.

Claim 5

An apparatus according to claim 3 which further comprises a tension detecting means which has a rotatable arm and is engageable with said magnetic tape for detecting tension of said magnetic tape, second cam member built on said rotatable disc which is engageable with said rotatable arm and rotated to plural position by rotation of said rotatable disc corresponding to said operating mode of said apparatus for releasing engagement of rotatable arm with said magnetic tape.

Claim 6

A magnetic tape recording and/or reproducing apparatus for recording and/or reproducing signals on a magnetic tape, said apparatus comprising: a reversible motor; a rotatable disc driven by said motor; operating mode changing means moved to plural positions by said rotatable disc for changing operating mode of said apparatus; housing means connected axially to said motor and having a radial outward opening; reducing means built in said housing for reducing rotation of said motor and transmitting reduced rotation of said motor to said rotatable disc through.said opening.

Claim 7

A magnetic tape recording and/or reproducing apparatus for recording and/or reproducing signals on a magnetic tape, said apparatus comprising: a reversible motor; a rotatable disc driven by said motor; operating mode changing means moved to plural positions by said rotatable disc for changing operating mode of said apparatus; housing means connected axially to said motor and having a radial outward opening; reducing means built in said housing for reducing rotation of said motor and transmitting reduced rotation of said motor to said rotatable disc through.said opening.

Claim 8

An apparatus according to claim 5, wherein said rotatable disc has first spur gear, said reducing means has second spur gear which engages with said first spur gear, and axis of rotation of said first spur gear is pararell to axis of rotation of said second spur gear.

Claim 9

An apparatus according to claim 5 which comprises a pair of reels contained in a tape cassette for winding said magnetic tape, a pair of reel drive turntables engageable with said reels for rotating said reels, first cam member and a craw member fixed on said rotatable disc, a brake control member moved by said rotatable disc between first position where brake power acts against said pair of reel drive turntables and second position where said pair of reel drive turntables are free to rotate so as to control brake operation against said pair of reel drive turntables corresponding to an operating mode of said apparatus, spring means for urging said brake control member in the direction of said first position, ratch member which is fixed on said brake control member and engageable with said craw member for moving said brake control member from said first position to said second position by one direc- 'tional rotation of said rotatable disc from its stopping position, a cam follower which is fixed on said brake control member and engageable with said first cam member for moving said brake control member between said first position and said second position by the reverse directional rotation of said rotatable disc from its stopping position, and release means for releasing engagement of said ratch member with said craw member corresponding to the reverse directional rotation of said rotatable disc in order to return said brake control member to said first position from said second position quickly by said spring means.

Claim 10

An apparatus according to claim 7 which comprises a tension detecting means which has a rotatable arm and is engageable with said magnetic tape for detecting tension of-said magnetic tape, secondcam member built on said rotatable disc which is engageable with said rotatable arm and rotated to plural position by rotation of said rotatable disc corresponding to said operating mode of said apparatus for releasing engagement of rotatable arm with said magnetic tape.