Tape stop detecting mechanism

In a tape recorder including a support base, a pair of reel holders disposed on said base and rotating in concert with a tape run, rotating members severally mounted to rotate together with said reel holders, an automatic reverse system for detecting a stop of rotation of one of said reel holders in one direction by means of the rotating member engaging with said one reel holder and enabling said one reel holder to rotate in the other direction, a capstan to eanble said tape run, and a head for scanning a tape;

• the improvement wherein said automatic reverse system comprises:
• a tape stop detecting mechanism for detecting a stop of rotation of said rotating member, said tape stop detecting mechanism including
• a detector means disposed correspondingly to both said rotating members to be shifted from a non-detecting position to a detecting position when the rotation of said rotating member is stopped,
• a rotation wheel provided in association with said detector means,
• driving means for rotating the rotation engaging member in one direction, and
• an engaging means for engaging said detector means with said rotation wheel relatively to shift the same by the rotation force thereof when said detector means is shifted to said detecting position;
• and
• a reverse mechanism operated by the relative shift of said detector means and rotation engaging member to rotate said reel holders in said other direction.

A tape recorder according to clam 2, wherein said automatic reverse system includes forward and reverse play-back control switches, first and second movable members severally interlocked with said play-back control switches to locate said reel holders correspondingly to the operating state thereof, a switching member associated with said first and second movable members, with both said play-back control switches operated, a switching mechanism for controlling said switching member between first and second positions by means of a reverse operation control member which interlocks said switching member with said tape stop detecting mechanism to be located in a reverse position, bringing one of said first and second movable members into operation and the other into stand-by in said first position, and bringing one of said first and second movable members into stand-by and the other into operation in said second position, a recording control switch, a third movable member interlocked with said recording control switch to locate a recording system corresponding to the operating state thereof, and a reverse frequency control member associated with said first or second movable member and said third movable member and said reverse operation control member with both said play-back control switches and said recording control switch operated, holding on stand-by said first or second movable member that is brought into operation earlier with said tape stop detecting mechanism in operation, and shifting said reverse operation control member to a non-reverse position.