US 4,905,105 AGranted

Automatic stop mechanism for tape recorder

AssigneeTanashin Denki Co., Ltd.

InventorsShinsaku Tanaka, Kunio Kido

Life of this patent

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Abstract

An automatic stop mechanism for a tape recorder is described. When a magnetic tape has been wound up fully on a reel, slipping takes place between a gear and reel shaft so that the reel shaft stops. As a consequence, a contact portion of a cam follower is caused to separate from a cam surface and a cam is brought into contact with the contact portion. Since the fulcrum of the cam follower is fixed, a turnable lever is caused to turn clockwise so that a gear is separated form the gear. By the turning motion of the turnable lever, its bent end portion presses a lug of a lock member from the right, thereby shifting the lock member leftwards. A head mounting plate is hence released from its engagement with the lock member and is allowed to return to its non-operated position, whereby a magnetic head is allowed to return to its stop position.

Claims3

Dependent claims

An automatic stop mechanism for a tape recorder, said mechanism comprising:

a control member movable between an operated and a non-operated position;
a lock member operably coupled to said control member for moving said control member between said operated and non-operated positions, said lock member being ordinarily biased in a locked position corresponding to said operated position;
a rotation transmitting member rotatably supported on said lock member;
a reel shaft;
and
a means operably coupled between said reel shaft and said rotation transmitting member for transmitting a rotary force to said reel shaft, said means detecting each stop of said reel shaft and, upon detecting a stop, said means causing said rotation transmitting member to move out from a rotary force transmitting path at an operated position of said rotation transmitting member, thus causing said lock member to move to its unlocked position, thus moving said control member to its non-operated position.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/103,068Filed 30 Sep 1987
Priority: JP 60-6528729 Mar 1985
Granted: 27 Feb 1990
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

G11B 15/1883
Driving; Starting; Stopping; Arrangements for control or regulation thereof: for record carriers inside containers
G11B 15/093
By sensing features present on or derived from record carrier or container: by sensing driving condition of record carrier, e.g. travel, tape tension
G11B 15/106
Manually-operated control; Solenoid-operated control: mechanically operated
G11B
Information storage based on relative movement between record carrier and transducer