Disc player
AssigneeSanyo Electric Co., Ltd.
InventorsYukiyasu Tsuruta, Takeshi Kamemura
Life of this patent
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Abstract
In a disc player according to the present invention, a single motor mounted on a chassis is coupled to a disc transport mechanism through a first power transmission system and to a pickup transport mechanism through a second power transmission system. The disc player includes a pickup restraining mechanism for restraining the pickup from moving upon the pickup reaching one end of path of its travel where the pickup is to be restrained. Approximately when the pickup reaches the path end, the restraining mechanism is coupled to the first power transmission system and thereby moved from a first position to a second position, where the restraining mechanism is coupled to the pickup transport mechanism to restrain the pickup at the path end.
Claims8
A disc player wherein a single motor mounted on a chassis for drivingly rotating a disc is coupled to a disc transport mechanism through a first power transmission system and to a pickup transport mechanism through a second power transmission system, the disc player comprising:
- a first intermittent power transmission incorporated in the first power transmission system and effecting power transmission during transport of the disc but non effecting power transmission during transport of a pickup;
- a second intermittent power transmission incorporated in the second power transmission system and not effecting power transmission during transport of the disc but effecting power transmission during transport of the pickup;
- and
- a pickup restraining mechanism mounted on the chassis for restraining the pickup from moving upon the pickup reaching one end of a path of its travel, the pickup restraining mechanism having an input portion that connects to the first power transmission system when the pickup reaches said one end of the path, and an output portion movable from a first position to a second position with the transmission of power tot he input portion, the output portion being releasable from the pickup transport mechanism at the first position and connecting to the pickup transport mechanism at the second position to restrain the pickup at the path end.
A disc player wherein a single motor mounted on a chassis for drivingly rotating a disc is coupled to a disc transport mechanism through a first power transmission system and to a pickup transport mechanism through a second power transmission system, the disc player comprising:
- a first intermittent power transmission incorporated in the first power transmission system and effecting power transmission during transport of the disc but not effecting power transmission during transport of a pickup;
- a second intermittent power transmission incorporated in the second power transmission system and not effecting power transmission during transport of the disc but effecting power transmission during transport of the pickup;
- and
- a tray positioning mechanism provided on the chassis for locking a tray in a loading position, the tray positioning mechanisms including a resilient piece provided on a feed gear constituting the disc transport mechanism, and an operating member coupled to the first power transmission system, the operating member being movable into contact with the resilient piece to elastically deform the resilient piece upon the tray moving to the loading position and to cause the tray to be biased and held in the loading position by repellent force of the resilient piece.
A disc player wherein a tray for transporting a disc is mounted on a chassis and reciprocatingly movable between a disc unloaded position and a disc loaded position, the tray being provided with a lifter for slightly raising the disc by the force of a spring during the transport of the disc, the disc player being characterized in that a stopper is provided on the chassis under the tray in the disc unloaded position for preventing retraction of the lifter, the lifter being free to move over the stopper and retract into the tray when the disc is completely loaded.
A disc player wherein a single motor mounted on a chassis for drivingly rotating a disc is coupled to a disc transport mechanism through a first power transmission system and to a pickup transport mechanism through a second power transmission system, the disc player comprising:
- a first intermittent power transmission incorporated in the first power transmission system and effecting power transmission during transport of the disc but not effecting power transmission during transport of a pickup;
- a second intermittent power transmission incorporated in the second power transmission system and not effecting power transmission during transport of the disc but effecting power transmission during transport of the pickup;
- and
- a break preventing mechanism incorporated at least in the first power transmission system for interrupting power transmission therethrough when the power to be transmitted increases abnormally, the break preventing mechanism including a pair of upper and lower gear segments supported by a shaft on the chassis and rotatable independently of each other, and a plate spring provided on the chassis for preventing the rise of the upper gear segment, the upper gear segment being disengageable from the lower gear segment against the plate spring when the power to be transmitted increases abnormally.
Dependencies are inferred from the claim text.