Disc reading apparatus having a transferable motor unit and motor power disconnection
AssigneeKabushiki Kaisha Toshiba
InventorsNoboru Aoyama, Hiroshi Nakane, Takuro Ono
Life of this patent
Estimating the term…
Abstract
The present invention relates to a disc reproducing apparatus for allowing a tray that holds a disc to be unloaded and loaded from and in a cabinet. In the disc reproducing apparatus, a motor mount that holds a disc motor and a turn table can be transferred between the tray and a chassis in the cabinet. The tray has a pair of cavity portions functioning as a portion for holding a motor mount. The chassis has a pair of protrusion portions of guide shafts, a pair of lock levers, and a pair of guide protrusions as a portion for holding the motor mount. The lock levers are used as a means for transferring the motor mount between the tray and the chassis.
Claims31
A disc reading apparatus, comprising:
- a cabinet;
- a tray for holding a disc having data recorded thereon, said tray being supported by said cabinet so that said tray can be unloaded from and loaded into said cabinet;
- a motor unit including a turntable and a motor, the turntable securing the disc held on said tray and the motor driving the turntable when operating;
- a pickup for reading the data recorded on the disc;
- a chassis including a mechanism for supporting said pickup such that said pickup is movable in a radial direction of the disc held on said tray;
- a first holding portion, disposed on said tray, for holding said motor unit at least when said tray is unloaded from said cabinet;
- a second holding portion, disposed on said chassis, for holding said motor unit at a position where said pickup reads the data from the disc at least when said tray is loaded in said cabinet;
- and
- transfer means for transferring said motor unit held by said first holding portion to said second holding portion when said tray is loaded into said cabinet and for transferring said motor unit held by said second holding portion to said first holding portion when said tray is unloaded from said cabinet.
A disc reading apparatus, comprising:
- a cabinet;
- a tray for holding a disc having data recorded thereon, the tray being loadable into and unloadable from said cabinet;
- a motor, disposed on said tray, for driving the disc held on said tray;
- means for reading data from the disc;
- a supply circuit, disposed in said cabinet, for supplying electric power for driving said motor;
- a power circuit for electrically connecting said supply circuit to said motor;
- switch means for opening the power circuit when the tray is out of a loaded position in the cabinet so as to prevent flow of the electric power from the supply circuit to the motor and for closing the power circuit only when said tray is in said loaded position in said cabinet so as to allow flow of electric power from the supply circuit to the motor the switch means including a pair of electrode plates on the tray and a pair of contacts on the cabinet, the pair of electrode plates contacting the pair of contacts when the tray is in the loaded position in the cabinet;
- and
- short-circuit means for short-circuiting a portion of the power circuit connected to said motor when said switch means opens the power circuit;
- the short-circuit means including opposed surfaces of the pair of electrode plates biased to contact with one another, the cabinet including a non-conductive protrusion for separating the opposed surfaces of the electrode plates when the tray is in the loaded position.
Dependencies are inferred from the claim text.