Single motor disc player with a Geneva mechanism

A disc player comprising:

• a base section;
• a loading section mounted on the base section and linearly movable with respect to the base section;
• a rotary tray rotatably mounted on the loading section for receiving a plurality of discs;
• a driving motor provided in the loading section for producing a driving force;
• a turn table provided under the rotary tray, the turn table being capable of moving up and down, so as to mount a disc when the turn table moves up;
• a first operating mechanism for transmitting a driving force from the driving motor to the rotary tray, and for moving down the turn table when the rotary tray is to be rotated;
• a second operating mechanism for transmitting a driving force from the driving motor to the loading section for moving the loading section;
• and
• change-over means for selecting an operation of the first operating mechanism or the second operating mechanism, the change-over means including an engagement pin and being movable along an elongate groove in a direction of motion of the loading section,
• wherein the first operating mechanism includes a cam unit for transmitting a driving force to the rotary tray and to the turntable,
• wherein the cam unit includes a plurality of projections for transmitting a driving force to the rotary tray, and further includes a cam portion for effecting a downward movement of the turntable, wherein each of the plurality of projections is formed to be engageable between any two of a plurality of protruding portions of a Geneva structure.

A disc player comprising:

• a base section;
• a driving motor for producing a driving force;
• a loading section mounted on the base section and linearly movable with respect to the base section in response to the driving force;
• a rotary tray rotatably mounted on the loading section for mounting a plurality of discs arranged circumferentially on the rotary tray at equal angular intervals;
• an operating mechanism provided underneath the rotary tray for transmitting the driving force from the driving motor to the rotary tray, wherein the operating mechanism includes a Geneva structure having a plurality of protruding portions, wherein each one of a plurality of cam pins formed on a cam unit is engageable between any two of the plurality of protruding portions, the cam unit further having a convex surface for slidably engaging corresponding concave surfaces of the Geneva structure;
• and
• a lock lever coupled to the operating mechanism and including an engagement pin slidable along a groove in a direction of the linear motion of the loading section in response to the driving force,
• wherein, in response to the driving force, the operating mechanism initially unclamps one disc of the plurality of discs prior to rotating the rotary tray by one angular interval, and then clamps the one disc of the plurality of discs after rotating the rotary tray by one angular interval.

A disc player comprising:

• a base section;
• a loading section mounted on the base section and linearly movable with respect to the base section;
• a rotary tray rotatably mounted on the loading section for receiving a plurality of discs;
• a driving motor provided in the loading section for producing a driving force;
• a turn table provided under the rotary tray, the turn table being capable of moving up and down, so as to mount a disc when the turn table moves up;
• a first operating mechanism for transmitting a driving force from the driving motor to the rotary tray, and for moving down the turn table when the rotary tray is to be rotated, the first operating mechanism including a cam unit coupled to the driving motor and to a Geneva structure, the cam unit having a convex arcuate surface for slidably engaging corresponding concave arcuate surfaces of the Geneva structure, the cam unit further having a plurality of cam pins each engageable between any two of a plurality of protruding portions of the Geneva structure;
• a second mechanism for transmitting a driving force from the driving motor to the loading section for moving the loading section;
• and
• change-over means for selecting an operation of the first operating mechanism or second operating mechanism.

A disc player comprising:

• a base section;
• a driving motor for producing a driving force;
• a loading section mounted on the base section and linearly movable with respect to the base section in response to the driving force;
• a rotary tray rotatably mounted on the loading section for receiving a plurality of discs;
• an operating mechanism provided underneath the rotary tray for transmitting the driving force from the driving motor to the rotary tray, the operating mechanism including a Geneva structure having a plurality of protruding portions, wherein each one of a plurality of cam pins formed on a cam unit are engageable between any two of the plurality of protruding portions, the cam unit further having a convex surface for slidably engaging corresponding concave surfaces of the Geneva structure;
• and
• a lock lever coupled to the operating mechanism and including an engagement pin slidable along a groove in a direction of the linear motion of the loading section in response to the driving force.