Loading device for a cartridge

A cartridge loading device comprising:

• a cartridge holder for receiving therein a cartridge, said cartridge holder having side walls with pins formed thereon;
• a base provided with guide grooves through which said pins formed on side walls of said cartridge holder are received, for guiding said cartridge holder;
• a loading plate supported movably on said base for causing said cartridge holder to reciprocatingly move along said guide grooves of said base between a first position where said cartridge is loaded/unloaded and a second position where a disc received in said cartridge is adapted to be drivingly rotated;
• an eject plate supported movably on said base, for unloading said cartridge recieved in said cartridge holder, for holding said cartridge holder at said first position and for allowing, when said cartridge is loaded, said cartridge holder to move to said second position;
• a sub-eject plate supported movably on said base which is adapted to come into contact with said loading plate;
• at least one first resilient member connected at one end to said loading plate and at the other end to said sub-eject plate for resiliently engaging said loading plate and said sub-eject plate with each other;
• at least one second resilient member for biasing said loading plate in one direction;
• at least one third resilient member for biasing said eject plate in a direction for discharging said cartridge;
• a first lock lever engaging with a lock claw formed in said loading plate to thereby lock said loading plate and restrict a movement of said loading plate;
• a second lock lever for locking said sub-eject lever and restricting a movement of said sub-eject lever;
• and
• a drive means for driving said first lock lever.