DISK APPARATUS WITH SLIDING TRAY AND LOCK ARM FOR PREVENTING SLIDING TRAY MOVEMENT

A DISK APPARATUS COMPRISES A TRAY (102) FOR MOUNTING A DISC THEREON, A LOCK ARM (117) FOR LOCKING THE TRAY TO A MAIN BODY CHASSIS (100) AND RELEASING THIS LOCKING, A COIL (111) FOR OPERATING THE LOCK ARM BY AN ELECTROMAGNETIC FORCE, A COIL HOLDER(112) FOR HOLDING THE COIL AND TRANSMITTING THE ELECTROMAGNETIC FORCE TO THE LOCK ARM, A MAGNET (116) FOR APPLYING A MAGNETIC FLUX NECESSARY FOR THE OPERATION , A RAIL (103) FOR HOLDING THE TRAY TO THE MAIN BODY CHASSIS AND GUIDING AN ACCOMMODATION/EJECTION OPERATION, A PUSH BLOCK(104) FOR PUSHING OUT THE TRAY, A PUSH SPRING (105) FOR OPERATING THE PUSH BLOCK, AN EJECT BUTTON(106) PUSHED DOWN WHEN THE USER WANT TO EJECT THE TRAY, A DETENTION SWITCH(107) FOR DETECTING THE PUSH-DOWN OF THE EJECT BUTTON AND CONTROLLER(108) FOR APPLYING A VOLTAGE TO THE COIL UPON RECEIVING THE DETECTION INFORMATION. THE ENTIRE THICKNESS OF THE TRAY LOCK MECHANISM IS COMPOSED NO MORE THAN 5 MM AND IS ACCOMMODATED IN THE REAR INTERNAL SPACE OF THE RECESS SO THAT A DISK APPARATUS REDUCED IN THE THICKNESS IN THE HEIGHT DIRECTION OF THE OUTER CASE IS PRESENTED.(FIGURE 7)