| 摘要 |
PROBLEM TO BE SOLVED: To obtain a disk cartridge which can relax force acting on an engagement wall and a protrusion, of an interlock mechanism for interlocking an externally operated moving operational member with a shutter member. SOLUTION: In the disk cartridge 10, a case 14 for rotatably accommodating a disk medium 12 is provided with a head opening 16 for permitting a head of a drive device to access a recording surface of the disk medium. When an inner rotor 60 is rotated by an external operation, a cam protrusion 72 and a groove wall of a cam groove 78 convert the turning force of the inner rotor 60 into the turning force of a second shutter 74, and part of the head opening 16 is opened/shut by turning a second shutter 74 around a support shaft 52 by the turning force. The cam protrusion 72 is provided with a roller member 90 which is turned around a support shaft 92 and which presses the groove wall while brought into rolling contact with the groove wall of the cam groove 78. COPYRIGHT: (C)2005,JPO&NCIPI
|
