Patent ID: 6018446
Filing Date: 2000-01-25
Classification: G11B

Abstract:
A magnetic disc cartridge comprising:a casing provided with a magnetic head insertion opening;a magnetic disc rotatably provided in said casing;a shutter member for opening and closing the magnetic head insertion opening;a shutter spring formed entirely of a coiled metal spring which is engaged with the casing at one end and with the shutter member at the other end and which urges the shutter member to the closing position to close the magnetic head insertion opening due to resiliency of said shutter spring generated by deflection thereof;wherein said shutter spring comprises a first end, a second end, and an intermediate portion, and said shutter spring is deflected at said intermediate portion to urge said shutter member to the closing position;a first hook connected to said first end of said shutter spring; anda second hook connected to said second end of said shutter spring;wherein said first hook is engaged with said casing, and said second hook is engaged with said shutter member.