Disc cartridge including elastically deformable lid member and engaging mechanism for locking lid member to cartridge body

A disc cartridge comprising:

• a cartridge body for storing a disc-like recording medium, said cartridge body being constructed and arranged to permit rotation of the recording medium when the recording medium is stored therein, said cartridge body having an opening portion for exposing a part of a surface of the recording medium and a disc inlet/outlet port for receiving the recording medium in and removing the recording medium from said cartridge body;
• a shutter mounted on said cartridge body and slidable between an open position in which said opening portion is exposed and a closed position in which said opening portion is closed;
• a lid member mounted on said cartridge body and rotatable between a closed position in which said lid member closes said disc inlet/outlet port and an open position in which said lid member opens said disc inlet/outlet port;
• said lid member having a first end portion pivotally supported on said cartridge body and a second end portion which is pivotable around said first end portion to move said lid member between the open and closed positions,
• said cartridge body including an abutting portion that abuts against said lid member when said lid member is rotated to the closed portion, said abutting portion including a slanting surface which faces and is oblique to said second end portion of said lid member and which defines a clearance between said slanting surface and said second end portion when said lid member is in the closed position and is not elastically deformed;
• and
• an engaging mechanism that releasably locks said second end portion against said cartridge body to maintain said lid member in the closed position when said second end portion is positioned in the closed position and elastically deformed in a direction toward said abutting portion so as to eliminate the clearance.