Tape cassette

A tape cassette comprising:

• a flat, box-like cassette case;
• a recording medium tape accommodated in said cassette case;
• a lid for protecting, when said tape cassette is not in use, a portion of said recording medium tape exposed out of said cassette case;
• wherein
• a fulcrum of said lid is composed of a fulcrum pin and a receiving portion for receiving and holding said fulcrum pin,
• said receiving portion being made of an elastic synthetic resin and having a circular inner peripheral face for receiving said fulcrum pin,
• said inner peripheral face being partially notched for providing an introducing portion, and
• a frontage of said introducing portion being slightly smaller than an outer diameter of said fulcrum pin;
• said fulcrum pin being notched on an outer peripheral face thereof along an axis of said fulcrum pin at opposite sides of said axis to form generally an ellipse in cross section of said fulcrum pin;
• and
• said frontage of said introducing portion of said receiving portion for receiving said fulcrum pin is slightly smaller than an interval between the notches formed on said fulcrum pin.

A tape cassette for use in a recording/reproducing apparatus, wherein:

• a front lid is swingably secured on a cassette case, said front lid covering and protecting, when said tape cassette is not in use, a recording medium tape at a portion exposed out of said cassette case in which said recording medium tape is accommodated;
• said cassette case is formed at a front section thereof with a passing recess through which a lid-opening member passes, said lid-opening member being provided on said recording/reproducing apparatus for opening a front lid of said tape cassette;
• said front lid is formed at an inner face thereof with a closing projection to be engaged with said passing recess;
• and
• said front lid is further formed at the inner face thereof with a projecting face being flush with a projected end face of said closing projection, said projected end being positioned generally in parallel with said recording medium tape when said front lid is closed.