Hinge assembly

A hinge assembly comprising:

• a fixed member;
• a movable member connected to said fixed member such that said movable member is rotatable about a rotation axis and movable toward and away from said fixed member along said rotation axis;
• and
• biasing means biasing said movable member toward said fixed member,
• one of opposing surfaces of said fixed member and said movable member facing each other having an abutment member disposed therein, said abutment member being abutted against the other of said opposing surfaces by said biasing means,
• said the other of said opposing surfaces having a first cam portion disposed therein, said first cam portion converting a biasing force of said biasing means into a first rotational biasing force by being abutted against said abutment member,
• said movable member being rotationally biased in a first circumferential direction by said first rotational biasing force via said abutment member,
• characterized in that said one of said opposing surfaces has a receiving recess formed therein;
• that said abutment member is received in said receiving recess such that said abutment member is movable in a circumferential direction about said rotation axis within a predetermined range;
• and
• that said receiving recess has a first hitting portion disposed in one end portion thereof in said first circumferential direction, said first hitting portion defining one of limit points of a movable range of said abutment member and generating a clicking sound by being abutted against said abutment member moved by said first rotational biasing force,
• wherein said one of said opposing surfaces has a projecting portion disposed fixedly thereon, said projecting portion projecting toward said the other of said opposing surfaces;
• and
• wherein said the other of said opposing surfaces has a first sub-cam portion disposed therein, said first sub-cam portion converting said biasing force of said biasing means into a rotational biasing force by being abutted against said projecting portion, said rotational biasing force cooperating with said first rotational biasing force to cause said movable member to be rotated in said first circumferential direction.