Audio eyeglasses with double-detent hinge

Audio eyeglasses, comprising:

• a frame for resting on a head of a user, the frame comprising:
• a lens region;
• a pair of arms extending from the lens region;
• a hinge coupling each of the pair of arms with the lens region;
• and a cable extending through each hinge, wherein each hinge comprises:
• a body defining a cavity accommodating the cable;
• and
• a hinge mechanism within the body, the hinge mechanism comprising:
• a spring located in the lens region, the spring comprising at least one lever arm extending within the cavity;
• and
• a cam member contacting the lever arm of the spring, wherein the cam member comprises a notch along a contact surface for resisting kickback from the spring when the audio eyeglasses are in a fully closed position.

Audio eyeglasses, comprising:

• a frame for resting on a head of a user, the frame comprising:
• a lens region;
• a pair of arms extending from the lens region;
• a hinge coupling each of the pair of arms with the lens region;
• and a cable extending through each hinge, wherein each hinge comprises:
• a body defining a cavity accommodating the cable;
• and
• a hinge mechanism within the body, the hinge mechanism comprising:
• a spring located in the lens region, the spring comprising at least one lever arm extending within the cavity;
• and
• a cam member contacting the lever arm of the spring, wherein the cam member comprises a set of contact surfaces for directing a force from the at least one lever arm to separately maintain the audio eyeglasses in a fully closed position, and a fully open position, respectively.