Patent ID: 7318641

Claim:
A pivotal mechanism for suspending a lens to a spectacle having a spectacle and a front suspension lens module, wherein a frame support is provided to connect the two lens frame of the spectacle, the vertical face of the inner side of the two ends of the frame support is provided respectively with an engaging recess which can be circular arch shape or square or other shape, the engaging recess is mounted with engaging bead which is retractable; and the front suspension lens module includes a front suspension support having two ends for positioning front suspension lens, the bottom end face of the support is protruded to form two engaging protrusions having a shape matching the engaging recess of the spectacle, the protrusion face of the engaging protrusion is provided with an engaging hole; whereby the engaging protrusion is correspondingly inserted into the engaging recess such that the engaging bead engages with the engaging hole.