US Patent 7416299 Tool-free adjustable nose pad assembly of eyeglasses

A nose pad assembly applicable to all types of eyeglasses is provided, which includes an eyeglasses mainframe, and a nose pad structure. The eyeglasses mainframe includes in its center a nose rack with a trough sleeve on either end for accommodating the nose pad structure. The trough sleeve includes a hook-wall, a center groove, a peripheral groove, and an upholding opening with a smaller opening on the side facing outwards than on the side contacting the nose rack. The center groove joins the peripheral groove at the delimiting edge. The nose pad structure includes a nose pad mainframe flanked on each side with an insertion base, which connects an insertion piece. Each insertion piece includes an insertion wedge and an insertion pillar with a protruding rim for firmly secured inside the trough sleeve against the delimiting edge.