Lace lock and lacing system for shoes

Lace lock comprising a body with openings that can be crossed by a lace (4) and provided with means for locking the lace in a locking position in which the sliding of said lace through said openings is prevented, said means also being adapted to unlock the lace to allow it to slide in said openings, characterized in that said body is constituted by a frame (1) on which two opposed levers (2d, 2s) are hinged, with a right lever (2d) and a left lever (2s), each of which can rotate on said frame (1) to assume a raised position (A) and respectively a lowered position (B), in which in the raised position (A) each lever (2d, 2s) leaves a corresponding space (3d, 3s), crossable by a lace (4), space that is closed when the levers (2d , 2s) are in lowered position, so that, when the levers (2d, 2s) are raised, the lace (4) is free to slide between each of the levers (2d, 2s) and the frame (1) and vice versa, when the levers (2d, 2s) are lowered, the lace (4) is not free to slide, wherein each of said levers (2d, 2s) is structured so as to define an empty space (VS) within each said lever (2d, 2s), the empty space (VS) configured to be crossable by the lace (4).