Strap clasp

A strap clasp movable between an open and a closed position comprising, the clasp having a longitudinal axis, a locking member articulated around an articulation shaft which is positioned transverse to the longitudinal axis of the clasp, said locking member movable between a first turned up rest position and a second turned down working position, the locking member maintaining the clasp in its closed position when the locking member is in said working position, the locking member being operable to effect a translation movement parallel to said articulation shaft, a resilient return member associated with said locking member for said translation movement, said return member urging upon the locking member to maintain the locking member in said working position, said articulation shaft including a section of non-circular cross-sectional configuration, the locking member including a passageway for receiving said articulation shaft, said passageway having an ending portion of cross-sectional configuration which is substantially the same as the non-circular cross sectional configuration of the articulation shaft, whereby the ending portion of the passageway is engaged by the non-circular section of the articulation shaft when the locking member is in said working position.