Clasp locking device

A device (10) for locking a clasp (20), which device comprises a push-piece (100) which can move translatably in a support structure (110) between a rest position in which it is intended to prevent the clasp (20) from opening and an active position in which it is intended to no longer prevent the opening of the clasp (20), the locking device (10) being characterised in that it includes a blocking member (120) for blocking the push-piece (100), which member is configured to occupy a locking state in which it immobilises the push-piece (100) in the rest position, and an unlocking state in which it releases the push-piece (100) translatably, the push-piece (100) is connected to the support structure (110) via a locking rod (111), the blocking member (120) comprising a cam (112) that is capable of moving relative to the push-piece (100) so as to constitute an abutment for the locking rod (111) when the blocking member (120) occupies the locking state, and so as to move out of the path of the locking rod (111) when the blocking member (120) occupies the unlocking state.