Patent ID: 7475922

Claim:
A lock ( 1 ) for a door of a motor vehicle including a closing mechanism ( 4 ) designed to co-operate with a lock striker ( 6 ), said closing mechanism ( 4 ) comprising: a fork ( 8 ) which can assume an opening position, in which it enables engagement and disengagement between the lock striker ( 6 ) and a seat ( 13 ) thereof, and a closing position, in which it withholds the lock striker ( 6 ) within its seat ( 13 ) and prevents disengagement thereof; a dog ( 9 ), which can be coupled via snap-action with said fork ( 8 ) for blocking it in a releasable way in said closing position; and an auxiliary lever ( 22 ), which can be actuated by said fork ( 8 ) during coupling with the lock striker ( 6 ) for exerting an action of thrust on said dog ( 9 ) and causing it to couple with said fork ( 8 ) itself, wherein said auxiliary lever ( 22 ) is biased towards a position of detachment from said dog ( 9 ).