Locking mechanism for motor vehicle door and arrangement of such device on a wall of said door

摘要

The locking mechanism comprises a base plate (14) including a support (16) with a housing (18) for a lock barrel and a sealing joint (34) pressed against the base plate. The housing includes a barrel access end (18A). The joint comprises an extension forming a sealing part (36) for the barrel access end which has a skirt (38) engaging a complementary edge (40) of the support delimiting the housing access end.