Abstract: The invention relates to a seat for an automobile vehicle including a seat cushion which supports a seat back and which is intended to be fixed on the vehicle floor by means of feet, the seat cushion comprising a seat cushion structure which includes at least two lateral flanges intended to support the seat back and at least two tubes transversely connecting the two flanges, at least two feet being added on each of the tubes. Each foot is spaced from the corresponding flange by a strut.

Abstract: The seat for automobile vehicles includes a seat frame and a backrest frame installed so as to pivot on the seat frame. A mechanism locking the backrest in position. The mechanism includes two half-housings which can rotate in relation to each other around a pivoting axis and attached to a flange of the seat frame and to a flange of the backrest frame respectively. At least one of the two half-housings includes studs inserted into holes formed in the corresponding seat frame flange and a space is then made between at least one stud and the corresponding hole into which a weld mass is deposited. The weld mass joins the seat frame half-housing to the seat frame flange.