Patent ID: 6929320

Claim:
A seat for a vehicle comprising: a back rest structure ( 3 ); a squab structure ( 2 ) mounted so as to pivot with respect to the back rest structure ( 3 ); a structure ( 5 ) supporting the squab structure ( 2 ) and the back rest structure ( 3 ), the back rest structure ( 3 ) being connected to the support structure ( 5 ) by a pivot connection ( 10 ), the support structure having a movable top part ( 5 a ) supporting the squab structure ( 2 ) and a fixed bottom part ( 5 b ), the top part ( 5 a ) being able to move in translation with respect to the bottom part ( 5 b ) in the longitudinal direction of the seat, and the back rest structure being pivotally connected to the top part ( 5 a ); a leg rest ( 4 ) connected by a pivot connection ( 6 ) to the front end of the squab structure ( 2 ); and a mechanical synchronization means ( 15 ) able to synchronize the movements of the back rest structure ( 3 ) and of the leg rest ( 4 ), the synchronization means ( 15 ) including, at least one connecting rod articulated with the back rest structure ( 3 ) by a pivot connection ( 23 ) situated at a distance from the pivot connection ( 10 ) between the back rest structure ( 3 ) and the support structure ( 5 ), between the pivot connection ( 10 ) and the bottom end ( 12 ) of the back rest structure, and at least one connecting piece having three articulation shafts, the first articulation shaft being connected to the squab structure close to the pivot connection between the leg rest and the squab structure, the second articulation shaft being pivotally connected to one end of the connecting rod, and the third articulation shaft being pivotally connected to one end of at least one link and the other end of the link being pivotally connected to the leg rest ( 4 ) by a pivot connection ( 24 ) situated close to the pivot connection ( 6 ) between the leg rest and the squab structure.