Pivoting central armrest for motor-vehicle seat

Claim 1

Armrest, in particular a front central armrest of a motor vehicle comprising a movable part consisting of a frame covered by padding mounted pivotably about a horizontal hinging pin so as to be able to be moved between two stable positions, namely a lowered position where the movable part is substantially horizontal and a raised position where it is substantially vertical, in which the horizontal hinging pin is integral with the structure of the vehicle comprises a keeper of annular shape arranged coaxially relative to the hinging pin having a profiled active surface along an annular edge at one of its front ends, around the hinging pin, and in that the movable part comprises an operating assembly consisting of a support mounted slidably on the frame in the axial direction XX' carrying a bolt of annular shape mounted slidably on the hinging pin and having a profiled active surface along an annular edge capable of cooperating with the active surface of the keeper in order to lock the part movable in rotation in its vertical position and place this movable part in abutment downwards in its horizontal position and an operating button accessible on a lateral side of the armrest for axial displacement of the support and of the bolt by means of pushing, in order to perform unlocking of the movable part in the vertical position, by separation of the bolt and of the keeper, elastic return means being inserted between the operating assembly and the frame, so as to ensure the return of the bolt towards the keeper, wherein the active surface of the bolt consists of a peripheral surface of at least one finger axially projecting on one of the front faces of the bolt and in that the corresponding active surface of the keeper comprises at least one notch, the shape of which corresponds to that of the finger set back in the axial direction relative to the front surface of the keeper, a bearing surface forming a stop for the finger substantially parallel to the axial direction XX' and a ramp joining the notch to the bearing surface.