A support mechanism is disclosed notably for a portable telephone, which is formed by transport means and positioning means for transporting the receiver clipped onto a piece of garment or a belt and for putting the receiver in an upright position on a piece of furniture. According to the invention, the transport and positioning means include a clip intended to be affixed by a first fixed end at the top of the back face of the receiver and including a tilting member which pivots around a shaft arranged at the second elastically movable end of the clip.