Device for assembling a spherical joint of a reflector of a vehicle headlamp, improved headlamp comprising said device and vehicle provided with said headlamp

A device (1) for assembling a spherical joint (2) for the reflector (3) of a headlamp comprising a tubular shank (14) obtained in one piece with a block (11) of the joint provided with a spherical seat (12) adapted to snappingly receive a spherical head (9) integrally in use to a headlamp body (5) by means of a respective stem (10), the shank (14) being formed by at least one pair of elastically deformable fins (16); a seat (15) for receiving the shank (14) obtained in one piece with the reflector (3); and a pin (17) adapted to selectively take a first position, being aligned with the shank (14) at a mouth (18) thereof facing the spherical seat and being connected in one piece to the block through a cuttable diaphragm (19), and a second position, in which it is at least partially driven within the tubular shank (14) and interferes with the elastically deformable fins (16) to such an extent that, when the shank is inserted in the reception seat, they interfere with a side wall (20) of the reception seat (15).