Glass supporting assembly for a motor vehicle door with an unframed upper edge

Glass supporting assembly (1) for a motor vehicle door with an unframed upper edge;

• the assembly comprising:
• a fixed structure (5);
• a frame (8) comprising:
• a) at least one guide (14) to support a glass (2) and make the glass (2) slide between a raised position and a lowered position, and
• b) an upper portion (18) connectable to said door in such a way as to make said frame (8) tiltable in relation to said fixed structure (5) about a substantially horizontal axis of adjustment (19);
• a slot (27) obtained in one of either said fixed structure (5) or said frame (8) and elongated in a tangential direction (22) with respect to the axis of adjustment (19);
• a pin (28) carried by the other of either said fixed structure (5) or said frame (8), with an axis (26) orthogonal to said tangential direction (22) and slidable in said slot (27);
• and
• locking means (36) to lock said frame (8) in relation to said fixed structure (5);
• characterized by the fact that said pin (28) is rotatable about its own axis (26) in relation to said fixed structure (5) and said frame (8), and by the fact that it comprises a positioning device (40) that converts the motion from rotational to translational to position said pin (28) along said slot (27) in response to a rotation of said pin (28) about its axis (26).