Abstract: A glass supporting assembly for a motor vehicle door with an unframed upper edge is provided with a fixed structure and a frame, which has at least one guide to support and guide a glass and is connectable to the door in such a way as to make it tiltable about a substantially horizontal axis of adjustment; a slot is obtained in a tangential direction in relation to the axis of adjustment in one of either the fixed structure or the frame, and is slidingly engaged by a pin with an axis orthogonal to the tangential direction; the pin is carried by the other of either the fixed structure or the frame, carries a screwed locking nut, and is axially rotatable; the rotational motion of the pin is converted into translational motion by a positioning device to position the pin along the slot.

Abstract: A glass supporting assembly for a motor vehicle door with an unframed upper edge is provided with a fixed structure and a frame, which has at least one guide to support and guide a glass and is connectable to the door in such a way as to make it tiltable about a substantially horizontal axis of adjustment; a slot is obtained in a tangential direction in relation to the axis of adjustment in one of either the fixed structure or the frame, and is slidingly engaged by a pin with an axis orthogonal to the tangential direction; the pin is carried by the other of either the fixed structure or the frame, carries a screwed locking nut, and is axially rotatable; the rotational motion of the pin is converted into translational motion by a positioning device to position the pin along the slot.