Device for guiding a sliding window, glazed vehicle door equipped with said device, and vehicle equipped with such a door

A glazed door with a flush window of a motor vehicle, comprising:

• a panel which is extended by a frame, the frame including a front upright and a rear upright mutually connected by a crossbar, the frame and the panel together delimiting an opening,
• a sliding window, movable between a closed position wherein the sliding window completely shuts the opening and an open position wherein the sliding window is at least partly engaged in the panel and at least partly clears the opening,
• wherein the glazed door comprises a guiding device for guiding the sliding window, the guiding device comprising:
• a guide rail inserted and retained in one of the front upright and the rear upright of the frame of the door, the guide rail having a profile, provided with a cylindrical longitudinal recess opening onto a longitudinal slot, which extends an entire length of the rail, the guide rail being mounted in one of the front upright and the rear upright so that the longitudinal slot opens in a direction of the opening,
• and at least one guide shoe attached to an inner face of the sliding window, the guide shoe comprising at least one guiding head engaged in the cylindrical longitudinal recess opening through the longitudinal slot,
• wherein the guide shoe is rigid,
• wherein the guiding head of the guide shoe comprises at least three flat parts extending radially from a central axis of the guiding head, while being evenly distributed about the guiding head, the entire length of each flat part extending radially about the guiding head,
• and wherein the guide rail comprises a flexible and elastically deformable elastomer material, which surrounds the guiding head, so that a free end of each flat part of the guiding head are is constantly bearing against an inner wall of the cylindrical longitudinal recess opening to hold the guide shoe while permitting the axial sliding of the guide shoe in the guide rail and which allows the mounting of the guide rail on a curved part of the door frame
• and wherein the rail and the shoe are dimensioned and positioned so that the window is flush.