Vehicle sunshade guide mechanism

A sunshade guide mechanism, comprising:

• two guide rails disposed opposite each other, each guide rail having a brake face;
• two sliding carriages, each carriage disposed in one of said two guide rails, each sliding carriage having
• a body that shifts in the guide rail,
• a brake member connected to the body and that cooperates with the brake face to lock the sliding carriage in the guide rail, wherein the sliding carriage is symmetrical in relation to a transverse plane extending through the brake member, wherein the brake member is made of a material having a high coefficient of friction,
• at least one spring having a biasing force that acts upon the sliding carriage to press the brake member against the brake face, and
• a first tilt edge at a first end of the sliding carriage and a second tilt edge at a second end of the sliding carriage, the first and second tilt edges being spaced away from the brake member,
• wherein the sliding carriage can be swiveled about the first and second tilt edges against the biasing force of the spring to release the brake member from the brake face, wherein the tilt edge and a portion of the spring arm contacting the guide rail are each made of a material having a low coefficient of friction;
• and
• a crosspiece connecting the two sliding carriages.