A mechanical reducer case for converting a motor torque into a drive torque for an opening is provided, the case forming a guide rail guiding the opening into a closed position or into an open position. Also disclosed is a motorized system for driving an opening including the preceding case and a method for manufacturing the preceding case including a half-shell.

A window regulator guide rail is provided, including an elongated body having a snap anchor; and a ring rotatably coupled to the rail via engagement with the snap anchor, the ring for guiding a cable.

A window regulator (1) provided in a door (9) of a vehicle to raise and lower a windowpane (90) in the door (9) includes a guide rail (20) arranged along the travel direction of the windowpane (90), a wire (3) tensely fitted along the longitudinal direction of the guide rail (20), and a traveling body (4) that is guided by the guide rail (20) and travels together with the windowpane (90). The traveling body (4) includes a drum (40) with a part of the wire (3) wound thereon, a motor (5) generating a drive force that rotates and drives the drum (40), and a housing (6) that holds the drum (40) and the motor (5). The motor (5) is more outwardly situated in a vehicle width direction than the guide rail (20) in the door (9).

A motor vehicle window lifter is provided with a twistable or bendable guide rail on which a driver to be coupled with a window pane is shiftably mounted and which includes fastening points which are connectable with fastening receptacles of a carrier element. Between the fastening receptacles of the carrier element at least one supporting point is provided. When bracing the fastening points of the guide rail with the fastening receptacles of the carrier element, the guide rail supports on the supporting point and twisting of the initially straight guide rail with a specified degree of twisting and/or bending of the guide rail with a specified bending radius is effected.