The Advantages of Auto Window Regulator

The auto window regulator is a flexible element (chain, cable, toothed belt) that is tensioned inside the door between several rollers. The flexible element is powered by an impulse coming from the drive drum. When the drum rotates, one branch of the flexible element winds up, the second branch winds off. The element itself begins to move progressively. The flexible element is connected to the window with a plate. The main advantage that distinguishes the cable regulator is its high maintainability.

Regulators can also have one or two levers. The single-lever window lifter mechanism in its design has a lever, a toothed gear and plates. Plates are fastened to the window with bolts and move it in the right direction. There is a window runner at the end of the lever – it is a device that moves the plate along the rack with the window. It is usually a plastic roller with a small amount of lubricant. A working principle of such a front window lifter mechanism is very simple. When the driver presses the button or turns the crank, the toothed gear is activated. It moves along the rack up and down. And since the window is connected to the plate, it also moves in a given direction due to the runner. If it’s an power window lifter mechanism, this process is controlled by an electric motor. It is one that moves the gear in the direction given by the button. There are no cables here – only wires.

It is believed that the single-lever mechanism is less reliable (skew occurs more often), fails faster, and the process of window lowering is slower. The double-lever window lifter mechanism has, accordingly, not one, but a pair of levers, as well as classic plates and toothed gears. A cable or reversing motor is used as a drive element. Runners are attached to the second lever in two places. One moves the plate with the window, the second moves only on the plate inside the door. Toothed gears are located on left and right sides of the drive gear.

A rack and pinion lifting mechanism includes a stationary toothed rack and a guide plate, which is connected to the window. The drive mechanism is located on the plate, and its gear is engaged with the toothed rack, due to which the window moves. The window moves in a given direction due to the guides: there are grooves inside door frames, and there are special rails in the body. Rack and pinion windows are more durable (if the gears are not plastic), have a higher speed than cable ones, and at the same time produce less noise.