How Does a Window Regulator Work?

by Isabel Prontes


Window regulators are found in vehicle doors and are used to lower and raise car windows. They are some of the most commonly used parts of a car, since people are always lowering or raising their windows, depending on whether they want air or are too cold. Because of this factor, window regulators always run the risk of wearing down and breaking.


Window regulars allow power windows to go either up or down. Window regulators transform the motor's rotary movement into the vertical and linear motions of car windows. The window system consists of an electric motor, several spur gears and a single worm gear, all of which create a significant amount of torque that can raise up the window. When the worm gear spins around gear, tension is created that binds the gears together. The worm gears then lock making the windows unable to be opened by outside forces.


There are two different types of window regulators: manual window regulators and electric window regulators. Manual window regulators have handles you can crank to raise or lower the window. Manual window regulators cause spur gears and the worm gear to create a rotation, which causes the plates to move and thus either lowers or raises the windows. Electric window regulators are much easier and more convenient. Simply by clicking a button, your windows either go up or down---electronically. A tiny electric motor allows this to happen. Many electric window regulators are composed of a master switch inside of its console, which is easy to access and locate.

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