askvity

How Does an Electric Window System Work?

Published in Automotive Technology 2 mins read

An electric window system works by using an electric motor to power the raising and lowering of a vehicle's window, activated by a switch.

Here's a more detailed breakdown of how it works:

  • The Switch: The driver or passenger operates a switch located on the door panel. This switch is typically a rocker or toggle switch with "up" and "down" positions.

  • The Electric Motor: When the switch is activated, it sends an electrical signal to a small, but powerful, electric motor located inside the door. This motor is designed to rotate in either a clockwise or counter-clockwise direction, depending on whether the "up" or "down" position is selected on the switch.

  • The Regulator (Opening Mechanism): The electric motor is connected to a window regulator. The regulator is the mechanical linkage that translates the motor's rotational motion into the linear motion needed to raise or lower the window glass. There are two main types of regulators:

    • Cable Regulator: A cable regulator uses a system of cables and pulleys to move the window. The motor turns a spool that winds or unwinds the cable, which is attached to the window. This type is lighter and more compact.

    • Scissor Regulator: A scissor regulator uses a pivoting arm mechanism resembling a pair of scissors. The motor's rotation drives the arms, causing them to extend or retract, thereby raising or lowering the window. This type is generally more robust and can handle heavier windows.

  • Window Glass and Guides: The window glass is attached to the regulator. As the regulator moves, it guides the glass up or down within the window frame through channels or tracks.

  • Power Source: The entire system is powered by the vehicle's electrical system, typically a 12-volt DC power supply.

In essence, the electric window system converts electrical energy into mechanical energy to provide convenient control over the window position. Pressing the button activates the motor, which in turn powers the regulator to move the window.

Related Articles