A hidden marvel, window regulators are probably one of the most complex parts within the door system of a modern vehicle. Glass can be curved in one or more planes so that its movement within the door when the regulator is activated must accommodate the height, weight and curvature of the window. The window regulator must be designed to fit precisely within the packaging of the door alongside all the other contents such as motors, latches, wiring, speakers, impact bars and air bag and yet its movement not be compromised by them. The seals must ensure that the window will not allow rain or noise to penetrate the cabin or the glass to ‘pop out’ at speed. The choreography of the window, moved by the regulator, must negotiate the seals at the top of the door, which usually means it must move in by fractions of millimetres immediately before moving out again to dock with the upper seal. Anti-trap mechanisms must usually be incorporated into modern cars, which adds further complexities.

Designing a regulator is not an easy task but we have honed our skills to expert levels on these hidden examples of engineering excellence.