Non-circular sweeping windscreen wiper system for automobile, has wiper arm sliding movement control device comprising drive system with device for converting rotational motion into translatory motion

摘要

The windscreen wiper system has a plate (3) able to be put into alternating rotation with respect to a fixture by the shaft (4) of an electric motor (M1), and at least one wiper arm (5) mounted on the plate and able to slide in the radial direction. A device for controlling the sliding movement of the arm comprises a drive system (M2) providing alternating rotational movement and connected to a device (6) for converting the alternating rotational movement to alternating translatory movement. A control unit controls the electric motor (M1) and the drive system (M2) according to a pre-set and adjustable control principle determined according to the dimensions of the glass surface to be swept by the arm.