Driving mechanism for wiper blades

Details Driving mechanism for wiper blades Driving mechanism for wiper blades

B - Operations, Transporting

60

S

15/34

B60S 1/36 (2006.01) B60S 1/08 (2006.01)

Patent

CA 1268008

A B S T R A C T The invention relates to d driving mechanism for wiper blades of for example motor vehicles wherein two motors (149 15) impart to the wiper arm, or to at least one of its elements, not only a oscillating, but also a translational (radial) movement. The oscillating movement is imparted to the wiper arm by means of a drive shaft (12) actuated by a first motor (14) and the radial movement is imparted to the wiper arm by means of the drive shaft (13) of a second motor (15) and by means of a conical gear (9a, 9b) associated with a screw/nut system (8, 7) wherein the nut (7) moves radially when the drive shaft (13) of the second motor (15) is rotating. The two movements of the wiper arm are controled and regulated by an opto-electronical system comprising two slotted discs (14a, 15a), two reading heads (14b, 15b) and a micro-processor (19). Several embodiments of the invention are possible.

522672

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