Adjustable unbalance function integrated balancing shaft for engine of motor vehicle, has unbalance mass displaced along adjusting direction of unbalance, and displacing unit displacing unbalance mass along adjusting direction of unbalance

摘要

The shaft (1) has an unbalance mass (M) displaced along an adjusting direction (D) of unbalance perpendicular to an axis (XX') of the shaft. A displacing unit displaces the unbalance mass along the adjusting direction of unbalance. The displacing unit comprises a screw (3) integrated with the shaft. The unbalance mass is displaced by rotation along the screw. The unbalance mass is fixed on a counter-nut (4) that is displaced by rotation. The screw is fixed on a support part (5) of the shaft. The unbalance mass has tubular shape.