PHASE CHANGE REDUCING CAM GEAR OF A VEHICLE FOR MINIMIZING THE POSITION CHANGE OF A GEAR IN ENGAGING DRIVE AND DRIVEN GEARS OF A DOUBLE OVER HEAD CAMSHAFT AND REDUCING VIBRATION AND RATTLING NOISE OF THE GEAR BY INSTALLING FIRST AND SECOND AUXILIARY GEARS TO BOTH SIDES OF A MAIN GEAR

摘要

PURPOSE: A phase change reducing cam gear of a vehicle is provided to minimize the change of cam angle and to reduce minimally the performance reduction of an engine and rattling noise of gears by first and second auxiliary gears mounted at both sides of a main gear. CONSTITUTION: A phase change reducing cam gear applied to one of drive and driven gears mounted at a camshaft of a double overhead camshaft engine to reduce the change of phases is composed of a main gear(210) mounted to one end of one of drive and driven camshafts comprising a double overhead camshaft; first and second auxiliary gears(220,320) arranged at both sides of the main gear; and first and second torsion springs(230,330) mounted between the main gear and the auxiliary gears to apply elastic force in different directions in rotating the main gear while the main gear and the auxiliary gears are combined .