Patent ID: 8127729
Filing Date: 2012-03-06
Classification: F01L

Abstract:
1. A valve timing control apparatus comprising: a first rotator that is rotatable synchronously with one of a crankshaft and a camshaft of an internal combustion engine, wherein the first rotator includes a first gear portion; a second rotator that is coaxially received in the first rotator and is supported at both sides of the second rotator in an axial direction by the first rotator, wherein the second rotator is rotatable synchronously with the other one of the crankshaft and the camshaft and includes: a planetary gear that is meshed with the first gear portion and the second gear portion and is adapted to make a planetary motion and thereby to change the relative phase between the crankshaft and the camshaft, wherein: valve timing of a valve, which is opened and closed by the camshaft, is adjusted through transmission of a torque from the crankshaft; the second rotator includes: the small diameter portion and the large diameter portion of the second rotator are supported at the both sides of the second rotator in the axial direction by the first rotator.