Patent ID: 8978608
Filing Date: 2015-03-17
Classification: F01L

Abstract:
1. A valve timing control apparatus for an internal combustion engine, comprising: a driving rotary body to which a rotational force is transmitted from a crankshaft; a driven rotary body fixed to a camshaft; an electrically driven motor fixed to the driving rotary body; a speed reduction mechanism configured to reduce a rotation of the electrically driven motor and to transmit the reduced rotation to the driven rotary body; a phase modification mechanism which is capable of modifying a relative rotational phase of the camshaft with respect to the driving rotary body in accordance with an engine state; a cover member arranged at the tip side of the phase modification mechanism and fixed to a chain cover of the internal combustion engine; a pair of inner and outer periphery slip rings disposed on either one of a tip surface of the phase modification mechanism or another tip surface of the cover member opposed to the tip surface of the phase modification mechanism to supply an electric power to the electrically driven motor; and a pair of brushes disposed on either the other of the tip surface of the phase modification mechanism or the other tip surface of the cover member and constructed to slidably contact on the respective slip rings, wherein a plurality of projection sections projected toward the cover member are integrally mounted on a bearing member configured to rotatably journalize the camshaft and a plurality of positioning pins are extended over the cover member and the respective projection sections.