Patent ID: 9062573
Filing Date: 2015-06-23
Classification: F01L

Abstract:
1. A valve timing controller provided in a driving force transmitting system in which a driving force of an internal combustion engine is transmitted from a driving shaft to a driven shaft, the valve timing controller adjusting a valve timing of an intake valve and/or an exhaust valve of an internal combustion engine, comprising: a housing which includes: a cylindrical portion; plate portions closing both ends of the cylindrical portion; and an engaging portion provided to one of the plate portions, wherein the plate portions and the cylindrical portion define accommodation chambers in a circumferential direction of the cylindrical portion, the housing rotating along with one of the driving shaft and the driven shaft around a center axis of the cylindrical portion; a vane rotor which includes: a cylindrical boss portion accommodated in the housing; a plurality of vanes protruding radially outwardly from the boss portion for dividing each of the accommodation chambers into a retard chamber and an advance chamber; and an engage groove formed on the boss portion in such a manner as to extend radially outwardly, the vane rotor rotating along with the other of the driving shaft and the driven shaft around a center axis of the cylindrical portion in a retard direction or an advance direction relative to the housing according to a hydraulic pressure in the retard chamber and the advance chamber; and a biasing member which is formed by winding a wire spirally and is fixed on one of the plate portions in such a manner that its inner end is engaged with the engage groove and its outer end is engaged with the engaging portion, whereby the vane rotor is biased in the advance direction or the retard direction relative to the housing, wherein: in a case that a most inner imaginary circle passing through a most inner center line at point p the inner end and the outer end are respectively engaged with the engage groove and the engaging portion in such a manner that the center O