Driving force transmitter and valve timing controller using the same

A valve timing controller for an internal combustion engine, comprising

• a housing rotating with a crankshaft of the engine or a camshaft driving an intake valve and/or an exhaust valve;
• a transmitting member accommodated in the housing, the transmitting member rotating with the crankshaft or the camshaft;
• and
• a torsion coil spring having a first end engaged with the housing and a second end engaged with the transmitting member, the torsion coil spring biasing the transmitting member in an advance direction or a retard direction with respect to the housing;
• wherein
• the housing includes an opening confronting the transmitting member, and a chamber accommodating the transmitting member,
• the transmitting member includes a projecting portion rotatably supported by the opening, and a projection which is accommodated in the chamber, rotates keeping a touch with an inner surface of the housing, and circumferentially divides the chamber,
• an intersection point of a rotational center axis of the transmitting member and a line passing through an engaging point of the first end of the biasing member and substantially vertically intersecting the rotational center axis of the transmitting member is positioned in such a manner as to be within a range corresponding to a width in which the projecting portion is supported by the opening, and
• a valve timing of the intake valve and/or the exhaust valve is adjusted by controlling pressure in the chamber.