Patent ID: 7150251

Claim:
A valve timing control apparatus comprising: a first rotary member rotationally driven in synchronous with a crank shaft of an engine; a second rotary member connected to a cam shaft so as to be rotationally driven; an advance hydraulic chamber and a retard hydraulic chamber formed by utilizing the first rotary member and the second rotary member, and increasing or reducing a volumetric capacity by a relative rotational direction while working with a relative rotation of both the rotary members; and the valve timing control apparatus changing a rotational phase of the cam shaft by selectively supplying and discharging an oil from a hydraulic pressure supply and discharge means with respect to said advance hydraulic chamber and said retard hydraulic chamber so as to change an opening and closing timing of an intake valve or an exhaust valve, wherein a hole portion in an axial center portion of the second rotary member is provided with a third rotary member having a control member, a rotation control portion controlling a rotating range of said control member, and a hydraulic pressure connecting passage portion integrally rotating with said control member and provided in a circumferential surface opposing to an inner peripheral surface of the second rotary member, and a communication path communicating with each of said advance hydraulic chamber and the retard hydraulic chamber provided in the second rotary member is communicated with said hydraulic pressure connecting passage in the case that the rotating range of said control member is controlled and the relative rotation of the third rotary member and the second rotary member stops.