Patent ID: 8720399

Claim:
A valve timing control apparatus of an internal combustion engine, comprising: a housing to which a turning force is transmitted from a crankshaft of the engine and on an inside of which a working oil chamber is provided; a vane member fixed on a camshaft, the camshaft making at least one engine valve of the engine open or close, that partitions the working oil chamber into at least one advance angle hydraulic pressure chamber and at least one retardation angle hydraulic pressure chamber, and that relatively revolves toward an advance angle side to the housing and toward a retardation angle side to the housing by selectively supplying and exhausting a working oil to and from the advance angle hydraulic pressure chamber and the retardation angle hydraulic pressure chamber; a first lock member installed axially movably on either one of the housing and the vane member; a first lock recess section installed on the other of the housing and the vane member and with which the first lock member is engaged when the vane member is relatively revolved at an intermediate phase position between a most advance angle side and a most retardation angle side; a second lock member installed axially movably on either one of the housing and the vane member; a second recess section installed axially movably on the other of the housing and the vane member and with which the second lock recess section is engaged when the vane member is relatively revolved at the intermediate phase position; and a third lock recess section installed at the retardation angle side in a circumferential direction of the housing with respect to the first lock recess section to limit a relative rotary position of the vane member at the most retardation angle side by an engagement of the first lock member with the third lock recess section, the first lock recess section, in a state in which the first lock member is engaged with the first lock recess section, allowing a movement of the first lock member by a predetermined quantity toward the advance angle side and limiting the movement of the first lock member toward the retardation angle side of the first lock member and the second lock recess section, in a state in which the second lock member is engaged with the second lock recess section, allowing a movement of the second lock member by another predetermined quantity toward the retardation angle side and limiting the movement of the second lock member toward the advance angle side of the second lock member.