Patent ID: 7311069

Claim:
A variable valve timing control device comprising: a housing member integrally rotating with one of a crankshaft and a camshaft of an internal combustion engine; a rotor member assembled to the housing member so as to be rotatable relative thereto and being slidable on a convex portion formed on the housing member, the rotor member including vane portions each forming an advanced angle chamber and a retarded angle chamber within the housing member, the rotor member integrally rotating with the other one of the crankshaft and the camshaft; a stopper formed on the convex portion and being in contact with at least one of the vane portions for restricting a relative rotation between the housing member and the rotor member to an advanced angle side or a retarded angle side; a lock mechanism for restricting the relative rotation between the housing member and the rotor member by a lock member formed on the housing member to be inserted into a receiving hole formed on the rotor member when a relative rotation phase between the housing member and the rotor member is positioned at a predetermined phase; and a fluid pressure circuit for controlling an operation oil to be supplied to or discharged from the advanced angle chamber, the retarded angle chamber, and the lock mechanism; wherein when the relative rotation between the housing member and the rotor member is restricted, the lock member is in contact with an inner peripheral face of the receiving hole on the advanced angle side and the retarded angle side between an opening portion and a bottom portion of the receiving hole.