Patent ID: 6935291

Claim:
A variable valve timing controller disposed in a torque transfer system from a driving shaft to a driven shaft of an internal combustion engine, the driven shaft opening and closing at least one of an intake valve and an exhaust valve, the variable valve timing controller adjusting opening and closing timing of at least one of the intake valve and the exhaust valve, comprising: a housing rotating with one of the driving shaft and the driven shaft, and including a circumferential wall and side walls defining a chamber therein; a vane rotor rotating with the other of driving shaft and the driven shaft, and having a vane accommodated in the chamber which is divided into a retard angle chamber and an advance angle chamber, the vane rotor rotating in a retard angle direction and advance angle direction relative to the housing while receiving a fluid pressure in the retard angle chamber and the advance angle chamber; and a bolt connecting the circumferential wall with one of side walls; wherein a projected portion is provided on one of an inner wall surface of the circumferential wall and an outer wall surface of the vane, the projected portion projecting toward the outer wall surface of the vane or the inner wall surface of the circumferential wall in a rotational direction; when the inner wall surface and the outer wall surface are contact with each other at the projected portion, a center point of a force applied to the projected portion is located outside of an contacting area where the bolt is threaded into the circumferential wall in order that the circumferential wall is connected with the side wall by the bolt.