Variable valve timing device

摘要

A variable valve timing device includes a rotation transmitting member rotated integrally with a rotation shaft of an engine, a rotor member disposed in the rotation transmitting member to be rotated relative to the rotation transmitting member and rotated integrally with an intake and exhaust valves controlling member, a fluid chamber defined between the rotor member and the rotation transmitting member, a vane radially equipped to one of the rotor member and the rotation transmitting member, and a covering member fixed to the rotation transmitting member for covering the fluid chamber. An axial edge surface of the biasing member discontinuously comes in contact with at least one of the rotor member and the covering member.