ENGINE VARIABLE PHASE DEVICE

摘要

[Problem] To provide an automobile engine variable phase device having a self-locking mechanism that generates a more reliable self-locking action. [Solution] This engine variable phase device comprises: a drive rotating body driven by a crankshaft; control rotating bodies that receive torque from a rotary operating force imparting means; a relative phase angle changing mechanism that changes the relative phase angle of a cam shaft relative to the drive rotating body in response to the rotation of the control rotating bodies; and a self-locking mechanism that utilizes cam torque to press a round surface section of a first control rotating body against a cylindrical section integrated with either the drive rotating body or the camshaft, preventing the relative phase angle from shifting. One or more oil guiding grooves are disposed on at least one of the inner peripheral surfaces of the cylindrical section and the round surface section.