VALVE OPENING/CLOSING PERIOD CONTROL DEVICE

摘要

Provided is a valve opening/closing timing control device in which oil channels are formed with a high degree of accuracy at low cost. The valve opening/closing timing control device includes: an advancing chamber and a retarding chamber that are formed by partitioning a fluid pressure chamber that is formed between a driving rotating body and a driven rotating body that is located on an inner circumference side of the driving rotating body so as to be relatively rotatable, with a partitioning portion that is provided on an outer circumference side of the driven rotating body; an advancing channel that is in communication with the advancing chamber; and a retarding channel that is in communication with the retarding chamber. The driven rotating body has: a first member that is cylindrical and is provided with the partitioning portion; and a second member that is cylindrical, has a rotational axis that is the same as a rotational axis of the first member, and has a portion that overlaps an inner side of the first member at least in a radial direction of the first member, out of the radial direction of the first member and an axial direction, and the advancing channel and the retarding channel are formed to penetrate through a boundary between the first member and the second member after the first member and the second member have been installed.