| 摘要 |
A valve timing control apparatus (1) includes a driving-side rotating member (3) having a housing member (3B) and a plate member (3A, 3C), a driven-side rotating member (5) arranged in a coaxial manner relative to the driving-side rotational member (3), a retarded angle chamber (6) and an advanced angle chamber (7) defined by the driving-side rotating member (3) and the driven-side rotating member (5) and used for changing a relative rotational phase of the driven-side rotating member (5) relative to the driving-side rotating member (3) in a retarded angle direction (S2) and in an advanced angle direction (S1) in response to an operation oil supplied to the retarded angle chamber (6) and the retarded angle chamber (7), respectively, and a through hole (3E) formed at one of the housing member (3B) and the plate member (3A, 3C), wherein a first slidably contact portion (5B), which serves as a bearing portion between the driving-side rotating member (3) and the driven-side rotating member (5), has a lower sliding resistance than other slidably contact portions. |
