| 摘要 |
PROBLEM TO BE SOLVED: To provide a valve opening/closing time control device capable of being reduced in weight and size, and easily securing necessary strength.SOLUTION: A valve opening/closing time control device includes: a driving-side rotary body 1 rotating in synchronization with a crank shaft; a driven-side rotary body 3 relatively rotatably disposed at an inner peripheral side of the driving-side rotary body 1, and rotated in synchronization with a cam shaft; an advance angle chamber 5a and a delay angle chamber 5b formed by partitioning a fluid pressure chamber 5 between the driving-side rotary body 1 and the driven-side rotary body 3 by a partitioning portion 6 disposed on the driven-side rotary body 3; and a phase control portion controlling a rotational phase of the driven-side rotary body 3 to the driving-side rotary body 1 by supplying a pressurized fluid to the advance angle chamber 5a or the delay angle chamber 5b. The driven-side rotary body 3 has an advance angle flow channel 11a communicated with the advance angle chamber 5a and a delay angle flow channel 11b communicated with the delay angle chamber 5b, the driving-side rotary body 1 is made of an aluminum-based material, and the driven-side rotary body 3 integrally includes: an outer peripheral member 3a disposed on the partitioning portion 6 and made of the aluminum-based material; and an inner peripheral member 3b constituting an inner peripheral side with respect to the outer peripheral member 3a and made of an iron-based material. |
