| 摘要 |
PROBLEM TO BE SOLVED: To provide a valve opening/closing timing control apparatus that can highly accurately change a relative rotational phase between a driving-side rotation body and a driven-side rotation body while preventing deformation of a demarcating portion.SOLUTION: A valve opening/closing timing control apparatus includes: a driven-side rotation body 4 relatively rotatable inside a driving-side rotation body 2 having a cover member; demarcating portions 7 demarcating a space between both of the rotating bodies 2, 4 into respective fluid pressure chambers 6; partition portions 9 each partitioning the each fluid pressure chamber 6; a mechanism that changes the relative rotational phase between both of the rotation bodies 2, 4; a first engaging piece 23a and a first engaged groove 22a respectively provided in a first demarcating portion 7a and the driven-side rotation body 4; a second engaging piece 23b and a second engaged groove 22b respectively provided in a second demarcating portion 7b and the driven-side rotation body 4; at least one of a most advanced position stopper 26 and a most retarded position stopper 27 respectively provided in demarcating portions 7c, 7d different from the first/second demarcating portions 7a, 7b; and coupling members 8 that are inserted into both side positions interposing the first engaging piece 23a of the first demarcating portion 7a and both side positions interposing the second engaging piece 23b of the second demarcating portion 7b. |
