| 摘要 |
<p>PROBLEM TO BE SOLVED: To restrain deterioration of responsiveness and fixation of a seal member even under a constitution for maintaining a sealing property when pressure of working fluid is increased.SOLUTION: A seal member 36 is held by a holding face 34 of a vane rotor 14, slides on a seal face 32 of a housing rotor 11 and seals between an advance angle chamber 22a and a retard angle chamber 22b. The seal member 36 includes: pressure receiving faces 364a, 364r for receiving pressure from working fluid of a specific chamber 38 that is the advance chamber 22a or the retard angle chamber 22b toward the seal face 32; diffuser faces 362a, 362r for enlarging seal gaps 366a, 366r from the seal face 32 as they are isolated from the specific chamber 38 in a circumferential direction; and elastic deformation parts 361a, 361r for elastically deforming the diffuser faces 362a, 362r to a side for pressing them to the seal face 32 as the pressure applied to the pressure receiving faces 364a, 364r from the restoration state where the diffuser faces 362a, 362r are separated is increased .</p> |
