| 摘要 |
PROBLEM TO BE SOLVED: To provide a gear fluid device capable of preventing wear of a sliding surface effectively, while keeping a lubrication state of a bearing part with a simple structure.SOLUTION: Groove parts 53, 55 are provided so that a through hole 5a and a relief groove 51 do not communicate with each other, on a further radially inner side than a tooth bottom diameter of a drive gear 1 and on a further radially outer side than the through hole 5a in which a first rotary shaft 11 of the drive gear 1 is inserted, on a sliding surface of a first side plate 5 (sliding member). Also, groove parts 54, 56 are provided so that a through hole 5b and the relief groove 51 do not communicate with each other, on a further radially inner side than a tooth bottom diameter of a driven gear 2 of the first side plate 5 (sliding member) and on a further radially outer side than the through hole 5b in which a second rotary shaft 12 of the driven gear 2 is inserted. |
