| 摘要 |
PURPOSE:To simplify the structure of sealing part by radially dividing the seal plate into several sections, by providing an oil chamber, which communicates with the inside of the oil collector, to the outer circumference of the seal plate and by pressing the seal plate in the inner circumferential direction by the discharge pressure of the pump. CONSTITUTION:The oil collector 2 is provided to the outside of the self-pump hole 5 of the runner 1, the doughnut-shaped seal plate 4 that is put between the runner and the oil collector is radially divided into plural sections, and each split piece is enabled to move centripetally. The oil chamber 9 that communicates with the inside of the oil collector 10 through the oil pipe 11 is provided to the outer circumference of the seal plate 4. In this way, since the discharge pressure produced by the self- pump itself is applied to the outer circumference of the seal plate 4 through the oil chamber 9 and the seal plate is pressed to the runner side, the sealing state between the oil collector and the runner can favorably be maintained with a simple device to reduce the oil leakage. |
