| 摘要 |
PURPOSE:To steadily feed lubricating oil at all times by providing valve mechanism which allows lubricating oil to flow only in the direction of an oil passage from an introduction passage, one end of which is opened to the teeth bottom of engaging teeth and the other end of which is opened to the starting end part of the oil feed passage. CONSTITUTION:As for an introduction passage 31, its starting end is opened to engaging teeth 29b where an advancing gear 21 and a retreating gear 22 engage with each other among the engaging teeth 19a of a driving gear 19 and its finishing end is opened to a position corresponding to the lower end of a lower oil feed passage 30. When a torque transmission 19, the advancing gear 21 and the retreating gear 22 are rotated, lubricating oil which adhered or filled in each engaging tooth 19a, 21a, 22a is pressured. When an opening end on the teeth bottom 19b side reaches the engaging part at this condition, a part of the pressured lubricating oil flows into inside of the introduction passage 31. |
