| 摘要 |
PURPOSE:To enhance the durability of both a double cone and an inner cone by providing a plane part, which collects the lubricating oil, at the outer periphery of the inner cone and also providing a lubricating oil supply port connecting an outer opening hole, which opens to the plane part, and an inner opening hole, which opens to the inner peripheral surface of the inner cone. CONSTITUTION:When an inner cone 7 and a double cone 15 make relative revolution, since the negative pressure is produced in a space 26, the lubricating oil in the space 26 which is formed by the inner peripheral surface of the inner cone 7 is absorbed into the space 26 through a lubricating oil supply port 24. On the other hand, since the form of the space 26 is narrowed into a wedged- form in the circumferential direction of the inner cone 7, the lubricating oil sucked out into the space 26 flows from the tip of the wedge part situated at the tip of the space 26 in the circumferential direction into a clearance part, which is formed by both inner peripheral surface of the double cone 15 and the outer peripheral surface of the inner cone 7. As a result, the surfaces between the double cone 15 and the inner cone 7, which face to each other, are well lubricated, thereby enhancing the durability of the inner cone 7. |
