| 摘要 |
PURPOSE:To permit the stable feeding of oil even if oil level lowers by utilizing centrifugal force and viscosity by inserting a cylindrical body having a spiral oil groove on the outer peripheral wall, into a hole part formed in the axial direction of a rotary shaft and supporting said cylindrical body so as not to be revolved. CONSTITUTION:A hole part 48 is formed at the center part in the axial direction of a rotary shaft 41, and a plurality of oil holes 49.... Which cross at right angles with the hole part 48 and communicate to a main bearing 46, auxiliary bearing 47, and an eccentric part 42 are formed onto the inner peripheral surface of the hole part 48. Inside the hole part 48, a spiral oil groove 50 is formed onto the outer wall, and a cylindrical body 52 having a flange 51 at the lower edge is inserted, and fixed between a valve cover 53 by screws 54... through the flange 51. With the above-described constitution, the viscosity of lubricating oil can be utilized, needless to say of centrifugal force, and always stable feeding of oil is permitted even if the number of revolution or the oil level reduces. |
