| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lubrication structure of a differential gear eliminated in the seizure of conical rolling bearings. <P>SOLUTION: In the lubrication structure of the differential gear, lubricating oil store in a first oil basin 12 at the lower part of a differential case 11 is scraped up by a ring gear 50, and the scraped-up lubricating oil is supplied to a pair of the conical rolling bearings 20, 30 via an oil feed passage 13 formed at the differential case 11, an introduction port 68 and an oil introduction space 63 which are formed at a bearing case 60. A plurality of protrusions 53 arranged in the oil introduction space 63 between the conical rolling bearing 30 at the side of a pinion 41 and the introduction port 68 are formed at the outer periphery of a pinion shaft 40 in the circumferential direction, and a flow of the lubricating oil flowing to the conical rolling bearing 30 at the side of the pinion 41 from the introduction port 68 is blocked by the protrusions 53 which rotate together the pinion shaft 40. <P>COPYRIGHT: (C)2013,JPO&INPIT |
