| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a differential device surely performing lubrication of gears provided within a differential case by a simple structure. <P>SOLUTION: In the differential device 1, a ring gear 7 which scrapes up oil stored in the bottom of a transmission housing 12 while rotating integrally therewith and a differential case are stored within the transmission housing 12, pinion gears 8, 9 and side gears which rotate while meshing with each other are stored within the differential case, and a differential operation is performed by the rotation of the pinion gears 8, 9 and side gears. In a part above the pinion gears 8, 9 and side gears within an inner surface 13 of the transmission housing 12, a change part 13a larger in surface roughness than a part on the rotating directional upstream side of the differential case is provided. <P>COPYRIGHT: (C)2011,JPO&INPIT |
