| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vehicle drive shaft that can suppress a grease oozing on an outer circumferential surface of boots of a universal joint from being scattered around the boots. <P>SOLUTION: The vehicle drive shaft 10 includes a tripod type slidable constant velocity universal joint 24 that is provided in a differential gear device 20 side end of a vehicle drive shaft 10 and a Rzeppa type fixed constant velocity universal joint 26 that is provided in a drive wheel 22 side end of the vehicle drive shaft 10. Regarding first boots 34 of the universal joint 24 and second boots 36 of the universal joint 26, since the first boots 34 where an environmental temperature T in an installation area is higher have a relatively lower lubricant-containing rate, an amount of oil which permeates the first boots 34 and appears on the outer circumferential surface of the first boots 34 is made to be relatively lower. Accordingly, a lubricant or the grease bleeding on the outer circumferential surface of the first boots 34 can be suppressed from being scattered around the first boots 34. <P>COPYRIGHT: (C)2012,JPO&INPIT |
