| 摘要 |
PROBLEM TO BE SOLVED: To provide a drive shaft including opposed track joints having an improved controllability. SOLUTION: The drive shaft comprises two constant velocity joints used as the side shafts of a motor vehicle and an intermediate shaft. The drive shaft includes an outer joint member 11, an inner joint member 21, torque transmit balls 36 housed in a paired track having an outer track and an inner track, and a ball cage having a cage window guided to a plane on which an angle is equally divided into two when the balls are held in a common plane and the joints are connected together. A first outer track forms a first paired track with a first inner track. The tracks are separated from each other in the first axial direction toward the connecting end of the inner joint member and hold a first ball. A second outer track forms a second paired track with a second inner track. The tracks are separated from each other in the second axial direction toward the connecting end of the outer joint member and hold a second ball. The first paired track is positioned in the radial direction oppositely to the first paired track. The second pair is positioned in the radial direction oppositely to the second paired track. COPYRIGHT: (C)2004,JPO
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