| 摘要 |
A differential gear system (20) for a vehicle includes a casing (22) having two sun gears (28, 30) connected to half shafts for the vehicle's wheels, and two sets of planetary differential pinions (60) surrounding the sun gears. Each set of differential pinions is in meshing engagement with one of the sun gears, and the two sets are also in meshing engagement with one another. Each pinion of one set is engaged with two adjacent pinions of the other set, all of the pinions collectively arranged in a circle surrounding the axis of the sun gears. Each pinion is enclosed in a pocket (58) in the casing, the pockets (58) intersecting to allow engagement of the pinions with one another. Each pocket also encloses a pressure pad (48, 62), a spring (50, 64), and a pressure washer (52, 66) on the axial outer end of the enclosed pinion. The springs bias the pressure pads against the pinions to provide frictional resistance against differential action. For each pocket, a set screw (56, 70) is provided in an axial threaded bore (54, 68) of the casing, the end of the set screw bearing upon the pressure washer. Adjustment of the set screws permits fine tuning of the system's frictional resistance to differential action. |
