| 摘要 |
<p>A wheel differential 10 having an improved differential lock assembly is provided. The differential includes a differential housing 12 and a differential cage 14 rotatably supported on the differential housing 12 by a set of bearings 16, 18. The differential 10 also includes a clutch assembly 24 having a first member 94 fixed to the differential cage 14 and a second member 96 configured to receive an axle half shaft 68 extending from the differential cage 14 for rotation with the axle half shaft 68. Finally, the differential 10 includes an improved differential lock assembly 26 that selectively shifts the first and second clutch members 94, 96 into engagement to prevent relative rotation between the differential cage 14 and axle half shaft 68. The lock assembly 26 includes a shift chamber 90 that is supported on an outer race member 78 of the set of bearings. The shift chamber 90 may be formed within a bearing cap 20 that is coupled to the differential housing and disposed about at le ast a portion of the bearing set 16. The lock assembly 26 further includes a piston 110 disposed within the shift chamber 90 and a pushrod 112 coupled to the piston 110. A shift arm 114 is also coupled to the pushrod 112 and is configured to engage the second member 96 of the clutch assembly 24. The piston 110 may be urged in a first direction and a second direction, opposite the first direction, within the shift chamber 90 by the application of biasing and/or fluid forces.</p> |
