| 摘要 |
1,224,090. Driving axles for motor vehicles. GENERAL MOTORS CORP. 16 Oct., 1969 [31 Oct., 1968], No. 50812/69. Headings B7D and B7H. [Also in Division F2] In a motor vehicle axle comprising a differential case 18 rotatably mounted in a housing 12 and a pair of intermeshing differential pinions 44 mounted in the case 18 for rotation about parallel axes extending obliquely of the axis of rotation of the case 18, a pair of half shafts 38 connected to the pinions 44 are so supported by bearings 48 that the half shafts are maintained in a resiliently flexed condition with the outer ends thereof constrained to rotate about a common axis coaxial with the axis of rotation of the case 18. The pinions 44 are integral with or rigidly attached to the half shafts 38 and are accommodated in two stepped bores 30, 32 formed in the case 18 with smaller diameter portions 36 and with larger diameter portions 34 which overlap to interconnect the bores. Spaced bearing portions 40, 42 on the half shafts 38 are received in the larger and smaller bore portions 34, 36, and the bearings 46 are of single-row ball or roller type whereby a bending moment is applied to the inner ends of the half shafts and only a unidirectional bending force to the outer ends so that the half shafts adopt a parabolically flexed condition. Axle tubes 14 extending from the differential housing 18 are off-set from the common axis of rotation of the bearings 48 and differential casing 18 to facilitate insertion of the half shafts 38. In another embodiment, Fig. 4 (not shown), a double-row bearing supports the outer end of each half shaft so that a bending moment is applied thereto and the half shaft adopts an arcuately flexed condition. Alternatively, a single bearing may be provided at the inner end so that each half shaft is parabolically flexed by a bending moment at the outer end thereof. |
