GB1252520A - - Google Patents

Abstract

1,252,520. Differential gearing. VAUXHALL MOTORS Ltd. 8 Oct., 1970 [18 Oct., 1969] No. 51264/69. Heading F2D. In a motor-vehicle bevel differential gear assembly, of the type described in Specification 1,148,269, in which a pair of bevel pinion gears 10 mesh with a pair of bevel side gears 12, 14 and are carried by a cross-pin 36 mounted on a crown wheel 20 in an opposed pair of slots 42 in which the pin 36 can slide laterally and non- rotatably, such movement permitting selfalignment of the bevel pinion gears, a second opposed similar pair of slots 43 are formed in the crown wheel 20 whereby a second cross-pin 38 can be similarly laterally slidably mounted in the crown wheel 20 and carry a second pair of bevel pinions 11 which additionally mesh with the pair of bevel side gears 12, 14, the arrangement permitting utilization of one or two crosspins for two or four bevel pinion gears to transmit drive to the bevel side gears, depending on the requisite torque transmission requirements of the differential assembly. The cross-pins 36, 38 may have flattened middle portions which, when the two cross-pins are fitted, allow the cross-pins to rest together when in place in the opposed pair of slots in the crown wheel. To facilitate assembly of the cross-pin arrangement, the casing portion 26 has cast therein four slots 44, or has clearance holes drilled therein. Alignment of the pinions is assisted by partspherical internal surfaces of the casing portions 24 and 26 which engage corresponding partspherical external portions on the pinions 10 and 11.