Axle-drive block with a differential lock

Details Axle-drive block with a differential lock Axle-drive block with a differential lock

B - Operations, Transporting

60

K

B60K 17/346 (2006.01) B60K 23/08 (2006.01)

Patent

CA 2475541

Disclosed is an axle drive block for a motor vehicle, comprising a first and a second differential (18, 19) in a driven housing (22). Both of said differentials are coaxially aligned planetary spur gears, the sun wheels (32, 43) of which are drivably connected to the semiaxes (8, 9) of the first driven axle. The planet wheels (36, 38) of both differentials (18, 19) mesh with the joint ring gear (35) of said sun wheels (36, 38). In order to lock the interaxle differential (19), the housing (24) is provided with a first striking surface (51) interacting with a second striking surface (53) which is pressed thereto by means of ball ramps (59, 59', 60, 60').

L'invention concerne un bloc d'entraînement d'essieux de véhicule à moteur, comportant un premier et un deuxième différentiel (18, 19) monté dans un carter entraîné (22). Ces deux différentiels (18, 19) sont des engrenages planétaires à pignons droits et axes parallèles, dont les roues solaires (32, 43) sont chacune reliées par entraînement au demi-essieu (8, 9) du premier essieu entraîné, les roues planétaires (36, 38) des deux différentiels (18, 19) s'engrenant dans la couronne (35) commune. Afin de verrouiller le différentiel (19) entre les essieux, le carter (24) comprend une première surface de frottement (51), qui coopère avec une deuxième surface de frottement (53) appliquée par pression par des rampes à billes (59, 59', 60, 60').

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