FINAL DRIVE ASSEMBLY WITH DIFFERENTIAL LOCK

• Main Author: PECNIK, HERMANN
• Format: Patent
• Language: English; French
• Published: 03.04.2003
• Edition: 7
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

The invention relates to a final drive assembly for a vehicle that comprises , in a driven housing (22), a first and a second differential (18, 19). Said differentials (18, 19) are spur planetary gear units with parallel axles the sun wheels (32, 43) of which are functionally linked with the respective hal f- shafts (8, 9) of the first driven axle. The planet wheels (36, 38) of the tw o differentials (18, 19) intermesh with the ring gear (35) they have in common . In order to lock both the axle differential (18) and the interaxle differential (19) with minimum complication, the housing (22) is provided wi th a machined inner surface (50) that encloses the ring gear (35) with little play. The ring gear, in the radial direction, is so thin that it is deformed by the radial component of the forces exerted by the teeth of the planet wheels (31, 36) in a loboid manner, thereby forcing its outer peripheral surface (60), at least locally by friction, against the inner surface (50) o f the housing (22), thereby producing a braking torque on the ring gear.</SDOA B>