VEHICLE FINAL REDUCTION GEAR UNIT

摘要

A vehicle final reduction gear unit allowing a reduction in size is provided. The final reduction gear unit has a first friction brake that occupies an area between a right case member which is a stationary body and a differential case which is a rotating body and applies a pressing force in an axle direction to generate a frictional force in order to put a brake on the differential case, and a second friction brake that occupies an area between the differential case and the right wheel, and applies a pressing force in the axle direction to generate a frictional force in order to use a rotational difference to put the differential mechanism into a lock state. The second friction brake is placed within the radius of the first friction brake. A reduced size is accomplished and the final reduction gear unit can be reduced in length in the vehicle-transverse direction. As a result, a vehicle final reduction gear unit allowing a reduction in size can be provided.