An in-wheel motor unit includes an in-wheel motor (72) having a hollow axle (26) in which an axle internal space (28) allowing a first axle opening (30) to communicate with a second axle opening (32) is formed, a stator (74) fixed to the axle and a hollow motor housing (38) in which a motor internal space (64) to which the first axle opening of the axle opens is formed thereinside, a first seal (70) for securing liquid tightness of the motor internal space between the motor housing and the axle, a hollow arm (96) in which an arm internal space (114) to which the second axle opening opens is formed thereinside, to which the axle is fixed so as to be detachable, a second seal (112) for securing liquid tightness of the arm internal space between the arm and the axle, and a breather mechanism 116 (a first arm opening) opening to the arm internal space and communicating with outside air.
IN-WHEEL MOTOR UNIT AND ELECTRIC VEHICLE
RADINTERNE MOTOREINHEIT UND ELEKTROFAHRZEUG
UNITÉ DE MOTEUR-ROUE ET VÉHICULE ÉLECTRIQUE
2021-08-11
Patent
Electronic Resource
English
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
Electric wheel drive unit for driving wheel of motor vehicle
European Patent Office | 2021
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