Lubricating device for a vehicle motor

A lubricating system for a wheel motor provided with a casing having a side wall portion joining top and bottom portions for containing said wheel motor, a stator which includes a stator coil wound therearound and which is fixed in said casing, a hollow cylindrical rotor which is rotatably supported within said casing through a bearing and which is disposed inside said stator, an output flange which is rotatably supported within said casing through a bearing and which is fixed to a wheel, a reduction mechanism which includes an input gear supported by said rotor and an output gear supported by said output flange and which is disposed in said hollow in said rotor, an oil pump motor disposed in a lower portion of said casing, said lubricating system comprising:

• a first oil passage extending upward through said side wall portion of said casing;
• a second oil passage which is formed in said top portion of said casing and which is connected to said first oil passage for receiving oil therefrom, said second oil passage having a discharge port through which oil is ejected onto said stator coil for cooling said stator coil;
• and
• a third oil passage extending from said second oil passage to said reduction mechanism for supplying oil to said reduction mechanism.