Power transmission apparatus for vehicle

A power transmission apparatus for a vehicle, the power transmission apparatus comprising:

• an electric motor;
• a generator;
• a first rotary shaft connected to an output shaft of a drive source and configured to integrally rotate with the output shaft of the drive source;
• a second rotary shaft spline-fitted to a rotary shaft of the electric motor;
• a third rotary shaft connected to both of the first rotary shaft and the second rotary shaft, the third rotary shaft coupled to a drive wheel, and the third rotary shaft connected to the second rotary shaft via a gear pair;
• and
• a positioning member configured to
• (i) apply an elastic force in a rotational direction to the rotary shaft of the electric motor and the second rotary shaft in a portion where the rotary shaft of the electric motor and the second rotary shaft overlap each other, and
• (ii) be arranged to determine each of a position in the rotational direction of a spline of the rotary shaft of the electric motor and a position in the rotational direction of a spline of the second rotary shaft to a specified position, and
• (iii) apply the elastic force in the rotational direction to the rotary shaft of the electric motor and the second rotary shaft such that the spline of the rotary shaft of the electric motor and the spline the second rotary shaft are each restored to the specified position.