Auxiliary machine-driving device for vehicle

An auxiliary machine-driving device for a vehicle, the auxiliary machine-driving device comprising:

• a first roller that rotates integrally with a rotary shaft of an engine;
• a second roller that rotates integrally with a rotary shaft of a motor/generator;
• a third roller that rotates integrally with a rotary shaft of an auxiliary machine;
• a fourth roller provided between the first roller and the second roller;
• a fifth roller that always contacts the second roller and the third roller;
• and
• an actuator for switching the fourth roller between a state of contact with and a state of separation from the first roller and the second roller,
• a direction of rotation of the second roller is a direction of rotation in which a wedge effect is generated on the fourth roller, and
• the actuator placing the fourth roller is in a state of contact with the first roller and the second roller upon the engine being started by a driving force of the motor/generator.