APPARATUS FOR DRIVING ALTERNATOR OF ENGINE, AND ALTERNATOR FOR ENGINE ACCESSOIRES USED THEREFOR

摘要

In implementation of an alternator driving apparatus of an engine which is capable of reducing a load applied to a power transmission belt by using a one-way clutch, between an alternator shaft (11) and a rotor (19) in an alternator (1), a one-way clutch (27) is interposed for transmitting to the rotor (19) a rotating force of the alternator shaft (11) from a crank shaft through a power transmission belt (3) at the time of increase in angular velocity during slight variations in angular velocity of the crank shaft while interrupting transmission of rotation between the rotor (19) and the alternator shaft (11) at the time of decrease in angular velocity during slight variations in angular velocity of the crank shaft to prevent rotating inertia torque of the rotor (19) from being inversely transmitted to the crank shaft through the power transmission belt (3). This eliminates the need for the extension of the alternator shaft (11), even if a pulley (1a) is connected to the alternator shaft (11) so as to rotate together with the alternator shaft (11) and the width of the pulley (1a) around which the power transmission belt (3) is to be wound is small. Thereby, such an alternator driving apparatus with a one-way clutch can be readily implemented. <IMAGE>