Drive pulley, particularly mechanically decoupled drive pulley, for transformation of torque from crankshaft to belt drive for driving of auxiliary equipment, has hub and pulley rim, which are mounted around rotational axis

摘要

The drive pulley (2) has a hub (3) and pulley rim (4) mounted around a rotational axis (A) relative to each other in a rotary manner. A spring element (5) is provided with an end section, which is supported opposite to the hub in the direction of rotation, and with another end section, which is supported in relation to the puller rim in the direction of rotation. The spring element has a circumferential extension in integrated condition, which is smaller than 360 degree. A curved supporting surface has a coating of plastic, particularly an elastomer.