Alternator damper pulley for vehicle

摘要

An alternator damper pulley for a vehicle includes a pulley body connected to an engine to receive a rotational power from an engine. A shaft connection portion is provided within the pulley body such that a rotational shaft of an alternator is insertedly coupled therein. A torsion spring is installed on an outer circumferential surface of the shaft connection portion to reduce a variation of the rotational power transmitted from the pulley body. A clutch is interposed between the torsion spring and the pulley body to connect or disconnect the shaft connection portion and the pulley body. A friction damper is installed to apply frictional damping force to the shaft connection portion.

主权项

1. An alternator damper pulley for a vehicle, the alternator damper pulley comprising:
a pulley body connected to an engine to receive a rotational power from the engine; a shaft connection portion provided within the pulley body such that a rotational shaft of an alternator is insertedly coupled therein; a torsion spring installed on an outer circumferential surface of the shaft connection portion to reduce a variation of the rotational power transmitted from the pulley body; a clutch interposed between the torsion spring and the pulley body to connect or disconnect the shaft connection portion and the pulley body; and a friction damper installed to apply a frictional damping force to the shaft connection portion, wherein the friction damper comprises: a friction plate configured to generate the frictional damping force to be tightly attached to the shaft connection portion; and a diaphragm spring pressing the friction plate toward the shaft connection portion, and wherein when a thickness of the diaphragm spring is t and a deflection possibility amount thereof is h, h/t=1.3−1.4 and an initial installation deflection ranges from 1.1t to 1.3t.