OVERRUNNING ALTERNATOR DAMPING PULLEY

摘要

The present patent application discloses an overrunning alternator damping pulley. The overrunning alternator damping pulley includes a pulley body, two ball bearings provided on both ends of a shaft hole of the pulley body; and a hub for supporting the two ball bearings. At least one spring holder is provided on the hub. At least one friction spring is installed on the spring holder. One end of the friction spring is inserted to the spring holder. Another end of the friction spring forms a free end spirally extending along an axial direction of the hub. The outer ring of the friction spring is in contact with an inner wall of the pulley body. A damping groove corresponding to the friction spring is provided on the inner wall of the pulley body.

主权项

1. An overrunning alternator damping pulley comprising:
a pulley body; two ball bearings provided on both ends of a shaft hole of the pulley body; and a hub for supporting the two ball bearings; wherein at least one spring holder is provided on the hub, at least one friction spring is installed on the spring holder; one end of the friction spring is inserted into the spring holder; another end of the friction spring forms a free end spirally extending along an axial direction of the hub; the outer ring of the friction spring is in contact with an inner wall of the pulley body; wherein a damping groove corresponding to the friction spring is provided on the inner wall of the pulley body; wherein the damping groove is in an annular shape, the damping groove has a variable width according to a bumping requirement; the damping groove is provided near an end portion of the spring holder; wherein the spring holder has an arc groove, one end of the friction spring which inserts to the spring holder is clamped in the arc groove; wherein two sides of the spring holder are inserted to two friction spring respectively, the two friction springs are concentrically set at the two sides of the spring holder with an opposite rotation direction; wherein the spring holder has two arc groove, and the friction spring has two arc grooves, two friction springs are opposite disposed in the spring holder correspondingly; and wherein two locking blocks are set on an opposite sides of the hub respectively; two locking grooves corresponding to the two locking blocks are set in the spring holder, the locking blocks are locked in the locking grooves; wherein the locking blocks are located in a middle of the hub.