US 2018/0023638 A1 · BELT PULLEY DECOUPLER

Abstract

A belt pulley decoupler is provided for transmitting a drive torque from the belt of an auxiliary unit belt drive to the shaft of one of the auxiliary units. The decoupler a belt pulley, a hub fixed on the shaft, and a one-way clutch and a coil torsion spring arranged in series in the drive torque flow between the belt pulley and the hub. The spring extends about the axis of rotation of the belt pulley decoupler and widens radially under transmission of a drive torque. The ends of the coil torsion spring contact respective axially ascending ramp-shaped spring support surface of a first spring plate and of a second spring plate. At least one of the spring plates is a sheet metal shaped part having a spring support surface integrally formed thereon.

Claims15

Dependent claims

A belt pulley decoupler for transmitting a drive torque from a belt of an auxiliary unit belt drive to a shaft of an auxiliary unit, the belt pulley decoupler comprising:

a belt pulley;
a hub configured to be fixed on the shaft;
and
a one-way clutch and a torsion coil spring arranged in series along a drive torque flow path between the belt pulley and the hub, the torsion coil spring extending in a direction of an axis of rotation of the belt pulley decoupler and widening radially under transmission of drive torque, wherein ends of the torsion coil spring contact an axially ascending ramp-shaped spring support surface of a first spring plate and of a second spring plate;
wherein at least one of the spring plates is a sheet metal shaped part with its spring support surface formed thereon.

2 more elements

Dependencies are inferred from the claim text.

Belt pulley decoupler

Life of this patent

Belt pulley decoupler

Life of this patent

Abstract

Claims15