Patent ID: 9038799
Filing Date: 2015-05-26
Classification: B60K,F01P,F16D,F16H

Abstract:
1. A component comprising: a clutch assembly with a driving member, a driven member, a wrap spring and an actuator, the driving member having a clutch surface and being configured to be coupled to a source of rotary power, the wrap spring comprising a plurality of helical coils, a tang and an engaging portion, at least a portion of the helical coils being engaged to the clutch surface, the tang extending from a first axial end of the wrap spring, the engaging portion being disposed on a second, opposite axial end of the wrap spring, the engaging portion extending over an arc that is less than 360 degrees, the actuator having an electromagnet, which is mounted coaxially about the driving member, and an armature that is axially movable between a first position and a second position, wherein the driven member includes a carrier to which the engaging portion of the wrap spring is rotatably coupled; wherein the wrap spring is configured to transmit rotary power between the driving member and the driven member when the electromagnet is not operated and the armature is in the first position; wherein the driving member is a shaft having an input portion, which is adapted to receive rotary power, and a power transferring portion, the power transferring portion defining the clutch surface; and wherein the clutch assembly further comprises an actuator housing and a bearing assembly, the electromagnet being mounted on the actuator housing, the bearing assembly being mounted to the actuator housing and the input portion and being the sole means for supporting the driving member for rotation relative to the actuator housing, the bearing assembly being disposed at a location that is spaced apart from the power transferring portion axially along a rotational axis of the driving member.