Decoupler assembly

A decoupler assembly comprising:

• a hub having a rotational axis, the hub comprising a plurality of radially extending tabs, each of the tabs having a leading edge and a trailing edge;
• a drive member disposed about the hub for rotation about the rotational axis, the drive member having an inner clutch surface;
• a clutch coupling the hub and the drive member, the clutch comprising a carrier, a rim, a plurality of arcuate compression springs, a wrap spring and a non-metallic bumper, the carrier being received between the hub and the drive member, the carrier including a carrier member and an insert, the carrier member defining a recess into which the insert is received, the insert comprising a clutch stop, the rim being fixed to the carrier and configured to abut an end of the wrap spring in at least two locations, each of the arcuate compression springs being mounted inside the carrier so as to be positioned axially along the rotational axis entirely between opposite axial ends of the wrap spring and engaged against an associated one of the leading edges of tabs of the hub, the wrap spring comprising a proximal end and a plurality of helical coils, the proximal end having an end face that is abutted against the clutch stop, the helical coils being engaged to the inner clutch surface of the drive member, the non-metallic bumper being coupled to the carrier and wherein contact between one of the trailing edges and the non-metallic bumper limits relative rotation between the carrier and the hub in a predetermined rotational direction;
• and
• a lubricant disposed between the carrier and the arcuate compression springs.

A decoupler assembly comprising:

• a hub having a rotational axis;
• a drive member disposed about the hub for rotation about the rotational axis, the drive member having an inner clutch surface;
• and
• a clutch coupling the hub and the drive member, the clutch comprising a carrier, a plurality of arcuate springs and a wrap spring, wherein the arcuate springs are disposed within the carrier so as to be positioned axially along the rotational axis entirely between opposite axial ends of the wrap spring, the arcuate springs deflecting in response to transmission of torque between the hub and the carrier when the torque has a magnitude that is within a predetermined range, the wrap spring being rotatably coupled to the carrier and having a plurality of coils that are engaged to the inner clutch surface;
• wherein the decoupler assembly is characterized by at least one of the following:
• the decoupler assembly includes a lubricant received between the carrier and the arcuate springs;
• the clutch includes a clip that is coupled to the carrier, the clip abutting an axial end of the wrap spring such that rotary power is transmitted between the carrier and the wrap spring through an interface at which the clip and the axial end abut one another;
• the carrier comprises first and second shell members that are fixedly coupled to one another via rivets, fasteners or combinations thereof;
• the clutch includes a non-metallic bumper that limits rotation of the hub relative to the carrier;
• and
• the carrier includes a rim element that is fixed to the carrier and which contacts the inner clutch surface during operation of the carrier.