Electromagentic compressor clutch with combined torque cushion a

Details Electromagentic compressor clutch with combined torque cushion a Electromagentic compressor clutch with combined torque cushion a

1996-03-22

1997-07-01

Pitts, Andrea L.

192 clutches and power-stop control

Clutches

Operators

19211323, 192209, F16D 2706

Patent

active

056427980

ABSTRACT:
An electromagnetic clutch for an automotive air conditioning compressor supports the armature co axial to, and facing, a pulley friction disk with a novel support structure that self cools the armature, as well as providing a torque cushion. A multi lobed drive plate is welded to a compressor shaft mounted hub, while a similarly shaped armature support disk turns freely on the outer surface of the hub, supporting armature rings on spring fingers co axial and parallel to a belt driven pulley friction disk. The lobes of the drive plate and support disk are aligned in three pairs, with a significant axial gap between, and extend radially over the entire outer face of the armature rings, while leaving most of the outer face exposed to the ambient air. A layer of resilient elastomer is bonded between the aligned lobes of the drive plate and support disk, holding them together, limiting the degree to which the support disk can twist on the hub, and cushioning the shock of initial engagement. The elastomer layer is thick enough that the leading edges thereof disturb ambient air as the rotate, drawing air in and over the armature rings in fan like fashion to cool them.

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