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US 4,679,679 AGranted
Clutch driven plate assembly with anti-backlash damping
AssigneeBorg-Warner Automotive, Inc.
InventorsThaddeus Lech, Jr., Bruce A. Mullard
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AssigneeBorg-Warner Automotive, Inc.
InventorsThaddeus Lech, Jr., Bruce A. Mullard
Estimating the term…
A clutch driven plate assembly for use in an automotive vehicle and having anti-backlash damping adapted to dissipate the irregular impulses of the vehicle internal combustion or diesel engine with the transmission in neutral, the clutch engaged and the engine at idle rpm. The assembly includes a clutch plate, a spring retainer plate secured to the clutch plate, and a hub assembly comprising an inner hub in operative engagement with the transmission input shaft and an outer hub having an integral hub flange with spring windows coinciding with the spring windows of the clutch and spring retainer plates. An intermeshing backlash spline loosely connects said inner and outer hubs to allow limited rlative rotation therebetween and means yieldably resisting relative rotation of said hubs includes a plurality of circumferentially equally spaced recesses in one hub and a plurality of plungers and compression springs in the other hub with the plungers biased by the springs into engagement with complementary recesses. Rotation of the clutch and spring retainer plates, damper springs and outer hub relative to the inner hub causes the plungers to be cammed out of the recesses against the force of the compression springs.
A clutch driven plate assembly for an automotive vehicle clutch driving a transmission input shaft, including a hub assembly having an inner hub with a barrel splined onto the input shaft and an outer hub having a radial flange, a clutch plate carrying friction facings at the outer periphery thereof, a spring retainer plate secured to the clutch plate to sandwich said outer hub flange therebetween, said plates and outer hub flange having axially aligned sets of circumferentially spaced windows therein, and damper springs received in each set of windows, the improvement comprising intermeshing backlash splines on said inner and outer hubs allowing limited relative rotation therebetween, means yieldable resisting relative rotation between said hubs including at least two radially-biased plungers in one hub and a plurality of camming recesses in said other hub corresponding to the number of plungers, so that rotation of said plates, damper springs and outer hub relative to said inner hub causes said plungers to cam out of said recesses, a first spacer located between said clutch plate and said inner hub and piloting said inner hub central to said outer hub, and anti-rotation tabs on the periphery of said spacer received in notches in said outer hub.
Dependencies are inferred from the claim text.