192 clutches and power-stop control – Clutches – Axially engaging
Patent
1997-12-18
2000-08-29
Bonck, Rodney H.
192 clutches and power-stop control
Clutches
Axially engaging
192111A, F16D 1375
Patent
active
061094129
ABSTRACT:
An adjustment mechanism for a frictional clutch for a motor vehicle includes a pressure plate, a first annular cam member, a second annular cam member, a cam spring, a cam control finger, an anti-rotation feature, and a control finger drag spring. The pressure plate has an axis of rotation and an engagement surface substantially normal to the axis of rotation. The first annular cam member is concentric with the axis of rotation and has a plurality of first ramped cam surfaces. The first annular cam member is rotatively fixed with respect to the pressure plate. The second annular cam member is rotatable relative to the first annular cam member and has a plurality of second ramped cam surfaces in engagement with the first ramped cam surfaces. The second annular cam member, together with the first annular cam member, define an effective pressure plate thickness. The second annular cam member also has an engagement step at its outer periphery. The cam spring is functionally disposed between the cam members and rotatively biases the cam members toward an increased cam height. The cam control finger is slidably disposed within an aperture in the pressure plate. The cam control finger has a shank portion which is disposed in the aperture in the pressure plate and is axially oriented for axial slidable displacements relative to the pressure plate. The cam control finger also includes an engaging portion radially extending from the shank portion and in engagement with the second annular cam member. The anti-rotation feature engages the finger thereby preventing rotation of the finger relative to the pressure plate. The control finger drag spring biases the finger into engagement with the side of the aperture and induces a frictional drag force resisting axial displacement of the control finger.
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Cole Christopher D.
Gochenour Daniel V.
Jennings Mark
Kummer Martin E.
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