Patent ID: 6739607
Filing Date: 2004-05-25
Classification: B60G,B62D,F16F

Abstract:
A device for damping pivotal movements of a wheel-supporting pendular arm (12) of a motor vehicle, the device comprising:a housing (16) with a cavity for rotatable support of a swing axle of the pendular arm (12); a plate pack arranged in the housing and comprising a number of coaxially adjoining, annular disk plates (20, 22), which are alternately torsionally fixed but axially moveable in the housing (16) or on the swing axle respectively; a first annular pressure plate (28), torsionally fixed but axially moveable on the swing axle of the pendular arm; a second annular pressure plate (30), torsionally fixed but axially moveable in the housing (16), the two pressure plates (28, 30) having opposing sides with members (32, 34) designed, on rotation of the first pressure plate (28), to produce an axial movement of the pressure plates (28, 30) in relation to one another; a compression spring unit (42, 44), designed to exert a compressive force on the pressure plates and the disk plates; an axially moveable piston (46) arranged between the compression spring unit (42, 44) and the pressure plates (28, 30); and a restrictor element (50, 62), which allows a hydraulic pressure medium to flow from one side of the piston (46) to the other, wherein, the second pressure plate (30) comprises an outer ring (30b), which is torsionally fixed to the housing (16), and an inner ring (30a), which is connected so that it is torsionally fixed but axially moveable to the outer ring (30b) by way of spherical elements (40), spaced in a circumferential direction and supported in axial, complementary grooves (36, 38) in the outer and inner ring (30b and 30a).