Torque transmission assembly

Claim 1

In a device for transferring torque from a driving part to a driven part, especially from a rotary constant velocity joint of a driven motor vehicle wheel onto a wheel hub provided for the purpose of fixing said wheel, said two parts defining an axis of rotation and being at least partially coaxial relative to each other with one of said parts being provided with circumferentially spaced teeth extending parallel to said axis of the two parts and with the other of said parts being provided with a widening area in the shape of a truncated cone shell equipped with teeth arranged on said shell surface which extend at an angle relative to said axis of the two parts whose imagined extensions intersect the axis at a point, said device further including a ring having an approximately triangular cross-sectional configuration being provided between said two sets of teeth, said ring having a bore arranged coaxially with said axis and an outer surface forming a triangular area which has been provided with teeth which correspond to the teeth of the other two parts and tightening screw means threadedly engaged so as to be pressed against said ring, the improvement comprising: that said outer surface of said ring is equipped with outer teeth which engage with said teeth on said shell surface of said truncated cone shell; that said bore of said ring is provided with inner teeth which engage with said teeth extending parallel to said axis; that said outer surface of said ring encloses with respect to said bore an acute angle of approximately 30°; that between said teeth extending parallel to said axis and said inner teeth in said bore of said ring engaging therewith there is provided a radial clearance of between 0.05 and 0.2 mm when said tightening screw means is not tightened so as to be pressed against said ring; and said ring is elastically and plastically deformed when said tightening screw means is in the tightened state.