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US 2017/0254355 A1Published application
Transmission Shaft and Method for Producing Same
AssigneeBD Invent
InventorBenoît Boveroux
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AssigneeBD Invent
InventorBenoît Boveroux
Estimating the term…
The invention relates to a method for producing a transmission shaft (1) comprising a body (2) made from composite and a coupling piece (3) at one end of the body (2), said coupling piece (3) being hollow and having splines (4) on the inner surface thereof, the base (6) of the splines (4) delimiting the perimeter of a circle of diameter D2 and the head (5) of the splines (4) delimiting the perimeter of a circle of diameter D1, characterized in that said method comprises the successive steps of:—providing a mandrel (10) having an expandable part (12) and a non-expandable part (11);—producing the body (2) by winding pre-impregnated fibre filaments around the mandrel (10);—positioning the coupling piece (3) around the body (2) on the expandable part (12) of the mandrel;—expansion of the expandable part (12) of the mandrel (10) in order to fill the base (6) of the splines (4) with the impregnated fibres of the body (2);—curing the body (2) provided with the coupling piece (3).
A method for producing a transmission shaft (1) comprising a composite body (2) and a coupling part (3) at one end of the body (2), said coupling part (3) being hollow and having splines (4) on the inner surface thereof, the base (6) of the splines (4) delimiting the perimeter of a circle of diameter D2 and the head (5) of the splines (4) delimiting the perimeter of a circle of diameter D1,
A transmission shaft (1) having a composite body (2) and a hollow coupling part (3) positioned about the body (2) at one of the ends of same, the inner surface of said coupling part (3) having splines (4), said composite body (2) filling the splines (4) entirely such as to ensure contact at every point between the body (2) and the splines (4), leaving no interstices, characterized in that the splines (4) extend parallel to the longitudinal axis of the body (2) to optimize torsional load bearing.
A hollow coupling part (3) having splines (4) on the inner surface of same that extend along the entire length of the coupling part (3) and parallel to the longitudinal axis of said part (3).
Dependencies are inferred from the claim text.