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US 11,493,118 B2Granted
Ball screw drive
AssigneeSchaeffler Technologies AG & Co. KG
InventorsPhilippe Ott, Raphael Wittmann
Life of this patent
Estimating the term…
Abstract
A ball screw drive includes two screw drive parts (3, 4), namely a lead screw (3) and a nut (4). The ball screw drive also includes a deflection element (6) for the individual deflection of balls (5) is inserted into a recess (7), formed by one of the screw drive parts (3, 4), such that a gap (16) is formed between the base (15) of the recess (7) and the deflection element (6), and such that lateral contact surfaces (17) of the deflection element (6) which are located next to the recess (7) rest on the screw drive part (3, 4).
Claims17
A ball screw comprising:
- two spindle drive parts, the two spindle drive parts being a threaded spindle and a spindle nut;
- a deflection piece for a single deflection of balls, the deflection piece inserted into a depression formed by a first of the two spindle drive parts in such a way that a gap area is formed between a base of the depression and the deflection piece and the deflection piece lies on the first of the two spindle drive parts by lateral contact faces near to the depression,
- wherein the gap area is formed between the base of the depression and a central portion of the deflection piece such that no portion of the deflection piece lies on the base,
- wherein the spindle nut includes a helically winding track for receiving the balls, wherein the deflection piece includes a first deflection lug and a second deflection lug both projecting outside of the depression and away from the depression, a top face of the first deflection lug being shaped differently than a top face of the second deflection lug and including a groove structure formed complementarily to the helically winding track.
1 more element
A ball screw comprising:
- two spindle drive parts, the two spindle drive parts being a threaded spindle and a spindle nut, the threaded spindle including lateral contact faces and a depression recessed away from the lateral contact faces;
- balls radially between the threaded spindle and the spindle nut;
- and
- a deflection piece for deflecting the balls inserted into the depression in such a way that a gap area is formed between a base of the depression and the deflection piece and the deflection piece contacts the lateral contact faces,
- wherein the gap area is formed between the base of the depression and a central portion of the deflection piece such that no portion of the deflection piece lies on the base,
- wherein the spindle nut includes a helically winding track for receiving the balls, wherein the deflection piece includes a first deflection lug and a second deflection lug both projecting outside of the depression and away from the depression, a top face of the first deflection lug being shaped differently than a top face of the second deflection lug and including a groove structure formed complementarily to the helically winding track.
3 more elements
Dependencies are inferred from the claim text.