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US 12,104,679 B2Granted
Ball screw drive and method for operating a ball screw drive
AssigneeSchaeffler Technologies AG & Co. KG
InventorsNicky Heinrich, Sedat Oezdemir, Robert Drechsler
Life of this patent
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Abstract
A ball screw drive, in particular for a parking brake, comprises a threaded spindle, a spindle nut, and rolling bodies, namely balls, which are arranged in a thread turn between the threaded spindle and the spindle nut. Spring elements are arranged in the thread turn between nut-side stops. There is at least one setting of the threaded spindle and the spindle nut in which the balls and the spring elements are arranged in the thread turn with backlash.
Claims20
A ball screw drive, comprising:
- a threaded spindle,
- a spindle nut,
- rolling bodies configured as balls arranged in a thread turn between the threaded spindle and the spindle nut, and
- a first spring element arranged in the thread turn between two nut-side stops,
- wherein in at least one setting of the threaded spindle and the spindle nut, the balls and the first spring element are arranged in the thread turn with backlash.
2 more elements
A method for operating a ball screw drive, comprising:
- arranging balls as rolling bodies in a thread turn formed between a threaded spindle and a spindle nut,
- arranging first and second spring elements in said thread turn, such that starting from a first setting of the ball screw drive, in which the first spring element is tensioned, the ball screw drive via a central position of the threaded spindle and the spindle nut, in which the first and second spring elements are relaxed, is brought out into a second setting, in which the second spring element is tensioned.
A ball screw drive, comprising:
- a threaded spindle,
- a spindle nut,
- a first quantity of rolling bodies arranged in a thread turn between the threaded spindle and the spindle nut, and
- a first spring element and a second spring element arranged in the thread turn between two end stops, and
- in at least one setting of the threaded spindle and the spindle nut, the first quantity of rolling bodies and the first and second spring elements are arranged in the thread turn with backlash.
2 more elements
Dependencies are inferred from the claim text.