BALL SCREW DRIVE OF AN ELECTROMECHANICAL POWER STEERING DEVICE WITH DEFLECTING BODIES FOR A BALL RETURN
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Abstract
An electromechanical power steering device may include a servomotor that drives an axially movable component via a ball nut mounted in a bearing such that the ball nut can be rotated about a longitudinal axis in a housing. The ball nut may be engaged with a threaded spindle configured on the axially movable component. The ball nut may include a ball screw on its inner side for balls to roll on, and an external ball return means that connects a start of the ball screw to an end of the ball screw to make endless circulation of the balls possible. A return channel of the ball return means may be formed by way of a deflecting body and a pulley wheel.
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Citations
30 Claims
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1-15. -15. (canceled)
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16. An electromechanical power steering device for a motor vehicle comprising:
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a servomotor that drives an axially movable component via a ball nut that is mounted in a bearing such that the ball nut is rotatable about a longitudinal axis in a housing, wherein the ball nut is engaged with a threaded spindle configured on the axially movable component, wherein an inner side of the ball nut includes a ball screw for balls to roll on, wherein an external ball return means of the ball nut connects a start of the ball screw to an end of the ball screw to enable endless circulation of the balls; a pulley wheel; and a deflecting body, wherein a return channel of the external ball return means is formed by way of the deflecting body and the pulley wheel. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification