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Ball return with fastening sleeve for axial mounting

A technology of return device and ball, applied in the direction of transmission, steering mechanism, transportation and packaging, etc., can solve the jamming, part of the pulley may reach between the main body and the deflector, prevent the ball nut from rotating, hinder, etc. question

Active Publication Date: 2021-02-02
THYSSENKRUPP PRESTA AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of fastening the deflector directly to the toothed pulley is that if the toothed belt jams, part of the pulley may get between the body and the deflector and impede or prevent the ball nut from turning

Method used

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  • Ball return with fastening sleeve for axial mounting
  • Ball return with fastening sleeve for axial mounting
  • Ball return with fastening sleeve for axial mounting

Examples

Experimental program
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Effect test

Embodiment Construction

[0024] exist figure 1 In , an electromechanical motor vehicle steering system 1 is schematically shown having a steering wheel 2 coupled for common rotation to an upper steering shaft 3 and a lower steering shaft 4 . The lower steering shaft 4 is connected to a pinion 5 for common rotation. The pinion 5 meshes with the toothed segment of the rack 6 in a known manner. The rack 6 is mounted in the steering housing in such a way that it can move in the direction of its longitudinal axis. At its free end, the toothed rack 6 is connected to a steering rod 7 via a ball joint (not shown). The steering rod 7 is itself connected in a known manner to steered wheels 8 of the motor vehicle via a steering knuckle. Rotation of the steering wheel 2 through the connection of the steering shafts 3 , 4 and the pinion 5 leads to a longitudinal movement of the rack 6 and thus to a pivoting of the steering wheel 8 . On the outside of the rack 6 there is provided a ball screw thread 9 as part o...

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PUM

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Abstract

The invention relates to a power steering system (1), in particular for a motor vehicle, having a servo motor (14) which drives an axially movable a rack (6) with a ball nut (11) mounted in a bearing enabling it to rotate in the housing, wherein the ball nut (11) engages a threaded shaft (9) constructed on the rack (6), and Inside it has the ball screw thread (17) for the balls (18) to roll; the outer ball return (20) connects the start of the ball screw thread (17) to the ball screw The end of the thread (17) to allow the circular circulation of the ball (18); and the deflector (16) and the sleeve (15), wherein the return channel (20') of the ball return device (20) is controlled by the deflector ( 16) and sleeve (15) form.

Description

technical field [0001] The present invention relates to power steering systems, and to bushings for such power steering systems. Background technique [0002] Ball screw mechanisms are used to convert rotary motion into longitudinal motion or vice versa. In a steering system of a motor vehicle with an electric motor servo drive acting via a ball screw mechanism, the toothed rack has a section designed as a threaded shaft. A ball nut is arranged on the threaded shaft, and the ball nut is rotatably mounted on the threaded shaft by means of balls. A servo motor drives a ball nut via a gear mechanism to provide motor support for the longitudinal movement of the rack. A toothed rack with a section for the threaded shaft is accommodated in the housing. The ball nut is rotatably mounted in the housing by means of rolling bearings. A rolling bearing has an outer ring and an inner ring. [0003] DE 10 2010 054 134 discloses a plastic sleeve which slides over a ball nut to radial...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/04F16H25/22
CPCB62D5/0448F16H25/2214F16H25/2223
Inventor 安德拉斯·伊莱什沃尔弗拉姆·赖瑟
Owner THYSSENKRUPP PRESTA AG
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