Electrically length-adjustable steering column for a motor vehicle

A technology for motor vehicles and steering columns, applied in power steering mechanism, steering control, steering mechanism, etc., can solve the problems of installation space limitation, structural limitation, weakened stability, etc., and achieve the effect of reducing noise, high strength and rigidity

Active Publication Date: 2018-09-28
THYSSENKRUPP PRESTA AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this design is that the outer sleeve must be provided with an opening for the worm drive to pass through and is therefore weakened in terms of its stability
Furthermore, the installation space between the outer side of the inner sleeve and the inner side of the outer sleeve is restricted, which means that there are structural restrictions on the tooth configuration of the inner sleeve

Method used

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  • Electrically length-adjustable steering column for a motor vehicle
  • Electrically length-adjustable steering column for a motor vehicle
  • Electrically length-adjustable steering column for a motor vehicle

Examples

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Embodiment Construction

[0029] as in Figure 1 to Figure 5 As can be seen in , an electrically adjustable steering column 1 for a motor vehicle according to the invention has a steering shaft 2 which is rotatable about its axis of rotation 3 and which has two main shaft parts 4, 27, The two main shaft parts 4, 27 are rotatably connected to each other, but telescopically displaceable relative to each other. The upper shaft part 4 carrying the steering wheel of the motor vehicle, not shown, is axially displaceable relative to the shaft part 27 . The lower shaft portion 27 is provided in an axially fixed manner. The upper shaft portion 4 is rotatably mounted in the bushing 5 . The bushing 5 itself is axially displaceably mounted in the guide box 7 so that the bushing 5 together with the upper shaft part 4 can be adjusted in the axial direction relative to the guide box 7, wherein, not shown The steering wheel is axially adjustable.

[0030] Axial adjustment takes place by means of an electric motor ...

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Abstract

The invention relates to an adjustable steering column (1) for a motor vehicle, comprising a rotatable steering shaft (2), which has a shaft part (4) that can be moved axially along the axis of rotation (3) of the steering shaft and that is rotatably mounted in a jacket tube (5), which is mounted for axial sliding in a guide box (7) retained on a retaining part (6) fixed to the vehicle body and which can be adjusted by means of an electric motor (8). Said adjustable steering column is improved with regard to a small installation space of the electrical adjustment system in conjunction with high strength of the steering column in that a gear rack (9, 10, 29) is attached to the outer face (26) of the jacket tube (5) and that the electric motor (8) is fastened to the guide box (7) and drivesa worm gear (11), which protrudes through an opening (12) of the guide box (7) toward the jacket tube (5) and meshes with the gear rack (9, 10, 29).

Description

technical field [0001] The invention relates to an adjustable steering column for a motor vehicle, the steering column comprising a rotatable steering shaft having a shaft portion axially displaceable along the axis of rotation of the steering shaft, the shaft portion being rotatable installed in a bushing in an axially slidable manner and displaceable by means of an electric motor, the guide box is held on a holding portion fixed to the vehicle body. Background technique [0002] Such an adjustable steering column is known, for example, from WO 2014 / 117800 A1. Steering columns known in the prior art have a plurality of toothed racks attached along the circumferential surface of the sleeve, these toothed racks being surrounded by nuts. The nut is connected to an electric motor by means of a toothed belt that can turn the nut and thus displace the sleeve. A disadvantage of this design is that multiple racks are required. [0003] A longitudinally adjustable steering column...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D1/181
CPCB62D1/181B62D1/192B62D1/185B62D1/195B62D5/0409B62D5/0454
Inventor 丹尼尔·克罗伊茨斯特凡·扎瓦尔
Owner THYSSENKRUPP PRESTA AG
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