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Telescopable steering shaft for motor vehicle

A technology for steering shafts and motor vehicles, which is applied to the steering control, steering column, steering mechanism, etc. installed on the vehicle, and can solve the problems of expensive manufacturing of inner and outer shafts, high tolerance requirements, etc.

Active Publication Date: 2020-01-03
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 solution is that the inner and outer shafts are expensive to manufacture and suffer from high tolerance requirements to ensure smooth, uniform adjustment and predefined crash characteristics

Method used

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  • Telescopable steering shaft for motor vehicle
  • Telescopable steering shaft for motor vehicle
  • Telescopable steering shaft for motor vehicle

Examples

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Embodiment Construction

[0032] figure 1 and 2 A steering column 1 according to the invention with a servo unit 2 and a load unit 3 is shown. Arranged in the servo unit 2 is a steering shaft 4 according to the invention, which consists of an outer shaft 5 and an inner shaft 7 arranged displaceably in the outer shaft 5 in the direction of the rotational axis 6 . A steering wheel (not shown) can be arranged on the steering wheel-side end point 8 of the steering shaft 4 . Due to the axial displaceability of the outer shaft 5 relative to the inner shaft 7 along the axis of rotation 6 , the end point 8 on the steering wheel side and thus the steering wheel (not shown) can be adjusted in the longitudinal direction according to the setting of the driver. .

[0033] The steering shaft 4 is mounted rotatably about an axis of rotation 6 in the servo unit 2 via ball bearings 9 , 10 . Furthermore, the inner shaft 7 is mounted rotatably on or in the load unit 3 via a further ball bearing 11 . The servo unit 2...

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PUM

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Abstract

The invention relates to a telescopable steering shaft (4) for a motor vehicle, comprising an inner shaft (7), which is received in an outer shaft so as to be displaceable coaxially and in the axial direction of the steering shaft (4), wherein the inner shaft (7) and outer shaft (5) have corresponding profiles in cross-section for the transmission of a torque, said steering shaft being provided ina simple manner, unsusceptible to tolerance, with an energy absorption device for a crash situation in that a profile sleeve (22) is fixed between the inner shaft (7) and the outer shaft (5) to either the inner shaft (7) or the outer shaft (6) and in that the other shaft is provided with at least one protrusion (25) protruding into the radial region of the profile sleeve (22), which protrusion deforms the profile sleeve (22) as motion energy is absorbed if, in a crash situation, the outer shaft (5) is slid over the inner shaft (7) over an axial displacement region (27).

Description

technical field [0001] The invention relates to a telescopic steering shaft for a motor vehicle, having an inner shaft coaxially and movably inserted in an outer shaft in the axial direction of the steering shaft, wherein the inner shaft and the outer shaft are in cross section Has a corresponding profile for torque transmission. Background technique [0002] From EP 2 910 451 A1 a steering shaft is known which has an inner shaft which is inserted telescopically into an outer shaft, has an axial adjustment region and an energy absorption region connected thereto. If the inner shaft is pushed into the outer shaft through the axial adjustment region, the inner shaft reaches the energy absorption region, which is characterized in that a higher force is required for the axial movement there. Such forces occur in crash accidents. In the event of a crash, the force transmitted to the steering shaft via the steering wheel will exceed a predetermined force, causing an axial moveme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D1/19
CPCB62D1/192B62D1/185
Inventor 弗洛里安·帕凯尔丹尼斯·波铬曼罗伯特·费尔
Owner THYSSENKRUPP PRESTA AG
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