Wheel suspension for motor vehicles

A motor vehicle and suspension technology, applied in the field of motor vehicle wheel suspension structure, can solve problems such as damage to the ball screw mechanism, filter blockage, screw/nut unit corrosion, etc., and achieve the effect of reliable pressure balance

Inactive Publication Date: 2011-09-28
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that, depending on the situation of use, i.e. the environment in which the vehicle is moving, the filter becomes clogged sooner or later
If free air flow is no longer provided, the corrugated sheath is the first to shrink or even rupture
And its biggest disadvantage is that the filter cannot filter out finer particles (smaller than sand)
The grease for the ball screw mechanism must never be contaminated, as even the smallest particles can change the consistency / firmness of the grease to such an extent that the ball screw mechanism can be damaged
Additionally, the filter is not resistant to moisture, condensation, or splashing water
Moisture will corrode the rolling bearings and the screw / nut unit and damage the ball screw mechanism

Method used

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  • Wheel suspension for motor vehicles
  • Wheel suspension for motor vehicles
  • Wheel suspension for motor vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] figure 1 Schematically shows an active spring strut assembly 10 for a motor vehicle wheel suspension structure, the spring strut assembly is mainly composed of a telescopic buffer 12, a support spring 14, an energy storage spring 16, an upper shock absorber support 18 and The lower damper support 20 constitutes.

[0023] The height adjustment and / or roll stability of the motor vehicle body is controlled by means of a height adjustment device 22 , which is driven by an electric motor 24 .

[0024] The damper 12 is fastened on the lower spring washer 26 by its downwardly protruding piston rod 12a. The spring retainer 26 and the shock absorber support 20 form a composite part which is articulated or fastened in a known manner to a wheel guide element of a motor vehicle wheel suspension, for example a control lever or a wheel bearing. Furthermore, a rubber-elastic stop damper 17 is provided as an additional spring on the spring washer 26 .

[0025] In contrast, the dampe...

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PUM

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Abstract

The invention relates to a wheel suspension for motor vehicles, having level adjustment of the chassis, having a height adjusting device (22; 80) disposed between a wheel guide element and the bodywork of the motor vehicle, said device being particularly designed as a ball screw drive driven by an electric motor and acting on an adjusting spring seat (34) of at least one suspension spring (14), wherein the height adjusting device (22; 80) is outwardly sealed by at least one enclosing elastic rubber bellows (50, 52; 100). In order to prevent deformation of the at least one bellows and entry of dirt or moisture into the height adjusting device, the invention proposes that the interior (54, 56; 102) enclosed by the bellows (50, 52; 100) is connected directly or indirectly to an auxiliary volume (66; 108) positioned outside of the bellows (50, 52; 100).

Description

technical field [0001] The invention relates to a motor vehicle wheel suspension with body height adjustment according to the preamble of claim 1 . Background technique [0002] It is known from DE 30 37 179 to protect the piston rod from dirt and moisture by means of an outwardly sealing, rubber-elastic corrugated sheath / bellows in a telescopic damper arrangement of a motor vehicle wheel suspension. Lesions in which the inner cavity of the corrugated sheath is connected to an additional volume. In this case, the additional volume is formed by a cylinder liner arranged around the damper sleeve of the damper, possibly formed directly on the bellows sheath. [0003] In the damper arrangement according to DE 725 687, in order to equalize the pressure fluctuations in the bellows of two adjacent telescopic dampers hinged in the housing, the two bellows are connected by means of a housing connection together. [0004] A damper arrangement is known from DE 102 00 608 in which th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60G15/06B60G17/015B60G17/02F16F9/38
CPCB60G15/065B60G2204/40B60G2202/42B60G17/021F16F9/049B60G2500/30B60G2202/312B60G2202/32
Inventor W 迈克尔
Owner AUDI AG
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