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Spring strut arrangement for wheel suspensions of motor vehicles

A technology of wheel suspension and motor vehicle, applied in the direction of vehicle spring, spring, suspension, etc., can solve the problems of large lead screw diameter, unfavorable lead screw rotational inertia, etc., and achieve reduction in radial size, weight, and reduction. The effect of structural space

Inactive Publication Date: 2010-11-24
AUDI AG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this results in a larger screw diameter, which disadvantageously increases the moment of inertia of the screw

Method used

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  • Spring strut arrangement for wheel suspensions of motor vehicles
  • Spring strut arrangement for wheel suspensions of motor vehicles
  • Spring strut arrangement for wheel suspensions of motor vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] according to figure 1 The spring strut assembly 10 mainly has a telescopic buffer 12 , a support spring 14 , an auxiliary spring 16 and an electric actuator 18 .

[0035] The upper end of the spring strut arrangement 10 is articulated via a rubber-elastic annular damper bearing 20 to a bodywork 22 (shown only in simplified form) of the motor vehicle. The lower end of the spring strut assembly 10 is hinged to a wheel suspension structural component, such as a pull rod or a wheel hub bracket, through a strut 24 and a rubber-metal sleeve hinge structure 26 .

[0036] The supporting spring 14 and the auxiliary spring 16 are designed as helical compression springs (figure ) and are supported via spring washers 28 , 30 on the strut 24 and the vehicle body 22 . Between the supporting spring 14 and the auxiliary spring 16, an adjusting spring seat 34 which can be axially displaced by the adjusting transmission mechanism 32 is arranged, and the supporting spring 14 and the auxi...

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Abstract

The invention relates to a spring strut arrangement for wheel suspensions of motor vehicles formed of a telescoping shock absorber (12), a suspension spring element (14) preferably designed as a helical compression spring, and a storage spring element (16) preferably designed as a helical coil spring, wherein the spring elements (14, 16) are supported by spring caps (28, 30) on the body (22) of the motor vehicle and on a wheel suspension element (24), and third spring cap (34) located therebetween is displaceably guided relative to the body (22) along the longitudinal axis of the shock absorber by means of an electrically driven positioning drive (32) disposed within the spring elements (14, 16), wherein the positioning drive (32) comprises a positioning spindle (36) rotatably supported about the shock absorber and a positioning nut (40) connected to the displaceable spring cap (34). According to the invention, the shock absorber (12) is disposed on the body (22) of the motor vehicle with the damping tube (46) upward, and the positioning spindle (36) is rotatably supported on the damping tube (46).

Description

technical field [0001] The invention relates to a spring strut arrangement / damping strut arrangement for a wheel suspension arrangement of a motor vehicle according to the preamble of claim 1 . Background technique [0002] With regard to active dynamic height adjustment of vehicles, various hydraulic, hydraulic / pneumatic and purely electric systems with fully electric actuators are known. An "active" spring strut assembly suitable for this height adjustment has a support spring and a secondary spring separated by an adjustment spring retainer. The adjustment spring retainer is acted upon by an adjustment force during the height adjustment. That is to say, the adjusting spring washer is subjected to an axial displacement specified by the control device as required, so that an adjusting force is finally generated on the wheel. The raising and lowering movement of the adjusting spring retainer is realized almost exclusively by means of a ball screw mechanism, in which the ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60G17/02F16F9/54
CPCF16F1/121B60G17/021B60G2204/124F16F9/56B60G2204/12422B60G15/068B60G2500/30B60G2202/312F16F3/04
Inventor W·米歇尔
Owner AUDI AG
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