DE102014015092A1 - Wheel suspension for a wheel of an axle of a motor vehicle - Google Patents

Abstract

The invention relates to a wheel suspension (10) for a wheel of an axle of a motor vehicle, in which a wheel carrier (12) is mounted on the body side via at least one upper transverse link (14a, 14b). The invention is characterized in that, on the body side, the at least one upper transverse link (14a, 14b) is mounted on the housing (20) in the vehicle longitudinal direction (x) in a displaceably mounted receptacle (22).

Description

The invention relates to a suspension for a wheel of an axle of a motor vehicle specified in the preamble of claim 1. Art.

Axle systems are known to have a number of characteristics. One of them is to keep beats and related suggestions away from the driver as well as possible when crossing obstacles. For this, the axle must have a certain longitudinal compliance and be as well acoustically decoupled.

The EP 1 616 729 B1 discloses a hydraulically damped bearing for a front axle for receiving wishbones, which is designed to be stiff in the vehicle longitudinal direction and designed to be soft in the radial direction and hydraulically damped.

From the DE 10 2006 040 837 A1 and EP 1 123 821 B1 is an acoustic decoupling of a rear axle known.

The invention has the object of developing a suspension for a wheel of an axle of a motor vehicle such that the wheel movement in the vehicle longitudinal direction is considered selectively influenced.

This object is achieved by the characterizing features of claim 1 in conjunction with its generic features.

The dependent claims form advantageous developments of the invention.

In a known manner, in the suspension for a wheel, an axle of a motor vehicle, a wheel carrier is mounted on the body side via at least one upper control arm.

According to the invention, at least one upper wishbone is mounted on the body side by means of a receptacle which is displaceably mounted on the body so as to be displaceable in the vehicle longitudinal direction (x-direction).

The inventive design, namely the body-side linkage of the upper arm in a relative to the body in the vehicle longitudinal direction (x-direction) resiliently displaceably mounted recording is now ensured in an advantageous manner that under the influence of a longitudinal force of the Radaufstandspunkt undergoes the least possible movement, while the wheel center can perform a targeted movement in the vehicle longitudinal direction (x-direction).

Due to the yielding displaceably mounted design of the receptacle in addition to the implementation of the desired longitudinal compliance and an acoustic decoupling of the axle is guaranteed to shell. The wishbones can be stored in the receptacle by means of ball bearings or rubber bearings.

Preferably, the recording is guided by means of a linear guide in the vehicle longitudinal direction (x-direction) displaceable on the body. This ensures that only the movement desired in the vehicle longitudinal direction is executable by means of the receptacle.

According to a particularly advantageous embodiment of the invention, the receptacle viewed in the vehicle longitudinal direction (x-direction) has a front and rear elastomeric bearing. About the two elastomeric bearings is considered in a simple and cost-effective manner in the vehicle longitudinal direction (x-direction) considered yielding storage of recording.

Preferably, in this case, the front and rear elastomeric bearings in the tensile and compressive direction, d. H. in positive and negative x-direction, different stiffnesses / characteristic curves. This has the effect that the storage in the lower arm level can be made stiffer, which in turn has a positive effect on the Radträgerverdrehung and the camber stiffness of the axle.

In order to ensure a weight-optimized construction of the receptacle, this is preferably made of a lightweight material, in particular an aluminum material.

Another particularly advantageous embodiment of the invention provides that the linear guide is made of a fiber-plastic composite material. In the present case, a fiber-plastic composite material is understood in particular to mean a carbon-fiber-reinforced plastic (CFRP), glass-fiber-reinforced plastic (GRP) and aramid fiber-reinforced plastic (AFK). The design of the linear guide made of a fiber-plastic composite material has the positive effect that in addition to a low friction good damping and acoustic decoupling is ensured.

The positioning of the mount in vehicle vertical direction (z-direction) depends on the axis concept and the package. Thus, the receptacle, if the inner attachment points of the upper wishbones are located on the wheel carrier within the rim, be mounted on a body longitudinal member. Alternatively, if the inner attachment points of the upper wishbones above the wheel located, the recording can also be accommodated as usual in the strut mount.

Further advantages, features and applications of the present invention will become apparent from the following description taken in conjunction with the embodiment shown in the drawing.

In the drawing:

1 a schematic side view of the suspension of the invention;

2 a representation of the receptacle for the upper control arm, and

3 an example of a characteristic curve of the two elastomeric bearings.

1 shows a total with the reference numeral 10 designated wheel suspension for a wheel of an axle of a motor vehicle.

As 1 it can be seen is a wheel carrier 12 over two upper wishbones 14a . 14b and two lower handlebars 16a . 16b stored on the body side. The body-side mounting of the upper wishbones 14a . 14b or the lower handlebars 16a . 16b is also referred to as the upper transverse link level 14 or lower transverse link level 16 designated. With the reference number 18 is the wheel center point.

The wishbones 14a . 14b the upper transverse link level 14 are on a in the vehicle longitudinal direction (x-direction) on the body 20 yielding displaceably mounted recording 22 stored. For weight reasons, the recording 22 made of a lightweight material.

For sliding storage, the recording 22 one here in total with the reference number 24 designated linear guide on, cf. 2 , In the present case is the linear guide 24 made of a GRP material. This ensures low friction, good damping and an acoustic end coupling.

As 2 can be seen further, the recording shows 22 also in the vehicle longitudinal direction (x-direction) considered a front elastomeric bearing 26 and a rear elastomeric bearing 28 , About the two elastomeric bearings 26 . 28 the longitudinal rigidity / compliance is realized. In the present case, the two elastomeric bearings 26 . 28 in the tension and compression direction different identifiers, cf. 3 ,

For storage of the control arms 14a . 14b shows the recording 22 two warehouse consoles 30a . 30b , The wishbones 14a . 14b can be stored by means of ball or rubber bearings.

Due to the inventive design of the suspension 10 It is now possible in an advantageous manner that when a longitudinal force on the tire, the wheel center 18 performs a targeted movement in the vehicle longitudinal direction (x-direction), while the position of the wheel contact point remains virtually unchanged.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 1616729 B1 [0003]
• DE 102006040837 A1 [0004]
• EP 1123821 B1 [0004]

Claims (8)

Wheel suspension ( 10 ) for a wheel of an axle of a motor vehicle, in which a wheel carrier ( 12 ) via at least one upper wishbone ( 14a . 14b ) is mounted on the body side, characterized in that the body side of at least one upper wishbone ( 14a . 14b ) over a vehicle in the longitudinal direction (x) on the body ( 20 ) resiliently displaceably mounted recording ( 22 ) is stored. Wheel suspension according to claim 1, characterized in that the receptacle ( 22 ) by means of a linear guide ( 24 ) in the vehicle longitudinal direction (x) displaceable on the body ( 22 ) is guided. Wheel suspension according to claim 1, characterized in that the receptacle ( 22 ) is made of a lightweight material. Wheel suspension according to claims 1 to 3, characterized in that the receptacle ( 22 ) in the vehicle longitudinal direction (x) considered a front and rear elastomeric bearing ( 26 . 28 ) having. Wheel suspension according to claim 4, characterized in that the front and rear elastomeric bearings ( 26 . 28 ) viewed in the vehicle longitudinal direction (x) have different stiffnesses. Wheel suspension according to one of the preceding claims, characterized in that the receptacle ( 22 ) is slidably mounted on the body. Wheel suspension according to claims 1 to 5, characterized in that the receptacle ( 22 ) is slidably mounted on a strut mount. Wheel suspension according to one of claims 2 to 7, characterized in that the linear guide ( 24 ) is made of a fiber-plastic composite material.

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