DE102014017979A1 - Vibration damper for a motor vehicle - Google Patents

Abstract

The invention relates to a vibration damper (10) for a motor vehicle, with a C-shaped shock absorber (14) for connection to a lower link level. The invention is characterized in that in the damper stilt (14), an actuator (16) is integrated for driving an actuating mechanism.

Description

The invention relates to a vibration damper for a motor vehicle according to the specified in the preamble of claim 1. Art.

As is known, the connection of a vibration damper to the suspension arms and the construction must satisfy various space constraints. In particular, on the front axle of the vibration damper must be performed mostly on the drive shaft. An often used solution is to place the damper just above the drive shaft and to realize the connection to the lower arm level via a C-shaped damper. Such a C-shaped executed Dämpferstelze, hereinafter also referred to as cranked Dämpferstelze, z. B. from the DE 10 2005 009 864 B4 known.

Another space-limiting development is the increased use of actuators in the chassis, for example, to initiate vertically acting forces in the chassis or to influence them. Depending on the embodiment, the suspension actuators require a relatively large amount of space. If the suspension actuator is to be placed in the vicinity of the damper in order to influence the damping forces, the suspension actuator may collide with components already present in the suspension, such as, for example. B. the damper stilts.

The invention has the object of providing a vibration damper for a motor vehicle according to the type specified in the preamble of claim 1 such that a space-saving arrangement of the C-shaped damper stalk and an actuator, the z. B. is provided for a realization of an active chassis, is made possible.

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, the vibration damper for a motor vehicle has a C-shaped damper support for connection to a lower arm level.

According to the invention, an actuator for driving an actuating mechanism is integrated into the C-shaped damper stilt.

The inventive integration of the actuator in the Dämpferstelze or the merger of the components actuator and Dämpferstelze is advantageously ensured that the actuator requires less additional space in the vicinity of the damper, so that reduces the space requirement in the chassis, thus ensuring a space-saving arrangement is. In Achsbauweisen, in which more space is available, the space obtained by the inventive combination of actuator and Dämpferstelze space for defusing other conflicting goals can be used.

In the present invention to be integrated in the Dämpferstelze actuator, it may, for. B. act to an electric, pneumatic or hydraulic actuator.

For this purpose, the damper stilts preferably have two separate stilt components and the actuator is arranged between the two stilt components. Due to the design of the damper stilts from separate stilt components and the arrangement of the actuator between the two components, a simple, cost-effective installation and thus the integration of the actuator is ensured in the damper stalk in an advantageous manner.

According to a first embodiment, in this case the actuator is arranged in the longitudinal direction of the vibration damper viewed between the two stilt components, d. H. the actuator is arranged between an upper and a lower stilt component, wherein the actuator has a housing which is dimensioned such that it can absorb the forces acting on the shock absorber during rebounding / rebounding. By arranging the actuator between an upper and a lower stilt component, a particularly space-saving arrangement is ensured.

According to another embodiment of the invention, the actuator is arranged in the direction perpendicular to the longitudinal direction of the vibration damper viewed between the two Stelzenbauteilen, ie the Dämpferstelze has an inner Stelzenbauteil and an outer Stelzenbauteil, between which the actuator is arranged. Since according to this embodiment, the housing of the actuator viewed in the longitudinal direction of the vibration damper is enclosed by the two Stelzenbauteilen, the forces occurring during compression / rebound are passed by the damper stilts on the actuator, so that a less rigid, lighter and thus more cost-effective design of the housing is possible. Another advantage of this embodiment is that the assembly and assembly of the actuator is facilitated, namely first assembly of the actuator in an upstream operation, then attachment of the actuator to the inner stilt member and finally attachment of the outer stilt member on inner stilt component, z. B. by means of a screw connection.

Further advantages, features and applications of the present invention will become apparent from the following description taken in conjunction with the embodiments illustrated in the drawings.

In the drawing:

1 a partial view of a vibration damper for a motor vehicle in a front and side view with a C-shaped damper stilts according to the prior art;

2 a partial view of a first embodiment of a vibration damper according to the invention in a front and side view, and

3 a partial view of a second embodiment of a vibration damper according to the invention in a front and side view.

1 shows in an incomplete representation a total with the reference numeral 10 designated vibration damper for the front axle of a motor vehicle in a front and side view.

The vibration damper 10 includes a fluid or gas filled damper tube 12 in which, in a known manner, a piston is guided axially movable and the piston rod is mounted by means of a fastening means on the motor vehicle body. Furthermore, the vibration damper comprises 10 a damper stilts 14 about which the vibration damper 10 can be connected to a lower link level. On a representation of the piston, the piston rod, the motor vehicle body, the lower arm level of the front axle and a positioned in the front axle drive shaft has been omitted here for reasons of clarity.

As 1 can be seen, the damper stilts 14 a C-shaped or cranked design in order to "bring around" the damper stilts 14 to allow the drive shaft.

When rebounding / rebounding, the power flow takes place via the lower handlebar level, damper stilts 14 , Damper ear 12 , Piston and piston rod to the vehicle body or vice versa.

The known from the prior art vibration damper 10 proves to be particularly disadvantageous if the chassis an additional actuator is provided to z. B. initiate vertically acting forces in the chassis, as due to the C-shaped design of the damper stilts 14 a lot of space is claimed, so that for the positioning of the actuator only limited space is available.

To remedy this situation, points - like 2 and 3 can be seen - the damper stilts 14 According to the invention, two separate stilt components, between which an actuator is arranged to save space.

At the in 2 illustrated embodiment, the Dämpfstelze 14 in the longitudinal direction L of the vibration damper 10 looks at an upper stilt component 14a and a lower stilt component 14b on. The actuator 16 , in this case z. B. a hydraulic unit for generating a hydraulic pressure in the vibration damper 10 is used to actuate the landing gear, is between the two stilt components 14a . 14b arranged. The housing of the actuator 16 is dimensioned so that it is the compression / rebound on the Dämpfstelze 14 can absorb acting forces, since according to this first embodiment, the compression / rebound of the power flow from the lower stilt member 14a over the housing of the actuator 16 to the upper stilt component 14b or vice versa.

At the in 3 illustrated embodiment, the damper stilts 14 in the direction perpendicular to the longitudinal direction L of the vibration damper 10 considers two separate stilt components, namely an inner stilt component 14c and an outer stilt component 14d between which the actuator 16 is arranged.

As 3 it can be seen here is the outer damper stilts 14d by means of a screw connection 18 to the inner damper stilts 14c attached.

An advantage of this embodiment is that the forces acting on compression and rebound forces on the damper stilts 14 acting forces around the actuator 16 be guided around so that this or the housing can be dimensioned less rigid.

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

• DE 102005009864 B4 [0002]

Claims (4)

Vibration damper ( 10 ) for a motor vehicle, with a C-shaped damper stilts ( 14 ) for connection to a lower link level, characterized in that in the Dämpferstelze ( 14 ) an actuator ( 16 ) is integrated to drive a positioning mechanism. Vibration damper ( 10 ) according to claim 1, characterized in that the damper stilts ( 14 ) two separate stilt components ( 14a ; 14b ; 14c ; 14d ) is formed, and that the actuator ( 16 ) between the two stilt components ( 14a ; 14b ; 14c ; 14d ) is arranged. Vibration damper ( 10 ) according to claim 2, characterized in that the actuator ( 16 ) in the longitudinal direction (L) of the vibration damper ( 10 ) considered between the two stilt components ( 14a ; 14b ) is arranged, wherein the actuator ( 16 ) has a housing which is dimensioned such that it during compression / rebound on the damper stilts ( 14 ) can absorb acting forces. Vibration damper ( 10 ) according to claim 2, characterized in that the actuator ( 16 ) in the direction perpendicular to the longitudinal direction (L) of the vibration damper ( 10 ) considered between the two stilt components ( 14c ; 14d ) is arranged.

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