DE102007047791A1 - independent suspension - Google Patents

Abstract

It is proposed an independent suspension, with a about an axis of rotation (5) rotatably mounted stub axle (1), which is supported on a spring carrier (16) via a damper (18) and an air spring (19) or via a spring damper Module (17) is connected to the vehicle frame (20), wherein the steering knuckle (1) is connected to the spring carrier (16) via a king pin (4) and at least one upper transverse link (10) and at least one lower transverse link (14) has, which are mounted at the upper end or at the lower end of the kingpin (4), in which the spring carrier (16) is designed and dimensioned so that the air spring (19) or the spring-damper module (17) below the vehicle frame (20) is positioned and supported against it.

Description

The The present invention relates to an independent suspension according to the preamble of claim 1.

Out Independent suspensions are known in the prior art, in which the formed for Radkopflagerung kingpin also forms the storage to the wishbones.

From the WO 2005/091699 A1 The Applicant is known, for example, a suspension for a steerable vehicle wheel, with a about a rotation axis rotatably arranged stub axle, which is supported on a support, wherein the carrier is connected via a spring-damper module to the vehicle frame.

The known suspension has a coaxial with the axis of rotation arranged kingpin, at least one upper arm and at least one lower arm, wherein the wishbone with the vehicle frame and at least one connecting means with the steering knuckle in combination. According to the WO 2005/091699 A1 the carrier is connected via a coaxial with the axis of rotation arranged bearing with the steering knuckle, wherein the connecting means are arranged coaxially to the axis of rotation and wherein the control arms are connected to the connecting means.

Furthermore, from the DE 10 2004 014 555 A1 the Applicant discloses a suspension for a steerable vehicle wheel, with a about a rotation axis rotatably arranged stub axle, which is connected via a kingpin with an upper arm and a lower control arm, with one with an upper wishbone bearing and a lower wishbone bearing over which the wishbone communicate with the steering knuckle in which at least one wishbone has a section beginning at the wishbone bearing, in which the wishbone remains nearly the same or narrows in width. Preferably, this section is achieved by crossing or penetrating wishbones.

Furthermore, from the DE 100 30 028 A1 the applicant a suspension for a steered wheel of a motor vehicle known. The known suspension has a wheel, which is connected via upper link and lower arm to a chassis of a motor vehicle, wherein the wheel is connected directly to a spring carrier. Here, the spring carrier is rotatably mounted in the wheel carrier, wherein by the use of a bolt which is connected on the one hand with the spring carrier and on the other hand with the wheel carrier, a compact suspension is realized.

As part of the DE 102 52 135 A1 the applicant is an independent suspension for motor vehicles, in particular for commercial vehicles, comprising Achsquerlenker and Achslängslenker described, in which at least the Hauptbeanspruchten link arms and struts of the transverse and trailing arm in each area have an elliptical cross-section.

at the known from the prior art independent wheel suspensions is the air spring or the air spring damper module outside the vehicle frame and arranged above the upper control arm.

In the DE 10 2004 048 828 A1 the applicant is described an air spring assembly comprising a rolling bellows, which is attached to a roll tube and thus forms a spring chamber, wherein the roll tube is connected to a base part via a ball joint having a spheroidal bearing element in a bearing shell, wherein the bearing shell with a clamping element is adjustable to the spheroidal bearing element.

Of the present invention is based on the object, starting from the cited prior art, an independent suspension specify at which the air spring arrangement below the vehicle ladder frame can be positioned.

These The object is solved by the features of claim 1. Further embodiments and advantages of the invention are apparent from the dependent claims.

Therefore an independent suspension is proposed, with a about a rotation axis rotatably arranged stub axle, which is supported on a spring carrier, the over a damper and an air spring or over Spring-damper module is connected to the vehicle frame, wherein the steering knuckle via a kingpin with the spring carrier is connected and at least one upper Wishbone and at least one lower wishbone, the are mounted at the upper end or at the lower end of the kingpin, in which the spring carrier designed and dimensioned so is that the air spring or spring-damper module directly is positioned under the vehicle frame and is supported against it.

The Invention will be described below with reference to the accompanying figures explained in more detail by way of example, wherein the same components are denoted by the same reference numerals. Show it:

1 : A schematic view of an independent suspension according to the WO 2005/091699 A1 the applicant, in which the air spring-damper module is arranged outside the vehicle frame and above the upper control arm;

2 : A schematic view of an independent suspension according to the WO 2005/091699 A1 the applicant, in which the air spring is arranged outside the vehicle frame and above the upper control arm;

3 : A schematic perspective view of an independent suspension according to the invention comprising a separate air spring and a separate steamer;

4 : A first schematic view of an independent suspension according to the invention comprising a spring-damper module; and

5 : A second schematic view of the independent suspension according to 4 ,

In 1 is a suspension according to the WO 2005/091699 A1 the applicant, comprising a spring-damper module shown schematically.

Here, the steering knuckle 1 an upper intake 2 and a lower intake 3 on, in which a kingpin 4 which is coaxial with a rotation axis 5 is arranged. In this way, the steering knuckle can 1 around the axis 5 turn to steering movements for the vehicle wheel 6 perform.

At the in 1 shown example, the kingpin 4 at its upper end a storage 7 which can be embodied, for example, as a roller bearing, plain bearing, ball joint or as a molecular joint, and via which a first arm 8th and a second arm 9 an upper wishbone 10 are connected. Furthermore, the kingpin 4 at its lower end a storage 11 on which like the storage 7 can be executed and over the a first arm 12 and a second arm 13 a lower wishbone 14 are connected. By the upper wishbones 10 and the lower wishbones 14 directly with the kingpin 4 connected, extend the wishbone, resulting in an improvement of the spring kinematics. Preferably, the bearings 7 and 11 inside the rim 15 arranged.

Between the upper intake 2 and the lower intake 3 is a carrier 16 arranged, which with a spring-damper module 17 connected, so that the steering knuckle 1 over the carrier (spring carrier) 16 and the spring-damper module 17 supported on a vehicle frame, not shown. The first arm 8th and the second arm 9 as well as the first arm 12 and the second arm 13 are also hinged to a vehicle frame, not shown. How out 1 The first arm is visible 12 and the second arm 13 arranged crossed, whereby the possible steering angle can be increased. Here is the spring-damper module 17 outside the vehicle frame and above the upper wishbone 10 arranged.

In 2 a suspension is shown whose basic structure corresponds to the structure of in 1 shown suspension, with the difference that instead of the spring-damper module 17 a separate damper 18 and a separate air spring 19 be used. Also in this case is the air spring 19 outside the vehicle frame and above the upper wishbone 10 arranged.

According to the invention and referring to 3 an independent suspension is proposed, with a about an axis of rotation 5 rotatably mounted stub axle 1 , which is on a spring carrier 16 which is supported by a damper 18 and an air spring 19 with the vehicle frame 20 is connected, wherein the steering knuckle 1 via a kingpin 4 with the spring carrier 16 is connected and at least one upper wishbone 10 and at least one lower wishbone 14 has, at the upper end or at the lower end of the kingpin 4 are stored, wherein the spring carrier 16 designed and dimensioned so that the air spring 19 completely or partially under the vehicle frame 20 is positioned and supported against it.

According to the invention, the upper wishbone 10 two wishbone arms 8th . 9 and the lower wishbone 14 two wishbone arms 12 . 13 have, wherein the wishbone arms 12 . 13 of the lower arm 14 can cross over. The wishbone arms are on the kingpin 4 opposite end connected to the vehicle frame.

The Inventive vehicle-side air spring support the frame is optimal for a conventional frame structure, there in this case no additional frame cross struts required are.

How out 3 can be seen, the axle-side shock absorber support via the spring carrier 16 , where here the damper 18 is disposed between the upper wishbone arms; in the context of further not shown embodiments of the invention, the damper 18 be arranged at a further suitable location, for example in the direction of travel in front of or behind the air spring.

In 4 and 5 a suspension is shown whose basic structure corresponds to the structure of in 3 shown suspension, with the difference that instead of the separate damper 18 and the separate air spring 19 a spring-damper module 17 is used, wherein the damper is arranged coaxially with the spring.

Here is the spring carrier 16 designed and dimensioned so that the spring-damper module 17 completely or partially under the vehicle frame 20 is positioned and supported against it.

Advantageously, as a spring-damper module 17 also a system according to the DE 10 2004 048 828 A1 the applicant whose disclosure content is to be the subject of this description in its entirety.

Of course Every constructive training, especially every one, also falls spatial arrangement of the components of the invention Independent suspension in itself and to each other and as far as technical useful, within the scope of the present claims, without the function of independent suspension, as in the Claims is to influence, even if this Trainings not explicitly in the figures or in the description are shown.

1

journal

2

admission

3

admission

4

kingpin

5

axis of rotation

6

vehicle

7

storage

8th

wishbone

9

wishbone

10

wishbone

11

storage

12

wishbone

13

wishbone

14

wishbone

15

rim

16

Carrier, spring support

17

Spring-damper module

18

damper

19

air spring

20

vehicle frame

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• WO 2005/091699 A1 [0003, 0004, 0014, 0015, 0019]
• DE 102004014555 A1 [0005]
• - DE 10030028 A1 [0006]
• - DE 10252135 A1 [0007]
• DE 102004048828 A1 [0009, 0030]

Claims (5)

Independent suspension, with one around a rotation axis ( 5 ) rotatably arranged stub axle ( 1 ), which on a spring carrier ( 16 ) supported by a damper ( 18 ) and an air spring ( 19 ) or via a spring-damper module ( 17 ) with the vehicle frame ( 20 ), wherein the steering knuckle ( 1 ) via a king pin ( 4 ) with the spring carrier ( 16 ) and at least one upper wishbone ( 10 ) and at least one lower wishbone ( 14 ), which at the upper end or at the lower end of the kingpin ( 4 ), characterized in that the spring carrier ( 16 ) is designed and dimensioned such that the air spring ( 19 ) or the spring-damper module ( 17 ) under the vehicle frame ( 20 ) is positioned and supported against it. Independent wheel suspension, according to claim 1, characterized in that the upper transverse link ( 10 ) two wishbone arms ( 8th . 9 ) and the lower wishbone ( 14 ) two wishbone arms ( 12 . 13 ), which at the the kingpin ( 4 ) facing away from the end of the vehicle frame are connected. Independent wheel suspension, according to claim 2, characterized in that in the event that it is a damper ( 18 ) and an air spring ( 19 ), the damper ( 18 ) between the upper wishbone arms ( 8th . 9 ) is arranged. Independent suspension, according to claim 1 or 2, characterized in that as a spring-damper system ( 17 ) A system is used, comprising a rolling bellows, which is attached to a roll tube and thus forms a spring chamber, wherein the roll tube is connected to a base part via a ball joint, which has a spheroidal bearing element in a bearing shell, wherein the bearing shell with a clamping element is adjustable to the spheroidal bearing element. Independent wheel suspension according to claim 1, characterized in that the damper ( 18 ) in front of or behind the air spring or in front of or behind the upper control arm ( 8th ) is arranged.