DE102007047790A1 - 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) which is connected via a spring-damper module (20) to the vehicle frame, wherein the Achsschenkel (1) via a kingpin (4) with the spring carrier (16) is connected and at least one upper wishbone (10), comprising two wishbone arms (8, 9) and at least one lower wishbone (14), comprising two wishbone (12 , 13), wherein the spring carrier (16) is configured such that the spring-damper module (20) above the upper control arm (10), between the wishbone arms (8, 9) of the upper arm (10) or below of the upper transverse link (10) is arranged.

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.

In the DE 10 2004 048 828 A1 the applicant whose disclosure content is to be the subject of this description, an air spring assembly is described 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 is a spheroidal bearing element in a bearing shell, wherein the bearing shell is adjustable with a clamping element on the spheroidal bearing element.

The present invention has for its object, starting from the mentioned prior art, to provide an independent suspension, in which a spring-damper module, in particular a spring-damper module according to the DE 10 2004 048 828 A1 the applicant is integrated in a simple manner.

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 spring-damper module connected to the vehicle frame is, wherein the steering knuckle via a kingpin connected to the spring carrier and at least one upper wishbone and at least one lower wishbone, which preferably each have two wishbone arms, the upper Are stored at the end or at the lower end of the kingpin, wherein the spring carrier is designed such that the Spring-damper module above the upper wishbone, between the wishbone arms of the upper arm or below of the upper transverse link is arranged.

The Invention will be described below with reference to the accompanying figures exemplified in more detail. Show it:

1 : A schematic view of an independent suspension according to the WO 2005/091699 A1 the applicant, comprising an air spring-damper module;

2 : A schematic view of an independent suspension according to the WO 2005/091699 A1 the applicant, comprising an air spring and a damper;

3 : A schematic view of a spring-damper module according to the DE 10 2004 048 828 A1 ;

4 A first schematic view of an independent suspension according to the invention comprising a spring-damper module according to DE 10 2004 048 828 A1 ; and

5 : An advantageous embodiment of the spring carrier of the independent suspension according to the invention;

6 : A further advantageous embodiment of the spring carrier of the independent suspension according to the invention;

7 : A further embodiment of the spring carrier of the independent suspension according to the invention;

8th : A further embodiment of the spring carrier of the independent suspension according to the invention; and

9 : A further advantageous embodiment of the spring carrier of the independent suspension according to the invention.

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 storage at its lower end 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.

In 3 is a spring-damper module according to the DE 10 2004 048 828 A1 represented by the applicant. The spring-damper module 20 includes a rolling bellows 21 whose upper end is attached to a connection plate 22 supports, with the other end of the rolling bellows 21 on a roll tube 23 is attached. This is by the rolling bellows and the roll tube a spring chamber 24 defined, which is connected to a compressed air supply. Furthermore, between the rolling tube 23 and a base part in the configuration of a conventional vibration damper 25 a ball joint 26 arranged; the piston rod of the vibration damper 25 is with 39 designated.

The ball joint 26 has a spheroidal bearing element 27 on which is in a bearing cup 28 Rotary movements and related to a longitudinal axis 29 also pivoting movements of the bearing element 27 allows. The bearing shell is designed to be radially elastic and has at least one slot 30 extending from the upper end of the bearing shell to over an equator of the bearing element 27 extend. Furthermore, the bearing shell by means of a clamping element 31 on the spheroidal bearing element 27 adjustable.

Here, the clamping element 31 from a clamping ring 32 be formed, which is attached to a counter sleeve 33 supported. Advantageously, the release element form 27 , the bearing cup 28 , the tension ring 32 and the counter holding sleeve 33 as a ball joint a self-contained assembly. When assembled, the ball joint is replaced by a protective bellows 34 covered, on the clamping ring 32 by means of a clamping ring 35 is attached.

As 3 it can be seen on the vibration damper 25 an angle ring 36 attached, being between the bearing element 27 and the angle ring 36 as an attachment of the vibration damper a seal 37 is arranged. Furthermore, another seal 38 provided, which the spring space 24 and the bearing shell 28 separates. Such a designed spring-damper module can be installed such that the vibration damper protrudes freely under the piston, with no further axle-side damper attachment is necessary.

According to the invention and referring to 4 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 supports the one spring-damper module 20 , in particular via a module according to the DE 10 2004 048 828 A1 the applicant is connected to the vehicle frame, wherein the steering knuckle 1 via a kingpin 4 with the spring carrier 16 is connected and at least one upper wishbone 10 comprising two wishbone arms 8th . 9 and at least one lower wishbone 14 comprising two wishbone arms 12 . 13 which preferably at the upper end or at the lower end of the kingpin 4 are stored.

Here is the spring carrier 16 designed such that, as 4 it can be seen, a spring-damper module 20 , in particular a module according to the DE 10 2004 048 828 A1 the applicant above the upper wishbone 10 is arranged. Alternatively, the spring-damper module 17 between the wishbone arms 8th . 9 of the upper control arm 10 or below the upper wishbone 10 be arranged.

Subject of the 5 to 8th are different embodiments of the spring carrier of the independent suspension according to the invention.

At the in 5 example shown is the spring carrier 16 designed such that the connection to the kingpin is designed in two sections and a first part 41 and a second part 42 takes place through which the kingpin is guided, wherein the spring carrier 16 at its end facing away from the kingpin a receptacle 40 for the spring-damper module has. Alternatively, the connection to the kingpin can be made in one piece.

According to a in 6 shown embodiment of the invention, can in the upper part 41 a bearing housing 43 be integrated for storage of the upper arm. The recording 40 for the spring-damper module can be closed in the circumferential direction, regardless of a single-cut or two-section running connection to the kingpin, as shown 7 illustrated, or be executed open, as in 8th shown.

Furthermore, the spring carrier 16 an opening 44 for receiving the vibration damper of the spring-damper module, as in 9 shown.

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

Spring-damper module

21

bellows

22

connecting plate

23

rolldown

24

spring chamber

25

vibration

26

ball joint

27

spheroidal bearing element

28

bearing shell

29

longitudinal axis

30

slot

31

clamping element

32

clamping ring

33

Against holding sleeve

34

bellows

35

clamping ring

36

angle ring

37

poetry

38

poetry

39

piston rod

40

admission

41

part of the spring carrier

42

part of the spring carrier

43

bearing housing

44

opening

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, 0012, 0013, 0021]
• DE 102004014555 A1 [0005]
• - DE 10030028 A1 [0006]
• - DE 102004048828 A1 [0007, 0008, 0014, 0015, 0026, 0030, 0031]

Claims (9)

Independent suspension, with one around a rotation axis ( 5 ) rotatably arranged stub axle ( 1 ), which on a spring carrier ( 16 ) supported by a spring-damper module ( 20 ) is connected to the vehicle frame, wherein the steering knuckle ( 1 ) via a king pin ( 4 ) with the spring carrier ( 16 ) and at least one upper wishbone ( 10 ), comprising two wishbone arms ( 8th . 9 ) and at least one lower wishbone ( 14 ), comprising two wishbone arms ( 12 . 13 ), characterized in that the spring carrier ( 16 ) is configured such that the spring-damper module ( 20 ) above the upper control arm ( 10 ), between the wishbone arms ( 8th . 9 ) of the upper arm ( 10 ) or below the upper transverse link ( 10 ) is arranged. Independent wheel suspension according to claim 1, characterized in that the wishbones ( 10 . 14 ) at the upper end or at the lower end of the kingpin ( 4 ) are stored. Independent wheel suspension according to claim 1 or 2, characterized in that the spring carrier at its the kingpin ( 4 ) facing away from a receptacle ( 40 ) for the spring-damper module ( 20 ) having. Independent wheel suspension according to claim 1, 2 or 3, characterized in that the connection of the spring carrier ( 16 ) to the kingpin ( 4 ) is executed in one piece. Independent wheel suspension according to claim 1, 2 or 3, characterized in that the connection of the spring carrier ( 16 ) to the steering knuckle ( 4 ) is cut in two parts and over a first part ( 41 ) and a second part ( 42 ), by which the kingpin ( 4 ) is guided. Independent wheel suspension according to claim 5, characterized in that in the upper part ( 41 ) a bearing housing ( 43 ) is integrated to support the upper arm. Independent wheel suspension according to one of the preceding claims, characterized in that the receptacle ( 40 ) for the spring-damper module ( 20 ) is closed in the circumferential direction or open. Independent wheel suspension according to one of the preceding claims, characterized in that as a spring-damper module, a module according to the DE 10 2004 048 828 A1 the applicant, comprising a rolling bellows ( 21 ) attached to a roll-off tube ( 23 ) and thus a spring chamber ( 24 ), wherein the roll-off tube ( 23 ) with a vibration damper ( 25 ) via a ball joint ( 26 ), which is a spheroidal bearing element ( 27 ) in a bearing shell ( 28 ), wherein the bearing shell ( 28 ) with a tensioning element ( 31 ) on the spheroidal bearing element ( 27 ) is adjustable. Independent wheel suspension according to claim 8, characterized in that the spring carrier ( 16 ) an opening ( 44 ) for receiving the vibration damper ( 25 ) of the spring-damper module ( 20 ) having.