DE102007047786A1 - Independent wheel suspension for controllable vehicle wheel, has steering stub axle arranged around axis of rotation in pivoting manner, where bearing flange of wheel body is pivotably supported in steering stub axle - Google Patents

Abstract

The independent wheel suspension has a steering stub axle (47) arranged around an axis of rotation in a pivoting manner, where a bearing flange of a wheel body is pivotably supported in the steering stub axle in a pivoting manner. The steering stub axle is connected with a spring carrier (50) over an upper bearing pin (48) and lower bearing pin (49). A free space is formed between the bearing pins for the execution of a drive shaft (58).

Description

The The present invention relates to an independent suspension for a steerable vehicle wheel of a powered vehicle axle, 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 a suspension for a steerable vehicle known, with a pivotable about a rotation axis arranged stub axle, which is about a kingpin with an upper arm and a lower arm in Ver bond with one with an upper wishbone bearing and a lower wishbone bearing on the Wishbone with the steering knuckle in connection, in which at least one wishbone has a beginning of the wishbone bearing portion in which the wishbone remains nearly equal in width or narrowed. 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.

Of other known from the prior art wheel head concepts, which offer the opportunity to position a PTO shaft.

From the not yet published DE 102006025555.0 The Applicant is known, for example, a wheel head, with a bearing flange, which is mounted via a wheel bearing in a steering knuckle rotatable about an axis of rotation, wherein the bearing flange has an outer end and an inner end, wherein the inner end is arranged farther away to a Fahrzeugradbefestigung than the outer end and wherein in the region of the inner end means for fixing the wheel bearing are arranged. In the known wheel head, the steering knuckle has a through opening extending in the direction of the axis of rotation, which opening is designed at least in the region of the inner end such that the means for fastening the wheel bearing are accessible for mounting.

In the DE 10 2004 048 828 A1 the applicant is described an air spring, 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 spherical 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 for a steerable vehicle wheel of a powered vehicle axle, which is simple and inexpensive to produce and mountable.

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

Accordingly, an independent suspension for a steerable vehicle wheel of a driven vehicle axle is proposed, comprising a about an axis of rotation rotatably arranged stub axle, in which a bearing flange of the wheel head is rotatably mounted, wherein the stub axle via an upper Ren and a lower bearing pin is connected to a spring carrier, wherein the bearing pins are arranged so far apart that between the bearing pin a space for the implementation of a drive shaft is formed.

According to the Invention form the bearing pin or kingpin on the one hand the connection to the steering knuckle and the other to the connection to Spring carrier or for suspension. It is intended that the spring carrier is the receptacle for spring and Damper or for an air spring damper system) as well as for the wishbone forms, whereby he is in the range of Drive shaft is designed such that it depends on the type the drive shaft designed as a drive shaft a free space for carrying the wheels driving Drive shaft is created.

in this connection can in the context of a first embodiment of the invention be provided that the spring carrier has a central opening for the universal shaft bushing or for having the transmission side propeller shaft bearing. Alternatively The spring carrier can be a one-sided notch for have the propeller shaft clearance. Furthermore, the spring carrier be executed in one or more parts and a steering stop and / or have an integrated stabilizer connection.

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;

2 A schematic sectional view of a wheel head with a connection for an upper and a lower wishbone by means of rod ends according to the DE 102006025555.0 the applicant;

3 A schematic sectional view of a wheel head with a connection for an upper and a lower wishbone by means of roller bearings according to the DE 102006025555.0 the applicant;

4 : A schematic perspective view of an embodiment of the structure of a suspension according to the invention, which allows the integration of a drive shaft;

5 : A detail view of in 4 shown embodiment of a suspension according to the invention;

6 : A perspective view of an advantageous embodiment of a spring carrier according to the invention;

7 : A perspective view of a further advantageous embodiment of a spring carrier according to the invention;

8th : A schematic perspective view of an executed according to the invention spring support an independent suspension, which has at least one steering stop;

9 : A schematic perspective view of an executed according to the invention spring support an independent suspension, which has a stabilizer connection;

10 : A schematic perspective view of a part of an inventive multi-part spring carrier of an independent suspension;

11 : A schematic perspective view of a multipart opening of the spring carrier for carrying out the drive shaft;

12 : A schematic sectional view of a first possibility of the bearing pin bearing in the steering knuckle; and

13 : A schematic sectional view of another possibility of bearing pin bearing in the steering knuckle.

In 1 is a suspension according to the WO 2005/091699 A1 the applicant 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 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.

In 2 is a schematic sectional view of a wheel head with a connection for an upper and a lower arm by means of rod ends according to the DE 102006025555.0 shown by the applicant.

The wheel head shown has a bearing flange 21 on top of two tapered roller bearings 22 in a steering knuckle 23 around the axis of rotation 24 is rotatably mounted, wherein the bearing flange 21 the receptacle for the inner rings 25 the tapered roller bearing 22 forms. As shown in the figure, the bearing flange 21 at its outer end 26 radially expanded, this radial extension of the stop for the inner ring 25 tapered roller bearing 22 forms. Furthermore, the bearing flange 21 at its inner end 27 a thread 28 on which two locknuts 29 are arranged, which are the inner rings 25 tapered roller bearing 22 Keep in the axial direction.

How out 2 can be seen, the steering knuckle 23 one concentric to the axis of rotation 24 arranged hole 30 on, in which the outer rings 31 the tapered roller bearing 22 are arranged. In the area of the inner end 27 has the steering knuckle 23 a breakthrough 32 on, through which the locknuts 29 with the kingpin removed and with the steering knuckle carrier removed. At the outer end 26 of the bearing flange 21 can a brake disc 35 and a wheel flange 36 be attached as in 2 shown. By the steering knuckle 23 the receptacle for the outer rings 11 forms, the steering knuckle can 23 be executed as a casting.

The steering knuckle 23 has recordings 39 on, in which a ball joint 40 or a molecular joint 41 for an upper wishbone 42 and a lower wishbone 43 are arranged, with a sufficiently large distance 44 between shots 39 a drive shaft (not shown) with the bearing flange 21 is connectable. In the event that the wheel head is designed to be steerable, ball joints 40 used.

This in 3 shown embodiment of a steerable wheel head according to the DE 102006025555.0 the applicant differs from the one in 2 example shown in that in the recordings 39 of the steering knuckle 23 an upper wishbone 42 and a lower wishbone 43 are arranged, these over a storage 45 with the steering knuckle 23 are connected.

Subject of the 4 is a perspective view of the independent suspension of an executed according to the invention driven front axle in independent suspension, wherein 5 a detailed view of in 4 shown embodiment of an independent suspension according to the invention for a driven vehicle axle.

Referring to 4 and 5 is the wheel head 46 through a bearing flange, not shown in a leg rotatably mounted about an axis axis 47 stored, wherein the stub axle via two individual bearing pin or kingpin 48 . 49 with a spring carrier ( 50 ) connected is; the bearing bolts 48 . 49 are arranged as far as possible away from each other, so that between the bearing pin a free space for a drive shaft 58 is created.

According to the invention form the kingpin 48 . 49 on the one hand, the connection to the steering knuckle 47 and on the other hand the connection to the one-piece spring carrier 50 or for suspension. It is provided that the spring carrier 50 the recording for spring and damper or, as in 4 shown for an air spring damper system 51 forms.

Furthermore, the spring carrier forms 50 via appropriate wishbone bearings z. B. roller bearings, plain bearings or ball joints can be performed, the receptacle for an upper arm 52 with wishbone arms 54 . 55 and a lower wishbone 53 with wishbone arms 56 . 57 , where the wishbones 52 . 53 on the spring carrier 50 opposite end are connected to the vehicle frame.

At the in 4 shown embodiment, it is provided that the wishbone arms 56 . 57 cross over, whereby the possible steering angle can be increased. In the context of other embodiments, not shown, it may also be provided that also or only the upper wishbone arms 54 . 55 cross. As an alternative to the crossing, it can be provided that a wishbone arm of a wishbone arm pair penetrates the other wishbone arm.

In addition, the spring carrier 50 in the area of the drive shaft 58 carried out so that it is out depending on the type of preferably as a double propeller shaft led drive shaft either the necessary clearance or the gearbox side bearing to the drive shaft 58 forms. Here, the spring carrier 50 for this purpose an opening 59 on, as shown in the figure. Instead of a double propeller shaft, any known from the prior art drive shaft can be used.

Preferably, as a spring-damper system 51 a system according to DE 102004048828 the Applicant whose disclosure content is to be the subject of this description in full, in which the actual, axle-side damper mount is integrated directly into the spring piston, whereby no additional connection to the spring carrier is necessary. Alternatively, a spring assembly with conventional air spring damper module (LDM) or separate spring and separate damper is possible.

A possible embodiment of a spring carrier according to the invention is shown in FIG 6 shown. Here, the spring carrier 50 an opening 59 for the implementation of the drive shaft or the transmission side storage thereof. Furthermore, the spring carrier 50 a receiving hole 60 for receiving a spring-damper system.

How out 6 can be seen, the spring carrier 50 a lower and an upper receiving bore 61 . 62 for bearing pin receptacle, wherein in the figure, the upper receiving bore 62 is indicated. Furthermore, the spring carrier according to the invention 50 a lower and an upper bearing housing 63 . 64 for transverse joint storage.

The shown in the spring carrier 50 integrated bearing housing 63 . 64 are designed as a bearing housing for roller bearing pairs, according to the invention, the wishbone bearings can also be designed as molecular or ball joints.

To enable the integration of a drive shaft, as in 7 shown, the spring carrier 50 according to the invention instead of an opening 59 a one-sided notch 65 have for the clearance of the drive shaft. This is the spring carrier 50 guided past the drive shaft on one side.

According to the invention, the spring carrier 50 additionally be designed such that it has at least one steering stop and / or a stabilizer connection. For example, in the upper part of the 8th a spring carrier 50 shown, which is below the bearing housing 64 to the wishbone bearing on the receiving bore 62 to the bearing pin fixing forming part of the spring carrier 50 a steering stop 66 for a steering direction and a steering stop 67 for the opposite steering direction.

In the lower part of the 8th is the part of the spring carrier shown in the upper part of the figure 50 shown in the assembled state, with a wishbone 55 shown the upper arm and the upper kingpin 48 is indicated. In the example shown, the situation is shown "fully deflected", with the steering knuckle 47 connected and cooperating with the steering stop steering stop screw with the reference numeral 68 is provided.

An embodiment of the spring carrier 50 comprising a stabilizer linkage is in 9 shown. Here, the spring carrier 50 below the mounting hole 60 for receiving a spring-damper system and substantially in height of the bearing housing 64 to the wishbone bearing a recording 69 for at least one stabilizer strut, not shown.

According to the invention, the spring carrier 50 depending on the design of the wishbone bearing and bearing pin connection for manufacturing and / or assembly reasons also be executed in several parts. For example, as in 10 shown the part of the spring carrier 50 comprising the bearing housing 64 to the wishbone bearing and the receiving bore 62 for bearing bolt fixation or for bearing bolt connection and - if available - the steering stops 66 . 67 be executed as a separate part, which with the spring support member comprising the receiving bore 60 for receiving a spring-damper system z. B. can be connected by means of a screw connection.

Although in 10 the upper bearing housing 64 to the wishbone bearing is shown, and the lower bearing housing 63 be designed as a separate part for wishbone storage. Furthermore, also the part of the spring carrier 50 comprising the opening 59 to carry out the drive shaft or for storage of the drive shaft for manufacturing and / or assembly reasons be made in several parts, as based 11 illustrated.

In 12 is a possibility of bearing pin bearing in the steering knuckle 47 shown at the upper bearing pin 48 each with a tapered roller bearing pair in the steering knuckle 47 is stored; Preferably, the upper bearing pin 48 the tapered roller bearings 70 over a bunch / bridge 71 in the steering knuckle 47 fixed axially to the bearing pin axis, wherein preferably no collar / web during storage of the lower bearing pin 71 is provided to component tolerances, in particular of spring carrier 50 and stub axles 47 compensate.

Alternatively to storage by means of taper roller blind ger can the bearing pin bearing means of a thrust bearing 72 in combination with a needle bearing or with a plain bearing 73 be realized, as in 13 shown as an example in the case of a sliding bearing.

Of course Every constructive training, especially every one, also falls spatial arrangement of the components of the invention Independent wheel suspension for a steerable vehicle wheel a driven vehicle axle itself and to each other and so far technically meaningful, within the scope of the present claims, without the function of independent suspension, as in the Claims is to influence, even if this From education 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

17

Spring-damper module

21

Lagerflansch

22

Tapered roller bearings

23

journal

24

axis of rotation

25

inner ring

26

outer End of the bearing flange

27

inner End of the bearing flange

28

thread

29

locknut

30

drilling

31

outer ring

32

breakthrough

35

brake disc

36

wheel flange

39

admission

40

ball joint

41

molecular joint

42

wishbone

43

wishbone

44

Distance between shots 39

45

storage

46

wheel head

47

journal

48

Kingpin, bearing bolt

49

Kingpin, bearing bolt

50

spring support

51

Air spring-damper system

52

wishbone

53

wishbone

54

wishbone

55

wishbone

56

wishbone

57

wishbone

58

drive shaft

59

opening

60

location hole

61

location hole for bearing pin fixing

62

location hole for bearing pin fixing

63

bearing housing

64

bearing housing

65

one-sided notch

66

steering stop

67

steering stop

68

Steering stop screw

69

admission for a stabilizer strut

70

Tapered roller bearings

71

Federal / Steg

72

axial bearing

73

bearings

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, 0017, 0030]
• DE 102004014555 A1 [0005]
• - DE 10030028 A1 [0006]
• - DE 10252135 A1 [0007]
• - DE 102006025555 [0009, 0018, 0019, 0034, 0038]
• DE 102004048828 A1 [0010]
• - DE 102004048828 [0045]

Claims (19)

Independent wheel suspension for a steerable vehicle wheel of a driven vehicle axle, comprising a steering knuckle rotatably arranged about an axis of rotation (US Pat. 47 ), in which a bearing flange of the wheel head is rotatably mounted, characterized in that the steering knuckle ( 47 ) via an upper and a lower bearing pin ( 48 . 49 ) with a spring carrier ( 50 ), the bearing pins ( 48 . 49 ) are arranged so far apart that between the bearing pins ( 48 . 49 ) a clearance for the implementation of a drive shaft ( 58 ), wherein the spring carrier ( 50 ) the recording ( 60 ) for spring and damper or for a spring-damper system ( 51 ) and for the wishbones ( 52 . 53 ) and wherein the spring carrier ( 50 ) in the region of the drive shaft ( 58 ) is designed such that a clearance for the implementation of a drive shaft ( 58 ) arises. Independent wheel suspension for a steerable vehicle wheel of a driven vehicle axle, according to claim 1, characterized in that the spring carrier ( 50 ) in the region of the drive shaft ( 58 ) an opening ( 59 ) for the implementation or for the transmission-side mounting of the drive shaft ( 58 ) on. Independent wheel suspension for a steerable vehicle wheel of a driven vehicle axle, according to claim 1, characterized in that the spring carrier ( 50 ) in the region of the drive shaft ( 58 ) a one-sided notch ( 65 ) for the clearance of the drive shaft ( 58 ) having. Independent wheel suspension for a steerable vehicle wheel of a driven vehicle axle, according to claim 1, 2 or 3, characterized in that the spring carrier ( 50 ) a lower and an upper receiving bore ( 61 . 62 ) for receiving the bearing bolts ( 48 . 49 ) and a lower and an upper bearing housing ( 63 . 64 ) for supporting an upper and a lower arm ( 52 . 53 ) having. Independent wheel suspension for a steerable vehicle wheel of a driven vehicle axle, according to claim 4, characterized in that the upper and lower wishbones ( 52 . 53 ) each two wishbone arms ( 54 . 55 ) 56 . 57 ) exhibit. Independent wheel suspension for a steerable vehicle wheel of a driven vehicle axle, according to claim 5, characterized in that the wishbone arms ( 54 . 55 ) 56 . 57 ), the upper and / or lower arm ( 52 . 53 ). Independent wheel suspension for a steerable vehicle wheel of a driven vehicle axle, according to one of the preceding claims, characterized in that the spring carrier ( 50 ) at least one steering stop ( 66 . 67 ) having. Independent wheel suspension for a steerable vehicle wheel of a driven vehicle axle, according to claim 7, characterized in that the spring carrier ( 50 ) below the upper bearing housing ( 64 ) to the wishbone bearing on the receiving bore ( 62 ) to the bearing pin fixing forming part of the spring carrier ( 50 ) a steering stop ( 66 ) for the one steering direction and a steering stop ( 67 ) for the opposite steering direction. Independent wheel suspension for a steerable vehicle wheel of a driven vehicle axle, according to one of the preceding claims, characterized in that the spring carrier ( 50 ) has a stabilizer connection. Independent wheel suspension for a steerable vehicle wheel of a driven vehicle axle, according to claim 9, characterized in that the spring carrier ( 50 ) below the receiving bore ( 60 ) for receiving a spring-damper system ( 51 ) and substantially in the amount of the bearing housing ( 64 ) to the wishbone bearing a receptacle ( 69 ) for at least one stabilizer strut. Independent wheel suspension for a steerable vehicle wheel of a driven vehicle axle, according to one of the preceding claims, characterized in that the spring carrier ( 50 ) in one piece or depending on the design of the wishbone bearing and Lagerbolzenanbindung from manufacturing and / or assembly reasons is made in several parts. Independent wheel suspension for a steerable vehicle wheel of a driven vehicle axle, according to claim 11, characterized in that the part of the spring carrier ( 50 ), comprising the upper bearing housing ( 64 ) for transverse joint mounting and the upper receiving bore ( 62 ) is carried out for Lagerbolzenfixierung or for Lagerbolzenanbindung as a separate part, which with the spring support member comprising the receiving bore ( 60 ) for receiving a spring-damper system ( 51 ) is connected. Independent wheel suspension for a steerable vehicle wheel of a driven vehicle axle, according to claim 11 or 12, characterized in that the part of the spring carrier ( 50 ), comprising the lower bearing housing ( 63 ) for transverse joint mounting and the lower receiving bore ( 61 ) is carried out for Lagerbolzenfixierung or for Lagerbolzenanbindung as a separate part, which with the spring support member comprising the receiving bore ( 60 ) for receiving a spring-damper system ( 51 ) is connected. Independent wheel suspension for a steerable vehicle wheel of a driven vehicle axle, according to claim 11, 12 or 13, characterized that part of the spring carrier ( 50 ), comprising the opening ( 59 ) is designed to carry out the drive shaft or for supporting the drive shaft of several parts. Independent wheel suspension for a steerable vehicle wheel of a driven vehicle axle, according to one of the preceding claims, characterized in that the upper bearing pin ( 48 ) and / or the lower bearing pin ( 49 ) in the steering knuckle ( 47 ) via a tapered roller bearing pair ( 70 ) are stored. Independent wheel suspension for a steerable vehicle wheel of a driven vehicle axle, according to claim 15, characterized in that, wherein at the upper bearing pin ( 48 ) the tapered roller bearings ( 70 ) over a covenant / bridge ( 71 ) in the steering knuckle ( 47 ) are fixed axially to the bearing pin axis. Independent wheel suspension for a steerable vehicle wheel of a driven vehicle axle, according to one of the preceding claims 1 to 14, characterized in that the upper bearing pin ( 48 ) and / or the lower bearing pin ( 49 ) in the steering knuckle ( 47 ) each by means of a thrust bearing ( 72 ) in combination with a needle bearing or with a plain bearing ( 73 ) are stored. Independent wheel suspension for a steerable Vehicle wheel of a driven vehicle axle, according to one of the preceding Claims, characterized in that the wishbone storage designed as a roller bearing bearing or as a molecular or ball joint is. Independent wheel suspension for a steerable Vehicle wheel of a driven vehicle axle, according to one of the preceding Claims, characterized in that as a spring-damper system a system is used, comprising a rolling bellows, which on a Abrollrohr is attached and thus forms a spring chamber, wherein the roll-off tube with a base part via a ball joint connected, which is a spherical bearing element in one Bearing shell, wherein the bearing shell with a clamping element is adjustable to the spheroidal bearing element.