DE102004004889A1 - Axle construction for motor vehicle comprises reinforcing element in the angle between transverse an longitudinal beam, a bearing holder supporting a wheel-guiding element integrated with the reinforcing element into one component - Google Patents

Abstract

Axle construction for a motor vehicle comprises two longitudinal beams (1), one transverse beam connected to the longitudinal beams, one reinforcing element (17) in the angle between the transverse beam and a longitudinal beam, and one bearing holder (18) supporting a wheel-guiding element. One reinforcing element and one bearing holder are integrated into one component commonly mounted on one longitudinal beam. Preferred Features: The integrated component is placed on the end (4) of a longitudinal beam.

Description

The The invention relates to an axle construction for a motor vehicle, comprising two longitudinal members and a crossbeam, which is connected to the side members is, with the ends of the side members over the crossbeam protrude.

to Stiffening of the composite of cross member and side members can continue each a stiffening element at an angle between the cross member and a longitudinal member provided be. about in each case a bearing receptacle is a support of a wheel guide.

The Invention is suitable for both Front and rear axles. The side members do not have to strictly in the vehicle longitudinal direction be aligned, but can, such as with trailing arm axles or composite steering axles to the vehicle longitudinal direction be hired.

An axle construction of the type mentioned in the form of a torsion beam rear axle is from the DE 297 20 207 A1 known. In this, the stiffening element is designed as a substantially planar reinforcing sheet piece, which is welded at an angle between a longitudinal member and the cross member. In addition, a separate wheel carrier is provided on the longitudinal member, which engages over the longitudinal member from above. In this case, the wheel carrier and the reinforcing sheet piece are connected by welding technology.

In front In this background, the invention aims to provide an axle construction to create the type mentioned, which are easy to produce and assemble.

to solution This object is an axle construction for a motor vehicle according to claim 1 proposed. This includes two side members and a cross member, the connected to the side rails is, with the ends of the side members over the crossbeam protrude, as well as further each a stiffening element in the Angle between the cross member and a side member, and in each case a bearing receptacle for supporting a wheel guide. The axle construction according to the invention is characterized in particular by the fact that in each case a stiffening element and in each case a bearing receptacle in a mountable together on a side rail Component are integrated.

The Functional integration of the stiffening element and the bearing receiver in a single component allows Good handling during production and assembly. In difference The state of the art now no longer requires every single component individually manufactured and assembled. Rather, they can be first manufacture both components in one operation and then as a unit assemble. This is associated with a reduction in the number of components. This in turn results in a lower logistics effort in the Production. In addition, the assembly time is shortened.

Further, advantageous embodiments of the invention are specified in the claims.

So For example, the integrated component is preferably on the end a longitudinal member attachable educated. This will in addition to a quick and easy Mounting also a firm and stable connection to the respective Longitudinal beams achieved. Preferably, the integrated component is made of high-strength steel such as e.g. 22 Mn B5 or Usibor 1500 produced. shell

The Arrangement of stock picking depends on the wheel guide to be connected from. As a rule, this is a Radführungslenker or a warehouse for one to record such. It is also conceivable, however, the camp recording as wheel carrier embody. According to one advantageous embodiment of the invention is the bearing receptacle on the wheel side of the longitudinal member and the stiffening element arranged on the opposite side of the longitudinal member, so that results in a flat construction in the vertical direction.

In Another advantageous embodiment is the integrated component with the bearing receptacle and the stiffening element as a single-shell sheet metal piece educated. Such offers advantages over cast designs in terms of weight and manufacturing costs.

The integrated component preferably has over and under the side member extending Sections on which the bearing support and the stiffening element connect together and attached to the side member. This allows a stable support on the side member. The Attachment to the same can be done by screwing, riveting and / or welding respectively. At the cross member On the other hand, the integrated component is preferably welded. The Handling when welding to the cross member is by the support relieved on the side rail.

According to a further advantageous embodiment of the invention, the stiffening element of the integrated component has a U-shaped cross-section. This allows a higher stiffness compared to simple reinforcement plates. virtue example, the U-shaped cross-section is open to the longitudinal member, so that legs thereof may extend above and below the longitudinal member, which form the bearing receptacle with their ends.

The Storage can be done by an additional Lagerrohr be stiffened. The former is preferably so executed that the bearing tube in contour conforming sections of the bearing seat of integrated component is held. More preferably, the Mounting the bearing tube to the bearing receiver of the integrated Component by welding. It can be arranged horizontally or vertically as required, the bearing tube be.

In a further advantageous embodiment of the invention is the Bearing seat by two opposite, formed essentially horizontal sections, respectively with an opening for one standing bearing axis are provided. Between these horizontal Sections, a first bearing part is then received, which is a second bearing part, for example, a bearing pin extending through the openings rotatably supports.

Next the function as a stiffening element and bearing support can the integrated component in addition serve to support or define further components. In a advantageous embodiment is in this sense to the stiffening element a sleeve attached, which are the same by opposing profile walls extends. On this sleeve can for the case of a front axle e.g. a steering gear are set. moreover can the sleeve support the legs of the stiffening element against each other, creating a additional Stiffening effect is achieved on the integrated component.

Farther it is conceivable in the transition area between the bearing receiver and the stiffening element of the integrated Component to attach a sleeve, which are located opposite each other profile walls the transition area and extends through the side member. About the Sleeve can the integrated component attached to the side member become. In addition, the sleeve serve as an attachment point.

following The invention will be explained in more detail with reference to preferred embodiments. The Drawing shows in:

1 a spatial representation of an axle construction according to a first embodiment of the invention,

2 a spatial representation of an integrated component with a bearing receptacle and a stiffening element, which in an axle according to 1 can be installed

3 a detailed view of the installation situation of the integrated component according to the first embodiment,

4 a spatial representation of an integrated component with a bearing holder and a stiffening element according to a second embodiment, and in

5 a detailed view of the installation situation of the integrated component according to the second embodiment.

The first embodiment in the 1 to 3 refers to a Vorderachskonstruktion for a motor vehicle, which is particularly suitable for compact passenger vehicles.

The axle construction comprises two side members 1 and 2 that has a cross member 3 connected to each other. Here are the ends or end sections 4 and 5 the side member 1 and 2 in the reverse direction over the cross member 3 out. The latter is trough-shaped, with a central portion 6 essentially horizontally between the longitudinal members 1 and 2 extends. Laterally obliquely upward, subsequent sections 7 and 8th are via consoles 9 and 10 respectively. 11 and 12 on the side rails 1 and 2 welded.

The side members 1 and 2 as well as the cross member 3 are designed as hollow profiles, which are brought from corresponding pipe sections by bending or other forming processes such as hydroforming (IHU) in the final form. However, for the cross member 3 Also, for example, a downwardly open profile can be used.

At the axle construction bearing receptacles are provided for connection of wheel guide not shown in detail. The axle construction also includes a stabilizer 13 which extends between two of the wheel guide members not shown in the vehicle transverse direction. The stabilizer 13 is about two stabilizer bearings 14 rotatably mounted relative to the vehicle body.

At the crossbeam 3 can also have a console 15 with a pendulum support 16 be provided, which receives a tilting moment of a motor.

To stiffen the composite from the side rails 1 and 2 and the cross member 3 is in each case at an angle between a longitudinal member 1 respectively. 2 and the cross member 3 a stiffening element 17 intended. The stiffening element 17 is only with its ends on the cross member 3 and a side member 1 respectively. 2 tethered. It closes with the side member 1 respectively. 2 an angle of more than 0 degrees.

A special feature is that such a stiffening element 17 with a bearing receiver 18 for a wheel guide to an integrated component 19 is summarized, which as a unit at one end 4 respectively. 5 a longitudinal member 1 respectively. 2 can be mounted.

This integrated component 19 is in 2 shown in detail while 3 shows the corresponding installation situation. It is designed as a one-piece sheet metal bent part, which is in the region of the stiffening element 17 has a U-shaped cross-section. This cross section is to the adjacent side member 1 respectively. 2 open. Two legs lying one above the other in the vertical direction 20 and 21 are at the front end of the stiffening element 17 extended in the vehicle transverse direction. These extended sections 22 and 23 run over and under the side member 1 respectively. 2 on the opposite side and form with their ends 24 and 25 the camp admission 18 ,

In the first embodiment shown here are the ends 24 and 25 bent into a sleeve, which is a bearing tube 26 conforming to the contour. The bearing tube 26 is arranged horizontally and with the bearing support 18 of the integrated component 19 welded. However, it is also possible the ends 24 and 25 to shape so that a bearing tube 26 standing or in an intermediate position can be arranged.

For fastening the integrated component 19 this is first with the transition section between the stiffening element 17 and the camp admission 18 ie in the area of the sections 22 and 23 from the front to a side member 1 respectively. 2 attached. This causes a first orientation of the integrated component 19 what the connection to the cross member 3 handling technology facilitated. After attaching the back end of the stiffening element 17 attached to the contour of the cross member 3 adapted, welded to the latter.

Afterwards there is an additional attachment in the transition area. This can also be done by welding. However, it is also possible, the integrated component 19 there with the side member 1 respectively. 2 to screw or rivet.

Furthermore, in the illustrated embodiment in the region of the stiffening element 17 a sleeve 27 appropriate. This extends through the opposite profile walls or legs 20 and 21 of the integrated component 19 and allows the attachment of a component to be accommodated in the engine compartment, such as a steering gear. About the sleeve 27 can be the integrated component 19 additionally stiffen.

Another sleeve 28 is in the transition area between the bearing seat 18 and the stiffening element 17 of the integrated component 19 appropriate. Also this further sleeve 28 extends through opposing profile walls of the integrated component 19 as well as through the side member 1 respectively. 2 , Like the former sleeve 27 The latter can also be used for attachment or articulation of engine compartment components or components of the suspension. In addition, it is conceivable, the sleeve 28 at the same time as a fastener for the integrated component 19 on the side member 1 respectively. 2 use.

A second embodiment is in the 4 and 5 shown. This differs from the first embodiment only by the configuration of the integrated component 19 ' as well as its attachment to the side member 1 respectively. 2 , Similar components are accordingly provided with the same reference numerals.

The integrated component 19 ' comprises a reinforcing element 17 that is configured according to the first embodiment. By contrast, the one-piece associated bearing mount 18 ' designed for a bearing with a stationary bearing axis.

The camp recording 18 ' is accordingly by two substantially horizontal, parallel sections 29 and 30 at the ends of the legs 24 and 25 . formed Each of these sections 29 and 30 is with a depression 31 provided with an opening in the middle 32 having. Between the wells 31 is a first storage part 33 held the bearing which rotatably receives a second bearing part. The second bearing part is for example a bearing journal extending through the opening 32 extends.

For fastening the integrated component 19 ' according to the second embodiment of a side member 1 respectively. 2 the former will come to an end again 4 respectively. 5 attached. The transition area of the integrated component 19 ' is with a slot 34 provided, which a screw connection after welding of the integrated component 19 ' to the cross member 3 allows.

For both embodiments results from the functional integration of the stiffening element 17 and the camp admission 18 in a component simplification of manufacture and assembly. In particular, the number of components is reduced and the assembly time is shortened. The support of the integrated th component on the side member also facilitates handling during attachment.

The However, the invention is not limited to the illustrated embodiments limited, but comprises all embodiments specified in the patent claims.

1

longitudinal beams

2

longitudinal beams

3

crossbeam

4

End of the longitudinal member 1

5

End of the longitudinal member 2

6

Middle section of the cross member 3

7

oblique section of the cross member 3

8th

oblique section of the cross member 3

9

console

10

console

11

console

12

console

13

stabilizer

14

stabilizer suspension

15

console

16

Stabilizer

17

stiffener

18 18 '

bearing seat

19 19 '

integrated component

20

leg

21

leg

22

Transition section

23

Transition section

24

Leg end section

25

Leg end section

26

bearing tube

27

first shell

28

second shell

29

parallel section

30

parallel section

31

deepening

32

opening

33

first bearing part

34

Long hole

Claims (17)

Axle construction for a motor vehicle, comprising: - two side members ( 1 . 2 ), and - a crossbeam ( 3 ), with the side members ( 1 . 2 ), the ends ( 4 . 5 ) the side members ( 1 . 2 ) over the cross member ( 3 ) and furthermore - in each case a stiffening element ( 17 ) at an angle between the cross member ( 3 ) and a side member ( 1 . 2 ), and - one bearing receptacle each ( 18 . 18 ' ) for supporting a Radführungsglieds, wherein each a stiffening element ( 17 ) and one bearing receptacle each ( 18 . 18 ' ) in a common on a side member ( 1 . 2 ) mountable component ( 19 . 19 ' ) are integrated. Axle construction according to claim 1, characterized in that the integrated component ( 19 . 19 ' ) on the end ( 4 . 5 ) of a longitudinal member ( 1 . 2 ) can be plugged. Axle construction according to claim 1 or 2, characterized in that the bearing receptacle ( 18 . 18 ' ) on the wheel side of the longitudinal member ( 1 . 2 ) and the stiffening element ( 17 ) on the opposite side of the longitudinal member ( 1 . 2 ) is arranged. Axle construction according to one of claims 1 to 3, characterized in that the integrated component ( 19 . 19 ' ) with the bearing receiver ( 18 . 18 ' ) and the stiffening element ( 17 ) is formed as einschaliges sheet metal piece. Axle construction according to one of claims 1 to 4, characterized in that the integrated component ( 19 . 19 ' ) above and below the side member ( 1 . 2 ) extending sections ( 22 . 23 ), which the bearing receptacle ( 18 . 18 ' ) and the stiffening element ( 17 ) and to the side member ( 1 . 2 ) are attached. Axle construction according to one of claims 1 to 5, characterized in that the integrated component ( 19 . 19 ' ) with the longitudinal member ( 1 . 2 ) screwed, riveted and / or welded. Axle construction according to one of claims 1 to 6, characterized in that the integrated component ( 19 . 19 ' ) with the cross member ( 3 ) is welded. Axle construction according to one of claims 1 to 7, characterized in that the stiffening element ( 17 ) of the integrated component ( 19 . 19 ' ) has a U-shaped cross-section. Axle construction according to claim 8, characterized in that the U-shaped cross section to the longitudinal member ( 1 . 2 ) is open and above and below the longitudinal member ( 1 . 2 ) extending legs ( 20 . 21 ), with their ends ( 24 . 25 ) the bearing receiver ( 18 . 18 ' ) form. Axle construction according to one of claims 1 to 9, characterized in that in the bearing receptacle ( 18 ) a bearing tube ( 26 ) is recorded. Axle construction according to claim 10, characterized in that the bearing tube ( 26 ) in contour-conforming sections of the bearing receptacle ( 18 ) of the integrated component ( 19 ) is held. Axis construction according to claim 10 or 11, characterized in that the bearing tube ( 26 ) with the bearing receiver ( 18 ) of the integrated component ( 19 ) is welded. Axle construction according to one of claims 10 to 12, characterized in that the bearing tube ( 26 ) is arranged horizontally. Axle construction according to one of claims 10 to 12, characterized in that the bearing tube ( 26 ) is arranged standing. Axle construction according to one of claims 1 to 9, characterized in that the bearing receptacle ( 18 ' ) by two opposite, substantially horizontal sections ( 29 . 30 ) is formed, each with an opening ( 32 ) are provided for a stationary bearing axis and between a bearing part ( 33 ) take up. Axle construction according to one of claims 1 to 15, characterized in that on the stiffening element ( 17 ) a sleeve ( 27 ) is mounted, which extends through the same by opposing profile walls. Axle construction according to one of claims 1 to 16, characterized in that in the transition region between the bearing seat ( 18 . 18 ' ) and the stiffening element ( 17 ) of the integrated component ( 19 . 19 ' ) a sleeve ( 28 ) is mounted, which is formed by mutually opposite profile walls of the transition region and by the longitudinal member ( 1 . 2 ).