WO2011116809A1

WO2011116809A1 - Supporting structure

Info

Publication number: WO2011116809A1
Application number: PCT/EP2010/007714
Authority: WO
Inventors: Achim Buchfink; Ferdinand Gaiser; Michael Hain; Joachim Herre; Joseph Kauss; Axel Landenberger; Bernd Palmer
Original assignee: Daimler Ag
Priority date: 2010-03-26
Filing date: 2010-12-16
Publication date: 2011-09-29
Also published as: DE102010012953A1

Abstract

The invention relates to a supporting structure (10) for the body of a passenger car, having at least one longitudinal support member (22) and at least one cross member element (20) which is rigidly connected to said longitudinal support member, a receiving space (16) for a component (18), in particular a tank, being at least partially delimited by means of said elements, wherein, if a force is exerted on the cross member (20) due to an accident, the longitudinal support member (22) is held in a guided manner on a corresponding longitudinal support part (12) over a section of the length thereof.

Description

carrier assembly

The invention relates to a carrier arrangement for a body, according to the preamble of claim 1.

From DE 40 30 740 A1, a rear part of a motor vehicle body is with

adjacent, rear side frames, which extend along the body, out. The side frames each have a central portion which rises upwards. Between these middle sections, a fuel tank is arranged. In this rear part and from the mass production of motor vehicles known bodies, it is necessary in particular in the event of accidental application of force to the body, such a fuel tank or otherwise, in

Receptacles of the bodies arranged components to protect against damage or even destruction. In particular, assemblies for alternative drives such as gas or hybrid drives are a particular challenge, since they are usually large and heavy. The receiving spaces lie in unflexely exposed areas of the body.

It is therefore an object of the present invention to provide a carrier assembly for a

To provide body, which is a particularly good protection for such

Components in case of accidental application of force to the body offers.

This object is achieved by a support arrangement for a body with the features of claim 1. Advantageous embodiments with expedient and non-trivial developments of the invention are specified in the dependent claims.

Such a carrier arrangement for a body of a passenger car, with at least one longitudinal carrier element and with at least one cross-member element fixedly connected to it, through which a receiving space for a component, In particular, a tank, a battery or the like, at least partially limited, is characterized in that the side member in case of accidental application of force to the cross member on a

corresponding longitudinal member part is kept guided over a length range. The cross member, in particular a bending cross member, is thus on the preferably very rigid running side member at least in the case of accident

Applying force to the longitudinal beam part supported very early, whereby the accidentally kraftbeaufschlagte passenger cars with the carrier assembly according to the invention is pushed and accelerated early in the occurrence of this application of force. This acceleration of the passenger car can be adapted by a corresponding configuration of a longitudinal extension, that is, a length of the side member to each requirement.

As a result of the carrier arrangement according to the invention, the motor vehicle subjected to an accident and thus the receiving space for the component is first moved out of a danger zone, whereby the receiving space is protected from deformation, which in turn avoids destruction of the component to be protected. In other words, this means that an object impacting on the cross member, for example a vehicle or the like, as well as components, carriers, elements or the like arranged in the region of the receiving space, can not penetrate into the receiving space and thus can not destroy the component.

To illustrate a very good leadership of the side member on the

Longitudinal member is the side member at least partially over a

Length range desselbigen disposed within the longitudinal carrier part in a longitudinal region of the longitudinal carrier part. This allows a controlled, preferably rectilinear translational movement of the side member and thus also with the

Side member at least indirectly connected cross member, whereby a deformation and destruction of the receiving space and the therein

accommodated component is at least almost avoided.

In an advantageous embodiment of the invention, the side member is non-positively supported at least in the case of unfa II conditional application of force to the longitudinal support member and thus for example slidably mounted frictionally on the longitudinal support member. Advantageously, by a corresponding design of the guide by setting a certain level of this frictional connection during the accidental application of force controlled Deformationsweg be granted by, for example, the longitudinal support member telescopically enters the longitudinal beam part. If, for example, a vehicle collides with the crossbeam element, a force flow results from the crossbeam element on the longitudinalbearer element. The power flow is now continued from the side member via the non-positive bearing or support desselbigen on the longitudinal member in the longitudinal member part and thus the rest of the bodywork of the motor vehicle, making them and thus the

Recording room is first pushed and accelerated. Exceeds the

Applying force to the cross member element, the force level of the non-positive support or mounting of the longitudinal support member on the longitudinal support member, the longitudinal support member moves desselbigen as a result of the guided support on the

Longitudinal member along the guide, whereby accident energy can be reduced, for example, by energy-absorbing deformation of parts, for example, the longitudinal member part. This comes to the protection of the recording room and thus the

Component and occupant protection of the passenger car. The carrier assembly according to the invention thus also enables an improvement of the kinematics of the motor vehicle by an early and preferably uninterrupted acceleration.

In addition or as an alternative to the frictional coupling between the longitudinal carrier element and the longitudinal carrier part, a positive and / or cohesive connection is also possible. The longitudinal support element can therefore also be supported on the longitudinal support part by interlocking connecting elements or by at least one support element arranged or protruding in the direction of displacement of the longitudinal support element and thus fixed at least in one direction, wherein the respective non-positive connection is designed such that in the case of Achieving a certain level of force in an accidental force of the

Cross member element at least part of the connecting elements or the support element yields, for example, tears off or deformed accordingly, so that the side member can move as intended. It is clear that a fixation of the longitudinal support member on the longitudinal support member readily by at least one adhesive, weld or solder connection can be realized, which withstands up to a desired Kraftbeaufschlagungsniveau.

In a particularly advantageous embodiment of the invention, at least one further, at least partially disposed within the receiving space longitudinal support member is provided, on which the cross member in the case of accidental force application can be supported. Has, for example, the first side member due to the accidental force applied along the guide on the longitudinal beam part at least substantially in the vehicle longitudinal direction in the direction of the receiving space but past this, so then upon reaching a maximum allowable deformation depth or a maximum allowable displacement of the first side member in the direction of Receiving space, the cross member to be supported on the further side member so as to avoid penetration into the receiving space and destruction of the component.

Preferably, a further cross member is provided, on which the further side member is supported. This is advantageously a very stiff cross member, whereby a stop structure is formed, which forms a protective cage for the component to be protected. The longitudinal member thus acts over a certain length range as a crumple zone to grow impact energy. After reaching a certain deformation path is formed by the executed stop structure of the protective cage similar to a passenger compartment, which is too large

Deformation and is protected from penetration of elements or the like to protect the component.

The carrier assembly according to the invention has the particular advantage that it can be modular. Depending on the requirements and boundary conditions of the passenger car, necessary elements, components and / or the like can be attached to the modular carrier arrangement as a mounting scope

be introduced. It is thus an assembly concept formed, which no

needed to carry out prefabricated services or measures. This means that, for example, starting from a passenger car, which does not require such a receiving space for a component such as a gas tank, a shell structure and / or a platform, in particular with regard to lightweight construction and costs can be at least almost maintained, if such

Recording room, for example, in a specific construction variant of the

Passenger car is desired and provided. In other words, by the carrier assembly according to the invention a cross-series applicable, modular design protection concept created by which already existing bodies cost reductions and cost, for example, to the use of alternative drives and thus to the need for additional components such as tanks can be adjusted. A negative impact of base cars without component to be protected and receiving space in a deformation area thus does not take place.

The carrier assembly according to the invention is readily as a front support structure or in particular as a rear support structure for the body of the

Passenger car used.

Further advantages, features and details of the invention will become apparent from the following description of a preferred embodiment and from the drawings. The features mentioned above in the description and

Feature combinations as well as the features and feature combinations mentioned below in the description of the figures and / or shown alone in the figures are not only in the respectively indicated combination but also in others

Combinations or alone, without departing from the scope of the invention.

Show it:

Fig. 1 a detail of a schematic plan view of a rear-side

Carrier assembly for a body of a passenger car, having a receiving space in which a unit to be protected is accommodated, wherein the carrier assembly is shown immediately prior to the impact of a barrier on the carrier assembly;

2 shows a detail of a schematic plan view of the carrier arrangement according to FIG

Figure 1 in a first state when impacted on the carrier assembly barrier.

FIG. 3 shows a detail of a schematic plan view of the carrier arrangement according to the preceding figures in a further state when the barrier has hit the carrier arrangement and FIG

4 shows a detail of a schematic top view of the carrier arrangement according to the preceding figures in a further state when the barrier strikes the carrier arrangement.

Fig. 1 shows a carrier assembly 10 for a rear of a body of a

Passenger car with a longitudinal member 12 and a rear strike plate 14, through which at least partially a receiving space 16 for a component, such as a high-voltage battery 18 is limited. The component may, for example, also be a tank, gas bottles or the like, by means of which energy can be stored or converted, which can be used for this purpose

Passenger cars in other ways than to drive by means of a fuel based on mineral oil.

The carrier assembly 10 further comprises a bending cross member 20 which is fixedly connected to an inner parallel carrier 22 in a connecting region 24. In addition, the carrier assembly 10 includes outer parallel beams 26 and 28 which project beyond the high-voltage battery 18 in the vehicle longitudinal direction according to a directional arrow 30 in the direction of a rear of the passenger car according to a directional arrow 32 and toward a front of the passenger car according to a directional arrow 34 on a cross member 36th are supported and firmly connected to this, which in turn is connected to the longitudinal member 12. At this point it should be noted that Fig. 1 in a vehicle transverse direction according to a directional arrow 38 and with respect to a

Forward direction of passenger car according to the direction arrow 34 right side of the support assembly 10 shows. A left side of the carrier assembly 10 is preferably formed at least substantially symmetrical to the right side shown in Fig. 1.

The high-voltage battery 18 is a component which, in the event of accidental application of force to the bending crossmember 20 according to a

Directional arrow 40, as it occurs, for example, in a rear impact of a barrier 42 on the bending cross member 20 is to be protected. The barrier 42 is, for example, a moving vehicle, which stands on the stationary

Passenger cars with the support assembly 10 bounces.

To illustrate a particularly high level of protection of the receiving space 16 and thus the high-voltage battery 18, the inner parallel carrier 22 is now held by a non-positive bearing over a length range on the longitudinal beam 12 and thus non-positively supported on this, by he Längenbereichsweise in one

Receiving space 44 of the longitudinal member 12 is arranged.

If the barrier 42 now strikes the bending cross member 20, this initially results in a deformation of the bending cross member 20, but without the parallel carrier 22 being detached from the longitudinal member 12 and being displaced relative thereto, resulting in a first Conversion of impact energy into deformation energy results, which dissipates impact energy. By in this embodiment, only non-positive support of the inner parallel support 22 on the longitudinal member 12 of the hit passenger cars and thus the receiving space 16 is pushed very early in the accidental application of force in the forward direction according to the directional arrow 34, causing the receiving space 16 moves from a danger area and thus is protected from deformation before the support assembly 10 is deformed too much. As a result, a very good protection of the high-voltage battery 18 is realized.

Is a force level of frictional storage and support of the inner

Parallel carrier 22 on the longitudinal member 12 due to the accidental force application exceeded, so are the non-positive support controlled to and

Biegequerträger 20 and in particular the inner parallel carrier 22 move due to the controlled support and guidance of the inner parallel carrier 20 at the

Longitudinal member 12 controls forward according to the directional arrow 34, whereby initially the bending cross member 20 comes into contact with the rear striking plate 14 and the

Heckschließblech 14 is deformed. This contributes to a further conversion of the impact energy into deformation energy.

Fig. 3 shows that in a further phase of the accidental application of force, the bending cross member 20 and the inner parallel carrier 22 further controlled due to the guided support the accidental Kraftbeauschlagung yield and in

Move the direction of the receiving space 16, whereby it comes to a targeted deformation of the support assembly 10 and in particular of the longitudinal member 12 in a rear region 46. This converts further impact energy into deformation energy and dissipates it. Likewise, the passenger car is further pushed according to the directional arrow 34 in the forward direction, whereby the receiving space 16 and the

High-voltage battery 18 are also very well protected in this phase. The position of this deformation region on the longitudinal member 12 is preferably determined by appropriate, the deformation resistance reducing measures, such as predetermined bending, bending or breaking points.

If a certain depth of deformation of the carrier assembly 10 has been reached, in which the bending cross member 20 and the inner parallel carrier 22 have moved laterally past it by a certain distance in the direction of the receiving space 16 or in the case of the parallel carrier 22, the bending cross member will abut 20 on the rear striking plate 14 on the outer parallel beams 26 and 28, whereby the Biegequerträger 20 in the event of accidental application of force to the outer parallel beams 26 and 28 can be supported and after covering the maximum

Deformation depth is supported. The fact that the outer parallel beams 26, 28 are supported on the very stiff cross member 36, a protective cage for the receiving space 16 and thus created for the high-voltage battery 18 is similar to a passenger compartment, thereby destroying the high-voltage battery 18 and an intrusion Objects in the receiving space 16 can be avoided. In this case, the passenger car is pushed further in this phase of the accidental application of force, which further benefits the protection of the high-voltage battery 18.

As can be seen from FIGS. 1 to 4, the carrier arrangement 10 is a modular design that can be used across a series of models.

For example, starting from a first construction variant of the passenger car, in which the high-voltage battery 18 and a protection of this and the

Recording space 16 is not required because in this construction variant of the

Passenger car this is driven only by means of an internal combustion engine, towards a second construction variant of the passenger car, which is driven by an electric motor and which thus requires the high-voltage battery 18 can be used as a platform for this first construction variant, for example, the longitudinal beam 12 and the bending crossmember 20 , in which case, for example, the bending cross member 20 is supported without mediation of the inner parallel carrier 22 on the longitudinal member 12. As a result, the body of the passenger car has a very good occupant protection. Starting from this first construction variant, the bending cross member 20 and the longitudinal member 12 can be supplemented by the inner parallel support 22, the outer parallel support 26 and 28 and the cross member 36 for the realization of the very good protection of the high-voltage battery 18 and the receiving space for the second construction variant 16 and to show just as good occupant protection.

In summary, it should be noted that in a particularly advantageous

Embodiment of the carrier assembly according to the invention -and other than in known Trägeranordnungen- within an existing conventional, so on a specific base drive concept (eg internal combustion engine) designed longitudinal beam structure, in particular for the motor vehicle rear, at least one preferably very rigid, preferably parallel to the longitudinal beam part extending "inner" parallel beam "is introduced into the longitudinal member part, which is supported very early in the event of a crash on the colliding or impacting object and thus pushes the hit cars right at the beginning of the impact inner parallel carrier is preferably carried out by means of adhesion, where appropriate granted here by appropriate design of the connection of the inner parallel carrier to the longitudinal beam member during the crash controlled deformation

or energy can be absorbed, which can be effected by the telescoping of the mounted in the longitudinal member part and displaceable in the event of a crash guided therein inner parallel support. The limitation of deformation and thus the protection of the at least one accommodated in the receiving space aggregate takes place from a certain deformation by a stop structure, which is preferably formed by at least one provided outside of the longitudinal member part "outer" parallel carrier, which on reaching the maximum allowable deformation depth of a rigid structure , preferably a cross member structure is supported. This stop structure, which preferably protects the unit or component to be protected, may be similar to an optionally partially open frame, the outer parallel carriers each forming a frame leg.

According to a development of the invention it is provided that the stop structure is formed so that it forms a kind of protective cage for the unit to be protected or the component. The stop structure here has a correspondingly greater height, so that the component to be protected is protected on all sides.

Claims

claims

1. carrier assembly (10) for a body of a passenger car, with

at least one longitudinal carrier element (22) and with at least one cross member element (20) fixedly connected therewith, by which a receiving space (16) for a component (18), in particular a tank, is delimited at least in regions,

characterized in that

the longitudinal support element (22) is held in the event of an accidental application of force to the transverse support element (20) on a corresponding longitudinal support part (12) over a length range.

2. carrier arrangement (10) according to claim 1,

characterized in that

the side member (22) at least partially within the

Longitudinal support member (12) is arranged.

3. carrier arrangement (10) according to any one of claims 1 or 2,

characterized in that

the longitudinal support element (22) is preferably fixed non-positively and / or positively or materially on the longitudinal support member (12), wherein this attachment is designed so that it allows a relative movement between the longitudinal support member and the longitudinal support member in case of accidental application of force upon reaching a defined force level , Carrier arrangement (10) according to one of the preceding claims,

characterized in that

at least one further, at least partially within the receiving space (16) arranged longitudinal support member (26,28) is provided, on which the cross member (20) in the case of accidental application of force can be supported.

Carrier assembly (10) according to claim 5,

characterized in that

the further side member (26,28) in the vehicle transverse direction (38) at least in regions adjacent to the first side member (12) is arranged inside the vehicle.

Carrier assembly (10) according to one of claims 4 or 5,

characterized in that

the further side member (26,28) at least partially has a receptacle for the component (18) or forms this.

Carrier arrangement (10) according to one of claims 4 to 6,

characterized in that

at least one further cross member element (36) is provided, on which the further longitudinal carrier element (26, 28) can be supported in the event of a crash.

Carrier assembly (10) according to claim 7,

characterized in that

the further cross member (36) is connected to the first side member (12).