DE102007001721A1 - Modular body for e.g. passenger car, has module comprising seat receptacle and cross beam that are designed to be component of corresponding modules of bodies, which belong to different body architectures - Google Patents

Abstract

The body has a module comprising a support channel front side (6) and a channel beam (7) that are designed to be a component of corresponding modules of bodies, which belong to different body architectures. Another module (10) has a seat receptacle (8) and a cross beam (9) that are designed to be the component of the corresponding modules of the bodies belonging to different body architectures, which are matched to one another by being cut to size. The body architectures are different in breadth, length or height. An independent claim is also included for a system comprising bodies.

Description

The The invention relates to a front body floor of a motor vehicle, d. H. the part of the body floor that covers the tunnel. Under a body is intended here a body shell of a motor vehicle, For example, a car, to be understood.

In In the automotive industry, architecture is a technical term Base, on the outside different Build vehicle models. This technical basis determines structure and shaping of the body shell. By using an architecture can be a variety of vehicle models with reduced development costs offer cost-effective. The cost advantage stems from the fact that in the architectural strategy the proportion of identical parts within an architecture is high. Under common parts here is a body module or a body part understood that in at least two vehicle models of the same architecture is used.

A Self-supporting motor vehicle body has a passenger compartment close down to the bottom Body floor over Hochstreben, mostly A-, B- and C-pillar called, is connected to the roof. The body floor itself consists of several modules, commonly called sheet metal parts welded together as part of the manufacturing process. These include under the side skirts, seat crossbeams, seat cushions and the tunnel. Between these extending in the vehicle longitudinal direction modules are floor plates. In the area of the front body floor is located approximately under the front seats of the ground in front both sides of the tunnel, in the middle body area behind the heel plate the bottom back and in the rear body area behind the rear axle crossbeam the extension Ground behind with the spare wheel well.

It is an object of an embodiment of the Invention to provide a front body floor for a motor vehicle, the architecture across can be used.

The solution This object is achieved by the features of the independent claims. advantageous Developments and other embodiments result dealing with the characteristics of dependent Claims.

In a first embodiment a front body floor for a motor vehicle is proposed, whose tunnel is designed as a roll profile.

By the choice of a cost-effective Rolling profiles can be used for the tunnel smaller radii of curvature than in deep drawing, which conventionally used for body subfloors will realize. This results in an improved space utilization, because when rollforming the deviations of the actual geometry of the Target geometry should be lower. The so far omitted production-related drawing slopes to lead to larger open spaces at the arrangement of the vehicle parts, which in turn gives room for the design a front body floor creates for two or more body architectures and thus across all architectures can be used. By the manufacturing technology provision of a Tunnel geometry to the specifications of the developer as possible close up, lets For example, the position of the cardan shaft within the tunnel choose more freely, what the simultaneous realization of different drive concepts, namely Front, rear and four-wheel drive, relieved. different Drive concepts can be as yet usually only on different Realize body architectures. By length adjustment in the tunnel longitudinal direction let yourself In addition, the tunnel as a longitudinal part easily adapt to different vehicle lengths.

Farther otherwise fall in the thermoforming process used as an alternative associated limitations at the drawing depth away or are larger profile cross sections with a roll profile possible. Also This requires more freedom in the design of a front body floor and the possibility him for to design two or more body architectures appropriately.

By choosing a roll-formed tunnel, the use of high-strength materials is possible, which can increase the longitudinal reinforcement of the body floor. Thus, in another embodiment, materials with a yield strength up to 1400 N / mm ² , z. B. a yield strength of 800 N / mm ² to 1400 N / mm ² used. Alternatively, in the case of a head-on collision, which is considered sufficient, the use of high-strength materials can reduce the sheet thickness and thereby reduce the weight, while at the same time reducing the production costs. Furthermore, the material quality and the wall thickness of the roll profile can be chosen flexibly, so that the provision of side rail variants for different vehicle models within the same architecture, but also for different architectures easier.

Another embodiment provides a front body floor comprising a first module having at least one submodule, the submodule being configured to be part of corresponding first modules of bodies that are to different bodyworks tectures belong.

Under a submodule in the sense of this description of the invention is intended to be a functionally independent, self-contained unit to be understood, consisting of individual parts and / or composed of components, and subsequently in a submodule or built into a module. A component exists from individual parts or aids such as oils, fats etc., the one to self-employed, self-contained functioning component is.

Under A module within the meaning of this description of the invention is intended to be a functional independent, self-contained autonomous assembly of parts and / or be understood from submodules. Such modules have traditionally been separate installed in the vehicle body. One module fulfills one exactly defined partial function of the motor vehicle completely and can be detached developed, produced and tested from the rest of the motor vehicle become. A module has at least one external interface, which is well defined, and about the it is connected to the motor vehicle or can communicate. As a rule, it is a functioning OK unit for installation in the parent System (module or vehicle) delivered and can with little effort adapted to new tasks or market requirements, eg. B. by addition new or additional Functions or to make it usable across all architectures.

The named embodiment allows a vehicle manufacturer, the production costs during production from front bodywork floors for different To reduce body architectures. The first corresponding to each other Own modules of bodies of different architectures the same submodule, so far anarchitectural represents usable equal part. The front bodywork can For example, have a first module "tunnel" to which the submodule "tunnel cap" and "tunnel reinforcement" are assigned. The first module "Tunnel" is architecture-specific, whereas the submodules mentioned can be used across architectures.

at a further embodiment The front body floor has a second module that at least has a submodule, with submodules of corresponding ones second modules related to bodies of different body architectures belong, by cutting into each other. For example, the front body floor may have a second module "seat attachment" to which the Submodule "seat mount" and "seat cross member" include. The Submodule "seat cross member" can be by a blank, here a cut to length, for a seat attachment of a make other architecture suitable or in a seat cross member for another To transfer architecture.

In an embodiment of the front body floor submodules differ from corresponding ones second modules related to bodies of different body architectures belong, only in their width, length or height. An example of this is again the second module "seat mounting", whose submodule "seat cross member" from other Seat cross-members other vehicle architectures only differs in length.

Furthermore, an embodiment is provided, which has a third module, which has at least one submodule, wherein the third module is designed to differ in comparison to corresponding third modules of bodies of other body architectures only by the submodule. So it is conceivable that the front body floor 1 a module "bottom front" left or right with the submodules 4 (Longitudinal reinforcement) and 5 Form (extension longitudinal reinforcement), wherein z. B the interface of the respective submodule to the module "floor front" is the same, but the submodules can differ, for example, in geometry (wall thickness, shape, material quality, connection technology to module floor front ...).

A another embodiment the front body floor also has a fourth module. This is designed to be compared to corresponding ones fourth modules of bodies of other architectures only in the geometric or spatial Distribution of its submodules is different. The corresponding ones fourth modules have the same submodules in this case, however are these in the area or arranged differently in the room. The for the adaptation to the respective architecture required effort is very low here and can be different, for example execution of assembly operations in the manufacture of the fourth module. One Example would be a fourth module "Floor front "that over the Submodule "Exhaust Mounting" has. Is the module "Soil front "across the architecture can be used, then results in another architecture because of used there other engines or catalyst systems one on other geometric arrangement of the submodule "exhaust mounting". Next to the other geometric arrangement it may also be necessary from the Submodule "Exhaust Mounting" be to place the same submodule twice in the tunnel.

It goes without saying that the above embodiments may also occur in combination. The differences to each other korres Ponding modules of different architectures are in this case particularly low if, as proposed in another embodiment, all submodules of the front body floor are those of a first, second, third or fourth module.

One Another aspect of the invention relates to a bodywork for a motor vehicle, comprising a front body floor as described above. Under a body should be understood here a body shell become. Furthermore, an aspect of the invention relates to a motor vehicle, in particular a car, with such a body.

Further Features and advantages of the claimed invention will be apparent from the following detailed description with reference to the accompanying drawings recognizable, which are given below as non-limiting examples are. Here, the use of reference numerals in the figures not to be understood that the reference numerals denote To limit the scope of the claimed invention. It shows:

1 a front body floor;

2 a seat cross member with attachment.

1 shows a front body underbody 1 a motor vehicle, such as a car. Together with 2 you can see that it is composed of different modules and submodules.

The tunnel 3 of the front body floor 1 is designed as a rolling profile and consists of a high-strength steel with a yield strength of 1200 N / mm ² . Such high-strength materials in general make it possible, in combination with the machining process, to realize particularly small radii of curvature of approximately 6 mm, for example in the areas B1 and B2. This falls in this part of the front body floor 1 the deviation of the actual geometry from the target geometry is particularly small, which facilitates the realization of a design that can be used across multiple motor vehicle platforms and thus across platforms. In addition, thereby the existing space can be exploited particularly efficient, resulting in more designerischer freedom in vehicle development.

The front body floor 1 has a first module 3 in the form of a tunnel 3a , The tunnel 3a is initially used for a concrete body of a first body architecture. The submodules 6 (Tun nelkappe) and 7 (Tunnel gain) of the first module 3 are formed, part of corresponding first modules 3 or tunneling 3a of bodies belonging to different body architectures. This means that the submodules 6 and 7 without structural alteration also with other body architectures in the respective first module 3 can be used.

The front body underbody 1 also has second modules 2 (Bottom front left or right), the submodule 5 (Extension longitudinal reinforcement) and 10 (Seat attachment) owns. The seat attachment 10 this includes a submodule 9 (Seat cross member). The second modules 2 first find in the front body floor 1 a bodywork that belongs to a first body architecture. By cutting are the submodules 5 . 9 customizable for a second body architecture. Will these submodules 5 . 9 cut off in the longitudinal direction, they form a corresponding submodule for a second body architecture.

By cutting, if necessary, the submodules 5 and 9 also for another vehicle model within one and the same body architecture. The same applies if necessary for the modules 2 itself. So it may be sufficient, the modules 2 cut parallel to the longitudinal direction to realize a different wheelbase.

As already stated shows 2 a second module 10 in the form of a seat attachment. The second module 10 in turn is made up of two submodules 8th and 9 To sammengesetzt. The submodule 9 , a seat cross member, only needs to be cut to fit a different body architecture. The submodule 8th , a seat, is architecture-specific.

The submodule 9 is a closed roll profile that is vertically spaced from the module 2 is arranged. The vertical spacing succeeds with modules 2 welded submodules 8th whose flanges flared (not shown) are the vertical position of the module 9 pretend.

The closed training of the submodule 9 and the choice of a high-strength material require a high structural rigidity of the front body floor 1 , which leads to a favorable intrusion behavior in a side impact. The vertical spacing allows the use of space under the submodule in a structurally simple manner 9 to lay air hoses for the interior heating there.

Although specific embodiments have been described above, it will be apparent to those skilled in the art that the description of these embodiments is not intended to limit the invention to the precise form disclosed. The invention is intended rather, all modifications, equivalents, and alternatives fall within the scope of the claimed invention.

1

front body floor

2

third Module / floor front

3

first module

3a

tunnel

4

Submodule / longitudinal reinforcement

5

Submodule / extension longitudinal reinforcement

6

Submodule / Tunnel cap

7

Submodule / tunnel reinforcement

8th

Submodule / seat adapter

9

Submodule / seat crossmember

10

second Module / seat attachment

B1

Area

B2

Area

Claims (16)

Front body floor ( 1 ) for a motor vehicle whose tunnel ( 3a ) is designed as a roll profile. The front body floor of claim 1, wherein the roll profile material has a yield strength of 800 N / mm ² to 1400 N / mm ² . Front body floor according to one of the preceding claims, with a first module ( 3 ), the at least one submodule ( 6 . 7 ), wherein the sub-module is adapted to be part of corresponding first modules of bodies belonging to different body architectures. Front body floor according to claim 3, which as a first module a tunnel ( 3a ), wherein the tunnel as a submodule a tunnel cap ( 6 ) and a tunnel reinforcement ( 7 ) and tunnel cap and tunnel reinforcement can be used in different body architectures. Front body floor according to one of the preceding claims, with a second module ( 10 ), the at least one submodule ( 9 ), whereby submodules of corresponding second modules belonging to bodies of different body architectures can be converted into one another by cutting. Front body floor according to claim 5, comprising as a second module a seat attachment ( 10 ), wherein the seat attachment as submodule a seat crossmember ( 9 ), which can be converted by cutting into a seat cross member for a different body architecture. Front body floor after one of the previous ones Claims, in which submodules of corresponding second modules, the belong to bodies of different body architectures, only in their width, length or height differ. Front body floor according to claim 7, which has as a second module a seat attachment ( 10 ), wherein the seat attachment as submodule a seat crossmember ( 9 ), and the seat cross member can be converted by cutting in a seat cross member of another body architecture. Front body floor according to one of the preceding claims, with a third module ( 2 ) having at least one sub-module, wherein the third module is configured to differ only by the sub-module compared to corresponding third modules of bodies of other body architectures. Front body floor according to claim 9, which as a third module has a floor in front ( 2 ), wherein the bottom front of the submodules longitudinal reinforcement ( 4 ) as well as extension longitudinal reinforcement ( 5 ), wherein the bottom is formed in front, to distinguish compared to corresponding bottom front of bodies of other body architectures only by the longitudinal reinforcement or the extension longitudinal reinforcement. Front body floor after one of the previous ones Claims, in which a fourth module is formed, compared to corresponding fourth modules of bodies of other body architectures only in the geometric or spatial distribution of his To distinguish submodules. Front body floor according to claim 11, which as a fourth module has a floor in front ( 2 ), wherein the floor has front as a submodule an exhaust mounting and differs in front of the body of other body architectures only in the geometric arrangement of the exhaust mounting compared to corresponding bottom. Front body floor after one of the previous ones Claims, that exclusively composed of first, second, third and fourth modules is. Front body floor after one of the previous ones Claims, with a tunnel, a floor in front, a longitudinal reinforcement, an extension Longitudinal reinforcement as well a seat attachment. Body for a motor vehicle, esp Passenger car, comprising a front body floor according to one of the preceding claims. Motor vehicle, in particular passenger cars, with a bodywork according to claim 15.