DE102017011838A1 - Motor vehicle body structure and motor vehicle - Google Patents

Abstract

A motor vehicle body structure is described, comprising a support frame (7), wherein the support frame (7) is assembled from a plurality of extruded profiles (6), wherein the extruded profiles (6) at least partially have receptacles for receiving surface elements, wherein the surface elements in the support frame (7) are plugged in and fixed on it. Furthermore, a corresponding motor vehicle (2) is described.

Description

The invention relates to a motor vehicle body structure and a motor vehicle. The vehicle body structure has a support frame.

Motor vehicle body structures of the type mentioned are known in the art. Basically, one can distinguish between self-supporting and non-self-supporting bodies in motor vehicles. Non-self-supporting bodies are mounted on a chassis that forms a skeleton or a support frame, which carries a drive, the body and payloads such as passengers. The chassis may be configured, for example, as a ladder frame, box frame, grid frame, central tube frame, platform frame or frame framework.

Most passenger cars today have self-supporting bodies, i. Chassis and body are combined into one unit.

Self-supporting bodies are considered more modern, lighter, stiffer and more compact than non-self-supporting bodies. However, there are also disadvantages, for example high initial investments, e.g. high development costs and high tooling costs, since many different tools are needed for forming the complex sheets and joining them, low flexibility with regard to different body variants and poor repairability, which in case of a deformation of the body, e.g. as a result of an accident, high repair costs. Due to the high costs, small series vehicles can very often not be profitably constructed and produced as self-supporting bodies.

The EP 1 902 931 B1 describes a body module for a motor vehicle, in particular a passenger car, and a mounting arrangement of such a body module to adjacent carrier profiles of a body of a passenger car.

The body module for a motor vehicle, in particular a passenger car, has a plurality of interconnected surface elements and carrier profiles, the carrier ends are to be inserted into receiving openings adjacent to the body module further carrier profiles, the carrier ends are assigned to separate locking elements, which are slidably held on the associated carrier profile and are inserted by displacement relative to the associated carrier profile in the respective receiving opening of the corresponding adjacent to the body module further carrier profile.

The DE 10 2013 216 821 A1 discloses a body structure for a vehicle having a floor assembly and a superstructure thereon, which is a girder structure formed from girders for cladding with skin panels, with girders of the girder construction comprising a combination of sheet metal profiled parts with open, in particular U-shaped cross-section and cross tubes with fully closed Cross section are formed.

The object of the invention is to develop motor vehicle body structures of the type mentioned in that small series vehicles, especially self-propelled, are inexpensive to manufacture and repairable.

The object is achieved by a motor vehicle body structure according to claim 1 and a motor vehicle according to the independent claim 10. Further developments and further developments are the subject of the dependent claims.

The motor vehicle body structure described below has a support frame which is composed of a plurality of extruded profiles, wherein the extruded profiles have at least partially receptacles for receiving surface elements, wherein the surface elements are inserted into the support frame and fixed thereto.

In this way, the outer skin of the body can be specified by the surface elements. The surface elements can be connected very easily and with relatively low demands on the tolerances with the support frame by the surface elements are inserted into the corresponding receptacles. Through the use of extruded profiles, a good combination of stability, functionality and cost-effective production can be achieved. A corresponding motor vehicle body structure is also relatively easy to modify, d. H. Various body styles can be produced without much additional effort.

Corresponding vehicle body structures can easily be repaired in the event of an accident, since the motor vehicle structure consists of several individual parts that are easier to replace than in a self-supporting body.

In a first further embodiment, it can be provided that the surface elements are sandwich structure plates. Sandwich panels can be easily and yet stiff. Depending on their function, they can also have various other properties and, for example, build up to be firm, water-resistant, impact-absorbing, low-vibration, sound-absorbing, etc.

In a further embodiment, it can be provided that the surface elements are glued into the receptacles of the extruded profiles. In this way, a good seal against incoming moisture can be achieved. In addition, a corresponding adhesive assembly with respect to the requirements for tolerances is straightforward. Also, the production of surface elements and extruded profiles is easier, since a smaller number of breakpoints is required and therefore fewer breakpoints must be created.

In another further embodiment, provision may be made for a carpet to be applied to the surface elements in an interior space. The carpet may, for example, be glued to the surface elements. Thus, a corresponding surface element can readily be used as a supporting element for an interior for passengers and loads.

In another further embodiment, it may be provided that the extruded profiles have at least partially a cable or pipe shaft. In this way, necessary cables or pipes, for example, liquid lines, gas lines, etc.) can be compactly and safely accommodated in the extruded profiles.

In a further development that goes beyond this, it can be provided that the extruded profiles are fixed to one another by means of corner connectors. As a result, a complex body construction can be realized by a plurality of extruded profiles and corner connectors, such as a tub for a passenger compartment or longitudinal and transverse beams in the front and rear of the motor vehicle.

In another further embodiment which goes beyond this, provision can be made for the extruded profiles to be screwed to the corner connectors. Such glands represent detachable connections, so that an exchange in the event of a defect or accident is possible.

In another further embodiment, it may be provided that the extruded profiles consist of an aluminum alloy. Aluminum is light, has a low melting point and can still be alloyed very stiff. It is therefore well suited for load-bearing and energy-absorbing components.

In another further embodiment, it can be provided that at least one subframe is fixed to the axle profile for the axle profile. In this way, the axle mount can be completely assembled and disassembled.

A corresponding subframe may be provided in another further embodiment also for receiving a drive. This also allows the disassembly of the drive by removing the subframe.

A first independent article relates to a motor vehicle with a motor vehicle body structure of the type described above.

Further advantages, features and details will become apparent from the following description in which - where appropriate, with reference to the drawings - at least one embodiment is described in detail. The same, similar and / or functionally identical parts are provided with the same reference numerals.

• 1 eine perspektivische Ansicht auf ein Kraftfahrzeug mit einer Kraftfahrzeugkarosseriestruktur;
• 2a eine Seitenansicht auf das Kraftfahrzeug aus 1;
• 2b ein Längsschnitt durch die Kraftfahrzeugkarosseriestruktur aus 2a;
• 3 eine weitere Seitenansicht auf das Kraftfahrzeug aus 1;
• 4 eine Darstellung einer möglichen Fertigungsvariante im Schnitt C-C aus 3;
• 5 eine Detailansicht im Bereich einer Tür;
• 6 einen Querschnitt durch die Karosserie entlang der Schnittlinie A-A aus 3, sowie
• 7 einen Querschnitt entlang der Schnittlinie B-B aus 3.

They show schematically:

• 1 a perspective view of a motor vehicle with a motor vehicle body structure;
• 2a a side view of the motor vehicle 1 ;
• 2 B a longitudinal section through the motor vehicle body structure 2a ;
• 3 another side view of the motor vehicle 1 ;
• 4 an illustration of a possible manufacturing variant in section CC 3 ;
• 5 a detailed view in the area of a door;
• 6 a cross section through the body along the section line AA 3 , such as
• 7 a cross section along the section line BB 3 ,

1 shows a perspective view of a motor vehicle 2 with a vehicle body structure 4 ,

The car 2 is an autonomously driving motor vehicle and equipped with the necessary electronics and sensors. The car 2 is especially designed for short distances that are covered with comparatively low speed. Such vehicles are often used off public roads, for example in large factories or airports and the like. In such vehicles it does not come especially on aerodynamics. In addition, corresponding motor vehicles are only produced in small quantities.

The automobile body structure 4 consists of a plurality of extruded profiles 6, which is a support frame 7 form and sandwich structure plates fixed to the support frame 8th ,

The extruded profiles 6 are by means of corner joints 10 connected with each other. The extruded profiles 6 form a tub 12 that forms a passenger compartment and in the seats 14 are arranged. The extruded profiles 6 furthermore form a front frame 16 as well as a rear frame 18 ,

On the front frame 16 is a subframe 20 arranged, a drive 22 as well as wheels 24 wearing. At the rear frame 18 is a subframe 26 arranged, the accumulators 28 as well as wheels 30 wearing.

In the direction of travel right is a door portal 32 formed by the passengers in the motor vehicle 2 can get in and out.

2a shows a side view of the motor vehicle 2 out 1 ,

In 2A are the sandwich panels 8th more visible.

2 B shows a longitudinal section through the vehicle body structure 4 out 2A ,

An extrusion profile 6.1, which has a front end of the front frame 16 forms, has a receptacle 34.1 for a sandwich panel 8.1. The sandwich panel 8.1 is glued into the receptacle 34.1. The sandwich panel 8.1 forms an engine cover.

The sandwich panel 8.1 is connected to an extruded profile 6.2, which has two receptacles 34.2, 34.3, wherein the sandwich panel 8.1 is fixed in the receptacle 34.2 and another sandwich panel 8.2 in the receptacle 34.3. The sandwich panel 8.2 forms a bulkhead.

The sandwich structure plate 8.2 is further defined in a receptacle 34.4 of an extruded profiles 6.3. In a further receptacle 34.5 of the extruded section 6.3, a further sandwich panel 8.3 is set, which has a bottom of the tub 12 forms.

The sandwich panels 8.2 and 8.3 are on the side, which is an interior of the tub 12 make up, with a rug 38 pasted.

3 shows a further side view of the motor vehicle 1 ,

In 3 different sections AA, BB and CC are shown, which are explained in the following figures.

4 shows a representation of a possible manufacturing variant of the extruded profile 6.1 in section CC 3 ,

The extruded profile 6.1 can initially be formed as a closed profile having a closed cavity which is milled out laterally to a recording 38 for the sandwich panel 8.1 to form.

5 shows a detailed view in the area of the door portal 32 ,

An extruded profile 6.4 used there has an upwardly directed receptacle in the front region 40 for a sandwich panel, not shown, in the rear it is smooth to allow the provision of a pivoting door, not shown.

6 shows a cross section through the motor vehicle body structure 4 along the section line AA 3 ,

In the lower area, an extruded profile 6.5 is provided, which has a receptacle 34.6 for a bottom forming sandwich panel 8.3 and a receptacle 34.7 for a side wall forming sandwich panel 8.4.

Furthermore, in the extruded profile 6.5, a screw 42 for the determination of interior components, for example, the seats not shown here 14 intended.

A shaft 44 serves to accommodate supply lines 46 ,

7 shows a cross section along the section line BB 3 ,

The door portal 32 becomes perpendicular from a door pillar 48 formed in the receptacle 40 is plugged in.

Although the invention has been further illustrated and explained in detail by way of preferred embodiments, the invention is not limited by the disclosed examples, and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention. It is therefore clear that a multitude of possible variations exists. It is too it should be understood that exemplary embodiments are really only examples that should not be construed as limiting the scope, applicability, or configuration of the invention in any way. Rather, the foregoing description and description enable the skilled artisan to practice the exemplary embodiments, and those of skill in the knowledge of the disclosed inventive concept may make various changes, for example, on the function or arrangement of particular elements recited in an exemplary embodiment. without departing from the scope defined by the claims and their legal equivalents, such as further explanation in the description.

LIST OF REFERENCE NUMBERS

2

motor vehicle

4

Automotive body structure

6

Extrusions

6.1 - 6.5

Extruded

7

supporting frame

8th

Sandwich plates

8.1 - 8.4

Sandwich plate

10

Corner connector

12

tub

14

Seat

16

front frame

18

rear frame

20

subframe

22

drive

24

bikes

26

subframe

28

accumulator

30

bikes

32

door portal

34.1 - 34.5

admission

36

carpet

38

admission

40

admission

42

screw

44

shaft

46

supply line

48

door pillar

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 1902931 B1 [0005]
• DE 102013216821 A1 [0007]

Claims (10)

Motor vehicle body structure, with a support frame (7), characterized in that the support frame (7) is assembled from a plurality of extruded profiles (6, 6.1 - 6.5), wherein the extruded profiles (6, 6.1 - 6.5) at least partially receptacles (34.1 - 34.5 ) for receiving surface elements (8.1 - 8.4), wherein the surface elements (8.1 - 8.4) inserted into the support frame (7) and fixed thereto. Motor vehicle body structure Claim 1 , characterized in that the surface elements are Sandwichstrukturplatten (8.1 - 8.4). Motor vehicle body structure Claim 1 or 2 , characterized in that the surface elements (8.1 - 8.4) are glued into the receptacles (34.1 - 34.5). Motor vehicle body structure according to one of the preceding claims, characterized in that a carpet (36) is applied to the surface elements (8.1 - 8.4) in an interior space. Motor vehicle body structure according to one of the preceding claims, characterized in that the extruded profiles (6, 6.1 - 6.5) at least partially have a cable or pipe shaft (46). Motor vehicle body structure according to one of the preceding claims, characterized in that the extruded profiles (6, 6.1 - 6.5) by means of corner connectors (10) are fixed to each other. Motor vehicle body structure Claim 6 , characterized in that the extruded profiles (6, 6.1 - 6.5) with the corner connectors (10) are screwed. Motor vehicle body structure according to one of the preceding claims, characterized in that the extruded profiles (6, 6.1 - 6.5) consist of an aluminum alloy. Motor vehicle body structure according to one of the preceding claims, characterized in that at the extrusion profiles (6, 6.1 - 6.5) at least one subframe (20, 26) is fixed to the axle. Motor vehicle with a motor vehicle body structure according to one of the preceding claims.

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