DE102007047037A1 - Motor vehicle body has two rear side longitudinal supports arranged oppositely in rear end, where rear side longitudinal supports, supporting frame and cross beams are provided with fitting position - Google Patents

Abstract

The motor vehicle body (2) has two rear sides longitudinal supports (3,4) arranged oppositely in rear end (1). The rear side longitudinal supports, a supporting frame (7) and cross beams (9a-n) are provided with a fitting position (8), and are arranged and formed such that one or multiple aggregates and attaching parts are fixed in area of fitting position at the rear side longitudinal supports, supporting frame and cross beams depending on an actual desired fitting of the rear end in freely selectable manner. An independent claim is included for a method for finalizing a rear end of a motor vehicle body.

Description

The The invention relates to a motor vehicle body and a method for completing a rear of a motor vehicle body according to the features of claim 1 or 7.

In the course of an increasing ecological consideration of the driving techniques of motor vehicles, in particular the analysis of the pollutant emissions of internal combustion engines, extensive measures have already been proposed in order to reduce them as far as possible. For diesel vehicles z. B. proposed, the fuel (diesel) to add a so-called additive to remove, inter alia, deposits on the injection pump and the injector or to reliably protect the entire fuel system from corrosion. Such additives are added directly to the tank contents or stored in containers on the vehicle and supplied to the fuel system defined. With regard to gasoline-powered vehicles, there are already strict legislation on hydrocarbon emissions in certain countries, such as the United States. In order to meet these legislative requirements and to continue to be present in such markets in the future, it is appropriate for vehicle manufacturers to extract or trap in the fuel tank or elsewhere hydrocarbon vapor which forms part of a known active carbon cycle. Filter (AKF) supply and collect in the same and, where appropriate, subsequently provide the vapors respectively the collected fuel to the combustion process of the drive. Such an active carbon filter preferably consists of a plastic container, which in turn is filled with granules of active carbon. Such current developments in the field of alternative powertrains / fuels, in the field of exhaust aftertreatment, in the field of energy storage, in the field of hybrid and in the field of space concepts require, inter alia, extensive changes to the rear. These changes are currently being carried out individually. So is out of the DE 199 50 165 B4 a motor vehicle body is known, with a built up of longitudinal and transverse beams floor support frame with a stepped opposite the main floor rear floor, which is provided with a seat assembly and formed by side rear carrier, which are placed on the side members of the main floor, wherein at least one directly on the rear floor self-supporting trained rear seat cushion frame is mounted with a hinged hinge, which is attached to a cross member and removably disposed in the area between the rear carriers on the main floor. The DE 102 39 501 A1 discloses a vehicle body rear part structure having left and right rear frames extending along the vehicle body, a plurality of parallel spaced cylindrical fuel tanks horizontally disposed between the left and right rear frames, and a cross member reinforcing the rear frames between two adjacent fuel tanks is arranged and extends between the left and right rear frame. The DE 103 12 3190 A1 describes a seat support on the floor structure of motor vehicles, wherein the same is formed by at least one firmly connected to the floor structure, but releasable support member which extends over the floor panel of the floor structure in the rear of the vehicle in the vehicle transverse direction between rear outer side members. Finally, out of the DE 10 2005 044 907 A1 a rear-side vehicle body structure of a motor vehicle is known, which comprises a so-called load distribution element which extends in the body longitudinal direction and is attached to a spare wheel housing so that it extends over an underside of the spare wheel housing, with a front. End region of the load distribution element connected to a cross member and a rear end portion thereof is connected to a rear wall. All the above solutions have in common that for each space requirement or for each attachment and / or for an aggregate, which may be an electric machine, for example in connection with hybrid concepts, in the rear of the motor vehicle individual fastening or holding systems are to create which in particular lead to high development costs per vehicle and make the further use of new technologies across platforms more difficult.

Though it is already known from practice, constructed as a modular kit to arrange complete floor groups in the rear, for example the rear floor with associated recesses for a spare wheel (spare wheel well) and a fuel tank as a separate Module to manufacture and integrate into the vehicle body. However, due to the versatile vehicle models and equipment, which today provides a manufacturer during manufacture of the vehicle, especially the shell platform rear undercarriage according to the method very controlled early and in particular as a single item. Through this necessary and very early in the current process control criteria to be considered, is a significant one Extra work and costs incurred.

On this basis, it is an object of the invention to provide a motor vehicle body, which in the clocked assembly process allows optimal, ie, cheapest and simple equipment or completion of the rear carriage with one or more currently desired units and / or attachments on platforms of different vehicle models away. The task is also to provide a suitable method for completing a rear of a motor vehicle body.

The asked task is first by a motor vehicle body with two arranged in the rear of the same opposite rear side rails solved, wherein at least one subframe and / or one or more cross member the attributable to the rear side members and to the same are determinable, and wherein the rear side rails, the subframe (s) and / or the cross member (s) already provided in advance with a sufficient number of joints and the same are constructed and arranged in dependence from a currently desired equipment of the rear carriage freely selectable one or more appropriately adapted aggregates and / or attachments modular in the region of said joints on the rear side member (s), the subframe (s) and / or the crossmember (s) can be fixed.

By this measure is already due for a Variety of cultivation variants prepared, so to speak standardized joints particularly advantageous with the assembly of the rear carriage the currently required units and / or attachments also in the clocked assembly process across platforms of various kinds Vehicle models extremely simplified. individual elaborate holding or fastening systems or one with additional effort associated very early control of a modular shell platform rear cart as a single part, as the prior art favors, are advantageous avoided. In summary, therefore, a motor vehicle body created with a modular rear section that has a body structure essentially between the rear side rails describes. There are various expansion stages, combinations of systems, etc. possible, without each a new fastening system to accomplish.

The Subclaims describe preferred developments or Embodiments of the vehicle body according to the invention.

After that can according to a first embodiment the at least one subframe with the rear side rails be firmly connectable attachment. It is also conceivable that the At least one subframe a tool in the manner of an assembly the aggregates and / or attachments in the rear support Einfahrrahmens, which is not for installation on the vehicle body is provided. Furthermore, it can be provided that the rear Side rails, subframe and / or cross member one or more uniform joints for fixing have different aggregates and / or attachments. Further advantageous can the aggregates and / or attachments by a or several drive units, by one or more energy storage, by one or more fuel storage, by one or more Storage for a fuel additive, by one or more Seat mounts for a rear row of seats, by a conventional Spare wheel well and / or by other known and optional units and / or attachments to be installed in the rear as recordable also be formed active carbon filter (AKF). Further it may be indicated that the at least one subframe is such is designed that this with both aggregates and / or attachments for the rear and for the middle and / or Front end of the vehicle body can be fitted.

• a) zunächst der zumindest eine Hilfsrahmen und/oder der/die Querträger mit einem oder mehreren modulartig zusammengestellten Aggregaten und/oder Anbauteilen zum Einbau in besagtem Hinterwagen der Kraftfahrzeugkarosserie positionsgerecht bestückt werden,
• b) nachfolgend der mit dem/den Aggregaten und/oder Anbauteil/en bestückte Hilfsrahmen und/oder der/die entsprechend bestückte/n Querträger im Sinne einer „Hochzeit" in die Kraftfahrzeugkarosserie hinein geführt oder an dieselbe heran geführt werden, und schließlich
• c) der zumindest eine Hilfsrahmen, der/die Querträger, das/die Aggregate und/oder das/die Anbauteil/e an zumindest zwei gegenüberliegend angeordneten hinteren Seitenlängsträgern der Kraftfahrzeugkarosserie festgelegt werden, wobei
• d) hintere Seitenlängsträger, Querträger und/oder Hilfsrahmen vorab derart mit einer hinreichenden Anzahl Fügestellen versehen werden, dass in Abhängigkeit von einer aktuell gewünschten Ausstattung des Hinterwagens frei wählbar eines oder mehrere der modulartigen Aggregate und/oder Anbauteile im Bereich besagter Fügestellen an den hinteren Seitenlängsträger/n, dem/den Querträger/n und/oder dem/n Hilfsrahmen festlegbar sind.

The method for completing a rear end of a motor vehicle body with one or more units and / or attachments using at least one subframe and / or one or more cross members is characterized in particular by the fact that

• a) first of the at least one subframe and / or the / the cross member with one or more modularly assembled aggregates and / or attachments for installation in said rear of the vehicle body are fitted in position,
• b) subsequently the subframe stocked with the unit (s) and / or attachment (s) and / or the corresponding cross member (s) are guided into the vehicle body in the sense of a "wedding" or finally brought to it
• c) the at least one subframe, the cross member (s), the aggregate (s) and / or the attachment (s) are secured to at least two oppositely disposed rear side rails of the vehicle body, wherein
• d) rear side members, cross member and / or subframe are provided in advance so with a sufficient number of joints that depending on a currently desired equipment of the rear carriage freely selectable one or more of the modular units and / or attachments in the region of said joints on the rear side rails / n, the cross member (s) and / or the subframe (s) can be fixed.

The The invention will be described below with reference to the drawings illustrated embodiments explained in more detail. Show it:

1 very schematically the interesting lower portion of the rear of a motor vehicle body in cross-section transverse to the vehicle longitudinal axis with two oppositely arranged rear side rails and a Subframe,

2 to 7 exemplary various design variants of the rear carriage with regard to an inventive assembly of the subframe with aggregates and / or attachments, and

8th an extremely schematic diagram of a suitable exemplary assembly concept.

1 Accordingly, first shows the lower portion of the rear carriage 1 one in 8th shown in detail motor vehicle body 2 with two known opposite arranged rear side rails 3 . 4 ,

To an optimal, ie, konstengünstige and simple equipment or completion of the rear carriage 1 with one or more currently desired aggregates 5a -N and / or attachments 6a -N according to the 2 to 7 To be able to perform on platforms of different vehicle models also in the clocked assembly process, is present a subframe 7 provided, in turn, the rear side rails 3 . 4 attributable and at the same via corresponding joints 8th is determinable. He thus represents an attachment.

In fulfillment of the task are the side rails 3 . 4 and / or the subframe 7 already in advance with a sufficient number of further joints 8th have been provided, which in turn are designed and arranged such that, depending on a currently desired equipment of the rear carriage 1 freely selectable one or more appropriately adapted aggregates 5a -N and / or attachments 6a -N modular in the area of said joints 8th on the rear side rails 3 . 4 and / or the subframe 7 are definable (cf. 2 to 7 ).

The subframe 7 acts essentially as an assembly aid and support means for the units 5a -N and / or attachments 6a -n.

In contrast, it may also be appropriate, instead of said subframe 7 one or more cross members 9a -N, which are also in the range of corresponding joints 8th on the two rear side rails 3 . 4 supporting, applying (not shown) or a combination of subframe 7 and crossbeams 9a -N ( 2 to 7 ), preferably also the cross member 9a -N via corresponding joints 8th for aggregates 5a -N and / or attachments 6a -N.

The joints 8th can realize in a conventional manner a force, shape and / or material connection between the joining partners by the jointing parties, for example, bolted together, riveted, welded and / or glued and / or connected by means of locking or other form-fitting elements.

2 now shows a first possible embodiment variant of the rear carriage 1 such that a multiple tank system with an attachment 6a in the form of a container, which in turn tanks 10a -C for alternative fuels, such as CNG and / or LPG, via joints 8th both on the subframe 7 as well as on associated cross members 9a . 9b is fixed, the subframe 7 by means of joints 8th on the rear side rails 3 . 4 and the crossbeams 9a . 9b also on the rear side rails 3 . 4 and / or on the subframe 7 are fixed.

3 shows a second possible embodiment variant by an attachment 6b in the form of a container with hose line for a fuel additive on the subframe 7 and / or on cross members 9a . 9b , which on the rear side members 3 . 4 are fixed, is attached.

4 further shows a third possible embodiment variant by instead of said attachment 6b in the form of a container with hose line for a fuel additive an attachment 6c is provided in the form of an energy store (battery).

5 further shows an attachment 6d in the form of a container for receiving a retractable rear row of seats 11 , against 6 an attachment 6e in the form of a conventional spare wheel well known per se.

Finally, with 7 a design variant shown which an aggregate 5a in the form of an electric drive with attachments 6f . 6g combined in the form of a compact power electronics and an energy storage, and which is particularly indicated for hybrid concepts.

Advantageously, the rear side rails have 3 . 4 , the subframe 7 and / or the cross member (s) 9a . 9b one or more uniform joints 8th for determining different aggregates 5a -N and / or attachments 6a -N on, reducing the number of joints 8th can be reduced to an absolutely necessary minimum (not shown in detail).

The operation of the invention is as follows:
First, at least one auxiliary frame is preferably in the cycled assembly process 7 provided and with one or more modular aggregates 5a -N and / or attachments 6a -N for installation in the rear 1 the vehicle body 2 equipped in the right position. Below is the appropriately populated subframe 7 in the sense of a "wedding" in the vehicle body 2 led into it or led to the same. The subframe 7 including possibly already in advance on the same attached units 5a -N and / or attachments 6a In this case, -n is, as shown in the present case, applied from below to lower contact surfaces, but can also be applied to inner and / or outer contact surfaces of the side members 3 . 4 the vehicle body 2 be set. Finally, the subframe 7 and, if necessary, the aggregates 5a -N and / or attachments 6a -N on the side rails 3 . 4 established. As already shown above, here are the side rails 3 . 4 and / or the subframe 7 in advance in such a way with a sufficient number of joints 8th been provided that, depending on a currently desired equipment of the rear carriage 1 freely selectable one or more of the aggregates 5a -N and / or attachments 6a -N in the area of said joints 8th on the rear side rails 3 and / or the subframe 7 are definable.

By the invention are also variants, which in turn on the subframe 7 and / or on the side rails 3 . 4 fixed additional cross member 9a Provide n, with recorded, which also advantageous in advance with a sufficient number of joints 8th have been provided.

Likewise, embodiments are also recorded, which take place on subframe 7 only on said cross member 9a -N as support and / or attachment means for the aggregates 5a -N and / or attachments 6a -N stop.

In contrast, is off 8th to take a suitable assembly concept, which differs from the above on the one characterized in that instead of a subframe 7 , in turn, with the vehicle body 2 or with their rear side rails 3 . 4 as an attachment is firmly connected, a subframe 7 as a pure tool in the manner of the assembly of the selected units 5a -N and / or attachments 6a -N in the rear 1 supportive entry frame is used, which thus not on the vehicle body 2 remains.

In this respect, when using such a starting frame, the same can also be used with aggregates 5a -N and / or attachments 6a -N and possibly one or more cross members 9a -N stocked and against the vehicle body 2 be set against, whereas here then during the clocked assembly process only the components in the form of said aggregates 5a -N and / or attachments 6a -N and cross member 9a -N on the side rails 3 . 4 be determined. The starting frame is then returned to a starting position for re-loading.

On the other hand, the subframe differs 7 according to 8th to the above also by the fact that this with both a module 12 consisting of one or more aggregates 5a -N and / or attachments 6a -N and possibly one or more cross members 9a -N for the rear car 1 , as well as with one or more aggregates 5a -N and / or attachments 6a -N and possibly one or more cross members 9a -N for the middle car 13 and / or the front end 14 the vehicle body 2 can be equipped. In the present case, the same is exemplary given additionally with a drive arrangement in the form of an internal combustion engine 5b equipped with gearbox and exhaust system.

This concept is of course also for subframes 7 applicable, which in turn remain installed as attachments to the vehicle body, and accordingly detected by the invention with (not shown).

For the skilled person easy to understand, is within the meaning of the invention the number of possible design variants almost unlimited, with their enumeration and Description would certainly go beyond the scope of the invention. Regardless, just this variety of design variants embraced by the invention, provided that the task by the invention at least according to the wording of claim 1 or claim 7 is fulfilled.

1

rear car

2

Automotive body

3

Side rail

4

Side rail

5a-n

Aggregate

6a-n

attachment parts

7

subframe

8th

joints

9a-n

crossbeam

10a-n

tanks

11

rear row

12

module

13

Mittelwagen

14

front end

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

• - DE 19950165 B4 [0002]
• - DE 10239501 A1 [0002]
• - DE 103123190 A1 [0002]
• DE 102005044907 A1 [0002]

Claims (7)

Motor vehicle body ( 2 ) with two in the rear carriage ( 1 ) of the same oppositely disposed rear side rails ( 3 . 4 ), at least one subframe ( 7 ) and / or one or more cross members ( 9a -N) the rear side members ( 3 . 4 ) and can be assigned to the same, and wherein the rear side members ( 3 . 4 ), the subframe (s) ( 7 ) and / or the cross member (s) ( 9a -N) in advance with a sufficient number of joints ( 8th ) and the same are designed and arranged such that, depending on a currently desired equipment of the rear carriage ( 1 ) freely selectable one or more correspondingly adapted aggregates ( 5a -N) and / or add-on parts ( 6a -N) like a module in the region of said joints ( 8th ) on the rear side member (s) ( 3 . 4 ), the subframe (s) ( 7 ) and / or the cross member (s) ( 9a -N) can be fixed. Motor vehicle body ( 2 ) according to claim 1, characterized in that the at least one subframe ( 7 ) with the rear side members ( 3 . 4 ) is permanently connectable attachment. Motor vehicle body ( 2 ) according to claim 1, characterized in that the at least one subframe ( 7 ) a tool of the type of assembly of the units ( 5a -N) and / or add-on parts ( 6a -N) in the hind calf ( 1 ) is supportive Einfahrrahmens. Motor vehicle body ( 2 ) according to claim 1 or 2, characterized in that the rear side members ( 3 . 4 ), Subframe ( 7 ) and / or cross members ( 9a -N) one or more uniform joints ( 8th ) defining different aggregates ( 5a -N) and / or add-on parts ( 6a -N). Motor vehicle body ( 2 ) according to one of claims 1 to 4, characterized in that the aggregates ( 5a -N) and / or add-on parts ( 6a -N) by one or more power units, by one or more energy storage, by one or more fuel storage, by one or more stores for a fuel additive, by one or more seat mounts for a rear row seat, by a conventional spare wheel well and / or by others known and optionally in the rear ( 1 ) units to be installed ( 5a -N) and / or add-on parts ( 6a -N) are formed. Motor vehicle body ( 2 ) according to one of claims 1 to 5, characterized in that the at least one subframe ( 7 ) is designed such that this with both aggregates ( 5a -N) and / or attachments ( 6a -N) for the rear section ( 1 ) as well as for the center and / or front end ( 13 . 14 ) of the motor vehicle body ( 2 ) can be equipped. Method for completing a rear carriage ( 1 ) a motor vehicle body ( 2 ) with one or more aggregates ( 5a -N) and / or attachments ( 6a -N) using at least one subframe ( 7 ) and / or one or more cross members ( 9a -N) such that a) the at least one subframe ( 7 ) and / or the cross member (s) ( 9a -N) with one or more modular aggregates ( 5a -N) and / or attachments ( 6a -N) for installation in said rear section ( 1 ) of the motor vehicle body ( 2 ) are equipped according to the position, b) following that with the unit (s) ( 5a -N) and / or attachment (s) ( 6a -N) equipped subframes ( 7 ) and / or the appropriately equipped cross member (s) ( 9a -N) in the sense of a "wedding" in the vehicle body ( 2 ) or led to it, and finally c) the at least one subframe ( 7 ), the cross member (s) ( 9a -N), the aggregate (s) ( 5a -N) and / or the attachment (s) ( 6a -N) at least two oppositely disposed rear side rails ( 3 . 4 ) of the motor vehicle body ( 2 ), where d) rear side members ( 3 . 4 ), Crossmember ( 9a -N) and / or subframes ( 7 ) in advance in such a way with a sufficient number of joints ( 8th ) that, depending on a currently desired equipment of the rear carriage ( 1 ) freely selectable one or more of the modular aggregates ( 5a -N) and / or add-on parts ( 6a -N) in the region of said joints ( 8th ) on the rear side member (s) ( 3 . 4 ), the cross member (s) ( 9a -N) and / or the subframe ( 7 ) are definable.