DE102008063448A1 - Motor vehicle structure, has arc-shaped side members angularly guided in longitudinal direction of vehicle and assembled at front and rear free ends that are connected to closed frame unit by cross beam part - Google Patents

Motor vehicle structure, has arc-shaped side members angularly guided in longitudinal direction of vehicle and assembled at front and rear free ends that are connected to closed frame unit by cross beam part

Info

Publication number
DE102008063448A1
DE102008063448A1 DE200810063448 DE102008063448A DE102008063448A1 DE 102008063448 A1 DE102008063448 A1 DE 102008063448A1 DE 200810063448 DE200810063448 DE 200810063448 DE 102008063448 A DE102008063448 A DE 102008063448A DE 102008063448 A1 DE102008063448 A1 DE 102008063448A1
Authority
DE
Germany
Prior art keywords
vehicle body
cross member
subframe
front
chassis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DE200810063448
Other languages
German (de)
Inventor
Ulrich Essig
Heinz-Jürgen Geurtz
Ali Oezkan
Tim Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Porsche SE
Original Assignee
Porsche SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Porsche SE filed Critical Porsche SE
Priority to DE200810063448 priority Critical patent/DE102008063448A1/en
Publication of DE102008063448A1 publication Critical patent/DE102008063448A1/en
Application status is Pending legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D25/00Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20Floors or bottom sub-units
    • B62D25/2009Floors or bottom sub-units in connection with other superstructure subunits
    • B62D25/2018Floors or bottom sub-units in connection with other superstructure subunits the subunits being front structures
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D21/00Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/11Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D25/00Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08Front or rear portions
    • B62D25/087Luggage compartments

Abstract

It is a vehicle body arranged with a bottom side and connected to the vehicle body chassis cross member, on which a front suspension is articulated and is connected to the chassis cross member on the vehicle body, a stiffening element. The stiffening element consists of a subframe arranged below the chassis and associated with this subframe comprising two longitudinally extending in the vehicle longitudinal member. These side members are angled or bent in the longitudinal direction of the vehicle and have at the front and at the rear free end connecting cross member parts, so that there is a closed frame unit.

Description

  • The The invention relates to a vehicle body with a bottom side arranged and connected to the vehicle body chassis cross member according to the preamble of claim 1.
  • From the DE 199 59 607 A1 For example, a vehicle body having a bottom-side brace arrangement is known which consists of a frame which is connected to a chassis cross member. Another connection of the frame is provided on the vehicle body.
  • Of the Invention is based on the object, a torsional stiffness of Front of the vehicle to increase and a crash support to ensure the boot floor.
  • These The object is achieved by the features of claim 1. Further advantageous features include the dependent claims.
  • The consist with the invention mainly achieved advantages in that by connecting a subframe with both a suspension cross member as well as being relatively stiff Areas of the vehicle body an essential stiffening of the Front of the vehicle and the area of the chassis crossmember achieved and also a central crash support for the boot floor is achieved in an advantageous manner. For this is provided according to the invention that the stiffening element arranged from a below the chassis cross member and with this associated subframe, the two in the vehicle longitudinal direction extending longitudinal beams comprises, in the longitudinal direction the vehicle executed angled and at the front and narrowing at the rear free end and in each case via at least one cross member are connected to a closed frame unit. After a preferred embodiment are extending in the vehicle longitudinal direction Longitudinal member in the longitudinal direction arcuate executed with a central kink area and form between an oval-shaped space.
  • In An embodiment of the invention, the subframe is in cross section from a U-shaped upper shell, with a plate-shaped Lower shell is connected and the two shells a hollow beam form. This version gives as a hollow beam Overall optimal rigidity of the subframe.
  • Of the Subframe is with its side rails between Longitudinal struts of the chassis crossmember arranged the front cross member part of the subframe - in Reference to the direction of travel seen - before and / or below arranged by a cross strut of the chassis cross member is. As a result, quasi with the cross member of the subframe another cross strut formed by the connection of the subframe with the chassis cross member and the vehicle body immediately causes an optimal stiffening.
  • advantageously, are according to the invention, the side members in the buckling area from angled or bent sections on inside and protruding tabs of the longitudinal struts of the chassis cross member arranged and fixed, wherein the forward section of the Side member each connected to the cross member of the chassis cross member is. By this connection of the subframe on the one hand with the two longitudinal struts of the chassis crossmember and on the other hand with the cross strut of the chassis cross member an optimal stiffening is achieved, especially after the invention of It is further provided that the front free ends of the side members of the Subframe are connected to the vehicle body, and that the rear free ends of the side members of the Subframe on one of the side members Continuing cross member connected, which at a center tunnel of the body is fastened. Through this connection of the subframe on the vehicle body relative to components high structural rigidity, can improve the static and dynamic stiffness can be achieved, in which also the suspension cross member is involved, so that a mutual influence regarding the stiffening of the front end is achievable.
  • To The invention further includes the front and rear cross member parts the subframe preferably from the plate-shaped lower shell formed and the front cross member part can one or more cross member parts exist, wherein at a plurality of cross member parts arranged separately from each other are.
  • Especially is through the chassis cross member in conjunction with the attached subframe according to the invention achieved that the chassis cross member a main load path for a lower Crashlastebene in the longitudinal direction of the vehicle and the subframe to increase the torsional rigidity contributes to the front end. Furthermore, by the tapered longitudinal member of the subframe a central crash support for the front Trunk floor achieved. Furthermore, the tank straps in the subframe integrated for fixing the fuel tank.
  • One Embodiment of the invention is in the drawings and will be described in more detail below.
  • It demonstrate:
  • 1 a view of a front end of a motor vehicle seen from below, with chassis cross member and subordinate subframe,
  • 2 the subframe seen from above with tank straps,
  • 3 a bottom view of the unit chassis cross member and subframe,
  • 4 a variant of the subframe with front smaller cross members or strike plates and
  • 5 a vertical section through the upper and lower shell of the subframe.
  • A front end 1 a vehicle body of a motor vehicle includes, inter alia, a front trunk 2 with boot floor 3 and behind - seen in the direction of travel F - a chassis cross member 4 with a suspension 5 and one below the chassis cross member 4 arranged so-called. Subframe 6 as stiffening element. The subframe 6 is with longitudinally L angled or bent side rails 7 . 8th provided, which end each with one or more cross member parts 9 . 10 or so-called strike plates are connected.
  • Preferably, the longitudinal beams extending in the longitudinal direction L of the vehicle 7 . 8th of the subframe 6 arcuate or omega-shaped and form between them an oval-shaped space 11 , The free ends 7a . 7b and 8a . 8b the side member 7 . 8th of the subframe 6 are narrowing together and are spaced from each other and are on the cross member parts 9 . 10 bridging the gap, interconnected and the subframe 6 thereby forms a total of a closed frame unit.
  • The subframe 6 preferably consists of a cross section u-shaped upper shell 12 that with a plate-shaped lower shell 14 connected and the two shells 12 and 14 form a hollow beam 15 , The bowls 12 and 14 are connected at the edges, preferably welded.
  • The subframe 6 is with its side rails 7 . 8th between the longitudinal struts 16 and 17 of the chassis crossmember 4 arranged and supported on inside tabs 20 and is on these in the points 21 . 22 attached. Another attachment of the subframe 6 done in the points 23 and 24 on a front cross strut 25 of the chassis crossmember 4 ,
  • The front free ends 7a and 8a the side member 7 . 8th of the subframe 6 are with the vehicle body preferably in the points 26 and 27 connected. A rear connection of the subframe 6 takes place with the vehicle body or with a vehicle tunnel 28 , preferably in the points 29 . 30 . 31 and 32 as well as with the vehicle body, preferably in the points 33 and 34 , Further attachments of the subframe 6 on the vehicle body are possible if necessary.
  • The front cross member 9 of the subframe 6 is one-piece, but can also be designed in several parts, such as 4 shows closer, ie there are several side by side arranged cross member parts or strike plates provided.
  • The rear cross member 10 is preferably part of the lower shell 14 and as a flap part of the upper shell 12 led out to the rear and by a profiling 36 strengthened.
  • At the top of the subframe 6 are several holders 37 arranged with straps 38 are provided for fixing a fuel tank.
  • 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 19959607 A1 [0002]

Claims (9)

  1. Vehicle structure with a base side arranged and connected to the vehicle body chassis cross member to which a front suspension is articulated and connected to the chassis cross member and the vehicle body, a stiffening element, characterized in that the stiffening element from a below the chassis cross member ( 4 ) and connected thereto subframe ( 6 ), the two running in the vehicle longitudinal direction of longitudinal members ( 7 . 8th ) which is angled in the longitudinal direction (L) of the vehicle and at the front and at the rear free end ( 7a . 8a and 7b . 8b ) are brought together narrowing and the free ends in each case via at least one cross member ( 9 . 10 ) are connected to a closed frame unit.
  2. Vehicle body according to claim 1, characterized in that the longitudinal members (15) extending in the longitudinal direction (L) ( 7 . 8th ) are executed running arcuately in the transverse direction and between them an oval-shaped space ( 11 ).
  3. Vehicle body according to claims 1 or 2, characterized in that the subframe ( 6 ) of a profiled in cross-section U-shaped upper shell ( 12 ), which with a plate-shaped lower shell ( 14 ) and the two shells ( 12 and 14 ) a hollow beam ( 15 ) form.
  4. Vehicle body according to claims 1, 2 or 3, characterized in that the subframe ( 6 ) with its longitudinal members ( 7 . 8th ) between longitudinal struts ( 16 . 17 ) of the chassis crossmember ( 4 ) is arranged, wherein the front cross member ( 9 ) of the subframe ( 6 ) - seen in relation to the direction of travel (F) - before and / or below a transverse strut ( 25 ) of the chassis cross member 4 is arranged.
  5. Vehicle body according to claims 1, 2, 3 or 4, characterized in that the longitudinal members ( 7 . 8th ) in the angled or bent portion (A) on inside and protruding tabs ( 20 ) the longitudinal strut ( 16 . 17 ) of the chassis crossmember ( 4 ) are arranged and fixed, and that front portions of the side members ( 7 . 8th ) with the cross strut ( 25 ) of the chassis crossmember ( 4 ) in the points ( 23 and 24 ) are connected.
  6. Vehicle body according to one of the preceding claims, characterized in that the front free ends ( 7a . 8a ) the side members ( 7 . 8th ) of the subframe ( 6 ) with the vehicle body in the points ( 26 . 27 ), and that the rear free ends of the side members ( 7 . 8th ) of the subframe ( 6 ) via a longitudinal support weiteretzendem cross member ( 10 ), which in the points ( 29 to 32 ) on a center tunnel ( 28 ) of the vehicle body is fixed.
  7. Vehicle body according to one of the preceding claims, characterized in that the front transverse member ( 9 ) consists of one or more cross member parts and several cross member parts are arranged separately from each other.
  8. Vehicle body according to one of the preceding claims, characterized in that the front and rear cross member parts ( 9 . 10 ) from the plate-shaped lower shell ( 14 ) are formed.
  9. Vehicle body according to one of the preceding claims, characterized in that on the inside of the subframe ( 6 ) on each side member ( 7 . 8th ) several brackets ( 37 ) for tank straps ( 38 ) are arranged.
DE200810063448 2008-12-17 2008-12-17 Motor vehicle structure, has arc-shaped side members angularly guided in longitudinal direction of vehicle and assembled at front and rear free ends that are connected to closed frame unit by cross beam part Pending DE102008063448A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200810063448 DE102008063448A1 (en) 2008-12-17 2008-12-17 Motor vehicle structure, has arc-shaped side members angularly guided in longitudinal direction of vehicle and assembled at front and rear free ends that are connected to closed frame unit by cross beam part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810063448 DE102008063448A1 (en) 2008-12-17 2008-12-17 Motor vehicle structure, has arc-shaped side members angularly guided in longitudinal direction of vehicle and assembled at front and rear free ends that are connected to closed frame unit by cross beam part

Publications (1)

Publication Number Publication Date
DE102008063448A1 true DE102008063448A1 (en) 2010-07-01

Family

ID=42220798

Family Applications (1)

Application Number Title Priority Date Filing Date
DE200810063448 Pending DE102008063448A1 (en) 2008-12-17 2008-12-17 Motor vehicle structure, has arc-shaped side members angularly guided in longitudinal direction of vehicle and assembled at front and rear free ends that are connected to closed frame unit by cross beam part

Country Status (1)

Country Link
DE (1) DE102008063448A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011101408A1 (en) * 2010-11-25 2012-05-31 Audi Ag Subframe for a motor vehicle
CN103448809A (en) * 2013-01-07 2013-12-18 浙江吉利汽车研究院有限公司杭州分公司 Vehicle butterfly-shaped reinforcing plate and front floor structure with same
WO2016162108A1 (en) * 2015-04-04 2016-10-13 Audi Ag Two-track vehicle
DE102017126376A1 (en) * 2017-11-10 2019-05-16 Benteler Automobiltechnik Gmbh Arrangement with a support strut for a motor vehicle

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2463310A (en) * 1944-02-07 1949-03-01 Henry J Kaiser Company Independently suspended motor vehicle characterized by a low center of gravity
DE767645C (en) * 1941-12-23 1953-03-02 Daimler Benz Ag Chassis for motor vehicles
DE69408068T2 (en) * 1993-10-05 1998-08-20 Smh Management Services Ag Vehicle frame, particularly for motor vehicles
DE19959607A1 (en) 1999-12-10 2001-06-13 Volkswagen Ag Vehicle body with a bottom strut assembly
DE19743039C2 (en) * 1997-09-29 2002-09-19 Horsch Gmbh & Co Kg carrier vehicle
DE102006008667A1 (en) * 2006-02-24 2007-09-06 Audi Ag Dome prop for reinforcement of self-supporting body of motor vehicle is cast component, especially pressure cast component; dome prop extends over entire length between spring domes in one piece
EP1490256B1 (en) * 2002-03-30 2009-02-11 Bayerische Motoren Werke Aktiengesellschaft Motor vehicle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767645C (en) * 1941-12-23 1953-03-02 Daimler Benz Ag Chassis for motor vehicles
US2463310A (en) * 1944-02-07 1949-03-01 Henry J Kaiser Company Independently suspended motor vehicle characterized by a low center of gravity
DE69408068T2 (en) * 1993-10-05 1998-08-20 Smh Management Services Ag Vehicle frame, particularly for motor vehicles
DE19743039C2 (en) * 1997-09-29 2002-09-19 Horsch Gmbh & Co Kg carrier vehicle
DE19959607A1 (en) 1999-12-10 2001-06-13 Volkswagen Ag Vehicle body with a bottom strut assembly
EP1490256B1 (en) * 2002-03-30 2009-02-11 Bayerische Motoren Werke Aktiengesellschaft Motor vehicle
DE102006008667A1 (en) * 2006-02-24 2007-09-06 Audi Ag Dome prop for reinforcement of self-supporting body of motor vehicle is cast component, especially pressure cast component; dome prop extends over entire length between spring domes in one piece

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011101408A1 (en) * 2010-11-25 2012-05-31 Audi Ag Subframe for a motor vehicle
EP2457807A3 (en) * 2010-11-25 2016-01-20 Audi AG Subframe for a motor vehicle
CN103448809A (en) * 2013-01-07 2013-12-18 浙江吉利汽车研究院有限公司杭州分公司 Vehicle butterfly-shaped reinforcing plate and front floor structure with same
CN103448809B (en) * 2013-01-07 2015-12-02 浙江吉利汽车研究院有限公司杭州分公司 A kind of automobile-used butterfly shape brace panel and adopt the front floor panel structure of this brace panel
WO2016162108A1 (en) * 2015-04-04 2016-10-13 Audi Ag Two-track vehicle
US10471993B2 (en) 2015-04-04 2019-11-12 Audi Ag Two-track vehicle
DE102017126376A1 (en) * 2017-11-10 2019-05-16 Benteler Automobiltechnik Gmbh Arrangement with a support strut for a motor vehicle

Similar Documents

Publication Publication Date Title
DE19634601B4 (en) Vehicle body structure
CN201049652Y (en) Vehicle body rear portion structure
JP5352682B2 (en) Body floor structure
DE10114047B4 (en) Subframe structure
DE10360498B4 (en) Front wall structure of a vehicle front end
US20020175538A1 (en) Vehicle body having a strutting configuration at a bottom side of the vehicle body
US3108836A (en) Frame construction for vehicles
DE102006013548B4 (en) As a subframe trained subframe for motor vehicles and vehicle body
DE102004018977B4 (en) Motor vehicle
DE10214372C1 (en) Bodywork with reinforcement, for vehicle, has rear ends of rear reinforcement braces fixed to fixing region of floor of tail end of vehicle
US7404596B2 (en) Vehicle front body structure
JP4655654B2 (en) Lower body structure
DE112008003307T5 (en) Floor assembly of a car body
JP2006193118A (en) Front part structure for car body
DE112007002077T5 (en) Rear vehicle body structure
JP2013129222A (en) Front subframe structure of vehicle
DE10232841A1 (en) Floor support arrangement on motor vehicles
EP1273502A1 (en) Motor vehicle body
US8998305B2 (en) Automotive rear vehicle body structure
DE102011056737A1 (en) Front end structure of a motor vehicle
DE112008001810T5 (en) Vehicle body frame structure
CN103930336B (en) The rear structure of vehicle body of automobile
KR100753713B1 (en) Vehicle front body structure
DE19812701B4 (en) Body structure for the front of a motor vehicle
DE102009046721A1 (en) Inner wheel arch holder for motor vehicles

Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8127 New person/name/address of the applicant

Owner name: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT, 7, DE

R012 Request for examination validly filed