DE102017200113A1 - Bumper cross member for a motor vehicle and motor vehicle with such a bumper cross member - Google Patents

Abstract

The invention relates to a bumper cross member for a motor vehicle (10) having a base body (14) which has a U-shaped profile and at least one upper flange portion (16) extending upward in the vertical direction of the vehicle body (14). and / or a lower flange portion (18) extending downwardly in the vehicle vertical direction on the underside of the base body (14), wherein at least a part of the upper flange portion (16) and / or the lower flange portion (18) extends in Vehicle transverse direction extending width of the base body (14) at least one connection portion (26) is formed, which extends over a height extending in the vehicle vertical direction H at least 20 mm.

Description

The invention relates to a bumper cross member for a motor vehicle, in particular a front main bumper cross member or a rear main bumper cross member according to the preamble of claim 1. Furthermore, the invention relates to a bumper cross member for a motor vehicle according to the preamble of claim 2 and a motor vehicle with such a bumper cross member ,

As the main bumper cross member serving front bumper cross member and rear bumper cross member are usually indirectly or directly connected to longitudinal members of a motor vehicle to form a frame-like, crash-stable structure. In this respect, the invention relates to a bumper cross member of a motor vehicle, which has a cross-sectionally U-shaped profile, and a bumper cross member, which has a closed hollow profile. Usually, at least between a front main bumper cross member and a right and a left side member each have a deformation element (also called "baffle" called) and a so-called bulkhead arranged. The bulkhead plate often protrudes from the longitudinal members in the vehicle transverse direction and / or in the vehicle vertical direction and serves inter alia as a connecting element to an inside of the longitudinal member arranged mounting bracket.

Out DE 10 2004 030 689 A1 is a serving as a simple support structure cross member for arrangement in a cockpit of a motor vehicle is known. On the cross member, a longitudinally extending holder for mounting an instrument panel is formed. The connection between the instrument panel and holder by means of a dovetailed connection. The in DE 10 2004 030 689 A1 described cross member is not a bumper cross member and not suitable as such.

Out DE 10 2011 113 473 A1 a bumper cross member of a motor vehicle is known which has a U-shaped cross-sectional shape, wherein the opening of the "U" is oriented in the direction of the vehicle front side. In addition to such aligned U-shaped bumper cross members, in practice also U-shaped bumper cross members are known, in which the opening of the "U" is oriented in the direction of the vehicle rear side. At the in DE 10 2011 113 473 A1 and at the known from practice bumper cross members extending in the vehicle vertical direction flanges are formed at the free, extending in the vehicle longitudinal direction legs, which usually have a height of up to 15 mm.

From practice beyond bumper cross members are also known, which are formed of a closed hollow profile.

The invention has for its object to provide a bumper cross member for a motor vehicle and a motor vehicle with such a bumper cross member available, which is simple and inexpensive to manufacture and it also allows to attach other components with little effort to the bumper cross member.

The object is achieved according to the invention with the features of the independent claims. Further practical embodiments and advantages of the invention are described in connection with the dependent claims.

An inventive bumper cross member for a motor vehicle has a base body having a cross-sectionally U-shaped profile, and further at least one, in the installed position in the motor vehicle - at the top of the body in the vehicle vertical direction upwardly extending upper flange and / or a Has in the installed position on the underside of the body in Fahrzeughochrichtung downwardly extending lower flange portion. At least one connecting portion is formed on the upper flange portion and / or on the lower flange portion at least over a part of the width of the base body extending in the vehicle transverse direction. In this case, the connection section extends over a height extending in the vehicle vertical direction of at least 20 mm. Preferably, the connection portion extends over a height of at least 25 mm, more preferably at least 30 mm, more preferably at least 35 mm or at least 40 mm in the vehicle vertical direction. The attachment portion may be formed in this case, in particular as an extended upper flange portion or an extended lower flange portion. In this case, the flange portion may simultaneously serve as a part of the attachment portion, so that the flange portion is used for the formation of the attachment portion.

The invention also relates to a bumper cross member for a motor vehicle having a base body with a closed hollow profile. Furthermore, at least one attachment section extending in the vehicle vertical direction is also arranged or formed on such a base body at least over part of the width of the base body extending in the vehicle transverse direction. Such a connection section preferably extends over a height extending in the vehicle vertical direction of at least 10 mm, more preferably at least 15 mm, especially preferably at least 20 mm and at least 25 mm. An inventive bumper cross member with a hollow profile may in particular have a plurality of chambers.

The two above-described bumper cross members according to the invention with an attachment section extending in the vehicle vertical direction allow easy mounting of one or more attachments. Collapsible structures for energy absorption, sensors, cameras and other monitoring devices of driver assistance systems come into consideration as attachments. Particularly suitable as attachment sections are, in particular, simple strips of material, in particular sheet-metal strips, in the form of an extension of the flange-like section (variant 1) or in the form of a correspondingly formed strip of material. Such connection sections can be formed or arranged on the base body in a particularly simple and cost-effective manner, in particular as will be described below with reference to individual examples. The formation of at least one connection section on a bumper cross member according to the invention has the further advantage that - compared to later on a bumper cross member to be mounted holders - for a mechanic on a production line of an automobile manufacturer, the position for connection of a corresponding attachment can already be predetermined, so that the Relative position of the attachment is fixed relative to the bumper cross member already after the production of the bumper cross member. This avoids assembly errors and associated deviations in the positioning of add-on parts.

The bumper cross members according to the invention described above are arranged in the installed position in a motor vehicle, in particular adjacent to a arranged as an outer skin element of a motor vehicle bumper fascia. In this case, between the bumper cross member and the bumper cover an elastic element, e.g. in the form of a foam element, be arranged. A clearance or intermediate space between the outer skin element and the bumper cross member may extend in particular in the vehicle longitudinal direction over a maximum of 50 cm, more preferably over a maximum of 40 cm or more preferably over a maximum of 30 cm.

Independently of this, a bumper cross member according to the invention preferably extends over at least 50%, preferably 60% and particularly preferably at least 70%, of the width of the motor vehicle extending in the vehicle transverse direction. In this case, an inventive bumper cross member may be arranged in a front end and / or a rear end of a motor vehicle.

In a practical embodiment of the bumper cross member according to the invention, the at least one connecting portion is integrally formed on the base body. Preferably, at least 2, 3, 4, 5, 6 and / or all connecting sections are integrally formed on the base body. A one-piece design of connection sections on the base body can be realized with low production costs. In particular, integrally formed connecting sections may be formed as upper flange sections elongated in the vehicle vertical direction and / or extended lower flange sections. It is particularly advantageous in this context, if the connection section is already provided in a material blank for the bumper cross member and - apart from the material costs and possibly a modification of a forming tool - the connection sections produced virtually no additional cost with high accuracy in a single operation with the bumper cross member itself can be. A one-piece design of connection sections on the bumper cross member also has the advantage that the connection sections - regardless of the correct execution of additional assembly work of holders or the like - has a known rigidity against forces acting in the vehicle longitudinal direction. This can be used to inform a motor vehicle driver and / or workshop personnel about potential damage to connection sections via a fault memory implemented in the motor vehicle in the event of detected force effects.

Alternatively, from a base body which has a hollow profile closed in cross section, such a connection section can be produced by roll forming. This can be achieved, in particular, by forming an upper subarea and / or a lower subarea by roll forming into a flat strip of material, in particular a two-layer or multi-layer strip of material consisting of a deformed section of the hollow profile.

In a further practical embodiment, the at least one connection section extends only over part of the total width of the main body extending in the vehicle transverse direction, in particular only over an actually required area. This is essentially done to save material, weight and cost. In this case, a plurality of connection sections are preferably provided, which have a width which extends only over a maximum of 20% of the total width of the entire bumper cross member. Particularly preferred are 1, 2, 3, 4, 5 or 6 Provided connection sections, each extending over only a maximum of 10% of the total width of the bumper cross member.

For example, arcuate, rectangular, trapezoidal or differently shaped strips of material which project upwards or downwards from adjacent regions of the base body, in particular upper flange sections and / or lower flange sections, are suitable as attachment sections.

In a further practical embodiment of the connection portion - in installation position in a motor vehicle - arranged at a viewed in the vehicle longitudinal direction of the nearest outer skin element of the motor vehicle side facing the base body. In this respect, reference is also made to a corresponding arrangement of a bumper cross member according to the invention in a motor vehicle. This has the advantage that tethered attachments can be mounted as close to the outer skin element. This is particularly advantageous when it comes to attachments that need as "unobstructed view" forward and / or back as possible, such as cameras and other sensors that are part of driver assistance systems. Thus, such attachments can on the one hand be set back relative to the outer skin element and thus protected, and on the other hand due to a position close to the outer skin element such that, due to only a short distance to components arranged in front of it, e.g. Ripping a radiator grille, still a wide angle in the transverse direction and in the vertical direction remains.

An attachment portion may also be at least partially (preferably completely) formed by a separate, firmly connected to the main body additional element. In this case - especially for reasons of cost - especially simple, flat additional elements suitable, such. simple plates. Such additional elements can be fastened to the base body in particular by means of welding, clinching, riveting, screwing and / or gluing. The formation of a connection section by means of an additional element connected to the main body allows a subsequent mounting of the connection section to an already produced bumper cross member, also by way of retrofitting. The already mentioned advantage of unnecessary mounting of holders or the like also remains in this case, especially if holding means (eg through holes, welding studs, weld nuts, welding screws, welding rivets, etc.) are already preassembled on the connecting portion and such holding means are correct relative to the bumper cross member are positioned.

As a particularly simple and cost-effective additional element is a flat formed cover plate (in particular a completely planar cover plate) suitable, which is brought to the upper flange portion and / or with the lower flange portion for conditioning. Such a cover plate can be made not only simple and inexpensive or as a standard component, but also inexpensive and at the same time with high strength at the upper and / or lower flange portion of the body of a U-shaped bumper cross member are attached.

Alternatively or in addition to this, at least one fastening element, in particular a nut, a screw, a bolt or a rivet, is fastened to the attachment as holding means. This may preferably be a weld nut, a weld screw, a weld stud and / or a weld rivet, which are each already fastened to the attachment section before the attachment is mounted. The provision of a fastener allows rapid mounting of an attachment to the assembly line. It is also possible for an element serving as part of a latching element to be formed on the connection section, e.g. a sub-element for a clip connection, e.g. a catch.

As a holding means can also be provided a passage opening. A through opening allows - as a particularly simple and universally usable holding means - in particular the implementation of screws, bolts and / or rivets for attachment of attachments to a connection section.

In a further practical embodiment, the base body is made of a metal material and processed by means of bending, punching and / or roll forming. As metal materials are particularly suitable aluminum and / or steel, in particular in the form of corresponding profiles. Punching and bending are particularly suitable for producing a bumper cross member according to the invention with a cross-sectionally U-shaped profile. In this case, the at least one connection section can advantageously be taken into account in a first stamping process and the reshaping can then take place in such a way that after the forming directly in the vehicle vertical direction upwards and / or downwardly extending strips of material result as connection sections. The order of the punching process and the forming process can be chosen arbitrarily.

Roll forming is particularly suitable for the formation of connecting sections on bumper cross members with closed hollow profiles. there can be rolled out of a region of the hollow profile of the connection portion, in particular by a region of the hollow profile is rolled out accordingly and thereby compressed and formed into a flat strip of material.

With regard to the above-described possibilities of a one-piece design, reference is also made to the corresponding manufacturing method, in particular to the one-piece production of a bumper cross member with a U-shaped profile cross-section and connecting sections by cutting or punching and forming (eg deep drawing) as well as on the one-piece production of a bumper cross member closed profile cross-section and forming at least one serving as a connecting portion strip of material by means of roll forming.

The basic body of a bumper according to the invention is preferably produced from an aluminum profile and / or a steel profile with a material thickness in a range from 1 mm to 4 mm, preferably 1.5 mm to 3.5 mm. The material thickness of a cover sheet is preferably in the range between 0.3 mm and 1.8 mm, preferably between 0.5 mm and 1.6 mm. The height of the base body (possibly with flange sections, but without additional connecting sections) is in particular in a range between 50 mm and 170 mm, preferably 80 mm and 140 mm.

The invention also relates to a motor vehicle having a bumper cross member as described above, wherein the bumper cross member extends over a majority of the width of the motor vehicle. The bumper cross member may be arranged as a rear bumper cross member in a rear of a motor vehicle or as a front bumper cross member, in particular as a front main bumper cross member in a front end of a motor vehicle.

• 1 eine erste Ausführungsform eines erfindungsgemäßen Stoßfängerquerträgers in einer perspektivischen Ansicht von schräg vorne,
• 2 den Stoßfängerquerträger aus 1 in einer Schnittdarstellung gemäß Linie II-II aus 1,
• 3 eine zweite Ausführungsform eines erfindungsgemäßen Stoßfängerquerträgers in einer perspektivischen Ansicht von schräg vorne,
• 4 den Stoßfängerquerträger aus 3 in einer Schnittdarstellung gemäß Linie IV-IV aus 3,
• 5 eine dritte Ausführungsform eines erfindungsgemäßen Stoßfängerquerträgers mit einem Anbauteil in einer Vorderansicht,
• 6 den Stoßfängerquerträger aus 5 ohne Anbauteil in einer Schnittdarstellung gemäß Linie VI-VI aus 5,
• 7 den Stoßfängerquerträger aus 5 in einer Schnittdarstellung gemäß Linie VI-VI aus 5, und
• 8 ein Kraftfahrzeug in einer Seitenansicht.

Further practical embodiments of the invention are described below in conjunction with the drawings. Show it:

• 1 a first embodiment of a bumper cross member according to the invention in a perspective view obliquely from the front,
• 2 the bumper cross member 1 in a sectional view according to line II-II 1 .
• 3 A second embodiment of a bumper cross member according to the invention in a perspective view obliquely from the front,
• 4 the bumper cross member 3 in a sectional view along line IV-IV 3 .
• 5 A third embodiment of a bumper cross member according to the invention with an attachment in a front view,
• 6 the bumper cross member 5 without attachment in a sectional view according to line VI-VI 5 .
• 7 the bumper cross member 5 in a sectional view according to line VI-VI 5 , and
• 8th a motor vehicle in a side view.

In 8th is a motor vehicle 10 shown in a side view. An inventive bumper cross member 12 is in the dashed areas marked on the motor vehicle 10 arranged. In this case, the bumper cross member 12 in a front area of the motor vehicle 10 (marked with V, dashed area marked) and / or in a rear area of a motor vehicle 10 (designated H, dashed marked area) may be arranged. These areas V and H are located in the vehicle longitudinal direction (x-direction) viewed in front of and behind a passenger compartment.

In 1 is a first embodiment of a bumper cross member according to the invention 12 shown. This bumper cross member 12 extends in the vehicle transverse direction (y-direction) over 70% of the total width of in 8th shown motor vehicle 10 ,

2 shows a cross section according to the in 1 registered line II-II through the bumper cross member 12 , The bumper cross member 12 has a basic body 14 on, the - as in 2 is clearly visible - is formed in cross-section u-shaped. The opening of the "U" in the vehicle longitudinal direction (x-direction) is directed forward. The main body 14 has on its upper side an upper flange portion 16 on, which extends in the vehicle vertical direction (z-direction) upwards. At the bottom of the body 14 is a lower flange section 18 formed, which extends in the vehicle vertical direction (z-direction) down. The upper flange section 16 and the lower flange portion 18 each have a height here H _F of 15 mm.

In the embodiment shown is the front main bumper cross member of in 8th shown motor vehicle 10 , He is accordingly in the in 8th V marked area of the motor vehicle 10 arranged.

How out 1 can be seen, extend on the left side and on the right side of the rear side of the bumper cross member 12 deformation elements 20 in the vehicle longitudinal direction (x-direction) to the rear. These are fixed to the bumper cross member 12 connected. Rear of the deformation elements 20 each is a bulkhead 22 firmly with the deformation elements 20 connected. Rear of the bulkhead plates 22 Close up longitudinal members, not shown, which together with the bumper cross member 12 and the deformation elements 20 form a crash structure.

The bulkhead plates 22 serve the connection of the crash structure to a mounting bracket (not shown), which usually in which between the deformation elements 20 and is arranged behind it, not shown longitudinal members.

In vehicle vertical direction (z-direction) downward support struts also extend 24 , which serve to connect a lower bumper cross member (not shown). The lower bumper cross member, not shown, extends in the vehicle transverse direction at least between the support struts 24 and is also referred to as a pedestrian protection cross member.

The in the 1 and 2 shown bumper cross member 12 points from the upper flange portion 16 in the vehicle vertical direction (z-direction) extending additional connection sections 26 on.

In the embodiment shown, there are four attachment sections 26 formed, which all in one piece with the main body 14 are formed and are so far upwardly extended flange sections.

The connection sections 26 are formed as trapezoidal material strips, which - measured from the upper edge of the adjacent upper flange sections 16 a height extending in the vehicle vertical direction (z-direction) H _A of 25 mm. The connection sections 26 are in the embodiment shown as extending in the vehicle vertical direction (z-direction) extending flat surfaces such that a step-free, planar extension of the upper flange portion 16 is trained. The upper flange section 16 and the lower flange portion 18 as well as the connecting sections 26 are on the body 14 arranged on the side facing the front of the motor vehicle side and thus on the side facing the closest outer skin element.

As in 1 is clearly visible, extend the connection sections 26 in each case only over a small part of the vehicle transverse direction (y-direction) extending width of the bumper cross member 12 , which is noticeably less than 10 percent of the width of the entire bumper cross member.

How out 2 is apparent in the connecting sections 26 in each case one passage opening 28 formed, in addition, in the embodiment shown, the passage opening 28 for the arrangement of a fastener 30 in the form of a welded rivet 48 was used. The weld rivet 48 is already fixed to the bumper cross member 12 mounted and used to prepare a later in the assembly process of the 8th shown motor vehicle assembly process for mounting an attachment (not shown). The weld rivet 48 is presently arranged such that its pin portion 32 in the vehicle longitudinal direction (x-direction) points to the rear and to the rear from the passage opening 28 protrudes.

In the following, the same reference numerals are used to describe further embodiments for identical or at least functionally identical elements, as for the description of the first embodiment.

In 3 and 4 is a second embodiment of a bumper cross member according to the invention 12 shown. This is also a bumper cross member 12 with a U-shaped in cross-section body 14 , At the base body 14 again are an upper flange section 16 and a lower flange portion 18 formed, each extending substantially in the vehicle vertical direction (z-direction) and in the vehicle transverse direction (y-direction). In this embodiment, two trapezoidal attachment portions extending in the vehicle vertical direction (z-direction) are provided 26 with the help of a separate, stuck with the main body 14 connected additional element 34 educated. At the additional element 34 In the embodiment shown, this is a flat cover plate 36 extending over much of the width of the bumper crossmember 12 extends to the upper flange portion 16 and the lower flange portion 18 lies flat and is firmly connected to these. In the embodiment shown, a welded joint was produced, here by means of spot welding. An upper row and a lower row of welds are in 3 recognizable.

The connection sections 26 in turn extend in the vehicle vertical direction (z-direction) over the upper flange portion 16 out and are arranged parallel to the upper flange portion 16, but offset from this forward. In the present case have the connection sections 26 a height H _A of 20 mm from the upper edge of the upper flange section 16 on.

Also have the connection sections 26 in each case one passage opening 28 on, being at the passage openings 28 in this embodiment, each a fastener 30 in the form of a welding stud 50 is fixed for connection of attachments. Here are the pin sections 32 in the vehicle longitudinal direction (x-direction) oriented to the front and are in the vehicle longitudinal direction forward of the through holes 28 the connection sections 26 out.

The the 1 to 4 shown bumper cross member 12 are made of aluminum profiles with a material thickness of 2 mm. The material thickness of the cover plate 36 here is about 1.2 mm. The height H _G of the basic body 14 in vehicle vertical direction (z-direction) is here about 80 mm. The first and second embodiments of the bumper cross member 12 are made by punching and bending.

In the in the 3 and 4 embodiment shown may also be advantageous according to a variant not shown in the figures, an additional element 34 or a cover plate 36 insert, in the opposite to an upper flange portion 16 or to a lower flange portion 18 in the high direction outstanding area has a greater, extending in the vehicle longitudinal direction material thickness, in particular such that the opposite to the respective flange portion 16 . 18 in the vehicle vertical direction extending connection section 26 has the same or a greater thickness than the connecting portion 26 in the area of the upper flange portion 16 or the connection section 26 in the region of the lower flange portion 18 , Thus, in particular, a reinforced and more rigid connection section 26 produced at the upper edge of the upper flange portion 16 or at the lower edge of the lower flange portion 18 can support, if from the front forces in the vehicle longitudinal direction on the connection section 26 act.

In the 5 to 7 is a third embodiment of a bumper cross member according to the invention 12 shown. In this bumper cross member 12 it is a bumper cross member 12 , the one main body 14 having a hollow profile closed in cross-section. Here is a lower chamber 38 provided in a vehicle in the vertical direction (z-direction) lower portion has a highly curved geometry. A middle chamber 40 has a predominantly rectangular geometry. From an upper chamber 42 In the present case, the connection section extends 26 , The hollow profile thus has in this embodiment, three in the vehicle vertical direction (z-direction) superimposed chambers 38 . 40 . 42 on.

The connection section 26 extends over a height H _A of 20 mm opposite the upper chamber 42 , To increase the flexural rigidity of the connection section 26 against forces in the vehicle longitudinal direction (x-direction) on the connection section 26 act, is the main body 14 in the area from which the connection section 26 from the upper chamber 42 extends in the vehicle longitudinal direction (x-direction) to the rear, provided with a bending stiffness increasing curvature. As in the 6 and 7 to recognize, is the curvature in the top of the body 14 educated.

The connection section 26 is present by roll forming from the upper chamber 42 rolled out.

As in 5 is clearly visible, extends the connection section 26 only over part of the vehicle transverse direction (y-direction) extending width of the body 14 , here about 75 percent. The connection section 26 is formed here as a material section extending over this width.

As if from a synopsis of 5 . 6 and 7 can be seen are in the connection section 26 four through holes 28 for connection as an attachment 44 formed collapsible structure. The collapsible structure has a plurality of energy absorbing chambers 38 . 40 . 42 in the assembled state - as in 7 shown - opposite the bumper cross member 12 protrude in the vehicle longitudinal direction (x-direction) for the purpose of controlled absorption of energy, in particular in the case of in the vehicle longitudinal direction (x-direction) from the front of a motor vehicle 10 acting forces.

The attachment 44 is in the embodiment shown in each case in the region of the passage openings 28 with a as a fastener 30 arranged blind rivet 46 provided. It can by screwing screws (not shown) from the front of the connection section 26 off on the bumper cross member 12 be attached.

The features of the invention disclosed in the present description, in the drawings and in the claims may be essential both individually and in any desired combinations for the realization of the invention in its various embodiments. The invention may be varied within the scope of the claims and in consideration of the knowledge of the person skilled in the art.

It is particularly pointed out once again that a bumper cross member 12 according to of the first and second embodiment may be arranged such that the opening of the "U" in the vehicle longitudinal direction (x-direction) is aligned to the front or to the rear. It is further pointed out that instead of the described fasteners 30 Other holding means can be used.

LIST OF REFERENCE NUMBERS

10

motor vehicle

12

Bumper crossmember

14

body

16

upper flange section

18

lower flange section

20

deformation element

22

Schott plate

24

support strut

26

connecting section

28

Through opening

30

fastener

32

journal section

34

additional element

36

cover sheet

38

lower chamber

40

middle chamber

42

upper chamber

44

attachment

46

blind rivet nut

48

Schweißniet

50

Switzerland bolts

V

front area

H

the backstage area

H _F

Height of the flange sections

H _A

Height of the connection area

H _G

Height of the main body

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

• DE 102004030689 A1 [0003]
• DE 102011113473 A1 [0004]

Claims (10)

Bumper cross member for a motor vehicle (10) having a base body (14) which has a U-shaped profile and at least one, at the top of the base body (14) in the vehicle vertical direction upwardly extending upper flange portion (16) and / or a has at the bottom of the base body (14) in the vehicle vertical direction downwardly extending lower flange portion (18), characterized in that at the upper flange portion (16) and / or at the lower flange portion (18) at least over a part of the vehicle transverse direction extending width of the base body (14) at least one connection portion (26) is formed, which extends over a height extending in the vehicle vertical height H _A of at least 20 mm. Bumper cross member for a motor vehicle (10) having a base body (14) having a closed cross-section hollow profile, characterized in that on the base body (14) at least one extending in the vehicle vertical direction connecting portion (26) at least over a part of the vehicle transverse direction extending width of the base body (14) is arranged or formed. Bumper cross member according to one of the preceding claims, characterized in that the at least one connecting portion (26) is integrally formed on the base body (14). Bumper cross member according to one of the preceding claims, characterized in that extending the at least one connection portion (26) only over part of the total, extending in the vehicle transverse direction width of the base body (14). Bumper crossmember according to one of the preceding claims, characterized in that the connection portion (26) is arranged on a viewed in the vehicle longitudinal direction of the next closest outer skin element of the motor vehicle (10) side facing the base body (14). Bumper cross member according to one of the preceding claims, characterized in that at least one connecting portion (26) is at least partially formed by a separate, fixedly connected to the base body (14) additional element (34). Bumper cross member according to the preceding claim, characterized in that the additional element (34) is a flat cover plate (36) which is brought into abutment with the upper flange section (16) and / or with the lower flange section (18). Bumper cross member according to one of the preceding claims, characterized in that in the at least one connection portion (26) at least one through hole (28) is formed and / or at least one fastening element (30) is attached. Bumper cross member according to one of the preceding claims, characterized in that the base body (14) made of a metal material and processed by means of bending, punching and / or roll forming. Motor vehicle with a bumper cross member (12) according to one of Claims 1 to 9 wherein the bumper cross member (12) extends over a majority of the width of the motor vehicle (10).

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