motor vehicle

Abstract

Motor vehicle with a front section comprising two engine longitudinal members (5a,b), with a passenger compartment (7) adjoining the front section, which is provided with a front wall (6) and two side walls (56), with a rear section adjoining the passenger compartment (7) and comprising two rear longitudinal members (14a,b), with two side longitudinal members (16a,b) connected to a floor of the passenger compartment (7), wherein each side longitudinal member (16a,b) is connected to the respective adjacent rear longitudinal member (14a,b) for force transmission by connecting a rear end of each side longitudinal member (16a,b) to a front end of each rear longitudinal member (14a,b) at a node (17a,b), wherein each engine longitudinal member (5a,b) extends a passenger compartment longitudinal member (10a,b, 27a,b) 28a,b, 59a,b, 65a,b) is arranged on the floor of the passenger compartment (7), wherein the respective front end (9a, 9b) of the respective passenger compartment longitudinal member (10a,b,27a,b, 28a,b, 59a,b, 65a,b) is connected to the rear end (8a, 8b) of the respective engine longitudinal member (5a, 5b) and the respective passenger compartment longitudinal member (10a,b, 27a,b, 28a,b, 59a,b, 65a,b) is attached with its respective rear end (9a, 9b, 60a,b, 66a,b) to the node (17a, 17b) which connects the respective rear longitudinal member (14a,b) to the respective side longitudinal member (16a,b), characterized in that the respective passenger compartment longitudinal member (10a,b, 27a,b, 28a,b, 59a,b, 65a,b) is connected with its respective rear end (9a, 9b, 60a,b, 66a,b) is arranged on a section of the respective lateral longitudinal member (16a,b) forming a node (63a,b), wherein the node (63a,b) is located in the longitudinal direction x of the vehicle in front of the node (17a, 17b) at a predetermined distance x, 63,17is located or - that the respective passenger compartment longitudinal member (10a,b, 27a,b, 28a,b, 59a,b, 65a,b) is arranged with its respective rear end (9a, 9b, 60a,b, 66a,b) on the respective cross member (22a,b) forming a node (69a,b), wherein the node (69a,b) is a predetermined distance y 69,17 in the transverse direction of the vehicle y to the node (17a, 17b).

Description

[0001] The invention relates to a motor vehicle according to the preamble of claim 1.

[0002] From FR 855 002, a passenger compartment with a floor is already known, in which a central tunnel for accommodating a drive shaft and an engine transmission is formed. Two spaced-apart longitudinal engine members are provided in front of an end wall of the passenger compartment, running symmetrically to a longitudinal axis of the vehicle. At one end of each longitudinal engine member facing the end wall, the member splits into a lateral longitudinal member, which runs between a front and a rear wheel arch of the vehicle, and a support member, which runs parallel to an adjacent side edge of the central tunnel. The respective support member terminates at a cross member formed in the floor. The cross member is located beneath seats arranged in the passenger compartment.

[0003] Further motor vehicle structures are known from German Patent Application DE 100 59 261 A1, German Patent DE 37 20 946 C2, Japanese Patent Application JP 2006- 264 541 A, German Patent Application DE 10 2004 050 102 A1 and German Patent Application DE 102 32 842 A1.

[0004] From German patent application DE 199 54 575 A1, from which the present invention is based, a vehicle frame with the features from the preamble of claim 1 is known.

[0005] The object of the invention is to create a motor vehicle in which the forces occurring during an impact on the motor vehicle are distributed and transmitted uniformly.

[0006] This problem is solved by the features of claim 1.

[0007] In a motor vehicle according to the invention, a front structure is provided, comprising two longitudinal engine members arranged symmetrically to a longitudinal axis of the vehicle and spaced apart from each other. A passenger compartment adjoins the front structure, comprising a front wall and two side walls. The side walls are spaced apart from each other according to the vehicle width and arranged symmetrically to the longitudinal axis of the vehicle. A rear structure adjoins the passenger compartment, comprising two rear longitudinal members arranged symmetrically to each other and spaced apart from each other, relative to the longitudinal axis of the vehicle. Furthermore, two lateral longitudinal members are provided, spaced apart from each other and arranged symmetrically to the longitudinal axis of the vehicle, and connected to a floor of the passenger compartment.

[0008] The respective lateral longitudinal member is connected to the respective adjacent rear longitudinal member for force transmission by connecting a rear end of the respective lateral longitudinal member to a front end of the respective rear longitudinal member at a node.

[0009] Each longitudinal engine frame member has a corresponding longitudinal passenger cell frame member attached to the floor of the passenger cell. This passenger cell frame member can run along the outer edge of a central tunnel, for example, parallel to the vehicle's longitudinal axis x or at an acute angle to the vehicle's longitudinal axis x. In the prior art, the respective passenger cell frame member typically terminates in front of or at a cross member (so-called heel plate) located below the rear seat and in front of a fuel tank.

[0010] Furthermore, the respective front end of each passenger compartment longitudinal member is connected to the rear end of the respective engine longitudinal member. Each passenger compartment longitudinal member extends to the junction where the respective rear end of the respective side longitudinal member is connected to the respective front end of the respective rear longitudinal member.

[0011] In an advantageous embodiment, the respective passenger cell longitudinal member is arranged with its respective rear end on a section of the respective side longitudinal member forming a node, wherein the node is located in the vehicle longitudinal direction x in front of the node at a predetermined distance at which the respective rear end of the respective side longitudinal member is connected to the respective front end of the respective rear longitudinal member.

[0012] In a further advantageous embodiment, the respective passenger cell longitudinal member is arranged with its respective rear end on the respective cross member forming a node, wherein the node has a predetermined distance in the vehicle transverse direction y to the node at which the respective rear end of the respective side longitudinal member is connected to the respective front end of the respective rear longitudinal member.

[0013] The continuous connection of the two engine longitudinal members to the respective passenger compartment longitudinal member and the respective rear longitudinal member directly or indirectly connected to them allows a force acting on the aforementioned longitudinal members, for example in an accident, to be transmitted via all longitudinal members. The design according to the invention results in an optimal force flow for elastic deformations, so-called stiffness load cases, and for plastic deformations, so-called crash load cases.

[0014] In an advantageous embodiment, the respective passenger cell longitudinal member has a straight profile or a straight section with a curved or angled profile.

[0015] The respective passenger compartment longitudinal member advantageously has a straight section running parallel to the vehicle longitudinal axis x and a section inclined outwards to the vehicle longitudinal axis x, which runs in the direction of the respective side longitudinal member or in the direction of the area of ​​the respective node where the respective rear end of the respective side longitudinal member is connected to the respective front end of the respective rear longitudinal member, or in the direction of the respective cross member which is formed below a rear seat in front of a cavity for a component, such as a fuel tank or the like, wherein the respective passenger compartment longitudinal member is arranged on the floor of the passenger compartment of the motor vehicle.

[0016] In an advantageous embodiment, a connection area is formed at a cross member, where the section of the respective passenger compartment longitudinal member running parallel to the vehicle's longitudinal axis x ends and the section running towards the area of ​​the respective side longitudinal member, the respective node where the respective rear end of the respective side longitudinal member is connected to the respective front end of the respective rear longitudinal member, or the respective cross member formed below a rear seat in front of a cavity for a component such as a fuel tank or the like begins. This connection area is formed on or in the immediate vicinity of a cross member at a distance t ≤ 10 cm in the vehicle's longitudinal direction x, wherein, in an advantageous embodiment, the cross member is located at the level of a B-pillar. A B-pillar is a body pillar that, for example, defines the door opening of a front side door.

[0017] Advantageously, the respective passenger cell longitudinal member is arranged in a straight line between the rear end of the respective engine longitudinal member and the respective rear end of the respective side longitudinal member, or the area of ​​the node where the respective rear end of the respective side longitudinal member is connected to the respective front end of the respective rear longitudinal member, or the outer end of the respective cross member, which is formed below a rear seat in front of a cavity for a component, such as a fuel tank or the like, on the floor of the passenger cell of the motor vehicle.

[0018] In an advantageous embodiment, the respective node at which the respective rear end of the respective side longitudinal member is connected to the respective front end of the respective rear longitudinal member is arranged at the level of a stiffening component or cross member that is formed below a rear seat in front of a cavity for a component, such as a fuel tank or the like. The cross member forms a border for an installation space. The installation space is laterally bounded by sections of the respective rear longitudinal member.

[0019] Furthermore, advantageously, another cross member surrounds the installation space at a distance towards the rear of the vehicle from the aforementioned front cross member.

[0020] Advantageously, motor vehicle components, such as energy carriers in the form of a fuel tank or in the form of batteries or the like, are arranged in the installation space.

[0021] In an advantageous embodiment, a connecting component is arranged between the respective rear end of the respective engine longitudinal member and the respective front end of the respective side longitudinal member.

[0022] Advantageously, a connection point between the respective rear end of the respective engine longitudinal member, the respective front end of the respective passenger compartment longitudinal member and the respective front end of the respective connecting component forms a node.

[0023] One embodiment of the invention is described below by way of example with reference to the drawings. These show: Fig. 1 a view from below of a floor of a motor vehicle, wherein the view shows, spaced apart and symmetrical to a longitudinal axis of the vehicle, an engine longitudinal member, a first embodiment of a passenger cell longitudinal member adjoining it and a rear longitudinal member connected thereto, Fig. 2. A view from below of the floor of a motor vehicle according to the Fig. 1, wherein in the Fig. 2 a second and a third embodiment of passenger cell longitudinal beams are shown, Fig. 3. A view from below of a partially depicted floor of a motor vehicle according to the Fig. 1, wherein in the Fig. 3. A force curve is shown in a frontal crash, illustrating the force flow over the engine longitudinal member, the passenger compartment longitudinal member, and the rear longitudinal member. Fig. 4. A view from below of the partially depicted floor of a motor vehicle according to the Fig. 1, wherein in the Fig. Figure 4 shows the force distribution in a rear-end collision, which shows the force distribution via the rear longitudinal member, the associated side longitudinal member, the associated passenger compartment longitudinal member and the adjoining engine longitudinal member. Fig. 5 A view from below of the partially depicted floor of the building in the Fig. 1 of the vehicle shown, wherein the force acts on a B-body pillar and a force distribution resulting from the side crash in the side longitudinal member, in the passenger compartment longitudinal member, in the rear longitudinal member and a node connecting the three aforementioned longitudinal members is shown. Fig. 6 A view from below of the partially depicted floor of the building in the Fig. 1 of the vehicle shown, wherein the force acts on a door of the body of the motor vehicle in front of a B-pillar, and a force distribution resulting from the side crash in the side longitudinal member, in the passenger compartment longitudinal member, in the rear longitudinal member and a node connecting the three aforementioned longitudinal members is shown, Fig. 7 A view from below of the partially depicted floor of a motor vehicle according to the Fig. 1, wherein in the Fig. 7 a fourth embodiment of a passenger compartment longitudinal member is shown, in which the end of the sloping section of the passenger compartment longitudinal member is attached to the corresponding lateral longitudinal member forming a first node and the end of the rear longitudinal member is attached to the corresponding lateral longitudinal member forming a second node, wherein the first node is spaced apart from the second node by a predetermined amount, and Fig. 8 A view from below of the partially depicted floor of a motor vehicle according to the Fig. 1, wherein in the Fig. Figure 8 shows a fifth embodiment of a passenger cell longitudinal member, in which the end of the sloping section of the passenger cell longitudinal member is attached to a cross member (heel plate) which is formed below a seat part of a rear seat, spaced apart from the side longitudinal member by forming a first node, and the end of the rear longitudinal member is attached to the side longitudinal member by forming a second node.

[0024] The Fig. Figure 1 shows a view from below of the floor 2 of a motor vehicle 1. An engine compartment 3 is formed at a front end 1a of the motor vehicle. Within the engine compartment 3, two spaced-apart engine longitudinal members 5a and 5b are formed symmetrically to a longitudinal axis 4 of the vehicle. In one embodiment, the engine compartment 3 terminates at an end wall 6 of a passenger compartment 7 (not shown).

[0025] At each rear end 8a, 8b of the respective engine longitudinal member 5a, 5b, a front end 9a, 9b of each passenger compartment longitudinal member 10a, 10b is arranged. The respective passenger compartment longitudinal member 10a, 10b covers a cross member 11 extending in the transverse direction y of the vehicle and a cross member 11a spaced rearward from it in the longitudinal direction x of the vehicle, and is connected to the cross members 11 and 11a. In the embodiment shown, the two passenger compartment longitudinal members 10a, 10b are spaced apart from a central tunnel 1b.

[0026] In the illustrated embodiment, each passenger compartment longitudinal member 10a, 10b has a straight section 29a, 29b that runs parallel to the vehicle's longitudinal axis x up to a position 35a, 35b, where the section 29a, 29b running parallel to the vehicle's longitudinal axis x ends and a section 30a, 30b extending outwards towards the respective node 17a, 17b begins. Position 35a, 35b is located in the Fig. 1 shown embodiment on the crossbeam 11 or in the immediate vicinity of the crossbeam 11 with a distance t ≤ 10 cm in the longitudinal direction of the vehicle x in the direction of the respective node 17a, 17b.

[0027] Each rear end 13a, 13b of the respective passenger compartment longitudinal member 10a, 10b is connected to a front end 12a, 12b of a respective rear longitudinal member 14a, 14b. In the illustrated embodiment, the shape of the respective rear longitudinal member 14a, 14b is widened at the level of a rear wheel arch 19a, 19b between two cross members 23 and 24. Fig. 1 is the rear longitudinal member 14a hatched to highlight the shape and course.

[0028] The respective rear end 13a, 13b of each passenger compartment longitudinal member 10a, 10b is further connected to a rear end section 15a, 15b of each lateral longitudinal member 16a, 16b, forming a node 17a, 17b. The respective lateral longitudinal member 16a, 16b runs between a front wheel arch 18a, 18b and the rear wheel arch 19a, 19b.

[0029] The position of each node 17a, 17b varies depending on the embodiment of the motor vehicle 2 within a region in the xy plane. Each node 17a, 17b is intended to connect the respective lateral longitudinal member 16a, 16b, the respective passenger compartment longitudinal member, and the respective rear longitudinal member 14a, 14b directly or indirectly in such a way as to achieve an optimal force flow between the respective three members.

[0030] The respective nodes 17a, 17b are formed at the level of a front edge 20 of a cavity 21. The cavity 21 serves to accommodate a component, in particular an energy carrier, such as a fuel tank or a battery assembly or the like. Adjacent to the edge 20 of the cavity 21 extending in the transverse direction y of the vehicle, a further cross member 22 is provided.

[0031] The cross member 22 can, for example, be designed as an angled sheet metal plate (as a so-called heel plate). The cross member 22 extends from the horizontal vehicle plane xy of the floor 2 at an angle upwards in the vehicle height direction z into the passenger compartment 7 and, in one embodiment, serves as a component of a lower part for the seat section of a rear seat. In the embodiment shown, the respective rear longitudinal members 14a, 14b are each connected to two further cross members 23, 24. In one embodiment, only one cross member may be provided. In another embodiment, a higher number of cross members is also possible, for example, three or four.

[0032] In a further embodiment, the respective rear end 8a, 8b of the respective motor longitudinal member 5a, 5b is connected to a respective front end 25a, 25b of the respective lateral longitudinal member 16a, 16b via a corresponding inclined connecting member 26a, 26b.

[0033] In the upper half of the Fig. Figure 2 shows a second embodiment of a passenger cell longitudinal member 27, which runs in a straight line between the rear end 8a of the engine longitudinal member 5a and the node 17a. The upper half of the Fig. The passenger cell longitudinal member 10a shown in the illustration is omitted in one embodiment.

[0034] In the lower half of the Fig. Figure 2 shows a third embodiment of a passenger compartment longitudinal member 28. The passenger compartment longitudinal member 28 extends with a straight longitudinal member section 29' up to position 35b' at the level of the cross member 11a. From position 35b' onwards, the passenger compartment longitudinal member 28b has a longitudinal member section 30'b extending obliquely outwards, the free end 31' of which is arranged at the node 17b. In another embodiment, only one cross member 11 or 11a is provided, the position of which can vary relative to the floor 2 of the motor vehicle 1.

[0035] The Fig. Figure 3 shows a load path or force distribution in a frontal crash in the beams arranged on the ground 2 or in the beams connected to the ground 2.

[0036] A first arrow 32 relates to the force F1 acting on the engine longitudinal member 5a via its front end 39a. The force F1 is transmitted via the rear end 8a of the engine longitudinal member 5a to the front end 9a of the straight section 29'a of the passenger compartment longitudinal member 28a of the Fig. 3 third embodiment shown, as indicated by arrow 34.

[0037] The impact force F1 is transmitted through the straight section 29'a of the passenger compartment longitudinal member 28a to the junction 35'a between the straight section 29'a and the obliquely outwardly running section 30'a of the passenger compartment longitudinal member 28a, as shown by the third arrow 36.

[0038] The force F1 is transmitted according to the fourth arrow 37 from the connection point 35'a via the obliquely outwardly running section 30'a of the passenger compartment longitudinal member 28a to the node 17a. A fifth arrow 38 shows the force path between the node 17a and the rear longitudinal member 14a. A sixth arrow 38' shows the force path following the fifth arrow 38 and the end 40a of the rear longitudinal member 14a.

[0039] The force F1 acting on the engine longitudinal member 5a can thus be transmitted from the front end 39a of the engine longitudinal member 5a to the rear end 40 of the rear longitudinal member 14a in a fixed support structure.

[0040] In the prior art, the respective passenger cell longitudinal member usually ends at position 35a, b at the level of the cross member 22 in front of the cavity 21. The force F1 is then introduced into the floor plate 2 and the cross member 22.

[0041] The Fig. Figure 4 shows the load path or force distribution in a rear-end collision in the beams arranged on the ground 2 or in the beams connected to the ground 2.

[0042] Arrow 41 represents a force F2 acting on the rear of the vehicle 1 (vehicle rear) 42. The force F2 is transmitted from a bumper (not shown) to the end 40a of the rear longitudinal member 14a. The force F2 is then transferred to the area of ​​the node 17a, as indicated by the second arrow 43. The force F2 then splits into a force F2, 16a and into a force F2 23 as shown in arrows 43 and 44. The force F2, 16a is passed along the lateral longitudinal member 16a to a front end 25a of the lateral longitudinal member 16a.

[0043] In the Fig. In the embodiment shown in Figure 4, an inclined connecting beam 26a is provided between the front end 25a of the side longitudinal member 16a and the rear end 8a of the engine longitudinal member 5a, via which the force

[0044] F 2,16a The force F2 is transmitted according to arrow 45 to the rear end 8a of the engine longitudinal member 5a. The applied force F2 is distributed via the support structure to the floor 2 and other sheet metal surfaces of the passenger compartment 7, and thus decreases with distance from the point of application 40a. The force arriving at the engine longitudinal member structure of the engine longitudinal members 5a, 5b is therefore small.

[0045] In one embodiment, the rear end 8a of the engine longitudinal member 5a, the front end 46a of the connecting member 26a and the front end 9a of the passenger compartment longitudinal member 28 form a node 47a.

[0046] Coming from node 17a, the force F 2, 28The force F2 is transmitted according to arrow 44 in the inclined section 30'a of the passenger compartment longitudinal member 28a and then according to arrow 49 in the straight section 29' of the passenger compartment longitudinal member 28 up to node 47a. From node 47a, a fraction of the force F2 is transmitted according to arrow 50 into the engine longitudinal member 5a.

[0047] Compared to the prior art, the supporting structure shown allows for a second load path via the inclined beam 28a into the longitudinal beam 29', in addition to the load path via the lateral longitudinal beam 16a at node 17a. This allows the applied forces to be distributed over a larger (sheet metal) area and a greater number of connecting elements such as spot welds, welds and / or adhesives, thus reducing the applied force level.

[0048] The Fig. Figure 5 shows a load path or force distribution during a side impact in the beams located on the ground 2 or in the beams connected to the ground 2. The conditions for the side impact are usually defined by consumer protection regulations and / or legislation. For example, the vehicle 2 impacts a standard pole at a speed of up to 32 km / h at a side angle of less than 90° or at an angle of 75° to the vehicle's longitudinal axis x.

[0049] The Fig. Figure 5 shows a view from below of the upper half of the floor 2 of the in the Fig. The force distribution resulting from the side impact in the side longitudinal member 16a, in the passenger compartment longitudinal member 28a, in the rear longitudinal member 14a and a node 17a connecting the three aforementioned longitudinal members 14a, 16a, 28a is shown in the Fig. 5 shown.

[0050] An arrow 51 symbolizes a lateral force F3. The lateral force F3 acts on the lateral longitudinal beam 16a according to arrow 52 with a force component F3. 16a , on the passenger compartment longitudinal beam 28 according to arrows 53 (F 3,30'a ) and 54 (F 3,29'a ) with a force component F3, 28 and onto the rear longitudinal member 14a according to arrow 55 with a force component F 3, 14a .

[0051] Arrow 53 shows the force component F acting on the inclined section 30'a of the passenger compartment longitudinal member 28a. 3,30'a The arrow 54 symbolizes the force component F3, 29'a in the straight section 29'a of the passenger compartment longitudinal beam 28a. The total force F3, 28 results from the sum of the forces in the straight section 29'a on the inclined section 30'a of the passenger compartment longitudinal beam 28a, i.e. F 3, 28 = F 3, 29'a + F 3,30'a

[0052] Furthermore, the lateral force F3 acting on a side wall 56 integrated B-pillar and the sill 16 of the passenger cell 7 or body is combined with a force component F 3,14a transferred via node 17a to the rear longitudinal beam 14a, as shown by arrow 55.

[0053] The passenger compartment longitudinal member 28a, with its connection to the engine longitudinal member 5a and the node 17a, forms a direct load path. The load on the floor panel 2 caused by the lateral force F3 is reduced by the passenger compartment longitudinal member 28a. This increases the load-bearing capacity of the connecting elements such as welds, adhesives, etc., and the stiffness of the passenger compartment.

[0054] The Fig. 6 differs from the Fig. 5 by the force F3 acting on a front door of the vehicle body in front of a central body pillar (B-pillar) and being introduced into the side longitudinal member 16a at the level of the (seat) cross members 11 and 11a. The force F3 is transmitted, according to arrows 52, 53, 54, 55, into the side longitudinal member 16a, the passenger compartment longitudinal member 28a, the rear longitudinal member 14a, and the floor 2. The seat cross members 11, 11a are shown with dashed lines because, in the illustrated embodiment, the seat cross members 11, 11a are arranged on the surface of the floor 2 facing the passenger compartment 7.

[0055] In the Fig. Figure 7 shows a fourth embodiment of a passenger compartment longitudinal member 59a, in which the end 60a of the inclined section 61a of the passenger compartment longitudinal member 59a is attached to a section of the side longitudinal member 16a at the level of or near the cross member 11a, forming a node 63a. The end 12a of the rear longitudinal member 14a is arranged at the end 15a of the side longitudinal member 16a at the level of or near the cross member 22a, forming a node 17a.

[0056] Node 63a is separated from node 17a by a predetermined amount x. 63 , 17 spaced x apart in the longitudinal direction of the vehicle, where the amount x 63 , 17 in an area of, for example, 5 cm ≤ x 63 , 17 ≤ 50 cm.

[0057] The double arrows 52, 52 63, 17, 53, 54, 55, 56 and 58 in the side longitudinal member 16a, in the sloping section 61a and in the straight section 62a of the passenger compartment longitudinal member 59a, in the sloping section and in the straight section of the rear longitudinal member 14a and in the engine longitudinal member 5a indicate the possible force distribution or the possible load paths.

[0058] A fifth embodiment of a passenger cell longitudinal member 65a is described in the Fig. Figure 8 shows the end 66a of the obliquely running section 67a of the passenger compartment longitudinal member 65a is arranged at an outer end 68a of the cross member 22a (heel plate), which is formed below a seat part of a rear seat, forming a node 69a.

[0059] The end 12a of the rear longitudinal member 14a is arranged at the end 15a of the side longitudinal member 16a at the level of or near the cross member 22a, forming the node 17a.

[0060] Node 69a is separated from node 17a by a predetermined amount y. 69,17 is spaced apart in the transverse direction of the vehicle y, where the amount y 69,17 in a range of, for example, 2 cm ≤ y 69,17 ≤ 20 cm.

[0061] Arrows 52, 53, 54, 55, 56, 58 and 71 in the lateral longitudinal member 16a, in the slanted section 67a and in the straight section 72a of the passenger compartment longitudinal member 59a, in the slanted section and in the straight section of the rear longitudinal member 14a, in the engine longitudinal member 5a and in the cross member 22a indicate the possible force distribution or the possible load paths. Reference symbol list: 1a front end motor vehicle 2 floors 3 Engine compartment 4 Vehicle longitudinal axis 5a, b Engine longitudinal beam 6 Front wall 7 passenger compartment 8a, b rear end of engine longitudinal member 9a, b rear end passenger compartment longitudinal beam 10a, b Passenger compartment longitudinal beams 11 crossbeams 11a Crossbeam 12a, b front end rear longitudinal member 13a, b rear end of carriageway longitudinal beam 14a, b Rear longitudinal beam 15a, b rear end of side longitudinal beam 16a, b lateral longitudinal beam 17a, b nodes 18a, b front wheel arch 19a, b rear wheel arch 20 Rand 21 Construction space 22a, b Crossbeam 23 additional crossbeams 24 additional crossbeams 25a, b front end of side longitudinal beam 26a, b Connecting beam 27a, b Passenger compartment longitudinal beams 28a, b Passenger compartment longitudinal beams 29a, b parallel section 29'a, b parallel section Section 30a, b 30'a, b section 31 free end 32 Arrow 34 Arrow 35a, b Connection area 35'a, b Connection area 36 third arrow 37 fourth arrow 38 fifth arrow 38' sixth arrow 39a front end engine longitudinal member 40a End of rear longitudinal member 41 Arrow 42 Vehicle rear 43 Arrow 44 Arrow 45 Arrow 46a, b front end connecting component 47a, b node 49 Arrow 50 Arrow 51 Arrow 52 Arrow 53 Arrow 54 Arrow 55 Arrow 56 side wall 58 Arrow 59a,b Passenger compartment longitudinal beams 60a,b rear end passenger compartment longitudinal beam Section 61a,b 62a,b parallel section 63a Node 65a, b Passenger compartment longitudinal beams 66a, b rear end passenger compartment longitudinal beam Section 67a,b 68 outer end crossbeam 69a Node 71 Arrow 72a,b parallel section

Claims

[1] Motor vehicle with a front section comprising two engine longitudinal members (5a,b), with a passenger compartment (7) adjoining the front section, which is provided with a front wall (6) and two side walls (56), with a rear section adjoining the passenger compartment (7) and comprising two rear longitudinal members (14a,b), with two side longitudinal members (16a,b) connected to a floor of the passenger compartment (7), wherein each side longitudinal member (16a,b) is connected to the respective adjacent rear longitudinal member (14a,b) for force transmission by connecting a rear end of each side longitudinal member (16a,b) to a front end of each rear longitudinal member (14a,b) at a node (17a,b), wherein each engine longitudinal member (5a,b) extends a passenger compartment longitudinal member (10a,b), 27a,b, 28a,b, 59a,b, 65a,b) is arranged on the floor of the passenger compartment (7), wherein the respective front end (9a,9b) of the respective passenger compartment longitudinal member (10a,b, 27a,b, 28a,b, 59a,b, 65a,b) is connected to the rear end (8a, 8b) of the respective engine longitudinal member (5a, 5b) and the respective passenger compartment longitudinal member (10a,b, 27a,b, 28a,b, 59a,b, 65a,b) is attached with its respective rear end (9a, 9b, 60a,b, 66a,b) to the node (17a, 17b) which connects the respective rear longitudinal member (14a,b) to the respective side longitudinal member (16a,b), , characterized by , that the respective passenger compartment longitudinal member (10a,b, 27a,b, 28a,b, 59a,b, 65a,b) is arranged with its respective rear end (9a, 9b, 60a,b, 66a,b) on a section of the respective lateral longitudinal member (16a,b) forming a node (63a,b), wherein the node (63a,b) is located in the vehicle longitudinal direction x in front of the node (17a, 17b) at a predetermined distance x 63,17is located or - that the respective passenger compartment longitudinal member (10a,b, 27a,b, 28a,b, 59a,b, 65a,b) is arranged with its respective rear end (9a, 9b, 60a,b, 66a,b) on the respective cross member (22a,b) forming a node (69a,b), wherein the node (69a,b) is a predetermined distance y 69,17 in the transverse direction of the vehicle y to the node (17a, 17b). [2] Motor vehicle according to claim 1, characterized by , that the respective passenger compartment longitudinal member (10a,b, 27a,b, 28a,b, 59a,b, 65a,b) has a straight course (27) or a straight section (29a, 29b, 29'a, 29'b, 62a,b, 72a,b) with a curved or angled course (30a,b, 61a,b, 67a,b). [3] Motor vehicle according to claim 2, characterized by, that the respective passenger compartment longitudinal member (10a,b, 27a,b, 28a,b, 59a,b, 65a,b) has a straight section (29a, 29b, 29'a, 29'b, 62a,b, 72a,b) running parallel to the vehicle longitudinal axis x and a section (30a, 30b, 30'a, 30'b, 61a,b, 67a,b) extending obliquely outwards to the vehicle longitudinal axis x, which runs in the direction of the respective lateral longitudinal member (16a, 16b) or in the direction of the area of ​​the respective node (17a, 17b) or in the direction of the respective cross member (22a,b), and is arranged on the floor (2) of the passenger compartment (7) of the motor vehicle. [4] Motor vehicle according to any of the preceding claims, characterized by, that a connecting area (35a, 35b, 35'a, 35'b), at which the section (29a, 29b, 29'a, 29'b, 62a,b, 72a,b) of the respective passenger compartment longitudinal member (10a,b, 27a,b, 28a,b, 59a,b, 65a,b) running parallel to the vehicle longitudinal axis x ends and the section (30a, 30b, 30'a, 30'b, 61a,b, 67a,b) running towards the area of ​​the respective lateral longitudinal member (16a, 16b), the respective node (17a, 17b), or the respective cross member (22a,b) begins, at a cross member (11, 11a) or in the immediate vicinity of a cross member (11, 11a) with is formed at a distance t ≤ 10 cm in the longitudinal direction x of the vehicle. [5] Motor vehicle according to claim 1 or 2, characterized by, that the respective passenger compartment longitudinal member (27) is arranged in a straight line between the rear end (8a, 8b) of the respective engine longitudinal member (5a, 5b) and the respective rear end (15a, 15b) of the respective side longitudinal member (16a, 16b) or the area of ​​the node (17a, 17b) or the outer end of the respective cross member (22a,b) on the floor (2) of the passenger compartment (7) of the motor vehicle. [6] Motor vehicle according to any one of the preceding claims, characterized by , that the respective area of ​​the node (17a, 17b) is arranged at the level of a stiffening component or crossbeam (22), that the crossbeam (22) forms an edge (20) for a construction space (21), that the construction space (21) is laterally bounded by sections of the respective rear longitudinal beam (14a, 14b). [7] Motor vehicle according to claim 6, wherein a further cross member (23) limits the installation space (21) at a distance from the cross member (22). [8] Motor vehicle according to claim 6 or 7, characterized by , that in the installation space (21) motor vehicle components, such as energy carriers in the form of a fuel tank or in the form of batteries or the like, are arranged. [9] Motor vehicle according to any one of the preceding claims, characterized by , that a connecting component (26a, 26b) is arranged between the respective rear end (8a) of the respective engine longitudinal member (5a, 5b) and the respective front end (25a, 25b) of the respective side longitudinal member (16a, 16b). [10] Motor vehicle according to any one of the preceding claims, characterized by , that a connection point between the respective rear end (8a, 8b) of the respective engine longitudinal member (5a, 5b), the respective front end (9a, 9b) of the respective passenger compartment longitudinal member (10a,b, 27a,b, 28a,b, 59a,b, 65a,b) and the respective front end (46a,b) of the respective connecting component (26a,b) forms a node (47a,b).

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