Assembly for a floor unit of a motor-vehicle body

Abstract

The invention relates to an assembly (1) for a floor unit (2) of a motor-vehicle body (3), having at least a first body component (5), which is in the form of a cast component (4), and at least a second body component (6), which is in the form of a cast component (4) and is separate from the first body component (5), wherein the first body component (5) has at least one receiving region (14) and the second body component (6) has at least one receiving element (15), which is designed to correspond to the receiving region (14) and is received in the receiving element (14) in order to create the form-fitting connection between the body components (5, 6).

Description

[0001] Assembly for a floor assembly of a motor vehicle body

[0002] The invention relates to an assembly for a floor assembly of a motor vehicle body according to patent claim 1.

[0003] DE 102010 055 954 A1 discloses a rear structure of a body for a motor vehicle, with two longitudinal members arranged at least partially opposite one another in the transverse direction of the vehicle and designed as cast aluminum components, which are connected to one another via at least two cross members arranged at a distance from one another in the longitudinal direction of the vehicle and designed as extruded aluminum profiles, wherein at least one floor part designed as an aluminum sheet is arranged at least partially between the cross members.

[0004] The object of the invention is to provide an assembly for a floor assembly of a motor vehicle body so that different construction variants of the motor vehicle body can be manufactured with particularly little effort and a mechanical load-bearing capacity of the motor vehicle body can be particularly increased.

[0005] This object is achieved according to the invention by an assembly for a floor assembly of a motor vehicle body having the features of patent claim 1.

[0006] Advantageous embodiments of the invention are the subject of the dependent patent claims and the description.

[0007] A first aspect of the invention relates to an assembly for a floor pan of a motor vehicle body. The motor vehicle body can be understood, in particular, as a body for a motor vehicle or the motor vehicle. The motor vehicle is designed, for example, as a passenger car or a commercial vehicle.

[0008] The motor vehicle body is preferably designed as a self-supporting body. The motor vehicle body, for example, at least partially defines an interior of the motor vehicle. The interior, which can be referred to in particular as the vehicle interior, can be understood in particular as a passenger compartment or passenger cell.

[0009] Preferably, the motor vehicle body, particularly in its fully manufactured state, comprises the floor assembly, and particularly the assembly. Preferably, the floor assembly, particularly in its fully manufactured state, comprises the assembly.

[0010] The floor assembly can be understood in particular as a lower part of the, in particular self-supporting, body with respect to a vertical direction of the motor vehicle. The floor assembly has, for example, connection points, in particular referred to as fixing points, for components of a chassis of the motor vehicle and / or a drive train of the motor vehicle. The floor assembly can in particular be referred to as a body floor assembly. For example, the floor assembly has at least one, in particular load-bearing, longitudinal structure or transverse structure, preferably a plurality of longitudinal structures and / or transverse structures. The fact that the longitudinal structure or the transverse structure is designed to bear loads can in particular be understood to mean that the longitudinal structure or the transverse structure is designed to absorb accident-related loads in the event of an accident, for example a side collision and / or a frontal collision.The longitudinal structure or the transverse structure can, for example, meet requirements regarding a frontal impact, side impact, and / or rear impact. For example, the floor assembly, in particular the longitudinal structure and / or the transverse structure, is made at least partially, in particular predominantly or entirely, of metal, for example, steel and / or aluminum.

[0011] The assembly comprises at least one first body component formed as a cast component. In other words, the first body component is or will be produced by casting. The assembly comprises at least one second body component formed as a cast component and formed separately from the first body component, in particular connected to the first body component. In other words, the second body component is or will be produced by casting.

[0012] The fact that the body components are formed separately from one another can be understood, in particular, to mean that the body components are not or will not be manufactured from a single piece. The body components are or will be manufactured independently of one another and are or will be connected to one another after their respective manufacture. The assembly, in particular the floor pan, thus has a construction with more than one, in particular separate, cast component.

[0013] The respective body component is, for example, at least partially, in particular predominantly or entirely, made of aluminum. In other words, the respective body component is designed as a cast aluminum component. For example, the respective body component is or will be manufactured using aluminum die casting.

[0014] In order to be able to produce different construction variants of the motor vehicle body with particularly little effort and to be able to particularly increase the mechanical load-bearing capacity of the motor vehicle body, it is provided that the first body component has at least one receiving region and the second body component has at least one receiving element designed to correspond to the receiving region, which is received or arranged in the receiving region for the positive connection of the body components, in particular at least partially, predominantly or completely. In other words, the body components are connected to one another in a positive connection via the receiving element received or arranged in the receiving region. This means that a positive connection is provided or formed between the body components.In other words, at least one positive connection between the body components is or will be formed via the receiving element arranged in the receiving area.

[0015] In particular, the body components are positively connected to one another in at least two spatial directions via the receiving element received in the receiving area. This means that the body components are supported on one another in at least two spatial directions, in particular directly, via the positive connection or the positive connection. In other words, the first body component has at least one wall which at least partially, in particular predominantly or completely, delimits the receiving area, and on which wall the receiving element received in the receiving area is supported, in particular directly, in at least two spatial directions. The receiving area is designed, for example, as a recess and / or as an opening. The receiving element protrudes, for example, from a base body of the second body component. For example, the receiving element is designed as a pin.Thus, the positive connection or the positive locking is designed, for example, as a positive tenon connection. Thus, a positive tenon connection, formed in particular by the receiving element and the receiving area, can be provided between the body components, which are particularly referred to as cast components.

[0016] The invention is based in particular on the following findings and considerations: In principle, it is conceivable to design the assembly, in particular the floor pan, in a construction in which almost an entire vehicle rear structure and / or vehicle front structure of the assembly or floor pan is represented in one part, i.e. is formed in one piece or in one piece. However, when developing a vehicle architecture with different vehicle classes and different body shapes, it is advantageous to be able to use a particularly large number of identical parts and / or synergy parts. The different vehicle classes are, for example, lower class (UKL), small class (KKL), medium class (MKL) and large class (GKL). The body shapes are, for example, sedan, SUV, convertible, coupe, van or touring.Particularly large, integrated cast components or cast structures can have the disadvantage that individual, specific requirements for the body structure, which may be determined, for example, by different vehicle classes and / or body shapes, can always involve compromises. For example, a particularly large, integrated cast rear section, which is intended to accommodate various seat structure classes, each with its own specific screw connection points, could always incorporate all possible attachment points or at least be prepared for them. This can lead to disadvantages in terms of cost, weight, or the like. It can therefore be advantageous to be able to combine various smaller components, especially cast components, into a kind of modular system in order to create an optimal body configuration for the specific vehicle type.Depending on the number of units produced, the number of configurations in a body architecture, plant utilization, and location, a technical and ecological optimum can, for example, also be linked to a complex business analysis. Particularly high forces can act at the interfaces between two cast components, especially those that run separately from one another, which can generally absorb particularly high loads, particularly in a side or rear-end crash. Due to the size of the cast components, which can, for example, extend across the entire width of the vehicle and / or the entire length of the rear or the entire length of the front of the vehicle, a particularly complex kinematics can arise in the event of a crash, in which the main loads must be absorbed and transferred in different directions in a cast interface facing the impact and in a cast interface facing away from the impact.

[0017] In the assembly according to the invention, at least one of the cast components can be designed specifically for a specific construction variant. Because the cast components are designed separately from one another, the manufacturing effort for producing different construction variants of the motor vehicle body can be kept particularly low. Furthermore, the positive connection, in particular via the element accommodated in the receiving area, can create a particularly secure, in particular particularly mechanically resilient, connection between the body components. This can significantly increase the mechanical resilience of the assembly. This means that the safety, in particular passive safety, of the motor vehicle or the motor vehicle body can be significantly increased, particularly in the event of an accident.For example, particularly in the event of a side-on collision, load transfer to the assembly, particularly at the interface between the body components, can occur in the transverse direction of the vehicle, for example, through the tenon joint, particularly the tenon-and-groove joint, in a pushing and pulling manner. This allows for particularly advantageous, and particularly robust, load transfer. Overall, it is evident that a vehicle body can be created with positively connected body components.

[0018] In a further embodiment, it is provided that the assembly is designed as a front section or as a rear section of the floor assembly. In other words, the assembly is designed as a front end or as a rear end of the floor assembly, in particular of the motor vehicle body. This means that the assembly is designed as a front structure or as a rear structure of the floor assembly, in particular of the motor vehicle body. As a result, the front section or the rear section, in particular for the different design variants of the motor vehicle body, can be manufactured with particularly little effort and can be designed to be particularly mechanically resilient. In particular, because the front section or the rear section is a fundamental component of the floor assembly, the manufacturing effort for the floor assembly, in particular of the motor vehicle body, and the mechanical resilience of the floor assembly, in particular of the motor vehicle body, can be particularly increased.

[0019] The front end can be understood in particular as a front area of ​​the floor assembly, in particular of the motor vehicle body, relative to the vehicle's longitudinal direction. The rear end can be understood in particular as a rear area of ​​the floor assembly, in particular of the motor vehicle body, relative to the vehicle's longitudinal direction. The vehicle's longitudinal direction can be understood in particular as a longitudinal direction of the motor vehicle body and / or the motor vehicle.

[0020] In a further embodiment, it is provided that at least one of the body components extends, in particular in the installed position of the assembly in the motor vehicle body or the motor vehicle, in the transverse direction of the vehicle over at least 70 percent, in particular at least 80, 90, 95 or 100 percent, of a total width of the floor assembly, in particular of the motor vehicle body, extending in the transverse direction of the vehicle. In other words, at least one of the body components is at least 70 percent as wide as the total width of the floor assembly, in particular of the motor vehicle body, in relation to the transverse direction of the vehicle. This means that the width of at least one of the body components, in particular of both body components, is at least 70 percent of the total width of the floor assembly, in particular of the motor vehicle body. At least one of the body components is therefore designed as a particularly large or particularly wide component in relation to its width.This allows particularly large body structures to be connected to one another in a form-fitting manner, which minimizes the manufacturing costs of the body. Furthermore, the various construction variants can be manufactured with particularly low costs. The transverse direction of the vehicle can be understood, in particular, as the transverse direction of the vehicle body and / or the vehicle.

[0021] Alternatively or additionally, it is provided, for example, that the body components together extend over at least 50 percent, in particular over at least 60, 70, 80 or 90 percent, of a total length of the front end or the rear end of the floor assembly, particularly in the installed position of the assembly in the motor vehicle body or motor vehicle, extending in the longitudinal direction of the vehicle. In other words, the body components together, i.e. together or in total, are at least half as long as the total length of the front end or the rear end in relation to the longitudinal direction of the vehicle. This means that a total length of the body components extending in the longitudinal direction of the vehicle amounts to at least 50 percent, in particular at least 60, 70, 80 or 90 percent, of the total length of the front end or the rear end.The body components are thus formed together into a particularly long assembly structure, especially the floor pan. This allows particularly large body structures to be connected to one another in a form-fitting manner, which keeps the manufacturing costs of the body particularly low. Furthermore, the various construction variants can be manufactured with particularly low costs.

[0022] Because the body components are particularly wide and long, the assembly is a fundamental component of the floor assembly, especially of the vehicle body. The aforementioned advantages of particularly low-cost manufacturing and particularly high mechanical strength can therefore be achieved to a particularly large and significant extent.

[0023] In a further embodiment, it is provided that at least one of the body components, in particular the first and / or the second body component, is designed as a frame. This means that at least one of the body components is frame-shaped or designed as a frame part. The frame or a frame structure of the floor assembly can particularly improve the mechanical load-bearing capacity of the motor vehicle body, in particular its crash behavior. In particular, a modular system comprising the frame can be created, whereby the various construction variants can be manufactured with particularly low effort.

[0024] The frame is designed, for example, as a rear frame or as a front frame, in particular of the floor assembly or the motor vehicle body. The frame has, for example, two transverse elements, in particular spaced apart from one another in the longitudinal direction of the vehicle, and two longitudinal elements, in particular spaced apart from one another in the transverse direction of the vehicle. A respective main extension direction of the respective transverse element preferably runs at least substantially in the transverse direction of the vehicle. A respective main extension direction of the respective longitudinal element preferably runs at least substantially in the longitudinal direction of the vehicle. The respective transverse element is designed, for example, as a cross member. The respective longitudinal element is designed, for example, as a longitudinal member. The respective transverse element can be understood, in particular, as a respective transverse structure. The respective longitudinal element can be understood, in particular, as a respective longitudinal structure.

[0025] Preferably, the first body component and the second body component are each formed in one piece, in particular a monoblock. Alternatively or additionally, the second body component is formed in one piece, in particular a monoblock. Thus, the first body component does not comprise, for example, any components formed separately from one another and, in particular, subsequently connected to one another. Alternatively or additionally, the second body component does not comprise any components formed separately from one another and, in particular, subsequently connected to one another.

[0026] In a further embodiment, it is provided that the receiving element received or arranged in the receiving area is supported at least substantially in the transverse direction of the vehicle and at least substantially in the vertical direction of the vehicle, and in particular at least substantially in the longitudinal direction of the vehicle, preferably directly, on the wall of the first body component that at least partially delimits the receiving area. This means that the body components are supported against one another via the wall and the receiving element at least substantially in the transverse direction of the vehicle and in the vertical direction of the vehicle, and in particular in the longitudinal direction of the vehicle.In other words, the body components are positively connected to one another via the positive connection in at least two spatial directions, in particular in three spatial directions, for example, in the transverse direction of the vehicle, in the vertical direction of the vehicle, and in particular in the longitudinal direction of the vehicle. This allows a particularly secure mechanical connection between the body components to be achieved, thereby significantly increasing the mechanical load-bearing capacity of the vehicle body.

[0027] In a further embodiment, it is provided that the receiving opening and the receiving element each have a respective U-shaped cross-section. This means that the receiving opening has a first U-shaped cross-section and the receiving element has a second U-shaped cross-section. In other words, the receiving opening and the receiving element are each shaped or formed, at least in part, in particular predominantly or completely, in a U-shape, in particular as a U-profile. This makes it possible to achieve a particularly secure positive connection between the body components. Furthermore, the body components, in particular the positive connection, can be manufactured with particularly little effort.

[0028] In a further embodiment of the invention, it is provided that the body components are screwed and / or glued to one another, in particular in addition to the positive connection or the form-fitting connection. In other words, the body components are connected to one another by means of screws, i.e. via at least one screw connection, and / or by gluing, in particular directly. This makes it possible to realize a particularly secure, in particular mechanically resilient, additional connection between the body components with respect to the positive connection. In particular, security against loosening of the form-fitting connection can be particularly increased. The mechanical resilience of the motor vehicle body, in particular of the floor assembly, can thus be particularly increased.

[0029] In a further embodiment, it is provided that the receiving element is screwed and / or glued, in particular directly, to the wall of the first body component that at least partially delimits the receiving area. This means that the screwing and / or gluing of the body components is or is effected through the mediation of the receiving element and the wall that at least partially delimits the receiving area. In other words, the receiving element has at least one connection area via which the receiving element received in the receiving area is screwed and / or glued, in particular directly, to the wall of the first body component that at least partially delimits the receiving area. This makes it possible to particularly increase security against loosening the positive connection, i.e. against unwanted removal of the receiving element from the receiving area.This allows the mechanical load-bearing capacity of the floor assembly or the vehicle body to be significantly improved.

[0030] In a further embodiment, it is provided that at least one of the body components, in particular the first and / or the second body component, has at least one rib structure with a plurality of ribs. This means that the rib structure has a plurality of ribs which, for example, run obliquely or perpendicular to one another and / or, for example, intersect. The rib structure can be understood in particular as a reinforcing structure or stiffening structure which has a plurality of ribs. In other words, at least one of the body components is stiffened or reinforced, in particular locally, with the rib structure having the ribs. The rib structure can particularly increase the rigidity of the first or second body component. As a result, the mechanical load-bearing capacity of the assembly or of the floor assembly can be particularly improved.In particular, the rigidity and mechanical strength can be improved with a particularly low weight. The weight of the assembly can thus be kept particularly low.

[0031] In a further embodiment, it is provided that the first body component has at least one second receiving area, which is spaced apart from the receiving area, in particular in the vehicle transverse direction and / or in the vehicle longitudinal direction, and the second body component has at least one second receiving element, which is spaced apart from the receiving element, in particular in the vehicle transverse direction, and is designed to correspond to the second receiving area. The second receiving element is received in the second receiving element, in particular at least partially, predominantly or completely, for the purpose of connecting the body components, in particular directly, in a form-fitting manner. In other words, the body components are connected to one another, in particular directly, in a form-fitting manner, via the second receiving element received or arranged in the second receiving area.This means that at least one second positive connection, different from the positive connection, is provided or formed between the body components. In other words, at least one second positive connection is or will be formed between the body components via the second receiving element arranged in the second receiving area.

[0032] In particular, the body components are positively connected to one another in at least two spatial directions via the second receiving element received in the second receiving area. This means that the body components are supported against one another in at least two spatial directions, in particular directly, via the second positive connection. In other words, the first body component has at least one second wall that at least partially, in particular predominantly or completely, delimits the first receiving area, and against which the second receiving element received in the second receiving area is supported, in particular directly, in at least two spatial directions.

[0033] The second receiving area is designed, for example, as a recess and / or an opening. The second receiving element protrudes, for example, from the base body of the second body component. For example, the second receiving element is designed as a pin. Thus, the positive connection or the second positive connection is designed, for example, as a positive pin connection. A positive pin connection, formed in particular by the second receiving element and the second receiving area, can therefore be provided between the body components, which are particularly referred to as cast components.

[0034] The receiving elements, for example, are of identical design. The receiving areas, for example, are of identical design.

[0035] It is preferably provided that the receiving element received in the receiving area and the second receiving element received in the second receiving area are arranged in the vehicle transverse direction, that is to say with respect to the vehicle transverse direction, on mutually different, in particular mutually opposite, sides of the floor assembly, in particular of the motor vehicle body.This means that the receiving area, which can in particular be referred to as the first receiving area, and the receiving element, which can in particular be referred to as the first receiving element, are arranged in the vehicle transverse direction or with respect to the vehicle transverse direction on a first side of the floor assembly, in particular of the motor vehicle body, and the second receiving area and the second receiving element are arranged in the vehicle transverse direction or with respect to the vehicle transverse direction on a second side of the floor assembly, in particular of the motor vehicle body, which is different from the first side and in particular opposite the first side. In other words, the body components are positively connected to one another on both sides with respect to the vehicle transverse direction, in particular via the receiving areas and the receiving elements.This allows the body components to be connected to one another particularly securely. In particular, the mechanical strength of the assembly, in particular the floor pan, can be significantly improved. For example, a distance extending in the transverse direction of the vehicle between the receiving elements amounts to at least 50 percent, in particular at least 60, 70, or 80 percent, of a total width extending in the transverse direction of the vehicle of the first body component and / or the second body component, in particular of the assembly, for example the floor pan or the vehicle body.

[0036] A further aspect relates to a floor assembly for a motor vehicle body with at least one assembly according to the invention. Advantages and advantageous embodiments of the further aspect are to be regarded as advantages and advantageous embodiments of the invention, and vice versa. Also disclosed is a motor vehicle body with a floor assembly having at least one assembly according to the invention.

[0037] Further features of the invention emerge from the claims, the figures, and the description of the figures. The features and combinations of features mentioned above in the description, as well as the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures, can be used not only in the respective specified combination, but also in other combinations or on their own.

[0038] The invention will now be explained in more detail using a preferred embodiment and with reference to the drawings. They show:

[0039] Fig. 1 is a schematic and perspective partial sectional view of an assembly according to the invention;

[0040] Fig. 2 is a schematic plan view and two detailed views of an assembly according to the invention;

[0041] Fig. 3 is a schematic partial sectional view of an inventive

[0042] Assembly to illustrate a positive connection, Fig. 4 a schematic further partial sectional view of an inventive

[0043] Assembly to illustrate a positive connection;

[0044] Fig. 5 is a schematic detailed view of an inventive

[0045] Assembly to illustrate a positive connection;

[0046] Fig. 6 is a schematic perspective view of an inventive

[0047] Assembly according to another embodiment;

[0048] Fig. 7 is a schematic and perspective detailed view of the assembly according to the invention shown in Fig. 6;

[0049] Fig. 8 is a schematic perspective view of a first body component and a second body component of an assembly according to the invention according to a further embodiment;

[0050] Fig. 9 is a schematic and perspective partial view of an assembly according to the invention according to a further embodiment;

[0051] Fig. 10 is a schematic perspective view of an inventive

[0052] Assembly according to another embodiment; and

[0053] Fig. 11 is a schematic partial sectional view of the inventive

[0054] Assembly according to Fig. 10.

[0055] In the figures, identical or functionally identical elements are provided with the same reference symbols.

[0056] Fig. 1 shows a schematic and perspective partial sectional view of an assembly 1 for a floor pan 2 of a motor vehicle body 3. Fig. 2 shows the assembly 1, in particular the floor pan 2 or the motor vehicle body 3, in a schematic plan view. The assembly 1 has at least one first body component 5 formed as a cast component 4, in particular as an aluminum die-cast component. Furthermore, the assembly 1 has at least one second body component 6 formed as a cast component 4 and separate from the first body component 5.

[0057] In the exemplary embodiment, the assembly 1 is designed as the rear section 7 of the floor assembly 2, in particular of the motor vehicle body 3. In other words, the rear section 7 is formed at least partially, in particular predominantly or entirely, by the body components 5, 6. The body components 5, 6 can thus be arranged or are arranged in the rear of a motor vehicle having the motor vehicle body 3. Alternatively, it is possible for the assembly 1 to be designed as the front section of the floor assembly 2, in particular of the motor vehicle body 3.

[0058] As shown in Fig. 2, the assembly 1 has, for example, at least one third body component 8, which is particularly designed separately from the body components 5, 6 and is preferably part of the floor assembly 2, in particular of the motor vehicle body 3. The third body component 8 is, for example, a component, in particular a one-piece component, which can in particular be referred to as a single component, or the third body component 8 is, for example, a component assembly which has several components, in particular components designed separately from one another. The third body component 8 is, for example, designed as a cast component 4, in particular as an aluminum die-cast component. For example, a rear end 10 of the floor assembly 2 with respect to a vehicle longitudinal direction 9 is formed at least partially, in particular predominantly or completely, by the third body component 8.Alternatively or additionally, the third body component 8 comprises, for example, at least one floor element 8a, particularly referred to as a floor, which is designed, for example, as a floor panel. Alternatively or additionally, two wheel housings, particularly spaced apart from one another in the vehicle transverse direction 11, are at least partially, in particular predominantly or entirely, formed or delimited by the third body component 8. The respective wheel housing 12 is preferably designed or provided to accommodate a respective vehicle wheel.

[0059] The body components 5, 6 are connected, for example, in particular directly, to the third body component 8. For example, the first body component 5 extends between two side sills 13 of the floor assembly 2, in particular of the motor vehicle body 3, which are spaced apart from one another, in particular in the vehicle transverse direction 11. For example, the second body component 6 extends, in particular in the vehicle transverse direction 11, between the wheel houses 12, which are designed, for example, as wheel house liners.

[0060] Fig. 3 and Fig. 4 each show the assembly 1 in a respective schematic partial sectional view. In order to be able to produce various construction variants of the motor vehicle body 3, in particular of the floor assembly 2, with particularly little effort, and to be able to particularly increase the mechanical load-bearing capacity of the assembly 1, in particular of the floor assembly 2 or the motor vehicle body 3, it is provided that the first body component 5 has at least one receiving region 14 and the second body component 6 has at least one receiving element 15 designed corresponding to the receiving region 14, which is received or arranged in the receiving element 15 for the positive connection of the body components 5, 6.This means that at least one positive connection 17 is provided, formed by the receiving element 15 and the receiving region 14, in particular a wall 16 of the first body component 5 which at least partially, for example predominantly or completely, delimits the receiving region 14, via which the body components 5, 6 are connected to one another, in particular directly.

[0061] Instead of a one-piece, integrated assembly 1, the body components 5, 6 can thus be formed separately from one another, allowing the body components 5, 6 to be designed specifically for each construction variant, allowing the various construction variants of the floor assembly 2, in particular of the motor vehicle body 3, to be manufactured with particularly low effort. The body components 5, 6 can be connected to one another particularly securely, in particular with particularly high mechanical strength, via the positive connection 17.

[0062] Fig. 2 additionally shows a first schematic partial view A and a second schematic partial view B of the assembly 1. In the exemplary embodiment, it is provided that the first body component 5 has at least one second receiving region 18 spaced from the receiving region 14, and the second body component 6 has at least one second receiving element 19 spaced from the receiving element 15 and designed to correspond to the second receiving region 18. The receiving region 14 can in particular be referred to as the first receiving region 14, and the receiving element 15 can in particular be referred to as the first receiving element 15. The second receiving element 19 is received or arranged in the second receiving element 19 for the form-fitting connection of the body components 5, 6.This means that the body components 5, 6 are connected to one another, in particular directly, via at least one second positive-locking connection 21, formed in particular by the second receiving element 19 and the second receiving region 18, for example by at least one wall 20 that at least partially, predominantly, or completely delimits the second receiving region 18. The positive-locking connections 17, 21 are, for example, structurally identical. The positive-locking connection 17 can in particular be referred to as the first positive-locking connection.

[0063] Preferably, the receiving element 15 received in the first receiving area 14 and the second receiving element 19 received in the second receiving area 18 are arranged on mutually different sides 22, 23 in the vehicle transverse direction 11. This means that the first positive-locking connection 17 is arranged on a first side 22, and the second positive-locking connection 21 is arranged on a second side 23 that is different from the first side 22 with respect to the vehicle transverse direction 11, in particular opposite the first side 22 in the vehicle transverse direction 11. The first side 22 is, for example, a left side of the floor assembly 2, in particular of the motor vehicle body 3, and the second side 23 is, for example, a right side of the floor assembly 2, in particular of the motor vehicle body 3.

[0064] Fig. 2 illustrates a load introduction 24 in a side collision, particularly referred to as a crash. An accident-related force is introduced into the side sill 13 and transferred to the assembly 1, in particular the first body component 5, or forwarded to the assembly 1, in particular the first body component 5. In the example sketched in Fig. 2, the first positive connection 17 is located on a side facing the impact and the second positive connection 21 is located on a side facing away from the impact. A force flow acting on the assembly 1 as a result of the side collision is illustrated in Fig. 2 by means of arrows 25. At the respective positive connection 17, 21, the accident-related force acting as a result of the side collision is at least partially transferred from the first body component 5 to the second body component 6.In other words, at the respective positive connection 17, 21, the second body component 6 is subjected to a load, in particular a mechanical load, by the first body component 5 as a result of the side collision. As illustrated in the first detailed view A, at the first positive connection 17, which is referred to in particular as the first interface, a mechanical load acts, in particular between the body components 5, 6, inwards in the vehicle transverse direction 11 and rearwards in the vehicle longitudinal direction 9. A compressive load therefore acts at the first interface, in particular on the second body component 6. As illustrated in the second detailed view B, at the second positive connection 21, which is referred to in particular as the second interface, a mechanical load acts, in particular between the body components 5, 6, outwards in the vehicle transverse direction 11 and forwards and rearwards in the vehicle longitudinal direction 9.This is illustrated in that detailed view A, B by means of arrows 27. A load transfer between the body components 5, 6, in particular from the first body component 5 to the second body component 6, can have a pushing and pulling effect in the vehicle's transverse direction 11, particularly in the event of a side collision. Due to the respective positive connection 17, 21, this load transfer can take place particularly securely, in particular without the body components 5, 6, in particular the respective positive connection 17, 21, becoming loose. This can be achieved particularly advantageously if the respective positive connection 17, 21 is each designed as a respective tenon-groove connection. In other words, the respective receiving area 14, 18 is designed, for example, as a groove, and the respective receiving element 15, 19 is designed, for example, as a tenon or tenon-like.

[0065] In Fig. 5, the detailed section view B is shown as an example in a schematic partial section view.

[0066] The body components 5, 6 are preferably designed as particularly large body components 5, 6. This means that the assembly 1 is constructed with particularly large cast components 4. The body components 5, 6, for example, have integrated various vehicle functions, such as a longitudinal structure, a transverse structure, and / or load-bearing devices or the like.

[0067] For example, at least one of the body components 5, 6 extends in the vehicle transverse direction 11 over at least 70 percent, in particular 80, 90 or 95 or 100 percent, of a total width 28 of the floor assembly 2, in particular of the motor vehicle body 3, extending in the vehicle transverse direction 11. For example, both body components 5, 6 extend in the vehicle transverse direction 11 over at least 70 percent, in particular 80, 90, 95 or 100 percent, of the total width 28 of the floor assembly 2, in particular of the motor vehicle body 3, extending in the vehicle transverse direction 11. Alternatively or additionally, the body components 5, 6 extend, for example, together over at least 50 percent, in particular at least 60, 70, 80 or 90 percent, of a total length 29 of the front end or the rear end 7 of the floor assembly 2, in particular of the Motor vehicle body 3.

[0068] In a further embodiment, it is provided that at least one of the body components 5, 6 is designed as a frame 30. In the respective exemplary embodiment shown in Figs. 1 to 5, the first and second body components 5, 6 are each designed, in particular, as a frame 30 or frame-shaped. In particular, a rear frame of the floor assembly 2 is formed at least partially, in particular predominantly or entirely, by the first or second body component 5, 6.

[0069] In the respective exemplary embodiment shown in Fig. 1 to Fig. 5, the first body component 5 has two longitudinal elements 31 and two transverse elements 32. The transverse elements 32 of the first body component 5 are preferably formed together in one piece. Furthermore, the second body component 6 has two longitudinal elements 33 and two transverse elements 34. The longitudinal elements 33 and the transverse elements 34 of the second body component 6 are preferably formed together in one piece. The rear one of the transverse elements 32 of the first body component 5, relative to the vehicle longitudinal direction 9, is designed, for example, as a heel plate, in particular as the rear region of the heel plate relative to the vehicle longitudinal direction 9. The respective longitudinal element 31, 33 can in particular be referred to as a longitudinal member and the respective transverse element 32, 34 can in particular be referred to as a cross member.

[0070] Fig. 6 shows the assembly 1 in a schematic perspective view according to a further embodiment, in which the first body component 5 is designed as a frame 30 and the second body component 6 has only one transverse element 34. This means that in the embodiment shown in Fig. 6, the positive connections 17, 21 are not connected to one another in the vehicle transverse direction 11 directly via the second body component 6, but rather, in particular with respect to the body components 5, 6 exclusively, via the first body component 5.

[0071] In contrast, in the respective embodiments shown in Fig. 1 to Fig. 5, the positive connections 17, 21 are connected to one another via the first and second body components 5, 6, in particular directly. Fig. 7 shows the assembly 1 according to the embodiment shown in Fig. 6 in a schematic detailed view to illustrate the first positive connection 17.

[0072] For example, the first and / or the second body component 5, 6 has at least one, in particular respective, connection point via which the first or the second body component 5, 6 can be connected or is connected to an axle carrier, in particular a rear axle carrier. For example, the first body component 5, in particular a front one of the transverse elements 32 with respect to the vehicle longitudinal direction 9, has at least one seat receptacle 35 for attaching at least one seat system. The seat system can be understood in particular as a vehicle seat. For example, at least one of the body components 5, 6, for example the second body component 6, has at least one connection point for attaching at least one spring and / or damper element of a wheel suspension of the motor vehicle.

[0073] Preferably, the respective receiving element 15, 19 received in the respective receiving area 14, 18 is supported or can be supported on the respective wall 16, 20 at least partially delimiting the respective receiving area 14, 18, at least in the vehicle transverse direction 11 and in the vehicle vertical direction 36. In particular, the respective receiving element 15, 19 received in the respective receiving area 14, 18 is supported or can be supported at least inwards and outwards in the vehicle transverse direction 11 and downwards and upwards in the vehicle vertical direction 36.

[0074] For example, it is provided that the respective receiving area 14, 18, for example designed as a respective recess and / or as a respective receiving opening, and the respective receiving element 15, 19 each have a respective U-shaped cross section 37. In other words, the respective receiving area 14, 18 and the respective receiving element 15, 19 each have a respective U-profile. In the respective exemplary embodiment shown in Fig. 1 to Fig. 7, the respective U-shaped cross section 37 or the respective U-profile is designed to be open towards the top in the vehicle's vertical direction 36, and in particular to be closed towards the bottom in the vehicle's vertical direction 36.

[0075] Fig. 8 shows the first and the second body component 5, 6 in a schematic and perspective partial view according to a further embodiment, in which the respective U-shaped cross section 37 or the respective U-profile is designed to be open downwards in the vehicle vertical direction 36, and in particular is designed to be closed upwards in the vehicle vertical direction 36.

[0076] Fig. 9 shows the assembly 1 in a schematic and perspective partial view according to a further embodiment, in which the respective U-shaped cross section 37 or the respective U-shaped profile is designed to be open downwards in the vehicle vertical direction 36 and in particular is designed to be closed upwards in the vehicle vertical direction 36.

[0077] Furthermore, in Fig. 8, the body components 5, 6 are not yet connected to one another. Thus, Fig. 8 illustrates a joining process, particularly referred to as joining, for joining the respective receiving element 15, 19, designed, for example, as a pin, into the respective receiving area 14, 18, designed, for example, as a groove. This is illustrated in Fig. 8 by an arrow 38, which, for example, illustrates a joining direction.

[0078] In a further embodiment, the body components 5, 6 are screwed and / or glued together. Preferably, the respective receiving element 15, 19 is screwed and / or glued to the respective wall 16, 20 of the first body component 5, which at least partially defines the respective receiving area 14, 18. Thus, for example, at least one positive tenon connection is provided between the body components 5, 6, which can optionally be provided with additional screw fastening.

[0079] As illustrated by way of example in Fig. 4, the respective receiving element 15, 19 has, for example, at least one respective receiving part 39, designed for example as a bushing or as a hole, in which at least one screw element 40, designed for example as a screw, can be received or is received, in particular for screwing the respective receiving element 15, 19 to the respective wall 16, 20. For example, several such receiving parts 39 are provided. For example, the respective receiving part 39, in particular the vehicle vertical direction 36, protrudes, for example upwards, from a base surface 41 of the respective receiving element 15, 19. For example, the body components 5, 6 are screwed together via at least one further screw element 42 spaced apart from the respective receiving element 15, 19 and / or the respective receiving area 14, 18. This is illustrated by way of example in Fig. 4.

[0080] As illustrated by way of example in Fig. 4, the respective receiving element 15, 19 and the respective wall 16, 20 are glued to one another, i.e. connected to one another by means of adhesive, for example via at least one respective surface 43 facing in the vehicle transverse direction 11, in particular inwards or outwards.

[0081] For example, the respective receiving element 15, 19 and the respective wall 16, 20 are connected to one another via at least one bolt connection 44, in particular a plurality of bolt connections 44. This is illustrated by way of example in Fig. 4. For this purpose, the respective receiving element 15, 19 has, for example, at least one respective second receiving part 45, in which at least one respective bolt, in particular for effecting the respective bolt connection 44, can be received or is received. For example, a plurality of such receiving parts 45 are provided. The respective receiving part 45 is designed, for example, as a respective bushing. For example, the respective second receiving part 45 protrudes in the vehicle transverse direction 11, in particular inwards, from a respective side wall of the respective receiving element 15, 19. Instead of the bolt connection 44 or in addition to the bolt connection, a screw connection can also be provided.

[0082] For example, the respective receiving element 15, 19 is supported, in particular directly, in the vehicle's longitudinal direction 9, in particular toward the front, on the respective wall 16, 20 of the first body component 5. Alternatively or additionally, the respective receiving element 15, 19 is supported, in particular toward the front, on the respective wall 16, 20 of the first body component 5 in the vehicle's longitudinal direction 9. Thus, the load transfer between the body components 5, 6 in the vehicle's longitudinal direction 9, in particular toward the front and / or toward the rear, i.e., for example, in both longitudinal directions, can take place via the respective screw element 40, i.e., via a respective screw connection or screw joint, and / or the respective bolt connection 44, which is particularly referred to as a bolt lock. This is illustrated by way of example in Fig. 4.For example, it is provided that at least one of the body components 5, 6, in particular the first and / or second body component 5, 6, is designed as a longitudinal member 46. Fig. 10 shows the assembly 1 in a schematic perspective view according to a further embodiment, in which the first body component 5 is designed as a frame 30 and the second body component 6, which is connected to the first body component 5 in particular via the first positive connection 17, is designed as a longitudinal member 46.

[0083] Fig. 11 shows the assembly 1 in a schematic and perspective partial sectional view according to the embodiment shown in Fig. 10 to illustrate the first positive connection 17. The first receiving element 15 and the wall 16 are preferably connected to one another by means of at least one screw element 47 and / or by means of the bolt connection 44.

[0084] As shown in Fig. 10, the assembly 1 comprises, for example, at least one third body component 48 formed separately from the first and second body components 5, 6, and in particular from the third body component 8, which is preferably formed as a cast component 4, in particular as an aluminum die-cast component. The fourth body component 48 is connected to one another, for example, by means of the second positive connection 21, in particular directly. The fourth body component 48 is preferably formed as a longitudinal member 46.

[0085] For example, it is provided that at least one of the body components 5, 6, 48 has at least one rib structure 49 with a plurality of ribs 50.

[0086] Numerals such as "first," "second," "third," etc., are intended solely for differentiation and do not indicate a sequence. This means that the corresponding numerals can be interchanged at will.

[0087] assembly

[0088] Floor group

[0089] Motor vehicle body

[0090] Cast component first body component second body component

[0091] Rear third body component a floor element

[0092] Vehicle longitudinal direction 0 rear end 1 Vehicle transverse direction 2 Wheel house 3 Side sills 4 first support area 5 first support element 6 first wall 7 first positive connection 8 second support area 9 second support element 0 second wall 1 second positive connection 2 first side 3 second side 4 load introduction 5 arrow 7 arrow 8 overall width 9 overall length 0 frame 1 longitudinal element 2 transverse element 3 longitudinal element 4 transverse element seat support

[0093] Vehicle vertical direction U-shaped cross-section arrow first receiving part

[0094] screw element

[0095] Floor area

[0096] Screw element surface

[0097] Bolt connection second receiving part longitudinal member screw element fourth body component rib structure

[0098] ribs

Claims

Patent claims 1. Assembly (1) for a floor assembly (2) of a motor vehicle body (3), with at least one first body component (5) designed as a cast component (4) and with at least one second body component (6) designed as a cast component (4) and formed separately from the first body component (5), wherein the first body component (5) has at least one receiving area (14) and the second body component (6) has at least one receiving element (15) designed to correspond to the receiving area (14) and which is received in the receiving area (14) for the form-fitting connection of the body components (5, 6).

2. Assembly (1) according to claim 1, characterized in that the assembly (1) is designed as a front structure or as a rear structure (7) of the floor assembly (2).

3. Assembly (1) according to claim 1 or 2, characterized in that • at least one of the body components (5, 6) extends in the vehicle transverse direction (11) over at least 70 percent of a total width (28) of the floor assembly (2) extending in the vehicle transverse direction (11) and / or • the body components (5, 6) together extend over at least 50 percent of a total length (29) of a front section or a rear section (7) of the floor assembly (2) extending in the vehicle longitudinal direction (9).

4. Assembly (1) according to one of the preceding claims, characterized in that at least one of the body components (5, 6) is designed as a frame (30).

5. Assembly (1) according to one of the preceding claims, characterized in that the first body component (5) has at least one wall (16) which at least partially delimits the receiving area (14), on which wall the receiving element (15) received in the receiving area (14) is supported at least in the vehicle transverse direction (11) and in the vehicle vertical direction (36).

6. Assembly (1) according to one of the preceding claims, characterized in that the receiving area (14) and the receiving element (15) each have a respective U-shaped cross section (37).

7. Assembly (1) according to one of the preceding claims, characterized in that the body components (5, 6) are screwed and / or glued together.

8. Assembly (1) according to claim 7, characterized in that the receiving element (15) is screwed and / or glued to a wall (16) of the first body component (5) which at least partially delimits the receiving area (14).

9. Assembly (1) according to one of the preceding claims, characterized in that at least one of the body components (5, 6) has at least one rib structure (49) with a plurality of ribs (50).

10. Assembly (1) according to one of the preceding claims, characterized in that the first body component (5) has at least one second receiving region (18) spaced from the receiving region (14) and the second body component (6) has at least one second receiving element (19) spaced from the receiving element (15) and designed to correspond to the second receiving region (18), which second receiving element is received in the second receiving element (18) for the form-fitting connection of the body components (5, 6), wherein the receiving element (15) received in the receiving region (14) and the second receiving region (18) received second receiving element (19) are arranged in the vehicle transverse direction (11) on mutually different sides (22, 23) of the floor assembly (2).

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