Front floor beam assembly and vehicle with same

Abstract

The utility model discloses a front floor cross beam assembly and a vehicle with the front floor cross beam assembly, the front floor cross beam assembly is used for the vehicle and comprises a front floor cross beam extending along the left-right direction of the vehicle; the front floor panel is connected to the lower side of the front floor cross beam, and a cavity is defined between the front floor panel and the front floor cross beam; and the cross beam reinforcing piece is arranged in the cavity and extends in the left-right direction, a plurality of reinforcing holes are formed in the cross beam reinforcing piece, and the reinforcing holes extend in the up-down direction of the vehicle. According to the front floor cross beam assembly, the reinforcing holes are formed in the cross beam reinforcing piece and extend in the vertical direction of the vehicle, so that the weight of the front floor cross beam assembly can be reduced, and the bending resistance of the front floor cross beam assembly in the vertical direction is improved; on the premise that the weight of the front floor beam assembly is not greatly increased, the side collision requirement can be met, and the safety performance of the front floor beam assembly is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially is related to a front floor cross beam assembly and vehicle with it. BACKGROUND

[0002] With the vehicle electrification transformation, collision safety regulation upgrading and carbon emission increasingly strict, the safety performance of vehicle is paid more and more attention by the user. Among them, the front floor cross beam as the important transmission path of side collision safety, the importance of its bending resistance performance is self-evident. In the related technology, the front floor cross beam generally adopts high-strength steel and aluminum alloy profile, in order to guarantee enough bending resistance performance, the front floor cross beam is designed more and more thick, which is not conducive to the lightweight of automobile. SUMMARY

[0003] The utility model discloses at least solve one of the technical problems in the prior art. For this purpose, the utility model provides a front floor cross beam assembly, the front floor cross beam assembly can reduce weight, improve the bending resistance performance in the up-down direction, meet the side crash requirement, improve the safety performance of front floor cross beam assembly.

[0004] The utility model also provides a vehicle, the vehicle includes the front floor cross beam assembly described above.

[0005] The front floor cross beam assembly according to the utility model embodiment is used for vehicle and includes: a front floor cross beam extending along the left-right direction of the vehicle; a front floor panel connected to the lower side of the front floor cross beam, defining a cavity between the front floor panel and the front floor cross beam; and a cross beam reinforcement provided in the cavity and extending along the left-right direction, the cross beam reinforcement having a plurality of reinforcing holes extending along the up-down direction of the vehicle.

[0006] The front floor cross beam assembly according to the utility model embodiment has the cross beam reinforcement in the cavity defined by the front floor panel and the front floor cross beam, the cross beam reinforcement, the front floor cross beam and the front floor panel form a sandwich structure together, the cross beam reinforcement has a plurality of reinforcing holes extending along the up-down direction of the vehicle, which can reduce the weight of the front floor cross beam assembly, improve the bending resistance performance of the front floor cross beam assembly in the up-down direction, meet the side crash requirement and improve the safety performance of the front floor cross beam assembly without significantly increasing the weight of the front floor cross beam assembly.

[0007] In addition, the front floor cross beam assembly according to the utility model can also have the following additional technical features:

[0008] In some embodiments, the rear end of the front floor cross beam has a lower recess, and the lower recess is two recesses spaced apart along the left-right direction.

[0009] In some embodiments, the rear end of the cross beam reinforcement has two avoidance notches corresponding to the lower recesses.

[0010] In some embodiments, the front floor panel has two first connecting holes spaced apart in the left-right direction, and each of the two lower recesses is provided with a second connecting hole, and the two first connecting holes are arranged opposite to the two second connecting holes.

[0011] In some embodiments, the front floor cross beam assembly further comprises: a battery pack mounting assembly, the battery pack mounting assembly is arranged in the cavity and is two, and the two battery pack mounting assemblies are arranged at the two avoidance notches and arranged opposite to the two second connecting holes.

[0012] In some embodiments, the outer surface of the cross beam reinforcement is coated with an expansion structural adhesive, which is used to connect the cross beam reinforcement, the front floor cross beam and the front floor panel.

[0013] In some embodiments, the front floor cross beam assembly further comprises: a rocker inner panel, the rocker inner panel is two and is located at the left and right ends of the front floor cross beam in the left-right direction; and a mounting bracket, the mounting bracket is two, and the two mounting brackets are used to connect the two rocker inner panels to the left and right ends of the front floor cross beam in the left-right direction.

[0014] In some embodiments, the cross beam reinforcement is provided with a reinforcing rib extending in the left-right direction.

[0015] In some embodiments, the cross beam reinforcement is provided with a metal connecting piece at both ends in the left-right direction, and the metal connecting piece is welded to the front floor cross beam.

[0016] The utility model further provides a vehicle with the above-mentioned embodiments.

[0017] According to the vehicle of the utility model embodiment, through the front floor cross beam assembly, the cavity defined by the front floor panel and the front floor cross beam is provided with the cross beam reinforcement, the cross beam reinforcement, the front floor cross beam and the front floor panel form a sandwich structure, the cross beam reinforcement has a plurality of reinforcing holes extending in the up-down direction of the vehicle, which can reduce the weight of the front floor cross beam assembly, improve the bending resistance of the front floor cross beam assembly in the up-down direction, meet the side impact requirements without significantly increasing the weight of the front floor cross beam assembly, and improve the safety performance of the front floor cross beam assembly.

[0018] Additional aspects and advantages of the utility model will be partially given in the following description, some will become apparent from the following description, or will be understood through the practice of the utility model. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is an exploded view of the front floor beam assembly according to an embodiment of the present utility model;

[0021] Figure 2 This is a perspective view of a portion of the crossbeam reinforcement of the front floor crossbeam assembly according to an embodiment of the present utility model;

[0022] Figure 3 This is a perspective view of the front floor crossbeam assembly according to an embodiment of the present utility model;

[0023] Figure 4 This is a top view of the front floor crossbeam assembly according to an embodiment of the present utility model;

[0024] Figure 5 It is along Figure 4 Sectional view of line AA in the middle;

[0025] Figure 6 It is along Figure 4 Sectional view of the middle BB line;

[0026] Figure 7 This is a perspective view of the crossbeam reinforcement of the front floor crossbeam assembly according to an embodiment of the present utility model;

[0027] Figure 8 This is a top view of the crossbeam reinforcement of the front floor crossbeam assembly according to an embodiment of the present utility model;

[0028] Figure 9 This is a bottom view of the crossbeam reinforcement of the front floor crossbeam assembly according to an embodiment of the present utility model.

[0029] Figure label:

[0030] 100. Front floor crossbeam assembly;

[0031] 1. Front floor crossbeam; 11. Cavity; 12. Recess; 121. Second connecting hole; 13. Third connecting hole; 14. Projection weld nut;

[0032] 2. Front floor panel; 21. First connecting hole;

[0033] 3. Crossbeam reinforcement; 31. Reinforcing hole; 32. Clearance notch; 33. Expanding structural adhesive; 331. First structural adhesive; 332. Second structural adhesive; 34. Reinforcing rib; 35. Metal connecting piece; 351. First section; 352. Second section;

[0034] 4. A battery pack mounting assembly; 41. A battery pack mounting nut; 42. A battery pack mounting nut plate; 43. A nut plate reinforcement plate;

[0035] 5. A rocker inner panel;

[0036] 6. A mounting bracket. DETAILED DESCRIPTION

[0037] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein like reference numerals identify like elements in the figures, and wherein the embodiments described are but examples of implementations of the present application. As such, specific details thereof are not to be interpreted as limiting, but are presented for purposes of illustration only.

[0038] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and therefore cannot be interpreted as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be interpreted as limiting the present application.

[0039] In addition, the terms "first", "second", etc. are used only for descriptive purposes and cannot be interpreted as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0040] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connected", "connected", "fixed" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] The front floor cross beam assembly 100 according to the embodiments of the present application is described below with reference to the drawings.

[0042] AsFigure 1 and Figure 6 As shown, the front floor crossbeam assembly 100 according to an embodiment of the present invention is used in a vehicle and includes a front floor crossbeam 1, a front floor panel 2, and a crossbeam reinforcement 3.

[0043] Specifically, see the attached document. Figure 1 As shown, the front floor crossbeam 1 is typically located below the front axle of the vehicle, and the front floor crossbeam 1 runs along the left-right direction of the vehicle (e.g., Figure 1 As shown, the front floor panel 2 extends to connect the load-bearing structures on both sides of the vehicle body, and is capable of bearing the weight of the vehicle body and the load from components such as the engine. Furthermore, the front floor panel 2 is connected to the lower side of the front floor crossbeam 1 and extends in the left-right direction. The front floor panel 2 is welded to the front floor crossbeam 1. As an important component of the vehicle's bottom structure, the front floor panel 2 bears the responsibility of bearing the weight and load of the vehicle body, and can evenly distribute the weight of the vehicle body and the load during driving to other parts of the vehicle body, ensuring the stability and safety of the vehicle. A cavity 11 is defined between the front floor panel 2 and the front floor crossbeam 1.

[0044] Furthermore, see the attached document. Figure 1 and attached Figure 7 As shown, the crossbeam reinforcement 3 is disposed within the cavity 11 and extends in the left-right direction. The crossbeam reinforcement 3 has multiple reinforcing holes 31, which extend along the vertical direction of the vehicle (e.g., ...). Figure 1 As shown, the reinforcement hole 31 can reduce the weight of the front floor crossbeam assembly 100 by approximately 15%, thus contributing to the vehicle's lightweight design. It is understood that the crossbeam reinforcement 3, together with the front floor crossbeam 1 and the front floor panel 2, forms a sandwich structure. Utilizing the out-of-plane (axial) compressive strength of the reinforcement hole 31, it enhances the bending resistance of the front floor crossbeam assembly 100 in the vertical direction. This allows it to meet side-impact requirements and improve the safety performance of the front floor crossbeam assembly 100 without significantly increasing its weight. Optionally, the dimensions, shape, and wall thickness of the reinforcement hole 31 can be designed and adjusted according to actual load and spatial constraints.

[0045] Specifically, the crossbeam reinforcement 3 is injection molded from a fiber-reinforced high-performance composite material. For example, the material of the crossbeam reinforcement 3 can be PA66-35GF, PBT / PET-35GF, PPE / PA-35GF, etc., and the type and content of fibers can be adjusted according to user needs.

[0046] According to the front floor cross beam assembly 100, the cavity 11 defined by the front floor panel 2 and the front floor cross beam 1 is provided with the cross beam reinforcing part 3, the cross beam reinforcing part 3 and the front floor cross beam 1 and the front floor panel 2 jointly form a sandwich structure, the cross beam reinforcing part 3 is provided with a plurality of reinforcing holes 31, the reinforcing holes 31 extend along the up-down direction of the vehicle, the weight of the front floor cross beam assembly 100 can be reduced, the bending resistance of the front floor cross beam assembly 100 in the up-down direction is improved, the safety performance of the front floor cross beam assembly 100 is improved under the premise that the weight of the front floor cross beam assembly 100 is not greatly increased.

[0047] In some embodiments of the utility model, reference is made to the drawings Figure 1 , the drawings Figure 4 and the drawings Figure 5 , the rear end of the front floor cross beam 1 is provided with a lower recess 12, the lower recess 12 is provided with two recesses in the left-right direction, so that the size of the local cavity 11 in the up-down direction is reduced, the space for the rear passengers to place their feet is increased by about 20mm, the passengers in the rear row can place their feet conveniently, the demand for the space for the man-machine arrangement is met, and the lateral crash performance of the front floor cross beam assembly 100 can be avoided.

[0048] In further embodiments of the utility model, reference is made to the drawings Figure 1 , the rear end of the cross beam reinforcing part 3 is provided with an avoiding gap 32, the avoiding gap 32 is provided with two gaps corresponding to the lower recess 12, a certain space is reserved for the local lower recess of the front floor cross beam 1, the space for the feet of the passengers in the rear row is ensured, and the demand for the space for the man-machine arrangement is further met.

[0049] In further embodiments of the utility model, reference is made to the drawings Figure 1 , the front floor panel 2 is provided with two first connecting holes 21 spaced apart in the left-right direction, the two lower recesses 12 are respectively provided with a second connecting hole 121, the two first connecting holes 21 and the two second connecting holes 121 are provided opposite to each other in a one-to-one correspondence, the battery pack can be fixed to the front floor panel 2 and the front floor cross beam 1 by the fasteners sequentially penetrating through the first connecting hole 21 and the second connecting hole 121, so that the front floor cross beam assembly 100 has the function of installing the battery pack, and the functional integration of the front floor cross beam assembly 100 is realized.

[0050] Further, reference is made to the drawings Figure 1 and the drawings Figure 3As shown, the front floor cross beam 1 also has four third connecting holes 13 spaced apart in the left-right direction, the four third connecting holes 13 are all spaced apart from the lower recess 12, and the four third connecting holes 13 are all welded with a projection nut 14, the two left projection nuts 14 are used to provide the installation of the front row left seat rail, and the two right projection nuts 14 are used to provide the installation of the front row right seat rail, so that the front floor cross beam 1 has a seat installation function, and the functional integration of the front floor cross beam assembly 100 is realized.

[0051] In a further embodiment of the present application, reference is made to the accompanying drawings Figure 1 As shown, the front floor cross beam assembly 100 further comprises: a battery pack mounting assembly 4, the battery pack mounting assembly 4 is arranged in the cavity 11 and is two, the two battery pack mounting assemblies 4 are arranged at the two avoiding notches 32 respectively and are arranged opposite to the two second connecting holes 121, each battery pack mounting assembly 4 comprises a battery pack mounting nut 41, a battery pack mounting nut plate 42 and a nut plate reinforcing plate 43, the battery pack mounting nut 41, the battery pack mounting nut plate 42 and the nut plate reinforcing plate 43 are welded and connected, the front floor panel 2, the nut plate reinforcing plate 43, the battery pack mounting nut plate 42 and the front floor cross beam 1 are arranged in sequence from top to bottom, if the battery pack is directly fixed on the lower side of the front floor panel 2, local deformation of the front floor panel 2 is easy to cause, and the structural strength of the front floor cross beam assembly 100 is affected, and the battery pack mounting assembly 4 is arranged on the upper side of the front floor panel 2, the structural strength of the front floor panel 2 can be improved, the reliability and stability of the connection between the battery pack and the front floor panel 2 are improved, and thus the function of the front floor cross beam assembly 100 for mounting the battery pack is ensured.

[0052] In some embodiments of the present application, reference is made to the accompanying drawings Figure 8 and the accompanying drawings Figure 9 As shown, the outer surface of the cross beam reinforcing part 3 is coated with an expansion structural adhesive 33, the expansion structural adhesive 33 is used to connect the cross beam reinforcing part 3 and the front floor cross beam 1 and the front floor panel 2, after electrophoresis baking, the expansion structural adhesive 33 foams, the front floor cross beam 1, the front floor panel 2 and the cross beam reinforcing part 3 are glued together to form an overall sandwich structure, so that the front floor cross beam assembly 100 as a whole participates in stress, which is beneficial to the transmission and dispersion of side collision force.

[0053] Specifically, Expandable Structural Adhesive 33 is a special adhesive made by mixing ordinary structural adhesive with an expanding agent. Its main components are polyurethane or other resin materials, with appropriate amounts of expanding agents and additives added. During the curing process or under specific conditions (such as moisture and temperature), the expanding agent undergoes a chemical reaction, producing a large amount of gas, causing the adhesive volume to expand, thereby achieving specific functional effects. Expandable Structural Adhesive 33 has excellent sealing performance, good waterproof performance, and is resistant to temperature and chemical corrosion. Expandable Structural Adhesive 33 can fill irregular unevenness on the bonding surface, forming a larger bonding area, thereby improving the bonding strength and ensuring the reliability of the bonding between the crossbeam reinforcement 3 and the front floor crossbeam 1 and the front floor panel 2.

[0054] In a specific example, see Appendix Figure 8 and attached Figure 9 As shown, the bottom center of the crossbeam reinforcement 3 is designed with a first structural adhesive 331 that runs through the left and right direction, and the top of the crossbeam reinforcement 3 has two second structural adhesives 332 that run through the left and right direction. The two second structural adhesives 332 are respectively applied to the front and rear ends of the crossbeam reinforcement 3 and extend toward the front and rear side walls of the crossbeam reinforcement 3, thereby forming three force transmission channels that run through the left and right direction. This is beneficial for the transmission and dispersion of side impact forces, so that the front floor crossbeam assembly 100 as a whole participates in the force and serves as an important load-bearing path for the side impact of the whole vehicle.

[0055] In some embodiments of this utility model, reference is made to the appendix. Figure 1 As shown, the front floor crossbeam assembly 100 also includes a sill inner panel 5 and a mounting bracket 6. There are two sill inner panels 5, which are located at the two ends of the front floor crossbeam 1 in the left and right directions, respectively. There are two mounting brackets 6, which are used to connect the two sill inner panels 5 to the two ends of the front floor crossbeam 1 in the left and right directions, respectively. The mounting brackets 6 are riveted to the sill inner panels 5 and welded to the front floor crossbeam 1. The crossbeam of the front seat is connected to the mounting bracket 6 to improve the reliability and stability of the seat installation, ensure the seat installation function of the front floor crossbeam 1, and realize the functional integration of the front floor crossbeam assembly 100.

[0056] In some embodiments of this utility model, reference is made to the appendix. Figure 7 As shown, the crossbeam reinforcement 3 is provided with a reinforcing rib 34, which extends in the left and right direction and is integrally formed on the crossbeam reinforcement 3. This can increase the force transmission path of the crossbeam reinforcement 3 in the left and right direction, disperse the collision energy received by the crossbeam reinforcement 3, improve the structural strength of the crossbeam reinforcement 3, improve the stability and reliability of the front floor crossbeam assembly 100, reduce the intrusion of the passenger compartment, and protect the safety of the occupants.

[0057] In some embodiments of this utility model, reference is made to the appendix. Figure 2As shown, the cross beam reinforcement 3 is provided with a metal connecting plate 35 at both ends in the left-right direction, and the metal connecting plate 35 is welded with the front floor cross beam 1. Specifically, each metal connecting plate 35 includes a first section 351 extending in the up-down direction and a second section 352 connected to the upper end of the first section 351 and extending towards the end away from the cross beam reinforcement 3. When the cross beam reinforcement 3 is produced and processed, the metal connecting plate 35 is pre-embedded, so that the first section 351 is fixed on the cross beam reinforcement 3, and the cross beam reinforcement 3 can be spot-welded with the front floor cross beam 1 through the second section 352. Since the cross beam reinforcement 3 is a composite material piece (non-metal piece), the metal connecting plate 35 can increase the connection mode of the cross beam reinforcement 3 and the front floor cross beam 1, and improve the connection reliability and stability of the cross beam reinforcement 3 and the front floor cross beam 1.

[0058] The utility model discloses still a kind of vehicle with the front floor cross beam assembly 100 of above-mentioned embodiment.

[0059] According to the vehicle of the utility model embodiment, by being provided with above-mentioned front floor cross beam assembly 100, by the cavity 11 defined in front floor panel 2 and front floor cross beam 1, be provided with cross beam reinforcement 3, cross beam reinforcement 3 and front floor cross beam 1, front floor panel 2 jointly form sandwich structure, cross beam reinforcement 3 has multiple reinforcing holes 31, reinforcing hole 31 extends along the up-down direction of vehicle, can reduce the weight of front floor cross beam assembly 100, improve the bending resistance of front floor cross beam assembly 100 in up-down direction, can satisfy side impact requirement under the premise that the weight of front floor cross beam assembly 100 is not greatly increased, improve the safety performance of front floor cross beam assembly 100.

[0060] The front floor cross beam assembly 100 and other components of the vehicle according to the utility model embodiment are known to those skilled in the art, and will not be described in detail here.

[0061] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0062] Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A front floor cross member assembly characterized by, A front floor cross member assembly for a vehicle comprises: a front floor cross member extending in a left-right direction of the vehicle; a front floor panel connected to a lower side of the front floor cross member, the front floor panel and the front floor cross member defining a cavity therebetween; a cross member reinforcement provided in the cavity and extending in the left-right direction, the cross member reinforcement having a plurality of reinforcement holes extending in an up-down direction of the vehicle.

2. The front floor cross-car beam assembly of claim 1, wherein, The rear end of the front floor cross member has two concave portions spaced apart in the left-right direction.

3. The front floor cross-car beam assembly of claim 2, wherein, The rear end of the cross member reinforcement has two relief notches corresponding to the concave portions.

4. The front floor cross-car beam assembly of claim 3, wherein, The front floor panel has two first connection holes spaced apart in the left-right direction, and each of the concave portions has a second connection hole corresponding to the first connection holes.

5. The front floor cross-car beam assembly of claim 4, wherein, The front floor cross member assembly further comprises: two battery pack mounting assemblies provided in the cavity and corresponding to the second connection holes.

6. The front floor cross-car beam assembly of claim 1, wherein, An outer surface of the cross member reinforcement is coated with an expansion structural adhesive for connecting the cross member reinforcement with the front floor cross member and the front floor panel.

7. The front floor cross-car beam assembly of claim 1, wherein, The front floor cross member assembly further comprises: two rocker inner panels respectively located at the left and right ends of the front floor cross member; two mounting brackets respectively connecting the rocker inner panels to the left and right ends of the front floor cross member.

8. The front floor cross-car beam assembly of claim 1, wherein, The cross member reinforcement has a reinforcing rib extending in the left-right direction.

9. The front floor cross-car beam assembly of claim 1, wherein, The left and right ends of the cross member reinforcement each has a metal connecting plate welded to the front floor cross member.

10. A vehicle characterized by comprising: The front floor cross member assembly comprises any one of the front floor cross member assemblies according to claims 1-9.

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