Vehicle floor structure and vehicle

Abstract

The embodiment of the utility model provides a vehicle floor structure and a vehicle. The vehicle floor structure comprises a floor panel, a first cross beam, a second cross beam and a convex rib which are integrally extruded and formed; the floor panel is divided into a first side area and a second side area with the center line as the boundary in the first direction, and the first cross beam and the second cross beam extend in the second direction and are arranged in the first side area and the second side area of the floor panel respectively. The convex ribs extend in the second direction, are arranged on the floor panel and are located between the first cross beam and the second cross beam in the first direction. In the embodiment of the utility model, the floor panel, the first cross beam, the second cross beam and the convex ribs are integrated into an integral piece and are integrally extruded and formed, so that the production procedures are reduced, the production process is simplified, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of vehicles, and particularly relate to a vehicle floor structure and a vehicle. BACKGROUND

[0002] The floor structure of an automobile is the largest part under the passenger compartment and is an important vehicle body part. The floor structure generally includes a floor, a seat mounting cross beam and the like.

[0003] In the related art, the floor and the seat mounting cross beam are generally stamping parts, and the two are connected together by welding or riveting.

[0004] The floor structure described above needs to stamp the floor and the seat mounting cross beam respectively before connecting the two during production, and thus has more production procedures and higher production cost. CONTENT OF THE UTILITY MODEL

[0005] Embodiments of the present application provide a vehicle floor structure and a vehicle, aiming to improve the problem of more production procedures and higher production cost of the floor structure of an automobile.

[0006] In a first aspect, embodiments of the present application provide a vehicle floor structure, comprising an integrally extruded floor panel, a first cross beam, a second cross beam and a protruding rib.

[0007] The floor panel is divided into a first side region and a second side region along a first direction with a center line as a boundary, the first cross beam and the second cross beam extend along a second direction and are arranged in the first side region and the second side region of the floor panel respectively.

[0008] The protruding rib extends along the second direction, is arranged on the floor panel and is located between the first cross beam and the second cross beam along the first direction.

[0009] According to the above technical means, the floor panel, the first cross beam, the second cross beam and the protruding rib are integrated into one whole part and are integrally extruded, compared with the separate manufacturing of the floor and the seat mounting cross beam of the existing floor structure, the procedure of connecting the floor and the seat mounting cross beam is cancelled, the production procedures are reduced, the production process is simplified and the production cost is reduced. The performance of the vehicle floor structure integrally formed is better than that of the floor structure assembled by the floor and the seat mounting cross beam. In addition, the vehicle floor structure is integrally formed, the lap joint edge is cancelled, so that the weight of the vehicle floor structure can be reduced and the lightweight design can be realized.

[0010] In the present application, the first cross beam and the second cross beam are arranged at the first side region and the second side region of the floor panel, that is, the cross beams are arranged at both sides of the floor panel. In the extrusion process of the metal material, the resistance received by the metal material during the flow along the two sides of the section is basically consistent, which can improve the flow uniformity and stress balance of the metal material along the two sides of the section. In the present application, the protruding rib is arranged between the first cross beam and the second cross beam, which can make the metal material flow uniformly in the extrusion die during the extrusion process of the metal material, so that the middle part of the floor panel will not produce excessive waves, deformation and the like, and the middle part of the floor panel is more regular in forming, so as to ensure the forming of the part.

[0011] Optionally, the height of the first cross beam is equal to the height of the second cross beam, and the width of the first cross beam is equal to the width of the second cross beam.

[0012] The number of the protruding ribs is one, and the distance between the protruding rib and the first cross beam along the first direction is equal to the distance between the protruding rib and the second cross beam.

[0013] According to the above technical means, in the extrusion process of the metal material, the flow rate of the metal material along the two sides of the section is basically consistent, and the stress on the two sides is basically balanced.

[0014] Optionally, the protruding rib is a structure symmetric to the vertical symmetry plane, and the vertical symmetry plane is perpendicular to the first direction.

[0015] According to the above technical means, in the extrusion process of the metal material, the flow uniformity and stress balance of the metal material along the two sides of the section can be further improved.

[0016] Optionally, the thickness of the floor panel is greater than or equal to 1 mm and less than or equal to 1.5 mm.

[0017] According to the above technical means, lightweight design can be realized on the basis of ensuring the structural strength of the floor panel.

[0018] Optionally, the protruding rib is a solid structure.

[0019] And / or, the shape of the cross section of the protruding rib perpendicular to the second direction is any one of a rectangle, a trapezoid and a semicircle.

[0020] According to the above technical means, the protruding rib structure and shape are simple and have no sharp corners, which is beneficial to extrusion forming.

[0021] Optionally, the width of the protruding rib is greater than or equal to 3 mm and less than or equal to 4 mm.

[0022] The height of the protruding rib is greater than or equal to 1 mm and less than or equal to 3 mm.

[0023] According to the above technical means, the convex rib plays a corresponding role while being small in size, and the use of materials can be avoided from being excessively increased, so as to reduce the material cost.

[0024] Optionally, the material of the floor panel, the first cross beam, the second cross beam and the convex rib is an aluminum alloy.

[0025] According to the above technical means, the light weight design can be realized on the basis of ensuring the overall strength of the vehicle floor structure.

[0026] Optionally, a first round corner is arranged at the connection between the convex rib and the floor panel.

[0027] And / or, a second round corner is arranged at the connection between the first cross beam and the floor panel.

[0028] And / or, a third round corner is arranged at the connection between the second cross beam and the floor panel.

[0029] According to the above technical means, the round corner structure can reduce the stress concentration at the connection; in addition, for an extrusion die used for forming the vehicle floor structure, the corresponding part is also designed with a round corner, which is beneficial to prolong the service life of the extrusion die.

[0030] Optionally, the wall thickness of the first cross beam and / or the second cross beam is greater than or equal to 2 mm and less than or equal to 4 mm.

[0031] According to the above technical means, the design requirements of the cross beam strength can be met.

[0032] In a second aspect, the embodiments of the present application provide a vehicle comprising the vehicle floor structure as described above. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 A perspective structural schematic diagram of the vehicle floor structure provided by the embodiments of the present application is shown;

[0034] Figure 2 A side structural schematic diagram of the vehicle floor structure provided by the embodiments of the present application is shown;

[0035] Figure 3 A structural schematic diagram of the convex rib in the vehicle floor structure provided by the embodiments of the present application is shown.

[0036] Explanation of reference signs:

[0037] 1 - first cross beam, 11 - first outer profile body, 12 - first reinforcing rib, 2 - second cross beam, 21 - second outer profile body, 22 - second reinforcing rib, 3 - bead, 4 - floor panel, 41 - first side region, 411 - first flash, 42 - second side region, 421 - second flash, 5 - first fillet, 6 - second fillet, 7 - third fillet. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects solved by the present application clearer, the present application will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0039] In the related art, the floor and the seat mounting cross beam are usually stamped parts, and the two are connected together by welding or riveting. The floor structure described above, when produced, needs to stamp the floor and the seat mounting cross beam respectively, and then connect the two, and the stamping part process is generally 2 to 4 sequences, the production process is more, and the production cost is higher. In order to solve the above problems, the vehicle floor structure and the vehicle provided by the embodiments of the present application are described in detail below.

[0040] REFERENCE Figure 1 The vehicle floor structure provided by the embodiments of the present application includes an integrally extruded floor panel 4, a first cross beam 1, a second cross beam 2 and a bead 3. The floor panel 4 is divided into a first side region 41 and a second side region 42 along a first direction with a center line as a boundary. The first cross beam 1 and the second cross beam 2 extend along a second direction and are arranged in the first side region 41 and the second side region 42 of the floor panel 4 respectively. The bead 3 extends along the second direction, is arranged on the floor panel 4, and is located between the first cross beam 1 and the second cross beam 2 along the first direction.

[0041] The vehicle floor structure is integrally extruded by a metal material, which can be an aluminum alloy. The integrally extruded vehicle floor structure is achieved by an extrusion die. The first cross beam 1, the second cross beam 2 and the bead 3 are arranged on the same side of the floor panel 4 along the thickness direction thereof. For the integrally extruded vehicle floor structure, the lengths of the first cross beam 1, the second cross beam 2 and the bead 3 are equal to the length of the floor panel 4.

[0042] In this embodiment, the floor panel 4, the first crossbeam 1, the second crossbeam 2, and the rib 3 are integrated into a single piece and integrally extruded. Compared to the separate manufacturing of the floor and seat mounting beams in existing floor structures, this eliminates the process of connecting the floor and seat mounting beams, reducing production steps, simplifying the production process, and lowering production costs. This embodiment achieves integrated manufacturing of the vehicle floor structure, enhancing its overall integration.

[0043] The performance of the integrally molded vehicle floor structure is superior to that of a floor structure assembled from the floor and seat mounting beams. In existing floor structures, the floor and seat mounting beams are connected by overlapping edges, resulting in a relatively heavy floor structure. In the embodiments of this application, the vehicle floor structure is integrally molded, eliminating the overlapping edges, thereby reducing the weight of the vehicle floor structure and achieving a lightweight design.

[0044] The first direction is the width direction of the floor panel 4. The first direction can be referred to... Figure 1 and Figure 2 The direction indicated by arrow A. The second direction is the length direction of floor panel 4; the second direction can be referenced. Figure 1 The direction indicated by arrow B. Along the first direction, the widths of the first side region 41 and the second side region 42 are equal. The floor panel 4 is typically a rectangular plate structure with a center line extending along the first direction and a center line extending along the second direction. The center line used to divide the floor panel 4 into the first side region 41 and the second side region 42 is also the center line of the floor panel 4 extending along the second direction.

[0045] Compared to the centerline extending along the second direction of the floor panel 4, the first crossbeam 1 is closer to the edge of the first side region 41, and the second crossbeam 2 is closer to the edge of the second side region 42. The first side region 41 also includes a first burr 411, located on the side of the first crossbeam 1 away from the second crossbeam 2. The second side region 42 also includes a second burr 421, located on the side of the second crossbeam 2 away from the first crossbeam 1. Along the first direction, the width of the first burr 411 is less than the width of the first crossbeam 1, and the width of the second burr 421 is less than the width of the second crossbeam 2. The widths of the first burr 411 and the second burr 421 may be equal or unequal.

[0046] According to the profile extrusion mechanics principle, the extrusion deformation makes the aluminum ingot have a superior three-way pressure stress state in the forming process, but under the action of temperature, extrusion speed and structure, deformation inhomogeneity may be generated, so that the flow velocity difference of the metal material along the embryo ingot section is generated, and a larger longitudinal tensile stress is generated. If there is only one side with a crossbeam, the flow velocity of the metal material along the two sides of the section is uneven, the stress of the two sides is unbalanced, and wave defects are generated. In the application, the first crossbeam 1 and the second crossbeam 2 are arranged on the first side area 41 and the second side area 42 of the floor panel 4, that is, there are crossbeams on both sides of the floor panel 4. In the extrusion process of the metal material, the resistance received by the metal material during the flowing process along the two sides of the section is basically consistent, and the flow velocity uniformity and stress balance of the metal material along the two sides of the section can be improved.

[0047] The number of the convex ribs 3 can be set according to actual needs, for example, one, two, three, etc. It should be noted that the position design of the convex ribs 3 needs to meet the requirement that the flow velocities of the metal material along the two sides of the section are basically consistent. When the number of the convex ribs 3 is one, the convex rib 3 is preferably located at the middle position between the first crossbeam 1 and the second crossbeam 2. When the number of the convex ribs 3 is multiple, the multiple convex ribs 3 are uniformly distributed along the first direction.

[0048] Along the first direction, the distance between the first crossbeam 1 and the second crossbeam 2 is large, so that the middle part of the floor panel 4 between the first crossbeam 1 and the second crossbeam 2 has a wide width and a thin thickness, and is a flat plate structure without other shapes, and deformation is easily generated during extrusion. In the application, the convex rib 3 is arranged between the first crossbeam 1 and the second crossbeam 2, and the metal material can flow uniformly in the extrusion die during the extrusion process of the metal material, so that the middle part of the floor panel 4 does not generate excessive waves, deformation, etc., and the middle part of the floor panel 4 is more regular in forming, so as to ensure the formability of the part.

[0049] In some embodiments, the height of the first crossbeam 1 and the second crossbeam 2 is equal and the width of the first crossbeam 1 and the second crossbeam 2 is equal; the number of the convex rib 3 is one, and along the first direction, the distance between the convex rib 3 and the first crossbeam 1 is equal to the distance between the convex rib 3 and the second crossbeam 2.

[0050] The width of the first crossbeam 1 is the size of the first crossbeam 1 along the first direction, and the height of the first crossbeam 1 is the size of the first crossbeam 1 along the thickness direction of the floor panel. The width of the second crossbeam 2 is the size of the second crossbeam 2 along the first direction, and the height of the second crossbeam 2 is the size of the second crossbeam 2 along the thickness direction of the floor panel. In the embodiments of the application, for the first crossbeam 1 and the second crossbeam 2 with equal height and equal width, the distance between the convex rib 3 and the first crossbeam 1 and the second crossbeam 2 is equal, so that the flow velocities of the metal material along the two sides of the section are basically consistent, and the stresses of the two sides are basically balanced during the extrusion process of the metal material.

[0051] In some embodiments, with reference to Figure 3 , the convex rib 3 is a structure symmetrical about a vertical symmetry plane, and the vertical symmetry plane is perpendicular to the first direction.

[0052] In some embodiments, the first cross beam 1 comprises a first outer profile body 11 and a first reinforcing rib 12, and the second cross beam 2 comprises a second outer profile body 21 and a second reinforcing rib 22. The number of the first reinforcing rib 12 and the second reinforcing rib 22 can be equal or not equal. The convex rib 3 is a structure symmetrical about a vertical symmetry plane. In addition, the first outer profile body 11 of the first cross beam 1 and the second outer profile body 21 of the second cross beam 2 can also be arranged symmetrically about the vertical symmetry plane. In this embodiment, the convex rib 3 is a symmetrical structure, which can further improve the uniformity of the flow rate of the metal material along the two sides of the cross section and the stress balance of the two sides during the extrusion of the metal material.

[0053] In some embodiments, the thickness of the floor panel 4 is greater than or equal to 1 mm and less than or equal to 1.5 mm. In some embodiments, the thickness of the floor panel 4 can be 1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, etc. In this embodiment, when the thickness of the floor panel 4 is within the above range, lightweight design can be achieved on the basis of ensuring the structural strength.

[0054] The floor panel 4 in the vehicle floor structure has the characteristics of wide width and single-layer thin wall. The wide width refers to the large width of the floor panel 4 along the first direction, and the single-layer thin wall refers to the single-layer structure and small thickness of the floor panel 4. In order to realize the wide width and single-layer thin wall of the floor panel 4, the vehicle floor structure is formed by using a wide thin-wall profile flat extrusion technology. The extrusion ratio of the wide thin-wall profile flat extrusion technology exceeds the range of the extrusion ratio that can be achieved by using the conventional process of the ordinary circular casting rod extruder. For vehicle body parts, the wide thin-wall profile flat extrusion technology can shorten the production process, and compared with the traditional extrusion, the wide thin-wall profile flat extrusion technology can achieve a thinner wall thickness for manufacturing profile parts of the same width, thereby meeting the lightweight demand of the vehicle body parts. The existing extrusion technology is limited by the extrusion ratio, and is often limited in the maximum extrusion width and requires high equipment such as a press. The vehicle floor structure is formed based on the wide thin-wall profile flat extrusion technology in this application, which can increase the maximum extrusion width, so that the design of the vehicle floor structure is more flexible.

[0055] The existing wide profile part, for example, a floor, usually adopts a structure of double-layer plate and hollow rib in order to ensure the stability during extrusion forming. The weight is heavy, the occupied space is large, and the installation adaptation requirement is high. In the embodiment of the present application, the convex rib 3 and the two side beams can effectively control the deformation of the part, compared with the design of the double-layer plate and the hollow rib, so that the floor panel 4 does not need to increase other additional modeling, which can reduce the weight of the floor panel 4, reduce the space occupied by the floor panel 4, and facilitate the subsequent process.

[0056] In some embodiments, the convex rib 3 is a solid structure; the shape of the cross section of the convex rib 3 perpendicular to the second direction is any one of a rectangle, a trapezoid, and a semicircle.

[0057] In this embodiment, the convex rib 3 is a solid structure, which is simple in structure and conducive to extrusion molding. In addition, the shape of the cross section of the convex rib 3 perpendicular to the second direction is simple and has no sharp corners, which is conducive to extrusion molding.

[0058] In other embodiments, the convex rib 3 can also be a hollow structure.

[0059] In some embodiments, the width of the convex rib 3 is greater than or equal to 3 mm and less than or equal to 4 mm; the height of the convex rib 3 is greater than or equal to 1 mm and less than or equal to 3 mm.

[0060] In this embodiment, the convex rib 3 plays a corresponding role while having a small size, which can avoid excessive increase in the amount of material, thereby reducing the material cost.

[0061] In some embodiments, the materials of the floor panel 4, the first cross beam 1, the second cross beam 2, and the convex rib 3 are aluminum alloys. The aluminum alloys have good extrudability, which can realize the integrated extrusion molding of the floor panel 4, the first cross beam 1, the second cross beam 2, and the convex rib 3. The aluminum alloys have low density and high specific strength, which can realize lightweight design on the basis of ensuring the overall strength of the vehicle floor structure.

[0062] In some embodiments, referring to Figure 3 , the connection between the convex rib 3 and the floor panel 4 is provided with a first round corner 5; referring to Figure 2 , the connection between the first cross beam 1 and the floor panel 4 is provided with a second round corner 6; and the connection between the second cross beam 2 and the floor panel 4 is provided with a third round corner 7.

[0063] The radius of the first round corner can be 0.5mm-1.5mm, the radius of the second round corner can be 4mm-6mm, for example, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, etc., and the radius of the third round corner can be 4mm-6mm, for example, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, etc. In this embodiment, the connection between the reinforcing rib 3, the first cross beam 1, the second cross beam 2 and the floor panel 4 is provided with a round corner structure, which can reduce the stress concentration at the connection; in addition, for the extrusion die used to form the vehicle floor structure, the corresponding parts are also designed with round corners, which is beneficial to prolong the service life of the extrusion die.

[0064] In some embodiments, the wall thickness of the first cross beam 1 is greater than or equal to 2mm and less than or equal to 4mm, and the wall thickness of the second cross beam 2 is greater than or equal to 2mm and less than or equal to 4mm.

[0065] The wall thickness of the first cross beam 1 can be 2mm, 2.5mm, 3mm, 3.5mm, 3.55mm, 4mm, etc. The wall thickness of the second cross beam 2 can be 2mm, 2.5mm, 3mm, 3.5mm, 3.55mm, 4mm, etc. In this embodiment, when the wall thickness of the first cross beam 1 and the second cross beam 2 is within the above range, the design requirements of the cross beam strength can be met.

[0066] The extrusion forming process of the above vehicle floor structure can be: selecting an aluminum alloy material as a material rod, processing an extrusion die, after the extrusion die is processed, the processed material rod is sent into an extrusion cylinder, and the product is formed in the extrusion direction through the extrusion die. It should be noted that the vehicle floor structure is wide, and the floor panel 4 therein is thin, so a large extrusion force is required during extrusion.

[0067] The total process flow of the existing floor cross beam assembly is: using drawing, trimming, punching, flanging and shaping processes to produce the floor, using forming or extrusion, machining processes to produce the cross beam, and then welding or riveting the cross beam and the floor together to form the floor cross beam assembly.

[0068] In the embodiment of the present application, after the vehicle floor structure is integrally extruded and formed, a machining process is performed, and the floor cross beam assembly can be obtained. Compared with the multiple processes of the existing floor cross beam assembly, the number of processes is greatly reduced, a plurality of dies are saved compared with the stamping process, and welding or riveting is not required, which improves integration, shortens the process flow and reduces costs. It should be noted that in the machining process, hole machining operations are required for the first cross beam 1 and the second cross beam 2.

[0069] The embodiment of the present application further provides a vehicle comprising the vehicle floor structure. Since the vehicle comprises the vehicle floor structure, the vehicle also has the beneficial effects of the vehicle floor structure, which will not be repeated here.

[0070] The vehicle can be a sedan, a business car, an off-road vehicle, a sport utility vehicle, etc. The vehicle can be a pure electric vehicle, a fuel vehicle, a hybrid vehicle, etc.

[0071] In the present application, unless otherwise explicitly defined, the terms "mounting", "connection", "connecting" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside 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.

[0072] The terms "first", "second", "third", "fourth" and the like (if any) in the present application are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

[0073] The term "and / or" in the present application is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents that the front and rear associated objects have an "or" relationship.

[0074] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A vehicle floor structure characterized by comprising: The floor panel, the first beam, the second beam and the protruding rib are integrally extruded; The floor panel is divided into a first side region and a second side region along a first direction with a center line as a boundary, the first beam and the second beam extend along a second direction and are arranged in the first side region and the second side region of the floor panel respectively; The protruding rib extends along the second direction, the protruding rib is arranged on the floor panel and is located between the first beam and the second beam along the first direction.

2. The vehicle floor structure according to claim 1, characterized by The first beam and the second beam have equal height and equal width; The number of the protruding rib is one, and the distance between the protruding rib and the first beam along the first direction is equal to the distance between the protruding rib and the second beam.

3. The vehicle floor structure according to claim 2, characterized by, The protruding rib is symmetric to a vertical symmetry plane, and the vertical symmetry plane is perpendicular to the first direction.

4. The vehicle floor structure according to any one of claims 1 to 3, characterized by, The thickness of the floor panel is greater than or equal to 1 mm and less than or equal to 1.5 mm.

5. The vehicle floor structure according to any one of claims 1 to 3, characterized by, The protruding rib is a solid structure; The protruding rib is perpendicular to the second direction, and the shape of the cross section of the protruding rib is any one of a rectangle, a trapezoid and a semicircle.

6. The vehicle floor structure according to any one of claims 1 to 3, characterized by The width of the protruding rib is greater than or equal to 3 mm and less than or equal to 4 mm; The height of the protruding rib is greater than or equal to 1 mm and less than or equal to 3 mm.

7. The vehicle floor structure according to any one of claims 1 to 3, characterized by The material of the floor panel, the first beam, the second beam and the protruding rib is an aluminum alloy.

8. The vehicle floor structure according to any one of claims 1 to 3, characterized by The connection between the protruding rib and the floor panel is provided with a first round corner; The connection between the first beam and the floor panel is provided with a second round corner; The connection between the second beam and the floor panel is provided with a third round corner.

9. The vehicle floor structure according to any one of claims 1 to 3, characterized by, The wall thickness of the first beam and / or the second beam is greater than or equal to 2 mm and less than or equal to 4 mm.

10. A vehicle characterized by comprising: The vehicle floor structure comprises the floor panel, the first beam, the second beam and the protruding rib.

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