Vehicle front firewall assembly and vehicle

Abstract

The invention relates to the technical field of vehicle bodies, in particular to a vehicle front firewall assembly and a vehicle. The vehicle front firewall assembly comprises a firewall body, the firewall body comprises a front firewall panel, a middle stand column reinforcing plate, a brake pedal reinforcing plate, a left extension plate and a right extension plate, and the thickness of the middle stand column reinforcing plate, the thickness of the brake pedal reinforcing plate, the thickness of the left extension plate and the thickness of the right extension plate are larger than the thickness of the front firewall panel; the firewall body is provided with a function unit installation point, and the thickness of the function unit installation point is larger than that of the firewall body. Different material thicknesses are set for the firewall body according to the difference of working conditions in different areas, different structural strengths are achieved, and finally differential design of the structural strengths is achieved. And the thickness of each functional unit mounting point is set to be greater than that of the firewall body, so that the safety of each functional unit mounting point is improved, and the structural stability when the firewall is mounted with other structures is ensured.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle bodies, and in particular to a vehicle front firewall assembly and a vehicle. Background Art

[0002] The existing traditional automotive front firewall structure is in the form of an assembly composed of multiple parts spliced ​​together through assembly welding, cold connection, gluing and other processes. During the early design stage, the parts were limited by the stamping process. The segmentation of the parts not only needed to consider the feasibility of the process, the accessibility of the connection, the reliability of the seal, etc., but also the connection strength of the segmented parts was lower than the performance of the whole part. The front firewall assembly is composed of multiple stamped parts, and the part structure design is complex and the layout integration is poor. The stamped and spliced ​​front firewall assembly has a large number of parts and many overlapping edges, resulting in weight and cost that are not lean enough. In addition, the thickness of the traditional firewall assembly is basically the same everywhere, and the installation strength cannot be guaranteed when installing and fixing adjacent structures. Summary of the Invention

[0003] In order to solve the above technical problems, the present disclosure provides a vehicle front firewall assembly and a vehicle.

[0004] A first aspect of the present disclosure provides a vehicle front firewall assembly, comprising a firewall body, wherein the firewall body includes a front firewall panel, a center pillar reinforcement plate, a brake pedal reinforcement plate, a left extension plate, and a right extension plate, wherein the thickness of the center pillar reinforcement plate, the brake pedal reinforcement plate, the left extension plate, and the right extension plate are all greater than the thickness of the front firewall panel; the firewall body has a functional unit mounting point, and the thickness of the functional unit mounting point is greater than the thickness of the firewall body.

[0005] Optionally, the functional unit mounting points include an air conditioning mounting point, a brake pedal mounting point and a central control mounting point; the thickness of the hollow mounting point, the thickness of the air conditioning mounting point and the thickness of the brake pedal mounting point increase sequentially.

[0006] Optionally, the air conditioner mounting point includes a first mounting column protruding outward from the rear side of the firewall body and a first mounting hole passing through the mounting column and the firewall body.

[0007] Optionally, the brake pedal mounting point includes a second mounting hole passing through the firewall body; and / or, the central control mounting point includes a second mounting column protruding outward from the rear side of the firewall body and a second mounting hole passing through the second mounting column and the firewall body.

[0008] Optionally, the firewall body protrudes to one side to form a first assembly surface, the brake pedal mounting point and the steering shaft fixing point are set on the first assembly surface, and the thickness of the first assembly surface is greater than the thickness of the firewall body.

[0009] Optionally, the firewall body is provided with reinforcing ribs, the reinforcing ribs are arranged around the first assembly surface, and the height of the reinforcing ribs is greater than or equal to the thickness of the first assembly surface.

[0010] Optionally, the firewall body protrudes to one side to form a second assembly surface, an air conditioning external circulation air inlet is provided at the second assembly surface, and a thickness at the second assembly surface is greater than a thickness of the firewall body.

[0011] Optionally, the firewall body protrudes to one side to form a third assembly surface, an air-conditioning box pipe installation opening is provided on the third assembly surface, and a thickness of the third assembly surface is greater than a thickness of the firewall body.

[0012] A second aspect of the present disclosure provides a vehicle, comprising the vehicle front firewall assembly as described in any one of the above items.

[0013] The technical solution provided by the embodiments of the present disclosure has the following advantages over the prior art:

[0014] The present disclosure provides a vehicle front firewall assembly comprising a firewall body, which includes a front firewall panel, a center pillar reinforcement plate, a brake pedal reinforcement plate, a left extension plate, and a right extension plate. The center pillar reinforcement plate, the brake pedal reinforcement plate, the left extension plate, and the right extension plate are thicker than the front firewall panel. The firewall body has functional unit mounting points, and the thickness of the functional unit mounting points is greater than the thickness of the firewall body. The firewall body is designed with different material thicknesses to achieve different structural strengths based on different operating conditions in different areas. Ultimately, a differentiated structural strength design is achieved. The thickness of each functional unit mounting point is set to be greater than the thickness of the firewall body, which improves safety at each functional unit mounting point and ensures structural stability when installed with other structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 Schematic diagram of the structure of the vehicle front firewall assembly according to an embodiment of the present invention.

[0018] Among them, 1. Firewall body; 2. Air conditioning installation point; 3. First assembly surface; 301. Brake pedal installation point; 302. Steering shaft fixing point; 4. Central control installation point; 5. Air conditioning external circulation air intake; 6. Air conditioning box pipe installation port; 7. Reinforcement rib; 8. Fixing point under the instrument panel; 9. Left extension plate; 10. Right extension plate. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0021] like Figure 1 As shown, an embodiment of the present disclosure provides a vehicle front firewall assembly, including a firewall body 1, wherein the firewall body 1 includes a front firewall panel, a center pillar reinforcement plate, a brake pedal reinforcement plate, a left extension plate 9, and a right extension plate 10. The front firewall panel, the center pillar reinforcement plate, the brake pedal reinforcement plate, the left extension plate 9, and the right extension plate 10 are integrally formed. The positional relationship between the center pillar reinforcement plate, the brake pedal reinforcement plate, and the front firewall panel corresponds to the position of the functional components to be installed thereon. The left extension plate 9 and the right extension plate 10 are respectively located on the left and right sides of the front firewall panel. The "left" and "right" mentioned here are consistent with the left and right directions of the vehicle. The firewall body 1 has a functional unit mounting point, and the thickness of the functional unit mounting point is greater than the thickness of the firewall body 1. Since the functional unit mounting point is used to install the functional unit, it is necessary to perform a local thickening process to improve the structural strength at the functional unit mounting point. The thickness of the center pillar reinforcement plate, brake pedal reinforcement plate, left extension plate and swimming extension plate are all greater than the thickness of the front firewall panel. Other positions of the firewall body have no special performance or structural requirements and do not need to be thickened. Different material thicknesses are set according to the performance and strength requirements of different areas. On the basis of meeting the overall structural strength of the firewall assembly, the overall structure of the firewall assembly is made lighter and thinner, reducing production costs.

[0022] Specifically, the vehicle front firewall assembly provided in the disclosed embodiment integrates a brake pedal reinforcement plate, a center pillar reinforcement plate, a front firewall panel, a left extension plate 9, and a right extension plate 10. It utilizes a heat-treatment-free die-cast aluminum alloy material, and achieves ideal tensile strength, yield strength, and elongation after high-pressure die-casting. This front firewall assembly enables integrated manufacturing, saving manufacturing costs and improving manufacturing efficiency, while also reducing the overall vehicle weight and achieving lightweighting. The thickness of each functional unit's mounting point is set to be greater than the thickness of the firewall body 1, improving safety at each functional unit's mounting point and ensuring structural stability when installed with other structures.

[0023] Furthermore, in some embodiments of the present disclosure, the functional unit mounting points include the air conditioning mounting point 2, the brake pedal mounting point 301, and the central control mounting point 4; the brake pedal mounting point needs to withstand the greatest force, therefore, the brake pedal mounting point 301 is the thickest, followed by the air conditioning mounting point 2, then the central control mounting point 4, and the thickness of the firewall body 1 is the smallest. The thickness of the firewall body 1 is 1.5mm, the thickness of the air conditioning mounting point 2 is 2.5mm, the thickness of the brake pedal mounting point 301 is 3mm, and the thickness of the central control mounting point 4 is 2.2mm. The different areas of the firewall body 1 are all die-casted from a heat-treatment-free die-cast aluminum alloy material. Different areas can be designed to have different strengths according to actual working conditions. Specifically, different material thicknesses are set according to the differences in working conditions in different areas. The material thickness of the entire front firewall assembly ranges from 1.5mm to 5mm. Since the brake pedal mounting point 301 needs to withstand a larger force, the thickness of the brake pedal mounting point 301 is set to 3mm. The force that the central control mounting point 4 needs to withstand is less than the force that the brake pedal mounting point 301 needs to withstand. The thickness of the central control mounting point 4 is 2.2mm. The force that the air-conditioning mounting point 2 needs to withstand is between the brake pedal mounting point 301 and the central control mounting point 4. The thickness of the air-conditioning mounting point 2 is set to 2.5mm.

[0024] Furthermore, in some embodiments of the present disclosure, the air conditioner mounting point 2 includes a first mounting column protruding outward from the rear side of the firewall body 1 and a first mounting hole penetrating the first mounting column and the firewall body 1. Specifically, in the area corresponding to the air conditioner, the rear side of the firewall body 1 protrudes outward to form a first mounting column. The number of first mounting columns can be set to multiple. In some preferred embodiments of the present disclosure, the number of first mounting columns is set to 3, and the 3 first mounting columns are distributed in a triangular shape, so that the installation structure of the air conditioner is more stable. A first mounting hole is opened along the axial direction of the first mounting column. The first mounting hole penetrates the firewall body 1 and the first mounting column. The air conditioner is fixedly installed using the first mounting column and the first mounting hole. The thickness of the first mounting column is 2.5 mm, that is, the difference between the outer diameter and the inner diameter of the first mounting column is 5 mm.

[0025] Furthermore, in some embodiments of the present disclosure, the brake pedal mounting point 301 includes a second mounting hole that passes through the firewall body 1 and a plurality of first fixing holes arranged around the second mounting hole. Specifically, in some preferred embodiments, the second mounting hole is a circular hole, and the number of the first fixing holes is four, and the four first fixing holes are arranged in a rectangular array around the second mounting hole. Of course, the shape of the second mounting hole can also be rectangular or other shapes, and the number of fixing holes can also be two, three, and or more than four. Specifically, it can be set according to the actual working conditions of the vehicle. The fact that the second mounting hole is set as a circular hole and the number of the first fixing holes is set as four in the above-mentioned embodiment does not limit the scope of protection of the present disclosure.

[0026] Furthermore, in some embodiments of the present disclosure, the central control mounting point 4 includes a second mounting post formed by protruding outward from the rear side of the firewall body 1 and a second mounting hole that passes through the second mounting post and the firewall body 1. Specifically, the central control mounting point 4 is set in the area corresponding to the firewall body 1 and the center console. In some preferred embodiments of the present disclosure, the central control mounting point 4 is set in the upper part of the firewall body 1, close to the upper edge of the firewall body 1. The rear side of the firewall body 1 protrudes outward in the area corresponding to the center console to form a second mounting post. The number of second mounting posts can be set to multiple. In some preferred embodiments of the present disclosure, the number of second mounting posts is set to two. The two first mounting posts are set in the left and right directions, so that the installation structure of the center console is more stable. A second mounting hole is opened along the axial direction of the second mounting post. The second mounting hole passes through the firewall body 1 and the second mounting post. The second mounting post and the second mounting hole are used to fix the center console. The thickness of the second mounting post is 2.2 mm, that is, the difference between the outer diameter and the inner diameter of the second mounting post is 4.4 mm.

[0027] Furthermore, in some embodiments of the present disclosure, the firewall body 1 is raised to one side to form a first assembly surface 3. A brake pedal mounting point 301 and a steering shaft fixing point 302 are provided on this first assembly surface 3. The thickness of the first assembly surface 3 is greater than that of the firewall body itself. Specifically, in some embodiments, the thickness of the first assembly surface 3 is 3 mm. This ensures both the required strength for the brake pedal and steering shaft mounting and a lightweight design. Because the first assembly surface 3 must withstand significant forces during assembly, its thickness is set to the same as that of the brake pedal mounting point. The first assembly surface 3 is located on the left side of the firewall body 1 and is raised rearward. The first assembly surface 3 is formed by die-casting and then machined to ensure its contour accuracy. The brake pedal mounting point 301 is located to the upper right of the steering shaft fixing point 302. In some preferred embodiments of the present disclosure, the steering shaft fixing point 302 includes a third mounting hole and a second fixing hole arranged around the third mounting hole. The third mounting hole is an elliptical hole, and there are three second fixing holes arranged in a triangular array around the third mounting hole.

[0028] Instrument panel lower fixing plates are respectively provided on the left and right sides of the first assembly surface 3 for fixing the instrument panel.

[0029] Furthermore, in some embodiments of the present disclosure, a reinforcing rib 7 is provided on the firewall body 1. The reinforcing rib 7 is arranged around the first assembly surface, and the height of the reinforcing rib 7 is greater than or equal to the thickness of the first assembly surface. Therefore, at the location where the first reinforcing rib is provided, its structural strength is greater than the structural strength of the first assembly surface. Specifically, in some embodiments, the height of the first reinforcing rib 7 is 3 mm. Specifically, in traditional vehicle front firewall assembly structures, an additional reinforcing plate is usually required at the location of the brake pedal reinforcement plate, that is, two plates are provided to improve structural strength. The vehicle front firewall assembly of the present disclosure is formed using an integrated die-casting process, and the structural reinforcement effect can be achieved by simply providing the reinforcing rib 7 around the first assembly surface 3. When providing the reinforcing rib 7, the reinforcing rib 7 is provided in locations where the structural strength is weak through simulation. The height of the reinforcing rib 7 is set to 3 mm. The height of the reinforcing rib 7 referred to here refers to the height of the top surface of the reinforcing rib 7 from the firewall body 1. The density and height of the reinforcing ribs at different positions may also be different, that is, their setting position, density and height are related to the required stiffness of each position. At positions where high stiffness is required, the reinforcing ribs can be set denser, and at positions where slightly lower stiffness is required, the reinforcing ribs can be appropriately set sparser.

[0030] Furthermore, in some embodiments of the present disclosure, the firewall body 1 protrudes to one side to form a second assembly surface, and an air-conditioning external circulation air inlet 5 is provided at the second assembly surface. The thickness of the second assembly surface is greater than the thickness of the firewall body. Specifically, in some embodiments, the thickness at the second assembly surface is 2 mm, which can not only meet the installation strength requirements of the air-conditioning external circulation air inlet pipe, but also achieve a lightweight effect. The second assembly surface is located on the upper right side of the left side of the firewall body 1. The firewall body 1 protrudes to the rear side to form the second assembly surface. The second assembly surface is formed by die-casting, and then the contour of the second assembly surface is ensured by machining. In some preferred embodiments of the present disclosure, the air-conditioning external circulation air inlet 5 is provided near the upper edge of the firewall body 1.

[0031] Furthermore, in some embodiments of the present disclosure, the firewall body 1 protrudes to one side to form a third assembly surface, and an air-conditioning box pipe installation port 6 is provided at the third assembly surface. The thickness of the third assembly surface is greater than the thickness of the firewall body. Specifically, in some embodiments, the thickness of the third assembly surface is 2 mm, which can not only meet the installation strength requirements of the air-conditioning box pipe, but also achieve a lightweight effect. Specifically, the third assembly surface is set in the middle of the firewall body 1, and the middle of the firewall body 1 protrudes to the rear side to form the third assembly surface. The third assembly surface is formed by die-casting and then machined to ensure the contour of the third assembly surface. In some preferred embodiments of the present disclosure, the third assembly surface is set between the three first installation columns, that is, the three first installation columns are arranged around the third assembly surface.

[0032] A second aspect of the present disclosure provides a vehicle, comprising the vehicle front firewall assembly according to any one of the above embodiments.

[0033] The vehicle front firewall assembly provided by the embodiment of the present disclosure has the following advantages:

[0034] (1) It adopts 2500T one-piece die-casting structure. The thin-walled one-piece die-casting front firewall assembly structure uses heat-treatment-free die-casting aluminum alloy material. After high-pressure die-casting, it achieves ideal tensile strength, yield strength and elongation.

[0035] (2) The one-piece thin-wall die-cast front firewall structure is optimized through CAE. By adding reinforcement ribs 7 or adjusting the material thickness of reinforcement ribs 7 in the NVH key area, it is very effective in improving the dynamic stiffness of the center console, steering shaft, and brake pedal mounting point 301. It also has a significant effect on reducing road noise. In addition, the one-piece thin-wall die-casting can increase the overall stiffness of the front firewall and improve the force transmission performance of the front firewall during a collision. The one-piece thin-wall die-cast front firewall structure integrates the installation requirements of key hard points (including but not limited to the following functions): air conditioning mounting point 2, CCB (center console) mounting point, steering shaft mounting point, brake pedal mounting point 301, etc. The integrated layout of the important hard points of the front firewall is achieved, and the dimensional accuracy of the mounting points is more stable and the consistency is better.

[0036] (3) Compared with the traditional sheet metal welding process, the high-pressure integrated die-casting process applied to the front cabin structure can effectively reduce the overlap edges and connection points (hard connection - spot welding / rivets / bolts, adhesive bonding), improve the sealing performance of the front cabin structure, and achieve weight reduction and lightweighting.

[0037] (4) The different areas of the vehicle's front firewall assembly structure are all die-cast from heat-treatment-free die-cast aluminum alloy. Different areas can be designed to have different strengths based on actual operating conditions. Differentiated structural strength is achieved by designing ribs with varying densities, heights, and thicknesses.

[0038] (5) The front firewall assembly structure and surrounding assemblies of the vehicle are connected by aluminum spot welding, self-piercing rivets (SPR) or hot melt self-tapping screw connection (FDS) with structural adhesive. Bolts are used in key areas of local connection. This can reduce the number of parts by 80%, connection costs by 55%, and weight by 50%. It also reduces the investment in plant equipment and the use of site area, improving the efficiency of lightweight design of parts, corrosion resistance and manufacturing efficiency.

[0039] In this document, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, indirect connection via an intermediate medium, internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this document based on the specific circumstances.

[0040] The term "and / or" herein is inclusive, for example, "A; and / or B" means only A, or only B, or both A and B. "Multiple" means two or more.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

[0042] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments described herein, but is to be construed in the widest manner consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle front firewall assembly, characterized in that: It includes a firewall body, which includes a front firewall panel, a center pillar reinforcement plate, a brake pedal reinforcement plate, a left extension plate and a right extension plate. The thickness of the center pillar reinforcement plate, the brake pedal reinforcement plate, the left extension plate and the right extension plate are all greater than the thickness of the front firewall panel; the firewall body has a functional unit mounting point, and the thickness of the functional unit mounting point is greater than the thickness of the firewall body.

2. The vehicle front firewall assembly according to claim 1, characterized in that: The functional unit mounting points include an air conditioning mounting point, a brake pedal mounting point and a central control mounting point; the thickness of the hollow mounting point, the thickness of the air conditioning mounting point and the thickness of the brake pedal mounting point increase in sequence.

3. The vehicle front firewall assembly according to claim 2, characterized in that: The air conditioner mounting point includes a first mounting column protruding outward from the rear side of the firewall body and a first mounting hole penetrating the first mounting column and the firewall body.

4. The vehicle front firewall assembly according to claim 3, characterized in that: The brake pedal mounting point includes a second mounting hole penetrating the firewall body and a plurality of first fixing holes arranged around the second mounting hole.

5. The vehicle front firewall assembly according to claim 2, characterized in that: The central control installation point includes a second installation column protruding outward from the rear side of the firewall body and a third installation hole passing through the second installation column and the firewall body.

6. The vehicle front firewall assembly according to claim 4, characterized in that: The firewall body protrudes to one side to form a first assembly surface, the brake pedal mounting point and the steering shaft fixing point are arranged on the first assembly surface, and the thickness of the first assembly surface is greater than the thickness of the firewall body.

7. The vehicle front firewall assembly according to claim 6, characterized in that: The firewall body is provided with reinforcing ribs, which are arranged around the first assembly surface. The height of the reinforcing ribs is greater than or equal to the thickness of the first assembly surface.

8. The vehicle front firewall assembly according to any one of claims 1 to 7, characterized in that: The firewall body is raised to one side to form a second assembly surface, an air conditioning external circulation air inlet is provided on the second assembly surface, and a thickness of the second assembly surface is greater than a thickness of the firewall body.

9. The vehicle front firewall assembly according to any one of claims 1 to 7, characterized in that: The firewall body is raised to one side to form a third assembly surface, and an air-conditioning box pipe installation opening is provided on the third assembly surface. The thickness of the third assembly surface is greater than the thickness of the firewall body.

10. A vehicle, characterized in that: The vehicle front firewall assembly comprises the vehicle front firewall assembly according to any one of claims 1 to 9.

Images