A vehicle front bulkhead reinforcement structure

Abstract

This utility model discloses a front bulkhead reinforcement structure for vehicles, including a main frame. The main frame is a rectangular metal plate structure with a first reinforcing beam and a second reinforcing beam parallel to each other along its length on the front side. The first reinforcing beam is located in the upper half of the main frame, and the second reinforcing beam is located in the lower half. This utility model, through a multi-dimensional reinforcement structure design including main reinforcing beams, main reinforcing ribs, auxiliary reinforcing ribs, and reinforcing arms, increases the bending stiffness of the main frame and reduces the maximum deformation during a frontal collision, effectively improving the front-end collision resistance and ensuring passenger compartment safety. Furthermore, by using high-strength aluminum alloy, incorporating lightweight opening areas, and optimizing the cross-sectional shape of the reinforcement structure, the overall weight of the front bulkhead is reduced while maintaining strength. Additionally, by integrating wiring holes, mounting brackets, and side connecting flanges, the use of additional connecting parts is reduced.

Description

Technical Field

[0001] This utility model relates to the field of automotive body structure technology, specifically to a front bulkhead reinforcement structure for automobiles. Background Technology

[0002] As a key load-bearing component at the front of the vehicle body, the existing front bulkhead must simultaneously meet the functional requirements of supporting engine compartment components, isolating noise and vibration between the engine compartment and the passenger compartment, and resisting the impact of frontal collisions.

[0003] However, current front bulkhead structures often employ a single flat panel or simple reinforcing ribs. Under frontal collisions or bumpy road conditions, localized stress concentration can easily occur, leading to bulkhead deformation or even cracking, affecting vehicle safety. While increasing strength in some front bulkheads improves structural stability, it significantly increases vehicle weight, contradicting the trend towards lightweight vehicles and indirectly increasing fuel consumption. Furthermore, some front bulkheads are not optimized for fire resistance; in the event of a fire in the engine compartment, flames and high temperatures can easily penetrate the passenger compartment through gaps in the bulkhead, posing a safety hazard.

[0004] Therefore, it is necessary to invent a vehicle front bulkhead reinforcement structure to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a vehicle front bulkhead reinforcement structure to solve the above-mentioned shortcomings in the technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vehicle front bulkhead reinforcement structure, comprising a bulkhead main frame, wherein the bulkhead main frame is a rectangular metal plate structure, and a first reinforcing beam and a second reinforcing beam are provided parallel to each other along the length direction on its front side, with the first reinforcing beam located in the upper half of the bulkhead main frame and the second reinforcing beam located in the lower half of the bulkhead main frame; the front side of the bulkhead main frame is also provided with a main reinforcing rib and an auxiliary reinforcing rib, the main reinforcing rib being arranged along the height direction of the bulkhead main frame and having its two ends perpendicularly connected to the first reinforcing beam and the second reinforcing beam respectively, and the auxiliary reinforcing rib being a V-shaped structure, symmetrically distributed on both sides of the main reinforcing rib, and having its two ends connected to the edge of the bulkhead main frame, the first reinforcing beam or the second reinforcing beam respectively.

[0007] As a preferred embodiment of this utility model, a side connecting flange is provided on one side of the main frame of the enclosure. The side connecting flange and the main frame of the enclosure are integrally formed, and several bolt holes are provided on the side connecting flange for fixed connection with the side frame of the vehicle body. A fireproof connection part is provided on the other side of the main frame of the enclosure. The fireproof connection part is a hollow cavity structure, and the cavity is filled with high temperature resistant fireproof cotton. A sealing strip installation groove is provided on the edge of the fireproof connection part.

[0008] As a preferred embodiment of this utility model, the main frame of the enclosure is provided with a wire-passing hole group in the middle, the wire-passing hole group is composed of multiple circular through holes, and an annular reinforcing boss is provided on the outer periphery of the wire-passing hole group, the height of the boss being 1.5 times the thickness of the main frame of the enclosure.

[0009] As a preferred embodiment of this utility model, mounting supports are provided at the four corners of the main frame of the enclosure. The mounting supports are cylindrical protrusions, and the center of the mounting supports is provided with internal threaded holes for installing pipe supports or electrical components in the engine compartment.

[0010] As a preferred embodiment of this utility model, the main frame of the enclosure is further provided with a reinforcing arm and a lightweight opening area. The reinforcing arm is a long strip protrusion, one end of which is connected to the second reinforcing beam, and the other end extends to the bottom edge of the main frame of the enclosure. The lightweight opening area is a waist-shaped hole structure, which is evenly distributed in the area between the first reinforcing beam and the second reinforcing beam, and the edge of the lightweight opening area is provided with a rounded corner transition structure.

[0011] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. Through the multi-dimensional reinforcement structure design of main reinforcing beams, main reinforcing ribs, auxiliary reinforcing ribs and reinforcing arms, the bending stiffness of the main frame of the bulkhead can be improved, the maximum deformation during frontal collision can be reduced, effectively improving the front collision resistance of the vehicle body and ensuring the safety of the passenger compartment. The use of high-strength aluminum alloy material, the setting of lightweight opening areas and the optimization of the cross-sectional shape of the reinforcement structure reduce the overall weight of the front bulkhead while ensuring strength. Furthermore, the use of additional connecting parts is reduced by integrating the wiring hole group, mounting brackets and side connecting flanges. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0013] Figure 1 This is a first-view perspective perspective view of the overall structure of this utility model; Figure 2 This is a second-view perspective perspective view of the overall structure of this utility model; Figure 3 This is a third-view perspective view of the overall structure of this utility model; Figure 4 This is a front view of the overall structure of this utility model.

[0014] Explanation of reference numerals in the attached figures: 1. Main frame of the enclosure; 2. First reinforcing beam; 3. Main reinforcing rib; 4. Second reinforcing beam; 5. Mounting support; 6. Cable hole assembly; 7. Reinforcing arm; 8. Boss; 9. Lightweight opening area; 10. Side connecting flange; 11. Fireproof connection part; 12. Auxiliary reinforcing rib. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0016] This utility model provides, for example Figure 1-4 The illustrated front bulkhead reinforcement structure includes a main frame 1. The main frame 1 is a rectangular metal plate structure. A first reinforcing beam 2 and a second reinforcing beam 4 are parallel to each other along the length of the front of the main frame 1. The first reinforcing beam 2 is located in the upper half of the main frame 1, and the second reinforcing beam 4 is located in the lower half. The main frame 1 also has a main reinforcing rib 3 and an auxiliary reinforcing rib 12. The main reinforcing rib 3 is arranged along the height of the main frame 1, and its two ends are perpendicularly connected to the first reinforcing beam 2 and the second reinforcing beam 4, respectively. The auxiliary reinforcing rib 12 has a V-shaped structure, symmetrically distributed on both sides of the main reinforcing rib 3, and its two ends are connected to the edge of the main frame 1 and the first reinforcing beam 2 or the second reinforcing beam 4, respectively. In this embodiment, the main frame 1, as the load-bearing base of the overall structure, adopts a rectangular metal plate design, providing a stable installation foundation for all reinforcing components and functional parts. Simultaneously, its flat plate shape can adapt to the installation space at the front of the vehicle body, ensuring assembly compatibility with surrounding components.

[0017] The first reinforcing beam 2 and the second reinforcing beam 4 are distributed parallel to each other along the length of the main frame of the enclosure in the upper and lower areas, forming a transverse load-bearing skeleton. This can directly resist the transverse load generated by frontal collisions or bumpy road conditions, prevent the main frame of the enclosure from undergoing overall bending deformation, and improve the transverse deformation resistance.

[0018] The main reinforcing rib 3 connects the first and second reinforcing beams along the height direction to form a longitudinal support axis, connecting the transverse reinforcing beams and the main frame of the enclosure into an integral load-bearing structure, effectively dispersing local concentrated stress and preventing local cracking caused by excessive force in one direction.

[0019] The auxiliary reinforcing rib 12 adopts a V-shaped symmetrical design, with one end connected to the edge of the main frame 1 of the enclosure and the other end connected to the reinforcing beam. It can transfer the dispersed load of the edge of the enclosure to the main load-bearing frame, while filling the stress gap between the main reinforcing rib 3 and the frame edge, further optimizing the stress distribution and reducing the risk of local deformation.

[0020] Furthermore, in the above technical solution, a side connecting flange 10 is provided on one side of the main frame 1 of the vehicle front bulkhead reinforcement structure. The side connecting flange 10 and the main frame 1 of the bulkhead are integrally formed, and the side connecting flange 10 is provided with several bolt holes for fixed connection with the vehicle side frame. A fireproof connecting part 11 is provided on the other side of the main frame 1 of the vehicle front bulkhead reinforcement structure. The fireproof connecting part 11 is a hollow cavity structure, and the cavity is filled with high temperature resistant fireproof cotton. The edge of the fireproof connecting part 11 is provided with a sealing strip installation groove.

[0021] In this embodiment, the side connecting flange 10 is integrally formed with the main frame 1 of the side panel and has bolt holes. It can be fixed to the side frame of the vehicle body without additional welding connectors, simplifying the assembly process. At the same time, the integrally formed structure avoids the weak points of the welded joints and improves the connection stability. The hollow cavity of the fireproof connection part 11 is filled with high-temperature fireproof cotton, which can prevent the spread of fire from the engine compartment to the driver's cabin and reduce the risk of fire. The sealing strip mounting groove on the edge can further improve the sealing performance and reduce the transmission of engine compartment noise to the driver's cabin, taking into account both fireproof and sound insulation effects.

[0022] Furthermore, in the above technical solution, a wire-passing hole group 6 is provided in the middle of the main frame 1 of a vehicle front bulkhead reinforcement structure. The wire-passing hole group 6 is composed of multiple circular through holes, and an annular reinforcing boss 8 is provided on the outer periphery of the wire-passing hole group 6. The height of the boss 8 is 1.5 times the thickness of the main frame 1 of the bulkhead.

[0023] In this embodiment, the wire hole group 6 and the boss 8 centrally house the wire harness and conduit, avoiding wear or interference caused by messy wiring; the height of the outer annular boss is 1.5 times the thickness of the surrounding plate, which can enhance the local strength around the wire hole and prevent hole deformation or cracking caused by wiring.

[0024] Furthermore, in the above technical solution, a mounting bracket 5 is provided at each of the four corners of the main frame 1 of the front bulkhead reinforcement structure of a vehicle. The mounting bracket 5 is a cylindrical protrusion structure, and an internal threaded hole is opened in the center of the mounting bracket 5 for installing pipe brackets or electrical components in the engine compartment.

[0025] Furthermore, in the above technical solution, a main frame 1 of a vehicle front bulkhead reinforcement structure is also provided with a reinforcing arm 7 and a lightweight opening area 9. The reinforcing arm 7 is a long strip protrusion, one end of which is connected to the second reinforcing beam 4, and the other end extends to the bottom edge of the main frame 1. The lightweight opening area 9 is an oblong hole structure, which is evenly distributed in the area between the first reinforcing beam 2 and the second reinforcing beam 4, and the edge of the lightweight opening area 9 is provided with a rounded corner transition structure.

[0026] In this embodiment, the long strip-shaped protrusion of the reinforcing arm 7 connects the second reinforcing beam and the bottom edge of the enclosure, specifically strengthening the support strength of the bottom of the enclosure and preventing the bottom from sagging and deforming due to vibration during vehicle operation; the long strip structure saves more material than the block structure while ensuring support, balancing strength and lightweight.

[0027] The lightweight opening area features nine oblong holes evenly distributed between the two reinforcing beams. This reduces the amount of metal material used and lowers the overall weight of the front bulkhead without weakening the longitudinal and transverse strength in the main load-bearing direction, which aligns with the trend of automotive lightweighting. The rounded corners at the hole edges avoid stress concentration issues associated with right-angle holes and prevent cracking at the openings.

[0028] The working process of the vehicle front bulkhead reinforcement structure provided by this utility model is as follows: The main frame 1 of the side panel is fitted to the pre-set mounting surface of the vehicle body. Bolts are inserted through the bolt holes on the side connecting flange 10 and tightened to the specified torque to fix the side panel to the vehicle body. A sealing strip is embedded in the mounting groove at the edge of the fireproof connection part 11, ensuring that the strip completely covers the groove to improve the sealing of the driver's compartment and engine compartment, while also enhancing the fireproof effect.

[0029] The main frame 1 of the enclosure serves as the primary load-bearing structure. Together with the first reinforcing beam 2, the second reinforcing beam 4, and the main reinforcing rib 3, it forms a dual support system, both laterally and longitudinally, resisting vibration loads generated by road bumps during vehicle operation and preventing enclosure deformation. The waist-shaped perforation structure of the lightweight perforated area 9 reduces the overall weight of the enclosure without weakening the main load-bearing strength, thereby reducing vehicle drag and indirectly lowering energy consumption. The auxiliary reinforcing rib 12 transfers the dispersed vibration loads from the enclosure edges to the main reinforcing beam and the main reinforcing rib 3, further optimizing stress distribution and preventing fatigue damage caused by localized stress concentration.

[0030] When a fire occurs in the engine compartment, the high-temperature resistant fireproof cotton inside the fireproof connection 11 can block the transmission of flames and high temperatures to the cockpit, slowing the spread of the fire and buying time for the occupants to escape.

[0031] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A front wall reinforcement structure for a vehicle, comprising a wall main frame (1), characterized by: The main frame (1) of the enclosure is a rectangular metal plate structure. A first reinforcing beam (2) and a second reinforcing beam (4) are provided parallel to each other along the length direction on the front side. The first reinforcing beam (2) is located in the upper half of the main frame (1) of the enclosure, and the second reinforcing beam (4) is located in the lower half of the main frame (1) of the enclosure. The main frame (1) of the enclosure is also provided with a main reinforcing rib (3) and an auxiliary reinforcing rib (12) on the front side. The main reinforcing rib (3) is set along the height direction of the main frame (1) of the enclosure, and its two ends are perpendicularly connected to the first reinforcing beam (2) and the second reinforcing beam (4) respectively. The auxiliary reinforcing rib (12) is a V-shaped structure, symmetrically distributed on both sides of the main reinforcing rib (3), and its two ends are connected to the edge of the main frame (1) of the enclosure, the first reinforcing beam (2) or the second reinforcing beam (4) respectively.

2. The vehicle front bulkhead reinforcement structure according to claim 1, characterized in that: The main frame (1) of the enclosure is provided with a side connecting flange (10) on one side. The side connecting flange (10) and the main frame (1) of the enclosure are integrally formed. The side connecting flange (10) is provided with several bolt holes for fixed connection with the side frame of the vehicle body. The other side of the main frame (1) of the enclosure is provided with a fireproof connection part (11). The fireproof connection part (11) is a hollow cavity structure. The cavity is filled with high temperature fireproof cotton. The edge of the fireproof connection part (11) is provided with a sealing strip installation groove.

3. The vehicle front bulkhead reinforcement structure according to claim 1, characterized in that: The main frame (1) of the enclosure is provided with a wire hole group (6) in the middle. The wire hole group (6) is composed of multiple circular through holes, and the outer periphery of the wire hole group (6) is provided with an annular reinforcing boss (8). The height of the boss (8) is 1.5 times the thickness of the main frame (1) of the enclosure.

4. The vehicle front bulkhead reinforcement structure according to claim 1, characterized in that: The main frame (1) of the enclosure is provided with mounting supports (5) at the four corners. The mounting supports (5) are cylindrical protrusions and have internal threaded holes in the center for installing pipe supports or electrical components in the engine compartment.

5. The vehicle front bulkhead reinforcement structure according to claim 1, characterized in that: The main frame (1) of the enclosure is also provided with a reinforcing arm (7) and a lightweight opening area (9). The reinforcing arm (7) is a long strip protrusion, one end of which is connected to the second reinforcing beam (4), and the other end extends to the bottom edge of the main frame (1). The lightweight opening area (9) is a waist-shaped hole structure, which is evenly distributed in the area between the first reinforcing beam (2) and the second reinforcing beam (4), and the edge of the lightweight opening area (9) is provided with a rounded corner transition structure.

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