A mid-channel reinforcing structure

Abstract

The application discloses a middle channel reinforcing structure, which comprises a middle channel body, a middle channel structure reinforcing glue block, a middle channel reinforcing plate and a middle channel rear mounting plate. The application designs corresponding hole structures on the middle channel reinforcing plate, the middle channel structure reinforcing glue block and the middle channel mounting plate, forms two groups of warm air drying channels, and enables the electrophoretic film to be fully heated and dried. The warm air drying channel I passes through a channel flow guide structure, enables the drying warm air to flow uniformly along the metal surface of the middle channel body and the middle channel reinforcing plate, the warm air drying channel II passes through a channel flow guide structure, enables the drying warm air to cover the edge or dead angle area of the middle channel body and the middle channel reinforcing plate, compensates the airflow blind area of the warm air drying channel I, and ensures the comprehensiveness of electrophoretic drying in the cavity of the middle channel reinforcing structure. Meanwhile, the foaming glue gradually expands and blocks the flow paths of the two groups of warm air drying channels during the warm air drying process, and the local over-drying caused by excessive flow of the drying warm air is avoided.

Description

Technical Field

[0001] This invention belongs to the field of automotive design and manufacturing technology, and specifically relates to a mid-channel reinforcement structure. Background Technology

[0002] With increasingly stringent automotive lightweighting standards, OEMs have abandoned the traditional approach of achieving crash safety through reinforcing the body panels themselves (such as increasing panel thickness and using high-strength steel) and adding body panel reinforcement components. The main drawbacks of this approach include: 1) Increased vehicle weight leads to increased fuel consumption and decreased fuel economy; 2) This results in a complex vehicle body structure, making implementation difficult. Some solutions may be impossible to implement due to factors such as manufacturing processes, thus necessitating a reduction in target requirements.

[0003] Therefore, structural reinforcement blocks are now commonly used. This improves vehicle weight reduction, collision performance, and simplifies assembly in the workshop, enhancing operability. However, because these structural reinforcement blocks are essentially solid structures installed between the central channel reinforcement plate and the central channel body, they severely obstruct the flow of drying air. This results in incomplete drying of the cavity electrophoretic film formed by the central channel reinforcement plate and the central channel body, as well as localized over-drying of the cavity electrophoretic film, affecting corrosion resistance.

[0004] From a structural perspective, this invention provides a novel approach by designing corresponding structures in the central channel reinforcing plate, the central channel structural reinforcement block, and the central channel mounting plate to form a channel for unobstructed drying and warm air circulation. This allows the electrophoretic membrane within the cavity formed by the central channel reinforcing plate and the central channel body to be fully heated and dried, which helps to solve the aforementioned problems. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a central channel reinforcement structure, which will effectively improve the above-mentioned issues.

[0006] To achieve the above objectives, this invention provides the following technical solution: First, a central channel reinforcement structure is provided, including a central channel body, a central channel structural reinforcement block, a central channel reinforcement plate and a central channel rear mounting plate, wherein the central channel structural reinforcement block is disposed in the cavity between the central channel body and the central channel reinforcement plate; The central channel body is a metal stamping part with a Z-shaped cross section; The central channel structure reinforcement block includes a skeleton, on which are provided a block through rib I, a block through rib II, a block through hole, foaming adhesive, and a welding sheet; The central channel reinforcing plate is provided with planar heat-conducting holes, inclined heat-conducting holes, mounting plate mounting holes, and reinforcing plate mounting holes. The inclined heat-conducting holes, the through-ribs of the adhesive block I, and the through-holes of the adhesive block form a warm air drying channel I, and the planar heat-conducting holes, the through-ribs of the adhesive block II, and the through-holes of the adhesive block form a warm air drying channel II.

[0007] Preferably, both the skeleton and the central channel reinforcing plate are configured as a U-shaped hollow cavity, and one side of the outer wall of the U-shaped hollow cavity is a curved surface. Several sets of the adhesive block through holes penetrate the outer wall of the skeleton along the curved surface, and two sets of the foam adhesive are disposed on the skeleton and are respectively located on both sides of the adhesive block through holes. The expanding foam expands after being heated by the drying warm air, and the expanded foam is used to block part of the flow path in the warm air drying channel I and the warm air drying channel II.

[0008] Preferably, the drying warm air is covered by the warm air drying channel I on the sheet metal surface of the central channel body and the central channel reinforcing plate, and then flows out through the mounting holes of the mounting plate.

[0009] Preferably, the drying warm air is covered by the warm air drying channel II on the sheet metal surface of the central channel body and the central channel reinforcing plate, and then flows out through the rear edge of the central channel reinforcing plate.

[0010] Preferably, the two sets of adhesive block through-ribs I are located at both ends near the through holes of the adhesive block, the two sets of adhesive block through-ribs II are located on both sides of the middle part of the through holes of the adhesive block, and the two sets of welding sheets are respectively located at both ends of the skeleton.

[0011] Preferably, the plane on the curved surface of the central channel reinforcing plate that bends inward once along both ends is the first bending plane, and the two sets of mounting holes of the mounting plate are opened on the first bending plane of the central channel reinforcing plate.

[0012] Preferably, the plane on the curved surface of the central channel reinforcing plate that bends inward twice along both ends is the secondary bending plane, and the two sets of planar heat-conducting holes are opened on the secondary bending plane of the central channel reinforcing plate.

[0013] Preferably, the bend transition point where the middle channel reinforcing plate bends inward once along both ends is an inclined surface, and the two sets of inclined heat conduction holes are opened on the inclined surface of the middle channel reinforcing plate.

[0014] Preferably, the mounting holes of the reinforcing plate are opened at the two ends of the "U" shape on the central channel reinforcing plate.

[0015] Preferably, the middle channel reinforcing plate is mounted on the middle channel body through the reinforcing plate mounting holes, and the middle channel rear mounting plate is connected to the middle channel reinforcing plate through the mounting plate mounting holes.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention designs corresponding hole structures in the central channel reinforcing plate, the central channel structural reinforcement block, and the central channel mounting plate to form two sets of warm air drying channels. This allows the electrophoretic membrane inside the cavity formed by the central channel reinforcing plate and the central channel body to be fully heated and dried. Specifically, warm air drying channel I is the first set of warm air channel paths. Through the channel guide structure, the drying warm air flows evenly along the sheet metal surface of the central channel body and the central channel reinforcing plate, ensuring that the heat of the warm air is efficiently and evenly transferred to the sheet metal surface. Warm air drying channel II is the second set of warm air channel paths. Through the channel guide structure, the drying warm air can cover the edges or dead corner areas of the central channel body and the central channel reinforcing plate, making up for the airflow blind spots of warm air drying channel I and ensuring the comprehensiveness of electrophoretic drying inside the cavity of the central channel reinforcing structure.

[0017] 2. In the warm air drying process of this invention, the warm air directly contacts the sheet metal surface, and the foam is gradually heated through metal heat conduction. When the foam is initially heated, the EVA matrix softens and the foaming agent begins to decompose and expand. At this time, both sets of warm air drying channels are unobstructed. As the electrophoretic drying continues, the foam continues to be heated and expands, and its material volume expands by 3-5 times, gradually blocking the flow path in the two sets of warm air drying channels, thus avoiding local over-drying caused by excessive flow of warm air.

[0018] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an exploded view of the central channel reinforcement structure provided by the present invention; Figure 2 This is a schematic diagram of the structure of the reinforced adhesive block with a central channel provided by the present invention; Figure 3 This is a schematic diagram of the structure of the central channel reinforcing plate provided by the present invention; Figure 4 This is a cross-sectional schematic diagram of the central channel reinforcement structure provided by the present invention. Figure 1 ; Figure 5 This is a cross-sectional schematic diagram of the central channel reinforcement structure provided by the present invention. Figure 2.

[0021] Explanation of reference numerals in the attached figures: 1. Central channel body; 2. Central channel structural reinforcement block; 21. Skeleton; 22. Glue block through rib I; 23. Glue block through rib II; 24. Glue block through hole; 25. Foam; 26. Welding sheet; 3. Central channel reinforcing plate; 31. Planar heat conduction hole; 32. Angled heat conduction hole; 33. Mounting hole of mounting plate; 34. Mounting hole of reinforcing plate; 4. Central channel rear mounting plate; 5. Warm air drying channel I; 6. Warm air drying channel II. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] The same reference numerals in the accompanying drawings denote the same or similar elements, components, or parts, and therefore, repeated descriptions of the same or similar elements, components, or parts may be omitted below. It should also be understood that although terms such as first, second, third, etc., indicating numbers may be used herein to describe various devices, elements, components, or parts, these devices, elements, components, or parts should not be limited by these terms. That is, these terms are only used to distinguish one from another. For example, a first device may also be referred to as a second device, without departing from the essential technical solution of the invention. Furthermore, the terms "and / or" and "and / or" refer to all combinations including any one or more of the listed items.

[0024] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0025] This invention provides a central channel reinforcement structure: like Figure 1 As shown, the central channel reinforcement structure includes a central channel body 1, a central channel structural reinforcement block 2, a central channel reinforcement plate 3, and a central channel rear mounting plate 4. The central channel structural reinforcement block 2 is disposed in the cavity between the central channel body 1 and the central channel reinforcement plate 3. Specifically, the central channel body 1 is a metal stamping part with a Z-shaped cross section, which serves as a basic load-bearing component to transmit longitudinal or lateral loads during vehicle movement. The central channel reinforcing plate 3 is an additional metal plate connected to the central channel body 1, which can improve the load-bearing capacity of the central channel. The central channel structural reinforcement adhesive block 2 fills the cavity between the central channel body 1 and the central channel reinforcing plate 3. After the adhesive is cured, it is combined with the metal parts to improve the structural strength of the central channel. The central channel rear mounting plate 4 is a connecting component located at the rear section of the central channel.

[0026] like Figure 3 As shown, the middle channel reinforcing plate 3 is provided with planar heat conduction holes 31, inclined heat conduction holes 32, mounting plate mounting holes 33 and reinforcing plate mounting holes 34. The middle channel reinforcing plate 3 is set as a Z-shaped hollow cavity, and one side of the Z-shaped hollow cavity is a curved surface. The reinforcing plate mounting holes 34 are opened at the planes at both ends of the Z-shape on the middle channel reinforcing plate 3. Specifically, the central channel reinforcing plate 3 is installed on the central channel body 1 through the reinforcing plate mounting hole 34, forming the main load-bearing frame with the central channel body 1. The hollow cavity design of the central channel reinforcing plate 3, under the premise of weight reduction, forms a box-shaped structure after cooperating with the central channel body 1, which can improve the longitudinal load-bearing capacity of the central channel, especially to cope with the torsional impact during driving. The plane that bends inward once along both ends of the curved surface of the central channel reinforcing plate 3 is the first bending plane, the plane that bends inward twice along both ends is the second bending plane, and the bending transition point that bends inward once along both ends is the inclined surface. Furthermore, two sets of mounting plate mounting holes 33 are opened on the first bending plane of the middle channel reinforcing plate 3, two sets of planar heat conduction holes 31 are opened on the second bending plane of the middle channel reinforcing plate 3, and two sets of inclined heat conduction holes 32 are opened on the inclined surface of the middle channel reinforcing plate 3. Specifically, the rear mounting plate 4 of the central channel is connected to the central channel reinforcement plate 3 through the mounting plate mounting holes 33. During vehicle assembly, it is also connected and fixed to structures such as the rear floor, rear seat crossbeam or rear longitudinal beam to ensure the continuous transfer of front and rear loads of the vehicle body. The planar heat conduction holes 31 are used to conduct heat in the drying channel and accelerate the heat dissipation in the central channel area. The inclined heat conduction holes 32 can promote the directional flow of hot air through the inclined angle and improve the heat conduction efficiency.

[0027] like Figure 2 As shown, the central channel structure reinforcing adhesive block 2 includes a skeleton 21. The skeleton 21 is provided with adhesive block through rib I 22, adhesive block through rib II 23, adhesive block through hole 24, foam adhesive 25 and welding piece 26. The skeleton 21 is set as a Z-shaped hollow cavity, and one side of the Z-shaped hollow cavity is a curved surface. Two sets of welding pieces 26 are respectively set at both ends of the skeleton 21. Specifically, the skeleton 21 is a hollow cavity in the shape of a zigzag, which can ensure that it matches the cavity of the central channel body 1 and the central channel reinforcing plate 3. The skeleton 21 can be made of PA6 (Polyamide 6 or Nylon 6), which is a semi-crystalline thermoplastic engineering plastic with high strength and high toughness. It has a high melting point and good impact resistance. It can be manufactured into complex shapes through injection molding. The skeleton 21 and the welding piece 26 are integrally injection molded in one piece. Its density is low, which has the advantages of lightweight and high strength, and helps to reduce the weight of the overall structure. Furthermore, several sets of through holes 24 of the adhesive blocks penetrate the outer wall of the frame 21 along the curved surface, two sets of through ribs I 22 of the adhesive blocks are set at both ends near the through holes 24 of the adhesive blocks, two sets of through ribs II 23 of the adhesive blocks are set on both sides of the middle part of the through holes 24 of the adhesive blocks, and two sets of foam adhesive 25 are set on the frame 21 and are respectively located on both sides of the through holes 24 of the adhesive blocks. Specifically, several sets of through holes 24 are evenly distributed along the curved surface of the skeleton 21 to form a drying channel. The through holes 24 are opened in non-critical load-bearing areas to further reduce the weight of the glue block structure. The through ribs I 22 and II 23 are designed as strip-shaped reinforcing rib structures and are arranged at both ends and the middle sides of the through holes 24 to form a support and prevent deformation around the through holes 24 due to stress concentration. They also serve to form a drying channel. Specifically, the foam 25 can be made of EVA (Ethylene-Vinyl-Acetate copolymer), which has the advantages of being lightweight, soft, and resistant to chemical corrosion. The solid sheet foam 25 and the skeleton 21 are molded by a two-stage injection molding process. The foam 25 contains physical or chemical foaming agents and gradually expands and solidifies when exposed to high temperature.

[0028] like Figure 4 As shown, the inclined heat conduction hole 32, the glue block through rib I22 and the glue block through hole 24 form a warm air drying channel I5. The drying warm air covers the sheet metal surface of the middle channel body 1 and the middle channel reinforcing plate 3 through the warm air drying channel I5, and then flows out through the mounting hole 33 of the mounting plate. Specifically, the warm air drying channel I5 is the first group of warm air channels. The drying warm air is introduced into the cavity between the middle channel reinforcing plate 3 and the middle channel body 1 through the inclined heat conduction hole 32. Then, through the flow guiding structure of the rubber block through rib I22, the drying warm air flows evenly along the sheet metal surface of the middle channel body 1 and the middle channel reinforcing plate 3, ensuring that the heat of the warm air is efficiently and evenly transferred to the sheet metal surface, so that the electrophoretic membrane can be fully heated and dried. The warm air is finally discharged from the mounting hole 33 of the mounting plate.

[0029] like Figure 5As shown, the planar heat conduction hole 31, the glue block through rib II 23 and the glue block through hole 24 form a warm air drying channel II 6. The drying warm air covers the sheet metal surface of the middle channel body 1 and the middle channel reinforcing plate 3 through the warm air drying channel II 6, and then flows out through the rear edge of the middle channel reinforcing plate 3. Specifically, the warm air drying channel II6 is the second set of warm air channel paths. The drying warm air is introduced into the cavity between the central channel reinforcing plate 3 and the central channel body 1 through the planar heat conduction hole 31. Then, through the flow guiding structure of the rubber block through rib II23, the drying warm air flows evenly along the sheet metal surface of the central channel body 1 and the central channel reinforcing plate 3, ensuring that the heat of the warm air is efficiently and evenly transferred to the sheet metal surface, so that the electrophoretic membrane can be fully heated and dried. The warm air is finally discharged from the rear edge of the central channel reinforcing plate 3, which can cover the edge or dead corner area of ​​the central channel body 1 and the central channel reinforcing plate 3, make up for the airflow blind spot of the warm air drying channel I5, and ensure the comprehensiveness of electrophoretic drying in the cavity of the central channel reinforcing structure.

[0030] Furthermore, the expanding foam 25 expands after being heated by the drying warm air, and the expanded expanding foam 25 is used to block part of the flow path in the warm air drying channel I5 and the warm air drying channel II6; Specifically, during the warm air drying process, the warm air directly contacts the sheet metal surface, and the foam 25 is gradually heated through metal heat conduction. When the foam 25 is initially heated to about 80-100°, the EVA matrix softens and the foaming agent begins to decompose and expand. At this time, the warm air drying channel I5 and the warm air drying channel II6 are unobstructed. As the electrophoretic drying continues, when the foam 25 is heated to about 100-150°, its material volume expands by 3-5 times, gradually blocking the flow path in the two sets of drying channels, thus avoiding local over-drying caused by excessive flow of warm air. Specifically, when the foam adhesive 25 is heated to about 150-180°, it expands completely, and the EVA cross-links and cures, forming a stable and elastic solid foam structure. The central channel structure reinforcing adhesive block 2, the central channel reinforcing plate 3, and the central channel body 1 are connected as a whole to form a central channel reinforcing structure. After electrophoretic drying, the sheet metal surface has anti-corrosion properties.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A central channel reinforcement structure, characterized in that: It includes a central channel body (1), a central channel structural reinforcement block (2), a central channel reinforcing plate (3), and a central channel rear mounting plate (4). The central channel structural reinforcement block (2) is disposed in the cavity between the central channel body (1) and the central channel reinforcing plate (3). The central channel body (1) is a metal stamping part with a Z-shaped cross section; The central channel structure reinforcing adhesive block (2) includes a skeleton (21), on which adhesive block through rib I (22), adhesive block through rib II (23), adhesive block through hole (24), foaming adhesive (25) and welding sheet (26) are provided; The central channel reinforcing plate (3) is provided with planar heat conduction holes (31), inclined heat conduction holes (32), mounting plate mounting holes (33) and reinforcing plate mounting holes (34). The inclined heat-conducting hole (32), the glue block through rib I (22) and the glue block through hole (24) form a warm air drying channel I (5), and the planar heat-conducting hole (31), the glue block through rib II (23) and the glue block through hole (24) form a warm air drying channel II (6). The skeleton (21) and the middle channel reinforcing plate (3) are both set as a Z-shaped hollow cavity, and one side of the Z-shaped hollow cavity is a curved surface. Several sets of glue block through holes (24) penetrate through the outer wall of the skeleton (21) along the curved surface. Two sets of foam glue (25) are set on the skeleton (21) and are located on both sides of the glue block through holes (24). The expanding foam (25) expands after being dried and baked by warm air. The expanded expanding foam (25) is used to block part of the flow path in the warm air drying channel I (5) and the warm air drying channel II (6).

2. The central channel reinforcement structure according to claim 1, characterized in that: Two sets of the rubber block through ribs I (22) are set at both ends near the rubber block through hole (24), and two sets of the rubber block through ribs II (23) are set on both sides of the middle part of the rubber block through hole (24).

3. The central channel reinforcement structure according to claim 1, characterized in that: The two sets of welding pieces (26) are respectively disposed at both ends of the skeleton (21).

4. The central channel reinforcement structure according to claim 1, characterized in that: The plane on the curved surface of the middle channel reinforcing plate (3) that bends inward once along both ends is the first bending plane, and the two sets of mounting holes (33) of the mounting plate are opened on the first bending plane of the middle channel reinforcing plate (3).

5. The central channel reinforcement structure according to claim 1, characterized in that: The plane on the curved surface of the middle channel reinforcing plate (3) that bends inward twice along both ends is the secondary bending plane, and the two sets of the planar heat conduction holes (31) are opened on the secondary bending plane of the middle channel reinforcing plate (3).

6. The central channel reinforcement structure according to claim 1, characterized in that: The bending transition point of the middle channel reinforcing plate (3) is a bend where it bends inward once from both ends. Two sets of the bend heat conduction holes (32) are opened on the bend of the middle channel reinforcing plate (3).

7. The central channel reinforcement structure according to claim 1, characterized in that: The mounting holes (34) of the reinforcing plate are opened at the two ends of the Z-shaped plate (3) in the middle channel.

8. The central channel reinforcement structure according to claim 1, characterized in that: The middle channel reinforcing plate (3) is installed on the middle channel body (1) through the reinforcing plate mounting hole (34), and the middle channel rear mounting plate (4) is connected to the middle channel reinforcing plate (3) through the mounting plate mounting hole (33).

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