An A-pillar anti-collision structure and its installation method

Abstract

This invention relates to the field of automobile manufacturing technology. Specifically, it relates to an A-pillar under-collision structure and its installation method, including an A-pillar under-hinge column (1); the A-pillar under-hinge column (1) is connected to a front compartment vertical plate (2); a front vertical plate connecting plate (3) and an A-pillar under-reinforcing plate (4) are respectively provided on the A-pillar under-hinge column (1); a cavity structure is provided between the front vertical plate connecting plate (3) and the A-pillar under-reinforcing plate (4); the cavity structure is located on one side of the front compartment vertical plate (2) and the A-pillar under-hinge column (1); the front vertical plate connecting plate and the A-pillar under-reinforcing plate form a closed-section cavity under-collision structure in front of the A-pillar under-hinge column and the front compartment vertical plate, thereby strengthening the structural strength of the lower part of the A-pillar and also strengthening the connection strength between the front compartment vertical plate and the A-pillar under-hinge column; it can effectively reduce the intrusion of the A-pillar under-hinge column in the event of a small offset collision and solve the problem of wheel intrusion into the passenger compartment.

Description

Technical Field

[0001] This invention relates to the field of automobile manufacturing technology, and more specifically, to an A-pillar under-collision structure and its installation method. Background Technology

[0002] With the continuous development of the automotive industry, the market demands increasingly higher standards for vehicle collision safety performance. In a small offset collision, the tires impact and compress the A-pillar lower hinge and the front compartment vertical panel, causing severe deformation of these components and resulting in excessive intrusion. Furthermore, the connection between the A-pillar lower hinge and the front compartment vertical panel is prone to tearing, allowing the wheel to intrude into the passenger compartment and seriously threatening the lives of the occupants. Currently, most models on the market rely solely on spot welding or a single-layer connecting plate to connect the A-pillar lower hinge and the front compartment vertical panel, resulting in poor collision protection. Therefore, the problem of tearing at the connection between the A-pillar lower hinge and the front compartment vertical panel and wheel intrusion into the passenger compartment during a small offset collision remains largely unresolved.

[0003] The applicant discovered through a search that Chinese patent document with publication number 217048785U, published on July 26, 2022, discloses a lower A-pillar of an automobile, an automobile A-pillar, and an automobile. The lower A-pillar includes an inner lower A-pillar panel, an outer lower A-pillar panel, a first hinge reinforcement plate, and a second hinge reinforcement plate. The outer lower A-pillar panel and the inner lower A-pillar panel have a main deformation area located between the first hinge reinforcement plate and the second hinge reinforcement plate. The lower A-pillar also includes a first support member and a second support member, which are disposed on the main deformation area of ​​the outer lower A-pillar panel. This device also fails to solve the aforementioned technical problem.

[0004] Therefore, in order to improve or solve at least one of the above problems, it is necessary to provide an A-pillar anti-collision structure and installation method that can improve the connection strength and anti-collision performance between the A-pillar lower hinge column and the front cabin vertical plate. Summary of the Invention

[0005] The purpose of this invention is to provide an A-pillar under-collision structure and installation method that can improve the connection strength and anti-collision performance between the A-pillar under-hinge column and the front cabin vertical plate.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: an A-pillar anti-collision structure, including an A-pillar lower hinge column; the A-pillar lower hinge column is connected to a front cabin vertical plate; a front vertical plate connecting plate and an A-pillar lower reinforcing plate are respectively provided on the A-pillar lower hinge column; a cavity structure is provided between the front vertical plate connecting plate and the A-pillar lower reinforcing plate; the cavity structure is located on one side of the front cabin vertical plate and the A-pillar lower hinge column.

[0007] The forward vertical plate connecting plate includes a bent section; the forward cabin vertical plate includes a first forward cabin vertical plate connecting section; the A-pillar lower hinge column includes a hinge column connecting section; the first forward cabin vertical plate connecting section is connected to the hinge column connecting section; the cavity structure includes a first cavity; the first cavity is disposed in the bent section; the first forward cabin vertical plate connecting section and the hinge column connecting section are both disposed in the first cavity.

[0008] The bending section has a first connecting plate connecting section and a second connecting plate connecting section on both sides; the A-pillar lower reinforcing plate includes a first reinforcing plate connecting section; the first reinforcing plate connecting section has a second reinforcing plate connecting section and a third reinforcing plate connecting section on both sides; the first connecting plate connecting section and the second reinforcing plate connecting section are connected; and a second cavity is provided between the first connecting plate connecting section and the first reinforcing plate connecting section.

[0009] One side of the second connecting plate connecting segment is connected to the hinge column connecting segment; the other side of the second connecting plate connecting segment is connected to the third reinforcing plate connecting segment; and a third cavity is provided between the second connecting plate connecting segment and the third reinforcing plate connecting segment.

[0010] A front baffle beam is connected to the first front cabin vertical plate connecting section; one end of the front baffle beam is connected to the first front cabin vertical plate connecting section; the other end of the front baffle beam is connected to the lower part of the front baffle body.

[0011] Both the front vertical plate connecting plate and the lower reinforcing plate of the A-pillar are connected with first connecting bolts; the front baffle beam is provided with a first projection weld nut; the first connecting bolt is connected in the first projection weld nut.

[0012] The first forward cabin vertical plate connecting section is connected to the second forward cabin vertical plate connecting section; the second forward cabin vertical plate connecting section is connected to the front longitudinal beam support plate; one end of the front longitudinal beam support plate is connected to the second forward cabin vertical plate connecting section; the other end of the front longitudinal beam support plate is connected to the front longitudinal beam; the front longitudinal beam is connected to the lower part of the front baffle body.

[0013] The front vertical plate connecting plate and the lower reinforcing plate of the A-pillar are both connected with second connecting bolts; the front longitudinal beam support plate is provided with a second projection weld nut; the second connecting bolt is connected in the second projection weld nut.

[0014] A method for installing the A-pillar under-collision structure, the method comprising the following steps:

[0015] 1) Connect the front vertical plate connecting plate to the A-pillar lower reinforcing plate;

[0016] 2) Connect the front baffle crossbeam to the front cabin vertical plate and the lower part of the front baffle body respectively;

[0017] 3) Connect the front longitudinal beam support plate to the front longitudinal beam and the front cabin vertical plate respectively; connect the front longitudinal beam to the lower part of the front baffle body;

[0018] 4) Connect the front vertical plate connecting plate and the A-pillar lower reinforcing plate to the A-pillar lower hinge column, the front baffle beam, and the front longitudinal beam support plate, respectively.

[0019] In step 1), the front vertical plate connecting plate is welded to the lower reinforcing plate of the A-pillar; in step 2), both ends of the front baffle beam are welded to the front cabin vertical plate and the lower part of the front baffle body, respectively; in step 3), the front longitudinal beam support plate is welded to the front longitudinal beam and the front cabin vertical plate, respectively; the front longitudinal beam is welded to the lower part of the front baffle body.

[0020] The beneficial effects of this application are as follows:

[0021] The front vertical plate connecting plate and the lower A-pillar reinforcing plate of this application form a closed-section cavity anti-collision structure in front of the lower A-pillar hinge column and the front compartment vertical plate, thereby strengthening the structural strength of the lower A-pillar and enhancing the connection strength between the front compartment vertical plate and the lower A-pillar hinge column. This effectively reduces the intrusion of the lower A-pillar hinge column in small offset collisions, solves the problem of wheel intrusion into the passenger compartment, and improves the safety collision performance of the vehicle in small offset collisions. Attached Figure Description

[0022] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0023] Figure 1 This is a schematic diagram of the anti-collision structure under the A-pillar.

[0024] Figure 2 This is an exploded view of the anti-collision structure under the A-pillar.

[0025] Figure 3 This is a cross-sectional view of the anti-collision structure under the A-pillar.

[0026] Figure 4 This is a schematic diagram showing the connection status between the front vertical plate connecting plate and the A-pillar reinforcement plate of the A-pillar anti-collision structure.

[0027] The markings in the above figures are all:

[0028] The diagram is marked as follows:

[0029] 1. A-pillar lower hinge column, 101. Hinge column connecting section,

[0030] 2. Forward cabin vertical plate, 201. First forward cabin vertical plate connecting section, 202. Second forward cabin vertical plate connecting section.

[0031] 3. Front vertical plate connecting plate, 301. Bending section, 302. First connecting plate connecting section, 303. Second connecting plate connecting section.

[0032] 4. A-pillar lower reinforcing plate, 401. First reinforcing plate connecting section, 402. Second reinforcing plate connecting section, 403. Third reinforcing plate connecting section.

[0033] 5. First cavity, 501, Second cavity, 502, Third cavity.

[0034] 6. Front baffle crossbeam,

[0035] 7. Lower part of the front baffle body,

[0036] 8. First connecting bolt; 801. First projection weld nut.

[0037] 9. Front longitudinal beam support plate,

[0038] 10. Front longitudinal beam,

[0039] 11. Second connecting bolt; 111. Second projection weld nut. Detailed Implementation

[0040] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and to facilitate its implementation.

[0041] Figure 1 The A-pillar under-collision structure shown includes an A-pillar under-hinge column 1; the A-pillar under-hinge column 1 is connected to the front cabin vertical plate 2; the A-pillar under-hinge column 1 is respectively provided with a front vertical plate connecting plate 3 and an A-pillar under-reinforcing plate 4; a cavity structure is provided between the front vertical plate connecting plate 3 and the A-pillar under-reinforcing plate 4; the cavity structure is located on one side of the front cabin vertical plate 2 and the A-pillar under-hinge column 1.

[0042] The front vertical plate connecting plate 3 and the A-pillar lower reinforcing plate 4 form a closed-section cavity anti-collision structure in front of the A-pillar lower hinge column 1 and the front compartment vertical plate 2, thereby strengthening the structural strength of the lower part of the A-pillar and also enhancing the connection strength between the front compartment vertical plate 2 and the A-pillar lower hinge column 1. This effectively reduces the intrusion of the A-pillar lower hinge column 1 during small offset collisions, solves the problem of wheel intrusion into the passenger compartment, and improves the vehicle's safety collision performance during small offset collisions. The material of the A-pillar lower reinforcing plate 4 is HC420 / 780DPD+Z, with a material thickness of 2.5mm. The material of the front vertical plate connecting plate 3 is HC420 / 780DPD+Z, with a material thickness of 2.5mm.

[0043] The forward vertical plate connecting plate 3 includes a bending section 301; the forward cabin vertical plate 2 includes a first forward cabin vertical plate connecting section 201; the A-pillar lower hinge column 1 includes a hinge column connecting section 101; the first forward cabin vertical plate connecting section 201 is connected to the hinge column connecting section 101; the cavity structure includes a first cavity 5; the first cavity 5 is located in the bending section 301; the first forward cabin vertical plate connecting section 201 and the hinge column connecting section 101 are both located in the first cavity 5.

[0044] The bending section 301 has a U-shaped cross-section; the first cavity 5 is located in the bending section 301; the cross-sections of the first front compartment vertical plate connecting section 201 and the hinge column connecting section 101 are both Z-shaped structures; the ends of the first front compartment vertical plate connecting section 201 and the hinge column connecting section 101 are welded; and the ends of the first front compartment vertical plate connecting section 201 and the hinge column connecting section 101 are inserted into the first cavity 5 of the bending section 301; when the vehicle is impacted, the bending section 301 can effectively buffer the connection between the first front compartment vertical plate connecting section 201 and the hinge column connecting section 101.

[0045] The bending section 301 has a first connecting plate connecting section 302 and a second connecting plate connecting section 303 on both sides; the A-pillar lower reinforcing plate 4 includes a first reinforcing plate connecting section 401; the first reinforcing plate connecting section 401 has a second reinforcing plate connecting section 402 and a third reinforcing plate connecting section 403 on both sides; the first connecting plate connecting section 302 and the second reinforcing plate connecting section 402 are connected; and a second cavity 501 is provided between the first connecting plate connecting section 302 and the first reinforcing plate connecting section 401.

[0046] The first connecting plate connecting segment 302 and the second connecting plate connecting segment 303 are respectively located on both sides of the bending segment 301 and are integral with the bending segment 301; the second reinforcing plate connecting segment 402 and the third reinforcing plate connecting segment 403 are respectively located on both sides of the first reinforcing plate connecting segment 401 and are integral with the first reinforcing plate connecting segment 401; the bending segment 301 is spot-welded to the first reinforcing plate connecting segment 401; the first connecting plate connecting segment 302 and the second reinforcing plate connecting segment 402 are spot-welded to each other; the second cavity 501 is located between the first connecting plate connecting segment 302, the first reinforcing plate connecting segment 401 and the bending segment 301.

[0047] One side of the second connecting plate connecting section 303 is connected to the hinge column connecting section 101; the other side of the second connecting plate connecting section 303 is connected to the third reinforcing plate connecting section 403; and a third cavity 502 is provided between the second connecting plate connecting section 303 and the third reinforcing plate connecting section 403.

[0048] The third cavity 502 is located between the second connecting plate connecting section 303, the bending section 301 and the third reinforcing plate connecting section 403; the second cavity 501 and the third cavity 502 can enhance the overall structural strength; when the vehicle is impacted, the second cavity 501 and the third cavity 502 can provide effective cushioning.

[0049] A front baffle beam 6 is connected to the first front cabin vertical plate connecting section 201; one end of the front baffle beam 6 is connected to the first front cabin vertical plate connecting section 201; the other end of the front baffle beam 6 is connected to the lower part 7 of the front baffle body.

[0050] One end of the front baffle beam 6 is welded to the first front cabin vertical plate connecting section 201; the other end of the front baffle beam 6 is welded to the lower part 7 of the front baffle body; the front baffle beam 6 is bolted to the front vertical plate connecting plate 3 and the A-pillar lower reinforcing plate 4; thus, the front baffle beam 6 can provide an installation position for the front vertical plate connecting plate 3 and the A-pillar lower reinforcing plate 4, and when the front vertical plate connecting plate 3 and the A-pillar lower reinforcing plate 4 are impacted, the front baffle beam 6 can transmit and disperse the impact force, making the front vertical plate connecting plate 3 and the A-pillar lower reinforcing plate 4 more impact resistant.

[0051] The front vertical plate connecting plate 3 and the A-pillar lower reinforcing plate 4 are both connected with first connecting bolts 8; the front baffle beam 6 is provided with a first projection weld nut 801; the first connecting bolt 8 is connected in the first projection weld nut 801.

[0052] The front vertical plate connecting plate 3 and the A-pillar lower reinforcing plate 4 are welded together; both the front vertical plate connecting plate 3 and the A-pillar lower reinforcing plate 4 are provided with bolt mounting holes, and the first connecting bolt 8 is installed in the bolt mounting holes; the bolt mounting holes are located on the side of the A-pillar lower reinforcing plate 4 near the front baffle beam 6; multiple first projection weld nuts 801 are installed on the top surface of the front baffle beam 6; the first connecting bolt 8 is threadedly connected to the first projection weld nuts 801, thereby enabling the sides of the front vertical plate connecting plate 3 and the A-pillar lower reinforcing plate 4 to be fixed on the front baffle beam 6.

[0053] The first forward cabin vertical plate connecting section 201 is connected to the second forward cabin vertical plate connecting section 202; the second forward cabin vertical plate connecting section 202 is connected to the front longitudinal beam support plate 9; one end of the front longitudinal beam support plate 9 is connected to the second forward cabin vertical plate connecting section 202; the other end of the front longitudinal beam support plate 9 is connected to the front longitudinal beam 10; the front longitudinal beam 10 is connected to the lower part 7 of the front baffle body.

[0054] The second forward cabin vertical plate connecting section 202 and the first forward cabin vertical plate connecting section 201 are an integral structure; the end of the front longitudinal beam support plate 9 is welded to the second forward cabin vertical plate connecting section 202; the front longitudinal beam support plate 9 is located on one side of the front baffle crossbeam 6; one end of the front longitudinal beam support plate 9 is first welded to the front longitudinal beam 10; the front longitudinal beam support plate 9 is spliced ​​with the front baffle crossbeam 6; the other end of the front longitudinal beam support plate 9 is welded to the second forward cabin vertical plate connecting section 202; the front longitudinal beam 10 is welded to the lower part 7 of the front baffle body.

[0055] The front vertical plate connecting plate 3 and the A-pillar lower reinforcing plate 4 are both connected with second connecting bolts 11; the front longitudinal beam support plate 9 is provided with a second projection weld nut 111; the second connecting bolt 11 is connected in the second projection weld nut 111.

[0056] The front vertical plate connecting plate 3 and the A-pillar lower reinforcing plate 4 are welded together; both the front vertical plate connecting plate 3 and the A-pillar lower reinforcing plate 4 are provided with bolt mounting holes, and the second connecting bolt 11 is installed in the bolt mounting holes; the bolt mounting holes are located on the side of the A-pillar lower reinforcing plate 4 near the front longitudinal beam support plate 9; multiple second projection weld nuts 111 are installed on the top surface of the front longitudinal beam support plate 9; the second connecting bolt 11 and the second projection weld nuts 111 are threaded together, thereby enabling the sides of the front vertical plate connecting plate 3 and the A-pillar lower reinforcing plate 4 to be fixed on the front longitudinal beam support plate 9.

[0057] A method for installing an A-pillar under-collision structure, the method comprising the following steps:

[0058] 1) Connect the front vertical plate connecting plate 3 to the A-pillar lower reinforcing plate 4;

[0059] 2) Connect the front baffle beam 6 to the front cabin vertical plate 2 and the lower part of the front baffle body 7 respectively;

[0060] 3) Connect the front longitudinal beam support plate 9 to the front longitudinal beam 10 and the front cabin vertical plate 2 respectively; connect the front longitudinal beam 10 to the lower part 7 of the front baffle body;

[0061] 4) Connect the front vertical plate connecting plate 3 and the A-pillar lower reinforcing plate 4 to the A-pillar lower hinge column 1, the front baffle crossbeam 6 and the front longitudinal beam support plate 9 respectively.

[0062] In step 1), the front vertical plate connecting plate 3 and the A-pillar lower reinforcing plate 4 are welded to form the A-pillar lower reinforcing plate assembly; in step 2), the front baffle crossbeam 6 is welded to the front cabin vertical plate 2 and the lower part of the front baffle body 7 respectively; in step 3), the front longitudinal beam support plate 9 and the front longitudinal beam 10 are welded to form the front longitudinal beam assembly; then the front longitudinal beam assembly is welded to the front cabin vertical plate 2 and the lower part of the front baffle body 7 respectively; in step 4), the A-pillar lower reinforcing plate assembly is connected and fixed to the A-pillar lower hinge column 1, the front longitudinal beam support plate 9, and the projection weld nuts inside the front baffle crossbeam 6.

[0063] In step 1), the front vertical plate connecting plate 3 is welded to the A-pillar lower reinforcing plate 4; in step 2), the two ends of the front baffle beam 6 are welded to the front cabin vertical plate 2 and the lower part of the front baffle body 7 respectively; in step 3), the front longitudinal beam support plate 9 is welded to the front longitudinal beam 10 and the front cabin vertical plate 2 respectively; the front longitudinal beam 10 is welded to the lower part of the front baffle body 7.

[0064] The specific workflow of this invention is as follows:

[0065] 1) Connect the front vertical plate connecting plate 3 to the A-pillar lower reinforcing plate 4;

[0066] 2) Connect the front baffle beam 6 to the front cabin vertical plate 2 and the lower part of the front baffle body 7 respectively;

[0067] 3) Connect the front longitudinal beam support plate 9 to the front longitudinal beam 10 and the front cabin vertical plate 2 respectively; connect the front longitudinal beam 10 to the lower part 7 of the front baffle body;

[0068] 4) Connect the front vertical plate connecting plate 3 and the A-pillar lower reinforcing plate 4 to the A-pillar lower hinge column 1, the front baffle crossbeam 6 and the front longitudinal beam support plate 9 respectively.

[0069] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A method for installing an A-pillar under-collision structure, characterized in that: The A-pillar under-collision structure includes an A-pillar under-hinge column (1); the A-pillar under-hinge column (1) is connected to a front cabin vertical plate (2); a front vertical plate connecting plate (3) and an A-pillar under-reinforcing plate (4) are respectively provided on the A-pillar under-hinge column (1); a cavity structure is provided between the front vertical plate connecting plate (3) and the A-pillar under-reinforcing plate (4); the cavity structure is located on one side of the front cabin vertical plate (2) and the A-pillar under-hinge column (1); The front vertical plate connecting plate (3) includes a bent section (301); the front cabin vertical plate (2) includes a first front cabin vertical plate connecting section (201); the A-pillar lower hinge column (1) includes a hinge column connecting section (101); the first front cabin vertical plate connecting section (201) is connected to the hinge column connecting section (101); the cavity structure includes a first cavity (5); the first cavity (5) is located in the bent section (301); the first front cabin vertical plate connecting section (201) and the hinge column connecting section (101) are both located in the first cavity (5); The bending section (301) has a first connecting plate connecting section (302) and a second connecting plate connecting section (303) on both sides respectively; the A-pillar lower reinforcing plate (4) includes a first reinforcing plate connecting section (401); the first reinforcing plate connecting section (401) has a second reinforcing plate connecting section (402) and a third reinforcing plate connecting section (403) on both sides respectively; the first connecting plate connecting section (302) and the second reinforcing plate connecting section (402) are connected; and a second cavity (501) is provided between the first connecting plate connecting section (302) and the first reinforcing plate connecting section (401); One side of the second connecting plate connecting section (303) is connected to the hinge column connecting section (101); the other side of the second connecting plate connecting section (303) is connected to the third reinforcing plate connecting section (403); and a third cavity (502) is provided between the second connecting plate connecting section (303) and the third reinforcing plate connecting section (403). A front baffle beam (6) is connected to the first front cabin vertical plate connecting section (201); one end of the front baffle beam (6) is connected to the first front cabin vertical plate connecting section (201); the other end of the front baffle beam (6) is connected to the lower part (7) of the front baffle body. The front vertical plate connecting plate (3) and the lower reinforcing plate (4) of the A-pillar are both connected with first connecting bolts (8); the front baffle beam (6) is provided with a first projection weld nut (801); the first connecting bolt (8) is connected in the first projection weld nut (801); The first forward cabin vertical plate connecting section (201) is connected to the second forward cabin vertical plate connecting section (202); the second forward cabin vertical plate connecting section (202) is connected to the front longitudinal beam support plate (9); one end of the front longitudinal beam support plate (9) is connected to the second forward cabin vertical plate connecting section (202); the other end of the front longitudinal beam support plate (9) is connected to the front longitudinal beam (10); the front longitudinal beam (10) is connected to the lower part (7) of the front baffle body; The front vertical plate connecting plate (3) and the A-pillar lower reinforcing plate (4) are both connected with second connecting bolts (11); the front longitudinal beam support plate (9) is provided with a second projection weld nut (111); the second connecting bolt (11) is connected in the second projection weld nut (111); The installation method includes the following steps: 1) Connect the front vertical plate connecting plate (3) to the A-pillar lower reinforcing plate (4); 2) Connect the front baffle beam (6) to the front cabin vertical plate (2) and the lower part of the front baffle body (7) respectively; 3) Connect the front longitudinal beam support plate (9) to the front longitudinal beam (10) and the front cabin vertical plate (2) respectively; connect the front longitudinal beam (10) to the lower part (7) of the front baffle body; 4) Connect the front vertical plate connecting plate (3) and the A-pillar lower reinforcing plate (4) to the A-pillar lower hinge column (1), the front baffle crossbeam (6) and the front longitudinal beam support plate (9) respectively.

2. The installation method of the A-pillar anti-collision structure according to claim 1, characterized in that: In step 1), the front vertical plate connecting plate (3) is welded to the A-pillar lower reinforcing plate (4); in step 2), the two ends of the front baffle beam (6) are welded to the front cabin vertical plate (2) and the lower part of the front baffle body (7) respectively; in step 3), the front longitudinal beam support plate (9) is welded to the front longitudinal beam (10) and the front cabin vertical plate (2) respectively; the front longitudinal beam (10) is welded to the lower part of the front baffle body (7).

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