A-pillar intrusion resistant structure

Abstract

The utility model discloses a kind of structure of A column reinforced anti-invasion performance, which belongs to the field of automobile manufacturing. It mainly includes front window crossbeam inner plate assembly, front window crossbeam outer plate assembly, front cabin side sealing plate inner plate assembly, front cabin side sealing plate outer plate assembly, side wall assembly and A column inner plate assembly, side wall assembly includes A column side wall, A column side wall one side is provided with multiple fixed holes that pass through, the other side is fixedly connected with mounting bracket, mounting bracket one side A column side wall is fixedly connected with outer plate, mounting bracket one end is fixedly connected with A column inner plate assembly, A column inner plate assembly includes A column inner plate fixedly connected with mounting bracket, A column inner plate one side is fixedly connected with A column side wall, the utility model uses the structure design of front window crossbeam inner and outer plate manufactured by laser welding process and unequal material thickness scheme, and the specific parameter and method of this manufacturing process. This design and process can improve the strength and rigidity of A column, while achieving lightweight.

Description

Technical Field

[0001] This utility model belongs to the field of automobile manufacturing, and more specifically, it relates to a structure for enhancing the intrusion resistance of the A-pillar. Background Technology

[0002] With the increasing number of cars on the road, vehicle safety has become a focal point for both consumers and manufacturers. In collisions, the A-pillar, as a critical structural component of the vehicle body, directly affects the survival space and safety of occupants. In recent years, vehicle safety standards have been continuously improving, and A-pillar deformation is one of the significant factors contributing to a lower occupant safety index.

[0003] In side-impact collisions, the A-pillar, as a crucial protective structure, plays a vital role in terms of strength and energy absorption. However, existing A-pillar structures still suffer from several drawbacks in side-impact collisions, such as limited load transfer paths, excessive intrusion, insufficient structural strength, limitations in materials and manufacturing processes, and the difficulty in balancing cost and performance.

[0004] To address the aforementioned technical problems, this application proposes a solution. Utility Model Content

[0005] The technical problem this invention aims to solve is to overcome the shortcomings of existing technologies and provide a structure for enhancing the intrusion resistance of the A-pillar. This structure utilizes laser welding and a unequal material thickness scheme to manufacture the inner and outer panels of the windshield crossbeam, along with the specific parameters and methods of this manufacturing process. This design and process can improve the strength and stiffness of the A-pillar while achieving lightweighting.

[0006] The aforementioned structure for enhancing the intrusion resistance of the A-pillar includes an inner panel assembly of the front windshield crossbeam, an outer panel assembly of the front windshield crossbeam, an inner panel assembly of the front cabin side sealing panel, an outer panel assembly of the front cabin side sealing panel, a side panel assembly, and an inner panel assembly of the A-pillar. The side panel assembly includes an A-pillar side panel, one side of which has multiple through fixing holes, and the other side is fixedly connected to a mounting bracket. An outer panel is fixedly connected to one side of the A-pillar side panel of the mounting bracket. One end of the mounting bracket is fixedly connected to the inner panel assembly of the A-pillar. The inner panel assembly of the A-pillar includes an inner panel of the A-pillar fixedly connected to the mounting bracket. One side of the inner panel of the A-pillar is fixedly connected to the A-pillar side panel, and the other side of the inner panel of the A-pillar is fixedly connected from top to bottom to a mounting clip one, a fixing plate, and a mounting clip two. A side skirt is fixedly connected to one side of the inner panel of the A-pillar, and the side skirt is fixedly connected to the outer panel. The front cabin side sealing panel assembly is fixedly connected to one side of the side skirt.

[0007] Preferably, the front cabin side panel inner panel assembly includes an inner panel, which is fixedly connected to the side skirt. A first collapse box is fixedly connected to one side of the inner panel. The upper part of the first collapse box is provided with a corner rib plate fixedly connected to the inner panel. An inner hole is opened on one side of the inner panel of the first collapse box. A reinforcing rib plate is fixedly connected inside the inner hole. The reinforcing rib plate passes through both sides of the inner hole. The front cabin side panel outer panel assembly is fixedly connected to one side of the inner panel of the first collapse box.

[0008] Preferably, the front cabin side panel assembly includes an outer panel, which is fixedly connected to an inner panel and a collapse box. An inner collapse box and an outer collapse box are fixedly connected to the outer panel, and the inner collapse box and the outer collapse box overlap. A plurality of openings are provided on one side of the outer panel, and the plurality of openings coincide with and are fixedly connected to a plurality of fixing holes.

[0009] Preferably, the front windshield crossbeam inner panel assembly includes an inner crossbeam, one end of which has an inner through hole, one side of which is fixedly connected to a plurality of buckles with buckle holes, and the other side of which is fixedly connected to a plurality of inner stiffening plates with a plurality of inner stiffening plate holes.

[0010] Preferably, the front windshield crossbeam outer panel assembly includes an outer crossbeam with multiple external through holes. Multiple external stiffening plates are fixedly connected to one side of the outer crossbeam, and a connecting rib is fixedly connected to the other side. One end of the outer crossbeam with the connecting rib is fixedly connected to an external stiffening plate and an external buckle in the length direction, and the other end is fixedly connected to an external stiffening plate.

[0011] Preferably, the outer crossbeam is fixedly connected to one side of the inner stiffening plate, the outer stiffening plate is fixedly connected to the reinforcing plate, and both ends of the outer and inner crossbeams along their length are fixedly connected to the inner sealing plate.

[0012] Preferably, the front windshield beam inner panel assembly, the front windshield beam outer panel assembly, the front cabin side panel inner panel assembly, the front cabin side panel outer panel assembly, the side panel assembly, and the A-pillar inner panel assembly are provided with multiple openings for weight reduction. The fixing of the front windshield beam inner panel assembly, the front windshield beam outer panel assembly, the front cabin side panel inner panel assembly, the front cabin side panel outer panel assembly, the side panel assembly, and the A-pillar inner panel assembly adopts a laser welding process with unequal material thickness.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model adopts an unequal material thickness design, precisely connecting plates of different thicknesses through laser welding: thick plates (1.8-2.5mm ultra-high strength steel) are used in high-stress areas such as the A-pillar connection to improve local load-bearing capacity. Thin plates (0.8-1.2mm high-strength steel) are used in low-stress areas such as the middle of the windshield crossbeam to reduce material redundancy. The result: achieving lightweighting (3%-5% weight reduction) while ensuring overall strength.

[0015] 2. This utility model optimizes thickness distribution based on dynamic collision simulation data (such as a 25% offset side impact condition) and combines it with structural reinforcement design: Longitudinal stiffener layout: Multiple stiffeners (3-5mm high, 40-60mm spacing) are stamped on the inner side of the inner plate to synergistically improve bending stiffness. Dynamic load adaptation: The proportion of thick and thin areas and the transition slope are adjusted according to the collision energy transfer path to optimize energy absorption efficiency. The bending strength of the A-pillar is increased by 20%-25%, the collision energy absorption efficiency is increased by 15%-20%, and the intrusion is reduced by 12%.

[0016] 3. This utility model describes the structural design of the inner and outer panels of the front windshield crossbeam, manufactured using laser welding technology and an unequal material thickness scheme, as well as the specific parameters and methods of this manufacturing process. This design and process can improve the strength and rigidity of the A-pillar while achieving lightweighting. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is an exploded view of the overall structure of this utility model;

[0019] Figure 3 This is a structural schematic diagram of the windshield crossbeam inner panel assembly.

[0020] Figure 4 Another structural schematic diagram of the windshield crossbeam inner panel assembly;

[0021] Figure 5 This is a structural schematic diagram of the front windshield crossbeam outer panel assembly.

[0022] Figure 6 Another structural schematic diagram of the front windshield crossbeam outer panel assembly;

[0023] Figure 7 This is a structural schematic diagram of the inner panel assembly of the front cabin side sealing plate;

[0024] Figure 8 Another structural schematic diagram of the inner panel assembly of the front cabin side sealing plate;

[0025] Figure 9 This is a structural schematic diagram of the front cabin side panel outer plate assembly;

[0026] Figure 10 Another structural schematic diagram of the front cabin side panel outer plate assembly;

[0027] Figure 11 This is a structural schematic diagram of the side panel assembly;

[0028] Figure 12 This is a schematic diagram of the side panel assembly from another perspective.

[0029] Figure 13 This is a structural schematic diagram of the A-pillar inner panel assembly.

[0030] In the diagram, 1. Front windshield transverse beam inner panel assembly; 101. Inner transverse beam; 102. Inner through hole; 103. Clip; 104. Clip hole; 105. Inner stiffening plate; 1051. Inner stiffening plate hole; 2. Front windshield transverse beam outer panel assembly; 201. Outer transverse beam; 202. Outer through hole; 203. Outer stiffening plate; 205. Connecting rib; 206. Outer stiffening plate; 207. Outer clip; 3. Front cabin side panel inner panel assembly; 301. Inner side panel; 302. Collapse box one; 303. Corner stiffening plate 304. Inner hole; 305. Rib plate; 4. Front cabin side panel outer panel assembly; 401. Outer panel; 4011. Opening one; 402. Inner crumple box; 403. Outer crumple box; 5. Side panel assembly; 501. A-pillar side panel; 502. Fixing hole; 503. Mounting bracket; 504. Outer panel; 6. A-pillar inner panel assembly; 601. A-pillar inner panel; 602. Fixing clip; 603. Mounting clip one; 604. Mounting clip two; 605. Side skirt. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings:

[0032] The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] like Figures 1 to 13 As shown, a structure for enhancing the intrusion resistance of the A-pillar is presented. This design improves the vehicle's impact resistance, enhances its strength and stability under various collision conditions, ensures occupant space, and improves the overall safety of the vehicle. It includes the following components: front windshield crossbeam inner panel assembly 1, front windshield crossbeam outer panel assembly 2, front compartment side panel inner panel assembly 3, front compartment side panel outer panel assembly 4, side panel assembly 5, and A-pillar inner panel assembly 6. Figure 11 and Figure 12As shown, the side panel assembly 5 includes an A-pillar side panel 501. Multiple through-holes 502 are provided on one side of the A-pillar side panel 501 for assembly and positioning. A mounting bracket 503 is fixedly connected to the other side. The mounting bracket 503 supports the A-pillar inner panel assembly 6, allowing for collapse and energy absorption, absorbing most of the energy, reducing intrusion into the passenger compartment, and ensuring space. An outer panel 504 is fixedly connected to one side of the A-pillar sidewall 501 of the mounting bracket 503. An A-pillar inner panel assembly 6 is fixedly connected to one end of the mounting bracket 503. The A-pillar inner panel assembly 6 includes an A-pillar inner panel 601 fixedly connected to the mounting bracket 503. One side of the A-pillar inner panel 601 is fixedly connected to the A-pillar sidewall 501. On the other side of the A-pillar inner panel 601, from top to bottom, mounting clip 1 603, fixing clip 602, and mounting clip 2 604 are fixedly connected in sequence. A side skirt 605 is fixedly connected to one side of the A-pillar inner panel 601. The side skirt 605 is fixedly connected to the outer panel 504. A front cabin side sealing panel inner panel assembly 3 is fixedly connected to one side of the side skirt 605. The side skirt 605 has fixed components on both sides, which makes it stronger and more impact-resistant.

[0034] like Figure 7 and Figure 8 As shown, the front compartment side panel inner panel assembly 3 includes an inner panel 301, which is fixedly connected to the side skirt 605. A crumple box 302 is fixedly connected to one side of the inner panel 301. The crumple box 302 resists lateral impacts, especially showing good performance in offset collisions, increasing bending strength by 20%-25% and collision energy absorption efficiency by 15%-20%. The upper part of the crumple box 302 is provided with a corner rib plate 303 fixedly connected to the inner panel 301. An inner hole 304 is opened on one side of the inner panel 301 of the crumple box 302. A reinforcing rib plate 305 is fixedly connected inside the inner hole 304, and the reinforcing rib plate 305 passes through both sides of the inner hole 304. The front compartment side panel outer panel assembly 4 is fixedly connected to the inner panel 301 on one side of the crumple box 302.

[0035] like Figure 9 and Figure 10 As shown, the front compartment side panel assembly 4 includes an outer panel 401, which is fixedly connected to an inner panel 301 and a crumple zone 302. An inner crumple zone 402 and an outer crumple zone 403 are fixedly connected to the outer panel 401. The inner and outer crumple zones 402 overlap. The advantage of this overlapping design is that when subjected to external impact, i.e., lateral impact, the inner and outer crumple zones 402 can work together to resist the external impact many times over, absorbing most of the kinetic energy and reducing intrusion. Multiple openings 4011 are provided on one side of the outer panel 401, and these openings 4011 are overlapped and fixedly connected to multiple fixing holes 502, and the two are fixed together by laser welding.

[0036] like Figure 3and Figure 4 As shown, the front windshield crossbeam inner panel assembly 1 includes an inner crossbeam 101. One end of the inner crossbeam 101 has an inner through hole 102. One side of the inner crossbeam 101 is fixedly connected to a plurality of clips 103, and the clips 103 have clip holes 104. The other side of the inner crossbeam 101 is fixedly connected to a plurality of inner stiffening plates 105, and the inner stiffening plates 105 have a plurality of inner stiffening plate holes 1051.

[0037] like Figure 5 and Figure 6 As shown, the front windshield crossbeam outer panel assembly 2 includes an outer crossbeam 201. Multiple external through holes 202 are provided on the outer crossbeam 201. Multiple external stiffening plates 203 are fixedly connected to one side of the outer crossbeam 201, increasing its longitudinal rigidity. A connecting rib 205 is fixedly connected to the other side. One end of the outer crossbeam 201 with the connecting rib 205 is fixedly connected to an external stiffening plate 206 and an external clip 207 along its length, while the other end is fixedly connected to the external stiffening plate 206. The outer crossbeam 201 is fixedly connected to one side of the inner stiffening plate 105, and the outer stiffening plate 206 is fixedly connected to the reinforcing rib 305. Both ends of the outer crossbeam 201 and the inner crossbeam 101 along their length are fixedly connected to the inner sealing plate 301. The inner panel assembly 1 and the outer panel assembly 2 of the front windshield crossbeam are fixedly connected together, and then laser-welded to the inner panels 6 of the A-pillars on both sides of the vehicle. Because they are hollow internally, they are supported by inner stiffening plates 105. In the event of a frontal collision, the inner panel assembly 1 and the outer panel assembly 2 of the front windshield crossbeam will first be compressed together to absorb kinetic energy, while excess kinetic energy is transferred to the inner panels 6 of the A-pillars on both sides of the vehicle. This minimizes kinetic energy and reduces injury to occupants.

[0038] The front windshield crossbeam inner panel assembly 1, front windshield crossbeam outer panel assembly 2, front compartment side panel inner panel assembly 3, front compartment side panel outer panel assembly 4, side panel assembly 5, and A-pillar inner panel assembly 6 have multiple openings for weight reduction. These additional openings reduce the overall weight of the vehicle without compromising its overall rigidity, thus achieving energy savings. The fixing of the front windshield crossbeam inner panel assembly 1, front windshield crossbeam outer panel assembly 2, front compartment side panel inner panel assembly 3, front compartment side panel outer panel assembly 4, side panel assembly 5, and A-pillar inner panel assembly 6 utilizes a laser-welded unequal thickness process. Sealant is used to fill gaps (a common industry practice) to address the uneven thickness gaps, improving the vehicle's overall impact resistance.

[0039] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A structure for enhancing the intrusion resistance of an A-pillar, comprising a front windshield transverse beam inner panel assembly (1), a front windshield transverse beam outer panel assembly (2), a front cabin side panel inner panel assembly (3), a front cabin side panel outer panel assembly (4), a side wall assembly (5), and an A-pillar inner panel assembly (6), characterized in that: The side panel assembly (5) includes an A-pillar side panel (501). One side of the A-pillar side panel (501) has multiple through-hole fixing holes (502), and the other side is fixedly connected to a mounting bracket (503). An outer plate (504) is fixedly connected to one side of the A-pillar side panel (501) of the mounting bracket (503). One end of the mounting bracket (503) is fixedly connected to an A-pillar inner panel assembly (6). The A-pillar inner panel assembly (6) includes an A-pillar inner panel (604) fixedly connected to the mounting bracket (503). 1) One side of the inner panel (601) of the A-pillar is fixedly connected to the side wall (501) of the A-pillar. The other side of the inner panel (601) of the A-pillar is fixedly connected from top to bottom with mounting buckle one (603), fixing plate (602) and mounting buckle two (604). One side of the inner panel (601) of the A-pillar is fixedly connected to the side skirt (605). The side skirt (605) is fixedly connected to the outer panel (504). The side skirt (605) is fixedly connected to the front cabin side sealing plate inner panel assembly (3) on one side of the side skirt (605).

2. The structure for enhancing the anti-intrusion performance of an A-pillar according to claim 1, characterized in that: The front cabin side panel inner panel assembly (3) includes an inner panel (301), which is fixedly connected to the side skirt (605). A first collapse box (302) is fixedly connected to one side of the inner panel (301). A corner rib plate (303) fixedly connected to the upper part of the first collapse box (302) is provided with the inner panel (301). An inner hole (304) is opened on the inner panel (301) on one side of the first collapse box (302). A reinforcing rib plate (305) is fixedly connected inside the inner hole (304). The reinforcing rib plate (305) passes through both sides of the inner hole (304). The front cabin side panel outer panel assembly (4) is fixedly connected to the inner panel (301) on one side of the first collapse box (302).

3. The structure for enhancing the anti-intrusion performance of an A-pillar according to claim 2, characterized in that: The front cabin side panel assembly (4) includes an outer panel (401), which is fixedly connected to the inner panel (301) and the first collapse box (302). An inner collapse box (402) and an outer collapse box (403) are fixedly connected to the outer panel (401). The inner collapse box (402) and the outer collapse box (403) overlap. A plurality of openings (4011) are provided on one side of the outer panel (401), and the plurality of openings (4011) are overlapped and fixedly connected to the plurality of fixing holes (502).

4. The structure for enhancing the anti-intrusion performance of an A-pillar according to claim 1, characterized in that: The front windshield crossbeam inner panel assembly (1) includes an inner crossbeam (101), one end of which has an inner through hole (102). One side of the inner crossbeam (101) is fixedly connected to a plurality of buckles (103), and the buckles (103) have buckle holes (104). The other side of the inner crossbeam (101) is fixedly connected to a plurality of inner stiffening plates (105), and the inner stiffening plates (105) have a plurality of inner stiffening plate holes (1051).

5. The structure for enhancing the anti-intrusion performance of an A-pillar according to claim 1, characterized in that: The front windshield crossbeam outer panel assembly (2) includes an outer crossbeam (201), which has multiple external through holes (202). One side of the outer crossbeam (201) is fixedly connected to multiple outer stiffening plates (203), and the other side is fixedly connected to a connecting rib (205). The outer crossbeam (201) is fixedly connected to the connecting rib (205), and one end of the outer crossbeam (201) along the length direction is fixedly connected to an outer stiffening plate (206) and an outer buckle (207), and the other end is fixedly connected to an outer stiffening plate (206).

6. The structure for enhancing the anti-intrusion performance of an A-pillar according to claim 5, characterized in that: The outer crossbeam (201) is fixedly connected to one side of the inner stiffening plate (105), the outer stiffening plate (206) is fixedly connected to the reinforcing plate (305), and the two ends of the outer crossbeam (201) and the inner crossbeam (101) in the length direction are fixedly connected to the inner sealing plate (301).

7. The structure for enhancing the anti-intrusion performance of an A-pillar according to claim 1, characterized in that: The front windshield beam inner panel assembly (1), the front windshield beam outer panel assembly (2), the front cabin side panel inner panel assembly (3), the front cabin side panel outer panel assembly (4), the side panel assembly (5), and the A-pillar inner panel assembly (6) are provided with multiple openings for weight reduction. The fixing between the front windshield beam inner panel assembly (1), the front windshield beam outer panel assembly (2), the front cabin side panel inner panel assembly (3), the front cabin side panel outer panel assembly (4), the side panel assembly (5), and the A-pillar inner panel assembly (6) adopts laser welding unequal material thickness process.

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