Automobile A column lower partition plate structure
By designing the welding connection between the reinforcement plate and the threshold beam at the lower end section of the A-pillar of the car, a reinforcement rib structure is formed, which solves the problem of insufficient torsional stiffness and improves the handling performance and collision safety of the entire vehicle.
Patent Information
- Application Number
- CN202421829611.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-07-30
AI Technical Summary
In the prior art, the torsional stiffness of the lower end section of the A-pillar of the vehicle is insufficient, resulting in poor handling performance of the vehicle, and the traditional connection structure is complex and difficult to weld, affecting the welding strength and molding difficulty.
A car A-pillar lower partition structure is designed. Through the vertical arrangement and welding connection of the reinforcement plate, the connection strength between the inner plate of the A-pillar and the outer plate is enhanced, and welded to the inner plate of the threshold beam to form a reinforced rib structure to improve the overall stiffness and torsion resistance.
It significantly improves the bending and torsional strength of the lower end section of the A-pillar, enhances the safety performance of the car collision, ensures that the door can be opened normally after the collision, and provides safety guarantees for drivers and passengers.
Smart Images
Figure CN223290950U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobiles, in particular to a lower partition plate structure of an automobile A-pillar. Background Art
[0002] Vehicle handling performance refers to a vehicle's handling stability and safety. A vehicle with good handling performance provides a pleasant driving experience, maintains stability in complex road conditions, and reduces the risk of accidents. Vehicle handling performance is related to torsional stiffness, which is directly related to the body-in-white (BIW) skeleton structure, ring cross-section size, and material thickness. Torsional stiffness is typically determined through initial cross-sectional and overall structural optimization. However, optimization approaches are influenced by various factors, including styling, layout, and cost. Therefore, effectively modifying the structure to increase torsional stiffness presents a challenge.
[0003] The lower end section of the A-pillar of a traditional fuel vehicle's body-in-white skeleton usually only has a reinforcement plate. This is a sensitive area for torsional stiffness. To improve the torsional stiffness of the entire vehicle, a solution is disclosed, entitled "A Structure for Connecting an Automobile A-Pillar to a Door Sill" (Publication No. CN215706661U). The solution includes an A-pillar lower connecting plate that connects the A-pillar reinforcement plate and the outer door sill of the vehicle body. The A-pillar lower connecting plate is a frame-shaped structure with an opening on one side. The A-pillar reinforcement plate and the outer door sill are respectively provided with overlapping surfaces that match the A-pillar lower connecting plate, thereby improving the torsional stiffness of the entire vehicle. However, the A-pillar lower connecting plate described in this document is an L-shaped groove structure as a whole, which is complex in shape and difficult to form. In addition, the A-pillar lower connecting plate needs to be installed on the inner wall of the lower cavity of the A-pillar inner plate, and it is not easy to weld it to the inner wall of the lower cavity of the A-pillar. Utility Model Content
[0004] The purpose of the utility model is to provide a car A-pillar lower partition structure, which improves the torsional rigidity of the entire vehicle by improving the structural strength and rigidity of the vehicle body at the connection position between the lower end section of the A-pillar and the door sill beam.
[0005] The present invention can be realized through the following technical scheme: a lower bulkhead structure of an automobile A-pillar, the reinforcing plate surface is arranged vertically as a whole, the front vertical edge of the reinforcing plate is located between the first outer flange of the front wall plate of the lower end section of the A-pillar inner panel and the second outer flange on the front side of the lower end section of the A-pillar outer panel, and the three are welded together in a fit-fitting manner; the upper rear portion of the reinforcing plate has an arcuate edge located between the third outer flange of the rear wall plate of the lower end section of the A-pillar inner panel and the fourth outer flange of the rear wall plate of the lower end section of the A-pillar outer panel, and the three are welded together in a fit-fitting manner; the lower rear portion of the reinforcing plate has a connecting arm extending downward, the connecting arm is located below the arcuate edge, the lower plate edge of the connecting arm is located between the lower flange of the front section of the sill beam inner panel and the sill beam outer panel, and the three are welded together in a fit-fitting manner.
[0006] Compared with the prior art, the present invention has the following beneficial effects:
[0007] By welding the front vertical edge of the reinforcement plate between the first outer flange of the front wall panel of the lower end section of the A-pillar inner panel and the second outer flange on the front side of the lower end section of the A-pillar outer panel, welding the arc edge of the reinforcement plate between the third outer flange of the rear wall panel of the lower end section of the A-pillar inner panel and the fourth outer flange of the rear wall panel of the lower end section of the A-pillar outer panel, and welding the lower plate edge of the connecting arm of the reinforcement plate between the lower flange of the front section of the rocker beam inner panel and the rocker beam outer panel, the structural strength and rigidity at the connection position of the lower end section of the A-pillar and the rocker beam are improved, which can effectively improve the bending and torsional strength of the lower end section of the automobile A-pillar, significantly improve the vehicle's front side collision capability, and enhance the automobile collision safety performance; the improvement of the deformation resistance of the lower end section of the automobile A-pillar and the front section of the vehicle rocker ensures that the deformation of the vehicle door after a collision is significantly reduced, ensures the normal opening of the door after a collision, and provides a guarantee for the driver and passengers to escape. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 This is a schematic diagram of the structure where the reinforcement plate is welded to the lower end section of the A-pillar inner panel and the door sill beam;
[0009] Figure 2 This is a schematic diagram of the front structure of the reinforcement plate;
[0010] Figure 3 Schematic diagram of the back structure of the reinforcement plate; DETAILED DESCRIPTION
[0011] See also Figure 1-3 As shown, a structure for a lower A-pillar bulkhead of an automobile is shown, wherein the surface of the reinforcing plate 10 is arranged vertically as a whole, the front vertical edge 11 of the reinforcing plate 10 is located between the first outer flange 21 of the front wall panel of the lower end section of the A-pillar inner panel 20 and the second outer flange on the front side of the lower end section of the A-pillar outer panel, and the three are welded together in a fitting manner, the upper rear portion of the reinforcing plate 10 has an arcuate edge 12 located between the third outer flange 22 of the rear wall panel of the lower end section of the A-pillar inner panel 20 and the fourth outer flange of the rear wall panel of the lower end section of the A-pillar outer panel, and the three are welded together in a fitting manner, the lower rear portion of the reinforcing plate 10 has a connecting arm 13 extending downward, the connecting arm 13 is located below the arcuate edge 12, the lower plate edge of the connecting arm 13 is located between the lower flange 31 of the front section of the sill beam inner panel 30 and the sill beam outer panel, and the three are welded together in a fitting manner;
[0012] In the above scheme, for the whole vehicle, the side where the front of the vehicle is located is the front side. When the observer observes the vehicle from the side of the vehicle body, the front vertical edge 11 of the reinforcing plate 10 is located on the side close to the front of the vehicle, so as to define the front and rear relationship of this application; the curvature of the arc edge 12 coincides with the outer flange 22 of the rear wall plate of the lower end section of the A-pillar inner panel 20, so as to facilitate the connection between the two; by welding the front vertical edge 11 of the reinforcing plate 10 between the first outer flange 21 of the front wall plate of the lower end section of the A-pillar inner panel 20 and the second outer flange on the front side of the lower end section of the A-pillar outer panel, the arc edge 12 at the rear upper part of the reinforcing plate 10 is welded to the third outer flange 22 of the rear wall plate of the lower end section of the A-pillar inner panel 20. By welding the lower plate edge of the connecting arm 13 at the lower right position of the reinforcing plate 10 between the lower flange 31 of the front section of the sill beam inner plate 30 and the sill beam outer plate, the structural strength and rigidity at the connection position between the lower end section of the A-pillar and the sill beam are improved, which can effectively improve the bending and torsional strength of the lower end section of the automobile A-pillar, significantly improve the vehicle's ability to resist side collisions from the front, and enhance the automobile's collision safety performance; the improvement of the deformation resistance of the lower end section of the automobile A-pillar and the front section of the vehicle sill ensures that the deformation of the vehicle door after a collision is significantly reduced, ensures the normal opening of the vehicle door after a collision, and provides a guarantee for the driver and passengers to escape.
[0013] The connecting arm 13 is located at the lower rear position of the arc-shaped edge 12; Figure 1 、 2 The connecting arm 13 is arranged to extend from top to bottom and from front to back as a whole, that is, the connecting arm 13 is a two-force rod that bears pressure as a whole, and the supporting force it provides is reliable and stable.
[0014] The reinforcing plate 10 includes a reinforcing groove punched on the plate surface, which includes an upper transverse groove 14 between the upper end of the front vertical side 11 of the reinforcing plate 10 and the upper end of the curved side 12, a middle oblique groove 15 between the lower end of the front vertical side 11 and the middle section of the curved side 12, and a rear lower groove 16 extending from the rear end of the curved side 12 to the connecting arm 13 and along the connecting arm 13; an arcuate groove 17 is provided at the curved side 12, and the upper end, middle part and lower end of the arcuate groove 17 are respectively connected to the rear end of the upper transverse groove 14, the upper end of the middle oblique groove 15 and the upper end of the rear lower groove 16;
[0015] The upper transverse groove 14, the middle oblique groove 15, the rear lower groove 16 and the arc groove 17 are recessed toward the interior of the vehicle body as a whole, which is equivalent to forming four reinforcing ribs. Since the A-pillar inner plate 20 is a groove-shaped structure with its opening facing outward from the vehicle body, it is convenient to accommodate the upper transverse groove 14, the middle oblique groove 15, the rear lower groove 16 and the arc groove 17, thereby realizing rational use of space. The reinforcing ribs formed by the upper transverse groove 14, the middle oblique groove 15, the rear lower groove 16 and the arc groove 17 can effectively transmit force, while ensuring that the overall structure of the reinforcing plate 10 is not complicated, it also ensures the overall structural strength and rigidity of the reinforcing plate 10, which can effectively improve the torsional rigidity of the automobile.
[0016] The notch of the reinforcement groove points to the outside of the vehicle body; such an arrangement facilitates the arrangement of the upper transverse groove 14, the middle oblique groove 15, the rear lower groove 16 and the arc groove 17 in the cavity area on the A-pillar inner panel 20 with a larger space.
[0017] There is a plate missing area 18 between the middle oblique groove 15 and the connecting arm 13, and a process hole 19 is set on the plate body of the reinforcing plate 10; the setting of the plate missing area 18 reduces the material used for the plate at the lower position of the reinforcing plate 10, which has the effect of reducing weight. At the same time, even if the plate body is retained in the missing area 18, the plate body at this position has a very limited effect of offsetting the collision force of the A-pillar tilting backward. In this way, the supporting strength of the A-pillar tilting backward is not weakened while the welding part is reduced; at the same time, due to the setting of the connecting arm 13, it is ensured that the rear lower part of the reinforcing plate 10 can be connected to the inner plate 30 of the door sill beam, and the effect of the reinforcing ribs formed by the upper transverse groove 14, the middle oblique groove 15, the rear lower groove 16 and the arc groove 17 ensure the structural strength and rigidity of the lower position of the reinforcing plate 10; the process hole 19 includes an electrophoresis hole and a weight-reducing hole. The weight-reducing hole meets the requirements of the strong quantitative design, and the electrophoresis hole meets the electrophoresis requirements.
[0018] The edge contour of the arc-shaped edge 12 is a tooth plate 121 arranged at intervals, and the area between the two tooth plates 121 is a tooth valley 122; the two tooth plates 121 are respectively welded to the outer flange 22 of the rear wall plate of the lower end section of the A-pillar inner panel 20 and the outer flange of the rear wall plate of the lower end section of the A-pillar outer panel. Since the two tooth plates 121 are respectively located on both sides of the corner of the lower end section of the A-pillar, while ensuring the reliability of the connection, the use of sheet material is also reduced, which has the effect of reducing weight.
Claims
1. A lower partition structure of an automobile A-pillar, characterized by: The reinforcing plate (10) is arranged in a vertical manner as a whole. The front vertical edge (11) of the reinforcing plate (10) is located between the first outer flange (21) of the front wall plate of the lower end section of the A-pillar inner plate (20) and the second outer flange on the front side of the lower end section of the A-pillar outer plate, and the three are welded together in a fitting manner. The upper rear portion of the reinforcing plate (10) has an arcuate edge (12) located between the third outer flange (22) of the rear wall plate of the lower end section of the A-pillar inner plate (20) and the fourth outer flange of the rear wall plate of the lower end section of the A-pillar outer plate, and the three are welded together in a fitting manner. The lower rear portion of the reinforcing plate (10) has a connecting arm (13) extending downward, the connecting arm (13) is located below the arcuate edge (12), and the lower plate edge of the connecting arm (13) is located between the lower flange (31) of the front section of the sill beam inner plate (30) and the sill beam outer plate, and the three are welded together in a fitting manner.
2. The automobile A-pillar lower partition structure according to claim 1, characterized in that: The connecting arm (13) is located below and slightly behind the arc-shaped edge (12).
3. The automobile A-pillar lower partition structure according to claim 1, characterized in that: The reinforcing plate (10) includes a reinforcing groove punched on the plate surface, the reinforcing groove including an upper transverse groove (14) between the upper end of the front vertical edge (11) and the upper end of the arcuate edge (12) of the reinforcing plate (10), a middle oblique groove (15) between the lower end of the front vertical edge (11) and the middle section of the arcuate edge (12), and a rear lower groove (16) extending from the rear end of the arcuate edge (12) to the connecting arm (13) and along the connecting arm (13).
4. The automobile A-pillar lower partition structure according to claim 3, characterized in that: An arcuate groove (17) is provided at the arcuate edge (12), and the upper end, middle portion and lower end of the arcuate groove (17) are connected to the rear end of the upper transverse groove (14), the upper end of the middle oblique groove (15) and the upper end of the rear lower groove (16) respectively.
5. The automobile A-pillar lower partition structure according to claim 3 or 4, characterized in that: The notch of the reinforcement groove points to the outside of the vehicle body.
6. The automobile A-pillar lower partition structure according to claim 3, characterized in that: A plate missing area (18) is located between the middle inclined groove (15) and the connecting arm (13), and a process hole (19) is provided on the plate body of the reinforcing plate (10).
7. The automobile A-pillar lower partition structure according to claim 1 or 2, characterized in that: The edge profile of the arc-shaped edge (12) is tooth pieces (121) arranged at intervals, and the area between the two tooth pieces (121) is a tooth valley (122).