Double-door-ring structure and vehicle

Abstract

The embodiment of the utility model provides a double-door-ring structure and a vehicle, the double-door-ring structure comprises a first sub tailor-welded blank, a second sub tailor-welded blank and a third sub tailor-welded blank which are connected with one another, the first sub tailor-welded blank comprises a column A and a front doorsill beam which are connected with one another, and the second sub tailor-welded blank comprises a middle doorsill beam; the third sub tailor-welded blank comprises a column B, a column C and a rear doorsill beam which are connected with one another; a first tailor-welding seam is arranged between the column A and the column B, a third tailor-welding seam is arranged between the front doorsill beam and the middle doorsill beam, a fourth tailor-welding seam is arranged between the middle doorsill beam and the column B, and a fifth tailor-welding seam is arranged between the middle doorsill beam and the rear doorsill beam; the first tailor-welding seam and the third tailor-welding seam are located on the same straight line, and the fourth tailor-welding seam and the fifth tailor-welding seam are located on the same straight line. The motion trail during laser welding can be optimized, so that the material utilization rate and the production efficiency can be improved, and the welding cost is reduced.

Description

Technical Field

[0001] Embodiments of the present application relate to the technical field of vehicle bodies, and in particular to a double door ring structure and a vehicle. Background Art

[0002] As the demand for automobile safety performance, energy conservation and environmental protection increases, the strength and lightweight goals of vehicle body structures are also constantly improving. As an important part of the body structure, the double door ring structure of the side wall plays a role in resisting deformation and absorbing and transmitting impact loads under vehicle collision conditions. Its structure is particularly important for the safety performance of the vehicle.

[0003] In the related art, the double door ring structure is assembled and welded in blocks, but the position of the weld is unreasonable (for example, the weld is not in a straight line), resulting in low material utilization and high welding cost. Utility Model Content

[0004] In order to solve the above technical problems, an embodiment of the present application provides a double door ring structure and a vehicle.

[0005] In a first aspect of the present application, a double door ring structure is provided, comprising:

[0006] A first sub-welded plate, a second sub-welded plate and a third sub-welded plate connected to each other, wherein the first sub-welded plate includes an A-pillar and a front sill beam connected to each other, the second sub-welded plate includes a middle sill beam, and the third sub-welded plate includes a B-pillar, a C-pillar and a rear sill beam connected to each other;

[0007] There is a first tailored weld between the A-pillar and the B-pillar, a third tailored weld between the front sill beam and the middle sill beam, a fourth tailored weld between the middle sill beam and the B-pillar, and a fifth tailored weld between the middle sill beam and the rear sill beam;

[0008] The first tailored weld seam and the third tailored weld seam are located on the same straight line, and the fourth tailored weld seam and the fifth tailored weld seam are located on the same straight line.

[0009] In a possible implementation, a second tailored weld is provided between the A-pillar and the front sill beam, a sixth tailored weld is provided between the rear sill beam and the C-pillar, and a seventh tailored weld is provided between the C-pillar and the B-pillar.

[0010] In a possible implementation, a lower patch plate and a front patch plate are provided on the front sill beam, and a B-pillar patch plate is provided on the B-pillar.

[0011] In a possible implementation, the A-pillar, the lower patch plate, the front patch plate and the B-pillar patch plate are all made of high-toughness thin aluminum-silicon hot-formed steel plates with a strength level of 1800 MPa.

[0012] In a possible implementation, the B-pillar, the C-pillar, the front sill beam, the middle sill beam and the rear sill beam are all made of high-toughness thin aluminum-silicon hot-formed steel plates with a strength level of 1500 MPa.

[0013] In a second aspect of the present application, a vehicle is provided, comprising a double door ring structure as described in any one of the first aspects.

[0014] In the double door ring structure and vehicle provided in the embodiments of the present application, by arranging the first tailored weld between the A-pillar and the B-pillar and the third tailored weld between the front sill beam and the middle sill beam in a straight line, and arranging the fourth tailored weld between the middle sill beam and the B-pillar and the fifth tailored weld between the middle sill beam and the rear sill beam in a straight line, the motion trajectory during laser welding can be optimized, thereby improving material utilization and production efficiency and reducing welding costs.

[0015] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present application, nor are they intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other features, advantages and aspects of the embodiments of the present application will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0017] Figure 1 A schematic diagram of welding a double door ring structure according to an embodiment of the present application is shown;

[0018] Figure 2 A schematic diagram of the distribution of laser welded material sheets and weld seams of a double door ring structure according to an embodiment of the present application is shown;

[0019] Figure 3 A schematic diagram of a double door ring blank according to an embodiment of the present application is shown;

[0020] Figure 4 A schematic diagram of a thermoformed double door ring structure according to an embodiment of the present application is shown.

[0021] in,

[0022] 1. A-pillar; 2. front sill beam; 3. middle sill beam; 4. rear sill beam; 5. C-pillar; 6. B-pillar; 7. lower patch plate; 8. front patch plate; 9. B-pillar patch plate; 11. first tailored weld; 12. second tailored weld; 13. third tailored weld; 14. fourth tailored weld; 15. fifth tailored weld; 16. sixth tailored weld; 17. seventh tailored weld; 21. first sub-welded plate; 22. second sub-welded plate; 23. third sub-welded plate. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0024] See also Figure 1 and Figure 2 The double door ring structure includes a first tailor-made welded plate 21, a second tailor-made welded plate 22 and a third tailor-made welded plate 23 which are connected to each other.

[0025] The first sub-welded plate 21 includes an A-pillar 1 and a front sill beam 2 connected to each other, the second sub-welded plate 22 includes a middle sill beam 3, and the third sub-welded plate 23 includes a B-pillar 6, a C-pillar 5 and a rear sill beam 4 connected to each other.

[0026] By way of example, the front door ring may be formed by the A-pillar 1 , the B-pillar 6 and the front sill beam 2 .

[0027] For example, the front door ring may be formed by the A-pillar 1 , the B-pillar 6 , the front sill beam 2 and part of the middle sill beam 3 .

[0028] For example, the rear door ring may be formed by the B-pillar 6 , the C-pillar 5 , the center rocker beam 3 and the rear rocker beam 4 .

[0029] For example, the rear door ring may be formed by the B-pillar 6 , the C-pillar 5 , the center rocker beam 3 and part of the rear rocker beam 4 .

[0030] In the embodiment of the present application, there is a first weld 11 between the A-pillar 1 and the B-pillar 6, a third weld 13 between the front sill beam 2 and the middle sill beam 3, a fourth weld 14 between the middle sill beam 3 and the B-pillar 6, and a fifth weld 15 between the middle sill beam 3 and the rear sill beam 4.

[0031] The first tailored weld 11 and the third tailored weld 13 are located on the same straight line, and the fourth tailored weld 14 and the fifth tailored weld 15 are located on the same straight line. For example, the first tailored weld 11 and the third tailored weld 13 are on a vertical straight line, and the fourth tailored weld 14 and the fifth tailored weld 15 are on a horizontal straight line.

[0032] According to the embodiment of the present application, by arranging the first tailored weld 11 between the A-pillar 1 and the B-pillar 6 and the third tailored weld 13 between the front sill beam 2 and the middle sill beam 3 in a straight line, and arranging the fourth tailored weld 14 between the middle sill beam 3 and the B-pillar 6 and the fifth tailored weld 15 between the middle sill beam 3 and the rear sill beam 4 in a straight line, the material utilization rate can be improved, and the motion trajectory during laser welding can be optimized, the production efficiency can be improved, and the welding cost can be reduced. In addition, the weight of the double door ring structure can be reduced by reducing the spot welding overlap.

[0033] Furthermore, a second tailored weld 12 is provided between the A-pillar 1 and the front sill beam 2 , a sixth tailored weld 16 is provided between the rear sill beam 4 and the C-pillar 5 , and a seventh tailored weld 17 is provided between the C-pillar 5 and the B-pillar 6 .

[0034] In the embodiment of the present application, the A-pillar 1 and the front sill beam 2 are welded to form a first sub-welded plate 21, and the B-pillar 6, the C-pillar 5 and the rear sill beam 4 are welded to form a third sub-welded plate 23. By welding the first sub-welded plate 21, the second sub-welded plate 22 and the third sub-welded plate to form a double door ring structure, the processing efficiency can be improved.

[0035] In some embodiments, see Figure 3 A lower patch plate 7 and a front patch plate 8 are provided on the front sill beam 2, and a B-pillar patch plate 9 is provided on the B-pillar 6. The lower patch plate 7 and the front patch plate 8 can increase the strength of the front sill beam 2, and the B-pillar patch plate 9 can enhance the strength of the B-pillar 6.

[0036] Furthermore, the A-pillar 1, the lower patch plate 7, the front patch plate 8 and the B-pillar patch plate 9 are all made of 1800MPa high-toughness thin aluminum-silicon hot-formed steel plates. The B-pillar 6, the C-pillar 5, the front sill beam 2, the middle sill beam 3 and the rear sill beam 4 are all made of 1500MPa high-toughness thin aluminum-silicon hot-formed steel plates.

[0037] In the embodiment of the present application, based on the characteristics of thin aluminum silicon plating, a laser wire welding process without stripping the coating can be realized, reducing a laser ablation stripping coating process, thereby reducing process costs.

[0038] In the embodiment of the present application, the first sub-welded plate 21, the second sub-welded plate 22 and the third sub-welded plate 23 form a combined welded plate, and the lower patch plate 7, the front patch plate 9 and the B-pillar patch plate 9 are connected to the combined welded plate by electric welding to form a double door ring blank, and the double door ring blank is formed into an integrated hot-formed double door ring structure (such as Figure 4 As shown), the overall weight of the double door ring structure can be reduced.

[0039] An embodiment of the present application also provides a vehicle, which includes the above-mentioned double door ring structure.

[0040] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of application involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the aforementioned application concept. For example, the above features are replaced with (but not limited to) technical features with similar functions applied in the present application.

Claims

1. A double door knocker structure, characterized in that: include: A first sub-welded plate, a second sub-welded plate and a third sub-welded plate connected to each other, wherein the first sub-welded plate includes an A-pillar and a front sill beam connected to each other, the second sub-welded plate includes a middle sill beam, and the third sub-welded plate includes a B-pillar, a C-pillar and a rear sill beam connected to each other; There is a first tailored weld between the A-pillar and the B-pillar, a third tailored weld between the front sill beam and the middle sill beam, a fourth tailored weld between the middle sill beam and the B-pillar, and a fifth tailored weld between the middle sill beam and the rear sill beam; The first tailored weld seam and the third tailored weld seam are located on the same straight line, and the fourth tailored weld seam and the fifth tailored weld seam are located on the same straight line.

2. The double door knocker structure according to claim 1, characterized in that: A second tailored weld is provided between the A-pillar and the front rocker beam, a sixth tailored weld is provided between the rear rocker beam and the C-pillar, and a seventh tailored weld is provided between the C-pillar and the B-pillar.

3. The double door knocker structure according to claim 1, characterized in that: A lower patch plate and a front patch plate are arranged on the front door sill beam, and a B-pillar patch plate is arranged on the B-pillar.

4. The double door knocker structure according to claim 3, characterized in that: The A-pillar, the lower patch plate, the front patch plate and the B-pillar patch plate are all made of high-toughness thin aluminum-silicon hot-formed steel plates with a strength level of 1800MPa.

5. The double door knocker structure according to claim 1, characterized in that: The B-pillar, the C-pillar, the front sill beam, the middle sill beam and the rear sill beam are all made of high-toughness thin aluminum-silicon hot-formed steel plates with a strength level of 1500MPa.

6. A vehicle, characterized in that: The invention comprises a double door knocker structure as claimed in any one of claims 1 to 5.

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