CN222136866U - Car body double door ring structure and car - Google Patents

Abstract

The utility model discloses a vehicle body double door ring structure which comprises an A column part, a B column part, a C column part and a threshold part, wherein the A column part, the B column part and the threshold part form a first closed door ring, the C column part, the B column part and the threshold part form a second closed door ring, the A column part comprises an A column upper part and an A column lower part, an A column inner welding line is arranged between the A column upper part and the A column lower part, an A column threshold welding line is arranged between the A column lower part and the threshold part, the B column part comprises a B column upper part and a B column lower part, a B column inner welding line is arranged between the B column upper part and the B column lower part, a B column threshold welding line is arranged between the B column upper part and the A column upper part, a C column upper part and a C column lower part are arranged between the C column upper part and the C column lower part, a B column C column welding line is arranged between the C column upper part and the B column upper part, a C column welding line is arranged between the C column lower part and the C column lower part. An automobile with the automobile body double door ring structure.

Description

Car body double door ring structure and car

Technical Field

The utility model relates to the technical field of automobile parts, in particular to a double door ring structure of an automobile body and an automobile with the double door ring structure.

Background

At present, an automobile is used as a travel riding-instead tool in the work and life of people, a certain collision probability exists in the structure of the side face of the automobile body in the actual running process, the existing double door ring component parts are more, multiple times of welding are needed, the welding process is complex, the workload is increased, the overall strength of the double door is influenced, and the life safety of a driver is further influenced.

Disclosure of Invention

The utility model provides a vehicle body double door ring structure which comprises an A column part, a B column part, a C column part and a threshold part, has a simple composition structure and high integration level, can reduce welding links in the welding process, shortens the production line, reduces the use of station tools and reduces the production cost.

The utility model provides a vehicle body double door ring structure, which comprises an A column part, a B column part, a C column part and a threshold part, wherein the A column part, the B column part and the threshold part form a first closed door ring, and the C column part, the B column part and the threshold part form a second closed door ring;

the A column part comprises an A column upper part and an A column lower part, an A column inner welding line is arranged between the A column upper part and the A column lower part, and an A column threshold welding line is arranged between the A column lower part and the threshold part;

The B-pillar part comprises a B-pillar upper part and a B-pillar lower part, a B-pillar inner welding seam is arranged between the B-pillar upper part and the B-pillar lower part, an A-pillar B-pillar welding seam is arranged between the B-pillar upper part and the A-pillar upper part, and a B-pillar threshold welding seam is arranged between the B-pillar lower part and the threshold part;

The C column part comprises a C column upper part and a C column lower part, a C column inner welding seam is arranged between the C column upper part and the C column lower part, a B column C column welding seam is arranged between the C column upper part and the B column upper part, and a C column threshold welding seam is arranged between the C column lower part and the threshold part.

In an embodiment, the a-pillar B-pillar weld is collinear with the a-pillar threshold weld, and the B-pillar inner weld is collinear with the C-pillar inner weld.

In an embodiment, the threshold portion includes a threshold outer plate and a threshold rear connecting plate, there is a threshold inner weld between the threshold outer plate and the threshold rear connecting plate, the threshold outer plate is connected to the lower portion of the a pillar, and the lower portion of the B pillar, and the threshold rear connecting plate is connected to the lower portion of the C pillar.

In one embodiment, the B-pillar C-pillar weld is collinear with the rocker inner weld.

In one embodiment, an A column supporting plate is arranged on the upper part of the A column;

And/or a reinforcing plate on the a-pillar;

And/or the A column supporting plate and the A column upper reinforcing plate are respectively welded on the upper part of the A column before hot stamping forming and then reheated and stamped into an integrated structure;

and/or the A column supporting plate and the A column upper reinforcing plate are respectively welded on the upper part of the A column after hot stamping forming.

In one embodiment, the lower part of the A column is provided with an A column lower reinforcing plate;

and/or the lower reinforcing plate of the A column is welded on the lower part of the A column before hot stamping forming and then reheated and stamped into an integrated structure;

and/or the A column lower reinforcing plate is welded on an integrated structure of the lower part of the A column after hot stamping forming.

In one embodiment, a B column reinforcing lining plate is arranged on the lower part of the B column;

And/or a B-pillar lower reinforcement plate;

and/or the B column reinforcing lining plate and the B column lower reinforcing plate are respectively welded to the lower part of the B column and are hot stamped into an integrated structure;

And/or the B column reinforcing lining plate and the B column lower reinforcing plate are respectively welded at the lower part of the B column after 4 hot stamping forming.

In one embodiment, the rocker outer panel has a rocker reinforcement panel assembly mounted thereon,

In an embodiment, the threshold reinforcing plate assembly comprises a threshold reinforcing plate body, a threshold upper connecting plate, a threshold lower connecting plate and a threshold front connecting plate, wherein the threshold upper connecting plate is fixed at the top of the threshold reinforcing plate body, the threshold lower connecting plate is fixed at the bottom of the threshold reinforcing plate body, and the threshold front connecting plate is fixed at the top of the threshold reinforcing plate body.

In another aspect, the utility model provides an automobile comprising the automobile body double door ring structure.

The side wall double door ring assembly comprises an A column part, a B column part, a C column part and a threshold part, has a simple composition structure and high integration level, can reduce welding links in the welding process, increase the strength of the automobile body double door ring, shorten a welding production line in actual welding, reduce the use of station tools, reduce the production cost, ensure the life safety of a driver after being impacted, and increase the driving safety.

In the application, the welding seam of the column A and the welding seam of the column B are in the same straight line with the welding seam of the column A, the welding seam of the column B and the welding seam of the column C are in the same straight line with the welding seam of the column C, and in the actual welding process, the number of times of track switching formed by welding equipment is reduced, the welding efficiency is improved, and the cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view schematically showing the overall structure of a double door ring structure of a vehicle body according to an embodiment of the present application;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic rear view showing the overall structure of a double door ring structure of a vehicle body according to an embodiment of the present application;

FIG. 4 is a schematic perspective view of the threshold reinforcement plate assembly of FIG. 3;

FIG. 5 is a schematic view of a softened region according to an embodiment of the present application;

FIG. 6 is a schematic flow chart of a method for manufacturing a double door ring structure of a vehicle body according to an embodiment of the application;

Fig. 7 is a schematic flow chart of a manufacturing method of a vehicle body double door ring structure according to an embodiment of the application.

The upper part of the column A, the lower part of the column A, the column 2, the column B, the column 21, the column B, the column 22, the column B, the column 3, the column C, the column 31, the column C, the column 32, the column C, the column 4, the column door, the column 41, the column outer plate, the column 42, the column rear connecting plate, the column 51, the first closed door ring, the column 52, the second closed door ring, the column 61, the column A supporting plate, the column A upper reinforcing plate, the column A lower reinforcing plate, the column 64, the column B reinforcing liner plate, the column B lower reinforcing plate, the column 66, the column reinforcing plate assembly, the column 661, the column reinforcing plate body, the column 662, the column upper connecting plate, the column 663, the column lower connecting plate, the column 664, the column front connecting plate, the column 71, the column A inner welding line, the column 72, the column B inner welding line, the column door, the column B welding line 74, the column C inner welding line 75, the column C welding line, the column door 76, the column door frame B welding line door, the column welding line door frame 78, the column C welding line door frame welding line, the column 8 and the softened region.

Detailed Description

Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, or directly connected, or indirectly connected via an intermediary. The specific meaning of the terms described above will be understood to those of ordinary skill in the art in a specific context.

The terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," and the like are used as references to orientations or positional relationships based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships in which the inventive product is conventionally disposed in use, merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore are not to be construed as limiting the utility model.

The terms "first," "second," "third," and the like, are merely used for distinguishing between similar elements and not necessarily for indicating or implying a relative importance or order.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a list of elements does not include only those elements but may include other elements not expressly listed.

Example 1

Referring to fig. 1, the present embodiment provides a vehicle body double door ring structure, including: an A-pillar portion 1, a B-pillar portion 2, a C-pillar portion 3, and a rocker portion 4, wherein the A column part 1, the B column part 2 and the threshold part 4 form a first closed door ring 51, the C column part 3 the second closure door ring 52 of the B-pillar part 2 and the threshold part 4, the a-pillar part 1 comprising an a-pillar upper part 11 and an a-pillar lower part 12 with an a-pillar inner weld 71 between the a-pillar upper part 11 and the a-pillar lower part 12, an a-pillar threshold weld 76 between the a-pillar lower part 12 and the threshold part 4, the B-pillar part 2 comprising a B-pillar upper part 21 and a B-pillar lower part 22 with a B-pillar inner weld 72 between the B-pillar upper part 21 and the B-pillar lower part 22, an a-pillar B-pillar weld 73 between the B-pillar upper part 21 and the a-pillar upper part 11, a B-pillar weld 77 between the B-pillar lower part 22 and the threshold part 4, the C-pillar part 3 comprising a C-pillar upper part 31 and a C-pillar lower part 32 with a C-pillar inner weld 74 between the C-pillar upper part 31 and the B-pillar upper part 21, and a-pillar lower part 32 with a-pillar threshold weld 78 between the C-pillar lower part 32. It should be noted that in this embodiment, the a pillar portion, the B pillar portion, the C pillar portion, and the threshold portion are welded first to form a double door ring substrate, and then the double door ring substrate is cut by hot stamping to form a double door ring structure of the vehicle body.

The side wall double door ring assembly comprises the A column part 1, the B column part 2, the C column part 3 and the threshold part 4, has a simple composition structure and high integration level, can reduce welding links in the welding process, shortens the production line, reduces the use of station tools and reduces the production cost.

Referring to FIG. 1, in the present application, the A-pillar B-pillar weld 73 is collinear with the A-pillar threshold weld 76, and the B-pillar inner weld 72 is collinear with the C-pillar inner weld 74. In the actual welding process, the number of times of track switching formed by welding equipment is reduced, the welding efficiency is improved, and the cost is reduced.

Referring to fig. 1, in a specific example of the present application, the rocker portion 4 includes a rocker outer panel 41 and a rocker rear connecting panel 42, with an inner rocker weld 79 between the rocker outer panel 41 and the rocker rear connecting panel 42, the rocker outer panel 41 connecting the a-pillar lower 12, and the B-pillar lower 22, and the rocker rear connecting panel 42 connecting the C-pillar lower 32. Specifically, the B-pillar C-pillar weld 75 is collinear with the rocker inner weld 79. The present embodiment provides a specific structure of the threshold portion 4, in which the B-pillar C-pillar weld 75 and the threshold inner weld 79 are in the same straight line, and in the actual welding process, the number of times of track switching formed by the welding device is reduced, the welding efficiency is improved, and the cost is reduced.

Referring to fig. 2, in one embodiment of the present application, a rocker reinforcement plate assembly 66 is mounted on the rocker outer panel 41, and the rocker reinforcement plate assembly 66 includes a rocker reinforcement plate body 661, a rocker upper connection plate 662, a rocker lower connection plate 663, and a rocker front connection plate 664, the rocker upper connection plate 662 being fixed to the top of the rocker reinforcement plate body 661, the rocker lower connection plate 663 being fixed to the bottom of the rocker reinforcement plate body 661, the rocker front connection plate 664 being fixed to the end of the rocker reinforcement plate body 661. In this embodiment, the upper threshold connecting plate 662 and the lower threshold connecting plate 663 are fixed on the threshold reinforcing plate body 661 by rivets, the front threshold connecting plate 664 comprises three sheet metal plates riveted on the threshold reinforcing plate body 661 by rivets, and the upper threshold connecting plate 662, the lower threshold connecting plate 663 and the three sheet metal plates are welded and fixedly connected with the outer threshold plate 41, wherein the aluminum material of the threshold reinforcing plate body 661 is extruded and formed, the energy absorption property of aluminum profiles is improved, the side collision and column collision energy absorption effects are improved, and therefore deformation of member cabins is reduced, and the safety of vehicles is improved.

Referring to fig. 2, in a specific example provided by the application, an a-pillar support plate 61 and/or an a-pillar upper reinforcing plate 62 are arranged on an a-pillar upper portion 11, and/or the a-pillar support plate 61 and the a-pillar upper reinforcing plate 62 are respectively welded on the a-pillar upper portion 11 before hot stamping and then are thermally stamped into an integral structure, and/or the a-pillar support plate 61 and the a-pillar upper reinforcing plate 62 are respectively welded on the a-pillar upper portion 11 after hot stamping and then are respectively stamped. The a-pillar support plate 61 and the a-pillar upper reinforcement plate 62 are fitted with the a-pillar upper 11 according to actual needs, and the present application is not limited thereto. The A-pillar support plate 61 and/or the A-pillar upper reinforcing plate 62 are added on the A-pillar upper 11, so that the rigidity of the A-pillar upper 11 is increased, the deformation resistance is improved, the protection is increased, and the safety after being impacted is improved.

Referring to fig. 2, in a specific example provided by the present application, an a-pillar lower 12 is provided with an a-pillar lower reinforcement plate 63, and/or the a-pillar lower reinforcement plate 63 is welded to the a-pillar lower 12 before hot stamping and then is hot stamped into an integral structure, and/or the a-pillar lower reinforcement plate 63 is welded to the a-pillar lower 12 after hot stamping and then is integrally formed. The connection mode between the lower a-pillar reinforcement plate 63 and the lower a-pillar portion 12 is not limited, and the lower a-pillar reinforcement plate 63 increases the rigidity of the lower a-pillar portion 12, resists deformation, increases protection, and improves safety after impact.

Referring to fig. 2, in a specific example provided by the present application, a B-pillar reinforcing liner 64 is provided on the B-pillar lower 22, and/or a B-pillar lower reinforcing plate 65, and/or the B-pillar reinforcing liner 64 and the B-pillar lower reinforcing plate 65 are welded to the B-pillar lower 22 respectively, and are hot stamped into an integral structure, and/or the B-pillar reinforcing liner 64 and the B-pillar lower reinforcing plate 65 are welded to the hot stamped B-pillar lower 22 respectively. The B-pillar reinforcing liner 64 and/or the B-pillar lower reinforcement plate 65 are fixedly provided on the B-pillar lower 22 as needed, wherein the manner of fixing the B-pillar reinforcing liner 64 and the B-pillar lower reinforcement plate 65 to the B-pillar lower 22 is not limited. The B-pillar reinforcement panel 64 and the B-pillar lower reinforcement panel 65 increase the rigidity of the B-pillar lower 22, resist deformation, increase protection, and improve safety after an impact. It is worth mentioning that the lower part 22 of the B-pillar is provided with the softening area 8 by locally heating or laser heating the mold, and the softening area 8 enables the strength of the side wall double door ring assembly to be differentially distributed, so that the effects of energy absorption and deformation resistance are achieved, the deformation of the side collision passenger compartment is reduced, and the safety of the vehicle is improved.

In this embodiment, the materials of construction of the A-pillar upper portion 11, the A-pillar lower portion 12, the B-pillar upper portion 21, the B-pillar lower portion 22, and the rocker rear connecting plate 42 may be CR950/1300HS, CR950/1300HS-AS, CR1200/1800HS-AS, and the thickness ranges from 1.2mm to 2.0mm. The materials of construction of the rocker outer panel 41 may be CR370/550HS-AS, CR780/980HS-AS, CR950/1300HS, and CR950/1300HS-AS, with a thickness in the range of 1.4-1.8mm. The specific brand and thickness are selected according to the effect of energy absorption required by collision analysis. The materials of construction of the upper C-pillar portion 31 and the lower C-pillar portion 32 are CR370/550HS-AS, CR780/980HS-AS, CR950/1300HS-AS, and have a thickness in the range of 0.8-1.6mm. It should be noted that each part of the side wall double door ring cannot be used in a mixed manner (either all the plating layers or all the non-plating layers) by using the plating layers, wherein the plating layers can be made of the materials (plating thicknesses 75/75, 25/25) of CR950/1300HS-AS, CR370/550HS-AS, CR780/980HS-AS, CR1200/1800HS-AS, and the non-plating layers can be made of the materials of CR950/1300HS and CR1200/1800HS. The above material selection is some specific examples of the present application, and the technical solution of the present application can be to select materials according to the own requirements for manufacturing.

Example two

The embodiment provides a method for manufacturing a double door ring structure of a vehicle body in the first embodiment, which comprises the following steps:

Step S100, selecting steel coils of required materials, and cutting out an A column upper part 11, an A column lower part 12, a B column upper part 21, a B column lower part 22, a C column upper part 31, a C column lower part 32, a threshold outer plate 41 and a threshold rear connecting plate 42.

And 200, performing laser splice welding on the upper column A11, the lower column A12, the upper column B21, the lower column B22, the upper column C31, the lower column C32, the threshold outer plate 41 and the threshold rear connecting plate 42 in the step 100 to form a side wall double door ring assembly substrate with a first double door ring structure.

And step 300, performing hot stamping shearing on the side wall double door ring assembly base plate to form the vehicle body double door ring structure.

Referring to fig. 4, in some embodiments, step S100 further includes step S110 of cutting the a-pillar support plate 61, the a-pillar upper reinforcement plate 62, the a-pillar lower reinforcement plate 63, the B-pillar reinforcement liner 64, the B-pillar lower reinforcement plate 65, the rocker reinforcement plate body 661, the rocker upper connection plate 662, the rocker lower connection plate 663, and the rocker front connection plate 664, step S210 of welding the a-pillar support plate 61 and the a-pillar upper reinforcement plate 62 to the a-pillar upper portion 11, welding the a-pillar lower reinforcement plate 63 to the a-pillar lower portion 12, welding the B-pillar reinforcement liner 64 and the B-pillar lower reinforcement plate 65 to the B-pillar lower portion 22, riveting the rocker upper connection plate 662, the rocker lower connection plate 663, and the rocker front connection plate 664 to the rocker reinforcement plate body 661 to form a rocker reinforcement plate assembly 66, and welding the rocker upper connection plate 662, the rocker lower connection plate 663, and the rocker front connection plate 664 to the rocker outer plate 41.

Referring to fig. 5, in some embodiments, in step S110, there are further included a step S110 of cutting the a-pillar support plate 61, the a-pillar upper reinforcement plate 62, the a-pillar lower reinforcement plate 63, the B-pillar reinforcement liner 64, the B-pillar lower reinforcement plate 65, the rocker reinforcement plate body 661, the rocker upper connection plate 662, the rocker lower connection plate 663, and the rocker front connection plate 664, and a step S400 of welding the a-pillar support plate 61 and the a-pillar upper reinforcement plate 62 to the a-pillar upper portion 11 of the vehicle body double door ring structure, welding the a-pillar lower reinforcement plate 63 to the a-pillar lower portion 12 of the vehicle body double door ring structure, welding the B-pillar reinforcement liner 64 and the B-pillar lower reinforcement plate 65 to the B-pillar lower portion 22 of the vehicle body double door ring structure, riveting the rocker upper connection plate 662, the rocker lower connection plate 663, and the rocker front connection plate 664 to the rocker reinforcement plate body 661 to form a reinforcement plate assembly 66, and welding the rocker upper connection plate 663 and the rocker front connection plate 664 to the outer panel 41 of the vehicle body double door ring structure.

The manufacturing method is a specific example of the manufacturing method of the side wall double door ring assembly, but the manufacturing method is not limited to the specific manufacturing method and is selected according to actual requirements, the manufacturing method is simple, the strength of the formed side wall double door ring assembly is high, external impact can be effectively absorbed, and safety of a vehicle is protected.

Example III

The embodiment provides an automobile, including the two door ring structures of automobile body in embodiment one, the two door ring assemblies of side wall are installed on the automobile body, in the in-service use, the two door ring assemblies of side wall in this embodiment are integrated into an organic whole structure, guarantee holistic intensity, but be provided with softening region 8 in B post lower part 22 for the intensity difference of two door ring assemblies of side wall distributes, reaches energy-absorbing, anti-deformation effect, reduces the side and bumps passenger cabin deflection, improves vehicle security.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model. Accordingly, the scope of the utility model should be assessed as that of the appended claims.

Claims (10)

1. The double door ring structure of the vehicle body is characterized by comprising an A column part (1), a B column part (2), a C column part (3) and a threshold part (4), wherein the A column part (1), the B column part (2) and the threshold part (4) form a first closed door ring (51), and the C column part (3), the B column part (2) and the threshold part (4) form a second closed door ring (52);

The A column part (1) comprises an A column upper part (11) and an A column lower part (12), an A column inner welding line (71) is arranged between the A column upper part (11) and the A column lower part (12), and an A column threshold welding line (76) is arranged between the A column lower part (12) and the threshold part (4);

The B-pillar part (2) comprises a B-pillar upper part (21) and a B-pillar lower part (22), a B-pillar inner weld joint (72) is arranged between the B-pillar upper part (21) and the B-pillar lower part (22), an A-pillar B-pillar weld joint (73) is arranged between the B-pillar upper part (21) and the A-pillar upper part (11), and a B-pillar threshold weld joint (77) is arranged between the B-pillar lower part (22) and the threshold part (4);

The C column part (3) comprises a C column upper part (31) and a C column lower part (32), a C column inner welding line (74) is arranged between the C column upper part (31) and the C column lower part (32), a B column C column welding line (75) is arranged between the C column upper part (31) and the B column upper part (21), and a C column threshold welding line (78) is arranged between the C column lower part (32) and the threshold part (4).

2. The vehicle body double door ring structure according to claim 1, wherein the a-pillar B-pillar weld (73) is collinear with the a-pillar rocker weld (76), and the B-pillar inner weld (72) is collinear with the C-pillar inner weld (74).

3. The vehicle body double door ring structure according to claim 1, characterized in that the rocker portion (4) includes a rocker outer panel (41) and a rocker rear connecting panel (42), the rocker outer panel (41) and the rocker rear connecting panel (42) having a rocker inner weld (79) therebetween, the rocker outer panel (41) connecting the a pillar lower portion (12), and a B pillar lower portion (22), the rocker rear connecting panel (42) connecting with the C pillar lower portion (32).

4. A vehicle body double door ring structure as claimed in claim 3, wherein said B-pillar C-pillar weld (75) is collinear with said rocker inner weld (79).

5. The vehicle body double door ring structure according to claim 1, wherein an a-pillar support plate (61) is provided on the a-pillar upper portion (11);

and/or a column-top reinforcement plate (62);

And/or the A column supporting plate (61) and the A column upper reinforcing plate (62) are respectively welded on the A column upper part (11) before hot stamping forming and then are reheated and stamped into an integrated structure;

And/or the A-pillar support plate (61) and the A-pillar upper reinforcing plate (62) are respectively welded on the A-pillar upper part (11) after hot stamping forming.

6. The vehicle body double door ring structure according to claim 1, wherein an a-pillar lower reinforcement plate (63) is provided on the a-pillar lower portion (12);

And/or the A column lower reinforcing plate (63) is welded on the A column lower part (12) before hot stamping forming and then reheated and stamped into an integrated structure;

And/or the A-pillar lower reinforcement plate (63) is welded to the integrated structure of the A-pillar lower portion (12) after hot stamping.

7. The vehicle body double door ring structure according to claim 1, wherein a B-pillar reinforcement liner (64) is provided on the B-pillar lower portion (22);

And/or a B-pillar lower reinforcement plate (65);

And/or the B-pillar reinforcing lining plate (64) and the B-pillar lower reinforcing plate (65) are respectively welded to the lower part (22) of the B-pillar and are hot stamped into an integrated structure;

And/or the B-pillar reinforcing lining plate (64) and the B-pillar lower reinforcing plate (65) are respectively welded on the lower part (22) of the B-pillar after 4-hot stamping forming.

8. The vehicle body double door ring structure according to claim 1, further comprising a rocker reinforcement plate assembly (66) mounted on the rocker outer plate (41) for enhancing the energy absorbing effect of the side wall double door ring assembly.

9. The vehicle body double door ring structure according to claim 8, wherein the rocker reinforcement plate assembly (66) includes a rocker reinforcement plate body (661), a rocker upper connection plate (662), a rocker lower connection plate (663), and a rocker front connection plate (664), the rocker upper connection plate (662) being fixed to a top of the rocker reinforcement plate body (661), the rocker lower connection plate (663) being fixed to a bottom of the rocker reinforcement plate body (661), the rocker front connection plate (664) being fixed to a top of the rocker reinforcement plate body (661).

10. An automobile comprising the automobile body double door ring structure as claimed in any one of claims 1 to 9.