CN111976842A

CN111976842A - Vehicle body rear wall assembly

Info

Publication number: CN111976842A
Application number: CN202010824631.0A
Authority: CN
Inventors: 寇世宏; 王洪斌; 咸秋磊; 严婷; 刘净; 芮德军
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2020-11-24

Abstract

The invention provides a vehicle body rear wall assembly which comprises a folded plate-shaped rear wall outer plate with a low front part and a high rear part, wherein the rear end of a rear floor is connected with the inner side plate surface of a front vertical plate of the rear wall outer plate, the inner side plate surface of the rear vertical plate of the rear wall outer plate is connected with the transverse plate rear plate edge of an L-shaped folded plate-shaped rear wall inner plate, and the vertical plate lower plate edge of the rear wall inner plate is connected with the rear floor. In the scheme, the cavity at the surrounding position of the rear wall inner plate and the rear wall outer plate has a larger-area section, so that the torsional rigidity of the automobile body is greatly improved.

Description

Vehicle body rear wall assembly

Technical Field

The invention relates to the field of vehicle body structures, in particular to a vehicle body rear wall assembly of an automobile.

Background

The structure of the rear part of the automobile body, particularly the structure of the connecting area of the rear wall of a trunk and the lower part of a D column, is a key structure which influences the torsional rigidity of the framework of the automobile body, particularly the shapes of SUV, MPV and the like are more obvious, because the white automobile body of the automobile is different from a car and does not have a metal coat and hat rack, the area is relatively subjected to larger deformation and larger stress, and therefore the torsional rigidity of the automobile body is directly influenced by the quality of the structure of the area.

In the prior art, as shown in fig. 1 and 2, the inner panel of the back wall is a groove with a groove opening facing backwards, the section of the inner panel is smaller under the condition of the same weight, the connection between the inner panel of the back wall and the rear floor assembly is weaker, and the anti-torsion capability is poor. By adopting the structure, if the torsional rigidity is to be improved, the torsional rigidity is usually realized by increasing the thickness of a sheet metal or increasing a reinforcing structure, the sheet metal can increase more weight, the sheet metal can increase the number of parts and cost, the manufacturing process is difficult, and the improvement effect is not obvious.

Disclosure of Invention

The invention aims to provide a vehicle body rear wall assembly with high torsion resistance.

In order to achieve the purpose, the scheme of the invention is as follows: the utility model provides a enclose assembly behind automobile body, encloses the planking after including preceding low, the high folded plate form in back, and the rear end of back floor is connected with the inboard face of the preceding riser of enclosing the planking after, and the inboard face of the back riser of enclosing the planking after is connected with the diaphragm back plate edge of L type folded plate form enclose the inner panel after, and the riser hypoplastron edge of enclosing the inner panel after is connected with the back floor.

In the scheme, the cavity at the surrounding position of the rear wall inner plate and the rear wall outer plate has a larger-area section, so that the torsional rigidity of the automobile body is greatly improved.

Drawings

FIG. 1 is a schematic diagram of a prior art arrangement;

FIG. 2 is a cross-sectional view of FIG. 1;

FIGS. 3 and 5 are schematic structural views of the present invention;

FIG. 4 is a cross-sectional view taken along plane A-A of FIG. 3;

FIG. 6 is a disassembled schematic view of the present invention;

FIG. 7 is a schematic view of a D-pillar portion;

fig. 8 and 9 are schematic structural diagrams of the D-pillar partition and the rear wall partition, respectively.

Detailed Description

The utility model provides a enclose assembly behind automobile body which characterized in that: the rear wall outer plate comprises a folded plate-shaped rear wall outer plate 10 with a low front part and a high rear part, the rear end of a rear floor 20 is connected with the inner side plate surface of a front vertical plate 11 of the rear wall outer plate 10, the inner side plate surface of a rear vertical plate 12 of the rear wall outer plate 10 is connected with the rear plate edge of a transverse plate 31 of an L-shaped folded plate-shaped rear wall inner plate 30, and the lower plate edge of a vertical plate 32 of the rear wall inner plate 30 is connected with the rear floor 20.

Therefore, the cavity at the surrounding position of the rear wall inner plate 30 and the rear wall outer plate 10 has a cross section with a larger area, the torsional rigidity of the automobile body is greatly improved, and the rear wall inner plate 30 is directly connected with the rear floor 20, so that the rear floor 20 further supports the rear wall inner plate 30, and the torsional rigidity of the automobile body is also improved.

The rear wall inner plate 30 is connected with the lower end of the D column 50 through a rear wall connecting plate 40, and the rear wall connecting plate 40 is a folded plate formed by a connecting vertical plate 41 and a connecting arc plate 42. Therefore, the rear wall assembly forms a whole, and the bending resistance and torsion resistance of the rear wall assembly can be effectively improved.

The upper and lower plate edges of the connecting riser 41 of the rear wall connecting plate 40 are respectively connected with the lower plate edge of the D column front side plate 51 and the rear floor 20, the left and right plate edges of the connecting riser 41 of the rear wall connecting plate 40 are respectively connected with the riser 32 plate edge and the D column outer side plate 52, the rear plate edge of the connecting arc plate 42 is connected with the rear riser 12 and the D column rear plate 53, and the connecting arc plate 42 is connected with the D column inner side plate 54 and the transverse plate 31 of the rear wall inner plate 30. Enclose connecting plate 40 after like this and enclose into square tubular structure with the D post, have the cross-section of bigger area, promoted the torsional rigidity of automobile body greatly, enclose bending resistance antitorque ability after guaranteeing the lightweight while promotion.

The rear wall inner plate 30 and the rear wall connecting plate 40 are connected by a rear wall baffle 60, the surface of the rear wall baffle 60 is perpendicular to the vehicle width direction, the rear wall baffle 60 is positioned in a cavity surrounded by the rear wall inner plate 30, the rear wall outer plate 10 and the rear floor 20, the outline of the plate edge of the rear wall baffle 60 is consistent with the outline of the section of the cavity at the position of the rear wall baffle 60, and the plate edge of the rear wall baffle 60 is connected with the rear wall inner plate 30, the rear wall outer plate 10 and the rear floor 20 at the corresponding positions. The connection between the inner panel 30 and the connecting plate 40 is a weak point on the rear wall assembly, and generally breaks from the weak point, so that the rear wall partition 60 is arranged at the weak point, and the strength of the rear wall assembly is effectively improved.

The connecting part of the rear wall connecting plate 40 and the D column 50 is provided with a D column clapboard 70 which is horizontally arranged, the D column clapboard 70 is positioned in a cavity surrounded by the D column 50 and the rear wall connecting plate 40, the outline of the edge of the D column clapboard 70 is consistent with the outline of the section of the cavity at the position of the D column clapboard, and the edge of the D column clapboard 70 is connected with the rear wall connecting plate 40 and the D column 50 at the corresponding position. The junction of the rear wall web 40 and the D-pillar 50 is a weak point on the rear wall assembly, and generally will break from this point first, so the D-pillar bulkhead 70 is provided at this point, which effectively improves its strength.

The joint of the rear wall inner plate 30 and the rear wall connecting plate 40 is positioned above the automobile rear longitudinal beam 80. The rear surrounding partition plate 60 and the D-column partition plate 70 are arranged at the position, so that the stress concentration local pressure at the position is easily larger, and therefore, the position is arranged at the automobile rear longitudinal beam 80, and the structure of the position can be effectively supported by the automobile rear longitudinal beam 80 due to high structural strength.

And welding flanges are arranged at the joints of the edges of the plates of all the plate-shaped structures. This facilitates the welding installation.

Claims

1. The utility model provides a enclose assembly behind automobile body which characterized in that: the rear wall structure comprises a folded plate-shaped rear wall outer plate (10) which is low in front and high in rear, the rear end of a rear floor (20) is connected with the inner side plate surface of a front vertical plate (11) of the rear wall outer plate (10), the inner side plate surface of a rear vertical plate (12) of the rear wall outer plate (10) is connected with the rear plate edge of a transverse plate (31) of an L-shaped folded plate-shaped rear wall inner plate (30), and the lower plate edge of a vertical plate (32) of the rear wall inner plate (30) is connected with the rear floor (20).

2. The body cowl assembly as defined in claim 1, wherein: the rear wall inner plate (30) is connected with the lower end of the D column (50) through a rear wall connecting plate (40), and the rear wall connecting plate (40) is a folded plate formed by a connecting vertical plate (41) and a connecting arc plate (42).

3. The body cowl assembly as defined in claim 1, wherein: the upper and lower plate edges of the connecting vertical plate (41) of the rear wall connecting plate (40) are respectively connected with the lower plate edge of the D column front side plate (51) and the rear floor (20), the left and right plate edges of the connecting vertical plate (41) of the rear wall connecting plate (40) are respectively connected with the vertical plate (32) and the D column outer side plate (52), the rear plate edge of the connecting arc plate (42) is connected with the rear vertical plate (12) and the D column rear plate (53), and the connecting arc plate (42) is connected with the transverse plate (31) of the D column inner side plate (54) and the rear wall inner plate (30).

4. The body cowl assembly as defined in claim 1, wherein: the rear wall is characterized in that a rear wall partition plate (60) is arranged at the joint of the rear wall inner plate (30) and the rear wall connecting plate (40), the surface of the rear wall partition plate (60) is perpendicular to the width direction of the vehicle, the rear wall partition plate (60) is positioned in a cavity surrounded by the rear wall inner plate (30), the rear wall outer plate (10) and the rear floor (20), the contour of the plate edge of the rear wall partition plate (60) is consistent with the contour of the section of the cavity at the position of the rear wall partition plate, and the plate edge of the rear wall partition plate (60) is connected with the rear wall inner plate (30), the rear wall outer plate (10) and the rear floor (20.

5. The body cowl assembly as defined in claim 1, wherein: a horizontally arranged D column partition plate (70) is arranged at the joint of the rear wall connecting plate (40) and the D column (50), the D column partition plate (70) is positioned in a cavity surrounded by the D column (50) and the rear wall connecting plate (40), the outline of the plate edge of the D column partition plate (70) is consistent with the outline of the section of the cavity at the position of the D column partition plate, and the plate edge of the D column partition plate (70) is connected with the rear wall connecting plate (40) and the D column (50) at the corresponding position.

6. The body cowl assembly as defined in claim 1, wherein: the joint of the rear wall inner plate (30) and the rear wall connecting plate (40) is positioned above the automobile rear longitudinal beam (80).

7. The body cowl assembly as defined in claim 1, wherein: and welding flanges are arranged at the joints of the edges of the plates of all the plate-shaped structures.