CN215851501U - Rear lower body support assembly - Google Patents

Abstract

The utility model provides a rear lower body support assembly. This rear portion lower body supporting component includes rear wheel casing reinforcing plate, main tributary fagging and auxiliary support board. The rear wheel casing reinforcing plate comprises a first reinforcing piece and a second reinforcing piece which are fixedly connected, the second reinforcing piece is arranged at the rear part of the first reinforcing piece, and the first reinforcing piece and the second reinforcing piece are fixedly connected with a rear wheel casing inner plate. The upper end of main tributary fagging with first reinforcement with rear wheel casing inner panel fixed connection, the lower part of main tributary fagging respectively with back longeron and rear floor crossbeam fixed connection. The upper portion of the auxiliary supporting plate is fixedly connected with the second reinforcing piece and the rear wheel casing inner plate, and the lower portion of the auxiliary supporting plate is fixedly connected with the rear longitudinal beam. A frame structure is formed in the connected rear wheel cover area, so that the rigidity and the strength of a shock absorber mounting point are improved, and meanwhile, the rear wheel cover inner plate and the rear longitudinal beam are connected to disperse the stress value of the wheel cover area.

Description

Rear lower body support assembly

Technical Field

The utility model relates to the technical field of automobile bodies, in particular to a rear lower body supporting assembly.

Background

In the driving process of an automobile on a bumpy road section, excitation of a chassis road surface can transfer an automobile body, repeated motion of a rear suspension shock absorber can cause repeated stress on an automobile body structure in a rear wheel cover area, and the structural strength of the rear wheel cover area directly influences the torsional rigidity and safety performance of the whole automobile; repeated movement also causes a series of problems such as cracking and abnormal sound of the automobile body.

The rear wheel cover area lap joint structure in the prior art is shown in figures 1 and 2, a side wall 1 'is connected with a rear floor 2' only through a smaller support bracket 3 ', a rear end plate at the position of a tail door is connected with the rear floor 2' only through a flanging, the structure is not connected, the torsional rigidity of the whole vehicle is poor, the NVH performance is poor, and vibration and noise in the vehicle are caused; the main connecting positions of the side wall 1 ' and the rear floor 2 ' and the rear crossbeam 4 ' are flanges, the stress is large when the rear suspension shock absorber moves repeatedly, and the flanges are easy to crack, so that the safety performance is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a rear lower vehicle body supporting assembly, wherein a main supporting plate of the rear lower vehicle body supporting assembly is connected with a rear wheel cover inner plate and a rear floor cross beam, and a frame structure is formed in the connected rear wheel cover area, so that the rigidity and the strength of a shock absorber mounting point are improved, and an auxiliary supporting plate is added to be simultaneously connected with a rear wheel cover inner plate and a rear longitudinal beam so as to disperse the stress value of the wheel cover area.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

according to an aspect of the present invention, there is provided a rear lower body support assembly including a rear wheel house reinforcement plate, a main support plate, and a subsidiary support plate. The rear wheel casing reinforcing plate comprises a first reinforcing piece and a second reinforcing piece which are fixedly connected, the second reinforcing piece is arranged at the rear part of the first reinforcing piece, and the first reinforcing piece and the second reinforcing piece are fixedly connected with a rear wheel casing inner plate. The upper end of main tributary fagging with first reinforcement with rear wheel casing inner panel fixed connection, the lower part of main tributary fagging respectively with back longeron and rear floor crossbeam fixed connection. The upper portion of the auxiliary supporting plate is fixedly connected with the second reinforcing piece and the rear wheel casing inner plate, and the lower portion of the auxiliary supporting plate is fixedly connected with the rear longitudinal beam.

According to an embodiment of the present invention, the first reinforcement member and the second reinforcement member are integrally formed or fixedly connected to each other.

According to an embodiment of the present invention, the main supporting plate includes a first attaching surface, a first connecting portion, and a second attaching surface, the first attaching surface is fixedly connected to the first reinforcement and the rear wheel house inner plate, the first connecting portion extends obliquely from a bottom edge of the first attaching surface to the rear longitudinal beam and is fixedly connected to an outer side edge of the second attaching surface, and the second attaching surface is fixedly attached to the rear longitudinal beam and the rear floor cross beam.

According to an embodiment of the present invention, the first connecting portion, the rear floor cross member, the rear side member, and the rear wheel house inner panel enclose a first cavity having a triangular cross section.

According to an embodiment of the present invention, the first connecting portion is provided with a process hole for improving a solder joint pitch.

According to an embodiment of the present invention, the shape of the process hole is an inverted trapezoid.

According to an embodiment of the present invention, the auxiliary support plate includes a third attaching surface, a second connecting portion, and a fourth attaching surface, the third attaching surface is fixedly connected to the second reinforcement and the rear wheel house inner panel, the fourth attaching surface is fixedly connected to the rear side member, and the second connecting portion extends from a bottom edge of the third attaching surface to an outer side edge of the fourth attaching surface.

According to an embodiment of the present invention, the second connecting portion, the rear side member, and the rear wheel house inner panel are surrounded to form a closed second cavity.

According to an embodiment of the present invention, the rear frame further includes a rear end reinforcing plate, an upper portion of the rear end reinforcing plate is fixedly connected to the rear end plate assembly, and a lower portion of the rear end reinforcing plate is fixedly connected to the rear side member.

According to an embodiment of the present invention, the rear end stiffener includes a fifth bonding surface, a third bonding surface, and a sixth bonding surface, the fifth bonding surface is fixedly connected to the rear end plate assembly, the sixth bonding surface is fixedly connected to the rear side member, and the third bonding portion extends from a bottom end of the fifth bonding surface obliquely forward to the rear side member and is fixedly connected to a rear end of the sixth bonding surface.

One embodiment of the present invention has the following advantages or benefits:

the rear wheel cover reinforcing plate of the rear lower vehicle body supporting assembly is formed by fixedly connecting a first reinforcing member and a second reinforcing member, the first reinforcing member and the second reinforcing member are attached to a rear wheel cover inner plate to disperse the stress value of a local area of the rear wheel cover inner plate, one end of a main supporting plate is connected with the first reinforcing member and the rear wheel cover inner plate, the other end of the main supporting plate is connected with a rear longitudinal beam and a rear floor beam, a frame structure is formed in the connected rear wheel cover area, and therefore the rigidity and the strength of a shock absorber mounting point are improved, and an auxiliary supporting plate is additionally arranged behind the main supporting plate and simultaneously connected with the rear wheel cover inner plate and the rear longitudinal beam to further disperse the stress value of the wheel cover area.

Drawings

The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

FIG. 1 is an interior view of a rear lower body support assembly according to the prior art.

Fig. 2 is a sectional view a-a of fig. 1 of a rear lower body support assembly according to the prior art.

FIG. 3 is a rear underbody support assembly landing configuration shown in accordance with an exemplary embodiment.

FIG. 4 is an interior view of a rear lower body support assembly according to an exemplary embodiment.

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 3, shown in accordance with an exemplary embodiment.

FIG. 6 is a cross-sectional view taken along line C-C of FIG. 4, shown in accordance with an exemplary embodiment.

FIG. 7 is a cross-sectional view taken along line D-D of FIG. 4, shown in accordance with an exemplary embodiment.

FIG. 8 is a schematic illustration of a rear wheel house reinforcement plate structure in a rear underbody support assembly, according to an exemplary embodiment.

FIG. 9 is a schematic illustration of a main support plate structure in a rear lower body support assembly according to an exemplary embodiment.

FIG. 10 is a schematic illustration of a structure of an accessory support plate in a rear underbody support assembly, according to an exemplary embodiment.

FIG. 11 is a schematic illustration of a rear end stiffener structure in a rear underbody support assembly, according to an exemplary embodiment.

Wherein the reference numerals are as follows:

1', side walls; 2', a rear floor; 3', a support bracket; 4', a rear crossbeam;

1. a rear wheel house reinforcing plate; 11. a first reinforcement; 12. a second reinforcement;

2. a main supporting plate; 21. a first binding surface; 22. a first connection portion; 221. a fabrication hole; 23. a second bonding surface;

3. an auxiliary support plate; 31. a third bonding surface; 32. a second connecting portion; 33. a fourth binding surface;

4. a rear end reinforcing plate; 41. a fifth binding face; 42. a third connecting portion; 43. a sixth bonding surface;

5. a rear floor beam; 6. a rear stringer; 7. a rear end plate assembly; 8. a rear wheel house inner panel; 9. a rear floor assembly;

100. a first cavity; 200. a second cavity; 300. a third cavity.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

The terms "a," "an," "the," "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.

As shown in fig. 3 to 11, fig. 3 shows a rear lower body support assembly lap joint view provided by the present invention. FIG. 4 illustrates an interior view of a rear lower body support assembly provided by the present invention. Fig. 5 shows a cross-sectional view taken along line B-B of fig. 3 in accordance with the present invention. Fig. 6 shows a cross-sectional view taken along line C-C of fig. 4 in accordance with the present invention. Fig. 7 shows a cross-sectional view taken along line D-D of fig. 4 in accordance with the present invention. Fig. 8 shows a schematic structural view of a rear wheel house reinforcing plate 1 in a rear lower body support assembly provided by the present invention. Fig. 9 is a schematic view showing the structure of a main support plate 2 in a rear lower body support assembly according to the present invention. Fig. 10 shows a schematic structural view of the auxiliary support plate 3 in the rear lower body support assembly provided by the present invention. Fig. 11 shows a schematic structural view of a rear end reinforcing plate 4 in a rear lower body support assembly provided by the present invention. The utility model relates to a rear lower body support component which is bilaterally symmetrical, and is specifically explained by a rear lower body support component on the left side of an automobile.

The rear lower vehicle body support assembly of the embodiment of the utility model comprises a rear wheel cover reinforcing plate 1, a main support plate 2 and an auxiliary support plate 3. Rear wheel casing reinforcing plate 1 includes fixed connection's first reinforcement 11 and second reinforcement 12, second reinforcement 12 set up in the rear of first reinforcement 11, first reinforcement 11 with second reinforcement 12 all with rear wheel casing inner panel 8 fixed connection. The upper end of main tributary fagging 2 with first reinforcement 11 with rear wheel casing inner panel 8 fixed connection, the lower part of main tributary fagging 2 respectively with back longeron 6 and rear floor crossbeam 5 fixed connection. The upper portion of the auxiliary support plate 3 is fixedly connected with the second reinforcement 12 and the rear wheel house inner plate 8, and the lower portion of the auxiliary support plate 3 is fixedly connected with the rear longitudinal beam 6.

Wherein, rear wheel casing reinforcing plate 1 attaches to on the rear wheel casing inner panel 8, including first reinforcement 11 and second reinforcement 12, first reinforcement 11 sets up and fixed connection side by side with second reinforcement 12, makes the rear end of first reinforcement 11 and the front end fixed connection of second reinforcement 12, the upper end of first reinforcement 11 is in C post corresponding position department, and the lower extreme of first reinforcement 11 passes through main tributary fagging 2 and connects on back longeron 6 and back floor crossbeam 5, and first reinforcement 11 forms frame construction in the rear wheel casing region, because the bumper shock absorber mounting point sets up in the rear wheel casing region, and then main tributary fagging 2 can promote the rigidity and the intensity of bumper shock absorber mounting point, promotes the supporting effect of automobile body down simultaneously. The upper end of the auxiliary supporting plate 3 is connected with a second reinforcing part 12 and a rear wheel cover inner plate 8, the lower end of the auxiliary supporting plate is connected with a rear longitudinal beam 6, high stress on the rear wheel cover reinforcing plate 1 can be dispersed to other positions on the rear longitudinal beam 6, and then the problem of durable cracking of the joint of the main supporting plate 2 and the rear wheel cover reinforcing plate 1 and the rear wheel cover inner plate 8 can be solved. Preferably, after the rear floor assembly 9 is added, since the rear floor assembly 9 is disposed above the rear longitudinal beam 6, the main support plate 2, the rear floor assembly 9 and the rear longitudinal beam 6 are fixed in a three-layer manner, and the auxiliary support plate 3, the rear floor assembly 9 and the rear longitudinal beam 6 are fixed in a three-layer manner.

In a preferred embodiment of the present invention, the first reinforcement member 11 and the second reinforcement member 12 are integrally formed or fixedly secured to each other.

As shown in fig. 3 to 8, the strength of the first reinforcement 11 and the second reinforcement 12 in the rear wheel house reinforcement plate 1 can be enhanced even more by being integrally formed and fixedly joined together. Preferably, the first reinforcement 11 and the second reinforcement 12 may be welded and fixed.

In a preferred embodiment of the present invention, the main supporting plate 2 includes a first attaching surface 21, a first connecting portion 22 and a second attaching surface 23, the first attaching surface 21 is fixedly connected to the first reinforcing member 11 and the rear wheel house inner panel 8, the first connecting portion 22 extends from a bottom edge of the first attaching surface 21 to the rear longitudinal member 6 in an oblique manner and is fixedly connected to an outer side edge of the second attaching surface 23, and the second attaching surface 23 is fixedly attached to the rear longitudinal member 6 and the rear floor cross member 5.

As shown in fig. 3 to 8, the first attaching surface 21 has an overlapping portion with the first reinforcement 11 and the rear wheel house inner panel 8, the first attaching surface 21 is fixed to the first reinforcement 11 and the rear wheel house inner panel 8 at the corresponding position of the overlapping portion in two layers, the second attaching surface 23 is disposed at the joint of the rear side member 6 and the rear floor cross member 5, and has an overlapping portion with the rear side member 6 and the rear floor cross member 5, and is fixed at the corresponding position of the overlapping portion in two layers, and the upper and lower ends of the first connecting portion 22 are fixedly connected to the bottom edge of the first attaching surface 21 and the outer side edge of the second attaching surface 23, respectively, so that the side impact force can be directly transmitted to the rear side member 6 and the rear floor cross member 5 by the rear wheel house inner panel 8, and local high stress on the rear wheel house inner panel 8 is dispersed.

Preferably, the first attaching surface 21, the first connecting portion 22 and the second attaching surface 23 are integrally formed or fixedly connected to form a whole, so that the rigidity and strength of the main support plate 2 are increased, the first attaching surface 21, the rear wheel house inner plate 8 and the first reinforcing member 11 are welded and fixed in a two-layer mode respectively, the second attaching surface 23, the rear longitudinal beam 6 and the rear floor beam 5 are welded and fixed in a two-layer mode respectively, the contact area of the main support plate 2 at each joint can be increased through welding in two layers, and further the rigidity and strength of the main support plate 2 at the joint are increased.

In a preferred embodiment of the present invention, the first connecting portion 22, the rear floor cross member 5, the rear side member 6 and the rear wheel house inner panel 8 enclose a first cavity 100 having a triangular cross section.

As shown in fig. 3 and 6, the cross section of the rear floor cross beam 5 is one side of a triangle in the horizontal direction, the cross section of the rear wheel house inner panel 8 is the second side of the triangle, because the rear wheel house reinforcing plate 1 is attached to the rear wheel house inner panel 8, the first connecting portion 22 extends from the upper rear wheel house inner panel 8 to the connecting portion of the rear floor cross beam 5 and the rear longitudinal beam 6 in the lower direction, the cross section forms the third side of the triangle, and the first cavity 100 increases the supporting stability of the rear lower vehicle body by using the stabilizing principle of the triangle.

Preferably, the cross section of the first connecting portion 22 is "n" shape, and the flange structure of the bottom surface is not attached to the rear wheel casing inner plate 8 and the rear longitudinal beam 6, but extends from top to bottom along with the main body of the first connecting portion 22, so that the cavity volume of the first cavity 100 can be enlarged, the rigidity and strength of the force transmission path can be improved, and the problem of cracking of the main supporting plate 2 can be avoided. The increase in volume of first cavity 100 raises the dynamic stiffness minimum in the region of the rear shock absorber mounting point 1766 and 1883.

In a preferred embodiment of the present invention, the first connection portion 22 is formed with a process hole 221 for improving a solder joint pitch.

As shown in fig. 3, 4, 6 and 9, the welding points of the rear longitudinal beam 6 and the rear floor cross beam 5 can be added below the position corresponding to the fabrication hole 221, so that the distance between the welding points can be shortened, and the rigidity and the strength of the welding between the rear longitudinal beam 6 and the rear floor cross beam 5 can be further increased. Meanwhile, the gluing reliability is improved, the welding spot span of the gluing sealing area is shortened from 200mm to 60-140mm, the gluing reliability at the position is improved, and the sealing effect is improved.

In a preferred embodiment of the present invention, the shape of the process hole 221 is an inverted trapezoid.

As shown in fig. 9, since the upper end of the first connecting portion 22 is connected to the rear wheel house inner panel 8, the lower end is connected to the connection between the rear longitudinal beam 6 and the rear floor cross beam 5, the width of the upper end of the first connecting portion 22 is greater than the width of the lower end, and the shape of the fabrication hole 221 is inverted trapezoid, so that the upper edge is greater than the lower edge, the width of the first connecting portion 22 is maximally adapted on the premise of not reducing the rigidity and strength of the main supporting plate 2, and the welding spots are increased to the maximum extent.

In a preferred embodiment of the present invention, the auxiliary support plate 3 includes a third attaching surface 31, a second connecting portion 32 and a fourth attaching surface 33, the third attaching surface 31 is fixedly connected to the second reinforcement 12 and the rear wheel house inner panel 8, the fourth attaching surface 33 is fixedly connected to the rear side member 6, and the second connecting portion 32 extends from a bottom edge of the third attaching surface 31 to an outer side edge of the fourth attaching surface 33.

As shown in fig. 3 to 7 and 10, the third adhesion surface 31 has an overlapping portion with the second reinforcement 12 and the rear wheel house inner panel 8, the third adhesion surface 31 is fixed to the second reinforcement 12 and the rear wheel house inner panel 8 at corresponding positions of the overlapping portion in two layers, the fourth adhesion surface 33 is disposed on the rear side member 6 and has an overlapping portion with the rear side member 6, the fourth adhesion surface 33 is fixed to the rear side member 6 at corresponding positions of the overlapping portion in two layers, and upper and lower ends of the second connection portion 32 are fixedly connected to a bottom edge of the third adhesion surface 31 and an outer side edge of the fourth adhesion surface 33, respectively, so that a side impact force can be directly transmitted to the rear side member 6 from the rear wheel house inner panel 8 and the second reinforcement 12, and the main support plate 2 is assisted to disperse local high stress on the rear wheel house reinforcement 1 at the same time.

Preferably, the third attaching surface 31, the second connecting portion 32 and the fourth attaching surface 33 are integrally formed or fixedly connected to form a whole, so that the rigidity and the strength of the auxiliary support plate 3 are increased, the third attaching surface 31, the rear wheel cover inner plate 8 and the second reinforcement 12 are respectively welded and fixed in a two-layer mode, the fourth attaching surface 33 and the rear longitudinal beam 6 are welded and fixed in a two-layer mode, the contact area of the auxiliary support plate 3 at each connecting portion can be increased through welding in the two-layer mode, and the rigidity and the strength of the auxiliary support plate 3 at the connecting portion are further increased.

In a preferred embodiment of the present invention, the second connecting portion 32, the rear side member 6 and the rear wheel house inner panel 8 enclose a closed second cavity 200.

As shown in fig. 3 and 7, the cross section of the rear longitudinal beam 6 is one side of a triangle in the horizontal direction, the cross section of the rear wheel house inner panel 8 is the second side of the triangle, the rear wheel house reinforcing plate 1 is attached to the rear wheel house inner panel 8, the second connecting portion 32 extends from the upper rear wheel house inner panel 8 obliquely inwards to the lower rear longitudinal beam 6, the cross section of the second connecting portion forms the third side of the triangle, and the second cavity 200 increases the supporting stability of the rear lower vehicle body by using the principle of the triangle.

In a preferred embodiment of the present invention, the rear end reinforcing plate 4 is further included, an upper portion of the rear end reinforcing plate 4 is fixedly connected with the rear end plate assembly 7, and a lower portion of the rear end reinforcing plate 4 is fixedly connected with the rear longitudinal beam 6.

As shown in fig. 3 to 5 and 11, the upper end of the rear end reinforcing plate 4 is fixedly connected with the rear end plate assembly 7, the lower part of the rear end reinforcing plate 4 is fixedly connected with the rear longitudinal beam 6, the rear end reinforcing plate 4 extends from the rear end plate assembly 7 to the rear longitudinal beam 6 from top to bottom in an inclined and forward manner, the rigidity and the strength of the joint of the rear longitudinal beam 6 and the rear end plate assembly 7 are increased, and the diamond-shaped mode body of the tail gate is changed to 3.09 Hz. Preferably, when the rear floor assembly 9 is added, since the rear floor assembly 9 is disposed above the rear side members 6, the rear end reinforcing plate 4, the rear floor assembly 9, and the rear side members 6 are fixed in a three-layer manner.

In a preferred embodiment of the present invention, the rear end reinforcing plate 4 includes a fifth abutting surface 41, a third abutting surface 42 and a sixth abutting surface 43, the fifth abutting surface 41 is fixedly connected to the rear end plate assembly 7, the sixth abutting surface 43 is fixedly connected to the rear longitudinal beam 6, and the third abutting surface 42 extends from the bottom end of the fifth abutting surface 41 to the rear longitudinal beam 6 obliquely and forwardly and is fixedly connected to the rear end of the sixth abutting surface 43.

As shown in fig. 11, the fifth bonding surface 41 has an overlapping portion with the rear end plate assembly 7, the fifth bonding surface 41 and the rear end plate assembly 7 are fixed in two layers at a corresponding position of the overlapping portion, the sixth bonding surface 43 is disposed on the rear side member 6 and has an overlapping portion with the rear side member 6, the sixth bonding surface 43 and the rear side member 6 are fixed in two layers at a corresponding position of the overlapping portion, and upper and lower ends of the third connecting portion 42 are fixedly connected to a bottom edge of the fifth bonding surface 41 and an outer side edge of the sixth bonding surface 43, respectively, so that the side impact force can be directly transmitted from the rear end plate assembly 7 to the rear side member 6, and local high stress on the rear end plate assembly 7 is dispersed.

Preferably, the fifth attaching surface 41, the third connecting portion 42 and the sixth attaching surface 43 are integrally formed or fixedly connected to form a whole, so that the rigidity and strength of the rear end reinforcing plate 4 are increased, the fifth attaching surface 41 and the rear end plate assembly 7 are welded and fixed in a two-layer manner, the sixth attaching surface 43 and the rear longitudinal beam 6 are welded and fixed in a two-layer manner, and the contact area of the rear end reinforcing plate 4 at each connecting position can be increased by welding in two layers, so that the rigidity and strength of the connecting position are increased.

Preferably, the rear longitudinal beam 6, the rear end plate assembly 7 and the third connecting portion 42 are enclosed to form a closed third cavity 300, the longitudinal section of the rear longitudinal beam 6 is one side of a triangle in the horizontal direction, the longitudinal section of the rear end plate assembly 7 is a second side of the triangle, the second connecting portion 32 extends from the upper rear end plate assembly 7 to the lower rear longitudinal beam 6 obliquely and forwards, the cross section of the second connecting portion forms the third side of the triangle, and the third cavity 300 increases the supporting stability of the rear lower vehicle body by using the stabilizing principle of the triangle.

The rear wheel cover reinforcing plate 1 of the rear lower vehicle body supporting assembly is formed by fixedly connecting a first reinforcing part 11 and a second reinforcing part 12, the first reinforcing part 11 and the second reinforcing part are attached to a rear wheel cover inner plate 8 to disperse the local area stress value of the rear wheel cover inner plate 8, one end of a main supporting plate 2 is connected with the first reinforcing part 11 and the rear wheel cover inner plate 8, the other end of the main supporting plate is connected with a rear longitudinal beam 6 and a rear floor cross beam 5, and a frame structure is formed in the connected rear wheel cover area, so that the rigidity and the strength of a shock absorber mounting point are improved, an auxiliary supporting plate 3 is added behind the main supporting plate 2 and is simultaneously connected with the rear wheel cover inner plate 8 and the rear longitudinal beam 6 to further disperse the stress value of the wheel cover area, the torsion rigidity of the whole vehicle is improved by 2187N.m/° and the local stress of the whole vehicle is reduced by 20%. .

In embodiments of the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the description of the present embodiments, it should be understood that the terms "upper" and "lower" indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, which are only used for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or units must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present invention.

In the description herein, the appearances of the phrase "one embodiment," "a preferred embodiment," or the like, are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present embodiment by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims (10)

1. A rear under body support assembly, comprising:

the rear wheel cover reinforcing plate (1) comprises a first reinforcing piece (11) and a second reinforcing piece (12) which are fixedly connected, the second reinforcing piece (12) is arranged behind the first reinforcing piece (11), and the first reinforcing piece (11) and the second reinforcing piece (12) are fixedly connected with a rear wheel cover inner plate (8);

the upper end of the main support plate (2) is fixedly connected with the first reinforcing part (11) and the rear wheel cover inner plate (8), and the lower part of the main support plate (2) is fixedly connected with a rear longitudinal beam (6) and a rear floor cross beam (5) respectively; and

the upper portion of the auxiliary supporting plate (3) is fixedly connected with the second reinforcing piece (12) and the rear wheel cover inner plate (8), and the lower portion of the auxiliary supporting plate (3) is fixedly connected with the rear longitudinal beam (6).

2. The rear lower vehicle body support assembly according to claim 1, wherein the first reinforcement member (11) and the second reinforcement member (12) are integrally formed or fixedly secured to one piece.

3. The rear lower body support assembly according to claim 1, wherein the main support plate (2) comprises a first attaching surface (21), a first connecting portion (22) and a second attaching surface (23) which are fixedly connected, the first attaching surface (21) is fixedly connected with the first reinforcement (11) and the rear wheel cover inner plate (8), the first connecting portion (22) extends obliquely from a bottom edge of the first attaching surface (21) to the rear longitudinal beam (6) and is fixedly connected with an outer side edge of the second attaching surface (23), and the second attaching surface (23) is fixedly attached to the rear longitudinal beam (6) and the rear floor cross beam (5).

4. The rear underbody support assembly according to claim 3, characterized in that the first connection portion (22), the rear floor cross member (5), the rear side member (6) and the rear wheel house inner panel (8) enclose a first cavity (100) having a triangular cross section.

5. The rear lower body support assembly according to claim 3, wherein the first connecting portion (22) is formed with a process hole (221) for improving a solder joint interval.

6. The rear lower vehicle body support assembly according to claim 5, wherein the shape of the tooling hole (221) is an inverted trapezoid.

7. The rear underbody support assembly of any one of claims 1 to 6, characterized in that the auxiliary support plate (3) comprises a third abutting surface (31), a second connecting portion (32) and a fourth abutting surface (33), the third abutting surface (31) is fixedly connected with the second reinforcement (12) and the rear wheel house inner panel (8), the fourth abutting surface (33) is fixedly connected with the rear side member (6), and the second connecting portion (32) extends from a bottom edge of the third abutting surface (31) to an outer side edge of the fourth abutting surface (33).

8. The rear underbody support assembly according to claim 7, characterized in that the second connecting portion (32), the rear side member (6) and the rear wheel house inner panel (8) enclose a closed second cavity (200).

9. The rear underbody support assembly of any one of claims 1 to 6, further comprising: the rear end reinforcing plate (4), the upper portion and the rear end plate assembly (7) fixed connection of rear end reinforcing plate (4), the lower part of rear end reinforcing plate (4) with back longeron (6) fixed connection.

10. The rear lower body support assembly according to claim 9, wherein the rear end reinforcing plate (4) includes a fifth abutting surface (41), a third connecting portion (42) and a sixth abutting surface (43), the fifth abutting surface (41) is fixedly connected with the rear end plate assembly (7), the sixth abutting surface (43) is fixedly connected with the rear longitudinal beam (6), and the third connecting portion (42) extends obliquely forward from a bottom end of the fifth abutting surface (41) to the rear longitudinal beam (6) and is fixedly connected with a rear end of the sixth abutting surface (43).

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