CN218505995U - Crossbeam assembly of automobile body C ring, automobile body C ring structure assembly and vehicle - Google Patents

Abstract

The disclosure relates to a beam assembly of a C-ring of a vehicle body, a structural assembly of a C-ring of a vehicle body, and a vehicle. The beam assembly of a C-ring of a vehicle body includes a storage board and a beam body; the beam body extends along the left and right directions of the vehicle, and the The storage plate cover is arranged on the beam body, and the storage plate and the beam body jointly enclose at least two cavities arranged along the front and rear direction of the vehicle, and the cross sections of the cavities are closed sections. The beam assembly of the C-ring of the vehicle body increases the number of cavities and the cross-sectional area, which can effectively improve the torsional rigidity of the C-ring structure of the vehicle body, and will not occupy the trunk space or affect the use of the trunk space.

Description

The beam assembly of the C-ring of the body, the C-ring structure assembly of the body and the vehicle

technical field

The present disclosure relates to the technical field of vehicle manufacturing, in particular to a beam assembly of a C-ring of a vehicle body, a C-ring structure assembly of a vehicle body, and a vehicle.

Background technique

Due to the arrangement of battery packs in electric new energy vehicles, the torsional stiffness of the body is higher than that of ordinary fuel vehicles, and the C-ring frame structure of the body is the main means to improve the torsional stiffness of the body.

In the related art, the torsional rigidity of the vehicle body is improved by increasing the area of the closed cross-section of the beam assembly in the vertical direction of the vehicle. However, due to the limitation of the trunk space, the improvement of the torsional rigidity of the vehicle body is limited, and there is still space for the trunk. reduced problem.

Utility model content

The purpose of the present disclosure is to provide a beam assembly of a C-ring of a vehicle body, a C-ring structure assembly of a vehicle body and a vehicle, so as to solve the problem of limited improvement of the torsional rigidity of the vehicle body in related technologies.

In order to achieve the above object, the first aspect of the present disclosure provides a beam assembly of a C-ring of a vehicle body, including a storage board and a beam body;

The beam body extends along the left-right direction of the vehicle, the storage plate cover is arranged on the beam body, and the storage plate and the beam body together form at least two cavities arranged along the front-rear direction of the vehicle , the section of the cavity is a closed section.

Optionally, at least two recesses arranged along the front-rear direction of the vehicle are formed on the crossbeam body, the recesses are recessed toward a direction away from the storage board, at least two of the recesses and the storage board jointly enclose into at least two of the cavities.

Optionally, at least two protrusions arranged along the front-rear direction of the vehicle are formed on the storage plate, the protrusions protrude toward the direction away from the crossbeam body, and the protrusions and the recesses are one by one Correspondingly, each of the convex parts and its corresponding concave part jointly enclose the cavity.

Optionally, there is a convex surface between two adjacent concave parts, and a concave surface between two adjacent convex parts, and the convex surface is connected to the corresponding concave surface.

Optionally, the front end of the convex portion located at the front of the storage board has a first flange extending obliquely downward, and the front end of the concave portion located at the front of the beam body has a second flange extending obliquely downward. edge, the first flange overlaps with the second flange.

Optionally, the storage board includes a front board body and a rear board body formed at the rear end of the front board body, the convex part is located on the front board body, and the beam body is located below the front board body , the rear end of the recess located at the rear of the beam body has a third flange, and the third flange overlaps with the bottom surface of the rear plate body.

Optionally, the cross-sectional area of the cavity increases sequentially along a front-to-back direction.

Optionally, a first positioning portion is formed on the storage board, and a second positioning portion that cooperates with the first positioning portion is formed on the beam body.

Optionally, the first positioning part is a groove formed at the front of the storage board, and the second positioning part is a protrusion formed at the front of the beam body; or,

The first positioning part is a protrusion formed on the front of the storage board, and the second positioning part is a groove formed on the front of the beam body.

Optionally, the number of the first positioning portion and the second positioning portion are multiple and set in one-to-one correspondence, and the plurality of the first positioning portions and the plurality of the second positioning portions are all along the vehicle left and right interval settings.

Optionally, the storage board includes a front board body and a rear board body formed at the rear end of the front board body, the beam body is located below the front board body and together with the front board body encloses at least two The size of the front plate body in the front and rear direction of the vehicle is 200mm-300mm, the size of the rear plate body in the front and rear direction of the vehicle is 500mm-600mm, and the cross beam body is in the front and rear direction of the vehicle. The size in the direction is 200mm-300mm.

Optionally, there are two cavities, one of the two cavities has a dimension of 80mm-120mm in the front-rear direction of the vehicle, and a dimension of 40mm-60mm in the up-down direction of the vehicle ;

The other of the two cavities has a dimension of 60mm-80mm in the front-rear direction of the vehicle, and a dimension of 20mm-30mm in the up-down direction of the vehicle.

Optionally, the beam assembly further includes two connecting brackets oppositely arranged in the left-right direction of the vehicle, and the two connecting brackets are respectively connected to the two ends of the beam body in the left-right direction of the vehicle. The connection bracket is used to connect with the wheel housing.

The second aspect of the present disclosure also provides a C-ring structural assembly of the vehicle body, including two wheel housings, a bottom beam and the above-mentioned beam assembly of the C-ring of the vehicle body, which are arranged opposite to each other in the left-right direction of the vehicle;

The two ends of the beam assembly in the left and right direction of the vehicle are respectively connected to the upper parts of the two wheel covers, and the lower parts of the two wheel covers are respectively connected to the two ends of the bottom beam in the left and right direction of the vehicle so that the two wheel housings, the bottom beam and the cross beam assembly together form a ring frame structure.

The third aspect of the present disclosure also provides a vehicle, including the above-mentioned C-ring structural assembly of the vehicle body.

In the above technical solution, by covering the storage board on the beam body and forming at least two cavities, at least two closed sections are formed, and the number and area of closed sections are increased in the front and rear directions of the vehicle, which can avoid Due to the limitation of the trunk space in the up and down direction of the vehicle, the torsional rigidity of the C-ring structure of the vehicle body can be greatly improved without encroaching on the trunk space or affecting the use of the trunk space. The beam assembly of the C-ring of the vehicle body increases the number and area of closed sections, which can effectively improve the torsional rigidity of the C-ring structure of the vehicle body.

Other features and advantages of the present disclosure will be described in detail in the detailed description that follows.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present disclosure, and constitute a part of the description, together with the following specific embodiments, are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the attached picture:

Fig. 1 is a three-dimensional schematic diagram of a perspective view of a beam assembly of a C-ring of a vehicle body according to an embodiment of the present disclosure;

Fig. 2 is a bottom view of the beam assembly of the C-ring of the vehicle body according to an embodiment of the present disclosure;

FIG. 3 is a perspective view of another perspective view of the beam assembly of the C-ring of the vehicle body according to an embodiment of the present disclosure;

Fig. 4 is a partial enlarged view of the position A in Fig. 1 of the beam assembly of the C-ring of the vehicle body according to an embodiment of the present disclosure;

Fig. 5 is a schematic cross-sectional structure diagram of a beam assembly of a C-ring of the vehicle body according to an embodiment of the present disclosure;

Fig. 6 is a schematic structural view of a beam body according to an embodiment of the present disclosure;

Fig. 7 is a structural schematic diagram of a C-ring structural assembly of a vehicle body according to an embodiment of the present disclosure.

Explanation of reference signs

1. Storage board, 11. Front plate body, 12. Rear plate body, 13. Convex part, 14. First positioning part, 15. Recessed surface, 16. First flange;

2. The beam body, 21, the concave part, 22, the second positioning part, 23, the convex surface, 24, the second flange, 25, the third flange;

3. Connection bracket;

4. Bottom beam;

5. Wheel cover;

6. Cavity.

Detailed ways

Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

In this disclosure, unless stated otherwise, the orientation words used such as "up, down, left, right, front, rear" are generally relative to the normal driving state of the vehicle, specifically, when the vehicle When driving normally, the direction towards the front of the car is "front", the direction towards the rear is "rear", the direction towards the ceiling is "up", the direction towards the floor is "down", the direction towards the left wheel is "left", and the direction towards the left wheel is "left". The direction of the right wheel is "right".

In addition, the "cross member" in this indication means the beam extended in the vehicle left-right direction, and all the "longitudinal members" mean the beam extended in the vehicle front-rear direction. "Front collision" in the present disclosure refers to a situation in which the front of the vehicle is hit, and "side collision" refers to a situation in which the side of the vehicle is hit. In addition, in the absence of other special explanations, the meanings of terms such as "dash panel", "floor panel", and "sill inner panel" involved in the various embodiments of the present disclosure are their commonly known meanings in the art.

In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In addition, terms such as "connected", "mounted", "connected", "fixed", etc. are to be interpreted broadly in the absence of special instructions and limitations, which can be achieved by non-detachable means such as welding, bolts, etc. The way of disassembly, or the way of integral molding such as molding can be implemented in a way known to those skilled in the art. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

As shown in FIGS. 1-6 , an aspect of the present disclosure provides a beam assembly of a C-ring of a vehicle body, including a storage board 1 and a beam body 2 .

The crossbeam body 2 extends along the left and right direction of the vehicle, and the storage board 1 is covered on the crossbeam body 2, and the storage board 1 and the crossbeam body 2 together form at least two cavities 6 arranged along the front and rear directions of the vehicle. The section is a closed section.

Among them, the storage board 1 is mainly used in the body structure of the sedan, and is an important component part. It is usually located on the rear floor of the body, and can play the role of installing the trunk hinge and other structures, and can also protect the rear passengers. And play a role in improving the torsional rigidity of the vehicle.

Wherein, in this embodiment, the storage board 1 is arranged horizontally and is located above the beam body 2 , the beam body 2 is arranged horizontally, and the beam body 2 is used to connect with parts in the left and right directions of the vehicle.

Wherein, after the storage board 1 and the beam body 2 are connected together, the entire beam assembly constituting the C-ring structure of the vehicle body can be formed.

Wherein, there may be multiple joints between the storage board 1 and the crossbeam body 2, so that at least two cavities 6 may be formed, thereby increasing the connection strength and rigidity of the crossbeam assembly itself, so that the body C ring formed by the crossbeam assembly The torsional rigidity of the structure is increased.

In addition, the storage board 1 and the beam body 2 jointly form at least two cavities 6, forming at least two closed-section structures, thereby increasing the number and area of closed sections in the front-rear direction of the vehicle, thereby also improving the composition. Torsional stiffness of body C-ring structure.

In the above technical solution, by covering the storage board 1 on the beam body 2 and forming at least two cavities 6, at least two closed-section structures are formed, and the number of closed sections is increased in the front-rear direction of the vehicle and The area can not be restricted by the trunk space in the up and down direction of the vehicle, so that the torsional rigidity of the C-ring structure of the body can be greatly improved, and the trunk space will not be invaded, and the use of the trunk space will not be affected. The beam assembly of the C-ring of the vehicle body increases the number and area of closed sections, which can effectively improve the torsional rigidity of the C-ring structure of the vehicle body.

Optionally, in another embodiment of the present disclosure, at least two recesses 21 arranged along the front-rear direction of the vehicle are formed on the beam body 2 , the recesses 21 are recessed toward the direction away from the storage board 1 , and the at least two recesses 21 At least two cavities 6 are enclosed together with the storage board 1 .

Wherein, in this embodiment, the side of the recess 21 facing the storage board 1 and the position of the storage board 1 facing the recess 21 can jointly form a cavity 6, wherein the position where the beam body 2 is not recessed to form the recess 21 is connected to the bottom surface of the storage board 1 , so that each recess 21 together with the shelf 1 encloses a cavity 6, so that the section of the cavity 6 formed is a closed section.

The concave portion 21 is a structure formed by the cross member body 2 being sunken downward along the vertical direction of the vehicle, which can increase the area of the formed cavity 6 and thereby improve the torsional rigidity of the formed C-ring structure of the vehicle body.

Optionally, in one embodiment of the present disclosure, at least two protrusions 13 arranged along the front and rear direction of the vehicle are formed on the storage board 1 , the protrusions 13 protrude toward the direction away from the crossbeam body 2 , and the protrusions 13 In one-to-one correspondence with the concave portions 21 , each convex portion 13 and its corresponding concave portion 21 jointly enclose a cavity 6 .

Wherein, in this embodiment, the convex portion 13 and the concave portion 21 are disposed opposite to each other, and the cavity 6 jointly formed by the convex portion 13 and the concave portion 21 may be in the shape of a “mouth”. In some examples, the convex portion 13 is a structure in which the storage board 1 protrudes upward along the up-down direction of the vehicle, forming an outwardly convex structure.

The cavity 6 jointly formed by the protruding part 13 and the concave part 21 can effectively increase the area of the closed section of the cavity 6, thereby improving the torsional rigidity of the composed C-ring structure of the vehicle body.

Optionally, the length of the protrusion 13 in the front-rear direction of the vehicle is equal to the length of the recess 21 in the front-rear direction of the vehicle, so that each protrusion 13 and each recess 21 can form a cavity 6 with a complete closed section.

Optionally, in one embodiment of the present disclosure, there is a convex surface 23 between two adjacent concave parts 21, a concave surface 15 is formed between two adjacent convex parts 13, and the convex surface 23 and the corresponding concave surface 15 connected.

Wherein, in this embodiment, each convex surface 23 and the concave surface 15 can be welded and fixed, through the connection of the convex surface 23 and the concave surface 15, the structure of multiple cavities 6 can be formed, and the storage board 1 can be added at the same time. The strength of the connection with the beam body 2 improves the torsional rigidity of the vehicle body. In some examples, there is a convex surface 23 between two adjacent concave parts 21 , and there is a concave surface 15 between two adjacent convex parts 13 .

It can be understood that when the storage board 1 and the beam body 2 are manufactured and formed, the convex portion 13 and the concave portion 21 can be stamped and formed according to the design requirements, and then the middle position of the convex portion 13 and the concave portion 21 can be formed by extrusion equipment. Squeeze close together for welding. Of course, the storage board 1 and the beam body 2 can also be manufactured into a structure that needs to be connected during stamping and forming, and can be directly welded.

Wherein, the raised height of the convex portion 13 can be set as required, and the height of the recessed portion 21 can also be set as required.

Optionally, in other embodiments of the present disclosure, the convex parts 13 and the concave parts 21 are alternately arranged, wherein the convex parts 13 and the part of the beam body 2 jointly form the cavity 6, and the concave parts 21 and the storage board 1 jointly form the cavity 6 . With such a setting, other parts can be avoided as required, thereby improving flexibility.

Optionally, in one embodiment of the present disclosure, the cross section of the cavity 6 may be in the shape of a "mouth". By setting in this way, the torsional rigidity of the vehicle body can be better improved.

Optionally, in one embodiment of the present disclosure, the front end of the convex portion 13 located at the front of the storage board 1 has a first flange 16 extending obliquely downward, and the front end of the concave portion 21 located at the front of the beam body 2 has an inclined The second flange 24 extending downwards overlaps the first flange 16 and the second flange 24 .

Wherein, in this embodiment, the convex portion 13 located at the front of the storage panel 1 refers to the frontmost convex portion 13 of the storage panel 1 in the front-rear direction of the vehicle. The recess 21 located at the front of the beam body 2 refers to a recess 21 at the front end of the beam body 2 in the front-rear direction of the vehicle, where the first flange 16 and the second flange 24 are inclined downward to make room for the passenger compartment. .

Optionally, in one embodiment of the present disclosure, the storage board 1 includes a front board body 11 and a rear board body 12 formed at the rear end of the front board body 11, the convex portion 13 is located on the front board body 11, and the beam body 2 is located on the front Below the plate body 11 , there is a third flange 25 at the rear end of the recess 21 located at the rear of the beam body 2 , and the third flange 25 overlaps the bottom surface of the rear plate body 12 .

Wherein, in this embodiment, the front plate body 11 can be connected with the beam body 2, so that the front plate body 11 can form a cavity 6 structure with the beam body 2, and the rear plate body 12 can be used to connect structures such as trunk hinges. It should be noted that the upper surface of the front plate body 11 can also be used to connect structures such as trunk hinges, which can be selected according to different vehicle models. The third flange 25 is overlapped with the bottom surface of the rear plate body, so that the cross section of the cavity 6 can be a closed cross section.

Optionally, the area of the cross-section of the cavity 6 increases sequentially along the direction from front to back. Through such a design, the cross-sectional area of the cavity 6 can be increased as much as possible in the effective space, and at the same time, the usable space of the luggage case will not be compressed, and the positions of other parts will not be occupied.

Optionally, in one embodiment of the present disclosure, a first positioning portion 14 is formed on the storage board 1 , and a second positioning portion 22 that cooperates with the first positioning portion 14 is formed on the beam body 2 .

Wherein, in this embodiment, the first positioning portion 14 and the second positioning portion 22 can be fixed by welding. The first positioning part 14 and the second positioning part 22 can facilitate the connection and positioning, such arrangement can facilitate the assembly and positioning of the storage board 1 and the beam body 2, and then connect.

Optionally, in one embodiment of the present disclosure, the first positioning portion 14 is a groove formed at the front of the storage board 1 , and the second positioning portion 22 is a protrusion formed at the front of the beam body 2 .

Alternatively, the first positioning portion 14 is a protrusion formed at the front of the shelf 1 , and the second positioning portion 22 is a groove formed at the front of the beam body 2 .

Wherein, in this embodiment, when the second positioning portion 22 is a groove, the width and depth of the second positioning portion 22 are greater than the width and depth of the first positioning portion 14, thereby facilitating the first positioning portion 14 to be placed in the second positioning In the part 22, the positioning function can be realized. When the second positioning portion 22 is a protrusion, the width and depth of the first positioning portion 14 are larger than the width and depth of the second positioning portion 22, thereby facilitating the placement of the second positioning portion 22 in the first positioning portion 14, enabling positioning effect.

Wherein, in some examples, the contact surfaces of the second positioning portion 22 and the first positioning portion 14 can be fixed by welding.

It can be understood that when the storage board 1 and the beam body 2 are assembled, the first positioning part 14 is placed in the second positioning part 22 and then welded. Such arrangement can facilitate the assembly and positioning of the storage board 1 and the beam body 2 and improve assembly efficiency.

In some examples, for the storage board with the first flange 16, the first positioning portion 14 can be located on the first flange 16, and for the beam body 2 with the second flange 24, the second flange 24 may be located on the second flange 24 .

Optionally, in an embodiment of the present disclosure, the number of first positioning parts 14 and the number of second positioning parts 22 are multiple and correspond to one-to-one, and the multiple first positioning parts 14 and the multiple second positioning parts 22 They are all arranged at intervals along the left and right directions of the vehicle.

Wherein, in this embodiment, each first positioning portion 14 can be correspondingly inserted into each second positioning portion 22, so that the positioning effect can be improved, and simultaneously the plurality of first positioning portions 14 and the plurality of second positioning portions 22 connection, which can improve the connection strength.

Optionally, in one embodiment of the present disclosure, the beam body 2 is located below the front panel body 11 and together with the front panel body 11 forms at least two cavities 6 , the front panel body 11 is in the front-rear direction of the vehicle. The size is 200mm-300mm, the size of the rear plate body 12 is 500mm-600mm in the front-rear direction of the vehicle, and the size of the beam body 2 in the front-rear direction of the vehicle is 200mm-300mm. Such arrangement increases the lengths of the front plate body 11 and the beam body 2 in the front-rear direction of the vehicle, so that the cross-sectional area of the cavity 6 is increased again, which can effectively improve the torsional rigidity of the vehicle body.

Optionally, in one embodiment of the present disclosure, the number of cavities 6 is two, and the size of one cavity 6 in the two cavities 6 is 80mm-120mm in the front-rear direction of the vehicle. The size in the up and down direction is 40mm-60mm. The size of the other cavity 6 among the two cavities 6 is 60mm-80mm in the front-rear direction of the vehicle, and 20mm-30mm in the up-down direction of the vehicle. Through such setting, the torsional rigidity of the vehicle body can be effectively improved.

Optionally, in an embodiment of the present disclosure, there are two convex parts 13 and two concave parts 21, one of the convex parts 13 and one of the concave parts 21 together form a cavity 6, and the other convex part 13 The portion 13 together with the further recess 21 forms a further cavity 6 .

Optionally, in one embodiment of the present disclosure, the beam assembly further includes two connecting brackets 3 oppositely arranged in the left-right direction of the vehicle, and the two connecting brackets 3 are respectively connected to the beam body 2 in the left-right direction of the vehicle. The two ends of the connecting bracket 3 are used to connect with the wheel cover 5.

Wherein, in this embodiment, the two connecting brackets 3 can support the beam body 2 and facilitate the connection with other parts. In some examples, the two connecting brackets 3 are respectively welded and fixed to both ends of the beam body 2 in the left-right direction of the vehicle.

As shown in Figure 7, the second aspect of the present disclosure also provides a vehicle body C-ring structure assembly, including two wheel housings 5, bottom beams 4, and the above-mentioned cross beams of the vehicle body C-ring that are arranged opposite to each other in the left-right direction of the vehicle. Assembly.

The two ends of the beam assembly in the left-right direction of the vehicle are respectively connected to the upper parts of the two wheel housings 5, and the lower parts of the two wheel housings 5 are respectively connected to the two ends of the bottom beam 4 in the left-right direction of the vehicle, so that the two The wheel housing 5, the bottom beam 4 and the beam assembly together form a ring frame structure.

Among them, the two wheel covers 5, the bottom beam 4 and the beam assembly together form a ring frame structure, that is, a C-ring structure, which can effectively increase the torsional rigidity of the vehicle body and meet the torsional rigidity requirements of electric new energy vehicles. In some examples, the above two connecting brackets 3 are respectively connected to the two wheel covers 5 .

The third aspect of the present disclosure also provides a vehicle, including the above-mentioned C-ring structural assembly of the vehicle body.

The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure. These simple modifications all belong to the protection scope of the present disclosure.

In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner if there is no contradiction. The combination method will not be described separately.

In addition, various implementations of the present disclosure can be combined arbitrarily, as long as they do not violate the idea of the present disclosure, they should also be regarded as the content disclosed in the present disclosure.

Claims (15)

1. A beam assembly of a C-ring of a vehicle body is characterized by comprising an object placing plate and a beam body;

the transverse beam body extends along the left and right directions of a vehicle, the object placing plate covers the transverse beam body, the object placing plate and the transverse beam body jointly enclose at least two cavities which are distributed along the front and back directions of the vehicle, and the cross sections of the cavities are closed cross sections.

2. The cross beam assembly of a C-ring of a vehicle body as claimed in claim 1, wherein the cross beam body is formed with at least two recesses arranged along a front-rear direction of the vehicle, the recesses being recessed toward a direction away from the shelf, the at least two recesses and the shelf together enclosing at least two of the cavities.

3. The cross beam assembly of the C-ring of the vehicle body as claimed in claim 2, wherein at least two protrusions are formed on the shelf and arranged along the front-rear direction of the vehicle, the protrusions protrude in a direction away from the cross beam body, the protrusions and the recesses correspond one to one, and each protrusion and the corresponding recess together enclose the cavity.

4. The cross-member assembly for the C-ring of the vehicle body as claimed in claim 3, wherein a convex surface is provided between two adjacent concave portions, a concave surface is provided between two adjacent convex portions, and the convex surface is connected with the corresponding concave surface.

5. The cross-member assembly for a C-ring of a vehicle body of claim 3, wherein a front end of the convex portion of the front portion of the shelf has a first flange extending obliquely downward, and a front end of the concave portion of the front portion of the cross-member body has a second flange extending obliquely downward, the first flange overlapping the second flange.

6. The cross beam assembly of the C-ring of the vehicle body as claimed in claim 3, wherein the storage plate comprises a front plate body and a rear plate body formed at the rear end of the front plate body, the convex portion is located on the front plate body, the cross beam body is located below the front plate body, a third flange is arranged at the rear end of the concave portion located at the rear portion of the cross beam body, and the third flange is in lap joint with the bottom surface of the rear plate body.

7. The cross-member assembly of a C-ring of a vehicle body of claim 1, wherein the cross-section of the cavity increases in area in a direction from front to back.

8. The cross member assembly of the C-ring of the vehicle body according to any one of claims 1 to 7, wherein a first positioning portion is formed on the shelf, and a second positioning portion that engages with the first positioning portion is formed on the cross member body.

9. The cross-member assembly of a vehicle body C-ring according to claim 8, wherein the first positioning portion is a groove formed in a front portion of the parcel plate, and the second positioning portion is a projection formed in a front portion of the cross-member body; or,

the first positioning part is a bulge formed at the front part of the object placing plate, and the second positioning part is a groove formed at the front part of the beam body.

10. The cross member assembly of the C-ring of the vehicle body according to claim 8, wherein the first positioning portion and the second positioning portion are provided in plural numbers and in one-to-one correspondence, and the first positioning portion and the second positioning portion are provided at intervals in a left-right direction of the vehicle.

11. The cross beam assembly of the C-ring of the vehicle body as claimed in any one of claims 1 to 5, wherein the storage plate comprises a front plate body and a rear plate body formed at the rear end of the front plate body, the cross beam body is located below the front plate body and encloses at least two cavities together with the front plate body, the front plate body has a dimension in a front-rear direction of the vehicle of 200mm to 300mm, the rear plate body has a dimension in the front-rear direction of the vehicle of 500mm to 600mm, and the cross beam body has a dimension in the front-rear direction of the vehicle of 200mm to 300mm.

12. The cross-member assembly of a C-ring for a vehicle body according to any one of claims 1 to 7, wherein the number of said cavities is two, and one of the two cavities has a dimension of 80mm to 120mm in a front-rear direction of the vehicle and a dimension of 40mm to 60mm in an up-down direction of the vehicle;

the other of the two cavities has a dimension of 60mm to 80mm in the front-rear direction of the vehicle and a dimension of 20mm to 30mm in the up-down direction of the vehicle.

13. The cross beam assembly of the C-ring of the vehicle body according to any one of claims 1 to 7, further comprising two connecting brackets oppositely arranged in the left-right direction of the vehicle, the two connecting brackets being respectively connected to both ends of the cross beam body in the left-right direction of the vehicle, the connecting brackets being used for connecting with wheel covers.

14. A vehicle body C-ring structure assembly, which is characterized by comprising two wheel covers and a bottom beam which are oppositely arranged in the left-right direction of a vehicle, and a cross beam assembly of a vehicle body C-ring according to any one of claims 1-13;

the two ends of the cross beam assembly in the left-right direction of the vehicle are respectively connected with the upper parts of the two wheel covers, and the lower parts of the two wheel covers are respectively connected with the two ends of the bottom beam in the left-right direction of the vehicle, so that the two wheel covers, the bottom beam and the cross beam assembly jointly form a ring frame structure.

15. A vehicle comprising the body C-ring structure assembly of claim 14.

Images