CN218505983U - Vehicle body tail frame structure and vehicle - Google Patents

Abstract

The present disclosure relates to a vehicle body rear frame structure and a vehicle, and this vehicle body rear frame structure includes: the two C-column assemblies, the rear floor beam assembly, the coat and hat rack assembly, the rear coaming cross beam and the two D-column bodies; the coat and hat rack assembly is connected with the upper portions of the two D column bodies and the middle portions of the two C column assemblies at the two ends of the left and right directions of the vehicle respectively, the lower portions of the two D column bodies are connected with the two ends of the rear coaming beam at the two ends of the left and right directions of the vehicle respectively, the lower portions of the two C column assemblies are connected with the two ends of the rear floor beam assembly at the two ends of the left and right directions of the vehicle respectively, and the upper portions of the two C column assemblies are used for being connected with the top cover beam respectively. The double-ring structure formed by the frame structure at the tail part of the vehicle body can improve the local mode and the torsional rigidity of the hat rack assembly and the rear windshield, can also improve the rigidity of the space of the trunk and can improve the integral vertical bending mode of the vehicle body.

Description

Vehicle body tail frame structure and vehicle

Technical Field

The disclosure relates to the technical field of vehicle manufacturing, in particular to a vehicle tail frame structure and a vehicle.

Background

With the gradual increase of the requirements of the electric new energy automobile on driving control dynamics, the requirements on the torsional rigidity of the automobile body structure are higher and higher.

The connection between the rear windshield of the sedan car and the tail of the car body in the related technology is weak, so that the torsional rigidity of the rear windshield is weak, and the local mode of the rear windshield is influenced, so that the torsional rigidity of the trunk at the tail of the car body is influenced, and the connection strength of the trunk is further influenced.

SUMMERY OF THE UTILITY MODEL

An object of the present disclosure is to provide a vehicle body rear frame structure and a vehicle, so as to solve the problems in the related art described above.

In order to achieve the above object, an aspect of the present disclosure provides a vehicle body rear frame structure including two C-pillar assemblies, a rear floor beam assembly, a coat and hat frame assembly, a rear apron cross member, and two D-pillar bodies;

the two ends of the coat and hat rack assembly in the left and right direction of the vehicle are respectively connected with the upper parts of the two D column bodies and the middle parts of the two C column assemblies, the lower parts of the two D column bodies are respectively connected with the two ends of the rear coaming cross beam in the left and right direction of the vehicle, the lower parts of the two C column assemblies are respectively connected with the two ends of the rear floor beam assembly in the left and right direction of the vehicle, and the upper parts of the two C column assemblies are respectively used for being connected with the top cover cross beam;

the two C-column assemblies, the coat and hat rack assembly and the rear floor beam assembly form a first annular frame structure together;

the rear floor beam assembly, the rear coaming cross beam, the two D-shaped column bodies and the hat and coat rack assembly jointly surround a luggage box space for containing articles, and the two D-shaped column bodies, the rear coaming cross beam and the hat and coat rack assembly jointly form a second annular frame structure.

Optionally, the C-pillar assembly includes an edge beam, a pillar, and a C-pillar inner panel, the lower portion of the edge beam is connected to the upper portion of the pillar, the upper portion of the edge beam is used for being connected to the top cover beam, the upper portion of the C-pillar inner panel is connected to the lower portion of the pillar, the pillar is connected to the coat and hat rack assembly and the upper portion of the D-pillar body, and the lower portion of the C-pillar inner panel is connected to the rear floor beam assembly.

Optionally, the C post inner panel structure is "people" font structure, the lower part of C post inner panel has first connecting portion and second connecting portion, set up first connecting piece on the first connecting portion, be provided with the second connecting piece on the second connecting portion, the lower part of first connecting piece is formed with first turn-ups, the lower part of second connecting piece is formed with the second turn-ups, first turn-ups with the second turn-ups is respectively the back floor beam subassembly is connected, first connecting piece with the second connecting piece sets up along the fore-and-aft direction of vehicle, the upper portion of C post inner panel is formed with the overlap edge, the overlap edge overlap in the lower part of stand.

Optionally, the hatrack assembly comprises a hatrack rear cross beam, a hatrack partition plate and a hatrack front cross beam, the hatrack partition plate is connected between the hatrack rear cross beam and the hatrack front cross beam, two ends of the hatrack rear cross beam in the left-right direction of the vehicle and two ends of the hatrack front cross beam in the left-right direction of the vehicle are respectively connected with the two columns, and two ends of the hatrack rear cross beam in the left-right direction of the vehicle are connected with the upper parts of the two D-column bodies.

Optionally, the rear cross member of the hat rack is located above a connection of the second connector and the rear floor beam assembly, so that the rear cross member of the hat rack, the second connector and the rear floor beam assembly jointly form the first annular frame structure, and the front cross member of the hat rack is located above a connection of the first connector and the rear floor beam assembly.

Optionally, the vehicle body rear frame structure further includes two rear wheel covers which are oppositely arranged in the left and right directions of the vehicle, the upper portions of the rear wheel covers are respectively connected with the lower portions of the two corresponding stand columns, the C column inner plate and the rear floor beam assembly are respectively connected with the inner side walls of the rear wheel covers, so that the stress of the rear wheel covers can be transmitted to the first annular frame structure and the second annular frame structure.

Optionally, the C-pillar assembly further includes a C-pillar outer panel, an upper portion of the C-pillar outer panel is connected to the pillar, and a lower portion of the C-pillar outer panel is connected to an outer wall of an upper portion of the rear wheel housing corresponding thereto.

Optionally, both ends of the back panel cross member in the left-right direction of the vehicle are respectively connected to both ends of the back panel beam assembly in the left-right direction of the vehicle, so that the first annular frame structure and the second annular frame structure form a whole.

Optionally, the rear floor beam assembly includes a rear floor cross beam and two rear longitudinal beams oppositely arranged in the left-right direction of the vehicle, two ends of the rear floor cross beam in the left-right direction of the vehicle are respectively connected to the two rear longitudinal beams, rear portions of the two rear longitudinal beams are respectively connected to two ends of the rear coaming cross beam in the left-right direction of the vehicle, and front portions of the two rear longitudinal beams are respectively connected to lower portions of the two C-column assemblies.

A second aspect of the present disclosure also provides a vehicle including the vehicle body rear frame structure described above.

According to the technical scheme, the first annular frame can support the hatrack assembly, so that the local mode and the torsional rigidity of the hatrack assembly and the rear windshield are improved. The rigidity of the space of the trunk can be improved through the second annular frame, so that the load of the tail part of the vehicle body can be well supported, the overall vertical bending mode of the vehicle body can be improved, the torsional rigidity of the tail part of the vehicle body is improved, and the mounting strength of the trunk cover can be improved through the strength improvement of the coat and hat rack assembly. The first annular frame and the second annular frame share the coat and hat rack assembly, so that the first annular frame and the second annular frame form a double-ring structure and can bear force jointly, the mode and the strength of the whole tail part of the automobile body are improved, and the collision performance of the tail part of the automobile body can also be improved.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a perspective view of an aft frame structure of an embodiment of the present disclosure;

fig. 2 is a structural schematic view from one perspective of the inside of the vehicle body rear frame structure of an embodiment of the present disclosure.

Description of the reference numerals

1. A D column body;

2. a back panel beam;

3. a hat rack assembly 31, a hat rack front beam 32, a hat rack partition plate 33 and a hat rack rear beam;

4. the C column assembly comprises a C column assembly 41, a boundary beam 42, a column 43, a C column inner plate 44, a C column outer plate 45, a first connecting piece 46 and a second connecting piece;

5. rear floor beam assembly, 51, rear longitudinal beam, 52, rear floor cross beam;

6. and a rear wheel cover.

Detailed Description

The following detailed description of the embodiments of the disclosure refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise stated, the terms of orientation such as "up, down, left, right, front, and rear" are used with respect to the normal running state of the vehicle, and specifically, when the vehicle is running normally, the direction toward the head is "front", the direction toward the tail is "rear", the direction toward the ceiling is "up", the direction toward the floor is "down", the direction toward the left wheel is "left", and the direction toward the right wheel is "right".

In addition, the "cross member" in the present disclosure means a beam extending in the vehicle left-right direction, and all the "side members" means beams extending in the vehicle front-rear direction. In the present disclosure, "frontal impact" refers to a situation in which the front portion of the vehicle is subjected to an impact, and "side impact" refers to a situation in which the side surface of the vehicle is subjected to an impact. In addition, the terms "dash panel", "floor panel", "rocker inner panel" and the like referred to in the embodiments of the present disclosure are, without other specific explanations, the meanings of which are well known in the art.

Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In addition, without specific description or limitation, terms such as "connect", "mount", "connect", "fix", and the like may be broadly interpreted and may be implemented in a non-detachable manner such as welding, a detachable manner such as bolts, or an integrally formed manner such as molding, which are well known to those skilled in the art, and specific meanings of the terms in the present disclosure may be understood by those skilled in the art according to specific situations.

As shown in fig. 1 and 2, an aspect of the present disclosure provides a vehicle body rear frame structure including two C-pillar assemblies 4, a rear floor beam assembly 5, a hatrack assembly 3, a quarter cross member 2, and two D-pillar bodies 1.

The two ends of the coat and hat rack assembly 3 in the left and right directions of the vehicle are respectively connected with the upper parts of the two D column bodies 1 and the middle parts of the two C column assemblies 4, the lower parts of the two D column bodies 1 are respectively connected with the two ends of the rear enclosing plate cross beam 2 in the left and right directions of the vehicle, the lower parts of the two C column assemblies 4 are respectively connected with the two ends of the rear floor beam assembly 5 in the left and right directions of the vehicle, and the upper parts of the two C column assemblies 4 are respectively used for being connected with the top cover cross beam.

Wherein, the two C-column assemblies 4, the hatrack assembly 3 and the rear floor beam assembly 5 jointly form a first annular frame structure.

The luggage box space that is used for holding article is enclosed into jointly to back floor beam subassembly 5, back boarding crossbeam 2, two D post bodies 1 and hat rack subassembly 3, and two D post bodies 1, back boarding crossbeam 2 and hat rack subassembly 3 constitute second annular frame structure jointly.

The coat and hat rack assembly 3 can separate a passenger compartment and a luggage box space, and the coat and hat rack assembly 3 is connected with the two C-column assemblies 4, so that the two C-column assemblies 4, the coat and hat rack assembly 3 and the rear floor beam assembly 5 can jointly form a first annular frame structure, and the torsional rigidity of the coat and hat rack assembly 3 can be improved.

Wherein, two D post bodies 1 are as the bearing structure of the opening part in suitcase space, and D post body 1 is an overall structure, and its structural strength itself is high, can effectively promote the structural strength and the whole car mode of automobile body afterbody. Wherein, the upper portion of back panel crossbeam 2, the rear portion of two D post bodies 1 and hat rack subassembly 3 enclose into the opening in suitcase space jointly for second annular frame structure is located the opening in suitcase space, can improve the torsional rigidity in suitcase space department. Wherein the coat and hat rack assembly 3 may be used for mounting a trunk lid.

Wherein, first annular frame structure and second annular frame structure all contain hatrack subassembly 3 for first annular frame structure and second annular frame structure can be whole atress.

It will be appreciated that when the first endless frame structure is stressed it is possible to distribute part of the stress to the second endless frame structure, and when the second endless frame structure is stressed it is possible to distribute part of the stress to the first endless frame structure, thereby increasing the torsional stiffness at the hatrack assembly 3, at the rear windscreen and at the trunk space, improving the modal performance of the local and the entire vehicle.

In the above technical solution, the first ring frame formed can support the hatrack assembly 3, thereby improving the local mode and torsional rigidity of the hatrack assembly 3 and the rear windshield. The rigidity of the space of the trunk can be improved through the second annular frame, so that the load at the tail of the vehicle body can be well supported, the integral vertical bending mode of the vehicle body can be improved, the torsional rigidity of the tail of the vehicle body is improved, and the mounting strength of the trunk cover can be increased due to the improvement of the strength of the hat and coat stand component 3. The first annular frame and the second annular frame share the coat and hat rack assembly 3, so that the first annular frame and the second annular frame form a double-ring structure and can bear force jointly, the mode and the strength of the whole tail part of the automobile body are improved, and the collision performance of the tail part of the automobile body can also be improved.

Optionally, in an embodiment of the present disclosure, the C-pillar assembly 4 includes a side beam 41, a pillar 42, and a C-pillar inner panel 43, a lower portion of the side beam 41 is connected to an upper portion of the pillar 42, an upper portion of the side beam 41 is used for being connected to the roof rail, an upper portion of the C-pillar inner panel 43 is connected to a lower portion of the pillar 42, the pillar 42 is connected to the hatrack assembly 3 and an upper portion of the D-pillar body 1, and a lower portion of the C-pillar inner panel 43 is connected to the rear floor beam assembly 5.

In the present embodiment, the upper portion of the side member 41 is used to connect to the roof rail, so that the rear windshield can be mounted. In some examples, the side beams 41 are angled obliquely upward to form the rear of the car. The upright column 42 serves as a middle part, the upright column 42 is connected with the hat rack assembly 3, and meanwhile the upright column 42 is connected with the edge beam 41 and the D column body 1, so that the hat rack assembly 3, the edge beam 41 and the D column body 1 are connected together, and the strength of a vehicle body is improved. In some examples, the middle portion of the upright 42 is connected with the hatrack assembly 3 and the upper portion of the D-pillar body 1, respectively, wherein the upper portion of the D-pillar body 1 is connected with one side edge of the middle portion of the upright 42, and the hatrack assembly 3 is connected with the inward surface of the middle portion of the upright 42.

It will be appreciated that the C-pillar inner panel 43 connects the pillar 42 with the rear floor beam assembly 5, so that the hatrack assembly 3, the pillar 42, the C-pillar inner panel 43, and the rear floor beam assembly 5 constitute a first ring frame structure, achieving reinforcement of the strength of the hatrack assembly 3.

Through so setting up can conveniently be connected with D post body 1, hat rack subassembly 3 and back floor beam subassembly 5 to can conveniently form first ring frame structure.

Optionally, in other embodiments of the present disclosure, the C-pillar assembly 4 includes a C-pillar body, an upper portion of the C-pillar body is used for being connected with the roof rail, a lower portion of the C-pillar body is used for being connected with the rear floor beam assembly 5, and a middle portion of the C-pillar body is connected with the hatrack assembly 3 and the upper portion of the D-pillar body 1.

Optionally, in an embodiment of the present disclosure, the C-pillar inner panel 43 is configured as a "herringbone" structure, the lower portion of the C-pillar inner panel 43 has a first connecting portion and a second connecting portion, the first connecting portion is provided with a first connecting member 45, the second connecting portion is provided with a second connecting member 46, the lower portion of the first connecting member 45 is formed with a first flange, the lower portion of the second connecting member 46 is formed with a second flange, the first flange and the second flange are respectively connected to the rear floor beam assembly 5, the first connecting member 45 and the second connecting member 46 are provided along the front-rear direction of the vehicle, the upper portion of the C-pillar inner panel 43 is formed with a joint edge, and the joint edge is jointed to the lower portion of the pillar 42.

In the present embodiment, the upper portion of the C-pillar inner panel 43 is joined to the lower portion of the pillar 42 by a joint, and then fixed by welding, thereby improving the connection strength between the upper portion of the C-pillar inner panel 43 and the lower portion of the pillar 42.

In the present embodiment, the first connecting portion and the second connecting portion are respectively inclined forward and backward in the front-rear direction of the vehicle, so that the first connecting portion and the second connecting portion constitute a herringbone structure. The C column inner plate 43 with the herringbone structure can realize connection and fixation of two point positions, so that the connection strength of the C column inner plate 43 and the rear floor beam assembly 5 can be improved, and the driving control performance can be improved.

In the present embodiment, the upper portion of the first connector 45 is overlapped with the first connection portion and can be fixed by welding, and the upper portion of the second connector 46 is overlapped with the second connection portion and can be fixed by welding. The coupling strength with the rear floor beam assembly 5 can be improved by the first coupling member 45 and the second coupling member 46. The first flange of the first connecting member 45 can be attached to the front surface of the rear floor beam assembly 5 and then fixed by welding, and the second flange of the second connecting member 46 can be attached to the rear surface of the rear floor beam assembly 5 and fixed by welding.

Alternatively, in another embodiment, the C-pillar inner panel 43 may be a vertical panel, an upper portion of the C-pillar inner panel 43 is directly connected to a lower portion of the pillar 42, and a lower portion of the C-pillar inner panel 43 is directly connected to the rear floor beam assembly 5.

Alternatively, in one embodiment of the present disclosure, the hatrack assembly 3 includes a hatrack rear cross member 33, a hatrack partition plate 32, and a hatrack front cross member 31, the hatrack partition plate 32 is connected between the hatrack rear cross member 33 and the hatrack front cross member 31, both ends of the hatrack rear cross member 33 in the left-right direction of the vehicle and both ends of the hatrack front cross member 31 in the left-right direction of the vehicle are respectively connected with the two pillars 42, and both ends of the hatrack rear cross member 33 in the left-right direction of the vehicle are connected with upper portions of the two D-pillar bodies 1.

In the present embodiment, the front hat rack cross member 31, the partition plate 32, and the rear hat rack cross member 33 are sequentially disposed along the front-rear direction of the vehicle, so that the front hat rack cross member 31 is used to contact with the rear seats, the partition plate 32 is mainly used to mount the trunk lid, and the like, and the rear hat rack cross member 33 mainly plays a role in enhancing the strength and torsional rigidity of the vehicle body and is used to mount the rear windshield.

The first ring-shaped frame structure is mainly composed of a hat rack rear cross beam 33, a column 42, a C-column inner plate 43 and a rear floor beam assembly 5, and the second ring-shaped frame structure is mainly composed of the hat rack rear cross beam 33, a D-column body 1 and a back panel cross beam 2. The coat and hat rack rear cross beam 33 is mainly used as a stress point and used for improving the strength of the coat and hat rack partition plate 32, so that the strength of the mounting point of the trunk cover is improved, the abnormal sound probability generated by the trunk cover can be reduced, and the NVH performance of the vehicle is improved. Meanwhile, the coat and hat stand rear cross beam 33 serves as a joint of the rear windshield, so that the torsional rigidity of the rear windshield is improved. The front cross beam 31 of the hat rack is connected with the upright post 42, so that the torsional rigidity and the mode of the vehicle body can be improved, the durability can be improved, and the strength of a mounting point of the rear suspension can be improved.

Optionally, in an embodiment of the present disclosure, the hatrack rear cross beam 33 is located above the connection between the second connecting member 46 and the rear floor beam assembly 5, so that the hatrack rear cross beam 33, the second connecting member 46 and the rear floor beam assembly 5 jointly form a first ring frame structure, and the hatrack front cross beam 31 is located above the connection between the first connecting member 45 and the rear floor beam assembly 5.

In the present embodiment, the torsional rigidity of the vehicle body can be increased by positioning the hatrack rear cross member 33 above the joint between the second joint 46 and the rear floor beam assembly 5. Through being located hatrack front beam 31 above the junction of first connecting piece 45 and back floor beam assembly 5 for the hatrack front beam 31 is in a plane with the stress position of first connecting piece 45 and back floor beam assembly 5, improvement back suspension mounting point's that can be better intensity.

Optionally, in an embodiment of the present disclosure, the frame structure at the rear of the vehicle body further includes two rear wheel housings 6 disposed opposite to each other in the left-right direction of the vehicle, upper portions of the two rear wheel housings 6 are respectively connected to lower portions of the two corresponding pillars 42, and the C-pillar inner panel 43 and the rear floor beam assembly 5 are respectively connected to inner side walls of the corresponding rear wheel housings 6, so that the stress of the rear wheel housings 6 can be transmitted to the first annular frame structure and the second annular frame structure.

In this embodiment, the rear wheel house 6 is used to house the tire, and the C-pillar inner panel 43 and the rear floor beam assembly 5 are connected to the inner sidewall of the rear wheel house 6, so that the rear wheel house 6 can be reinforced and the strength of the rear wheel house 6 can be improved. Wherein, in some examples, be formed with the third turn-ups on the C post inner panel 43, the third turn-ups is used for laminating the inside wall at rear wheel casing 6, then can improve joint strength through welded fastening, guarantees the additional strengthening to rear wheel casing 6.

Through being connected C post inner panel 43 and back floor beam assembly 5 with the inside wall of rear wheel casing 6, can be so that the atress of rear wheel casing 6 transmits to first annular frame structure and second annular frame structure, can reduce the response of rear wheel casing 6, promote the NVH's of back row performance, the impact force that simultaneously can also disperse the chassis and hang to the promotion is driven and is controlled the performance.

Optionally, in an embodiment of the present disclosure, the C-pillar assembly 4 further includes a C-pillar outer plate 44, an upper portion of the C-pillar outer plate 44 is connected to the pillar 42, and a lower portion of the C-pillar outer plate 44 is connected to an outer wall of an upper portion of the rear wheel housing 6 corresponding thereto.

In the present embodiment, the upper portion of the C-pillar outer 44 is connected to the outward facing surface of the pillar 42, the C-pillar outer 44 may be provided to face the C-pillar inner 43, and the lower portion of the C-pillar outer 44 is connected to the outer side wall of the upper portion of the rear wheel house 6. By connecting the C-pillar outer panel 44 to the rear wheel house 6, the response of the rear wheel house 6 can be reduced more effectively, and the NVH performance of the rear row can be improved.

Alternatively, in one embodiment of the present disclosure, both ends of the quarter cross member 2 in the left-right direction of the vehicle are connected to both ends of the rear floor beam assembly 5 in the left-right direction of the vehicle, respectively, so that the first annular frame structure and the second annular frame structure form one body.

Wherein, in this embodiment, through being connected back panel crossbeam 2 and back floor beam assembly 5, can make the bottom of first annular frame structure and second annular frame structure also form a whole, thereby first annular frame structure and second annular frame structure can whole atress, can promote the torsional rigidity and the mode of whole automobile body afterbody, the load of chassis transmission also can spread to first annular frame structure and second annular frame structure simultaneously, can obtain the rigidity performance on better chassis, the automobile body deformation problem under the condition of receiving the impact has been improved, make the better promotion of driving the accuse performance of vehicle.

Alternatively, in one embodiment of the present disclosure, the rear floor beam assembly 5 includes a rear floor cross member 52 and two rear side members 51 disposed opposite to each other in the left-right direction of the vehicle, both ends of the rear floor cross member 52 in the left-right direction of the vehicle are connected to the two rear side members 51, respectively, rear portions of the two rear side members 51 are connected to both ends of the rear apron cross member 2 in the left-right direction of the vehicle, respectively, and front portions of the two rear side members 51 are connected to lower portions of the two C-pillar assemblies 4, respectively.

In the present embodiment, the rear floor cross member 52 is positioned between the two rear side members 51, and both ends of the rear floor cross member 52 in the left-right direction of the vehicle are fixed by welding. Here, in some examples, the rear floor cross member 52 is formed with fourth beads at both ends in the left-right direction of the vehicle, respectively, and is connected to the inward-facing side walls of the rear side members 51 by the fourth beads.

Here, the outward side wall of the front portion of the rear side member 51 is connected to the inner side wall of the rear wheel house 6 in the above embodiment, the first connecting member 45 and the second connecting member 46 in the above embodiment are connected to the front portion and the rear portion of the rear side member 51, respectively, and the connecting position of the second connecting member 46 and the rear side member 51 is located above the connecting position of the rear floor cross member 52 and the rear side member 51.

A second aspect of the present disclosure also provides a vehicle including the vehicle body rear frame structure described above.

The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. A frame structure at the tail part of a vehicle body is characterized by comprising two C-column assemblies, a rear floor beam assembly, a coat and hat rack assembly, a rear coaming cross beam and two D-column bodies;

the two ends of the coat and hat rack assembly in the left-right direction of the vehicle are respectively connected with the upper parts of the two D column bodies and the middle parts of the two C column assemblies, the lower parts of the two D column bodies are respectively connected with the two ends of the rear coaming cross beam in the left-right direction of the vehicle, the lower parts of the two C column assemblies are respectively connected with the two ends of the rear floor beam assembly in the left-right direction of the vehicle, and the upper parts of the two C column assemblies are respectively used for being connected with the top cover cross beam;

the two C-column assemblies, the coat and hat rack assembly and the rear floor beam assembly form a first annular frame structure together;

the rear floor beam assembly, the rear coaming cross beam, the two D-shaped column bodies and the hat and coat rack assembly jointly enclose a luggage box space for containing articles, and the two D-shaped column bodies, the rear coaming cross beam and the hat and coat rack assembly jointly form a second annular frame structure.

2. The vehicle body rear frame structure according to claim 1, wherein the C-pillar assembly includes a side sill, a pillar, and a C-pillar inner panel, a lower portion of the side sill is connected to an upper portion of the pillar, an upper portion of the side sill is adapted to be connected to a roof rail, an upper portion of the C-pillar inner panel is connected to a lower portion of the pillar, the pillar is connected to the coat hanger assembly and an upper portion of the D-pillar body, and a lower portion of the C-pillar inner panel is connected to the rear floor beam assembly.

3. The vehicle body rear frame structure according to claim 2, wherein the C-pillar inner panel is constructed in a herringbone structure, a first connecting portion and a second connecting portion are provided on a lower portion of the C-pillar inner panel, a first connecting member is provided on the first connecting portion, a second connecting member is provided on the second connecting portion, a first flange is formed on a lower portion of the first connecting member, a second flange is formed on a lower portion of the second connecting member, the first flange and the second flange are connected to the rear floor beam assembly, respectively, the first connecting member and the second connecting member are provided in a front-rear direction of the vehicle, a joint edge is formed on an upper portion of the C-pillar inner panel, and the joint edge is joined to a lower portion of the pillar.

4. The vehicle body rear frame structure according to claim 3, wherein the hat rack assembly includes a hat rack rear cross member, a hat rack partition plate, and a hat rack front cross member, the hat rack partition plate is connected between the hat rack rear cross member and the hat rack front cross member, both ends of the hat rack rear cross member in the left-right direction of the vehicle and both ends of the hat rack front cross member in the left-right direction of the vehicle are connected to the two pillars, respectively, and both ends of the hat rack rear cross member in the left-right direction of the vehicle are connected to upper portions of the two D-pillar bodies.

5. The aft frame structure of claim 4, wherein the rear hatrack cross member is positioned above a junction of the second connector and the rear floor beam assembly such that the rear hatrack cross member, the second connector, and the rear floor beam assembly collectively comprise the first ring frame structure, and the front hatrack cross member is positioned above a junction of the first connector and the rear floor beam assembly.

6. The frame structure according to claim 2, further comprising two rear wheel covers disposed opposite to each other in a left-right direction of the vehicle, wherein upper portions of the two rear wheel covers are connected to lower portions of the two corresponding pillars, respectively, and the C-pillar inner panel and the rear floor beam assembly are connected to inner side walls of the corresponding rear wheel covers, respectively, so that a force applied to the rear wheel covers can be transmitted to the first annular frame structure and the second annular frame structure.

7. The frame structure according to claim 6, wherein the C-pillar assembly further includes a C-pillar outer panel, an upper portion of which is connected to the pillar, and a lower portion of which is connected to an outer wall of an upper portion of the rear wheel house corresponding thereto.

8. The vehicle body rear frame structure according to any one of claims 1 to 7, wherein both ends of the quarter cross member in the left-right direction of the vehicle are connected to both ends of the rear floor beam assembly in the left-right direction of the vehicle, respectively, so that the first annular frame structure and the second annular frame structure form one body.

9. The vehicle body rear frame structure according to claim 8, wherein the rear floor beam assembly includes a rear floor cross member and two rear side members disposed opposite to each other in the left-right direction of the vehicle, both ends of the rear floor cross member in the left-right direction of the vehicle are connected to the two rear side members, respectively, rear portions of the two rear side members are connected to both ends of the rear apron cross member in the left-right direction of the vehicle, respectively, and front portions of the two rear side members are connected to lower portions of the two C-pillar assemblies, respectively.

10. A vehicle characterized by comprising the vehicle body rear frame structure according to any one of claims 1 to 9.

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