Vehicle body joint structure

Abstract

The present disclosure relates to a vehicle body joint structure for a vehicle body that can include a chassis vehicle body including in a passenger compartment portion, and a dedicated portion connected to an outer side of the chassis vehicle body, and the vehicle body joint structure can include a side flattening member connected to lower ends on both sides of an outer side of the passenger compartment portion and arranged to extend in a length direction of the vehicle body, a lower side vertical member installed at lower ends on both sides of an inner side of the passenger compartment portion and arranged to extend in a height direction of the vehicle body, and a center floor side member connected to the lower side vertical member and arranged to extend in the length direction of the vehicle body.

Description

[0001] Cross-citation of related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2025-0042540, filed with the Korean Intellectual Property Office on April 2, 2025, and Korean Patent Application No. 10-2025-0158784, filed with the Korean Intellectual Property Office on October 29, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to a vehicle body joint structure. Background Technology

[0004] In recent years, the automotive industry has been introducing a new concept for the vision of future mobility, aiming to realize dynamic, human-centered future cities. One such future mobility solution is the “Purpose-Specific Vehicle (PBV),” a type of mobility device based on its intended use.

[0005] PBV vehicles can be exemplified by environmentally friendly mobility vehicles based on electric vehicles (EVs).

[0006] The body of this PBV vehicle may include a passenger cabin section that serves as passenger space and a dedicated section for luggage storage, and the exterior of the passenger cabin section is manufactured as a cut-out chassis body with panels removed.

[0007] However, as Figure 1 and Figure 2 As shown, in the case of a chassis cab vehicle manufactured on a monocoque platform 1 and used for various PBV models (such as passenger vans and cargo vans), the overall height dimension (d) of the rear of the passenger compartment section 3 increases due to the adoption of a low floor. In this structure, a rear load transfer connection structure is required to meet the rear-end collision performance requirements of the low-floor PBV chassis. Furthermore, to prevent luggage stored in a dedicated section at the rear of the passenger compartment section 3 from entering the passenger compartment section 3, the installation area for safety devices needs to be enlarged. Summary of the Invention

[0008] This disclosure relates to a body joint structure, and to a body joint structure in which a plurality of crossbeams, vertical members and gussets are mounted on the inside of the passenger compartment portion of a chassis-body vehicle, thereby improving the load path to distribute the impact load in a rear-end collision event.

[0009] Therefore, some embodiments of this disclosure can solve the above-mentioned problems and provide a body joint structure that can improve the rigidity of the body and reduce the impact caused by rear collisions by installing multiple crossbeams, vertical members and gusset plates on the inside of the passenger compartment portion in a chassis-body vehicle.

[0010] According to embodiments of the present disclosure, a vehicle body joining structure may be a vehicle body joining structure in which the vehicle body includes: a chassis body, included in a passenger compartment portion; and a dedicated portion connected to the outer side of the chassis body; the vehicle body joining structure includes: side flattening members, connected to the lower ends of both sides of the outer side of the passenger compartment portion and arranged to extend in the length direction of the vehicle body; lower vertical members, mounted on the lower ends of both sides of the inner side of the passenger compartment portion and arranged to extend in the height direction of the vehicle body; and a central floor side member, connected to the lower vertical members and arranged to extend in the length direction of the vehicle body.

[0011] One end of the side flattening component can be connected to the lower vertical component via the lower side corner brace.

[0012] The side smoothing component can be connected to the upper surface of the front support reinforcement, which is installed to support the outer surface of the passenger compartment portion.

[0013] The lower bottom reinforcement can be located between the lower part of the lower vertical member and the lower inner side of the vehicle body.

[0014] The vehicle body joining structure according to embodiments of the present disclosure may further include: a partition panel included in a vertical section of the passenger compartment portion; and an upper crossbeam mounted on the inner side of the passenger compartment portion and extending on the upper inner surface of the partition panel in a direction perpendicular to the height of the vehicle body.

[0015] The two sides of the upper crossbeam can be fixed to the upper inner surface of the partition panel by the upper side brackets.

[0016] The vehicle body joining structure according to an embodiment of the present disclosure may further include: a pair of central side crossbeams, installed inside the passenger compartment portion and extending on both sides of the central portion of the partition panel in a direction perpendicular to the height of the vehicle body.

[0017] One side of the central side beam can be fixed to the inner surface of the central part of the partition panel by the central side gusset plate.

[0018] The vehicle body joining structure according to an embodiment of the present disclosure may further include: a central crossbeam, mounted on the inside of the passenger compartment portion, and extending in a direction perpendicular to the height direction of the vehicle body between a pair of central side crossbeams on the inner surface of the central portion of the partition panel.

[0019] The vehicle body joining structure according to embodiments of the present disclosure may further include: a central lower crossbeam, installed inside the passenger compartment portion, and extending along a direction perpendicular to the height of the vehicle body on the lower inner surface of the partition panel.

[0020] The vehicle body joining structure according to the embodiments of the present disclosure may further include: a central vertical member, installed on the inside of the passenger compartment portion, extending along the height direction of the vehicle body on the inner surface of the central portion of the partition panel, and installed to connect the upper crossbeam and the central lower crossbeam.

[0021] One side of the central vertical member can be connected to the central side beam, and the other side can be connected to the central beam.

[0022] The vehicle body joining structure according to an embodiment of the present disclosure may further include: a lower vertical member, installed on the inside of the passenger compartment portion and on the lower inner surface of the partition panel, to connect the central side crossbeam and the central lower crossbeam.

[0023] The upper part of the lower vertical member can be connected to the lower vertical member, and the lower part of the lower vertical member can be connected to the lower inner side of the vehicle body.

[0024] One side of the lower vertical member can be fixed to the lower inner surface of the partition panel by a lower corner brace.

[0025] The other side of the lower vertical member can be connected to the end of the central lower crossbeam located on the lower inner surface of the partition panel.

[0026] Impacts transmitted from the lower rear of the vehicle body to the passenger compartment can be transferred to the central floor side members through the side flattening members, front support reinforcements, and lower vertical members.

[0027] Impacts transmitted from the lower rear of the vehicle body to the passenger compartment can be transferred to the side flattening members, the front support reinforcements, and the lower vertical members. Impacts transmitted to the lower vertical members can be dispersed and transferred to the central lower crossbeam and the lower bottom reinforcements.

[0028] The impact transmitted from the rear center of the vehicle body to the passenger compartment can be dispersed and transmitted from the central vertical member to the upper crossbeam, the central side crossbeam, the central lower crossbeam, and the central crossbeam.

[0029] According to an embodiment of the present invention, by installing multiple crossbeams, vertical members and gusset plates on the inner side of the passenger compartment in a chassis-type vehicle, the rigidity of the vehicle body can be improved and the impact caused by a rear-end collision can be reduced to protect the passenger compartment.

[0030] In some implementations, ensuring the rigidity of the vehicle body can prevent damage to the battery installed in the vehicle and improve passenger safety.

[0031] In some implementations, the position and number of crossbeams, vertical members, and gussets can be varied to accommodate the size and shape of the vehicle, thereby allowing for easy and flexible adaptation to various vehicle models, reducing investment and R&D costs, and increasing productivity. Attached Figure Description

[0032] Figure 1 A side view of a vehicle with a body joint structure applied according to an exemplary embodiment of the present disclosure is shown.

[0033] Figure 2 A rear view of a vehicle with a body joint structure applied according to an exemplary embodiment of the present disclosure is shown.

[0034] Figure 3 The path of an impact transmitted from the rear of the vehicle to the passenger compartment section when an exemplary embodiment of the body joint structure according to this disclosure is applied is shown.

[0035] Figure 4 A vehicle body joining structure according to an exemplary embodiment of the present disclosure is shown.

[0036] Figure 5 This is an enlarged view of the lower side reinforcement structure of the vehicle body in a vehicle body joining structure according to an exemplary embodiment of the present disclosure.

[0037] Figure 6 The path of an impact transmitted from the lower rear portion of the vehicle body to the passenger compartment portion in a body joint structure according to an exemplary embodiment of the present disclosure is shown when viewed from the side of the vehicle.

[0038] Figure 7 The diagram illustrates the path of an impact transmitted from the lower rear portion of the vehicle body to the passenger compartment portion in a body joint structure according to an exemplary embodiment of the present disclosure, when viewed from the inside of the passenger compartment portion toward the rear of the vehicle.

[0039] Figure 8 The diagram illustrates the path of an impact transmitted from the rear center of the vehicle body to the passenger compartment portion in a body joint structure according to an exemplary embodiment of the present disclosure, when viewed from the inside of the passenger compartment portion toward the rear of the vehicle. Detailed Implementation

[0040] The present disclosure will now be described in detail with reference to the accompanying drawings, in which some exemplary embodiments of the present disclosure are illustrated. As will be appreciated by those skilled in the art, the described exemplary embodiments may be modified in various ways for other embodiments without departing from the spirit or scope of the present disclosure.

[0041] In various exemplary embodiments, components with the same configuration may be described representatively using the same reference numerals, and in other embodiments, only those configurations that differ from those in the representative embodiments may be described.

[0042] The accompanying drawings are schematic and not necessarily drawn to scale. For clarity and convenience, the relative dimensions and proportions of the parts in the drawings may be enlarged or reduced, and any dimensions are for illustrative purposes only and are not necessarily limiting. Where the same structure, element, or part appears in two or more drawings, similar reference numerals may be used to indicate similar features. When a part is described as being "on" or "above" another part, the part may be directly on top of the other part, or other parts may be positioned in between.

[0043] This disclosure specifically illustrates exemplary embodiments of the present disclosure. Therefore, many variations of the present disclosure are contemplated for other embodiments. Thus, the present disclosure is not necessarily limited to the specific shape of the illustrated region, but also includes modifications to the shape—for example, by creating changes in shape for other embodiments.

[0044] Subsequently, with reference to the accompanying drawings, an exemplary embodiment of a vehicle body joining structure according to the present disclosure will be described.

[0045] Figure 3 The path of an impact transmitted from the rear of the vehicle to the passenger compartment when an exemplary embodiment of the body joint structure according to this disclosure is applied is shown. Figure 4 A vehicle body joining structure according to an exemplary embodiment of the present disclosure is shown.

[0046] The vehicle body joining structure according to an exemplary embodiment of the present disclosure can be applied to a special purpose vehicle (PBV) of the monocoque body type, and the body may include a low-floor monocoque platform 1 and a CTBA mounting portion 2, the CTBA mounting portion being formed to extend from the low-floor monocoque platform 1 and on which a coupled torsion beam axle (CTBA) can be mounted.

[0047] In some embodiments, the passenger compartment portion 3, which serves as passenger space, can be formed in the front of the monocoque platform 1. The passenger compartment portion 3 can be formed from a cut-out chassis body, and the CTBA mounting portion 2 connected to the outside of the chassis body can be used as a dedicated portion for placing cargo.

[0048] In some embodiments, multiple leveling components and multiple reinforcing members can be disposed on the upper part of the monocoque platform 1, such that the upper surface of the leveling components, the upper surface of the reinforcing members, and the upper surface of the vehicle body of the CTBA mounting portion 2 can be formed into a flat shape with the same height.

[0049] In other words, in some implementations, by forming a flat surface between the monocoque platform 1 side and the CTBA mounting portion 2 side, the dedicated portion can be flattened, and the load applied to the vehicle body can be dispersed in a rear-end collision event.

[0050] like Figure 4 As shown, in some embodiments, a partition panel 10 forming a vertical cross-section of the passenger compartment portion 3 can be disposed within the passenger compartment portion 3. Inner B-pillars can be installed on both sides of the partition panel 10 within the passenger compartment portion 3, extending in the height direction of the vehicle body. The inner B-pillars can be installed as a pair facing each other on two inner surfaces of the partition panel 10.

[0051] In some embodiments, on the inner side of the passenger compartment section 3, the upper crossbeam 12 may be mounted to extend on the upper inner surface of the partition panel 10 in a direction perpendicular to the vehicle height. The upper crossbeam 12 may be mounted to these inner B-pillars on both sides.

[0052] In some embodiments, a pair of central side beams 14 may be mounted on the inner sides of the central portion of the partition panel 10, extending in a direction perpendicular to the height of the vehicle body. The central side beams 14 may be mounted to connect to the interior B-pillars on both sides. The central side beams 14 may extend in a direction parallel to the upper beam 12.

[0053] In some embodiments, on the inner side of the passenger compartment section 3, a central crossbeam 18 may be installed between a pair of central side crossbeams 14 on the inner side of the central portion of the partition panel 10, extending in a direction perpendicular to the height direction of the vehicle body. The central crossbeam 18 may extend in a direction parallel to the upper crossbeam 12.

[0054] In some embodiments, on the inner side of the passenger compartment section 3, the central lower crossbeam 16 can be mounted to extend on the lower inner surface of the partition panel 10 in a direction perpendicular to the height of the vehicle body. Both sides of the central lower crossbeam 16 can be connected to the interior B-pillars. In some embodiments, the central lower crossbeam 16 can extend in a direction parallel to the upper crossbeam 12, the central side crossbeam 14, and the central crossbeam 18.

[0055] In some embodiments, a central vertical member 20 may be installed on the inner side of the passenger compartment section 3 to connect the upper crossbeam 12 and the central lower crossbeam 16. The central vertical member 20 may extend along the height direction of the vehicle body on the inner side of the central portion of the partition panel 10, and may be arranged as a pair extending parallel to each other.

[0056] In some embodiments, one side of the central vertical member 20 may be connected to the central side beam 14, and the other side may be installed to be connected to the central beam 18.

[0057] In some embodiments, a lower vertical member 40 may be installed on the inner side of the passenger compartment section 3 to connect the central side crossbeam 14 and the central lower crossbeam 16. The lower vertical members 40 may be configured as a pair extending parallel to each other to connect a pair of central side crossbeams 14 and central lower crossbeams 16 respectively.

[0058] Figure 5 This is an enlarged view of the lower side reinforcement structure of the vehicle body in a vehicle body joining structure according to an exemplary embodiment of the present disclosure.

[0059] Let's refer to each other. Figure 4 and Figure 5 In some embodiments, the lower vertical member 90 may be mounted on the inside of the passenger compartment section 3 to connect to both sides of the central lower crossbeam 16 on the lower inner surface of the partition panel 10. The upper part of the lower vertical member 90 may be connected to the lower vertical member 40, and the lower part of the lower vertical member 90 may be connected to the lower inner side of the vehicle body.

[0060] In some embodiments, the lower vertical members 90 may be arranged as a pair extending parallel to each other to connect to a pair of lower vertical members 40.

[0061] In some embodiments, the lower bottom reinforcement 34 may be located between the lower part of the lower vertical member 90 and the lower inner side of the vehicle body. The lower bottom reinforcement 34 may be provided as a pair on a pair of lower vertical members 90.

[0062] In some embodiments, a pair of central floor side members 95, which extend parallel to each other in the longitudinal direction of the vehicle body, may be mounted on the lower outer side of the vehicle body at locations corresponding to a pair of lower bottom reinforcement members 34.

[0063] In some embodiments, the two sides of the upper crossbeam 12 can be fixed to the upper inner surface of the partition panel by upper side brackets 50. In some embodiments, the upper side brackets 50 can connect the upper crossbeam 12 and the inner B-pillar. The upper side brackets 50 can be arranged as a pair at both ends of the upper crossbeam 12.

[0064] In some embodiments, one side of the central side beam 14 can be fixed to the inner surface of the central portion of the partition panel 10 by a central side gusset plate 30. The central side gusset plate 30 can connect the central side beam 14 to the internal B-pillar. The central side gusset plate 30 can be provided as a pair at both ends of the central side beam 14.

[0065] In some embodiments, one side of the lower vertical member 40 can be fixed to the lower inner surface of the partition panel 10 via a lower side gusset plate 60. In some embodiments, the other side of the lower vertical member 40 can be connected to the end of the central lower crossbeam 16 on the lower inner surface of the partition panel 10. The lower side gusset plate 60 can connect the lower vertical member 90 and the internal B-pillar. The lower side gusset plates 60 can be arranged in pairs and installed on corresponding sides of the lower vertical member 90.

[0066] Figure 6 The path of impact transmitted from the lower rear portion of the vehicle body to the passenger compartment portion in a body joint structure according to an exemplary embodiment of the present disclosure is shown when viewed from the side of the vehicle. Figure 7 The diagram illustrates the path of an impact transmitted from the lower rear portion of the vehicle body to the passenger compartment portion in a body joint structure according to an exemplary embodiment of the present disclosure, when viewed from the inside of the passenger compartment portion toward the rear of the vehicle. Figure 8 The diagram illustrates the path of an impact transmitted from the rear center of the vehicle body to the passenger compartment portion in a body joint structure according to an exemplary embodiment of the present disclosure, when viewed from the inside of the passenger compartment portion toward the rear of the vehicle.

[0067] refer to Figure 6 In some embodiments, the front support reinforcement 42 may be mounted on the outer side of the passenger compartment portion 3 to support the outer surface of the passenger compartment portion 3. In some embodiments, the side leveling member 22 may be mounted to the upper side of the front support reinforcement 42 and extend in the length direction of the vehicle.

[0068] In some embodiments, the front support reinforcement 42 may be configured as two parts located on the front upper surface of the monocoque platform 1 and may be connected to the front end of the side leveling member 22. In some embodiments, the upper surfaces of the front support reinforcement 42 and the side leveling member 22 may be configured to have the same height as the upper surface of the vehicle body of the CTBA mounting portion 2.

[0069] like Figure 6 As shown, in some embodiments, the impact transmitted from the lower rear portion of the vehicle body to the passenger compartment portion 3 can enter the side leveling member 22 on the outer side of the passenger compartment portion 3 and the central floor side member 95 on the lower part of the vehicle.

[0070] In some embodiments, the impact of the side smoothing member 22 on the outer side of the passenger compartment section 3 can pass through the front support reinforcement 42 and the partition panel 10 to reach the lower vertical member 90 on the inner side of the passenger compartment section 3. The impact transmitted to the lower vertical member 90 is transmitted along the lower vertical member 90 to the lower part of the vehicle and can be transmitted to the central floor side member 95 connected to the lower part of the lower vertical member 90.

[0071] In some embodiments, the impact entering the central floor side member 95 can continue to be transmitted to the lower part of the passenger compartment section 3 and can be combined with the impact reaching the side leveling member 22, so that the impact transmitted from the lower rear part of the vehicle body is not directed directly to the interior of the passenger compartment section 3, but is directed at the central floor side member 95 at the lower part of the passenger compartment section 3, thereby protecting the interior of the passenger compartment section 3 from rearward impact.

[0072] In some implementations, such as Figure 7 As shown, an impact that enters the passenger compartment section 3 from the rear lower part of the vehicle body via the side smoothing member 22 and passes through the front support reinforcement 42 can be transmitted to the lower vertical member 90. The impact transmitted to the lower vertical member 90 can be transmitted along the central lower crossbeam 16 connected to one side of the lower vertical member 90 in a direction perpendicular to the height of the vehicle body, and can also be dispersed and transmitted to the lower bottom reinforcement 34 connected to the lower part of the lower vertical member 90. That is, in some embodiments, a rear-end collision can be dispersed onto the central lower crossbeam 16 and the lower bottom reinforcement 34, thereby protecting the interior of the passenger compartment section 3 from the effects of the rear-end collision.

[0073] In some implementations, such as Figure 8 As shown, the impact transmitted from the rear center of the vehicle body to the passenger compartment 3 can be transmitted through the partition panel 10 to the central vertical member 20 inside the passenger compartment 3, and can be dispersed from the central vertical member 20 and transmitted to the upper crossbeam 12, the central side crossbeam 14, the central lower crossbeam 16, and the central crossbeam 18. The impact transmitted to the upper crossbeam 12, the central side crossbeam 14, the central lower crossbeam 16, and the central crossbeam 18 can be dispersed by being transmitted in the left and right directions of the vehicle, and can prevent the impact from concentrating inside the passenger compartment 3, thereby protecting the interior of the passenger compartment 3 from the effects of rear impacts.

[0074] In this manner, according to an exemplary embodiment of the present disclosure, by installing multiple crossbeams, vertical members and gusset plates on the inside of the passenger compartment in a chassis-type vehicle, the rigidity of the vehicle body can be increased and the impact caused by a rear-end collision can be reduced to protect the passenger compartment.

[0075] In some implementations, ensuring the rigidity of the vehicle body can prevent damage to the battery installed in the vehicle and improve passenger safety.

[0076] In some implementations, the position and number of crossbeams, vertical members, and gussets can be varied to accommodate the size and shape of the vehicle, thereby allowing for easy and flexible adaptation to various vehicle models, reducing investment and R&D costs, and increasing productivity.

[0077] While exemplary embodiments of the present disclosure have been described in detail, it is to be understood that the present disclosure is not to be limited to the disclosed exemplary embodiments, but rather is intended to cover various modifications and equivalent arrangements of other embodiments included within the spirit and scope of the appended claims and their equivalents.

Claims

1. A body joining structure for a vehicle body, the vehicle body including a chassis body and a luggage compartment portion, the chassis body being included in a passenger compartment portion, the luggage compartment portion being connected to the outside of the chassis body, the body joining structure comprising: Side flattening members are connected to the lower ends of both sides of the outer side of the passenger compartment portion and are arranged to extend in the length direction of the vehicle body; The lower vertical members are installed on the lower ends of both sides inside the passenger compartment and are arranged to extend in the height direction of the vehicle body; as well as A central floor side member is connected to the lower vertical member and is arranged to extend in the length direction of the vehicle body.

2. The vehicle body joining structure according to claim 1, further comprising: A lower corner brace, wherein one end of the side flattening member is connected to the lower vertical member via the lower corner brace.

3. The vehicle body joining structure according to claim 2, further comprising: A front support reinforcement is mounted to support the outer surface of the passenger compartment portion, wherein the side smoothing member is connected to the upper surface of the front support reinforcement.

4. The vehicle body joining structure according to claim 3 further includes: The lower bottom reinforcement is located between the lower part of the lower vertical member and the lower inner side of the vehicle body.

5. The vehicle body joining structure according to claim 4, further comprising: A partition panel is included in the vertical section of the passenger compartment portion; as well as The upper crossbeam is installed on the inside of the passenger compartment section and extends on the upper inner surface of the partition panel in a direction perpendicular to the height of the vehicle body.

6. The vehicle body joining structure according to claim 5, further comprising: Upper corner brace, wherein the two sides of the upper crossbeam are fixed to the upper inner surface of the partition panel by the upper corner brace.

7. The vehicle body joining structure according to claim 5, further comprising: A pair of central side crossbeams are installed on the inside of the passenger compartment section and extend on both sides of the central portion of the partition panel in a direction perpendicular to the height of the vehicle body.

8. The vehicle body joining structure according to claim 7, further comprising: A central side gusset plate, wherein one side of the central side beam is fixed to the inner surface of the central portion of the partition panel via the central side gusset plate.

9. The vehicle body joining structure according to claim 7, further comprising: A central crossbeam is installed on the inside of the passenger compartment section and extends in a direction perpendicular to the height direction of the vehicle body between a pair of central side crossbeams on the inner surface of the central portion of the partition panel.

10. The vehicle body joining structure according to claim 9, further comprising: The central lower crossbeam is installed on the inside of the passenger compartment section and extends on the lower inner surface of the partition panel in a direction perpendicular to the height of the vehicle body.

11. The vehicle body joining structure according to claim 10, further comprising: A central vertical member is installed on the inside of the passenger compartment section, extending along the height direction of the vehicle body on the inner surface of the central portion of the partition panel, and is installed to connect the upper crossbeam and the central lower crossbeam.

12. The vehicle body joining structure according to claim 11, wherein, One side of the central vertical member is connected to the central side beam, and the other side of the central vertical member is installed to connect to the central beam.

13. The vehicle body joining structure according to claim 10, further comprising: The lower vertical member is installed on the inside of the passenger compartment section and on the lower inner surface of the partition panel, and is installed to connect the central side crossbeam and the central lower crossbeam.

14. The vehicle body joining structure according to claim 13, wherein, The upper part of the lower vertical member is connected to the lower vertical member, and The lower part of the lower vertical member is connected to the lower inner side of the vehicle body.

15. The vehicle body joining structure according to claim 14, wherein, One side of the lower vertical member is fixed to the lower inner surface of the partition panel by the lower side gusset plate.

16. The vehicle body joining structure according to claim 15, wherein, The other side of the lower vertical member is connected to the end of the central lower crossbeam located on the lower inner surface of the partition panel.

17. The vehicle body joining structure according to claim 3, wherein, The body joint structure is configured such that impacts transmitted from the lower rear portion of the body to the passenger compartment are transmitted through the side flattening member, the front support reinforcement, and the lower vertical member to the central floor side member.

18. The vehicle body joining structure according to claim 10, wherein, The body joint structure is configured such that impacts transmitted from the lower rear portion of the body to the passenger compartment are transmitted to the side flattening member, the front support reinforcement, and the lower vertical member, and impacts transmitted to the lower vertical member are dispersed and transmitted to the central lower crossbeam and the lower bottom reinforcement.

19. The vehicle body joining structure according to claim 11, wherein, The body joint structure is configured such that impacts transmitted from the rear center of the body to the passenger compartment are dispersed and transmitted from the central vertical member to the upper crossbeam, the central side crossbeam, the central lower crossbeam, and the central crossbeam.

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