Vehicle and connection structure for vehicle body

Abstract

The present disclosure relates to a vehicle and a connection structure for a vehicle body, the connection structure comprising: a roof side member extending in a longitudinal direction of the vehicle body; a roof rear cross member extending in a transverse direction of the vehicle body and having an end portion coupled to the roof side member; a rear pillar member extending in a vertical direction of the vehicle body and having an upper portion coupled to the roof side member and aligned with an end portion of the roof rear cross member, wherein an upper portion of the rear pillar member and the roof side member are coupled to each other by an insertion protrusion and an insertion groove; and a covering bracket covering a portion where the roof side member, the roof rear cross member, and the rear pillar member are connected to each other.

Description

Technical Field

[0001] The present disclosure generally relates to a connection structure of a vehicle body. Background Art

[0002] In the case of a conventional monocoque vehicle body, a plurality of components are connected to each other in a complex structure to construct the vehicle body. The shape and connection structure of the components are different for each vehicle type.

[0003] Therefore, in order to construct the body of a vehicle model, a plurality of molds are needed to manufacture the components for constructing the body. In addition, since the mold cannot be universal to construct the body of another vehicle model, another set of molds should be manufactured.

[0004] As described above, in the case where a vehicle body is manufactured according to a different assembly structure for each vehicle model and using a plurality of components, workability is reduced.

[0005] The foregoing content is only intended to help understand the background of the present disclosure, but is not intended to indicate that the present disclosure falls within the scope of the prior art already known to those skilled in the art. Summary of the invention

[0006] The present disclosure generally relates to a connection structure of a vehicle body, and a specific embodiment relates to a connection structure of an upper portion of a rear pillar (C pillar).

[0007] Therefore, an embodiment of the present disclosure provides a connection structure of a vehicle body, which is configured so that when a modular space frame vehicle body is constructed, components corresponding to the rear pillars (C-pillars) of the vehicle can be easily assembled to the roof and the vehicle floor, and can be connected thereto with excellent strength and rigidity.

[0008] According to one embodiment of the present disclosure, a connection structure of a vehicle body is provided. The connection structure includes: a roof side beam member extending in the longitudinal direction of the vehicle body; a roof rear cross beam member extending in the transverse direction of the vehicle body, an end of which is connected to the rear end of the roof side beam member; a rear pillar member extending in the vertical direction of the vehicle body, an upper portion of which is connected to the rear end of the roof side beam member and aligned with the end of the roof rear cross beam member; and a covering bracket covering a portion where the rear end of the roof side beam member, the end of the roof rear cross beam member, and the upper portion of the rear pillar member are connected to each other, the covering bracket being integrated with a portion in a single vehicle body, wherein the rear end of the roof side beam member and the upper portion of the rear pillar member can be connected to each other by fastening in an insertion manner by an insertion protrusion and an insertion groove.

[0009] An upper portion of the rear pillar member may be provided as a reinforcement portion, the reinforcement portion may be bent in a longitudinal direction of the roof side member, and the reinforcement portion and a rear end of the roof side member may be coupled to each other by fastening in an insertion manner.

[0010] The rear end of the roof side beam member may be connected to a protruding bracket, the protruding bracket may protrude to face the rear pillar member, the insertion protrusion may be provided integrally with the protruding bracket, the groove bracket may be engaged with the reinforcement portion to protrude to face the roof side beam member, and the groove bracket may be provided with an insertion groove so that the insertion protrusion may be engaged with the insertion groove in an insertion manner.

[0011] When the upper end of the rear pillar member moves toward the rear end of the roof side member in the lateral direction of the vehicle body, the insertion protrusion and the insertion groove can engage with each other, and the rear pillar member can be restricted from moving in the vertical direction and the longitudinal direction of the vehicle body by the engagement between the insertion protrusion and the insertion groove.

[0012] The insertion protrusion may include a neck and a locking portion, the neck protruding from the protruding bracket toward the rear support member, and the locking portion is provided at an end of the neck and has a cross-sectional width relatively larger than a cross-sectional width of the neck. The insertion groove may have a concave shape corresponding to an outer line of the neck of the insertion protrusion and the locking portion.

[0013] The plurality of insertion protrusions and the plurality of insertion grooves may be provided in such an arrangement that the insertion protrusions and the insertion grooves may be respectively spaced apart from each other in the front-rear direction, which may be the longitudinal direction of the roof side member.

[0014] The covering bracket may include: a first covering bracket, which is arranged inside the vehicle body to integrally cover the rear end of the roof side beam member, the end of the roof rear cross beam member and the upper part of the rear pillar member; a second covering bracket, which is arranged outside the vehicle body to integrally cover the rear end of the roof side beam member and the end of the roof rear cross beam member; and a third covering bracket, which is arranged outside the vehicle body to integrally cover the rear end of the roof side beam member and the upper part of the rear pillar member.

[0015] The second cover bracket and the third cover bracket can be coupled to each other without a gap therebetween because the second cover bracket and the third cover bracket contact each other at the roof side member outside the vehicle body and are connected to each other in a planar contact manner.

[0016] The first cover bracket and the third cover bracket may be disposed to overlap each other to provide a flange portion having a predetermined area. The flange portion may be disposed at a portion between a rear end of the roof side member and an upper portion of the rear pillar member.

[0017] The flange portion of the covering bracket may be provided to integrally cover the protruding bracket having the insertion protrusion and the recessed bracket having the insertion recess, in addition to the reinforcing portion of the rear pillar member.

[0018] According to an embodiment of the present disclosure, when constructing a modular space frame vehicle body, the upper portion of the rear pillar member corresponding to the rear pillar (C pillar) of the vehicle is connected to the rear end of the roof side beam member in an insertion manner through an insertion protrusion and an insertion groove, so that the rear pillar member and the roof side beam member are connected to each other with an easy assembly process and excellent strength and rigidity. Therefore, the connection structure of the embodiment of the present disclosure can ensure strong connection force, strength and rigidity, and can improve durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other objects, features and other advantages of the present disclosure will be more clearly understood from the following detailed description in conjunction with the accompanying drawings, in which:

[0020] Figure 1 is a diagram showing a modular space frame vehicle body.

[0021] Figure 2 is a diagram showing a connection structure of a vehicle body according to an embodiment of the present disclosure, in which a roof side member and a rear pillar member are coupled to each other in an inserted manner;

[0022] Figure 3 yes Figure 2 Bottom perspective view of

[0023] Figure 4 is an exploded perspective view showing a roof side member having an insertion protrusion and a rear pillar member having an insertion groove according to an embodiment of the present disclosure;

[0024] Figure 5 is a bottom perspective view showing a roof side rail member, Figure 4 A protruding bracket having an insertion protrusion is coupled to the roof side rail member; and

[0025] Fig. 6A , Figure 6B and Figure 6C An embodiment in which the connection structure of a vehicle body is applied to various vehicle body structures is shown. DETAILED DESCRIPTION

[0026] Hereinafter, a connection structure of a vehicle body according to an exemplary embodiment of the present disclosure will be described with reference to the accompanying drawings.

[0027] Figure 1 is a diagram showing a modular space frame vehicle body. Figure 1, the floor assembly 109 includes a front apron assembly 101, a dash assembly 103, a center floor assembly 105, and a rear floor assembly 107. The upper assembly 119 includes a side assembly 111, a quarter assembly 113, a rear assembly 115, and a roof rack 117. When the floor assembly 109 and the upper assembly 119 are assembled, a skin assembly 127 including fenders 121, side-outer parts 123, and a roof panel 125 is coupled thereto to form a space frame body.

[0028] For reference, the above Figure 1 The description is only for easy understanding of the configuration of the space frame body mentioned in the present disclosure, and it does not represent the assembly order of the carriages constituting the actual space frame body. The actual assembly order may vary depending on various circumstances.

[0029] The roof rack 117 includes a roof side tube 129, a cowl 131, a middle roof rail 133, and a rear roof rail 135 forming a space frame structure. The roof side tube 129 is located at opposite sides of the vehicle, and the cowl 131, the middle roof rail 133, and the rear roof rail 135, which are provided between the roof side tubes 129 to connect the roof side tubes 129 to each other, are formed into a hollow closed tube structure. As the roof side tube 129 expands and contracts in the longitudinal direction of the vehicle body, and the cowl 131, the middle roof rail 133, and the rear roof rail 135 expand and contract in the transverse direction of the vehicle body, the roof rack 117 is easily deformed and easily applied to various vehicle types and various vehicle models.

[0030] The front fender assembly 101, the instrument panel assembly 103, the center floor assembly 105, and the rear floor assembly 107, which are modularized to form the floor assembly 109, are assembled by changing their length or width. Therefore, the floor assembly 109 is easily deformable and applicable to various vehicle types and various vehicle models.

[0031] As the roof frame 117 and the floor assembly 109 are deformed, other components can be assembled by adjusting their shapes or sizes. Therefore, it is easy to develop a body suitable for a new vehicle type or model, thereby facilitating the development of a new vehicle type, and the body structure can be effectively applied to small-volume production.

[0032] Meanwhile, the skin component 127 including the fender 121, the side-outer portion 123, and the roof panel 125 may be made of various materials such as carbon fiber reinforced plastic (CFRP) as well as conventional steel plastic. Therefore, the shape of each component may be freely changed according to the vehicle type or vehicle model to be applied to the above-mentioned space frame, and various vehicles may be easily manufactured.

[0033] The connection structure for a vehicle body may be configured to be applied to a space frame vehicle body having the above configuration. Figure 2 and Figure 3 As shown in the embodiment of FIG. 1 , the connection structure for a vehicle body includes: a roof side rail member 10 extending in the longitudinal direction of the vehicle body; a roof rear cross member 20 extending in the transverse direction of the vehicle body and having its end connected to the rear end of the roof side rail member 10; a rear pillar member 30 extending in the vertical direction of the vehicle body and having its upper portion connected to the rear end of the roof side rail member 10 while being aligned with the end of the roof rear cross member 20; and a cover bracket 40 formed in a plate shape, which covers a portion where the rear end of the roof side rail member 10, the end of the roof rear cross member 20, and the upper portion of the rear pillar member 30 are connected to each other, and the cover bracket 40 is integrated with a portion in a single vehicle body. The rear end of the roof side rail member 10 and the upper portion of the rear pillar member 30 are connected to each other in an insertion manner by an insertion protrusion 60 and an insertion groove 80.

[0034] That is, the roof side member 10 is inserted between the roof rear cross member 20 and the rear pillar member 30, and the roof rear cross member 20 and the rear pillar member 30 are respectively connected at right angles to the roof side member 10. In addition, the cover bracket 40 covers and reinforces the portion where the rear end of the roof side member 10, the end of the roof rear cross member 20, and the upper portion of the rear pillar member 30 are connected to each other, thereby configuring a connection structure of the vehicle body.

[0035] The roof side rail member 10, the roof rear cross member 20, and the rear pillar member 30 may all be formed as hollow tubes or pipes to constitute a space frame structure.

[0036] exist Figure 1 , the roof side rail member 10 may be a configuration corresponding to the roof side pipe 129 , and the roof rear cross member 20 may be a configuration corresponding to the rear roof rail 135 .

[0037] In addition, the rear pillar member 30 may correspond to a component referred to as a C-pillar or a rear pillar of a general vehicle.

[0038] like Figure 1 As shown, rear pillar member 30 may be aligned with and connected to a portion at a rear end of roof side tube 129, for example, a portion connected to rear roof rail 135, and cover bracket 40 may be coupled to the space frame structure to cover a connection portion where the above three components are connected to each other.

[0039] In addition, the connection structure of the vehicle body may be used so that the rear pillar member 30 is connected to a connection structure such as Figure 1 An object in the base plate assembly 109.

[0040] That is, the connection structure may correspond to a structure in which the lower end of the rear pillar member 30 is coupled to the rear end of the side member located at the side of the floor assembly 109 .

[0041] The floor assembly 109 as described above may be provided with a cross member which is different from the above assembly and is formed in the transverse direction of the vehicle body. Figure 1 The rear roof beam 135 in the roof frame 117 corresponds to the rear roof beam 135 in the roof frame 117. Figure 2 The connection structure of the vehicle body of FIG. 1 is used as the same structure in which the rear pillar member 30 is coupled to the rear end of the side member of the floor assembly 109 while only the direction of the connection structure is changed upside down.

[0042] In fact, the embodiment of the present disclosure is expressed with a concept including when the rear pillar member 30 is coupled to the rear end of the roof side pipe 129 and when it is coupled to the rear end of the side member of the floor assembly 109, as described above. That is, the connection structure of the vehicle body of the present disclosure can be commonly used in the structure in which the rear pillar member 30 formed in the vertical direction of the vehicle body is coupled to the upper side and the lower side of the vehicle body.

[0043] According to the embodiment of the present disclosure, the roof rear cross member 20 is disposed in the transverse direction of the vehicle body perpendicular to the roof side members 10. The end of the roof rear cross member 20 is connected to the roof side members 10 in a manner directly coupled to the rear end thereof.

[0044] The coupling between the roof rear cross member 20 and the roof side rail member 10 may be performed by welding, a structural adhesive, or a separate coupling member.

[0045] Since the end portion of the roof rear cross member 20 and the rear end of the roof side member 10 are directly coupled to each other, the coupled portion between the roof rear cross member 20 and the roof side member 10 may provide sufficient strength and rigidity.

[0046] According to an embodiment of the present disclosure, the rear pillar member 30 is disposed at a right angle to the roof side member 10 in the vertical direction of the vehicle body. The upper portion of the rear pillar member 30 may be coupled to the rear end of the roof side member 10 in a manner that the upper portion of the rear pillar member 30 is aligned with the end of the roof rear cross member 20.

[0047] As described above, the rear end of the roof side member 10 and the end of the roof rear cross member 20 may be coupled to each other by welding, and the rear end of the roof side member 10 and the upper portion of the rear pillar member 30 may be coupled to each other by welding. However, in the embodiment of the present disclosure, the coupling between the rear end of the roof side member 10 and the upper portion of the rear pillar member 30 is performed in an insertion manner through the insertion protrusion 60 and the insertion groove 80, rather than by welding.

[0048] That is to say, Figures 2 to 5 As shown, the upper end of the rear pillar member 30 is bent in the longitudinal direction of the roof side member 10 to provide a reinforcing portion 31. The reinforcing portion 31 and the rear end of the roof side member 10 are coupled to each other by being fastened in an insertion manner.

[0049] When the upper end of the rear pillar member 30 is bent into an L shape along the longitudinal direction of the roof side member 10 to form the reinforcement portion 31, the coupling portion between the upper portion of the rear pillar member 30 and the rear end of the roof side member 10 can provide sufficient strength and rigidity.

[0050] The coupling structure between the insertion protrusion 60 and the insertion groove 80 will be described in detail. The protrusion bracket 50 is coupled to the rear end of the roof side member 10 to protrude toward the rear pillar member 30, and the insertion protrusion 60 is provided integrally with the protrusion bracket 50. In addition, the groove bracket 70 is coupled to the reinforcement portion 31 of the rear pillar member 30 to protrude toward the roof side member 10, and the insertion groove 80 is provided in the groove bracket 70 so that the insertion protrusion 60 is inserted into the insertion groove 80.

[0051] Of course, when the protruding bracket 50 provided with the insertion protrusion 60 is provided at the upper end of the rear pillar member 30, and the groove bracket 70 provided with the insertion groove 80 is provided at the rear end of the roof side member 10, the structure in which the insertion protrusion 60 and the insertion groove 80 are engaged with each other can be applied as a configuration opposite to the above-mentioned embodiment of the present disclosure.

[0052] When the upper end of the rear pillar member 30 moves toward the rear end of the roof side member 10 in the lateral direction of the vehicle body, the insertion protrusion 60 and the insertion groove 80 are engaged with each other in an insertion manner. In addition, by the engagement between the insertion protrusion 60 and the insertion groove 80, the movement of the rear pillar member 30 in the vertical direction and the longitudinal direction of the vehicle body is restricted.

[0053] The insertion protrusion 60 of the embodiment of the present disclosure includes a neck portion 61 protruding from the protruding bracket 50 toward the rear pillar member 30 , and a locking portion 62 provided at an end of the neck portion 61 and having a relatively larger cross-sectional width than the neck portion 61 .

[0054] The neck portion 61 has a shape in which two parts overlap each other while facing each other, and has a relatively narrower cross-sectional width than that of the locking portion 62. The locking portion 62 has a rectangular cross-sectional shape extending from the neck portion 61, and has a relatively larger cross-sectional width than that of the neck portion 61.

[0055] The insertion groove 80 has a shape corresponding to the outer lines of the neck portion 61 and the locking portion 62 , and is formed in a concave shape on the groove bracket 70 .

[0056] Therefore, in order to couple the upper portion of the rear pillar member 30 to the rear end of the roof side member 10, the protruding bracket 50 is first coupled to the lower surface of the rear end of the roof side member 10 by using the coupling member 91 such as a bolt or a screw or a structural adhesive. Next, the groove bracket 70 is coupled to the upper surface of the reinforcement portion 31 of the rear pillar member 30 by using the coupling member 92 such as a bolt or a screw or a structural adhesive. Then, when the groove bracket 70 of the rear pillar member 30 moves toward the protruding bracket 50 of the roof side member 10 in the transverse direction of the vehicle body, the insertion protrusion 60 and the insertion groove 80 are engaged with each other in an insertion manner.

[0057] As described above, when the upper end of the rear pillar member 30 and the rear end of the roof side member 10 are coupled to each other through the insertion protrusion 60 and the insertion groove 80, the rear pillar member 30 enters a restricted state in which the rear pillar member 30 cannot move in the vertical direction and the longitudinal direction of the vehicle body relative to the roof side member 10. In this state, the cover bracket 40 is used to cover the coupling portion between the insertion protrusion 60 and the insertion groove 80, which includes the reinforcement portion 31, and then welding is performed, or a structural adhesive or a coupling member such as a bolt or a screw is used in the coupling portion to fix the insertion protrusion 60 and the insertion groove 80.

[0058] According to the embodiment of the present disclosure, the plurality of insertion protrusions 60 and the plurality of insertion grooves 80 are provided in an arrangement in which the insertion protrusions 60 and the insertion grooves 80 are respectively spaced apart from each other in the front-rear direction, that is, the longitudinal direction of the roof side member 10. Therefore, the roof side member 10 and the rear pillar member 30 can have a stronger coupling force, and can improve strength, rigidity, and durability.

[0059] The covering bracket 40 of the embodiment of the present disclosure includes: a first covering bracket 41, which is arranged inside the vehicle body to integrally cover the rear end of the roof side beam member 10, the end of the roof rear cross beam member 20, and the upper part of the rear pillar member 30; a second covering bracket 42, which is arranged outside the vehicle body to integrally cover the rear end of the roof side beam member 10 and the end of the roof rear cross beam member 20; and a third covering bracket 43, which is arranged outside the vehicle body to integrally cover the rear end of the roof side beam member 10 and the upper part of the rear pillar member 30.

[0060] That is, the first covering bracket 41, the second covering bracket 42, and the third covering bracket 43 provide support by covering the connection portion between the rear end of the roof side member 10, the end of the roof rear cross member 20, and the upper portion of the rear pillar member 30 in a surface contact manner in all directions. Therefore, the connection portion can ensure sufficient strength and rigidity.

[0061] The outer edge of the second cover bracket 42 and the outer edge of the third cover bracket 43 contact each other at the roof side member 10 outside the vehicle body and are connected to each other in a planar contact manner. The second cover bracket 42 and the third cover bracket 43 are coupled to each other without a gap therebetween. Therefore, the second cover bracket 42 and the third cover bracket 43 can have a stronger coupling force.

[0062] When the first covering bracket 41, the second covering bracket 42 and the third covering bracket 43 cover the connecting parts where the end of the roof rear cross member 20, the upper part of the rear pillar member 30 and the rear end of the roof side member 10 are connected to each other, the first covering bracket 41, the second covering bracket 42 and the third covering bracket 43 forming the covering bracket 40 can be fixed to the connecting structure by welding, structural adhesive or connecting members such as bolts or screws.

[0063] The first cover bracket 41 and the third cover bracket 43 are disposed to overlap each other, thereby providing a flange part 44 having a predetermined area. The flange part 44 is configured as a part disposed between the rear end of the roof side member 10 and the upper portion of the rear pillar member 30. Therefore, the connection part between the rear end of the roof side member 10 and the upper portion of the rear pillar member 30 can have improved strength and rigidity.

[0064] Furthermore, in addition to the reinforcement portion 31 bent in the longitudinal direction of the roof side member 10 at the upper end of the rear pillar member 30, the flange portion 44 is provided to integrally cover the protruding bracket 50 provided with the insertion protrusion 60 and the groove bracket 70 provided with the insertion groove 80. Therefore, the insertion portion between the rear pillar member 30 and the roof side member 10 can provide sufficient strength and rigidity.

[0065] As described above, the connection structure of the vehicle body of the embodiment of the present disclosure is configured so that the length of the rear pillar member 30 can be easily changed and is coupled to the rear end of the roof side member 10. Therefore, the connection structure of the embodiment of the present disclosure can be easily applied to various structures of the vehicle body frame, such as Fig. 6A , Figure 6B and Figure 6C shown.

[0066] exist Fig. 6A , Figure 6B and Figure 6C , various structures of vehicle body frames comparable to each other are shown. In each structure of the vehicle body frame, circles A1 and C1 represent joints provided to form each vehicle body frame. Among the circles, the opposite ends of the components corresponding to the rear pillar member 30 of the present disclosure are represented by solid circles C1, and the above-mentioned connection structure of the vehicle body of the present disclosure can be applied to the solid circles C1.

[0067] That is, when the length of the rear pillar member 30 is changed and slightly deformed, the connection structure of the vehicle body can be easily applied to the vehicle body. Fig. 6A , Figure 6B and Figure 6C Various vehicle types are shown. Therefore, the development of new vehicle models can be easily carried out, and a technical infrastructure that can be effectively applied to small-scale production can be provided.

[0068] In the above, according to the embodiment of the present disclosure, when configuring the vehicle body structure of the modular space frame type, the upper portion of the rear pillar member 30 corresponding to the rear pillar (C pillar) of the vehicle is connected to the rear end of the roof side member 10 in an insertion manner through the insertion protrusion 60 and the insertion groove 80, thereby performing the connection between the rear pillar member 30 and the roof side member 10 with easy assembly performance and excellent strength and rigidity. Therefore, the connection structure can ensure stronger connection force, strength and rigidity, and can improve durability.

[0069] Although preferred embodiments of the present disclosure have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. A connection structure for a vehicle body, the connection structure include: A roof side member extending in the longitudinal direction of the vehicle body; a rear roof cross member extending in the transverse direction of the vehicle body, and an end portion of the rear roof cross member being coupled to a rear end of the roof side member; a rear pillar member extending in a vertical direction of the vehicle body, and an upper portion of the rear pillar member being coupled to a rear end of the roof side member and aligned with an end of the roof rear cross member, wherein the upper portion of the rear pillar member and the rear end of the roof side member are coupled to each other by an insertion protrusion and an insertion groove; as well as A covering bracket covers a portion where the rear end of the roof side member, the end of the roof rear cross member, and the upper portion of the rear pillar member are connected to each other, the covering bracket being configured to be integrated with a portion in a single vehicle body.

2. The connection structure according to claim 1, in: The upper portion of the rear pillar member includes a reinforcement portion, wherein the reinforcement portion is bent along a longitudinal direction of the roof side member; and The reinforcement portion and the rear end of the roof side rail member are coupled to each other through the insertion protrusion and the insertion groove.

3. The connection structure according to claim 2, further comprising: include: a protruding bracket coupled to the rear end of the roof side rail member, wherein the protruding bracket protrudes to face the rear pillar member, and wherein the insertion protrusion is provided integrally with the protruding bracket; and A groove bracket is engaged with the reinforcement portion so as to protrude to face the roof side member, wherein the groove bracket is provided with the insertion groove so that the insertion protrusion is engaged with the insertion groove.

4. The connection structure according to claim 3, in: The insertion protrusion includes a neck portion and a locking portion, the neck portion protruding from the protruding bracket toward the rear pillar member, and the locking portion is provided at an end of the neck portion and has a cross-sectional width relatively larger than a cross-sectional width of the neck portion; and The insertion groove has a concave shape corresponding to the neck portion of the insertion protrusion and outer lines of the locking portion.

5. The connection structure according to claim 3, in, A plurality of insertion protrusions and a plurality of insertion grooves are provided in an arrangement where the insertion protrusions and the insertion grooves are respectively spaced apart from each other in a front-rear direction which is a longitudinal direction of the roof side member.

6. The connection structure according to claim 3, in, The covering bracket comprises: a first covering bracket disposed inside the vehicle body to integrally cover a rear end of the roof side member, the end of the roof rear cross member, and the upper portion of the rear pillar member; a second covering bracket provided outside the vehicle body to integrally cover the rear end of the roof side member and the end of the roof rear cross member; and A third covering bracket is provided outside the vehicle body to integrally cover the rear end of the roof side member and the upper portion of the rear pillar member.

7. The connection structure according to claim 6, in, The second covering bracket and the third covering bracket are coupled to each other without a gap therebetween.

8. The connection structure according to claim 7, in, The second cover bracket and the third cover bracket contact each other at the roof side member outside the vehicle body and are connected to each other in a planar contact manner.

9. The connection structure according to claim 6, in: The first covering bracket and the third covering bracket are arranged to overlap each other to provide a flange portion having a predetermined area; and The flange portion is provided in a region between the rear end of the roof side rail member and the upper portion of the rear pillar member.

10. The connection structure according to claim 9, in, The flange portion of the covering bracket is provided to integrally cover the protruding bracket having the insertion protrusion and the recessed bracket having the insertion recess, in addition to the reinforcing portion of the rear pillar member.

11. The connection structure according to claim 1, in: The insertion protrusion and the insertion groove are configured to engage with each other when the upper end of the rear pillar member moves toward the rear end of the roof side rail member in the lateral direction of the vehicle body; and The rear pillar member is configured to be restricted from moving in the vertical direction and the longitudinal direction of the vehicle body by engagement between the insertion protrusion and the insertion groove.

12. A vehicle, include: Vehicle body; a roof side member extending in the longitudinal direction of the vehicle body, the roof side member having a rear end; a rear roof cross member extending in the transverse direction of the vehicle body, an end portion of the rear roof cross member being coupled to the rear end of the roof side member; a rear pillar member extending in the vertical direction of the vehicle body, the rear pillar member being aligned with the end of the roof rear cross member, and the upper portion of the rear pillar member being coupled to the rear end of the roof side member by engagement of an insertion protrusion with an insertion groove; as well as A covering bracket covers a portion where the rear end of the roof side member, the end of the roof rear cross member, and the upper portion of the rear pillar member are connected to each other.

13. The vehicle according to claim 12, further comprising: include: a protruding bracket coupled to the rear end of the roof side rail member, wherein the protruding bracket protrudes to face the rear pillar member, and wherein the protruding bracket includes the insertion protrusion; and A groove bracket is engaged with the upper portion of the rear pillar member so as to protrude to face the roof side member, wherein the groove bracket includes the insertion groove.

14. The vehicle according to claim 13, in: The insertion protrusion includes a neck portion and a locking portion, the neck portion protruding from the protruding bracket toward the rear pillar member, and the locking portion is provided at an end of the neck portion and has a cross-sectional width relatively larger than a cross-sectional width of the neck portion; and The insertion groove has a concave shape corresponding to the neck portion of the insertion protrusion and outer lines of the locking portion.

15. The vehicle according to claim 13, further comprising: include: A plurality of insertion protrusions and a plurality of insertion grooves, wherein the insertion protrusions and the insertion grooves are respectively spaced apart from each other in a front-rear direction, wherein the front-rear direction is a longitudinal direction of the roof side member.

16. The vehicle according to claim 12, in, The covering bracket comprises: a first covering bracket disposed inside the vehicle body to integrally cover the rear end of the roof side member, the end of the roof rear cross member, and the upper portion of the rear pillar member; a second covering bracket provided outside the vehicle body to integrally cover the rear end of the roof side member and the end of the roof rear cross member; and A third covering bracket is provided outside the vehicle body to integrally cover the rear end of the roof side member and the upper portion of the rear pillar member.

17. The vehicle according to claim 12, in, The vehicle body also includes: a floor assembly having a side portion coupled to a lower end of the rear pillar member; and An upper assembly is coupled to the base assembly.

18. The vehicle according to claim 17, in, The vehicle body further includes a skin assembly coupled to the floor assembly and the upper assembly.

19. A connection structure for a vehicle body, the connection structure include: A rear cross member of the roof, extending in the transverse direction of the vehicle body; A rear pillar member extending in the vertical direction of the vehicle body; a roof side member extending in the longitudinal direction of the vehicle body and inserted between the roof rear cross member and the rear pillar member, wherein a rear end of the roof side member is coupled to an end of the roof rear cross member and an upper portion of the rear pillar member, and wherein the rear end of the roof side member and the upper portion of the rear pillar member are coupled to each other by an insertion protrusion and an insertion groove; and A covering bracket covers a region where the rear end of the roof side rail member, the end of the rear roof cross member, and the upper portion of the rear pillar member are coupled to each other.

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