Body body joining structure

Abstract

A joining structure of a vehicle body is provided. The vehicle body includes a front vehicle body module fixed to a lower vehicle body and a rear vehicle body module detachably coupled to the front vehicle body module in a vehicle body front-rear direction, the joint structure includes joint units disposed at a rear portion of the front vehicle body module and a front portion of the rear vehicle body module, respectively, a striker mounted on an outer side of a first closed cross section defined in either the rear portion of the front vehicle body module or the front portion of the rear vehicle body module, and a latch assembly disposed inside a second closed cross-section defined in the other of the rear portion of the front body module and the front portion of the rear body module.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Korean Patent Application No. 10-2023-0125388, filed on September 20, 2023, which is hereby incorporated herein by reference. Technical Field

[0003] The invention relates to a vehicle body. Background Art

[0004] Recently, the automotive industry is introducing a new vision of future mobility to realize a people-oriented and vibrant future city. As a purpose-based mobility mode, one of the future mobility solutions is a purpose-built vehicle (PBV).

[0005] PBV can be an example of an environmentally friendly mobility vehicle based on an electric vehicle (EV). PBV can provide users with various customized services while moving from a starting point to a destination in an unmanned autonomous driving method.

[0006] The body of such a PBV is composed of an underbody (also referred to in the art as a rolling chassis or a skateboard) and an upper body assembled to the underbody.

[0007] Here, the upper vehicle body may be configured in various forms according to the type of customized service of the PBV. For example, the PBV may be used as a hailing type vehicle, in which the cabins are respectively configured at the front and rear of the upper vehicle body. In addition, the PBV may be used as a cab type vehicle, in which the cabin is configured only at the front portion of the upper vehicle body. In addition, the PBV may be used as a delivery type vehicle, in which the cabin is configured at the front of the upper vehicle body and the luggage room is configured at the rear.

[0008] As mentioned above, depending on the various customization services of PBV, the cost of changing the upper body structure may increase.

[0009] The matters described in this background section are intended to enhance understanding of the background of embodiments of the invention and may include matters beyond known prior art. Summary of the invention

[0010] The present invention relates to a vehicle body and a specific embodiment relates to a joint structure of a vehicle body (eg, a PBV).

[0011] An embodiment of the present disclosure provides a joint structure of a vehicle body that can be replaced with various types of vehicle bodies according to a customized service type of a PBV.

[0012] A joining structure according to an exemplary embodiment may be applied to a vehicle body, which includes a front vehicle body module fixed to a lower vehicle body and a rear vehicle body module detachably coupled to the front vehicle body module along a front-rear direction of the vehicle body. The joining structure according to an exemplary embodiment may include a joint unit mounted on a rear portion of the front vehicle body module and a front portion of the rear vehicle body module, respectively, a striker mounted on an outer side of a closed cross section formed on one of the rear portion of the front vehicle body module and the front portion of the rear vehicle body module, and a latch assembly mounted on an inner side of a closed cross section formed on the other of the rear portion of the front vehicle body module and the front portion of the rear vehicle body module.

[0013] The front body module may include a fixed portion roof rail assembly having a fixed portion closed cross-section connected to the fixed portion roof panel.

[0014] The rear body module may include a variable portion roof rail assembly having a variable portion closed cross-section connected to a variable portion roof panel.

[0015] The striker may be mounted outside the closed cross-section of the variable portion.

[0016] The latch assembly may be mounted inside the closed cross-section of the fixing portion.

[0017] The striker may be locked and unlocked with the latch assembly through a striker passing hole formed in the fixed portion roof rail assembly.

[0018] The front vehicle body module may include a latch mounting unit connected to an inner side of the closed cross-section of the fixing portion and connected to the latch assembly.

[0019] The rear vehicle body module may include a striker mounting unit connected to an inner side of the closed cross-section of the variable portion and connected to the striker.

[0020] The fixed portion roof rail assembly may include a fixed portion roof rail connected to the fixed portion roof panel, and a fixed portion roof cover connected to the fixed portion roof panel and the fixed portion roof rail.

[0021] The latch mounting unit may include a latch mounting baffle connected to the fixed portion roof rail and the fixed portion top cover and connected to the latch assembly, and a pair of supporting baffles, each supporting baffle being connected to both sides of the latch mounting baffle so that the latch mounting baffle is located between the pair of supporting baffles, and each supporting baffle is connected to the fixed portion top cover.

[0022] The variable portion roof rail assembly may include a variable portion roof rail connected to a variable portion roof panel, a variable portion roof rail extension member connected to the variable portion roof rail, and a variable portion roof cover combined with the variable portion roof panel and the variable portion roof rail extension member.

[0023] The striker mounting unit may include a striker mounting bulkhead connected to the variable portion roof rail, the variable portion roof rail extension member, and the variable portion roof cover, and connected to the striker via the variable portion roof cover therebetween.

[0024] A joining structure according to one exemplary embodiment may be applied to a vehicle body including a front vehicle body module fixed to a lower vehicle body and a rear vehicle body module detachably coupled to the front vehicle body module in a front-rear direction of the vehicle body.

[0025] A joining structure according to an exemplary embodiment may include joint units respectively installed at the rear of a front body module and the front of a rear body module, fixed portion sealing flanges formed on a fixed portion roof rail assembly, a fixed portion center pillar assembly and a fixed portion floor assembly respectively connected to the rear of the front body module to install a fixed portion inner sealing member, and variable portion sealing flanges formed on a variable portion roof rail assembly, a variable portion center pillar assembly and an upper variable portion floor assembly respectively connected to the front of the rear body module to install a variable portion inner sealing member.

[0026] The fixed portion roof rail assembly may include a fixed portion roof rail connected to the fixed portion roof panel, and a fixed portion roof cover connected to the fixed portion roof panel and the fixed portion roof rail.

[0027] The variable portion roof rail assembly may include a variable portion roof rail connected to a variable portion roof panel, a variable portion roof rail extension member connected to the variable portion roof rail, and a variable portion roof cover connected to the variable portion roof panel and the variable portion roof rail extension member.

[0028] The fixing portion sealing flange may be formed on the fixing portion top cover.

[0029] The variable portion sealing flange may be formed on the variable portion roof rail and the variable portion roof cover.

[0030] The fixing portion center pillar assembly may include a fixing portion center pillar and a fixing portion pillar cover connected to the fixing portion center pillar.

[0031] The variable portion center pillar assembly may include a variable portion center pillar and a variable portion pillar cover connected to the variable portion center pillar.

[0032] The fixing portion sealing flange may be formed on the fixing portion column cover.

[0033] The variable portion sealing flange may be formed on the variable portion center pillar and the variable portion pillar cover.

[0034] The fixed portion floor assembly may include a fixed portion upper cross member connected to the fixed portion floor panel.

[0035] The variable portion floor assembly may include a variable portion upper cross member connected to a variable portion floor panel, a variable portion floor extension member connected to the variable portion upper cross member, and a variable portion floor cover connected to the variable portion floor panel and the variable portion upper cross member.

[0036] The fixing portion sealing flange may be formed on the fixing portion upper cross member.

[0037] The variable portion sealing flange may be formed on the variable portion floor extending member and the variable portion floor cover.

[0038] The fixed portion sealing flange and the variable portion sealing flange may be provided as stoppers to prevent the rear body module from rotating.

[0039] According to an exemplary embodiment of the present disclosure, cost savings may be achieved by configuring a vehicle body to accommodate various customized services of a PBV.

[0040] According to the exemplary embodiment of the present disclosure, it is possible to ensure the combined strength, skeleton strength, and waterproof performance of the front and rear vehicle body modules that are detachable from each other.

[0041] In addition, the effects that can be obtained or expected due to the embodiments of the present invention will be disclosed directly or implicitly in the detailed description of the embodiments of the present invention. That is, various effects expected according to the embodiments of the present invention will be disclosed in the detailed description described later. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Since these drawings are referenced for explaining exemplary embodiments of the present invention, the technical idea of ​​the present invention should not be construed as being limited to the drawings.

[0043] Figure 1 is an exploded perspective view illustrating a joining structure of a vehicle body according to an exemplary embodiment.

[0044] Figure 2 is an exploded perspective view of a front body module and a rear body module illustrating a joint structure applied to a vehicle body according to an exemplary embodiment.

[0045] Figure 3 is a perspective view of a front vehicle body module illustrating a joining structure applied to a vehicle body according to an exemplary embodiment.

[0046] Figure 4 is an exploded perspective view of a front vehicle body module illustrating a joining structure applied to a vehicle body according to an exemplary embodiment.

[0047] Figure 5 is a cross-sectional view of a roof rail assembly illustrating a fixing portion of a front vehicle body module of a joining structure applied to a vehicle body according to an exemplary embodiment.

[0048] Figure 6 is a cross-sectional view showing a center pillar assembly of a fixing portion of a front vehicle body module of a joining structure applied to a vehicle body according to an exemplary embodiment.

[0049] Figure 7 is a cross-sectional view showing a fixing portion floor assembly of a front vehicle body module of a joining structure applied to a vehicle body according to an exemplary embodiment.

[0050] Figure 8 is a perspective view of a rear vehicle body module illustrating a joining structure applied to a vehicle body according to an exemplary embodiment.

[0051] Fig. 9 is an exploded perspective view of a rear vehicle body module illustrating a joining structure applied to a vehicle body according to an exemplary embodiment.

[0052] Fig.10 is a cross-sectional view of a roof rail assembly showing a variable portion of a rear body module of a joining structure applied to a vehicle body according to an exemplary embodiment.

[0053] Fig.11 is a cross-sectional view showing a variable portion center pillar assembly of a rear vehicle body module of a joint structure applied to a vehicle body according to an exemplary embodiment.

[0054] Fig.12 is a cross-sectional view showing a variable portion floor assembly of a rear vehicle body module of a joint structure applied to a vehicle body according to an exemplary embodiment.

[0055] Fig.13A and Fig. 13B is a cross-sectional view illustrating a mounting structure of a fixing portion joint of a joint unit of a joint structure applied to a vehicle body according to an exemplary embodiment.

[0056] Fig.14A and Fig. 14B is a cross-sectional view illustrating a mounting structure of a variable portion joint of a joint unit of a joint structure applied to a vehicle body according to an exemplary embodiment.

[0057] Fig.15A and Fig. 15B is a cross-sectional view illustrating a mounting structure of a latch assembly applied to an engagement structure of a vehicle body according to an exemplary embodiment.

[0058] Fig.16 is a cross-sectional view illustrating a mounting structure of a striker of a joining structure applied to a vehicle body according to an exemplary embodiment.

[0059] Figures 17 to 22 2 is a drawing explaining the operation of a joining structure of a vehicle body according to an exemplary embodiment.

[0060] The following figure identifiers may be used in conjunction with the figures to describe various features of embodiments of the invention.

[0061] 1: Lower body 3: Upper body

[0062] 100: Joint structure 110: Front body module

[0063] 110a: fixing part 111: fixing part cover

[0064] 113: Fixed part top cover 113a: Strike pin through hole

[0065] 114, 116, 176: Fixed part sealing flange 115: Fixed part column cover

[0066] 121: Fixed part roof panel 131: Fixed part roof rail assembly

[0067] 133: Fixed part Roof rail 141, 161: Fixed part Closed cross section

[0068] 151: Fixed part center column assembly 153: Fixed part center column

[0069] 171: Fixed floor assembly 173: Fixed floor panel

[0070] 175: Fixed upper cross member 210: Rear body module

[0071] 210a: variable part 211: variable part cover

[0072] 213: variable part top cover 213a, 215a: joint through hole

[0073] 214, 216, 218, 234, 254, 278: Variable part sealing flange

[0074] 215: Variable column cover 217: Variable floor cover

[0075] 221: Variable roof panel 231: Variable roof rail assembly

[0076] 233: Variable portion roof rail 235: Variable portion roof rail extension member

[0077] 241, 261: Variable part closed cross section 251: Variable part center column assembly

[0078] 253: Variable center column 271: Variable floor assembly

[0079] 273: Variable part floor panel 275: Variable part upper cross beam

[0080] 277: Variable floor extension member 310: Joint unit

[0081] 331: Fixed joint 351: Variable joint

[0082] 410: Strike pin 431: Strike pin mounting unit

[0083] 433: striker mounting spacer 510: latch assembly

[0084] 511: Latch component 513: Latch locking component

[0085] 531: Latch mounting unit 533: Latch mounting partition

[0086] 535: Supporting spacer 610: Sealing member inside the fixed part

[0087] 710: variable portion internal sealing member 810: molding member

[0088] 910: External sealing member 990: Stopper

[0089] The above drawings are not necessarily drawn to scale, but should be understood as presenting a somewhat simplified representation of various preferred features that illustrate the basic principles of embodiments of the present invention. The specific design features of embodiments of the present invention, including, for example, specific dimensions, orientations, locations, and shapes, will be determined in part by specific intended applications and use environments. DETAILED DESCRIPTION

[0090] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. Those skilled in the art should appreciate that the described embodiments may be modified in various different ways without departing from the spirit or scope of the present invention.

[0091] The terminology used herein is for describing particular embodiments only and is not intended to limit the present disclosure.As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise.

[0092] As used herein, the terms "include" and / or "comprising" indicate the presence of specified features, integers, steps, operations, elements and / or components, but they may also include and do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0093] As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0094] In this specification, the term "connected" refers to a physical relationship between two parts, where the parts are directly connected by welding, rivets, self-piercing rivets (SPR), flow drill screws (FDS), structural adhesives, etc., or indirectly connected through one or more intermediate parts.

[0095] As used herein, "vehicle," "vehicle-mounted," "automobile," or other similar terms used herein generally refer to passenger cars, sports cars, sport utility vehicles (SUVs), buses, trucks, and various commercial vehicles, including passenger cars, hybrid vehicles, electric vehicles, hybrid electric vehicles, electric vehicle-based PBVs, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., other than petroleum fuels derived from resources).

[0096] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0097] Figure 1 is an exploded perspective view illustrating a joining structure of a vehicle body according to an exemplary embodiment.

[0098] refer to Figure 1 , the joining structure 100 of a vehicle body according to an exemplary embodiment may be applied to a vehicle body of a purpose-based mobile vehicle (Purpose-Built Vehicle: hereinafter referred to as “PBV”), for example.

[0099] PBVs can be used as electric vehicle-based living module vehicles that provide various services to passengers while moving from one place to a destination in an unmanned autonomous driving manner.

[0100] In one example, the PBV can be manufactured in a single-box design with a large interior space. The PBV can also apply face-to-face seats to the interior space.

[0101] The PBV body is suitable for small-batch production of various models using a small number of parts and can be manufactured in a variety of shapes and sizes.

[0102] The body of the PBV includes a skateboard-type lower body 1 (generally referred to as a “rolling chassis” or “chassis frame” by those skilled in the art) and an upper body 3 assembled to the lower body 1 .

[0103] Components such as a battery assembly and a drive motor may be mounted on the lower vehicle body 1. The upper vehicle body 3 is a body in white (BIW) connected to the lower vehicle body 1, and may constitute a passenger cabin and a luggage room having a wide interior space.

[0104] In this specification, “body front-rear direction” may be defined as the longitudinal direction of the body, “vehicle width direction” may be defined as the left-right direction of the body, and “up-down direction” may be defined as the height direction of the body.

[0105] In this specification, the “upper end”, “upper part” or “upper surface” of a component means a relatively higher end, part or surface of the component in the figure, and the “lower end”, “lower part” or “lower surface” of a component means a relatively lower end, part or surface of the component in the figure.

[0106] In addition, in this specification, the end of a component (e.g., one end or the other end, etc.) means the end of the component in any direction, and the end portion of a component (e.g., one end portion or the other end portion, etc.) means a portion of the component including the end.

[0107] The joining structure 100 according to one exemplary embodiment may be a structure that can apply various types of upper vehicle bodies 3 to the lower vehicle body 1 according to a customized service type of PBV.

[0108] To this end, the joint structure 100 according to one exemplary embodiment includes a front body module 110 and a rear body module 210 as the upper body 3 .

[0109] The front body module 110 includes a cab-type front compartment. The front body module 110 may be fixed to the front portion of the lower body 1 .

[0110] The front body module 110 may be coupled to the front portion of the lower body 1 in a vertical direction through a body mounting unit known to those skilled in the art. The front body module 110 may be provided as a fixing portion 110a fixed to the front portion of the lower body 1 .

[0111] The rear body module 210 may include a rear compartment or a luggage room. The rear body module 210 is detachably provided at an upper portion of the lower body 1 and at a rear portion of the front body module 110.

[0112] The rear body module 210 can be attached and detached from the rear of the lower body 1 in a vertical direction. In addition, the rear body module 210 can be attached and detached to the rear of the front body module 110 in the front-rear direction of the vehicle body. The rear body module 210 can be manufactured in various shapes according to the purpose of the PBV.

[0113] The rear body module 210 may be provided at an upper portion of the lower body 1 and at a rear portion of the front body module 110 as a detachable variable portion 210 a .

[0114] That is, the rear body module 210 can form a rear compartment at the rear of the vehicle body. In addition, the rear body module 210 can form a vehicle body 3 of a vehicle model together with the front body module 110.

[0115] In addition, the rear body module 210 can form a luggage room at the rear of the vehicle body. In addition, the rear body module 210 can form a delivery type upper body 3 together with the front body module 110.

[0116] Figure 2 is an exploded perspective view of a front body module and a rear body module illustrating a joint structure applied to a vehicle body according to an exemplary embodiment.

[0117] refer to Figure 1 and Figure 2 According to an exemplary embodiment, the engagement structure 100 may further include a joint unit 310 , a striker 410 , a latch assembly 510 , a fixed portion inner sealing member 610 , and a variable portion inner sealing member 710 .

[0118] In one embodiment, the joint unit 310 is configured to attach and detach the front body module 110 and the rear body module 210 in the front-rear direction of the vehicle body.

[0119] The joint units 310 are installed at the rear of the front body module 110 and the front of the rear body module 210 , respectively.

[0120] In one example, the joint unit 310 may include a plurality of fixed portion joints 331 and a plurality of variable portion joints 351 .

[0121] The fixed portion joint 331 may be installed at the rear of the front body module 110 . Also, the variable portion joint 351 may be installed at the front of the rear body module 210 .

[0122] The fixed portion joint 331 and the variable portion joint 351 may be engaged with or separated from each other. In one example, the fixed portion joint 331 and the variable portion joint 351 may be mechanically locked or unlocked by a manual or automatic method.

[0123] In another example, the fixed portion joint 331 and the variable portion joint 351 may be locked or unlocked mechanically, or may be locked or unlocked by magnetic force and electromagnetic force.

[0124] In another such example, the fixed part joint 331 may include a magnetic module including a combination of a circular magnet, a linear magnet, a coil, and a locking member rotated by the operation of a motor. In addition, the variable part joint 351 is locked or unlocked with the fixed part joint 331 by the magnetic force and electromagnetic force generated from the fixed part joint 331, and the armature block (e.g., a steel block) is mechanically locked or unlocked with the locking member.

[0125] Furthermore, the fixed portion joint 331 and the variable portion joint 351 may be configured to be locked or unlocked with each other in various ways that are apparent to those skilled in the art.

[0126] In an embodiment of the present disclosure, the striker 410 and the latch assembly 510 are configured to latch together.

[0127] Furthermore, the striker 410 and the latch assembly 510 are configured to prevent the front body module 110 from being separated from the rear body module 210 when the coupling force between the fixed portion joint 331 and the variable portion joint 351 is insufficient or lost.

[0128] The striker 410 is installed at one of the rear of the front body module 110 and the front of the rear body module 210 . Also, the latch assembly 510 is installed at the other of the rear of the front body module 110 and the front of the rear body module 210 .

[0129] In one example, the striker 410 may be installed at the front of the rear body module 210 . Also, the latch assembly 510 may be installed at the rear of the front body module 110 .

[0130] In an embodiment of the present disclosure, the fixed portion inner sealing member 610 and the variable portion inner sealing member 710 are configured to seal the interior of the front body module 110 and the rear body module 210 coupled to each other through the joint unit 310 , the striker 410 and the latch assembly 510 .

[0131] The fixed portion inner sealing member 610 is installed at the rear portion of the front body module 110 , and the variable portion inner sealing member 710 is installed at the front portion of the rear body module 210 .

[0132] In one example, the fixed portion inner sealing member 610 and the variable portion inner sealing member 710 may include sealing strips of a rubber material.

[0133] Meanwhile, according to one exemplary embodiment, the coupling structure 100 may further include a molding member 810 and an external sealing member 910 .

[0134] The molding member 810 and the exterior sealing member 910 are configured to seal the exterior of the front body module 110 and the rear body module 210 coupled to each other.

[0135] The molding member 810 may be installed at the rear of the front body module 110 . The exterior sealing member 910 may be installed at the front of the rear body module 210 .

[0136] The molding member 810 may be formed of a plastic material. In addition, the external sealing member 910 may include a sealing strip of a rubber material.

[0137] Hereinafter, the mounting structure of the joint unit 310 , the striker 410 , the latch assembly 510 , the fixed portion inner sealing member 610 , and the variable portion inner sealing member 710 will be described in detail with reference to the accompanying drawings.

[0138] Figure 3 is a perspective view showing a front vehicle body module of a joint structure applied to a vehicle body according to an exemplary embodiment, Figure 4is an exploded perspective view of a front vehicle body module of a joint structure applied to a vehicle body according to an exemplary embodiment.

[0139] refer to Figure 3 and Figure 4 The front vehicle body module 110 according to one embodiment of the present disclosure may include a fixing portion cover plate 111 , a fixing portion roof rail assembly 131 , a fixing portion center pillar assembly 151 , and a fixing portion floor assembly 171 .

[0140] The fixing portion cover plate 111 is disposed at the rear of the front vehicle body module 110. The fixing portion cover plate 111 may be connected with a fixing portion roof rail assembly 131 and a fixing portion center pillar assembly 151, which will be explained later.

[0141] The fixing portion cover plate 111 includes a fixing portion top cover 113 provided at an upper portion and fixing portion pillar covers 115 connected in a vertical direction to both sides of the fixing portion top cover 113 in a vehicle width direction.

[0142] The fixed portion roof rail assembly 131 includes a fixed portion roof rail 133 connected to a fixed portion roof panel 121 provided at an upper portion of the front vehicle body module 110 .

[0143] The fixing portion roof rail 133 is disposed in the vehicle width direction at the rear of the front body module 110. In one example, the fixing portion roof rail 133 may be provided in an "L"-shaped cross-sectional shape.

[0144] Here, the fixed portion roof panel 121 and the fixed portion roof rail 133 are connected to the fixed portion top cover 113 of the fixed portion cover plate 111 .

[0145] Figure 5 is a cross-sectional view of a roof rail assembly illustrating a fixing portion of a front vehicle body module of a joining structure applied to a vehicle body according to an exemplary embodiment.

[0146] like Figure 5 As shown, the fixed portion top cover 113 , the fixed portion roof panel 121 , and the fixed portion roof rail 133 of the fixed portion roof rail assembly 131 connected to each other may form a fixed portion closed cross-section 141 .

[0147] The fixing portion top cover 113 includes a fixing portion sealing flange 114. The fixing portion sealing flange 114 is formed on the fixing portion top cover 113 in a predetermined shape (for example, a curved shape).

[0148] The fixing portion center pillar assembly 151 includes a fixing portion center pillar 153. The fixing portion center pillars 153 are respectively provided at both sides of the rear portion of the front vehicle body module 110 in the vehicle width direction. The upper portion of the fixing portion center pillar 153 is connected to the fixing portion roof rail 133.

[0149] The fixing portion center pillar 153 is connected to the fixing portion pillar cover 115 of the fixing portion cover plate 111 .

[0150] Figure 6 is a cross-sectional view showing a center pillar assembly of a fixing portion of a front vehicle body module of a joining structure applied to a vehicle body according to an exemplary embodiment.

[0151] like Figure 6 As shown, the fixing portion pillar cover 115 and the fixing portion center pillar 153 of the fixing portion center pillar assembly 151 connected to each other may form a fixing portion closed cross section 161 .

[0152] The fixing portion column cover 115 includes a fixing portion sealing flange 116. The fixing portion sealing flange 116 is formed on the fixing portion column cover 115 in a predetermined shape (eg, a curved shape).

[0153] Figure 7 is a cross-sectional view showing a fixing portion floor assembly of a front vehicle body module of a joining structure applied to a vehicle body according to an exemplary embodiment.

[0154] like Figure 7 As shown, the fixed portion floor assembly 171 includes a fixed portion upper cross beam 175 connected to the fixed portion floor panel 173. The fixed portion upper cross beam 175 is connected to the lower portion of the fixed portion center pillar 153.

[0155] The fixing portion upper beam 175 includes a fixing portion sealing flange 176. The fixing portion sealing flange 176 is formed on the fixing portion upper beam 175 in a predetermined shape (for example, a curved shape).

[0156] Figure 8 is a perspective view showing a rear vehicle body module of a joint structure applied to a vehicle body according to an exemplary embodiment, Fig. 9 is an exploded perspective view of a rear vehicle body module illustrating a joining structure applied to a vehicle body according to an exemplary embodiment.

[0157] refer to Figure 8 and Fig. 9 The rear body module 210 according to one embodiment of the present disclosure may include a variable portion cover plate 211 , a variable portion roof rail assembly 231 , a variable portion center pillar assembly 251 , and a variable portion floor assembly 271 .

[0158] The variable portion cover plate 211 is disposed at the front portion of the rear vehicle body module 210. The variable portion cover plate 211 may be connected with the variable portion roof rail assembly 231, the variable portion center pillar assembly 251, and the variable portion floor assembly 271.

[0159] The variable portion cover plate 211 may include a variable portion top cover 213 , a variable portion pillar cover 215 , and a variable portion floor cover 217 .

[0160] The variable portion top cover 213 is provided as an upper portion of the variable portion cover plate 211. The variable portion pillar covers 215 are connected to both sides of the variable portion top cover 213 in a vertical direction. The variable portion floor cover 217 is connected to a lower portion of the variable portion pillar cover 215 in a vehicle width direction.

[0161] The variable portion roof rail assembly 231 includes a variable portion roof rail 233 and a variable portion roof rail extension member 235 .

[0162] The variable portion roof rail 233 is disposed in the front portion of the rear body module 210 along the vehicle width direction. The variable portion roof rail 233 is connected to the variable portion roof panel 221 disposed on the upper portion of the rear body module 210. In one example, the variable portion roof rail 233 may be provided in an "L" shaped cross-sectional shape.

[0163] The variable portion side rail extension member 235 is connected to the variable portion roof side rail 233 .

[0164] The variable portion roof panel 221 and the variable portion side member extension member 235 are connected to the variable portion top cover 213 of the variable portion cover plate 211 .

[0165] Fig.10 is a cross-sectional view of a roof rail assembly showing a variable portion of a rear body module of a joining structure applied to a vehicle body according to an exemplary embodiment.

[0166] like Fig.10 As shown, the variable portion roof cover 213 , the variable portion roof panel 221 , the variable portion roof rail 233 , and the variable portion rail extension member 235 of the variable portion roof rail assembly 231 connected to each other may form a variable portion closed cross-section 241 .

[0167] The variable portion roof cover 213 and the variable portion roof rail 233 respectively include variable portion sealing flanges 214 and 234. The variable portion sealing flanges 214 and 234 are formed on the variable portion roof cover 213 and the variable portion roof rail 233 in a predetermined shape (eg, a curved shape).

[0168] The variable portion center pillar assembly 251 includes a variable portion center pillar 253. The variable portion center pillars 253 are respectively provided at both sides of the front portion of the rear vehicle body module 210. The upper portion of the variable portion center pillar 253 is connected to the variable portion roof rail 233.

[0169] The variable portion center pillar 253 is connected to the variable portion pillar cover 215 of the variable portion cover plate 211 .

[0170] Fig.11 is a cross-sectional view showing a variable portion center pillar assembly of a rear vehicle body module of a joint structure applied to a vehicle body according to an exemplary embodiment.

[0171] like Fig.11As shown, the variable portion pillar cover 215 and the variable portion center pillar 253 of the variable portion center pillar assembly 251 connected to each other may form a variable portion closed cross-section 261 .

[0172] The variable portion pillar cover 215 and the variable portion center pillar 253 include variable portion sealing flanges 216 and 254, respectively. The variable portion sealing flanges 216 and 254 are formed in a predetermined shape (eg, a curved shape) on the variable portion pillar cover 215 and the variable portion center pillar 253.

[0173] Fig.12 is a cross-sectional view showing a variable portion floor assembly of a rear vehicle body module of a joint structure applied to a vehicle body according to an exemplary embodiment.

[0174] like Fig.12 As shown, the variable portion floor assembly 271 includes a variable portion upper cross member 275 and a variable portion floor extension member 277 .

[0175] The variable portion upper cross member 275 is connected to the variable portion floor panel 273. The variable portion floor extension member 277 is connected to the lower portion of the variable portion center pillar 253, and is connected to the variable portion upper cross member 275.

[0176] The variable portion floor panel 273 and the variable portion upper cross member 275 are connected to the variable portion floor cover 217 of the variable portion cover plate 211 .

[0177] Therefore, the variable portion floor cover 217 , the variable portion floor panel 273 , and the variable portion upper cross member 275 of the variable portion floor assembly 271 connected to each other may form a closed cross section.

[0178] The variable portion floor cover 217 and the variable portion floor extending member 277 respectively include variable portion sealing flanges 218 and 278. The variable portion sealing flanges 218 and 278 are formed on the variable portion floor cover 217 and the variable portion floor extending member 277 in a predetermined shape (eg, a curved shape).

[0179] Fig.13A and Fig. 13B is a cross-sectional view illustrating a mounting structure of a fixing portion joint of a joint unit of a joint structure applied to a vehicle body according to an exemplary embodiment.

[0180] like Fig.13A As shown, the fixing portion joint 331 of the front body module 110 is installed outside the fixing portion closed cross-section 141 of the fixing portion roof rail assembly 131 .

[0181] The fixing portion joint 331 may be connected to the fixing portion top cover 113 at the outer side of the fixing portion closed cross section 141 formed by the fixing portion top cover 113 , the fixing portion roof panel 121 , and the fixing portion roof rail 133 connected to each other.

[0182] like Fig. 13B As shown, the fixing portion joint 331 is installed on the outside of the fixing portion closed cross section 161 of the fixing portion center pillar assembly 151 .

[0183] The fixing portion joint 331 may be connected to the fixing portion column cover 115 at an outer side of the fixing portion closed cross-section 161 formed by the fixing portion column cover 115 and the fixing portion center column 153 coupled together.

[0184] Fig.14A and Fig. 14B is a cross-sectional view illustrating a mounting structure of a variable portion joint of a joint unit of a joint structure applied to a vehicle body according to an exemplary embodiment.

[0185] like Fig.14A As shown, the variable portion joint 351 of the rear body module 210 is connected to the inner side of the variable portion closed cross-section 241 of the variable portion roof rail assembly 231 .

[0186] The variable portion joint 351 may be connected to the inner side of the variable portion closed cross-section 241 formed by the variable portion top cover 213 , the variable portion roof panel 221 , the variable portion roof rail 233 , and the variable portion rail extension member 235 connected to each other.

[0187] like Fig. 14B As shown, the variable portion joint 351 is connected to the inner side of the variable portion closed cross-section 261 of the variable portion center pillar assembly 251 .

[0188] The variable portion joint 351 may be connected to the inner side of the variable portion closed cross-section 261 formed by the variable portion pillar cover 215 and the variable portion center pillar 253 connected to each other.

[0189] The variable portion top cover 213 and the variable portion column cover 215 include joint passing holes 213 a and 215 a respectively formed at a position corresponding to each variable portion joint 351 .

[0190] In the front vehicle body module 110 configured as above, Figure 3 and Figure 4 As shown, a latch assembly 510 according to one embodiment of the present disclosure is mounted to the fixed portion roof rail assembly 131 .

[0191] Fig.15A and Fig. 15B is a cross-sectional view illustrating a mounting structure of a latch assembly applied to an engagement structure of a vehicle body according to an exemplary embodiment.

[0192] like Fig.15A and Fig. 15B As shown, the latch assembly 510 is installed inside the fixed portion closed cross-section 141 of the fixed portion roof rail assembly 131 .

[0193] The latch assembly 510 is configured to selectively lock or unlock a related component (e.g., a striker). The latch assembly 510 includes a latch component 511 connected to or separated from a related component, and a latch locking component 513 that locks or unlocks the latch component 511. In the above, the latch locking component 513 can lock or unlock the latch component 511 by an actuator 514 that receives an electrical signal and operates.

[0194] Since the structure of the latch assembly 510 as described above is obvious to those skilled in the art, a detailed description will be omitted.

[0195] like Figure 3 , Figure 4 , Fig.15A and Fig. 15B As shown, the latch assembly 510 may be mounted at an inner side of the fixed portion closed cross-section 141 of the fixed portion roof rail assembly 131 through a latch mounting unit 531 .

[0196] The latch mounting unit 531 is configured to mount the latch assembly 510 inside the fixed portion closed cross section 141 in the fixed portion roof rail assembly 131. The latch mounting unit 531 ensures mounting strength of the latch assembly 510 and distributes load concentrated on the latch assembly 510.

[0197] The latch mounting unit 531 is connected to the inner side of the fixed portion closed cross section 141 in the fixed portion roof rail assembly 131 and is connected to the latch assembly 510. The latch mounting unit 531 includes a latch mounting bulkhead 533 and a pair of supporting bulkheads 535.

[0198] The latch mounting bulkhead 533 is connected to the fixed portion roof cover 113 and the fixed portion roof rail 133 , and is connected to the latch assembly 510 .

[0199] The support partition 535 is connected to both sides of the latch installation partition 533 , the latch installation partition 533 is between the two support partitions 535 , and the support partition 535 is connected to the fixing portion top cover 113 .

[0200] The fixing portion cover 113 includes a striker passing hole 113 a formed at a position corresponding to the latch assembly 510 .

[0201] like Figure 8 and Fig. 9 As shown, in the rear body module 210 , a striker 410 according to one embodiment of the present disclosure is installed on the variable portion roof rail assembly 231 .

[0202] The striker 410 is configured to Figure 3 and Figure 4 The latch assembly 510 is shown locked or unlocked.

[0203] Fig.16 is a cross-sectional view illustrating a mounting structure of a striker of a joining structure applied to a vehicle body according to an exemplary embodiment.

[0204] like Figure 8 , Fig. 9 and Fig.16 As shown, the striker 410 is installed at the outer side of the variable portion closed cross section 241 in the variable portion roof rail assembly 231. The striker 410 is connected to the variable portion top cover 213 at the outer side of the variable portion closed cross section 241.

[0205] The striker 410 may be installed on the variable portion top cover 213 from the outside of the variable portion closed cross-section 241 through the striker installation unit 431 .

[0206] The striker mounting unit 431 is configured to mount the striker 410 outside the variable portion closed cross section 241 in the variable portion roof rail assembly 231. The striker mounting unit 431 ensures mounting strength of the striker 410 and is configured to distribute load concentrated on the striker 410.

[0207] The striker mounting unit 431 is connected to the inner side of the variable portion closed cross-section 241 in the variable portion roof rail assembly 231 and is connected to the striker 410 . The striker mounting unit 431 includes a striker mounting bulkhead 433 .

[0208] The striker mounting bulkhead 433 is connected to the variable portion roof cover 213 , the variable portion roof rail 233 , and the variable portion roof rail extension member 235 , and is connected to the striker 410 with the variable portion roof cover 213 therebetween.

[0209] On the other hand, in the front vehicle body module 110 configured as above, Figure 3 and Figure 4 As shown, the fixing portion inner sealing member 610 according to one embodiment of the present disclosure is installed on the fixing portion roof rail assembly 131 , the fixing portion center pillar assembly 151 , and the fixing portion floor assembly 171 .

[0210] The fixing portion inner sealing member 610 may be provided in a closed shape. Figure 5 and Fig.15A As shown, the fixed portion inner sealing member 610 is installed on the fixed portion sealing flange 114 of the fixed portion top cover 113 in the fixed portion roof rail assembly 131. Figure 6 As shown, the fixed portion inner sealing member 610 is installed on the fixed portion sealing flange 116 of the fixed portion column cover 115 in the fixed portion middle column assembly 151. Figure 7As shown, the fixed portion inner sealing member 610 is installed on the fixed portion sealing flange 176 of the fixed portion upper cross beam 175 in the fixed portion floor assembly 171 .

[0211] Furthermore, in the rear body module 210 configured as described above, as Figure 8 and Fig. 9 As shown, the variable portion inner sealing member 710 according to one embodiment of the present disclosure is installed on the variable portion roof rail assembly 231 , the variable portion center pillar assembly 251 , and the variable portion floor assembly 271 .

[0212] The variable portion inner sealing member 710 may be provided in a closed shape. Fig.10 and Fig.16 As shown, the variable portion inner sealing member 710 is installed on the variable portion top cover 213 and the variable portion sealing flanges 214 and 234 of the variable portion roof rail 233 in the variable portion roof rail assembly 231. Fig.11 As shown, the variable portion inner sealing member 710 is installed on the variable portion column cover 215 in the variable portion center column assembly 251 and the variable portion sealing flanges 216 and 254 of the variable portion center column 253. Fig.12 As shown, the variable portion inner sealing member 710 is installed on the variable portion floor cover 217 and the variable portion sealing flanges 218 and 278 of the variable portion floor extension member 277 in the variable portion floor assembly 271 .

[0213] Figures 17 to 22 2 is a drawing explaining the operation of a joining structure of a vehicle body according to an exemplary embodiment.

[0214] In the following, reference will be made to Figures 1 to 22 The operation of the joint structure 100 configured as described above is described in detail according to an exemplary embodiment.

[0215] refer to Figures 1 to 16 , the front body module 110 is fixed to the front portion of the lower body 1. The rear body module 210 is separate from the front body module 110.

[0216] At the rear of the front body module 110 , the fixing portion joint 331 of the joint unit 310 is connected to the outside of the fixing portion closed cross section 141 of the fixing portion roof rail assembly 131 and the outside of the fixing portion closed cross section 161 of the fixing portion center pillar assembly 151 .

[0217] Furthermore, at the rear portion of the front vehicle body module 110 , a latch assembly 510 is connected to the inner side of the fixing portion closed cross-section 141 of the fixing portion roof rail assembly 131 .

[0218] At the rear of the front vehicle body module 110 , the fixing portion inner sealing member 610 is connected to fixing portion sealing flanges 114 , 116 , and 176 formed in the fixing portion roof rail assembly 131 , the fixing portion center pillar assembly 151 , and the fixing portion floor assembly 171 , respectively.

[0219] At the front of the rear body module 210 , the variable portion joint 351 of the joint unit 310 is connected to the inner side of the variable portion closed cross section 241 of the variable portion roof rail assembly 231 and the inner side of the variable portion closed cross section 261 of the variable portion center pillar assembly 251 .

[0220] At the front portion of the rear body module 210 , a striker 410 is installed outside the variable portion closed cross-section 241 of the variable portion roof rail assembly 231 .

[0221] At the front of the rear body module 210 , the variable portion inner sealing member 710 is mounted on the variable portion sealing flanges 214 , 216 , 218 , 234 , 254 and 278 formed on the variable portion roof rail assembly 231 , the variable portion center pillar assembly 251 and the variable portion floor assembly 271 , respectively.

[0222] In this state, the rear body module 210 moves downward from the rear side of the lower body 1 and moves toward the front body module 110 .

[0223] Then, if Fig.17 and Fig.18 As shown, the fixing portion joint 331 is inserted into the joint passing holes 213 a and 215 a of the variable portion top cover 213 and the variable portion column cover 215 .

[0224] The fixed portion joint 331 and the variable portion joint 351 are commonly coupled at an inner side of the variable portion closed cross section 241 of the variable portion roof rail assembly 231 and an inner side of the variable portion closed cross section 261 of the variable portion center pillar assembly 251 .

[0225] In this process, if Fig.19 As shown, the striker 410 is inserted into the striker through hole 113 a of the fixing portion top cover 113 . Therefore, the striker 410 is coupled to the latch assembly 510 at the inner side of the fixing portion closed cross section 141 of the fixing portion roof rail assembly 131 .

[0226] The striker 410 is installed outside the variable portion closed cross-section 241 through the striker installation spacer 433 of the striker installation unit 431. Therefore, the striker installation unit 431 can distribute the load concentrated on the striker 410 while ensuring the installation strength of the striker 410.

[0227] And, the latch assembly 510 is installed inside the fixed portion closed cross section 141 through the latch installation partition 533 and the support partition 535 of the latch installation unit 531. Therefore, the latch installation unit 531 can distribute the load concentrated on the latch assembly 510 while ensuring the installation strength of the latch assembly 510.

[0228] The moisture flowing into the inside of the fixing portion closed cross section 141 through the striker passing hole 113a may be blocked by the latch mounting unit 531. Therefore, the latch mounting unit 531 may prevent the moisture from flowing into the fixing portion roof rail 133 in the vehicle width direction.

[0229] In the above process, if Figures 19 to 21 As shown, the fixed portion inner sealing member 610 and the variable portion inner sealing member 710 are in close contact with each other, and seal the inner sides of the front body module 110 and the rear body module 210 coupled to each other.

[0230] like Fig.19 As shown, the fixed portion inner sealing member 610 and the variable portion inner sealing member 710 can seal between the fixed portion roof rail assembly 131 and the variable portion roof rail assembly 231. Fig. 20 As shown, the fixed portion inner sealing member 610 and the variable portion inner sealing member 710 can seal between the fixed portion center pillar assembly 151 and the variable portion center pillar assembly 251. Fig.21 As shown, the fixed portion inner sealing member 610 and the variable portion inner sealing member 710 may seal between the fixed portion floor assembly 171 and the variable portion floor assembly 271 .

[0231] At the same time, if Figure 2 As shown, outer sides of the front body module 110 and the rear body module 210 coupled to each other may be sealed by a molding member 810 and an outer sealing member 910 .

[0232] The joint structure 100 according to the above exemplary embodiment may combine the front body module 110 and the rear body module 210 together through the fixed portion joint 331 and the variable portion joint 351 of the joint unit 310 .

[0233] Furthermore, the joint structure 100 according to an exemplary embodiment may combine the front body module 110 and the rear body module 210 together through the striker 410 and the latch assembly 510 .

[0234] Therefore, even if the connection force between the fixed portion joint 331 and the variable portion joint 351 is insufficient or lost, the striker 410 and the latch assembly 510 can prevent the front body module 110 from being separated from the rear body module 210 .

[0235] Also, according to an exemplary embodiment, the joint structure 100 may seal the inside and outside of the front body module 110 and the rear body module 210 coupled to each other through the fixed portion inner sealing member 610 , the variable portion inner sealing member 710 , the molding member 810 , and the outer sealing member 910 .

[0236] As a result, the joint structure 100 according to one exemplary embodiment may ensure sealing performance and waterproof performance of the front body module 110 and the rear body module 210 coupled to each other.

[0237] At the same time, the fixed portion sealing flanges 114, 116 and 176 of the front body module 110 and the variable portion sealing flanges 214, 216, 218, 234, 254 and 278 of the rear body module 210 can prevent the rotation of the rear body module 210 even if the coupling force between the front body module 110 and the rear body module 210 is insufficient or lost.

[0238] For example, Fig. 22 As shown, the fixed portion sealing flange 114 of the fixed portion roof rail assembly 131 and the variable portion sealing flanges 214 and 234 of the variable portion roof rail assembly 231 may be provided as a stopper 990 to prevent the rear body module 210 from rotating relative to the front body module 110 (see Figure 1 ).

[0239] According to the joining structure 100 of an exemplary embodiment, the front body module 110 as the fixing portion 110 a is coupled to the front portion of the lower body 1 as is, and the rear body module 210 as the variable portion 210 a can be coupled to the upper portion of the lower body 1 and the rear portion of the front body module 110 .

[0240] Therefore, according to an exemplary embodiment, the joint structure 100 replaces the rear body module 210 of a predetermined shape based on the customized service type (eg, use case) of the PBV, and the PBV may be a call type vehicle or a delivery type vehicle.

[0241] As a result, the joint structure 100 according to an exemplary embodiment can reduce the cost of configuring a vehicle body to accommodate various customized services of a PBV.

[0242] Furthermore, the joint structure 100 according to one exemplary embodiment may smoothly distribute load input to the front body module 110 and the rear body module 210 coupled to each other, thereby improving collision performance and torsional strength of a vehicle body, and the like.

[0243] Although the embodiments of the present invention have been described in conjunction with what are currently considered to be practical exemplary embodiments, it should be understood that the embodiments of the present invention are not limited to the disclosed embodiments. Instead, they are intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A vehicle body joint structure, the vehicle body comprising a front vehicle body module fixed to a lower vehicle body and a rear vehicle body module detachably coupled to the front vehicle body module in a front-rear direction of the vehicle body, the joint structure comprising: A joint unit, the joint unit being respectively arranged at the rear portion of the front body module and the front portion of the rear body module; a striker mounted on an outer side of a first closed cross-section defined in either a rear portion of the front body module or a front portion of the rear body module; and A latch assembly is disposed inside a second closed cross-section defined in the other of the rear portion of the front body module and the front portion of the rear body module.

2. The joining structure according to claim 1, wherein: The front vehicle body module includes a fixed portion roof rail assembly having a fixed portion closed cross-section connected to a fixed portion roof panel; and The rear body module includes a variable portion roof rail assembly having a variable portion closed cross-section connected to a variable portion roof panel.

3. The joining structure according to claim 2, wherein: The striker is installed outside the closed cross section of the variable portion; and The latch assembly is installed at the inner side of the closed cross section of the fixing portion.

4. The joining structure according to claim 3, wherein: The striker is locked and unlocked with the latch assembly through a striker passing hole provided in the fixing portion roof rail assembly.

5. The joining structure according to claim 2, wherein: The front vehicle body module includes a latch mounting unit connected to the inner side of the closed cross section of the fixing portion and connected to the latch assembly; and The rear vehicle body module includes a striker mounting unit connected to an inner side of the variable portion closed cross-section and connected to the striker.

6. The joining structure according to claim 5, wherein: The fixed portion roof rail assembly comprises: A fixed portion roof rail connected to the fixed portion roof panel; and A fixed portion roof cover is connected to the fixed portion roof panel and the fixed portion roof rail.

7. The joining structure according to claim 6, wherein: The latch mounting unit comprises: a latch mounting bulkhead connected to the fixed portion roof rail and the fixed portion top cover and connected to the latch assembly; and A pair of supporting baffles, each supporting baffle is connected to both sides of the latch mounting baffle so that the latch mounting baffle is located between the pair of supporting baffles, and each supporting baffle is connected to the fixing portion top cover.

8. The joining structure according to claim 5, wherein: The variable portion roof rail assembly comprises: a variable portion roof rail connected to the variable portion roof panel; a variable portion roof rail extension member connected to the variable portion roof rail; and A variable portion roof cover is combined with the variable portion roof panel and the variable portion side member extension member.

9. The joining structure according to claim 8, wherein: The striker mounting unit includes a striker mounting bulkhead connected to the variable portion roof rail, the variable portion roof rail extension member, and the variable portion roof cover, and connected to the striker via the variable portion roof cover therebetween.

10. A joint structure of a vehicle body, the vehicle body comprising a front vehicle body module fixed to a lower vehicle body and a rear vehicle body module detachably coupled to the front vehicle body module in a front-rear direction of the vehicle body, the joint structure comprising: A joint unit, the joint unit being respectively arranged at the rear portion of the front body module and the front portion of the rear body module; a fixing portion sealing flange, the fixing portion sealing flange being disposed on a fixing portion roof rail assembly, a fixing portion center pillar assembly, and a fixing portion floor assembly to install a fixing portion inner sealing member, the fixing portion roof rail assembly, the fixing portion center pillar assembly, and the fixing portion floor assembly being respectively connected to a rear portion of the front vehicle body module; as well as A variable portion sealing flange is provided on a variable portion roof rail assembly, a variable portion center pillar assembly, and a variable portion floor assembly to install a variable portion inner sealing member, wherein the variable portion roof rail assembly, the variable portion center pillar assembly, and the variable portion floor assembly are respectively connected to the front portion of the rear body module.

11. The joining structure according to claim 10, wherein: The fixed portion roof rail assembly includes a fixed portion roof rail connected to a fixed portion roof panel, and a fixed portion top cover connected to the fixed portion roof panel and the fixed portion roof rail; and The variable portion roof rail assembly includes a variable portion roof rail connected to a variable portion roof panel, a variable portion roof rail extension member connected to the variable portion roof rail, and a variable portion roof cover connected to the variable portion roof panel and the variable portion roof rail extension member.

12. The joining structure according to claim 11, wherein: The fixing portion sealing flange is disposed on the fixing portion top cover; and The variable portion sealing flange is provided on the variable portion roof rail and the variable portion roof cover.

13. The joining structure according to claim 10, wherein: The fixed portion center pillar assembly includes a fixed portion center pillar and a fixed portion pillar cover connected to the fixed portion center pillar; and The variable portion center pillar assembly includes a variable portion center pillar and a variable portion pillar cover connected to the variable portion center pillar.

14. The joining structure according to claim 13, wherein: The fixing portion sealing flange is disposed on the fixing portion column cover; and The variable portion sealing flange is disposed on the variable portion center pillar and the variable portion pillar cover.

15. The joining structure according to claim 10, wherein: The fixed portion floor assembly includes a fixed portion upper cross member connected to a fixed portion floor panel; and The variable portion floor assembly includes a variable portion upper cross member connected to a variable portion floor panel, a variable portion floor extension member connected to the variable portion upper cross member, and a variable portion floor cover connected to the variable portion floor panel and the variable portion upper cross member.

16. The joining structure according to claim 15, wherein: The fixing portion sealing flange is disposed on the fixing portion upper cross beam; and The variable portion sealing flange is provided on the variable portion floor extending member and the variable portion floor cover.

17. The joining structure according to claim 10, wherein: The fixed portion sealing flange and the variable portion sealing flange are configured to function as stoppers to prevent the rear body module from rotating.

18. A vehicle body, comprising: Lower body; a front body module coupled to the lower body, the front body module including a fixed portion roof rail assembly having a fixed portion closed cross-section connected to a fixed portion roof panel; a rear body module detachably coupled to the front body module in a front-rear direction of the vehicle body, the rear body module including a variable portion roof rail assembly having a variable portion closed cross-section connected to a variable portion roof panel; A joint unit, the joint unit being respectively arranged at the rear portion of the front body module and the front portion of the rear body module; a striker mounted outside a first closed cross-section defined in either a rear portion of the front body module or a front portion of the rear body module; a latch assembly disposed inside a second closed cross-section defined in the other of the rear portion of the front body module and the front portion of the rear body module; a fixing portion sealing flange, the fixing portion sealing flange being disposed on the fixing portion roof rail assembly, the fixing portion center pillar assembly and the fixing portion floor assembly to install a fixing portion inner sealing member, the fixing portion roof rail assembly, the fixing portion center pillar assembly and the fixing portion floor assembly being respectively connected to the rear portion of the front vehicle body module; as well as A variable portion sealing flange is provided on the variable portion roof rail assembly, the variable portion center pillar assembly and the variable portion floor assembly to install a variable portion inner sealing member, the variable portion roof rail assembly, the variable portion center pillar assembly and the variable portion floor assembly are respectively connected to the front portion of the rear body module.

19. A vehicle body according to claim 18, wherein: The striker is mounted on the outside of the closed cross section of the variable portion; The latch assembly is mounted on the inner side of the closed cross section of the fixing portion; The fixed portion roof rail assembly includes a fixed portion roof rail connected to the fixed portion roof panel, and a fixed portion top cover connected to the fixed portion roof panel and the fixed portion roof rail; and The variable portion roof rail assembly includes a variable portion roof rail connected to the variable portion roof panel, a variable portion roof rail extension member connected to the variable portion roof rail, and a variable portion roof cover connected to the variable portion roof panel and the variable portion roof rail extension member; The fixing portion sealing flange is disposed on the fixing portion top cover; and The variable portion sealing flange is provided on the variable portion roof rail and the variable portion roof cover.

20. The vehicle body of claim 18, wherein: The front vehicle body module includes a latch mounting unit connected to the inner side of the closed cross section of the fixing portion and connected to the latch assembly; The rear vehicle body module includes a striker mounting unit connected to the inner side of the variable portion closed cross section and connected to the striker; The fixed portion center column assembly includes a fixed portion center column and a fixed portion column cover connected to the fixed portion center column; The variable portion center pillar assembly includes a variable portion center pillar and a variable portion pillar cover connected to the variable portion center pillar; The fixing portion sealing flange is disposed on the fixing portion column cover; and The variable portion sealing flange is disposed on the variable portion center pillar and the variable portion pillar cover.

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