Vehicle frame arrangement

Abstract

A vehicle frame assembly comprising a plurality of vehicle body cross members (210-250) arranged on a vehicle body floor (20) of a vehicle and extending in a width direction of the vehicle, a vehicle body side longitudinal member (300) arranged on the outside of the vehicle in an outward direction of the vehicle body cross members (210-250), connected to the vehicle body cross members (210-250), and extending in a longitudinal direction of the vehicle, and a support member (400) having extension ends extending from a center of the support member (400) in a plurality of directions, each of the extension ends connecting at least one of the plurality of vehicle body cross members (210-250) to the vehicle body side longitudinal member (300), and wherein the plurality of vehicle body cross members (210-250),the vehicle body side member (300) and the support element (400) are connected to each other to define a load path for a side collision of the vehicle.,

Description

[0001] The invention relates to a vehicle frame assembly.

[0002] Recently, the PBV has been introduced as a modular device with a simple structure, suitable for developing according to various customer requirements at customer demand. The PBV is an environmentally friendly, versatile mobility vehicle that can be provided at low cost depending on the customer's needs and company requirements. With increasing market demands, the need for small-scale production of various types of vehicles is growing.

[0003] Accordingly, the PBV adopts a structure in which a versatile vehicle body, designed with call and / or delivery characteristics in mind, is coupled to an upper portion of a chassis frame to ensure convenient passenger boarding and baggage loading. With the adoption of the above structure, a sliding door is used in the PBV to further improve the convenience of passenger boarding and baggage loading. For this reason, the vehicle body side members are positioned lower than the floor cross member.

[0004] At this point, since the vehicle body side longitudinal members are arranged lower than the floor cross member, the height difference between the floor cross member and the vehicle body side longitudinal member reinforcing structure may increase, thereby causing a problem that a structure for adapting to a side collision of the vehicle is weak.

[0005] Accordingly, there is a need to provide a solution for realizing a load path for a side collision of a vehicle by reducing the height difference between the floor cross member and the To provide vehicle body side member reinforcement structure.

[0006] The invention relates to a vehicle frame assembly, and more particularly to a vehicle frame assembly utilizing a sliding door, in which a load path for a side collision of a vehicle is formed by an effective connection structure between vehicle body cross members, vehicle body side rails, and support members to maximize torsional strength / stiffness and connectivity of the vehicle.

[0007] Therefore, the invention provides a vehicle frame assembly using a sliding door, in which a load path for a side collision of the vehicle is formed by an effective connection structure between vehicle body cross members, vehicle body side rails and support members, with the result that the torsional strength / rigidity and the connectability of the vehicle are maximized and an excessive load exerted on the lower frame of the vehicle is distributed to the various members to thereby improve the stability of a battery in the side collision of the vehicle.

[0008] The embodiments of the present invention are not limited to the above-mentioned embodiments, and other embodiments of the present invention not mentioned above will be clearly understood by those skilled in the art to which the present invention belongs from the following description.

[0009] According to one embodiment of the invention, a vehicle frame assembly is provided, comprising a plurality of vehicle body cross members provided on a vehicle body floor of a vehicle and extending in a width direction of the vehicle, a vehicle body side longitudinal member provided on the outside of the vehicle in an outward direction of the vehicle body cross members, connected to the vehicle body cross members and extending in a longitudinal direction of the vehicle, and a support member having extension ends (e.g.extension ends) extending from a center thereof in a plurality of directions, each of the extension ends connecting at least one of the plurality of vehicle body cross members to the vehicle body side rail, and wherein the plurality of vehicle body cross members, the vehicle body side rail, and the support member are connected to each other to form a load path for a side collision of the vehicle.

[0010] Each of the plurality of vehicle body cross members may be connected to an inner surface of the vehicle body side member in a state of being in surface contact therewith.

[0011] The vehicle frame assembly may further include a chassis frame provided at a lower portion of a vehicle body, the chassis frame being disposed inward in a vehicle direction, and a battery pack mounted on the chassis frame.

[0012] The chassis frame may have a plurality of mounting portions extending outwardly, and each of the vehicle body floor and the plurality of vehicle body cross members is fixed by means of a bolt (e.g., a screw bolt) to a corresponding one of the plurality of mounting portions and is thus connected to the chassis frame.

[0013] The chassis frame may be detachably coupled to the plurality of vehicle body cross members and the vehicle body side member.

[0014] All of the plurality of vehicle body cross members, the vehicle body side member and the support member may be connected to the vehicle body floor of the vehicle.

[0015] Among the extension ends of the support member, two of the extension ends may extend obliquely from the center thereof and may be connected to two adjacent vehicle body cross members, and another of the extension ends may extend outward and may be connected to the vehicle body side longitudinal member.

[0016] The vehicle frame assembly may further include a center side member disposed at the center of the support member and connecting at least two of the plurality of vehicle body cross members in the longitudinal direction of the vehicle, and the center side member may be parallel to the vehicle body side member.

[0017] The vehicle frame assembly may further include an extension member extending in the width direction of the vehicle and connecting the center side rail to the vehicle body side rail, and the plurality of vehicle body cross members, the vehicle body side rail, the extension member, and the center side rail may be connected to each other to form the load path for a side collision of the vehicle.

[0018] The support member may comprise a plurality of support members spaced apart from one another in the longitudinal direction of the vehicle and positioned in a direction identical to a direction in which the central side longitudinal member is positioned.

[0019] The vehicle frame assembly may further include an upper door panel provided above the vehicle body side member and connected to the vehicle body floor, and a lower door panel provided below the upper door panel and coupled to the upper door panel at a portion abutting against the upper door panel, the upper door panel and the lower door panel defining therebetween an interior space receiving therein a door arm configured to enable a sliding door of the vehicle to be opened and closed.

[0020] Each of the upper door panel and the lower door panel may be connected to the vehicle body side member at a first side thereof and may have a shape which increases in width from a rear portion thereof toward a center thereof.

[0021] The center side member may be coupled to the lower door panel to allow a load caused by a side collision of the vehicle to be transferred to the lower door panel.

[0022] The invention is explained in more detail with reference to the drawing. The drawing shows: Fig. 1 is a view of a vehicle frame assembly according to an embodiment of the invention; Fig. 2 is a view of a load path of the vehicle frame assembly according to an embodiment of the invention during a side collision of a vehicle; Fig. 3 is a view of a central side member and an upper door panel according to an embodiment of the invention; Fig. 4 is a longitudinal sectional view of a portion of the vehicle in which the upper door panel and a lower door panel are provided according to an embodiment of the invention; Fig. 5 is a view of a triangular cross-sectional structure defined by vehicle body cross members, support members, and a center side rail according to an embodiment of the invention; Fig. 6 and Fig. 7 views of a partition wall formed by welding a B-pillar to the upper door panel and the lower door panel according to an embodiment of the invention; and Fig. 8 and Fig. 9 views of an extension element according to an embodiment of the invention.

[0023] Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are shown in the accompanying drawings. Wherever possible, the same reference numerals are used throughout the drawings to refer to the same or like parts.

[0024] With reference to the accompanying drawings, a detailed description will be given according to the exemplary embodiments disclosed herein. For the sake of brevity of the description with reference to the drawings, the same or equivalent components may be denoted by the same reference numerals, and a description thereof will not be repeated.

[0025] In general, suffixes such as "module" and "unit," when used in the following description, may be used to designate elements or components for ease of illustration of the application. The use of such suffixes herein is intended solely to facilitate the description of the application, and the suffixes do not imply any specific meaning or function.

[0026] Furthermore, in the following description of the embodiments disclosed herein, when it is determined that a detailed explanation of known functions or configurations related to the embodiments of the invention would make the subject matter of the embodiments unclear, such a detailed description will be omitted. The accompanying drawings are used to assist in the easy understanding of various technical features, and it is to be understood that the embodiments illustrated herein are not limited to the accompanying drawings. As such, the embodiments of the present disclosure should be interpreted to extend to any changes, modifications, and substitutions in addition to those specifically shown in the accompanying drawings. It is to be understood that although the terms "first," "second," etc.may be used herein to describe various elements, these elements should not be construed as being limited to these terms. These terms are used merely to distinguish one element from another.

[0027] It is understood that when an element is described as "connected to" another element, there may be intervening elements, or the element may be directly connected to the other element. Conversely, when an element is described as "directly connected to" another element, there are no intervening elements.

[0028] A singular representation may include a plural representation unless the context clearly indicates otherwise.

[0029] Terms such as "comprises" or "has" used herein should be considered to indicate the presence of various features, numbers, steps, functions, elements, components, or combinations thereof disclosed in the application, but it should be understood that the presence or addition of one or more features, numbers, steps, functions, elements, components, or combinations thereof is not precluded.

[0030] Hereinafter, embodiments of the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the accompanying drawings.

[0031] An embodiment of the present invention proposes a structure in which vehicle body side members, a battery cross member, a chassis frame, and a floor cross member form a load path in a side collision of a vehicle.

[0032] Fig. 1 is a view of a vehicle frame assembly according to an embodiment of the invention. Although Fig. 1 mainly shows components associated with the embodiment, it is understood that more or fewer components may be involved in the realization of an actual vehicle frame assembly.

[0033] With reference to Fig. 1, the vehicle frame assembly according to an embodiment of the invention may include a vehicle body cross member, vehicle body side rails 300, and a support member 400.

[0034] First, the vehicle body cross member may include a plurality of vehicle body cross members provided on a vehicle body floor 20, arranged from the front to the rear of the vehicle body floor 20 and extending laterally. The vehicle body cross member may be divided, from the front of the vehicle, into a first vehicle body cross member 210, a second vehicle body cross member 220, a third vehicle body cross member 230, a fourth vehicle body cross member 240, and a fifth vehicle body cross member 250. Since the plurality of vehicle body cross members are arranged at regular intervals from each other, the impact force caused by a side collision of the vehicle can be dispersed in multiple directions, thereby distributing the load exerted on the lower frame of the vehicle to various members.

[0035] A chassis frame 100 may be provided at the lower portion of the vehicle body and may be disposed on a more inner side of the vehicle than the vehicle body side rail 300, and a battery pack 10 may be mounted on the chassis frame 100. The battery pack 10 of the vehicle may be positioned at the lowest portion of the vehicle to position the center of gravity of the vehicle at the lowest level and may be supported on a lateral side thereof by the chassis frame 100. Consequently, it is possible to reduce the load exerted on the battery pack 10 in a side collision of the vehicle.

[0036] The vehicle is provided with a plurality of mounting portions extending outward in a direction of the chassis frame 100 and fixed by bolts, respectively, to the vehicle body floor 20 and the vehicle body cross member. More specifically, a first mounting portion A, provided at the front of the chassis frame 100, may be coupled to the lower end of the vehicle body floor 20, and a second mounting portion B, provided at the rear of the chassis frame 100, may be coupled to the fifth vehicle body cross member 250, thereby maximizing the torsional strength / rigidity and the connectability of the vehicle. The chassis frame 100 may be configured to be separable from the vehicle body cross member and the vehicle body side members 300.

[0037] The vehicle body side members 300 may be provided on the outer side of the vehicle in correspondence with the vehicle body cross member, and may be connected to the vehicle body cross member and extend in a longitudinal direction of the vehicle. The vehicle body side members 300 may be connected at the inner surfaces thereof to the two ends of the vehicle body cross member, thereby maximizing the strength / rigidity of the lower end of the vehicle body floor 20. As a result, since a load applied to the vehicle body side members 300 is directly transmitted to the respective associated vehicle body cross members upon a side collision of the vehicle, the load is not excessively applied and is distributed, thereby increasing the overall frame strength / rigidity.

[0038] The support element is described below with reference to Fig. 2 described.

[0039] Fig. 2 is a view of the load path of the vehicle frame assembly according to an embodiment of the invention during a side collision of a vehicle.

[0040] With reference to Fig. 2, the support member 400 is provided with extension ends extending from the center thereof in multiple directions to define a Y-shape. The extension ends of the support member 400 can connect at least one vehicle body cross member to the vehicle body side member 300. As shown in Fig. 2, among the extension ends, inner extension ends may extend obliquely from the center of the support member 400 and may be connected to two vehicle body cross members, while an outer extension end may extend outward and may be connected to the vehicle body side longitudinal member 300.

[0041] In one embodiment, the support member 400 may connect two adjacent vehicle body cross members among the five vehicle body cross members, that is, the first vehicle body cross member 210 to the fifth vehicle body cross member 250, to the vehicle body side member 300. Furthermore, since the support member 400 includes a plurality of support members 400, it is possible to more efficiently distribute the load caused by a side collision of the vehicle. Due to the connection structure of the support members 400, the vehicle body cross members, the vehicle body side member 300, and the support members 400 are connected to each other to form a load path for a side collision of the vehicle.

[0042] Fig. 3 is a view of a center side rail 310 and an upper door panel 31 according to an embodiment of the invention. Fig. 4 is a longitudinal sectional view of a portion of the vehicle in which the upper door panel 31 and a lower door panel 30 according to an embodiment of the invention are provided.

[0043] With reference to the Fig. 3 and Fig. 4, the upper door panel 31 may be provided above the vehicle body side member 300 and connected to the vehicle body floor 20. The upper door panel 31 may connect a B-pillar 40 at the front thereof to a C-pillar 50 at the rear thereof to form an efficient connection structure with the vehicle frame and maximize the torsional strength / rigidity and connectivity of the vehicle. The lower door panel 30 may be provided below the upper door panel 31. The lower door panel 30 may be coupled to the center side member 310, which will be described later, to enable a load caused by a side collision of the vehicle to be transmitted to the lower door panel 30.

[0044] Specifically, the center side member 310 and the support member 400 may be arranged in this order on the inside of the vehicle in a direction from the lower door panel 30 inward. Here, since the lower surface of the center side member 310 contacts the lower ends of the support member 400 and the lower door panel 30, a load path structure is formed in which a load caused by a side collision of the vehicle is transmitted from the lower door panel 30 to the center side member 310 and then from the center side member 310 to the support member 400.

[0045] In addition, since the lower door panel 30 is provided thereon with a roller guide structure F of a door arm 32, the sliding door of the vehicle can be stably opened and closed.

[0046] Furthermore, the lower door panel 30 and the upper door panel 31 may be adjacent to each other at the peripheries thereof in a vertical direction and coupled to each other at the peripheries in a face-to-face manner to define an interior space. The interior space defined between the upper door panel 31 and the lower door panel 30 may be provided therein with the door arm 32, which allows the sliding door of the vehicle to be opened and closed in a downward direction of the upper door panel 31.

[0047] Due to the mounting structure of the door arm 32, it is possible to sufficiently compensate for a problem of connectability, whereby the vehicle body side member 300 is positioned at a lower level and a sliding door is used.

[0048] Each of the upper door panel 31 and the lower door panel 30 may be connected to the vehicle body side sill 300 at one side thereof and configured to have a shape that increases in width from the rear portion thereof toward the center portion. This is to connect the center portions of the upper door panel 31 and the lower door panel 30 to the center side sill 310. Due to this connection structure, it is possible to evenly distribute a load caused by a side collision of the vehicle in a direction toward the inside of the vehicle.

[0049] Fig. 5 is a view of a triangular cross-sectional structure defined by the vehicle body cross members, the support members 400, and the center side member 310 according to an embodiment of the invention. The center side member 310 may connect at least two vehicle body cross members at the central portion of the support member 400 in the longitudinal direction of the vehicle. In one embodiment, for example, the center side member 310 may be configured to connect the second vehicle body cross member 220 and the fourth vehicle body cross member 240 under the vehicle body floor 20, as shown in Fig. 5. The center side member 310 may also be connected to the support member 400 at one side thereof to thereby contribute to increasing the torsional strength / stiffness of the vehicle.

[0050] With reference to Fig. 5, it is further possible to note the triangular cross-sectional structure D defined by the support member 400, the center side member 310, and the second vehicle body cross member 220 to the fourth vehicle body cross member 240 in a vehicle inboard direction. This three-point support structure allows a load applied to the lower frame of the vehicle to be distributed to the center side member 310 and the first vehicle body cross member 210 to the fifth vehicle body cross member 250, with the result that the load applied by each of the vehicle body cross members is very small, thereby improving the stability of a battery.

[0051] Here, each of the support members 400 may be positioned on the same side as the side where the center side member 310 is positioned. Since the support members 400, which connect two adjacent vehicle body cross members to each other to cope with a side collision of the vehicle, include a plurality of support members 400, it is possible to further increase the torsional strength / rigidity of the vehicle. Moreover, the plurality of support members 400 may be arranged in the same direction in the state of being spaced apart from each other in the longitudinal direction of the vehicle and connected to the center side member 310 at first sides thereof.

[0052] All of the plurality of vehicle body cross members, the vehicle body side members 300, and the support members 400 described above may be connected to the vehicle body floor 20 of the vehicle. With the popularization of PBVs in which the height of the vehicle body floor 20 is reduced, the vehicle body side member 300 is arranged at a lower level compared to a conventional vehicle, thereby weakening the structure for adapting to a side collision of the vehicle and also reducing the strength / rigidity of the vehicle body floor 20.Here, by connecting the vehicle body floor 20 to the plurality of vehicle body cross members, the vehicle body side members 300, and the support members 400, an excessive load applied to the lower frame of the vehicle is distributed to the various members to thereby increase the strength / rigidity of the lower end of the vehicle body floor 20.

[0053] The Fig. 6 and Fig. 7 are views of a partition wall formed by welding the B-pillar 40 to the upper door panel 31 and the lower door panel 30 according to an embodiment of the invention.

[0054] With reference to the Fig. 6 and Fig. 7 shows the partition wall E, which is formed by welding the B-pillar 40 to the upper door panel 31 and the lower door panel 30 and is closed in cross section. Due to the structure of the partition wall E, it is possible to prevent the concentration of excessive load on the upper door panel 31 and the lower door panel 30 and to distribute the load caused by a side collision to the B-pillar 40.

[0055] The Fig. 8 and Fig. 9 are views of an extension member 410 according to an embodiment of the invention.

[0056] With reference to the Fig. 8 and Fig.9, the extension member 410 may extend in the width direction of the vehicle to connect the center side member 310 to the vehicle body side member 300. In a vehicle structure in which the end of the vehicle body side member 300 is located at the lower end of the vehicle body cross member due to the use of a sliding door, it is possible to form a load path for a side collision of the vehicle by disposing the additional extension member 410. In this case, the vehicle body cross members, the vehicle body side members 300, the extension member 410, and the center side member 310 are connected to each other to form the load path for the side collision of the vehicle.

[0057] As is apparent from the above description, in a vehicle structure employing a sliding door, since a load path for a side collision of the vehicle is formed by the effective connection structure between the vehicle body cross members, the vehicle body side members, and the support members, the torsional strength / rigidity and the connection ability of the vehicle are maximized, and an excessive load applied to the lower frame of the vehicle is distributed to the various members to thereby improve the stability of a battery in the side collision of the vehicle.

[0058] The effects that can be achieved by the embodiments of the invention are not limited to the above-mentioned effects, and other effects of the embodiments of the invention not mentioned above will be clearly understood by those skilled in the art to which the invention belongs from the foregoing description.

Claims

[1] Vehicle frame assembly, comprising: a plurality of vehicle body cross members (210-250) arranged on a vehicle body floor (20) of a vehicle and extending in a width direction of the vehicle, a vehicle body side longitudinal member (300) disposed on the outside of the vehicle in a direction outward of the vehicle body cross members (210-250), connected to the vehicle body cross members (210-250) and extending in a longitudinal direction of the vehicle, and a support member (400) having extension ends extending from a center of the support member (400) in a plurality of directions, each of the extension ends connecting at least one of the plurality of vehicle body cross members (210-250) to the vehicle body side rail (300), and wherein the plurality of vehicle body cross members (210-250), the vehicle body side rail (300), and the support member (400) are connected to each other to define a load path for a side collision of the vehicle. [2] The vehicle frame assembly according to claim 1, wherein each of the plurality of vehicle body cross members (210-250) is connected to an inner surface of the vehicle body side sill (300) in a state of being in surface contact therewith. [3] The vehicle frame assembly according to claim 1 or 2, further comprising a chassis frame (100) disposed at a lower portion of a vehicle body, the chassis frame (100) being disposed inward in a vehicle direction and configured to mount a battery pack (10) thereon. [4] The vehicle frame assembly according to claim 3, wherein the chassis frame (100) has a plurality of mounting portions (A, B) extending outwardly, and wherein each of the vehicle body floor (20) and the plurality of vehicle body cross members (210-250) is fixed by a bolt to a corresponding one of the plurality of mounting portions (A, B) to be connected to the chassis frame (100). [5] A vehicle frame assembly according to claim 3 or 4, wherein the chassis frame (100) is detachably coupled to the plurality of vehicle body cross members (210-250) and the vehicle body side member (300). [6] A vehicle frame assembly according to any one of claims 1 to 5, wherein all of the plurality of vehicle body cross members (210-250), the vehicle body side member (300) and the support member (400) are connected to the vehicle body floor (20) of the vehicle. [7] A vehicle frame assembly according to any one of claims 1 to 6, wherein, among the extension ends of the support member (400), two of the extension ends extend obliquely from the center thereof and are connected to two adjacent vehicle body cross members (210-250), and another of the extension ends extends outward and is connected to the vehicle body side longitudinal member (300). [8] Vehicle frame assembly, comprising: a plurality of vehicle body cross members (210-250) arranged on a vehicle body floor (20) of a vehicle and extending in a width direction of the vehicle, a vehicle body side longitudinal member (300) arranged on the outside of the vehicle in a direction outward of the vehicle body cross members (210-250), connected to the vehicle body cross members (210-250) and extending in a longitudinal direction of the vehicle, a support member (400) having extension ends extending from a center of the support member (400) in a plurality of directions, each of the extension ends connecting at least one of the plurality of vehicle body cross members (210-250) to the vehicle body side rail (300), and wherein the plurality of vehicle body cross members (210-250), the vehicle body side rail (300), and the support member (400) are connected to each other to define a load path for a side collision of the vehicle, and a central side longitudinal member (310) disposed in the center of the support member (400) and connecting at least two of the plurality of vehicle body cross members (210-250) in the longitudinal direction of the vehicle, the central side longitudinal member (310) being parallel to the vehicle body side longitudinal member (300). [9] The vehicle frame assembly according to claim 8, further comprising an extension member (410) extending in the width direction of the vehicle and connecting the center side rail (310) to the vehicle body side rail (300), wherein the plurality of vehicle body cross members (210-250), the vehicle body side rail (300), the extension member (410) and the center side rail (310) are connected to each other to define the load path for the side collision of the vehicle. [10] A vehicle frame assembly according to claim 8 or 9, wherein the support member (400) comprises a plurality of support members (400) spaced apart from one another in the longitudinal direction of the vehicle and positioned in the same direction as the central side longitudinal member (310). [11] Vehicle frame assembly according to one of claims 8 to 10, further comprising: an upper door panel (31) arranged above the vehicle body side member (300) and connected to the vehicle body floor (20), and a lower door panel (30) disposed below the upper door panel (31) and coupled to the upper door panel (31) at a portion abutting against the upper door panel (31). [12] The vehicle frame assembly of claim 11, wherein the upper door panel (31) and the lower door panel (30) define an interior space therebetween configured to receive a door arm (32) configured to enable a sliding door of the vehicle to be opened and closed. [13] A vehicle frame assembly according to claim 11 or 12, wherein each of the upper door panel (31) and the lower door panel (30) is connected to the vehicle body side rail (300) at a first side thereof and has a shape which increases in width from a rear portion thereof toward a center thereof. [14] A vehicle frame assembly according to any one of claims 11 to 13, wherein the center side rail (310) is coupled to the lower door panel (30) to enable a load caused by the side collision of the vehicle to be transmitted to the lower door panel (30). [15] The vehicle frame assembly according to any one of claims 8 to 14, further comprising a chassis frame (100) disposed at a lower portion of a vehicle body, the chassis frame (100) being disposed inward in a vehicle direction and configured to mount a battery pack (10) thereon. [16] The vehicle frame assembly according to claim 15, wherein the chassis frame (100) has a plurality of mounting portions (A, B) extending outwardly, and wherein each of the vehicle body floor (20) and the plurality of vehicle body cross members (210-250) is fixed by means of a bolt to a corresponding one of the plurality of mounting portions (A, B) to be connected to the chassis frame (100). [17] A vehicle frame assembly according to claim 15 or 16, wherein the chassis frame (100) is detachably coupled to the plurality of vehicle body cross members (210-250) and the vehicle body side member (300). [18] A vehicle frame assembly according to any one of claims 8 to 17, wherein all of the plurality of vehicle body cross members (210-250), the vehicle body side member (300) and the support member (400) are connected to the vehicle body floor (20) of the vehicle. [19] A vehicle frame assembly according to any one of claims 8 to 18, wherein, among the extension ends of the support member (400), two of the extension ends extend obliquely from the center thereof and are connected to two adjacent vehicle body cross members (210-250), and another of the extension ends extends outwardly and is connected to the vehicle body side longitudinal member (300). [20] Vehicle comprising: a vehicle body having a vehicle body floor (20), a plurality of vehicle body cross members (210-250) arranged on the vehicle body floor (20) and extending in a width direction of the vehicle, a pair of vehicle body side members (300) each arranged on the outside of the vehicle on both sides of the vehicle and extending in a longitudinal direction of the vehicle, each of the pair of vehicle body side members (300) being connected to respective ends of the vehicle body cross members (210-250), a support member (400) having extension ends extending from a center of the support member (400) in a plurality of directions, wherein each of the extension ends connects at least one of the plurality of vehicle body cross members (210-250) to a vehicle body side longitudinal member (300), and wherein the plurality of vehicle body cross members (210-250), the one vehicle body side longitudinal member (300) of the pair of vehicle body side longitudinal members (300), and the support member (400) are connected to each other to define a load path for a side collision of the vehicle, a chassis frame (100) disposed at a lower portion of the vehicle body in an inward direction of the vehicle and detachably coupled to the plurality of vehicle body cross members (210-250) and the pair of vehicle body side members (300), and a battery pack (10) mounted on the chassis frame (100).

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