Body for vehicles

Abstract

The present invention discloses a vehicle body, which includes: a frame member formed into a tubular shape with an open cross-sectional structure with one side surface open; a fastening portion formed into a shape of an opening portion of an end portion of the closed frame member; and a fastening portion configured to be fastened with another frame member by a fastener in a state of surface contact.

Description

Technical Field

[0001] The present disclosure relates to a vehicle body which can be assembled in a simple manner and has rigidity. Background Art

[0002] As a body structure of a conventional compact car, a monocoque body structure in which only a rear door portion is cut out from a conventional vehicle design is applied.

[0003] However, this is a typical monocoque structure with only the rear door portion removed, and has the following disadvantages: the body is produced by processing and welding the parts using a stamping process using a mold, and therefore, not only is a large-scale investment in facilities such as a stamping shop, a body welding shop, and a coating shop required, but the degree of freedom in design is also low.

[0004] In particular, when a variety of vehicle bodies are produced in small quantities, a conventional vehicle body requires many changes in design, and therefore, there is a problem in that not only does the production cost inevitably increase due to a sharp increase in the number of molds, but it is also difficult to ensure rigidity.

[0005] Therefore, there is a need for a new vehicle body structure that can not only cope with various designs but also has improved vehicle body assemblability and rigidity in a smart factory environment.

[0006] The contents as the related art description are provided only to help understanding the background of the present disclosure and should not be considered to correspond to the prior art known to those of ordinary skill in the art. Summary of the invention

[0007] The embodiments of the present disclosure provide a vehicle body that can be assembled in a simple manner and has rigidity.

[0008] According to an embodiment of the present disclosure, a vehicle body includes: a frame member formed into a tubular shape having an open cross-sectional structure with one side surface open; a fastening portion formed into a shape of an opening portion of an end portion of the frame member and fastened with another frame member by a fastener in a state of surface contact.

[0009] The fastening portion may be formed to extend in the length direction at an end portion of the side surface connection portion opposite to the opened side surface opening portion of the frame member, and the fastening portion may be folded toward the opening portion to close the opening portion.

[0010] The additional fastening portion partially closing the side surface opening portion may be formed by folding the fastening portion closing the opening portion toward the side surface opening portion.

[0011] The cross section of the fastening portion may be formed to match the cross section of the opening portion so that the fastening portion and the opening portion engage with each other at a matching portion.

[0012] The flange portion may be formed by folding a side surface shielding portion extending from the side surface connecting portion toward the side surface opening portion at an end portion of the side surface shielding portion.

[0013] Both ends of the mounting plate may be respectively joined to the two flange portions to prevent the distance between the side surface shielding portions on both sides from increasing or decreasing.

[0014] The frame member may have a rigidity providing portion formed to have a closed cross-sectional structure at an edge of an inner wall surface of the frame member in a length direction.

[0015] In some exemplary embodiments, one end of the frame member may be connected to a front pillar member extending from the front sides of the vehicle body to the roof side. The other end of the frame member may be connected to a rear pillar member extending from the rear sides of the vehicle body to the roof side. In addition, the middle portion of the frame member may be bent and arranged to face the portion where the front pillar member and the rear pillar member are connected.

[0016] The fastening portion of the frame member can be fastened to the rear end portions of the front pillar members on both sides, the lower surface of the rear end portion of the front pillar member can be fastened to the upper surface of the upper end portion of the rear pillar member, the upper end portion of the rear pillar member can be bent toward the frame member, and the additional fastening portion of the frame member can be positioned to overlap with the upper surface of the bent portion of the rear pillar member, so that the bent portion and the additional fastening portion are fastened by passing the bolts.

[0017] The side reinforcing members extending from the front sides of the vehicle body through the lower part of the vehicle body to the rear sides of the vehicle body may be connected to the rear pillar members extending from the rear sides of the vehicle body to the roof side, and may be connected to one end of the frame member. The other end of the frame member may be connected to the connecting member connected between the rear pillar members, and the middle part of the frame member may be bent and arranged to face the connecting member and the part of the side reinforcing member connected to the rear pillar member.

[0018] The frame member may be a reinforcing frame member connected between two members in a bridging form. One end of the reinforcing frame member may be connected to a side surface of an end of a side reinforcing member, while the side reinforcing member is connected to a middle portion of the rear pillar member. The other end of the reinforcing frame member may be connected to a connecting member connected between the two rear pillar members at a middle portion of the two rear pillar members. The middle portion of the reinforcing frame member may be curved, and the curved surface may be arranged to face the connecting member and a portion of the side reinforcing member connected to the rear pillar member.

[0019] According to an embodiment of the present disclosure, a method for manufacturing a vehicle body includes: a material preparation step of preparing a plate-like material having side surface covering portions formed on both sides of a side surface connecting portion and a fastening portion formed at an end of the side surface connecting portion and extending so that the side surface connecting portion is longer than the side surface covering portion; a side portion folding step of folding the side surface covering portion in the same direction with the side surface connecting portion as the center to form a tubular-shaped plate-like material having an open cross-sectional structure with one side surface open; and a fastening portion folding step of folding the fastening portion toward the folded side surface covering portion to close the opening portion formed at the end and to couple the fastening portion to the side surface covering portion, thereby forming a frame member.

[0020] In the material preparation step, a fastening hole may be formed in the fastening portion.

[0021] In the side surface portion folding step, after folding both side surface shielding portions, the flange portion may be formed by folding end portions of both side surface shielding portions in directions facing each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 2 is a view showing the shape of a frame member forming a skeleton of a vehicle body according to the present disclosure.

[0023] Figure 2 is a view showing a cross section of a frame member according to the present disclosure.

[0024] Figure 3 2 is a view for explaining a method of manufacturing a frame member through a folding process according to the present disclosure.

[0025] Figure 4 2 is a view showing a frame member in which a fastening portion according to the present disclosure is folded in two stages.

[0026] Figure 5 is a view showing a cross section of a frame member combined with a mounting plate according to the present disclosure.

[0027] Figure 6 is a view showing a cross section of a frame member in a state where a rigidity providing portion is formed according to the present disclosure.

[0028] Figure 7 2 is a view showing a coupling structure of a frame member applied to a vehicle body according to the present disclosure.

[0029] Figure 8 FIG. 1 is a diagram showing the structure of the connection portion between the front support member and the rear support member in one embodiment. Figure 7 View of portion A of FIG.

[0030] Fig. 9 FIG. 1 is a diagram showing the structure of the connection portion between the front support member and the rear support member in another embodiment. Figure 7 View of portion A of FIG.

[0031] Fig.10 A reinforcing frame member is formed by bending and applied to a joint portion between a rear pillar member and a side reinforcing member. Figure 7 View of portion B. DETAILED DESCRIPTION

[0032] Preferred embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0033] The frame member 100 according to the present disclosure may be applied to the vehicle body 10 of an ultra-small electric vehicle. A plurality of frame members 100 are organically connected to each other to constitute a module for each component, and the modules are connected to each other to form the vehicle body 10.

[0034] Figure 1 1 shows the shape of the frame member 100 forming the skeleton of the vehicle body 10 according to the present disclosure, Figure 2 A cross section of a frame member 100 according to the present disclosure is shown.

[0035] Reference Figure 1 and Figure 2 , the frame member 100 according to the present disclosure is formed in a tubular shape having an open cross-sectional structure in which one side surface is opened.

[0036] Furthermore, the fastening portion 150 is formed in a shape that closes the opening portion OP of the end portion of the frame member 100 , and the fastening portion 150 and the other frame member 100 are fastened by the fastener 180 in a state of surface contact.

[0037] For example, the frame member 100 is formed such that a cross section perpendicular to the length direction of the frame member 100 is formed such that Among the outer peripheral surfaces of the frame member 100, three surfaces are closed and one surface is open.

[0038] The frame member 100 may preferably be formed in the shape of a straight pipe that is long in the length direction, but the frame member 100 may be formed in the shape of a bent pipe in which a middle portion is bent according to circumstances.

[0039] In addition, the fastener 180 may be a bolt / nut or a rivet, and a fastening hole 152 may be formed in the fastening portion 150 so that the bolt or rivet may pass through the fastening portion 150 for easy fastening.

[0040] That is, according to the above structure, in a state where the outer surface of the fastening portion 150 is in contact with the surface of another frame member 100 to be connected to the frame member 100, an in-line fastening process is implemented by inserting a bolt into the fastening hole 152 through the open portion of the frame member 100 and then tightening the bolt using a tool, thereby making the combining operation between the components easy and simple, thereby improving the assemblability of the vehicle body 10.

[0041] In addition, the vehicle body 10 is formed by assembling the members including the frame member 100 in a bolted or riveted manner. Therefore, a large-scale stamping shop, a vehicle body welding shop, a coating shop, etc. are not required. Therefore, it is possible to appropriately cope with the smart factory environment, and it is also possible to simplify the work of assembling the vehicle body 10, thereby improving assemblability. In addition, the torsional rigidity of the assembled part can be greatly improved, thereby ensuring the strength and rigidity of the vehicle body 10.

[0042] Figure 3 2 is a view for explaining a method of manufacturing the frame member 100 through a folding process according to the present disclosure.

[0043] Referring to the drawings, a structure in which both ends of the frame member 100 are closed by the fastening portion 150 will be described. The fastening portion 150 is formed to extend in the length direction at the end of the side surface connection portion 110 opposite to the opened side surface opening portion 140 of the frame member 100.

[0044] Therefore, the fastening portion 150 is folded toward the opening portion OP to close the opening portion OP.

[0045] For example, in the length direction, the length between both ends of the side surface connection portion 110 is longer than the length between both ends of the side surface shielding portion 120 , and the portion formed to be longer becomes the fastening portion 150 .

[0046] Therefore, the side surface shielding portions 120 formed on both sides of the side surface connection portion 110 are folded in the vertical direction, and the fastening portion 150 is folded at the end of the side surface connection portion 110 adjacent to the side surface shielding portion 120, thereby shielding the opening portions OP at both ends of the frame member 100.

[0047] That is, the rigidity of the fastening part 150 can be ensured by forming the fastening part 150 integrally with the frame member 100, and the frame member 100 can also be manufactured by folding and bending the fastening part 150, so that the frame member 100 can be manufactured in a simple manner at low cost, which can effectively cope with the smart factory environment.

[0048] For reference, when the frame member 100 manufactured as described above is made of steel material, a rust preventive may be applied on the surface of the frame member 100 to suppress rust. However, when the frame member 100 is made of aluminum material, the work of applying the rust preventive may be omitted.

[0049] Figure 4 1 is a view showing the frame member 100 in which the fastening part 150 according to the present disclosure is folded in two stages.

[0050] Referring to the drawing, the additional fastening portion 160 partially closing the side surface opening portion 140 may be formed by folding the fastening portion 150 closing the opening portion OP toward the side surface opening portion 140 .

[0051] For example, the side surface shielding portions 120 formed on both sides of the side surface connection portion 110 are folded in the vertical direction, and in the length direction, the length between both ends of the side surface connection portion 110 is longer than the length between both ends of the side surface shielding portion 120. The long portions become the fastening portion 150 and the additional fastening portion 160.

[0052] Therefore, the side surface shielding portions 120 formed on both sides of the side surface connection portion 110 are folded in the vertical direction, and the fastening portion 150 is folded at the end of the side surface connection portion 110 adjacent to the side surface shielding portion 120, thereby shielding the opening portions OP at both ends of the frame member 100.

[0053] In addition, the fastening portion 150 shielding the opening portion OP of the frame member 100 is folded toward the side surface opening portion 140 at the end of the fastening portion 150 to partially shield the side surface opening portion 140. The portion shielding the side surface opening portion 140 becomes the additional fastening portion 160. In this case, similar to the fastening portion 150, a fastening hole 162 may be formed in the additional fastening portion 160.

[0054] In addition, by folding the additional fastening portion 160 again toward the side surface connecting portion 110 at the end of the additional fastening portion 160 to enter The decorative portion 170 is formed by forming an inner space, and the edge of the decorative portion 170 is formed by a 2 The welds W of the weld are respectively joined to the inner surface of the side surface shielding portion 120 and the inner surface of the side surface connecting portion 110 , thereby ensuring the rigidity of the fastening portion 150 and the additional fastening portion 160 .

[0055] That is, according to the structure of the vehicle body 10, not only the fastening portion 150 but also the additional fastening portion 160 can be combined with another frame member 100 in a surface contact state. This structure is simply applicable to the main portion of the vehicle body 10 that requires rigidity, thereby being able to cope with various designs of the vehicle body 10.

[0056] In addition, according to the present disclosure, Figure 1 As shown, the cross section of the fastening portion 150 is formed to match the cross section of the opening portion OP so that the fastening portion 150 and the opening portion are engaged with each other at the matching portion.

[0057] For example, the fastening portion 150 is formed in a quadrangular shape, and the fastening portion 150 is folded while the outer edge of the fastening portion 150 corresponds to the inner edge of the opening portion OP. 2 The weld W of the welding is used to join the portion where the outer edge of the fastening portion 150 and the inner edge of the opening portion OP meet, thereby ensuring the rigidity of the fastening portion 150 .

[0058] However, the fastening portion 150 may be formed in a plate shape having a larger cross-sectional area than the opening portion OP. In this case, the fastening portion 150 and the opening portion OP may be joined by welding W along a line where the fastening portion 150 and the opening portion OP contact each other.

[0059] Reference Figure 2 The flange portion 130 may be formed by folding the side surface shielding portion 120 extending from the side surface connecting portion 110 toward the side surface opening portion 140 at an end portion of the side surface shielding portion 120 .

[0060] For example, the flange portion 130 may be formed by folding the ends of both side surface shielding portions 120 in directions facing each other.

[0061] That is, the flange portion 130 is formed in a shape bent from the side surface shielding portion 120 toward the side surface opening portion 140 to not only ensure rigidity of the end of the side surface shielding portion 120 but also to provide a mounting surface for mounting a mounting plate 200 to be described below.

[0062] Figure 5 2 is a view showing a cross section of a frame member 100 in combination with a mounting plate 200 according to the present disclosure.

[0063] Referring to the drawing, both ends of the mounting plate 200 are respectively joined to the two flange portions 130 to prevent the distance between the side surface shielding portions 120 on both sides from increasing or decreasing.

[0064] That is, when it is necessary to mount accessories or other components on the open side surface portion of the frame member 100, the mounting plate 200 as a separate component is assembled on the two flange portions 130, and the components are coupled to the mounting plate 200, thereby not only providing a mounting surface for mounting the components but also ensuring additional rigidity by preventing the distance between the side surface shielding portions 120 on both sides from increasing or decreasing.

[0065] Figure 61 is a view showing a cross section of the frame member 100 in a state where the rigidity providing portion 190 is formed according to the present disclosure.

[0066] Referring to the drawing, the frame member 100 according to the present disclosure may have a rigidity providing portion 190 formed to have a closed cross-sectional structure at an edge of an inner wall surface of the frame member 100 in a length direction.

[0067] For example, the rigidity providing portion 190 having a rectangular closed cross-sectional structure is formed at an edge portion where the side surface connecting portion 110 and the side surface shielding portion 120 meet each other in the inner surface of the frame member 100 along the length direction of the frame member 100 .

[0068] This is applicable when the frame member 100 is made of an aluminum material and manufactured through an extrusion process, and additional rigidity is ensured by adopting a closed cross-section structure within the frame member 100 .

[0069] at the same time, Figure 7 1 is a view showing a coupling structure of a frame member 100 applied to a vehicle body 10 according to the present disclosure. The vehicle body 10 is assembled in a simple manner by inline bolt connection between members without any separate joint structure. For reference, in the figure, the connecting member 50 is coupled to the front pillar member 20, but all of these members have the same structure as the frame member 100 according to the present disclosure, but are different only in expression. Therefore, the coupling structure of the frame member 100 according to the present disclosure will be described to explain the coupling structure of these members.

[0070] Referring to the figure, fastening portion 150 is formed into a shape covering the end of connection member 50 , and a bolt is inserted into a fastening hole 152 formed in fastening portion 150 with the outer surface of fastening portion 150 in contact with one surface of front pillar member 20 .

[0071] In this case, one side surface of the connection member 50 is open, and the bolt can be tightened using a tool through the open side surface portion, thereby simplifying the assembly process of the connection member 50 and the front pillar member 20 .

[0072] at the same time, Figure 8 The invention is a diagram showing a frame member 100 formed by bending according to the present invention and applied to a joint portion of a front pillar member 20 and a rear pillar member 30. Figure 7 View of portion A of FIG.

[0073] That is, as described above, the structure of the vehicle body according to the present disclosure is constructed by connecting frame members 100 to each other. However, the frame members 100 constituting the structure of the vehicle body may be used as frame members 100' as reinforcement materials for connecting in a bridging form, thereby ensuring additional rigidity of the connecting portion.

[0074] For reference, a reinforced frame member 100 ′ based on the application of the frame member according to the present disclosure in a bridge form is bent in the middle portion and both ends are connected to respective members to be connected.

[0075] Referring to the figure, one end of the reinforcing frame member 100' is connected to the front pillar member 20 extending from the front sides of the vehicle body 10 to the roof side, and the other end of the reinforcing frame member 100' is connected to the rear pillar member 30 extending from the rear sides of the vehicle body 10 to the roof side.

[0076] For example, a bolt hole is formed at one end of the side surface connection portion 110 to fasten the one end of the side surface connection portion 110 to one surface of the front pillar member 20 by bolt connection, and a bolt hole is formed at the other end of the side surface connection portion 110 to fasten the other end of the side surface connection portion 110 to the rear pillar member 30 by bolt connection.

[0077] Furthermore, the middle portion of the reinforcing frame member 100 ′ is bent and disposed to face a portion where the front pillar member 20 and the rear pillar member 30 are connected.

[0078] That is, both ends of the reinforcing frame member 100' are connected to the front pillar member 20 and the rear pillar member 30, respectively, and the reinforcing frame member 100' serves as a joint by positioning the outer curved surface of the curved portion of the reinforcing frame member 100' at the connecting portion of the front pillar member 20 and the rear pillar member 30, which is very important for the rigidity of the vehicle body 10, thereby ensuring the rigidity of the connecting portion.

[0079] at the same time, Fig. 9 is a diagram showing a structure in another embodiment Figure 7 View of portion A of FIG.

[0080] Referring to the figure, the fastening parts 150 formed at both ends of the rear roof member 60 are fastened by bolts in a state of surface contact with the rear ends of the front pillar members 20 on both sides. In addition, the upper surface of the upper end of the rear pillar member 30 is fastened by bolts in a state of surface contact with the lower surface of the rear end of the front pillar member 20.

[0081] here, Figure 4 The structure of the frame member 100 shown is applied to the rear roof member 60 , and additional fastening portions 160 are formed at both end portions of the rear roof member 60 below the rear roof member 60 .

[0082] Therefore, the upper end portions of the two rear pillar members 30 are bent toward the rear roof member 60 , and the upper surfaces of the bent portions 32 are positioned to overlap below the additional fastening portions 160 formed on the rear roof member 60 .

[0083] Therefore, the bent portion 32 of the rear pillar member 30 and the additional fastening portion 160 of the rear roof member 60 can be fastened to each other by passing the bolt therethrough.

[0084] In addition, the frame member according to the present disclosure may be used as the reinforcing frame member 100 ′ connected between the front pillar member 20 and the rear pillar member 30 in a bridge form to serve as a joint.

[0085] That is, one end of the reinforcing frame member 100 ′ is connected to the front pillar member 20 extending from both front sides of the vehicle body 10 to the roof side, and the other end of the reinforcing frame member 100 ′ is connected to the rear pillar member 30 extending from both rear sides of the vehicle body 10 to the roof side.

[0086] For example, a bolt hole is formed at one end of the side surface connection portion 110 formed on the reinforcing frame member 100' so that the one end of the side surface connection portion 110 is fastened to one surface of the front pillar member 20 by bolt connection, and a bolt hole is formed at the other end of the side surface connection portion 110 so that the other end of the side surface connection portion 110 is fastened to the rear pillar member 30 by bolt connection.

[0087] Furthermore, the middle portion of the reinforcing frame member 100 ′ is bent and disposed to face a portion where the front pillar member 20 and the rear pillar member 30 are connected.

[0088] That is, the reinforcing frame member 100' is connected to serve as a joint at the connection portion of the front pillar member 20 and the rear pillar member 30 which are very important for the rigidity of the vehicle body 10. In addition, by overlapping the front pillar member 20 and the rear pillar member 30 on the rear roof member 60 having the additional fastening portion 160 and fastening the front pillar member 20 and the rear pillar member 30 and the rear roof member 60 to each other by bolting, the rigidity of the connection portion can be more effectively ensured.

[0089] Fig.10 FIG. 1 is a diagram showing a reinforcing frame member 100 ′ formed by bending according to the present disclosure and applying the reinforcing frame member 100 ′ formed by bending to a joint portion between a rear pillar member 30 and a side reinforcing member 40. Figure 7 View of portion B.

[0090] 1 , the side reinforcement members 40 extending from the front sides of the vehicle body 10 through the lower part of the vehicle body 10 to the rear sides of the vehicle body 10 are connected to the rear pillar members 30 extending from the rear sides of the vehicle body 10 to the roof side, and are connected to one end of the reinforcement frame member 100'.

[0091] The other end portion of the reinforcement frame member 100 ′ is connected to a connection member 50 connected between the two rear pillar members 30 .

[0092] For example, a bolt hole is formed at one end of the side surface connection portion 110 formed on the reinforcing frame member 100' to fasten the one end of the side surface connection portion 110 to a surface of the side reinforcing member 40 by bolt connection, and a bolt hole is formed at the other end of the side surface connection portion 110 to fasten the other end of the side surface connection portion 110 to the connecting member 50 by bolt connection.

[0093] In particular, the middle portion of the reinforcing frame member 100 ′ is bent and disposed to face the connection member 50 and the portion where the side reinforcing member 40 is connected to the rear pillar member 30 .

[0094] That is, both ends of the reinforcing frame member 100' are connected to the connecting member 50 and the side reinforcing member 40, respectively, and the reinforcing frame member 100' functions as a joint by positioning the outer curved surface of the curved portion of the reinforcing frame member 100' at the connecting portion of the connecting member 50 and the side reinforcing member 40 and the rear pillar member 30, which is very important for the rigidity of the vehicle body 10, thereby ensuring the rigidity of the connecting portion.

[0095] For reference, the connection member 50 may be applied to a connection member or other connection members, may be applied to a portion for assembling a chassis / interior component / exterior component, or may be locally applied to a portion requiring reinforcement of rigidity.

[0096] Meanwhile, the method of manufacturing the frame member 100 through the bending process according to the present disclosure includes a material preparing step ( S10 ), a side surface portion folding step ( S20 ), and a fastening portion folding step ( S30 ).

[0097] Reference Figure 3 In the material preparation step (S10), a plate-shaped material is prepared, which has a side surface shielding portion 120 formed on both sides of the side surface connection portion 110 and a fastening portion 150 formed at the end of the side surface connection portion 110 and extending so that the side surface connection portion 110 is longer than the side surface shielding portion 120.

[0098] In this case, the material may have a fastening hole 152 formed at the fastening part 150 .

[0099] In the side surface portion folding step ( S20 ), the side surface shielding portion 120 is folded in the same direction with the side surface connecting portion 110 as the center to form a plate-like material having a tubular shape with an open cross-sectional structure in which one side surface is open.

[0100] In the side surface portion folding step ( S20 ), after folding the both side surface shielding portions 120 , the flange portion 130 may be formed by folding the ends of the both side surface shielding portions 120 in directions facing each other.

[0101] Subsequently, in the fastening portion folding step ( S30 ), the fastening portion 150 may be folded toward the folded side surface shielding portion 120 to close the opening portion OP formed at the end and coupled to the side surface shielding portion 120 , thereby forming the frame member 100 .

[0102] That is, a plate-shaped material for manufacturing the frame member 100 is secured by performing a blanking process.

[0103] Based on the secured material, both side surface shielding parts 120 are folded with the side surface connection part 110 as the center, and then the flange part 130 extending from the side surface shielding part 120 is formed by folding the side surface shielding parts 120 in directions facing each other.

[0104] Then, the fastening portion 150 formed by extending from the end of the side surface connecting portion 110 is directed toward the portion having a shape formed by folding the side surface shielding portion 120. The opening portion OP of the end portion of the shaped cross-section is folded, and then the outer edge of the fastening portion 150 and the inner edge of the opening portion OP are joined by welding W, thereby manufacturing the frame member 100.

[0105] Therefore, the frame member 100 manufactured as described above can make the joining process between the members easy and simple by implementing the inline fastening operation, thereby improving the assemblability of the vehicle body 10. In the inline fastening operation, when the outer surface of the fastening portion 150 is in contact with the surface of another frame member 100 connected to the frame member 100, a bolt is inserted into the fastening hole 152 through the open part of the frame member 100 and then tightened using a tool.

[0106] Furthermore, since the frame member 100 is manufactured through a process of folding and bending the fastening part 150 , the frame member 100 may be manufactured in a simple manner at low cost, thereby effectively coping with a smart factory environment.

[0107] In addition, since the vehicle body 10 is formed by assembling the members including the frame member 100 by bolting or riveting, a large-scale stamping shop, a vehicle body welding shop, a coating shop, etc. are not required. Therefore, it is possible to appropriately cope with the smart factory environment, and the work of assembling the vehicle body 10 can be simplified, thereby improving assemblability. In addition, the torsional rigidity of the assembled part can be greatly improved, thereby ensuring the strength and rigidity of the vehicle body 10.

[0108] While the present disclosure has been shown and described with respect to the particular embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the disclosure as defined by the appended claims.

Claims

1. A vehicle body, comprising: a frame member formed into a tubular shape having an open cross-sectional structure with one side surface opened; as well as a fastening portion formed in a shape closing an opening portion of an end portion of the frame member, the fastening portion being fastened to another frame member by a fastener in a state of surface contact, wherein two flange portions are formed by folding a side surface shielding portion extending from a side surface connecting portion opposite to an opened side surface opening portion of the frame member toward the side surface opening portion at an end portion of the side surface shielding portion.

2. The vehicle body according to claim 1, wherein: The fastening portion is formed to extend in the length direction at an end portion of the side surface connecting portion, and The fastening portion is folded toward the opening portion to close the opening portion.

3. The vehicle body according to claim 2, wherein: An additional fastening portion that partially closes the side surface opening portion is formed by folding the fastening portion that closes the opening portion toward the side surface opening portion.

4. The vehicle body according to claim 2, wherein: The cross section of the fastening portion is formed to match the cross section of the opening portion so that the fastening portion and the opening portion engage with each other at a matching portion.

5. The vehicle body according to claim 1, wherein: Both ends of the mounting plate are respectively joined to the two flange portions to prevent the distance between the side surface shielding portions on both sides from increasing or decreasing.

6. The vehicle body according to claim 1, wherein: The frame member has a rigidity providing portion formed to have a closed cross-sectional structure at an edge of an inner wall surface of the frame member in a length direction.

7. The vehicle body according to claim 1, wherein: The vehicle body includes a plurality of frame members and a plurality of fasteners.

8. The vehicle body according to claim 7, wherein: The first end of the frame member is connected to a front pillar member extending from the front of both sides of the vehicle body to the roof side. The other end of the frame member is connected to a rear pillar member extending from the rear of both sides of the vehicle body to the roof side, and The middle portion of the frame member is bent and faces a portion where the front pillar member and the rear pillar member are connected.

9. The vehicle body according to claim 7, wherein: Side reinforcement members extending from the front sides of the vehicle body through the lower part of the vehicle body to the rear sides of the vehicle body are connected to rear pillar members extending from the rear sides of the vehicle body to the roof side and connected to one end of the frame member. The other end of the frame member is connected to a connecting member connected between the rear pillar members, and The middle portion of the frame member is bent and faces the connection member and a portion where the side reinforcement member is connected to the rear pillar member.

10. A method for manufacturing a vehicle body, comprising: preparing a plate-like material having side surface shielding portions formed on both sides of a side surface connecting portion and a fastening portion formed at an end of the side surface connecting portion and extending so that the side surface connecting portion is longer than the side surface shielding portions; folding the side surface shielding portion in the same direction with the side surface connecting portion as the center to form a plate-like material having a tubular shape with an open cross-sectional structure in which one side surface is open; as well as The fastening portion is folded toward the folded side surface shielding portion to close the opening portion formed at the end portion and is coupled to the side surface shielding portion, thereby forming a frame member.

11. The method according to claim 10, further comprising: A fastening hole is formed in the fastening portion.

12. The method according to claim 10, further comprising: After folding the side surface shielding portions on both sides, flange portions are formed by folding end portions of the side surface shielding portions on both sides in directions facing each other.

13. A vehicle body, comprising: a plurality of frame members, each of the frame members being formed into a tubular shape having an open cross-sectional structure with one side surface being open; a plurality of fastening portions, each of the fastening portions being formed in a shape closing an opening portion of an end portion of a respective frame member; as well as a plurality of fasteners, fastening the frame members through the fastening portions so that each frame member is in surface contact with another frame member, wherein two flange portions are formed by folding a side surface shielding portion extending from a side surface connecting portion opposite to an opened side surface opening portion of each of the frame members toward the side surface opening portion at an end portion of the side surface shielding portion.

14. The vehicle body according to claim 13, wherein: The first end portions of the frame member are connected to front pillar members extending from both front sides of the vehicle body to the roof side.

15. The vehicle body according to claim 14, wherein: The other end portions of the frame member are connected to rear pillar members extending from rear sides of the vehicle body to the roof side.

16. The vehicle body according to claim 15, wherein: The middle portion of the frame member is bent and faces a portion where the front pillar member and the rear pillar member are connected.

17. The vehicle body according to claim 13, wherein: Side reinforcement members extending from both front sides of the vehicle body through the lower part of the vehicle body to both rear sides of the vehicle body are connected to rear pillar members extending from both rear sides of the vehicle body to the roof side and connected to one end of the frame member.

18. The vehicle body according to claim 17, wherein: The other end portion of the frame member is connected to a connection member connected between the rear pillar members, and a middle portion of the frame member is bent and faces the connection member and a portion of the side reinforcing member connected to the rear pillar member.

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