JP6111342B2 - Body structure - Google Patents

Description

  The present invention relates to an improved vehicle body structure.

  As the structure of the vehicle body, three or more members may be used, and these members may be overlapped to join the overlapping portions. As a vehicle body having such a structure, for example, a technique described in Patent Document 1 below is known.

  The vehicle body rear structure known from Patent Document 1 includes a central closed section that extends in the vehicle width direction by an upper back and an upper back outer, and is continuously connected to the outside of the central closed section so that a strainer front and a strainer rear are provided. And constitutes an outer closed cross section.

  An example of the assembly of the vehicle body rear part structure will be described. First, a center assembly is prepared by previously assembling parts on the vehicle body center side including the upper back and the upper back outer. On the other hand, the side assembly including the strainer front and the strainer rear is assembled in advance to create a side assembly. Then, the side assembly is moved from the side of the vehicle body to the center side with respect to the center assembly by the transport machine. Next, a side assembly is assembled | attached with respect to a center assembly, and these are weld-joined.

  Deviations in the support point at which the transport machine supports the side assembly, dimensional errors when molding a single component, or errors during assembly are unavoidable. As a result, there is a possibility that the position of the terminal of the closed cross section deviates from the assumed position. In this case, there is a possibility that the terminals of the respective members interfere with each other. As a result of the interference between the terminals, the assembling work is delayed, thereby reducing productivity.

JP2013-35500A

  An object of the present invention is to provide a vehicle body structure technique that can be easily assembled.

  According to one aspect of the present invention, the first member, the second member, and the third member constituting the vehicle body have three members, and the end portion of the first surface portion, which is an arbitrary surface of the first member, The end of the second surface portion, which is an arbitrary surface in the second member, is overlapped so that the surfaces overlap each other, and the back surface of the portion of the first surface portion where the second surface portion is overlapped, The 3rd surface part which is the arbitrary surfaces in the 3rd member is piled up, and the 3rd surface part is arranged so that it may straddle along the extension direction of the 1st surface part and the 2nd surface part, and the edge part of the 1st surface part The first guide portion that is inclined so as to be separated from the second member is formed at a portion other than the portion where the third surface portion is overlapped, and is located in the end portion of the second surface portion. The portion where the third surface portion is overlapped is separated from the first member. The second guide portion is inclined is formed so, that the vehicle body structure has been adopted, wherein provided that.

  Preferably, the first member to the third member have a three-sheet joint portion in which three plate members are superimposed and joined.

  Preferably, the first member and the second member are formed so that a cross section perpendicular to the extending direction includes a substantially U-shaped cross section, and the second member is formed on an outer peripheral surface of the U-shaped cross section of the first member. By overlapping the U-shaped cross sections of the members, the end portions of the first member and the second member overlap, and the third member has a U-shaped cross section of each of the first member and the second member. Joined to the inner surface to form a closed cross section, and the first guide portion is formed on the entire circumference of the U-shaped cross section of the first member except for the portion where the third member is overlapped. In addition, the second guide portion is formed so as to be inclined toward the side away from the cross-sectional center.

  According to another aspect of the present invention, the second member is formed by bending the plate material in a substantially U shape outside the end portion in the extending direction of the first member formed by bending the plate material in a substantially U shape. Ends in the extending direction are overlapped and joined in a state in which the openings are directed in the same direction, so that at least the portion where the first member and the second member are overlapped is covered. The plate-shaped third member is a vehicle body structure joined to the inner surfaces of the first member and the second member, and the substantially U-shaped first member includes a first bottom portion and the first bottom portion. Each of the first vertical wall portions raised from both ends of each of the first and second substantially wall-shaped second members, the second bottom portion and the second vertical wall raised from both ends of the second bottom portion. A wall portion, and at the end of the first member, one of the first vertical wall portions, the first And a first guide portion bent to be inclined in a direction away from the second member continuously to the proximal end of the first vertical wall portion and the other portion, and at the end of the second member, A second guide portion that is bent so as to be inclined in a direction away from the other first vertical wall portion is formed at the tip of the second vertical wall portion corresponding to the other first vertical wall portion, When the second member is viewed from the extending direction, the vehicle body structure is employed, wherein the first guide portion and the second guide portion are continuously formed in a substantially U shape. A vehicle is provided.

  According to one aspect of the present invention, the first guide portion is formed in a portion of the end portion of the first surface portion excluding the portion where the third surface portion is overlapped. Thereby, the superposition with the first member can be smoothly performed without hindering the joining of the third member. On the other hand, the second guide portion is formed in a portion of the end portion of the second surface portion where the third surface portion is overlapped. For this reason, generation | occurrence | production of the dead space which can generate | occur | produce in the periphery of a 2nd guide part can be suppressed. That is, according to the present invention, the vehicle body can be assembled smoothly while effectively utilizing the space.

  In addition, in order to reinforce the overlapped portion of the first and second members, even when the third member is provided across the first and second members, the first and second guide portions are provided around the entire circumference of the terminal. The guide shape can be set without any interruption, and interference between the terminals can be avoided. Therefore, assembling property can be improved and productivity can be increased.

  Furthermore, a third member straddling the first and second members can be provided, and a portion where the first and second members are overlapped can be reinforced by the third member. Therefore, rigidity and strength can be increased even in a portion where the first member and the second member where the stress is relatively easily concentrated, and local deformation due to the stress concentration can be suppressed.

  Furthermore, in the present invention, by providing the joint portion at the overlapped portion of the first to third surface portions, a portion where the three members are joined can be provided between the first member and the second member, and the rigidity is increased.・ Strength increases. In other words, the stress is dispersed not only in the first member and the second member but also in the third member through the joint at the portion where the first member and the second member where the stress is likely to concentrate is relatively large. Transmission efficiency is improved and rigidity and strength are improved.

  Furthermore, in this invention, the 1st member and the 2nd member are formed in the substantially U shape, and the U-shaped cross section of the 2nd member is overlaid on the outer peripheral surface of the U-shaped cross section of the 1st member. Thereby, the site | part with which the 2nd member was piled up on the 1st member becomes a structure where the U-shaped cross section was piled up twice. Therefore, the rigidity and strength can be increased even at the joint portion between the first member and the second member where stress is likely to concentrate, and local deformation due to stress concentration can be suppressed. Further, by forming a closed cross-sectional structure with the third member and the U-shaped cross section, the third member is deformed such that the opening of the U-shaped cross section expands outward in the cross section or contracts in the internal direction of the cross section. Therefore, the rigidity of the single member can be increased.

  Furthermore, by forming the guide portion on the entire circumference of the U-shaped cross section of the first member, the terminals of the first member and the second member interfere over the entire circumference of the U-shaped cross section during assembly. Can be prevented.

  In addition, when the guide part is formed on the entire circumference, the guide part is inclined toward the center of the cross section, so that the guide part does not protrude outward from the cross section and is arranged in the vicinity of the first and second members. Can avoid interference with other parts.

  According to another aspect of the present invention, the first guide portion is continuously formed from the first bottom portion to the proximal end of the first vertical wall portion. Thereby, the superposition with the first member can be smoothly performed without hindering the joining of the third member. On the other hand, the second guide portion is formed only at the tip of the second vertical wall portion of the second member. For this reason, generation | occurrence | production of the dead space which can generate | occur | produce in the periphery of a 2nd guide part can be suppressed. That is, according to the present invention, the vehicle body can be assembled smoothly while effectively utilizing the space.

1 is a perspective view of a vehicle body that employs a vehicle body structure according to an embodiment of the present invention. FIG. 2 is a view taken in the direction of arrow 2 in FIG. FIG. 3 is a three-part enlarged view of FIG. 2. FIG. 4 is a perspective view showing a state where a third member is removed from the beam member shown in FIG. 3. FIG. 5 is a view taken in the direction of arrow 5 in FIG. 4. FIG. 6 is a view taken in the direction of arrow 6 in FIG. 4. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 4. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 4. FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. 4. FIG. 10 is a cross-sectional view taken along line 10-10 in FIG. 3. FIG. 11 is a sectional view taken along line 11-11 in FIG. 3. FIG. 12 is a sectional view taken along line 12-12 of FIG. It is a figure explaining the vehicle body structure by a comparative example.

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the description, left and right refer to the left and right based on the vehicle occupant, and front and rear refer to the front and rear based on the traveling direction of the vehicle. In the figure, Fr is the front, Rr is the rear, L is the left when viewed from the occupant, R is the right when viewed from the occupant, Ce is the center of the vehicle width, Up is the top, and Dw is the bottom.
<Example>

  Please refer to FIG. The vehicle body structure according to the present invention is employed in the rear vehicle body 10 (vehicle body 10) of a passenger car. The rear vehicle body 10 includes left and right wheel houses 11 and 11 that cover the upper part of the rear wheels, side wall panels 12 and 12 that are formed upward at the upper portions of the wheel houses 11 and 11 to form side walls, and the side walls. And a beam member 15 formed between the panels 12 and 12.

  Please refer to FIG. 2 and FIG. The beam member 15 includes a parcel cross member 20 (first member 20) provided in the vehicle width direction, and an extension 30 (second member 30) extending from the vehicle width end of the parcel cross member 20 to the side wall. The parcel shelf 40 (the third member 40) covers the parcel cross member 20 and the extension 30. The beam member 15 is formed in a closed cross-sectional shape by covering the parcel shelf 40 with the parcel cross member 20 and the extension 30.

  Hereinafter, the parcel cross member 20 is referred to as a first member 20. The extension 30 is referred to as a second member 30. The parcel shelf 40 is referred to as a third member 40. As for the 1st-3rd members 20-40, plate-shaped steel materials are used for the raw material together. The first to third members 20 to 40 are overlapped and joined to form the beam member 15.

  Please refer to FIG. The end portion 30b of the inner peripheral surface portion 30a (second surface portion 30a) of the second member 30 is overlapped and joined to the end portion 20b of the outer peripheral surface portion 20a (first surface portion 20a) of the first member 20.

  FIG. 5 shows the first member 20 in a state as viewed from obliquely below the end portion 20b. Reference is also made to FIG. The first member 20 is formed by bending a plate-shaped steel material into a substantially U shape. The substantially U-shaped first member 20 includes a first bottom portion 21 and front and rear first vertical wall portions 22 and 23 raised from both ends of the first bottom portion 21. A first flange 24 extends rearward from the upper end of the first vertical wall portion 23 on the rear side.

  FIG. 6 shows the second member 30 as viewed from obliquely above the end 30b. Please refer to FIG. 4 and FIG. The second member 30 is formed by bending a plate-shaped steel material into a substantially U shape. The substantially U-shaped second member 30 includes a second bottom portion 31 and front and rear second vertical wall portions 32 and 33 respectively raised from both ends of the second bottom portion 31. A second flange 34 extends rearward from the upper end of the second vertical wall portion 33 on the rear side.

  7 to 9 are also referred to. At the end 20b of the first member 20, a first guide portion 26 is formed in a substantially J shape to the middle of the first vertical wall portion 23 on the rear side, the first bottom portion 21 and the first wall portion 22 on the front side. Yes. The first guide portion 26 is formed by being bent inward so as to be separated from the second member 30. Further, the first guide portion 26 is formed so as to be inclined toward the center line O side (cross-sectional center side) toward the end portion 20 b of the first member 20.

  A second guide portion 36 that is bent outward is formed in a straight line at the upper portion of the second vertical wall portion 32 on the front side so as to be separated from the first member 20. The second guide portion 36 is formed so as to be inclined toward the side away from the center line O.

  When it summarizes about the 1st guide part 26 and the 2nd guide part 36, it can be said as follows. First and second guide portions 26 and 36 are formed at the end portion 20 b of the outer peripheral surface portion 20 a of the first member 20 and the end portion 30 b of the inner peripheral surface portion 30 a of the second member 30. Although the first and second guide portions 26 and 36 are located at different parts in the vehicle width direction (axial direction), the first member 20 and the second member 30 are located on the side of the vehicle body (on the end side in the extending direction). ), A substantially U-shape is drawn continuously. That is, the first and second guide portions 26 and 36 are substantially U-shaped over the entire circumference with reference to a portion where the end portion 20b of the first member 20 and the end portion 30b of the second member 30 are overlapped. Is formed.

  Please refer to FIG. 10 to FIG. The third member 40 includes a base portion 41 that is disposed substantially horizontally and a bent portion 42 that is bent upward from the front end of the base portion 41. The lower surface portion 40 a (third surface portion 40 a) of the third member 40 is superimposed on and joined to the inner peripheral surface 20 c (back surface 20 c) of the first member 20 and the inner peripheral surface portion 30 a of the second member 30. The bent portion 42 is disposed so as to straddle along the extending direction of the outer peripheral surface portion 20a of the first member 20 and the inner peripheral surface portion 30a of the second member 30 (see also FIG. 3).

  On the rear side, the third member 40 is joined while the base portion 41 is superimposed on the upper surfaces of the flange portions 24 and 34.

  The first guide portion 26 is formed in a portion of the end portion 20b of the inner peripheral surface 20c of the first member 20 excluding the portion P1 where the bent portion 42 is overlapped. The first guide portion 26 is not formed at a portion where the bent portion 42 is overlapped. That is, the 1st guide part 26 exhibits a substantially J shape by forming in the site | parts other than the site | part where the bending part 42 is piled up in the substantially U-shaped 1st member 20. FIG. In other words, the first guide portion 26 is formed on the entire circumference of the U-shaped cross section of the first member 20 except for a portion where the bent portion 42 is overlapped.

  On the other hand, in the end portion 30b of the inner peripheral surface portion 30a of the second member 30, the second guide portion 36 that is inclined so as to be separated from the first member 20 is a straight line at the portion P2 where the bent portion 42 is overlapped. It is formed in a shape.

  In particular, as shown in FIG. 11, the first member to the third member 20 to 40 have a three-plate joining portion P3 in which three plate materials are superimposed and joined. A portion where the three members are joined can be provided between the first member and the second member 30 by providing the three-joint portion P3 at the overlapped portion of the first member to the third member 20 to 40. Increases rigidity and strength. That is, in the part where the first member 20 and the second member 30 where the stress is relatively easily concentrated, the stress is applied not only to the first member 20 and the second member 30 but also the third member via the three-piece joint P3. 40 is also dispersed, so that load transmission efficiency is improved, and rigidity and strength are improved.

  In addition, as FIG. 9 shows, the 1st and 2nd flange parts 24 and 34 are piled up in each edge part. A third member 40 (see FIG. 2) is superimposed on and joined to the upper surfaces of the first and second flange portions 24 and 34. In the part P4 where the first and second flange portions 24 and 34 are overlapped, the third member is also joined together. This part is referred to as a second three-sheet joint P4. The second three-sheet joint portion P4 joins the first member to the third members 20 to 40 extending in a different direction from the three-sheet joint portion shown in FIG. 11 at one place. Thereby, load transmission efficiency improves further and rigidity and intensity improve.

  The present invention will be summarized with reference to FIG. As for the 1st member 120 and the 2nd member 130 which are shown by the comparative example 1 of Fig.13 (a), both edge part 120b, 130b is not bend | folded. In this case, when the second member 130 is superimposed on the first member 120, the end portions 120b and 130b may interfere with each other. As the ends 120b and 130b come into contact with each other, the assembly work of the vehicle body takes a long time.

  The comparative example 2 of FIG. 13B shows the first member 220 and the second member 230 in which only the end portion 230b of the second member 230 is bent outward. In this case, the end portion 230b of the second member 230 serves as a guide, and the second member 230 can be smoothly superimposed on the first member 220. That is, interference between the respective end portions 220b and 230b can be prevented.

  However, since the end 230b of the second member 230 is bent outward, other members cannot be disposed in the vicinity of the end 230b of the second member 230. That is, there is a problem that a dead space is generated at the periphery of the end 230b of the second member 230.

  In Comparative Example 3 in FIG. 13C, the first member 320 and the second member 330 are shown in which only the end portion 320b of the first member 320 is bent inward. In this case, the end 320b of the first member 320 serves as a guide, and the second member 330 can be smoothly overlapped with the first member 320. In addition, since the end 320b of the first member 320 is bent inward, no dead space is generated at the periphery of the end 330b of the second member 330. That is, the space can be used effectively. Normally, other members are not housed inside the first member 320. For this reason, even if it is a case where the edge part 320b of the 1st member 320 is bent inward, a dead space does not generate | occur | produce.

  However, in this case, if the third member (the third member 40 in FIG. 2) is to be joined to the inner surface 320c (corresponding to the back surface) of the first member 320, the first member 320 bent inward. Will end up interfering.

  At this time, it is conceivable to join the third member to the outer surface 320a of the first member 320 (corresponding to the first surface portion). However, as shown in FIG. 10, the rear vehicle body 10 according to the present invention joins the second member 30 to the first member 20 after joining the third member 40 to the first member 20. Returning to FIG. 13C, when the third member is joined in advance to the outer surface 320 a of the first member 320, the end of the third member interferes with the end 330 b of the second member 330. For this reason, the third member cannot be joined to the outer surface 320a (second surface portion) of the first member 320.

  In contrast, in the present invention, the configuration described in FIGS. 10 to 12 is adopted. That is, the end in the extending direction of the second member 30 formed by bending the plate material in a substantially U shape outside the end portion 20b in the extending direction of the first member 20 formed by bending the plate material in a substantially U shape. The portion 30b is overlapped and joined in the same direction (by a state in which the openings are oriented in the same direction), and at least covers the portion where the first member 20 and the second member 30 are overlapped. As described above, the plate-like third member 40 is joined to the inner surfaces 20 c and 30 a of the first member 20 and the second member 30.

  The substantially U-shaped first member 20 includes a first bottom portion 21 and first vertical wall portions 22 and 23 raised from both ends of the first bottom portion 21. The substantially U-shaped second member 30 includes a second bottom portion 31 and second vertical wall portions 32 and 33 raised from both ends of the second bottom portion 31. In the end portion 20 b of the first member 20, a direction (separated from the second member 30) continuously to the base ends of the first vertical wall portion 23 on the rear side, the first bottom portion 21, and the first vertical wall portion 22 on the front side ( A first guide portion 26 that is bent inwardly is formed. At the end portion 30 b of the second member 30, a second guide portion 36 that is bent at an end of the second vertical wall portion 32 on the front side so as to incline in a direction (outside) away from the first vertical wall portion 22 on the front side. Is formed. When the first and second members 20 and 30 are viewed from the extending direction, the first guide portion 26 and the second guide portion 36 are continuously formed in a substantially U shape over the entire circumference.

  In such a rear body 10, the third member 40 is overlapped and joined to the inner peripheral surface 20 c of the first member 20, and thereafter, the inner peripheral surface portion 30 a of the second member 30 is connected to the outer peripheral surface portion of the first member 20. The outer peripheral surface portion 20a of the first member 20 and the lower surface portion 40a of the third member 40 are joined to the inner peripheral surface portion 30a of the second member 30 so as to overlap with 20a.

  The first guide portion 26 is formed continuously from the first bottom portion 21 to the base ends of the first vertical wall portions 22 and 23. Thereby, the superposition with the first member 20 can be smoothly performed without hindering the joining of the third member 40. On the other hand, the second guide portion 36 is formed only at the tips of the second vertical wall portions 32 and 33 of the second member 30. For this reason, it is possible to suppress the occurrence of dead space that may occur at the periphery of the second guide portion 36. That is, according to the present invention, the rear vehicle body 10 can be assembled smoothly while effectively utilizing the space.

  In addition, even when the third member 40 is provided across the first and second members 20 and 30 in order to reinforce the overlapped portions of the first and second members 20 and 30, the first and second members The guide portions 26 and 36 can set the guide shape without interruption over the entire circumference of the terminal, and can avoid interference between the terminals. Therefore, assembling property can be improved and productivity can be increased.

  Furthermore, the third member 40 straddling the first and second members 20, 30 can be provided, and the portion where the first and second members 20, 30 are overlapped can be reinforced by the third member 40. Therefore, rigidity and strength can be increased even in a portion where the first member 20 and the second member 30 where the stress is easily concentrated, and local deformation due to the stress concentration can be suppressed.

  In addition, the first member 20 and the second member 30 are formed in a substantially U-shape, and the outer peripheral surface portion 20a of the U-shaped cross section of the first member 20 is connected to the inner peripheral surface portion 30a of the U-shaped cross section of the second member 30. Are superimposed. Thereby, the site | part with which the 2nd member 30 was piled up on the 1st member 20 becomes a structure where the U-shaped cross section was piled up twice. Therefore, rigidity and strength can be increased even at the joint portion between the first member 20 and the second member 30 where stress is likely to concentrate, and local deformation due to stress concentration can be suppressed. Further, by forming a closed cross-sectional structure with the third member 40 and the U-shaped cross section, the deformation in which the opening of the U-shaped cross section expands outward in the cross section or contracts in the cross section in the third direction. It can suppress by the member 40 and can raise the rigidity of a member single-piece | unit.

  Furthermore, by forming the guide portion on the entire circumference of the U-shaped cross section of the first member 20, the terminals of the first member 20 and the second member 30 are spread over the entire circumference of the U-shaped cross section when assembled. Interference can be prevented.

  In addition, the first guide portion 26 is formed longer in the circumferential direction than the second guide portion 36. When the first guide part 26 is formed, the first guide part 26 is inclined toward the center of the cross section, so that the first and second members 20, Interference with other parts arranged in the vicinity of 30 can be avoided.

  Note that the rear vehicle body adopting the vehicle body structure according to the present invention includes the first guide portion 26 continuously extending to the base ends of the first vertical wall portion 23 on the rear side, the first bottom portion 21 and the first vertical wall portion 22 on the front side. The first guide portion 26 is continuously formed up to the base ends of the first vertical wall portion 22 on the front side, the first bottom portion 21 and the first vertical wall portion 23 on the rear side. Even if it is, it is applicable. Furthermore, the present invention can be applied to parts other than the rear vehicle body.

  The front and rear, left and right, and top and bottom described in the embodiments, including other parts, are used for easy understanding of the embodiments. The present invention is not limited to the form of the embodiment as long as the effects and effects are exhibited.

  The vehicle body structure of the present invention is suitable for a rear vehicle body of a passenger car.

10 ... Rear body (body)
20 ... Parcel cross member (first member)
20a ... (of the first member) outer peripheral surface (first surface portion)
20b ... end of (first member) 20c ... inner peripheral surface (back surface) of (first member)
21 ... 1st bottom part 22 ... (front side) 1st vertical wall part (the other 1st vertical wall part)
23 ... (rear side) first vertical wall (one first vertical wall)
26 ... 1st guide part 30 ... Extension (2nd member)
30a ... (the second member) inner peripheral surface (second surface portion)
30b ... end of (second member) 31 ... second bottom 32 ... (front) second vertical wall (the other first vertical wall)
33 ... (rear side) second vertical wall (one second vertical wall)
36 ... 2nd guide part 40 ... Parcel shelf (3rd member)
40a (lower surface of the third member) (third surface portion)
O ... center line P1 ... part where the third face part is overlapped in the first face part P2 ... part where the third face part is overlapped in the second face part P3 ... three-piece joint

Claims (4)

It has three members, a first member, a second member, and a third member that constitute the vehicle body,
The end portion of the first surface portion that is an arbitrary surface of the first member is overlapped with the end portion of the second surface portion that is an arbitrary surface of the second member such that the surfaces overlap each other,
A third surface portion, which is an arbitrary surface in the third member, is superimposed on the back surface of the portion where the second surface portion is superimposed in the first surface portion,
The third surface portion is a vehicle body structure arranged so as to straddle along the extending direction of the first surface portion and the second surface portion,
A first guide portion that is inclined so as to be separated from the second member is formed in a portion of the end portion of the first surface portion excluding a portion where the third surface portion is overlapped,
A second guide portion that is inclined so as to be separated from the first member is formed in a portion of the end portion of the second surface portion where the third surface portion is overlapped. Body structure.   2. The vehicle body structure according to claim 1, wherein the first member to the third member have a three-sheet joint portion in which three plate members are superimposed and joined. The first member and the second member are formed so that a cross section orthogonal to the extending direction includes a substantially U-shaped cross section, and the U of the second member is formed on an outer peripheral surface of the U-shaped cross section of the first member. By overlapping the letter-shaped cross section, the end portions of the first member and the second member overlap,
The third member is joined to the inner peripheral surface of each U-shaped cross section of the first member and the second member to form a closed cross section,
The first guide portion is formed on the entire circumference of the U-shaped cross section of the first member except for the portion where the third member is overlapped, and as it goes toward the end of the first member. Formed to incline toward the cross-sectional center side,
The vehicle body structure according to claim 1, wherein the second guide portion is formed so as to be inclined toward a side away from the center of the cross section. The ends in the extending direction of the second member formed by bending the plate material in a substantially U shape are arranged on the outer sides of the ends in the extending direction of the first member formed by bending the plate material in a substantially U shape. The openings are overlapped and joined together in the same direction,
A vehicle body structure in which a plate-like third member is joined to the inner peripheral surfaces of the first member and the second member so as to cover at least a portion where the first member and the second member are overlaid. There,
The substantially U-shaped first member includes a first bottom portion and first vertical wall portions raised from both ends of the first bottom portion,
The substantially U-shaped second member includes a second bottom portion and second vertical wall portions raised from both ends of the second bottom portion,
At the end of the first member, it is bent in a direction away from the second member continuously to one of the first vertical wall portion, the first bottom portion, and the base end of the other first vertical wall portion. A first guide portion is formed;
At the end of the second member, a second guide portion bent in a direction away from the other first vertical wall portion is provided at the tip of the second vertical wall portion corresponding to the other first vertical wall portion. Formed,
A vehicle body structure, wherein the first guide portion and the second guide portion are formed continuously in a substantially U shape when the first and second members are viewed from the extending direction.

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