Body structure

Abstract

To provide a vehicle body structure capable of suppressing movement of a cargo even if two braces become unfixed.SOLUTION: A first attachment part 22a is located on a rear side of a vehicle body relative to a second attachment part 32a. A first brace 20 and a second brace 30 intersect in a side view. A first widthwise extending portion 21 is located on a front side of the vehicle body of a second widthwise extending portion 31 and is fixed to the second widthwise extending portion 31. Therefore, even if the first widthwise extending portion 21 and the second widthwise extending portion 31 become unfixed, the second brace 30 is physically caught on the first brace 20 from the rear side of the vehicle body, to suppress movement of the second brace 30 toward the front side of the vehicle body with respect to the first brace 20. Thereby, a relative movement of the first and the second braces 20 and 30 can be suppressed, leading to suppression of movement of a cargo M toward the front side of the vehicle body.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a vehicle body structure that uses first and second braces fixed to each other to suppress movement of cargo. [Background technology]

[0002] Japanese Patent Application Publication No. 2010-115996 discloses a vehicle body structure (vehicle rear structure) in which a rod-shaped brace is attached to suppress the movement of cargo so that the cargo moving to the front side of the vehicle body does not hit the seat back.

[0003] As shown in Figure 7, it is conceivable to use two braces to fasten the braces together so that they can withstand the load from the cargo M. However, as shown in Figure 8, if the braces 2, 3 become loose, the relative movement of the braces 2, 3 cannot be stopped, and there is a risk that it will become impossible to stop the movement of the cargo M towards the front of the vehicle. For this reason, a structure is required that can stop the relative movement of the braces 2, 3 and prevent the cargo M from moving towards the front of the vehicle even if the braces 2, 3 become loose. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2010-115996 A Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a vehicle body structure that can prevent cargo from shifting even if the two braces become dislodged from each other. [Means for solving the problem]

[0006] The present invention which achieves the above object is as follows. (1) A first brace and a second brace, the first brace has a first widthwise extending portion that extends linearly in the vehicle width direction, a first downward extending portion that bends and extends downward from each end of the first widthwise extending portion in the vehicle width direction, and a first mounting portion that is connected to a lower end of the first downward extending portion and is mounted to a floor panel of the vehicle body, the second brace has a second widthwise extending portion extending in a direction parallel to the first widthwise extending portion, a second downward extending portion bending and extending downward from each end of the second widthwise extending portion in the vehicle width direction, and a second mounting portion connected to a lower end of the second downward extending portion and mounted to the floor panel, The first mounting portion is located rearward of the second mounting portion, In a side view, the first brace and the second brace intersect, a vehicle body structure, wherein the first widthwise extending portion is located on a vehicle body front side of the second widthwise extending portion and is fixed to the second widthwise extending portion. (2) The second downward extending portion has shoulder portions that bend from each end portion in the vehicle width direction of the second widthwise extending portion and extend inclined downward and outward in the vehicle width direction, and legs that bend from lower ends of the shoulder portions and extend downward, The vehicle body structure described in (1), wherein the shoulder portion of the second downward extension portion is located below the first brace. Effect of the Invention

[0007] According to the vehicle body structure of (1) above, the first mounting portion is located further rearward in the vehicle body than the second mounting portion, the first brace and the second brace intersect in a side view, and the first widthwise extension portion is located on the vehicle body front side of the second widthwise extension portion and is fixed to the second widthwise extension portion, thereby obtaining the following effects. When the fixation between the first widthwise extension portion and the second widthwise extension portion (fixation of the first and second braces) is not released, even if cargo positioned on the rear side of the first and second braces attempts to move toward the front of the vehicle, the cargo abuts against the second widthwise extension portion, thereby preventing the cargo from moving toward the front of the vehicle. On the other hand, even if the first widthwise extending portion and the second widthwise extending portion (the first and second braces) become detached from each other, the second brace is physically caught by the first brace from the rear side of the vehicle body, and the second brace is prevented from moving toward the front side of the vehicle body relative to the first brace. This makes it possible to suppress the relative movement of the first and second braces, and thus to suppress the movement of the load toward the front side of the vehicle body.

[0008] According to the vehicle body structure of (2) above, the shoulder of the second downward extension is located below the first brace, so even if the first widthwise extension and the second widthwise extension (the first and second braces) are loosened, the first brace is physically caught on the shoulder of the second brace from above (the first brace rests on the shoulder of the second brace), preventing the first brace from moving downward relative to the second brace. Thus, the relative movement of the first and second braces can be effectively prevented. [Brief description of the drawings]

[0009] [Figure 1] 1 is a perspective view of a vehicle body structure according to an embodiment of the present invention; [Diagram 2] FIG. 2 is an exploded perspective view of the vehicle body structure according to the embodiment of the present invention. [Diagram 3] 1 is a side view of a vehicle body structure according to an embodiment of the present invention; [Figure 4] 2 is a cross-sectional view taken along line AA in FIG. 1. [Diagram 5] 1 is a plan view of a vehicle body structure according to an embodiment of the present invention; [Figure 6] FIG. 2 is a perspective view of the vehicle body structure according to the embodiment of the present invention when the load is a tire. [Figure 7] FIG. 1 is a side view of a conventional car body structure in which two braces are used to fasten the braces together. [Figure 8] FIG. 1 is a side view of a conventional car body structure in which two braces are used to fasten the braces together. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] A vehicle body structure 10 according to an embodiment of the present invention will be described below with reference to the drawings. In the drawings, UPR indicates the upper side of the vehicle body, FR indicates the front side of the vehicle body, and RH indicates the right side in the vehicle width direction.

[0011] As shown in Fig. 3, the vehicle body structure 10 is provided to prevent a load (luggage) M, which is loaded in a luggage compartment located behind a seat back (not shown) of the vehicle body, from moving toward the front of the vehicle body during a frontal collision of the vehicle, etc. The vehicle body structure 10 is a structure that complies with UN-R17 (United Nations Regulation No. 17), and the load M is a predetermined test block used for UN-R17. The load M is placed on a rear floor trim 110. The rear floor trim 110 is made of resin, and is provided on a sheet metal floor panel (rear floor panel) 100 that constitutes the vehicle body floor of the luggage compartment.

[0012] As shown in FIG. 1, the vehicle body structure 10 has a first brace 20 and a second brace 30.

[0013] The first brace 20 and the second brace 30 may be made of the same material or different materials as long as they can be joined to each other by welding.

[0014] The first brace 20 may be a one-component structure or a multiple-component structure. The first brace 20 has a first widthwise extending portion 21 extending linearly in the vehicle width direction, a first downward extending portion 22 bending and extending downward from each end 21a in the vehicle width direction of the first widthwise extending portion 21, and a first mounting portion 23 connected to the lower end of the first downward extending portion 22 and mounted to the floor panel 100 by bolting or the like.

[0015] The first brace 20 has a pipe shape with a cylindrical cross section except for the first mounting portion 23. The first downward extending portion 22 is bent from each end portion 21a in the vehicle width direction of the first widthwise extending portion 21 and extends linearly, inclined downward and toward the rear of the vehicle body.

[0016] The second brace 30 may be a one-component structure or a multiple-component structure. The second brace 30 has a second widthwise extending portion 31 extending linearly in the vehicle width direction, which is a direction parallel to the first widthwise extending portion 21, a second downward extending portion 32 bending and extending downward from each end 31a in the vehicle width direction of the second widthwise extending portion 31, and a second mounting portion 33 connected to the lower end of the second downward extending portion 32 and mounted to the floor panel 100 by bolting or the like.

[0017] The second brace 30 has a pipe shape with a cylindrical cross section except for the second mounting portion 33. The inner and outer diameters of the pipe-shaped second brace 30 portion are the same as (including approximately the same as) the inner and outer diameters of the pipe-shaped first brace 20 portion.

[0018] The second downward extending portion 32 has shoulder portions 32a that bend from each vehicle width end portion 31a of the second widthwise extending portion 31 and extend inclined outward and downward in the vehicle width direction and toward the front of the vehicle body, and leg portions 32b that bend from the lower end portion 32a1 of the shoulder portions 32a and extend vertically downward (including approximately vertically downward).

[0019] The relationship between the first brace 20 and the second brace 30 is as follows. (i) The first attachment portion 23 is located further rearward on the vehicle body than the second attachment portion 33. (ii) As shown in Figures 3 and 4, when viewed from the side (viewed in the vehicle width direction), the first brace 20 and the second brace 30 intersect so that the entirety or almost the entirety of the second widthwise extending portion 31 is hidden by or near the upper end portion of the first downward extending portion 22. (iii) The first widthwise extending portion 21 is located on the front side of the second widthwise extending portion 31, is in contact with the second widthwise extending portion 31 from the front side of the vehicle body, and is joined and fixed to the second widthwise extending portion 31 directly or via a separate member by welding (e.g., arc welding) or the like. (iv) As shown in Fig. 5, the first brace 20 and the second brace 30 intersect at the position of a shoulder 32a of the second brace 30 in a plan view. The shoulder 32a is located below (vertically below) the position from the first widthwise extending portion 21 to the first downward extending portion 22 of the first brace 20. The shoulder 32a may be spaced apart from the first brace 20 by about several mm in the up-down direction, or may be in contact with the first brace 20.

[0020] Next, the operation and effects of the embodiment of the present invention will be described. (A) The first mounting portion 23 is located rearward of the second mounting portion 33, the first brace 20 and the second brace 30 intersect in a side view, and the first widthwise extending portion 21 is located forward of the second widthwise extending portion 31 and is fixed to the second widthwise extending portion 31. (A-1) When the fixation between the first widthwise extension portion 21 and the second widthwise extension portion 31 (fixation of the first and second braces 20, 30) is not released, even if cargo M located on the rear side of the first and second braces 20, 30 attempts to move toward the front of the vehicle, the cargo M abuts against the second widthwise extension portion 31, thereby preventing the cargo M from moving toward the front of the vehicle. (A-2) Even if the fixation between the first widthwise extension portion 21 and the second widthwise extension portion 31 (fixation between the first and second braces 20, 30) comes loose, the second brace 30 is physically caught by the first brace 20 from the rear side of the vehicle body, and the second brace 30 is prevented from moving toward the front of the vehicle body relative to the first brace 20. Thus, the relative movement between the first and second braces 20, 30 can be prevented, and the movement of the load M toward the front of the vehicle body can be prevented.

[0021] (B) Since the shoulder 32a of the second downward extension 32 is located below the first brace 20, even if the first widthwise extension 21 and the second widthwise extension 31 are loosened (the first and second braces 20, 30 are loosened), the first brace 20 is physically caught by the second brace 30 from above (the first brace 20 rests on the shoulder 32a of the second brace 30 and is supported from below by the second brace 30), and the first brace 20 is prevented from moving downward relative to the second brace 30. Thus, the relative movement of the first and second braces 20, 30 can be effectively prevented.

[0022] (C) When the first and second braces 20, 30 are fixed to each other by welding (for example, arc welding) the first widthwise extending portion 21 and the second widthwise extending portion 31, both the first and second widthwise extending portions 21, 31 are pipe-shaped, so it is difficult to stabilize the quality of the welding, which not only requires rework, but also makes it difficult to ensure strong welding strength. Therefore, there is a risk that the welding will break if the first and second braces 20, 30 are only fixed together, and in this case, the relative movement of the first and second braces 20, 30 cannot be stopped, and it may be difficult to suppress the movement of the load M toward the front of the vehicle body. However, in the embodiment of the present invention, by using the above (A) and (B), the first and second braces 20, 30 are fixed together without relying on welding, and the braces are physically hooked together, making it possible to create a highly robust structure. As a result, as shown in FIG. 6, not only is it compatible with UN-R17, but it is also possible to achieve a highly robust design, even in the case where space (a relatively large space) is required to place, for example, four tires as cargo M. [Explanation of symbols]

[0023] 10 Body structure 20. First Brace 21 First widthwise extending portion 21a: Vehicle width direction end portion of the first width direction extension portion 22 First downward extension 23 First mounting part 30 Second Brace 31 Second widthwise extending portion 31a: End portion in the vehicle width direction of the second widthwise extending portion 32 Second downward extension 33 Second mounting part 32a Shoulder 32b Legs 100 Rear floor panel 110 Rear floor trim M Cargo

Claims

1. A first brace and a second brace, the first brace has a first widthwise extending portion that extends linearly in the vehicle width direction, a first downward extending portion that bends and extends downward from each end of the first widthwise extending portion in the vehicle width direction, and a first mounting portion that is connected to a lower end of the first downward extending portion and is mounted to a floor panel of the vehicle body, the second brace has a second widthwise extending portion extending in a direction parallel to the first widthwise extending portion, a second downward extending portion bending and extending downward from each end of the second widthwise extending portion in the vehicle width direction, and a second mounting portion connected to a lower end of the second downward extending portion and mounted to the floor panel, A load is provided on the vehicle body rear side of the first brace and the second brace, The first mounting portion is located rearward of the second mounting portion, In a side view, the first brace and the second brace intersect, A vehicle body structure, wherein the first widthwise extending portion is located on a vehicle body front side of the second widthwise extending portion and is fixed to the second widthwise extending portion.

2. the second downward extending portion has shoulder portions that bend from each end portion in the vehicle width direction of the second widthwise extending portion and extend inclined downward and outward in the vehicle width direction, and a leg portion that bends from a lower end portion of the shoulder portion and extends downward, The vehicle body structure according to claim 1 , wherein the shoulder portion of the second downward extension portion is located below the first brace.

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