Vehicular structure

Abstract

To provide a vehicular structure that easily suppresses the damage on an electrical component when a rear surface collision occurs.SOLUTION: A vehicular structure includes a rear floor panel, a rear floor cross member, an electrical component, and a bracket that fastens the electrical component to the rear floor panel. The rear floor panel includes a recess. The recess includes a bottom, a front wall, side walls, and a corner that connects the front wall and the side walls to each other. The electrical component is placed in the recess so as to face the corner. The bracket includes: a front fastening portion that is fastened to the rear floor panel at the front side of a vehicle relative to the electrical component; and a rear fastening portion that is fastened to the rear floor panel at the rear side of the vehicle relative to the electrical component. The front fastening portion is placed outwardly in the vehicle widthwise direction relative to the rear fastening portion, and the side walls include a first bead and a second bead both in certain structures, respectively.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a vehicle structure that can easily suppress damage to electrical components during a rear-end collision. [Background technology]

[0002] Patent Document 1 discloses an electric vehicle including a rear floor panel, a back panel to which the rear end of the rear floor panel is fixed, an electronic control unit disposed on the rear floor panel, and a bracket for fixing the electronic control unit to the rear floor panel. The rear floor panel has a front area and a rear area. The rear area has a recess that is recessed downward relative to the front area. The electronic control unit is disposed in the recess in the rear area. The bracket includes a first bracket and a second bracket. The first bracket has a portion fixed to the front of the electronic control unit and two first fixing portions located forward of the electronic control unit and fixed to the front area. The second bracket has a portion fixed to the rear of the electronic control unit and two second fixing portions located rearward of the electronic control unit and fixed to the back panel. The two first fixing portions are located to the left of the two second fixing portions in the vehicle width direction.

[0003] Patent Document 2 discloses a battery fixing structure for a vehicle that includes a rear floor panel and a battery arranged on the rear floor panel. The rear floor panel has a high stage portion, a low stage portion that is arranged rearward of the high stage portion, and a connecting portion that connects the high stage portion and the low stage portion. The connecting portion has a front wall portion and left and right side wall portions. The front wall portion connects the rear end edge of the high stage portion to the front end edge of the low stage portion. The left and right side wall portions are connected to the left and right side edges of the low stage portion. The left and right side edges of the front wall portion are connected to the left and right side wall portions. The battery is fixed to the low stage portion. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-109586 [Patent Document 2] Japanese Patent Publication No. 2022-125882 Summary of the Invention [Problem to be solved by the invention]

[0005] In Patent Document 1, the two first fixing points are disposed to the left of the two second fixing points in the direction along the vehicle width, so that in the event of a rear collision of the electric vehicle, when the electronic control unit is viewed from above, a force acts on the electronic control unit to rotate the electronic control unit counterclockwise. In Patent Document 1, by rotating the electronic control unit counterclockwise, forward movement of the electronic control unit is suppressed.

[0006] In Patent Document 2, when the vehicle is involved in a rear-end collision, the front wall of the connecting portion is deformed in a mountain-like shape so as to protrude upward and rearward due to the forward displacement of the lower stage portion.

[0007] There is a risk of a collision between a rotated electronic control unit as in Patent Document 1 and a deformed front wall portion as in Patent Document 2. If the electronic control unit collides with the front wall portion, there is a risk of the electronic control unit being damaged.

[0008] An object of the present invention is to provide a vehicle structure that can easily suppress damage to electrical components in the event of a rear-end collision. [Means for solving the problem]

[0009] A vehicle structure according to one aspect of the present invention includes a rear floor panel forming the rear underside of a vehicle, a rear floor cross member disposed on the upper or lower surface of the rear floor panel along the vehicle width, an electrical component disposed on the rear floor panel, and a bracket for fixing the electrical component to the rear floor panel. The rear floor panel has a recess recessed downwardly of the vehicle. The recess has a bottom, a front wall connected to the front edge of the bottom, side wall connected to the side edge of the bottom, and a corner connecting the front wall and the side wall. The electrical component is disposed within the recess facing the corner. The bracket has a front fixing portion fixed to the rear floor panel forward of the vehicle relative to the electrical component, and a rear fixing portion fixed to the rear floor panel rearward of the electrical component. The front fixing portion is disposed outwardly of the rear fixing portion. The side wall portion has first and second beads formed in a concave shape recessed toward the outside of the recess. The first bead is provided so as to extend from near the rear floor cross member toward the front of the vehicle, and the second bead is provided at a position adjacent to the first bead so as to extend vertically above and below the vehicle. [Effects of the Invention]

[0010] In the above vehicle structure, during a rear-end collision, the rear floor cross member receives a load directed from the rear of the vehicle to the front. As a result, deformation of the area of ​​the rear floor panel rearward of the rear floor cross member is limited to the rear floor cross member. The behavior of each part during this process is as follows: A force directed from the rear to the front acts on the bracket. Because the front fixing portion of the bracket is positioned outward of the rear fixing portion, when the bracket and electrical component are viewed from above, the front fixing portion and the front portion of the electrical component rotate in a direction toward the outside of the vehicle width. As the front fixing portion rotates, a load that rotates in a direction toward the outside of the vehicle width acts on the front wall portion of the recess and the corner portion connecting the front wall portion and the side wall portion. Because a first bead is provided on the side wall portion so as to extend from near the rear floor cross member toward the front of the vehicle, the rotating load is transmitted from the first bead to the rear floor cross member and is easily absorbed by the rear floor cross member. As a result, the second bead, located adjacent to the first bead, deforms to protrude outward from the side wall of the recess. The deformation of the second bead pulls the front wall and the corner outward within the vehicle width. Due to the behavior of the above components, the front wall and the corner are less likely to protrude upward and rearward compared to when the first bead is not located so as to extend forward from the vicinity of the rear floor cross member. This reduces the risk of rotating electrical components colliding with the front wall and the corner. Therefore, the above vehicle structure makes it easier to reduce damage to electrical components during a rear-end collision.

[0011] In the above vehicle structure, by providing the first bead so that it extends from near the rear floor cross member toward the front of the vehicle, damage to electrical components during a rear collision can be easily suppressed, and therefore it is not necessary to control deformation of the rear floor panel by separately providing an independent reinforcing member, etc. Therefore, the above vehicle structure can easily suppress increases in weight, decreases in productivity, and increases in cost. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a top view showing an outline of a vehicle structure according to an embodiment. [Figure 2]FIG. 2 is a bottom view showing an outline of the vehicle structure according to the embodiment. [Figure 3] FIG. 3 is a perspective view showing an outline of the vehicle structure of the embodiment. [Figure 4] FIG. 4 is a perspective view showing an outline of the vehicle structure according to the embodiment. [Figure 5] FIG. 5 is a top view showing the front and rear states of the vehicle structure of the embodiment at the time of a rear collision. [Figure 6] FIG. 6 is a top view showing the front and rear states of the vehicle structure of the comparative example during a rear collision. DETAILED DESCRIPTION OF THE INVENTION

[0013] An embodiment of the vehicle structure of the present invention will be described below with reference to the drawings. The same reference numerals in the drawings indicate the same or equivalent parts. The sizes of the components shown in the drawings are expressed for the purpose of clarity of explanation and do not necessarily represent the actual dimensions. In the drawings, "UP" indicates the top of a vehicle equipped with the vehicle structure 1 of the embodiment, "LWR" indicates the bottom, "FR" indicates the front, "RR" indicates the rear, "RH" indicates the right, and "LH" indicates the left. In the following description, "upper," "lower," "front," "rear," "right," and "left" respectively correspond to the "upper," "lower," "front," "rear," "right," and "left" of the vehicle.

[0014] <<Embodiment>> [Vehicle structure] A vehicle structure 1 according to an embodiment will be described with reference to Figures 1 to 5. The vehicle structure 1 according to the embodiment is provided on an electric vehicle. As shown in Figure 1, the vehicle structure 1 according to the embodiment includes a rear floor panel 2, a rear floor cross member (in this example, the second cross member 93 in Figure 2), an electrical component 3, and a bracket 4. The electrical component 3 is fixed to the rear floor panel 2 by the bracket 4. One of the features of the vehicle structure 1 according to the embodiment is that a recess 21 provided in the rear floor panel 2 has a first bead 271 and a second bead 272 of a specific structure.

[0015] [Rear floor panel] The rear floor panel 2 forms the underside of the rear of the vehicle. The rear floor panel 2 is made of, for example, a steel plate formed into a predetermined shape. The rear floor panel 2 has a front area 20f and a rear area 20r located rearward of the front area 20f. A rear seat (not shown) is located in the front area 20f. The rear area 20r has a recess 21 recessed downward in the vehicle. The recess 21 has a bottom 22, a front wall 23, a left side wall 24, and a right side wall 25. The bottom 22 is located lower than the front area 20f. The front wall 23 is connected to the rear end of the front area 20f and the front edge of the bottom 22. The left side wall 24 and the right side wall 25 are connected to the left and right edges of the bottom 22. The left and right edges of the front wall 23 are connected to the front edges of the left side wall 24 and the right side wall 25. A left corner 26L formed by the front wall 23 and the left side wall 24, and a right corner 26R formed by the front wall 23 and the right side wall 25 are rounded.

[0016] As shown in Figures 1, 3, and 4, the recess 21 of this example has a first bead 271 and a second bead 272. The first bead 271 and the second bead 272 ensure the rigidity of the right side wall portion 25 during normal use when no rear-end collision has occurred. As will be described later, the first bead 271 and the second bead 272 control deformation of the rear floor panel 2 during a rear-end collision. The first bead 271 and the second bead 272 are provided on the right side wall portion 25.

[0017] The first bead 271 is provided so as to extend from the vicinity of the right second cross member 932 (described later) to the front and rear of the vehicle. The first bead 271 is provided between the lower end and the upper end of the right sidewall 25. The first bead 271 is configured in a concave shape that recesses toward the outside of the right sidewall 25. The vicinity of the right second cross member 932 includes a portion overlapping with the right second cross member 932 and a portion forward of the right second cross member 932 on the vehicle. As shown in FIGS. 3 and 4 , the first bead 271 in this example extends forward from a portion overlapping with the right second cross member 932, which is fixed to the outer surface of the right sidewall 25, on the inner surface of the right sidewall 25. That is, the rear end of the first bead 271 in this example is provided at a position on the inner surface of the right sidewall 25 that overlaps with the right second cross member 932, which is fixed to the outer surface of the right sidewall 25. Unlike this example, the rear end of the first bead 271 may be provided on the inner surface of the right side wall portion 25 so as to be located forward of the right second cross member 932 fixed to the outer surface of the right side wall portion 25.

[0018] The second bead 272 is provided adjacent to the first bead 271 so as to extend vertically of the vehicle. The adjacent position refers to a position not directly connected to the first bead 271, i.e., a position where a gap is provided between the first bead 271 and the second bead 272. The second bead 272 is not particularly limited as long as it behaves as described below during a rear-end collision. The second bead 272 of this example is provided forward of the first bead 271. As shown in FIG. 1 , the second bead 272 of this example is provided slightly behind the front end of the inverter 31. The second bead 272 of this example is connected to the upper end of the right side wall 25. As shown in FIG. 4 , the lower end of the second bead 272 of this example is connected to a triangular region 26T surrounded by the bottom 22, the front wall 23, the right side wall 25, and the right corner 26R. The triangular region 26T of this example is a plane that slopes forward and to the right from the bottom 22. The second bead 272 is configured in a concave shape that is recessed toward the outside of the right side wall portion 25. The depth of the second bead 272, that is, the length from the inside to the outside of the right side wall portion 25, is shallower than the depth of the first bead 271.

[0019] As shown in Figures 3 and 4, the recess 21 of this example may have at least one third bead 273. However, the third bead 273 is not an essential component. The third bead 273 ensures the rigidity of the front wall portion 23 and the right corner portion 26R of the recess 21 during normal use. As will be described later, the third bead 273 controls deformation of the rear floor panel 2 during a rear-end collision. The third bead 273 is provided forward of the second bead 272. The third bead 273 is provided on at least one of the front wall portion 23 and the right corner portion 26R. The number of third beads 273 in this example is three. In this example, three third beads 273 are provided on the right corner portion 26R. The length and depth of the three third beads 273 can be selected as appropriate. The three third beads 273 are arranged such that the closer to the second bead 272 the third bead 273 is, the shorter the length and the shallower the depth of the third bead 273 is. The depth of the three third beads 273 is deeper than the depth of the second bead 272.

[0020] [Rear floor cross member] The rear floor cross member reinforces the rear floor panel 2. The rear floor cross member is arranged on the upper or lower surface of the rear floor panel 2 along the width of the vehicle. As shown in FIG. 2, the rear floor cross member has a first cross member 92 and a second cross member 93. In this example, left and right rear side members 91 and a central reinforcement 94 are fixed to the underside of the rear floor panel 2.

[0021] The left and right rear side members 91 reinforce the rear floor panel 2. The left and right rear side members 91 are long members that extend from the front to the rear of the vehicle. The left and right rear side members 91 are fixed to the left and right ends of the underside of the rear floor panel 2. The cross-sectional shape of the left and right rear side members 91 is a hat shape that forms a hollow closed cross section between the underside of the rear floor panel 2. The cross-section is a cut surface that is perpendicular to the longitudinal direction of the rear side members 91.

[0022] The first cross member 92 and the second cross member 93 are elongated members extending along the vehicle width. The first cross member 92 is fixed to the underside of the rear floor panel 2 forward of the recessed portion 21 so as to bridge between the left and right rear side members 91. The second cross member 93 has a left second cross member 931 and a right second cross member 932. In this example, the left second cross member 931 is fixed to the underside of the bottom 22 of the recessed portion 21 and the outer surface of the left side wall portion 24 so as to bridge between a central reinforcement 94 (described later) and the left rear side member 91. In this example, the right second cross member 932 is fixed to the underside of the bottom 22 of the recessed portion 21 and the outer surface of the right side wall portion 25 so as to bridge between the central reinforcement 94 (described later) and the right rear side member 91. Unlike this example, the second cross member 93 may be fixed to the upper surface of the rear floor panel 2, specifically the upper surface of the bottom 22 of the recess 21, the inner surface of the left side wall 24, and the inner surface of the right side wall 25. The cross-sectional shapes of the first cross member 92 and the second cross member 93 are hat-shaped, forming a hollow closed cross section between them and the underside of the rear floor panel 2. The cross section is a cut surface perpendicular to the longitudinal direction of the first cross member 92 and the second cross member 93.

[0023] The central reinforcement 94 reinforces the rear floor panel 2. The central reinforcement 94 is a long member that extends from the front to the rear of the vehicle. The central reinforcement 94 is fixed to the center of the outer surface of the front wall portion 23 and the lower surface of the bottom portion 22 of the recess 21 so as to extend rearward from the center of the first cross member 92. The cross-sectional shape of the central reinforcement 94 is a hat shape that forms a hollow closed cross section between itself and the lower surface of the rear floor panel 2. The cross-section is a cross section that is perpendicular to the longitudinal direction of the central reinforcement 94.

[0024] [Electrical components] As shown in FIGS. 1 and 3, the electrical component 3 is disposed on the rear floor panel 2. The electrical component 3 is fixed to the rear floor panel 2 by a bracket 4, which will be described later. The electrical component 3 is, for example, an inverter, a main battery, an auxiliary battery, a motor, a power control unit (PCU), or an electronic control unit (ECU). In this example, the electrical component 3 is an inverter 31. The inverter 31 is disposed on the right side within the recess 21. In this example, the inverter 31 is disposed so as to face the right corner 26R of the recess 21.

[0025] In this example, the electrical component 5 is also arranged on the rear floor panel 2. The electrical component 5 is fixed to the rear floor panel 2 by a member different from the bracket 4 described below. The electrical component 5 is a different type of electrical component from the electrical component 3. The electrical component 5 is, for example, an inverter, a main battery, an auxiliary battery, a motor, a power control unit, or an electronic control unit. The electrical component 5 in this example is an auxiliary battery 51. The auxiliary battery 51 is arranged on the left side within the recess 21.

[0026] [bracket] 1 and 3, the bracket 4 secures the electrical component 3 to the rear floor panel 2. The bracket 4 in this example has a front bracket 41 and a rear bracket .

[0027] The front bracket 41 connects the electrical component 3 to the rear floor panel 2 forward of the electrical component 3. The front bracket 41 in this example has a base 411 and two legs 412. Unlike this example, the number of legs 412 may be one or three or more. The base 411 is fixed to the front surface of the electrical component 3. The base 411 in this example has a width and thickness that substantially correspond to the width and thickness of the inverter 31. The two legs 412 extend from the left and right sides of the base 411 toward the front of the vehicle and to the right in the vehicle width direction. Each leg 412 has a front fixing portion 413 that is fixed to the rear floor panel 2 forward of the electrical component 3. The front fixing portion 413 is the portion of the front bracket 41 that is fixed to the rear floor panel 2. For convenience of explanation, in Figures 1, 3, 5, and 6, the front fixing portion 413 is attached to a bolt. Each front fixing portion 413 in this example is provided at the front end of each leg portion 412. Each front fixing portion 413 in this example is fixed to the front area 20f with a bolt.

[0028] As shown in Fig. 1, the front fixing part 413 is arranged further outward in the vehicle width than the rear fixing part 423 described below. For convenience of explanation, Fig. 1 shows an imaginary line that passes through the centers of the front fixing part 413 and the rear fixing part 423 and runs along the front and rear of the vehicle. Here, "the front fixing part 413 is arranged further outward in the vehicle width than the rear fixing part 423" does not mean that all of the front fixing parts 413 are arranged further outward in the vehicle width than all of the rear fixing parts 423. It means that when the positional relationship between the front fixing part 413 and the rear fixing part 423 is viewed in order from the outside to the inside of the vehicle width, each successive front fixing part 413 is arranged further outward in the vehicle width than the rear fixing part 423.

[0029] In the case where there are two front fixing parts 413 and one rear fixing part 423 as in this example, being arranged outside the vehicle width as described above means that the right front fixing part 413, which is the outermost part of the vehicle width, is arranged to the right, outside the vehicle width, of the rear fixing part 423. The left front fixing part 413, which is the second outermost part of the vehicle width, is located to the left, inside the vehicle width, of the rear fixing part 423, but the front fixing part 413 is said to be arranged outside the vehicle width of the rear fixing part 423, which will be described later.

[0030] Unlike this example, for example, when there are two each of the front fixing parts 413 and the rear fixing parts 423, being arranged outside the vehicle width as described above refers to the following arrangement of the front fixing parts 413 and the rear fixing parts 423: (1) The right front fixing part 413, which is the outermost part of the vehicle width, is arranged to the right, that is, outside the vehicle width, of the right rear fixing part 423, which is the outermost part of the vehicle width. (2) The left front fixing part 413, which is the second from the outer side of the vehicle width, is arranged to the right, that is, outside the vehicle width, of the left rear fixing part 423, which is the second from the outer side of the vehicle width. Even if the left front fixing part 413 is located to the left, that is, inside the vehicle width, of the right rear fixing part 423, the front fixing part 413 is still said to be arranged outside the vehicle width of the rear fixing part 423, which will be described later.

[0031] The rear bracket 42 connects the electrical component 3 to the rear floor panel 2 rearward of the electrical component 3. A front portion of the rear bracket 42 in this example is fixed to the underside of the rear end of the electrical component 3. The rear bracket 42 in this example has a width that substantially corresponds to the width of the inverter 31. The rear bracket 42 has a rear fixing portion 423 that is fixed to the rear floor panel 2 rearward of the electrical component 3. The rear fixing portion 423 is the portion of the rear bracket 42 that is fixed to the rear floor panel 2. The rear fixing portion 423 in this example is provided in the center of the rear portion of the rear bracket 42 in the direction along the vehicle width. The rear fixing portion 423 in this example is fixed to the bottom 22 of the recess 21 with a bolt.

[0032] [Behavior in rear-end collisions] During a rear-end collision of the vehicle, the second cross member 93 receives a load from the rear to the front. As a result, deformation of the area of ​​the rear floor panel 2 behind the second cross member 93 is limited to the second cross member 93. The behavior of each part during this process is as follows.

[0033] A force acting from the rear to the front acts on the bracket 4. Because the front fixing portion 413 of the bracket 4 is disposed further outward in the vehicle width direction than the rear fixing portion 423, when the bracket 4 and the inverter 31 are viewed from above, the front fixing portion 413 and the front portion of the inverter 31 rotate in a direction toward the right, which is the outside of the vehicle width, as shown by the bold black arrow in Figure 5. The rotation of the inverter 31 to the right prevents a collision between the inverter 31 and the auxiliary battery 32.

[0034] As the front fixing portion 413 rotates to the right, a load that rotates the front wall portion 23 and the right corner portion 26R of the recessed portion 21 to the right acts on them. The first bead 271 is provided on the inner surface of the right side wall portion 25 so as to extend forward of the vehicle from a position overlapping with the right second cross member 932. Therefore, the rotational load is transmitted from the first bead 271 to the right second cross member 932 and is easily received by the right second cross member 932. As a result, the second bead 272, which is located in front of the first bead 271, deforms to protrude toward the right, that is, outside the right side wall portion 25 of the recessed portion 21, as shown by the thick two-dot chain line in FIG. 5 . The provision of the third bead 273 makes the front wall portion 23 and the right corner portion 26R more likely to buckle to the right. More specifically, the right corner 26R buckles so as to fold to the right, starting from each of the multiple third beads 273. As a result, the second bead 272 is likely to deform and protrude to the right. In particular, there are three third beads 273, and the lengths of the three third beads 273 become shorter as they approach the second bead 272, and the depths of the three third beads 273 become shallower as they approach the second bead 272. Therefore, the rotational deformation of the front wall 23 and the right corner 26R is gradually suppressed, and the second bead 272 is likely to deform and protrude to the right. Energy absorption during a rear-end collision is substantially completed behind the second cross member 93. However, the second cross member 93 moves slightly forward of the vehicle. As a result of this movement, the first bead 271 also moves forward of the vehicle. As a result, the first bead 271 applies a load to the second bead 272. The second bead 272 is subject to loads from the front and rear of the vehicle, that is, the load causing the rotation and the load due to the forward displacement of the first bead 271, substantially simultaneously, and therefore is prone to deform so as to protrude to the right.

[0035] The deformation of the second bead 272 that causes it to protrude to the right pulls the front wall portion 23 and the right corner portion 26R to the right. Due to the above-described behavior, the vehicle structure 1 suppresses upward and rearward protrusion of the front wall portion 23 and the right corner portion 26R compared to the configuration shown in FIG. 6 (described later). Therefore, the front wall portion 23 and the right corner portion 26R deform as shown by the thick two-dot chain line in FIG. 5. The thick two-dot chain line does not overlap with the inverter 31. That is, the rotated inverter 31 is prevented from colliding with the front wall portion 23 and the right corner portion 26R. Even when the third bead 273 is not provided, the vehicle structure 1 is more likely to suppress the above-described collision compared to the configuration shown in FIG. 6 (described later). Therefore, the vehicle structure 1 is more likely to suppress damage to the inverter 31 during a rear-end collision.

[0036] In contrast, if the first bead 271 is not provided so as to extend forward from a position overlapping with the right second cross member 932 fixed to the outer surface of the right side wall 25, the upward and rearward deformation of the front wall 23 and the right corner 26R is not suppressed compared to the configuration shown in FIG. 5. As a result, the front wall 23 and the right corner 26R deform as shown by the thick two-dot chain line in FIG. 6. The thick two-dot chain line overlaps with the inverter 31. In other words, the rotating inverter 31 collides with the front wall 23 and the right corner 26R. Therefore, if the right side wall 25 does not have the first bead and the second bead, it is difficult to suppress damage to the inverter 31 in a rear-end collision.

[0037] The present invention is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0038] 1 Vehicle structure 2 Rear floor panel 20th floor front area 20th race rear area 21 Recess 22 Bottom 23 Front wall 24 Left side wall 25 Right side wall 26L left corner 26R Right corner 26T triangular area 271 First Bead 272 Second Bead 273 Third Bead 3 Electrical components 31 Inverter 4 Bracket 41 Front bracket 411 Base 412 Legs 413 Front fixation part 42 Rear bracket 423 Rear fixed part 5 Electrical components 51 Auxiliary battery 91 Rear side member 92 First cross member 93 Second cross member 931 left second cross member 932 Right second cross member 94 Central Reinforcement

Claims

[Claim 1] a rear floor panel that forms the underside of the rear of the vehicle; a rear floor cross member disposed on an upper surface or a lower surface of the rear floor panel along the vehicle width; an electrical component disposed on the rear floor panel; a bracket for fixing the electrical component to the rear floor panel, the rear floor panel has a recess recessed downwardly of the vehicle, the recess has a bottom, a front wall connected to a front edge of the bottom, a side wall connected to a side edge of the bottom, and a corner connecting the front wall and the side wall, The electrical component is disposed in the recess so as to face the corner portion, The bracket is a front fixing portion fixed to the rear floor panel forward of the electrical component; a rear fixing portion fixed to the rear floor panel rearward of the vehicle relative to the electrical component, The front fixing portion is disposed outward of the rear fixing portion in a vehicle width direction, the side wall portion has a first bead and a second bead formed in a concave shape recessed toward an outside of the recess, the first bead is provided so as to extend from a vicinity of the rear floor cross member toward the front of the vehicle, The second bead is provided adjacent to the first bead so as to extend vertically of the vehicle. Vehicle structure.

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