Vehicle rear part structure

Abstract

To inhibit a seat cushion of a rear seat from approaching a high voltage device during a frontal collision of a vehicle.SOLUTION: In a vehicle rear part structure 12, a high voltage device 98 is disposed below a seat cushion 16 of a rear seat 14 of a vehicle. The seat cushion 16 includes a cushion frame 22 disposed below a seat surface 18 on which an occupant 100 is seated. A front end 24 of the cushion frame 22 is connected to a floor panel 56 through one or more front legs 40 and the cushion frame 22 inclines downward from the front side to the rear side. The cushion frame 22 includes a skeleton member 30 which is located below a thigh part 100a of the occupant 100 when the occupant 100 is seated on the seat surface 18 and extends in a vehicle width direction. The vehicle rear part structure 12 is provided with: a cross member 42 spanning between a pair of rear side members extending in a front-back direction at a rear of the vehicle; and a bracket 60 disposed on the cross member 42 and connected to the skeleton member 30.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a vehicle rear structure, and more particularly to a structure in which a high-voltage device is disposed below a rear seat cushion of a vehicle. [Background technology]

[0002] Electric vehicles such as hybrid electric vehicles (HEVs) and plug-in hybrid electric vehicles (PHEVs) have been known for some time. Electric vehicles are equipped with a battery that supplies power to a drive motor. A high-voltage device including the battery is located, for example, under the seat cushion of a rear seat.

[0003] Patent Document 1 discloses a vehicle rear structure that includes a load transfer bar that is arranged below a rear seat cushion of the vehicle along the vehicle width direction and that receives the load during a side collision. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-37215 Summary of the Invention [Problem to be solved by the invention]

[0005] The seat cushion of the rear seat includes a cushion frame disposed below the seat surface on which the occupant sits. A high-voltage device including a battery is disposed between the cushion frame and the floor panel. The front end of the cushion frame is connected to the floor panel via one or more front legs, and the cushion frame slopes downward from the front to the rear. The rear end of the cushion frame is connected to the floor panel. The cushion frame also includes a skeletal member, such as a pipe, extending in the vehicle width direction and positioned below the occupant's thighs when seated on the seat surface.

[0006] In this structure, if a vehicle experiences a frontal collision and an occupant is seated in the rear seat, the occupant's buttocks sink into the seat cushion and move forward due to the inertial force of the collision. The occupant's buttocks are received by the frame member extending in the vehicle width direction via the cushion material. However, the load from the occupant may cause the frame member to deform downward, or the deformation of the frame member may increase the load on the front legs of the rear seat, causing the front legs to deform. This may cause the seat cushion to displace downward, bringing the underside of the seat cushion closer to the high-voltage device.

[0007] An object of the present invention is to prevent a seat cushion of a rear seat from coming close to a high-voltage device when a vehicle is involved in a frontal collision. [Means for solving the problem]

[0008] The vehicle rear structure according to the present invention includes a high-voltage device disposed under a seat cushion of a rear seat of a vehicle, the seat cushion including a cushion frame disposed under a seat surface on which an occupant sits. The high-voltage device is disposed between the cushion frame and a floor panel. The front end of the cushion frame is connected to the floor panel via one or more front legs, the cushion frame slopes downward from the front to the rear, and the rear end of the cushion frame is connected to the floor panel. The cushion frame includes a framework member extending in the vehicle width direction and positioned below the thighs of the occupant when seated on the seat surface. The vehicle rear structure is characterized by including a cross member spanning between a pair of rear side members extending in the fore-and-aft direction at the rear of the vehicle, and a bracket disposed on the cross member and connected to the framework member.

[0009] With this configuration, in the event of a frontal collision, the load input to the frame member from the occupant sitting in the rear seat is received by the cross member via the bracket. This prevents the frame member from deforming downward and the resulting deformation of the front legs. This prevents the seat cushion from coming close to the high-voltage device.

[0010] In the vehicle rear structure according to the present invention, the bracket may be provided below the center in the vehicle width direction of a seating area where the occupant sits.

[0011] With this configuration, the bracket is provided in a portion of the skeletal member where a large load is input from the occupant in the event of a frontal collision of the vehicle, thereby effectively preventing the skeletal member from deforming downward.

[0012] In the vehicle rear structure of the present invention, the bracket may include an upper bracket welded to the skeletal member, and a lower bracket bolted to the upper bracket and bolted to the floor panel arranged above the cross member.

[0013] This configuration allows for greater flexibility in assembling the brackets during vehicle manufacture. For example, the lower bracket can be bolted to the floor panel in advance, and then bolted to the upper bracket at a relatively high position, or conversely, the lower bracket can be bolted to the upper bracket in advance, and then bolted to the floor panel at a relatively low position.

[0014] In the vehicle rear structure of the present invention, the skeletal member may be a pipe, the upper bracket may include a bottom plate and two side plates extending upward from left and right ends of the bottom plate, the bottom plate of the upper bracket may be bolted to the lower bracket, and the two side plates of the upper bracket may each have a front end face welded to the outer peripheral surface of the lower rear part of the pipe and an upper end bent outward to the left and right to form a flange portion that faces the underside of the cushioning material of the seat cushion.

[0015] With this configuration, the upper bracket and the pipe can be simply connected, and the flange portion of the upper bracket can support the cushioning material of the seat cushion that descends due to the weight of the occupant in the event of a frontal collision of the vehicle. [Effects of the Invention]

[0016] According to the present invention, when a vehicle is involved in a frontal collision, it is possible to prevent the seat cushion of the rear seat from coming close to a high-voltage device. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 2 is a plan view showing the vehicle rear structure. [Figure 2] FIG. 2 is a cross-sectional view taken along the line A1-A1 in FIG. [Figure 3] 10A and 10B are diagrams for explaining a connection structure between a cross member and a floor panel. [Figure 4] FIG. [Figure 5] FIG. 10 is a front view showing the lower bracket [Figure 6] FIG. 5 is a cross-sectional view taken along line BB in FIG. 4. [Figure 7] FIG. 10 is a perspective view showing a bracket according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. However, the present invention is not limited to the embodiment described herein. In all drawings, the same elements are given the same reference numerals, and duplicate explanations will be omitted. In the following description, unless otherwise specified, terms indicating directions and orientations such as front, rear, left, right, up, down, etc. refer to directions and orientations relative to the vehicle. In each drawing, the arrow FR points forward, the arrow UP points upward, and the arrow RH points rightward.

[0019] FIG. 1 is a plan view showing a vehicle rear structure 12. FIG. 2 is a cross-sectional view taken along line A1-A1 in FIG. 1. The vehicle 10 is a hybrid electric vehicle (HEV) powered by an engine and a motor. Note that the vehicle 10 may also be another type of electric vehicle, such as a plug-in hybrid electric vehicle (PHEV) or a battery electric vehicle (BEV). The vehicle 10 is equipped with a battery that supplies power to the motor, which is the power source. As shown in FIG. 2, a high-voltage device 98 including the battery is disposed below the seat cushion 16 of the rear seat 14.

[0020] The vehicle 10 is a relatively small automobile and is equipped with a two-seater rear seat 14. In FIG. 1, two seating areas 20 of the rear seat 14 are indicated by dashed lines. The rear seat 14 is disposed above a floor panel 56. The floor panel 56 is formed by pressing a steel plate.

[0021] The floor panel 56 is provided between the pair of rockers 48 and between the pair of rear side members 50. Each of the two rockers 48 has a closed cross section when viewed from the front-rear direction, and extends in the front-rear direction.

[0022] The pair of rear side members 50 are vehicle frame members connected to the rear ends of the pair of rockers 48. Each of the two rear side members 50 has a closed cross section when viewed from the front-to-rear direction and extends in the front-to-rear direction. As shown in FIG. 1 , the front portions of the two rear side members 50 are provided so as to extend inward in the vehicle width direction from the front to the rear and to slope upward.

[0023] The rear seat 14 includes a seat cushion 16 and a seat back (not shown) connected to the rear of the seat cushion 16. The seat cushion 16 includes a cushion frame 22 and a cushion material 38 (see FIG. 2). The cushion material 38 is covered with a seat covering (not shown) and forms the seat surface 18 on which the occupant 100 sits.

[0024] The cushion frame 22 is disposed below the seat surface 18. The cushion frame 22 is made of metal, and as shown in FIG. 1, includes a front pipe 28, a rear pipe 30, two connecting members 34, and two support members 32. The front pipe 28 extends in the vehicle width direction, with both left and right ends bent rearward. The rear pipe 30 is located rearward of the front pipe 28 and extends in the vehicle width direction. At each of the left and right ends of the seat cushion 16, the ends of the front pipe 28 and the rear pipe 30 are welded to the connecting members 34. Each of the two connecting members 34 extends in the front-rear direction, with its rear end fastened to the upper surface of the rear side member 50 by a bolt 91.

[0025] The two support members 32 are disposed between the two connecting members 34 and spaced apart in the vehicle width direction. Each of the two support members 32 has a generally plate shape and extends in the front-to-rear direction, passing under the rear pipe 30. The front ends of the support members 32 are welded to the front pipe 28, and the rear ends of the support members 32 are fastened to the floor panel 56 with bolts 90. Each of the two support members 32 is welded to the rear pipe 30 in contact with the lower surface of the rear pipe 30.

[0026] Although not shown, the cushion frame 22 has a plurality of plate-like members that bridge between the front pipe 28 and the rear pipe 30, in addition to the two support members 32. That is, metal plate-like members are arranged in the region between the two support members 32 and in the region between the front pipe 28 and the rear pipe 30, which is the region outward in the vehicle width direction of each of the two support members 32. The front ends of the plate-like members are welded to the front pipe 28, and the rear ends of the plate-like members are welded to the rear pipe 30.

[0027] As shown in Figure 2, the cushion frame 22 slopes downward from the front to the rear. The rear pipe 30 is located lower than the front end of the front pipe 28, and both left and right end portions of the front pipe 28, the two connecting members 34 (see Figure 1), and the two support members 32 slope downward from the front to the rear.

[0028] The rear pipe 30 is a framework member of the seat cushion 16. As shown in FIG. 2, the rear pipe 30 is located below the thighs 100a of the occupant 100 when the occupant 100 is seated on the seat surface 18.

[0029] The front end of the front pipe 28 is the front end 24 of the cushion frame 22 and is connected to the floor panel 56 via four front legs 40 (see FIG. 1). The four front legs 40 are made of metal and are arranged at intervals in the vehicle width direction. The upper end of each of the four front legs 40 is welded to the front pipe 28 and the lower end is fastened to the floor panel 56 with bolts 92 (see FIG. 2). The rear ends of the two support members 32 are the rear ends 26 of the cushion frame 22 and are fastened to the floor panel 56 with bolts 90.

[0030] 2, the floor panel 56 includes an upper portion 56a, a lower portion 56b that is lower than the upper portion 56a, and a transition portion 56c between the upper portion 56a and the lower portion 56b, located below the seat cushion 16. The upper portion 56a is located below the rear portion of the seat cushion 16, and the lower portion 56b is located below the front portion of the seat cushion 16. The high-voltage device 98 is provided across the vehicle width direction between the front portion of the seat cushion 16 and the lower portion 56b of the floor panel 56. The high-voltage device 98 is fixed to the floor panel 56 via a bracket (not shown).

[0031] As shown in FIG. 1, the vehicle rear structure 12 includes a bracket 60 (shown schematically as a rectangle in the figure) provided below the center in the vehicle width direction of the seating area 20 where an occupant sits. Note that while FIG. 1 shows the bracket 60 provided only in the left seating area 20, the bracket 60 may also be provided in the right seating area 20. As shown in FIG. 2, the bracket 60 is a metal member connected to the rear pipe 30. As shown in FIGS. 2 and 4, the bracket 60 includes an upper bracket 64 and a lower bracket 62. The upper bracket 64 is welded to the rear pipe 30 and is fastened to the lower bracket 62 with a bolt 94 (see FIG. 4). The lower bracket 62 is fastened to the floor panel 56 (see FIG. 2) with two bolts 93. The bracket 60 will be described in detail later.

[0032] 2, a bubble shows an enlarged view of the underside of the lower bracket 62. A fixing member 58 and a floor cross member 42 (simply referred to as the cross member 42) are arranged on the back side of the corner between the upper step portion 56a and the transition portion 56c of the floor panel 56.

[0033] The fixing member 58 is a plate-like member with a generally L-shaped cross section that is provided only on the lower side of the bracket 60 and conforms to the rear surface of the floor panel 56. The fixing member 58 is joined to the rear surface of the floor panel 56 by spot welding. Two nuts 59 (only one of the nuts 59 is shown in FIG. 2) that receive the two bolts 93 of the lower bracket 62 are fixed to the rear surface of the fixing member 58.

[0034] The cross member 42 is disposed on the rear side of the floor panel 56 and forms a closed cross section with the floor panel 56. As shown in FIG. 1 , the cross member 42 extends in the vehicle width direction and spans between a pair of rear side members 50.

[0035] 2, the cross member 42 includes a main body 43 and two flange portions 45 extending from the upper and lower ends of the main body 43. The two flange portions 45 are spot-welded to a floor panel 56 at an interval in the vehicle width direction. Below the bracket 60, the two flange portions 45 are spot-welded to the floor panel 56 with a fixing member 58 sandwiched therebetween.

[0036] The upper view of Figure 3 shows cross sections of the floor panel 56 and the cross member 42 taken along lines A2-A2 and A3-A3 in Figure 1. As can be seen from the upper views of Figures 2 and 3, the front end of the upper step portion 56a of the floor panel 56 gradually becomes lower from the inside to the outside in the vehicle width direction (from line A1-A1 to line A3-A3). The longitudinal position of the transition portion 56c of the floor panel 56 is the same or nearly the same across the vehicle width direction below the seat cushion 16. As a result, the upper step portion 56a of the floor panel 56 slopes upward from the front to the rear at the outer end in the vehicle width direction.

[0037] 3 shows a portion of the front portion of the left rear side member 50. As described above, the front portion of the rear side member 50 slopes upward from the front to the rear. The upper step portion 56a of the floor panel 56 is placed on the flange 53 of the upwardly sloping rear side member 50 on the inner side in the vehicle width direction.

[0038] As shown in FIG. 1, the cross member 42 has an outer portion in the vehicle width direction that extends diagonally rearward in a plan view. In a cross section taken along line A1-A1 in FIG. 2, the cross member 42 is provided to straddle the transition portion 56c and the upper portion 56a of the floor panel 56. However, as shown in the upper view of FIG. 3, the outer portion of the cross member 42 is gradually displaced rearward in the vehicle width direction, with the cross-sectional shape gradually changing to a hat shape from the inner side to the outer side in the vehicle width direction. Furthermore, in a cross section taken along line A3-A3, the cross member 42 is connected to the back side of the upper portion 56a of the floor panel 56.

[0039] The cross member 42 is inclined upward from the front to the rear at its outer end in the vehicle width direction. As shown in the lower diagram of Figure 3, the cross member 42 is overlapped on the inner flange 53 in the vehicle width direction of the rear side member 50, which is also inclined upward.

[0040] As shown in the lower diagram of Figure 3, the rear side member 50 includes a main body 51 that has a hat-shaped cross section that is open at the top, and a top panel 54 that is arranged above the main body 51. The main body 51 includes two side plates 52 and two flanges 53 that protrude outward from the upper ends of the two side plates 52. The flanges 53 on the inner side of the main body 51 in the vehicle width direction have a recessed portion (not shown) that receives the main body 43 of the cross member 42, which has a downwardly convex shape.

[0041] The outer end of the upper step portion 56a of the floor panel 56 in the vehicle width direction and the outer end of the cross member 42 in the vehicle width direction are overlapped on the inner flange 53 of the rear side member 50 in the vehicle width direction and joined thereto by spot welding. In addition, the outer end of the cross member 42 in the vehicle width direction is bent downward and contacts the inner surface of the side plate 52 and is spot welded thereto. The top panel 54 is spot welded to each of the two flanges 53 at intervals along the front-to-rear direction. The outer end of the upper step portion 56a of the floor panel 56 in the vehicle width direction and the outer end of the cross member 42 in the vehicle width direction are sandwiched between the top panel 54 and the inner flange 53 in the vehicle width direction.

[0042] Although the above description has been given of the floor panel 56 and the left portion of the cross member 42 in the vehicle 10, the right portion of the floor panel 56 and the cross member 42 also have a similar structure, with left-right symmetry.

[0043] Fig. 4 is a perspective view showing the bracket 60 connected to the rear pipe 30. Fig. 5 is a front view showing the lower bracket 62. Fig. 6 is a cross-sectional view showing the cross section of the lower bracket 62 taken along line BB in Fig. 4. As shown in Fig. 4, the bracket 60 includes an upper bracket 64 and a lower bracket 62.

[0044] The upper bracket 64 includes a bottom plate 80 and two side plates 82 that protrude upward from the left and right ends of the bottom plate 80. The bottom plate 80 is in contact with the upper surface of the top plate 70 of the lower bracket 62 (see FIG. 5 ) and is fastened to the top plate 70 with bolts 94. Specifically, the bottom plate 80 of the upper bracket 64 and the top plate 70 of the lower bracket 62 each have a bolt insertion hole (not shown) through which the bolt 94 is inserted, and a nut 72 is fixed to the back side of the top plate 70 of the lower bracket 62. The bolt 94 is passed from the top side of the upper bracket 64 through the bolt insertion holes in the bottom plate 80 and top plate 70 and screwed into the nut 72 on the top plate 70.

[0045] The two side plates 82 of the upper bracket 64 are each cut out so that a front end face 83 thereof can receive the rear lower portion of the rear pipe 30. The two front end faces 83 are in contact with the outer peripheral surface of the rear lower portion of the rear pipe 30 and are joined to that outer peripheral surface by arc welding.

[0046] The upper ends of the two side plates 82 are bent outward to the left and right to form flanges 84. The two flanges 84 face the lower surface of the cushion material 38 of the seat cushion 16, as shown in FIG.

[0047] 5 and 6, the lower bracket 62 includes two side plates 68 arranged symmetrically on the left and right, a top plate 70 connecting the upper ends of the two side plates 68, and two bottom plates 66 extending outward to the left and right from the lower ends of the two side plates 68. As shown in FIG. 6, the front and rear end portions 69 of each of the two side plates 68 are bent inward. Therefore, the lower bracket 62 has high rigidity against a downward load input from the rear pipe 30 via the upper bracket 64.

[0048] The two bottom plates 66 of the lower bracket 62 are each in contact with the floor panel 56 (see the balloon diagram in FIG. 2 ) and are fastened to the floor panel 56 with bolts 93. Specifically, for the two bolts 93, bolt insertion holes for inserting the bolts 93 are formed in the bottom plate 66 of the lower bracket 62, the floor panel 56, and the fixing member 58, respectively, and nuts 59 are fixed to the back side of the fixing member 58. The two bolts 93 are each passed from the upper side of the lower bracket 62 through the bolt insertion holes of the bottom plate 66, the floor panel 56, and the fixing member 58, and are screwed into the nuts 59.

[0049] 2, the bracket 60 is disposed on the cross member 42. Next, the effects of the embodiment described above will be described.

[0050] 2, when the vehicle 10 is hit by a frontal collision, an inertial force acts downward and forward on the occupant 100 seated in the rear seat 14. This inertial force causes the buttocks 100b of the occupant 100 to sink into the seat cushion 16 and move forward, as shown by the two-dot chain line, and is received by the rear pipe 30 via the cushion material 38.

[0051] At this time, the downward load input from the occupant 100 to the rear pipe 30 is transmitted to the cross member 42 via the bracket 60 and received by the floor panel 56 and the pair of rear side members 50 connected to the cross member 42. This makes it possible to suppress downward deformation of the rear pipe 30. By suppressing deformation of the rear pipe 30, it is possible to reduce the load input to the front legs 40 of the rear seat 14, and suppress deformation of the front legs 40. This makes it possible to suppress the cushion frame 22 from coming close to the high-voltage device 98.

[0052] In particular, in the embodiment described above, the bracket 60 is provided below the center of the vehicle width direction of the seating area 20 (see Figure 1) where the occupant 100 is seated, thereby effectively suppressing downward deformation of the rear pipe 30.

[0053] Furthermore, according to the embodiment described above, deformation of the rear pipe 30 is suppressed during a frontal collision of the vehicle 10, thereby reducing the amount of sinking of the occupant 100 into the seat cushion 16. This prevents the lap belt 104 (see FIG. 2), which is a seat belt worn by the occupant 100, from coming off the pelvis, which is the desired position, and moving to the abdomen of the occupant 100.

[0054] Furthermore, according to the embodiment described above, the bracket 60 is composed of the upper bracket 64 and the lower bracket 62, which increases the degree of freedom in assembling the bracket 60 during the manufacture of the vehicle 10. For example, after the lower bracket 62 is fastened to the floor panel 56 in advance with two bolts 93, the lower bracket 62 and the upper bracket 64 can be fastened together with the bolt 94 at a relatively high position. Conversely, after the lower bracket 62 and the upper bracket 64 are fastened together with the bolt 94 in advance, the lower bracket 62 can be fastened to the floor panel 56 with the two bolts 93 at a relatively low position.

[0055] Furthermore, according to the embodiment described above, as shown in Fig. 4, the upper ends of the two side plates 82 of the upper bracket 64 are bent outward to the left and right to form flange portions 84. The two flange portions 84 face the underside of the cushion material 38 of the seat cushion 16 (see Fig. 2). Therefore, the two flange portions 84 can support the cushion material 38 that descends due to the weight of the occupant 100 in the event of a frontal collision of the vehicle 10.

[0056] In the embodiment described above, as shown in FIG. 2, the rear pipe 30 is positioned forward of the buttocks 100b of the occupant 100, and a large space is secured for the high-voltage device 98 in the fore-and-aft direction, so the bracket 60 is positioned rearward of the rear pipe 30 and supports the rear lower part of the rear pipe 30.

[0057] However, for example, by reducing the installation space in the front-to-rear direction of the high-voltage device 98 or by positioning the rear pipe 30 further rearward, the bracket 60 may be placed directly below the rear pipe 30 or at the front lower part thereof. In this way, the bracket 60 may support the rear pipe 30 directly below or at the front lower part thereof.

[0058] The brackets 60 do not necessarily have to be provided for all seating areas 20 (see FIG. 1 ) in which an occupant of the rear seat 14 can sit. That is, the brackets 60 may be provided only for the left seating area 20 as shown in FIG. 1 , or only for the right seating area 20. For example, in the design stage of the vehicle 10, the gap between the seat cushion 16 and the high-voltage device 98 at the center of each of the seating areas 20 in the vehicle width direction is confirmed. Then, the brackets 60 may be provided for seating areas 20 where the gap is narrow (less than a predetermined distance), and the brackets 60 may not be provided for seating areas 20 where the gap is wide (greater than the predetermined distance). It is also possible to provide two or more brackets 60 side by side for one seating area 20.

[0059] Furthermore, in the embodiment described above, the bracket 60 is composed of two parts, the upper bracket 64 and the lower bracket 62, but the bracket 60 may also be composed of a single part. Figure 7 shows an example of a bracket 160 composed of a single part.

[0060] 7, the bracket 160 includes a bottom 162, a pillar 164 extending upward from the front end of the bottom 162, two side portions 166 projecting upward from both left and right ends of the bottom 162 and projecting rearward from both left and right ends of the pillar 164, and a head 168 provided above the pillar 164 and the two side portions 166. A bolt insertion hole for inserting a bolt 193 is formed in the bottom 162 of the bracket 160. The bolt 193 is passed from the upper side of the bracket 160 through the bolt insertion hole of the bottom 162, floor panel 56 (see FIG. 2), and fixing member 58, and is screwed into a nut 59 of the fixing member 58.

[0061] The two side sections 166 of the bracket 160 have their ends folded outward to form a partially double structure, and the folded-back portions at the top of the side sections 166 protrude forward beyond the pillar section 164. The head section 168 of the bracket 160 is connected to the upper ends of the pillar section 164 and the two side sections 166, and has a plate shape bent so as to contact the outer peripheral surface of the lower rear section of the rear pipe 30. The head section 168 of the bracket 160 is joined to the lower rear section of the rear pipe 30 by welding.

[0062] In the embodiment using this bracket 160, when the vehicle 10 is involved in a frontal collision, the downward load input from the occupant to the rear pipe 30 can be transmitted to the cross member 42 via the bracket 160 and can be received by the cross member 42. Therefore, deformation of the rear pipe 30 can be suppressed, and the seat cushion 16 can be suppressed from approaching the high-voltage device 98. [Explanation of symbols]

[0063] 10 vehicle, 12 vehicle rear structure, 14 rear seat, 16 seat cushion, 18 seat surface, 20 seat surface area, 22 cushion frame, 24 front end, 26 rear end, 28 front pipe, 30 rear pipe (pipe, frame member), 32 support member, 34 connecting member, 38 cushion material, 40 front leg, 42 floor cross member (cross member), 43 main body, 45 flange, 48 rocker, 50 rear side member, 51 main body, 52 side plate, 53 flange, 54 top panel, 56 floor panel, 56a upper portion, 56b lower portion, 56c transition portion, 58 fixing member, 59 nut, 60 bracket, 62 lower bracket, 64 upper bracket, 66 bottom plate, 68 side plate, 69 end, 70 top plate, 72 nut, 80 Bottom plate, 82 side plate, 83 forward end face, 84 flange portion, 90-94 bolt, 98 high voltage equipment, 100 occupant, 100a thigh portion, 100b buttocks, 104 lap belt, 160 bracket, 162 bottom portion, 164 pillar portion, 166 side portion, 168 head portion, 193 bolt.

Claims

1. A vehicle rear structure in which a high-voltage device is disposed under a seat cushion of a rear seat of a vehicle, The seat cushion includes a cushion frame disposed below a seat surface on which an occupant sits, The high-voltage device is disposed between the cushion frame and the floor panel, a front end of the cushion frame connected to the floor panel via one or more front legs; The cushion frame is inclined downward from the front to the rear, and a rear end of the cushion frame is connected to the floor panel, the cushion frame includes a skeletal member extending in a vehicle width direction and positioned below the thighs of the occupant when the occupant sits on the seat surface, The vehicle rear structure includes: a cross member spanning a pair of rear side members extending in the front-rear direction at a rear portion of the vehicle; a bracket disposed on the cross member and connected to the framework member, Vehicle rear structure.

2. 2. The vehicle rear structure according to claim 1, The bracket is provided below the center in the vehicle width direction of a seat area where the occupant sits. Vehicle rear structure.

3. 3. The vehicle rear structure according to claim 1 or 2, The bracket includes an upper bracket welded to the frame member, and a lower bracket bolted to the upper bracket and bolted to the floor panel disposed above the cross member. Vehicle rear structure.

4. 4. The vehicle rear structure according to claim 3, the framework member is a pipe, The upper bracket includes a bottom plate and two side plates extending upward from left and right ends of the bottom plate, The bottom plate of the upper bracket is fastened to the lower bracket by bolts, The two side plates of the upper bracket each have a front end surface welded to the outer peripheral surface of the rear lower portion of the pipe, and an upper end bent outward to the left and right to form a flange portion facing the lower surface of the cushion material of the seat cushion. Vehicle rear structure.

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