Cabin structure

Abstract

A first battery provided to the rear of the rear seat back and a second battery provided to the rear seat are arranged in a T-shape in a plan view, the left and right ends of the first battery are fixed to the luggage compartment of the floor, and the front end of the second battery extends forward beyond the kick-up portion and is fixed to the floor toward the inside of the front seat center console. Each back surface portion of each seat back of the rear seat in the forward-falling state and the upper surface portion of the first battery form a substantially flat and expanded ground surface of the luggage compartment.

Description

Technical Field

[0001] The present invention relates to a cabin structure including a driving battery case mounted above a floor panel in a vehicle such as a hybrid vehicle or an electric vehicle. Background Art

[0002] Regarding a cabin structure in which a driving battery is mounted above a floor panel in a hybrid vehicle, an electric vehicle, or the like, there is known a structure in which the driving battery is arranged (disposed) above a rear floor panel of a luggage compartment as exemplified in Patent Document 1.

[0003] However, if the driving battery is to be mounted above the rear floor of the luggage compartment while ensuring the battery capacity, the luggage compartment floor will become higher, resulting in insufficient actual height of the luggage compartment space. This technical problem is particularly prominent in vehicles with a low roof height and emphasis on style.

[0004] In addition, Patent Document 2 proposes to arrange a driving battery, that is, to arrange a driving battery box of the driving battery, in the area below the rear seat portion arranged above the floor. However, this solution has the technical problem that the height of the rear seat portion becomes higher and the headroom for the rear seat passengers is insufficient.

[0005] Furthermore, even if the rear seat backrest is folded forward to expand the luggage compartment floor to the area where the rear seats are arranged in the cabin floor to form a flat and enlarged luggage compartment floor, as described above, it is difficult to form a flat and enlarged luggage compartment floor due to the large volume of the driving battery box mounted above the floor.

[0006] [Prior art literature] [Patent Literature] [Patent Document 1] Japanese Patent Publication No. 2005-71759; [Patent Document 2] Japanese Patent Application Publication No. 2009-29159.

[0007] [Technical problem to be solved by the invention] In view of the above technical problems, the present invention aims to provide a cockpit structure for a structure in which a driving battery box is mounted above a floor, wherein the cockpit structure can ensure the height of the luggage compartment and the height of the rear seat configuration area in the cockpit without compromising the battery capacity, and can expand the flat luggage compartment floor area when the rear seat backrest is folded forward.

[0008] The purpose is also to ensure that even if the battery box is extended and enlarged forward, the original function of the center console will not be affected.

[0009] The purpose is also to make the sturdy box that houses the battery help improve the rigidity of the vehicle body. Summary of the invention

[0010] The present invention is a cockpit structure. The cabin structure comprises: a floor constituting a cabin bottom surface, front seats separated from each other on the front part of the floor and a front seat center console between the left and right front seats, a rear seat separated from each other on the rear part of a curved part of the floor and having a seat back that can be tilted forward and a rear seat center console between the left and right rear seats, the cabin structure is characterized in that: a first driving battery is arranged on a luggage compartment portion of the floor behind the rear seat back and extends in the vehicle width direction, and a second driving battery is arranged on a floor plate between the left and right rear seats and extends in the front-rear direction, the first and second driving batteries are T-shaped in a plan view, the left and right ends of the first driving battery are fixed to the luggage compartment portion of the floor, the front end of the second driving battery is fixed to the floor at a position that passes over the upper curved part and enters the front seat center console, and when the rear seat back is tilted forward, the upper surface portion of the seat back and the upper surface portions of the first and second driving batteries form an enlarged luggage compartment surface that is substantially on the same plane. This technical solution can increase the capacity of the driving battery while keeping the floor height in the luggage compartment low when the left and right rear seat backrests are folded forward, and can also increase the area of ​​the flat luggage compartment floor.

[0011] In one aspect of the present invention, Between the left and right rear seat backs, there is a middle backrest that can be tilted forward toward the upper surface of the rear center console. The front-to-back thickness of the middle backrest in the standing state is set to be smaller than the front-to-back thickness of the left and right rear seat backs. When tilted forward, the upper surfaces of the left and right rear seat backs and the middle seat back are on the same plane in the vehicle width direction. This technical solution makes the upper surfaces of the left and right rear seat backs and the middle seat back in the tilted forward state on the same plane in the vehicle width direction, thereby improving the flatness of the luggage compartment.

[0012] In the embodiment of the present invention, a seat back support portion for receiving the middle seat back that is tilted forward and a raised portion in front of the seat back support portion are provided on the upper portion of the rear seat console, and a functional panel having input and output functions for rear seat passengers is provided at a portion of the raised portion facing the rear seat passengers, and the functional panel is designed to be covered by the middle seat back that is tilted forward. This technical solution protects the functional surface of the console from the influence of cargo by the front portion of the seat back that is tilted forward.

[0013] In the embodiment of the present invention, the rear part of the front seat center console and the front end of the second driving battery are fixed to the center of the floor in the vehicle width direction through a common mounting member. This technical solution makes the mounting parts of the rear part of the console and the front part of the battery compact, which can reduce the loss of the mounting parts to the capacity of both.

[0014] In the embodiment of the present invention, the front seat center console has an article storage portion opening upward and a rear seat air conditioning outlet disposed behind the article storage portion, the front end of the second driving battery is close to the rear end of the article storage portion, and the rear seat air conditioning outlet is disposed above the front end of the second driving battery. This technical solution enables the rear seat outlet to be disposed at an appropriate height relative to the rear seat passengers, and enables the driving battery to be extended to the rear end of the article storage portion without being obstructed by the air conditioning outlet, thereby increasing the battery capacity.

[0015] In the embodiment of the present invention, a duct is provided inside the front seat center console to guide the exhaust air of the air conditioning unit in the front part of the cabin to the rear seat air outlet, the article storage part is a bottomed cylindrical shape including a bottom part and left and right side walls, and the duct is inserted from below the article storage part into the space between the side part of the front seat center console part and the side wall of the article storage part to reach the rear seat air outlet. This technical solution can make the driving battery close to the rear end of the article storage part without being hindered by the duct, so that the battery capacity can be increased.

[0016] In the form of the present invention, an aluminum battery housing is provided, which is formed integrally with a rear housing portion for accommodating a first driving battery and a front housing portion for accommodating a second driving battery, and is roughly T-shaped in a top view, the rear battery housing portion is fixed to a high-rigidity portion of a vehicle body that is located behind a rear seat and a pair of left and right vehicles, and the front battery housing portion is fixed to a high-rigidity portion of the vehicle body that is located in front of the vehicle seat back. This technical solution enables the battery housing to function as a frame member that strengthens the vehicle body, thereby improving the bending rigidity and torsional rigidity of the vehicle body.

[0017] In the embodiment of the present invention, both ends of the rear portion of the battery housing in the vehicle width direction are fixed to the left and right rear side frames. In this technical solution, the rear portion of the battery housing is fixed to the existing high-rigidity portion, i.e., the rear side frame, so there is no need to set up a high-rigidity portion across the vehicle width direction in the luggage compartment. In addition, the rear side frame, which is susceptible to the input load from the rear wheel, can be connected in the vehicle width direction through the rear portion of the housing, so the body torsion caused by the input load from the rear wheel can be reduced.

[0018] In the form of the present invention, there is a shock absorber support portion that supports the upper end of the rear suspension shock absorber, and the two ends of the rear part of the battery housing in the vehicle width direction are fixed to the shock absorber support portion. In this technical solution, the rear part of the battery housing is fixed to the existing high-rigidity part, namely the shock absorber support portion, so it is not necessary to set up a high-rigidity part in the luggage compartment. In addition, the shock absorber support portion that is directly acted upon by the input load from the rear wheel can be connected in the vehicle width direction through the rear part of the housing, so the cabin structure can reduce the body torsion caused by the input load from the rear wheel.

[0019] In the embodiment of the present invention, the floor has a floor tunnel that protrudes upward and extends in the front-rear direction of the vehicle at the approximate center in the vehicle width direction, and the front end of the front portion of the battery housing is fixed to the closed cross-section formed by the reinforcing member of the floor tunnel and the tunnel portion. This technical solution enables the front and rear ends of the battery housing to be fixed to the vehicle body strength member separated in the front-rear direction of the entire vehicle body, thereby improving the vehicle body bending rigidity when viewed from the side. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is an oblique cross-sectional view of an important part of the vehicle of the present embodiment as viewed from the front, left, and top; Figure 2 To omit Figure 1 An oblique cross-sectional view showing the center console section for the front seat and the center console section for the rear seat by imaginary lines; Figure 3 For the general Figure 1 An oblique cross-sectional view of the rear seat with the armrests folded down; Figure 4 For the general Figure 1 An oblique cross-sectional view of the rear seat with the backrest and the middle backrest folded down; Figure 5 is a perspective view of an important part of the vehicle of the present embodiment as seen from the rear, left, and top; Figure 6 For along Figure 1 A-A line cross-sectional view; Figure 7 for Figure 6 Enlarged view of important parts; Figure 8 For folding down the rear seat backrest and the center backrest Figure 7 Enlarged view of important parts; Fig. 9 A perspective view for explaining the laying structure of the supply pipeline for the rear seat; Fig.10 For along Figure 6 The cross-sectional view of the line B-B; Fig.11 is an oblique cross-sectional view of a mounting member and its surroundings for mounting and supporting an article storage portion, as viewed from the rear; Fig.12 is an oblique cross-sectional view of a mounting member and its surroundings for mounting and supporting a second battery box as viewed from the front; Fig.13 For along Fig.11 The cross-sectional view of the C-C line; Fig.14 is an oblique view of the appearance of the cabin of the electric vehicle as seen from the rear of the vehicle; Fig.15A top view showing the appearance of the cabin of the electric vehicle from a top-down perspective; Fig.16 For along Fig.15 The cross-sectional view of A-A in FIG. Fig.17 For along Fig.15 The cross-sectional view of B-B in FIG. Fig.18 For along Fig.15 The cross-sectional view of C-C in FIG. Fig.19 For along Fig.15 The cross-sectional view of D-D in FIG. DETAILED DESCRIPTION

[0021] Embodiments of the present invention will be described in detail below based on the drawings.

[0022] In the figure, arrow F indicates the front of the vehicle V, arrow U indicates the top of the vehicle V, arrow Ri indicates the right side of the vehicle V, and arrow Le indicates the left side of the vehicle V. In addition, in the following description, "front", "rear", "right", "left", "up", and "down" indicate directions with respect to the vehicle V unless otherwise specified.

[0023] The vehicle V of the present embodiment is, for example, a plug-in hybrid electric vehicle (PHEV) among hybrid vehicles, which obtains driving force by combining an internal combustion engine and an electric motor and can charge a power storage device from a household commercial power supply.

[0024] (Basic structure) like Figure 1 to Figure 6 , especially Figure 1 , Figure 5 , Figure 6 As shown, the vehicle V of the present embodiment mainly includes a steel plate floor panel 1 forming the floor (bottom surface) of a cabin 2 , a pair of left and right front seats 27 , 28 , and a pair of left and right rear seats 30 , 31 .

[0025] In the floor panel 1, a front floor panel 11 supporting a pair of left and right front seats 27, 28, a vertical wall-like upper curved portion 12 rising upward from the rear end of the front floor panel 11, and a rear floor panel 13 extending rearward from the upper curved portion 12 are formed integrally or quasi-integrally.

[0026] The rear floor 13 includes a rear seat pad 131 (rear seat chassis) supporting seat cushions 30C and 31C of rear seats 30 and 31 described later and a luggage compartment floor 132 connected to the rear seat pad 131 and extending rearward to form the floor of the luggage compartment 2a, which are integrally formed or quasi-integrally formed.

[0027] A recessed portion 132a capable of accommodating a spare tire is provided at the rear side of the center portion in the vehicle width direction of the luggage compartment floor 132, and a rear panel 14a extending in the vehicle width direction is installed on the rear open side of the recessed portion 132a (see FIG. Figure 6 ). In addition, in the floor panel 1, the front floor panel 11, the upper curved portion 12 and the rear seat pad 131 form the floor of the cabin 2 except for the luggage compartment 2a (that is, the cabin floor in front of the luggage compartment 2a).

[0028] like Figure 6 As shown, a rear panel beam 14b extending in the vehicle width direction is joined and fixed to the rear surface of the rear panel 14a, and a rear panel closed section 14s extending in the vehicle width direction is formed between the rear panel beam 14b and the rear panel 14a to ensure the rigidity of the rear vehicle body.

[0029] In addition, if Figure 6 As shown, the vehicle V of the present embodiment has a hatchback structure, and is provided with a tailgate opening 15 opened rearward at the rear portion, and a tailgate 16 covering the tailgate opening 15 and capable of opening and closing.

[0030] The tailgate 16 includes a tailgate inner panel 17 , a tailgate outer panel 18 , and a rear window 19 . The tailgate inner panel 17 is covered from the cabin 2 side by a tailgate trim 171 serving as an interior member.

[0031] The vehicle V has a roof 20 made of a steel plate as a ceiling, and a roof trim 21 as an interior member covers the roof 20 from the inside of the cabin 2 .

[0032] Furthermore, the roof trim 21 , the tailgate trim 171 , the rear window 19 , and the like define the height dimension of the cabin 2 (including the luggage compartment 2 a ) excluding the front portion.

[0033] And if Figure 1 , Figure 5 , Figure 6 As shown, the front bottom plate 11 is provided on the lower plate 4 (front plate) (refer to Figure 6 ) and the longitudinal wall-shaped upper curved portion 12, and a passage portion 22 extending in the front-rear direction and protruding toward the inner side of the cabin 2.

[0034] The tunnel portion 22 is the center of the vehicle body rigidity, and the rear end portion thereof is joined to the upper curved portion 12. The upper curved portion 12 is formed in a vertical wall shape higher than the rear end portion of the tunnel portion 22.

[0035] The tunnel portion 22 of the front floor panel 11 has a plurality of cross members 23, 24 (body rigid members) separated in the front-rear direction and connected to both sides thereof from above. The cross members 23, 24 extend in the vehicle width direction and connect the left and right vertical wall portions of the tunnel portion 22 and the left and right side members 5 (specifically, the inner side members 5a) as body rigid members ( Figure 5Only the left side of the vehicle is shown in the figure) and Figure 1 , Figure 6 As shown, the cross members 23 , 24 form closed cross sections 23 s , 24 s extending in the vehicle width direction between the cross members 23 , 24 and the front floor panel 11 .

[0036] like Figure 1 , Figure 6 As shown, a plurality of rear cross members 25, 26 (body rigid members) separated in the front-rear direction are joined to the rear floor panel 13. The front rear cross member 25 (No. 3 cross member) is joined to the front end portion of the rear floor panel 13 (i.e., the front end portion of the rear seat pad 131) from below, and is joined to the upper curved portion 12 from the rear, and a closed section 25s extending in the vehicle width direction is formed between the front rear cross member 25 and the corner portion formed by the rear floor panel 13 and the upper curved portion 12.

[0037] The middle rear cross member 26 (No. 4 cross member) includes a middle rear cross member upper member 26a having a hat-shaped cross section facing the rear floor panel 13 on upper and lower sides and opening downward, and a middle rear cross member lower member 26b having a hat-shaped cross section facing the rear floor panel 13 on upper and lower sides and opening upward.

[0038] The middle rear cross member upper member 26a and the middle rear cross member lower member 26b are joined in such a manner that the rear end of the rear seat pad 131 is sandwiched between the front end flange portions and the front end of the luggage compartment floor 132 is sandwiched between the rear end flange portions, and a closed section 26s extending in the vehicle width direction is formed between them.

[0039] Of the above-mentioned left and right paired front seats 27, 28, the driver's seat 27 (in this example, the front seat 27 on the right side of the vehicle) includes: a seat cushion 27C forming a seat surface for the passenger, a seat back 27B extending upward from the rear end portion of the seat cushion 27C to form a backrest surface for the passenger, and a headrest 27H provided on the upper portion of the seat back 27B and supporting the head of the passenger.

[0040] Likewise, if Figure 1 , Figure 5 As shown, among the above-mentioned left and right paired front seats 27, 28, the front passenger seat 28 (the front seat 28 on the left side of the vehicle in this example) comprises: a seat cushion 28C forming a seat surface for an occupant, a seat back 28B extending upward from the rear end portion of the seat cushion 28C to form a backrest surface for the occupant, and a headrest 28H provided on the upper portion of the seat back 28B and supporting the head of the occupant.

[0041] In addition, if Figure 1 to Figure 6 As shown, a front seat center console 50 is provided between the driver's seat 27 and the passenger seat 28, that is, in the middle of the vehicle width direction, for separating the seat cushions 27C and 28C of the left and right front seats 27 and 28 in the vehicle width direction. Details of the front seat center console 50 will be described later.

[0042] And if Figure 1 , Figure 5 As shown, the left and right paired rear seats 30, 31 are provided behind the left and right paired front seats 27, 28 and are arranged above the rear seat cushion plate 131. The left and right paired rear seats 30, 31 include: seat cushions 30C, 31C forming a seat surface for a passenger, seat backs 30B, 31B extending upward from rear ends of the seat cushions 30C, 31C and forming a backrest surface for the passenger, and headrests 30H, 31H provided on the upper portions of the seat backs 30B, 31B and supporting the head of the passenger.

[0043] A rear seat center console portion 70 is provided between the left and right rear seats 30, 31, i.e., in the middle portion in the vehicle width direction, for separating the seat cushions 30C, 31C of the left and right rear seats 30, 31 in the vehicle width direction, and an intermediate backrest portion 32 is provided between the seat backs 30B, 31B of the left and right rear seats 30, 31, i.e., in the middle portion in the vehicle width direction.

[0044] The left and right rear seats 30, 31 are separated and partitioned in the vehicle width direction by the rear seat center console section 70 and the middle backrest section 32, thereby ensuring independence from each other. The details of the rear seat center console section 70 will be described later.

[0045] The middle backrest portion 32 includes a middle backrest main body portion 33 and a rear seat armrest 34. The rear seat armrest 34 can be provided with a Figure 6 The support point 36 (armrest support point) shown in the figure is centered on the middle backrest main body 33 and can rise and fall (can be bent forward or stood up).

[0046] Therefore, if Figure 1 As shown in FIG. 1 , the rear seat armrest 34 is normally erected to form the front surface of the upper portion of the middle backrest 32. Figure 4 , Figure 7 As shown, the rear seat armrest 34 becomes a horizontal armrest when it is folded forward (ie, tilted forward).

[0047] The seat backs 30B and 31B of the left and right rear seats 30 and 31 can be rotated by pivot points 37 (seat back rotation pivot points) independently provided at their lower portions (see Figure 6 ),picture Figure 4 Move forward as shown.

[0048] Similarly, the middle backrest portion 32 can be rotated via another fulcrum 38 (seat back rotation fulcrum) located below the above-mentioned fulcrum 36 (armrest rotation fulcrum) (see Figure 6 ),picture Figure 4 Move forward as shown.

[0049] The lower portion of the middle backrest portion 32 is pivotally supported via the above-mentioned fulcrum 38 by a bracket (not shown) erected from the rear seat cushion 131, but is not limited to this structure. It can also be designed to be pivotally supported by the left and right rear seats 30, 31 or the second driving battery box 44 described later, directly via the fulcrum 38 or indirectly by a bracket or the like.

[0050] Here, if Figure 7 As shown, the front-to-back thickness (L32) of the middle backrest portion 32 in the standing state is set to be smaller than the front-to-back thickness (L30B) of the seat backs 30B, 31B of the left and right rear seats 30, 31. The front-to-back thickness of the seat back 31B of the left rear seat 31 is set to be the same as the front-to-back thickness (L30B) of the seat back 30B of the right rear seat 31, which is not shown in the figure.

[0051] Therefore, if Figure 4 , Figure 8 As shown, in the vehicle V of the present embodiment, if the seat backs 30B, 31B are tilted forward toward the upper portions of the corresponding left and right paired seat cushions 30C, 31C, and the middle backrest portion 32 is tilted forward toward the upper portion of the corresponding rear seat center console portion 70, the upper surface portions 30Bu, 31Bu of the left and right paired seat backs 30B, 31B and the upper surface portion 32u of the middle backrest portion 32 are substantially in the same plane.

[0052] (Basic Structure of the First and Second Driving Batteries 41 and 42) like Figure 1 , Figure 2 , Figure 7 As shown, the vehicle V of this embodiment is a plug-in hybrid electric vehicle (PHEV), and therefore is equipped with driving batteries 41 and 42. The vehicle V of this embodiment is equipped with a first driving battery 41 and a second driving battery 42 as the driving batteries 41 and 42, which are both arranged above the floor panel 1.

[0053] The first and second driving batteries 41 and 42 each include one or more battery packs (not shown). The battery packs of this embodiment are housed in battery cases 43 and 44. The internal structure of the battery cases 43 and 44 is that a plurality of batteries (cells) are connected in series.

[0054] The batteries constituting the battery pack may be lead-acid batteries, lithium-ion batteries, nickel-metal hydride batteries, or other secondary batteries. Furthermore, the batteries mounted in the vehicle V may not only be secondary batteries but also fuel cells or the like.

[0055] The battery cases 43 and 44 of the first and second driving batteries 41 and 42 are formed by aluminum die casting to ensure a predetermined rigidity. Figure 5As shown, the upper surface portions 43u and 44u are both horizontal planes.

[0056] (First driving battery 41) like Figure 1 , Figure 5 , Figure 7 As shown, the first driving battery 41 is disposed in a space below the luggage room 2 a behind the left and right rear seats 30 , 31 .

[0057] The battery box 43 of the first driving battery 41 (hereinafter referred to as "the first driving battery box 43") extends linearly in the vehicle width direction and is arranged from above in the front part of the luggage compartment floor 132 forming the floor of the luggage compartment 2a across substantially the entire length in the vehicle width direction. The first driving battery box 43 is formed such that the center part in the vehicle width direction of the rear part thereof bulges downward relative to the front part, and the lower bulging part of the rear part is accommodated in the front part of the recessed part 132a in the luggage compartment floor 132 for accommodating the spare tire.

[0058] In addition, if Figure 5 As shown, the first driving battery box 43 is appropriately mounted to the rear side frames 3 as vehicle body rigid members on both sides of the intermediate rear cross member 26 or the luggage compartment floor 132 by bolts and nuts as fastening members via brackets 45 or the like.

[0059] like Figure 4 , Figure 8 As shown, the front end portion 43f of the first driving battery box 43 is arranged to approach the rear end portions 30Br, 31Br of the seat backs 30B, 31B in the forward-folded state of the rear seats 30, 31 from the rear, and is arranged with almost no gap in the front-to-rear direction relative to the seat backs 30B, 31B in the forward-folded state.

[0060] And, if Figure 4 As shown, the first driving battery box 43 is arranged so that its upper surface portion 43u is flush with the upper surface portions 30Bu, 31Bu, 32u of the seat backs 30B, 31B and the middle backrest portion 32 of the forwardly tilted left and right rear seats 30, 31 in the front-rear direction.

[0061] On the other hand, Figure 1 , Figure 4 , Figure 6 As shown in the figure, a luggage compartment partition plate 40 for partitioning the rear part of the luggage compartment 2a up and down is horizontally provided above the luggage compartment floor plate 132 and behind the rear end of the first driving battery box 43, and the luggage compartment partition plate 40 can be attached and detached. The arrangement height of the luggage compartment partition plate 40 is set so that its upper surface 40u and the upper surface 43u of the first driving battery box 43 are substantially at the same height.

[0062] Therefore, when the luggage compartment partition plate 40 is disposed above and behind the luggage compartment floor plate 132, a substantial luggage compartment floor 2F is formed by the first driving battery box 43 and the flat upper surfaces 43u, 40u of the luggage compartment partition plate 40 (see FIG. Figure 6 , Figure 7 ), the luggage compartment floor 2F is different from the luggage compartment floor formed by the upper surface portion of the luggage compartment floor 132.

[0063] And, if Figure 4 , Figure 8 As shown, if the seat backs 30B, 31B and the middle backrest 32 of the left and right rear seats 30, 31 are tilted forward, the upper surface portions 30Bu, 31Bu, 32u (i.e., the back side at normal times) of the above-mentioned components 30B, 31B, 32 are roughly on the same plane as the upper surface portions 43u, 40u of the first driving battery box 43 and the luggage compartment partition plate 40.

[0064] That is, the substantial luggage compartment floor 2F formed by the upper surface portions 43u, 40u is expanded to the space around the rear seats 30, 31 through the upper surface portions 30Bu, 31Bu, 32u. Figure 4 , Figure 8 As shown, a flat and enlarged luggage compartment floor 2Fa is formed that enables large-capacity loading.

[0065] The seat backs 30B, 31B and the middle backrest 32 of the left and right rear seats 30, 31 can be independently tilted forward, so any one of the seat backs 30B, 31B, 32 can be prevented from tilting forward, which is not shown in the figure. In this way, it is possible for a passenger to sit on a rear seat 30, 31 whose seat back 30B, 31B is not tilted forward, and at the same time, the space of the luggage compartment 2a is expanded. In addition, the luggage compartment partition plate 40 is not necessary, and the luggage compartment partition plate 40 may not be provided. It can also be designed as follows: the luggage compartment partition plate 40 is provided on the upper surface portion 43u of the first driving battery box 43 from above and extends forward, and the forward extension portion of the luggage compartment partition plate 40 forms the substantial upper surface portion (43u) of the first driving battery box 43.

[0066] (Second driving battery 42) like Figure 2 , Figure 5 , Figure 7 As shown, the second driving battery 42 is disposed between the seat cushions 30C and 31C of the left and right rear seats 30 and 31 in the vehicle width direction.

[0067] Specifically, the second driving battery 42 is disposed above the rear seat pad 131, but is not disposed below the seat cushions 30C, 31C of the left and right rear seats 30, 31, but is disposed in a straight line along the front-to-back direction only between the seat cushions 30C, 31C of the left and right rear seats 30, 31 in the vehicle width direction of the rear seat pad 131.

[0068] The battery box 44 of the second driving battery 42 (hereinafter referred to as the "second driving battery box 44") is fixed to the upper surface of the rear seat cushion 131 by a fastening member including bolts and nuts (not shown). Figure 7 As shown, the second driving battery case 44 is arranged such that its rear end portion 44r is close to the front end portion 43f of the middle portion in the vehicle width direction of the first driving battery case 43 and extends linearly forward.

[0069] As a result, the first and second driving battery cases 43 and 44 are configured as a whole to have a substantially T-shape in a plan view.

[0070] And, if Figure 2 , Figure 5 , Figure 7 As shown, the second driving battery box 44 is configured such that its front portion extends horizontally forward along the channel portion 22 relative to the upper curved portion 12, and its upper surface portion 22u (refer to Figure 2 ) separate upwards.

[0071] Although the illustration is omitted, in the present embodiment, the structure of the battery pack inside the second driving battery box 44 is such that a plurality of batteries are arranged in series in the front-to-back direction corresponding to the second driving battery box 44 extending in the front-to-back direction. Therefore, by extending the second driving battery box 44 forward relative to the upper curved portion 12, the battery capacity of the second driving battery 42 is ensured.

[0072] like Figure 1 , Figure 2 , Figure 5 , Figure 7 , Figure 8 , especially Figure 8 As shown, the second driving battery box 44 extends forward from the rear end 50r of the front seat center console 50, and the front end 44F thereof is embedded in the front seat center console 50 from the rear. The front end 44F of the second driving battery box 44 is inserted into the interior of the front seat center console 50 via a mounting member 67 ( Figure 7 ) is supported by the channel portion 22.

[0073] Thus, the front portion of the second driving battery box 44 (ie, the portion protruding forward from the upper curved portion 12 ) is horizontally bridged (straddled) between the mounting member 67 and the rear seat pad 131 .

[0074] (Center console section 50 for front seats) like Figure 1 , Figure 5 As shown, the front seat center console 50 is erected on the upper surface 22u of the tunnel 22, and its front end is adjacent to the instrument panel 7 (see FIG. Figure 6 ) is connected to the lower part of the center part in the vehicle width direction.

[0075] like Figure 1 , Figure 5 , Figure 6 , Figure 7 As shown, the front seat center console 50 mainly includes a cover member 51 as an interior decoration member in a hollow box shape, a shift lever 52, an article storage portion 53, a cover 57, and a mounting member 67 for supporting the article storage portion 53 (see Figure 7 )、The rear seat supply pipe 62 (refer to Figure 6 , Figure 7 ).

[0076] like Figure 1 , Figure 5 As shown, the cover member 51 includes a pair of left and right side portions 511 (see FIG. 1 ) which face each other in the vehicle width direction and constitute the side surfaces of the front seat center console portion 50. Fig.10 ), a top surface portion 512 disposed between the left and right side surfaces 511 and constituting the front portion of the upper surface portion of the front seat center console portion 50, and a rear surface portion 513 disposed above the rear end portion 50r of the front seat center console portion 50 (see Figure 5 ), all of which are decorative laminates.

[0077] The shift lever 52 is a handle for receiving an operation by a passenger to shift the gears of a transmission (not shown) of the vehicle V. The shift lever 52 is disposed at a location on the front side of the top surface portion 512 and on the center side in the vehicle width direction.

[0078] like Figure 7 As shown, the article storage portion 53 is located at the rear of the front seat center console portion 50. The article storage portion 53 is in the shape of a bottomed square tube, and has a bottom wall 531 and a pair of left and right side walls 532 rising from both side edges of the bottom wall 531 (see FIG. Fig.10 ), a front wall 533 rising from the front edge of the bottom wall 531, and a rear wall 534 rising from the rear edge of the bottom wall 531, and the article storage portion 53 is provided with an opening portion 56 opening upward. The opening portion 56 of the article storage portion 53 is provided behind the top surface portion 512 of the front seat center console portion 50.

[0079] The article storage section 53 of the present embodiment has a depth sufficient to accommodate a tablet computer in the vertical direction.

[0080] The cover 57 is located on the upper portion of the article storage portion 53 and can close the opening 56 .

[0081] The cover 57 includes a pair of left and right split covers 571, 571 that can open and close the opening 56 above the article storage section 53. Fig.10 As shown, in the rear upper surface of the front seat center console 50, the left and right side portions 156 of the opening 56 are provided with a rotation connection portion 58, which rotatably connects the left and right divided covers 571, 571 to the side portions 156 via a shaft 58a extending in the front-rear direction.

[0082] Thus, the left and right paired divided covers 571, 571 are of a split type (double door type) in which the opening portion 56 is opened from the center.

[0083] The cover 57 has the strength and cushioning properties to be used as an armrest when the opening 56 is closed.

[0084] Furthermore, the upper surface of the cover 57 of the article storage portion 53 is configured to be located above the top surface portion 512, and its size and height are set to be able to accommodate the forearm (elbow to wrist) of the front seat passenger (passenger sitting in the front seats 27, 28).

[0085] The front seat center console portion 50 of the present embodiment includes not only a shift lever 52, but also an operating portion for accepting operations related to various settings of the vehicle V, such as operations of a navigation system, and a support bracket for supporting a shift operating mechanism such as the shift lever 52. The operating portion and the support bracket are omitted in the figure.

[0086] like Figure 5 As shown, the front seat center console 50 is a console with rear vents for rear seat passengers, and rear seat vents 60 for rear seat passengers (passengers sitting in the rear seats 30 , 31 ) are formed in the rear surface 513 of the cover member 51 .

[0087] like Figure 7 As shown, the rear surface portion 513 is arranged behind the article storage portion 53 and is arranged at approximately the same height as the top surface portion 512. It is in the shape of an inclined surface inclined downward and rearward, so that the rear seat air outlet 60 provided in the central part of the rear surface portion 513 under the main viewing angle faces the head and chest of the rear seat passenger.

[0088] The rear seat air outlet 60 includes heat dissipation holes that allow a rear seat passenger to manually open and close the rear seat air outlet 60 or change the air direction.

[0089] Here, if Figure 6As shown, an air conditioning unit 100 (air conditioner) and a front seat supply duct 101 for supplying temperature-conditioned air (cooling and heating) from the air conditioning unit 100 to front seat air outlets (not shown) provided on the instrument panel are provided inside the instrument panel 7 on the front side of the cabin 2 .

[0090] The rear seat supply duct 62 is connected to the upstream side of the front seat supply duct 101 , and part of the temperature-conditioned air flowing from the air conditioning unit 100 to the front seat air outlet (not shown) via the front seat supply duct 101 is branched into the rear seat supply duct 62 .

[0091] The rear seat supply duct 62 is arranged (extended) to penetrate the interior of the front seat center console section 50 in the front-rear direction, and its rear end portion (66b) is connected to the rear seat air outlet 60 provided on the rear surface portion 513 of the front seat center console section 50. A rear blower 102 is arranged near the portion of the rear seat supply duct 62 connected to the front seat supply duct 101, that is, at the upstream side of the airflow.

[0092] When the air conditioning unit 100 is in operation, part of the temperature-conditioned air is blown out from the front seat air outlet (not shown), and the remaining part is sent to the rear seat supply duct 62 side and is pressed by the rear blower 102 through the rear seat supply duct 62 to the rear seat air outlet 60 side.

[0093] Next, the laying path of the rear seat supply duct 62 will be described in detail.

[0094] like Figure 6 , Figure 7 , Fig. 9 As shown, the rear seat supply duct 62 includes a rear laying portion 63, a vehicle width outer laying portion 64, an upper laying portion 65, and an upper rear laying portion 66 in order from the upstream side to the downstream side in the wind flow direction. Except for the rear laying portion 63, all the laying portions 63, 64, 65, and 66 are arranged in pairs on the left and right.

[0095] The rearwardly laid portion 63 is laid rearwardly along the upper surface portion 22u of the tunnel portion 22 from the connection portion with the front seat supply duct 101. Figure 7 , Fig. 9 As shown, the rear portion of the rear laying portion 63 is laid backward from the front of the front wall 533 of the article storage portion 53 to the bottom of the bottom wall 531 of the article storage portion, that is, between the bottom wall 531 and the upper surface portion 22u of the channel portion 22.

[0096] like Figure 7 , Fig. 9As shown, the rear portion of the rear laying portion 63 that is inserted into the bottom wall 531 of the article storage portion 53 is arranged substantially horizontally in the middle portion of the article storage portion in the vehicle width direction to the rear until the rear wall 534 of the article storage portion 53 (see Figure 7 That is, the rear end portion 63a of the rear laying portion 63 is located directly below the bottom wall 531 of the article storage portion 53.

[0097] like Fig. 9 , Fig.10 As shown, the left and right paired vehicle width outer laying parts 64 extend substantially horizontally from the rear end 63a of the rear laying part 63 to the left and right outer sides in the direction consistent with the vehicle width direction, and the vehicle width direction inner ends thereof are both connected to the rear end 63a of the rear laying part 63. Thus, the rear seat supply duct 62 branches to the left and right sides just below the bottom wall 531 of the article storage part 53.

[0098] That is, the paired left and right vehicle width outer laying portions 64 are laid outward in the vehicle width direction opposite to each other from the rear end portion 63a of the rear laying portion 63. In addition, the vehicle width outer end portions 64b of the left and right vehicle width outer laying portions 64 are located in the space S between the side surface portion 511 of the front seat center console portion 50 and the side wall 532 of the article storage portion 53 on the left and right sides of the article storage portion 53.

[0099] In the space S between the side surface 511 of the front seat center console 50 and the side wall 532 of the article storage section 53, which is located on the left and right outer sides relative to the article storage section 53, the upper laying portion 65 is laid vertically upward along the side wall 532 of the article storage section 53. The lower end portion 65a of the upper laying portion 65 is connected to the vehicle width outer end portions 64b of the left and right vehicle width outer laying portions 64, as shown in FIG. Figure 7 , Fig. 9 As shown, the upper laying portion 65 is laid upward until it reaches a height corresponding to the rear seat air outlet 60 .

[0100] Here, if Fig.10 As shown, at the rear of the front seat center console 50, there is a space S between the side surface 511 of the front seat center console 50 and the side wall 532 of the article storage portion 53 as a dead space just below the left and right side edges 156 of the opening 56 of the article storage portion 53 that opens upward.

[0101] In the present embodiment, the rotatable connection portion 58 for rotatably connecting the split cover 571 so that the split cover 571 can be opened and closed as described above is provided on the left and right side portions 156 of the opening portion 56 of the front seat center console portion 50. Therefore, compared with a solution in which the rotatable connection portion 58 is not provided on the left and right side portions 156 of the opening portion 56, the space S between the side portion 511 of the front seat center console portion 50 and the side wall 532 of the article storage portion 53 located directly below the left and right side portions 156 is wider.

[0102] In the present embodiment, as described above, the upper laying portion 65 is disposed over the entire length of the space S between the side portion 511 of the front seat center console portion 50 and the side wall 532 of the article storage portion 53 in the vertical direction, thereby effectively utilizing the space S, that is, the wide ineffective space (wasted space) (see Fig.10 ).

[0103] In addition, the upper laying portion 65 is not limited to being laid vertically upward as in this example (see Figure 7 , Fig. 9 ), or it may be laid obliquely along the side wall 532 of the article storage portion 53 as it moves upward and backward in the side view of the vehicle V (this solution is omitted in the figure), but in either case, the upper end portion 65b (refer to Fig. 9 ) is located in front of the rear wall 534 of the article storage section 53 over the entire length in the up-down direction.

[0104] Therefore, if Figure 7 As shown, the upper laying portion 65 is laid in front of the front end portion 44F of the second driving battery box 44, which is located behind the rear wall 534 of the article storage portion 53. Therefore, the upper laying portion 65 is not arranged on both sides of the front end portion 44F of the second driving battery 42, so the length of the second driving battery 42 in the vehicle width direction is not restricted by the upper laying portions 65 in pair on the left and right, and the battery capacity can be ensured.

[0105] At a height equivalent to the rear seat air outlet 60, in other words, above the upper surface 44u of the front end 44F of the second driving battery box 44, the upper rear laying parts 66 are laid in a left and right pair in the front and rear direction. Fig. 9 As shown, the front end portion 66 a of the upper rear laying portion 66 is communicated with the upper end portion 65 b of the upper laying portion 65 .

[0106] The upper rear laying portion 66 is laid substantially horizontally from the upper end portion 65 b of the upper laying portion 65 to the rear seat air outlet 60 located behind the rear wall 534 of the article storage portion 53 , and its rear end portion 66 b is connected to the rear seat air outlet 60 .

[0107] The rear portions of the left and right upper rear laying portions 66 are laid inward in the vehicle width direction relative to the rear wall 534 of the article storage portion 53 and in front of the rear seat air outlet 60. The rear portions may be designed so that the respective rear end portions 66b (inner end portions in the vehicle width direction) are connected to the rear seat air outlet 60 separately from each other, or may be designed so that the rear seat air outlet 60 is connected to the rear seat air outlet 60 in a state where the left and right sides intersect with each other.

[0108] Here, if Figure 7 As shown, as described above, the second driving battery box 44 extends forward relative to the rear end portion 50r of the front seat center console portion 50, that is, extends forward in a manner that the front end portion 44F thereof is embedded in the interior of the front seat center console portion 50, and the plate-shaped rear surface portion 513 provided with the rear seat air outlet 60 is arranged above the upper surface portion 44u of the front end portion 44F of the second driving battery box 44. In addition, the rear end portion (66b) of the rear seat supply duct 62 connected to the rear seat air outlet 60, that is, the rear end portion 66b of the upper rear laying portion 66 is supported by the front end portion 44F of the second driving battery box 44 from directly below (not shown).

[0109] Specifically, the rear end portion 66 b of the upper rear laying portion 66 connected to the rear seat air outlet 60 is attached and fixed to the upper surface portion 44 u of the front end portion 44F of the second driving battery case 44 via a bracket or the like (not shown).

[0110] (Attachment Member 67 of Article Accommodation Section 53 and Second Driving Battery Box 44) like Figure 7 , Fig.11 , Fig.13 As shown, the mounting member 67 for supporting the article storage portion 53 is provided on the bottom wall 531 of the article storage portion 53 in the interior of the front seat center console portion 50 (see Fig.13 ) and the upper surface portion 22u of the tunnel portion 22. That is, the article storage portion 53 is supported by the upper surface portion 22u of the tunnel portion 22 via the mounting member 67.

[0111] On the other hand, Figure 7 , Figure 11 to Figure 13 As shown, the front end portion 44F of the second driving battery box 44 extends forward until it is located near the rear wall 534 of the article storage section 53. In addition, the mounting member 67 supporting the article storage section 53 also serves as a mounting member supporting the front end portion 44F of the second driving battery box 44.

[0112] That is, the article storage portion 53 of the front seat center console portion 50 and the front end portion 44F of the second driving battery box 44 are mounted to the upper surface portion 22 u of the tunnel portion 22 via a common mounting member 67 .

[0113] Specifically, if Figure 11 to Figure 13 As shown, the mounting member 67 is a steel plate member integrally formed by the following parts into a substantially hat-shaped cross-section: a support portion 671 extending in the vehicle width direction along the upper surface portion 22u of the tunnel portion 22 and capable of setting the rear portion of the bottom wall 531 of the article storage portion 53 and the front end portion 44F of the second drive battery box 44, left and right legs 672 extending downward from the left and right ends of the support portion 671 in the vehicle width direction, and left and right flange portions 673 extending from the outer ends of the legs 672 in the vehicle width direction to the outer sides in the vehicle width direction and capable of being set on both sides of the upper surface portion 22u of the tunnel portion 22.

[0114] For example Fig.13 As shown, bolt insertion holes 671 a are formed vertically through both sides of the support portion 671 of the mounting member 67 , and bolt insertion holes 673 a are formed vertically through the left and right flange portions 673 .

[0115] like Figure 11 to Figure 13 As shown, the front end portion 44F of the second driving battery box 44 is provided with a flange portion 144 extending forward from the left and right sides of the lower end portion, as shown in FIG. Fig.13 As shown, each of the top ends (front end portions) of the left and right paired flange portions 144 has a bolt insertion hole 144 a formed therethrough in the up-down direction.

[0116] like Figure 11 to Figure 13 As shown, a box body support bracket 68 is provided below the article storage section 53 and above the mounting member 67. The box body support bracket 68 includes: a bottom wall reinforcement portion 681 (see FIG. 1 ) that supports at least the rear portion of the bottom wall 531 of the article storage section 53 in the front-rear direction and is joined to the lower surface of the bottom wall 531 in a manner that can reinforce the bottom wall 531. Fig.11 , Fig.13 ); a pair of left and right supporting legs 682 extending downward from the left and right sides of the bottom wall reinforcement portion 681; and left and right flange portions 683 extending outward in the vehicle width direction from the lower end of the supporting legs 682. Fig.13 As shown, bolt insertion holes 683 a are formed through the top ends of the left and right paired flanges 683 of the box support bracket 68 in the up-down direction.

[0117] The flange portion 673 of the mounting member 67 and the upper surface portion 22u of the channel portion 22 facing the flange portion 673 have bolt insertion holes 673a, 22a (see Fig.13 ) are arranged in a state of being connected in the up-down direction. In addition, the flange portion 673 and the upper surface portion 22u facing the flange portion 673 are fastened and fixed on the left and right sides using bolts B1 inserted into the bolt insertion holes 673a, 22a and nuts N1.

[0118] Furthermore, the flange portion 144 provided on the front end portion 44F of the second driving battery box 44 and the flange portion 683 provided on the box body supporting bracket 68 are arranged in this order from above in a state where they are connected in the up-down direction, and the bolt insertion holes 144a, 683a, and 671a are respectively formed on the left and right sides of the supporting portion 671 of the mounting member 67.

[0119] The flange portions 144 , 683 are screwed together on both left and right sides of the support portion 671 of the mounting member 67 using bolts B2 and nuts N2 that communicate with the bolt insertion holes 144 a , 683 a , 671 a .

[0120] The mounting member 67 is provided just below the article storage portion 53 , but the present invention is not limited thereto and may be provided just below the front end portion 44F of the second driving battery case 44 .

[0121] In either case, compared with when the mounting member 67 is disposed between the rear wall 534 of the article storage portion 53 and the front surface of the front end portion 44F of the second drive battery box 44, the front end portion 44F of the second drive battery box 44 can be extended from the rear to the front to be closer to the rear wall 534 of the article storage portion 53, thereby ensuring the battery capacity of the second drive battery 42.

[0122] (Rear seat center console section 70) like Figure 1 , Figure 5 , Figure 6 As shown, in the above-mentioned rear seat center console portion 70, a cover member 71 as an interior decorative member which is erected from the rear seat cushion plate 131 and is mainly made of resin includes a top surface portion 711 constituting an upper surface portion, and a pair of left and right side portions 712 (only the left side is shown) extending downward from the left and right ends of the upper end, all of which are decorative laminates.

[0123] The second driving battery box 44 is accommodated in the interior of the rear seat center console portion 70 defined by the top surface portion 711 and the left and right side surface portions 712 .

[0124] That is, the second driving battery box 44 is disposed inside the rear seat center console section 70 over substantially the entire length in the front-rear direction, and functions as a frame member of the rear seat center console section 70 to reinforce the rear seat center console section 70 .

[0125] Therefore, the top surface 711 and the left and right side surfaces 712 of the rear seat center console 70 can be supported by the rear seat pad 131 via a bracket (not shown) provided inside the rear seat center console 70, or can be appropriately mounted and fixed to the second driving battery box 44 (not shown in this embodiment). Specifically, the top surface 711 of the rear seat center console 70 disposed directly above the second driving battery box 44 can be supported by the second driving battery box 44.

[0126] In addition, if Figure 1 , Figure 5 , Figure 6 As shown, in the middle portion of the cabin 2 in the vehicle width direction, a rear seat center console portion 70 is provided continuously with the front seat center console portion 50 in the front-rear direction.

[0127] In detail, Figure 5 , Figure 6 As shown, the front end of the top surface 711 of the rear seat center console section 70 and the lower end of the rear surface 513 of the front seat center console section 50 provided with the rear seat air outlet 60 are connected by mutual engagement or the like. Similarly, the front end of the right side surface (omitted from the illustration) of the rear seat center console section 70 and the right side surface 511 (see FIG. 1 ) of the front seat center console section 50 are connected by mutual engagement or the like. Fig.10 ) is connected to the rear end portion of the rear seat center console portion 70 (not shown), and the front end portion of the left side portion 712 of the rear seat center console portion 70 is connected to the rear end portion of the left side portion 511 of the front seat center console portion 50.

[0128] The left and right side surfaces 511 of the front seat center console section 50 and the left and right side surfaces 712 of the rear seat center console section 70 are connected at their boundaries so as to be located substantially on the same plane in the front-rear direction.

[0129] In other words, the rear center console portion 70 includes a rear center console rear portion 72 disposed above the rear seat pad 131 and a rear center console front portion 73 extending forward from the upper curved portion 12 in the front-rear direction.

[0130] In addition, the rear seat center console front portion 73 is provided with an upper portion 74 in which the second driving battery box 44 is arranged like the rear seat center console rear portion 72, and a lower portion 75 is located directly below the upper portion 74 and the second driving battery box 44 and does not arrange the second driving battery box 44 inside.

[0131] The top surface portion 711 and left and right side surfaces 712 (only the left side is shown) of the rear center console portion 70 are formed across the rear center console rear portion 72 and the rear center console front portion 73 (the upper portion 74 and the lower portion 75 ).

[0132] The lower member 75 in which the second driving battery box 44 is not disposed is provided with an opening 76 (through hole) penetrating in the vehicle width direction.

[0133] Through the opening 76, this appearance design can ensure ventilation in the vehicle width direction of the space under the feet of the left and right rear seat passengers and allow the rear seat passengers to have a sense of spaciousness.

[0134] That is, by providing the opening 76 in the lower part 75 at a height equivalent to the feet of the rear seat passengers, the comfort can be improved while maintaining the independence of the rear seats 30, 31 obtained by separating the left and right rear seats 30, 31 by the rear seat center console 70, so that the rear seat passengers will not feel oppressive.

[0135] The inner surfaces of the cylindrical opening portion 76 extending in the vehicle width direction in the lower part 75, i.e., its upper inner surface, lower inner surface, front inner surface and rear inner surface, are also provided with decorative laminate panels (not shown), thereby ensuring the appearance design of the inner surface of the opening portion 76.

[0136] The size, location, number, etc. of the opening 76 are not limited to the present embodiment. For example, in the present embodiment, the opening 76 is provided at the center in the front view of the lower member 75 (i.e., the side view of the vehicle V), but the opening 76 may not be provided at least in a portion of the peripheral edge such as the front edge, the rear edge, or the lower edge, and may be formed in the entire lower member 75, or may be provided with a plurality of openings in the lower member 75. Furthermore, the upper member 74 and the lower member 75 may be separated in the vertical direction, and the opening 76 may be provided between them.

[0137] In addition, the thickness of the lower part 75 in the vehicle width direction is not limited to the thickness corresponding to the second drive battery box 44. The left and right side surfaces 712 (only the left side is shown in the figure) forming the lower part 75 can also be configured so that the spacing in the vehicle width direction of the left and right side surfaces 712 is narrower than the length of the second drive battery box 44 in the vehicle width direction.

[0138] (Top surface portion 711 of rear seat center console portion 70) like Figure 1 , Figure 5 , Figure 7 As shown, the top surface 711 of the rear seat center console 70 is provided with a shallow tray 77 on which articles such as a mobile terminal can be placed, and a raised portion 80 raised upward in front of the tray 77 .

[0139] like Figure 5 As shown, the tray 77 is provided with a bottom portion 78 horizontal in the vehicle width direction, and left and right longitudinal wall portions 79 rising from the left and right edges of the bottom portion 78 and extending continuously at the same height along the side edges in the front-rear direction, and the cross section of the tray 77 is concave and opens upward.

[0140] like Figure 8 As shown, the tray 77 serves as a middle backrest loading portion capable of loading the middle backrest portion 32 that is tilted forward, extends in the front-to-back direction by a length equivalent to the front-to-back direction of the middle backrest portion 32 that is tilted forward, and has a vehicle width direction length that is substantially the same as the vehicle width direction length of the middle backrest portion 32.

[0141] The raised portion 80 is raised upwards compared to the upper ends of the left and right vertical wall portions 79 of the tray 77. The upper surface portion of the raised portion 80 includes: a raised upper surface rear portion 81 extending forward from the front end of the tray 77 and tilted upwards as it moves forward; and a raised upper surface front portion 82 extending forward from the front end of the raised upper surface rear portion 81 and tilted gradually downwards as it moves forward.

[0142] Specifically, if Figure 5 As shown, the bottom portion 78 of the tray 77 is formed horizontally except for the front region, and the front region of the bottom portion 78 is inclined forward and upward from the front end of the rear horizontal portion until it reaches the height of the vertical wall portion 79. The rear portion 81 of the raised upper surface of the raised portion 80 is formed to be inclined forward and upward from the front end of the bottom portion 78 in a manner continuous with the front region of the bottom portion 78 of the tray 77, and faces the rear seat passengers in the side view of the vehicle V.

[0143] The rear portion 81 of the raised upper surface of the raised portion 80 is provided in an area that can be touched by the hands of the rear seat passengers, and as a functional panel surface, it has at least one of an input function for the rear seat passengers to input various information and an output function for outputting information to the rear seat passengers.

[0144] Specifically, the output function is a display (display unit) or a sound output unit such as a speaker. When the output function is a display, the rear seat passenger can see the entire image displayed on the display.

[0145] The display is a device that projects images by emitting light from the surface, and various displays can be used, such as liquid crystal displays, organic EL displays, etc. The display can also have a touch panel that passengers can touch to operate.

[0146] The input function is an operation input section or socket (connection terminal) for operating various in-vehicle electronic devices such as audio equipment and rear seat heaters.

[0147] The operation input unit includes buttons, dials, joysticks, etc., and the sockets include USB sockets, AC sockets, and DC sockets. There is no special limitation on the number and types of the above-mentioned operation input units and sockets.

[0148] like Figure 5As shown, in this embodiment, an operation input unit 83 for audio equipment, a rear seat heater, etc., two USB sockets 84, and an AC socket 85 are arranged on a raised upper surface rear portion 81 as a functional panel surface.

[0149] In addition, if Figure 8 As shown, the rear portion 81 of the raised upper surface of the raised portion 80 stands up along the shape of the vehicle V side view of the front portion of the forward-falling middle backrest portion 32 on the top portion 711 of the rear seat center console portion 70, and its height is approximately the same as the thickness in the up-down direction of the front portion of the forward-falling middle backrest portion 32.

[0150] The top surface portion 711 of the rear seat center console portion 70 of the present embodiment rises smoothly upward as it goes forward from the front region of the bottom surface portion 78 of the tray 77 to the raised upper surface rear portion 81 .

[0151] Therefore, if Figure 8 As shown, the front portion of the forward-falling middle backrest portion 32 faces the rear portion 81 of the raised upper surface of the raised portion 80 from the rear vicinity, and can protect the rear portion 81 of the raised upper surface from external factors such as external force.

[0152] As described above, when the middle backrest 32 is tilted forward, it is supported substantially horizontally by at least the tray 77 in the top surface 711 of the rear seat center console 70, and its upper surface 32u is flush with the upper surface 30Bu, 31Bu of the seat backs 30B, 31B of the left and right rear seats 30, 31 tilted forward in the vehicle width direction (see FIG. Figure 4 ), and the upper surface portion 43u of the first driving battery case 43 is flush with the front-rear direction (refer to Figure 4 , Figure 8 ).

[0153] Also like Figure 1 , Figure 5 , Figure 6 , Figure 8 As shown, the raised upper surface front portion 82 of the raised portion 80 is formed to be gradually inclined in the front-down direction from the front end of the raised upper surface rear portion 81 until its front end is located near the lower side of the rear seat air outlet 60, that is, until it is located at the lower edge of the rear surface portion 513. Thus, the wind blown out from the rear seat air outlet 60 can flow toward the rear seat passenger without being blocked by the raised portion 80.

[0154] And if Figure 4 , Figure 8 As shown, the raised upper surface front portion 82 of the raised portion 80 is provided to be substantially flush with the upper surface portion 32u of the forwardly tilted middle backrest portion 32 in the front-rear direction.

[0155] Thus, the raised upper surface front portion 82 of the raised portion 80 can also be formed as a part of the flat enlarged luggage compartment floor 2Fa described above.

[0156] The vehicle V of the present embodiment described above is as follows Figure 1 The cockpit structure shown in the figure has a cockpit structure, which has a bottom plate 1 forming the floor of the cockpit 2, seat cushions 30C, 31C of rear seats 30, 31 arranged separately on the left and right sides above the bottom plate 1, seat backs 30B, 31B of rear seats 30, 31 arranged separately on the left and right sides and capable of being tilted forward from the top to the seat cushions 30C, 31C of the rear seats 30, 31, and a first driving battery box 43 arranged above a luggage compartment floor plate 132 forming the floor (bottom surface) of the luggage compartment 2a behind the seat cushions 30C, 31C in the bottom plate 1; and has: Figure 2 As shown in the left and right seat cushions 30C, 31C disposed between the second driving battery box 44 above the bottom plate 1; covering the upper surface portion 44u of the second driving battery box 44 and the left and right side portions of the rear seat with a central console portion 70 (console), such as Figure 4 , Figure 8 The lower portion shown is pivotally supported and can be tilted forward from above toward the center console portion 70 side of the rear seat and is disposed between the seat backs 30B and 31B of the left and right rear seats 30 and 31; and, as shown Figure 7 As shown, the front-to-back thickness (L32) of the middle backrest portion 32 in the standing state is set to be smaller than the front-to-back thickness (eg, L30B) of the seat backs 30B, 31B of the left and right rear seats 30, 31; and, as Figure 4 , Figure 8 As shown, the front end portion 43f of the first driving battery box 43 is arranged to be close to the rear end portions 30Br, 31Br of the seat backs 30B, 31B of the rear seats 30, 31 in the forward folded state; and the upper surface portions 30Bu, 31Bu, 32u of the seat backs 30B, 31B and the middle backrest portion 32 of the left and right rear seats 30, 31 in the forward folded state are in the same plane in the vehicle width direction, and together with the upper surface portion 43u of the first driving battery box 43, form an enlarged luggage compartment floor 2Fa.

[0157] According to the technical solution, the height of the flat and enlarged luggage compartment floor 2Fa formed by folding all the seat backs 30B, 31B of the left and right rear seats 30, 31 and the middle backrest 32 forward can be controlled to be low without damaging the battery capacity, and the floor area of ​​the luggage compartment 2a can be expanded.

[0158] Specifically, above the floor panel 1, not only the first driving battery box 43 but also the second driving battery box 44 disposed between the left and right seat cushions 30C and 31C is provided, thereby ensuring the battery capacity.

[0159] And if Figure 8 As shown, the front end portion 43f of the first driving battery box 43 is arranged close to the rear end portions 30Br, 31Br of the seat backs 30B, 31B of the rear seats 30, 31 in the forward-falling state, and the second driving battery box 44 is arranged between the seat cushions 30C, 31C of the left and right rear seats 30, 31, thereby forming an enlarged luggage compartment floor 2Fa of approximately the same plane (full flat) when the seat backs 30B, 31B and the middle backrest 32 of the left and right rear seats 30, 31 are all folded forward.

[0160] In this way, by arranging the second driving battery box 44 arranged above the floor panel 1 between the seat cushions 30C, 31C of the left and right rear seats 30, 31, the height of the upper surface portions 30Bu, 31Bu of the left and right seat backs 30B, 31B in the forward tilted state can be controlled to be lower than when, for example, it is arranged below the seat cushions 30C, 31C of the left and right rear seats 30, 31.

[0161] On the other hand, although the second driving battery box 44 is provided between the seat cushions 30C and 31C of the left and right rear seats 30 and 31, the front-to-back thickness of the middle backrest portion 32 in the standing state is set to be smaller than the front-to-back thickness of the seat backs 30B and 31B of the left and right rear seats 30 and 31 (L32<L30B (refer to Figure 7 )), the height between the left and right rear seats 30, 31 can be controlled to be lower when the middle backrest portion 32 is in a forward-falling state.

[0162] Therefore, without compromising the battery capacity, the height of the flat and enlarged luggage compartment floor 2Fa when the seat backs 30B, 31B and the center backrest 32 of the left and right rear seats 30, 31 are all folded forward can be controlled to be low, and the floor area of ​​the luggage compartment 2a can be expanded.

[0163] As a form of the present invention, Figure 2 As shown, the bottom plate 1 comprises: a front bottom plate 11 having a channel portion 22 extending forward and backward; an upper curved portion 12 rising from the rear end portion of the front bottom plate 11; a rear seat cushion 131 extending rearward from the upper end portion of the upper curved portion 12 and provided with seat cushions 30C, 31C of rear seats 30, 31; wherein the second driving battery box 44 is arranged above the rear seat cushion 131 and extends forward above the channel portion 22 compared to the upper curved portion 12.

[0164] The above-described technical solution makes it possible to ensure the battery capacity while keeping the height between the seat cushions 30C, 31C of the left and right rear seats 30, 31 low by extending the second driving battery box 44 forward of the upper curved portion 12.

[0165] As a form of the present invention, Figure 5 As shown, the top surface portion 711 of the rear seat center console portion 70 has a tray 77 as a center backrest loading portion that can carry the forward-falling center backrest portion 32 and extends in the front-to-rear direction, and a raised portion 80 that is raised in front of the tray 77 compared to the tray 77; the surface of the raised portion 80 that faces the rear seat passenger in the side view of the vehicle V, that is, the rear portion 81 of the raised upper surface, is provided with a functional surface that stands along the shape of the side view of the vehicle V of the front portion of the forward-falling center backrest portion 32 on the top surface portion 711 of the rear seat center console portion 70.

[0166] According to the technical solution, Figure 5 As shown, the front portion of the forward-falling center backrest portion 32 is almost in contact with or close to the raised upper surface rear portion 81 as the functional surface from the rear side, so the front portion of the forward-falling center backrest portion 32 can protect the functional surface of the rear seat center console portion 70 .

[0167] Furthermore, the tray 77 can be stably supported in a state where the intermediate backrest portion 32 tilted forward is placed thereon.

[0168] As a form of the present invention, Figure 8 As shown, the raised portion 80 and the forward-falling middle backrest portion 32 are arranged so that the raised upper surface front portion 82 and the upper surface portion 32u are substantially in the same plane in the front-rear direction.

[0169] According to the technical solution, the height difference between the raised portion 80 and the forward-falling middle backrest portion 32 can be eliminated, so that the floor of the luggage compartment 2a is flat.

[0170] Other embodiments of the present invention will be described below with reference to the accompanying drawings.

[0171] The vehicle of this embodiment is an electric vehicle that uses the output of a rotating electric machine as a driving force, and a portion of a battery that supplies electric power to the rotating electric machine is disposed in the cabin R. Figures 14 to 19 The cabin structure of such electric vehicle 201 will be described.

[0172] Fig.14 This is a perspective view of the cabin R of the electric vehicle 201 as seen from the rear of the vehicle. Fig.15 is a top view of a cabin R of an electric vehicle 201. Fig.16 It is along Fig.15 The cross-sectional view of A-A in Fig.17 It is along Fig.15 The cross-sectional view of B-B in FIG.

[0173] Fig.18 It is along Fig.15 The cross-sectional view of C-C in Fig.19 It is along Fig.15 The cross-sectional view of D-D in FIG.

[0174] exist Fig.14 In order to make the illustration clear, the illustration of the front seat S1 and the rear seat S2 on the left side of the vehicle and the seat back of the rear seat S2 on the right side of the vehicle are omitted. Figures 17 to 19 In order to make the illustration clear, only the right side of the vehicle is shown.

[0175] In the figure, arrows Fr and Rr indicate the front-rear direction, arrow Fr indicates the front direction, and arrow Rr indicates the rear direction. Arrows Rh and Lh indicate the vehicle width direction, arrow Rh indicates the right direction, and arrow Lh indicates the left direction.

[0176] First, if Fig.14 and Fig.15 As shown, the electric vehicle 201 of this embodiment is a vehicle with a cabin R, which is composed of a passenger cabin R1 and a luggage compartment R2, wherein the passenger cabin R1 has a left and right pair of front seats S1 for passengers and a left and right pair of rear seats S2, and the luggage compartment R2 is located at the rear of the vehicle of the passenger cabin R1 and carries luggage, etc.

[0177] like Fig.14 and Fig.15 As shown, the electric vehicle 201 includes: a front panel 202 constituting the front wall of the cabin R, a pair of left and right side beams 203 extending from the lower portions of the front panel 202 at both ends in the vehicle width direction toward the rear of the vehicle, and a pair of left and right rear side frames 204 connected to the rear portions of the side beams 203 and extending toward the rear of the vehicle.

[0178] The electric vehicle 201 also includes: a front floor 205 that forms the floor of the passenger compartment R1 between the side beams 203, a rear floor 206 that forms the floor of the luggage compartment R2 between the rear side frames 204, and a pair of left and right floor frame upper parts 207 extending in the front and rear directions of the vehicle from the front panel 202 to the front floor 205.

[0179] like Fig.15 and Fig.16 As shown, the electric vehicle 201 further includes a left and right pair of first floor cross members 208, a left and right pair of second floor cross members 209 and a third floor cross member 210 connecting the left and right side members 203 in the vehicle width direction, and a fourth floor cross member 211 connecting the left and right rear side frames 204 in the vehicle width direction.

[0180] Next, each component of the electric vehicle 201 will be described in further detail.

[0181] like Fig.14 As shown, the dash panel 202 is a plate member having a thickness in the vehicle front-rear direction, and a lower end thereof is formed in a shape protruding upward in the vicinity of a substantially center in the vehicle width direction.

[0182] Both ends of the dash panel 202 in the vehicle width direction are connected to hinge pillars (not shown) erected at the front ends of the side members 203 .

[0183] like Fig.14 and Fig.16 As shown, a dash cross member 212 extending in the vehicle width direction along the lower end of the dash panel 202 and connected to a hinge pillar (not shown) is joined to the front surface of the dash panel 202 .

[0184] The dash cross member 212 is a vehicle body frame member, and its cross-sectional shape in the longitudinal section along the vehicle front-rear direction forms a closed cross section with the dash panel 202 , and is formed in a substantially hat-shaped cross section protruding toward the vehicle front.

[0185] The left and right side beams 203 are vehicle body frame members, and their cross-sectional shape in the longitudinal section along the vehicle width direction constitutes a closed cross-section, and as shown in FIG. Fig.14 As shown, it is composed of an inner beam 203 a located on the inner side in the vehicle width direction and an outer beam (not shown) located on the outer side in the vehicle width direction relative to the inner beam 203 a.

[0186] The left and right paired rear side frames 204 are vehicle body frame members, and their cross-sectional shape in the longitudinal section along the vehicle width direction constitutes a closed cross section, and their front end portions are joined to the vehicle width direction inner side of the rear portion of the side member 203 .

[0187] The rear side frame 204 is composed of a side frame upper member 204a (see Fig.18 ) and the side frame lower member 4b (refer to Fig.18 )constitute.

[0188] And, if Fig.14 and Fig.15 As shown, a shock absorber support member 213 supporting the upper end of a rear suspension shock absorber (not shown) is joined to a side frame upper member 204 a of the rear side frame 204 at a position behind the vehicle relative to a fourth floor cross member 211 described later.

[0189] The shock absorber support member 213 is a high-rigidity member made by, for example, aluminum alloy die casting, and is joined to the left and right paired rear side panels (not shown) constituting the inner wall of the luggage compartment R2, the side frame upper member 204a and the fourth floor cross member 211 described later, and functions as a vehicle body frame member.

[0190] A rear wheel (not shown) supported by a rear suspension shock absorber is arranged below the vehicle of the shock absorber support member 213 .

[0191] like Fig.15 and Fig.16As shown, the front floor panel 205 is composed of a plate-shaped floor front portion 251 joined to the lower end of the front panel 202, an upper curved portion 252 rising from the rear end of the floor front portion 251 toward the upper side of the vehicle, and a floor rear portion 253 extending from the upper end of the upper curved portion 252 toward the rear of the vehicle.

[0192] In more detail, Fig.15 As shown, in a plan view, the range of the floor front portion 251 from the lower end of the dash panel 202 to the front end of the rear seat S2 in the vehicle front-rear direction constitutes the floor of the passenger compartment R1.

[0193] And, if Figures 14 to 16 As shown, in the floor front portion 251 , a tunnel portion 251 a protruding upwardly toward the vehicle is formed near the approximate center in the vehicle width direction, and its formation length is the vehicle front-rear direction length from the dash panel 202 to the upper curved portion 252 .

[0194] like Fig.17 As shown, the tunnel portion 251a has a substantially trapezoidal cross-section with the upper surface constituting the short side in the longitudinal section along the vehicle width direction, and appropriate equipment such as a shift lever is fixed to the upper surface.

[0195] like Fig.16 As indicated by the two-dot chain line, a front seat center console 214 is arranged and fixed to the tunnel portion 251a at a position adjacent to the left and right front seats S1 in the vehicle width direction.

[0196] And if Fig.17 As shown, a pair of left and right tunnel frames 215 extending in the vehicle front-rear direction along the lower end of the tunnel portion 251a are joined to the lower surface of the floor front portion 251. The tunnel frame 215 is a vehicle body frame member, and its cross-sectional shape in the longitudinal section along the vehicle width direction forms a closed cross section with the floor front portion 251, and its front end is connected to the dash cross member 212.

[0197] like Fig.16 As shown, the upper curved portion 252 extends from the rear end of the bottom plate front portion 251 toward the upper side of the vehicle and slightly toward the rear side of the vehicle.

[0198] like Fig.16 As shown, the bottom plate rear portion 253 extends from the upper end of the upper curved portion 252 toward the rear of the vehicle, and then extends obliquely rearward and downward.

[0199] like Fig.15 As indicated by the two-dot chain line, a seat portion (number omitted) of the rear seat S2 is mounted and fixed at a position approximately in the vicinity of the center in the vehicle width direction and spaced a predetermined distance apart in the vehicle width direction of the floor rear portion 253 .

[0200] The rear floor panel 206 is a recessed plate member, and is located at the bottom of the vehicle approximately in the center of the vehicle front-rear direction and the center of the vehicle width direction. Fig.16 As shown, its front end is connected to the rear end of the front floor panel 205 via a fourth floor cross member 211 described later.

[0201] like Fig.14 and Fig.15 As shown, the left and right floor frame upper members 207 are arranged in the cabin R between the side members 203 and the tunnel portion 251 a of the front floor panel 205 , with the rear ends thereof being located outward in the vehicle width direction relative to the front ends.

[0202] Specifically, if Fig.15 As shown, in a plan view, the floor frame upper member 207 is arranged along an imaginary straight line (not shown) connecting the rear end of a front side frame 216 extending from the dash panel 202 toward the front of the vehicle and an imaginary straight line in the vehicle width direction outer side of a first floor cross member 208 described later.

[0203] The floor frame upper member 207 is joined to the dash panel 202 and the floor front portion 251 , and is provided as a vehicle body frame member. Its cross-sectional shape in a longitudinal section along the vehicle width direction forms a closed cross-section with the floor front portion 251 .

[0204] The rear end of the floor frame upper member 207 is joined to the front end of a floor frame lower member (not shown) joined to the lower surface of the floor frame front member 251 across the floor frame front member 251 , although detailed illustration is omitted.

[0205] The rear end portion of the floor frame lower member is connected to the front end portion of the rear side frame 204, for example.

[0206] like Fig.15 As shown, the left and right first floor cross members 208 connect the left and right side members 203 via the tunnel portion 251 a of the front floor panel 205 at approximately the center of the floor front portion 251 in the vehicle front-rear direction.

[0207] Specifically, the first floor cross member 208 is a vehicle body frame member whose cross-sectional shape in a longitudinal section along the vehicle front-rear direction forms a closed cross-section with the floor front portion 251 , and is joined to the upper surface of the floor front portion 251 .

[0208] And, if Fig.14 and Fig.15 As shown, the first floor cross member 208 is connected to the side member 203 via a first outer mounting portion 208a on the vehicle width direction outer side, and is connected to the tunnel portion 251a via a first inner mounting portion 208b on the vehicle width direction inner side.

[0209] The first outer mounting portion 208a and the first inner mounting portion 208b are members that fasten and fix the front portion of the seat rail of the front seat S1 at a position below the upper surface of the tunnel portion 251a in the vehicle.

[0210] More specifically, the first outer mounting portion 208 a is substantially box-shaped with an opening below the vehicle and outside in the vehicle width direction, and its longitudinal cross-section along the vehicle width direction forms a closed cross-section with the side member 203 and the first floor cross member 208 .

[0211] On the other hand, the first inner mounting portion 208 b is substantially box-shaped and is open below the vehicle and inward in the vehicle width direction. Its longitudinal cross-sectional shape along the vehicle width direction forms a closed cross-sectional shape with the tunnel portion 251 a and the first floor cross member 208 .

[0212] like Fig.15 As shown, the left and right second floor cross members 209 are connected to the left and right side members 203 via the tunnel portion 251 a of the front floor panel 205 at approximately the center in the vehicle front-rear direction between the first floor cross member 208 and the upper curved portion 252 .

[0213] Specifically, the second floor cross member 209 is a vehicle body frame member whose cross-sectional shape in a longitudinal section along the vehicle front-rear direction forms a closed cross-section with the floor front portion 251 , and is joined to the upper surface of the floor front portion 251 .

[0214] And, if Fig.14 and Fig.15 As shown, the second floor cross member 209 is connected to the side member 203 via a second outer mounting portion 209a on the vehicle width direction outer side, and is connected to the tunnel portion 251a via a second inner mounting portion 209b on the vehicle width direction inner side.

[0215] The second outer mounting portion 209a and the second inner mounting portion 209b are members to which the rear portion of the seat rail of the front seat S1 is fastened and fixed at a position below the upper surface of the tunnel portion 251a in the vehicle.

[0216] In more detail, Fig.17 As shown, the second outer mounting portion 209 a is substantially box-shaped with an opening below the vehicle and outside in the vehicle width direction, and its longitudinal cross-section along the vehicle width direction forms a closed cross-section with the side member 203 and the second floor cross member 209 .

[0217] On the other hand, Fig.17 As shown, the second inner mounting portion 209 b is substantially box-shaped with an opening below the vehicle and inside in the vehicle width direction, and its longitudinal cross-section along the vehicle width direction forms a closed cross-section with the tunnel portion 251 a and the second floor cross member 209 .

[0218] like Fig.17 As shown, a fastening bracket 217 is joined to the upper surface of the second inner mounting portion 209b. The cross-sectional shape of the fastening bracket 217 in the longitudinal section along the vehicle width direction is substantially a crank shape, and is used to fasten and fix the battery unit 230 described later.

[0219] like Fig.17 As shown, the fastening bracket 217 forms a closed cross section with the channel portion 251a and the second inner mounting portion 209b, thereby constituting a high rigidity portion in the channel portion 251a.

[0220] Specifically, if Fig.17 As shown, the fastening bracket 217 is integrally formed by the following parts, and its cross-section is roughly crank-shaped: a flat plate-shaped lower base 217a joined to the upper surface of the second inner mounting portion 209b, a flat plate-shaped upper base 217b joined to the upper surface of the channel portion 251a, and a flat plate-shaped connecting portion 217c opposite to the side surface of the channel portion 251a at a predetermined interval to the outside in the vehicle width direction.

[0221] Furthermore, an insertion hole (number omitted) is formed in the upper base 217b of the fastening bracket 217, and a bolt 218 for fixing the battery unit 230 described later is inserted into the insertion hole, and a welding nut 217d screwed with the bolt 218 is engaged with the lower surface of the upper base 217b.

[0222] The third floor cross member 210 is a vehicle body frame member, and its cross-sectional shape in the longitudinal section along the front-rear direction of the vehicle forms a closed cross-section with the front floor panel 205, and as shown in FIG. Fig.16 As shown, the third floor cross member 210 is connected across the curved portion 252 and is joined to the rear end of the floor front portion 251 and the front end of the floor rear portion 253 .

[0223] In addition, if Fig.16 As shown, the fourth floor cross member 211 is disposed at the boundary between the floor rear portion 253 and the rear floor 206. The fourth floor cross member 211 is a vehicle body frame member, and its cross section along the longitudinal direction of the vehicle constitutes a closed cross section, and is composed of a cross member upper member 211a located on the upper side of the vehicle and a cross member lower member 211b located on the lower side of the vehicle relative to the cross member upper member 211a.

[0224] like Figures 14 to 16 As shown, in the electric vehicle 201 having the vehicle body structure as described above, a battery unit 230 for supplying electric power to the rotating electric machine is arranged across the passenger compartment R1 and the luggage compartment R2.

[0225] like Fig.15 and Fig.16 As shown, the battery unit 230 is composed of a first battery 231 arranged in the luggage compartment R2, a second battery 232 arranged in the passenger compartment R1, and a battery case 233 that integrally accommodates the above batteries.

[0226] In detail, Fig.15 and Fig.16As shown, the first battery 231 is substantially rectangular in a plan view and is arranged in the front portion of the rear floor panel 206 and close to the seat back of the rear seat S2 (number omitted) on the vehicle rear side of the seat back of the rear seat S2.

[0227] On the other hand, Fig.15 As shown, the second battery 232 is smaller in width than the first battery 231, is substantially rectangular in a plan view and is long in the front-rear direction of the vehicle, and is disposed between the left and right rear seats S2.

[0228] The first battery 231 and the second battery 232 are formed of, for example, lithium-ion batteries.

[0229] like Fig.15 and Fig.16 As shown, the battery housing 233 is a high-rigidity housing made of, for example, aluminum alloy die-casting, and is integrally formed by a housing rear portion 234 for accommodating and placing the first battery 231 and a housing front portion 235 for accommodating and placing the second battery 232, and is roughly T-shaped in a top view.

[0230] The battery case 233 is composed of a plate-shaped cover portion (number omitted) constituting the upper surface and a storage portion (number omitted) having an opening closed by the cover portion on the upper side of the vehicle, and the cover portion is fastened to the storage portion, and the storage portion is fastened to a high-rigidity portion of the vehicle body.

[0231] In more detail, Fig.15 As shown, the rear shell portion 234 is roughly box-shaped, and its length in the vehicle width direction is the length from one rear side frame 204 to the other rear side frame 204, and its length in the front-to-back direction is the length from the fourth floor cross beam 211 to the approximate center of the rear bottom plate 206 in the vehicle front-to-back direction.

[0232] like Fig.15 As shown, the housing rear portion 234 includes a left and right pair of first fixing portions 234a for fastening and fixing to the rear side frame 204 at the rear of the vehicle relative to the shock absorber support member 213, and a left and right pair of second fixing portions 234b for fastening and fixing to the shock absorber support member 213.

[0233] Specifically, if Fig.15 and Fig.18 As shown, the left and right first fixing portions 234a are flat-plate-shaped, projecting outward in the vehicle width direction from the side surface near the rear end of the shell rear portion 234, and are fastened to two welding bolts 219 erected on the rear side frame 204 at a predetermined interval in the vehicle width direction.

[0234] The first fixing portion 234 a is fixed to the rear side frame 204 with a spacer 236 interposed between the inner side in the vehicle width direction of the lower surface of the first fixing portion 234 a and the upper surface of the rear side frame 204 .

[0235] On the other hand, Fig.15 and Fig.19 As shown, the left and right second fixing portions 234 b are flat plate-shaped and protrude outward in the vehicle width direction from the side surface near the front end of the housing rear portion 234 , and are fastened to a welding bolt 220 erected on the shock absorber support member 213 .

[0236] like Fig.15 and Fig.16 As shown, the housing front portion 235 partitions the foot space of the rear seat S2 in the vehicle width direction, and its length in the vehicle front-rear direction is formed so that its front end is located inside the front seat center console 214.

[0237] Specifically, if Fig.15 and Fig.16 As shown, the housing front portion 235 is generally box-shaped, and its length in the vehicle front-rear direction is the length from the front end of the housing rear portion 234 to the second floor cross member 209, and its upper surface is located below the vehicle compared to the upper surface of the housing rear portion 234.

[0238] like Fig.16 As indicated by the two-dot chain line, the housing front portion 235 is disposed between the left and right rear seats S2 and is covered by a rear seat center console 221 extending toward the rear of the vehicle in a continuous manner with the front seat center console 214 .

[0239] like Fig.15 As shown, the housing front portion 235 has a left and right pair of third fixing portions 235a, which are used to fix the housing front portion 235 to the closed cross-section portion formed by the bottom plate front portion 251 and the second floor cross member 209 and the second inner mounting portion 209b.

[0240] Specifically, if Fig.15 and Fig.17 As shown, the left and right third fixing portions 235 a are flat plate-shaped and protrude outward in the vehicle width direction from the side surface near the front end of the housing front portion 235 , and are fastened to the fastening bracket 217 using bolts 218 .

[0241] As described above, the case rear portion 234 of the battery unit 230 connects high-rigidity portions (the left and right rear side frames 204 and the left and right shock absorber support members 213 ) sandwiching the rear suspension shock absorber and spaced a predetermined distance apart in the vehicle longitudinal direction in the vehicle width direction.

[0242] The housing front portion 235 of the battery unit 230 connects the housing rear portion 234 to a high-rigidity portion (a closed cross-section portion formed by the second floor cross member 209, a closed cross-section portion formed by the fastening bracket 217, and the second inner mounting portion 209b) located in front of the vehicle relative to the rear seat S2.

[0243] In other words, the electric vehicle 201 connects the left and right rear side frames 204 and the left and right shock absorber support members 213 to a high-rigidity portion (a closed cross-section portion formed by the second floor cross member 209, a closed cross-section portion formed by the fastening bracket 217, and the second inner mounting portion 209b) in front of the vehicle relative to the rear seat S2 via the battery unit 230.

[0244] As described above, the cabin structure of the electric vehicle 201 in this embodiment includes the front floor 205 constituting the floor of the passenger cabin R1 and the left and right rear seats S2 arranged on the front floor 205 at a predetermined interval in the vehicle width direction and located at the rearmost position of the vehicle.

[0245] The cabin structure of the electric vehicle 201 further includes a highly rigid battery case 233 that accommodates a first battery 231 disposed at the rear of the vehicle where the rear seat S2 is placed and a second battery 232 disposed between the rear seats S2 .

[0246] The battery housing 233 is integrally formed by the following parts and is roughly T-shaped in a top view: a housing rear portion 234, which extends in the vehicle width direction from the outer side of the rear seat S2 on one side to the outer side of the rear seat S2 on the other side, and accommodates and houses the first battery 231; a housing front portion 235, which extends from the housing rear portion 234 through between the rear seats S2 toward the front of the vehicle, and accommodates and houses the second battery 232.

[0247] The case rear portion 234 of the battery case 233 is fixed to a high-rigidity portion (the rear side frame 204 and the shock absorber support member 213 ) of a pair of left and right vehicle bodies located behind the vehicle relative to the rear seat S2 .

[0248] Furthermore, the front portion 235 of the battery housing 233 is fixed to a high-rigidity portion of the vehicle body located forward of the vehicle relative to the seat back of the rear seat S2 (the closed cross-section portion formed by the second floor cross member 209, the closed cross-section portion formed by the fastening bracket 217, and the second inner mounting portion 209b).

[0249] This solution can ensure the battery capacity of the electric vehicle 201 by the first battery 231 and the second battery 232 arranged in the cabin R.

[0250] At this time, the first battery 231 and the second battery 232 are housed in the highly rigid battery case 233 , so the cabin structure of the electric vehicle 201 can protect the first battery 231 and the second battery 232 from unexpected external forces.

[0251] In addition, the rear portion 234 of the battery housing 233 is fixed to a high-rigidity portion of the vehicle body located behind the rear seat S2, so that the cabin structure of the electric vehicle 201 can be connected to the vicinity of the load input point in the vehicle body that will be subject to input load from the rear wheels through the rear portion 234 of the housing in the vehicle width direction.

[0252] In addition, the shell rear portion 234 is fixed to a high-rigidity portion of the vehicle body located in front of the vehicle relative to the seat back of the rear seat S2 via the shell front portion 235, so that the cabin structure of the electric vehicle 201 can prevent the shell rear portion 234 from bending and twisting due to the input load from the rear wheels.

[0253] As a result, the cabin structure of the electric vehicle 201 can allow the battery case 233 to function as a frame member for reinforcing the vehicle body, thereby improving the bending rigidity and torsional rigidity of the vehicle body.

[0254] Furthermore, compared with the case where a connection member separate from the battery case 233 is used to connect the portion close to the load input point in the vehicle width direction, the cabin structure of the electric vehicle 201 can suppress an increase in weight.

[0255] Therefore, the cabin structure of the electric vehicle 201 can improve the body rigidity while ensuring the battery capacity, and suppress the increase in weight of the electric vehicle 201.

[0256] The cabin structure of the electric vehicle 201 further includes a rear floor panel 206 that forms a floor of a luggage room R2 at the rear of the vehicle behind the front floor panel 205 .

[0257] Furthermore, the first battery 231 is disposed on the rear bottom plate 206 .

[0258] In addition, the case rear portion 234 of the battery case 233 is fixed to a high-rigidity portion (the rear side frame 204 and the shock absorber support member 213 ) adjacent to the rear floor panel 206 in the vehicle width direction.

[0259] According to this technical solution, for example, in the cabin R in which the passenger compartment R1 and the luggage compartment R2 are provided as if integrated, the case rear portion 234 of the battery case 233 can be fixed at a position closer to the left and right load input points.

[0260] As a result, the cabin structure of the electric vehicle 201 can allow the battery case 233 to reliably function as a frame member for reinforcing the vehicle body, and thus the vehicle body rigidity can be further improved.

[0261] The cabin structure of the electric vehicle 201 further includes a pair of left and right rear side frames 204 to which the end portions of the rear floor panel 206 in the vehicle width direction are connected.

[0262] In addition, the ends of the case rear portion 234 of the battery case 233 in the vehicle width direction are fixed to the left and right rear side frames 204 .

[0263] In this technical solution, the rear portion 234 of the battery housing 233 is fixed to the existing high-rigidity portion, namely the rear side frame 204, so there is no need to set up an additional high-rigidity portion in the luggage compartment R2.

[0264] Furthermore, the rear side frame 204 which is susceptible to the input load from the rear wheels can be connected in the vehicle width direction via the housing rear portion 234 . Therefore, the cabin structure of the electric vehicle 201 can further effectively suppress the body torsion caused by the input load from the rear wheels via the battery housing 233 .

[0265] The cabin structure of the electric vehicle 201 further includes a shock absorber support member 213 adjacent to the vehicle width direction outer side of the rear floor panel 206 and supporting the upper end of the rear suspension shock absorber. In addition, the vehicle width direction end of the housing rear portion 234 of the battery housing 233 is fixed to the shock absorber support member 213.

[0266] According to this technical solution, the rear portion 234 of the battery housing 233 is fixed to the shock absorber support member 213, which is an existing high-rigidity portion, so there is no need to provide an additional high-rigidity portion in the luggage compartment R2.

[0267] Furthermore, since the shock absorber support member 213 to which the input load from the rear wheels directly acts can be connected in the vehicle width direction via the housing rear portion 234 , the cabin structure of the electric vehicle 201 can further effectively suppress the body torsion caused by the input load from the rear wheels via the battery housing 233 .

[0268] The case front portion 235 of the battery case 233 is formed with a length in the vehicle front-rear direction that passes between the rear seats S2 and partitions the foot space of the rear seats S2 in the vehicle width direction.

[0269] This technical solution can effectively utilize the space between the rear seats S2 to ensure the battery capacity, and separate the left and right rear seats S2 by the front shell portion 235, thereby forming an independent seat space.

[0270] Furthermore, by covering the case front portion 235 with the rear seat center console 221, the cabin structure of the electric vehicle 201 can prevent the aesthetics between the left and right rear seats S2 from being reduced due to the case front portion 235 of the battery case 233, and can improve the riding comfort and sense of luxury in the rear part of the passenger compartment R1.

[0271] The case front portion 235 of the battery case 233 is fixed to the second inner mounting portion 209 b to which the front seat S1 is mounted.

[0272] In this technical solution, the housing front portion 235 of the battery housing 233 is fixed to the existing high-rigidity portion, namely the second inner mounting portion 209b, so it is not necessary to set up a high-rigidity portion in the passenger compartment R1. Therefore, the cabin structure of the electric vehicle 201 can suppress the increase in weight and improve the body rigidity.

[0273] The cabin structure of the electric vehicle 201 includes: a pair of left and right side beams 203 extending in the front-rear direction of the vehicle and connected to the vehicle width direction ends of the front floor panel 205, and a second floor cross beam 209 connecting the side beams 203 in the vehicle width direction and forming a closed cross section extending in the vehicle width direction with the front floor panel 205.

[0274] In addition, the case front portion 235 of the battery case 233 is fixed to the closed cross-section portion formed by the front floor panel 205 and the second floor cross member 209 .

[0275] In this technical solution, the housing front portion 235 of the battery housing 233 is fixed to the existing high-rigidity portion, ie, the closed cross-section portion, so there is no need to provide a high-rigidity portion in the passenger compartment R1. Therefore, the cabin structure of the electric vehicle 201 can suppress weight increase and improve vehicle body rigidity.

[0276] The front floor panel 205 further includes a tunnel portion 251 a that protrudes upward in the vehicle and extends in the vehicle front-rear direction substantially at the center in the vehicle width direction.

[0277] The case front portion 235 of the battery case 233 is disposed above the vehicle in the tunnel portion 251 a and is fixed to a high-rigidity portion (a closed cross-section portion formed by the fastening bracket 217 ) provided in the tunnel portion 251 a .

[0278] In this aspect, even when the front floor panel 205 includes the tunnel portion 251 a , the case front portion 235 of the battery case 233 can be reliably supported, and thus the rigidity of the vehicle body can be reliably improved.

[0279] Number Description 1…Base Plate 2…Cockpit 11…Front bottom plate 12…Upper part 22…Channel 30C, 31C…Rear seat cushion (rear seat part) 30B, 31B…Rear seat backrest (back seat backrest) 30Bu, 31Bu…The upper surface of the seat back of the rear seat in the forward-folded state (the upper surface of the backrests of the left and right rear seats in the forward-folded state) 30Br, 31Br…Rear end of the seat backrest of the rear seat in the forward-folded state (rear end of the backrest of the rear seat in the forward-folded state) 32…Middle back 34…Forward-leaning middle backrest (rear seat with armrest) 32u…Upper surface of the middle backrest when leaning forward 43…Battery box for the first drive 43f ... front end portion of the first driving battery box 43u…Top surface of the first driving battery box 44… Second drive battery box 44u…Upper surface of the second driving battery box 70…Center console for rear seats (console) 711…Top surface of the center console for rear seats (upper surface of the console) 77…Tray (middle backrest loading part) 80…Bump 81 ... rear portion of raised upper surface (a surface of the raised portion that faces a rear seat passenger in a side view of the vehicle) 82…front part of the raised upper surface (upper surface part of the raised part) 92…Item Storage Department 131…Rear seat pad 132… Luggage compartment floor (the part of the floor panel that is located behind the rear seat area) L30B…The front-to-back thickness of the rear seat backrest (the front-to-back thickness of the rear seat backrest) L32…The front-to-back thickness of the middle backrest in the standing position 201…Electric vehicles 202…Front panel 203…Side beam 204…Rear side frame 205…Front bottom plate 206…Rear bottom plate 209…2nd floor beam 209b…Second inner mounting portion 212…Front cross member 213…Shock absorber support member 217… Fastening bracket 231…Battery No. 1 232…2nd battery 233…Battery housing 234…Rear of housing 235…Housing front 251…Front of floor 251a…Channel 30, 31, S2…back seat R1… Cabin 2a, R2…Luggage compartment

Claims

1. A cockpit structure comprising: a floor constituting a bottom surface of a cockpit, front seats separated from each other on the front part of the floor, and a front seat center console between the left and right front seats, and rear seats separated from each other on the rear part of a curved part of the floor and capable of tilting their seat backs forward, and a rear seat center console between the left and right rear seats, wherein: A first driving battery is arranged on a luggage compartment on a floor behind a rear seat back and extends in the vehicle width direction, and a second driving battery is arranged on a floor between left and right rear seats and extends in the front-rear direction, wherein: The first and second driving batteries are T-shaped in a top view. The left and right ends of the first driving battery are fixed to the luggage compartment of the floor, and the front end of the second driving battery is fixed to the floor at a position where it passes over the upper curved portion and enters the front seat center console. When the rear seat backrest is folded forward, the upper surface of the seat backrest and the upper surfaces of the first and second driving batteries form an enlarged luggage compartment surface that is substantially on the same plane.

2. The cockpit structure according to claim 1, characterized in that: Between the left and right rear seat backrests is a middle backrest that can be tilted forward toward the upper surface of the rear center console. The front-to-back thickness of the center backrest in the upright state is set to be smaller than the front-to-back thickness of the left and right rear seat backs. After being tilted forward, the upper surfaces of the left and right rear seat backs and the center seat back are on the same plane in the vehicle width direction.

3. The cockpit structure according to claim 2, characterized in that: A seat back support portion is provided on the upper portion of the rear seat console to receive the middle seat back that is folded forward, and a raised portion is provided in front of the seat back support portion. A functional panel having input and output functions for rear seat passengers is provided at a portion of the raised portion facing rear seat passengers. The functional panel will be covered by the middle seat backrest which folds forward.

4. The cockpit structure according to claim 1, characterized in that: The rear portion of the front seat center console and the front end portion of the second driving battery are fixed to the center portion of the floor in the vehicle width direction by a common mounting member.

5. The cockpit structure according to claim 4, characterized in that: The front seat center console has an upwardly open article storage portion and a rear seat air conditioning vent disposed behind the article storage portion. The front end of the second driving battery is close to the rear end of the article storage portion, and the rear seat air conditioning outlet is provided above the front end of the second driving battery.

6. The cockpit structure according to claim 5, characterized in that: A duct is provided inside the front seat center console to guide the exhaust air of the air conditioning unit at the front of the cabin to the air outlet for the rear seat. The article storage part is a bottomed cylindrical part including a bottom part and left and right side walls. The duct is inserted from below the article storage portion into a space between a side portion of the front seat center console portion and the side wall of the article storage portion and reaches the rear seat air outlet.

7. The cockpit structure according to claim 1, characterized in that: An aluminum battery case is provided, which is formed integrally with a rear portion of the case for accommodating a first driving battery and a front portion of the case for accommodating a second driving battery, and is roughly T-shaped in a plan view. The rear part of the battery case is fixed to the high-rigidity parts of the left and right paired vehicle body behind the rear seat. The front portion of the battery case is fixed to a high-rigidity portion of the vehicle body located in the vehicle front position of the seat back of the seat.

8. The cockpit structure according to claim 7, characterized in that: Both ends of the rear portion of the battery case in the vehicle width direction are fixed to the left and right rear side frames.

9. The cockpit structure according to claim 7, characterized in that: A shock absorber support portion is provided to support the upper end of the rear suspension shock absorber. Both ends of the rear portion of the battery case in the vehicle width direction are fixed to the shock absorber support portions.

10. The cockpit structure according to claim 7, characterized in that: The floor has a floor tunnel that protrudes upward and extends in the vehicle front-rear direction at a substantially center in the vehicle width direction. The front end of the front portion of the battery housing is fixed to a high-rigidity portion of the floor tunnel.

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