Vehicle rear seat structure and vehicle

Abstract

To obtain a vehicle rear seat structure and a vehicle which can maintain favorable seating comfort of a rear seat in a structure in which a battery is disposed below the rear seat.SOLUTION: A vehicle rear seat structure includes: a rear seat 100 disposed at a rear part inside a vehicle cabin; a battery unit 14 disposed at a vehicle lower side of the rear seat 100; and a resin pedestal 12 provided between the rear seat 100 and the battery unit 14, having a plate thickness direction set in a vehicle vertical direction, and including an upper surface formed in a shape that conforms to the rear seat.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a vehicle rear seat structure and a vehicle. [Background technology]

[0002] Patent Document 1 discloses a structure in which a battery unit is disposed below a floor panel that forms the floor surface of a vehicle. In the vehicle described in Patent Document 1, a part of the battery module that constitutes the battery unit is disposed below the rear seat. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6442609 Summary of the Invention [Problem to be solved by the invention]

[0004] However, since the battery module includes a cooling fan, wiring, and the like in addition to the battery, the upper surface of the battery module may be uneven. Therefore, in a structure in which the battery module is disposed below the rear seat as in Patent Document 1, there is room for improvement in order to achieve a structure that is comfortable to sit in.

[0005] The present invention aims to provide a vehicle rear seat structure and a vehicle that can maintain good seating comfort in a structure in which a battery is disposed below the rear seat. [Means for solving the problem]

[0006] The vehicle rear seat structure according to claim 1 includes a rear seat arranged at the rear of a vehicle interior, a battery unit arranged on the vehicle lower side of the rear seat, and a resin base provided between the rear seat and the battery unit, the base having a thickness direction in the vertical direction of the vehicle and an upper surface formed in a shape that follows the rear seat.The base is formed by connecting a plurality of resin parts in the vehicle width direction, and the upper surfaces of the resin parts are connected by a continuous curved surface, and the upper surface of the base is formed as a smooth curved surface as a whole so that recesses are formed on the left and right sides. .

[0007] In the vehicle rear seat structure according to claim 1, a rear seat is disposed in the rear of the vehicle interior, and a battery unit is disposed below the rear seat. A resin base is provided between the rear seat and the battery unit, and the base has a thickness direction aligned with the vertical direction of the vehicle, with its upper surface shaped to fit the rear seat. By providing the base between the rear seat and the battery unit and shaping the upper surface of the base to fit the rear seat, the rear seat can be made comfortable even if the upper surface of the battery unit is uneven. In addition, because the base is formed by connecting multiple resin parts, parts can be transported more efficiently than in a structure where the base is integrally formed from resin.Furthermore, since large-scale equipment is not required to mold the base, increases in manufacturing costs can be suppressed.

[0008] The vehicle rear seat structure according to claim 2 is the vehicle rear seat structure according to claim 1, wherein the base is attached to a side surface of the battery unit. The whole of The vehicle has a side wall portion that covers the vehicle from the outside in the vehicle width direction.

[0009] In the vehicle rear seat structure according to claim 2, the side surfaces of the battery unit are covered from the outside in the vehicle width direction by the side wall portions of the base, thereby enabling the battery to be protected by the side wall portions in the event of a side collision of the vehicle.

[0010] A vehicle rear seat structure according to claim 3 is the same as claim 1, wherein a recess is formed on the lower surface of the base in correspondence with a protrusion formed on the upper surface of the battery unit.

[0011] In the vehicle rear seat structure according to claim 3, the protrusion on the battery unit side can be engaged with the recess formed on the underside of the base, allowing the base and the battery unit to be closely attached to each other.

[0014] Claim 4 The vehicle according to the present invention is 3 The vehicle rear seat structure according to any one of the preceding claims.

[0015] Claim 4In the vehicle according to the present invention, in a structure in which the battery is disposed below the rear seat, even if the upper surface of the battery unit is formed unevenly, the riding comfort of the rear seat can be improved. [Effects of the Invention]

[0016] As described above, the vehicle rear seat structure and vehicle according to the present invention can maintain good seating comfort in the rear seat in a structure in which the battery is disposed below the rear seat. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a side cross-sectional view that schematically shows a rear portion of a vehicle to which a vehicle rear seat structure according to an embodiment is applied. [Figure 2] FIG. 2 is an exploded perspective view showing a battery unit and a base in the embodiment. [Figure 3] FIG. 3 is a cross-sectional view showing a state cut along line 3-3 in FIG. 2. DETAILED DESCRIPTION OF THE INVENTION

[0018] A vehicle rear seat structure 10 according to an embodiment will be described with reference to the drawings. Note that the arrows FR, UP, and LH shown in each drawing indicate the front side in the vehicle longitudinal direction, the upper side in the vehicle vertical direction, and the left side of the vehicle facing the direction of travel, respectively, of a vehicle V to which the vehicle rear seat structure 10 is applied. Hereinafter, when the directions of front-rear, up-down, and left-right are simply used in the description, they will refer to front-rear in the vehicle longitudinal direction, up-down in the vehicle vertical direction, and left-right in the vehicle width direction, unless otherwise specified.

[0019] As shown in FIG. 1, a rear seat 100 is disposed at the rear of a vehicle V to which a vehicle rear seat structure 10 is applied, and a battery unit 14 is disposed below the rear seat 100. The battery unit 14 is configured to be able to supply electric power to a motor, which is a drive source of the vehicle V, via a wire harness (not shown). Furthermore, the vehicle V of this embodiment is, as an example, an HEV (Hybrid Electric Vehicle) equipped with an engine and a motor as drive sources, but may also be applied to a BEV (Battery Electric Vehicle) that uses only a motor as a drive source.

[0020] The battery unit 14 is fixed onto a floor panel 16. The floor panel 16 is formed in a generally stepped shape so that the rear side of the vehicle is positioned higher than the front side of the vehicle, and is configured to include, from bottom to top, a lower step portion 16A, a middle step portion 16B, and an upper step portion 16C. The battery unit 14 is fixed onto the lower step portion 16A of the floor panel 16.

[0021] The floor panel 16 has a middle section 16B separated by a step rearward from the lower section 16A, and an upper section 16C separated by a step rearward from the middle section 16B. The upper section 16C forms the floor surface of the luggage space.

[0022] A first reinforcing member 18 having a generally L-shaped cross section is joined to the front end of the lower stage portion 16A of the floor panel 16, and the first reinforcing member 18 and the floor panel 16 form a closed cross section. Furthermore, a second reinforcing member 20 having a generally L-shaped cross section is joined to the front end of the middle stage portion 16B of the floor panel 16, and the second reinforcing member 20 and the floor panel 16 form a closed cross section.

[0023] A protrusion 24 having a generally hat-shaped cross section is formed on the upper surface of the battery unit 14. The protrusion 24 extends in the vehicle width direction, and a wire harness and the like are arranged in the space between the protrusion 24 and the upper surface of the battery unit 14.

[0024] A mounting bracket 22 is provided on the upper part of the front end of the battery unit 14. The cross section of the mounting bracket 22, when viewed from the vehicle width direction, is formed in a generally U-shape with an open bottom, and the front end of the mounting bracket 22 is joined to the front surface of the battery unit 14. The rear end of the mounting bracket 22 is bent along the upper surface of the battery unit 14 and joined to the upper surface of the battery unit 14. The seat frame of the rear seat 100 is attached to the mounting bracket 22. In this way, the upper surface of the battery unit 14 in this embodiment is formed in an uneven shape by the protrusions 24, the mounting bracket 22, etc.

[0025] Here, a resin base 12 is provided between the rear seat 100 and the battery unit 14. The detailed structure of the base 12 will be described below.

[0026] (Pedestal 12) As shown in FIG. 2, the base 12 of this embodiment is formed by connecting four resin parts, namely, a first resin part 30, a second resin part 32, a third resin part 34, and a fourth resin part 36, in the vehicle width direction.

[0027] The first resin part 30 constitutes the vehicle right end part of the base 12. The first resin part 30 is configured to include an upper wall part 30A, a front wall part 30B, and a right wall part 30C (see FIG. 3). The lower surface of the upper wall part 30A of the first resin part 30 is formed with three engagement groove parts 30D that are hollowed out in a substantially cylindrical shape.

[0028] The second resin part 32 is disposed to the left of the first resin part 30. The second resin part 32 as a whole extends in the vehicle longitudinal direction and the vehicle width direction with the vehicle vertical direction as its plate thickness direction. The upper surface of the second resin part 32 is formed into a curved surface that is continuous with the upper wall portion 30A of the first resin part 30.

[0029] An engagement piece 32A extends from the right end of the second resin component 32 toward the right side of the vehicle. The engagement piece 32A extends from the lower part of the second resin component 32 toward the right side of the vehicle, and three substantially cylindrical engagement protrusions 32B are formed on the upper surface of the engagement piece 32A. Each of the three engagement protrusions 32B is formed in a shape corresponding to one of the engagement grooves 30D of the first resin component 30, and the first resin component 30 and the second resin component 32 are connected by engaging the engagement protrusions 32B with the engagement grooves 30D.

[0030] An engagement piece 32C extends toward the left side of the vehicle from the left end of the second resin part 32. The engagement piece 32C extends toward the left side of the vehicle from the upper part of the second resin part 32, and three engagement grooves 32D each having a substantially cylindrical shape are formed on the lower surface of the engagement piece 32C.

[0031] A third resin part 34 is disposed to the left of the second resin part 32. The third resin part 34 as a whole extends in the vehicle front-rear direction and the vehicle width direction, with the vehicle up-down direction as its plate thickness direction. The upper surface of the third resin part 34 is formed into a curved surface that is continuous with the upper surface of the second resin part 32.

[0032] An engagement piece 34A extends toward the left side of the vehicle from the left end of the third resin component 34. The engagement piece 34A extends toward the left side of the vehicle from the lower part of the third resin component 34, and three substantially cylindrical engagement protrusions 34B are formed on the upper surface of the engagement piece 34A. Each of the three engagement protrusions 34B is adapted to engage with a fourth resin component 36, which will be described later.

[0033] An engagement piece 34C extends from the right end of the third resin component 34 toward the right side of the vehicle. The engagement piece 34C extends from the lower part of the third resin component 34 toward the right side of the vehicle, and three substantially cylindrical engagement protrusions 34D are formed on the upper surface of the engagement piece 34C. Each of the three engagement protrusions 34D is formed in a shape corresponding to the engagement groove 32D of the second resin component 32, and the second resin component 32 and the third resin component 34 are connected by engaging the engagement protrusions 34D with the engagement groove 32D.

[0034] A fourth resin part 36 is disposed to the left of the third resin part 34. The fourth resin part 36 constitutes the vehicle left end part of the base 12. The fourth resin part 36 is configured to include an upper wall part 36A, a front wall part 36B, and a left wall part 36C, and the upper wall part 36A is formed into a curved surface that is continuous with the upper surface of the third resin part 34.

[0035] Furthermore, three engagement grooves 36D, each cut out in a substantially cylindrical shape, are formed on the lower surface of the upper wall portion 36A of the fourth resin part 36, and the engagement protrusions 34B of the third resin part 34 are engaged with the respective engagement grooves 36D.

[0036] The first resin part 30, the second resin part 32, the third resin part 34, and the fourth resin part 36 that make up the base 12 are configured as described above, and as shown in Fig. 3, with the first resin part 30, the second resin part 32, the third resin part 34, and the fourth resin part 36 connected in the vehicle width direction, the top surface 12A of the base 12 is formed into a shape that conforms to the rear seat. Specifically, the top surface 12A of the base 12 has a smooth curve such that recesses are formed on the left and right sides, and the center of the rear seat 100 is positioned in each recess.

[0037] Furthermore, the right and left side walls 12B of the base 12 are each formed in a shape that covers the side surfaces of the battery unit 14 from the outside in the vehicle width direction. Specifically, an end face on the inner side in the vehicle width direction (vehicle left side) of the front wall 30B of the first resin part 30 that constitutes the base 12 abuts against the front side surface of the battery unit 14. Similarly, an end face on the inner side in the vehicle width direction (vehicle right side) of the front wall 36B of the fourth resin part 36 that constitutes the base 12 abuts against the front side surface of the battery unit 14.

[0038] On the right side surface of the battery unit 14, a space is provided between the surface rearward of the position where the front wall portion 30B abuts and the right wall portion 30C of the first resin component 30, allowing for the placement of a fan or the like for cooling the battery unit 14. Similarly, on the left side surface of the battery unit 14, a space is provided between the surface rearward of the position where the front wall portion 36B abuts and the left wall portion 36C of the fourth resin component 36.

[0039] Furthermore, a cutout portion cut toward the rear of the vehicle is formed in the base 12 between the first resin component 30 and the second resin component 32, and between the third resin component 34 and the fourth resin component 36, and the mounting bracket 22 is disposed at the position of the cutout portion. In other words, the base 12 is formed in a shape that avoids the mounting bracket 22. Although not shown, in this embodiment, the front end of the base 12 is disposed substantially flush with the front end of the battery unit 14.

[0040] 1, a recess 12C corresponding to the protrusion 24 is formed on the underside of the base 12. Therefore, when the base 12 is attached, the protrusion 24 fits into the recess 12C, so that the base 12 and the battery unit 14 are in close contact with each other.

[0041] (action) Next, the operation of this embodiment will be described.

[0042] According to the vehicle rear seat structure 10 of this embodiment, a rear seat 100 is disposed in the rear of the vehicle interior, and a battery unit 14 is disposed below the rear seat 100. A resin base 12 is provided between the rear seat 100 and the battery unit 14, and the base 12 has a thickness direction that is in the vertical direction of the vehicle, and an upper surface 12A is formed in a shape that conforms to the rear seat 100. By providing the base 12 between the rear seat 100 and the battery unit 14 in this way, and by forming the upper surface 12A of the base 12 in a shape that conforms to the rear seat 100, it is possible to improve the riding comfort of the rear seat 100 even when the upper surface of the battery unit 14 is formed in an uneven shape.

[0043] In addition, in this embodiment, the side surfaces of the battery unit 14 are covered from the outside in the vehicle width direction by the first resin part 30 and the fourth resin part 36 that form the side wall portions of the base 12. This allows the battery to be protected by the base 12 in the event of a side collision of the vehicle V.

[0044] In particular, in this embodiment, as shown in Figure 3, the first resin part 30 and the fourth resin part 36 of the base 12 are abutted against the side of the battery unit 14, so that the load input from the side of the vehicle during a side collision of the vehicle V can be effectively transmitted to the anti-collision side via the base 12 and the battery unit 14.

[0045] 1, in this embodiment, the protrusion 24 on the battery unit 14 can be engaged with the recess 12C formed on the underside of the base 12, thereby bringing the base 12 and the battery unit 14 into close contact with each other. In this embodiment, the protrusion 24 is formed to have a hat-shaped cross section, which allows a wire harness or the like to be disposed inside the protrusion 24. Furthermore, because the protrusion 24 extends in the vehicle width direction, even if the base 12 is formed of resin, the base 12 can be reinforced by forming the protrusion 24 from sheet metal or the like, and the load can be effectively transmitted in the vehicle width direction.

[0046] Furthermore, in this embodiment, the base 12 is formed by connecting multiple (four) resin parts, which allows for more efficient transport of parts compared to a structure in which the base 12 is integrally formed from resin. In particular, since the first resin part 30, the second resin part 32, the third resin part 34, and the fourth resin part 36 are all made of resin, they are lighter than metal and therefore easier to transport.

[0047] Furthermore, compared to a structure in which the base 12 is integrally formed from resin, no large-scale equipment is required to mold the base 12, and therefore increases in manufacturing costs can be suppressed.

[0048] Although the vehicle rear seat structure 10 according to the embodiment has been described above, it goes without saying that the present invention can be embodied in various forms without departing from the spirit and scope of the present invention. For example, in the above embodiment, the protrusion 24 and the mounting bracket 22 are provided on the upper surface of the battery unit 14, and the base 12 is shaped to avoid the protrusion 24 and the mounting bracket 22, but this is not limiting. When a component such as a fan is provided on the upper surface of the battery unit 14, the upper surface of the battery unit 14 is formed unevenly as in the present embodiment, but the same effect as in the present embodiment can be obtained by forming the lower surface of the base 12 in a shape corresponding to the unevenness.

[0049] In the above embodiment, as shown in Fig. 3, a structure in which two rear seats 100 are arranged in the rear of the vehicle V has been described, but the present invention is not limited to this. For example, the present invention may be applied to a structure in which a bench seat is arranged in the rear of the vehicle V. In this case, the upper surface 12A of the base 12 is formed in a shape corresponding to the shape of the underside of the bench seat.

[0050] Furthermore, in the above embodiment, adjacent resin parts are connected by engaging an engaging protrusion formed on one of the adjacent resin parts with an engaging groove formed on the other adjacent resin part, as shown in Fig. 2, but this is not limiting and other structures may be adopted. For example, adjacent resin parts may be mechanically fastened to each other with bolts and nuts, or may be joined with an adhesive, etc. [Explanation of symbols]

[0051] 10 Vehicle rear seat structure 12 Pedestal 12A top 12B Side wall part 12C Recess 14 Battery unit 24 Convex part 30 First Resin Parts 32 Second resin part 34 Third resin parts 36 Fourth resin part 100 rear seats V vehicle

Claims

1. The rear seats are located at the rear of the vehicle interior, a battery unit disposed below the rear seat; a resin base provided between the rear seat and the battery unit, the base having a thickness direction in the vehicle vertical direction and an upper surface formed in a shape that follows the rear seat; and the base is formed by connecting a plurality of resin parts in the vehicle width direction, and upper surfaces of the resin parts are connected by a continuous curved surface, The vehicle rear seat structure, wherein the upper surface of the base is formed as a smooth curved surface overall so that recesses are formed on the left and right sides.

2. The vehicle rear seat structure according to claim 1 , wherein the base includes a side wall portion that covers the entire side surface of the battery unit from the outer side in the vehicle width direction.

3. The vehicle rear seat structure according to claim 1 , wherein a recess is formed on the lower surface of the base, the recess corresponding to a protrusion formed on the upper surface of the battery unit.

4. A vehicle having the vehicle rear seat structure according to any one of claims 1 to 3.

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