Vehicle

Abstract

To provide a technology for increasing rigidity at joint positions of seat brackets.SOLUTION: A vehicle comprises: a floor panel; a center tunnel that extends in a vehicle longitudinal direction in a central part of a vehicle width direction of the floor panel, and projects upward from the floor panel; cross members that pass and extend above the floor panel and the center tunnel; a reinforcement member that is overlapped with the cross members in the vehicle width direction, and is disposed across the center tunnel; and seat brackets for attaching a seat to the cross members. The seat brackets may be overlapped with and joined to the reinforcement member and the cross members at positions where the reinforcement member and the cross members overlap each other.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The technology disclosed in this specification relates to a vehicle. [Background technology]

[0002] Cited Document 1 discloses a vehicle in which a cross member is disposed on a floor panel. The cross member is divided in the vehicle width direction by a center tunnel located in the center of the floor panel in the vehicle width direction. A seat bracket is attached to the cross member. The seat bracket is provided with a joint piece that is joined to the cross member and a joint piece that is joined to the center tunnel, separately. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2021-160511 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned technology, the seat bracket itself must be reinforced to ensure rigidity at the joining position of the seat bracket.

[0005] The present specification provides a technique for increasing the rigidity at the joining position of a seat bracket. [Means for solving the problem]

[0006] The technology disclosed in this specification relates to a vehicle, the vehicle including a floor panel, a center tunnel extending in a vehicle front-rear direction at a center portion of the floor panel in a vehicle width direction and protruding upward from the floor panel, a cross member extending above the floor panel and the center tunnel, a reinforcing member overlapping the cross member in the vehicle width direction and disposed across the center tunnel, and a seat bracket for attaching a seat to the cross member, the seat bracket being joined to and overlapping the reinforcing member and the cross member at a position where the reinforcing member and the cross member overlap.

[0007] According to this configuration, at the joining position where the seat bracket is joined to the cross member and the reinforcing member, the cross member and the reinforcing member overlap, thereby increasing the rigidity at the joining position of the seat bracket. [Brief description of the drawings]

[0008] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] 3 is a cross-sectional view taken along line III-III of FIG. 2, excluding the floor panel. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] 1 is a perspective view of a vehicle 10 seen from above. The vehicle 10 constitutes the front and bottom of the passenger compartment of an electric vehicle where passengers are located, and the bottom of a luggage compartment located at the rear of the passenger compartment. The vehicle 10 may be an electric vehicle equipped with a drive motor and a battery, or may be an automobile having an internal combustion engine.

[0010] The vehicle 10 includes a dash panel 12, a center tunnel 15, a pair of rockers 16, 16, a pair of rocker rears 18, 18, a floor panel 20, a rear floor section 30, cross members 22, 23, a rear cross member 34, a seat mounting section 50, and a reinforcing member 60 (see FIG. 2). In the drawings, the relative positions of the components 12, 15, 16, 18, 20, 30, 22, 23, 34, 50, 60 are properly shown, but the shapes of the seating surfaces and openings for mounting parts, beads for reinforcing the panels, etc. are omitted. In the vehicle 10, the pair of rockers 16, 16, the pair of rocker rears 18, 18, the cross members 22, 23, and the rear cross member 34 form a framework.

[0011] The dash panel 12 is disposed at the front edge of the vehicle interior, and separates the vehicle interior from a front compartment in which a power control unit and the like are disposed. A center tunnel 15 is attached to the center portion 12a of the dash panel 12 in the vehicle width direction W. The center tunnel 15 includes a pair of side plates 15a and an upper plate 15b. The pair of side plates 15a and the upper plate 15b are made of a single metal plate. The upper plate 15b extends from the center portion 12a toward the rear in the vehicle front-rear direction L while inclining downward. The upper plate 15b extends parallel to the front-rear direction L at a middle position in the front-rear direction (more specifically, a position rearward of a cross member 22 described later). A pair of side plates 15a are disposed at both ends of the upper plate 15b in the width direction W, with a bent portion sandwiched therebetween. The center tunnel 15 communicates with the front compartment via a lower portion of the center portion 12a of the dash panel 12.

[0012] A floor panel 20 is disposed on each side of the center tunnel 15 in the width direction W. The floor panel 20 constitutes the front portion of the floor surface of the vehicle interior. The floor panel 20 is divided into left and right floor sections 20a, 20b. The left and right floor sections 20a, 20b are attached to the center tunnel 15. The center tunnel 15 protrudes upward from the floor panel 20 and bulges out.

[0013] A pair of rockers 16, 16 are disposed at both ends of the floor panel 20 in the width direction W. The front ends of each of the pair of rockers 16, 16 are disposed at positions where the dash panel 12 and the floor panel 20 are joined at both ends in the width direction W. The rear ends of each of the pair of rockers 16, 16 extend rearward beyond the rear end of the floor panel 20.

[0014] Two cross members 22, 23 are disposed between the pair of rockers 16, 16. The two cross members 22, 23 are placed on the floor panel 20 and the center tunnel 15 with a gap between them in the front-rear direction L. Each of the cross members 22, 23 is spanned across the pair of rockers 16, 16. Therefore, each of the cross members 22, 23 is disposed linearly between the pair of rockers 16, 16 without interruption. Each of the cross members 22, 23 is formed by bending a single flat plate so that at least four bent portions extend in the width direction W. More specifically, the cross members 22, 23 have a cross-sectional shape in a cross section parallel to the front-rear direction L that includes an upper plate, a pair of side plates bent and extending downward from the upper plate, and flanges bent and extending from each of the side plates.

[0015] As shown in FIG. 2, the reinforcing member 60 is attached to the cross member 22. The reinforcing member 60 is made by bending a single flat plate, and is arranged along the lower surface of the upper plate and the inner surface of the side plate of the cross member 22. The reinforcing member 60 may have a plate thickness thinner than the cross member 22, or may have a plate thickness equal to or greater than that of the cross member 22. The reinforcing member 60 is arranged across the center tunnel 15 in the width direction W. Specifically, the left end of the reinforcing member 60 is located to the left of the center tunnel 15, the right end of the reinforcing member 60 is located to the right of the center tunnel 15, and the middle part of the reinforcing member 60 passes above the center tunnel 15 to connect the left and right ends. The reinforcing member 60 has a cross-sectional shape in a cross section parallel to the front-rear direction L, which includes an upper plate and a pair of side plates that bend and extend downward from the upper plate.

[0016] 1, a seat mounting portion 50 to which a driver's seat disposed in the vehicle compartment and a seat disposed next to the driver are attached is disposed on the cross members 22, 23. The seat mounting portion 50 includes seat brackets 52, 52, 54, 54 attached to the cross member 22, and seat brackets 56, 56, 58, 58 attached to the cross member 23.

[0017] 2, the seat bracket 52 overlaps with a portion of the cross member 22 that slopes from the floor portion 20a toward the center tunnel 15. The seat bracket 52 has an upper surface 52b having a plurality of openings 52a, 52a for fastening to the seat, a side surface 52c extending downward from the upper surface 52b, and an adhesive piece 52d extending along the upper surface of the cross member 22 at the lower end of the side surface 52c.

[0018] Below the seat bracket 52, the reinforcing member 60 is disposed overlapping with the cross member 22 in between. The seat bracket 52 is joined to the cross member 22 and the reinforcing member 60 by welding at a plurality of welding points WP disposed on each of the side surface 52c and the adhesive piece 52d. Note that a welding point similar to that on the side surface 52c is also disposed on the side surface of the seat bracket 52 facing the front of the vehicle. As shown in FIG. 3, at the welding point WP, the seat bracket 52, the cross member 22, and the reinforcing member 60 are joined in an overlapping manner. Similarly, at the welding point on the side surface 52c, the seat bracket 52, the cross member 22, and the reinforcing member 60 are joined in an overlapping manner.

[0019] According to this configuration, at the welding points WP where the seat bracket 52 is joined to the cross member 22 and the reinforcing member 60, the cross member 22 and the reinforcing member 60 overlap, so that the rigidity of the welding points WP of the seat bracket 52 can be increased. This eliminates the need to reinforce the seat bracket 52 itself to ensure rigidity at the welding points WP. In a modified example, at least some of the welding points WP may be fastened by fastening members such as bolts in a state where the seat bracket 52, the cross member 22, and the reinforcing member 60 overlap. A reinforcing member is also disposed on the cross member 23, and the relationship between the cross member 23, the seat bracket 56, and the reinforcing member may be the same as that between the seat bracket 52, the cross member 22, and the reinforcing member 60.

[0020] Furthermore, the height of the cross member 22 is restricted to be lower at the position where it passes over the center tunnel 15 compared to other positions. The cross member 22 can be reinforced by overlapping and joining the reinforcing member 60 and the seat bracket 52.

[0021] Although specific examples of the present invention have been described above in detail, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and variations of the specific examples exemplified above. The technical elements described in this specification or drawings exhibit technical utility alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology exemplified in this specification or drawings can achieve multiple objectives simultaneously, and achieving one of these objectives is itself technically useful. [Explanation of symbols]

[0022] 10: vehicle, 15: center tunnel, 16: rocker, 18: rocker rear, 20: floor panel, 22, 23: cross member, 30: rear floor portion, 34: rear cross member, 50: seat mounting portion, 52, 54, 56, 58: seat bracket, 60: reinforcing member

Claims

[Claim 1] Floor panels and a center tunnel extending in a front-rear direction of the vehicle at a central portion of the floor panel in a vehicle width direction and protruding upward from the floor panel; A cross member extending through the floor panel and the center tunnel; A reinforcing member overlapping the cross member in the vehicle width direction and arranged across the center tunnel; a seat bracket for attaching a seat to the cross member; A vehicle, wherein the seat bracket is joined to and overlaps the reinforcing member and the cross member at a position where the reinforcing member and the cross member overlap.

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