JP6838309B2 - Vehicle floor panel structure - Google Patents

Description

The present invention relates to a vehicle floor panel structure including floor panels constituting the floor surface of the vehicle.

The floor surface of the vehicle is composed of floor panels (for example, Patent Document 1). If the floor panel vibrates, for example, during traveling, it may cause noise in the vehicle interior. Therefore, the floor panel is required to have high rigidity in order to suppress noise caused by vibration.

In Patent Document 1, when a load is applied, the floor side members arranged on the outside in the vehicle width direction of the floor panel are deformed by the load to absorb the load, thereby improving the rigidity of the floor panel. There is. Further, in the structure of Patent Document 1, a bead extending in the vehicle width direction is provided on the floor panel. Thereby, the rigidity of the floor panel can be further improved.

Japanese Unexamined Patent Publication No. 2013-107582

The means for providing the bead as in Patent Document 1 is an extremely useful means because the rigidity can be improved without adding a component for reinforcement. However, according to Patent Document 1, the bead is in a stretched state with respect to the load applied in the front-rear direction of the vehicle, so that a high reinforcing effect can be obtained, but the reinforcing effect of the bead is obtained with respect to the load applied in the vehicle width direction. Hard to get. Therefore, improvements are required to further increase the rigidity of the floor panel.

In view of these problems, the present invention can further improve the rigidity of the floor panel without adding reinforcing parts, and can further reduce noise caused by vibration during traveling or the like. It is an object of the present invention to provide a floor panel structure for a vehicle.

In order to solve the above problems, a typical configuration of the vehicle floor panel structure according to the present invention is a vehicle floor panel structure including a floor panel constituting the vehicle floor surface, and the vehicle floor panel structure is further described. , A cross member that extends on the floor panel in the vehicle width direction, a center tunnel that is formed in the center of the floor panel in the vehicle width direction and rises inward in the vehicle front-rear direction, and a floor panel that is in the vehicle width direction from the center tunnel. A bead that is formed on the outside and extends from the front end to the rear end of the floor panel so as to intersect the cross member, and is formed in the area of the floor panel that is partitioned by the bead and the cross member. It is characterized by having a bulging portion that bulges downward.

According to the above configuration, the bead extending longitudinally in the vehicle front-rear direction can increase the rigidity of the floor panel with respect to the load applied in the vehicle front-rear direction. In particular, by forming the bead in the region outside the vehicle width direction from the center tunnel, unevenness can be provided in the conventionally flat region, and the rigidity of the floor panel can be improved. Since the beads intersect with the cross member, the rigidity of the floor panel with respect to the load applied in the vehicle width direction can be increased. Therefore, it is possible to provide a floor panel having improved rigidity against a load from more directions.

Further, in the above configuration, a bulge is formed in a region partitioned by a bead and a cross member. As a result, the region where the bead is not formed is not flat, and the bulging portion has irregularities. As a result, it is possible to increase the rigidity in the region where the bead is not formed and suppress the occurrence of vibration in such a region.

It is preferable that the inner edge of the bulging portion in the vehicle width direction is continuous with the bead. As a result, no bent portion is generated between the bulging portion and the bead. Therefore, it is possible to prevent the occurrence of a load concentration portion and further improve the rigidity of the floor panel.

The vehicle floor panel structure further includes a frame member extending in the vehicle front-rear direction below the floor panel, and the bead has the same width as the width of the frame member in the vehicle width direction and overlaps the frame member in upward view. It is good. According to such a configuration, the bead is arranged above the frame member. Therefore, it is possible to secure a good clearance between the frame member and the floor panel, and it is possible to prevent the generation of noise due to their contact.

According to the present invention, it is possible to further improve the rigidity of the floor panel without adding reinforcing parts, and it is possible to further reduce the noise caused by vibration during traveling or the like. The structure can be provided.

It is a figure which illustrates the vehicle which has the floor panel structure for a vehicle which concerns on this embodiment. It is a detailed view of the floor panel of this embodiment. It is sectional drawing of the floor panel of FIG.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in such an embodiment are merely examples for facilitating the understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are designated by the same reference numerals to omit duplicate description, and elements not directly related to the present invention are not shown. To do.

FIG. 1 is a diagram illustrating a vehicle 100a provided with a vehicle floor panel structure (hereinafter, referred to as a floor panel structure 100) according to the present embodiment. FIG. 1A illustrates a state in which the vehicle 100a is observed from above, and FIG. 1B illustrates a state in which the vehicle 100a is observed from below. In all the figures of the present application, the reference numerals U, D, L, R, FR, and RR represent the vertical, horizontal, horizontal, and front-rear directions of the vehicle, respectively.

As shown in FIG. 1A, the floor panel structure 100 of the present embodiment includes a floor panel 110 that constitutes a floor surface of the vehicle 100a. As shown in FIG. 1B, below the floor panel 110, a pair of frame members 102a and 102b extending in the front-rear direction of the vehicle are arranged in the vehicle width direction. The vehicle 100a of the present embodiment is a frame vehicle having a frame structure including such frame members 102a and 102b and an upper body 104 arranged above the frame members 102a and 102b.

FIG. 2 is a detailed view of the floor panel 110 of the present embodiment, showing a state in which the floor panel 110 is observed from above. 3 is a cross-sectional view of FIG. 2, FIG. 3 (a) is a cross-sectional view taken along the line AA of FIG. 2, and FIG. 3 (b) is an enlarged cross-sectional view of FIG. 3 (a). The floor panel 110 has a symmetrical shape. For ease of understanding, FIG. 2 shows a state in which the floor panel 110 is transparent to a region on the right side of the center tunnel 112, which will be described later.

As shown in FIG. 2, a center tunnel 112 extending in the vehicle front-rear direction is formed at the center of the floor panel 110 of the present embodiment in the vehicle width direction. As shown in FIG. 3, the center tunnel 112 is raised inward of the vehicle. As a result, it is possible to secure a space for arranging vehicle-mounted parts and the like (not shown) inside the center tunnel 112, and to increase the rigidity of the floor panel 110 near the center in the vehicle width direction.

As shown in FIG. 1A, side sills 106a and 106b extending in the vehicle front-rear direction are arranged in pairs on the outside of the floor panel 110 in the vehicle width direction. As shown in FIG. 2, cross members 108a and 108b extending in the vehicle width direction are arranged between the side sill 106a (see FIG. 1A) and the center tunnel 112 on the floor panel 110.

As a feature of the present embodiment, the vehicle 100a includes a bead 114 formed on the floor panel 110 and bulging portions 116a, 116b, 116c, and 116d. As shown in FIG. 2, of the floor panel 110, a bead 114 extending from the front end to the rear end of the floor panel is formed on the outside of the center tunnel 112 in the vehicle width direction so as to intersect the cross members 108a and 108b. Has been done. As shown in FIG. 3A, the bead 114 bulges upward.

According to the above configuration, the bead 114 extending longitudinally in the vehicle front-rear direction can increase the rigidity of the floor panel 110 with respect to the load applied in the vehicle front-rear direction and suppress the deformation of the floor panel 110. In particular, by forming the bead 114 in the region outside the vehicle width direction from the center tunnel 112, unevenness can be provided in the conventionally flat region, and the rigidity can be improved.

Further, in the present embodiment, the bead 114 is provided between the center tunnel 112 and the side sill 106a (see FIG. 1A) in the vehicle width direction, that is, near the intermediate position between the center tunnel 112 and the side edge 110a of the floor panel 110. Have been placed. Thereby, the rigidity of the region between the center tunnel 112 and the side sill 106a can be improved in a well-balanced manner.

Further, in the present embodiment, as described above, the beads 114 intersect with the cross members 108a and 108b, whereby the rigidity against the load applied in the vehicle width direction can be increased, and the floor panel 110 can be viewed from more directions. It is possible to improve the rigidity against the load of.

As shown in FIG. 2, in the floor panel, the bulging portions 116a to 116d are formed in the regions 110b, 110c, and 110d partitioned by the bead 114 and the cross member 108a. As shown in FIG. 3A, the bulging portion 116b bulges downward. As a result, the regions 110b to 110d partitioned by the bead 114 and the cross member 108a are not flat but have uneven surfaces. Therefore, it is possible to increase the rigidity in the region where the bead 114 is not formed and suppress the generation of vibration there.

Further, as shown in FIG. 3B, in the present embodiment, the inner edge of the bulging portion 116b in the vehicle width direction is continuous with the bead 114. As a result, the vicinity of the boundary between the bulging portion 116b and the bead 114 becomes a gently continuous surface, so that no bending portion is generated between them. Therefore, it is possible to prevent the occurrence of a load concentration portion.

Further, in the present embodiment, as shown in FIG. 3B, the bead 114 has the same width W1 as the width W2 in the vehicle width direction of the frame member 102b, and is arranged at a position overlapping the frame member 102b in the upward view. To. As a result, the beads 114 are arranged above the frame member 102b, so that a clearance between them can be suitably secured. Therefore, it is possible to prevent the frame member 102b from coming into contact with the floor panel 110 when the vehicle is running, and to prevent the generation of noise caused by the contact.

Further, according to the above configuration, since the space is formed by the beads 114, the heights of the frame members 102a and 102b can be increased by the height of the space. As a result, the cross-sectional area of the frame members 102a and 102b can be increased, and the rigidity of the frame members 102a and 102b and thus the vehicle 100a can be increased.

Further, in the present embodiment, as shown in FIG. 3B, the lower end of the bulging portion 116b is located at the same height as the upper surface 102c of the frame member 102b. This makes it possible to prevent the side surface of the frame member 102b from coming into contact with the bulging portion 116b. Further, in the region other than the region where the bead 114 is formed, the height at which the bead 114 is formed is lowered to the same position as the upper surface 102c of the frame member 102b. As a result, the mounting position of the floor panel 110 and thus the position of the center of gravity of the vehicle 100a are lowered, so that the vehicle performance can be improved.

Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such examples. It is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the claims, which naturally belong to the technical scope of the present invention. Understood.

The present invention can be used in a vehicle floor panel structure including a floor panel constituting the floor surface of the vehicle.

100 ... Floor panel structure, 100a ... Vehicle, 102a ... Frame member, 102b ... Frame member, 102c ... Top surface, 104 ... Upper body, 106a ... Side sill, 106b ... Side sill, 108a ... Cross member, 108b ... Cross member, 110 ... Floor Panel, 110a ... side edge, 110b ... region, 110c ... region, 110d ... region, 112 ... center tunnel, 114 ... bead, 116a ... bulge, 116b ... bulge, 116c ... bulge, 116d ... bulge Department

Claims (3)

In a vehicle floor panel structure including a floor panel constituting the floor surface of the vehicle,
The floor panel structure for the vehicle is further enhanced.
A cross member extending in the vehicle width direction on the floor panel and
A center tunnel formed in the center of the floor panel in the vehicle width direction and raised inward in the vehicle front-rear direction, and a center tunnel.
Among the floor panels, a bead that is formed outside the center tunnel in the vehicle width direction and bulges upward from the front end to the rear end of the floor panel so as to intersect the cross member.
A bulging portion formed in a region of the floor panel partitioned by the bead and the cross member and bulging downward, and a bulging portion .
A frame member extending in the front-rear direction of the vehicle, which is arranged below the floor panel and is separated from the floor panel, is provided.
The inner edge of the bulge in the vehicle width direction is adjacent to the bead,
A vehicle floor panel structure characterized in that the bead overlaps with the frame member when viewed upward. The bead overlaps the frame member in the front-rear direction.
The vehicle floor panel structure according to claim 1, wherein the vehicle rear end side of the bead is arranged outside in the vehicle width direction with respect to the vehicle front end side. The rear end side of the vehicle with respect to the cross member of the bead is arranged outside in the vehicle width direction with respect to the front end side of the vehicle.
The vehicle floor panel structure according to claim 1 or 2, wherein the cross member and the bulging portion are adjacent to each other.

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