JP7245593B2 - floor panel - Google Patents

Description

The present invention relates to a floor panel forming the underside of a vehicle.

Patent Literature 1 discloses a vehicle body lower structure including a floor panel, a rocker, and an upper panel member (side member). The rocker extends along the front-rear direction of the vehicle at the outer end portion in the vehicle width direction. The front portion of the upper panel member extends along the vehicle front-rear direction inside the rocker in the vehicle width direction. An outer end portion of the floor panel in the vehicle width direction is joined to the rocker, and an upper surface portion of the floor panel on the vehicle inner side of the rocker is joined to the front portion of the upper panel member. A plurality of beads are provided in the area of the floor panel between the rocker and the front portion of the upper panel member. Each bead is composed of a protrusion projecting upward from the floor panel. The longitudinal direction of each bead is slanted in a direction orthogonal to the acting direction of the shear force that tends to shear-deform the floor panel in the event of a frontal collision of the vehicle. Specifically, the longitudinal direction of each bead is inclined toward the front side of the vehicle from the rocker side toward the upper panel member side. Each bead is independent of the other.

JP-A-2005-219521

During a frontal collision of the vehicle, a rearward load of the vehicle acts on the rockers and the side members. The rearward displacement of the side member due to this load is larger than the rearward displacement of the rocker. Therefore, in the region between the rocker and the side member in the floor panel, the vehicle interior side is displaced rearward relative to the vehicle exterior side.

By providing the inclined beads on the floor panel as described above, it is easy to suppress the displacement. However, since the beads are independent and not connected to each other as described above, the floor panel may be deformed starting from the space between the beads during normal running. Deformation of the floor panel increases noise and vibration.

One of the objects of the present invention is to provide a floor panel that is hard to deform and easy to reduce noise and vibration.

A sheet according to one aspect of the present invention includes
A floor panel fixed to a side member extending in the vehicle length direction and a rocker extending in the vehicle length direction outside the side member,
a specific region provided between the side member and the rocker in a concave shape that is recessed downward of the vehicle or in a convex shape that projects upwardly of the vehicle;
A plurality of bead portions provided in the specific region in a concave shape that is depressed downward of the vehicle or in a convex shape that projects upwardly of the vehicle,
The specific region is
a vehicle-exterior edge provided on the vehicle exterior;
a vehicle-interior edge portion provided on the vehicle-interior side;
The plurality of bead portions have a first bead portion and a second bead portion that are arranged in parallel in the vehicle length direction at intervals and extend from the rear side of the vehicle to the front side of the vehicle as it goes from the outside of the vehicle to the inside of the vehicle,
The first bead portion is
a base connected to the outer edge of the vehicle;
and a tip that is not connected to the vehicle inner edge,
The second bead portion is
a base connected to the vehicle inner side edge;
and a tip portion that is not connected to the outer edge of the vehicle,
The tip portion of the first bead portion and the tip portion of the second bead portion overlap in the vehicle length direction in a plan view.

The floor panel has a concave or convex specific region and a plurality of bead portions provided in the specific region in a concave or convex shape. Therefore, the floor panel can be enhanced in rigidity.

Also, the plurality of beads has a first bead and a second bead extending in the direction described above. Therefore, the first bead portion and the second bead portion can intersect with respect to the displacement described above during a frontal collision of the vehicle in the area of the floor panel between the rocker and the side member. Therefore, the floor panel is less likely to deform during a frontal collision of the vehicle.

Further, the first bead portion has a base portion connected to the vehicle outer edge portion, and the second bead portion has a base portion connected to the vehicle inner edge portion. That is, the base portion of the first bead portion and the base portion of the second bead portion are not aligned on the same straight line in the vehicle length direction, and the first bead portion and the second bead portion are connected via the ridgeline of the specific region. there is The first bead portion has a tip portion that does not connect to the vehicle inner edge portion, the second bead portion has a tip portion that does not connect to the vehicle outer edge portion, and the tip portion of the first bead portion and the second bead portion The tip portion overlaps in the vehicle length direction in a plan view. That is, the tip of the first bead portion and the tip of the second bead portion are located on different side edge portions and are difficult to align on the same straight line in the vehicle length direction. In this way, the first bead portion and the second bead portion are connected via the ridgeline of the specific region, and the base portion of the first bead portion and the base portion of the second bead portion are on the same straight line in the vehicle length direction. Since it is difficult to align the tip of the first bead portion and the tip of the second bead portion on the same straight line in the vehicle length direction, it is difficult for the floor panel to form a point that becomes a starting point of deformation. That is, the floor panel is less likely to deform during normal running of the vehicle. Therefore, the floor panel tends to reduce noise and vibration during normal running of the vehicle.

The first bead portion has a tip portion that does not connect to the vehicle inner edge portion, and the second bead portion has a tip portion that does not connect to the vehicle outer edge portion. Therefore, the floor panel easily forms a discharge channel for a liquid such as a coating liquid, and the liquid is less likely to accumulate in a specific area.

By providing the specific region and the specific bead portion as described above, the floor panel is difficult to deform and easy to reduce noise and vibration, so cost reduction, weight reduction, and productivity improvement can be expected. .

1 is a perspective view showing a floor panel according to an embodiment; FIG. FIG. 2 is a cross-sectional view showing a state in which the floor panel is cut along line (II)-(II) in FIG.

An embodiment of the floor panel of the present invention will be described with reference to FIGS. 1 and 2. FIG. In the figure, "FR" is the front of the vehicle equipped with the floor panel 1 according to the embodiment, "RR" is the rear, "LH" is the left, "RH" is the right, "UP" is the top, and "LWR" is the front. Shows downwards. "OUT" indicates the outside of the vehicle, and "IN" indicates the inside.

<<Embodiment>>
[Floor panel]
A floor panel 1 according to the embodiment is a plate-like member that forms the bottom surface of a vehicle. This floor panel 1 is fixed to side members 11 and rockers 12 . The side member 11 extends in the vehicle length direction. The side member 11 is provided inside the vehicle relative to the rocker 12 . Although not shown, the front end of the side member 11 is located on the front side of the vehicle with respect to the front end of the rocker 12 . The rocker 12 forms the lower edge of the side door opening of the vehicle. The rocker 12 extends in the vehicle length direction. The rocker 12 is provided at the outer end of the vehicle. One of the features of the floor panel 1 of this embodiment is that it has a specific area 2 provided between the side member 11 and the rocker 12 and a specific bead portion 3 provided in the specific area 2 . Each configuration will be described in detail below. FIG. 2 shows only a cross section of the floor panel 1 for convenience of explanation.

[Specific area]
Specific region 2 is provided between side member 11 and rocker 12 . FIG. 1 shows a specific area 2 between a side member 11 and a rocker 12 on the front side of the vehicle. The specific area 2 of this embodiment is provided in a concave shape that is recessed toward the lower side of the vehicle. The specific area 2 is preferably curved so that the lower side of the vehicle is on the outer side of the bend (Fig. 2). Since the specific region 2 is curved, the rigidity of the floor panel 1 tends to increase. Note that, unlike the present embodiment, the specific region 2 may be provided in a convex shape that protrudes upward from the vehicle. In that case, the specific region 2 is preferably curved so that the upper side of the vehicle is on the outer side of the curve. The specific region 2 can be formed by pressing the floor panel 1 .

The planar shape of the specific region 2 is generally rectangular in this embodiment. The planar shape refers to the shape of the floor panel 1 when viewed from above the vehicle. The specific region 2 has a vehicle-exterior edge 21 , a vehicle-interior edge 22 , a front edge 23 , and a rear edge 24 . The vehicle outer edge 21 forms an edge of the opening edge of the recess on the rocker 12 side. The vehicle outer edge 21 is positioned on the rocker 12 side and extends in the vehicle length direction. The vehicle inner side edge portion 22 forms an edge on the side member 11 side of the opening edge of the recess. The vehicle inner side edge portion 22 is positioned on the side member 11 side and extends in the vehicle length direction. The front edge portion 23 forms the edge of the opening edge of the recess on the front side of the vehicle. The front edge portion 23 is positioned on the front side of the vehicle and extends in the vehicle width direction. The front edge portion 23 connects the front end of the vehicle outer edge portion 21 and the front end of the vehicle inner edge portion 22 . The rear edge portion 24 forms the edge of the opening edge of the recess on the rear side of the vehicle. The rear edge portion 24 is located on the rear side of the vehicle and extends in the vehicle width direction.

It is preferable that the specific area 2 is provided with a through hole 25 penetrating through the front and back of the floor panel 1 . This through hole 25 can be used to discharge a liquid such as a coating liquid. The through hole 25 may be arranged at a location where a bead, which will be described later, is not provided. When the specific region 2 is curved as in the present embodiment, the location of the through-hole 25 is preferably the lowest position of the curved surface (FIG. 2). In this embodiment, the through hole 25 is arranged on the rear side of the vehicle with respect to the second bead portion 32, which will be described later (FIGS. 1 and 2).

[Bead part]
The beads 3 increase the rigidity of the floor panel 1 (Fig. 1). The bead portion 3 of this embodiment is provided in the specific region 2 in a convex shape that protrudes upward from the vehicle. Note that, unlike the present embodiment, the bead portion 3 may be provided in the specific region 2 in a concave shape that is recessed toward the lower side of the vehicle. The bead portion 3 can be formed by pressing the floor panel 1 in the same manner as the specific region 2 . The number of bead portions 3 is plural. The bead portion 3 has a first bead portion 31 and a second bead portion 32 .

(First bead portion/Second bead portion)
The first bead portion 31 and the second bead portion 32 increase the rigidity of the floor panel 1 . The first bead portion 31 and the second bead portion 32 are arranged side by side with a space therebetween in the vehicle length direction. The first bead portion 31 and the second bead portion 32 of this embodiment are adjacent to each other in the vehicle length direction. That is, no other bead portion is provided between the first bead portion 31 and the second bead portion 32 . The space between the first bead portion 31 and the second bead portion 32 refers to the area between the imaginary line along the longitudinal direction of the first bead portion 31 and the imaginary line along the longitudinal direction of the second bead portion 32. say. The first bead portion 31 and the second bead portion 32 are provided so as to extend from the rear side of the vehicle to the front side of the vehicle as they go from the outside of the vehicle toward the inside of the vehicle. That is, the longitudinal vehicle outer side of the first bead portion 31 and the second bead portion 32 is located on the rear side of the vehicle, and the longitudinal vehicle inner side of the first bead portion 31 and the second bead portion 32 is located on the vehicle front side. It is slanted to position

During a frontal collision of the vehicle, a rearward load of the vehicle acts on the side member 11 and the rocker 12 . Due to the action of this load, the rearward displacement of the side member 11 is usually greater than the rearward displacement of the rocker 12 . At this time, the area between the side member 11 and the rocker 12 in the floor panel 1 is displaced rearward relative to the vehicle outer side. In the floor panel 1 of this embodiment, since the longitudinal direction of the first bead portion 31 and the longitudinal direction of the second bead portion 32 are inclined as described above, they intersect with respect to the displacement described above. Therefore, deformation of the area between the side member 11 and the rocker 12 in the floor panel 1 is likely to be suppressed in the event of a frontal collision of the vehicle. In particular, it is preferable that the longitudinal direction of the first bead portion 31 and the longitudinal direction of the second bead portion 32 are along the direction perpendicular to the displacement. This makes it easier to suppress deformation of the area between the side member 11 and the rocker 12 in the floor panel 1 in the event of a frontal collision of the vehicle.

The longitudinal direction of the first bead portion 31 and the longitudinal direction of the second bead portion 32 are linear in this embodiment. Note that the longitudinal direction of the first bead portion 31 and the longitudinal direction of the second bead portion 32 may be curved unlike the present embodiment. Although the longitudinal direction of the linear first bead portion 31 and the longitudinal direction of the linear second bead portion 32 may be non-parallel, they are preferably parallel as in the present embodiment. This makes it easier to suppress deformation of the area between the side member 11 and the rocker 12 in the floor panel 1 in the event of a frontal collision of the vehicle.

The first bead portion 31 extends from the vehicle-exterior edge portion 21 toward the vehicle-interior edge portion 22 . The first bead portion 31 has a base portion 311 and a tip portion 312 . The base portion 311 is continuously connected to the vehicle outer edge portion 21 . The tip portion 312 does not connect to the vehicle inner side edge portion 22 . That is, a gap is provided between the tip portion 312 and the vehicle inner side edge portion 22 . The cross-sectional shape of the first bead portion 31 is hat-shaped.

The second bead portion 32 extends from the vehicle inner edge portion 22 toward the vehicle outer edge portion 21 side. The second bead portion 32 has a base portion 321 and a tip portion 322 . The base portion 321 is continuously connected to the vehicle inner side edge portion 22 . The tip portion 322 is not connected to the vehicle outer edge portion 21 . That is, a gap is provided between the tip portion 322 and the vehicle outer edge portion 21 . The cross-sectional shape of the second bead portion 32 is hat-shaped, like the first bead portion 31 (FIG. 2).

The lengths of the first bead portion 31 and the second bead portion 32 should be such that the tip portion 312 of the first bead portion 31 and the tip portion 322 of the second bead portion 32 overlap in the vehicle length direction in plan view. Just do it. The tip portion 312 of the first bead portion 31 and the tip portion 322 of the second bead portion 32 overlap in the vehicle length direction in plan view. Overlapping in the vehicle length direction in plan view means that the tip portion 312 of the first bead portion 31 is positioned between the base portion 321 and the tip portion 322 of the second bead portion 32 . That is, the tip portion 322 of the second bead portion 32 is also located between the base portion 311 and the tip portion 312 of the first bead portion 31 .

The number of the first bead portions 31 and the number of the second bead portions 32 should be one or more. The number of first bead portions 31 and the number of second bead portions 32 may be the same or different. The number of the first bead portions 31 and the number of the second bead portions 32 in this embodiment are the same, and each is one. Note that unlike the present embodiment, when the number of at least one of the first bead portions 31 and the second bead portions 32 is plural, the first bead portions 31 and the second bead portions 32 are alternately arranged in parallel in the vehicle length direction. set as follows.

(Other bead parts)
The bead portion 3 may have a third bead portion 33 in addition to the first bead portion 31 and the second bead portion 32 . The third bead portion 33 is provided in the specific region 2 in a concave shape that is depressed downward of the vehicle or a convex shape that protrudes upwardly of the vehicle. The longitudinal direction of the third bead portion 33 may be along the same direction as the first bead portion 31 and the like, or may be along a direction different from that of the first bead portion 31, such as the vehicle width direction. . The third bead portion 33 extends from one of the vehicle outer edge portion 21 and the vehicle inner edge portion 22 toward the other side. That is, the third bead portion 33 has a base portion continuously connected to one of the vehicle outer edge portion 21 and the vehicle inner edge portion 22 and a tip portion not connected to the other of the vehicle outer edge portion 21 and the vehicle inner edge portion 22 . The tip portion of the third bead portion 33 is the tip portion of the bead portion extending from the side edge portion of the first bead portion 31 and the second bead portion 32 opposite to the side edge portion to which the third bead portion 33 is connected. Do not overlap in the vehicle length direction.

[Effect]
The floor panel 1 of this embodiment can have the following effects.

(1) The first bead portion 31 and the second bead portion 32 extend from the rear side of the vehicle to the front side of the vehicle as they go from the outside of the vehicle toward the inside of the vehicle. That is, the first bead portion 31 and the second bead portion 32 are provided so as to intersect with respect to the displacement of the area between the side member 11 and the rocker 12 of the floor panel 1 during a frontal collision of the vehicle. there is Therefore, the area between the side member 11 and the rocker 12 in the floor panel 1 is less likely to deform in the event of a frontal collision of the vehicle.

(2) The base portion 311 of the first bead portion 31 is connected to the vehicle outer edge portion 21, and the base portion 321 of the second bead portion 32 is connected to the vehicle inner edge portion 22, so that the base portion 311 of the first bead portion 31 and the second bead portion 31 The base portion 321 of the bead portion 32 is not aligned on the same straight line in the vehicle length direction. In addition, the first bead portion 31 and the second bead portion 32 are connected in series via the front edge portion 23 and the rear edge portion 24 of the specific region 2 . The tip portion 312 of the first bead portion 31 and the tip portion 322 of the second bead portion 32 overlap in the vehicle length direction in a plan view, and the tip of the first bead portion 31 and the tip of the second bead portion 32 overlap each other. They are located on different side edges and are difficult to align on the same straight line in the vehicle length direction. Therefore, it is difficult to form a portion that becomes a starting point of deformation. That is, deformation during normal running of the vehicle is less likely to occur. Therefore, noise and vibration are less likely to increase during normal running of the vehicle.

(3) By providing the specific region 2 and the specific bead portion 3 as described above, it is difficult to deform and noise and vibration can be easily reduced, so cost reduction, weight reduction, and productivity improvement can be expected. .

The present invention is not limited to these examples, but is indicated by the scope of the claims, and is intended to include all modifications within the meaning and scope of equivalents of the scope of the claims.

In the above-described embodiment, an example has been described in which the specific region is provided in a concave shape, and the first bead portion and the second bead portion are provided in the specific region in a convex shape. For example, the specific region may be provided in a concave shape, and the first bead portion and the second bead portion may be provided in a concave shape in the specific region. Moreover, the specific region may be provided in a convex shape, and the first bead portion and the second bead portion may be provided in a concave shape in the specific region. Furthermore, the specific region may be provided in a convex shape, and the first bead portion and the second bead portion may be provided in a convex shape in the specific region.

Reference Signs List 1 floor panel 2 specific region 21 outer edge 22 inner edge 23 front edge 24 rear edge 25 through hole 3 bead 31 first bead 311 base 312 tip 32 second bead 321 base 322 tip 33 third bead portion 11 side member 12 rocker

Claims (1)

A floor panel fixed to a side member extending in the vehicle length direction and a rocker extending in the vehicle length direction outside the side member,
a specific region provided between the side member and the rocker in a concave shape that is recessed downward of the vehicle or in a convex shape that projects upwardly of the vehicle;
A plurality of bead portions provided in the specific region in a concave shape that is depressed downward of the vehicle or in a convex shape that projects upwardly of the vehicle,
The specific region is
a vehicle-exterior edge provided on the vehicle exterior;
a vehicle-interior edge portion provided on the vehicle-interior side;
The plurality of bead portions have a first bead portion and a second bead portion that are arranged side by side at intervals in the vehicle length direction and extend from the rear side of the vehicle to the front side of the vehicle as they go from the outside of the vehicle toward the inside of the vehicle,
The first bead portion is
a base connected to the outer edge of the vehicle;
and a tip that is not connected to the vehicle inner edge,
The second bead portion is
a base connected to the vehicle inner side edge;
and a tip portion that is not connected to the outer edge of the vehicle,
The tip portion of the first bead portion and the tip portion of the second bead portion overlap in the vehicle length direction in plan view,
floor panel.

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