JP6232987B2 - Body plastic panel structure - Google Patents

Description

  The present invention relates to a vehicle body resin panel structure.

  2. Description of the Related Art A structure in which a vehicle body floor is composed of two upper and lower resin panels and the two upper and lower resin panels are connected by ribs such as a "U" shape has been known (for example, Patent Document 1). reference).

JP 2013-136275 A

  However, in the above configuration, when a shearing force is applied in the opposite direction between the vehicle width direction one end and the other end of the vehicle body floor due to the collision load input by the offset frontal collision of the vehicle, An out-of-plane deformation (distortion) occurs in the vehicle body floor, and there is a risk that the vehicle body floor buckles due to an opening between the upper and lower resin panels (ribs are peeled or broken).

  Therefore, an object of the present invention is to obtain a vehicle body resin panel structure capable of suppressing distortion of a resin panel caused by input of a load.

In order to achieve the above object, a vehicle body resin panel structure according to claim 1 according to the present invention includes a rocker that extends outside the vehicle width direction along the vehicle body front-rear direction and forms a skeleton of the vehicle body, The side member extending in the vehicle longitudinal direction on the inner side in the vehicle width direction of the rocker as viewed, and constituting a skeleton of the vehicle body, a resin panel provided between the rocker and the side member, and the resin A plurality of first convex bead portions formed on one surface side of the panel, extending in a direction intersecting with an extending direction of the rocker and the side member , and formed on one surface side of the resin panel, A plurality of second convex bead portions extending in a direction intersecting with the extending direction of the rocker and the side member and intersecting with the extending direction of the first convex bead portion, and on the other surface side of the resin panel Formed with the first convex bead and the front It is characterized by comprising a longitudinal wall surrounding continuously intersection where the second convex bead portion crossing the circumferential direction of the crossing portion.

According to the invention described in claim 1, the resin panel provided between the rocker and the side members, a plurality of intersecting with the extending direction of the rocker and the side members and extending in a direction intersecting with each other the A vertical wall is formed in which one convex bead portion and a plurality of second convex bead portions are formed, and the vertical wall surrounding the intersection where each first convex bead portion and each second convex bead portion intersect is continuous in the circumferential direction of the intersection. Is formed.

Therefore, even when a collision load is input to the rocker or the side member and a shearing force is applied in the opposite direction between the rocker and the side member , the shearing force is applied to the first convex bead portion or the second convex bead. It is suppressed by the part. And since the cross | intersection part of a 1st convex bead part and a 2nd convex bead part is reinforced by the vertical wall, the out-of-plane deformation | transformation of a resin panel is suppressed. That is, according to the present invention, the distortion of the resin panel caused by the input of the load is suppressed.

  The vehicle body resin panel structure according to claim 2 is the vehicle body resin panel structure according to claim 1, wherein the vertical wall is formed perpendicular to the resin panel. .

  According to the invention described in claim 2, the vertical wall is formed perpendicular to the resin panel. Therefore, the strength (rigidity) of the resin panel at the intersection is improved, and the distortion of the resin panel caused by the input of the load is further suppressed. Note that “vertical” in the present invention includes both an accurate vertical and a substantially vertical slightly tilted from the accurate vertical.

  The vehicle body resin panel structure according to claim 3 is the vehicle body resin panel structure according to claim 1 or 2, wherein the thickness of the vertical wall is at least equal to the thickness of the resin panel. It is characterized by having.

  According to the invention described in claim 3, the thickness of the vertical wall is at least equal to the thickness of the resin panel. Therefore, the strength (rigidity) of the resin panel at the intersection is improved, and the distortion of the resin panel caused by the input of the load is further suppressed.

  The vehicle body resin panel structure according to claim 4 is the vehicle body resin panel structure according to any one of claims 1 to 3, wherein the height of the vertical wall is the first convex bead. And the depth of the second convex bead portion.

  According to invention of Claim 4, the height of a vertical wall is made equivalent to the depth of a 1st convex bead part and a 2nd convex bead part. Therefore, the strength (rigidity) of the resin panel at the intersection is further improved, and the distortion of the resin panel caused by the input of the load is further suppressed.

  As described above, according to the first aspect of the invention, it is possible to suppress the distortion of the resin panel caused by the input of a load.

  According to the invention which concerns on Claim 2, distortion of the resin panel which generate | occur | produces by the input of a load can further be suppressed.

  According to the invention which concerns on Claim 3, distortion of the resin panel which generate | occur | produces by the input of a load can further be suppressed.

  According to the invention which concerns on Claim 4, distortion of the resin panel which generate | occur | produces by the input of a load can further be suppressed.

It is a bottom view which shows the vehicle body resin panel structure which concerns on this embodiment. It is a top view which expands and shows a part of resin panel concerning this embodiment. FIG. 3 is a cross-sectional view taken along line X-X in FIG. 2. It is a perspective view which expands and shows the surface side of the resin panel which concerns on this embodiment. It is a perspective view which expands and shows the back surface side of the resin panel which concerns on this embodiment. (A) It is a bottom view which shows the vehicle body resin panel structure concerning a comparative example. (B) It is a perspective view which shows distortion of the resin panel which concerns on a comparative example.

  Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. For convenience of explanation, an arrow UP appropriately shown in each drawing is an upward direction of the vehicle body, an arrow FR is a forward direction of the vehicle body, and an arrow OUT is an outer side of the vehicle width direction. In addition, in the following description, when the front-rear, up-down, left-right directions are indicated without special mention, the front-rear direction of the vehicle body, the up-down direction of the vehicle body, the left-right direction of the vehicle body (the vehicle width direction) To do.

  As shown in FIGS. 1 and 2, on the outer side in the vehicle width direction of the vehicle body 12, a rocker 14 as an example of a first skeleton member that extends along the vehicle body front-rear direction and constitutes the skeleton of the vehicle body 12 is left and right. A pair is provided. As shown in FIG. 3, the rocker 14 includes an outer panel 15 formed in a cross-sectional hat shape that protrudes outward in the vehicle width direction, and an inner panel formed in a cross-sectional hat shape that protrudes inward in the vehicle width direction. 16, and the upper and lower flange portions 15A of the outer panel 15 and the upper and lower flange portions 16A of the inner panel 16 are joined to each other by spot welding to form a closed cross-sectional shape.

  As shown in FIGS. 1 and 2, a front side member as an example of a second skeleton member that extends along the front-rear direction of the vehicle body and constitutes the skeleton of the vehicle body 12 is provided on the front side of the vehicle body 12. 18 is arranged in a pair of left and right. As shown in FIG. 3, the front side member 18 is formed in a hat-shaped cross section that protrudes downward in the vehicle body, and a flange portion 18A that is the upper end of the front side member 18 is spotted on the lower surface of the floor panel 22 to be described later. It is formed in a closed cross-sectional shape by being joined by welding.

  Further, a tunnel portion (not shown) extending in the vehicle longitudinal direction is disposed at the vehicle width direction center portion of the vehicle body 12, and as shown in FIG. 3, the left and right rockers 14 and the tunnel portion are arranged. Between the two, a floor panel 22 constituting the vehicle body floor 20 is installed. That is, the outer end of the floor panel 22 in the vehicle width direction is joined to the lower surface of the inner panel 16 of the rocker 14 by spot welding, and the inner end of the floor panel 22 in the vehicle width direction is joined to the lower surface of the tunnel portion by spot welding. Has been.

  Further, as shown in FIG. 1, the rocker 14 and the front side member 18 are arranged in the vehicle width direction at a predetermined interval in plan view, and the floor between the rocker 14 and the front side member 18 is arranged. On the panel 22, a resin panel 24 that constitutes the vehicle body floor 20 together with the floor panel 22 is provided by being bonded by an adhesive G. The resin panel 24 is formed of a fiber reinforced resin material (FRP), for example, a carbon fiber resin material (CFRP).

  2 to 4, on the surface (upper surface / one surface) side of the resin panel 24 constituting the vehicle body resin panel structure 10, the vehicle body front-rear direction (the rocker 14 and the front side member 18) A plurality of first convex bead portions 26 extending obliquely with respect to the vehicle width direction and the vehicle width direction, and the vehicle body longitudinal direction (extension direction of the rocker 14 and the front side member 18) and the vehicle width direction in plan view. A plurality of second convex bead portions 28 extending obliquely and extending in a direction intersecting with each first convex bead portion 26 are formed.

  That is, each first convex bead portion 26 is formed at a predetermined angle from the front in the vehicle width direction to the rear in the vehicle width direction in plan view, and each second convex bead portion 28 is in the vehicle width direction in plan view. The first convex bead portions 26 and the second convex bead portions 28 intersect with each other in an “X” shape in a plan view. (See FIG. 4). And each 1st convex bead part 26 and each 2nd convex bead part 28 are each formed in the cross-sectional substantially "U" shape of the same width | variety.

  That is, as shown in FIG. 5, a plurality of first groove portions 25 extending obliquely with respect to the vehicle longitudinal direction and the vehicle width direction when viewed from the bottom, are provided on the back surface (lower surface / other surface) side of the resin panel 24. And a plurality of second groove portions 27 extending obliquely with respect to the longitudinal direction of the vehicle body and the vehicle width direction in a bottom view and extending in a direction intersecting with each first groove portion 25 have the same width. Each section is formed in a substantially “U” shape, and each first convex bead portion 26 and each second convex bead portion 28 are formed by each first groove portion 25 and each second groove portion 27. .

  Further, as shown in FIG. 5, a flat plate is formed around the intersection 30 where the first groove 25 (first convex bead 26) and the second groove 27 (second convex bead 28) intersect. The vertical wall 32 is integrally formed. Each vertical wall 32 is formed substantially perpendicular to the resin panel 24 and is formed continuously in the circumferential direction of the intersecting portion 30. That is, each vertical wall 32 is erected at a portion corresponding to four sides of the intersecting portion 30 formed in a rhombus shape or a square shape in a bottom view, and is configured to surround the intersecting portion 30.

  In addition, each vertical wall 32 has a substantially “U” shape (arc shape) whose upper edge portion extends along the first groove portion 25 (first convex bead portion 26) and the second groove portion 27 (second convex bead portion 28). Is formed. Each vertical wall 32 has a first groove portion 25 (first convex bead portion 26) and a second groove portion 27 (second groove) so that the lower edge portion is flush with the lower surface of the resin panel 24. The depth of the convex bead portion 28) is equivalent. Further, the plate thickness of each vertical wall 32 is at least equal to the plate thickness of the resin panel 24. Thereby, the strength (rigidity) of each vertical wall 32 is ensured or improved.

  As shown in FIG. 3, the outer end in the vehicle width direction of the first convex bead portion 26 and the second convex bead portion 28 facing the inner panel 16 of the rocker 14 is a vertical wall 34 equivalent to the vertical wall 32. It is blocked by Similarly, the vehicle width direction inner side ends of the first convex bead portion 26 and the second convex bead portion 28 on the front side member 18 side are also closed by a vertical wall 36 equivalent to the vertical wall 32.

  Next, the operation of the vehicle body resin panel structure 10 configured as described above will be described.

  First, the vehicle body resin panel structure 100 according to the comparative example shown in FIG. 6 will be described. As shown in FIG. 6A, when the vehicle collides with an offset front and a collision load F is input to one of the front side members 18 toward the rear side of the vehicle body, the front side member 18 moves toward the rear side of the vehicle body. Moving. Here, the first convex bead portion 26 and the second convex bead portion 28 are not formed on the resin panel 124 according to the comparative example. Therefore, the resin panel 124 may be subjected to out-of-plane deformation (distortion) due to input of a load.

  More specifically, as shown in FIG. 6 (B), when the front side member 18 moves to the rear side of the vehicle body, the rear inner side end in the vehicle width direction of the resin panel 124 on the front side member 18 side is the rear side of the vehicle body. The front end in the vehicle width direction of the resin panel 124 on the rocker 14 side is relatively pulled toward the front side of the vehicle body. That is, in the resin panel 124, the inner side in the vehicle width direction (front side member 18 side) faces the rear side of the vehicle body, and the outer side in the vehicle width direction (rocker 14 side) goes to the front side of the vehicle body (relatively in the front-back direction). ) A shear force is applied.

  Then, the vehicle width direction inner front end portion of the resin panel 124 on the front side member 18 side is compressed toward the vehicle body rear side, and the vehicle width direction outer rear end portion of the resin panel 124 on the rocker 14 side is relatively relative to the vehicle body. Compressed forward. Therefore, as shown in FIG. 6B, the resin panel 124 undergoes out-of-plane deformation (distortion) due to compression from the vehicle width direction inner front end portion and the vehicle width direction outer rear end portion. That is, the resin panel 124 may be buckled due to the input of a load.

  In contrast, in the resin panel 24 according to the present embodiment, the first convex bead portion 26 and the second convex bead portion 28 are formed, and the intersection between the first convex bead portion 26 and the second convex bead portion 28 is formed. A vertical wall 32 surrounding 30 is integrally formed continuously in the circumferential direction of the intersecting portion 30. Therefore, even if a collision load F directed toward the rear of the vehicle body is input to one of the front side members 18 due to an offset frontal collision of the vehicle, out-of-plane deformation (distortion) hardly occurs in the resin panel 24.

  More specifically, as described above, when the front side member 18 moves to the vehicle body rear side, the vehicle width direction inner front end portion of the resin panel 24 on the front side member 18 side is compressed to the vehicle body rear side, and the rocker 14 The rear end portion in the vehicle width direction of the resin panel 24 on the side is relatively compressed toward the front side of the vehicle body.

  However, the second convex bead portion 28 extends in this compression direction. Therefore, in the resin panel 24, the strength against compressive deformation can be improved. That is, since the plurality of second convex bead portions 28 are formed on the resin panel 24, the resin panel 24 is deformed out of the plane by being compressed from the vehicle width direction inner front end portion and the vehicle width direction outer rear end portion ( (Distortion) can be suppressed (reduced).

  The same applies when a collision load directed to the rear side of the vehicle body is input to the rocker 14, such as when the vehicle collides with the front surface of the minute lap. That is, when the rocker 14 moves to the vehicle body rear side, the vehicle width direction outer front end portion of the resin panel 24 on the rocker 14 side is compressed to the vehicle body rear side, and the resin panel 24 on the front side member 18 side in the vehicle width direction. The inner rear end is relatively compressed toward the front side of the vehicle body.

  However, the first convex bead portion 26 extends in this compression direction. Therefore, in the resin panel 24, the strength against compressive deformation can be improved. That is, since the plurality of first convex bead portions 26 are formed on the resin panel 24, the resin panel 24 is deformed out of the plane by being compressed from the vehicle width direction outer front end portion and the vehicle width direction inner rear end portion ( (Distortion) can be suppressed (reduced).

  Further, a vertical wall 32 substantially perpendicular to the resin panel 24 is integrally formed continuously in the circumferential direction around the intersection 30 of the first convex bead portion 26 and the second convex bead portion 28. ing. Therefore, the strength (rigidity) of the intersecting portion 30 can be reinforced (increased) by the vertical wall 32, and the out-of-plane deformation (distortion) of the intersecting portion 30 can be suppressed or prevented. Therefore, buckling of the resin panel 24 due to the input of a load can be suppressed or prevented, and as a result, deformation of the vehicle compartment can be suppressed or prevented.

  Further, since the resin panel 24 is formed of a carbon fiber reinforced resin material (CFRP), the vehicle body floor 20 can be reduced in weight while ensuring the strength (rigidity) of the vehicle body floor 20. Since the resin panel 24 can improve the strength (rigidity) of the vehicle body floor 20, vibration of the vehicle body floor 20 during traveling of the vehicle can be suppressed, and abnormal noise (noise) resulting from the vibration can be suppressed. ) Can be suppressed or prevented.

  The vehicle body resin panel structure 10 according to the present embodiment has been described with reference to the drawings. However, the vehicle body resin panel structure 10 according to the present embodiment is not limited to the illustrated one, and the gist of the present invention is described. The design can be changed as appropriate without departing from the scope. For example, the resin panel 24 is not limited to a configuration molded from a carbon fiber reinforced resin material (CFRP), and may be molded from a glass fiber reinforced resin material (GFRP) or the like.

  Further, for example, a third convex bead portion (not shown) extending in the vehicle width direction may be formed on the resin panel 24 in order to cope with a side collision of the vehicle. However, the vehicle body resin panel structure 10 according to the present embodiment has an out-of-plane deformation (distortion) of the resin panel 24 when a shearing force directed in the opposite direction is applied to the resin panel 24 due to the input of a load. Therefore, it is sufficient that at least the first convex bead portion 26 and the second convex bead portion 28 are formed.

  In addition, the vehicle body resin panel structure 10 according to the present embodiment is not limited to an aspect applied to the resin panel 24 constituting the vehicle body floor 20. The vehicle body resin panel structure 10 according to the present embodiment is a resin panel that may be subjected to a shearing force in a relatively reverse direction by an input of a load, such as a resin panel (not shown) that partitions a passenger compartment and a trunk room. It can be effectively applied to the whole.

10 vehicle body resin panel structure 12 vehicle body 14 rocker (first frame member)
18 Front side member (second frame member)
24 Resin Panel 26 First Convex Bead Part 28 Second Convex Bead Part 30 Intersection 32 Vertical Wall

Claims (4)

A rocker that extends along the vehicle longitudinal direction on the outer side in the vehicle width direction and constitutes the skeleton of the vehicle body,
A side member that extends in the vehicle longitudinal direction inside the rocker in the vehicle width direction in plan view, and that constitutes the skeleton of the vehicle body;
A resin panel provided between the rocker and the side member ;
A plurality of first convex bead portions formed on one surface side of the resin panel and extending in a direction crossing the extending direction of the rocker and the side member ;
A plurality of second protrusions formed on one surface side of the resin panel, intersecting with the extending direction of the rocker and the side member and extending in a direction intersecting with the extending direction of the first projecting bead portion. A bead part;
A vertical wall that is formed on the other surface side of the resin panel and continuously surrounds the intersecting portion where the first convex bead portion and the second convex bead portion intersect in the circumferential direction of the intersecting portion;
Car body resin panel structure with   The vehicle body resin panel structure according to claim 1, wherein the vertical wall is formed perpendicular to the resin panel.   The vehicle body resin panel structure according to claim 1 or 2, wherein a thickness of the vertical wall is at least equal to a thickness of the resin panel.   4. The vehicle body according to claim 1, wherein a height of the vertical wall is equal to a depth of the first convex bead portion and the second convex bead portion. 5. Resin panel structure.

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