JP2009190666A - Structural parts - Google Patents

Abstract

[PROBLEMS] To secure rigidity and reduce weight without adding a reinforcing material.
A structural part is provided with a plate-like portion that is convex on one side in the plate thickness direction (arrow Z1 side) as a whole, and the plate-like portion has a convex curved surface with a smooth surface. On the other hand, the back surface 16 is a polygonal concave curved surface in which a plurality of polygonal planes 18 are combined into a concave curved surface. According to this configuration, the portion where the corner portion 22 is formed by the plurality of polygonal planes 18 on the back surface 16 of the plate-like portion 12 is locally thin (t1> t2), so that the weight can be reduced. Even when the load F acts on the plate-like portion 12, the rigidity can be ensured by the plurality of polygonal planes 18 being stretched against the load F.
[Selection] Figure 2

Description

  The present invention relates to a structural component, and more particularly, to a structural component having a configuration that ensures rigidity.

Conventionally, as a member that can be used as this type of structural component, for example, the following is known (see Patent Document 1). That is, Patent Document 1 discloses an example of a composite material in which fibers are mixed in a resin material portion and a net-like metal plate is embedded in the resin material portion.
JP-A-5-38774 Japanese Utility Model Publication No. 5-1619

  By the way, in a resin-made structural part such as a bumper cover for an automobile, for example, the plate thickness may be reduced in order to reduce the weight. However, when the plate thickness is reduced, rigidity decreases as a contradiction matter.

  On the other hand, in order to ensure rigidity, there is a method of mixing fibers in the resin material portion or embedding a mesh metal plate as in the composite material described in Patent Document 1 described above. Problems such as an increase in cost and a complicated manufacturing process occur due to the addition of the reinforcing material.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a structural component capable of ensuring rigidity and reducing weight without adding a reinforcing material. .

  In order to solve the above-mentioned problem, in the structural component according to claim 1, the surface on the one side in the plate thickness direction has a convex curved surface, and the surface on the other side in the plate thickness direction has a plurality of polygonal flat surfaces. It is made into the polygonal concave curved surface combined in the shape, The board | plate-shaped part which makes a convex in the plate | board thickness direction as a whole was provided.

  Thus, the structural component according to claim 1 is provided with a plate-like portion that is convex on one side in the plate thickness direction as a whole, and the plate-like portion has a surface on one side in the plate thickness direction. While the convex curved surface is formed, the surface on the other side in the thickness direction is a polygonal concave curved surface in which a plurality of polygonal planes are combined into a concave curved surface.

  Therefore, according to the structural component of the first aspect, the conventional structural component (that is, for example, the surface on one side and the surface on the other side in the plate thickness direction of the plate-shaped portion are both smooth curved surfaces, and The entire plate-like portion is formed with the same thickness as the maximum plate thickness of the plate-like portion in the present invention), and the angle on the other side surface in the plate thickness direction of the plate-like portion is determined by a plurality of polygonal planes. Since the portion where the portion is formed is locally thin, the weight can be reduced.

  In addition, according to the structural component of the first aspect, even when a load acts on the plate-like portion from one side in the plate thickness direction to the other side, the plate-like portion is formed on the surface on the other side in the plate thickness direction. Further, since the plurality of polygonal planes work so as to stretch against this load, rigidity equal to or higher than that of the above-described conventional structural component can be ensured.

  Thus, according to the structural component of the first aspect, rigidity can be ensured without adding a reinforcing material, and the weight can be reduced.

  Here, as described in claim 2, when the entire structural component is formed of resin, the surface on the other side in the plate thickness direction of the plate-like portion is easily formed into a polygonal concave curved surface, for example, by resin molding or the like. be able to.

  Further, as described in claim 3, the surface on one side in the plate thickness direction has a constant radius of curvature, and each central portion of the plurality of polygonal planes is smaller than the radius of curvature of the surface on the one side in the plate thickness direction. Even if a load acts from one side to the other side in the plate thickness direction on the plate-like portion when it is configured to pass on a virtual curved surface having a certain radius of curvature, a plurality of polygons are applied to this load. The plane can be stretched with good balance.

  In addition, when the plurality of polygonal planes have the same shape as each other as described in claim 4, it is preferable because each central portion of the plurality of polygonal planes can pass on the virtual curved surface. is there. Examples of the form of a plurality of polygonal planes having the same shape are as follows.

  That is, in the structural component according to claim 5, the plurality of polygonal planes are a plurality of hexagonal planes, and the plurality of hexagonal planes include a specific hexagonal plane and the specific hexagonal plane. A plurality of arrays are arranged in the horizontal plane direction and the vertical plane direction so that the sides are shared one by one with other hexagonal planes positioned around the periphery.

  In the structural component according to claim 6, the plurality of polygonal planes are a plurality of triangular planes, and the plurality of triangular planes are positioned around the specific triangular plane and the specific triangular plane. The other triangular planes are arranged in a plurality of rows in the horizontal and vertical directions so as to share one side at a time.

  Furthermore, in the structural component according to claim 7, the plurality of polygonal planes are a plurality of triangular planes, and the plurality of triangular planes share a hypotenuse between adjacent triangular planes in the horizontal direction of the plane. A plurality of arrangements are arranged in the horizontal plane direction and the vertical plane direction so that the vertex of the other triangular plane is connected to the center of the base of one triangular plane adjacent in the vertical plane direction.

  Moreover, in the structural component according to claim 8, the plurality of polygonal planes are a plurality of square planes, and the plurality of square planes share a vertical side between the square planes adjacent in the horizontal direction of the plane. A plurality of rows arranged in the horizontal direction of the plane so as to form a horizontal row of planes, and adjacent to the specific horizontal plane row and the vertical direction of the plane in the center of the horizontal side of the square plane constituting the specific horizontal row of rows By connecting the ends of the vertical sides of the square planes that make up the plane lateral rows, the plane lateral rows are flat so that other plane lateral rows are displaced in the plane lateral direction with respect to a specific plane lateral row. It is an array arranged in a plurality in the vertical direction.

  According to this arrangement, the polygonal planes composed of square planes arranged in the vertical direction of the plane are shifted from each other in the horizontal direction of the plane. Even when acting, this load can be dispersed in the plane vertical direction and the plane horizontal direction. Thereby, a plurality of polygonal planes can be stretched in a balanced manner against the load.

  The plurality of polygonal planes may be regular polygonal planes, or may be long in the plane horizontal direction or the plane vertical direction.

  In addition, the plurality of polygonal planes may have, for example, the following forms when both ends in the plane vertical direction of the plate-like portion are constrained in the plane vertical direction by the constraining portion.

  That is, in the structural component according to claim 9, the plurality of polygonal planes are a plurality of rectangular planes, and the plurality of rectangular planes have long sides made of long sides extending in the plane vertical direction. Are arranged in the plane vertical direction so as to form a plane vertical column sharing the horizontal sides of the rectangular planes adjacent to each other in the plane vertical direction, and the center of the vertical sides of the rectangular planes constituting the specific plane vertical column By connecting the end of the horizontal side of the rectangular plane that constitutes the specific plane vertical column and the other plane vertical column adjacent in the horizontal direction to the part, the other plane with respect to the specific plane vertical column A plurality of planar vertical columns are arranged in the horizontal plane direction so that the vertical columns are displaced in the vertical plane direction.

  According to this arrangement, since the horizontal side of the polygonal plane consisting of a rectangular plane extends along the direction perpendicular to the restraining direction by the restraining portion, from the one side in the thickness direction with respect to the center portion of the plate-like portion. Even when a load is applied to the other side, this load can be distributed to the vertical sides of a polygonal plane composed of a plurality of rectangular planes. Thereby, a plurality of polygonal planes can be stretched in a balanced manner against the load.

  Moreover, if each center part of a some polygon plane passes on the above-mentioned virtual curved surface, a some polygon plane may be made into the following form.

  That is, in the structural component according to the tenth aspect, the plurality of polygonal planes are two or more different types of polygonal planes. Even when configured in this way, when a load is applied to the plate-shaped portion from one side to the other in the plate thickness direction, a plurality of polygonal planes can be stretched in a balanced manner against this load.

  Even when two or more different polygonal planes are different from each other, the plurality of polygonal planes may be regular polygonal planes and are long in the horizontal plane direction or the vertical plane direction. It may be in the form.

  Further, the surface on one side in the plate thickness direction may be a smooth convex curved design surface as described in claim 11, or a convex curved surface having minute irregularities (so-called wrinkles). It may be the design surface.

  As described above in detail, according to the present invention, rigidity can be ensured without adding a reinforcing material, and weight can be reduced.

  Hereinafter, an embodiment of a structural component of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a plate-like portion 12 constituting a part of a structural component 10 according to an embodiment of the present invention. FIGS. 2 and 3 show the plate-like portion 12. It is shown in a side sectional view and a bottom view. FIG. 4 shows the plate-like part 12 in an enlarged bottom view of the main part.

  The plate-like part 12 shown in these drawings constitutes a part of a structural part (design part) 10 formed entirely of resin, such as a bumper cover for an automobile, for example, as shown in FIG. In addition, as a whole, a convex shape is formed on one side in the plate thickness direction (arrow Z1 side).

  The surface on one side in the thickness direction of the plate-like portion 12 (that is, the surface 14) has a constant curvature radius R1 and is a smooth convex curved design surface, and the other in the thickness direction of the plate-like portion 12 The side surface (that is, the back surface 16) is a polygonal concave curved surface (that is, a reinforcing surface) in which a plurality of polygonal planes 18 are combined into a concave curved surface.

  More specifically, as shown in FIG. 3, the plurality of polygonal planes 18 are a plurality of hexagonal planes having the same shape. The polygonal plane 18 composed of the plurality of hexagonal planes is a specific hexagonal plane (for example, the polygonal plane 18A) and other hexagonal planes positioned around the specific hexagonal plane, as shown in FIG. The hexagonal plane (for example, polygonal planes 18B to 18G) is arranged in a plurality of rows in the horizontal plane direction (X direction) and the vertical plane direction (Y direction) so as to share the sides 20B to 20G one by one. ing. In the present embodiment, the diagonal plane and the opposite side length τ of the polygonal plane 18 composed of hexagonal planes are the same.

  In addition, as shown in FIG. 2, the plate-like portion 12 has a configuration in which each substantially central portion of the plurality of polygonal planes 18 passes on a virtual curved surface S having a constant curvature radius R2 (R1> R2). Has been. The symbol O is the center of the curvature radii R1 and R2.

  And according to the structural component 10 which consists of the said structure, there exist the following peculiar effects.

  That is, the structural component 10 according to an embodiment of the present invention includes a plate-like portion 12 that is convex on one side in the plate thickness direction (arrow Z1 side) as a whole. Reference numeral 14 denotes a smooth convex curved design surface, while the back surface 16 is a polygonal concave curved surface in which a plurality of polygonal planes 18 are combined into a concave curved surface.

  Therefore, according to the structural component 10 according to the embodiment of the present invention, the conventional structural component 110 shown in FIG. 26 (that is, the front surface 114 and the back surface 116 are both smooth curved surfaces, and the plate-like portion 112 is used. The entirety is formed with the same thickness as the maximum thickness t1 of the plate-like portion 12 in the present embodiment, and the back surface 116 has the same radius of curvature as the radius of curvature R2 shown in FIG. In comparison, as shown in FIG. 2, the portion of the back surface 16 of the plate-like portion 12 where the corner portions 22 are formed by the plurality of polygonal planes 18 is locally thin (t1> t2). it can.

  That is, according to the structural component 10 according to an embodiment of the present invention, the hatched portion H in FIG. 5 can be omitted from the conventional structural component 110 shown in FIG.

  Moreover, according to the structural component 10 which concerns on one Embodiment of this invention, as FIG. 2 shows, even when the load F acts on the plate-shaped part 12 from the plate thickness direction one side to the other side, Since the plurality of polygonal planes 18 formed on the back surface 16 of the shaped portion 12 work so as to stretch against the load F, rigidity equal to or higher than that of the above-described conventional structural component 110 can be ensured. .

  As described above, according to the structural component 10 according to the embodiment of the present invention, rigidity can be ensured without adding a reinforcing material (for example, a fiber or a net-like metal plate, or a rib), and the weight can be reduced. Can be achieved.

  Further, according to the structural component 10 according to the embodiment of the present invention, since the entire structural component 10 is formed of a resin, the back surface 16 of the plate-like portion 12 can be easily formed into a polygonal recess by, for example, resin molding. It can be a curved surface.

  Moreover, according to the structural component 10 which concerns on one Embodiment of this invention, the plate-shaped part 12 is the structure through which each substantially center part of the some polygonal plane 18 passes on the virtual curved surface S which has the fixed curvature radius R2. Therefore, even when a load F acts on the plate-like portion 12 from one side to the other side in the plate thickness direction, the plurality of polygonal planes 18 can be stretched in a balanced manner against this load.

  In the above description, rigidity can be secured and the weight can be reduced with respect to the specific effect produced by the structural component 10 according to the embodiment of the present invention. If reduced to rigidity, high rigidity can be achieved with a weight equivalent to that of the conventional structural component 110.

  Subsequently, the rigidity analysis is performed on the plate-like portion 12, and the radius of curvature R1 of the surface 14 of the plate-like portion 12 and the dimension τ of the polygonal plane 18 when the structural component 10 exhibits the above-described specific effects are obtained.

  That is, here, the load F = 196 from one side of the plate thickness direction to the other side in the plate thickness portion 12 in a state where the four corners 13A to 13D of the plate shape portion 12 shown in FIG. 1 are constrained in the plate thickness direction (Z direction). [N] is added, and the maximum deflection amount Ψ [mm] at the center of the plate-like portion 12 at this time is obtained by changing the radius of curvature R1 of the plate-like portion 12 and the dimension τ of the polygonal plane 18.

  Then, from this result, the radius of curvature R1 of the surface 14 of the plate-like portion 12 and the dimension τ of the polygonal plane 18 when the structural component 10 exhibits the above-described specific effects are obtained.

  The curvature radius of the surface 14 is R1 = 2700, 2800, 2900, 3000, 3100, 3200 [mm]. Further, as the dimension τ of the polygonal plane 18, as shown in FIG. 4, the diagonal plane and the opposite side length of the polygonal plane 18 composed of a hexagonal plane are used. Specifically, τ = 5, 20, 25 , 50, 60, 70 [mm].

Other conditions are as follows. That is, the maximum plate thickness t1 of the plate-like portion 12 (see FIG. 2) = 2.7 [mm], the vertical length L1 of the plate-like portion 12 (see FIG. 3) = 300 [mm], and the horizontal length L2 (See FIG. 3) = 300 [mm]. Further, as a resin material for the entire structural component 10 including the plate-like portion 12, plastic (Young's modulus = 2.2 × 10 ⁹ [N / m ² ], Poisson's ratio = 0.38, density = 1.2 [g / cm ³ ]).

  6 to 12 show the rigidity analysis results for the plate-like portion 12. That is, FIG. 6 shows the relationship between the radius of curvature R1 [mm] and the maximum deflection amount Ψ [mm] with the dimension τ [mm] as a parameter. 7 to 12 show the relationship between the curvature radius R1 [mm] and the maximum deflection amount Ψ [mm] for each dimension τ [mm].

  A graph G1 shown in FIGS. 7 to 12 shows the structural component 10 according to an embodiment of the present invention, and a graph G2 shows the above-described conventional structural component 110 (FIG. 26) under the same conditions as described above. Reference).

  Considering these analysis results, as shown in FIG. 7, in the structural component 10 according to an embodiment of the present invention, when the dimension τ = 5 [mm] is set, the radius of curvature R1 = about 2700 to 3100 [ mm] has a rigidity equal to or higher than that of the conventional structural component 110 described above.

  As shown in FIG. 8, the structural component 10 according to an embodiment of the present invention has the above-described curvature radius R1 = about 2800 to 3100 [mm] when the dimension τ = 20 [mm]. The rigidity is equal to or higher than that of the conventional structural component 110.

  Further, as shown in FIG. 9, the structural component 10 according to an embodiment of the present invention has the above-described curvature radius R1 = about 2800 to 3100 [mm] when the dimension τ = 25 [mm]. The rigidity is equal to or higher than that of the conventional structural component 110.

  Further, as shown in FIG. 10, the structural component 10 according to an embodiment of the present invention has the above-described curvature radius R1 = about 2900 to 3100 [mm] when the dimension τ = 50 [mm]. The rigidity is equal to or higher than that of the conventional structural component 110.

  Further, as shown in FIG. 11, the structural component 10 according to an embodiment of the present invention has the above-described conventional component at a radius of curvature R1 of about 3000 [mm] when the dimension τ = 60 [mm]. It has the same rigidity as the structural component 110.

  On the other hand, as shown in FIG. 12, the structural component 10 according to an embodiment of the present invention has the above-described conventional structure at any curvature radius R1 [mm] when the dimension τ = 70 [mm]. The rigidity is lower than that of the structural component 110.

  FIG. 13A shows data that is the basis of the graphs G1 and G2 in FIGS. 6 to 12, and FIG. 13B shows the structural component 10 according to an embodiment of the present invention. A comparison of whether or not it has the same or higher rigidity as the conventional structural component 110 described above is shown. 13 (A) and 13 (B), the shaded portion indicates a case where the structural component 10 according to the embodiment of the present invention has rigidity equal to or higher than that of the conventional structural component 110 described above. .

  FIG. 14 is a graph based on FIG. 13B, that is, the dimension τ [mm] when the structural component 10 according to the embodiment of the present invention has the same rigidity as the conventional structural component 110 described above. ] And the radius of curvature R1 [mm] are shown. That is, the inner side (shaded portion) of the graph G3 shown in FIG. 14 shows a case where the structural component 10 according to the embodiment of the present invention has a rigidity equal to or higher than that of the conventional structural component 110 described above. Yes.

  As described above, in the structural component 10 according to the embodiment of the present invention, in order to reduce the weight while securing the rigidity, or to increase the rigidity while suppressing the increase in the weight, the plate-like shape is used. What is necessary is just to set the curvature radius R1 of the surface 14 of the part 12, and the dimension (tau) of the polygonal plane 18 inside the graph G3 shown by FIG. 14 (shaded part).

  In the present invention, the radius of curvature of the surface of the plate-like portion and the surface of the plate-like portion can be reduced so that the weight can be reduced while securing the rigidity or the increase in weight can be suppressed while suppressing the increase in weight. The main point is that the dimensions of the polygonal plane are optimally set as described above.

  In addition, here, the rigidity analysis in the case where the hexagonal plane is used as the polygonal plane 18 has been described, but the same tendency can be obtained when other forms are used as the polygonal plane 18. Therefore, the above-described calculation method of the radius of curvature R1 of the surface 14 and the dimension τ of the polygonal plane 18 is also applied to the case where other forms (for example, the following modifications) are used as the polygonal plane 18. Is possible.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited above, Of course, it can change and implement variously within the range which does not deviate from the main point. .

  For example, in the above-described embodiment, the polygonal plane 18 is a hexagonal plane having the same diagonal and opposite side length τ, but is a regular hexagonal plane as in the modification shown in FIG. May be.

  Moreover, in the said embodiment, although the some polygonal plane 18 was made into the some hexagonal plane, you may be set as the following form.

  That is, in the modification shown in FIG. 16, a plurality of polygonal planes 18 are a plurality of equilateral triangular planes. The polygon plane 18 composed of a plurality of equilateral triangle planes is a specific equilateral triangle plane (for example, the polygon plane 18A) and another equilateral triangle plane (for example, a polygon plane) positioned around the specific equilateral triangle plane. 18B to 18D) are arranged in a plurality in the horizontal plane direction (X direction) and the vertical plane direction (Y direction) so as to share the sides 24B to 24D one by one.

  In the modification shown in FIG. 17, the polygonal plane 18 composed of a plurality of equilateral triangular planes is an equilateral triangular plane (for example, polygonal planes 18A and 18B) adjacent to each other in the horizontal direction (X direction). While sharing the hypotenuse 26, the other equilateral triangular plane (for example, polygonal plane 18C) is provided at the substantially central part of the base 28 of one equilateral triangular plane (for example, polygonal plane 18A) adjacent in the vertical direction (Y direction). ) Are connected in the plane horizontal direction and the plane vertical direction so that the vertices 30 are connected.

  Further, in the modification shown in FIG. 18, the plurality of polygonal planes 18 are a plurality of square planes. The polygonal plane 18 composed of a plurality of square planes has a vertical side 32 between square planes adjacent to each other in the horizontal direction (X direction) (for example, between the polygonal planes 18A and 18B or between the polygonal planes 18C and 18D). A plurality of the horizontal plane rows 34 (34A) to be shared are arranged in the horizontal plane direction, and approximately the center of the horizontal side 36 of the square plane (for example, the polygon plane 18A) constituting the specific horizontal plane row 34A. The ends of the vertical sides 32 of a square plane (for example, a polygonal plane 18E) constituting a specific plane lateral row 34A and another plane lateral row 34B adjacent in the plane longitudinal direction (Y direction) are connected to the part. Thus, a plurality of plane lateral rows 34 are arranged in the plane longitudinal direction so that other plane lateral rows 34B are displaced in the plane lateral direction with respect to the specific plane lateral row 34A.

  According to this arrangement, the polygonal planes 18 composed of square planes arranged in the vertical direction of the plane are shifted from each other in the horizontal direction of the plane. Even when the load F acts, the load F can be dispersed in the plane vertical direction and the plane horizontal direction. As a result, the plurality of polygonal planes 18 can be stretched in a balanced manner against the load F.

  Further, as in these modifications, when the plurality of polygonal planes 18 have the same shape, the substantially central portion of the plurality of polygonal planes 18 can pass on the virtual curved surface S described above. Is preferred.

  In addition to the regular polygonal plane, for example, as shown in FIG. 19, the plurality of polygonal planes 18 may have a substantially central portion that can pass on the virtual curved surface S described above. It may be a polygonal plane that is long in the horizontal direction of the plane (in this figure, a hexagonal plane). Moreover, although not specifically illustrated, the plurality of polygonal planes 18 may be polygonal planes that are long in the plane vertical direction (Y direction).

  Moreover, when the both ends side of the plane vertical direction (Y direction) in the plate-shaped part 12 is restrained by the restraint part in the plane vertical direction, the some polygonal plane 18 may be set as the following form, for example.

  That is, in the modification shown in FIG. 20, the plurality of polygonal planes 18 are a plurality of rectangular planes. The polygonal plane 18 composed of a plurality of rectangular planes is a rectangular plane (for example, a polygonal plane) in which longitudinal sides 40 having long sides extend along the plane longitudinal direction (Y direction) and adjacent to each other in the plane longitudinal direction. 18A, 18B or polygon planes 18C, 18D) are arranged in a plurality of vertical planes so as to form a vertical plane column 44 (44A) sharing the horizontal side 42, and a specific vertical plane column 44A is configured. A rectangular plane constituting a specific plane vertical direction row 44A and another plane vertical direction row 44B adjacent to the plane horizontal direction (X direction) at a substantially central portion of the vertical side 40 of the rectangular plane (for example, polygonal plane 18A) By connecting the ends of the horizontal sides 42 of the polygonal plane 18E (for example, the polygonal plane 18E), the plane vertical direction columns 44B are shifted in the plane vertical direction with respect to the specific plane vertical direction column 44A. 44 is horizontal There is a plurality ordered array. Further, both ends 46 in the plane vertical direction of the plate-like part 12 are restrained in the plane vertical direction by the restraining part 48.

  According to this arrangement, the lateral side 42 of the polygonal plane 18 that is a rectangular plane extends along the direction (X direction) perpendicular to the restraining direction (Y direction) by the restraining portion 48, and thus the plate-like portion 12. Even when a load F is applied from one side to the other side in the plate thickness direction with respect to the central portion of the plate, the load F can be distributed to the vertical sides 40 of the polygonal plane 18 composed of a plurality of rectangular planes. As a result, the plurality of polygonal planes 18 can be stretched in a balanced manner against the load F.

  The structural component 10 shown in FIG. 20 can be suitably used, for example, as the rocker molding 50 (see also FIG. 22) of the vehicle 60 shown in FIG.

  Moreover, if the substantially center part of the some polygonal plane 18 passes on the above-mentioned virtual curved surface S, the some polygonal plane 18 may be made into the following form.

  That is, in the modification shown in FIGS. 23 to 25, the plurality of polygonal planes 18 are two or more different types of polygonal planes. That is, more specifically, in the modification shown in FIG. 23, a plurality of polygonal planes 18 are combined with a hexagonal plane (polygonal plane 18A) and a rhombus plane (polygonal plane 18B). ing. Further, in the modification shown in FIG. 24, a plurality of polygonal planes 18 are configured such that regular hexagonal planes (polygonal planes 18 </ b> B to 18 </ b> G) are arranged around a regular pentagonal plane (polygonal plane 18 </ b> A). . Further, in the modification shown in FIG. 25, a plurality of polygonal planes 18 are configured such that regular pentagonal planes (polygonal planes 18B to 18D) are arranged around a regular triangular plane (polygonal plane 18A). .

  Even in such a configuration, when a load F acts on the plate-like portion 12 from one side to the other side in the thickness direction, the plurality of polygonal planes 18 are stretched in a balanced manner against the load F. be able to.

  Even when the plurality of polygonal planes 18 are two or more different types of polygonal planes 18, the plurality of polygonal planes 18 may be regular polygonal planes. ) Or a long shape in the plane vertical direction (Y direction).

  Moreover, in the said embodiment, although the structural component 10 was entirely formed with resin, if the some polygonal plane 18 can be formed in the back surface 16 of the plate-shaped part 12 by press molding etc., for example. In addition, it may be formed of a metal such as iron or aluminum.

  Moreover, in the said embodiment, although the structural component 10 was applied, for example to the bumper cover for motor vehicles, you may apply to design parts, such as an instrument panel, for example. In addition to the design part, the structural part 10 may be applied to, for example, a part inside the door or a part arranged inside the engine room.

  Moreover, in the said embodiment, although the structural component 10 was applied to the motor vehicle, it may be applied to other vehicles (for example, a two-wheeled vehicle, a train, a ship, etc.), a house, etc., for example.

It is a perspective view which shows the plate-shaped part which comprises some structural components which concern on one Embodiment of this invention. It is side surface sectional drawing of a plate-shaped part. It is a bottom view of a plate-shaped part. It is a principal part expanded bottom view of a plate-shaped part. It is a figure explaining the effect of the structural component which concerns on one Embodiment of this invention. It is a figure which shows the rigidity analysis result about a plate-shaped part. It is a figure which shows the rigidity analysis result about a plate-shaped part. It is a figure which shows the rigidity analysis result about a plate-shaped part. It is a figure which shows the rigidity analysis result about a plate-shaped part. It is a figure which shows the rigidity analysis result about a plate-shaped part. It is a figure which shows the rigidity analysis result about a plate-shaped part. It is a figure which shows the rigidity analysis result about a plate-shaped part. (A) is a figure which shows the data used as the basis of the graph in FIGS. 6-12, (B) is a figure which compares the rigidity of the structural component which concerns on one Embodiment of this invention, and the conventional structural component. It is a figure which shows the relationship between the dimension of a polygonal plane in the case of having the rigidity equivalent to the conventional structural component about the structural component which concerns on one Embodiment of this invention, and a curvature radius. It is a figure which shows the modification of the structural component which concerns on one Embodiment of this invention. It is a figure which shows the modification of the structural component which concerns on one Embodiment of this invention. It is a figure which shows the modification of the structural component which concerns on one Embodiment of this invention. It is a figure which shows the modification of the structural component which concerns on one Embodiment of this invention. It is a figure which shows the modification of the structural component which concerns on one Embodiment of this invention. It is a figure which shows the modification of the structural component which concerns on one Embodiment of this invention. It is a figure which shows the modification of the structural component which concerns on one Embodiment of this invention. It is a figure which shows the modification of the structural component which concerns on one Embodiment of this invention. It is a figure which shows the modification of the structural component which concerns on one Embodiment of this invention. It is a figure which shows the modification of the structural component which concerns on one Embodiment of this invention. It is a figure which shows the modification of the structural component which concerns on one Embodiment of this invention. It is side surface sectional drawing which shows the plate-shaped part which comprises some conventional structural components.

Explanation of symbols

10 structural component 12 plate-like part 14 surface (surface on one side in the plate thickness direction)
16 Back side (surface on the other side in the thickness direction)
18 Polygonal plane

Claims (11)

The surface on the one side in the plate thickness direction is a convex curved surface, and the surface on the other side in the plate thickness direction is a polygonal concave curved surface that combines a plurality of polygonal planes into a concave curved surface. With a plate-like part that protrudes
Structural parts characterized by that. The whole was made of resin,
The structural component according to claim 1. The surface on one side in the plate thickness direction has a constant radius of curvature,
Each central portion of the plurality of polygonal planes passes on a virtual curved surface having a constant radius of curvature smaller than the radius of curvature of the surface on one side in the plate thickness direction.
The structural component according to claim 1 or 2, characterized in that The plurality of polygonal planes have the same shape as each other.
The structural component according to claim 3. The plurality of polygonal planes are a plurality of hexagonal planes,
The plurality of hexagonal planes are arranged in a horizontal direction and a vertical direction so that the specific hexagonal plane and another hexagonal plane located around the specific hexagonal plane share one edge at a time. It is supposed to be an array with multiple arrangements,
The structural component according to claim 4, wherein: The plurality of polygonal planes are a plurality of triangular planes;
The plurality of triangular planes are arranged in a horizontal direction and a vertical direction so that the specific triangular plane and other triangular planes positioned around the specific triangular plane share one side at a time. An array,
The structural component according to claim 4, wherein: The plurality of polygonal planes are a plurality of triangular planes;
The plurality of triangular planes share a hypotenuse with adjacent triangular planes in the horizontal direction of the plane, and the vertex of the other triangular plane is connected to the center of the base of one of the triangular planes adjacent in the vertical direction of the plane. Are arranged in a plurality in the horizontal plane direction and vertical plane direction.
The structural component according to claim 4, wherein: The plurality of polygonal planes are a plurality of square planes;
The plurality of square planes are arranged in the plane lateral direction so as to form a plane lateral row sharing the vertical sides of the square planes adjacent in the plane lateral direction, and form a specific plane lateral row. The end portion of the vertical side of the square plane constituting the horizontal plane row adjacent to the specific plane horizontal row is connected to the central portion of the horizontal side of the horizontal plane of the specific plane A plurality of the horizontal plane rows are arranged in the vertical plane direction so that the other horizontal horizontal rows are shifted in the horizontal plane direction with respect to the columns;
The structural component according to claim 4, wherein: The plurality of polygonal planes are a plurality of rectangular planes;
The plurality of rectangular planes are arranged in a plane longitudinal direction so that a longitudinal side consisting of long sides extends along the plane longitudinal direction and a rectangular side row is shared between the rectangular planes adjacent to each other in the plane longitudinal direction. And a rectangular plane constituting another plane longitudinal row adjacent to the specific plane longitudinal row and the plane lateral direction at a central portion of a vertical side of the rectangular plane constituting the particular plane longitudinal row. A plurality of the plane vertical rows are arranged in the horizontal plane direction so that the other plane vertical rows are displaced in the plane vertical direction with respect to the specific plane vertical rows by connecting the ends of the horizontal sides. An array,
The plate-like portion is constrained in the plane longitudinal direction by the restraining portion at both ends in the plane longitudinal direction.
The structural component according to claim 4, wherein: The plurality of polygonal planes are two or more different polygonal planes,
The structural component according to claim 3. The surface on one side of the plate thickness direction is a smooth convex curved design surface,
The structural component according to claim 1, wherein the structural component is a component.

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