JP2012045622A - Plate material with recessed and protruded parts, and vehicle panel and laminated structural body using the plate material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plate material having recessed and protruded part patterns which extremely enhance rigidity improvement effect, and to provide a useful vehicle panel and laminated structural body using that kind of plate material.SOLUTION: A plate material includes a plate surface which is composed by combining a number of imaginary squares horizontally and vertically, and also, in which recessed and protruded shapes are formed. In the plate material, a whole shape of the plate surface is composed by combining three or four shapes out of: a basic shape A, where a first region M and a second region N in the shape of crank are formed in the imaginary square; and basic shapes B-D derived from the same, in such patterns that those shapes are placed opposite so that the first and second region M, N disposed in respective peripheral parts match each other. The whole shape of the plate surface is composed so that recessed and protruded shapes are formed all over the plate surface by making the second region N recess downward, while making the first region M protrude upward, or by making either or both of the first and second regions M, N protrude upward or recess downward.

Description

  The present invention relates to a plate material having an uneven portion, a vehicle panel using the same, and a laminated structure, and in particular, a plate material whose rigidity is remarkably enhanced by forming the uneven portion, and a rigidity obtained by using such a plate material. In particular, the present invention relates to a laminated structure and a vehicle panel having excellent characteristics such as energy absorption.

  2. Description of the Related Art Conventionally, in automobiles, for the purpose of reducing the weight thereof, it has been studied to replace a material of a part constituted by a steel plate or the like with a light material such as an aluminum alloy plate, and has been put into practical use. However, it goes without saying that it is necessary to ensure the rigidity required for such components as a premise for reducing the weight of such components.

  By the way, until now, in order to improve the rigidity without increasing the thickness of the plate material, it has been studied to improve the rigidity in terms of shape by providing a corrugated shape or an uneven pattern on the plate material. Yes. For example, in Patent Document 1, as a material of a component made of a plate material called a heat insulator which is one of automotive components, a large number of emboss moldings are used to ensure isotropic rigidity without increasing the plate thickness. The thing which forms the convex part of this is proposed. In addition to such heat insulators, various plate materials having improved rigidity by forming uneven portions such as embossing have been proposed in Patent Documents 2 to 6 and the like in various applications. .

  Therefore, as in Patent Document 1 and the like, it is a fact that a plate material on which a large number of concave and convex portions are formed is about twice as rigid as that without a concave and convex portion, thereby reducing the weight by about 20%. It is also true that it can be realized. In addition, the corrugated plate material formed by forming a corrugated plate shape has directionality, and the rigidity is improved in one direction, but the desired rigidity improvement effect cannot be obtained in the other direction. There is. As described above, it is difficult to say that the shape of the concave and convex portion that is optimal for improving the rigidity without increasing the thickness is still sufficiently elucidated so far. . Moreover, it is always required to increase the rigidity improvement effect of the plate material more than ever. In addition to automobiles, there is a demand for reducing the weight of parts made of plate materials in various mechanical devices and the like, and in addition to the necessity for such weight reduction, there is a need for material costs. Reduction effects are also expected. Moreover, if it is a board | plate material (material which has a board shape), the request | requirement of rigidity exists regardless of a material.

  In addition, using a plate having an uneven portion with a high rigidity improving effect, and using a laminated structure having the same as a constituent member, or using a plate having an uneven portion with a high rigidity improving effect as an inner panel or an outer panel Also, the vehicle panel is required to have higher rigidity than the conventional one.

  For this reason, the present inventor previously described in Japanese Patent Application No. 2010-1557577 in any direction by the shell structure in which the concavo-convex portions are formed so that patterns such as H shapes and ridge shapes are repeatedly formed on the plate surface. It has been clarified that a highly rigid plate material having a bending rigidity exceeding 10 times that of the original flat plate can be realized and the weight reduction rate can be increased to 50% or more. However, further investigation by the present inventor has revealed that such a shell-structured plate material is not sufficient in terms of surface rigidity compared to the effect of improving the bending rigidity.

Japanese Patent No. 4388558 Japanese Patent No. 3332353 Japanese Patent Laid-Open No. 9-254955 Japanese Patent Laid-Open No. 2000-288643 JP 2002-307117 A JP 2002-321018 A

  Here, the present invention has been made in the background of such circumstances, and the problem to be solved is that in the plate material whose rigidity has been improved by providing the uneven portion, the effect of improving the surface rigidity is achieved. It is to provide a plate material having a concavo-convex pattern, which can be further effectively improved and can further reduce the weight, and to provide a useful vehicle panel and laminated structure using such a plate material. There is.

  The present invention can be suitably implemented in various aspects as listed below in order to solve the problems described above or the problems grasped from the description of the entire specification and the drawings. Each aspect described below can be employed in any combination. It should be noted that the aspects or technical features of the present invention are not limited to those described below, and can be recognized based on the description of the entire specification and the inventive concept disclosed in the drawings. Should be understood.

(1) A plate material in which a large number of virtual squares are combined vertically and horizontally to form a plate surface and an uneven shape is formed on the plate surface,
When the length of one side of the square: L is divided into four equal parts and expressed in a two-dimensional orthogonal coordinate system as L = 4a (where 0.5a ≦ x ≦ 1.5a), point A ₁ (x, 4a ), A ₂ point (x, x) and A ₃ point (0, x) are successively connected by a straight line to form a first partition line, and B ₁ point (4a, 4a-x), B ₂ point (4a -x, 4a-x) and the second partition line is formed B ₃ points to (4a-x, 0) connect successively in a straight line, at their first and second partition lines, the square three parts By being configured to be partitioned into the first and second partition lines, the first region composed of the outer square portions, respectively, and the square portion between the first and second partition lines. A virtual basic shape A formed with a crank-shaped second region constituted by:
A virtual basic shape B in which the first region and the crank-shaped second region are arranged symmetrically with respect to the basic shape A;
In the form formed by rotating the basic shape B by 90 °, the square portion between the first and second partition lines constitutes the crank-shaped first region, and more than these first and second partition lines. A virtual basic shape C comprising a second region in each of the outer square portions;
Three or four of the four basic shapes consisting of a virtual basic shape D having a first region and a second region of the crank shape arranged symmetrically with respect to the basic shape C, In a form in which the first region and the second region located at the peripheral edge to be matched with each other in the basic shape are matched at the corresponding peripheral edge, the plate surface is combined in the vertical direction and the horizontal direction. The overall shape of the
The first partition line and the second partition line in each basic shape are arranged on the first reference plane located in the middle of the three upper and lower virtual reference planes parallel to each other, and the first region in each basic shape In a form in which the top portion is located on the second reference surface located above the first reference surface, while the second region in each basic shape is projected to the first reference surface. In a form in which the bottom is located on the third reference plane located below, or recessed downward, or
The first partition line and the second partition line in each basic shape are arranged on either one of upper and lower virtual reference planes parallel to each other, while the first region and the second region in each basic shape Either one or both of them, in the form in which the top or bottom of the other reference surface is located, protrudes upward or dents downward,
The board | plate material which has the uneven | corrugated | grooved part characterized by the said uneven | corrugated shape being formed in the whole board surface.
(2) At least one of the first region and the second region in the combined basic shape is continuously located on the entire plate surface and extends between corresponding sides of the plate surface. The board | plate material which has an uneven | corrugated | grooved part as described in the said aspect (1).
(3) The board | plate material which has the uneven | corrugated | grooved part as described in the said aspect (2) by which the 1st area | region and / or 2nd area | region which are located continuously are arrange | positioned in the form bent in the whole board surface.
(4) The aspect (1) to the aspect (3) are characterized in that the top part and / or the bottom part have a flat surface at a reference surface to be positioned. A plate material having uneven portions.
(5) The above aspects (1) to (1), wherein an inclination angle of a side surface of a portion of the first region and / or the second region protruding upward or recessed downward is within a range of 10 ° to 90 °. The board | plate material which has an uneven | corrugated | grooved part as described in any one of the said aspect (4).
(6) The plate having the concavo-convex portion according to any one of the aspects (1) to (5), wherein the plate is formed by pressing the metal plate to form the concavo-convex shape.
(7) The board | plate material which has the uneven | corrugated | grooved part as described in the said aspect (6) whose plate | board thickness before press molding of the said metal plate is 0.03 mm-6.00 mm.
(8) The aspect (6), wherein the ratio of the length of one side of the square: L (mm) to the thickness of the metal plate before press forming: t (mm): L / t is 10 to 2000 Or the board | plate material which has an uneven | corrugated | grooved part as described in the said aspect (7).
(9) Distance between adjacent reference surfaces: H (mm), thickness of metal plate before press forming: t (mm), and above the first region and / or the second region The largest inclination angle: θ (°) of the side surface of the projecting or recessed portion is represented by the following formula:
1 ≦ H / t ≦ −3θ + 272
The board | plate material which has the uneven | corrugated | grooved part as described in any one of the said aspect (6) thru | or the said aspect (8) which satisfy | fills the relationship of these.
(10) A laminated structure formed by laminating a plurality of plate materials, wherein at least one of the plate materials has the uneven portion according to any one of the modes (1) to (9). A laminated structure characterized by being a plate material.
(11) A vehicle panel having an outer panel and an inner panel joined to the back surface of the outer panel, wherein one or both of the outer panel and the inner panel are the above-described aspects (1) to (9). A vehicle panel comprising the plate having the uneven portion according to any one of the above.

  Thus, in the plate material having the uneven portion according to the present invention, three or four of the four basic shapes A to D exhibiting different crank shape patterns depending on the uneven shape of the first region and the second region. In the form that is combined and continuously arranged vertically and horizontally, a concavo-convex pattern is formed on the plate surface, thereby improving characteristics such as rigidity improvement, vibration suppression and sound echo suppression. An excellent plate could be realized advantageously.

  In particular, by adopting a crank shape pattern in such a basic shape, the plate surface material is effectively secured with high bending rigidity characteristics by arranging the crank shape unevenness on the entire plate surface in combination. The surface rigidity of the plate material can be remarkably increased, and thus the effective rigidity improvement effect can be effectively exhibited, and the weight reduction of the plate material can be advantageously achieved.

  As described above, according to the present invention, the uneven portion has a particularly high surface rigidity improvement effect and excellent energy absorption characteristics while achieving further weight reduction as compared with the conventional plate having the uneven portion. A plate having a pattern can be advantageously obtained.

  In addition, according to the present invention, by using the plate material having the uneven portion having excellent rigidity as described above as a part of the laminated structure, a laminated structure having extremely high rigidity and excellent energy absorption characteristics can be easily obtained. There is an advantage that can be.

  In addition, according to the present invention, by using the plate material having the uneven portion with high rigidity as described above as an inner panel and / or an outer panel in the vehicle panel, a vehicle panel having extremely high rigidity and excellent energy absorption characteristics can be easily obtained. It can also be obtained.

In virtual basic shape A concerning the present invention, it is a plane explanatory view showing the arrangement form of the 1st partition line and the 2nd partition line. It is a figure corresponding to Drawing 1 showing one form of the 1st partition line and the 2nd partition line which partition basic shape A. It is a plane explanatory view showing roughly an example of four virtual basic shapes in the present invention, (a) is basic shape A, (b) is basic shape B, (c) is basic shape C, and (d ) Shows the basic shape D, respectively. It is explanatory drawing which shows an example of the virtual basic shape A used by this invention, Comprising: (a) is a plane explanatory drawing which shows an example of the pattern of the 1st area | region in this basic shape A, and a 2nd area | region, (B) is a plane explanatory view of the basic shape A formed with an uneven shape, and (c) is a perspective explanatory view of the basic shape A formed with such an uneven shape. It is a VV cross-section part explanatory drawing in FIG.4 (b). It is explanatory drawing which shows an example of the virtual basic shape B used by this invention, Comprising: (a) is a plane explanatory drawing which shows an example of the pattern of the 1st area | region in this basic shape B, and a 2nd area | region, (B) is a plane explanatory view of the basic shape B formed with a concavo-convex shape, and (c) is a perspective explanatory view of the basic shape B formed with such a concavo-convex shape. It is explanatory drawing which shows an example of the virtual basic shape C used by this invention, Comprising: (a) is a plane explanatory drawing which shows an example of the pattern of the 1st area | region in this basic shape C, and a 2nd area | region, (B) is a plane explanatory view of a basic shape C formed with a concavo-convex shape, and (c) is a perspective explanatory view of the basic shape C formed with such a concavo-convex shape. FIG. 8 is a partial explanatory view of a section VIII-VIII in FIG. It is explanatory drawing which shows an example of the virtual basic shape D used by this invention, Comprising: (a) is a plane explanatory drawing which shows an example of the pattern of the 1st area | region in this basic shape D, and a 2nd area | region, (B) is a plane explanatory view of the basic shape D formed with an uneven shape, and (c) is a perspective explanatory view of the basic shape D formed with such an uneven shape. It is explanatory drawing which shows the example from which uneven | corrugated shape differs in virtual basic shape A, Comprising: (a) shows the example which comprised the 2nd area | region as a bottom part of a flat shape, without making it dent downward in basic shape A. 4B is an explanatory view corresponding to FIG. 4B, FIG. 4B is a perspective explanatory view of the shape of FIG. 4A, and FIG. 4C is a form in which the second region is flat in the basic shape B. FIG. 6 is a plan explanatory view corresponding to FIG. 6B, and FIG. 10D is a partial sectional view taken along the line XX in FIGS. 10A and 10C. FIG. 11 is an explanatory diagram illustrating another example of a virtual basic shape that does not cause the second region to be recessed, and (a) is an explanatory plan view corresponding to FIG. 7 (b) related to the basic shape C. (B) is a perspective explanatory view of the shape of (a), (c) is an explanatory plan view corresponding to FIG. 9 (b) for the basic shape D, and (d) is FIG. 11 is a partial sectional view taken along line XI-XI in FIGS. It is sectional explanatory drawing corresponding to FIG. 5 which shows the form formed by the 1st area | region and 2nd area | region in hypothetical | virtual basic shape AD having both protruded or recessed in the same direction. It is explanatory drawing which shows an example of the combination pattern of basic shape AD, Comprising: (a) is a plane explanatory drawing which shows the whole board surface comprised by such a combination pattern, (b) It is plane explanatory drawing which shows the uneven | corrugated shape. It is explanatory drawing of the board | plate material which has the uneven | corrugated | grooved part which concerns on the example 1 of arrangement | positioning, Comprising: (a) is a plane explanatory drawing which shows the uneven | corrugated form, (b) is the perspective explanatory drawing. It is explanatory drawing which shows another example of the combination pattern of basic shape AD, Comprising: (a) is a plane explanatory drawing which shows the whole board surface comprised by such a combination pattern, (b) These are the plane | planar explanatory drawings which show the uneven | corrugated shape. It is explanatory drawing of the board | plate material which has an uneven | corrugated | grooved part which concerns on the example 2 of an arrangement | positioning, Comprising: (a) is a plane explanatory drawing which shows the uneven | corrugated shape of such a board | plate material, (b) is the perspective explanatory drawing. It is explanatory drawing which shows an example of the combination pattern using basic shape A, B, D, Comprising: (a) is a plane explanatory drawing which shows the whole board surface comprised with such a combination pattern, ( b) is an explanatory plan view showing the uneven shape. It is explanatory drawing of the board | plate material which has an uneven | corrugated | grooved part which concerns on the example 3 of an arrangement | positioning, Comprising: (a) is a plane explanatory drawing which shows the uneven | corrugated shape of such a board | plate material, (b) is the perspective explanatory drawing. It is explanatory drawing of the whole board surface of the board | plate material which has an uneven | corrugated | grooved part which concerns on the example 4 of an arrangement | positioning, Comprising: (a) is a plane explanatory drawing which shows the whole board surface of the pattern comprised in a 1st area | region and a 2nd area | region. (B) is a plane explanatory view showing the uneven shape. It is explanatory drawing of the board | plate material which has an uneven | corrugated | grooved part which concerns on the example 5 of an arrangement | positioning, Comprising: (a) is a plane explanatory drawing which shows the whole board surface of the pattern comprised in a 1st area | region and a 2nd area | region, (b) is. It is a plane explanatory view showing the uneven shape. It is explanatory drawing of the board | plate material which has an uneven | corrugated | grooved part which concerns on the example 6 of an arrangement | positioning, Comprising: (a) is a plane explanatory drawing which shows the whole board surface of the pattern comprised in a 1st area | region and a 2nd area | region, (b) is. It is a plane explanatory view showing the uneven shape. It is explanatory drawing of the board | plate material which has an uneven | corrugated | grooved part which concerns on the example 7 of an arrangement | positioning, Comprising: (a) is a plane explanatory drawing which shows the whole board surface of the pattern comprised in a 1st area | region and a 2nd area | region, (b) is. It is a plane explanatory view showing the uneven shape. It is explanatory drawing which shows the cylindrical body which has an uneven | corrugated | grooved part. It is decomposition | disassembly explanatory drawing which shows an example of a laminated structure. It is decomposition | disassembly explanatory drawing which shows an example of a vehicle panel.

  Hereinafter, in order to clarify the present invention more specifically, the configuration of the present invention will be described in detail with reference to the drawings.

  First, in FIG. 1, in a plate member having an uneven portion according to the present invention, a basic shape A serving as a base of a virtual basic shape (basic unit) constituting the same is arranged in a first partition line and a second partition line. It is shown in a planar form with a pattern. In this case, the virtual basic shape A has a square shape, and is divided into three parts by a first partition line F and a second partition line G. And the square part outside each of the first partition line F and the second partition line G, in other words, the part surrounded by the first partition line F and the square outline, and the second partition line G and the square outline The first region M is configured from the portion surrounded by the line, while the crank-shaped second region N is formed in a square portion between the first partition line F and the second partition line G. It is configured. Here, the crank shape is intended to mean a shape in which linear portions are bent at 90 ° angles in opposite directions at both ends.

Specifically, the first partition line F and the second partition line G that partition the basic shape A are obtained by sequentially connecting points A _{1 to} A _{3 and} points B _{1 to} B ₃ with straight lines, respectively. It is what Here, the points A ₁ , A _2, and A ₃ that give the first partition line F are obtained by dividing the length of one side of the square: L into four equal parts, and L = 4a (where 0.5a ≦ x .Ltoreq.1.5a) is represented by (x, 4a), (x, x) and (0, x), respectively, where A ₁ between and a ₂ points and a _3-point between points and a ₂ points, respectively, there is a form formed by connecting in a straight line. Further, regarding the second partition line G, the points B ₁ , B _2, and B ₃ that give it are represented by the same two-dimensional orthogonal coordinate system as described above (4a, 4a-x), (4a-x, 4a-x ) and be those shown by (4a-x, 0), where the and between the B ₂ points and B ₃ points ₁ point and the B ₂ points B However, each is connected in a straight line. A first partition line F is constituted by a line segment connecting the points A ₁ , A ₂ and A _3, and a _second partition is formed by a line segment connecting the points B ₁ , B ₂ and B _3. A line G is formed, and outside the first and second partition lines F, G (in FIG. 1, on the left side of the first partition line F and the right side of the second partition line G), respectively, strips having a predetermined width. A linear first region M is formed, and a crank-shaped second region N extending with a predetermined width is formed between the first partition line F and the second partition line G. It has become.

FIG. 2 shows the arrangement pattern of the first and second partition lines F and G when x = a in the basic shape A shown in FIG. The first partition line F is formed by connecting A ₁ point (a, 4a), A ₂ point (a, a), and A ₃ point (0, a) sequentially with a straight line, and second The partition line G is formed by sequentially connecting B ₁ point (4a, 3a), B ₂ point (3a, 3a), and B ₃ point (3a, 0) with a straight line.

  In the present invention, the basic shape A and three basic shapes derived therefrom, that is, the basic shape A shown in FIG. 2, are represented by (b), (c) and ( The virtual basic shapes B, C, and D respectively shown in d) are appropriately combined and used. Specifically, (a) in FIG. 3 corresponds to the basic shape A shown in FIG. 2, and (b) is, for example, a square shape with respect to the basic shape A shown in (a). A basic shape B having a line-symmetric shape with respect to one side (here, the right side or the left side in the figure) of the four sides is shown, and includes a first region M and a crank-shaped second region N. However, it has the structure where it is arrange | positioned in the form symmetrical with the basic shape A. In addition, the basic shape C shown in FIG. 3C is the same as the basic shape B shown in FIG. 3B in the right direction (clockwise), for example, with one corner of the square as the rotation center. ) In the form rotated by 90 °, the basic shape B has a pattern in which the arrangement form of the first region M and the second region N is opposite to each other. That is, in the square part between the first partition line F and the second partition line G, the crank-shaped first region M is configured, and more than these first and second partition lines F, G, respectively. Two second regions N are formed in the outer square portion. Further, the basic shape D shown in FIG. 3D is different from the basic shape C shown in FIG. 3C in, for example, one of four sides of a square (here, the right side or the left side in the figure). A crank-shaped first region M and two second regions N, which are arranged in line symmetry with respect to the sides of the second region N. That is, the basic shape D has a first crank-shaped first region M and two second regions N with respect to the basic shape C in a bilaterally symmetric form. In addition, in the four virtual basic shapes A to D shown in FIG. 3, in order to clarify the regions protruding or recessed in the same direction when they are three-dimensional shapes, a white region and a gray region Here, the first region M is shown as a white region, while the second region N is shown as a gray region.

  In the present invention, among these four virtual basic shapes A to D, three or four of the four basic basic shapes A to D are mutually connected between the first regions M and the second regions N located at the peripheral portions of the respective basic shapes. In order to coincide with each other (so that they are connected at the same width), the overall shape of the plate surface of the target plate material is configured by sequentially combining in the longitudinal and lateral directions in the form of abutting at the corresponding peripheral edge. However, in order to form an uneven portion on the plate surface of such a plate material, these four basic shapes A to D are respectively formed in a three-dimensional shape that is convex upward and / or concave downward. Will be.

Specifically, the basic shape A shown in FIGS. 2 and 3A is, for example, a three-dimensional shape that is uneven as shown in FIG. 3 (a) corresponds to FIG. 3 (a), in which the first region M, which is a white region, is at a predetermined height upward (upward in the direction perpendicular to the paper surface). As shown in FIGS. 4 (b) and 4 (c), the second region, which is a gray region, is recessed downwardly (downward in the direction perpendicular to the paper surface) to a predetermined depth. It is a three-dimensional shape that takes a form. In such a three-dimensional shape, the upper and lower three virtual reference planes K _{1 to} K parallel to each other are shown, as shown in FIG. 5 which reveals the form of a part of the VV cross section in FIG. ₃ , the first partition line F and the second partition line G in the basic shape A are arranged on the first reference plane K ₁ located in the middle, and the white first region M is defined as the first reference surface K _1. In a form in which the top portion 12 is located on the second reference plane K ₂ located at a distance of H ₁ above the plane K _1, the second reference plane K ₂ is projected upward, and the gray second region N is In the form in which the bottom portion 14 is located on the third reference surface K ₃ located at a distance of H ₂ below the first reference surface K ₁ , the shape is formed to be recessed downward. . Note that the side wall 16 having a side surface that is an inclined surface from the first reference surface K ₁ toward the second reference surface K ₂ due to the upward protrusion of the first region M becomes the first reference surface K. _{1 is formed} at a predetermined inclination angle: θ ₁ (°), and the first reference surface K ₁ to the third reference surface are formed by the downward depression of the second region N. The side wall 18 having a side surface composed of an inclined surface toward K ₃ is formed with a predetermined inclination angle: θ ₂ (°) with respect to the first reference surface K ₁ .

Further, even in the basic shape B shown in FIG. 3 (b), it is configured in a three-dimensional shape of an uneven shape that is line-symmetric with respect to the basic shape A described above. FIG. It has been revealed. Here, (a) corresponds to FIG. 3 (b), and the white first region M is projected upward, as in the basic shape A, while the gray second region N is downward. By being recessed, the three-dimensional shape of the concavo-convex shape as shown in FIGS. 6B and 6C is formed. And the partial form of the VI-VI cross section of FIG.6 (b) in such basic shape B is made into the cross-sectional structure similar to FIG. 5, and the top part 12 is the 2nd reference plane K in the 1st area | region M. while being formed so as to be located on the _two, the second region N, the bottom 14 is formed so as to be located on the third reference plane K _3.

Furthermore, in the basic shape C shown in FIG. 3C, the first region M and the second region N are opposite to the first region M and the second region N in the basic shape B described above. In the form, it is set. Therefore, in the basic shape C, the crank-shaped first region M is located sideways and protrudes upward, while the two second regions N are recessed downward. The outline is shown in FIG. (A) corresponds to FIG. 3 (c), and such a basic shape C is different from the basic shape B described above in a form in which the concavo-convex shape is inverted, (b) And it is set as the uneven structure as shown in (c). There, as is clear from FIG. 8 showing a part of a VIII-VIII cross section of (b), the first region M of the white, it is allowed to protrude a distance of an H ₁ from the first reference plane K ₁ above The top portion 12 is configured to be located on the second reference plane K ₂ , while the gray second region N is recessed downward from the first reference plane K _{1 by} a distance of H _2. Thus, the bottom portion 14 is configured to be positioned on the third reference plane K ₃ .

In addition, in the basic shape D shown in FIG. 3 (d), an uneven shape is provided in a line-symmetric form with the basic shape C described above, and an outline thereof is shown in FIG. . Here, (a) corresponds to FIG. 3 (d), and the white first region M having a crank shape axisymmetric with respect to the basic shape C is projected upward, while the gray first The two regions N are recessed downward to form a three-dimensional shape with irregularities as shown in (b) and (c). And the IX-IX cross-sectional shape in the (b) is the same as the cross-sectional shape of the previous FIG. 8, and the first region M is upward so that the top portion 12 is located on the second reference plane K _2. The side wall 16 is formed so as to project a side surface having a predetermined inclination angle: θ ₁ (°), while the second region N is recessed downward, and the bottom portion 14 has a predetermined inclination angle: It is formed with sidewalls 18 that provide side surfaces having θ ₂ (°).

In each of the virtual basic shapes A to D illustrated in FIGS. 4 to 9, the first region M is protruded upward to form the top portion 12, while the second region N is It is a concave-convex structure that is recessed downward to form the bottom 14, but either one of the first region M and the second region N protrudes upward or is recessed downward, It is also possible to form an uneven structure. That is, the first partition line F and the second partition line G in the basic shapes A to D are arranged on _one of the upper and lower virtual reference planes K ₁ and K ₂ parallel to each other, while the first partition lines F and B in the basic shapes A to D are arranged. Since one of the first region M and the second region N is projected on the other reference surface in the form in which the top or bottom thereof is located, or is recessed downward, a concavo-convex structure is formed. An example thereof is shown in FIGS.

10 and 11, in the basic shapes A to D, only the first region M is protruded upward to form a top portion 12, while the second region N is a flat bottom portion. 14 is configured. Specifically, FIGS. 10A and 10B showing the basic shape A correspond to FIGS. 4B and 4C, respectively, and correspond to the second region N there. A flat bottom portion 14 having a size is formed, and FIG. 10C showing the basic shape B corresponds to FIG. 6B and is the same as the second region N in this case. A flat bottom 14 is formed in size. Then, FIG. 10 (d) shows a part of sectional view taken along line X-X in them (a) and (c), an explanatory view corresponding to FIG. 5, where the first reference plane K ₁ above On the other hand, the top portion 12 is positioned on the second reference plane K _{2 at a} predetermined height H ₁ from the first reference plane K _1. . The inclined side wall 16 is formed at a predetermined angle: θ ₁ (°) with respect to the reference plane K ₁ , as in FIG.

  FIGS. 11A and 11B showing the basic shape C correspond to FIGS. 7B and 7C, respectively, in which only the first region M protrudes upward. Thus, while forming the top portion 12, a flat bottom portion 14 having a size corresponding to the second region N is formed, and FIG. 11C showing the basic shape D is shown in FIG. ), Where only the first region M protrudes upward to form the top portion 12 while the flat bottom portion 14 having the same size as the second region N is formed. The structure is And FIG.11 (d) which shows partially the XI-XI cross section in those Fig.11 (a) and (c) is equivalent to FIG. Since the cross-sectional shape of FIG. 11D is the same as the cross-sectional shape of FIG. 10D, the same portions are denoted by the same reference numerals, and detailed description thereof is omitted.

Furthermore, in the basic shapes A to D shown in FIGS. 10 and 11, the first region M has a convex shape, and the second region N has a flat surface. However, on the contrary, the first region M has a flat shape, while the second region N has a shape protruding upward, or only the first region M of the basic shapes A to D or It is also possible to dent only the second region N, and furthermore, the partition lines F and G of the basic shapes A to D are positioned on one reference plane, while being parallel to such a reference plane. It is also possible to form a concavo-convex shape in which the first region M and the second region N are both protruded or recessed with respect to another reference surface. Note that FIG. 12 shows a concavo-convex structure in which the first region M and the second region N are both projected upward to form the top portion 12 in the form of a partial cross-sectional view. In FIG. 12, in the state where the first partition line F and the second partition line G are positioned on the first reference plane K ₁ , the first region M and the second region N are respectively inclined at a predetermined inclination. While projecting upward while forming side walls 16 and 18 of angles: θ ₁ and θ ₂ , their tops 12 (14) are located at a predetermined height H ₁ from the first reference plane K _1. there is a second configuration comprising been brought located on the reference plane K _2.

In addition, regarding the concavo-convex shapes of the basic shapes A to D, in the embodiment illustrated in FIGS. 3 to 12, the top portion 12 of the first region M that protrudes upward and the bottom portion of the second region N that is recessed downward. 14 has a structure having a flat surface at each reference plane, but one or both of the top 12 and the bottom 14 are not provided with corners having such a flat surface. it is also possible to employ a structure (the same structure and the corner portion located on the reference plane K ₁ in FIG. 12).

  Further, in such basic shapes A to D, virtual shapes such as squares and crank shapes are not limited to geometrical concepts, and shapes that can be recognized as generally called shapes such as squares. Naturally, it is also acceptable to provide curved surfaces called so-called fillets, in which each side is slightly curved, or the corners and surfaces are rounded as necessary for molding. It should be understood. Furthermore, in the concavo-convex shape formed in each basic shape A to D, the corner of the concavo-convex is not only a corner where the plane and the plane intersect, but also a corner formed by connecting the plane and the plane in a curved shape There is no problem even if it is done. In addition, the coordinate position represented by a that defines the dividing lines F and G that respectively partition the basic shapes A to D is set to an accurate value that is a quarter of the square length (L). In addition, a certain degree of variation can be allowed within the range in which the object of the present invention can be achieved.

Further, in each of the basic shapes A to D, the first reference surface K of the side walls 16 and 18 generated when the first region M and the second region N are protruded upward or recessed downward, respectively. the inclination angle theta ₁ with respect to _1, theta ₂ are each desirably in the range of 10 ° to 90 °, by doing so, while securing the formability of the sheet material having an uneven portion of interest, their superior The uneven part shape which exhibits the rigidity improvement effect can be obtained advantageously.

When the inclination angle θ _{1 of the} side wall 16 and the inclination angle θ _{2 of the} side wall 18 are less than 10 °, it becomes difficult to increase the protrusion height of the first region M and the recess depth of the second region N. Improvement effect comes to decline. In addition, when the inclination angles θ ₁ and θ ₂ exceed 90 °, it becomes difficult to form the uneven portion.

In particular, when forming a concavo-convex portion corresponding to the virtual basic shapes A to D by press forming a metal plate, the inclination angles θ ₁ and θ ₂ are both 70 ° due to the problem of formability. Therefore, it is desirable that the inclination angles θ ₁ and θ ₂ are in a preferable range of 10 ° to 70 °. Furthermore, in order to form the pattern of the uneven portions in each of the basic shapes A to D, a plurality of side walls 16 and side walls 18 are formed corresponding to the first region M and the second region N. The plurality of side walls 16 and 18 do not have to have the same inclination angle, and the inclination angle can be changed depending on the part, and the angle may be changed in two or more stages. These inclination angles are all within the range of the desirable inclination angle described above.

  Then, the four basic shapes A to D having such an uneven shape are continuously in contact with the white first region M and the gray second region N on each side (peripheral part) of each virtual square. As described above, all or three or two of the four basic shapes A to D are appropriately combined, but the first region M and the second region N in the four basic shapes A to D are arranged. According to the pattern, the combination of these basic shapes A to D is naturally restricted. That is, for the basic shape A, the basic shape B or the basic shape C can be arranged on the top, bottom, left and right, and for the basic shape B, the basic shape A or the basic shape D is arranged on the top, bottom, left, and right. It can be harassed. Further, for the basic shape C, the basic shape A or the basic shape D can be arranged on the top, bottom, left and right, and for the basic shape D, the basic shape B or the basic shape C is arranged on the top, bottom, left or right. It can be done. And in such arrangement | positioning form, the board | plate material which has the uneven | corrugated | grooved part made from the uneven | corrugated shape formed in the whole board surface is comprised by combining three or four of basic shape AD. .

  For example, the four basic shapes A, B, C, and the like so that the shapes (lengths) of the first region M and the second region N coincide with each other at the corresponding peripheral edge (side) of the combined basic shapes. By arranging D in combination, as shown in Table 1 below, a plate material having an uneven portion with an arrangement pattern of basic shapes A to D is obtained. Further, a plate material having an uneven portion constituted by such an arrangement pattern is complicated by combining a convex first region M and a concave second region N as shown in FIG. As a result, it has a three-dimensional shape as shown in FIG. 13 (b).

  Further, as is apparent from the arrangement pattern shown in FIG. 13 and the arrangement pattern described later, when the three or four basic shapes A to D are arranged in combination according to the present invention, the first region M and the second region N are In addition, each of the adjacent basic shapes is connected over the entire width and does not become a connection at the contact point, and further, at least one of these two regions M and N is not connected to the entire plate surface. In this way, a configuration in which the corresponding sides of the plate surface are continuously located, extend between corresponding sides of the plate surface, and connect the corresponding sides is advantageously realized. Then, by forming such a continuous connection pattern of the first region M and / or the second region N, effective improvement of the surface rigidity of the plate material having the uneven portion according to the present invention is advantageously achieved. It will be.

  In particular, as shown in the drawing, the first region M and / or the second region N connected so as to be continuously located are arranged in a bent form with an angle of 90 ° over the entire plate surface, whereby bending rigidity is achieved. The effect of improving rigidity including surface rigidity can be further enhanced.

  In addition, in the board | plate material which has an uneven | corrugated | grooved part as shown in FIG.13 (b) obtained by combining three or four of basic shape AD, unless the shape of the uneven | corrugated | grooved part does not deviate from the meaning of this invention. However, it is possible to make various changes based on the knowledge of those skilled in the art. For example, the corners of the concavo-convex portions can be deformed into an arc shape, or chamfering or R-surface processing can be performed. Further, such deformation of the corners of the concavo-convex portions may inevitably occur depending on the forming method, but can be tolerated as long as the operation and effect of the present invention are not significantly impaired.

  By the way, in general, a plate material having an uneven portion according to the present invention obtained by combining three or four virtual basic shapes A to D as described above is generally formed by pressing a predetermined metal plate. By forming an uneven shape corresponding to D, it is advantageously manufactured. The metal plate can be easily formed with uneven portions by press forming such as embossing or plastic processing such as roll forming. From the basic shapes A to D described above, the predetermined uneven portion shape can be formed. In forming the metal plate, a metal plate is advantageously used. And as a material of such a metal plate, it is possible to employ | adopt various well-known things which can be plastically processed, such as aluminum or its alloy, steel, copper, or its alloy.

  In addition, as a formation method of the uneven | corrugated | grooved part shape according to this invention, it is also possible to form the target uneven | corrugated | grooved part shape by casting, cutting, etc. other than the above-mentioned press molding and plastic working. Moreover, as a material of the plate material on which such uneven portions are formed, it is possible to use other materials such as resin other than metal. In particular, if a resin material is used, it is possible to easily form the concavo-convex portion by a molding technique such as injection molding or hot pressing. In the case of using a resin material, there is an advantage that it is less subject to molding restrictions than in the case of a metal material, and the degree of freedom in design is wider. Moreover, there is no problem even if it is a laminate of metal and resin or a composite material.

  Moreover, it is preferable that the plate | board thickness t (mm) before the press molding of the metal plate used at the time of manufacture of the board | plate material which has an uneven | corrugated | grooved part according to this invention is 0.03 mm-6.0 mm. In addition, in a metal plate with a plate thickness of less than 0.03 mm or a metal plate with a plate thickness of more than 6.0 mm, there is less need to improve rigidity in the use of the metal plate.

  Furthermore, in the board | plate material which has an uneven | corrugated | grooved part according to this invention, when the length of one side of the virtual square in virtual basic shape AD selected to comprise it is set to L (mm), before the said press molding In relation to the thickness of the metal plate: t (mm), the ratio L / t is preferably 10 to 2000. If the ratio: L / t is less than 10, molding may be difficult. On the other hand, if the ratio: L / t exceeds 2000, a sufficient uneven shape is formed. May become difficult, and there is a possibility that the effect of improving the rigidity cannot be fully exhibited.

Further, in the basic shapes A to D, the adjacent heights corresponding to the protrusion height H ₁ (mm) upward of each first region M and the recess depth H ₂ (mm) downward of the second region N The distance between the reference surfaces: H (mm) is the thickness of the metal plate before press forming: t (mm), and projects above or below the first region M and / or the second region N. In relation to the largest inclination angle: θ (°) of the side walls 16 and 18 of the recessed portion, the following formula:
1 ≦ H / t ≦ −3θ + 272
It is desirable that the irregular shape is formed in each of the basic shapes A to D so as to satisfy the above. In addition, it is because there exists a possibility that the rigidity improvement effect by formation of the uneven | corrugated | grooved part in the 1st area | region M and the 2nd area | region N may become it difficult to fully obtain when the value of this ratio: H / t is less than 1, and This is because if it exceeds the value of (−3θ + 272), there is a possibility of causing a problem that molding becomes difficult.

  And, the plate material having an uneven portion according to the present invention obtained in this way, as it is, has a significantly increased bending rigidity and a very high surface rigidity. In addition to being used alone for various applications as a highly rigid plate material, it is also advantageously used as a laminated structure. In such a laminated structure, a plate material having an uneven portion according to the present invention is used as a single core material, and a single flat face plate is provided on each side of the three-layer structure. It can be set as a laminated body. In addition, a multi-layered structure in which a structure in which such a three-layer basic structure is repeated, that is, a plurality of plates having uneven portions according to the present invention are laminated and integrated with each other through a flat face plate. It can also be a body. Of course, it is also possible to adopt a structure in which a plurality of plate materials having uneven portions are directly laminated to form a core material, and a flat face plate is bonded to one or both sides thereof. It is also possible to make a laminated structure in a state where a plurality of plate members having a portion are directly laminated and integrated. The number of laminated plate members having such uneven portions can be appropriately changed according to the use and required characteristics of the obtained laminate.

  Further, the vehicle panel using the plate material having the concavo-convex portion according to the present invention is not limited to the hood of the automobile, and panels such as doors, roofs, floors, trunk lids and the reinforcing members thereof, bumpers, crash boxes, door beams, etc. The present invention can also be suitably applied to other energy absorbing members. And in a vehicle panel having an outer panel and an inner panel joined to the back surface of the outer panel, one or both of the inner panel and the outer panel are constituted by a plate material having an uneven portion according to the present invention. It becomes. Therefore, as the material of the outer panel or the inner panel, a steel material, an aluminum alloy material, or the like is used.

  Here, various arrangement examples formed by combining three or four of the virtual basic shapes A to D described above to configure the plate surface of the plate member having the concavo-convex portion will be clarified below, and the present invention will be described. However, it is needless to say that the present invention is not construed as being limited in any way by such an arrangement example. The present invention is not limited to the following arrangement examples, and can be implemented in various arrangement forms based on the knowledge of those skilled in the art without departing from the spirit of the present invention. However, it should be understood that both belong to the category of the present invention.

In addition, the basic shape A used as a base of the basic shapes A to D employed in the following arrangement examples has an arrangement pattern of the first region M and the second region N as shown in FIG. As shown in FIG. 2, the length (L) of one side of the virtual square is 10 mm, and the value of a obtained by dividing the length (L) of the side into four equal parts is 2.5 mm. Those having a pattern of one region M and second region N were used. The positions of points A ₁ , A ₂ and A ₃ are located at (2.5 mm, 10 mm), (2.5 mm, 2.5 mm) and (0 mm, 2.5 mm), respectively. B ₁ point, B ₂ point, and B ₃ point were located at (10 mm, 7.5 mm), (7.5 mm, 7.5 mm), and (7.5 mm, 0 mm), respectively. And while making 1st area | region M protrude upward 1.5mm, the 2nd area | region N is recessed 1.5mm below, Furthermore, while making the inclination | tilt angle of each side wall (side surface) 16,18 into 30 degrees, Although the original plate thickness before press molding is 0.3 mm, the plate thickness of the plate material after forming the concavo-convex portion is 0.278 mm in consideration of thinning by press molding from the increase ratio of the surface area. The following FEM analysis was performed. Furthermore, the basic shapes B, C, and D shown in FIGS. 3B to 3D corresponding to the basic shape A are used.

-Arrangement example 1-
When the basic shapes A to D are randomly arranged as shown in Table 1, the arrangement pattern of the entire plate surface formed by the combination of the first region M and the second region N is as large as 40 mm × 40 mm. Now, as shown in FIG. And the plane form of the board | plate material which has an uneven | corrugated | grooved part obtained by arrange | positioning four of the arrangement | positioning patterns shown by this FIG. 13 up and down, right and left is as shown in FIG. The perspective view is as shown in FIG. The arrangement example 1 of the arrangement pattern shown in FIG. 14 has a size of 160 mm × 160 mm. In this arrangement example 1, the first area M and the second area N are arranged in an arrangement pattern that continuously bends and extends at an angle of 90 ° so as to connect two opposite sides. .

  And about the board | plate material which has such an uneven | corrugated | grooved part which concerns on such an arrangement example 1, the bending rigidity was evaluated as follows by FEM analysis. That is, while the lower end of the plate shown in FIG. 14 (a) is fixed, the displacement generated in the plate is obtained when a total distributed load of 1N is applied to the upper end (upper side), thereby evaluating the bending rigidity. did. Furthermore, such a displacement was compared with a displacement of a flat plate of 160 mm × 160 mm × 0.3 mm as 0 ° direction bending rigidity, and a rigidity magnification was obtained. As a result, it was found that the bending rigidity in the 0 ° direction of the plate member having the uneven portion according to the arrangement example 1 was improved 15.76 times that of the flat plate.

  In addition, while fixing the left end of the plate member having the concavo-convex portion shown in FIG. 14 (a), the displacement that occurs when a total distributed load of 1N in total is applied to the right end (right side), the bending stiffness in the 90 ° direction Was measured as a value to be evaluated, and it was compared with a displacement of a flat plate of 160 mm × 160 mm × 0.3 mm to obtain a rigidity magnification. As a result, it has been clarified that the bending rigidity in the 90 ° direction of the plate member having the uneven portion according to the arrangement example 1 is improved by 9.13 times as compared with a flat plate having a plate thickness of 0.3 mm.

  Furthermore, about the board | plate material which has the uneven | corrugated | grooved part which concerns on this arrangement example 1, the surface rigidity was evaluated by the FEM analysis in a disk. There, a disc-shaped sample having a radius of 160 mm was used, and the displacement in the vertical direction of the outer peripheral edge was fixed, while a load of 1 N was applied to the center of the disc to determine the displacement of the center. When the displacement of the plate material (disc sample) having the concavo-convex portion according to Arrangement Example 1 was compared with the displacement of a disc having a radius of 160 mm with a plate thickness of 0.3 mm, the plate material according to Arrangement Example 1 It was revealed that the surface rigidity of the steel improved 19.26 times.

  As described above, it has been clarified that the plate material according to Arrangement Example 1 exhibits extremely excellent characteristics in terms of bending rigidity and surface rigidity as well as a result of FEM analysis that is an approximate calculation.

-Arrangement example 2-
When all of the basic shapes A to D are used and regularly arranged in the form shown in Table 2 below, the arrangement of the first region M and the second region N as shown in FIGS. 15 (a) and 15 (b). The board | plate material which has a pattern and an uneven | corrugated pattern is obtained. Then, by using the four arrangement patterns shown in FIG. 15 and combining them continuously in the vertical and horizontal directions, the uneven portions according to the arrangement example 2 as shown in FIGS. 16A and 16B can be obtained. The board | plate material which has is obtained.

  In addition, as is clear from FIGS. 15 and 16, the plate material having the uneven portions according to the arrangement example 2 is connected to the first region M and the second region N with their full widths at the butt portions of the respective basic shapes. Then, it is configured as an arrangement pattern in a form that continuously extends with a predetermined width, and is an arrangement pattern that reaches the upper and lower sides in the figure. Accordingly, the top portion 12 formed in the first region M and the bottom portion 14 formed in the second region N are provided so as to connect two corresponding sides of the plate material having the uneven portion with the same width. It is. Here, the top portion 12 provided in the first region M has a zigzag arrangement pattern that is bent and extended at an angle of 90 °, while the bottom portion 14 provided in the second region N has left and right sides. Are provided in an arrangement pattern extending in a straight line as a whole.

  And about the board | plate material which has the uneven | corrugated | grooved part which concerns on the example 2 of an arrangement | positioning obtained in this way, as a result of FEM analysis similarly to the case of the example 1 of arrangement | positioning, the bending rigidity of a 0 degree direction is a board thickness 0.3mm It was revealed that the bending rigidity in the 90 ° direction was improved to 4.71 times.

  Moreover, also in the result of the FEM analysis about surface rigidity, the plate material which has the uneven | corrugated | grooved part which concerns on the example 2 of arrangement | positioning shows that surface rigidity is greatly improved with 14.66 times with respect to a flat plate with a plate thickness of 0.3 mm. Became clear.

-Arrangement example 3-
As shown in Table 3 below, three basic shapes A to D are used, two rows in which the basic shape D and the basic shape B are regularly arranged in the horizontal direction, the basic shape A and the basic shape B, If the form which arrange | positions two rows formed regularly in the horizontal direction is arranged in the vertical direction (vertical direction), the arrangement as a whole of the first region M and the second region N on the plate surface is adopted. The patterns and three-dimensional shapes are as shown in FIGS. 17 (a) and 17 (b), respectively. Then, by arranging four of the arrangement patterns shown in FIG. 17 continuously in the vertical and horizontal directions, an arrangement example 3 having an uneven arrangement pattern and a three-dimensional shape as shown in FIGS. Therefore, the plate material according to the above is obtained. 17 and 18, the bottom 14 provided in the second region N bends at an angle of 90 °, extends in a zigzag shape, and reaches two corresponding sides. On the other hand, even at the top portion 12 provided in the first region M, the arrangement pattern is bent at an angle of 90 ° and formed in a bowl shape extending in a predetermined length. It is.

  And about the board | plate material which has the uneven | corrugated | grooved part which concerns on this arrangement example 3, as a result of FEM analysis similarly to the case of the previous arrangement example 1, the bending rigidity of a 0 degree direction is with respect to the flat plate whose plate | board thickness is 0.3 mm. As a result, it was clarified that the bending rigidity in the direction of 90 ° was improved to 6.89 times that of a similar flat plate.

  Further, as a result of FEM analysis of the surface rigidity of the plate member having the uneven portion obtained according to the arrangement example 3 as in the arrangement example 1, the surface rigidity is 15 with respect to a flat plate having a thickness of 0.3 mm. It became clear that it improved 96 times.

-Arrangement example 4-
When four basic shapes A to D are used and are regularly arranged in the form shown in Table 4 below, the arrangement of the first region M and the second region N as shown in FIG. A plate material having a pattern or a three-dimensional shape can be obtained.

  In the plate material according to Arrangement Example 4, as is clear from FIG. 19, the top portion 12 provided in the first region M is bent in a 90 ° angle and in a crossed shape. It will be arranged so as to connect the two sides facing each other.

-Arrangement example 5-
As shown in Table 5 below, a region where the basic shapes A to D are irregularly arranged and a region where the basic shapes A and C are regularly arranged are combined vertically. When the form is adopted, as shown in FIG. 20, an uneven plate material having a pattern in which the first region M and the second region N are arranged on the entire plate surface can be obtained.

  And in the board | plate material which has such an uneven | corrugated | grooved part which concerns on such an example 5 of arrangement | positioning, the top part 12 given by the 1st area | region M bends at an angle of 90 degrees, and becomes a hook shape like evidently from FIG. In the arranged pattern, it is formed continuously.

-Arrangement Example 6
When the basic shapes A and B and the basic shapes C and D are arranged in the horizontal direction as shown in Table 6 below, the arrangement pattern of the first region M and the second region N as shown in FIG. Thus, an uneven plate material in which the entire plate surface is configured can be obtained.

  And in the board | plate material of this example 6 of arrangement | positioning, as shown in FIG. 21, it is set as the arrangement | positioning pattern which two of the top parts 12 given by the 1st area | region M extend in parallel with a predetermined width | variety. On the other hand, the bottom 14 provided in the second region N is bent at an angle of 90 ° and is arranged so as to extend between two corresponding sides with a predetermined width in a bowl shape. Yes.

-Arrangement example 7-
By arranging the basic shapes A to D as shown in Table 7 below, the unevenness formed by the entire plate surface with the arrangement pattern of the first region M and the second region N as shown in FIG. A plate material having a shape can be obtained.

  Further, as shown in the drawing, the plate member having the uneven portion of the arrangement example 7 includes a pattern in which the top portion 12 provided in the first region M is bent and extended at an angle of 90 °, and a pattern extending linearly. In addition, the bottom portion 14 provided in the second region N has a plate surface shape that also has a pattern that bends at an angle of 90 ° and extends in a bowl shape.

-Cylindrical shell structure-
The plate material having an uneven portion according to the present invention may be configured in a cylindrical shape as shown in FIG. At that time, two or three reference planes K _{1 to} K _{3 on which} the top portion 12 and the bottom portion 14 of the first region M and the second region N, the first partition line F, and the second partition line G are positioned are coaxial. It is constituted by a typical cylindrical curved surface. In addition, the structure of the 1st area | region M and the 2nd area | region N which gives uneven | corrugated shape is the same as that of the specific example demonstrated previously.

  And the feature which can raise rigidity, without increasing the plate | board thickness of material, by using the cylindrical body 20 which has such an uneven | corrugated | grooved part for cylindrical structures, such as a drink can and a rocket. In addition, it has excellent energy absorption, and therefore, it can be imparted with high rigidity and excellent energy absorption characteristics when used in a vehicle body such as an automobile.

-Laminated structure-
FIG. 24 shows an example of a laminated structure according to the present invention, in which the laminated structure is provided on the surfaces on both sides of the plate member 22 having the concavo-convex portions according to Arrangement Example 1, respectively. The face plates 24 and 26 are joined to each other. As the face plates 24 and 26, flat plates having a plate thickness of 1.0 mm made of JIS standard 3000 series aluminum alloy are used.

  In such a laminated structure, an uneven plate member 22 having excellent rigidity is used as a core material, and face plates 24 and 26 are bonded to both sides thereof by adhesion, brazing, etc. It is possible to use as a laminated structure having much higher rigidity than the case of the plate material 22 having a single plate, and the plate material 22 and the face plates 24 and 26 are also made of an aluminum alloy plate, which is advantageous in reducing the weight. It can be aimed at.

  In addition, it is possible to obtain the effect of improving the damping property accompanying the improvement of the rigidity and the effect of improving the sound absorption by enclosing the air layer. As is well known, by forming a through hole in either one of the face plates 24 and 26, a Helmholtz type sound absorbing structure can be obtained, and the sound absorbing property can be further improved. In addition, as the face plates 24 and 26 used here, it is also possible to use a metal plate made of a material other than an aluminum alloy, for example, a steel plate, a titanium plate, a resin plate, or the like.

-Vehicle panel-
As shown in FIG. 25, the plate member 32 having the concavo-convex portion 30 according to the present invention is used as an inner panel, and the surface of one side of the plate member 32 is arranged toward the back side of the outer panel 34. An example of a vehicle panel is revealed. In addition, the inner panel which consists of such a board | plate material 32 is joined to the outer panel 34 by the hemming etc. in the outer peripheral part.

  In the vehicle panel illustrated in FIG. 25, the plate 32 having the concavo-convex portion 30 constituting the inner panel is excellent in rigidity improving effect as described above. It has excellent characteristics for absorbing collision energy and secondary collision energy, and also improves vibration damping with increased rigidity, and improves sound absorption by enclosing the air layer. Can also be obtained. In addition, in this example, although the board | plate material which has an uneven | corrugated | grooved part was used as an inner panel, it can be used for any one or both of an inner panel and an outer panel.

12 Top part 14 Bottom part 16 and 18 Side wall 20 Cylindrical body 22 Plate material 24 and 26 Face plate 30 Uneven part 32 Plate material 34 Outer panel

Claims (11)

A large number of virtual squares are combined vertically and horizontally to form a plate surface, and a plate material in which an uneven shape is formed on the plate surface,
When the length of one side of the square: L is divided into four equal parts and expressed in a two-dimensional orthogonal coordinate system as L = 4a (where 0.5a ≦ x ≦ 1.5a), point A ₁ (x, 4a ), A ₂ point (x, x) and A ₃ point (0, x) are successively connected by a straight line to form a first partition line, and B ₁ point (4a, 4a-x), B ₂ point (4a -x, 4a-x) and the second partition line is formed B ₃ points to (4a-x, 0) connect successively in a straight line, at their first and second partition lines, the square three parts By being configured to be partitioned into the first and second partition lines, the first region composed of the outer square portions, respectively, and the square portion between the first and second partition lines. A virtual basic shape A formed with a crank-shaped second region constituted by:
A virtual basic shape B in which the first region and the crank-shaped second region are arranged symmetrically with respect to the basic shape A;
In the form formed by rotating the basic shape B by 90 °, the square portion between the first and second partition lines constitutes the crank-shaped first region, and more than these first and second partition lines. A virtual basic shape C comprising a second region in each of the outer square portions;
Three or four of the four basic shapes consisting of a virtual basic shape D having a first region and a second region of the crank shape arranged symmetrically with respect to the basic shape C, In a form in which the first region and the second region located at the peripheral edge to be matched with each other in the basic shape are matched at the corresponding peripheral edge, the plate surface is combined in the vertical direction and the horizontal direction. The overall shape of the
The first partition line and the second partition line in each basic shape are arranged on the first reference plane located in the middle of the three upper and lower virtual reference planes parallel to each other, and the first region in each basic shape In a form in which the top portion is located on the second reference surface located above the first reference surface, while the second region in each basic shape is projected to the first reference surface. In a form in which the bottom is located on the third reference plane located below, or recessed downward, or
The first partition line and the second partition line in each basic shape are arranged on either one of upper and lower virtual reference planes parallel to each other, while the first region and the second region in each basic shape Either one or both of them, in the form in which the top or bottom of the other reference surface is located, protrudes upward or dents downward,
The board | plate material which has the uneven | corrugated | grooved part characterized by the said uneven | corrugated shape being formed in the whole board surface.   The at least one of said 1st area | region and said 2nd area | region in the said combined basic shape is located in the whole board surface continuously, and is extended between the corresponding sides of this board surface. The board | plate material which has an uneven | corrugated | grooved part of description.   The board | plate material which has the uneven | corrugated | grooved part of Claim 2 arrange | positioned in the form which the said 1st area | region and / or 2nd area | region located continuously were bent in the whole board surface.   The plate member having an uneven portion according to any one of claims 1 to 3, wherein the top portion and / or the bottom portion has a flat surface at a reference surface to be positioned.   5. The tilt angle of the side surface of a portion of the first region and / or the second region protruding upward or recessed downward is in a range of 10 ° to 90 °. The board | plate material which has an uneven | corrugated | grooved part as described in any one.   The plate material having an uneven portion according to any one of claims 1 to 5, wherein the plate material is formed by pressing the metal plate to form the uneven shape.   The plate | board material which has an uneven | corrugated | grooved part of Claim 6 whose plate | board thickness before press molding of the said metal plate is 0.03 mm-6.00 mm.   The ratio between the length of one side of the square: L (mm) and the thickness of the metal plate before press forming: t (mm): L / t is 10 to 2000. The board | plate material which has the uneven | corrugated | grooved part of description. The distance between adjacent reference surfaces: H (mm), the thickness of the metal plate before press forming: t (mm), and protruding above or below the first region and / or the second region The largest inclination angle of the side surface of the part that is recessed into the angle: θ (°) is the following formula:
1 ≦ H / t ≦ −3θ + 272
The board | plate material which has the uneven | corrugated | grooved part as described in any one of Claim 6 thru | or 8 which satisfy | fills the relationship of these.   It is a laminated structure formed by laminating a plurality of plate materials, and at least one of the plate materials is a plate material having an uneven portion according to any one of claims 1 to 9. Laminated structure. The vehicle panel which has an outer panel and the inner panel joined to the back surface of this outer panel, Comprising: Either one or both of this outer panel and this inner panel is any one of Claim 1 thru | or 9 A vehicle panel comprising a plate member having a concave and convex portion.

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