JP2001182151A - Space truss composite board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a space truss composite board of light weight and high strength which is manufactured efficiently and economically, the board of curved surface which is light weight and high strength, and the board which is light weight and movable. SOLUTION: With parallel rows of connected materials, where multiple rigid straight materials are connected in a row with flexible nodal points which rotate freely, a plurality of pairs of parallel rows crossing at the nodal points of connected material, or the net of a connected material as an intrermediate material, while the parallel rows of connected material or line material, a plurality of crossing parallel rows of connected material or line material, the net, lattice, sheet material, or plate material of the connected material or line material, or solidifiable fluid as a facing material, the counterposed material is so arranged as to sandwich the intermediate material, with the nodal points of intermediate material alternately connected at the prescribed positions of both facing materials.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a space truss composite plate suitable for industrial production. This three-dimensional truss composite board is currently available in precast concrete boards, ALC,
It can be applied to any use where an extruded cement board, a sandwich panel, and various other composite boards are used. This three-dimensional truss composite plate can be used as a panel constituting a structure or a surface of a roof, a wall, a floor, a fitting or the like of a building. Further, it can be used as a panel constituting a flat surface and a curved surface of a fence, furniture, a container, a vehicle body, a hull, a body, and the like.

[0002]

2. Description of the Related Art Space truss structures have been developed as large span structures. Conventionally, a three-dimensional truss is formed by assembling a large number of members at a node of the truss via a connector using one side of the truss as a unit member, and connecting them one by one by welding, bolts, rivets, or the like.

In order to industrially produce a three-dimensional truss structure with a short profile, a three-dimensional truss structure composed of a combination of bending lines or a three-dimensional lattice formed by bending a lattice, or a body truss structure composed of a three-dimensionally formed pyramid is proposed. (JP-A-11-166290).

[0004] The space truss structure is lightweight, high strength and mechanically advantageous, but is difficult to manufacture. In particular, when the height of the three-dimensional truss structure is reduced, the number of nodes per area is dramatically increased in inverse proportion to the square of the member length. For this reason, it is economically difficult to manufacture a short truss structure using conventional techniques.

A conventional sandwich panel, which is a typical composite board, uses various lightweight materials, a foam material, a corrugated sheet, a honeycomb core, and the like as a core material. Sandwich panels with a three-dimensional truss core are not manufactured.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a lightweight and high-strength three-dimensional truss composite plate, a lightweight and high-strength curved three-dimensional truss composite plate, and a light-weight movable type three-dimensional truss that can be efficiently and economically produced. It is to provide a composite board.
A first problem is to simplify and automate the processing of members and the joining of nodes in order to realize a three-dimensional truss structure with a small height, thereby enabling industrial production of a three-dimensional truss composite plate. A second object is to form a three-dimensional lattice as a core of a three-dimensional truss composite plate that can follow a plane and any curved surface. A third object is to make the space between the nodes and the angle of the members of the space truss structure variable in order to make the space truss composite plate movable. The fourth problem is to realize a new type of sandwich panel using a three-dimensional lattice or a three-dimensional truss as a core material.

[0007]

Means for Solving the Problems In order to solve the above-mentioned problem of economically realizing a small-sized space truss structure, the present invention provides a method in which a large number of rigid straight members are freely rotated by one flexible node. The connecting members connected in a row are used as the intermediate members, and the facing members formed of the planar members are arranged so as to sandwich the intermediate members arranged in a plane from both sides, and the connecting members of the intermediate members form a three-dimensional lattice. In this way, the gist of the present invention is that the nodes of the connecting member are alternately connected to predetermined positions of both facing members.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In more detail, the configuration of the present invention is described in detail. The space truss composite plate of the present invention connects a large number of rigid straight members of a predetermined length in a row with flexible nodes that freely rotate. A parallel row of connecting members, a plurality of sets of parallel rows intersecting at nodes of the connecting members or a net of the connecting members serving as an intermediate material, a parallel row of connecting members or wires, and a plurality of sets of intersecting connecting members Or, a parallel row of wires, a net, a lattice, a sheet-like material, a plate-like material, or a consolidable fluid of the connecting material or the wire is used as a facing material, and the facing material is placed on two surfaces facing each other with the intermediate material interposed therebetween. Are arranged, and the nodes of the intermediate member are alternately connected to predetermined positions of both facing members.

The following terms used in the above description of the structure in the present invention have the following meanings and contents, respectively. That is, the connecting member is a member formed by connecting a large number of rigid straight members having a predetermined length at flexible nodes that freely rotate. As the connecting member, a plurality of rigid straight members, particularly connecting members connected in a line through a flexible wire to a pipe;
A connecting member in which a number of rigid straight portions are formed at predetermined intervals in a flexible wire; a connecting member in which a number of local portions of the rigid straight line at predetermined intervals are stretched or squeezed to soften; a number of rigid straight members are rotated. There is a connecting member connected in a row by a node member.
The predetermined length or the predetermined interval is a length or an interval that changes at a constant or a fixed ratio.

[0010] The rigid straight member is an elongated member having a bending shaft and a straight shaft. The cross-sectional shape of this straight material is arbitrary, such as a pipe, a circle, a corner, an L, and an H shape. In particular, pipes have excellent cross-sectional performance and are suitable as rigid straight members. The length of the rigid straight member is the length of one side of the space truss.
The material is metal, glass, ceramic, cement, stone, wood, paper, synthetic resin, FRC, FRP, or the like.

The flexible wire is an elongated member having no bending rigidity, such as a thin wire, a fiber, a fiber bundle, a stranded wire, a braid, a tube, and a chain. The materials include metals, synthetic resins, mineral substances, animals and plants. The wire is an elongated object such as a flexible wire, a rigid linear material, a connecting material, or the like. The row of wires is a row in which many wires are arranged in parallel.

The net is a flexible mesh structure. The net includes a flexible wire net, a connecting wire net, a flexible wire or a connecting wire and a rigid wire net. The mesh shapes include triangles, quadrilaterals, hexagons, and combinations of these shapes. The connection point of the net becomes the node of the space truss. The lattice is a rigid lattice structure obtained by combining rigid straight members and connecting their intersections. The shape of the lattice includes triangles, quadrilaterals, hexagons, and combinations of these shapes. The connection point of the lattice becomes the node of the space truss.

[0013] The sheet material is a thin and flexible flat or curved member. Examples of the sheet material include a thin plate, a film, a film, paper, a woven fabric, and a nonwoven fabric. Further, the caking fluid may be solidified to form a sheet material.
The plate member is a rigid flat or curved member. Plates include metal plates, synthetic resin plates, cement plates,
Reinforced concrete board, FRC, FRP, board, plywood, gypsum board, sheet glass and other composite boards. Further, the caking fluid may be solidified to form a plate-like material.

The solidifying fluid is a molten metal, a molten glass, a liquid synthetic resin, a cement kneaded material, a lime kneaded material, a gypsum kneaded material, a ceramic kneaded material, or the like. The intermediate member is a member that is disposed in the middle between two facing surfaces. The intermediate member includes a parallel row of connecting members, two sets of parallel rows intersecting at nodes of the connecting member, or a net of connecting members.

The facing material is a member arranged on two surfaces facing each other with an intermediate material interposed therebetween. The facing material includes two flat surfaces, two curved surfaces, or a combination of a flat surface and a curved surface, and the two surfaces may be parallel or inclined. The facing members arranged on both facing sides include the same kind of combination and different kinds of combinations. The members arranged on each of the two facing surfaces include one type or a combination of a plurality of types. The predetermined position at which the nodes of the intermediate member are joined is determined based on the relationship between the length of the rigid linear portion of the intermediate member, the distance between the two opposite members, and the nodes or intersections of the two opposite members.

The connection according to the present invention includes a case in which only the joints of the connecting members are connected, and a case in which the ends of the rigid straight members are included. Also, a bond fixed in place,
Some connections slide along a line or plane. Means of connection include assembling, twisting, winding, sewing, tying, tightening, gluing, welding and embedding. In some cases, a ring, a perforated sphere, or a perforated polyhedron is inserted into the joint and connected through the flexible joint of the connecting member. The means of joining
Two or more types may be used in combination.

The advantages of forming a space truss using the connecting member having the above-described structure are as follows. (1) To assemble the space truss members automatically
Various 2D and 3D forms can be easily assembled. (2) The joining of the members is extremely simplified by using a flexible wire rod at the node. (3) Since the nodes freely rotate, there is no need for bending or pressing or other forming work. (4) Since the connecting member is an irregularly shaped member, its nodes can follow any plane or curved surface of the facing member, and if the nodes are connected, a rigid straight line portion constitutes a space truss. In addition, the securing of accuracy in the manufacturing process of the member is eased. (5) When a flexible member is used for part or all of the facing material, or when the connection between the intermediate connecting material and the facing material slides, a movable solid body capable of changing curvature, folding, or expanding. A truss composite board is made. (6) When prestress is introduced into the facing material, the strength and rigidity of the three-dimensional truss composite plate increase. Further, the deformation of the movable space truss composite plate can be fixed by prestress.

The stress distribution of the connecting member in the three-dimensional truss composite plate thus configured is as follows. (1) If only the wires at the nodes are joined, the flexible wires share the tensile stress, and the rigid straight portions share the compressive stress. (2) If the connection is made to include the end of the rigid straight portion of the connecting member at the node, the compressive stress is shared by the rigid straight portion, and the tensile stress is shared by the rigid straight portion and the flexible wire. If the flexible wire is weak, the rigid straight section will carry both tensile and compressive stress. In this case, the weak flexible wire is used as an auxiliary material for forming the three-dimensional truss composite plate.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings used to explain the embodiments of the present invention show a part of a space truss composite plate. [Structural Example of Connecting Material] FIG. The connecting member 1 of (a) is formed by connecting a large number of pipes of a predetermined length through a wire in a line, the pipe is a rigid straight member 2, the wire is a flexible wire 3, and the space between adjacent pipes is Is a flexible node 4 that rotates freely. (B) The connecting member 1 is formed by forming the diameter of a wire of a predetermined length to a large diameter at a predetermined interval along the length direction, the wire is a flexible wire 3, and the large diameter portion of the wire is It is a rigid straight portion, and the small diameter portion of the initial diameter left between the adjacent large diameter portions becomes a flexible node 4 that freely rotates. The connecting member 1 of (c) is obtained by narrowing down a local portion of a pipe of a predetermined length at a predetermined interval, and the pipe is made of a rigid straight material 2.
Thus, a flexible node 4 in which the throttle portion of the pipe rotates freely. The connecting member 1 shown in (d) is obtained by connecting a number of rigid straight members 2 in a row by rotating node members 4 and is formed in a chain shape.

[Example of Net Configuration] FIG. 2 shows a net composed of a large number of connecting members 1, each of which has a node 4.
And the mesh is triangular. FIG. 3 shows a net composed of a large number of connecting members 1, each of which is connected at a node 4 and has a square mesh. FIG. 4 shows a net composed of a number of rigid straight members 2 and flexible nodes 4, each of the nodes 4 being connected to each other, forming a mesh of six triangles. FIG. 5 shows a net constituted by a large number of connecting members 1, each of which is connected at a node 4, and the mesh is a mixture of hexagons and triangles.

FIG. 6 shows an example of the arrangement of the intermediate material A and the facing materials B and C. FIG. 6A is a plan view, and FIG. 6B is a right side view. , (C) is a bottom view, and the intermediate material A is not yet bonded to the facing materials B, C.
The intermediate member A is composed of parallel rows of connecting members in which a number of connecting members 1 are arranged in parallel at predetermined intervals, and the nodes 4 of the connecting members 1 in each row are located at positions aligned with each other. Facing material B
Is obtained by intersecting two parallel rows of connecting members at right angles at the nodes 4 and 4, and has a lattice shape as a whole.
The facing material C has the same configuration as the facing material B.

[Example 1 of Three-dimensional Composite Truss] FIGS. 7A and 7B show an example of a three-dimensional composite truss plate, wherein FIG. 7A is a plan view, FIG.
(c) is a plan view. In the three-dimensional composite truss, in the arrangement example of the intermediate member A and the facing members B and C shown in FIG. 6, the node 4 of the two connecting members 1 adjacent to the intermediate member A is defined as the intersection of the facing members B and C.
(Node 4). The sub-characters a, b, c, and
d, e, and f are added to indicate nodes connected to each other. Thereby, each connecting member 1 of the intermediate member A forms a quadrangular pyramid three-dimensional lattice. When the facing members B and C of the three-dimensional truss composite plate are formed of a connecting member composed of a pipe and a wire, the rigidity can be arbitrarily increased by pulling the wire and introducing a prestress. If the connection between the node of the intermediate member A and the node of the facing members B and C is made slidable, the wires of the facing members B and C are appropriately loosened to obtain the curvature of the three-dimensional truss composite plate. Or be foldable.

[Example 2 of Three-dimensional Composite Truss] FIGS. 8A and 8B show another example of the three-dimensional composite truss plate. FIG. 8A is a plan view, FIG. 8B is a right side view, and FIG. In this three-dimensional truss composite plate, the mesh shown in FIG. 3 uses a quadrilateral connecting member net as the intermediate member A, and is overlap-joined so that two parallel rows of connecting members intersect at each node. Are used as facing materials B and C, and the facing materials B and C are arranged facing each other with the intermediate material A interposed therebetween, and the nodes of the net of the intermediate material A are alternately placed on the facing materials B and C. C
Are connected to the intersections (nodes) of the lattice of.

[Example 3 of Three-dimensional Composite Truss] FIGS. 9A and 9B show still another example of the three-dimensional composite truss plate. FIG. 9A is a plan view, FIG. 9B is a right side view, and FIG. This three-dimensional truss composite board uses the quadrilateral net of the connecting material of FIG. 3 as the intermediate material A, and uses two sets of parallel rows of flexible wires as the facing material B on one side of the intermediate material A, A square net of a connecting material is used as the facing material C on the other side of the intermediate material A, and a node of the connecting material net of the intermediate material A is defined as an intersection (node) of a parallel row of the facing material B and a facing material. It is constructed by alternately connecting to intersections (nodes) of C nets. Since this three-dimensional truss composite plate is indefinite, it can follow a curved surface. If the connection between the node of the intermediate material A and the flexible wire of the facing material B can be slid, the curvature of the three-dimensional truss composite plate can be arbitrarily changed by tensioning or relaxing the flexible wire. Can be done.

[Example 4 of Three-dimensional Composite Truss] FIGS. 10A and 10B show another example of the three-dimensional composite truss plate, wherein FIG. 10A is a plan view, FIG. 10B is a right side view, and FIG. This three-dimensional truss composite board,
Using the quadrilateral net of the connecting material of FIG. 3 as the intermediate material A,
A square net made of a flexible wire is used as the facing materials B and C, and the nodes of the net of the intermediate material A are alternately connected to the intersections of the nets of the facing materials B and C. Since this three-dimensional truss composite plate is irregular, it can follow any curved surface and can be completely folded at all nodes. If tension is applied to the nets of the facing materials B and C as required, the net becomes a standard shape and rigidity can be imparted.

[Example 5 of Three-dimensional Composite Truss] FIGS. 11A and 11B show still another example of the three-dimensional composite truss plate, wherein FIG. 11A is a plan view, FIG. 11B is a right side view, and FIG. In this three-dimensional truss composite plate, facing materials B and C composed of a square net and a plate-like body are arranged on two surfaces facing each other with an intermediate material A composed of a quadrilateral net serving as a connecting member interposed therebetween. The nodes of the net of the intermediate material A are alternately connected to the intersections (nodes) of the nets of the facing materials B and C. In this example, the square nets arranged on both opposing surfaces are auxiliary members for connecting the nodes of the intermediate member to predetermined positions of the plate-like body. This composite plate is a new type of sandwich panel in which a three-dimensional lattice is used as a core material and a three-dimensional truss structure is integrated with the plate members on both sides.

[0027]

The space truss composite plate of the present invention configured as described above has the following advantages. (1) In forming a three-dimensional lattice of a three-dimensional truss structure, a flexible node that freely rotates many rigid straight members
The use of the connecting members connected in rows eliminates the necessity of bending members or the like as in the conventional three-dimensional truss structure. In addition, since the joints between the nodes of the three-dimensional lattice serving as the core and the facing material are aligned on the same plane, the joints can be easily automated by a simple and simple joining method, and the three-dimensional truss composite plate can be efficiently and economically manufactured. It can be industrially produced. (2) Since the nodes of the three-dimensional lattice automatically formed without forced machining are free to rotate, the core of the three-dimensional lattice must accurately follow not only the plane of the facing material but also a curved surface with a wide range of curvature. Can be. Therefore, a lightweight and high-strength three-dimensional truss composite plate having a flat surface and a curved surface can be formed. (3) Since the nodes of the three-dimensional lattice freely rotate, the curvature of the three-dimensional truss composite plate can be easily changed, folded, or unfolded by relaxation or tension of the facing material or sliding of the joint between the three-dimensional lattice and the facing material. Therefore, a lightweight movable three-dimensional truss composite plate can be obtained. (4) A new type of sandwich panel can be manufactured by adding plate members to both sides of the three-dimensional lattice or three-dimensional truss. (5) Since the flat, curved and movable space truss composite plates can be industrially produced more easily and economically than before, the usefulness of the space truss structure, which is excellent in structural mechanics, can be evaluated only in the structural field of construction. Instead, it can be used to the fullest in a wide range of fields such as building parts, fences, furniture, containers, vehicle bodies, hulls, and airframes. (6) Furthermore, the three-dimensional truss composite board of the present invention is lighter and stronger than other composite boards that have been conventionally produced, and is hollow or movable, so that ventilation, wiring, and the like that are not available in other composite boards. Has new features such as plumbing. This three-dimensional truss composite board opens up new industries,
It offers improved productivity and performance in a wide range of applications for the product.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a connecting member used for carrying out the present invention.

FIG. 2 is a front view showing an example of a net used for implementing the present invention.

FIG. 3 is a front view showing another example of a net used for implementing the present invention.

FIG. 4 is a front view showing another example of the net used for implementing the present invention.

FIG. 5 is a front view showing still another example of the net used for implementing the present invention.

FIGS. 6A and 6B show an arrangement state of an intermediate material and a facing material used in one embodiment of the present invention before joining, and FIG.
(B) is a right side view, and (c) is a bottom view.

7 shows a three-dimensional truss composite plate obtained by combining the intermediate member and the facing member shown in FIG. 6, (a) is a plan view, (b)
Is a right side view, and (c) is a bottom view.

FIG. 8 shows a space truss composite plate obtained in another embodiment of the present invention, wherein (a) is a plan view, (b) is a right side view,
(C) is a bottom view.

FIG. 9 shows a space truss composite plate obtained in still another embodiment of the present invention, wherein (a) is a plan view, (b) is a right side view,
(C) is a bottom view.

FIG. 10 shows a space truss composite plate obtained in another embodiment of the present invention, (a) is a plan view, (b) is a right side view,
(C) is a bottom view.

FIG. 11 shows a space truss composite plate obtained in still another embodiment of the present invention, wherein (a) is a plan view, (b) is a right side view, and (c) is a bottom view.

[Explanation of symbols]

 1 Connecting material 2 Rigid straight material (straight part) 3 Flexible wire 4 Flexible node A Intermediate material B One facing material C The other facing material

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[Procedure amendment]

[Submission date] February 28, 2000 (200.2.2
8)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

[0013] The sheet material is a thin and flexible flat or curved member. Examples of the sheet material include a thin plate, a film, a film, paper, a woven fabric, and a nonwoven fabric. Further, the caking fluid may be solidified to form a sheet material.
The plate member is a rigid flat or curved member. Plates include metal plates, synthetic resin plates, cement plates,
It reinforced concrete plate, FRC, FRP, plates, plywood, a plasterboard, sheet glass and other complex plate. Further, the caking fluid may be solidified to form a plate-like material.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0022

[Correction method] Change

[Correction contents]

[0022] [Example of three-dimensional truss composite plate 1] FIG. 7 shows an example of a stereoscopic truss composite board, (a) shows the plan view, (b) a right side view, (c) is a bottom view. This three-dimensional truss composite plate is constructed such that, in the arrangement example of the intermediate member A and the facing members B and C shown in FIG. 6, the node 4 of the two connecting members 1 adjacent to the intermediate member A is the intersection of the facing members B and C. (Node 4). The sub-characters a, b, and
c, d, e, and f are added to indicate nodes connected to each other. Thereby, each connecting member 1 of the intermediate member A forms a quadrangular pyramid three-dimensional lattice. When the facing members B and C of the three-dimensional truss composite plate are formed of a connecting member composed of a pipe and a wire, the rigidity can be arbitrarily increased by pulling the wire and introducing a prestress.
If the connection between the node of the intermediate member A and the node of the facing members B and C is made slidable, the wires of the facing members B and C are appropriately loosened to obtain the curvature of the three-dimensional truss composite plate. Or be foldable.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0023

[Correction method] Change

[Correction contents]

[0023] Figure 8 [Example 2 of a three-dimensional truss composite plate] shows another example of a space truss composite board, (a) shows the plan view, (b) a right side view, (c) is a bottom view. This three-dimensional truss composite board,
A square lattice formed by connecting and joining two parallel rows of rigid straight members so as to intersect at each node using a quadrilateral connecting member net as an intermediate member A shown in FIG. B and C, the two facing materials B and C are arranged facing each other with the intermediate material A sandwiched in the middle, and the nodes of the net of the intermediate material A are alternately intersected by the lattice of the two facing materials B and C ( (Node).

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

[Example 3 of Space Truss Composite Plate ] FIGS. 9A and 9B show still another example of the space truss composite plate. FIG. 9A is a plan view, FIG. 9B is a right side view, and FIG. 9C is a bottom view. . This three-dimensional truss composite board uses the quadrilateral net of the connecting material of FIG. 3 as the intermediate material A, and uses two sets of parallel rows of flexible wires as the facing material B on one side of the intermediate material A, A square net of a connecting material is used as the facing material C on the other side of the intermediate material A, and a node of the connecting material net of the intermediate material A is defined as an intersection (node) of a parallel row of the facing material B and a facing material. It is constructed by alternately connecting to intersections (nodes) of C nets. Since this three-dimensional truss composite plate is indefinite, it can follow a curved surface. Further, if the connection between the node of the intermediate material A and the flexible wire of the facing material B can be slid, the curvature of the three-dimensional truss composite plate is arbitrarily changed by tensioning or relaxing the flexible wire. be able to.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0025

[Correction method] Change

[Correction contents]

[0025] [Example of three-dimensional truss composite plate 4] FIG. 10 shows another example of a space truss composite board, (a) shows the plan view, (b) a right side view, (c) is a bottom view. This three-dimensional truss composite board uses the quadrilateral net of the connecting material of FIG. 3 as the intermediate material A, and uses the square net made of a flexible wire as the facing materials B and C. It is constituted by alternately connecting to the intersection of the nets of both facing materials B and C. Since this three-dimensional truss composite plate is irregular, it can follow any curved surface and can be completely folded at all nodes. If tension is applied to the nets of the facing materials B and C as required, the net becomes a standard shape and rigidity can be imparted.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

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[0026] Figure 11 [Example 5 of space truss composite plate] indicates still another example of a space truss composite board, (a) is a plan view, (b)
Is a right side view, and (c) is a bottom view . In this three-dimensional truss composite plate, facing materials B and C composed of a square net and a plate-like body are arranged on two surfaces facing each other with an intermediate material A composed of a quadrilateral net serving as a connecting member interposed therebetween. The nodes of the net of the intermediate material A are alternately connected to the intersections (nodes) of the nets of the facing materials B and C. In this example, the square nets arranged on both faces
It is an auxiliary material for connecting the node of the intermediate material to a predetermined position of the plate-like body. This composite plate is a new type of sandwich panel in which a three-dimensional lattice is used as a core material and a three-dimensional truss structure is integrated with the plate members on both sides. ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] March 6, 2000 (200.3.6)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

[0013] The sheet material is a thin and flexible flat or curved member. Examples of the sheet material include a thin plate, a film, a film, paper, a woven fabric, and a nonwoven fabric. Further, the caking fluid may be solidified to form a sheet material.
The plate member is a rigid flat or curved member. Plates include metal plates, synthetic resin plates, cement plates,
There are reinforced concrete boards , FRC, FRP, boards, plywood, gypsum boards, sheet glass and other composite boards. Further, the caking fluid may be solidified to form a plate-like material.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction contents]

[Example of Net Configuration] FIG. 2 shows a net composed of a large number of connecting members 1, each of which has a node 4.
And the mesh is triangular. FIG. 3 shows a net composed of a large number of connecting members 1, each of which is connected at a node 4 and has a square mesh. FIG. 4 shows a net composed of a number of rigid straight members 2 and flexible nodes 4, each of which is connected to one another,
The mesh is hexagonal . FIG. 5 shows a net constituted by a large number of connecting members 1, each of which is connected at a node 4, and the mesh is a mixture of hexagons and triangles.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0022

[Correction method] Change

[Correction contents]

[0022] [Example of three-dimensional truss composite plate 1] FIG. 7 shows an example of a stereoscopic truss composite board, (a) shows the plan view, (b) a right side view, (c) is a bottom view. This three-dimensional truss composite plate is constructed such that, in the arrangement example of the intermediate member A and the facing members B and C shown in FIG. 6, the node 4 of the two connecting members 1 adjacent to the intermediate member A is the intersection of the facing members B and C. (Node 4). The sub-characters a, b, and
c, d, e, and f are added to indicate nodes connected to each other. Thereby, each connecting member 1 of the intermediate member A forms a quadrangular pyramid three-dimensional lattice. When the facing members B and C of the three-dimensional truss composite plate are formed of a connecting member composed of a pipe and a wire, the rigidity can be arbitrarily increased by pulling the wire and introducing a prestress.
If the connection between the node of the intermediate member A and the node of the facing members B and C is made slidable, the wires of the facing members B and C are appropriately loosened to obtain the curvature of the three-dimensional truss composite plate. Or be foldable.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0023

[Correction method] Change

[Correction contents]

[ Example 2 of Space Truss Composite Plate ] FIGS. 8A and 8B show another example of the space truss composite plate. FIG. 8A is a plan view, FIG. 8B is a right side view, and FIG. 8C is a bottom view . This three-dimensional truss composite board,
The mesh shown in Fig. 3 uses a quadrilateral connecting member net as the intermediate member A, and faces a square lattice formed by overlapping and joining two parallel sets of rigid straight members so as to intersect at each node. Used as materials B and C, the two facing materials B and C are arranged facing each other with the intermediate material A interposed therebetween, and the nodes of the net of the intermediate material A are alternately intersected by the grid of the two facing materials B and C. (Node).

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

[ Example 3 of Space Truss Composite Plate ] FIGS. 9A and 9B show still another example of the space truss composite plate. FIG. 9A is a plan view, FIG. 9B is a right side view, and FIG. 9C is a bottom view. . This three-dimensional truss composite board uses the quadrilateral net of the connecting material of FIG. 3 as the intermediate material A, and uses two sets of parallel rows of flexible wires as the facing material B on one side of the intermediate material A, A square net of a connecting material is used as the facing material C on the other side of the intermediate material A, and a node of the connecting material net of the intermediate material A is defined as an intersection (node) of a parallel row of the facing material B and a facing material. It is constructed by alternately connecting to intersections (nodes) of C nets. Since this three-dimensional truss composite plate is indefinite, it can follow a curved surface. Further, if the connection between the node of the intermediate material A and the flexible wire of the facing material B can be slid, the curvature of the three-dimensional truss composite plate is arbitrarily changed by tensioning or relaxing the flexible wire. be able to.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0025

[Correction method] Change

[Correction contents]

[0025] [Example of three-dimensional truss composite plate 4] FIG. 10 shows another example of a space truss composite board, (a) shows the plan view, (b) a right side view, (c) is a bottom view. This three-dimensional truss composite board uses the quadrilateral net of the connecting material of FIG. 3 as the intermediate material A, and uses the square net made of a flexible wire as the facing materials B and C. It is constituted by alternately connecting to the intersection of the nets of both facing materials B and C. Since this three-dimensional truss composite plate is irregular, it can follow any curved surface and can be completely folded at all nodes. If tension is applied to the nets of the facing materials B and C as required, the net becomes a standard shape and rigidity can be imparted.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction contents]

[ Example 5 of Space Truss Composite Plate] FIG. 11 shows still another example of the space truss composite plate, (a) is a plan view, (b)
Is a right side view, and (c) is a bottom view . In this three-dimensional truss composite plate, facing materials B and C composed of a square net and a plate-like body are arranged on two surfaces facing each other with an intermediate material A composed of a quadrilateral net serving as a connecting member interposed therebetween. The nodes of the net of the intermediate material A are alternately connected to the intersections (nodes) of the nets of the facing materials B and C. In this example, the square nets arranged on both faces
It is an auxiliary material for connecting the node of the intermediate material to a predetermined position of the plate-like body. This composite plate is a new type of sandwich panel in which a three-dimensional lattice is used as a core material and a three-dimensional truss structure is integrated with the plate members on both sides.

Claims (1)

[Claims] 1. A parallel row of connecting members formed by connecting a large number of rigid straight members of a predetermined length in a single row with freely rotating flexible nodes, and a plurality of parallel rows intersecting at the nodes of the connecting members. Or the connecting material net as an intermediate material, a parallel row of the connecting material or wire, a plurality of sets of intersecting parallel rows of the connecting material or wire, a net of the connecting material or wire,
The facing material is a lattice, a sheet-like material, a plate-like material, or a solidifying fluid, and the facing material is disposed on two surfaces facing each other with the intermediate material interposed therebetween. A three-dimensional truss composite plate joined to a predetermined position on the facing material.