RU107213U1 - FOLDED MULTI-LAYER PANEL FILLER - Google Patents

Abstract

 A folded filler of a multilayer panel, consisting of repeating fragments formed by edges interconnected by edges, characterized in that the structure of the repeating fragments has a fourth degree of axial symmetry, and each of the fragments consists of a square face located in the center of the fragment connected to four rectangular faces between which there are four triangular faces that form a square on the scan, while the triangular faces are connected along the diagonal of the square, the passage at an angle of 45 ° with respect to the edges of rectangular faces, and along a broken line that determines the best density of the arrangement of repeating fragments in the structure, which consists of two equal segments, two vertices of which are the vertices of adjacent rectangular faces, and the middle vertex forming a kink lies at the intersection with the diagonal of the square, while the fragments are interconnected along the edges with the help of a tape consisting of square and rectangular faces, which combines the fragments with the formation of a filler structure .

Description

The utility model relates to the field of vehicles and construction, in particular to multi-layer panels with lightweight aggregate.

Known folded aggregate for a multilayer panel with a cellular structure, obtained by converting a zigzag corrugation by introducing into the structure of ribbon rows of rectangular elements (copyright certificate SU 975961 Е04С 2/36 В32В 3/12, publ. 11/23/1982. Bull. No. 4) . It is made of sheet material, has a relief surface made up of flat faces in the form of parallelograms, the filler has a folded structure that unfolds on a plane without gaps and overlays.

The disadvantages of such a filler are: different geometric and, accordingly, mechanical properties in orthogonal directions, the absence of faces in the envelope surfaces of the filler block, and as a result, the low strength of the connection with the skin, the inability to lay the filler block on a convex surface of double curvature, since the filler forms a saddle during bending .

Known folded aggregate for a multilayer panel with a cellular structure (copyright certificate SU 1070285 Е04С 2/32, publ. 30.01.1984. Bull. No. 4).

The disadvantages of such a filler are: the impossibility of obtaining a block with a flat shape, different geometric and, accordingly, mechanical properties in orthogonal directions, the impossibility of laying the filler block on a convex surface of double curvature, since when bending, the filler forms a saddle shape, the impossibility of manufacturing a block with a deep relief in relation to dimensions structural elements of the placeholder.

Known cellular aggregate of a multilayer panel (copyright certificate SU 1320360 E04C 2/84, publ. 06/30/1987. Bull. No. 24).

The disadvantage of the filler is that it does not rotate on a plane and is made by drawing. For this reason, its production from high-strength structural materials is difficult.

Known folded filler of a multilayer panel with a cellular structure (copyright certificate SU 975960 Е04С 2/32, publ. 11/23/1982. Bull. No. 43).

In this placeholder, repeating fragments are arranged in rows. In the envelope surfaces of the aggregate block there are faces that allow to increase the area of the connection with the casing. The geometrical properties of the aggregate make it possible to produce structures with different block heights in relation to the dimensions of its structural elements. This placeholder is taken as a prototype.

The disadvantages of the filler are: different geometric and, accordingly, mechanical properties in the orthogonal directions of the block - this is a consequence of the fact that its repeating fragment has axial symmetry only of the second degree; the impossibility of laying the aggregate block on a convex surface of double curvature, since when bent, the aggregate forms a saddle; low strength and rigidity of the filler during transverse compression of the panel, since it does not have structural elements that directly connect the upper and lower cladding; the edges for connecting to the skin have a slight surface with respect to the aggregate block.

The technical result, which is claimed by the claimed utility model, is to increase the efficiency of the folded filler of a multilayer panel: obtaining the same mechanical characteristics in the orthogonal directions of the panel, providing the ability to lay the block on a double curvature surface to form curved panels, increasing the rigidity of the filler, increasing the strength of the sheath joint with a filler by increasing the area of faces located on the surface of the block Itel.

The technical result is achieved by the fact that in the folded filler of a multilayer panel consisting of repeating fragments formed by faces interconnected along the edges, the new one is that the structure of the repeating fragments has a fourth degree of axial symmetry, and each of the fragments consists of a square face located in the center of the fragment connected to four rectangular faces, between which there are four triangular faces that form a square on the scan, while the triangular faces are connected each other along the diagonal of the square, passing at an angle of 45 ° relative to the edges of the rectangular faces, and along the broken line, which determines the best density of the location of the repeating fragments in the structure, which consists of two equal segments, the two vertices of which are the vertices of the neighboring rectangular faces, and the middle vertex forming a kink lies at the intersection with the diagonal of the square, while the fragments are interconnected along the edges using a tape consisting of square and rectangular faces, which combines the fr agents with the formation of a filler structure.

The essence of the utility model is shown in figure 1 - figure 2, where:

Figure 1 is a well-known folded filler of a multilayer panel (adopted as a prototype);

Figure 2 - the claimed utility model;

Here: 1 - placeholder, taken as a prototype; 2 - scan aggregate adopted for the prototype; 3 - a repeating fragment of the placeholder, taken as a prototype; 4 - scan of a repeating fragment of the placeholder, taken as a prototype; 5 - placeholder of the claimed utility model; 6 - scan placeholder of the claimed utility model; 7 - a repeating fragment of the placeholder of the claimed utility model; 8 - scan of a repeating fragment of the placeholder of the claimed utility model; 9 - square face in the center of the repeating fragment 7; 10 - rectangular faces of fragment 7; 11, 12, 13, 14 — triangular faces of fragment 7; 15 - ribbons consisting of square and rectangular faces; 16 - filler ribs and, accordingly, their trace on the scan; 17 - faces on the lower surface of the block; OZ is the axis of symmetry; T is the point of intersection of the axis of symmetry with a square face 9.

Figure 2 shows the inventive pleated aggregate 5 of the multilayer panel. It consists of repeating fragments 7. The repeating fragment is formed by a square face 1 to which rectangular faces 10 are attached and between which there are triangular faces 11, 12, 13, 14. The repeating fragment has a fourth degree of axial symmetry. This means that when the repeating fragment rotates around the axis of symmetry passing through the point T, for the contour to completely coincide, it must be turned through an angle α, which is equal to one fourth of the full revolution, i.e. . This symmetry property provides the same geometric properties of the structure in two directions: OX and OY. Repeating fragments are interconnected by ribbons 15, consisting of square and rectangular faces. The structure of the aggregate is folded, that is, it has a flat scan 6 without gaps and overlaps. The filler can be made by folding from sheet materials: cardboard, paper, aramid paper such as Nomex®, glass, carbon, basalt plastic and foil.

The advantage of the declared filler is that it has the same geometric properties in two orthogonal directions, which is ensured by the fourth degree of axial symmetry of its repeating fragments. Due to these geometric properties, the multilayer panel will have the same mechanical properties in orthogonal directions.

The symmetry properties of the aggregate make it possible to lay it from the state of a flat block onto a surface of double curvature.

The presence of faces 10 directly connecting the skin provides increased structural rigidity.

Facets 9, 17 in the surfaces of the block with a large contact area provide high strength joints with the skin.

Thus, the proposed folded filler of the multilayer panel is characterized by the same geometric and mechanical properties in orthogonal directions, the possibility of laying from the state of a flat block on a double curvature surface, increased structural rigidity, high strength of the connection with the casing and at the same time has high adaptability and is made from a single piece only bending operations along the marking lines (folding) without assembly and gluing procedures.

Claims (1)

A folded filler of a multilayer panel, consisting of repeating fragments formed by edges interconnected by edges, characterized in that the structure of the repeating fragments has a fourth degree of axial symmetry, and each of the fragments consists of a square face located in the center of the fragment connected to four rectangular faces between which there are four triangular faces that form a square on the scan, while the triangular faces are connected along the diagonal of the square, the passage at an angle of 45 ° with respect to the edges of rectangular faces, and along a broken line that determines the best density of the arrangement of repeating fragments in the structure, which consists of two equal segments, two vertices of which are the vertices of adjacent rectangular faces, and the middle vertex forming a kink lies at the intersection with the diagonal of the square, while the fragments are interconnected along the edges using a tape consisting of square and rectangular faces, which combines the fragments with the formation of a filler structure .