Ultrahigh-storage-ratio folding and unfolding array structure based on hexagonal folding and unfolding units

Abstract

The invention discloses a folding and unfolding array structure with an ultrahigh storage ratio based on hexagonal folding and unfolding units, which is a networking array constructed by performing modular networking on a plurality of same hexagonal folding and unfolding units capable of being defined in a parameterized manner through shared creases, each hexagonal folding and unfolding unit comprises sixteen plates, the creases are formed between the adjacent plates, and the number of the plates is six. And a hinge is arranged at the position of the crease to realize folding and unfolding. Through the innovative hexagonal folding and unfolding units which are coupled with four-fold paper folding patterns and six-fold paper folding patterns and are subjected to parameterization design, the characteristics of ultrahigh storage ratio and shape editability are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of modular foldable array structures, and in particular to a foldable array structure with an ultra-high storage ratio, specifically a modular spatially expandable structure based on hexagonal foldable units, which is a thick plate modular foldable array structure that can be edited in its unfolded shape, has unlimited expansion capabilities and an ultra-high storage ratio. Background Art

[0002] An expandable structure is a structure with a self-variable configuration. Under the action of an external driving force, the expandable structure can gradually transform from a highly folded state to a fully extended deployed state through a preset motion path, and finally be fixed to a stable working configuration through a locking mechanism.

[0003] When fully collapsed and deployed, the deployable structure behaves as a stable "structure," while when deployed, it exhibits the characteristics of a "mechanism" with freedom of movement. The deployable structure can be easily transported and stored in its non-operating state, while being able to perform its intended purpose in its operational state.

[0004] As an innovative configuration that integrates the motion characteristics of the mechanism and the structural bearing capacity, the deployable structure has effectively alleviated the contradiction between payload space and carrying capacity through origami form transformation in the field of modern aerospace engineering, and has been widely used in satellite antennas, solar panels and other equipment.

[0005] However, with the increasing complexity of deep space exploration missions, the demand for deployable structures with high folding / deployment ratios, high precision, lightweight design, and editable unfolded shapes is becoming increasingly prominent. While traditional methods for deployable structure design, such as over-constrained networking, conventional origami, and paper cutting, have achieved some success, they still face challenges such as a single unfolded shape, uneven working surfaces, and limited folding / deployment ratios. Summary of the Invention

[0006] The present invention aims to overcome the shortcomings and defects of existing technologies by providing a foldable array structure with an ultra-high storage ratio and shape editability through multi-module networking. This ultra-high storage ratio and shape editability are achieved by coupling four- and six-fold origami patterns with innovative hexagonal foldable units and implementing parametric design.

[0007] The present invention is achieved in that:

[0008] A foldable array structure with an ultra-high storage ratio based on hexagonal foldable units is a networked array constructed by modular networking of multiple parameterizable identical hexagonal foldable units through shared creases. The hexagonal foldable units contain sixteen plates, with creases formed between adjacent plates, and hinges installed at the creases to achieve folding and expansion.

[0009] Preferably, the folds are composed of six four-folds and one six-fold; under the condition of zero thickness, the sixteen plates include eight isosceles triangular plates and eight parallelogram plates; the parallelogram plates are divided into two groups, four in each group, connected by short sides to form a W-shaped structure; the two W-shaped structures are symmetrical, and the four isosceles triangular plates are connected by folds through four inner V-shaped areas, and the four isosceles triangular plates are connected by folds through two outer V-shaped areas; the base edges of the two isosceles triangular plates connected by each outer V-shaped area and the two isosceles triangular plates of the two inner V-shaped areas with opposite openings are shared.

[0010] Preferably, each of the four folds is located at the connection position between two mutually connected parallelogram plates and two isosceles triangle plates, and the six folds are located at the connection position between two mutually connected isosceles triangle plates and four parallelogram plates.

[0011] Preferably, the height of the parallelogram plate is consistent with the height of the isosceles triangle plate; under the thickness condition, the thickness of the isosceles triangle plate is t1, the parallelogram plate has a plate surface step, the step end thickness is t2, the non-step end thickness is t1, t2=2×t1.

[0012] Preferably, the side length and height size parameters of the plurality of parallelogram plates are consistent, and the side length and height size parameters of the plurality of isosceles triangle plates are consistent.

[0013] Preferably, the folds are composed of eight four-fold folds; under the condition of zero thickness, the sixteen plates include four isosceles triangular plates, four isosceles trapezoidal plates and eight parallelogram plates; the parallelogram plates are divided into two groups, four in each group, connected by short sides to form a W-shaped structure; the two W-shaped structures are symmetrical, and the four isosceles trapezoidal plates are connected by folds through four inner V-shaped areas, and the four isosceles triangular plates are connected by folds through two outer V-shaped areas; the bottom edges of the two isosceles triangular plates connected by each outer V-shaped area are shared, and the lower bottom edges of the two isosceles trapezoidal plates in the two inner V-shaped areas with opposite openings are shared.

[0014] Preferably, each of the four folds is located at a connection position between two mutually connected parallelogram plates and two isosceles trapezoidal plates.

[0015] Preferably, the height of the parallelogram plate is consistent with the height of the isosceles trapezoidal plate; under the thickness condition, the thickness of the isosceles triangle plate is t1, and the parallelogram plate has a plate surface step, wherein the thickness of the step end is t2, and the thickness of the non-step end is t1, t2=2×t1; the isosceles trapezoidal thick plate has a plate surface step, and the thickness at the step is t3, and t3=3×t1.

[0016] Preferably, the side length and height dimensional parameters of the plurality of parallelogram plates are consistent, the side length and height dimensional parameters of the plurality of isosceles triangle plates are consistent, and the base, waist and height dimensional parameters of the plurality of isosceles trapezoidal plates are consistent.

[0017] Preferably, the hinge includes two groups of folding joints and a sleeve. The two groups of folding joints are arranged at both ends of the sleeve apart along the axis of the sleeve, and are rotationally connected to the sleeve through bearings. Pins are arranged at both ends of the sleeve and connected to the end of the sleeve for axial limitation of the folding joints. The two groups of folding joints are each connected and fixed to the plate body of the hexagonal folding unit.

[0018] This invention achieves an ultra-high storage ratio and shape-editable features by combining four- and six-fold origami patterns with an innovative parametrically designed hexagonal folding unit. This hexagonal folding unit can be expanded into a large array structure through flexible modular networking, enabling coordinated overall deployment with minimal degrees of freedom. Furthermore, due to its thick plate design, the structure not only achieves a flat work surface but also provides the high strength and load capacity required for engineering applications.

[0019] The modular space-deployable structure of the present invention has significant advantages such as the storage ratio increases with module expansion, the unfolded shape can be customized, and it can adapt to different engineering needs. It provides a new technical solution for spacecraft equipment such as space-deployable antennas, solar cell arrays, and deployable robotic arms, and is of great significance for promoting the practical application of foldable structures in aerospace engineering.

[0020] This invention utilizes hexagonal foldable units as modules for networking and splicing, enabling unlimited expansion. This infinitely expandable modular network array offers a significant expansion ratio and deployment area while retaining a relatively low degree of freedom. Furthermore, the hexagonal foldable units can be designed parametrically, allowing the modular network array to be customized in its deployment shape by adding auxiliary units. In addition to the aforementioned advantages, the thick-plate modular network array developed by introducing thickness parameters also provides additional rigidity and strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the folding array composed of a network of hexagonal folding units with four or six folds according to the present invention.

[0022] Figure 2 It is a schematic diagram of the folding array composed of hexagonal folding units based on four folds through modular networking according to the present invention.

[0023] Figure 3 It is a schematic diagram of angle and thickness parameters of the zero thickness / non-zero thickness hexagonal folding unit based on four or six folds of the present invention.

[0024] Figure 4 It is a schematic diagram of angle and thickness parameters of a zero-thickness / non-zero-thickness hexagonal folding unit based on four folds of the present invention.

[0025] Figure 5 It is a schematic diagram of the modular networking array O-1 formed by the hexagonal folding units with four or six folds of the present invention.

[0026] Figure 6 It is a schematic diagram of the folding process of the modular networking array O-1 formed by the hexagonal folding units with four or six folds of the present invention.

[0027] Figure 7 It is a schematic diagram of the modular networking array O-2 derived from the hexagonal folding unit with four or six folds of the present invention.

[0028] Figure 8 It is a schematic diagram of the folding process of the derivative modular networking array O-2 derived from the hexagonal folding unit with four or six folds of the present invention.

[0029] Figure 9 This is a schematic diagram of the further expanded networking of the modular networking array O-1 formed by the hexagonal folding units with four or six folds of the present invention.

[0030] Figure 10 This is a schematic diagram of the further expanded networking of the modular networking array O-2 formed by the hexagonal folding units with four or six folds of the present invention.

[0031] Figure 11 It is a schematic diagram of the present invention for realizing shape editing in the unfolded state based on a modular networking array formed by hexagonal folding units with four or six folds.

[0032] Figure 12 It is a schematic diagram of the thickened plate structure of the hexagonal folding unit based on four or six folds of the present invention.

[0033] Figure 13 It is a schematic diagram of the thickened plate structure of the hexagonal folding unit based on four folds of the present invention.

[0034] Figure 14 It is a schematic diagram of the connection joints of the thick plate modular networking array O-1 composed of thick plates based on hexagonal folding units of the present invention.

[0035] Figure 15 This is a schematic diagram of the main structure of the thick plate modular networking array O-1 composed of thick plates of hexagonal folding units based on four folds of the present invention.

[0036] Figure 16 It is a schematic diagram of the top view of the thick plate modular networking array O-1 composed of thick plates of hexagonal folding units based on four folds of the present invention.

[0037] Figure 17 It is a schematic diagram of the folding process of the thick plate modular networking array O-1 composed of thick plates of hexagonal folding units based on four folds of the present invention.

[0038] Reference numerals:

[0039] 1-Hexagonal folding unit, 2-Modular networking array, 3-Folding joint A, 4-Folding joint B, 5-Bearing, 6-Sleeve, 7-Unit thick plate, 8-Connecting pin. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] In an exemplary embodiment of the present application, the ultra-high storage ratio folding array structure based on hexagonal folding units is a networked array constructed by modular networking of multiple parameterizable identical hexagonal folding units through shared creases. The hexagonal folding units include sixteen plates, creases are formed between adjacent plates, and hinges are installed at the creases to achieve folding and expansion.

[0042] like Figure 1 and Figure 2 As shown, the present invention is based on an ultra-high storage ratio folding array structure of hexagonal folding units, which is a modular networking array inspired by origami. Its hexagonal folding units can be implemented in two ways, one is based on folding of four or six folds, and the other is based on folding of four folds.

[0043] In this embodiment, when the hexagonal folding units are used as modules, they can be networked through common folds to construct a modular network array, such as Figure 1 This is a schematic diagram of the overall structure of the folding array composed of a network of hexagonal folding units 1 with four or six folds according to the present invention. Figure 2 The figure shows a schematic diagram of a folding array formed by modular networking 2 of edges formed by networking hexagonal folding units based on four folds.

[0044] For example, in the embodiment of the present application, for the solution based on four or six folds, the folds are composed of six four-folds and one six-fold; under this folding solution, Figure 3As shown, under the condition of zero thickness, the sixteen plates include eight isosceles triangular plates and eight parallelogram plates; the parallelogram plates are divided into two groups, four in each group, connected by short sides to form a W-shaped structure; the two W-shaped structures are symmetrical, and the four isosceles triangular plates are connected by folds through four inner V-shaped areas, and the four isosceles triangular plates are connected by folds through two outer V-shaped areas; the base edges of the two isosceles triangular plates connected by each outer V-shaped area and the two isosceles triangular plates of the two inner V-shaped areas with opposite openings are shared.

[0045] For details, please refer to Figure 3 As shown, first, under the condition of zero thickness, there are sixteen panels in the hexagonal folding unit, including two types of quadrilateral panels and triangular panels, among which Panel P1, Panel P3, Panel P5, Panel P7, Panel P 10 , Panel P 12 , Panel P 14 With panel P 16 It is a quadrilateral panel, panel P2, panel P4, panel P6, panel P8, panel P9, panel P 11 , Panel P 13 With panel P 15 It is a triangular plate.

[0046] The key design parameters for the hexagonal foldable unit include the base length L1 and height L2 of the quadrilateral panel. The height of the triangle is the same as that of the quadrilateral. The base length of the triangle can be determined by the height L2 and the triangle sector angle α2. The eight triangles in the hexagonal foldable unit have exactly the same dimensional parameters as the eight quadrilateral panels.

[0047] Wherein, each of the four folds is located at the connection position of two mutually connected parallelogram plates and two isosceles triangle plates, and the six folds is located at the connection position of two mutually connected isosceles triangle plates and four parallelogram plates. Figure 3 As shown, the fan angles formed between adjacent folds are α1, α2, α3, and α4; α1 and α4 are the interior angles of the two connected parallelogram plates, and α2 and α4 are the base angles of the two connected isosceles triangle plates; the fan angles formed between adjacent folds are β1, β2, β3, β4, β5, and β6; β1, β3, β4, and β6 are the interior angles of the four connected parallelogram plates, and β2 and β5 are the vertex angles of the two connected isosceles triangle plates; where α1+α2+α3+α4=2π, α1+α3=α2+α4=π; α1=α4, α2=α3; β1+β2+β3+β4+β5+β6=2π, β1+β2+β3=π. By adjusting the fan angle size and length dimensions, a series of hexagonal folding units can be obtained for network splicing.

[0048] In the hexagonal folding unit based on four or six folds of the present application, under the condition of thickness, the thick plate hexagonal folding unit with six folds in the center of the hexagonal folding unit only introduces an additional thickness parameter, and the remaining size parameters are the same as those under the condition of zero thickness, thereby forming a thick plate folding unit, and the thick plate folding unit corresponds to sixteen thick panels, including thick plate Q1, thick plate Q3, thick plate Q5, thick plate Q7, thick plate Q 10 , thick plate Q 12 , thick plate Q 14 With thick plate Q 16 It is a quadrilateral plate, thick plate Q2, thick plate Q4, thick plate Q6, thick plate Q8, thick plate Q9, thick plate Q 11 , thick plate Q 13 With thick plate Q 15 It is a triangular plate.

[0049] The thickness of the triangular plate is t1, while the quadrilateral plate has a stepped surface, with the stepped end having a thickness of t2 and the non-stepped end having a thickness of t1, and the two satisfying the relationship t2 = 2 × t1. The stepped thickness is to meet the folding conditions of the hexagonal folding unit after the axis is offset.

[0050] Illustratively, in the embodiment of the present application, the side lengths and heights of the plurality of parallelogram plates are consistent in size parameters, and the side lengths and heights of the plurality of isosceles triangle plates are consistent in size parameters.

[0051] In the embodiment of the present application, the hexagonal folding unit can be used to combine multiple units to perform modular expansion networking to form a required modular array, such as Figure 5 The figure shows the use of seven hexagonal folding units based on four or six folds (such as Figure 5 The modular networking array O-1 is constructed by networking units 1 to 7) as shown. The modular networking array O-1 is constructed by modular networking of seven identical parameterizable hexagonal folding units through shared folds. Specifically, the six sides of unit 1 are used as the networking positions for splicing. The modular networking array O-1 also has fewer degrees of freedom and the entire array can be folded and expanded. Figure 6 It shows its unfolding process; Figure 7 As shown, auxiliary units 1 and 2 can be obtained by symmetrically cutting the hexagonal folding units based on four and six folds in the vertical direction. Similarly, by using common folds and auxiliary units, a modular folding array O-2 without depressions on both sides can be formed. Therefore, a new polygonal modular array O-2 can be obtained by adding new auxiliary units to the modular network array O-1. Figure 8 The expansion process is shown. Compared with array O-1, it has a more regular expansion shape, that is, there is no concave area on both sides. Figure 8shown.

[0052] In the embodiment of the present application, both the modular array O-1 and the modular array O-2 can be further expanded. Figure 9 、 Figure 10 As shown, it consists of arrays 1 through 4. It can be noted that the array formed by expanding modular array O-2 can fill the blank area at the center of the expanded modular array O-1, and the expanded shape is also more regular. This shows that based on different hexagonal folding units, different folding arrays can be fitted to meet design requirements.

[0053] Furthermore, the task of editing the unfolded shape of the foldable array can be realized by continuously networking and expanding modular foldable arrays of the same and different configurations, such as Figure 11 shown.

[0054] For example, in the embodiment of the present application, for the solution of the hexagonal folding unit based on the folding of four folds, the folds are composed of eight four folds; Figure 4 As shown, under the condition of zero thickness, the sixteen plates include four isosceles triangular plates, four isosceles trapezoidal plates and eight parallelogram plates; the parallelogram plates are divided into two groups, four in each group, and are connected by short sides to form a W-shaped structure; the two W-shaped structures are symmetrical, and the four isosceles trapezoidal plates are connected by folds through four inner V-shaped areas, and the four isosceles triangular plates are connected by folds through two outer V-shaped areas; the base edges of the two isosceles triangular plates connected by each outer V-shaped area are shared, and the lower base edges of the two isosceles trapezoidal plates of the two inner V-shaped areas with opposite openings are shared.

[0055] For details, see Figure 4 As shown, Figure 3 The difference between the hexagonal folding unit shown is that the panels P2, P6, P8, and P 11 With panel P 15 Replacing the four triangular plates with trapezoidal plates and adding the size parameter L2 can also form a hexagonal folding unit with the same function. Figure 3 On this basis, the original six-fold position is replaced by two four-fold positions, and the fan angles satisfy the relationship: τ1+τ2+τ3+τ4=2π, τ1+τ3=τ2+τ4=π; τ1=τ4, τ2=τ3, and the satisfied geometric relationships also include τ1=λ1, τ2=λ2, τ3=λ3, τ4=λ4.

[0056] For example, in the embodiment of the present application, each of the four folds is located at the connection position of two mutually connected parallelogram plates and two isosceles trapezoidal plates.

[0057] For example, in the embodiment of this application, Figure 13As shown, the height of the parallelogram plate is consistent with the height of the isosceles trapezoidal plate; under the thickness condition, for the thick plate hexagonal folding unit with four folds in the center of the folding unit, since the triangular thick plates Q2, Q6, and Q 11 With thick plate Q 15 The corresponding trapezoidal thick plate is transformed. A new step is required at the top side of the isosceles trapezoidal thick plate, i.e., the shortest side. The thickness of the step is changed to t3, and t3 = 3 × t1, to meet the folding conditions of the hexagonal folding unit after the axis offset.

[0058] For example, in an embodiment of the present application, the side length and height dimensional parameters of the multiple parallelogram plates are consistent, the side length and height dimensional parameters of the multiple isosceles triangle plates are consistent, and the base, waist and height dimensional parameters of the multiple isosceles trapezoidal plates are consistent.

[0059] In the embodiment of the present application, the thick plate modular networking array formed by thickening is produced by 3D printing, and the processing material is PLA. The selection of this processing method and material makes the processing of the complex board surface of the array simpler, the structure is stable, the weight is lighter, and the cost is lower.

[0060] For example, in the embodiment of the present application, for the folding structure, the folding position between adjacent thick plates in the thick plate structure is arranged with a rotating hinge for folding, and the rotating hinge is arranged on both sides of the upper and lower surfaces of the thick plate, such as Figure 12 、 Figure 13 The rotary hinge is composed of two sets of folding joints 1 and folding joints 2, with bearings, sleeves and connecting pins, as shown in FIG. Figure 14 According to the above conditions, thick plate hexagonal folding units can be designed and obtained and networked to obtain thick plate modular arrays, as shown in Figure 15 、 Figure 16 shown. Figure 17 This is the expansion and contraction process of the thick plate modular networking array.

[0061] For example, in the embodiment of this application, Figure 14 As shown, the hinge includes two groups of folding joints (including folding joint A3 and folding joint B3) and a sleeve 6. The two groups of folding joints are separated and arranged at the two ends of the sleeve along the axis of the sleeve, and are rotatably connected to the sleeve through bearings 5. Connecting pins 8 are arranged at both ends of the sleeve and connected to the end of the sleeve for axial limitation of the folding joints. The two groups of folding joints are each connected and fixed to the unit thick plate 7 of the hexagonal folding unit.

[0062] In the embodiment of the present application, the rotary hinge uses aluminum machined parts and pins to achieve high-precision matching with the bearings, which can realize the expansion and contraction movement of the thick plate array and has a very high stability.

[0063] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0064] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An ultra-high storage ratio folding array structure based on hexagonal folding units, characterized in that: It is a network array constructed by modular networking of multiple parameterizable identical hexagonal folding units through shared creases. The hexagonal folding units contain sixteen plates, with creases formed between adjacent plates, and hinges installed at the creases to achieve folding and expansion.

2. The ultra-high storage ratio folding array structure based on hexagonal folding units according to claim 1, characterized in that: The folds are composed of six four-fold folds and one six-fold fold; under the condition of zero thickness, the sixteen plates include eight isosceles triangular plates and eight parallelogram plates; the parallelogram plates are divided into two groups, four in each group, connected by short sides to form a W-shaped structure; the two W-shaped structures are symmetrical, and the four isosceles triangular plates are connected by folds through four inner V-shaped areas, and the four isosceles triangular plates are connected by folds through two outer V-shaped areas; the base edges of the two isosceles triangular plates connected by each outer V-shaped area and the two isosceles triangular plates of the two inner V-shaped areas with opposite openings are shared.

3. The ultra-high storage ratio folding array structure based on hexagonal folding units according to claim 2, characterized in that: Each of the four folds is located at a connection position between two mutually connected parallelogram plates and two isosceles triangle plates, and the six folds are located at a connection position between two mutually connected isosceles triangle plates and four parallelogram plates.

4. The ultra-high storage ratio folding array structure based on hexagonal folding units according to claim 2, characterized in that: The height of the parallelogram plate is consistent with the height of the isosceles triangle plate; under the thickness condition, the thickness of the isosceles triangle plate is t1, the parallelogram plate has a plate surface step, the step end thickness is t2, the non-step end thickness is t1, t2=2×t1.

5. The ultra-high storage ratio folding array structure based on hexagonal folding units according to claim 2, characterized in that: The side lengths and heights of the plurality of parallelogram plates are consistent in size parameters, and the side lengths and heights of the plurality of isosceles triangle plates are consistent in size parameters.

6. The ultra-high storage ratio folding array structure based on hexagonal folding units according to claim 1, characterized in that: The folds are composed of eight four-fold folds; under the condition of zero thickness, the sixteen plates include four isosceles triangular plates, four isosceles trapezoidal plates and eight parallelogram plates; the parallelogram plates are divided into two groups, four in each group, connected by short sides to form a W-shaped structure; the two W-shaped structures are symmetrical, and the four isosceles trapezoidal plates are connected by folds through four inner V-shaped areas, and the four isosceles triangular plates are connected by folds through two outer V-shaped areas; the base edges of the two isosceles triangular plates connected by each outer V-shaped area are shared, and the lower base edges of the two isosceles trapezoidal plates in the two inner V-shaped areas with opposite openings are shared.

7. The ultra-high storage ratio folding array structure based on hexagonal folding units according to claim 6, characterized in that: Each of the four folds is located at a connection position between two mutually connected parallelogram plates and two isosceles trapezoidal plates.

8. The ultra-high storage ratio folding array structure based on hexagonal folding units according to claim 6, characterized in that: The height of the parallelogram plate is consistent with the height of the isosceles trapezoidal plate; under the thickness condition, the thickness of the isosceles triangle plate is t1, and the parallelogram plate has a plate surface step, wherein the thickness of the step end is t2, and the thickness of the non-step end is t1, t2=2×t1; the isosceles trapezoidal thick plate has a plate surface step, and the thickness at the step is t3, and t3=3×t1.

9. The ultra-high storage ratio folding array structure based on hexagonal folding units according to claim 6, characterized in that: The side length and height of the plurality of parallelogram plates are consistent, the side length and height of the plurality of isosceles triangle plates are consistent, and the base, waist and height of the plurality of isosceles trapezoid plates are consistent.

10. The ultra-high storage ratio folding array structure based on hexagonal folding units according to claim 1, characterized in that: The hinge includes two groups of folding joints and a sleeve. The two groups of folding joints are separated and arranged at the two ends of the sleeve along the axis of the sleeve, and are rotatably connected to the sleeve through bearings. Pins are arranged at both ends of the sleeve and connected to the end of the sleeve for axially limiting the folding joints. The two groups of folding joints are each connected and fixed to the plate body of the hexagonal folding unit.

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