Inner dome structure and dome structure unit

Abstract

To provide an inner dome structure which can be easily installed inside an outer dome structure.SOLUTION: An inner dome structure of the present invention is arranged inside an outer dome structure and comprises a plurality of panels each having a panel body and a joint part provided along an outer edge of the panel body, and two of the plurality of panels are joined by the respective joint parts of two panels arranged at positions next to each other in the inner dome structure and the plurality of panels are assembled.SELECTED DRAWING: Figure 2

Description

Technical Field

[0006] , , ,

[0001] The present invention relates to an inner dome structure disposed inside an outer dome structure, And, and a dome structure unit having an outer dome structure and an inner dome structure. To

Background Art

[0002] Dome structures that can be assembled using a plurality of panel members are used in various applications such as temporary housing and simple tents. As an example of such an assembled dome structure, the dome structure described in Patent Document 1 can be mentioned.

[0003] The dome structure described in Patent Document 1 is constructed by assembling panel members having a triangular or quadrilateral outer surface. Specifically, a plurality of panel members are arranged to form a polyhedral dome, and the panel members are fastened to each other by fasteners to construct a dome-shaped structure.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Inside the above-described assembled dome structure (hereinafter, outer dome structure), for various purposes, it is conceivable to install another dome-shaped structure (hereinafter, inner dome structure). However, if the inner dome structure is installed while being suspended inside the outer dome structure, the installation work is difficult and may take time. Therefore, there is a need for an inner dome structure that can be easily installed inside the outer dome structure.

[0006] ​This invention has been made in view of the above circumstances, and aims to solve the problems of the prior art described above, and specifically to provide an inner dome structure that can be easily installed inside an outer dome structure. Furthermore, the present invention also aims to provide a dome structure unit having the inner dome structure and the outer dome structure described above, and a panel constituting the inner dome structure described above. [Means for solving the problem]

[0007] To achieve the above objective, the inner dome structure of the present invention is an inner dome structure disposed inside an outer dome structure, comprising a plurality of panels, each having a panel body and a joint provided along the outer edge of the panel body, wherein two panels that are adjacent to each other in the inner dome structure are joined together by their respective joints, and the plurality of panels are combined. The inner dome structure of the present invention, configured as described above, can be easily assembled and easily installed inside the outer dome structure.

[0008] Furthermore, in the inner dome structure of the present invention, the joint portion may be composed of a protrusion that extends from the outer edge of the panel body outward from the panel body. In this case, the joint portion of one of the two panels is preferably joined to a joint portion provided along the outer edge of the panel body of the other panel, in the direction in which the two panels are aligned. Furthermore, when combining multiple panels, each panel body of the multiple panels may be bent so that the surface of the panel body forms a curved surface, and the outer edge of the bent panel body may be rectangular. In this case, it is preferable that a joint portion protrudes from each of at least two of the four sides included in the outer edge, and that a jointed portion is provided along each of at least two of the four sides. Furthermore, it is even more preferable that, in each of the multiple panels, a joint portion protrudes from each of the four sides, and a portion to be joined is provided along each of the four sides. Furthermore, in the above configuration, each of the multiple panels may be provided with a joint and a joined portion. In this case, it is more preferable that one diagonal in the quadrilateral formed by the outer edge bisects the surface of the panel body in its bent state, and that in each of the multiple panels, the position of the joint and the position of the joined portion are symmetrical with respect to the aforementioned diagonal.

[0009] Furthermore, in the inner dome structure of the present invention, a fold line is formed in the region of the outer edge where the joint portion protrudes, and the fold line may be provided on the outer surface of the panel that faces the inside of the inner dome structure.

[0010] Furthermore, in the inner dome structure of the present invention, each of the multiple panels may be provided with multiple joints and joined portions, and the bottom of the outer dome structure may be provided with at least one of the outer dome joints and outer dome joined portions. When an outer dome joint is provided at the bottom of the outer dome structure, it is preferable that the outer dome joint is joined to a joined portion provided on the lower panel, where a part of the outer edge of the panel body faces the bottom of the outer dome structure. Also, when an outer dome joined portion is provided at the bottom of the outer dome structure, it is preferable that a joint provided on the lower panel is joined to the outer dome joined portion. Furthermore, in the above configuration, among the parts to be joined on the lower panel, the part to which the outer dome joint is joined may have a hole into which the outer dome joint is inserted. In this case, the hole is preferably provided in the region of the outer edge of the panel body of the lower panel in which the joint protrudes.

[0011] Furthermore, in the inner dome structure of the present invention, when two panels are joined together, the joint portion of one panel and the joint portion of the other panel may be adjacent to each other. In addition, the joint portion of one panel may overlap the outer surface of the panel body of the other panel that faces the outside of the inner dome structure, and the joint portion of the other panel may overlap the outer surface of the panel body of the first panel. Furthermore, in the inner dome structure of the present invention, the joint portion of the other panel may have a hole into which the joint portion of the other panel is inserted. In this case, the hole is preferably provided in the region of the outer edge of the panel body of the other panel in which the joint portion of the other panel protrudes. Furthermore, in the inner dome structure of the present invention, notches may be formed in the panel body. In this case, when combining multiple panels, it is preferable that the panel body of each of the multiple panels be bent such that two parts located on opposite sides of the notch in the panel body overlap, and the surface of the panel body forms a curved surface.

[0012] Furthermore, the dome structure unit of the present invention is characterized by comprising an inner dome structure having any of the above-described configurations, and an outer dome structure to which the inner dome structure is placed and to which the inner dome structure is attached. Furthermore, the panel of the present invention is a panel that constitutes an inner dome structure of any of the above-described configurations, and is characterized by having the above-described panel body and the above-described joint, and being joined by the joint to another panel arranged at an adjacent position in the inner dome structure. [Effects of the Invention]

[0013] According to the present invention, an inner dome structure that can be easily installed inside an outer dome structure can be provided. Furthermore, a dome structure unit having the above-mentioned inner dome structure and outer dome structure can improve convenience compared to using the outer dome structure alone. In addition, a panel used for assembling the above-mentioned inner dome structure can be provided. [Brief explanation of the drawing]

[0014] [Figure 1] This is a perspective view of the assembled structure. [Figure 2] This figure shows the outer dome structure, the inner dome structure, and the dome structure unit. [Figure 3] This is a perspective view of the outer panel. [Figure 4] It is a view that enlarges a part of the bottom of the outer dome structure. [Figure 5] It is a perspective view of the inner panel in a bent state. [Figure 6] It is a view showing the inner panel in a sheet state before being bent. [Figure 7] It is a front view of the inner panel in a bent state. [Figure 8] It is a view showing the state of panel joining. [Figure 9] It is a view showing two inner panels joined to each other (part 1). [Figure 10] It is a view showing two inner panels joined to each other (part 2). [Figure 11] It is an enlarged view showing the location where four inner panels are combined. [Figure 12] It is a view showing the state of joining the inner dome structure to the bottom of the outer dome structure. [Figure 13] It is a view showing the back surface of the outer dome structure before the inner dome structure is assembled. [Figure 14] It is a view showing the back surface of the outer dome structure with the inner dome structure assembled.

Mode for Carrying Out the Invention

[0015] One embodiment of the present invention will be described in detail below with reference to the accompanying drawings. Note that the embodiments described below are merely examples given to facilitate understanding of the present invention and do not limit the present invention. That is, the present invention can be changed or improved from the embodiments described below without departing from its gist, and equivalents thereof are included in the present invention.

[0016] Also, in this specification, the meanings of "same", "identical", "equal", "equivalent", "equally divided", and "equidistant" may include the range of errors generally acceptable in the technical field to which the present invention belongs. Furthermore, in this specification, the meanings of “perpendicular,” “orthogonal,” and “parallel” include a range of errors that are generally acceptable in the art to which this invention belongs, and may include deviations of less than a few degrees (e.g., 2-3°) from strictly perpendicular, orthogonal, and parallel.

[0017] Furthermore, in this specification, "inside" refers to the side of the inner dome structure and the outer dome structure that faces the interior of the dome, and "outside" refers to the side located on the outside of each dome.

[0018] [Regarding prefabricated structures and dome structure units] In describing the inner dome structure of the present invention, the assembled structure 100 including the inner dome structure and the dome structure unit 110 will be described with reference to Figures 1 and 2.

[0019] The assembled structure 100 has the appearance shown in Figure 1 and is a structure capable of accommodating people, animals, or objects inside. It can be used for purposes appropriate to its size, such as temporary housing in disaster areas, simple tents, or pet shelters. The lower part of the assembled structure 100 (specifically, the body structure 120) is provided with an opening 122, as shown in Figure 1, through which it is possible to enter and exit the inside of the assembled structure 100.

[0020] As shown in Figure 1, the assembled structure 100 is composed of a dome structure unit 110 that forms the upper part of the structure and a cylindrical body structure 120 that supports the dome structure unit 110 from below. As shown in Figure 2, the dome structure unit 110 has an outer dome structure 80 and an inner dome structure 60 that is positioned inside the outer dome structure 80. Note that, for illustrative purposes, the outer dome structure 80 in Figure 2 is shown with some of the panels (hereinafter referred to as outer panels 82) that make up the outer dome structure removed.

[0021] The inner dome structure 60, the outer dome structure 80, and the fuselage structure 120 are each prefabricated structures composed of multiple panels. The panels that make up each structure are made of, for example, corrugated cardboard, i.e., corrugated cardboard sheets. The corrugated cardboard sheets have a laminated structure in which a corrugated paper core is sandwiched between two sheets of flat paper, and the quality of the paper can be anything, and various coatings may be applied. Furthermore, the fuselage structure 120 is not limited to being made of corrugated cardboard sheets, but may also be made by molding or processing metal or resin material into a cylindrical shape.

[0022] [Outer dome structure] The outer dome structure 80 will be explained with reference to Figures 2, 3, and 4, which have been shown previously. Figure 3 is a perspective view of the outer panel 82 as seen from the inside, and Figure 4 is an enlarged view of a portion of the bottom 81 of the outer dome structure 80 shown in Figure 2.

[0023] The outer dome structure 80 is constructed by preparing multiple outer panels 82 (specifically 12) as shown in Figure 3, arranging the multiple outer panels 82 in a dome shape, and joining the panels together.

[0024] Each outer panel 82 consists of multiple panel pieces 84. In the configuration shown in Figure 3, four panel pieces 84 are used, and two adjacent panel pieces are joined together. When joining the panel pieces, the connecting protrusions 85 provided on the outer edge of each panel piece 84 are bent approximately perpendicular to the panel body other than the connecting protrusions 85. Then, the two adjacent panel pieces 84 are brought into contact with each other's connecting protrusions 85 and connected using fasteners or the like, thereby joining the two panel pieces together.

[0025] In the outer panel 82 constructed in the manner described above, connecting protrusions 85 protrude inward from the inner surface of the outer panel 82, as shown in Figure 3. When joining outer panels together, the connecting protrusions 85 erected on the outer edges of each outer panel 82 are connected to each other. Therefore, when multiple outer panels 82 are combined to form the outer dome structure 80, the connecting protrusions 85 are arranged to protrude along the inner surface of the outer dome structure 80, as shown in Figure 2.

[0026] Furthermore, as shown in Figure 2, the bottom 81 of the outer dome structure 80 is connected in an annular shape, and as shown in Figure 4, the inner edge of the bottom 81 is provided with an outer connecting piece 86 and an outer connecting projection 87 that protrude inward in the radial direction of the bottom 81. The outer connecting piece 86 and the outer connecting projection 87 function as an outer dome joint, which will be described later.

[0027] Furthermore, a slit-shaped outer joining hole 88 is provided along the inner edge of the bottom portion 81, approximately in the center of the region where the outer joining piece 86 protrudes. The outer joining hole 88 functions as the outer dome to be joined, which will be described later.

[0028] [Inner dome structure] The inner dome structure 60 will be explained with reference to Figures 2 and 5, which have been previously shown. Figure 5 is a perspective view of the inner panel 10 in its bent state, as seen from the outside.

[0029] The inner dome structure 60 is a smaller dome body than the outer dome structure 80, and is assembled to the outer dome structure 80 while positioned inside the outer dome structure 80. As a result, the connecting protrusions 85 that protrude from the inner surface of the outer dome structure 80 are hidden by the inner dome structure 60, thereby improving the aesthetic appearance of the inner surface of the assembled structure 100, particularly the ceiling portion.

[0030] Furthermore, the inner surface of the inner dome structure 60 does not have a portion corresponding to the connecting protrusion 85 of the outer dome structure 80. As a result, the inner surface of the inner dome structure 60 is a smooth curved surface without irregularities, which can be used for purposes such as projecting images onto this curved surface. In addition, even if external light leaks into the dome through gaps (joints) formed between the outer panels of the outer dome structure 80, it can be blocked by the inner dome structure 60.

[0031] The inner dome structure 60 is constructed by combining multiple (specifically 12) panels, and more precisely, by arranging multiple panels in a dome shape and joining the panels together. The panels that make up the inner dome structure 60 (hereinafter referred to as inner panels 10) are used in a three-dimensionally bent state as shown in Figure 5. The bent state of the inner panel 10 means that the outer surface of the panel body 12 of the inner panel 10 is bent to form a curved surface, and more specifically, it is bent so that one point in the panel body 12 (the point marked with the symbol P in Figure 5) protrudes the furthest outward. Here, point P is the intersection of the diagonals of the quadrilateral formed by the outer edge of the panel body 12 when the panel body 12 is in the bent state.

[0032] Furthermore, each of the multiple inner panels 10 that make up the inner dome structure 60 is identical in shape. In other words, the inner dome structure 60 is composed of only one type of inner panel 10. Because the inner dome structure 60 is composed of only one type of panel, the assembly of the inner dome structure 60 becomes easier.

[0033] Furthermore, since there is only one type of inner panel 10, the number of molds and other equipment required to manufacture the inner panel 10 is reduced, making panel production easier and lowering the cost of panel production. In addition, when assembling the inner dome structure 60 at the location where the assembled structure 100 is used, the inner panels 10 must be transported to that location. Since there is only one type of inner panel 10, multiple inner panels 10 can be stacked and transported. Also, multiple inner panels 10 can be stacked and stored at the location of use. As a result, the transportation and storage of the inner panels 10 become easier.

[0034] [Inner panel configuration] The configuration of the inner panel 10 will be explained with reference to Figures 6 and 7. Figure 6 shows the inner panel 10 in its sheet state before bending, and is a view of the inner panel 10 from the inside (back side). Figure 7 is a front view of the inner panel 10 in its bent state, and more specifically, is a view of the outer surface of the inner panel 10 when point P mentioned above is viewed from the front.

[0035] As mentioned above, each of the multiple inner panels 10 constituting the inner dome structure 60 has the same shape and the configuration is similar among the inner panels 10; therefore, the following description will focus on the configuration of a single inner panel 10.

[0036] Furthermore, for the sake of clarity, in the following explanation, when viewing the bent inner panel 10 (the inner panel 10 shown in Figure 7) from the outside, the side moving clockwise around point P will be referred to as the "downstream side," and the opposite side will be referred to as the "upstream side."

[0037] The inner panel 10 is made of a single sheet and comprises a panel body 12 and a joint 40 provided along the outer edge of the panel body 12, as shown in Figures 6 and 7.

[0038] As shown in Figure 6, the panel body 12 is divided into multiple unit parts, specifically six unit parts 21 to 26, by multiple fold lines L1 formed on the panel body 12. Each of the six unit parts 21 to 26 is triangular in shape, and five of these unit parts 21 to 25 are arranged around point P (i.e., one of the vertices coincides with point P) as shown in Figure 7.

[0039] The first unit portion 21 is a roughly equilateral triangle. On either side of the first unit portion 21 are the second unit portion 22 and the third unit portion 23, which are roughly isosceles triangles. The second unit portion 22 and the third unit portion 23 are congruent, with the second unit portion 22 sharing one side with the first unit portion 21, and the third unit portion 23 sharing one side with the first unit portion 21 on the opposite side from the second unit portion 22. The fourth unit portion 24 is a roughly right-angled portion and shares one side with the second unit portion 22 at a different position from the first unit portion 21. The fifth unit portion 25 is congruent to the fourth unit portion 24 and shares one side with the third unit portion 23 at a different position from the first unit portion 21. The sixth unit portion 26 is a roughly isosceles triangular portion, and its base coincides with one side of the first unit portion 21 (a side that is in a different position from the second unit portion 22 and the third unit portion 23).

[0040] Furthermore, in the panel body 12 before it is bent, as shown in Figure 6, the fourth unit portion 24 and the fifth unit portion 25 are separated from each other, and a roughly triangular overlap portion 27 is provided between them. The overlap portion 27 is overlapped with the fourth unit portion 24 when the panel body 12 is bent, and is continuous with the fifth unit portion 25. A fold line L2 is provided at the boundary between the fifth unit portion 25 and the overlap portion 27.

[0041] Furthermore, as shown in Figure 6, a notch 28 is provided between the fourth unit portion 24 and the overlap portion 27 in the panel body 12 before it is bent. The notch 28 is a cutting line that extends in a straight line along one side of the fourth unit portion 24 (the side located on the fifth unit portion 25 side), except for the portion where the insertion piece 29 described later is provided. Here, the fourth unit portion 24 and the overlap portion 27 correspond to two parts located on opposite sides of the notch 28 in the panel body 12, as shown in Figure 6.

[0042] Furthermore, as shown in Figure 6, a roughly trapezoidal insert piece 29 protrudes from the side of the fourth unit portion 24 where the notch 28 is located, toward the fifth unit portion 25. In other words, the aforementioned notch 28 is formed while curving along the outer edge of the insert piece 29 at an intermediate position. On the other hand, a slit-shaped insert hole 30 is provided at the boundary position between the fifth unit portion 25 and the overlap portion 27, specifically at the location corresponding to the insert piece 29 on the bending line L2. When the panel body 12 is bent, the insert piece 29 is inserted into the insert hole 30.

[0043] Furthermore, the trapezoidal insertion piece 29 is constricted at its base, and the width of the part adjacent to the base at the tip of the insertion piece 29 is longer than the width of the insertion piece 29. In addition, the longitudinal width of the insertion hole 30 is set to be shorter than the longest width of the insertion piece 29. This shape of the insertion piece 29 functions as a retaining structure to prevent it from coming loose from the insertion hole 30.

[0044] The panel body 12, configured as described above, is bent along multiple fold lines L1 when assembling the inner dome structure 60 (i.e., combining multiple inner panels 10). At this time, because the above-mentioned notches 28 are provided, the panel body 12 can be bent so that a part of the fourth unit portion 24 and the overlap portion 27 overlap, as shown in Figure 5. More specifically, the panel body 12 is bent so that one side of the fourth unit portion 24 (the side on which the notches 28 are located) and one side of the fifth unit portion 25 (the side forming the fold line L2) coincide. As a result, the panel body 12 takes on a three-dimensional shape, and more specifically, the surface of the panel body 12 becomes a curved surface, more specifically, a part of a sphere.

[0045] Furthermore, by inserting the insertion piece 29 into the insertion hole 30, the state in which a part of the fourth unit portion 24 and the overlapping portion 27 overlap can be stably maintained. Note that the means for maintaining the state in which the fourth unit portion 24 and the overlapping portion 27 overlap are not limited to the above configuration; for example, the four parts may be fixed together with tape or the like while they are overlapping.

[0046] Furthermore, the outer edge of the bent panel body 12 forms a roughly quadrilateral shape when viewed from the front, as shown in Figure 7. One of the diagonals CL in this roughly quadrilateral is the longer diagonal, and it bisects the surface of the bent panel body 12. In other words, the above roughly quadrilateral is symmetrical with respect to the diagonal CL.

[0047] The joint portion 40 is composed of a protrusion that extends outward from the outer edge of the panel body 12 and is used when joining panels. In other words, each inner panel 10 is joined to another inner panel 10 located adjacent to it in the inner dome structure 60 by the joint portion 40 when joining panels. When referring to joining panels, it means joining two inner panels located adjacent to each other in the inner dome structure 60.

[0048] Furthermore, "joining" means connecting parts together, and this category may include engagement including interlocking and catching, fitting including interlocking and fitting, insertion and insertion, and bonding. Similarly, joining using fasteners such as staplers and tape, or binding devices such as cable ties, is also acceptable.

[0049] A preferred configuration of the joint 40 is shown in Figures 6 and 7, in which the joint 40 comprises at least two types of protrusions, specifically flap-shaped joint pieces 41-45 and a substantially trapezoidal joint projection 46. However, it is not limited to this, and the joint 40 may also be configured to have only the joint pieces 41-45 and no joint projection 46.

[0050] The joining pieces 41-45 are rectangular portions that extend along the outer edge of the panel body 12, and more specifically, they are parallelograms, trapezoids, and similar rectangular shapes. The shape of the joining pieces is not particularly limited and may be rectangular or square. When joining the panels, the joining pieces 41-45 engage with the joining piece defect portion 51 while along the surface of the panel body 12, thereby joining them to the joining piece defect portion 51 (see Figure 8). The joining piece defect portion 51 corresponds to the portion to be joined 50 and is a part of the panel body 12, adjacent to the region of the outer edge of the panel body 12 where the joining pieces 41-45 do not protrude (hereinafter referred to as the defect region Ra).

[0051] As shown in Figure 7, the outer edge of the panel body 12 has a mixture of a missing region Ra and a region where the joining pieces 41-45 protrude (hereinafter referred to as the protruding region Rb). Therefore, in the inner panel 10, the portion adjacent to the protruding region Rb (i.e., the joining pieces 41-45) becomes a convex portion, and the portion adjacent to the missing region Ra becomes a concave portion.

[0052] Furthermore, as shown in Figure 6, a fold line L3 is formed along the protruding region Rb of the outer edge of the panel body 12. The fold line L3 is provided on the outer or inner surface of the inner panel 10, but it is preferable that it be provided on the outer surface. In Figure 6, the fold line L3 formed on the outer surface of the inner panel 10 is shown as a dashed line. The fold line L3 is composed of rows of recesses (embossing) that are provided continuously or intermittently at the location where the fold line L3 is formed, for example, like perforations.

[0053] The joining projection 46 protrudes from the missing region Ra on the outer edge of the panel body 12 and extends along the outer edge of the panel body 12 for a long distance, and its protrusion amount and extension length are significantly smaller than those of the joining pieces 41 to 45. When joining the panels, the joining projection 46 is inserted into the joining hole 52 of the adjacent inner panel 10 while remaining along the surface of the panel body 12, thereby joining it to the joining hole 52 (see Figure 8). The joining hole 52 corresponds to the part to be joined 50, consists of a slit-shaped hole, and is provided in the protruding region Rb on the outer edge of the panel body 12, as shown in Figure 6. As mentioned above, the joining hole 52 is part of the joined portion 50, as the joining projection 46 is inserted into it and joined to the joining projection 46. In other words, the joined portion 50 includes the joining hole 52 as the part that is joined to the joining projection 46.

[0054] Furthermore, the trapezoidal joint projection 46 is constricted at its base, and the width of the portion adjacent to the base at the tip of the joint projection 46 is longer than the width of the joint hole 52. Also, the longitudinal width of the joint hole 52 is set to be shorter than the longest width of the joint projection 46. This shape of the joint projection 46 functions as a retaining structure to prevent it from coming loose from the joint hole 52.

[0055] In the bent panel body 12, as shown in Figure 7, one or more joining pieces 41-45 and one or more joining protrusions 46 are provided along each side of the quadrilateral formed by the outer edge of the panel body 12 (i.e., each of the four sides included in the outer edge). In addition, one or more joining piece missing parts 51 and one or more joining holes 52 are provided along each of the four sides. Thus, the inner panel 10 is provided with multiple joining parts 40 and joined parts 50. In a particularly preferred embodiment (the embodiment shown in Figures 6 and 7), in each of the inner panels 10, the positions of the joining parts 40 and the joined parts 50 are symmetrical with respect to the diagonal line CL.

[0056] To explain in more detail, in the outer edge described above, the side constituting one side of the fourth unit portion 24 (hereinafter referred to as the first side) has an upstream half region called the deficient region Ra and a downstream half region called the protruding region Rb. As shown in Figure 7, a roughly parallelogram-shaped joining piece 41 protrudes from the protruding region Rb of the first side. The upstream end of the joining piece 41 is inclined toward the upstream side as it moves away from the first side. Also, as shown in Figure 7, a joining projection 46 protrudes from approximately the center of the deficient region Ra of the first side.

[0057] On the other hand, the portion of the panel body 12 adjacent to the missing region Ra on the first side becomes the missing joint portion 51, which is the jointed portion 50. Also, as shown in Figure 7, a joint hole 52 is formed at the boundary position between the joint piece 41 and the panel body 12 (i.e., on the protruding region Rb), which is the jointed portion 50.

[0058] Of the outer edges described above, the side that is symmetrical to the first side with respect to the diagonal CL and constitutes one side of the fifth unit portion 25 (hereinafter referred to as the second side) has an upstream half that is a deficient region Ra and a downstream half that is a protruding region Rb. As shown in Figure 7, a joint piece 42 with a shape similar to a parallelogram protrudes from the protruding region Rb of the second side. The upstream end of the joint piece 41 is inclined toward the upstream side as it moves away from the second side. Also, as shown in Figure 7, a joint projection 46 protrudes from approximately the center of the deficient region Ra of the second side.

[0059] On the other hand, the portion of the panel body 12 adjacent to the missing region Ra on the second side becomes the missing joint portion 51, which is the jointed portion 50. Also, as shown in Figure 7, a joint hole 52 is formed at the boundary position between the joint piece 42 and the panel body 12 (i.e., on the protruding region Rb), which is the jointed portion 50.

[0060] Of the outer edges described above, in the third edge (hereinafter referred to as the "third edge") which constitutes one side of the second unit portion 22 and one side of the sixth unit portion 26, the central region is the missing region Ra, and the regions located on both sides of it are the protruding regions Rb. As shown in Figure 7, a substantially parallelogram-shaped connecting piece 43 protrudes from the downstream protruding region Rb of the third edge, and a trapezoidal connecting piece 44 protrudes from the upstream protruding region. The upstream end of the connecting piece 43 is inclined toward the upstream side as it moves away from the third edge. Also, as shown in Figure 7, a connecting projection 46 protrudes from approximately the center of the missing region Ra of the third edge.

[0061] On the other hand, the portion of the panel body 12 adjacent to the missing region Ra on the third side becomes the missing joint portion 51, which is the jointed portion 50. Also, as shown in Figure 7, joint holes 52, which are jointed portions 50, are formed at the boundary position between the joint piece 43 and the panel body 12 (i.e., on the downstream protruding region Rb) and at the boundary position between the joint piece 44 and the panel body 12 (i.e., on the upstream protruding region Rb).

[0062] Of the outer edges described above, the fourth edge (hereinafter referred to as the fourth edge), which is symmetrical to the third edge with respect to the diagonal CL, and forms one side of the third unit portion 23 and one side of the sixth unit portion 26, has a central region that is a protruding region Rb, and the regions located on either side of it are deficient regions Ra. As shown in Figure 7, a connecting piece 45, which has a shape similar to a parallelogram, protrudes from the protruding region Rb on the fourth edge. The upstream end of the connecting piece 45 slopes toward the upstream side as it moves away from the fourth edge. Also, as shown in Figure 7, connecting protrusions 46 protrude from approximately the center of the upstream and downstream deficient regions Ra on the fourth edge.

[0063] On the other hand, the portion of the panel body 12 adjacent to the upstream lack region Ra on the fourth side, and the portion adjacent to the downstream lack region Ra, each become a joining piece missing portion 51 which is the joining portion 50. Also, as shown in Figure 7, a joining hole 52 is formed at the boundary position between the joining piece 45 and the panel body 12 (i.e., on the protruding region Rb) which is the joining portion 50.

[0064] [Assembly method for the inner dome structure] Next, the assembly method for the inner dome structure 60 will be explained with reference to Figures 8-11.

[0065] The inner dome structure 60 is composed of multiple inner panels 10, for example, 12 inner panels 10. In this case, the dish-shaped top portion of the inner dome structure 60 is composed of 4 inner panels 10, and the cylindrical side portion is composed of 8 inner panels 10. In this case, the inner panels 10 that make up the side portion correspond to the lower panels. The lower panels are the inner panels 10 whose outer edge part of the panel body 12 faces the bottom 81 of the outer dome structure 80 when the inner dome structure 60 is placed inside the outer dome structure 80.

[0066] When assembling the inner dome structure 60, each panel body 12 of the multiple inner panels 10 is bent so that its surface becomes curved, and the inner panels 10 in this bent state are combined. In the following, the inner panel 10 in the bent state of the main panel 12 will simply be referred to as "inner panel 10".

[0067] To combine the 12 inner panels 10, two inner panels (hereinafter referred to as two adjacent panels) that are positioned adjacent to each other in the inner dome structure 60 are joined together. Then, as shown in Figures 8 to 10, the two adjacent panels are joined by the joints 40 of each adjacent panel.

[0068] To explain in more detail, the joint portion 40 of one of the two adjacent panels is joined to the joined portion 50 of the other adjacent panel along the direction in which the two adjacent panels are aligned (i.e., the adjacent direction). Similarly, the joint portion 40 of the other adjacent panel is joined to the joined portion 50 of the first adjacent panel along the direction in which the two adjacent panels are aligned (the adjacent direction). In this way, the two adjacent panels are joined together. Here, when joining the panels, the joint portion 40 is not bent perpendicular to the panel body like the connecting protrusion 85 provided on the outer panel 82 that constitutes the outer dome structure 80, but is used in a state that is along the surface of the panel body 12.

[0069] Furthermore, of the two adjacent panels, one adjacent panel can be joined to the other adjacent panel at each of the four sides of the rectangle formed by the outer edge of the panel body 12.

[0070] To explain in more detail, for example, with the first side of the panel body 12 of one adjacent panel facing the second side of the panel body 12 of the other adjacent panel, the adjacent panels are brought closer together in the adjacent direction. At this time, as shown in Figure 8, the joining piece 41 protruding from the first side of one adjacent panel approaches the missing region Ra of the second side of the other adjacent panel, and eventually crosses the missing region Ra and overlaps with the missing joining piece portion 51 of the panel body 12 of the other adjacent panel. Similarly, the joining piece 42 protruding from the second side of the other adjacent panel approaches the missing region Ra of the first side of one adjacent panel, and eventually crosses the missing region Ra and overlaps with the missing joining piece portion 51 of the panel body 12 of the one adjacent panel.

[0071] Following the procedure described above, the two adjacent panels are joined by their respective joining pieces 41 and 42, as shown in Figure 9, such that the first edge of one adjacent panel coincides with the second edge of the other adjacent panel. In the joined state, as shown in Figure 9, the joining piece 41 of one adjacent panel and the joining piece 42 of the other adjacent panel are adjacent to each other. Also, in the above state, the joining piece 41 of one adjacent panel overlaps the outer surface of the joining piece missing portion 51 on the panel body 12 of the other adjacent panel. Similarly, the joining piece 42 of the other adjacent panel overlaps the outer surface of the joining piece missing portion 51 on the panel body 12 of the one adjacent panel.

[0072] As described above, the connecting pieces 41 and 42 of the two adjacent panels approach the missing connecting piece portion 51 and are ultimately superimposed on the missing connecting piece portion 51, joining them together. In other words, the connecting pieces 41 and 42 of each adjacent panel fit into the recessed area in the other adjacent panel where the connecting piece is missing, and are superimposed on the outer surface of the missing connecting piece portion 51. For convenience, this state will be referred to below as the "state in which the connecting pieces interlock."

[0073] Furthermore, when the joining pieces are interlocked, that is, when adjacent panels are joined together, the joining protrusions 46 provided on each adjacent panel are inserted into the joining holes 52. Specifically, as shown in Figures 8 and 9, the joining protrusion 46 protruding from the missing region Ra on the first side of one adjacent panel is inserted into the joining hole 52 formed at the boundary between the panel body 12 and the joining piece 42 of the other adjacent panel. Similarly, the joining protrusion 46 protruding from the missing region Ra on the second side of the other adjacent panel is inserted into the joining hole 52 formed at the boundary between the panel body 12 and the joining piece 41 of the one adjacent panel.

[0074] By following the above procedure, adjacent panels can be joined together so that the first edge of the panel body 12 in one adjacent panel faces the second edge of the panel body 12 in the other adjacent panel, as shown in Figure 9. Alternatively, by following the same procedure, adjacent panels can be joined together so that the second edge of the panel body 12 in one adjacent panel coincides with the first edge of the panel body 12 in the other adjacent panel.

[0075] Furthermore, for example, when the third side of the panel body 12 of one adjacent panel faces the fourth side of the panel body 12 of the other adjacent panel, the adjacent panels are brought closer together in the adjacent direction. At this time, the joining pieces 43 and 44 protruding from the third side of one adjacent panel approach the missing region Ra of the fourth side of the other adjacent panel, and eventually cross the missing region Ra and overlap the missing joining piece portion 51 of the panel body 12 of the other adjacent panel. Similarly, the joining piece 45 protruding from the fourth side of the other adjacent panel approaches the missing region Ra of the third side of one adjacent panel, and eventually crosses the missing region Ra and overlaps the missing joining piece portion 51 of the panel body 12 of the one adjacent panel. In other words, the joining pieces interlock between the two adjacent panels.

[0076] Following the procedure described above, the two adjacent panels are joined by their respective joining pieces 43-45, as shown in Figure 10, such that the third side of one adjacent panel coincides with the fourth side of the other adjacent panel. When the adjacent panels are joined, joining pieces 43, 44 and joining piece 45 are adjacent to each other. Specifically, as shown in Figure 10, joining piece 45 of the other adjacent panel fits between the two joining pieces 43, 44 of one adjacent panel. Also, in the above state, joining pieces 43, 44 of one adjacent panel overlap the outer surface of the joining piece missing portion 51 in the panel body 12 of the other adjacent panel. Similarly, joining piece 45 of the other adjacent panel overlaps the outer surface of the joining piece missing portion 51 in the panel body 12 of the one adjacent panel.

[0077] Furthermore, when adjacent panels are joined together, the joining protrusions 46 provided on each adjacent panel are inserted into the joining holes 52. Specifically, the joining protrusion 46 protruding from the missing region Ra on the third side of one adjacent panel is inserted into the joining hole 52 formed at the boundary between the panel body 12 and the joining piece 45 of the other adjacent panel. Also, the joining protrusion 46 protruding from the missing region Ra on the fourth side of the other adjacent panel is inserted into the joining hole 52 formed at the boundary between the panel body 12 and the joining pieces 43 and 44 of the one adjacent panel.

[0078] By following the above procedure, adjacent panels can be joined together so that the third side of the panel body 12 on one adjacent panel faces the fourth side of the panel body 12 on the other adjacent panel, as shown in Figure 10. Alternatively, by following the same procedure, adjacent panels can be joined together so that the fourth side of the panel body 12 on one adjacent panel coincides with the third side of the panel body 12 on the other adjacent panel.

[0079] As described above, the inner panel 10 can be properly joined to the other inner panel 10 (i.e., another inner panel 10 located adjacent to it) by switching its orientation. This is because, in the inner panel 10, the joining portion 40 and the joined portion 50 are located symmetrically to each other with respect to the diagonal line CL. Switching the orientation means switching the side of the quadrilateral formed by the outer edge of the panel body 12 of the inner panel 10 that faces the joining partner. In other words, it means rotating it by 90, 180, or 270 degrees around point P.

[0080] As a result of the above effects, even though the panel shapes are identical (i.e., one type of shape), multiple inner panels 10 can be combined to form a dome. In other words, the inner dome structure 60 can be constructed using only one type of inner panel 10.

[0081] Furthermore, since the inner panel 10 is equipped with a joint 40, adjacent panels can be joined together using a dry joining method that does not require adhesives or fasteners such as cable ties. This makes it easy to combine multiple inner panels 10, and simplifies the assembly of the inner dome structure 60.

[0082] Furthermore, the interlocking of the connecting pieces ensures that the joint between adjacent panels is maintained in good condition. In addition, the insertion of the connecting projection 46 into the connecting hole 52 further strengthens the joint between adjacent panels. This makes the assembly of the inner dome structure 60 much easier.

[0083] More specifically, the joint 40, which includes the joining pieces 41-45 and the joining projection 46, allows the inner dome structure 60 to be assembled while maintaining the state in which adjacent panels are joined together. Therefore, when assembling the inner dome structure 60, it is not necessary to first assemble the outer dome structure 80 and then suspend the inner panels 10 inside the dome and join the inner panels together. In other words, even if the outer dome structure 80 has not yet been assembled, the inner dome structure 60 can be assembled independently. At that time, since the state in which adjacent panels are joined together is well maintained, the assembly of the inner dome structure 60 can proceed without the need for temporary fastening or reinforcement with tape or the like.

[0084] Furthermore, when assembling the inner dome structure 60, the top section and the side sections of the inner dome structure 60 can be assembled separately, and finally, the top section can be attached to the side sections. This procedure improves work efficiency. In other words, since it is not necessary to assemble the top section above the side sections after they have been assembled, the top section can be assembled at ground or floor level without the need for ladders or similar equipment.

[0085] Furthermore, the assembly method of the inner dome structure 60 differs from that of the outer dome structure 80. Specifically, adjacent panels are joined by interlocking connecting pieces and inserting connecting protrusions 46 into connecting holes 52. In other words, the inner panel 10 does not have a portion that is bent perpendicular to the panel body 12 when the panels are joined, such as a connecting protrusion 85. Because such a portion is absent, the thickness of the inner panel 10 can be reduced (thinned). Moreover, since no portion corresponding to the connecting protrusion 85 appears on the inner surface of the inner dome structure 60, the space inside the dome can be made larger, and as a result, the space inside the dome can be used more effectively.

[0086] The joining pieces 41, 42, 43, and 45 are parallelogram-shaped or similar in shape, and their upstream ends are inclined toward the upstream side as they move away from the panel body 12. With this configuration, it is possible to suppress the joining pieces 41, 42, 43, and 45, which are joined to the joining piece defect 51, from detaching from the joining piece defect 51 (that is, from moving in a direction that releases the joining state with the joining piece defect 51).

[0087] Furthermore, on the outer surface of the inner panel 10, a fold line L3 is formed along the outer edge of the panel body 12 at the boundary between the joining pieces 41-45 and the panel body 12. In this case, after interlocking the joining pieces, the joining pieces 41-45 become easier to bend upward starting from the fold line L3, thus facilitating the joining of the joining pieces 41-45 and the missing portion 51 of the joining piece. Furthermore, if the fold line L3 is formed on the inner surface of the panel body 12, each connecting piece can be bent starting from the fold line L3 so as to follow the surface of the panel body 12 (more specifically, the outer surface of the connecting piece missing portion 51). As a result, the surfaces of each part of the inner dome structure 60 at the time of assembly can be made closer to a curved surface (spherical surface).

[0088] Furthermore, the joining holes 52 are formed at the boundary between the joining pieces 41-45 and the panel body 12, i.e., on the bending line L3. Therefore, when inserting the joining projection 46 into the joining hole 52, the joining pieces 41-45 can be bent outward, thereby allowing the joining projection 46 to be easily inserted into the joining hole 52.

[0089] Furthermore, because adjacent panels are joined by the interlocking of the joining pieces and the insertion of the joining projections 46 into the joining holes 52, the assembled inner dome structure 60 has minimal gaps between adjacent panels, and the formation of such gaps is suppressed. As a result, the inner dome structure 60 can effectively block external light that leaks into the dome through the joints in the outer dome structure 80, i.e., the gaps between the panels.

[0090] Furthermore, when the joining pieces are interlocked, as mentioned above, each joining piece overlaps the outer surface of the missing joining piece portion 51, thus effectively resisting the force acting on the outer surface of the adjacent panel.

[0091] To explain it simply, when the inner dome structure 60 is assembled inside the outer dome structure 80, the weight of the outer dome structure 80 acts as an external force on the inner dome structure 60. This external force acts inward on the inner panels 10 that make up the inner dome structure 60. Now, if the connecting pieces interlock so that each connecting piece slides under (inward) the missing part 51 of the connecting piece, then when the aforementioned inward force acts, each connecting piece sinks inward, and as a result, the interlocking of the connecting pieces becomes easily disengaged.

[0092] In contrast, when the joining pieces interlock so that each joining piece overlaps the outer surface of the joint piece defect 51, even if an inward force is applied, the sinking of each joining piece is prevented by the joint piece defect 51, thus maintaining the interlocking state between the joining pieces appropriately. This improves the joint strength of adjacent panels.

[0093] Furthermore, when the connecting pieces are interlocked so that each connecting piece overlaps the outer surface of the missing connecting piece portion 51, a force (outward force) may be applied to the inner panel 10, for example, by airflow from a fan installed inside the inner dome structure 60. In this case, each connecting piece will lift outward, and as a result, the interlocking of the connecting pieces will be easily released. However, the lifting of the connecting pieces is restricted by the inner surface of the outer dome structure 80. As a result, by positioning the inner dome structure 60 inside the outer dome structure 80, the interlocking state of the connecting pieces is properly maintained even when an outward force is applied to the inner panel 10. As a result, the inner dome structure 60 can further improve the joint strength of adjacent panels.

[0094] Furthermore, within the inner dome structure 60, there are points (hereinafter referred to as "assembly points Q") where three or four inner panels 10 are joined together, such as at the top of the dome. The three or four inner panels 10 arranged around the assembly point Q are positioned at equal intervals with respect to the assembly point Q. Specifically, at the assembly point Q where four inner panels 10 meet, as shown in Figure 11, each inner panel 10 is positioned at 90-degree intervals around the assembly point, rotating its orientation by 90 degrees each time. Also, at the assembly point Q where three inner panels 10 meet, each inner panel 10 is positioned at 120-degree intervals around the assembly point Q, rotating its orientation by 120 degrees each time.

[0095] Furthermore, around the assembly point Q, as shown in Figure 11, the connecting pieces (connecting pieces 44 in the location shown in Figure 11) provided by each inner panel 10 arranged around the assembly point Q are arranged at equal intervals and are joined to the missing connecting piece portion 51 at their respective positions. With this configuration, the connecting pieces are uniformly arranged near each assembly point in the inner dome structure 60, so that the strength (joint strength) can be made uniform around the assembly point Q. As a result, the bias in the strength distribution around the assembly point Q is suppressed.

[0096] [Method for attaching the inner dome structure to the outer dome structure] Next, the method for attaching the assembled inner dome structure 60 to the outer dome structure 80 will be explained with reference to Figures 12-14.

[0097] The inner dome structure 60 and the outer dome structure 80 are assembled individually. Then, the inner dome structure 60 is placed inside the outer dome structure 80, and the inner dome structure 60 is attached to the bottom 81 of the outer dome structure 80. At this time, the outer dome joint is joined to the part to be joined 50 located on the bottom 81 side of the inner panel 10 (i.e., the lower panel) that constitutes the side body portion of the inner dome structure 60. The outer dome joint is provided on the bottom 81 and is composed of a protrusion that extends from the inner edge of the annular bottom 81.

[0098] Specifically, the bottom portion 81 is provided with an outer connecting piece 86 and an outer connecting projection 87, which serve as outer dome joints. As shown in Figure 12, the outer connecting piece 86 and the outer connecting projection 87 are bent perpendicularly to the main body portion of the bottom portion 81, excluding the outer connecting piece 86 and the outer connecting projection 87. When assembling the inner dome structure 60 to the bottom portion 81, each of the outer connecting piece 86 and the outer connecting projection 87 is joined to a jointed portion 50 provided at the lower end of the lower panel.

[0099] More specifically, the outer joining piece 86 is superimposed on the joining piece defect 51 located at the lower end of the panel body 12 of the lower panel and joined to the joining piece defect 51. The outer joining projection 87 is inserted into a joining hole 52 provided in the protruding region Rb of the outer edge of the panel body 12 of the lower panel, specifically the side located at the lower end. Here, the joining hole 52 into which the outer joining projection 87 is inserted corresponds to the hole into which the outer dome joining portion is inserted.

[0100] The outer connecting projection 87 is trapezoidal, constricted at its base, and the width of the portion adjacent to the base at the tip of the outer connecting projection 87 is longer than the width of the connecting hole 52. Furthermore, the longitudinal width dimension of the connecting hole 52 is set to be shorter than the longest dimension in the lateral direction of the outer connecting projection 87. This shape of the outer connecting projection 87 functions as a retaining structure to prevent it from coming loose from the connecting hole 52.

[0101] Furthermore, when assembling the inner dome structure 60 to the bottom 81, the joint 40 provided at the lower end of the lower panel is joined to the outer dome joining portion provided on the bottom 81.

[0102] More specifically, the connecting pieces 41-45 and connecting projection 46 that protrude from the lower edge of the outer edge of the panel body 12 of the lower panel are bent so that their protrusion direction is horizontal, as shown in Figure 12, when the bending line L3 is provided on the outer surface of the panel body 12. The horizontally bent connecting pieces 41-45 are superimposed on the portion of the bottom 81 body where the outer connecting piece 86 does not protrude from the inner edge (i.e., the portion lacking the outer connecting piece 86) and joined to that portion. The horizontally bent connecting projection 46 is inserted into the outer connecting hole 88.

[0103] Furthermore, the width of the joint projection 46 at its tip, adjacent to the base, is longer than the width of the outer joint hole 88. Also, the longitudinal width dimension of the outer joint hole 88 is set to be shorter than the longest dimension of the joint projection 46 in the lateral direction. This shape of the joint projection 46 functions as a retaining structure to prevent it from coming loose from the outer joint hole 88.

[0104] By joining the lower panel to the bottom 81 using the procedure described above, the inner dome structure 60 can be easily and securely assembled to the outer dome structure 80 without using fasteners such as tape or cable ties. Furthermore, the inner dome structure 60 can be assembled to the outer dome structure 80 while minimizing the gap between the bottom 81 and the lower panel.

[0105] Then, by assembling the inner dome structure 60 to the outer dome structure 80, the dome structure unit 110 is completed. In the dome structure unit 110, the inner surface of the outer dome structure 80 and the connecting protrusions 85 protruding from the inner surface, as shown in Figure 13, are covered by the inner dome structure 60, as shown in Figure 14. Furthermore, the inner surface of the inner dome structure 60 does not have any protruding parts like the connecting protrusions 85, resulting in a smooth, curved surface without any irregularities. This allows the inner surface of the inner dome structure 60 to be used as a projection surface or a screen for a planetarium or the like.

[0106] The bottom portion 81 described above is provided with an outer dome joint portion consisting of an outer joining piece 86 and an outer joining projection 87, and an outer dome-connected portion consisting of a portion of the bottom body where the outer joining piece 86 is missing and an outer joining hole 88. However, it is not limited to this configuration, and the bottom portion 81 may be provided with only one of the outer dome joint portion or the outer dome-connected portion.

[0107] [Other embodiments] Although specific examples of the inner dome structure, dome structure unit, and panel of the present invention have been described above, the embodiments described above are merely examples, and other embodiments may also be conceivable.

[0108] In the above-described embodiment, the joint portion 40 protrudes from each of the four sides of the rectangle formed by the outer edge of the panel body 12 in the inner panel 10. However, it is sufficient for the joint portion 40 to protrude from at least one of the four sides, and the remaining sides can be joined by known joining methods using fasteners such as cable ties. However, it is more preferable for the joint portion 40 to protrude from at least two of the four sides, and most preferable for the joint portion 40 to protrude from each of the four sides, as in the above-described embodiment.

[0109] Furthermore, in the above-described embodiment, similar to the joint portion 40, the joined portion 50 (for example, the joining hole 52) is provided on each of the four sides. However, it is sufficient to provide the joined portion 50 on at least one of the four sides, and the remaining sides can be joined by known joining methods using fasteners such as cable ties. However, from the viewpoint of ensuring the joining strength between adjacent panels, it is more preferable to provide the joined portion 50 on at least two sides. In addition, in order to allow the outer joining projection 87, which serves as an outer dome joint provided on the outer dome structure 80, to be inserted, it is most preferable to provide the joined portion 50 on each of the four sides, as in the above-described embodiment.

[0110] Furthermore, in the above-described embodiment, the joint portion 40 is formed by joining pieces 41 to 45 that are superimposed on the joining piece missing portion 51 of the panel body 12, and joining projections 46 that are inserted into the joining hole 52. However, it is not limited to this, and joint portions 40 with configurations other than those described above may be used. For example, a joint portion 40 that is joined to the panel body 12 in a state where it is bent perpendicular to the panel body 12, such as the connecting projection 85 provided on the outer panel 82 that constitutes the outer dome structure 80, may be provided on the inner panel 10. In this case, adjacent panels may be joined by bringing the respective joint portions 40 of two adjacent panels into contact and joining them. In this case, fasteners such as staplers, or binding devices such as tape or cable ties may be used to join the joint portions 40 together.

[0111] Furthermore, in the above-described embodiment, the panel body 12 is provided with a notch 28, and the panel body 12 is bent so that two parts located on opposite sides of the notch 28 overlap, forming a curved surface on the surface of the panel body. However, the embodiment is not limited to this, and the panel body 12 does not necessarily have to be provided with a notch 28.

[0112] Furthermore, in the above-described embodiment, the means for assembling the inner dome structure 60 to the outer dome structure 80 is to use the joint portion 40 and the joined portion 50 provided on the inner panel 10 (i.e., the lower panel) that constitutes the side body portion of the inner dome structure 60. Specifically, the joint pieces 41-45 and joint projection 46 of the lower panel are joined to the outer dome joined portion (e.g., outer joint hole 88, etc.) of the outer dome structure 80, and the outer dome joint portion is joined to the joined portion 50 (e.g., joint hole 52, etc.) of the lower panel. However, the invention is not limited to this, and the inner dome structure 60 may also be assembled to the outer dome structure 80 using fasteners such as cable ties. [Explanation of Symbols]

[0113] 10. Inner panel (panel) 12 Panel Body Units 21-26 27 Overlap portion 28 cuts 29 Insertion piece 30 insertion holes 40 Joint 41~45 Joint piece 46 Joint protrusion 50 Part to be joined 51 Joint piece missing part 52 Junction hole (hole) 60 Inner dome structure 80 Outer dome structure 81 Bottom 82 Outer Panel 84 panel pieces 85 Connecting protrusion 86 Outer joint piece (outer dome joint) 87 Outer joint protrusion (outer dome joint) 88 Outer joining hole (hole, outer dome joined part) 100 Assembled Structures 110 Dome Structure Unit 120 Fuselage structure 122 Aperture CL diagonal L1, L2, L3 folding lines Ra lacks domain Rb's key areas

Claims

1. An inner dome structure located inside an outer dome structure, The system comprises a plurality of panels, each having a panel body and a joint provided along the outer edge of the panel body. The plurality of panels are constructed by joining two panels that are adjacent to each other in the inner dome structure at their respective joints, thereby combining the plurality of panels. The aforementioned joint portion is composed of a protrusion that extends from the outer edge of the panel body outward from the panel body, Of the two panels, the joint portion of one panel is joined to a joint portion provided along the outer edge of the panel body of the other panel, in the direction in which the two panels are aligned. The portion to be joined is a part of the panel body adjacent to the area on the outer edge of the panel body where the protrusion does not protrude. An inner dome structure in which the joint portion of one panel is superimposed on the jointed portion of the other panel and engaged with the jointed portion of the other panel while being aligned with the surface of the panel body of the other panel.

2. In the combination of the aforementioned plurality of panels, each of the panel bodies of the plurality of panels is bent such that the surface of the panel body forms a curved surface. The outer edge of the panel body in its bent state is rectangular. Of the four sides included in the outer edge, the joint protrudes from at least two sides. The inner dome structure according to claim 1, wherein the joined portion is provided along each of at least two of the four sides.

3. The inner dome structure according to claim 2, wherein in each of the plurality of panels, the joint portion protrudes from each of the four sides, and the joined portion is provided along each of the four sides.

4. Each of the aforementioned plurality of panels is provided with the joining portion and the joined portion, One diagonal in the rectangle formed by the outer edge bisects the surface of the panel body in the bent state. The inner dome structure according to claim 2 or 3, wherein in each of the plurality of panels, the position of the joint and the position of the joined portion are symmetrical with respect to one diagonal.

5. A fold line is formed in the region of the outer edge where the joint portion protrudes. The inner dome structure according to any one of claims 1 to 4, wherein the fold line is provided on the outer surface of the panel that faces the inside of the inner dome structure.

6. Each of the aforementioned multiple panels is provided with a plurality of joints and joined portions, At the bottom of the outer dome structure, at least one of the outer dome joint portion and the outer dome joined portion is provided. When the outer dome joint is provided at the bottom of the outer dome structure, the outer dome joint is joined to the joint provided on the lower panel of the plurality of panels, where a part of the outer edge of the panel body faces the bottom of the outer dome structure. The inner dome structure according to any one of claims 1 to 5, wherein, if the outer dome connecting portion is provided at the bottom of the outer dome structure, the connecting portion provided on the lower panel is connected to the outer dome connecting portion.

7. Of the parts to be joined provided on the lower panel, the part to which the outer dome joint is joined has a hole into which the outer dome joint is inserted. The inner dome structure according to claim 6, wherein the hole is provided in the region of the outer edge of the panel body of the lower panel in which the joint portion protrudes.

8. When the two panels are joined together, the joint portion of one panel and the joint portion of the other panel are adjacent to each other, The joint portion of one panel overlaps the outer surface of the panel body of the other panel that faces the outside of the inner dome structure, and The inner dome structure according to any one of claims 1 to 7, wherein the joint of the other panel overlaps the outer surface of the panel body of the one panel.

9. The joining portion of the other panel has a hole into which the joining portion of the first panel is inserted. The inner dome structure according to any one of claims 1 to 8, wherein the hole is provided in the region of the outer edge of the panel body of the other panel in which the joint portion of the other panel protrudes.

10. The panel body has a notch formed in it. In the combination of the plurality of panels, the panel body of each of the plurality of panels is bent such that two parts of the panel body that are located on opposite sides of the cut overlap and the surface of the panel body forms a curved surface, according to any one of claims 1 to 9.

11. An inner dome structure according to any one of claims 1 to 10, A dome structure unit having an inner dome structure disposed inside an outer dome structure to which the inner dome structure is attached.

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