Movable structure

Abstract

To provide a movable structure capable of performing smooth movement such as telescopic motion or oscillation.SOLUTION: A movable structure has a first movable body 5 and a second movable body 6 which are formed by providing notches 5a, 5b, 6a, 6b at predetermined places on an outer peripheral edge of one sheet S, and by bending and forming along the notches 5a, 5b, 6a, 6b. Further, open holes 5c-5e, 6c-6e are formed on a place along the place to be bent and formed, on one sheet S.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a movable structure. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there has been known a product in which a bellows structure is formed by folding paper or resin in mountain and valley directions (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3136705 Summary of the Invention [Problem to be solved by the invention]

[0004] However, although the above-mentioned bellows structure can rotate freely back and forth and left and right, there is a problem in that it cannot perform smooth movements such as expansion and contraction or swinging.

[0005] In view of the above problems, an object of the present invention is to provide a movable structure capable of smooth movements such as expansion, contraction and swinging. [Means for solving the problem]

[0006] The above object of the present invention can be achieved by the following means. Note that the parentheses indicate reference symbols of the embodiments described below, but the present invention is not limited thereto.

[0007] According to the movable structure of claim 1, A sheet (S) formed into a predetermined shape is divided into a plurality of regions, The plurality of regions include: By assembling Prismatic 1st structure body (for example, leading car 2) A first region (e.g., a first region S1) that can be formed; By assembling Prismatic 2nd structure body (e.g., intermediate car 3) A second region (e.g., a third region S3) that can be formed; Connecting the first region and the second region At the same time, a movable body (for example, the first movable body 5) can be formed by assembling. and a third region (e.g., a second region S2), The first region is First folding lines (for example, folding lines 10e to 10h) formed at predetermined intervals, A second folding line (e.g., folding line 10a) formed in a direction intersecting the first folding line, The second folding line is formed at a location that separates the first region from the third region, The second region is Third folding lines (for example, folding lines 10j to 10m) formed at predetermined intervals; A fourth folding line (e.g., folding line 10b) formed in a direction intersecting the third folding line, The fourth folding line is formed at a location that divides the second region and the third region, The third region is A first notch (e.g., notch 5a) provided on the upper outer circumferential edge; A second notch (e.g., notch 5b) provided on the lower outer circumferential edge and facing the first notch; A fifth folding line (for example, a mountain fold line 10i) connecting the first notch and the second notch; The fifth folding line and a through hole (for example, through holes 5c to 5e) formed at an intersection of an extension line of the first folding line and the third folding line, The fifth folding line is formed to be parallel to the second folding line and the fourth folding line, The first structure is The assembly is assembled by folding along the first folding line and then folding along the second folding line, The second structure is The assembly is assembled by folding along the third folding line and further folding along the fourth folding line, The movable body is When the fifth folding line is folded and formed, the first notch, the second notch and the through hole are folded and formed along the fifth folding line, and assembled. Thus, The first structure and the movable body are connected to each other, and the second structure and the movable body are connected to each other and assembled together. It is characterized by the following.

[0010] Also, claims 2 According to the invention, the above claim 1 In the movable structure described in the above, the sheet (S) is characterized in that it is a paper craft. Effect of the Invention

[0011] Next, the effects of the present invention will be described with reference to the drawings. Note that the reference symbols in the parentheses are those of the embodiments described below, but the present invention is not limited thereto.

[0012] According to the invention of claim 1, A sheet (S) formed into a predetermined shape is divided into a plurality of regions. The plurality of regions are: By assembling Prismatic 1st structure body (for example, leading car 2) A first region (e.g., first region S1) that can be formed by assembling Prismatic 2nd structure body (e.g., intermediate car 3) A second region (e.g., a third region S3) that can be formed and connects the first region and the second region At the same time, a movable body (for example, the first movable body 5) can be formed by assembling. At least a third region (for example, a second region S2) The first region has first folding lines (e.g., folding lines 10e-10h) formed at a predetermined interval and a second folding line (e.g., folding line 10a) formed in a direction intersecting the first folding lines, the second folding lines being formed at a location separating the first region from the third region. The second region has third folding lines (e.g., folding lines 10j-10m) formed at a predetermined interval and a fourth folding line (e.g., folding line 10b) formed in a direction intersecting the third folding lines, the fourth folding line being formed at a location separating the second region from the third region. Furthermore, the third region has a first notch (e.g., notch 5a) provided on the upper outer periphery, a second notch (e.g., notch 5b) provided on the lower outer periphery and facing the first notch, a fifth folding line (e.g., mountain fold line 10i) connecting the first notch and the second notch, and a through hole (e.g., through holes 5c to 5e) formed at the intersection of the fifth folding line and an extension line of the first folding line and the third folding line, and the fifth folding line is formed to be parallel to the second folding line and the fourth folding line. Thus, the first structure is assembled by folding along the first folding line and further folding along the second folding line. The second structure is assembled by folding along the third folding line and further folding along the fourth folding line. Furthermore, when the movable body is folded along the fifth folding line, the first notch, the second notch and the through hole are folded along the fifth folding line, and assembled. Thus, the first structure and the movable body are connected in this manner, and further, the second structure and the movable body are assembled in a connected state. This enables the movable body (first movable body 5) to expand and contract and swing. That is, by providing the notches (5a, 5b) and the through holes (5c to 5e), the movable range of the movable body (first movable body 5) is increased. This enables the movable body (first movable body 5) to move more smoothly, such as expanding and contracting and swinging.

[0013] Thus, according to the present invention, smooth movements such as expansion, contraction and swinging are possible.

[0016] Furthermore, claims 2 According to the invention, since the sheet (S) is a paper craft, a movable structure can be formed at low cost. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1A is a perspective view showing a movable structure according to one embodiment of the present invention, and FIG. [Diagram 2] (a) is a plan view showing a seat with the movable structure of the same embodiment deployed, excluding the front part of the leading car and the rear part of the rear car, (b-1) is a plan view showing the front part of the leading car in the deployed state, and (b-2) is a plan view showing the rear part of the rear car in the deployed state. [Diagram 3] 5(a) and 5(b) are perspective views showing a process of assembling the movable structure according to the embodiment, excluding the front part of the leading car and the rear part of the rear car. [Figure 4] 1(a) to 1(c) are perspective views showing a process for assembling the front part of the leading car. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the following description, when directions such as up, down, left and right are indicated, they refer to up, down, left and right when viewed from the front of the figure.

[0019] As shown in Fig. 1, the movable structure 1 according to this embodiment is a paper craft of a train. More specifically, as shown in Fig. 1, the movable structure 1 has a substantially rectangular prism-shaped leading car 2, a substantially rectangular prism-shaped middle car 3, and a substantially rectangular prism-shaped rear car 4. Furthermore, the movable structure 1 has a first movable body 5 consisting of a through-hole connecting the leading car 2 and the middle car 3, and a second movable body 6 consisting of a through-hole connecting the middle car 3 and the rear car 4.

[0020] The first movable body 5 and the second movable body 6 are swingable. Therefore, as shown in FIG. 1(a), the leading vehicle 2 connected to the first movable body 5 swings left and right as indicated by the arrow Y1 (see the illustration, from the solid line position to the broken line position, or from the broken line position to the solid line position). Furthermore, the rear vehicle 4 connected to the second movable body 6 swings left and right as indicated by the arrow Y2 (see the illustration, from the solid line position to the broken line position, or from the broken line position to the solid line position). Although not shown, the leading vehicle 2 connected to the first movable body 5 and the rear vehicle 4 connected to the second movable body 6 can also swing up and down.

[0021] On the other hand, the first movable body 5 and the second movable body 6 are also extendable and retractable. Therefore, as shown in Fig. 1(b), the leading car 2 and the middle car 3 connected to the first movable body 5 can move in the front-rear direction as shown in the direction of the arrow Y3 (see the illustration, from the solid line position to the broken line position, or from the broken line position to the solid line position). Furthermore, the middle car 3 and the rear car 4 connected to the second movable body 6 can move in the front-rear direction as shown in the direction of the arrow Y4 (see the illustration, from the solid line position to the broken line position, or from the broken line position to the solid line position).

[0022] Thus, the movable structure 1 as described above is formed as follows. That is, the movable structure 1 is mainly composed of one sheet S of approximately rectangular shape made of paper craft, as shown in Fig. 2(a). This sheet S has folding lines 10a formed linearly from the upper side surface to the lower side surface at a fixed interval from the left side surface in the figure in the longitudinal direction. As a result, a first area S1 of approximately rectangular shape in which the leading car 2 can be formed is defined by the left side surface of the sheet S and the folding lines 10a.

[0023] Furthermore, in the sheet S, a fold line 10b is formed linearly from the upper surface to the lower surface at a certain distance from the fold line 10a in the longitudinal direction. As a result, the fold lines 10a and 10b define a second region S2 having a vertically elongated rectangular shape in which the first movable body 5 can be formed.

[0024] Furthermore, in the sheet S, a fold line 10c is formed linearly from the upper side surface to the lower side surface at a certain distance from the fold line 10b in the longitudinal direction. As a result, a substantially rectangular third region S3 in which the intermediate car 3 can be formed is defined by the fold lines 10b and 10c.

[0025] Furthermore, the seat S has a straight fold line 10d extending from the upper side surface to the lower side surface at a fixed distance from the fold line 10c in the longitudinal direction. As a result, the fold lines 10c and 10d define a vertically elongated rectangular fourth region S4 in which the second movable body 6 can be formed. Furthermore, the fold line 10d and the right side surface of the seat S define a substantially rectangular fifth region S5 in which the rear vehicle 4 can be formed.

[0026] Incidentally, in the first region S1, as shown in FIG. 2(a), the folding lines 10e to 10h are formed linearly from the left side surface toward the longitudinal direction at a predetermined interval to a position where they contact the folding line 10a. As a result, the folding line 10e, the folding line 10f, the left side surface of the seat S, and the folding line 10a form the left side portion 2a of the leading car 2, which is substantially rectangular. The folding line 10f, the left side surface of the seat S, the folding line 10g, and the folding line 10a form the top portion 2b of the leading car 2, which is substantially rectangular. Furthermore, the folding line 10g, the left side surface of the seat S, the folding line 10h, and the folding line 10a form the right side portion 2c of the leading car 2, which is substantially rectangular. Furthermore, the folding line 10h, the left side surface of the seat S, the lower side surface of the seat S, and the folding line 10a form the bottom portion 2d of the leading car 2, which is substantially rectangular.

[0027] A horizontally elongated, generally rectangular connecting piece 2e that can be bent around the bending line 10e is provided in a continuous manner on the upper portion (above the bending line 10e) of the left side portion 2a of the leading car 2. A slit-shaped insertion opening 2e1 is provided in the center of the bending line 10f on the connecting piece 2e.

[0028] A generally rectangular connecting piece 2f that can be bent is provided on the left side surface 2a1 of the left side portion 2a of the leading car 2. A slit-shaped insertion opening 2f1 is provided in the center of the left side surface 2a1 of the connecting piece 2f. A slit-shaped insertion opening 2f2 is further provided on the lower left side of the connecting piece 2f.

[0029] Meanwhile, on the upper left side surface 2a1 side (above the bending line 10e) of the left side portion 2a of the leading car 2, i.e., on the left side surface 2e2 side of the connecting piece 2e, a series of small rectangular protrusions 2g are provided that can be bent around the bending line 10e. Note that the protrusions 2g and the connecting piece 2e are separate.

[0030] Meanwhile, a small rectangular protrusion 2h that can be bent around the bending line 10f is provided in a row on the left side surface 2a1 side of the lower part of the left side portion 2a of the leading car 2 (below the bending line 10f), i.e., on the left side surface 2b1 side of the top portion 2b of the leading car 2. Note that the protrusion 2h and the top portion 2b of the leading car 2 are separate.

[0031] On the other hand, a generally rectangular connecting piece 2i that can be bent is provided in a continuous manner on the left side surface 2c1 of the right side portion 2c of the leading car 2, starting from the left side surface 2c1. A slit-shaped insertion opening 2i1 is provided in the center of the left side surface 2c1 of the connecting piece 2i. Furthermore, a slit-shaped insertion opening 2i2 is provided on the lower left side of the connecting piece 2i.

[0032] Meanwhile, on the left side surface 2c1 side of the upper part (above the bending line 10g) of the right side portion 2c of the leading car 2, i.e., on the left side surface 2b1 side of the top portion 2b of the leading car 2, a series of small rectangular protrusions 2j that can be bent around the bending line 10g are provided. Note that the protrusions 2j and the top portion 2b of the leading car 2 are separate.

[0033] Meanwhile, a series of small rectangular protrusions 2k that can be bent around the bending line 10h are provided on the left side surface 2c1 side of the lower part (below the bending line 10h) of the right side portion 2c of the leading car 2, that is, on the left side surface 2d1 side of the bottom portion 2d of the leading car 2. The protrusions 2k and the bottom portion 2d of the leading car 2 are separate.

[0034] On the other hand, a semi-elliptical insertion piece 2l that can be folded around the lower surface 2d2 is provided in a central portion of the lower surface 2d2 of the bottom 2d of the leading car 2. Furthermore, a slit-shaped insertion port 2d3 is provided in the central portion of a folding line 10h formed on the bottom 2d of the leading car 2.

[0035] As shown in FIG. 2(a), the second region S2 has a mountain fold line 10i formed linearly from the upper side to the lower side in the center. An inverted mountain-shaped notch 5a is provided along the mountain fold line 10i on the upper side of the second region S2, and a mountain-shaped notch 5b is provided along the mountain fold line 10i on the lower side of the second region S2. Furthermore, diamond-shaped through holes 5c to 5e are provided at predetermined intervals from the upper side to the lower side in the second region S2. These through holes 5c to 5e are provided along the mountain fold line 10i. More specifically, the through hole 5c is provided at a position continuous with the folding line 10f, the through hole 5d is provided at a position continuous with the folding line 10g, and the through hole 5e is provided at a position continuous with the folding line 10h.

[0036] As shown in FIG. 2(a), in the third region S3, the folding lines 10j to 10m are formed linearly from the folding line 10b in the longitudinal direction at a predetermined interval to a position where the folding lines 10j to 10m contact the folding line 10c. As a result, the folding lines 10j, 10b, 10k, and 10c form the left side portion 3a of the intermediate car 3 having a horizontally elongated rectangular shape. The folding lines 10k, 10b, 10l, and 10c form the top portion 3b of the intermediate car 3 having a horizontally elongated rectangular shape. Furthermore, the folding lines 10l, 10b, 10m, and 10c form the right side portion 3c of the intermediate car 3 having a rectangular shape. Furthermore, the folding lines 10m, 10b, the lower surface of the sheet S, and the folding line 10c form the bottom portion 3d of the intermediate car 3 having a substantially rectangular shape.

[0037] A horizontally elongated, generally rectangular connecting piece 3e that can be bent about the bending line 10j is provided in a continuous manner on the upper portion (above the bending line 10j) of the left side portion 3a of the intermediate car 3. A slit-shaped insertion opening 3e1 is provided in the center of the bending line 10j on the connecting piece 3e.

[0038] A semi-elliptical insertion piece 3f that can be folded around the lower surface 3d1 is provided in a continuous manner in the central portion of the lower surface 3d1 of the bottom 3d of the intermediate car 3. Furthermore, a slit-shaped insertion port 3d2 is provided in the central portion of a folding line 10m formed on the bottom 3d of the intermediate car 3.

[0039] As shown in FIG. 2(a), the fourth region S4 has a mountain fold line 10n formed linearly from the upper side to the lower side in the center. An inverted mountain-shaped notch 6a is provided along the mountain fold line 10n on the upper side of the fourth region S4, and a mountain-shaped notch 6b is provided along the mountain fold line 10n on the lower side of the fourth region S4. Furthermore, diamond-shaped through holes 6c to 6e are provided at predetermined intervals from the upper side to the lower side in the fourth region S4. These through holes 6c to 6e are provided along the mountain fold line 10n. More specifically, the through hole 6c is provided at a position continuous with the folding line 10k, the through hole 6d is provided at a position continuous with the folding line 10l, and the through hole 6e is provided at a position continuous with the folding line 10m.

[0040] As shown in FIG. 2(a), in the fifth region S5, folding lines 10o to 10r are formed linearly from the left side surface toward the longitudinal direction at a predetermined interval to a position where the folding lines 10o, 10d, 10p, and the right side surface of the seat S form a substantially rectangular left side portion 4a of the rear vehicle 4. Then, folding lines 10p, 10d, 10q, and the right side surface of the seat S form a rectangular top portion 4b of the rear vehicle 4. Then, folding lines 10q, 10d, 10r, and the right side surface of the seat S form a substantially rectangular right side portion 4c of the rear vehicle 4. Furthermore, folding lines 10r, 10d, the lower side surface of the seat S, and the right side surface of the seat S form a substantially rectangular bottom portion 4d of the rear vehicle 4.

[0041] A horizontally elongated, generally rectangular connecting piece 4e that can be bent around the bending line 10o is provided in a continuous manner on the upper portion (above the bending line 10o) of the left side portion 4a of the rear vehicle 4. A slit-shaped insertion opening 4e1 is provided in the center of the bending line 10o on the connecting piece 4e.

[0042] A bendable, generally rectangular, connecting piece 4f is provided on the right side surface 4a1 of the left side portion 4a of the rear vehicle 4. The connecting piece 4f is provided with a slit-shaped insertion opening 4f1 in the center of the right side surface 4a1. Furthermore, a slit-shaped insertion opening 4f2 is provided on the lower right side of the connecting piece 4f.

[0043] On the other hand, a small rectangular protrusion 4g that can be bent around the bending line 10o is provided in a row on the right side surface 4a1 side of the upper portion (above the bending line 10o) of the left side portion 4a of the rear vehicle 4, that is, on the right side surface 4e2 side of the connecting piece 4e. Note that this protrusion 4g and the connecting piece 4e are separate.

[0044] Meanwhile, a series of small rectangular protrusions 4h that can be bent around the bending line 10p are provided on the right side surface 4a1 side of the lower part (below the bending line 10p) of the left side portion 4a of the rear vehicle 4, that is, on the right side surface 4b1 side of the top portion 4b of the rear vehicle 4. The protrusions 4h and the top portion 4b of the rear vehicle 4 are separate.

[0045] On the other hand, a bendable, generally rectangular, connecting piece 4i is provided on the right side surface 4c1 of the right side portion 4c of the rear vehicle 4. The connecting piece 4i is provided with a slit-shaped insertion opening 4i1 in the center of the right side surface 4c1. Furthermore, a slit-shaped insertion opening 4i2 is provided on the lower right side of the connecting piece 4i.

[0046] Meanwhile, a series of small rectangular protrusions 4j that can be bent around the bending line 10q are provided on the right side surface 4c1 side of the upper portion (above the bending line 10q) of the right side portion 4c of the rear vehicle 4, that is, on the right side surface 4b1 side of the top portion 4b of the rear vehicle 4. The protrusions 4j and the top portion 4b of the rear vehicle 4 are separate.

[0047] Meanwhile, a series of small rectangular protrusions 4k that can be bent around the bending line 10r are provided on the right side surface 4c1 side of the lower part (below the bending line 10r) of the right side portion 4c of the rear vehicle 4, that is, on the right side surface 4d1 side of the bottom portion 4d of the rear vehicle 4. The protrusions 4k and the bottom portion 4d of the rear vehicle 4 are separate.

[0048] On the other hand, a semi-elliptical insertion piece 4l that can be folded around the lower surface 4d2 is provided in the center of the lower surface 4d2 of the bottom 4d of the rear vehicle 4. Furthermore, a slit-shaped insertion port 4d3 is provided in the center of a folding line 10r formed on the bottom 4d of the rear vehicle 4.

[0049] Thus, in this manner, a substantially rectangular sheet S made of paper craft is formed.

[0050] Incidentally, the front part 20 of the leading car 2 shown in FIG. 1 is formed in a horizontally elongated, generally rectangular shape as shown in FIG. 2(b-1), and a straight bending line 20a1 is formed on the left side surface 20a side from the upper side surface 20c to the lower side surface 20d. Furthermore, a straight bending line 20d1 is formed on the right side surface 20b side of the front part 20 from the upper side surface 20c to the lower side surface 20d. Furthermore, a semi-elliptical insertion piece 20e that can be bent with the upper side surface 20c as a base point is provided in a continuous manner in the center part of the upper side surface 20c of the front part 20. Furthermore, a semi-elliptical insertion piece 20f that can be bent with the lower side surface 20d as a base point is provided in a continuous manner in the center part of the lower side surface 20d of the front part 20.

[0051] On the other hand, the rear part 40 of the rear vehicle 4 shown in FIG. 1 is made of a horizontally elongated, approximately rectangular paper craft, as shown in FIG. 2(b-2), and a straight fold line 40a1 is formed on the left side surface 40a side from the upper side surface 40c to the lower side surface 40d. Furthermore, a straight fold line 40d1 is formed on the right side surface 40b side of the rear part 40 from the upper side surface 40c to the lower side surface 40d. Furthermore, a semi-elliptical insertion piece 40e that can be bent with the upper side surface 40c as a base point is provided in a continuous manner in the center part of the upper side surface 40c of the rear part 40. Furthermore, a semi-elliptical insertion piece 40f that can be bent with the lower side surface 40d as a base point is provided in a continuous manner in the center part of the lower side surface 40d of the rear part 40.

[0052] Thus, the sheet S formed as described above is folded as shown in FIGS. 3 and 4 to form the movable structure 1 shown in FIG.

[0053] That is, as shown in FIG. 3(a), the left side portion 2a of the leading vehicle 2 is bent toward the top portion 2b of the leading vehicle 2 with the bending line 10f as a base point. Furthermore, the left side portion 3a of the intermediate vehicle 3 is bent toward the top portion 3b of the intermediate vehicle 3 with the bending line 10k as a base point. Furthermore, the left side portion 4a of the rear vehicle 4 is bent toward the top portion 4b of the rear vehicle 4 with the bending line 10p as a base point. By this bending, the second region S2 connected to the left side portion 2a of the leading vehicle 2 and the left side portion 3a of the intermediate vehicle 3 is also bent toward the through hole 5c as a base point. Furthermore, the fourth region S4 connected to the left side portion 3a of the intermediate vehicle 3 and the left side portion 4a of the rear vehicle 4 is also bent toward the through hole 6c as a base point. The second region S2 is formed by folding along a folding line 10i, and the fourth region S4 is formed by folding along a folding line 10n.

[0054] Next, as shown in FIG. 3(a), the right side portion 2c of the leading car 2 is bent toward the top portion 2b of the leading car 2, with the bending line 10g as the base point. Furthermore, the right side portion 3c of the intermediate car 3 is bent toward the top portion 3b of the intermediate car 3, with the bending line 10l as the base point. Furthermore, the right side portion 4c of the rear car 4 is bent toward the top portion 4b of the rear car 4, with the bending line 10q as the base point. By this bending, the second region S2 connected to the right side portion 2c of the leading car 2 and the right side portion 3c of the intermediate car 3 is also bent toward the through hole 5d as the base point. Furthermore, the fourth region S4 connected to the right side portion 3c of the intermediate car 3 and the right side portion 4c of the rear car 4 is also bent toward the through hole 6d as the base point.

[0055] 3(b), the connecting piece 2e of the leading car 2 is bent toward the top 2b of the leading car 2, using the bending line 10e as a base point. Furthermore, the connecting piece 3e of the intermediate car 3 is bent toward the top 3b of the intermediate car 3, using the bending line 10j as a base point. And further, the connecting piece 4e of the rear car 4 is bent toward the top 4b of the rear car 4, using the bending line 10o as a base point.

[0056] 3(b), the bottom 2d of the leading car 2 is bent toward the top 2b of the leading car 2, using the bending line 10h as a base point, so that the insertion piece 2l is inserted into the insertion opening 2e1. Furthermore, the bottom 3d of the intermediate car 3 is bent toward the top 3b of the intermediate car 3, using the bending line 10m as a base point, so that the insertion piece 3f is inserted into the insertion opening 3e1. Furthermore, the bottom 4d of the rear car 4 is bent toward the top 4b of the rear car 4, using the bending line 10r as a base point, so that the insertion piece 4l is inserted into the insertion opening 4e1.

[0057] Thus, by doing this, the leading car 2 without the front part 20, the middle car 3, the rear car 4 without the rear part 40, the first movable body 5, and the second movable body 6 are formed in the movable structure 1 shown in Fig. 1. Note that, as shown in Fig. 4(a), an internal space K is formed inside.

[0058] Next, as shown in FIG. 4(a), the connecting piece 2f is bent inwardly with the left side surface 2a1 of the left side portion 2a of the leading vehicle 2 as a base point, and the connecting piece 2i is bent inwardly with the left side surface 2c1 of the right side portion 2c of the leading vehicle 2 as a base point. Then, the connecting piece 2i is inserted into the insertion port 2f2 of the connecting piece 2f thus bent, and the connecting piece 2f is inserted into the insertion port 2i2 of the connecting piece 2i. This connects the connecting piece 2f and the connecting piece 2i. Although not shown, the connecting piece 4f and the connecting piece 4i of the rear vehicle 4 are also connected in the same manner. That is, the connecting piece 4f is bent inwardly with the right side surface 4a1 of the left side portion 4a of the rear vehicle 4 as a base point, and the connecting piece 4i is bent inwardly with the right side surface 4c1 of the right side portion 4c of the rear vehicle 4 as a base point. Then, the connecting piece 4i is inserted into the insertion opening 4f2 of the connecting piece 4f thus bent, and the connecting piece 4f is inserted into the insertion opening 4i2 of the connecting piece 4i.

[0059] Next, as shown in Fig. 4(b), the left side surface 20a of the front part 20 of the leading car 2 is inserted into the internal space K so as to be hidden by the top part 2b of the leading car 2 and supported by the protruding pieces 2j and 2h. After that, the insertion piece 20e is inserted into the insertion port 2i1, and the insertion piece 20f is inserted into the insertion port 2f1.

[0060] Next, as shown in Fig. 4(c), the right side surface 20b of the front portion 20 of the leading car 2 is inserted into the internal space K so as to be concealed by the bottom portion 2d of the leading car 2 and supported by the protruding pieces 2k, 2g. This completes the formation of the front portion 20 of the leading car 2 as shown in Fig. 1. Although not shown, the rear portion 40 of the rear car 4 is also formed in a similar manner.

[0061] That is, the left side surface 40a of the rear portion 40 of the rear vehicle 4 is inserted into the internal space K so as to be concealed by the top portion 4b of the rear vehicle 4 and supported by the protruding pieces 4j, 4h. Then, the insertion piece 40e is inserted into the insertion port 4i1, and the insertion piece 40f is inserted into the insertion port 4f1. Next, the right side surface 40b of the rear portion 40 of the rear vehicle 4 is inserted into the internal space K so as to be concealed by the bottom portion 4d of the rear vehicle 4 and supported by the protruding pieces 4k, 4g.

[0062] Thus, in this manner, the movable structure 1 shown in FIG. 1 is formed.

[0063] According to the embodiment described above, an inverted mountain-shaped notch 5a is provided on the upper side of one sheet S, and a mountain-shaped notch 5b is provided on the lower side of one sheet S. Then, by folding along the mountain fold line 10i formed along the notches 5a and 5b, the first movable body 5 can expand and contract and swing. That is, by providing the notches 5a and 5b, a gap is generated, and the range of motion of the first movable body 5 is expanded by the gap. This allows the first movable body 5 to expand and contract and swing. Also, the second movable body 6 can expand and contract and swing for the same reason.

[0064] Therefore, according to this embodiment, smooth movements such as expansion, contraction and swinging are possible.

[0065] Furthermore, according to this embodiment, the through holes 5c-5e are provided at predetermined intervals along the mountain fold line 10i, and the through holes 5c-5e further increase the range of motion of the first movable body 5. This allows the first movable body 5 to move more smoothly, such as expanding and contracting and swinging. For the same reason, the second movable body 6 also allows for smoother movement, such as expanding and contracting and swinging.

[0066] On the other hand, according to this embodiment, the leading car 2, the intermediate car 3, the rear car 4, the first movable body 5 consisting of a through-hole connecting the leading car 2 and the intermediate car 3, and the second movable body 6 consisting of a through-hole connecting the intermediate car 3 and the rear car 4 are formed by a single sheet S. This can reduce the labor required for assembly.

[0067] That is, in the past, when the bellows structure described in Patent Document 1 was used as a connection between vehicles, there was a problem that the vehicles had to be attached to each other using an adhesive, which resulted in a problem of extremely time-consuming assembly work.

[0068] However, in this embodiment, the leading car 2, the intermediate car 3, the rear car 4, the first movable body 5 consisting of a through-hole connecting the leading car 2 and the intermediate car 3, and the second movable body 6 consisting of a through-hole connecting the intermediate car 3 and the rear car 4 are formed from a single sheet S. Therefore, there is no need to use adhesive, which reduces the labor required for assembly.

[0069] In addition, the first movable body 5 consisting of a through-hole connecting the leading car 2 and the intermediate car 3, and the second movable body 6 consisting of a through-hole connecting the intermediate car 3 and the rear car 4 are formed, so that it is possible to express movements close to those of a real vehicle. That is, the extension and retraction and swinging movements of the first movable body 5 and the second movable body 6 make it possible for each vehicle to extend and retract and swing as shown in Fig. 1, and therefore it is possible to express movements close to those of a real vehicle.

[0070] The shapes and the like shown in this embodiment are merely examples, and various modifications and changes are possible within the scope of the gist of the present invention described in the claims. For example, the movable structure 1 is formed from paper craft, but the present invention is not limited to this, and any bendable material such as resin may be used. However, forming the movable structure from paper craft is preferable because it can be formed at a low cost.

[0071] In addition, in this embodiment, the first movable body 5 and the second movable body 6 are formed in one stage, but they may be formed in multiple stages to have a bellows shape. That is, if a small gap is provided so that the second regions S2 are formed in multiple stages so that they do not communicate with the through holes 5c to 5e, the first movable body 5 can be formed in multiple stages, and thus can be formed in a bellows shape. Also, if a small gap is provided so that the fourth regions S4 are formed in multiple stages so that they do not communicate with the through holes 6c to 6e, the second movable body 6 can be formed in multiple stages, and thus can be formed in a bellows shape.

[0072] Furthermore, in this embodiment, a paper craft train is exemplified as the movable structure 1, but it is not limited thereto and can be applied to any object such as a doll, a bus, or a container for storing light items such as snacks. Also, a single sheet S can be formed of only the first movable body 5 and the second movable body 6 to form a bellows structure. In this case, it can be used as a cover for electric wires, etc.

[0073] Furthermore, in this embodiment, a quadrangular prism shape is exemplified, but the present invention is not limited to this, and can be applied to any shape, such as a hexagonal, heptagonal or other prismatic shape.

[0074] On the other hand, in this embodiment, an example is shown in which the front portion 20 of the leading vehicle 2 and the rear portion 40 of the rear vehicle 4 are provided separately from the seat S, but this is not limited to this, and the front portion 20 of the leading vehicle 2 and the rear portion 40 of the rear vehicle 4 may be formed by the seat S. [Explanation of symbols]

[0075] 1 Movable structure 2 Leading car (first unit) 3 Intermediate cars (first coupler, second coupler) 4 Rear vehicle (first connected body, second connected body) 5 First movable body (movable body) 5a,5b notch 5c~5e Through hole 6 Second movable body (movable body) 6a,6b Notch 6c - 6e through - holes 10i, 10n mountain - fold lines S sheet S1 first region S2 second region S3 third region S4 fourth region S5 fifth region

Claims

1. A sheet formed into a predetermined shape is partitioned into a plurality of regions, The plurality of regions include: A first region capable of forming a prismatic first structure by assembling; a second region in which a prismatic second structure can be formed by assembling; a third region that connects the first region and the second region and that can form a movable body by assembling the third region, The first region is First folding lines formed at predetermined intervals; A second fold line is formed in a direction intersecting the first fold line, The second folding line is formed at a location that divides the first region and the third region, The second region is Third folding lines formed at predetermined intervals; a fourth fold line formed in a direction intersecting the third fold line, The fourth folding line is formed at a location that divides the second region and the third region, The third region is A first notch provided on an upper outer circumferential edge; a second notch provided on a lower outer circumferential edge and facing the first notch; a fifth folding line connecting the first notch and the second notch; The fifth folding line and a through hole formed at an intersection of an extension line of the first folding line and the third folding line, The fifth folding line is formed to be parallel to the second folding line and the fourth folding line, The first structure is The assembly is assembled by folding along the first folding line and then folding along the second folding line, The second structure is The assembly is assembled by folding along the third folding line and further folding along the fourth folding line, The movable body is When the fifth folding line is folded and formed, the first notch, the second notch and the through hole are folded and formed along the fifth folding line, and assembled. Thus, A movable structure in which the first structure and the movable body are connected to each other, and further, the second structure and the movable body are connected to each other and assembled.

2. The movable structure according to claim 1 , wherein the single sheet is a paper craft.

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