Article storage box and storage box unfolding assembly

Abstract

The present invention provides an article storage box and a storage box deployment unit that can provide sufficient upward movement for thin items and effectively push up even heavy items. [Solution] The article storage box 1 is characterized by comprising: a box body portion 11; a lid portion 12; an article pressing portion 13 that is folded and sandwiched between the bottom wall 113 and the stored article M11 when the lid is closed, and rises up to push up the stored article M11 when the lid portion 12 is opened; a push-up assist portion 14 that is folded and sandwiched between the bottom wall 113 and the article pressing portion 13 when the lid is closed, and rises up to assist the rising of the article pressing portion 13 when the lid portion 12 is opened; and a stopper portion 15 that promotes the rising of the article pressing portion 13 by restricting the movement of the end portion 131a of the article-side portion 131 of the article pressing portion 13 when the lid portion 12 is opened.

Description

Technical Field

[0001] The present invention relates to an article storage box for storing articles to be stored, and a storage box development body for constructing the article storage box.

Background Art

[0002] Conventionally, an article storage box for storing articles to be stored has been widely used (for example, see Patent Document 1). The article storage box described in this Patent Document 1 is configured such that a lid portion that can open and close an access opening for the article to be stored is connected to a box main body portion formed in a bottomed rectangular tubular shape. When the lid portion is opened, the inner bottom wall of the box main body portion is pulled up by being pulled by the lid portion, so that the article to be stored is pushed up so as to be easily taken out.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Here, the article push-up type article storage box as described above may be used for storing thin articles such as handkerchiefs and towels. However, in the current article storage box having an article push-up structure, the extrusion amount of the article when the lid portion is opened is small, and for thin articles to be stored, the feeling of the article being lifted is poor. Also, when the article to be stored is a heavy object, it may be difficult to push it up.

[0005] The present invention aims to solve such problems. That is, the present invention aims to provide an article storage box and a storage box development body that can obtain a sufficient lifting feeling for thin articles to be stored and can effectively push up even when a heavy object is used as the article to be stored.

Means for Solving the Problems

[0006] To achieve the above objective, the article storage box is formed in the shape of a bottomed cylinder, with an opening that serves as an opening for the entry and exit of the stored articles, and a box body portion in which at least a part of the peripheral edge surrounding the entry and exit opening is a straight edge; a lid portion connected to the box body portion with the straight edge as a fold, and covering the entry and exit opening so as to be openable and closable; and a portion installed inside the box body portion, which is a sheet-like material folded so that the cross shape along the plane perpendicular to the straight edge is a mountain fold shape, and in the closed state with the stored articles stored in the box body portion and the lid portion closed, it is folded and sandwiched between the bottom wall of the box body portion and the stored articles, and when the lid portion is opened, it rises up in a convex shape toward the entry and exit opening due to the restoring force against the fold, and pushes the stored articles. The lid is characterized by comprising: an article pressing upper part for finishing; a portion of a sheet-like material that is folded such that its cross-sectional shape, together with the article pressing upper part, forms a bellows-fold shape with at least one mountain-fold shape; a pressing assist portion that, when the lid is closed, is folded and sandwiched between the bottom wall and the article pressing upper part, and when the lid is opened, rises up so as to become convex toward the entry / exit opening due to the restoring force against the fold, thereby assisting the raising of the article pressing upper part; and a stopper portion that, when the lid is opened, promotes the raising of the article pressing upper part by restricting the movement of the end portion on the bottom wall side of the article-side portion of the article pressing upper part, which is located on the side of the contained article, away from the rear wall to which the lid is connected.

[0007] Furthermore, in order to achieve the above objective, the storage box unfolding body is an unfolding body for constituting the above-mentioned article storage box, comprising a main body unfolding part for forming the box body, a lid unfolding part for forming the lid, a pressing part unfolding part for forming the article pressing part, and an auxiliary part unfolding part for forming the lifting auxiliary part, wherein the stopper part is formed in the main body unfolding part. [Effects of the Invention]

[0008] According to the above-described article storage box and storage box deployment mechanism, a sufficient sense of upward movement can be obtained for thin items, and even when heavy items are stored, they can be effectively pushed upward. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view of the article storage box according to the first embodiment, showing the closed state with the articles to be stored inside and the lid closed. [Figure 2] Figure 1 shows a perspective view of an item storage box with its lid closed, but with a portion of the lid removed to reveal the interior. [Figure 3] Figures 1 and 2 are perspective views showing the article storage box with its lid open. [Figure 4] Figures 1 to 3 show a schematic diagram illustrating how the contents of an article storage box are pushed up and rise out of the entry / exit opening when the lid is opened, along a schematic cross-section of line V11-V11 in Figure 1. [Figure 5] This is a schematic diagram showing a configuration for guiding the movement of the upper part of an object being pushed, as shown in Figure 4. [Figure 6] Figures 1 to 5 are plan views showing the unfolded container for constructing the item storage box. [Figure 7] Figure 6 is a plan view showing the unfolded storage box with a portion of it turned inside out. [Figure 8] Figures 6 and 7 are plan views showing the unfolding sheets for forming the storage box unfolding structure. [Figure 9] This is a plan view showing the unfolded storage box in the second embodiment. [Figure 10] This is a plan view showing the unfolding sheet for forming the storage box unfolded body shown in Figure 9. [Figure 11] This is a perspective view of the article storage box of the third embodiment, showing it in an open state with the lid open. [Figure 12]It is a figure which shows the stopper part shown in FIG. 11 and its peripheral structure in an enlarged manner. [Figure 13] It is a plan view which shows the storage box development body for constituting the article storage box shown in FIGS. 11 and 12. [Figure 14] It is a plan view which shows the storage box development body shown in FIG. 13 in a state where a part thereof is turned over. [Figure 15] It is a plan view which shows the development sheet for forming the storage box development body shown in FIGS. 13 and 14. [Figure 16] It is a perspective view which shows the article storage box of the fourth embodiment in an open - lid state where the lid part is opened. [Figure 17] It is a plan view which shows the storage box development body for constituting the article storage box shown in FIG. 16. [Figure 18] It is a plan view which shows the development sheet for forming the storage box development body shown in FIG. 17.

Embodiments for Carrying Out the Invention

[0010] Hereinafter, an embodiment of an article storage box and a storage box development body will be described. First, the first embodiment will be described.

[0011] FIG. 1 is a perspective view which shows the article storage box according to the first embodiment in a closed - lid state where the stored article is stored and the lid part is closed. FIG. 2 is a perspective view which shows the article storage box in the closed - lid state shown in FIG. 1 with a part of the lid part removed so that the inside can be seen. Further, FIG. 3 is a perspective view which shows the article storage box shown in FIGS. 1 and 2 in an open - lid state where the lid part is opened.

[0012] The article storage box 1 of the present embodiment is a paper - made covered box having a flat rectangular block - shaped appearance in a closed - lid state, and includes a box main body part 11 and a lid part 12. Further, this article storage box 1 is configured such that when the lid part 12 is opened, the stored article M11 rises, and as parts for this configuration, it includes an article pressing - up part 13, a lifting - assisting part 14, a stopper part 15, and a traction sheet part 16.

[0013] The box body portion 11 is formed in a bottomed rectangular tubular shape, and its rectangular opening serves as an access opening 111 for the stored article M11. A peripheral edge 112 surrounding the access opening 111 is a square-shaped edge consisting of four linear edges 112a. The lid portion 12 is connected to the box body portion 11 with a folding line at a back-side edge 112b which is one of the four linear edges 112a, and is a portion that can open and close the access opening 111. Incidentally, hereinafter, the connection side of the lid portion 12 is referred to as the back side, and the opposite side is referred to as the front side. This point is the same in other embodiments described later.

[0014] The box body 11 is composed of a rectangular bottom wall 113, a pair of side walls 115 positioned at a pair of edges of the bottom wall 113, a rear wall 114 positioned at another pair of edges, a front wall 116, and a rectangular frame-shaped top wall 117. The internal space for storing articles in the box body 11 is partitioned by the bottom wall 113, the pair of side walls 115, the rear wall 114, and the front wall 116. The bottom wall 113 is a double wall in part, with two walls, an inner and an outer, overlapping. The pair of side walls 115, the rear wall 114, and the front wall 116 are all double walls with two walls, an inner and an outer, arranged with a gap between them. The edges of each of the double walls of the pair of side walls 115, the rear wall 114, and the front wall 116 that are opposite the bottom wall 113 are connected to the top wall 117, and the inner edge of this top wall 117 forms an entrance / exit opening 111. The inner walls 115a, 114a, and 116a of the pair of side walls 115, the rear wall 114, and the front wall 116 are walls that hang down from the entrance / exit opening 111 toward the bottom wall 113. Note that the inner wall 116a of the front wall 116 is hidden in Figures 1 to 3 and is shown as a part of the unfolded storage box 1-1 in Figure 7, which will be described later. The inner wall 113a of the bottom wall 113 is the part that extends toward the rear from the lower edge of the inner wall 116a of the front wall 116. In this box body 11, a closing lid slit 112d is formed in the front side edge 112c of the four straight edges 112a of the peripheral edge 112 to maintain the closed state when the lid 12 is closed. Furthermore, a closing tab 121a is formed on the front edge 121 of the lid portion 12, which is inserted into and locked into the closing slit 112d when the lid is closed. The lid wall 12 is a double wall in which two walls, an inner and an outer, are superimposed over substantially the entire front surface, and the closing tab 121a is a portion of the inner wall 12a of the lid wall 12 that is folded up on the front edge 121 side.

[0015] The item-pressing upper part 13 is the part that pushes up the stored item M11 when the lid part 12 is opened, causing the stored item M11 to rise out of the entry / exit opening 111. The push-up assist part 14 is the part that assists the push-up of the stored item M11 by the item-pressing upper part 13, and the stopper part 15 and the traction sheet part 16 are parts that promote the push-up of the stored item M11 by the item-pressing upper part 13.

[0016] Figure 4 is a schematic diagram showing a schematic partial cross-section along the line V11-V11 in Figure 1, illustrating how the contents of the storage box shown in Figures 1 to 3 are pushed up and rise out of the entry / exit opening when the lid is opened.

[0017] First, the item-pressing upper part 13 is installed inside the box body 11 and is a part of a sheet material (paper) that has been folded so that its cross-sectional shape along a plane perpendicular to the rear edge 112b is a mountain fold shape. When the box body 11 is filled with the contents M11 and the lid 12 is closed (S11), the item-pressing upper part 13 is folded and sandwiched between the bottom wall 113 of the box body 11 and the contents M11. When the lid 12 is opened, the item-pressing upper part 13 rises up towards the entry / exit opening 111 due to the restoring force against the fold, pushing up the contents M11. When the lid 12 is fully opened (S14), the contents M11, which has been pushed up by the item-pressing upper part 13, rises up from the entry / exit opening 111.

[0018] The push-up assist portion 14, which assists in the raising of the article-pressing portion 13, has the following configuration. Specifically, the push-up assist portion 14 is a portion of a sheet-like material (paper) that has been folded such that its cross-sectional shape along a plane perpendicular to the rear edge 112b forms at least one (one in this embodiment) mountain fold shape that, together with the article-pressing portion 13, constitutes an accordion fold shape. In the closed lid state (S11), this push-up assist portion 14 is folded and sandwiched between the bottom wall 113 and the article-pressing portion 13. When the lid 12 is opened, the restoring force against the fold causes it to rise up so as to become convex toward the entry / exit opening 111, assisting the raising of the article-pressing portion 13 from the rear side. In the open lid state (S14), it also plays a role in supporting the raised article-pressing portion 13 on its rear side.

[0019] Furthermore, the stopper portion 15 that promotes the raising of the article-pressing upper portion 13 is located in the following area. Specifically, when the lid portion 12 is opened, the stopper portion 15 restricts the following movement of the end portion 131a on the bottom wall 113 side of the article-side portion 131 located on the article-side portion M11 side of the article-pressing upper portion 13. The movement restricted by the stopper portion 15 is the movement of the end portion 131a of the article-side portion 131 in the separation direction D11 away from the inner wall 114a of the back wall 114 to which the lid portion 12 is connected. By restricting this movement in the separation direction D11, the article-pressing upper portion 13 has the force of the restoring force that would normally be spent on the movement in the separation direction D11 converted into a force that raises the article-pressing upper portion 13, and as a result, the raising of the article-pressing upper portion 13 is promoted.

[0020] In this embodiment, the stopper portion 15 is a tongue-shaped part that is folded up from the inner wall 113a of the bottom wall 113 of the box body portion 11, with the back wall 114 side being the free end. In the closed lid state (S11), the end 131a of the article-side portion 131 of the article-pressing upper portion 13 is separated from the connection portion 151 with the inner wall 113a of the bottom wall 113 of the stopper portion 15 toward the back wall 114. When the lid portion 12 is opened, the end 131a of the article-side portion 131 begins to move toward the separation direction D11 due to the restoring force of the article-pressing upper portion 13 and the push-up assist portion 14. At the beginning of opening the lid portion 12 (S12), the end 131a of the article-side portion 131 is still separated from the connection portion 151 of the stopper portion 15. Subsequently, when the lid portion 12 is opened to a certain extent (S13), the end portion 131a of the article-side portion 131 comes into contact with the connecting portion 151 of the stopper portion 15, restricting further movement in the separation direction D11. As a result, the article-side portion 131, that is, the article-pressing portion 13, is raised around the end portion 131a of the article-side portion 131, thereby promoting the raising of the article-pressing portion 13. This contact state of the end portion 131a of the article-side portion 131 with respect to the connecting portion 151 of the stopper portion 15 is maintained even in the open lid state (S14).

[0021] The towing sheet portion 16 is a sheet portion that connects both the first rear side portion 132 of the article pressing upper portion 13 and the second rear side portion 142 of the push-up assist portion 14 to the inner wall 12a of the lid portion 12. The first rear side portion 132 is the portion of the article pressing upper portion 13 that is located on the rear wall 114 side when the lid is open (S14). The second rear side portion 142 is the portion of the push-up assist portion 14 that is located on the rear wall 114 side when the lid is open (S14). The front side of the push-up assist portion 14 is the front wall portion 141 which is connected to the first rear side portion 132 of the article pressing upper portion 13. When the lid portion 12 is opened, the towing sheet portion 16 tows the first rear side portion 132 and the second rear side portion 142 in accordance with the movement of the lid portion 12. This towing action facilitates the raising of the article pushing portion 13 and the lifting assistance provided by the lifting assist portion 14, as the towing sheet portion 16 does.

[0022] The towing sheet portion 16 is connected to the end 132a of the first rear portion 132 on the bottom wall 113 side of the first rear portion 132 of the article pressing portion 13 so as to form a valley fold shape together with the first rear portion 132 of the article pressing portion 13. The towing sheet portion 16 is also connected to the inner wall 12a of the lid portion 12 via a lid-side fold 161. Furthermore, the towing sheet portion 16 has an intermediate fold 162 along the lid-side fold 161, between the end 132a of the first rear portion 132 and the lid-side fold 161. In the closed lid state (S11), the towing sheet portion 16 is folded in a valley fold shape at the intermediate fold 162 and is housed inside the box body portion 11. When the lid portion 12 is opened, the towing sheet portion 16 gradually opens and is extended into a flat plate shape in the open lid state (S14).

[0023] Furthermore, the push-up assist portion 14 is formed by cutting and raising the intermediate portion of the first rear side portion 132 of the article push-up portion 13 and the towing sheet portion 16 in the width direction D12 along the rear wall 114 so that it forms at least one (one in this embodiment) mountain fold shape.

[0024] Furthermore, in this embodiment, the following configuration is provided to guide the movement of the article pressing part 13 as shown in Figure 4.

[0025] Figure 5 is a schematic diagram showing a configuration for guiding the movement of the object pusher as shown in Figure 4.

[0026] In this embodiment, a pair of projections 133 are provided on the article-side portion 131 of the article-pressing upper part 13 for such guidance. The pair of projections 133 are portions that protrude in the width direction D12 from both ends of the end 131a on the bottom wall 113 side of the article-side portion 131. In addition, a pair of guide holes 118 are provided on the bottom wall 113 side of each inner wall 115a of a pair of side walls 115 that are arranged in the box body portion 11 with the article-side portion 131 sandwiched between them from the bottom wall 113. The pair of guide holes 118 allow the pair of projections 133 to enter one-to-one, suppressing the lifting of the pair of projections 133 away from the bottom wall 113 when the article-pressing upper part 13 rises, while guiding the movement of the pair of projections 133 in the separation direction D11. Each guide hole 118 has an oblique inner edge 118a that rises diagonally from its front side towards the back side, and an arc-shaped inner edge 118b that extends from its top in an arc toward the bottom wall 113 side. The guide hole 118 is guided by the projection 133 tracing the arc-shaped inner edge 118b. Figure 5 shows a projection 133 and a guide hole 118 into which this projection 133 enters, schematically illustrating the movement of the projection 133 from the closed state (S11) to the open state (S14) shown in Figure 4.

[0027] In the closed lid state (S11), the projection 133 is bent toward the bottom wall 113 along with the article-side portion 131, and is also retracted toward the rear in the separation direction D11. At the beginning of opening the lid portion 12 (S12), the projection 133 rises toward the front and engages with the arc-shaped inner edge 118b, thereby preventing it from lifting away from the bottom wall 113. When the lid portion 12 is opened to a certain extent (S13), the projection 133 moves toward the separation direction D11 while tracing the arc-shaped inner edge 118b. This movement is stopped by the stopper portion 15 restricting its movement. After that, the projection 133 rises without moving toward the separation direction D11 and reaches the open lid state (S14). This movement of the projection 133 inside the guide hole 118 guides the movement of the article-pushing portion 13, thereby pushing up the contained article M11.

[0028] The article storage box 1, which has such an article lifting function, is stored in the unfolded state shown below, and is folded up as appropriate when in use to form the article storage box 1.

[0029] Figure 6 is a plan view showing the unfolded storage box for constructing the item storage box shown in Figures 1 to 5, and Figure 7 is a plan view showing the unfolded storage box shown in Figure 6 with a portion of it turned inside out. Figure 8 is a plan view showing the unfolded sheet for forming the storage box unfolded box shown in Figures 6 and 7.

[0030] The storage box unfolding body 1-1 is an unfolding body for constituting the above-described article storage box 1, and comprises a main body unfolding part 11-1, a lid unfolding part 12-1, a push-up part unfolding part 13-1, an auxiliary part unfolding part 14-1, and a traction part unfolding part 16-1. The main body unfolding part 11-1 is the part for forming the box main body 11, and the lid unfolding part 12-1 is the part for forming the lid 12. The push-up part unfolding part 13-1 is the part for forming the article push-up part 13, the auxiliary part unfolding part 14-1 is the part for forming the push-up auxiliary part 14, and the traction part unfolding part 16-1 is the part for forming the traction sheet part 16. In this embodiment, the main unfolding body 1-1a is formed by connecting the lid unfolding body 12-1 to the main unfolding body 11-1, and the auxiliary unfolding body 1-1b is formed by connecting the pressing upper unfolding body 13-1, the auxiliary unfolding body 14-1, and the traction unfolding body 16-1 in a single sheet-like manner. The auxiliary unfolding body 1-1b is connected to the lid unfolding body 12-1 of the main unfolding body 1-1a so as to be reversible at the portion corresponding to the lid-side fold 161 of the traction sheet 16.

[0031] Furthermore, in the main body unfolding section 11-1 of the main unfolding body 1-1a, a tongue-shaped stopper section 15 is formed in the part that is hidden when the secondary unfolding body 1-1b is not turned inside out (the sheet portion that constitutes the inner wall surface 113a of the bottom wall 113). This stopper section 15 is formed to be foldable from the sheet portion that constitutes the inner wall 113a of the bottom wall 113. In addition, a pair of protrusions 133 are formed at both ends of the push-up unfolding section 13-1 of the secondary unfolding body 1-1b, and a pair of guide holes 118 are formed in the sheet portion that constitutes the inner wall 115a of the pair of side walls 115 in the main body unfolding section 11-1 of the main unfolding body 1-1a.

[0032] The unfolding sheet 1-2 for forming the unfolded storage box 1-1 comprises a secondary unfolding sheet portion 1-2b corresponding to the secondary unfolding sheet 1-1b and other main unfolding sheet portions 1-2a. The main unfolding sheet portion 1-2a is a strip-shaped connection of a lid sheet portion 12-2, which is folded in half to form the lid unfolding portion 12-1, and a main sheet portion 11-2, which is similarly folded in half to form the main body unfolding portion 11-1. The lid unfolding portion 12-1 is formed by folding the lid sheet portion 12-2 in half and gluing it together. The main body unfolding portion 11-1 is also formed by folding the main body sheet portion 11-2 in half and then folding back its end and gluing it together as an adhesive margin. The secondary unfolding sheet portion 1-2b is connected to the end of the lid sheet portion 12-2 opposite to the main sheet portion 11-2.

[0033] The article storage box 1 and storage box unfolding body 1-1 of the first embodiment described above can achieve the following effects. Specifically, according to this embodiment, when the lid 12 is opened, the upward movement of the article pressing part 13 is assisted by the pushing assist part 14 and promoted by the movement restriction of the stopper part 15, thereby ensuring a sufficient amount of extrusion of the stored article M11 when the lid 12 is opened. As a result, according to this embodiment, a sufficient upward movement can be obtained for thin stored articles M11, and even when heavy items are stored as articles M11, they can be effectively pushed up.

[0034] In this embodiment, the stopper portion 15 is a tongue-shaped part that contacts the end portion 131a of the article-side portion 131 on the article-pressing upper portion 13 to restrict its movement. With this configuration, the movement of the end portion 131a of the article-side portion 131 can be effectively restricted by contact with the stopper portion 15.

[0035] Furthermore, in this embodiment, a pair of projections 133 protruding in the width direction D12 are provided at the end 131a of the article-side portion 131. In addition, a pair of guide holes 118 are provided at each inner wall 115a of the pair of side walls 115 of the box body portion 11. With this configuration, the lifting of the pair of projections 133 provided at the end 131a of the article-side portion 131 of the article-pressing portion 13 can be suppressed by the pair of guide holes 118, thereby further promoting the uprighting of the article-pressing portion 13 when the lid portion 12 is opened.

[0036] Furthermore, in this embodiment, a traction sheet portion 16 is provided that connects both the first rear side portion 132 of the article pressing portion 13 and the second rear side portion 142 of the push-up assist portion 14 to the inner wall 12a of the lid portion 12. With this configuration, the traction of the traction sheet portion 16 promotes the raising of the article pressing portion 13 and the push-up assist portion 14. As a result, the amount the article pressing portion 13 rises when the lid portion 12 is opened, that is, the amount the contained article M11 is pushed out, can be increased. This makes it possible to obtain a more sufficient sense of upward movement for thin contained articles M11, and to push up even heavier items M11 more effectively.

[0037] Furthermore, in this embodiment, the towing sheet portion 16 is connected to the end portion 132a of the first rear portion 132 so as to form a valley fold shape together with the first rear portion 132. The push-up assist portion 14 is cut and bent so that the intermediate portion in the width direction D12 of the first rear portion 132 and the towing sheet portion 16 forms a mountain fold shape. With this configuration, a part of the valley fold shape of the towing sheet portion 16 and the first rear portion 132 of the article pushing portion 13 is utilized in the push-up assist portion 14, thereby simplifying the structure and reducing manufacturing costs.

[0038] Furthermore, in this embodiment, the box body 11 is equipped with a frame-shaped top wall 117 whose inner edge forms an entrance / exit opening 111. The pair of side walls 115, the back wall 114, and the front wall 116 are all double walls, with two walls, one inner and one outer, arranged with a gap between them, and are connected to the top wall 117. With this configuration, a frame can be provided on the opening side of the box body 11, resulting in excellent design. In addition, by providing an inner wall 115a on each of the pair of side walls 115, which is spaced apart from the outer wall, a good guide structure such as the guide hole 118 mentioned above can be provided.

[0039] This concludes the description of the first embodiment. Next, we will describe the second embodiment.

[0040] The second embodiment differs from the first embodiment in the configuration of the unfolded storage box. On the other hand, the article storage box formed from this unfolded storage box is the same as that of the first embodiment. In the following, the second embodiment will be described focusing on the differences from the first embodiment, and the article storage box, which is the same as that of the first embodiment, will not be illustrated or described.

[0041] Figure 9 is a plan view showing the unfolded storage box in the second embodiment, and Figure 10 is a plan view showing the unfolded sheet for forming the storage box shown in Figure 9. In Figures 9 and 10, components equivalent to those of the first embodiment shown in Figures 6 to 8 are given the same reference numerals as in Figures 6 to 8, but only those necessary for explanation are given, and redundant explanations of these equivalent components will be omitted below.

[0042] In this embodiment, the storage box unfolding body 2-1 includes a main unfolding body 2-1a having a main body unfolding section 11-1 and a lid unfolding section 22-1, similar to those in the first embodiment described above. Furthermore, this storage box unfolding body 2-1 includes a secondary unfolding body 2-1b having a push-up section 13-1, an auxiliary section unfolding section 14-1, and a traction section unfolding section 16-1. However, in this embodiment, unlike the first embodiment, the main unfolding body 2-1a and the secondary unfolding body 2-1b are formed separately, and the secondary unfolding body 2-1b is connected to the main unfolding body 2-1a when the contents are stored inside.

[0043] At the end of the towing section 16-1 of the secondary unfolding body 2-1b, a pair of connecting protrusions 27-1 are formed for connecting the secondary unfolding body 2-1b to the main unfolding body 2-1a. On the lid section 22-1 side of the boundary between the main body section 11-1 and the lid section 22-1 of the main unfolding body 2-1a, a pair of connecting locking holes 28-1 are formed, into which the pair of connecting protrusions 27-1 are inserted and locked one-to-one. In this embodiment, when stored, the main unfolding body 2-1a and the secondary unfolding body 2-1b are kept separate, and when in use, the secondary unfolding body 2-1b is connected to the main unfolding body 2-1a. After connection, the respective parts are folded up to form an article storage box similar to that of the first embodiment.

[0044] In this embodiment, the unfolding sheet 2-2 for obtaining such a storage box unfolding body 2-1 also consists of two sheets. That is, the unfolding sheet 2-2 in this embodiment consists of a main unfolding sheet portion 2-2a, in which the lid sheet portion 22-2 and the main sheet portion 11-2 are connected in a strip shape, and a secondary unfolding sheet portion 2-2b, which corresponds to the secondary unfolding body 2-1b, is a separate sheet. A pair of connecting protrusions 27-1 are formed on the secondary unfolding sheet portion 2-2b, and a pair of notched recesses 28-1a, which form a pair of connecting locking holes 28-1 when folded, are formed on the edge of the lid sheet portion 22-2 in the main unfolding sheet portion 2-2a. The main sheet portion 11-2 and the lid sheet portion 22-2 are each folded in half. Then, the lid unfolding portion 22-1 is formed by attaching the lid sheet portion 22-2, avoiding the area around the notched recesses 28-1a for insertion of the connecting protrusions 27-1. Furthermore, the main body sheet portion 11-2 is folded over at the edges and glued together to form the main body unfolded portion 11-1.

[0045] As with the first embodiment described above, the second embodiment also provides sufficient upward movement for thin storage items M11, and it goes without saying that it can effectively push up even heavy items when they are storage items M11.

[0046] Furthermore, in this embodiment, the main unfolding body 2-1a and the secondary unfolding body 2-1b are formed separately and connected when the article container is assembled. With this configuration, since the main unfolding body 2-1a and the secondary unfolding body 2-1b are formed separately, the maximum length of the unfolding body can be shortened, thereby reducing manufacturing costs.

[0047] This concludes the description of the second embodiment. Next, we will describe the third embodiment.

[0048] The third embodiment differs from the first embodiment in the configuration of the stopper portion and its surrounding area. Below, we will describe the third embodiment, focusing on the differences from the first embodiment.

[0049] Figure 11 is a perspective view of the article storage box of the third embodiment, showing it in an open state with the lid open. Figure 12 is an enlarged view of the stopper portion and its surrounding structure shown in Figure 11. In Figures 11 and 12, components equivalent to those of the first embodiment shown in Figures 1 to 5 are shown with the same reference numerals as in Figures 1 to 5, only those necessary for explanation. Therefore, redundant explanations of these equivalent components will be omitted below.

[0050] The article storage box 3 of this embodiment is equipped with a lid portion 12, a push-up assist portion 14, and a towing sheet portion 16, which are the same as those of the first embodiment. In contrast, the shape of each inner wall 315a of the pair of side walls 315 in the box body portion 31, and the shape of the article pushing portion 33 provided on the bottom wall 313 side of each inner wall 315a, with a pair of guide holes 318 and a pair of projections 333 that enter into these holes, differ from those of the first embodiment described above. The shape of the inner wall 315a of the side wall 315 differs from that of the first embodiment, where the shape of the inner wall 115a of the side wall 115 in the first embodiment included a curved line in part of its contour, whereas the entire contour of the inner wall 315a of the side wall 315 in the first embodiment is formed of straight lines. Similarly, the inner wall 313a of the bottom wall 313 in the first embodiment differs from that of the first embodiment, where the shape of the inner wall 113a of the bottom wall 113 in the first embodiment included a bent shape in part of its contour, as it is a simple strip shape extending to the back side. The inner wall 313a of this bottom wall 313 extends in a strip shape from the inner wall 316a of the front wall 316 (Figure 14).

[0051] Furthermore, in this embodiment, the end portion 331a of the article-side portion 331 of the article-pressing upper portion 33 on the bottom wall 313 side is a strip-shaped portion that is folded along an end fold 331b extending in the width direction D12 so as to face the inner wall 313a of the bottom wall 313. A pair of protrusions 333 protrude from both ends of this strip-shaped end portion 331a and enter one-to-one into a pair of guide holes 318 in the box body portion 31. These pair of guide holes 318 are each provided in the inner wall 315a of the side wall 315 and are narrow rectangular through-holes that extend along the separation direction D11 from the inner wall 314a of the back wall 314 of the box body portion 31.

[0052] When the lid 12 is opened and the article pressing part 33 pushes up the contained article M11, causing it to protrude from the entry / exit opening 111 of the upper wall 117, similar to the first embodiment, the pair of projections 333 slide inside the pair of narrow rectangular guide holes 318 in the separation direction D11. Since each projection 333 slides inside each of the narrow rectangular guide holes 318, the projections 333 do not lift up from the bottom wall 313. At this point, when the lid 12 is opened to a certain extent, each of the pair of projections 333 comes into contact with the inner edge on the front side in the separation direction D11 of each of the pair of guide holes 318. In this embodiment, the inner edge of each guide hole 318 contacts each projection 333, thereby restricting the movement of the end portion 331a on the bottom wall 313 side of the article-side portion 331 of the article pressing part 333 and constituting a stopper portion 35.

[0053] Figure 13 is a plan view showing the unfolded storage box for constructing the article storage box shown in Figures 11 and 12, and Figure 14 is a plan view showing the unfolded storage box shown in Figure 13 with a portion of it turned inside out. Figure 15 is a plan view showing the unfolded sheet for forming the unfolded storage box shown in Figures 13 and 14. In Figures 13 to 15, components equivalent to those of the first embodiment shown in Figures 6 to 8 are given the same reference numerals as in Figures 6 to 8, but only those necessary for explanation are given, and redundant explanations of these equivalent components are omitted below.

[0054] The storage box unfolding body 3-1 in this embodiment includes a lid unfolding section 12-1, an auxiliary unfolding section 14-1, and a traction section unfolding section 16-1, which are the same as those in the first embodiment. In the main body unfolding section 31-1, where the shape of a part of the box body 31 to be formed differs from that of the first embodiment as described above, guide hole slits 318-1 are formed in the sheet portion that constitutes the inner wall 315a of each side wall 315. The guide hole slits 318-1 are slit portions in which a narrow rectangular guide hole 318 is formed when the sheet portion that constitutes the inner wall 315a is folded. Furthermore, in the pressing section unfolding section 33-1 for forming the article pressing section 33 described above, a strip-shaped end portion 331a is formed on the sheet portion 331-1 that constitutes the article side portion 331, with protruding pieces 333 projecting from both ends. The front end portion of the guide hole slits 318-1 constitutes a stopper portion 35.

[0055] The main unfolding section 31-1 is connected to the lid unfolding section 12-1 to form the main unfolding body 3-1a, and the push-up section unfolding section 33-1, the auxiliary section unfolding section 14-1, and the traction section unfolding section 16-1 are connected in a single sheet-like manner to form the auxiliary unfolding body 3-1b. The auxiliary unfolding body 3-1b is connected to the lid unfolding section 12-1 of the main unfolding body 3-1a so as to be reversible.

[0056] The unfolding sheet 3-2 for forming such a storage box unfolding body 3-1 is a single sheet comprising a secondary unfolding sheet portion 3-2b corresponding to the secondary unfolding body 3-1b and the other main unfolding sheet portion 3-2a.

[0057] As with the first embodiment described above, the third embodiment also provides sufficient upward movement for thin storage items M11, and it goes without saying that it can effectively push up even heavy items when they are storage items M11.

[0058] Furthermore, in this embodiment, the inner edge on the front side in the separation direction D11 of each of the pair of guide holes 318 constitutes a stopper portion 35 that contacts each of the pair of projections 333 to restrict movement. With this configuration, since a part of each of the pair of guide holes 318 constitutes the stopper portion 35, the structure can be simplified and manufacturing costs can be reduced.

[0059] This concludes the description of the third embodiment. Next, we will describe the fourth embodiment.

[0060] The fourth embodiment differs from the first embodiment in the configuration of the article pushing section and the pushing assist section. Below, the fourth embodiment will be described, focusing on the differences from the first embodiment.

[0061] Figure 16 is a perspective view of the article storage box of the fourth embodiment, shown in an open state with the lid open. Note that, in this fourth embodiment, the shape and other characteristics of each component differ from those of the first embodiment; therefore, in Figure 16, and in Figures 17 and 18 described later, all reference numerals are used to describe the fourth embodiment. However, the articles to be stored and the arrows indicating direction are the same as in the first embodiment, and therefore the same reference numerals are used.

[0062] The article storage box 4 of this embodiment includes a bottomed rectangular cylindrical box body 41 and lid 42 which are substantially the same as the box body 11 and lid 12 of the first embodiment. However, in this embodiment, the article pressing part 43 and the pushing-up assist part 44 are formed by utilizing the missing portion when the entry / exit opening 411 of the top wall 417 of the box body 41 is opened. The article pressing part 43 and the pushing-up assist part 44 are formed when this missing portion is folded in a two-fold accordion shape toward the inner wall 414a side of the back wall 414. When the lid is closed, these accordion-shaped article pressing part 43 and the pushing-up assist part 44 are sandwiched and folded between the stored article M11 and the bottom wall 413. When the lid 42 is opened, the article pressing part 43 and the pushing-up assist part 44 rise up due to the restoring force, pushing up the stored article M11 and causing it to protrude from the entry / exit opening 411. Furthermore, in this embodiment, due to the adoption of this configuration, there is no configuration corresponding to the traction sheet portion 16 in the first embodiment, and the opening of the lid portion 42 itself does not promote the raising of the article pressing portion 43 or the lifting assist portion 44. In addition, the bottom wall 413a is only overlapped with a part of the inner wall 414a side of the rear wall 414, and the majority is a single wall structure consisting only of the outer wall.

[0063] Furthermore, in this embodiment, the inner walls 415a of the pair of side walls 415 in the box body portion 41 are provided with guide holes 418 having the same shape as in the first embodiment. In addition, a pair of projections 433 for restricting movement are formed at both ends in the width direction D12 of the end portion 431a on the bottom wall 413 side of the article-side portion 431 of the article-pressing upper portion 43. The inner edge on the front side in the separation direction D11 of each guide hole 418 constitutes a stopper portion 45 that restricts movement by contacting each projection 433.

[0064] Figure 17 is a plan view showing the unfolded storage box for constructing the storage box shown in Figure 16, and Figure 18 is a plan view showing the unfolded sheet for forming the storage box unfolded shown in Figure 17.

[0065] In this embodiment, the unfolded storage box 4-1 is provided with a push-up unfolding section 43-1 and an auxiliary unfolding section 44-1 that fit inside the portion 411-1 that constitutes the entry / exit opening 411 of the upper wall 417 in the main body unfolding section 41-1 that forms the box body 41. The lid unfolding section 42-1 is connected to the main body unfolding section 41-1, which is the same as in the first embodiment. However, the push-up unfolding section 43-1 and the auxiliary unfolding section 44-1 are not connected to the lid unfolding section 42-1, but are connected to the sheet portion that constitutes the inner wall 414a of the rear wall 414 and the inner wall 413a of the bottom wall 413 in the main body unfolding section 41-1. For this reason, unlike in the first embodiment, the inner wall 413a of the bottom wall 413 is not connected to the inner wall 416a of the front wall 416. The main unfolding section 41-1 and the lid unfolding section 42-1, which include the sheet portion that constitutes the inner wall 414a of the rear wall 414, constitute the main unfolding body 4-1a, while the push-up unfolding section 43-1, the auxiliary unfolding section 44-1, and the sheet portion that constitutes the inner wall 413a of the bottom wall 413 constitute the secondary unfolding body 4-1b. The secondary unfolding body 4-1b is the missing section of part 411-1 that constitutes the entry / exit opening 411 in the upper wall 417 of the main unfolding body 4-1a.

[0066] Furthermore, since the push-up unfolding section 43-1 is formed by separating it from the sheet portion that constitutes the inner wall 415a of the pair of side walls 415 in the main unfolding body 4-1a, the width dimension D12 of the surrounding portion of the auxiliary unfolding section 44-1 is narrower. The sheet portion that constitutes the article-side portion 431 of the push-up unfolding section 43-1 has a trapezoidal shape that widens from this narrow portion, and a pair of protrusions 433 are provided at both ends of its end portion 431a. In addition, a pair of guide holes 418 are formed in the sheet portion that is separated from the push-up unfolding section 43-1 and constitutes the inner wall 415a of the pair of side walls 415, and each front side edge constitutes a stopper portion 45.

[0067] The unfolding sheet 4-2 for forming such a storage box unfolding body 4-1 is a single sheet comprising a secondary unfolding sheet portion 4-2b corresponding to the secondary unfolding body 4-1b and the other main unfolding sheet portion 4-2a. The secondary unfolding sheet portion 4-2b is the missing portion of the main unfolding sheet portion 4-2a.

[0068] As with the first embodiment described above, the fourth embodiment also provides sufficient upward movement for thin storage items M11, and it goes without saying that it can effectively push up even heavy items when they are storage items M11.

[0069] Furthermore, the first to fourth embodiments described above are merely representative examples, and the article storage box and the storage box deployment are not limited to these embodiments. That is, those skilled in the art can implement them in various modifications according to conventionally known knowledge.

[0070] For example, in the first to fourth embodiments described above, paper article storage boxes 1, ..., 4 and article storage boxes 1-1, ..., 4-1 are exemplified as examples of article storage boxes and unfolded storage boxes. However, article storage boxes and unfolded storage boxes are not limited to these, and may be made of, for example, a thin, foldable plastic sheet or a wooden sheet, and the specific material is not limited.

[0071] Furthermore, in the first to fourth embodiments described above, examples of article storage boxes and unfolded storage boxes are provided, such as article storage boxes 1, ..., 4 and unfolded storage boxes 1-1, ..., 4-1, which are provided with a bottomed rectangular cylindrical box body 11, 41 and a rectangular plate-shaped lid 12, 42. However, the article storage boxes and unfolded storage boxes are not limited to these, and as long as at least a part of the peripheral edge of the box body is a straight edge, and the lid is connected to the box body in an openable and closable manner using the straight edge as a fold, the specific box shape is not limited.

[0072] Furthermore, in the first to fourth embodiments described above, examples of article storage boxes and unfolded storage boxes are provided, such as article storage boxes 1,...,4 and unfolded storage boxes 1-1,...,4-1, in which only one push-up assist portion 14,44 is provided in the center in the width direction D12. However, article storage boxes and unfolded storage boxes are not limited to these. Multiple push-up assist portions may be provided, as long as the sheet material is folded so that its cross-sectional shape, together with the article-pushing portion, forms at least one mountain fold shape that constitutes an accordion fold shape. Also, the formation position of the push-up assist portion may be any position other than the center.

[0073] Furthermore, in the first and second embodiments described above, a tongue-shaped stopper portion 15 folded up from the inner wall 113a of the bottom wall 113 is exemplified as an example of a stopper portion. Furthermore, in the third and fourth embodiments, a stopper portion 35, 45 is exemplified as an example of a stopper portion, which is formed by the inner edges that a pair of projections 333, 433 abut against in a pair of guide holes 318, 418. However, the stopper portion is not limited to these, and any specific form is acceptable as long as it can restrict the movement of the end of the article-side portion of the article-pressing part. However, as mentioned above, the tongue-shaped stopper portion 15 can effectively restrict movement, and the stopper portions 35, 45 formed by the inner edges of the guide holes 318, 418 can simplify the structure and reduce manufacturing costs. Furthermore, multiple types of stopper portions may be provided; for example, two types of stopper portions may be provided: a tongue-shaped stopper portion and a stopper portion formed by the inner edges of the guide holes.

[0074] Furthermore, in the first to fourth embodiments described above, an example of an article storage box is provided, which is an article storage box 1, ..., 4, provided with a pair of protrusions 133, ..., 433 and a pair of guide holes 118, ..., 418. Also, in the first to fourth embodiments, an example of an article storage box unfolding body is provided, which is an article storage box unfolding body 1-1, ..., 4-1 for constructing these article storage boxes 1, ..., 4. However, the article storage boxes and unfolding bodies are not limited to these, and it is also possible not to provide any guide structure at the bottom wall end of the article-side portion of the article-pressing part. However, as mentioned above, providing a guide structure with a pair of protrusions 133, ..., 433 and a pair of guide holes 118, ..., 418 can further promote the rising of the article-pressing part 13, ..., 43 when the lids 12, 42 are opened. The same applies to the effect when the lid (not shown), which is composed of the lid deployment section 22-1 in the second embodiment, is opened.

[0075] Furthermore, in the first to third embodiments described above, examples of article storage boxes and storage box unfolders are provided, such as article storage boxes 1 and 3 and storage box unfolders 1-1, ..., 3-1, which are provided with a towing sheet portion 16. However, the article storage boxes and storage box unfolders are not limited to these, and it is also possible to omit any towing sheet portion, for example, as exemplified in the fourth embodiment as article storage box 4 and storage box unfolder 4-1. However, as mentioned above, providing the towing sheet portion 16 can increase the amount of extrusion of the stored article M11. The same applies to the storage box unfolder 2-1 of the second embodiment and the article storage box (not shown) composed of the storage box unfolder 2-1.

[0076] Furthermore, in the first to third embodiments described above, an example of a push-up assist part is shown as a push-up assist part 14 cut and bent from the article pressing parts 13, 33 and the traction sheet part 16. In the fourth embodiment, an example of a push-up assist part is shown as a push-up assist part 44 cut and bent from the article pressing part 43 and other sheet parts. However, the push-up assist part is not limited to these, and may be formed separately from the article pressing parts, etc., in a mountain-fold shape and attached as appropriate. However, as mentioned above, the cut and bent shape of the push-up assist parts 14, 44 simplifies the structure and reduces manufacturing costs.

[0077] Furthermore, in the first to fourth embodiments described above, an example of a box body is shown, which includes a frame-shaped top wall 117,...,417 with an inner edge that serves as an entrance / exit opening 111,411. In this box body 11,...,41, each of the pair of side walls 115,...,415, the rear wall 114,...,414, and the front wall 116,...,416 is a double wall in which two inner and outer walls are arranged with a gap between them, and is connected to the top wall 117. However, the box body is not limited to this, and it is not necessary to provide a frame-shaped top wall. For example, the pair of side walls, the rear wall, and some or all of the front wall may be a double wall structure in which two inner and outer walls are superimposed without a gap, or a single wall structure consisting only of an outer wall without an inner wall. However, as mentioned above, by providing a frame-like top wall, excellent design can be obtained, and by providing double-walled side walls 115,...,415, a good guide structure can be provided for the inner walls 115a,...,415a. [Explanation of Symbols]

[0078] 1,3,4 Item storage boxes 1-1, 2-1, 3-1, 4-1 Deployed storage box 1-1a, 2-1a, 3-1a, 4-1a Main Expansion 1-1b, 2-1b, 3-1b, 4-1b derivative expansion 1-2, 2-2, 3-2, 4-2 Expansion Sheet 1-2a,2-2a,3-2a,4-2a Main unfolded sheet part 1-2b, 2-2b, 3-2b, 4-2b Detachable sheet portion 11, 31, 44 Box body 11-1, 31-1, 41-1 Main body unfolding section 11-2 Main seat section 12,42 Lid 12a,113a,114a,115a,116a,313a,314a,315a,316a,413a,414a,415a,416a Inner wall 12-1,22-1,42-1 Lid expansion part 12-2, 22-2 Lid sheet portion 13,33,43 Article push part 13-1,43-1 Push-up development part 14,44 Push-up assist section 14-1,44-1 Auxiliary part development part 15, 35, 45 Stopper section 16. Towing Seat Section 16-1 Traction section deployment section 27-1 Connecting projection 28-1 Connecting locking hole 28-1a Notched recess 111,411 entrance / exit openings 112 Peripheral edge 112a straight edge 112b Back edge 112c Front edge 112d Closing slit 113,313,413 Bottom wall 114,314,414 Back wall 115,315,415 side wall 116,316,416 Front wall 117,417 Top wall 118,318,418 guide holes 118a Oblique inner edge 118b Arc-shaped inner margin 121 Front side edge 121a Closing tongue piece 131,331,431 Article side part 131a,132a,331a,431a End 132 1st back side part 133,333,433 protrusion 141 Front wall section 142 2nd back side part 151 Connecting part 161 Fold on the lid side 162 Middle fold 318-1 Guide hole slit 331b Edge fold 331-1 Seat section 411-1 Parts that constitute the entrance / exit opening in the upper wall D11 Separation direction D12 Width direction M11 Contents S11 Closed state S12 The beginning of the lid opening S13 The stage when the lid is opened to a certain extent. S14 Open state

Claims

1. A box body formed in the shape of a bottomed cylinder, with its opening serving as an opening for the entry and exit of stored items, and at least a portion of the peripheral edge surrounding the entry and exit opening being a straight edge, The aforementioned straight edge is folded along the fold line and connected to the box body, and the lid portion covers the entrance / exit opening in a way that allows it to be opened and closed, This is a portion installed inside the box body, where a sheet-like material is folded such that its cross-sectional shape along a plane perpendicular to the straight edge is a mountain fold shape. When the contents are placed in the box body and the lid is closed, it is folded and sandwiched between the bottom wall of the box body and the contents. When the lid is opened, the restoring force against the fold causes it to rise up so as to protrude toward the entry / exit opening, forming an item-pressing portion that pushes up the contents. The sheet material is folded such that its cross-sectional shape, together with the article pressing portion, forms a bellows-fold shape with at least one mountain-fold shape, and in the closed lid state, it is folded and sandwiched between the bottom wall and the article pressing portion, and when the lid is opened, the restoring force against the fold causes it to rise up so as to become convex toward the entry / exit opening, thereby assisting the raising of the article pressing portion. When the lid is opened, a stopper portion is provided to promote the upward movement of the article pressing portion by restricting the movement of the end portion on the bottom wall side of the article pressing portion located on the article side on the article side away from the back wall to which the lid is connected. A box for storing articles, characterized by having the following features.

2. The aforementioned bottom wall is a double wall in which at least a portion of it consists of two overlapping inner and outer walls. The article storage box according to claim 1, characterized in that the stopper portion is a tongue-shaped part folded up from the inner wall of the bottom wall with the back wall side as the free end, and the end on the bottom wall side of the article side abuts against the connecting portion with the inner wall of the bottom wall to restrict movement.

3. The bottom wall side end of the article-side portion is provided with a pair of projections that protrude in the width direction from both ends in the width direction along the back wall, In the box body, each of the pair of side walls that partition the internal space together with the bottom wall and sandwich the item-side portion between them is a double wall in which two inner and outer walls are arranged with a gap between them. The article storage box according to claim 1, characterized in that the bottom wall side of each inner wall of the pair of side walls is provided with a pair of guide holes into which the pair of projections enter one-to-one, and which guide the movement of the pair of projections while suppressing the lifting of the pair of projections from the bottom wall when the article pressing part rises.

4. The article storage box according to claim 3, characterized in that the inner edge on the forward side in the separation direction of each of the pair of guide holes constitutes the stopper portion by abutting each of the pair of projections when the lid is opened, thereby restricting the movement of the bottom wall side end of the article side portion.

5. The aforementioned lid has a double wall structure in which at least a portion of it consists of two overlapping inner and outer walls. The article storage box according to claim 1, further comprising a traction sheet portion connecting both a first rear side portion located on the rear wall side in the open state of the article pressing portion when the lid is opened, and a second rear side portion located on the rear wall side in the open state of the push-up assist portion, to the inner wall of the lid, wherein when the lid is opened, the traction sheet portion pulls the first rear side portion and the second rear side portion in accordance with the movement of the lid, thereby promoting the uprighting of the article pressing portion and the push-up assist portion.

6. The towing sheet portion is connected to the bottom wall end of the first rear portion so as to form a valley-fold shape together with the first rear portion. The article storage box according to claim 5, characterized in that the push-up assist portion is cut and raised such that at least one mountain fold shape is formed in the intermediate portion in the width direction along the rear wall of the first rear side portion and the traction sheet portion.

7. A deployable body for constructing an article storage box according to any one of claims 1 to 6, A main body unfolding section for forming the box body, A lid unfolding section for forming the lid, A pressing portion for forming the article pressing portion, It comprises an auxiliary part development section for forming the aforementioned push-up assist section, A storage box unfolding body characterized in that the stopper portion is formed in the unfolding portion of the main body.

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