Cardboard support material and blank sheet for cardboard support material

Abstract

To provide a corrugated cardboard support material with excellent pressure resistance while suppressing an increase in the amount of material used. [Solution] A rectangular base plate having a pair of first edges and a pair of second edges; a first side wall connected to one of the first edges; a second side wall connected to the other of the first edges; a pair of first vertical grain plates connected to both ends of the first side wall; a pair of second vertical grain plates connected to both ends of the second side wall; a first horizontal grain plate connected to one of the second edges; a second horizontal grain plate connected to the other of the second edges; a first connecting portion connected to the upper part of the first horizontal grain plate; and a groove connected to the first connecting portion at its base. The structure comprises a cross section, with one of the first vertical boards, one of the second vertical boards, and the first horizontal board overlapping each other such that the first horizontal board faces outward, and the other of the first vertical boards, the other of the second vertical boards, and the second horizontal board overlapping each other such that the second horizontal board faces outward, with one of the first vertical boards and one of the second vertical boards sandwiched between the first horizontal board and the base of the cross section, and the cross section extending toward the other side of the second edge.

Description

Technical Field

[0001] The present disclosure relates to a cardboard receiving member.

Background Art

[0002] Conventionally, cardboard receiving members may be used. The receiving member supports an article placed on its upper part. For example, Patent Document 1 discloses a packaging buffer composed of a cardboard laminate having an article receiving portion. Also, for example, Patent Document 2 discloses a cardboard receiving base including a bottom box having a support member for supporting an article placed thereon when accommodating an article, and a reinforcing piece for reinforcing the support member.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the technique described in Patent Document 1, there is a problem that the amount of material increases because cardboard is laminated. Also, in the technique described in Patent Document 2, it is difficult to support when the article to be placed is a heavy object, and there is a problem of inferior pressure resistance. For this reason, there has been a demand for a cardboard receiving member that suppresses an increase in the amount of material and has excellent pressure resistance.

Means for Solving the Problems

[0005] The present disclosure can be realized in the following forms.

[0006] (1) According to one embodiment of the present invention, a corrugated cardboard support material is provided. This corrugated cardboard support material comprises: a rectangular base plate having a pair of first edges that are substantially parallel to each other and a pair of second edges that are substantially perpendicular to the first edges and substantially parallel to each other; a first side wall connected to one of the first edges and raised substantially perpendicular to the base plate; a second side wall connected to the other of the first edges and raised substantially perpendicular to the base plate; a pair of first vertical panels connected to both ends of the first side wall, raised substantially perpendicular to the base plate and substantially perpendicular to the first side wall, with a recessed upper part; a pair of second vertical panels connected to both ends of the second side wall, raised substantially perpendicular to the base plate and substantially perpendicular to the second side wall, with a recessed upper part; and a panel connected to one of the second edges, raised substantially perpendicular to the base plate and with a recessed upper part The corrugated cardboard support material comprises a first horizontal board formed in a recess, a second horizontal board connected to the other side of the second edge and rising substantially perpendicular to the bottom board, with its upper part formed in a recess, a first connecting portion connected to the upper part of the first horizontal board, and a bracing portion connected to the first connecting portion at its base, wherein one of the first vertical boards, one of the second vertical boards, and the first horizontal board are overlapped with each other with the first horizontal board facing outwards, the other of the first vertical boards, the other of the second vertical boards, and the second horizontal board are overlapped with each other with the second horizontal board facing outwards, one of the first vertical boards and one of the second vertical boards are sandwiched between the first horizontal board and the base of the bracing portion, and the bracing portion extends toward the other side of the second edge. This form of corrugated cardboard support material has excellent compressive strength while suppressing an increase in the amount of material required.

[0007] (2) The corrugated cardboard support material described in (1) above further comprises a second connecting portion connected to the upper part of the second horizontal board and a lid portion connected to the second connecting portion at its base, wherein the other half of the first vertical board and the other half of the second vertical board are sandwiched between the second horizontal board and the base of the lid portion, and the lid portion may extend to one of the first vertical boards. This form of corrugated cardboard support material provides even greater pressure resistance.

[0008] (3) The corrugated cardboard support material described in (2) above is further provided with a pair of insertion parts connected to the lid on the side opposite to the second horizontal board, and the pair of insertion parts may be bent toward the bottom board and overlapped on the inside of one of the first vertical boards. This form of corrugated cardboard support material has even better pressure resistance.

[0009] (4) In the corrugated cardboard support material described in any one of the above items (1) to (3), a pair of first protrusions are formed at both ends of the first horizontal board, and a pair of second protrusions are formed at both ends of the second horizontal board, the pair of first protrusions are inserted into a pair of first holes formed through one of the first vertical boards and one of the second vertical boards, and the pair of second protrusions are inserted into a pair of second holes formed through the other of the first vertical board and the other of the second vertical board. This form of corrugated cardboard support material has even better pressure resistance.

[0010] (5) According to another embodiment of the present disclosure, a blank sheet for a corrugated cardboard support is provided. The blank sheet for the corrugated cardboard support comprises a rectangular base plate having a pair of first edges substantially parallel to each other and a pair of second edges substantially perpendicular to the first edges and substantially parallel to each other, a first side wall connected to one of the first edges, a second side wall connected to the other of the first edges, a pair of first vertical plates connected to both ends of the first side walls and substantially perpendicular to the base plate and the first side walls in the assembled state, and a pair of second vertical plates connected to both ends of the second side walls and in the assembled state the base plate and the The corrugated cardboard support material comprises a pair of second vertical plates substantially perpendicular to the second side wall, a first horizontal plate connected to one of the second edges with a first recess formed on the opposite edge and substantially perpendicular to the bottom plate in the assembled state, a second horizontal plate connected to the other of the second edges with a second recess formed on the opposite edge and substantially perpendicular to the bottom plate in the assembled state, and a bracing portion connected to the first recess via a first connecting portion and extending toward the other of the second edges in the assembled state. This form of corrugated cardboard support material blank sheet makes it possible to provide a corrugated cardboard support material with excellent compressive strength while suppressing an increase in the amount of material.

[0011] (6) In the blank sheet of the corrugated cardboard support material described in (5) above, a lid portion may be further provided which is connected to the second recess portion via a second connecting portion and extends to the first vertical board in the assembled state. According to this form of the blank sheet of the corrugated cardboard support material, a corrugated cardboard support material with even greater pressure resistance can be provided.

[0012] (7) In the blank sheet of the corrugated cardboard support material described in (6) above, a pair of insertion parts connected to the lid portion are provided on the side opposite to the second horizontal board, and the pair of insertion parts may be folded toward the bottom plate side in the assembled state and overlapped on the inside of one of the first vertical boards. According to this form of blank sheet of corrugated cardboard support material, a corrugated cardboard support material with even greater pressure resistance can be provided.

[0013] (8) In the corrugated cardboard support material described in any one of the above items (5) to (7), a pair of first projections are formed at both ends of the first horizontal plate, a first insertion hole adjacent to the first side wall and a first groove located on the opposite side of the first insertion hole are formed on one side of the first vertical plate, a second insertion hole adjacent to the second side wall and a second groove located on the opposite side of the second insertion hole are formed on one side of the second vertical plate, a pair of second projections are formed at both ends of the second horizontal plate, and the other side of the first vertical plate is adjacent to the first side wall A third insertion hole and a third groove located on the opposite side of the third insertion hole are formed on the other side of the second vertical plate, and a fourth insertion hole adjacent to the second side wall and a fourth groove located on the opposite side of the fourth insertion hole are formed on the other side of the second vertical plate, and in the assembled state, the pair of first protrusions may be inserted into the pair of first holes formed by the first insertion hole and the second groove, and the pair of second protrusions may be inserted into the pair of second holes formed by the third insertion hole and the fourth groove, and the pair of second holes formed by the fourth insertion hole and the third groove. According to the blank sheet of the corrugated cardboard support material in this form, a corrugated cardboard support material with even greater pressure resistance can be provided.

[0014] Note that the present disclosure can be implemented in various forms, for example, in the form of a method for manufacturing a corrugated cardboard receiving member, a packaging material including a corrugated cardboard receiving member, and the like.

Brief Description of the Drawings

[0015] [Figure 1] It is a perspective view showing a schematic configuration of a corrugated cardboard receiving member. [Figure 2] It is a plan view showing a schematic configuration of a blank sheet. [Figure 3] It is an explanatory view showing an example of the state of assembly of the receiving member. [Figure 4] It is an explanatory view showing an example of the state of assembly of the receiving member. [Figure 5] It is an explanatory view showing an example of the state of assembly of the receiving member. [Figure 6] It is an explanatory view showing an example of the state of assembly of the receiving member. [Figure 7] It is an explanatory view showing an example of the state of assembly of the receiving member. [Figure 8] It is an explanatory view showing an example of the state of assembly of the receiving member. [Figure 9] It is an explanatory view showing an example of the state of assembly of the receiving member. [Figure 10] It is an explanatory view showing an example of the state of assembly of the receiving member. [Figure 11] It is an explanatory view showing an example of the state of assembly of the receiving member. [[ID=4l]] [Figure 12] It is an explanatory view showing an example of the state of assembly of the receiving member. [Figure 13] It is a perspective view showing a schematic configuration of a corrugated cardboard receiving member of a comparative example. [Figure 14] It is a plan view showing a schematic configuration of a blank sheet before assembly. [Figure 15] It is a perspective view showing a schematic configuration of a receiving member of Modification 1. [Figure 16] It is a plan view showing a schematic configuration of a blank sheet before assembly. [Figure 17]This is a perspective view showing the schematic configuration of the support member in modified example 2. [Figure 18] This is a plan view showing the general configuration of the blank sheet before assembly. [Modes for carrying out the invention]

[0016] A. First Embodiment: <Structure> Figure 1 is a perspective view showing the schematic configuration of a corrugated cardboard support material 100 as one embodiment of the present disclosure. Figure 2 is a plan view showing the schematic configuration of a blank sheet 10. The corrugated cardboard support material 100 shown in Figure 1 (hereinafter also simply referred to as "support material 100") has a roughly box-like external shape with a hollow inside. The support material 100 has a recessed top and supports an article (not shown) placed on top. The support material 100 is assembled by folding a single blank sheet 10 shown in Figure 2. The blank sheet 10 is made of corrugated cardboard. "Corrugated cardboard" in the present disclosure includes corrugated plastic.

[0017] As shown in Figure 2, the blank sheet 10 has a roughly rectangular shape in plan view when viewed macroscopically. The blank sheet 10 comprises a bottom plate 20, a first side wall 31, a second side wall 32, a pair of first vertical plates 40, a pair of second vertical plates 50, a first horizontal plate 60, a first connecting portion 65, a diagonal brace portion 80, a second horizontal plate 70, a second connecting portion 75, a lid portion 90, and a pair of insertion portions 95. In Figure 2, the fold lines that are folded during assembly are shown as dashed lines. In this disclosure, "fold lines" mean lines that do not penetrate the thickness of the blank sheet 10 and are composed of scribe lines or lead scribe lines. A scribe line is a fold line created by flattening a step at the target position so that the blank sheet 10 can be folded neatly when assembled into a three-dimensional shape. A lead scribe line is created by alternately making grooves and cuts to make it easier to fold. The dimensions and thickness of the blank sheet 10 are set appropriately according to the size, weight, shape, etc., of the item to be placed on it.

[0018] The base plate 20 constitutes the bottom of the support member 100 in the assembled state. The base plate 20 has an external shape that is approximately rectangular in plan view. The base plate 20 has a pair of first edges 21 that are approximately parallel to each other, and a pair of second edges 22 that are approximately perpendicular to the first edges 21 and are approximately parallel to each other. In this disclosure, "approximately parallel" includes not only the case where two opposing line segments are strictly parallel, but also the case where one of the opposing line segments is inclined with respect to the other within a range of approximately ±5°, preferably within a range of approximately ±3°. Furthermore, in this disclosure, "approximately perpendicular" includes not only the case where they intersect at 90°, but also the case where they intersect at an angle within a range of approximately 85° to 95°, preferably within a range of approximately 88° to 92°.

[0019] In this embodiment, the pair of first edges 21 are aligned with the longitudinal grain of the corrugated cardboard, and the pair of second edges 22 are aligned with the transverse grain. In this embodiment, the length of the pair of first edges 21 is shorter than the length of the pair of second edges 22. Therefore, the shorter side of the rectangular base plate 20 is aligned with the longitudinal grain, and the longer side is aligned with the transverse grain. In the following description, the side of the pair of first edges 21 located on the left side of the paper will also be referred to as "one of the first edges 21 25," and the side of the pair of first edges 21 located on the right side of the paper will also be referred to as "the other of the first edges 21 26." In addition, the side of the pair of second edges 22 located on the lower side of the paper will also be referred to as "one of the second edges 22 27," and the side of the pair of second edges 22 located on the upper side of the paper will also be referred to as "the other of the second edges 22 28." In this embodiment, a through hole 23 is formed approximately in the center of one of the second edges 22 27, along the second edge 22. The size of the through-hole 23 is set to be slightly larger than the dimensions into which the protrusions 47 and 57, described later, both fit, i.e., the dimensions of the protrusions 47 and 57. In this embodiment, a through-hole 24 is formed along the second edge 22 approximately in the center of the other side 28 of the second edge 22. The size of the through-hole 24 is set to be slightly larger than the dimensions into which the protrusions 48 and 58, described later, both fit, i.e., the dimensions of the protrusions 48 and 58.

[0020] The first side wall 31 is connected to one side 25 of the first edge 21. The first side wall 31 has a roughly rectangular external shape. In the assembled state, the first side wall 31 is raised so as to be roughly perpendicular to the base plate 20. The second side wall 32 is connected to the other side 26 of the first edge 21. The second side wall 32 has a roughly rectangular external shape. In the assembled state, the second side wall 32 is raised so as to be roughly perpendicular to the base plate 20.

[0021] A pair of first vertical panels 40 are connected to both ends of the first side wall 31. The pair of first vertical panels 40 function as support plates. As shown in Figure 1, in the assembled state, the pair of first vertical panels 40 are raised so as to be approximately perpendicular to the bottom plate 20 and approximately perpendicular to the first side wall 31. The upper part of the pair of first vertical panels 40 in the assembled state is formed with a recess. In the following description, as shown in Figure 2, the one of the pair of first vertical panels 40 located on the lower side of the paper will also be called "one of the first vertical panels 40 41", and the one of the pair of first vertical panels 40 located on the upper side of the paper will also be called "the other of the first vertical panels 40 42". A recess 43 is formed in one of the first vertical panels 40 41. The recess 43 is formed in an approximately arc shape. Furthermore, in this embodiment, one side 41 of the first vertical panel 40 has a recess 45 located approximately in the center of the recessed portion 43 and a protrusion 47 located on the side opposite to the recess 45. The other side 42 of the first vertical panel 40 has a recess 44. The recess 44 is formed in a substantially arc shape. Furthermore, in this embodiment, the other side 42 of the first vertical panel 40 has a recess 46 located approximately in the center of the recess 44 and a protrusion 48 located on the side opposite to the recess 46. Furthermore, in this embodiment, one side 41 of the first vertical panel 40 has a first insertion hole 141 adjacent to the first side wall 31 and a first groove 143 located on the opposite side from the first insertion hole 141. Furthermore, in this embodiment, the other side 42 of the first vertical plate 40 is formed with a third insertion hole 142 adjacent to the first side wall 31 and a third groove 144 located on the opposite side from the third insertion hole 142.

[0022] A pair of second vertical panels 50 are connected to both ends of the second side wall 32. The pair of second vertical panels 50 function as support plates. As shown in Figure 1, in the assembled state, the pair of second vertical panels 50 are raised so as to be approximately perpendicular to the bottom plate 20 and approximately perpendicular to the second side wall 32. The upper part of the pair of second vertical panels 50 in the assembled state is formed with a recess. In the following description, as shown in Figure 2, the one of the pair of second vertical panels 50 located on the lower side of the paper will also be called "one of the second vertical panels 50 51", and the one of the pair of second vertical panels 50 located on the upper side of the paper will also be called "the other of the second vertical panels 50 52". A recess 53 is formed in one of the second vertical panels 50 51. The recess 53 is formed in an approximately arc shape. In this embodiment, one side 51 of the second vertical panel 50 has a recess 55 located approximately in the center of the recessed portion 53 and a protrusion 57 located on the side opposite to the recess 55. The other side 52 of the second vertical panel 50 has a recess 54. The recess 54 is formed in a roughly arc shape. In this embodiment, the other side 52 of the second vertical panel 50 has a recess 56 located approximately in the center of the recessed portion 54 and a protrusion 58 located on the side opposite to the recess 56. In this embodiment, one side 51 of the second vertical panel 50 has a second insertion hole 151 adjacent to the second side wall 32 and a second groove 153 located on the opposite side of the second insertion hole 151. Furthermore, in this embodiment, the other side 52 of the second vertical plate 50 is formed with a fourth insertion hole 152 adjacent to the second side wall 32 and a fourth groove 154 located on the opposite side from the fourth insertion hole 152.

[0023] The first horizontal panel 60 is formed in conjunction with one side 27 of the second edge 22. As shown in Figure 1, in the assembled state, the first horizontal panel 60 is raised so as to be substantially perpendicular to the bottom panel 20. As shown in Figure 2, the first horizontal panel 60 has a first recess 64 formed on the side opposite to one side 27 of the second edge 22. The first recess 64 is formed in a substantially arc shape. In this embodiment, a pair of first projections 61 are formed at both ends of the first horizontal panel 60. The pair of first projections 61 each protrude outward from two sides substantially perpendicular to one side 27 of the second edge 22.

[0024] The first connecting portion 65 is connected to the first recessed portion 64 of the first horizontal beam plate 60. As shown in Figure 1, the first connecting portion 65 is connected to the upper part of the first horizontal beam plate 60 in the assembled state. As shown in Figure 2, the first connecting portion 65 connects the first horizontal beam plate 60 and the bracing portion 80. In this embodiment, the first connecting portion 65 has a substantially rectangular shape in plan view. In this embodiment, the width of the first connecting portion 65 is set to be slightly smaller than the dimensions to fit into the recesses 45 and 55, i.e., the width of the recesses 45 and 55.

[0025] The brace portion 80 is connected to the first connecting portion 65 at its base portion 81. The brace portion 80 is connected to the first recess portion 64 of the first transverse plate 60 via the first connecting portion 65. In this embodiment, the width of the base portion 81 of the brace portion 80 is formed to be approximately the same as the distance between the pair of insertion portions 95, which will be described later. In this embodiment, the area outside both ends of the base portion 81 of the brace portion 80 functions as a gap 83 for inserting the pair of insertion portions 95 in the assembled state. In this embodiment, the brace portion 80 has an outer edge shape that follows the shape of the first recess portion 64 in the area adjacent to the base portion 81. Therefore, the area of ​​the brace portion 80 adjacent to the base portion 81 is formed in a substantially arc shape. In this embodiment, the width of the tip portion 82 of the brace portion 80 is formed to be approximately the same as the inner dimension of the support member 100. As will be described later, the bracing portion 80 extends toward the other side 28 of the second edge 22 in the assembled state.

[0026] The second horizontal panel 70 is formed in connection with the other side 28 of the second edge 22. As shown in Figure 1, in the assembled state, the second horizontal panel 70 is raised so as to be substantially perpendicular to the bottom plate 20. As shown in Figure 2, the second horizontal panel 70 has a second recess 74 formed on the side of the second horizontal panel 70 that is opposite to the other side 28 of the second edge 22. In this embodiment, a pair of second projections 71 are formed at both ends of the second horizontal panel 70. The pair of second projections 71 each protrude outward from two sides that are substantially perpendicular to the other side 28 of the second edge 22.

[0027] The second connecting portion 75 is connected to the second recess 74 of the second horizontal panel 70. As shown in Figure 1, the second connecting portion 75 is connected to the upper part of the second horizontal panel 70 in the assembled state. As shown in Figure 2, the second connecting portion 75 connects the second horizontal panel 70 and the lid portion 90. In this embodiment, the second connecting portion 75 has a substantially rectangular shape in plan view. In this embodiment, the width of the second connecting portion 75 is set to be slightly smaller than the dimensions to fit into the recesses 46 and 56, i.e., the width of the recesses 46 and 56.

[0028] The lid portion 90 is connected to the second connecting portion 75 at its base portion 91. The lid portion 90 is connected to the second recess portion 74 of the second horizontal plate 70 via the second connecting portion 75. In this embodiment, the lid portion 90 has an outer edge shape that follows the shape of the second recess portion 74 in the region adjacent to the base portion 91. Therefore, the region of the lid portion 90 adjacent to the base portion 91 is formed in a substantially arc shape. In this embodiment, the width of the tip portion 92 of the lid portion 90 is formed to be substantially the same as the inner dimension of the support member 100. As will be described later, the lid portion 90 extends to the first vertical plate 40 in the assembled state.

[0029] The pair of insertion parts 95 are connected to the lid part 90 on the side opposite to the second horizontal plate 70. As will be described later, in the assembled state, the pair of insertion parts 95 are bent toward the bottom plate 20 and overlapped on the inside of the first vertical plate 40. The pair of insertion parts 95 are formed in a position and size that does not interfere with the bracing part 80 in the assembled state, as will be described later. In this embodiment, the distance between the pair of insertion parts 95 is approximately the same as the width of the base part 81. In addition, in this embodiment, the pair of insertion parts 95 have a pair of claw parts 96 facing each other. The pair of claw parts 96 prevent the pair of insertion parts 95 from coming off the bracing part 80 in the assembled state.

[0030] As shown in Figure 2, one side 41 of the first vertical grain plate 40, the other side 42 of the first vertical grain plate 40, one side 51 of the second vertical grain plate 50, the other side 52 of the second vertical grain plate 50, the first horizontal grain plate 60, and the second horizontal grain plate 70 are formed to be approximately the same size and shape as each other. When such a blank sheet 10 is assembled, as shown in Figure 1, one side 41 of the first vertical grain plate 40, one side 51 of the second vertical grain plate 50, and the first horizontal grain plate 60 are superimposed, and the other side 42 of the first vertical grain plate 40, the other side 52 of the second vertical grain plate 50, and the second horizontal grain plate 70 are superimposed, and a support member 100 with a recessed top is formed.

[0031] <Assembly Instructions> Figures 3 to 12 are explanatory diagrams showing an example of how the support member 100 is assembled. Figures 3 to 12 show, in this order, how the blank sheet 10 is assembled into the support member 100 in perspective views.

[0032] Figure 3 shows that the first side wall 31 and a pair of first vertical panels 40 connected to both ends thereof are raised so as to be approximately perpendicular to the base plate 20, and that one of the first vertical panels 41 is bent so as to be approximately perpendicular to the first side wall 31. A protrusion 47 formed on the lower part of one of the first vertical panels 41 is inserted into a through hole 23 formed in the base plate 20.

[0033] Figure 4 shows that the second side wall 32 and a pair of second vertical panels 50 connected to both ends thereof are raised so as to be approximately perpendicular to the base plate 20, and one side 51 of the second vertical panel 50 is bent so as to be approximately perpendicular to the second side wall 32. A protrusion 57 formed on the lower part of one side 51 of the second vertical panel 50 is inserted into a through hole 23 formed in the base plate 20. One side 51 of the second vertical panel 50 is superimposed on the outside of one side 41 of the first vertical panel 40. As a result, the first insertion hole 141 formed in one side 41 of the first vertical panel 40 and the second groove 153 formed in one side 51 of the second vertical panel 50 are superimposed, and the first groove 143 formed in one side 41 of the first vertical panel 40 and the second insertion hole 151 formed in one side 51 of the second vertical panel 50 are superimposed. As a result, a pair of first holes 161 are formed that penetrate one side 41 of the first vertical plate 40 and one side 51 of the second vertical plate 50.

[0034] Figure 5 shows the process of erecting the first horizontal plate 60 and the bracing section 80 connected thereto. A pair of first projections 61 formed at both ends of the first horizontal plate 60 are inserted into a pair of first holes 161. When inserted, the claws formed at the ends of the pair of first projections 61 are bent, and after insertion, the bend of the claws is released.

[0035] Figure 6 shows that the first horizontal plate 60 is raised so as to be approximately perpendicular to the base plate 20, and that a pair of first projections 61 are inserted into a pair of first holes 161. One side 41 of the first vertical plate 40, one side 51 of the second vertical plate 50, and the first horizontal plate 60 are overlapped with each other so that the first horizontal plate 60 is on the outside. By inserting the pair of first projections 61 into the pair of first holes 161, one side 41 of the first vertical plate 40, one side 51 of the second vertical plate 50, and the first horizontal plate 60 are fixed in an overlapping state.

[0036] Figure 7 shows the state shown in Figure 6 as viewed from the side of the pair of insertion parts 95.

[0037] Figure 8 shows the first connecting portion 65 and the bracing portion 80 in a bent state. The first connecting portion 65 is bent so as to be approximately perpendicular to the first horizontal plate 60, thereby becoming approximately parallel to the bottom plate 20. In this embodiment, the first connecting portion 65 fits into the recesses 45 and 55. The bracing portion 80 extends toward the other side 28 of the second edge 22 when bent. The base portion 81 of the bracing portion 80 abuts against one side 41 of the first vertical plate 40. The tip portion 82 of the bracing portion 80 abuts against the bottom plate 20. The bracing portion 80 abuts against the first side wall 31 and the second side wall 32 on the tip portion 82 side. The first horizontal beam 60 and the base 81 of the bracing portion 80 sandwich one side 41 of the first vertical beam 40 and one side 51 of the second vertical beam 50.

[0038] Figure 9 shows how the other side 42 of the first vertical plate 40 is bent so as to be approximately perpendicular to the first side wall 31. A protrusion 48 formed on the lower part of the other side 42 of the first vertical plate 40 is inserted into a through hole 24 formed in the base plate 20. The lower part of the other side 42 of the first vertical plate 40 abuts against the tip 82 of the brace portion 80. Therefore, the brace portion 80 abuts against the upper part of one side 41 of the first vertical plate 40 at its base 81 and against the lower part of the other side 42 of the first vertical plate 40 at its tip 82. With this configuration, in a side view of the support member 100, the brace portion 80 extends diagonally from the upper part of one side 41 of the first vertical plate 40 to the lower part of the other side 42 of the first vertical plate 40. The bracing section 80 is configured to be braced between one side 41 of the first vertical board 40 and the other side 42 of the first vertical board 40.

[0039] Figure 10 shows how the other end 52 of the second vertical plate 50 is bent so as to be approximately perpendicular to the second side wall 32. The protrusion 58 formed on the lower part of the other end 52 of the second vertical plate 50 is inserted into the through hole 24 formed in the bottom plate 20. The other end 52 of the second vertical plate 50 is superimposed on the outside of the other end 42 of the first vertical plate 40. As a result, the third insertion hole 142 formed in the other end 42 of the first vertical plate 40 and the fourth groove 154 formed in the other end 52 of the second vertical plate 50 are superimposed, and the third groove 144 formed in the other end 42 of the first vertical plate 40 and the fourth insertion hole 152 formed in the other end 52 of the second vertical plate 50 are superimposed. As a result, a pair of second holes 171 are formed that penetrate the other end 42 of the first vertical plate 40 and the other end 52 of the second vertical plate 50.

[0040] Figure 11 shows the second horizontal plate 70 rising approximately perpendicular to the base plate 20, and the pair of second projections 71 inserted into the pair of second holes 171. The other half 42 of the first vertical plate 40, the other half 52 of the second vertical plate 50, and the second horizontal plate 70 are overlapped with each other so that the second horizontal plate 70 is on the outside. By inserting the pair of second projections 71 into the pair of second holes 171, the other half 42 of the first vertical plate 40, the other half 52 of the second vertical plate 50, and the second horizontal plate 70 are fixed in an overlapping state. When inserting, the claws formed at the ends of the pair of second projections 71 are bent, and after insertion, the bend of the claws is released.

[0041] Figure 12 shows the second connecting portion 75, the lid portion 90, and the pair of insertion portions 95 in the process of being folded. In this embodiment, the second connecting portion 75 fits into the recesses 46 and 56. The pair of insertion portions 95 are inserted into the gap 83 between one side 41 of the first vertical plate 40 shown in Figure 11 and the bracing portion 80. As shown in Figure 12, the pair of insertion portions 95 are folded toward the bottom plate 20 and overlapped on the inside of one side 41 of the first vertical plate 40. In this embodiment, the pair of claw portions 96 shown in Figure 11 fit into both ends of the base portion 81 of the bracing portion 80 from the gap 83, thereby preventing the pair of insertion portions 95 from coming out of the bracing portion 80. As a result, the bracing portion 80 and the pair of insertion portions 95 are held in a closed state.

[0042] As shown in Figure 1, the second connecting portion 75 and the lid portion 90 are bent so as to be approximately perpendicular to the second horizontal plate 70, making them approximately parallel to the bottom plate 20. The base portion 91 of the lid portion 90 abuts against the other 42 of the first vertical plate 40. The lid portion 90 extends to one 41 of the first vertical plate 40. Therefore, the lid portion 90 is approximately parallel to the bottom plate 20 and abuts against one 41 and the other 42 of the first vertical plate 40. The lid portion 90 is configured to be braced between one 41 and the other 42 of the first vertical plate 40. In addition, the lid portion 90 abuts against the first side wall 31 and the second side wall 32 on the tip portion 92 side. The other side 42 of the first vertical plate 40 and the other side 52 of the second vertical plate 50 are sandwiched between the second horizontal plate 70 and the base 91 of the lid 90. With this, the support member 100 is completed.

[0043] As described above, the support member 100 of this embodiment is constructed by assembling blank sheets 10, thus suppressing an increase in the amount of material. In addition, the bracing portion 80, which is connected to the upper part of the first horizontal plate 60 via the first connecting portion 65, extends toward the other side 28 of the second edge 22, so that the bracing portion 80 can be braced inside the substantially box-shaped support member 100. Furthermore, one side 41 of the first vertical plate 40 and one side 51 of the second vertical plate 50 are sandwiched between the first horizontal plate 60 and the base portion 81 of the bracing portion 80, so that the two vertical plates can be maintained substantially perpendicular to the bottom plate 20. With this configuration, the support member 100 can suppress distortion and deformation, resulting in excellent pressure resistance. Therefore, the support member 100 of this embodiment has excellent pressure resistance while suppressing an increase in the amount of material. As a result of its excellent pressure resistance, the support member 100 can support articles even when the articles placed on it are heavy.

[0044] Furthermore, in this embodiment, the support member 100 has a lid portion 90 that is connected to the upper part of the second horizontal plate 70 via a second connecting portion 75 and extends to one side 41 of the first vertical plate 40, so that the lid portion 90 can be braced inside the substantially box-shaped support member 100. Moreover, the other side 42 of the first vertical plate 40 and the other side 52 of the second vertical plate 50 are sandwiched between the second horizontal plate 70 and the base portion 91 of the lid portion 90, so that the two vertical plates can be held more stably, substantially perpendicular to the bottom plate 20. With this configuration, the support member 100 has a two-way bracing structure inside, provided by the bracing portion 80 and the lid portion 90, so that distortion and deformation can be further suppressed, and as a result the pressure resistance strength can be further improved.

[0045] Furthermore, in this embodiment, the support member 100 has a pair of insertion portions 95 connected to the lid portion 90 which are bent toward the bottom plate 20 and overlapped on the inside of one of the first vertical plates 40 41, thus preventing the lid portion 90 from shifting. As a result, distortion and deformation of the support member 100 can be further suppressed, thereby improving the pressure resistance strength.

[0046] Furthermore, in this embodiment, the support member 100 has a pair of first projections 61 that are inserted into a pair of first holes 161 formed by penetrating one 41 of the first vertical plate 40 and one 51 of the second vertical plate 50. As a result, tilting of the two vertical plates can be suppressed, and deformation of the support member 100 can be further suppressed. Furthermore, in this embodiment, the support member 100 has a pair of second projections 71 that are inserted into a pair of second holes 171 formed by penetrating the other 42 of the first vertical plate 40 and the other 52 of the second vertical plate 50. As a result, tilting of the two vertical plates can be suppressed, and deformation of the support member 100 can be further suppressed.

[0047] Furthermore, in this embodiment, the support member 100 has a roughly box-like external shape with two vertically oriented plates on each side overlapping as a support plate, resulting in a total of four vertically oriented plates on both sides, which further suppresses the reduction in pressure resistance strength. In addition, in this embodiment, the bracing portion 80 of the support member 100 also abuts against the first side wall 31 and the second side wall 32, which further suppresses the deformation of the support member 100. In addition, in this embodiment, the lid portion 90 of the support member 100 also abuts against the first side wall 31 and the second side wall 32, which further suppresses the deformation of the support member 100.

[0048] Furthermore, since the support material 100 of this embodiment is constructed by assembling a single blank sheet 10 shown in Figure 2, the complexity of the assembly process can be suppressed. Also, compared to a configuration that combines multiple parts, unlike the present invention, the number of parts can be reduced, and as a result, the increase in the cost required for managing parts can be suppressed. In addition, since the support material 100 of this embodiment can maintain its shape without being fixed with tape or adhesive, the complexity of the assembly process can be further suppressed. Furthermore, since the support material 100 of this embodiment is constructed by assembling a blank sheet 10, the increase in material costs and processing costs can be suppressed compared to a corrugated cardboard core formed by laminating corrugated cardboard, and the space required for storage can be reduced. Also, compared to a corrugated cardboard core, excessive strength can be suppressed, resulting in superior shock absorption. Also, compared to a corrugated cardboard core, the strength design can be simplified by adjusting the area of ​​the corrugations.

[0049] B. Comparative example: Figure 13 is a perspective view showing the schematic configuration of the corrugated cardboard support material 500 of the comparative example. Figure 14 is a plan view showing the schematic configuration of the blank sheet 510 before assembly. The corrugated cardboard support material 500 of the comparative example (hereinafter also simply referred to as "support material 500") omits the bracing portion 80, the lid portion 90, and the pair of insertion portions 95.

[0050] In the comparative example, the support member 500 lacks the bracing section 80, resulting in a lack of internal bracing structure and making it prone to deformation and having inferior pressure resistance. Furthermore, the omission of the bracing section 80 also leads to the omission of the first connecting section 65, reducing the holding power of the overlapping vertical boards and resulting in increased deformation and inferior pressure resistance. Additionally, the omission of the cover section 90 also leads to the omission of the second connecting section 75, reducing the holding power of the overlapping vertical boards and resulting in increased deformation and inferior pressure resistance.

[0051] In contrast, the support member 100 of this disclosure has a bracing structure inside, thus providing superior pressure resistance. Furthermore, as can be seen from the comparison between the blank sheet 10 shown in Figure 2 and the blank sheet 510 shown in Figure 14, the blank sheet 10 utilizes the scrap material that would be discarded in the comparative example blank sheet 510, and has bracing portions 80 and lid portions 90 formed therein. Therefore, it is possible to suppress an increase in the amount of material used, and to suppress a decrease in the efficiency of material use when cutting out the blank sheet 10.

[0052] C. Variant: In the above embodiment, the shape of the recess formed on the upper part of the support member 100 was substantially arc-shaped, but it is not limited to a substantially arc shape and may be any shape depending on the shape of the item to be placed on it. For example, as shown below, the recess may be formed to include a straight outer edge. The shapes of the bracing portion 80 and the cover portion 90 may be set according to the shape of the recess, and the widths of the first connecting portion 65 and the second connecting portion 75 may be adjusted.

[0053] Figure 15 is a perspective view showing the schematic configuration of the support member 100a of the modified example 1. Figure 16 is a plan view showing the schematic configuration of the blank sheet 10a before assembly. As shown in Figure 15, the recess at the top of the support member 100a may be formed in a U-shape. As shown in Figure 16, the first recess 64a, the second recess 74a, and the recesses 43a, 44a, 53a, and 54a may be formed in a U-shape.

[0054] Figure 17 is a perspective view showing the schematic configuration of the support member 100b of the modified example 2. Figure 18 is a plan view showing the schematic configuration of the blank sheet 10b before assembly. As shown in Figure 17, the recess at the top of the support member 100b may be formed in a V shape. As shown in Figure 18, the first recess 64b, the second recess 74b, and the recesses 43b, 44b, 53b, and 54b may be formed in a V shape.

[0055] Furthermore, the configuration of the support member 100 in the above embodiment is merely an example and can be modified in various ways. For example, the pair of claw portions 96 may be omitted. Also, for example, the pair of insertion portions 95 may be omitted. Also, for example, the cover portion 90 may be omitted. Also, for example, the pair of first projections 61 and the pair of first holes 161 may be omitted, and the pair of second projections 71 and the pair of second holes 171 may be omitted. In the embodiment in which the pair of first projections 61 are omitted, the vertical shape of the vertical slats may be maintained by the first connecting portion 65 fitting into the recesses 45 and 55 and the bracing structure of the diagonal portion 80, and the members may be bonded together with tape or adhesive. In the embodiment in which the pair of second projections 71 are omitted, the vertical shape of the vertical slats may be maintained by the second connecting portion 75 fitting into the recesses 46 and 56 and the bracing structure of the cover portion 90, and the members may be bonded together with tape or adhesive.

[0056] Furthermore, for example, the pair of insertion parts 95 may be in contact with the bottom plate 20. According to this configuration, the pressure resistance can be further improved. Also, for example, the width of the tip 82 of the bracing part 80 may be smaller than the inner dimensions of the support member 100 and may be spaced apart from at least one of the first side wall 31 and the second side wall 32. Also, for example, the width of the tip 92 of the lid part 90 may be smaller than the inner dimensions of the support member 100 and may be spaced apart from at least one of the first side wall 31 and the second side wall 32.

[0057] Furthermore, for example, the protrusions 47, 48 and the through hole 23 may be omitted, and the protrusions 57, 58 and the through hole 24 may be omitted. Also, for example, the recesses 45, 55 may be omitted, and the recesses 46, 56 may be omitted. Also, for example, one side 41 of the first vertical panel 40 may be superimposed on the outside of one side 51 of the second vertical panel 50. Also, for example, the other side 42 of the first vertical panel 40 may be superimposed on the outside of the other side 52 of the second vertical panel 50.

[0058] This disclosure is not limited to the embodiments described above, and can be implemented in various configurations without departing from its spirit. For example, the technical features in each embodiment corresponding to the technical features in each form described in the summary of the invention can be replaced or combined as appropriate in order to solve some or all of the above-described problems, or to achieve some or all of the above-described effects. Furthermore, if a technical feature is not described as essential in this specification, it can be deleted as appropriate. [Explanation of Symbols]

[0059] 10, 10a, 10b...blank sheet, 20...bottom plate, 21...pair of first edges, 22...pair of second edges, 23, 24...through holes, 25...one of the first edges, 26...the other of the first edges, 27...one of the second edges, 28...the other of the second edges, 31...first side wall, 32...second side wall, 40...pair of first vertical grain plates, 41...one of the first vertical grain plates, 42...second 1. The other half of the vertical grain plate, 43, 43a, 43b, 44, 44a, 44b, 53, 53a, 53b, 54, 54a, 54b... recessed portion, 45, 46, 55, 56... recessed portion, 47, 48, 57, 58... convex portion, 50... a pair of second vertical grain plates, 51... one half of the second vertical grain plate, 52... the other half of the second vertical grain plate, 60... first horizontal grain plate, 61... a pair of first protrusions, 64 , 64a, 64b...First recessed part, 65...First connecting part, 70...Second horizontal plate, 71...Pair of second projections, 74, 74a, 74b...Second recessed part, 75...Second connecting part, 80...Bracing part, 81...Base part, 82...Tip part, 83...Gap, 90...Lid part, 91...Base part, 92...Tip part, 95...Pair of insertion parts, 96...Pair of claw parts, 100, 100a, 100b...Cardboard support material (support material), 141...First insertion hole, 142...Third insertion hole, 143...First groove, 144...Third groove, 151...Second insertion hole, 152...Fourth insertion hole, 153...Second groove, 154...Fourth groove, 161...Pair of first holes, 171...Pair of second holes, 500...Cardboard support material (support material), 510...Blank sheet

Claims

1. A support material made of cardboard, A rectangular base plate having a pair of first edges that are substantially parallel to each other, and a pair of second edges that are substantially perpendicular to the first edges and substantially parallel to each other, A first side wall is connected to one of the first edges and is raised so as to be substantially perpendicular to the bottom plate, A second side wall is connected to the other side of the first edge and is raised so as to be substantially perpendicular to the bottom plate, A pair of first vertical panels are connected to both ends of the first side wall, risen substantially perpendicular to the bottom plate, and are substantially perpendicular to the first side wall, with their upper parts recessed, A pair of second vertical panels are connected to both ends of the second side wall, rising approximately perpendicular to the bottom plate and approximately perpendicular to the second side wall, with their upper parts recessed, A first horizontal plate is connected to one of the second edges, rises up substantially perpendicular to the bottom plate, and has a recessed upper part, A second horizontal plate is connected to the other side of the second edge, rises up substantially perpendicular to the bottom plate, and is formed with a recess at the top, A first connecting portion connected to the upper part of the first horizontal board, At its base, the bracing portion connected to the first connecting portion, Equipped with, One of the first vertical panels, one of the second vertical panels, and the first horizontal panel are overlapped so that the first horizontal panel faces outwards. The other half of the first vertical board, the other half of the second vertical board, and the second horizontal board are superimposed on each other such that the second horizontal board faces outwards. The first horizontal plate and the base of the bracing portion sandwich one of the first vertical plates and one of the second vertical plates. The bracing portion extends toward the other side of the second edge. Cardboard support material.

2. In the corrugated cardboard support material according to claim 1, further, A second connecting portion connected to the upper part of the second horizontal plate, At its base, the lid portion is connected to the second connecting portion, Equipped with, The other half of the first vertical plate and the other half of the second vertical plate are sandwiched between the second horizontal plate and the base of the lid. The lid portion extends to one of the first vertical plates. Cardboard support material.

3. In the corrugated cardboard receiving material according to claim 2, On the opposite side of the second horizontal plate, a pair of insertion portions connected to the lid portion are provided, The pair of insertion portions are bent toward the bottom plate and overlapped on the inside of one of the first vertical plates. Cardboard support material.

4. A corrugated cardboard receiving material according to any one of claims 1 to 3, A pair of first protrusions are formed at both ends of the first horizontal plate. A pair of second protrusions are formed at both ends of the second horizontal plate. The pair of first protrusions are inserted into a pair of first holes formed by penetrating one of the first vertical grain plates and one of the second vertical grain plates. The pair of second protrusions are inserted into a pair of second holes formed by penetrating the other half of the first vertical plate and the other half of the second vertical plate. Cardboard support material.

5. A blank sheet for a corrugated cardboard support material, A rectangular base plate having a pair of first edges that are substantially parallel to each other, and a pair of second edges that are substantially perpendicular to the first edges and substantially parallel to each other, A first side wall connected to one of the first edges, A second side wall connected to the other side of the first edge, A pair of first vertical plates are connected to both ends of the first side wall and are substantially perpendicular to the bottom plate and the first side wall in the assembled state, A pair of second vertical plates are connected to both ends of the second side wall and are substantially perpendicular to the bottom plate and the second side wall in the assembled state, A first horizontal plate is provided, which is connected to one of the second edges and has a first recess formed on the opposite edge, and is substantially perpendicular to the bottom plate in the assembled state, A second horizontal plate is formed on the opposite side of the second edge, which is connected to the other side of the second edge, and is substantially perpendicular to the bottom plate in the assembled state. A bracing portion is connected to the first recess via a first connecting portion and extends toward the other side of the second edge in the assembled state, Equipped with, A blank sheet for a cardboard support material.

6. In the blank sheet of the corrugated cardboard receiving material described in claim 5, further, The second recessed portion is connected to the second connecting portion, and the lid portion extends to the first vertical plate in the assembled state. A blank sheet for a cardboard support material.

7. In the blank sheet of the corrugated cardboard receiving material described in claim 6, further, On the opposite side of the second horizontal plate, a pair of insertion portions connected to the lid portion are provided, The pair of insertion portions are bent toward the bottom plate side in the assembled state and overlapped on the inside of one of the first vertical plates. A blank sheet for a cardboard support material.

8. In a blank sheet of corrugated cardboard receiving material according to any one of claims 5 to 7, A pair of first protrusions are formed at both ends of the first horizontal plate. One side of the first vertical plate has a first insertion hole adjacent to the first side wall and a first groove located on the opposite side from the first insertion hole. One side of the second vertical plate has a second insertion hole adjacent to the second side wall and a second groove located on the opposite side from the second insertion hole. A pair of second protrusions are formed at both ends of the second horizontal plate. The other side of the first vertical plate has a third insertion hole adjacent to the first side wall and a third groove located on the opposite side from the third insertion hole. The other side of the second vertical plate has a fourth insertion hole adjacent to the second side wall and a fourth groove located on the opposite side from the fourth insertion hole. In the assembled state, The pair of first protrusions are inserted into the first insertion hole and the second groove, and into the pair of first holes formed by the second insertion hole and the first groove. The pair of second protrusions are inserted into the third insertion hole and the fourth groove, and into the pair of second holes formed by the fourth insertion hole and the third groove. A blank sheet for a cardboard support material.

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