JP2023120613A - Sheet for box - Google Patents

Abstract

To provide a sheet for a box that is resource-saving and that is configured to make a box body in which stored articles are not easily damaged by external force and that prevents a reduction in storage capacity.SOLUTION: A sheet for a box includes a pair of top panels, each pair of connecting pieces extending from both edges on both sides of the pair of top panels, a fixed piece that extends from the tip of the connecting piece and is in contact with the bottom panel from above in a state of assembly, and each pair of support configuration panels extending from both edges of a second pair of side panels. A ridge line of a central core of the support configuration panel is perpendicular to the direction of extension of the support configuration panel. The support configuration panel is configured from a plurality of folded panels that are connected in the same direction of extension. The support configuration panels are configured to make it possible to assemble them into flat plate supports by winding them around with the folded panel on the tip side as the inside. In a state of assembly, the support is configured to be in contact with the bottom panel and the top panel and is sandwiched and fixed between a first side panel and a fixed piece.SELECTED DRAWING: Figure 1

Description

The present invention relates to box sheets.

2. Description of the Related Art As a case for storing and transporting articles, a tray-shaped box assembled from corrugated cardboard sheets, which has a substantially square bottom plate and four side plates erected from the sides of the bottom plate, is sometimes used.

Although the box can display and sell the stored articles as they are after being transported, the stored articles are easily damaged by external forces such as vibrations and impacts received during distribution, especially vertical external forces. In order to prevent such damage, there has been proposed a method of providing triangular prism-shaped corner posts at the four corners of the box (see Japanese Utility Model Laid-Open No. 5-10228).

Japanese Utility Model Laid-Open No. 5-10228

In the case of a box provided with the corner pillars, although it is resistant to vertical impacts, since the corner pillars are shaped like triangular prisms, the area occupied by the corner pillars in the bottom area of the box is not small, and the storage capacity is reduced. It is easy to do so, and the amount of sheet material used to form the corner pillars is greatly increased, which tends to go against resource conservation.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a sheet for a box capable of constructing a resource-saving box body in which stored articles are less likely to be damaged by an external force and a decrease in storage capacity can be suppressed. do.

A box sheet according to an aspect of the present invention is composed of a corrugated cardboard sheet, and includes a substantially rectangular bottom panel, a pair of first side panels extending from a pair of first side edges facing each other of the bottom panel, A box sheet that can be assembled into a tray-shaped box body, comprising a pair of second side panels extending from a pair of opposing second side edges of the bottom panel, wherein the pair of first side panels A pair of top panel extending from a tip edge and bent parallel to the bottom panel, a pair of connecting pieces extending from both side edges of the pair of top panel, extending from the tip of the connecting piece, It further comprises a fixing piece that abuts on the bottom panel from above in an assembled state, and a pair of pillar-constituting panels extending from both side edges of the pair of second side panels, wherein the ridgeline of the central core of the pillar-constituting panels is further provided. , which is perpendicular to the extending direction of the strut-constituting panel, the strut-constituting panel is composed of a plurality of folded panels connected in the extending direction, and the strut-constituting panel includes a tip-side folded panel. It is constructed so that it can be assembled into a flat plate-like post by winding it on the inside, and in the assembled state, the post is configured to abut against the bottom panel and the top panel, and the first side panel. and the fixing piece.

The sheet for a box of the present invention makes it possible to construct a box body in which stored articles are less likely to be damaged by an external force and in which a decrease in storage capacity can be suppressed, while saving resources.

FIG. 1 is a schematic plan view showing a box sheet according to one embodiment of the present invention. 2 is a schematic perspective view showing a box obtained by assembling the box sheets of FIG. 1. FIG. FIG. 3 is a schematic partial enlarged perspective view showing the wound state of the struts of the box of FIG. 2. FIG. 4 is a schematic plan view showing a box sheet according to an embodiment different from FIG. 1. FIG. 5 is a schematic side view showing a box obtained by assembling the box sheets of FIG. 4. FIG. FIG. 6 is a schematic cross-sectional view of the box of FIG. 5 along line AA. FIG. 7 is a schematic plan view showing the vicinity of a support panel of a box sheet according to an embodiment different from FIGS. 1 and 4. FIG. 8 is a schematic partial cross-sectional view showing the vicinity of a column of a box obtained by assembling the box sheets of FIG. 7. FIG.

[Description of the embodiment of the present invention]
First, embodiments of the present invention will be listed and described.

A box sheet according to an aspect of the present invention is composed of a corrugated cardboard sheet, and includes a substantially rectangular bottom panel, a pair of first side panels extending from a pair of first side edges facing each other of the bottom panel, A box sheet that can be assembled into a tray-shaped box body, comprising a pair of second side panels extending from a pair of opposing second side edges of the bottom panel, wherein the pair of first side panels A pair of top panel extending from a tip edge and bent parallel to the bottom panel, a pair of connecting pieces extending from both side edges of the pair of top panel, extending from the tip of the connecting piece, It further comprises a fixing piece that abuts on the bottom panel from above in an assembled state, and a pair of pillar-constituting panels extending from both side edges of the pair of second side panels, wherein the ridgeline of the central core of the pillar-constituting panels is further provided. , which is perpendicular to the extending direction of the strut-constituting panel, the strut-constituting panel is composed of a plurality of folded panels connected in the extending direction, and the strut-constituting panel includes a tip-side folded panel. It is constructed so that it can be assembled into a flat plate-like post by winding it on the inside, and in the assembled state, the post is configured to abut against the bottom panel and the top panel, and the first side panel. and the fixing piece.

In the box sheet, the column-constituting panel is configured to be assembled into a flat-plate-like column by winding the folding panel on the tip side inside. Therefore, the bottom area of the support can be kept small, and the storage capacity is less likely to decrease. In addition, the ridge line of the central core of the support panel is perpendicular to the extending direction of the support panel. For this reason, the ridgeline of the core of the pillars is in the vertical direction of the box body, and the stored articles are less likely to be damaged even when an external force, especially a vertical external force, is applied. Further, the column-constituting panel is composed of a sheet material between the side edge of the second side panel and the connecting piece. For this reason, the size of the corrugated cardboard required for the box sheet is not larger than the size of the corrugated cardboard that would be required if the support panel were not present, and the box can be configured with less resources.

The connection piece abuts the inner surface of the second side panel in an assembled state, and the fixed piece has a protrusion projecting from the side edge of the connection piece toward the second side panel, and the fixed piece is inserted. A possible insertion hole is formed in the lower end of the post, and the post may be fixed by inserting the protrusion into the insertion hole. By configuring the connecting piece in this way, the connecting piece also functions as a pillar supporting between the top panel and the bottom panel, and damage to stored articles can be effectively suppressed. Further, by configuring the fixing piece in this way, the fixing piece is inserted into the insertion hole at the lower end of the support to fix the support, so that the support can be stably fixed.

The connection piece contacts the outer surface of the second side panel in an assembled state, and an insertion hole through which the fixing piece can be inserted is formed in the base end portion of the second side panel. It is preferable to fix the support column by inserting it through the insertion hole. By configuring the connection piece in this way, the connection piece does not pass through the inner surface of the box body, so that the storage capacity is less likely to decrease.

The number of the folded panels is three or more, and the leading edge boundary between the folded panel located at the forefront and the folded panel adjacent thereto is formed by the line of easy folding, and other than the leading edge boundary A boundary is formed by a band-shaped portion located in the central portion and extending along the other boundary, and a pair of cutting lines extending from the center of both end edges of the band-shaped portion along the other boundary, and the band-shaped portion is formed by the Both edges are defined by cutting lines and both side edges are defined by easy-to-fold lines, and the band-like shape at another boundary between the nth (n≧2) and (n+1)th th from the tip of the folded panel The length of the cutting line of the part is preferably (n+1) times the thickness of the cardboard sheet. By configuring the folding panels in this way, it is possible to reliably stack the adjacent folding panels, so it is possible to reliably prevent a decrease in storage capacity.

It is preferable that, in the assembled state, a concave portion is formed in the leading end edge of the column-constituting panel so as to be fitted with the band-shaped portion at the boundary between the second and third sheets from the leading end of the folded panel. By forming the concave portion in this way, it is possible to prevent the winding from being unwound due to repulsion of the wound folded back panel.

In the present invention, the “left and right direction” means the horizontal direction in the assumed general usage of the box formed by assembling the box sheets, and the “upper” and “lower” are assumed. However, it is not intended to limit the orientation of the box during use. "Inside" and "outside" refer to the inside and outside of the box, respectively.

[Details of the embodiment of the present invention]
Hereinafter, a box sheet according to an embodiment of the present invention will be described with reference to the drawings as appropriate.

[First embodiment]
The box sheet 1 shown in FIG. 1 is a box sheet that can be assembled into a tray-shaped box body 2 as shown in FIG. In FIG. 1, thick solid lines indicate cutting lines obtained by cutting the corrugated cardboard sheet, and thin solid lines indicate ruled lines formed by crimping the corrugated cardboard sheet.

The box sheet 1 is composed of one cardboard sheet. The corrugated cardboard sheet may be a so-called double flute in which a core is sandwiched between three liners, instead of one in which both sides of a single core are sandwiched between a pair of liners. A so-called single-faced corrugated board having a liner attached only to one side of the core may be used.

From the viewpoint of strength, the lower limit of the thickness of the corrugated cardboard sheet is preferably 3 mm. On the other hand, although the upper limit of the thickness of the corrugated cardboard sheet is not particularly limited, it is preferably 8 mm from the viewpoint of ease of assembly into the box 2 .

As shown in FIG. 1, the box sheet 1 includes a bottom panel 10, a first side panel 11, a second side panel 12, a top panel 13, a connecting piece 14, a fixed piece 15, and a support. a configuration panel 16;

<Bottom panel>
The bottom panel 10 has a substantially rectangular shape. The size of the bottom panel 10 is appropriately determined according to the size and number of items to be stored. For example, the length of one side can be 10 cm to 40 cm.

<First side panel>
The box sheet 1 has a pair of first side panels 11 . A pair of first side panels 11 extend from a pair of opposed first side edges 10 a of the bottom panel 10 .

The first side panel 11 has a substantially rectangular shape. Also, the first side panel 11 is connected to the entire area of the first side edge 10a. That is, the width (horizontal direction length) of the first side panel 11 is substantially equal to the length of the first side edge 10a.

The extension length of the first side panel 11 (the length in the vertical direction in the assembled state and the height of the box 2) is appropriately determined according to the size and number of stored items. The lower limit of the extension length is preferably 15 cm, more preferably 20 cm. On the other hand, the upper limit of the extension length of the first side panel 11 is preferably 50 cm, more preferably 40 cm. If the extension length of the first side panel 11 is less than the above lower limit, the area of the post-constituting panel 16 described later becomes small, and the strength of the post 17 (see FIG. 2) assembled from the post-constituting panel 16 is sufficiently secured. It may not be possible. Conversely, if the extension length of the first side panel 11 exceeds the above upper limit, the post 17 may become too high and sufficient strength may not be ensured.

As shown in FIG. 1, the first side panel 11 has a stacking protrusion 11a provided substantially in the center of the leading end edge, and an insert provided at a position facing the stacking protrusion 11a on the base edge. A hole 11b may be formed. By providing the stacking protrusions 11a and the insertion holes 11b in this manner, when stacking a plurality of boxes 2, the stacking protrusions 11a of the lower box 2 are aligned with the upper boxes 2. It can be easily fixed by inserting it into the insertion hole 11b. The insertion hole 11b preferably protrudes into the bottom panel 10, and the amount of protrusion is preferably approximately equal to the thickness of the corrugated cardboard sheet.

A hand hole 11 c may be provided in the first side panel 11 . By providing the handle hole 11c in this manner, the operator can easily move the box 2. As shown in FIG.

<Second side panel>
The box sheet 1 comprises a pair of second side panels 12 . A pair of second side panels 12 extend from a pair of opposing second side edges 10 b of the bottom panel 10 .

The second side panel 12 has a substantially rectangular shape. Also, the second side panel 12 is connected to the entire area of the second side edge 10b. That is, the width (horizontal direction length) of the second side panel 12 is substantially equal to the length of the second side edge 10b. The width of the second side panel 12 can be smaller than the width of the first side panel 11, but is preferably equal to or greater than the width of the first side panel 11. Since the ridgeline of the central core of the column-constituting panel 16 is perpendicular to the extending direction of the column-constituting panel 16, the ridgeline of the central core of the second side panel 12 faces upward. On the other hand, in the first side panel 11 extending in the direction perpendicular to the extending direction of the second side panel 12, the ridge line of the central core extends in the left-right direction. Therefore, the strength of the entire box body 2 can be increased by using the panel that is long in the width direction as the panel in which the ridge line of the core is directed upward, that is, the second side panel 12 .

The extension length of the second side panel 12 is approximately equal to the extension length of the first side panel 11 . More precisely, the extension length of the second side panel 12 is preferably less than the extension length of the first side panel 11 by the thickness of the corrugated board sheet. By making the extension length of the second side panel 12 smaller than the extension length of the first side panel 11 by the thickness of the corrugated cardboard sheet in this way, when the box body 2 is assembled, the top panel described later can be It is easy to keep 13 horizontal.

As shown in FIGS. 1 and 2, the second side panel 12 may be formed with a notch 12a for taking out an article at approximately the center of the leading edge. By providing the notch 12a in this way, the stored article can be easily taken out from the notch 12a. 1 and 2 show a configuration in which both the pair of second side panels 12 are provided with the notch 12a, only one of the second side panels 12 is provided with the notch 12a. It can also be configured to be provided.

<Top panel>
The box sheet 1 has a pair of top panels 13 . The pair of top panels 13 extends from the leading edges of the pair of first side panels 11 as shown in FIG. 1 and is folded parallel to the bottom panel 10 as shown in FIG.

When a plurality of boxes 2 are stacked, the top panel 13 functions as a support section that supports the boxes 2 arranged on the upper side from below.

The top panel 13 has a substantially rectangular shape with a large width relative to the length in the extending direction. The length of the top panel 13 in the extending direction is less than half the length of the second side edge of the bottom panel 10, preferably 3/10 or less. The opening 18 of the box 2 can be made sufficiently large by setting the extension direction length of the top panel 13 to the above upper limit or less.

Moreover, as shown in FIG. 1, the top panel 13 preferably has an opening concave portion 13a at the tip edge. By providing the opening concave portion 13a at the tip edge in this manner, the opening 18 of the box 2 can be further enlarged as shown in FIG.

As shown in FIG. 1, the top panel 13 has fixing holes 13b for fixing the upper ends of the supports 17 on both sides of the base edge. The post 17 can be fixed by inserting an upper fixing convex portion 16b of a post-constituting panel 16, which will be described later, into the fixing hole 13b.

<Connecting piece>
The box sheet 1 includes a pair of connection pieces 14 extending from both side edges of a pair of top panels 13 . The connection piece 14 contacts the inner surface of the second side panel 12 in the assembled state, as shown in FIG. By configuring the connection piece 14 in this manner, the connection piece 14 also functions as a pillar supporting between the top panel 13 and the bottom panel 10, and damage to stored articles can be effectively suppressed.

The connection piece 14 has a substantially rectangular shape. The side edge of the connection piece 14 on the tip side of the top panel 13 preferably extends continuously to the tip edge of the top panel 13 . On the other hand, the side edge of the connection piece 14 on the base end side of the top panel 13 preferably extends from the tip side beyond the base end edge of the top panel 13 . In other words, the width of the connection piece 14 is shorter than the length of the top panel 13 in the extending direction, and the connection piece 14 extends from the side edge of the top panel 13 nearer to the tip side. By locating the connection piece 14 in this way, the extension length of the column-constituting panel 16 can be extended, so that the strength of the column 17 can be increased.

The lower limit of the width of the connecting piece 14 is preferably 5 cm, more preferably 7 cm. On the other hand, the upper limit of the width of the connecting piece 14 is preferably 10 cm, more preferably 9 cm. If the width of the connection piece 14 is less than the above lower limit, the strength of the connection piece 14 may be insufficient. Conversely, if the width of the connection piece 14 exceeds the upper limit, there is a risk that the size of the cardboard sheet required for the box sheet 1 will be unnecessarily large, and that the extension length of the column-constituting panel 16 will be sufficiently secured. It may not be possible.

It is preferable that the base end edge of the connection piece 14 is positioned closer to the top panel 13 than the extension line of the side edge of the first side panel 11 by the thickness of the corrugated cardboard sheet. By locating the base edge of the connection piece 14 in this manner, the connection piece 14 can be easily brought into contact with the inner surface of the second side panel 12 in the assembled state.

The extension length of the connecting piece 14 is approximately equal to the extension length of the second side panel 12, and more precisely, the extension length of the second side panel 12 minus the thickness of the cardboard sheet. be done. By setting the extension length of the connection piece 14 to such a length, the lower surface of the fixed piece 15 can be brought into contact with the bottom panel 10 as shown in FIG.

<Fixed piece>
The fixed piece 15 extends from the tip of the connection piece 14 and contacts the bottom panel 10 from above in the assembled state.

The fixed piece 15 has a substantially square shape and may have chamfered corners. The width of the fixing piece 15 excluding the protrusion 15a described later can be made smaller than the width of the connecting piece 14, but it is preferable to make them equal. In other words, it is preferable that the fixed piece 15 is connected to the entire region of the tip edge of the connecting piece 14 .

The lower limit of the extension length of the fixed piece 15 is preferably 3 cm, more preferably 4 cm. On the other hand, the upper limit of the extension length of the fixed piece 15 is preferably 7 cm, more preferably 6 cm. If the extension length of the fixing piece 15 is less than the above lower limit, the contact area with the bottom panel 10 becomes small, and there is a possibility that the support 17 cannot be sufficiently fixed. On the other hand, if the extension length of the fixing piece 15 exceeds the above upper limit, there is a risk that the size of the cardboard sheet required for the box sheet 1 will be unnecessarily large, and that there will be a risk of obstructing the storage of articles.

Moreover, the lower limit of the extension length of the fixing piece 15 is preferably 0.4 times the width of the support 17, and more preferably 0.5 times. On the other hand, the upper limit of the extension length of the fixing piece 15 is preferably 1 time the width of the support 17, and more preferably 0.8 times. If the extension length of the fixing piece 15 is less than the above lower limit, the contact area with the bottom panel 10 becomes small, and there is a possibility that the support 17 cannot be sufficiently fixed. On the other hand, if the extension length of the fixing piece 15 exceeds the above upper limit, there is a risk that the size of the cardboard sheet required for the box sheet 1 will be unnecessarily large, and that there will be a risk of obstructing the storage of articles.

The fixed piece 15 has a projecting portion 15 a that projects from the side edge of the connecting piece 14 toward the second side panel 12 . The side edge of the projecting portion 15a on the distal end side of the fixed piece 15 preferably extends continuously to the distal end edge of the fixed piece 15 excluding the projecting portion 15a. On the other hand, the side edge of the protruding portion 15a on the base end side of the fixed piece 15 may extend so as to contact one side edge of the support panel 16 . By locating the side edges of the protrusions 15a in this way, it is possible to prevent an increase in the size of the corrugated cardboard sheet required for the box sheet 1, and to ensure a sufficient extension length of the column-constituting panel 16. can be done.

The extension length of the projecting portion 15 a is at least equal to or less than the thickness of the support 17 . Moreover, it is preferable that the extension length of the projecting portion 15a is equal to or greater than the thickness of the corrugated cardboard sheet. Specifically, the extension length of the projecting portion 15a can be, for example, 1 cm or more and 2 cm or less. By setting the extension length of the projecting portion 15a within the above range, the post 17 can be stably fixed.

<Strut configuration panel>
The box sheet 1 includes a pair of pillar-constituting panels 16 extending from both side edges of the pair of second side panels 12 .

The ridge line of the center core of the column-constituting panel 16 is perpendicular to the extending direction of the column-constituting panel 16 . In other words, the box sheet 1 is oriented so that the ridgeline of the core of the corrugated cardboard sheet is oriented as described above.

It is preferable that the pillar-constituting panel 16 has a substantially rectangular shape, and that the tip edge thereof is in contact with the side edge of the connection piece 14 . By setting the extending length of the column-constituting panel 16 to such a length that the tip end edge thereof contacts the side edge of the connection piece 14 in this manner, the strength of the column 17 can be increased.

As shown in FIG. 1, the strut-constituting panel 16 is composed of three folded panels 20 (first folded panel 21, second folded panel 22 and third folded panel 23 from the tip side) connected in the extending direction. It is configured.

The width of the first folded panel 21 (the length in the extending direction of the strut-constituting panel 16), the width of the second folded panel 22, and the width of the third folded panel 23 are substantially equal. In other words, the first folding panel 21, the second folding panel 22 and the third folding panel 23 divide the column structure panel 16 into approximately three equal parts in the extending direction. More precisely, from the first folding panel 21 to the third folding panel 23, the width is increased by the thickness of the cardboard sheet.

Further, the height of the first folded panel 21 (the length in the direction perpendicular to the extending direction of the support column 16), the height of the second folded panel 22, and the height of the third folded panel 23 are equal, It is approximately equal to the extension length of the first side panel 11 . As a result, the post 17 is configured to contact the bottom panel 10 and the top panel 13 in the assembled state.

The strut-constituting panel 16 is configured so that it can be assembled into a flat-plate-like strut 17 by winding with the first folded panel 21 on the tip side inside. That is, as shown in FIG. 3 , in the assembled state, the inner surface of the first folded panel 21 contacts the outer surface of the second folded panel 22 , and the outer surface of the first folded panel 21 contacts the inner surface of the third folded panel 23 . come into contact with The inner surface of the second folded panel 22 faces the space inside the box 2 , and the outer surface of the third folded panel 23 contacts the inner surface of the first side panel 11 .

The leading edge boundary between the first folding panel 21 located at the leading edge and the second folding panel 22 adjacent thereto is formed by a line of easy folding. Boundaries other than the leading edge boundary are formed by a belt-shaped portion 20a located in the center and extending along the other boundary, and a pair of cutting lines extending from the center of both edges of the belt-shaped portion 20a along the other boundary. The band-shaped portion 20a has both edges defined by the cutting lines and both side edges defined by the easy-to-fold lines. The length of the cutting line is preferably three times the thickness of the corrugated cardboard sheet. By configuring the folding panels 20 in this way, the folding panels 20 adjacent to each other can be reliably stacked, so that a decrease in storage capacity can be reliably suppressed.

A recessed portion 16a is formed at the leading end edge of the support panel 16 so as to fit with the band-shaped portion 20a at the boundary between the second and third sheets from the tip of the folding panel 20 in the assembled state (see FIG. 3). . By forming the concave portion 16a in this manner, it is possible to prevent the winding from being unwound due to repulsion of the folded back panel 20 that has been wound.

An upper fixing projection 16b is provided at the upper end of the folding panel 20 (the third folding panel 23 in FIG. 1) on the most proximal side of the column-constituting panel 16 . The upper fixing protrusion 16b is configured to be insertable into the fixing hole 13b of the top panel 13 in the assembled state, and the upper part of the post 17 can be fixed to the top panel 13. As shown in FIG.

As shown in FIG. 1, each folding panel 20 is formed with an insertion hole concave portion 20b at its lower end. When the support 17 is formed by winding the folded panel 20, the insertion hole recess 20b forms an insertion hole 17a at the lower end of the support 17. As shown in FIG. The fixing piece 15 can be inserted into the insertion hole 17a (see FIG. 2). Specifically, by inserting the protruding portion 15a of the fixed piece 15 into the insertion hole 17a, the post 17 is sandwiched between the first side panel 11 and the fixed piece 15 and fixed. Since the support 17 is fixed by inserting the fixing piece 15 into the insertion hole 17a at the lower end of the support 17 in this manner, the support 17 can be stably fixed.

<Advantages>
In the box sheet 1, the support panel 16 can be assembled into a flat support 17 by winding the folded panel 20 on the tip side inside. Therefore, the bottom area of the column 17 is kept small, and the storage capacity is less likely to decrease. In addition, the ridge line of the central core of the column-constituting panel 16 is perpendicular to the extending direction of the column-constituting panel 16 . For this reason, the ridgeline of the core of the post 17 is in the vertical direction of the box 2, and the stored articles are less likely to be damaged even if an external force, especially a vertical external force, is applied. Further, the column-constituting panel 16 is composed of the sheet material between the side edge of the second side panel 12 and the connecting piece 14 . Therefore, the cardboard sheet required for the box sheet 1 is not larger than the size of the cardboard sheet that would be required if the support panel 16 were not present, and the box body 2 can be configured with resource saving. .

[Second embodiment]
The box sheet 3 shown in FIG. 4 is composed of a cardboard sheet, and includes a substantially rectangular bottom panel 10 and a pair of first side panels 11 extending from a pair of first side edges 10a of the bottom panel 10 facing each other. , and a pair of second side panels 12 extending from the pair of second side edges 10b facing each other of the bottom panel 10, and a box sheet that can be assembled into the tray-shaped box body 4 shown in FIG. A pair of top panels 13 extending from the leading edges of the pair of first side panels 11 and bent parallel to the bottom panel 10, and a pair of connection pieces 34 extending from both side edges of the pair of top panels 13. , a fixing piece 35 extending from the tip of the connecting piece 34 and abutting on the bottom panel 10 from above in the assembled state, and a pair of columns forming panels 16 extending from both side edges of the pair of second side panels 12. The ridge line of the center core of the column composing panel 16 is perpendicular to the extending direction of the column composing panel 16, and the column composing panel 16 is composed of three folded panels 20 connected in the extending direction. The column structure panel 16 is configured to be assembled into a flat plate-shaped column 17 by winding the panel 16 with the first folded panel 21 on the tip side inside. It is configured to abut against the top panel 13 , and is sandwiched and fixed between the first side panel 11 and the fixing piece 35 .

Since the bottom panel 10, the first side panel 11, and the top panel 13 can be configured in the same manner as the box sheet 1 according to the first embodiment, they are denoted by the same reference numerals and detailed description thereof is omitted.

The second side panel 12 is formed with an insertion hole 12 b through which the fixing piece 35 can be inserted, at the base end of the second side panel 12 . The second side panel 12 can be configured in the same manner as the second side panel 12 of the box sheet 1 according to the first embodiment, except that the insertion hole 12b is formed. omitted.

The strut-constituting panel 16 can be configured in the same manner as the strut-constituting panel 16 of the box sheet 1 according to the first embodiment, except that the insertion hole recess 20b is not formed at the lower end of each folded panel 20. Reference numerals are attached and detailed explanations are omitted.

<Connecting piece>
The connection piece 34 contacts the outer surface of the second side panel 12 in the assembled state, as shown in FIG.

The extension length of the connecting piece 34 is approximately equal to the extension length of the second side panel 12, and more precisely, the extension length of the second side panel 12 plus the thickness of the cardboard sheet. be done. By setting the extension length of the connection piece 34 to such a length, the lower surface of the fixed piece 35 can be brought into contact with the bottom panel 10 .

Since other configurations of the connection piece 34 can be configured in the same manner as the connection piece 14 of the box sheet 1 according to the first embodiment, detailed description thereof will be omitted.

<Fixed piece>
In the box sheet 3, by inserting the fixed piece 35 through the insertion hole 12b, the support 17 is sandwiched between the first side panel 11 and the fixed piece 35 as shown in FIG. can be fixed.

The fixing piece 35 has a substantially square shape, and as shown in FIGS. 4 and 6, preferably has a spindle shape with swollen central portions of both side edges. By forming the fixing piece 35 into a spindle shape in this way, the support 17 can be strongly pressed against the first side panel 11 side, so that the support 17 can be fixed more stably.

Other configurations of the fixed piece 35 can be configured in the same manner as the fixed piece 15 of the sheet for box 1 according to the first embodiment, except that the fixed piece 35 does not have the projecting portion 15a, so detailed description thereof will be omitted.

<Advantages>
In the box sheet 3, since the connection piece 34 does not pass through the inner surface of the box 4, the storage capacity is less likely to decrease.

[Other embodiments]
The above embodiments do not limit the configuration of the present invention. Therefore, in the above embodiment, the components of each part of the above embodiment can be omitted, replaced, or added based on the description of the present specification and common general technical knowledge, and all of them are interpreted as belonging to the scope of the present invention. should.

In the first embodiment, the top panel has a fixing hole, but the fixing hole is not an essential component and can be omitted. In this case, the projections for fixing the upper part of the column-constituting panel are also omitted. On the other hand, in the above-described second embodiment, it is also possible to adopt a configuration in which the top panel has a fixing hole and the column-constituting panel 16 has an upper fixing protrusion that can be inserted into the fixing hole.

In the above-described embodiment, the case where the column-forming panel has the concave portion and the band-shaped portion has been described, but the present invention also includes a configuration that does not have the concave portion, and a configuration that does not have both the concave portion and the band-shaped portion. be.

In the above embodiment, the case where the number of folding panels is three has been described, but the number of folding panels may be two or four or more.

In the box sheet 5 shown in FIG. 7, the column-constituting panel 56 includes four folded panels 20 (first folded panel 21, second folded panel 22, third folded panel from the tip side) connected in the extending direction. 23 and a fourth folding panel 24). As shown in FIG. 8, the support panel 56 is configured to be assembled into a flat support 57 by winding with the first folded panel 21 on the tip side inside.

In the box sheet 5, the leading edge boundary between the first folded panel 21 located at the leading edge and the second folded panel 22 adjacent thereto is formed by the easy folding line, and the leading edge boundary is excluded. is formed by a band-shaped portion 20a located in the central portion and extending along the other boundary, and a pair of cutting lines extending from the center of both end edges of the band-shaped portion 20a along the other boundary.

The box sheet 5 has two belt-shaped portions 20a, and each of the belt-shaped portions 20a has both edges defined by cutting lines and both edges defined by easy folding lines. The length of the cutting line of the band-shaped portion 20a at the boundary between the second folded panel 22 and the third folded panel 23 is preferably three times the thickness of the corrugated cardboard sheet. The length of the cutting line of the band-shaped portion 20a at the boundary with 24 is preferably four times the thickness of the corrugated cardboard sheet. To generalize this, the length of the cutting line of the band-shaped portion 20a at the boundary between the nth (n≧2) and (n+1)th th sheets from the tip of the folding panel 20 is the thickness of the corrugated cardboard sheet (n+1 ) times. By configuring the folding panels 20 in this way, the folding panels 20 adjacent to each other can be reliably stacked, so that a decrease in storage capacity can be reliably suppressed.

Regardless of the number of folded panels 20, the lower limit of the width of one folded panel 20 is preferably 5 cm, more preferably 6 cm. On the other hand, the upper limit of the width of one folding panel 20 is preferably 10 cm, more preferably 9 cm. If the width of one folded panel 20 is within the above range, the extension of the support panel 56 in the tall box 6 (that is, the box sheet 5 in which the first side panel 11 extends long) The length becomes longer, and the number of folding panels 20 also increases. In other words, as the height of the box 6 increases, the number of folding panels 20 increases to form a high-strength column. gain strength.

As described above, the sheet for a box of the present invention makes it possible to construct a box body in which stored articles are less likely to be damaged by an external force and a decrease in storage capacity can be suppressed while saving resources.

1, 3, 5 Box sheets 2, 4, 6 Box body 10 Bottom panel 10a First side edge 10b Second side edge 11 First side panel 11a Stacking projection 11b Insertion hole 11c Hand hole 12 Second side Panel 12a Notch 12b Insertion hole 13 Top panel 13a Opening recess 13b Fixing holes 14, 34 Connection pieces 15, 35 Fixing piece 15a Protrusions 16, 56 Column structure panel 16a Recess 16b Upper fixing protrusions 17, 57 Support 17a Insertion hole 18 Opening 20 Folding panel 20a Belt-shaped part 20b Insertion hole recess 21 First folding panel 22 Second folding panel 23 Third folding panel 24 Fourth folding panel

Claims (5)

Consists of cardboard sheets,
a substantially rectangular bottom panel;
a pair of first side panels extending from a pair of opposing first side edges of the bottom panel;
a pair of second side panels extending from a pair of opposing second side edges of the bottom panel;
A box sheet that can be assembled into a tray-shaped box body,
a pair of top panels extending from tip edges of the pair of first side panels and bent parallel to the bottom panel;
each pair of connection pieces extending from both side edges of the pair of top panel;
a fixing piece extending from the tip of the connection piece and abutting against the bottom panel from above in an assembled state;
each pair of support structure panels extending from both side edges of the pair of second side panels;
a ridgeline of the central core of the support panel is perpendicular to the extending direction of the support panel;
The strut-constituting panel is composed of a plurality of folded panels connected in its extending direction,
The strut-constituting panel is configured so that it can be assembled into a flat-plate-shaped strut by winding the folded panel on the tip side inside,
A sheet for a box, wherein, in an assembled state, the struts are configured to abut against the bottom panel and the top panel, and are sandwiched and fixed between the first side panel and the fixing piece. The connecting piece contacts the inner surface of the second side panel in an assembled state,
the fixing piece has a projecting portion projecting from the side edge of the connecting piece toward the second side panel;
An insertion hole into which the fixing piece can be inserted is formed at the lower end of the support,
The box sheet according to claim 1, wherein the support is fixed by inserting the projecting portion into the insertion hole. The connecting piece contacts the outer surface of the second side panel in an assembled state,
An insertion hole through which the fixing piece can be inserted is formed in the base end portion of the second side panel,
2. The box sheet according to claim 1, wherein the support is fixed by inserting the fixing piece through the insertion hole. The number of folding panels is 3 or more,
The leading edge boundary between the folding panel located at the leading edge and the folding panel adjacent thereto is formed by an easy fold line,
A boundary other than the leading edge boundary is formed by a belt-shaped portion located in the center and extending along the other boundary, and a pair of cutting lines extending from the center of both edges of the belt-shaped portion along the other boundary. is,
Both edges of the strip-shaped portion are defined by cutting lines, and both edges are defined by easy-to-bend lines,
The length of the cutting line of the band-shaped portion at another boundary between the nth (n≧2) and (n+1)th th sheets from the tip of the folded panel is (n+1) times the thickness of the corrugated cardboard sheet. The box sheet according to claim 1, claim 2 or claim 3. 5. The box according to claim 4, wherein a recess is formed in the leading end edge of the column-constituting panel in an assembled state so as to be fitted with the band-shaped portion at the boundary between the second and third panels from the leading end of the folded panel. sheet for.

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