JP2018177240A - Hexahedron container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To press a tab portion formed on a side portion located on the left and right of a free end of a lid in a container against a slit formed on an upper side portion of a side surface constituting the container opening. This makes it easier to engage, and after engagement, it is possible to engage so that the engaged state is secured as stably as possible. SOLUTION: A virtual straight line y substantially along the front-rear direction of a hexahedron container 1 that is imitated by a tip edge 7k of a tab portion 7g with respect to a virtual center line x along the front-rear direction that divides the hexahedron container 1 into left and right. The slits 11 are formed so as not to be parallel to each other and to follow a virtual curved line segment having the virtual center line side x as the curved outer side. [Selection diagram] Fig. 1

Description

  The present invention relates to the improvement of a hexahedral container made of a sheet of paper or synthetic resin.

  Conventionally, as hexahedron containers made of paper, those shown in FIGS. 8 and 9 are known. The conventional container has a container opening 101 whose upper surface is closed by a lid plate 100. The cover plate 100 is provided with tab portions 100c (ear portions) on the left and right side portions 100b, 100b of the free end 100a. On the upper sides of the left and right side surfaces 102, 102 of the four side surfaces 102 ... 102 forming the container opening 101, folded portions 103 directed inward of the container are formed. In the state where the container opening 101 is closed by the lid plate 100, the folded portion 103 is formed with a slit 103a with which the tab portion 100c is engaged. Specifically, when the tab portion 100c is pressed downward from the state in which the lower surface of the lid plate 100 is in contact with the upper surface of the folded portion 103, the side surface 102 is bent outward, and the tab portion 100c can enter the slit 103a. Situation is created. Thereafter, when the pressing operation is stopped, the side surface is bent back, and the tab portion 100c enters the slit 103a. Thereby, the upper side portion of the side surface 102 and the cover plate 100 are engaged with each other on the left and right of the cover plate 100 (FIG. 9).

  In the container of this type, the state in which the tab portion and the slit are engaged with each other becomes more stable as the overlap between the both is increased. However, if this overlap is simply increased, the amount of deflection of the side surface necessary for inserting the tab portion into the slit also increases, and it becomes difficult to smoothly engage both.

  Therefore, the main problem to be solved by the present invention is that, in the container of this type, the container opening is formed with the tab portion formed on either or both of the side portions positioned on the left and right of the free end of the lid. To make it easy to engage the slit formed on the upper side of the side surface of the side by pressing operation of the tab part, and after the engagement, the engaged state is secured as stably as possible, It is in the point which makes it engageable.

In order to achieve the above object, according to the present invention, a hexahedral container is used.
A hexahedral container made of a sheet of paper or synthetic resin,
The upper surface is constituted by a lid plate closing the container opening, and
One side of the lid plate and the upper side of one of the upper sides of the four sides forming the container opening are connected via a folding line,
A tab portion is formed on either or both of the side portions of the lid plate located on the left and right of one side portion of the lid plate,
At the upper side of the side surface located under the side of the lid plate at the time of closing, an abutment portion of the side of the lid plate is formed,
A slit is formed in the contact portion,
The side surface is bent outward by pressing the tab portion from the closed state, the tab portion is received in the slit, and the side portion of the lid plate is engaged with the upper side portion of the side surface. It has become
Moreover, the virtual straight line substantially along the front-rear direction of the hexahedral container followed by the tip edge of the tab portion is not parallel to the virtual center line along the front-rear direction that divides the hexahedron container left and right. Along with
The slit is formed to follow a virtual curved line segment whose outer side is the center line side.
It was a thing.

  According to the present invention, in a hexahedral container made of a sheet made of paper or synthetic resin, the tab portion formed on the side of the lid is made against the slit formed on the upper side of the side constituting the container opening, After the engagement, it can be engaged so that the engaged state can be secured as stably as possible while facilitating the engagement by the pressing operation of the tab portion.

FIG. 1 is a surface view of a sheet blank of a hexahedral container according to an embodiment of the present invention. FIG. 2 is a perspective view of a hexahedral container formed from the sheet blank, the container opening being in an open state. FIG. 3 is a perspective view of the hexahedral container. FIG. 4 is a perspective view of the main part of the hexahedral container, showing the tab of the lid plate at the top of the figure and the contact part of the upper side of the left side at the bottom of the figure. FIG. 5 is a plan view of an essential part of the hexahedral container, and the tab part is engaged with a slit formed in the contact part. 6 is a cross-sectional view taken along the line A-A in FIG. 7 is a cross-sectional view taken along the line B-B in FIG. FIG. 8 is a perspective view of the conventional example, and its container opening is in an open state. FIG. 9 is a perspective view of a conventional example.

  Hereinafter, based on FIGS. 1-7, the typical embodiment of this invention is described. The hexahedral container 1 according to this embodiment is formed by three-dimensionally assembling sheet blanks produced from sheets made of paper or synthetic resin.

  FIG. 1 shows the sheet blank. The code | symbol 3 comprises the bottom face of the hexahedron container 1 in FIG. Reference numeral 4 a constitutes a front side surface of the side surface 4 of the hexahedral container 1. Reference numeral 4 b constitutes the rear side of the side 4 of the hexahedral container 1. The reference numeral 4 c constitutes the left side surface of the side surface 4 of the hexahedral container 1. The reference numeral 4 d constitutes the right side surface of the side surface 4 of the hexahedral container 1. A folding wire 5 is attached between the bottom 3 and the four side faces 4. The code | symbol 6 is the folding | corning corner part formed between the front side 4a, right and left side 4c, 4d, the back side 4b, and left and right side 4c, 4d.

  In FIG. 1, reference numeral 7 denotes a cover plate that constitutes the upper surface of the hexahedral container 1. The lid plate 7 has its one side 7a connected to the upper side 4e of the rear side 4b via a folding wire 8. A tongue 7d is connected to a side portion on the free end 7b side of the cover plate 7 via a folding line 7c. In addition to the folding line 8, the folding line in the present specification is configured using a known method for easily folding a corrugated cardboard sheet or the like, such as a ruled line, a half cut, a lead crease, a sewing blade or the like.

  In the sheet blank of FIG. 1, four side faces 4... 4 are raised so as to surround the bottom face 3, the folding corner 6 is folded outside the left and right side faces 4 c and 4 d and bonded to the left and right side faces 4 c and 4 d , The upper surface is a box shape with the container opening 2 (FIG. 2).

  The lid plate 7 is folded at a right angle using the folding wire 8, and the tongue piece 7d is folded downward at a right angle using the folding wire 7c, and the tongue piece 7d is inserted into the inside of the front side face 4a. Thus, the container opening 2 is closed to constitute the hexahedral container 1 (FIG. 3). In the drawing, reference numeral 7e is a slit into which the tab 9 formed on the upper side 4e of the front side 4a is inserted.

  In FIG. 1, what is indicated by reference sign x is a virtual center line along the front-rear direction which bisects the hexahedral container 1 configured as described above to the left and right. The imaginary center line x is orthogonal to the folding line 8 which is the center of the opening and closing operation of the cover plate 7.

  A tab portion 7g is formed on the side portion 7f of the lid plate 7 positioned on the left and right of the one side portion 7a of the lid plate 7.

  In the illustrated example, the side portion 7f includes a front and rear kerf 7h substantially along the virtual center line x, and a front kerf extending from the front end of the front and rear grove 7h in the virtual center line x direction. The virtual center line x side is taken as a base by a portion of the side portion 7f divided by 7i and the rear cutting groove 7j extending in the virtual center line x direction from the rear end of the front and rear cutting groove 7h. The tab part 7g whose free end is the opposite side is formed. The tab portion 7g has a long leading edge 7k substantially along the front-rear direction, a leading edge 7m shorter than the long leading edge 7k, and a trailing edge 7n.

  In the illustrated example, the tab portion 7 g is formed at a substantially middle position in the front-rear direction of the lid plate 7. Further, in the illustrated example, the tab portions 7g are formed on the left and right of the lid plate 7, respectively.

  On the other hand, when the container opening 2 is closed by the lid plate 7, the side edge 7f of the lid plate 7 is supported on the upper side 4e of the side surface 4 located below the side edge 7f of the lid plate 7. The contact part 10 is formed.

  In the illustrated example, on the left side surface 4c and the upper side portion 4e of the right side surface 4d, an abutment portion forming region 4f to be the abutment portion 10 divided by the folding line 4g along the longitudinal direction is formed. ing. And in the example of illustration, the upper side of the left side 4c and the right side 4d is made by bending the contact portion configuration area 4f at right angles toward the virtual center line x side using the folding line 4g. The contact portion 10 is formed in the portion 4e.

  Further, a slit 11 is formed in the contact portion 10. In the illustrated example, the slits 11 are formed at substantially middle positions in the front-rear direction in the left and right contact portions 10, 10, respectively.

  In the hexahedral container 1 according to this embodiment, the side surface 4 is bent outward by pressing the tab portion 7g from the closed state, and the tab portion 7g is received in the slit 11 The side 7f of the cover plate 7 and the upper side 4e of the side 4 are engaged with each other.

  Specifically, in the closed state, the tip end edge 7k of the tab portion 7g is positioned slightly outward from the slit 11, so that the tab portion 7g does not enter the slit 11 if the pressing operation is not performed. It has become. Then, the tab portion 7g is pushed from the closed state. When the tab portion 7g is pressed, the side surface 4 (the left side surface 4c in FIGS. 4 to 7) is bent outward through the contact portion 10. When the side surface 4 bends, the contact portion 10 also moves outward, and the slit 11 and the tip end edge 7k of the tab portion 7g align. Since the space between the slit 11 and the edge of the contact portion 10 in front of the slit 11 is slightly bent downward by the pressing operation of the tab portion 7g, a state in which the tip edge 7k of the tab portion 7g can enter into the slit 11 is created. Be When the pressing is stopped from this state, the tab portion 7g enters the slit 11 at the same time as the side surface bends back. As a result, the side 7 f of the lid plate 7 is engaged with the upper side 4 e of the side.

  In the hexahedral container 1 according to this embodiment, a virtual straight line y substantially along the front-rear direction of the hexahedral container 1 along which the tip end edge 7k of the tab portion 7g follows the imaginary center line x. Are not parallel (see FIG. 1).

  In the illustrated example, the imaginary straight line y followed by the tip end edge 7k of the tab portion 7g is inclined in a direction to gradually reduce the distance from the imaginary center line x toward the free end 7b side of the lid plate 7. doing. Although illustration is omitted, as the virtual straight line y which the tip edge 7k of the tab portion 7g follows follows toward the one side portion 7a side of the lid plate 7, the direction to gradually reduce the distance from the virtual center line x It may be inclined.

  Further, the slit 11 is formed so as to follow an imaginary curved line segment (not shown) whose outer side is the imaginary center line x side.

  Thereby, in this embodiment, when the tab portion 7g is pressed and operated from the closed state, the tab portion 7g is the leading end of the tip end edge 7k which makes the distance to the virtual center line x the smallest. The slit 11 is inserted into the slit 11 from the side 7o (see FIG. 4), and the slit 11 smoothly enters the slit 11 as a starting point. Since the slit 11 also follows the imaginary curved line segment, the introduction end 4 o side of the tip end edge 7 k is easier to enter the slit 11. On the other hand, since the slit 11 bulges toward the imaginary center line x at the middle position in the front-rear direction, the tab portion 7g which has entered under the contact portion 10 through the slit 11 and the contact A large overlapping margin with the contact portion 10 can be secured, and the engaged state of both can be stably secured.

  Thus, in the hexahedral container 1 according to this embodiment, the closed state of the container opening 2 by the lid is appropriately maintained also in the side portion 7f of the lid.

  As a matter of course, the present invention is not limited to the embodiments described above, but includes all the embodiments that can achieve the object of the present invention.

1 hexahedron container 7 g tab portion 7 k tip edge 2 slit x imaginary center line y imaginary straight line

Claims (1)

A hexahedral container made of a sheet of paper or synthetic resin,
The upper surface is constituted by a lid plate closing the container opening, and
One side of the lid plate and the upper side of one of the upper sides of the four sides forming the container opening are connected via a folding line,
A tab portion is formed on either or both of the side portions of the lid plate located on the left and right of one side portion of the lid plate,
At the upper side of the side surface located under the side of the lid plate at the time of closing, an abutment portion of the side of the lid plate is formed,
A slit is formed in the contact portion,
The side surface is bent outward by pressing the tab portion from the closed state, the tab portion is received in the slit, and the side portion of the lid plate is engaged with the upper side portion of the side surface. It has become
Moreover, the virtual straight line substantially along the front-rear direction of the hexahedral container followed by the tip edge of the tab portion is not parallel to the virtual center line along the front-rear direction that divides the hexahedron container left and right. Along with
The hexahedron container formed by making the said slit follow the virtual curve line which makes the said center line side a curve outer side.

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