JP2018203324A - Packaging container - Google Patents

Abstract

To provide a technique which suppresses deformation of a lid plate having a breaking part.SOLUTION: A packaging container may comprise a main body which includes an opening, a lid plate which blocks the opening and includes a lid side breaking part in which slits are arranged intermittently, and a reinforcement plate which overlaps with the inner surface of the lid plate and is adhered to the inner surface. The reinforcement plate may be arranged as overlapping with the inner surface side of the breaking part over the almost whole length of the lid side braking part.SELECTED DRAWING: Figure 4

Description

  This specification discloses the technique regarding a packaging container provided with the main body provided with an opening, and the cover plate which closes the opening of a main body.

  Patent Document 1 discloses a technique for disposing an opening portion having a perforation on a cover plate in order to facilitate opening of a packaging container.

Japanese Patent Laying-Open No. 2015-168445

  If a breakage portion that is easy to break compared to other portions such as perforations is arranged on the cover plate, the strength of the cover plate is lowered, and the cover plate is easily deformed. In this specification, the technique which suppresses a deformation | transformation of the cover plate which has a fracture | rupture part is provided.

  The technology disclosed in this specification relates to a packaging container. The packaging container overlaps the inner surface of the main body having an opening, the lid side breaking portion that closes the opening and the slit is intermittently disposed, and the inner surface of the lid plate, and is bonded to the inner surface. And a reinforcing plate. The reinforcing plate may be disposed so as to overlap the inner surface side of the lid side fracture portion over substantially the entire length of the lid side fracture portion.

  By adhering the reinforcing plate to the inner surface of the lid plate and disposing the reinforcing plate on the inner surface of the lid-side fracture portion, deformation at the lid-side fracture portion of the lid plate can be suppressed. For example, in a situation where the packaging containers are stacked, another packaging container may be placed on the cover plate. In this case, force is applied from the outside to the inside of the lid plate. By disposing the reinforcing plate on the inner surface side of the lid side fracture portion, the lid plate can be prevented from being deformed inside the packaging container at the lid side fracture portion.

  The lid plate may be rotatably connected to an end side that defines the opening of the main body. The lid-side fractured portion includes a pair of fractured portions that incline toward the edge of the main body as they proceed from the respective ends sandwiching the edge of the lid to the center of the lid. It may be. Each broken portion may extend beyond the end side of the main body to the side plate of the main body, and the pair of broken portions may be connected by the side plate. According to this configuration, it is not necessary to connect the lid-side fractured portion from one end of the lid plate to the other end. Thereby, it can suppress that the intensity | strength of a cover plate falls by the lid side fracture | rupture part.

  The reinforcing plate may include, for each of the pair of broken portions, a reinforcing side broken portion disposed along the broken portion at a position farther from the side plate than the broken portion. The lid plate and the reinforcing plate may be bonded to both the side plate side of the lid side fracture portion and the side opposite to the side plate of the reinforcement side fracture portion. By disposing the reinforcing-side fracture portion on the reinforcing plate, the lid plate can be easily opened by breaking both the lid-side fracture portion and the reinforcement-side fracture portion. Moreover, since the reinforcement side fracture | rupture part has shifted | deviated and arrange | positioned from the fracture | rupture part of a cover plate, it can suppress that a lid plate becomes easy to deform | transform at a fracture | rupture part by a reinforcement side fracture | rupture part.

  The reinforcing plate is bonded to the lid plate on the side opposite to the side plate of the lid side fracture portion, and may not be bonded to the lid plate on the side plate side than the lid side fracture portion. The reinforcing plate may include, for each of the pair of broken portions, a broken line that is disposed along the broken portion at a position farther from the side plate than the broken portion. According to this configuration, when the lid-side fracture portion is broken and the lid plate is opened, it is possible to suppress the reinforcement plate from being prevented from being opened by bending the reinforcement plate along the fold line.

  The lid plate is rotatably connected to an end side defining the opening of the main body, and the lid plate is connected to an end side of the lid plate opposite to the end side of the main body. The main body passes through a side plate of the main body, and includes a through hole into which the engagement piece is inserted. The separation part which continues with a piece is enclosed, and the said reinforcement board is adhere | attached except the said separation part among the said cover plates, and does not need to be adhere | attached on the said separation part. According to this configuration, it is not necessary to connect the lid-side fractured portion from one side end to the other side end of the lid plate. Further, by breaking the lid-side fracture portion, it is possible to separate a portion of the lid plate that connects the separation portion continuous with the engagement piece to the end side of the main body. Thereby, a cover board can be opened easily.

The front perspective view of the packaging container of 1st Example is shown. The rear perspective view of the packaging container of 1st Example is shown. The expanded view of the packaging container of 1st Example is shown. The front perspective view in the state where the cover board of the 1st example is opened is shown. The figure for demonstrating the opening method of the packaging container of 1st Example is shown. The figure for demonstrating the opening method of the packaging container of 1st Example is shown. The front perspective view of the packaging container of 2nd Example is shown. The rear perspective view of the packaging container of 2nd Example is shown. The expanded view of the packaging container of 2nd Example is shown. The front perspective view of the state which the cover plate of 2nd Example is open is shown. The figure for demonstrating the opening method of the packaging container of 2nd Example is shown. The figure for demonstrating the opening method of the packaging container of 2nd Example is shown. The front perspective view of the packaging container of 3rd Example is shown. The rear perspective view of the packaging container of 3rd Example is shown. The expanded view of the packaging container of 3rd Example is shown. The front perspective view of the state in which the cover plate of 3rd Example is open is shown. The figure for demonstrating the opening method of the packaging container of 3rd Example is shown. The figure for demonstrating the opening method of the packaging container of 3rd Example is shown. The figure for demonstrating the opening method of the packaging container of 3rd Example is shown. The expanded view of the packaging container of a modification is shown. The perspective view after opening of the packaging container of a modification is shown. The expanded view of the packaging container of a modification is shown. The perspective view after opening of the packaging container of a modification is shown.

(First embodiment)
1 shows a perspective view including the front and the plane of the packaging container 10, FIG. 2 shows a perspective view including the back and the plane of the packaging container 10, FIG. 3 shows a developed view of the packaging container 10, and FIG. FIG. 2 shows a perspective view of the packaging container 10 with the lid 12 open. The packaging container 10 is made of strong paper such as corrugated paper. Note that the material of the packaging container 10 may be paper other than cardboard, such as cardboard, or is not limited to paper, and may be plastic. In the present specification, for the convenience of explanation, the front, rear, left, right and up and down directions are defined.

  The packaging container 10 includes a lid plate 12 and a main body 13. The packaging container 10 is assembled from one flat blank BL shown in FIG. In addition, the area | region shown with the grid | lattice pattern shown in FIG. 3 is an area | region where an adhesive agent is apply | coated. The main body 13 includes a bottom plate 22 and four side plates 14, 16, 18, and 20.

  The bottom plate 22 has a rectangular flat plate shape. The side plates 14, 16, 18, and 20 are connected to the four sides of the periphery of the bottom plate 22, respectively. The main body 13 is such that the side plates 14, 16, 18, 20 stand up with respect to the bottom plate 22, and the adhesive pieces 24 connected to the left and right ends of the front and rear side plates 14, 20 are bonded to the side plate 16 or the side plate 18. Assembled by. As shown in FIG. 4, in a state where the main body 13 is assembled, the main body 13 has a rectangular tube shape with a bottom provided with a rectangular opening 13a defined by the side plates 14, 16, 18, 20 at the upper end thereof. Have.

  The side plates 14, 16, 18, and 20 each have a rectangular flat plate shape. The upper ends of the left and right side plates 16 and 18 are respectively provided with bent pieces 16a and 18a rotatably connected to the side plates 16 and 18 over the entire length in the front-rear direction.

  The lid plate 12 is rotatably connected to the upper end side 20a of the side plate 20. The cover plate 12 has a rectangular flat plate shape. The cover plate 12 closes the opening 13a when the packaging container 10 is closed (that is, the state shown in FIGS. 1 and 2).

  The lid plate 12 includes a pair of broken portions 30 and 32. The fracture portion 30 is arranged on a straight line extending obliquely rearward from the intermediate position in the front-rear direction of the right end side of the cover plate 12 toward the left side. The rear end of the fracture portion 30 is located in the middle of the rear end side (that is, the upper end side 20a) of the cover plate 12 in the left-right direction. That is, the fractured portion 30 extends to the upper end side 20 a that is the boundary between the lid plate 12 and the side plate 20. The fracture portion 30 includes a plurality of slits arranged intermittently. In this embodiment, the “slit” is a notch that penetrates the plate, and means that the notch is not opened or slightly opened.

  The breakage portion 32 is arranged on a straight line extending in a rearward direction toward the right side from the same intermediate position as the breakage portion 30 in the front-rear direction of the left end side of the cover plate 12. The rear end of the fracture portion 32 is located in the middle in the left-right direction of the rear end side (that is, the upper end side 20a) of the cover plate 12. The right end of the fracture portion 32 is separated from the left end of the fracture portion 30 in the left-right direction. Like the fracture portion 30, the fracture portion 32 includes a plurality of slits arranged intermittently.

  The rear end of the fracture portion 30 is connected to the fracture portion 40 disposed on the side plate 20 beyond the upper end side 20a. The breakage portion 40 is disposed on a straight line extending obliquely to the left from the rear end of the breakage portion 30 toward the lower side. The lower end of the broken portion 40 is located in the middle of the side plate 20 in the left-right direction. The fracture portion 40 includes a plurality of slits arranged intermittently. The rear end of the fracture portion 32 is connected to a fracture portion 42 disposed on the side plate 20 beyond the upper end side 20a. The fracture portion 42 is disposed on a straight line extending obliquely rightward from the rear end of the fracture portion 32 toward the lower side. The lower end of the fracture portion 42 is located in the middle of the side plate 20 in the left-right direction. The fracture portion 42 includes a plurality of slits arranged intermittently.

  The side plate 20 further includes a fracture portion 44 that connects the lower end of the fracture portion 40 and the lower end of the fracture portion 42. The fracture | rupture part 44 is arrange | positioned at the linear form extended in parallel with the left-right direction. The fracture portion 44 includes a plurality of slits arranged intermittently.

  A pressing portion 48 is disposed below the fracture portion 44. The pressing portion 48 is defined by a pair of slits 46, 46 extending linearly downward from the fracture portion 44.

  An insertion piece 50 is connected to the front end side of the cover plate 12 so as to be rotatable with respect to the cover plate 12. The insertion piece 50 is inserted into the main body 13 in a state where the packaging container 10 is closed.

  A reinforcing plate 52 is connected to the right end side of the cover plate 12. The reinforcing plate 52 is integrally connected to the lid plate 12. The reinforcing plate 52 is bonded to the surface of the lid plate 12 on the main body 13 side, that is, the inner surface. The reinforcing plate 52 has a flat plate shape. The reinforcing plate 52 extends from the right end side of the lid plate 12 toward the left side. The left end side of the reinforcing plate 52 is located slightly to the left of the rear end of the broken portion 30. The reinforcing plate 52 overlaps the entire length of the fractured portion 30. In the modified example, the reinforcing plate 52 may not overlap the entire length of the fractured portion 30. In this case, the reinforcing plate 52 may overlap the entire length of the fractured portion 30 except for at least one of the front end side and the rear end side of the fractured portion 230. The state in which “the reinforcing plate 52 overlaps substantially the entire length of the broken portion 30” has a little influence on the reinforcement of the broken portion 30 because the reinforcing plate 52 is overlapped over most of the broken portion 30. Only a part of the broken part 30 (for example, an end part of the broken part 30) is not overlapped.

  The reinforcing plate 52 includes a broken portion 56 that extends parallel to the broken portion 30. The fracture portion 56 extends once inclined forward from the front end of the fracture portion 30 toward the left side and then inclined rearward in parallel with the fracture portion 30. The fracture portion 56 includes a plurality of slits arranged intermittently. In this configuration, the breakage portion 56 is displaced from the breakage portion 30 forward while the packaging container 10 is closed. As a result, it is possible to avoid the overlapping of the broken portion 30 and the broken portion 56. Thereby, it can suppress that the intensity | strength of the cover board 12 falls in the location where the fracture | rupture part 30 and the fracture | rupture part 56 overlap.

  The reinforcing plate 52 is bonded to the lid plate 12 at the bonding regions 60, 62, and 64. The adhesion regions 60 and 62 are located in front of the fracture portions 30 and 56, while the adhesion region 64 is located in the rear of the fracture portions 30 and 56. That is, the reinforcing plate 52 and the cover plate 12 are bonded to each other at the front and rear of the fractured portions 30 and 56. Thereby, the broken portion 30 of the cover plate 12 can be appropriately reinforced by the reinforcing plate 52.

  A reinforcing plate 54 is connected to the left end side of the lid plate 12. The reinforcing plate 54 is integrally connected to the lid plate 12. The reinforcing plate 54 is bonded to the surface of the lid plate 12 on the main body 13 side, that is, the inner surface in an overlapping manner. The reinforcing plate 54 has a flat plate shape. The reinforcing plate 54 extends from the left end side of the lid plate 12 toward the right side. The reinforcing plate 54 is disposed with a space from the reinforcing plate 52. The right end side of the reinforcing plate 54 is located slightly to the right of the rear end of the fractured portion 32. The reinforcing plate 54 overlaps the entire length of the fractured portion 32. In the modified example, the reinforcing plate 54 may not overlap the entire length of the fractured portion 32, as in the modified example of the reinforcing plate 52 and the fractured portion 30. Also good.

  The reinforcing plate 54 includes a fracture portion 58 that extends parallel to the fracture portion 32. The fracture portion 58 extends once inclined forward from the front end of the fracture portion 32 toward the left side and then inclined rearward in parallel with the fracture portion 32. Similar to the fracture portion 56, the fracture portion 58 includes a plurality of slits arranged intermittently. In this configuration, the broken portion 58 is disposed so as to be shifted forward from the broken portion 32 in a state where the packaging container 10 is closed. Thereby, it can suppress that the intensity | strength of the cover board 12 falls in the location where the fracture | rupture part 32 and the fracture | rupture part 58 overlap.

  The reinforcing plate 54 is bonded to the lid plate 12 in the bonding regions 70, 72, and 74. The adhesion regions 70 and 72 are located in front of the fracture portions 32 and 58, while the adhesion region 74 is located in the rear of the fracture portions 32 and 58. That is, the reinforcing plate 54 and the lid plate 12 are bonded to each other at the front and rear of the broken portions 32 and 58. Thereby, the fracture | rupture part 32 of the cover plate 12 can be appropriately reinforced with the reinforcement board 54. FIG.

  Each of the reinforcing plates 52 and 54 includes bent pieces 66 and 76 extending along the side plate 20 at the rear end.

(Opening method)
Next, a method for opening the packaging container 10 will be described with reference to FIGS. 5 and 6. The user presses the pressing portion 48 on the rear side of the packaging container 10 with the finger F to the inside of the packaging container 10. As a result, the finger F can be inserted below the fracture portion 44. From this state, by pulling up the side plate 20 located above the breakage portion 44, the breakage portions 40, 42, 44 are broken, and the breakage portions 30, 32, 56, 58 are further broken. Thereby, the side plate 20 and the cover plate 12 are broken, and the packaging container 10 is opened.

  The broken portions 56 and 58 are located in front of the broken portions 30 and 32. For this reason, when the packaging container 10 is opened, the reinforcing plates 52 and 54 can be smoothly opened without being caught by the lid plate 12 even if the lid plate 12 is rotated forward.

(Second embodiment)
With reference to FIG. 7 to FIG. 12, the differences between the packaging container 210 of the second embodiment and the packaging container 10 of the first embodiment will be described. 7 shows a perspective view including the front and the plane of the packaging container 210, FIG. 8 shows a perspective view including the back and the plane of the packaging container 210, FIG. 9 shows a developed view of the packaging container 210, and FIG. Shows a perspective view of the packaging container 210 with the lid 212 opened.

  The packaging container 210 includes a lid plate 212 and a main body 213. The packaging container 210 is assembled from one flat blank BL2 shown in FIG. In addition, the area | region shown with the lattice pattern shown in FIG. 9 is an area | region where an adhesive agent is apply | coated. The main body 213 includes four side plates 214, 216, 218, 220 similar to the plates 14, 16, 18, 20, 22 of the first embodiment, and a bottom plate 222.

  The adhesive pieces 224 connected to the left and right ends of the front and rear side plates 214 and 220 are bonded to the side plate 216 or the side plate 218 and also to the bent pieces 216a and 218a connected to the upper ends of the side plates 216 and 218. Has been. Each of the bent pieces 216a and 218a has the same configuration as each of the bent pieces 16a and 18a. As shown in FIG. 10, when the main body 213 is assembled, the main body 213 has a rectangular opening 213 a defined by the side plates 214, 216, 218, and 220 at the upper end, like the main body 13. It has a square tube shape at the bottom.

  A bent piece 214a is rotatably connected to the upper end side of the side plate 214 over the entire length in the left-right direction. An insertion port 214b is disposed at the boundary between the bent piece 214a and the side plate 214. The insertion opening 214b extends in the left-right direction along the boundary between the bent piece 214a and the side plate 214. The insertion port 214b includes a protruding portion 214c that curves toward the side plate 214 with respect to the boundary between the bent piece 214a and the side plate 214 at the central portion in the left-right direction. Each of the left and right ends of the protruding portion 214 c protrudes toward the bent piece 214 a with respect to the boundary between the bent piece 214 a and the side plate 214. Accordingly, when the bent piece 214a is bent toward the main body 213 with respect to the side plate 214, an insertion port 214b is formed.

  A lid plate 212 is rotatably connected to the upper end side 220 a of the side plate 220. The lid plate 212 has the same configuration as the lid plate 12. The lid plate 212 includes a pair of broken portions 230 and 232. The pair of fracture portions 230 and 232 have the same configuration as the pair of fracture portions 30 and 32. The position in the front-rear direction of the pair of broken portions 230 and 232 may be different from the pair of broken portions 30 and 32.

  The rear ends of the fracture portions 230 and 232 are connected to the fracture portion 240 disposed on the side plate 220 beyond the upper end side 220a. The fracture portion 240 is disposed in an arc shape that curves downward from the rear end of the fracture portion 230, and is connected to the rear end of the fracture portion 232. The fracture portion 240 includes a plurality of slits arranged intermittently.

  An insertion piece 250 is connected to the front end side of the cover plate 212 so as to be rotatable with respect to the cover plate 212. By inserting the insertion piece 250 into the insertion opening 214b, the packaging container 210 is closed. Between the insertion piece 250 and the cover plate 212, an opening 250a is disposed at the center in the left-right direction. When the insertion piece 250 is inserted into the insertion port 214b, the protrusion 214c is inserted into the opening 250a, and the insertion piece 250 and the protrusion 214c are engaged. Thereby, it can suppress that the cover plate 212 is opened.

  A reinforcing plate 252 is connected to the right end side of the lid plate 212. The reinforcing plate 252 is integrally connected to the lid plate 212. The reinforcing plate 252 is bonded to the surface of the lid plate 212 on the main body 213 side, that is, the inner surface. The reinforcing plate 252 has a flat plate shape. The reinforcing plate 252 extends from the right end side of the lid plate 212 toward the left side. The left end side of the reinforcing plate 252 extends to the vicinity of the center in the left-right direction of the lid plate 212 beyond the rear end of the fracture portion 230. The reinforcing plate 252 overlaps substantially the entire length of the fractured portion 230. Specifically, the reinforcing plate 252 overlaps the entire length of the fractured portion 230 except for a part of the end portion on the rear end side of the fractured portion 230. The state in which “the reinforcing plate 252 overlaps substantially the entire length of the fractured portion 230” has little influence on the reinforcement of the fractured portion 230 because the reinforcing plate 252 overlaps over most of the fractured portion 230. In this state, only a part of the broken portion 230 does not overlap. In the modification, the reinforcing plate 252 may overlap over the entire length of the fractured portion 230.

  The reinforcing plate 252 includes a folding line 256. The folding line 256 is located in front of the broken part 230. The folding line 256 does not overlap the broken portion 230. The folding line 256 extends to the left and right ends of the reinforcing plate 252. The folding line 256 is easier to bend than the other part of the reinforcing plate 252 by the concave groove extending linearly. The folding line 256 may have a configuration other than the concave groove such as an intermittent slit, and may be bent more easily than other portions of the reinforcing plate 252.

  The reinforcing plate 252 is bonded to the lid plate 212 at the bonding region 260. The adhesion region 260 extends over the entire surface of the reinforcing plate 252 in front of the folding line 256. On the other hand, the reinforcing plate 252 and the cover plate 212 are not bonded on the rear side of the folding line 256.

  A reinforcing plate 254 is connected to the left end side of the lid plate 212. The reinforcing plate 254 is integrally connected to the lid plate 212. The reinforcing plate 254 is bonded to the inner surface of the lid plate 212 in an overlapping manner. The reinforcing plate 254 has a flat plate shape similar to that of the reinforcing plate 252. The reinforcing plate 254 extends from the left end side of the lid plate 212 toward the right side. The right end side of the reinforcing plate 252 extends to the vicinity of the center in the left-right direction of the lid plate 212 beyond the rear end of the broken portion 232. The right end side of the reinforcing plate 254 is disposed with a slight gap from the left end side of the reinforcing plate 252. The reinforcing plate 254 overlaps substantially the entire length of the broken portion 232 in the same manner as the reinforcing plate 252 for the broken portion 230.

  The reinforcing plate 254 includes a folding line 258. The folding line 258 is located in front of the broken part 232 and does not overlap the broken part 232. The folding line 258 extends to the left and right ends of the reinforcing plate 254. The folding line 258 has the same configuration as the folding line 256.

  The reinforcing plate 254 is bonded to the lid plate 212 at the bonding region 262. The adhesion region 262 extends over the entire surface of the reinforcing plate 254 in front of the folding line 258. On the other hand, the reinforcing plate 254 and the lid plate 212 are not bonded to the rear side of the folding line 258.

(Opening method)
Next, a method for opening the packaging container 210 will be described with reference to FIGS. The user presses the portion located above the fracture portion 240 provided on the side plate 220 of the packaging container 210 with the finger F to the inside of the packaging container 210. As a result, the broken portion 240 is broken and the finger F can be inserted below the lid plate 212. Thereby, the finger F is pulled up so that the cover plate 212 is rotated with respect to the side plate 214. Thereby, the fracture | rupture parts 230 and 232 are fractured | ruptured. At this time, the reinforcing plates 252 and 254 are in contact with portions on the rear side of the broken portions 230 and 232 of the lid plate 212 and bend at folding lines 256 and 258. Thereby, since the reinforcing plates 252 and 254 located behind the folding lines 256 and 258 do not interfere with each other, it is possible to prevent the packaging container 210 from being difficult to open.

(Third embodiment)
With reference to FIG. 13 to FIG. 19, the differences between the packaging container 310 of the third embodiment and the packaging container 10 of the first embodiment will be described. 13 shows a perspective view including the front and the plane of the packaging container 310, FIG. 14 shows a perspective view including the back and the plane of the packaging container 310, FIG. 15 shows an exploded view of the packaging container 310, and FIG. Shows a perspective view of the packaging container 310 in a state where the lid plate 312 is opened.

  The packaging container 310 includes a lid plate 312 and a main body 313. The packaging container 310 is assembled from one flat blank BL3 shown in FIG. In addition, the area | region shown with the lattice pattern shown in FIG. 15 is an area | region where an adhesive agent is apply | coated.

  The main body 313 includes a bottom 322 and four side plates 314, 316, 318, 320. The bottom part 322 includes four bottom plates 322a, 322b, 322c, and 322d. The bottom plates 322a, 322b, 322c, and 322d all have a flat plate shape. The bottom plate 322a and the bottom plate 322d are bonded, and the bottom plate 322c and the bottom plate 322b are bonded. As shown in FIG. 16, the bottom 322 is formed by the bottom plate 322a and the bottom plate 322c engaging with each other. The packaging container 310 can be folded by folding the bottom plates 322a and 322c.

  A side plate 320 is connected to the bottom plate 322a, a side plate 316 is connected to the bottom plate 322b, a side plate 314 is connected to the bottom plate 322c, and a side plate 318 is connected to the bottom plate 322d. Each of the side plates 316, 318, and 320 has a configuration similar to that of each of the side plates 16, 18, and 20. Each of the bent pieces 316a and 318a is rotatably connected to the upper ends of the side plates 316 and 318, respectively.

  The outer shape of the side plate 314 is the same as that of the side plate 14. The upper end of the side plate 14 includes a bent piece 314a that is rotatably connected to the side plate 314 over the entire length in the left-right direction. An insertion port 314b is provided at an intermediate position of the side plate 314. An opening is arranged at the center in the left-right direction of the insertion port 314b. Slits bent at intermediate positions are arranged on the left and right of the opening of the insertion port 314b.

  The main body 313 is assembled by arranging the side plates 314, 316, 318, 320 in a cylindrical shape and bonding the adhesive piece 320 b to the inner surface of the side plate 318. As shown in FIG. 10, when the main body 313 is assembled, the main body 313 is provided with a rectangular opening 313 a defined by the side plates 314, 316, 318, and 320 at the upper end in the same manner as the main body 13. It has a square tube shape at the bottom.

  A lid plate 312 is rotatably connected to the upper end side 320 a of the side plate 320. The lid plate 312 includes a fracture portion 332 at the front end portion. The breaking portion 332 is disposed in a substantially trapezoidal shape so as to surround the separation portion 332 c located at the center portion in the left-right direction of the lid plate 312. The breaking part 332 includes a plurality of slits arranged intermittently. On the lid plate 312, a pressing portion 332 a is disposed at the center position in the left-right direction of the rear end side 332 b of the breaking portion 332. The pressing part 332a protrudes in a semicircular shape from the rear end side 332b to the rear. The pressing portion 332a extends forward beyond the rear end side 332b, and is rotatably connected to a separation portion 332c surrounded by the breaking portion 332 of the lid plate 312. The pressing portion 332a is surrounded by a plurality of slits arranged intermittently except for the front end side connected to the separation portion 332c.

  An engaging piece 350 is continuously connected to the front end side of the separation portion 332c so as to be rotatable to the separation portion 332c. The engagement piece 350 is inserted into the insertion port 314b in a state where the packaging container 310 is closed.

  A reinforcing plate 352 is connected to the front end side of the lid plate 312. The reinforcing plate 352 is integrally connected to the lid plate 312. The reinforcing plate 352 is overlapped and bonded to the surface of the lid plate 312 on the main body 313 side, that is, the inner surface. The reinforcing plate 352 has a flat plate shape that overlaps substantially the entire lid plate 312. A central portion in the left-right direction of the front end portion of the reinforcing plate 352 is cut off. That is, the reinforcing plate 352 is not overlapped below the pressing portion 332a and below the peripheral portion of the separation portion 332c. In addition, the reinforcing plate 352 overlaps the entire length below the breakage portion 332 located at the periphery of the separation portion 332c. The reinforcing plate 352 is bonded to the lid plate 312 in an area other than the separation portion 332c, but is not bonded to the separation portion 332c. In the modified example, the reinforcing plate 352 may not overlap the entire length of the fractured portion 332. In this case, the reinforcing plate 352 may overlap over the entire length of the breaking portion 332 except for the end portion of the breaking portion 332. The state in which “the reinforcing plate 352 overlaps substantially the entire length of the breakage portion 332” is that the reinforcement plate 352 overlaps most of the breakage portion 332, and the reinforcement of the breakage portion 332 is less affected. Only a part of the fracture part 332 (for example, an end part of the fracture part 332) is not overlapped.

(Opening method)
Next, a method for opening the packaging container 310 will be described with reference to FIGS. As shown in FIG. 17, the user presses the pressing portion 332 a provided on the cover plate 312 of the packaging container 310 with the finger F toward the inside of the packaging container 310. As a result, the pressing portion 332a is separated from the lid plate 312 and rotates with respect to the separation portion 332c. Thereby, the user can hook the finger F inside the packaging container 310 of the separation part 332c.

  Next, as illustrated in FIG. 18, the user rotates the separation portion 332 c with respect to the side plate 314. Thereby, the fracture | rupture part 332 fractures | ruptures and the separation part 332c is cut away from the cover plate 312. As a result, the cover plate 312 excluding the separation portion 332 c is separated from the engagement piece 350 and can be rotated with respect to the side plate 320. As a result, the packaging container 310 can be opened by rotating the lid plate 312 with respect to the side plate 320 as shown in FIG.

  As mentioned above, although embodiment of this invention was described in detail, these are only illustrations and do not limit a claim. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.

(Modification)
(1) In the second embodiment, the reinforcing plates 252 and 254 are connected to the left and right ends of the lid plate 212 as shown in FIG. However, the aspect of the reinforcing plate is not limited to this. For example, as shown in FIGS. 20 and 21, a reinforcing plate 452 may be provided instead of the reinforcing plates 252 and 254. The reinforcing plate 452 may be connected to the front end side of the lid plate 212. The reinforcing plate 452 may be affixed to the lid plate 212 in the region shown in the lattice shape of FIG. Further, the reinforcing plate 452 may include folding lines 456 and 458. The folding lines 456 and 458 may be located in front of the broken portions 230 and 232.

  Alternatively, for example, as shown in FIGS. 22 and 23, a reinforcing plate 552 may be provided instead of the reinforcing plates 252 and 254. The reinforcing plate 552 may be connected to the right end side of the lid plate 212. The reinforcing plate 552 may be affixed to the lid plate 212 in the region shown in the lattice shape of FIG. Further, the reinforcing plate 552 may include folding lines 556 and 558. The folding lines 556 and 558 may be located in front of the broken portions 230 and 232.

(2) In the above embodiment, the packaging containers 10, 210, and 310 have a rectangular parallelepiped shape. However, the shape of the packaging container may be a shape other than a rectangular parallelepiped, such as a polygonal column shape other than a rectangular parallelepiped, a cylindrical shape, or the like.

(3) The position of the broken part of the cover plates 12, 212, 312 is not limited to the position of the above-described embodiment, and it is sufficient that the cover plate is arranged so as to be divided into the front and rear.

(4) In the above-described embodiment, the reinforcing plates 52 and 54 and the like are made of the same blank BL and the like as the lid plate 12 and the like. However, the reinforcing plates 52, 54, etc. may be made from a flat plate different from the lid plate 12, etc., and may be placed on the lid plate 12, etc.

  The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings achieves a plurality of objects at the same time, and has technical utility by achieving one of the objects.

10: Packaging container 12: Cover plate 13: Main body 13a: Openings 14, 16, 18, 20: Side plate 20a: Top side 22: Bottom plates 30, 32, 40, 42: Breaking portions 52, 54: Reinforcing plates 56, 58: Broken part

Claims (5)

A body with an opening;
A lid plate provided with a lid-side fracture portion in which the opening is closed and slits are intermittently disposed;
A reinforcing plate that overlaps the inner surface of the lid plate and is bonded to the inner surface,
The said reinforcement board is a packaging container arrange | positioned over the said inner surface side of the said lid side fracture | rupture part over the substantially full length of the said lid side fracture | rupture part. The lid plate is rotatably connected to an end side defining the opening of the main body,
The lid-side fractured portion includes a pair of fractured portions that incline toward the edge of the main body as they proceed from the respective ends sandwiching the edge of the lid to the center of the lid. ,
Each broken portion extends beyond the end of the main body to the side plate of the main body,
The packaging container according to claim 1, wherein the pair of broken portions are connected by the side plates. The reinforcing plate includes, for each of the pair of broken portions, a reinforcing side broken portion disposed along the broken portion at a position farther from the side plate than the broken portion,
The packaging container according to claim 2, wherein the lid plate and the reinforcing plate are bonded to each other on both the side plate side of the lid-side fracture portion and the side plate opposite to the side plate of the reinforcement-side fracture portion. The reinforcing plate is adhered to the lid plate on the side opposite to the side plate of the lid side fracture portion, and is not adhered to the lid plate on the side plate side than the lid side fracture portion,
The said reinforcement board is a packaging container of Claim 2 provided with the broken line arrange | positioned along the said fracture | rupture part in the position spaced apart from the said side plate rather than the said fracture | rupture part about each of a pair of said fracture | rupture part. The lid plate is rotatably connected to an end side defining the opening of the main body,
The lid plate includes an engagement piece connected to an end side opposite to the end side of the main body of the lid plate,
The main body passes through a side plate of the main body, and includes a through hole into which the engagement piece is inserted,
The lid-side fracture portion surrounds a separation portion that is continuous with the engagement piece in the lid plate,
2. The packaging container according to claim 1, wherein the reinforcing plate is bonded to the lid plate other than the separation portion and is not bonded to the separation portion.

Images