JP6292629B2 - Cardboard box opening retainer - Google Patents

Description

  The present invention relates to an opening maintenance tool for a corrugated cardboard box that is attached to a cover part and maintains an open state so that the cover part of the cardboard box is not naturally closed when storing the contents in the cardboard box. .

  When packing an item in a cardboard box, the lid may be folded back so as to overlap the side surface of the cardboard box so that the lid of the cardboard box does not hinder. However, the crease is naturally restored by the elastic force of the cardboard, and the lid may spread outside the cardboard box or close the opening, which may hinder the boxing operation. Further, when carrying out the boxing operation in a narrow passage or the like, if the cover part spreads outside the cardboard box, it will interfere with the passage of other workers.

  Therefore, in order to prevent the lid from closing or spreading, the lid may be stopped on the side surface with an adhesive tape, etc., but it is troublesome and troublesome, and after the work is finished, the adhesive tape is peeled off. The cardboard box may be marked, and the appearance may be deteriorated. Conventionally, various opening maintenance tools have been considered for maintaining the opening by locking the lid portion of the cardboard box in a folded state along the surface of the side surface.

  For example, an opening maintenance tool for a corrugated cardboard box disclosed in Patent Document 1 is provided with a hook portion positioned on the inner side of the box, and a hook portion that is in contact with the upper end of the corner portion of the cardboard box. A hanging body located on the outer side, and left and right restraining portions projecting in an approximately 90 ° opening angle direction sandwiching the hooking portion in both lateral directions from the lower end or near the lower end of the hanging body in a horizontal view. This corrugated cardboard opening maintaining tool is locked to a corner of a corrugated cardboard box by a hook portion, and a pair of lid portions located on both sides of the corner are pressed by left and right restraining portions to prevent the lid from closing.

  Moreover, the flap pressing clip of the corrugated cardboard box disclosed in Patent Document 2 is a plate-like body that is substantially U-shaped in a side view and includes one piece, another piece, and the top. The flap pressing clip of the cardboard box is attached to the crease edge portion between the side surface and the lid portion in a state where the lid portion of the cardboard box is superposed on the surface of the side surface, thereby suppressing the lid portion.

Japanese Patent Laid-Open No. 11-292027 Japanese Utility Model Publication No. 6-12308

  In the case of the above-described background art, the opening maintenance tool for corrugated cardboard boxes in Patent Document 1 can maintain the opening in a state where the lid of the corrugated board is bent along the surface of the side surface, but does not have other functions. . For example, there is a case where things that do not fit in the cardboard box are stacked higher than the side and temporarily placed, and each lid is held on the extension line of the side to hold it in a cylindrical shape so that the temporarily placed things do not fall down Does not have. In addition, cardboard boxes whose openings are maintained in the middle of the boxing operation may be placed one on top of the other, so that the stacked cardboard boxes do not have a function of locking so as not to collapse.

  Similarly to Patent Document 1, the clip for holding the flap of the corrugated cardboard box of Patent Document 2 maintains the opening in a state where the lid is simply bent along the surface of the side surface, and each lid is placed on the extension line of the side surface. Thus, it does not have a function of assembling into a cylindrical shape or holding the cardboard boxes with their openings open and closed.

  The present invention has been made in view of the problems of the background art described above, and has a simple structure and can reliably maintain the cover in an open state during the packaging operation of the cardboard box. It is an object of the present invention to provide a cardboard box opening maintaining tool having a function of assembling into a cylindrical shape by standing on an extension line of a side surface of the cardboard box and a function of stacking cardboard boxes in an open state vertically.

  The present invention includes an outer piece having a pair of members positioned at approximately 90 ° to each other, an upper surface continuous to the upper end portion of the outer piece, and a pair of faces facing the outer piece and continuing from the upper surface at a predetermined interval. It is an opening maintenance tool for cardboard boxes in which an inner piece having a member is provided, and an upright piece having a pair of members protruding on an extension of the outer piece is provided on the upper surface.

  The outer piece and the inner piece are plate bodies that are bent at approximately 90 ° along a fold line passing through a predetermined position, and the upper surface has an L-shape having end portions where the outer piece and the inner piece are respectively continuous. It is a plate body.

  The rising piece is a plate body that is flush with the outer piece and is bent along an extension line of the fold line.

  On the back surface of the outer piece facing the inner piece, a rib protruding toward the inner piece is integrally provided.

  A lower end portion of the inner piece opposite to the upper surface is formed longer than a lower end portion of the outer piece.

  The opening maintenance tool for the cardboard box according to the present invention has a simple structure, can reliably maintain the opening with the lid of the cardboard box being folded to the surface of the side surface, and the lid part obstructs the boxing operation. Can be prevented and work efficiency can be improved. Furthermore, it is also possible to maintain the state in which the lid is assembled in a cylindrical shape above the side surface, and support the stored items not to fall down when temporarily placing the stored items that do not fit in the cardboard box higher than the side surfaces. be able to. Further, when the cardboard boxes whose openings are maintained by folding the lid portion on the side surface are stacked one above the other, the stacked cardboard boxes can be locked so as not to collapse. And by the said function, boxing work can be made smooth and work efficiency can be improved.

It is the perspective view seen from the inner piece of the opening maintenance tool for cardboard boxes of one embodiment of this invention. It is the perspective view seen from the outer side piece of the opening maintenance tool for cardboard boxes of this embodiment. It is a top view of the opening maintenance tool for cardboard boxes of this embodiment. It is a front view of the opening maintenance tool for cardboard boxes of this embodiment. It is a perspective view which shows the use condition of the opening maintenance tool for cardboard boxes of this embodiment. It is a perspective view which shows the use condition of the opening maintenance tool for cardboard boxes of this embodiment. It is a perspective view which shows the use condition of the opening maintenance tool for cardboard boxes of this embodiment. It is the perspective view seen from the inner piece of the opening maintenance tool for cardboard boxes of other embodiments of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show an embodiment of the present invention. A cardboard box opening maintaining tool 10 of this embodiment is formed integrally with a synthetic resin, and is formed of a rectangular plate. An outer piece 12 is provided. The outer piece 12 has an upper end portion 12c positioned upward in the use state, a lower end portion 12b positioned downward in the use state and parallel to the upper end portion 12c, and a vertical connection between the upper end portion 12c and the lower end portion 12b. A pair of side edge portions 12a is formed in a rectangular shape, and is bent at about 90 ° by a fold line 14 positioned between the pair of side edge portions 12a. The outer piece 12 has a surface positioned at 90 ° across the folding line 14 as a back surface and a surface on the opposite side as a surface. The lower end portion 12 b is provided with a flange portion 16 that slightly protrudes outward from the surface of the outer piece 12 over the entire length of the lower end portion 12 b to reinforce the outer piece 12.

  An L-shaped plate-shaped upper surface 18 is provided at the upper end portion 12c of the outer piece 12 continuously at a right angle. The upper surface 18 is provided with an end portion 18a positioned outside the L-shape and an end portion 18b positioned parallel to the end portion 18a and positioned inside the L-shape, and the end portion 18a is formed on the upper end portion 12c of the outer piece 12. The end 18a of the upper surface 18 and the upper end 12c of the outer piece 12 are continuous and coincide with each other with the same length.

  At the end portion 18a of the upper surface 18, a rising plate 20 of a rectangular plate bent at 90 ° is provided so as to protrude upward. The rising piece 20 is continuous with the outer piece 12 and is bent along an extension line of the folding line 14. The rising piece 20 is a small plate whose height and width are about 1/2 to 1/3 of the outer piece 12.

  An inner piece 22 of a rectangular plate body bent at 90 ° is provided on the end 18b of the upper surface 18 so as to protrude downward, and faces the outer piece 12 at a predetermined interval. The inner piece 22 has an upper end portion 22c continuous with the end portion 18b of the upper surface 18, a lower end portion 22b positioned below and parallel to the upper end portion 22c, and perpendicular and parallel to each other connecting the upper end portion 22c and the lower end portion 22b. A pair of side edge portions 22a is formed in a rectangular shape. The inner piece 22 is bent at 90 ° by a fold line 24 passing through the middle of the pair of side edge portions 22 a, and the fold line 24 coincides with a corner portion of the end portion 18 b of the upper surface 18. The length of the inner piece 22 from the upper end portion 22c to the lower end portion 22b is longer than the length from the upper end portion 12c to the lower end portion 12b of the outer piece 12, and the length between the folding line 24 and the side edge portion 22a. Is formed shorter than the length between the folding line 14 of the outer piece 12 and the side edge 12a. The pair of surfaces separated by the fold line 24 of the inner piece 22 is slightly inclined with respect to the pair of surfaces of the outer piece 12 and is inclined so as to be separated from the outer piece 12 as the lower end portion 22b of the inner piece 22 is approached. . The fold line 24 of the inner piece 22 is also tilted away from the fold line 14 of the outer piece 12 as it approaches the lower end. Furthermore, the length of the lower end portion 22b of the inner piece 22 is slightly shorter than the length of the upper end portion 22c continuous with the end portion 18b of the upper surface 18.

  Ribs 26 are provided on the back surface of the outer piece 12. The rib 26 is a protrusion formed in parallel to the side edge portion 12 a, and the upper end portion is in contact with the upper end portion 12 c and the lower end portion reaches the vicinity of the center of the outer piece 12. The height protruding from the back surface of the outer piece 12 is the highest at the upper end and gradually decreases as it approaches the lower end, and continues to the outer piece 12 at the lower end and becomes a triangular shape.

  Next, the usage method of the cardboard box opening maintaining tool 10 of this embodiment will be described with reference to FIG. The cardboard box opening maintaining tool 10 is used to lock the cardboard box 30 with the lid 36 open. Here, the cardboard box 30 will be described. In the cardboard box 30, four side surfaces 32 separated by a crease line 31 are assembled in a square cylinder shape, and a bottom portion 34 is provided at a lower end portion of the side surface 32 to be closed. At the upper end portion of the side surface 32, a lid portion 36 is provided by being separated by a crease line 38. The lid part 36 is bent at 90 ° along the crease line 38 to close the opening.

  When putting the contents in the cardboard box 30, the lids 36 are folded outward at the crease lines 38 and overlapped on the surfaces of the side surfaces 32. And the opening maintenance tool 10 for cardboard boxes is attached to the four corners of the side surface 32 which became a square cylinder shape. The folding lines 24 of the inner piece 22 of the cardboard box opening maintaining tool 10 are inserted into the back surface of the cardboard box 30 from above along the crease lines 31 at the four corners of the cardboard box 30. At this time, the outer piece 12 of the cardboard box opening maintaining tool 10 descends along the back surface of the lid portion 36 that is folded back and becomes the outer side. The upper surface 18 comes into contact with the crease line 38 to complete the attachment. At this time, the side surface 32 and the lid portion 36 are sandwiched between the inner piece 22 and the outer piece 12 and are folded in two and locked. As a result, the crease line 38 does not spread, the lid 36 does not spread laterally away from the surface of the side surface 32, and does not close to the inside of the cylinder, so that the open state is maintained. In addition, although it is preferable to attach the opening maintenance tool 10 for cardboard boxes to each of the four corners of the cardboard box 30, it may be attached to only two places located on the diagonal line. Even when attached to only two places, one cardboard box opening maintaining tool 10 suppresses the two adjacent lid portions 36, thereby preventing them from closing. As the cardboard box opening maintaining tool 10 is inserted deeper, the lid portion 36 is tightened by the rib 26 and the opening is reliably maintained.

  After the work of inserting the contents is completed, the cardboard box opening maintaining tool 10 is pulled upward and removed. The lid portion 36 is folded at 90 ° along the crease line 38 toward the opening side to close the opening. Packing is done in normal operation using adhesive tape or rope.

  Moreover, as shown in FIG. 6, the cardboard box opening maintenance tool 10 can be respectively attached to the four corners of a plurality of cardboard boxes 30 having the same shape, and the cardboard boxes 30 can be stacked one above the other. When the cardboard box opening maintaining tool 10 is attached to the cardboard box 30, the rising pieces 20 of the cardboard box opening maintaining tool 10 are provided so as to protrude upward, and the corrugated cardboard box having the same shape inside the four rising pieces 20. The bottom portions 34 of 30 are fitted and stacked. The rising pieces 20 support the four corners of the upper cardboard box 30 and hold them so as not to collapse.

  In addition, as shown in FIG. 7, in the state where the lid portion 36 of the cardboard box 30 protrudes upward without being folded at the crease line 38 and the cylindrical body is assembled on the extension of the side surface 32, the pair of lid portions 36 are The opening maintenance tool 10 for cardboard boxes can also be attached to the corner | angular part which touches, and can also be locked. This is to support the stored items not to fall when the stored items that cannot fit in the cardboard box 30 are stacked higher than the side surface 32 and temporarily placed.

  According to the cardboard box opening maintaining tool 10 of this embodiment, the opening can be maintained with a simple structure with the lid portion 36 of the cardboard box 30 being reliably bent to the surface of the side surface 32. Can prevent the boxing work from being hindered, and work efficiency can be improved. Furthermore, the state in which the lid portion 36 is assembled in a cylindrical shape above the side surface 32 can also be maintained, and the stored items do not fall when the stored items that do not fit in the cardboard box 30 are stacked higher than the side surfaces 32 and temporarily placed. Can be supported. Further, when the cardboard boxes 30 whose openings are maintained in a state where the lid portion 36 is bent on the surface of the side surface 32 are stacked one above the other, the stacked cardboard boxes 30 can be locked so as not to collapse. Having the above three types of functions, the boxing operation can be smoothed and the working efficiency can be improved. Further, if the lid 36 spreads substantially horizontally outside the cardboard box 30, it will hinder the boxing work, and it will interfere with the actions of other workers when working in a narrow passage. Can be prevented.

  Further, since the inner piece 22 is formed longer than the outer piece 12 and protrudes downward, the folding line 24 of the inner piece 22 becomes the crease line of the cardboard box 30 when the cardboard box opening maintaining tool 10 is attached to the cardboard box 30. It can be easily inserted along the crease line 31 and can be easily attached. Further, the rib 26 slightly bites elastically into the surface of the lid portion 36 of the cardboard box 30 and securely holds it.

  The opening maintenance tool for a cardboard box according to the present invention is not limited to the above-described embodiment, and the lid 36 of the cardboard box 30 is not folded at the crease line 38 as shown in FIG. As a suitable shape for projecting and assembling the cylindrical body on the extension of the side surface 32, an opening maintenance tool 40 for cardboard boxes shown in FIG. 8 may be used. The cardboard box opening maintaining tool 40 is formed with ribs 42 that are higher than the ribs 26 along the pair of side edges 12a of the outer piece 12, and the ribs 26 and A rib 44 having a high height is formed in parallel.

  Accordingly, even when the lid portion 36 is sandwiched between the outer piece 12 and the inner piece 22 in a state where the thickness is only one of the lid portions 36, the ribs 42 and 44 are reliably pressed against and held by the lid piece 36.

  In addition, the opening maintenance tool for corrugated cardboard boxes according to the present invention can be appropriately changed in detail shape and dimensions. The material and color of the cardboard box opening retainer can be freely selected. For example, the material may be a metal other than the synthetic resin. The inner piece is formed longer than the outer piece, but may be the same length or may be shorter. The number and shape of the ribs can be freely changed, and any rib can be used as long as the side surface and the lid portion of the cardboard box are securely folded. The inner piece is inclined with respect to the outer piece, but may be parallel.

DESCRIPTION OF SYMBOLS 10 Opening maintenance tool 12 for cardboard boxes Outer piece 12b, 22b Lower end part 14 Folding line 18 Upper surface 20 Standing piece 22 Inner piece 24 Folding line 26 Rib 30 Corrugated cardboard box

Claims (1)

An outer piece having a pair of members positioned at approximately 90 ° from each other, an upper surface continuous to the upper end portion of the outer piece, and an inner side having a pair of members continuous to the upper surface and facing the outer piece at a predetermined interval A cardboard box opening maintaining tool provided with a piece and a rising piece having a pair of members protruding on an extension of the outer piece on the upper surface ;
The outer piece and the inner piece are plate bodies that are bent at approximately 90 ° along a fold line passing through a predetermined position, and the upper surface has an L-shape having end portions where the outer piece and the inner piece are respectively continuous. It is a plate body,
The rising piece is a plate that is continuous with the outer piece and is bent along an extension of the fold line,
The lower end of the inner piece opposite to the upper surface is formed longer than the lower end of the outer piece, and the length between the fold line and the side edge of the pair of inner pieces is the same as that of the outer piece. It is formed shorter than the length between the fold line and the side edge,
On the back surface of the outer piece facing the inner piece, a rib protruding toward the inner piece is integrally provided, and the rib is a ridge formed in parallel to the side edge portion. Yes, the upper end of the rib is in contact with the upper end portion, and the height protruding from the back surface of the outer piece is a triangular shape that gradually decreases as the upper end is the highest and approaches the lower end,
The pair of surfaces separated by the fold line of the inner piece is slightly inclined with respect to the pair of surfaces of the outer piece, and is inclined so as to be separated from the outer piece as the lower end portion of the inner piece is approached. cardboard box opening device for maintaining, characterized in that there.

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