JP3602508B2 - Packaging box - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a tray-shaped packaging box for storing, for example, a product containing jelly food in a cup.
[0002]
[Prior art]
As shown in FIG. 11, this type of packaging box includes a tray-shaped box body 100 and a separate lid 108. The box body 100 has an upper end opening in which side walls 102a, 102b, 102c, and 102d are erected from an edge of a rectangular bottom wall 101, respectively. The opposing side walls 102a and 102c are formed in a two-layer structure having an inner wall portion 103 and an outer wall portion 104, and an insertion hole 106 is formed in a continuous portion 105 at the upper end for connecting the inner wall portion 103 and the outer wall portion 104. Is provided. In addition, a crosspiece 107 is provided on the other side walls 102b and 102d so as to cover a part of the upper surface of the adjacent side walls 102a and 102c. The lid 108 has a shape that closes the opening between the two crosspieces 107, and a locking tongue piece 109 having a locking claw 109a protruding outward is provided on an edge corresponding to the insertion hole 106. Is provided.
[0003]
In this packaging box, after a product is housed in a predetermined arrangement inside the box main body 100, a locking tongue piece 109 is inserted and locked in the insertion hole 106, and a lid 108 is arranged, whereby The upper end opening of the box body 100 can be closed so that dust and the like do not enter.
[0004]
[Problems to be solved by the invention]
However, there is a step of opening the lid 108 and confirming the contents of the packaging box before the commodity is stored and before the final user who is the purchaser. Then, in order to open the lid 108, for example, it is necessary to apply a little force to the edge of the finger near the edge of the locking tongue piece 109 and open it while applying a slight force. is there. This problem becomes more prominent because workability is performed while wearing gloves. Also, in the operation of attaching the lid 108 to the box body 100, the operation of positioning the locking tongue 109 in the insertion hole 106 is very difficult.
[0005]
In view of the above, an object of the present invention is to provide a tray-shaped packaging box having good lid opening / closing operability.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a packaging box of the present invention includes a box body having an upper end opening in which a side wall is erected from an edge of a bottom wall, and a lid closing an upper end opening of the box body. At least one side wall is formed in a two-layer structure having an inner wall portion and an outer wall portion, an insertion hole is provided in a continuous portion that connects the inner wall portion and the outer wall portion, and the lid corresponding to the insertion hole is provided. In the packaging box provided with a locking tongue having a locking claw projecting outward at an edge of the packaging box, the outer wall portion is configured to lock the locking tongue from the bottom wall located below a lower edge of the locking tongue. An opening operation groove is provided which extends vertically toward the insertion hole located above the lower end edge of the tongue piece .
[0007]
According to the packaging box, by inserting a finger into the opening operation groove, the lower edge of the locking tongue can be operated with the finger. Therefore, the opening workability of the lid can be improved. Further, since the side wall provided with the insertion hole and the opening operation groove is formed in a two-layer structure having an inner wall portion and an outer wall portion, the interior is not exposed by providing the opening operation groove. .
[0008]
In the packaging box, it is preferable that a positioning groove continuous with the opening operation groove and the insertion hole and substantially matching a lower shape of the locking tongue is provided on the outer wall portion. With this configuration, the locking tongue piece of the lid can be easily positioned at a predetermined position on the outer wall corresponding to the insertion hole, so that the closing workability can be improved.
[0009]
In this case, it is preferable that the insertion hole is provided with an oblique side portion that extends outward from an inner wall portion toward an end of the positioning groove provided in the outer wall portion. With this configuration, when closing the box main body with the lid, the oblique side provided in the insertion hole of the box main body and the side edge of the locking tongue provided in the lid slide while sliding. The locking tongue is inserted and locked. Therefore, it is possible to suppress damage due to the insertion and removal of the locking tongue piece from the insertion hole.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show a packaging box according to a first embodiment of the present invention. As in the conventional case, this packaging box has a tray-shaped box body 1 having an upper end opening with side walls 3a, 3b, 3c, and 3d standing upright from the edge of the bottom wall 2, and another box closing the upper end opening of the box body 1. And a body lid 22.
[0011]
The box main body 1 and the lid 22 are punched out of corrugated paperboard in which a corrugated middle sheet is disposed between a pair of cover and back papers in a developed state shown in FIGS. By bending and locking a predetermined portion, it is possible to assemble without gluing an adhesive tape or hot melt.
[0012]
Specifically, as shown in FIG. 4A, the box body 1 in the unfolded state includes a bottom wall 2 having a substantially square shape, and the side walls 3a to 3d are provided at an edge of the bottom wall 2. .
[0013]
2, the upper and lower side walls 3a and 3c include an outer wall portion 4 continuous with the bottom wall 2, a continuous portion 5 continuous with the outer wall portion 4, and an inner wall portion 6 continuous with the continuous wall portion 5. Consists of At the boundary between the bottom wall 2 and the outer wall 4, the boundary between the outer wall 4 and the continuous part 5, and the boundary between the continuous part 5 and the inner wall 6, a folding curve 7 formed by compressing the wall thickness is provided. Has been.
[0014]
As in the prior art, the continuous portion 5 has a rectangular insertion hole 8 at the center thereof, and a pair of slits 9 on both sides of the insertion hole 8. Further, on both sides of the continuous portion 5, there are provided beam retaining holes 10 extending to the continuous outer wall portion 4, and slits 11 are provided on the inner edges of the beam retaining holes 10. Furthermore, locking projections 12 are provided on both sides of the distal end edge of the inner wall portion 6, and locking grooves 13 are provided at corresponding positions on the bottom wall 2. Furthermore, a folding portion 14 is provided on both side edges of the outer wall portion 4, and a folding curve 15 similar to the above is provided at the boundary.
[0015]
In the present embodiment, as shown in FIG. 4B, an opening operation groove 16 of a lid 22 and a positioning groove 17 for closing operation, which will be described later, are provided at the center of the outer wall portion 4. I have. The opening operation groove 16 extends vertically from the bottom wall 2 below the lower end of the locking tongue 23 of the lid 22 to the insertion hole 8 above the lower end of the locking tongue 23. It extends. The positioning groove 17 is continuous with the insertion hole 8 and the opening operation groove 16 and has a shape that substantially matches a lower shape of a locking tongue piece 23 to be described later, and is opened widely.
[0016]
As shown in FIG. 4 (A), a bar 18 is provided at the tip of each of the side walls 3b and 3d located on the left and right sides of the bottom wall 2, and a boundary between them is similar to the above. A folding curve 19 is provided. The bar 18 covers a part of the adjacent side walls 3a and 3c and improves the strength of the box body 1 as in the prior art. An engaging portion 20 having a stop claw 20a is provided, and a fold curve 21 is provided at the boundary.
[0017]
As shown in FIG. 5A, the lid 22 has a shape that closes an opening between the pair of bars 18. As shown in FIG. 5 (B), a locking tongue 23 having a pair of locking claws 23a protruding outward is provided at an edge corresponding to the insertion hole 8, and at a boundary thereof. A folding curve 24 is provided. Further, in the present embodiment, an arc-shaped notch 25 is formed at the lower end of the locking tongue 23 so as to follow the belly of the operator's finger.
[0018]
In assembling the box body 1 in the packaging box having the above-described configuration, first, the outer wall portion 4, the continuous portion 5, and the inner wall portion 6 of the side walls 3a and 3c forming a two-layer structure are bent along the folding curve 7, respectively. The locking projection 12 provided on the portion 6 is inserted and locked into the locking groove 13 of the bottom wall 2. Next, after the fold 14 connected to the outer wall 4 is bent inward along the fold curve 15, the side walls 3 b and 3 d and the crosspiece 18 are bent along the fold curve 19. Thereafter, the locking portion 20 continuous with the bar 18 is bent along the folding curve 21 and inserted and locked in the corresponding bar locking hole 10. This makes it possible to assemble the tray-shaped box body 1 having an open upper end without using a fixing means such as an adhesive tape or a hot melt.
[0019]
The assembled box body 1 has a tray shape with an open upper end. Opposing side walls 3a and 3c have a two-layer structure, and a bar 18 is formed on the other opposing side walls 3b and 3d. Therefore, the occurrence of torsion and the like is suppressed, and the structure is strong. The side walls 3a, 3c are formed with an opening operation groove 16, a positioning groove 17, and an insertion hole 8 which are continuous with the outer wall 4, but the inner wall 6 is formed therein. The interior for containing the goods is completely closed.
[0020]
Then, after closing the upper end opening of the box main body 1 with the lid 22 after the products are stored in a predetermined arrangement inside the box main body 1, first, the locking tongue piece 23 is attached to the lid 22. In order to be able to bend with a finger, both sides on which the locking tongue pieces 23 are formed are gripped so as to be sandwiched.
[0021]
Next, the locking tongue piece 23 of the lid 22 is bent downward along the folding curve 21 so that the lower inner surface of the locking tongue piece 23 contacts the outer surface of the outer wall portion 4 of the double side walls 3a, 3c. The lid 22 is slid substantially horizontally toward the positioning groove 17 in this state.
[0022]
As a result, when the lower portion of the locking tongue 23 coincides with the positioning groove 17, the locking tongue 23 is positioned in the insertion hole 8 through the positioning groove 17, and is in a non-slidable state. Position.
[0023]
Thereafter, by pushing down the lid 22 downward, the locking tongue piece 23 is inserted and latched into the insertion hole 8, and the upper end opening between the two bars 18 is closed by the lid 22.
[0024]
In this state, as shown in FIG. 3, the center of the outer wall portion 4 is cut out as described above, but the inner portion for accommodating the product is not exposed by the inner wall portion 6. Further, as shown in the drawing, the locking tongue piece 23 of the lid 22 is exposed inside the opening operation groove 16.
[0025]
Next, when checking the stored goods by opening the lid 22 of the packaging box, first, the user grips the substantially central portions of the side walls 3a and 3c of the box main body 1 from both sides and opens the finger. It is located in the groove 16.
[0026]
When the finger is positioned in the opening operation groove 16, the belly of the finger is positioned at the lower end edge of the locking tongue 23 of the lid 22, and the locking tongue 23 is pushed upward by the finger. Thereby, the locking tongue piece 23 of the lid 22 is pulled out from the insertion hole 8, and the lid 22 can be removed to open the box body 1.
[0027]
As described above, in the packaging box of the present embodiment, since the opening operation groove 16 extending in the vertical direction of the lower end edge of the locking tongue piece 23 in the lid body 22 is provided, the position of the locking tongue piece 23 can be visually checked. Without confirmation, the lid 22 can be opened easily and surely even by groping work.
[0028]
Also, in the box body 1 in the assembled state, the inner wall portion 6 is positioned by inserting and locking the locking projection 12 into the locking groove 13 at both sides away from the opening operation groove 16. Its central portion can be elastically bent inward. Therefore, in the operation of pushing up the locking tongue piece 23, the operator presses the inner wall portion 6 with a finger to elastically deform the inner wall portion 6 so that the operator operates the edge of the locking tongue piece 23 of the lid 22 at the center of the finger pad. It is possible to do. Furthermore, since the notch 25 in the shape of an arc is formed at the lower end edge of the locking tongue piece 23, it can be fitted to the shape of a finger pad. Therefore, by performing a plurality of opening operations, it is possible to prevent the operator's finger from feeling pain.
[0029]
Moreover, since the box body 1 is provided with the positioning groove 17 which is continuous with the insertion hole 8 in the outer wall portion 4, the position of the insertion hole 8 is not visually confirmed as in the case of the opening work. Even when groping, the lid 22 can be closed easily and reliably.
[0030]
6 to 9 show a packaging box according to the second embodiment. This packaging box includes the box body 1 and a separate lid 22 as in the first embodiment.
[0031]
As shown in FIGS. 7 and 8A and 8B, the box body 1 of the second embodiment has a positioning groove 17 provided on the one side edge of the insertion portion from the inner wall portion 6 to the outer wall portion 4. An oblique portion 26 is provided which is inclined outward and expands toward the end. In the second embodiment, no slits 9 are provided on both sides of the insertion hole 8.
[0032]
As shown in FIGS. 7 and 9A and 9B, the locking claw 23a is provided only on the side edge of the locking tongue piece 23 corresponding to the oblique side 26, as shown in FIGS. Has been. The locking claw 23a is provided with an inclined portion 23b that is inclined downward and outward. In the locking tongue piece 23, the side edge where the locking claw 23a is not provided is a tapered slope 23c. Further, the locking tongue piece 23 has the bent curve 21 inclined such that the side of the locking claw 23a approaches the side of the inner wall portion 6. In the second embodiment, an arc-shaped notch 25 is not provided at the lower end of the locking tongue piece 23.
[0033]
In the packaging box according to the second embodiment, when closing the upper end opening of the box body 1 with the lid 22, as in the first embodiment, the both side edges of the lid 22 provided with the locking tongue pieces 23. In the gripped state, the locking tongue piece 23 is positioned in the positioning groove 17 of the box body 1, and then the lid 22 is pushed downward.
[0034]
Then, the inclined portion 23c of the locking tongue piece 23 not provided with the locking claw 23a abuts on the edge of the insertion hole 8 not provided with the oblique side portion 26, and the inclined side edge of the locking claw 23a is inserted. It contacts the oblique side 26 of the hole 8. When the lid 22 is pushed down, the locking tongues 23 are inserted and locked into the inside from the insertion holes 8 while the respective contact portions slide.
[0035]
When the locking tongue piece 23 of the lid 22 is completely inserted into the insertion hole 8, the locking tongue piece 23 is moved to the side of the inner wall portion 6 having a large closed area by the inclined bent curve 21. To position. Therefore, the closed state of the box body 1 and the lid 22 by inserting and locking the locking tongue piece 23 into the insertion hole 8 can be reliably maintained.
[0036]
On the other hand, when removing the lid 22 from the box main body 1 and opening the same, the finger is inserted into the opening operation groove 16 and the lower end edge of the locking tongue piece 23 is put on the belly of the finger as in the first embodiment. Push up.
[0037]
Then, the inclined portion 23b provided on the locking claw 23a comes into contact with the oblique side portion 26 of the insertion hole 8, and the locking claw 23a moves to the side of the widely opened positioning groove 17 along these inclinations, and the locking is performed. The tongue piece 23 is pulled out from the insertion hole 8, and the lock is released.
[0038]
As described above, in the packaging box of the second embodiment, the position of the locking tongue piece 23 and the position of the insertion hole 8 are determined by the opening operation groove 16 and the positioning groove 17 provided in the box body 1 as in the first embodiment. The opening and closing operation of the lid 22 can be easily and reliably performed even by groping work without visually confirming the position.
[0039]
In addition, in the second embodiment, since the oblique side portion 26 is provided in the insertion hole 8, when closing with the lid 22, damage to the insertion hole 8 and the locking tongue piece 23 accompanying the insertion work is prevented. Can be suppressed. Moreover, since the locking tongue piece 23 is provided with the inclined portion 23b, the damage of the insertion hole 8 and the locking tongue piece 23 due to the extraction operation can be suppressed when the lid 22 is opened. As described above, it is possible to prevent the locking tongue pieces 23 from being inserted into or removed from the insertion hole 8 due to the opening / closing operation of the lid body 22, so that damage to these pieces can be suppressed. Can be prevented.
[0040]
The packaging box of the present invention is not limited to the configuration of the above embodiment.
For example, in each of the above embodiments, the box body 1 and the lid 22 are configured separately, but may be configured integrally as shown in FIG. Here, this packaging box has a two-layer structure in which, of the four side walls 3a to 3d, only the side wall 3a opposed to the side wall 3c having the lid 22 connected thereto has the inner wall part 6 and the outer wall part 4, and 3a to 3d are integrally assembled by gluing the margin portion 27 formed on the pair of side walls 3a, 3c to the side walls 3b, 3d by hot melt. The same action and effect as described above can be obtained with the packaging box configured as described above.
[0042]
Further, the opening operation groove 16 and the positioning groove 17 need not necessarily be formed so as to be continuous as in the above-described embodiment. That is, the upper end of the opening operation groove 16 is a position at which the lower edge of the locking tongue piece 23 can be pushed up to raise the edge of the raised lid 22 to a position where it can be easily operated with the pad of a finger. Just fine.
[0043]
【The invention's effect】
As apparent from the above description, in the packaging box of the present invention, since the outer wall portion has the opening operation groove extending in the vertical direction of the lower end edge of the locking tongue, a finger is inserted into the opening operation groove. Thereby, the lower edge of the locking tongue can be operated with a finger, and as a result , the opening workability of the lid can be improved.
[0044]
Further, since the outer wall portion is provided with a positioning groove substantially matching the lower shape of the locking tongue, the locking tongue of the lid can be easily positioned at a predetermined position on the outer wall portion. As a result, the closing workability can be improved.
[0045]
Therefore, in the packaging box of the present invention, the opening operation groove and the positioning groove provided in the box main body make it possible to easily and reliably find the position of the locking tongue and the position of the insertion hole without any visual check. The lid can be opened and closed.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a packaging box of a first embodiment.
FIG. 2 is an enlarged perspective view of a main part of FIG.
FIG. 3 is a front view of a main part in a state where a lid is placed.
FIG. 4A is a plan view showing the box main body in an unfolded state, and FIG. 4B is an enlarged plan view of a main part of FIG.
5A is a plan view showing a cover in an unfolded state, and FIG. 5B is an enlarged plan view of a main part of FIG.
FIG. 6 is an exploded perspective view showing a packaging box according to a second embodiment.
FIG. 7 is an enlarged perspective view of a main part of FIG. 6;
8A is a plan view showing the box main body in an unfolded state, and FIG. 8B is an enlarged plan view of a main part of FIG. 8A.
9A is a plan view showing the cover in an unfolded state, and FIG. 9B is an enlarged plan view of a main part of FIG. 9A.
FIG. 10 is a perspective view showing a packaging box of a modified example.
FIG. 11 is a perspective view showing a conventional packaging box.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... box main body, 2 ... bottom wall, 3a-3d ... side wall, 4 ... outer wall part, 5 ... continuous part, 6 ... inner wall part, 8 ... insertion hole, 16 ... opening operation groove, 17 ... positioning groove, 18 ... Crosspiece, 22: lid, 23: locking tongue, 23a: locking claw, 23b: inclined portion, 26: oblique side.

Claims (3)

A box body having an upper end opening with a side wall standing from the edge of the bottom wall; and a lid closing the upper end opening of the box body, wherein at least one side wall of the box body has an inner wall portion and an outer wall portion. An engagement hole formed in a layered structure and provided with an insertion hole in a continuous portion that connects the inner wall portion and the outer wall portion, and a locking claw that protrudes outward at an edge of the lid corresponding to the insertion hole. In a packaging box provided with a tongue piece,
An opening operation groove extending vertically from the bottom wall located below the lower edge of the locking tongue to the insertion hole located above the lower edge of the locking tongue on the outer wall. A packaging box comprising: 2. The packaging box according to claim 1, wherein a positioning groove that is continuous with the opening operation groove and the insertion hole and substantially matches a lower shape of the locking tongue piece is provided on the outer wall portion. 3. The packaging box according to claim 2, wherein the insertion hole is provided with an oblique side portion extending outward from an inner wall portion toward an end of the positioning groove provided in the outer wall portion.

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