JP2009149310A - Paper box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a paper box capable of keeping a lid plate in an upright attitude when necessary and easily handled by preventing a lid plate from causing hindrance to taking out of granular sweets or the like. <P>SOLUTION: As a lid plate body 10 is pulled upward, a closing plate 15 located at a take-out opening 16 rotates and the downward movable part 18 of the closing plate 15 turns toward the inside of the box. The downward movable part 18 makes slide contact with and moves to the projection 24 of the take-out opening 16. The upright attitude of the lid plate body 10 is maintained by the locking of the downward movable part 18 and the projection 24 due to unfolding. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a paper container in which a lid that opens and closes an outlet for stored items can be maintained in an open state as necessary.

  2. Description of the Related Art Conventionally, a container that opens and closes an outlet with a lid member is known as a storage body that stores a plurality of small articles. And in a confectionery container etc. made into a product form that can hold and hold a plurality of grain confectionery and individually packaged confectionery, when taking out the contents one by one, the outlet is not disturbed by the lid member If it is opened as needed, it will be easy to take out, so in a paper box assembled with a single blank, it is possible to maintain the standing state of the cover plate that can open and close the outlet as necessary What has been proposed is proposed.

For example, as shown in Patent Document 1 and Patent Document 2, such a paper box for packaging is connected to the upper plate, the side plate, and the bottom plate at both ends of the box body portion including the upper plate, the side plate, and the bottom plate. The box body is formed in a rectangular parallelepiped shape by overlapping the flaps, and the cover plate is overlaid on the upper surface where the outlet is located. The cover plate covers the outlet in an openable and closable manner, and there is a paper box (Patent Document 2) in which the outlet is previously formed on the upper surface, and the upper plate is a closing plate that is partitioned by a cut line. A paper box that is closed, and the cut line is broken by the trigger of the lid plate, and the closure plate is caused together with the lid plate to separate from the outlet, so that an open outlet is formed (Patent Document 1) There is also.
Then, in order to maintain the standing state of the lid plate, a lid plate support portion for adhering and fixing the lid plate to the upper surface of the upper plate, and the lid plate support portion are connected to each other via a fold rule to center the crease rule. And a projecting piece projecting from the folding line position to the lid plate support part side is continuously provided on the lid plate body without the folding line. Further, the lid plate body is raised from the upper plate and manually rotated in the opening direction around the crease, and the protruding piece pushes down the upper surface of the upper plate and rotates on the upper plate, thereby removing the outlet. When the lid plate body is moved backward, the upper plate that has not been pushed down from the protruding piece returns to the original position, and the protruding piece rides on the upper plate at the position of the crease. The protruding piece comes into contact with the upper plate under the action of folding back, and the protruding piece does not move unless the lid plate is manually rotated in the closing direction. It was intended to be maintained.
Japanese Patent Laid-Open No. 11-321855 Japanese Patent No. 3960514

However, in the above-described conventional paper box, since the tip of the projecting piece is in sliding contact with the upper surface of the upper plate when the lid plate body is rotated, the lid plate can be rotated with a moderate force and the lid plate. It is very difficult to obtain a paper box that can stably stand up as necessary because conditions such as paper thickness, paper hardness, and slipperiness of the upper surface of the upper plate must be taken into consideration.
Therefore, at present, the length of the projecting piece is increased so that the tilted state can be reliably maintained at the initial opening of the cover plate at the expense of a certain degree of rotational operability of the cover plate. If the lid plate is rotated repeatedly, the tip of the protruding piece will be crushed early, or the protruding piece will be bent, and the cover plate will not be kept upright, but will be put on the take-out side and the cover plate will be used to remove the contents. There was a problem of getting in the way.
Therefore, in view of the above circumstances, the present invention slidably contacts the protruding piece of the cover plate on the upper surface of the upper plate and moves it to the outlet side, and keeps the protruding plate in contact with the upper surface of the upper plate to keep the cover plate standing. The objective is to obtain a paper box that is easy to handle without taking the cover plate out of the way when taking out confectionery, etc. To do.

  The present invention has been made in consideration of the above problems, and is a paper box for packaging contents such as confectionery, and a cover plate that is overlaid on the upper plate of the box body portion composed of an upper plate, a side plate, and a bottom plate. The upper plate is provided with an outlet having a shape corresponding to the shape of the closing plate, which is covered with a closing plate defined by a cutting line and can be opened by the breaking of the cutting line caused by the closing plate. The lid plate includes a lid plate support portion and a lid plate body connected to the lid plate support portion via a crease and rotatable about the crease, and the lid plate support of the lid plate The portion is attached to the upper plate excluding the closing plate, and the lid plate main body is attached to the closing plate, and the cutting is performed by turning around the crease that causes the lid plate main body from the upper plate. In the paper box where the wire breaks and the closing plate is raised to open the outlet The folding ruler is disposed on the closing plate in a positional relationship intersecting with the cut line that defines the closing plate, and the closing plate is located at a position corresponding to the folding rule. A hook-like line portion, which is composed of a lifting portion and a descending portion, is provided in the vicinity of the folding line of the cut-out line on the periphery of the lifting portion, and the cut-out line is convex toward the closing plate center side. A notch corresponding to the shape of the hook-shaped line part is formed on the closing plate with the boundary as a boundary, and a convex part corresponding to the shape of the hook-shaped line part is formed continuously around the outlet, The rotation of the closing plate about the folding ruled with the rotation of the opening direction causing the lid plate main body separates the convex portion of the outlet and the notch of the closing plate, and the folded ruled The lower part of the closing plate at the center is the area corresponding to the lifting part at the outlet. Rotating towards the side, the descending part moves in sliding contact with the side edge of the convex part of the outlet, and turns toward the descending part corresponding region side of the outlet by folding back of the crease part The above-mentioned problem is solved by providing a paper box that is configured so that the standing state of the lid plate body with the closing plate is maintained by the engagement of the descending portion and the convex portion. To do.

  In the present invention, a protruding piece protruding from the side of the lid plate body on the lid plate support portion side to the lid plate support portion side is cut and formed by a cut continuous with the crease, and the projection piece is formed on the lid plate body. The lid plate is provided so as to be able to slidably come into contact with the inner edge of the area corresponding to the descending portion of the outlet as the opening direction of the door is rotated, and to rotate in the opening direction of the lid plate body. When the main body is opened, it is preferable that the side edge of the protruding piece and the inner edge of the exit corresponding area of the outlet are in contact with each other.

  In the present invention, the protruding piece overlaps the descending portion of the closing plate, from the descending portion corresponding region of the take-out port accompanying the rotation of the lid plate body in the opening direction to the lifting portion corresponding region side. It is preferable that the descending part of the closing plate is pressed toward the lifted part corresponding region side of the outlet by the rotation of.

  In the present invention, it is preferable that the protruding pieces are provided corresponding to both end portions of the descending portion of the closing plate.

(Effect of the invention of claim 1)
According to the first aspect of the present invention, the descending part of the closing plate is rotated so as to turn around the inside of the box toward the lifting part corresponding region side of the outlet by the pivoting in the opening direction for pulling up the lid plate body, and the descending part is removed. The sliding part moves in sliding contact with the side edge of the convex part of the exit, and the convex part is locked with the descending part that rotates toward the descending part corresponding area side of the outlet by the folding back of the crease part. The standing state of the lid plate body with the plate is maintained.
That is, the convex part on the side of the outlet is engaged with the descending part that moves to the lifting part corresponding region of the outlet by rotation about the position of the folding plate of the closing plate. The descending part that has been moved to the position where it can be locked and has passed through the locking position with the convex part is moved away from the convex part by the rotation of the lid plate body in the closing direction by the restoring force of the crease part of the lid plate body. The lid plate body can be maintained in an upright state by a simple operation of pulling up the lid plate body and locking the descending portion to the convex portion by folding back the crease part. . And since the part which interferes with a convex part when the said descending part rotates is only a side edge with the very small area of the convex part, it becomes difficult to produce a bending and a crush in a descending part. Further, since the convex portion itself has only to be locked to the descending portion that returns by the folding, it is not necessary to make the convex portion particularly large. Further, it is possible to suppress bending and crushing of the descending portion when it comes into sliding contact with the convex portion.

The present invention further has the following effects. For example, in a confectionery box, grain confectionery containing oil and fat may be stored in a paper box, and glassine paper is placed on the inner bottom surface and inner surface of the box, and the oil and fat moves to the packaging material of the paper box and the box surface side It prevents it from oozing out. In addition, it is performed that glassine paper is placed on the contents inside the box to prevent the oil and fat from moving to the inner top side. However, if glassine paper is positioned on the upper plate side of the paper box, the glassine paper will get in the way when removing the contents from the outlet on the upper plate, while the outlet is open when the glassine paper is not used. It becomes easy for the fats and oils in the contents to be transferred to the cover plate covering the.
In addition, in the confectionery box, the box was made using a packaging material coated with an oil-resistant resin on the inner surface of the box, and the coating layer located on the inner surface of the box stopped oil from the stored items. There is also a paper box. However, a paper box having a structure in which a cut perforation is formed in the upper plate of the box body and the lid is opened by breaking the cut perforation to obtain an outlet, or a previously opened outlet is covered from above. In a paper box with a structure in which the outlet is revealed by opening the cover plate, the cut end surface of the cut perforation and the inner peripheral end surface of the outlet are in a state where the coating layer is cut, Is exposed inside the box. Therefore, there is a possibility that the above-mentioned oil and fat may permeate into the exposed end surface, and the oil stain may appear on the outer surface of the box from the position of the cut perforation, or the oil stain may spread widely around the outlet.

  On the other hand, according to the present invention, the top surface portion of the paper box has a double structure in which the upper plate and the cover plate, which are closed with the closing plate, are overlapped. For this reason, even if the fats and oils in the contents are transferred directly to the upper plate, the fats and oils do not move up to the cover plate on the upper plate, preventing oil and fat from seeping out on the outer surface of the paper box. However, there is no problem with the upper plate due to the cutting of the coating layer with the oil-resistant resin at the cut line portion. In addition, it is not necessary to cover the container with another sheet for suppressing the transfer of the oil and fat, and when the container is taken out from the take-out port, the other sheet placed on the container is not obstructed.

(Effect of the invention of claim 2)
According to the second aspect of the present invention, since the protruding piece provided on the lid plate main body comes into contact with the inner edge of the descending portion corresponding area when the lid plate main body is in the standing state, In order to suppress the fall of the lid plate body due to the return, the restraint is assisted, and the standing state of the lid plate body can be further stabilized.
And in order to maintain the standing state of the cover plate body by the locking of the descending portion with respect to the convex portion and the contact with the inner edge of the descending portion corresponding region of the protruding piece, the degree of locking of the convex portion with respect to the descending portion is increased so much. There is no need, and the protrusion length of the protrusion itself can be made shorter.

(Effect of the invention of claim 3)
According to the invention of claim 3, when the lid plate body is rotated in the opening direction, the projecting piece is applied to the descending portion and presses the descending portion, so that the descending portion is a side edge of the convex portion. When slidably touching, the position of the convex portion is simplified and reliably passed.

(Effect of the invention of claim 4)
According to the invention of claim 4, both ends of the descending portion can be reinforced by overlapping the protruding pieces, and bending and collapse of the descending portion due to sliding contact with the convex portion can be further prevented.

Next, the present invention will be described in detail based on the embodiment shown in FIGS.
In the figure, reference numeral 1 denotes a paper box, and the paper box 1 is formed from a single blank shown in FIG. 2, and the box body portion is formed by the connected top plate 2, side plate 3, and bottom plate 4 shown by the blank. Is formed, and the ends of the box barrels facing each other in the longitudinal direction of the box are closed by overlapping the flaps 5 connected to the component plates of the box barrel to store a plurality of items such as grain confectionery. It is a flat rectangular parallelepiped.
In the illustrated example, one end of the box body is closed by overlapping flaps 5 connected to the top plate 2, the side plate 3, and the bottom plate 4, respectively, and the other end of the box body is formed. Is closed by folding the flap 5 connected to the side plate 3, overlapping the insertion type flap 5 connected to the bottom plate 4, and inserting the tip of the flap 5 into the box body. Reference numeral 6 represents a margin for pasting the body.

(Cover plate)
Further, in this paper box 1, a cover plate 7 is connected to a part of one side plate 3 and is superimposed on the upper surface of the upper plate 2. The lid plate 7 includes a lid plate support portion 8 bonded to the upper plate 2, and a lid plate body 10 connected to the lid plate support portion 8 via a crease 9, and the lid plate support portion Only 8 is connected to one side plate 3 so that the lid plate main body 10 can rotate around the folding ruled line 9 as will be described later.
Further, a sticking piece 11 superimposed on one end of the box main body (one end of the box body) is connected to the side of the lid main body 10 opposite to the lid support portion 8. A portion defined by a pair of cut perforations extending from the center of the lower side of the sticking piece 11 to both ends of the side (upper side) on the lid plate body connecting side is defined as a knob portion 12, and the knob portion 12 is formed on the lid plate body 10. While being connected, the part located in both sides via the cut perforation of the knob | pick part 12 is affixed on the one edge part of a box main body.
That is, by raising the knob portion 12 from the sticking piece 11 so as to cut the cut perforation, the knob portion 12 is connected to only the lid plate body 10, and the lid plate body 10 is pulled up or down while holding the knob portion 12. You can.

(Clip of cover plate)
Further, the crease 9 located between the lid plate support portion 8 and the lid plate body 10 in the lid plate 7 is discontinuous as shown in the figure, and the lid is formed in a direction perpendicular to the longitudinal direction of the box body portion. It is located at three locations on the side of the plate 7 (side plate side) and the center side.
A projecting piece 13 protruding from the side on the lid plate support portion 8 side toward the lid plate support portion 8 is continuous with the lid plate main body 10 that rotates as described below about the folding ruled line 9. The projecting piece 13 is located at a discontinuous portion of the crease 9 and is formed by being cut into the crease 9 continuously. As described above, these two protrusions 13 are continuous with the cover plate body 10 and protrude toward the cover plate support portion 8 in a direction intersecting the direction of the crease. If the piece 13 rotates in the direction that causes the lid plate body 10 to be centered on the crease 9 (rotation in the opening direction of the lid plate body), it turns around toward the inner side of the box body. Rotate.
Of course, if the lid plate body 10 is turned in the direction of falling to the upper plate 2 side and falls, the two projecting pieces 13 are flush with the lid plate support portion 7.

(Upper plate)
The upper plate 2 in the box body portion is provided with a closing plate 15 partitioned into a substantially rectangular shape by a cut line 14, and an outlet 16 having a shape corresponding to the shape of the closing plate 15 is provided in the closing plate 15. Covered with. That is, if the cut line 14 is broken and the closing plate 15 is completely removed from the upper plate 2, for example, an opening having an opening shape corresponding to the shape of the closing plate 15 is obtained. It is.
As described above, the upper plate 2 has the outlet 16 closed by the closing plate 15 defined by the cut line 14, and the lid of the lid plate 7 stacked on the upper surface side of the upper plate 2. By pulling up the plate body 10, the closing plate 15 is caused to accompany the lid plate body 10. In order to cause the closing plate 15 to be raised, first, the region near the folding line 9 side of the lid plate support portion 8 including the projecting piece 13 is not adhered to the upper plate 2, and the other lid plate support portions 8 is bonded to the upper plate 2 as described above. Further, the lid plate body 10 is bonded only to the closing plate 15, and the knob portion 12 is raised from the sticking piece 11, and the lid plate body 10 is rotated around the crease 9 with the knob portion 12. By pulling up so as to move, the cut line 14 is broken, the closing plate 15 is also rotated around the folding line 9, and the lid plate main body 10 is opened and the outlet 16 is opened. .

(Closing plate)
In the closing plate 15 that is accompanied by the rotation of the lid plate body 10, most of the closing plate 15 is directed upward of the box body when the lid plate body 10 is turned in the opening direction. The folding line 9 is rotated around the folding line 9 so as to be caused by the rotation, and the folding line 9 is rotated around the folding line 9 so that the remaining part wraps around the inside of the box body.
In order to be able to rotate the closing plate 15 around the folded rule 9, the positional relationship between the closing plate 15 and the folded rule 9 is as follows. In other words, the folding ruler 9 is arranged on the closing plate 15 in a positional relationship that intersects the two-wire portion 14a along the box length direction of the cut line 14 at a right angle. The closing plate 15 is divided into a lifting portion 17 where the lid plate body 10 overlaps and a descending portion 18 where the lid plate support portion 8 overlaps with a crease corresponding part a corresponding to the position where the crease 9 passes. Is done. The outlet 16 is also divided into a lifting portion corresponding region 19 where the lifting portion 17 is located and a descending portion corresponding region 20 where the descending portion 18 is located.
The lifting portion 17 in the closing plate 15 has a non-adhesive portion 21 that is non-adhered to the lid plate main body 10 on the crease-corresponding portion a side, and the portions other than the non-adhesive portion 21 are the cover plate as described above. Bonded to the main body 10. Therefore, if the lid plate body 10 is pulled up and rotated in the opening direction around the crease 9, the tear line 14 around the lifting portion 17 of the closing plate 15 is broken and the lifting portion 17 becomes the lid plate body. 10 and is rotated in the opening direction around the crease 9 to open the lifting portion corresponding area 19 of the outlet 16. At the same time, the cut line 14 around the descending portion 18 of the closing plate 15 is broken, and the descending portion 18 rotates around the folding ruler 9 toward the inward side of the box body. And the descending part corresponding | compatible area | region 20 in the taking-out port 16 in which the descending part 18 was located will be in the open state.
If the lid body 10 is rotated in the reverse direction (closing direction), the lifting portion 17 returns to the position corresponding to the lifting portion corresponding area 19 of the outlet 16, and the lowering portion 18 corresponds to the lowering portion of the outlet 16. Returning to the position of the region 20, the outlet 16 is covered with the closing plate 15 as in the case of unopened.

(Cut line)
As shown in FIG. 3, among the cut lines 14 that divide the closing plate 15 in the upper plate 2, the cut lines 14 are arranged at positions in the vicinity of the crease-corresponding portion a of the cut lines 14 at the periphery of the lifting portion 17. A hook-like line portion 22 is provided in which 14 is convex toward the center side of the closing plate.
Then, the lifting portion 17 of the closing plate 15 with the saddle-shaped line portion 22 as a boundary is a side perpendicular to the crease-corresponding portion a of the lifting portion 17 and is located at a position close to the descending portion 18 side. A cutout portion 23 corresponding to the shape of the hook-shaped line portion 22 is formed, and a convex portion 24 corresponding to the shape of the hook-shaped line portion 22 is continuously provided in the vicinity of the lifting portion corresponding area 19 of the outlet 16. The convex portion 24 is formed at a position close to a portion orthogonal to the crease-corresponding portion a around the raised portion corresponding region 19.
The cut lines 14 are formed by discontinuously arranging the cuts in a line, and the cut lines in the hook-like line portion 22 only need to be hooked. For example, one cut may be cut into a substantially letter shape at the position of the hook-shaped line portion 22. Further, the inclined portion of the substantially square-shaped cut may be cut toward the center of the closing plate, and in this case, the notch portion 23 and the convex portion 24 are partially formed at the time of unopening. In a continuous state. Of course, this continuous portion is a continuous portion between the cuts at the cut line 14 and is a portion that is easily cut.

(Pull up the lid body)
As described above, the hook-like line portion 22 is provided on the cut line 14 around the lifting portion 17 of the closing plate 15 at a position near the crease-corresponding portion a orthogonal to the cut line 14. Since the convex portion 24 is formed at a position close to a portion orthogonal to the crease corresponding portion a of the lifting portion corresponding region 19 in the outlet 16, the convex portion 24 and the descending portion 18 of the closing plate 15 are connected to each other. By locking, the standing state of the lid plate body 10 with the closing plate 15 is maintained as follows, and the open state of the outlet 16 can be maintained.

In order to maintain the lid plate main body 10 in the open state, the lid plate main body 10 is rotated in the opening direction around the crease 9 with the knob 12. With this rotation, the closing plate 15 rotates around the position of the crease 9, the cut line 14 around the closing plate 15 is broken, and the notch 23 of the closing plate 15 and the above-mentioned outlet 16 are The convex part 24 isolate | separates. Further, the descending portion 18 of the closing plate 15 rotates around the position of the crease so as to move away from the descending portion corresponding area 20 of the outlet 16 and wrap around toward the inside of the box body.
Further, by rotating the lid plate body 10 toward the lid plate support portion 8, the descending portion 18 goes around the box centering on the position of the crease 9 and toward the lifting portion corresponding region 19 side at the outlet 16. Rotate. While the descending portion 18 is rotated toward the lifting portion corresponding region 19 side, the side edges 25 facing in the longitudinal direction of the crease corresponding portion a of the descending portion 18 come into contact with the convex portion 24.
The side edge of the convex portion 24 facing the descending portion corresponding region 20 side is inclined toward the center side of the outlet 16, and the side 25 of the descending portion 18 is in sliding contact with the side edge of the convex portion 24. It is provided to be movable. Therefore, even if the side 25 of the descending portion 18 comes into contact with the convex portion 24, it moves while sliding on the convex portion 24 so as to get over the convex portion 24, and on the side of the lifting portion corresponding region 19 of the outlet 16. Move to. In this way, the convex portion 24 on the side of the outlet 16 is in relation to the descending portion 18 that moves to the lifting portion corresponding area 19 of the outlet 16 by rotation about the position of the crease 9 of the closing plate 15. It is set as the position which the side 25 of the descending part 18 latches so that engagement / disengagement is possible. Further, the descending portion 18 that moves to the lifting portion corresponding area 19 with the rotation of the closing plate 15 reaches the locking position with the convex portion 24 and moves forward after making sliding contact at the locking position. To do.

Then, by releasing the hand that rotates the lid plate body 10, the lid plate body 10 naturally rotates in the closing direction by folding back of the crease portion (extension by the restoring force of the crease portion of the lid plate 7). The closing plate 15 associated with the lid plate main body 10 rotates in the direction of closing the outlet 16 around the position of the crease 9. At this time, the descending portion 18 of the closing plate 15 begins to rotate in a direction to return to the descending portion corresponding area 20, but the side 25 of the descending portion 18 and the convex portion 24 are locked as shown in FIG. The rotational movement is stopped in the direction in which the descending portion 18 returns to the descending portion corresponding area 20. That is, the descending portion 18 that has passed through the locking position with the convex portion 24 is detachably engaged with the convex portion 24 by the rotation of the lid plate body 10 in the closing direction by the restoring force of the crease portion of the lid plate main body 10. Since it stops, it is locked at the locking position with the convex portion 24 when returning. Therefore, the lid plate body 10 stops in the standing state, and the standing state is maintained. Since the lifting portion 17 of the closing plate 15 is also bonded to the lid body 10, the lifting portion corresponding area 19 at the outlet 16 is kept open.
When the lid plate main body 10 is rotated in the opening direction, even when the lid plate main body 10 is not tilted deeply into the lid plate support portion 8 side, the light vibration when the descending portion 18 passes the position of the convex portion 24 is generated. The timing of stopping the operation of rotating the lid plate body 10 in the opening direction by being transmitted to the fingertip having the lid plate body 10 is known, and the lid plate body 10 can be easily raised.

When closing the lid plate main body 10, the lid plate main body 10 may be simply pivoted in the closing direction so that the lid plate main body 10 is tilted toward the outlet 16, and the side 25 can be engaged with and disengaged from the two convex portions 24. The descending portion 18 that is stopped is rotated toward the descending portion corresponding region 20 side, so that the portions on the both sides 25 side of the descending portion 18 are slightly bent, thereby engaging with the convex portion 24. The stop is released and the descending part 18 returns to the descending part corresponding area 20, and the lifting part 17 returns to the lifting part body area 19, and the closing plate 15 is positioned at the outlet 16 and closed. As a result, the outlet 16 is covered.
The protruding portion 24 is engaged with the descending portion 18 so that the protruding portion 18 is detachable. The protruding length of each protruding portion 24 (the protruding length along the crease-corresponding portion a) is the lid plate body 10. The protrusion length is set so as not to generate resistance when the is rotated in the closing direction.

  The convex part 24 continuing to the peripheral edge of the outlet 16 is provided so as to be close to the crease-corresponding part a and opposed to the crease-corresponding part a in the longitudinal direction. The projecting lengths of the two convex portions 24 are different (see FIG. 3). When the descending portion 18 moves while being in sliding contact with the side edge of the convex portion 24, the side that is slidingly moving to the convex portion 24 having the shorter protruding length first passes through the position of the convex portion 24. After that, the side that is slidably moving to the convex part 24 having the longer protruding length passes through the position of the convex part 24, and the passing timing of the convex part position of each side 25 is determined. By slightly differing, the entire descending part 18 is twisted or displaced in the longitudinal direction corresponding to the crease-corresponding part a, and the stress generated by the sliding contact with the convex part 24 is dispersed so as not to concentrate on the local part. . Twist and misalignment of the descending portion 18 occur even when the lid body 10 is rotated in the opening direction or when the lid plate body 10 is rotated in the closing direction. In any case, local stress concentration occurs in the descending portion 18. This is to prevent it from occurring. Note that it is not always necessary to change the protruding length of the two convex portions 24.

(Non-adhesive part)
As described above, the closing plate 15 has the non-adhesive portion 21 that is not attached to the lid plate main body 10 on the side of the folding line corresponding portion a of the lifting portion 17, and is continuous with the non-adhesive portion 21. The descending portion 18 of the closing plate 15 is also not bonded to the lid plate support portion 8 as described above. Thus, since the descending portion 18 side of the lifting portion 17 is not bonded to the lid plate 7 and is continuous with the descending portion 18, the twist and displacement of the descending portion 18 (in the longitudinal direction corresponding to the folding line) The misalignment is not performed only by the descending portion 18, and twisting and misalignment including the portion that is the non-adhesive portion 21 of the lifting portion 17 is performed so that stress is not concentrated on the descending portion 18. I have to.

(Projection contact)
The two projecting pieces 13 of the lid plate main body 10 are positions corresponding to both end portions of the descending portion 18 of the closing plate 15, and the outer sides (side sides of the lid plate 7) of the projecting pieces 13 correspond to the descending portions. This corresponds to the position of the inner edge of the region 20. As described above, when the lid plate main body 10 rotates in the opening direction, each of the projecting pieces 13 rotates around the position of the crease 9 so as to enter the inside of the box. When rotating toward the inside of the box, as shown in FIG. 6, the outer edge of each of the projecting pieces 13 comes into sliding contact with the inner edge of the descending portion corresponding region 20.
Further, as the lid body 10 rotates in the opening direction, each of the projecting pieces 13 also reaches the position of the projecting portion 24 while being in sliding contact with the projecting portion 24, and the side of the descending portion 18 faces the projecting portion 24. When the lid plate main body 10 is pivoted in the closing direction by folding back at the position of the crease 9 so that the lid plate main body 10 is maintained in an upright state, the lid plate main body 7 is closed around the crease and closed. The space between the plate 15 and the non-adhesive portion 21 is slightly opened, and each of the projecting pieces 13 rotates from the position of the convex portion 24 to the descending portion corresponding region 20 side. And the outer side of each protrusion 13 located in the descending part corresponding region 20 comes into contact with the inner edge of the descending part corresponding region 20, and the outer side of this protruding piece 13 and the inner edge of the descending part corresponding region 20 Also, the rotation of the lid plate body 10 in the closing direction is suppressed by the contact, and the maintenance of the standing state of the lid plate body 10 by the engagement between the convex portion 24 and the descending portion 18 is assisted.
If the lid plate body 10 is rotated in the closing direction, the contact between the outer side of the projecting piece 13 and the inner edge of the descending portion corresponding region 20 is easily released, and the closing plate is rotated in the closing direction. It is provided so as not to hinder the operation.

(Pushing down part by protruding piece)
As described above, the projecting pieces 13 are provided corresponding to both end portions of the descending portion 18, and overlap the both end portions of the descending portion 18 when the cover plate body 10 is in a closed state. Therefore, as the lid body 10 is rotated in the opening direction, each of the projecting pieces 13 is rotated from the descending portion corresponding region 20 to the inside of the box to the lifting portion corresponding region 19 side, and the descending portion 18 is rotated. When both end portions of the contact portion come into contact with the convex portion 24, both end portions of the descending portion 18 are pressed toward the lifting portion corresponding region 19 side. As a result, the descending portion 18 can easily pass through the convex portion position without stopping while sliding on the convex portion 24.
Note that the protruding piece 13 itself has a role of pressing the both ends of the descending portion 18 at a position close to the center side of the descending portion 18 so as not to contact the inner edge of the descending portion corresponding area 20. Good. Further, the protruding piece 13 itself is not necessarily required.

(Keep the lid body closed)
The lid plate main body 10 can be rotated in the opening direction and the closing direction, and is rotated in the opening direction to lock the descending portion 18 of the closing plate 15 and the convex portion 24 of the outlet 16 as described above. With this simple operation, the upright state of the lid plate body can be maintained, and the lid plate body 10 can be returned to the closed position by releasing the locking by tilting the lid plate body 10. In order to more reliably close the lid body 10, for example, a known method such as inserting a part of the knob 12 into a slit provided at the end of the box body can be employed.

It is explanatory drawing which shows an example of the paper box which concerns on this invention. It is explanatory drawing shown in the state which expand | deployed an example by the blank. It is explanatory drawing which shows the closing board and cutting line of an upper board. It is explanatory drawing which shows the state which the lid plate main body stood up. It is explanatory drawing which shows latching with the convex part of an extraction port, and the descending part of a closing board. It is explanatory drawing which shows latching with a protrusion and the inner edge of a descending part corresponding | compatible area | region.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Paper box 2 ... Upper board 7 ... Lid board 8 ... Lid board support part 9 ... Folding rule 10 ... Lid board main body 13 ... Projection piece 14 ... Cut-off line 14a ... Line part along the box main body length direction 15 ... Closure board DESCRIPTION OF SYMBOLS 16 ... Outlet 17 ... Lifting part 18 ... Falling part 19 ... Lifting part corresponding | compatible area 20 ... Down part corresponding | compatible area | region 21 ... Non-adhesion part 22 ... Gutter-shaped line part 23 ... Notch part 24 ... Convex part a ... Folding rule corresponding part

Claims (4)

A paper box for packaging contents such as confectionery, comprising a cover plate overlaid on the upper plate of the box body portion consisting of an upper plate, a side plate and a bottom plate,
The upper plate is provided with an outlet having a shape corresponding to the shape of the closing plate, which is covered with a closing plate defined by a cutting line and can be opened by breaking the cutting line caused by the closing plate.
The lid plate includes a lid plate support portion and a lid plate body that is connected to the lid plate support portion via a crease and is rotatable about the crease.
The lid plate support portion of the lid plate is affixed to the upper plate excluding the closure plate, and the lid plate body is affixed to the closure plate, with the folding line that causes the lid plate body from the upper plate as a center. In the paper box in which the cut line is broken by the rotation made and the closing plate is caused to open the outlet,
The crease is disposed on the closing plate in a positional relationship intersecting with the cut line that defines the closing plate, and the closing plate is a lifting portion with a corresponding part as the crease being a boundary. And the descending part,
Provided in the vicinity of the crease of the cut line on the periphery of the lifting portion is a hook-like line portion that protrudes toward the center side of the closing plate, and the closing plate is surrounded by the hook-like line portion. A notch corresponding to the shape of the line-shaped line part is formed, and a convex part corresponding to the shape of the hook-shaped line part is formed continuously around the outlet,
The rotation of the closing plate about the folding ruled with the rotation of the opening direction causing the lid plate main body separates the convex portion of the outlet and the notch of the closing plate, and the folded ruled The descending portion of the closing plate is rotated toward the lifting portion corresponding region side at the outlet, and the descending portion is slidably moved with respect to the side edge of the convex portion of the outlet. Constructed so that the standing state of the lid plate body with the closing plate is maintained by locking the descending portion that rotates toward the descending portion corresponding region side of the outlet by the folding back of the portion and the convex portion Paper box characterized by being. A protruding piece projecting from the side of the lid plate body on the lid plate support portion side to the lid plate support portion side is cut and formed by a notch continuous to the crease, and the projection piece is rotated in the opening direction of the lid plate body. As it moves, it is slidably brought into contact with the inner edge of the exit corresponding area of the take-out port and can be turned around into the box,
The paper box according to claim 1, wherein when the lid plate main body is opened by rotation in the opening direction of the lid plate main body, the side of the projecting piece comes into contact with the inner edge of the area corresponding to the descending portion of the outlet.   The projecting piece overlaps the descending portion of the closing plate, and by the pivoting from the descending portion corresponding region to the lifting portion corresponding region side of the outlet with the pivoting in the opening direction of the lid plate main body, The paper box of Claim 2 which presses the descending part of a closing plate toward the raising part corresponding | compatible area side of an exit.   The paper box according to claim 2 or 3, wherein the protruding pieces are provided corresponding to both ends of the descending portion of the closing plate.

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