JP3073118U - Storage case - Google Patents

Abstract

(57) [Summary] [Problem] A self-locking structural member of a lid has a long service life of a locking ear piece, and there is little occurrence of wrinkling near the film edge when the wrap film is pulled out, and it is sufficient. To provide a storage case that also has a function of a simple dust flap. A folding flap is formed at an upper edge of a side wall continuous with both ends of a bottom wall, and at a position near an inner front wall of the flap, at a position parallel to the flap mountain fold line and on a side wall side from the mountain fold line, A locking lug projecting outward from the front end edge of the flap was provided by a slit, and a paragraph portion was formed on the inner surface of the side cover to engage with the locking lug.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an improvement in a cardboard storage case that is formed integrally with a container body and that can exhibit a reliable self-locking function of a lid for a long period of time.

[0002]

[Prior art]

 As a storage case made of cardboard having a self-locking function of the lid, those disclosed in Japanese Utility Model Publication No. 52-35219, Japanese Utility Model Publication No. 7-12267 or Japanese Patent Application Laid-Open No. 10-287327 are known. However, in each of Japanese Utility Model Publication No. 52-35219 and Japanese Patent Application Laid-Open No. 10-287327, a locking projection on the upper edge of the side wall is formed at the center of the upper edge. The piece is constrained by the bending line of the dust flap so that both ends cannot be freely displaced, so the bending line is liable to be fatigue-cut by repeated bending, for example, when used as a wrap film case In addition, there is a problem that the function is lost before the film is used up, and if the film withdrawing direction is deviated left and right due to the lack of the degree of freedom of outward displacement of the front end of the dust flap. Beam edge is brought into contact with the front end portion of the dust flaps, also has wrinkling problems arising.

[0003] Further, in Japanese Unexamined Utility Model Publication No. 7-12267, since a tongue piece as a locking projection is formed on the entire upper edge of the side wall of the main body, a dust flap cannot be formed, so that it cannot be used for interior parts. There is a problem that it is impossible to wipe out the anxiety of dust contamination, and there is also a problem that the film edge is wrinkled due to the deviation of the film drawing direction.

[0004]

[Problems to be solved by the invention]

 In view of the problem of the conventional storage case having the self-locking function of the lid, the locking projection, which is the self-locking function member of the lid, has a long service life and is used as a wrap film case. It is an object of the present invention to provide a cardboard storage case which is less likely to be wrinkled as described above at the edge of the film even when the film is unbalanced in the direction in which the film is drawn, and which also has a function of preventing dust from entering.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, in the invention of claim 1, the inner front wall and the rear wall are adhered to the inner surface of the side wall continuous to the left and right ends of the bottom wall with an adhesive piece, and are continuously connected to the upper edge of the rear wall. The following configuration is added to the storage case where the outer front wall that is continuous with the front edge of the lid plate is attached to the left and right ends with continuous adhesive strips on the back of the side lid plate that is connected to the left and right ends of the lid plate did.

That is, a fold flap is formed at an upper end edge of a side wall connected to both left and right ends of the bottom wall, and a fold line is formed in a section of a predetermined length L in a portion of the fold flap near the inner front wall of the fold line. As a reference position, a slit which was deviated toward the side wall at a length of about 1.5 to 5 times the thickness of the blank and parallel to the mountain fold line was cut from the front edge of the side wall instead of the mountain fold line.

The portion of the folding flap defined by the slit is a locking lug projecting outward from the upper edge of the side wall when the folding flap is folded, and is connected to the left and right ends of the outer front wall. In addition, a paragraph portion is formed between the upper edge of the sticking piece attached to the back surface of the side cover piece and the back surface of the cover plate, to which the locking ear piece is locked, so that the problem can be solved. Delivery case.

[0008]

[Embodiment of the invention]

 FIGS. 1 to 3 show an embodiment in which the invention of claim 1 is applied to a wrap film case, and are folded. The storage case 1 shown in FIG. 1 and 2, the inner front wall 3 is continuous with one side edge 4A of the bottom wall 4 and the other side edge is formed as shown in FIGS. 4B, the rear wall 5 is continuous, the lid plate 6 is continuous with the other side edge 5B of the rear wall 5, the outer front wall 8 is continuous with the front edge 7 of the lid plate 6, and a mountain fold line is formed on both left and right sides of the bottom wall 4. Side walls 9 and 10 are continuous via 31A, and sticking pieces 11, 12 and 13 and 14 are extended on both left and right sides of the inner front wall 3 and the rear wall 5 via mountain fold lines 30A and 30B. Side cover plates 15 and 16 are extended on both left and right sides of the cover plate 6 through mountain fold lines 32A, and the left and right sides of the outer front wall 8 are provided. The structure Chakuhen 17, 18 bonded through a peak fold line 33A to an end are extended is approximately the same structure as the basic structure of the housing case made of conventional cardboard.

In the blank 2, folding flaps 19, 20 are provided at the outer edges of the left and right side walls 9, 10 via mountain fold lines 21, 22. Slits 23 and 24 having a width W of 1.5 to 5 times the thickness of the paper and a required length L are located on the side of the wall 3 near the side walls 9 and 10 with the mountain fold lines 21 and 22 as reference positions. In addition, the locking lug 1 formed in parallel with the mountain fold lines 21 and 22 from the front end edge on the inner front wall 3 side and protruding from the mountain fold lines 21 and 22 toward the bottom wall 4, that is, the side walls 9 and 10. 01 and 102 are formed.

When the fold lines 21 and 22 are bent toward the inside of the folding flap storage case, the slits 23 and 24 and the fold lines 21 and 22 are formed on the inner front wall 3 side of the fold lines 21 and 22. Due to the width W therebetween, the locking ear pieces 101 and 102 are formed to protrude outward, and when assembled to the storage case 1, as shown in FIG. 101 and 102 are formed to project outward.

The upper and lower edges 32, 33 of the sticking pieces 17, 18 extending from both left and right ends of the outer front wall 8 are formed by the front edge 7 of the cover plate 6, ie, the outer edges of the side cover plates 15, 16. The upper edges 32, 33 are parallel to the mountain fold lines 32A of the side cover plates 15, 16 when the storage case 1 is assembled. Then, they are attached to the back surfaces of the side cover plates 15 and 16.

The dimension of the gap V between the upper edges 32, 33 of the sticking pieces 17, 18 and the outer edges 36, 37 of the side cover plates 15, 16 is determined by the thickness of the cardboard forming the blank 2. The size is set to about 1.5 times to 5 times the size. In the illustrated example, the lower edges 34, 35 of the sticking pieces 17, 18 are set to be slightly above the position of the easy break line 38 formed on the outer front wall 8. The position and shape of the lower edges 34 and 35 are not limited to the illustrated example as long as the breakage and removal of 39 are not hindered.

A locking piece 39 is connected to the lower edge of the outer front wall 8 in the illustrated example via an easy breaking line 38, and a portion surrounded by a semi-circular slit 40 is shown in FIG. As shown, the cutting line 41 of the outer front wall 8 shown in FIG. 2 after removing the locking pieces 39 by the easy breaking line 38 attached to the lower portion of the outer surface of the inner front wall 3 after the contents are stored, If the stock is hardened and the easy break line 38 is perforated in a sawtooth shape, it can be used as it is as a cutting blade for a wrap film or the like. In FIG. 1, a dotted line portion indicated by reference numeral 42 on the inner front wall 3 is a sticking portion of a portion surrounded by the semicircular slit 40.

When the wrap film or the like is stored, the left and right side walls 9 and 10 are formed with slits 42 which are inserted into the heart tube and form projecting pieces for preventing the wrap film or the like from jumping out. Slits 43 and bending lines 44 corresponding to bending of the protruding pieces toward the storage case 1 are also formed on the sticking pieces 11, 12, 13, and 14. The slits 43 also hold the bent protruding pieces. A gap is also formed.

The storage case 1 according to the present invention is bent from the blank 2 shown in FIG. 1 by an automatic box making machine, and is attached by the attaching pieces 11 to 18 to assemble into the structure of FIG. However, the box-making process is the same as the box-making process of the conventional storage case, and therefore the description is omitted.

The storage case 1 according to the present invention stores a wrap film roll or the like in the case at the end of the box making process, and as shown by an arrow X in FIG. When the lid body 100 formed of the outer front wall 8 is closed, the leading edges of the locking ear pieces 101 and 102 become the upper edges 32 of the sticking pieces 17 and 18 attached to the back surfaces of the side cover plates 15 and 16. , 33, and the back side of the mountain fold line 32A of the side cover plates 15, 16, ie, the back surface of the cover plate 6, is inserted into the paragraph portion Y shown in FIG. 3 corresponding to the gap V shown in FIG. The lid 100 is held in the closed position by being locked.

As shown in FIG. 3, the locking lugs 101 and 102 that are fitted and locked in the paragraph section Y are continuous with the side walls 9 and 10 at the mountain fold line 21. Since the front edges 23A, 23B and the side edges 29C, 29D separated by the slits 23, 24 are discontinuous with the side walls 9, 10, the front edges 23A, 23B and the side edges 29C, 29D are not connected. The corner portions of the enclosed locking lugs 101 and 102 have a remarkably large degree of freedom of displacement due to the flexibility inherent in the material as the constituent material.

For this reason, when the lid 100 is rotated to the closed position, the entire front edges of the locking ear pieces 101 and 102 are pressed by the lower edges of the sticking pieces 17 and 18, and the locking ear pieces are Although only 101 and 102 are elastically bent, when the lid 100 rotates to the open position, the degree of freedom of the deformation of the corners of the locking ear pieces 101 and 102 is extremely large, The locking ear pieces 101 and 102 and the fold flaps 19 and 20 connected thereto are integrally elastically bent, and the engagement between the locking ear pieces 101 and 102 and the paragraph Y is released. Therefore, the fatigue of the locking ear pieces 101 and 102 is significantly reduced.

When a roll of a wrap film is stored, the direction of pulling out the film by opening the cover may be slightly deviated to the left and right. However, Japanese Utility Model Publication No. 52-35219 or Japanese Unexamined Patent Application Publication No. 10-287327 discloses the above. In the storage case disclosed in the official gazette, the front connecting portion between the dust flap and the side wall, which is a folding flap, hinders the movement of the film. In the related storage case, the front connecting portion between the side walls 9, 10 and the folding flaps 19, 20 is formed by the formation of the locking ear pieces 101, 102, so that the folding flaps 19, Since the gap between the side walls 20 and the side walls 9 and 10 is loose, the biased side edge of the film enters this free part, and the gap between the folded flaps 19 and 20 and the mountain-folded portion is formed. The wrinkling of the side edge of the wrap film is reduced by the delay of the contact.

[0020]

According to the present invention as set forth in claim 1, the paragraph portion formed between the back surface of the side cover plate and the upper edge of the sticking piece adhered to the back surface is locked. The latching lug protrudes outward from the upper edge of the side wall from the upper edge of the side wall by a slit deflected toward the side wall at a position near the inner front wall of the fold line of the folding flap at the upper edge of the side wall. The lid is separated from the locking ear piece and the folded flap portion connected to the locking ear piece or the side wall, so that the lid can be held at the closed position close to the front edge of the lid plate. Therefore, the locking force is the product of the locking strength of both the paragraph section and the locking lug and the length between the continuous portion of the lid plate and the rear wall and the front edge of the lid plate. This has the effect of realizing secure and stable locking of the lid.

[0021] As described above, since the locking ear piece and the folding flap portion connected thereto are separated from the side wall, the elastic bending of the locking ear piece and the folding flap is continuous. The above-mentioned boundary line portion is generated when the locking ear piece and the folding flap are elastically bent as a whole, and when only the locking ear piece is bent with the boundary line between the locking ear piece and the folding flap as a bending curve. This also prevents the loss of elasticity and breakage that may occur before using up the contents of the case due to fatigue.

Further, since the locking ear piece and the folding flap part connected to the locking ear piece are separated from the side wall, when used as a storage case for a wrap film roll, the film withdrawing direction is slightly deviated right and left. Even if the film edge is cut off by the slit between the locking lug and the side wall and enters the free gap, the folding flap is formed by bending the entire upper edge of the side plate along the mountain fold line. Compared to the case where the edge of the film comes into contact with the bent portion of the folding flap at the front edge of the upper edge of the side plate, there is also an effect that the wrinkles at the side edges of the film can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a developed plan view of a blank according to an embodiment.

FIG. 2 is a perspective view of a storage case formed from the blank of FIG.

3 is a perspective view showing only one end of the storage case shown in FIG. 2 when the lid is opened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage case 3 Inner front wall 4 Bottom wall 5 Back wall 6 Lid plate 7 Lid plate front edge 8 Outer front wall 9,10 Side wall 11,12,13,14 Adhering piece 15,16 Side lid piece 19,20 Flap flap 21, 22 Mountain fold line 23, 24 Slit 101, 102 Latching piece L Length W Width Y Paragraph

Claims (1)

[Utility model registration claims] 1. An inner surface of a side wall connected to both left and right ends of a bottom wall,
The inner front wall and the rear wall are adhered, and the outer front wall that is continuous with the front edge of the lid plate is continuous with the left and right ends on the back surface of the side lid piece that is continuous with the left and right ends of the lid plate that is continuous with the upper edge of the rear wall. A folding flap is formed at an upper end edge of a side wall continuous with the left and right ends of the bottom wall, and a portion of the folding flap near an inner front wall of a mountain fold line,
In the section of the predetermined length L, with the mountain fold line as the reference position,
A slit which is deflected to the side wall with a width of about 1.5 to 5 times the thickness of the blank and parallel to the mountain fold line is formed by cutting from the front edge of the side wall instead of the mountain fold line. The divided portion is a locking lug projecting outward from the upper end edge of the side wall when the folding flap is folded, and is continuous with the left and right ends of the outer front wall, and is adhered to the back surface of the side lid piece. A storage case in which a paragraph portion is formed between the upper edge of the attached piece and the back surface of the lid plate, in which the locking ear piece is locked.