JP3088549U - Paper tray case - Google Patents

Abstract

(57) [Summary] (Modified) [Problem] To provide a paper tray-like case that is far superior in strength characteristics, smarter in appearance, and easier to use than conventional cardboard trays. provide. One piece of paperboard as a material of a case 201 is:
The left and right edges of the rectangular bottom surface, the front and rear edges, the inner and outer side walls 3 and 2, which are folded in an overlapping manner, and the inner and outer front and rear walls 7 are connected via folds. The front and rear edges of both side walls are provided with a form in which an outer flap and an inner flap that are inserted into the respective overlapping gaps of the front wall and the rear wall are each connected via a fold, When the left and right side walls are erected in a superposed state, and a pair of left and right front and rear flaps are bent inward at a right angle, a meshing cut a is provided at a portion where they overlap each other, and the front of the case is provided. In order to form the upper half portion of the wall side to be cut obliquely, a configuration is provided in which a fold C is provided at the upper corner at the front side of both side walls. Engraved window 12 on the front wall of the case
To expose the label on the back side.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention is designed to be folded up from a single piece of paperboard such as corrugated cardboard, and to be used as a storage container for parts used in product assembly lines, as well as a convenient and sturdy storage box for use in offices and homes. Also relates to a smart paper tray-like case.

[0002]

[Prior art]

 Conventionally, most of the storage containers and storage boxes for the above parts are made of plastic, metal, or wood.

[0003]

[Problems to be solved by the invention]

 However, plastics are difficult to dispose and waste limited petroleum resources. This is especially true for parts containers with a relatively short useful life. In addition, metal products have disadvantages such as being heavy, easily rusting, and requiring much time and effort for production. Wooden products require even more time and effort, and are almost impossible to recycle after disposal.

[0004] Therefore, considering various problems such as post-disposal processing, waste of resources, and production costs, it is necessary to use corrugated cardboard which is inexpensive and has relatively excellent weight-to-strength characteristics as the material of the tray-shaped case. Can be considered. However, in the case of traditionally used cardboard trays for packing vegetables, which are discarded only once, the storage containers for heavy metal parts are somewhat lacking in strength. Yes, and it has no smart appearance when used as a storage box in offices and homes.

[0005] Therefore, an object of the present invention is to use cardboard such as corrugated cardboard as a material, and to have much better strength characteristics and a smarter appearance than conventional corrugated cardboard trays. An object of the present invention is to provide a paper tray-shaped case in consideration of ease of use.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the paper tray-shaped case according to the present invention can be easily and quickly folded from a single paperboard 100 into a tray-shaped case 200 having a strong and smart structure. The paperboard 100 is formed by overlapping left and right edges of a rectangular bottom surface 1, a front edge and a rear edge, respectively, in a superimposed manner, inside and outside walls 2 and 3, and inside and outside The front walls 4 and 5 and the inner and outer rear walls 6 and 7 are connected to each other through a fold, and the front and rear edges of the side walls 2 and 3 are respectively provided with the front walls 4 and 5 and the rear wall 6. The outer flaps 8 and 10 and the inner flaps 10 and 11 are connected to each other via folds to be inserted into the overlapping gap between the left and right side walls 2 and 3. After standing up, the front flaps 8 and 9 and the rear 10 and 11 of the left and right pairs are bent inward at right angles, respectively. In this case, a meshing cut a is provided at a portion where the two walls overlap with each other, and the upper half of the front wall of the case 200 is cut obliquely. It is characterized by having a configuration in which a fold C is provided at a corner. Further, the outer front wall 4 of the case 200 is provided with a hollow window 12 for exposing a part of the label inserted on the back side thereof. Further, a fixing protruding piece 13 protruding from the lower edge of the inner side wall 3 was inserted into an insertion hole 14 provided along the side edge of the bottom surface 1, and was interposed between the side walls 2, 3. On the top surface b of the tray 200 formed between the double folds A, an insertion cut 15 for inserting the fixing projection 13 is provided, so that the case 200 can be stacked when stacked. Another feature is that lateral displacement between trays is prevented. Further, an inner bottom surface 16 for superimposing on the bottom surface 1 is provided on the lower edge of the inner side wall 3 via a fold line.

[0007]

[Embodiment of the invention]

 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. The case 201 of this embodiment shown in FIG. 4 is folded up from one sheet of paperboard shown in FIG. The upper half of the front side of the case 201 has a shape that is cut obliquely so that the items in the case can be easily taken out.

The cardboard 101 has a substantially middle rectangular area as the bottom surface 1 of the case 201. At the left and right edges of the bottom surface 1 in the width direction, an outer side wall 2 and an inner side wall 3 which are folded inwardly of the case are respectively provided via a double fold A. On the front and rear edges of the bottom surface 1 in the longitudinal direction, an outer front wall 4 and an inner front wall 5, and an outer rear wall 6 and an inner rear wall 7, which are folded inwardly of the case, are provided. Each is connected via a heavy fold B.

Further, an outer flap 8 and an inner flap 9 are respectively connected to the front edges of the pair of left and right outer walls 2 and inner inner walls 3 via folds. An outer flap 10 and an inner flap 11 are respectively connected to each trailing edge via a fold. The inner and outer flaps 8, 9 and 10, 11 sandwich the inner and outer front walls 4, 5 and the inner and outer rear walls 6, 7 along the double fold B, respectively, so as to be sandwiched in each polymerization gap. It is for.

As described above, one characteristic of the case 201 is that the upper half of the front wall side is cut obliquely. Therefore, the outer outer wall 2 and the inner inner wall 3 are provided with a fold C having an inclination of approximately 45 degrees, which connects the intermediate height position of each front edge and the double fold A. The inclination angle is not limited to 45 degrees, and the most convenient angle may be determined for various trays having different sizes.

As shown in FIG. 2, the outer portion of the fold C is a folded piece 2 a or 3 a for folding on the inner surface of the outer wall 2 or the inner wall 3. By folding back in this manner, the appearance and structural strength of the cut portion are significantly improved as compared with the case where the upper half of the front wall is simply cut at 45 degrees. I can do it.

With the provision of the fold C, the outer flap 8 and the inner flap 9 on the front wall side of the case 201 can be reduced in height as understood from FIG. As shown in FIG. 3, the inner and outer flaps 8 and 9 are bent at right angles to each other in an overlapping state in a process of folding the case 201 from the corrugated cardboard 101, as shown in FIG. Are engaged with each other. For this purpose, the inner and outer flaps 8 and 9 are provided with meshing cuts a for engagement. The meshing cut a is also provided on the outer flaps 10 on the rear wall side of the case 201.

Further, a rectangular hollow window 12 is provided in the outer front wall 4. The hollow window 12 exposes a display portion of the label with a label (not shown) for displaying the contents of the case inserted into a gap formed on the back side of the front front wall 4. It plays a role.

Each lower edge of the inner inner walls 3 and 3 and the inner front wall 5 and the inner rear wall 7 (in a state where the case is folded up) is provided at one place or at appropriate three places at both inner and outer walls. A fixing protruding piece 13 is provided so as to fix the superposed state. On the other hand, on the periphery of the bottom surface 1, insertion holes 14 for inserting the fixing protrusions 13 are provided at positions corresponding to the respective fixing protrusions 13.

Next, an example of a procedure for folding the case 201 from the cardboard 101 will be described with reference to FIGS. First, the left and right outer walls 2 and the inner and inner walls 3 of the case 201 and the inner and outer flaps 8, 9 and 10, 11 connected to the respective front and rear edges are respectively aligned along the double fold A. Fold it up (see FIG. 2). At this time, as shown in FIG. 2, the folded pieces 2a and 3a are placed beforehand on the inner surfaces of the inner and outer walls 2 and 3, respectively.

When the inner and outer flaps 8, 9 and 10, 11 have been folded, the upright and left inner walls 2 and 3 are raised as shown in FIG. At this time, the fixing projection 13 protruding from the lower edge of the inner side wall 3 is inserted into the corresponding insertion hole 14 provided on the bottom surface 1 so that the inner and outer side walls 2 and 3 are superposed. Is fixed.

Subsequently, a pair of meshing cuts “a”, “a” and “a” are formed while bending each of the inner and outer flaps 8, 9, 10, and 11, one set each for the left and right, by bending them inward at right angles. When they are engaged, their upright and bent states are fixed.

Therefore, finally, after the outer front wall 4 and the rear wall 6 are erected, the inner front wall 5 and the rear wall 7 are bent inward along the double fold B, If the inner and outer flaps 8, 9 and 10, 11 in the superposed state are superposed on the respective inner surfaces, the fixing projections 13 at the lower edges of the respective flaps are inserted into the corresponding insertion holes 14 and shown in FIG. The case 201 of the folded form is easily and quickly folded, and the folded form is firmly fixed.

The frequency of the completed case 201 is considerably high while the user is gripping the front wall portion of the case during use. Therefore, the durability of the case 201 largely depends on the structural strength of the front wall portion.

At this point, the front wall portion of the case 201 further includes the outer periphery of the four inner and outer flaps 8, 9 and 8, 9 as shown in the partial longitudinal sectional view of FIG. It is in a state of being encased by the inner and outer front walls 4,5. The obliquely cut portions on the front end sides of the inner and outer side walls 2 and 3 are not actually cut, but are folded along the folds C provided at the front end portions. Tilted.

For this reason, for example, even if the front wall portion is gripped and moved frequently, for example, by operating a “drawer”, in a state where heavy metal parts or the like are jammed, the shape of the case 201 can be reduced. It is extremely unlikely that the will gradually collapse. Also, unlike the case of cutting diagonally, the unsightly cut end surface of the cardboard does not appear and the appearance is refreshing.

Next, FIG. 6 shows a second embodiment of the present invention. The difference from the first embodiment lies in the shape of the case. That is, the case 202 of this embodiment shown in FIG. 6 has a horizontally long shape while the case 201 of the first embodiment has a vertically long shape. With this configuration, for example, even if a plurality of cases 202 are stacked as shown in the figure for space saving or the like, it is easy to take out the articles on the back side in the cases.

Next, FIG. 7 shows a third embodiment of the present invention. The difference from the first embodiment is that, when the cases 201 are stacked, measures are taken to prevent lateral displacement between the cases.

That is, as shown in FIG. 7, the main part of the corrugated cardboard 102 of this embodiment is sandwiched between the two folds of the double fold A or B, and the peripheral wall of the case 202 (not shown). In the portion to be the top surface b, a notch 15 for insertion is provided for inserting the protruding lower end of the fixing protruding piece 13 of the upper case to prevent slippage. In this case, the notch 15 for insertion is formed in an H shape so that the fixing protrusion 13 can be easily inserted, and the lower end edge of the longer fixing protrusion 13 has an arc shape.

Next, FIG. 8 shows a fourth embodiment of the present invention. The difference from the first embodiment resides in that the bottom surface of the case 204 (not shown) or the entire bottom surface is folded up in a state of being overlapped with two sheets to reinforce the case.

That is, only the main part is shown in FIG. 8, and the corrugated cardboard 103 of this embodiment has substantially the same size as the bottom surface 1 at the lower edge of the inner wall 3 (when the case is folded up). The inner bottom surface 16 is continuously provided via a fold. The bottom surface 1 is not provided with any insertion hole 14 which is not preferable in that the strength and appearance are deteriorated.

Instead, a notch 17 is provided at each of the front and rear edges of the inner bottom surface 16 for inserting the fixing projections 13 provided on the front and rear inner walls 5 and 7. Only by providing these two sets of fixing projections 13 and notches 17, the case can be reliably fixed in the folded state.

Further, just by attaching a decorative paper or a waterproofing film or the like for cosmetics or waterproofing of the case to one side of the corrugated cardboard 103, the folded case can be assembled on both the inner and outer sides. All surfaces can be covered with decorative paper or waterproofing film.

[0029]

[Effect of the invention]

 As is clear from the above description, the paper tray-shaped case according to the present invention exhibits excellent practical effects as listed below. (A) By forming the upper part of the front wall side of the case as if it were cut diagonally, it is easy to take out the items inside, especially when the cases are stacked and used. (B) When the case is used like a drawer, it has a structural strength enough to withstand a large force repeatedly applied to the front wall of the case. (C) The hollow window provided on the front wall of the case makes it possible to read the contents of the label inserted on the back side of the case, making it easy to check the contents of the case. (D) Lateral misalignment when stacking and using cases can be reliably prevented by extremely simple means. (E) By simply connecting the inner bottom surface to the lower edge of each inner wall, a more robust case with a double bottom can be easily and quickly folded up. (F) Also, it is not necessary to make an undesired hole for fixing the folded shape of the case on the bottom surface of the tray.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention.
It is a top view in the state where it unfolded on the paperboard.

FIG. 2 is a perspective view showing a state where the case is begun to be folded from the paperboard;

FIG. 3 is a perspective view showing a state in which the case is being folded up;

FIG. 4 is a perspective view of the folded case.

FIG. 5 is an enlarged vertical sectional view of the vicinity of a front wall portion of the case.

FIG. 6 is a perspective view showing a second embodiment of the present invention, in which a case having a different vertical and horizontal dimensional ratio from that of the first embodiment is stacked.

FIG. 7 shows a third embodiment of the present invention, and is a partially enlarged plan view of a main part of a paperboard in which a measure for preventing a lateral displacement when stacking cases is used.

FIG. 8 is a partially enlarged plan view of a main part of a paperboard, showing a fourth embodiment of the present invention.

[Explanation of symbols]

 101-103 (100) Corrugated cardboard (paperboard) 201, 202 (200) Case 1 Bottom surface 2 Outside walls 3 Inside walls 2a, 3a Folded piece 4 Outside front wall 5 Inside front wall 6 Outside rear wall 7 Inner rear wall 8, DESCRIPTION OF SYMBOLS 10 Outer flap 9, 11 Inner flap 12 Boring window 13 Fixing projection 14 Insertion hole 15 Insertion cut 16 Inner bottom face 17 Notch A, B Double fold C Oblique fold a Mesh cut b Top surface

Claims (4)

[Utility model registration claims] 1. A tray-like case 200 having a sturdy and smart structure is easily and quickly folded up from one piece of paperboard 100. The paperboard 100 has a rectangular bottom surface. 1, the left and right edges, the front and rear edges, the inner and outer walls 2, 3 and the inner and outer front walls 4, 5 and the inner and outer rear walls 6, 7, respectively, The outer flap 8 and the outer flap 8 are inserted into the overlapping gaps of the front walls 4, 5 and the rear walls 6, 7 at the front and rear edges of the side walls 2, 3, respectively. 10 and the inner flaps 9 and 11 are connected to each other via a fold, and the left and right side walls 2 and 3 are erected in a superposed state, respectively.
One set of left and right front flaps 8, 9 and rear 10, 11
When each of them is bent inward at a right angle, an engagement cut a is provided at a position where they are overlapped with each other. 3. A tray case made of paper, comprising a configuration in which a skewed fold C is provided at an upper corner portion on the front side of No. 3. 2. A hollow window 1 for exposing a part of a label inserted on the back side of the outer front wall 4 of the case 200.
2. The paper tray-shaped case according to claim 1, wherein the paper tray-shaped case is provided. 3. A fixing projection 13 protruding from a lower edge of each inner side wall 3 is inserted into an insertion hole 14 provided along a side edge of the bottom surface 1, and is inserted between the side walls 2, 3. The case 200 was stacked by providing an insertion cut 15 for inserting the fixing projection 13 on the top surface b of the tray 200 formed between the interposed double folds A. 2. The paper tray-like case according to claim 1, wherein lateral displacement between the trays is prevented at the time of the operation. 4. The paper tray according to claim 1, wherein an inner bottom surface 16 for superimposing on the bottom surface 1 is continuously formed through a fold at a lower edge of the inner inner wall 3. Shaped case.