JP2551051Y2 - Corner protection for paper box - Google Patents

Description

[Detailed description of the invention]

[0001]

In the present invention, the corners of the paper box lid or the ceiling or bottom plate of the body and the front, rear, left and right side plates can be easily fixed by an amateur without using dedicated equipment. The present invention relates to a corner fixing protector of a paper box capable of protecting the corner.

[0002]

2. Description of the Related Art Heretofore, the corners of a paper box cover or body for storing "arithmetic teaching tools" such as a hajime, a clock, a counting stick, money, etc. as teaching materials in an elementary school are formed by the paper box cover or the front, rear, left and right side plates of the body. Of the other side is extended and folded into the inner surfaces of the other front, rear, left and right side plates, and each is fixed with a staple or a staple.

[0003]

[Problems to be Solved by the Invention] In order to assemble the corner portion of the conventional paper box, a special stapler or a fitting device is required, which is troublesome and cannot be assembled by an amateur. .

[0004] For this reason, there is a drawback in that since the box is finished at the factory shipment stage, bulk is required for transportation or storage, and the transportation or storage cost is high.

[0005] In addition, since this kind of conventional box does not have a protective device for a corner portion, and the handling of this kind of box for elementary school children and the like is rough, especially the corner of the paper box is severely damaged and immediately broken. There is a drawback that this kind of storage box does not play a role.

SUMMARY OF THE INVENTION An object of the present invention is to provide a paper box corner fixing protector which does not require a dedicated device, can be easily assembled by an amateur, and protects the outer surface of the paper box corner.

[0007]

In order to achieve the above object, the present invention provides a corner covering plate for covering the outer surfaces of the corners of the lid or the ceiling plate or bottom plate of the paper box and the front, rear, left and right side plates. A projection is provided on the inner surface of the plate on both sides of the corner portion of the partial cover plate so that both side portions protrude wider than the inner surface ends of the plates on both sides of the corner portion.

The center and both side projections which are in contact with the inner surface of the corner of the cover or the body of the paper box and which are inserted between the projections of the two sides of the corner of the corner covering plate and on both sides of the corner of the projection. Is provided.

[0009] A return portion for locking the lower end portion of the projection is provided at a side end of the projection on both sides of the center projecting portion side of the insertion tool,
Projection insertion holes for inserting the projections are provided at corners of the front, rear, left and right side plates of the paper box.

Then, each corner covering plate is fitted on the outer surface of the corner with the projection on the inner surface thereof into the projection inserting hole of the front, rear, left and right side plates, and between the two projections of each corner covering plate and between the two projections. The insertion tool is inserted into both sides of the corner cover plate in a wedge shape.

A small projection is provided at a corner of an outer surface of the central protruding portion of a three-pronged plug having protruding portions at the center and both sides to be inserted into a gap between front, rear, left and right side plates of the paper box.

[0012]

A corner cover plate 1 for covering the outer surfaces of the corners of the lid or bottom plate 3 of the paper box or the body 2 and the front, rear, left and right side plates 4, 4, 5, 5 is provided. Both sides provided on the inner surface of the plates 1a on both sides of the corner are the plates 1 on both sides of the corner.
The protrusions 6, 6 wider than the inner surface ends of the a, 1a are respectively attached to the front and rear left and right side plates 4, 4, 5, 5, of the paper box lid or the body 2.
Each of the corner portions can be easily and temporarily fixed because they are inserted into the projection insertion holes 9 and 9 provided at the corner portions.

A three-branched plug-in tool 7 consisting of a central portion having a tapered tip and projecting portions 7a, 7b, 7b on both sides abutting on the inner surface of the corner of the cover or body 2 of the paper box is covered with a corner. The plug 7 is inserted between the projections 6 and 6 of the plates 1a on both sides of the corner of the plate 1 and on both sides of the corner covering plate 1 of the projections 6 and 6, so that the insertion tool 7 is inserted in a wedge shape and 4, 5, and 5 are firmly fixed.

Since the small projections 11 are formed at the outer corners of the central protruding portion 7a of the three-pronged insertion tool 7, the front and rear left and right side plates 4,
The small projections 11 are inserted into gaps 10 between the front and rear left and right side plates 4, 4, 5 and 5 of the paper box lid or body 2 when the 4, 5 and 5 are raised or hung, and the front and rear left and right side plates are 4,4,5,5
It is kept stable without wobble.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a top view of a cover in a cover state of a paper box, FIG. 2 is a top view of a body of a paper box in an open state, and FIG. 3 is a corner cover plate. FIG. 4 is of the plug-in device.

FIG. 5 is a sectional view taken along line AA of FIG.
7 is a view of the plug-in device from the outer surface of the corner portion, FIG. 7 is a view of the plug-in device from the side, and FIG.

Numeral 1 designates a corner covering plate, which is a lid of a paper box made of cardboard or a ceiling plate or bottom plate 3 of the body 2 and two folds at front, rear, left and right of the ceiling plate or bottom plate 3 as shown in FIG. When the front, rear, left and right side plates 4, 4, 5, 5 connected in series are erected or hung, they cover the outer surfaces of the respective corners. A curved cover 12 to be covered and a cover 13 for one piece of the thick paper are formed at the lower end or the upper end.

Reference numerals 6 and 6 denote protrusions formed on the inner surface of the corner covering plate 1. Both ends of the protrusions are formed on the inner surfaces of the plates 1 a and 1 a on both sides of the corner of the corner covering plate 1. In this embodiment, the cross section is formed into an inverted trapezoidal shape having a lower end at the end connected to the plates 1a on both sides. is there.

Here, the projections 6, 6 are connected to the plates 1a, 1a on both sides.
Is formed in an inverted trapezoidal shape with the continuous end of the bottom as a bottom, so that the inclined groove 6 is formed between the inner surface of the corner cover plate 1 and both sides of the protrusions 6.
a, 6a, but the projections 6, 6 are formed in a rectangular parallelepiped shape without projecting on both sides of the tip, and on both sides thereof, the projections 7b on both sides of the later-described insertion tool 7 and the center projection 7a side of 7b. The groove may be a groove into which the inner end of the inner side and both ends of the central protruding portion 7a are fitted.

Reference numeral 7 denotes a three-pronged insertion tool which abuts on the inner surface of each of the corners of the lid or body 2 of the paper box, between the projections 6, 6 formed on the inner surface of the corner covering plate 1, and between the projections 6, 6. Center and both side projections 7 to be fitted on both sides of the corner cover plate 1
a, 7b and 7b are formed.

Reference numeral 8 denotes a return portion.
b, 7b are provided at the side end of the central protruding portion 7a side,
When the projections 6, 6 are inserted between the projections 7a, 7b, 7b on the center and both sides, the projections 6, 6 are engaged with the lower ends of the projections 6, 6 to prevent the insertion tool 7 from being pulled out.

Reference numerals 9 and 9 denote protrusions 6 and 6 on the inner surface of the corner covering plate 1.
The side plates 4, 4, 5, 5 connected to the front and rear and right and left of the ceiling plate or the bottom plate 3 of the paper box lid or the body 2 with the protrusion insertion holes for
It is a square shape drilled at each corner.

Reference numeral 10 denotes a case in which the front, rear, left and right side plates 4, 4, 5, 5 are raised or hung at two folds from the lid of the paper box or the ceiling plate or the bottom plate 3 of the body 2, respectively. It is a gap generated between them.

Reference numeral 11 denotes a small projection provided at the tip of the outer surface of the corner portion of the center projecting portion 7a of the insertion tool 7, which abuts the corner cover plate 1 on the outer surface of each of the corner portions of the lid or body 2 of the paper box. When the insert 7 is inserted into the inner surface of each corner, it is inserted into the gap 10 between the front, rear, left, and right side plates 4, 5.
Due to the gap 10 between each side plate 4,5, each side plate 4,5
Prevents the paper box 2 itself from being broken easily.

In assembling the present invention, the front and rear side plates 4, 4 and
5 and 5 are raised or hung, and the corner cover plate 1 is inserted into the square protrusion insertion holes 9 and 9 in which the protrusions 6 and 6 on the inner surface are drilled at the respective corners of the side plates 4, 4 and 5. It is inserted and fitted to the lid of the paper box or the outer surface of each corner of the body 2.

A plug 7 is inserted into the inner surface of each corner of the paper box lid or body 2, and a central projecting portion 7a is covered with a corner covering plate 1.
Between the projections 6 and 6 on the inner surface and on both sides of the projections 7b and 7
b is inserted into both sides of the corner covering plate 1 of the projections 6 and 6 in a wedge shape, and a return portion 8 formed on the side surface of the center of the projections 7b and 7b on both sides on the side of the projection 7a is engaged with the lower surface of the projections 6 and 6. Stop.

At this time, the central projecting portion 7a of the plug 7
The small projection 11 provided at the tip of the outer surface of the corner portion is inserted into the gap 10 between the front, rear, left and right side plates 4 and 5.

[0029]

[Effect of the invention] Since the present invention has the above configuration,
In order to assemble the lid of the paper box or the body 2, a special device such as a stapler or a fitting device is not required unlike the related art, so that no labor is required and even an amateur can easily assemble.

Therefore, it is not necessary to assemble as a box at the time of shipment from the factory, it is not bulky, and transportation and storage costs are cheap.

A corner cover plate 1 is attached to the outer surface of the corner of the cover or body 2 of the paper box, and the protrusions 6 and 6 and the protrusions 6 of the inner surface of the corner cover plate 1 are attached to the inner surface of the corner of the cover or body 2 of the paper box. , 6 are inserted into both sides of the corner covering plate 1 in a wedge-like manner, and further into the gap 10 between the front, rear, left and right side plates 4, 5 at the outer end of the corner portion of the central projecting portion 7a of the inserting member 7. Since the small projection 11 provided was inserted, the lid or body 2 of the paper box was inserted.
It can reinforce itself, does not break even when handled roughly, and since the outer surface of the corner of the paper box lid or body 2 is protected, the corner of the paper box lid or body 2 is not easily broken. Things.

Further, a curved cover 12 for covering around the corner of the ceiling plate or bottom plate 3 is provided at the upper end or the lower end of the corner cover plate 1.
And a cover 13 for one sheet of thick paper at the lower end or upper end, the corner of the lid or body 2 of the paper box can be protected not only at the upper end or lower end corner but also at the lower end or upper end corner. The cardboard box provided with the corner fixing protector can function as a storage container for a long time even if rough handling is performed.

The corner fixing protector of the seed paper box can be provided on one or both of the lid and the body 2 of the paper box, and can be arbitrarily implemented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cover in a covered state of a paper box as viewed from above.

FIG. 2 is a perspective view of the body of the paper box in an open state as viewed from above.

FIG. 3 is a perspective view of a corner covering plate as viewed from an inner surface direction.

FIG. 4 is a perspective view of the insertion tool as viewed from an inner surface direction.

FIG. 5 is a cross-sectional view taken along line AA of FIG. 3 in a state where a corner cover plate is attached to a corner of a paper box lid or a body.

FIG. 6 is a front view of the insertion tool as viewed from an outer surface of a corner.

FIG. 7 is a side view of FIG. 6;

FIG. 8 is a development view of a lid or a body of a paper box.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 corner cover plate 1a, 1a plate on both sides of corner portion 2 lid or body of paper box 3 ceiling plate or bottom plate 4, 5 side plate 6 protrusion 6a inclined groove 7 plug 7a central protrusion 7b, 7b protrusion on both sides Reference Signs List 8 return part 9 projection insertion hole 10 gap 11 small projection 12, 13 cover

Claims (2)

(57) [Scope of request for utility model registration] 1. A paper box lid or a ceiling or bottom plate 3 of a body 2.
And a corner cover plate 1 for covering the outer surface of each corner of the front, rear, left and right side plates 4, 4, 5, and 5, and a corner of the corner cover plate 1 attached to the front and rear left and right side plates of the paper box lid or body 2. Board 1 on both sides
a, 1a are provided on the inner surface of the inner surface of the paper box lid or body 2 with projections 6, 6 whose both sides protrude wider than the inner surface ends of the two plates 1a, 1a. The center and both side projections 7a, 7b, 7 which are inserted between both projections 6, 6 and on both sides of the corner cover plate 1 of both projections 6, 6
b, a return portion 8 for locking the lower ends of the projections 6, 6 is provided at a side end of the both-side projecting portions 7b, 7b of the insert 7 on the side of the central projecting portion 7a. Protrusion insertion holes 9, 9 for inserting the projections 6, 6 are provided at the corners of the front and rear left and right side plates 4, 4, 5, 5 of the body 2, and each corner is covered on the outer surface of the corner. The projections 6 and 6 on the inner surface of the plate 1 are inserted into the holes 9 and 9, between the projections 6 and 6 of each corner covering plate 1 and on both sides of the corner covering plate 1 of both projections 6 and 6. A corner portion fixing protector for a paper box, wherein the insertion member 7 is inserted in a wedge shape. 2. Projections 7a, 7b, 7b at the center and both sides
The front and rear left and right side plates 4 of the paper box lid or body 2 are provided at the outer corners of the central protruding portion 7a of the three-pronged plug 7 having
2. The corner fixing protector for a paper box according to claim 1, further comprising a small protrusion inserted into the gap between the fourth, fifth and fifth boxes.