JPH0136737Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a paper box having side walls formed by folding double folds, and in particular, the present invention relates to a paper box having side walls formed by folding double folds. Regarding the paper box on the wall.

[Prior art] Conventionally, this type of paper box was
The one shown in Publication No. 38558 is known. The paper box disclosed in Japanese Utility Model Publication No. 39-38558 has double side walls on all four sides, and locking pieces that are folded into the double side walls are provided on both sides of one pair of opposing sleeve pieces, and the other pair The sleeve piece is provided with a tongue piece longer than the height of the side wall, so that a plurality of boxes can be stacked while the side walls are pushed apart and the side walls are connected to each other via the tongue piece.

[Problem to be solved by the invention] By the way, in the above-mentioned conventional paper box, the side walls are locked to each other by a notch provided at the base of the tongue extending from one side wall and a folded back at the edge of the other side wall. This is done by engaging with a locking piece provided at the bottom. However, since the fold of the locking piece that the above-mentioned notch should lock is at the same height as the top of the side wall, it is extremely difficult to engage, and even once it is engaged, it quickly comes off, and there is no sufficient A locked state could not be obtained.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, provides a double-walled paper box in which the side walls are sufficiently engaged with each other, and is easy to assemble.

[Means for Solving the Problems] The present invention has been made in consideration of the above-mentioned problems, and is a paper box made of cardboard and having double side walls by folding. Mutually symmetrical claw flaps 7, 7 are provided at both ends of the front and back plates 2, 3, respectively, and claw locks having the same dimensions as the height of the box are provided at both side edges of the inner plates 2b, 3b of the front and back plates 2, 3, respectively. In addition to providing the flaps 8, 8, one of the diagonal lines of the pawl locking flap 8 is formed as a fold line 9, and a pawl locking punch hole 10 whose center is on this fold line 9 is formed by punching. Fold 8 in reverse along the fold line 9 and attach the overlapping sides to the inner plates 2b and 3b, and attach the glue margins formed on the side edges of the front and back plates 2 and 3 to the bottom, and attach the claw flap. 7 into this claw locking flap,
The gist of the paper box is a paper box having double side walls in which the claws of the claw flap are engaged with the claw-engaging punched holes 10.

[Examples] The present invention will be described in detail below with reference to illustrated embodiments.

FIG. 1 is a plan view of a blank sheet of a paper box according to the present invention, where 1 is the bottom, 2 is the front plate, 2a is the front outer plate, and 2b is the front inner plate which is folded inside. Similarly, 3 is a back plate, 3a is an outer back plate, and 3b is an inner back plate. Reference numerals 4 and 5 denote side plates, which similarly have outer side plates 4a, 5a and inner side plates 4b, 5b, respectively. 6 is the glue margin.

The front plate 2 and the rear plate 3 are folded in half along the center fold line and stacked on top of each other, and the same goes for the side plates 4 and 5, so that all the side walls have a double structure.

The side plates 4, 5 each have a completely symmetrical claw flap 7, 7 on both sides thereof, and when the side plates 4, 5 are folded in two they have a claw flap 7, 7 respectively, When 4 and 5 are folded in half, the claw flaps 7 and 7 also overlap in exactly the same shape to form a claw.

Claw locking flaps 8, 8 of the claw flap 7 are provided on both sides of the front inner plate 2b and the rear inner plate 3b,
This claw locking flap 8 has a square with the same length as the height of the box on both sides of the front (back) side, one of the diagonal lines 9 is a fold line, and the tip of the claw flap 7 is fixed at the center position. A pawl locking punched hole 10 having a shape that can be locked is provided.

Fig. 2 explains the relationship between the claw flap 7 and the claw locking flap 8, and Fig. 3 is an explanatory diagram of the assembly of that part. When the contacting surface 8a is adhered to this, and then the gluing margin 6 is adhered to the bottom 1, the folding is completed as shown in the plan view of FIG.

Next, each side wall is erected as shown in the explanatory diagram in Figure 5,
Insert the claw flap 7 into the folded center of the claw locking flap 8, and insert the claw flap 7 into the claw locking punched hole 10.
By locking the claw at the tip of the paper box, assembly of the paper box is completed as shown in the perspective view of FIG.

[Effects of the invention] As described above, in the paper box of the present invention, the pawl flap reliably engages with the pawl locking punched hole formed in the pawl locking flap, so that it does not easily come off, and the side walls are connected to each other. A sufficient locking state can be obtained. Furthermore, it is extremely easy to assemble, convenient for accumulation and transportation, and convenient for storage as it is easy to open the box to clean up after use.

[Brief explanation of drawings]

Figure 1 is a plan view of the blank sheet of the paper box of the present invention, Figure 2 is an explanatory diagram showing the structure of the locking part, Figure 3 is an explanatory diagram of the assembly of the locking part, and Figure 4 is a folded sheet just before assembly. FIG. 5 is an explanatory diagram of the assembly of the paper box, and FIG. 6 is a perspective view of the paper box of the present invention after assembly is completed. 1...Bottom, 2...Front plate, 2a...Front outer plate, 2b...Front inner plate, 3...Rear plate, 3a...
...Rear outer plate, 3b...Rear inner board, 4, 5...
Side plate, 4a, 5a... Side outer plate, 4b, 5b
...Inner side plate, 6... Glue margin, 7... Claw flap, 8... Claw locking flap, 9... Broken line, 10...
...Punched hole for pawl.

Claims (1)

[Scope of utility model registration request] In a paper box made of cardboard and having double side walls by folding, both side plates 4 are folded in half along the center line,
5 are provided with claw flaps 7, 7 symmetrical to each other at both ends of the inner plate 2 of the front and back plates 2, 3.
Claw locking flaps 8, 8 having the same dimensions as the height of the box are provided on both side edges of each of b and 3b, one of the diagonal lines of the claw locking flap 8 is set as a fold line 9, and a line on this fold line 9 is provided. A pawl locking punch hole 10 with a center is punched out, and the pawl locking flap 8 is reversely folded along the fold line 9 and the overlapping surfaces are adhered to the inner plates 2b and 3b. Face plate 2,
The glue margin formed on the side edge of 3 is adhered to the bottom, the claw flap 7 is inserted into this claw-locking flap, and the claw of the claw flap is locked into the claw-locking punched hole 10. Paper box with side walls.