JPH0118503Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a double-walled paper box in which the side walls are folded together.

[Conventional technology and its issues]

Conventionally, attempts have been made to double the side walls around the four sides in order to improve the rigidity of paper boxes. There were problems in that it was difficult to reliably engage the screws, the assembly was complicated, and the workability was extremely poor.

Therefore, it has been an issue to develop a paper box having double walls in which adjacent side walls can be surely engaged with each other and which can be easily assembled.

[Means to solve the problem]

The present invention has been made in consideration of the above-mentioned problems, and includes a paper box made of cardboard and having double side walls formed by folding. At the same time, claw locking flaps 8, 8 are provided at both ends of the outer side plates 2a, 3a of the front plate 2, back plate 3, respectively, and reach the same height as the box. A diagonal fold line 10 is provided from the end, and an M-shaped notch 11 for locking is provided on the fold line 10.
Inner and outer front plates 2a and 2b and inner and outer back plates 3
Fold the claw locking flap 8 between the flaps a and 3b along the fold line 10, insert the claw flap 7 between the folded-in claw locking flaps, and cut the claw 7a into the M-shaped cut 11.
The above problem is solved by providing a paper box that is fixed to the paper box.

〔Example〕

The present invention will be explained below with reference to illustrated embodiments.

FIG. 1 is a plan view of a flank sheet of a paper box according to the present invention, where 1 is a bottom plate, 2 is a front plate, and this front plate 2 is composed of an outer front plate 2a and an inner front plate 2b.
3 is a back plate, and this back plate 3 is an outer back plate 3a.
and an inner back plate 3b. Reference numerals 4 and 5 denote side plates, and the side plates 4 and 5 each consist of outer side plates 4a and 5a and inner side plates 4b and 5b, and 6 is a glue plate. The front plate 2, the back plate 3, and both side plates 4, 5 can all be made into double walls by center fold lines. The side plates 4, 5 have claw flaps 7, 7 symmetrical to each other at both ends thereof, each having a claw 7a. Outer front plate 2 in front plate 2
A square claw-locking flap 8 having the same dimensions as the height of the box is provided at both ends of the outer back plate 3a of the rear panel 3a and the rear panel 3, and the inner tip thereof includes the center 9 of the claw-locking flap 8. Cut out a square in each quarter, provide an oblique fold line 10 between the center 9 (corner) and the outer edge of the base of the claw locking flap 8, and place the tip of the claw flap 7 in the center of this fold line 10. An M-shaped notch 11 for locking that engages with the claw 7a is provided, and a claw locking flap 8 is provided between the inner and outer front plates 2a and 2b and the inner and outer back plates 3a and 3b.
is folded in from the fold line 10, the claw flap 7 is inserted between the folded claw locking flaps 8, and the claws 7a are engaged with the M-shaped notches 11 to fix the double side wall. This M-shaped cut needs to be accompanied by a cut 12 that is large enough to fit the claw 7a upward from the center.

To assemble this paper box, the side walls are formed into double walls and a glue plate 6 is attached to the bottom plate 1. FIG. 2 is a plan view of a part of the blank sheet to show the engagement relationship of the claws, and as shown in FIG. FIG. 4 is an explanatory diagram of the assembly in a state in which the inner front plate 2b is removed and the claw flap 7 of the side plate 4 is inserted and is about to be locked.
FIG. 5 is an explanatory diagram showing a state in which it is about to be locked, and FIG. 5 is an explanatory diagram showing a similarly locked state.

[Effect of idea]

In this way, the claws of the claw flaps enter the folded-in claw locking flaps within the double side wall and lock into the M-shaped notches, thereby firmly assembling the paper box.
The work is extremely simple and convenient, and the paper box of the present invention has an appearance as shown in the perspective view after assembly is completed.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a blank sheet of a paper box of the present invention, Fig. 2 is a plan explanatory view of a part of the blank sheet showing the relationship between the claw flap and its locking flap, and Fig. 3 is a plan view of the same. Assembly diagram, 4th
The figure is an explanatory view of the claw flap and the work of locking the claw, FIG. 5 is an explanatory view of the same state in which the claw is locked, and FIG. 6 is a perspective view of the paper box of the present invention upon completion of assembly. 1... Bottom plate, 2... Front plate, 2a... Outer front plate, 2b... Inner front plate, 3... Back plate, 3a...
Outer back plate, 3b... Inner back plate, 4, 5... Side plate, 4a, 5a... Outer side plate, 4b, 5b... Inner side plate, 6... Glue plate, 7... Claw flap, 7a...
...Claw, 8...Claw locking flap, 9...Center (corner),
10... broken line, 11... M-shaped cut, 12... cut.

Claims (1)

[Scope of utility model registration request] In a paper box made of cardboard and having double side walls formed by folding, mutually symmetrical claw flaps 7, 7 are provided at both ends of both side plates 4, 5, and
Claw locking flaps 8, 8 that reach the same height as the box are provided at both ends of the outer side plates 2a, 3a of the front plate 2, back plate 3, and a diagonal section from the outer end of the base of the claw locking flap 8 is provided. A folding line 10 is provided, and an M-shaped notch 11 for locking is provided on the folding line 10.
Outer front plates 2a, 2b and inner and outer back plates 3a, 3
In this paper box, a claw locking flap 8 is folded in between the flaps 8 and 8 along a folding line 10, and the claw flap 7 is inserted between the folded flaps to lock the claw 7a of the claw flap in the M-shaped notch 11.