JPS6435818U - - Google Patents

Description

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of this invention. Figure 1 is a perspective view of the device in use, Figure 2 is a cross-sectional view taken along the line shown in Figure 1, and Figure 3 is a cross-sectional view taken along the line taken from Figure 1. Figure 4 is a perspective view of the main part on the way to inserting the insertion piece into the insertion hole, Figure 5 is a perspective view of the main part on the way to pulling out the insertion piece from the insertion hole, and Figure 6 is a developed view of the entire cardboard box. , FIG. 7 is a perspective view of a conventional example. DESCRIPTION OF SYMBOLS 1... Outer flap, 5... Insertion piece, 7... Removal prevention tongue piece, 7a... Rear end part, 8... Inner flap, 9... Insertion hole, 11... Expansion hole part, 12... Diagonal cut, 16
...Mountain crease.

Claims (1)

[Scope of utility model registration request] A pair of left and right insertion pieces 5, 5 are formed at the tip of the outer flap 1, which has a mountain fold 16 in the width direction at the middle part in the length direction, while the inner flap 8 has a corresponding position with the insertion pieces 5. An insertion hole 9 is provided in the cardboard box, and the top cover is sealed by inserting the insertion piece 5 into the insertion hole 9.In the cardboard box, the rear end 7a is rounded at the outer edge of the insertion piece 5. An inwardly foldable retaining tongue piece 7 formed in a shape or an oblique shape is continuously provided, while the lower corner of the proximal end side of the inner flap of the insertion hole 9 is expanded diagonally downward to form an expanded hole. A portion 11 is formed, and a diagonal cut 12 is provided from the expansion hole portion 11 toward the proximal end of the inner flap 8 to facilitate the removal of the retaining tongue 7. A cardboard box featuring