JPH0529918U - Bottom lid for packing box - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a packaging bottom lid that is inexpensive and easy to disassemble by material. [Structure] A bottom cover 1 is a box body having an open top surface, and a pair of cushioning materials 2 are arranged along a side wall 6 and a bottom surface 7 which face each other. A groove 2c having a width slightly wider than the thickness of the corrugated cardboard is provided at the end of the cushioning material 2 orthogonal to the longitudinal direction. The side wall 6 is provided with a projecting piece 6a that extends in the front-rear direction, and the front-rear wall 8 has an extending piece 9 that extends upward and has a bent portion 9a that bends inwardly in the middle.
To provide. The extension piece 9 has a convex shape upward from the bent portion 9a, the lengths of the short portions on both sides are substantially the same as the depth of the groove 2c, and the width thereof is substantially equal to the width of the cushioning material 2.
Make the length of the center almost the same as the height of the cushioning material 2,
The width is matched with the distance between the two cushioning materials 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a packaging box, and more particularly to a bottom lid.

[0002]

[Prior Art]

 BACKGROUND ART Conventionally, as shown in FIG. 4, a heavy-weight package such as an electric refrigerator has a pair of styrofoam cushioning materials 2 on the bottom surface along the opposing walls in a bottom lid 1 made of corrugated paper with an open top. The article 3 is fixed on the wall by adhesion, the article 3 is placed on the cushioning material 2, the outer box 4 having an open lower portion covers them, and the band 5 is hung. However, such equipment does not require a packaging box once it is installed, so a cheaper packaging box is required. Furthermore, when it is discarded, it is collected separately by material, so it is easy to disassemble by material. A packing box was required.

[0003]

[Problems to be solved by the device]

 The present invention has been made in view of the problems of the above-mentioned conventional example, and an object thereof is to provide a packaging bottom lid that is inexpensive and can be easily disassembled by material.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, in the present invention, a pair of cushioning materials is arranged along the opposite side walls and bottom surface of a box having an open top surface, and a groove is provided at the end of the cushioning material. Provided on the side wall is a protrusion extending in the front-rear direction, and extending on the front-rear wall is an extension piece inserted in the groove for holding the cushioning material. It is characterized in that it is longer than that and has a portion having substantially the same width in the space between the cushioning materials.

[0005]

[Action]

 The structure in which the projecting piece is bent and inserted between the cushioning material and the front and rear walls, the extension piece is bent to extend along the upper surface of the cushioning material, and the tip end is inserted into the groove. According to this, the cushioning material is fixed to the bottom lid without adhering.

[0006]

【Example】

 Hereinafter, an embodiment of a bottom lid for packing according to the present invention will be described with reference to FIGS. FIG. 1 is an assembly view of an embodiment of the present invention, FIG. 2 is a development view of corrugated paper for bottom lid, and FIG. 3 is a sectional view taken along the line AA of FIG. In FIG. 1, a bottom cover 1 is a box body having an open top surface, and a pair of cushioning materials 2 are arranged along a side wall 6 and a bottom surface 7 that face each other. The cushioning material 2 is made of, for example, styrofoam, has a top surface 2a formed into a rectangular parallelepiped and on which a bottom portion of the article 3 is placed, and a recess 2b for accommodating a protrusion fixed to the bottom portion. A groove 2c having a width slightly wider than the thickness of the paper is provided orthogonal to the longitudinal direction. The side wall 6 is provided with a projecting piece 6a extending in the front-rear direction, and the front-rear wall 8 is provided with an extension piece 9 extending in the upper direction and having a bent portion 9a bent inward in the middle. The elongated piece 9 has a convex shape upward from the bent portion 9a so that the lengths of the short portions on both sides are substantially the same as the depth of the groove 2c and the width thereof is substantially the same as the width of the cushioning material 2. The length of the center is made substantially the same as the height of the cushioning material 2, and the width is matched to the distance between the two cushioning materials 2.

In FIG. 2, the bottom cover 1 is assembled by cutting and bending corrugated cardboard paper having a required strength. In order to form a box having an open upper part, a bottom portion 7 is arranged in the center, side walls 6 are arranged on the left and right sides, and front and rear walls 8 are arranged on the upper and lower sides. The side wall 6 extends downward to form a projecting piece 6a, the front and rear walls 8 extend downward to form an extending piece 9, and valley fold lines 12 and 13 are provided respectively. The extension piece 9 is provided with a valley fold line 14 which is parallel to the valley fold line 13, and the distance between them is approximately the length from the end face of the cushioning material 2 to the groove 2c plus twice the thickness of the corrugated paper. The length from the valley fold line 14 to the tip is approximately the same as the height of the cushioning material 2, and notches are provided on the left and right of the lower end. The width of the cutout is made to match the width of the cushioning material 2, and the width of the portion sandwiched by the two cutouts is made to match the distance between the two cushioning materials 2. Further, the length of the portion left between the valley fold line 14 and the notch is made equal to the depth of the groove 2c.

For assembling the bottom cover 1 and the cushioning material 2, referring to FIGS. 1 and 2, first, a box body is formed by bending it along the valley fold lines 10 and 11. The projecting piece 6a is bent along the valley fold line 12 and placed inside the front and rear walls 8, and the cushioning material 2 is inserted along the bottom surface 7, the side wall 6, and the projecting piece 6a. Next, the extension piece 9 is bent at approximately 90 degrees along the valley fold line 14, and the extension piece 9 is bent inward along the valley fold line 13 to insert the tip into the groove 2c.

Since the bottom cover 1 according to the present invention is assembled as described above, as shown in FIG. 3, the side wall 6 is sandwiched between the front and rear walls 8 and the extension piece 9 together with the cushioning material 2 via the protruding piece 6a. Are integrated. Further, since the portion sandwiched by the notches of the extension piece 9 maintains the distance between the two cushioning materials 2, it forms a bottom lid for the packaging box which is strong against external force.

[0010]

[Effect of the device]

 As described above, according to the present invention, since the cushioning material is fixed only by bending the bottom lid, the material cost and labor cost associated with the bonding as in the conventional example can be omitted, and therefore the cost is low. Since it can be separated into corrugated cardboard and Styrofoam just by dismantling, it is possible to achieve the effect of easily handling separate collection.

[Brief description of drawings]

FIG. 1 is an assembly view of a bottom lid for a packaging box according to the present invention.

FIG. 2 is a development view of the corrugated paper for the bottom lid of the packaging box according to the present invention.

FIG. 3 is a sectional view of an essential part of a bottom lid for a packaging box according to the present invention,
The AA cross section of FIG. 1 is shown.

FIG. 4 is a cross-sectional view of a conventional packaging box.

[Explanation of symbols]

 1 Bottom cover 2 Cushioning material 2c Groove 6 Side wall 6a Projection piece 7 Bottom surface 8 Front-rear wall 9 Extension piece 9a Bent portion

Claims (1)

[Scope of utility model registration request] 1. A device in which a pair of cushioning materials are arranged along a side wall and a bottom face of a box whose upper surface is opened and which oppose each other. Along with the extending projecting piece, an extending piece extending upward in the front and rear walls and inserted into the groove for holding the cushioning material is provided, and the extending piece is longer than the depth of the groove and the spacing of the cushioning material. A bottom lid for a packaging box, characterized in that it has a portion having substantially the same width.