JP3033203U - Square can - Google Patents

Abstract

(57) [Abstract] [Problem] There is no risk that the lower end of the corner of a square can will be caught by an object such as during packaging work or scratch the fingertip, and even if placed on a table, the top surface will not be scratched. Try not to. SOLUTION: Each side wall 2 is provided on four sides of a rectangular bottom part 1,
The winding tightening portions 3 are continuously provided at both ends of each side wall, and at the same time, the side walls 2 are folded up, and at the same time, the adjacent winding tightening portions 3 and 3 are tightened in a goby-like manner, and the winding tightening portions are angled at each corner 6 In a square can that protrudes to the inner surface of one side and has a corner, at the same time as folding each side wall 2, an arc-shaped curved portion 7 is provided at the lower end of each corner, and a smooth surface with a rounded outer surface. Formed.

Description

[Detailed description of the invention]

[0001]

[Technical field of invention]

 The present invention relates to a packaging square can.

[0002]

[Prior art]

 Conventionally, in square cans, for example, a square-shaped can in which each side wall is folded up and the winding portions at both ends of each side wall are tightened in a goby-like manner, and each corner has a corner, for example, Jitsuko Sho 48-29331. It is publicly known as shown in the publication.

[0003]

[Problems to be solved by the invention]

 As shown in FIGS. 4 and 5, a conventional square can is made by punching out a metal plate, folding each side wall 12 of the bottom 11 along the bottom side 15, and tightening the winding portions 13, 13 at both ends of each side wall. There is an advantage that a series of steps such as winding and tightening can be automatically formed. However, since the formed product has a right-angled corner at the lower end 17 of each corner 16, an object is likely to be caught in the corner during packaging work, and a prickle may be formed depending on the product. There is also a risk that the fingertips may be scratched or the top surface of the table may be damaged when placed on a table or the like.

In view of the above-mentioned drawbacks of the conventional products, the present invention has a risk that even if a product is automatically molded, the lower end of the corner of the square can is caught by an object such as during packaging work, or the fingertips are damaged, or the table is damaged. There is no fear of scratching the top surface.

[0005]

[Means for Solving the Problems]

 In the square can according to the present invention, each side wall is provided on each of the four sides of the bottom of the square, and each side wall is provided with a winding tightening portion. In a can that is tightened and the wrapping portion is projected to the inner surface on one side of each corner to form a corner, at the same time as folding each side wall, an arc-shaped curved portion is provided at the lower end of each corner, and the outside of the corner is formed. It was formed into a smooth, rounded surface. Furthermore, each side of the bottom of the square was bent and formed with the same diameter as the curved portion formed at the lower end of the corner. Thus, the curved portion formed at the lower end of each corner has a diameter of 1.2 mm to 1.6 mm.

[0006]

[Embodiment of the invention] 【Example】

 An embodiment of the present invention will be described with reference to the drawings. Side walls 2 are provided on the four sides of the bottom portion 1 of the rectangular metal plate, winding end portions 3 are connected to both ends of each side wall 2, and an edge winding portion 4 is formed at the upper end of each side wall 2. At the same time, the side walls 2 are folded along the bottom side 5, and at the same time, the adjacent fastening portions 3 and 3 are fastened to each other in a goby-like manner, and the fastening portions 3 are respectively attached to one of the corners 6 at each corner. The inner surface of each side is projected. At the lower end of each corner 6, the side wall 2 is folded up and, at the same time, an arc-shaped curved portion 7 is provided, and the outer side thereof is formed into a rounded and smooth surface. Further, each side 5 of the bottom portion 1 is also bent and formed to have the same diameter as that of the curved portion 7. The radius R of the curved portion 7 was formed in the range of 1.2 mm to 1.6 mm.

[0007]

[Effect of the invention]

 In the present invention having the above-mentioned structure, at the same time when each side wall is folded, an arc-shaped curved portion is provided at the lower end of each corner, and the outside is formed into a rounded and smooth surface. In the case of inside etc., there is no danger that something will get caught in the corner or scratch your fingertips. It also has the advantage that even if it is placed on a table, there is no fear of scratching the top surface. If each side of the rectangular bottom is bent to have the same diameter as the curved portion formed at the lower end of the corner, the lower end of each corner can be easily molded and the bottom can be formed beautifully. Thus, when the curved portion formed at the lower end of each corner has a diameter of 1.2 mm to 1.6 mm, the initial purpose can be best achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a square can according to the present invention.

FIG. 2 is an enlarged cross-sectional view of a lower curved portion of the same upper corner.

FIG. 3 is an enlarged cross-sectional view of a bottom portion of the upper side wall.

FIG. 4 is a perspective view of a conventional square can.

FIG. 5 is an enlarged cross-sectional view of a lower end portion of the same corner angle.

[Explanation of symbols]

 1 Bottom part 2 Side wall 3 Winding part 5 Bottom side 6 Corner angle 7 Curved part

Claims (3)

[Utility model registration claims] 1. Side walls are provided on four sides of a rectangular bottom, and winding fastening portions are continuously provided at both ends of each side wall. At the same time when the side walls are folded up, the winding fastening portions are fastened in a goby set shape. In a can whose corners are raised by projecting the winding part on one inner surface of each corner,
At the same time as folding each side wall, an arc-shaped curved portion is provided at the lower end of each corner, and the outside is formed into a rounded smooth surface. 2. The square can according to claim 1, wherein each side of the bottom portion is bent to have the same diameter as the diameter of the curved portion formed at the lower end portion of the corner. 3. The curved portion formed at the lower end of each corner is 1.2 m
The square can according to claim 1 or 2, wherein the square can has a diameter of m to 1.6 mm.