JP2609928B2 - Square metal can - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a so-called 18-liter can, which is used for storing and transporting liquids such as petroleum and paint.

(Prior art) This type of square metal can is generally formed by bending a can body material such as a plated steel sheet into a rectangular tube shape and joining the ends of the material together with a goby, for example, to form a can body. An upper lid and a bottom lid are tightened and connected above and below the can body. The ends of the can body material are joined together at the corners of the can body, but this is because the joints are relatively inconspicuous at the corners and a relatively high strength can be obtained. It is.

[Problems to be solved by the invention]

However, after the rectangular metal can is filled with liquid and closed with a cap, it may be transported to a loading place and stored in a stacked state.In this case, a hook is pulled on a handle attached to the center of the upper lid. Hanging and transporting it,
During the hanging transportation, the metal can may fall unexpectedly due to poor attachment of the handle, poor hook hooking, or the like.

When the heavy metal can filled with liquid falls as described above and the lower end of the corner part where the joint part of the can body collides with the floor surface, the joint corner part of the can body is compressed by the drop impact. As a whole, it is irregularly compressed and deformed, and this deformation locally expands the goby-tightened portion between the joining ends of the can body material to produce small voids, which may cause the filling liquid to leak out and contaminate the surroundings. there were.

The present invention, as described above, in a rectangular metal can having a shape in which one corner portion of a rectangular cylindrical can body is a jointed corner portion, by devising a partial cross-sectional shape of the can body. Another object of the present invention is to prevent the leakage of the filling liquid even if the rectangular metal can drops from the spliced corner portion and is deformed during the hanging transportation.

[Means for solving the problem]

In the rectangular metal can of the present invention, for example, as shown in FIG. 1, a horizontally long concave groove 7 is formed near the lower end of the joint corner A over the length of the radius R of the corner A. It is.

[Action]

In such a case, if the metal can during suspension and transportation falls from the spliced corner A and collides violently on the floor surface and receives a large compressive force at the lower end of the corner A, the lower end of the corner A Stress concentrates on a horizontally elongated groove 7 formed in advance in the vicinity, for example, as shown in FIG.
The part is deformed so as to be recessed inside the can. That is, it is possible to avoid a situation in which the drop impact is absorbed by the deformation around the concave groove 7 and the joint corner A is irregularly deformed and the joint ends are expanded.

In this case, when the lateral length of the concave groove 7 is smaller than the length l of the rounded portion R of the joint corner portion A, the deformation around the concave groove 7 portion is small, and the shock absorbing function is low. If the corner portion A is longer than the length l of the round portion R, the concave groove 7
The deformation centered on the portion is too large, which adversely affects the joint corner portion A. Therefore, when the lateral length of the concave groove 7 is set to the length over the region of the rounded portion R of the joint corner portion A, a sufficient buffer function can be exhibited while minimizing deformation.

〔Example〕

An embodiment of the rectangular metal can according to the present invention will be described with reference to the drawings.

FIG. 1 shows an entire rectangular metal can 1 according to the present invention. This square metal can 1 is generally called an 18 liter can, and is formed by bending a can body material (0.32 mm thick) such as a flat square plated steel sheet to form four corners A and B with a radius R. And one of the corners A
Is formed into a square cylindrical can body 2 having a seamed corner portion having a seamed portion 6 in which ends of the can body material are seamed together by goby fastening or the like. The upper lid 3 and the bottom lid (not shown) are connected to each other by winding the peripheral edges thereof above and below the can body 2, and the cap 4 is attached to a spout formed in a corner of the upper lid 3. Hanging handle 5 at the center of upper lid 3
Is provided.

Near the lower end of the joint corner portion A of the can body 2, specifically, at a position approximately 30 mm above the lower end, as shown in FIG. The groove 7 is press-formed.

When the lower end of the joint corner A collides with the floor surface when the liquid is filled and suspended and conveyed while being filled with liquid, as shown in FIG. Is deformed only to absorb a large impact load, and the entire joint corner A is irregularly deformed to prevent the joint ends of the can body material from expanding.

In order to avoid damage to the joint portion 6 due to large deformation of the joint corner portion A, it is sufficient to form the concave groove 7 only near the lower end of the corner portion A. A dummy concave groove 8 is formed near the upper end of the corner portion A and near the upper and lower ends of the remaining corner portion B.

The height of the concave groove 7 is appropriately changed according to the thickness of the material forming the can body 2, the strength of the joint portion 6 due to the difference in the joining means, and the like. For example, the thicker the material,
Further, as the strength of the joint portion 6 increases, the height of the concave groove 7 is increased to enhance the shock absorbing function.

〔The invention's effect〕

As described above, according to the present invention, with a simple modification in which the concave groove 7 is formed near the lower end of the joint corner portion A of the can body 2, a drop impact is applied to the lower end of the joint corner portion A. Even when it acts, the impact is absorbed by local deformation centered on the concave groove 7, and it is possible to suppress the occurrence of damage that causes the joint corner portion A to deform irregularly and leak to the joint portion. .

[Brief description of the drawings]

1 is an overall perspective view of a rectangular metal can according to the present invention, FIG. 2 is an enlarged side view of a main part, FIG. 3 is an enlarged side view of a main part deformed by a drop impact, and FIG. 4 is FIG. FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG. 2 ... can body, 6 ... joint part, 7 ... groove, A ... joint corner part.

Claims (1)

(57) [Claims] 1. A joint corner portion having a joint portion (6) obtained by joining one corner portion having a round portion (R) of a rectangular cylindrical can body (2) to an end of a can body material. (A)
In a rectangular metal can, a laterally elongated groove (7) is formed near the lower end of the joint corner (A) and extends over the length region of the radius (R) of the corner (A). A rectangular metal can characterized by the following.