JPH09142468A - Can with pull-top - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a user from cutting his or her hand or mouth on the broken edge of a can for canned goods by blunting burrs that are formed when the can is opened. SOLUTION: A pull-top part 10b of a recessed seat having a depth a little shallower than the plate thickness is press-formed on the flat part of a top end 10 in the opening direction A. A breaking guide shape 10c whose thickness decreases to half the plate thickness is formed at the base of the recessed seat so that the breaking direction B can be greatly shifted from the opening direction A. Since the pull-top part 10b is obstructed in the opening direction A by an obstruction part 10a2 formed at an outer frame part 10a of the top end 10, both broken edges rub against each other when the pull-top part 10b is opened and burrs 10a1 and 10b1 formed along the broken edges are blunted and rounded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a canned can with a pull top, and more particularly to a safe canned can with a burr in the opening crushed when the pull top is opened.

[0002]

2. Description of the Related Art FIG. 6 is a sectional view of an upper lid of a can with pull top before opening. A score portion (1c) having a V-shaped cross section is press-molded on the upper surface of the flat portion of the upper lid (1). FIG.
It is sectional drawing which shows the state which pulled up the pull top part (1b) in the opening direction (A), and was fractured | ruptured by the score part (1c). The breaking direction (B) of the score portion (1c) is the same as that of the pull top portion (1
In the same direction as the opening direction (A) of b), burrs (1a1, 1b1) are formed at the edges of the openings of the outer frame portion (1a) of the upper lid and the pull top portion (1b) after the opening at the time of breaking.

[0003]

In the conventional structure, since burrs remain on the edge of the broken portion, it is easy to cut the hand when opening and collecting the empty can. In addition, when the mouth is directly attached to the mouth to drink the contents, it is easy to cut the mouth.

[0004]

[Means for Solving the Problems] Upper lid of a can of can with pull-top In a cross section perpendicular to the opening line of the pull-top, the pull-top and the outer frame of the upper lid become the breaking guides by shifting the breaking direction and the opening direction of the pull-top. And has an overlapping portion in the pull-top opening direction, and the pull-top opening direction is determined in a direction in which the overlapping portion interferes with the pull-top opening.

[0005]

In the canned can with a pull-top as described above, when the opening edge portions of the outer frame portion of the upper lid and the pull-top portion are ruptured, they interfere with each other and rub against each other. Burrs are simultaneously and continuously completed. By crushing the burr remaining on the edge in this way,
It is difficult to cut hands when opening the pull top and when collecting empty cans.
It is also difficult to cut the mouth when the mouth is directly attached to drink the contents.

[0006]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 is an overall perspective view of the can with a pull-top before opening, and the two-dot chain line shows after opening. The pull top portion (10b) has a break guide shape (10c) which is cut off on the side opposite to the pull tab (30).
b) is left on the top lid (10) even after opening. 1 is shown in FIG.
1 shows a cross-sectional view taken along the line II. In the flat portion of the upper lid (10), the pull top portion (1
0b) is press molded. A rupture guide shape (10c) having a plate thickness of about half is formed at the root of the recessed seat, so that rupture is promoted in the illustrated break direction (B). FIG. 2 is a fracture guide shape (10c) in FIG.
FIG. 3 is an enlarged cross-sectional view of the pull top part (10b) showing a state where the pull top part (10b) is broken, and the two-dot chain line shows the pull top part (10b) before breaking
Is shown. When pulling out the pull-top part (10b) in the opening direction (A), the outer frame part (10a) of the upper lid interferes with the interference part (10a2).
Having. Accordingly, in order to open the pull top portion (10b), it is necessary to overcome the interference portion (10a2) while rubbing the edges by elastically or plastically deforming the pull top portion (10b) and the outer lid outer frame portion (10a). There is. Therefore, at the time of opening, the burrs (10a1, 10b1) formed at the fractured portions are crushed and rounded. FIG.
The II-II sectional view of FIG. 3 is shown. The pull tab (30) is
It has a ring part (30a) which is fixed to the pull top part (10b) by the caulking part (10b3) and allows a finger to pass therethrough. Further, the tip portion (30b) is located above the outer frame portion (10a) of the upper lid in the vicinity of the fracture guide shape (10c). FIG. 5 is a cross-sectional view showing a state in which a finger is hooked on the ring portion (30a) and the pull tab (30) is raised in the pulling direction (C) to start opening the can. The pull tab (30) has a tip (30
b) as a fulcrum, and the crimping part (1) of the pull top part (10b)
0b3) is lifted and a part of the fracture guide shape (10c) near the caulked portion (10b3) is fractured. The opening of the entire pull top portion (10b) is completed by putting a finger through the ring portion (30a) and pulling it up. The empty can has a pull top (10
It is collected by pushing b) into the can.

In such a can with a pull top, the pull top portion (10b) and the outer frame portion of the upper lid (10a)
Since the burrs (10a1, 10b1) formed at the fractured portion are crushed and rounded, it is difficult to cut the hand when the can is opened. Further, as shown in this embodiment, the pull-top portion (10b) is of a non-separable type, and the contents can be safely taken out even when the pull-top portion (10b) is left on the upper portion of the upper lid (10). The non-separable type allows the empty can to be collected without throwing away the pull-top part (10b) independently, and the pull-top part (10b) is pushed into the can to be collected, so that the recovery worker is injured. There is nothing to do.

Other than this embodiment, it can be widely applied to juice cans, corned beef cans and the like, though not shown. In the case of applying to a juice can, since the pull top portion is normally pushed down to open, the conventional pull tab structure may be adopted by reversing the opening direction of the recessed seat of the pull top portion of the embodiment. This makes it difficult for an infant to cut his tongue even if he accidentally puts it in the opening. Even if the upper opening of the pull top portion is adopted as in the embodiment, the exposed pull top portion does not cut the mouth or nose. If the upper part of the pull-top part is opened, a film is attached to the upper part of the top cover and it is rolled up together with the pull-top part at the time of opening. If it is applied to a can, which is typified by corned beef cans, and the main body of the can is divided into upper and lower parts in a strip shape at the center of the side of the can, the worker is injured even if the empty can is collected with the edge of the breaking part exposed to the outside. It is difficult to do.

[0010]

[Brief description of the drawings]

FIG. 1 is a cross-sectional view taken along the line I-I of FIG. 3 showing an opening of a can with a pull-top according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view showing a state in which the breaking guide shape of the pull top portion is broken in FIG.

FIG. 3 is an overall perspective view of a can with a pull top that is an embodiment of the present invention.

FIG. 4 is a sectional view taken along line II-II of FIG.

5 is a cross-sectional view showing a state in which the pull tab of FIG. 4 is raised and a can is started to be opened.

FIG. 6 is a sectional view showing a conventional canned can with pull-top before opening.

FIG. 7 is a cross-sectional view showing a state in which the pull-top portion is broken in FIG.

[0011]

[Explanation of symbols]

A: Opening direction, B: Breaking direction, C: Pulling direction, 10: Top lid, 10a: Top lid outer frame portion, 10
b: pull top part, 10c: fracture guide shape, 10
a1, 10b1: burr, 10a2: interference part, 10b
3: caulking part, 20: can body, 30: pull tab,
30a: Ring part, 30b: Tip part

Claims (1)

[Claims] 1. The pull top part and the outer frame of the top cover have an overlapping part in the pull top opening direction in the break guide part by shifting the breaking direction and the opening direction of the pull top in a cross section perpendicular to the opening line of the top cover pull top. In addition, the canned can with a pull-top in which the pull-top opening direction is determined so that the overlapping portion interferes when the pull-top is opened.