JPH107141A - Can-opening device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the degree of hygiene and cleanliness, by bending an opened lid toward the rear of a top plate and making it invisible from an opening. SOLUTION: A can-opening device opens a lid 3 by pressing the lid 3, formed inside a circular-notchlike score line 4 made in a top plate 2, with the pressing part 52 of a tab 5 as the tab 5 is pulled up, thus cutting the lid 3 along the score line 4 and bending the lid 3 inside the can. In the can-opening device, a projection 8 sticking out beyond the top is formed inside a part 4a connecting the lid 3 and the top plate 2, and the lid 3 is bent at a large angle greater than 90 deg. toward the rear of the top plate 2 by pressing the projection with the underside of the pressing part of the tab 5 pulled up. When the tab is pulled up, the lid becomes invisible because the lid is bent toward the rear of the top plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a can opening apparatus for raising a tab to form an opening in a top plate.

[0002]

2. Description of the Related Art FIG. 4 is a plan view of a can showing a conventional can opener. In the can opener, a score line 4 defining a lid 3 is formed on a top plate 2 of a can 1, and a tab 5 is fixed to the upper surface of the top plate 2 so as to be raised. The tab 5 has a raised portion 51 at one end and a pressing portion 5 at the other end.
2 has a fixing portion 54 defined by a U-shaped notch 53 at an intermediate portion, and the top plate 2 is formed by a rivet 6 at the fixing portion 54 with the pressing portion 52 facing the upper surface of the lid 3. It is fixed in the center of. And score line 4
Is formed in a notched annular shape, and has a connecting portion (a portion where score lines are not continuous) 4a for connecting the lid 3 to the top plate 2 near the pressing portion 52 of the tab 5.

With such a configuration, when a raising force is applied to the raising portion 51 of the tab 5 with a fingertip, the portion of the lid 3 close to the fixing portion 54 is pressed down, and the fixing portion 54 of the score line 4 is pressed. Starts from the portion 41 closest to the pressing portion 5 along the score line with the increase in the amount of elevating.
The lid 3 is pressed into the can, being cut in the order of the part 42 remote from 2 and the end 43 opposite the part 41 while simultaneously forming the opening 7 in the top plate 2.

[0004]

As shown in FIGS. 5 and 6, when the raising portion 51 is raised upright, the lid 3 is lifted.
Is bent downward at right angles to the top plate 2 in the can.
However, since the bending fulcrum of the tab 5 and the bending fulcrum of the lid 3 are located at different positions on one straight line perpendicular to the rotation surface when the tab 5 is raised, even if the tab 5 is further raised, Since the tip of the pressing portion 52 of the tab moves in a direction away from the connection portion 4a, the lid 3 turns only slightly in the can and cannot be bent to an angle exceeding 90 degrees with respect to the top plate 2. . Moreover, as shown in FIG. 7, in many cases, the immersion state is visible to the drinker through the opening 7. The liquid level LS1, LS2 of the contents when the can is held vertically at the beginning of opening and after the partial consumption of the contents, or the liquid levels LS3, LS4 of the contents when the can is tilted and drunk, Until it is consumed from the lower end to the position below, the lid 3 is immersed in the contents, and there is a possibility that dust and other dirt are attached to the top plate. Therefore, in the process of drinking the contents from the open can, the end of the lid is still immersed in the contents, and when drinking, it can be seen that the end of the lid is immersed in the contents. He gave a feeling of filth and a sense of resistance.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a can opener in which a lid surrounded by a score line is bent inside the can by opening a tab to open the can. The purpose of the present invention is to improve the hygiene and cleanliness by bending the lid so that it is not visible from the opening.

[0006]

In order to achieve the above object, the present invention is defined by a notched annular score line formed on the top plate by a pressing portion of the tab as the tab is raised. In a can opening device that presses a lid, cuts along the score line, and folds the lid to the inside of the can to open the can, a protrusion protruding from the upper surface inside a connection portion with the top plate of the lid. Is provided, and the projection is pressed by the lower surface of the pressing portion of the tab to be raised.
It is characterized in that it is bent at a large angle exceeding 0 degrees. With the above configuration, when the tab is raised,
The pressing portion cuts the lid along the score line, and in the last step of raising the tab, the pressing portion bends the lid to the back side of the top plate via the projection provided on the top plate. Thus, the lid is not visible from the opening. Further, the time during which the lid is immersed in the contents is instantaneous at the beginning of opening the can, and is not immersed during the subsequent drinking, so that foreign substances and the like do not enter the drinking material. Therefore,
It is sanitary and cleanliness is improved.

[0007] It is desirable to provide a hole or a recess in which the projection is fitted in the pressing portion of the tab. When this is provided, it is possible to prevent the pressing force from being applied to the projection from the beginning of the raising of the tab to increase the load. The gap between the tab fulcrum and the lid fulcrum causes the hole and the projection to shift with the progress of the can opening process, and a pressing force is applied to the projection from the tab.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described based on the illustrated embodiment. FIG.
FIG. 2 is a plan view of a can showing an embodiment of the can opener according to the present invention, FIG. 2 is a cross-sectional view of the can in the open state, and FIG. 3 is a perspective view of the can with the tab returned. The same reference numerals are used for members that are the same as or correspond to those of the conventional device.

In the present invention, a projection 8 is formed slightly inside the connecting portion 4a of the lid 3 with the top plate 2. The projection 8 is provided at a position corresponding to the lower surface of the pressing portion 52 of the tab 5 raised for opening the can. In a preferred embodiment, a small hole 55 is provided in a portion of the tab 5 corresponding to the projection 8 of the pressing portion 52, and the projection 8 is fitted into the small hole 55.

[0010] With the addition of the above-described configuration, since the can is opened using the opening device of the present invention, when the raising portion 51 of the tab 5 is raised, the pressing portion 52 is moved inside the score line 4 as in the conventional case. Is pressed, so that the score line is
The cutting is started from the portion 41 closest to 2 and the portion 42 far from the pressing portion. The bending fulcrum of the tab 5 and the bending fulcrum of the lid are at different positions, and the distance from the end of the rivet 6 which is the bending fulcrum of the tab 5 to the small hole 55 is the bending fulcrum of the lid 3. From a certain connection part 4a to a protrusion
The small hole 55 is displaced from the projection 8 with an increase in the amount by which the tab is raised. Therefore, FIG.
When the tab 5 is raised while the tab 5 is in the upright state, the lower surface of the pressing portion 52 presses the projection 8 as shown in FIG.
However, unlike the related art, it is greatly bent to the back side of the top plate 2 to an angle exceeding 90 degrees and less than 180 degrees. With an appropriate size or shape of the projection, the lid 3 can be bent to a state in which the lid 3 comes closest to the back surface of the top plate 2. Therefore, when the can is in the upright state, the liquid level LS of the contents is
Since 1 is filled so as to leave a space of about 1 cm less than the lid 2, at the beginning of opening the can, the lid 3 bends utilizing the space, so that the lid is instantly immersed in the contents. When the contents are to be drunk with the can inclined, the lower end of the lid 3 is located above the liquid level LS2, so that the lid 3 is prevented from being immersed in the contents. Since the bending angle is much larger than before, the lid 3 cannot be seen from the opening 7 after the can is opened, as shown in FIG.

The hole 55 provided in the pressing portion 52 of the tab is
If this is not provided, the pressing force is applied to the projection 8 from the beginning of raising the tab, and the load at the time of raising the tab may increase. However, if the hole 5 is provided, the load increases. There is an advantage that can be prevented. The tab may be provided with a recess for accommodating the projection 8 instead of the hole 55. Tab 5
Usually, in order to secure the strength, the peripheral part is folded back to the rear surface and formed thick. The concave portion may be formed by cutting off a part of the folded portion, or the thin portion may also serve as the concave portion.

[0012]

As described above, according to the present invention, when the tab is raised in the conventional manner, the lid is bent to the back surface of the top plate and cannot be seen from the opening. Also, the lid does not soak in the contents. Therefore, the contents are not contaminated by foreign substances or the like attached to the lid, and the contents are sanitary and the clean feeling is improved. Then, since it is only necessary to provide the projection on the top plate, it can be realized without increasing the cost.

When a hole or a concave portion is provided in the pressing portion of the tab so as to be fitted with the projection, it is possible to prevent an increase in the initial load of the tab.

[Brief description of the drawings]

FIG. 1 is a plan view of a can showing an embodiment of the can opener of the present invention.

FIG. 2 is a sectional view of the can in an open state.

FIG. 3 is a perspective view showing a state where a tab is returned.

FIG. 4 is a plan view of a can showing the configuration of a conventional can opener.

FIG. 5 is a plan view showing a state in which the tab is raised vertically.

FIG. 6 is a sectional view taken along line AA of FIG. 5;

FIG. 7 is a perspective view showing a state where a tab is returned.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Can 2 Top plate 3 Lid 4 Score line 5 Tab 51 Raising part 52 Pressing part 55 Small hole 7 Opening 8 Projection

Claims (2)

[Claims] 1. Along with raising of a tab fixed to a top plate, a pressing portion of the tab presses a lid defined by a notched annular score line formed on the top plate, and pushes the lid. In a can opening device that cuts along a score line and bends and opens the inside of the can, a projection protruding from the top surface is provided inside a connection portion of the lid with the top plate, and a pressing portion of a tab to be raised is provided. The can opening device wherein the projection is pressed by a lower surface, and the lid cut along the score line is bent at a large angle exceeding 90 to the back surface side of the top plate. 2. The can opening device according to claim 1, wherein a hole or a concave portion in which the projection is fitted is provided in the pressing portion of the tab.