JPH07132936A - Can lid and drink can using the same - Google Patents

Abstract

PURPOSE:To provide a can lid wherein an outlet port and an air inlet hole can be safely and easily opened and a drink can using the lid. CONSTITUTION:A first opening piece 32 for forming an outlet port and a second opening piece 33 for forming an air inlet hole are provided on a main lid plane 2, and an opening tab 50 for opening them is attached. The tip of the opening tab is a first opening part 51 positioned above the first opening piece for opening it, while its rear end is a second opening part 52 positioned above the second opening piece for opening it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a can lid of a can for beer or soft drink, and more particularly to a can lid in which an air introduction hole is formed together with a spout and a beverage can using the same.

[0002]

2. Description of the Related Art Conventionally, as a can lid of this type, the one shown in FIGS. 3 to 5 has been known (Jitsuko Sho 54-2006).
No. 3). In these drawings, reference numeral 1 is a can lid, and a lid main plate portion 2 of the can lid 1 is provided with a first tongue piece 3 and a second tongue piece 5 which are raised in a dome shape. The first and second tongue pieces 3 and 5 are provided in a state of being hingedly coupled to the lid main plate portion 2, respectively, and the user pushes them into the can body with fingers. The opening 4 is formed so that a spout 4 and an air port 6 are formed. Then, as shown in FIG. 4 and FIG.
The peripheral edges 7 and 9 of the first and second tongue pieces 3 and 5 are respectively peripheral edges 8 and 10 of the spout 4 and the air port 6 in order to prevent the peripheral edges 7 and 9 from opening outward due to the internal pressure in the can. It is locked to the lower surface side of the above, and the gap between the both is closed with the sealant K.

6 and 7 show another conventional can lid (Japanese Patent Publication No. 55-20588). This can lid 20 has unsealing pieces 21 and 22 for opening the spout and the air port by being pressed by a finger, as in the above-mentioned one, and annular projections 23 and 24 are provided on the outer sides thereof, respectively. The inwardly inclined surfaces 25, 26 of the annular projections 23, 24 are provided with bite portions 27, 28 which are broken at the time of opening so that they can be easily pushed and opened with a finger and can withstand internal pressure of the can. Is.

[0004]

However, in all of the above-mentioned conventional devices, the opening portion is opened by directly pressing the opening portion with a finger. Therefore, the finger touching the edge around the opening portion may cause an injury. There was a concern that In addition, since it is necessary to push in a narrow portion to open it, it is difficult to apply a sufficient pressing force, and therefore it is particularly difficult to open an air hole that is set smaller than the spout.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a can lid which can be safely and easily opened by a person who opens it, and a beverage can using the can lid. .

[0006]

A can lid as set forth in claim 1,
A can lid that is crowned on the can body by winding the outer peripheral edge of the flat lid main plate around the upper part of the can body, and the lid body is opened by being pressed. First and second for forming a spout and an air introduction hole
The unsealing pieces are provided on both sides of the center of the lid main plate portion, and the unsealing tabs for unsealing the first and second unsealing pieces are attached.
In each of the second unsealing pieces, a part of their contour is a rupture line that is ruptured at the time of unsealing, and the rest is a bent portion that is bent downward, while the unsealing tab is A rivet portion formed at a substantially central position of the lid main plate portion is attached so as to be able to rise and fall, and a front end portion of the opening tab is located above the first opening piece to open the first opening piece. And the rear end is a second unsealing portion located above the second unsealing piece to unseal the second unsealing piece. A beverage can according to a second aspect is characterized by being crowned by winding the can lid according to the first aspect around an upper part of a bottomed cylindrical can body.

[0007]

In the can lid of the first aspect, both the spout and the air introduction hole are opened by operating the opening tab. That is, when the rear end of the unsealing tab is raised, the unsealing tab rotates about the rivet portion as a fulcrum to push down the front end portion which is the first unsealing portion, so that the unsealing tab is positioned below it. The first unsealing piece present is pressed, the breaking line forming the contour thereof is ruptured, and the bent portion is bent to unseal the spout. Further, if the rear end portion of the opening tab serving as the second opening portion is pushed down as it is, the second opening piece located therebelow is pressed, and the air introduction hole is opened in the same manner. . Therefore, the air introduction hole is opened prior to the opening of the spout by simply pushing down the rear end of the opening tab before raising the opening tab. In the beverage can of the second aspect, the air introduction hole and the spout are formed in the can lid as described above.

[0008]

Embodiments of the present invention will be described below with reference to FIGS. 1 and 2. The present embodiment relates to a beverage can, which is constructed by winding a can lid 30 (see FIGS. 1 and 2) around an upper part of a can body (not shown) having a bottomed cylindrical shape. It is a thing. The can body is made of, for example, aluminum by drawing. As shown in FIG. 1 and FIG. 2, the can lid 30 has a so-called Steion-type tab, and the opening tab 50 is attached to the rivet portion 31 formed at the substantially central portion of the lid main plate portion 2, and the opening is performed. By operating the tab 50 for operation, the first unsealing piece 32 for forming the spout and the second unsealing piece 33 for forming the air introduction hole are respectively opened to form the spout and the air introduction hole. Configured to form.

That is, the rivet portion 31 is formed so as to bulge upward at a substantially central portion of the lid main plate portion 2, and the opening tab 50 is caulked and attached to the rivet portion 31.

The first and second unsealing pieces 32 and 33 are formed on both sides of the rivet portion 31, respectively. First
The unsealing piece 32 is formed to have a substantially U-shaped contour by a broken line 34, and the base side thereof is a bent portion 35 that is bent downward when unsealing. Second unsealing piece 33
Has a substantially C-shaped contour by a broken line 36, and is formed in a shape that bulges slightly upward, and a base portion side thereof has a similar bent portion 37.

A bead portion 41 is formed on the first unsealing piece 32 by stamping for reinforcement. The bead portion 41 is formed in a substantially triangular shape over the entire upper surface of the first unsealing piece 32, and when the unsealing, the first unsealing piece 32 is deformed and the unsealing becomes incomplete. Is being prevented.

On the other hand, the unsealing tab 50 attached by the rivet portion 31 has the first unsealing piece 3 at the tip thereof.
It has a first opening portion 51 for pressing and opening the second opening 2, and a second opening portion 52 for pressing and opening the second opening piece 33 at the rear end.

The first unsealing portion 51 at the tip portion of the unsealing tab 50 faces above the bent portion 35 of the first unsealing piece 32, and the tip portion is formed in a substantially semicircular shape. There is.
The tip of the first unsealing portion 51 is located at a position of about a quarter from the bent portion 35 toward the tip of the first unsealing piece 32, and is arranged outside the bead portion 41. At the time of opening, the pressing force is effectively transmitted to the entire first opening piece 32.

The second unsealing portion 52 at the rear end of the unsealing tab 50 is located above the second unsealing piece 33. The second unsealing portion 52 also serves as a finger hook portion when unsealing. It should be noted that the lid main plate portion 2 located below the second opening portion 52 is hooked with a fingertip and the second opening portion 52 is attached.
In order to improve the operability when lifting up, the finger hole portion 40 recessed downward is formed, and the second opening piece 33 is provided on the upper surface of the finger hole portion 40.

In the beverage can having the above structure, the can lid 30 capped on the can body operates the second opening portion 52 of the opening tab 50 before opening the spout. The introduction hole can be formed. That is, the opening tab 5
When the second unsealing part 52 of 0 is pushed downward, it abuts and presses the second unsealing piece 33, the breaking line 36 is broken, and the second unsealing piece 33 is moved downward from the bent part 37. And the air introduction hole is formed.

Then, when the second opening portion 52 is raised upward, the opening tab 50 is pushed down with its leading end side, that is, the first opening portion 51, with the rivet portion 31 as a fulcrum, whereby the first opening portion is opened. The piece 32 is pressed to break the breaking line 34, and the first unsealing piece 32 is bent downward from the bent portion 35 to form a spout. The opened opening tab 50 does not hinder the pouring of the contents by returning it in the opposite direction.

According to the beverage can of the present embodiment described above, the can lid 30 capped on the can body has the second lid above the second opening piece 33 for forming the air introduction hole. Unsealing part 52
The rear end portion of the opening tab 50 that is set to
Since the air introduction hole is formed by pushing down the unsealing portion 52 and pressing and opening the second unsealing piece 33, the air introducing hole is formed only by pushing down the second unsealing portion 52 prior to unsealing. To be done. Therefore, it is possible to safely open the finger without being injured by the edge of the opening portion unlike the conventional case of directly pressing and opening the finger.

Further, in the conventional structure in which the opening piece is directly pressed with a finger, it is difficult to apply sufficient force because the force has to be concentrated on a narrow portion, but with the can lid adopted in this embodiment, Since it suffices to push down the entire second opening portion 52, the opening can be easily performed. Furthermore, since the second unsealing piece 33 is configured to bulge upward, the second unsealing piece 33 can surely contact the second unsealing portion 52, and the interval between the second unsealing portion 52 and the second unsealing portion 52 can be set small. Therefore, it is possible to surely open the second unsealing portion 52 by slightly pushing it down.

In the can lid 30, the rivet portion 31 is located at the position where the first and second opening pieces 32 and 33 are formed.
However, the position is not necessarily limited to this position. That is, the first and second unsealing pieces are arranged below the first and second unsealing parts of the unsealing tab, and are unsealed by pressing the first and second unsealing parts respectively. All you need is a position.

[0020]

According to the can lid of the first aspect, the rear end portion of the opening tab serving as the second opening portion is located above the second opening piece for forming the air introduction hole. Since the air introduction hole is formed by pushing it down and pressing and opening the second opening piece, the air introduction hole is formed only by pushing down the second opening portion before opening. Therefore, it is possible to safely open the finger without being injured by the edge of the opening portion unlike the conventional case of directly pressing and opening the finger.

Further, in the conventional structure in which the unsealing piece is directly pressed by the finger, the force must be concentrated on a narrow portion, so that it is difficult to apply the force sufficiently, but in the present invention, the second unsealing portion is used. Since it suffices to push down the whole, it can be opened easily.

According to the beverage can of claim 2, since the can lid of claim 1 is capped by being wound around the upper part of the bottomed cylindrical can body, the can can be safely and The can can be opened easily.

[Brief description of drawings]

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

FIG. 2 is a sectional view of the can lid.

FIG. 3 is a plan view of a conventional can lid.

FIG. 4 is a partially enlarged cross-sectional view showing a state before the can lid is opened.

FIG. 5 is a partially enlarged cross-sectional view showing a state in which the can lid is opened.

FIG. 6 is a plan view of another conventional can lid.

FIG. 7 is a sectional view of the can lid.

[Explanation of symbols]

 2 ... Lid main plate part 30 ... Can lid 31 ... Rivet part 32 ... First unsealing piece 33 ... Second unsealing piece 34 ... Break line 35 ... Bend part 36 ... Break line 37 ... … Bending part 50 …… Opening tab 51 …… First opening part 52 …… Second opening part

Claims (2)

[Claims] 1. A can lid which is crowned on the can body by winding an outer peripheral edge portion of the flat lid main plate portion around the upper part of the can body, wherein the lid main plate portion is pressed. A first and a second opening piece for opening the spout and the air introduction hole by being opened, and an opening tab for opening the first and second opening pieces In the first and second unsealing pieces, a part of their outline is a breaking line that is broken at the time of unsealing, and the rest is a bending portion that is bent downward. On the other hand, the opening tab is attached so that it can be erected by a rivet portion formed at a substantially central position of the lid main plate portion,
The front end of the opening tab is a first opening part located above the first opening piece to open the first opening piece, and the rear end part is above the second opening piece to open the second opening piece. A can lid characterized by being a second opening portion located at. 2. A beverage can, characterized by being crowned by winding the can lid according to claim 1 onto an upper part of a can body having a bottomed cylindrical shape.