JPH0738138Y2 - Beverage container can lid structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a can lid structure for beverage containers and the like, and more particularly to prevention of separation of the opening piece from the can lid body and improvement of the ease of opening.

[0002]

2. Description of the Related Art There are roughly two types of can lid structures for beverage containers, such as pull-tab type and steion type. The pull-tab type is a system in which the opening piece is separated from the can lid body when the can is opened by connecting the opening piece and the can lid body with a breakable score line. Steion type has a part with a score line and a part without a score line in the connection between the opening piece and the can lid body, leaving the part without the score line,
This is a method in which the part surrounded by the score lines is pushed into the can to open it, and the opening piece does not separate from the can lid body.

The pull tab type can lid is a social problem from the viewpoints of environmental protection, pollution prevention, recycling and the like because the opening piece and the can lid body are separated from each other. On the other hand, the Steion-type can lid can solve the above problem, but since a part of the opening piece gets into the can, the opening piece is immersed in the contents,
There is a hygiene problem. Considering these points, the actual Kaihei 0
JP-A-2-144533 discloses a structure of a can lid as shown in FIG. This is a pull-tab type can lid 31 in which the opening piece and the can lid body are connected by a metal fitting so that the opening piece is not separated from the can lid body.

The structure of the can lid 31 will be described with reference to FIG.
The can lid 31 includes a can lid body 7, an opening piece 8, a metal fitting 21, a pull tab 3, a rivet 9, a rivet 11 and a rivet 13. The can lid main body 7 and the opening piece 8 are connected by a score line 6 that can be broken.

As for the opening operation of the can lid 31, first, referring to FIG.
The pull tab 3 is pulled up in the direction of the arrow 15, as shown in FIG. Then, opening is started from the vicinity of the break line 6A at the base of the pull tab 3. Next, pull the pull tab 3
When pulled in the direction of, the opening portion expands and the can lid 31 opens, as shown in FIG. However, since the opening piece 8 and the can lid 7 are connected by the metal fitting 21, the opening piece 8 and the can lid body 7 can be prevented from being separated from each other.

[0006]

Certainly, the metal fitting 21 provided on the can lid 31 is useful for preventing the opening piece 8 and the can lid body 7 from coming off after the opening. However, on the other hand, the metal fitting 21 makes the breaking operation of the portion L having the width of the metal fitting shown in FIG. 8 difficult. Therefore, the opening piece 8 cannot be separated from the can lid main body 7, and there is a problem that it is difficult to drink the contents.

The present invention solves the above problems and provides a can lid for a beverage container or the like that is hygienic and capable of complete breaking operation while preventing the opening piece from separating from the can lid body. The purpose is to provide.

[0008]

[Means for Solving the Problems] A can lid structure according to claim 1.
In manufacturing , the can lid main body, the opening piece connected to the can lid main body by a scoring line that can be broken, and attached to one end of the opening piece.
A broken finger engaging portion, between the finger engaging portion and the opening piece
A plate-like member provided over substantially the entire length of the opening piece
And a plate-shaped member having higher rigidity than the opening piece,
An end portion of the plate-like member near the finger engaging portion is connected to the opening piece.
Opening piece first connecting portion, opening piece first connecting portion of the plate member
Lid side connection for connecting the end portion on the opposite side to the can lid body
Part, the end of the opening piece on the side opposite to the finger engaging part side, and
Mouthpiece intermediate connection portion for connecting the plate-like member, further comprising a
The features.

[0009]

In the can lid structure according to claim 1, the opening is performed.
The plate-shaped member having higher rigidity than the mouth piece is
Provided between the opening piece and the opening piece over almost the entire length.
Has been. The edge of the plate-like member near the finger engaging portion and the opening
The mouth piece is connected with the opening piece first connecting portion. Previous
The plate-like member and the end of the opening piece opposite to the first connecting portion and the can.
The lid main body is connected by a lid-side connecting portion. The opening piece
The end portion on the side opposite to the finger engaging portion side and the plate-like member,
They are connected at the opening piece intermediate connection portion. Therefore, the above
A part of the opening piece is bent and opened by the finger engaging portion.
After that, the finger engaging portion was pulled up for further opening.
Even if the plate member bends the opening piece
There is no. By pulling up the finger engaging portion, the opening
A force is generated that tends to disengage the piece from the can lid body.
This detaching force is received on the entire connecting surface of both. The opening
The force required to separate the mouthpiece from the lid body is
Since it is proportional to the bond area of
As a result, the force required for the detachment becomes gradually smaller. this
Smoothly remove the opening piece from the lid body.
Can be made.

[0010]

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a can lid 1 according to an embodiment of the present invention. Can lid 1
Is a can lid body 7, an opening piece 8, a metal member 5 as a plate member, a pull tab 3 as a finger engaging portion , a rivet 9 as a lid side connecting portion ,
Rivet 11 which is an intermediate connection part of the opening piece and the opening piece first
It is provided with a rivet 13 which is a connecting portion . As the material of the can lid 1, general materials such as aluminum and steel are used. Figure 2
A sectional view of the can lid 1 is shown in FIG. The can lid main body 7 and the opening piece 8 are connected by a score line 6 as shown in FIG. The score line 6 has a smaller thickness than the other parts of the can lid main body 7 so that the score line 6 can be broken at the time of opening. The metal fitting 5 and the can lid body 7 are connected by a rivet 9. The metal fitting 5 and the opening piece 8 are connected by both the rivet 11 and the rivet 13. Also,
The pull tab 3 is connected to the rivet 13.

The can lid 1 is provided with a raised portion 14 near the opening. Therefore, when drinking, the mouth of the person who drinks does not come into contact with the cut edge, and injury can be prevented.

The opening operation of the can lid 1 is performed in the following procedure. First, as shown in FIG. 2, the pull tab 3
Is pulled up in the direction of arrow 15. Then, FIG. 3A,
As shown in FIG. 3B, the pull tab 3 starts to open near the fracture line 6a near the base thereof. Next, when the pull tab 3 is pulled in the direction of arrow 17, the opening portion expands as shown in FIGS. 4A and 4B. Furthermore, when pulling the pull tab 3 in the direction of arrow 17, Oite the fitting 5, the direction of the force of the arrow 19 around the rivet 11 acts. With this force, the vicinity of the break line 6b can be easily broken as shown in FIG.

[0013] Thus, in the present embodiment, after the mouthpiece 8 is opened about almost half, the break line portion in the vicinity of the rivet 11 of the opening piece 8 so as to lift upward by gold tool 5 There is. Therefore, in the conventional can lid 1 as shown in FIG. 8, it is possible to break the part that is the most difficult to break.

[0014] In addition, gold instrument 5 from the can lid body, hard it is desirable. Further, it is desirable that the rivet 11 and the rivet 13 are arranged near a portion that is hard to break. Metal fittings 5
A resin such as plastic may be used as long as it can exert such a function.

In this embodiment, the rivets 9 to 13 are
Although the can lid main body 7 and the opening piece 8 are convex, the metal fitting 5 may be convex.

When drinking, as shown in FIG. 6A, the opening piece 8 is rotated about 90 ° to the right or left around the rivet 9 to facilitate the drinking. At that time, as shown in FIG.
By providing 16 and pressing the opening piece 8 and the pull tab 3 with the pressing fitting 16, it becomes easier to drink. FIG. 6B shows a state in which the opening piece 8 and the pull tab 3 are held by the holding metal fitting 16. The pressing metal fitting 16 may be omitted, and the raised opening piece 8 may be pressed with a finger.

FIG. 7 shows another embodiment. In this embodiment, the rivet 13a and the rivet 13b are provided at two places at the joint portion at the base of the pull tab 6. in this way,
The first opening piece joint is composed of two or more rivets.
You can also

[0018]

In the can lid structure according to claim 1,
The plate-shaped member having higher rigidity than the opening piece is the finger engaging portion.
Between the opening piece and the opening piece, and for almost the entire length of the opening piece.
It is provided. An end portion near the finger engaging portion of the plate member
The opening piece is connected by the opening piece first connecting portion.
It An end portion of the plate-shaped member opposite to the opening piece first connecting portion;
The can lid main body is connected by a lid side connecting portion. The above
The end of the opening piece on the side opposite to the finger engaging portion side and the plate-like member
And are connected at the opening piece intermediate connection portion. According to
And pulling up the finger engaging part to open it further
However, the plate-shaped member does not bend the opening piece.
Yes. By pulling up the finger engaging portion, the opening piece
A force is generated to disengage the can lid body. this
The detachment force can be received over the entire joint surface of both. The opening piece
The force required to remove the lid from the lid body is
Since it is proportional to the combined area,
Thus, the force required for the detachment becomes gradually smaller. By this
Smoothly disengages the opening piece from the lid body.
be able to. That is, according to the invention of claim 1, it is possible to provide a can lid of a beverage container or the like which is hygienic and capable of complete breaking operation while preventing the opening piece and the can lid body from being separated.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view taken along line I-I of FIG.

FIG. 3 is a diagram showing a state in which a pull tab is raised. A
Is a perspective view and B is a cross-sectional view.

FIG. 4 is a diagram showing a state in which the opening is further advanced. A
Is a perspective view and B is a cross-sectional view.

5 is a cross-sectional view taken along line I-I of FIG. 1 showing a state in which the opening piece and the can lid body are completely broken.

FIG. 6 is a diagram showing a state in which the opening piece is rotated after the opening operation is completed. A is a perspective view and B is a sectional view taken along line XX of A.

FIG. 7 is a plan view showing another embodiment.

FIG. 8 is a plan view showing a conventional can lid.

9 is a cross-sectional view taken along the line AA in FIG.

10 is a line A of FIG. 8 in a state where the opening operation is advanced.
It is a sectional view in -A.

[Explanation of symbols]

 3 ... pull tab 5 ... metal fittings 6 ... score line 7 ... can lid body 8 ... opening pieces 9, 11, 13 ... rivets

Claims (1)

[Scope of utility model registration request] 1. A can lid main body, an opening piece connected to the can lid main body by a breakable score line, a finger engaging portion attached to one end of the opening piece, the finger engaging portion and the opening piece. And between the opening piece
A plate-shaped member provided over the entire length, the opening piece
A plate-shaped member having higher rigidity than the plate-shaped member, the end of the plate-shaped member near the finger engaging portion and the opening piece are connected.
The opening piece first connecting portion to be connected, the end of the plate-shaped member opposite to the opening piece first connecting portion, and
A lid-side connecting portion that connects the can lid main body, an end portion of the opening piece opposite to the finger-engaging portion side, and the plate shape
A can lid structure , comprising: an opening piece intermediate connecting portion for connecting with a member .