JPS638612Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an easy-to-open container lid, and more particularly to an easy-to-open container lid equipped with a synthetic resin gripping member.

Alcoholic beverages such as Japanese sake are used as easy-to-open container lids for containers for light drinks such as youth or foodstuffs, etc., as shown in FIGS. 1 and 2. A skirt portion 4 hanging down from the skirt portion 4 and a gripping piece 6 disposed at the lower end of the skirt portion 4
Integrally molded metal container lids are known. When such a container lid is gripped and pulled by the gripping piece 6 with fingers, it will tear along the tear weakening line (for example, score, perforation, etc.) formed on the skirt portion 4 and/or the top surface portion 2. The container is thus opened without the need for a bottle opener or the like.

Therefore, the known container lids shown in FIGS. 1 and 2 have the following drawbacks or problems (1) and (2).

(1) The above-mentioned container lid is generally manufactured by punching and press-forming a thin metal plate, and the gripping piece 6 is often simply left in the punched state. Therefore, the periphery of the gripping piece 6 is sharp, and when the user grips the gripping piece 6 strongly and tries to tear the container lid when opening the package, the sharp periphery of the gripping piece 6 may damage the user's fingers. This often happens.

(2) When the above-mentioned container lid is made by punching and press forming a thin metal plate, the gripping piece 6 integrated with the top part 2 and the skirt part 4 is used.
It is necessary to use a thin metal material of sufficient size to form the same. However, since the gripping piece 6 locally protrudes from the skirt portion 4 by a considerable length, even if a plurality of container lids are not manufactured as efficiently as possible from, for example, a sheet-shaped metal thin plate material, the gripping piece 6 will be A considerable amount of thin metal sheet material is wasted in the vicinity of (in other words, a considerable amount of thin metal sheet material is discarded as punching residue without contributing to the creation of the container lid).
Therefore, the utilization efficiency of the metal sheet material is low, and the manufacturing cost increases accordingly.

Therefore, regarding the drawbacks or problems in (1) above,
As disclosed in Utility Model Publication No. 52-27157,
It has been proposed and put to practical use to cover the sharp edges of the gripping piece 6 by covering the gripping piece 6 with a suitable synthetic resin material. In this way, the user's fingers are prevented from coming into contact with the sharp periphery of the gripping piece 6 that remains punched out, and therefore the drawback or problem in (1) above can be avoided. However, in this case, it is necessary to use a synthetic resin material to cover the gripping piece 6 in addition to the thin metal plate, and in addition to punching and press forming the thin metal plate. Although it is necessary to carry out a new process of covering the gripping piece 6 with a synthetic resin material, the drawback or problem mentioned in (2) above, namely, the drawback or problem that the utilization rate of the metal thin plate material is low. A point remains.

The present invention was made in view of the above facts, and its main purpose is to provide a new and superior easy-to-open container lid that simultaneously solves the drawbacks and problems in (1) and (2) above. It is to be.

As a result of intensive research, the inventors of the present invention formed a separate gripping member from an appropriate synthetic resin material for the part that the user grips with their fingers when opening the package, and formed the gripping member into a metal sheet integrally formed from a thin metal plate. It has been found that the drawbacks or problems in (1) and (2) above can be solved at the same time by connecting it to the skirt portion of the main body.

That is, according to the present invention, there is provided a top surface portion, a cylindrical skirt portion that hangs down from the periphery of the top surface portion, and a relatively small tongue-shaped piece that protrudes from the lower end of the skirt portion and has a through hole whose periphery is curled. and a weakened line formed in the skirt portion along the edge of the tongue, and a composite lid body having a distal end inserted into a through hole of the tongue and fixed thereto. Provided is an easy-to-open container lid comprising a resin gripping member, the main body of which can be torn by pulling the gripping member.

Hereinafter, specific examples of the easy-to-open container lid according to the present invention will be described in more detail with reference to FIGS. 3 to 9.

In addition, in FIGS. 3 to 6, the same reference numerals are used for similar components in order to avoid duplication of explanation.

As shown in FIG. 3, the container lid of the present invention is plugged into the opening of a Japanese sake container 10 containing, for example, one cup of sake, by a method well known to those skilled in the art, and is hermetically closed.
The container lid according to the present invention, designated as a whole by the number 12, is composed of a metal body 14 and a synthetic resin gripping member 16.

Aluminum, aluminum-based alloy, tinplate,
The main body 14, which can be formed by punching and press forming a suitable metal thin plate such as a chromium-treated steel plate, preferably an aluminum-based alloy thin plate, has a circular concave portion 17 formed in the center. It has a circular top surface part 18 that is circular, and a cylindrical skirt part 20 that hangs down from the periphery of the top surface part 18.
The skirt portion 20 is integrally formed with a relatively small tongue-like piece 22 protruding from its lower end, and a weakened line 24 extending circumferentially around the skirt portion 20 from one edge of the tongue-like piece 22. (This may be a so-called score or perforation that locally reduces the thickness of the material).

polyethylene, polypropylene, vinyl chloride,
The gripping member 16 can be molded from a suitable synthetic resin such as ABS resin, preferably polyethylene or polypropylene, by injection molding or the like.
In the specific example shown in the figure, the whole body 14 is formed into a ring shape, and when opening the bag, the user puts a finger on the ring-shaped portion of this gripping member and pulls it to weaken the main body 14. It can be torn along the chemical line 24.

The connection of gripping member 16 to tongue 22 is accomplished as shown in FIGS. 5 and 6. That is, a through hole 26 is formed in the tongue-like piece 22 of the main body 14, and a curling process 27 is applied to the periphery of the through hole. This increases the strength of the through hole 26 portion of the tongue 22, and also connects the gripping member 16 to the tongue 22 (more specifically, connects the protrusion 28 deformed as described below to the through hole 26). can be made even stronger.

On the other hand, a substantially cylindrical projection 28 having a diameter slightly smaller than the diameter of the through hole 26 is integrally formed on one side (in the case of illustration, the upper surface) of the tip of the gripping member 16 having the ring-shaped portion 30. It is formed. To connect the tip of the gripping member 16 to the tongue 22, first, as shown in FIG.
A protrusion 28 formed at the tip of the gripping member 16 is inserted into a through hole 26 formed in the tongue-shaped piece 22. Next, as shown in FIG. 6, the anvil 32 is brought into contact with the lower surface of the tip of the gripping member 16, and the anvil 32 is brought into contact with the upper surface of the tip of the gripping member 16.
A hot punch 34 heated to a required temperature is pressed, and the action of the hot punch 34 softens the free end of the protrusion 28 and at the same time deforms it into a disk shape having a diameter larger than the diameter of the through hole 26. . In this way, the tip of the gripping member 16 is reliably and firmly connected to the tongue-like piece 22 by the projection 28 deformed into a disc shape.

In the container lid 12 according to the present invention as described above, when opening the container, the user grasps the synthetic resin grip member 16 with his or her fingers, and weakens the metal main body 14 by pulling this. It is sufficient to tear along the line 24. Grip member 16 that the user grips with his/her fingers
Since it is made of synthetic resin, there is no risk of damage to the user's fingers. Further, the tongue-like piece 22 formed on the skirt portion 20 of the main body 14 does not constitute a gripping portion of the container lid 12, but is simply used to connect the tip of the synthetic resin gripping member 16. Therefore, it may be significantly smaller than the gripping piece 6 of the known container lid shown in FIGS. Instead, the metal main body 14 can be manufactured by efficiently using a thin metal sheet material (in other words, it can be manufactured using a significantly smaller amount of punched sheet metal material). Thus, according to the container lid 12 according to the present invention, the above-mentioned drawbacks or problems (1) and (2) present in known container lids are simultaneously solved.

Next, with reference to FIG. 7-A and FIG. 7-B,
A method of directly injection molding the gripping member 16 made of synthetic resin at a predetermined position on the tongue-like piece 22 of the metal body 14 and connecting the gripping member 16 to the tongue-like piece 22 at the same time as molding will be described. In such a system, as illustrated in FIG. 7-A, an injection machine 46 is placed within an injection molding cavity 44 defined by closing two mold sections, e.g., a fixed mold section 40 and a movable mold section 42. Before injecting the molten synthetic resin, the tongue-like piece 22 of the metal body 14 is positioned at a predetermined position within the injection molding cavity 44, that is, at a position corresponding to the tip of the gripping member 16. After this, the molten synthetic resin is injected from the injection machine 46 into the injection molding cavity 44, and the gripping member 16 is injection molded. In this way, as shown in FIG. 7-B, the tip of the gripping member 16 touches the tongue-shaped piece 2 of the main body 14.
2, and the gripping member 16 is molded and its tip is connected to the tongue-shaped piece 22 of the main body 14 without taking any other special measures.

In addition, in the specific example mentioned above, the metal main body 1
No. 4 has a weakened line 24 extending in the circumferential direction on its skirt portion 20, so that the skirt portion 20 can be torn by pulling the gripping member 16, but the metal body 14 is For example, as shown in FIG.
A pair of weakened lines 24 may be formed extending substantially diametrically from each of the side edges of 2 through the skirt portion 20 and the top surface portion 18. 9th
Also in the case of the metal body 14 in the form shown in the figure,
The tip of a synthetic resin gripping member (not shown in FIG. 9) is connected to the tongue 22 in the manner described above, and when opening the bag, the main body 14 is pulled by pulling the gripping member. It is torn along a pair of weakened lines 24.

[Brief explanation of the drawing]

FIG. 1 and FIG. 2 are a plan view and a side view, respectively, showing a known easy-to-open container lid. FIG. 3 is a perspective view showing a specific example of a simple container lid according to the present invention, which is plugged into the opening of the container. FIG. 4 is a plan view of the container lid shown in FIG. 3. FIGS. 5, 6, 7-A, and 7-B are cross-sectional views showing how the tip of the gripping member and the tongue-shaped piece of the main body are connected, respectively. FIGS. 8 and 9 are perspective views respectively showing a modified form of the main body to which the tip of the gripping member is connected according to the present invention. 12...Easy-to-open container lid, 14...Metal body, 16...Synthetic resin gripping member, 18...Top portion of main body, 20...Skirt portion of main body, 22...
A tongue-like piece placed on the skirt.

Claims (1)

[Claims for Utility Model Registration] A top surface portion, a cylindrical skirt portion hanging from the periphery of the top surface portion, a relatively small tongue-like piece protruding from the lower end of the skirt portion, and a relatively small tongue-like piece extending along the edge of the tongue-like piece. It consists of an integrally molded metal lid body having a weakened line formed in the skirt portion, and a synthetic resin gripping member connected to the tongue-shaped piece, and by pulling the gripping member. In the easy-to-open container lid whose main body can be torn off, (a) the tongue-like piece has a through hole with a curled peripheral edge, and (b) the synthetic resin gripping member An easy-to-open container lid, characterized in that the tip part penetrates into the through hole of the tongue-like piece and engages to cover the curled part of the through hole.