JP2008302972A - Spring plate-type easily openable can - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clean and easily openable can. <P>SOLUTION: A spring work is given to a portion of a cover plate becoming a drinking opening of the easily openable can. When the outer circumference of the cover plate is cut and separated for opening, the cover plate of the drinking portion rolls up by elasticity of the spring to be compactly accommodated in the can. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an easy open can that can be opened cleanly and easily by applying a spring to the lid of the easy open can.

Easy open cans such as for beverages can be opened by pulling a pull tab (pull top) to separate part of the opening from the cover plate, and at the same time, the cover plate separated by the action that caused the pull tab is placed inside the can. In addition to a push-in method (for example, Patent Document 1), an easy-open type can (hereinafter referred to as a new type can) provided by Japanese Patent Application Laid-Open No. 2007-3923071 uses a pair of new type cans or an opener with an opener There is a system (for example, Patent Document 2) in which a part of the lid plate is separated from the lid plate and then the lid plate separated using a pull tab or the like is pushed into the inside of the can.
Moreover, the opening of the easy open cans for foods includes a method in which the opening is separated from the cover plate by a pull tab or a new can method, and then the cover plate is separated from the can body by a pull tab or the like (for example, Patent Document 3).

By the way, the opening of the above-mentioned easy open can needs improvement in the following two points.
One is that the act of pushing the separated cover plate into the can with a pull tab causes the cover plate to be deeply immersed in the beverage or food that is the contents of the can, creating a sense of filth.
Secondly, the opening of the new can has two steps of opening work: separating the part of the lid plate of the opening as opening work and pushing the lid plate separated by a pull tab etc. into the inside of the can. It takes.
JP 2006-1586 A Japanese Patent Application Laid-Open No. 2007-3923071 and Japanese Patent Application No. 2007-148821 JP 2000-128168 A

As described above, the act of pushing a part of the outer periphery of the opening of the lid plate that becomes the drinking mouth and outlet of the easy open can and pushing the separated lid plate downward inside the can with a pull tab or the like The surface of the lid that is in contact with it is in direct contact with drinks and food, which is unsanitary and impairs cleanliness.
In addition, the opening of the new can requires two steps, that is, an operation of separating a part of the cover plate of the opening and an operation of processing the separated cover plate, which is troublesome and impairs convenience.

  Therefore, in order to solve such a problem, the present invention has previously processed a cover plate portion separated as a drinking mouth and a take-out port, and a part of the outer periphery of the opening portion of the cover plate is cut off for opening. At that time, the separated lid plate part is wound around the lid plate fixing part by the elasticity of the spring, or folded, and the separated lid plate is less likely to come into direct contact with drinks and foods, improving hygiene. At the same time, by the automatic processing of winding or folding the separated cover plate by the elasticity of the spring, the push-in operation using a pull tab or the like is not required, and the two-stage operation of opening is eliminated.

  As described above, since the opening itself is automatically made by the elasticity of the spring after the lid plate portion that becomes the drinking mouth and the outlet of the easy open can is separated from the lid plate according to the present invention, Is a so-called easy open end that can be completed in one operation, and the simplicity and ease of opening is a great improvement.

  In addition, the present invention makes it possible to roll up the separated lid at the fixed lid portion on the top of the can or to fold it compactly by utilizing the elasticity of the spring, so that the separation lid remains in the form of a plate with a pull tab just below the inside of the can. Unlike the conventional method of pushing into the lid, it is possible to minimize the chance that the lid touches drinks and food. That is, the effect of relieving the unclean feeling when opening is extremely large.

  One element of the present invention is that the cover plate is partially made into a spring, but the “spring” in the present invention stores energy that only acts to “wind” or “fold” the separated cover plate. The “lid” may be in various forms such as “spring processing the lid plate itself” or “lid plate spring plywood” in which a leaf spring is attached to the lid plate.

  Furthermore, unlike a permanent spring that is used repeatedly, the spring may be premised on a single use and does not require any particular restrictions such as the type, material, or processing of the spring.

  Next, embodiments of the technical idea of the present invention will be described with reference to the drawings, taking a new can as a representative example.

  FIG. 1 is a perspective view showing a part of a beer can according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of a central portion thereof.

  There are several forms of the new can, but in the form of FIGS. 1 and 2, the chuck wall of the tightening portion that connects the can body and the cover plate bulges slightly inward 8 over about a half circumference, and the opening At this time, the rupture line (score) 4 of the bulging portion is pressed by the pressing projection 7 of another can, and the outer periphery 4 of the drinking mouth is torn (expressed as Example 1 in the specification of Japanese Patent Laid-Open No. 2007-3920701) Is.) In this embodiment, the technical idea of the present invention is added to this embodiment.

  The new cans are rotated relative to each other in the state in which two new cans, that is, the cans to be opened and the cans to be opened, are vertically stacked, so that the pressing protrusions 7 of the upper cans are annular stepped portions 8 of the cans to be opened. By pressing a break line (score) 4 provided on the outer periphery, a part 4 of the outer periphery that becomes a drinking mouth of the lid plate is cut and separated.

  And the cover plate part 2 separated as a drinking mouth of the cover plate is previously spring-processed in a spiral shape, and when the can lid is formed into a flat plate shape, energy is added. When the outer periphery 4 serving as a drinking mouth is broken and separated due to the opening, energy is released for the first time, and the lid plate is caught and the drinking mouth is opened.

  The present example is a new type can similar to Example 1 and a food can based on the same form, and will be described with reference to FIGS.

  FIG. 3 is a longitudinal sectional view of the center of an easy open can related to a round three-piece can for food, and FIG. 4 is a plan view thereof.

  This example is the same as the first example in terms of the function and opening operation of the new can and avoids repeated explanations. However, the top and bottom lids of the three-piece can are different from ordinary food cans as a new can as shown in FIG. It has the shape and function.

  The difference from the first embodiment is that the opening lid 50 is opened outwardly and the processing of the spring is opened in consideration of the fact that the opening is mainly a food outlet, and that the shape of the can is relatively flat. The leaf spring is bent along the folding line 95 of the lid.

  That is, in the first embodiment, the lid plate portion separated as a drinking mouth is spring-processed with a surface, whereas in the second embodiment, a part of the lid plate to be separated is spring-processed with a straight line, or “lid” This is what is supported by “leaf spring plywood”.

  FIG. 5 is different from Example 2 in that the opening lid 50 is bent with a flat plate, whereas the present embodiment is different in that it is a winding method.

  In the present embodiment, since the enveloping method is adopted, the opening lid 20 to be separated can be springed evenly on the surface, and a part of the energy is not required, so that the production cost can be reduced compared with the second embodiment. it can.

  Although the technical idea of the present invention has been described for the new can, the present invention is not limited to these examples.

It is a perspective view which fractures | ruptures and shows a part of beer can which concerns on a 1st Example. It is a longitudinal cross-sectional view of the center part of the beer can shown in FIG. It is a front sectional view of a round 3 piece for food according to a second embodiment. It is a top view of the round three-piece can for food shown in FIG. It is a front sectional view of a round three-piece can for food according to a third embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Can body 2 Cover plate 3 separated as a spout 3 Spout 4 Break line (score), outer periphery of the spout 5 Cover plate 6 engulfed by spring elasticity 6 Chuck wall 7 Pressing protrusion 8 Swelling portion 10 Food can body 20 Can lid 30 separated as take-out port Take-out port 40 Break line (score)
50 Cover plate 55 bent by the elasticity of the spring 55 Cover plate 60 wound by the elasticity of the spring 60 Chuck wall 70 Pressing protrusion 75 Bottom cover 80 Annular step 90 Upper cover fixing part 95 Bending line

Claims (1)

  The lid plate part that is opened as the drinking mouth or outlet of the easy open can is processed by spring, and when the outer part of the opening part such as the drinking mouth is cut off, the separated lid plate part becomes the elasticity of the spring. An easy-open can characterized in that a drinking mouth or a taking-out mouth is opened by being wound or folded around the lid plate fixing portion.

Images