JP4430856B2 - Plug - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an inner plug that is plugged into a container mouth, and more particularly to an inner plug that can be separately collected.
[0002]
[Prior art]
When the internal stopper attached to the container mouth is separated and collected, if the tab is picked and pulled in the circumferential direction, the longitudinal score formed on the skirt will break, and if pulled further in the same direction, the circumferential score will break To do. In this state, when the tab is pulled upward, the inner plug is easily detached from the container mouth.
[0003]
[Problems to be solved by the invention]
The inner stopper is stoppered and attached to the container mouth. When the stopper is attached, the annular projection receives the resistance of the container mouth, so that the skirt is pushed outward. For this reason, a large diameter expansion force acts on the longitudinal score, and it may break.
Therefore, it is conceivable to reduce the depth of the vertical score groove and increase the thickness of the vertical score. However, if the vertical score is made thicker in this way, it is difficult to break at the time of separation and collection, so that it cannot serve as a vertical score.
[0004]
In view of the above circumstances, an object of the present invention is to prevent breakage of a vertical score at the time of stoppering. Another object is to make the vertical score easier to break during fractional collection.
[0005]
[Means for Solving the Problems]
The present invention relates to an inner plug provided on an inner peripheral surface of a skirt and having an annular convex portion that fits into an annular concave portion of a container mouth portion, and a vertical score provided on the skirt; Is formed with a stepped portion, the annular convex portion is located below the stepped portion, and the skirt is continuous with the upper end of the longitudinal score, and is formed in a circumferential direction flush with the stepped portion. The step includes a tab extending in the circumferential direction for tearing the longitudinal score, and the tab is formed such that an inner peripheral surface and a tip end portion are separated from the skirt. The vertical score formed on the inner side of the step portion is connected to the lower end of the outer peripheral surface of the skirt and the lower end of the inner peripheral surface of the tab so as to prevent the vertical score from being broken at the time of plugging. Provided, and the connecting portion is circumferential in the circumferential direction. A vicinity of the longitudinal score, Ri gradually Do thicker towards the end located from the starting located at the distal end side of the tub to the lower end of the longitudinal score, the starting end side in broken simple structure than the terminal side In addition, the terminal side is formed so as to intersect the longitudinal score .
[0006]
In the vicinity of the vertical score of the present invention, a hinge continuous with the upper lid is provided.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, a reinforcing connecting portion is provided in order to reduce the diameter expansion force applied to the longitudinal score when the stopper is attached. In order to facilitate tearing at the time of separation and collection, the reinforcing connecting portion is gradually formed thicker from the start end toward the end. The reinforcing connecting portion may be any one that can prevent breakage of the vertical score when plugged, and that can be easily broken at the time of separation and collection, and the shape and the like can be appropriately selected as necessary.
[0008]
【Example】
An embodiment of the present invention will be described with reference to FIGS.
The inner plug 1 is formed of a synthetic resin, and includes a skirt 2, a pour cylinder 5 that is continuous to the skirt 2 via a screw portion 4, and a pull ring 7 that is erected on the blocking wall 6 of the pour cylinder 5. It is equipped with.
[0009]
An annular convex portion 9 and a circumferential score 10 are provided on the inner peripheral surface of the skirt 2. The annular convex portion 9 is fitted into an annular concave portion of a container mouth portion (not shown).
A step portion 11 is provided on the outer peripheral surface of the skirt 2. The annular convex portion 9 is positioned below the step portion 11, and the circumferential score 10 is positioned flush with the step portion 11.
[0010]
The step portion 11 is provided with a tab 15 and a vertical score 20. The tab 15 is provided in the lower step portion 11a and is located on the same circumference as the outer periphery circle of the lower step portion 11a. The inner peripheral surface 15 a and the tip end portion 15 b of the tab 15 are separated from the skirt 2, and the inner peripheral surface 15 a is fixed to the skirt 2 via a connecting portion 16.
[0011]
The vertical score 20 is a thin-walled portion formed inside the step portion 11 of the skirt 2 and has, for example, a V-shaped cross section.
[0012]
The vertical score 20 is fixed by the reinforcing connecting portion 22. The reinforcing connecting portion 22 is formed integrally with the inner plug 1 from a synthetic resin, its start end 22a is located on the inside of the tab 15 on the front edge 20a side of the vertical score 20, and its end 22b is the rear edge of the vertical score 20 It is located on the 20b side.
[0013]
The reinforcing connecting portion 22 gradually increases in thickness from the start end 22a toward the end 22b. For example, the thickness t1 of the start end 22a is 0.2 mm, and the thickness t2 of the end 22b is 0.8 mm. The wall thickness t1 is 1/4 of the wall thickness t2 of the end 22b. 2 to 4 are enlarged vertical sectional views of the vertical score 20 and the vicinity of the vertical score 20. 2 is a cross-sectional view taken along line AA in FIG. 1, FIG. 3 is a cross-sectional view taken along line CC in FIG. 1, and FIG. 4 is a cross-sectional view taken along line DD in FIG.
[0014]
In the figure, 25 indicates an inner ring facing the skirt 2, and 26 indicates a slit groove provided in the blocking wall 6.
[0015]
Next, the operation of this embodiment will be described.
After screwing the upper lid (not shown) onto the inner plug 1, the inner plug 1 is plugged into the mouth of the container filled with the contents using a stopper device (not shown).
[0016]
At this time, since the annular convex portion 9 is fitted into the annular concave portion while receiving the resistance of the mouth portion of the container, an outward force (diameter expansion force) acts on the skirt 2. For this reason, a tearing force tends to act on the longitudinal score 20, but since the reinforcing connection portion 22 is provided on the longitudinal score 20, the force is alleviated and therefore does not break.
[0017]
When the contents in the container are used up and collected separately, the tab 15 is picked with a finger and pulled in the circumferential direction. Then, the connecting portion 16 is cut, and a tensile force is applied to the vertical score 20, so that it breaks.
[0018]
At this time, since the reinforcing connecting portion 22 is gradually formed thicker from the start end 22a toward the end 22b, it becomes more difficult to tear toward the end 22b side.
That is, since the start end 22a side is more easily torn than the end 22b side, the vertical score 20 can be easily broken.
[0019]
If the tab 15 is further pulled in the same direction after the longitudinal score 20 is broken, the circumferential score 10 is broken, and the fitting force between the annular concave portion and the annular convex portion 9 is greatly reduced, so that it is easy to come off. Therefore, when the tab 15 is pulled upward, the inner plug 1 is easily detached from the container mouth.
[0020]
This invention is not limited to the inner cap of the screw-type cap, but also a hinge-type cap, that is, a cap having a vertical score on the skirt, and a cap provided with a hinge continuous with the upper lid in the vicinity of the vertical score. Of course, it can also be used.
Further, the reinforcing connecting portion may be any one that can prevent breakage of the vertical score at the time of stoppering, and can be easily broken at the time of separate collection, and the shape thereof can be appropriately selected as necessary.
[0021]
【The invention's effect】
Since this invention is provided with the reinforcement connection part for preventing that a vertical score breaks at the time of a plugging, the vertical score can be prevented from breaking at the time of a plugging. Further, since the reinforcing connecting portion gradually becomes thicker from the start end to the end, the longitudinal score can be easily broken at the time of separating and collecting.
[Brief description of the drawings]
FIG. 1 is a plan view showing a first embodiment of the present invention.
2 is a partial front view of the left half, and the right half is a cross-sectional view taken along line AA of FIG.
3 is a cross-sectional view taken along the line CC in FIG. 1. FIG.
4 is a cross-sectional view taken along line DD in FIG. 1. FIG.
[Explanation of symbols]
1 Inner plug 2 Skirt 15 Tab 20 Vertical score 22 Reinforcement connection

Claims (2)

In an inner plug provided on an inner peripheral surface of a skirt and having an annular convex portion that fits into an annular concave portion of a container mouth portion, and a vertical score provided on the skirt;
A step portion is formed on the outer peripheral surface of the skirt, and the annular convex portion is positioned below the step portion,
The skirt has a circumferential score that is continuous with the upper end of the vertical score and is formed flush with the stepped portion.
The step includes a tab extending in the circumferential direction for tearing the longitudinal score,
The tab is formed such that an inner peripheral surface and a tip end portion are separated from the skirt.
The vertical score formed inside the step portion of the skirt connects the lower end of the outer peripheral surface of the skirt and the lower end of the inner peripheral surface of the tab with a reinforcing connecting portion for preventing the vertical score from being broken when plugged. So that
Further, the connecting portion, in the circumferential direction in the vicinity of the longitudinal score, Ri Do thickened gradually toward the end located from the starting located at the distal end side of the tub to the lower end of the longitudinal score, The inner plug is characterized in that the start end side is more easily broken than the end end side, and the end side is formed so as to intersect the longitudinal score . The inner plug according to claim 1, wherein a hinge continuous with the upper lid is provided in the vicinity of the vertical score.

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