JPS6117016Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a container opening mechanism, for example, a mechanism provided in the bottom wall of a pudding container to form an aperture for air inlet.

[Prior Art] An opening mechanism that forms an opening in a part of an arbitrary wall of a container and communicates the inside of the container with the outside through this opening,
For example, it is used in pudding containers.

[Problem that the invention aims to solve] This opening mechanism has an extremely simple structure, as all that is required is to form an opening in the target wall that allows air to circulate. but,
Since the openings are required to be formed smoothly by a simple operation, it is not always possible to form any structure simply by forming the openings.

For example, a typical problem with conventional examples of this type of opening mechanism is that an external force is applied to a finger post erected on the target wall, and a part of the wall is removed along with the finger post. In this case, a part of the cut wall caves into the container and damages the contents stored in the container, which is an inconvenience.

This will be explained with reference to FIG. 5, which shows a conventional example.

As shown in the figure, in the prior art, a symmetrical circumferential groove 15 is provided on the inner surface of the portion of the blocking wall 7 in which the finger post 2 is erected, and the thinned portion is formed by the circumferential groove 15. It is a part that can be cut.

For example, if this finger post 2 is pressed leftward to form an opening, the left base end of the finger post 2 will be the base edge line 6, and the right base end portion will be the cut portion 9. This pressing force against the finger holding post 2 lifts the cut portion 9 upward using the proximal edge line 6 portion as a fulcrum,
The cutting section 9 will be cut,
Since the circumferential grooves 15 are symmetrical and have the same depth,
The proximal edge line 6, which should serve as a fulcrum, was often cut by the pressing force and sank into the container, damaging the contents.

[Means for Solving the Problems] The present invention was devised to eliminate the drawbacks of the conventional example described above, and in order to form an opening, an opening is made to a finger post that is integrally erected on the wall. The direction of action of the finger hooking force, which is an external force for forming the hole, is regulated, and the fulcrum of the tipping displacement of the finger hooking column due to this finger hooking force is configured to be the proximal edge line of the finger hooking column on the finger hooking direction side. .

The unsealing mechanism according to the present invention is an unsealing mechanism that forms an opening in a closing wall 7, which is an arbitrary wall portion of the container 12, to communicate between the inside and the outside of the container 12, and has at least one opening on the outer surface of the closing wall 7. A finger resting post 2 with a straight proximal edge line 6 on the side of the finger resting direction is provided upright, and a finger resting post 2 is provided in a straight line along the proximal edge line 6 on the inner surface of the portion of the closing wall 7 where the finger resting post 2 is provided. A circumferential groove consisting of the fulcrum groove 10 and the arcuate groove 8 along the arcuate proximal edge line 5 other than the proximal edge line 6 is cut, and the groove edge line 11 of the fulcrum groove 10 on the finger hooking direction side is cut. The finger hook post 2 is located slightly below the base edge line 6, and the cut portion 9 formed by cutting the circular groove 8 is located close to the circular base edge line 5. It's on.

[Function] Since the opening mechanism 1 according to the present invention has the above-described configuration, for example, as in the embodiment shown in FIG. 2 and overturns the finger post 2, the proximal edge line 6 is located on the outside of the groove edge line 11, so the proximal edge line 6 becomes a thick blocking wall. Therefore, the proximal edge line 6 does not sink into the container 12, but remains positioned on the closing wall 7 and acts as a fulcrum for the tipping and rotational displacement movement of the finger rest 2.

Therefore, due to the lever action of the finger hooking force acting on the upper end of the finger hooking post 2 and the fulcrum action of the proximal edge line 6, a large lifting force acts on the inside of the circular arc groove 8, and this lifting force causes the cutting portion to 9 is cut to form a through hole in the closing wall 7, and the unsealed state is achieved.

As described above, in the opening mechanism 1 according to the present invention, the proximal edge line 6, which is the rotational fulcrum for the falling movement of the finger post 2, remains located on the thick closing wall 7, so that the proximal edge line 6 side The lower end of the finger hook post 2 never sinks into the container 12 due to the action of the finger hook force, and therefore the contents of the container 12 are never damaged.

In addition, since the proximal edge line 6 is straight,
The function as a fulcrum when the finger rest post 2 falls down can be stably achieved, and thereby the opening operation by overturning the finger rest post 2 can be achieved stably and smoothly.

[Example] An example of the present invention will be described below with reference to the drawings.

The opening mechanism 1 according to the present invention has a closing wall 7 as a bottom wall connected to the lower end (upper end in FIG. 1) of a cylindrical wall 13, as shown in FIG. A leg tube 14 having a height greater than that of the opening mechanism 1 is integrally molded with the closing wall 7 of a container 12 serving as a pudding container, which is suspended from the leg tube 14 .

The container 12 shown in FIG. 1 is in an inverted position, and the opening located at its lower end is already open.

FIG. 2 is a longitudinal sectional view showing an example of the structure of the bottom portion of the container 12 shown in FIG. 1, including the closing wall 7. As shown in FIG.

As described above, the unsealing mechanism 1 according to the present invention is generally installed integrally with the closing wall 7 that is the bottom wall of the container 12, and is used to remove the contents such as pudding from the container 12 by dropping them due to their own weight. In order to facilitate the escape of the contents from the container 12,
It is provided to easily make a through hole in the closing wall 7.

An example of the opening mechanism 1 according to the present invention is shown in FIGS. 3 and 4.

As is clear from FIGS. 3 and 4, the unsealing mechanism 1 according to the present invention includes a finger-holding post 2 integrally erected at a desired location on the outer surface of a closing wall 7, and a blockage on which the finger-holding post 2 is erected. It is composed of a fulcrum groove 10 cut into the inner surface of the wall 7 portion and a circumferential groove consisting of an arcuate groove 8.

The finger-hanging post 2 has a base edge line formed between the proximal end of the finger-resting post 2 that is erected on the closing wall 7 and the outer surface of the closing wall 7, and the finger-hanging force that acts on the finger-hanging post 2 at least. The proximal edge line 6 is straight at the portion facing the direction side.

In the case of the illustrated embodiment, the finger-holding post 2 has a shape in which a part of the circumferential surface on the side in which the finger-holding force is applied is cut out along a plane over the entire height range from a truncated conical column, and therefore, The circumferential surface of the finger post 2 is a flat circumferential surface 4 on the side facing the finger post 2, and the rest is an arcuate circumferential surface 3.

Since this flat circumferential surface 4 intersects the outer surface of the closing wall 7 as it is, the base edge line of the finger holding post 2 is made into a straight base edge line 6.

The remaining proximal edge line crosses the outer surface of the closing wall 7 along the arcuate circumferential surface 3 to form an arcuate proximal edge line 5.

On the other hand, the fulcrum groove 10 is cut parallel to the proximal edge line 6 on the lower surface of the blocking wall 7 located below the finger post 2, and the groove edge of the fulcrum groove 10 on the finger post 2 direction side. The line 11 is set to be located at a position slightly below the finger rest 2 than the proximal edge line 6.

In the illustrated embodiment, the fulcrum groove 10 is cut to a depth approximately equal to the wall thickness of the closing wall 7, thereby positioning the groove edge line 11 as close as possible to the proximal edge line 6. , This is because when a through-hole is opened in the closing wall 7 by applying a finger-holding force to the finger-holding post 2, the portion between the proximal edge line 6 and the groove edge line 11 easily breaks, causing the finger-holding post 2 to break. This is to enable the overturning operation to be achieved more smoothly.

Further, the arcuate groove 8 has a thin cut portion 9 formed in the closing wall 7 by cutting the arcuate groove 8.
is formed by cutting near the arcuate base edge line 5 so as to be formed along the arcuate base edge line 5.

In the illustrated embodiment, the cutting portion 9 is the arcuate proximal edge line 5.
This is to make it easier to manufacture a mold for integrally molding the opening mechanism 1 with the container 12, and the operating function of the cutting part 9 is as follows.
It goes without saying that it may be closer to the arcuate proximal edge line 5.

[Effects of the invention] As is clear from the above explanation, the opening mechanism 1 according to the invention does not cause the part of the blocking wall 7 to collapse into the container 12 at all, so that the part of the closing wall 7 does not collapse into the container 12 during the opening operation. It is possible to safely open the package without causing any damage to the product.Furthermore, since the finger post 2 serves as a fulcrum for the tipping operation and the proximal edge line 6 is a straight line, the finger post 2 can be easily opened during the tipping motion. is achieved stably and smoothly, and furthermore, the opening mechanism 1 of the present invention has a finger-holding post 2 erected on the outer surface of the closing wall 7, and a circumferential groove-shaped closing wall on which the finger-holding post 2 is erected. Since it is composed of the circular arc groove 8 and the fulcrum groove 10 cut into the inner surface of the 7 parts, this structure is extremely simple and has many excellent effects such as being easy to mold. It is.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view showing a container having an opening mechanism 1 according to the present invention in an inverted position, Fig. 2 is a vertical cross-sectional view of the bottom portion of the example shown in Fig. 1, and Fig. 3 is a middle view of Fig. 2. , FIG. 4 is an enlarged plan view of an embodiment of the present invention indicated by a circle, FIG. 4 is a vertical sectional view of the same, and FIG. 5 is a vertical sectional view of a conventional example. Explanation of the code, 1: Opening mechanism, 2: Finger post,
3: arc circumferential surface, 4: flat circumferential surface, 5: arc base edge line,
6: proximal edge line, 7: closing wall, 8: arcuate groove, 9: cutting section, 10: fulcrum groove, 11: groove edge line, 12: container.

Claims (1)

[Scope of utility model registration request] This is an opening mechanism that forms an opening that communicates the inside and outside of the container 12 in a closing wall 7 that is an arbitrary wall portion of the container 12, and has a proximal edge line on the outer surface of the closing wall 7 at least in the finger hooking direction. 6 is a straight line, and a fulcrum groove 10 is provided in a straight line along the proximal edge line 6 on the inner surface of the portion of the closing wall 7 where the finger rest 2 is provided. A circumferential groove consisting of an arcuate groove 8 along the arcuate proximal edge line 5 other than the proximal edge line 6 is cut, and the groove edge line 11 on the finger hooking direction side of the fulcrum groove 10 is aligned with the proximal edge line 6. The cut portion 9 formed by cutting the circular groove 8 is positioned slightly below the finger post 2, and the cut portion 9 formed by cutting the circular groove 8 is placed slightly below the circular base edge line 5.
An opening mechanism located close to.