JPH10114344A - Opening/closing mechanism having presser spring plate for container opening - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the installation of a pair of presser spring plates in order to automatically close the opening of a container after usage, and dispose the plates as they are, together with the container by incineration, etc., by a method wherein the presser spring plate on the outside is formed so as to be self standable, and a pinching piece is fitted on both sides of the pair of the plates. SOLUTION: Both surfaces of a passage body 1 comprising a flexible sheet, which can be opened/closed, are pinched by presser spring plates 5, 6, and the plates 5, 6 are held and joined under a state wherein the plates 5, 6 are bent by a specified curvature. The passage body 1 is closed under a normal state, and when a bar-shaped body 21 such as a straw is inserted in the passage body 1 between the plates 5, 6, the plate 5 on the inside deforms, and the passage body 1 opens, and when the bar- shaped body 1 is pulled out, the passage body 1 is closed by a recovering force of the internal presser spring plate 5. At both ends of the presser spring plate 6 on the outside, engaging parts for the internal presser spring plate 5, are formed, and a pair of pinching pieces 10 are fitted on both sides of the pair of plates 5, 6 under a state wherein the pinching pieces 10 are locked by the engaging parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for opening and closing a container opening which is applied to various containers such as bottles, PET bottles, cans, and paper packs.

[0002]

2. Description of the Related Art Conventionally, the opening of a container such as a bottle, a PET bottle, a can, and a paper pack can be provided with a cap made of a material different from that of the container, a pull-top type opening can be formed, or a straw can be inserted. It is sealed by attaching a sealing seal made of a deposited film or the like.

[0003]

However, bottles and P
When a cap made of a material different from that of the container is attached, such as an ET bottle, it takes time and effort to attach and remove the cap to the container opening, and it is easy to dissipate. Had the drawback of having to dispose of the cap.

[0004] In the case of a pull-top type opening, such as a steel can or an aluminum can, it is easy to dissipate and cannot be closed once opened.
There is a drawback that it is difficult to carry because it is easy to spill, and it is difficult to keep and store and eat it many times.

[0005] Furthermore, in a device in which a straw made of a vapor-deposited film or the like is attached to the opening of a container such as a paper pack so that a straw can be inserted into the seal, if the paper pack is grasped accidentally, the contents will be lost. However, there is a drawback in that it is blown out from the opening into which the straw is inserted and spills out, and it is difficult to dispose of a sealing seal made of a material different from that of the container during disposal after use.

Accordingly, the present inventor has solved the above-mentioned drawbacks by applying Japanese Patent Application Nos. 8-51210 and 8-51211.
No., Japanese Patent Application No. 8-51212, Japanese Patent Application No. 8-72600
No., as shown in each invention of Japanese Patent Application No. 8-125126,
Both sides of the openable and closable passage body made of a soft sheet are sandwiched between a pair of presser spring plates, and the presser spring plates are held in a state of being bent at a predetermined curvature so that they are in close contact with each other, and the passage body is normally closed. When the rod-shaped body is inserted into the passage between the presser spring plates, the inner presser spring plate deforms and the passage body opens, and when the rod-like body is pulled out, the inner presser spring plate is restored to the outer presser spring plate by the restoring force. We have proposed an opening / closing mechanism with a holding spring plate for the container opening that is brought into close contact and the passage body is closed. However, also in the above invention, it has been found that there is a problem that it takes time and effort to assemble the pair of presser spring plates, which impairs mass productivity and makes it difficult for the opening and closing mechanism of each of the above inventions to spread.

The opening / closing mechanism with a holding spring plate for the container opening according to the present invention is intended to solve the above-mentioned drawbacks of the prior art, and the pair of holding spring plates can be assembled very easily, without significantly impairing the function. Another object of the present invention is to provide an opening and closing mechanism with a pressing spring plate for the container opening which can reduce the cost.

[0008]

In other words, the opening / closing mechanism with a presser spring plate of the container opening of the present invention sandwiches both sides of an openable and closable passage body made of a soft sheet with a pair of presser spring plates, and presses the spring plate. Are held in a state of being bent at a predetermined curvature, so that the passage body is normally closed, and when the rod-shaped body is inserted into the passage body between the holding spring plates, the inner holding spring plate is deformed and the passage is closed. When the body is opened and the rod-shaped body is pulled out, the inner presser spring plate is brought into close contact with the outer presser spring plate by the restoring force, so that the opening and closing mechanism with the presser spring plate at the container opening where the passage body is closed is closed. The holding spring plate is formed so as to be self-supporting, and sandwiching pieces are attached to both sides of the pair of holding spring plates.

In the opening / closing mechanism with a presser spring plate for the container opening according to the present invention, the outer presser spring plate has engagement portions of the inner presser spring plate at both ends thereof by injection molding, blow molding, heat molding or the like. In addition, it is also characterized in that the holding pieces mounted on both sides of the pair of pressing spring plates are prevented from falling off by the engaging portions.

[0010] The opening and closing mechanism with a presser spring plate for the container opening portion of the present invention is characterized in that the inner presser spring plate forms a guide piece extending along a guide portion formed in front of the passage body. Is what you do.

[0011] The opening and closing mechanism with a holding spring plate for the container opening according to the present invention is characterized in that the outer holding spring plate has a guide groove formed at the front end of the passage body.

[0012] The opening and closing mechanism with a presser spring plate for the container opening according to the present invention is also characterized in that the holding piece is formed such that an end thereof can be freely opened and closed by a detachable mechanism.

[0013] The opening / closing mechanism with a presser spring plate for the container opening portion of the present invention is characterized in that the presser spring plate is selected from a plastic material, a metal material, or a composite material comprising these materials. .

[0014] The opening and closing mechanism with a holding spring plate for the container opening portion of the present invention is characterized in that the openable and closable passage body made of the soft sheet is formed by attaching two soft sheets at a boundary portion of the passage. And

In the opening / closing mechanism with a presser spring plate for the container opening according to the present invention, the soft sheet may be selected from a rubber sheet, a plastic sheet, a waterproof paper, a waterproof cloth, an aluminum foil or a composite sheet thereof. Features.

According to the opening / closing mechanism with the presser spring plate for the container opening portion of the present invention, the assembly of the pair of presser spring plates is very easy, and the mass productivity is dramatically improved, and thus the cost is greatly reduced. It has become possible to provide an opening and closing mechanism with a holding spring plate for the container opening that can be operated.

Further, according to the opening / closing mechanism with a presser spring plate of the container opening portion of the present invention, it is possible to directly dispose such as incineration together with the container at the time of disposal after use,
After use, the opening automatically closes, so there is no spill even if you grab or carry the container, so you can keep it and store it and eat and drink it multiple times. It has become possible to provide an attached opening / closing mechanism.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an opening / closing mechanism with a pressing spring plate for a container opening according to the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic view showing an example in which an opening / closing mechanism with a pressing spring plate for a container opening (hereinafter referred to as an opening / closing mechanism) of the present invention is applied to a container. (A) shows an example of plastic bags, (A-1) shows a case where the opening / closing mechanism 111 of the present invention is applied to a sheet-like plastic bag 101, and (A-2) provides a circular bottom 103. Opening / closing mechanism 1 of the present invention
11 shows the case where 11 is applied.

(B) shows an example of paper packs.
1) When the opening and closing mechanism 111 according to the present invention is applied to a small paper pack 104 such as a fruit juice beverage, (b-2) is when the opening and closing mechanism 111 according to the present invention is applied to a large paper pack 105 such as milk.
It shows the case where is applied.

(C) shows examples of bottles and PET bottles, and (C-1) shows a case where the opening / closing mechanism 111 of the present invention is applied to a small bottle 106 for a soft drink or the like. )
Is the opening and closing mechanism 11 of the present invention attached to the large PET bottle 107.
1 shows the case where 1 is applied.

FIG. 4D shows an example of paper cups.
This shows a case in which the opening / closing mechanism 111 of the present invention is applied to the lid 109 of the paper cup 108 provided with the above.

The details of the opening / closing mechanism 111 will be described below.

FIG. 2 shows an openable and closable passage body made of a soft sheet, which constitutes the opening and closing mechanism 111.
The passage body 1 can be made by laminating two soft sheets, and the passage portion 2 can be opened in a cylindrical shape. Further, on both sides of the passage portion 2, there are formed shift stoppers 3 which hold the passage body 1 by being sandwiched between presser spring plates described below. Reference numeral 4 denotes a guide portion of the passage body 1 protruding from the position of the slip stopper 3.

As the passage body 1, it is desirable to select a soft sheet to be used from a rubber sheet, a plastic sheet, water-resistant paper, a waterproof cloth, an aluminum foil, or a composite sheet thereof.

In FIG. 2, (a) shows a case where the passage portion 2 of the passage body 1 is closed, and (b) shows a case where the passage portion 2 of the passage body 1 is open and the contents of the container are passing through. The state is shown.

FIG. 3 shows a case where the passage portion 2 of the passage body 1 is heated and welded by bonding two soft sheets together. In the drawing, (a) shows the tapered passage portion 2 which is narrowed toward the opposite side of the guide portion 4. (B)
Indicates a state in which it is squeezed from the portion of the slip stopper 3 toward the opposite side of the guide portion 4 to the passage portion 2.
(C) shows a state in which the slip stopper 3 is also formed on the guide part 4 of (B). (D) shows a state in which the slip stopper 3 is partially formed in the guide portion 4.

The width of the passage portion 2 of the passage body 1 is desirably large enough to allow easy insertion according to the diameter of the rod to be inserted, and to have a sufficient space for ventilation around the inserted rod. In this way, when filling the container with the contents, the contents can be filled from the rod-shaped portion, and the air in the container can be released from the surroundings so that the filling operation can be performed without difficulty.

As a means for forming the passage portion 2 in the passage body 1, a means for bonding two soft sheets and heating and welding at the slip stopper 3 portion is desirable, but it is needless to say that other forming means may be used. It is. When welding the slip stopper 3, it is sufficient to weld only the boundary with the passage portion 2.

FIG. 4 shows an example of a pair of presser spring plates for sandwiching the passage body 1 for opening and closing, particularly for automatically sealing, and a tubular holding piece used for assembling the same. That is, as shown in FIGS. 4 (A), (A), (B) and (C), the outer pressing spring plate 5 bends both ends of a thick molded body by injection molding, blow molding, or heat molding in the left and right directions. And an engaging portion 7 of the inner presser spring plate 6 formed as described above. In the figure, reference numeral 8 denotes a guide groove formed at the upper end of the holding spring plate 5.

As described above, the outer pressing spring plate 5 is
It can be obtained in a state of being bent at a predetermined curvature by resin molding means such as injection molding or blow molding in advance. Of course, it may be heat-formed into a predetermined shape by post-processing. The cross-sectional shape is not limited to an arc shape, but may be a U-shape,
Even if it has a cross-sectional shape such as a V-shape, a wavy shape, or a cylindrical shape, it does not matter if its function is not impaired.

FIGS. 4B, 4A, and 4B show the inner pressing spring plate 6. FIG. This inner presser spring plate 6
It is desirable to make the wall thickness thinner so as to make close contact with the outer pressing spring plate 5. Reference numeral 9 denotes a guide piece formed to face the guide groove 8 of the holding spring plate 5.

4C, (A), (B), (C), and (D) (A), (B), (C) are cylinders mounted on both sides of the pair of pressing spring plates 5, 6. 1 illustrates a sandwiching piece 10 having a shape of a circle. Even if the holding piece 10 is formed into a predetermined shape as shown in FIG. 4C, it is folded into a plate as shown in FIG. The boss 11 and the boss hole 12 may be assembled together. Reference numeral 13 denotes an outwardly inclined portion formed at the upper end on the inner side of the pair of sandwiching pieces 10, and can be easily mounted by being fitted on both sides of the pair of pressing spring plates 5 and 6 from this portion.

In terms of the relationship with the passage body 1, the passage body 1 needs to be thin because it requires flexibility.
6 and the holding piece 10 need to have a predetermined thickness in terms of their functions. Of course, it is desirable that the inner pressing spring plate 6 is also thicker than the passage body 1.

The material of the pressing spring plates 5 and 6 can be selected from a plastic material, a metal material, or a composite material using these as a constituent material. Examples of the plastic material include polyethylene, polypropylene, polyester, polycarbonate and the like. In this case, it is desirable that the passage body 1 is made of the same material.

The thickness of the pressing spring plates 5 and 6 is as follows when a plastic material such as polyethylene is used.
It is desirable to use a material having a thickness of about 0.1 to 5.0 mm and to make the outer pressing spring plate 5 thicker. In the case of a rectangular case, the dimensions of the pressing spring plates 5 and 6 are desirably about 2 to 1.5: 1 in a horizontal axis: vertical axis ratio. For example, the horizontal axis: the actual size of the vertical axis is 40 mm: 25 mm, 35 mm: 20 mm, 3
It can be set to a dimension such as 0 mm: 11 mm.

The radius of curvature when the holding spring plates 5 and 6 are curved is preferably 10 mm to 100 mm. When the curvature is small, the force of the holding spring plates 5 and 6 sandwiching the passage body 1 is strong, and the reaction to the insertion and removal of the rod-shaped body 21 is good. Conversely, by increasing the radius of curvature, it is possible to adjust the force with which the holding spring plates 5 and 6 sandwich the passage body 1 and the amount of force when inserting and removing the rod-shaped body.

In terms of material, the passage body 1 and the holding spring plate 5,
It is desirable to use a single material for both the constituent material 6 and the constituent material of the holding piece 10. For example, a material similar to a plastic or a bag made of a composite material of these and an aluminum foil or the like, which is used in everyday households, etc., is versatile as a material, in terms of workability, processability after garbage, etc. It has been confirmed that the present invention is extremely suitable for solving the above problems.

FIGS. 5 and 6 show a state in which the opening / closing mechanism 111 of the present invention is constituted by sandwiching the passage body 1 between the holding spring plates 5 and 6. FIG. That is, FIGS. 5 (a) and 6 (a) dispose an outer pressing spring plate 5 and an inner pressing spring plate 6 on both sides of the passage body 1, and furthermore, a cylinder on both sides of the pair of pressing spring plates 5 and 6. 1 shows a state in which a holding member 10 having a shape of a circle is attached. FIG.
(B) and FIG. 6 (b) show a state in which the above members are assembled. In the obtained opening / closing mechanism 111, the passage body 1 is curved together with the inner pressing spring plate 6 as the outer pressing spring plate 5 is bent. It is held in an arc shape in the state. By doing so, the holding spring plates 5 and 6 can be held by the tubular holding pieces 10 to reliably maintain their curvature, and the passage body 1 can be firmly pressed.

The operation of the mechanism for opening and closing the container opening of the present invention constructed as described above will be described.

FIGS. 5 (c), 6 (c) and 7 show a state in which a straw or other rod-shaped body 21 is inserted into the passage body 1. FIG. The opening / closing mechanism 111 secures a passage by inserting the rod-shaped body 21 into the passage portion 2 of the passage body 1 to release the passage portion 2 that has been tightly adhered by the pressing spring plates 5 and 6. It is. In this embodiment, a more reliable passage is intended to be secured by using a straw as such a rod 21.

Referring to FIG. 8 for explaining the above operation in more detail, the tip of the rod 21 made of a straw is inserted from the upper end of the guide portion 4 of the passage 1. Actually, a cap or an attachment port is attached to this portion so that the rod-shaped body 21 is easily inserted. Then, as shown in (a) to (c), the rod 21 is gradually pushed down,
The passage portion 2 of the passage body 1 is first expanded together with the guide piece 9 of the inner presser spring plate 6, and then the rod 21 is introduced along the guide groove 8.

When the rod 21 is further depressed,
The inner presser spring plate 6 is pushed out over the entire length along the rod-shaped body 21 so that the contents of the container can freely flow as shown in FIG.

Conversely, when trying to close the container opening, the rod-shaped body 21 may simply be pulled out. That is, the presser spring plate 6 gradually returns to the original position and comes into close contact with the presser spring plate 5, so that the passage portion 2 of the passage body 1 reverses from FIG. Will come into close contact with each other. At this time, when pressure is applied to the opening / closing mechanism 111 provided at the container opening to push the contents out of the container, the pressure is transmitted to the passage body 1 via the holding spring plates 5 and 6, and the passage body 1 is pressed.
The passage portion 2 is further sealed.

[0045]

According to the opening / closing mechanism of the present invention with the holding spring plate for the container opening, the assembly of the pair of holding spring plates is very simple, the mass productivity is greatly improved, and the cost is greatly reduced. It has become possible to provide an opening and closing mechanism with a holding spring plate for the container opening which can be reduced.

Further, according to the opening / closing mechanism of the present invention, which is provided with a presser spring plate for the container opening, it is possible to directly dispose such as incineration together with the container at the time of disposal after use.
After use, the opening automatically closes, so there is no spill even if you grab or carry the container, so you can keep it and store it and eat and drink it multiple times. It has become possible to provide an attached opening / closing mechanism.

When the entire container including the opening and closing mechanism is made of a single material, the manufacturing process is simplified, and the processing after garbage is simplified, so that a highly recyclable container is provided. can do.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an example in which an opening / closing mechanism with a holding spring plate for a container opening portion of the present invention is applied to a container, wherein (a) shows an example of a plastic bag, and (b) shows an example of a paper pack. And (c)
Shows examples of bottles and PET bottles, and (d) shows examples of paper cups.

FIG. 2 shows an openable and closable passage body made of a soft sheet, which constitutes a mechanism for opening and closing a container opening according to the present invention;
(A) is a perspective view and AA cross section showing a state where the passage portion of the passage body is closed, and (B) is a state where the passage portion of the passage body is open and the contents of the container are passing through. FIG.

FIGS. 3A to 3D are schematic perspective views showing a case in which a passage body is bonded by heating two soft sheets together.

4A is an example of an outer pressing spring plate, FIG. 4B is an example of an inner pressing spring plate, FIG. 4C is an example of a tubular girder piece, and FIG.
FIG. 4 is a perspective view, a side view, and a cross-sectional view showing another example of the tubular canyon piece.

FIG. 5A is a perspective view showing how to assemble the opening / closing mechanism.
(B) is a side view in an assembled state, and (C) is a perspective view in a used state.

6A and 6B show another embodiment, wherein FIG. 6A is a perspective view showing a method of assembling an opening / closing mechanism, FIG. 6B is a side view of an assembled state,
(C) is a perspective view of a used state.

FIG. 7 is a view showing a state where a rod-shaped body is inserted into a passage body.
It is an EE enlarged sectional view of (c).

FIGS. 8A to 8D are cross-sectional views showing a state in which a rod is inserted into a passage body in a stepwise manner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Passage body 2 Passage part 3 Detachment stopper piece 4 Guide part 5, 6 Pressing spring plate 7 Engagement part 8 Guide groove 9 Guide piece 10 Nipping piece 11 Engagement boss 12 Boss hole 13 Outer inclined part 21 Rod-shaped body 101, 102 Plastic bag 103 bottom 104,105 paper pack 106 bottle 107 PET bottle 108 paper cup 109 lid 111 opening and closing mechanism

Claims (8)

[Claims] An openable and closable passage body made of a soft sheet is sandwiched between a pair of presser spring plates, and the presser spring plates are held in a bent state at a predetermined curvature so as to be in close contact with each other. When the rod is inserted into the passage between the presser spring plates, the inner presser spring plate is deformed and the passage body is opened, and when the rod is pulled out, the inner presser spring plate is restored by the restoring force. In the opening / closing mechanism with the holding spring plate of the container opening portion in close contact with the holding spring plate so that the passage body is closed, the outer holding spring plate is formed to be self-supporting, and on both sides of the pair of holding spring plates. An opening / closing mechanism with a holding spring plate for a container opening, wherein a holding piece is attached. 2. An outer presser spring plate having engagement portions of an inner presser spring plate formed at both ends thereof by injection molding, blow molding, heat molding, or the like, and a pair of presser spring plates mounted on both sides. 2. The opening / closing mechanism with a holding spring plate for the container opening according to claim 1, wherein the piece is prevented from coming off by the engaging portion. 3. The opening and closing of the container opening with the presser spring plate according to claim 1, wherein the inner presser spring plate is formed with a guide piece extending along a guide portion formed in front of the passage body. mechanism. 4. The opening / closing mechanism with a holding spring plate for a container opening according to claim 1, wherein the outer holding spring plate has a guide groove formed at a front end of the passage body. 5. The opening / closing mechanism with a holding spring plate for the container opening according to claim 1, wherein the holding piece is formed so that its end can be opened and closed by an attaching / detaching mechanism. 6. The opening and closing of the container opening according to claim 1, wherein the holding spring plate is selected from a plastic material, a metal material, and a composite material including these materials. mechanism. 7. The holding spring plate for the container opening according to claim 1, wherein the openable and closable passage body made of a soft sheet is formed by sticking two soft sheets at a boundary portion of the passage. With opening and closing mechanism. 8. The holding spring for the container opening according to claim 1, wherein the soft sheet is selected from a rubber sheet, a plastic sheet, a waterproof paper, a waterproof cloth, an aluminum foil and a composite sheet thereof. Open / close mechanism with plate.