JP4217327B2 - Container lid - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a so-called snap-on cap that is detachably fitted to a bottle port that is not a perfect circle, and more specifically, an inner seal material in which a membrane for sealing a container port is previously attached to the back surface. It is related with the container lid provided with.
[0002]
[Prior art]
Generally, an aluminum sheet called a membrane is attached to the mouth of a storage bottle of instant coffee, milk powder, cocoa, etc. before opening to prevent the contents from getting wet or oxidizing. It is designed to keep things airtight.
[0003]
The membrane was peeled off from the bottle mouth during use, and the subsequent sealing of the bottle mouth was made by pressing an inner seal material attached to the back surface of the container lid against the upper end surface of the bottle mouth.
[0004]
Here, conventionally, in order to stick the membrane to the mouth of the bottle, the membrane is temporarily fixed to the back surface of the inner seal material in advance, and corresponds to the end of the mouth or the end of the mouth of the membrane. After applying an adhesive to the position, the container lid was put on the bottle mouth. In use, when the container lid is removed from the bottle mouth, the membrane is peeled off from the inner seal material having a weak adhesive force and remains on the bottle mouth, and appears outside with the bottle mouth airtightly closed. It was. In order to attach the container lid to the bottle mouth, when the bottle mouth is circular, screwing is generally used, but in this case, it is troublesome to rotate the container lid and remove it from the bottle mouth. In addition, since the shape of the bottle mouth and the container lid is limited, there is a problem that it is not possible to cope with various shapes of bottles for which the demand for high value-added products in recent years is increasing.
[0005]
Therefore, in such a case, conventionally, the container lid is attached to the bottle mouth by forced fitting. FIG. 10 is a back view showing an example of the container lid 40 that is attached to the bottle mouth by forced fitting in this way. As shown in the figure, the container lid 40 is formed in a horizontally long planar shape, and projections 41 provided on three sides of the inner peripheral wall 40a are formed into an elliptical bottle mouth 31 as shown in FIGS. By engaging with a convex portion 32 provided on the outer periphery of the bottle mouth 31 of the bottle 30 having a bottle, the bottle mouth 31 can be fitted and attached. As described above, by pulling up one side of the container lid 40 where the protrusion 41 is not provided, the inner peripheral wall 40a where the protrusions 41 and 41 face each other is bent outward, and the protrusion 41 and the convex portion 32 are bent. Was disengaged.
[0006]
In addition, there is no membrane attachment function, but what is called a snap-on cap that can be attached to and detached from an elliptical or square bottle mouth with a single touch is disclosed in Japanese Patent No. 2744810 and Utility Model Registration No. 2550184 There was something shown in the issue. These are made by twisting the container lid fitted to a bottle port that is not a perfect circle in either the left or right direction to deform the fitted lower end part (skirt part) and remove the fitting. It is.
[0007]
[Problems to be solved by the invention]
In the conventional container lid described above, in the case shown in FIG. 10 and FIG. 11, the container lid is formed by engaging projections provided on three sides of the inner peripheral wall with the convex portion of the bottle mouth. It is supposed to close. Therefore, there is a problem that it is difficult to ensure the sealing property on the side where the protrusion is not provided.
[0008]
In addition, there is a problem that the resistance force when lifting one side of the container lid is large and it is difficult to remove the container lid from the bottle mouth, and at this time, the inner lid is bent and fixed on the back surface thereof. There was also a risk that the material would peel off. In addition, if the container lid is bent, the membrane bonded to the back of the inner seal material will not peel off from the inner seal material, causing a load on the membrane and causing wrinkles in the center, reducing the product value. There was also the problem of making it happen.
[0009]
In addition, since the container lid shown in Japanese Patent No. 2744810 and Utility Model Registration No. 2550184 is designed to be removed from the bottle mouth by twisting, its attachment / detachment operation is relatively easy during normal use. Although this can be done, when this container lid is used to attach the membrane, a lateral force acts on the membrane joined to the inner seal material at the start of use, and the membrane is attached to the inner seal material only by this lateral force. Since the container lid also has a fitting force with the bottle mouth, it is virtually impossible to overcome these forces and rotate the container lid. There was a problem.
This invention makes it a subject to solve the problem which the said conventional container lid had.
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention according to claim 1 is attached to a bottle port which is not a perfect circle by forced fitting, and is rotated in either the left or right direction with respect to the bottle port. Thus, in the container lid that is configured to release the above-mentioned fitting, an inner seal material with a membrane is attached to the back surface of the main body of the container lid so as to be swingable in a horizontal direction via an elastic holding means. It is characterized by.
[0011]
The invention according to claim 2 is characterized in that, in the configuration of the invention according to claim 1, the elastic holding means is limited to a plurality of spring members provided on a back plate fixed inside the container lid main body. .
[0012]
According to a third aspect of the present invention, in the configuration of the first aspect of the present invention, the elastic holding means is limited to a plurality of spring pieces provided so as to project integrally in the container lid main body. Features.
[0013]
According to a fourth aspect of the present invention, in the configuration of the first aspect of the invention, the elastic holding means is provided on the outside with a spring member that contacts the inner peripheral wall of the container body, and is attached to the inside of the container lid body so as to be swingable. It is limited to the back plate.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on illustrated embodiments.
FIG. 1 is a rear side exploded perspective view of an embodiment of a container lid 10 according to the present invention. As shown in the figure, the container lid 10 includes a main body 1 formed into a square lid shape with a synthetic resin, a back plate 2 attached to the inside of the main body 1, and a lower side of the back plate 2 (upper side in FIG. 1). The inner seal material 3 is held and is in contact with the bottle mouth when the lid is closed to seal the bottle mouth.
[0015]
The main body 1 is provided with protrusions 1b and 1c for engagement with the bottle mouths on four sides of the inner peripheral wall 1a, and holds the back plate 2 above the protrusions 1b and 1c (downward in FIG. 1) so as not to drop off. For this purpose, protrusions 1d and 1e are provided.
[0016]
The inner seal material 3 is formed in an approximately rhombus shape with an elastic material so that the bottle port 31 of the bottle 30 having the elliptical bottle port 31 as shown in FIG. 9 can be closed. On one side (lower surface side) of the inner seal material 3, a bottle-sealing member called a membrane is joined in advance with a weak adhesive force. The membrane 3a is generally formed of an aluminum foil.
[0017]
The back plate 2 is formed to be slightly smaller than the inner shape of the main body 1 so that it can be mounted inside the main body 1, and a curved plate-like spring member 2 a protrudes outward on the four outer sides. So as to be integrated. The spring member 2a may be formed of a metal plate and attached to the back plate 2 later. However, if the spring member 2a is integrally formed with the back plate 2 using a flexible synthetic resin material, the spring member 2a can be manufactured easily. It is desirable because it does not require assembly.
[0018]
The container lid 10 of the present invention constituted by the above-described parts is provided with a back plate 2 and an inner seal material 3 projecting from the back side of the main body 1 in this order on the inner peripheral wall 1a of the main body 1 as shown by arrows in FIG. The protrusions 1d and 1e are assembled by being fitted inside. Thus, the back plate 2 is externally fitted on the inner peripheral wall 1a of the main body 1 and fixed immovably. The inner seal material 3 positioned below the back plate 2 cannot be dropped off by the protrusions 1d and 1e and is horizontal. It is held so that it can swing to some extent in the direction.
[0019]
In the above assembly, the inner seal material 2 is set so that the membrane 3a adhered to the surface is located on the outside.
[0020]
The container lid 10 having the above-described configuration is the position corresponding to the upper end of the elliptical bottle mouth 31 of the bottle 30 or the bottle mouth end of the membrane 3a as shown in FIG. After the adhesive is applied, the membrane lid 3a is adhered to the end of the bottle mouth 31 by fitting the container lid 10 to the bottle mouth 31. In this way, the bottle mouth 31 is airtightly closed, and it is safe to prevent the stored items such as instant coffee and milk powder from getting wet or altered until they are opened to the buyer. To be held.
[0021]
When the container lid 10 is twisted in the lateral direction with respect to the bottle mouth 31 in order to disengage the container lid 10 and the bottle mouth 31 when the use is started over the hand of the purchaser, In the container lid 10, the inner seal material 3 with the membrane 3 a is attached to the container lid body 1 so as to be able to swing in the lateral (horizontal) direction, and therefore the inner seal material in which the membrane 3 a is bonded to the bottle mouth 31. 3 cannot move, and only the main body 1 and the back plate 2 of the container lid 10 rotate as shown in FIG. In this state, since the projections 1b and 1c are disengaged from the convex portion 32 provided on the outer periphery of the bottle mouth 31, the container lid 10 can be pulled up in the direction away from the bottle mouth 31. Therefore, the membrane 3a joined to the inner seal material 3 with a weak adhesive force is easily peeled off from the inner seal material 3 by a force acting in the vertical direction. When the container lid 10 is removed from the bottle mouth 31, the membrane 3a appears outside with the bottle mouth 31 sealed, so that the contents can be taken out by opening the membrane 3a.
[0022]
On the other hand, the inner sealing material 3 of the container lid 10 removed from the bottle mouth 31 has spring members 2a, 2a provided in the diagonal direction of the back plate 2 attached to the back surface of the main body 1, as shown in FIG. By contacting the outer surface, the elastic restoring force restores the original state shown in FIG. Therefore, when the container lid 10 is put on the bottle mouth 31 and pressed downward to be fitted into the bottle mouth 31, the inner seal material 3 is in a state of facing the elliptical bottle mouth 31. The upper end of the mouth 31 is pressed to close the mouth 31.
[0023]
As described above, in the container lid 10 of the present invention, the bottle mouth 31 after the opening of the membrane 3 a is sealed by the inner seal member 3 being pressed against the upper end of the bottle mouth 31.
[0024]
In the above example, the back plate 2 is fitted so as not to move inside the main body 1 and only the inner seal material 3 is swung by the spring member 2a provided on the back plate 2. The back plate itself can be swung to the back surface of the main body by forming the plate 2 in a shape substantially the same as the inner seal material 3 and bringing the spring member 2a projecting on the outside into contact with the inner peripheral wall 1a of the main body 1 You may make it attach to. In this case, the inner seal material 3 may be integrally joined to the back plate in advance, and in this way, the assembly workability can be improved.
[0025]
FIG. 6 is an exploded perspective view of the back surface side of the container lid 20 showing another embodiment of the present invention. As shown in the drawing, in this case, instead of the back plate 2 described above, the elasticity of the inner seal member 3 is achieved by a plurality of spring pieces 11b provided so as to protrude inward from the inner peripheral wall 11a of the main body 11. The holding means is configured. Accordingly, as shown in FIG. 7, the inner seal member 3 held on the inner peripheral wall 11a of the main body 11 by the ridges 11c and 11d is prevented from coming off, and the spring pieces 11b abut on the front, rear, left and right sides as shown in FIG. Thus, the main body 11 is held at a predetermined position. Therefore, when the container lid 20 is twisted in the lateral direction in order to disengage the container lid 20 and the bottle mouth (not shown) as indicated by the arrow in FIG. As in the case, the inner seal material 3 is prevented from moving while being joined to the bottle mouth.
[0026]
Since the subsequent opening operation and closing of the membrane 3a are exactly the same as in the above case, the description thereof is omitted.
[0027]
The spring piece 11b may be formed of a metal plate and attached to the main body 11 later. However, if the spring piece 11b is formed integrally with the main body 11 using a flexible synthetic resin material, the spring piece 11b can be manufactured. This is desirable because it is easy and does not require assembling work. Further, in the other embodiments described above, the container lid 20 without the back plate is illustrated, but a back plate (not shown) may be provided on the back surface of the main body 11 by integral molding. A spring piece serving as an elastic holding means for the material may be further integrally formed on the back plate.
[0028]
In the illustrated embodiment, the inner seal material 3 formed in a substantially rhombus shape so as to close the elliptical bottle mouth 31 is illustrated. However, the inner seal material 3 and the surface thereof are adhered to the inner seal material 3. The membrane 3a only needs to be in contact with a non-circular bottle opening and seal the bottle opening, and needless to say, the shape is not limited to the illustrated embodiment.
[0029]
【The invention's effect】
As described above, the invention according to claim 1 of the present invention is such that the inner seal material is attached to the back surface of the container lid so as to be swingable in the horizontal direction via the elastic holding means. When the fitting with the bottle mouth is removed, the inner seal material does not move, and a force in the direction of peeling the inner seal material from the membrane that is bonded and fixed to the bottle mouth for the first time when the container lid is removed. Therefore, the membrane can be easily peeled off from the inner seal material by the force acting in the vertical direction, and conventionally, in the case of a container lid that is fitted to a bottle port that is not a perfect circle, it has been difficult to introduce The membrane can be attached to the bottle mouth.
[0030]
In the invention described in claim 2, since the spring member serving as the elastic holding means is provided on the back plate attached to the inside of the main body, in addition to the effect of the invention described in claim 1, this kind of container lid is provided. Can be easily manufactured.
[0031]
According to the invention described in claim 3, since the spring piece serving as the elastic holding means is formed integrally with the container lid, the container lid exhibiting the effect of the invention described in claim 1 can be manufactured at a low cost. In addition, there is an effect that the time and labor of assembling is eliminated.
[0032]
In the invention according to claim 4, since the elastic holding means is a back plate provided with a spring member in contact with the inner peripheral wall of the container body on the outside, and an inner seal material is attached to the back plate, The sealing material can be used, and in addition to the effect of the invention described in claim 1, the effect of improving the sealing degree of the bottle mouth is obtained.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a back side showing an embodiment of a container lid according to the present invention.
2 is a rear view of the assembled state of the container lid shown in FIG. 1. FIG.
FIG. 3 is a cross-sectional view taken along line AA ′ of FIG.
4 is a cross-sectional view taken along line BB ′ of FIG.
5 is an operation explanatory view of the container lid shown in FIG. 1. FIG.
FIG. 6 is an exploded perspective view of the back side showing another embodiment of the container lid according to the present invention.
7 is a rear view of the container lid shown in FIG. 6 in an assembled state.
8 is an operation explanatory diagram of the container lid shown in FIG. 6. FIG.
FIG. 9 is a plan view showing an example of a bottle to which a container lid is fitted.
FIG. 10 is a back view showing a conventional example of a container lid.
FIG. 11 is an explanatory view of removing a conventional container lid.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1,11 Main body 1a, 11a Inner peripheral wall 1b, 1c Protrusion 1d, 1e Projection 11b Spring piece 2 Back plate 2a Spring member 3 Inner seal material 3a Membrane 10, 20 Container lid

Claims (4)

A bottomed cylindrical container lid body having a top plate and a side wall is attached by forced fitting to a non-circular bottle mouth, and is rotated in either the left or right direction with respect to the bottle mouth, In the container lid that is designed to be disengaged,
A plurality of protrusions are provided on the inner surface of the side wall,
Inner sealing material with Menburemu is, so as to be rotatable in a horizontal direction with respect to the top plate is held between said plurality of ribs and said top plate in the interior of the container closure body,
An elastic holding means is provided for applying an elastic restoring force with respect to the rotation of the inner seal material to the inner seal material, and holding the inner seal material at a predetermined position with respect to the container lid main body. Container lid.   A back plate is fixed inside the container lid body,
  The back plate is located between the top plate and the inner seal material, and has a plurality of spring members,
  The container lid according to claim 1, wherein the plurality of spring members function as the elastic holding means.   A plurality of spring pieces projecting inward of the container lid body are provided on the inner surface of the side wall,
  The container lid according to claim 1, wherein the plurality of spring pieces function as the elastic holding means.   A back plate located between the top plate and the inner seal material;
  A plurality of spring members in contact with the inner surface of the side wall are provided around the back plate,
  The inner seal material is integrally joined to the back plate,
  The container lid according to claim 1, wherein the plurality of spring members function as the elastic holding means.

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