JP2667133B2 - Bottle lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottle cap of a type in which an inner plug for sealing and an outer lid for sealing are integrally incorporated.

[0002]

2. Description of the Related Art There are various types of bottle lids,
Conventional types are roughly classified into a type shown in FIG. 5A and a type shown in FIG. In the type shown in FIG. 5A, the inner plug 21 tightly fitted to the bottle mouth C and the outer lid 22 for sealing are separately manufactured, and in the packaging process, the inner stopper 21 is first put into the bottle mouth. C, and then the outer lid 22 is fitted to the bottle mouth C. In this case, the inner plug 21
A synthetic resin plug 24 having a flange portion 23 formed at the upper end.
And a cover plate 25 made of a metal plate fixed to the upper surface of the plug 24 by caulking.

The outer lid 22 is formed in a cup shape from a thin metal plate, and the skirt portion 26 is sealed by narrowing it into the annular groove C1 of the bottle mouth C. The skirt portion 26 of the outer lid 22 has a weakening line 27 for opening.
Is formed. On the other hand, in the type shown in FIG. 5B, the skirt portion 26 is integrally connected to the flange portion 23 of the inner plug 21, and a cover plate 25 made of a metal plate is caulked and fixed to the flange portion 23. In this case, the inner plug 21 and the skirt portion 26 are connected via an annular first weakening line 28, and the skirt portion 26 has an inclined second weakening line connected to the first weakening line 28. A weakening line 29 is formed.

On the inner peripheral surface of the skirt portion 26 of the outer lid 22, an annular projection 30 fitted in the annular groove C1 of the bottle mouth C is provided.
Are inwardly projected, and are sealed by fitting (plugging) the annular projection 30 into the annular groove C1 against the elasticity of the outer lid 22. In both of these types, a cover plate 25 made of a metal plate is caulked and fixed to the inner stopper 21, mainly for the purpose of improving the easiness of printing and the strength.

[0005] Of these conventional types, the one shown in FIG. 5A has the advantage that the sealing function can be improved by sticking the metal foil 31 to the inner plug 21, but on the other hand,
Since the inner plug 21 is covered with the outer lid 22, the same printing as the cover plate 25 of the inner plug 21 must be performed on the top surface of the outer lid 22, which not only increases the cost of printing but also opens the package. At the time, there is a problem that the outer lid 22 may cause injury.

On the other hand, in FIG. 5B, since the cover plate 25 of the inner plug 21 is always exposed, the printing cost is not increased, and the outer lid 22 is made of synthetic resin, so that it is not injured when opened. I do not. For the above two types, the applicant of the present application has filed a prior patent application (Japanese Patent Application No. 6-26602).
5 (C), a ring in which the flange portion 23 of the inner plug 21 is fitted from below into the upper end of a synthetic resin outer lid 22 manufactured separately from the inner plug 21. A configuration in which a fitting portion 32 having a shape of a circle is formed so as to expose the upper surface of the flange portion 23 of the inner plug 21 has been proposed.

[0007]

According to the prior invention, since the outer lid 22 is made of synthetic resin, not only can the safety after opening be ensured, but also the metal foil 3
1 can be attached, so that the sealing function can be improved. Further, since the material and color of the inner plug 21 can be made different from that of the outer lid 22, the inner plug 21 and the outer lid 22 can be made of a material suitable for fulfilling the function. There is an advantage that the sealing function or the beauty can be improved.

Further, since the inner plug 21 of the type shown in FIG. 5A can be used as it is, there is an advantage that existing equipment can be prevented from being wasted. In addition, it can be manufactured at a lower price than that of FIG. However, in the prior application, since the flange portion 23 of the inner plug 21 is fitted into the fitting portion 32 from below, if the inwardly projecting dimension of the lower edge 32a of the fitting portion 32 is increased, the flange portion 23 is fitted. It becomes difficult.

First, the lower edge 32 of the fitting portion 32
When the inward projecting dimension of a is reduced, the lower end edge 32a of the fitting portion 32 supports the flange portion 23 of the inner plug 21 when the skirt portion 26 is opened and the fitting portion 31 is grasped by hand and then unplugged. Therefore, there is a possibility that only the fitting portion 32 may come off while the inner plug 21 is still fitted to the bottle mouth C.

As described above, the prior invention has an advantage that the sealing function, the sealing function, and the aesthetics can be improved without impairing the safety at the time of opening, but the fitting of the inner plug 21 to the outer lid 22 is also improved. Some problems remained with the certainty and the certainty of unplugging. An object of the present invention is to solve the problems of the prior invention.

[0011]

In order to achieve the above object, the present invention provides an inner cap which is tightly fitted in a bottle mouth and a synthetic resin sealing outer cover which covers the bottle mouth from outside. Plug
A synthetic resin plug having a flange at the upper end, and a cover plate made of a metal plate which is crimped to the flange of the plug from above, while the outer lid is formed by a flange of the inner plug. A ring-shaped fitting portion in plan view that grips the outer peripheral portion of the fitting portion from the outside of the radius, and a skirt portion connected to the lower end of the fitting portion so as to be able to be shredded, on the inner peripheral surface of the fitting portion, A flange portion of the inner plug forms an annular groove to be fitted from above against the elasticity of the fitting portion, and an inner surface of the skirt portion has an annular protrusion or an annular groove on an outer peripheral surface of the bottle opening. Forming an Engaging Portion that Engages Immovably Upward ".

[0012]

With this configuration, in order to enable the flange portion of the inner plug to be fitted into the fitting portion of the outer lid, the inwardly projecting dimension of the upper end edge of the fitting portion must be set to an appropriate value. Since it suffices to set, the inner plug can be securely fitted into the outer lid with the inwardly projecting dimension of the lower end edge of the fitting portion in the outer lid being large.

Since the inwardly protruding dimension of the lower end edge of the fitting portion in the outer lid can be increased, the lower end of the fitting portion is opened when the skirt portion is cut open and the plug is grasped by the outer lid. The edge can reliably support the flange portion of the inner plug, and can be easily removed. Therefore, according to the present invention, in a bottle lid in which a synthetic resin inner plug and an outer lid are separately manufactured and fitted, the advantage thereof, that is, the sealing function and the sealing without impairing the safety at the time of opening can be achieved. There is an effect that the plug can be reliably and easily removed without impairing the advantage that the function or beauty can be improved, and the inner plug can be securely fitted to the outer lid.

By the way, if the outer diameter of the fitting portion of the outer lid is made larger so as to have a larger diameter than the bottle mouth, the fitting portion can be firmly grasped by hand, so that the stopper can be more easily removed. In this case, in the configuration in which the flange portion 23 of the inner plug 21 is fitted into the fitting portion 32 of the outer lid 22 from below as in the prior application, it is limited to increase the outer diameter of the flange portion 23 of the inner plug 21. Therefore, in order to increase the outer diameter of the fitting portion 32, the thickness of the fitting portion 32 must be increased. However, if the thickness of the fitting portion 32 is excessively large, the fitting portion 32 may not be easily deformed, and the inner plug 2 may be more difficult to be fitted.

On the other hand, if the flange portion of the inner plug is fitted into the fitting portion of the outer lid from above as in the present invention, the middle portion can be formed without excessively increasing the thickness of the fitting portion. Since the outer diameter of the fitting portion can be increased only by increasing the outer diameter of the flange portion of the plug, the plug can be more easily removed without impairing the advantage that the inner plug can be easily fitted into the outer lid. .

[0016]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 3 show a first embodiment, and FIG. 1 (A) is a perspective view of the bottle sealing lid 1 in a state of being integrated, FIG. 2 (A)
FIG. 2B is a front sectional front view of the bottle sealing lid 1, FIG. 2B is a longitudinal sectional front view of the bottle sealing lid 1, and FIG.

The bottle lid 1 comprises an inner cap 2 and an outer lid 3 which are separately manufactured and then integrated. Inner plug 2
Is a synthetic resin stopper 4 having an upward opening fitted into the bottle mouth C.
The upper end of the plug 4 is provided with a flange portion 5 corresponding to the top surface of the bottle mouth C, and a cover plate 6 made of a metal plate is fixed to the flange portion 5 by caulking. The flange portion 5 is formed stepwise so that the lower portion has a small diameter. Further, the cover plate 6 is formed in an upwardly convex shape.
A substantially lower half of the plug 4 is covered with a metal foil 7 from below.

The outer lid 3 is provided with a skirt portion 8 which fits into the bottle mouth C from the outside. A ring-shaped fitting portion 9 is formed on the upper end of the skirt portion 8 in plan view. An annular groove 10 into which the outer peripheral edge of the flange portion 5 of the inner plug 2 fits is formed. At this time, the projecting dimension of the upper edge 9a of the fitting portion 9 is set to be small, and the projecting dimension of the lower edge 9b is set to be large. The flange portion 5 of the inner plug 2 is fitted into the annular groove 10 of the fitting portion 9 from above by deforming it against it.

The skirt portion 8 is provided with an annular projection 11 which is fitted in the groove C1 of the bottle mouth C and projects inwardly. C annular groove C1
The bottle is sealed by fitting into the bottle. At the lower edge of the skirt portion 8, an annular rib 12 which is in close contact with the outer peripheral surface of the bottle mouth C is provided so as to protrude inward. A thin-walled first weakening line 13 is formed at the connecting portion between the skirt portion 8 and the fitting portion 9 in the outer lid 3 so as to extend over the entire circumference.
The skirt portion 8 is formed with an inclined second weakening line 14 connected to the first weakening line 13. Therefore, when the lower edge of the skirt portion 8 is pinched and pulled in the circumferential direction, the portions of the weakening lines 13 and 14 are cut off, and the skirt portion 8 is opened, whereby the bottle is opened.

In the above configuration, the inner plug 2 and the outer lid 3 are separately manufactured, and the outer lid 3 and the inner plug 2 are connected by, for example, a cylindrical jig 15 as shown in FIG. By pressing the inner plug 2 into the fitting portion 9 of the outer lid 3 from above while holding the concentric shape, the flange portion 5 of the inner plug 2 can be fitted to the fitting portion 9 of the outer lid 3. . In this case, since the flange portion 5 of the inner plug 2 is fitted into the fitting portion 9 of the outer lid 3 from above, the inwardly projecting dimension of the lower end edge 9b of the fitting portion 9 is set to a large size. The inner plug 2 can be fitted to the lid 3.

Next, the bottle is sealed by plugging the bottle mouth C with a conventionally known stoppering device. Then, after cutting the skirt portion 8 along both the weakening lines 13 and 14,
As shown by the arrow in FIG. 3, the plug is removed by grasping the fitting portion 9 and pulling it upward. In this case, since the inwardly projecting dimension of the lower end edge 9b of the fitting portion 9 can be set to a large size, the flange portion 5 of the inner plug 2 is securely supported by the lower end edge 9b of the fitting portion 9 and easily removed. You can do it.

If the outer diameter of the fitting portion 9 is set to be larger than that of the bottle mouth C, the fitting portion 9 can be firmly grasped by hand. Can be. In this case, according to the present invention, by increasing the outer diameter of the flange portion 5 of the inner plug 2, the outer diameter of the fitting portion 9 can be increased without excessively increasing the thickness of the fitting portion 9. The plug can be more reliably and easily removed without impairing the advantage that the flange portion 5 of the inner plug 2 can be easily fitted into the joint portion 9.

When the bottle sealing lid 1 is closed, the bottle 2 cannot be pushed upward. To remove the bottle 2, for example, the bottle 2 is scratched with a conical tool to remove it. The sealing function for preventing fraudulent acts at the distribution stage is not impaired. FIG. 4 shows another embodiment, in which the upper surface of the flange portion 5 of the inner plug 2 is formed in a stepped shape, and the upper edge 9a of the fitting portion 9 is formed.
And the upper end surface of the flange portion 5 are formed so as to be continuous in a flat state. Forming in this manner has the advantages that the aesthetics can be improved and that dust and dust can be prevented from accumulating on the upper surface. In addition, as shown by a dashed line, a protrusion 6 a may be formed on the upper surface of the cover plate 6.

In each of the above embodiments, the annular projection 11 of the skirt portion 8 is fitted in the annular groove C1 formed in the bottle mouth C. Needless to say, the present invention can also be applied to a bottle sealing lid of a type that is engaged with the formed annular projection.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of the present invention, wherein (A) is a perspective view of a bottle sealing lid in a state where an inner stopper and an outer lid are integrated, and (B) is a separation of the inner stopper and the outer lid. It is a perspective view.

FIG. 2 (A) is an isolated front sectional view of a bottle lid, and FIG. 2 (B) is a longitudinal sectional front view of the bottle lid.

FIG. 3 is a vertical sectional front view in a use state.

FIG. 4 is a sectional view of a main part showing another embodiment of the present invention.

FIG. 5 is a diagram showing a conventional example.

[Explanation of symbols]

 C Bottle mouth 1 Bottle sealing lid 2 Inner plug 3 Outer lid 4 Plug 5 Flange 6 Cover plate 8 Skirt 9 Fitting 10 Ring groove

Claims (1)

(57) [Claims] 1. A synthetic resin stopper having a flange at its upper end, comprising: an inner stopper closely fitted to the bottle opening; and a synthetic resin sealing outer cover covering the bottle opening from the outside. A body and a cover plate made of a metal plate which is crimped to a flange portion of the plug body from above, while holding the outer lid in a plan view of gripping an outer peripheral portion of the flange portion of the inner plug from a radial outside. It comprises a ring-shaped fitting portion and a skirt portion connected to the lower end of the fitting portion so as to be able to be shredded. The inner peripheral surface of the fitting portion has a middle portion against the elasticity of the fitting portion. A flange portion of the stopper forms an annular groove to be fitted from above, and an inner surface of the skirt portion has an engagement portion for upwardly immovable engagement with an annular protrusion or an annular groove on the outer peripheral surface of the bottle mouth. A bottle lid.