JP2580577Y2 - Child resistant cap - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called child-resistant cap, which requires a certain action as well as swiveling of the cap when opening, and cannot be easily opened by infants. The present invention relates to a child resistant cap that can be easily opened and closed and that can be easily formed.

[0002]

2. Description of the Related Art A so-called child resistant cap, which cannot be easily opened by infants, is used for containers containing medicines or the like in order to prevent accidental ingestion by infants due to the nature of the contents. ing. As such a cap, for example, a cap is known in which two inner and outer caps are combined, and the outer cap is pressed to engage with the inner cap to integrate the inner and outer caps so as to be detachable. Based on this structure, as an improvement, a projection is provided on the inner and outer caps for clockwise rotation for closing, and the outer cap is pressed against the side wall of the inner and outer caps to open the cap. There is known one provided with a projection that engages in a clockwise rotation (Japanese Utility Model Publication No. 55-46595).

[0003]

However, in the above cap, when a projection for closing is provided on the side wall,
The inner and outer caps need to be sufficiently engaged in order to reliably close the plug, and the projections provided on the inner and outer caps must be large. For this reason, when the inner cap is engaged with the outer cap, it cannot be easily engaged, and there is a risk of poor fitting or breakage. Further, if the projections are made small to facilitate engagement of the two caps, the projections do not engage with each other when the plug is closed, and only the outer cap idles, so that the plug may not be reliably closed. Further, when a projection for closing is provided on the top plate, rotation must be applied while pressing the top plate at the time of closing, and the plugging operation is complicated, and there is a risk of idling.

Further, in such a two-piece cap,
When opening the cap, the outer cap is deformed, the projections provided on both are engaged, and the inner cap is rotated together with the outer cap. It is difficult to achieve both the flexibility that can be easily deformed by the above and the rigidity normally required for the cap.

Accordingly, it is an object of the present invention to provide a child resistant cap in which the above-mentioned problems have been solved. Another object of the present invention is to prepare a cap,
It is an object of the present invention to provide a child-resistant cap in which an inner cap and an outer cap can be easily integrated.
Still another object of the present invention is to provide a child resistant cap which requires less material for forming the cap and has a sufficient function as a cap.

[0006]

According to the present invention, an outer cap formed by a top plate and a skirt hanging from the top plate, and a container mouth accommodated in the outer cap and engaged with a screw are provided. And an inner cap detachably attached to the outer cap. The skirt portion of the outer cap comprises a thick rigid portion and a thin easily deformable portion formed thereunder. An engagement step portion is formed on the inner surface of the thin, easily deformable portion, and a lower end inner surface is provided with an inwardly protruding projection. The inner surface is provided with a screw portion for screwing with the container mouth, and the outer surface of the inner cap is provided with an annular projection and an engaging projection located below the annular projection. And a recess is formed on the outer surface of the lower end of the inner cap. , The annular projection of the inner cap,
The lower surface is provided so as to face the upper surface of the engaging step of the outer cap, and the engaging step of the outer cap and the engaging projection of the inner cap are engaged only by turning in the cap closing direction. The projection provided at the lower end of the easily deformable portion of the outer cap is formed on the outer surface of the lower end of the inner cap by pressing the easily deformable portion inward and deforming it. A child resistant cap is provided that is configured to engage with a recessed portion. In the present invention, the thin easily deformable portion is most preferably formed in a bellows shape, and the thin easily deformable portion is hereinafter referred to as a bellows portion.

[0007]

The cap of the present invention presses the bellows-like portion provided at the lower part of the skirt portion of the outer cap, and fits the projection inside the outer cap into the concave portion provided at the lower part of the inner cap to integrate the inner and outer caps. It is opened. When the cap is closed, the step is provided on the inner and outer caps and the projection is engaged to close the cap. In the present invention, since the inner cap has a cylindrical shape without a top plate, the inner cap can be easily inserted and fitted into the outer cap as compared with the one having the top plate, and the engagement step and the engagement projection are formed. Engagement can be adjusted reliably. Further, since the inner cap has a cylindrical shape without a top plate, the height of the skirt of the inner cap can be made sufficiently smaller than the height of the skirt of the outer cap, and the material for forming the cap can be reduced. it can. Further, the skirt portion of the outer cap has a bellows shape in which the lower portion is easily deformed by pressing, but the upper portion has rigidity. The cap can be pressed and deformed, and the cap can be reliably opened.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In FIG. 1 showing a side view and a partial cross-sectional view (A) of an example of the outer cap of the child resistant cap of the present invention, and an X-X view (B), the outer cap generally denoted by 1 is a top plate. Part 2 and skirt part 3,
On the inner surface of the top plate, a liner 4 for maintaining the sealing property of the cap
Is provided. The skirt portion 3 is composed of a rigid upper portion 6 having a knurl groove 5 on the outside and a lower portion 7 having a thin and bellows shape. An engagement step 8 is provided inside the skirt upper part 6 and can be engaged in a clockwise turn protruding inward. When the outer cap is turned clockwise, that is, when the cap is closed, the inner cap is closed. The inner cap is also configured to engage with the engaging protrusion provided on the inner cap so that the inner cap also rotates together. At the lower end of the skirt lower portion 7 having a bellows shape, a projection 9 is provided which protrudes inward, and when the bellows portion 7 is pressed, the projection moves inward.

In FIG. 2 showing a side view and a partial cross-sectional view (A) of an example of the inner cap, and a view taken in the direction of the arrow YY (B), the inner cap indicated as a whole by 11 is a cylindrical skirt 12. And a screw portion 13 for screwing to the container mouth portion is provided inside the skirt portion 12. An annular protrusion 14 is provided on the outer upper portion of the skirt portion 12 for vertically engaging with the upper surface of the engaging step of the outer cap, and protrudes outward below the annular protrusion 14. An engaging projection 15 is provided, and a recess 16 is provided at the lower end. When the outer cap is turned clockwise, the engaging projection 15 engages with the engaging step of the outer cap, and the inner cap also turns clockwise integrally. The concave portion 16 is configured to engage with the projection 9 when pressing the bellows portion 7 of the outer cap, and to rotate counterclockwise, that is, when rotating while pressing the outer cap in the opening direction of the cap, the inner cap also rotates integrally. ing.

FIG. 3 shows a side view and a partial cross-sectional view (A) of an example of the child-resistant cap of the present invention in which an outer cap and an inner cap are combined, and FIG. The length of the skirt portion is formed to be higher than the bellows portion of the outer cap from the step 17 provided on the outer cap top plate portion. In this state, the inner cap is not detached from the outer cap by the engagement step 8 of the outer cap, but can freely move up and down in the outer cap. ZZ arrow view (B) (Liner of outer cap is not shown for simplicity)
As is apparent from FIG. 4, the engaging step 8 of the outer cap is in a state of being engaged with the engaging projection 15 of the inner cap.

Next, in FIG. 4 showing a side view and a partial cross-sectional view in a state where the cap of the present invention is applied to the container mouth, the screw portion 13 provided on the inner cap 11 is replaced with the screw portion 19 of the container mouth 18. This shows that the screwing is completely completed and the cap is completely closed. In this state, the annular projection 14 of the inner cap is engaged with the upper surface of the engagement step 8 of the outer cap, and the inner cap is controlled to move downward from this state. The container is strongly pressed against the liner to maintain the tightness of the container. To open the cap, use the bellows part 7 of the outer cap.
Is pressed inward, and the protrusion 9 provided inside the bellows portion 7 is pressed.
Is engaged with the concave portion 16 provided at the lower part of the inner cap 11, and the outer cap is turned counterclockwise, so that the inner cap also turns integrally with the outer cap, and the cap can be opened.

The child resistant cap of the present invention is not limited to the example shown in the drawings, but may be provided with an engaging step, a projection and a recess as appropriate. For example, the projections provided at the lower part of the outer cap are provided at four places in the figure,
Depending on the diameter of the cap, a larger number may be provided, and it is of course possible to increase the number of recesses provided in the inner cap in response to this. The bellows portion provided on the outer cap is more easily deformed inward than when the skirt portion is simply provided with a thin wall, and the opening operation can be facilitated.

Both the outer cap and the inner cap are separately molded by injection molding, compression molding or the like of a synthetic resin, and used in combination. Examples of the molding resin include, but are not limited to, thermoformable resins such as medium- or high-density polyethylene, isotactic polypropylene, and ethylene-propylene copolymer.

[0014]

According to the present invention, the cap can be easily deformed by pressing while having rigidity as the cap, and it is possible to reliably perform a certain operation required when the cap is opened. . Moreover, the projection to be engaged when opening is
Since there is no contact unless the cap is deformed,
The plugging operation can be performed smoothly. Furthermore, since the inner cap has a cylindrical shape, there is an advantage that the material cost can be reduced and the cap can be easily manufactured.

[Brief description of the drawings]

FIG. 1 is a view showing an example of an outer cap of the cap of the present invention.

FIG. 2 is a view showing an example of the inner cap of the cap of the present invention.

FIG. 3 is a view showing an example of the cap of the present invention.

FIG. 4 is a view showing a state in which an example of the cap of the present invention is applied to a container mouth.

[Description of sign]

 DESCRIPTION OF SYMBOLS 1 Outer cap 7 Bellows part 8 Engagement step 9 Projection 11 Inner cap 14 Annular projection 15 Engagement projection 16 Concave part

Claims (2)

(57) [Scope of request for utility model registration] An outer cap formed from a top plate and a skirt hanging from the top plate; an inner cap housed in the outer cap and detachably attached to the container mouth by screw engagement. The skirt portion of the outer cap comprises a thick rigid portion and a thin easily deformable portion formed below the thick skirt portion, and an engagement step portion is formed on an inner surface of the thick rigid portion. An inwardly protruding projection is provided on an inner surface of a lower end of the thin easily deformable portion, and the inner cap is formed of a cylindrical body having both ends opened. And a screw portion for screwing is provided,
On the outer surface of the inner cap, an annular protrusion and an engagement protrusion located below the annular protrusion are provided, and a concave portion is formed on the outer surface of the lower end of the inner cap, The annular projection is provided so that the lower surface thereof is in surface contact with the upper surface of the engagement step of the outer cap, and the engagement step of the outer cap and the engagement projection of the inner cap are in the cap closing direction. The protrusion provided at the lower end of the easily deformable portion of the outer cap is formed so as to be engaged only by turning, and the inner cap lower end outer surface is formed by pressing the easily deformable portion inward and deforming the same. A child resistant cap, which is formed so as to be able to engage with a recess formed in the child resistant cap. 2. The cap according to claim 1, wherein the engagement projection of the inner cap is provided continuously to a lower end of the inner cap.