JPH0667345U - Container cap - Google Patents

Abstract

(57) [Summary] [Structure] A synthetic resin having elasticity is formed into a circular dome shape, and has a fitting portion 1a with the cap 2 in the central portion,
Inner plug having a downward flange 4 adapted to abut the inner side surface 3a of the container mouth 3 at the peripheral end and an outward flange 5 adapted to abut the upper end 3b of the container mouth 3 at the peripheral end. 1 and a cap 2 having a fitting body 2a for fitting the inner plug 1 in the central portion and a screw portion 2b adapted to be screwed into the screw portion 3c of the container mouth portion 3 on the inner side surface. [Effect] The container can be sealed sufficiently, and even if the screwed portion 2b of the cap 2 is screwed into the screwed portion 3c of the container mouth portion 3 even if the screwed portion is loose, the container can be completely sealed. Can be something.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a cap that is screwed into the mouth of various containers made of glass, synthetic resin, or the like.

[0002]

[Prior art]

 Conventionally, this kind of container cap has a disc-shaped inner plug 1 having a fitting portion 1a for a cap 2 in the central portion and an inner plug 1 in the central portion as shown in FIG. 3, for example. There is a cap 2 having a fitting body 2a and a screw portion 2b which is adapted to be screwed into the screw portion 3c of the container mouth portion 3 on the inner surface. Further, in this container cap, by screwing the threaded portion 2b of the cap 2 into the threaded portion 3c of the container mouth portion 3, the lower surface of the peripheral end of the inner plug 1 is attached to the upper end 3b of the container mouth portion 3. The container is hermetically closed as it is pressed down.

[0003]

[Problems to be solved by the device]

 However, the above-mentioned conventional container cap has a problem that the degree of hermetic sealing of the container is insufficient because the upper end 3b of the container opening 3 is pressed only by the lower surface of the peripheral end of the inner stopper 1. Was there. Further, in the conventional container cap described above, since the lower surface of the peripheral end of the inner stopper 1 merely presses the upper end 3b of the container mouth portion 3, the screw of the cap 2 to the screw portion 3c of the container mouth portion 3 is screwed. If the portion 2b is screwed in loosely, there is a problem that the degree of hermetic sealing of the container becomes incomplete.

Therefore, the present invention has been made in order to solve the problems of the above-described conventional container cap, and makes the container to have a sufficient degree of sealing, and to the screw portion 3c of the container mouth portion 3. It is an object of the present invention to provide a container cap in which the tightness of the container is perfect even if the screw portion 2b of the cap 2 is loosely screwed.

[0005]

Therefore, the container cap of the present invention is formed in the shape of a circular dome by a synthetic resin having elasticity, has a fitting portion 1a with the cap 2 at the center, and Inner plug 1 having a downward flange 4 adapted to abut the inner side surface 3a of the container mouth 3 and an outward flange 5 adapted to abut the upper end 3b of the container mouth 3 at the peripheral edge 1 And a cap 2 having a fitting body 2a for the inner plug 1 in the central portion and a screw portion 2b adapted to be screwed into the screw portion 3c of the container mouth portion 3 on the inner side surface.

[0006]

[Action]

 Since the container cap of the present invention has been subjected to the above-mentioned means, by screwing the threaded portion 2b of the cap 2 into the threaded portion 3c of the container opening portion 3, the downward flange 4 of the inner plug 1 is inserted into the container opening portion 3c. To the inner surface 3a of the. At the same time, the outward flange 5 of the inner plug 1 comes into close contact with the upper end 3b of the container mouth 3. Further, even when the screw portion 3b of the cap 3 is loosely screwed into the screw portion 2a of the container mouth portion 2, the downward flange 4 of the inner plug 1 is in close contact with the inner side surface 3a of the container mouth portion 3.

[0007]

【Example】

 Hereinafter, the structure of the container cap of the present invention will be described with reference to the drawings shown as an embodiment. As shown in FIGS. 1 and 2, the container cap of the present invention comprises an inner plug 1 and a cap 2, and the cap 2 is screwed into the container opening 3 with the inner plug 1 interposed.

The inner plug 1 is formed of a synthetic resin having elasticity into a circular dome shape, has a fitting portion 1 a with a cap 2 in a central portion, and contacts an inner side surface 3 a of a container mouth portion 3 at a peripheral end. The downward flange 4 is formed so as to be in contact therewith, and the outward flange 5 is formed at the peripheral end so as to be in contact with the upper end 3b of the container mouth portion 3. Further, a close contact rib 6 is formed on the lower surface of the outward flange 5 of the inner plug 1 so as to come into contact with the upper end 3b of the container mouth 3.

The cap 2 has a fitting body 2 a with the inside plug 1 at the center and a screw portion 2 b adapted to be screwed into the screw portion 3 c of the container port portion 3 on the inner side surface. Further, a close contact rib 7 is formed on the inner top surface of the cap 2 so as to come into contact with the upper surface of the outward flange 5 of the inner plug 1. Further, in the container cap shown in the embodiment, the rib 8 is formed on the side circumference of the fitting portion 1a of the inner plug 1 and the rib 9 is formed on the side circumference of the fitting body 2a of the cap 2 to form the inner plug. When the fitting body 2a of the cap 2 is fitted into the fitting portion 1a of No. 1, the ribs 8 of the fitting portion 1a pass over the ribs 9 of the fitting body 2a so that the inside plug 1 can rotate in the cap 2. At the same time, the inner stopper 1 does not easily come off from the cap 2.

The container cap of the present invention thus constructed has the top portion of the inner plug 1 formed into a circular dome shape by screwing the screw portion 2b of the cap 2 into the screw portion 3c of the container mouth portion 3. Is pressed against the inner top surface of the cap 2, the inner plug 1 is fitted into the container mouth portion 3, and the downward flange 4 of the inner plug 1 is spread toward the inner surface 3a of the container mouth portion 3, The downward flange 4 of the inner plug 1 is in close contact with the inner side surface 3a. At the same time, the outward flange 5 of the inner plug 1 is pressed against the close contact rib 7 of the inner top surface of the cap 2, and the close contact rib 6 of the lower surface of the outward flange 5 is pressed against the upper end 3b of the container mouth 3. As a result, the outward flange 5 of the inner plug 1 comes into close contact with the upper end 3b of the container mouth 3. Therefore, by fitting the inner stopper 1 into the container mouth portion 3, the container is completely sealed.

Even when the screw portion 2b of the cap 2 is loosely screwed into the screw portion 3c of the container mouth portion 3, the downward flange 4 of the inner plug 1 is attached to the inner surface 3a of the container mouth portion 3. Since they are in close contact, the container will not be incompletely sealed.

[0012]

[Effect of device]

 Since the container cap of the present invention is constructed as described above, the container can be sealed sufficiently, and the cap 2 can be attached to the threaded portion 3c of the container mouth 3. Even if the screw portion 2b is loosely screwed in, the container can be completely sealed.

[Brief description of drawings]

FIG. 1 is a sectional view showing a state in which a container cap of the present invention is screwed into a container mouth.

FIG. 2 is an exploded cross-sectional view showing a state where the container cap of the present invention is removed from the container mouth.

FIG. 3 is a cross-sectional view showing a state in which a conventional container cap is screwed into a container mouth.

[Explanation of symbols]

 1 Inner plug 1a Fitting part 2 Cap 2a Fitting body 2b Screw part 3 Container mouth part 3a Inner side surface 3b Upper end 3c Screw part 4 Downward flange 5 Outward flange 6 Adhesion rib 7 Adhesion rib

Claims (2)

[Scope of utility model registration request] 1. A synthetic resin having elasticity is formed into a circular dome shape, and a fitting portion (1) with a cap (2) is formed at a central portion.
a) and has a downward flange (4) formed at its peripheral end so as to abut the inner surface (3a) of the container mouth (3), and at the peripheral end the upper end of the container mouth (3) ( 3b) an inner plug (1) having an outward flange (5) adapted to abut,
A cap (2) having a fitting body (2a) with the inner plug (1) in the central portion and having a screw portion (2b) screwed into the screw portion (3c) of the container mouth portion (3) on the inner surface ( 2) A cap for a container comprising: 2. A tight contact rib (6) is formed on the lower surface of the outward flange (5) of the inner plug (1) so as to abut the upper end (3b) of the container mouth (3), and the cap (2) of the cap (2) is formed. A tight contact rib (7) is formed at the peripheral edge of the inner top surface to abut against the upper surface of the outward flange (5) of the inner plug (1).
The described container cap.