JP4452365B2 - cap - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cap used for closing a container inlet / outlet, particularly a blow molded container inlet / outlet.
[0002]
[Problems to be solved by the invention]
Conventionally, a synthetic resin container represented by a blow-molded container has been widely used as a container having an internal volume of about 20 liters and capable of being handled by hand such as a handbag. And in such a synthetic resin container, the inlet / outlet port is formed in a substantially cylindrical shape on the top side and an outer screw is arranged on the outer periphery, and the inlet / outlet port is provided by a cap having an inner screw screwed to the outer screw. For example, the cap is rotated clockwise and the cap is closed by screwing it into the slot, and the cap is removed by rotating in the opposite direction to open the cap. Like to do.
In addition, in such a container opening / closing opening closing structure that covers the opening / closing opening so as to be openable / closable, there is an internal plug that fits into the inner hole portion of the opening / closing opening. A cap is screwed into the inlet / outlet to secure the sealing state of the inlet / outlet, and the inlet / outlet is opened by removing the inner plug after removing the cap.
[0003]
Furthermore, in the above-described closing structure of the inlet / outlet using the inner plug, the cap and the inner plug must be handled separately when opening and closing, so that the cap and the inner plug can be handled as a set. There is. Examples of this are shown in FIGS. As shown in the figure, the cap 1 has a cap body 3 having an internal thread 2 so that it can be screwed to an external thread on the outer periphery of the container inlet / outlet, and the cap body 3 is disposed inside the cap body 3 so as to be connected to the inlet / outlet. The upper end of the inner plug 4 on the top side of the cap body 3 is opposed to the lower end hook-shaped support means 5 provided on the lower surface of the top of the cap body 3. A hook-shaped locking means 6 is provided, and the cap body 3 and the inner plug 4 are connected by engaging the locking means 6 with the support means 5.
In the cap 1 in which the inner plug 4 is disposed, the inner plug 4 is normally firmly integrated with the cap body 3 so that the inner plug 4 does not move. The cap body 3 may be molded while the center of the mouth and the center of the inner hole of the inlet / outlet are misaligned, and the inner cap 4 is properly fitted in the inner hole that is not concentric with the inlet / outlet. In order to be screwed, the locking means 6 is engaged with the support means 5 in a state that allows deviation, and the inner plug 4 can move slightly in the surface direction of the top of the cap body 3. .
[0004]
However, the cap in which the inner plug is connected in a movable state has the following disadvantages.
That is, since the inner plug is connected to the cap body in a movable state, the cap body and the inner plug are not sealed, and the container contains liquid. In addition to repeatedly handling liquids that are subject to vibrations and frequently pouring out liquids and closing the inlet and outlet with a cap each time they are poured out, The liquid adhering to the inner screw of the cap main body may wrap around between the inner cap and the cap main body, and may accumulate on the top surface of the cap main body side of the inner cap. In addition, the liquid of the contained liquid may enter the space between the cap body and the inner plug, and then condense due to temperature change or the like and accumulate on the upper surface of the inner plug.
[0005]
In the above-described blow molded container having a relatively large internal volume, the same contents are not always accommodated as a form of use, but a cap with a liquid remaining on the upper surface side of the inner plug is accommodated in another type. When the container is screwed into the inlet / outlet of the container, the liquid remaining on the cap side may leak into the container and alter the contents.
In addition, the above-mentioned container and cap having a large internal capacity for repeated use are cleaned to remove the residual liquid of the stored contents before the new use. The cleaning liquid used for the cleaning enters the space between the cap body and the inner plug, and there arises a problem that it becomes very difficult to take out the cleaning liquid that has once entered the space. Of course, if the cleaning liquid remaining on the cap side also leaks to the contents side of the container, the contents may be altered.
Accordingly, the present invention has been made in view of the above circumstances, and an object thereof is to make it possible to easily remove an inner plug disposed inside a cap body when necessary, and between the cap body and the inner plug. An object of the present invention is to make it possible to easily remove the liquid and the like that has entered, and to prevent deterioration and fouling of the contents accommodated in the container.
[0006]
[Means for Solving the Problems]
The present invention has been made in consideration of the above problems, and has a cap body that has an internal thread that is screwed to an external thread provided on the outer periphery of a container outlet and that can be screwed to the inlet and outlet . A cap comprising locking means for locking to support means arranged in a circle around the center of the cap on the lower surface of the top part and having an inner plug that can be fitted into the access port, the inner plug has a cross-sectional shape. The outer peripheral portion that rises upward from the periphery of the bottom plate portion that is convex and curved upward is tapered and the upper surface is opened, and the upper plate is provided on the bottom plate portion of the inner plug. A locking means is detachably engaged with the support means, and a lower end of the inner plug has one end located on the peripheral side of the bottom plate portion whose height position is lower than the center of the bottom plate portion. characterized in that means are provided Providing cap is intended to solve the above problems.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described in detail based on the embodiment shown in FIGS. 3 and 4 are denoted by the same reference numerals, and the description thereof is omitted.
As shown in FIG. 1, in the present invention, the inner plug 4 has an upper surface in which the outer peripheral portion rising upward from the periphery of the bottom plate portion whose shape is convex and curved upward is widened in a tapered shape. The inner plug 4 is provided with a locking means 6 that is detachably locked to the support means 5 of the cap body 3 and a knob means 7. First, the supporting means 5 is provided in an arc shape on the lower surface of the top of the cap body 3 at the same distance from the center of the cap, arranged in a circle around the center of the cap, and further corresponds to the supporting means 5. Thus, the locking means 6 is provided in a cylindrical shape (see FIG. 3), and the hook 6b provided at the upper end of the cylindrical portion 6a is detachably locked to the hook 5a at the lower lower end of the support means 5. It is provided as follows.
The hook 5a of the support means 5 and the hook 6b of the locking means 6 are not firmly locked to each other, and the inner diameter of the hook portion of the support means 5 is as shown in FIG. The outer diameter of the cylindrical portion 6a of the locking means 6 is set to be larger, so that the inner plug 4 can move relative to the top of the cap body 3, and the hooks are deeply locked. Since it is not suitable, the locking means 6 can be engaged with and disengaged from the support means 5.
[0008]
1 and 2 , the knob means 7 is a bottom surface on the container side of the inner plug 4 and the bottom plate portion whose height position is lower than the center of the bottom plate portion of the inner plug 4 One end is provided on the peripheral side of the, and has a hole 8 that can be fingered. In this way, the knob means 7 is provided on the inner plug 4 and the locking means 6 of the inner plug 4 is detachably locked to the support means 5 of the cap body 3. If the inner plug 4 and the cap body 3 are pulled in opposite directions while holding, the engagement relationship between the support means 5 and the locking means 6 is cut, and the inner plug 4 and the cap body 3 are separated. Each can be cleaned independently.
In order to assemble the inner plug 4 to the cap main body 3, the inner plug 4 may be set and pushed in such that the locking means 6 of the inner plug 4 corresponds to the support means 5 of the cap main body 3. The support means 5 and the locking means 6 are engaged by a simple pushing operation, and the cap body 3 and the inner plug 4 are integrated.
[0009]
In the present invention, the picking means is not limited to the one having a hole that can be fingered .
[0010]
【The invention's effect】
As described above, according to the cap of the present invention, the cap main body having an internal screw that is screwed to the external screw provided on the outer periphery of the container inlet / outlet and can be screwed to the inlet / outlet, and the top of the cap main body . in the cap comprising a plug inner can put fitted to the loading and unloading opening has a locking means for locking the support means are arranged in a circle and around the cap center lower surface, said inner plug, the cross-sectional shape is upwardly The outer peripheral portion that rises upward from the periphery of the bottom plate portion that is convex and curved toward the upper surface is formed in a tapered shape so that the upper surface is open, and the engagement member provided on the bottom plate portion of the inner plug disengageably engaged locking means on said support means, the lower surface of the inner plug, knob means for one end around the side of the bottom plate portion height position of the center of the bottom plate portion is lower is located It is characterized in that is provided Because it is a thing, it is possible to separate the inner plug and the cap body by a simple operation of pulling with the picking means, and it has entered between the cap body and the inner plug and accumulated while using the cap. It is easy to remove liquids and can be cleaned reliably. Caps can be provided for reuse without accumulating liquids between the cap body and the inner plug. It is effective.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing, in section, an embodiment of a cap according to the present invention.
FIG. 2 is an explanatory view showing a lower surface side of the inner plug.
FIG. 3 is an explanatory diagram showing a conventional example.
FIG. 4 is an explanatory view showing a conventional example in section.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Cap 3 ... Cap main body 4 ... Inner plug 5 ... Support means 6 ... Locking means 5a ... Hook 6a ... Cylindrical part 6b ... Hook 7 ... Picking means

Claims (1)

A cap body that has an internal thread that is screwed to an external screw provided on the outer periphery of the container entrance and exit, and can be screwed to the entrance and exit, and is arranged in a circle around the center of the cap on the bottom of the top of the cap body In the cap comprising the locking means for locking to the support means and the inner plug that can be fitted into the access port,
The inner plug has a shape in which the outer peripheral portion that rises upward from the periphery of the bottom plate portion that is convex and curved upward in the cross-sectional shape is tapered and the upper surface is opened,
Removably engaging said engaging means provided on the bottom plate portion of the inner plug the supporting means, the lower surface of the inner plug, the bottom plate portion height position of the center of the bottom plate portion is lower A cap characterized in that a picking means having one end located on the peripheral side of the cap is provided .

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