JP4452366B2 - 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. An example of this is shown in FIG. As shown in the figure, the cap 1 is disposed inside the 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 outlet, and the cross-sectional shape is upward. And an inner plug 4 that can be fitted into the access port in a shape in which the outer peripheral portion that rises upward from the periphery of the bottom plate portion that is convex and curved toward the top extends in a tapered shape to open the upper surface. An annular ridge 5 is provided on the inner wall surface of the cap body 3 so as to extend in the circumferential direction of the cap body 3, and the flange 6 at the upper end of the inner plug 4 is connected to the ridge 5 and the top of the cap body. The cap body 3 and the inner plug 4 are connected to each other by engaging the flange 6 with the ridge 5 by fitting in the recess between the cap 6 and the protrusion 5.
In the cap 1 in which the inner plug 2 is disposed, normally, the inner plug 4 is 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 hook portion 5 is engaged in the loosely engaged state, and the inner plug 4 can be moved slightly in the surface direction of the top portion 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, a cap body which can be screwed to the loading and unloading opening has an internal thread is screwed to the outer thread provided on the outer periphery of the loading and unloading opening of the container, the cross-sectional shape is upwardly An outer peripheral portion that rises upward from the periphery of the bottom plate portion that is convex and curved toward the upper surface, and is formed of an inner plug positioned inside the cap body with the upper surface being opened in a tapered shape . The cap body is provided in the required part on the outer periphery of the stopper so that the locking flange protrudes outward, and the cap flange can be inserted into and removed from the cap body in the cap body height direction. A protrusion that can be continuously locked in the circumferential direction by a locking flange is provided, and when the locking flange is located at the opening, the inner plug can be inserted into and removed from the cap body, and the locking located at the opening. Hula And the locking flange is configured to engage the projections when located in the convex side of the di-rotate movement, the lower surface of the inner plug, the height position of the center of the bottom plate portion lower The present invention provides a cap characterized in that a rotating operation means having one end positioned on the peripheral side of the bottom plate portion is provided to solve the above-mentioned problems.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described in detail based on the embodiment shown in FIGS. Note that the same components as those in the conventional example shown in FIG.
As shown in FIG. 1, a locking flange 7 projecting outward is extended from the flange portion 6 of the inner plug 4, and the two locking flanges 7 face each other with the center of the inner plug 4 in between. The length along the flange 6 of each of the locking flanges 7 is set to be slightly smaller than a quarter of the circumference of the flange 6.
Moreover, in the cap main body 3, the protruding item | line 8 is provided in the circumferential direction of the cap main body at the inner wall upper part, and this protruding item | line 8 is not what is continuous in the circumferential direction of the cap main body. These are arranged in the circumferential direction alternately with the open portions 9 where the ridges 8 are not provided (see FIG. 4). The opening width of the opening 9 along the circumferential direction of the cap body is set to be longer than the length of the locking flange 7, whereby each of the locking flanges 7 of the inner plug 4 is opened. If the state corresponds to the portion 9, the locking flange 7, that is, the inner plug 4 can be removed from the cap body 3. Further, when the inner plug 4 is rotated from the state in which the locking flange 7 is disposed in the open portion 9, the locking flange 7 enters between the ridge 8 and the top of the cap body 3, The entering locking flange 7 is provided so as to be locked to the ridge 8.
[0008]
Thus, by rotating the inner plug 4 with the locking flange 7 applied to the opening 9, the inner plug 4 can be attached to the inside of the cap body 3. The inner plug 4 is rotated from the state in which the inner plug 4 is attached and the locking flange 7 is positioned at the opening portion 9 so that the inner plug 4 can be detached from the cap body 3. 4 is very easy to attach and detach. As shown in FIGS. 1 and 4, the locking flange 7 locked to the ridge 8 can come into contact with the tip of the ridge 8 in the opening rotation direction of the cap body 3. The stopper 10 is provided, and the positioning of the inner plug 4 with respect to the cap body 3 is simplified so that the inner plug 4 does not rotate more than necessary.
3 denotes a rotation operation means provided on the lower surface of the inner plug 4, and the rotation operation is performed on the peripheral side of the bottom plate portion whose height position is lower than the center of the bottom plate portion of the inner plug 4. One end of the means 11 is located so that the rotation operation means 11 can be held to facilitate the rotation of the inner plug 4, and the locking flange 7 of the inner plug 4 can be easily aligned with the opening 9. It is what.
[0009]
【The invention's effect】
As described above, according to the cap of the present invention, the cap main body having an inner screw that is screwed to the outer screw provided on the outer periphery of the container inlet / outlet, and capable of being screwed to the inlet / outlet, and the cross-sectional shape upward An outer peripheral portion that rises upward from the periphery of the bottom plate portion that is convex and curved toward the upper side spreads in a tapered shape and is formed of an inner plug that is open on the upper surface and is located inside the cap body. In the required part of the outer periphery of the cap, the locking flange is provided so as to protrude outward, and the cap flange is inserted into the cap body from the open part that allows the locking flange to be taken in and out in the height direction of the cap body. Convex ridges that can be locked in the direction by the locking flange are provided so that when the locking flange is positioned at the opening, the inner plug can be inserted into and removed from the cap body. And the locking flange is configured to engage the projections when located in the convex side of Nji rotate moved, the lower surface of the inner plug, the height position of the center of the bottom plate portion lower Since the rotation operation means having one end located on the peripheral side of the bottom plate portion to be provided is provided , the inner plug and the cap body can be easily operated by rotating the inner plug. Can be separated or an inner plug can be assembled to the cap body. Therefore, it is easy to remove the liquid that has entered the cap body and the inner plug during use of the cap, and cleaning can be performed reliably. The cap can be provided for re-use without accumulating liquid or the like, and thus has an excellent practical effect.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing an embodiment of a cap according to the present invention.
FIG. 2 is an explanatory view showing, in section, a state in which an inner plug is assembled.
FIG. 3 is an explanatory view showing the lower surface of the plug.
FIG. 4 is an explanatory view schematically showing a locking flange, an opening portion, and a protruding line.
FIG. 5 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 7 ... Locking flange 8 ... Projection 9 ... Opening part 10 ... Stopper 11 ... Rotation operation means

Claims (1)

A cap body having an internal screw that is screwed to an external screw provided on the outer periphery of the container outlet and the outlet, and a bottom plate portion having a shape in which the cross-sectional shape is convex and curved upward The outer peripheral part that rises upward from the periphery spreads out in a taper shape and is made of an inner plug that is open on the upper surface and is located inside the cap body. The locking flange can be locked continuously in the circumferential direction of the cap body from the open part in which the locking flange can be taken in and out in the height direction of the cap body. Provided with a ridge, when the locking flange is located in the open portion, the inner plug can be inserted into and removed from the cap body, and the locking flange located in the open portion is rotated and positioned on the ridge side. Locking flange have been configured to lock the projections in, on the lower surface of said plug, one end around the side of the bottom plate portion height position of the center of the bottom plate portion is lower is located A cap characterized in that a rotation operation means is provided .

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