WO2016194192A1

WO2016194192A1 - Cap seal

Info

Publication number: WO2016194192A1
Application number: PCT/JP2015/066164
Authority: WO
Inventors: 岡田　真一
Original assignee: ミズホ金属株式会社
Priority date: 2015-06-04
Filing date: 2015-06-04
Publication date: 2016-12-08

Abstract

Provided is a cap seal that does not require a dedicated fastening machine or removal tool and is capable of giving notification if a fraudulent act on the drum has occurred. The cap seal, which is fitted together with a bunghole of a drum, is provided with: an elastic resin ring with a prescribed thickness; an elastic resin cover that is connected to the upper surface of the ring by circular arc-shaped connecting sections and multiple small connecting sections, and is provided with a pull; and multiple bent elastic resin pieces disposed on the lower surface of the ring at intervals in the circumferential direction of the ring.

Description

Cap seal

The present invention relates to a cap seal that fits into a base portion of a drum can.

The base of a drum can that contains various substances such as oil, chemicals, drinking water, paint, and grain is composed of an annular flange, and a thread groove is provided inside this flange, and a gasketed plug is placed in this thread groove. In general, the base is sealed by screwing.

The plug with gasket that is screwed into the flange of the base part is fitted with a cap seal that protects the plug from rainwater and the base part is sealed.

A metal cap seal is applied to the cap seal of a conventional drum can as described in Patent Documents 1 to 3.

Since a metal cap seal is applied in this way, a dedicated tightening machine is required to attach the cap seal to the flange constituting the base part.

Also, since the metal cap seal once mounted is firmly fixed to the flange, a tool or the like is generally required to remove the cap seal.

In this way, the cap seal is firmly fixed to the flange of the base part, so that a third party can easily remove the cap seal from the flange, easily take out the contents in the drum can, There was an advantage that it was difficult to perform fraud such as replacement.

On the other hand, Patent Document 4 discloses a cap seal made of synthetic resin or the like.

Since the resin cap seal has a certain degree of elasticity, a dedicated tightening machine is not required when mounting the resin cap seal to the flange of the base, and it can be easily mounted on the flange manually. become. Furthermore, a tool is not required for removal from the flange, and it can be removed manually.

However, since it can be easily attached to and detached from the flange manually as described above, there arises a problem that it is possible to easily perform an illegal act by the third party described above.

If a dishonest act is performed by a third party, the contents in the drum can be replaced with other raw materials, and the drum can is shipped to the destination as it is, it can easily become a major problem at the shipping destination. Can understand.

Therefore, even if there is a fraudulent act by a third party, if the administrator of the drum can know the fact that there was a fraud, the problem that the drum can be shipped with the contents replaced, etc. Does not occur.

The cap seal disclosed in Patent Document 4 is made of resin, so that a dedicated tightening machine and a removal tool are not required. However, there is no means for notifying the fact that there has been a fraud, and the above problem cannot be solved. .

JP 2003-81314 A Japanese Utility Model Publication No. 6-78970 JP-A-9-110059 JP 2010-195464 A

The present invention has been made in view of the above-described problems, and provides a cap seal capable of notifying a fact that there has been an illegal act on a drum can while eliminating the need for a dedicated tightening machine or a removal tool. It is an object.

In order to achieve the above-mentioned object, a cap seal according to the present invention is a cap seal fitted to a base portion of a drum can, and has a predetermined thickness and a resin-made ring body, and the ring body. The upper surface of the ring is connected via an arc-shaped connecting portion and a plurality of point-like connecting portions, and has a handle and an elastic resin lid, and the lower surface of the ring body is spaced in the circumferential direction of the ring. And a plurality of bent pieces made of resin having elasticity.

The cap seal of the present invention is made of a resin having elasticity, and therefore can be easily attached manually without requiring a dedicated tightening machine for mounting on the flange of the base portion of the drum can. In addition, when removing from the flange, it is possible to remove it easily by hand without requiring a removal tool.

Here, specific examples of the resin include polypropylene (PP), polyethylene (PE), polyacetal (POM), nylon (PA), and polyethylene terephthalate (PET).

The cap seal of the present invention includes a ring body having a predetermined thickness, and a lid body connected to the upper surface of the ring body via an arc-shaped joint portion and a plurality of point-like joint portions, and the lower surface of the ring body Is provided with a plurality of bent pieces made of resin which are arranged at intervals in the circumferential direction and have elasticity.

When a third party inserts a tool or the like between the flange of the base part and the cap seal to remove the cap seal, the ring body is firmly fixed to the flange via a plurality of bent pieces. A plurality of dot-like connecting portions connecting the ring body and the lid body are broken in advance.

And, it is impossible to restore the point-like joint that has been irreversibly broken.

On the other hand, the arc-shaped joint portion having a certain arc length does not break and maintains the state in which the ring body and the lid body are joined, and the lid body rotates from the ring body using the arc-like joint portion as a pivot point. While being separated.

The point of breakage when a third party breaks the point-like joint and separates the lid from the ring body, takes out the contents in the drum, and replaces them with other contents. Since the connecting portion cannot be restored, the manager of the drum can know the fact that the fraud has occurred by confirming that the connecting portion is broken.

Note that drums are often stored for a long time with cap seals attached to their caps, and in some cases, metal plugs may rust. The plug must be replaced.

In such a case, in order to easily remove the cap seal from the flange of the base part, the lid is provided with a handle, and the administrator actively uses the handle to pull the lid upward. By breaking the point-like connecting portion and pulling it further, the engagement of the bent piece with the flange can be released, and the cap seal can be removed from the flange.

¡After removing the cap seal, replace the plug, and manually install the new cap seal on the flange to complete the plug replacement.

In a preferred embodiment of the cap seal according to the present invention, the ring body has a thickness of 1 mm to 6 mm.

The cap seal is made of resin, and is manufactured by integrally forming the ring body or lid body including the bent pieces that are the constituent elements, the arc-shaped joint portion, and the plurality of point-like joint portions by injection molding or the like. Is done.

Here, the present inventors have found that injection molding becomes difficult when the thickness of the ring body exceeds 6 mm.

On the other hand, when the thickness of the ring body is less than 1 mm, for example, when the handle is pulled, there is a high possibility that the ring body will be stretched before the dotted joint is broken and the entire cap seal is removed from the flange. Become. In such a case, a third party may misconduct the contents in the drum can, and in the process of attaching the cap seal to the flange, there is no breakage of the dotted joint, so the fact that there was an illegal act may be notified. become unable.

From the above, the thickness of the ring body is specified in the range of 1 mm to 6 mm.

In another embodiment of the cap seal according to the present invention, a vent is formed in the lid.

The plug that seals the base is generally made of metal. Therefore, if the drum can is stored for a long time with the cap portion sealed with the cap seal, the metal plug may rust due to the influence of moisture in the space between the plug and the cap seal.

When the plug rusts, it is customary to replace it with a new plug at the final shipment stage of the drum.

The cap seal of the present embodiment is provided with a vent hole in the lid constituting the cap seal in order to prevent such rusting of the plug.

The number of the vent holes may be one or plural, and the size of the vent holes is preferably set to a size that does not easily cause moisture that leads to rust of the plug in relation to the number of vent holes.

In another embodiment of the cap seal according to the present invention, the handle can be bent at its base.

During the storage process of drum cans, maintenance such as wiping of the outer periphery is regularly performed, and the upper surface of the drum can provided with the base is also wiped off in the same manner.

The handle of the lid constituting the cap seal extends to the side, but when wiping the upper surface of the drum can, the handle extending to the side may obstruct the wiping.

Therefore, in the cap seal of the present embodiment, the handle is foldable at the base, so that the handle is not obstructed during wiping by bending the handle upward and wiping. It is possible.

Also, in another embodiment of the cap seal according to the present invention, at least the lid is transparent.

At least when the lid is transparent, it can be easily confirmed whether or not the plug is rusted, for example, when the drum can is shipped.

Furthermore, in another embodiment of the cap seal according to the present invention, a tip of the bent piece is provided with a tapered surface inclined upward from an end facing the outside to an end facing the inside of the cap seal. .

Since the tip of the bent piece has a tapered surface inclined upward from the outer side to the inner side of the cap seal, the gripping force on the base (flange) by the bent piece increases, It is possible to make it difficult to remove the ring body once attached from the base part. Therefore, in the case of unauthorized use by a third party, it is possible to ensure that only the dot-like connecting portion is broken while maintaining the engagement state of the ring body to the base portion.

As can be understood from the above description, according to the cap seal of the present invention, it is possible to notify the manager of the fact that there has been an illegal act on the drum can while eliminating the need for a dedicated tightening machine or a removal tool. .

It is the perspective view which looked at the cap seal of this invention from diagonally upward. It is the perspective view which looked at the cap seal of this invention from diagonally downward. It is a side view of the cap seal of this invention. It is a longitudinal cross-sectional view of the cap seal of this invention. It is the enlarged view of the V section of FIG. 4, Comprising: It is the figure which showed the state which bent the bending piece inside. It is the longitudinal cross-sectional view which showed the state which attached the cap seal to the nozzle | cap | die part of a drum can. It is an enlarged view of the VII part of FIG. It is the longitudinal cross-sectional view which showed the state by which the dotted | punctate connection part fractured | ruptured and the cover body was lifted up from the ring body via the circular arc-shaped connection part.

Hereinafter, embodiments of the cap seal of the present invention will be described with reference to the drawings. Although the illustrated cap seal is provided with a vent hole in the lid body, it is needless to say that it may be a cap seal made of a lid body that does not include the vent hole. Further, the cap seal shown in the figure has the tip of the bent piece provided with a tapered surface, but it goes without saying that the bent piece may not have a tapered surface at the tip.

(Embodiment of cap seal)
1 and 2 are a perspective view of the cap seal of the present invention viewed obliquely from above and a perspective view viewed from obliquely below, respectively, FIG. 3 is a side view of the cap seal, and FIG. 4 is a longitudinal section of the cap seal. FIG. 5 is an enlarged view of a portion V in FIG. 4 and shows a state where the bent piece is bent inward.

A cap seal 10 shown in the figure is connected to an elastic resin ring body 1 and an upper surface of the ring body 1 via an arc-shaped connecting portion 4 and a plurality of point-like connecting portions 3, and includes a handle 6. The resin cover body 2 having elasticity, and a plurality of elastic resin bent pieces 5 disposed at intervals on the lower surface of the ring body 1 in the circumferential direction of the ring. Has been.

The entire cap seal 10 is integrally formed by injection molding a resin material. Here, the resin forming the cap seal 10 is polypropylene (PP), polyethylene (PE), polyacetal (POM), nylon (PA), polyethylene terephthalate (PET), or the like.

Since the cap seal 10 is made of an elastic resin, it can be easily installed manually without the need for a dedicated tightening machine for mounting on the flange of the cap portion of the drum can, unlike a metal cap seal. In addition, when removing from the flange, it can be easily removed manually without requiring a removal tool.

The cap seal 10 is transparent as a whole. The cap seal 10 is transparent, so that when the drum can be stored while the cap seal 10 is mounted on a metal plug screwed into the base of the drum can, the plug seal rusts outside. Therefore, the rust of the plug can be easily visually confirmed, and the plug can be surely replaced with a new one as necessary when the drum can is shipped.

In addition, although the handle 6 is fixed to the lid 2, the handle 6 may be bent at its base (attachment portion to the lid 2). When the upper surface of the drum can is periodically wiped, the handle 6 is bent upward to be wiped off so that the handle 6 does not become an obstacle during wiping.

In addition, the lid body 2 has a plurality of air holes 2a. With this vent hole 2a, it is possible to prevent moisture from getting into the space between the plug and the cap seal 10 and rusting the plug.

In FIG. 5, the thickness t1 of the ring body 1 is set in the range of 1 mm to 6 mm.

When the thickness of the ring body exceeds 6 mm, injection molding becomes difficult, so 6 mm is set as the upper limit value of the thickness of the ring body 1.

If the thickness of the ring body is less than 1 mm, for example, when the handle 6 is pulled, the ring body 2 is fully extended before the dotted joint 3 is broken, and the entire cap seal 10 is removed from the flange. The possibility increases.

When a third party tries to pry off the cap seal 10 illegally, the dotted joint 3 is irreversibly broken in advance to inform the administrator that the drum can be tampered with. Is the role of the dot-like connecting portion 3. Therefore, if the thickness of the ring body is less than 1 mm and the point-like connecting portion 3 extends before it breaks, and the entire cap seal 10 is removed from the flange, whether or not fraud has been performed by a third party is determined. Since it cannot be confirmed, 1 mm is the lower limit of the thickness of the ring body.

In FIG. 5, the thickness t2 of the dotted joint 3 is 0.5 mm or less and can be set to about 0.1 to 0.3 mm.

As shown in FIG. 5, the bent piece 5 is connected to the ring body 1 through a bent portion 5b.

Further, the bent piece 5 has a tapered surface 5a having an angle θ at its tip. More specifically, the tapered surface 5a is inclined upward from an end portion facing the outer side to an end portion facing the inner side of the cap seal. The angle θ can be set to about 60 degrees, for example.

When the cap seal 10 is attached to the flange of the base part, the bent piece 5 is bent inside the cap seal 10 via the bent portion 5b (X direction), and the bent piece 5 is bent inside ( The cap seal 10 of the one-dot chain line bent piece 5) in FIG. 5 is attached by being pushed into the flange of the base part.

At this time, since the tip of the bent piece 5 has a tapered surface 5a inclined upward from the outer side to the inner side of the cap seal, the bent piece 5 in a state of being bent through the bent portion 5b. The tapered surface 5a at the tip of the head is inclined upward toward the inside of the cap seal 10. For this reason, the tip of the tapered surface 5a engages with the flange of the base portion, and the gripping force on the flange increases. Therefore, it is possible to make it difficult to remove the ring body 1 once attached to the base part from the base part.

Next, referring to FIGS. 6 to 8, when the cap seal 10 is attached to the base of the drum can, and when a third party tries to remove the cap seal 10 in an unauthorized manner, A mode in which a part is separated will be described.

Here, FIG. 6 is a longitudinal sectional view showing a state in which a cap seal is attached to the base portion of the drum can, and FIG. 7 is an enlarged view of a portion VII in FIG. FIG. 8 is a longitudinal sectional view showing a state in which the dot-like joint portion is broken and the lid body is lifted upward from the ring body via the arc-like joint portion.

As shown in FIGS. 6 and 7, an annular flange F is attached to the base K on the upper surface of the drum can D via an annular gasket G1.

A thread groove is provided inside the annular flange F. Similarly, a threaded groove is provided, and a metal plug P having an annular gasket G2 is screwed into the flange F to seal the base portion K.

In order to protect the metal plug P from rainwater or the like, the cap seal 10 is put on the plug P in a state where all the bent pieces 5 are bent inward via the bent portions 5b, and pushed outward. The tip of the bent piece 5 is engaged with the tip Fa of the bent flange F, and the attachment of the cap seal 10 to the base portion K is completed.

As shown in FIG. 8, when a third party tries to remove the cap seal 10 by inserting a tool between the flange F and the bent piece 5 or the like, the third party is firmly engaged with the flange F via the bent piece 5. The combined ring body 1 maintains the engaged state with the flange F, while the point-like joint portion 3 which is a weak structure portion is irreversibly broken, and the lid body 2 is interposed via the arc-like joint portion 4. It will be lifted upward (Y direction).

Since the broken point joint 3 is not restored, the administrator of the drum can D can know that there is a possibility that the drum can D has been fraudulent by confirming the break of the point joint 3. it can.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. They are also included in the present invention.

DESCRIPTION OF SYMBOLS 1 ... Ring body, 2 ... Cover body, 2a ... Vent hole, 3 ... Point connection part, 4 ... Arc-like connection part, 5 ... Bending piece, 5a ... Tapered surface, 5b ... Bending part, 6 ... Handle, 10 ... Cap seal, D ... Drum (top), K ... Base part, P ... Plug, F ... Flange, G1, G2 ... Gasket

Claims

A cap seal fitted to the base of the drum,
A resin ring body having a predetermined thickness and elasticity;
The upper surface of the ring body is connected via an arc-shaped connecting portion and a plurality of point-like connecting portions, provided with a handle, and an elastic resin lid,
A cap seal comprising a plurality of resin-made bent pieces disposed on the lower surface of the ring body at intervals in the circumferential direction of the ring and having elasticity.
The cap seal according to claim 1, wherein the ring body has a thickness of 1 mm to 6 mm.
The cap seal according to claim 1 or 2, wherein a vent is formed in the lid.
The cap seal according to any one of claims 1 to 3, wherein the handle is foldable at its base.
The cap seal according to any one of claims 1 to 4, wherein at least the lid is transparent.
The cap seal according to any one of claims 1 to 5, further comprising a tapered surface inclined upward from an end facing the outside to an end facing the inside of the cap seal at a tip of the bent piece.