JP5038787B2 - cap - Google Patents

Description

  The present invention relates to a cap that is fitted and fixed to a container mouth portion and has an inner stopper having a planned opening portion at the top plate portion, and an upper lid that covers the inner stopper, and more specifically, by an opening operation of the upper lid. The present invention relates to a cap that can automatically remove the planned opening portion of the inner plug, and that the removed planned opening portion is integrated with the upper lid and is not detached from the upper lid.

Conventionally, a cap consisting of an inner stopper that is fitted and fixed to the container mouth and has a planned opening at the top plate and an upper lid that covers the inner stopper is superior in liquid-tightness and pouring properties. It is used for the purpose of storing the contents.
In this type of cap, when opening the cap for the first time, the top lid is first removed from the container mouth, and then the pull tab formed on the planned opening portion defined by the weakening portion that can be broken is pulled up to be broken. By breaking the weakened portion and removing the planned opening portion, a dispensing opening is formed, and the contents can be taken out. Therefore, two steps are required until the contents are taken out, and the removed opening needs to be discarded. Therefore, a cap that can be formed in one step and does not need to discard unnecessary parts is required. It has been.

Various proposals have been made in order to solve such a problem in a highly liquid-tight cap. For example, in Patent Document 1 below, a spout main body including a cylindrical portion provided with a flange for attaching to a hole provided in a carton around a lower portion and having a male screw formed on the outer periphery, and a male screw of the cylindrical portion. A sealing member is integrally formed on the spout main body via a thin portion below the inner wall of the cylindrical portion, The top surface is provided with an arched ledge with a hole in the top surface, and the cap is provided with a hook-shaped hook on the back side of the top surface to be fitted and locked into the arch-shaped ledge hole. The carton outlet is described.
Further, in a hinge cap comprising an upper lid that is hinged to the cap body, the top plate portion of the cap body has a pouring cylinder that serves as a guide for pouring the liquid in the container, and a pouring formed inside the pouring cylinder. A planned opening portion and a seal plate formed integrally with the top plate portion via an endless thin portion formed on the periphery of the planned opening portion so as to close the planned opening portion Provided on the inner surface of the top plate portion of the upper lid, and is formed on the inner surface of the sealing projection and is extended downward. A tearing tool for tearing the thin-walled portion is provided, and the tearing tool includes at least a portion of the upper lid and the cap body opposite to the hinge connecting portion and a portion in the vicinity of the hinge connecting portion. Characterized by being welded to the part Has also been proposed that the hinge cap (Patent Document 2).

Japanese Patent No. 3140207 JP 2005-289389 A

In the spout described in Patent Document 1, when the cap is removed, the sealing member of the spout main body is removed together with the cap, so that an opening can be formed in one step. Since the weakened portion is broken by pulling the stop member from one central portion, it is difficult to break the weakened portion easily and reliably, and it is not yet satisfactory.
The hinge cap described in Patent Document 2 can also automatically form a dispensing opening by opening the top lid, but the dispensing opening planned portion formed in the top plate portion of the cap body has a thin portion. Is closed by a seal plate formed integrally with the top plate portion, and the seal plate is welded to the tearing tool of the closed upper lid, so that positioning of the welded portion is necessary, and molding is easy However, it is not satisfactory in terms of productivity and cost.
Accordingly, an object of the present invention is to have excellent liquid-tightness before opening, and when opening, the opening for pouring can be easily and reliably formed as the upper lid is swung, and the removed opening is removed. To provide a cap that does not need to be discarded.

According to the present invention, the top cover is composed of a top plate portion and a skirt portion depending from the outer periphery of the top plate portion, the inner surface of the skirt portion is formed with a screw, and the inner surface is formed on the inner surface of the top plate portion. A pouring nozzle is formed in the center of the top surface, and is defined by a weakening line that can be broken inside the pouring nozzle. In the cap comprising an inner plug fitted and fixed to the container mouth portion formed with the planned opening portion, an annular wall is formed on each of the inner surface of the top lid top plate portion and the planned opening portion of the inner plug , The lower part of the annular wall of the upper cover is composed of a step part and a thin part extending downward from the step part, and each annular wall is provided with an engaging protrusion with which the upper cover and the inner plug can be engaged in the vertical direction and an upper cover in the opening direction. The top lid and inner plug engage in the circumferential direction when swiveling Capacity of a plurality of which ratchet is formed, that the ratchet of the upper lid, a flexible flap pieces extending outwardly toward the cap opening direction together with being connected to the step portion and the thin portion A featured cap is provided.

In the cap of the present invention,
1 . On the inner surface of the top lid top plate portion, an annular protrusion having a length that comes in contact with the top surface of the inner plug in a closed state is formed on the outer peripheral side from the nozzle for pouring the inner plug.
2 . A screw formed on the inner surface of the skirt part engages with a screw of the container mouth part, and a tamper evidence band that engages with the container mouth part via a breakable weakening part is provided at the lower end of the skirt part of the upper lid. Molded in one piece,
Is preferred.

According to the present invention, when the upper lid is first opened, the dispensing opening can be automatically formed in the inner plug, and it is not necessary to form the dispensing opening after removing the upper lid. Opening operation in steps is possible.
In addition, the circumferential engagement by the ratchet and the vertical engagement by the engagement protrusions allow the shearing force in the circumferential direction and the pulling force in the upward direction to act on the weakening line, and the weakening that partitions the planned opening portion. The breakage of the wire can be easily and reliably performed.
Furthermore, an annular wall that engages the upper lid is formed at a position close to the weakening line that defines the opening of the inner plug, so that the upward force from the engaging projection or the circumferential force from the ratchet is used as the weakening line. It can be made to work efficiently, and the weakening line can be easily and reliably broken.
Furthermore, there is an advantage that the planned opening portion removed from the inner plug due to the breakage of the weakening line does not separate with the upper lid, and it is not necessary to discard the removed planned opening portion again.

  The cap of the present invention comprises a top plate portion and a skirt portion depending from the outer peripheral edge of the top plate portion, and a screw that engages with a screw of the container mouth is formed on the inner surface of the skirt portion, and on the inner surface of the top plate portion. Is composed of an upper lid formed with an inner ring, a top surface and a peripheral wall depending from the outer peripheral edge of the top surface, and a pouring nozzle is formed at the center of the top surface, and is located inside the pouring nozzle. A combination of inner plugs that are fitted and fixed to a container mouth portion formed with a predetermined opening portion that is partitioned by a weakening line that can be broken, and is provided on the inner surface of the top lid top plate portion and the predetermined opening portion of the inner plug. Each has an annular wall, and each annular wall has an engaging projection with which the upper lid and the inner plug can be engaged in the vertical direction, and the upper lid and the inner plug are surrounded when the upper lid is turned in the opening direction. A plurality of ratchets that can be engaged in the direction are formed. Rukoto is an important feature.

That is, in the present invention, when the upper lid is turned in the opening direction, the ratchets formed on the inner surface of the top plate of the upper lid and the annular walls of the planned opening portion of the inner plug are engaged, and as the upper lid is raised. Since the engaging projections are engaged in the up-and-down direction, the annular wall of the opening portion of the inner plug is pulled up. As a result, the shearing force in the circumferential direction and the pulling force in the vertical direction act on the breakable weakening line that demarcates the planned opening, making it possible to easily break the weakening line, It becomes possible to form reliably.
Moreover, since the broken opening planned portion is not detached with the upper lid after being removed from the inner plug, it is not necessary to discard the removed planned opening portion.

Hereinafter, the present invention will be described with reference to the accompanying drawings.
1A and 1B are diagrams showing an example of an upper lid used for a cap of the present invention, in which FIG. 1A is a side sectional view and FIG. 1B is a bottom view.
2A and 2B are diagrams showing an example of the inner plug used in the cap of the present invention, in which FIG. 2A is a top view and FIG. 2B is a side sectional view.
3 is a partial cross-sectional view of the cap of the present invention formed by combining the upper lid shown in FIG. 1 and the inner cap shown in FIG. 2 at the container mouth, (A) is in a closed state, (B ) Shows the state when the upper lid is raised and the tamper evidence band is released, and (C) shows the state where the upper lid is further raised and the weakening line defining the planned opening portion is broken.

The upper lid 1 includes a top plate portion 2 and a skirt portion 3 depending from the outer peripheral edge of the top plate portion 2, and a screw 4 that engages with a screw 41 of a container mouth portion 40 described later is formed on the inner surface of the skirt portion 3. ing. The inner surface of the top plate portion 2, is formed an inner ring 5 maintains the pouring nozzle 25 and in close contact with liquid tightness after opening forming pouring described later inner plug 20, also with the inner ring 5 concentric An annular protrusion 6 is formed outside the inner ring 5 , and an annular wall 7 is formed inside the inner ring 5 .
The annular protrusion 6 has a length such that the tip of the annular protrusion 6 abuts against the top surface 21 of the inner plug 20 in the closed state, thereby preventing over-tightening of the upper lid 1. Further, the annular wall 7 has such a length that the lower end of the annular wall 7 does not come into contact with the upper surface of the planned opening portion 27 so as not to break the weakening line 26 that defines the planned opening portion 27 of the inner plug 20 described later in the closed state. have.

On the outer surface of the annular wall 7 is formed an engaging protrusion 8 that engages with an engaging protrusion 29 of the inner plug 20 described later. On the other hand, on the lower portion of the outer surface of the annular wall 7, the inner plug 20 described later. A ratchet 9 that engages with the ratchet 30 is formed. The ratchet 9 is composed of a flexible flap piece whose upper part is continuous with the lower end of the annular wall 7 and whose tip is in the opening direction. As a result, the ratchet 30 formed on the inner plug 20 can be easily climbed when capping, the resistance when the ratchet is climbed is reduced, and the ratchet 30 of the inner plug 20 is securely engaged when opening. Thus, since the annular wall 28 of the inner plug 20 follows the turning of the upper lid 1, it is possible to break the weakening line 26 that partitions the planned opening portion 27.
Further, a tamper evidence band (hereinafter referred to as “TE band”) 11 is integrally formed at the lower end of the skirt portion 3 via a breakable weakening portion 10, and a container mouth portion 40 is formed on the inner surface of the TE band 11. A ratchet 12 that engages with the ratchet 43 formed at the top is formed, and the TE band 11 is not separated from the container opening 40 after the weakened portion 10 is broken.

The inner plug 20 includes a top surface 21 and a peripheral wall 22 depending from the outer peripheral edge of the top surface 21, and an inner ring 23 that is in close contact with the inner surface of the container mouth is formed on the inner surface of the top surface 21. The inner stopper 20 is firmly fitted into the container mouth 40 by the engaging protrusion 24 formed on the inner surface of the peripheral wall 22.
A pouring nozzle 25 is formed in the central portion of the top surface 21, and a planned opening portion 27 partitioned by a weakening line 26 that can be broken inside the pouring nozzle 25 is formed. An annular wall 28 is formed on the outer peripheral edge of the planned opening portion 27. An engagement protrusion 29 that engages with the engagement protrusion 8 formed on the outer surface of the annular wall 7 of the upper lid 1 is formed on the upper portion of the inner surface of the annular wall 28. A ratchet 30 that engages with a ratchet 9 formed on the annular wall 7 of the upper lid 1 is formed in the lower part.

As apparent from FIG. 3, the container mouth portion 40 to which the example of the cap of the present invention comprising the combination of the upper lid 1 and the inner plug 20 described above is applied has a screw 41 that engages with the screw 4 of the upper lid on the outer peripheral surface. A bead 42 is formed on the upper portion of the screw 41 to engage with the engaging protrusion 24 formed on the inner surface of the inner wall 22 of the inner plug. Further, below the screw 41, the inner surface of the TE band 11 of the upper lid 1 is formed. A ratchet 43 that engages with the ratchet 12 and a bead 44 that engages with the protrusion 13 are formed.
In the unopened state shown in FIG. 3 (A), the inner plug 20 has the inner ring 23 in intimate contact with the inner peripheral surface of the container mouth portion 40, and the engagement protrusion 24 of the circumferential wall 22 has an outer periphery of the container mouth portion. By engaging with the bead 42 formed on the surface, the container is firmly fitted to the container mouth portion, and the liquid-tightness is maintained until the dispensing opening is formed.
In addition, the upper lid 1 has an annular protrusion 6 in contact with a position outside the pouring nozzle 25 on the top surface 21 of the inner plug 20, and the liner ring 5 is in close contact with the inner surface of the pouring nozzle 25 of the inner plug 20, Maintains liquid-tightness after forming the dispensing opening.

  As apparent from FIG. 3 (B), when the upper lid 1 is pivoted and raised in the opening direction, the TE band 11 of the upper lid 1 is engaged with the ratchet 43 of the container mouth and is not rotated together with the upper lid 1, The weakened portion 10 is broken, detached from the skirt portion 3 of the upper lid 1, and falls to the position of the neck ring 45 of the container mouth portion 40. This makes it clear at a glance that the upper lid 1 has already been subjected to the opening operation. At this stage, the upper and lower engaging projections 8 and 29 formed on the annular walls 7 and 28 of the upper lid 1 and the inner plug 20 are not engaged, and weakening that partitions the planned opening portion 27 of the inner plug 20. Line 26 has not yet been broken.

  Subsequently, when the upper lid 1 is turned in the direction of opening, the weakening line 26 defining the planned opening portion 27 is completely broken and detached from the inner plug 20 as shown in FIG. Since the projection 29 for engagement of the annular wall 28 is engaged with the projection 8 for engagement of the annular wall 7 of the upper lid, the planned opening portion 27 is removed from the inner plug 20 together with the upper lid 1, and as a result, the upper lid 1. When the is removed, the dispensing opening 31 is formed, and it is possible to reliably perform the dispensing opening only by opening the upper lid.

The cap of the present invention is not limited to the embodiment of the specific example shown in the above-described drawings, and various modifications can be made.
For example, in the above specific example, the ratchet formed on the upper lid is made of a flap piece whose upper part is continuous with the annular wall and whose tip in the circumferential direction faces the opening direction, thereby reducing the resistance at the time of capping. However, as having the same effect, a stepped portion and a thin portion extending downward from the stepped portion are formed in the lower portion of the annular wall of the upper lid , and the stepped portion and the outer peripheral surface of the thinned portion are continuous, Mention may also be made of flap pieces whose direction tips extend outwardly in the direction of opening. Of course, a conventionally known ratchet mechanism can also be employed.
In a specific example, a TE band was formed on the upper lid, and after the TE band was clearly detached from the upper lid, an opening for pouring was formed to provide a cap with excellent tamper evidence. Even a cap without a TE band does not depart from the spirit of the present invention, and the cap may be covered with a shrink film or the like.

In addition, the annular wall formed on the upper lid and the inner plug has a ratchet and an engaging projection formed on the outer surface of the annular wall of the upper lid and the inner surface of the annular wall of the inner plug. A ratchet and an engaging projection may be formed on the inner surface and the outer surface of the annular wall of the inner plug, respectively.
Further, the shape of the breakable weakening line formed on the inner plug is not limited to a circular shape as in the specific example, and a conventionally known shape can be adopted.

The cap of the present invention is produced by molding the upper lid and the inner plug by a conventionally known molding method such as injection molding using a resin such as polyethylene or polypropylene, which has been used for a conventional plastic cap, and combining them. can do.
When the cap of the present invention is adapted to the container mouth part, after combining the inner stopper and the upper lid in advance, they can be integrally capped to the container mouth part. The attachment is preferable because the force at the time of capping can be reduced.

It is a figure which shows an example of the upper cover used for the cap of this invention, (A) is a sectional side view, (B) is a bottom view. It is a figure which shows an example of the inner stopper used for the cap of this invention, (A) is a top view, (B) is a sectional side view. It is a partial sectional side view at the time of applying the cap of this invention formed by combining the upper cover shown in FIG. 1 and the inner stopper shown in FIG. 2 to a container mouth part, (A) is an unopened state, (B) is an upper cover. Is a state at the time when the tamper evidence band is released, and (C) shows a state where the upper lid is further raised and the weakening line defining the opening planned portion is broken.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Top cover, 2 Top plate part, 3 Skirt part, 4 Screw, 5 Inner ring, 6 Annular protrusion, 7 Annular wall, 8 Engaging protrusion, 9 Ratchet, 10 Weakening part, 11 TE band, 20 Middle plug, 21 Top surface, 22 circumferential wall, 23 inner ring, 24 engaging protrusion, 25 pouring nozzle, 26 weakening line, 27 planned opening, 28 annular wall, 29 engaging protrusion, 30 ratchet, 31 pouring opening, 40 container opening Department.

Claims (3)

A top plate portion and a skirt portion depending from the outer periphery of the top plate portion, and a screw is formed on the inner surface of the skirt portion, and an inner lid is formed on the inner surface of the top plate portion; a top surface; A pouring nozzle is formed at a central portion of the top surface, and a planned opening portion defined by a weakening line that can be broken inside the pouring nozzle is formed. In a cap consisting of an inner stopper fitted and fixed to the container mouth portion,
An annular wall is formed in each of the inner surface of the top lid top plate and the opening portion of the inner plug, and the lower part of the annular wall of the top lid is composed of a stepped portion and a thin portion extending downward from the stepped portion. Is formed with a plurality of ratchets with which the upper lid and the inner plug can be engaged in the circumferential direction when the upper lid and the inner plug are engaged in the vertical direction and the upper lid and the inner plug are engaged in the circumferential direction when the upper lid is turned in the opening direction . A cap characterized in that the ratchet of the upper lid is a flexible flap piece that is connected to the stepped portion and the thin portion and extends outward in the opening direction . The upper lid top panel inner surface, an outer peripheral side of the nozzle exit of the inner plug Note, No claim 1 Symbol placement annular protrusion abutting length are formed on the top surface of the inner plug in the plugging state cap. A screw formed on the inner surface of the skirt part engages with a screw of the container mouth part, and a tamper-evident band engages with the container mouth part via a breakable weakening part at the lower end of the skirt part of the upper lid. The cap according to claim 1 or 2, wherein is integrally formed.

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