JP2013133103A - Cap structure of container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap structure such that an opening part and a seal material of a container sealed with the seal material such as a rubber stopper, are covered with a cap, and a part of the cap is cut off to expose the seal material.SOLUTION: A cap structure has one or a plurality of protrusions which protrude downward on a bottom part of a disk part or a cutting protrusion part and at a position radially apart from an axis line of the cutting protrusion part, the protrusions are each fitted on a seal member while pressing the seal member in a repulsive manner, and a thin part is formed at the upper part of an annular guide wall surface which surrounds an outer edge part of the disk part when the disk part is displaced downward and cut off, and the guide wall surface is set to be longer than a length by which the disk part is pressed down when the disk part is cut off.

Description

  The present invention relates to a container cap structure in which an opening of a container is sealed with a sealing material such as a rubber stopper and covered with a cap.

Conventionally, as a cap of a vial or the like, for example, in the container lid structure of JP-A-6-31758, a series of thin annular portions that are cut by a force more than a predetermined force applied to the upper surface of the cap are formed. A projecting cylinder part projecting in a direction substantially perpendicular to the upper surface part from the position of the annular thin part and an upper surface part for pressing covering the tip of the projecting cylinder part are integrally formed on the upper surface part, and the pressing When the upper surface portion is pushed toward the sealing plug, the thin portion is cut and the member located inside the cut thin portion is separated from the cap, and separated from the cap when the force pushing the upper surface portion for pressing is removed. A structure is disclosed in which the member is repelled and moved in the direction opposite to the sealing plug by the projecting arm of the elastic sealing plug.
However, in the above configuration, since the fracture surface of the disk portion is separated in a form that is substantially parallel with the fracture surface of the cutting projection, the resistance is large and the separation cannot be performed.
On the other hand, in the container lid of Japanese Examined Patent Publication No. 4-76871, so that the thin-walled portion is broken when the protruding portion is broken, the fold opening is not returned and the burr is not generated so that the operator does not cut the fingertip. The structure to be formed is disclosed.
However, the above-described configuration is a method of pushing down the protruding portion from the side, and it is necessary to lengthen the protruding portion.
Therefore, the applicant of the present application is a cap of a vial or the like in Japanese Patent Application No. 2011-536694, and a bottom portion of a cutting disc portion that is pressed downward when being cut off, or a cutting disc portion that is formed with a thin outer periphery. And one or a plurality of protrusions mounted on the seal member in a state where the seal member is pushed in a repulsive manner while projecting downward to a position spaced radially from the axis of the cut protrusion. As a result, when the disc portion having the protrusion for cutting is cut off, the protrusion is pushed up by the rebound restoring force of the seal member and can be easily removed from the seal member. I play.
The applicant further developed a cap structure for a container that made it possible to detach the disc part having the cut-out projection part more reliably through intensive research, and completed the present invention. .
JP-A-6-31758 Japanese Examined Patent Publication No. 4-76871

  An object of the present invention is to provide a cap structure for a container such as a vial that can be easily removed from a sealing member by easily separating a part of a sealed cap with a finger.

According to the present invention, an elastic sealing member is provided in the opening, and the sealing member of a sealed container is covered with an upper wall surface of a cap such as a vial that is externally fitted in the opening so as to be in contact with the upper surface of the sealing member. A container comprising: a disk part for separation; a thin part for separation guide which is an outer peripheral edge of the disk part; and a projection part for cutting which is projected integrally with the disk part and pressed at the time of separation. In the cap structure,
One or a plurality of protrusions projecting downward at a position spaced radially from the axis of the cutting protrusion at the bottom of the disk part or the cutting protrusion;
The protrusion is mounted on the seal member in a state where the seal member is pushed in a repulsive manner,
The thin part is formed on the upper part of the annular guide wall surface surrounding the outer edge part of the disk part when the disk part is displaced downward and separated,
The guide wall surface is set to be longer than a length by which the disc portion is pushed down at the time of separation.
The cut projection may be integrally connected to a cap cover that is fitted on the cap.

In the present invention, by pressing the cut projection downward, the projection protruding from the bottom of the disc deflects the seal member downward and displaces the disc downward to crack the thin portion. Thus, the disc portion with the cutting projection can be separated from the upper wall surface of the cap.
The disc part with the cut-out projection part that is cut off is constrained by the annular inner peripheral wall, so that it does not enter the bottom side of the upper wall surface of the cut-off cap and guides to the inner peripheral wall. However, since it is pushed up almost directly by the rebound restoring force of the seal member through the protrusion, it can be easily removed from the seal member.
When the cut-out projection is connected to the cap cover, press the cut-out projection downward through the cap cover to crack the thin part and separate the disc part, and remove the cap cover from the cap. The disc portion with the cut-out projection can be removed from the cap.

(A) is sectional drawing of the container provided with the cap of Example 1, (b) is an enlarged view of the B section. It is a top view of the cap. It is a fragmentary sectional view of the container after cutting off the disc part of a cap. (A) is sectional drawing at the time of isolation | separation of a disc part, (b) is sectional drawing of the state in which the disc part jumped up by the protrusion. (A) is sectional drawing of the cap of Example 2, (b) is an enlarged view of the B section. (A) is sectional drawing of the cap of Example 3, (b) is an enlarged view of the B section. (A) is sectional drawing of the cap of Example 4, (b) is an enlarged view of the B section. (A) is sectional drawing of the cap of Example 5, (b) is an enlarged view of B part, (c) is an enlarged view of C part. It is a fragmentary sectional view of the container provided with the cap with a cap cover of Example 6. It is a fragmentary sectional view of the container after cutting off the disc part of the cap.

DESCRIPTION OF SYMBOLS 1 Cap 1A Cap upper wall surface 1A 'Cap upper wall part which becomes a fixed side when it is cut 1B
2 Disc part 3 Thin part 4 Cut projection part 5 Projection part 10 Vial bottle 11 Opening part 12 Seal member 13 Groove bottom part 13b Step part 20 Guide wall part 21 Groove 21a Groove side wall 25 Cap cover 25a Neck part 25b Locking head

According to the present invention, the cut-out protrusion of the cap is disposed on the disc part for separation, and the protrusion is provided on the bottom part of the disc part or the cut-out protrusion part. Separation from the upper wall is easy, and the protrusion is restrained by the guide wall surface and floats almost directly by the elastic return force of the seal member, so that the disc with the protruding protrusion for cutting is securely sealed. Can be removed from the member.
Hereinafter, an embodiment in which the container cap structure of the present invention is applied to a vial cap structure will be described with reference to the drawings.

  The cap 1 of the first embodiment shown in FIGS. 1 to 4 is made of metal, and a seal member 12 having elasticity such as rubber or elastomer is fitted into the cylindrical opening 11 of the vial 10 without any gap. The sealed vial 10 has a structure in which the sealing member 12 is covered and fitted to the opening 11 and fixed.

The cap 1 has a circular cap upper wall surface 1A, and a cylindrical cap peripheral wall that hangs along the outer periphery of the cap upper wall surface 1A and is fitted and fixed to the outer peripheral wall of the opening 11 of the vial 10 on the inner surface. It consists of part 1B.
The upper surface 1A of the cap 1 includes a separation disk portion 2 formed in contact with the upper surface of the seal member 12, a separation guide thin portion 3 serving as an outer peripheral edge of the disk portion 2, and the thin portion. 3, a guide wall surface 20 that is connected to the outer peripheral edge of the disc portion 2 via 3, and a cutout projection portion 4 that protrudes integrally on the disc portion 2 are formed.

In the case of the illustrated example, the disc portion 2 is set in a circular shape having a small diameter concentric with the cap upper wall surface 1A, as clearly shown in FIG.
A thin portion 3 is formed along the outer periphery of the disc portion 2, and in this embodiment, the disc portion 2 is a cap that becomes a fixed side when the upper surface of the thin portion 3 and the disc portion 2 are separated. It is set to be substantially flush with the upper wall surface 1A.

In the present embodiment, the thin wall portion 3 is formed in an annular groove in which the bottom surface of the cap upper wall surface 1A is opened, and the upper groove bottom surface 13 is set to be thin (see FIG. 1B).
In the illustrated example, the groove bottom surface 13 is formed in an inclined surface so as to become gradually thinner toward the outside, and a stepped portion 13 b that is recessed inward is provided on the upper end surface of the guide wall portion 20 that contacts the thin portion 3. Thus, cracks are easily generated along the corners on the outer peripheral side of the groove bottom surface 13.
In this invention, the shape of the thin part 3 is not limited to the said Example, Other well-known shapes can be used.

The thin portion 3 is formed on the upper portion of the annular guide wall surface 20 that surrounds the outer edge portion of the disc portion 2 when the disc portion 2 is displaced downward and separated.
That is, the guide wall portion 20 is composed of an annular wall surface extending vertically, and in this embodiment, the groove side wall 21a on the inner peripheral side of the groove 21 formed concentrically on the cap upper wall surface 1A and having an open upper surface. Is the guide wall portion 20.

This guide wall part 20 is set longer than the length by which the disk part 2 is pushed down at the time of isolation | separation.
Thereby, there is no possibility that the outer edge portion of the disc portion 2 that is separated and has a burr is caught on or inserted into the back side of the cap upper wall portion 1A ′ that is left uncut and fixed. The outer edge portion of the disc portion 2 is restrained by the wall surface of the guide wall portion 20.
Here, although the guide wall surface 20 is formed as a tapered surface that gradually expands outward in the illustrated example, it may be a curved surface or a vertical surface.

When the cut-out projection 4 is pushed down and the thin portion 3 is broken, the disc portion 2 is pushed down almost straight along the guide wall portion 20, and the projection 5 causes the sealing member 12 to have its elastic force. Again, it continues to push downward (see FIG. 4 (a)).
When no force is applied to the cut projection 4, the projection 5 is pushed up by the elastic restoring force of the seal member 12. At this time, the disc 2 is almost straight along the guide wall 20. It is pushed up (see FIG. 4B).
Thereby, since it is separated from the fixed cap upper wall portion 1A ′ reliably and jumps up without being caught in other places, it can be easily removed (see FIG. 3).

  As shown in an example in FIG. 1, the cut projection 4 is formed in a substantially cylindrical shape having an upper surface and an open bottom, and is formed integrally with the disk portion 2. A center line (axis line) is arranged at a concentric position C1 with the center of the disc portion 2 (same as the center of the upper wall surface of the cap).

Further, at the bottom of the disk part 2, a protrusion 5 that protrudes downward is arranged at a position spaced apart in the radial direction with respect to the center C1 of the disk part 2 and the cutting projection part 4.
In the present embodiment, the protrusion 5 has a downward hollow hemispherical shape, as shown in FIG. 1B, and is formed on the disk portion 2 connected to the cut-out protrusion 4. It has a shape.

One or a plurality of the protrusions 5 may be provided.
The protrusions 5 are preferably arranged at equal intervals around the axis C1. In this embodiment, three protrusions 5 are arranged at intervals of 120 degrees around the axis C1.
As a result, even if an offset load is applied to the cutting projection 4 from any direction, any one of the projections 5 can be surely pushed down, and the thin portion 3 can be triggered.
Although not shown, it is easy to push down if all or part of the upper surface of the cut projection is set to an inclined surface that gradually descends.
In this case, it is preferable to provide the protrusion 5 on the extended line where the inclined surface descends.

The shape of the protrusion 5 is not particularly limited, but it is preferable that the bottom surface has an arcuate cross section or a curved surface with chamfered corners so as not to bite into the seal member 12 when separated.
Further, the protrusions 5 may be arranged so that approximately half of the protrusions 5 are bridged between the cut protrusions and the disk part 2.
Although not shown, the cutting protrusion 4 is shown concentrically with the disk portion 2, but the axis of the cutting protrusion 4 may be decentered from the center of the disk portion 2.
When a plurality of protrusions 5 are provided, a height difference may be provided in the height of the protrusions.
In addition, various configurations can be applied as described in Japanese Patent Application No. 2011-536694 for the configuration of the cutout projection and the projection.

The sealing member 12 may be a horizontal plane, but in this embodiment, a portion that can abut the protrusion 5 is raised above the other portion, and the protrusion 5 is pressed against the raised portion 12a in advance. The cap 1 is put on the container 10 in a depressed state.
Thereby, when the disc part 2 is cut off from the upper part of the guide wall part 20 via the thin part 3, the protrusion part 5 is mounted on the raised part 12a which returned to the original shape by the elastic repulsive force of the raised part 12a. Therefore, the disc part 2 with the cut-out projection part 4 that has been cut off is displaced to a position higher than the guide wall part 20 that remains fixed, so that it can be easily grasped and removed.

The cap 1 of Example 2 shown in FIG. 5 has a different shape in which the disk portion 2 that is the outside of the cutout projection 4 is raised in a mountainous manner.
That is, the disc portion 2 that is outside the cut projection 4 has a raised shape that gradually descends while curving from the proximal end side of the cut projection 4 toward the outer end of the disc portion 2. The tip of the raised shape descends to the thin portion 3.
Further, the protrusion 5 is formed with a groove 5a at the base end located on the upper side of the cut projection 4 or set to a thin wall instead of the groove, so that the protrusion 5 is pressed when the cut projection 4 is pressed. May be bent and easily pressed against the seal member 12.

When the disc portion 2 is cut, the cap upper wall portion 1A ′ that becomes the fixed side is set to a substantially horizontal plane.
A concave groove 21 is formed in the cap upper wall portion 1A ′ as in the first embodiment, and a groove side wall 21a on the inner peripheral side of the concave groove 21 serves as a guide wall portion 20.
In this case, the bottom surface of the protrusion 5 is in the middle of the guide wall 20, but the outer end of the disk part 2 is curved upward, so that the disk part even if it is broken by the thin part 3. The outer end portion 2 has a shape that is more difficult to enter the back side of the upper wall portion 1A ′ on the fixed side.
Since other configurations are the same as those in the above embodiment, the description thereof is omitted.

In the cap 1 according to the third embodiment illustrated in FIG. 6, the guide wall portion 20 includes one annular wall.
In this embodiment, the outer disk portion 2 of the cut projection 4 extends substantially horizontally, and the thin portion 3 is formed on the upper portion of the guide wall portion 20 formed of one annular wall. The lower end of the portion 20 is bent, and is formed on the fixed-side cap upper wall portion 1A ′ extending substantially horizontally through the disc portion 2 and a step.

In the illustrated example, the bottom surface of the protrusion 5 is substantially flush with the bottom surface of the guide wall portion 20 or the cap upper wall portion 1A ′ on the fixed side.
Since the other configuration is the same as that of the first embodiment, the same reference numeral is given to the same configuration, and the description thereof is omitted.

The cap 1 of Example 4 shown in FIG. 7 shows a case where a synthetic resin is used.
The basic structure is the same as that of the third embodiment, and the guide wall portion 20 is composed of one annular wall.
In other words, the guide wall portion 20 protrudes upward from the cap upper wall portion 1A ′ on the fixed side, and is formed so as to be flush with the upper surface of the disc portion 2.
In addition, the lower end of the guide wall 20 is the same height as the lower end of the protrusion 5.
The thin portion 3 may be provided with irregularities in the groove bottom so that the depth of the groove is partially increased.

Due to the difference in material, the thickness of each part is increased, the protrusions 5 are formed solidly, and the unevenness is reduced to increase the strength.
Further, in the present embodiment, the locking means 14 of the cap peripheral wall portion 1B includes a slit 14a that extends in the vertical direction on the cap peripheral wall portion 1B to allow the outer diameter to be expanded and contracted, and an inward claw portion 14b formed at the lower end. It is made up of.
Since other configurations are the same as those in the above-described embodiment, description thereof is omitted.

The cap 1 of Example 5 shown in FIG. 8 shows a different example using a synthetic resin.
In the present embodiment, the upper surface of the disc portion 2 and the upper surface of the thin wall portion 3 and the fixed cap upper wall portion 1A ′ are set on the same plane.
The guide wall portion 20 is formed of one annular wall as in the fourth embodiment, but protrudes toward the bottom surface with respect to the cap upper wall portion 1A ′ on the fixed side.
In addition, the lower end of the guide wall 20 is the same height as the lower end of the protrusion 5.
Since other configurations are the same as those in the above embodiment, the description thereof is omitted.

The cap 1 of Example 6 shown in FIG.9 and FIG.10 shows the different Example provided with the cylindrical cap cover 25 with which the bottom face fitted on this cap 1 was opened.
The cap 1 includes a metal cap upper wall surface 1A and a cap peripheral wall portion 1B, and the cap upper wall surface 1A includes a disc portion 2, an annular thin portion 3, and a guide wall surface provided with the thin portion 3 on the upper portion. 20 and a cutting projection 4 projecting on the disc portion 2.
Since each said structure is the same as that of the said Example 1, the same code | symbol is attached | subjected to the same structure and the description is abbreviate | omitted.

The cap cover 25 is connected to the cut projection 4 of the cap 1 by locking or fixing.
In the illustrated example, the cutting projection 4 has a hollow structure in which the bottom surface is fully open and has a small-diameter opening 4a at the center of the top surface, and the cutting projection 4 is formed by the opening 4a and the hollow 4b. It is formed in a dovetail shape.

Then, in the center of the inner surface of the upper wall of the cap cover 25, a neck portion 25a that protrudes downward and is inserted into the opening 4a of the cutting projection portion 4, and is formed to have a larger diameter than the opening 4a and the cutting projection portion. 4 is formed integrally with the cap cover 25, and the cap cover 25 and the cut projection 4 are integrally connected to each other.
For example, a slit (not shown) for expanding the diameter of the opening 4a is formed in the opening 4a, the neck 25a is inserted into the opening 4a, and the locking head 25b is stored in the hollow 4b, and then the slit is formed. Are connected by welding.
The connection between the cap cover 25 and the cutout projection 4 is not limited to the above embodiment, and may be connected by other known methods. The neck 25a and the locking head 25b connected to the cutout projection 4 may be connected. The cap cover 25 may be molded simultaneously with the cap cover 25, or the cap cover 25 and the cut projection 4 may be integrally molded.

Since it consists of the said structure, if the center of the upper wall of the cap cover 25 is pushed down, the projection part 4 for a cut will be pushed down below and the thin part 3 will be fractured | ruptured.
Thereby, the disc part 2 which has the protrusion part 4 for cutting is cut off from cap upper wall part 1A 'used as a fixed side.
The separated disc portion 2 is the same as the first embodiment in that it rises along the guide wall surface 20.

Since the cut projection 4 is connected to the cap cover 25 via the neck 25a and the locking head 25b, the cut projection 4 can be removed by pulling the cap cover 25 upward from the cap 1 and removing it. The disc portion 2 having the disc portion 2 can be separated from the cap 1, and a circular hole along the contour of the disc portion 2 can be formed in the center of the cap 1.
In this embodiment, since the disc portion 2 does not have to be displaced upward as long as it is separated from the guide wall portion 20, the upper surface of the seal member 12 may bulge a portion that abuts the protrusion 5. As shown in the figure, it may be set horizontally without being raised.

Each element of the above-described embodiments can be implemented by appropriately replacing the respective embodiments.
In addition, it goes without saying that various design changes can be made without departing from the scope of the present invention.

  The present invention is not limited to the cap of a vial, but can be applied as a cap structure for containers of various uses sealed with a sealing member.

Claims (8)

A detachable disc portion formed on an upper wall surface of a cap that is fitted on the opening and covers the sealing member of an airtight container provided with a sealing member having elasticity at the opening, and is in contact with the upper surface of the sealing member. In the cap structure of the container comprising the thin part for the separation guide that becomes the outer peripheral edge of the disk part, and the projection part for cutting that is projected integrally with the disk part and pressed when being separated,
One or a plurality of protrusions projecting downward at a position spaced radially from the axis of the cutting protrusion at the bottom of the disk part or the cutting protrusion;
The protrusion is mounted on the seal member in a state where the seal member is pushed in a repulsive manner,
The thin part is formed on the upper part of the annular guide wall surface surrounding the outer edge part of the disk part when the disk part is displaced downward and separated,
A cap structure for a container, wherein the guide wall surface is set to be longer than a length by which the disk portion is pushed down upon separation.   2. The container cap structure according to claim 1, wherein a cross-section of the guide wall surface is set to be a substantially vertical surface or an inclined surface that gradually inclines outward in a downward direction.   The guide wall surface is composed of a guide wall surface on the inner peripheral side wall of the annular groove recessed in the upper wall surface of the cap or a guide wall surface of one annular wall projecting from the upper wall surface. The cap structure of the container according to 1 or 2.   The disk part which becomes the outer side of the protrusion part for cutting is set to the same surface as the upper surface of a thin part, or the upper part of a thin part, and is further set thinly, The thin film part in any one of Claims 1-3 Cap structure described.   The disk part which becomes the outer side of the cutting projection part has a raised part that gradually descends while curving from the proximal end side of the cutting projection part toward the outer end of the disk part, and the raised part descends. The cap structure according to any one of claims 1 to 4, wherein the tip extends to a thin portion.   The cap structure according to claim 5, wherein the protrusion is formed with a groove at a base end located on the upper side on the cut protrusion side, or is set to be thin instead of the groove.   7. The container cap structure according to claim 1, wherein a material of the cap is made of metal or plastic.   The cut-out projection is formed integrally with the cap cover that fits outside the cap.The cut-out projection is pushed down through the cap cover to break the thin-walled portion and separate the disc portion, and remove the cap cover from the cap. The container cap structure according to any one of claims 1 to 7, wherein the separated disc portion can be removed from the cap by removing the cap.

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