WO2012111162A1

WO2012111162A1 - Structure for cap for container

Info

Publication number: WO2012111162A1
Application number: PCT/JP2011/053571
Authority: WO
Inventors: 利明岩瀬
Original assignee: 船橋電子株式会社
Priority date: 2011-02-18
Filing date: 2011-02-18
Publication date: 2012-08-23
Also published as: JP4902820B1; JPWO2012111162A1

Abstract

A structure for a cap (1) for a vial, etc., the cap (1) being adapted to be fitted over the opening (11) of the container and covering an elastic seal member (12) provided at the opening (11) to hermetically seal the container, wherein the structure comprises: a circular plate section (2) for separation, formed on the upper wall surface (1A) of the cap so as to be in contact with the upper surface of the seal member (12); a thin-walled section (3) for guiding separation, adapted to be the outer peripheral edge of the circular plate section; and a protrusion (4) protruding from the circular plate section so as to be integral therewith, the protrusion (4) being depressed at the time of separation. The cap (1) is characterized in that one or more downwardly protruding protrusions (5) are formed on the bottom portion of the circular plate section (2) or of the protrusion (4) at positions separated from the axis of the protrusion (4) in the radial direction and that the protrusions (5) are mounted on the seal member (12) so as to depress the seal member (12) so that the seal member (12) can push back the protrusions (5).

Description

Container cap structure

The present invention relates to a container cap structure in which a container containing a liquid such as an injectable drug solution is sealed with a sealing material such as a rubber stopper, and the opening and the sealing material are covered with a cap.

Conventionally, as a cap of a vial bottle or the like, for example, in the container lid structure of Japanese Patent Laid-Open No. 6-31758, a series of thin annular portions that are cut by a force more than a predetermined force applied to the upper surface portion 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 part is separated in a form that is substantially parallel to the protrusion fracture surface, 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 folded when the protruding portion is broken, the fold opening is not turned back 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.
JP-A-6-31758 Japanese Patent Publication No. 4-76871

The problem to be solved by the present invention is to provide a cap structure of a container such as a vial which can be easily separated with a finger and removed from the sealing member.

The present invention provides a cap such as a vial or the like that covers the sealing member of a sealed container by providing an elastic sealing member at the opening and is fitted over the opening, and is provided on the upper wall surface of the sealing member on the upper wall surface of the cap. A separating disc portion formed in contact with the disc, a thin guide portion serving as an outer peripheral edge of the disc portion, and a projecting portion that protrudes integrally with the disc portion and is pressed at the time of separation. In the container cap structure,
One or a plurality of protrusions projecting downward are provided at positions spaced radially from the axis of the protrusion at the bottom of the disk or protrusion.
The protrusion is mounted on the seal member in a state where the seal member is pushed in such a manner as to be repelled.
The axis of the protrusion can be arranged at a position that is concentric with or eccentric from the center of the disk portion.
The protrusion is preferably arranged on the inner side along the outer peripheral edge of the disk portion.

In the present invention, the disc portion can be separated by pushing the projection with a finger, and the disc portion with the separated projection is pushed up by the rebound restoring force of the seal member. Therefore, it can be easily removed from the seal member.
In addition, when the protrusion is arranged at a position that is eccentric from the center of the disc part, the disc part formed integrally with the protrusion is pushed off by the offset load by applying an offset load to the protrusion with a finger. Further, since the protrusions located in different directions are further detached while maintaining the form in which the inclination of the disk part is increased, the resistance to sizing is small and the disk part can be easily removed.
Since the separated disc portion is held in an inclined posture by the protrusion on the seal member, it can be easily removed from the seal member.
Further, by making the bottom surface of the protrusion a circular arc in section or a curved surface at the corner, the fracture portion does not bite into the seal member when separating.
Furthermore, an uneven load can be easily applied by forming an inclined surface on the upper surface of the protrusion.
Moreover, the generation | occurrence | production of the burr | flash of a torn surface can be suppressed by making the corner | angular part of a thin part into a curved surface, and making the other side into an edge.
Further, if a step groove is provided on the opposite side of the thin portion, the generation of burrs can be further suppressed.
When the cap is made of metal, it is possible to use not only the metal but also a material in which a synthetic resin is laminated or coated on the metal, and decoration and printing can be easily performed, so that the color code can be distinguished. .
Further, a conventional seal member can be used as it is, and the cap may be made of plastic.

(A) is sectional drawing of the cap part of Example 1, (b) is the principal part enlarged view. (A) is the side view, (b) is the bottom view. It is. It is a bottom view at the time of providing the protrusion of Example 1 in multiple numbers. (A) is sectional drawing of the cap part of Example 2, (b) is the principal part enlarged view. 6 is a bottom view of Example 2. FIG. 6 is a cross-sectional view of a cap of Example 3. FIG. It is the bottom view. It is the principal part enlarged view. (A) is a front view of the cap of Example 4, (b) is the same sectional view. It is the principal part enlarged view. (A) is sectional drawing of the container before cutting off of a cap, (b) is principal part sectional drawing of the container after cutting off of a cap. It is a figure of the cap of Example 5, (a) is sectional drawing, (b) is a bottom view, (c) is a principal part expanded sectional view. 6 is a cross-sectional view of a synthetic resin cap of Example 6. FIG. It is the bottom view. (A) is the principal part expanded sectional view, (b) is a detailed enlarged view. It is the same perspective view. (A) is sectional drawing of the container before cutting off the cap of Example 6, (b) is principal part sectional drawing of the container after cutting off the cap.

1 Cap 1A Cap upper wall 1B Cap peripheral wall
2 Disc part 3 Thin part 4 Protrusion part 4A Indentation part 5 Protrusion part 6 Step part 7 Inclined surface 8 Step groove 10 Vial bottle 11 Opening part 12 Seal member 13 Groove bottom part 13a Corner part 13b of outer peripheral part of groove bottom part Groove bottom part Corner 14 of the inner peripheral edge of the locking means 15 neck

According to the present invention, the protruding portion of the cap is arranged on the disk portion for separation, and the protruding portion is provided on the bottom portion of the disk portion or the protruding portion. Since the protrusion is lifted by the elastic restoring force of the seal member, it is easy to remove the separated disc portion with the protrusion from the seal 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 and 2 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 wall portion 3 serving as an outer peripheral edge of the disk portion 2, and the circular portion. The projection portion 4 is integrally formed on the plate portion 2.

As clearly shown in FIG. 2B, the disc portion 2 is set to a circle having a small diameter concentric with the cap upper wall surface 1A.
A thin portion 3 is formed along the outer periphery of the disc portion 2.
In the present embodiment, the thin 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 is set to be thin (see FIG. 1B).

As shown in FIG. 2, the protrusion 4 has a substantially cylindrical shape having an upper surface and an open bottom surface, and is formed integrally with the disk portion 2, and the axis C <b> 2 of the protrusion 4 is the disk. The center of the part 2 (same as the center of the upper wall surface of the cap) C1 is disposed concentrically.

Further, at the bottom of the front disc 2, a projecting portion 5 that protrudes downward is disposed at a position spaced radially from the centers C 1 and C 2 of the disc 2 and the projection 4.
In the case of this embodiment, the protrusion 5 is formed in the disk portion 2 that is half formed at the lower portion of the protrusion 4 and the other half is connected to the protrusion 4 as clearly shown in FIG. It has the illustrated example shape.

One or a plurality of the protrusions 5 may be provided.
For example, if three protrusions 5 are arranged at intervals of 120 degrees as shown in FIG. 3, even if an uneven load is applied to the protrusions 4 from any direction, any one of the protrusions 5 can be surely pushed down strongly. it can.
Moreover, you may set all or one part of the upper surface of the projection part 4 to the inclined surface 7 which declines gradually (refer FIG. 9).
In this case, it is preferable to provide the protrusion 5 on the extended line where the inclined surface 7 descends.

The protrusion 4 is formed with a recess 4A in which a portion corresponding to the protrusion 5 is recessed in a semicircular shape in plan view, and the bottom surface protrudes downward along the arc of the recess 4A so that half of the protrusion 5 is formed. The other half is formed by projecting the bottom surface of the disk portion 2 downward.
The protrusion 5 is preferably a curved surface having a circular arc cross section or a chamfered corner so that the protrusion 5 does not bite into the seal member 12 when separated.

In this embodiment, since the corner portion of the bottomed cylindrical body has a curved surface, the seal member 12 side is further pressed by the protrusion 4 from the state of being pressed against the seal member 12 (see FIG. 1). Can be lifted up on the elastically restored seal member 12 without damaging the repulsive force of the seal member 12 (according to FIG. 11).

Further, in the illustrated example, the protrusion 5 is arranged so as to cover the protrusion 4 and the disk part 2 in half. However, in the present invention, the protrusion 5 is not limited to the above-described arrangement, or the protrusion 4 is entirely included in the protrusion 4 or the protrusion. The arrangement included in the disc part 2 excluding 4 is not concerned with the position and quantity.
Since the cap 1 of the present embodiment is configured as described above, when the projection 4 is pushed down, the thin portion 3 is broken and the disc portion 2 having the projection 4 is separated from the cap upper wall surface 1A.

As a result, the load holding the projection 5 is eliminated, the projection 5 is pushed up by the elastic restoring force of the seal member 12, and the separated disc portion 2 is lifted on the seal member 12 via the projection 5. The disk portion 2 can be easily detached from the cap upper wall surface 1A.

In the first embodiment, the projecting portion 4 is arranged concentrically with the disc portion 2. However, the axis of the projecting portion 4 may be decentered from the center of the disc portion 2.
An example is shown in FIG.
Other configurations are the same as those in the first embodiment.
That is, the protrusion 4 is substantially cylindrical and is formed integrally with the disk part 2, and the axis C2 of the protrusion 4 is the center of the disk part 2 (same as the center of the upper wall surface of the cap) C1. Is arranged at an eccentric position biased to one side (see FIG. 5).

Further, at the bottom of the disc portion 2, a projection 5 that protrudes downward is disposed at a position spaced apart from the center C2 of the disc portion 2 in a direction different from the eccentric direction of the projection 4.
The protrusion 5 has a shape in the illustrated example in which a half is formed in the lower part of the protrusion 4 and the other half is formed in the disk portion 2 connected to the protrusion 4 (see FIG. 4B).
Moreover, you may set all or one part of the upper surface of the projection part 4 to the inclined surface 7 which declines gradually (refer FIG. 9).

The protrusion 5 is preferably a curved surface having a circular arc cross section or a chamfered corner as in the first embodiment. In this embodiment, the shape of the bottomed cylindrical body is a curved surface. It is made up of.
Further, in this embodiment, the protrusion 5 is arranged so as to lie in half on the protrusion 4 and the disc part 2, but the arrangement is not limited to the above arrangement, or the protrusion 4 is entirely included, or the protrusion 4 is The arrangement included in the removed disc portion 2 may be employed.
Further, the protruding portion 4 may be located at a position separated from the center C1 of the disc portion 2, but is preferably in a direction opposite to the eccentric direction of the protruding portion 4.
Furthermore, although the case where one protrusion 5 is provided is illustrated, two or more protrusions 5 may be provided.

As shown in FIG. 4B, the thin-walled portion 3 is composed of an annular groove having a slight constant width on the bottom surface of the groove serving as the upper portion.
The corner portion 13a of the outer peripheral edge portion of the groove bottom portion 13 of the thin wall portion 3 formed of the annular groove is chamfered to form a curved surface, and the corner portion 13b of the inner peripheral edge portion of the groove bottom portion 13 is not curved and remains a corner portion. By doing so, a crack can be generated in the corner 13b of the inner peripheral edge.

Thereby, since the disc part 2 to be cut is broken along the corner part 13b, the occurrence of burrs on the fracture surface can be suppressed.
In addition, the inner peripheral edge and the outer or peripheral edge of the annular groove may be chamfered to form a curved surface.
The configuration of the thin portion and the step groove can be applied to other embodiments.

The cap peripheral wall 1 </ b> B is provided with a locking means 14 for fitting and fixing the cap 1 to the cylindrical opening 11 of the vial 10.
In this embodiment, the locking means 14 is fixed by bending the lower end of the cap peripheral wall portion 1B inwardly from the opening portion 11 along the small-diameter neck portion 15 (see FIG. 11). Means can be used.

Since the cap 1 of the second embodiment is configured as described above, when the protrusion 4 is pushed downward from the state shown in FIG. 11A, a downward force is applied to the center (axis C2) side of the eccentric protrusion 4 and the eccentricity is applied. A load is applied, and an upward force acts on the protrusion 5.
The thin-walled portion 3 is broken while the resistance to the fractured surface is reduced by the inclined state, and the protrusion 5 is placed thereon by the elastically restored seal member 12, as shown in FIG. 11B. The disc portion 2 with 4 is held in an inclined posture.
The disc part 2 with the projection part 4 separated by this can be easily detached from the seal member.

6 to 8 show the cap 1 of the third embodiment.
The cap 1 is different from the cap 1 of the first embodiment in that the outer portion of the thin portion 3 is reinforced by a step.
Moreover, although the opening of the annular groove part of the thin part 3 is formed in the upper surface of 1 A of cap upper wall surfaces, since the other structure is the same as that of Example 2, description of a common part is abbreviate | omitted.

A step portion 6 is formed concentrically and with a large diameter with the thin portion 3.
The stepped portion 6 is formed of a circular surface that is bent in a stepped manner with respect to the cap upper wall surface 1A through an annular stepped portion 6a and extends parallel to the lower surface, and the protruding portion 4 is formed in the circular surface via the thin portion 3. The attached disk part 2 is formed.
Moreover, you may set all or one part of the upper surface of the projection part 4 to the inclined surface 7 which declines gradually (refer FIG. 9).

By forming the step portion 6, the cap upper wall surface 1A can be reinforced by the folded plate structure. When the disc portion 2 is separated by the protrusion 4, the cap upper wall surface 1A outside the thin portion 3 is bent. It can be reinforced to prevent deformation.

9 and 10, there is an inclined surface 7 on the top wall surface of the eccentric protrusion 4, a configuration in which the inclined surface 7 is inclined downward toward the protrusion 5, and the vicinity of the annular groove 13. The cap 1 of Example 4 which has the structure which provided the level | step difference groove | channel 8 in FIG.
By providing the inclined surface 7 on the protrusion 4, an uneven load is applied to the disk portion 2, and the thin portion 13 can be easily broken.
Further, the cap 1 is further free of burrs and generates cracks by providing a step groove 8 on the opposite side of the

corners

13a and 13b of the annular groove 13 to the cap 1 of the second embodiment. (See FIG. 10 (a)).

The step grooves 8 may be partially provided in the radial direction as shown in FIG. 10A or may be provided in a series as shown in FIG.
In the illustrated example, the step groove 8 is disposed on the side closer to the protrusion 4 than the thin portion 3, but may be provided on the separation side.
Since other configurations are the same as those of the first embodiment, description of common portions is omitted.

FIG. 12 shows a different embodiment in which a plurality of protrusions 5 are arranged side by side.
A plurality of protrusions 5 are arranged in a symmetrical manner with respect to the center line L of the inclined surface within the disk portion 2 on the extended line in the direction in which the inclined surface 7 descends and inclines. Therefore, even if the force of the finger applied when the inclined surface 7 is pressed is swayed to the left or right, the projection 5 can reliably receive the force.
Further, in the present embodiment, the protrusion 5 is configured to be recessed directly on the surface of the disk portion 2 at a position apart from the protrusion 4 without overlapping.
Other configurations are the same as those in the above embodiment.
The configuration of the protrusions of this embodiment can be applied to the protrusions of other embodiments.

In the above-described embodiments, the caps are all made of metal. However, in the present invention, the caps may be formed of a synthetic resin.
Although the case where the projection part 4 is eccentric with respect to the disc part 2 is illustrated as Example 6, it may be arranged concentrically.

The cap 1 shown in FIGS. 13 to 17 is made of plastic.
The cap 1 has a stepped portion 6 on the cap upper surface 1A.
A thin portion 3 made of an annular groove whose upper surface is opened is formed in the step portion 6, and a disc portion 2 having the thin portion 3 as an outer peripheral edge is formed.

The disc portion 2 is integrally formed with a protrusion 4 having an axis line disposed at a position spaced from the center of the disc portion 2.
In the present embodiment, the upper surface of the protrusion 4 is set to the inclined surface 7 that is gradually inclined downward toward the protrusion 5 at the half on the protrusion 5 formation side.
Thereby, when pushing in the projection part 4, it becomes easy to give an unbalanced load.
The entire upper surface of the protrusion 4 or the surface of the inclined surface 7 may be roughened or provided with a small step or protrusion so that it can be easily pressed with a finger or non-slip.

The protrusion 5 may be disposed on the bottom surface of the protrusion 4, the bottom surface of the disk part 2 outside the protrusion part 4, or the bottom surface in a position straddling the protrusion part 4 and the disk part 2. It is provided at a position straddling the plate part 2.
The protrusions 5 may be raised and formed on the bottom surfaces of the protrusions 4 and the disk part 2 without bending them.
In this embodiment, the protrusion 5 is formed in a hollow recess whose upper surface is open as a measure for preventing sink marks in molding.

In this 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 and allows the outer diameter to be expanded and contracted, and an inward claw portion 14b formed at the lower end. It has become.
Four slits 14a are provided at equal intervals, and claw portions 14b are provided along the lower ends of the fragments of the cap peripheral wall 1B divided by the slits 14a, but the number is not particularly limited.
Other known structures can be used for the locking means.

Further, as shown in FIGS. 15A and 15B, the thin portion 3 may be provided with irregularities in the groove bottom so that the depth of the groove is partially increased.
The above configuration is not limited to the present embodiment, and may be applied to the cap 1 of other embodiments.
Thereby, the space | interval of the level | step difference groove | channel 8 and the deepest part provided in the thin part 3 becomes narrower, can isolate | separate the projection part 4 easily, and improves moldability.

In addition, when a plurality of protrusions 5 are provided, the height of the protrusions 5 is given a difference in height, so that, as with the inclined surface 7 of the protrusions 4, the protrusions are raised while maintaining the inclination. The load resistance can be reduced.
In this case, the protrusion 4 does not need to be provided with the inclined surface 7, and when the inclined surface 7 is provided, the inclination due to the height difference between the protrusions 5 is increased or decreased.
Since there is a difference in height between the heights of the plurality of protrusions 5 provided, a difference occurs in the area in contact with the seal member 12 and the pressing force, and the area at the low part is narrow and the repulsive force received is also small.
Each element of the above-described embodiments can be implemented by appropriately replacing the respective embodiments.
Further, the shape, arrangement, and quantity of the protrusions are not limited to the above embodiment.
In addition, it goes without saying that various design changes can be made without departing from the scope of the present invention.

∙ Not limited to vial caps, it can be applied as a cap structure for containers of various uses sealed with a sealing member.

Claims

A cap such as a vial or the like that is fitted over the opening covering the sealing member of a sealed container by providing an elastic sealing member at the opening, and is formed on the upper wall surface of the cap in contact with the upper surface of the sealing member A container cap comprising: a separating disk part, a thin guide part serving as an outer peripheral edge of the disk part, and a projecting part that projects integrally with the disk part and that is pressed when detached. In structure
One or a plurality of protrusions projecting downward are provided at positions spaced radially from the axis of the protrusion at the bottom of the disk or protrusion.
A cap structure for a container, wherein the protrusion is mounted on the seal member in a state where the seal member is pushed in such a manner as to be repelled.
2. The cap structure for a container according to claim 1, wherein the axis of the protruding portion is arranged at a position eccentric from the center of the disc portion.
The protrusion part which is arrange | positioned in the position spaced apart in the direction different from the eccentric direction of a protrusion part with respect to the center of this disk part at the bottom part of a disk part, and protruded below is provided. Container cap structure.
The container cap structure according to any one of claims 1 to 3, wherein the projecting portion is a projecting portion having an arcuate cross section or a corner having a curved surface.
5. The container cap structure according to any one of claims 1 to 4, wherein the upper surface of the protrusion has an inclined surface that inclines downward in the direction in which the protrusion is disposed.
The thin-walled portion is formed of an annular groove having a certain width on the bottom surface, the corner of the outer peripheral edge of the groove bottom of the annular groove is formed in a curved surface, and a crack is formed in the corner of the inner peripheral edge of the groove bottom. The container cap structure according to claim 1, wherein the container cap structure is formed.
The container cap structure according to any one of claims 1 to 6, wherein the protrusion is formed in a hollow recess having an upper surface opened.
A step groove is provided on the opposite side of the thin portion from the thin portion on the side close to the protrusion with respect to the thin portion, and the thickness between the thin portion and the step groove is set to be thin. 8. A cap structure for a container according to any one of 1 to 7.
The container cap structure according to claim 1, wherein a plurality of protrusions are provided so as to be symmetrical with respect to the center line of the inclined surface.
The container cap structure according to any one of claims 1 to 8, wherein the cap material is made of metal or plastic.
10. The container cap structure according to any one of claims 1 to 9, wherein the protrusion has a hollow or solid structure.