JPH06181966A - Cap structure - Google Patents

Abstract

PURPOSE:To provide a cap structure having high airtightness or sterility, ensuring the capability of virgin proof and allowing the application of simple construction. CONSTITUTION:This cap structure is composed of a cap 1 having a male thread section formed on the external surface of the opening side end thereof, and an engagement ring 9 having a female thread section formed on the internal surface thereof and capable of engagement with the male thread section. Also, an approximately L-shaped reverse rotation preventive stopper 7 made of a neck section and a claw section extended in an approximately orthogonal direction from the neck section is projected from the external surface of the cap 1 above the male thread section. In addition, a pair of projections are formed on the edge of the ring 9 at the side of the cap 1 at a gap slightly larger than the length of the neck section of the stopper 7 in a cap peripheral direction.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a cap structure.
More specifically, the present invention relates to a cap structure that can ensure the sterility or airtightness of a container with a simple structure.

[0002]

2. Description of the Related Art Conventionally, when dissolving a powdered drug or a freeze-dried drug contained in a container such as a vial to obtain an infusion solution for infusion, in order to eliminate the complexity of operation and prevent the drug from being contaminated, An infusion container has been proposed in which a container containing a drug and a container containing a solution of the drug can be in communication with each other simply by rotating the cap (see Japanese Patent Laid-Open No. 2-1277).

[0003] When the infusion container composed of glass parts, metal parts, plastic parts and the like is disposed of after use, disassembling work is facilitated and it is possible to easily deal with separate disposal. First, a person improved and proposed an infusion container in which the cap can be easily removed from the capsule by simply rotating the cap in the reverse direction (Japanese Patent Application No. 4-33259).

The improvement of the cap in Japanese Patent Application No. 4-33259 is such that, as shown in FIG. 6, the cap is communicated with a flexible container 20 containing a dissolving or diluting solution inside via a puncture needle 21. Cap 24 of capsule 23 for storing drug container 22
And an engagement ring 25 capable of engaging with the lower end edge of the cap 24. This cap 24 is shown in FIG.
As shown in, a groove 26 in the cap circumferential direction is formed in the vicinity of the lower end of the outer peripheral wall, and an introduction portion 27 opened to the cap lower end side is formed on one side of the groove 26,
A stop 28 is formed at the other end. On the other hand, on the inner peripheral wall of the engagement ring 25, as shown in FIG. 8, ribs 29 which are introduced from the introduction portion 27 of the groove 26 and can engage with the groove 26 are formed.

[0005]

DISCLOSURE OF THE INVENTION The cap described above is
After use, the cap can be easily removed from the capsule and the contents inside the capsule can be easily taken out, and the airtightness can be satisfied for the time being.
Moreover, virgin proof can be performed, but there is a problem that the structure becomes complicated, and it is not possible to deal with the case where the airtightness is desired to be improved.

On the other hand, there is no general container that can perform virgin proof with a simple structure.

The present invention has been made in view of the above circumstances, and is excellent in airtightness or sterility while ensuring the conventional simple operability, capable of performing virgin proof, and has a simple structure. The purpose is to provide a simple cap structure.

[0008]

In the cap structure of the present invention, (1) a cap having a male screw portion formed on an outer peripheral surface of an end portion on the opening side and a female screw portion capable of being screwed with the male screw portion are provided. An engagement ring formed on the inner peripheral surface of the cap, and a substantially L-shaped reverse rotation prevention on the outer peripheral surface above the male screw portion of the cap, which includes a neck portion and a claw portion extending in a direction substantially perpendicular to the neck portion. A stopper is provided so as to project, and a pair of protrusions is formed on the end surface of the engagement ring on the cap side at a distance slightly larger than the length of the neck portion of the reverse rotation prevention stopper in the circumferential direction of the cap. 2) A cap having a male screw portion formed on the outer peripheral surface of the opening-side end portion, and a container mouth portion having a female screw portion that can be screwed with the male screw portion formed on the inner peripheral surface thereof.
On the outer peripheral surface above the male screw portion of the cap, a substantially L-shaped reverse rotation preventing stopper including a neck portion and a claw portion extending in a substantially vertical direction from the neck portion is projectingly provided, and an end face of the container mouth portion is provided. Is a pair of protrusions formed at intervals slightly larger than the length of the neck portion of the reverse rotation prevention stopper in the circumferential direction of the cap, or (3) a female screw portion is formed on the inner peripheral surface of the opening side end portion. And a container mouth portion having a male screw portion capable of screwing with the female screw portion formed on the outer peripheral surface thereof, and a neck portion and the neck portion are formed on the outer peripheral surface of the container mouth portion below the male screw portion. A substantially L-shaped reverse rotation preventing stopper consisting of a claw portion extending in a substantially vertical direction from the upper end of the cap is formed on the end surface of the cap in the circumferential direction of the container mouth portion of the neck portion of the reverse rotation preventing stopper. A pair of protrusions should be formed at slightly larger intervals It is characterized.

[0009]

The cap structure of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of the cap structure of the present invention, which is a perspective view of what can be suitably applied to the infusion container described in Japanese Patent Laid-Open No. 2-1277 mentioned above, and FIG. 2 is shown in FIG. FIG. 3 is a perspective view of the cap of the embodiment, and FIG. 3 is a perspective view of the engagement ring of the embodiment shown in FIG.

1 and 2, reference numeral 1 denotes a cap made of a cylindrical body having a top portion 2 and a cylindrical side wall 3, and a male screw portion 4 is formed on the outer peripheral surface of the opening side end portion of the cap 1. Has been done. On the outer peripheral surface of the cap 1 above the male screw portion 4, a substantially L-shaped reverse rotation preventing stopper 7 including a neck portion 5 and a claw portion 6 extending in a substantially vertical direction from the neck portion 5 is projected. There is. Reference numeral 8 is a suspension means provided on the upper surface of the top portion 2 and is used to suspend the infusion container on a stand or the like when performing infusion.

On the other hand, reference numeral 9 in FIG. 3 denotes an engaging ring having an internal peripheral surface formed with a female screw portion 10 capable of screwing with the male screw portion 4 of the cap 1, and the engaging ring 9 has a cap side. A pair of protrusions 11 are formed on the end face at intervals slightly larger than the length of the neck 5 in the circumferential direction of the cap. In this embodiment, the protrusion 11 has a substantially right-angled triangular shape, and includes a surface 11a facing each other and a surface 11b formed in a slope shape.

When the cap 1 and the engaging ring 9 are capped on the capsule of the infusion container (see 23 in FIG. 6), the neck portion 5 of the reverse rotation preventing stopper 7 has the protrusion 11 formed thereon.
The initial screwing positions of the cap 1 and the engagement ring 9 are selected so that the crowning is completed in an airtight manner in a state of being interposed.
Since the neck 5 is sandwiched between the protrusions 11 in the assembled state, the cap 1 and the engaging ring rotate together even if the cap 1 is rotated in the reverse direction, so that the cap 1 is removed from the capsule. It is not possible. In this way, the sterility inside the capsule is not impaired by mistake before or during use. And
In use, by rotating the cap 1 in the clockwise direction, the drug container in the capsule moves downward and is brought into communication with the inside of the flexible container via the puncture needle to prepare an infusion solution. After use, the reverse rotation prevention stopper 7
The cap 1 can be easily removed from the capsule by rotating the cap 1 in the reverse direction after cutting the reverse rotation prevention stopper 7 at the neck 5 by pinching and twisting the claw portion 6 of the capsule. The drug container and puncture needle can be sorted and discarded. In this way, the cap removed from the capsule no longer has the anti-rotation stopper, so that it can be confirmed that it is a used cap. In other words, the presence of the reverse rotation preventing stopper facilitates virgin proofing.

The cap 1 and the engagement ring 9 can be made of synthetic resin such as polypropylene, polyethylene, vinyl chloride resin.

FIG. 4 shows another embodiment of the cap structure of the present invention, in which the present invention is applied to an ordinary container used for storing medicines, foods and the like which are altered by opening. This embodiment has the same structure as the embodiment shown in FIG. 1 except that a female screw portion 14 is formed on the inner peripheral surface of the container mouth portion 13 of the container 12.

FIG. 5 shows still another embodiment of the cap structure according to the present invention. In this embodiment, unlike the embodiment shown in FIG. It is formed, and the male screw part 15 is formed on the container mouth side.

In the embodiment shown in FIGS. 4 to 5, the cap cannot be opened until the reverse rotation preventing stopper is cut, and the presence of this stopper can guarantee the unopening of the container.

As described above, as shown in FIGS. 4 to 5, the cap structure of the present invention can be widely applied to not only infusion containers but also general containers.

[0019]

As described above, in the cap structure of the present invention, the anti-reverse rotation stopper and the projection are engaged with each other, so that the virgin proof can be easily performed and the male screw and the female screw can be performed. Since the cap is crowned by screwing, the structure is simpler and the airtightness or sterility is further improved compared to the cap structure proposed by the present applicant (Japanese Patent Application No. 4-33259). be able to.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a cap structure of the present invention.

2 is a perspective view of the cap of the embodiment shown in FIG. 1. FIG.

FIG. 3 is a perspective view of the engagement ring of the embodiment shown in FIG.

FIG. 4 is a perspective explanatory view of another embodiment of the cap structure of the present invention.

FIG. 5 is a perspective explanatory view of still another embodiment of the cap structure of the present invention.

FIG. 6 is a sectional view of a main part of a conventional infusion container.

FIG. 7 is a perspective view of a conventional cap.

FIG. 8 is a perspective view of a conventional engagement ring.

[Explanation of symbols]

 1 Cap 4 Male screw 7 Reverse rotation prevention stopper 9 Engagement ring 10 Female screw 13 Container mouth

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Seizo Sunako 3-2-82 Fushimidai, Inagawa, Kawabe-gun, Hyogo Prefecture (72) Inventor Shuji Hasegawa 3-9-3 Honjo Nishi, Kita-ku, Osaka Nissha Co., Ltd. (72) Inventor Mitsuo Murakami 3-9-3, Honjo-nishi, Kita-ku, Osaka City Nissha Co., Ltd.

Claims (3)

[Claims] 1. A cap comprising a male screw portion formed on an outer peripheral surface of an end portion on an opening side, and an engagement ring having a female screw portion formed on an inner peripheral surface thereof, the female screw portion being engageable with the male screw portion. On the outer peripheral surface above the male screw portion of the cap, a substantially L-shaped reverse rotation preventing stopper having a neck portion and a claw portion extending in a substantially right-angled direction from the neck portion is provided in a protruding manner, and the cap of the engagement ring. A cap structure, characterized in that a pair of protrusions is formed on the side end face at an interval slightly larger than the length of the neck portion of the reverse rotation preventing stopper in the circumferential direction of the cap. 2. A cap having a male screw portion formed on the outer peripheral surface of the end portion on the opening side, and a container mouth portion having a female screw portion capable of screwing with the male screw portion formed on the inner peripheral surface thereof. On the outer peripheral surface above the male screw portion of the cap, a substantially L-shaped reverse rotation preventing stopper having a neck portion and a claw portion extending in a substantially vertical direction from the neck portion is projectingly provided, and an end surface of the container mouth portion. Has
A cap structure characterized in that a pair of protrusions are formed at intervals slightly larger than the length of the neck portion of the reverse rotation prevention stopper in the circumferential direction of the cap. 3. A cap having a female screw portion formed on the inner peripheral surface of the end portion on the opening side, and a container mouth portion having a male screw portion which can be screwed with the female screw portion formed on the outer peripheral surface thereof. A substantially L-shaped reverse rotation preventing stopper having a neck portion and a claw portion extending in a substantially vertical direction from the neck portion is projectingly provided on an outer peripheral surface of the container mouth portion below the male screw portion, and the end surface of the cap is provided. Has
A cap structure characterized in that a pair of protrusions are formed at an interval slightly larger than the length of the neck portion of the reverse rotation prevention stopper in the container mouth circumferential direction.