JP7122982B2 - tamper evident cap - Google Patents

Description

The present invention relates to a tamper evident cap.

In some cases, a tamper-evident cap is attached to the mouth of the container body to prevent tampering with the container. The tamper-evident cap allows a specific intended user (hereinafter referred to as "target user") to open the cap, and is not intended to be opened by, for example, infants and children (hereinafter referred to as "non-targeted user"). It is preferable to be able to prevent opening by

As the above-described tamper-evident cap, for example, Patent Document 1 below discloses an inner cap that is attached to the mouth and has a non-return tooth row formed on the outer peripheral surface, and an elastically deformable operation piece. and an outer cap surrounding the cap.
In the tamper-evident cap disclosed in Patent Document 1, by elastically deforming the operating piece of the outer cap, the pawl formed on the operating piece meshes with the non-return tooth row of the inner cap. In this state, by rotating the outer cap to the loose side of the inner cap, the outer cap and the inner cap are rotated together to the loose side, and the container is opened.

Japanese Patent Application Laid-Open No. 2003-104408

However, with the above-described conventional tamper-evident cap, if a non-target person presses the operation piece with a fingertip or the like when rotating the outer cap while gripping it, the claw portion and the non-return tooth row may be separated. There was a risk that the meshing storage container would be opened. That is, in the conventional tamper-evident cap, when the outer cap is rotated, the operating piece may be pressed unintentionally. Therefore, even a non-target person may be able to open the package.
In the conventional tamper-evident cap, it is necessary to rotate the outer cap while holding down the operating piece with a fingertip or the like in order to maintain engagement between the pawl portion and the non-return tooth row when opening the cap. Therefore, there is still room for improvement in terms of improving operability for the subject.

SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances described above, and provides a tamper-evident cap capable of improving operability for a target person while preventing unsealing by a non-target person.

In order to solve the above problems, the present invention proposes the following means.
A tamper-evident cap according to the present invention comprises an inner cap that can be attached to and detached from the mouth of a container body as it rotates about the cap axis with respect to the mouth of the container, and a cap that surrounds the inner cap and that is attached to the inner cap. an outer cap combined with the inner cap to be rotatable about an axis; and an outer cap assembled to the outer cap so as to be movable in the cap axis direction with respect to the outer cap while the rotation about the cap axis with respect to the outer cap is restricted. and an operating portion formed on the inner cap, wherein the inner engaging portion is formed on the inner cap, and the operating portion includes an operating engaging portion that can be engaged with the inner engaging portion in a circumferential direction around the cap axis. is formed so that the operation engaging portion rotates around the loosening restricting portion of the inner engaging portion as the outer cap and the operating portion rotate toward the loosening side with respect to the opening in the circumferential direction. a loose engagement position for restricting rotation of the outer cap with respect to the inner cap; and a position above the loose engagement position and the outer cap with respect to the inner cap toward the loose side. and a permissible position for permitting rotation of the operating portion, and the inner engaging portion is disposed movably in the cap axial direction between the outer cap to the tightening side with respect to the mouth portion in the circumferential direction. and a tightening restriction for restricting rotation of the outer cap with respect to the inner cap to the tightening side by engaging the operation engaging portion of the operating portion located at the allowable position as the operating portion rotates. The allowable position includes a tightening engagement position where the operation engagement portion engages the tightening restricting portion, a position above the tightening engagement position, and the operation engagement position. a retracted position in which the inner engaging portion is retracted upward with respect to the inner engaging portion, and the inner engaging portion moves into the loose engagement as the outer cap and the operating portion rotate toward the tightening side. a guide portion for guiding the operation portion toward the tightening engagement position by engaging the operation engagement portion of the operation portion positioned at the position; the outer cap with respect to the inner cap toward the loosening side; an inwardly inclined portion that guides the operation portion to the retracted position by slidingly contacting the operation engagement portion of the operation portion positioned at the tightening engagement position as the operation portion rotates; Between the outer cap and the operating portion, the operating portion is restrained from moving from the tightening engagement position to the loosening engagement position, and is accompanied by a pushing operation of the operating portion with respect to the inner cap. , the operation part is the tightening member A first locking body movable from the engagement position toward the loose engagement position and a movement of the operating portion positioned at the retracted position to the tightening engagement position are restrained, and the inner cap is engaged with the first locking body. and a second locking body that allows the operation portion to move from the retracted position to the tightening engagement position as the operation portion is pushed.

According to this configuration, the circumferentially connected state and non-connected state of the inner cap and the outer cap can be switched by moving the operating portion in the cap axial direction with respect to the inner cap.
That is, at the loose engagement position, the rotational force of the outer cap to the loose side with respect to the inner cap is transmitted to the inner cap via the inner engaging portion and the operating engaging portion. As a result, the tamper-evident cap can be opened by rotating the outer cap and the inner cap together with respect to the opening toward the loose side.
On the other hand, in the allowable position, the outer cap and the operating portion are allowed to rotate toward the loose side with respect to the inner cap, so even if the outer cap rotates toward the loose side, the outer cap will idle relative to the inner cap. As a result, the attached state between the inner cap and the opening is maintained. As a result, for example, unintended opening by non-target persons can be prevented.
Since movement of the operation portion positioned at the allowable position to the loose engagement position is restrained by at least the first locking body, the operation portion must be moved from the allowable position to the loose engagement position. You have to push. That is, the tamper-evident cap cannot be opened simply by rotating the outer cap to the loosening side, so that it is possible to prevent unsealing by non-target persons.
In addition, after the operating portion is moved to the loosely engaged position, the operating portion can be maintained at the loosely engaged position without continuing to press the operating portion with a finger or the like.
As described above, it is possible to improve the operability for the target person while preventing the opening by the non-target person.

Since the inner engaging portion has an inner inclined portion that guides the operation portion positioned at the tightening engagement position to the retracted position, when the outer cap is rotated to the loosening side at the tightening engagement position, The operating portion is guided to the retracted position by sliding contact between the operation engaging portion and the inner inclined portion of the operating portion. Therefore, when the outer cap is rotated toward the loosening side at the tightening engagement position, it is possible to prevent the outer cap from slipping with respect to the inner cap and removing the tamper-evident cap from the opening.

Since the inner engaging portion has a guide portion that guides the operating portion located at the loose engaging position to the tightening engaging position included in the allowable position, for example, when the tamper-evident cap is attached, By simply rotating the outer cap toward the tightening side, the operating portion positioned at the loose engagement position can be moved to the tightening engagement position.
Therefore, it is not necessary to intentionally return the operating portion to the allowable position after the operation of attaching the tamper-evident cap, so that the operability can be further improved. Since it is possible to prevent forgetting to return the operating portion to the allowable position after the tamper-evident cap is attached, it is possible to more reliably prevent unsealing by non-targeted persons.
Then, when the outer cap is rotated toward the tightening side while the operation portion is positioned at the tightening engagement position, the operation engagement portion and the tightening restricting portion are engaged, whereby the inner cap and the outer cap are engaged. Rotate to the tightening side together. As a result, a tamper-evident cap (inner cap) can be attached to the opening.
From the above, for example, when the tamper-evident cap is attached, the operating portion can be moved from the loose engagement position to the allowable position simply by rotating the outer cap to the tightening side, and the tamper-evident cap can be moved to the container body. You can do both.

Since the second locking body is arranged between the outer cap and the operation part, once the operation part is moved from the tightening position to the retracted position, the operation part is not pushed into the inner cap. It will remain in the retracted position. At this retracted position, the operation engaging portion is retracted upward with respect to the inner engaging portion. Therefore, when the outer cap is rotated toward the loosening side with the operating portion positioned at the allowable position, a torque on the loosening side is transmitted from the operating engaging portion to the inner cap via the inner engaging portion. can be suppressed, and the attachment state between the inner cap and the opening can be reliably maintained.
Moreover, when the operating portion is at the retracted position, the operating portion must be released not only from the second locking body that prevents the operating portion from moving, but also from the first locking body that prevents the operating portion from moving. Since the operation portion cannot be positioned at the loose engagement position, the pressing force required to move the operating portion from the retracted position to the loose engagement position is increased, and unsealing by non-target persons can be reliably prevented. .

Here, each part of the first locking body and the second locking body is provided integrally with the operating portion, and the operating portion includes the first locking body and the second locking body. A deformable portion may be formed to allow each portion of the to be elastically displaceable.

In this case, since the operating portion is formed with the easily deformable portion that allows each part of the first locking body and the second locking body to be elastically displaced, the operating portion can be moved from the loose engagement position to the tightening engagement position. By deforming the easily deformable portion when moving to the aligned position and the retracted position, it becomes possible to elastically displace a part of each of the first locking body and the second locking body, and operation by the subject. It is possible to surely improve the quality.

Further, the outer cap is formed in a capped cylindrical shape, the operating portion is disposed inside the outer cap, and a window hole for exposing the operating portion to the outside is formed in the top wall portion of the outer cap. The outer cap may be provided with a lid for opening and closing the window.

In this case, after the lid is opened to open the window, the operating portion can be moved from the allowable position to the loose engagement position by inserting a finger or the like into the window and pushing the operating portion. Therefore, since the tamper-evident cap cannot be opened simply by pushing the operation part and rotating the outer cap to the loose side, the part where the operation part can be pushed is limited to the part opened to the outside through the window hole. In addition, opening by non-target persons can be reliably prevented.

Further, the inner cap is engaged with the container locking portion of the mouth portion in the circumferential direction to prevent the inner cap from rotating toward the loosened side, and move the container locking portion toward the loosened side. A rideable restraining portion is formed, and the rotational torque of the inner cap with respect to the mouth portion toward the loose side required for the restraining portion to climb over the container locking portion toward the loose side is greater than or equal to the tightening engagement. the outer cap with respect to the inner cap toward the slack side required to bring the operation engagement portion of the operation portion located at the position into sliding contact with the inner inclined portion and guide the operation portion to the retracted position. may be greater than the rotational torque of

In this case, the rotational torque of the inner cap with respect to the opening toward the slackening side, which is required for the restraining portion to climb over the container locking portion toward the slackening side, is such that the operating engagement portion of the operating portion positioned at the tightening engagement position is internally moved. Since it is larger than the rotational torque of the outer cap with respect to the inner cap toward the slack side required for sliding contact with the inclined portion and guiding the operating portion to the retracted position, the outer cap is rotated toward the slack side and the operating portion is tightened. When moving from the engaging position to the retracted position, the restraining portion is locked by the container locking portion, and the rotation of the inner cap toward the loosening side with respect to the mouth portion can be suppressed.
On the other hand, when the operation portion is positioned at the loose engagement position, the rotational force of the outer cap with respect to the inner cap toward the loose side is transmitted to the inner cap via the inner engaging portion and the operating engaging portion. As a result, the tamper-evident cap can be opened by rotating the outer cap and the inner cap integrally to the loose side while the restraining portion of the inner cap climbs over the container locking portion in the circumferential direction.

Further, an operation inclined portion extending upward toward the loosened side may be formed in a portion of the operation engagement portion that makes sliding contact with the inner inclined portion.

In this case, since the operation slant portion is formed in the portion of the operation engagement portion that makes sliding contact with the inner slant portion, the outer cap and the inner cap can be separated from each other while the operation portion is positioned at the tightening engagement position. When it is rotated to the loosening side, the operation engaging portion and the inner engaging portion come into sliding contact with each other at the inclined portions. Therefore, it is possible to smoothly move the operating portion to the retracted position, thereby further improving operability, and reliably suppressing rotation of the inner cap toward the loosening side with respect to the mouth portion. be able to.

Further, the outer cap may be combined with the inner cap so as not to move in the axial direction of the cap.

In this case, since the outer cap can be stably rotated, it is possible to further improve the operability.

According to the tamper-evident cap according to the present invention, it is possible to improve operability for the target person while preventing unsealing by the non-target person.

FIG. 4 is a partial cross-sectional view of the storage container (tightening engagement position) according to the first embodiment; 4 is a partially exploded view of the engagement mechanism (tightening engagement position); FIG. It is a top view of the container concerning a 1st embodiment. FIG. 2 is a sectional view taken along line IV-IV in FIG. 1; It is a semi-longitudinal sectional view of the operation part. 4 is a partial cross-sectional view of the container (retracted position) according to the first embodiment; FIG. 4 is a partially exploded view of the engagement mechanism (retracted position); FIG. FIG. 4 is a partial cross-sectional view of the storage container (loose engagement position) according to the first embodiment, showing a state in which the lid is opened; FIG. 10 is a partially exploded view of the engagement mechanism (loose engagement position), showing a state in which the outer cap is rotated in the second rotation direction; FIG. 4 is a partial cross-sectional view of the container (loose engagement position) according to the first embodiment, showing a state in which the tamper-evident cap is placed on the mouth. FIG. 10 is a partially exploded view of the engagement mechanism (loose engagement position), showing a state in which the outer cap is rotated in the first rotation direction; It is a top view which shows the state which opened the lid|cover of the storage container which concerns on 2nd Embodiment. It is a top view which shows the state which opened the lid|cover of the storage container which concerns on 3rd Embodiment. FIG. 11 is a partial cross-sectional view of the container (tightening engagement position) according to the third embodiment;

A first embodiment of the present invention will be described below with reference to the drawings. In the following description, a storage container W constructed by attaching the tamper-evident cap 1 according to the first embodiment to the container body W1 will be described as an example.
As shown in FIG. 1, the storage container W of the present embodiment includes a bottomed cylindrical container body W1 in which contents are stored, and a topped cylindrical tamper-evident opening attached to the mouth W2 of the container body W1. A prevention cap 1 is provided. In this embodiment, the contents contained in the container main body W1 include, for example, drugs that need to be prevented from being accidentally ingested or ingested. However, the contents can be changed as appropriate.

In this embodiment, the central axes of the tamper-evident cap 1 and the container body W1 are aligned.
In the following description, each central axis of the tamper-evident cap 1 and the container body W1 is referred to as a cap axis O. As shown in FIG. In the storage container W, the tamper-evident cap 1 side is the upper side with respect to the bottom W4 of the container body W1, and the bottom W4 side of the container body W1 is the lower side with respect to the tamper-evident cap 1. When viewed from the direction of the cap axis O, the direction of rotation around the cap axis O is defined as the circumferential direction, and the direction intersecting the cap axis O is defined as the radial direction. Among the circumferential directions, the direction in which the cap axis O rotates clockwise when the container W is viewed from above is referred to as a first rotation direction M1, and the opposite direction is referred to as a second rotation direction M2.

The tamper-evident cap 1 mainly includes an inner cap 10 , an outer cap 11 and an operating portion 12 .
The inner cap 10 is detachably attached to the opening W2. Specifically, the inner cap 10 mainly has an inner ceiling wall portion 22 and an inner peripheral wall portion 23 extending downward from the outer peripheral edge of the inner ceiling wall portion 22 .

A female screw portion is formed on the inner peripheral surface of the inner peripheral wall portion 23 . The female threaded portion is screwed to a male threaded portion formed on the outer peripheral surface of the mouth portion W2. The male threaded portion is spirally formed so that the inner cap 10 is tightened when the inner cap 10 is rotated in the first rotation direction M1 with respect to the mouth portion W2. Therefore, of the circumferential directions, the first rotation direction M1 is the tightening side of the mouth portion W2 of the inner cap 10 . The second rotation direction M2 is the loosening side of the inner cap 10 with respect to the mouth portion W2.
If the inner peripheral wall portion 23 and the mouth portion W2 are configured such that the inner peripheral wall portion 23 is attached to and detached from the mouth portion W2 as the inner peripheral wall portion 23 rotates about the cap axis O with respect to the mouth portion W2, the female screw portion and the mouth portion W2 are arranged. A configuration other than the male screw portion may be used.

On the inner peripheral surface of the inner peripheral wall portion 23, a restraining portion 31 projecting radially inward is formed at a lower end portion positioned below the female thread portion. The restraining portions 31 extend in the direction of the cap axis O and are provided in plurality at intervals in the circumferential direction. The deterring portion 31 circumferentially engages with a container locking portion W3 formed at the lower end portion located below the male screw portion at the mouth portion W2 to prevent the inner cap 10 from rotating in the second rotational direction M2. In addition to being restrained, it is possible to get over the container locking portion W3 in the second rotation direction M2. The restraining portion 31 is formed in a rectangular parallelepiped shape extending in the cap axis O direction.

The container locking portion W3 protrudes radially outward from the lower end portion of the outer peripheral surface of the mouth portion W2. A plurality of container locking portions W3 are provided at intervals in the circumferential direction. As shown in FIG. 4, in a cross-sectional view orthogonal to the cap axis O, the outer surface of the container locking portion W3 presents a curvilinear shape protruding radially outward. The number of container locking portions W3 (four in the illustrated example) is less than the number of restraining portions 31 (12 in the illustrated example). A plurality of restraining portions 31 are arranged between the container locking portions W3 adjacent to each other in the circumferential direction.

The lower surface of the inner ceiling wall portion 22 is arranged at the upper end opening edge of the mouth portion W2 with the packing 32 interposed therebetween. An annular groove 22a is formed on the outer peripheral edge of the upper surface of the inner ceiling wall portion 22 and extends continuously over the entire circumference. The annular groove 22a is open radially outward. An upper tubular portion 25 extending upward is formed on the upper surface of the inner ceiling wall portion 22 . The upper cylindrical portion 25 is arranged coaxially with the cap axis O. As shown in FIG. The outer diameter of the upper cylindrical portion 25 is smaller than the inner diameter of the mouth portion W2. However, the outer diameter of the upper tubular portion 25 can be changed as appropriate.

The outer cap 11 is formed in a capped cylindrical shape, and is combined with the inner cap 10 immovably in the direction of the cap axis O with respect to the inner cap 10 and rotatable about the cap axis O with respect to the inner cap 10 . there is The outer cap 11 surrounds the inner cap 10 entirely. The outer cap 11 mainly includes a first outer cylinder 41 , a first inner cylinder 42 , and an outer ceiling wall portion 43 connecting upper end portions of the first outer cylinder 41 and the first inner cylinder 42 .

The first outer cylinder 41 surrounds the inner cap 10 from the radial outside. The length of the first outer cylinder 41 in the cap axis O direction is longer than the length of the inner cap 10 (inner peripheral wall portion 23) in the cap axis O direction. The first outer cylinder 41 surrounds the entire inner peripheral wall portion 23 from the outside in the radial direction. A through hole or the like is not formed in the first outer cylinder 41, and the inside of the first outer cylinder 41 is invisible from the outside over the entire area.

The first outer cylinder 41 has a large-diameter portion 51 located below and a small-diameter portion 52 that continues upward from the large-diameter portion 51 and has an inner diameter smaller than that of the large-diameter portion 51 .

The large diameter portion 51 surrounds the inner peripheral wall portion 23 described above from the outside in the radial direction. The inner peripheral surface of the large diameter portion 51 is in contact with or close to the outer peripheral surface of the inner peripheral wall portion 23 . An outer cap engaging portion 53 is formed on the inner peripheral surface of the large diameter portion 51 and protrudes radially inward. The outer cap engaging portion 53 is undercut-fitted to the inner cap engaging portion 24 formed on the outer peripheral surface of the inner peripheral wall portion 23 . This restricts upward movement of the outer cap 11 with respect to the inner cap 10 .

Although the configuration in which the outer cap engaging portion 53 is undercut-fitted to the inner cap engaging portion 24 has been described in this embodiment, the present invention is not limited to this configuration. That is, as long as the upward movement of the outer cap 11 with respect to the inner cap 10 is restricted, for example, a configuration without the outer cap engaging portion 53 and the inner cap engaging portion 24 may be employed.

The small diameter portion 52 extends upward from the upper opening edge of the large diameter portion 51 . The outer peripheral surfaces of the large-diameter portion 51 and the small-diameter portion 52 are continuous without steps. A connecting portion between the small diameter portion 52 and the large diameter portion 51 on the inner peripheral surface of the first outer cylinder 41 forms a stepped portion 41a facing downward. The stepped portion 41a contacts the bottom surface of the annular groove 22a of the inner ceiling wall portion 22 in the cap axis O direction. This restricts the downward movement of the outer cap 11 with respect to the inner cap 10 .

A first locking portion (each part of the first locking body and the second locking body) 55 protruding radially inward is integrally provided on the inner peripheral surface of the small diameter portion 52 . The first locking portion 55 is arranged at the center of the small diameter portion 52 in the direction of the cap axis O. As shown in FIG.
In addition, the first engaging portion 55 may be formed continuously over the entire circumference of the small diameter portion 52 in the circumferential direction, or may be formed intermittently in the circumferential direction.

The outer ceiling wall portion 43 protrudes radially inward from the upper end portion of the small diameter portion 52 . The outer ceiling wall portion 43 is formed in an annular shape and arranged coaxially with the cap axis O. As shown in FIG. The outer ceiling wall portion 43 is formed with a fitting tube 43a projecting upward. The fitting cylinder 43a is arranged coaxially with the cap axis O. As shown in FIG.
The outer cap 11 is provided with a lid body 44 that opens and closes the inner side (window hole) of the outer ceiling wall portion 43 . The lid body 44 is connected to the outer ceiling wall portion 43 via a hinge portion 44a. The hinge portion 44 a is connected to the outer peripheral edge of the outer ceiling wall portion 43 . The lid 44 is detachably fitted to the fitting tube 43a.

The first inner cylinder 42 extends downward from the inner peripheral edge of the outer ceiling wall portion 43 . The lower end opening edge of the first inner cylinder 42 is located above the upper cylinder portion 25 of the inner cap 10 . A guide groove 58 that is recessed radially inward is formed in the first inner cylinder 42 . The guide groove 58 penetrates the first inner cylinder 42 in the cap axis O direction. In this embodiment, a plurality of guide grooves 58 are formed at intervals in the circumferential direction.

The operation portion 12 mainly has a button portion 61 , an operation outer cylinder 62 , an operation intermediate cylinder 63 , an operation inner cylinder 64 , a lower connection plate 65 and an upper connection plate 66 . The operation part 12 is assembled to the outer cap 11 so as to be movable in the direction of the cap axis O with respect to the inner cap 10 and the outer cap 11 and to be non-rotatable relative to the outer cap 11 . The operating portion 12 is arranged inside the outer cap 11 .

The button portion 61 is formed in a capped tubular shape having a top wall portion and a peripheral wall portion, and is arranged coaxially with the cap axis O. As shown in FIG. The button portion 61 is arranged inside the first inner cylinder 42 of the outer cap 11 . The button portion 61 is positioned above the inner ceiling wall portion 22 of the inner cap 10 . The upper surface of the top wall portion of the button portion 61 is positioned highest in the operation portion 12 . The upper surface of the top wall portion of the button portion 61 is exposed to the outside of the outer cap 11 through the inner side of the outer ceiling wall portion 43 .
It should be noted that the top wall portion of the button portion 61 does not necessarily need to be exposed as long as the operating portion 12 is configured to be operable with at least a portion thereof exposed from the outer cap 11 .

A vertical rib 61a is formed on the outer peripheral surface of the peripheral wall portion of the button portion 61 so as to protrude radially outward and extend in the cap axis O direction. A plurality of vertical ribs 61a are formed at intervals in the circumferential direction. Each vertical rib 61a is accommodated in a plurality of guide grooves 58 separately. Thereby, the operation part 12 is arranged so as to be movable in the direction of the cap axis O with respect to the outer cap 11 while being restricted from rotating with respect to the outer cap 11 .

The operation outer cylinder 62 surrounds the button portion 61 from the outside in the radial direction. The upper end portion of the operation outer cylinder 62 is located below the top wall portion of the button portion 61 . The outer peripheral surface of the operating outer cylinder 62 is close to the inner peripheral surface of the small diameter portion 52 of the outer cap 11 .
A first locked portion (a part of the first locking body) 67 and a second locked portion (a part of the second locking body) protrude radially outward from the outer peripheral surface of the operation outer cylinder 62 . part) 68 is integrally provided. The first locked portion 67 and the second locked portion 68 are arranged in a row in the cap axis O direction. A plurality of the first locked portions 67 and the second locked portions 68 are arranged at intervals in the circumferential direction.

The first locked portion 67 is located above the second locked portion 68 .
As shown in FIG. 5, the upper portion of the outer peripheral surface of the first locked portion 67 extends radially inward as it goes upward. A lower end portion of the second locked portion 68 is formed into a curved surface that protrudes outward in the radial direction.
Note that the first locked portion 67 and the second locked portion 68 may have a rectangular shape elongated in the cap axis O direction, for example, when viewed in a longitudinal section along the cap axis O direction.

The first engaged portion 67 and the second engaged portion 68 are configured to be able to climb over the first engaging portion 55 as the operating portion 12 moves in the direction of the cap axis O with respect to the inner cap 10 and the outer cap 11. It is The first engaged portion 67 and the second engaged portion 68 are separately engaged with the first engaging portion 55 as the operation portion 12 moves in the direction of the cap axis O with respect to the inner cap 10 and the outer cap 11 . It is locked from above the locking portion 55 , thereby preventing downward movement of the operating portion 12 with respect to the outer cap 11 .

The operation outer cylinder 62 is formed with an easily deformable portion 62a that allows the first locked portion 67 and the second locked portion 68 to be elastically displaced. In this embodiment, the easily deformable portion 62a is a slit extending in the radial direction, extending in the direction of the cap axis O, and reaching the lower end opening edge of the operating outer cylinder 62, and is expandable and deformable. The easily deformable portions 62a are arranged on both sides of the first locked portion 67 and the second locked portion 68 in the circumferential direction.
Note that the easily deformable portion 62a may be appropriately changed, for example, to a thin portion instead of the slit.

The operation inner cylinder 64 is arranged coaxially with the cap axis O between the peripheral wall portion of the button portion 61 and the operation outer cylinder 62 . The operation inner cylinder 64 is inserted inside the upper cylinder portion 25 of the inner cap 10 and covers the first inner cylinder 42 of the outer cap 11 .
The lower connecting plate 65 connects the peripheral wall portion of the button portion 61 and the lower end portions of the operation inner cylinder 64 to each other. The lower connecting plate 65 is formed in an annular shape and arranged coaxially with the cap axis O. As shown in FIG. The upper surface of the lower connecting plate 65 is connected to the lower end of the vertical rib 61a.
The upper connecting plate 66 connects the upper ends of the operating outer cylinder 62 and the operating inner cylinder 64 to each other. The upper connecting plate 66 is formed in an annular shape and arranged coaxially with the cap axis O. As shown in FIG.
The intermediate operation tube 63 extends downward from a radially intermediate portion of the upper connecting plate 66 . Between the operation intermediate cylinder 63 and the operation outer cylinder 62 and the operation inner cylinder 64, radial gaps are respectively provided. The intermediate operation cylinder 63 is arranged radially outside the upper cylinder portion 25 .

An engagement mechanism 71 is arranged between the inner cap 10 and the operating portion 12 . The engagement mechanism 71 switches between a circumferentially connected state and a non-connected state between the outer cap 11 and the inner cap 10 as the operating portion 12 moves relative to the inner cap 10 in the cap axis O direction. Specifically, the engagement mechanism 71 includes an inner engagement portion 72 provided on the inner cap 10 and an operation engagement portion 73 provided on the operation portion 12 .

The inner engaging portion 72 protrudes radially outward from the outer peripheral surface of the upper tubular portion 25 . A lower end portion of the inner engaging portion 72 is connected to the upper surface of the inner ceiling wall portion 22 of the inner cap 10 . A surface of the inner engaging portion 72 facing in the circumferential direction and upward constitutes an engaging surface with the operation engaging portion 73 . The engaging surface of the inner engaging portion 72 is configured by arranging a guide portion 81, a tightening restricting portion 82, an inner inclined portion 83, and a looseness restricting portion 84 in this order along the first rotation direction M1.

The guide portion 81 is an inclined surface that linearly extends upward in the first rotation direction M1.
Note that the guide portion 81 may extend while curving upward in the first rotation direction M1. That is, in the present embodiment, the term "inclination" simply refers to a structure extending in the direction of the cap axis O toward one side in the circumferential direction.

The tightening restriction portion 82 extends upward from the upper edge of the guide portion 81 . The tightening restricting portion 82 is a flat surface facing the second rotation direction M2 and perpendicular to the second rotation direction M2.
However, the tightening restricting portion 82 may be inclined with respect to the second rotation direction M2.

The inner inclined portion 83 is an inclined surface that linearly extends downward from the upper edge of the tightening restricting portion 82 in the first rotation direction M1.
Note that the inner inclined portion 83 may extend while curving downward in the first rotation direction M1.

The looseness restricting portion 84 extends downward from the lower edge of the inner inclined portion 83 . The looseness restricting portion 84 is a flat surface facing the first rotation direction M1 and orthogonal to the first rotation direction M1. However, the looseness restricting portion 84 may extend obliquely with respect to the first rotation direction M1.
The length of the slackness restricting portion 84 is shorter than the length of the guide portion 81 and longer than the lengths of the tightening restricting portion 82 and the inwardly inclined portion 83 . The length of the tightening restricting portion 82 is the shortest among the engaging surfaces of the inner engaging portion 72 .
In this embodiment, the lower edge of the tightening restricting portion 82 (the upper edge of the guide portion 81) and the upper edge of the loosening restricting portion 84 (the lower edge of the inner inclined portion 83) are positioned at the same position in the direction of the cap axis O. ing. However, the positions of the lower edge of the tightening restricting portion 82 and the upper edge of the loosening restricting portion 84 in the direction of the cap axis O can be changed as appropriate.

The operation engaging portion 73 protrudes radially inward from the inner peripheral surface of the intermediate operation cylinder 63 . An upper end portion of the operation engaging portion 73 is connected to the lower surface of the upper connecting plate 66 . A surface of the operation engaging portion 73 facing in the circumferential direction and downward constitutes an engaging surface with the inner engaging portion 72 . As shown in FIG. 2, the engagement surface of the operation engagement portion 73 is configured by a tightening restriction portion 91, an operation inclined portion 92, and a looseness restriction portion 93 arranged in this order along the second rotation direction M2. It is

The tightening restricting portion 91 is a flat surface facing the first rotation direction M1 and orthogonal to the first rotation direction M1. However, the tightening restricting portion 91 may extend obliquely with respect to the first rotation direction M1.
The slackness restricting portion 93 is a flat surface facing the second rotation direction M2 and perpendicular to the second rotation direction M2. However, the looseness restricting portion 93 may extend obliquely with respect to the second rotation direction M2.

The operation inclined portion 92 connects the lower edges of the tightening restricting portion 91 and the looseness restricting portion 93 . The operation inclined portion 92 extends upward in the second rotation direction M2. In this embodiment, the operation inclined portion 92 linearly extends upward in the second rotation direction M2. However, the operation inclined portion 92 may be curved and extended upward in the second rotation direction M2. The operation inclined portion 92 is a portion of the operation engagement portion 73 that comes into sliding contact with the inner inclined portion 83 when the operating portion 12 positioned at the tightening position rotates relative to the inner cap 10 in the second rotational direction M2. formed.

In this embodiment, a plurality of inner engaging portions 72 and operation engaging portions 73 are arranged at intervals in the circumferential direction. However, as long as at least one inner engaging portion 72 and at least one operating engaging portion 73 are provided, they may be provided in different numbers.

The operating portion 12 has a loose engagement position (see FIGS. 8 to 11), a tightening engagement position (see FIGS. 1 and 2), and a retracted position (see FIGS. 6 and 7). It is arranged so as to be movable in the direction of the axis O.

At the loose engagement position, both the first engaged portion 67 and the second engaged portion 68 of the operation portion 12 are overriding the first engaging portion 55 downward, as shown in FIG.
At the loose engagement position, when the outer cap 11 is rotated in the second rotation direction M2, as shown in FIG. and are engaged in the circumferential direction. Thereby, at the loose engagement position, rotation of the outer cap 11 with respect to the inner cap 10 in the second rotation direction M2 is restricted via the engagement mechanism 71 . Therefore, as the outer cap 11 and the operation portion 12 rotate in the second rotation direction M2, the tamper-evident cap 1 as a whole rotates integrally with respect to the opening W2 in the second rotation direction M2.
Further, at the loose engagement position, when the outer cap 11 is rotated in the first rotation direction M1, the operating engagement portion 73 comes into contact with the guide portion 81 of the inner engagement portion 72 in the circumferential direction, as shown in FIG. As a result, the operation engaging portion 73 slides on the guide portion 81 in the first rotation direction M1. As a result, as the outer cap 11 rotates in the first rotation direction M1, the first locked portion 67 climbs over the first locking portion 55, and the operating portion 12 is loosened, as shown in FIG. Move from the engagement position to the tightening engagement position.

At the tightening engagement position, when the outer cap 11 is rotated in the first rotation direction M1, as shown in FIG. Engages with the restricting portion 91 in the circumferential direction. As a result, rotation of the outer cap 11 with respect to the inner cap 10 in the first rotation direction M<b>1 is restricted via the engagement mechanism 71 . Accordingly, as the outer cap 11 and the operation portion 12 rotate in the first rotation direction M1, the tamper-evident cap 1 as a whole rotates integrally with respect to the opening W2 in the first rotation direction M1.
Further, at the tightening engagement position, when the outer cap 11 is rotated in the second rotation direction M2, as indicated by the two-dot chain line in FIG. 72 in the circumferential direction, and the operation inclined portion 92 slides on the inner inclined portion 83 in the second rotation direction M2. As a result, as the outer cap 11 rotates in the second rotational direction M2, the operation engaging portion 73 climbs over the inner engaging portion 72, and the operating portion 12 moves from the tightening engagement position to the retracted position. At this time, as shown in FIG. By being locked from below by the locking portion 68 , the operation portion 12 is prevented from moving downward with respect to the outer cap 11 .

Here, the operation inclined portion 92 of the operation portion 12 positioned at the tightening engagement position slides in contact with the inner inclined portion 83, and the operation portion 12 is guided to the retracted position in the second rotation direction M2. The rotational torque of the outer cap 11 with respect to the inner cap 10 is the rotational torque of the inner cap 10 with respect to the mouth portion W2 in the second rotational direction M2 required for the restraining portion 31 to get over the container locking portion W3 in the second rotational direction M2. is getting smaller.
As a result, when the outer cap 11 is rotated in the second rotation direction M2 at the tightening engagement position, the rotation of the inner cap 10 in the second rotation direction M2 with respect to the mouth portion W2 is suppressed. .

At the retracted position, the operating engagement portion 73 is located above the inner engagement portion 72 as shown in FIGS. At the retracted position, the operation engaging portion 73 and the inner engaging portion 72 do not engage on both sides in the circumferential direction. That is, at the retracted position, rotation of the outer cap 11 and the operation portion 12 relative to the inner cap 10 in both the first rotation direction M1 and the second rotation direction M2 is permitted (the outer cap 11 and the operation portion 12 are allowed to rotate relative to the inner cap 10). part 12 idles).

As described above, the tightening engagement position and the retracted position are positioned above the loose engagement position, and are allowable positions that allow rotation of the outer cap 11 and the operating portion 12 with respect to the inner cap 10 in the second rotation direction M2. It has become.
In addition, the first locking portion 55 and the first locked portion 67 are disposed between the outer cap 11 and the operating portion 12, and when the operating portion 12 moves from the tightening engagement position to the loose engagement position. movement of the inner cap 10, and the operation portion 12 can move from the tightening engagement position to the loose engagement position as the operation portion 12 is pushed into the inner cap 10. .
In addition, the first locking portion 55 and the second locked portion 68 are disposed between the outer cap 11 and the operating portion 12, and are used to move the operating portion 12 from the retracted position to the tightening engagement position. and the operation portion 12 can move from the retracted position to the tightening engagement position as the operation portion 12 is pushed into the inner cap 10 .

Next, the operation of the storage container W described above will be described.
In the following description, as shown in FIGS. 1 and 2, the first locked portion 67 is locked by the first locking portion 55 from below the first locked portion 67, and the operating portion 12 is positioned at the tightening engagement position as the initial position.

In this state, when the outer cap 11 is rotated in the second rotation direction M2, as indicated by the two-dot chain line in FIG. 83 in the circumferential direction, and the operation inclined portion 92 slides on the inner inclined portion 83 in the second rotation direction M2. As a result, as the outer cap 11 rotates in the second rotational direction M2, the operating portion 12 moves upward with respect to the outer cap 11, and as shown in FIGS. climbs over the inner engaging portion 72 , and the operating portion 12 moves to the retracted position where the operating engaging portion 73 is retracted upward with respect to the inner engaging portion 72 .
As a result, the inner cap 10 does not rotate in the second rotation direction M2 because the outer cap 11 idles with respect to the inner cap 10 as the outer cap 11 rotates in the second rotation direction M2. As a result, the screwed connection between the inner cap 10 and the mouth portion W2 is not released, and the container W maintains the closed state.

When the operation portion 12 moves from the tightening engagement position to the retracted position, the second locked portion 68 climbs over the first locking portion 55, and the second locked portion 68 moves to the first locking portion. 55 engages the second engaged portion 68 from below. As a result, the operation portion 12 is prevented from moving from the retracted position to the tightening engagement position.
At this time, the top wall of the button portion 61 and the upper surfaces of the outer ceiling wall portion 43 of the outer cap 11 are substantially flush with each other, and the upper surface of the upper connecting plate 66 abuts or approaches the lower surface of the outer ceiling wall portion 43. The upper surface of the lower connecting plate 65 contacts or approaches the lower opening edge of the first inner cylinder 42 .

Next, a method for opening the container W will be described.
First, as shown in FIG. 8, the lid body 44 is rotated upward around the hinge portion 44a to be separated from the fitting tube 43a, the inside of the outer ceiling wall portion 43 is opened, and the button portion 61 is opened. The upper surface of the top wall portion is exposed to the outside of the outer cap 11 . Then, the upper surface of the top wall portion of the button portion 61 is pushed downward through the opened outer ceiling wall portion 43 to move the operation portion 12 positioned at the retracted position to the loose engagement position.

At this time, if the operation engaging portion 73 faces the guide portion 81 in the direction of the cap axis O, as described above, relative rotation between the operation portion 12 and the outer cap 11 is restricted. As the operation engaging portion 73 slides on the guide portion 81 as the portion 12 is pushed in, the operation portion 12 and the outer cap 11 rotate integrally with respect to the inner cap 10 in the second rotation direction M2. , the operating portion 12 moves downward with respect to the outer cap 11 . In the course of the operation portion 12 moving downward, the second locked portion 68 and the first locked portion 67 climb downward over the first locking portion 55 in this order. As a result, the operating portion 12 moves to the loose engagement position.
If the operation engagement portion 73 and the guide portion 81 do not face each other in the direction of the cap axis O, the pushing operation of the operation portion 12 rotates the outer cap 11 and the operation portion 12 with respect to the inner cap 10 . Instead, only downward movement of the operating portion 12 toward the loose engagement position is performed.

Next, the lid body 44 is rotated downward around the hinge portion 44a to be attached to the fitting cylinder 43a, and with the inside of the outer ceiling wall portion 43 closed, the outer cap 11 is rotated in the second rotation direction M2. When the inner engaging portion 72 and the operating engaging portion 73 are rotated, the loosening restricting portions 84 and 93 of the inner engaging portion 72 and the operating engaging portion 73 are engaged with each other in the circumferential direction. In this state, when the outer cap 11 is further rotated in the second rotational direction M2, the rotational force of the outer cap 11 in the second rotational direction M2 is transmitted to the inner cap 10 via the engagement mechanism 71. As a result, the inner cap 10 and the outer cap 11 rotate together in the second rotation direction M2. As a result, the inner cap 10 is unscrewed from the opening W2, and the container W is unsealed.

Next, a closing operation of the storage container W in a state in which the operation portion 12 is in the loosened engagement position will be described.
As shown in FIGS. 10 and 11, when the outer cap 11 is rotated in the first rotation direction M1 while the inner cap 10 is placed on the opening W2 and combined, the outer cap 11 and the operating portion 12 are moved to the inner cap. 10 in the first rotation direction M1. At this time, the operation engaging portion 73 slides on the guide portion 81 of the inner engaging portion 72 to move the operating portion 12 upward with respect to the outer cap 11 . As the operation portion 12 moves upward, the first locked portion 67 climbs over the first locking portion 55 as shown in FIG. As a result, the operation portion 12 moves from the loosening engagement position to the tightening engagement position, and as shown in FIG. Entrainment restricting portion 91 is engaged in the circumferential direction.

When the outer cap 11 is rotated in the first rotation direction M<b>1 in this state, the rotational force of the outer cap 11 in the first rotation direction M<b>1 is transmitted to the inner cap 10 via the engagement mechanism 71 . As a result, the inner cap 10 and the outer cap 11 rotate together in the first rotation direction M1. As a result, the inner cap 10 is screwed onto the opening W2, and the container W is closed.

According to the present embodiment, the circumferentially connected state and non-connected state of the inner cap 10 and the outer cap 11 can be switched by moving the operating portion 12 relative to the inner cap 10 in the cap axis O direction.
That is, at the loose engagement position, the rotational force acting on the outer cap 11 in the second rotation direction M2 is transmitted to the inner cap 10 via the engagement mechanism 71 . As a result, the container W can be opened by rotating the outer cap 11 and the inner cap 10 integrally with respect to the opening W2 in the second rotation direction M2.
On the other hand, in the allowable position, rotation of the outer cap 11 and the operating portion 12 relative to the inner cap 10 in the second rotation direction M2 is allowed. 11 idles against the inner cap 10 . This maintains the threaded state between the inner cap 10 and the opening W2. As a result, for example, unintended opening by non-target persons can be prevented.

Since the downward movement of the operation portion 12 positioned at the allowable position to the loose engagement position is restrained by at least the first locking portion (the first locking portion 55 and the first locked portion 67), the operation portion In order to move 12 from the allowable position to the loose engagement position, it is necessary to push the operating portion 12 . That is, since the tamper-evident cap 1 cannot be opened only by rotating the outer cap 11 in the second rotation direction M2, it is possible to prevent unsealing by non-target persons.
Moreover, after the operating portion 12 is moved to the loosely engaged position, the operating portion 12 can be maintained at the loosely engaged position without continuing to press the operating portion 12 with a finger or the like. can.
As described above, it is possible to improve the operability for the target person while preventing the opening by the non-target person.

Since the inner engaging portion 72 has the inner inclined portion 83 that guides the operation portion 12 positioned at the tightening engagement position to the retracted position, the outer cap 11 is rotated to the loosening side at the tightening engagement position. At this time, the operation engaging portion 73 of the operating portion 12 and the inner inclined portion 83 are brought into sliding contact with each other, thereby guiding the operating portion 12 to the retracted position. Therefore, when the outer cap 11 is rotated to the loosening side at the tightening engagement position, the outer cap 11 idles with respect to the inner cap 10, preventing the tamper-evident cap 1 from being removed from the opening W2. can do.

The inner engaging portion 72 guides the operation portion 12 positioned at the loose engagement position to the tightening engagement position included in the allowable position as the outer cap 11 rotates in the first rotation direction M1. have.
Therefore, when closing the storage container W, the operating portion 12 located at the loose engagement position can be moved to the tightening engagement position simply by rotating the outer cap 11 in the first rotation direction M1. Therefore, it is not necessary to intentionally return the operating portion 12 to the allowable position after the closing operation of the container W, so that the operability can be further improved. Since it is possible to prevent the operator from forgetting to return the operation part 12 to the allowable position after closing the container W, it is possible to more reliably prevent unsealing by a non-target person.

Since the inner engaging portion 72 and the operating engaging portion 73 have separate tightening restricting portions 82 and 91, the outer cap 11 is pushed to the first position with the operating portion 12 positioned at the tightening engaging position. When rotated in the rotation direction M1, the tightening restricting portions 82 and 91 are engaged with each other, so that the inner cap 10 and the outer cap 11 rotate together in the first rotation direction M1. As a result, the tamper-evident cap 1 can be attached to the opening W2.

As described above, for example, when closing the storage container W, the operating portion 12 can be moved from the loose engagement position to the allowable position simply by rotating the outer cap 11 in the first rotation direction M1. 1 to the container body W1.

Since the operation slant portion 92 is formed in the sliding contact portion with the inner slant portion 83 of the operation engagement portion 73, the outer cap 11 and the operation portion 12 can be engaged when the operation portion 12 is positioned at the tightening engagement position. is rotated in the second rotation direction M2, the inner engaging portion 72 and the operating engaging portion 73 come into sliding contact with each other at the inclined portions. Therefore, it is possible to smoothly move the operation portion 12 to the retracted position, thereby further improving the operability, and the inner cap 10 rotates in the second rotation direction M2 with respect to the mouth portion W2. can be reliably suppressed.

Since the outer cap 11 is immovably combined with the inner cap 10 in the direction of the cap axis O, the outer cap 11 can be stably rotated, and the operability can be further improved. .

Since the entire periphery of the inner cap 10 is surrounded by the outer cap 11, it is possible to make the appearance of the tamper-evident cap 1 equivalent to that of a normal cap that does not have an engaging mechanism 71, for example. It is possible to make it difficult for non-targets to understand how to open the package.
Moreover, since the first outer cylinder 41 of the outer cap 11 is not formed with a through hole or the like, and the inside of the first outer cylinder 41 is entirely invisible from the outside, it is difficult to mount the engaging mechanism 71. It is possible to suppress the accompanying deterioration in designability.

Since the second locking body (the first locking portion 55 and the second locked portion 68) is arranged between the outer cap 11 and the operating portion 12, the operating portion 12 can be moved to the tightening position once. After moving to the retracted position from the top, it will continue to be positioned at the retracted position unless it is pushed into the inner cap 10 . At this retracted position, the operation engaging portion 73 is retracted upward with respect to the inner engaging portion 72 . Therefore, when the outer cap 11 is rotated in the second rotation direction M2 with the operation portion 12 positioned at the allowable position, the inner cap 10 moves from the operation engagement portion 73 through the inner engagement portion 72 in the second direction. It is possible to suppress the transmission of the rotational force in the rotational direction M2, and it is possible to reliably maintain the attachment state between the inner cap 10 and the mouth portion W2.

Moreover, in the state where the operating portion 12 is located at the retracted position, not only the suppression of the movement of the operating portion 12 by the second locking body but also the suppression of the movement of the operating portion 12 by the first locking body must be released. Since the operating part 12 cannot be positioned at the loosely engaged position, the pressing force required to move the operating part 12 from the retracted position to the loosely engaged position is increased, and the unsealing by non-target persons is ensured. can be prevented.

Since the easily deformable portion 62a is formed in the operation outer cylinder 62 so that the first locked portion 67 and the second locked portion 68 can be elastically displaced, the operation portion 12 can be moved to the loose engagement position and the tightened position. By expanding and deforming the deformable portion 62a when moving to the engaged position and the retracted position, the first locked portion 67 and the second locked portion 68 can be elastically displaced. It is possible to surely improve the operability by the target person.

Since the outer cap 11 is provided with a lid body 44 for opening and closing the inner side of the outer ceiling wall part 43, after opening the lid body 44 and opening the inner side of the outer ceiling wall part 43, a finger or the like is placed on the outer ceiling wall part. 43, and pushes the upper surface of the top wall portion of the button portion 61 to move the operation portion 12 from the allowable position to the loose engagement position. Therefore, the tamper-evident cap 1 cannot be opened only by pushing the operating portion 12 and rotating the outer cap 11 in the second rotation direction M2. Coupled with the fact that it is limited to the portion opened to the outside by the inner side of 43, it is possible to reliably prevent unsealing by non-target persons.

The rotational torque of the inner cap 10 with respect to the mouth portion W2 in the second rotational direction M2 required for the restraining portion 31 of the inner cap 10 to ride over the container locking portion W3 in the second rotational direction M2 reaches the tightening engagement position. Rotation of the outer cap 11 with respect to the inner cap 10 in the second rotation direction M2 required to bring the operating inclined portion 92 of the operating portion 12 in sliding contact with the inner inclined portion 83 and guide the operating portion 12 to the retracted position. greater than the torque. Therefore, when the outer cap 11 is rotated in the second rotation direction M2 to move the operating portion 12 from the tightening engagement position to the retracted position, the restraining portion 31 is locked by the container locking portion W3. The rotation of the inner cap 10 in the second rotation direction M2 with respect to the mouth portion W2 can be suppressed.

On the other hand, when the operating portion 12 is positioned at the loose engagement position, the rotational force of the outer cap 11 with respect to the inner cap 10 in the second rotation direction M2 is applied to the inner engaging portion 72 and the operating engaging portion 73. transmitted to the cap 10; As a result, the outer cap 11 and the inner cap 10 are integrally rotated in the second rotation direction M2 while the restraining portion 31 of the inner cap 10 climbs over the container locking portion W3 in the circumferential direction. can be opened.

Next, a tamper-evident cap 2 according to a second embodiment of the invention will be described with reference to FIG.
In the second embodiment, the same reference numerals are assigned to the same components as in the first embodiment, the description thereof is omitted, and only the different points will be described.

In this embodiment, the lid body 45 is rotatably supported by the outer ceiling wall portion 43 of the outer cap 11 around a rotating shaft 45a extending parallel to the cap axis O. As shown in FIG. The lid body 45 rotates around the rotary shaft 45 a while sliding on the upper surface of the outer ceiling wall portion 43 .
Also in this embodiment, the same effects as those of the above-described embodiment are obtained.

Next, a tamper-evident cap 3 according to a third embodiment of the present invention will be described with reference to FIGS. 13 and 14. FIG.
In the third embodiment, the same reference numerals are assigned to the same components as those in the first embodiment, the description thereof is omitted, and only the different points are described.

In this embodiment, an accommodation groove 43b extending in one of the radial directions is formed in the upper surface of the outer ceiling wall portion 43 of the outer cap 11, and the lid body 46 is prevented from moving upward in the accommodation groove 43b. It is disposed so as to be slidable in the one direction while being regulated. The width of the housing groove 43b is wider than the inner diameter of the outer ceiling wall portion 43, and the inner side of the outer ceiling wall portion 43 is open at the bottom surface of the housing groove 43b. The lid body 46 has a rectangular shape elongated in the one direction when viewed from the cap axis O direction.
As shown in FIG. 14 , vertical ribs 12 a and guide grooves 11 a for restricting relative rotation of operating portion 12 and outer cap 11 are positioned between the outer peripheral surface of operating outer cylinder 62 of operating portion 12 and the first outer cap of outer cap 11 . They are formed separately on the inner peripheral surface of the cylinder 41 . The first locked portion 67 and the second locked portion 68 are provided on the outer peripheral surface of the operation outer cylinder 62 at the portion where the vertical rib 12 a is not formed. It is provided in a portion of the inner peripheral surface where the guide groove 11a is not formed.
Also in this embodiment, the same effects as those of the above-described embodiment are obtained.

The technical scope of the present invention is not limited to the above embodiments, and various modifications can be made without departing from the gist of the present invention.

In the above-described embodiment, the operating portion 12 is configured to move to the loosening engagement position, the tightening engagement position, and the retracted position. good too.

In the above-described embodiment, the outer cap 11 is provided with one first locking portion 55, and the operation portion 12 is provided with the first locked portion 67 and the second locked portion 68 along the direction of the cap axis O. , but the outer cap 11 is provided with the first engaging portion 55 and the second engaging portion along the direction of the cap axis O, and the operating portion 12 is provided with one locked portion. A configuration in which one is arranged may be adopted.

DESCRIPTION OF SYMBOLS 1, 2, 3... Tamper-evident cap 10... Inner cap 11... Outer cap 12... Operation part 31... Restraint part 43... Outer ceiling wall part (top wall part of outer cap)
44, 45, 46 Lid 55 First locking portion (parts of first locking body and second locking body)
62a... Easily deformable portion 67... First locked portion (part of first locking body)
68 . . . Second locked portion (part of second locked body)
72 Inner engagement portion 73 Operation engagement portion 81 Guide portion 82 Tightening restriction portion 83 Inner inclined portion 84 Looseness restriction portion 92 Operation inclined portion M1 First rotation direction (tightening side)
M2...Second rotation direction (slack side)
O... Cap shaft W1... Container main body W2... Mouth part W3... Container locking part

Claims (6)

an inner cap that can be attached to and detached from the opening of the container body as it rotates about the cap axis with respect to the opening of the container body;
an outer cap that surrounds the inner cap and is combined with the inner cap so as to be rotatable about the cap axis with respect to the inner cap;
an operation part assembled to the outer cap so as to be movable in the cap axial direction with respect to the outer cap, while being restricted from rotating with respect to the outer cap about the cap axis;
The inner cap is formed with an inner engaging portion,
The operation portion is formed with an operation engagement portion that can be engaged with the inner engagement portion in a circumferential direction around the cap axis,
The operation unit is
As the outer cap and the operation portion are rotated in the circumferential direction toward the loosening side with respect to the mouth portion, the operation engaging portion engages the loosening restricting portion of the inner engaging portion in the circumferential direction, thereby a loose engagement position that restricts rotation of the outer cap with respect to the cap;
Disposed movably in the axial direction of the cap between a permitting position located above the loose engagement position and permitting rotation of the outer cap and the operating portion with respect to the inner cap toward the loose side. is,
The inner engaging portion engages with the operating engaging portion of the operating portion located at the allowable position as the outer cap and the operating portion rotate toward the tightening side with respect to the mouth portion in the circumferential direction. and a tightening regulating portion that regulates rotation of the outer cap to the tightening side with respect to the inner cap,
The allowable position is
a tightening engagement position where the operation engaging portion engages the tightening restricting portion;
a retracted position located above the tightening engagement position and in which the operation engagement portion is retracted upward with respect to the inner engagement portion;
The inner engaging portion is
As the outer cap and the operating portion rotate toward the tightening side, the operating engaging portion of the operating portion located at the loose engagement position engages and moves toward the tightening engagement position. a guide section that guides the operation section;
As the outer cap and the operating portion are rotated toward the loosening side with respect to the inner cap, the operating engagement portion of the operating portion located at the tightening engagement position slides into contact with each other, moving the operating portion to the retracted position. and an inner slope that guides to
Between the outer cap and the operation part,
The operation portion is prevented from moving from the tightening engagement position to the loosening engagement position, and the operation portion moves from the tightening engagement position as the operation portion is pushed into the inner cap. a first locking body movable toward the loose engagement position;
The operating portion is prevented from moving from the retracted position to the tightening engagement position, and the operating portion moves from the retracted position to the tightening engagement position as the operation portion is pushed into the inner cap. a second stop movable into position; and a tamper evident cap. Each part of the first locking body and the second locking body is provided integrally with the operation portion,
2. The tamper-evident cap according to claim 1, wherein the operation portion is formed with a deformable portion that allows each part of the first locking body and the second locking body to be elastically displaceable. The outer cap is formed in a truncated tubular shape,
The operating portion is disposed inside the outer cap,
A window hole is formed in the top wall portion of the outer cap to expose the operation portion to the outside,
3. The tamper-evident cap according to claim 1, wherein said outer cap is provided with a lid for opening and closing said window. The inner cap is engaged with the container locking portion of the mouth portion in the circumferential direction to prevent the inner cap from rotating toward the loosened side, and can ride over the container locking portion toward the loosened side. a deterrent is formed,
The rotation torque of the inner cap with respect to the mouth portion toward the loose side, which is required for the restraining portion to climb over the container locking portion toward the loose side, is applied to the operation portion positioned at the tightening engagement position. 2. It is larger than the rotational torque of said outer cap with respect to said inner cap toward said loosening side required for bringing said operating engaging portion into sliding contact with said inner inclined portion and guiding said operating portion to said retracted position. 4. The tamper evident cap according to any one of 3 to 3. 5. The operation engaging portion according to any one of claims 1 to 4, wherein an operation inclined portion extending upward toward the loose side is formed in a portion of the operation engagement portion that makes sliding contact with the inner inclined portion. The tamper-evident cap described in . The tamper-evident cap according to any one of claims 1 to 5, wherein said outer cap is immovably combined with said inner cap in the axial direction of the cap.

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