JP7128508B2 - Caps and capped containers - Google Patents

Description

The present invention relates to container caps and capped containers, and more particularly to caps and capped containers that combine tamper-evident and child-resistant functionality.

BACKGROUND ART Among caps for sealing containers, there are known caps having a tamper-evident function for preventing fraudulent acts such as tampering with contents of a container. For example, US Pat. No. 6,300,003 discloses a closure in which a band is removed integrally with the closure when the closure (cap) is removed from the container.

In addition, there are known caps for sealing containers, particularly pharmaceutical containers, which have a child resistance function to prevent children from easily removing the cap, opening the container, and accidentally ingesting the contents of the container. there is For example, Patent Literature 2 discloses a safety lid that cannot be opened unless the outer lid is turned while being pressed against the inner lid.

JP-A-55-154256 Japanese Patent Publication No. 8-588

However, the tamper-evident function of the closure (cap) disclosed in Patent Document 1 is easily lost by reattaching the band once removed from the container to its original location by means such as adhesive or welding. will be

Moreover, the safety lid disclosed in Patent Document 2 has a child-resistant function, but does not have a tamper-evident function. It is conceivable to give the safety lid disclosed in Patent Document 2 a tamper-evident function like the band of Patent Document 1, but the tamper-evident function like the band of Patent Document 1 has the above problems. Furthermore, if the safety lid disclosed in Patent Document 2 is also provided with a tamper-evident function, there is a problem that the number of parts increases and the manufacturing cost increases.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to obtain a cap that has both a tamper-evident function and a child-resistant function, and is composed of only two parts.

One aspect of the present invention includes an outer top plate portion having an opening in the center, a central button connected to the outer top plate portion by a connecting portion, and an outer wall extending downward from the peripheral edge of the outer top plate portion. an inner cap detachably attached to the container, comprising an outer cap, an inner top plate portion, and an inner wall extending downward from a peripheral edge of the inner top plate portion; To provide a cap in which an inner cap is fitted into an outer cap so that a is fixed in the circumferential direction. In the first state in which the cap has never been opened after the container has been closed, when the outer cap is rotated in the loosening direction or moved upward, the connecting portion is broken and the cap is removed. The center button is separated from the top plate, and only the outer cap rotates in the loosening direction, resulting in a second state.

Another aspect of the present invention includes an outer top plate portion having an opening in the center, a central button connected to the outer top plate portion by a connecting portion, and an outer wall extending downward from the peripheral edge of the outer top plate portion. an inner cap, an inner top plate portion, and an inner wall extending downward from a peripheral edge of the inner top plate portion, the inner cap being detachably attached to the container; provide a cap fitted to the In this cap, when the central button is pushed down with respect to the outer cap in the first state in which the container has never been opened after being closed, the connecting portion is broken and the central button is separated from the outer cap. and the second state in which only the outer cap rotates in the loosening direction.

According to the present invention, it is possible to obtain a cap having both a tamper-evident function and a child-resistant function and consisting of only two parts.

1 is a perspective view showing a cap according to a first embodiment of the invention; FIG. 1 is an exploded perspective view of a cap according to a first embodiment of the invention; FIG. FIG. 4 is a plan view of the inner cap of the cap according to the first embodiment of the present invention; 4 is a front view of the inner cap of the cap according to the first embodiment of the present invention; FIG. FIG. 4 is a cross-sectional view of the inner cap of FIG. 3 as seen in the VV direction; FIG. 4 is a cross-sectional view of the inner cap of FIG. 3 viewed in the VI-VI direction; FIG. 4A is a plan view and a partially enlarged view of an outer cap according to the first embodiment of the present invention; FIG. FIG. 8 is a cross-sectional view of the outer cap of FIG. 7 viewed in the VIII-VIII direction; FIG. 8 is a cross-sectional view of the outer cap of FIG. 7 viewed in the IX-IX direction; FIG. 9 is a cross-sectional view of the outer cap according to the first embodiment of the present invention as seen in the XX direction of FIG. 8; It is a bottom view of the outer cap which concerns on 1st Embodiment of this invention. Fig. 2 is a perspective view showing the cap and part of the container in the initial state of the first embodiment of the present invention; FIG. 13 is a top plan view of the cap of FIG. 12; FIG. 14 is a cross-sectional view of the cap and part of the container according to the first embodiment of the present invention, viewed in the XIV-XIV direction of FIG. 13; FIG. 15 is a cross-sectional view of the cap of FIG. 14 viewed in the XV-XV direction; FIG. 14 is a cross-sectional view of the outer cap of the cap of FIG. 13 taken along line XVI-XVI; FIG. 4 is a perspective view showing the cap and part of the container in the CR state of the first embodiment of the present invention; FIG. 18 is a top plan view of the cap of FIG. 17; FIG. 19 is a cross-sectional view of the cap and part of the container according to the first embodiment of the present invention, viewed in the XIX-XIX direction of FIG. 18; FIG. 19 is a cross-sectional view taken along line XX-XX of the outer cap of the cap of FIG. 18; FIG. 21 is a cross-sectional view showing a cross section of the outer cap in the CR2 state of the first embodiment of the present invention viewed in the same direction as in FIG. 20; FIG. 21 is a cross-sectional view showing a cross section of the outer cap in the CR3 state of the first embodiment of the present invention, viewed in the same direction as in FIG. 20; FIG. 21 is a cross-sectional view showing a cross section of the outer cap in the CR3 state of the first embodiment of the present invention, viewed in the same direction as in FIG. 20; FIG. 21 is a cross-sectional view showing a cross section of the outer cap in the middle of transition from the CR3 state to the CR1 state of the first embodiment of the present invention, viewed in the same direction as in FIG. 20; FIG. 5 is a cross-sectional view showing a cap according to a modified example of the first embodiment of the present invention and part of a container closed by the cap. FIG. 5 is a cross-sectional view showing a cap according to a second embodiment of the present invention and part of a container closed by the cap; FIG. 27 is a cross-sectional view of the cap of FIG. 26 viewed in the XXVII-XXVII direction; FIG. 27 is a cross-sectional view of the cap of FIG. 26 viewed in the XXVIII-XXVIII direction;

A cap according to an embodiment of the present invention will be described below with reference to the drawings. In each figure, the same reference numerals are given to the same or corresponding parts.

<First embodiment>
FIG. 1 is a perspective view of a cap according to a first embodiment of the invention, indicated generally at 100, shown mounted on a container 1. FIG. FIG. 1 shows the central axis C for convenience of explanation. The cap 100 is of a screw type, and seals the container 1 by rotating relative to the container 1 around the central axis C. As shown in FIG.

In this specification, a direction parallel to the central axis C is called an axial direction, a direction perpendicular to the axial direction is called a radial direction, and a circumferential direction about the central axis is called a circumferential direction. Regarding the axial direction, the upward direction toward the paper surface is assumed to be positive. The positive axial direction is also referred to as an upward direction, and the negative axial direction is also referred to as a downward direction. As for the circumferential direction, the relative direction in which the cap 100 is tightened (closed) by advancing the screw when the cap 100 is rotated with respect to the container 1 is referred to as the "tightening direction", and the direction opposite to the tightening direction is the direction in which the screw is tightened. A relative direction in which the cap 100 is loosened (opened) by retreating is called a “loosening direction”. The present specification and accompanying drawings show a right-hand threaded cap 100 that tightens when turned clockwise (right-handed) relative to the container 1 .

FIG. 2 is an exploded perspective view of the cap 100 according to the first embodiment of the invention. The cap 100 has an inner cap 2 and an outer cap 3 . The inner cap 2 is fitted in the outer cap 3 so as to be rotatable in the circumferential direction.

First, the inner cap 2 shown in FIG. 2 will be described with reference to FIGS. FIG. 3 is a plan view of the inner cap 2. FIG. FIG. 4 is a front view of the inner cap 2. FIG. FIG. 5 is a cross-sectional view of the inner cap 2 of FIG. 3 as seen in the VV direction. FIG. 6 is a cross-sectional view of the inner cap 2 of FIG. 3 viewed in the VI-VI direction.

As shown in FIG. 2, the inner cap 2 includes a disc-shaped inner top plate portion 201 centered on a central axis C (see FIG. 1) and a cylindrical shape extending downward from the peripheral edge of the inner top plate portion 201. and an inner wall 202 . The inner wall 202 has a radially inner surface and a radially outer surface, and the radially inner surface is formed with a female thread 203 to be fitted to a male thread (not shown) of the mouth of the container 1 (see FIG. 1). 5 and Figure 6). An outer peripheral rib 204 is formed on the outer surface of the inner wall 202 to protrude radially outward and extend in the circumferential direction. When the inner cap 2 moves downward relative to the outer cap 3, the outer peripheral ribs 204 come into contact with the inner peripheral ribs 310 (see FIGS. 8 and 9) of the outer cap 3 and move downward on the inner cap 2. restrict movement to This prevents the inner cap 2 from sliding downward and separating from the outer cap 3 .

In this specification, "inner" added before an element name like "inner top plate" means that the element is an element of "inner cap". Similarly, "outer" before an element name like "outer top plate" means that the element is an element of "outer cap".

A cylindrical inner cylindrical wall 205 extending upward from the inner top plate portion 201 and having a center axis C (see FIG. 1) is formed on the inner top plate portion 201 . The inner cylindrical wall 205 has a radially inner surface and a radially outer surface, and an inner engaging portion 206 projecting radially outward is formed at the upper end of the radially outer surface. The inner engaging portion 206 comes into contact with the outer engaging portion 356 of the central button 350 when the central button 350 of the outer cap 3 , which will be described later, moves upward relative to the inner cap 2 . Limit upward movement. As a result, as will be described later, it is possible to prevent tampering by replacing the contents of the container 1 without dropping the center button 350 .

The inner cylindrical wall 205 of the inner cap 2 is formed with an inner meshing portion 207 that meshes with the outer meshing portion 353 of the outer cap 3 . The inner meshing portion 207 includes a plurality of inner teeth 208 extending radially inward from the radially inner surface of the inner cylindrical wall 205 of the inner cap 2 . A more detailed structure of the inner meshing portion 207 will be described later.

The inner cap 2 further includes a wall-shaped inner assembly stopper 209 extending upward from the peripheral edge of the inner top plate portion 201 . As will be described later, the inner assembling stopper 209 cooperates with the outer assembling stopper 307 of the outer cap 3 so that the connecting portion 320 of the outer cap 3 is engaged when the inner cap 2 is fitted to the outer cap 3 for assembly. (see FIG. 7) has a function of preventing breakage.

Next, the outer cap 3 shown in FIG. 2 will be described with reference to FIGS. 7-11. FIG. 7 is a plan view and a partially enlarged view of the outer cap 3. FIG. FIG. 8 is a cross-sectional view of the outer cap 3 of FIG. 7 viewed in the VIII-VIII direction. FIG. 9 is a cross-sectional view of the outer cap 3 of FIG. 7 viewed in the IX-IX direction. FIG. 10 is a cross-sectional view of the outer cap 3 as seen in the XX direction of FIG. 11 is a bottom view of the outer cap 3. FIG.

The outer cap 3 has a main body 301 . A main body 301 of the outer cap 3 includes a disk-shaped outer top plate portion 302 centered on the central axis C (see FIG. 1) and a cylindrical outer wall 303 extending downward from the peripheral edge of the outer top plate portion 302. have In FIG. 7, the shape of the outer top plate portion 302 is a disk shape, but it is not limited to this, and may be polygonal. Therefore, the shape of the outer wall 303 viewed from the axial direction may also be polygonal. However, since the outer cap 3 needs to be fitted relatively rotatably with respect to the inner cap 2, the shape of the radially inner surface of the outer wall 303 viewed from the axial direction is as shown in FIG. It is substantially circular. An opening 330 (see FIG. 10) is provided in the center of the outer top plate portion 302 . The outer top plate portion 302 includes six inward protrusions 304 that are circumferentially spaced from each other and protrude radially inward. The number of inward protrusions 304 is not limited to six, and may be one or more, preferably two or more.

The outer cap 3 further includes a central button 350 which has substantially the same shape as the opening 330 when viewed from above and is arranged to be axially fitted into the opening 330 . The main body 301 of the outer cap 3 and the center button 350 are connected to each other by one or more connecting parts 320 . As will be described later, when an attempt is made to open the container 1 by rotating the cap 100 relative to the container 1, the connecting portion 320 is broken, and the central button 350 is separated from the main body 301 and pushed downward. becomes movable. Further, the center button 350 is pushed downward by an inclined surface 305 (see FIG. 2) of the main body 301 (see FIG. 2), which moves in the loosening direction, and displaces downward (drops). Dropping of the central button 350 means that the container 1 has been opened at least once. Since it can be clearly seen from the appearance that the central button 350 has been dropped, a A trader or the like) can know whether or not the container 1 has been opened just by looking at the container 1 . Thus, center button 350 has a tamper-evident function.

The central button 350 of the outer cap 3 preferably has an uneven surface (not shown) so that it cannot be lifted using a suction cup or the like. Further, the material of the surface of the center button 350 of the outer cap 3 is preferably a material to which an adhesive such as an adhesive tape does not adhere so that it cannot be lifted using an adhesive means such as an adhesive tape. Furthermore, after dropping, the center button 350 of the outer cap 3 is preferably fixed to the inner cap 2 in the dropped state so as not to be lifted by means such as the suction cup and the adhesive tape. The main body 301 of the outer cap 3, the central button 350 and the connecting portion 320 may be integrally formed, for example by injection molding.

The central button 350 of the outer cap 3 has an outward protrusion 351 that protrudes radially outward. Although the number of outward protrusions 351 is six in the figure, it is not limited to this, and may be one or more. The shape of the outward projecting portion 351 may be any shape as long as the central button 350 is not displaced in the circumferential direction relative to the main body 301 of the outer cap 3 during the later-described opening and closing operations.

As shown in FIG. 7, a slope 352 is provided on the side surface of each outward protrusion 351 so as to extend downward from the surface. The slope 352 and an inclined surface 305 (see FIG. 2), which will be described later, are preferably parallel. Note that the slope 352 need not be provided on the entire side surface of each outward projecting portion 351, and may be provided at least on the side surface in the tightening direction.

As shown in FIG. 2, an outer engaging portion 353 protruding downward is formed on the back surface of the center button 350 of the outer cap 3 . The outer meshing portion 353 of the center button 350 of the outer cap 3 meshes with the inner meshing portion 207 of the inner cap 2 . As a result, the central button 350 of the outer cap 3 cannot move in the circumferential direction relative to the inner cap 2, and the circumferential rotational force applied to the central button 350 of the outer cap 3 is transmitted to 2. That is, the outer cap 3 and the inner cap 2 rotate integrally.

Herein, as particularly shown in FIGS. 2 and 11, the outer meshing portion 353 of the central button 350 of the outer cap 3 is a spur gear having ten outer teeth 354 extending circumferentially outwardly. The inner meshing portion 207 of the inner cap 2 has an internal gear shape having ten internal teeth 208 extending inward in the circumferential direction. However, the shapes of the outer engagement portion 353 of the central button 350 and the inner engagement portion 207 of the inner cap 2 are not limited to this, and the circumferential rotational force applied to the central button 350 is transmitted to the inner cap 2. Any shape may be used as long as it is a thing.

As shown in FIG. 2, the bottom surface (axially lower surface) of the external teeth 354 and the top surface of the internal teeth 208 are gabled or hipped in shape (i.e., radially connected and It is preferable to have a shape with an extended slope) or a shed roof shape. Such a shape can prevent the outer teeth 354 of the outer cap 3 from riding on the inner teeth 208 of the inner cap 2 when the outer cap 3 and the inner cap 2 are assembled. Therefore, the outer meshing portion 353 of the central button 350 of the outer cap 3 can reliably mesh with the inner meshing portion 207 of the inner cap 2 .

Furthermore, as shown in FIG. 2 , an outer cylindrical wall 355 is formed on the rear surface of the center button 350 of the outer cap 3 and extends downward from the periphery of the outer engaging portion 353 . An outer engaging portion 356 protruding radially inward is formed at the lower end portion of the radially inner surface of the outer cylindrical wall 355 . The outer engaging portion 356 contacts the inner engaging portion 206 of the inner cap 2 when the central button 350 of the outer cap 3 moves upward relative to the inner cap 2 by a certain distance or more, and the central button Limit upward movement of 350 . As a result, as will be described later, it is possible to prevent tampering by replacing the contents of the container 1 without dropping the central button 350 .

As shown in FIG. 2, on the back surface of each inwardly protruding portion 304 of the outer top plate portion 302 of the main body 301 of the outer cap 3, there is provided an adhesive such that the thickness of the inwardly protruding portion 304 gradually decreases in the loosening direction. A ramp 305 is provided (see also FIG. 16). It is preferable that the inclined surface 305 and the slope of the aforementioned slope 352 are parallel. The tightening edge of each inward projection 304 is provided with a vertical wall 306 extending downwardly therefrom.

As shown in FIGS. 2, 8, 9 and 11, on the back surface of the outer top plate portion 302 of the main body 301 of the outer cap 3, an outer assembly stopper 307 projecting downward from the back surface of the outer top plate portion 302 is provided. may be formed. The outer assembly stopper 307 may contact not only the back surface of the outer top plate portion 302 of the main body 301 of the outer cap 3 but also the inner surface of the outer wall 303 . FIG. 11 shows ten outer assembly stoppers 307 . The ten outer assembly stoppers 307 are arranged at regular intervals in the circumferential direction.

When the inner cap 2 and the outer cap 3 are assembled, the lower end of the outer assembly stopper 307 of the outer cap 3 is supported by the upper end of the inner assembly stopper 209 of the inner cap 2 (see FIG. 14 described later). This prevents part of the inner cap 2 from coming into contact with the central button 350 of the outer cap 3 and pushing it upward in the axial direction when assembling the inner cap 2 into the outer cap 3 . Therefore, it is possible to prevent unintentional breakage of the connecting portion 320 during assembly.

As shown in FIG. 2 , the radially inner surface of the outer wall 303 of the body 301 of the outer cap 3 may be formed with axially extending axial ribs 308 projecting radially inwardly therefrom. The axial rib 308 may be integrally formed with the outer assembly stopper 307 . In other words, the axial rib 308 and the outer assembly stopper 307 may share a part with each other. FIG. 11 shows ten axial ribs 308 integrally formed with the outer assembly stopper 307 . Axial rib 308 may have an inclined surface 309 such that the distance between the radially inner surface of axial rib 308 and central axis C increases downwards. The inclined surface 309 allows the inner cap 2 to be smoothly fitted to the outer cap 3 when fitting the inner cap 2 to the outer cap 3 for assembly. The distance between the radially inner surface of the axial rib 308 and the central axis C is the distance between the radially outer surface of the inner top plate portion 201 of the inner cap 2 and the central axis C (that is, the radius of the inner top plate portion 201). is substantially equal to As a result, the axial ribs 308 have the function of preventing the inner cap 2 from tilting relative to the outer cap 3 during and after assembly.

In the vicinity of the lower end of the outer wall 303 of the main body 301 of the outer cap 3 , an inner peripheral rib 310 is formed that protrudes radially inward from the radially inner surface of the outer wall 303 . The inner peripheral rib 310 contacts the outer peripheral rib 204 of the inner cap 2 when the inner cap 2 moves downward relative to the outer cap 3, and the inner cap 2 slides downward from the outer cap 3. It has the function of preventing separation.

As shown in FIGS. 2, 8 and 9, further below the outer peripheral rib 204 of the outer wall 303, a portion of the container 1 (for example, the support portion 10 of the container 1 (see FIG. 14)) is in contact with the container. 1 may be formed. The outer wall 303 of the main body 301 of the outer cap 3 is supported by the container 1 via the supported portion 311 , so that the outer wall 303 is relatively inwardly and axially downward with respect to the container 1 and the inner cap 2 . don't move. Therefore, the circumferentially inward and axially downward forces applied to the main body 301 of the outer cap 3 are not transmitted to the inner cap 2 . 2, 8 and 9, the supported portion 311 has a notched shape, and the support portion 10 (see FIG. 14) of the container 1 has an outer circumferential rib shape protruding outward in the circumferential direction. The invention is not so limited.

Next, the operation of the cap 100 according to the first embodiment of the invention will be described.

a. Initial State The inner cap 2 and the outer cap 3 are each integrally formed, for example, by injection molding. After that, the inner cap 2 is fitted from below the outer cap 3, and the two are combined to manufacture the cap 100. - 特許庁After that, contents such as medicines are put into the container 1, and the cap 100 is rotated relative to the container 1 to close the container 1 firmly. In this specification, this state, that is, the state in which the container 1 has never been opened after being closed is referred to as an "initial state" or a "first state."

FIG. 12 is a perspective view showing the cap 100 and part of the container 1 according to the first embodiment of the present invention in an initial state. 13 is a top plan view of the cap 100 of FIG. 12. FIG. In FIG. 13 only the outer cap 3 of the cap 100 is visible. FIG. 14 is a cross-sectional view of the cap 100 and part of the container 1 viewed in the XIV-XIV direction of FIG. As shown in FIG. 14, the top mouth of container 1 may be sealed by a flexible sealing lid 4 . FIG. 15 is a cross-sectional view of the cap 100 of FIG. 14 viewed in the XV-XV direction. The inner teeth 208 of the inner cap 2 and the outer teeth 354 of the outer cap 3 mesh with each other. 16 is a cross-sectional view of the outer cap 3 of the cap 100 of FIG. 13, taken along line XVI-XVI. In the initial state, the vertical wall 306 of the main body 301 of the outer cap 3 and the outward protrusion 351 of the central button 350 are connected via the connecting portion 320 .

As shown in FIG. 15, the central button 350 of the outer cap 3 meshes with the inner teeth 208 of the inner cap 2 via the outer teeth 354, so that it does not rotate relative to the inner cap 2 in the circumferential direction. Therefore, as can be seen by referring to FIGS. 13 and 16, when the outer cap 3 of the cap 100 is grasped and rotated in the loosening direction in order to open the container 1, the body 301 of the outer cap 3 protrudes inward. A force in a loosening direction (counterclockwise direction in FIG. 13, leftward direction in FIG. 16) is applied to the portion 304 relative to the outward projecting portion 351 of the center button 350 . In the initial state, since the cap 100 is tightened to the container 1, the container 1 is not opened by this force, but the connecting portion 320 is broken, and the central button 350 is released from the main body 301 of the outer cap 3. To separate.

b. CR State As shown in FIG. 14, in the initial state, the upper end of the inner tooth 208 of the inner cap 2 and the outer cap 3 are between the upper end of the inner cylindrical wall 205 of the inner cap 2 and the bottom surface of the central button 350 of the outer cap 3 . , between the lower end of the outer cylindrical wall 355 of the center button 350 of the outer cap 3 and the surface of the inner top plate portion 201 of the inner cap 2, and between the center button 350 of the outer cap 3 Since there is a gap between the lower end of the outer teeth 354 and the surface of the inner top plate portion 201 of the inner cap 2, after the central button 350 is separated from the main body 301 of the outer cap 3, the central button 350 can be loosened. pushed downward by the sloping surface 305 of the body 301 moving upwards and displaces (ie, falls) until either of these gaps is eliminated. The cap 100 with the central button 350 dropped has a child resistance (hereinafter referred to as “CR”) function to prevent children from easily removing the cap 100 and opening the container 1 . In this specification, the state in which the center button 350 is dropped is referred to as a "child resistance state," a "CR state," or a "second state."

FIG. 17 is a perspective view showing the cap 100 and part of the container 1 in the CR state. 18 is a top plan view of the cap 100 of FIG. 17. FIG. 17 and 18, the outer cap 3 is rotated about the central axis C in the loosening direction by an angle θ (see FIG. 18) compared to the initial state. FIG. 19 is a cross-sectional view of the cap 100 and part of the container 1 viewed in the XIX-XIX direction of FIG. 20 is a cross-sectional view taken along line XX-XX of the outer cap 3 of the cap 100 of FIG. 18. FIG. In FIG. 20, the position of the inward projection 304 of the main body 301 and the position of the outward projection 351 of the central button 350 in the initial state of FIG. 16 are indicated by two-dot chain lines for comparison. XIX-XIX in FIG. 18 corresponds to line XIV-XIV in FIG. Line XX-XX in FIG. 18 corresponds to line XVI-XVI in FIG.

As shown in FIG. 17, when the cap 100 is viewed obliquely from above in the CR state, it can be clearly seen that the center button 350 of the outer cap 3 has fallen. Therefore, a person who handles the container 1 can know whether or not the container 1 has been opened just by looking at the container 1 . Thus, cap 100 has a tamper-evident function.

The CR function of the cap 100 in the CR state will be described with reference to FIGS. 20-24.

In FIG. 20, there is a circumferential gap between the sloped surface 305 of the inward projection 304 of the body 301 and the slope 352 of the outward projection 351 of the central button 350 . The state of the cap 100 shown in FIG. 20 is called "CR1 state". In the CR1 state, since there is this circumferential gap, even if a force is applied to the main body 301 of the outer cap 3 in the loosening direction, the inner cap 2 is pushed through the outward protrusion 351 of the center button 350 in the loosening direction. No force is transmitted, and only the inward protrusion 304 of the main body 301 moves in the loosening direction. The inclined surface 305 of the inward protrusion 304 of the main body 301 that has moved in the loosening direction then comes into surface contact with the slope 352 of the outward protrusion 351 of the central button 350 . A state in which the inclined surface 305 is in surface contact with the slope 352 is called a “CR2 state”.

FIG. 21 shows a cross section of the outer cap 3 of the cap 100 in the CR2 state viewed in the same direction as in FIG. In FIG. 21, for comparison, the position of the inward projecting portion 304 of the main body 301 in FIG. 20 is indicated by a chain double-dashed line. Comparing FIG. 21 with FIG. 20, only the inward projection 304 has moved in the loosening direction, while the outward projection 351 of the central button 350 remains stationary in the same location as in FIG.

In the CR2 state, when further force is applied to the main body 301 of the outer cap 3 in the direction of loosening, a certain amount of force is applied via the outward protrusion 351 of the central button 350 and the external teeth 354 of the central button 350 (see FIG. 15). A force in the loosening direction is transmitted to the inner cap 2 . Since the inner cap 2 is tightly fastened to the container 1 by screw action, a relatively strong force is required to rotate the inner cap 2 relative to the container 1 in the loosening direction. However, before this necessary loosening direction force is transmitted to the inner cap 2 , due to the slope of the slope 352 , the inward protrusion 304 of the body 301 climbs up the slope 352 and the outward protrusion of the central button 350 Ride on 351. A state in which the inward protrusion 304 rides on the outward protrusion 351 is called a "CR3 state." In this way, the inner cap 2 is not rotated in the loosening direction relative to the container 1, and the container 1 is not opened.

FIG. 22 shows a cross section of the outer cap 3 of the cap 100 in the CR3 state viewed in the same direction as in FIGS. 20 and 21. FIG. In FIG. 22, for comparison, the position of the inward projecting portion 304 of the main body 301 in FIG. 21 is indicated by a chain double-dashed line.

In the CR3 state, when further force is applied to the main body 301 of the outer cap 3 in the loosening direction, the inward projection 304 of the main body 301 moves in the loosening direction while remaining on the outward projection 351 of the center button 350. (FIG. 23), and then descends from the outward projecting portion 351 (FIG. 24) to return to the CR1 state. As described above, unless a sufficiently strong downward force is applied to the main body 301 of the outer cap 3, the cap 100 repeats the CR1 state, CR2 state and CR3 state in order even if a force is applied in the loosening direction. Only idling occurs, and the container 1 is not opened.

c. Opening Operation Next, the opening operation of the container 1 will be described.

In the CR2 state in which the inclined surface 305 is in surface contact with the slope 352, when a force is applied to the main body 301 of the outer cap 3 in the loosening direction, the inner cap 2 is tightened to the container 1 as described above, so that the main body 301 faces inward. Protrusion 304 attempts to climb slope 352 . When a downward force sufficient to prevent this upward movement is applied from above and a further force is applied to the main body 301 of the outer cap 3 in the loosening direction, the inner cap 2 rotates in the loosening direction relative to the container 1. A force in the direction of loosening necessary for loosening is transmitted to the main body 301 . Therefore, the inner cap 2 rotates in the loosening direction, and the container 1 can be opened.

The operation of rotating the outer cap 3 in the loosening direction while applying a downward force from above is complicated and cannot be easily performed by children. Therefore, CR function can be achieved by using the cap 100 according to the first embodiment of the present invention.

Further, the downward force required to open the cap is preferably a constant amount of force that cannot be easily applied by a child. By designing in this way, a higher CR function can be achieved. The downward force required for opening is determined by the tightening strength of the female screw 203, the inclination angles and materials of the inclined surface 305 and the slope 352, and the like. The downward force required for opening is adjusted so that children cannot easily remove the cap 100 and open the container 1 .

d. Closing Operation Next, the capping operation of the container 1 will be described.

As described above with reference to FIG. 16 , in the initial state, the vertical wall 306 of the body 301 of the outer cap 3 and the outward protrusion 351 of the central button 350 are connected via the connecting portion 320 . When force is applied to the main body 301 of the outer cap 3 in the tightening direction in the initial state, the vertical wall 306 of the inward protrusion 304 of the main body 301 pushes the outward protrusion 351 of the central button 350 in the tightening direction (right in FIG. 16). direction). As a result, force in the tightening direction is transmitted to the inner cap 2 via the outer meshing portion 353 of the central button 350 . Thus, in the first embodiment of the present invention, the female screw 203 of the inner cap 2 can be tightened to close the container 1 in the initial state, that is, without dropping the central button 350 .

Similarly, in the CR state of FIG. 20, the female thread 203 of the inner cap 2 is tightened by pushing (turning) the outward protrusion 351 of the center button 350 in the tightening direction (rightward in FIG. 20) by the vertical wall 306. The container 1 can be capped.

The cap 100 according to the first embodiment of the present invention can prevent tampering by replacing the contents of the container 1 without activating the tamper-evident function of the cap 100, that is, without dropping the central button 350. can.

For example, as a tampering act, it is assumed that the outer cap 3 is strongly pulled up and removed from the inner cap 2, and then the inner cap 2 is removed from the container 1 and the contents of the container 1 are replaced. However, as shown in FIG. 14, when the central button 350 of the outer cap 3 is moved upward relative to the inner cap 2, the outer engaging portion 356 of the central button 350 is moved to the inner engaging portion of the inner cap 2. 206, the upward movement of the center button 350 is restricted. When the outer engaging portion 356 of the central button 350 is in contact with the inner engaging portion 206 of the inner cap 2 and the outer cap 3 is further pulled up, the main body 301 of the outer cap 3 and the central button 350 are connected. The connecting portion 320 is broken, and the central button 350 falls. Therefore, the cap 100 according to the first embodiment of the present invention can prevent tampering by replacing the contents of the container 1 without dropping the central button 350 .

In addition, the following acts are assumed as falsification acts. That is, first, the outer cap 3 is brought into close contact with the inner cap 2 by applying a strong downward force to the outer cap 3 or by gripping the outer cap 3 strongly and applying a circumferentially inward force. Next, the outer cap 3 is rotated in the loosening direction. Since the inner cap 2 is in close contact with the outer cap 3 , it rotates together with the outer cap 3 . Therefore, the inner cap 2 is removed from the container 1 without the connecting portion 320 breaking and the center button 350 falling. In this manner, the act of removing the cap 100 from the container 1 and replacing the contents of the container 1 is envisioned. However, as shown in FIG. 14, the outer wall 303 of the main body 301 of the outer cap 3 is supported by the supporting portion 10 of the container 1 via the supported portion 311, so that the container 1 and the inner cap 2 are , circumferentially inward and axially downward relative to each other. Therefore, even if a strong downward force is applied to the outer cap 3, or if the outer cap 3 is strongly gripped and a circumferentially inward force is applied, the outer cap 3 does not come into close contact with the inner cap 2, and this force is applied to the inner cap. It is not transmitted to cap 2. In other words, forces applied to outer cap 3 escape to container 1 . Therefore, it is not possible to tamper with the contents of the container 1 by rotating the inner cap 2 in the loosening direction to open it without dropping the central button 350 . Thus, the cap 100 according to the first embodiment of the present invention can prevent tampering by replacing the contents of the container 1 without dropping the central button 350 .

Furthermore, with conventional tamper-evident containers, it is easy to tamper with a tamper-evident band or the like that has been removed from the container and reattached to its original location by means of adhesive or welding. I had a problem. However, in the cap 100 according to the first embodiment of the present invention, when the cap is opened, the connecting portion 320 is broken and the center button 350 drops, so the tamper-evident function cannot be easily restored. Furthermore, as described above, if the surface of the center button 350 is uneven or the material of the surface is a material such as adhesive tape that does not adhere to the adhesive, the dropped center button 350 cannot be lifted. Further, as described above, the central button 350 of the outer cap 3 is preferably fixed to the inner cap 2 in the dropped state after being dropped so as not to be lifted by means such as suction cups and adhesive tape. For example, after the connecting portion 320 is broken, the center button 350 is pushed downward by an inclined surface 305 of the main body 301 that moves in the loosening direction (see, for example, FIGS. 2, 16 and 21), and this The downward force engages with the inner cap 2 (for example, part of the inner cylindrical wall 205, see, for example, FIG. 14), and is fixed to the inner cap 2 in a dropped state. As a result, even if the cap 100 is turned upside down, the center button 350 remains in the dropped state and does not move, so the tamper-evident function cannot be restored.

As described above, the cap 100 according to the first embodiment of the present invention is a tamper-proof device that allows one to know at a glance whether or not the container 1 has been opened, and that can effectively prevent tampering. It provides an evidence function and a CR function.

Furthermore, in the prior art, both the cap having the tamper-evident function and the cap having the CR function required two or more parts to have only one of the functions. On the other hand, although the cap 100 according to the first embodiment of the present invention has a two-part structure, this structure alone can have both the tamper-evident function and the CR function. In this regard, the cap 100 according to the first embodiment of the present invention is also advantageous in terms of cost.

Next, a modification of the first embodiment of the invention will be described. FIG. 25 is a cross-sectional view showing a cap according to a variant of the first embodiment of the invention, generally designated 150, and a portion of the container 1 closed by the cap 150. FIG. FIG. 25 shows an initial state in which the container 1 has never been opened after being closed. In the following description, in principle, the points different from the first embodiment of the present invention will be mainly described, and redundant description of other portions will be omitted.

In the above description, the supported portion 311 of the outer cap 3 (see, for example, FIGS. 2, 8, 9, and 14) has a notched shape, and the support portion 10 of the container 1 (see FIG. 14) Although the peripheral rib shape (flange-like shape) protrudes outward in the circumferential direction, the present invention is not limited to this. For example, as shown in FIG. 25, the supported portion 315 of the outer cap 3 is the lower end of the outer wall 303 of the main body 301 of the outer cap 3, and the support portion 11 of the container 1 is supported therein when closed. It may be a groove circumferentially provided in the surface of the body of the container 1 (for example, the shoulder of the container 1) so that the 315 fits therein. Even with such a configuration, the outer wall 303 is supported by the supporting portion 11 of the container 1 via the supported portion 315, and extends circumferentially inward and axially downward with respect to the container 1 and the inner cap 2. do not move relative to each other. Therefore, even if a circumferentially inward force and an axially downward force are applied to the main body 301 of the outer cap 3 , this force is not transmitted to the inner cap 2 . Therefore, the cap 150 according to the modified example of the first embodiment of the present invention also prevents tampering by rotating the inner cap 2 in the loosening direction to open it without dropping the central button 350 and replacing the contents of the container 1. It has the effect of

<Second embodiment>
FIG. 26 is a cross-sectional view showing a cap according to a second embodiment of the invention, generally designated 200, and a portion of the container 1 closed by the cap 200. FIG. FIG. 26 shows the initial state in which the container 1 has never been opened after being closed. In the following description, in principle, the points different from the first embodiment of the present invention will be mainly described, and redundant description of other portions will be omitted.

In the first embodiment of the present invention, as shown in FIG. 15, in the initial state, the inner teeth 208 of the inner cap 2 and the outer teeth 354 of the outer cap 3 mesh with each other. 26, in the initial state, the inner meshing portion 207 of the inner cap 2 and the outer meshing portion 353 of the outer cap 3 are not meshed. Therefore, even if the outer cap 3 is rotated in the loosening direction, no force in the loosening direction is transmitted to the inner cap 2, and the container 1 is not opened.

FIG. 27 is a cross-sectional view of the cap 200 of FIG. 26 viewed in the XXVII-XXVII direction. FIG. 28 is a cross-sectional view of the cap 200 of FIG. 26 viewed in the XXVIII-XXVIII direction. 27 and 28, the tightening direction is the clockwise direction and the loosening direction is the counterclockwise direction.

As shown in FIG. 27, on the radially outer surface of the inner wall 202 of the inner cap 2 (preferably, the radially outer surface of the inner assembly stopper 209), a plurality of grooves are circumferentially spaced apart from each other. An internal plug projection 210 is provided. Each inner plug projection 210 is formed on the radially outer wall surface of the inner assembly stopper 209 so as to be inclined from the radial direction outward toward the loosening direction, and the tip of the inner plug projection 210 extends toward the main body of the outer cap 3 . It is in circumferentially slidable contact with the radially inner surface of the outer wall 303 of 301 . The inner plug protrusion 210 is flexible and allows the outer cap 3 to rotate (idle) relative to the inner cap 2 in the loosening direction.

As shown in FIG. 27, the radial inner surface of the outer wall 303 of the main body 301 of the outer cap 3 is provided with a plurality of outer plug projections 312 that are circumferentially spaced apart from each other. The tightening direction side surface 313 of each outer plug projection 312 is preferably perpendicular to the radially inner surface of the outer wall 303 of the main body 301 of the outer cap 3 . Alternatively, it is preferable that the tightening direction side surface 313 of each outer plug projection 312 forms an acute angle with the radially inner surface of the outer wall 303 of the main body 301 of the outer cap 3 . The loosening side surface 314 of each outer plug projection 312 may be perpendicular to the radially inner surface of the outer wall 303, but is a gentle slope (forms an obtuse angle with the radially inner surface of the outer wall 303). ) is preferred.

In the initial state, when the outer cap 3 is turned in the tightening direction relative to the inner cap 2 , the tightening direction side surface 313 of the outer plugging projection 312 of the outer cap 3 is aligned with the inner plugging projection 210 of the inner cap 2 . The force in the tightening direction applied to the outer cap 3 is transmitted to the inner cap 2. Therefore, the container 1 can be closed by rotating the inner cap 2 in the tightening direction.

On the other hand, when the outer cap 3 is turned in the loosening direction relative to the inner cap 2 , the loosening direction side surface 314 of the outer plugging protrusion 312 of the outer cap 3 is aligned with the inner plugging protrusion 210 of the inner cap 2 . It contacts the tightening direction side surface 211 . When a further force is applied to the outer cap 3 in the loosening direction from this state, the inner plug protrusion 210 of the inner cap 2 has flexibility, so that the outer plug protrusion 312 of the outer cap 3 moves inside the inner cap 2. It is possible to proceed further in the loosening direction beyond the plugging projection 210 . Therefore, the outer cap 3 rotates relatively to the inner cap 2 in the direction of loosening, and the force in the direction of loosening is not transmitted to the inner cap 2, so that the container 1 cannot be opened.

In the second embodiment of the present invention, even if the outer cap 3 is rotated relative to the inner cap 2 in the initial state, the connecting portion 320 is not broken. In order to shift from the initial state to the CR state, the center button 350 of the outer cap 3 is pressed downward to break the connecting portion 320 and the center button 350 is pressed down. As a result, the inner meshing portion 207 of the inner cap 2 and the outer meshing portion 353 of the outer cap 3 are meshed. The CR function of the CR state cap 200 is the same as that of the first embodiment of the present invention.

In the first embodiment of the present invention, when the cap 100 is rotated in the loosening direction to open the container 1, the central button 350 falls down, whereas the second embodiment of the present invention. has a configuration in which the container 1 cannot be opened unless the central button 350 is pushed down.

With the cap 200 according to the second embodiment of the present invention, as with the cap 100 according to the first embodiment of the present invention, whether or not the container 1 has been opened can be known at a glance, and , a tamper-evident function that can effectively prevent falsification, and a CR function. Furthermore, the cap 200 according to the second embodiment of the present invention has two functions of a tamper-evident function and a CR function with a two-part structure, and is advantageous also in terms of cost.

1 container 2 inner cap 3 outer cap 10 support portion 100 cap 201 inner top plate portion 202 inner wall 203 female screw 204 outer peripheral rib 205 inner cylindrical wall 206 inner engaging portion 207 inner meshing portion 208 inner teeth 209 inner assembly stopper 210 inner closure projection 211 tightening direction side surface 301 main body 302 outer top plate portion 303 outer wall 304 inward projection portion 305 inclined surface 306 vertical wall 307 outer assembly stopper 308 axial rib 309 inclined surface 310 inner peripheral rib 311 supported portion 312 outer plug projection 313 tightening direction side surface 314 loosening direction side surface 320 connecting portion 330 opening 350 center button 351 protrusion 352 slope 353 outer meshing portion 354 outer teeth 355 outer cylindrical wall 356 outer engaging portion

Claims (18)

an outer cap comprising an outer top plate portion having an opening in the center, a center button connected to the outer top plate portion by a connecting portion, and an outer wall extending downward from a peripheral edge of the outer top plate portion;
an inner cap detachably attached to a container, comprising an inner top plate portion and an inner wall extending downward from a peripheral edge of the inner top plate portion;
The inner cap is fitted into the outer cap so that the central button is fixed to the inner top plate portion in the circumferential direction,
The inner cap is
the disk-shaped inner top plate portion centered on the central axis;
the cylindrical inner wall extending downward from the peripheral edge of the inner top plate;
a female thread formed on the radially inner surface of the inner wall and detachably fitted to the male thread of the container;
and an inner meshing portion formed on the inner top plate portion,
The outer cap is
the outer top plate portion disposed around the opening and centered on the central axis;
the center button arranged in the opening and connected to the outer top plate portion by the connecting portion;
The outer top plate portion includes an inward protrusion that protrudes radially inward from the peripheral edge of the opening,
The inward protrusion has a vertical wall extending downward from the edge of the inward protrusion in the tightening direction, and an axis of the inward protrusion extending from the tightening direction to the loosening direction on the back surface of the inward protrusion. a slanted surface with a gradually decreasing thickness in the direction;
The center button
an outward protrusion that protrudes radially outward;
a slope formed on the edge of the surface of the outward protrusion in the tightening direction and having a slope that descends from the loosening direction toward the tightening direction;
In the first state in which the container has never been opened after being closed, when the outer cap is rotated in a loosening direction or moved upward, the connecting portion is broken and the outer cap is broken. A cap, wherein the central button is separated from the top plate portion, and only the outer cap rotates in the loosening direction in a second state. In the second state,
When a force is applied to the outer cap in a loosening direction, the inclined surface of the inward protrusion contacts the slope of the outward protrusion of the central button, and then slides on the slope to riding on the outward protrusion of the central button, thereby preventing the inner cap from rotating in a direction to loosen it relative to the container;
When a force is applied to the outer cap in a loosening direction while applying a downward force, the inclined surface of the inward protrusion pushes the slope of the outward protrusion of the center button in contact therewith, 2. The cap according to claim 1 , wherein a force in the loosening direction is thereby transmitted to the inner cap to rotate the inner cap in the loosening direction relative to the container to open the cap. The center button
an outer meshing portion protruding downward from the back surface of the center button and meshing with the inner meshing portion of the inner cap so that the outer cap and the inner cap rotate integrally about a central axis;
an outer engaging portion formed on the rear surface of the center button and abutting on an inner engaging portion provided on the inner cap to restrict upward movement of the center button relative to the inner cap. The cap according to claim 1 or 2 , wherein An inner cap that is detachably attached to the mouth of a container, and an outer cap that covers the inner cap and is fitted so as to be relatively rotatable with respect to the inner cap, and has a tamper-evident function. A cap that also has a child resistance function,
The inner cap is
a disc-shaped inner top plate centered on the central axis;
a cylindrical inner wall extending downward from the peripheral edge of the inner top plate;
a female thread formed on the radially inner surface of the inner wall and detachably fitted to the male thread of the container;
an inner meshing portion formed on the inner top plate;
and an inner engaging portion,
The outer cap includes a main body having an opening around the central axis, and a central button arranged to be axially fitted into the opening,
the body of the outer cap,
a hollow outer top plate centered on the central axis, which is arranged around the opening;
an inward protrusion projecting radially inward from a peripheral edge of the opening of the outer top plate, the vertical wall extending downward from an edge of the inward protrusion in a tightening direction; and the inward protrusion. the inward protruding portion having, on the rear surface of the portion, an inclined surface in which the axial thickness of the inward protruding portion gradually decreases as it progresses from the tightening direction to the loosening direction;
an outer wall extending downward from the peripheral edge of the outer top plate,
the central button of the outer cap,
an outward protrusion that protrudes radially outward;
a slope formed on the edge of the surface of the outward protrusion in the tightening direction and having a slope that descends from the loosening direction toward the tightening direction;
an outer meshing portion protruding downward from the rear surface of the center button and meshing with the inner meshing portion such that the outer cap and the inner cap rotate integrally about a central axis;
an outer engaging portion formed on the back surface of the central button, engaged with the inner engaging portion, and restricting upward movement of the central button relative to the inner cap;
In a first state in which the container has never been opened after being closed by the cap,
the central button of the outer cap is supported by the main body via a connecting portion;
When a force is applied to the body of the outer cap in a tightening direction, the vertical wall of the inward protrusion of the body presses the outward protrusion of the central button in the tightening direction, thereby is transmitted to the inner cap, and the inner cap can be closed by rotating the inner cap relative to the container in the tightening direction without breaking the connecting portion,
When a force is applied to the main body of the outer cap in the loosening direction or in the axial direction, the inward protrusion of the main body moves in the loosening direction or upward relative to the outward protrusion of the central button. As a result, the connecting portion is broken, the central button is separated from the main body of the outer cap and displaced downward, and the cap rotates only in the loosening direction. transition to the state
In the second state,
When a force is applied to the body of the outer cap in a loosening direction, the inclined surface of the inward protrusion of the body contacts the slope of the outward protrusion of the central button, and then the slope. and rides on the outward protrusion of the central button such that the inner cap cannot be rotated in a loosening direction relative to the container,
The inclination of the inward protrusion of the body when a force in a loosening direction is applied to the body of the outer cap while applying a downward force of a certain magnitude that cannot be easily applied by a child. A force in the loosening direction is transmitted to the inner cap via the surface, the slope of the outward protrusion of the center button in contact therewith, the outer engagement portion, and the inner engagement portion engaged therewith. 1. A cap which is opened by rotating said inner cap in a loosening direction relative to said container. an outer cap comprising an outer top plate portion having an opening in the center, a center button connected to the outer top plate portion by a connecting portion, and an outer wall extending downward from a peripheral edge of the outer top plate portion; ,
an inner cap detachably attached to a container, comprising an inner top plate portion and an inner wall extending downward from a peripheral edge of the inner top plate portion;
A cap in which the inner cap is fitted in the outer cap,
In a first state in which the container has never been opened after being closed, when the central button is pushed down with respect to the outer cap, the connecting portion is broken, and the outer cap is removed from the central button. are separated, and only the outer cap rotates in the loosening direction, resulting in a second state. The inner cap is
the disk-shaped inner top plate portion centered on the central axis;
the cylindrical inner wall extending downward from the peripheral edge of the inner top plate;
a female thread formed on the radially inner surface of the inner wall and detachably fitted to the male thread of the container;
one or more inner plug protrusions formed on the radially outer surface of the inner wall;
and an inner meshing portion formed on the inner top plate portion,
The outer cap is
the outer top plate portion disposed around the opening and centered on the central axis;
a center button disposed in the opening and connected to the outer top plate by a connecting portion;
the outer wall extending downward from the peripheral edge of the outer top plate;
one or more outer plugging projections formed on the radially inner surface of the outer wall;
Further, the outer top plate portion is an inward protruding portion that protrudes radially inward from the peripheral edge of the opening, and the back surface of the inward protruding portion is provided with the above-mentioned as it progresses from the tightening direction to the loosening direction. the inward projection having an inclined surface with a gradually decreasing thickness in the axial direction of the inward projection;
The center button
an outward protrusion that protrudes radially outward;
a slope formed on the edge of the surface of the outward protrusion in the tightening direction and having a slope that descends from the loosening direction toward the tightening direction;
In the first state,
The central button is supported by the outer top plate via the connecting portion,
When a force is applied to the outer cap in the tightening direction, the outer plugging protrusion engages the inner plugging protrusion and pushes it in the tightening direction, thereby preventing the inner plug from breaking the connecting portion. The cap can be closed by rotating it in a tightening direction relative to the container,
When a force is applied to the outer cap in the loosening direction, the outer plugging protrusion does not engage with the inner plugging protrusion, and the outer cap rotates idly with respect to the inner cap, making it impossible to open the plug,
When a downward force is applied to the central button of the outer cap, the connecting portion is broken, the central button is separated from the outer top plate portion and displaced downward, and the cap is moved to the second state. 6. The cap of claim 5 , wherein the cap transitions to . In the second state,
When a force is applied to the outer cap in a loosening direction, the inclined surface of the inward protrusion contacts the slope of the outward protrusion of the central button, and then slides on the slope to riding on the outward protrusion of the central button, thereby preventing the inner cap from rotating in a direction to loosen it relative to the container;
When a force is applied to the outer cap in a loosening direction while applying a downward force, the inclined surface of the inward protrusion pushes the slope of the outward protrusion of the center button in contact therewith, 7. The cap according to claim 6 , wherein a force in the loosening direction is thereby transmitted to the inner cap, and the inner cap can be rotated in the loosening direction relative to the container to be opened. the tightening direction side surface of the outer plug projection is perpendicular to or forms an acute angle with the radially inner surface of the outer wall;
8. The cap according to claim 6 , wherein the loosening direction side surface of the outer plugging projection is perpendicular to or forms an obtuse angle with respect to the radially inner surface of the outer wall. The number of the internal plug projections is plural, and the internal plug projections are spaced apart from each other in the circumferential direction,
9. The cap according to any one of claims 6 to 8 , wherein the number of the external plugging projections is plural, and the external plugging projections are spaced apart from each other in the circumferential direction. The center button
an outer meshing portion protruding downward from the back surface of the center button, wherein in the first state it does not mesh with the inner meshing portion, and in the second state it meshes with the inner meshing portion and the outer cap and an outer meshing portion in which the inner cap and the inner cap rotate integrally about a central axis;
an outer engaging portion formed on the rear surface of the center button and abutting on an inner engaging portion provided on the inner cap to restrict upward movement of the center button relative to the inner cap. The cap according to any one of claims 6 to 9 . A cylindrical inner cylindrical wall centered on the central axis formed on the inner top plate portion of the inner cap and extending upward from the inner top plate portion; an outer cylindrical wall having a cylindrical shape centered on the central axis, formed and extending downwardly from a radial periphery of the outer meshing portion;
The inner cap includes an inner engaging portion formed at the upper end portion of the radial outer surface of the inner cylindrical wall of the inner cap and protruding radially outward,
The outer cap includes an outer engaging portion formed at a lower end portion of a radially inner surface of the outer cylindrical wall of the outer cap and protruding radially inward,
In the first state and the second state, the inner cylindrical wall of the inner cap is arranged between the outer meshing portion of the outer cap and the outer cylindrical wall of the outer cap in the circumferential direction. 11. A cap according to any one of claims 3 , 4 or 10 , characterized in that: The outer meshing portion has a spur gear shape having a plurality of teeth extending outward in the circumferential direction,
12. The method according to any one of claims 3 , 4, 10, or 11 , wherein the inner meshing portion has an internal gear shape having a plurality of teeth extending circumferentially inward from the inner cap. cap. When the inner cap is fitted into the outer cap on the surface of the inner top plate portion and/or on the back surface of the outer top plate portion, a part of the inner cap is attached to the center of the outer cap during assembly. A cap according to any preceding claim, further comprising an assembly stop positioned to prevent contact with the button. a peripheral rib protruding radially outward from the outer surface of the inner wall;
an inner peripheral rib protruding radially inward from the inner surface of the outer wall,
When the inner cap moves downward relative to the outer cap, the outer peripheral rib and the inner peripheral rib come into contact with each other, and the inner cap slides out of the outer cap, causing the inner cap and the outer cap to slide. 14. The cap according to any one of claims 1 to 13 , characterized in that it prevents the separation of the A cap according to any one of the preceding claims, characterized in that the surface of the central button has recesses and/or protrusions. The outer cap further includes a supported portion that contacts a supporting portion provided around the container when the cap is attached to the container, and is provided with an inward and downward circumferential direction applied to the outer cap. 16. The cap according to any one of claims 1 to 15 , characterized in that the force of is prevented from being transmitted to the inner cap. A container with a cap, comprising: the cap according to any one of claims 1 to 16 ; and a container in which the cap is detachably attached to the mouth. The container comprises a support provided around its circumference,
The outer wall of the outer cap contacts the support portion of the container when the cap is attached to the container, and the circumferentially inward and downward forces applied to the outer cap are applied to the inner wall of the container. 18. The container with a cap according to claim 17 , wherein the cap is prevented from being transmitted to the cap.

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