JP6649652B2 - Stopper cap - Google Patents

Description

  The present invention relates to a cap having an inner plug having a plug that can be removed without using a pull ring, and in particular, pulls off the plug from the inner plug at the same time as opening of the cap, and places the removed plug inside the cap. The present invention relates to a stopper cap to be engaged.

  As a food container that stores contents such as dressings and seasonings, the inside of the container is sealed with an inner stopper until opening, and the inner stopper can be removed by rotating the screwing part of the overcap. A cap is conventionally known (for example, see Patent Document 1).

JP 2011-225220 A

However, the stopper cap described in Patent Document 1 described above is required to stir the contents separated into oil and moisture or separated into liquids and solids (sesame and ingredients) before use. When the container was shaken, the contents adhered to the lower surface of the plug attached to the inside of the overcap, and when the overcap was removed, the adhered contents dripped and sometimes soiled the outside of the container.
In addition, when using the contents, if the overcap is laid down sideways, the contents attached to the lower surface of the plug attached to the overcap hangs down and accumulates downward, thereby contaminating the inside of the overcap. In addition, when the lid is closed as it is, there is a problem that the inner plug and the container itself are soiled.

  An object of the present invention is to solve the above-described problem, and in a stopper cap for removing a transfer plug from an inner plug at the same time as opening of a cap, and attaching the removed transfer stopper to the inside of the cap, before use. Even if the contents adhere to the lower surface of the transfer plug by shaking the container to stir the contents, when the cap is opened, the contents adhered to the lower surface of the transfer plug are in the cap and the container. An object of the present invention is to provide a stopper cap which does not hang on the outside of the cap.

The present invention, in order to solve the above-mentioned problems, comprises, as a stopper cap, an inner plug attached to the mouth of the container body and having a pouring cylinder, and a cap that is openably and closably attached to the inner stopper. Has a bottom wall on the inner peripheral surface of the pouring cylinder that closes the opening of the pouring cylinder, and includes a transition plug that is engaged with the cap when the lid is opened and that is removed. On the lower surface, a plurality of peripheral walls are provided vertically, and a drip prevention mechanism is provided in which a recess is defined between adjacent peripheral walls, and the drip prevention mechanisms have the same length toward the lower side of the peripheral wall, and are all equal. In addition , a configuration is adopted in which the central portion is longest and the outer side is shorter .

As an embodiment of the drip prevention mechanism, the drip prevention mechanism has a concentric peripheral wall, a central peripheral wall on the center side, an intermediate peripheral wall outside the peripheral wall, and an outer peripheral wall on the outer edge of the bottom wall. And a central concave portion between the central peripheral wall and the intermediate peripheral wall, and an external concave portion between the intermediate peripheral wall and the outer peripheral wall, and the projected area of the concave portion is set wider from the center to the outer side. A configuration characterized by being performed is adopted.

As an embodiment of the outer concave portion of the liquid dripping prevention mechanism, the outer concave portion of the liquid dripping preventing mechanism is formed such that an inclined surface descending from the intermediate peripheral wall side toward the outer peripheral wall side is formed, or The outer recess of the prevention mechanism has a configuration in which an inclined surface that rises from the intermediate peripheral wall toward the outer peripheral wall is formed.
In addition, as a specific embodiment of the drip prevention mechanism, the drip prevention mechanism adopts a configuration in which a deep recess is formed near a junction between the top surface of the outer recess and the outer peripheral wall.

The stopper cap of the present invention is provided with a dripping prevention mechanism on the lower surface of the transition plug attached to the inside of the cap by removing the transition plug from the inner stopper at the same time as opening the cap. The length of the lower part of the peripheral wall is the same, or the central part is the longest and the outer part is formed shorter toward the outer side . Even if spilled, the excess contents are quickly drained off and the remaining liquid is retained by the dripping prevention mechanism, so that the contents almost drip from the transfer plug after removing the cap In addition, even if the cap is turned sideways, the contents are hardly dripped from the transfer plug, and the inside of the cap and the outside of the container can be prevented from being soiled.

It is a figure which shows the set state immediately after assembling the cap and the inner plug in the 1st Example of a stopper cap, (a) is a front sectional view, (b) is a bottom view. 1A is a cross-sectional view taken along line XX of FIG. 1A, and FIG. 1B is an enlarged view of a main part of FIG. 1A. FIG. 2 is a diagram showing an XX cross-sectional view corresponding to FIG. 1A for explaining a ratcheting operation of the stopper cap of the first embodiment, and FIG. (B) shows the operation when the cap is unscrewed and opened. It is a principal part enlarged view of the modification of a stopper cap. It is explanatory drawing in 2nd Example of a stopper cap, (a) is a principal part enlarged view before plug removal, (b) is a principal part enlarged view after plug removal.

  Next, the stopper cap of the present invention will be described with reference to the drawings showing examples.

1 and 2, A is a container main body, B is an inner plug attached to the container main body A, and C is a cap screwed and attached to the inner stopper B.
In the following description, the upward direction is referred to as “up” and the downward direction is referred to as “down” in FIG.

  As shown in FIG. 1, the mouth 1 of the container body A is provided with a locking ridge 2 which is fitted to the inner plug B and retained and retained.

As shown in FIGS. 1 and 2, the inner plug B includes an outer cylinder 5 on the outer peripheral side, an inner cylinder 6 on the inner peripheral side, and an upper wall 7 located on a top surface side of the mouth 1. A fitting cylindrical portion 4 forming an annular groove to be fitted therein, a screw wall portion 8 erected and connected to the upper wall 7, and a stepped portion 9 provided on the upper end of the screw wall portion 8 via a stepped portion 9. The circumference is composed of a pouring cylinder 10 serving as a pouring port.
Between the outer cylinder 5 and the inner cylinder 6, the mouth 1 of the container main body A is formed so as to be fitted and sandwiched, and the inner periphery of the outer cylinder 5 is engaged with the locking ridge 2 to be prevented from coming off. It has become so.

A transition plug 12 is integrally connected to the inner peripheral surface of the dispensing cylinder 10 via a thinned portion 11 formed over the entire circumference.
The transition plug 12 has a cylindrical tubular wall 13 erected at the upper part, a lower wall 14 at the lower part, and the bottom wall 14 together with the thinned portion 11 closes the spout.
The thinned portion 11 is formed at an angle that rises from the outer peripheral end of the bottom wall 14 toward the inner peripheral lower part of the pouring cylinder 10, and is formed so that the pouring cylinder 10 side is thinner than the bottom wall 14 side. ing.

The cylindrical wall 13 has engaging projections 15 that constitute one of the first tooth portions of the ratchet mechanism protruding at six locations in the circumferential direction on the outer circumference, and a first engaging projection 16 protruding annularly on the upper inner circumference. It is established.
The engagement protrusion 15 is formed on a first engagement surface 17 formed in a substantially radial direction to be engaged with a second tooth portion of the cap C described later, and is screwed from the outer peripheral surface of the cylindrical wall formed on the opposite side in the circumferential direction. And a non-engagement surface 18 inclined in the direction, and has a substantially trapezoidal shape in plan view with the bottom side being the outer peripheral surface side of the cylindrical wall.

A drip prevention mechanism D is formed on the lower surface of the bottom wall 14, and the drip prevention mechanism D is a concentric circular peripheral wall, a central peripheral wall 20 on the center side, an intermediate peripheral wall 21 outside the central peripheral wall 20, and a peripheral wall. The outer peripheral wall 22 of the outer edge of the bottom wall 14 is vertically provided from the lower surface of the bottom wall 14 on the outer side of the peripheral wall 21, so that a central concave portion 23 inside the central peripheral wall 20, the central peripheral wall 20 and the intermediate peripheral wall 21 are formed as concave portions. And an outer concave portion 25 between the intermediate peripheral wall 21 and the outer peripheral wall 22.
The projected area of the top surface of the central concave portion 23, the intermediate concave portion 24, and the outer concave portion 25 is set such that the central concave portion 23 <the intermediate concave portion 24 <the outer concave portion 25.
The length of the central peripheral wall 20, the intermediate peripheral wall 21, and the outer peripheral wall 22 toward the lower side is set so that the central peripheral wall 20> the intermediate peripheral wall 21> the outer peripheral wall 22.

The top surface of the outer concave portion 25 is formed with an inclined surface 25a that descends from the intermediate peripheral wall 21 side toward the outer peripheral wall 22 side, and a deep concave portion 26 is formed near the junction between the inclined surface 25a and the intermediate peripheral wall 21.
Note that the top surface of the outer concave portion 25 may not have the inclined surface 25a, and the deep concave portion 26 may be provided near the joint between the top surface and the outer peripheral wall 22.
Further, the top surfaces of the central concave portion 23 and the intermediate concave portion 24 are formed as horizontal surfaces, but may be formed as inclined surfaces similarly to the top surface of the outer concave portion 25.

  A male screw 30 is formed on the outer peripheral surface of the screw wall portion 8, and a plurality of reinforcing ribs 31 having an upper portion connected to the lower surface of the step portion 9 are protruded from the inner peripheral surface.

  On the upper surface of the upper wall 7, stoppers 32 are provided at a plurality of locations in the circumferential direction.

The cap C includes a top wall 35 provided on the top plate portion, and an outer peripheral wall 36 vertically provided from an outer peripheral edge of the top wall 35.
On the lower surface of the top wall 35, an engagement cylinder portion 38 and a screw cylinder portion 39 are vertically suspended in order from an engagement portion 37 suspended near the center to the outside.

  The engagement portion 37 has an annular second engagement protrusion 40 that goes over the first engagement protrusion 16 of the transition plug 12 of the inner plug B and fits tightly on the inner peripheral surface of the cylindrical wall 13. It is formed on the outer periphery of the tip.

  On the inner periphery of the engagement cylinder portion 38, an engagement arm 41 constituting a second tooth portion engaging with the engagement projection 15 constituting the first tooth portion of the transition plug 12 of the inner plug B is provided. It is provided at six locations in the circumferential direction of the same number as 15, and the outer periphery of the engagement cylinder portion 38 is a seal that abuts against the inner peripheral surface of the ejection tube 10 to seal the spout.

The engaging arm 41 has a substantially radial second engaging surface 43 that engages with the first engaging surface 17 of the engaging projection 15 when the cap C is rotated in the screw releasing direction when the cap is opened. It has a joint portion 42 and an arm portion 44 that is thinner than the distal end engaging portion 42 that extends inclining in the unscrewing direction from the inner peripheral surface of the engaging cylindrical portion 38.
As shown in FIG. 3B, the engagement arms 41 contact the second engagement surfaces 43 of the respective distal engagement portions 42 with the first engagement surfaces 17 of the engagement protrusions 15 when the plug is opened. As shown in FIG. 3 (a), the strength is sufficient to transmit a breakable rotational force to the thin-wall weakened portion 11, and the flexibility is sufficient to be able to get over the engagement protrusion 15 when the cap C is tightened. It is made of a material having properties.

  The screw cylinder portion 39 is provided with a female screw 45 screwed into the male screw 30 of the inner plug B on the inner periphery, and a wedge-shaped concave portion 46 engaging with the stopper 32 is formed at a plurality of circumferential positions on the lower end surface. .

Next, a description will be given of a usage mode and an operation effect of the present embodiment.
First, in order to attach the stopper cap of this embodiment to the container main body A, the cap C is screwed into the inner stopper B and tightened, and the inner stopper B and the cap C are assembled. The fitting tube portion 4 is applied and the stopper is plugged from above.

When the female screw 45 of the cap C is screwed into the male screw 30 of the inner plug B and tightened, the cap C rotates in the direction of arrow R as shown in FIG. The cap C is allowed to rotate when it rides on the mating surface 18 and gets over the engagement protrusion 15.
When the cap C is lowered by screwing, the second engagement projection 40 of the engaging portion 37 comes into contact with the first engagement projection 16 of the cylindrical wall 13, and further descends, The second engagement projection 40 rides over the first engagement projection 16 and fits on the inner peripheral surface of the cylindrical wall 13.
At the same time, the stopper 32 of the upper wall 7 of the inner plug B fits into the wedge-shaped concave portion 46 of the threaded cylindrical portion 39 of the cap C, and the fastening of both screws is completed.

When the fastening of the male screw 30 and the female screw 45 is completed, the ratchet mechanism is in the set state shown in FIG. 2A, that is, the arm portion 44 of the engagement arm 41 on the opposite side to the second engagement surface 43 is engaged. The projection 15 is set so as to be brought into contact with the non-engagement surface 18 of the projection 15 or to be in a state immediately before the contact.
With this setting, the cap C does not easily rotate from the set state (fastened state), and can be prevented from being accidentally opened by a slight impact.
In the set state, the outer peripheral surface of the engagement cylindrical portion 38 of the cap C comes into contact with the inner peripheral surface of the dispensing tube 10 to seal the inside of the dispensing tube 10.

Next, in order to use the container in which the stopper cap of this embodiment is attached by tapping, the cap C is rotated in the unscrew direction (the direction of the arrow L in FIG. 3B).
As described above, when the rotation of the cap C starts, the second engagement surface 43 of the engagement arm 41 comes into contact with the first engagement surface 17 of the engagement protrusion 15 as shown in FIG. The rotational force of the cap C is applied to the transition plug 12 via the ratchet mechanism.

At this time, since the second engagement projection 40 of the engaging portion 37 is tightly fitted to the inner peripheral surface of the cylindrical wall 13 that has passed over the first engagement projection 16, the cylindrical wall 13 is moved inward. And the rotational force of the cap C is easily transmitted to the transition plug 12 via the ratchet mechanism, and generates a force for lifting the transition plug 12 upward with the rotation of the screw.
As the rotation of the cap C progresses, the thinned weakened portion 11 is finally broken by the rotating force and the pulling force applied to the transfer plug 12, the spout is opened, and the transfer plug 12 separated from the pouring tube 10. Is pulled up by the engaging portion 37 engaging with the cylindrical wall 13 and rises together with the cap C.
Since the thinning weakened portion 11 is thinner on the side of the pouring cylinder 10 than on the side of the bottom wall 14, the side of the pouring cylinder 10 is broken. Remains.

  When the outer periphery of the engagement cylinder portion 38 is separated from the inner peripheral surface of the ejection cylinder 10, the female screw 45 is unscrewed from the male screw 30, the cap C is detached from the inner plug B and the lid is opened, and the transition plug 12 together with the cap C is opened. The contents in the container can be poured out from the pouring outlet of the pouring cylinder 10 from which is removed.

When the cap C is mounted on the inner plug B again after using the container, the mounting of the cap C is guided by the broken pieces of the thinned weakened portion 11 remaining on the outer periphery of the bottom wall 14 of the transition plug 12. The contents attached to the inner peripheral surface of the pouring cylinder 10 are scraped off, and the inner peripheral surface of the pouring cylinder 10 can be kept clean.
After scraping off the contents adhered to the inner peripheral surface of the pouring cylinder 10 by the broken pieces of the thinned weakened portion 11, the outer periphery of the engaging cylindrical portion 38 of the cap C slides down and seals. Therefore, the sealing performance is improved.

When the content is a dressing or the like in which ingredients are contained, the stopper cap of the present embodiment shakes the container up and down in a closed state in order to stir the content, and then is transferred to the cap C. The contents adhere to the drip prevention mechanism D on the lower surface of the bottom wall 14 of the plug 12, but a part of the liquid of the contents remaining in the central concave portion 23, the intermediate concave portion 24, and the outer concave portion 25 is removed by the central peripheral wall 20. Then, it flows down the wall surfaces of the intermediate peripheral wall 21 and the outer peripheral wall 22 and falls down, and solids such as ingredients also fall down by their own weight.
Further, the outer concave portion 25 has a larger area than the other concave portions, and the liquid easily adheres to the top surface and easily remains. However, since the top surface is the inclined surface 25a, the adhered liquid flows from the deep concave portion 26 side to the outer peripheral wall 22. It is easy to flow.

Still, the contents remain in the concave portions of the central concave portion 23, the intermediate concave portion 24, and the outer concave portion 25 of the liquid dripping prevention mechanism D, but the contents remaining in the central concave portion 23, the intermediate concave portion 24, and the outer concave portion 25 are removed. Due to the surface tension of the liquid and the capillary action, it does not drip easily.
Therefore, it is desirable that each of the central concave portion 23, the intermediate concave portion 24, and the outer concave portion 25 be large enough to hold the liquid by surface tension or the like. Further, although it depends on the size of the ingredients, a size that does not hold solids such as the ingredients in the concave portions is preferable.

  When the cap C is removed, the cap C may be laid sideways, but the liquid of the contents adhering in the central concave portion 23, the intermediate concave portion 24, and the outer concave portion 25 of the liquid dripping prevention mechanism D. Has been stopped moving due to surface tension and capillary action, and is continuously held inside the central concave portion 23, the intermediate concave portion 24, and the outer concave portion 25. The liquid remaining in the liquid drip prevention mechanism D does not flow out of the outer peripheral wall 22 so that the inside of the cap C is not stained. It does not get dirty.

  Since the lengths of the central peripheral wall 20, the intermediate peripheral wall 21, and the outer peripheral wall 22 of the drip prevention mechanism D toward the lower side are formed such that the central peripheral wall 20> the intermediate peripheral wall 21> the outer peripheral wall 22. Even if the cap C is turned over, the contents are difficult to move over each peripheral wall.

  In the present embodiment, the drip prevention mechanism D is configured such that the central peripheral wall 20, the intermediate peripheral wall 21, and the outer peripheral wall 22 are concentrically provided as the peripheral walls, so that the inner peripheral portion of the central peripheral wall 20 is formed as a concave portion. A concave portion 23, an intermediate concave portion 24 between the central peripheral wall 20 and the intermediate peripheral wall 21, and an outer concave portion 25 between the intermediate peripheral wall 21 and the outer peripheral wall 22 are defined, and the contents are held in the respective concave portions. Then, when the cap C is removed and the cap C is dropped on its side, the dripping prevention mechanism D does not need to hang the cap into the cap. Therefore, the length and the number of the peripheral walls and the number of the recesses defined thereby are three. It is not necessary to limit to each, and it can be appropriately set according to the viscosity of the contents, the type of solid matter, and the like.

In the present embodiment, engaging projections 15 are provided on the outer periphery of the cylindrical wall 13 of the transition plug 12 of the inner plug B at six locations in the circumferential direction, and are engaged with the inner periphery of the engaging cylindrical portion 38 of the cap C. By providing the same number of engagement arms 41 to be engaged with the joint projections 15 and by rotating the transition plug 12 at the time of the first lid opening by a ratchet mechanism by engagement of the engagement projections 15 and the engagement arms 41, The thinned-wall weakened portion 11 is broken, and the transition plug 12 is removed together with the cap C from the pouring tube 10 of the inner stopper B. Then, the thinned portion 11 is broken, and the transition plug 12 can be removed together with the cap C from the pouring tube 10 of the inner plug B. Further, after the first opening, the transition plug 12 is kept engaged with the cap C. It is not a ratchet mechanism as in the above embodiment, It may be.
The mechanism for fitting and rotating the transfer stopper 12 of the inner stopper B and the cap C is not limited to the mechanism of the above embodiment.

Further, in the present embodiment, the inner plug B and the cap C are provided with a male screw or a female screw portion and screwed together. However, the cap at the time of assembly is closed, and the plug for transfer of the inner plug is attached to the cap. It is sufficient that the transfer stopper can be removed together with the cap from the inner stopper by the first lid opening. Therefore, even if it is not screwed, for example, as shown in JP-A-2007-145370, an undercut fitting is performed. The stopper cap may be configured to be removed from the inner stopper by rotating the cap.
Further, it is also possible to adopt a method in which the connection between the inner plug and the transfer plug is disengaged by rotating the screw in the opening direction or the like and the transfer plug is transferred from the inner plug to the cap. . Further, for example, as in Japanese Patent Application Laid-Open No. 2015-221690, the cap may be connected to the inner plug via a hinge and opened and closed.
The method of attaching the cap to the inner plug is not limited to the configuration of the above embodiment.

In the present embodiment, the transition plug 12 of the inner plug B is integrally connected to the inner peripheral surface of the pouring tube 10 via the thinned portion 11 formed over the entire circumference. Before the lid is opened, the inside of the dispensing cylinder is closed, and the lid is opened at the first opening, and it is sufficient that the lid is engaged with the cap C and removed. Alternatively, it may be formed separately, and the transfer stopper may be closed by being undercut-fitted to the dispensing cylinder, and may be further opened.
The structure of the stopper during transition to the inner stopper is not limited to the structure of the above embodiment.

In the first embodiment, the downward length of the central peripheral wall 20, the intermediate peripheral wall 21, and the outer peripheral wall 22 of the liquid dripping prevention mechanism D is such that the central peripheral wall 20> the intermediate peripheral wall 21> the outer peripheral wall 22. Although formed, as a modified embodiment, as shown in FIG. 4, the lengths of the central peripheral wall 20a, the intermediate peripheral wall 21a, and the outer peripheral wall 22a of the drip prevention mechanism Da are all equal to each other. You may do so.
Compared with the configuration of the first embodiment, the amount of liquid that can be held by the surface tension on the peripheral wall side of each of the central concave portion 23, the intermediate concave portion 24, and the outer concave portion 25 changes. Since the amount of liquid retained in the first peripheral wall is small, the operation and effect other than the lengths of the central peripheral wall 20a, the intermediate peripheral wall 21a, and the outer peripheral wall 22a are the same as those of the first embodiment.

Next, a description will be given of a second embodiment in which the drip prevention mechanism on the lower surface of the transfer plug body of the inner plug is changed.
Hereinafter, the same components as those of the first embodiment will be denoted by the same reference numerals, and only different components will be denoted by different reference numerals, and the description will focus on the differences.

As shown in FIG. 5 (a), a drip prevention mechanism Db is provided on the lower surface of the bottom wall 14 of the transition plug 12 of the inner plug B, and the drip prevention mechanism Db is a concentric circle as a peripheral wall and has a central side. Of the central peripheral wall 20, the intermediate peripheral wall 21 outside the central peripheral wall 20, and the outer peripheral wall 22 of the outer edge of the bottom wall 14 outside the intermediate peripheral wall 21, so as to form a concave portion inside the central peripheral wall 20. A central recess 23, an intermediate recess 24 between the central peripheral wall 20 and the intermediate peripheral wall 21, and an outer concave 50 between the intermediate peripheral wall 21 and the outer peripheral wall 22 are defined.
On the top surface of the outer concave portion 50, an inclined surface 50a is formed which rises from the intermediate peripheral wall 21 side toward the outer peripheral wall 22 side. An upper inclined surface 50b that is slightly inclined is formed, and a deep concave portion 51 is formed near a junction between the inclined surface 50a and the upper inclined surface 50b.
Note that the top surface of the outer concave portion 50 may not be formed with the inclined surface 50a, and the deep concave portion 51 may be provided near the joint between the top surface and the outer peripheral wall 22.

Next, the operation and effect of this embodiment will be described.
In the stopper cap drip prevention mechanism Db of the present embodiment, the top surface of the outer concave portion 50 is the inclined surface 50a, so that the attached liquid can easily flow from the deep concave portion 51 to the intermediate peripheral wall 21.

The cap C may be removed and the cap C may be placed sideways as shown in FIG. 5 (b). However, the liquid of the contents attached to the inside of the outer concave portion 50 is retained by surface tension, and In particular, the contents remaining near the deep concave portion 51 are held toward the deep concave portion 51 by the inclination of the upper inclined surface 50 b, so that the attached liquid does not flow outside the outer peripheral wall 22.
The functions and effects of the other configurations are the same as those of the first embodiment.

  With the stopper cap of the present invention, by opening the cap, the transfer stopper of the inner stopper can be removed together with the cap to open the spout, and the container can be shaken up and down to stir the contents. Even after opening the lid and placing the cap on its side, the liquid adhering to the drip prevention mechanism provided on the lower surface of the transfer plug does not drip into the cap, so the outside of the container may be soiled. It can be widely used in containers for foods and drinks and seasonings, and is suitable as a container that can be used with hygiene and security.

Reference Signs List A Container main body B Inner plug C Cap D, Da, Db Liquid dripping prevention mechanism 1 Mouth 2 Locking ridge 4 Fitting cylinder 5 Outer cylinder 6 Inner cylinder 7 Top wall 8 Screw wall 9 Step 10 Discharge cylinder 11 Thinned part 12 Transition plug 13 Cylindrical wall 14 Bottom wall
15 engagement protrusion 16 first engagement protrusion 17 first engagement surface 18 non-engagement surface 20, 20a central peripheral wall 21, 21a intermediate peripheral wall 22, 22a outer peripheral wall 23 central recess 24 intermediate recess 25, 50 outer recess 25a, 50a Inclined surface 26, 51 Deep recess 30 Male screw 31 Reinforcement rib 32 Stopper 35 Top wall 36 Outer peripheral wall 37 Engagement part 38 Engagement cylinder part 39 Screw cylinder part 40 Second engagement protrusion 41 Engagement arm 42 Tip engagement part 43 second engagement surface 44 arm 45 female screw 46 wedge-shaped recess 50b upper inclined surface

Claims (5)

It is attached to the mouth of the container body, and comprises an inner cap having an ejection tube, and a cap which can be opened and closed on the inner stopper,
The inner plug has a bottom wall that closes the opening of the spout cylinder on the inner peripheral surface of the spout cylinder, and includes a transition plug body that is engaged with the cap when the lid is opened and that is removed.
The transition plug body has a liquid dripping prevention mechanism in which a plurality of peripheral walls are vertically provided on the lower surface of the bottom wall, and a concave portion is defined between each adjacent peripheral wall ,
The stopper cap , wherein the drip prevention mechanism has the same length in the downward direction of the peripheral wall, or is formed to be the longest on the central side and shorter toward the outer side . The drip prevention mechanism is configured such that the peripheral wall is concentric, the central peripheral wall on the center side, an intermediate peripheral wall on the outer side thereof, an outer peripheral wall on the outer edge of the bottom wall, the concave portion is a central concave portion inside the central peripheral wall, and the central peripheral wall. And an intermediate recess between the intermediate peripheral wall and an outer concave between the intermediate peripheral wall and the outer peripheral wall,
2. The stopper cap according to claim 1, wherein the projection area of the recess is set wider from the center to the outside. The stopper cap according to claim 2 , wherein the outer concave portion of the drip prevention mechanism is formed with an inclined surface that descends from the intermediate peripheral wall toward the outer peripheral wall . The stopper cap according to claim 2 , wherein the outer concave portion of the drip prevention mechanism is formed with an inclined surface that rises from the intermediate peripheral wall side toward the outer peripheral wall side. 5. The stopper cap according to claim 2, wherein the liquid dripping prevention mechanism has a deep recess formed near a joint between the top surface of the outer recess and the outer peripheral wall . 6.

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