JP7016585B2 - Unplug cap - Google Patents

Description

The present invention relates to a plug-out cap provided with a transition plug that shifts from the inner plug to the overcap, and more particularly to a plug-removal cap that can prevent the transition plug from falling off when the overcap is set on the inner plug.

Conventionally, for food containers that store dressings and seasonings, in order to keep the inside of the container in a sealed state until opening, the inner plug attached to the container mouth is covered with a removal wall defined by a weakened part. A plug-out cap is widely used in which a partition wall is provided and a pull ring provided on the removal wall portion is pulled up to tear off the removal wall portion to open a spout.

However, it requires a relatively large force to pull up the pull ring and break the weakened part, and it may be difficult for children and the elderly with weak fingertips to open it. A cap that can be opened by rotating the screwed portion of the cap has been conventionally known (see, for example, Patent Document 1).

JP-A-2015-163525

The unplugging cap described in Patent Document 1 is only used when the cap is screwed off between the plug body connected to the inner peripheral surface of the dispensing cylinder of the inner plug via the thinning weakening portion and the cutting cylinder portion of the cap. Since the first and second teeth constituting the engaging ratchet mechanism are arranged, the cap can be opened without using a pull ring, and the normal lid opening operation can be performed without any difficult operation. Similarly, the cap can be easily opened by simply rotating the cap in the release direction of the screw.
However, the unplugging cap described in Patent Document 1 is a thinned portion of the plug body when the inner plug is attached to the mouth of the container body filled with the contents and then the overcap is set on the inner plug and tightened. There is a risk that the transition plug may break or the thin-walled weakened portion may break and the transition plug may fall into the container body, and it is difficult to confirm when the transition plug falls into the container body.

The present invention has an object of solving the above-mentioned problem, and is an unplugging cap that can be opened by simply rotating the overcap without using a pull ring. It is an object of the present invention to provide an unplugging cap in which the thin-walled weakened portion does not break and the transition plug does not fall into the container body when the overcap is set and tightened in the inner plug after mounting.

In order to solve the above problems, the present invention can be opened and closed between an inner plug, which is attached to the mouth of the container body as a plug removal cap and has a pouring cylinder that forms a spout to guide the contents. The inner plug is connected to the inner peripheral surface of the spouting cylinder via a thin-walled weakened portion formed over the entire circumference to seal the spout and open the overcap. The thin-walled weakened portion breaks at the time of the lid, and a transition plug that shifts from the inner plug side to the overcap side and a receiving portion provided below the transition plug and at least below the thin-walled weakened portion are provided. A configuration characterized by including a plurality of engaging pieces formed inward from the periphery of the cylinder is adopted.

As an embodiment of the unplugging cap, the receiving portion adopts a configuration characterized in that it is provided at the lower end portion of the dispensing cylinder .

As a further embodiment of the unplugging cap, the inner plug comprises a threaded peripheral wall on the lower perimeter of the dispenser, and the overcap comprises a top wall and an engagement that hangs from the top wall and engages with the transition plug. The transition plug comprises a tubular wall that engages the engagement portion of the overcap, and the tubular wall comprises a first engaging protrusion provided on the inner circumference and a first tooth portion provided on the outer circumference. The engagement portion is provided with a second engagement protrusion that can engage with the first engagement protrusion on the outer periphery, the overcap is arranged on the outside of the engagement portion, and the second tooth portion is on the inner circumference. A sealing cylinder provided and a screw cylinder portion disposed on the outside of the sealing cylinder are provided, and the first tooth portion and the second tooth portion form a ratchet mechanism that engages only when the overcap is screwed off. Adopt a configuration characterized by that.

In the unplugging cap of the present invention, an inner plug is continuously provided on the inner peripheral surface of the dispensing cylinder via a thin-walled weakened portion formed over the entire circumference to seal the spout and to seal the thin-walled cap when the overcap is opened. It is provided with a transition plug in which the weakened portion breaks and shifts from the inner plug side to the overcap side, and a receiving portion provided below the transition plug and at least below the thin-walled weakened portion. By providing a plurality of engaging pieces formed inward from the inside, when the inner plug is attached to the mouth of the container body filled with the contents, and then the overcap is set on the inner plug and tightened. It is possible to prevent the thin-walled weakened portion from breaking and the transition plug from falling into the container body.

Further, the receiving portion can be integrally molded with the inner plug by providing a plurality of engaging pieces formed inward from the periphery of the dispensing cylinder.

It is a figure which shows the set state of the overcap and the inner plug in the unplugging cap of an Example, (a) is a cross-sectional side view, (b) is a sectional view taken by arrow in XX line of (a). It is a figure which shows the inner plug of the unplugging cap of an Example, (a) is a top view, (b) is a side view. It is a figure which shows the inner plug of the unplugging cap of an Example, (a) is the sectional side view, (b) is the enlarged view of the main part of (a), (c) is the bottom view of (b). It is an arrow view on the YY line of FIG. 3A. It is a figure which shows the overcap of the unplugging cap of an Example, (a) is a sectional side view, (b) is a bottom view. 1A is an enlarged view of a main part, FIG. 1A is an enlarged view when the engaging piece is bent, and FIG. 1B is a bottom view of FIG. 1A. 1 (b) is an enlarged view of a main part, (a) is an enlarged view before the end of closing rotation with the overcap in the inner plug, and (b) is an enlarged view at the end of setting the overcap in the inner plug. .. It is a figure which shows the relationship between the sound-producing member of a cap, and the sound-producing protrusion of an inner plug, (a) is a figure before the end of the closing rotation corresponding to FIG. , (C) is a diagram when the lid opening rotation progresses. It is sectional drawing side view when the overcap was opened from the inner plug in the unplugging cap of an Example.

Next, the unplugging cap of the present invention will be described with reference to the drawings showing examples.
In this embodiment, a type of unplugging cap that is set by screwing an overcap into the inner cap is exemplified, but any unplugging cap provided with a transition cap that shifts from the inner plug side to the overcap side at the time of opening. For example, a push-on / twist-off type unplugging cap may be used.

In FIG. 1, A is a container main body, B is an inner plug attached to the mouth of the container main body A, and C is an overcap attached to the inner plug B so as to be openable and closable.
As shown in FIG. 1, the mouth portion 1 of the container body A is provided with a locking ridge 2 that is fitted to the inner plug B to prevent it from coming off.

As shown in FIGS. 2 to 4, the inner plug B includes an outer cylinder 5 on the outer peripheral side, an inner cylinder 6 on the inner peripheral side, and a ring-shaped upper wall 7 located on the top surface side of the mouth portion 1 of the container body A. A fitting cylinder portion 4 forming an annular groove into which the mouth portion 1 is fitted, a thread peripheral wall 8 erected on the inner edge of the upper wall 7, and a continuous thread peripheral wall 8 from the upper end to the inward side. It is composed of a ring-shaped top wall 9 and a pouring cylinder portion 10 erected on the inner edge of the top wall 9.

The dispensing cylinder portion 10 has a cylindrical dispensing cylinder 11 having a lip portion whose diameter is expanded at the top and curved outward, and a thin-walled weakening portion 12 formed on the inner peripheral surface of the dispensing cylinder 11 over the entire circumference. It is provided with a transition plug 13 which is integrally connected to each other via the above.
A cylindrical wall 14 is erected on the upper part of the transition plug 13, and the bottom wall 15 of the transition plug 13 closes the spout together with the thin-walled weakened portion 12.

In the tubular wall 14, the engaging protrusions 16 constituting one of the first tooth portions of the ratchet mechanism are projected at six points in the circumferential direction on the outer periphery, and the first engaging protrusions 17 project in an annular shape on the upper part of the inner peripheral circumference. It is set up.
The engaging protrusion 16 has a first engaging surface 16a formed in the substantially radial direction that engages with the second tooth portion of the overcap C, which will be described later, and a non-engaging surface forming an inclined surface on the opposite side in the circumferential direction. It has 16b, and its plan view shape is a substantially trapezoidal shape with the outer peripheral surface side of the tubular wall 14 as the base.
Further, in the present embodiment, the engaging protrusions 16 are provided at six locations in the circumferential direction, but the engagement projections 16 are not limited to the six locations but can be provided at a plurality of appropriate locations according to the shape of the transition plug and the like, and are not necessarily trapezoidal. It does not have to be, and may be a right-angled triangle.

As shown in FIG. 3, a narrow plate-shaped engaging piece 18 extending diagonally downward from the periphery is provided at the lower end of the dispensing cylinder 11 as a receiving portion.
In this embodiment, the engaging piece 18 is provided at the lower end of the dispensing cylinder 11, but the engaging piece 18 is below the dispensing cylinder 11 at least below the thinning weakening portion 12. It may be provided on the inner wall 19.
Further, two engaging pieces 18 are provided at opposite positions of the lower end of the dispensing cylinder 11, but if there are a plurality of engaging pieces 18, any number of engaging pieces 18 may be provided as long as they do not interfere with the pouring of the contents. do not have.

On the outer peripheral surface of the thread peripheral wall 8, a male screw 20 screwed with the female screw 55 of the overcap C, which will be described later, is provided.
The male screw 20 is formed of a three-threaded screw whose upper end portion starts at an interval of 120 °.
On the inner peripheral surface of the screw peripheral wall 8, a plurality of reinforcing ribs 21 having an upper portion connected to the top wall 9 and extending in the axial direction are provided.

On the upper surface of the top wall 9, a step portion 22 that rises on the inner peripheral side is provided, and on the outer periphery of the step portion 22, sound output protrusions 23 are arranged at three positions at 120 ° intervals.
Stoppers 24 are arranged at three predetermined positions in the circumferential direction on the upper surface of the upper wall 7 of the fitting cylinder portion 4, and a first contact surface 24a rising substantially vertically is formed in the screwing direction thereof. , The first inclined surface 24b is formed in the screwing direction.

The outer cylinder 5 is provided with a notch recess 25 in the radial direction from the outer peripheral surface in the circumferential direction, and the lower portion is a sorting mechanism D that separates the inner plug B from the container body A so that it can be sorted and discarded. Further, on the lower inner circumference of the sorting mechanism D, a locking reduced diameter portion 26 that engages with the locking ridge 2 of the container body A to prevent the mouth portion 1 from coming off is provided.
An outer peripheral knurled portion 27 having a groove cut in the vertical direction is provided on the notch recess 25 on the outer periphery of the outer cylinder 5.

As shown in FIG. 4, the sorting mechanism D is provided with a grip portion 29 via a through slit 28 formed in the axial direction over a predetermined arc range on the lower outer peripheral surface of the outer cylinder 5, and the grip portion 29 is thin. It is separated from the outer cylinder 5 by the vertical cutting portion 30 and can be expanded outward.
A hooking portion 31 for inserting and hooking a fingertip is formed to the right of the vertical cutting portion 30 of the gripping portion 29, and a gripping uneven portion 32 to be gripped by a finger is provided on the inner peripheral surface of the gripping portion 29 in a wavy shape. There is.
In this embodiment, the through slit 28 is formed over an arc range of about 110 °.

The notched recess 25 of the outer cylinder 5 extends from the end portion 34a corresponding to the end portion 28b of the through slit 28 toward the back surface, and extends from the start end portion 28a to the front end portion 34b on the inner peripheral side of the outer cylinder 5. A thick-walled thick-walled connecting portion 35 is formed in which a fractureable thin-walled circumferential cutting portion 34 and a thick-walled thick-walled connecting portion 35 having a large portion between the end portion 34b and the terminal portion 28b of the circumferential cutting portion 34 facing the grip portion 29 are formed. ing.

As shown in FIG. 5, the overcap C has a top wall 40 and an outer peripheral wall 41 suspended from the outer peripheral edge of the top wall 40.
On the lower surface of the top wall 40, a sealing cylinder 43, a midfoot portion 44, and a screw cylinder portion 45 are vertically laid from the central engagement portion 42 to the outside concentrically, and the midfoot portion 44 and the screw cylinder portion are laid down. Sound producing members 46 are arranged at three locations concentrically at 120 ° intervals with the 45.
In this embodiment, the overcap C has an outer peripheral wall 41, but since the screw cylinder portion 45 is vertically hung from the top wall 40, the outer peripheral wall 41 may not be provided.

An annular second engaging protrusion 50 is formed on the outer periphery of the tip of the engaging portion 42 so as to overcome the first engaging protrusion 17 of the inner plug B and tightly fit to the inner peripheral surface of the tubular wall 14. ing.
When the lid is closed, the outer circumference of the sealing cylinder 43 abuts on the inner peripheral surface of the pouring cylinder 11 to seal the spout, and the inner circumference engages with the engaging protrusion 16 constituting the first tooth portion. The engaging arms 51 constituting the second tooth portion are provided at six positions in the circumferential direction in the same number as the engaging protrusions 16.

The engaging arm 51 has a tip having a substantially radial second engaging surface 52 that engages with the first engaging surface 16a of the engaging projection 16 when the overcap C is rotated in the screw release direction at the time of opening. It includes an engaging portion 53 and an arm portion 54 that is thinner and deformable than the tip engaging portion 53 that extends inclined in the screw-off direction from the inner peripheral surface of the sealing cylinder 43.

The screw cylinder portion 45 is provided with a female screw 55 screwed to the male screw 20 of the inner plug B on the inner circumference, and wedge-shaped recesses 56 engaging with the stopper 24 are formed at three points in the circumferential direction on the lower end surface. ..
A second contact surface 56a substantially perpendicular to the screwing direction is formed in the wedge-shaped recess 56, and a second inclined surface 56b is formed in the screwing direction. It has a shape corresponding to the first inclined surface 24b.
The stopper 24 and the wedge-shaped recess 56 are provided at three locations in the circumferential direction in this embodiment, but the stopper 24 and the wedge-shaped recess 56 are not limited to these and can be provided at an appropriate plurality of locations.

The sound producing member 46 is hung from a rigid rod-shaped base 57 suspended from the lower surface of the top wall 40 and from the lower end surface of the base 57, and is formed into a thin wall having an elastically deformable thickness in the circumferential direction. It consists of 58 pieces.
Immediately before the end of tightening of the overcap C, the tip of the vibrating piece 58 of the sound emitting member 46 comes into contact with the sound emitting protrusion 23 of the inner plug B, and the tightening proceeds while the vibrating piece 58 is curved and deformed, and the tightening is completed. At the same time, the vibrating piece 58 is set to vibrate and generate sound by overcoming the sound output protrusion 23 and trying to restore it.
In the present embodiment, the base portion 57 is arranged in three places at 120 ° intervals concentrically, but the base portion 57 may be continuous in a ring shape.

The midfoot portion 44 has a tubular shape and is provided so as to come to the outside of the dispensing cylinder 11 when the lid is closed. Further, the length of the midfoot portion 44 is preferably larger than the height of the screw peripheral wall 8 of the inner plug B.
When the overcap C is screwed into the inner plug B, the dispensing cylinder 11 is guided by the midfoot portion 44 to facilitate the alignment, and unless the alignment is successful, the female screw 55 of the screw cylinder portion 45 is used. Since it does not reach the male screw 20 of the screw peripheral wall 8, it cannot be screwed, and it is possible to prevent unreasonable screwing.

Next, the usage mode and the action and effect of this example will be described.
First, in order to attach the unplugging cap of this embodiment to the container body A, the inner plug B is tapped into the mouth 1 of the container body A filled with the contents, and then the overcap C is set in the inner plug B. However, when the overcap C is set in the inner plug B, the thin-walled weakened portion 12 of the transition plug 13 is broken, or the thin-walled weakened portion 12 is broken and the transition plug 13 is a container. There is a risk of falling into the main body A.
Therefore, in order to prevent the thinning weakening portion 12 from breaking or the transition plug 13 from falling into the container body A, two engaging pieces are placed below the inner plug B as shown in FIG. 18 is molded so as to extend diagonally downward toward the inside.

Therefore, before the inner plug B is plugged into the mouth portion 1 of the container body A, it is necessary to bend each engaging piece 18 toward the transition plug 13 side as shown in FIG. 6, and the engaging piece 18 needs to be bent. For bending, for example, a jig or the like having a heating means may be used to keep the engaging piece 18 in a bent state.
Although the engaging piece 18 has the same wall thickness, the base end portion 18a may have a thin wall or the like.
Next, in order to plug the inner plug B into the container body A filled with the contents, the fitting cylinder portion 4 of the inner plug B is applied to the mouth portion 1, and the upper wall 7 is pressed from above to form the mouth portion. 1 fits into the fitting cylinder portion 4, and the outer cylinder 5 is slightly expanded outward, so that the locking reduced diameter portion 26 can engage with the locking ridge 2 of the mouth portion 1.

Next, in order to screw the overcap C into the inner plug B, since the relatively long midfoot portion 44 is provided inside the sound output member 46, the vibrating piece 58 of the sound output member 46 is a pouring cylinder. In addition to blocking entry into 11, the midfoot portion 44 guides the dispenser cylinder 11, facilitating the alignment of the overcap C, and the transition plug 13 of the inner plug B and the engagement portion 42 of the overcap C. And it is necessary that the engagement with the sealing cylinder 43 is surely performed.
When the alignment is determined and the female screw 55 of the screw cylinder portion 45 of the overcap C is screwed into the male screw 20 of the screw peripheral wall 8 of the inner plug B and tightened, the overcap C rotates and the overcap C The engaging arm 51 of the sealing cylinder 43 rides on the non-engaging surface 16b of the engaging protrusion 16 of the transition plug 13 of the inner plug B, gets over the engaging protrusion 16, and allows the overcap C to rotate.
At this time, since the transition plug 13 is supported by the engaging piece 18 (receiving portion) around the thin-walled weakening portion 12, even if a downward force acts on the transition plug 13, the thin-walled weakening portion 12 is supported. It is possible to prevent accidental breakage.

Further, as the overcap C is lowered, the second engaging protrusion 50 of the engaging portion 42 of the overcap C gets over the first engaging protrusion 17 of the transition plug 13 of the inner plug B, and the tubular wall 14 It comes to fit on the inner peripheral surface of.
At the same time, the wedge-shaped recess 56 at the bottom of the screw cylinder portion 45 comes to fit into the stopper 24 of the upper wall 7 of the inner plug B, and further, as the male screw 20 and the female screw 55 are fastened, the wedge-shaped recess 56 is further advanced. The second contact surface 56a of 56 abuts on the first contact surface 24a of the stopper 24, and the fastening of both screws is completed.

Before the fastening of both screws is completed, as shown in FIGS. 7 (a) and 8 (a), the vibration pieces 58 of the respective sound producing members 46 of the overcap C are caused by the rotation and lowering of the overcap C. When the tip abuts on each sound output protrusion 23 of the top wall 9 of the inner plug B and the rotation progresses further, as shown in FIG. 8B, the vibrating piece 58 advances while being curved and deformed, and finally. , As shown in FIGS. 1 (b) and 7 (b), the tip of the vibrating piece 58 gets over the sound output protrusion 23.
When the tip of the vibrating piece 58 gets over the sound emitting protrusion 23, the curved and deformed vibrating piece 58 tries to be restored, vibrates, and a sound is emitted.
From this sound, the user of the present invention can intuitively know the end of closing the cap.

Next, in order to use the container to which the unplugging cap of this embodiment is attached, the overcap C is rotated with respect to the inner plug B in the screwing direction.
As the rotation progresses, as shown in FIG. 8C, the tip of the vibrating piece 58 of the sound emitting member 46 of the overcap C comes into contact with the sound emitting protrusion 23 of the top wall 9 of the inner plug B, and further rotation occurs. As the vibration piece 58 advances, the vibration piece 58 advances while being curved and deformed, the tip of the vibration piece 58 gets over the sound output protrusion 23, and the curved and deformed vibration piece 58 is restored and vibrates, and a sound is emitted.

Further rotation, the engaging arm 51 extending from the inner peripheral surface of the sealing cylinder 43 of the overcap C rotates, and the second engaging surface 52 of the tip engaging portion 53 engages with the transition plug 13 of the inner plug B. It comes into contact with the first engaging surface 16a of the joint projection 16, and the rotational force of the overcap C is applied to the transition plug 13 via the ratchet mechanism.
Since the tip engaging portion 53 of the engaging arm 51 is formed to be thicker than the arm portion 54, the second engaging surface 52 firmly abuts and engages with the first engaging surface 16a over a wide area and rotates. Has strength that is not defeated by force.

At this time, since the second engaging protrusion 50 of the engaging portion 42 is tightly fitted to the inner peripheral surface of the tubular wall 14, the tubular wall 14 is reinforced from the inside and the rotational force of the overcap C is applied. Is easily transmitted to the transition plug 13 via the ratchet mechanism, and a force is generated to pull the transition plug 13 upward as the screw rotates.
As the rotation of the overcap C progresses, the thinning weakening portion 12 finally breaks due to the rotational force and the pulling force applied to the transition plug 13, and the spout is opened in the pouring cylinder 11 from the pouring cylinder portion 10. The separated transition plug 13 is pulled up by the engagement portion 42 engaged with the tubular wall 14 and rises together with the overcap C.

Further, when the female screw 55 is screwed out from the male screw 20 and the overcap C is separated from the inner plug B as shown in FIG. 9, the opening of the dispensing cylinder portion 10 from which the transition plug 13 is removed together with the overcap C. The contents in the container can be poured out from.

When the overcap C is screwed into the inner plug B again after the contents are poured out, it is easy to align the overcap C with respect to the inner plug B by the midfoot portion 44, and the screwing is completed. The outer circumference of the sealing cylinder 43 of the overcap C is in close contact with the inner circumference of the dispensing cylinder 11 to seal the inside of the container.

Further, when the fastening of both screws is completed, the tip of the vibrating piece 58 of the sound producing member 46 abuts on the sound producing protrusion 23 and vibrates again, so that the user of the present invention emits a sound. , It is possible to intuitively know the end of closing the overcap C.
Since the user of the present invention can intuitively know the end of closing the overcap C, the overcap C is forcibly rotated with respect to the inner plug B, the screwing becomes too strong, and the overcap C is opened. It is possible to prevent the lid from being troubled.

In this embodiment, the sound output member 46 of the overcap C and the sound output protrusion 23 of the top wall 9 of the inner plug B are provided so as to generate a sound when the lid is opened or closed. May be omitted.
Further, the midfoot portion 44 of the overcap C can also be omitted.

When disposing of the used container, the unplugging cap of this embodiment can be separated and disposed of by separating the inner plug B from the container main body A by a simple operation.
First, when the grip portion 29 is pulled toward the hook portion 31 near the vertical cut portion 30 shown in FIGS. 2 and 4, the vertical cut portion 30 is broken and the grip portion 29 expands outward.
When the gripping portion 29 is further pulled while gripping the gripping uneven portion 32 with a finger, the break progresses from the terminal portion 28b of the through slit 28 to the end portion 34a of the circumferential cutting portion 34.

When the circumferential cutting portion 34 breaks to the end portion 34b, the breaking of the circumferential cutting portion 34 stops. Therefore, when the grip portion 29 is pulled up, the engagement of the locking reduced diameter portion 26 with the locking ridge 2 is released within the range where the circumferential cutting portion 34 is broken, and the mouth of the locking reduced diameter portion 26 is released. Since the restraint on the portion 1 is released, the inner plug B can be separated from the container body A via the thick-walled connecting portion 35 remaining without breaking as the grip portion 29 is pulled up, and can be separated and discarded.

In this embodiment, the male screw 20 and the female screw 55 are set as three-threaded screws in order to reduce the rotation angle for the overcap C to be screwed. However, if the range of rotation is not a concern, the three-threaded screw Instead, it may be a single screw or a screw having a plurality of threads.

In the unplugging cap of the present invention, by providing a receiving portion below the thin-walled weakened portion of the dispensing cylinder portion, when the overcap is set on the inner plug, the thin-walled weakened portion is broken or the transition plug is inside the container body. Since it can be prevented from falling into the container, it is suitable as a container that can be safely used by children and the elderly.

A Container body B Inner plug C Overcap D Sorting mechanism 1 Mouth part 2 Locking protrusion 4 Fitting cylinder part 5 Outer cylinder 6 Inner cylinder 7 Upper wall 8 Thread peripheral wall 9 Top wall 10 Injection cylinder part 11 Injection cylinder 12 Thin-walled weakened part 13 Transition plug 14 Cylindrical wall 15 Bottom wall 16 Engagement protrusion (first tooth part)
16a 1st engaging surface 16b Non-engaging surface 17 1st engaging protrusion 18 Engaging piece (receiving part)
18a Base end 19 Inner wall 20 Male screw 21 Reinforcing rib 22 Step 23 Sound output protrusion 24 Stopper 24a First contact surface 24b First inclined surface 25 Notched recess 26 Locking diameter 27 Outer knurled 28 Through slit 28a Starting end 28b Ending part 29 Gripping part 30 Vertical cutting part 31 Hooking part 32 Gripping uneven part 34 Circumferential cutting part 34a, 34b End part 35 Thick wall connecting part 40 Top wall 41 Outer wall 42 Envelope 43 Sealing cylinder 44 Midfoot Part 45 Screw tube part 46 Sound output member 50 Second engaging protrusion 51 Engaging arm (second tooth part)
52 Second engaging surface 53 Tip engaging portion 54 Arm 55 Female screw 56 Wedge-shaped recess 56a Second contact surface 56b Second inclined surface 57 Base 58 Vibration piece

Claims (3)

It consists of an inner plug that is attached to the mouth of the container body and has a spout tube that forms a spout to guide the contents, and an overcap that can be opened and closed on the inner plug.
The inner plug is continuously provided on the inner peripheral surface of the pouring cylinder via a thin-walled weakened portion formed over the entire circumference to seal the spout, and the thin-walled weakened portion breaks when the overcap is opened. It is provided with a transition plug that shifts from the plug side to the overcap side, and a receiving portion that is provided below the transition plug and at least below the thin-walled weakened portion .
The receiving portion is a plug removal cap characterized by having a plurality of engaging pieces formed inward from the periphery of the dispensing cylinder . The unplugging cap according to claim 1, wherein the receiving portion is provided at the lower end portion of the dispensing cylinder . The inner plug has a threaded peripheral wall on the lower outer circumference of the dispensing cylinder.
The overcap comprises a top wall and an engagement that hangs from the top wall and engages with the transition plug.
The transition plug has a cylindrical wall that engages with the overcap engagement.
The tubular wall includes a first engaging protrusion provided on the inner circumference and a first tooth portion provided on the outer periphery.
The engaging portion is provided with a second engaging protrusion that can be engaged with the first engaging protrusion on the outer periphery thereof.
The overcap is provided with a sealing cylinder which is arranged on the outside of the engagement portion and has a second tooth portion on the inner circumference, and a screw cylinder portion which is further arranged on the outside of the sealing cylinder.
The unplugging cap according to claim 1 or 2, wherein the first tooth portion and the second tooth portion constitute a ratchet mechanism that engages only when the overcap is screwed off .

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