JP7722802B2 - Transfer valve cap - Google Patents

Description

The present invention relates to a transition stopper cap that includes a cap body having a transition stopper body, and in particular to a transition stopper cap that can be opened by rotating the screw cap in either the opening or closing direction.

Transfer stopper caps have been known as food containers for storing contents such as dressings. The cap body has a transfer stopper that seals the container body until it is opened. The screw cap is attached by threading onto the cap body, and by rotating it in the opening direction, the transfer stopper can be removed from the cap body, and the transfer stopper can be held in the screw cap's engaging portion for opening (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2022-11921

However, the transfer stop cap described in Patent Document 1 can be opened with a reduced opening torque by simply rotating the screw cap in the opening direction without increasing the stress on the thin-walled weakened portion. However, there have been transfer stop caps in the past that require the screw cap to be rotated once in the closing direction to open, so there has been a demand for a transfer stop cap that can be opened by rotating the screw cap in the closing direction, as in the past.

The present invention aims to solve the above problems by providing a transition stopper cap that includes a cap body having a transition stopper body and a screw cap that screws onto the cap body, and that allows the transition stopper body to be opened by rotating the screw cap in either direction.

In order to solve the above-mentioned problems, the present invention provides a transition stop cap comprising a cap body that is attached to the mouth of a container body, and a screw cap that is threaded onto the cap body for easy attachment and detachment. The cap body comprises a dispensing tube and a transition stop body that is connected to the inner surface of the dispensing tube via a thin-walled weakened portion and has a first fitting portion formed circumferentially. The screw cap comprises a top wall, a sealing tube portion that hangs down from the top wall and seals the dispensing tube, and a second fitting portion that can fit with the first fitting portion of the transition stop body. The first fitting portion and the second fitting portion have a radially symmetrical bite shape in a plan view, and the transition stop body employs a configuration in which the thin-walled weakened portion breaks when the screw cap is rotated in either the opening or closing direction.

In one embodiment of the transfer stop cap, the bite shape is a trapezoidal shape with sides that widen inward. The cap body includes an attachment portion that attaches to the mouth of the container body, a threaded wall portion that extends from the attachment portion, and a first threaded portion that is threaded onto the outer periphery of the threaded wall portion. The screw cap includes a threaded cylindrical portion that hangs down from the top wall and a second threaded portion that is threaded onto the inner periphery of the threaded cylindrical portion and engages with the first threaded portion. The first and second threaded portions have reduced thread engagement. The attachment portion includes a stopper rib on its upper surface, and the threaded cylindrical portion includes a stopper portion on its lower end that engages with the stopper rib, with the stopper rib designed to easily ride over the stopper portion.

By adopting the above-described configuration, the transfer plug cap of the present invention can be easily opened by rotating the screw cap of the transfer plug cap in either the opening or closing direction.
In addition, the transition stopper cap of the present invention has a first fitting portion of the transition stopper body and a second fitting portion of the screw cap that have a radially symmetrical fitting shape when viewed in a plane, so that they fit into each other when the transition stopper body is opened, preventing the first fitting portion and the second fitting portion from coming off (overrun).

1A and 1B are diagrams showing the state after the screw cap and the cap body have been set in a transfer plug cap according to an embodiment of the present invention, where (a) is a side cross-sectional view, and (b) is a cross-sectional view taken along the line X-X in (a). 1A and 1B are diagrams showing a cap body of an embodiment, in which FIG. 1A is a top view and FIG. 1B is a side half-sectional view. 1A and 1B are diagrams showing a screw cap according to an embodiment, in which FIG. 1A is a side cross-sectional view and FIG. 1B is a bottom view. 1A is an enlarged view of a main part of a screw-on portion of a transfer plug cap according to an embodiment of the present invention, in which FIG. 1A is a view of the screw-on closed state, and FIG. 1B is a view of the open state. 1B is an enlarged view of a first modified example in which the configuration of the screw cap and the cap body is changed. FIG. FIG. 2 is an enlarged view of a second modified example in which the configuration of the screw cap and the cap body in the main part of FIG. FIG. 2 is an enlarged view of a third modified example in which the configuration of the screw cap and the cap body in the main part of FIG. 1( b ) is changed.

Next, the transfer plug cap of the present invention will be described with reference to the drawings by way of examples.
In the following description, the upward direction in FIG. 1A is referred to as "upper", the downward direction as "lower", and the left-right direction as "radial direction".

In FIG. 1, A is a container body, B is a cap body attached to the container body A, and C is a screw cap that is screwed onto the cap body B so as to be detachable.
The container body A is made of a hard material with shape retention such as a bottle or PET, the cap body B is made of a material softer than the screw cap C such as PE, and the screw cap C is made of a material harder than the cap body B such as PP. The materials of the container body A, cap body B, and screw cap C can be changed as appropriate.
As shown in FIG. 1, a container body A has a mouth 1 provided with a locking ridge 2 for fitting a cap body B therein and holding it in place.

As shown in Figures 1 and 2, the cap body B is composed of an outer tube 5 on the outer periphery, an inner tube 6 on the inner periphery, and an upper wall 7 located on the top surface side of the mouth portion 1. It is also composed of an attachment portion 4 that forms an annular groove into which the mouth portion 1 of the container body A fits, a threaded wall portion 8 that extends upright from the attachment portion 4, a top wall 9 that extends inward from the upper end of the inner periphery of the threaded wall portion 8, and a dispensing tube 10 that extends upright from the upper surface of the top wall 9.

The dispensing tube 10 has a dispensing outlet formed on the inner periphery for dispensing the contents stored in the container body A, and the upper part is enlarged in diameter and curved outward.
A transfer stopper body 12 is integrally connected to the inner peripheral side of the lower end of the dispensing tube 10 via a thin-walled weakened portion 11 formed around the entire circumference.

The transition plug 12 comprises a ring-shaped peripheral edge 13 connected to the inner periphery of the thin-walled weakened section 11, a cylindrical wall 14 formed inside the peripheral edge 13, and a circular central bottom wall 16 that seals off the inner periphery of the lower end of the cylindrical wall 14 and has a columnar protrusion 15 erected in the center.

The peripheral portion 13 has an annular groove 17 recessed from the underside to a predetermined height, a first engagement protrusion 18 constituting the first engagement portion provided around the lower outer periphery, and an engagement recess 19 cut out from the outer periphery and constituting the first engagement portion provided around the upper outer periphery at positions 0° and 180° relative to the axis.
The mating recess 19 is fitted with the second mating portion of the screw cap C described later, and has a radially symmetrical fitting shape in a planar view so that they fit together. It consists of an inner wall surface 19a formed in an arc shape along the outer periphery of the cylindrical wall 14, and inner side surfaces 19b formed in straight lines from both sides of the inner wall surface 19a and at an angle so that they approach each other toward the outside. In a planar view, the mating recess 19 is formed in the shape of an isosceles trapezoid with the inner side surfaces 19b widening toward the inner periphery.

Furthermore, on the upper outer periphery of the peripheral edge portion 13 , between the mating recesses 19 , there are recessed portions 20 formed in an arc shape along the cylindrical wall 14 from the top surface.
In this embodiment, the first fitting portion is embodied as a fitting recess 19 formed on the outer periphery of the cylindrical wall 14 of the transition plug body 12, but the number and structure of the first fitting portion are not important as long as it has protrusions and recesses in the circumferential direction of the transition plug body 12 that fit with the second fitting portion of the screw cap C.

The threaded wall portion 8 has a male thread 26 that constitutes the first threaded portion screwed onto its outer surface, and a plurality of reinforcing ribs 27 (three in this embodiment) that are connected to the top wall 9 at their upper portions and extend in the axial direction are arranged on its inner surface.
As shown in Figures 2 and 4(a) , the male thread 26 is not symmetrical in cross section from top to bottom like a normal screw thread, but is composed of an inclined upper surface 26a formed with a steeply inclined upper surface, a flat lower surface 26b formed with a flat lower surface, and a vertical outer surface 26c formed between the inclined upper surface 26a and the flat lower surface 26b, and the upper end is formed as a double thread starting at 180° intervals.
Furthermore, as shown in FIG. 4(a), the thread height α of the male thread 26 is formed to be as low as 0.6 mm, whereas the thread height is 1 mm in the conventional case.
In this embodiment, the male thread 26 is a double-start thread, but it can be a multiple-start thread with three or more starts depending on the height of the threaded wall portion 8.

The top wall 9 has a stepped portion 28 recessed toward the outer periphery on its peripheral edge, and sound-emitting protrusions 29 are arranged in two locations 180° apart on the inner periphery of the stepped portion 28.

Stopper ribs 30 are provided on the upper surface of the upper wall 7 at two positions in the circumferential direction.
The stopper rib 30 may be made lower than the conventional height to make it easier to climb over the screw tube portion 44 when the screw cap C described below is rotated in the closing direction, or the stopper rib 30 itself may be made to deform.

The outer tube 5 has a retaining reduced diameter portion 31 on its inner circumference that engages with the retaining protrusion 2 of the container body A to prevent the mouth portion 1 from coming loose, and has a notched recess 32 recessed radially from the outer surface around the circumference, and a separation mechanism F is provided below the notched recess 32 to separate the cap body B from the container body A so that it can be disposed of separately.
As shown in Figures 1 and 2, the separation mechanism F has a gripping portion 34 provided via a slit 33 formed in the axial direction over a predetermined arc range on the lower outer peripheral surface of the outer tube 5, and the gripping portion 34 is separated from the outer tube 5 by a thin-walled vertical cut portion 35 so that it can be deployed outward.Furthermore, the notched recess 32 can be easily broken, making it easy to remove the cap body B from the container body A.

As shown in Figures 1 and 3, the screw cap C comprises a disk-shaped top wall 40 and an outer peripheral wall 41 extending vertically from the outer edge of the top wall 40. From the inside, a sealing cylinder portion 43 and a threaded cylinder portion 44 are attached to the inner surface of the top wall 40 and extend vertically from the top wall 40. Furthermore, sound-producing members 45 are arranged at two locations 180° apart on a concentric circle between the sealing cylinder portion 43 and the threaded cylinder portion 44.

The sealing tube portion 43 has a seal portion 47 on its outer periphery that abuts against the inner circumferential surface of the dispensing tube 10 to seal the spout when the screw cap C is attached to the cap body B. At the lower end of the inner periphery, a second engaging protrusion 48 is provided, forming a second engaging portion that fits over the first engaging protrusion 18 on the peripheral edge 13 of the transition stopper 12. The upper inner periphery has mating protrusions 51 that extend radially inward and form a second mating portion that fits into mating recesses 19 on the transition stopper 12. The mating protrusions 51 are provided at two circumferential locations, the same number as the mating recesses 19.

The mating protrusion 51 consists of an outer wall surface 51a and outer surfaces 51b on both sides so that when the screw cap C is attached to the cap body B, it fits from above into the mating recess 19 of the transition stopper body 12, and the mating protrusion 51 is formed in an isosceles trapezoidal shape with the outer surfaces 51b widening inward in a V-shape when viewed in a plane.
In this embodiment, the second fitting portion is embodied as a fitting protrusion 51 extending radially from the inner peripheral surface of the sealing cylindrical portion 43, but the second fitting portion is not limited to the sealing cylindrical portion 43 and may be provided on the screw cap C, and similar to the first fitting portion, the number and structure are not limited as long as the second fitting portion has a protrusion or recess that fits with the first fitting portion of the transition plug 12. For example, the second fitting portion may be provided on a cylindrical portion that hangs down from the top wall 40 separately from the sealing cylindrical portion 43, or may be formed inside the sealing cylindrical portion 43.

The threaded cylindrical portion 44 has a female thread 55 threaded on its inner circumference, which constitutes a second threaded portion that screws onto the male thread 26 of the cap body B, and wedge-shaped stopper portions 56 that engage with the stopper rib 30 of the upper wall 7 are formed at two locations around the circumference on the lower end surface.
As shown in Figures 3 and 4(a) , the female thread 55 is not symmetrical in cross section from top to bottom like a normal screw thread, but is composed of a flat upper surface 55a that is formed flat on the top surface, an inclined lower surface 55b that is formed with a steep incline on the bottom surface, and a vertical inner surface 55c that is formed between the flat upper surface 55a and the inclined lower surface 55b, and the female thread 55 is formed with a shape and number of threads that can be threaded onto the male thread 26.

Also, as shown in FIG. 4(a), the thread height β of the female thread 55 is formed to be as low as 0.45 mm, whereas the thread height of the conventional thread is 1 mm.
Furthermore, when the male thread 26 and the female thread 55 are screwed together, the engagement between the tips of the threads is set to a small value of 0.2 mm, whereas in the past it was 0.5 mm.

The sound-producing member 45 is composed of a rigid plate-like base 57 that hangs down from the underside of the top wall 40 between the threaded tube portion 44 and the sealed tube portion 43, and a rod-like vibrating piece 58 that hangs down from the base 57 and is formed to be elastically deformable.
The sound-producing member 45 is set so that just before the screw cap C is completely tightened, the tip of the vibrating arm 58 comes into contact with the sound-producing protrusion 29 of the cap body B, the tightening proceeds while bending and deforming the vibrating arm 58, and at the same time as the tightening is completed, the vibrating arm 58 overcomes the sound-producing protrusion 29 and tries to restore its original shape, thereby vibrating and generating sound.

Next, the manner of use and the effects of this embodiment will be described.
In this embodiment, the transfer stopper cap is formed by molding the cap body B and the screw cap C separately, and then the screw cap C is screwed onto the top of the cap body B and set in place, and then the attachment portion 4 of the cap body B is placed against the mouth portion 1 of the container body A and screwed on.

When setting the screw cap C on the cap body B, first align and insert the mating protrusions 51 inside the sealing tube portion 43 of the screw cap C from above the respective mating recesses 19 on the peripheral edge 13 of the transition stopper 12 of the cap body B, and then push the screw cap C into the cap body B.

When the screw cap C is pushed into the cap body B from this state, the female thread 55 of the screw tube portion 44 of the screw cap C climbs over the male thread 26 while the inclined lower surface 55b slides against the inclined upper surface 26a of the male thread 26 of the threaded wall portion 8 of the cap body B, and the screw tube portion 44 of the screw cap C comes to fit into the threaded wall portion 8 of the cap body B, as shown in Figures 1 and 4(a).
At this time, since the cap body B is more easily deformed than the screw cap C, the male thread 26 side mainly deforms and restores its original shape as the cap is fitted.

As the screw cap C is further pushed in, the second engaging projection 48 of the sealing cylinder portion 43 moves over the first engaging projection 18 formed on the peripheral portion 13 of the transition stopper body 12 of the cap body B and fits into it.
At the same time, the lower part of the screw tube portion 44 of the screw cap C lightly abuts the upper surface of the upper wall 7 of the cap body B or comes close to it with a small gap formed, and the stopper portion 56 engages with the stopper rib 30, preventing the screw cap C from being pushed in, and the setting of the transfer stopper cap is completed.
Furthermore, after setting, as shown in Figure 1 (b), the respective mating protrusions 51 on the inside of the sealing cylinder portion 43 of the screw cap C fit into the respective mating recesses 19 on the peripheral portion 13 of the transition stopper body 12 of the cap body B, and further, the second engagement protrusion 48 on the sealing cylinder portion 43 fits into the first engagement protrusion 18 formed on the peripheral portion 13 of the transition stopper body 12 of the cap body B, and the transition stopper body 12 is engaged inside the screw cap C.

The transfer plug cap thus set is then capped by placing the attachment portion 4 of the cap body B on the mouth portion 1 of the container body A filled with the contents, and is then ready for use.
When the cap body B is attached to the container body A, the cap body B can be deformed and restored, and is attached to the container body A mainly by deforming and restoring itself so as not to come off.
In this way, when setting the screw cap C to the cap body B, the transfer stopper cap of this embodiment can be attached to the cap body B by tapping, so there is no need to use a ratchet mechanism as with conventional transfer stopper caps to rotate and screw the screw cap C, and the setting of the screw cap C and the cap body B can be completed with a single touch.

Next, when using a container equipped with the transfer plug cap of this embodiment, the screw cap C is usually first rotated relative to the cap body B in the opening direction.
As the screw cap C rotates, the mating protrusion 51 of the sealing tube portion 43 rotates, and the mating recess 19 of the transition stopper body 12 of the cap body B, which engages with the mating protrusion 51, also rotates around the columnar protrusion 15, causing the transition stopper body 12 to rotate relative to the cap body B, and the thin-walled weakened portion 11 connecting the transition stopper body 12 to the lower end of the inner circumference of the dispensing tube 10 is broken.

When the screw cap C is rotated in the opening direction, the female thread 55 of the screw cap C and the male thread 26 of the cap body B are unscrewed, and the screw cap C is lifted up relative to the cap body B.
Also, at the beginning of the rotation, the tip of the vibrating arm 58 of the sound-emitting member 45 of the screw cap C abuts against the sound-emitting protrusion 29 on the top wall 9 of the cap body B, and as the rotation progresses, the vibrating arm 58 moves while bending and deforming, the tip of the vibrating arm 58 overcomes the sound-emitting protrusion 29, the bent and deformed vibrating arm 58 returns to its original shape and vibrates, emitting sound.

As the screw cap C continues to rotate, the rotational force and pulling force applied to the transition stopper body 12 eventually cause the thin-walled weakened portion 11 to break, opening an outlet inside the dispensing tube 10, and the transition stopper body 12, separated from the dispensing tube 10, is pulled up by the second engaging protrusion 48 of the sealing tube portion 43, which engages with the first engaging protrusion 18 of the peripheral portion 13, and rises together with the screw cap C.
Furthermore, when the female thread 55 is unscrewed from the male thread 26 and the screw cap C is separated from the cap body B, the transfer stopper 12 is removed together with the screw cap C.

As described above, when using the container, the screw cap C is usually first rotated in the opening direction relative to the cap body B. However, with the transfer stopper cap of this embodiment, the transfer stopper body 12 can be removed from the cap body B and the spout can be opened inside the spouting tube 10 even if the screw cap C is rotated in the closing direction, as will be explained below.

First, when the screw cap C is rotated in the closing direction, the height of the stopper rib 30 on the upper surface of the upper wall 7 of the cap body B, which is engaged with the stopper portion 56 of the screw tube portion 44 of the screw cap C, is lower than before, or the stopper rib 30 itself is deformed, causing it to climb over the stopper portion 56 of the engaged screw tube portion 44 and lift the screw tube portion 44 upward.
Furthermore, as shown in Figure 4(a), the engagement γ between the flat upper surface 55a of the female thread 55 of the threaded cylindrical portion 44 of the screw cap C and the flat lower surface 26b of the male thread 26 of the threaded wall portion 8 of the cap body B is small, and as the cap body B rotates, the male thread 26 of the cap body B deforms and overcomes the engagement, and as shown in Figure 4(b), the inner surface 55c of the female thread 55 abuts against the outer surface 26c of the male thread 26, and the male thread 26 and the female thread 55 are unscrewed.

The threaded cylindrical portion 44 of the screw cap C is unscrewed from the threaded wall portion 8 of the cap body B, and the threaded cylindrical portion 44 is lifted up by climbing over the stopper rib 30, thereby lifting the screw cap C upward relative to the cap body B.

Furthermore, in the transition stopper cap of this embodiment, when the screw cap C is set on the cap body B, the mating recess 19 of the transition stopper body 12 and the mating protrusion 51 of the screw cap C are formed in a V-shaped isosceles trapezoid shape (a radially symmetrical fitting shape) with the sides widening inward in a planar view, and the mating protrusion 51 of the screw cap C is fitted into the mating recess 19 of the transition stopper body 12 of the cap body B. Therefore, regardless of whether the screw cap C is rotated in the opening or closing direction, the mating recess 19 and the mating protrusion 51 will fit into each other, preventing the mating recess 19 and the mating protrusion 51 from coming loose when the transition stopper body 12 is rotated relative to the cap body B.
Furthermore, by removing the lifted screw cap C upward, the transfer stopper 12 can be removed together with the screw cap C, and the opened container can be used.

After the contents are poured out, the screw cap C is rotated in the closing direction and screwed onto the cap body B, so that the seal portion 47 of the sealing tube portion 43 of the screw cap C adheres tightly to the inner circumference of the pouring tube 10, sealing the inside of the container.
When the screw cap C is completely closed, the tip of the vibrating piece 58 of the sound-making member 45 again comes into contact with the sound-making protrusion 29 and vibrates, emitting a sound, so that the user can intuitively know that the screw cap C is completely closed.
At the same time, the stopper rib 30 on the upper wall 7 engages with the stopper portion 56 of the screw cylinder portion 44, stopping the rotation of the screw cap C and completing the closure.

When the lid is closed, the outer periphery of the lower end of the transfer stopper body 12, which is attached to the inside of the screw cap C, is close to the opening in the dispensing tube 10 of the cap body B and blocks the flow of the contents. Therefore, even if the container is turned over, the contents simply adhere to the underside of the transfer stopper body 12 and can be easily collected into the container body A. This prevents the underside of the top wall 40 of the screw cap C and the area above the opening in the dispensing tube 10 from becoming soiled or the contents from accumulating, keeping the inside of the dispensing tube 10 clean.

The transition stopper cap of this embodiment allows the transition stopper body 12 to be removed from the cap body B and the spout outlet of the spout tube 10 of the cap body B to be opened regardless of whether the screw cap C is rotated in the opening or closing direction.

In the above embodiment, the mating recess 19 on the peripheral edge 13 of the cap body B is cut out from the outer periphery and formed into an isosceles trapezoidal shape that widens inward in a plan view, and the mating protrusion 51 on the sealing tube portion 43 of the screw cap C is formed in a shape that fits into the mating recess 19. The mating recess 19 and the mating protrusion 51 are engaged with each other so that they can be rotated in either direction when the lid is closed, and the transfer stopper 12 can be rotated along with the screw cap C when the lid is opened. Therefore, modifications in which the shapes of the mating recess 19 and the mating protrusion 51 are changed are described below.

As a first modification, as shown in FIG. 5, the fitting recess 60 of the peripheral portion 13 of the cap body B is composed of an inner wall surface 60a formed in an arc shape along the outer periphery of the cylindrical wall 14, inclined inner side surfaces 60b formed at an angle approaching the outside from both sides of the inner wall surface 60a, and a straight inner side surface 60c extending outward from the outer end of the inclined inner side surface 60b, and is formed in a hook shape that widens inward in plan view. The fitting protrusion 65 of the sealing cylindrical portion 43 of the screw cap C is composed of an outer wall surface 65a, inclined outer side surfaces 65b on both sides, and a straight outer side surface 65c, and is formed in a hook shape that widens inward in plan view so as to fit into the fitting recess 60. As in the first embodiment, the fitting recess 60 and the fitting protrusion 65 are shaped to fit into each other even when the screw cap C is rotated in the opening or closing direction, so that the fitted state can be reliably maintained.
The fitting protrusion 65 is not limited to a hook shape, and may be formed in a T-shape, although not shown.

In addition, as a second variation, as shown in FIG. 6, the fitting recess 70 of the peripheral portion 13 of the cap body B is composed of an inner wall surface 70a that is formed in an arc shape along the outer periphery of the cylindrical wall 14, and inner side surfaces 70b that extend outward from both sides of the inner wall surface 70a and then form a dogleg shape approaching the inside, forming a roughly diamond shape in plan view. The fitting protrusion 75 of the sealing cylindrical portion 43 of the screw cap C is composed of an outer wall surface 75a and dogleg outer side surfaces 75b on both sides so as to fit into the fitting recess 70, and is also roughly diamond shaped in plan view. As with Example 1, the fitting recess 70 and the fitting protrusion 75 are shaped to fit into each other even when the screw cap C is rotated in the opening or closing direction, so that the fitting state can be reliably maintained.

Furthermore, as a third variation, as shown in FIG. 7, the fitting recess 80 of the peripheral portion 13 of the cap body B is composed of an inner wall surface 80a that is arcuately formed along the outer periphery of the cylindrical wall 14, and arcuate inner side surfaces 80b that widen outward from both sides of the inner wall surface 80a and then curve inward, forming a roughly barrel-shaped surface in plan view. The fitting protrusion 85 of the sealing cylindrical portion 43 of the screw cap C is composed of an outer wall surface 85a and arcuate outer side surfaces 85b on both sides, and is barrel-shaped in plan view so as to fit into the fitting recess 80. As with the first embodiment, the fitting recess 80 and the fitting protrusion 85 are shaped to fit into each other even when the screw cap C is rotated in the opening or closing direction, so that the fitted state can be reliably maintained.

The transfer stopper cap of the present invention is fitted to the mouth of a container body and comprises a cap body with a removable transfer stopper body, and a screw cap that threads onto the cap body for easy attachment and detachment. By combining hard and soft materials for the screw cap and cap body, when the screw cap is rotated in the opening or closing direction, the first and second mating portions easily engage with each other, reliably breaking the thin-walled breaking portion and allowing the transfer stopper to be removed from the cap body. This makes the transfer stopper cap suitable for a wide range of containers for food, beverages, seasonings, etc.

A Container body B Cap body C Screw cap F Separation mechanism α, β Thread height γ Engagement 1 Mouth portion 2 Locking protrusion 4 Mounting portion 5 Outer cylinder 6 Inner cylinder 7 Upper wall 8 Thread wall portion 9 Top wall 10 Dispensing cylinder 11 Thin-walled weakened portion 12 Transfer stopper body 13 Peripheral edge portion 14 Cylindrical wall 15 Columnar protrusion 16 Central bottom wall 17 Annular groove 18 First engaging protrusion (first engaging portion)
19, 60, 70, 80 Fitting recess (first fitting portion)
19a, 60a, 70a, 80a Inner wall surface 19b Inner surface 20 Lightening portion 26 Male thread (first thread portion)
26a Inclined upper surface 26b Flat lower surface 26c Outer surface 27 Reinforcing rib 28 Step portion 29 Sound-producing protrusion 30 Stopper rib 31 Engaging reduced diameter portion 32 Notched recess 33 Slit 34 Grip portion 35 Vertical cut portion 40 Top wall 41 Outer peripheral wall 43 Sealing cylinder portion 44 Threaded cylinder portion 45 Sound-producing member 47 Sealing portion 48 Second engaging protrusion (second engaging portion)
51, 65, 75, 85: Fitting protrusion (second fitting portion)
51a, 65a, 75a, 85a Outer wall surface 51b Outer surface 55 Female thread (second threaded portion)
55a Flat upper surface 55b Inclined lower surface 55c Inner surface 56 Stopper portion 57 Base portion 58 Vibration arm 60b Inclined inner surface 60c Straight inner surface 65b Inclined outer surface 65c Straight outer surface 70b Dog-shaped inner surface 75b Dog-shaped outer surface 80b Circular inner surface 85b Circular outer surface

Claims (4)

The container has a cap body that is attached to the opening of the container body, and a screw cap that is screwed onto the cap body so as to be detachable,
The cap body includes a pouring tube and a transition stopper body that is connected to the inner peripheral surface of the pouring tube via a thin-walled weakened portion and has a first fitting portion formed in the circumferential direction;
The screw cap includes a top wall, a sealing tube portion that hangs down from the top wall and seals the pouring tube, and a second fitting portion that can be fitted with the first fitting portion of the transition stopper body,
the first fitting portion and the second fitting portion have a bite shape that is symmetrical with respect to the radial direction in a plan view,
The transfer stopper cap is characterized in that the thin-walled weakened portion of the transfer stopper body breaks when the screw cap is rotated in either the opening or closing direction. The transfer plug cap described in claim 1, characterized in that the bite shape is a trapezoidal shape with sides that widen inward. The cap body includes an attachment portion that is attached to the opening of the container body, a threaded wall portion that stands upright from the attachment portion, and a first thread portion that is screwed onto the outer periphery of the threaded wall portion;
The screw cap includes a threaded cylindrical portion that hangs down from the top wall, and a second threaded portion that is threaded on the inner periphery of the threaded cylindrical portion and that threadably engages with the first threaded portion;
3. The transfer plug cap according to claim 1, wherein the first and second threaded portions have reduced thread engagement. The mounting part has a stopper rib on the top surface,
the threaded cylindrical portion has a stopper portion on a lower end surface thereof that engages with the stopper rib;
4. The transfer plug cap according to claim 3, wherein the stopper rib is designed to easily climb over the stopper portion.