JP2023164026A - Transition plug cap - Google Patents

Abstract

To provide a transition plug cap comprising a cap body having a transition plug body and a screw cap screwed to the cap body, in which the transition plug body can be unsealed even when the screw cap is rotated in any direction.SOLUTION: A transition plug cap comprises a cap body B attached to a mouth 1 of a container body A and a screw cap C removably attached by screwing to the cap body B. The cap body B comprises a spout cylinder 10 and a transition plug body 12 provided continuing to an inner-peripheral face side of the spout cylinder 10 through a thin-walled weakened portion 11 and formed circumferentially with a first fit portion 19, while the screw cap C comprises a top wall 40, a hermetic cylinder portion 43 extending downward from the top wall 40 and sealing the spout cylinder 10 and a second fit portion 51 allowed to mate with the first fit portion 19 of the transition plug body 12. The first fit portion 19 and the second fit portion 51 have a dovetail shape symmetric about a radial direction in plan view. As for the transition plug body 12, the thin-walled weakened portion 11 is to be broken even when the screw cap C is rotated in any direction of opening or closing the lid.SELECTED DRAWING: Figure 1

Description

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

Conventionally, food containers for storing contents such as dressings have been used to keep the inside of the container sealed by a cap body with a transition stopper until the container is opened, and a screw cap is attached by screwing onto the cap body in the opening direction. There is a known transition plug cap that can be opened by rotating the cap body to remove the transition plug from the cap body and hold the transition plug in the engagement part of the screw cap (for example, Patent Document 1 reference).

JP 2022-11921 Publication

However, with the transition stopper cap described in Patent Document 1, the stress applied to the thin weakened portion does not increase by simply rotating the screw cap in the opening direction, and the seal can be opened with reduced opening torque. Conventionally, there was a transition cap that was opened by rotating the screw cap in the closing direction once when opening the package, but we have developed a transition cap that can be opened by rotating the screw cap in the closing direction as before. A cap was required.

The present invention aims to solve the above-mentioned problems, and provides a transition stopper cap including a cap body having a transition stopper body and a screw cap screwed onto the cap body, in which the screw cap can be rotated in any direction. To provide a transition stopper cap that allows the transfer stopper to be opened even when the transfer stopper is opened.

In order to solve the above problems, the present invention provides a transition stopper cap that includes a cap body that is attached to the mouth of a container body, and a screw cap that is screwed onto the cap body and is detachably attached. The main body includes a spouting tube and a transition stopper that is connected to the inner circumferential side of the spouting tube via a thin weakened portion and has a first fitting portion formed in the circumferential direction, and the screw cap includes: A top wall, a sealed envelope part that hangs down from the top wall and seals the pouring tube, and a second fitting part that can fit with the first fitting part of the transition stopper, and the first fitting part and the second fitting part. The second fitting part has a biting shape that is symmetrical in the radial direction in plan view, and the transition plug body is a thin weakened part even when the screw cap is rotated in either the opening or closing direction. Adopts a configuration characterized in that the rupture occurs.

As an embodiment of the transition stopper cap, a configuration is adopted in which the biting shape is a trapezoidal shape with side surfaces expanding toward the inner circumference, and the cap body is shaped like a trapezoid that extends toward the inner periphery. The screw cap includes a mounting part to be mounted, a threaded wall part erected from the mounting part, and a first threaded part threaded onto the outer periphery of the threaded wall part. , a second threaded part is threaded on the inner periphery of the threaded cylinder part and is threadedly engaged with the first threaded part, and the first threaded part and the second threaded part are characterized by having a small thread engagement. In addition, the mounting part is equipped with a stopper rib on the upper surface, the threaded cylinder part is equipped with a stopper part that engages with the stopper rib on the lower end surface, and the stopper rib is made easy to climb over the stopper part. Adopt a characteristic configuration.

By employing the above configuration, the transition plug cap of the present invention can be easily opened even if the screw cap of the transition plug cap is rotated in either the opening or closing direction.
Further, in the transition plug cap of the present invention, since the first fitting part of the transition plug body and the second fitting part of the screw cap have a biting shape that is symmetrical in the radial direction in a plan view, the transition plug cap It is possible to prevent the first fitting part and the second fitting part from coming off (overrun) by biting into each other when the first fitting part and the second fitting part are opened.

It is a figure which shows the state after setting the screw cap and cap main body in the transition stopper cap based on the Example of this invention, (a) is a side sectional view, (b) is a sectional view taken along the line XX of (a). This is a perspective view. It is a figure which shows the cap main body of an Example, (a) is a top view, (b) is a side half sectional view. It is a figure which shows the screw cap of an Example, (a) is a side sectional view, (b) is a bottom view. FIG. 1(a) is an enlarged view of the main part of FIG. 1(a) as a threaded part of a transition stopper cap according to an embodiment of the present invention, where (a) is a view when the lid is screwed and closed, and (b) is a view when the lid is opened. be. It is an enlarged view of Modification 1 in which the configurations of the screw cap and the cap main body in the main part of FIG. 1(b) are changed. It is an enlarged view of the modification 2 which changed the structure of the screw cap and cap main body in the main part of FIG.1(b). It is an enlarged view of the modification 3 which changed the structure of the screw cap and cap main body in the main part of FIG.1(b).

Next, the transition stopper cap of the present invention will be described by giving examples and referring to the drawings.
In addition, in the following description, as seen in FIG. 1(a), the upper direction is referred to as "upper", the lower direction is referred to as "lower", and the left-right direction is referred to 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 and is detachably attached.
The container body A is made of a hard shape-retaining material 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 cap such as PP. It is made of a harder material than the main body B. The materials of the container body A, the cap body B, and the screw cap C can be changed as appropriate.
As shown in FIG. 1, the container main body A is provided with a locking protrusion 2 on the mouth portion 1, which fits the cap main body B to prevent it from coming off.

As shown in FIGS. 1 and 2, the cap body B consists of an outer cylinder 5 on the outer circumference side, an inner cylinder 6 on the inner circumference side, and an upper wall 7 located on the top side of the mouth part 1. A mounting part 4 forming an annular groove into which the mouth part 1 fits, a threaded wall part 8 erected from the mounting part 4, and a top wall 9 extending inward from the upper end of the inner circumference of the threaded wall part 8. and a spouting cylinder 10 erected from the upper surface of the ceiling wall 9.

The spout tube 10 has a spout formed on the inner circumferential side for pouring out the contents stored in the container body A, and has an enlarged upper part that curves outward.
A transition stopper 12 is integrally connected to the inner peripheral side of the lower end of the pouring cylinder 10 via a thin weakened portion 11 formed over the entire circumference.

The transition plug body 12 includes a ring-shaped peripheral edge 13 continuous to the inner periphery of the thin weakened portion 11, a cylindrical wall 14 formed inside the peripheral edge 13, and a lower inner peripheral side of the cylindrical wall 14. and a circular central bottom wall 16 with a columnar protrusion 15 erected in the center.

The peripheral edge part 13 has an annular groove 17 recessed from the lower surface to a predetermined height, a first engaging protrusion 18 constituting a first engaging part is provided around the lower part of the outer periphery, and a first fitting protrusion 18 is provided at the upper part of the outer periphery. Fitting recesses 19, which constitute a joint and are cut out from the outer periphery, are provided at positions of 0° and 180° with respect to the axis.
The fitting recess 19 has a biting shape that is symmetrical with respect to the radial direction in a plan view so that it fits into a second fitting part of a screw cap C to be described later and bites into each other. The fitting recess 19 consists of an inner wall surface 19a formed in an arc shape along the inner wall surface 19a, and an inner surface 19b formed in a straight line from both sides of the inner wall surface 19a and at an angle approaching each other toward the outside. In plan view, the inner surface 19b is formed into a V-shaped isosceles trapezoid shape that expands toward the inner circumference.

Further, on the upper outer periphery of the peripheral portion 13, a hollow portion 20 formed in an arc shape along the cylindrical wall 14 is recessed from the upper surface between the fitting recesses 19.
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 12; The number and structure are not limited as long as it has unevenness in the circumferential direction that fits into the second fitting part of the screw cap C.

The threaded wall portion 8 has a male screw 26 configuring the first threaded portion screwed on its outer peripheral surface, and has a plurality of reinforcing ribs 27 on its inner peripheral surface whose upper part is connected to the ceiling wall 9 and extends in the axial direction. In this embodiment, three locations are provided.
As shown in FIGS. 2 and 4(a), the male thread 26 is not vertically symmetrical in cross section like a normal thread, but has an inclined upper surface 26a with a steeply inclined upper surface and a flat lower surface. It is composed of a flat lower surface 26b 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 with double threads starting at 180° intervals.
Furthermore, as shown in FIG. 4(a), the thread height of the male thread 26 is 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 depending on the height of the threaded wall portion 8, it can be a multi-start thread with three or more threads.

The ceiling wall 9 is provided with a stepped portion 28 recessed toward the outer circumferential side on the peripheral edge thereof, and sound emitting protrusions 29 are provided at two locations on the inner circumferential side of the stepped portion 28 at an interval of 180°.

Stopper ribs 30 are provided on the upper surface of the upper wall 7 at two locations in the circumferential direction.
The height of the stopper rib 30 may be lower than the conventional height in order to make it easier to get over the threaded cylinder part 44 when the screw cap C described later is rotated in the direction of closing the lid. may be deformed.

The outer cylinder 5 is provided on its inner periphery with a locking reduced diameter part 31 that engages with the locking protrusion 2 of the container body A to prevent the opening 1 from coming off, and is cut radially from the outer peripheral surface over the circumferential direction. A notch recess 32 is formed, and a sorting mechanism F is provided below the notch recess 32 to separate the cap main body B from the container main body A and enable separate disposal.
As shown in FIGS. 1 and 2, the sorting mechanism F is provided with a grip part 34 through a slit 33 formed in the axial direction over a predetermined arc range on the lower outer peripheral surface of the outer cylinder 5, and the grip part 34 is It can be separated from the outer cylinder 5 by the thin vertical cutting part 35 and deployed outward, and furthermore, the notch recess 32 can be easily broken, making it easy to remove the cap main body B from the container main body A.

As shown in FIGS. 1 and 3, the screw cap C includes a disk-shaped top wall 40 and an outer circumferential wall 41 hanging from the outer periphery of the top wall 40. On the inner surface of the top wall 40, In order from the inside, a sealed envelope part 43 and a threaded cylinder part 44 are integrally hung down from the top wall 40, and a sound producing member 45 is arranged concentrically at 180 degrees between the sealed envelope part 43 and the threaded cylinder part 44. They are placed in two locations with an interval of .

The sealed envelope part 43 is provided with a seal part 47 on the outer periphery that contacts the inner peripheral surface of the spout tube 10 and seals the spout when the screw cap C is attached to the cap body B, and on the lower end of the inner periphery. A second engagement protrusion 48 that constitutes a second engagement part that fits over the first engagement protrusion 18 of the peripheral edge 13 of the transition plug body 12 is provided around the circumference, and a second engagement protrusion 48 is provided on the upper inner circumference. The fitting convex portions 51 extend radially inward and fit into the fitting recesses 19 of the transition plug body 12, and the fitting convex portions 51 are arranged at two positions in the circumferential direction, the same number as the fitting concave portions 19. It is set in.

The fitting convex portion 51 is formed from the outer wall surface 51a and the outer side surfaces 51b on both sides so as to fit into the fitting recess 19 of the transition stopper 12 from above when the screw cap C is attached to the cap body B. The fitting convex portion 51 is formed in a V-shaped isosceles trapezoid shape with the outer surface 51b expanding inward in plan view.
In this embodiment, the second fitting portion is embodied as a fitting convex portion 51 extending in the radial direction from the inner peripheral surface of the sealed envelope portion 43; However, the number and structure are not limited as long as it is provided on the screw cap C and has an unevenness that fits with the first fitting part of the transition stopper 12, similarly to the first fitting part. For example, the second fitting portion may be provided in a cylindrical portion hanging from the top wall 40 separately from the sealed envelope portion 43, or may be formed inside the sealed envelope portion 43.

The threaded cylinder part 44 has a female thread 55 on its inner periphery that constitutes a second threaded part that is threaded into the male thread 26 of the cap body B, and a wedge-shaped part on its lower end surface that engages with the stopper rib 30 of the upper wall 7. Stopper portions 56 are formed at two locations in the circumferential direction.
As shown in FIGS. 3 and 4(a), the female thread 55 is not vertically symmetrical in cross section like a normal thread, but has a flat top surface 55a with a flat top surface and a steeply sloped bottom surface. It is composed of a sloped lower surface 55b formed and a vertical inner surface 55c formed between the flat upper surface 55a and the sloped lower surface 55b, and the female thread 55 is formed in a shape and number of threads to be screwed into the male thread 26. .

Further, as shown in FIG. 4(a), the thread height β of the female screw 55 is formed as low as 0.45 mm, whereas the thread height was 1 mm in the conventional case.
Furthermore, when the male thread 26 and the female thread 55 are screwed together, the engagement between the tips of the threads was conventionally 0.5 mm, but the engagement γ is set as small as 0.2 mm.

The sound producing member 45 includes a rigid plate-shaped base 57 that is vertically disposed from the lower surface of the top wall 40 between the screw tube portion 44 and the sealed envelope portion 43, and a rigid plate-shaped base 57 that is vertically disposed from the base 57 and is formed to be elastically deformable. It is composed of a rod-shaped vibrating piece 58.
In the sound producing member 45, just before the end of tightening the screw cap C, the tip of the vibrating piece 58 comes into contact with the sound producing protrusion 29 of the cap body B, and the tightening progresses while deforming the vibrating piece 58 in a curved manner, and the tightening is completed. At the same time, the vibrating piece 58 climbs over the sound emitting protrusion 29 and attempts to restore itself, thereby vibrating and generating sound.

Next, the usage mode and effects of this embodiment will be explained.
In the transition stopper cap of this embodiment, the cap body B and the screw cap C are molded separately, and then the screw cap C is plugged and set from the top of the cap body B, and then the screw cap C is attached to the mouth part 1 of the container body A. Apply the attachment part 4 of the cap body B to cap the cap.

When setting the screw cap C on the cap body B, first, fit inside the tight envelope part 43 of the screw cap C from above each fitting recess 19 of the peripheral edge 13 of the transition stopper 12 of the cap body B. The convex portion 51 is aligned and fitted, and the screw cap C is pushed into the cap body B.

When the screw cap C is pushed into the cap body B from this state, the inclined lower surface 55b of the female thread 55 of the threaded tube portion 44 of the screw cap C slides into contact with the inclined upper surface 26a of the male thread 26 of the threaded wall portion 8 of the cap body B. 1 and 4(a), the threaded cylinder portion 44 of the threaded cap C comes to fit into the threaded wall portion 8 of the cap body B, as shown in FIGS. 1 and 4(a).
At this time, since the cap main body B is more easily deformed than the screw cap C, the male thread 26 side is mainly deformed and restored while being fitted together.

As the screw cap C is pushed in further, the second engagement protrusion 48 of the tight envelope portion 43 passes over the first engagement protrusion 18 formed on the peripheral edge 13 of the transition plug body 12 of the cap body B and is fitted. match.
At the same time, the lower part of the threaded cylindrical part 44 of the screw cap C lightly contacts the upper surface of the upper wall 7 of the cap body B, or approaches it with a slight gap, and the stopper part 56 engages with the stopper rib 30, Pushing of the screw cap C is stopped, and setting of the transition plug cap is completed.
After setting, as shown in FIG. 1(b), each of the inner sealing envelope portions 43 of the screw cap C is inserted into each fitting recess 19 of the peripheral edge 13 of the transition stopper 12 of the cap body B. The fitting protrusion 51 is fitted, and the second engagement protrusion 48 of the sealed envelope part 43 and the first engagement protrusion 18 formed on the peripheral edge 13 of the transition plug body 12 of the cap body B are engaged. The transition plug body 12 is fitted inside the screw cap C.

The set transition stopper cap is put into use by applying the attachment part 4 of the cap body B to the mouth part 1 of the container body A filled with the contents.
When capping the container body A, the cap body B can be deformed and restored, and is capped so as not to come off from the container body A while mainly deforming and restoring.
In this way, the transition plug cap of this embodiment can be attached to the cap body B by plugging when the screw cap C is set on the cap body B, so it is different from the conventional transition plug cap. By using the ratchet mechanism, there is no need to rotate the screw cap C to screw them together, and the screw cap C and the cap body B can be set together with a single touch.

Next, in order to use the container equipped with the transition stopper cap of this embodiment, normally, the screw cap C is first rotated in the lid-opening direction relative to the cap body B.
In response to the rotation of the screw cap C, the fitting convex portion 51 of the tight envelope portion 43 rotates, and the fitting concave portion 19 of the transition stopper body 12 of the cap body B that fits with the fitting convex portion 51 also becomes a columnar protrusion. 15, and the transition stopper 12 is rotated relative to the cap body B, so that the thin weakened portion 11 connecting the transition stopper 12 and the lower end of the inner circumference of the spout barrel 10 is broken. go.

When the screw cap C is rotated in the opening direction, the screw cap C is lifted with respect to the cap body B as the female screw 55 of the screw cap C and the male screw 26 of the cap body B are unthreaded.
In addition, at the beginning of the rotation, the tip of the vibrating piece 58 of the sound producing member 45 of the screw cap C comes into contact with the sound producing protrusion 29 of the top wall 9 of the cap body B, and as the rotation progresses, the vibrating piece 58 The vibrating piece 58 advances while being curved and deformed, and the tip of the vibrating piece 58 overcomes the sound emitting protrusion 29, and the vibrating piece 58 that has been curved and deformed returns to its original state and vibrates, producing sound.

As the screw cap C continues to rotate, the thin weakened portion 11 finally breaks due to the rotational force and lifting force applied to the transition stopper 12, and a spout is opened in the spout tube 10. The separated transition stopper 12 is pulled up by the second engagement protrusion 48 of the sealed envelope part 43 that engages with the first engagement protrusion 18 of the peripheral edge 13, and rises together with the screw cap C.
Further, when the female screw 55 is unscrewed from the male screw 26 and the screw cap C is removed from the cap body B, the transition stopper 12 is removed together with the screw cap C.

As described above, when using a container, normally the screw cap C is first rotated in the opening direction with respect to the cap body B, but the transition stopper cap of this embodiment conversely closes. Even if it is rotated in the lid direction, the transition stopper 12 can be removed from the cap body B and the spout can be opened in the spout tube 10, which will be explained below.

First, when the screw cap C is rotated in the lid-closing direction, the height of the stopper rib 30 on the upper surface of the upper wall 7 of the cap main body B, which engages with the stopper portion 56 of the screw cylinder portion 44 of the screw cap C, becomes higher than before. Due to the low level or the deformation of the stopper rib 30 itself, the engaged threaded cylindrical portion 44 is caused to overcome the stopper portion 56, and the threaded cylindrical portion 44 is lifted upward.
Further, as shown in FIG. 4(a), the engagement γ between the flat upper surface 55a of the female thread 55 of the threaded tube 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; Along with the rotation, the male thread 26 of the cap body B deforms and climbs over, and as shown in FIG. is removed.

The threaded cylindrical portion 44 of the screw cap C and the threaded wall portion 8 of the cap body B are unscrewed, and the threaded cylindrical portion 44 is lifted by climbing over the stopper rib 30, so that the screw cap C is attached to the cap body B. It is lifted upwards.

Further, in the transition plug cap of this embodiment, when the screw cap C is set in the cap body B, the fitting recess 19 of the transition plug body 12 and the fitting convex portion 51 of the screw cap C are inward when viewed from above. It is formed in a V-shaped isosceles trapezoid shape (a symmetrical biting shape in the radial direction) that spreads toward the circumference, and a fitting convexity of the screw cap C is formed in the fitting recess 19 of the transition plug body 12 of the cap body B. Since the portions 51 are fitted, the fitting recess 19 and the fitting protrusion 51 bite into each other regardless of whether the screw cap C is rotated in the direction of opening or closing the lid, and the fitting recess 19 and the fitting protrusion 51 bite into each other, and the cap body When rotating the transition plug body 12 with respect to B, it is possible to prevent the fitting recess 19 and the fitting protrusion 51 from coming off.
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 pouring out the contents, the screw cap C is rotated in the direction of closing the lid and screwed onto the cap body B, so that the seal portion 47 of the sealed envelope portion 43 of the screw cap C is attached to the inner periphery of the pouring tube 10. The inside of the container can be sealed by adhering to the container.
When the screw cap C is completely closed, the tip of the vibrating piece 58 of the sound emitting member 45 comes into contact with the sound emitting protrusion 29 again and vibrates, emitting sound, so that the user can feel the sensation. It is possible to know when the screw cap C has been closed.
At the same time, the stopper part 56 of the threaded cylinder part 44 engages with the stopper rib 30 of the upper wall 7, and the rotation of the threaded cap C is stopped, completing the closing of the lid.

When the lid is closed, the outer periphery of the lower end of the transition stopper 12 that is attached to the inside of the screw cap C comes close to the spout opened in the spout tube 10 of the cap body B and blocks the flow of the contents. Even if the container is knocked down, the contents will simply adhere to the lower surface of the transfer stopper 12 and can be easily collected into the container body A, and the contents will be easily collected into the container body A, and the contents will be easily collected from the lower surface of the top wall 40 of the screw cap C and the spout in the spout tube 10. The inside of the spout tube 10 can be kept clean without soiling the upper part or accumulating the contents.

The transition plug cap of the present embodiment allows the transition plug body 12 to be removed from the cap body B regardless of the direction of rotation of the screw cap C in the opening or closing direction. The spout of the spout barrel 10 can be opened.

In the above embodiment, the fitting recess 19 of the peripheral edge 13 of the cap main body B is cut out from the outer periphery and is formed in a V-shaped isosceles trapezoid shape that widens toward the inner periphery in plan view. The fitting convex part 51 of the sealed envelope part 43 of C is formed in a shape to fit into the fitting recess 19, and is fitted when the lid is closed, and when the lid is opened, the screw cap C can be rotated in any direction to screw the screw cap C. It is only necessary to maintain the fitted state by biting the fitting recess 19 and the fitting protrusion 51 into each other so that the transition stopper 12 can be rotated together with the cap C. A modification example in which the shape of the convex portion 51 is changed will be described below.

As a first modification, as shown in FIG. 5, the fitting recess 60 of the peripheral edge 13 of the cap body B has an inner wall surface 60a formed in an arc shape along the outer periphery of the cylindrical wall 14, and an inner wall surface 60a of the inner wall surface 60a. It is composed of an inclined inner surface 60b formed at an angle approaching the outer side from both sides and a linear inner surface 60c extending outward from the outer end of the inclined inner surface 60b, and is formed in a hook shape in which the inner side widens in plan view. The fitting convex part 65 of the tight envelope part 43 of the screw cap C is composed of an outer wall surface 65a, sloped outer surfaces 65b on both sides, and straight outer surfaces 65c so as to fit into the fitting recess 60. The fitting concave portion 60 and the fitting convex portion 65 have a shape that bites into each other even when the screw cap C is rotated in the direction of opening or closing the lid, as in the first embodiment. Therefore, the fitted state can be maintained reliably.
Note that the fitting convex portion 65 is not limited to a key shape, but may be formed in a T-shape, although not shown.

In addition, as a second modification, as shown in FIG. 6, the fitting recess 70 of the peripheral portion 13 of the cap body B has an inner wall surface 70a formed in an arc shape along the outer periphery of the cylindrical wall 14, and an inner wall surface It consists of a dogleg-shaped inner surface 70b that extends outward from both sides of the screw cap 70a and approaches the inside in a dogleg shape. The fitting convex portion 75 of 43 is composed of an outer wall surface 75a and dogleg outer surfaces 75b on both sides, and is formed in a substantially diamond shape in a plan view so as to fit into the fitting recess 70. Even when the screw cap C is rotated in the direction of opening or closing the lid, the fitting protrusions 75 are shaped to bite into each other as in the first embodiment, so that the fitted state can be maintained reliably. I can do it.

Furthermore, as a modification example 3, as shown in FIG. It consists of an arcuate inner side surface 80b that expands outward from both sides of the inner surface 80a and then curves toward the inner side, and is formed into a substantially barrel shape in plan view. 85 consists of an outer wall surface 85a and arcuate outer surfaces 85b on both sides, and is formed in a barrel shape in a plan view so as to fit into the fitting recess 80 and the fitting convex portion 85. Even when the screw caps C are rotated in the direction of opening or closing the lid, the fitted state can be maintained reliably since the screw caps C are shaped to bite into each other as in the first embodiment.

The transition stopper cap of the present invention includes a cap body that is attached to the mouth of a container body and has a removable transition stopper body, and a screw cap that is screwed onto the cap body and is detachably attached. By using a combination of hard and soft materials for the screw cap and the cap body, when the screw cap is rotated in the direction of opening or closing the lid, the first fitting part and the second fitting part will not bite. Since the transition stopper can be easily removed from the cap body by reliably breaking the thin-walled rupture portion, it is suitable as a transfer stopper cap that can be widely used in containers for foods and beverages, seasonings, and the like.

A Container body B Cap body C Screw cap F Sorting mechanism α, β Thread height γ Engagement 1 Mouth part 2 Locking protrusion 4 Mounting part 5 Outer cylinder 6 Inner cylinder 7 Top wall 8 Threaded wall part 9 Top wall 10 Pourout Cylinder 11 Thin weakened portion 12 Transition stopper 13 Peripheral portion 14 Cylindrical wall 15 Columnar projection 16 Central bottom wall 17 Annular groove 18 First engaging projection (first engaging portion)
19, 60, 70, 80 Fitting recess (first fitting part)
19a, 60a, 70a, 80a Inner wall surface 19b Inner surface 20 Lightening part 26 Male thread (first thread part)
26a Inclined upper surface 26b Flat lower surface 26c Outer surface 27 Reinforcement rib 28 Step portion 29 Sound producing projection 30 Stopper rib 31 Locking diameter reducing portion 32 Notch recess 33 Slit 34 Gripping portion 35 Vertical cutting portion 40 Top wall 41 Outer peripheral wall 43 Sealed envelope Part 44 Threaded cylinder part 45 Sound producing member 47 Seal part 48 Second engaging protrusion (second engaging part)
51, 65, 75, 85 Fitting convex part (second fitting part)
51a, 65a, 75a, 85a Outer wall surface 51b Outer surface 55 Female thread (second threaded part)
55a Flat upper surface 55b Slanted lower surface 55c Inner surface 56 Stopper portion 57 Base 58 Vibrating piece 60b Slanted inner surface 60c Straight inner surface 65b Slanted outer surface 65c Straight outer surface 70b Doglegged inner surface 75b Doglegged outer surface 80b Arc inner surface 85b Arc outer surface

Claims (4)

Comprising a cap body that is attached to the mouth of the container body, and a screw cap that is screwed onto the cap body and detachably attached,
The cap body includes a spouting tube and a transition stopper that is connected to the inner circumferential side of the spouting tube via a thin weakened part and in which a first fitting part is formed in the circumferential direction,
The screw cap includes a top wall, a sealed envelope part that hangs down from the top wall and seals the pouring tube, and a second fitting part that can fit with the first fitting part of the transition stopper,
The first fitting part and the second fitting part have a biting shape that is symmetrical in the radial direction in a plan view,
The transition plug body is a transition plug cap characterized in that the thin weakened portion breaks when the screw cap is rotated in either direction, opening or closing. 2. The transition plug cap according to claim 1, wherein the bite shape is a trapezoidal shape with side surfaces expanding toward the inner circumference. The cap body includes a mounting part that is attached to the mouth of the container body, a threaded wall part that stands up from the mounting part, and a first threaded part that is threaded on the outer periphery of the threaded wall part,
The screw cap includes a threaded cylindrical portion hanging from the top wall, and a second threaded portion screwed onto the inner periphery of the threaded cylindrical portion and threadedly engaged with the first threaded portion,
3. The transition stopper cap according to claim 1, wherein the first threaded part and the second threaded part have a small thread engagement. The mounting part is equipped with a stopper rib on the top surface,
The threaded cylinder portion has a stopper portion on the lower end surface that engages with the stopper rib,
4. The transition stopper cap according to claim 3, wherein the stopper rib allows the stopper portion to be easily climbed over.

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