JP7297557B2 - pouring cap - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pouring cap that includes an inner plug attached to the mouth of a container body and a screw cap that is screwed onto the inner plug, and in particular, the screw cap can be rotated in the lid opening direction. The present invention relates to a pouring cap that allows the unsealed state to be confirmed at a glance.

As a food container for storing contents such as dressing, the inside of the container body is sealed by an inner plug having a transition plug until it is opened, and the screw cap attached by screwing to the inner plug is rotated in the lid opening direction. By doing so, the transition plug can be unplugged from the inner plug, and the unplugged transition plug can be held in the engaging portion of the screw cap for unsealing. By providing a sealing band connected by a weakened connecting portion of the sealing band, and providing a reduced diameter stepped portion that can be engaged with a cutout stepped portion formed on the outer peripheral surface of the inner plug on the inner peripheral surface of the sealing band, A pouring cap that allows visual confirmation of the state of opening has been conventionally known (see, for example, Patent Literature 1).

JP 2015-163525 A

However, the spout cap described in Patent Document 1 removes the transfer plug body from the inner plug by rotating the screw cap in the lid opening direction, and the diameter-reduced stepped portion of the sealing band is cut into the notch of the inner plug. The stepped portion is engaged to prevent further upward movement, the weakened connection is broken, and the sealing band is separated from the screw cap. When the screw cap is screwed and closed, the sealing band and the screw cap are close to each other, so there is a problem that it is difficult to tell at a glance whether the package is unopened.

An object of the present invention is to solve the above-mentioned problems, and a pouring cap comprising an inner plug attached to the mouth of a container body and a screw cap detachably attached by being screwed to the inner plug, To provide a pouring cap capable of visually confirming an unsealed state by an unsealing confirming part of an inner plug only by rotating the screw cap in the opening direction.

In order to solve the above problems, the present invention includes, as a pouring cap, an inner plug attached to the mouth of a container body, and a screw cap detachably attached by screwing to the inner plug. The plug has an unsealing confirmation part provided on the outer periphery and a top wall formed with a spout for the contents. and a sealing band connected via a weakened connecting portion, and the sealing band has a ring portion vertically provided with an unsealing display portion that is visible from the unsealing confirmation portion of the inner plug when the screw cap is opened. The unsealing confirming portion is formed as a diameter-enlarged cylindrical portion having an opening provided on the side surface of the inner plug, and the unsealing indicating portion extends in the circumferential direction from the lower end of the ring portion of the sealing band and expands when the lid is opened. It has a display plate that is visible from the opening of the diameter cylindrical portion, and the display plate is provided on the rear end side in the lid opening direction, the connection portion connected to the lower end of the ring portion, and the front end side in the lid opening direction. A configuration is adopted in which the enlarged diameter cylindrical portion has a locking portion that engages with the claw portion of the display plate .

As an embodiment of the pouring cap, the diameter-enlarged cylindrical portion has a stepped wall portion formed with an arc-shaped slit and an outer peripheral cylindrical portion vertically provided from the outer edge of the stepped wall portion. A configuration is adopted in which the cap is inserted into the slit of the stepped wall portion when the cap is set.

As a specific embodiment of the pouring cap, the claw part adopts a configuration characterized in that it can be visually recognized from the opening part of the expanded diameter cylindrical part before the lid is opened, and the unsealing confirmation part is provided at two locations. has an opening, the unsealing display part adopts a configuration characterized by having two display plates, and the inner plug has an outer cylinder attached to the mouth of the container body, The diameter-enlarged tubular portion has a step wall portion extending radially from the outer peripheral surface of the outer cylinder, and an outer peripheral tubular portion vertically extending from the outer edge of the step wall portion in parallel with the outer cylinder. It has a ring part with a tamper indication part hanging down at the lower end, and the inner plug has a separation mechanism that can be separated from the container body and separated and discarded in the outer cylinder and the expanded diameter cylinder part, and the separation mechanism is a slit. A vertical cut portion formed on the outer cylindrical portion facing one end side, a radial cut portion adjacent to the other end side of the slit and formed to be breakable on the outer circumferential surface of the outer cylinder, and a radial cut portion A notch recess and a notch radially notched from the outer peripheral surface of the outer cylinder in accordance with the height of the upper surface of the radially cut portion over a predetermined arc range in the direction opposite to the other end side of the slit from the part. The recess has a thin circumferentially cut portion that is rupturable on the inner peripheral side of the outer cylinder, and the ring portion of the sealing band has a rupturable ring weakened portion near the radial cut portion. The inner plug is connected to the pouring tube erected from the pouring port on the top wall and the inner peripheral surface of the pouring tube through a thin weakened portion, and is attached to the screw cap when the lid is opened. A configuration characterized by having a transition plug body that is engaged and unplugged is adopted.

By adopting the above structure, the pouring cap of the present invention can be closed by screwing the screw cap again after opening the pouring cap simply by rotating the screw cap in the lid opening direction. However, the unsealed state can be visually recognized at a glance by the unsealing confirmation portion of the inner plug.
Further, in the pouring cap of the present invention, the pawl portion extending in the circumferential direction from the display plate of the unsealing display portion toward the lid opening direction extends from the opening formed in the diameter-enlarging cylindrical portion in the shape of an arrow. By exposing , the opening direction can be clearly indicated to anyone who opens the package.
In addition, since the pouring cap of the present invention has a sorting mechanism in the inner plug, the inner plug can be easily separated from the container body after use and sorted for disposal.

It is a figure which shows the state after setting the screw cap and inner plug in Example 1 of a pouring cap, (a) is front partial sectional drawing, (b) is a principal part enlarged view of (a). It is a figure which shows the inner plug in Example 1 of a pouring cap, (a) is a top view, (b) is a front fragmentary sectional view. It is a figure which shows the screw cap in Example 1 of a pouring cap, (a) is a front fragmentary sectional view, (b) is a bottom view. Fig. 2 is a front partial cross-sectional view showing a state immediately before the inner plug and the screw cap are set in Example 1 of the pouring cap; FIG. 4 is a view showing the pouring cap of Example 1 in a state immediately before the lid is opened, where (a) is a cross-sectional view taken along line X1-X1 in (b), and (b) is a front view. FIG. 4 is a diagram showing the state of the pouring cap in Example 1 at the start of lid opening, where (a) is a cross-sectional view taken along line X2-X2 in (b), and (b) is a front view. Fig. 10 is a front view showing a state after opening the pouring cap in Example 1; FIG. 10 is a view showing the state after the screw cap and the inner plug are set in Example 2 of the pouring cap, (a) is a cross-sectional view taken along line Y1-Y1 in (b), and (b) is a front view. be. It is a figure which shows the inner plug in Example 2 of a pouring cap, (a) is a top view, (b) is a front partial sectional view. It is a figure which shows the screw cap in Example 2 of a pouring cap, (a) is front partial sectional drawing, (b) is a bottom view. FIG. 10A is a cross-sectional view taken along line Y2-Y2 of FIG. 1B, and FIG. 1B is a front view. FIG. 12 is a view showing the state after the screw cap and the inner plug are set in Example 3 of the pouring cap, (a) is a front view, and (b) is a cross-sectional view taken along line Z1-Z1 in (a). be. It is a figure which shows the set state of the screw cap and inner plug in Example 3 of a pouring cap, (a) is a front view, (b) is a bottom view. It is a figure which shows the inner plug in Example 3 of a pouring cap, (a) is front partial sectional drawing, (b) is a bottom view. It is a figure which shows the inner plug in Example 3 of a pouring cap, (a) is a side surface partial sectional view, (b) is a bottom view. It is a figure which shows the screw cap in Example 3 of a pouring cap, (a) is a front fragmentary sectional view, (b) is a bottom view. FIG. 11 is a view showing the state of the pouring cap when the lid is opened in Example 3, where (a) is a front view and (b) is a cross-sectional view taken along line Z2-Z2 of (a). FIG. 17B is a cross-sectional view corresponding to FIG. 17B for explaining the operation of the sorting mechanism in Example 3 of the pouring cap, and FIG. is expanded outward, and (b) shows a state in which the outer peripheral cylindrical portion is further pulled to break the radially cut portion, and the circumferentially cut portion starts to break.

Next, as a pouring cap of the present invention, an example of a pouring cap provided with an inner plug having a transition plug body will be described with reference to the drawings.

In FIG. 1, A is a container main body, B is an inner plug attached to the container main body A, and C is a screw cap detachably attached to the inner plug B by screwing.

As shown in FIG. 1, the mouth portion 1 of the container main body A is provided with a locking projection 2 that is fitted to the inner plug B to prevent it from coming off.
As shown in FIGS. 1 and 2, the inner plug B is composed of an outer cylinder 5 on the outer peripheral side, an inner cylinder 6 on the inner peripheral side, and an upper wall 7 positioned on the top surface side of the mouth portion 1. A fitting cylinder portion 4 forming an annular groove into which is fitted, a threaded wall portion 8 erected from the fitting cylinder portion 4, and an upper end of the threaded wall portion 8 extending inward from the upper end of the container body A. It is composed of a top wall 9 formed with a spout for the contained contents and a spout tube 10 erected from the spout of the top wall 9. - 特許庁

The pouring tube 10 has a cylindrical base portion 11 connected to the inner edge of the top wall 9 and a lip portion 12 having an enlarged diameter and curved outward at the upper portion of the base portion 11 .
A transfer plug 15 is integrally connected to the inner peripheral surface of the base portion 11 of the pouring tube 10 via a thin weakened portion 14 formed over the entire circumference.
The transition plug body 15 has a hollow columnar wall 16 with a closed top and a ring-shaped bottom wall 17 provided at the bottom of the columnar wall 16 to seal the spout together with the thin weakened portion 14 .

As shown in FIG. 2( a ), the columnar wall 16 has external teeth 18 that form the first tooth portion on the outer circumference and protrude at six locations in the circumferential direction. , and its plan view shape is substantially fan-shaped.
In this embodiment, the external teeth 18 are provided at six locations in the circumferential direction, but the number is not limited to six, and they can be provided at a plurality of appropriate locations according to the shape of the transition plug body 15 or the like.

The bottom wall 17 includes an enlarged diameter portion 20 having a predetermined height from the lower surface on the outer peripheral side of the columnar wall 16, a first engaging protrusion 21 provided around the upper peripheral portion of the enlarged diameter portion 20, and an enlarged diameter portion. A flange portion 22 is formed continuously at the outer peripheral lower portion of the portion 20 , gradually becoming thinner toward the outside and continuously connected to the thin weakened portion 14 .
In this embodiment, the inner plug B has a transfer plug body 15 connected via a thin weakened portion 14 formed on the inner peripheral surface of the pouring cylinder 10. Any of them may be used, and for example, a pouring cap that pulls up the removed portion from the partition wall by a pull ring and is opened may be used as the plug removing mechanism.

The threaded wall portion 8 extends vertically from the outer peripheral edge of the ceiling wall 9 which is connected to the lower portion of the pouring tube 10 at the inner peripheral edge thereof, and the outer peripheral surface is provided with a male thread 23 constituting the first threaded portion.
As shown in FIG. 1(b), the male thread 23 is not vertically symmetrical in cross section like a normal screw thread, but has an inclined upper surface 23a formed with a steep upper surface and a flat lower surface. The male thread 23 is formed of a double thread starting at 180° intervals at the upper end as shown in FIG. 2(a).
In this embodiment, the male screw 23 has two threads, but it can have three or more threads depending on the height of the threaded wall portion 8 .

As shown in FIG. 2, the peripheral edge of the top wall 9 is provided with a recessed stepped portion 25 on the outer peripheral side. are arranged.

The fitting cylinder portion 4 is formed with a fitting groove into which the mouth portion 1 of the container body A is fitted by the outer cylinder 5 , the inner cylinder 6 , and the upper wall 7 . An engagement reduced diameter portion 27 that engages with the engagement ridge 2 to prevent the opening 1 from coming off is provided.
As shown in FIG. 2, the upper surface of the upper wall 7 is provided with stoppers 28 at three locations in the circumferential direction, and a first contact surface 28a is formed substantially perpendicular to the screwing direction. is formed with a first inclined surface 28b.

Further, the inner plug B is provided with an unsealing confirmation portion 30 which is formed so as to expand in diameter from the outer peripheral surface, and which can visually confirm that the screw cap C has been unsealed by an unsealing display portion 60 which will be described later.
As shown in FIG. 2 , the unsealing confirmation portion 30 is formed as a diameter-enlarged tubular portion having an opening portion 34 on the side surface. A ring-shaped stepped wall portion 31 is provided, and an outer peripheral tube portion 32 is vertically provided from the outer edge of the stepped wall portion 31 and extends to the lower end portion of the outer tube 5 .

The stepped wall portion 31 and the outer cylindrical portion 32 have an inverted L-shaped vertical cross section and are connected to the outer cylinder 5 by reinforcing ribs 36 .
An arc-shaped slit 33 is formed in the stepped wall portion 31 over a predetermined arc range from the reinforcing rib 36, and the slit 33 is connected to the rear slit 33a by the locking portion 35 having the first end portion 35a and the second end portion 35b. It is divided into a front slit 33b.
A laterally elongated opening 34 is formed in the outer cylindrical portion 32 in the vicinity of the position where the engaging portion 35 of the stepped wall portion 31 is formed.

As shown in FIGS. 1 and 3, the screw cap C is connected to a cap body C1 having a female thread 50 that screws onto the male thread 23 of the inner plug B, and to the cap body C1 via a breakable weakened coupling piece 42. and a sealing band C2.
The weakened connection piece 42 is a small rib-shaped connection piece having a breakable small cross section provided at a plurality of locations in the circumferential direction, and constitutes the weakened connection portion of the present invention. The weakened portion is not limited to a simple connecting piece, and may be a weakened portion having an appropriate shape such as a thin weakened portion or a thin portion with perforations.

The cap main body C1 includes a disk-shaped top wall 40 and an outer peripheral wall 41 extending vertically from the outer peripheral edge of the top wall 40. On the inner surface of the top wall 40, in order from the inside, a cutting tube portion 43, A screw cylinder portion 44 is vertically provided integrally with the top wall 40, and further, between the cutting cylinder portion 43 and the screw cylinder portion 44, two sound producing members 45 are concentrically arranged at 180° intervals. ing.

As shown in FIG. 3, when the lid is closed, the cutting cylinder portion 43 has a sealed envelope 47 whose outer periphery is in close contact with the inner peripheral surface of the pouring tube 10 to seal the pouring port. Internal teeth 48 forming a second tooth portion that engages with the external teeth 18 are provided.
In this embodiment, the external teeth 18 and the internal teeth 48 have the same shape, but by providing the external teeth and the internal teeth with different widths, it is possible to easily position the inner plug B and the screw cap C when setting them. can do.

Further, the cutting tube portion 43 is a ring-shaped second engaging projection that crosses over the first engaging projection 21 formed on the transition plug body 15 of the inner plug B and closely fits on the outer peripheral surface of the enlarged diameter portion 20. A portion 49 is formed on the inner circumference of the tip.
The threaded cylindrical portion 44 is provided with a female thread 50 constituting a second threaded portion to be screwed to the male thread 23 of the inner plug B on the inner periphery. As shown in FIG. 3B, the cross section is not vertically symmetrical, and is composed of a flat upper surface 50a with a flat upper surface and an inclined lower surface 50b with a steeply inclined lower surface. As shown, the lower end is formed with double-start threads beginning at 180° intervals.
The female thread 50 can be a multi-threaded thread having three or more threads corresponding to the male thread 23, as described above.

Three wedge-shaped recesses 51 that engage with the stopper 28 are formed in the lower end surface of the threaded cylinder portion 44 in the circumferential direction.
The wedge-shaped concave portion 51 is formed with a second contact surface 51a substantially perpendicular to the screwing-out direction, and a second inclined surface 51b is formed in the screwing-in direction. It has a shape corresponding to the first inclined surface 28b.
Although the stopper 28 and the wedge-shaped concave portion 51 are provided at three locations in the circumferential direction in this embodiment, they are not limited to this and can be provided at a plurality of appropriate locations.

The sound producing member 45 is composed of a rigid plate-like base portion 52 extending from the lower surface of the top wall 40 and a bar-like vibrating piece 53 extending from the base portion 52 and formed to be elastically deformable.
In the sound producing member 45, the tip of the vibrating bar 53 abuts the sound producing protrusion 26 of the inner plug B just before the tightening of the screw cap C is completed. At the same time, the vibrating bars 53 are set so as to get over the sound producing protrusions 26 and try to restore themselves, thereby vibrating and producing sounds.
In this embodiment, the base 52 is arranged at two concentric 180° intervals, but the base 52 may be continuous in a ring shape.

The sealing band C2 has an unsealing indicating portion 60 that can be visually recognized through the opening 34 formed on the side surface of the unsealing confirming portion 30 when the screw cap C is opened.
The sealing band C2 includes a ring portion 61 connected to the lower end of the outer peripheral wall 41 of the cap body C1 via a weakened connecting piece 42. The unsealing indicator portion 60 is connected to a connection portion 62 vertically provided from the lower end of the ring portion 61. , a display plate 63 extending in the circumferential direction from the connection portion 62 toward the lid opening direction and having “OPEN” displayed on the outer surface thereof, and a claw portion 64 formed at the tip portion of the display plate 63 . there is

Next, the mode of use and effects of this embodiment will be described.
First, in order to attach the pouring cap of this embodiment to the container main body A, the screw cap C is pushed in from the top of the inner plug B, the inner plug B and the screw cap C are set, and then the inner plug B is attached to the mouth portion 1. The fitting cylinder part 4 of is applied and plugged.

When the screw cap C is pushed in from the upper part of the inner plug B and set, the positions of the inner plug B and the screw cap C in the circumferential direction may be temporarily aligned by a mark (not shown) or the like. Since it extends downward from the sealing band C2, it is also possible to insert the unsealing indicating portion 60 into the rear slit 33a of the slit 33 formed in the stepped wall portion 31 of the unsealing confirming portion 30 so as to be aligned. Furthermore, when the screw cap C is placed so as to be aligned with the axial center of the inner plug B, as shown in FIG. , the lower surface of the inner tooth 48 of the cutting tube portion 43 of the screw cap C abuts on the upper surface of the outer tooth 18 of the transition plug body 15 and is likely not to be fitted between the outer teeth 18 .

In this case, when the screw cap C is slightly rotated in the left-right direction with no load applied to the screw cap C, the inner teeth 48 of the cutting tube portion 43 are fitted between the outer teeth 18, and the transition is made. It becomes possible to engage with the outer teeth 18 of the plug body 15 .
From this state, when the screw cap C is pushed into the inner plug B, the female thread 50 of the cap main body C1 overcomes the male screw 23 while the inclined lower surface 50b is in sliding contact with the inclined upper surface 23a of the male screw 23, and the threaded cylindrical portion of the cap main body C1. 44 is fitted to the threaded wall portion 8 of the inner plug B. As shown in FIG.

At this time, the unsealing indicator 60 of the sealing band C2 is retracted into the unsealing confirming part 30 as shown in FIG. " will be invisible.
At the same time, the second engaging projection 49 of the cutting tube portion 43 climbs over the first engaging projection 21 formed on the transition plug body 15 of the inner plug B and engages with the outer peripheral surface of the enlarged diameter portion 20. Further, the wedge-shaped recessed portion 51 at the bottom of the threaded cylindrical portion 44 is fitted to the stopper 28 of the upper wall 7 of the inner plug B, so that the second contact surface 51a of the wedge-shaped recessed portion 51 contacts the stopper 28. The screwing of both screws is completed by abutting against the first abutment surface 28a.

The pouring cap assembled in the set state is capped by fitting the fitting cylindrical portion 4 of the inner plug B against the mouth portion 1 of the container body A filled with the content, and is used.
Thus, the spout cap of this embodiment can be attached to the inner plug B by pushing the screw cap C when setting the screw cap C on the inner plug B. Thus, the setting of the screw cap C and the inner plug B can be completed with one touch without the need for a ratchet mechanism, and the unsealing display portion 60 extending downward from the sealing band C2 can be attached to the unsealing confirmation portion 30 of the inner plug B. Since it can be inserted into the slit 33 formed in the inner plug B, the set workability of the screw cap C and the inner plug B can be improved.

Next, in order to use the container fitted with the pouring cap of this embodiment, the screw cap C is rotated in the opening direction with respect to the inner plug B from the state shown in FIG.
When the screw cap C is rotated in the lid opening direction, the sealing band C2 connected to the cap main body C1 and the weakened connecting piece 42 is rotated together with the cap main body C1, and the unsealing indicator 60 is also turned as seen in FIG. 5(b). Moving rightward, the claw portion 64 at the tip of the unsealing indicator portion 60 abuts the first end portion 35 a of the locking portion 35 .
Further, as the rotation progresses, the pawl portion 64 of the opening indicating portion 60 climbs over the locking portion 35, and as shown in FIG. stops moving, and the characters "OPEN" on the display plate 63 can be seen through the opening 34 of the unsealing confirmation part 30, and the unsealing of the pouring cap can be confirmed at a glance.

Further, as the rotation progresses, the movement of the unsealing indicating portion 60 stops, so that the weakened connecting piece 42 provided between the cap main body C1 and the sealing band C2 is broken, and the sealing band C2 is separated from the cap main body C1. Since they are separated, the unsealing can be confirmed visually by the unsealing confirmation part 30 and the unsealing display part 60 before the weakened connecting piece 42 of the sealing band C2 is broken.
At the same time, the internal teeth 48 of the cutting tube portion 43 are rotated so that the engaging surfaces of the internal teeth 48 come into contact with the engaging surfaces of the external teeth 18 of the transition plug body 15 of the inner plug B, and the screw cap The rotational force of C is applied to the transition plug body 15 via the internal and external teeth.

At the same time, from the state shown in FIG. 5(a), the tip of the vibrating piece 53 of the sound producing member 45 of the screw cap C comes into contact with the sound producing protrusion 26 of the top wall 9 of the inner plug B, and when the rotation progresses further. , the vibrating bar 53 advances while bending and deforming, and as shown in FIG. emitted.

At this time, since the second engaging projection 49 of the cutting cylinder 43 is tightly fitted to the outer peripheral surface of the enlarged diameter portion 20 of the transition plug 15, the transition plug is pulled out as the screw cap C is rotated. A force that pulls up 15 can be generated on the entire periphery of enlarged diameter portion 20 .
As the rotation of the screw cap C progresses, the thin weakened portion 14 finally breaks due to the rotational force and lifting force applied to the transition stopper 15, and the spout is opened in the spout tube 10, and the spout is opened from the spout tube 10. The separated transition plug body 15 is pulled up by the second engaging projection 49 of the cutting cylinder 43 that engages with the first engaging projection 21 of the bottom wall 17, and rises together with the screw cap C. As shown in FIG.

Further, as shown in FIG. 7, when the female thread 50 is screwed off from the male thread 23 and the screw cap C is separated from the inner plug B, the pouring tube 10 from which the transition plug body 15 has been removed together with the screw cap C can be poured. The contents in the container main body A can be poured out from the outlet.

After pouring out the contents, when screwing the screw cap C onto the inner plug B again, the airtight envelope 47 of the cut tube portion 43 of the screw cap C is brought into close contact with the inner periphery of the pour tube 10 to close the container. The inside of the main body A can be sealed.
Further, when the two screws are completely screwed together, the tip of the vibrating piece 53 of the sound producing member 45 contacts the sound producing protrusion 26 and vibrates again, thereby producing a sound. can sensuously know the completion of closing the cap.

In this embodiment, a stopper 28 and a wedge-shaped recess 51 are provided on the inner plug B and the screw cap C in order to stop the rotation after the lid is closed. The user can intuitively know when the cap is closed. A sound output mechanism may not be provided.

Next, a second embodiment in which the structures of the unsealing confirmation portion 30 of the inner plug B and the unsealing indication portion 60 of the screw cap C of the first embodiment are changed will be described with reference to FIGS. 8 to 11. FIG.
Hereinafter, the same reference numerals are assigned to the same components as in the first embodiment, and new reference numerals are assigned to the changed portions in the unsealing confirmation section 30 and the unsealing display section 60, and the differences will be mainly described.

As shown in FIG. 8, A is a container body, Ba is an inner plug attached to the container body A, and Ca is a screw cap detachably attached by being screwed to the inner plug Ba.

The inner plug Ba is formed by increasing the diameter from the outer peripheral surface, and is provided with an unsealing confirmation portion 70 that can be visually recognized by an unsealing display portion 80 to be described later that the screw cap Ca has been unsealed.
As shown in FIG. 9( a ), the unsealing confirmation part 70 is formed as a diameter-enlarged tubular part provided with a pair of openings 74 facing each other on the side surfaces thereof. and a radially extending ring-shaped stepped wall portion 71 formed from a hollow wall, and an outer peripheral cylindrical portion 72 extending vertically from the outer edge of the stepped wall portion 71 and extending to the lower end of the outer cylinder 5 .

The stepped wall portion 71 and the outer cylindrical portion 72 are formed to have an inverted L-shaped longitudinal section, and are connected to the outer cylinder 5 by a pair of reinforcing ribs 76 facing each other.
A pair of arcuate slits 73 are formed in the stepped wall portion 71 over a predetermined arcuate range from each reinforcing rib 76 . It is divided into a slit 73a and a front slit 73b.
A pair of laterally elongated openings 74 are formed in the outer cylindrical portion 72 in the vicinity of the positions where the locking portions 75 of the stepped wall portion 71 are formed.

As shown in FIG. 10, the screw cap Ca includes a cap body C1 having a female thread 50 screwed to the male thread 23 of the inner plug Ba, and a sealing band connected to the cap body C1 via a breakable weakened connecting piece 42. C2a.

The sealing band C2a includes a pair of tamper-evident indicators 80 that are visible through a pair of openings 74 formed on the side surfaces of the tamper-evident part 70 when the screw cap Ca is opened.
The sealing band C2a includes a ring portion 81 connected to the lower end of the outer peripheral wall 41 of the cap body C1 via a weakened connecting piece 42. The unsealing indicator portion 80 is connected to a connection portion 82 vertically provided from the lower end of the ring portion 81. , a display plate 83 extending circumferentially from a connection portion 82 toward the cover opening direction, a claw portion 84 formed at the tip of the display plate 83, and a lower end of the display plate 83 toward the cover closing direction. It has an extended lateral beam 85 and a support wall 86 connecting the end of the lateral beam 85 and the ring portion 81 .

Next, the mode of use and effects of this embodiment will be described.
In order to attach the pouring cap of this embodiment to the container main body A, similarly to the first embodiment, the screw cap Ca is pushed in from the top of the inner stopper Ba, the inner stopper Ba and the screw cap Ca are set, and then the mouth is opened. The fitting cylindrical portion 4 of the inner plug Ba is applied to the portion 1 to plug it.

In order to set the screw cap Ca by pushing it from the top of the inner plug Ba, the positions of the inner plug Ba and the screw cap Ca may be temporarily aligned with each other in the circumferential direction by means of a mark (not shown) or the like. Since the tamper indicator 80 extends downward from the sealing band C2a, the tamper indicator 80 can be inserted into the rear slit 73a of the slit 73 formed in the stepped wall portion 71 of the tamper confirmation section 70, and positioned In addition, the screw cap Ca is placed so as to be aligned with the axial center of the inner plug Ba.

After that, if the internal teeth 48 of the screw cap Ca are not fitted between the external teeth 18 of the transition plug body 15, the screw cap Ca is slightly rotated in the left-right direction while no load is applied to the screw cap Ca. Then, the internal teeth 48 of the screw cap Ca are fitted between the external teeth 18 and are ready to engage with the external teeth 18 of the transition plug body 15 .

Next, when the screw cap Ca is pushed into the inner plug Ba from this state, the screw cap Ca can be set on the inner plug Ba in the same manner as in the first embodiment.
At this time, as shown in FIG. 8, the pair of unsealed display portions 80 of the sealing band C2a are retracted into the unsealed confirmation portion 70 and displayed on the display plate 83 through the pair of openings 74 formed in the outer peripheral cylindrical portion 72. The character of "OPEN" that is displayed becomes invisible.

Next, in order to use the container fitted with the pouring cap of this embodiment, the screw cap Ca is rotated in the lid opening direction with respect to the inner plug Ba from the state shown in FIG.
When the screw cap Ca is rotated in the lid opening direction, the sealing band C2a connected to the cap main body C1 and the weakened connecting piece 42 is rotated together with the cap main body C1, and the pair of tamper indicator portions 80 are also shown in FIG. 8(b). As seen, the claw portion 84 of the unsealing indicating portion 80 contacts the first end portions 75 a of the pair of locking portions 75 .
Further, as the rotation progresses, the pawl portion 84 of the unsealing indicating portion 80 climbs over the locking portion 75, and in this embodiment, as shown in FIG. , the movement of the unsealing display portion 80 stops, and the characters "OPEN" on the display plate 83 can be visually recognized from the pair of openings 74 of the unsealing confirmation portion 70, and the unsealing of the pouring cap can be confirmed at a glance from both sides of the pouring cap. can do.

Further, as the rotation progresses, in this embodiment, the pair of unsealing indicating portions 80 are locked to the pair of locking portions 75, so that the sealing band C2a is stably locked at two opposing locations. The weakened connecting piece 42 provided between the cap main body C1 and the sealing band C2a is broken, and the sealing band C2a is separated from the cap main body C1.
As the rotation of the screw cap Ca progresses, the thin weakened portion 14 finally breaks due to the rotational force and lifting force applied to the transition plug body 15 to open the spout in the spout tube 10 . The separated transition plug body 15 is pulled up by the second engaging protrusion 49 of the cutting tube 43, rises together with the screw cap Ca, the female thread 50 is screwed off from the male thread 23, and the screw cap Ca is separated from the inner plug Ba. By detachment, the contents in the container main body A can be poured out from the pouring port of the pouring tube 10 from which the transfer stopper 15 has been removed together with the screw cap Ca.

Next, a third embodiment in which the configuration of the unsealing confirmation portion 70 of the inner plug Ba and the unsealing display portion 80 of the screw cap Ca of the second embodiment is changed will be described with reference to FIGS. 12 to 18. FIG.
Hereinafter, the same reference numerals are given to the same components as in the second embodiment, and new reference numerals are given to the changed portions in the unsealing confirmation section 70 and the unsealing display section 80, and the differences will be mainly described.

As shown in FIG. 12, A is a container body, Bb is an inner plug attached to the container body A, and Cb is a screw cap detachably attached by being screwed to the inner plug Bb.

The inner plug Bb is formed by increasing the diameter from the outer peripheral surface, and is provided with an unsealing confirmation portion 90 that can be visually recognized by an unsealing display portion 100 to be described later that the screw cap Cb has been unsealed.
As shown in FIG. 14 , the unsealing confirmation portion 90 is formed as a diameter-enlarged tubular portion having a pair of openings 94 facing each other on the side surfaces thereof. and an outer cylindrical portion 92 extending vertically from the outer edge of the stepped wall portion 91 in parallel with the outer cylinder 5 and extending to the lower end of the outer cylinder 5 .

A first slit 93a and a second slit 93b are formed between the outer cylinder 5 and the outer cylinder part 92 in a range from one step wall part 91 to the other step wall part 91, respectively.
A locking portion 95 having a first end portion 95a and a second end portion 95b is vertically provided on the lower surface of the stepped wall portion 91, and the outer cylindrical portion 92 extends from the position where each locking portion 95 is formed. A pair of laterally long openings 94 are formed along the circumferential direction at positions separated in the lid closing direction.
The stepped wall portion 91 and the outer cylindrical portion 92 are connected to the outer tube 5 by a pair of reinforcing ribs 96 vertically provided from the ends of the stepped wall portion 91 in the lid opening direction.

Further, the unsealing confirmation unit 90 is provided with a sorting mechanism D that separates the inner plug Bb from the container body A so that it can be sorted and discarded.
As shown in FIGS. 13 and 15, the outer cylindrical portion 92 is formed from the vicinity of the reinforcing rib 96, which is one end of the first slit 93a, by a thin vertical cut portion 110 which is formed so as to be broken in the axial direction. It is separated from the outer peripheral cylindrical portion 92 on the side and can be deployed outward.
A hook recess 111 for hooking by inserting a fingertip is formed in the right direction from the vertical cut portion 110 of the outer cylindrical portion 92 .

14(b) and 15(b), the lower portion of the outer cylinder 5 adjacent to the first end portion 95a, which is the terminating side of the first slit 93a, including the engagement reduced diameter portion 27, has a diameter A breakable radial cut portion 112 is formed between the outer cylinder 5 and the outer cylinder portion 92 .
The lower part of the outer cylinder 5 is at the same height as the upper end part of the outer cylinder part 92 , and is provided with a notch recess 113 extending radially from the outer peripheral surface in the circumferential direction. In the 93b direction, as shown in FIGS. 14 and 15, a breakable thin circumferential cut portion 114 is formed on the inner peripheral side of the outer cylinder 5 .

As shown in FIGS. 14 and 15 , since the circumferential cut portion 114 is provided from the radial cut portion 112 toward the vertical cut portion 110 in a counterclockwise direction when viewed from above, the unsealing confirmation portion 90 is formed from the radial cut portion. It is sandwiched between 112 and vertical cut portion 110, and is formed so as to be separable together with the lower portion of outer cylinder 5 at a portion that mostly corresponds to second slit 93b.
The circumferential cut portion 114 provided in the notch recess 113 is preferably formed over an arc range with a central angle of at least 180°. formed.

As shown in FIG. 16, the screw cap Cb includes a cap body C1 having a female thread 50 that screws onto the male thread 23 of the inner plug Bb, and a sealing band connected to the cap body C1 via a breakable weakened connecting piece 42. C2b.
The sealing band C2b includes a pair of tamper indicator portions 100 that are visible through a pair of openings 94 formed on the side surfaces of the tamper confirmation portion 90 when the screw cap Cb is opened.

The sealing band C2b has a ring portion 101 connected to the lower end of the outer peripheral wall 41 of the cap body C1 via a weakened connecting piece 42, and the unsealing display portion 100 is a pair of display plates vertically provided from the lower end of the ring portion 101. 103, claw portions 104 extending in the circumferential direction from the lower portion of the display plate 103 toward the lid opening direction, horizontal beams 105 extending from the lower end of the display plate 103 toward the lid closing direction, and the horizontal beams 105. A support wall 106 connecting the terminal end and the ring portion 101 is provided.
Further, the sealing band C2b is formed with a fracturable thin ring weakened portion 107 near the display plate 103 of the ring portion 101 .

Next, the mode of use and effects of this embodiment will be described.
In order to attach the pouring cap of this embodiment to the container main body A, similarly to the second embodiment, the screw cap Cb is pushed in from the top of the inner plug Bb, the inner plug Bb and the screw cap Cb are set, and then the container is The inner plug Bb is applied to the mouth portion 1 of the main body A to plug it.

In order to set the screw cap Cb by pushing it from the top of the inner plug Bb, the positions of the inner plug Bb and the screw cap Cb in the circumferential direction may be temporarily aligned with a mark (not shown) or the like. Since the tamper indicator 100 extends downward from the sealing band C2b, the tamper indicator 100 is inserted into the first slit 93a and the second slit 93b formed between the pair of stepped wall portions 91 of the tamper confirmation section 90. It is also possible to align the screw cap Cb so that it can be inserted. Further, the screw cap Cb is placed so as to be aligned with the axial center of the inner plug Bb.

After that, if the internal teeth 48 of the screw cap Cb are not fitted between the external teeth 18 of the transition plug body 15, the screw cap Cb is slightly rotated in the left-right direction while no load is applied to the screw cap Cb. Then, the internal teeth 48 of the screw cap Cb are fitted between the external teeth 18 and are ready to engage with the external teeth 18 of the transition plug body 15 .

Next, when the screw cap Cb is pushed into the inner plug Bb from this state, the screw cap Cb can be set on the inner plug Bb as shown in FIG. 13 in the same manner as in the second embodiment.
At this time, as shown in FIG. 12, the pair of unsealed display portions 100 of the sealing band C2b are retracted into the unsealed confirmation portion 90 and displayed on the display plate 103 through the pair of openings 94 formed in the outer cylindrical portion 92. However, in this embodiment, the pawl portion 104 extending in the circumferential direction from the lower portion of the display plate 103 of the unsealing display portion 100 toward the lid opening direction is By exposing an arrow-like shape from the opening 94 formed in the tubular portion 92, the opening direction can be clearly indicated to anyone who opens the package.

Next, in order to use the container fitted with the pouring cap of this embodiment, the screw cap Cb is rotated in the opening direction with respect to the inner plug Bb from the state shown in FIG.
When the screw cap Cb is rotated in the lid opening direction, the sealing band C2b connected to the cap main body C1 and the weakened connecting piece 42 is rotated together with the cap main body C1, and the pair of tamper indicator portions 100 are also shown in FIG. 12(a). As seen, the claw portion 104 of the unsealing indicating portion 100 contacts the first end portion 95 a of the pair of locking portions 95 .

Further, as the rotation progresses, the claw portion 104 of the unsealing indicating portion 100 climbs over the locking portion 95, and as shown in FIG. As a result, the movement of the unsealing display portion 100 is stopped, and the characters "OPEN" on the display plate 103 can be seen through the pair of openings 94 of the unsealing confirmation portion 90, and the pouring cap can be unsealed from both sides of the pouring cap. You can check it at a glance.

At this time, in the present embodiment, the pair of unsealing indicating portions 100 are locked to the pair of locking portions 95, so that the sealing band C2b is stably locked at two opposing locations, and the cap body C1 and the sealing band C2b are stably locked. The weakened connecting piece 42 provided between the band C2b is broken, and the sealing band C2b is separated from the cap main body C1.
As the rotation of the screw cap Cb progresses, the thin weakened portion 14 finally breaks due to the rotational force and lifting force applied to the transition plug body 15 to open the spout in the spout tube 10 . The separated transition plug body 15 is pulled up by the second engaging protrusion 49 of the cutting tube 43, rises together with the screw cap Cb, the female screw 50 is screwed off from the male screw 23, and the screw cap Cb is separated from the inner plug Bb. By detachment, the contents in the container main body A can be poured out from the pouring port of the pouring tube 10 from which the transfer stopper 15 has been removed together with the screw cap Cb.

In the pouring cap of this embodiment, when the container is discarded after use, the inner plug Bb can be separated from the container main body A by a simple operation, and the containers can be separated and discarded.
First, after removing the cap main body C1 of the screw cap Cb from the inner plug Bb, when the finger is put on the hook recess 111 near the vertical cut portion 110 shown in FIG. ), the longitudinally cut portion 110 is broken, and the outer peripheral cylinder portion 92 is expanded outward so as to widen the first slit 93a, but the ring portion 101 of the sealing band C2b is not cut and is attached to the outer cylinder 5 remains on the periphery of the

When the outer peripheral tubular portion 92 is further pulled while gripping the outer peripheral tubular portion 92 with fingers, as shown in FIG. The radial cut portion 112 provided adjacent to the first end 95a) of the outer cylinder 5 is broken, and the circumferential cut portion 114 of the outer cylinder 5 begins to be broken.
When the breakage of the circumferential cut portion 114 is started, the outwardly expanded outer peripheral cylinder portion 92 is expanded outward together with the step wall portion 91 and the second slit 93b, and the ring portion 101 is suspended from the lower end. The provided support wall 106 is pulled outward as the second slit 93b is expanded, and the weakened ring portion 107 is broken.

At the same time, the portion of the outer cylinder 5 at that portion is broken along the circumferential cut portion 114 at the lower portion formed with the engagement reduced diameter portion 27 (see FIGS. 14(a) and 15(a)). As a result, at the point where the circumferential cut portion 114 is broken, the engagement of the locking reduced diameter portion 27 with the locking projection 2 (see FIG. 1) is released, so the breakage progresses to the vicinity of the stepped wall portion 91. Then, the restraint on the mouth portion 1 by the engagement reduced diameter portion 27 is released, and when the outer cylindrical portion 92 is pulled up, the inner plug Bb can be detached from the container main body A and separated and discarded.

In the pouring cap of the present invention, it is necessary to maintain the sealed state before the start of use because the unsealed state can be visually confirmed by the unsealing confirmation portion of the inner plug simply by rotating the screw cap in the opening direction. It can be widely used as a container for foods and drinks, seasonings, etc., and is particularly suitable as a container that can be easily opened and used by anyone.

A Container body B, Ba, Bb Inner plug C, Ca, Cb Screw cap C1 Cap body C2, C2a, C2b Sealing band D Sorting mechanism 1 Mouth 2 Locking rib 4 Fitting cylinder 5 Outer cylinder 6 Inner cylinder 7 Upper wall 8 Threaded wall portion 9 Top wall 10 Extraction tube 11 Base portion 12 Lip portion 14 Thin weakened portion 15 Transition plug body 16 Columnar wall 17 Bottom wall 18 External tooth (first tooth portion)
20 Expanded diameter portion 21 First engagement protrusion 22 Flange portion 23 Male thread (first thread portion)
23a Inclined upper surface 23b Flat lower surface 25 Stepped portion 26 Sound producing projection 27 Locking reduced diameter portion 28 Stopper 28a First contact surface 28b First inclined surface 30, 70, 90 Unsealing confirmation portion (expanded cylindrical portion)
31, 71, 91 step wall portions 32, 72, 92 outer cylindrical portions 33, 73 slits 33a, 73a rear slits 33b, 73b front slits 34, 74, 94 openings 35, 75, 95 locking portions 35a, 75a, 95a First end portions 35b, 75b, 95b Second end portions 36, 76, 96 Reinforcement rib 40 Top wall 41 Peripheral wall 42 Weakened connection piece (weakened connection portion)
43 Cutting cylinder part 44 Screw cylinder part 45 Sound producing member 47 Airtight envelope 48 Internal tooth (second tooth part)
49 Second engagement projection 50 Female thread (second threaded portion)
50a flat upper surface 50b inclined lower surface 51 wedge-shaped concave portion 51a second contact surface 51b second inclined surface 52 base portion 53 vibrating bars 60, 80, 100 unsealing indicator portions 61, 81, 101 ring portions 62, 82 connecting portions 63, 83, 103 Display plates 64, 84, 104 Claws 85, 105 Horizontal beams 86, 106 Support wall 93a First slit 93b Second slit 107 Ring weakened portion 110 Vertical cut portion 111 Hook recess 112 Radial direction cut portion 113 Notch recess 114 Circumferential direction cutting part

Claims (6)

An inner plug attached to the mouth of the container body, and a screw cap detachably attached by screwing to the inner plug,
The inner plug has an unsealing confirmation part provided on the outer periphery and a top wall in which a spout for the contents is formed,
The screw cap has a cap body that is screwed to the inner plug, and a sealing band that is connected to the lower end of the cap body via a breakable weakened connection,
The sealing band has a ring portion vertically provided with an unsealing display portion that is visible from the unsealing confirmation portion of the inner plug when the screw cap is opened,
The unsealing confirmation part is formed as a diameter-expanded cylindrical part having an opening on the side surface of the inner plug,
The unsealing display part has a display plate extending in the circumferential direction from the lower end of the ring part of the sealing band and visible from the opening of the expanded diameter cylinder part when the lid is opened,
The display plate has a connection portion provided on the rear end side in the lid opening direction and connected to the lower end of the ring portion, and a claw portion provided on the front end side in the lid opening direction,
A pouring cap , wherein the expanded diameter cylindrical portion has a locking portion that engages with the claw portion of the display plate . The diameter-enlarged cylindrical portion has a stepped wall portion in which an arc-shaped slit is formed, and an outer peripheral cylindrical portion vertically provided from the outer edge of the stepped wall portion,
2. The pouring cap according to claim 1 , wherein the display plate is inserted into the slit of the stepped wall when the screw cap is set . 3. The pouring cap according to claim 1 or 2 , wherein the claw portion is visible through the opening of the diameter-enlarged cylindrical portion before the lid is opened . The unsealing confirmation part has two openings,
4. The pouring cap according to any one of claims 1 to 3, wherein the unsealing indicator has two indicator plates . The inner plug has an outer cylinder attached to the mouth of the container body,
The expanded diameter cylindrical portion has a stepped wall portion extending radially from the outer peripheral surface of the outer cylinder, and an outer cylindrical portion vertically extending from the outer edge of the stepped wall portion in parallel with the outer cylinder,
The sealing band has a ring part with a tamper indication part hanging down at the lower end,
The inner plug has a sorting mechanism that can be separated from the container body and sorted and discarded in the outer cylinder and the expanded diameter cylinder part,
The sorting mechanism includes a vertical cut portion formed in the outer cylindrical portion facing one end side of the slit, and a radial cut portion adjacent to the other end side of the slit and formed in a breakable manner on the outer circumferential surface of the outer cylinder. and a notch radially cut out from the outer peripheral surface of the outer cylinder over a predetermined arc range in the direction opposite to the other end side of the slit from the radially cut portion, coinciding with the height of the upper surface of the radially cut portion. Having a recess and a thin circumferential cut portion formed so as to be broken on the inner peripheral side of the outer cylinder by the notch recess,
5. A pour cap according to any one of claims 1 to 4, characterized in that the ring portion of the sealing band has a breakable ring weakening in the vicinity of the radial cut . The inner plug is connected to the pouring tube erected from the pouring port of the top wall and the inner peripheral surface of the pouring tube through a thin weakened portion, and is pulled out by being engaged with the screw cap when the lid is opened. The pouring cap according to any one of claims 1 to 5, characterized in that it has a transition stopper .

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