JP6778477B2 - cap - Google Patents

Description

The present invention relates to a cap attached to the mouth of a double container.

Conventionally, as a cap of this type, for example, as shown in FIGS. 18 and 19, a cap body 103 externally fitted to the mouth 102 of the double container 101 and a pouring cylinder 104 provided in the cap body 103 are used. A lid 105 for opening and closing the tip opening of the dispensing cylinder 104, an inner plug 106 provided inside the cap body 103 and fitted into the mouth 102, and a valve device 107 provided inside the cap body 103. Have.
A discharge hole 108 is formed in the inner plug 106. Further, the valve device 107 includes a fitting portion 109, a disc portion 110, a disc-shaped discharge valve 111, and a suction valve (not shown). The discharge valve 111 is a valve that opens and closes the discharge hole 108, and is provided in the fitting portion 109 so as to swing in the vertical direction via the connecting portion 113. The suction valve is a valve that opens and closes between the air inflow hole 114 and the air inflow passage 115.

According to this, by opening the lid 105 and pressing the double container 101, the suction valve is closed, the air inflow hole 114 and the air inflow path 115 are blocked, and the outer layer 116 of the double container 101 is blocked. Since the air between the inner layer 117 and the inner layer 117 is not discharged and the internal pressure of the double container 101 rises, the discharge valve 111 opens the discharge hole 108 as shown by the virtual line in FIG. 19, and the double container 101 The content liquid inside is poured out from the pouring cylinder 104 through the discharge hole 108.

When the pressing operation is released, the internal pressure of the double container 101 decreases from the atmospheric pressure due to the restoring force of the outer layer 116 of the double container 101, and the discharge valve 111 closes the discharge hole 108 as shown by the solid line in FIG. At the same time, the space between the outer layer 116 and the inner layer 117 of the double container 101 is reduced from the atmospheric pressure, the suction valve is opened, and the atmosphere is passed from the air inflow hole 114 through the air inflow path 115 to the outer layer 116 and the inner layer. Introduced between 117.

The cap as described above is described in, for example, Patent Document 1 below.

Patent No. 3688373

However, in the above-mentioned conventional type, when the double container 101 is pressed, the discharge valve 111 opens the discharge hole 108 immediately (almost at the same time) as shown by the virtual line in FIG. 19, so that the content liquid in the double container 101 is opened. There is a problem that it is suddenly dispensed from the dispensing cylinder 104.

The present invention provides a cap that has a time allowance from pressing the double container until the content liquid is poured out from the spout, and can prevent the content liquid from being suddenly poured out from the spout. The purpose is to do.

In order to achieve the above object, the first invention is a cap attached to the mouth of a double container having a deformable inner container and an outer container.
The cap body that is fitted to the mouth of the double container and
The dispenser provided on the cap body and
A lid that opens and closes the spout that opens at the tip of the spout cylinder,
An inner plug provided inside the cap body and fitted into the mouth of the double container,
It has a first internal valve provided inside the cap body and has
The inner plug has an inner cylinder portion in which one end communicates with the inside of the inner container and the other end communicates with the inside of the pouring cylinder .
The first internal valve has a first valve body that covers the other end opening of the inner cylinder portion .
A flow hole is formed in the first valve body,
The first valve body is deformable into an open position that bulges in a convex shape in the pouring cylinder and a closed position that dents in a concave shape toward the inside of the inner cylinder portion, and is urged in the closing direction. ,
When the first valve body is in the closed position, the inside of the inner cylinder and the inside of the pouring cylinder are blocked by the first valve body.
When the first valve body is in the open position, the inside of the inner cylinder and the inside of the pouring cylinder communicate with each other through the flow hole of the first valve body.
When the first valve body is in the process of being deformed from the closed position to the open position, the inside of the inner cylinder and the inside of the injection cylinder are in a state of being bulged before reaching the open position and in the injection cylinder. The state in which the space is blocked by the first valve body is maintained.

According to this, by opening the lid and pressing the double container, the internal pressure of the double container rises, and the first valve body is poured from the closed position where the first valve body is recessed toward the inside of the inner cylinder. It deforms to an open position that bulges into a convex shape in the cylinder. As a result, the inside of the inner cylinder and the inside of the pouring cylinder communicate with each other through the flow hole of the first valve body, and the content liquid in the inner container passes from the inside of the inner cylinder through the flow hole into the pouring cylinder. It flows to and is poured out from the spout.

At this time, during the deformation of the first valve body from the closed position to the open position, the state in which the inside of the inner cylinder and the inside of the dispensing cylinder are blocked by the first valve body is maintained, and the first valve body is maintained. When the valve body of No. 1 reaches the open position, the inside of the inner cylinder portion and the inside of the injection cylinder communicate with each other through the flow hole. Therefore, when the double container is pressed, the time required for the first valve body to reach the open position from the closed position is delayed by the time required, and the space between the inner cylinder portion and the inside of the pouring cylinder is passed through the distribution hole. Communicate.

As a result, there is a time lag (delay) between the pressing operation of the double container and the pouring of the content liquid in the inner container from the spout, so the double container is pressed. There is time to allow the content liquid to be poured out from the spout, and it is possible to prevent the content liquid from being suddenly poured out from the spout.

Further, by releasing the pressing operation of the double container, the first valve body is deformed from the open position where it bulges in a convex shape into the injection cylinder to the closed position where it dents in a concave shape toward the inside of the inner cylinder portion. Then, the inside of the inner cylinder and the inside of the pouring cylinder are blocked by the first valve body. In this way, when the first valve body is closed, the first valve body dents from a convex shape that bulges into the dispensing cylinder to a concave shape toward the inside of the inner cylinder portion, so that the contents remaining in the dispensing cylinder. The liquid level of the liquid is drawn into the inside of the pouring cylinder by the volume integral corresponding to the deformation amount of the first valve body. As a result, it is possible to prevent the content liquid remaining in the pouring cylinder from reaching the spout at the tip of the pouring cylinder, and a suction back effect on the content liquid is exhibited.

In the cap according to the second invention, an accommodating portion for accommodating the first valve body and an pouring flow path communicating from the accommodating portion to the spout are formed in the pouring cylinder.
The diameter of the injection channel is smaller than the diameter of the accommodating part,
A plurality of flow holes are formed on the circumference of the first valve body facing the other end of the inner cylinder portion.
A guide surface is formed in the pouring cylinder to guide the content liquid flowing from the inner cylinder portion through the distribution hole to the accommodating portion in the pouring cylinder to the pouring flow path.

According to this, by opening the lid and pressing the double container, the content liquid in the inner container flows from the inner cylinder portion through the distribution hole to the accommodating portion in the pouring cylinder and is guided to the guide surface. It flows smoothly from the accommodating part to the pouring flow path and is poured out from the pouring outlet. As a result, the content liquid is radially poured out from the spout without disturbing the flow of the content liquid in the pouring cylinder.

In the cap according to the third invention, the first valve body has a protrusion that is in pressure contact with the other end of the inner cylinder portion over the entire circumference in the closed position.
The flow hole is located outside the protrusion in the radial direction of the first valve body.
When the first valve body is in the closed position, the protrusion is pressed against the other end of the inner cylinder portion, and the inside of the inner cylinder portion and the inside of the pouring cylinder are cut off by the first valve body.
When the first valve body is in the open position, the protrusion is separated from the other end of the inner cylinder portion, and the inside of the inner cylinder portion and the inside of the pouring cylinder communicate with each other through the flow hole of the first valve body. And
When the first valve body is in the process of being deformed from the closed position to the open position, the protrusion is pressed against the other end of the inner cylinder portion, and the space between the inner cylinder portion and the pouring cylinder portion is the first. It is maintained in a state of being blocked by the valve body of.

According to this, when the lid is opened and the double container is pressed, the protrusion is pressed against the other end of the inner cylinder portion during the deformation of the first valve body from the closed position to the open position. , The state in which the inside of the inner cylinder and the inside of the pouring cylinder are blocked by the first valve body is maintained, and when the first valve body reaches the open position, the protrusion is the other end of the inner cylinder. The inside of the inner cylinder portion and the inside of the injection cylinder communicate with each other through the flow hole of the first valve body. Therefore, when the double container is pressed, the time required for the first valve body to reach the open position from the closed position is delayed by the time required, and the space between the inner cylinder portion and the inside of the pouring cylinder is passed through the distribution hole. Communicate.

Further, by releasing the pressing operation of the double container, the first valve body is deformed from the open position where it bulges in a convex shape into the injection cylinder to the closed position where it dents in a concave shape toward the inside of the inner cylinder portion. Then, the protruding portion is pressed against the other end of the inner cylinder portion, and the inside of the inner cylinder portion and the inside of the dispensing cylinder are cut off by the first valve body. As a result, the space between the first valve body and the other end of the inner cylinder is securely sealed, and the air that has entered the injection cylinder is between the first valve and the other end of the inner cylinder. It is possible to reliably prevent the air from entering the inner container.

In the closed position, the protrusion is pressed against the other end of the inner cylinder in a state close to line contact, so that the pressure contact force per unit area is increased, the sealing performance is improved, and the blocking performance is sufficiently ensured. To. Further, it is possible to reduce the force of the pressing operation required to deform the first valve body from the closed position to the open position by pressing the double container.

The fourth invention is a cap attached to the mouth of a double container having a deformable inner container and an outer container.
The cap body that is fitted to the mouth of the double container and
The dispenser provided on the cap body and
A lid that opens and closes the spout that opens at the tip of the spout cylinder,
An inner plug provided inside the cap body and fitted into the mouth of the double container,
It has a first internal valve provided inside the cap body and has
The inner plug has a communication part that communicates with the inside of the inner container and the inside of the pouring cylinder.
The first internal valve has a first valve body that covers the communication part of the inner plug.
A flow hole is formed in the first valve body,
The first valve body can be deformed into an open position that bulges into the pouring cylinder and a closed position that retracts in the direction opposite to the open position, and is urged in the closed direction.
When the first valve body is in the closed position, the communication portion of the inner plug and the dispensing cylinder are blocked by the first valve body.
When the first valve body is in the open position, the communication portion of the inner plug and the pouring cylinder communicate with each other through the flow hole of the first valve body.
When the first valve body is in the process of being deformed from the closed position to the open position, before reaching the open position and in a state of bulging into the injection cylinder, the communication portion of the inner plug and the injection cylinder The state where the space is blocked by the first valve body is maintained,
An intake port for sucking outside air between the inner container and the outer container is formed on the cap body.
Inside the cap body, a communication flow path that communicates between the intake port and the inner container and the outer container, and a second internal valve that opens and closes the intake port are provided.
The second internal valve has a support member fixed between the cap body and the inner plug, and an elastically deformable second valve body provided on the support member.
The base end of the second valve body is provided on the support member and
When the pressure between the inner container and the outer container becomes higher than the atmospheric pressure, the free end of the second valve body presses against the inner surface of the cap body to close the intake port.
When the pressure between the inner container and the outer container becomes lower than the atmospheric pressure, the free end of the second valve body separates from the inner surface of the cap body and opens the intake port.
When the pressure between the inner container and the outer container is the same as the atmospheric pressure, a minute gap is formed between the free end of the second valve body and the inner surface of the cap body.
The intake port and the communication flow path communicate with each other through a minute gap .

According to this, when the lid is opened and the double container is pressed and the pressure between the inner container and the outer container becomes higher than the atmospheric pressure, the free end portion of the second valve body is brought to the inner surface of the cap body. Since the intake port is closed by pressure contact, the internal pressure of the double container rises, and the first valve body is deformed from the closed position to the open position. Thus, between the communicating portion and the pouring cylinder of the inner plug is communicated via the flow holes of the first valve body, the liquid content of the inner container is, through the flow holes from the communicating portion of the internal stopper Note It flows into the outlet and is poured out from the spout.

Further, when the pressing operation of the double container is released and the pressure between the inner container and the outer container becomes lower than the atmospheric pressure, the free end portion of the second valve body separates from the inner surface of the cap body and takes in air. In order to open the mouth, air pressure is introduced from the intake port through the communication flow path between the inner container and the outer container, the first valve body is deformed from the open position to the closed position, and the communication part of the inner plug and the note The connection with the outlet is blocked by the first valve body.

Further, since the base end portion of the second valve body is provided on the support member and the free end portion of the second valve body can be pressure-welded and separated from the inner surface of the cap body, the second valve body is an inner container. The intake port can be opened and closed quickly in response to changes in pressure between the outer container and the outer container.

Further, in the normal state where the double container is not pressed and the outer container is not deformed, the intake port and the communication flow path communicate with each other through a minute gap, so that the inside of the double container is more than the outside. Even if the temperature becomes high and the air between the inner container and the outer container expands thermally, the thermally expanded air flows out from the communication flow path to the intake port through the minute gap and is discharged from the intake port to the outside. Will be done. As a result, in the above-mentioned normal time, the pressure inside the double container and the pressure outside are balanced through the minute gap. Therefore, the air between the inner container and the outer container thermally expands and the pressure inside the double container rises, and the liquid level of the content liquid in the double container rises even though the double container is not pressed. It can be prevented from rising.
In the cap according to the fifth invention, the intake port and the communication flow path are formed at one place in the circumferential direction of the cap body.
The second internal valve is formed integrally with the first internal valve.

As described above, according to the present invention, there is a time lag between the pressing operation of the double container and the time when the content liquid in the double container is poured out from the spout. There is a time margin between the pressing operation and the time when the content liquid is poured out from the spout, and it is possible to prevent the content liquid from being suddenly poured out from the spout.

Further, by releasing the pressing operation of the double container, the first valve body is switched from the open position to the closed position, and at this time, the first valve body changes from the convex shape protruding into the pouring cylinder to the inside. Since it is recessed toward the inside of the cylinder, the liquid level of the content liquid remaining in the injection cylinder is drawn into the inside of the injection cylinder by the volume integral corresponding to the amount of deformation of the first valve body. As a result, it is possible to prevent the content liquid remaining in the pouring cylinder from reaching the spout at the tip of the pouring cylinder, and a suction back effect on the content liquid is exhibited.

It is sectional drawing of the cap in 1st Embodiment of this invention. It is a partially enlarged sectional view of the cap. The same is a perspective view of the cap. The same is a perspective view of the inner plug of the cap. The same is a plan view of the internal valve device of the cap. It is a perspective view seen from the upper side of the internal valve device of the cap. It is a perspective view seen from the lower side of the internal valve device of the cap. The same is a cross-sectional view showing the operation of the first internal valve of the cap, showing a state in which the first valve body is in the process of being deformed from the closed position to the open position. The same is a cross-sectional view showing the operation of the first internal valve of the cap, showing a state in which the first valve body has reached the open position. The same is a cross-sectional view showing the operation of the first internal valve of the cap, showing a state in which the first valve body is in the process of being deformed from the open position to the closed position. The same is a cross-sectional view showing the operation of the first internal valve of the cap, showing a state in which the first valve body has returned from the open position to the closed position. The same is an enlarged cross-sectional view of the second internal valve of the cap, showing a state in which a minute gap is formed between the second valve body and the cap body. It is sectional drawing which shows the operation of the 2nd internal valve of the cap, and shows the state which the 2nd valve body is closed. It is sectional drawing which shows the operation of the 2nd internal valve of the cap, and shows the state which the 2nd valve body is open. It is a partially enlarged sectional view of the cap in the 2nd Embodiment of this invention, and shows the state which the 1st valve body of the 1st internal valve reached a closed position. The same is a cross-sectional view showing the operation of the first internal valve of the cap, showing a state in which the first valve body is in the process of being deformed from the closed position to the open position. The same is a cross-sectional view showing the operation of the first internal valve of the cap, showing a state in which the first valve body has reached the open position. It is sectional drawing of the conventional cap. It is a partially enlarged sectional view of the cap.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First Embodiment)
In the first embodiment, as shown in FIGS. 1 to 3, 1 comprises a flexible and deformable inner container 2 having flexibility and an elastically deformable outer container 3 having flexibility. It is a double container to have. A cap 5 is provided at the mouth 4 of the double container 1.

The cap 5 is a lid that opens and closes a cap body 11 that is externally fitted to the mouth portion 4, a cylindrical pouring cylinder 12 provided on the cap body 11, and a pouring outlet 13 that opens at the tip of the pouring cylinder 12. It has a 14 and an inner plug 15 provided inside the cap body 11 and fitted into the mouth portion 4, and an internal valve device 16 provided inside the cap body 11.

The cap body 11 has a cylindrical body portion 20 and a disk-shaped top plate portion 21 provided at the tip of the body portion 20. The body portion 20 is screwed into the outer container 3 via the screw portion 22. The dispensing cylinder 12 is integrally provided on the top plate portion 21. Further, the top plate portion 21 is formed with an intake port 23 for sucking outside air into 37 between the inner container 2 and the outer container 3.

Inside the cap body 11, a communication flow path 38 that communicates with the intake port 23 and the space 37 between the inner container 2 and the outer container 3 is formed. The intake port 23 and the communication flow path 38 are formed at one location in the circumferential direction of the cap body 11.

The outer container 3 is provided with a seal protrusion 6 that seals between the inner circumference of the body 20 of the cap body 11 and the outer circumference of the mouth 4 of the outer container 3. Further, the lid 14 is provided on the cap body 11 so as to be openable and closable via the hinge portion 25.

As shown in FIGS. 1 and 4, the inner plug 15 has a cylindrical fitting portion 26 that is fitted into the tip opening of the inner container 2, and a flange portion 27 that projects radially outward from the tip of the fitting portion 26. It has a circular inner plate portion 28 formed on the inner peripheral portion of the fitting portion 26, and an inner cylinder portion 29 erected on the inner plate portion 28.

The inner cylinder portion 29 is an example of a communication portion, one end portion (lower end portion) communicating with the inner container 2 and the other end portion (upper end portion) communicating with the inside of the pouring cylinder 12.
As shown in FIGS. 1, 2, 5 and 7, the internal valve device 16 is made of an elastic member such as silicon rubber and has a first internal valve 31 and a second internal valve 32. There is. The first internal valve 31 is a valve having an M-shaped cross section, and has a circular first valve body 33 that covers the other end opening 30 of the inner cylinder portion 29 and a cylindrical first support cylinder 34. Have. The inner cylinder portion 29 is inserted into the first support cylinder 34 from one end of the first support cylinder 34, and the outer peripheral portion of the first valve body 33 is integrally provided at the other end of the first support cylinder 34. Has been done.

A plurality of flow holes 35 are formed on the circumference of the first valve body 33 facing the other end of the inner cylinder portion 29. The first valve body 33 is deformable into a closed position S that retracts into the inner cylinder portion 29 in a concave shape and an open position O that bulges from the inside of the inner cylinder portion 29 into the pouring cylinder 12 in a convex shape. At the same time, it is urged in the closing direction A.

As shown by the solid line in FIGS. 1 and 2, when the first valve body 33 is in the closed position S, the inside of the inner cylinder portion 29 and the inside of the dispensing cylinder 12 are blocked by the first valve body 33. .. Further, as shown by the virtual line of FIG. 2 and FIG. 9, when the first valve body 33 is in the open position O, the space between the inner cylinder portion 29 and the inside of the pouring cylinder 12 is the first valve body 33. It communicates through the distribution hole 35. Further, as shown in FIG. 8, when the first valve body 33 is in the process of being deformed from the closed position S to the open position O, the space between the inner cylinder portion 29 and the inside of the pouring cylinder 12 is the first. The state of being shut off by the valve body 33 of the above is maintained.

As shown in FIGS. 1, 5 and 7, the second internal valve 32 is provided integrally with the first internal valve 31 to open and close the intake port 23, and is a top plate portion of the cap body 11. A cylindrical second support cylinder 40 (an example of a support member) fixed between the inner plate 21 and the inner plate portion 28 of the inner plug 15, and an elastically deformable second support cylinder 40 provided on the second support cylinder 40. It has a valve body 41 of.

The second valve body 41 is a square thin plate-shaped valve body, and a base end portion thereof is provided on the outer periphery of the second support cylinder 40. When the pressure 37 between the inner container 2 and the outer container 3 becomes higher than the atmospheric pressure, the free end portion of the second valve body 41 becomes the inner surface of the top plate portion 21 of the cap body 11 as shown in FIG. The intake port 23 is closed by pressure contact. Further, when the pressure 37 between the inner container 2 and the outer container 3 becomes less than the atmospheric pressure, the free end portion of the second valve body 41 becomes the inner surface of the top plate portion 21 of the cap body 11 as shown in FIG. The intake port 23 is opened apart from the air pressure port 23.

When the pressure 37 between the inner container 2 and the outer container 3 is the same as the atmospheric pressure, the second valve body 41 does not completely close the intake port 23, as shown in FIG. A minute gap 42 is formed between the free end of the second valve body 41 and the inner surface of the top plate 21 of the cap body 11, and the intake port 23 and the communication flow path 38 communicate with each other through the minute gap 42. ..

As shown in FIGS. 1 and 2, an accommodating portion 45 for accommodating the first valve body 33 and an pouring flow path 46 communicating from the accommodating portion 45 to the spout 13 are formed in the pouring cylinder 12. Has been done. The diameter d of the pouring flow path 46 is smaller than the diameter D of the accommodating portion 45.

An arcuate guide surface 48 for guiding the content liquid 47 that has flowed from the inner cylinder portion 29 through the distribution hole 35 to the accommodating portion 45 in the injection cylinder 12 to the discharge flow path 46 is formed in the injection cylinder 12. Has been done. As a result, the inner diameter of the dispensing cylinder 12 is gradually reduced from the accommodating portion 45 toward the dispensing flow path 46.

The operation in the above configuration will be described below.
As shown in FIG. 1, the lid 14 is opened, the double container 1 is pressed (squeezed) to deform the outer container 3, and the pressure 37 between the inner container 2 and the outer container 3 is higher than the atmospheric pressure. Then, as shown in FIG. 13, the second valve body 41 presses against the inner surface of the top plate portion 21 of the cap body 11 to close the intake port 23, so that the internal pressure of the double container 1 rises and the first The opening position O (virtual line in FIG. 2) in which the valve body 33 bulges into the pouring cylinder 12 in a convex shape from the closed position S (see the solid line in FIG. 2) that retracts into the inner cylinder portion 29 in a concave shape. See). As a result, the inside of the inner cylinder portion 29 and the inside of the pouring cylinder 12 communicate with each other through the flow hole 35 of the first valve body 33, and the content liquid 47 in the inner container 2 is discharged from the inside of the inner cylinder portion 29. It flows into the pouring cylinder 12 through the distribution hole 35 and is poured out from the pouring outlet 13.

At this time, as shown in FIG. 8, in the middle of the deformation of the first valve body 33 from the closed position S to the open position O, the space between the inner cylinder portion 29 and the inside of the pouring cylinder 12 is the first. The state of being shut off by the valve body 33 is maintained, and as shown in FIG. 9, when the first valve body 33 reaches the open position O, the inside of the inner cylinder portion 29 and the inside of the pouring cylinder 12 flow. It communicates through the hole 35. Therefore, when the double container 1 is pressed, the time required for the first valve body 33 to reach the open position O from the closed position S is delayed by the time required to reach the inner cylinder portion 29 and the inside of the pouring cylinder 12. The space communicates with each other through the distribution hole 35.

As a result, a time lag (delay) occurs between the pressing operation of the double container 1 and the time when the content liquid 47 in the inner container 2 is poured out from the spout 13, so that the double container 1 There is a time margin from the pressing operation until the content liquid 47 is poured out from the spout 13, and it is possible to prevent the content liquid 47 from being suddenly poured out from the spout 13.

At this time, the content liquid 47 in the inner container 2 flows from the inner cylinder portion 29 through the distribution hole 35 to the accommodating portion 45 in the pouring cylinder 12, and is guided by the guide surface 48 from the accommodating portion 45. It is smoothly collected in the pouring flow path 46, flows through the pouring flow path 46, and is poured out from the pouring outlet 13. As a result, the content liquid 47 is radially poured out from the pouring outlet 13 without disturbing the flow of the content liquid 47 in the pouring cylinder 12.

Further, when the pressing operation of the double container 1 is released, the outer container 3 is restored to the original shape before the pressing operation, and the pressure between the inner container 2 and the outer container 3 becomes lower than the atmospheric pressure, the figure shows. As shown in 14, the second valve body 41 opens the intake port 23 apart from the inner surface of the top plate portion 21 of the cap body 11. Therefore, the atmosphere is introduced from the intake port 23 through the communication flow path 38 into the space 37 between the inner container 2 and the outer container 3, and as shown in FIGS. 10 and 11, the first valve body 33 is noted. The open position S that bulges into the outlet cylinder 12 in a convex shape is transformed into the closed position S that retracts into the inner cylinder portion 29 in a concave shape, and the space between the inner cylinder portion 29 and the inside of the pouring cylinder 12 is changed. It is shut off by the first valve body 33.

As described above, when the first valve body 33 is closed, the first valve body 33 is greatly deformed from the convex shape to the concave shape in the vertical direction, and therefore remains in the pouring cylinder 12 as shown in FIG. The liquid level 47a of the content liquid 47 is drawn into the back (downward) of the dispensing cylinder 12 by the volume integral corresponding to the deformation amount B (see FIG. 2) of the first valve body 33. As a result, the content liquid 47 remaining in the pouring cylinder 12 can be prevented from reaching the pouring outlet 13 of the pouring cylinder 12, and the suction back (suction) effect on the content liquid 47 is exhibited.

Further, the intake port 23 and the communication flow path 38 are formed at one position in the circumferential direction of the cap body 11, and the base end portion of the second valve body 41 is provided in the second support cylinder 40, and the second valve is provided. Since the free end portion of the body 41 can be pressure-welded and separated from the inner surface of the cap body 11, the second valve body 41 reacts sensitively to the pressure change of 37 between the inner container 2 and the outer container 3. The intake port 23 can be opened and closed quickly.

Further, the double container 1 is not pressed, and the outer container 3 is not deformed in the normal state (the pressing operation of the double container 1 is released, and the outer container 3 is restored to the original shape before the pressing operation. In this state, as shown in FIG. 12, since the intake port 23 and the communication flow path 38 communicate with each other through the minute gap 42, for example, the inside of the double container 1 becomes hotter than the outside, and the contents Even if the air 37 between the vessel 2 and the outer container 3 thermally expands, the thermally expanded air flows out from the communication flow path 38 through the minute gap 42 to the intake port 23 and is discharged from the intake port 23 to the outside. Will be done. As a result, in the above-mentioned normal time, the pressure inside the double container 1 and the pressure outside are balanced through the minute gap 42. Therefore, the air 37 between the inner container 2 and the outer container 3 thermally expands and the pressure inside the double container 1 rises, and even though the double container 1 is not pressed, the inside of the double container 1 is not pressed. It is possible to prevent the liquid level of the content liquid 47 from rising.

(Second Embodiment)
In the second embodiment, as shown in FIG. 15, the first valve body 33 has an annular protrusion 60 that is pressure-welded to the other end of the inner cylinder portion 29 at the closed position S over the entire circumference. ing. Each flow hole 35 is located outside the protrusion 60 in the radial direction of the first valve body 33.

As shown in FIG. 15, when the first valve body 33 is in the closed position S, the protrusion 60 presses against the other end of the inner cylinder 29, and the inside of the inner cylinder 29 and the inside of the pouring cylinder 12 are brought into contact with each other. The space is cut off by the first valve body 33. Further, as shown in FIG. 17, when the first valve body 33 is in the open position O, the protrusion 60 is separated from the other end of the inner cylinder 29, and the inside of the inner cylinder 29 and the inside of the pouring cylinder 12 are separated. Communicats with and through the flow hole 35 of the first valve body 33. Further, as shown in FIG. 16, when the first valve body 33 is in the process of being deformed from the closed position S to the open position O, the protrusion 60 presses against the other end of the inner cylinder portion 29. A state in which the inside of the inner cylinder portion 29 and the inside of the injection cylinder 12 are blocked by the first valve body 33 is maintained.

The operation in the above configuration will be described below.
When the lid 14 is opened and the double container 1 is pressed, the first valve body 33 is in the process of being deformed from the closed position S (see FIG. 15) to the open position O (see FIG. 17). As shown, the protruding portion 60 is in pressure contact with the other end of the inner cylinder portion 29, and the state in which the inside of the inner cylinder portion 29 and the inside of the dispensing cylinder 12 are blocked by the first valve body 33 is maintained. Then, as shown in FIG. 17, when the first valve body 33 reaches the open position O, the protrusion 60 is separated from the other end of the inner cylinder portion 29, and the inside of the inner cylinder portion 29 and the pouring cylinder 12 are separated from each other. It communicates with the inside through the flow hole 35 of the first valve body 33. Therefore, when the double container 1 is pressed, the time required for the first valve body 33 to reach the open position O from the closed position S is delayed by the time required to reach the inner cylinder portion 29 and the inside of the pouring cylinder 12. The space communicates with each other through the distribution hole 35.
As a result, a time lag (delay) occurs between the pressing operation of the double container 1 and the time when the content liquid 47 in the inner container 2 is poured out from the spout 13, so that the double container 1 There is a time margin from the pressing operation until the content liquid 47 is poured out from the spout 13, and it is possible to prevent the content liquid 47 from being suddenly poured out from the spout 13.

Further, by releasing the pressing operation of the double container 1, the first valve body 33 is deformed from the open position O to the closed position S, and as shown in FIG. 15, the protruding portion 60 is other than the inner cylinder portion 29. The inside of the inner cylinder portion 29 and the inside of the injection cylinder 12 are cut off by the first valve body 33 by pressure contacting the end portion. As a result, the space between the first valve body 33 and the other end of the inner cylinder portion 29 is surely sealed, and the air that has entered the injection cylinder 12 is not included in the first valve body 33 and the inner cylinder portion 29. It is possible to reliably prevent the inner container 2 from entering the inner container 2 from between the end portion.

As shown in FIG. 15, at the closed position S, the protrusion 60 presses against the other end of the inner cylinder 29 in a state close to line contact, so that the pressure contact force per unit area becomes high and the sealing performance is improved. It is improved and sufficient blocking performance is secured. Further, it is possible to reduce the force of the pressing operation required to deform the first valve body 33 from the closed position S to the open position O by pressing the double container 1.

In each of the above embodiments, as shown in FIGS. 2 and 15, the guide surface 48 is formed as an arcuate surface, but it may be formed as a tapered surface.

1 Double container 2 Inner container 3 Outer container 4 Port 5 Cap 11 Cap body 12 Outlet cylinder 13 Outlet 14 Lid 15 Inner plug 23 Intake port 29 Inner cylinder (communication part)
30 End opening 31 First internal valve 32 Second internal valve 33 First valve body 35 Flow hole 37 Between inner container and outer container 38 Communication flow path 40 Second support cylinder (support member)
41 Second valve body 45 Containment part 46 Injection flow path 47 Contents liquid 48 Guide surface 60 Protrusion part A Closing direction S Closed position O Open position

Claims (5)

A cap attached to the mouth of a double container having a deformable inner container and an outer container.
The cap body that is fitted to the mouth of the double container and
The dispenser provided on the cap body and
A lid that opens and closes the spout that opens at the tip of the spout cylinder,
An inner plug provided inside the cap body and fitted into the mouth of the double container,
It has a first internal valve provided inside the cap body and has
The inner plug has an inner cylinder portion in which one end communicates with the inside of the inner container and the other end communicates with the inside of the pouring cylinder .
The first internal valve has a first valve body that covers the other end opening of the inner cylinder portion .
A flow hole is formed in the first valve body,
The first valve body is deformable into an open position that bulges in a convex shape in the pouring cylinder and a closed position that dents in a concave shape toward the inside of the inner cylinder portion, and is urged in the closing direction. ,
When the first valve body is in the closed position, the inside of the inner cylinder and the inside of the pouring cylinder are blocked by the first valve body.
When the first valve body is in the open position, the inside of the inner cylinder and the inside of the pouring cylinder communicate with each other through the flow hole of the first valve body.
When the first valve body is in the process of being deformed from the closed position to the open position, the inside of the inner cylinder and the inside of the injection cylinder are in a state of being bulged before reaching the open position and in the injection cylinder. A cap characterized in that the space is maintained in a state of being blocked by the first valve body. An accommodating portion for accommodating the first valve body and a pouring flow path communicating from the accommodating portion to the spout are formed in the pouring cylinder.
The diameter of the injection channel is smaller than the diameter of the accommodating part,
A plurality of flow holes are formed on the circumference of the first valve body facing the other end of the inner cylinder portion.
The first aspect of claim 1, wherein a guide surface for guiding the content liquid flowing from the inner cylinder portion through the flow hole to the accommodating portion in the injection cylinder to the injection flow path is formed in the injection cylinder. cap. The first valve body has a protrusion that is in pressure contact with the other end of the inner cylinder portion over the entire circumference in the closed position.
The flow hole is located outside the protrusion in the radial direction of the first valve body.
When the first valve body is in the closed position, the protrusion is pressed against the other end of the inner cylinder portion, and the inside of the inner cylinder portion and the inside of the pouring cylinder are cut off by the first valve body.
When the first valve body is in the open position, the protrusion is separated from the other end of the inner cylinder portion, and the inside of the inner cylinder portion and the inside of the pouring cylinder communicate with each other through the flow hole of the first valve body. And
When the first valve body is in the process of being deformed from the closed position to the open position, the protrusion is pressed against the other end of the inner cylinder portion, and the space between the inner cylinder portion and the pouring cylinder portion is the first. The cap according to claim 1 or 2, wherein the state of being shut off by the valve body of the above is maintained . A cap attached to the mouth of a double container having a deformable inner container and an outer container.
The cap body that is fitted to the mouth of the double container and
The dispenser provided on the cap body and
A lid that opens and closes the spout that opens at the tip of the spout cylinder,
An inner plug provided inside the cap body and fitted into the mouth of the double container,
It has a first internal valve provided inside the cap body and has
The inner plug has a communication part that communicates with the inside of the inner container and the inside of the pouring cylinder.
The first internal valve has a first valve body that covers the communication part of the inner plug.
A flow hole is formed in the first valve body,
The first valve body can be deformed into an open position that bulges into the pouring cylinder and a closed position that retracts in the direction opposite to the open position, and is urged in the closed direction.
When the first valve body is in the closed position, the communication portion of the inner plug and the dispensing cylinder are blocked by the first valve body.
When the first valve body is in the open position, the communication portion of the inner plug and the pouring cylinder communicate with each other through the flow hole of the first valve body.
When the first valve body is in the process of being deformed from the closed position to the open position, before reaching the open position and in a state of bulging into the injection cylinder, the communication portion of the inner plug and the injection cylinder The state where the space is blocked by the first valve body is maintained,
An intake port for sucking outside air between the inner container and the outer container is formed on the cap body.
Inside the cap body, a communication flow path that communicates between the intake port and the inner container and the outer container, and a second internal valve that opens and closes the intake port are provided.
The second internal valve has a support member fixed between the cap body and the inner plug, and an elastically deformable second valve body provided on the support member.
The base end of the second valve body is provided on the support member and
When the pressure between the inner container and the outer container becomes higher than the atmospheric pressure, the free end of the second valve body presses against the inner surface of the cap body to close the intake port.
When the pressure between the inner container and the outer container becomes lower than the atmospheric pressure, the free end of the second valve body separates from the inner surface of the cap body and opens the intake port.
When the pressure between the inner container and the outer container is the same as the atmospheric pressure, a minute gap is formed between the free end of the second valve body and the inner surface of the cap body.
A cap characterized in that the intake port and the communication flow path communicate with each other through a minute gap . The intake port and the communication flow path are formed at one place in the circumferential direction of the cap body.
The cap according to claim 4, wherein the second internal valve is integrally formed with the first internal valve .

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