JP2019116313A - Discharge container - Google Patents

Abstract

To suppress incursion of external air into a container body even for a highly viscous content.SOLUTION: A discharge container 1 is provided with: a container body 4 that includes an inner container 2 and an outer container 3; a discharge cap 7 that has an outlet 6; an inner plug member 9 that has a communication cylinder 8 for communicating the inside of the inner container with the outlet; and a check valve 10 that permits movement of a content through the inside of the communication cylinder to the outlet, and suppresses flowing-in of external air. The check valve is provided with a first valve 80 and a second valve 90 disposed closer to the outlet side than the first valve. The second valve is provided with a valve body 92 that defines a first space R1 between itself and the first valve, defines a second space R2 between itself and the outlet, and closes the upper opening of the communication cylinder so as to be movable toward the outlet side, and a biasing part 93 that biases the valve body moved to the outlet side toward the inner container side. The valve body is provided with a shaft body 94 that is stored in the communication cylinder and that increases a volume inside the first space while reducing a volume inside the second space when the valve body moves toward the outlet side.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a dispensing container.

DESCRIPTION OF RELATED ART Conventionally, the discharge container which mounted | worn the discharge cap provided with the discharge port in the opening part of the container main body which accommodates the content is known. For example, there is known a discharge container which can discharge the contents contained in the container body from the discharge port by a desired amount by squeezing the body of the container body.
A discharge container of this type usually allows discharge of contents from the inside of the container body to the outside through the discharge port, and reverses the flow of contents or outside air into the container body from the outside through the discharge port. It has a stop valve structure.

  For example, as shown in Patent Document 1 below, a container main body configured as a double container in which a volume-deformable inner layer (inner container) is accommodated inside the outer layer (outer container), and a discharge cap There is known a discharge container provided with a check valve (discharge valve) of a slit valve structure provided between the stopper and the stopper.

  According to this discharge container, after the contents are discharged by squeezing the body portion of the container body, when the squeeze deformation is released, the outer layer body begins to elastically deform. At this time, the check valve suppresses the inflow of contents or outside air into the container body (inner layer body) through the discharge port, and between the outer layer body and the inner layer body through the intake hole formed in the discharge cap. Outside air is introduced. Therefore, it is possible to restore and deform the outer layer body to the original shape while reducing the volume deformation of the inner layer body. As a result, it is possible to suppress the contact between the contents remaining in the container body and the outside air, and to suppress the deterioration, deterioration, etc. of the contents.

JP, 2013-95455, A

By the way, although a discharge container is used for the use which stores liquid contents, such as soy sauce and cosmetics, in many cases, for example, a relatively high-viscosity content containing some solid substances, such as sauce and miso, is stored. There is a demand to apply to applications.
However, in the above-mentioned conventional discharge container, since the check valve is constituted by a single slit valve, when the content is discharged, for example, a high viscosity content or solid is caught in the slit valve or the like. If it does not close, outside air may intrude into the container body through the slit valve, which may cause deterioration or deterioration of the contents.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a discharge container capable of suppressing the entry of external air into the container body even if the content is high in viscosity. It is.

(1) In the discharge container according to the present invention, an inner container capable of reducing the volume and containing the contents is accommodated, and the inner container is internally provided, and an intake hole for suctioning external air is formed between the inner container and the inner container. A container body provided with an elastically deformable outer container, a discharge cap mounted on the mouth of the container body and having a discharge port, and a communicating cylindrical portion communicating the inside of the inner container with the discharge port; A plug member disposed inside the mouth of the container body, and allowing movement of contents from the inside of the inner container to the discharge opening through the inside of the communication cylinder, and the discharge opening and the discharge opening And a check valve for suppressing the inflow of outside air into the inner container through the inside of the communication cylinder, the check valve being a lower opening located on the inner container side of the communication cylinder. A first valve that opensably closes the valve, and is disposed closer to the discharge port than the first valve, and A second valve that openably closes an upper opening located on the discharge port side in the communication cylinder, the second valve being capable of storing contents between the first valve and the second valve; A valve body defining a space and defining a second space communicating with the discharge port with the discharge port, and closing the upper opening movably toward the discharge port side; And a biasing unit configured to bias the valve body moved to the discharge port toward the inner container, and the valve body is at least partially accommodated in the communication cylinder, and The valve body is characterized by including a shaft which increases the volume in the first space and decreases the volume in the second space when the valve body moves toward the discharge port.

  According to the discharge container of the present invention, when the outer container is pressed and squeezed (elastically deformed) inside the container, the inner container is reduced in volume due to the squeeze deformation, so the internal pressure of the inner container rises. Thus, the first valve can be opened, and the contents can be pushed out of the inner container and moved into the first space. Further, the valve main body can be moved toward the discharge port side, and the upper end opening of the communication cylinder can be opened to open the second valve. Therefore, the content pushed out from the inside of the inner container can be moved from the inside of the first space to the outlet through the inside of the second space, and can be discharged to the outside through the outlet.

When the pressure on the outer container is released after the content is discharged, the increase in internal pressure in the inner container is stopped or the internal pressure is decreased, so the first valve is closed and the valve main body is biased by the biasing portion. Since it moves to the side and closes the upper end opening of the communication cylinder, the second valve can be closed. Thereby, the inflow of air (outside air) into the inner container through the inside of the discharge port and the communicating cylindrical portion can be suppressed, and the content remaining in the inner container is made less likely to come into contact with the air. Can be suppressed.
When the pressure on the outer container is released, the outer container begins to elastically deform and deform, so that a negative pressure is generated between the inner and outer containers. As a result, the outside air can be sucked between the inner container and the outer container through the intake port, and the outer container can be restored and deformed to the original state while maintaining the inner container in a state of reduced volume deformation. .

  By the way, when discharging the contents, the contents pushed out from the inner container pass through the first valve and enter the first space, and then pass through the second valve and enter the second space. The ink is discharged from the discharge port to the outside. Therefore, when the first valve and the second valve are closed, a part of the contents remaining without being discharged can be stored in the first space. And the contents itself which accumulated in the 1st space can be functioned as what is called a filling seal. Therefore, for example, even when the second valve does not close due to the high viscosity content, the filling seal can be used to suppress the outside air from flowing into the inner container. In particular, the higher the viscosity of the contents, the better the sealability of the filling seal.

  Furthermore, when discharging the contents, the shaft body of the valve body moves from the inside of the communication cylinder to the second space side as the valve body moves to the discharge port side. Thereby, the volume in the first space can be increased and the volume in the second space can be decreased. Then, after the contents are discharged, the shaft of the valve main body restores and moves from the second space side into the communicating cylindrical portion in accordance with the closing of the second valve, so that the inside of the first space is reversed contrary to the above. The volume can be reduced and the volume in the second space can be increased. Therefore, negative pressure can be provided in the second space, and the contents around the discharge port can be drawn into the second space or the first space side by the suck back effect accompanying the return movement of the shaft. As a result, the contents are unlikely to remain around the discharge port, the discharge port can be maintained in a clean state, and dripping of contents can be effectively prevented.

(2) The first valve may be a slit valve.

  In this case, after discharge of the contents, the slit can be closed immediately to close the valve when the rise of the internal pressure of the inner container is stopped or the internal pressure is lowered, so that the contents can be further reduced in the first space. It can be reliably stored, and it is easy to exhibit the function as a filling seal. Therefore, the outside air can be more reliably suppressed from flowing into the inner container.

(3) A part of the shaft body may be accommodated in the communication cylinder when the valve body moves toward the discharge port.

  In this case, when the valve body moves toward the discharge port and the second valve is opened, a part of the shaft can be retained in the communication cylinder, so The 2 valve can be moved with less clatter and stable. As a result, switching between opening and closing of the second valve can be smoothly performed.

(4) The valve main body is formed to project radially outward from the shaft body, and the discharge port side of the communication cylinder with respect to the upper end opening edge located on the discharge port side And an annular seal flange portion movably contacting toward the

  In this case, the seal flange portion can be used to close the upper end opening of the communicating cylindrical portion more stably and releasably, and the sealing performance of the second valve can be further improved.

  According to the discharge container according to the present invention, it is possible to suppress the entry of the outside air into the container body even if the content is high in viscosity.

It is a longitudinal cross-sectional view which shows embodiment of the discharge container which concerns on this invention. It is a longitudinal cross-sectional view which shows the state which is opening the 2nd valve, after carrying out open operation of the lid cap around a hinge part from the state shown in FIG.

Hereinafter, an embodiment of a discharge container according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the discharge container 1 of the present embodiment is provided with an inner container 2 which contains contents not shown and is capable of volume reduction deformation (deflection deformation) and an inner container 2 rich in flexibility. The bottomed cylindrical container main body 4 having the outer container 3 and the discharge cap 7 mounted on the opening 5 of the container main body 4 and having the discharge port 6 communicate with the inside of the inner container 2 and the discharge port 6 An inner plug member 9 having a cylindrical portion 8 and disposed inside the mouth 5 of the container main body 4 and movement of contents from the inside of the inner container 2 to the discharge port 6 through the inner side of the communication cylindrical portion 8 A non-return valve 10 is provided, which permits and prevents the flow of outside air into the inner container 2 through the inside of the discharge port 6 and the communicating cylindrical portion 8.

  In addition, the contents are not particularly limited, and examples thereof include cosmetic liquid, liquid food (condiment liquid, soy sauce, vinegar, etc.), cleaning liquid, liquid medicine and the like. In particular, it is possible to suitably use relatively high viscosity contents including some solids, including pasta sauce, sauces such as pizza sauce, ketchup, mayonnaise, and liquid seasonings such as miso. It is.

  In this embodiment, the central axis of the container body 4 is referred to as the container axis O, the side of the discharge port 6 along the container axis O is referred to as the upper side, and the opposite side is referred to as the lower side. Further, in a plan view seen from the container axis O direction, a direction intersecting the container axis O is referred to as a radial direction, and a direction circling around the container axis O is referred to as a circumferential direction.

The container body 4 is formed, for example, by blow molding, and is a laminated peelable container (delaminated bottle) in which the inner container 2 is peelably stacked on the inner surface of the outer container 3.
As the blow molding, for example, the laminated parison combined in a double (inner and outer) by extrusion molding or the like may be formed, and the container body 4 may be formed by extrusion blow molding the laminated parison. Further, a preform for the outer container 3 and a preform for the inner container 2 are formed by injection molding or the like, and after combining these in duplicate (inside and outside), the container body 4 is biaxially stretched and blow molded. It may be formed.
Furthermore, after the preform for the outer container 3 is first biaxially stretch blow molded to form the outer container 3, the preform for the inner container 2 is disposed inside, and then the preform for the inner container 2 is The container body 4 may be formed by biaxial stretch blow molding.
Furthermore, after the laminated preform is formed, the container body 4 may be formed by subjecting the laminated preform to biaxial stretch blow molding. Furthermore, after the inner container 2 and the outer container 3 are separately molded, they may be combined.

  The material of the inner container 2 and the outer container 3 is a synthetic resin material, and may be the same material or different materials as long as the inner container 2 can be independently reduced in volume with respect to the outer container 3. As an example of a synthetic resin material, PET (polyethylene terephthalate), PP (polypropylene), PE (polyethylene), nylon (polyamide), EVOH (ethylene-vinyl alcohol copolymer) etc. are mentioned, for example. Out of these synthetic resin materials, the outer container 3 and the inner container 2 are formed in a combination that can be peeled off.

The container main body 4 is formed in a bottomed cylindrical shape in which the mouth 5, the shoulder 11, the body, and the bottom are sequentially provided from the upper side. The body and the bottom are not shown in the drawings.
The outer container 3 is made squeeze deformable (elastically deformable), and the inner container 2 is deformed so as to be squeezed as the outer container 3 squeezes. Therefore, at least a portion of the outer container 3 located on the trunk portion is elastically deformable radially inward (inside of the container).

The mouth 5 of the container body 4 is configured by stacking the mouth 2 a of the inner container 2 and the mouth 3 a of the outer container 3. In the illustrated example, the mouth 5 of the container main body 4 extends upward from the upper end of the shoulder 11 and is formed in a cylindrical shape having a diameter smaller than that of the shoulder 11.
The upper end of the mouth 2 a of the inner container 2 is annularly folded back in the radial direction, and the folded portion is disposed at the upper opening edge of the mouth 3 a of the outer container 3. Therefore, the mouth 3 a of the outer container 3 is closed by the inner container 2.

  A first screw portion 12 (for example, a male screw portion) is formed on the outer peripheral surface of the opening 3 a of the outer container 3. Furthermore, air (outside air) is introduced between the outer container 3 and the inner container 2 through the first air introduction hole 45 and the second air introduction hole 46 described later between the outer container 3 and the inner container 2. An intake hole 13 is formed.

However, the formation position of the intake hole 13 is not limited to the opening 3 a of the outer container 3, and may be formed, for example, on the trunk or bottom of the outer container 3 other than the opening 3 a. In this case, the air may be directly suctioned between the inner container 2 and the outer container 3 through the intake hole 13. When configured in this manner, the first air introduction hole 45 and the second air introduction hole 46 become unnecessary.
Further, for example, in the case where the intake hole 13 is formed in the trunk of the outer container 3, the air introduction valve 100 described later is disposed in the trunk of the outer container 3, and the inner container 2 passes through the intake hole 13 by the air introduction valve 100. It may be configured to allow the flow of air between the inner container 2 and the outer container 3 and to control the flow of air from between the inner container 2 and the outer container 3 through the air inlet 13.

  Air grooves 14 extending in the vertical direction are formed on the outer peripheral surface of the opening 3 a of the outer container 3 at intervals in the circumferential direction. The air groove 14 is mainly formed on the upper side of the intake hole 13.

The discharge cap 7 has a cylindrical mounting cap 20 mounted to the mouth 5 of the container body 4 and a cylindrical cap main body 30 disposed above the mounting cap 20 and mounted to the mounting cap 20. And is arranged coaxially with the container axis O.
In the present embodiment, the mounting cap 20 and the cap main body 30 are separately provided. However, the present invention is not limited to this case. For example, the mounting cap 20 and the cap main body 30 may be integrally formed.

  The mounting cap 20 projects from the upper end of the first outer cylinder 21 radially inward from the first outer cylinder 21 that surrounds the mouth 5 of the container main body 4 from the outer side in the radial direction. An annular connection wall 22 is in contact with the upper end opening edge of the opening 5 from above, and a connection cylinder 23 extending upward from the upper end of the first outer cylinder 21.

The first outer shell cylinder 21 extends downward from the mouth 5 of the container body 4 and is closely fitted to the upper end of the shoulder 11 of the container body 4. Thus, the intake hole 13 is prevented from communicating with the outside of the discharge container 1 through the gap between the first outer cylindrical portion 21 and the shoulder portion 11.
A second screw portion 24 (for example, a female screw portion) screwed to the first screw portion 12 is formed on the inner peripheral surface of the first outer shell cylinder 21. The mounting cap 20 is detachably mounted on the opening 5 of the container main body 4 by screwing the second screw portion 24 to the first screw portion 12.
However, the mounting method of the mounting cap 20 is not limited to screwing. For example, the mounting cap 20 may be mounted by undercut fitting to the opening 5 of the container body 4.

At the inner peripheral edge portion of the connection wall portion 22, a first inner plug member 60 described later is integrally formed. However, the first inside plug member 60 is not limited to the case where it is integrally formed with the connection wall portion 22, and may be formed separately from the connection wall portion 22, for example.
The outer diameter of the connecting cylindrical portion 23 is smaller than the outer diameter of the first outer cylindrical portion 21. A first engaging protrusion 25 is formed on the outer peripheral surface of the connecting cylindrical portion 23 so as to protrude radially outward. For example, a plurality of first engagement protrusions 25 may be formed at intervals in the circumferential direction, or may be formed in an annular shape extending over the entire circumference of the connection cylindrical portion 23.

  The cap body 30 projects radially inward from the upper end portion of the second outer shell 31 and a second outer shell 31 surrounding the connection cylindrical portion 23 of the mounting cap 20 from the outer side in the radial direction. An annular outer flange portion 32 contacting from above with respect to the upper end opening edge, and a seal cylindrical portion 33 extending downward from the inner peripheral edge portion of the outer flange portion 32 and closely fitted to the inside of the connection cylindrical portion 23 And an annular inner flange 34 protruding radially inward from the seal cylinder 33, and a discharge cylinder 35 extending upward from the inner peripheral edge of the inner flange 34.

The second outer cylindrical portion 31 is formed in a cylindrical shape whose outer diameter is substantially the same as the outer diameter of the first outer cylindrical portion 21 and is formed so as to protrude above the connecting cylindrical portion 23 . The lower end portion of the second outer shell cylinder portion 31 is in contact with the upper end opening edge of the first outer shell cylinder portion 21 from above.
A second engagement protrusion 36 is formed on the inner peripheral surface of the second outer shell cylinder 31 so as to protrude radially inward and engage with the first engagement protrusion 25 from below. The second engagement protrusions 36 may be formed, for example, in the circumferential direction at intervals corresponding to the first engagement protrusions 25. The second engagement protrusions 36 may extend annularly along the entire circumference of the second outer shell 31. It may be formed.
The cap body 30 is combined with the cap body 30 by the engagement (undercut fitting) of the second engagement projection 36 with the first engagement projection 25.

  At the inner peripheral edge of the outer flange portion 32, a third engagement protrusion 37 projecting upward is formed. The third engagement projection 37 is formed in an annular shape, and is formed in a tapered shape in cross section extending radially outward as it goes upward.

The inner flange portion 34 is formed with a first support cylindrical portion 38 and a second support cylindrical portion 39 which extend downward.
The first support cylindrical portion 38 is formed to extend downward from the inner peripheral edge portion of the inner flange portion 34. In the illustrated example, the first support cylinder 38 is formed to project downward below the seal cylinder 33. The second support cylindrical portion 39 is formed so as to surround the first support cylindrical portion 38 from the outer side in the radial direction in a state where a gap is formed between the second support cylindrical portion 39 and the first support cylindrical portion 38. Thus, an annular space opened downward is formed between the first support cylindrical portion 38 and the second support cylindrical portion 39. In the illustrated example, the lower end portion of the second support cylindrical portion 39 is located above the lower end portion of the first support cylindrical portion 38 and the lower end portion of the seal cylindrical portion 33.
An annular space opened downward is also formed between the second support cylinder 39 and the seal cylinder 33.

  The discharge tubular portion 35 is directed radially inward as it extends upward from the upper end portion of the first tubular portion 40 and the straight first tubular portion 40 extending upward from the inner peripheral edge portion of the inner flange portion 34. And a straight third cylindrical portion 42 extending upward from the upper end of the second cylindrical portion 41, and upward from the upper end of the third cylindrical portion 42. And a fourth cylindrical portion 43 which is tapered in cross section and extends radially outward as it goes.

  The inner diameter of the first cylindrical portion 40 is formed to be substantially the same as the inner diameter of the first support cylindrical portion 38. The upper end portion of the first cylindrical portion 40 is located above the outer flange portion 32 and is located lower than the upper end portion of the third engagement protrusion 37. However, the present invention is not limited to this case. For example, the first cylindrical portion 40 may be formed so as to protrude above the third engagement projection 37.

The second cylindrical portion 41 is formed so as to gradually reduce in diameter toward the upper side as described above. Therefore, the inner diameter of the third cylindrical portion 42 is smaller than the inner diameter of the first cylindrical portion 40. The inner side of the third cylindrical portion 42 mainly functions as the discharge port 6.
The fourth cylindrical portion 43 is formed to gradually expand in diameter as it goes upward as described above. Therefore, it is designed to be easy to discharge the contents discharged from the discharge port 6 to the outside by using the fourth cylindrical portion 43.

A first air introduction hole 45 is formed in the cap body 30 configured as described above, and a second air introduction hole 46 communicating with the first air introduction hole 45 is formed in the mounting cap 20. .
The first air introduction hole 45 is formed so as to vertically penetrate a portion of the inner flange portion 34 located between the seal cylindrical portion 33 and the second support cylindrical portion 39. In the example of illustration, although the 1st air introduction hole 45 is formed in one place, you may open a space | interval in the circumferential direction, for example, and may form it in multiple numbers.
The second air introduction hole 46 is formed to penetrate the connection wall 22 up and down. The second air introduction hole 46 communicates with the first air introduction hole 45 and also communicates with the air intake hole 13 via the air groove 14. Thereby, air can be introduced from the outside between the inner container 2 and the outer container 3 through the first air introduction hole 45, the second air introduction hole 46, the air groove 14 and the air intake hole 13. .

Furthermore, a top cylindrical lid cap 50 is connected to the cap body 30 via a hinge portion 47.
The lid cap 50 surrounds the discharge cylindrical portion 35 from the outer side in the radial direction, and covers the cap peripheral wall 51 overlapping the outer flange portion 32 and the upper end opening of the cap peripheral wall 51 and covering the discharge cylindrical portion 35 from above And a ceiling wall 52, and is disposed coaxially with the container axis O.

  The cap peripheral wall 51 is formed in a tubular shape having an outer diameter substantially equal to the outer diameter of the second outer cylindrical portion 31. An inner circumferential surface on the lower end portion side of the cap circumferential wall 51 protrudes radially inward and an annular fourth engagement engaged from below with the third engagement projection 37 formed on the cap main body 30. An alignment projection 53 is formed. Thus, the lid cap 50 is detachably attached to the cap body 30.

The hinge portion 47 is formed to connect the lower end portion of the cap peripheral wall 51 and the upper end portion of the second outer cylindrical portion 31. Thus, the lid cap 50 is rotatable around the hinge portion 47, and can be detached from the cap body 30 by this rotation.
At the lower end portion of the portion of the cap peripheral wall 51 opposite to the hinge portion 47 with the container axis O interposed therebetween, an operation projecting piece 54 protruding outward in the radial direction is formed.

The cap top wall 52 is formed with a plug 55 extending downward. The plug 55 is disposed coaxially with the container axis O, and is inserted from above into the third cylindrical portion 42 of the discharge cylindrical portion 35, and closely fitted to the inside of the third cylindrical portion 42 in a detachable manner. It is done. Thus, the discharge port 6 is sealed by the plug 55.
In the example of illustration, although the plug 55 is formed in a cylindrical shape, it is not limited in this case, For example, you may form the plug 55 in solid cylindrical shape.

  The inside plug member 9 includes a first inside plug member 60 integrally formed on the mounting cap 20, and a second inside plug member 70 releasably combined with the first inside plug member 60. .

  The first inner plug member 60 extends downward from the inner peripheral edge of the connection wall 22 in the mounting cap 20 and further includes a seal cylinder 61 closely fitted to the inside of the container body 4, and the seal cylinder 61 An annular inner plug that radially connects the bottomed cylindrical first inner plug body 62 disposed radially inward and the lower end portion of the seal cylinder 61 and the peripheral wall 62a of the first inner plug body 62 in the radial direction. A connecting portion 63 is provided coaxially with the container axis O.

  The first inner plug member 60 is integrally formed with the mounting cap 20 as described above by forming the seal cylinder 61 integrally with the connection wall 22. However, the present invention is not limited to this case, and the first inner plug member 60 may be formed separately from the mounting cap 20.

The upper end portion of the seal cylinder portion 61 closely fits inside the mouth portion 5 of the container main body 4, and the lower end portion is positioned above the intake hole 13.
The peripheral wall 62 a of the first middle stopper body 62 is formed to have a diameter smaller than that of the seal cylinder portion 61. A communication hole 64 penetrating the bottom wall 62 b in the vertical direction is formed coaxially with the container axis O in the bottom wall 62 b of the first middle stopper body 62. The upper end portion of the peripheral wall 62 a of the first inner plug body 62 is located below the connection wall portion 22 and above the lower end portion of the seal cylinder 61. Therefore, between the peripheral wall 62a of the first inner plug body 62, the inner plug connection portion 63, and the seal cylinder portion 61, an annular storage space opened upward is formed.

  The second inner plug member 70 projects radially outward from the communication cylindrical portion 8 disposed inside the peripheral wall 62 a of the first inner plug body 62, and from the upper end portion of the communication cylindrical portion 8. An annular flange 71 in contact with the upper end opening edge of the peripheral wall 62a of the inner plug body 62 from above, and a lower peripheral wall 62a of the first inner plug body 62 projecting downward from the outer peripheral edge of the flange 71 And a mounting cylindrical portion 72 that radially surrounds the container from the outside in the radial direction, and is disposed coaxially with the container axis O.

  The mounting cylindrical portion 72 is mounted to the peripheral wall 62 a of the first inner plug body 62 in a state where the mounting cylindrical portion 72 is disposed in the housing space described above. In the illustrated example, the mounting tube portion 72 is undercut fitted to the peripheral wall 62 a of the first inner plug body 62. Therefore, the second inner plug member 70 is combined with the first inner plug member 60 from above. The inside of the communicating cylindrical portion 8 communicates with the inside of the inner container 2 through the communicating hole 64 and communicates with the discharge port 6.

  The check valve 10 is disposed closer to the discharge port 6 than the first valve 80, and a first valve 80 that openably closes the lower opening of the communication cylinder 8 located on the inner container 2 side. A second valve 90 is provided to close the upper opening of the communicating cylindrical portion 8 located on the discharge port 6 side in an openable manner.

  The first valve 80 is a slit valve formed of a rubber material such as silicone rubber or an elastic material such as elastomer, and blocks the communication between the inside of the inner container 2 and the inside of the communication cylindrical portion 8 through the communication hole 64. When the pressure in the inner container 2 rises, it elastically deforms to allow communication between the inner container 2 and the communication cylinder 8 through the communication hole 64.

  The first valve 80 is disposed above the communication hole 64, and includes a valve main body 81 formed in a circular shape in a plan view that blocks the communication hole 64 from above. The outer peripheral edge portion of the valve main body 81 is integrally connected to the lower end portion of the communication cylindrical portion 8 along the entire circumference. Therefore, the first valve 80 is integrally formed with the second inner plug member 70. Therefore, by combining the second inner plug member 70 with the first inner plug member 60, it is possible to appropriately combine the first valve 80 so that the valve main body 81 is positioned above the communication hole 64.

  However, the present invention is not limited to this case, and the first valve 80 may be formed separately from the second inner plug member 70 and may be combined inside the communication cylindrical portion 8 of the second inner plug member 70. . Furthermore, the second inside plug member 70 is not essential, and for example, the first valve 80 may be combined inside the peripheral wall 62 a of the first inside plug main body 62 in the first inside plug member 60. In this case, the peripheral wall 62 a of the first inner stopper body 62 may be functioned as a communicating cylindrical portion communicating with the inside of the inner container 2 and the discharge port 6.

The valve main body 81 is formed to bulge upward in a dome shape as it goes radially inward from the lower end portion of the communication cylindrical portion 8, and a slit 82 through which contents can pass is formed at the central portion thereof. It is formed.
However, the present invention is not limited to this case. For example, the valve body 81 may be formed flat. The shape of the valve body 81 may be appropriately designed in accordance with the target pressure.
The shape of the slit 82 is not particularly limited, but may be, for example, a linear shape or a cross shape in plan view, or a radial shape around the container axis O.

  The second valve 90 has a content between the first valve 80 and the valve body cylinder 91 disposed between the inner flange portion 34 of the cap main body 30 and the inner plug connection portion 63 of the first inner plug member 60. And a second space R2 communicating with the discharge port 6 between the discharge space 6 and the discharge port 6. The communication cylinder part is movable toward the discharge port 6 side. A valve body 92 for closing the upper end opening of 8 and an elastic connecting piece (biasing portion) 93 for connecting the valve body 92 and the valve body cylinder 91 and biasing the valve body 92 toward the inner container 2 side And have.

The valve body cylinder 91 is disposed coaxially with the container axis O, and the upper end thereof is inserted from below into the annular space formed between the first support cylinder 38 and the second support cylinder 39, For example, it is closely fitted to the outside of the first support cylindrical portion 38. The lower end portion of the valve body cylinder 91 is closely fitted to the inside of the seal cylinder portion 61 in a state where the lower end portion of the valve body cylinder 91 is inserted from above into the accommodation space.
Thus, the valve body cylinder 91 is held between the cap main body 30 and the first inner plug member 60 in a state of being stably positioned in both the container axis O direction and the radial direction. The upper end portion of the valve body cylinder 91 may be closely fitted to the inside of the second support cylindrical portion 39.

  The valve main body 92 protrudes from the outer peripheral surface of the shaft body 94 radially outward from the outer peripheral surface of the cylindrical shaft body 94 coaxially arranged with the container axis O, and the discharge port 6 side of the communicating cylindrical portion 8 An annular seal flange portion 95 is provided in close contact with the upper end opening edge, ie, the flange portion 71, so as to be movable toward the discharge port 6 side.

The shaft body 94 is formed in a double cylindrical shape extending in the vertical direction (the container axis O direction), and is accommodated in the communication cylindrical portion 8 so as to be vertically movable.
The shaft 94 includes a first inner cylinder 96 disposed inside the communication cylinder 8, a second inner cylinder 97 disposed further inside the first inner cylinder 96, and an upper end of the first inner cylinder 96. An annular first closed wall 98 radially connecting the portion and the upper end of the second inner cylinder 97, and a second closed wall 99 closing the lower end opening of the second inner cylinder 97.

  The upper end opening of the first inner cylinder 96 is closed by the first closed wall 98, the second inner cylinder 97, and the second closed wall 99, and therefore, the first inner cylinder 96 is formed in an upper cylindrical shape. On the other hand, since the lower end opening part is obstruct | occluded by the 2nd closed wall 99, the 2nd inner cylinder 97 is formed in bottomed cylindrical shape. Therefore, the shaft body 94 of the present embodiment has a shape in which the shapes of the toped cylindrical shape and the bottomed cylindrical shape are combined.

  The lower half of the shaft body 94 configured as described above, which is located below the substantially central portion in the container axis O direction, is accommodated in the communication cylinder portion 8. Therefore, the upper half of the shaft 94 located above the substantially central portion in the container axis O direction protrudes upward relative to the communicating cylindrical portion 8.

The upper end portion side of the first inner cylinder 96 is an enlarged diameter portion 96a, and the lower end portion side is a reduced diameter portion 96b having an outer diameter smaller than that of the enlarged diameter portion 96a.
The outer diameter of the enlarged diameter portion 96 a is substantially the same as the inner diameter of the communication cylindrical portion 8. Thus, the outer circumferential surface of the enlarged diameter portion 96 a of the first inner cylinder 96 is in sliding contact with or in proximity to the inner circumferential surface of the communicating cylindrical portion 8. Further, between the outer peripheral surface of the reduced diameter portion 96 b of the first inner cylinder 96 and the inner peripheral surface of the communicating cylindrical portion 8, an annular gap opened downward is formed. Thereby, when the second valve 90 is opened, it is possible to move the contents through the gap.

  However, the outer diameter of the first inner cylinder 96 is formed to be the same over the entire length in the vertical direction, and the portion corresponding to the reduced diameter portion 96b is recessed radially inward and extends vertically and opens downward. A plurality of longitudinal grooves may be formed at intervals in the circumferential direction. Even in this case, when the second valve 90 is opened, it is possible to move the contents through the vertical groove.

  The seal flange portion 95 is formed to project in the radial direction from the outer peripheral surface of the enlarged diameter portion 96 a of the first inner cylinder 96. As described above, the seal flange portion 95 is in close contact with the flange portion 71 of the second inner plug member 70 so as to be movable toward the discharge port 6 side. Thereby, sealing performance is secured between the seal flange portion 95 and the flange portion 71. Therefore, the valve body 92 having the shaft body 94 and the seal flange portion 95 closes the upper end opening of the communicating cylindrical portion 8 in an openable manner.

The elastic connection piece 93 extends along the circumferential direction, and its inner end is connected to the outer peripheral edge of the seal flange 95, and its outer end is connected to the inner peripheral surface of the valve body cylinder 91. For example, three elastic connection pieces 93 are formed at intervals in the circumferential direction. Thus, the second valve 90 is a so-called three-point valve in which the valve body 92 is elastically supported by the three elastic connection pieces 93.
The number of elastic connection pieces 93 is not limited to three. For example, one elastic connection piece 93 may elastically support the valve main body 92, or two or four or more elastic connection pieces 93. The valve body 92 may be elastically supported.

  The elastic connection piece 93 elastically supports the valve body 92 so as to bias the valve body 92 downward toward the inner container 2 side. Therefore, the seal flange portion 95 is pressed from above with respect to the collar portion 71 by the elastic force (spring force) from the elastic connection piece 93. Thereby, the upper end opening of the communicating cylindrical portion 8 can be closed, and the communication between the first space R1 and the second space R2 is shut off.

  Further, the elastic connection piece 93 elastically deforms in the container axis O direction as shown in FIG. 2 according to the internal pressure fluctuation of the inner container 2 and the pressure of the contents to be discharged, etc. It is elastically supported so as to be movable upward in the direction of. Thus, for example, when the pressure of the inner container 2 rises, the upper end opening of the communicating cylindrical portion 8 can be opened, and the first space R1 and the second space R2 can be communicated.

  When the second valve 90 is closed, the elastic connection piece 93 may not bias the valve body 92 downward toward the inner container 2 side. When the second valve 90 is closed, for example, the elastic connection piece 93 is set to a natural length, and when the valve body 92 moves to the discharge port 6 side and the second valve 90 is opened, the valve body 92 is It may be configured to be biased toward the side.

As shown in FIG. 2, when the valve body 92 moves toward the discharge port 6, the shaft body 94 is such that the diameter-increased portion 96 a of the first inner cylinder 96 is positioned above the communication cylinder 8. Move by movement amount. Therefore, when the valve body 92 moves toward the discharge port 6, the shaft body 94 does not completely come out from the inside of the communication cylindrical portion 8, but a part thereof (diameter reducing portion 96 b) It is accommodated in the part 8.
Furthermore, with the movement of the valve main body 92 toward the discharge port 6, the shaft 94 moves upward, thereby increasing the volume in the first space R 1 and reducing the volume in the second space R 2. Is possible.

Furthermore, as shown in FIG. 1, the air introduction valve 100 is integrally formed with the second valve 90 configured as described above.
The air introduction valve 100 is provided with an elastically deformed annular valve 101 which is annularly projected radially outward from the outer peripheral surface of the valve body cylinder 91 and whose outer end is a free end.
The annular valve 101 is disposed between the seal cylinder 33 of the cap body 30 and the connection wall 22 of the mounting cap 20, and the outer end thereof is from below the lower surface of the seal cylinder 33 of the cap body 30. Detachable contact or proximity. Thus, the air introduction valve 100 closes the first air introduction hole 45 so as to be openable from below.

Accordingly, the air introduction valve 100 functions as a check valve that allows the flow of air from the outside through the first air introduction hole 45 and regulates the flow of the air to the outside through the first air introduction hole 45. . Air introduced from the outside through the first air introducing hole 45 flows between the inner container 2 and the outer container 3 through the second air introducing hole 46, the air groove 14 and the air intake hole 13.
The air introduction valve 100 may close the first air introduction hole 45 at least when the outer container 3 is squeezed and restrict the flow of air to the outside through the first air introduction hole 45. Therefore, as described above, the outer end portion of the annular valve 101 may be close to the lower surface of the seal cylindrical portion 33 from below under normal conditions before squeezing the outer container 3.

(Function of discharge container)
Next, the case where the contents are discharged using the discharge container 1 configured as described above will be described.
In this case, from the state shown in FIG. 1, the lid cap 50 is rotated about the hinge portion 47 (open operation) to separate the lid cap 50 from the cap main body 30 as shown in FIG. Thereby, since the plug 55 can be detached from the discharge port 6, the discharge port 6 can be opened.

  After the discharge port 6 is opened, for example, the outer container 3 is squeeze-deformed radially inward in a posture in which the container main body 4 is tilted or turned upside down so that the opening 5 of the container main body 4 faces downward (elastic deformation) Let As a result, the inner container 2 and the outer container 3 shrink inward in the radial direction and are reduced in volume, so the internal pressure of the inner container 2 rises. Thereby, since the valve body 81 can be elastically deformed and the slit 82 can be opened, the first valve 80 can be opened. Therefore, the contents can be pushed out of the inner container 2 and moved into the first space R1.

  Furthermore, since the valve body 92 can be moved toward the discharge port 6 against the biasing force of the elastic connection piece 93, the upper end opening of the communication cylinder 8 is opened to open the second valve 90. It can be done. Therefore, moving the contents pushed out from the inside of the inner container 2 from the first space R1 to the second space R2 through the annular gap between the reduced diameter portion 96b of the first inner cylinder 96 and the communication cylinder 8 Can be moved to the discharge port 6 continuously. As a result, the contents can be discharged to the outside through the discharge port 6.

When the squeeze deformation of the outer container 3 is stopped or released after the content is discharged, the increase in the internal pressure of the inner container 2 is stopped or decreased. Therefore, the valve body 81 can be elastically restored and deformed to close the slit 82 in combination with the weakening of the pressing force of the contents to the valve body 81, so that the first valve 80 can be closed.
Furthermore, at the same time, the elastic connection piece 93 is restored and displaced downward by the elastic restoring force in combination with the weakening of the pressing force to the valve main body 92 by the contents. Thereby, the seal flange portion 95 can be contacted (seated) from above with respect to the upper end opening edge of the communication cylinder portion 8 to close the upper end opening portion of the communication cylinder portion 8, as shown in FIG. The second valve 90 can be closed.

  Thereby, it is possible to suppress the inflow of air into the inner container 2 through the inside of the discharge port 6 and the communicating cylindrical portion 8, and make it difficult for the contents remaining in the inner container 2 to come into contact with air. It is possible to suppress the deterioration or deterioration of the object.

  When the squeeze deformation of the outer container 3 is released, the outer container 3 starts to be restored and deformed, so a negative pressure is generated between the outer container 3 and the inner container 2. Therefore, the annular valve 101 of the air introduction valve 100 is elastically deformed so as to be pulled downward by this negative pressure. Thus, the air introduction valve 100 can be opened to open the first air introduction hole 45. Therefore, the gap between the outer container 3 and the inner container 2 communicates with the outside of the container body 4 through the intake hole 13, the air groove 14, the second air introduction hole 46 and the first air introduction hole 45.

  Therefore, air can be introduced into the gap between the outer container 3 and the inner container 2 through the air introduction valve 100. Then, when the internal pressure of the gap between the outer container 3 and the inner container 2 rises (increases to the atmospheric pressure) due to the inflow of air, the annular valve 101 is elastically restored and deformed to close the first air introduction hole 45. As a result, the outer container 3 can be restored and deformed while the inner container 2 is reduced in volume. The same operation as described above can be repeated until the discharge of the contents is completed.

  By the way, when discharging the contents, the contents pushed out from the inside of the inner container 2 as described above pass through the first valve 80 and enter the first space R1, and then pass through the second valve 90. By entering into the second space R2, the discharge port 6 is discharged to the outside. Therefore, when the first valve 80 and the second valve 90 are closed, it is possible to store a part of the contents remaining without being discharged in the first space R1. And the content itself which accumulated in 1st space R1 can be functioned as what is called a filling seal.

  Therefore, when the second valve 90 does not close due to the high viscosity content (for example, solid matter contained in the content is caught between the valve main body 92 and the communicating cylindrical portion 8 and the second valve 90 is completely Even when the valve is not closed, the filling seal can be used to suppress the flow of air into the inner container 2. In particular, the higher the viscosity of the contents, the better the sealability of the filling seal.

  For example, in the case of a content having a certain viscosity or more, for example, even when the first valve 80 does not completely close by the solid contained in the content being caught in the slit 82, the first space It is difficult for the contents accumulated in R 1 to pass through the first valve 80 and return into the inner container 2. Therefore, the contents can be maintained in the state of being stored in the first space R1, and can function as a filling seal. Therefore, even if the first valve 80 does not close completely, the filling seal can be used to suppress the flow of air into the inner container 2.

  Furthermore, when discharging the contents, the shaft body 94 of the valve body 92 in the second valve 90 moves upward with the movement of the valve body 92 to the discharge port 6 side as shown in FIG. It moves from the inside of the communicating cylindrical portion 8 to the second space R2 side. Thus, the volume in the first space R1 can be increased, and the volume in the second space R2 can be decreased. Then, after the contents are discharged, as the second valve 90 is closed, as shown in FIG. 1, the shaft body 94 of the valve main body 92 is restored and moved into the communicating cylindrical portion 8 from the second space R2 side. Therefore, the volume in the first space R1 can be reduced and the volume in the second space R2 can be increased, contrary to the above.

  Therefore, negative pressure can be provided in the second space R2, and the contents around the discharge port 6 are drawn into the second space R2 or the first space R1 side by the suck back effect accompanying the restoration movement of the shaft 94. be able to. As a result, the contents are unlikely to remain around the discharge port 6, specifically, inside the third cylindrical portion 42 and the fourth cylindrical portion 43, and the discharge port 6 can be maintained in a clean state. Sag can be effectively prevented.

In particular, when the shaft body 94 of the valve main body 92 shown in FIG. 2 restores from the second space R2 side into the communicating cylindrical portion 8 after discharging the contents, the enlarged diameter portion of the first inner cylinder 96 in the shaft body 94. After entering into the communicating cylindrical portion 8 from above, the portion 96 a is in sliding contact with the inner peripheral surface of the communicating cylindrical portion 8 or is maintained downward while being in close proximity to the inner peripheral surface of the communicating cylindrical portion 8. Moving. Then, after the enlarged diameter portion 96a of the shaft body 94 of the valve main body 92 enters the communicating cylindrical portion 8, the enlarged diameter portion 96a is further moved downward by a predetermined stroke, as shown in FIG. To its original position.
Therefore, when the enlarged diameter portion 96a is introduced into the communication cylindrical portion 8 from the upper side, the first space R1 and the second space R2 can be made difficult to communicate with each other, and thereafter the enlarged diameter portion 96a In addition, the degree of negative pressure in the second space R2 can be increased until it moves downward (between the strokes). Therefore, an effective suck back effect can be exhibited.
When the enlarged diameter portion 96 a is in sliding contact with the inner peripheral surface of the communication cylindrical portion 8, a more effective suck back effect can be obtained. However, even if the enlarged diameter portion 96 a is moved downward while maintaining the state in which the enlarged diameter portion 96 a is in proximity to the inner circumferential surface of the communication cylindrical portion 8, the same effect can be obtained depending on the viscosity of the contents.

  As described above, according to the discharge container 1 of the present embodiment, even if the content is high in viscosity, the entry of air into the container body 4 can be suppressed, so the content due to the contact with the air Deterioration or deterioration of objects can be effectively suppressed. Furthermore, since the contents in the vicinity of the discharge port 6 can be drawn in by the suck back effect accompanying the return movement of the shaft body 94 in the second valve 90, the discharge port 6 can be maintained in a clean state.

  Furthermore, since the first valve 80 is a slit valve, when the increase in internal pressure of the inner container 2 stops or the internal pressure decreases after discharging the contents, the valve main body 81 is elastically deformed elastically and the slit 82 is closed. , Can be closed. Therefore, the contents can be stored more reliably in the first space R1, and the function as the filling seal can be more easily exhibited. Therefore, the outside air can be more reliably suppressed from flowing into the inner container 2.

  Furthermore, when the valve body 92 of the second valve 90 moves toward the discharge port 6, a part (the reduced diameter portion 96 b) is accommodated in the communication cylindrical portion 8. Therefore, when the second valve 90 is opened, a part of the shaft body 94 (the reduced diameter portion 96 b) can be retained in the communication cylindrical portion 8, so the second valve 90 can be opened via the shaft body 94. It can be moved slowly and stably. As a result, switching between opening and closing of the second valve 90 can be smoothly performed.

  While the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. The embodiment can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. The embodiments and the modifications thereof include, for example, those which can be easily conceived by those skilled in the art, substantially the same ones, and equivalent ranges.

  For example, in the embodiment described above, a laminated peelable container in which the inner container 2 is peelably stacked on the inner surface of the outer container 3 as the container main body 4 is not limited to this, for example It may be a double container in which a gap is secured between the container 3 and the container 3.

  Further, in the above embodiment, the shaft body 94 of the second valve 90 is formed to project above the communication cylindrical portion 8, but it is sufficient if at least the communication cylindrical portion 8 is accommodated. It does not have to project upwards.

  Further, in the above embodiment, the seal flange portion 95 is in close contact with the upper end opening edge of the communication cylinder portion 8, that is, the flange portion 71 to ensure sealing performance, but the seal flange portion 95 is essential There is no need to have it. For example, the sealing performance may be secured by closely fitting the enlarged diameter portion 96 a of the first inner cylinder 96 inside the communication cylinder 8. However, as in the above embodiment, when the seal flange portion 95 is used, the upper end opening portion of the communication cylindrical portion 8 can be closed more stably and openably, so that the second valve 90 Sealing performance can be further improved, which is preferable.

  Moreover, in the said embodiment, although the shape of the shaft body 94 set it as the shape where both the shape of a top cylinder shape and a bottomed cylinder shape were put together, it is not limited in this case. For example, the shaft 94 may be formed in a solid cylindrical shape, or may be formed in a toped cylindrical shape or a bottomed cylindrical shape.

In particular, when the shaft body 94 is formed in a cylindrical shape with an apex, when the valve main body 92 moves toward the discharge port 6, the volume in the second space R2 can be more effectively reduced. It is. Thus, the volume in the second space R2 can be effectively increased to make the pressure in the second space R2 negative as the second valve 90 closes after discharging the contents. Therefore, the contents in the vicinity of the discharge port 6 can be effectively drawn into the second space R2 or the first space R1 side by the suck back effect. Furthermore, when the shaft body 94 is formed in a cylindrical shape with a bottom, it is possible to exert a pressing force from the contents on the bottom wall of the shaft body 94 at the time of discharging the contents, and the valve body 92 can be made smoother. It can be moved to the discharge port 6 side. Therefore, it can be connected to quick discharge of the contents.
In the case of the shaft body 94 of the present embodiment, since the shape of both the toped cylindrical shape and the bottomed cylindrical shape is a combined shape, the above-described operation and effect in the case of the toped cylindrical shape and In the case of the bottom cylindrical shape, it is possible to exhibit the above-described effects and effects in a well-balanced manner.

  Furthermore, in the above embodiment, although the second valve 90 and the air introduction valve 100 are integrally configured, the present invention is not limited to this case, and the second valve 90 and the air introduction valve 100 are separately configured. It does not matter.

R1 ... first space R2 ... second space 1 ... discharge container 2 ... inner container 3 ... outer container 4 ... container main body 5 ... mouth of container main body 6 ... discharge port 7 ... discharge cap 8 ... communicating cylindrical portion 9 ... inside plug Member 10 ... check valve 13 ... intake hole 80 ... first valve 90 ... second valve 92 ... valve body of second valve 93 ... elastic connection piece (biasing portion)
94: Shaft 95: Seal flange portion

Claims (4)

A container body comprising an elastically deformable outer container in which the contents are accommodated and a volume-reducible deformable inner container, and the inner container is internally provided, and an intake hole is formed between the inner container and the inner container for sucking in external air. When,
A discharge cap attached to the mouth of the container body and having a discharge port;
An internal plug member disposed in the inside of the mouth of the container body, having a communicating cylindrical portion that brings the inside of the inner container and the discharge port into communication with each other;
Allows movement of contents from the inside of the inner container to the discharge port through the inside of the communication cylinder, and suppresses the flow of outside air into the inner container through the inside of the discharge port and the communication cylinder. And a check valve,
The check valve is disposed closer to the discharge port than the first valve, the first valve closing the lower opening portion of the communication cylinder portion positioned on the inner container side so as to be openable. And a second valve for openably closing the upper opening located on the discharge port side of the communication cylinder,
The second valve defines a first space capable of storing contents between the second valve and the first valve, and defines a second space communicating with the discharge port between the second valve and the discharge port. A valve body that closes the upper opening movably toward the discharge port, and a biasing unit that biases the valve body that has moved to the discharge port toward the inner container. ,
The valve main body increases the volume in the first space when the valve main body moves toward the discharge port while at least a part of the valve main body is accommodated in the communication cylinder, and the second A discharge container characterized by comprising a shaft for reducing the volume in the space. In the discharge container according to claim 1,
The discharge container, wherein the first valve is a slit valve. In the discharge container according to claim 1 or 2,
The discharge container, wherein a part of the shaft body is accommodated in the communication cylinder when the valve body moves toward the discharge port. The discharge container according to any one of claims 1 to 3.
The valve main body is formed so as to project radially outward from the shaft body, and is directed to the discharge port side with respect to an upper end opening edge located on the discharge port side of the communication cylindrical portion. A discharge container comprising an annular seal flange portion in movable contact.

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