JP7101461B2 - Discharge container - Google Patents

Description

The present invention relates to a discharge container.

Conventionally, an inner container whose volume is reduced and deformed as the contents decrease, a container body having an inner container and an outer container that can be elastically deformed, and a container body that is attached to the mouth of the container body and has contents on the top wall. A ridged tubular discharge nozzle having a discharge hole for discharging an object, an inner plug arranged in the discharge nozzle and a communication hole for communicating the discharge hole and the inside of the inner container, and the inner plug. A discharge container is known to include a valve body provided with a valve portion that is arranged on the peripheral edge of the opening of the communication hole so as to be detachably upward and has a valve portion that closes the communication hole so as to be open.

Japanese Unexamined Patent Publication No. 2016-222309

However, in the conventional discharge container, the relative positions of the valve body and the inner plug may be displaced, and it is possible to secure the sealing property between the valve portion and the opening peripheral portion of the communication hole in the inner plug. It could be difficult.

The present invention has been made in view of such circumstances, and an object thereof is a discharge container capable of ensuring a sealing property between a valve portion and an opening peripheral portion of a communication hole in an inner plug. Is to provide.

The discharge container according to the present invention is attached to a container body having an inner container whose volume is reduced and deformed as the contents are reduced, an outer container in which the inner container is internally deformed and elastically deformable, and a mouth portion of the container body. A ridged cylindrical discharge nozzle having a discharge hole for discharging the contents on the top wall portion, and a communication hole arranged in the discharge nozzle and communicating the discharge hole and the inside of the inner container are provided. The formed inner plug, the main body formed in the shape of an eclipse cylinder, and the main body protruding outward in the radial direction and upward on the peripheral edge of the opening of the communication hole in the inner plug. The valve body is provided with a valve body that is freely disengaged and has a valve portion that freely closes the communication hole, and is disposed in the inner plug in the radial direction of the communication hole. A support fitted to the main body is arranged, and the support is formed in a columnar shape .

According to the present invention, since the support body fitted in the main body of the valve body is arranged in the inner plug, the valve body is supported by the support, so that the inner plug and the valve body are relative to each other. It is possible to prevent the position from shifting, and it is possible to reliably secure the sealing property between the valve portion and the peripheral portion of the opening of the communication hole in the inner plug.

Here, the inner plug may include a fitting cylinder in which the main body portion of the valve body is fitted and the communication hole is formed inside.

In this case, since the main body is fitted in the fitting cylinder and is supported from both sides in the radial direction by the fitting cylinder and the support, the relative misalignment of the inner plug and the valve body is ensured. Can be suppressed.

Further, the main body portion may be formed in the fitting cylinder so as to be fitted from above the communication hole, and the inner diameter of the communication hole may be smaller than the outer diameter of the valve portion.

In this case, since the main body is formed in the fitting cylinder so that it can be fitted from above the communication hole, the valve body is positioned above the inner plug when the valve body and the inner plug are assembled to each other. By moving the valve body and the inner plug closer to each other in the vertical direction from the state of being in the state, the lower surface of the valve part is made to enter the fitting cylinder through the communication hole, and the lower surface of the valve part is the opening peripheral portion of the communication hole in the inner plug. It becomes possible to gradually bring it closer to the top and then bring it into contact. Therefore, when the valve body and the inner plug are assembled to each other, the valve portion does not come into close contact with the inner peripheral surface of the fitting cylinder and is significantly bent and deformed, and it is possible to prevent the valve portion from becoming habitual. Therefore, the sealing property between the valve portion and the peripheral portion of the opening of the communication hole in the inner plug can be more reliably ensured.

According to the discharge container according to the present invention, it is possible to secure the sealing property between the valve portion and the opening peripheral portion of the communication hole in the inner plug.

It is a vertical sectional view of the discharge container which concerns on one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the discharge container 1 includes an inner container 4 whose volume is reduced and deformed as the contents decrease, a container body 2 having an inner container 4 and an outer container 6 which is elastically deformable, and a container. A ridged tubular discharge nozzle 10 mounted on the mouth portion 3 of the main body 2 and having a discharge hole 12 for discharging the contents in the top wall portion 11, and a discharge hole 12 arranged in the discharge nozzle 10. An inner plug 20 having a communication hole 21 that communicates with the inside of the inner container 4, a valve body 30 that freely closes the communication hole 21, and a discharge hole that is detachably attached to the mouth 3 of the container body 2. A cap 8 that closes the 12 so as to be openable is provided.

The container body 2 is formed in the shape of a bottomed cylinder, and the cap 8 is formed in the shape of a ridged cylinder, and the container body 2 and the cap 8 are arranged coaxially with the common axis. Hereinafter, this common axis is referred to as a central axis O, and the direction along the central axis O is referred to as a vertical direction. Further, the bottom side of the container body 2 along the vertical direction is referred to as a lower side, and the mouth 3 side of the container body 2 along the vertical direction is referred to as an upper side. Further, in a plan view seen from the vertical direction, the direction orthogonal to the central axis O is referred to as the radial direction, and the direction orbiting around the central axis O is referred to as the circumferential direction.

The container body 2 is a so-called delamination container in which the outer surface of the inner container 4 and the inner surface of the outer container 6 are laminated. The container body 2 includes a mouth portion 3, a shoulder portion (not shown), a body portion, and a bottom portion, and is formed in a bottomed tubular shape in which these are continuously arranged in this order from the upper side to the lower side. At least a portion of the outer container 6 located on the body portion is elastically deformable (squeeze deformable) toward the inside of the container body 2. The inner container 4 undergoes volume reduction deformation as the outer container 6 undergoes squeeze deformation.

The mouth portion 3 has a structure in which the mouth portion 5 of the inner container 4 and the mouth portion 7 of the outer container 6 are laminated. An annular folded portion protruding outward in the radial direction is formed at the upper end portion of the mouth portion 5 of the inner container 4, and this folded portion is arranged on the upper end opening edge of the mouth portion 7 of the outer container 6.
Here, the outer container 6 is formed with an outside air introduction hole (not shown) that penetrates the outer container 6. The outside air introduction hole introduces outside air between the inner surface of the outer container 6 and the outer surface of the inner container 4 which is peeled off from the outer container 6 to reduce its volume and deform. The outside air introduction hole is formed in the body of the outer container 6, and when the contents are discharged, the body of the outer container 6 is squeeze-deformed with the outside air introduction hole closed by a finger.
The outside air introduction hole can be provided in the mouth 7, shoulder, bottom, etc. of the outer container 6, and the formation position does not matter. Further, a check valve that opens and closes the outside air introduction hole may be provided.

The discharge nozzle 10 includes a top wall portion 11 and a peripheral wall portion 13 extending downward from the outer peripheral edge of the top wall portion 11, each of which is arranged coaxially with the central axis O.
The peripheral wall portion 13 has a seal cylinder portion 14 that is liquid-tightly fitted in the mouth portion 3 of the container body 2, and an annular shape that protrudes outward in the radial direction from the upper end edge of the seal cylinder portion 14 and extends in the circumferential direction. The flange portion 15 and the connecting cylinder portion 16 extending upward from the upper end edge of the seal cylinder portion 14 and connecting to the outer peripheral edge portion of the top wall portion 11 are provided.

The inner peripheral surface of the seal cylinder portion 14 is formed so that the lower portion has a slightly larger diameter than the upper portion. At the lower end of the inner peripheral surface of the seal cylinder portion 14, an engaging protrusion protruding inward in the radial direction is formed.
The crossguard 15 is arranged on the upper end opening edge of the mouth 3.

The connecting cylinder portion 16 has a lower portion 16a extending straight upward from the upper end edge of the seal cylinder portion 14, an intermediate portion 16b whose diameter is gradually reduced upward from the upper end edge of the lower portion 16a, and an upper end portion 16b. It comprises an upper portion 16c that extends upward from the edge and connects to the outer peripheral edge of the top wall portion 11. The inner diameter of the lower portion 16a is smaller than the inner diameter of the upper portion of the seal cylinder portion 14. The inner peripheral surfaces of the upper portion 16c and the lower portion 16a extend straight in the vertical direction. The inner diameter of the upper portion 16c is smaller than the inner diameter of the lower portion 16a.

A discharge hole 12 that penetrates the top wall portion 11 in the vertical direction is formed at the center portion in the radial direction of the top wall portion 11. The discharge hole 12 is arranged coaxially with the central axis O. A concave curved surface portion 11a having a circular shape on the upper surface, which is located coaxially with the central axis O, is formed at the center portion in the radial direction on the upper surface of the top wall portion 11. The diameter of the concave curved surface portion 11a is larger than the inner diameter of the discharge hole 12. The connecting portion between the outer peripheral edge portion of the top wall portion 11 and the upper end portion of the upper portion 16c of the peripheral wall portion 13 is formed in a curved surface shape protruding toward the outside of the discharge nozzle 10. The upper surface of the top wall portion 11 and the outer peripheral surface of the peripheral wall portion 13 are smoothly connected without a step.

A bulging portion 17 projecting downward is formed on the lower surface of the top wall portion 11. The bulging portion 17 is formed in an inverted truncated cone shape coaxial with the central axis O. A plurality of protruding ribs 18 are formed on the lower surface of the top wall portion 11 at intervals in the circumferential direction. The protruding rib 18 projects radially outward from the peripheral surface of the bulging portion 17 forming an inverted truncated cone. A discharge hole 12 is opened on the lower end surface of the bulging portion 17. A plurality of protrusions 26 projecting downward are arranged on the peripheral edge of the opening of the discharge hole 12 on the lower end surface of the bulging portion 17 at intervals in the circumferential direction.

The inner plug 20 is formed in a cylindrical shape arranged coaxially with the central axis O. The upper end opening edge 20a of the inner plug 20 gradually extends downward from the outside to the inside in the radial direction. The outer peripheral portion of the upper end opening edge 20a of the inner plug 20 is in contact with a portion of the lower surface of the top wall portion 11 of the discharge nozzle 10 located on the outer side in the radial direction from the bulging portion 17. The inner peripheral portion of the upper end opening edge 20a of the inner plug 20 is separated downward from the lower surface of the top wall portion 11. The upper end opening of the inner plug 20 is the above-mentioned communication hole 21. As a result, the opening peripheral edge of the communication hole 21 in the inner plug 20 becomes the upper end opening edge 20a of the inner plug 20.
The inner plug 20 is fitted in the upper portion 16c of the connecting cylinder portion 16 in the discharge nozzle 10, and is arranged below the fitting cylinder 22 and the fitting cylinder 22 having an upper end opening as a communication hole 21. It also includes a lower cylinder portion 23 that is fitted into the seal cylinder portion 14 of the discharge nozzle 10 and has a diameter larger than that of the fitting cylinder 22.

An annular engaging ring portion 23b is formed on the outer peripheral surface of the lower end portion of the lower cylinder portion 23 so as to project outward in the radial direction and extend in the circumferential direction. The lower end of the engaging ring portion 23b is locked to the upper end of the engaging projection of the seal cylinder portion 14 of the discharge nozzle 10.
The inner peripheral surface of the fitting cylinder 22 extends straight in the vertical direction. A plurality of vertical ribs 27 extending in the vertical direction are formed on the inner peripheral surface of the fitting cylinder 22 at intervals in the vertical direction over the entire area in the vertical direction except for the upper end portion thereof. On the outer peripheral surface of the upper end portion of the fitting cylinder 22, a sealing protrusion that protrudes outward in the radial direction and is in close contact with the inner peripheral surface of the connecting cylinder portion 16 is continuously formed over the entire circumference.

The valve body 30 is a check valve that limits the flow of fluid from the upper side (discharge hole 12 side) to the lower side (inner container 4 side), while allowing the flow in the opposite direction. The valve body 30 is made of an elastically deformable soft material such as nitrile rubber, butyl rubber, silicon rubber, elastomer, and urethane.
The valve body 30 protrudes outward in the radial direction from the main body portion 33 formed in the shape of an eclipse cylinder, and is arranged on the upper end opening edge 20a of the inner plug 20 so as to be detachably upward. The valve portion 31 is provided so as to open and close the communication hole 21. The valve portion 31 and the main body portion 33 are integrally formed.

The main body 33 is arranged coaxially with the central axis O. The main body 33 is fitted in the fitting cylinder 22 of the inner plug 20. The vertical rib 27 of the inner plug 20 is in contact with the outer peripheral surface of the main body 33. A flow path extending in the vertical direction is defined between the outer peripheral surface of the main body 33 and the inner peripheral surface of the inner plug 20.
The main body 33 is formed in the fitting cylinder 22 so as to be able to be fitted from above the communication hole 21. For example, the outer diameter of the main body 33 is less than or equal to the inner diameter of the fitting cylinder 22, or the main body 33 is compressed and deformed so that it can enter the fitting cylinder 22 from above the communication hole 21. It is larger than the inner diameter of the combined cylinder 22.

The top surface of the main body 33 faces the lower end surface of the bulging portion 17 of the discharge nozzle 10 with a vertical gap. The outer diameter of the top surface of the main body 33 is the same as the outer diameter of the lower end surface of the bulging portion 17. The protrusion 26 of the discharge nozzle 10 is in contact with the top surface of the main body 33. The outer peripheral surface of the lower end portion of the main body portion 33 gradually extends inward in the radial direction from the upper side to the lower side. The outer peripheral surface of the lower end portion of the main body portion 33 is radially opposed to the lower end portion of the vertical rib 27 of the inner plug 20.

The valve portion 31 is formed in an annular shape that gradually extends upward from the outer peripheral surface of the main body portion 33 toward the outside in the radial direction. The outer diameter of the valve portion 31 is larger than the inner diameter of the communication hole 21. The valve portion 31 is formed at the upper end portion of the main body portion 33. The upper surface of the valve body 30 is formed in a concave shape that is recessed downward. The valve portion 31 is formed so as to be elastically deformable upward. The valve portion 31 is seated on the upper end opening edge 20a of the inner plug 20 in a state of being elastically deformed upward, so that the lower surface is brought into close contact with the upper end opening edge 20a of the inner plug 20 by the elastic restoring force. At this time, the upper surface of the valve portion 31 is separated downward from the protruding rib 18 of the top wall portion 11, and the outer peripheral edge portion on the upper surface of the valve portion 31 is located above the lower end surface of the bulging portion 17. ing. As described above, the upper surface of the valve body 30 is in a state in which the bulging portion 17 has entered the inside of the upper surface of the valve body 30 while being separated downward from the top wall portion 11 of the discharge nozzle 10.

The cap 8 is formed in a ridged cylinder shape, and a female screw portion to be screwed to a male screw portion formed on the outer peripheral surface of the mouth portion 7 of the outer container 6 is formed on the inner peripheral surface of the peripheral wall 8a. .. The cap 8 extends downward and includes a surrounding cylinder 9 that surrounds the connecting cylinder portion 16 of the discharge nozzle 10 from the outside in the radial direction. At the central portion of the top wall 8b of the cap 8, a plug protrusion 8c protruding downward is formed. The plug protrusion 8c abuts on the inner surface of the concave curved surface portion 11a formed on the upper surface of the top wall portion 11 of the discharge nozzle 10 to close the discharge hole 12.

In the present embodiment, the inner plug 20 is provided with a support 25 that is arranged inside the communication hole 21 in the radial direction and is fitted in the main body 33 of the valve body 30. The support 25 is formed in a columnar shape arranged coaxially with the central axis O. The support 25 is arranged in the fitting cylinder 22. The support 25 is integrally formed with the inner plug 20. The upper end of the support 25 is located below the communication hole 21. The positions of the upper ends of the support 25 and the vertical rib 27 in the vertical direction are equal to each other.

The lower end portion of the support 25 is connected to the upper end portion of the lower cylinder portion 23 of the inner plug 20 via the connecting piece 28. A plurality of connecting pieces 28 are arranged at intervals in the circumferential direction. The connecting piece 28 is located below the lower end of the vertical rib 27. The gap between the connecting pieces 28 adjacent to each other in the circumferential direction faces the outer peripheral surface of the lower end portion of the main body 33 of the valve body 30 in the vertical direction.

Hereinafter, the operation of the discharge container 1 of the present embodiment will be described.
When discharging the contents from the discharge container 1, first, the cap 8 is removed from the mouth 3 of the container body 2 to expose the discharge hole 12, and then the mouth 3 of the discharge container 1 is located below. In addition, the container body 2 is in an inverted or tilted posture in which the bottom portion (not shown) is located above. In this state, when the outside air introduction hole is closed with a finger and the outer container 6 of the container body 2 is squeeze-deformed, the inner container 4 is deformed together with the outer container 6 to reduce the volume. Along with this volume reduction deformation, the internal pressure of the inner container 4 becomes a positive pressure, and the valve portion 31 is elastically deformed by this positive pressure, the communication hole 21 is opened, and the discharge hole 12 and the inside of the inner container 4 are communicated with each other.

When the valve portion 31 is opened in this way, the contents in the inner container 4 are in the gap between the connecting pieces 28 adjacent to each other in the circumferential direction, and the outer peripheral surface of the main body portion 33 and the inner circumference of the inner plug 20. After passing through the flow path between the surfaces, it passes through the communication hole 21. The contents that have passed through the communication hole 21 flow into the space between the upper surface of the valve body 30 and the lower surface of the top wall portion 11 of the discharge nozzle 10, and are discharged from the discharge hole 12.

When the internal pressure of the inner container 4 drops after the contents are discharged, the valve portion 31 sits on the upper end opening edge 20a of the inner plug 20 and the communication between the discharge hole 12 and the inside of the inner container 4 is cut off. By closing the valve portion 31 in this way, the inner container 4 is sealed, and when the obstruction of the outside air introduction hole by the fingers and the squeeze deformation are released, the outer container 6 tries to be restored and deformed. At this time, since the inner container 4 is sealed, a negative pressure is generated between the outer container 6 and the inner container 4. Then, the outside air is introduced between the outer container 6 and the inner container 4 through the above-mentioned outside air introduction hole of the outer container 6. By introducing the outside air between the outer container 6 and the inner container 4 in this way, the reduced volume shape of the inner container 4 is maintained.
As described above, the discharge operation of the contents using the discharge container 1 is completed.

As described in detail above, in the discharge container 1 of the present embodiment, since the support 25 fitted in the main body 33 of the valve body 30 is arranged in the inner plug 20, the valve body 30 supports it. By being supported by the body 25, it becomes possible to suppress the relative positions of the inner plug 20 and the valve body 30 from shifting, and between the valve portion 31 and the upper end opening edge 20a of the inner plug 20. It is possible to surely secure the sealing property of.
Further, since the main body 33 is fitted in the fitting cylinder 22 and is supported from both sides in the radial direction by the fitting cylinder 22 and the support 25, the relative of the inner plug 20 and the valve body 30 It is possible to reliably suppress misalignment.

Further, since the main body 33 is formed in the fitting cylinder 22 so as to be able to be fitted from above the communication hole 21, the valve body 30 is inserted into the inner plug 30 when the valve body 30 and the inner plug 20 are assembled to each other. By moving the valve body 30 and the inner plug 20 close to each other in the vertical direction from the state where the valve body 30 and the inner plug 20 are positioned above 20, the main body portion 33 enters the fitting cylinder 22 through the communication hole 21 and the valve portion 31 The lower surface can be brought into contact with the inner plug 20 after being gradually brought closer to the upper end opening edge 20a. Therefore, when the valve body 30 and the inner plug 20 are assembled to each other, the valve portion 31 does not press-contact with the inner peripheral surface of the fitting cylinder 22, for example, and is not significantly bent and deformed, and the valve portion 31 has a habit. It becomes possible to prevent the above, and it is possible to more reliably secure the sealing property between the valve portion 31 and the upper end opening edge 20a of the inner plug 20.

The present invention is not limited to the above-described embodiment described with reference to the drawings, and various modifications can be considered within the technical scope thereof.

For example, in the above-described embodiment, the support 25 is integrally formed with the inner plug 20, but the support 25 and the inner plug 20 may be separated from each other.
In the above embodiment, the inner plug 20 has a configuration in which the fitting cylinder 22 in which the main body 33 of the valve body 30 is fitted is provided inside, but the inner plug 20 includes, for example, the fitting cylinder 22. Instead, the outer peripheral surface of the main body 33 may be appropriately changed, for example, by adopting a configuration in which the outer peripheral surface of the main body portion 33 is radially separated from the inner peripheral surface of the inner plug 20 over the entire area.
In the above embodiment, the upper end opening edge 20a of the inner plug 20 is shown as the opening peripheral edge of the communication hole 21 in the inner plug 20 with which the valve portion 31 abuts. An annular valve seat that protrudes inward in the radial direction is formed in a portion located below the upper end opening edge 20a of the plug 20, and the valve portion 31 is brought into contact with the upper surface of the valve seat. May be good.

For example, in the above-described embodiment, the so-called derami container is shown as the container body 2, but the present invention is not limited to this, and for example, the outer surface of the inner container 4 and the inner surface of the outer container 6 form the contents. It may be a double container separated from the beginning before discharging.
Further, the container main body 2 may have a form in which an adhesive layer is provided between the inner container 4 and the outer container 6.

In addition, it is possible to replace the components in the above-described embodiment with well-known components as appropriate without departing from the spirit of the present invention.

1 Discharge container 2 Container body 3 Mouth 4 Inner container 6 Outer container 10 Discharge nozzle 11 Top wall 12 Discharge hole 20 Inner plug 20a Upper end opening edge (opening peripheral edge of communication hole in inner plug)
21 Communication hole 22 Fitting cylinder 25 Support 30 Valve body 31 Valve part 33 Main body part

Claims (3)

An inner container that undergoes volume reduction and deformation as the contents decrease, and a container body that has an inner container and an outer container that is elastically deformable.
A ridged cylindrical discharge nozzle mounted on the mouth of the container body and having a discharge hole for discharging the contents on the top wall.
An inner plug disposed in the discharge nozzle and having a communication hole for communicating the discharge hole and the inside of the inner container.
A main body formed in a hump cylinder shape and a main body projecting outward in the radial direction, and being arranged on the peripheral edge of the opening of the communication hole in the inner plug so as to be detachably upward. A valve body having a valve portion that freely closes the communication hole is provided.
A support that is arranged inside the communication hole in the radial direction and is fitted in the main body of the valve body is arranged in the inner plug.
A discharge container characterized in that the support is formed in a columnar shape . The discharge container according to claim 1, wherein the inner plug includes a fitting cylinder in which the main body portion of the valve body is fitted and the communication hole is formed. The second aspect of claim 2, wherein the main body portion is formed in the fitting cylinder so as to be fitted from above the communication hole, and the inner diameter of the communication hole is smaller than the outer diameter of the valve portion. Discharge container.

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