JP5871731B2 - Discharge container - Google Patents

Description

  The present invention relates to a discharge container.

  As a conventional discharge container, for example, as disclosed in Patent Document 1 below, a flexible inner container that accommodates the contents and deforms in accordance with a decrease in the contents, and the inner container is an interior. A container main body having an elastically deformable outer container, a discharge plug attached to a mouth portion of the container main body and formed with a discharge port for discharging contents, and disposed in the discharge plug, the discharge port And a cap that is detachably attached to the discharge plug and covers the discharge port are known. In addition, the outer container is formed with an intake hole capable of sucking outside air between the inner container, and the discharge plug is provided with an intake valve that shuts off the intake hole and the outside of the container so as to communicate with each other. Yes.

  In this discharge container, when the contents contained in the inner container of the container body are discharged, the outer container of the container body is squeezed (elastically deformed). Thereby, the inner container is deformed together with the outer container to reduce the volume. Along with this volumetric deformation, the internal pressure of the inner container becomes a positive pressure, the positive pressure opens the discharge valve, and the discharge port communicates with the inside of the inner container. Thereby, the content accommodated in the inner container is discharged from the discharge port.

  Thereafter, when the internal pressure of the inner container decreases, the discharge valve is closed, the inner container is sealed, and further, when the squeeze deformation described above is released, the outer container attempts to restore and deform. At this time, the negative pressure generated between the outer container and the inner container acts on the intake valve through the intake hole, whereby the intake valve is opened and the intake hole communicates with the outside of the container. Inhaled between the outer container and the inner container.

  When the internal pressure between the outer container and the inner container rises to atmospheric pressure due to the intake of the outside air, the intake valve is closed and the communication between the intake hole and the outside of the container is blocked. Thus, the volume reduction shape of the inner container is maintained by sucking the outside air between the outer container and the inner container.

JP 2004-059131 A

However, in the above-described conventional discharge container, for example, when the discharge amount of the contents is small and the amount of deformation of the inner container is small, the intake valve is opened by the negative pressure generated between the outer container and the inner container. There is a possibility that intake cannot be performed between the inner container and the outer container.
In order to avoid such a situation, it may be possible to easily deform the intake valve, but in this case, it is difficult to ensure airtightness between the inner container and the outer container. That is, for example, when the contents are discharged, the intake valve is deformed and the intake hole is easily communicated with the outside of the container, and even if the outer container is squeezed, the inner container is difficult to be reduced, and the discharge amount is not stable. There is a fear.

  The present invention has been made in view of such circumstances, and even when the discharge amount of contents is small and the deformation amount of the inner container is small, intake can be reliably performed between the inner container and the outer container. And it aims at providing the discharge container which can ensure the airtightness between the inner container and the outer container at the time of discharge of the content, and can ensure the stable discharge amount.

In order to solve the above problems, the present invention proposes the following means.
The discharge container of the present invention is a container main body having a flexible inner container that accommodates contents and shrinks and deforms as the contents are reduced, and an outer container that is internally deformed and elastically deformable. A discharge plug that is attached to the mouth portion of the container body and has a discharge port for discharging contents, and is disposed in the discharge plug so that the discharge port can communicate with the inside of the inner container. A discharge valve that shuts off, a cap that is detachably attached to the discharge plug, covers the discharge port, and is slidably disposed in the container axial direction between the mouth portion of the container body and the cap. A sealing member, and the outer container is formed with an intake hole capable of sucking outside air between the inner container and the sealing member in the container axial direction at an engaging portion provided in the cap. An engaged portion to be engaged, and the cap is connected to the mouth portion On the other hand, when the engaging part is engaged with the engaged part when the container is separated in the container axial direction, the seal member slides and opens to open the intake hole to the outside of the discharge container. From the position, it is configured to reach a blocking position that blocks the intake hole from the outside of the discharge container.

  In the discharge container according to the present invention, when discharging the contents contained in the inner container of the container main body, first, the cap is removed from the discharge plug to expose the discharge port. At this time, the engaging portion of the cap engages with the engaged portion of the seal member from the container axial direction, and the cap is further detached from the container axial direction, so that the seal member is moved from the open position to the blocking position. The suction hole is closed by the seal member, and the intake hole is blocked from the outside of the container.

  From this state, when the outer container of the container body is squeezed (elastically deformed), the inner container is deformed together with the outer container and the volume is reduced. Along with this volumetric deformation, the internal pressure of the inner container becomes a positive pressure, the positive pressure opens the discharge valve, and the discharge port communicates with the inside of the inner container. By opening the discharge valve, the contents stored in the inner container are discharged from the discharge port.

  Thereafter, when the internal pressure of the inner container decreases, the discharge valve is closed and the communication between the discharge port and the inside of the inner container is blocked. When the discharge valve is closed, the inner container is sealed, and when the squeeze deformation described above is released, the outer container attempts to restore and deform, but the intake hole is closed as described above, so the contents of the outer container and the outer container are closed. The internal pressure with the vessel becomes negative.

  After the contents are discharged, the cap is attached to the discharge plug according to the reverse procedure. At this time, the engaging portion of the cap engages with the engaged portion of the seal member from the container axis direction, and the cap member is further mounted in the container axis direction, so that the seal member moves from the blocking position to the open position. The intake hole is slid to open from the blockage by the seal member, and the intake hole communicates with the outside of the container.

  When the intake hole communicates with the outside of the container, outside air is sucked between the outer container and the inner container through the intake hole, and the internal pressure between the outer container and the inner container becomes atmospheric pressure. Further, the volume reduction shape of the inner container is maintained by sucking the outside air between the outer container and the inner container.

When the cap is removed from the discharge plug and the outer container of the container body is squeezed and deformed after the cap is attached, the intake hole is blocked by the above-described action, so the gap between the outer container and the inner container is reduced. The internal pressure becomes positive, and the positive pressure causes the inner container to undergo volume reduction deformation. When the volume of the inner container is reduced, the contents are discharged from the discharge port by the same action as described above. Thereafter, when the squeeze deformation is released and the cap is attached, the outside air is sucked between the outer container and the inner container by the same action as described above.
In this way, even when the squeezed deformed outer container is restored and deformed, the inner container is reduced in volume as the contents are reduced, and the outside air is prevented from flowing into the inner container. Deterioration of objects is prevented and storage stability is enhanced.

  According to the present invention, when the contents are discharged with the cap removed, the intake hole is kept blocked from the outside of the container by the seal member, and when the cap is mounted after the contents are discharged, the intake air by the seal member is kept. The block between the hole and the outside of the container is released, and the intake hole is opened to the outside air. Thereby, even if the discharge amount of the content is small and sufficient negative pressure does not occur between the inner container and the outer container, the intake hole can be forcibly opened by attaching the cap, Intake can be reliably performed between the inner container and the outer container regardless of the discharge amount. In addition, when discharging the contents with the cap removed, the air intake hole of the outer container can be reliably closed by the sealing member, and the airtightness between the inner container and the outer container during the discharge of the contents is ensured. Therefore, when the outer container is squeezed and deformed, the volume of the inner container can be reliably reduced, and a stable discharge amount can be ensured even when the discharge amount of the contents is small.

  Moreover, the discharge container which concerns on this invention WHEREIN: The said engaging part is good also as being formed so that the said to-be-engaged part can be overcome in a container axial direction.

  In this case, when the seal member slides and reaches the end of the blocking position or the open position due to the attaching / detaching operation of the cap, the engaging portion gets over the engaged portion in the container axial direction, so that the cap is removed. Easy to attach and detach. That is, for example, a complicated operation (such as circumferential alignment) is not required to release the engagement between the engaging portion and the engaged portion, and the operation is simple according to the present invention. is there.

  In the discharge container according to the present invention, at least one of the engaging portion and the engaged portion may be formed in an annular shape extending around the container axis.

  In this case, in the operation of attaching and detaching the cap, in order to engage the engaging portion of the cap and the engaged portion of the seal member, it is possible to save the trouble of aligning these around the container axis. Cap can be easily attached and removed.

  According to the discharge container of the present invention, even when the discharge amount of the contents is small and the deformation amount of the inner container is small, intake can be reliably performed between the inner container and the outer container, and at the time of discharge of the contents The airtightness between the inner container and the outer container can be secured, and a stable discharge amount can be secured.

It is a sectional side view which shows the principal part of the discharge container which concerns on one Embodiment of this invention. It is a figure explaining the process in which a cap is removed from the discharge stopper of the discharge container of FIG. It is a figure explaining the state which discharges the content from the discharge outlet of the discharge container of FIG. It is a figure explaining the process of attaching a cap to the discharge stopper of the discharge container of FIG.

Hereinafter, a discharge container 1 according to an embodiment of the present invention will be described with reference to the drawings. The discharge container 1 of the present embodiment is suitable for an eye drop container that discharges a small amount of liquid contents such as eye drops, for example.
As shown in FIG. 1, the discharge container 1 has a flexible inner container 2 that accommodates the contents and squeezes and deforms as the contents decrease, and the inner container 2 is housed and elastically deformable. A container main body 4 having an outer container 3, a discharge plug 6 attached to the mouth portion 4a of the container main body 4 and formed with a discharge port 5 for discharging contents, and disposed in the discharge plug 6. 5, a discharge valve 7 that cuts off the inside of the inner container 2 so as to communicate with each other, a cap 8 that is detachably attached to the discharge plug 6 and covers the discharge port 5, and an opening 4 a and a cap 8 of the container body 4. There is provided a seal member 9 disposed so as to be slidable in the container axis O direction.

Here, the container main body 4 is formed in a bottomed cylindrical shape, the cap 8 is formed in a topped cylindrical shape, and the central axes of the container main body 4 and the cap 8 are located on a common axis.
In this specification, this common axis is referred to as the container axis O, the cap 8 side along the container axis O direction is referred to as the upper side, the bottom side of the container body 4 is referred to as the lower side, and the direction perpendicular to the container axis O is the diameter. The direction that goes around the container axis O is called the circumferential direction.

  The container body 4 is a double container in which the inner container 2 is disposed in the outer container 3. In the illustrated example, the delamination bottle (laminated peeling type) in which the inner container 2 is laminated on the inner surface of the outer container 3 in a peelable manner. Container). The container body 4 is formed, for example, by blow molding a co-extruded two-layered parison, and the outer container 3 is formed relatively hard from a synthetic resin such as PP or PETG, and the inner container 2 is It is formed relatively soft from synthetic resin such as PE, nylon, ethylene vinyl alcohol and the like.

  The mouth portion 4a of the container body 4 has a two-stage cylindrical shape, and the upper portion of the mouth portion 4a has a smaller diameter than the lower portion. The mouth part 4a of the container body 4 is configured such that the mouth part 2a of the inner container 2 and the mouth part 3a of the outer container 3 are laminated in the radial direction, and the upper end part of the mouth part 2a of the inner container 2 is It is folded back radially outward and is disposed over the upper end opening edge of the mouth 3 a of the outer container 3.

The outer container 3 is formed with an intake hole 10 through which the outside air can be sucked between the outer container 3 and the inner container 2. In the illustrated example, the intake hole 10 is formed in the mouth 3 a of the outer container 3. Is formed.
The upper portion of the mouth portion 3a of the outer container 3 is disposed above the suction hole 10 in the radial direction through the mouth portion 3a, and above the suction hole 10, and radially outward from the outer peripheral surface of the mouth portion 3a. And an annular protrusion 11 extending along the circumferential direction.

  The lower part of the mouth 3a of the outer container 3 has a slightly larger diameter than the annular protrusion 11 of the upper part of the mouth 3a.

  The discharge plug 6 includes a mounting cylinder 14 that is mounted on the radially outer side of the mouth 4a of the container body 4, a seal cylinder 15 that is fitted on the radially inner side of the mouth 4a, and a discharge cylinder in which the discharge port 5 is formed. 16 and a valve cylinder member 23 held in the discharge cylinder 16. The mounting cylinder 14, the seal cylinder 15 and the discharge cylinder 16 are integrally formed, and the valve cylinder member 23 is formed separately from these.

The mounting cylinder 14 has a top cylinder shape and includes a top wall 14a and a peripheral wall 14b.
The top wall 14a is in contact with the upper end opening edge of the mouth portion 4a of the container body 4 from above. A central portion in the radial direction (portion located on the container axis O) of the top wall 14a is opened, and a discharge cylinder 16 is erected from the inner peripheral edge of the top wall 14a so as to cover the opening portion. Yes. Further, the seal cylinder 15 is suspended from the top wall 14a and fitted into the mouth portion 4a.

  The lower end portion of the peripheral wall 14b is fitted on the radially outer side of the lower portion of the mouth portion 4a. In the figure, what is indicated by a broken line at the lower end portion of the peripheral wall 14b is the outer peripheral surface of the lower portion of the mouth portion 3a of the outer container 3, and a fastening allowance is provided between the peripheral wall 14b and the mouth portion 3a. It has been. By providing such an allowance, relative rotation in the circumferential direction between the mouth portion 4a of the container body 4 and the mounting cylinder 14 is restricted or suppressed. In addition, an annular protrusion 17 that protrudes radially inward and extends along the circumferential direction is formed at the lower end portion of the inner circumferential surface of the circumferential wall 14b.

  Further, as described above, the lower end portion of the peripheral wall 14b of the mounting cylinder 14 is fitted to the lower portion of the mouth portion 4a, and the annular protrusion 17 is brought into close contact with the outer peripheral surface of the mouth portion 4a, thereby An airtight seal portion is configured together with a configuration by tightening allowance (fitting), and communication between the peripheral wall 14b of the mounting cylinder 14 and the mouth portion 4a of the container body 4 is blocked from communication with the outside of the container.

An annular protrusion 19 that protrudes radially inward and extends along the circumferential direction is formed at the upper end of the inner peripheral surface of the peripheral wall 14b. The annular protrusion 19 is engaged with the annular protrusion 11 of the mouth 4a from below. Match.
Further, in the peripheral wall 14b, a communication hole 20 is formed at a position corresponding to the intake hole 10 of the mouth portion 4a so as to penetrate the peripheral wall 14b in the radial direction. In the illustrated example, the communication hole 20 is coaxial with the central axis of the intake hole 10, that is, so as to correspond to the position along the container axis O direction of the intake hole 10 and the position along the circumferential direction. 10 are arranged outside in the radial direction.

  An annular restricting projection 21 that protrudes radially outward and extends in the circumferential direction is formed on the outer peripheral surface of the peripheral wall 14 b above the communication hole 20. In addition, an annular seal protrusion 22 that protrudes radially outward and extends along the circumferential direction is formed below the communication hole 20 on the outer peripheral surface of the peripheral wall 14b.

The discharge cylinder 16 has a top cylinder shape, and includes a top wall 16a and a peripheral wall 16b. In the illustrated example, the discharge cylinder 16 has a smaller diameter than the seal cylinder 15.
The top wall 16a is formed with a discharge hole 24 that penetrates the top wall 16a in the container axis O direction and has the inside serving as the discharge port 5. A locking column 25 extending along the container axis O direction protrudes downward from the discharge hole 24 at the lower portion in the discharge hole 24 of the top wall 16a. The locking column 25 protrudes radially inward from the inner peripheral surface of the discharge hole 24 and is supported by a plurality of support ribs 26 formed at intervals in the circumferential direction. Is arranged.

  A male screw portion 27 is formed on the outer peripheral surface of the peripheral wall 16b. An annular valve seat 28 that protrudes radially inward and extends along the circumferential direction is formed at the upper end portion of the inner peripheral surface of the peripheral wall 16b, and the discharge valve 7 is located on the upper side of the valve seat 28. It is contact | abutting so that separation | spacing is possible. The valve seat 28 and the discharge valve 7 are in liquid-tight contact with each other, so that the discharge port 5 and the inside of the inner container 2 are blocked so as to communicate with each other. An annular locking projection 29 that protrudes radially inward and extends along the circumferential direction is formed below the valve seat 28 on the inner circumferential surface of the circumferential wall 16b.

  The valve tube member 23 is a lip shape extending from the top surface (top surface) of the main body 30 to the radially outer side, and the main body portion 30 having a top shape, the enlarged diameter portion 31 provided on the lower outer periphery of the main body portion 30. The discharge valve 7 is integrally provided. The valve cylinder member 23 is formed of a soft material that can be elastically deformed, such as nitrile rubber, butyl rubber, silicon rubber, elastomer, urethane, and the like.

  The valve cylinder member 23 is inserted into the discharge cylinder 16 from the lower side, and the enlarged diameter portion 31 is pushed above the locking projection 29 of the peripheral wall 16b while the top surface is pressed against the lower end surface of the locking column 25. As a result, it is held in the discharge cylinder 16 in a state of being prevented from coming out downward. In this state, the outer peripheral edge portion of the discharge valve 7 is in close contact with the valve seat 28 protruding from the upper inner periphery of the peripheral wall 16b in a liquid-tight and air-tight state from above.

  A plurality of communication holes 32 are formed in the peripheral wall of the main body portion 30 of the valve tube member 23 while passing through the peripheral wall in the radial direction and spaced in the circumferential direction. The communication hole 32 is formed so as to gradually increase in diameter toward the outer side in the radial direction, and the contents in the container body 4 reach the position just below the discharge valve 7 through the communication hole 32.

  The discharge valve 7 is a check valve that restricts the flow of fluid from the upper side (discharge port 5 side) to the lower side (inner container 2 side) while allowing the flow in the opposite direction. That is, the discharge valve 7 has an outer peripheral edge seated on the valve seat 28 in the discharge cylinder 16 so as to be separable from the upper side, and is elastically deformable toward the upper side. Specifically, the discharge valve 7 is seated on the valve seat 28 in a state where the outer peripheral edge portion is elastically deformed upward, so that the outer peripheral edge portion is raised above the valve seat 28 by elastic restoring force. From close.

  The seal member 9 has a cylindrical shape and is formed so as to cover a portion other than the upper end portion of the peripheral wall 14b of the mounting cylinder 14 from the radially outer side. The seal member 9 is slidable at least in the container axis O direction with respect to the mounting cylinder 14 fixed to the mouth portion 4a of the container body 4. In the illustrated example, the seal member 9 can move (rotate) in the circumferential direction with respect to the mounting cylinder 14.

  An annular seal protrusion 33 that protrudes radially inward and extends along the circumferential direction is formed at the upper end of the inner peripheral surface of the seal member 9. The seal protrusion 33 abuts on the outer peripheral surface of the peripheral wall 14 b of the mounting cylinder 14 in an airtight manner so as to be slidable between the restriction protrusion 21 and the seal protrusion 22. Further, the seal protrusion 22 of the mounting cylinder 14 is slidably and airtightly contacted below the seal protrusion 33 on the inner peripheral surface of the seal member 9.

  The seal member 9 is slidable upward with respect to the mounting cylinder 14 until the seal projection 33 abuts on the regulation projection 21 (see FIG. 2), and the lower end opening edge of the seal member 9 is the shoulder of the container body 4 It can be slid downward with respect to the mounting cylinder 14 until it comes into contact with the portion (see FIG. 1). The seal member 9 may be formed so as to be slidable downward with respect to the mounting cylinder 14 until the seal protrusion 33 abuts on the seal protrusion 22 of the mounting cylinder 14.

  In FIG. 4, the seal protrusion 33 of the seal member 9 is disposed at a position along the container axis O direction corresponding to the lower end portion of the communication hole 20 of the mounting cylinder 14, while the upper end portion of the communication hole 20 is The suction hole 10 communicates with the outside of the container through the communication hole 20. Thus, at least a part of the communication hole 20 is open (communication) to the outside of the container, and the arrangement region along the container axis O direction of the seal member 9 in which the intake hole 10 is open to the outside of the container is defined as the seal member. 9 is called the open position.

On the other hand, in FIG. 2, the seal protrusion 33 of the seal member 9 is disposed above the communication hole 20 of the mounting cylinder 14, and the communication hole 20 is formed on both sides (upper and lower sides) along the container axis O direction. ) Is sandwiched between the seal protrusions 33 and 22 so as to be blocked from the outside of the container. As a result, the intake hole 10 is also isolated from the outside of the container. As described above, an arrangement region along the container axis O direction of the seal member 9 in which the communication hole 20 is blocked from the outside of the container and the intake hole 10 is blocked from the outside of the container is referred to as a blocking position of the seal member 9.
Therefore, the opening position and the blocking position of the seal member 9 are not limited to the upper end position and the lower end position of the seal member 9 with respect to the mounting cylinder 14.

  In FIG. 1, a plurality of rib-like engaged portions 34 projecting radially outward and extending along the circumferential direction are formed at the upper end portion of the outer peripheral surface of the seal member 9 at intervals in the circumferential direction. Yes. In the illustrated example, the engaged portion 34 is disposed above the seal protrusion 33.

  The cap 8 has a top cylinder shape, and includes an upper cylinder portion 35 and a lower cylinder portion 36 having a diameter larger than that of the upper cylinder portion 35. As shown in FIG. 1, with the cap 8 attached to the discharge plug 6, the upper cylinder portion 35 covers the discharge cylinder 16, and the lower cylinder portion 36 includes the mouth 4a, the attachment cylinder 14, and The seal member 9 is covered.

The upper cylinder portion 35 has a topped two-stage cylinder shape, and includes a top wall 35a and a peripheral wall 35b. A convex portion 37 is formed on the lower surface of the top wall 35a so as to gradually protrude downward as it goes radially inward (center). The convex portion 37 is an upper end opening of the discharge hole 24 of the discharge cylinder 16. The discharge port 5 is blocked by coming into contact with the edge from above.
The upper part of the peripheral wall 35b has a smaller diameter than the lower part. On the inner peripheral surface of the lower portion of the peripheral wall 35b, a female screw portion 38 that is screwed into the male screw portion 27 of the discharge cylinder 16 is formed.

  The lower cylinder portion 36 has a topped two-stage cylinder shape, and includes a top wall 36a and a peripheral wall 36b. A central portion in the radial direction (portion located on the container axis O) of the top wall 36a is opened, and an upper cylindrical portion 35 is erected from the inner peripheral edge of the top wall 36a so as to cover the opening portion. ing.

  The upper part of the peripheral wall 36b has a smaller diameter than the lower part. An annular flange 39 that protrudes radially outward and extends in the circumferential direction is formed at the lower end portion of the upper portion of the peripheral wall 36b, and the flange 39 forms a lower end portion and a lower portion of the upper portion. Are connected to the upper end of the.

  In FIG. 1, the upper portion of the peripheral wall 36 b covers a region located above the communication hole 20 in the peripheral wall 14 b of the mounting cylinder 14 from the outside in the radial direction. The flange 39 is in contact with the upper end opening edge of the seal member 9 from above. The lower portion of the peripheral wall 36b covers the seal member 9 from the radially outer side.

  An annular engagement portion 40 that protrudes radially inward and extends in the circumferential direction is formed at the upper end portion of the inner peripheral surface of the lower portion of the peripheral wall 36b. The engaging portion 40 and the engaged portion 34 of the seal member 9 are engaged with each other in the container axis O direction, and when an external force of a predetermined level or more is applied from the engaged state. The engaging portion 40 is formed to be able to get over the engaged portion 34 in the container axis O direction.

  In this embodiment, the engaging portion 40 has an annular shape extending in the circumferential direction, and the engaged portion 34 has a rib shape divided in the circumferential direction. However, the present invention is not limited to this. Instead, at least one of the engaging portion 40 and the engaged portion 34 only needs to be formed in an annular shape extending in the circumferential direction.

Next, a procedure for discharging contents from the discharge container 1 will be described.
In FIG. 1, the cap 8 is attached to the discharge plug 6, and the seal member 9 is sandwiched between the flange 39 of the cap 8 and the shoulder portion of the container body 4 from the container axis O direction. In this state, the engaging portion 40 of the cap 8 is disposed below the engaged portion 34 of the seal member 9, and the communication hole 20 has an upper end opened.

  From this state, as shown in FIG. 2, the cap 8 is detached from the mouth portion 4a toward the upper side (arrow A direction) in the container axis O direction while rotating in the circumferential direction. At this time, the engaging portion 40 of the cap 8 engages with the engaged portion 34 of the seal member 9 from the lower side, and the cap 8 is further detached upward, so that the seal member 9 slides upward. Moving.

  As the seal member 9 slides upward, the seal protrusion 33 of the seal member 9 moves from above the opening of the communication hole 20 to above the communication hole 20. That is, the seal member 9 has the communication hole 20 and the intake hole 10 shown in FIG. 2 from the open position where the communication hole 20 and the intake hole 10 shown in FIG. 1 are opened to the outside of the discharge container 1. 1 reaches the blocking position for blocking the outside. In this way, the seal member 9 slides from the open position to the shut-off position, and the intake hole 10 is blocked by the seal member 9 and the intake hole 10 is shut off from the outside of the container.

  Further, when the seal member 9 slides upward, the seal projection 33 of the seal member 9 comes into contact with the regulation projection 21 of the mounting cylinder 14 from below. As a result, further upward sliding movement of the seal member 9 is restricted, and the cap 8 further moves upward with respect to the opening 4a, so that the engaging portion 40 of the cap 8 is covered by the seal member 9. Get over the engaging portion 34 upward.

  When the cap 8 is removed from the discharge plug 6 and the discharge port 5 is exposed, the discharge container 1 is placed in an inverted posture as shown in FIG. From this state, when the outer container 3 of the container body 4 is squeezed (elastically deformed), the inner container 2 is deformed together with the outer container 3 to reduce the volume. Along with this volumetric deformation, the internal pressure of the inner container 2 becomes a positive pressure, the discharge valve 7 is opened by this positive pressure, and the discharge port 5 communicates with the inside of the inner container 2. By opening the discharge valve 7, the contents stored in the inner container 2 are discharged from the discharge port 5.

  Thereafter, when the internal pressure of the inner container 2 decreases, the discharge valve 7 is closed and the communication between the discharge port 5 and the inside of the inner container 2 is blocked. When the discharge valve 7 is closed, the inner container 2 is sealed, and when the above-described squeeze deformation is released, the outer container 3 tries to restore and deform, but the intake hole 10 is closed as described above. The internal pressure between the outer container 3 and the inner container 2 becomes a negative pressure.

  After discharging the contents, as shown in FIG. 4, the discharge container 1 is returned to the upright posture, and the cap 8 is attached to the discharge plug 6 by the reverse procedure to that described above. That is, the cap 8 is attached toward the lower side (arrow B direction) in the container axis O direction with respect to the mouth portion 4a while rotating in the circumferential direction. At this time, the engaging portion 40 of the cap 8 is engaged with the engaged portion 34 of the seal member 9 from above, and the cap 8 is attached to the lower side, so that the seal member 9 is moved downward. Move the slide.

  When the seal member 9 slides downward, the seal protrusion 33 of the seal member 9 moves from the upper side of the communication hole 20 onto the opening of the communication hole 20. That is, the seal member 9 has the communication hole 20 and the intake hole 10 shown in FIG. 4 from the blocking position where the communication hole 20 and the intake hole 10 shown in FIG. 3 are blocked from the outside of the discharge container 1. It reaches an open position that opens to the outside of the discharge container 1. In this way, the seal member 9 slides from the blocking position to the open position, the intake hole 10 is opened from the blockage by the seal member 9, and the intake hole 10 communicates with the outside of the container.

  When the suction hole 10 communicates with the outside of the container, outside air is sucked between the outer container 3 and the inner container 2 through the suction hole 10 as shown by an arrow C in FIG. And the inner pressure between the inner container 2 becomes atmospheric pressure. In addition, as the outside air is sucked between the outer container 3 and the inner container 2 in this way, the volume reduction shape of the inner container 2 is maintained.

  Further, when the seal member 9 slides downward, the lower end opening edge of the seal member 9 comes into contact with the shoulder portion of the container body 4 from above. As a result, further downward sliding movement of the seal member 9 is restricted, and the cap 8 moves downward with respect to the mouth portion 4a, whereby the engaging portion 40 of the cap 8 is moved to the seal member 9. Get over the engaged portion 34 of the lower side.

  When the cap 8 is further screwed in, the convex portion 37 of the cap 8 comes into contact with the upper end opening edge of the discharge hole 24 of the discharge cylinder 16 from above to seal the discharge port 5, and the flange of the cap 8 39 comes into contact with the upper end opening edge of the seal member 9 from above, and further downward movement of the cap 8 relative to the mouth 4a is restricted.

When the cap 8 is detached from the discharge plug 6 after the cap 8 is mounted and the outer container 3 of the container body 4 is squeezed and deformed, the intake hole 10 is shut off by the above-described action. The inner pressure between the inner container 2 and the inner container 2 becomes a positive pressure, and the inner container 2 undergoes volumetric deformation due to this positive pressure. When the volume of the inner container 2 is reduced, the contents are discharged from the discharge port 5 by the same action as described above. Thereafter, when the squeeze deformation is released and the cap 8 is attached, the outside air is sucked between the outer container 3 and the inner container 2 by the same action as described above.
As described above, even when the squeezed deformed outer container 3 is restored and deformed, the inner container 2 is reduced in volume as the contents are reduced, and the outside air is prevented from flowing into the inner container 2. Thus, the deterioration of the contents is prevented and the preservability is enhanced.

  According to the discharge container 1 of the present embodiment described above, when the contents are discharged by removing the cap 8, the sealing member 9 keeps the intake hole 10 blocked from the outside of the container, and the cap is discharged after the contents are discharged. When 8 is mounted, the blocking of the intake hole 10 and the outside of the container by the seal member 9 is released, and the intake hole 10 is opened to the outside air. Thereby, even if the discharge amount of the contents is small and sufficient negative pressure is not generated between the inner container 2 and the outer container 3, the suction hole 10 can be forcibly opened by attaching the cap 8. In addition, air can be reliably sucked between the inner container 2 and the outer container 3 regardless of the discharge amount of the contents. Further, when the contents are discharged by removing the cap 8, the suction hole 10 of the outer container 3 can be reliably closed by the seal member 9, and the gap between the inner container 2 and the outer container 3 at the time of discharging the contents can be reduced. Since airtightness can be ensured, the volume of the inner container 2 can be reliably reduced when the outer container 3 is squeezed and a stable discharge amount can be ensured even when the discharge amount of the contents is small.

  Further, when the sealing member 9 slides and reaches the end of the blocking position or the opening position by the attaching / detaching operation of the cap 8, the engaging portion 40 of the cap 8 moves the engaged portion 34 of the sealing member 9 into the container. By overcoming the axis O direction (A direction or B direction), the cap 8 can be easily attached and detached. That is, for example, a complicated operation (such as circumferential alignment) is not required to release the engagement between the engaging portion and the engaged portion, and the operation is simple according to the present embodiment. It is.

  Further, since at least one of the engaging portion 40 and the engaged portion 34 is formed in an annular shape extending in the circumferential direction, the engaging portion 40 of the cap 8 and the seal are sealed in the attaching / detaching operation of the cap 8. In order to engage the engaged portion 34 of the member 9, it is possible to save the trouble of aligning them in the circumferential direction, and the cap 8 can be easily attached and detached.

  Further, in the present embodiment, even when the seal member 9 is located at the end of the open position (moving end to the lower side) with respect to the mounting cylinder 14, the intake hole 10 and the communication hole 20 are the seal member. 9 is covered from the outside in the radial direction. Thereby, the exposure of the air intake hole 10 and the communication hole 20 opened to the outside of the container is prevented, and entry of water droplets, dust and the like into the holes 10 and 20 is suppressed.

  Further, the cap 8 covers the mounting cylinder 14 and the seal member 9 in a state where the cap 8 is mounted on the discharge plug 6. This prevents dust or the like from entering between the mounting cylinder 14 and the seal member 9, and the dust or the like causes a problem in the sliding operation or close contact between the mounting cylinder 14 and the seal member 9. Is suppressed, and stable ejection is maintained.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

  For example, in the above-described embodiment, the peripheral wall 14b of the mounting cylinder 14 is interposed between the mouth 4a of the container body 4 and the seal member 9, but the peripheral wall 14b may not be used. That is, the opening 4a of the container body 4 and the sealing member 9 may be brought into direct contact with each other, and the sealing member 9 may be slid in the container axis O direction with respect to the opening 4a.

  In addition, the seal member 9 is cylindrical, but is not limited thereto. That is, for example, the seal member 9 is formed in a rectangular plate shape having an arc shape in cross section, and a pair of guide rail portions extending in the direction of the container axis O is formed on the peripheral wall 14b of the mounting cylinder 14. The seal member 9 may be configured to be slidable in the container axis O direction with respect to the mounting cylinder 14 by engaging both end portions in the circumferential direction with the guide rail portions.

  In addition, the container body 4 is a so-called Delami bottle in which the inner container 2 is detachably laminated on the inner surface of the outer container 3, but is not limited to this. For example, the inner container 2 and the outer container 3 May be a double container formed separately.

  In the above-described embodiment, the cap 8 is detachably attached to the discharge plug 6 by screwing the male screw portion 27 and the female screw portion 38. However, the present invention is not limited to this. The cap 8 may be detachably attached to the discharge plug 6 by cut fitting.

  In addition, it is possible to appropriately replace the constituent elements in the above-described embodiments with well-known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

DESCRIPTION OF SYMBOLS 1 Discharge container 2 Inner container 3 Outer container 4 Container main body 4a Mouth part 5 Discharge port 6 Discharge stopper 7 Discharge valve 8 Cap 9 Seal member 10 Intake hole 34 Engaged part 40 Engagement part O Container shaft

Claims (3)

A flexible inner container that accommodates the contents and deforms in accordance with a decrease in the contents, and a container body that includes the inner container and an outer container that is elastically deformable;
A discharge stopper attached to the mouth of the container body and formed with a discharge port for discharging contents,
A discharge valve disposed in the discharge plug and configured to block communication between the discharge port and the inside of the inner container;
A cap that is detachably attached to the discharge plug and covers the discharge port;
A seal member disposed slidably in the container axial direction between the mouth of the container body and the cap;
The outer container is formed with an intake hole capable of sucking outside air between the inner container,
The seal member has an engaged portion that engages with an engaging portion provided in the cap in a container axial direction,
When the cap is separated from the mouth portion in the container axial direction, the engagement portion engages with the engaged portion, so that the seal member slides and the intake hole is moved into the suction hole. A discharge container characterized in that it reaches a blocking position for blocking the intake hole from the outside of the discharge container from an open position that opens to the outside of the discharge container. The discharge container according to claim 1,
The discharge container according to claim 1, wherein the engaging portion is formed to be able to climb over the engaged portion in the container axial direction. The discharge container according to claim 1 or 2,
At least one of the engaging part and the engaged part is formed in an annular shape extending around the container axis.

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