JP7333760B2 - discharge container - Google Patents

Description

The present invention relates to a dispensing container.

Conventionally, an inner container containing contents, a dispenser having a push-down head formed with a discharge hole for discharging the contents, and a mouth portion of the inner container are screwed to fix the dispenser to the mouth portion. Dispensing containers are known that include a mounting cap and an outer container that covers an inner container. In this discharge container, the discharger and the inner container can be separated by removing the mounting cap from the inner container after the contents of the inner container have been used up. As a result, the inner container can be replenished with contents, or a new inner container can be attached with a discharger.

Japanese Unexamined Patent Application Publication No. 2003-40304

However, the conventional discharge container has room for improvement in reducing the amount of resin used.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a discharge container capable of reducing the amount of resin used.

The present invention employs the following means to solve the above problems. That is, the discharge container of the present invention comprises an inner container for containing contents, a discharger having a push-down head formed with a discharge hole for discharging the contents, and a mouth portion of the inner container which is screwed into the discharge container. A mounting cap for fixing a discharger to the mouth, and an outer container made of a resin material and covering the inner container are provided. A neck ring is formed, the outer container is formed in a capped tubular shape having an annular top wall portion and a peripheral wall portion, the mouth portion is inserted into the top wall portion, and the upper surface of the top wall portion The top wall portion is provided with an outer fitting portion that abuts on or is close to the lower end opening edge of the mounting cap and that is detachably fitted onto the neck ring, and the top wall portion and the mouth portion are engaged with each other. By joining together, a first anti-rotation portion and a second anti-rotation portion are separately formed for restricting relative movement of the outer container and the inner container in the circumferential direction, the top wall portion has rigidity, and It is formed thicker than at least a portion of the peripheral wall portion.

In the present invention, at least a portion of the peripheral wall is formed thinner than the top wall. Therefore, the amount of resin used can be reduced.
Of the outer container formed in a capped cylindrical shape, the upper end portion that is gripped when the inner container is attached to or detached from the outer container and when the push-down head of the dispenser is pressed has rigidity and is difficult to deform. Since it is the top wall, it is possible to prevent deterioration of operability due to thinning of at least a part of the peripheral wall.
Since the top wall portion is provided with the outer fitting portion detachably fitted to the neck ring, it is possible to prevent the inner container from being displaced in the vertical direction with respect to the outer container.
Since the upper surface of the rigid top wall portion is in contact with or close to the lower opening edge of the mounting cap, when the push-down head of the dispenser is pushed down to discharge the contents from the discharge hole, the mounting cap does not move. The lower edge of the opening is supported by the upper surface of the top wall portion, thereby preventing the neck ring from coming off downward from the outer fitting portion.
Since the top wall portion and the mouth portion are separately formed with the first anti-rotation portion and the second anti-rotation portion that engage with each other, it is possible to restrict the relative movement of the outer container and the inner container in the circumferential direction. In the state where the inner container is attached to the outer container, for example, when attaching and detaching the attachment cap to and from the mouth of the new inner container, and when removing the lid screwed to the mouth of the new inner container from the mouth, Since the inner container is restricted from co-rotating with the outer container, these caps can be removed from the opening while the inner container is attached to the outer container.

The outer fitting portion may be separate from the top wall portion.

In this case, since the outer fitting part is separate from the top wall part, it is possible to make it difficult to restrict the shape of the outer fitting part, for example, and to easily form the outer fitting part. .

The outer fitting portion may be formed in a plate shape with front and back surfaces facing in the radial direction, and may be provided in plurality at intervals in the circumferential direction.

In this case, since the outer fitting portion is formed in a plate-like shape with front and back surfaces oriented in the radial direction, and is provided with a plurality of intervals in the circumferential direction, when the neck ring is attached to or detached from the outer fitting portion, the outer fitting portion can be easily removed. The fitting portion can be easily elastically deformed in the radial direction, and the neck ring can be easily attached to and detached from the outer fitting portion.

The peripheral wall portion includes a body tube that is thinner than the top wall portion, and a column portion that abuts on the inner peripheral surface of the body tube, has rigidity, and extends downward from the top wall portion. A plurality of the pillars may be provided at intervals in the circumferential direction, and the lower edges of the plurality of pillars may form a grounding portion that allows the discharge container to stand on its own.

In this case, since the peripheral wall portion abuts against the inner peripheral surface of the main tube and has rigidity and includes a column portion extending downward from the top wall portion, the peripheral wall portion can be easily gripped. .
Since the lower edges of the plurality of pillars form a grounding portion that allows the discharge container to stand on its own, the self-sustainability of the discharge container can be reliably improved.

According to this invention, the amount of resin used can be reduced.

1 is a partial longitudinal sectional view of a discharge container shown as a first embodiment according to the present invention; FIG. FIG. 6 is a partial vertical cross-sectional view of a discharge container shown as a second embodiment according to the present invention; 3 is a cross-sectional view taken along line III-III of FIG. 2; FIG.

A discharge container according to a first embodiment of the present invention will be described below with reference to the drawings.
The discharge container 1 according to this embodiment includes an inner container 11, a discharger 12, a mounting cap 13, and an outer container 14, as shown in FIG.

The inner container 11 is formed in a cylindrical shape with a bottom, and the mounting cap 13 and the outer container 14 are formed in a cylindrical shape with a top. The inner container 11, the mounting cap 13 and the outer container 14 are arranged coaxially with a common axis. Hereinafter, the common axis is referred to as the container axis O, along the container axis O, the mouth portion 21 side of the inner container 11 is referred to as the upper side, the bottom portion 22 side is referred to as the lower side, and the direction along the container axis O is referred to as the vertical direction. Also, the direction crossing the container axis O when viewed from above and below is called the radial direction, and the direction rotating around the container axis O is called the circumferential direction.

Contents are accommodated in the inner container 11 . A flange-shaped neck ring 15 protruding radially outward is formed at the mouth portion 21 of the inner container 11 . A male threaded portion is formed on the outer peripheral surface of the mouth portion 21 at a portion positioned above the neck ring 15 . The body portion 29 of the inner container 11 is formed so as to be deformable to reduce its volume as the content is reduced. The inner container 11 is integrally formed of, for example, polyethylene terephthalate, and the thickness of the body portion 29 is, for example, 0.5 mm or less. It should be noted that the trunk portion 29 may adopt a structure that does not undergo volume reduction and deformation as the contents decrease.

The ejector 12 includes a stem (not shown) provided so as to be movable downward in an upwardly biased state, a push-down head 17 attached to the upper end of the stem and formed with an ejection hole 16 for ejecting contents, and a stem. It has a piston (not shown) linked to vertical movement, and a cylinder 28 in which the piston is fitted so as to be vertically slidable. When the push-down head 17 is pushed down, the stem and piston are lowered, and the contents in the cylinder 28 are discharged from the discharge hole 16 . When the depression of the depression head 17 is released, the stem and the piston are lifted, and the contents in the inner container 11 are sucked up into the cylinder 28 . A flange portion 28 a is formed at the upper end portion of the cylinder 28 so as to protrude radially outward and is arranged at the upper end opening edge of the mouth portion 21 of the inner container 11 .
A mounting cap 13 is mounted on the dispenser 12 . The mounting cap 13 is fitted onto the flange portion 28 a of the cylinder 28 . The mounting cap 13 is screwed onto the mouth portion 21 of the inner container 11 to secure the dispenser 12 to the mouth portion 21 . The top wall portion of the mounting cap 13 sandwiches the flange portion 28a of the cylinder 28 between the upper end opening edge of the mouth portion 21 and the top wall portion in the vertical direction.

The outer container 14 is made of a resin material and covers the inner container 11 . The outer container 14 has an annular top wall portion 23 and a peripheral wall portion 24 .

The peripheral wall portion 24 is formed in a cylindrical shape and arranged coaxially with the container axis O. As shown in FIG. A lower opening edge of the peripheral wall portion 24 is positioned below the bottom portion 22 of the inner container 11 . The upper end portion of the peripheral wall portion 24 and the outer peripheral edge portion of the top wall portion 23 are connected to each other.
The outer container 14 can be obtained, for example, by forming a cylindrical body having a peripheral wall portion 24 by extrusion molding and then forming the top wall portion 23 by compression molding, injection molding, or the like.

The top wall portion 23 has rigidity and is formed thicker than at least a portion of the peripheral wall portion 24 . In the illustrated example, the peripheral wall portion 24 is formed thinner than the top wall portion 23 over the entire area. The top wall portion 23 is arranged coaxially with the container axis O, and is formed in the shape of an annular plate whose front and back surfaces face up and down. The inner diameter of the top wall portion 23 is larger than the outer diameter of the lid screwed onto the mouth portion 21 of the new inner container 11 and smaller than the outer diameter of the lower end opening edge of the mounting cap 13 .

The mouth portion 21 is inserted into the top wall portion 23 . The male threaded portion of the mouth portion 21 is positioned above the upper surface of the top wall portion 23 , and the neck ring 15 is positioned below the lower surface of the top wall portion 23 . The upper surface of the top wall portion 23 is in contact with or close to the lower opening edge of the mounting cap 13 . The inner peripheral edge of the top wall portion 23 and the outer peripheral edge of the neck ring 15 face each other in the vertical direction.

A first anti-rotation portion 26 and a second anti-rotation portion 27 that restrict relative movement of the outer container 14 and the inner container 11 in the circumferential direction by engaging with each other are provided on the top wall portion 23 and the mouth portion 21 respectively. formed. The first anti-rotation portion 26 protrudes downward from the lower surface of the inner peripheral edge portion of the top wall portion 23 , and the second anti-rotation portion 27 protrudes upward from the upper surface of the neck ring 15 . The second anti-rotation portion 27 protrudes radially outward from the outer peripheral surface of the mouth portion 21 . A plurality of each of the first anti-rotation portion 26 and the second anti-rotation portion 27 are provided.

The top wall portion 23 is provided with an outer fitting portion 25 detachably fitted to the neck ring 15 . The outer fitting portion 25 is formed in a plate-like shape with front and back surfaces oriented in the radial direction, and a plurality of outer fitting portions 25 are provided at intervals in the circumferential direction. In addition, the outer fitting portion 25 may be formed in a cylindrical shape continuously extending over the entire length in the circumferential direction. The outer fitting portion 25 is formed so as to be elastically deformable in the radial direction. The outer fitting portion 25 is formed with a locking projection 25 a that protrudes radially inward and is undercut-fitted to the neck ring 15 . The inner surface of the upper portion of the outer fitting portion 25 facing radially inward is supported by the first anti-rotation portion 26 .

In the illustrated example, the outer fitting portion 25 is separate from the top wall portion 23 . Note that the outer fitting portion 25 may be formed integrally with the top wall portion 23 .
The outer fitting portion 25 is formed integrally with a connecting plate 31 arranged on the lower surface of the top wall portion 23 and a fitting cylinder 32 fitted in the upper end portion of the peripheral wall portion 24 . The connecting plate 31 and the fitting cylinder 32 extend continuously over the entire length in the circumferential direction. The outer fitting portion 25 protrudes downward from the inner peripheral edge portion of the connecting plate 31 . A plurality of outer fitting portions 25 are provided at intervals in the circumferential direction over the entire length of the connecting plate 31 in the circumferential direction. The fitting tube 32 protrudes downward from the outer peripheral edge of the connecting plate 31 . The outer peripheral surface of the fitting tube 32 and the inner peripheral surface of the peripheral wall portion 24 may be fixed by, for example, double-sided tape or adhesive. The upper surface of the connecting plate 31 and the lower surface of the top wall portion 23 may be fixed by, for example, double-sided tape or adhesive.

As described above, according to the discharge container 1 according to this embodiment, at least a portion of the peripheral wall portion 24 is formed thinner than the top wall portion 23, so that the entire peripheral wall portion 24 has a rigid top. The amount of resin used can be reduced compared to the case where the thickness is equal to the thickness of the wall portion 23 .
The upper end portion of the outer container 14 formed in the shape of a truncated cylinder, which is gripped when attaching and detaching the inner container 11 to and from the outer container 14 and when pressing down the push-down head 17 of the discharger 12, has rigidity. Since the top wall portion 23 is hard to be deformed, it is possible to prevent deterioration of operability caused by thinning at least a part of the peripheral wall portion 24 .

Since the top wall portion 23 is provided with the outer fitting portion 25 detachably fitted to the neck ring 15, it is possible to suppress the vertical positional displacement of the inner container 11 with respect to the outer container 14. .
Since the upper surface of the rigid top wall portion 23 is in contact with or close to the lower opening edge of the mounting cap 13 , when the push-down head 17 of the dispenser 12 is pushed down to eject the contents from the ejection hole 16 In addition, the lower opening edge of the mounting cap 13 is supported by the upper surface of the top wall portion 23, thereby preventing the neck ring 15 from coming off the outer fitting portion 25 downward.

A first anti-rotation portion 26 and a second anti-rotation portion 27 that are engaged with each other are separately formed on the top wall portion 23 and the mouth portion 21, so that relative movement of the outer container 14 and the inner container 11 in the circumferential direction is prevented. In the state where the inner container 11 is attached to the outer container 14, for example, when the attachment cap 13 is attached to and detached from the mouth portion 21, and when the attachment cap 13 is screwed to the mouth portion 21 of the new inner container 11, When the lid is removed from the mouth portion 21, the rotation of the inner container 11 with the outer container 14 is restricted. can be removed from the mouth portion 21.

Since the outer fitting portion 25 is separate from the top wall portion 23, it is possible to make it difficult to restrict the shape of the outer fitting portion 25, for example, and to easily form the outer fitting portion 25. can.

Since the outer fitting portion 25 is formed in a plate-like shape with front and back surfaces facing in the radial direction, and is provided with a plurality of spaced intervals in the circumferential direction, when the neck ring 15 is attached to and detached from the outer fitting portion 25, the outer fitting portion 25 can be easily attached to the outer fitting portion 25. The fitting portion 25 can be easily elastically deformed in the radial direction, and the neck ring 15 can be easily attached to and detached from the outer fitting portion 25 .

Next, a discharge container 2 according to a second embodiment of the invention will be described with reference to FIGS. 2 and 3. FIG.
In the second embodiment, the same reference numerals are assigned to the same components as in the first embodiment, the description thereof is omitted, and only the different points will be described.

In the present embodiment, the top wall portion 41 of the outer container 14 includes a top plate 41a formed in a ring plate shape whose front and back surfaces face up and down, a cylindrical wall 41b extending downward from the outer peripheral edge of the top plate 41a, It has
The top plate 41a and the cylindrical wall 41b are arranged coaxially with the container axis O. As shown in FIG. A connecting plate 31 is arranged on the lower surface of the top plate 41a. The fitting cylinder 32 is undercut fitted into the cylinder wall 41b. The vertical positions of the lower end opening edge of the cylinder wall 41b and the upper end of the body portion 29 are equal to each other.

The peripheral wall portion 42 of the outer container 14 is in contact with a body tube 42a formed thinner than the top wall portion 41 and the inner peripheral surface of the body tube 42a, has rigidity, and extends downward from the top wall portion 41. and an extending column portion 42b.
The inner surface facing radially inward and the outer surface facing radially outward of the column portion 42b are connected to the inner peripheral surface of the cylindrical wall 41b and the outer peripheral surface of the cylindrical wall 41b, respectively, in the vertical direction with substantially no difference in level. ing. The outer surface of the column portion 42b is fixed to the inner peripheral surface of the main tube 42a by bonding, welding, or the like. The vertical positions of the lower end edge of the column portion 42b and the lower end opening edge of the main tube 42a are equal to each other. A plurality of pillars 42b are provided at intervals in the circumferential direction, and the lower edges of the plurality of pillars 42b form a grounding portion that allows the discharge container 2 to stand on its own. A reinforcing portion may be provided to integrally connect the plurality of pillars 42b over the entire length in the circumferential direction.

A ridge portion 42c that continuously extends over the entire length in the vertical direction is formed in a circumferential intermediate portion of one of the plurality of column portions 42b. The main tube 42a has a pair of peripheral edges that continuously extend over the entire length in the vertical direction, and these peripheral edges are abutted against the ridges 42c from both sides in the peripheral direction. That is, the ridge portion 42c is circumferentially sandwiched between a pair of peripheral edges of the main tube 42a.

The outer container 14 has a main body tube 42a formed by rolling a sheet body around the container axis O while providing a slight gap between a pair of peripheral edges, and is set in the cavity. The column portion 42b can be obtained by injection molding.

As described above, according to the discharge container 2 according to the present embodiment, it is possible to reduce the amount of resin used, etc., like the discharge container 1 according to the first embodiment.
Furthermore, since the peripheral wall portion 42 abuts against the inner peripheral surface of the main tube 42a and has rigidity and is provided with the column portion 42b extending downward from the top wall portion 41, the peripheral wall portion 42 can be easily gripped. can do.
Since the lower edges of the plurality of pillars 42b form a grounding portion that allows the discharge container 2 to stand on its own, the self-sustainability of the discharge container 2 can be reliably improved.

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

The outer fitting portion 25 does not have to form the locking protrusion 25a.
The inner surface facing radially inward at the upper portion of the outer fitting portion 25 may be spaced radially outward from the first detent portion 26 .

In addition, it is possible to appropriately replace the components in the above embodiments with known components without departing from the scope of the present invention, and the above embodiments and modifications may be combined as appropriate.

Reference Signs List 1, 2 Discharge container 11 Inner container 12 Discharger 13 Mounting cap 14 Outer container 15 Neck ring 16 Discharge hole 17 Depression head 21 Mouth 23, 41 Top wall
24, 42 Peripheral wall portion 25 Outer fitting portion 26 First detent portion 27 Second detent portion 42a Body cylinder 42b Column portion

Claims (3)

an inner container in which contents are accommodated;
a dispenser having a push-down head formed with a discharge hole for discharging contents;
a mounting cap screwed onto the mouth of the inner container to fix the dispenser to the mouth;
an outer container formed of a resin material and covering the inner container;
A flange-shaped neck ring protruding radially outward is formed at the mouth,
The outer container is formed in a capped tubular shape having an annular top wall portion and a peripheral wall portion,
the mouth is inserted into the top wall;
the upper surface of the top wall part is in contact with or close to the lower opening edge of the mounting cap,
The top wall portion is provided with an outer fitting portion detachably fitted to the neck ring,
A first anti-rotation portion and a second anti-rotation portion are separately formed on the top wall portion and the mouth portion to restrict relative movement of the outer container and the inner container in the circumferential direction by engaging with each other. ,
the top wall has rigidity and is formed thicker than at least a portion of the peripheral wall ;
The peripheral wall portion
a body cylinder formed thinner than the top wall;
a column portion that abuts against the inner peripheral surface of the main tube, has rigidity, and extends downward from the top wall portion;
A plurality of the pillars are provided at intervals in the circumferential direction,
A discharge container, wherein the lower edges of the plurality of pillars form a grounding portion that allows the discharge container to stand on its own . The discharge container according to claim 1, wherein the outer fitting portion is separate from the top wall portion. The discharge container according to claim 1 or 2, wherein the outer fitting portion is formed in a plate shape with front and back surfaces facing in the radial direction, and a plurality of the outer fitting portions are provided at intervals in the circumferential direction.

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