WO2021149331A1 - Separable/disposable spray container, and content spraying unit - Google Patents

Abstract

Provided is a spray container which, after the contents therein have been used, can be separated by removing a pump from the container with a small amount of force.　An engaging part is disposed around a button of a pump unit such that, by pressing the button, it is possible to press a fastening ring where the pump unit is caulked to a neck-shaped part of the container. Therefore, the pump unit can be removed from the neck-shaped part of the container after all of the contents in the spray container have been used.

Description

Disposable spout container and content spouting unit

The present invention relates to a structure in which a pump attached to an opening of a container and ejecting the contents in the container cannot be removed from the container at the time of use, and can be removed from the container after use to separate the container from the pump.

A spouting container with a pump attached to the opening of the container that stores the contents is widely used. When such a ejection container is operated by pushing down the pump or the like, the contents in the container are sucked up by the action of the pressure of the pump and ejected from the hole at the tip of the pump. It is known that the ejection container has a structure in which the ejection unit is detachably attached to the container by screwing or the like so that the contents can be replenished or replaced.

On the other hand, in the fields of perfumes, cosmetics and pharmaceuticals, there are also known structures in which the pump cannot be removed from the container for reasons such as maintaining the quality of the contents. For example, a ejection container is sold in which a part of a pump component is plastically deformed by applying a force to crimp around the opening of the container.

Patent Document 1 proposes a structure in which a low-strength portion (breaking means) is provided in a ring-shaped member for fixing a pump to a neck portion of a container in order to recycle a pump (dispenser) portion after use. ing. It is stated that this allows the operator to quickly and cleanly remove the dispenser from the container by breaking the low-strength portion of the ring-shaped member.

Japanese Unexamined Patent Publication No. 2012-511480

In recent years, in order to reuse resources, there is a trend to thoroughly separate and collect garbage by material. Even for a spout container in which the spout unit cannot be removed from the container, if the container and the spout unit are made of different materials (for example, glass and metal, glass and resin, metal and resin, etc.), the spout unit is placed in the container after use. Must be removed from and discarded. Therefore, the user (consumer) may pry open the ejection unit with pliers after use to remove it from the neck portion of the container and dispose of it.

In the ejection container disclosed in Patent Document 1, the dispenser (pump) can be removed from the container by the operator applying force to break a part of the ring-shaped member. However, when the user (consumer) himself removes the dispenser from the container, the work of breaking the ring-shaped member is not easy for a weak user.

An object of the present invention is to provide an ejection container that can separate the pump by removing it from the container with a small force after using the contents.

In order to achieve the above object, the ejection container of the present invention includes a container having a neck-shaped portion around the opening, a pump unit for ejecting the contents of the container, and a fixture for fixing the pump unit to the neck-shaped portion. Has. The pump unit includes a cylinder with a part inserted in the opening, a piston with one end inserted in the cylinder, a button attached to the other end of the piston to push the piston into the cylinder, and an opening neck. It is arranged so as to cover the outer periphery of the shape portion in an annular shape, and is provided with a support ring that supports the cylinder at the edge of the opening. The fixture includes a fastening ring arranged so that the inner peripheral surface is in contact with the outer peripheral surface of the support ring, and a fixing ring arranged so as to be in contact with the outer peripheral surface of the fastening ring. The fastening ring and the fixing ring are provided with a locking mechanism for fixing the support ring to the neck-shaped portion. A portion of the button or piston comprises an engaging portion that engages the fastening ring at a predetermined angle when the button or piston is rotated about its axis. The lock mechanism has a structure that is released when the button is pushed while the button or a part of the piston is engaged with the fastening ring by the engaging portion, and the pump unit can be removed from the neck-shaped portion of the container. ..

According to the present invention, it is possible to provide an ejection container that can be separated by removing the pump from the container with a small force after using the contents.

FIG. 3 is a cross-sectional view of the ejection container 1 according to the embodiment of the present invention. An enlarged cross-sectional view of the upper part of the ejection container 1 according to the embodiment of the present invention. The perspective view of the pump unit 20 of an embodiment. (A) perspective view, (b) top view, (c) front view of the first protrusion of the button 23 of the embodiment. (A) Top view and (b) Front view of the second protrusion of the fastening ring 31 of the embodiment. The cross-sectional view which shows the procedure of removal of the pump unit 20 of the ejection container of (a-1)-(d) embodiment. An enlarged cross-sectional view of the ejection container 1 according to the embodiment of the present invention in a state where the fastening ring 31 is pushed down. It is explanatory drawing which shows the movement of both when the 1st protrusion 28 and the 2nd protrusion 29 collide with each other at the time of manufacturing the ejection container of (a)-(c) embodiment.

Hereinafter, the ejection container 1 that can be separately disposed of according to the embodiment of the present invention will be described.

FIG. 1 is an overall cross-sectional view of the ejection container 1, and FIG. 2 is an enlarged cross-sectional view of the upper part of the ejection container 1. FIG. 3 is a perspective view of the pump unit 20.

As shown in FIG. 1, the ejection container 1 of the present embodiment includes a container 10 having a neck-shaped portion 12 around an opening 11, a pump unit 20 for ejecting the contents of the container 10, and a pump unit 20 as a container 10. It is configured to include a fixture 30 for fixing to the neck-shaped portion 12 of the above. The pump unit 20 and the fixture 30 constitute a content ejection unit that ejects the contents in the container 10.

As shown in FIGS. 2 and 3, the pump unit 20 includes a cylinder 21 having a lower portion inserted inside the opening 11 of the container 10, a piston 22 having a tip 22a inserted into the cylinder 21, and a rear piston 22. It is provided with a button 23 fixed to the end 22b.

Elastic members (here, double springs 24a and 24b) are arranged around the piston 22 to support the cylinder 21 while urging the piston 22b.

A through hole 21b is provided at the tip (lower end) of the cylinder 21, and the through hole 21b is covered with a check valve 21c. Further, a pipe 21d for sucking up the contents of the container 10 is inserted into the through hole 21b. A cylinder inner cylinder 21e is fixed to the upper end of the cylinder 21.

Button 23 is provided with a spout 25. Here, the piston outer cylinders 22c and 22d are arranged around the piston 22 so as to surround the piston 22, and the piston 22 is fixed to the button 23 via the piston outer cylinder 22c. A minute gap 22e is provided between the outer peripheral surface of the piston 22 and the piston outer cylinders 22c and 55d, and the gap 22e guides the contents of the container 10 from the space 21a of the cylinder 21 to the button 23. It becomes a road.

Further, the piston outer cylinder 22c is configured to isolate the springs 24a and 24b from the piston 22 so that the springs 24a and 24b do not come into contact with the contents of the container 10.

Inside the button 23, a flow path 23a for guiding the contents reached through the gap 22b of the piston 22 to the ejection port 25 is provided.

A support ring 26 is fixed to the upper end of the cylinder 21 via a cylinder inner cylinder 21e. The support ring 26 has a shape that covers the outer circumference of the neck-shaped portion 12 in an annular shape from the edge of the opening 11. The support ring 26 is connected to the inner cylinder e of the cylinder 21 and the outer peripheral surface of the cylinder 21 at the upper part of the edge of the opening 11, and supports the cylinder 21 on the edge of the opening 11. Here, the packing 27 is arranged above the edge of the opening 21 and between the support ring 26.

The neck-shaped portion 12 of the container 10 has an edge portion 12a projecting outward in a ring shape, and a recess 12b (depth A in the radial direction) is provided at the lower portion of the edge portion 12a. At the lower end of the support ring 26, a convex portion 26a (height B (B <A) in the radial direction) that engages with the concave portion 12b is provided on the inner peripheral surface side.

The fixture 30 includes a fastening ring 31 arranged so that the inner peripheral surface is in contact with the outer peripheral surface of the support ring 26, and a fixing ring 32 arranged outside the fastening ring 31. The fastening ring 31 and the fixing ring 32 are provided with a locking mechanism 40 for fixing the support ring 26 to the neck-shaped portion 12.

Here, as an example, the lock mechanism 40 is provided on the outer peripheral surface of the fastening ring 31 at a position corresponding to the convex portion 26c (or concave portion) provided on the outer peripheral surface of the support ring 26 and the convex portion 26c (or concave portion). Includes the formed concave portion 31c (or convex portion). When the convex portion 26c (or concave portion) of the support ring engages with the concave portion 31c (or convex) on the inner peripheral surface of the fastening ring 31, the lock mechanism 40 is locked. Further, on the outer peripheral surface of the fastening ring 31, a pressing convex portion 31d is provided at the same position as the concave 31c. The fixed ring 32 is arranged so as to be in contact with the pressing convex portion 31d of the fastening ring 31, and by pressing the fastening ring 31 against the support ring 26 and crimping, the convex portion 26c and the concave portion 31c are locked by strengthening the engagement. The state is maintained, and the support ring 26 is fixed to the neck-shaped portion 12.

On the other hand, as shown in FIG. 3, the support ring 26 is provided with one or more notches 26b in the axial direction. Since the notch 26b is provided, the support ring 26 is deformed and narrowed in the radial direction when crimped by the fastening ring 31, and is firmly fixed to the neck-shaped portion 12.

In the present embodiment, the concave and convex portions 31c and 26c and the pressing convex portion 31d are provided in a ring shape along the circumferential direction of the inner peripheral surface of the fastening ring 31 and the outer peripheral surface of the support ring 26.

Explaining each part of the lock mechanism 40 in more detail, the pressing convex portion 31d is in contact with the fixed ring 32, so that the fastening ring 31 is pressed against the support ring 26 and is pressed by the pressing convex portion 31d, resulting in unevenness. Since 31c and 26c are fitted together, the strength with which the support ring 26 is crimped is increased. Further, since the convex portion 26c of the support ring 26 and the concave portion 31c of the fastening ring 31 are fitted, the support ring 26 cannot move upward in the axial direction. As a result, the lock mechanism 40 prevents the support ring 26 from coming off from the neck-shaped portion 12.

In addition, the lower end of the fastening ring 31 is at the same height as the lower end of the support ring 26, and is provided with a convex portion 31a (height C in the radial direction) that projects toward the inner peripheral surface side. As a result, the convex portion 26b at the lower end of the support ring 26 is thicker than the distance between the convex portion 31a of the fastening ring 31 and the neck-shaped portion 12, and the support ring 6 is formed between the convex portion 31a of the fastening ring 31 and the neck-shaped portion 12. It has a structure that cannot pass between them. Therefore, the support ring 26 realizes a structure that more firmly prevents the support ring 26 from moving upward in the axial direction.

As described above, the support ring 26 is not only pressed against the neck-shaped portion 12 by the fastening ring 31 by the locking mechanism 40, but is also prevented from moving in the axial direction and is fixed to the neck-shaped portion 12.

On the other hand, a fastening ring is attached to any part of the button 23, the piston 22 and the piston outer cylinder 22c at a predetermined angle when the button 23 or the piston 22 or the piston outer cylinder 22c is rotated about its axis. An engaging portion 28 that engages with 31 is provided.

Here, an example in which the engaging portion 28 is provided at the lower end of the outer peripheral surface of the button 23 as shown in FIG. 4A will be described. The button 23 is rotatably attached to the piston 22 and the piston outer cylinder 22c about a shaft, and the button 23 serves as an engaging portion 28 and is a first first protruding outward from the lower end of the outer peripheral surface of the button 23. It is provided with a protrusion (hereinafter referred to as a first protrusion 28) (see FIG. 4B).

As shown in FIG. 2, the fastening ring 26 has a height that reaches above the opening 11 of the container 10. As shown in FIGS. 5A and 5B, a second protrusion 29 having a shape capable of engaging with the first protrusion 28 is provided on the inner peripheral surface of the fastening ring 26 above the opening 11. There is.

Therefore, the user rotates the button 23 as shown in FIGS. 6 (a-1) and 6 (a-2), and the first protrusion 28 and the first protrusion 28 as shown in FIGS. 6 (b-1) and 6 (b-2). When the protrusion 29 of 2 is engaged and the button 23 is pushed in this state, the fastening ring 31 is pushed downward in the axial direction from between the support ring 26 and the fixed ring 32 (FIG. 6 (a-2). ), (B-2)).

As a result, as shown in FIG. 7, the concave 31c of the fastening ring 31 overcomes the fitting with the convex 26c of the support ring 26 and is displaced in the axial direction, so that the fitting state is eliminated. At the same time, the pressing convex portion 31d at the same position as the concave 31c of the fastening ring 31 moves to the position of the concave portion 12b below the edge portion 12a of the neck-shaped portion 12, so that the pressing convex portion 31d comes into contact with the fixed ring 32. However, since there is no support ring 26 inside the position, the support ring 26 is released from the crimping force applied by the fixed ring 32 to the support ring 26. As a result, as shown in FIG. 6C, the fixing ring 32 can be removed upward, and the support ring 26 can be removed from the neck-shaped portion 12 of the container 10.

As a result, the used pump unit 20 can be removed from the container 10 and separately disposed of.

Further, since the removed pump unit 20 still has the fastening ring 31 in the lowered state, the support ring 26 can be crimped by the fastening ring 31 even if the fixing ring 32 is covered. Therefore, the pump unit 20 cannot be fixed to the container 10 again. As a result, it is possible to replace the contents of the container 10 and prevent the pump 20 from being fixed and reused again, and the quality of the contents of the ejection container 1 can be guaranteed.

Here, the engaging portion 28 will be further described.

As shown in FIGS. 4 (b) and 5 (a), a plurality of first protrusions 28 of the engaging portion are provided at regular intervals (here, every 90 degrees) in the circumferential direction of the outer peripheral surface of the button 23. The second protrusion 29 is provided at a position corresponding to the first protrusion 28 on the inner peripheral surface of the fastening ring.

Further, one (here, the second protrusion 29) has a recess 29a in the circumferential direction and the other (the first) so that the first and second protrusions 28 and 29 can engage with each other. The protrusion 28) has a shape (here, a rhombus) that fits into the recess 29a.

Moreover, when the buttons 23 are rotated, the first and second protrusions 28 and 29 are second at a certain rotation angle, as shown in FIGS. 6 (a-1) and 6 (b-1). When the protrusion 28 of 1 is inserted into the recess 29a of the second protrusion 29 and fitted, and the button 23 is further rotated, the first protrusion 28 gets over the recess 29a of the second protrusion 29 and escapes. It is desirable to have a shape. Specifically, for example, it is desirable that the first protrusion 28 has a cross-sectional shape parallel to the outer peripheral surface of the button and is a rhombus having a size that can be inserted into the recess 29a of the second protrusion 29. As a result, when the button 23 is rotated to move the diamond-shaped first protrusion 28 in the circumferential direction, it can be easily inserted into the recess 29a regardless of the direction of rotation, and by further turning, the diamond-shaped first protrusion 28 can be inserted from the recess 29a. You can easily escape.

In this way, as the button 23 rotates, the first protrusion 28 and the second protrusion 29 change from the disengaged state to the engaged state and the disengaged state again. The button 23 can be further rotated even when the user rotates the button 23 to engage the first protrusion 28 and the second protrusion 29 during use. Therefore, it can be easily returned to the used state. As a result, it is possible to prevent the pump 20 from being accidentally removed from the container 10 during use.

Further, it is desirable that the bottom surface shape of the second protrusion 29 provided on the fastening ring 31 on the lower side in the axial direction is inclined with respect to the circumferential direction of the fastening ring 31. For example, the outer shape of the second protrusion 29 having a cross section parallel to the inner peripheral surface of the fastening ring 31 has a recess 29a cut out on the upper surface as shown in FIGS. 5 (b) and 6 (a-1). It is desirable to make it a rhombus.

With such a shape, when the pump unit 20 is attached to the neck-shaped portion 12 of the container 10 at the time of manufacturing and then the fastening ring 31 is press-fitted to the outside of the support ring 12 from above, FIG. 8A is shown. As shown in (c), the lower surface of the second protrusion 29 is inclined even when the second protrusion 29 is pushed in from just above the first protrusion 28. Therefore, the bottom surface of the second protrusion 29 slides on the upper surface of the first protrusion 28 and moves so as to escape in the circumferential direction. This makes it possible to prevent the phenomenon that the first protrusion 28 or the second protrusion 29 is damaged during manufacturing. Yield can be improved.

The material of the fixed ring 32 is preferably a material that is not easily deformed, and is preferably metal or glass in addition to resin. The material of the support ring 26 is preferably made of resin or metal so that it can be deformed. The material of the fastening ring 26 may be any material that locks the movement of the support ring 26 by engaging with the support ring 26 by the unevenness, and can move over the unevenness and unlock by pressing the button 23, for example. Resin or metal can be used. As the resin of each of the above parts, polypropylene or polyethylene can be used.

Further, by providing a groove in the axial direction on the inner peripheral surface of the fixed ring 32, the fastening ring 31 can be smoothly pushed down in the axial direction.

Here, the operation of each part when the ejection container 1 of the present embodiment is used and a series of operations when the pump unit 20 is removed after use will be described.

At the time of use, when the user presses the button 23, the piston 22 is pushed down in the direction of compressing the springs 24a and 24b, and the tip 22a of the piston 22 compresses the space 21a in the cylinder 21.

After that, when the user releases the button 23, the springs 24a and 24b extend and return to their original state, so that the space 21c of the cylinder 21 is decompressed, passes through the pipe 21d and the through hole 21b, and the contents of the container 10. An object fills the space 21c in the cylinder 21. The check valve 21c prevents the contents in the space 21c from flowing back and returning to the container 10.

When the user presses the button 23 again, the piston 22 is pushed down in the direction of compressing the springs 24a and 24b, and when the space 21c filled with the contents is compressed, the pressure in the space 21c rises and the space in the cylinder 21. The contents of 21a reach the button 23 through the gap between the cylinder 22 and the cylinder outer cylinder 22c, and are further ejected from the ejection port 25a through the flow path 23a in the button.

When all the contents are ejected and the contents are exhausted, the user removes the pump unit 20 from the container 10 in order to separate and dispose of the ejection container 1. Specifically, first, as shown in FIGS. 6 (a-1) and 6 (a-2), the user rotates the button 23 to attach the first protrusion 28 on the outer circumference of the button 23 to the fastening ring 31. It is aligned with the recess 29a of the second protrusion 29 and fitted (FIGS. 6 (b-1) and (b-2)).

In this state, when the user pushes the button 23 downward, the fastening ring 31 is pushed downward, and the crimping force is not applied from the fixed ring 32 to the support ring 26. Therefore, as shown in FIG. 6 (c). , The fixed ring 32 can be removed upward. After removing the fixing ring 32 upward, the user removes the pump unit 20 from the container 10 with the fastening ring 31 attached.

From the above, even if the material of the container 10 and the material of the pump unit are different, they can be separated and discarded.

Further, for sorting, the action of pushing down the button 23 requires a larger force than the force of pushing the button 23 at the time of use, but the button 23 is originally designed to be pushed down, and the user's force is efficiently applied to the fastening ring 31. Can be told to. Further, since the fastening ring 31 is pushed down while maintaining its shape, the fastening ring 31 can be pushed down with a smaller force than when it is broken, and the pump unit 20 can be removed.

As described above, according to the present embodiment, it is possible to provide the ejection container 1 which can be separated by removing the pump unit 20 from the container 10 with a small force after using the contents.

In the above-described embodiment, the locking mechanism 40 is provided with a ring-shaped convex portion 26c on the support ring 26 and a ring-shaped concave portion 31c on the fastening ring 31, and the fastening ring 31 overcomes the unevenness by pressing down the button 23. Although the structure in which the lock is released by being pushed down has been described, the present invention is not limited to such a lock mechanism 40. Any structure may be used as long as the mechanism can be released by pressing the button 23. For example, the fastening ring 31 may have a structure such as a pin instead of an annular structure, and may engage with and lock the support ring 26. In this case as well, the structure is such that the pin is released from the engagement with the support ring 26 when the button 23 is pressed down, so that the lock is released by pressing down the button 23 and the pump unit 20 can be removed. realizable.

1 ... Ejection container, 10 ... Container, 11 ... Opening, 12 ... Neck shape, 20 ... Pump unit, 21 ... Cylinder, 22 ... Piston, 22c ... Piston outer cylinder, 23 ... Button, 23a ... Flow path, 24a, 24b ... Spring, 25 ... Spout, 26 ... Support ring, 27 ... Packing, 28 ... Engagement part (first protrusion), 29 ... Second protrusion, 30 ... Fixture, 31 ... Fastening ring, 32 ... Fixing ring

Claims (14)

It has a container having a neck-shaped portion around the opening, a pump unit for ejecting the contents of the container, and a fixture for fixing the pump unit to the neck-shaped portion.
The pump unit is attached to a cylinder partially inserted into the opening, a piston having one end inserted into the cylinder, and the other end of the piston, and a button for pushing the piston into the cylinder. And a support ring arranged to cover at least a part of the outer periphery of the neck-shaped portion of the opening and supporting the cylinder at the edge of the opening.
The fixture includes a fastening ring arranged so that the inner peripheral surface is in contact with the outer peripheral surface of the support ring, and a fixing ring arranged so as to be in contact with the outer peripheral surface of the fastening ring.
The fastening ring and the fixing ring include a locking mechanism for fixing the support ring to the neck-shaped portion.
A portion of the button or piston comprises an engaging portion that engages the fastening ring at a predetermined angle when the button or piston is rotated about its axis.
The locking mechanism has a structure in which the button or a part of the piston is released when the button is pushed in a state where the button or a part of the piston is engaged with the fastening ring by the engaging portion, and the pump unit is the container. A spout container that is removable from the neck shape. In the ejection container according to claim 1, the locking mechanism is such that when the button is pushed in with the button or a part of the piston engaged with the fastening ring by the engaging portion, the fastening is performed. The ejection container is characterized in that the ring has a structure in which the pump unit can be removed from the neck-shaped portion of the container by being extruded in the axial direction from between the support ring and the fixed ring. The ejection container according to claim 1 or 2, wherein the support ring is provided with one or more notches in the axial direction. The ejection container according to any one of claims 1 to 3, wherein the button is rotatably attached to the piston about an axis.
The button includes, as the engaging portion, a first protrusion protruding outward from the outer peripheral surface of the button.
The fastening ring is arranged above the opening of the container, and the inner peripheral surface of the fastening ring above the opening is provided with a second protrusion that can engage with the first protrusion. A spouting container characterized by. The ejection container according to claim 4, wherein a plurality of the first protrusions are provided at regular intervals in the circumferential direction of the outer peripheral surface of the button, and the second protrusion is an inner peripheral surface of the fastening ring. The ejection container is provided at a position corresponding to the first protrusion of the above. The ejection container according to claim 4 or 5, wherein one of the first and second protrusions has a recess in the circumferential direction, and the other has a shape of fitting into the recess. The ejection container. The ejection container according to claim 6, wherein when the button is rotated, the other of the first and second protrusions is inserted into the recess of the one and fitted at a certain rotation angle. Further, the ejection container is characterized in that when the button is further rotated, the other has a shape of escaping from the recess of the one. The ejection container according to claim 6, wherein the second protrusion provided on the fastening ring has a bottom surface shape on the lower side in the axial direction that is inclined with respect to the circumferential direction of the fastening ring. The ejection container. The ejection container according to claim 8, wherein the second protrusion has a rhombic outer shape in a cross section parallel to the inner peripheral surface of the fastening ring, and the recess is cut out on the upper surface thereof. An ejection container characterized by its shape. The ejection container according to claim 8, wherein the first protrusion has a cross-sectional shape parallel to the outer peripheral surface of the button and is a rhombus having a size that can be inserted into the recess of the second protrusion. A spouting container characterized by. The ejection container according to any one of claims 1 to 10, wherein the lock mechanism has a convex portion or a concave portion provided on an outer peripheral surface of the support ring and a position corresponding to the convex portion or the concave portion. The locking mechanism includes a concave portion or a convex portion provided on the inner peripheral surface of the fastening ring, and the convex portion or the concave portion of the support ring engages with the concave portion or the convex portion of the inner peripheral surface of the fastening ring. Is locked
When the button or the piston is pushed by the engaging portion while the button or the piston is engaged with the fastening ring, the fastening ring is pushed downward in the axial direction over the convex portion or the concave portion of the support ring. A ejection container characterized by releasing the locked state. The ejection container according to claim 11, wherein the convex portion or concave portion of the support ring and the concave portion or convex portion of the fastening ring are the outer peripheral surface of the support ring and the inner peripheral surface of the fastening ring. An ejection container characterized in that it is provided in a ring shape along the circumferential direction. In the ejection container according to claim 11 or 12, a pressing convex portion is further provided on the outer peripheral surface of the fastening ring, and the pressing convex portion comes into contact with the fixed ring, whereby the fastening ring is formed. An ejection container characterized in that it is pressed against the support ring. It has a pump unit that ejects the contents of a container having a neck-shaped portion around the opening, and a fixture that fixes the pump unit to the neck-shaped portion.
The pump unit is attached to a cylinder partially inserted into the opening, a piston having one end inserted into the cylinder, and the other end of the piston, and a button for pushing the piston into the cylinder. And a support ring arranged to cover at least a part of the outer periphery of the neck-shaped portion of the opening and supporting the cylinder at the edge of the opening.
The fixture includes a fastening ring arranged so that the inner peripheral surface is in contact with the outer peripheral surface of the support ring, and a fixing ring arranged so as to be in contact with the outer peripheral surface of the fastening ring.
The fastening ring and the fixing ring include a locking mechanism for fixing the support ring to the neck-shaped portion.
A portion of the button or piston comprises an engaging portion that engages the fastening ring at a predetermined angle when the button or piston is rotated about its axis.
The locking mechanism has a structure in which the button or a part of the piston is released when the button is pushed in a state where the button or a part of the piston is engaged with the fastening ring by the engaging portion, and the pump unit is the container. A content ejection unit characterized by being removable from the neck shape.

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