JP2023163726A - Discharge device - Google Patents

Abstract

To stably and properly operate a push-down head even when drop impact or the like is applied.SOLUTION: There is provided a discharge device 1 which is configured in such a manner that a push-down head 30 can be switched between a restricted position where downward movement is restricted and an allowable position P2 where downward movement is allowed, a stopper projection 33 and a restricting projection 38 are formed on a head peripheral wall 32, a guide tube 24 is provided with a vertical groove 51 which allows the movement of the stopper projection at the allowable position, and a peripheral groove 52 in which the stopper projection is arranged at the restricted position, the bottom wall surface of the peripheral groove is a restricting wall 58 which restricts the downward movement of the stopper projection, a slide groove 26 which allows the movement of the restricting projection is formed in a restricting tube 23, a portion of the upper end opening edge of the restricting tube which is circumferentially adjacent to the slide groove is a restricting surface which restricts the downward movement of the restricting projection, and the restricting projection is arranged so as to face the slide groove in the vertical direction at the allowable position and so as to face the restricting surface in the vertical direction at the restricted position.SELECTED DRAWING: Figure 1

Description

The present invention relates to a dispensing device.

Conventionally, a stem is disposed inside the mouth of a container body so as to be movable downward in an upwardly biased state, a cylinder into which the stem is inserted, and a cylinder that slides vertically within the cylinder in conjunction with the vertical movement of the stem. Dispensers are known which include a removable piston and a push-down head, which is attached to the upper end of the stem and has a nozzle hole for dispensing the contents.
In this type of ejector, measures are taken to prevent the push-down head from being pressed down unexpectedly, for example, during product distribution, storage, and the like.

For example, as shown in Patent Document 1 below, a discharger is provided with a cover that is removably attached between a mounting cap that attaches a cylinder to the mouth of a container body and a push-down head, and that restricts the push-down operation of the push-down head. The vessel is known. However, in this case, it is necessary to attach and remove the cover every time the dispensing device is used, which tends to be time-consuming. Furthermore, it is necessary to store the removed cover alone, and there is a risk that the cover may be lost.

Therefore, as a measure to prevent the push-down head from being pressed down unexpectedly without using removable parts such as covers, it is possible to prevent the push-down operation by, for example, rotating the push-down head around the axis of the container. There is also known a dispensing device that is configured to be switchable between a restricted position in which the push button is pressed and a permissible position in which a push-down operation is permitted.
In this ejector, for example, a stopper protrusion is formed on the push-down head, and a vertical groove and a stopper recess are formed on a member combined with the mounting cap or the like. The stopper protrusion is disposed within the vertical groove and allowed to move downward when the push-down head is located at the allowable position. Further, the stopper protrusion is disposed within the stopper recess when the push-down head is located at the restriction position, thereby restricting downward movement.
Therefore, by simply switching the push-down head between the restricted position and the permissible position, it is possible to switch between preventing the push-down head from being accidentally pushed down and allowing the push-down operation.

Japanese Patent Application Publication No. 2009-078255

However, in the above-mentioned conventional ejector, when an external force such as a drop impact is applied to the push-down head during product distribution or storage, the push-down head may be strongly pushed in at the regulated position. In this case, for example, the push-down head may be pushed in excessively while the stopper protrusion is in strong contact with the stopper recess, resulting in inconveniences such as making it difficult for the push-down head to return to its original position. Therefore, it tends to be difficult to operate the push-down head stably and appropriately.

The present invention has been made in view of the above circumstances, and its purpose is to provide a dispensing device that can stably and appropriately operate a push-down head even when subjected to a drop impact or the like. It is to be.

(1) The dispensing device according to the present invention has a stem that is disposed so as to be movable downward in an upwardly biased state, and the dispensing device has a stem that is disposed so as to be movable downward in an upwardly biased state, and the dispensing device has a stem that is disposed so as to be movable downwardly in an upwardly biased state. a pump unit combined with the mouth of the body; a push-down head having a nozzle hole for discharging the contents, attached to the upper end of the stem and rotatable around the container axis in the container body; , a regulating tube that is combined with the mounting cap and extends upward, and a guide tube that surrounds the regulating tube from the outside in the radial direction and guides movement of the push-down head, the push-down head is , having a head circumferential wall surrounding the regulating cylinder from the outside in the radial direction, and being switchable by rotation around the container axis between a regulating position where downward movement is regulated and a permissible position where downward movement is permitted; A stopper protrusion formed to protrude radially outward and a regulation protrusion protruded radially inward and vertically opposed to the upper end opening edge of the regulation cylinder are formed on the head peripheral wall. A guide groove is formed in the guide tube to movably accommodate the stopper protrusion, and the guide groove is configured to allow the stopper protrusion to move downward when the push-down head is located at the permissible position. a vertical groove that allows a vertical groove to extend along the circumferential direction around the container axis and communicates with the vertical groove, and the stopper protrusion is arranged when the push-down head is located at the regulating position. a circumferential groove; the bottom wall surface of the circumferential groove is a regulating wall that restricts downward movement of the stopper protrusion by contacting the stopper protrusion from below; is formed such that a vertically elongated slide groove that allows downward movement of the regulation protrusion opens upward, and is adjacent to the slide groove in the circumferential direction among the upper end opening edges of the regulation cylinder. The portion is a regulating surface that restricts the downward movement of the regulating protrusion by contacting the regulating protrusion from below, and the regulating protrusion is formed when the pressing head is located at the permissible position. is arranged to face the slide groove in the vertical direction, and is arranged to face the regulation surface in the vertical direction when the push-down head is located at the regulation position. shall be.

According to the ejector according to the present invention, when the push-down head is located at the restriction position, the stopper projection is in contact with the restriction wall, thereby restricting the downward movement of the stopper projection. , the regulating protrusion faces the regulating surface in the vertical direction. As a result, even if an unexpected external force such as a drop impact is applied to the push-down head, the regulation protrusion comes into contact with the regulation surface, so that the external force acting on the push-down head can be received by the regulation cylinder. Therefore, it is possible to effectively prevent the push-down head from being pushed downward by an unexpected external force as in the conventional case.
Therefore, it is possible to prevent the stopper wall from strongly pressing against, for example, the restriction wall, and problems such as the push-down head becoming jammed are less likely to occur. Therefore, unlike the prior art, it is possible to prevent the push-down head from becoming difficult to return to its original position.

When discharging the contents, the push-down head is rotated around the container axis to move the push-down head from the restriction position to the allowable position. Thereby, the stopper protrusion can be moved from inside the circumferential groove to inside the vertical groove as the push-down head rotates. Therefore, the vertical groove can be used to allow the stopper protrusion to move downward. Further, as the push-down head rotates, the regulating protrusion can be moved from above the regulating surface to face the opening of the slide groove in the vertical direction. Thereby, downward movement of the regulating protrusion can be permitted by utilizing the vertical slide.
As a result, the push-down head can be pressed down against the upward bias of the stem, and the stem is pushed while moving the stopper protrusion downward in the vertical groove and moving the regulating protrusion downward in the slide groove. Can be lowered. As a result, the contents can be discharged through the nozzle hole using the pump section.

As mentioned above, the push-down head cannot be pressed down unless the push-down head is switched from the regulated position to the permissible position, so unexpected external forces such as dropping impacts may occur during product distribution or storage. This can prevent the contents from being unintentionally discharged. In particular, when the push-down head is positioned at the regulation position, the regulation cylinder combined with the mounting cap can be used to appropriately receive external force acting on the push-down head, so that the push-down head is pushed downward. can be effectively prevented from occurring.
Therefore, it is possible to prevent the push-down head from being jammed due to the stopper wall strongly pressing against the regulation wall, so the push-down head can be operated stably and appropriately, and the reliability of operation is improved. It can be used as a container. Further, a stopper protrusion is formed on the head peripheral wall toward the radially outer side, and a regulating protrusion is formed toward the radially inner side. Therefore, since the head circumferential wall has portions formed on both the outer circumferential surface and the inner circumferential surface to receive external forces, even if a strong external force such as a drop impact acts on the press-down head, the head circumferential wall may be deformed or otherwise inconvenient. can be effectively prevented. In this respect as well, it is possible to prevent the push-down head from being pushed downward.

(2) The regulating protrusion and the slide groove may be formed to extend in the circumferential direction.

In this case, since the regulating protrusion and the slide groove are formed to extend in the circumferential direction, for example, when the push-down head is located at the regulation position, an unexpected external force such as a drop impact may be applied to the push-down head. Even if the restriction protrusion is added, a large contact area between the restriction protrusion and the restriction surface can be ensured. Therefore, the external force acting on the push-down head can be received over a wide range by the regulating cylinder, and the push-down head can be more effectively prevented from being pushed downward. Furthermore, since a large contact area between the regulating protrusion and the regulating surface can be ensured, problems such as tilting of the push-down head are less likely to occur.
Furthermore, when the press-down head is pressed down at the permissible position, the regulating protrusion with a large circumferential width can be moved downward within the slide groove, so the press-down head can be pressed down stably with less rattling. I can do it. Therefore, it is possible to improve the operability.

(3) The regulating protrusion is formed to be vertically elongated and extends in the vertical direction, and is immovably inserted into the slide groove in the circumferential direction when the push-down head is pressed down at the permissible position. May be accommodated.

In this case, when the push-down head is pressed down at the permissible position, the regulating protrusion can be accommodated over the entire length of the slide groove, and can also be housed in the slide groove without being able to move in the circumferential direction. . Therefore, it is possible to suppress the shaking of the push-down head around the container axis during the operation of discharging the contents, and it is possible to smoothly push the push-down head downward. Therefore, it is possible to further improve the operability.

According to the present invention, even when a drop impact or the like is applied, the push-down head can be operated stably and appropriately, and a discharger with improved operational reliability can be obtained.

FIG. 3 is a longitudinal cross-sectional view of the ejector according to the present invention, showing a state in which the push-down head is located at an allowable position. 2 is a cross-sectional view taken along line AA shown in FIG. 1. FIG. FIG. 2 is a top view of the ejector when the push-down head shown in FIG. 1 is located at a restriction position. FIG. 2 is a top view of the ejector shown in FIG. 1; FIG. 2 is a front view of the ejector shown in FIG. 1 when viewed from the nozzle cylinder side. FIG. 2 is a longitudinal cross-sectional view showing a state in which the push-down head is pressed down from the state shown in FIG. 1 .

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of the ejector 1 based on this invention is described with reference to drawings.
As shown in FIG. 1, the dispensing device 1 of this embodiment includes a pump part 10 having a stem 11 and a mouth part 3 of a container body 2 in which contents are accommodated. The device includes a mounting cap 20 for combining the parts 10 and a push-down head 30 mounted on the stem 11.
It should be noted that each component of the ejector 1 is a molded product using a synthetic resin material unless otherwise specified. Further, the discharge device 1 may include a cover cap in the shape of a capped cylinder that covers the push-down head 30 and the mounting cap 20.

The stem 11 and the mounting cap 20 are arranged coaxially with the container axis O of the container body 2. Hereinafter, along the container axis O, the push-down head 30 side will be referred to as the upper side, the container body 2 side will be referred to as the lower side, and the direction along the container axis O will be referred to as the up-down direction. Furthermore, in a plan view seen from above and below, the direction intersecting the container axis O is called the radial direction, and the direction going around the container axis O is called the circumferential direction.
Further, among the circumferential directions, the direction in which the dispensing device 1 is viewed from above in a clockwise direction around the container axis O is referred to as a first direction M1, and the direction in which the container axis O is orbited in a counterclockwise direction is referred to as a second direction M2. Further, one of the radial directions that are perpendicular to each other is referred to as a front-rear direction L1, and the other direction is referred to as a left-right direction L2.

(container body)
The container body 2 is formed into a bottomed cylindrical shape in which a mouth portion 3, a shoulder portion 4, a body portion 5, and a bottom portion (not shown) are successively arranged from above. A male threaded portion 6 is formed on the outer peripheral surface of the mouth portion 3 of the container body 2 .

(installed cap)
The mounting cap 20 includes a mounting tube 21 that surrounds the mouth 3 of the container body 2 from the outside in the radial direction, an annular cap top wall 22 that projects from the upper end of the mounting tube 21 toward the inside in the radial direction, and a cap top. It includes a regulating cylinder 23 and a guide cylinder 24 extending upward from the wall 22.

A female threaded portion 25 is formed on the inner circumferential surface of the mounting tube 21 and is screwed into a male threaded portion 6 formed in the mouth portion 3 of the container body 2 . Thereby, the mounting cap 20 is mounted on the mouth portion 3 of the container body 2 by screwing the male threaded portion 6 and the female threaded portion 25 together.
However, the mounting method of the mounting cap 20 is not limited to screwing, and may be mounted to the opening 3 of the container body 2 by, for example, undercut fitting.

The regulating cylinder 23 is formed integrally with the inner circumferential edge of the cap top wall 22 and extends upward from the inner circumferential edge. However, the regulating cylinder 23 does not need to be formed integrally with the mounting cap 20, and may be formed separately and then combined with the mounting cap 20.
The regulating tube 23 is formed into a cylindrical shape larger than the outer diameter of the stem 11. In the illustrated example, the regulating tube 23 is formed so as to surround the stem 11 with an annular gap formed between the regulating tube 23 and the stem 11 . Further, the regulating cylinder 23 extends upward from the cap top wall 22 so as to have a length that is approximately the same as the length of the mounting cylinder 21 in the vertical direction.

A vertically elongated slide groove 26 is formed on the outer circumferential surface of the regulating tube 23 so as to open upward and allow downward movement of a regulating protrusion 38, which will be described later. A pair of slide grooves 26 are formed so as to face each other in the radial direction with the container axis O in between. In the illustrated example, the slide grooves 26 are formed to face each other in the front-rear direction L1 with the container axis O interposed therebetween.
As shown in FIG. 2, the slide groove 26 is formed to extend in the circumferential direction, and is formed in an arcuate shape when viewed in plan from the direction of the container axis O. In the illustrated example, the circumferential width is about 1/4 of the regulating cylinder 23 in plan view.

In the regulating tube 23 configured as described above, the portion of the upper end opening edge adjacent to the slide groove 26 in the circumferential direction comes into contact with a regulating protrusion 38, which will be described later, from below. It functions as a restriction surface 27 that restricts movement to. Therefore, in this embodiment, the portion of the upper opening edge of the regulating tube 23 located between the pair of slide grooves 26 and facing each other in the left-right direction L2 with the container axis O in between is the regulating surface 27. functions as

As shown in FIG. 1, the guide tube 24 is formed to extend upward from the cap top wall 22 so as to surround the regulating tube 23 from the outside in the radial direction. However, the guide tube 24 does not need to be formed integrally with the mounting cap 20, and may be formed separately and then combined with the mounting cap 20. The guide tube 24 is formed into a cylindrical shape that is larger than the outer diameter of the regulating tube 23 and smaller than the outer diameter of the mounting tube 21.
In the illustrated example, the guide tube 24 is formed to surround the restriction tube 23 with an annular gap between the guide tube 24 and the restriction tube 23, and has a lower protruding height than the restriction tube 23. is formed.

The guide tube 24 plays a role in guiding the movement (up and down movement and rotational movement around the container axis O) of the push-down head 30. Note that a guide mechanism 40 for guiding the push-down head 30 is provided between the guide tube 24 and a head peripheral wall 32 of the push-down head 30, which will be described later. The guide mechanism 40 will be described later.

(Pump part)
The pump section 10 mainly includes a stem 11, a cylinder 12, a support tube 13, a valve member 15, a piston guide 16, a piston 17, and a biasing member (not shown).
As shown in FIG. 1, the cylinder 12 is formed into a cylindrical shape having a cylinder peripheral wall 12a, and is disposed coaxially with the container axis O. An annular flange portion 12b that protrudes radially outward is formed at the upper end of the cylinder peripheral wall 12a.
The flange portion 12b is arranged on the upper end opening edge of the mouth portion 3 of the container body 2 via the packing 14, and is connected to the upper end opening edge of the mouth portion 3 by the mounting cap 20 attached to the mouth portion 3 of the container body 2. It is sandwiched vertically between the two.

As a result, the entire pump section 10 including the cylinder 12 is attached to the opening 3 of the container body 2 via the attachment cap 20. The cylinder 12 extends downward from the mouth 3 of the container body 2 and is attached to the mouth 3 of the container body 2 via the mounting cap 20 so as to enter inside the container body 2.
The cylinder peripheral wall 12a opens upward through the inside of the cap top wall 22. As a result, the stem 11 is inserted into the cylinder peripheral wall 12a from above.

The valve member 15 functions as a lower valve body in the pump section 10 and plays a role of switching between communicating and blocking the inside of the container body 2 and the inside of the cylinder 12. Specifically, the valve member 15 prevents the contents of the cylinder 12 from flowing back into the container body 2 when the pressure inside the cylinder 12 is increased, and prevents the contents of the container body 2 from flowing back into the container body 2 when the pressure inside the cylinder 12 is reduced. It is possible for objects to flow into the cylinder 12.

The stem 11 is erected inside the mouth 3 of the container body 2 so as to be movable downward while being biased upward. The stem 11 is formed into a cylindrical shape extending in the vertical direction, and is disposed inside the cap top wall 22 and inside the cylinder peripheral wall 12a. The stem 11 is arranged such that its upper end protrudes above the regulating cylinder 23 and the guide cylinder 24 and its lower end is accommodated in the cylinder 12 before the pressing head 30 is pressed down. There is.
Note that the lower end portion of the stem 11 is an expanded diameter portion 11a that expands outward in the radial direction. Thereby, the stem 11 is formed into a two-stage cylindrical shape with an outer diameter that changes in the vertical direction.

The piston guide 16 is disposed below the stem 11 and coaxially with the container axis O. The piston guide 16 cooperates with the piston 17 to function as an upper valve body in the pump section 10. The piston 17 is linked to the vertical movement of the stem 11 and is fitted inside the cylinder 12 so as to be vertically slidable. Note that the stem 11 is urged upward via a piston guide 16 by a biasing member (not shown).

The support tube 13 functions as a retaining member for each component disposed within the cylinder 12, such as the piston 17. The support tube 13 is attached to the inner side of the upper end of the cylinder peripheral wall 12a, and is arranged coaxially with the container axis O.

(push head)
As shown in FIG. 1, the push-down head 30 is disposed above the pump section 10 and attached to the upper end of the stem 11.
The push-down head 30 is formed in the shape of a capped cylinder having a head top wall 31 and a head circumferential wall 32, is disposed coaxially with the container axis O, and is rotatable around the container axis O.

The head peripheral wall 32 is formed into a cylindrical shape that surrounds the stem 11 and the regulating tube 23 from the outside in the radial direction, and is arranged between the regulating tube 23 and the guide tube 24 . The head peripheral wall 32 is movable downward inside the guide tube 24 when the push-down head 30 is pressed down (see FIG. 6). Thereby, the entire push-down head 30 is movably guided by the guide tube 24.

As shown in FIGS. 1 and 2, a first protrusion (stopper protrusion according to the present invention) 33 and a second protrusion are formed at the lower end of the head peripheral wall 32 to protrude radially outward. A portion 34 (stopper protrusion according to the present invention) is formed.
As shown in FIG. 2, the first protrusion 33 and the second protrusion 34 are formed to face each other in the radial direction with the container axis O in between, and are arranged inside the guide tube 24. In the illustrated example, the first protrusion 33 and the second protrusion 34 are vertically formed at the lower end of the head peripheral wall 32 .

The first protrusion 33 and the second protrusion 34 are formed to extend in the circumferential direction with a predetermined circumferential width when viewed in plan from the direction of the container axis O. In the illustrated example, the second protrusion 34 is formed to have a longer circumferential width than the first protrusion 33 .
However, the invention is not limited to this case, and the circumferential width of the second protruding part 34 may be equal to the circumferential width of the first protruding part 33, or may be smaller than the circumferential width of the first protruding part 33. I don't mind.

Note that the first protrusion 33 and the second protrusion 34 are located inside the upper end of the guide tube 24 in a state before the push-down head 30 is pressed down, as shown in FIG. Thereby, the first protrusion 33 and the second protrusion 34 are hidden inside the guide tube 24 and are not exposed to the outside. Thereby, the appearance of the ejector 1 can be improved, and deterioration in design quality and designability can be suppressed.

A connecting cylinder 35 extending downward from the head peripheral wall 32 is formed coaxially with the container axis O inside the head peripheral wall 32 . The connecting cylinder 35 is formed into a cylindrical shape that surrounds the upper end of the stem 11 from the outside in the radial direction, and is arranged inside the regulating cylinder 23 . The connecting tube 35 is fitted onto the stem 11. Thereby, the push-down head 30 is attached to the upper end of the stem 11.

The push-down head 30 includes a nozzle cylinder portion 36 extending radially outward from the head peripheral wall 32.
The nozzle tube portion 36 is formed with a length that projects further outward in the radial direction than the attachment tube 21 of the attachment cap 20 . Furthermore, the nozzle cylinder portion 36 is formed to extend toward the inside of the head peripheral wall 32 and communicates with the inside of the connecting cylinder 35 .
Note that the length of the nozzle cylinder portion 36 is not particularly limited, and may be set to a length that does not protrude outward in the radial direction from the mounting cylinder 21 of the mounting cap 20, for example.

A nozzle hole 37 is formed at the tip of the nozzle cylinder portion 36 to discharge the contents to the outside. Therefore, the nozzle hole 37 communicates with the inside of the stem 11 through the inside of the nozzle cylinder part 36 and the inside of the connecting cylinder 35. Therefore, it is possible to discharge the contents supplied into the stem 11 to the outside through the nozzle hole 37.

The push-down head 30 configured as described above can be switched between a restriction position P1 where downward movement is restricted and a permissible position P2 where downward movement is permitted by rotation around the container axis O.

As shown in FIG. 2, the regulation position P1 is a state in which a regulation protrusion 38, which will be described later, formed on the push-down head 30 is arranged above the regulation surface 27 of the regulation cylinder 23 (up and down with respect to the regulation surface 27). (the state of facing in the opposite direction). Note that when the push-down head 30 is located at the restriction position P1, the first protrusion 33 and the second protrusion 34 formed on the push-down head 30 as shown in FIG. 52 and the second circumferential groove 57.

As shown in FIGS. 1 and 2, the permissible position P2 is a state in which a regulating protrusion 38, which will be described later, formed on the push-down head 30 is arranged above the slide groove 26 formed on the regulating tube 23 (sliding (a state in which the groove 26 is vertically opposed to the groove 26). Note that when the push-down head 30 is located at the permissible position P2, the first protrusion 33 and the second protrusion 34 formed on the push-down head 30 align with the first vertical groove 51, which will be described later, as shown in FIG. It is located within the inner and second vertical grooves 56 .

In this embodiment, when the push-down head 30 is located at the permissible position P2, as shown in FIGS. 1 and 4, the nozzle cylinder portion 36 approximately coincides with the front-rear direction L1, and the nozzle hole 37 faces forward. Open it. Further, by rotating the push-down head 30 in the first direction M1 about the container axis O, it is possible to switch from the permissible position P2 to the restricted position P1. On the contrary, by rotating the push-down head 30 in the second direction M2, it is possible to switch from the restriction position P1 to the permissible position P2.

In addition, in this embodiment, when the push-down head 30 is located at the restriction position P1, the nozzle cylinder part 36 faces in the left-right direction L2 in a plan view seen from the container axis O direction, as shown in FIGS. 2 and 3. . Therefore, by rotating the push-down head 30 90 degrees around the container axis O, switching between the restriction position P1 and the permissible position P2 can be performed. However, the switching angle of the push-down head 30 is not limited to 90 degrees.

As shown in FIGS. 1 and 2, the head circumferential wall 32 of the push-down head 30 configured as described above is provided with a regulating protrusion 38 that protrudes radially inward.
A pair of regulating protrusions 38 are formed so as to face each other in the radial direction with the container axis O in between, and are also formed to extend vertically along the inner circumferential surface of the head circumferential wall 32 . Thereby, the regulating protrusion 38 is formed in the shape of a vertical rib. Note that the upper end portion of the regulating protrusion 38 is formed integrally with the head top wall 31.

The regulating protrusion 38 is formed so as to be located above the upper opening edge of the regulating tube 23 in a state before the push-down head 30 is pressed down. In the illustrated example, before the push-down head 30 is pressed down, the lower end of the regulation protrusion 38 contacts or approaches the upper opening edge of the regulation tube 23 from above.
Further, the regulating protrusion 38 is formed to extend in the circumferential direction in accordance with the shape of the slide groove 26 formed in the regulating cylinder 23, and is formed in an arc shape when viewed from the container axis O direction. Note that the circumferential width of the regulating protrusion 38 is formed to be slightly shorter than the circumferential width of the slide groove 26.

The regulating protrusion 38 configured as described above is arranged above the opening in the slide groove 26 when the push-down head 30 is located at the allowable position P2. Thereby, the downward movement of the regulating protrusion 38 within the slide groove 26 is allowed, so that the push-down head 30 can be pressed down at the allowed position P2.
On the other hand, when the push-down head 30 is located at the restriction position P1, the restriction protrusion 38 is arranged to face above the restriction surface 27 of the restriction cylinder 23. Thereby, the downward movement of the regulating protrusion 38 is regulated by the regulating surface 27, so that it is possible to regulate the pressing operation of the push-down head 30 at the regulating position P1.

(Guide mechanism)
As shown in FIGS. 1 and 2, between the head circumferential wall 32 and the guide tube 24 in the push-down head 30, the push-down head 30 is movable between a restriction position P1 and a permissible position P2 along the circumferential direction. A guide mechanism 40 for guiding is provided.
The guide mechanism 40 cooperates with the above-mentioned regulating protrusion 38 and slide groove 26 to allow the downward movement of the push-down head 30 at the permissible position P2 and to restrict the downward movement of the push-down head 30 at the regulation position P1. conduct.

Specifically, the guide mechanism 40 includes a first guide groove (a guide groove according to the present invention) 50 and a second guide groove (a guide groove according to the present invention) 55 formed in the guide tube 24. The first guide groove 50 and the second guide groove 55 movably accommodate the first protrusion 33 and the second protrusion 34 formed on the head peripheral wall 32, respectively. Note that the first protrusion 33 and the second protrusion 34 constitute a guide mechanism 40.

The first guide groove 50 includes a first vertical groove (vertical groove according to the present invention) 51 that allows the first projection 33 to move downward when the push-down head 30 is located at the permissible position P2; A first circumferential groove (a circumferential groove according to the present invention) that extends along the circumferential direction, communicates with the first vertical groove 51, and in which the first protrusion 33 is disposed when the push-down head 30 is located at the restriction position P1. groove) 52.

Similarly, the second guide groove 55 has a second vertical groove (vertical groove according to the present invention) 56 that allows the second protrusion 34 to move downward when the push-down head 30 is located at the permissible position P2. and a second circumferential groove that extends along the circumferential direction and communicates with the second vertical groove 56, and in which the second protrusion 34 is disposed when the push-down head 30 is located at the restriction position P1 (in the present invention). This circumferential groove) 57 is provided.

These first longitudinal grooves 51, first circumferential grooves 52, second longitudinal grooves 56, and second circumferential grooves 57 will be explained in detail.
As shown in FIGS. 1 and 2, a first vertical groove 51 and a second vertical groove 56 that open upward are formed on the inner circumferential surface of the guide tube 24 at intervals in the circumferential direction. The first longitudinal groove 51 and the second longitudinal groove 56 are formed to face each other in the radial direction with the container axis O in between, and are also formed to be lined up in the left-right direction L2 when viewed from the container axis O direction. ing. Furthermore, the first vertical groove 51 and the second vertical groove 56 are formed over the entire length of the guide tube 24.

As shown in FIG. 2, the first longitudinal groove 51 is formed in a shape corresponding to the outer shape of the first protrusion 33 when viewed from the direction of the container axis O, and is formed around the circumference of the first protrusion 33. It is formed so that the circumferential width is slightly larger than the width. Further, the depth of the first vertical groove 51 (the amount of dent in the radial direction) is larger than the amount of protrusion of the first protrusion 33 in the radial direction.
The second vertical groove 56 is formed similarly to the first vertical groove 51. In other words, the second longitudinal groove 56 is formed in a shape corresponding to the outer shape of the second protrusion 34 when viewed from the direction of the container axis O, and is slightly smaller than the circumferential width of the second protrusion 34. It is formed to have a large circumferential width. Further, the depth of the second vertical groove 56 (the amount of dent in the radial direction) is greater than the amount of protrusion of the second protrusion 34 in the radial direction.

Therefore, when the push-down head 30 is located at the permissible position P2, in addition to the regulating projection 38 being located above the opening of the slide groove 26, the first projection 33 is located within the first vertical groove 51. , and the second protrusion 34 is located within the second longitudinal groove 56. This allows the push-down head 30 to be pressed down.

As shown in FIGS. 1 and 2, the first circumferential groove 52 is formed on the inner circumferential surface of the upper end of the guide tube 24. As shown in FIGS. The first circumferential groove 52 communicates with the first vertical groove 51 and is formed to extend in the circumferential direction from the first vertical groove 51 toward the first direction M1. Furthermore, the first circumferential groove 52 is open upward.

Among the walls defining the first circumferential groove 52, the bottom wall surface facing upward comes into contact with the first protrusion 33 from below when the push-down head 30 is located at the restriction position P1. It functions as a regulating wall 58 that regulates the downward movement of the first protrusion 33 .
Therefore, when the first protrusion 33 is located in the first circumferential groove 52, the first protrusion 33 rides on the regulating wall 58, so that the downward movement of the first protrusion 33 is prevented. Movement can be regulated. Therefore, it is possible to restrict the pressing operation of the pressing head 30.

The peripheral end wall defining the first circumferential groove 52 faces in the second direction M2, and serves as a positioning surface 53 with which the first protrusion 33 comes into contact when the first protrusion 33 moves in the first direction M1. ing. Thereby, the rotation of the press-down head 30 in the first direction M1 can be restricted, and the press-down head 30 can be appropriately positioned at the restriction position P1.

Further, as shown in FIG. 2, among the wall surfaces defining the first vertical groove 51, the wall surface facing in the first direction M1 is connected to the first protrusion 33 when the first protrusion 33 moves in the second direction M2. 33 is a positioning surface 54 that comes into contact. Thereby, rotation of the push-down head 30 in the second direction M2 can be restricted, and it is possible to appropriately position the push-down head 30 at the permissible position P2.

Of the first circumferential groove 52 configured as described above, the area excluding the portion where the first vertical groove 51 and the positioning surface 53 are formed (the portion where the first protrusion 33 is located at the regulation position P1) is as follows: The depth (the amount of dent in the radial direction) is formed smaller than the portion where the first vertical groove 51 and the positioning surface 53 are formed.
Thereby, when the push-down head 30 is located at the restriction position P1 and the allowable position P2, it is possible to suppress the first protrusion 33 from moving in the circumferential direction. Therefore, it is possible to prevent the push-down head 30 from rotating unintentionally from the restriction position P1 and the allowable position P2.
Furthermore, when switching the push-down head 30 between the regulation position P1 and the permissible position P2, for example, the first circumferential groove 52 presses against the outer circumferential surface of the first protrusion 33 with appropriate frictional resistance. It is possible to impart resistance to the first protrusion 33. Therefore, it is possible to perform the switching operation of the push-down head 30 while feeling the operation feeling.

The second guide groove 55 has the same configuration as the first guide groove 50 described above. Therefore, a detailed explanation of the second guide groove 55 will be omitted, and the same reference numerals are given to the constituent elements corresponding to the first guide groove 50.

(Effect of discharge device)
Next, a case will be described in which the contents are discharged using the discharge device 1 configured as described above.

First, as shown in FIG. 2, when the push-down head 30 is located at the restriction position P1, the restriction protrusion 38 is located above the restriction surface 27 of the restriction tube 23, and is not aligned with the restriction surface 27. They face each other in the vertical direction. As a result, even if an unexpected external force such as a falling impact acts on the push-down head 30, the regulation protrusion 38 comes into contact with the regulation surface 27, so that the external force acting on the push-down head 30 cannot be received by the regulation tube 23. can. Therefore, it is possible to prevent the push-down head 30 from being pushed downward by an unexpected external force as in the conventional case.

In particular, when the push-down head 30 is located at the restriction position P1, as shown in FIG. And it is in a state where it rides on the regulating wall 58 in the second circumferential groove 57. Even in such a situation, the press-down head 30 can be prevented from being pushed downward by the regulating protrusion 38 and the regulating surface 27, so that, for example, the first protruding part 33 and the second protruding part 34 It is possible to prevent the groove 52 and the second circumferential groove 57 from strongly pressing against the regulating wall 58. Therefore, it is possible to prevent problems such as deformation of the first protrusion 33 and the second protrusion 34 from occurring. Thereby, inconveniences such as the push-down head 30 becoming jammed are less likely to occur.

Next, the case of discharging the contents will be explained.
In this case, the push-down head 30 is rotated in the second direction M2 around the container axis O, and the push-down head 30 is moved from the restriction position P1 shown in FIG. 3 to the allowable position P2 shown in FIGS. 1, 2, and 4. Migrate. At this time, the push-down head 30 is guided in its movement in the circumferential direction by the guide mechanism 40, so it moves smoothly to the allowable position P2 with less rattling. Further, the push-down head 30 is allowed to move downward when it reaches the allowable position P2.

Specifically, by rotating the push-down head 30 in the second direction M2, the first projection 33 can be moved from inside the first circumferential groove 52 to inside the first vertical groove 51, as shown in FIG. At the same time, the second protrusion 34 can be moved from inside the second circumferential groove 57 to inside the second vertical groove 56. Thereby, the first protrusion 33 and the second protrusion 34 can be allowed to move downward by using the first longitudinal groove 51 and the second longitudinal groove 56.
Furthermore, by positioning the push-down head 30 at the permissible position P2, the regulating protrusion 38 can be moved from above the regulating surface 27 to above the opening of the slide groove 26, as shown in FIGS. 1 and 2. I can do it. Thereby, the downward movement of the regulating protrusion 38 can be allowed using the slide groove 26.

Due to these, the restriction on the downward movement of the push-down head 30 can be released, and the downward movement of the push-down head 30 can be allowed.
Note that since the first projection 33 can be brought into contact with the positioning surface 54 of the first vertical groove 51 and the second projection 34 can be brought into contact with the positioning surface 54 of the second vertical groove 56, the push-down head 30 can be appropriately positioned at the permissible position P2. Furthermore, by positioning the push-down head 30 at the permissible position P2, the nozzle cylinder portion 36 is switched to a posture facing forward.

Note that, as shown in FIG. 5, a vertically long first positioning groove 60 is formed in a portion of the outer circumferential surface of the guide tube 24 facing forward. Further, a second longitudinal positioning groove 61 is formed in a portion of the outer circumferential surface of the head circumferential wall 32 of the push-down head 30 located below the nozzle cylinder portion 36 .
Thereby, when the push-down head 30 is located at the permissible position P2, the first positioning groove 60 and the second positioning groove 61 can be arranged in a straight line in the vertical direction. Therefore, by visually recognizing the positional relationship between the first alignment groove 60 and the second alignment groove 61, the push-down head 30 can be appropriately positioned at the allowable position P2, and the nozzle cylinder portion 36 can be appropriately moved forward. can be directed.

Next, after switching the push-down head 30 to the allowable position P2, the push-down head 30 can be pushed down against the upward bias of the stem 11, as shown in FIG. As a result, while the regulating protrusion 38 is moved downward within the slide groove 26 and the first protrusion 33 and the second protrusion 34 are moved downward within the first longitudinal groove 51 and the second longitudinal groove 56, the stem 11 is moved downward. can be pressed down. As a result, the contents can be discharged through the nozzle hole 37 using the pump section 10.

As explained above, according to the ejector 1 of the present embodiment, the push-down head 30 cannot be pressed down unless the push-down head 30 is switched from the restriction position P1 to the permissible position P2. For example, it is possible to prevent the contents from being unintentionally discharged due to an unexpected external force such as a drop impact during product distribution or storage.
In particular, when the push-down head 30 is positioned at the regulation position P1, the regulation cylinder 23 combined with the mounting cap 20 can be used to appropriately receive external force acting on the push-down head 30. can be effectively prevented from being pushed downward. Therefore, as described above, it is possible to suppress the occurrence of inconveniences such as deformation of the first protrusion 33 and the second protrusion 34, and it is difficult for inconveniences such as the push-down head 30 to get caught. . Therefore, it is possible to prevent the push-down head 30 from becoming difficult to return to its original position as in the conventional case. Therefore, the push-down head 30 can be operated stably and appropriately, and the ejector 1 can have improved operational reliability.

Further, the head peripheral wall 32 has a first protrusion 33 and a second protrusion 34 formed radially outward, and a regulating protrusion 38 radially inward. Therefore, since the head circumferential wall 32 has portions formed on both the outer circumferential surface and the inner circumferential surface to receive external force, the head circumferential wall 32 will not be deformed even if a strong external force such as a drop impact is applied to the press-down head 30. Such inconveniences can be effectively prevented. In this respect as well, the push-down head 30 can be prevented from being pushed downward.

Furthermore, in the discharge device 1 of the present embodiment, as shown in FIG. 2, the regulation protrusion 38 and the slide groove 26 are formed in an arc shape extending in the circumferential direction in a plan view, so that, for example, the push-down head 30 is positioned at the regulation position P1. Even if an unexpected external force such as a drop impact is applied to the push-down head 30 while the push-down head 30 is being pressed, a large contact area between the regulating protrusion 38 and the regulating surface 27 can be ensured.
Therefore, the external force acting on the push-down head 30 can be received over a wide range by the regulating cylinder 23, and the push-down head 30 can be more effectively prevented from being pushed downward. Furthermore, since a large contact area between the regulating protrusion 38 and the regulating surface 27 can be ensured, problems such as tilting of the push-down head 30 are less likely to occur.

Furthermore, when the push-down head 30 is pushed down at the permissible position P2, the regulation protrusion 38 having a large circumferential width can be moved downward within the slide groove 26, so that the push-down head 30 can be stably moved with less rattling. Can be operated by pressing down. Therefore, it is possible to improve the operability.

Further, the regulating protrusion 38 is formed in the shape of a vertical rib, and is housed in the slide groove 26 so as not to be movable in the circumferential direction when the push-down head 30 is pressed down at the allowable position P2. Therefore, it is possible to suppress the shaking of the push-down head 30 around the container axis O during the operation of discharging the contents, and it is possible to smoothly push the push-down head 30 downward. Therefore, it is possible to further improve the operability.

Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. The embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. The embodiments and their modifications include, for example, those that can be easily imagined by those skilled in the art, those that are substantially the same, and those that are equivalent.

For example, in the above embodiment, the configuration is such that two regulating protrusions 38 and two sliding grooves 26 are provided, but the invention is not limited to this case. For example, one or three or more may be provided. .
Similarly, in the above embodiment, the configuration includes the first protrusion 33 and the second protrusion 34, but the number of protrusions is not limited to two, and may be one, for example, or three. More than one may be formed.

P1...Regulation position P2...Permissible position 1...Discharger 2...Container body 3...Mouth of container body 11...Stem 10...Pump part 20...Mounting cap 23...Regulation tube 24...Guide tube 26...Slide groove 27...Restriction surface 30...Pushing head 32...Head peripheral wall 33...First protrusion (stopper protrusion)
34...Second protrusion (stopper protrusion)
37... Nozzle hole 38... Regulating protrusion 50... First guide groove (guide groove)
51...First vertical groove (vertical groove)
52...First circumferential groove (circumferential groove)
55...Second guide groove (guide groove)
56...Second vertical groove (vertical groove)
57...Second circumferential groove (circumferential groove)
58...Regulation wall

Claims (3)

a pump part having a stem disposed so as to be movable downward in an upwardly biased state, and combined with the mouth part of the container body containing the contents via a mounting cap attached to the mouth part of the container body; ,
a push-down head that has a nozzle hole for discharging contents, is attached to the upper end of the stem, and is rotatable around a container axis in the container body;
a regulating tube that is combined with the mounting cap and extends upward;
a guide tube that surrounds the regulation tube from the outside in the radial direction and guides movement of the push-down head;
The push-down head has a head peripheral wall that surrounds the regulating cylinder from the outside in the radial direction, and can be switched between a regulating position in which downward movement is regulated and a permissible position in which downward movement is permitted by rotation about the container axis. It is said that
The head peripheral wall includes a stopper protrusion formed to protrude outward in the radial direction, and a regulating protrusion that protrudes inward in the radial direction and vertically faces the upper end opening edge of the regulating cylinder. formed,
A guide groove for movably accommodating the stopper protrusion is formed in the guide tube,
The guide groove is
a vertical groove that allows the stopper protrusion to move downward when the push-down head is in the permissible position; and a vertical groove that extends along a circumferential direction around the container axis and communicates with the vertical groove; and a circumferential groove in which the stopper protrusion is arranged when the push-down head is located at the restriction position,
The bottom wall surface of the circumferential groove serves as a regulating wall that restricts downward movement of the stopper protrusion by contacting the stopper protrusion from below,
A vertically elongated slide groove that allows downward movement of the regulating protrusion is formed on the outer circumferential surface of the regulating cylinder so as to open upward;
A portion of the upper end opening edge of the restriction tube that is adjacent to the slide groove in the circumferential direction is a restriction surface that restricts downward movement of the restriction projection by contacting the restriction projection from below. It is said that
The regulation protrusion is arranged to vertically face the slide groove when the push-down head is located at the permissible position, and the regulation protrusion is arranged to face the slide groove in the vertical direction when the push-down head is located at the regulation position. A discharger characterized in that it is arranged to vertically face a regulating surface. The ejector according to claim 1,
The ejector, wherein the regulating protrusion and the slide groove are formed to extend in the circumferential direction. The ejector according to claim 1 or 2,
The regulating protrusion is formed to be vertically elongated and extends in the vertical direction, and is housed in the slide groove so as not to be movable in the circumferential direction when the push-down head is pressed down at the permissible position. , ejector.

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