JP7442338B2 - Discharge unit - Google Patents

Description

The present invention relates to a discharge unit.

As a discharge unit attached to a discharge container that discharges contents, there is, for example, one described in Patent Document 1. The discharge unit of Patent Document 1 (described as a spouting stopper in the same document) is attached to the mouth portion of the container body (described as a spout portion in the same document). The discharge unit of the same document has a trap room arranged inside the upper part of the container body. A liquid inflow hole is formed in the upper part of the side circumference of the trap room, and a liquid return hole is formed in the lower part of the side circumference of the trap room. The trap room communicates with the outside (an area outside the trap room inside the container body) via these liquid inflow holes and liquid return holes. Furthermore, the discharge unit has a discharge nozzle that interconnects the interior of the trap room and the exterior of the discharge container.

In the technique of Patent Document 1, when a squeeze operation is performed with the discharge container in an inverted state, a portion of the contents inside the container body passes through the liquid inlet hole, the trap room, and the spout nozzle in this order, and exits from the discharge port. It is thought that the other part of the contents passes through the liquid return hole, the trap room, and the spout nozzle in this order, and is discharged from the discharge port to the outside.
When the dispensing container is switched from an inverted state to an upright state, the contents inside the dispensing nozzle and trap room are returned to the container body through the liquid return hole.

Japanese Patent Application Publication No. 2003-226377

According to studies by the inventors of the present application, there is room for improvement in the structure of the ejection unit of Patent Document 1 from the viewpoint of securing the time until the contents are ejected with good reproducibility.

The present invention has been made in view of the above-mentioned problems, and relates to a discharge unit that can secure a time period until contents are discharged with good reproducibility.

A dispensing unit that is attached to a dispensing container having a container body for storing contents and discharging the contents by causing the contents to flow inside, the dispensing unit being located at a position on the inflow side of the contents from the container body to the dispensing unit. a first opening and a second opening arranged respectively; an upstream flow path through which the contents flowing from the first opening flow; and a discharge port at the tip thereof; A discharge channel for flowing and discharging contents, a boundary between the upstream channel and the discharge channel, and the second opening communicate with each other, and in an upright state, the discharge channel or the upstream a return channel for returning the content from the side channel to the container body, the second opening being a discharge port for the content from the return channel to the container body, and the first opening The discharge unit has an opening area larger than an opening area of the second opening, and the second opening faces the container main body side.

According to the present invention, the time required for the contents to be discharged from the discharge port can be ensured with good reproducibility.

FIG. 2 is a longitudinal cross-sectional view showing a state in which the discharge unit according to the first embodiment is attached to the discharge container. 2(a), 2(b), and 2(c) are views showing the first member of the discharge unit according to the first embodiment, of which FIG. 2(a) is a perspective view, and FIG. b) is a plan view, and FIG. 2(c) is a bottom view. 3(a) and 3(b) are longitudinal sectional views of the discharge unit according to the first embodiment. FIGS. 4A and 4B are vertical cross-sectional views of the discharge unit according to the first embodiment, showing an inverted state. 5(a) and 5(b) are diagrams showing the discharge unit according to the first embodiment, and FIG. 5(a) shows the state before the first member and the second member are assembled to each other. The figure shown in FIG. 5(b) is a diagram showing a state in which the first member and the second member are assembled to each other. FIG. 3 is a schematic diagram showing the positional relationship between parts of the ejection unit according to the first embodiment in a plan view. 7(a), FIG. 7(b), and FIG. 7(c) are views showing the first member of the discharge unit according to the second embodiment, of which FIG. 7(a) is a perspective view, and FIG. b) is a plan view, and FIG. 7(c) is a bottom view. FIGS. 8(a) and 8(b) are longitudinal cross-sectional views of a discharge unit according to the second embodiment. FIG. 7 is a longitudinal cross-sectional view of a discharge unit according to a modification of the second embodiment.

Hereinafter, preferred embodiments of the present invention will be described using the drawings. In addition, in all the drawings, the same reference numerals are given to the same components, and the explanation is omitted as appropriate.
Furthermore, the embodiments described below are merely examples for facilitating understanding of the present invention, and do not limit the present invention. That is, the shapes, dimensions, arrangement, etc. of the members described below may be changed or improved without departing from the spirit of the present invention, and the present invention includes equivalents thereof.
Note that the various components of the discharge unit of the present invention do not need to exist independently. A plurality of components are formed as a single member, a component is formed of a plurality of members, a component is a part of another component, and a component is a single component. It is allowed that a portion of a component overlaps with a portion of another component, etc.

[First embodiment]
First, a first embodiment will be described using FIGS. 1 to 6. In addition, each of FIG. 1, FIG. 3(a), and FIG. 4(a) shows the cross section along the AA line of FIG. 2(b), and the cross section of FIG. 3(b) and FIG. 4(b) is Each shows a cross section taken along line BB in FIG. 2(b). Further, in FIGS. 3A and 3B, arrows indicate an example of the movement of the contents 220 when switching from an inverted state to an erect state. Similarly, in FIGS. 4(a) and 4(b), arrows indicate an example of the movement of the contents 220 in the inverted state. Further, in FIG. 5(b), a part of the first member 10 of the ejection unit 100 is cut away to show the internal structure of the ejection unit 100.

As shown in any of FIGS. 1 to 6, the discharge unit 100 according to the present embodiment is attached to a discharge container 200 having a container body 210 that stores contents 220, and allows the contents 220 to flow inside. Exhale. Further, the discharge container 200 according to the present embodiment includes a container body 210 that stores the contents 220, and the above-mentioned discharge unit 100 that is attached to the container body 210 and discharges the contents 220 by causing the contents 220 to flow inside. . That is, the discharge container 200 here also includes the discharge unit 100.
The discharge unit 100 has a first opening 21a and a second opening 31, which are respectively arranged at positions on the inflow side of the contents 220 from the container body 210 to the discharge unit 100, and contents 220 that have flowed in from the first opening 21a. an upstream flow path 80 through which the contents 220 flow, a discharge flow path 73 having a discharge port 72 at its tip and through which the contents 220 flowing from the upstream flow path 80 flow and are discharged; A return channel 33 that communicates the boundary 65 with the channel 73 and the second opening 31 and returns the contents 220 from the discharge channel 73 or the upstream channel 80 to the container body 210 in the upright state. The second opening 31 is a discharge port for discharging the contents 220 from the return channel 33 to the container body 210, and the opening area of the first opening 21a is larger than the opening area of the second opening 31. faces the container body 210 side.
Here, the container body 210 side is the side opposite to the discharge port 72 side when the discharge unit 100 is attached to the container body 210. In the case of this embodiment, the container body 210 has a bottom portion 213 as described later, and in this case, the container body 210 side is the bottom portion 213 side.

The discharge container 200 can discharge the contents 220 in an inverted state. More specifically, when the discharge container 200 is switched from the upright state to the inverted state, the contents 220 of the container body 210 flow into the upstream channel 80 from the first opening 21a, pass through the discharge channel 73, It is discharged from the discharge port 72.
For example, when a squeeze operation is performed to squeeze the discharge container 200, the contents 220 are discharged from the discharge port 72 of the discharge unit 100.

According to this embodiment, when the discharge container 200 is switched from an inverted state to an upright state, the contents 220 inside the discharge flow path 73 and the upstream flow path 80 pass through the return flow path 33 and are The container body 210 is quickly returned to the inside of the container body 210 through the second opening 31. Therefore, the interiors of the discharge flow path 73 and the upstream flow path 80 are quickly emptied (reset). Thereby, when the discharge container 200 is switched from the upright state to the inverted state again, the contents 220 are discharged from the discharge port 72 through the upstream channel 80 and the discharge channel 73. can. That is, even if the operation of switching the discharge container 200 from the upright state to the inverted state is repeated multiple times, the flow of the contents 220 toward the discharge port 72 is started from the above-mentioned reset state each time. The time required for the 220 to be discharged from the discharge port 72 can be ensured with good reproducibility.

Furthermore, since the second opening 31 faces the container main body 210 side, when the discharge container 200 is switched from an inverted state to an upright state, the contents 220 inside the discharge channel 73 and the upstream channel 80 are Due to its own weight, it can more quickly flow into the container body 210 from the second opening 31 through the return flow path 33 .
On the other hand, the second opening 31 faces the container main body 210 side, but since the opening area of the first opening 21a is larger than the opening area of the second opening 31, the contents 220 inside the container main body 210 are does not flow from the second opening 31 through the return flow path 33 into the discharge flow path 73, but more easily flows into the upstream flow path 80 from the first opening 21a. That is, in the inverted state, the contents 220 pass not through the second opening 31 but through the first opening 21a, the initial channel 40, the connecting channel 60, and the discharge channel 73 in this order from the discharge port 72. Since the contents 220 are discharged, a sufficient time can be secured until the contents 220 are discharged. Therefore, leakage of the contents 220 from the discharge port 72 at an unintended timing can be suppressed.
As described above, according to the present embodiment, the time required for the contents 220 to be discharged from the discharge port 72 can be ensured with good reproducibility, and the leakage of the contents 220 from the discharge port 72 at an unintended timing can be prevented. It is possible to both suppress and suppress.

The entire container body 210 is integrally molded from, for example, a resin material. Examples of the resin material include, but are not limited to, polyethylene, polypropyne, and the like. Further, the container body 210 may be made of glass, for example.
In the case of this embodiment, the container main body 210 can be deformed when a squeeze operation is performed, and can be elastically restored to its natural shape when the squeeze operation is released.
The shape of the container body 210 is not particularly limited, but for example, it may include a cylindrical body 211, a bottom 213 that closes the end of the body 211 on the container body 210 side, and a body formed to have the same diameter as the body 211. A cylindrical mouth portion 214 is connected to the end of the portion 211 on the discharge port 72 side.
In the following description, the axial direction of the cylindrical opening 214 may be simply referred to as the axial direction, and the radial direction of the opening 214 may be simply referred to as the radial direction. Furthermore, the circumferential direction of the mouth portion 214 may be simply referred to as the circumferential direction.
The discharge unit 100 is attached to the mouth portion 214 by, for example, fitting or screwing, and the opening at the end of the mouth portion 214 on the discharge port 72 side is closed by the discharge unit 100.

The storage capacity of the contents 220 of the container body 210 is not particularly limited, but is preferably, for example, 30 ml or more and 200 ml or less, more preferably 50 ml or more and 120 ml or less.

Note that the discharge container 200 may include, for example, a lid part (not shown) that is attached to cover the upper part of the discharge unit 100. The discharge container 200 can be stored with the discharge port 72 sealed by attaching a lid to the discharge unit 100.
The lid part is not particularly limited, and may be, for example, a hinge cap, a plug inserted into or externally fitted to the discharge port 72, or the like.

Here, FIG. 1 shows the discharge container 200 in an upright state.
As shown in FIG. 1, for example, when the discharge container 200 is in an upright state, the discharge port 72 is located at the upper end of the discharge container 200, and opens upward, for example. In the erect state, the side where the discharge port 72 is arranged is the upper side (upper direction), and the opposite side (container main body 210 side) is the lower side (downward direction). The container main body 210 in the erect state can stand on its own, for example, with the bottom portion 213 placed on a horizontal placement surface.
On the other hand, in the inverted state, the discharge port 72 is located at the lower end of the discharge container 200, and opens downward, for example. In the inverted state, the side where the discharge port 72 is arranged is the lower side (downward direction), and the opposite side (container main body 210 side) is the upper side (upward direction).
Note that the opening direction of the discharge port 72 in the upright state is not limited to vertically upward, and a direction including an upward component is also permitted, and the direction of the opening of the discharge port 72 in the inverted state is vertically downward. The direction is not limited, and a direction including a downward component is also allowed.

In this way, in the inverted state, the positional relationship of each part of the discharge unit 100 and the discharge container 200 is upside down. However, in the following description, unless otherwise specified, the positional relationship between the parts of the discharge unit 100 and the discharge container 200 is explained when the discharge container 200 is in an upright state. That is, in the following description, unless otherwise specified, the downward direction in FIG. 1 is assumed to be the downward direction, and the upward direction is assumed to be the upward direction.

The contents 220 are not particularly limited, but examples thereof include liquids such as liquid fragrances, essential oils, liquid laundry detergents, fabric softeners, bleaches, and cosmetics. Further, the viscosity of the liquid is preferably 10 mPa·s or more, more preferably 20 mPa·s, and preferably 1000 mPa·s or less, more preferably 500 mPa·s or less at 20°C. The viscosity of the liquid is measured using a B-type viscometer. Measuring viscosity with a B-type viscometer involves, for example, selecting an appropriate rotor or spindle depending on the dosage form and viscosity of the liquid agent, and adjusting the rotation speed (50 to 60 revolutions/min) according to the selected rotor or spindle. ) The rotor or spindle may be rotated at a rotation speed of 60 seconds, and the viscosity may be measured.

In the case of the present embodiment, the upstream flow path 80 includes, for example, an initial flow path 40 through which the contents 220 flowing from the first opening 21a flows in an inverted state, and a flow path from the initial flow path 40 toward the discharge flow path 73. A connecting channel 60 that allows the contents 220 to flow.
In the inverted state, the contents 220 inside the container body 210 are discharged through the first opening 21a, the initial flow path 40, the connection flow path 60, the boundary portion 65, and the discharge flow path 73 in this order. It is discharged from the outlet 72. Therefore, in the case of this embodiment, the boundary portion 65 between the upstream flow path 80 and the discharge flow path 73 is the boundary portion 65 between the connection flow path 60 and the discharge flow path 73.
Further, when the discharge container 200 is switched from the inverted state to the upright state, the contents 220 inside the discharge flow path 73 or the connection flow path 60 pass through the return flow path 33 and enter the container body 210 from the second opening 31. It is quickly returned inside.

In the case of this embodiment, in the upright state, the return flow path 33 is arranged at a position to catch the contents 220 falling from the discharge flow path 73 under its own weight, and the second opening 31 is located in the container in the return flow path 33. It is located at the end on the main body 210 side and faces the container main body 210 side.
As a result, when the discharge container 200 is switched from the inverted state to the upright state, the contents 220 inside the discharge flow path 73 flow into the return flow path 33 by falling under their own weight, and the contents 220 inside the discharge flow path 73 flow into the return flow path 33 from the second opening 31 to the container main body 210. is smoothly returned to the inside of the
The return flow path 33 has a return port 32 that opens at a boundary 65 between the connection flow path 60 and the discharge flow path 73. In the inverted state, the contents 220 inside the discharge channel 73 flow into the return channel 33 from the return port 32 .

Further, the discharge flow path 73 has a second inlet 71 that is disposed facing the return port 32 . In the upright state, the contents 220 inside the discharge channel 73 fall under their own weight from the second inlet port 71 toward the return port 32, pass through the return channel 33, and enter the container body 210 from the second opening 31. Inflow.

The initial flow path 40 has, for example, an initial discharge port 22 that discharges the contents 220 into the connecting flow path 60 in an inverted state, and the opening area of the initial discharge port 22 is smaller than the opening area of the first opening 21a.
As a result, in the inverted state, the flow resistance experienced by the contents 220 flowing into the connection flow path 60 from the initial discharge port 22 is greater than the flow resistance experienced by the contents 220 flowing into the initial flow path 40 from the first opening 21a. becomes larger. Therefore, sufficient time can be secured for the contents 220 to pass through the connection channel 60 and be discharged from the discharge port 72.

The initial flow path 40 has, for example, an initial discharge port 22 that discharges the contents 220 into the connection flow path 60 in an inverted state, and the initial discharge port 22 faces the discharge port 72 side in the inverted state.
Thereby, in the inverted state, the contents 220 inside the initial flow path 40 can smoothly flow into the connection flow path 60 from the initial discharge port 22 by its own weight.

The connection channel 60 also includes an inlet 66 that allows the contents 220 to flow from the connection channel 60 into the discharge channel 73. The inlet 66 opens into the boundary portion 65 . In the inverted state, the inflow port 66 is located closer to the container body 210 than the initial discharge port 22, and the connection channel 60 has a structure that allows the contents 220 to detour in the circumferential direction.

In the case of this embodiment, when the squeeze operation is performed in the inverted state, the contents 220 stored in the container body 210 are squeezed into the first opening 21a, as shown in FIGS. Passing in this order through the flow path 40, the initial discharge port 22, the connection flow path 60, the inlet 66, the boundary 65 between the connection flow path 60 and the discharge flow path 73, the second inflow port 71, and the discharge flow path 73. , are discharged to the outside from the discharge port 72.
On the other hand, when the discharge container 200 changes from the inverted state to the upright state, the contents 220 inside the discharge channel 73 are transferred to the discharge channel 73, the second The liquid passes through the inlet 71, the boundary 65, the return port 32, and the return channel 33 in this order, and flows into the container body 210 from the second opening 31. A part of the contents 220 inside the connecting channel 60 passes through the boundary 65, the return port 32, and the return channel 33 in this order, flows into the container body 210 from the second opening 31, and enters the connecting channel. The remainder of the contents 220 inside the container 60 passes through the initial discharge port 22 and the initial flow path 40 in this order and flows into the container body 210 from the first opening 21a.

Note that the dispensing operation on the dispensing container 200 is not limited to a squeeze operation, but may also be an operation of shaking the dispensing container 200 or the like. Further, the discharge container 200 may be configured such that when the discharge container 200 is turned upside down even if no squeeze operation is performed, the contents 220 flow inside the discharge unit 100 due to its own weight and are discharged from the discharge port 72 to the outside.

As shown in FIG. 1, the discharge unit 100 is configured by, for example, assembling together a cylindrical first member 10 and a cylindrical second member 20 having a smaller diameter than the first member 10. There is.
As will be described in detail below, in the case of this embodiment, the first member 10 is formed with a discharge flow path 73 and a discharge port 72, and the second member 20 is formed with an opening 21a and an initial flow path 40, respectively. has been done. Then, by combining the first member 10 and the second member 20 with each other, a connecting channel 60 and an inlet 66 are respectively formed.

First, the first member 10 will be explained.
As shown in FIGS. 5A and 5B, the first member 10 includes, for example, a cylindrical first cylindrical portion 11 whose axial direction is the vertical direction, and an upper end of the first cylindrical portion 11. An annular first blocking part 12 that closes the side opening (excluding a discharge pipe 70 described later), and a first blocking part 12 that has a smaller diameter than the first cylindrical part 11 and extends upward and downward from the center of the first blocking part 12. Discharge pipes 70 respectively protruding in the directions are provided. The discharge pipe 70 forms a discharge flow path 73 and a discharge port 72 .
The first member 10 is entirely integrally molded from, for example, a hard resin material. Examples of the hard resin material include, but are not limited to, polyethylene, polypropyne, and the like.

The inner diameter of the first cylindrical portion 11 is, for example, constant regardless of its position in the axial direction.
The first closing portion 12 is, for example, formed in an annular shape when viewed from above. The upper and lower surfaces of the first closing portion 12 are each formed horizontally and flatly.
In the case of the present embodiment, the discharge unit 100 is attached to the upper end of the container body 210 by fitting the first cylindrical portion 11 into the opening 214 of the container body 210.
More specifically, the lower part of the first cylindrical part 11 forms a stepped fitting part 11a for attachment to the upper end of the container body 210, and the outer diameter of the first cylindrical part 11 is , the diameter decreases in two stages downward.
On the other hand, a part of the inner circumferential surface of the opening 214 of the container body 210 constitutes a stepped fitted part 214a corresponding to the fitting part 11a, and the inner diameter of the opening 214 of the container main body 210 is , for example, the diameter increases upward in two steps.
The discharge unit 100 is attached to the upper end of the discharge container 200 by fitting the fitting portion 11a into the fitted portion 214a. In the present invention, the structure for mounting the discharge unit 100 on the container body 210 is not particularly limited, and the discharge unit 100 may be mounted on the mouth portion 214 by screwing or the like.
The discharge pipe 70 is arranged coaxially with the first cylindrical portion 11, for example. The end of the discharge pipe 70 on the container body 210 side, that is, the second inlet 71 is arranged closer to the discharge port 72 (above) than the lower edge of the first cylindrical portion 11 . The inner diameter and outer diameter of the discharge pipe 70 are constant regardless of the position in the axial direction.

Next, the second member 20 will be explained.
As shown in FIGS. 5A and 5B, the second member 20 includes, for example, a cylindrical second cylindrical portion 21 whose axial direction is the vertical direction, and an upper end of the second cylindrical portion 21. An annular second closing portion 25 that closes the side opening (excluding the through hole 24 described later), and a second closing portion 25 that has a smaller diameter than the second cylindrical portion 21 and extends upward and downward from the center of the second closing portion 25. It is provided with cylindrical inner tube portions 35 that respectively protrude in the directions. More specifically, the outer diameter of the inner cylindrical portion 35 is smaller than the inner diameter of the second cylindrical portion 21 .
The second member 20 is entirely integrally molded from, for example, a hard resin material.

The inner diameter of the second cylindrical portion 21 is, for example, constant regardless of the position in the axial direction, and is set to a dimension that is substantially the same as the outer diameter of the first cylindrical portion 11 of the first member 10. For example, the outer diameter of the second cylindrical portion 21 gradually decreases slightly toward the container body 210 side.
The second closing portion 25 is, for example, formed in an annular shape when viewed from above. The second closing portion 25 is a flat plate, and its plate surface faces in the vertical direction.
In the case of this embodiment, the opening of the second cylindrical portion 21 on the side of the container body 210 constitutes the first opening 21a. The first opening 21a faces toward the container body 210 in the inverted state.
The inner cylinder portion 35 includes, for example, a return pipe 30 and an enlarged diameter portion 36 formed to have a larger diameter than the return pipe 30.
For example, the return pipe 30 protrudes from the lower end of the enlarged diameter portion 36 toward the container body 210 (downward). The enlarged diameter portion 36 and the return pipe 30 are arranged coaxially with each other.
The inner diameter and outer diameter of the enlarged diameter portion 36 are, for example, constant regardless of the position in the axial direction.
The inner diameter of the enlarged diameter portion 36 is set to be substantially equal to the outer diameter of the return pipe 30 and the inner diameter of the second closing portion 25.
The upper edge of the enlarged diameter portion 36 is connected to the inner peripheral edge of the second closing portion 25 in a circumferential manner.
In the case of this embodiment, the internal space at the lower end of the enlarged diameter portion 36 constitutes the boundary portion 65 .
The inner diameter of the return pipe 30 (excluding the upper end) is, for example, constant regardless of the position in the axial direction, and the outer diameter of the return pipe 30 is, for example, constant regardless of the position in the axial direction.
The outer diameter of the return pipe 30 is set, for example, to a dimension that is substantially equivalent to the inner diameter of the second closing portion 25.

As shown in FIGS. 2(a) and 5(b), each of the surface on the discharge port 72 side and the surface on the container body 210 side of the second closing portion 25 descends toward the boundary portion 65, for example. There is. More specifically, each of the surface of the second closing portion 25 on the discharge port 72 side and the surface on the container body 210 side descends stepwise toward the boundary portion 65.
The second closing portion 25 includes, for example, a plurality (e.g., four) horizontal portions 26a, 27a, 28a, 29a arranged horizontally, and a plurality (e.g., four) horizontal portions 26a, 27a, 28a, 29a whose plate surfaces face in the circumferential direction. The step portions 26b, 27b, 28b, and 29b are included.
Each of the horizontal portions 26a to 29a and each stepped portion 26b to 29b is formed into a flat plate shape.

As shown in FIG. 2(b), each of the horizontal portions 26a to 29a is formed, for example, in the shape of a circular ring divided into four equal parts, that is, in the shape of a fan with a central angle of 90 degrees. In other words, each of the horizontal portions 26a to 29a is formed in a shape obtained by removing a small sector from the center of the sector in plan view. The horizontal portions 26a to 29a are spaced apart from each other at different positions in the vertical direction, and are arranged at different levels.
In the case of this embodiment, each of the horizontal portions 26a to 29 is arranged so as to cover the gap between the inner circumferential surface 11b of the first cylindrical portion 11 and the outer circumferential surface of the enlarged diameter portion 36 in plan view.
The horizontal portions 26a to 29a are referred to as a first horizontal portion 26a, a second horizontal portion 27a, a third horizontal portion 28a, and a fourth horizontal portion 29a, respectively, in order from one side in the circumferential direction.
In addition, in the following explanation, as shown in FIG. 2(b), one side (one direction) in the circumferential direction means a counterclockwise direction in plan view, and the other side (other direction) in the circumferential direction means a clockwise direction in plan view.
The second horizontal part 27a is arranged below the first horizontal part 26a, the third horizontal part 28a is arranged below the second horizontal part 27a, and the fourth horizontal part 29a is arranged below the first horizontal part 26a. 3 is located below the horizontal portion 28a.

Each portion of the upper edge of the second cylindrical portion 21 is connected to the outer peripheral edge of each of the horizontal portions 26a to 29a. More specifically, in the second cylindrical portion 21, a portion corresponding to the outer peripheral edge of the first horizontal portion 26a reaches the height position of the first horizontal portion 26a. In the second cylindrical portion 21, a portion corresponding to the outer peripheral edge of the second horizontal portion 27a reaches the height position of the second horizontal portion 27a. In the second cylindrical portion 21, a portion corresponding to the outer peripheral edge of the third horizontal portion 28a reaches the height position of the third horizontal portion 28a. In the second cylindrical portion 21, a portion corresponding to the outer peripheral edge of the fourth horizontal portion 29a reaches the height position of the fourth horizontal portion 29a.
Further, the upper edge of the enlarged diameter portion 36 of the inner cylinder portion 35 is connected to the inner peripheral edge of each of the horizontal portions 26a to 28a. More specifically, a portion of the inner cylinder portion 35 that corresponds to the inner peripheral edge of the first horizontal portion 26a reaches the height position of the first horizontal portion 26a. In the inner cylindrical portion 35, a portion corresponding to the inner peripheral edge of the second horizontal portion 27a reaches the height position of the second horizontal portion 27a. In the inner cylindrical portion 35, a portion corresponding to the inner peripheral edge of the third horizontal portion 28a reaches the height position of the third horizontal portion 28a.

Further, as shown in FIGS. 2(a) and 5(a), for example, the enlarged diameter portion 36 is open toward one side in the radial direction (the fourth horizontal portion 29a side). That is, the enlarged diameter portion 36 has an opening facing one side (the fourth horizontal portion 29a side) in the radial direction. The opening constitutes, for example, an inlet 66 that will be described later.
Further, the opening is, for example, an edge located on one side in the circumferential direction of the enlarged diameter portion 36 and extending vertically, and an edge located on the other side in the circumferential direction of the enlarged diameter portion 36 and extending vertically. It is defined by the extending edge and a portion of the upper edge of the discharge tube 70 (the portion sandwiched between these two edges). The inner peripheral edge of the fourth horizontal portion 29a is connected to the portion of the upper edge of the return pipe 30 that defines the opening.

The shape of each of the stepped portions 26b to 29b when viewed in a direction perpendicular to the plate surface is, for example, approximately rectangular. Each of the upper and lower sides of each stepped portion 26b to 29b is horizontal, and each of the remaining two sides of each stepped portion 26b to 29b is vertical.
The dimensions of each step portion 26b to 29b in the radial direction are, for example, set to be equal to each other, and also set to be equal to the dimension of each horizontal portion 26a to 29a in the radial direction.
The vertical dimensions of each of the stepped portions 26b to 29b are set to be different from each other, for example. More specifically, the vertical dimension of the stepped portion 26b (hereinafter referred to as the first stepped portion 26b) is larger than the vertical dimension of the stepped portion 27b (hereinafter referred to as the second stepped portion 27b), and the vertical dimension of the stepped portion 28b (hereinafter referred to as the second stepped portion 27b) , the vertical dimension of the third stepped portion 28b is larger than the vertical dimension of the first stepped portion 26b. The vertical dimension of the stepped portion 29b (hereinafter referred to as the fourth stepped portion 29b) is larger than the vertical dimension of the third stepped portion 28b.
Each step portion 26b to 29b vertically connects horizontal portions 26a to 29a that are adjacent to each other in the circumferential direction, for example. More specifically, the upper edge of the first stepped portion 26b is connected to one edge in the circumferential direction of the first horizontal portion 26a, and the lower edge of the first stepped portion 26b is connected to the second horizontal portion 27a. is connected to the other edge in the circumferential direction. The upper edge of the second stepped portion 27b is connected to one edge in the circumferential direction of the second horizontal portion 27a, and the lower edge of the second stepped portion 27b is connected to the other edge in the circumferential direction of the third horizontal portion 28a. Connected to the side edge. Further, the upper edge of the third stepped portion 28b is connected to one edge in the circumferential direction of the third horizontal portion 28a, and the lower edge of the third stepped portion 28b is connected in the circumferential direction of the fourth horizontal portion 29a. is connected to the other edge of the . The upper edge of the fourth stepped portion 29b is connected to the other edge of the first horizontal portion 26a in the circumferential direction, and the lower edge of the fourth stepped portion 29b is connected to one edge of the fourth horizontal portion 29a in the circumferential direction. Connected to the side edge.

As shown in FIGS. 5(a) and 5(b), the first member 10 and the second member 20 are assembled together by, for example, fitting the second cylindrical portion 21 into the first cylindrical portion 11. It is being In this state, the outer circumferential surface of the second cylindrical portion 21 is in liquid-tight contact with the inner circumferential surface 11b of the first cylindrical portion 11 in a circumferential manner.
The first member 10 and the second member 20 are arranged coaxially with each other. That is, the first cylindrical part 11 and the second cylindrical part 21 are arranged coaxially with each other. A portion or the entire outer circumferential surface of the second cylindrical portion 21 is arranged in close contact with the inner circumferential surface 11b of the first cylindrical portion 11. Either the lower end of the first cylindrical part 11 and the lower end of the second cylindrical part 21 are arranged at the same height position, or the lower end of the second cylindrical part 21 is lower than the lower end of the first cylindrical part 11. It is preferable that the lower part is also arranged below. The second closing part 25 of the second member 20 is arranged at the center of the first cylindrical part 11 in the vertical direction, and the horizontal parts 26a to 29a of the second closing part 25 and the first closing part 12 are different from each other. , facing each other. Further, the second closing portion 25 (each of the horizontal portions 26a to 29a and each of the stepped portions 26b to 29b) fits into the gap between the inner circumferential surface 11b of the first cylindrical portion 11 and the outer circumferential surface 70a of the discharge pipe 70. ing.
Here, a circumferential rib 23 is formed on the outer peripheral surface of the lower end portion of the second cylindrical portion 21 . By locking or pressing the rib 23 against the inner circumferential surface 11b of the first cylindrical portion 11, the second member 20 liquid-tightly closes the opening on the lower end side of the first member 10 in a circumferential manner. There is.

In the case of this embodiment, the discharge pipe 70 has a discharge flow path 73 therein. More specifically, the inner peripheral surface of the discharge pipe 70 defines a discharge passage 73, and the discharge pipe 70 (discharge passage 73) communicates the external space of the discharge unit 100 with the connection passage 60. ing.
The upper end of the discharge pipe 70 constitutes a discharge port 72 . The lower end of the discharge pipe 70 opens at a boundary 65 between the discharge flow path 73 and the connection flow path 60, and forms a second inlet 71.

Here, the diameter of the opening on the upper end side of the discharge pipe 70, that is, the diameter of the discharge port 72, is preferably, for example, 1.0 mm or more, and more preferably 1.5 mm or more and 3.0 mm or less.
Further, the amount of the content 220 discharged from the discharge port 72 by one squeeze operation is preferably, for example, 0.5 mL or more, and more preferably 1.0 mL or more and 5.0 mL or less. That is, in the discharge container 200, the amount of the contents 220 discharged from the discharge port 72 by one squeeze operation is relatively small compared to the capacity of the contents 220 described above.

In the case of this embodiment, the connection channel 60 is defined by the first member 10 and the second member 20, as described above. More specifically, the outer circumference of the connection channel 60 is defined by the inner circumferential surface 11b of the first cylindrical portion 11. Further, as described above, the discharge pipe 70 is arranged inside the first cylindrical part 11. More specifically, as shown in FIG. 6, the outer circumferential surface 70a of the discharge pipe 70 is accommodated inside the inner circumferential surface 11b of the first cylindrical portion 11. In other words, in a plan view, the discharge pipe 70 is accommodated inside the outer periphery of the connection channel 60, and the inner periphery of the connection channel 60 is defined by the outer circumferential surface 70a of the portion of the discharge pipe 70 on the side of the container body 210. There is.
Further, for example, the surface of the connection channel 60 on the outlet 72 side is defined by the surface of the first closing part 12 on the container body 210 side, and the surface of the connection channel 60 on the container body 210 side is defined by the second surface of the connection channel 60 on the container body 210 side. It is defined by the surface of the closing portion 25 on the discharge port 72 side. More specifically, the surface of the connection channel 60 on the container body 210 side is the surface on the discharge port 72 side of each of the horizontal portions 26a to 29a, and the one side (in plan view) in the circumferential direction of each of the stepped portions 26b to 28b. The fourth stepped portion 29b is configured in a step-like manner by a surface facing (counterclockwise direction) and a surface facing the other side (clockwise direction in plan view) in the circumferential direction of the fourth stepped portion 29b. The connection channel 60 connects the inner circumferential surface 11 b of the first cylindrical portion 11 , the outer circumferential surface 70 a of the lower part of the discharge pipe 70 , the surface of the first closing portion 12 on the container body 210 side, and the surface of the second closing portion 25 . This is an annular space in plan view surrounded by the surface on the discharge port 72 side. The discharge channel 73 (discharge pipe 70) is arranged at the center of the annular connection channel 60. As a result, in the inverted state, the contents 220 that have flowed into the connecting channel 60 are directed toward the inner circumferential surface 11b of the first cylindrical portion 11 and the lower part of the discharge pipe 70 toward the discharge channel 73 disposed at the center. It can flow along the outer circumferential surface 70a of , detouring in the circumferential direction.

In the case of this embodiment, the return pipe 30 has a return flow path 33 inside. More specifically, the inner wall surface of the return pipe 30 defines a return passage 33, and the return pipe 30 communicates the connection passage 60 with the internal space of the container body 210.
The upper end of the return pipe 30 opens into the boundary part 65 (inner space of the enlarged diameter part 36), and the lower end of the return pipe 30 opens into the inner space of the container body 210. That is, in the return pipe 30, the opening on the discharge port 72 side constitutes the return port 32, and the opening on the container body 210 side constitutes the second opening 31.

In this embodiment, the initial flow path 40 is defined by the second member 20, as described above. More specifically, the inner circumference of the initial flow path 40 is defined by the inner circumferential surface 21b of the second cylindrical portion 21. Moreover, as mentioned above, the return pipe 30 (inner cylinder part 35) is arranged inside the second cylindrical part 21. More specifically, as shown in FIG. 6, the outer circumferential surface 30a of the return pipe 30 is accommodated inside the inner circumferential surface 21b of the second cylindrical portion 21. In other words, in plan view, the return pipe 30 (return flow path 33) fits inside the outer periphery of the initial flow path 40, and the inner periphery of the initial flow path 40 is defined by the outer peripheral surface of the inner cylindrical portion 35. .
Further, the surface of the initial flow path 40 on the discharge port 72 side is defined by the surface of the second closing portion 25 on the container body 210 side. More specifically, the surface of the initial flow path 40 on the outlet 72 side is the surface of each of the horizontal portions 26a to 29a on the container body 210 side, and the other side (in plan view) of each of the stepped portions 26b to 28b in the circumferential direction. The fourth stepped portion 29b is configured in a step-like manner by a surface facing (clockwise direction) and a surface facing the one side (counterclockwise direction in plan view) in the circumferential direction of the fourth stepped portion 29b.
The initial flow path 40 has an annular shape in plan view surrounded by the surface of the second closing portion 25 on the container body 210 side, the inner circumferential surface 21b of the second cylindrical portion 21, and the outer circumferential surface of the inner cylindrical portion 35. It is a space of The return flow path 33 (return pipe 30) is arranged at the center of the annular initial flow path 40.

Here, the first horizontal portion 26a of the second closing portion 25 has, for example, a through hole 24 that vertically penetrates the surface of the first horizontal portion 26a on the discharge port 72 side and the surface on the container main body 210 side. It is formed. The through hole 24 communicates the initial flow path 40 (inner space of the second member 20) and the connection flow path 60 (inner space of the first member 10), and the opening of the through hole 24 on the discharge port 72 side, i.e. The opening on the surface of the first horizontal portion 26 a on the discharge port 72 side constitutes the initial discharge port 22 . Therefore, the initial discharge port 22 faces the discharge port 72 side. Further, as shown in FIGS. 3(a) and 3(b), each of the surface of the second closing portion 25 on the container body 210 side and the surface on the discharge port 72 side is connected to the initial discharge port 22 (through hole 24). It has a staircase-like shape that rises towards the top.
The through hole 24 is formed, for example, in a shape corresponding to the planar shape of the first horizontal portion 26a. That is, the initial discharge port 22 is formed in a fan shape with a center angle of approximately 90 degrees when viewed from above, and its external dimensions are set to be one size smaller than the external dimensions of the upper surface of the first horizontal portion 26a. has been done.

Further, in a state where the first member 10 and the second member 20 are assembled to each other, the lower end portion of the discharge pipe 70 is fitted into the enlarged diameter portion 36 of the inner cylinder portion 35, for example.
In the case of this embodiment, as described above, the inner diameter (circular equivalent diameter) of the enlarged diameter portion 36 is substantially equal to the outer diameter of the discharge pipe 70. Therefore, when the discharge pipe 70 is fitted into the enlarged diameter portion 36 , the outer circumferential surface 70 a of the lower end of the discharge pipe 70 is in close contact with the inner circumferential surface of the enlarged diameter portion 36 .

In the case of this embodiment, the opening of the enlarged diameter portion 36 constitutes an inflow port 66 . More specifically, for example, the lower end of the discharge pipe 70 is located below the lower surface of the third horizontal section 28a and above the upper surface of the fourth horizontal section 29a in the internal space of the enlarged diameter section 36. It is located in That is, as shown in FIG. 5(b), in the opening of the enlarged diameter portion 36, a region closer to the container body 210 (lower side) than the lower edge of the discharge pipe 70 constitutes the inflow port 66.
As a result, the second inlet 71 is separated from the connection flow path 60 by the lower end of the discharge pipe 70 and the second closing portion 25, except for the portion where the inlet 66 is open.
The shape of the inlet 66 when viewed in the radial direction is, for example, a substantially rectangular shape that is elongated in the circumferential direction (see FIG. 5(b)).
Further, at the lower end of the enlarged diameter portion 36, a space closer to the container body 210 (lower side) than the lower end of the discharge pipe 70 constitutes a boundary portion 65 between the discharge flow path 73 and the upstream flow path 80. . In the case of this embodiment, the boundary portion 65 is, for example, a region between the inlet 66 and the second inlet 71, and has a dimension in the flow direction of the contents 220. When the content 220 is discharged, the flow direction of the content 220 that has flowed into the boundary part 65 from the connection channel 60 changes from radially inward to the discharge port 72 side at the boundary part 65. It is supposed to be done.
However, in the present invention, the boundary portion 65 does not have a dimension in the flow direction of the contents 220, and is a boundary (mere opening) that sharply partitions the upstream channel 80 and the discharge channel 73. It's okay. That is, for example, the inlet 66 or the second inlet 71 may be the boundary between the discharge flow path 73 and the upstream flow path 80.

In the case of this embodiment, the initial discharge port 22 and the inflow port 66 to the discharge flow path 73 are arranged at different positions in the circumferential direction of the discharge unit 100.
More specifically, as shown in FIG. 2(b), the fourth horizontal portion 29a is arranged at a position rotated by 270 degrees toward the one side in the circumferential direction with respect to the first horizontal portion 26a. . Therefore, the inflow port 66 is arranged at a position rotated by 270 degrees toward the one side in the circumferential direction with respect to the initial discharge port 22. Further, as described above, the second inlet 71 is circumferentially surrounded by the enlarged diameter portion 36 except for the portion where the inlet 66 is open. For this reason, the contents 220 inside the connecting flow path 60 are restricted from flowing into the second inlet 71 from other than the inlet 66.
As a result, in the inverted state, the contents 220 that have flowed into the connection channel 60 from the initial discharge port 22 flow along the annular connection channel 60 toward the inflow port 66 by detouring 270 degrees in the circumferential direction. You can expect to do so. More specifically, as shown in FIGS. 3(a) and 3(b), the contents 220 flowing from the initial discharge port 22 are discharged from the second horizontal portion 27a in the annular connecting channel 60, for example. The above-mentioned portion in the circumferential direction passes through the surface on the outlet 72 side, the surface on the discharge port 72 side of the third horizontal portion 28a, and the surface on the discharge port 72 side of the fourth horizontal portion 29a in this order. It can be expected that there will be a flow in this direction. Note that a part of the contents 220 may flow in the other direction in the circumferential direction, but even in that case, the content 220 flows in a detour in the circumferential direction, straddling at least the fourth step portion 29b.

Further, in the case of the present embodiment, in the upright state, the surface of the connection channel 60 on the side of the container body 210 is lowered toward the boundary portion 65. More specifically, for example, in the upright state, the surface of the connection channel 60 on the side of the container body 210 descends stepwise toward the boundary portion 65. Therefore, in the erect state, the contents 220 inside the connecting channel 60 are directed toward the inlet 66 along each of the horizontal portions 26a to 29a and each of the stepped portions 26b to 29b while detouring 270 degrees in the circumferential direction. It can be expected that it will flow while descending.
In other words, the connection channel 60 is formed in a shape that spirals in the axial direction while turning in the circumferential direction. Thereby, the contents 220 flow down in a spiral while flowing in one direction in the circumferential direction, so that the contents 220 can smoothly flow into the boundary portion 65. Therefore, when switching from the inverted state to the upright state, the connection flow path 60 inside the connection flow path 60 can quickly return to the container body 210 from the return port 32 through the boundary portion 65.
Further, in the discharge unit 100, since the connection channel 60 having a sufficient length can be realized, even if the content 220 has low viscosity, the content 220 passes through the connection channel 60 and the discharge port in an inverted state. It becomes possible to suitably secure the time from 72 to discharge. Thereby, leakage of the contents 220 from the discharge port 72 at an unintended timing can be suppressed.
Furthermore, since the connecting flow path 60 is a space that is gradually narrowed toward the boundary portion 65 by each of the horizontal portions 26a to 29a and each of the stepped portions 26b to 29b, the connection flow path 60 is This makes it possible to delay the air exchange inside. That is, sufficient time can be ensured for the contents 220 to flow inside the connection channel 60 and flow into the discharge channel 73.

Furthermore, as shown in FIG. 4(b), the inlet 66 is, for example, a horizontal hole that faces sideways in the inverted state, and opens in a direction different from the initial discharge port 22. Note that "laterally" here means facing in a direction perpendicular to the axial direction, that is, in the radial direction.
More specifically, as described above, in the inverted state, the inflow port 66 opens toward the side where the fourth horizontal portion 29a is formed in the radial direction, and the initial discharge port 22 opens toward the bottom. It is open.
Thereby, in the inverted state, the contents 220 flowing down from the initial discharge port 22 rise along the axial direction while detouring in the circumferential direction, and flow in the radial direction when flowing into the inflow port 66. That is, in the connecting channel 60, the content 220 needs to change its flow direction, so the flow resistance that the content 220 receives becomes large, and the content 220 passes through the connecting channel 60 and exits from the discharge port 72 in the inverted state. More sufficient time can be secured until the product is discharged.

In the case of this embodiment, as shown in FIG. 1, in the upright state, the return pipe 30 is arranged closer to the container main body 210 than the end of the discharge pipe 70 on the container main body 210 side. More specifically, the return port 32 is arranged closer to the container body 210 than the second inlet 71 is. Further, as described above, the return port 32 is arranged to face the second inlet 71 (the lower end of the discharge pipe 70), and when the discharge container 200 is switched from the inverted state to the upright state, the discharge flow path The contents 220 flowing through the second inlet 73 fall under their own weight and flow into the return port 32 from the second inlet 71 .

Here, as described above, in the upright state, the surface of the second closing portion 25 on the container body 210 side rises in a stepwise manner toward the initial discharge port 22, for example. Therefore, as shown in FIGS. 4(a) and 4(b), in the inverted state, the surface of the initial flow path 40 on the discharge port 72 side (the surface of the second closing part 25 on the container main body 210 side) is initially It descends toward the discharge port 22. More specifically, the surface of the initial flow path 40 on the container body 210 side is formed, for example, in a shape that descends stepwise toward the initial discharge port 22. As a result, when the contents 220 flow toward the container main body 210 side due to their own weight in the inverted state, the contents 220 are moved by the surface of the initial flow path 40 on the container main body 210 side that is descending toward the initial discharge port 22. Since the fluid is guided and flows downward in a spiral while flowing in one direction in the circumferential direction, it is possible to smoothly flow into the initial discharge port 22.
Furthermore, even when the discharge container 200 is switched from an inverted state to an upright state, the contents 220 at the top of the connecting channel 60 are guided by the horizontal parts 26a to 29a and the stepped parts 28b to 29b. Since it flows downward in a spiral shape while flowing in the one direction in the circumferential direction, it is possible to smoothly flow into the return port 32.

Furthermore, as shown in FIGS. 3(a), 3(b), and 6, the discharge pipe 70 and the return pipe 30 are arranged to extend from each other and coaxially with each other. Therefore, in the erect state, the return port 32 is located directly below the second inflow port 71. Thereby, the contents 220 can flow into the internal space of the container body 210 from the discharge channel 73 through the return channel 33 without passing through the initial channel 40 and the connecting channel 60.
As a result, when the discharge container 200 is switched from an inverted state to an upright state, the contents 220 inside the return flow path 33 and the connection flow path 60 quickly flow into the return port 32, and the contents 220 inside the return flow path 33 It is housed inside the container body 210 via. That is, even when the discharge container 200 is switched from the upright state to the inverted state again, a sufficient amount of time can be ensured with good reproducibility until the contents 220 are discharged from the discharge port 72.

Furthermore, in the case of this embodiment, the inlet of the contents 220 from the discharge channel 73 or the connection channel 60 to the return channel 33 has a shape narrowing toward the container body 210 side.
As a result, when the discharge container 200 is switched from an inverted state to an upright state, the contents 220 falling under their own weight from the discharge channel 73 and the contents 220 flowing in from the connecting channel 60 are received at the boundary portion 65. Flow resistance is reduced, and the contents 220 can smoothly flow into the return channel 33 from the return port 32.
More specifically, the return port 32 that opens at the boundary 65 between the discharge flow path 73 and the connection flow path 60 has a shape that narrows toward the container body 210 in the erect state. That is, the boundary between the inner peripheral edge of the upper end of the return pipe 30 and the inner peripheral surface of the return pipe 30 has a tapered shape in which the inner diameter gradually increases toward the discharge port 72 side.

Here, as described above, the opening area of the first opening 21a is larger than the opening area of the second opening 31, for example. More specifically, in the bottom view, the first opening 21a and the second opening 31 are arranged coaxially with each other, and the second opening 31 is arranged inside the first opening 21a (FIG. 2(c) )reference). The inner diameter of the second opening 31 is, for example, preferably one-half or less, more preferably one-third or less, of the inner diameter of the first opening 21a.

As a result, in the inverted state, when the contents 220 flow from the container body 210 to the discharge port 72 side (downward) due to its own weight, the flow resistance at the second opening 31 is greater than the flow resistance at the first opening 21a. Become. Therefore, it can be expected that the contents 220 will be guided to flow into the first opening 21a instead of the second opening 31. That is, in the inverted state, the contents 220 inside the container body 210 can be expected to flow from the return channel 33 to the discharge channel 73 without passing through the initial channel 40 and the connecting channel 60, and This can prevent leakage from.

In addition, in the case of the present embodiment, the height position of the end (lower end) of the return pipe 30 on the container main body 210 side is higher than the height position of the end (lower end) of the second cylindrical part 21 on the container main body 210 side. It is arranged on the main body 210 side (lower side). Therefore, the second opening 31 is arranged at the end of the return pipe 30 on the container main body 210 side, and the second opening 31 is arranged closer to the container main body 210 side than the first opening 21a. As a result, in the inverted state, when the contents 220 flow from the container body 210 to the discharge port 72 side (downward) due to its own weight, the flow resistance at the second opening 31 is greater than the flow resistance at the first opening 21a. Become bigger.
That is, in the inverted state, the contents 220 flowing from the internal space of the container body 210 toward the discharge port 72 flow into the second opening 31 instead of the first opening 21a, and flow through the initial flow path 40 and the connection flow path 60. It is possible to more reliably prevent the liquid from flowing directly into the discharge flow path 73 from the return flow path 33 instead of flowing into the discharge flow path 73.

Furthermore, as shown in FIGS. 3(a) and 3(b), the internal cross-sectional area of the return pipe 30 perpendicular to the axial direction is the internal cross-sectional area of the discharge pipe 70 perpendicular to the axial direction. smaller than More specifically, for example, the minimum value of the flow path area of the return flow path 33 is smaller than the minimum value of the flow path area of the discharge flow path 73. That is, regarding the flow resistance that the contents 220 encounter when flowing, the flow resistance in the return pipe 30 is greater than the flow resistance in the discharge pipe 70. Thereby, in the inverted state, the contents 220 that have reached the boundary portion 65 can be expected to flow into the discharge channel 73 instead of the return channel 33.

[Second embodiment]
Next, a second embodiment will be described using FIGS. 7(a) to 8(b). In addition, in FIG. 8(a), the second member 20 shows a cross section along the line AA in FIG. 7(b), and in FIG. 8(b), the second member 20 shows a cross section along the line AA in FIG. A cross section taken along line BB is shown.
The discharge unit 100 according to the present embodiment is different from the discharge unit 100 according to the first embodiment described above in the following points, and in other respects, the discharge unit 100 according to the first embodiment described above is different from the discharge unit 100 according to the first embodiment described above. It is configured in the same way.

As shown in FIGS. 7(a) and 7(b), in the case of this embodiment, the surface of the second closing portion 25 of the second member 20 on the discharge port 72 side is the portion where the through hole 24 is formed. All of them are horizontally and flatly formed except for. Moreover, the inner cylinder part 35 does not have the enlarged diameter part 36, for example, but instead has an inner wall part 26c protruding from the edge of the return pipe 30 on the outlet 72 side toward the outlet 72. . In other words, the surface of the connection flow path 60 on the discharge port 72 side is not formed in a shape that descends stepwise toward the boundary portion 65, and in the inverted state, the surface of the initial flow path 40 on the container body 210 side is not formed in a step-like shape that descends toward the initial discharge port 22.

More specifically, in the case of this embodiment, the second horizontal part 27a, the third horizontal part 28a, and the fourth horizontal part 29a are arranged at the same height position (see FIG. 8(b)). ). In other words, the second horizontal portion 27a, the third horizontal portion 28a, and the fourth horizontal portion 29a are continuous with each other to form a C-shape in plan view. Therefore, in the axial direction, the second horizontal part 27a and the third horizontal part 28a are connected to each other without interposing the second step part 27b, and the third horizontal part 28a and the fourth horizontal part 29a are They are connected to each other without intervening the third step portion 28b. Further, the inner peripheral edges of each of the second horizontal portion 27a, the third horizontal portion 28a, and the fourth horizontal portion 29a are connected to the upper edge of the return pipe 30.
On the other hand, the first horizontal portion 26a is arranged above the other horizontal portions 27a, 28a, and 29a (see FIG. 8(a)). Further, the upper end of the inner wall portion 26c reaches the height position of the first horizontal portion 26a. More specifically, the curvature of the inner wall portion 26c is set to be equal to the curvature of the inner peripheral edge of the first horizontal portion 26a, and the upper edge of the inner wall portion 26c is connected to the inner peripheral edge of the first horizontal portion 26a. . Further, an edge on one side in the circumferential direction of the inner wall portion 26c is connected to an inner end portion of the first step portion 26b, and an edge on the other side in the circumferential direction of the inner wall portion 26c is on the inner side of the fourth step portion 29b. connected to the end.
Further, the inner circumferential surface of the inner wall portion 26c is in surface contact with a portion of the outer circumferential surface 70a of the lower end portion of the discharge pipe 70.

Also in the discharge unit 100 configured as described above, when the discharge container 200 is changed from an inverted state to an upright state, the contents 220 flowing through the discharge channel 73 and the connecting channel 60 smoothly flow into the return port 32. , and is housed inside the container body 210 via the return flow path 33. That is, even when the discharge container 200 is switched from the upright state to the inverted state again, the contents 220 pass through the initial channel 40, the connection channel 60, and the discharge channel 73 in this order and reach the discharge port. It is discharged from 72.

<Modified example of second embodiment>
Next, a modification of the second embodiment will be described using FIG. 9. Note that FIG. 9 shows a cross section of the discharge unit 100 along the axial direction.

In the case of this modification, the second member 20 does not have the second closing part 25, and the end of the second cylindrical part 21 on the outlet 72 side is open toward the outlet 72. The inner circumferential edge of the second cylindrical portion 21 on the outlet 72 side and the outer circumferential edge of the enlarged diameter portion 36 on the outlet 72 side define the initial outlet 22 . Therefore, the initial discharge port 22 is formed to open 360 degrees in the circumferential direction.

More specifically, as shown in FIG. 9, the second cylindrical portion 21 is open in the vertical direction, for example. Further, the edge of the second cylindrical portion 21 on the outlet 72 side is arranged at the same height as the edge of the enlarged diameter portion 36 on the outlet 72 side.
The inner diameter of the enlarged diameter portion 36 is set to be larger than the outer diameter of the discharge pipe 70, for example. Therefore, a gap is formed between the inner circumferential surface of the enlarged diameter portion 36 and the outer circumferential surface 70a of the lower end of the discharge pipe 70, and the contents 220 inside the connecting channel 60 in the inverted state are It flows into the second inlet 71 through the. That is, the outer circumferential edge of the end of the discharge pipe 70 on the container body 210 side and the portion of the inner circumferential surface of the enlarged diameter portion 36 that faces the outer circumferential edge of the end of the discharge pipe 70 on the container body 210 side are An entrance 66 is defined.
In the case of this modification, the inlet 66 is open 360 degrees in the circumferential direction and faces downward in the inverted state.

When the discharge container 200 is switched from the inverted state to the upright state and a squeeze operation is performed, the contents 220 flow into the initial flow path 40 from the first opening 21a, and the contents 220 flow into the initial flow path 40, the initial discharge port 22, and the connecting flow path 60. The liquid flows through the inlet 66, the boundary 65, the second inlet 71, and the discharge channel 73 in this order, and is discharged from the discharge outlet 72 to the outside.
When the discharge container 200 is switched from the inverted state to the upright state, the contents 220 inside the discharge channel 73 flow into the return channel 33 from the return port 32 and are returned to the container body 210 from the second opening 31. Further, a part of the content 220 inside the connection channel 60 flows into the initial channel 40 from the initial discharge port 22 and is returned to the container body 210 from the first opening 21a, and the remaining content 220 is It flows into the boundary part 65 from the inlet 66, passes through the return flow path 33, and is returned to the container body 210 from the second opening 31. That is, it is possible to realize a structure in which the contents 220 are returned to the container body 210 more smoothly.

Although each embodiment has been described above with reference to the drawings, these are merely examples of the present invention, and various configurations other than those described above may also be adopted.

For example, in the above description, an example has been described in which the discharge pipe 70 and the return pipe 30 are disposed as extensions of each other and coaxially with each other, but the present invention is not limited to this example. 30 may be arranged at different positions from each other.

Further, for example, in the above description, an example has been described in which the surface of the connection channel 60 on the side of the container body 210 descends in a stepwise manner toward the boundary portion 65, but the present invention is not limited to this example. , the surface of the connection channel 60 on the container body 210 side may be inclined downward toward the boundary portion 65.

Further, for example, in the above description, the discharge unit 100 is constructed by combining two members, the first member 10 and the second member 20, with each other. However, the present invention is not limited to this example. However, the discharge unit 100 may be composed of one member (single member).

Further, for example, in the above description, an example has been described in which the return flow path 33 is configured to return the contents 220 to the container body 210 from both the discharge flow path 73 and the connection flow path 60. The present invention is not limited to this example, and the return flow path 33 may be configured to return the contents 220 to the container body 210 only from the discharge flow path 73. Further, the return flow path 33 may be configured to return the contents 220 to the container body 210 only from the connection flow path 60.

Further, the above embodiments can be combined as long as they do not contradict each other.

10 First member 11 First cylindrical part 12 First closed part 20 Second member 21 Second cylindrical part 21a First opening 22 Initial discharge port 23 Rib 24 Through hole 25 Second closed part 30 Return pipe 31 Second opening 32 Return port 33 Return flow path 35 Inner cylinder portion 36 Expanded diameter portion 36 First peripheral wall portion 37 Second peripheral wall portion 38 Third peripheral wall portion 40 Initial flow path 60 Connection flow path 65 Boundary portion 66 Inflow port 70 Discharge pipe 71 Second Inflow port 72 Discharge port 73 Discharge channel 80 Upstream channel 100 Discharge unit 200 Discharge container 210 Container main body 211 Body section 213 Bottom section 214 Mouth and neck section 214a Fitted section 220 Contents

Claims (11)

A discharge unit that is attached to a discharge container having a container body that stores contents, and discharges the contents by causing the contents to flow inside,
a first opening and a second opening, each of which is disposed at a position on the inflow side of the contents from the container body to the discharge unit;
an upstream channel through which the contents flowing from the first opening flow;
a discharge flow path having a discharge port at the tip and causing the contents flowing from the upstream flow path to flow and be discharged;
A boundary between the upstream flow path and the discharge flow path communicates with the second opening, and the contents are returned to the container body from the discharge flow path or the upstream flow path in the upright state. a return flow path;
Equipped with
The second opening is a discharge port for the contents from the return flow path to the container body,
The opening area of the first opening is larger than the opening area of the second opening,
The second opening faces the container main body side ,
The upstream flow path is
an initial flow path through which the contents flowing from the first opening flow;
a connecting channel that causes the content to flow from the initial channel toward the discharge channel;
including;
A discharge unit in which a surface of the connection flow path on the side of the container body is downward toward the boundary portion . A discharge unit that is attached to a discharge container having a container body that stores contents, and discharges the contents by causing the contents to flow inside,
a first opening and a second opening, each of which is disposed at a position on the inflow side of the contents from the container body to the discharge unit;
an upstream channel through which the contents flowing from the first opening flow;
a discharge flow path having a discharge port at the tip and causing the contents flowing from the upstream flow path to flow and be discharged;
A boundary between the upstream flow path and the discharge flow path communicates with the second opening, and the contents are returned to the container body from the discharge flow path or the upstream flow path in the upright state. a return flow path;
a return pipe having the return flow path therein;
Equipped with
The second opening is a discharge port for the contents from the return flow path to the container body,
The opening area of the first opening is larger than the opening area of the second opening,
The second opening faces the container main body side,
The second opening is located at an end of the return pipe on the container body side,
The second opening is a discharge unit disposed closer to the container body than the first opening. A discharge unit that is attached to a discharge container having a container body that stores contents, and discharges the contents by causing the contents to flow inside,
a first opening and a second opening, each of which is disposed at a position on the inflow side of the contents from the container body to the discharge unit;
an upstream channel through which the contents flowing from the first opening flow;
a discharge flow path having a discharge port at the tip and causing the contents flowing from the upstream flow path to flow and be discharged;
A boundary between the upstream flow path and the discharge flow path communicates with the second opening, and the contents are returned to the container body from the discharge flow path or the upstream flow path in the upright state. a return flow path;
Equipped with
The second opening is a discharge port for the contents from the return flow path to the container body,
The opening area of the first opening is larger than the opening area of the second opening,
The second opening faces the container main body side,
In the discharge unit, an inlet of the contents from the discharge flow path or the upstream flow path to the return flow path has a shape narrowing toward the container main body side. The return flow path is arranged at a position to catch the contents falling under their own weight from the discharge flow path in the upright state,
The discharge unit according to any one of claims 1 to 3, wherein the second opening is located at the end of the return flow path on the side of the container body and faces the side of the container body. comprising a return pipe having the return flow path therein;
The upstream flow path is
an initial flow path through which the contents flowing from the first opening flow;
a connecting channel that causes the content to flow from the initial channel toward the discharge channel;
including;
The surface of the connection channel on the container body side is downward toward the boundary,
The discharge unit according to any one of claims 1 to 4, wherein the return pipe is located inside the outer periphery of the initial flow path in plan view. a return pipe having the return flow path therein;
a discharge pipe having the discharge flow path therein;
The discharge unit according to any one of claims 1 to 5, wherein the discharge pipe and the return pipe are arranged to extend from each other and coaxially with each other. comprising a discharge pipe having the discharge flow path therein;
The upstream flow path is
an initial flow path through which the contents flowing from the first opening flow;
a connecting channel that causes the content to flow from the initial channel toward the discharge channel;
including;
The surface of the connection channel on the container body side is downward toward the boundary,
The discharge unit according to any one of claims 1 to 6 , wherein the discharge pipe is accommodated inside the outer periphery of the connection flow path in plan view. The discharge unit according to any one of claims 1 to 7 , wherein a flow path area of the return flow path is smaller than a flow path area of the discharge flow path. A container body that stores the contents;
a discharge unit that is attached to the container body and causes the contents to flow inside and discharge;
Equipped with
The discharge unit is
a first opening and a second opening, each of which is disposed at a position on the inflow side of the contents from the container body to the discharge unit;
an upstream channel through which the contents flowing from the first opening flow;
a discharge flow path having a discharge port at the tip and causing the contents flowing from the upstream flow path to flow and be discharged;
A boundary between the upstream flow path and the discharge flow path communicates with the second opening, and the contents are returned to the container body from the discharge flow path or the upstream flow path in the upright state. a return flow path;
Equipped with
The second opening is a discharge port for the contents from the return flow path to the container body,
The opening area of the first opening is larger than the opening area of the second opening,
The second opening faces the container main body side ,
The upstream flow path is
an initial flow path through which the contents flowing from the first opening flow;
a connecting channel that causes the content to flow from the initial channel toward the discharge channel;
including;
A discharge container in which a surface of the connection flow path on the container body side is downward toward the boundary portion . A container body that stores the contents;
a discharge unit that is attached to the container body and causes the contents to flow inside and discharge;
Equipped with
The discharge unit is
a first opening and a second opening, each of which is disposed at a position on the inflow side of the contents from the container body to the discharge unit;
an upstream channel through which the contents flowing from the first opening flow;
a discharge flow path having a discharge port at the tip and causing the contents flowing from the upstream flow path to flow and be discharged;
A boundary between the upstream flow path and the discharge flow path communicates with the second opening, and the contents are returned to the container body from the discharge flow path or the upstream flow path in the upright state. a return flow path;
a return pipe having the return flow path therein;
Equipped with
The second opening is a discharge port for the contents from the return flow path to the container body,
The opening area of the first opening is larger than the opening area of the second opening,
The second opening faces the container main body side,
The second opening is located at an end of the return pipe on the container body side,
The second opening is located closer to the container main body than the first opening. A container body that stores the contents;
a discharge unit that is attached to the container body and causes the contents to flow inside and discharge;
Equipped with
The discharge unit is
a first opening and a second opening, each of which is disposed at a position on the inflow side of the contents from the container body to the discharge unit;
an upstream channel through which the contents flowing from the first opening flow;
a discharge flow path having a discharge port at the tip and causing the contents flowing from the upstream flow path to flow and be discharged;
A boundary between the upstream flow path and the discharge flow path communicates with the second opening, and the contents are returned to the container body from the discharge flow path or the upstream flow path in the upright state. a return flow path;
Equipped with
The second opening is a discharge port for the contents from the return flow path to the container body,
The opening area of the first opening is larger than the opening area of the second opening,
The second opening faces the container main body side,
In the discharge container, an inlet of the contents from the discharge flow path or the upstream flow path to the return flow path has a shape narrowing toward the container main body side.

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