JP2021130504A - Discharge unit - Google Patents

Abstract

To provide a discharge unit capable of securing a time period until a content is discharged from a discharge port with good reproducibility.SOLUTION: A discharge unit 100 is attached to a discharge container 200 with a container body 210 storing a content 220, and causes the content 220 to flow therein and discharges the content. The discharge unit 100 comprises: a first opening 21a and a second opening 31; an upstream side flow passage 80 through which the content 220 that flows in from the first opening 21a flows; a discharge flow passage 73 with a discharge port 72 at a tip thereof, which causes the content 220 flowing in from the upstream side flow passage to flow and discharges the content; and a return flow passage 33 which, in a straight standing state, returns the content 220 from the discharge flow passage 73 or the upstream side flow passage to the container body 210. The second opening 31 is the discharge port 72 that discharges the content 220 from the return flow passage 33 to the container body 210, the opening area of the first opening 21a is larger than the opening area of the second opening 31, and the second opening 31 is directed toward the container body 210 side.SELECTED DRAWING: Figure 1

Description

The present invention relates to a discharge unit.

As a discharge unit mounted on a discharge container that discharges contents, for example, there is one described in Patent Document 1. The discharge unit of Patent Document 1 (described as a spouting plug in the same document) is attached to the mouth portion of the container body (described as a spouting port 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 peripheral surface of the trap room, and a liquid return hole is formed in the lower part of the side peripheral surface of the trap room. The trap room communicates with the outside (inside the container body, the area outside the trap room) through these liquid inflow holes and liquid return holes. Further, the discharge unit has a pouring nozzle that communicates the inside of the trap room and the outside of the discharge container with each other.

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

Japanese Unexamined Patent Publication No. 2003-226377

According to the study by the inventors of the present application, there is room for improvement in the structure of the discharge unit of Patent Document 1 from the viewpoint of ensuring good reproducibility of the time until the contents are discharged.

The present invention has been made in view of the above problems, and relates to a discharge unit capable of ensuring a time until the contents are discharged with good reproducibility.

A discharge unit that is attached to a discharge container having a container body for storing the contents and that causes the contents to flow and discharge inside, and is located at a position on the inflow side of the contents from the container body to the discharge unit. The first opening and the second opening, respectively, an upstream side flow path through which the contents flowing in from the first opening flow, and a discharge port at the tip thereof, and the flow in from the upstream side flow path. The discharge flow path for flowing and discharging the contents, the boundary portion between the upstream side flow path and the discharge flow path, and the second opening are communicated with each other, and the discharge flow path or the upstream is in an upright state. A return flow path for returning the contents from the side flow path to the container body is provided, and the second opening is a discharge port for the contents from the return flow path to the container body, and the first opening. The opening area of the second opening is larger than the opening area of the second opening, and the second opening relates to a discharge unit facing the container body side.

According to the present invention, it is possible to secure the time until the contents are discharged from the discharge port with good reproducibility.

It is a vertical cross-sectional view which shows the state which the discharge unit which concerns on 1st Embodiment is attached to a 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. 2 (a). b) is a plan view, and FIG. 2 (c) is a bottom view. 3 (a) and 3 (b) are vertical cross-sectional views of the discharge unit according to the first embodiment. 4 (a) and 4 (b) are vertical cross-sectional views of the discharge unit according to the first embodiment, showing an inverted state. 5 (a) and 5 (b) are views showing the discharge unit according to the first embodiment, and FIG. 5 (a) shows a state before the first member and the second member are assembled to each other. FIG. 5 (b) is a diagram showing a state in which the first member and the second member are assembled to each other. It is a schematic diagram which shows the positional relationship in a plan view between each part of the discharge unit which concerns on 1st Embodiment. 7 (a), 7 (b) and 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. 7 (c). b) is a plan view, and FIG. 7 (c) is a bottom view. 8 (a) and 8 (b) are vertical cross-sectional views of the discharge unit according to the second embodiment. It is a vertical sectional view of the discharge unit which concerns on the modification of 2nd Embodiment.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same components are designated by the same reference numerals, and the description thereof will be omitted as appropriate.
Further, the embodiments described below are merely examples for facilitating the understanding of the present invention, and do not limit the present invention. That is, the shapes, dimensions, arrangements, etc. of the members described below can be changed or improved without departing from the spirit of the present invention, and the present invention includes equivalents thereof.
It should be noted that the various components of the discharge unit of the present invention do not have to be individually independent. A plurality of components are formed as one member, one component is formed of a plurality of members, one component is a part of another component, and one of the components. Allow overlap between the part and some of the other components, etc.

[First Embodiment]
First, the first embodiment will be described with reference to FIGS. 1 to 6. Note that each of FIGS. 1, 3 (a) and 4 (a) shows a cross section taken along the line AA of FIG. 2 (b), and is shown in FIGS. 3 (b) and 4 (b). Each shows a cross section along line BB in FIG. 2 (b). Further, in FIGS. 3A and 3B, an example of the movement of the content 220 when switching from the inverted state to the upright state is shown by an arrow. Similarly, in FIGS. 4A and 4B, an example of the movement of the content 220 in the inverted state is shown by an arrow. Further, in FIG. 5B, a part of the first member 10 of the discharge unit 100 is broken to show the internal structure of the discharge unit 100.

As shown in any of FIGS. 1 to 6, the discharge unit 100 according to the present embodiment is mounted on a discharge container 200 having a container body 210 for storing the contents 220, and the contents 220 are allowed to flow inside. Discharge. Further, the discharge container 200 according to the present embodiment includes a container main body 210 for storing the contents 220 and the above-mentioned discharge unit 100 which is attached to the container main body 210 and discharges the contents 220 by flowing it inside. .. That is, the discharge container 200 referred to here also includes the discharge unit 100.
The discharge unit 100 has a first opening 21a and a second opening 31 arranged at positions on the inflow side of the content 220 from the container body 210 to the discharge unit 100, and the content 220 flowing in from the first opening 21a, respectively. The upstream side flow path 80 through which the water flows, the discharge flow path 73 having a discharge port 72 at the tip, and flowing and discharging the contents 220 flowing in from the upstream side flow path 80, the upstream side flow path 80 and the discharge flow. The boundary portion 65 with the road 73 and the second opening 31 are communicated with each other, and the return flow path 33 for returning the content 220 from the discharge flow path 73 or the upstream side flow path 80 to the container main body 210 in an upright state. The second opening 31 is a discharge port for the contents 220 from the return flow path 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, and the second opening 31 Is facing the container body 210 side.
Here, the container body 210 side is a side opposite to the discharge port 72 side when the discharge unit 100 is mounted on the container body 210. In the case of the present 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 content 220 of the container main body 210 flows into the upstream side flow path 80 from the first opening 21a and passes through the discharge flow path 73. It is discharged from the discharge port 72.
For example, when a squeeze operation for squeezing the discharge container 200 is performed, the content 220 is discharged from the discharge port 72 of the discharge unit 100.

According to the present embodiment, when the discharge container 200 is switched from the inverted state to the upright state, the contents 220 inside the discharge flow path 73 and the upstream side flow path 80 pass through the return flow path 33 and become the first. 2 It is promptly returned to the inside of the container body 210 from the opening 31. Therefore, the insides of the discharge flow path 73 and the upstream side flow path 80 are promptly emptied (reset). As a result, when the discharge container 200 is switched from the upright state to the inverted state again, the content 220 is discharged from the discharge port 72 through the upstream side flow path 80 and the discharge flow path 73. can. That is, even if the operation of switching the discharge container 200 from the upright state to the inverted state is repeated a plurality of times, the contents 220 start to flow from the reset state to the discharge port 72 each time. The time until the 220 is discharged from the discharge port 72 can be ensured with good reproducibility.

Further, since the second opening 31 faces the container body 210 side, when the discharge container 200 is switched from the inverted state to the upright state, the contents 220 inside the discharge flow path 73 and the upstream side flow path 80 Can more quickly flow into the inside of the container body 210 from the second opening 31 through the return flow path 33 due to its own weight.
On the other hand, although the second opening 31 faces the container body 210 side, 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 body 210 in the inverted state. Does not flow from the second opening 31 into the discharge flow path 73 through the return flow path 33, but easily flows into the upstream side flow path 80 from the first opening 21a. That is, in the inverted state, the content 220 passes through the first opening 21a, the initial flow path 40, the connection flow path 60, and the discharge flow path 73 in this order instead of the second opening 31 from the discharge port 72. Since it is discharged, it is possible to secure a sufficient time until the content 220 is discharged. Therefore, it is possible to suppress leakage of the content 220 from the discharge port 72 at an unintended timing.
As described above, according to the present embodiment, the time until the content 220 is discharged from the discharge port 72 is ensured with good reproducibility, and the content 220 leaks from the discharge port 72 at an unintended timing. It is possible to achieve both suppression and suppression.

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

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

The discharge container 200 may include, for example, a lid portion (not shown) that is mounted so as to cover the upper portion of the discharge unit 100. The discharge container 200 can be stored in a sealed state by attaching a lid to the discharge unit 100.
The lid portion is not particularly limited, and may be, for example, a hinge cap, a plug inserted or fitted to the discharge port 72, or the like.

Here, FIG. 1 shows an upright state of the discharge container 200.
As shown in FIG. 1, in the discharge container 200, for example, in an upright state, the discharge port 72 is located at the upper end of the discharge container 200 and is opened upward, for example. In the upright state, the side on which the discharge port 72 is arranged is upward (upward), and the opposite side (container body 210 side) is downward (downward). The container body 210 in the upright state can stand on its own, for example, with the bottom portion 213 placed on a horizontal mounting 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 on which the discharge port 72 is arranged is downward (downward), and the opposite side (container body 210 side) is upward (upward).
The direction of the opening of the discharge port 72 in the upright state is not limited to vertically upward, and a direction including an upward component is also allowed, and the direction of the opening of the discharge port 72 in the inverted state is vertically downward. It is not limited, and a direction containing a downward component is also allowed.

As described above, in the inverted state, the positional relationship between the discharge unit 100 and the discharge container 200 is upside down. However, in the following description, the positional relationship of each part of the discharge unit 100 and the discharge container 200 describes the positional relationship when the discharge container 200 is in the upright state unless otherwise specified. That is, in the following description, unless otherwise specified, it is assumed that the downward direction in FIG. 1 is downward and the upward direction is upward.

The content 220 is not particularly limited, and examples thereof include liquids such as liquid fragrances, essential oils, liquid detergents for clothing, fabric softeners, bleaches, and cosmetics. The viscosity of the liquid is preferably 10 mPa · s or more, more preferably 20 mPa · s, and more preferably 1000 mPa · s or less, more preferably 500 mPa · s or less at 20 ° C. The viscosity of the liquid is measured with a B-type viscometer. To measure the viscosity with a B-type viscometer, for example, select an appropriate rotor or spindle according to the dosage type and viscosity of the liquid agent, and the number of rotations (50 to 60 rotations / minute) according to the selected rotor or spindle. ) May be used to rotate the rotor or spindle, and the viscosity at the time when the rotation time reaches 60 seconds may be measured.

In the case of the present embodiment, the upstream flow path 80 is, for example, in an inverted state, the initial flow path 40 through which the contents 220 flowing in from the first opening 21a flow, and the initial flow path 40 toward the discharge flow path 73. Includes a connecting flow path 60 for flowing the contents 220.
In the inverted state, the contents 220 inside the container main body 210 pass 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 to discharge. It is discharged from the outlet 72. Therefore, in the case of the present embodiment, the boundary portion 65 between the upstream side 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 pass through the second opening 31 to the container body 210. It is quickly returned to the inside.

In the case of the present embodiment, in the upright state, the return flow path 33 is arranged at a position where the content 220 that falls by its own weight from the discharge flow path 73 is captured, and the second opening 31 is a container in the return flow path 33. It is located at the end of 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 content 220 inside the discharge flow path 73 flows into the return flow path 33 due to its own weight drop, and the container body 210 is passed through the second opening 31. It is smoothly returned to the inside of.
The return flow path 33 has a return port 32 that is open at the boundary portion 65 between the connection flow path 60 and the discharge flow path 73. In the inverted state, the contents 220 inside the discharge flow path 73 flow into the return flow path 33 from the return port 32.

Further, the discharge flow path 73 has a second inflow port 71 arranged so as to face the return port 32. In the upright state, the contents 220 inside the discharge flow path 73 drop by their own weight from the second inflow port 71 toward the return port 32, pass through the return flow path 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 for discharging the contents 220 to the connection 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 received by the content 220 flowing into the connection flow path 60 from the initial discharge port 22 is greater than the flow resistance received by the content 220 flowing into the initial flow path 40 from the first opening 21a. Becomes larger. Therefore, it is possible to secure a sufficient time until the content 220 is discharged from the discharge port 72 through the connection flow path 60.

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

Further, the connection flow path 60 includes an inflow port 66 for flowing the contents 220 from the connection flow path 60 into the discharge flow path 73. The inflow port 66 is open to 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 flow path 60 has a structure that bypasses the content 220 in the circumferential direction.

In the case of the present embodiment, when the squeeze operation is performed in the inverted state, as shown in FIGS. 4A and 4B, the content 220 stored in the container body 210 has the first opening 21a, the initial stage. Passing through the flow path 40, the initial discharge port 22, the connection flow path 60, the inflow port 66, the boundary portion 65 between the connection flow path 60 and the discharge flow path 73, the second inflow port 71, and the discharge flow path 73 in this order. , Is 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, as shown in FIGS. 3 (a) and 3 (b), the contents 220 inside the discharge flow path 73 are the discharge flow paths 73 and the second. It flows into the container body 210 through the second opening 31 through the inflow port 71, the boundary portion 65, the return port 32, and the return flow path 33 in this order. A part of the contents 220 inside the connection flow path 60 passes through the boundary portion 65, the return port 32, and the return flow path 33 in this order, flows into the container main body 210 from the second opening 31, and is a connection flow path. The rest of the contents 220 inside the 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.

The discharge operation for the discharge container 200 is not limited to the squeeze operation, and may be an operation of swinging the discharge container 200 or the like. Further, the discharge container 200 may be configured such that when the content 220 is in an inverted state, the content 220 flows inside the discharge unit 100 by its own weight and is discharged from the discharge port 72 to the outside even if the squeeze operation is not performed.

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

First, the first member 10 will be described.
As shown in FIGS. 5 (a) and 5 (b), the first member 10 has, for example, a cylindrical first tubular portion 11 whose axial direction is the vertical direction and an upper end of the first tubular portion 11. The annular first closed portion 12 that closes the opening on the side (excluding the discharge pipe 70 described later), has a smaller diameter than the first cylindrical portion 11, and is vertically above and below the central portion of the first closed portion 12. A discharge pipe 70 that protrudes in each direction is provided. The discharge pipe 70 forms a discharge flow path 73 and a discharge port 72.
The first member 10 is integrally molded as a whole by, for example, a hard resin material. The hard resin material is not particularly limited, and examples thereof include polyethylene and polypropylene.

The inner diameter of the first tubular portion 11 is constant regardless of, for example, the position in the axial direction.
The first closed portion 12 is formed in an annular shape, for example, in a plan view. The upper surface and the lower surface of the first closed portion 12 are formed horizontally and flat, respectively.
In the case of the present embodiment, in the discharge unit 100, the discharge unit 100 is attached to the upper end portion of the container body 210 by fitting the first tubular portion 11 into the mouth portion 214 of the container body 210.
More specifically, the lower portion of the first tubular portion 11 constitutes a stepped fitting portion 11a for mounting on the upper end portion of the container body 210, and the outer diameter of the first tubular portion 11 is , The diameter is reduced in two steps downward.
On the other hand, a part of the inner peripheral surface of the mouth portion 214 of the container body 210 constitutes a stepped fitted portion 214a corresponding to the fitting portion 11a, and the inner diameter of the mouth portion 214 of the container body 210 is For example, the diameter is expanded in two steps upward.
By fitting the fitting portion 11a into the fitted portion 214a, the discharge unit 100 is attached to the upper end portion of the discharge container 200. 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, for example, the first tubular portion 11. The end of the discharge pipe 70 on the container body 210 side, that is, the second inflow port 71 is arranged on the discharge port 72 side (upper side) of the lower edge of the first tubular portion 11. The inner and outer diameters of the discharge pipe 70 are constant regardless of the position in the axial direction.

Next, the second member 20 will be described.
As shown in FIGS. 5 (a) and 5 (b), the second member 20 has, for example, a cylindrical second tubular portion 21 whose axial direction is the vertical direction and an upper end of the second tubular portion 21. The annular second closing portion 25 that closes the opening on the side (excluding the through hole 24 described later), has a smaller diameter than the second cylindrical portion 21, and is vertically above and below the central portion of the second closing portion 25. It is provided with a cylindrical inner cylinder portion 35 that protrudes in each direction. More specifically, the outer diameter of the inner cylinder portion 35 is smaller than the inner diameter of the second tubular portion 21.
The entire second member 20 is integrally molded with, for example, a hard resin material.

The inner diameter of the second tubular portion 21 is, for example, constant regardless of the position in the axial direction, and is set to have substantially the same dimensions as the outer diameter of the first tubular portion 11 of the first member 10. The outer diameter of the second tubular portion 21 is gradually reduced toward the container body 210, for example.
The second closed portion 25 is formed in an annular shape, for example, in a plan view. The second closing portion 25 is a flat plate, and the plate surface thereof faces in the vertical direction.
In the case of the present embodiment, the opening on the container body 210 side in the second tubular portion 21 constitutes the first opening 21a. The first opening 21a faces the container body 210 side in the inverted state.
The inner cylinder portion 35 includes, for example, a return pipe 30 and a diameter-expanded portion 36 formed having a diameter larger than that of the return pipe 30.
The return pipe 30 protrudes from the lower end of the enlarged diameter portion 36 toward the container body 210 side (downward), for example. The enlarged diameter portion 36 and the return pipe 30 are arranged coaxially with each other.
The inner and outer diameters of the enlarged diameter portion 36 are constant regardless of, for example, the position in the axial direction.
The inner diameter of the enlarged diameter portion 36 is set to have substantially the same dimensions as 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 the present embodiment, the internal space of the lower end portion of the enlarged diameter portion 36 constitutes the boundary portion 65.
The inner diameter of the return pipe 30 (excluding the upper end) is constant regardless of the position in the axial direction, for example, and the outer diameter of the return pipe 30 is constant regardless of the position in the axial direction, for example.
The outer diameter of the return pipe 30 is set to, for example, substantially the same as the inner diameter of the second closing portion 25.

As shown in FIGS. 2A and 5B, 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 toward, for example, the boundary portion 65. 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 closed portion 25 includes, for example, a plurality of horizontally arranged (for example, four) horizontal portions 26a, 27a, 28a, 29a and a plurality of horizontally arranged horizontal portions (for example, four) whose plate surfaces face in the circumferential direction. 26b, 27b, 28b, 29b, and the like.
The horizontal portions 26a to 29a and the stepped portions 26b to 29b are each formed in a flat plate shape.

As shown in FIG. 2B, each of the horizontal portions 26a to 29a is formed, for example, in a plan view, in a shape obtained by dividing the annulus into four equal parts, that is, a fan surface shape having 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 fan shape from the center of the fan shape in a plan view. The horizontal portions 26a to 29a are separated from each other at different positions in the vertical direction, and are arranged in a stepped manner.
In the case of the present embodiment, the horizontal portions 26a to 29 are arranged so as to cover the gap between the inner peripheral surface 11b of the first tubular portion 11 and the outer peripheral surface of the enlarged diameter portion 36 in a 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 the following description, as shown in FIG. 2B, one (one direction) in the circumferential direction means a counterclockwise direction in a plan view, and the other (other direction) in the circumferential direction. Means the clockwise direction in plan view.
The second horizontal portion 27a is arranged below the first horizontal portion 26a, the third horizontal portion 28a is arranged below the second horizontal portion 27a, and the fourth horizontal portion 29a is the second horizontal portion 29a. 3 It is arranged below the horizontal portion 28a.

Each portion of the upper edge of the second tubular portion 21 is connected to the outer peripheral edge of each of the horizontal portions 26a to 29a. More specifically, in the second tubular portion 21, the 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 tubular portion 21, the 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 tubular portion 21, the 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 tubular portion 21, the 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, in the inner cylinder portion 35, the portion corresponding to the inner peripheral edge of the first horizontal portion 26a reaches the height position of the first horizontal portion 26a. In the inner cylinder portion 35, the 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 cylinder portion 35, the 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. 2A and 5A, for example, the diameter-expanded portion 36 is open toward one side (fourth horizontal portion 29a side) in the radial direction. That is, the enlarged diameter portion 36 has an opening facing one side (fourth horizontal portion 29a side) in the radial direction. The opening constitutes, for example, an inflow port 66, which will be described later.
Further, for example, the opening is located on one side of the enlarged diameter portion 36 in the circumferential direction and extends vertically, and the opening is located on the other side of the enlarged diameter portion 36 in the circumferential direction and is vertically extended. It is defined by an extending edge and a part of the upper edge of the discharge pipe 70 (a 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 shapes of the stepped portions 26b to 29b viewed in the direction orthogonal to the plate surface are, for example, substantially rectangular. Each of the upper side and the lower side of each step portion 26b to 29b is horizontal, and each of the remaining two sides of each step portion 26b to 29b is vertical.
The dimensions of the stepped portions 26b to 29b in the radial direction are set to, for example, the same dimensions as each other, and are set to be the same as the dimensions of the horizontal portions 26a to 29a in the radial direction.
The vertical dimensions of the stepped portions 26b to 29b are set to different dimensions, for example. More specifically, the vertical dimension of the step portion 26b (hereinafter referred to as the first step portion 26b) is larger than the vertical dimension of the step portion 27b (hereinafter referred to as the second step portion 27b), and the step portion 28b (hereinafter referred to as the second step portion 27b). , The vertical dimension of the third step portion 28b) is larger than the vertical dimension of the first step 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.
The stepped portions 26b to 29b connect the horizontal portions 26a to 29a that are adjacent to each other in the circumferential direction up and down, for example. More specifically, the upper edge portion of the first step portion 26b is connected to the edge portion on one side in the circumferential direction of the first horizontal portion 26a, and the lower edge portion of the first step portion 26b is the second horizontal portion 27a. It is connected to the other edge in the circumferential direction of. The upper edge of the second step 27b is connected to one edge of the second horizontal 27a in the circumferential direction, and the lower edge of the second step 27b is the other in the circumferential direction of the third horizontal 28a. It is connected to the side edge. Further, the upper edge portion of the third step portion 28b is connected to one edge portion in the circumferential direction of the third horizontal portion 28a, and the lower edge portion of the third step portion 28b is connected to the circumferential direction of the fourth horizontal portion 29a. Is connected to the other edge of the. The upper edge portion of the fourth step portion 29b is connected to the other edge portion in the circumferential direction of the first horizontal portion 26a, and the lower edge portion of the fourth step portion 29b is one in the circumferential direction of the fourth horizontal portion 29a. It is connected to the side edge.

As shown in FIGS. 5A and 5B, the first member 10 and the second member 20 are assembled to each other, for example, by fitting the second tubular portion 21 into the first tubular portion 11. Has been done. In this state, the outer peripheral surface of the second tubular portion 21 is in close contact with the inner peripheral surface 11b of the first tubular 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 tubular portion 11 and the second tubular portion 21 are arranged coaxially with each other. A part or the whole of the outer peripheral surface of the second tubular portion 21 is arranged in close contact with the inner peripheral surface 11b of the first tubular portion 11. The lower end of the first tubular portion 11 and the lower end of the second tubular portion 21 are arranged at the same height position as each other, or the lower end of the second tubular portion 21 is from the lower end of the first tubular portion 11. Is also preferably located below. The second closed portion 25 of the second member 20 is arranged at the central portion of the first tubular portion 11 in the vertical direction, and the horizontal portions 26a to 29a and the first closed portion 12 of the second closed portion 25 are , Facing each other. Further, the second closing portion 25 (each horizontal portion 26a to 29a and each step portion 26b to 29b) is fitted in the gap between the inner peripheral surface 11b of the first tubular portion 11 and the outer peripheral 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 tubular portion 21. When the rib 23 is locked or pressure-contacted with respect to the inner peripheral surface 11b of the first tubular portion 11, the second member 20 closes the opening on the lower end side of the first member 10 in a circular manner in a liquid-tight manner. There is.

In the case of this embodiment, the discharge pipe 70 has a discharge flow path 73 inside. More specifically, the inner peripheral surface of the discharge pipe 70 defines the discharge flow path 73, and the discharge pipe 70 (discharge flow path 73) communicates the external space of the discharge unit 100 with the connection flow path 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 the boundary portion 65 between the discharge flow path 73 and the connection flow path 60, and constitutes the second inflow port 71.

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

In the case of the present embodiment, as described above, the connection flow path 60 is defined by the first member 10 and the second member 20. More specifically, the outer circumference of the connection flow path 60 is defined by the inner peripheral surface 11b of the first tubular portion 11. Further, as described above, the discharge pipe 70 is arranged inside the first tubular portion 11. More specifically, as shown in FIG. 6, the outer peripheral surface 70a of the discharge pipe 70 is housed inside the inner peripheral surface 11b of the first tubular portion 11. In other words, in a plan view, the discharge pipe 70 is housed inside the outer circumference of the connecting flow path 60, and the inner circumference of the connecting flow path 60 is defined by the outer peripheral surface 70a of the portion of the discharge pipe 70 on the container body 210 side. There is.
Further, for example, the surface of the connection flow path 60 on the discharge port 72 side is defined by the surface of the first closing portion 12 on the container body 210 side, and the surface of the connection flow path 60 on the container body 210 side is the second surface. It is defined by the surface of the closing portion 25 on the discharge port 72 side. More specifically, the surface of the connection flow path 60 on the container body 210 side is one side (in a plan view) of the surface of each of the horizontal portions 26a to 29a on the discharge port 72 side and the circumferential direction of each of the step portions 26b to 28b. A surface facing the counterclockwise direction) and a surface facing the other side (clockwise direction in a plan view) in the circumferential direction of the fourth step portion 29b are formed in a stepped shape. The connection flow path 60 includes an inner peripheral surface 11b of the first tubular portion 11, an outer peripheral surface 70a of the lower portion of the discharge pipe 70, a surface of the first closing portion 12 on the container body 210 side, and a second closing portion 25. It is an annular space in a plan view surrounded by a surface on the discharge port 72 side. The discharge flow path 73 (discharge pipe 70) is arranged at the center of the annular connection flow path 60. As a result, in the inverted state, the contents 220 flowing into the connection flow path 60 are directed toward the discharge flow path 73 arranged at the center, and the inner peripheral surface 11b of the first tubular portion 11 and the lower portion of the discharge pipe 70. It can flow along the outer peripheral surface 70a of the above while detouring in the circumferential direction.

In the case of the present embodiment, the return pipe 30 has a return flow path 33 inside. More specifically, the inner wall surface of the return pipe 30 defines the return flow path 33, and the return pipe 30 communicates the connection flow path 60 with the internal space of the container body 210.
The upper end of the return pipe 30 is open to the boundary portion 65 (inner space of the enlarged diameter portion 36), and the lower end of the return pipe 30 is open to the internal 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 the case of the present embodiment, as described above, the initial flow path 40 is defined by the second member 20. More specifically, the inner circumference of the initial flow path 40 is defined by the inner peripheral surface 21b of the second tubular portion 21. Further, as described above, the return pipe 30 (inner cylinder portion 35) is arranged inside the second tubular portion 21. More specifically, as shown in FIG. 6, the outer peripheral surface 30a of the return pipe 30 is housed inside the inner peripheral surface 21b of the second tubular portion 21. In other words, in a plan view, the return pipe 30 (return flow path 33) is housed inside the outer circumference of the initial flow path 40, and the inner circumference of the initial flow path 40 is defined by the outer peripheral surface of the inner cylinder 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 discharge port 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 a plan view) of each of the step portions 26b to 28b in the circumferential direction. It is formed in a stepped shape by a surface facing a clockwise direction) and a surface facing one side (counterclockwise direction in a plan view) in the circumferential direction of the fourth step portion 29b.
The initial flow path 40 is an annular shape in a plan view surrounded by a surface of the second closing portion 25 on the container body 210 side, an inner peripheral surface 21b of the second tubular portion 21, and an outer peripheral surface of the inner tubular portion 35. Space. The return flow path 33 (return pipe 30) is arranged in the center of the annular initial flow path 40.

Here, in the first horizontal portion 26a of the second closing portion 25, for example, a through hole 24 that penetrates the surface of the first horizontal portion 26a on the discharge port 72 side and the surface of the container body 210 side in the vertical direction is provided. It is formed. The through hole 24 communicates the initial flow path 40 (internal space of the second member 20) and the connection flow path 60 (internal space of the first member 10), and is an opening of the through hole 24 on the discharge port 72 side, that is, The opening on the surface of the first horizontal portion 26a 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. 3A and 3B, 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 the initial discharge port 22 (through hole 24). It has a shape that rises stepwise toward.
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 surface shape having a central angle of approximately 90 degrees in a plan view, 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, for example, the lower end portion of the discharge pipe 70 is fitted into the enlarged diameter portion 36 of the inner cylinder portion 35.
In the case of the present embodiment, as described above, the inner diameter (circular equivalent diameter) of the enlarged diameter portion 36 is substantially the same as the outer diameter of the discharge pipe 70. Therefore, in a state where the discharge pipe 70 is fitted in the diameter-expanded portion 36, the outer peripheral surface 70a of the lower end portion of the discharge pipe 70 is in close contact with the inner peripheral surface of the diameter-expanded portion 36.

In the case of the present embodiment, the opening of the enlarged diameter portion 36 constitutes the 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 portion 28a and above the upper surface of the fourth horizontal portion 29a in the internal space of the enlarged diameter portion 36. Is located in. That is, as shown in FIG. 5B, in the opening of the enlarged diameter portion 36, the region on the container body 210 side (lower side) of the lower edge of the discharge pipe 70 constitutes the inflow port 66.
As a result, the second inflow port 71 is separated from the connecting flow path 60 by the lower end portion of the discharge pipe 70 and the second closing portion 25, except for the portion where the inflow port 66 is open.
The shape of the inflow port 66 viewed in the radial direction is, for example, a substantially rectangular shape that is long in the circumferential direction (see FIG. 5B).
Further, at the lower end of the enlarged diameter portion 36, the space on the container body 210 side (lower side) of the lower end of the discharge pipe 70 constitutes the boundary portion 65 between the discharge flow path 73 and the upstream side flow path 80. .. In the case of the present embodiment, the boundary portion 65 is, for example, a region between the inflow port 66 and the second inflow port 71, and is a region having dimensions in the flow direction of the content 220. When the content 220 is discharged, the flow direction of the content 220 flowing into the boundary 65 from the connection flow path 60 changes from the radial inward direction to the discharge port 72 side at the boundary portion 65. It is designed to do.
However, in the present invention, the boundary portion 65 does not have a dimension in the flow direction of the content 220, and is a boundary (simple opening) that steeply partitions the upstream side flow path 80 and the discharge flow path 73. You may. That is, for example, the inflow port 66 or the second inflow port 71 may be the boundary between the discharge flow path 73 and the upstream side flow path 80.

In the case of the present 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. 2B, 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 inflow port 71 is circularly surrounded by the enlarged diameter portion 36 except for the portion where the inflow port 66 is open. Therefore, it is restricted that the contents 220 inside the connecting flow path 60 flow into the second inflow port 71 from other than the inflow port 66.
As a result, in the inverted state, the content 220 flowing into the connection flow path 60 from the initial discharge port 22 flows 270 degrees in the circumferential direction along the annular connection flow path 60 toward the inflow port 66. You can expect to do it. More specifically, as shown in FIGS. 3A and 3B, the content 220 flowing in from the initial discharge port 22 is discharged from the second horizontal portion 27a, for example, in the annular connection flow path 60. The above-mentioned one in the circumferential direction via 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 to flow in the direction. A part of the content 220 may flow in the other direction in the circumferential direction, but even in that case, the content 220 bypasses at least the fourth step portion 29b and flows in the circumferential direction.

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

Further, as shown in FIG. 4B, the inflow port 66 is, for example, a lateral hole that is laterally oriented in an inverted state, and is opened in a direction different from that of the initial discharge port 22. The term "horizontal orientation" as used herein means that the orientation is orthogonal to the axial direction, that is, 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 faces downward. Is open.
As a result, in the inverted state, the content 220 flowing down from the initial discharge port 22 rises along the axial direction while detouring in the circumferential direction, and flows in the radial direction when flowing into the inflow port 66. That is, in the connection flow path 60, since the content 220 needs to change the flow direction, the flow resistance received by the content 220 increases, and the content 220 passes through the connection flow path 60 from the discharge port 72 in the inverted state. It is possible to secure a sufficient time until the discharge.

In the case of the present embodiment, as shown in FIG. 1, in the upright state, the return pipe 30 is arranged closer to the container body 210 than the end of the discharge pipe 70 on the container body 210 side. More specifically, the return port 32 is arranged closer to the container body 210 than the second inflow port 71. Further, as described above, the return port 32 is arranged to face the second inflow port 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 content 220 flowing through the 73 falls by its own weight and flows into the return port 32 from the second inflow port 71.

Here, as described above, in the upright state, the surface of the second closing portion 25 on the container body 210 side rises stepwise toward, for example, the initial discharge port 22. Therefore, as shown in FIGS. 4A and 4B, in the inverted state, the surface of the initial flow path 40 on the discharge port 72 side (the surface of the second closing portion 25 on the container body 210 side) is initially It is descending 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 content 220 flows toward the container body 210 due to its own weight in the inverted state, the content 220 is lowered toward the initial discharge port 22 by the surface of the initial flow path 40 on the container body 210 side. Since it is guided and flows down in a spiral while flowing in one direction in the circumferential direction, it can smoothly flow into the initial discharge port 22.
Further, even when the discharge container 200 is switched from the inverted state to the upright state, the contents 220 above the connecting flow path 60 are guided by the horizontal portions 26a to 29a and the stepped portions 28b to 29b. Therefore, since it flows down in a spiral while flowing in the above-mentioned one direction in the circumferential direction, it can smoothly flow into the return port 32.

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

Further, in the case of the present embodiment, the inflow port of the content 220 from the discharge flow path 73 or the connection flow path 60 to the return flow path 33 is narrowed toward the container body 210 side.
As a result, when the discharge container 200 is switched from the inverted state to the upright state, the content 220 that falls by its own weight from the discharge flow path 73 and the content 220 that flows in from the connection flow path 60 are received at the boundary portion 65. The flow resistance is reduced, and the content 220 can smoothly flow into the return flow path 33 from the return port 32.
More specifically, the return port 32 opened at the boundary portion 65 between the discharge flow path 73 and the connection flow path 60 has a shape narrowed toward the container body 210 side in the upright 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, for example, the opening area of the second opening 31. More specifically, in 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 half or less, more preferably 1/3 or less of the inner diameter of the first opening 21a.

As a result, when the content 220 flows from the container body 210 to the discharge port 72 side (downward) due to its own weight in the inverted state, the flow resistance at the second opening 31 is larger than the flow resistance at the first opening 21a. Become. Therefore, it can be expected that the content 220 is 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 flow path 33 into the discharge flow path 73 without passing through the initial flow path 40 and the connection flow path 60, and the discharge port 72. It is possible to prevent leakage from the container.

Further, in the case of the present embodiment, the height position of the end (lower end) of the return pipe 30 on the container body 210 side is higher than the height position of the end (lower end) of the second tubular portion 21 on the container 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 body 210 side, and the second opening 31 is arranged closer to the container body 210 than the first opening 21a. As a result, when the content 220 flows from the container body 210 to the discharge port 72 side (downward) due to its own weight in the inverted state, the flow resistance at the second opening 31 is higher than the flow resistance at the first opening 21a. Become bigger.
That is, in the inverted state, the content 220 flowing from the internal space of the container body 210 toward the discharge port 72 flows into the second opening 31 instead of the first opening 21a, and passes through the initial flow path 40 and the connection flow path 60. It is possible to more reliably suppress the inflow from the return flow path 33 directly into the discharge flow path 73 without doing so.

Further, as shown in FIGS. 3A and 3B, the inner space cross-sectional area of the return pipe 30 orthogonal to the axial direction is the inner space cross-sectional area of the discharge pipe 70 orthogonal 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, with respect to the flow resistance received when the content 220 flows, the flow resistance in the return pipe 30 is larger than the flow resistance in the discharge pipe 70. As a result, in the inverted state, the content 220 that has reached the boundary portion 65 can be expected to flow into the discharge flow path 73 instead of the return flow path 33.

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

As shown in FIGS. 7 (a) and 7 (b), in the case of the present embodiment, the surface of the second closing portion 25 of the second member 20 on the discharge port 72 side is a portion where the through hole 24 is formed. Except for, each is formed horizontally and flatly. Further, the inner cylinder portion 35 does not have, for example, the enlarged diameter portion 36, but instead has an inner wall portion 26c protruding from the edge of the return pipe 30 on the discharge port 72 side toward the discharge port 72 side. .. 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 shape that descends stepwise toward the initial discharge port 22.

More specifically, in the case of the present embodiment, the second horizontal portion 27a, the third horizontal portion 28a, and the fourth horizontal portion 29a are arranged at the same height position as each other (see FIG. 8B). ). In other words, the second horizontal portion 27a, the third horizontal portion 28a, and the fourth horizontal portion 29a are connected to each other to form a C-shape in a plan view. Therefore, in the axial direction, the second horizontal portion 27a and the third horizontal portion 28a are connected to each other without passing through the second step portion 27b, and the third horizontal portion 28a and the fourth horizontal portion 29a are connected to each other. They are connected to each other without passing through the third step portion 28b. Further, the inner peripheral edges 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, 29a (see FIG. 8A). 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, the edge portion on one side of the inner wall portion 26c in the circumferential direction is connected to the inner end portion of the first step portion 26b, and the edge portion on the other side in the circumferential direction of the inner wall portion 26c is inside the fourth step portion 29b. It is connected to the end.
Further, the inner peripheral surface of the inner wall portion 26c is in surface contact with a part of the outer peripheral surface 70a of the lower end portion of the discharge pipe 70.

Even in the discharge unit 100 having the above configuration, when the discharge container 200 is changed from the inverted state to the upright state, the contents 220 flowing through the discharge flow path 73 and the connection flow path 60 satisfactorily flow into the return port 32. , It 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 content 220 passes through the initial flow path 40, the connection flow path 60, and the discharge flow path 73 in this order to the discharge port. It is discharged from 72.

<Modified example of the second embodiment>
Next, a modified example of the second embodiment will be described with reference to FIG. 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 portion 25, and the end of the second tubular portion 21 on the discharge port 72 side is open toward the discharge port 72 side. The inner peripheral edge of the end of the second tubular portion 21 on the discharge port 72 side and the outer peripheral edge of the end of the enlarged diameter portion 36 on the discharge port 72 side define the initial discharge port 22. Therefore, the initial discharge port 22 is formed with an opening of 360 degrees in the circumferential direction.

More specifically, as shown in FIG. 9, the second tubular portion 21 is opened, for example, in the vertical direction. Further, the edge of the second tubular portion 21 on the discharge port 72 side is arranged at the same height as the edge of the diameter-expanded portion 36 on the discharge port 72 side.
The inner diameter of the enlarged diameter portion 36 is set to a dimension larger than the outer diameter of the discharge pipe 70, for example. Therefore, a gap is formed between the inner peripheral surface of the enlarged diameter portion 36 and the outer peripheral surface 70a of the lower end portion of the discharge pipe 70, and the content 220 inside the connection flow path 60 in the inverted state is the gap. It flows into the second inflow port 71 through the passage. That is, the outer peripheral edge of the end of the discharge pipe 70 on the container body 210 side and the portion of the inner peripheral surface of the enlarged diameter portion 36 facing the outer peripheral edge of the end of the discharge pipe 70 on the container body 210 side flow. It defines the entrance 66.
In the case of this modification, the inflow port 66 is opened 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 the squeeze operation is performed, the contents 220 flow into the initial flow path 40 from the first opening 21a, and the initial discharge port 22, the connection flow path 60, and the like. The inflow port 66, the boundary portion 65, the second inflow port 71, and the discharge flow path 73 flow in this order and are discharged from the discharge port 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 flow path 73 flow into the return flow path 33 from the return port 32 and are returned to the container body 210 from the second opening 31. Further, a part of the contents 220 inside the connection flow path 60 flows into the initial flow path 40 from the initial discharge port 22 and is returned to the container body 210 from the first opening 21a, and the rest of the contents 220 flows. It flows into the boundary portion 65 from the inlet 66, passes through the return flow path 33, and is returned to the container body 210 through the second opening 31. That is, it is possible to realize a structure in which the content 220 is returned to the container body 210 more smoothly.

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

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

Further, for example, in the above description, an example in which the surface of the connection flow path 60 on the container body 210 side rises stepwise toward the boundary portion 65 has been described, but the present invention is not limited to this example, for example. The surface of the connection flow path 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 configured by combining two members, the first member 10 and the second member 20, of each other. Not limited to this, the discharge unit 100 may be composed of one member (single member).

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

Moreover, the above-described embodiments can be combined within a range that does not conflict with each other.

10 1st member 11 1st tubular portion 12 1st closed portion 20 2nd member 21 2nd tubular portion 21a 1st opening 22 Initial discharge port 23 Rib 24 Through hole 25 2nd closed portion 30 Return pipe 31 2nd opening 32 Return port 33 Return flow path 35 Inner cylinder part 36 Diameter expansion part 36 First peripheral wall part 37 Second peripheral wall part 38 Third peripheral wall part 40 Initial flow path 60 Connection flow path 65 Boundary part 66 Inflow port 70 Discharge pipe 71 Second Inflow port 72 Discharge port 73 Discharge flow path 80 Upstream side flow path 100 Discharge unit 200 Discharge container 210 Container body 211 Body part 213 Bottom part 214 Mouth neck part 214a Fitted part 220 Contents

Claims (10)

A discharge unit that is attached to a discharge container having a container body for storing the contents and that causes the contents to flow and discharge inside.
A first opening and a second opening arranged at positions on the inflow side of the contents from the container body to the discharge unit, respectively.
An upstream flow path through which the contents flowing in from the first opening flow, and
A discharge flow path having a discharge port at the tip to flow and discharge the contents flowing from the upstream side flow path, and a discharge flow path.
The boundary between the upstream flow path and the discharge flow path and the second opening are communicated with each other, and the contents are returned to the container body from the discharge flow path or the upstream side flow path in an upright state. Return flow path and
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 is a discharge unit facing the container body side. The return flow path is arranged at a position to capture the contents falling by its own weight from the discharge flow path in the upright state.
The discharge unit according to claim 1, wherein the second opening is located at the end of the return flow path on the container body side and faces the container body side. The upstream flow path is
An initial flow path through which the contents flowing in from the first opening flow, and
A connecting flow path for flowing the contents from the initial flow path to the discharge flow path,
Including
The discharge unit according to claim 1 or 2, wherein the surface of the connection flow path on the container body side is lowered toward the boundary portion. A return pipe having the return flow path inside is provided.
The discharge unit according to claim 3, wherein the return pipe is housed inside the outer periphery of the initial flow path in a plan view. A discharge pipe having the discharge flow path inside is provided.
The discharge unit according to claim 4, wherein the discharge pipe and the return pipe are arranged so as to extend from each other and coaxially with each other. A discharge pipe having the discharge flow path inside is provided.
The discharge unit according to any one of claims 3 to 5, wherein the discharge pipe is housed inside the outer periphery of the connection flow path in a plan view. The discharge unit according to any one of claims 1 to 6, wherein the flow path area of the return flow path is smaller than the flow path area of the discharge flow path. A return pipe having the return flow path inside is provided.
The second opening is arranged at the end of the return pipe on the container body side.
The discharge unit according to any one of claims 1 to 7, wherein the second opening is arranged closer to the container body than the first opening. One of claims 1 to 8, wherein the inflow port of the contents from the discharge flow path or the upstream side flow path to the return flow path has a shape narrowed toward the container body side. Discharge unit described in. The container body that stores the contents and
A discharge unit that is attached to the container body and discharges the contents by flowing them inside.
With
The discharge unit is
A first opening and a second opening arranged at positions on the inflow side of the contents from the container body to the discharge unit, respectively.
An upstream flow path through which the contents flowing in from the first opening flow, and
A discharge flow path having a discharge port at the tip to flow and discharge the contents flowing from the upstream side flow path, and a discharge flow path.
The boundary between the upstream flow path and the discharge flow path and the second opening are communicated with each other, and the contents are returned to the container body from the discharge flow path or the upstream side flow path in an upright state. Return flow path and
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 is a discharge container facing the container body side.

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