JP2016088581A - Pouring plug - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pouring plug in which a filling liquid can be poured by a proper amount regardless of pressing time of a body part of a container when using the filling liquid, and the container can be kept in a sealed state without being operated by hands of a user after use.SOLUTION: A pouring plug 1 comprises: a discharge hole 28 communicating with a mouth part 2a of a container 2; a small-diameter pouring hole 17 communicating with the discharge hole 28; and a valve body 7 provided between the discharge hole 28 and the small-diameter pouring hole 17. A valve part 35 of the valve body 7 elastically moves between the discharge hole 28 and the small-diameter pouring hole 17 by internal pressure of the container 2, and can open and close the discharge hole 28 by being separated from or seated on an annular valve seat 30 in the periphery of the discharge hole 28. The valve part can also open and close the small-diameter pouring hole 17 by being separated from or seated on an annular valve seat 20 in the periphery of the small-diameter pouring hole 17. Thus, a filling liquid can be poured by a proper amount regardless of the pressing time of the container 2 during use, and the inside of the container 2 can be kept in a sealed state after use.SELECTED DRAWING: Figure 1

Description

  In particular, the present invention relates to a spout plug that is attached to a mouth portion of a container filled with a filling liquid such as eye drops (eye drops) and opens and closes by pressure in the container.

  In general, containers filled with a chemical solution such as eye drops often use a type in which a chemical solution is poured out by pressing the body of the container to apply an internal pressure to the container. In this type of container, when the dispensing of the chemical solution is finished and the pressed state on the body part is released, the body part of the container is elastically restored and returns to its original shape. In order to enter the inside of the container, there has been a problem that foreign substances and bacteria existing in the air are mixed into the chemical solution. In order to solve this problem, there is a demand for a device that quickly seals the inside of a container without being operated by a user after releasing the pressing state on the trunk.

  As a prior art of the spout which can seal the inside of a container without a user operating after using a filling liquid, patent document 1 is mentioned, for example. In Patent Document 1, a cap main body fitted to a container mouth portion includes a discharge passage communicating with the container mouth portion, a base portion fitted in the discharge passage and having a discharge hole, and the base And a check valve that allows only the discharge of the contents from the discharge hole, and the check valve is fitted into the discharge passage, A plurality of elastically deformable elastic pieces extending radially toward the center so as to form a gap from the inner wall surface, and integrally connected to the tip of each elastic piece, on the downstream side in the discharge direction of the discharge hole, It consists of a valve member that opens and closes the discharge hole, and when the internal pressure on the container is released, each elastic piece of the check valve is restored so that the valve member closes the discharge hole and keeps the inside of the container sealed Is disclosed.

JP 2013-241197 A

  However, in the invention of Patent Document 1, after the contents are discharged, the check valve is actuated so that the inside of the container can be quickly maintained in a sealed state. If it continues, the contents in the container will be discharged continuously.For example, when the container is filled with a chemical such as eye drops, an appropriate amount of the chemical is applied by pressing the barrel of the container at the time of use. It cannot be dripped, and the invention of Patent Document 1 cannot be adopted.

  The present invention has been made in view of such points, and when the filling liquid is used, an appropriate amount of the filling liquid can be dispensed regardless of the pressing time against the body of the container. An object of the present invention is to provide a pouring tap capable of maintaining the inside of a container in a sealed state without being operated by hand.

The present invention provides, as a means for solving the above-mentioned problems, an invention described in claim 1, which is a synthetic resin pouring stopper attached to a mouth portion of a container filled with a filling liquid. The outlet includes a discharge hole communicating with the mouth of the container, a pouring hole communicating with the discharge hole, and a valve body provided between the discharge hole and the pouring hole, The valve body is normally urged in a direction to close the discharge hole, and includes a valve portion that can be elastically moved between the discharge hole and the extraction hole by an internal pressure of the container. The discharge hole can be opened and closed by separating or seating from the annular valve seat provided around the discharge hole, and the discharge hole can be opened and closed by separating or seating from the annular valve seat provided around the discharge hole. It is characterized by comprising.
According to a second aspect of the present invention, in the first aspect of the invention, the valve portion is detached from the annular valve seat around the discharge hole due to the internal pressure of the container, and then seated on the annular valve seat around the outlet hole. It is characterized by doing.
According to the first and second aspects of the present invention, in a normal state, the sealed state in the container is maintained with the valve portion of the valve body seated on the annular valve seat around the discharge hole and the discharge hole being closed. When the filling liquid is used, if the internal pressure is applied to the container by pressing the body part of the container, the internal pressure of the container acts on the valve part, so that the valve part is detached from the annular valve seat around the discharge hole. Move toward the dispensing hole. Thereafter, when the valve portion of the valve body is seated on the annular valve seat around the outlet hole, the outlet hole is closed. And, at the moment when the valve part moves from the discharge hole to the discharge hole side, the discharge hole and the discharge hole are opened, and at that moment, an appropriate amount of filling liquid is released from the mouth of the container. It is poured out (dropped) to the outside through the discharge hole and the pouring hole. At this time, even if the body portion of the container is continuously pressed, the filling liquid in the container is not poured out to the outside because the pouring hole is kept closed by the valve portion of the valve body. After that, when dispensing of the filling liquid is finished and the pressure state on the container body is released, the internal pressure on the container is released, so the valve part of the valve body moves from the dispensing hole to the discharge hole side. The seat is seated on the annular valve seat around the discharge hole, the discharge hole is closed by the valve portion, and the sealed state in the container is maintained.

  Thus, during use, a substantially constant amount of filling liquid can be poured out (dropped) regardless of the time during which the body of the container is pressed, and the user can operate it manually after use. Therefore, the inside of the container can be maintained in a sealed state, and entry of external air into the container can be suppressed.

  In addition, when the filling liquid in the container is a liquid medicine such as an eye drop, an appropriate amount of the eye drop can be dripped at the time of use, and the inside of the container can be maintained in a sealed state without any user operation after use. It is possible to suppress the entry of outside air into the container, and it is hygienic.

  According to the pouring tap of the present invention, when the filling liquid is used, an appropriate amount of the filling liquid can be poured out (dropped) regardless of the time during which the body portion of the container is pressed. The inside of the container can be maintained in a sealed state without operation. Thereby, the pouring tap of the present invention is particularly effective as a pouring tap for dropping an appropriate amount of the filling liquid filled in the container, particularly an eye drop.

FIG. 1 is a cross-sectional view showing a state in which a spout according to an embodiment of the present invention is attached to the mouth of a container. FIG. 2 is a cross-sectional view of the pouring nozzle that is the configuration of the pouring tap. FIG. 3 is a cross-sectional view of the discharge main body which is the configuration of the pouring tap. FIG. 4 is a cross-sectional view of a valve body that is the configuration of the pouring tap. FIG. 5 is a perspective view of a valve element that is a configuration of the pouring tap. FIG. 6 shows the state in which the filling liquid in the container is poured out through the pouring tap. FIG. 7: is principal part sectional drawing of the extraction tap which concerns on other embodiment, (a) shows the state which the valve part of the valve body obstruct | occluded the discharge hole, (b) shows the valve part of the valve body. The state which closed the pouring hole is shown. FIG. 8: is principal part sectional drawing of the extraction tap which concerns on other embodiment, (a) shows the state which the valve part of the valve body closed the discharge hole, (b) is the valve part of the valve body Shows a state where the pouring hole is closed.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to FIGS.
As shown in FIG. 1, a spout 1 according to an embodiment of the present invention is fitted into a mouth 2a of a container 2, and a spout nozzle 5 that spouts (drops) a filling liquid to the outside. A discharge body 6 disposed in the cylindrical fitting wall 10 of the dispensing nozzle 5; and a valve body 7 disposed above the discharge body 6 in the cylindrical fitting wall 10 of the dispensing nozzle 5. Consists of

  The pouring spout 1 is constructed by assembling these three constituent members, that is, the pouring nozzle 5, the discharge main body 6, and the valve body 7. The pouring tap 1 is made of a synthetic resin. The synthetic resin for molding the valve body 7 has higher elasticity than the synthetic resin for molding the dispensing nozzle 5 and the discharge body 6. Specifically, the valve body 7 is formed of polyethylene resin (PE). The dispensing nozzle 5 and the discharge body 6 are formed of polypropylene resin (PP).

  As shown in FIG. 1, the container 2 is filled with a filling liquid such as eye drops. The container 2 is of a type in which the filling liquid is poured out (dropped) by applying an internal pressure, for example, by pressing its barrel. The mouth 2a of the container 2 is formed in a cylindrical shape. The container 2 may be composed of a double container (including a so-called peeling container) including an outer container and an inner container. The outer wall surface of the inner container is integrally connected to the inner wall surface in the vicinity of the mouth of the outer container, and the inner container is filled with the filling liquid and deformed as the filling liquid decreases. It has flexibility. In order to maintain the volume-reducing shape of the inner container, it is configured so that outside air is sucked between the outer container and the inner container. The spout 1 is attached to the mouth of the outer container.

  As shown in FIGS. 1 and 2, the dispensing nozzle 5 is formed with a cylindrical fitting wall portion 10 that is fitted into the mouth portion 2 a of the container 2. An annular horizontal wall 11 is integrally connected to the upper end of the cylindrical fitting wall 10. An annular flange 12 projects integrally from the outer periphery of the annular horizontal wall 11 toward the outside. The lower surface of the annular flange 12 abuts on the upper end surface of the mouth 2a of the container 2. A nozzle portion 13 extends upward in the radial center of the annular horizontal wall portion 11. The cylindrical fitting wall part 10 and the nozzle part 13 are located concentrically.

  In the nozzle portion 13, a small-diameter extraction hole 17 positioned below and a large-diameter extraction hole 18 continuous upward from the small-diameter extraction hole 17 are formed concentrically. The large-diameter extraction hole 18 is formed to have a much longer vertical length (height) than the small-diameter extraction hole 17. On the lower surface of the annular horizontal wall portion 11, the periphery of the small-diameter extraction hole 17 acts as an annular valve seat 20. The outer wall surface of the nozzle portion 13 is formed on a tapered surface 19 that tapers toward the tip.

  On the inner wall surface of the cylindrical fitting wall portion 10, a first locking ridge portion 21 projecting inwardly at a substantially central portion in the vertical direction extends in the circumferential direction. On the inner wall surface of the cylindrical fitting wall portion 10, there is a second locking ridge portion 22 that protrudes inward from the first locking ridge portion 21 toward the annular horizontal wall portion 11 side. It extends in the circumferential direction. In addition, a first engagement recess 23 is formed between the first locking protrusion 21 and the second locking protrusion 22 on the inner wall surface of the cylindrical fitting wall 10. A second engagement recess 24 is formed on the inner wall surface of the cylindrical fitting wall 10 between the second locking protrusion 22 and the lower surface of the annular horizontal wall 11.

  As shown in FIGS. 1 and 3, the discharge body 6 is formed in a cylindrical shape. A discharge hole 28 is formed in the central portion in the radial direction of the discharge main body 6. The inner wall surface of the discharge hole 28 is formed as an inverted conical surface 29. The discharge body 6 is configured such that the central portion in the radial direction including the discharge hole 28 is slightly raised upward. The inverted conical surface 29 of the discharge hole 28 acts as an annular valve seat 30. On the lower surface of the discharge main body 6, a guide recess 31 for guiding the filling liquid toward the discharge hole 28 is formed at a central portion in the radial direction. The guide recess 31 and the discharge hole 28 communicate with each other.

  As shown in FIGS. 1, 4, and 5, the valve body 7 includes a valve portion 35 located at the radial center portion, elastic pieces 36 extending radially from the outer peripheral portion of the valve portion 35, and the respective elasticities. An annular support portion 37 that is integrally connected to the end portion of the piece 36 and fits into the second engagement recess 24 provided on the inner wall surface of the cylindrical fitting wall portion 10 of the dispensing nozzle 5, and each elastic piece 36. And a plurality of flow holes 38 through which the filling liquid flows.

  The valve portion 35 includes an inverted truncated conical portion 40 and a columnar portion 41 integrally extending from the upper surface of the inverted truncated cone-shaped portion 40 with a smaller diameter than the inverted truncated cone-shaped portion 40. The The outer peripheral surface (inverted conical surface) of the inverted truncated conical portion 40 is seated on the annular valve seat 30 (inverted conical surface) around the discharge hole 28 of the discharge main body 6. The valve part 35 and the annular support part 37 are located concentrically. The outer diameter of the upper end surface of the cylindrical portion 41 is formed larger than the inner diameter of the small-diameter extraction hole 17 of the nozzle portion 13 that is the configuration of the extraction nozzle 5.

  Each of the elastic pieces 36 has a rectangular cross section, the same thickness and the same width, and extends slightly obliquely upward from the outer peripheral portion of the valve portion 35. All the elastic pieces 36 have the same width. The thickness dimension of each elastic piece 36 is also the same. The end portions of the elastic pieces 36 are integrally connected to the inner wall surface of the annular support portion 37. In the present embodiment, the elastic pieces 36 are formed at four positions with a 90 ° pitch in the circumferential direction. Four through holes 38 are formed at 90 ° pitches between the elastic pieces 36. The annular support portion 37 is formed so as to be thin so that the outer peripheral edge thereof is easily bent, and an outer peripheral portion extending in an annular shape is provided on the inner wall surface of the cylindrical fitting wall portion 10 of the dispensing nozzle 5. It is configured to be curved downward along the line.

And when assembling this pouring tap 1, first, the valve body 7 is inserted into the cylindrical fitting wall 10 of the pouring nozzle 5 from the columnar portion 41 side of the valve portion 35, and the valve body is inserted. The seven annular support portions 37 are fitted into the second engagement recesses 24 provided on the inner wall surface of the cylindrical fitting wall portion 10.
Subsequently, the discharge main body 6 is inserted into the cylindrical fitting wall portion 10 of the dispensing nozzle 5, and the discharge main body 6 is arranged with the annular seating surface 30 around the discharge hole 28 as an inverted frustoconical shape of the valve body 7. Pushing upward while abutting on the outer peripheral surface of the portion 40, the outer peripheral portion of the discharge main body 6 is fitted into the first engaging recess 23 provided on the inner wall surface of the cylindrical fitting wall portion 10.

  As a result, since the lower end of the valve portion 35 (inverted truncated conical portion 40) of the valve body 7 is positioned higher than the position before assembly, the downward biasing force of each elastic piece 36 of the valve body 7 ( (Restoring force), the outer peripheral surface of the inverted truncated conical portion 40 provided in the valve portion 35 of the valve body 7 is brought into close contact with the annular valve seat 30 (inverted conical surface 29) around the discharge hole 28 of the discharge body 6. It comes to press. In addition, the lower wall surface of the valve portion 35 of the valve body 7 (the lower wall surface of the inverted truncated conical portion 40) and the bottom surface of the guide recess 31 of the discharge main body 6 are flush with each other. The entire wall surface (the entire lower wall surface of the inverted truncated conical portion 40) comes to face the mouth 2a of the container 2. And the assembly of the pouring tap 1 is completed.

  Thereafter, when the spout 1 is attached to the mouth 2 a of the container 2, the cylindrical fitting wall 10 of the spout nozzle 5 of the spout 1 is fitted into the mouth 2 a of the container 2. Plug it to make it happen. In this embodiment, the present spout 1 is attached to the mouth 2a of the container 2 by a stoppering method, but the present spout 1 is attached to the mouth 2a of the container 2 by a screwing method. May be adopted.

Next, the effect | action of the pouring tap 1 which concerns on embodiment of this invention is demonstrated based on FIG.
When using the filling liquid, first, in a state where the entire container 2 is tilted so that the pouring nozzle 5 of the pouring tap 1 is directed toward the pouring target, the trunk portion of the container 2 is Press to apply internal pressure to the container 2. Then, as shown in FIG. 6A, the inner pressure of the container 2 acts on the entire lower wall surface of the inverted truncated conical portion 40 of the valve portion 35 of the valve body 7, whereby each elastic piece 36 of the valve body 7. The outer peripheral surface of the inverted truncated cone-shaped portion 40 of the valve portion 35 of the valve body 7 is bent from the annular valve seat 30 (inverted conical surface 29) around the discharge hole 28 of the discharge body 6. Will be withdrawn.

  Thereafter, as shown in FIG. 6B, the valve body 7 moves toward the small-diameter dispensing hole 17 side of the dispensing nozzle 5 so as to resist the urging force of each elastic piece 36 due to the internal pressure of the container 2. At the same time, each elastic piece 36 is further bent, and the outer peripheral edge portion of the annular support portion 37 is further curved along the second engagement recess 24 provided on the inner wall surface of the cylindrical fitting wall portion 10. When the upper end surface of the cylindrical part 41 provided in the valve part 35 of the 7 is seated on the annular valve seat 20 around the small-diameter extraction hole 17, the small-diameter extraction hole 17 of the extraction nozzle 5 is closed. At this time, as shown in FIG. 6A, the valve portion 35 of the valve body 7 moves from the discharge hole 28 of the discharge body 6 toward the small-diameter discharge hole 17 of the discharge nozzle 5 due to the internal pressure of the container 2. Since the discharge hole 28 of the discharge body 6 and the small-diameter discharge hole 17 of the discharge nozzle 5 are both open at the moment, an appropriate amount of filling liquid is released from the mouth 2a of the container 2 only at that moment. 6 is discharged (dropped) to the outside through the discharge holes 28, the flow holes 38 of the valve body 7 (see FIG. 5), the small-diameter extraction holes 17 and the large-diameter extraction holes 18 of the extraction nozzle 5. .

That is, due to the internal pressure of the container 2, the outer peripheral surface of the inverted truncated conical portion 40 of the valve portion 35 of the valve body 7 is detached from the annular valve seat 30 (inverted conical surface 29) around the discharge hole 28 of the discharge body 6. Until the upper end surface of the cylindrical portion 41 of the valve portion 35 of the valve body 7 is seated on the annular valve seat 20 around the small diameter outlet hole 17. At this moment, the filling liquid gathers from the mouth 2a of the container 2 to the discharge hole 28 along the bottom surface of the guide recess 31 of the discharge main body 6, and from the discharge hole 28 to each flow hole 38 of the valve body 7 (see FIG. 5). Then, an appropriate amount is poured out (dropped) from the small-diameter dispensing hole 17 and the large-diameter dispensing hole 18 of the dispensing nozzle 5. Thereafter, even if the body portion of the container 2 is continuously pressed, the upper end surface of the cylindrical portion 41 of the valve portion 35 of the valve body 7 is seated on the annular valve seat 20 around the small-diameter extraction hole 17 of the extraction nozzle 5. Thus, the state in which the small-diameter pouring hole 17 is closed is maintained, so that the filling liquid is not poured out (dropped) to the outside.
As described above, when the filling liquid is used, when an inner pressure is applied to the container 2 by pressing the body portion of the container 2, an appropriate amount of the filling liquid is poured out (dropped) without being excessively poured out. be able to.

  Thereafter, when the pressing operation to the body portion of the container 2 is stopped after an appropriate amount of filling liquid is poured out, the internal pressure on the container 2 is released as shown in FIG. The elastic piece 36 and the annular support portion 37 are restored, and the valve portion 35 of the valve body 7 moves to the discharge body 6 side, and the outer peripheral surface of the inverted truncated conical portion 40 of the valve portion 35 of the valve body 7 is the discharge body. 6 is seated on the annular valve seat 30 (inverted conical surface 29) around the discharge hole 28. And the discharge hole 28 of the discharge main body 6 is obstruct | occluded by the valve part 35 of the valve body 7, and the inside of the container 2 can be maintained in a sealed state. Thus, immediately after use, the inside of the container 2 can be quickly sealed without the user operating it by hand, and the inflow of external air into the container 2 can be suppressed.

  As described above, the spout 1 according to the embodiment of the present invention is configured by assembling the valve body 7 and the discharge body 6 to the spout nozzle 5. The discharge main body 6 includes a discharge hole 28 communicating with the mouth portion 2a of the container 2 and an annular valve seat 30 provided around the discharge hole 28. The dispensing nozzle 5 includes a small-diameter dispensing hole 17 and a large-diameter dispensing hole 18 that communicate with the ejection hole 28 of the ejection body 6, and an annular valve seat 20 provided around the small-diameter dispensing hole 17. . Further, the valve body 7 is provided between the discharge hole 28 of the discharge main body 6 and the small-diameter discharge hole 17 of the discharge nozzle 5, and is normally urged in a direction to close the discharge hole 28, so that the container 2 Is provided with a valve portion 35 that can move elastically between the discharge hole 28 of the discharge main body 6 and the small-diameter discharge hole 17 of the discharge nozzle 5. The valve portion 35 can be separated from or seated on the annular valve seat 30 around the discharge hole 28 of the discharge main body 6 to open and close the discharge hole 28, and the annular valve around the small-diameter discharge hole 17 of the discharge nozzle 5. The small-diameter extraction hole 17 is configured to be openable and closable by being separated from or seated on the seat 20.

  As a result, when the filling liquid is used, when the body portion of the container 2 is pressed to apply internal pressure to the container 2, each elastic piece 36 and the annular support portion 37 of the valve body 7 are elastically deformed, and the valve of the valve body 7. The outer peripheral surface of the inverted truncated conical portion 40 of the portion 35 is detached from the annular valve seat 30 (inverted conical surface) around the discharge hole 28 of the discharge main body 6. Thereafter, when the upper end surface of the cylindrical portion 41 of the valve portion 35 of the valve body 7 is seated on the annular valve seat 20 around the small-diameter extraction hole 17, the small-diameter extraction hole 17 is closed. At this time, at the moment when the valve portion 35 moves from the discharge hole 28 of the discharge body 6 toward the small-diameter discharge hole 17 of the discharge nozzle 5, an appropriate amount of filling liquid is discharged from the mouth portion 2 a of the container 2. It is poured out (dropped) to the outside through the hole 28, each flow hole 38 of the valve body 7, the small diameter pouring hole 17 and the large diameter pouring hole 18 of the pouring nozzle 5. After that, when the filling liquid is completely dispensed and the pressure on the body portion of the container 2 is stopped, the internal pressure on the container 2 is released, so that each elastic piece 36 and the annular support portion 37 of the valve body 7 are restored. As a result, the outer peripheral surface of the inverted frustoconical portion 40 of the valve portion 35 of the valve body 7 is seated on the annular valve seat 30 (inverted conical surface) around the discharge hole 28 of the discharge body 6. The discharge hole 28 of the discharge main body 6 is closed, and the inside of the container 2 can be maintained in a sealed state.

  Thus, in the spout 1 according to the embodiment of the present invention, a substantially constant amount of the filling liquid can be poured out (dropped) to the outside regardless of the time during which the body portion of the container 2 is pressed. Moreover, since the inside of the container 2 can be quickly sealed when the filling liquid is completely dispensed and the pressing operation to the body portion of the container 2 is stopped, the dispensing stopper for dropping a liquid medicine such as an eye drop as the filling liquid 1 is particularly effective. Moreover, it is effective also as the spout 1 which drops a suitable quantity of seasonings, such as soy sauce, vinegar, and chili oil, as a filling liquid.

  As shown in FIG. 7, as a spout 1 a according to another embodiment, an annular protrusion is formed around the small-diameter pouring hole 17 of the pouring nozzle 5 on the lower surface of the annular horizontal wall portion 11 of the pouring nozzle 5. The portion 50 is formed so that the annular valve seat 20 a is provided around the annular protrusion 50. The outer wall surface of the annular protrusion 50 is formed so as to be slightly reduced in diameter downward. In the case of this embodiment, an annular contact portion 51 protrudes upward from the outer periphery of the columnar portion 41 provided on the valve portion 35 of the valve body 7. The inner wall surface of the annular contact portion 51 is formed so as to be slightly enlarged in diameter upward. The minimum inner diameter of the annular contact portion 51 of the valve body 7 is formed slightly larger than the maximum outer diameter of the annular protrusion 50 of the dispensing nozzle 5.

  And when the valve part 35 of the valve body 7 moves from the discharge hole 28 of the discharge main body 6 to the small-diameter extraction hole 17 side by the internal pressure of the container 2, the cylindrical part of the valve part 35 of the valve body 7. An annular contact portion 51 provided on 41 moves along the outer wall surface of the annular protrusion 50 of the dispensing nozzle 5. Thereafter, the upper end surface of the annular contact portion 51 of the valve body 7 is seated on the annular valve seat 20a around the annular projection 50 of the extraction nozzle 5, so that the small-diameter extraction hole 17 of the extraction nozzle 5 becomes the valve body. 7 valve part 35 is closed. Thus, in this embodiment, when the upper end surface of the annular contact portion 51 of the valve portion 35 of the valve body 7 is seated on the annular valve seat 20a around the annular protrusion 50 of the dispensing nozzle 5, the valve portion Since the annular contact portion 51 of 35 is seated along the outer wall surface of the annular protrusion 50 of the dispensing nozzle 5, the moving direction of the valve portion 35 of the valve body 7 can be made substantially constant, and its posture is also stable. Can be made.

  Further, as shown in FIG. 8, as a spout 1b according to still another embodiment, a ring is formed around the small diameter spout hole 17 of the spout nozzle 5 on the lower surface of the annular horizontal wall portion 11 of the spout nozzle 5. The protrusion 50 is formed, and the annular valve seat 20 b is provided inside the annular protrusion 50. The inner wall surface of the annular projecting portion 50 is formed so as to slightly increase in diameter downward. In the case of this embodiment, the outer diameter of the annular valve seat 20b inside the annular protrusion 50 is formed slightly larger than the outer diameter of the upper end surface of the columnar portion 41 provided in the valve portion 35 of the valve body 7. .

  And when the valve part 35 of the valve body 7 moves from the discharge hole 28 of the discharge main body 6 to the small-diameter extraction hole 17 side by the internal pressure of the container 2, the cylindrical part of the valve part 35 of the valve body 7. The outer wall surface of 41 moves along the inner wall surface of the annular protrusion 50 of the dispensing nozzle 5. Thereafter, the upper end surface of the columnar portion 41 of the valve body 7 is seated on the annular valve seat 20b inside the annular protrusion 50 of the dispensing nozzle 5, so that the small-diameter dispensing hole 17 of the dispensing nozzle 5 becomes the valve. It is closed by the valve part 35 of the body 7. Thus, in this embodiment, when the upper end surface of the columnar portion 41 of the valve portion 35 of the valve body 7 is seated on the annular valve seat 20b inside the annular protrusion 50 of the dispensing nozzle 5, the valve Since the cylindrical part 41 of the part 35 is seated along the inner wall surface of the annular protrusion 50 of the dispensing nozzle 5, the movement direction of the valve part 35 of the valve body 7 can be made substantially constant, and its posture is also It can be stabilized.

  Further, in the embodiment of the present invention, a cap body that hermetically closes the small-diameter pouring hole 17 and the large-diameter pouring hole 18 of the pouring taps 1, 1a, and 1b is not adopted. You may provide the cap body which covers the stopper 1, 1a, 1b. Specifically, the cap body may be connected to the outlet plugs 1, 1a, 1b via hinges, and the cap body may be covered with the outlet stoppers 1, 1a, 1b by folding the hinges. The cap body may be attached by a screwing method so as to cover the spouts 1, 1a, 1b. By adopting the cap body, the valve portion 35 of the valve body 7 is seated in the discharge hole 28 in the cylindrical fitting wall portion 10 from the upper end of the large-diameter extraction hole 18 of the nozzle portion 13 of the extraction nozzle 5. The space reaching the upper surface of the discharge main body 6 in the state can be sealed, and the inside of the container 2 can be sealed twice.

  1, 1a, 1b Discharge tap, 2 container, 2a mouth, 5 discharge nozzle, 6 discharge body, 7 valve body, 17 small diameter discharge hole, 18 large diameter discharge hole, 20 annular valve seat (small diameter discharge) Around the hole), 28 discharge hole, 30 annular valve seat (around the discharge hole), 35 valve section

Claims (2)

A synthetic resin pouring stopper attached to the mouth of a container filled with a filling liquid,
The spout is
A discharge hole communicating with the mouth of the container;
A pouring hole communicating with the discharge hole;
A valve body provided between the discharge hole and the dispensing hole,
The valve body is normally biased in a direction to close the discharge hole, and includes a valve portion that can move elastically between the discharge hole and the discharge hole by an internal pressure of a container,
The valve part can be separated from or seated on an annular valve seat provided around the discharge hole to open and close the discharge hole, and can be detached from or seated on an annular valve seat provided around the discharge hole. A pouring tap characterized by being configured to open and close the hole.   The pouring tap according to claim 1, wherein the valve portion is separated from the annular valve seat around the discharge hole by an internal pressure of the container and then seated on the annular valve seat around the pouring hole.

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