JP6491930B2 - Pouring cap - Google Patents

Description

  The present invention relates to a dispensing cap.

  A flexible inner container that accommodates contents and shrinks and deforms as the contents decrease, and an outer container that has an inner container and is elastically deformable. Conventionally, for example, a configuration shown in Patent Document 1 below is known as an output cap. The pouring cap includes a cap body having a top wall portion that covers the opening of the mouth portion of the container main body, and a pouring hole for pouring the contents into the top wall portion. A communication tube that communicates the pouring hole and the inside of the container main body extends downward from the top wall portion. In the communication cylinder, there is a valve body arranged so as to be movable up and down, a valve seat in which the valve body is detachably seated upward, and the communication between the communication cylinder and the container body is blocked. A restricting portion for restricting the upward movement of the valve body is provided in a state where the inside of the cylinder and the extraction hole are in communication with each other.

JP 2013-180775 A

  However, in the conventional pouring cap, the valve body may be in close contact with the valve seat depending on the contents before the next pouring.

  The present invention has been made in view of the above-described circumstances, and suppresses the valve body from being in close contact with the valve seat portion until the next dispensing, and also when the valve body is seated on the valve seat portion. The purpose is to regulate the inhalation of air into the container body.

In order to solve the above problems, the present invention proposes the following means.
The pouring cap according to the present invention comprises: a flexible inner container that accommodates the contents and is deformed by squeezing as the contents are reduced; and an outer container that is internally deformed and elastically deformed. A pouring cap attached to the mouth portion of the container body having a top wall portion covering the opening of the mouth portion of the container body, and forming a pouring hole for pouring contents into the top wall portion. The top wall is provided with a communicating tube that communicates with the pouring hole and the inside of the container body. The communicating tube extends downward, and is arranged in the communicating tube so as to be movable up and down. A provided valve body, a valve seat in which the valve body is releasably seated upward, and blocks communication between the communication cylinder and the container body, and the communication cylinder and the extraction hole. And a restricting portion for restricting the upward movement of the valve body in a state where the valve body is in communication with the surface of the valve body and the Between the seat surface, in a state where the valve body is seated on the valve seat portion disposed adjacent to the circumferential direction to the portion where the valve body and said valve seat are in contact, the contents A holding gap for holding is provided.

In this case, since the holding gap is provided between the surface of the valve body and the surface of the valve seat portion, the valve body and the valve seat portion are connected to each other in the communicating cylinder in a state where the valve body is seated on the valve seat portion. It is possible to suppress contact over the entire circumference in the circumferential direction. As a result, even if the contents solidify between the surface of the valve body and the surface of the valve seat portion, the degree of adhesion between the valve body and the valve seat portion is weakened, and the valve body is attached to the valve seat portion. Adhesion can be suppressed. Therefore, at the time of the next extraction, for example, when the container body is tilted or squeezed and deformed, the valve body can be easily separated from the valve seat portion.
In addition, since the holding gap holds the contents, the contents can be held in the holding gap when the valve body separated from the valve seat portion is seated on the valve seat portion again. Therefore, even if a holding gap is provided between the surface of the valve body and the surface of the valve seat portion like this pouring cap, air is restricted from being sucked into the container body from the outside through the holding gap. be able to.

  The holding gap may be defined by a concave portion or a convex portion provided on at least one of the surface of the valve body and the surface of the valve seat portion.

  In this case, since the holding gap is defined by the concave portion or the convex portion, it is possible to adjust the shape and size of the holding gap by adjusting the shape and size of the concave portion or the convex portion, The holding gap can be easily and accurately formed.

  The valve body may be formed in a true spherical shape, and the valve seat portion may be formed in an elliptical ring shape that allows the inside of the communicating cylinder and the inside of the container body to communicate through the inside.

  In this case, since the valve body is formed in a spherical shape and the valve seat portion is formed in an elliptical ring shape, the valve body is seated on the valve seat portion, for example, on both sides in the longitudinal direction of the valve seat portion. It is possible to form a holding gap and the like, and the holding gap can be easily and accurately formed.

  According to the present invention, it is possible to prevent the valve body from coming into close contact with the valve seat portion until the next time it is dispensed, and to restrict air from being sucked into the container body when the valve body is seated on the valve seat portion. can do.

It is a longitudinal section showing the extraction cap of a 1st embodiment concerning the present invention. It is a longitudinal cross-sectional view of the principal part containing the valve body and valve seat part which comprise the extraction | pouring cap shown in FIG. It is a top view of the principal part containing the valve seat part which comprises the extraction | pouring cap shown in FIG. It is a perspective view of the principal part containing the valve seat part which comprises the extraction | pouring cap shown in FIG. It is a longitudinal cross-sectional view of the principal part containing the valve body and valve seat part which comprise the extraction | pouring cap of 2nd Embodiment which concerns on this invention. It is a top view of the principal part containing the valve seat part which comprises the extraction | pouring cap shown in FIG. It is a longitudinal cross-sectional view of the principal part containing the valve body and valve seat part which comprise the extraction | pouring cap of 3rd Embodiment which concerns on this invention. It is a top view of the principal part containing the valve seat part which comprises the extraction | pouring cap shown in FIG. It is a longitudinal cross-sectional view of the principal part containing the valve body and valve seat part which comprise the extraction | pouring cap of 4th Embodiment which concerns on this invention. It is a top view of the principal part containing the valve seat part which comprises the extraction | pouring cap shown in FIG. It is a longitudinal cross-sectional view of the principal part containing the valve body and valve seat part which comprise the extraction | pouring cap of 5th Embodiment which concerns on this invention. It is a top view of the principal part containing the valve seat part which comprises the extraction | pouring cap shown in FIG. It is a longitudinal cross-sectional view of the principal part containing the valve body and valve seat part which comprise the extraction | pouring cap of 6th Embodiment which concerns on this invention. It is a top view of the principal part containing the valve seat part which comprises the extraction | pouring cap shown in FIG. It is a longitudinal cross-sectional view of the principal part containing the valve body and valve seat part which comprise the extraction | pouring cap of 7th Embodiment which concerns on this invention. It is a longitudinal cross-sectional view of the principal part containing the valve body and valve seat part which comprise the extraction | pouring cap of 8th Embodiment which concerns on this invention. It is a longitudinal cross-sectional view of the principal part containing the valve body and valve seat part which comprise the extraction cap of 9th Embodiment which concerns on this invention. It is a longitudinal cross-sectional view of the principal part containing the valve body and valve seat part which comprise the extraction | pouring cap of 10th Embodiment which concerns on this invention. It is a longitudinal cross-sectional view of the principal part containing the valve body and valve seat part which comprise the extraction | pouring cap of 11th Embodiment which concerns on this invention. It is a top view of the principal part containing the valve seat part which comprises the extraction | pouring cap shown in FIG.

(First embodiment)
Hereinafter, a first embodiment of a dispensing cap according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the pouring cap 1 of this embodiment is attached to the mouth part 101 of the container main body 100 in which the liquid content (content liquid) is accommodated, and the content pouring hole 4 is formed. The cap-shaped cap body 2 having a top and a cap-shaped cylindrical cap body 3 that opens and closes the top wall portion 11 of the cap body 2 are provided. Examples of the contents include edible oil and liquid seasonings (for example, soy sauce, tonkatsu sauce, syrup).

  The cap main body 2 and the lid body 3 are arranged in a state where their central axes are located on a common axis. In the present embodiment, this common axis is called a cap axis O1, and a direction along the cap axis O1 is called a vertical direction. The cap body 2 side is referred to as the upper side along the vertical direction, and the container body 100 side, which is the opposite side, is referred to as the lower side.

  The container body 100 includes a flexible inner container 100a that accommodates contents and shrinks and deforms as the contents decrease, and an outer container 100b that includes the inner container 100a and is elastically deformable. .

The container body 100 is formed, for example, by blow molding, and is a delamination bottle (laminated peelable container) in which the inner container 100a is detachably laminated on the inner surface of the outer container 100b.
As the blow molding, for example, the container body 100 may be formed by forming a double (internal and external) laminated parison by extrusion molding or the like, and direct blow molding the laminated parison. In addition, a preform for the outer container 100b and a preform for the inner container 100a are formed by injection molding or the like, and after these are combined in a double (inner and outer), the container body 100 is formed by biaxial stretch blow molding. It may be formed.
Furthermore, after the preform for the outer container 100b is biaxially stretched blow-molded first to form the outer container 100b, the preform for the inner container 100a is placed inside, and then the preform for the inner container 100a is placed. The container body 100 may be formed by biaxial stretch blow molding.

  The material of the inner container 100a and the outer container 100b is a resin material, and may be the same material or different materials as long as they are detachable combinations. For example, the inner container 100a and the outer container 100b are made of a polyester resin such as polyethylene terephthalate resin or polyethylene naphthalate resin, a polyolefin resin such as polyethylene resin or polypropylene resin, a polyamide resin such as nylon, an ethylene vinyl alcohol copolymer resin, or the like. Used, the outer container 100b and the inner container 100a are formed in a combination that can be peeled (not compatible).

  The container main body 100 is formed in the bottomed cylinder shape by which the shoulder part, the trunk | drum, and the bottom part which are not shown in figure were continuously arranged in the mouth part 101 from the upper side. Of the outer container 100b, at least a portion located in the body is elastically deformable (squeezed deformable) toward the inside of the container. The inner container 100a undergoes volumetric deformation with the squeeze deformation of the outer container 100b. A suction slit portion (not shown) for sucking outside air is formed between the bottom portion of the outer container 100b and the inner container 100a. The intake slit portion is formed by a pinch-off portion of a mold, for example.

  The mouth portion 101 has a configuration in which the mouth portion 101a of the inner container 100a and the mouth portion 101b of the outer container 100b are stacked. An annular folded portion protruding outward in the radial direction is formed at the upper end portion of the mouth portion 101a of the inner container 100a. The folded end portion is used to close the opening end of the mouth portion 101b of the outer container 100b from above. Yes. Therefore, the mouth part 101b of the outer container 100b is closed by the inner container 100a.

  The lid 3 is connected to the cap body 2 via the hinge part 5, and opens and closes the pouring hole 4 by rotating up and down around the hinge part 5 with respect to the cap body 2. In the present embodiment, in a plan view when the dispensing cap 1 is viewed from the up and down direction, the direction along the imaginary line passing through the cap axis O1 and the hinge part 5 is referred to as the front-rear direction, and the hinge part 5 side along the front-rear direction is defined. The rear side and the opposite side are called the front side.

  The cap main body 2 is formed in a cylindrical shape with a peripheral wall portion 10 and a top wall portion 11, and is fitted to the mouth portion 101 of the container main body 100 from the outside by, for example, a stopper. Note that the cap body 2 may be non-rotatably attached to the mouth portion 101 of the container body 100 by a non-rotating mechanism (not shown). However, the cap body 2 is not limited to the stopper, and the cap body 2 may be attached to the mouth portion 101 of the container body 100 by screwing.

  The top wall portion 11 of the cap body 2 is disposed on the upper end opening edge of the mouth portion 101 of the container body 100 and covers the opening of the mouth portion 101 of the container body 100. The ceiling wall portion 11 is formed with a seal tube 12 that protrudes downward and fits inside the mouth portion 101 of the container body 100, and an extraction tube 13 that protrudes upward. ing.

The extraction tube 13 communicates with the inside of the container main body 100 through a communication tube 20 described later. Therefore, the inside of the extraction tube 13 functions as the extraction hole 4. The dispensing cylinder 13 is disposed at a position shifted to the front side with respect to the cap axis O1, and is formed so that the diameter gradually increases as the inner diameter increases upward. Therefore, the contents are easily poured out from the dispensing cylinder 13.
In the present embodiment, in a plan view of the dispensing cap 1 as viewed from above and below, the direction orthogonal to the axis O2 of the dispensing cylinder 13 is referred to as the radial direction, and the direction around the axis O2 of the dispensing cylinder 13 Is called the circumferential direction.

The top wall 11 is formed with a communication cylinder 20 that protrudes downward and communicates the extraction hole 4 with the inside of the container body 100. In the illustrated example, the communication cylinder 20 is formed so that the upper end portion is integrally connected to the extraction cylinder 13 and extends downward from the connection portion with the extraction cylinder 13. As a result, the communication cylinder 20 is formed integrally with the top wall 11 via the extraction cylinder 13. The communication cylinder 20 is arranged coaxially with the axis O2 of the dispensing cylinder 13.
Further, the communication tube 20 includes a first taper portion 21 that gradually decreases in diameter as it goes downward, a second taper portion 22 that rapidly decreases in diameter from the lower end portion of the first taper portion 21, and a second A straight portion 23 protruding downward from the lower end portion of the tapered portion 22 is formed in a two-stage cylindrical shape.

A valve body 24 is accommodated in the communication cylinder 20 so as to be movable up and down. In the illustrated example, a spherical (true spherical) ball valve is exemplified as the valve body 24. The inner diameter of the first taper portion 21 is larger than the diameter of the valve body 24, and the inner diameter of the straight portion 23 is smaller than the diameter of the valve body 24. Therefore, the valve body 24 can be seated over the entire circumference of the inner peripheral surface of the second tapered portion 22.
The inner peripheral surface of the second taper portion 22 functions as a valve seat portion 22a on which the valve body 24 is seated so as to be separated upward. Further, the inside of the straight portion 23 functions as an injection hole 25. The valve seat portion 22a blocks communication between the communication cylinder 20 and the container body 100 when the valve body 24 is seated.

As shown in FIG. 1, a plurality of guide ribs (vertical ribs) 26 are provided on the inner peripheral surface of the first tapered portion 21 of the communication tube 20 to guide the valve body 24 so as to be movable up and down. These guide ribs 26 are arranged at intervals in the circumferential direction, project from the inner circumferential surface of the first taper portion 21 toward the radial inner side, and are formed vertically long along the vertical direction. .
In the illustrated example, three guide ribs 26 are formed at intervals in the circumferential direction, and extend downward so as to reach the upper portion of the inner peripheral surface of the second tapered portion 22. As described above, the formation range of the guide rib 26 may include the upper portion of the second tapered portion 22 as long as the seating region of the valve body 24 can be appropriately secured.

At the upper end portion of the guide rib 26, a restricting protrusion (a restricting portion) 26 a that protrudes inward in the radial direction and restricts the valve body 24 from separating upward with respect to the guide rib 26 is formed.
Since the plurality of guide ribs 26 are formed in the communication cylinder 20, the valve body 24 is guided so as to smoothly move up and down while being stably supported inside the guide ribs 26, and is upwardly moved by the restriction protrusions 26 a. Omission to is regulated. The restricting protrusion 26 a restricts the upward movement of the valve body 24 in a state where the inside of the communication cylinder 20 and the extraction hole 4 are communicated with each other.

  Further, the gap between the guide ribs 26 adjacent in the circumferential direction functions as a flow passage 27 through which the contents flowing into the communication cylinder 20 from the container body 100 through the injection hole 25 circulate. As a result, the contents reach the pouring hole 4 without being blocked by the valve body 24.

Further, a rectifying ring (annular member) 28 is formed integrally on the inner peripheral surface of the first tapered portion 21 in the communication cylinder 20 and extends over the entire inner peripheral surface of the first tapered portion 21. Yes. The rectifying ring 28 is disposed between the guide rib 26 and the extraction hole 4.
In the illustrated example, the rectifying ring 28 is formed so as to extend upward as it goes radially inward from a portion of the inner peripheral surface of the first taper portion 21 located above the guide rib 26.
Thus, the rectifying ring 28 is located above the flow passage 27 so as to cover the flow passage 27 from above. Therefore, the contents circulated in the flow passage 27 are configured to hit the rectifying ring 28 after passing through the flow passage 27.

  In the example shown in the figure, the radially inner end of the rectifying ring 28 is located radially outside the restricting protrusion 26 a of the guide rib 26, but the radially inner end is the restricting protrusion 26 a of the guide rib 26. The amount of protrusion of the rectifying ring 28 may be adjusted so as to be the same as or inward of the regulating protrusion 26a in the radial direction.

  As shown in FIG. 1, the lid 3 is formed in a cylindrical shape with a peripheral wall portion 30 and a top wall portion 31, covers the entire top wall portion 11 of the cap body 2 from the upper side, and is poured out. Open and close. A lower end portion of the peripheral wall portion 30 is detachably fitted to the top wall portion 11 of the cap body 2 from the outside by using a stepped portion 10 a formed at the upper end portion of the peripheral wall portion 10 of the cap body 2. A lower end portion of the peripheral wall portion 30 in the lid 3 and an upper end portion of the peripheral wall portion 10 in the cap body 2 are integrally connected via the hinge portion 5.

  An operation piece 32 that protrudes outward in the radial direction is formed in a portion of the peripheral wall portion 30 of the lid body 3 that is located on the opposite side of the hinge portion 5 across the cap shaft O1. By using the operation piece 32, the lid 3 can be easily rotated around the hinge portion 5.

  On the top wall portion 31 of the lid body 3, a closing cylinder 33 that protrudes downward and is detachably fitted inside the pouring cylinder 13 or inside the communication cylinder 20 is formed coaxially with the axis O <b> 2 of the communication cylinder 20. Has been. In the example shown in the drawing, the closing cylinder 33 is fitted inside the communication cylinder 20 so as to enter the inside of the communication cylinder 20 from the connection portion (the upper end portion of the communication cylinder 20) between the extraction cylinder 13 and the communication cylinder 20. ing. In this way, when the closing cylinder 33 is fitted inside the communication cylinder 20, the dispensing hole 4 is sealed so that it can be opened and closed. When the closing cylinder 33 is fitted inside the communication cylinder 20, the lower end portion of the closing cylinder 33 is positioned above the rectifying ring 28 and does not interfere with the rectifying ring 28.

Further, on the inner side of the closing cylinder 33, a columnar pressing rod 34 protruding downward from the top wall portion 31 of the lid 3 is formed coaxially with the axis O <b> 2 of the communication cylinder 20.
The pressing rod 34 protrudes downward from the closing cylinder 33. Even when the valve body 24 remains in contact with the restricting projection 26a due to, for example, biting, the pressing rod 34 presses the valve body 24 from above. Thus, it can be forcibly separated from the restricting protrusion 26a. That is, the pressing rod 34 functions as a preliminary recovery member for forcibly separating the valve body 24 from the restricting projection 26a and seating on the valve seat portion 22a.

  As shown in FIGS. 2 to 4, a holding gap 40 for holding the contents is provided between the surface of the valve body 24 and the surface of the valve seat portion 22a. The holding gap 40 is defined by a concave portion or a convex portion provided on at least one of the surface of the valve body 24 and the surface of the valve seat portion 22a. In the illustrated example, the holding gap 40 is defined by a convex portion 41 provided on the surface of the valve seat portion 22a. The convex part 41 is arrange | positioned in the equivalent position along the guide rib 26 and the circumferential direction. The convex portion 41 is integrally provided on the surface of the valve seat portion 22 a and the inner peripheral surface of the injection hole 25. The convex portion 41 extends from the portion that continues to the guide rib 26 from the inside in the radial direction in the valve seat portion 22a toward the inside in the radial direction, passes through the inner peripheral edge of the valve seat portion 22a, and then the inner peripheral surface of the injection hole 25 It extends until it reaches the lower end. In addition, since the convex part 41 exhibits an effect as long as it is formed at least in the valve seat part 22a in contact with the valve body 24, it does not need to be provided up to the lower end of the inner peripheral surface of the injection hole 25, and can be set as appropriate. .

  In the present embodiment, the communication cylinder 20 is formed in a cylindrical shape, and the surface of the valve seat portion 22a is formed in a conical surface, whereas the surface of the convex portion 41 is circumferential on the surface of the valve seat portion 22a. It is formed in the planar shape extended in the circumferential direction so that two places spaced apart in the direction may be connected. Of the cross-sectional views of the communication tube 20 orthogonal to the axis O2, in the cross-sectional view including the convex portion 41, the surface of the convex portion 41 extends linearly along the circumferential direction. It is sufficient that at least one convex portion 41 is provided, and a plurality of convex portions 41 can be arranged at intervals in the circumferential direction.

  The holding gap 40 is a state in which the valve body 24 is seated on the valve seat portion 22a, the surface of the convex portion 41, the surface of the valve seat portion 22a that avoids the convex portion 41 along the circumferential direction, It is defined between the surface of the body 24. The holding gap 40 is a fine hole extending in a slit shape in the circumferential direction. The gap height H, which is the size of the holding gap 40 along the radial direction of the valve body 24, is preferably 0.01 mm or more and 0.06 mm or less, for example, 0.02 mm or more and 0.05 mm or less. Is more preferable. In the design, if the gap height H is set to 0.02 mm or more and 0.05 mm or less, the gap height H is 0.01 mm or more and 0.06 mm or less in an actual product even if molding errors are taken into consideration. Can be easily maintained.

(Action of dispensing cap)
Next, the operation when the contents are poured out using the dispensing cap 1 configured as described above will be described.
When pouring the contents, first, the lid 3 is rotated around the hinge portion 5 to open the pouring hole 4. Thereafter, the container body 100 is tilted and squeezed so that the mouth 101 of the container body 100 faces downward, and the valve body 24 uses its own weight or the pressure in the container body 100 (inside the inner container 100a). Then, it is separated from the valve seat portion 22a, and the inside of the container main body 100 and the inside of the communication cylinder 20 are communicated.

As a result, the inside of the container main body 100 communicates with the inside of the extraction hole 4 through the inside of the communication cylinder 20, so that the contents stored in the container main body 100 can be transferred from the extraction hole 4 through the inside of the injection hole 25 and the communication cylinder 20. Can be dispensed. At this time, the content reaches the extraction hole 4 through the flow passage 27 which is a gap between the guide ribs 26 adjacent to each other in the circumferential direction, so that the flow is not obstructed by the valve body 24 and the content is removed from the extraction hole 4. It can be reliably poured out. In addition, in the present embodiment, after the contents pass through the flow passage 27, the contents reach the pouring hole 4 while getting over the rectifying ring 28. Therefore, the contents of the pouring hole 4 are changed while the flow direction is changed by the rectifying ring 28. To reach. Therefore, after the contents pass through the flow passage 27 and hit the rectifying ring 28, the flow direction changes to, for example, the circumferential direction along the rectifying ring 28, and merges with each other. However, it passes over the flow straightening ring 28 and is poured out from the pouring hole 4.
In addition, since the valve body 24 separated from the valve seat portion 22a is in contact with the restriction protrusion 26a of the guide rib 26, further movement is restricted and the valve body 24 does not fall out of the communication tube 20.

Thereafter, for example, the container body 100 is returned to the upright posture so that the mouth part 101 faces upward, and the squeeze deformation of the container body 100 is released, and the valve body 24 is self-weighted or the container body 100 accompanying the restoring deformation of the container body 100. It is seated again on the valve seat portion 22a by using the internal pressure reduction or the like. Thereby, since communication with the inside of the container main body 100 and the inside of the communication pipe | tube 20 can be interrupted | blocked, the extraction of the content can be stopped. At this time, due to the suck back effect accompanying the movement of the valve body 24, the contents in the vicinity of the pouring hole 4 can be drawn, and dripping from the pouring hole 4 can be effectively suppressed.
Thus, the contents can be reliably poured out while appropriately switching between communication and blocking by the valve body 24.

  As described above, when the squeeze deformation is released, the outer container 100b tries to be restored and deformed. At this time, if the valve body 24 is seated on the valve seat portion 22a and the inner container 100a is sealed, a negative pressure is generated between the outer container 100b and the inner container 100a. At this time, outside air is sucked between the outer container 100b and the inner container 100a through the intake slit portion. Thus, the volume reduction shape of the inner container 100a is maintained by sucking the outside air between the outer container 100b and the inner container 100a.

  Thereafter, the lid 3 is rotated around the hinge 5 to close the pouring hole 4. At this time, since the valve body 24 is seated on the valve seat portion 22a, the above-described holding gap 40 is formed. Therefore, when closing the pouring hole 4, even if the pressure inside the communication cylinder 20 is likely to be increased when the closing cylinder 33 is fitted inside the communication cylinder 20, this internal pressure is passed through the holding gap 40 to the container. It can be made easy to escape into the main body 100 (inside the inner container 101a).

As described above, according to the dispensing cap 1 according to the present embodiment, the holding gap 40 is provided between the surface of the valve body 24 and the surface of the valve seat portion 22a. It can suppress that the valve body 24 and the valve seat part 22a contact over the perimeter of the circumferential direction in the state seated on the seat part 22a. As a result, even if the contents solidify between the surface of the valve body 24 and the surface of the valve seat portion 22a, the degree of adhesion between the valve body 24 and the valve seat portion 22a is weakened, and the valve body 24 Can be prevented from coming into close contact with the valve seat portion 22a. Therefore, when the container body 100 is tilted or squeezed and deformed at the time of the next pouring, the valve body 24 can be easily separated from the valve seat portion 22a.
In addition, since the holding gap 40 holds the contents, the holding gap 40 can hold the contents when the valve body 24 separated from the valve seat portion 22a is seated on the valve seat portion 22a again. Accordingly, even if the holding gap 40 is provided between the surface of the valve body 24 and the surface of the valve seat portion 22a as in the dispensing cap 1, air is externally introduced into the container body 100 (inside the inner container 100a). ) Can be regulated through the holding gap 40.

  Further, since the holding gap 40 is defined by the convex portion 41, it is possible to adjust the shape and size of the holding gap 40 by adjusting the shape and size of the convex portion 41, and the holding gap 40 can be formed easily and accurately.

(Second Embodiment)
Next, the extraction cap of 2nd Embodiment which concerns on this invention is demonstrated with reference to FIG. 5 and FIG.
In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points will be described.

In the pouring cap according to the present embodiment, the convex portion 41 is formed in a convex rib shape extending in the vertical direction, and the surface of the convex portion 41 is convex toward the inner side in the radial direction in the above-described cross-sectional view. It is formed in a curved shape. The protruding amount of the convex portion 41 toward the inner side in the radial direction is gradually increased from the both sides in the circumferential direction of the convex portion 41 toward the central portion.
According to the pouring cap according to the present embodiment, the same operational effects as those of the embodiment can be obtained.

(Third embodiment)
Next, the extraction cap of 3rd Embodiment which concerns on this invention is demonstrated with reference to FIG. 7 and FIG.
In the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points will be described.

In the pouring cap according to the present embodiment, the convex portion 41 is formed in a protruding shape. The convex portion 41 is formed in a circular shape in plan view of the convex portion 41, and the surface of the convex portion 41 is formed in a convex spherical shape. The convex part 41 is arrange | positioned in the part (inner periphery of the valve seat part 22a) connected to the injection hole 25 among the valve seat parts 22a. Moreover, the shape of the convex part 41 can be suitably set according to the content.
According to the pouring cap according to the present embodiment, the same operational effects as those of the embodiment can be obtained.

(Fourth embodiment)
Next, a dispensing cap according to a fourth embodiment of the present invention will be described with reference to FIGS. 9 and 10.
In the fourth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points will be described.

  In the dispensing cap according to the present embodiment, the holding gap 40 is defined by a recess 42 provided on the surface of the valve seat portion 22a. The recessed part 42 is arrange | positioned in the equivalent position along the guide rib 26 and the circumferential direction. The recess 42 is formed in a longitudinal groove shape extending in the vertical direction on the inner surface of the communication tube 20. The recess 42 extends downward from a portion of the valve seat portion 22a that is continuous with the injection hole 25 (inner peripheral edge of the valve seat portion 22a).

The recess 42 extends over the entire inner peripheral surface of the injection hole 25 in the vertical direction, and the lower end of the recess 42 reaches the lower end of the inner peripheral surface of the injection hole 25. Of the cross-sectional views of the communication tube 20 orthogonal to the axis O2, the recesses 42 are formed in a rectangular shape in the cross-sectional view including the recesses 42.
The holding gap 40 is provided between the surface (inner surface) of the recess 42 and the surface of the valve body 24 in a state where the valve body 24 is seated on the valve seat portion 22a.

  According to the dispensing cap according to the present embodiment, since the holding gap 40 is defined by the recess 42, the shape and size of the holding gap 40 are adjusted by adjusting the shape and size of the recess 42. This makes it possible to form the holding gap 40 easily and accurately.

(Fifth embodiment)
Next, a dispensing cap according to a fifth embodiment of the present invention will be described with reference to FIGS.
In the fifth embodiment, the same components as those in the fourth embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points will be described.

In the pouring cap according to the present embodiment, the surface of the recess 42 is formed in a curved shape that is convex outward in the radial direction in the above-described cross-sectional view. The recess 42 extends from the portion of the valve seat portion 22a that is continuous with the guide rib 26 from the inside in the radial direction toward the inside in the radial direction, passes through the inner periphery of the valve seat portion 22a, and It extends until it reaches the lower end. The recess 42 is effective as long as it is formed at least in the valve seat portion 22a in contact with the valve body 24. Therefore, the recess 42 does not need to be provided up to the lower end of the inner peripheral surface of the injection hole 25 and can be set as appropriate.
According to the pouring cap according to the present embodiment, the same operational effects as those of the embodiment can be obtained.

(Sixth embodiment)
Next, a dispensing cap according to a sixth embodiment of the present invention will be described with reference to FIGS.
In the sixth embodiment, the same components as those in the fourth embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points will be described.

In the pouring cap according to the present embodiment, the recess 42 is formed in a dimple shape. The recess 42 is formed in a circular shape in a plan view of the recess 42, and the surface of the recess 42 is formed in a concave spherical shape. The recessed part 42 is arrange | positioned in the part (inner periphery of the valve seat part 22a) which continues to the injection hole 25 among the valve seat parts 22a.
According to the pouring cap according to the present embodiment, the same operational effects as those of the embodiment can be obtained.

(Seventh embodiment)
Next, a dispensing cap according to a seventh embodiment of the present invention will be described with reference to FIG.
In the seventh embodiment, the same components as those in the third embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points will be described.

In the pouring cap according to the present embodiment, the convex portion 41 is provided on the surface of the valve body 24. A plurality of convex portions 41 are arranged on the surface of the valve body 24 with an equal interval. In a state where the valve body 24 is seated on the valve seat portion 22a, a plurality of convex portions 41 adjacent to each other in the vertical direction abut on the valve seat portion 22a.
The holding gap 40 is provided between the surface of the convex portion 41, the surface of the valve body 24, and the surface of the valve seat portion 22a in a state where the valve body 24 is seated on the valve seat portion 22a.
According to the pouring cap according to the present embodiment, the same operational effects as those of the embodiment can be obtained.

(Eighth embodiment)
Next, a dispensing cap according to an eighth embodiment of the present invention will be described with reference to FIG.
In the eighth embodiment, the same components as those in the seventh embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points will be described.

In the pouring cap according to the present embodiment, in the state where the valve body 24 is seated on the valve seat portion 22a, one convex portion 41 is in contact with the inner peripheral edge of the valve seat portion 22a, and a plurality of adjacent ones in the vertical direction. The convex portions 41 are not in contact with each other at the same time.
According to the pouring cap according to the present embodiment, the same operational effects as those of the embodiment can be obtained.

(Ninth embodiment)
Next, a dispensing cap according to a ninth embodiment of the present invention will be described with reference to FIG.
In the ninth embodiment, the same components as those in the seventh embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points will be described.

  In the extraction cap according to the present embodiment, the valve body 24 is formed in a columnar shape extending in the vertical direction. The valve body 24 is formed in a cylindrical shape coaxial with the axis O2. Both end portions 24a in the vertical direction of the valve body 24 are gradually reduced in diameter toward the outside in the vertical direction. The outer peripheral surface of the end 24a is formed in a conical shape and extends in parallel with the valve seat 22a, and the end 24a is seated on the valve seat 22a. A convex portion 41 is provided at the end portion 24a.

The central portion 24b in the vertical direction of the valve body 24 has the same diameter toward the entire length in the vertical direction, and the outer peripheral surface of the central portion 24b is formed in a cylindrical surface, and the guide rib 26 has a radially inner side. It extends parallel to the facing end face. The convex part 41 is not provided in the center part 24b.
According to the pouring cap according to the present embodiment, the same operational effects as those of the embodiment can be obtained.

(10th Embodiment)
Next, a dispensing cap according to a tenth embodiment of the present invention will be described with reference to FIG.
In the tenth embodiment, the same components as those in the ninth embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points will be described.

  In the pouring cap according to the present embodiment, the outer peripheral surface of the end 24a of the valve body 24 and the valve seat 22a are not parallel. In a longitudinal sectional view of the communication cylinder 20 passing through the axis O2, the valve seat portion 22a is greatly inclined with respect to a reference axis extending in the vertical direction rather than the outer peripheral surface of the end portion 24a. Thereby, the end 24a of the valve body 24 is seated only on the inner periphery of the valve seat 22a.

A concave portion 42 is provided on the surface of the valve body 24 instead of the convex portion 41. The concave portion 42 is formed in a vertical groove shape extending in the vertical direction on the outer peripheral surface of the end portion 24a. The recess 42 extends over the entire length of the end 24a in the vertical direction.
The holding gap 40 is provided between the surface (inner surface) of the recess 42 and the surface of the valve seat portion 22a in a state where the valve body 24 is seated on the valve seat portion 22a.

  According to the pouring cap according to the present embodiment, the same operational effects as those of the embodiment can be obtained.

(Eleventh embodiment)
Next, a dispensing cap according to an eleventh embodiment of the present invention will be described with reference to FIGS.
In the eleventh embodiment, the same components as those in the fourth embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points will be described.

  In the pouring cap according to the present embodiment, the valve seat portion 22a is formed in an elliptical ring shape that allows the inside of the communicating cylinder 20 and the inside of the container body 100 to communicate with each other. That is, in the valve seat portion 22a, each portion located in the major axis direction in a plan view of the valve seat portion 22a is provided with a concave portion 42 that is concave toward the outer side in the major axis direction. The seat portion 22a is formed in an elliptical ring shape. The holding gap 40 is formed on both outer sides in the long axis direction with respect to the valve body 24.

  As described above, according to the dispensing cap 1 according to the present embodiment, the valve body 24 is formed in a true spherical shape, and the valve seat portion 22a is formed in an elliptical ring shape. In the state of being seated on the seat portion 22a, for example, as in the present embodiment, it is possible to form the holding gaps 40 on both sides in the long axis direction with respect to the valve body 24, and the holding gaps 40 can be easily and accurately formed. It can be formed well.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

  For example, both the concave portion 42 and the convex portion 41 may be provided on the surface of the valve body 24, and both the concave portion 42 and the convex portion 41 may be provided on the surface of the valve seat portion 22a. There may be a concave portion 42 or a convex portion 41 on both surfaces of the seat portion 22a.

The size and shape of the rectifying ring 28 are not limited to the above embodiment, and the design may be changed as appropriate according to the inner diameter of the communication tube 20, the number of guide ribs 26 and the flow passages 27, the type of contents, and the like. I do not care. In any case, the rectifying ring 28 is formed in an annular shape and is located above each flow passage 27, and is changed into one flow by changing the flow direction of the contents flowing through each flow passage 27. I hope I can.
Therefore, the position of the rectifying ring 28 is not limited to the inner peripheral surface of the first tapered portion 21 in the communication tube 20, and may be formed on the inner peripheral surface of the dispensing tube 13, for example.

Further, the case where the rectifying ring 28 and the communication cylinder 20 are integrally formed has been described as an example, but the rectification ring 28 is formed separately from the communication cylinder 20 and the rectification ring is formed on the inner peripheral surface of the communication cylinder 20. 28 may be fitted and combined later.
In this case, since the cap body 2 can be formed without worrying about the rectifying ring 28, it is easy to freely design the inner diameter and the like of the communication tube 20, and the degree of design freedom can be improved. Further, since the rectifying ring 28 can be incorporated into the communication cylinder 20 after the valve body 24 is accommodated in the communication cylinder 20, it is easy to assemble and to improve manufacturing efficiency.
Further, the rectifying ring 28 may not be provided.

  In the above embodiment, the communication cylinder 20 is formed integrally with the cap body 2, but the communication cylinder 20 may be formed separately from the cap body 2.

  Moreover, in the said embodiment, although the said intake slit part is formed in the bottom part of the outer container 100b, another structure is employ | adopted as a structure which inhales external air between the inner container 100a and the outer container 100b. Is possible. For example, the inlet 101b of the outer container 100b is provided with an intake hole for sucking outside air with the inner container 100a, and the extraction cap 1 is provided with an outside air introduction hole that can communicate with the intake hole, and the outside air introduction hole. It is also possible to provide an outside air introduction valve that can be freely opened and closed. Furthermore, for example, it is possible to provide an outside air introduction hole for sucking outside air between the inner container 100a and an outside air introduction valve for closing the outside air introduction hole so as to be openable and closable.

  Moreover, in the said embodiment, although the extraction pipe | tube 13 was formed in the ceiling wall part 11 of the cap main body 2, you may form only the extraction | pouring hole 4 without forming the extraction pipe | tube 13. As shown in FIG. Further, the valve body 24 is not limited to a spherical ball valve, and may be formed in a capsule shape, for example, as long as it has at least a contact surface portion seated on the valve seat portion 22a.

  Furthermore, in the said embodiment, although it was set as the structure which comprised the cover body 3, the cover body 3 does not need to be comprised. Furthermore, when the lid 3 is provided, the closing cylinder 33 may not be provided, and the cap body 2 may not be connected via the hinge portion 5. However, when the lid 3 is connected to the cap body 2 via the hinge portion 5, the lid 3 can be opened and closed with one touch, for example, and it is easy to use and can prevent the lid 3 from being lost.

  In addition, it is possible to appropriately replace the constituent elements in the embodiment with known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

  Next, a description will be given of the operation and effect verification test described above.

  In this verification test, a plurality of types of dispensing caps 1 of the examples according to the first embodiment were prepared with different gap heights H. Specifically, 10 types of dispensing caps 1 were prepared in increments of 0.01 mm until the gap height H reached 0.01 mm to 0.1 mm. Moreover, unlike the extraction cap 1 according to the first embodiment, one type of comparative extraction cap without the holding gap 40 was prepared, and 11 types of extraction caps were prepared in total. In addition, about the extraction cap of a comparative example, it is set as clearance gap height H = 0mm for convenience.

  In addition, four types of contents A to D were prepared as contents to be stored in the container body 100. In this verification test, soy sauce was adopted as the contents A, oil was adopted as the contents B, syrup was adopted as the contents C, and a tonkatsu sauce was adopted as the contents D. These contents have different viscosities, and the viscosities of the contents are appended in Table 1 described later.

And about each of 11 types of extraction caps, the quality of the discharge defect countermeasure and the presence or absence of air suction were tested and confirmed.
In the test for the quality of measures against discharge failure, after the contents are once poured out for each dispensing cap, the valve body 24 separates from the valve seat portion 22a when the container body 100 is squeezed to be dispensed next time. It was confirmed whether the contents were discharged.
In the test for the presence or absence of air suction, after the container body 100 is tilted and squeezed into a squeeze shape for each dispensing cap, the container body 100 is returned to an upright posture and the squeeze deformation of the container body 100 is released. It was visually confirmed whether or not air was sucked into the transparent container body 100.

For each test of whether or not the discharge failure measures are good and whether or not air is sucked in, prepare 5 each of 11 types of dispensing caps, and without using the dispensing cap for each type of dispensing cap. It was carried out 5 times.
In the test of whether or not the discharge failure countermeasure is good, if no discharge failure occurred in any of the 5 dispensing caps, it was evaluated as “◯”, and 2 of the 5 dispensing caps had the ejection failure. In the case of three or less, it was evaluated as “Δ”, and in the case of three or more dispensing caps in which ejection failure occurred among the five dispensing caps, it was evaluated as “x”.
In the test for the presence or absence of air inhalation, if none of the five extraction caps were inhaling air, it was evaluated as “○”, and out of the five extraction caps, the extraction cap in which air inhalation occurred In the case of two or less, it was evaluated as “Δ”, and in the case of three or more extraction caps in which air was sucked out of the five extraction caps, it was evaluated as “x”.

  The results are shown in Table 1 below.

From Table 1 above, it was confirmed that the discharge caps of the examples were improved in terms of ejection failure compared to the discharge caps of the comparative examples, regardless of the viscosity of the contents.
Further, since the gap height H is 0.01 mm or more and 0.06 mm or less, preferably 0.02 mm or more and 0.05 mm or less, it is effective for both discharge failure and air suction regardless of the viscosity of the contents. It was confirmed that it was possible to take measures.

DESCRIPTION OF SYMBOLS 1 Pouring cap 2 Cap body 4 Pouring hole 11 Top wall part 20 Communication pipe | tube 22a Valve seat part 24 Valve body 26a Restriction protrusion (regulation part)
40 Holding gap 41 Convex part 42 Concave part 100 Container body 100a Inner container 100b Outer container 101 Mouth

Claims (3)

Mounted on the mouth of a container main body having a flexible inner container that accommodates contents and squeezes and deforms as the contents decrease, and an outer container in which the inner container is housed and elastically deformable. A pouring cap,
It has a top wall part that covers the opening of the mouth part of the container body, and includes a cap body in which a pouring hole for pouring contents is formed on the top wall part,
In the top wall portion, a communication tube that communicates the extraction hole and the inside of the container body extends downward,
In the communication tube,
A valve body arranged to be movable up and down;
The valve body is seated so as to be separable upward, and a valve seat portion that blocks communication between the communication cylinder and the container body;
In a state where the inside of the communication cylinder and the extraction hole are in communication with each other, a regulating portion that regulates the upward movement of the valve body is disposed,
Between the surface of the valve body and the surface of the valve seat portion, with the valve body seated on the valve seat portion, a circumferential direction with respect to a portion where the valve body and the valve seat portion are in contact with each other A pour-out cap characterized in that a holding gap is provided adjacent to and holding the contents.   The pouring cap according to claim 1, wherein the holding gap is defined by a concave portion or a convex portion provided on at least one of a surface of the valve body and a surface of the valve seat portion. The valve body is formed in a spherical shape,
The pouring cap according to claim 1, wherein the valve seat portion is formed in an elliptical ring shape that allows the inside of the communicating cylinder and the inside of the container body to communicate with each other.

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