JP2016055893A - Cap with non-return valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap with a non-return valve capable of adjusting a pouring amount of a content fluid easily with a simple structure while ensuring sealability with the non-return valve.SOLUTION: A cap 10 with a non-return valve mounted to a mouth part of a container 70 comprises a cap part 20, an inside plug 50 having a pouring port 52, and a non-return valve 60 having an opening/closing valve part 62 for closing the pouring port 52. The non-return valve 60 comprises a base part 61, the opening/closing valve part 62, and an elastic connection part 63 which is elastically deformable and connects the base part 61 and the opening/closing valve part 62. The non-return valve 60 is arranged in a valve arrangement space 56 formed above the pouring port 52 while having an allowance so that the entire non-return valve 60 can move.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cap with a check valve attached to a mouth portion of a container.

  Conventionally, it is composed of an outer layer body and an inner layer body disposed in the outer layer body, and the outer layer body is pressurized from the outside to pour out the content liquid in the inner layer body, and after the content liquid is poured out, it is formed in the outer layer body. A squeeze container having a double structure that restores only the body portion of the outer layer body to the original shape by taking outside air between the outer layer body and the inner layer body through the outside air introduction hole is known (for example, Patent Document 1). See).

  This type of container has been widely used in a wide range of fields in recent years as a bottle for filling beverages, etc., and was formed on the inner stopper from the viewpoint of maintaining the quality of the liquid contents (preventing the oxidation of internal products or preventing volatilization of components). There is a check valve that closes the outlet so that it can be opened and closed, and opens only when the liquid is poured out.

  The check valve includes a base fixed to the peripheral portion such as the inner plug and the cap, an opening / closing valve that closes the spout, and an elastic connecting portion that connects the opening / closing valve to the base in a cantilevered manner. It is comprised and it is comprised so that a spout may be open | released by elastically deforming an elastic connection part with the discharge pressure of a content liquid, and moving an on-off valve part at the time of the extraction of a content liquid.

JP 2014-028642 A

  In a container as described in this patent document 1, when a user tries to pour out a desired amount of the content liquid, the user adjusts the force to pressurize the outer layer body, The amount of movement of the on-off valve portion is adjusted by adjusting the discharge pressure. However, since it is necessary to adjust the amount of movement of the on-off valve part only by adjusting the pressure to pressurize the outer layer body, the applied pressure is too weak to sufficiently dispense the content liquid. There is a problem that it is difficult to adjust the force to obtain a desired amount of dispensing, for example, the content liquid is unexpectedly poured out at a stretch unexpectedly because the applied pressure is too strong.

  Accordingly, the present invention solves these problems, and is a check that can easily adjust the amount of liquid dispensed with a simple structure while ensuring sealing by a check valve. The object is to provide a cap with a valve.

  The present invention is a cap with a check valve attached to the mouth portion of a container, comprising a cap portion, an inner plug having a spout, and a check valve having an on-off valve portion that closes the spout. The check valve has a base, the on-off valve portion, and an elastically deformable elastic connecting portion that connects the base and the on-off valve portion, and the check valve is located above the spout. The above-mentioned problem is solved by arranging the check valve in a state having play so that the entire check valve is movable in the valve arrangement space formed in the above.

According to the first aspect of the present invention, the check valve having the base portion, the on-off valve portion, and the elastic connecting portion can be moved into the valve arrangement space formed outside the spout. If the container is tilted, the container is tilted to use the weight of the liquid, or the container is pressurized with a weak force to move the entire check valve in the valve arrangement space. The first state where the content liquid pouring channel is kept small, and the container is elastically deformed by pressurizing the container with a strong force, and the content liquid pouring channel is secured large. Since the second state can be properly used, the amount of liquid dispensed can be easily and appropriately adjusted while avoiding an increase in the number of parts with a simple structure.
In addition, by arranging the check valve with play in the valve arrangement space, it is not necessary to install the check valve in the peripheral part such as the inner plug or cap part, reducing the work load related to assembly can do.

According to the second aspect of the present invention, the base portion and the on-off valve portion are connected to each other by a plurality of elastic connecting portions extending toward the on-off valve portion side from a plurality of locations in the circumferential direction of the annular base portion. By configuring the valve, a plurality of elastic connecting portions can be elastically deformed by the discharge pressure of the content liquid, and the entire opening / closing valve portion can be moved away from the spout, thus ensuring a large discharge flow path for the content liquid. be able to.
According to the invention of claim 3, the valve arrangement space is a space defined by a valve seat portion formed in the inner plug and a valve positioning portion formed in the cap portion to prevent the check valve from coming out. By installing a check valve on the valve seat of the inner stopper and then mounting the cap on the mouth side of the container, it is possible to easily install the check valve in the valve arrangement space Therefore, it is possible to avoid an increase in work load related to assembly work.
According to the invention of claim 4, the check valve is disposed so as to close the spout from above, and the check valve is formed so as to have a specific gravity lighter than that of the check liquid. Even if the content liquid remains in the upper space of the spout after pouring, the check valve floats in the content liquid and the spout can be kept open. The remaining content liquid can be smoothly collected in the inner bag with a structure and a small number of parts.
Further, according to the invention of claim 5, the check valve is formed from a material having a specific gravity of 0.9 to 0.95 g / cm ³ , so that the check valve is reversed in the content liquid remaining in the upper space of the spout. Since the stop valve can be floated satisfactorily, the content liquid can be reliably recovered.
According to the sixth aspect of the present invention, the sealing surface of the on-off valve portion is formed in a spherical band shape, and the sealed surface of the inner plug is formed in a tapered shape whose diameter decreases from above to below. Thus, even if there is a slight deviation in the position and posture of the opening / closing valve portion with respect to the spout, it is possible to make the sealing surface of the opening / closing valve portion annularly contact the sealed surface of the inner plug Therefore, the spout can be reliably closed by the on-off valve portion.

Sectional drawing which shows the container which attached the cap with a non-return valve which is one Embodiment of this invention. Sectional drawing which shows the container of the state which opened the upper cover. Sectional drawing which shows the mode of the cap with a non-return valve at the time of pouring out a small amount of content liquids. Sectional drawing which shows the mode of the cap with a non-return valve at the time of pouring a large amount of contents liquids. Explanatory drawing which shows the inner stopper which comprises a cap with a non-return valve. Explanatory drawing which shows the non-return valve which comprises a cap with a non-return valve.

  Below, cap 10 with a check valve concerning one embodiment of the present invention is explained based on a drawing.

  First, the cap 10 with a check valve according to this embodiment is attached to the mouth of a double-structured container 70 configured as a so-called squeeze container.

  Below, the specific structure of the container 70 which is the mounting | wearing object of the cap 10 with a non-return valve is demonstrated.

  As shown in FIGS. 1 and 2, the container 70 includes a bottle 80 that is an outer container and an inner bag 90 that is an inner container disposed in the bottle 80, and pressurizes the bottle 80 from the outside. The content liquid in the inner bag 90 is poured out. After the content liquid is poured out, the outside air introduction hole 36 of the cap body 30, the gap between the skirt wall 32 of the cap body 30 and the mouth tube portion 81 of the bottle 80, and The outside air is taken in between the bottle 80 and the inner bag 90 through the outside air introduction hole 83 of the bottle 80, so that only the body portion of the bottle 80 is restored to the original shape. The container 70 is placed and stored with the cap 20 side up when not in use.

  The bottle 80 is made of material, shape, thickness, etc. so that it can be squeezed, that is, deformed in response to external pressure, and can be restored to its original shape by elasticity when the applied pressure is released. Designed. As shown in FIG. 1, a male screw portion 82 that is screwed into the female screw portion 37 of the cap body 30 is formed on the outer periphery of the mouth tube portion 81 of the bottle 80, and below the male screw portion 82. An outside air introduction hole 83 is formed.

  As shown in FIG. 1, the inner bag 90 is loaded in the bottle 80, and the mouth tube portion 91 is closely fixed to the mouth tube portion 81 of the bottle 80. The inner bag 90 is designed in material, shape, thickness, and the like so that the volume of the space between the inner bag 90 and the bottle 80 can be freely changed as the content decreases.

  Next, a specific configuration of the check valve-equipped cap 10 will be described below.

  First, as shown in FIGS. 1 and 2, the cap 10 with a check valve includes a cap portion 20 that covers the mouth tube portion 81 of the bottle 80, an inner stopper 50 that is disposed at the mouth portion of the bottle 80, The check valve 60 is disposed on the valve seat 51 of the stopper 50.

  The cap portion 20 is configured as a synthetic resin hinged cap. As shown in FIGS. 1 and 2, the cap body 30, the upper lid 40 connected to the cap body 30 so as to be opened and closed, the cap body 30, and the upper lid. The hinge connection part 21 which connects 40 is integrated.

  As shown in FIG. 1, the cap body 30 includes a disc-shaped top wall 31 having an opening at the center, a cylindrical skirt wall 32 depending from the periphery of the top wall 31, and an opening edge of the top wall 31. A pour cylinder portion 33 extending upward from the portion, and an annular protrusion-shaped valve positioning portion 34 formed on the lower surface of the top wall 31 to prevent the check valve 60 from coming out from a valve arrangement space 56 described later. The valve positioning portion 34 has an annular inner stopper 38 that protrudes from the lower surface of the top wall 31 on the outer peripheral side.

  As shown in FIG. 1, the skirt wall 32 of the cap body 30 is externally fitted to the mouth tube portion 81 of the bottle 80, and is tightly fitted to the mouth tube portion 81 of the bottle 80 below the outside air introduction hole 83 of the bottle 80. Match. A main body side locking portion 35 is formed on the outer periphery of the upper portion of the skirt wall 32, and the upper lid locking portion 45 is snap-fitted to the main body side locking portion 35 to maintain the closed state. An outside air introduction hole 36 is formed at the upper end of the skirt wall 32, and a female screw portion 37 is formed at the inner periphery of the skirt wall 32.

  As shown in FIG. 1, the upper lid 40 includes a disk-like top wall 41 and a cylindrical side wall 42 that hangs down from the periphery of the top wall 41. A sealing wall 43 is formed on the lower surface of the top wall 41 so as to protrude downward. When the sealing wall 43 is in a closed state, the outer periphery of the sealing wall 43 is placed on the inner peripheral side of the dispensing cylinder 33 of the cap body 30. By tightly adhering, the sealing performance in the closed state is improved. On the opposite side of the hinge connecting portion 21, that is, at a position facing the hinge connecting portion 21 by 180 °, an opening / closing knob 44 is formed on the outer periphery of the side wall 42 to be picked when the user opens the upper lid 40. An upper lid locking part 45 is formed at the lower end of the inner periphery of the side wall 42.

  The inner stopper 50 is formed of a synthetic resin or the like and is attached to the mouth tube portion 81 of the bottle 80 (and the inner bag 90). As shown in FIGS. 1 and 5, the check valve 60 is seated. The valve seat portion 51, the spout 52 formed in the lower portion of the valve seat portion 51, the ring-shaped portion 53 extending from the outer peripheral surface of the valve seat portion 51 toward the outer peripheral side, and the outer peripheral edge of the ring-shaped portion 53 The thin-walled air valve body 54 and the annular portion 55 projecting from the lower surface of the ring-shaped portion 53 are integrally provided.

As shown in FIG. 5, the valve seat portion 51 includes an upper portion 51 a formed in a cylindrical shape and a tapered lower portion 51 b that decreases in diameter from the upper side to the lower side. The valve seat portion 51 defines a valve arrangement space 56 in which the check valve 60 is arranged together with the valve positioning portion 34 of the cap body 30. The size of the valve arrangement space 56 is such that the check valve 60 in the valve seat portion 51 moves in the vertical direction while suppressing the horizontal movement of the check valve 60 arranged in the valve arrangement space 56. And it is formed in the magnitude | size which accept | permits the elastic deformation of the elastic connection part 63 of the non-return valve 60 mentioned later. The valve positioning portion 34 of the cap body 30 is closely fitted to the outer peripheral side of the upper portion 51 a of the valve seat portion 51. The upper surface (inner surface) of the lower portion 51b of the valve seat portion 51 functions as a sealed surface 51c that is sealed in contact with a sealing surface 62a of a check valve 60 described later.
As can be seen from FIG. 1, the air valve body 54 is configured so that the outer periphery of the upper end of the mouth tube portion 81 of the bottle 80 and the cap body 30 are allowed to flow only in the direction in which the outside air enters between the bottle 80 and the inner bag 90. The skirt wall 32 is elastically engaged with the inner periphery of the skirt wall 32.
As shown in FIG. 1, the annular portion 55 is inserted into the mouth tube portions 81 and 91 so that the outer periphery thereof is in close contact with the inner periphery of the mouth tube portion 91 of the inner bag 90.

The check valve 60 is arranged in a state having play so that the entire check valve 60 can move in the valve arrangement space 56, in other words, in the valve arrangement space 56 without being fixed to the peripheral portion. Is to be placed. The check valve 60 is made of an elastic material having a specific gravity of 0.9 to 0.95 g / cm ³ such as polyethylene or silicone resin.

  As shown in FIG. 1 and FIG. 6, the check valve 60 includes an annular base 61, an on-off valve 62 that closes the spout 52 so that it can be opened and closed, and an elastic that connects the base 61 and the on-off valve 62. A deformable elastic connecting portion 63 is integrally provided.

On the lower surface (outer peripheral surface) of the on-off valve portion 62, a spherical band formed in a ring shape when viewed in the vertical direction (a part of the spherical surface sandwiched between the two planes when the spherical surface is cut by two parallel planes) A shaped seal surface 62a is formed.
The elastic connecting portion 63 extends from a plurality of locations (three locations in the present embodiment) in the circumferential direction of the base portion 61 toward the on-off valve portion 62 side, and connects the base portion 61 and the on-off valve portion 62.

  Next, the contents liquid pouring method and the action of each part at the time of pouring in the container 70 equipped with the check valve cap 10 of the present embodiment will be described below.

  First, when the content liquid is poured out, as shown in FIGS. 3 and 4, the upper lid 40 is opened and the container 70 is tilted and held so that the hinge connecting portion 21 of the cap portion 20 is located on the upper side.

  Next, when a small amount of content liquid is to be poured out, as shown in FIG. 3, the container 70 is tilted to use the weight of the content liquid, or the bottle 80 is applied with a relatively small force. By pressure, the entire check valve 60 is moved toward the valve positioning portion 34 in the valve arrangement space 56. As a result, the content liquid pouring channel is formed small between the sealed surface 51c of the valve seat 51 and the seal surface 62a of the check valve 60, and a small amount of the content liquid can be poured out.

  On the other hand, when a large amount of content liquid is to be dispensed, as shown in FIG. 4, the bottle 80 is deformed by pressurizing the bottle 80 with a relatively large force, and the bottle 80 is reversed by the discharge pressure of the content liquid. The elastic connecting portion 63 of the stop valve 60 is elastically deformed. As a result, the content liquid pouring channel is largely formed between the sealed surface 51c of the valve seat 51 and the seal surface 62a of the check valve 60, and a large amount of the content liquid can be poured out.

  Next, the operation of each part at the time of collecting the residual liquid of the content liquid in the container 70 equipped with the check valve cap 10 of the present embodiment will be described below.

  First, in the container 70 as in the present embodiment, the content liquid may remain in the upper space of the spout 52 of the inner plug 50 in the cap body 30 after the content liquid is poured out.

  When such content liquid remains, in this embodiment, since the check valve 60 is formed from a material lighter than the content liquid, the check valve 60 is lifted by the remaining content liquid. The state where the spout 52 is opened is maintained, and as a result, the content liquid is collected in the inner bag 90 through the opened spout 52.

  Thereafter, the content liquid is collected in the inner bag 90 through the spout 52, the sealed surface 51c of the valve seat 51 and the seal surface 62a of the check valve 60 come into contact with each other, and the spout 52 is securely connected by the on-off valve portion 62. Will be blocked.

  In addition, when the collection | recovery rate of the content liquid in the inner bag 90 is quick, such as when the viscosity of the content liquid is low, it is reversed when the upper cover 40 is closed with respect to the upper cover 40 of the cap part 20 with respect to the cap main body 30. A protrusion or the like may be formed so as to contact the stop valve 60 and maintain the contact state of the seal surface 62a of the check valve 60 with the sealed surface 51c of the valve seat portion 51. By extending, the sealing wall 43 may be brought into contact with the check valve 60 and the above contact state may be maintained.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited to the said embodiment, A various design change can be performed without deviating from this invention described in the claim. Is possible.

For example, in the above-described embodiment, the container to which the cap with the check valve is attached is described as a double structure container configured as a so-called squeeze container, but the container with the check valve cap is to be attached. The specific aspect of the container is not limited to this, and for example, a cap with a check valve may be attached to a single-structure container. In the case of a single-structure container, the container shrinks as the remaining amount of the content liquid decreases, making it difficult to keep the container upright. It is preferable to provide a means such as a stand for keeping the container upright even when the amount of water is reduced.
In the above-described embodiment, the description has been made assuming that one check valve is provided. However, the number of check valves may be two or three as long as the number is one or more.
In the above-described embodiment, the cap portion and the inner plug are described as being formed separately, but these components may be integrally formed.
In the above-described embodiment, the valve arrangement space in which the check valve is arranged is defined by the valve seat portion formed in the inner plug and the valve positioning portion formed in the cap portion. The valve arrangement space may be formed, that is, both the valve seat portion and the valve positioning portion may be formed in the inner plug.
Moreover, in embodiment mentioned above, the non-return valve is comprised in the form which connected the base and the on-off valve part by the some elastic connection part extended toward the on-off valve part side from the circumferential location of the cyclic | annular base part. Although the specific aspect of the check valve is not limited to this, the check valve has a base, an on-off valve, and an elastically deformable elastic connecting part that connects the base and the on-off valve. Anything is acceptable.

DESCRIPTION OF SYMBOLS 10 ... Cap with check valve 20 ... Cap part 21 ... Hinge connection part 30 ... Cap main body 31 ... Top wall 32 ... Skirt wall 33 ... Extraction cylinder part 34・ ・ Valve positioning part 35 ・ ・ ・ Main body side locking part 36 ・ ・ ・ Outside air introduction hole 37 ・ ・ ・ Female screw part 38 ・ ・ ・ Inner plug holder 40 ・ ・ ・ Upper lid 41 ・ ・ ・ Top wall 42 ・ ・ ・Side wall 43 ... Sealing wall part 44 ... Opening / closing knob 45 ... Upper lid locking part 50 ... Middle stopper 51 ... Valve seat part 51a ... Upper part 51b ... Lower part 51c ... Sealed surface 52 ... Spout 53 ... Ring-shaped part 54 ... Air valve element 55 ... Annular part 56 ... Valve arrangement space 60 ... Check valve 61 ...・ Base 62 ... On-off valve 62a ... Sealing surface 63・ ・ ・ Elastic connection part 70 ・ ・ ・ Container 80 ・ ・ ・ Bottle 81 ・ ・ ・ Mouth part 82 ・ ・ ・ Male thread part 83 ・ ・ ・ Open air introduction hole 90 ・ ・ ・ Inner bag 91 ・ ・ ・ Mouth part

Claims (6)

A cap with a check valve attached to the mouth of the container,
A cap portion, an inner stopper having a spout, and a check valve having an on-off valve portion that closes the spout,
The check valve has a base, the opening / closing valve, and an elastically deformable elastic connecting part that connects the base and the opening / closing valve.
The check valve is arranged in a valve arrangement space formed on the upper side of the spout with a play so that the entire check valve can move. Cap with valve. The base portion of the check valve is formed in an annular shape,
2. The check according to claim 1, wherein the elastic connecting portion extends from a plurality of locations in the circumferential direction of the base toward the on-off valve portion and connects the base and the on-off valve portion. Cap with valve.   The valve arrangement space is a space defined by a valve seat portion formed in the inner plug and a valve positioning portion formed in the cap portion and preventing the check valve from coming off. Item 3. A cap with a check valve according to item 1 or 2. The container is a container that is placed with the cap portion up when not in use,
4. The check valve according to claim 1, wherein the check valve is disposed so as to close the spout from above with the container placed, and has a specific gravity lighter than the content liquid. Cap with check valve as described. The said check valve is formed from the material of 0.9-0.95 g / cm < ³ > specific gravity, The cap with a check valve of Claim 4 characterized by the above-mentioned. The on-off valve portion has a ball-shaped sealing surface formed in a ring shape when viewed in the vertical direction,
The inner plug has a tapered sealing surface formed in a ring shape and reducing in diameter from the upper side to the lower side when viewed in the vertical direction, around the spout. A cap with a check valve according to any one of claims 1 to 5.