JP2014118195A - Check valve and container with check valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a check valve which efficiently prevents suction of outside air and liquid drop of content, and can freely adjust an amount and a rate of pouring the content, and provide a container with the check valve.SOLUTION: A check valve 1 includes a housing member 10 having a fluid passage formed inside and a valve member 20 arranged inside the housing member 10. A valve seat part 11 is arranged on an inner circumference surface of the housing member 10. The valve member 20 includes: a valve element 21 seated on a seat surface 11a of the valve seat part 11 so as to seal; a pressing member 22 which is supported by the housing member 10 and presses the valve element 21 to the seat surface 11a of the valve seat part 11; and a valve drive member 23 which is connected to the valve element 21 and drives the valve element 21 against pressing force of the pressing member 22. The check valve includes an operation member 30 which is structured so as to operate the valve drive member 23 so that the valve element 21 of the valve member 20 separates from the seat surface 11a of the valve seat part 11.

Description

  The present invention relates to a check valve and a container with a check valve, more specifically, a check valve for pouring out the contents in the container, and a check valve in which the check valve is fixed to a dispensing portion. Concerning the container.

  In recent years, with the widespread use of spout pouches in which a dispenser (spout) is attached to a packaging bag (pouch), various contents have been filled in the spout pouch. Among the contents filled in such a spout pouch, for example, soy sauce, edible oil, alcoholic beverages and the like are preferably not in contact with oxygen in the air in order to prevent deterioration due to oxidation. Therefore, a spout pouch having a check valve mechanism is required for the contents as described above so as not to suck outside air immediately after the contents are poured out.

  Conventionally, various types of containers with check valves have been developed. Many of them are used to pour the contents by pressure applied to the container itself. That is, when the contents are poured out, the contents are poured out from the container by pressing the container itself by hand, increasing the internal pressure of the container and opening the valve by the pressure of the contents. On the other hand, when stopping the dispensing of the contents, the pressing on the container is stopped. Thereby, the valve is closed by generating a decompression force that sucks the valve inside the container in an attempt to return the container to its original shape.

  The above mechanism works well in the case of a container made of a relatively hard material such as a blow bottle. However, when the container is composed of a very soft and thin laminated film such as a spout pouch, it is difficult to close the valve because the pressure reducing force as described above hardly occurs even if the pressing to the container is stopped. There is a so-called “crisp” that induces a state where the liquid drops from the spout.

  Conventionally, a check valve having a mechanism for closing a valve using a restoring force of a coil spring has been disclosed as a check valve applicable even if the container is a packaging bag (Patent Document 1).

  In the case of this type of check valve, when the contents are poured out, the container is pressed and the valve is opened by the pressure of the contents as in the above-described check valve. On the other hand, when stopping the dispensing of the contents, the pressing on the container is stopped. Thereby, the valve is closed by the restoring force of the coil spring.

JP 2006-76615 A

  However, in the case of the check valve using the coil spring, the following problems occur.

  First, in the conventional check valve, when the contents are poured out, it is necessary to press the container itself by hand to increase the internal pressure of the container and open the valve with the pressure of the contents. The check valve must be kept open and the flow rate controlled by the balance between the pressure applied to the contents and the return force of the check valve coil spring. For this reason, if the force of the coil spring is too strong, the check valve switches in an unstable manner between fully open and fully closed. Conversely, if the force of the coil spring is too weak, dripping occurs when it is desired to stop pouring. In other words, the so-called “crime” is in a bad state.

  Moreover, in the conventional check valve, since the coil spring is in contact with the contents, there is a problem in that the function of the spring is reduced because the components of the contents are deposited on the coil spring. For example, when the contents are soy sauce or alcoholic beverages, components contained in the contents such as salt and sugar tend to harden around the coil spring. When the gap of the coil spring is filled with deposits, a situation may occur in which the contents cannot be poured out.

  Moreover, in order to ensure a desired restoring force, it is desirable to use a metal coil spring, but in that case, the coil spring may be rusted by moisture or salt content of the contents. In particular, when the contents are food, rusting is not allowed.

  On the other hand, when a plastic coil spring is used, it is difficult to obtain a desired restoring force. Although it is possible to increase the restoring force to some extent by making the coil spring thicker, it occupies more space in the spout formed with a predetermined inner diameter, and the amount or rate of content dispensed decreases. There is a problem that it ends up.

  The present invention has been made on the basis of the above technical recognition. The purpose of the present invention is to effectively prevent the suction of outside air and the dripping of the contents, and freely adjust the amount and speed of the contents to be dispensed. An adjustable check valve and a container with a check valve are provided.

A check valve according to an aspect of the present invention includes:
A check valve comprising a housing member having a fluid passage formed therein and a valve member disposed inside the housing member;
A valve seat is provided on the inner peripheral surface of the housing member,
The valve member is seated on the seat surface of the valve seat portion so as to be sealable, a pressing member supported by the housing member and biasing the valve body toward the seat surface of the valve seat portion, A valve drive member connected to the valve body and driving the valve body against the pressing force of the pressing member;
The valve member of the said valve member is provided with the operation member comprised so that the said valve drive member could be operated so that it might space apart from the seat surface of the said valve seat part.

In the check valve,
The valve drive member has a push sesame and a shaft that extends from the push sesame toward the valve body and connects to the valve body,
The operation member has a pair of opposed flap portions supported by the housing member via a hinge portion,
The pair of flap portions may have inclined portions that sandwich and slide the push sesame.

In the check valve,
The pressing member is at least two columnar or plate-like elastic members having one end fixed to the housing member on the downstream side of the fluid passage and the other end fixed to the peripheral edge of the valve body. The pressure member may be bent to elastically separate the valve body from the seat surface of the valve seat portion.

In the check valve,
The pressing member is a columnar or plate-like elastic member having one end fixed to the housing member on the downstream side of the fluid passage and the other end fixed to the peripheral edge of the valve body. The elastic member may be bent so that the valve body is elastically separated from the seat surface of the valve seat portion in a single-open state.

A container with a check valve according to one aspect of the present invention is
A container body containing contents and having a dispensing portion;
The housing member has a cylindrical mouth portion and a check valve according to the present invention having a tubular conduit portion connected to the mouth portion;
With
The check valve is characterized in that at least a part of the conduit portion of the housing member is fixed to the container main body so that the mouth portion of the housing member is exposed at the outlet portion of the container main body. .

  According to the present invention, since the valve body pressed by the pressing member against the seat surface of the valve seat portion has the operating member configured to be operable so that the valve driving member is separated from the seat surface, the operating member is operated. By doing so, the opening and closing of the valve body can be freely adjusted via the valve drive member.

  That is, according to the present invention, instead of opening the valve with the pressure of the contents by pressing the container itself and increasing the internal pressure like a conventional check valve, the valve drive member connected to the valve body is provided. The valve is opened by operating the valve body against the pressing force of the pressing member. Therefore, even with a container having a small restoring force such as a pouch, the opening degree of the valve and the pressure of the contents can be controlled independently, and the dispensing amount or the dispensing speed of the contents can be freely adjusted. In addition, unlike the conventional case, it is not necessary to press the container itself by hand to increase the pressure of the contents, and it is only necessary to operate the operation member with a finger. For this reason, even if it is a case where the amount of content extraction is large, the desired amount of content can be easily extracted.

  Further, according to the present invention, only when the contents are poured out, the valve body is driven by the valve driving member to be separated from the seat surface of the valve seat portion, and when the contents are not poured out, the valve body is The contents and the outside air cannot pass through the fluid passage in the housing member by being pressed by the seat surface. Therefore, inflow of outside air and dripping of contents can be effectively prevented.

  According to the invention, the pressing member is a columnar or plate-like elastic member having one end fixed to the housing member on the downstream side of the fluid passage and the other end fixed to the peripheral edge of the valve body. Thus, the pressing member does not occupy the space in the spout and does not hinder the contents passing through the circulation passage. For this reason, it is possible to prevent a decrease in the amount or the rate of extraction of the contents. In addition, since the components of the contents are deposited on the pressing member as in the case of using a coil spring, it is possible to prevent a situation in which malfunction occurs or a situation in which the contents cannot be poured out.

  Further, according to the present invention, since the pressing member is provided on the downstream side of the fluid passage as viewed from the valve body, the frequency of contact between the pressing member including the spring portion and the content is low. Therefore, it can prevent that the function which presses a valve body falls by the component of the content depositing.

  Moreover, according to this invention, it can prevent that a rust etc. generate | occur | produces in a press member by using a press member as a synthetic resin.

It is a partial cross section figure in the state where the valve of the check valve by a 1st embodiment of the present invention closed. It is a bottom view of the housing member of the check valve according to the first embodiment of the present invention. 1 is a perspective view of a dual-support type valve member according to a first embodiment of the present invention. It is a partial cross section figure in the state where the valve of the check valve by a 1st embodiment of the present invention opened. It is a front view of a container with a check valve according to an embodiment of the present invention. It is a partial cross section figure of the non-return valve by the 1st modification of the 1st Embodiment of this invention. It is a partial cross section figure of the non-return valve by the 2nd modification of the 1st Embodiment of this invention. It is a partial cross section figure of the non-return valve and container main body by the 3rd modification of the 1st Embodiment of this invention. It is a front view of the container with a non-return valve by the 3rd modification of the 1st Embodiment of this invention. It is a partial cross section figure in the state where the valve of the check valve by a 2nd embodiment of the present invention closed. It is a partial cross section figure in the state where the valve of the check valve by a 2nd embodiment of the present invention opened. It is a perspective view of the cantilever type valve member by the 2nd Embodiment of this invention.

  Hereinafter, a check valve and a container with a check valve according to an embodiment of the present invention will be described with reference to the drawings. In addition, in each figure, the component which has an equivalent function is attached | subjected the same code | symbol, and detailed description of the component of the same code | symbol is not repeated.

(First embodiment)
The check valve according to the first embodiment will be described with reference to FIGS. FIG. 1 is a partial cross-sectional view of the check valve 1 in a state where the valve is closed. FIG. 2A is a bottom view of the check valve housing member 10. FIG. 2B is a perspective view of the valve member 20. FIG. 3 shows a partial cross-sectional view of the check valve 1 in a state where the valve is open.

  As shown in FIG. 1, the check valve 1 according to the present embodiment includes a housing member 10 and a valve member 20 disposed inside the housing member 10.

  More specifically, the housing member 10 has a cylindrical mouth portion 12 and a tubular conduit portion 13 connected to the mouth portion 12, and a fluid passage is formed inside the mouth portion 12 and the conduit portion 13. ing. Although not shown, a screw portion that is screwed into the cap may be provided on the outer periphery of the mouth portion 12.

  As shown in FIG. 1, a valve seat portion 11 is provided on the inner peripheral surface of the housing member 10. As shown in FIG. 1, the valve seat portion 11 is configured as a stepped portion protruding from the inner periphery of the housing member 10.

  In addition, the structure of the valve seat part 11 is not restricted to this. For example, the inner diameter of the mouth portion 12 may be larger than the inner diameter of the conduit portion 13, and a portion where the mouth portion 12 and the conduit portion 13 are connected may be used as the valve seat portion 11.

  The valve seat portion 11 has a seat surface 11a on which the valve body 21 is seated. As shown in FIG. 1, the sheet surface 11 a is configured as a mortar-shaped slope, but is not limited thereto. That is, the seat surface 11a may have a shape that eliminates the gap between the valve body 21 and the valve seat portion 11 when the valve body 21 is seated on the valve seat portion 11.

  When the valve member 20 is loaded into the housing member 10, the valve body 21 is seated on the valve seat portion 11, thereby preventing the valve member 20 from falling off and interrupting the flow of contents and air.

  The conduit portion 13 includes an attachment portion 13a that is fixed to the container body, and a flange portion 13b that projects outward from a portion on the upper side (downstream side of the fluid passage) of the attachment portion 13a.

  The housing member 10 may be configured by combining a plurality of members, but is preferably integrally formed with a synthetic resin such as polyethylene or polypropylene.

  Further, the shape of the housing member 10 is not limited to the cylindrical shape as shown in FIG. 1, and may be, for example, an L shape having a bent portion.

  Next, the configuration of the valve member 20 will be described. As illustrated in FIG. 2B, the valve member 20 includes a valve body 21, a pressing member (biasing member) 22, and a valve driving member 23. More specifically, the valve member 20 according to the present embodiment is a so-called both-end type valve member provided with four pressing members 22.

  The valve member 20 may be configured by combining a plurality of members, but is preferably integrally formed of a synthetic resin such as polyethylene or polypropylene. Moreover, you may integrally mold the valve member 20 including the engaging member 25 mentioned later with a synthetic resin.

  The valve body 21 is seated on the seat surface 11a of the valve seat portion 11 in a sealable manner.

  The pressing member 22 is supported by the housing member 10. As shown in FIG. 1, in this embodiment, the pressing member 22 is fixed to the lower end of the engaging member 25.

  The pressing member 22 presses the valve body 21 against the seat surface 11 a of the valve seat portion 11. In other words, the pressing member 22 urges the valve body 21 toward the seat surface 11 a of the valve seat portion 11.

  In the present embodiment, the valve member 20 has four pressing members 22 that are columnar or plate-shaped. Each pressing member 22 is made of an elastic member. As shown in FIGS. 1 and 2B, one end (upper end) of the pressing member 22 is fixed to the housing member 10 on the downstream side of the fluid passage, and the other end (lower end) is fixed to the peripheral portion of the valve body 21. Yes. More specifically, the pressing member 22 is fixed to the housing member 10 via the engaging member 25.

  Moreover, as shown to FIG. 2B, 24 A of passage holes for allowing the content to pass through at the time of valve opening are provided between each press member 22. As shown in FIG. In order to increase the flow rate of the contents, the engagement member 25 may be provided with a passage hole 24B communicating with the passage hole 24A.

  The pressing member 22 may be configured in a cylindrical shape. In this case, the passage hole 24A is not provided, and the contents are poured through the passage hole 24B from the outside toward the inside.

  As shown in FIG. 2B, the engaging member 25 is a ring-shaped member, and a convex portion 25a is provided on the outer peripheral surface. The engaging member 25 is fixed to the housing member 10 so as not to be detached by fitting the convex portion 25 a with a concave portion provided on the inner periphery of the housing member 10.

  Note that the number and shape (width, thickness, etc.) of the pressing member 22 can be appropriately selected according to desired characteristics and properties of the contents. For example, in order to increase the pressing force (biasing force), the number of pressing members 22 may be increased, the pressing members 22 may be thickened, or the width of the pressing members 22 may be increased. On the other hand, when it is desired to reduce the pressing force (biasing force), the number of pressing members 22 may be reduced, the pressing members 22 may be thinned, or the width of the pressing members 22 may be reduced. Thus, the biasing effect can be adjusted by changing the number and shape of the pressing members 22. About the dimension of the pressing member 22, if a numerical value as an example is given, height will be 5 mm-8 mm, width will be 3 mm-8 mm, and thickness will be 0.2 mm-1 mm.

  Moreover, it is preferable that the pressing member 22 consists of materials other than a metal, for example, synthetic resins (polyethylene, polypropylene, etc.) from a viewpoint of preventing generation | occurrence | production of rust etc.

  The valve drive member 23 drives the valve body 21 against the pressing force of the pressing member 22, and is connected to the valve body 21 as shown in FIG. In the present embodiment, the valve drive member 23 includes a push block 23 a and a shaft 23 b that extends from the push block 23 a toward the valve body 21 and is connected to the valve body 21. The push sesame 23a is sandwiched between a pair of flap portions 32 (described later). The shape of the push sesame 23a is preferably a disc shape, but may be another shape such as a spherical shape.

  In addition, about the cross-sectional shape of the shaft 23b, although it is a cross shape in this embodiment, it may be other shapes, such as not only this but circular and a polygon.

  Next, the operation member 30 that operates the valve drive member 23 will be described. The operation member 30 is attached to the lower end of the housing member 10 as shown in FIGS. 1 and 2A.

  More specifically, the operation member 30 has a pair of flap portions 32 and 32 supported by the housing member 10 via a hinge portion 31. A pair of flap parts 32 and 32 are provided so that it may oppose, and it has the inclined part 32a which clamps and pushes the pushing sesame 23a of the valve drive member 23. A pair of flap parts 32 and 32 are comprised as a tweezers-like thing which can clamp push sesame 23a.

  As shown in FIG. 1, the hinge portion 31 is connected to the lower end of the conduit portion 13 so as to be deformable, and is preferably configured as a thin portion that is thinner than the thickness of the housing member 10 and the flap portion 32.

  In addition, it is preferable that the hinge part 31 has a certain repulsive force with respect to the pressing force applied to the flap part 32, in order to make it easy for the pushed pushing sesame 23a to return to an original position.

  As shown in FIGS. 1 and 2A, the flap portion 32 may be provided with a rib 33 on the inner surface 32 b of the flap portion 32. The rib 33 abuts against the side surface of the push sesame 23a and guides the movement of the push sesame 23a when the push sesame 23a is sandwiched between the pair of flap portions 32, 32. That is, by providing the rib 33 on the flap portion 32, it is possible to limit the movement of the push sesame 23a in the vertical direction in FIG. 1 and improve the operability of the push sesame 23a (valve drive member 23) by the flap portion 32. Can be made.

  As shown in FIG. 1, the valve body 21 is pressed against the seat surface 11 a of the valve seat portion 11 by the pressing member 22 in a state in which the pair of flap portions 32 do not sandwich the push sesame 23 a, so that the valve of the check valve 1 Is closed. The pressing member 22 may be bent in a state where the valve is closed.

  Next, with reference to FIG. 3, the operation of opening the check valve 1 will be described.

  When opening the valve of the check valve 1, the push sesame 23 a is held between the pair of flap portions 32 by pressing the pair of flap portions 32 from both sides. When the pair of flap portions 32 are further pressed, as shown in FIG. 3, the push sesame 23a slides along the inner surface 32b of the flap portion 32 and is pushed upward. The greater the force applied to the flap portion 32, the greater the amount of movement of the push sesame 23a.

  As shown in FIG. 3, the pressing member 23 a is driven by the operation member 30 in this manner, so that the pressing member 22 bends and elastically separates the valve body 21 from the seat surface 11 a of the valve seat portion 11. As a result, a gap is created between the valve body 21 and the seat surface 11 a, and the contents can pass through the fluid passage of the housing member 10.

  The size of the gap between the valve body 21 and the seat surface 11a can be changed according to the force pressing the flap portion 32. Further, by changing the dimensions of the check valve 1, for example, the inner diameter of the housing member 10, the size of the push sesame 23a (the diameter of the disk member, etc.), the length of the shaft 23b, etc., the same pressure is applied. It is also possible to change the size of the gap.

  The pressing member 22 is not limited to being configured as a columnar or plate-shaped member, but may be configured as a spiral spring material such as a coil spring. Even in the case of a coil spring, since the coil spring is provided on the downstream side of the fluid passage as viewed from the valve body 21, the frequency of contact with the contents is low. Therefore, compared with the conventional configuration in which the coil spring is provided on the upstream side of the fluid passage as viewed from the valve body, the adhesion of precipitates is suppressed, so that the pressing function can be prevented from being lowered.

  Next, with reference to FIG. 4, the container 40 with a check valve provided with said check valve 1 is demonstrated. FIG. 4 shows a front view of a container with a check valve according to an embodiment.

  A container with a check valve (spout pouch) 40 includes a container main body (pouch) 41 that contains contents and has a dispensing portion 42, and the check valve 1.

  The container body 41 is preferably a pouch made of a laminated film or the like, and has a thickness of, for example, 30 μm to 200 μm.

  The laminated film has a base material layer made of a synthetic resin such as polyethylene terephthalate, polypropylene, polyamide, or ethylene vinyl alcohol copolymer. In addition, in order to provide gas barrier properties, a plastic film using a metal foil as an intermediate layer, a metal such as aluminum or magnesium, or an oxide such as silicon oxide is deposited, or a plastic film having a gas barrier coat layer is used. It may be used.

  Moreover, the heat-fusion layer is formed in the part heat-sealed among laminated films. Examples of the material for the heat fusion layer include high density polyethylene, medium density polyethylene, low density polyethylene, linear low density polyethylene, and polypropylene.

  Since the attachment portion 13a of the housing member 10 is fused with the heat fusion layer, the material of the attachment portion 13a is preferably the same type of resin as the heat fusion layer.

  As shown in FIG. 4, the check valve 1 is heat-sealed and fixed to the container body 41. More specifically, in the check valve 1, the attachment portion 13 a of the conduit portion 13 is fixed to the container main body 41 so that the mouth portion 12 of the housing member 10 is exposed at the extraction portion 42 of the container main body 41.

  In order to facilitate the operation of the flap portion 32 via the container main body 41, the check valve 1 is fixed to the container main body 41 so that the flap portion 32 is parallel to the main surface 43 of the container main body 41. It is preferred that

  In addition, as long as the valve driving member 23 can be operated by the operation member 30, the container body 41 is not limited to a pouch, and may be a blow bottle, a PET bottle, a paper pack, or the like, regardless of the type of container.

  In order to further improve the operability of the check valve, an operation position display unit 44 that indicates the position of the flap unit 32 may be provided on the outer surface of the container body 41 as shown in FIG. The operation position display unit 44 is, for example, printed on the outer surface of the container body 41 or a member made of paper or cloth attached to the container body 41.

  Next, the usage method of the container 40 with a non-return valve is demonstrated.

  First, when a cap (not shown) is attached to the mouth portion 12, the cap is turned and removed while holding the joint portion (attachment portion 13 a) between the check valve 1 and the container body 41 with one hand. Next, one hand is placed on the side or bottom surface of the container body, and the mouth 12 is directed to the cup to hold the check valve 1 with the other hand and pour the contents.

  And a pair of flap parts 32 and 32 are pushed from both sides via the container main body 41 with the finger | toe of the hand holding the check valve 1. Thereby, the valve body 21 is pushed up against the pressing force of the pressing member 22, a gap is generated between the valve body 21 and the seat surface 11a of the valve seat portion 11, and the contents of the container body are poured into the cup. It is. By adjusting the force that holds down the flap portion 32, the amount and speed of content can be freely changed.

  When a desired amount of content is dispensed, the pressing of the pair of flap portions 32 is stopped. Accordingly, the push sesame 23a is lowered to the original position, and the valve body 21 returns to the state of being seated on the valve seat portion 11, so that the dispensing of the contents is stopped. Of course, external air is not sucked into the container body 41 when the valve is closed.

  As described above, according to the present invention, when the contents are poured out, it is not necessary to apply pressure to the container body itself. For this reason, even if it is a case where a container is a large capacity | capacitance (for example, 1-1.5 liter), the state which orient | assigned the opening part to the cup can be hold | maintained easily.

  Moreover, according to this invention, the amount and the extraction speed of the content can be changed freely by adjusting the force which presses a flap part. For this reason, even when the content is soy sauce and the amount of extraction is small, the amount of extraction can be easily adjusted.

  In addition, according to the present invention, even when the container is difficult to apply an internal pressure even if it is pressed by hand, such as a pouch, the amount and speed of content can be easily changed.

  Further, according to the present invention, since the check valve structure uses the restoring force of the pressing member, it is possible to prevent dripping or inflow of outside air when the contents are poured out.

  Further, since the pressing member 22 is configured as a plate-like or columnar member, the fluid passage in the housing member 10 is not blocked. Therefore, the container with a check valve of the present invention is suitable also when it is necessary to pour out at a certain large flow rate such as a beverage.

  As described above, according to the present invention, the internal pressure of the container is increased by manually applying pressure to the container itself, and the desired check is much easier than in the case of a conventional check valve that opens the valve by the pressure of the contents. The contents can be poured out at the amount and speed of dispensing.

  Next, first to third modifications of the check valve according to the present embodiment will be described. The effects described above can be obtained by any modification.

(First modification)
FIG. 5 shows a partial cross-sectional view of the check valve 2 according to the first modification. The difference between the check valve 2 and the check valve 1 described above is only the configuration of the flap portion. In this modification, as shown in FIG. 5, the flap part 32 does not have the inclined part 32a.

  More specifically, in the check valve 2, the pair of flap portions 32, 32 are arranged so that the pushing sesame 23 a is placed on the inner surfaces 32 b facing the pair of flap portions 32, 32 in a state where the pushing sesame 23 a of the valve drive member 23 is sandwiched. It is comprised so that it may slide along.

  Thus, even if the flap part 32 does not have the slope part 32a, the inner surface 32b of the flap part 32 should just form the slope in the state which clamped the pushing sesame 23a.

(Second modification)
FIG. 6 shows a partial cross-sectional view of the check valve 3 according to the second modification. The main difference between this check valve 3 and the aforementioned check valve 1 is the configuration of the valve drive member. As shown in FIG. 6, the valve drive member according to this modification is configured as a substantially water-drop shaped pusher 27 that does not have the above-described shaft 23 b and has an upper end connected to the valve body 21.

  In this way, the shaft 23b can be omitted by forming the pushing sesame itself into a substantially water drop shape or a long column shape.

  In addition, the shape of the push sesame 27 of FIG. 6 is only an example. That is, the shape of the push sesame 27 may be any shape that allows the push sesame to slide along the opposing inner surfaces 32b of the pair of flap portions 32, 32 holding the push sesame.

(Third Modification)
FIG. 7A shows a partial cross-sectional view of the check valve 4 and the container body 41 according to the third modification. FIG. 7B shows a front view of a check valve-equipped container 40 </ b> A in which the check valve 4 according to this modification is fixed to the dispensing portion 42.

  The main difference between the check valve 4 and the aforementioned check valve 1 is the arrangement of the flap portion 32. That is, in the check valve 1, the flap portion 32 is supported by the housing member 10 via the hinge 31 connected to the lower end of the attachment portion 13 a so as to be located inside the container main body 41. On the other hand, in the check valve 4 of this modification, the flap portion 32 is supported by the housing member 10 so as to be located outside the container body 41. More specifically, as shown in FIG. 7A, the flap portion 32 is supported by the housing member 10 via a hinge 31 that is connected to the flange portion 13b in a deformable manner.

  Thus, even if the flap portion 32 is provided so as to be located outside the container main body 41, the push sesame 23 a can be sandwiched and operated by the flap portion 32 via the soft container main body 41.

  The hinge 31 is not limited to being connected to the flange portion 13b, and may be provided, for example, to be connected to the attachment portion 13a immediately below the flange portion 13b.

  Further, as shown in FIG. 7A, it is preferable to provide a notch 31 a in the hinge 31. Thereby, after the housing member 10 and the container main body 41 are heat-sealed, the flap part 32 can be easily brought down to the container main body 41 side.

  Next, a second embodiment of the present invention will be described with reference to FIGS.

(Second Embodiment)
FIG. 8 shows a partial cross-sectional view of the check valve 5 according to the second embodiment of the present invention with the valve closed. FIG. 9 shows a partial cross-sectional view of the check valve 5 with the valve opened. FIG. 10 is a perspective view of the valve member 20A according to the present embodiment.

  The main difference between the check valve 5 according to the second embodiment and the check valve 1 according to the first embodiment is the configuration of the valve member. That is, in the valve member 20A according to the present embodiment, as shown in FIG. 10, only one columnar or plate-shaped pressing member 26 is provided as the pressing member. That is, the valve member 20A of the present embodiment is a so-called cantilever type valve member.

  One end of the pressing member 26 is fixed to the housing member 10 on the downstream side of the fluid passage, and the other end is fixed to the peripheral edge of the valve body 21. Further, it is preferable that the pressing member 26 can be bent so as to be bent and is not bent buckling like the pressing member 22. Therefore, the pressing member 26 is formed thicker than the pressing member 22 or is made of a hard material, for example. It is not essential that the pressing member 26 does not bend, and it may be bent to some extent.

  Moreover, it is preferable that the shaft 23b of this embodiment consists of material (for example, synthetic resins, such as polyethylene and a polypropylene) which has flexibility and a restoring property.

  When the pair of flap portions 32, 32 are pressed from both sides, as shown in FIG. 9, the push sesame 23a moves upward while the shaft 23b is curved in an S shape, whereby the pressing member 26 is moved to FIG. Curve as shown.

  As the pressing member 26 is curved in this way, the valve body 21 is elastically separated from the seat surface 11a of the valve seat portion 11 in a single-open state. That is, the peripheral edge located on the opposite side of the peripheral edge of the valve body 21 to which one end of the pressing member 26 is fixed is separated from the seat surface 11a. Thereby, the contents can flow through the fluid passage in the housing member 10.

  In the present embodiment, as shown in FIGS. 8 and 10, a recess 25 b is provided on the outer peripheral surface of the engagement member 25. The engaging member 25 is fixed to the housing member 10 so as not to be detached by fitting the concave portion 25b with a convex portion provided on the inner periphery of the housing member 10.

  Further, in the second embodiment, the shaft 23b may be connected to the valve body 21 at a position eccentric from the center of the valve body 21 instead of the center of the valve body 21. By doing in this way, the pressing force with respect to the flap part 32 required in order to open a valve, and the distribution | circulation amount of the contents can be controlled.

  For example, the shaft 23 b is connected to the valve body 21 at a position eccentric to the opposite side of the connection position between the pressing member 26 and the valve body 21. Thereby, the valve body 21 can be separated from the seat surface 11a of the valve seat portion 11 with a smaller pressing force.

  Similarly, the pressing force and the flow amount may be controlled by connecting the shaft 23b to the pushing sesame 23a at a position eccentric from the center of the pushing sesame 23a. Based on the above description, those skilled in the art may be able to conceive additional effects and various modifications of the present invention, but the aspects of the present invention are limited to the individual embodiments and modifications described above. It is not a thing. You may combine suitably the component covering different embodiment and modification. Various additions, modifications, and partial deletions can be made without departing from the concept and spirit of the present invention derived from the contents defined in the claims and equivalents thereof.

1, 2, 3, 4, 5 Check valve 10 Housing member 11 Valve seat portion 11a Seat surface 12 Mouth portion 13 Conduit portion 13a Mounting portion 13b Hook portion 20, 20A Valve member 21 Valve body 22 Press member 23 Valve drive member 23a Pushing sesame 23b Shafts 24A, 24B Passing hole 25 Engaging member 25a Protruding part 25b Recessing part 26 Pressing member 27 Pushing sesame 30 Operating member 31 Hinge part 31a Notch 32 Flap part 32a Inclined part 32b Inner surface 33 (of flap part) Ribs 40, 40A Container 41 with check valve Container body 42 Extraction part 43 Main surface 44 (container body) Operation position display part

Claims (5)

A check valve comprising a housing member having a fluid passage formed therein and a valve member disposed inside the housing member;
A valve seat is provided on the inner peripheral surface of the housing member,
The valve member is seated on the seat surface of the valve seat portion so as to be sealable, a pressing member supported by the housing member and biasing the valve body toward the seat surface of the valve seat portion, A valve drive member connected to the valve body and driving the valve body against the pressing force of the pressing member;
A check valve comprising an operation member configured to be able to operate the valve drive member such that a valve body of the valve member is separated from a seat surface of the valve seat portion. The valve drive member has a push sesame and a shaft that extends from the push sesame toward the valve body and connects to the valve body,
The operation member has a pair of opposed flap portions supported by the housing member via a hinge portion,
The check valve according to claim 1, wherein the pair of flap portions includes an inclined portion that sandwiches and slides the push sesame.   The pressing member is at least two columnar or plate-like elastic members having one end fixed to the housing member on the downstream side of the fluid passage and the other end fixed to the peripheral edge of the valve body. The check valve according to claim 1, wherein the pressing member is bent to elastically separate the valve body from a seat surface of the valve seat portion.   The pressing member is one columnar or plate-like elastic member having one end fixed to the housing member on the downstream side of the fluid passage and the other end fixed to the peripheral edge of the valve body. The check valve according to claim 1 or 2, wherein the check valve is bent to elastically separate the valve body from the seat surface of the valve seat portion in a single-open state. A container body containing contents and having a dispensing portion;
The check valve according to any one of claims 1 to 4, wherein the housing member includes a cylindrical mouth portion and a tubular conduit portion connected to the mouth portion.
With
The check valve is characterized in that at least a part of the conduit portion of the housing member is fixed to the container main body so that the mouth portion of the housing member is exposed at the outlet portion of the container main body. Container with check valve.

Images