WO2014097682A1

WO2014097682A1 - Check valve, cap with check valve, discharge pump provided with check valve, and fluid vessel

Info

Publication number: WO2014097682A1
Application number: PCT/JP2013/073458
Authority: WO
Inventors: 正典反本
Original assignee: 株式会社テクノクラーツ
Priority date: 2012-12-20
Filing date: 2013-08-31
Publication date: 2014-06-26
Also published as: WO2014097663A1; WO2014097690A1; WO2014098121A1; WO2014097690A8; WO2014098126A1; JP2014139091A

Abstract

Provided are: a check valve that has high reliability with respect to sealing, is easily mass produced, and is compact; a cap with a check valve; a discharge pump provided with the check valve; and a fluid vessel. The check valve (41) has: a base (51) provided with a valve hole (52); and a film (71) that is adhered overlapping the top surface of the base (51) in a manner able to open and close the valve hole (52). Excepting a portion of the top surface of the base (51), the film (71) is superposed in a manner so as to cover the valve hole (52), and is adhered to the covered section in a manner so as to form: a discharge opening (76), by means of the top surface of the base (52) at a portion of the boundary line between the covered section overlapped by the film (71) and the non-covered section not overlapped by the film (71); and a discharge pathway from the valve hole (52) to the discharge opening (76). The configuration is such that it is possible to discharge a fluid from the valve hole (52) to the discharge opening (76) without piercing a hole in the film (71).

Description

Check valve, cap with check valve, jet pump including the check valve, and fluid container

The present invention relates to a check valve composed of a base and a film stacked on the base, a cap with a check valve, a jet pump including the check valve, and a fluid container.

As a container capable of pouring liquid while preventing the oxidization of the liquid contained by preventing the outside air from entering the container main body containing a liquid such as soy sauce, valve holes are formed at positions that do not overlap each other in plan view. An extraction container having a check valve constructed by stacking two thin-film valve bodies is developed (see, for example, Patent Document 1).

A discharge container in which a check valve is formed by adhering a film that opens and closes an opening to the entire upper surface of a flat base having an opening, and the entire circumference of the film excluding the discharge port is sandwiched and bonded by a head member An automatic opening / closing device has also been developed (see, for example, Patent Document 2).

JP 2011-111202 A Japanese Patent Laid-Open No. 8-198300

In the pouring container described in Patent Document 1, it is necessary to process the two valve bodies so that the valve holes do not overlap each other when they have the same dimensions and are overlapped. Moreover, it is necessary to attach these two valve bodies to a container without shifting each other, and mass production is not easy and miniaturization is difficult.

Also in the automatic opening / closing device of the discharge container described in Patent Document 2, the film sandwiched between the base and the head is processed so that the shape matches the upper surface of the base, and is positioned and adhered in the circumferential direction. It is necessary and processing accuracy is required. In addition, this automatic opening and closing device can discharge fluid from the edge of the base, but for example, when attached to a cap as in Patent Document 1, the flow path is blocked and the fluid cannot be discharged. Limited.

An object of the present invention is to provide a check valve, a cap with a check valve, a jet pump provided with the check valve, and a fluid container that are easy to downsize and mass-produce and have high reliability with respect to a seal.

The present invention is a check valve having a base including a valve hole and a film bonded to the upper surface of the base so that the valve hole can be freely opened and closed, the film being an upper surface of the base The base plate is overlapped so as to cover the valve hole except for a part of the base, and at a part of the boundary line between the covering portion where the film is overlapped and the non-covering portion where the film is not overlapped. A discharge port is formed between the valve hole and the discharge port, and the discharge port is bonded to the covering portion so as to form a discharge path from the valve hole to the discharge port. It is a check valve characterized by being capable of discharging fluid.

In the check valve of the present invention, the discharge port is formed by partially overlapping and adhering the film to the upper surface of the base. Since the fluid can be discharged from the valve hole to the discharge port without making a hole in the film, a step of making a hole in the film is unnecessary, and high-precision processing and positioning are also unnecessary. Therefore, the check valve can be easily downsized and mass-produced, and can be manufactured at a low cost. Further, unlike the circular discharge port, this check valve uses the end portion of the film as the discharge port, so that the apparent width of the discharge port in the discharge direction is zero. For this reason, the distance between the valve hole and the discharge port can be increased, and the reliability with respect to the seal is high.

Further, the check valve of the present invention further has a seal surface on a top surface of the check valve where the check valve is attached to a mounted portion to which the check valve is attached, and the valve hole, the discharge port, and the discharge valve. The path is arranged on the inner side of the seal surface, and is attached from the valve hole to the discharge port without forming a hole in the film in a state of being attached to the attachment portion through the entire circumference of the seal surface. It is characterized by being capable of discharging.

According to the present invention, since the valve hole, the discharge port, and the discharge path are located on the inner side (center side) than the seal surface, even when the check valve is attached to the mounted portion so as to surround them, The fluid can be discharged without making a hole in the film.

In the present invention, the film is bonded to the base at least at the same position as the sealing surface.

According to the present invention, since the film is bonded to the base at least at the same position as the seal surface, it is possible to easily and reliably bond (weld) the check valve to the mounted portion. .

The check valve of the present invention further includes a spacer having a certain thickness and adhered to the upper surface of the check valve at the same position as the seal surface, and the mounted portion is interposed via the spacer instead of the seal surface. It is attached to.

The check valve of the present invention further has a constant thickness, includes a spacer bonded to the upper surface of the check valve at the same position as the seal surface, and is attached to the attached portion via the spacer instead of the seal surface. Even when the attached portion is flat, the opening and closing allowance of the film can be reliably ensured. Such a check valve can be used for many purposes.

In the present invention, the base is made of a material that absorbs laser, the film is made of a material that transmits laser, and the base and the film are welded by laser welding. It is characterized by being.

According to the present invention, since laser welding can be used for adhesion between the base and the film, mass production is further facilitated.

The present invention also includes the check valve and a cap to which the check valve is attached. The cap has a top tube shape, and has a spout that discharges the fluid discharged from the discharge port at the top. A cap provided with a connecting means for connecting to a mouth portion of a container body containing fluid in a cylinder portion, and a sealing means for sealing the mouth portion of the container body over the entire circumference on a ceiling surface, The cap is provided with a check valve-cap with a check valve provided on the inner side of the sealing means on the ceiling surface as an attached portion to which the check valve is attached. It is.

According to the present invention, the check valve of the present invention can be easily attached to a cap used for a dispensing container or the like, mass production of the cap with the check valve is easy, and the cap with the check valve can be manufactured at low cost. Can be offered at.

In addition, the present invention is attached to the mouth portion of the container main body that contains the fluid, and has a fluid suction port, a jet path, and a jet port. The piston sucks the fluid from the suction port and ejects the fluid from the jet port. It is an ejection pump, Comprising: It is an ejection pump characterized by providing one or more said check valves in any one or more places among the said suction inlet, the said ejection path | route, or the said ejection outlet.

Further, the present invention is a fluid container including the check valve, the cap with the check valve, or the ejection pump.

The check valve of the present invention is easy to process and position and is suitable for mass production and miniaturization. Further, the check valve of the present invention can increase the distance between the valve hole and the discharge port, and is highly reliable for the seal. Further, the check valve of the present invention can be easily attached to the cap, jet pump and fluid container of the existing fluid container, and the cap with the check valve, the jet pump including the check valve of the present invention, and the fluid container are also inexpensive. Can be mass-produced.

It is principal part sectional drawing of the extraction container 1 of 1st Embodiment of this invention. It is a figure for demonstrating the structure of the non-return valve 41 of the extraction container 1 of FIG. It is a figure which shows the modification of the non-return valve of this invention. It is a figure which shows the modification of the non-return valve of this invention. It is principal part sectional drawing of the extraction container 2 of 2nd Embodiment of this invention. It is principal part sectional drawing of the extraction container 3 of 3rd Embodiment of this invention. It is a figure which shows the structure of the non-return valve 4 with a cover of 4th Embodiment of this invention. It is sectional drawing of the pump container 5 of 5th Embodiment of this invention.

FIG. 1 is a cross-sectional view of an essential part of a dispensing container 1 according to the first embodiment of the present invention. FIG. 2 is a view for explaining the configuration of the check valve 41 of the dispensing container 1 of FIG. The dispensing container 1 according to the first embodiment of the present invention is a fluid container that contains a fluid, and includes a container body 11 and a cap 21 that is detachably coupled to a mouth portion 15 of the container body 11. A check valve 41 including a base 51 and a film 71 is provided. This prevents intrusion of an external fluid such as air into the container body 11 and prevents the contents contained therein from being oxidized or corroded.

The fluid container means a general container that can contain fluid and discharge the contained fluid, and is not limited to a specific configuration and structure.

The container body 11 is provided with a mouth 15 serving as a fluid inlet / outlet at the tip of a rounded shoulder as seen in a plastic bottle container. A male screw 16 to which the cap 21 is screwed is provided on the outer peripheral surface of the mouth portion 15 in the same manner as in a plastic bottle container or the like. Here, the container body with the mouth 15 provided at the tip of the shoulder is shown, but it is possible to use a container body according to the contents, and the shape and structure are as described above. It is not limited.

Further, a container body (not shown) having a bellows in which the inside of the container body is forcibly depressurized by the shape restoration property described in Japanese Patent Application No. 2012-101940 filed by the applicant of the present application, and further disclosed in JP 2011-230840 A A wide range of container bodies such as a double-structured container body (not shown) as described can be used. In addition, in the pump container 5 of 5th Embodiment mentioned later, the container main body 12 which combined these is used, You may use this for the extraction | pouring container 1 of this embodiment. Further, a liquid paper container provided with a folding line that shrinks while the contents described in PCT / JP2013 / 065781 filed by the applicant of the present application are extracted can be suitably used.

The material of the container body 11 is not limited to a specific material. Depending on the contents to be stored, thermal stability, prevention of deterioration by ultraviolet rays, prevention of charging, and the like are required. In such a case, the container body may be formed using a material suitable for the required specifications as appropriate.

The contents that can be accommodated in the container body 11 are not limited to a specific fluid, and can contain and dispense a wide variety of fluids. The contents include a relatively low viscosity liquid such as soy sauce, a viscous fluid such as mayonnaise, a gas such as sampling gas, a granular material such as wheat flour, a slurry solution, and a suspension in which solids are suspended in the liquid. Examples include turbid solutions.

The cap 21 has a top cylindrical shape having a spout 23 for pouring the contents at the top 22 and is made of a synthetic resin material. However, the material of the cap 21 is not limited to a specific material, and examples of the material include synthetic resin, metal, glass, carbon, sintered material, and wood. These composite materials, vapor deposition, A material whose surface is coated with metal by coating, plating, metal foil, or the like may be used, and it can be appropriately selected and used according to the application, contents, and the like.

The shape of the spout 23 of the cap 21 is not limited to a specific shape, and may be, for example, a cylindrical shape or a rectangular tube shape.

Sealing means 25 is formed on the ceiling surface 24 of the cap 21 over the entire circumference of the inner end of the mouth 15 of the container body 11 for sealing. A step portion 26 serving as an attachment portion is formed in a ring shape from the ceiling surface 24 with a certain thickness over the entire circumference. The shape of the step portion 26 is not limited to a specific shape, and may be a rectangle, a triangle, or the like in plan view. However, the check valve 41 and the check valve 41 are airtight in the entire periphery and are described later. The valve hole 52, the discharge path 75, and the discharge port 76 need to have a shape that can be bonded.

The thickness of the stepped portion 26 is not limited to a specific thickness as long as the opening and closing allowance of the film 71 of the check valve 41 is ensured, but the excessive lift of the film 71 at the time of valve opening is suppressed. Setting the thickness in this manner is preferable because it can prevent the film 71 from being damaged and the sealing performance from being lowered due to residual strain.

A female screw 28 that is screwed into the male screw 16 of the mouth portion 15 of the container body 11 is provided on the inner peripheral surface of the cylindrical portion 27 of the cap 21. In addition, the connection method of the cap 21 and the opening | mouth part 15 of the container main body 11 is not limited to screwing, For example, fitting using a snap fit, adhesion | attachment, etc. may be sufficient. The cap 21 may be provided with a lid (not shown) for sealing the spout 23 so as to be opened and closed via a hinge or the like.

The check valve 41 includes a base 51 having a valve hole 52, and a thin film film 71 that is overlapped and bonded to the base 51 so that the valve hole 52 can be freely opened and closed. A fluid discharge path 75 and a discharge port 76 are formed with the lower surface of the container, and when the valve is opened, the contents of the container body 11 are introduced from the valve hole 52 to flow through the discharge path 75 and discharged from the discharge port 76. Intrusion of external fluid into the main body 11 is prevented.

The base 51 is a disc having a valve hole 52, and examples of the material include synthetic resin materials such as polyethylene, metal, glass, carbon material, sintered material, wood, and the like. It can be formed of a material appropriately selected according to the application, contents, etc., such as a material whose surface is coated with metal by coating, plating, metal foil or the like.

The base 51 has a basic shape that is hard to be deformed. However, the base 51 is more rigid than the film 71, and the check valve 41 is lifted from the base 51 when the check valve 41 is opened. When the valve is closed, the rigidity of the film 71 is not particularly limited as long as the film 71 has rigidity to be in close contact with the base 51. The thickness of the base 51 is not limited to a specific thickness.

In FIG. 2, the number of valve holes 52 is three, but the number of valve holes 52 is not limited, and may be one, two, or four or more. Further, the size of the valve hole 52 is not limited to a specific size. The position of the valve hole 52 should just be a position arrange | positioned inside the step part 26 of the cap 21 which is a to-be-attached part at the time of attachment of the non-return valve 41. FIG. The valve hole 52 is not limited to a circular hole, and may be a slit hole, for example. The number, size, and shape of the valve holes 52 may be appropriately selected according to the viscosity of the contents. However, it is difficult for the film 71 to be wrinkled if a plurality of circular holes having a small diameter are provided.

The positional relationship between the valve hole 52 and the spout 23 of the cap 21 is not limited to a specific positional relationship, but the valve hole 52 is opposite to the spout 23 of the cap 21 across the center of the base 51. When the check valve 41 is attached to the cap 21 so as to be disposed on the side, the air in the container main body 11 mixed during filling of the contents, for example, tilts the dispensing container 1 and dispenses the contents. Since it moves to the valve hole 52 side, it tends to be discharged to the outside, which is preferable.

The film 71 is a thin film, and includes a thin film having flexibility, flexibility and stretchability. Examples of the film include a synthetic resin film such as polyethylene, a stretch film made of synthetic resin, a thin metal film having flexibility and / or flexibility, a carbon film, a glass film, and the like. However, the material is not limited to a specific material, and a material appropriately selected according to use, contents, and the like can be used. A multilayer film of a synthetic resin material that prevents air from entering and exiting and a synthetic resin material that prevents drying due to evaporation of moisture can also be used suitably.

Next, the procedure for bonding the film 71 to the upper surface of the base 51 will be described. Fig.2 (a) is a top view of the non-return valve 41 of the extraction container 1 of FIG. In FIG. 2A, the portion with dots is the film 71, and the portion with diagonal lines is the adhesive portion 65.

The check valve 41 has a seal surface 61 at a position where the check valve 41 is in contact with the attached portion to which the check valve 41 is attached on the upper surface, and is adhered to the stepped portion 26 of the cap 21 as the attached portion via the seal surface 61 in an airtight state. Is done. In the check valve 41 of the present embodiment, the entire periphery of the upper surface peripheral portion becomes the seal surface 61 so as to correspond to the stepped portion 26 of the cap 21 that is the attached portion. In FIG. 2A, the seal surface 61 is a region between a virtual line (two-dot chain line) and the edge of the base 51.

The film 71 is overlaid so as to cover the valve hole 52 except for a part of the upper surface of the base 51. At this time, a region covered with the film 71 on the upper surface of the base 51 is referred to as a covering portion 62, and a region not covered with the film 71 is referred to as a non-covering portion 63.

In the film 71, at least a part of the boundary line 64 between the covering portion 62 and the non-covering portion 63 is positioned inside the seal surface 61 so that a discharge port 76 described later is formed inside the seal surface 61. Are overlaid.

Further, the film 71 forms a discharge port 76 with the upper surface of the base 51 at a part of the boundary line 64 between the covering portion 62 and the non-covering portion 63, and the discharge path 75 extends from the valve hole 52 to the discharge port 76. It is adhered at the covering portion 62 so as to form. At this time, if the region where the film 71 is bonded in the covering portion 62 is the bonding portion 65, and the region where the film 71 is not bonded is the non-bonding portion 66, the non-bonding portion 66 becomes the discharge path 75.

The discharge path 75 is formed in a straight line from the valve hole 52 to the discharge port 76, but is not limited to this. For example, a path such as a branch or an assembly may be formed. What is necessary is just to be able to distribute | circulate the fluid to the discharge outlet 76. FIG.

The valve hole 52 and the discharge port 76 are not limited to a specific positional relationship as long as they do not overlap with each other. However, if the distance from the valve hole 51 to the discharge port 76 is short, the film 71 becomes the base 51. It is preferable to increase the distance from the valve hole 51 to the discharge port 76 because the fluid may flow backward before the check valve closes in close contact with the valve.

Further, it is preferable that the film 71 has at least a covering portion 62 at the same position as the sealing surface 61 adhered thereto. When the sealing surface 61 of the check valve 41 is bonded to the step portion 26 of the cap 21, the bonding is performed in a state where an unbonded film 71 is interposed between the base 51 and the step portion 26 of the cap 21. In addition, the base 51 and the stepped portion 26 of the cap 21 may not be well bonded, which may result in poor adhesion.

The check valve 41 in which the film 71 is bonded to the base 51 in the manner described above, even when bonded to the stepped portion 26 of the cap 21 through the entire periphery of the upper surface peripheral edge (seal surface 61), the film 71 is perforated. The contents can be discharged from the discharge port 76 without being provided.

FIG. 2B is a plan view showing a state in which the film material 79 before cutting is stacked on the base 51. In FIG. 2B, the portion with dots is the film material 79 and the portion with diagonal lines is the adhesive portion 65. The check valve 41, for example, covers the valve hole 52 and has a rectangular film material 79 so that a part of the boundary line 64 between the covering portion 62 and the non-covering portion 63 is located inside the sealing surface 61. Is partially overlapped with the upper surface of the base 51, the film material 79 is adhered to the upper surface of the base 51 so that the discharge path 75 and the discharge port 76 are formed, and the film material 79 is attached along the edge of the base 51. Manufactured by cutting method.

Thus, when the film material 79 is bonded so that the covering portion 62 and the bonding portion 65 include the edge of the base 51, the film material 79 can be cut along the edge of the base 51, so that the manufacturing is easy. It is preferable. A manufacturing method is not limited to this, For example, the film 71 cut | disconnected previously may be piled up on the base 51, and may be adhere | attached. However, in this case, it is necessary to perform positioning so that the film 71 exactly overlaps the covering portion 65. On the other hand, the method of cutting the film material 79 after adhering to the base 51 is preferable because positioning is easy when the film material 79 is stacked and bonded.

The method for adhering the film 71 (film material 79) is not limited to a specific method, and methods such as thermal welding and adhesion using an adhesive can be used in addition to laser welding described later. The same applies to the adhesion between the check valve 41 and the cap 21.

FIG. 2C is a cross-sectional view of the main part showing a state in which the base 51 and the film material 79 are welded by laser welding. For the adhesion between the base 51 and the film material 79, for example, laser welding can be suitably used. When performing laser welding, the base 51 is set on the mounting base 85, the valve hole 52 is covered, and a part of the boundary line 64 between the covering portion 62 and the non-covering portion 63 is larger than the seal surface 61. A rectangular film material 79 is partially overlapped on the upper surface of the base 51 so as to be located on the inner side, the whole is pressed by the glass plate 86, and the laser head is scanned from above the glass plate 86. A laser 88 is irradiated from 87.

The laser 88 passes through the glass plate 86 and the film material 79 and is absorbed by the base 51. When the laser 88 is absorbed, the upper surface (bonding portion 65) of the base 51 generates heat and melts, and the film material 79 is welded. After welding, the check valve 41 can be obtained by irradiating the laser 88 along the edge of the base 51 and cutting the film material 79. When laser welding is used in this way, mass production is further facilitated.

Further, when the base 51 and the film material 79 are welded by laser welding, the film material 79 is welded from a state in which the film material 79 is previously pressed by the glass plate 86, which causes a seal failure of the check valve 41 to the film material 79. It is hard for wrinkles to occur.

When the base 51 and the film material 79 are bonded by laser welding, the base 51 needs to be a material that absorbs the laser 88 and the film material 79 needs to be a material that transmits the laser 88. As such a base 51, for example, a known material that absorbs the laser 88 can be appropriately selected and used in addition to a synthetic resin material such as polyethylene to which carbon black or titanium oxide is added. As the film material 79, for example, a known material that transmits the laser 88 can be appropriately selected and used in addition to a synthetic resin film such as a transparent or translucent polyethylene film.

The mounting table 85 is not limited to a specific shape and material as long as the base 51 can be mounted and positioned.

The glass plate 86 prevents the film material 79 from lifting when performing laser welding, and dissipates heat applied to the film material 79. If excessive heat is applied to the film material 79, the film material 79 may be burned out. However, since the heat is radiated by the glass plate 86, the film material 79 is prevented from being burned out. The glass plate 86 may be cooled with cooling air or cooling water.

The glass plate 86 may be a hard heat-resistant glass plate, for example, but is not limited to a specific material as long as it can transmit laser and prevent the film material 79 from being lifted. Moreover, it is not limited to glass.

Further, instead of or in addition to the pressing means such as the glass plate 86, the film material 79 is sucked from the valve hole 52 of the base 51 using a vacuum pump (not shown) or the like, and the film material 79 is drawn into the base 51. Laser welding can also be performed in a state where adsorbed.

As the laser light source used for laser welding, for example, a known laser light source such as a semiconductor laser, a YAG laser, or a carbon dioxide laser can be appropriately selected and used. The intensity of the laser 88 is adjusted so as to match the material and thickness of the base 51, the film material 79, and the glass plate 86, so that the film material 79 and the glass plate 86 are transmitted without melting, and the base 51 is melted. It needs to be adjusted.

Next, the method of use will be illustrated by taking as an example the case where the pouring container 1 is used as a soy sauce bottle for oxidation prevention. After the soy sauce is stored in the flexible container main body 11, the cap 21 to which the check valve 41 is bonded is screwed into the mouth portion 15 of the container main body 11. The mouth portion 15 of the container body 11 is sealed by the sealing means 25 of the cap 21.

After the cap 21 is screwed, the container body 11 is contracted with the dispensing container 1 facing upward. When the container main body 11 is contracted, the inside of the container main body 11 is pressurized and the film 71 is lifted, a gap is formed between the upper surface of the base 51 and the air remaining in the container main body 11 is discharged. Thereby, the inside of the container body 11 is filled with soy sauce, and the check valve 41 prevents air from entering, so the soy sauce is not oxidized.

When pouring soy sauce, if the pouring container 1 is tilted downward, the soy sauce flows into the discharge path 75 from the valve hole 52, the film 71 is lifted by the liquid pressure of the soy sauce, and a gap is formed on the discharge path 75, Soy sauce is discharged from the discharge port 76 and poured from the spout 23.

The remaining amount of soy sauce is reduced, and the liquid pressure is higher than the adhesion force of the film 71 due to the negative pressure in the container body 11 and the adhesion force of the film 71 due to the capillary suction force of the soy sauce interposed in the gap between the base 51 and the film 71. Is small, the film body 71 can be lifted by forcibly contracting the container body 11 and applying internal pressure, and soy sauce can be poured out. The same applies when the contents are gas.

When the dispensing container 1 is returned upward, the film 71 is quickly applied to the upper surface of the base 51 due to the negative pressure in the container body 11 and the capillary suction force of soy sauce interposed in the gap between the base 51 and the film 71. Close valve close. For this reason, air does not enter the container body 11 after the valve is closed.

As described above, the check valve 41 of the dispensing container 1 according to the first embodiment merely overlaps and adheres the film 71 to the base 51, and does not make a hole in the film 71. Is formed, and the contents can be discharged.

¡It is difficult to make holes in the film without damaging the base after bonding the film to the base, and mass production is difficult. Also, if a hole is drilled before the film is bonded to the base, it is necessary to accurately position the film and the base so that the film hole and the base valve hole do not overlap. Cost is high and miniaturization is difficult.

The check valve 41 of the dispensing container 1 according to the present embodiment does not need to make a hole in the film 71, and does not require high-precision processing or positioning, so that mass production and miniaturization are easy. Unlike the circular discharge port, the check valve 41 uses the end portion of the film 71 as the discharge port 76, so that the apparent width of the discharge port 76 in the discharge direction is zero. For this reason, the distance between the valve hole 52 and the discharge port 76 can be increased, and the reliability of the seal is high. For this reason, the dispensing container 1 capable of preventing the oxidation of the contents can be mass-produced at a low cost.

Further, if the discharge port 76 is arranged so as to be always located inside the step portion 26 of the cap 21, the fluid is always supplied regardless of the positional relationship in the circumferential direction between the check valve 41 and the step portion 26 of the cap 21. Since discharge is possible, positioning in the circumferential direction when the check valve 41 is bonded to the step portion 26 of the cap 21 is not required.

Moreover, in the check valve 41, if wrinkles occur in the film material 79 on the discharge path 75, there is a possibility of causing a sealing failure when the valve is closed. If stress is applied to the film material 79 unevenly and the film material 79 shrinks locally, wrinkles may occur in the film material 79. In the check valve 41 of the present invention, one end of the film material 79 at the boundary line 64 between the covering portion 62 and the non-covering portion 63 is not restrained by the edge of the base 51, and the tension applied to the film material 79 at the one end. Is small and rigid. Therefore, even when stress is applied to the film material 79 when the film material 79 is bonded or when the check valve 41 is used, the film material 79 is likely to shrink at one end (discharge port 76), and the discharge path The film material 79 on 75 is less likely to wrinkle.

In particular, when heat is used for bonding between the base 51 and the film material 79, heat is easily transmitted non-uniformly, and thus stress is easily applied to the film material 79. However, in the check valve 41 of the present invention, the discharge path 41 Since it is difficult for wrinkles to form on the top, the laser welding described above can be preferably used.

3 and 4 are views showing a modification of the check valve of the present invention. FIG. 3A is a plan view of the check valve 41a having a wide range of the discharge path 75a (non-adhered portion 66a). In FIG. 3 (a), the part with dots is the film, and the part with diagonal lines is the bonding part (hereinafter the same in FIGS. 3 (b) to 4 (d)). In the check valve 41 a shown in FIG. 3A, the adhesive portion 65 a of the film 71 coincides with the seal surface 61 in the covering portion 62. Thus, the discharge path (adhesive part and non-adhesive part) of the check valve of the present invention is not limited to a specific range, as long as the discharge path from the valve hole to the discharge port is secured, For example, it may be formed in a gourd shape or the like.

FIG. 3B is a plan view of the check valve 41b in which the discharge port 76b has a wave shape. In the check valve 41b in FIG. 3B, the boundary line 64b between the covering portion 62b and the non-covering portion 63b is wavy. Thus, the shapes of the check valve film and the discharge port of the present invention are not limited to specific shapes.

FIG. 3C is a plan view of a rectangular check valve 41c. In the check valve 41c in FIG. 3C, the base 51c and the film 71c are rectangular. Thus, the shape of the base of the check valve and the film of the present invention is not limited to a specific shape, and may be, for example, a triangle or an ellipse.

FIG. 3D is a plan view of the check valve 41 d in which the seal surface 61 d is located on the inner side of the upper surface peripheral edge portion of the base 51. In FIG. 3D, the seal surface 61d is a region between two rectangular virtual lines (two-dot chain line). The check valve 41 d in FIG. 3D is arranged such that the seal surface 61 d (and the step portion 26 of the cap 21) is along the outer edge of the discharge path 75.

Even in such a case, the check valve of the present invention can discharge fluid if the valve hole, the discharge path, and the discharge port are disposed on the inside of the stepped portion of the cap and can be discharged to the seal surface. And the step part of a cap is not limited to circular. However, when the discharge port overlaps the stepped portion of the cap depending on the direction of adhesion as in the check valve 41d in FIG. 3D, or when the discharge port is positioned outside the stepped portion of the cap, It is necessary to adhere to the step portion of the cap in a state where the outlet is positioned so as to be positioned inside the step portion of the cap.

FIG. 3 (e) is a plan view of a check valve 41e having two boundary lines 64e between the covering portion 62e and the covering portion 63e. In the check valve 41e of FIG. 3 (e), the film 71e is overlapped so that the width of the film 71e is narrow and the non-covering portion 63e is divided into two portions with the covering portion 62e interposed therebetween. As described above, the check valve of the present invention only needs to include at least a valve hole in the covering portion, and the film is stacked on the inner side of the sealing surface so that a discharge path and a discharge port can be formed. It may be divided into

FIG. 3 (f) is a plan view of the check valve 41f in which the discharge path 75f and the discharge port 76f are formed at two locations, respectively. In the check valve 41f of FIG. 3 (f), the film 71f is overlapped on both sides with the central non-covering portion 63f interposed therebetween, and the discharge port 76f is formed at a part of the boundary line 64f between the covering portion 62f and the non-covering portion 63f. And are bonded so that the discharge path 75f is formed symmetrically. Such a check valve 41f is provided with a partition in the container body to store different types of chemicals, and mixes when dispensing, for example, a hair dye that mixes two liquids when used. It can use suitably for the extraction container to take out.

Thus, even when the discharge path 75f and the discharge port 76f are formed in two places, the film 71f can be manufactured by simply bonding the film 71f on the base 51 and cutting along the edge of the base 51. Easy. In the check valve of the present invention, the discharge path and the discharge port may be provided at three or more locations.

FIG. 4A is a plan view of a check valve 41g having an adhesive portion 65g along the discharge path 75. FIG. In the check valve 41g of FIG. 4A, a discharge path 75 is linearly formed from the valve hole 52 to the discharge port 76, and the film 71 is attached to the fixed portion 65g along the edge of the discharge path 75. The base 51 is bonded. When the film 71 is bonded in this manner, the bonding time can be shortened as compared with the check valve 41 of the dispensing container 1 of the first embodiment. However, when the entire periphery of the upper peripheral surface of the check valve 41g is bonded to the stepped portion 26 of the cap 21 as the sealing surface 61, the film 71 that is not bonded to the base 51 is sandwiched through the non-bonded portion 66g. Therefore, it is necessary to firmly bond the stepped portion 26 and the base 51 so as not to cause a bonding failure.

FIG. 4B is a plan view of the check valve 41 h in which the film 71 h is disposed inside the seal surface 61. In the check valve 41h in FIG. 4B, a discharge path 75 is formed linearly from the valve hole 52 to the discharge port 76, and the film 71h is attached to the fixed portion 65h along the edge of the discharge path 75. Bonded to the base 51, the film 71h is cut along the edge of the bonding portion 65h.

When the film 71h is bonded in this way, the bonding time can be shortened and the amount of film used can be reduced as compared with the check valve 41 of the dispensing container 1 of the first embodiment. Even when the entire periphery of the upper surface of the check valve 41h is adhered to the stepped portion 26 of the cap 21 as the sealing surface 61, the base 51 is directly bonded to the stepped portion 26 in the non-covered portion 63h, resulting in poor adhesion. hard. However, when the film 71h is cut on the base 51, care must be taken so that the base 51 is not damaged when the film 71h is cut and the film 71h on the adhesive portion 65h is not damaged.

FIG. 4C is a plan view of the check valve 41 i in which the film 71 i is cut outside the edge of the base 51. In the check valve 41 i in FIG. 4C, the film 71 i is cut outside the edge of the base 51. Thus, the check valve of the present invention does not necessarily need to cut the film along the edge of the base.

FIG. 4D is a plan view of a check valve 41j in which a slit 77 is provided in the film 71j. The check valve 41j in FIG. 4D is provided with a slit 77 in a portion that becomes the discharge port 76 of the film 71j. By providing the slit 77 at the discharge port 76, even when stress is applied to the film 71j non-uniformly, the stress is relieved by the slit 77, so that generation of wrinkles of the film 71j on the discharge path 75 can be prevented. The method for preventing the generation of wrinkles on the film 71j is not limited to the slit 77. For example, several portions that become the discharge ports 76 of the film 71j may be cut out in a triangle.

FIG. 4 (e) is a plan view of a check valve 41k having a vein-like groove 53 on the upper surface of the base 51k. The check valve 41k shown in FIG. 4 (e) includes a vein-like groove 53 for surely applying a capillary suction force on the discharge path 75 on the upper surface of the base 51k.

The vein-shaped groove 53 includes a straight trunk portion 54 and a plurality of branch portions 55 branched from the trunk portion 54, and a plurality of the vein-like grooves 53 are formed in parallel to the discharge path 75 and to the full width of the discharge path 75. Yes. The branch portions 55 are branched from the trunk portion 54 at an angle, and are formed such that the branch portions 55 of the adjacent trunk portions 54 are staggered.

The shape of the groove 53 is not limited to this, but is appropriately determined so that liquid can easily be interposed between the upper surface of the base 51k and the film 71 when the check valve 41k is used. If the depth of the groove 53 is too deep, the liquid cannot be exchanged smoothly, and should not be deeper than necessary.

In the check valve 41k of FIG. 4 (e), a groove 53 that facilitates the liquid to be interposed between the upper surface of the base 51k and the film 71 is formed in a portion that becomes the discharge path 75 on the upper surface of the base 51k. Therefore, the capillary suction force can be reliably exerted, the adhesion between the upper surface of the base 51k and the film 71 can be enhanced, and the sealing performance can be secured more stably.

FIG. 4 (f) is a plan view of a check valve 41l having a groove 56 across the entire width of the discharge path 75 on the upper surface of the base 51l. The check valve 41l shown in FIG. 4 (f) has a groove 56 on the discharge path 75 on the upper surface of the base 51l for ensuring the capillary suction force over the entire width of the discharge path 75.

The depth and width of the groove 56 are appropriately determined so that liquid can always stay in the groove 56 when the check valve 41l is used. However, if the depth of the groove 56 is too deep, the replacement of the liquid is not smoothly performed. Therefore, the depth of the groove 56 is appropriately determined to be a depth at which the liquid always stays and a depth at which the replacement of the liquid is performed smoothly.

In the check valve 41l shown in FIG. 4 (f), the groove 56 that always retains the liquid is formed across the entire width of the discharge path 75 on the upper surface of the base 51l. The adhesion between the upper surface and the film 71 can be improved, and the sealing performance can be stably secured.

In the check valves 41k and 41l shown in FIG. 4 (e) and FIG. 4 (f), a groove is provided on the upper surface of the base so that liquid is easily interposed between the upper surface of the base and the film. In the check valve of the invention, the shape of the groove is not limited to a specific shape, and for example, a groove such as a round mark or an X mark may be provided. Further, the same effect can be obtained by roughening the surface instead of the groove or providing small irregularities on the surface.

FIG. 5 is a cross-sectional view of the main part of the dispensing container 2 according to the second embodiment of the present invention. The same code | symbol is attached | subjected to the structure same as the extraction container 1 of 1st Embodiment shown in FIG. 1, and description is abbreviate | omitted. The dispensing container 2 of the second embodiment has the same basic configuration as the dispensing container 1 of the first embodiment, but includes a spacer 59 instead of the step portion 26 of the cap 21. In addition, since the structure of the container main body 11 and the non-return valve 41 is the same as the extraction container 1 of 1st Embodiment, description is abbreviate | omitted.

The cap 31 of the dispensing container 2 of the second embodiment has no step on the ceiling surface 24 and the inside of the sealing means 25 is flat.

The spacer 59 is a ring-shaped member having a certain thickness. The material of the spacer 59 is not limited to a specific material like the base 51, and an optimal material can be used as appropriate. The upper surface and the lower surface of the spacer 59 serve as a sealing surface with the ceiling surface 24 of the cap 31 and the sealing surface 61 of the check valve 41, and are adhered to these in an airtight state.

Further, the thickness of the spacer 59 is not limited to a specific thickness as long as the opening and closing allowance of the film 71 is secured as in the case of the step portion 26 of the cap 21 of the dispensing container 1 of the first embodiment. It is preferable to set so as to suppress excessive lifting of the film 71 at the time of opening the valve, which can prevent deterioration of the sealing performance due to damage to the film 71 and residual strain. Further, the shape of the spacer 59 is not limited to a specific shape, like the step portion 26 of the cap 21 of the dispensing container 1 of the first embodiment, and may be, for example, a rectangle or a triangle in plan view.

When the dispensing container 2 of the second embodiment is manufactured, the check valve 41 may be bonded to the spacer 59 after the spacer 59 is bonded to the cap 31, or the check valve 41 to which the spacer 59 is bonded in advance. May be bonded to the cap 31 via the upper surface of the spacer 59.

When the spacer 59 is used as in the dispensing container 2 of the second embodiment, the check valve 41 can be easily attached to a cap having a flat ceiling surface 24 where the step portion 26 is not provided, and the film 71 The opening and closing allowance can be ensured. For this reason, the check valve 41 can be easily attached to a cap or the like of a commercially available fluid container, and mass production is easy.

FIG. 6 is a cross-sectional view of the main part of the dispensing container 3 according to the third embodiment of the present invention. The same code | symbol is attached | subjected to the structure same as the extraction container 1 of 1st Embodiment shown in FIG. 1, and description is abbreviate | omitted. The pouring container 3 of the third embodiment has the same basic configuration as the pouring container 1 of the first embodiment, but the direction of the pouring outlet 33 of the cap 32 is different. In addition, since the structure of the container main body 11 and the non-return valve 41 is the same as the extraction container 1 of 1st Embodiment, description is abbreviate | omitted.

In the cap 32 of the dispensing container 3 of the third embodiment, the spout 33 is formed in an overturned L shape at the top 22, and fluid is poured out in the horizontal direction. Thus, the fluid dispensing direction of the dispensing container of the present invention is not limited to a specific direction.

FIG. 7 is a view showing a configuration of a check valve 4 with a cover according to a fourth embodiment of the present invention. 7A is a cross-sectional view of the check valve with cover 4 according to the fourth embodiment of the present invention, and FIG. 7B is a check of the check valve with cover 4 of FIG. 4 is a plan view of the valve 41. FIG. Further, in FIG. 7B, a portion to which dots are attached is a film 71 and a portion to which diagonal lines are attached is an adhesive portion 65. The same code | symbol is attached | subjected to the structure same as the extraction container 1 of 1st Embodiment shown in FIG. 1, and description is abbreviate | omitted. In the check valve with cover 4 of the fourth embodiment, a cover 81 is bonded to the check valve 41 of the dispensing container 1 of the first embodiment.

The cover 81 has a cylindrical shape with a top, and has an opening on a part of the side surface of the cylindrical portion. In the check valve with cover 4, the lower surface of the cylindrical portion of the cover 81, which is a mounted portion, and the seal surface 61 of the check valve 41 are bonded together, and the spout 82 is formed by the opening of the cover 81 and the upper surface of the base 51. Is formed.

Thus, the check valve 41 of the present invention can also be used in a state where a part of the check hole 41, the discharge path 75, and the discharge port 76 are opened without going all around. In addition, such a check valve 4 with a cover includes a mouth of the container body at the lower peripheral edge of the base 51, or a general liquid paper container, and further the contents described in PCT / JP2013 / 065781 filed by the applicant. The container 51 may be attached by adhering to a spout used for a liquid paper container or a pouch container provided with a folding line, which shrinks while the object is poured out. It can also be screwed into the mouth of the main body.

FIG. 8 is a cross-sectional view of the pump container 5 according to the fifth embodiment of the present invention. The same code | symbol is attached | subjected to the structure same as the extraction container 1 of 1st Embodiment shown in FIG. 1, and description is abbreviate | omitted. The pump container 5 according to the fifth embodiment is a pump container including a container main body 12 that stores the contents 10 and a jet pump 91 that jets the contents 10 stored in the container main body 12. The check valve 41 of the dispensing container 1 of the first embodiment is used as the check valve 91.

The container main body 12 is configured by an inner container 13 that stores the contents 10 and contracts as the stored contents 10 decrease, and an outer container 14 that can always stand by itself while holding and holding the inner container 13. The inner container 13 expands and contracts while being accommodated in the outer container 14, but can always stand by the outer container 14.

The inner container 13 is a cylindrical container having a bellows structure, and the bellows expands and contracts as the contents 10 increase and decrease. The inner container 13 is provided with a mouth portion 15 serving as an inlet / outlet of the contents 10 so as to protrude from the upper surface, and a male screw 16 into which an ejection pump 91 is screwed is provided on the outer peripheral surface of the mouth portion 15. . The inner container 13 is not limited to the bellows structure as long as it can be contracted while the contents 10 are reduced.

The material of the inner container 13 is not limited to a specific material. Depending on the contents to be stored, thermal stability, prevention of deterioration by ultraviolet rays, prevention of charging, and the like are required. In such a case, a material suitable for the required specifications may be used as appropriate.

The contents 10 that can be accommodated in the inner container 13 are not limited to specific contents, and the pump container 5 can accommodate and dispense a wide variety of contents. Examples of the contents 10 include a liquid having a relatively low viscosity such as soy sauce, a viscous fluid such as mayonnaise, a gas such as a sampling gas, a slurry solution, and a suspension solution in which a solid content is suspended in the liquid. .

The outer container 14 is a cylindrical container that is slightly larger than the inner container 13, and an opening 17 having a diameter substantially the same as the outer diameter of the mouth portion 15 of the inner container 13 is provided on the upper surface. Thirteen mouth portions 15 are fitted, and the outer peripheral surface of the mouth portion 15 is adhered to hold the inner container 13. The method for holding the inner container 13 is not limited to this. Further, the outer container 14 has a structure capable of taking air into the inside while holding the inner container 13, and is provided with an air hole (not shown), for example.

The outer container 14 is not limited to a specific shape or structure as long as it can accommodate the inner container 13 and can stand on its own. The material of the outer container 14 is preferably a material that does not easily deform when operating the ejection pump 91, but may be a flexible material as long as it can stand on its own and is limited to a specific material. is not.

The jet pump 91 includes a suction unit 101 having a suction port 102, a jet unit 111 having a jet port 112, and a spring 95 for lifting the jet unit 111, and the suction unit 101 is connected to the mouth portion 15 of the inner container 13. The ejection unit 111 is connected to the suction unit 101 so as to be movable up and down with a spring 95 interposed therebetween, and the contents 10 accommodated in the inner container 13 are sucked from the suction port 102 by the piston operation of the ejection unit 111 and from the ejection port 112. Erupts.

The suction unit 101 is a double cylindrical body, and the inside of the inner cylindrical portion 103 serves as an ejection path 110 through which the contents 10 are circulated, and has a suction port 102 at the lower end of the inner cylindrical portion 103. On the outer peripheral surface of the central portion of the portion 103, a cap portion 104 that can be connected to the mouth portion 15 of the container main body 12 in an airtight state is formed in a top-cylindrical shape, and further for locking the ejection unit 111 so as not to come off. A locking portion 105 is formed in a cylindrical shape from the upper surface of the cap portion 104.

A concave step portion 106 is formed on the inner peripheral surface of the lower end of the inner cylindrical portion 103 of the suction unit 101 so that the check valve 41 is fitted, and the check valve 41 is bonded to the step portion 106. A spring receiving portion 107 into which the spring 95 is fitted is formed on the outer peripheral surface of the upper portion of the inner cylindrical portion 103.

On the inner peripheral surface of the cap portion 104 of the suction unit 101, a female screw 108 that is screwed into the male screw 16 of the mouth portion 15 of the container body 12 is formed. The ceiling surface 109 of the cap portion 104 is tapered at the peripheral edge so as to be in line with the mouth portion 15 of the container main body 11 on the entire periphery.

The upper end of the locking part 105 is formed in a shape that can be locked so that the ejection unit 111 does not come off the suction unit 101.

The material of the suction unit 101 is not limited to a specific material. Examples of the material include synthetic resin, metal, glass, carbon, sintered material, and wood. These composite materials, vapor deposition, coating, and plating are exemplified. Further, a material whose surface is coated with a metal foil or the like may be used, and the material can be appropriately selected and used depending on the application, contents and the like.

The ejection unit 111 is a double cylinder connected at the upper part 113, and an ejection port 112 is formed at the upper part 113. In the ejection unit 111, an ejection path 120 is formed in an inverted L shape from the inside of the inner cylindrical portion 114 to the ejection port 112, and the lower end of the inner cylindrical portion 114 serves as the inlet 115 for the contents 10. A check valve 41 is bonded to the lower end surface of the inner cylindrical portion 114.

In the ejection unit 111, the outer diameter of the inner cylindrical portion 114 is substantially the same as the inner diameter of the inner cylindrical portion 103 of the suction unit 101, and the inner diameter of the outer cylindrical portion 116 is substantially the same as the outer diameter of the inner cylindrical portion 103 of the suction unit 101. In the state where the spring 95 is inserted into the spring receiving portion 107 of the suction unit 101, the inner cylindrical portion 114 is inserted into the inner cylindrical portion 103 of the suction unit 101 so as to be vertically movable, and the suction unit 101 is inserted into the outer cylindrical portion 116. The inner cylindrical portion 103 is inserted so as to be movable up and down.

An O-ring 117 that secures the airtightness of the ejection path 110 of the suction unit 101 is attached to the outer peripheral surface near the lower end of the inner cylindrical portion 114 of the ejection unit 111.

At the lower end of the outer cylindrical portion 116 of the ejection unit 111, a stopper 118 that is locked to the locking portion 105 of the suction unit 101 is formed.

The material of the ejection unit 111 is not limited to a specific material like the suction unit 101, and examples of the material include synthetic resin, metal, glass, carbon, sintered material, wood, and the like. A material whose surface is coated with metal by vapor deposition, coating, plating, metal foil, or the like may be used, and it can be appropriately selected and used depending on the application, contents, and the like.

At the spout 112, a spray nozzle 96 for spraying the liquid in a mist is mounted. The spray nozzle 96 is not limited to a specific one, and a known spray nozzle can be appropriately selected and used depending on the content 10 to be sprayed, spraying conditions, and the like. Further, the spray nozzle 96 is not necessarily attached.

The spring 95 has an inner diameter that is substantially the same as the outer diameter of the spring receiving portion 107 of the suction unit 101, and the outer diameter is smaller than the inner diameter of the outer cylindrical portion 116 of the ejection unit 111. The spring 95 is inserted into the spring receiving portion 107 of the suction unit 101 and applies an upward force to the ceiling surface 119 of the outer cylindrical portion 116 of the ejection unit 111. The spring 95 has an elastic force that can push up the ejection unit 111 to a state where the stopper 118 is locked to the upper end of the locking portion 105 of the suction unit 101 in a state where no force is applied to the ejection unit 111 from the outside. Is used.

Next, the usage method will be exemplified by using the pump container 5 as an antioxidant soy saucer. After the soy sauce is received from the mouth portion 15 of the container body 12, the ejection pump 91 is attached to the mouth portion 15. When the cap portion 104 of the ejection pump 91 is firmly tightened and screwed into the mouth portion 15 of the container body 11, the taper portion of the ceiling surface 109 of the cap portion 104 and the tip of the mouth portion 15 of the container body 12 come into contact with each other. The fluid can be prevented from entering and exiting from the contact point.

After the ejection pump 91 is attached, the ejection unit 111 is pushed in, and the air remaining in the inner container 13 of the container body 12 and the ejection path 110 of the suction unit 101 is discharged. Thereby, the inside of the inner container 13 and the inside of the ejection path 110 of the suction unit 101 are filled with soy sauce, and the check valve 41 of the ejection unit 111 prevents intrusion of external air, so that the contained soy sauce is oxidized. There is nothing.

When the soy sauce is ejected, when the ejection unit 111 is pushed in, the volume in the ejection path 110 of the suction unit 101 decreases and the pressure increases, the check valve 41 of the suction unit 101 closes, and the check valve of the ejection unit 111 41 opens, soy sauce in the ejection path 110 of the suction unit 101 passes through the check valve 41 of the ejection unit 111 and is sprayed from the ejection port 112 (spray nozzle 96) through the ejection path 120 of the ejection unit 111. .

When the ejection unit 111 is stopped from being pushed in, the ejection unit 111 is lifted by the elastic force of the spring 95. At this time, the volume in the ejection path 110 of the suction unit 101 is increased and the pressure is reduced, the check valve 41 of the ejection unit 111 is closed, the check valve 41 of the suction unit 101 is opened, and the inside of the inner container 13 is opened. Soy sauce passes through the check valve 41 and fills the ejection path 110 of the suction unit 101. At this time, the inner container 13 is reduced in volume and contracted by the volume of the soy sauce that has flowed into the ejection path 110 of the suction unit 101. When the spraying of soy sauce is repeated, the inner container 13 gradually contracts, but the pump container 5 can always stand by the outer container 13.

While the pump container 5 is in use, the check valve 41 of the ejection unit 111 prevents outside air from entering, so that the soy sauce in the inner container 13 and the ejection path 110 of the suction unit 101 may be oxidized. Absent. In addition, the check valve 41 of the ejection unit 111 is quickly moved to the upper surface of the base 51 by the capillary suction force of soy sauce interposed in the gap between the base 51 and the film 71 in addition to the action of negative pressure when the valve is closed. Since the valve is closely closed, the sealing property is good and air can be reliably prevented from entering.

Thus, the check valve 41 according to the present invention can also be suitably used as a check valve for the ejection pump 91. Note that the pump container 5 of the fifth embodiment is a type of pump container that sprays liquid with a spray nozzle 96, but instead of the spray nozzle 96, for example, a publicly known bubble as described in JP-A-8-230919 is used. It can also be used for a pump container (not shown) that ejects liquid in the form of bubbles by using an ejection mechanism.

As described above, the check valve, the check valve cap, and the check valve according to the present invention using the dispensing

containers

1, 2 and 3, the cover check valve 4, and the pump container 5 according to the first to fifth embodiments. However, the check valve, the cap with the check valve, and the jet pump and the fluid container provided with the check valve according to the present invention are not limited to the above-described embodiments. It can be used by being modified within a range not changing.

Although a plate material is used for the base 51, the present invention is not limited to this, and the upper surface and the lower surface of the base 51 may be provided with unevenness. Further, the sealing surface 61 of the base 51 does not need to be flat, and may be provided with irregularities or the like as long as it can be adhered to the attached portion in an airtight state.

Further, when the upper surface of the base 51 is formed in a dome shape, it is easy to apply a uniform tension to the film 71, and the tension also works in the direction in which the film 71 is brought into close contact with the base 51. Therefore, the sealing performance of the check valve 41 is improved. Improved and preferred.

In the above embodiment, a dispensing container or the like provided with a check valve is shown. However, the check valve is not provided in the above embodiment, for example, in the middle of the flow path, at the end of the flow path, or in the opening of the tank. It can be attached and can be used to separate fluids in spaces where fluids stay or move, such as containers, voids, cavities, tubes, etc., and can be used to control fluid movement in one direction. At least one of the fluids separated by the check valve may be the atmosphere. When the check valve is attached to the end of the flow path or the like, it may be attached via the lower surface of the check valve.

As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will readily consider various changes and modifications within the obvious range by looking at the present specification. Therefore, such changes and modifications are interpreted as being within the scope of the invention defined by the claims.

1, 2, 3 Outlet container 4 Check valve with cover 5 Pump container 10

Contents

11, 12 Container body 15 Port 16

Male thread

21, 31, 32 Cap 22 Top 23 Outlet 24 Ceiling surface 25 Sealing means 26 Step 27 Cylindrical part 28 Female thread 41, 41a, 41b Check valve 41c, 41d, 41e Check valve 41f, 41g, 41h Check valve 41i, 41j, 41k Check valve 41l Check valve 51, 51c, 51k Base 51l Base Base 52 Valve hole 59 Spacer 61, 61d Sealing surface 62, 62b, 62e Covering part 62f Covering part 63, 63b, 63e Uncovered part 63f, 63h Uncovered part 64, 64b, 64e Boundary line 64f Boundary lines 71, 71b, 71e Films 71f, 71h, 71i Films 71j Films 75, 75a, 75f Discharge passages 76, 76b, 76f Discharge port 79 Stretch film 91 Spout pump 102

Suction port

110, 120 Spout route 112 Spout

Claims

A check valve having a base provided with a valve hole and a film adhered to the upper surface of the base so as to be freely opened and closed;
The film is overlapped so as to cover the valve hole except for a part of the upper surface of the base, and a boundary between a covered portion where the film is overlapped and a non-covered portion where the film is not overlapped Forming a discharge port with the upper surface of the base in a part of the line, and further adhered at the covering portion so as to form a discharge path from the valve hole to the discharge port;
A check valve characterized in that fluid can be discharged from the valve hole to the discharge port without forming a hole in the film.
Furthermore, on the upper surface of this check valve, the place where it is attached in an airtight state to the mounted part to which this check valve is attached is the sealing surface,
The valve hole, the discharge port, and the discharge path are disposed on the inner side of the seal surface, and a hole is formed in the film in a state of being attached to the attached portion via the entire circumference of the seal surface. The check valve according to claim 1, wherein fluid can be discharged from the valve hole to the discharge port.
3. The check valve according to claim 1, wherein the film is adhered to the base at least at the same position as the seal surface.
Furthermore, it has a fixed thickness and is provided with a spacer that is bonded to the upper surface of the check valve at the same position as the seal surface, and is attached to the attachment portion via the spacer instead of the seal surface. Item 4. The check valve according to Item 2 or 3.
The base is made of a material that absorbs laser,
The film is made of a material that transmits laser,
The check valve according to any one of claims 1 to 4, wherein the base and the film are welded by laser welding.
A check valve according to any one of claims 1 to 5, and a cap to which the check valve is attached,
The cap has a top tube shape, includes a spout for pouring out the fluid discharged from the discharge port at the top, and includes a connecting means for connecting to the mouth of the container main body that contains the fluid, A cap provided on the ceiling surface with sealing means for sealing the mouth of the container body over the entire circumference,
Further, the cap includes a check valve as a mounted portion to which the check valve is attached, and a step portion to which the check valve can be attached in an airtight state is provided inside the sealing means on the ceiling surface. cap.
A jet pump that is attached to a mouth portion of a container main body that contains fluid, has a fluid suction port, a jet path, and a jet port, sucks fluid from the suction port by a piston operation, and jets the fluid from the jet port. ,
An ejection pump comprising one or more check valves according to any one of claims 1 to 5 at any one or more of the suction port, the ejection path, or the ejection port.
A fluid container comprising the check valve according to any one of claims 1 to 5, the cap with a check valve according to claim 6, or the ejection pump according to claim 7.