Assembly

Abstract

To provide an assembly with improved durability.SOLUTION: An assembly includes a cylindrical spout attached to a container body that defines a storage space, an elastic body provided within the hollow region of the spout, and a movable part that is supported by the elastic body, in response to pressing force, moves from a closed position that closes a flow path passing through the hollow region toward a first direction, which is one axial direction of the spout, to open the flow path and when the pressing force is released, moves in a second direction, which is the opposite direction to the first direction, in response to the elastic force of the elastic body, to return to the closed position. The outer peripheral surface of the spout is formed with an engaging portion that engages with a pump device that discharges the content of the container body, a nozzle, or a cap.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to an assembly. [Background technology]

[0002] Aerosol containers are known that include an inner bag filled with a liquid and a canister containing the inner bag and a gas. The aerosol container is capable of discharging the liquid by gas pressure. Before filling the aerosol container with the liquid, a process may be performed to reduce or eliminate the remaining oxygen in the inner bag. Such a process may involve, for example, repeatedly filling the container with nitrogen and vacuuming it.

[0003] To achieve this process, a component is used that opens the flow path while nitrogen filling and vacuuming are performed and closes the flow path while neither nitrogen filling nor vacuuming is performed. For example, Patent Document 1 discloses a component having a female component with a through hole that connects to the storage space for the contents and a plug that seals the through hole. When a male component for filling and dispensing fluid is inserted into the through hole, the tip of the male component engages with the connecting portion of the plug and pushes the plug out of the through hole. When the male component is pulled out, the plug seals the through hole and is detached from the male component. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-144782 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the component disclosed in Patent Document 1, there is a risk that the plug may be damaged due to repeated insertion and removal of the male component.

[0006] The present invention relates to an assembly with improved durability. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, one aspect of the present invention relates to an assembly comprising: a cylindrical spout portion attached to a container body that forms a storage space; an elastic body provided within a hollow region of the spout portion; and a movable part that is supported by the elastic body and that, in response to a pressing force, moves from a closed position where it closes a flow path that passes through the hollow region toward a first direction that is one side of the axial direction of the spout portion to open the flow path, and when the pressing force is released, moves in a second direction that is the opposite direction to the first direction in response to the elastic force of the elastic body to return to the closed position, wherein an engaging part is formed on the outer peripheral surface of the spout portion to engage with a pump device, nozzle or cap that discharges the contents of the container body. [Effects of the Invention]

[0008] As described above, the present invention provides an assembly with improved durability. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is an explanatory diagram showing the external configuration of a container 10 according to an embodiment of the present invention. [Figure 2] 2 is an explanatory diagram showing a cross-sectional configuration of a pump device 30. FIG. [Figure 3] 2 is an explanatory diagram showing the appearance of a valve spout 40. FIG. [Figure 4] FIG. 2 is an explanatory diagram showing the appearance of a valve unit 50. [Figure 5] 2 is an explanatory diagram showing a cross-sectional configuration of a valve spout 40. FIG. [Figure 6] FIG. 5 is a perspective view of a piston 530. [Figure 7] FIG. 2 is an explanatory diagram showing a state in which the flow path of the valve spout 40 is open. [Figure 8] FIG. 2 is an explanatory diagram showing the cross-sectional structure of the container 10. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this specification and drawings, components having substantially the same functional configurations are designated by the same reference numerals, and redundant explanations will be omitted.

[0011] <Overall container configuration> An embodiment of the present invention relates to a container for storing a liquid material. The overall configuration of a container according to an embodiment of the present invention will be described below with reference to FIG.

[0012] 1 is an explanatory diagram showing the external configuration of a container 10 according to one embodiment of the present invention. As shown in FIG. 1, the container 10 according to one embodiment of the present invention includes a pump device 30, a valve spout 40, and a bag container 80.

[0013] Note that the container 10 may be sold with a cap attached to the valve spout 40 instead of the pump device 30. A user who purchases such a container 10 can use the container 10 by removing the cap from the valve spout 40 and attaching the pump device 30 or a nozzle to the valve spout 40.

[0014] In this specification, the direction toward the bag container 80 as viewed from the pump device 30 is sometimes referred to as a downward direction (the XL direction in FIG. 1) as an example of a first direction, and the direction opposite the downward direction is sometimes referred to as an upward direction (the XU direction in FIG. 1) as an example of a second direction. The upward and downward directions are also directions on one side and the other side of the axial direction of the valve spout 40.

[0015] (Bag container 80) The bag container 80 is an example of a container body that forms a storage space. The bag container 80 is a flexible packaging body, and may be, for example, a film container consisting of a bottom film, a front film, and a back film that are bonded together. A hole that does not communicate with the storage space may be formed near the lower end of the bag container 80. By passing a hook or the like through the hole, the container 10 can be used by being hung from the hook.

[0016] The contents of such a bag container 80 may be a liquid. Examples of liquids include liquids, gels, and pastes. Liquids, gels, and pastes all have fluidity, but liquids do not have a fixed shape, while gels and pastes are semi-solid and may temporarily have a fixed shape. Specifically, the liquid contained in the bag container 80 may be liquid detergent, fabric softener, bleach, shampoo, rinse, conditioner, body soap, cosmetic liquid, hair dye, medicine, liquid seasoning, etc.

[0017] Examples of the bottom film, front film, and back film include, but are not limited to, single-layer or multi-layer films or laminated sheets made of synthetic resins such as polyolefin, polyester, polyamide, or a combination thereof, or laminated sheets to which a metal vapor-deposited layer such as aluminum has been added. For example, each film may contain metal foil to block oxygen.

[0018] (Valve spout 40) The valve spout 40 is an example of an assembly, and is attached to the bag container 80 to form a flow path between the bag container 80 and the pump device 30. The valve spout 40 according to one embodiment of the present invention has a mechanism for opening and closing the flow path. The configuration of such a valve spout 40 will be described in detail below.

[0019] (Pump device 30) The pump device 30 sucks the liquid material from the bag container 80 and discharges the sucked liquid material. As shown in FIG. 1, the pump device 30 has a mounting fixture 310, a liquid suction valve 328, a liquid outflow valve 338, a ring 348, a liquid dome 360, and a discharge port 390. A threaded portion (threaded portion 315 shown in FIG. 2) is formed on the inner peripheral surface of the mounting fixture 310, and this threaded portion threadably engages with a threaded portion (threaded portion 722 shown in FIG. 3) formed on the outer peripheral surface of the valve spout 40. The liquid dome 360 ​​is an example of an elastically deformable lid portion that forms part of a liquid pump chamber that stores the liquid material. The discharge port 390 is an opening that connects to the liquid pump chamber and discharges the liquid material that flows out of the liquid pump chamber. Here, the configuration of the pump device 30 will be described in more detail with reference to FIG. 2.

[0020] Fig. 2 is an explanatory diagram showing the cross-sectional configuration of pump device 30. As shown in Fig. 2, pump device 30 has mounting fixture 310, depression portion 318, cylindrical portion 320, main body portion 330, liquid dome 360, and nozzle 380. As shown in Fig. 2, liquid pump chamber P is formed between main body portion 330 and liquid dome 360, and liquid stored in liquid pump chamber P flows out from liquid pump chamber P toward discharge port 390 via outflow path 333.

[0021] - Mounting fixture 310 2, the mounting fixture 310 has a cylindrical portion 314 and a protruding portion 316. The protruding portion 316 protrudes inward from the upper end of the cylindrical portion 314. A threaded portion 315 is formed on the inner peripheral surface of the cylindrical portion 314.

[0022] -Cylindrical part 320 2, the cylindrical portion 320 has an outer cylindrical portion 324, an inner cylindrical portion 325, a protruding portion 326, and a liquid suction valve 328. A gap is formed between the outer cylindrical portion 324 and the inner cylindrical portion 325, into which the main body portion 330 fits.

[0023] Protruding portion 326 protrudes from the upper end of outer tubular portion 324 toward tubular portion 314 of mounting fixture 310. The outer diameter of protruding portion 326 is larger than the inner diameter of protruding portion 316 of mounting fixture 310. Therefore, by pressing protruding portion 326 against protruding portion 316 of mounting fixture 310, airtightness is achieved inside mounting fixture 310.

[0024] Furthermore, a liquid suction valve 328 is provided in an opening formed at the upper end of inner cylindrical portion 325. Liquid suction valve 328 has a cylindrical base and a plate-shaped valve body. The valve body is connected to one axial end of the base via a connecting portion and is elastically displaceable in the axial direction relative to the base.

[0025] When the internal pressure of main body 330 (liquid pump chamber P) becomes lower than the internal pressure of bag container 80 and the thrust caused by the pressure difference exceeds the elastic force of the connecting portion, the valve element of liquid suction valve 328 moves, opening liquid suction valve 328 and connecting bag container 80 to main body 330. When the internal pressure of main body 330 rises and the thrust caused by the pressure difference falls below the elastic force of the connecting portion, liquid suction valve 328 closes, returning bag container 80 and main body 330 to a state where they are separated by liquid suction valve 328. While the internal pressure of main body 330 exceeds the internal pressure of bag container 80, liquid suction valve 328 remains closed.

[0026] -Pressing part 318 The press-down portion 318 is a cylindrical member. The inner diameter of the hollow region of the press-down portion 318 may be constant. The press-down portion 318 is located inside the cylindrical portion 320 and protrudes downward beyond the lower end of the cylindrical portion 320. An opening 319 is formed near the lower end of the press-down portion 318 in at least a portion of the circumferential direction. The number of openings 319 may be one or more. The press-down portion 318 is an example of an insertion portion that is inserted into a through-hole 517 (described later) of the valve spout 40 and presses against the piston 530.

[0027] -Main body 330 As shown in FIG. 2, the main body portion 330 has a recess 331, an outlet channel 333, and a protrusion 336.

[0028] The recess 331 forms a part of the liquid pump chamber P that stores the liquid that flows in from the bag container 80. An intake port 331h is formed in the recess 331, and the liquid flows into the liquid pump chamber P from the bag container 80 via the intake port 331h and the liquid intake valve 328.

[0029] The outflow path 333 is a flow path through which the liquid flows out from the liquid pump chamber P. An opening on the upstream side of the outflow path 333 is formed in the side wall of the recess 331.

[0030] The protruding portion 336 protrudes forward from a region surrounding the downstream opening of the outflow channel 333. The nozzle 380 fits into the protruding portion 336.

[0031] 2, a liquid outflow valve 338 is provided inside the protrusion 336, between the nozzle 380 and the downstream opening of the outflow channel 333. The liquid outflow valve 338 has a cylindrical base and a plate-shaped valve body. The valve body is connected to one axial end of the base via a connecting part, and is elastically displaceable in the axial direction relative to the base.

[0032] When the internal pressure of the main body 330 (liquid pump chamber P) becomes higher than the internal pressure of the nozzle 380 and the thrust caused by the pressure difference exceeds the elastic force of the connecting portion, the valve element of the liquid outflow valve 338 moves, opening the liquid outflow valve 338 and connecting the nozzle 380 to the main body 330. When the internal pressure of the main body 330 decreases and the thrust caused by the pressure difference falls below the elastic force of the connecting portion, the liquid outflow valve 338 closes, and the nozzle 380 and the main body 330 return to a state in which they are separated by the liquid outflow valve 338. As long as the internal pressure of the main body 330 is lower than the internal pressure of the nozzle 380, the liquid outflow valve 338 remains closed.

[0033] -Liquid Dome 360 The liquid dome 360 ​​covers the opening formed by the recess 331 and forms the liquid pump chamber P together with the recess 331. The liquid dome 360 ​​is an example of a lid and is capable of elastic deformation. In its initial state before elastic deformation, the liquid dome 360 ​​has a dome shape that bulges out on the side opposite the recess 331. The dome shape includes a curved portion obtained by, for example, cutting out a portion of a sphere. The liquid dome 360 ​​may be circular or elliptical in plan view. As shown in FIG. 2, the edge of the liquid dome 360 ​​fits into a groove formed in the main body 330, and the ring 348 fits into the groove from above the edge of the liquid dome 360. This firmly connects the liquid dome 360 ​​to the main body 330.

[0034] A spring 342 is provided between the liquid dome 360 ​​and the recess 331. The spring 342 is an example of an elastic body. One end of the spring 342 abuts against the bottom surface of the recess 331, and the other end of the spring 342 abuts against the top surface of the liquid dome 360. When the user presses the top surface of the liquid dome 360, the spring 342 contracts, and when the user releases the pressure on the top surface of the liquid dome 360, the spring 342 expands due to its elastic force, and the shape of the liquid dome 360 ​​returns to its initial shape.

[0035] -Nozzle 380 Nozzle 380 is attached to main body 330 by fitting into protrusion 336 of main body 330. Nozzle 380 has outlet 390, and discharges the liquid that has flowed into nozzle 380 from liquid pump chamber P via outflow path 333 and liquid outflow valve 338 from outlet 390. Note that, at the time of sale, a nozzle cap that closes outlet 390 may be attached to nozzle 380 to prevent the liquid from being discharged from outlet 390 when liquid dome 360 ​​is pressed down.

[0036] The overall configuration of the container 10 according to one embodiment of the present invention has been described above. One embodiment of the present invention particularly relates to the configuration of the valve spout 40 of the container 10. Below, the background of one embodiment of the present invention will be described first, and then the configuration of the valve spout 40 will be described in detail.

[0037] <Background> There are liquids whose quality or appearance changes when they come into contact with oxygen. When filling such liquids into the bag container 80, an oxygen removal process is carried out before filling the bag container 80 with the liquid to reduce or eliminate the remaining oxygen in the bag container 80. The oxygen removal process is, for example, repeated filling with nitrogen and vacuuming.

[0038] To achieve this oxygen removal process, a member is used that opens the flow path while nitrogen filling and vacuuming are performed, and closes the flow path while neither nitrogen filling nor vacuuming is performed.

[0039] However, with conventional components, there was a risk of the component being damaged or the film being caught during vacuuming.

[0040] Another possible configuration is to attach a member that opens and closes the flow path (hereinafter referred to as the flow path opening / closing member) by screwing it onto the outer periphery of the spout. However, in this configuration, the pump device is attached by screwing further outward from the flow path opening / closing member, which increases the size of the pump device. There is also a concern that the flow path opening / closing member may rotate together with the pump device when it is rotated to attach or detach it.

[0041] Taking the above circumstances into consideration, the inventors of the present invention have come up with the creation of a valve spout 40 according to one embodiment of the present invention. The valve spout 40 according to one embodiment of the present invention achieves improved durability and does not catch on the film that constitutes the bag container 80. Furthermore, in one embodiment of the present invention, there is no co-rotation when attaching or detaching the pump device 30, nozzle, cap, etc. The configuration of such a valve spout 40 will be described in detail below.

[0042] <Configuration of Valve Spout 40> (External configuration) FIG. 3 is an explanatory diagram showing the appearance of the valve spout 40. As shown in FIG. 3, the valve spout 40 has a valve unit 50 and a spout 70. The spout 70, also called a spout portion, has a tubular portion 720 and a flange portion 740. The upper and lower ends of the tubular portion 720 are open. A threaded portion 722, which is an example of an engagement portion, is formed on the outer circumferential surface of the tubular portion 720. The pump device 30 is attached to the valve spout 40 by threading the threaded portion 315 of the pump device 30 into the threaded portion 722. However, the item attached to the valve spout 40 is not limited to the pump device 30. A cap that closes the upper opening of the tubular portion 720, a nozzle, or the like may be attached by threading the threaded portion 722 of the tubular portion 720. The flange portion 740 is a portion that surrounds the outer periphery of the lower end of the tubular portion 720. The outer peripheral surface of the flange portion 740 is joined to the front film and back film of the bag container 80 , thereby fixing the spout 70 to the bag container 80 .

[0043] As shown in FIG. 3, the valve unit 50 has a main body 510 and a cylinder 520 .

[0044] 4 is an explanatory diagram showing the external appearance of the valve unit 50. The main body 510 has a top surface 511, an inserted cylindrical portion 512, and an outer cylindrical portion 515, which is an example of a cylindrical portion. The inserted cylindrical portion 512 protrudes upward from the inside of the top surface 511, and the outer cylindrical portion 515 is formed so as to extend downward from the outer edge of the top surface 511. The inserted cylindrical portion 512 has a through-hole 517 formed therein.

[0045] On the outer peripheral surface of outer cylinder portion 515, tapered surface 515a, first step surface 515b, second step surface 515c, and convex portion 515d are formed.

[0046] Tapered surface 515a has an outer diameter that increases upward. First step surface 515b is formed by extending inward from the large-diameter end (upper end) of tapered surface 515a. Second step surface 515c is located above first step surface 515b and faces first step surface 515b. Protrusion 515d is formed annularly and continuously on the outer peripheral surface of outer tube portion 515.

[0047] Such valve unit 50 can be inserted into spout 70, for example, by driving it in from the upper opening of spout 70. However, valve unit 50 may also be inserted into spout 70 from the lower opening of spout 70. In this case, instead of tapered surface 515a, the outer circumferential surface of outer tube portion 515 may be formed with a tapered surface whose outer diameter increases downward.

[0048] Next, the internal configuration of the valve unit 50 will be described with reference to FIG.

[0049] (Internal structure) 5 is an explanatory diagram showing the cross-sectional configuration of valve spout 40. As shown in FIG. 5, valve unit 50 constituting valve spout 40 has a main body 510, a cylinder 520, a spring 526, a piston 530, and a gasket 540.

[0050] -Main unit 510 The configuration of main body 510 is as described with reference to Fig. 4. Protrusion 515d of main body 510 abuts against the inner circumferential surface of spout 70, as shown in Fig. 5. Therefore, no flow path is formed between the inner circumferential surface of spout 70 and the outer circumferential surface of main body 510.

[0051] Furthermore, first step surface 515b of main body 510 engages with edge 720L that forms the lower opening of spout 70, and second step surface 515c engages with step surface 724 formed on the inside of spout 70. That is, first step surface 515b and second step surface 515c of main body 510 sandwich edge 720L and step surface 724 of spout 70, thereby fixing valve unit 50 to spout 70.

[0052] The relationship between valve unit 50 and spout 70 is not limited to the example shown in FIG. 5. For example, if a stepped surface facing downward is formed on the inside of spout 70, first stepped surface 515b may engage with the stepped surface. Also, second stepped surface 515c may engage with edge 720U that forms the upper opening of spout 70. Furthermore, spout 70 may have a through-hole or a recess formed on its inner circumferential surface. In this case, outer tube portion 515 of main body 510 may have a protrusion that fits into the through-hole or recess. Any of these modes allows valve unit 50 to be fixed to spout 70.

[0053] -Cylinder 520 Cylinder 520 is an example of a cylindrical part having a hollow region. An annular protrusion 522 that protrudes inward is formed on the inner peripheral surface of cylinder 520. A plurality of ribs 524 that are spaced apart from one another in the circumferential direction of the inner circumference of cylinder 520 are formed above annular protrusion 522. Each of the plurality of ribs 524 is formed along the axial direction (up-down direction) of cylinder 520. The number of ribs 524 formed on the inner circumference of cylinder 520 is not particularly limited, and may be six or another number.

[0054] -Spring 526 Spring 526 is an example of an elastic body provided within the hollow region of spout 70 and cylinder 520. The lower end of spring 526 is supported by annular protrusion 522 of cylinder 520. Spring 526 is also sandwiched between multiple ribs 524 formed on the inner circumferential surface of cylinder 520. Spring 526 is expandable and contractible along the axial direction of cylinder 520.

[0055] -Piston 530 Piston 530 is supported by spring 526 and is an example of a movable part that can move up and down along the axial direction of cylinder 520. In FIG. 5, piston 530 abuts against gasket 540. That is, in FIG. 5, piston 530 is located at a closing position that closes the flow path that passes through the hollow region of cylinder 520. Now, with reference to FIG. 6, the configuration of piston 530 will be described in more detail.

[0056] FIG. 6 is a perspective view of piston 530. As shown in FIG. 6, piston 530 has a cylindrical portion 532 and a spring fitting portion 536. A plurality of protrusions 534 are formed on the side surface of cylindrical portion 532 at equal intervals. In the example shown in FIG. 6, six protrusions 534 are formed on the side surface of cylindrical portion 532, but the number of protrusions 534 may be fewer or more. In addition, an annular protrusion 533 is formed on the upper surface of cylindrical portion 532.

[0057] Spring fitting portion 536 is formed to extend downward from columnar portion 532. The outer diameter of spring fitting portion 536 is smaller than the inner diameter of spring 526. Therefore, spring 526 fits onto the outer periphery of spring fitting portion 536 as shown in FIG.

[0058] -Gasket 540 Gasket 540 is a flexible annular member. The annular shape surrounds a certain area, and the shape may be circular or rectangular. Gasket 540 is located between piston 530 and through-hole 517, and is fixed between the upper end of cylinder 520 and main body 510. The inner diameter of gasket 540 may be the same as the diameter of through-hole 517, or may be slightly larger than the diameter of through-hole 517.

[0059] <Oxygen removal treatment> Next, the oxygen removal process using the above-mentioned valve spout 40 will be described with reference to Fig. 7 and the already-mentioned Fig. 5. Note that the oxygen removal process is, as described above, a process of repeatedly filling with nitrogen and vacuuming, for example.

[0060] 5, piston 530 is pressed against gasket 540 by the elastic force of spring 526. As a result, the flow path passing through the hollow region of cylinder 520 is closed by piston 530. With this flow path closed, fluid does not flow into bag container 80, and fluid does not flow out of bag container 80.

[0061] FIG. 7 is an explanatory diagram showing a state in which the flow path of the valve spout 40 is open. In FIG. 7, the nozzle 92 is inserted through the through-hole 517, and the tip of the nozzle 92 presses against the piston 530, forcing the piston 530 downward. This separates the piston 530 from the gasket 540, opening the flow path through the hollow region of the cylinder 520. With the flow path open in this manner, as indicated by the arrows in FIG. 7, nitrogen can be filled into the bag container 80 through the opening 94 formed near the tip of the nozzle 92, the valve spout 40, and the dip tube 90. Furthermore, with the flow path open, a vacuum can be applied to suck out the nitrogen filled in the bag container 80 through the opening 94 formed near the tip of the dip tube 90, the valve spout 40, and the nozzle 92.

[0062] When the nozzle 92 is removed from the through-hole 517 while the flow path is open, the pressing force on the piston 530 is released, and the piston 530 returns to the closed position in contact with the gasket 540 in response to the elastic force of the spring 526. After the oxygen removal process has been performed in this manner, the liquid is filled into the bag container 80 through the opening 94 formed near the tip of the nozzle 92, the valve spout 40, and the dip tube 90, in the same manner as when filling with nitrogen.

[0063] When the pump device 30 is attached to the valve spout 40, as shown in FIG. 8 , the depressing portion 318 of the attachment 310 is inserted into the through-hole 517, and the depressing portion 318 depresses the piston 530. This opens a flow path through the hollow region of the cylinder 520. When the user depresses the liquid dome 360 ​​in this state, the pressure in the liquid pump chamber P increases, and the liquid outflow valve 338 opens, causing the liquid material to flow from the liquid pump chamber P to the discharge port 390 and be discharged from the discharge port 390. When the user releases the pressure on the liquid dome 360, the elastic force of the liquid dome 360 ​​and spring 342 causes the liquid dome 360 ​​to return to its initial shape. During this process, the pressure in the liquid pump chamber P decreases, and the liquid inlet valve 328 opens, allowing the liquid material to flow from the bag container 80 into the liquid pump chamber P via the valve spout 40.

[0064] Note that pressing portion 318 may have a first region and a second region having an outer diameter larger than that of the first region within a region facing the inner wall of inserted cylindrical portion 512. The first region may be located closer to piston 530 than the second region, and the second region may be located on the opposite side, on the edge of through hole 517. The outer diameter of the first region is equal to or smaller than the inner diameter of through hole 517. The outer diameter of the second region may be equal to or larger than the inner diameter of through hole 517 before pressing portion 318 is inserted into through hole 517. More specifically, before pressing portion 318 is inserted into through hole 517, it is desirable that the difference between the outer diameter of the second region and the inner diameter of through hole 517 be 0.3 mm or less.

[0065] According to this configuration, push-down portion 318 and the inner wall of inserted tubular portion 512 come into stronger contact with each other in the second region, thereby improving the sealing performance between push-down portion 318 and the inner wall of inserted tubular portion 512. Furthermore, by not making the outer diameter of the second region too large compared to the inner diameter of through hole 517, push-down portion 318 can be inserted into through hole 517 smoothly.

[0066] Furthermore, the total area of ​​openings 319 formed at the lower end of press-down portion 318 may be equal to or greater than the cross-sectional area of ​​the hollow region of press-down portion 318. In this case, the amount of liquid taken in through openings 319 is less likely to become a bottleneck relative to the amount of liquid passing through press-down portion 318, thereby achieving smooth discharge of the liquid.

[0067] <Action and effect> According to the embodiment of the present invention described above, various operational effects can be obtained. For example, in one embodiment of the present invention, the piston 530 rises and falls within the cylinder 520 in response to the elastic force of the spring 526, thereby opening and closing the flow path passing through the hollow region of the cylinder 520. This improves the durability of the flow path against repeated opening and closing. Furthermore, by providing the container 10 having the valve spout 40, the bag container 80, and the pump device 30, the user can dispense the liquid material without removing the attachment 310, preventing air from entering the bag container 80. This allows the liquid material to be used in a fresh state with minimal contact with air.

[0068] Furthermore, because the movement of piston 530 takes place within the range surrounded by cylinder 520, it is possible to prevent piston 530 from catching on the film of bag container 80 during vacuuming. Furthermore, because piston 530 moves up and down in response to the elastic force of spring 526, it is possible for piston 530 to return to the closed position with sufficient certainty after opening the flow path.

[0069] Furthermore, in one embodiment of the present invention, the valve unit 50 is housed inside the spout 70, and the outer peripheral surface of the spout 70 is formed with a threaded portion 722 that threads onto a cap, a nozzle, or the pump device 30. It is also possible to attach a flow path opening / closing member similar to the valve unit 50 to the outer periphery of the spout 70 by threading it. However, in such an embodiment, the pump device 30 or the like is attached by threading further outward from the flow path opening / closing member, which increases the size of the pump device 30 or the like. There is also a concern that the flow path opening / closing member may rotate together with the pump device 30 or the like when the pump device 30 or the like is rotated for attachment or detachment. In contrast, according to one embodiment of the present invention, by housing the valve unit 50 inside the spout 70, the pump device 30 or the like can be made smaller, and the valve unit 50 does not rotate together with the pump device 30.

[0070] Furthermore, valve unit 50 according to one embodiment of the present invention has tapered surface 515a and first step surface 515b formed by extending inward from the large-diameter end of tapered surface 515a. This configuration allows valve unit 50 to be easily inserted into spout 70.

[0071] Furthermore, valve unit 50 according to one embodiment of the present invention has second step surface 515c opposing first step surface 515b. With this configuration, first step surface 515b and second step surface 515c of main body 510 sandwich edge 720L and step surface 724 of spout 70. This fixes valve unit 50 to spout 70.

[0072] Spout 70 may have a through-hole or a recess formed on its inner circumferential surface, in which case outer cylinder portion 515 of main body 510 may have a protrusion that fits into the through-hole or recess. With such a configuration, valve unit 50 can be fixed to spout 70.

[0073] Furthermore, main body 510 of valve unit 50 according to one embodiment of the present invention has protrusion 515d that abuts against the inner circumferential surface of spout 70. Therefore, no flow path is formed between the inner circumferential surface of spout 70 and the outer circumferential surface of main body 510.

[0074] Furthermore, according to one embodiment of the present invention, when the pump device 30 is attached to the valve spout 40, the depressing portion 318 of the attachment 310 is inserted into the through-hole 517, and the depressing portion 318 presses down the piston 530. Therefore, a flow path passing through the hollow region of the cylinder 520 is open, and the pump device 30 can suck the liquid material from the bag container 80 through the flow path and dispense the liquid material. Furthermore, while the dispensing speed of the liquid material decreases when the internal pressure of the aerosol container decreases, the dispensing speed of the liquid material using the pump device 30 used in one embodiment of the present invention can maintain a generally constant dispensing speed regardless of the amount of liquid material remaining in the bag container 80. If the member attached to the valve spout 40 is a nozzle instead of the pump device 30, the nozzle may have an insertion portion that is inserted into the through-hole 517 of the valve spout 40 and presses the piston 530.

[0075] <Supplementary information> Although the preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the technical scope of the present invention is not limited to these examples. It is clear that a person skilled in the art of the present invention can conceive of various modifications or alterations within the scope of the technical idea described in the claims, and it is understood that these also naturally fall within the technical scope of the present invention.

[0076] For example, although the above describes an example in which spout 70, main body 510, and cylinder 520 are configured as separate members, a combination of some or all of spout 70, main body 510, and cylinder 520 may be configured integrally. For example, tubular portion 720 of spout 70 may be configured integrally with top surface portion 511 and inserted tubular portion 512 of main body 510. Similarly, tubular portion 720 of spout 70 may be configured integrally with cylinder 520. Furthermore, main body 510 and cylinder 520 may be configured integrally. [Explanation of symbols]

[0077] 10 containers 30 Pumping equipment 310 Mounting fixture 314 Cylinder part 315 Threaded joint 316 Overhang 318 Pressing down part 319 Aperture 320 Cylindrical part 324 Outer cylinder 325 Inner cylinder 326 Overhang 328 Liquid intake valve 330 Main body 331 recess 331h Inlet 333 Outflow channel 336 Protrusion 338 Liquid Outlet Valve 342 Spring 348 Ring 360 Liquid Dome 380 nozzle 390 Discharge port 40 Valve Spout 50 valve unit 510 main unit 511 Top section 512 Inserted cylinder part 515 Outer cylinder 515a Tapered surface 515b 1st step surface 515c 2nd step surface 515d convex part 517 Through hole 520 cylinder 522 Annular convex part 524 Ribs 526 Spring 530 Piston 532 Cylinder 533 Convex 534 Convex 536 Spring fitting part 540 Gasket 70 spout 720 Cylinder part 720U, 720L rim 722 Threaded joint 724 Step surface 740 flange 80 bag containers 90 Dip Tube 92 nozzles 94 Aperture P liquid pump chamber

Claims

1. a cylindrical spout portion attached to a container body that forms an accommodation space; an elastic body provided in a hollow region of the spout portion; a movable part that is supported by the elastic body, and that moves in response to a pressing force from a closed position where the flow path passing through the hollow region is closed to a first direction that is one side in the axial direction of the outlet part to open the flow path, and that moves in a second direction that is the opposite direction to the first direction in response to the elastic force of the elastic body when the pressing force is released to return to the closed position; Equipped with An assembly in which an engaging portion is formed on the outer peripheral surface of the spout portion to engage with a pump device, a nozzle, or a cap that discharges the contents of the container body.

2. a surface portion having a through hole formed therein is located on the second direction side of the movable portion, the assembly has an annular gasket between the movable portion and the through hole, The assembly of claim 1 , wherein the movable portion abuts the gasket in the closed position.

3. The assembly has a cylindrical portion that is inserted into the spout portion and supported by the spout portion, The assembly according to claim 1 , wherein the elastic body and the movable portion are located inside the cylindrical portion.

4. 4. The assembly according to claim 3, wherein the outer peripheral surface of the cylindrical portion has a tapered surface whose outer diameter increases toward one side in the axial direction, and a first stepped surface formed by extending inward from an end of the tapered surface on the larger diameter side.

5. The assembly according to claim 4 , wherein the first step surface engages with an edge that forms an opening on one side of the spout portion or a step surface that is formed on the inside of the spout portion.

6. an outer peripheral surface of the cylindrical portion has a second step surface facing the first step surface; 6. The assembly according to claim 5, wherein the second stepped surface engages with an edge forming an opening on the other side of the spout portion or another stepped surface formed on the inside of the spout portion.

7. The spout portion has a through hole or a recess formed on an inner circumferential surface, The assembly according to claim 3 , wherein the cylindrical portion has a protrusion that fits into the through hole or the recess.

8. The assembly according to any one of claims 3 to 7, wherein an annular protrusion is formed on an outer peripheral surface of the cylindrical portion, the protrusion abutting against an inner peripheral surface of the spout portion.

9. The assembly according to any one of claims 1 to 7, wherein the elastic body is a spring that expands and contracts along the axial direction of the spout portion.

10. An assembly according to any one of claims 1 to 7; The container body; A container comprising:

11. The container according to claim 10, further comprising the pump device, the nozzle, or the cap, which is attached by engaging with the outer peripheral surface of the spout portion.

12. The container according to claim 11, wherein the pump device or the nozzle has an insertion portion that is inserted into a through hole located on the second direction side of the movable portion and presses the movable portion when attached to the spout portion.

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