WO2023112696A1

WO2023112696A1 - Spout structure, and fluid accommodating container

Info

Publication number: WO2023112696A1
Application number: PCT/JP2022/044374
Authority: WO
Inventors: 敬和尾花
Original assignee: 株式会社資生堂
Priority date: 2021-12-15
Filing date: 2022-12-01
Publication date: 2023-06-22

Abstract

This spout structure is for causing a fluid, which is accommodated in a container body sealed with a closure member, to be discharged. The spout structure comprises: a first cylindrical part, which is positioned in a fixed manner with respect to the closure member; and a second cylindrical part, which is stacked on the first cylindrical part in the axial direction, and can move relative to the first cylindrical part in the axial direction. The second cylindrical part includes a hollow shaft section which is arranged inside the first cylindrical part; the hollow shaft section includes a piercing tool that can pierce the closure member as a result of the relative movement; and when the first cylindrical part makes the relative movement with respect to the second cylindrical part, a tight engagement is established between the first cylindrical part and the second cylindrical part.

Description

Spout structure and fluid container

The present invention relates to a spout structure and a fluid storage container.

A configuration is known in which, by deeply attaching a cap equipped with a piercing tool to a container in which a fluid is contained and whose opening is sealed, the seal can be broken by the piercing tool.

For example, in Cited Document 1, there is a cap that is screwed onto a mouth plug portion 31 of a tube-shaped container 30 to which a blind lid 32 is attached. A cap 10 with a piercer is described that includes a piercer (shaft portion) 16 capable of forming a hole for a discharge passage in the lid 32 .

JP-A-10-230960

In the conventional configuration as described in Patent Document 1, when a hole is formed in the blind lid 32 to break the sealing, the cap 10 is screwed so that the tip of the punch (shaft portion) 16 is attached to the blind lid. It is pushed in until the blind lid 32 is completely broken through after contact (for example, from the state shown in FIG. 5 to the state shown in FIG. 6 of Patent Document 1). However, there is a possibility that the contained fluid may leak outside through the opening formed in the blind lid 32 and further, for example, between the mouth plug portion 31 and the cap 10 when pushed.

In view of the above, an object of one aspect of the present invention is to provide a spout structure that can prevent contents from leaking when the seal is broken at the start of use.

In order to solve the above problems, one aspect of the present invention is a spout structure for discharging a fluid contained in a container body sealed with a closing member, the spout structure being positionally fixed with respect to the closing member. and a second tubular portion that overlaps the first tubular portion in the axial direction and moves relative to the first tubular portion in the axial direction, wherein the second tubular portion is the A hollow shaft portion disposed inside the first cylindrical portion, the hollow shaft portion having a piercing tool that can pierce the closing member by the relative movement, and the second cylindrical portion with respect to the first cylindrical portion. Upon said relative movement of the parts, a tight engagement is formed between said first tubular part and said second tubular part.

According to one aspect, it is possible to provide a spout structure that can prevent the contents from leaking when the seal is broken at the start of use.

FIG. 4 is an exploded view of a spout structure according to an embodiment of the invention; Fig. 3 is a cross-sectional view of the spout structure before use; FIG. 4 is a perspective view showing the spout structure together with the fluid container. Fig. 3 is a cross-sectional view of the spout structure just prior to breaking through the closure member; FIG. 5 is an enlarged view of a sealing portion in FIG. 4; Fig. 3 is a cross-sectional view of the spout structure after breaking through the closure member; FIG. 11 is a cross-sectional view of a spout structure according to a modified example; FIG. 8 is an enlarged view of a sealing portion in FIG. 7; FIG. 11 is a cross-sectional view of a spout structure according to another variant; FIG. 10 is an enlarged view of a sealing portion in FIG. 9;

Hereinafter, the embodiments for carrying out the present invention will be described with reference to the drawings, but the present invention is not limited to the embodiments shown in the specification and drawings. Moreover, in each drawing, the same or corresponding configurations may be denoted by the same or similar reference numerals, and description thereof may be omitted.

1 and 2 show a spout structure 1 according to an embodiment of the present invention. FIG. 1 is an exploded perspective view of the spout structure 1 viewed obliquely from below, and FIG. 2 is an axial cross-sectional view of the spout structure 1. FIG. 3 shows a perspective view showing the spout structure 1 together with the fluid containing portion 40. As shown in FIG.

The pouring spout structure 1 is attached to a fluid containing part 40 in which a fluid is stored (FIG. 3). It is configured to be able to move from the inside of the fluid containing portion 40 to the outside through it. Further, the spout structure 1 may be connected to any desired known dispenser mechanism (such as a pump mechanism), an internal plug such as a pointed internal plug, a nozzle, or the like. As a result, the ejection device can be constructed, and the user can use the ejection device by ejecting the fluid to the outside according to a desired ejection method.

As shown in FIGS. 1 and 2, the spout structure 1 includes a first tubular portion 30 and a second tubular portion that covers the first tubular portion 30 and is relatively movable with respect to the first tubular portion 30 in the axial direction. a part 20; The fluid contained in the fluid containing portion 40 can flow out through the spout structure 1 , more specifically through the opening 27 at the end of the second tubular portion 20 .

As shown in FIG. 3, the fluid containing portion 40 may be a pouch container, for example, a container in which the peripheral edges of two films or sheets are bonded together and the contents are contained in the portion surrounded by the peripheral edges. . However, the fluid containing portion 40 may be of other forms, such as a tubular container formed by injection molding or casting. The material of the film that constitutes the fluid containing portion 40 may be a resin film, a laminate film composed of a plurality of resin films, or a laminate film containing a metal film and a resin film.

The closing member 42 is provided at the mouth of the fluid container 40, that is, at a place where the fluid flows out during use. The closing member 42 is not particularly limited as long as it seals the fluid storage container 10 and can be broken by a piercing tool (described later) at the start of use, but at least the portion to be broken is a film or a sheet preferably in the form of The closing member 42 may be made of the same material as the material of the fluid containing portion 40, or may be made of a different material.

The spout structure 1 according to this embodiment and the fluid accommodating part 40 to which the spout structure 1 is attached may constitute the fluid accommodating container 10 . Although the fluid storage container 10 can be used alone, it can be suitably used as a refill container housed in a separate outer package.

A fluid may be a liquid, such as a liquid or a liquid mixture. Also, the fluid may be, for example, a solution, a dispersion such as emulsion or suspension, or may be in a state called gel, slurry, paste, cream or the like. The fluid may contain powder, may consist primarily of powder, or may consist essentially of or consist of powder. The fluid may be a mixture of the fluid and a gas such as nitrogen, a rare gas, air, etc., and stored in a container in the form of foam. It may be one that is mixed and discharged in the form of foam. Also, the fluid may be in a state of having a viscosity similar to or lower than that of water, or may be in the form of a paste or cream having a viscosity higher than that of water.

Fluids include skin care products such as lotion, milky lotion, face cream, serum, facial cleanser, and cleansing agent, or makeup cosmetics such as basic cosmetics, foundation, makeup base, concealer, liquid eye shadow, liquid cheek, and liquid lip products. Personal care products (daily hygiene products) such as sunscreens, hand soaps, body soaps, hair shampoos, hair dyes, styling agents, hand creams, body creams and body lotions, fragrance products and the like. The fluid is not particularly limited as long as it has fluidity, and in addition to the above cosmetics, it may be foods (for example, seasonings), paints, adhesives, and the like.

As shown in FIGS. 1 and 2 , the spout structure 1 includes a first tubular portion 30 attached to the closing member 42 and a second tubular portion 20 provided to cover the first tubular portion 30 . ing. The extending direction of the axis AL of the spout structure 1 is also the axial direction of the first tubular portion 30 and the axial direction of the second tubular portion 20 . In this specification, the axial side of the spout structure 1 that is closer to the closing member 42 is referred to as the "lower side", and the opposite side, ie, the side that is closer to the opening 27 of the second tubular portion 20 is referred to as the "upper side".

The first tubular portion 30 has a first tubular portion main body 31 , and a flange-shaped bottom portion (base portion) 36 is formed at the lower end of the first tubular portion main body 31 . The lower surface of the bottom portion 36 is in contact with and adhered to the surface of the closing member 42 . As a result, the opening 38 on the lower side of the first tubular portion 30 is covered with the closing member 42 before use is started.

The second cylindrical portion 20 is attached to the first cylindrical portion 30 by screwing. More specifically, a male threaded portion 39 is formed on the outer surface of the first cylindrical portion 30 , and the female threaded portion 29 formed inside the second cylindrical portion 20 is engaged with the male threaded portion 39 . match. The second tubular portion 20 can move relative to the first tubular portion 30 along the axial direction when it is screwed into the first tubular portion 30 .

The second cylinder portion 20 includes a cover cylinder 21 and a hollow shaft portion 22 arranged inside the cover cylinder 21 and connected to the cover cylinder 21 on the upper side. Further, the cover cylinder 21 has a main portion 21a having a female threaded portion 29 formed on the inner surface thereof, and a large diameter portion 21b having an inner diameter and an outer diameter larger than those of the main portion 21a. A space (gap) is formed between the cover tube 21 and the hollow shaft portion 22, and a part of the first tube portion 30 is inserted into this space. Further, the hollow shaft portion 22 is adapted to be inserted inside the first tubular portion 30 .

A passage along the axial direction is formed inside the hollow shaft portion 22 of the second tubular portion 20, and the fluid can be poured out or flowed out of the fluid storage container 10 through this passage. As shown in FIG. 2, the hollow shaft portion 22 has an upper portion 22a with a larger outer diameter and a lower portion 22b with a smaller outer diameter than the upper portion 22a. In addition, the lower surface of the hollow shaft portion 22 is inclined with respect to a surface orthogonal to the axial direction. That is, it is cut at an angle to a plane orthogonal to the axial direction. As a result, a lower tip 22s, which is a tip on the lower side of the hollow shaft portion 22, is formed, and when an arbitrary plane is brought closer, the lower tip 22s can contact the plane at a point or in a small area. It's becoming The hollow shaft portion 22 having such a lower tip 22s functions as a piercing tool that can pierce the closing member 42. As shown in FIG.

In addition, in the second tubular portion 20 , an extended tubular portion 25 is formed above the cover tubular 21 and the hollow shaft portion 22 . Since the axial passage in the extension tube portion 25 communicates with the passage in the hollow shaft portion 22, when the user tries to take out the fluid after the piercing action, the fluid will pass through the hollow shaft. 22 and then through the extension tube 25 and out of the spout structure 1 . In addition, when the dispenser mechanism is connected to the second cylindrical portion 20, the fluid contained in the fluid container 40 is discharged through the spout structure 1 according to the present embodiment and subsequently through the dispenser mechanism. It is discharged out of the device. In the illustrated example, the inner diameter of the extension cylinder portion 25 is larger than the inner diameter of the hollow shaft portion 22 (the inner diameter at the upper end of the hollow shaft portion 22), so that the discharge from the opening 27 is performed smoothly. However, the inner diameter of the extension cylinder portion 25 may be the same as the inner diameter of the hollow shaft portion 22 .

Although the material forming the first cylindrical portion 30 and the second cylindrical portion 20 is not particularly limited, it is preferably resin. Specific examples of resins include polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polystyrene (PS), and polylactic acid (PLA), and combinations thereof. The resins used for the first tubular portion 30 and the second tubular portion 20 may be the same, or may be different resins.

Next, the operation and function of the spout structure 1 according to this embodiment will be described. FIG. 2, already referred to, shows the spout structure 1 in a state prior to the start of use of the fluid. In this state before the start of use, the second tubular portion 20 partially covers the first tubular portion 30, but is not yet screwed together. The hollow shaft portion 22 of the second tubular portion 20 is arranged inside the first tubular portion 30 , but the lower tip 22 s does not reach the closing member 42 . In the illustrated example, the lower end of the upper portion 22a of the hollow shaft portion 22 reaches the upper edge 37 of the first cylindrical portion 30 or slightly overlaps the upper edge 37 in the axial direction.

By rotating the second cylindrical portion 20 relative to the first cylindrical portion 30 from the state shown in FIG. A male screw portion 39 formed on the outer surface of the main body 31 begins to be threadedly engaged. Then, by continuing to rotate the second tubular portion 20 , the second tubular portion 20 moves in the axial direction so as to approach the closing member 42 . FIG. 4 shows a state in which the lower end 22s of the hollow shaft portion 22 of the second tubular portion 20 is in contact with the closing member 42. As shown in FIG.

From the state shown in FIG. 4, when the second cylindrical portion 20 is further rotated to move downward, the hollow shaft portion (breaking tool) 22 of the second cylindrical portion 20 breaks through the closing member 42, and the closing member A notch is made at 42 (Fig. 6). As described above, the lower end portion of the hollow shaft portion 22 does not have a surface orthogonal to the axial direction, but has a surface cut obliquely to the surface orthogonal to the axial direction, and the lower tip 22s is formed. It is easy to concentrate pressure. Therefore, the closing member 42 containing a film can be easily broken through by the hollow shaft portion 22 .

Further, as described above, the hollow shaft portion 22 includes the upper portion 22a and the lower portion 22b having different outer diameters. The breakthrough operation of the closing member 42 by the portion 22 can be made more stable. On the other hand, since the outer diameter of the lower portion 22b, which contacts the closing member 42 and actually performs the initial movement of breaking through the closing member 42, is smaller, the pressure at the time of breaking through can be increased more reliably, which is preferable. The inner diameters of the upper portion 22a and the lower portion 22b are the same, and more specifically, the diameter of the passage for the fluid formed in the hollow shaft portion 22 is constant. However, the inner diameters of the upper portion 22a and the lower portion 22b may change along the way depending on the characteristics of the fluid, the type of pouring, etc., as long as the function of the spout structure 1 for pouring out the fluid is not hindered. .

The state shown in FIG. 6 is a state in which the second tubular portion 20 is rotated and moved downward, and the breakthrough of the closing member 42 by the hollow shaft portion 22 is completed. The notch in the closing member 42 is enlarged and a hole is formed in the closing member 42 .

While the second tubular portion 20 breaks through the closing member 42 and advances downward, that is, when the state shown in FIG. 4 changes to the state shown in FIG. An animal may leak out into the spout structure 1 through a break in the closure member 42 (a hole formed in the closure member 42). For example, while the second tubular portion 20 is relatively rotated with respect to the first tubular portion 30, the user unintentionally moves the fluid storage container 10 itself, or impacts or impacts the fluid storage container 10. Sometimes pressure is applied. As a result, the fluid may enter the spout structure from the fluid containing portion 40 through the closing member 42 . When fluid enters the spout structure, the fluid may flow out or be discharged to the outside through the spout structure in the spout structure of the conventional configuration. For example, it may flow out or be discharged to the outside through the space between the hollow shaft portion of the second tubular portion and the first tubular portion, and further through the threaded portion between the cover tubular portion and the first tubular portion. .

On the other hand, in this embodiment, a tight engagement TS is formed between the second tubular portion 20 and the first tubular portion 30 . Such close engagement between the second tubular portion 20 and the first tubular portion 30 prevents the fluid from passing between the second tubular portion 20 and the first tubular portion 30 to the outside. can. More specifically, the hollow shaft portion 22 (upper portion 22a) of the second cylindrical portion 20 is formed with a convex portion 22p that protrudes from the outer peripheral surface of the hollow shaft portion 22, and the convex portion 22p serves as the first cylindrical portion. 30 and the tight engagement TS is formed (FIG. 4). Thereby, even if the fluid enters the spout structure 1, the flow of the fluid can be blocked at the position where the protrusion 22p is formed. FIG. 5 shows an enlarged view of the portion where the close engagement TS is formed in FIG.

As shown in FIG. 5, the protrusion 22p may have a size that slightly protrudes radially outward from the position of the inner peripheral surface of the first tubular portion 30 when viewed from above or in cross section. As a result, the second tubular portion 20 is press-fitted into the opening of the first tubular portion 30 when the second tubular portion 20 moves downward. The height of the convex portion 22p (the length from the peripheral surface to the top of the convex portion 22p) depends on the material, dimensions, etc. of the second cylindrical portion 20 and/or the first cylindrical portion 30, but the hollow shaft portion 22, preferably 0.01 to 0.5 mm, more preferably 0.03 to 0.3 mm.

The convex portion 22p may be formed continuously over the outer peripheral surface of the hollow shaft portion 22. That is, the convex portion 22p may be an annular convex portion formed along the circumferential direction of the hollow shaft portion 22 . Thereby, leakage of the fluid can be prevented over the circumferential direction. Moreover, it is preferable that the annular convex portion is formed along a plane orthogonal to the axial direction.

When the second cylindrical portion 20 advances in the axial direction with respect to the first cylindrical portion 30 (FIGS. 2, 4 and 6), the timing at which the convex portion 22p and the first cylindrical portion 30 contact, preferably closely The timing of forming the engagement TS may be at least the timing when the hollow shaft portion 22 begins to break through the closing member 42, or may be the timing when the hollow shaft portion 22 (lower tip 22s) contacts the closing member 42 (FIG. 4). ). The timing at which the closing member 42 starts breaking through is determined by the material of the closing member 42 , the shape of the lower tip 22 s, and the diameter of the opening 38 on the lower side of the first tubular portion 30 . The length in the axial direction from the top of the convex portion 22p to the lower end (lower tip 22s) of the hollow shaft portion 22 is the length of the first tubular portion 30, that is, from the upper edge 37 to the lower surface of the bottom portion 36. It may be less than or equal to the length (to the upper surface of the closure member 42), or may be approximately equal or equal to the length of the first tubular portion 30. In addition, by forming the convex portion 22p at a position such that the close engagement TS is formed at the timing when the closing member 42 starts breaking through or just before that, the pressure in the spout structure 1 increases. This is preferable from the viewpoint of smooth operation.

2 and FIGS. 4 to 6, the convex portion 22p is formed integrally with the hollow shaft portion 22 (the second cylindrical portion 20), but forms a close engagement TS with the first cylindrical portion 30. If possible, the convex portion 22p may be formed separately from the hollow shaft portion 22 . Moreover, as shown in FIGS. 2, 4 and 5, the convex portion 22p may be provided at one position when viewed in the axial direction, or may be provided at a plurality of positions in the axial direction.

When the second cylindrical portion 20 moves relative to the first cylindrical portion 30, the downward movement limit of the second cylindrical portion 20 is the connection portion between the cover cylinder 21 and the hollow shaft portion 22 of the second cylindrical portion 20. may be up to contacting the upper edge 37 of the first tubular portion 30 . In other words, the upper edge 37 of the first tubular portion 30 acts as a stopper to prevent the second tubular portion 20 from proceeding further downward. It is preferable that a packing (O-ring) or an elastic ring member 50 is provided on the lower side of the connecting portion between the cover cylinder 21 and the hollow shaft portion 22 of the second cylinder portion 20 (FIGS. 2, 4, 4 and 5). and FIG. 6). In that case, the second tubular portion 20 can move downward until the upper edge 37 of the first tubular portion 30 abuts against the elastic ring member 50 .

A limiting member 35 projecting radially from the outer peripheral surface of the first cylindrical portion 30 may be formed in the first cylindrical portion 30 at a position lower than the male screw portion 39 (see FIGS. 1 to 4). 4, Fig. 6). When the second cylindrical portion 20 moves downward, the restricting member 35 comes into contact with the lower surface of the stepped portion 22c formed between the main portion 21a and the large diameter portion 21b of the cover cylinder 21. At the point of contact, the second tubular portion 20 cannot move further downward. Therefore, the restricting member 35 can also act as a stopper that stops the advancement of the second tubular portion 20 . The upper edge 37 of the first cylindrical portion 30 contacts the elastic ring member 50 before the limit member 35 contacts the lower surface of the stepped portion 22c. can prevent excessive load.

The closing member 42 may be a film-like or sheet-like member formed as part of the fluid containing portion 40 . The closing member 42 may be, for example, a metal thin film sheet, an aluminum laminate sheet, or the like. Also, the film-like or sheet-like closure member 42 may be flat or may be curved and cup-shaped.

FIG. 7 shows a modification of the close engagement TS between the second tubular portion and the first tubular portion. The spout structure 201 shown in FIG. 7 has the same basic configuration as the spout structure 1 according to the example described with reference to FIGS. 2 and 4-6. The spout structure 201 includes a first tubular portion 230 that is positionally fixed with respect to the closing member 42 , and a first tubular portion 230 that is screwed into the first tubular portion 230 and is axially movable relative to the first tubular portion 230 . 2 cylinder part 220 is provided. The points that the second cylindrical portion 220 has a cover cylinder 221 and a hollow shaft portion 222, that the hollow shaft portion 222 can break through the closing member 42, etc. ). However, in the spout structure 201, the tight engagement TS is not formed by the convex portion protruding from the hollow shaft portion and the first cylindrical portion, but by the convex portion protruding from the inner peripheral surface of the first cylindrical portion 230. 231p and the hollow shaft portion 222 of the second tubular portion 220, which is different from the spout structure 1. As shown in FIG. FIG. 8 shows an enlarged view of the tight engagement TS portion of FIG.

The convex portion 231p shown in FIGS. 7 and 8 is formed on the inner peripheral surface of the first cylindrical portion 230 in the circumferential direction in the same manner as the above-described convex portion 22p (FIGS. 2 and 4 to 6) in the spout structure 1. It may be an annular protrusion that is rounded. The protrusion 231p may have a size that slightly protrudes radially inward from the position of the outer peripheral surface of the second cylindrical portion 220 when viewed from above or in cross section. As a result, when the second tubular portion 220 moves downward, the second tubular portion 220 and the first tubular portion 230 are press-fitted into engagement. By forming such a close engagement TS, even if the fluid enters the spout structure 201, the fluid is blocked at the position of the close engagement TS, and the fluid flows out of the spout structure 201. It can prevent leakage to the outside. The axial position of the convex portion 231p (or the top portion of the convex portion 231p) forms close engagement with the outer peripheral surface of the hollow shaft portion 222 at or before the timing when the closing member 42 starts breaking through. It may be located at any position on the first tubular portion 30 as long as it is possible.

FIG. 9 shows another modified example of the tight engagement TS between the second tubular portion and the first tubular portion. The spout structure 301 shown in FIG. 9 has the same basic configuration as the spout structure 1 (FIGS. 2 and 4 to 6) described above. The spout structure 301 includes a first tubular portion 330 that is positionally fixed with respect to the closing member 42 , and a first tubular portion 330 that is screwed into the first tubular portion 330 and is axially movable relative to the first tubular portion 330 . 2 cylinder part 320 is provided. The point that the second cylinder part 320 has the cover cylinder 321 and the hollow shaft part 322, the point that the hollow shaft part 322 can break through the closing member 42, and the like are the same as those of the spout structure 1. However, in the spout structure 301, the tight engagement TS is formed not between the hollow shaft portion 322 and the first tubular portion 330, but between the cover tubular portion 321 and the first tubular portion of the second tubular portion 320. 330 is different from the spout structure 1 . FIG. 10 shows an enlarged view of the tight engagement TS portion of FIG.

More specifically, the convex portion 321p formed on the inner peripheral surface of the main portion 321a of the cover tube 321 of the second tubular portion 320 is engaged with the outer peripheral surface of the first tubular portion 30. . Due to such close engagement TS, the flow of the fluid is suppressed at the position where the convex portion 321p is formed. Even if the fluid enters the spout structure 301 , it is possible to prevent the fluid from leaking out of the spout structure 301 .

Since the male threaded portion 339 is formed on the outer peripheral surface of the first cylindrical portion 30, the convex portion 321p is formed in an area where the male threaded portion 339 is not formed on the outer peripheral surface of the first cylindrical portion 30, for example, a male thread. It is preferable to form it above the region where the portion 339 is formed.

In the example shown in FIGS. 9 and 10, the close engagement TS is formed by the cover tube 321 and the first tube portion 330, so that the force is likely to be applied to the cover tube 321 among the second tube portions 320. Force is less likely to be applied to the shaft portion 322 . Therefore, in this example, when the closing member 42 is broken through, the position of the hollow shaft portion 322 can be prevented from being displaced, pressure can be stably applied to the closing member 42, and the break-through operation becomes smooth. In that respect, it is preferable.

The form of the close engagement between the first tubular portion and the second tubular portion is such that a close engagement capable of preventing outflow of the fluid can be formed between the first tubular portion and the second tubular portion. , is not limited to the above examples. For example, in the spout structure 301 , a convex portion may be formed on the outer peripheral surface of the first cylindrical portion 330 instead of forming the convex portion on the cover cylinder 321 side of the second cylindrical portion 320 .

In addition, in the spout structure (1, 201, 301), the inner peripheral surface of the large diameter portion (21b, 221b, 321b) of the cover cylinder (32, 221, 321) is not the main portion (21a, 221a, 321a). and a restrictive member (35, 235, 351). However, in that case, the large diameter portions (21b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b, 221b) 321b) can be adjusted.

Although specific embodiments have been described above, the present invention is not limited by these embodiments. Also, the features of the embodiments illustrated above can be used in combination.

This application claims priority based on Japanese Patent Application No. 2021-203152 filed on December 15, 2021, the entire contents of which are incorporated herein.

1, 201, 301

spout structure

20, 220, 320 second

cylindrical portion

21, 221, 321 cover cylinder of second

cylindrical portion

21a, 221a, 321a main portion of cover cylinder 21b, 221b, 321b large diameter portion of

cover cylinder

21c, 221c, 321c step portion of

cover cylinder

22, 222, 322 hollow shaft portion of

second cylinder portion

22a, 222a upper portion of

hollow shaft portion

22b, 222b lower portion of

hollow shaft portion

22p, 231p, 321p

convex portion

25, 225, 325 extension cylinder portion of

second cylinder portion

27, 227, 327 opening of

second cylinder portion

29, 229, 329 female screw portion of

second cylinder portion

30, 230, 330

first cylinder portion

31, 231, 331 first cylinder

main body

35, 235, 335 limiting member of first

tubular portion

36, 236, 336 bottom portion of first

tubular portion

37, 237, 337 upper edge of first

tubular portion

38, 238, 338 lower side of first

tubular portion opening

39, 239, 339 male threaded portion of first cylindrical portion 40 fluid containing portion 41 containing portion main body 42 closing member 50 elastic ring member (O-ring)
TS Tight engagement

Claims

A spout structure for discharging a fluid contained in a container sealed with a closing member,
a first tubular portion positionally fixed relative to the closure member;
a second cylindrical portion overlapping the first cylindrical portion in the axial direction and relatively movable in the axial direction with respect to the first cylindrical portion;
The second cylindrical portion has a hollow shaft portion disposed inside the first cylindrical portion, and the hollow shaft portion has a piercing tool capable of piercing the closing member by the relative movement,
A spout arrangement wherein upon said relative movement of said second tubular portion with respect to said first tubular portion, a tight engagement is formed between said first tubular portion and said second tubular portion.
The spout structure according to claim 1, wherein said tight engagement is formed between said first tubular portion and said hollow shaft portion of said second tubular portion.
　The spout structure according to claim 2, wherein an annular projection formed on the outer peripheral surface of the hollow shaft part in the circumferential direction and the inner peripheral surface of the first cylindrical part are closely engaged.
　The spout structure according to claim 2, wherein an annular projection formed on the inner peripheral surface of the first cylindrical part in the circumferential direction and the outer peripheral surface of the hollow shaft part are tightly engaged.
The second tubular portion includes a cover tubular arranged outside the first tubular portion,
2. The spout structure of claim 1, wherein said tight engagement is formed between said first tubular portion and said cover tubular portion of said second tubular portion.
The first tubular portion includes a restricting member that radially protrudes from an outer peripheral surface of the first tubular portion and restricts movement of the second tubular portion toward the closing member;
6. A spout structure according to claim 5, wherein said tight engagement is formed between said restricting member and an inner peripheral surface of said cover tube.
2. A spout according to claim 1, wherein upon said relative movement of said first tubular portion with respect to said second tubular portion, said tight engagement is formed at least when said piercer contacts said closure member. structure.
The second tubular portion includes a cover tubular arranged outside the first tubular portion,
The spout structure according to claim 1, wherein the outer peripheral surface of the first tubular portion and the inner peripheral surface of the cover tube of the second tubular portion are screwed together.
A connecting portion is formed by connecting the hollow shaft portion and the cover cylinder at an end remote from the closing member, an elastic ring member is disposed at the connecting portion, and the first elastic ring member is attached to the elastic ring member. 9. A spout structure according to claim 8, wherein the barrel can be tightly abutted.
The spout structure according to claim 1, wherein the closure member includes a film-like portion.
a spout structure according to any one of claims 1 to 10;
and a container to which the spout structure is attached.