Pouring spout structure, and flow substance storage container

Abstract

A spout structure for spouting a flowable substance contained in a container body sealed by a closure member, comprising: a first cylinder portion fixed in position relative to the closure member; and a second cylinder portion coinciding with the first cylinder portion in the axial direction and relatively movable in the axial direction relative to the first cylinder portion, the second cylinder portion having a hollow shaft portion disposed inside the first cylinder portion, the hollow shaft portion having a punch member capable of punching the closure member by the relative movement, a close fit being formed between the first cylinder portion and the second cylinder portion upon the relative movement of the second cylinder portion relative to the first cylinder portion.

Description

Technical Field

[0001] This invention relates to an inlet / outlet structure and a container for containing flow animals. Background Technology

[0002] It is known that a structure with a perforated part is installed deep into a container that contains a stream animal and whose mouth is sealed, and the seal can be broken by using the perforated part.

[0003] For example, in reference 1, a perforated cap 10 is described, which is screwed into the plug portion 31 of a tubular container 30 with a blind cap 32 attached. When the internal solution of the tubular container 30 is first removed to the outside, the perforated part (shaft portion) 16 can form a hole for discharge passage on the blind cap 32.

[0004] [Existing Technical Documents]

[0005] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 10-230960 Summary of the Invention

[0007] [The problem the invention aims to solve]

[0008] In the conventional structure described in Patent Document 1, when a hole is formed in the blind cover 32 and the seal is broken, the cover 10 is pushed in by screwing, abutting the blind cover from the tip of the perforated member (shaft portion) 16 until the blind cover 32 is broken (e.g., from Patent Document 1). Figure 5 state to Figure 6 (State). However, upon insertion, the contained flow animal can leak to the outside through the opening formed in the blind cover 32, and further, for example, through the gap between the plug 31 and the cover 10.

[0009] In view of the above problems, one aspect of the present invention is to provide an injection outlet structure that can prevent leakage of contents when the seal is broken at the start of use.

[0010] [Methods for solving the problem]

[0011] To address the aforementioned problems, one aspect of the present invention is an outlet structure for ejecting a flow contained in a container body sealed by a sealing component, comprising: a first cylindrical portion fixed in position relative to the sealing component; and a second cylindrical portion coinciding with the first cylindrical portion in the axial direction and movable relative to the first cylindrical portion in the axial direction, the second cylindrical portion having a hollow shaft portion disposed inside the first cylindrical portion, the hollow shaft portion having a rupture member capable of rupturing the sealing component by the relative movement, and a tight engagement being formed between the first cylindrical portion and the second cylindrical portion during the relative movement of the second cylindrical portion relative to the first cylindrical portion.

[0012] [The effects of the invention]

[0013] According to one approach, an injection outlet structure can be provided that prevents leakage of contents when the seal is broken at the start of use. Attached Figure Description

[0014] Figure 1 This is an exploded view of the injection outlet structure according to an embodiment of the present invention.

[0015] Figure 2 This is a cross-sectional view of the injection outlet structure before use.

[0016] Figure 3 It is a three-dimensional diagram showing the inlet / outlet structure together with the flow animal containment section.

[0017] Figure 4 This is a cross-sectional view of the injection outlet structure in the state just before the sealing component is about to be breached.

[0018] Figure 5 yes Figure 4 An enlarged view of the sealing part.

[0019] Figure 6 This is a cross-sectional view of the injection outlet structure after the bursting and sealing components have been completed.

[0020] Figure 7 It is a cross-sectional view of the injection outlet structure based on the modified example.

[0021] Figure 8 yes Figure 7 An enlarged view of the sealing part.

[0022] Figure 9 This is a cross-sectional view of the injection outlet structure based on another variation.

[0023] Figure 10 yes Figure 9 An enlarged view of the sealing part. Detailed Implementation

[0024] Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings, but the present invention is not limited to the embodiments shown in the specification and drawings. Furthermore, in the drawings, identical or corresponding structures are labeled with the same or identical symbols, and sometimes descriptions are omitted.

[0025] Figure 1 and Figure 2 This indicates the injection outlet structure 1 according to an embodiment of the present invention. Figure 1 This is an exploded three-dimensional view of the injection outlet structure 1, viewed from a slightly lower angle. Figure 2 This is a cross-sectional view of the injection outlet structure 1 along its axial direction. Additionally, Figure 3 This is a perspective view showing the inlet outlet structure 1 together with the flow animal containment section 40.

[0026] Note that the outlet structure 1 is installed on the flow animal containment section 40, which contains flowing materials. Figure 3 The device is configured such that when a user uses the liquid, the liquid can move outward from the liquid receiving section 40 through the injection outlet structure 1. Furthermore, the injection outlet structure 1 can be connected to a known dispenser mechanism (pump mechanism, etc.), a plug such as a pointed plug, a nozzle, etc. Thus, a dispensing device can be configured so that the user can dispense the liquid from the dispensing device to the outside for use using the liquid in a desired dispensing manner.

[0027] like Figure 1 and Figure 2 As shown, the inlet structure 1 includes a first cylindrical portion 30 and a second cylindrical portion 20. The second cylindrical portion 20 is covered by the first cylindrical portion 30 and is movable relative to the first cylindrical portion 30 in the axial direction. The liquid animals contained in the liquid animal containment section 40 can flow out through the inlet structure 1, and more specifically, through the opening 27 at the end of the second cylindrical portion 20.

[0028] like Figure 3 As shown, the flow animal containment section 40 can be a bag-like container, for example, a container that holds the contents in the portion surrounded by two films or sheets bonded together. However, the flow animal containment section 40 can also be in other forms, such as a tubular container formed by injection molding or casting. The material of the film constituting the flow animal containment section 40 can be a resin film, a laminated film composed of multiple resin films, or a laminated film containing a metal film and a resin film.

[0029] A sealing component 42 is provided at the opening of the liquid animal containment section 40, i.e., the part that allows liquid to flow out during use. The sealing component 42 is any component that seals the liquid animal containment container 10 and can be broken by a rupture member (described later) at the start of use. Its shape is not particularly limited, but it is preferable that at least the broken part is in the form of a thin film or sheet. The sealing component 42 can be formed of the same material as the liquid animal containment section 40, or it can be formed of a different material.

[0030] The outlet structure 1 and the flow animal containment section 40 on which the outlet structure 1 is installed according to this embodiment can constitute a flow animal containment container 10. The flow animal containment container 10 can also be used alone, but it is suitable as a refill container housed in a separate outer casing.

[0031] The liquid material can be a liquid, such as a liquid or a mixture of liquids. Alternatively, the liquid material can be a solution, a dispersion such as an emulsion or suspension, or a substance in the form of a gel, slurry, paste, cream, etc. The liquid material can include powder, or may mainly consist of powder, or may be composed primarily of powder or composed of powder. The liquid material can be a substance that is mixed with gases such as nitrogen, rare gases, or air and contained in a foam-like (foamed) form within a container, or a substance that is mixed with the aforementioned gases and sprayed out in a foam-like form upon ejection. Furthermore, the liquid material can be a substance with a viscosity similar to or lower than that of water, or a paste or ointment-like substance with a viscosity higher than that of water.

[0032] Liquid substances can include skincare products or basic cosmetics such as toners, lotions, creams, serums, facial cleansers, and makeup removers; color cosmetics such as foundations, base makeup, concealers, liquid eyeshadows, liquid blushes, and liquid lipsticks; personal care products (hygiene and daily necessities) such as sunscreens, hand sanitizers, shower gels, shampoos, hair dyes, styling products, hand creams, moisturizers, and lotions; and perfumes. Furthermore, liquid substances can be any substance with a free flow; there are no particular limitations. Besides cosmetics, they can also include food (such as seasonings), paints, and adhesives.

[0033] like Figure 1 and Figure 2 As shown, the injection outlet structure 1 includes a first cylindrical portion 30 mounted on a sealing member 42 and a second cylindrical portion 20 disposed on the first cylindrical portion 30. The extension direction of the axis AL of the injection outlet structure 1 can be either the axial direction of the first cylindrical portion 30 or the axial direction of the second cylindrical portion 20. In this specification, in the axial direction of the injection outlet structure 1, the side closer to the sealing member 42 is referred to as the "lower side", and the opposite side, that is, the side closer to the opening 27 of the second cylindrical portion 20, is referred to as the "upper side".

[0034] The first cylindrical portion 30 has a first cylindrical portion body 31. A flange-shaped bottom (base) 36 is formed at the lower end of the first cylindrical portion body 31. Furthermore, the lower surface of the bottom 36 contacts and is bonded to the surface of the sealing member 42. Thus, in the state before use, the opening 38 on the lower side of the first cylindrical portion 30 is covered by the sealing member 42.

[0035] The second cylindrical portion 20 is screwed onto the first cylindrical portion 30. More specifically, an external thread 39 is formed on the outside of the first cylindrical portion 30, and an internal thread 29 formed on the inside of the second cylindrical portion 20 engages with the external thread 39. When the second cylindrical portion 20 is screwed onto the first cylindrical portion 30, it can move relative to the first cylindrical portion 30 along the axial direction.

[0036] The second cylindrical portion 20 includes a cover cylinder 21 and a hollow shaft portion 22 disposed inside the cover cylinder 21 and connected to the cover cylinder 21 on its upper side. Furthermore, the cover cylinder 21 has a main portion 21a with an internal thread 29 formed on its inner surface, and a large-diameter portion 21b whose inner and outer diameters are both larger than those of the main portion 21a. A space (gap) is formed between the cover cylinder 21 and the hollow shaft portion 22, and a portion of the first cylindrical portion 30 is inserted into this space. The hollow shaft portion 22 is inserted into the inner side of the first cylindrical portion 30.

[0037] A passage along the axial direction is formed inside the hollow shaft portion 22 of the second cylindrical portion 20, through which liquid animals can be injected or discharged from the liquid animal containment container 10 to the outside. Figure 2 As shown, 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. The lower surface of the hollow shaft portion 22 is inclined relative to a surface orthogonal to the axial direction. That is, it is cut off by being inclined relative to a surface orthogonal to the axial direction. Thus, a lower tip 22s is formed on the lower side of the hollow shaft portion 22, which can contact the plane with a point or a small area when it is close to any plane. The hollow shaft portion 22 with such a lower tip 22s acts as a breaking member capable of breaking through the closed member 42.

[0038] Furthermore, in the second cylindrical section 20, an extension cylindrical section 25 is formed on the upper side of the cap cylinder 21 and the hollow shaft section 22. Since the axial passage inside the extension cylindrical section 25 communicates with the passage inside the hollow shaft section 22, when the user attempts to remove the liquid after performing a blasting action, the liquid flows out through the hollow shaft section 22 and then through the extension cylindrical section 25 to the outside of the injection outlet structure 1. Additionally, when a dispenser mechanism is connected to the second cylindrical section 20, the liquid contained in the liquid containing section 40 is ejected to the outside of the ejection device via the injection outlet structure 1 according to this embodiment and then via the dispenser mechanism. In the illustrated example, the inner diameter of the extension cylindrical section 25 is larger than the inner diameter of the hollow shaft section 22 (the inner diameter at the upper end of the hollow shaft section 22), thereby allowing for smooth ejection from the opening 27. However, the inner diameter of the extension cylindrical section 25 can also be the same as the inner diameter of the hollow shaft section 22.

[0039] The materials constituting the first cylindrical section 30 and the second cylindrical section 20 are not particularly limited, but resin is preferred. Specific examples of resins include polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polystyrene (PS), and polylactic acid (PLA), as well as combinations thereof. The resins used in the first cylindrical section 30 and the second cylindrical section 20 may be the same or different resins.

[0040] Next, the operation and function of the injection outlet structure 1 according to this embodiment will be explained. (Referring to previously mentioned...) Figure 2 The diagram shows the state of the inlet structure 1 before the use of the effluent begins. In this state before use, the second cylinder 20 partially covers the first cylinder 30, but is not yet screwed in. Furthermore, although the hollow shaft portion 22 of the second cylinder 20 is disposed within the first cylinder 30, its lower tip 22s does not reach the closing member 42. Additionally, 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 cylinder 30 or slightly overlaps with the upper edge 37 in the axial direction.

[0041] from Figure 2 Starting from the state shown, by rotating the second cylinder 20 relative to the first cylinder 30, the internal thread 29 formed on the inner surface of the main part 21a of the cover cylinder 21 and the external thread 39 formed on the outer surface of the main body 31 of the first cylinder begin to engage. Then, by continuing to rotate the second cylinder 20, the second cylinder 20 moves in the axial direction in a manner close to the closing member 42. Figure 4 This indicates that the lower tip 22s of the hollow shaft portion 22 of the second cylindrical portion 20 is in contact with the closing component 42.

[0042] When from Figure 4 When the state shown is further moved downward by rotating the second cylinder 20, the hollow shaft portion (breaching member) 22 of the second cylinder 20 breaks through the closing member 42, and a cut is formed on the closing member 42. Figure 6 As described above, the lower end of the hollow shaft portion 22 does not have a surface orthogonal to the axial direction, but has a surface that is cut at an angle relative to the surface orthogonal to the axial direction. Because a lower tip 22s is formed, pressure is easily concentrated. Therefore, if it is a closed component 42 containing a thin film, it can be easily broken through the hollow shaft portion 22.

[0043] Furthermore, as described above, the hollow shaft portion 22 has an upper portion 22a and a lower portion 22b with different outer diameters. The outer diameter of the upper portion 22a, which is closer to the connection position with the cover cylinder 21, is larger. Therefore, the impact action of the hollow shaft portion 22 on the sealing member 42 can be made more stable. On the other hand, since it is in contact with the sealing member 42, the outer diameter of the lower portion 22b, which actually performs the initial impact action on the sealing member 42, is smaller. Therefore, it is preferable to increase the pressure during impact more reliably. In addition, the inner diameters of the upper portion 22a and the lower portion 22b are the same. More specifically, the diameter of the passage for the flow material formed in the hollow shaft portion 22 is fixed. However, as long as it does not impede the function of the outlet structure 1 for dispensing the flow material, the inner diameters of the upper portion 22a and the lower portion 22b can be changed midway depending on the characteristics of the flow material, the form of dispensing, etc.

[0044] Figure 6 The state shown is such that the second cylindrical portion 20 is rotated and moved downwards, thereby ending the state of the hollow shaft portion 22 breaking through the sealing member 42. The cut in the sealing member 42 becomes larger, and a hole is formed in the sealing member 42.

[0045] During the period when the second cylindrical section 20 advances downwards simultaneously with the breaking and closing member 42, that is, from Figure 4 The state transition shown is to Figure 6 In the state shown, it is contained in the flow animal containment section 40 ( Figure 3 The liquid material inside the container may leak into the outlet structure 1 through a break in the sealing member 42 (a hole formed in the sealing member 42). For example, during the relative rotation of the second cylinder 20 with respect to the first cylinder 30, the user may sometimes unintentionally move the liquid material container 10 itself or apply impact or pressure to the liquid material container 10. In this case, the liquid material may enter the outlet structure from the liquid material container 40 through the sealing member 42. In the case of liquid material entering the outlet structure, in an outlet structure according to a conventional structure, the liquid material may flow out or be discharged to the outside through the outlet structure. For example, it may flow out or be discharged to the outside through the hollow shaft portion of the second cylinder and the first cylinder, and then through the screw-on portion of the cover and the first cylinder.

[0046] In contrast, in this embodiment, a tight engagement TS is formed between the second cylindrical portion 20 and the first cylindrical portion 30. This tight engagement between the second cylindrical portion 20 and the first cylindrical portion 30 prevents sludge from flowing outwards through the space between them. More specifically, a protrusion 22p protruding from the outer peripheral surface of the hollow shaft portion 22 (upper portion 22a) of the second cylindrical portion 20 is formed. This protrusion 22p is in close contact with the inner peripheral surface of the first cylindrical portion 30, forming a tight engagement TS. Figure 4Therefore, even if flow material enters the inlet structure 1, the flow of flow material can be stopped at the location where the protrusion 22p is formed. Figure 5 Indicates formation Figure 4 An enlarged view of the tightly fitted TS portion.

[0047] like Figure 5 As shown, the protrusion 22p, viewed from above or in cross-section, can be a size that protrudes slightly radially outward from the inner circumferential surface of the first cylindrical portion 30. Thus, when the second cylindrical portion 20 travels downward, it is pressed into the opening of the first cylindrical portion 30. Furthermore, the height of the protrusion 22p (the length from the circumferential surface to the top of the protrusion 22p) depends on the material and dimensions of the second cylindrical portion 20 and / or the first cylindrical portion 30, but is preferably 0.01 to 0.5 mm, more preferably 0.03 to 0.3 mm, from the outer circumferential surface of the hollow shaft portion 22.

[0048] The protrusion 22p can be continuously formed on the outer peripheral surface of the hollow shaft portion 22. That is, the protrusion 22p can be an annular protrusion formed around the circumference of the hollow shaft portion 22. Therefore, leakage of the fluid in the circumferential direction can be prevented. In addition, it is preferable that the annular protrusion is formed along a surface orthogonal to the axial direction.

[0049] During the movement of the second cylindrical section 20 relative to the first cylindrical section 30 along the axial direction ( Figure 2 , Figure 4 and Figure 6 The moment when the protrusion 22p contacts the first cylindrical portion 30, preferably the moment when a tight engagement TS is formed, can be at least the moment when the hollow shaft portion 22 begins to break through the sealing member 42, or it can be the moment when the hollow shaft portion 22 (lower tip 22s) contacts the sealing member 42. Figure 4 The timing of the initial burst of the sealing member 42 is determined by the material of the sealing member 42, the shape of the lower tip 22s, and the diameter of the opening 38 on the lower side of the first cylindrical portion 30. Furthermore, the length along the axis from the top of the protrusion 22p to the lower end (lower tip 22s) of the hollow shaft portion 22 can be less than or equal to the length of the first cylindrical portion 30, i.e., the length from the upper edge 37 to the lower side of the bottom 36 (to the upper surface of the sealing member 42), or approximately equal to or equal to the length of the first cylindrical portion 30. Additionally, by forming the protrusion 22p at a position where a tight engagement TS can be formed at or immediately before the initial burst of the sealing member 42, pressure rise within the injection outlet structure 1 can be prevented, which is preferable from the viewpoint of ensuring smooth operation.

[0050] exist Figure 2 as well as Figures 4-6In the arrangement shown, the protrusion 22p is integrally formed with the hollow shaft portion 22 (the second cylindrical portion 20), but as long as it can form a tight engagement TS with the first cylindrical portion 30, the protrusion 22p can also be formed separately from the hollow shaft portion 22. Additionally, as... Figure 2 , Figure 4 as well as Figure 5 As shown, the protrusion 22p can be one point or multiple points along the axial direction.

[0051] Furthermore, when the second cylindrical portion 20 moves relative to the first cylindrical portion 30, the downward movement limit of the second cylindrical portion 20 can be until the lower side of the connection portion between the cover cylinder 21 and the hollow shaft portion 22 of the second cylindrical portion 20 abuts against the upper edge 37 of the first cylindrical portion 30. In other words, the upper edge 37 of the first cylindrical portion 30 acts as a stop, preventing the second cylindrical portion 20 from moving further downward. Preferably, a sealing gasket (O-ring) or an elastic ring component 50 is provided on the lower side of the connection portion between the cover cylinder 21 and the hollow shaft portion 22 of the second cylindrical portion 20. Figure 2 , Figure 4 and Figure 6 In this case, the second cylinder 20 can move downward until the upper edge 37 of the first cylinder 30 abuts against the elastic ring member 50.

[0052] Additionally, on the first cylindrical portion 30, at a position lower than the external thread portion 39, a limiting member 35 can be formed that protrudes radially from the outer peripheral surface of the first cylindrical portion 30. Figures 1-4 , Figure 6 As the second cylindrical portion 20 moves downward, the limiting member 35 abuts against 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. Therefore, at the point of contact, the second cylindrical portion 20 can no longer move downward. Thus, the limiting member 35 can also function as a stop to prevent the second cylindrical portion 20 from moving forward. In addition, before the limiting member 35 abuts against the lower surface of the stepped portion 22c, the upper edge 37 of the first cylindrical portion 30 abuts against the elastic ring member 50, but due to the presence of the limiting member 35, excessive load on the elastic ring member 50 can be prevented.

[0053] Alternatively, the sealing member 42 may be a thin film or sheet-like component formed as part of the flow animal containment section 40. The sealing member 42 may be, for example, a metal film sheet or an aluminum laminate. Furthermore, the thin film or sheet-like sealing member 42 may be flat or curved in a cup shape.

[0054] Figure 7 This is a modified example showing the tight engagement TS between the second cylinder and the first cylinder. Figure 7 The basic structure and reference of the injection outlet structure 201 shown Figure 2 as well as Figures 4-6The example of the injection outlet structure 1 is the same. The injection outlet structure 201 has a first cylindrical portion 230 that is fixed in position relative to the sealing member 42 and a second cylindrical portion 220 that is screwed onto the first cylindrical portion 230 and can move relative to the first cylindrical portion 230 in the axial direction. The second cylindrical portion 220 has a cap 221 and a hollow shaft portion 222, and the hollow shaft portion 222 can break through the sealing member 42, etc., which are also similar to the injection outlet structure 1. Figure 2 as well as Figures 4-6 The same applies. However, in the injection outlet structure 201, the tight engagement TS is not formed by the protrusion protruding from the hollow shaft portion and the first cylinder portion, but by the protrusion 231p protruding from the inner circumferential surface of the first cylinder portion 230 and the hollow shaft portion 222 of the second cylinder portion 220, which is different from the injection outlet structure 1. Figure 8 express Figure 7 An enlarged view of the tightly fitted TS section.

[0055] Figure 7 and Figure 8 The convex portion 231p shown is the same as the convex portion 22p in the injection outlet structure 1. Figure 2 and Figures 4-6 Similarly, the protrusion 231p can be an annular protrusion formed circumferentially on the inner circumferential surface of the first cylindrical portion 230. Furthermore, the protrusion 231p, viewed from above or in cross-section, can protrude slightly radially inward from the outer circumferential surface of the second cylindrical portion 220. Thus, as the second cylindrical portion 220 travels downward, the second cylindrical portion 220 and the first cylindrical portion 230 engage by pressing. By forming such a tight engagement TS, even if flow material intrudes into the outlet structure 201, the flow material can be prevented from leaking from the outlet structure 201 to the outside at the location of the tight engagement TS. Additionally, the axial position of the protrusion 231p (or the top of the protrusion 231p) can be at any position on the first cylindrical portion 30, as long as it allows for a tight engagement with the outer circumferential surface of the hollow shaft portion 222 at or before the moment the sealing member 42 begins to break.

[0056] Figure 9 Another variation showing the tight engagement TS between the second cylinder and the first cylinder. Figure 9 The basic structure of the injection outlet structure 301 shown is the same as that of the injection outlet structure 1 described above. Figure 2 as well as Figures 4-6The same applies to the injection outlet structure 1. The injection outlet structure 301 has a first cylindrical portion 330 that is fixed in position relative to the sealing member 42, and a second cylindrical portion 320 that is screwed onto the first cylindrical portion 330 and can move relative to the first cylindrical portion 330 in the axial direction. The second cylindrical portion 320 has a cap 321 and a hollow shaft portion 322, and the hollow shaft portion 322 can break through the sealing member 42, etc. However, in the injection outlet structure 301, the location where the tight engagement TS is formed is not between the hollow shaft portion 322 and the first cylindrical portion 330, but rather between the cap 321 and the first cylindrical portion 330 in the second cylindrical portion 320, which differs from the injection outlet structure 1. Figure 10 express Figure 9 An enlarged view of the tightly fitted TS section.

[0057] More specifically, the protrusion 321p formed on the inner circumferential surface of the main portion 321a of the cover 321 of the second cylinder 320 engages with the outer circumferential surface of the first cylinder 30. This tight engagement suppresses the flow of the fluid at the location where the protrusion 321p is formed. Even in the event of fluid intrusion into the outlet structure 301, leakage of fluid outside the outlet structure 301 is prevented.

[0058] Since an external thread 339 is formed on the outer peripheral surface of the first cylindrical portion 30, the protrusion 321p is preferably formed on the upper side of the region on the outer peripheral surface of the first cylindrical portion 30 where the external thread 339 is not formed, for example, on the region where the external thread 339 is formed.

[0059] exist Figure 9 and Figure 10 In the example shown, since the tight-fitting TS is formed by the cover cylinder 321 and the first cylinder portion 330, it is easier to apply force to the cover cylinder 321 in the second cylinder portion 320, and it is not easy to apply force to the hollow shaft portion 322. Therefore, in this embodiment, during the bursting of the sealing member 42, it is possible to prevent the hollow shaft portion 322 from shifting position, etc., and to stably apply pressure to the sealing member 42, making the bursting action smooth. From this point of view, it is preferred.

[0060] The form of tight engagement between the first and second cylindrical portions is not limited to the examples described above, as long as it can form a tight engagement between the first and second cylindrical portions that prevents the flow from leaking out. For example, in the injection outlet structure 301, the protrusion on the cap cylinder 321 side of the second cylindrical portion 320 may not be formed, but the protrusion may be formed on the outer peripheral surface of the first cylindrical portion 330.

[0061] Alternatively, in the injection outlet structure (1, 201, 301), a tight engagement can be formed between the inner circumferential surface of the large-diameter portion (21b, 221b, 321b) of the cap sleeve (32, 221, 321) and the limiting member (35, 235, 351), instead of the main portion (21a, 221a, 321a). However, in this case, the length of the large-diameter portion (21b, 221b, 321b) can be adjusted so that the large-diameter portion (21b, 221b, 321b) and the limiting member (35, 235, 351) can remain in contact during the breaking action of the closing member 42.

[0062] The specific embodiments described above are not limited to the present invention. Furthermore, the features illustrated in the above embodiments can be used in combination.

[0063] 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 by reference.

[0064] [Explanation of Symbols]

[0065] 1. Export structure of 201 and 301

[0066] 20, 220, 320, second cylinder section

[0067] 21, 221, 321 The cover of the second cylinder

[0068] The main body of the cover cylinders 21a, 221a, and 321a

[0069] The large diameter section of the cover cylinders 21b, 221b, and 321b

[0070] Stepped section of 21c, 221c, and 321c cap cylinders

[0071] 22, 222, 322 Hollow shaft section of the second cylinder

[0072] Upper part of the hollow shaft section of 22a and 222a

[0073] The lower part of the hollow shaft section of 22b and 222b

[0074] 22p, 231p and 321p protrusions

[0075] The extension section of the second cylinder of 25, 225, and 325

[0076] Openings of the second section of cylinders 27, 227, and 327

[0077] The internal threaded portion of the second cylinder of 29, 229, and 329

[0078] 30, 230, 330 First cylinder section

[0079] 31, 231, 331 Main body of the first cylinder

[0080] Limiting components of the first cylinder of 35, 235, and 335

[0081] 36, 236, 336, bottom of the first cylinder

[0082] The upper edge of the first cylinder in sections 37, 237, and 337.

[0083] 38, 238, 338 The lower opening of the first cylinder

[0084] External threaded portion of the first cylinder of 39, 239, and 339

[0085] 40. Floating Animal Shelter

[0086] 41. Main Body of the Containment Department

[0087] 42 Enclosed components

[0088] 50. Flexible ring component (O-ring)

[0089] TS tight fit.

Claims

1. An injection outlet structure for ejecting liquid animals contained in a receiving portion sealed by a sealing component, wherein, It has: a first cylindrical portion, which is fixed in position relative to the closing component; and The second cylindrical section coincides with the first cylindrical section in the axial direction and is movable relative to the first cylindrical section in the axial direction. The second cylindrical section has a hollow shaft portion disposed inside the first cylindrical section, and the hollow shaft portion has a breaking member capable of breaking the closed component through the relative movement. During the relative movement of the second cylindrical portion relative to the first cylindrical portion, a tight engagement is formed between the first cylindrical portion and the second cylindrical portion. The tight engagement is achieved by pressing a circumferentially formed annular protrusion on either the inner circumferential surface of the first cylindrical portion or the outer circumferential surface of the hollow shaft portion of the second cylindrical portion into the circumferential surface opposite to the annular protrusion. The annular protrusion is formed in a position such that it is spaced apart from the opposite circumferential surface in the state before use, and as the second cylindrical portion moves relative to the first cylindrical portion, the tight engagement is formed at or immediately before the moment of breaking the closure component.

2. The injection outlet structure according to claim 1, wherein, The tight engagement is formed between the hollow shaft portion of the first cylindrical portion and the second cylindrical portion. The hollow shaft portion has an upper part and a lower part, wherein the outer diameter of the lower part is smaller than the outer diameter of the upper part. The annular protrusion is formed on the upper part.

3. The injection outlet structure according to claim 2, wherein, The annular protrusion formed around the outer peripheral surface of the hollow shaft portion engages tightly with the inner peripheral surface of the first cylindrical portion.

4. The injection outlet structure according to claim 2, wherein, The annular protrusion formed around the inner circumferential surface of the first cylindrical portion engages tightly with the outer circumferential surface of the hollow shaft portion.

5. The injection outlet structure according to claim 1, wherein, During the relative movement of the first cylindrical section with respect to the second cylindrical section, the tight engagement is formed at least at the moment when the breaking member comes into contact with the closing member. The height of the annular protrusion from the circumferential surface is 0.01 to 0.5 mm.

6. The injection outlet structure according to claim 1, wherein, The closure component includes a membrane portion.

7. An injection outlet structure for ejecting liquids contained in a receiving portion sealed by a sealing component, wherein, It has: a first cylindrical portion, which is fixed in position relative to the closing component; and The second cylindrical section coincides with the first cylindrical section in the axial direction and is movable relative to the first cylindrical section in the axial direction. The second cylindrical section has a hollow shaft portion disposed inside the first cylindrical section. This hollow shaft portion has a breaking member capable of breaking the sealing member through the relative movement, and a cover cylinder disposed outside the first cylindrical section. During the relative movement of the second cylindrical portion relative to the first cylindrical portion, a tight engagement is formed between the first cylindrical portion and the second cylindrical portion. The tight engagement is achieved by pressing a circumferentially formed annular protrusion on either the outer circumferential surface of the first cylindrical portion or the inner circumferential surface of the cover cylinder of the second cylindrical portion into a circumferential surface opposite to the circumferential surface of the annular protrusion. The annular protrusion is formed in a position such that it is spaced apart from the opposite circumferential surface in the state before use, and as the second cylindrical portion moves relative to the first cylindrical portion, the tight engagement is formed at or immediately before the moment of breaking the closure component.

8. The injection outlet structure according to claim 7, wherein, The first cylindrical portion includes a limiting member that restricts the movement of the second cylindrical portion, which protrudes radially from the outer peripheral surface of the first cylindrical portion, toward the closing member. The cover of the second cylindrical section has a stepped portion. Through the relative movement, the limiting member abuts against the stepped portion from its lower side, thereby limiting the downward movement limit of the second cylindrical section. The tight engagement is formed between the limiting member and the inner circumferential surface of the cover.

9. The injection outlet structure according to claim 7, wherein, During the relative movement of the first cylindrical section with respect to the second cylindrical section, the tight engagement is formed at least at the moment when the breaking member comes into contact with the closing member. The height of the annular protrusion from the circumferential surface is 0.01 to 0.5 mm.

10. The injection outlet structure according to claim 7, wherein, The outer peripheral surface of the first cylindrical part is screwed into the inner peripheral surface of the cover cylinder of the second cylindrical part.

11. The injection outlet structure according to claim 10, wherein, The hollow shaft and the cover cylinder are connected at the ends away from the sealing component to form a connecting portion, and an elastic ring component is disposed in the connecting portion, and the first cylinder portion can abut against the elastic ring component.

12. The injection outlet structure according to claim 7, wherein, The closure component includes a membrane portion.

13. A container for containing stray animals, comprising: The injection outlet structure according to any one of claims 1 to 12; and The receiving section is equipped with the aforementioned injection outlet structure.

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