Plug opener cap

Abstract

To provide a plug opener cap improved in setting property when an inner plug is screwed onto an over-cap, even when a pouring aperture of the inner plug is smaller than an aperture of the over-cap.SOLUTION: The plug opener cap includes: an inner plug B that is attached to a container body A and has a pouring cylinder 10 erected; an intermediate cap C that is attached so as to cover the pouring cylinder 10 of the inner plug B; and an over-cap D that is engaged with the intermediate cap C and is screwed onto the inner plug B. The inner plug B is connected to the pouring cylinder 10 via a thin-walled weakened part 11, and has a transition stopper body E provided with an inner plug engagement part 14 and a male screw part 25 provided on the outside of the pouring cylinder 10. The intermediate cap C has an upper wall 35, a side wall 36, and an intermediate cap engagement part 46 that hangs down from the upper wall 35 and engages with the inner plug engagement part 14. The over-cap D has a top wall 50, a mounting cylindrical part 53 that hangs down from the top wall 50 and is engaged with the side wall 36 of the intermediate cap C through a ratchet, and a female screw part 55 that can be screwed with the male screw part 25.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an extractor cap having an inside plug with a removable transitional plug body, and more particularly to an extractor cap in which an overcap is screwed onto the inside plug. [Background technology]

[0002] Background Art

[0002] A pull-out cap has been conventionally known as a food container for accommodating contents such as dressing, in which the inside of the container body is sealed with an inner plug having a removable transition plug body until the time of opening, and the transition plug body of the inner plug can be opened by rotating an overcap that is screwed onto the inner plug in the screwing / removing direction. Furthermore, when screwing the overcap onto the inner plug, there is a problem in that the center position may shift, causing a malfunction in the transition plug body. To address this problem, a pull-off cap is also known that has a center foot on the overcap to guide the pouring tube and make alignment easier, thereby improving installation (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-064624 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the extractor cap described in Patent Document 1 above is equipped with a ratchet mechanism that allows the cap to rotate when the overcap is screwed on and tightened, and only engages when it is unscrewed to open it, resulting in the problem that the thin, weakened portion of the transition stopper body would break if the overcap was set at a slight angle. Furthermore, when the diameter of the spout of the inside plug is small (8 mm or less), alignment becomes even more difficult, resulting in a problem of insufficient setting ability.

[0005] The present invention has an object to solve the above-mentioned problems and to provide an uncorking cap that has improved setting properties when screwing and attaching the overcap to the inner stopper, even when the pouring outlet diameter of the inner stopper is small compared to the opening diameter of the overcap. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the present invention provides a remover cap comprising: a middle stopper that is attached to the mouth of a container body and has a dispensing tube for dispensing the contents erected thereon; an intermediate cap that is attached so as to cover the dispensing tube of the middle stopper; and an overcap that engages with the intermediate cap and is screwed onto the middle stopper, wherein the middle stopper has a transition stopper body that is connected to the inner surface of the dispensing tube via a thin-walled weakened portion and has a middle stopper engaging portion that engages with the intermediate cap, and a male threaded portion that is provided on the outside of the dispensing tube, the intermediate cap has a top wall, a side wall that is suspended from the periphery of the top wall, and a middle cap engaging portion that hangs down from the top wall and engages with the middle stopper engaging portion, and the overcap has a top wall, an attachment tube portion that hangs down from the top wall and engages with the side wall of the intermediate cap in a ratchet engagement manner, and a female threaded portion that can be screwed into the male threaded portion of the middle stopper.

[0007] In one embodiment of the extractor cap, the transition plug body has a bottom wall connected via a thin-walled weakened portion and a cylindrical wall erected from the bottom wall, the middle plug engaging portion has an inner peripheral engaging protrusion formed on the inner circumference of the cylindrical wall and an outward protrusion formed on the outer circumference of the cylindrical wall, and the intermediate cap engaging portion has an attachment cylindrical portion that hangs down from the upper wall and has an outer peripheral engaging protrusion that can engage with the inner peripheral engaging protrusion formed thereon, and a tightly fitting cylindrical portion that is in close contact with the inner circumference of the pouring cylinder and has an inward protrusion that can mesh with the outward protrusion formed on the inner circumference. The transition plug body has a bottom wall connected via a thin-walled weakened portion and a cylindrical wall erected from the bottom wall, the middle plug engaging portion has an inner peripheral engaging protrusion formed on the inner circumference of the cylindrical wall, and the intermediate cap engaging portion has an attachment cylindrical portion hanging down from the top wall and having an outer peripheral engaging protrusion engageable with the inner peripheral engaging protrusion, and a sealing cylindrical portion that fits tightly against the inner circumference of the pouring tube and engages with the outer periphery of the cylindrical wall in a ratchet manner.

[0008] In another embodiment of the pull-out cap, the transition plug body has a bottom wall connected via a thin-walled weakened portion and a cylindrical wall erected from the bottom wall, the inner plug engaging portion has an outward rib formed on the outer periphery of the cylindrical wall and an outer periphery engaging protrusion formed below the outward rib, and the intermediate cap engaging portion has a sealing cylindrical portion that hangs down from the upper wall, is in close contact with the inner periphery of the pouring cylinder, and has an inward rib formed on its inner periphery that can mesh with the outward rib, and an inner periphery engaging protrusion that is formed at the inner periphery lower end of the sealing cylindrical portion and can engage with the outer periphery engaging protrusion. the transition plug body has a bottom wall connected via a thin-walled weakened portion and a cylindrical wall erected from the bottom wall, the inner plug engaging portion has a reverse male thread portion formed on the outer periphery of the cylindrical wall, the intermediate cap engaging portion hangs down from the top wall and is in close contact with the inner periphery of the pouring tube, and has a sealed cylindrical portion on its inner periphery a reverse female thread portion which screws into the reverse male thread portion, and the reverse male thread portion and the reverse female thread portion are screwed together with a reverse thread relative to the screwing of the male thread portion of the inner plug and the female thread portion of the overcap.

[0009] As a specific embodiment of the remover cap, a configuration is adopted in which the inner plug has an outer peripheral locking protrusion protruding between the pouring tube and the male threaded portion, and the intermediate cap has an inner peripheral locking protrusion at the lower end of the side wall that engages with the outer peripheral locking protrusion. Effect of the Invention

[0010] By adopting the above-mentioned configuration, the extractor cap of the present invention is less likely to shift its center position relative to the inner plug when the overcap is screwed onto the inner plug, so that the overcap can be screwed onto the inner plug without breaking the thin-walled weakened portion connecting the inner plug and the transition plug body, thereby improving the setting ability without causing any problems with the transition plug body. [Brief description of the drawings]

[0011] [Figure 1] 1A and 1B are diagrams showing the closed state of the uncork cap of Example 1, in which (a) is a cross-sectional side view, and (b) is a cross-sectional arrow view taken along line X1-X1 of (a). [Diagram 2]1A and 1B are diagrams showing an inner plug of a pull-out cap of Example 1, in which (a) is a top view and (b) is a cross-sectional side view. [Diagram 3] 1A and 1B are diagrams showing an intermediate cap of the uncorking cap of Example 1, in which (a) is a partially half-sectional side view, and (b) is a bottom view. [Figure 4] 1A and 1B are diagrams showing an overcap of the uncorking cap of Example 1, in which (a) is a cross-sectional side view and (b) is a bottom view. [Diagram 5] 1A and 1B are cross-sectional side views of the inner plug and intermediate cap of Example 1, in which (a) shows the inner plug and intermediate cap when aligned before being set, and (b) shows the inner plug and intermediate cap after being set. [Figure 6] FIG. 13 is a diagram showing the state of alignment after the inner plug with the intermediate cap set in Example 1 is attached to the container body and before the overcap is closed. [Figure 7] 1A and 1B are diagrams showing the closed state of the uncork cap of Example 2, in which (a) is a cross-sectional side view, and (b) is a cross-sectional arrow view taken along line X2-X2 of (a). [Figure 8] 11A and 11B are diagrams showing the closed state of the pull-out cap of Example 3, in which (a) is a cross-sectional side view, and (b) is a cross-sectional arrow view taken along line X3-X3 of (a). [Figure 9] 11A and 11B are diagrams showing the closed state of the pull-out cap of Example 4, in which (a) is a cross-sectional side view, and (b) is a cross-sectional arrow view taken along line X4-X4 in (a). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Next, the extractor cap of the present invention will be described with reference to the drawings showing an embodiment. In the following description, with respect to FIG. 1(a), the left-right direction is referred to as the "radial direction", the up-down direction is referred to as the "axial direction", the up direction is referred to as the "upper", and the down direction is referred to as the "lower".

[0013] Example 1 In FIG. 1, A is the container body, B is the inner plug which is attached to the container body A and has a transition plug body E on the inside, C is the intermediate cap which is attached to the inner plug B, and D is the overcap which fits onto the intermediate cap C and is screwed onto the inner plug B.

[0014] As shown in FIG. 1, the mouth 1 of the container body A is provided with a locking protrusion 2 that fits over the inside plug B to prevent it from coming off.

[0015] As shown in Figures 1 and 2, the center plug B is composed of an outer tube 5 on the outer periphery and an inner tube 6 on the inner periphery, and is composed of an attachment portion 4 forming an annular groove into which the mouth portion 1 fits, a threaded wall portion 8 erected from the upper surface of the attachment portion 4, a pouring tube 10 connected to the inner periphery of the upper end of the threaded wall portion 8 via a ring-shaped upper wall 9, and a transition plug body E connected to the lower end of the inner periphery of the pouring tube 10 via a breakable thin-walled weakened portion 11.

[0016] The pouring tube 10 has an inner circumferential lower portion serving as a pouring outlet, and an upper portion having a lip portion 10a that expands in diameter and curves outward. The outer periphery of the pouring tube 10 is provided at its lower part in close proximity to the inner end of the ring-shaped upper wall 9 with an outer periphery locking projection 13 which engages with the intermediate cap C.

[0017] The transition stopper body E is connected to the lower end of the inner circumference of the pouring tube 10 via the thin-walled weakened portion 11, and is composed of a bottom wall 15 that seals the inside of the pouring tube 10 together with the thin-walled weakened portion 11, and a cylindrical tubular wall 16 that stands up from the outer edge of the bottom wall 15 and has an inner stopper engagement portion 14 that engages with the intermediate cap C.

[0018] The cylindrical wall 16 has an inner peripheral engaging protrusion 18 protruding in an annular shape on the upper inner periphery as the center plug engaging portion 14, and a plurality of large protrusions 19 of range β protruding circumferentially with a predetermined range α spaced apart from each other on the outer periphery of the cylindrical wall 16 as outward protrusions. In this embodiment, as shown in Figures 1(b) and 2(a), the large protrusion 19 is provided at two locations along the outer periphery at intervals of 180°, with a range α between them and protruding outward over a range β larger than the range α, and is formed to engage with a small protrusion 40 serving as an inward protrusion provided at an appropriate location on the intermediate cap C described later.

[0019] The ring-shaped upper wall 9 has a plurality of first stoppers 21 arranged circumferentially at predetermined intervals on the inner peripheral edge of the upper surface, which engage with the intermediate cap C to stop rotation and align it, and the outer peripheral edge is provided with a step portion 22 that is recessed toward the outer periphery, and a sound-emitting protrusion 23 is arranged at a predetermined location on the inner peripheral side of the step portion 22. The threaded wall portion 8 has an outer circumferential surface provided with a male thread portion 25 that is composed of multiple threads.

[0020] A plurality of second stoppers 27 that engage with the overcap D to stop rotation are arranged at predetermined circumferential intervals on the upper surface of the mounting portion 4, and each second stopper 27 has a substantially vertical abutment surface in the screwing / removal direction and an inclined surface in the screwing direction.

[0021] A locking portion 28 is provided on the inner circumferential lower portion of the outer cylinder 5 of the mounting portion 4 to engage with the locking protrusion 2 and prevent the mouth portion 1 from coming off. Furthermore, the outer tube 5 has a notched recess 29 recessed radially from the outer circumferential surface around the circumferential direction, and a separation mechanism 30 is provided below the notched recess 29 to enable the inner stopper B to be separated from the container body A for separate disposal.

[0022] The sorting mechanism 30 has a gripping portion for holding with fingers (not shown), a vertical cut portion that breaks vertically, a circumferential cut portion that breaks circumferentially, and a connecting portion at the end of the circumferential cut portion that is integral with the outer tube 5. The structure of the separation mechanism 30 is not limited and may be any structure.

[0023] As shown in Figures 1 and 3, the intermediate cap C has a disk-shaped upper wall 35 and a side wall 36 suspended from the outer periphery of the upper wall 35. The underside of the upper wall 35 has an intermediate cap engaging portion 46 that engages with the inner plug engaging portion 14. Near the center, there is an attachment tubular portion 37 that is attached to the inner periphery of the cylindrical wall 16 of the transition plug body E of the inner plug B. Radially outward from the attachment tubular portion 37, there is a sealing tubular portion 38 that closes by its outer periphery being in close contact with the upper inner periphery of the dispensing tube 10 of the inner plug B when the cap is closed.

[0024] An outer peripheral engaging projection 39 is provided on the lower outer periphery of the engaging tubular portion 37 to engage with the inner periphery of the inner peripheral engaging projection 18 of the tubular wall 16 of the transition plug E to prevent it from falling off. At a predetermined location on the lower end of the sealed cylindrical portion 38, a plurality of small protrusions 40 are vertically provided as inward protrusions, each having an engaging range α, leaving a range β of the large protrusion 19 on the outer periphery of the cylindrical wall 16 circumferentially open.

[0025] In this embodiment, as shown in Figures 1(b) and 3(b), each small protrusion 40 is vertically disposed at two locations along the outer periphery at intervals of 180°, with a range α that is smaller than the range β and is formed to fit and mesh with the large protrusion 19. Furthermore, since the large protrusion 19 and the small protrusion 40 only need to mesh with each other, the sizes of the ranges α and β can be reversed to change the width, or the number of protrusions arranged circumferentially can be changed to allow them to interlock, so long as the shape and placement locations can be determined appropriately.

[0026] The side wall 36 has an outer circumferential upper portion formed with an outer circumferential mounting protrusion 42 that engages with the overcap D, and a plurality of outer teeth 43 protruding circumferentially at a predetermined interval from the middle portion of the outer circumferential portion are arranged. These teeth 43 engage with ratchet inner teeth 60 of the overcap D described below and control the rotation of the intermediate cap C by screwing or unscrewing the overcap D. The inner circumferential lower portion is arranged with an inner circumferential locking protrusion 44 that engages with the outer circumferential locking protrusion 13 of the middle cap B to keep the lid closed. A first wedge-shaped recess 45 is recessed at a predetermined position at the lower end and engages with the first stopper 21 of the ring-shaped upper wall 9 of the middle cap B to stop rotation.

[0027] As shown in FIG. 1(b), the outer teeth 43 are formed with an inclined surface 43a that the ratchet inner teeth 60 deform and overcome when the overcap D is screwed and rotated, causing the intermediate cap C to spin freely, and a contact surface 43b that abuts against the ratchet inner teeth 60 when the overcap D is screwed and unscrewed, causing the intermediate cap C to rotate together.

[0028] As shown in Figures 1 and 4, overcap D comprises a disk-shaped top wall 50 and an outer peripheral wall 51 that hangs down from the outer periphery of top wall 50 and covers the inner stopper B and the upper part of container body A on the inside. On the underside of top wall 50, there are hung a threaded tubular portion 52 that screws into the outer periphery of threaded wall portion 8 of inner stopper B, and an attachment tubular portion 53 that engages with side wall 36 of intermediate cap C radially inwardly of threaded tubular portion 52 and attaches intermediate cap C to the inside.

[0029] The threaded tube portion 52 has a female thread portion 55 formed of a multiple thread on its inner circumference which screws into the male thread portion 25 of the inner plug B, and a plurality of second wedge-shaped recesses 56 which engage with the second stopper 27 are arranged in the circumferential direction on the lower end face, and a plurality of reinforcing ribs 52a are arranged in the axial direction on the outer periphery. The second wedge-shaped recess 56 is formed in a shape corresponding to the abutment surface and inclined surface of the second stopper 27, so that when the lid is closed, the lower end surface of the threaded cylindrical portion 52 abuts against the upper surface of the mounting portion 4 of the inner plug B, and the abutment surfaces of the second wedge-shaped recess 56 and the second stopper 27 abut against each other, completing the tightening of the overcap D to the inner plug B.

[0030] The mounting tube portion 53 has an inner peripheral mounting protrusion 58 at its upper inner periphery which engages with the outer peripheral mounting protrusion 42 on the side wall 36 of the intermediate cap C to prevent it from falling off, and an engagement recess 59 which is expanded in diameter from below the inner peripheral mounting protrusion 58 to the bottom end so as to be spaced apart from the outer diameter of the external teeth 43 of the side wall 36 with a margin when the lid is closed. Within the engagement recess 59, a plurality of ratchet internal teeth 60 are arranged at predetermined positions which extend inward and each engage with the external teeth 43 to form a ratchet mechanism. In addition, a sound-emitting piece 61 is provided at the lower end of the mounting tube portion 53. When the overcap D is screwed onto the inner plug B, the sound-emitting piece 61 abuts against the sound-emitting protrusion 23 of the inner plug B, overcomes it, and vibrates to produce sound.

[0031] As shown in Figures 1(b) and 4, the ratchet inner teeth 60 extend from within the engagement recess 59 and consist of a deformable, thin-walled deformable arm portion 60a, and an abutment portion 60b formed inside the deformable arm portion 60a. When the overcap D is screwed and rotated, the tip of the abutment portion 60b abuts against the inclined surface 43a of the external teeth 43, and the inclination pushes and deforms the deformed arm portion 60a, causing it to overcome the external teeth 43 and spin freely relative to the intermediate cap C. When the overcap D is screwed and rotated, the tip of the abutment portion 60b abuts against the abutment surface 43b of the external teeth 43, rotating the intermediate cap C together, forming a ratchet mechanism.

[0032] Next, the manner of use and the effects of this embodiment will be described. In the present embodiment, the uncorking cap is set by first attaching the intermediate cap C to the top of the inner plug B. When attaching, as shown in Figure 5 (a), while making sure that the dispensing tube 10 of the inner plug B fits within the side wall 36 of the intermediate cap C, insert the engaging tube portion 37 at the center of the intermediate cap C into the inner circumference of the tubular wall 16 of the transition plug body E of the inner plug B, and guide (align) the small protrusion 40 at the lower end of the sealing tube portion 38 of the intermediate cap C into the large protrusion 19 on the outer circumference of the tubular wall 16 and push it in so that it engages with it.

[0033] Furthermore, as the intermediate cap C descends, the outer peripheral engaging protrusion 39 of the fastening tubular portion 37 of the intermediate cap C overcomes the inner peripheral engaging protrusion 18 of the transition stopper E and engages with the inner peripheral surface of the tubular wall 16, and the outer periphery of the sealing tubular portion 38 comes into close contact with the upper inner peripheral portion of the dispensing tube 10. At the same time, the inner peripheral locking protrusion 44 of the side wall 36 of the intermediate cap C climbs over the outer peripheral locking protrusion 13 of the middle plug B and fits together, and the lower end of the side wall 36 abuts against the inner upper surface of the ring-shaped upper wall 9, while the first wedge-shaped recess 45 of the side wall 36 and the first stopper 21 of the ring-shaped upper wall 9 are not fitted together, and the intermediate cap C is set on the middle plug B.

[0034] When the intermediate cap C and the inside plug B are set, each small protrusion 40 of the intermediate cap C meshes with the corresponding large protrusion 19 of the inside plug B to form a concave-convex fit. As shown in FIG. 5(b), the intermediate cap C is aligned with the inside plug B and is attached while being guided so as not to rotate. This makes setting easy and prevents the center position from shifting, so that the thin-walled weakened portion 11 of the inside plug B is not broken when setting.

[0035] In addition, after setting, the intermediate cap C covers the inside of the dispensing tube 10 of the inner stopper B and is fixed so that it cannot come off. Therefore, even if multiple sets of inner stoppers B and intermediate caps C are stacked, the set items will not collide with each other and damage the dispensing tube 10 itself or the transition stopper body E and thin-walled weakened portion 11 inside the dispensing tube 10, making it easy to manage their movement as parts.

[0036] Next, the middle cap C is set on the inner plug B, and the fitting portion 4 of the inner plug B is placed on the mouth portion 1 of the container body A filled with the contents, and the inner plug is fitted. Finally, the overcap D is rotated from above the intermediate cap C and screwed onto the inner plug B, completing the container with a closed stripper cap.

[0037] To attach the overcap D by screwing, as shown in Figure 6, place the overcap D on the top surface of the intermediate cap C set on the middle plug B, and then rotate and push the overcap D in. The lower end of the female threaded portion 55 of the threaded tube portion 52 of the overcap D abuts against the upper end of the male threaded portion 25 of the threaded wall portion 8 of the middle plug B, and the two are screwed together while engaging with each other.

[0038] As the overcap D and the inside plug B are screwed together, the outer ends of the external teeth 43 on the side wall 36 of the intermediate cap C come into contact with the inner ends of the ratchet internal teeth 60 on the inner circumference of the mounting tube portion 53 of the overcap D, but since they are rotated in the screwing direction, the overcap D rotates freely and the screwing proceeds due to the inclination of the inclined surface 43a of the external teeth 43 and the pushing deformation of the deformed arm portion 60a of the ratchet internal teeth 60. Note that as the overcap D rotates freely and the screwing proceeds, the intermediate cap C is prevented from rotating together with the overcap D by the first wedge-shaped recess 45 and the first stopper 21 so that the thin-walled weakened portion 11 does not break.

[0039] Finally, the second wedge-shaped recess 56 at the bottom of the threaded cylindrical portion 52 abuts against the second stopper 27 of the inner plug B, stopping the screwing, and the inner mounting protrusion 58 on the inner periphery of the mounting cylindrical portion 53 of the overcap D climbs over and fits over the outer mounting protrusion 42 on the outer periphery of the side wall 36 of the intermediate cap C, so that the overcap D is screwed onto the inner plug B with the intermediate cap C set therein, completing the container with a closed pull-off cap attached. In addition, when the overcap D is closed, the sound-emitting piece 61 at the bottom of the mounting tube portion 53 comes into contact with the sound-emitting protrusion 23 on the ring-shaped upper wall 9 of the inner plug B and vibrates, emitting a sound, so that the user of the present invention can intuitively know when the overcap D is completely closed.

[0040] In the remover cap of this embodiment, the intermediate cap C is set on the middle plug B, and then the overcap D is screwed onto this middle plug B. Therefore, there is no misalignment in the screwing of the overcap D and the middle plug B, and in the fit between the intermediate cap C and the transition plug body E of the middle plug B, and the center positions of each are not shifted or set at an angle. Furthermore, when the overcap D is screwed onto it, there is no twisting between the transition plug body E and the middle plug B, so the thin-walled weakened portion 11 is not broken, and the setting is stable and good.

[0041] Next, in order to use a container equipped with the uncorking cap of this embodiment, the overcap D is rotated relative to the inside plug B in the unscrewing direction. When the overcap D is rotated, the inner periphery of the threaded cylindrical portion 52 of the overcap D and the outer periphery of the threaded wall portion 8 of the inner plug B are disengaged, and the overcap D is raised relative to the inner plug B as it is rotated. Furthermore, as a result of rotation in the unscrewing direction, the abutment portion 60b of the ratchet inner teeth 60 on the inner circumference of the mounting tube portion 53 of the overcap D abuts against and pushes against the abutment surface 43b of the external teeth 43 on the side wall 36 of the intermediate cap C, so that as the overcap D rotates, the intermediate cap C also rotates relative to the middle plug B.

[0042] When the intermediate cap C rotates relative to the inner plug B, the small protrusion 40 of the sealed cylindrical portion 38 of the intermediate cap C engages with the large protrusion 19 on the outer periphery of the cylindrical wall 16 of the transition plug body E of the inner plug B, causing the transition plug body E to also rotate, thereby breaking the thin-walled weakened portion 11 connecting the rotating transition plug body E and the stationary dispensing tube 10.

[0043] In addition, as the overcap D rotates, it is lifted up relative to the non-rotating middle plug B, and as a result, the inner peripheral mounting protrusion 58 on the inner circumference of the mounting tube portion 53 of the overcap D engages with the outer peripheral mounting protrusion 42 on the outer circumference of the side wall 36 of the intermediate cap C, and the intermediate cap C is also lifted up along with the overcap D. As the intermediate cap C is also lifted up, the inner peripheral locking protrusion 44 on the side wall 36 of the intermediate cap C and the outer peripheral locking protrusion 13 of the dispensing tube 10 of the inner stopper B are disengaged, and the outer peripheral engaging protrusion 39 of the fastening tube portion 37 of the intermediate cap C engages with the inner peripheral periphery of the tubular wall 16 of the transition stopper body E, causing the transition stopper body E, which has been cut at the thin-walled weakened portion 11, to be lifted up from the inside of the dispensing tube 10 of the inner stopper B together with the intermediate cap C.

[0044] As the overcap D continues to rotate and is unscrewed, it is finally detached from the inner plug B with the intermediate cap C and transition plug body E attached inside the overcap D, and the pouring outlet inside the pouring tube 10 is opened. The contents in the container body A can be poured out from the pouring cylinder 10 with the inner plug B opened. After the transition plug E is detached from the inner plug B, it moves inside the sealed cylindrical portion 38 of the intermediate cap C attached inside the overcap D and is held in place so as not to come off.

[0045] After the contents in the container body A are poured out, when the overcap D is screwed onto the inner stopper B again, the outer periphery of the sealing tube portion 38 of the intermediate cap C adheres tightly to the upper inner periphery of the pouring tube 10 of the inner stopper B to seal the inside of the container body A.

[0046] When the container is to be disposed of after use, the inner plug B of the pull-out cap of this embodiment can be separated from the container body A by using the separating mechanism 30 and disposed of separately. The gripping portion is pulled toward oneself to break the vertical cut portion, which then continues to break into the circumferential cut portion. At the connecting portion at the end integral with the outer tube 5, the inner stopper B is detached from the container body A and can be disposed of separately. The separating mechanism 30 may be omitted.

[0047] In this embodiment, a second stopper 27 and a second wedge-shaped recess 56 are provided on the inner stopper B and the overcap D to stop rotation after closing is complete, but when closing is complete, a sound is emitted by the sound-emitting piece 61, allowing the user to intuitively know that the cap is completely closed, so it is not necessary to provide the second stopper 27 and the second wedge-shaped recess 56, and further, it is not necessary to provide a sound-emitting mechanism using the sound-emitting protrusion 23 and the sound-emitting piece 61.

[0048] Example 2 Next, a second embodiment in which the configuration of the intermediate cap C and the transition plug body E of the inner plug B in the first embodiment is changed will be described. In the following, the same components as those in the first embodiment are given the same reference numerals, changed parts are given new reference numerals, and the differences will be mainly described.

[0049] As shown in FIG. 7, A is a container body, Ba is an inner plug that is attached to the container body A and has a transition plug body Ea on its inside, Ca is an intermediate cap that is attached to the inner plug Ba, and D is an overcap that fits onto the intermediate cap Ca and is screwed onto the inner plug Ba.

[0050] The inner plug Ba is composed of an attachment portion 4, a threaded wall portion 8 erected from the upper surface of the attachment portion 4, a pouring tube 10 connected to the inner circumference of the upper end of the threaded wall portion 8 via a ring-shaped upper wall 9, and a transition plug body Ea connected to the inner circumference lower end of the pouring tube 10 via a breakable thin-walled weakened portion 11. The transition plug body Ea is connected to the lower end of the inner circumference of the pouring tube 10 via the thin-walled weakened portion 11, and is composed of a bottom wall 65 that seals the inside of the pouring tube 10 together with the thin-walled weakened portion 11, and a cylindrical tubular wall 66 that stands upright from the outer edge of the bottom wall 65 and has an inner plug engagement portion 64 that engages with the intermediate cap Ca.

[0051] The cylindrical wall 66 has an inner peripheral engagement protrusion 68 protruding in an annular shape on the upper inner circumference as a center plug engagement portion 64, and a plurality of inner external teeth 69 are arranged circumferentially at a predetermined interval on the outer circumference of the cylindrical wall 66. In this embodiment, the inner external teeth 69, like the outer teeth 43 of the intermediate cap Ca, are formed with an inclined surface that the inner ratchet inner teeth 71 of the intermediate cap Ca, described later, deform and overcome when the overcap D is screwed and rotated, and an abutment surface that abuts against the inner ratchet inner teeth 71 of the intermediate cap Ca when the overcap D is screwed and unscrewed, causing the inner external teeth 69 to rotate together with the intermediate cap Ca.

[0052] The intermediate cap Ca has a disk-shaped upper wall 35 and a side wall 36 extending vertically from the outer periphery of the upper wall 35. The underside of the upper wall 35 has an intermediate cap engaging portion 72 that engages with the inner plug engaging portion 64. Near the center, there is an attachment tubular portion 37 that is attached to the inner periphery of the cylindrical wall 66 of the transition plug body Ea of the inner plug Ba, and extending vertically radially outward from the attachment tubular portion 37 is a sealing tubular portion 70 whose outer periphery fits tightly against the inner periphery of the dispensing tube 10 of the inner plug Ba when the cap is closed.

[0053] A plurality of inner ratchet teeth 71 are disposed on the inner circumference of the sealed cylinder portion 70, which extend inward and engage with the respective inner outer teeth 69 of the transition plug Ea to form a ratchet mechanism. Similar to the ratchet internal teeth 60 of the overcap D, the inner ratchet internal teeth 71 are composed of a deformable arm portion 71a extending from the inner circumference of the sealed cylindrical portion 70 and formed with a thin wall that is deformable, and an abutment portion 71b formed on the inside of the deformable arm portion 71a.

[0054] Next, the manner of use and the effects of this embodiment will be described. In this embodiment, the extractor cap is aligned from the top of the middle plug Ba and then the intermediate cap Ca is attached, then the overcap D is placed over it and rotated in the screwing direction. As the screwing progresses, the external teeth 43 on the side wall 36 of the intermediate cap Ca and the internal ratchet teeth 60 of the overcap D rotate freely, climbing over the internal ratchet teeth 71 of the intermediate cap Ca and the internal external teeth 69 of the transition plug body Ea, causing the transition plug body Ea to rotate freely relative to the middle plug Ba, and preventing the thin-walled weakened portion 11 from breaking.

[0055] When the overcap D is rotated in the screw-removal direction to open it, the external teeth 43 of the side wall 36 of the intermediate cap Ca engage with the ratchet internal teeth 60 of the overcap D, and the internal ratchet internal teeth 71 of the intermediate cap Ca engage with the internal external teeth 69 of the transition plug body Ea, causing the transition plug body Ea to rotate relative to the inner plug Ba, breaking the thin-walled weakened portion 11, detaching the transition plug body Ea from the inner plug Ba, and opening the pouring outlet in the pouring tube 10. The other configurations and effects are the same as those of the first embodiment.

[0056] Example 3 Next, a third embodiment in which the configuration of the intermediate cap C and the transition plug body E of the inner plug B in the first embodiment is changed will be described. In the following, the same components as those in the first embodiment are given the same reference numerals, changed parts are given new reference numerals, and the differences will be mainly described.

[0057] As shown in FIG. 8, A is a container body, Bb is an inner stopper that is attached to the container body A and has a transition stopper body Eb on its inside, Cb is an intermediate cap that is attached to the inner stopper Bb, and D is an overcap that fits onto the intermediate cap Cb and is screwed onto the inner stopper Bb.

[0058] The inner plug Bb is composed of an attachment portion 4, a threaded wall portion 8 erected from the upper surface of the attachment portion 4, a pouring tube 10 connected to the inner circumference of the upper end of the threaded wall portion 8 via a ring-shaped upper wall 9, and a transition plug body Eb connected to the inner circumference lower end of the pouring tube 10 via a breakable thin-walled weakened portion 11.

[0059] The transition stopper body Eb is composed of a ring-shaped bottom wall 75 connected to the lower end of the inner circumference of the pouring tube 10 via the thin-walled weakened portion 11, a cylindrical wall 76 standing up from the inner edge of the ring-shaped bottom wall 75 and having an inner stopper engagement portion 78 on its side that engages with the intermediate cap Cb, and a top wall 77 that blocks the upper inner circumference of the cylindrical wall 76 and seals the inside of the pouring tube 10 together with the thin-walled weakened portion 11 with the transition stopper body Eb. The cylindrical wall 76 has a recessed step 79 of reduced diameter formed at the upper part thereof as a plug engagement portion 78, and an outer peripheral engagement protrusion 80 protrudes from the lower outer periphery thereof, and a plurality of outwardly extending ribs 82 are arranged at a predetermined interval on the recessed step 79.

[0060] The intermediate cap Cb has a disk-shaped upper wall 35 and a side wall 36 extending vertically from the outer periphery of the upper wall 35. The underside of the upper wall 35 has an intermediate cap engagement portion 84 which engages with the inner plug engagement portion 78. When the cap is closed, the outer periphery of the intermediate cap Cb fits tightly against the inner periphery of the pouring tube 10 of the inner plug Bb to close the cap, and a sealing cylindrical portion 85 is attached vertically to the outer periphery of the cylindrical wall 76 of the transition plug body Eb of the inner plug Bb.

[0061] The sealed cylindrical portion 85 has multiple inward-facing ribs 87 formed inward at the upper inner circumference so as to engage with the outward-facing ribs 82 of the cylindrical wall 76 of the transition plug body Eb, and an inner peripheral engaging protrusion 88 protrudes from the lower inner circumference so as to engage with the outer peripheral engaging protrusion 80 of the cylindrical wall 76 of the transition plug body Eb to prevent it from falling off.

[0062] Next, the manner of use and the effects of this embodiment will be described. When the extractor cap of this embodiment is aligned from the top of the middle plug Bb and the intermediate cap Cb is attached, the inward rib 87 of the sealing cylindrical portion 85 of the intermediate cap Cb meshes with and engages with the outward rib 82 of the cylindrical wall 76 of the transition plug body Eb. This allows the first wedge-shaped recess 45 of the intermediate cap Cb to fit into the first stopper 21 of the middle plug Bb, and the intermediate cap Cb and the transition plug body Eb are attached so as not to rotate relative to the middle plug Bb, thereby preventing the thin-walled weakened portion 11 of the middle plug Bb from being broken.

[0063] In addition, when the overcap D is placed on the cap and rotated in the screwing direction, as the screwing progresses, the external teeth 43 of the side wall 36 of the intermediate cap Cb and the ratchet internal teeth 60 of the overcap D rotate freely, preventing the transition plug body Eb from rotating relative to the middle plug Bb, and preventing the thin-walled weakened portion 11 from breaking.

[0064] When the overcap D is opened and rotated in the unscrewing direction, the external teeth 43 of the side wall 36 of the intermediate cap Cb engage with the ratchet internal teeth 60 of the overcap D, and the inward rib 87 of the intermediate cap Cb engages with the outward rib 82 of the transition stopper body Eb, causing the transition stopper body Eb to rotate relative to the inner stopper Bb, breaking the thin-walled weakened portion 11, detaching the transition stopper body Eb from the inner stopper Bb, and opening the pouring outlet in the pouring tube 10. The other configurations and effects are the same as those of the first embodiment.

[0065] Example 4 Next, a fourth embodiment in which the configuration of the intermediate cap C and the transition plug body E of the inner plug B in the first embodiment is changed will be described. In the following, the same components as those in the first embodiment are given the same reference numerals, changed parts are given new reference numerals, and the differences will be mainly described.

[0066] As shown in FIG. 9, A is a container body, Bc is an inner plug which is attached to the container body A and has a transition plug body Ec therein, Cc is an intermediate cap which is attached to the inner plug Bc, and D is an overcap which fits onto the intermediate cap Cc and is screwed onto the inner plug Bc.

[0067] The inner plug Bc is composed of an attachment portion 4, a threaded wall portion 8 erected from the upper surface of the attachment portion 4, a pouring tube 10 connected to the inner circumference of the upper end of the threaded wall portion 8 via a ring-shaped upper wall 9, and a transition plug body Ec connected to the inner circumference lower end of the pouring tube 10 via a breakable thin-walled weakened portion 11. The transition plug body Ec is connected to the lower end of the inner circumference of the pouring tube 10 via the thin-walled weakened portion 11, and is composed of a bottom wall 90 that seals the inside of the pouring tube 10 together with the thin-walled weakened portion 11, and a cylindrical tubular wall 91 that stands upright from the outer edge of the bottom wall 90 and has an inner plug engagement portion 96 that engages with the intermediate cap Cc. The cylindrical wall 91 has an inner peripheral engagement protrusion 92 protruding in an annular shape on the upper inner peripheral part as an inner plug engagement portion 96, and a reverse male thread portion 93 that is set as a reverse thread with the male thread portion 25 of the threaded wall portion 8 of the inner plug Bc is screwed onto the outer periphery of the cylindrical wall 91.

[0068] The ring-shaped upper wall 9 is provided with a plurality of reverse thread stoppers 94 arranged circumferentially at predetermined intervals on the inner periphery of the upper surface. The reverse thread stoppers 94 engage with the intermediate cap Cc to stop reverse thread rotation and align the cap.

[0069] The intermediate cap Cc has a disk-shaped upper wall 35 and a side wall 36 suspended from the outer periphery of the upper wall 35. The underside of the upper wall 35 has an intermediate cap engagement portion 99 that engages with the middle plug engagement portion 96. Near the center, there is an attachment tubular portion 37 that is attached to the inner periphery of the cylindrical wall 91 of the transition plug body Ec of the middle plug Bc. Radially outward from the attachment tubular portion 37, there is a sealing tubular portion 95 that closes the middle plug Bc by tightly contacting the inner periphery of the dispensing tube 10 of the middle plug Bc when the cap is closed, and that screws into the outer periphery of the cylindrical wall 91 of the transition plug body Ec.

[0070] The inner periphery of the sealed cylindrical portion 95 is provided with a reverse female thread portion 97 which screws into the reverse male thread portion 93 on the outer periphery of the cylindrical wall 91 of the transition plug Ec. A reverse threaded wedge-shaped recess 98 is provided at a predetermined location on the lower end of the side wall 36 for engaging with a reverse threaded stopper 94 on the ring-shaped upper wall 9 of the inside plug Bc to stop reverse thread rotation.

[0071] Next, the manner of use and the effects of this embodiment will be described. In the present embodiment, when the intermediate cap Cc is attached by aligning it from the top of the inner plug Bc, the engaging tubular portion 37 at the center of the intermediate cap Cc is inserted into the inner circumference of the tubular wall 91 of the transition plug body Ec of the inner plug Bc, and the reverse female thread portion 97 on the inner circumference of the sealing tubular portion 95 of the intermediate cap Cc is aligned with the reverse male thread portion 93 of the tubular wall 91 of the transition plug body Ec, and rotated in the reverse thread direction to screw them together.

[0072] As the cap Cc is further rotated in the reverse thread direction and screwed into place, the outer peripheral engaging projection 39 of the engaging tube portion 37 climbs over the inner peripheral engaging projection 92 of the transition plug body Ec and fits into the inner peripheral surface of the cylindrical wall 91, and almost simultaneously with the completion of screwing, the inner peripheral locking projection 44 of the side wall 36 of the intermediate cap Cc climbs over the outer peripheral locking projection 13 of the dispensing tube 10 of the middle plug Bc and fits into place, preventing it from coming off and causing the lower end of the side wall 36 to abut against the inner peripheral edge of the ring-shaped upper wall 9. Furthermore, the reverse thread wedge-shaped recess 98 of the side wall 36 and the reverse thread stopper 94 of the ring-shaped upper wall 9 fit together, stopping the reverse thread rotation and aligning the cap Cc, thereby setting the middle cap Cc onto the middle plug Bc. It should be noted that the engaging tubular portion 37 of the intermediate cap Cc and the inner peripheral engaging protrusion 92 of the tubular wall 91 of the transition plug Ec may be omitted.

[0073] The reverse female thread portion 97 of the sealed cylindrical portion 95 of the intermediate cap Cc screws into the reverse male thread portion 93 of the cylindrical wall 91 of the transition plug body Ec, and the reverse thread wedge-shaped recess 98 meshes with and engages with the reverse thread stopper 94, thereby attaching the intermediate cap Cc and the transition plug body Ec so that they do not rotate relative to the inner plug Bc, and therefore the thin-walled weakened portion 11 of the inner plug Bc will not break.

[0074] In addition, when the overcap D is placed on the cap and rotated in the screwing direction, as the screwing progresses, the inner plug Bc and the intermediate cap Cc are fixed together by the reverse thread engagement between them, and the intermediate cap Cc does not rotate in response to the rotation of the overcap D in the screwing direction, and instead rotates freely between the external teeth 43 on the side wall 36 of the intermediate cap Cc and the internal ratchet teeth 60 of the overcap D.

[0075] When the overcap D is opened and rotated in the unscrewing direction, the external teeth 43 of the side wall 36 of the intermediate cap Cc engage with the ratchet internal teeth 60 of the overcap D, and the middle plug Bc and the intermediate cap Cc are screwed together in the reverse thread, causing the transition plug body Ec to rotate relative to the middle plug Bc, breaking the thin-walled weakened portion 11, and detaching the transition plug body Ec from the middle plug Bc, opening the spout in the spouting tube 10. The other configurations and effects are the same as those of the first embodiment. [Industrial Applicability]

[0076] The uncorking cap of the present invention can be stably attached without misalignment of the center position when the overcap is screwed onto the inside plug, and by using an intermediate cap, the thin, weakened portion connecting the inside plug and the transition plug body is not broken when the cap is attached, improving the setting ability. This is particularly ideal for inside plugs with a small pouring outlet diameter, and can be widely used for containers for food, beverages, seasonings, etc. [Explanation of symbols]

[0077] A Container body B, Ba, Bb, Bc stopper C, Ca, Cb, Cc intermediate cap D. Overcap E, Ea, Eb, Ec transition plug α, β range 1 Mouth 2 Locking ridges 4. Mounting part 5 Outer cylinder 6 Inner cylinder 8 Threaded wall 9 Ring-shaped upper wall 10 Pour tube 10a Lip 11 Thin weakened part 13 Outer periphery locking protrusion 14, 64, 78, 96 Plug engagement part 15, 65, 90 Bottom wall 16, 66, 76, 91 Cylindrical wall 18, 68, 88, 92 Inner circumference engagement protrusion 19 Large protrusion (outward protrusion) 21 First Stopper 22 Step section 23 Sound output protrusion 25 Male thread 27 Second Stopper 28 Locking part 29 Notch recess 30 Sorting mechanism 35 Upper Wall 36 side wall 37 Attachment tube 38, 70, 85, 95 Sealed cylinder part 39, 80 Outer circumferential engagement protrusion 40 Small protrusion (inward protrusion) 42 Outer mounting protrusion 43 Outer teeth 43a Slope 43b Contact surface 44 Inner circumference locking protrusion 45 First wedge-shaped recess 46, 72, 84, 99 Intermediate cap engagement part 50 Top Wall 51 Outer wall 52 Threaded cylinder 52a Reinforcement rib 53 Mounting tube 55 Female thread 56 Second wedge-shaped recess 58 Inner circumference mounting protrusion 59 Engagement recess 60 Ratchet inner teeth 60a, 71a Deformed arms 60b, 71b Contact part 61 Sound piece 69 Inner outer teeth 71 Inner ratchet inner teeth 75 Ring-shaped bottom wall 77 Ceiling wall 79 Concave step 82 Outward Rib 87 Inward Rib 93 Reverse male thread 94 Reverse thread stopper 97 Reverse female thread 98 Reverse Thread Wedge Recess

Claims

1. The container comprises an inner plug which is attached to the mouth of the container body and has a pouring tube for pouring out the contents standing thereon, an intermediate cap which is attached to cover the pouring tube of the inner plug, and an overcap which engages with the intermediate cap and is screwed onto the inner plug, The inner plug is connected to the inner circumferential surface of the pouring cylinder via a thin-walled weakened portion, and has a transition plug body provided with an inner plug engaging portion that engages with the intermediate cap, and a male screw portion provided on the outside of the pouring cylinder, the intermediate cap has a top wall, a side wall extending vertically from a periphery of the top wall, and an intermediate cap engaging portion extending vertically from the top wall and engaging with the inner plug engaging portion; The overcap is characterized by having a top wall, a mounting tubular portion hanging down from the top wall and engaging with the side wall of the intermediate cap in a ratchet manner, and a female threaded portion that can be screwed into the male threaded portion of the inner plug.

2. The transition plug has a bottom wall connected via a thin-walled weakened portion and a cylindrical wall standing upright from the bottom wall, The inside plug engaging portion has an inner peripheral engaging protrusion formed on the inner peripheral surface of the cylindrical wall and an outward protrusion formed on the outer peripheral surface of the cylindrical wall, The extractor cap according to claim 1, characterized in that the intermediate cap engagement portion has an engagement tubular portion that hangs down from the upper wall and has an outer circumferential engagement protrusion formed thereon that can engage with the inner circumferential engagement protrusion, and a sealing tubular portion that is in close contact with the inner periphery of the pouring tube and has an inward protrusion formed on its inner periphery that can engage with the outward protrusion.

3. The transition plug has a bottom wall connected via a thin-walled weakened portion and a cylindrical wall erected from the bottom wall, The inner plug engagement portion has an inner peripheral engagement protrusion formed on the inner periphery of the cylindrical wall, The extractor cap according to claim 1, characterized in that the intermediate cap engagement portion has an engaging tubular portion that hangs down from the upper wall and has an outer circumferential engagement protrusion that can engage with the inner circumferential engagement protrusion, and a sealing tubular portion that is in close contact with the inner circumferential surface of the pouring tube and engages with the outer circumferential surface of the tubular wall in a ratchet manner.

4. The transition plug has a bottom wall connected via a thin-walled weakened portion and a cylindrical wall erected from the bottom wall, The inside plug engaging portion has an outward rib formed on the outer periphery of the cylindrical wall and an outer periphery engaging protrusion formed below the outward rib, The extractor cap as described in claim 1, characterized in that the intermediate cap engagement portion has a sealing tubular portion that hangs down from the upper wall, is in close contact with the inner circumference of the pouring tube, and has an inward rib formed on its inner circumference that can engage with the outward rib, and an inner engaging protrusion formed at the lower end of the inner circumference of the sealing tubular portion and that can engage with the outer engaging protrusion.

5. The transition plug has a bottom wall connected via a thin-walled weakened portion and a cylindrical wall erected from the bottom wall, The inner plug engagement portion has a male inverted thread portion formed on the outer periphery of the cylindrical wall, the intermediate cap engagement portion is suspended from the upper wall, is in close contact with the inner periphery of the pouring tube, and has a sealed tube portion formed on its inner periphery with a reverse female thread portion that screws into the reverse male thread portion; 2. The extractor cap according to claim 1, wherein the reverse male thread portion and the reverse female thread portion are threaded with a reverse thread relative to the threading of the male thread portion of the inside plug and the female thread portion of the overcap.

6. The inner plug has an outer circumferential locking projection that projects between the pouring tube and the male screw portion, 6. The extractor cap according to claim 1, wherein the intermediate cap has an inner peripheral locking projection at a lower end of the side wall, the inner peripheral locking projection being engaged with the outer peripheral locking projection.

Images