Dispensing cap

Abstract

To provide a dispensing cap capable of preventing liquid from accumulating inside.SOLUTION: A dispensing cap has a top wall portion 10 connected to an upper portion of a mounting cylinder portion 5 that is attached to a mouth and neck portion of a container body, and includes a cap body 4 with a dispensing cylinder 18 standing up from the top wall portion 10, and an upper lid 40 of which lid peripheral wall 44 suspended from a peripheral end of a top plate 42 is connected to the mounting cylinder portion 5 via a hinge 7 and on which a seal cylinder 50 tightly fitted into the dispensing cylinder 18 is vertically installed from the top plate 42. A support cylinder 20 is vertically installed from the top wall portion 10 so as to communicate with the dispensing cylinder 18. The support cylinder 20 has a flange-shaped bottom wall 26 facing inward attached to a lower end of a cylinder peripheral wall 22. At the inner peripheral end of the flange-shaped bottom wall 26, an insertion fitting rod 30 extending in a vertical direction via a fracture portion 28 is continuously provided. The fracture portion 28 is fractured by pushing-up operation of the insertion fitting rod 30 from outside, and the insertion fitting rod 30 is fitted into the seal cylinder 50.SELECTED DRAWING: Figure 1

Description

Technical Field

[0004] , , , , ,

[0001] The present invention relates to a pouring cap.

Background Art

[0002] As this type of pouring cap, it includes a capped cap body for attaching to the neck portion of a container body, and an upper lid in which a lid peripheral wall vertically provided from the peripheral end portion of the top plate is connected to the cap body via a hinge. A pouring tube stands up from the peripheral end of a liquid passage hole opened in the top wall portion of the cap body, and a seal tube vertically provided from the top plate is tightly fitted into the pouring tube, and it is known to have a basic structure (Patent Document 1). Furthermore, there is known one having a substantially similar basic structure to Patent Document 1 and provided with a flow rate adjusting mechanism for regulating the flow rate of the discharged liquid (Patent Document 2). The flow rate adjusting mechanism vertically provides a cage-shaped rectifying cylinder portion having a plurality of vertical side hole portions from around the liquid passage hole and projecting an inward flange from the lower end of a cylinder wall, and projects an upward projecting portion in the shape of a capped cylinder via the inward flange.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the cap of Patent Document 1, in order to ensure sealing performance, the pouring tube of the cap body is tightly fitted with a seal tube vertically provided from the top plate of the upper lid. However, during use, liquid accumulates inside the seal tube, and there is a possibility of liquid contamination. Also, in the cap of Patent Document 2, there is a possibility that liquid accumulates inside the cage-shaped rectifying cylinder.

[0005] The object of the present invention is to provide a dispensing cap that can prevent liquid from accumulating inside. [Means for solving the problem]

[0006] The first means has a top wall portion 10 connected to the upper part of the mounting cylinder portion 5 for attaching to the neck of the container body, and a cap body 4 from which a dispensing cylinder 18 is erected, The lid peripheral wall 44, which is suspended from the peripheral edge of the top plate 42, is connected to the mounting cylinder portion 5 via a hinge 7, and the top lid 40 has a sealing cylinder 50 that is tightly fitted into the dispensing cylinder 18 suspended from the top plate 42. It is equipped with, A support cylinder 20 is suspended from the top wall portion 10, connected to the aforementioned dispensing cylinder 18, and having an inwardly facing flange-shaped bottom wall 26 attached to the lower end of the cylinder peripheral wall 22. An insertion rod 30 extending vertically via a fractured portion 28 is connected to the inner circumferential end of the flange-shaped bottom wall 26. Before the cap body 4 is attached to the neck of the container body, the break portion 28 is broken by an external pushing operation of the insertion rod 30, the insertion rod 30 detaches from the flange-shaped bottom wall 26 and is fitted into the seal cylinder 50, and is configured to close the cylindrical hole of the seal cylinder 50. 、 The inside of the flange-shaped bottom wall 26 is formed such that a bottom hole 29 is opened when the insertion rod 30 is pushed up and detaches from the flange-shaped bottom wall 26. Ta.

[0007] In this method, as shown in Figures 1 and 6, a dispensing tube 18 is erected from the top wall portion 10 of the cap body 4, and a sealing tube 50 suspended from the top plate 42 of the top lid 40 is tightly fitted inside the dispensing tube 18. At the same time, a bottomed support tube 20 is suspended from the top wall portion 10, communicating with the dispensing tube 18. A fitting rod 30 extending vertically is connected to the inner circumferential end of the inwardly facing flange-shaped bottom wall 26 of the support cylinder 20 via a broken portion 28. As shown in Figures 3 and 8, the fractured portion 28 is broken by an external pushing operation of the insertion rod 30, causing the insertion rod 30 to detach from the flange-shaped bottom wall 26 and be inserted into the seal cylinder 50, thereby sealing the cylindrical hole of the seal cylinder 50. With this structure, the cylindrical hole of the sealing cylinder 50 is sealed by the insertion rod 30, thus preventing liquid from accumulating inside the cylindrical hole. Furthermore, in this method, as shown in Figures 3 and 8, a bottom hole 29 is formed on the inside of the flange-shaped bottom wall 26, as a trace left when the insertion rod 30 detaches from the flange-shaped bottom wall 26 due to the pushing operation of the insertion rod 30. With this structure, the bottom hole 29 acts as a drainage port, preventing liquid from accumulating inside the support cylinder 20.

[0008] The second means has the first means, and the cylindrical circumferential wall 22 of the support cylinder 20 is provided with side holes 24 which are liquid passage holes. ru.

[0009] In this method, as shown in Figures 1 and 6, side holes 24, which are liquid passage holes, are drilled in the cylindrical circumferential wall 22 of the support cylinder 20. 。

[0010] The third means has the first means or the second means, and the upper part of the insertion rod 30 is formed at the reduced diameter end 30a. This reduced diameter end 30a is located inside the dispensing cylinder 18 when the top lid 40 is closed. Location The extension length H2 of the insertion rod 30 upward from the fractured portion 28 is set accordingly.

[0011] In this method, as shown in Figures 1 and 6, the upper part of the insertion rod 30 is formed as a reduced diameter end 30a. Then, when the top lid 40 is closed, this reduced diameter end 30a is inside the dispensing cylinder 18. Location The extension length H2 of the insertion rod 30 upward from the fractured portion 28 is set accordingly. This structure allows the insertion rod 30 to be securely fitted into the seal cylinder 50 by an external pushing operation.

[0012] The fourth means has any of the first to third means and has a locking projection 54 attached to the lower inner surface of the seal cylinder 50, On the lower outer surface of the insertion rod 30, a concave receiving portion 34 is provided which engages with the locking projection 54 when the insertion rod 30 is fitted into the seal cylinder 50. The locking projection 54 and the concave receiving portion 34 form a locking means E for maintaining the fitted state of the insertion rod 30 in the seal cylinder 50.

[0013] In this means, as shown in FIGS. 2(A) and 7(A), the locking projection 54 is provided on the lower inner surface of the seal cylinder 50, and on the lower outer surface of the insertion rod 30, when the insertion rod 30 is fitted into the seal cylinder 50 (see FIGS. 3 and 8), a concave receiving portion 34 that engages with the locking projection 54 is provided. The locking projection 54 and the concave receiving portion 34 form a locking means E for maintaining the fitted state of the insertion rod 30 in the seal cylinder 50. According to this structure, it is possible to reliably prevent the insertion rod 30 from coming out of the seal cylinder 50.

Effect of the Invention

[0014] According to the invention related to the first means, the seal cylinder 50 of the upper lid 40 is tightly fitted into the pouring cylinder 18 standing up from the top wall portion 10 of the cap body 4 and communicated with the pouring cylinder 18, and a bottomed support cylinder 20 is vertically provided from the top wall portion 10. An insertion rod 30 extending in the vertical direction is continuously provided at the inner peripheral end of the flange-shaped bottom wall 26 of the support cylinder 20 via a breaking portion 28. Before the cap body 4 is attached to the neck of the container body, By the upward pushing operation of the insertion rod 30 from the outside, The aforementioned the breaking portion 28 is broken, the insertion rod 30 is detached from the flange-shaped bottom wall 26 and closes the cylindrical hole of the seal cylinder 50, so The aforementioned it is possible to prevent liquid from accumulating in the seal cylinder 50. Also according to the invention related to the second 1 means, since the bottom hole portion 29 is opened inside the flange-shaped bottom wall 26 as a mark where the insertion rod 30 is detached from the flange-shaped bottom wall 26 by the upward pushing operation, the bottom hole portion 29 serves as a drain port and it is possible to prevent liquid from accumulating in the support cylinder 20. According to the invention related to the third means, since the reduced-diameter end portion 30a, which is the upper part of the insertion rod 30, is positioned in the pouring cylinder 18 in the closed state of the upper lid 40, the insertion rod 30 can be surely fitted into the seal cylinder 50 by the pushing-up operation. According to the invention related to the fourth means, the fitting state of the insertion rod 30 in the seal cylinder 50 is maintained by the locking projection 54 attached to the lower inner surface of the seal cylinder 50 and the concave receiving portion 34 provided on the lower outer surface of the insertion rod 30, so that the insertion rod 30 can be surely prevented from coming out of the seal cylinder 50.

Brief Description of the Drawings

[0015] [Figure 1] It is a cross-sectional view of the pouring cap according to the first embodiment of the present invention as viewed from the side. [Figure 2] It is a view showing the structure of the main part of the pouring cap shown in FIG. 1. FIG. 1(A) is a cross-sectional view of the main part as viewed from the side, and FIG. 1(B) is a bottom view of the main part. [Figure 3] It is an explanatory view of the operation of the pouring cap shown in FIG. 1. [Figure 4] It is a cross-sectional view of the structure of the pouring cap shown in FIG. 1 in the unfolded state as viewed from the side. [Figure 5] It is a view of the structure of FIG. 4 as viewed from above. FIG. 4(A) is an overall view of the structure, FIG. 4(B) is an enlarged view of the portion marked with reference numeral X in FIG. 4(A), and FIG. 4(C) is an enlarged view of the portion marked with reference numeral Y in FIG. 4(A). [Figure 6] It is a cross-sectional view of the pouring cap according to the second embodiment of the present invention as viewed from the side. [Figure 7] It is a view showing the structure of the main part of the pouring cap shown in FIG. 6. FIG. 6(A) is a cross-sectional view of the main part as viewed from the side, and FIG. 6(B) is a bottom view of the main part. [Figure 8] It is an explanatory view of the operation of the pouring cap shown in FIG. 6.

Best Mode for Carrying Out the Invention

[0016] Figures 1 to 5 show a dispensing cap 2 according to the first embodiment of the present invention. As shown in Figure 1, this dispensing cap 2 is formed from a cap body 4 and an upper lid 40. As shown in Figure 4, the dispensing cap 2 can be molded with the top lid 40 rotated 180° relative to the cap body 4 (unfolded state). The dispensing cap 2 is intended to be attached to the neck portion 102 of the container body 100, which is shown by dashed lines in Figure 1. In the illustrated example, an outer rib 104 is attached to the outer surface of the neck portion 102. For the sake of explanation, the basic structure of the dispensing cap of the present invention will be described first.

[0017] The cap body 4 has a mounting cylinder portion 5 for attaching to the mouth neck portion 102, and a top wall portion 10 is connected to the upper end of this mounting cylinder portion 5.

[0018] An inner rib 6 is attached to the lower inner surface of the mounting cylinder portion 5 for engaging with the lower surface of the outer rib 104. The upper part of the mounting cylinder portion 5 is connected to the upper cover 40 via a hinge 7. For the sake of explanation, in this specification, the right side of Figure 1(A) will be referred to as "rear," the left side as "front," and the directions perpendicular to the plane of the paper as "left and right." In this embodiment, as shown in Figure 1, a groove 8 is formed that extends downward from the upper end surface of the mounting cylinder portion 5. This groove 8 can be formed over almost the entire circumference of the mounting cylinder portion 5, dividing the upper part of the mounting cylinder portion 5 into an inner circumference portion and an outer circumference portion. Specifically, as shown in Figure 5(A), the groove 8 starts at a location adjacent to a vertical cut n drilled in the upper outer surface of the mounting cylinder portion 5 (a location close to the hinge 7), passes through the vicinity of the hinge 7, and extends to the opposite side of the cut n, where it terminates. A non-breakable thick-walled portion m is formed between the end of the groove 8 and the cut n. As shown in Figure 1, a thin-walled weakened portion 9 is formed between the inner end of the bottom surface of the groove 8 and the inner surface of the mounting cylinder portion 5. Furthermore, when the top lid 40 is pulled outward in the open state, the weakened portion 9 breaks down to the thickened portion m, and when lifted, the container body and the dispensing cap can be easily separated and disposed of. Furthermore, in this embodiment, as shown in Figure 5(A), drainage holes h are formed at appropriate locations in the circumferential direction of the mounting cylinder portion 5, penetrating from the bottom of the groove 8 to the inner surface of the mounting cylinder portion.

[0019] As shown in Figure 1, the top wall portion 10 is connected to the upper end of the mounting cylinder portion 5. An annular engaging projection 11 is raised from the peripheral end of this top wall portion 10. Furthermore, an inner ring 12 is vertically attached from the lower surface of the top wall portion 10, maintaining a certain distance from the mounting cylinder portion 5, and the mouth neck portion 102 is sandwiched between these mounting cylinder portion and inner ring. A liquid passage hole 14 is opened in a suitable location on the top wall portion 10 (in the illustrated example, a forward position away from the hinge 7) located inside the inner ring 12. A dispensing cylinder 18 is erected around this liquid passage hole 14.

[0020] The top cover 40 has a lid periphery wall 44 that extends downward from the peripheral edge of the top plate 42, and the lower end of this lid periphery wall 44 is connected to the rear wall portion of the mounting cylinder 5 via a hinge 7. The lower end of the inner surface of the lid periphery wall 44 is provided with a recessed area 47 that engages with the engaging projection 11. In a preferred illustrated example, as shown in Figure 1, a canopy-like portion 48 is provided that protrudes downward and inward, covering the area from the upper side of the engaged recess 47 to the inner upper end of the engaging projection 11. Furthermore, as shown in Figure 5(A), multiple (three in the illustrated example) vertical grooves 49 are formed in appropriate locations on the lid perimeter wall 44. These vertical grooves 49 are vertically formed by cutting out the canopy-like portion 48 from the upper end to the lower end of the inner surface of the lid perimeter wall. Furthermore, as shown in Figure 4, a recessed groove c is formed on the inner surface of the engaged recess 47, extending laterally from the vertical groove 49. Furthermore, a knob 46 protrudes forward from the lower end of the front wall portion of the lid peripheral wall 44. Furthermore, a sealing cylinder 50 is suspended from the top plate 42. When the lid is closed, this sealing cylinder 50 is tightly fitted inside the dispensing cylinder 18, and constantly seals the dispensing cylinder 18. An internal sealing means S is formed between the outer surface of the sealing cylinder 50 and the corresponding area of ​​the cap body 4 (mainly the inner surface of the dispensing cylinder 18). This will be described later. Furthermore, an annular thin-walled portion 56 for absorbing internal pressure is formed on the underside of the top plate 42 so as to surround the seal cylinder 50.

[0021] In this invention, a support cylinder 20 is suspended from around the liquid passage hole 14 of the top wall portion 10, communicating with the dispensing cylinder 18. This support cylinder 20 has the role of supporting the insertion rod 30, which will be described later, and the role of adjusting the amount of liquid flowing into the liquid passage hole 14. As shown in Figure 2(A), the support cylinder 20 has a cylindrical circumferential wall 22 connected to the top wall portion 10, and an inward-facing flange-shaped bottom wall 26 attached to the lower end of the cylindrical circumferential wall 22. The cylindrical circumferential wall 22 has side holes 24 which serve as liquid passage holes. In the illustrated example, as shown in Figure 2(B), a pair of front and rear side holes 24 are opened, but their number and orientation can be changed as appropriate. However, when multiple side holes 24 are provided, it is preferable to arrange them equiangled in the circumferential direction of the cylindrical circumferential wall 22. In the illustrated example, the side hole 24 is formed as a vertically elongated slot, but its shape can be changed as appropriate. As shown in Figure 2(B), the flange-shaped bottom wall 26 is formed in a substantially annular shape, but this shape can be changed as appropriate. A series of insertion rods 30 are installed on the inside of the flange-shaped bottom wall 26.

[0022] The insertion rod 30 is connected to the inner peripheral edge of the flange-shaped bottom wall 26 via a broken portion 28 and is supported in a vertical position. The insertion rod 30 is then inserted into the seal cylinder 50 by pushing it up from below with a jig (for example, a push-up rod), as shown in Figure 4, and is designed to be fitted so that it cannot be removed. This seals the opening in the sealing cylinder 50, preventing liquid from accumulating inside the sealing cylinder 50, for example, while the user is using the cap. In this embodiment, the fracture portion 28 is formed as a fractureable support piece that is equiangled at multiple locations (four locations in the illustrated example) on the inner circumference of the flange-shaped bottom wall 26, as shown in Figure 2(B). However, the structure can be modified as appropriate, and a thin fracture line may be formed along the entire inner circumference of the flange-shaped bottom wall 26.

[0023] In this embodiment, as shown in Figure 1, the insertion rod 30 extends both downward and upward from the location where the fractured portion 28 is formed, with an extension length H1 and an extension length H2. The upward extension length H2 should be designed such that the upper part of the insertion rod 30 is inserted into the lower part of the seal cylinder 50 before the pushing-up operation is performed. By doing so, the insertion rod 30 can be securely fitted into the sealing cylinder 50 by the aforementioned pushing operation. In a preferred illustrated example, the lower part of the insertion rod 30 is formed as a first rod portion 30b with a diameter large enough to be tightly fitted into the seal cylinder 50, and the upper part of the insertion rod 30 is formed as a second rod portion (or reduced diameter end) 30a with a smaller diameter than the lower part. The second rod portion 30a is then inserted into the seal cylinder 50 with some play (loose insertion). Furthermore, the upward extension length H1 is designed to be smaller than the height difference H3 between the upper end of the insertion rod 30 and the lower surface of the top plate 42 in the state shown in Figure 1. In this way, as shown in Figure 3, when the insertion rod 30 is pushed up to the back of the seal cylinder 50, it completely detaches from the inside of the flange-shaped bottom wall 26. As a result, a bottom hole 29 is opened on the inside of the flange-shaped bottom wall 26, as shown in Figure 3, representing the trace left by the insertion rod 30 detaching from the flange-shaped bottom wall 26. This bottom hole 29 serves as a drainage port, and after use of the container with the dispensing cap, the liquid inside the support cylinder 20 is discharged into the container body 100, thus preventing liquid from accumulating inside the support cylinder 20. Furthermore, the bottom hole 29 also functions as a discharge port.

[0024] In this embodiment, as shown in Figure 5(C), a locking projection 54 is provided on the lower inner surface of the seal cylinder 50. Furthermore, as shown in Figures 1 and 2(B), a concave receiving portion 34 is provided on the lower outer surface of the insertion rod 30. This concave receiving portion 34 is formed to engage with the locking projection 54 when the insertion rod 30 is fitted into the seal cylinder 50 (see Figure 3). Furthermore, the locking projection 54 and the concave receiving portion 34 form a locking means E that maintains the fitted state of the insertion rod 30 inside the seal cylinder 50. This ensures that the insertion rod 30 is more securely fitted into the seal cylinder 50. In this embodiment, a single concave receiving portion 34 with an undercut shape (or a downward-facing stepped shape) is provided around the lower end of the outer circumferential surface of the insertion rod 30, and a plurality of locking protrusions 54 (four in the illustrated example) are projected inward from the lower end of the inner circumferential surface of the seal cylinder 50, which are arranged at equal intervals in the circumferential direction. Furthermore, it is preferable that the concave receiving portion 34 has a downward-facing stepped shape, and that the corners of the portion that engages with the locking projection 54 are made into an edge shape. This allows the locking projection 54 to bite into the corners of the concave receiving portion 34, enabling a more secure fit. The protruding length of the locking projection 54 is set so that the larger diameter portion (second rod portion 30a) of the insertion rod 30 can overcome the locking projection 54 when inserting the insertion rod 30 into the seal cylinder 50. Furthermore, in the illustrated example, the fractured portion 28 of the flange-shaped wall portion 26 is connected to a position higher than the concave receiving portion 34 of the insertion rod 30. The arrangement, number, and structure of the concave receiving portion 34 and the locking projection 54 can be changed as appropriate.

[0025] In the illustrated example, the lower end 32 of the insertion rod 30 is formed in a downward-facing conical shape. As shown in Figure 3, when the insertion rod 30 abuts against the top plate 42, the lower end 32 of the insertion rod 30 is formed to protrude downward from the lower end surface of the seal cylinder 50.

[0026] Furthermore, in this embodiment, the inner sealing means S between the outer surface of the sealing cylinder 50 and the opposing portion of the cap body 4 is formed by a main sealing portion s1 and an auxiliary sealing portion s2, as shown in Figure 1. Specifically, as shown in Figure 2(A), the seal cylinder 50 has a large outer diameter portion 50a from which a smaller outer diameter portion 50b extends downward via an annular downward stepped portion 53. Furthermore, in the cap body 4, the dispensing cylinder 18 is made larger in diameter than the liquid passage hole 14, and an annular upward step portion 16 is formed between the dispensing cylinder 18 and the liquid passage hole 14. The upward step portion 16 and the downward step portion 53 are arranged to face each other with a certain distance between them. The main sealing portion s1 consists of a large-diameter sealing surface portion 51, which is the outer surface of the large outer diameter portion 50a of the sealing cylinder 50, and a large-diameter receiving surface 19, which is the inner surface of the dispensing cylinder 18. Furthermore, the auxiliary sealing portion s2 consists of a small-diameter sealing surface portion 52, which is the outer surface of the small-diameter portion 50b of the sealing cylinder 50, and a small-diameter receiving surface 15, which is the edge of the liquid passage hole 14. In a preferred illustrated example, the small-diameter sealing surface portion 52 is formed as a tapered surface with a small diameter at its lower end. With this structure, even if, for example, a container with the dispensing cap 2 attached is dropped on the floor and the dispensing cap 2 hits the floor surface, the two-stage configuration of the main sealing part s1 and the auxiliary sealing part s2 ensures reliable sealing. In a sealing means consisting of a single sealing surface and a receiving surface, an impact can cause the sealing surface to move (shift) relative to the receiving surface, potentially creating a temporary gap between them. In contrast, with the configuration of this embodiment, even if the large-diameter sealing surface 51 moves relative to the large-diameter receiving surface 19, the upward-facing step 16 bites into the small-diameter sealing surface 52, and the small-diameter sealing surface 52 adheres tightly to the small-diameter receiving surface 15. Therefore, the sealing performance is not impaired.

[0027] In the above configuration, when using the dispensing cap 2 of the present invention, before attaching it to the neck portion 102 of the container body 100, it is advisable to fix the mounting cylinder portion 5 and the upper lid 40 of the cap body 4 in a suitable manner so as not to move, in the state shown in Figure 1, and to push up the lower end portion 32 of the insertion rod 30 using a jig (not shown). As a result, as shown in Figure 3, the insertion rod 30 is inserted into the sealing cylinder 50, and the cylindrical hole of the sealing cylinder 50 is sealed. This prevents liquid from entering and accumulating inside the sealing cylinder 50 during use. Furthermore, the bottom hole 29 opens to the inside of the flange-shaped bottom wall 26, as a trace left when the insertion rod 30 detaches from the flange-shaped bottom wall 26 of the support cylinder 20. In this state, when the dispensing cap 2 is attached to the neck 102 of the container body 100, the top lid 40 is opened, and the container body 100 is tilted, the liquid inside the container body 100 passes through the side holes 24, the bottom holes 29 and the liquid passage holes 14 and is discharged to the outside from the dispensing cylinder 18. In this process, the liquid passes through the side holes 24 of the support cylinder 20, thereby regulating the flow rate of the liquid discharged from the dispensing cylinder 18 and preventing excessive discharge. After dispensing the required liquid, the container body 100 is returned to an upright position. At this time, the liquid in the support cylinder 20 returns to the container body 100 side through the bottom hole 29. Therefore, it is possible to prevent liquid from remaining in the support cylinder 20, as would be the case in a structure without a bottom hole 29. This prevents the inside of the cap from becoming contaminated with residual liquid (liquid staining).

[0028] Other embodiments of the present invention will be described below. In these descriptions, the same structures as those in the first embodiment will not be explained.

[0029] Figures 6 to 8 show a dispensing cap according to a second embodiment of the present invention. This embodiment is a modification of the configuration of the concave receiving portion 34 in the first embodiment. In other words, in this embodiment, instead of the undercut shape of the first embodiment, a recess is formed on the lower part of the outer circumferential surface of the insertion rod 30, at a certain distance from the lower end portion 32. In the illustrated example, the concave receiving portion 34 is formed as an annular groove on the outer surface of the insertion rod 30, but its shape can be changed as appropriate. [Explanation of symbols]

[0030] 2…Dispensing cap 4…Cap body 5…Mounting cylinder 6…Inner rib 7…Hinge 8...kerf 9...weakened part 10...Top wall part 11...Engaging protrusion 12...Inner ring 14...Liquid hole 15...Small diameter receiving surface 16...Upward step section 17...Inclined wall section 18…Dispensing cylinder 19…Large diameter receiving surface 20...Support cylinder 22...Cylinder circumferential wall 24...Side hole 26...Flange-shaped bottom wall 28...Fracture section 29...Bottom hole section 30...Insertion rod 30b...First rod part 30a...Second rod part (reduced diameter end) 32...Lower end (conical end) 34...Concave receiving part 40...Top lid 42...Top plate 44...Lid perimeter wall 46...Knob 47...Engaged recess 48...Eave shaped part 49...Vertical groove part 50...Seal cylinder 50a...Large outer diameter section 50b...Small outer diameter section 51...Large diameter sealing surface section 52...Small diameter sealing surface portion 53...Downward stepped portion 54...Locking projection portion 56...Annular thin-walled portion 100...Container body 102...Nose / neck 104...Outer rib c... recessed groove E... locking means h... drainage hole m... thickened section n... notch S...Internal sealing means s1...Main sealing part s2...Auxiliary sealing part T...External sealing means

Claims

1. The cap body (4) has a top wall portion (10) connected to the upper part of the attachment cylinder portion (5) for attaching to the neck of the container body, and a dispensing cylinder (18) is erected from this top wall portion (10), The lid periphery wall (44) extending from the peripheral edge of the top plate (42) is connected to the mounting cylinder portion (5) via a hinge (7), and the top lid (40) has a sealing cylinder (50) extending from the top plate (42) into the dispensing cylinder (18) and It is equipped with, A support cylinder (20) is suspended from the top wall portion (10) and connected to the aforementioned dispensing cylinder (18), with an inwardly facing flange-shaped bottom wall (26) attached to the lower end of the cylinder circumferential wall (22). A fitting rod (30) extending vertically via a fractured portion (28) is connected to the inner circumference end of the flange-shaped bottom wall (26). Before the cap body (4) is attached to the neck of the container body, the break portion (28) is broken by pushing up the insertion rod (30) from the outside, the insertion rod (30) detaches from the flange-shaped bottom wall (26) and is fitted into the seal cylinder (50), and is configured to close the cylindrical hole of the seal cylinder (50). A dispensing cap characterized in that the inside of the flange-shaped bottom wall (26) is formed such that a bottom hole (29) is opened when the insertion rod (30) is pushed up and the insertion rod (30) is detached from the flange-shaped bottom wall (26).

2. The dispensing cap according to claim 1, characterized in that a side hole portion (24), which is a liquid passage hole, is drilled in the cylindrical peripheral wall (22) of the support cylinder (20).

3. The upper part of the insertion rod (30) is formed at the reduced diameter end (30a), The dispensing cap according to claim 1 or 2, characterized in that the extension length (H2) of the insertion rod (30) upward from the broken portion (28) is set such that the reduced diameter end (30a) is located inside the dispensing cylinder (18) when the top lid (40) is closed.

4. A locking projection (54) is provided on the lower inner surface of the seal cylinder (50), A recessed receiving portion (34) is provided on the lower outer surface of the insertion rod (30) that engages with the locking projection (54) when the insertion rod (30) is fitted into the seal cylinder (50). The dispensing cap according to any one of claims 1 to 3, characterized in that a locking means (E) is formed by these locking projections (54) and recessed receiving portions (34) to maintain the fitted state of the insertion rod (30) inside the sealing cylinder (50).

Images