JP2022057615A - Dispensing cap - Google Patents

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

The present invention relates to a pouring cap.

As this type of pouring cap, a bulging cap body for attaching to the mouth and neck of the container body and a top lid in which the peripheral wall of the lid hung from the peripheral end of the top plate is connected to the cap body via a hinge. The pouring cylinder was erected from the peripheral end of the liquid passage hole opened in the top wall of the cap body, and the sealing cylinder suspended from the top plate was tightly fitted in the pouring cylinder. Those having a basic structure are known (Patent Document 1).
Further, there is known one having a basic structure substantially the same as that of Patent Document 1 and provided with a flow rate adjusting mechanism for regulating the flow rate of the discharged liquid from the pouring cylinder (Patent Document 2).
In the flow rate adjusting mechanism, a cage-shaped rectifying cylinder portion having an inward flange protruding from the lower end of a cylinder wall having a plurality of vertical side holes is vertically installed from the periphery of the liquid passage hole, and the inside thereof. A ridged tubular protrusion is projected upward via a facing flange.

JP-A-2020-138755 JP-A-2020-083445

The cap of Patent Document 1 has a structure in which the injection cylinder of the cap body is tightly fitted with a seal cylinder that hangs down from the top plate of the upper lid in order to ensure the sealing performance. There was a possibility that the liquid would collect inside the and cause liquid stains.
Further, in the cap of Patent Document 2, there is a possibility that liquid may collect inside the cage-shaped rectifying cylinder.

An object of the present invention is to provide a pouring cap that can prevent liquid from accumulating inside.

The first means is to have a top wall portion 10 connected to the upper part of the mounting cylinder portion 5 to be attached to the mouth and neck of the container body, and the cap body in which the dispensing cylinder 18 is erected from the top wall portion 10. 4 and
The lid peripheral wall 44 suspended from the peripheral end of the top plate 42 is connected to the mounting cylinder portion 5 via a hinge 7, and the seal cylinder 50 is tightly fitted from the top plate 42 into the dispensing cylinder 18. Equipped with a top lid 40 and a hanging top lid 40
A support cylinder 20 having an inward flange-shaped bottom wall 26 attached to the lower end of the cylinder peripheral wall 22 is hung from the top wall portion 10 in communication with the dispensing cylinder 18.
At the inner peripheral end of the flange-shaped bottom wall 26, a fitting rod 30 extending in the vertical direction via the fractured portion 28 is continuously provided.
The broken portion 28 is broken by the pushing-up operation of the fitting rod 30 from the outside, the fitting rod 30 is separated from the flange-shaped bottom wall 26 and fitted into the seal cylinder 50, and the seal cylinder 50 is fitted. It is configured to close the cylinder hole.

In this means, as shown in FIGS. 1 and 6, the dispensing cylinder 18 is erected from the top wall portion 10 of the cap body 4, and the sealing cylinder 50 is vertically suspended from the top plate 42 of the upper lid 40 in the dispensing cylinder 18. The bottomed support cylinder 20 is vertically hung from the top wall portion 10 so as to be tightly fitted and communicate with the dispensing cylinder 18.
A fitting rod 30 extending in the vertical direction is continuously provided at the inner peripheral end of the inwardly facing flange-shaped bottom wall 26 of the support cylinder 20 via the fractured portion 28.
Then, as shown in FIGS. 3 and 8, the broken portion 28 is broken by the pushing-up operation of the fitting rod 30 from the outside, the fitting rod 30 is separated from the flange-shaped bottom wall 26, and the seal is formed. It is fitted into the cylinder 50 and is configured to close the cylinder hole of the seal cylinder 50.
According to this structure, since the cylinder hole of the seal cylinder 50 is closed by the fitting rod 30, it is possible to prevent the liquid from accumulating in the cylinder hole.

The second means has the first means, and the side hole portion 24, which is a liquid passage hole, is bored in the cylinder peripheral wall 22 of the support cylinder 20.
Inside the flange-shaped bottom wall 26, the bottom hole portion 29 is formed by separating the fitting rod 30 from the flange-shaped bottom wall 26 by pushing up the fitting rod 30. are doing.

In this means, as shown in FIGS. 1 and 6, a side hole portion 24, which is a liquid passage hole, is formed in the peripheral wall 22 of the support cylinder 20.
Further, as shown in FIGS. 3 and 8, the bottom of the flange-shaped bottom wall 26 is a mark that the fitting rod 30 is separated from the flange-shaped bottom wall 26 by the pushing-up operation of the fitting rod 30. The hole 29 is formed so as to be opened.
According to this structure, the bottom hole 29 serves as a drainage port, and it is possible to prevent liquid from accumulating in the support cylinder 20.

The third means has a first means or a second means, and the upper portion of the insertion rod 30 is formed at the reduced diameter end portion 30a.
The extension length H2 of the fitting rod 30 upward from the broken portion 28 is set so that the reduced diameter end portion 30a is inserted into the dispensing cylinder 18 in the closed state of the upper lid 40.

In this means, as shown in FIGS. 1 and 6, the upper portion of the fitting rod 30 is formed at the reduced diameter end portion 30a.
Then, the extension length H2 of the fitting rod 30 upward from the broken portion 28 is set so that the reduced diameter end portion 30a is inserted into the dispensing cylinder 18 in the closed state of the upper lid 40. There is.
According to this structure, the fitting rod 30 can be reliably fitted into the seal cylinder 50 by a push-up operation from the outside.

The fourth means has any one of the first to third means, and the locking protrusion 54 is attached to the lower inner surface of the seal cylinder 50, and the locking protrusion 54 is attached.
A concave receiving portion 34 that meshes with the locking protrusion 54 when the fitting rod 30 is fitted in the seal cylinder 50 is provided on the lower outer surface of the fitting rod 30.
The locking protrusion 54 and the concave receiving portion 34 form a locking means E for holding the fitting state of the fitting rod 30 in the seal cylinder 50.

In this means, as shown in FIGS. 2 (A) and 7 (A), a locking protrusion 54 is attached to the lower inner surface of the seal cylinder 50, and the fitting is inserted into the lower outer surface of the fitting rod 30. When the rod 30 is fitted in the seal cylinder 50 (see FIGS. 3 and 8), a concave receiving portion 34 that meshes with the locking protrusion 54 is provided.
The locking protrusion 54 and the concave receiving portion 34 form a locking means E for holding the fitting state of the fitting rod 30 in the seal cylinder 50.
According to this structure, it is possible to reliably prevent the fitting rod 30 from coming out of the seal cylinder 50.

According to the invention according to the first means, the seal cylinder 50 of the upper lid 40 is tightly fitted in the dispenser cylinder 18 standing up from the top wall portion 10 of the cap body 4, and is communicated with the dispenser cylinder 18. A bottomed support cylinder 20 is vertically hung from the top wall portion 10, and a fitting rod 30 extending in the vertical direction via a break portion 28 is provided at the inner peripheral end of the flange-shaped bottom wall 26 of the support cylinder 20. In the continuous installation, the broken portion 28 is broken by the pushing-up operation of the fitting rod 30 from the outside, and the fitting rod 30 is separated from the flange-shaped bottom wall 26 to close the cylinder hole of the seal cylinder 50. Therefore, it is possible to prevent the liquid from accumulating in the seal cylinder 50.
According to the invention according to the second means, a bottom hole 29 is opened inside the flange-shaped bottom wall 26 as a mark that the fitting rod 30 is separated from the flange-shaped bottom wall 26 by a push-up operation. Therefore, the bottom hole 29 serves as a drainage port to prevent liquid from accumulating in the support cylinder 20.
According to the invention according to the third means, the reduced diameter end portion 30a, which is the upper part of the insertion rod 30, is provided so as to be inserted into the dispensing cylinder 18 in the closed state of the upper lid 40. By the raising operation, the insertion rod 30 can be securely fitted into the seal cylinder 50.
According to the invention according to the fourth means, the locking protrusion 54 provided on the lower inner surface of the seal cylinder 50 and the concave receiving portion 34 provided on the lower outer surface of the fitting rod 30 are fitted into the seal cylinder 50. Since the fitted state of the insertion rod 30 is maintained, it is possible to reliably prevent the insertion rod 30 from coming off from the inside of the seal cylinder 50.

It is sectional drawing which looked at the pouring cap which concerns on 1st Embodiment of this invention from the side. It is a figure which shows the structure of the main part of the pouring cap shown in FIG. 1, FIG. Is. It is an operation explanatory view of the pouring cap shown in FIG. It is sectional drawing which looked at the structure of the unfolded state of the pouring cap shown in FIG. 1 from the side. The structure of FIG. 4 is viewed from above. FIG. 4A is an overall view of the structure, and FIG. 4B is an enlarged view of a portion marked with reference numeral X in FIG. 4B. , (C) is an enlarged view of a portion marked with reference numeral Y in the figure (A). It is sectional drawing which looked at the pouring cap which concerns on 2nd Embodiment of this invention from the side. It is a figure which shows the structure of the main part of the pouring cap shown in FIG. 6, FIG. Is. It is an operation explanatory view of the pouring cap shown in FIG.

1 to 5 show the injection cap 2 according to the first embodiment of the present invention.
As shown in FIG. 1, the pouring cap 2 is formed of a cap body 4 and an upper lid 40.
As shown in FIG. 4, the injection cap 2 can be molded in a state (expanded state) in which the upper lid 40 is inverted by 180 ° with respect to the cap main body 4.
The dispensing cap 2 is intended to be attached to the mouth and neck 102 of the container body 100 shown by the imaginary line in FIG. In the illustrated example, the outer rib 104 is attached to the outer surface of the mouth neck 102.
For convenience of explanation, first, the basic configuration of the injection cap of the present invention will be described.

The cap body 4 has a mounting cylinder portion 5 for mounting on the mouth neck 102, and a top wall portion 10 is continuously provided at the upper end portion of the mounting cylinder portion 5.

An inner rib 6 for locking to the lower surface of the outer rib 104 is attached to the lower inner surface of the mounting cylinder portion 5.
An upper lid 40 is connected to the upper part of the mounting cylinder portion 5 via a hinge 7. In this specification, for convenience of explanation, the right side of FIG. 1A is referred to as "rear", the left side is referred to as "front", and the direction orthogonal to the paper surface is referred to as "left and right".
Further, in the present embodiment, as shown in FIG. 1, a cut groove 8 is formed to be formed below the upper end surface of the mounting cylinder portion 5. The cut groove 8 can be formed over substantially the entire circumference of the mounting cylinder portion 5 so as to divide the upper portion of the mounting cylinder portion 5 into an inner peripheral portion and an outer peripheral portion.
Specifically, as shown in FIG. 5A, the cut groove 8 is a portion adjacent to a notch n formed in the upper outer surface of the mounting cylinder portion 5 in the vertical direction (a portion adjacent to the hinge 7). ) Is the starting point, passes near the hinge 7, extends to the opposite side of the notch n, and ends. An indestructible thick portion m is formed between the end portion of the cut groove 8 and the notch n.
As shown in FIG. 1, a thin-walled weakened portion 9 is formed between the inner end of the bottom surface of the cut groove 8 and the inner surface of the mounting cylinder portion 5.
Then, when the upper lid 40 is pulled outward from the side in the opened state, the weakened portion 9 is broken to the thick portion m, and when the upper lid 40 is pulled up, the container body and the pouring cap are provided so that they can be easily separated and disposed of. ing.
Further, in the present embodiment, as shown in FIG. 5A, a drain hole h penetrating from the bottom of the cut groove 8 to the inner surface side of the mounting cylinder portion is formed at an appropriate position in the circumferential direction of the mounting cylinder portion 5. ing.

As shown in FIG. 1, the top wall portion 10 is connected to the upper end portion of the mounting cylinder portion 5.
An annular engaging projection 11 is raised from the peripheral end of the top wall portion 10.
Further, an inner ring 12 is vertically hung from the lower surface of the top wall portion 10 with a certain distance from the mounting cylinder portion 5, and the mouth and neck portion is provided between the mounting cylinder portion and the inner ring. It is formed so as to sandwich the 102.
A liquid passage hole 14 is opened at an appropriate position of the top wall portion 10 (a position closer to the front away from the hinge 7 in the illustrated example) so as to be located inside the inner ring 12.
A pouring cylinder 18 stands up from the periphery of the liquid passing hole 14.

The upper lid 40 has a lid peripheral wall 44 hung from the peripheral end portion of the top plate 42, and the lower end portion of the lid peripheral wall 44 is connected to the rear wall portion of the mounting cylinder portion 5 via a hinge 7. There is.
An engaged recess 47 that meshes with the engaging protrusion 11 is provided around the lower end of the inner surface of the lid peripheral wall 44.
In a preferred illustrated example, as shown in FIG. 1, an eaves-shaped portion 48 covering a range from the upper side of the engaged recess 47 to the inside of the upper end portion of the engaging protrusion 11 is projected downward and inward. ..
Further, as shown in FIG. 5A, a plurality of (three in the illustrated example) vertical groove portions 49 are formed at appropriate positions on the lid peripheral wall 44. These vertical groove portions 49 are vertically provided by cutting out the eaves-shaped portion 48 from the upper end to the lower end side of the inner surface of the peripheral wall of the lid.
Further, as shown in FIG. 4, a concave groove portion c extending laterally from the vertical groove portion 49 is formed on the inner surface of the engaged concave portion 47.
Further, the knob 46 projects forward from the lower end of the front wall portion of the lid peripheral wall 44.
Further, a seal cylinder 50 is vertically hung from the top plate 42. The seal cylinder 50 is tightly fitted in the dispenser cylinder 18 in the closed state, and the dispenser cylinder 18 is always sealed.
An inner sealing means S is formed between the outer surface of the seal cylinder 50 and the corresponding portion of the cap body 4 (mainly the inner surface of the pouring cylinder 18). This will be described later.
Further, on the lower surface of the top plate 42, an annular thin-walled portion 56 for absorbing internal pressure is formed so as to surround the seal cylinder 50.

In the present invention, the support cylinder 20 is vertically installed from the periphery of the liquid passage hole 14 of the top wall portion 10 so as to communicate with the injection cylinder 18.
The support cylinder 20 has a role of supporting the insertion rod 30 described later and a role of adjusting the inflow amount of the liquid into the liquid passage hole 14.
As shown in FIG. 2A, the support cylinder 20 has a cylinder peripheral wall 22 connected to the top wall portion 10 and an inward flange-shaped bottom wall 26 attached to the lower end of the cylinder peripheral wall 22. ..
A side hole portion 24, which is a liquid passage hole, is opened in the cylinder peripheral wall 22.
In the illustrated example, as shown in FIG. 2B, a pair of front and rear side hole portions 24 are opened, but the number and orientation thereof can be appropriately changed. However, when a plurality of side hole portions 24 are provided, it is preferable to arrange them equiangically in the circumferential direction of the cylinder peripheral wall 22.
Further, in the illustrated example, the side hole portion 24 is formed as a vertically long hole, but the shape thereof can be changed as appropriate.
As shown in FIG. 2B, the flange-shaped bottom wall 26 is formed in a substantially annular shape, but this shape can be appropriately changed.
Inside the flange-shaped bottom wall 26, a fitting rod 30 is continuously provided.

The fitting rod 30 is connected to the inner peripheral edge portion of the flange-shaped bottom wall 26 via a broken portion 28, and is supported in a vertical state.
Then, as shown in FIG. 4, the fitting rod 30 is fitted into the seal cylinder 50 by an operation of pushing up from below with a jig (for example, a push-up rod) (not shown) so that the fitting rod 30 cannot be pulled out. Is formed in.
As a result, the cylinder hole of the seal cylinder 50 is closed, so that it is possible to prevent liquid from accumulating in the seal cylinder 50, for example, while the user is using the cap.
In the present embodiment, as shown in FIG. 2B, the fractured portions 28 are equiangularly arranged at a plurality of locations (4 locations in the illustrated example) on the inner circumference of the flange-shaped bottom wall 26 and can be fractured. It is formed as a support piece.
However, the structure can be appropriately changed, and a thin break line may be formed over the entire inner circumference of the flange-shaped bottom wall 26.

In the present embodiment, as shown in FIG. 1, the fitting rod 30 has an extension length of H1 downward and an extension length of H2 upward from the portion where the fractured portion 28 is formed, both above and below. Each extends to.
The upward extension length H2 may be designed so that the upper portion of the insertion rod 30 is inserted into the lower portion of the seal cylinder 50 in advance before the push-up operation is performed.
By doing so, the fitting rod 30 can be securely fitted in the seal cylinder 50 by the pushing-up operation.
In a suitable illustrated example, the lower portion of the fitting rod 30 is attached to the first rod portion 30b having a diameter large enough to be tightly fitted into the seal cylinder 50, and the upper portion of the fitting rod 30 is attached to the first rod portion 30b. It is formed in the second rod portion (or the reduced diameter end portion) 30a having a smaller diameter than the lower portion. The second rod portion 30a is preliminarily inserted into the seal cylinder 50 with play (play insertion).
Further, the upward extending length H1 is designed to be at least smaller than the height difference H3 between the upper end of the fitting rod 30 and the lower surface of the top plate 42 in the state shown in FIG.
By doing so, as shown in FIG. 3, when the fitting rod 30 is pushed up to the depth of the seal cylinder 50, the fitting rod 30 is completely separated from the inside of the flange-shaped bottom wall 26.
As a result, the bottom hole 29 is opened inside the flange-shaped bottom wall 26 as a mark that the fitting rod 30 is detached from the flange-shaped bottom wall 26, as shown in FIG.
Since the liquid in the support cylinder 20 is discharged to the container body 100 after using the container with the pouring cap by using the bottom hole portion 29 as the drain port, it is possible to prevent the liquid from accumulating in the support cylinder 20.
The bottom hole 29 also has a function as a discharge port.

In the present embodiment, as shown in FIG. 5C, a locking protrusion 54 is attached to the lower inner surface of the seal cylinder 50.
Further, as shown in FIGS. 1 and 2B, a concave receiving portion 34 is provided on the lower outer surface of the fitting rod 30. The concave receiving portion 34 is formed so as to engage with the locking protrusion 54 when the fitting rod 30 is fitted in the seal cylinder 50 (see FIG. 3).
The locking protrusion 54 and the concave receiving portion 34 form a locking means E for holding the fitting state of the fitting rod 30 in the seal cylinder 50.
By doing so, it is possible to more reliably maintain the fitted state of the fitting rod 30 in the seal cylinder 50.
In the present embodiment, one concave receiving portion 34 having an undercut shape (or a downward stepped shape) is provided around the lower end portion of the outer peripheral surface of the fitting rod 30, and the lower end of the inner peripheral surface of the seal cylinder 50 is provided. A plurality of (four in the illustrated example) locking protrusions 54 arranged at equal intervals in the circumferential direction are projected inward from the portion.
It is preferable that the concave receiving portion 34 has a downward stepped shape, and the corner portion of the portion that meshes with the locking protrusion 54 has an edge shape. By doing so, the locking protrusion 54 can bite into the corner portion of the concave receiving portion 34 and can be fitted more firmly.
The protruding length of the locking protrusion 54 is such that when the fitting rod 30 is inserted into the seal cylinder 50, the large diameter portion (second rod portion 30a) of the fitting rod 30 is locked. Set so that you can get over 54.
Further, in the illustrated example, the broken portion 28 of the flange-shaped wall portion 26 is continuously provided at a position higher than the concave receiving portion 34 of the fitting rod 30.
The arrangement, number, structure, etc. of the concave receiving portion 34 and the locking protrusion 54 can be appropriately changed.

In the illustrated example, the lower end portion 32 of the fitting rod 30 is formed in a downward conical shape. Then, as shown in FIG. 3, with the fitting rod 30 abutting against the top plate 42, the lower end portion 32 of the fitting rod 30 is formed so as to protrude downward from the lower end surface of the seal cylinder 50. There is.

Further, in the embodiment, the inner sealing means S between the outer surface of the seal cylinder 50 and the facing portion of the cap body 4 is formed by the main sealing portion s1 and the auxiliary sealing portion s2 as shown in FIG.
Specifically, first, as shown in FIG. 2A, the seal cylinder 50 extends downward from the large outer diameter portion 50a to the small outer diameter portion 50b whose diameter is reduced via the annular downward step portion 53. ing.
Further, in the cap body 4, the pouring cylinder 18 has a diameter larger than that of the liquid passing hole 14, and an annular upward step portion 16 is formed between the pouring cylinder 18 and the liquid passing hole 14.
The upward step portion 16 and the downward step portion 53 are arranged so as to face each other with a certain interval.
The main seal portion s1 includes a large diameter seal surface portion 51 which is an outer surface of the large outer diameter portion 50a of the seal cylinder 50 and a large diameter receiving surface 19 which is an inner surface of the ejection cylinder 18.
Further, the auxiliary seal portion s2 includes a small diameter seal surface portion 52 which is an outer surface of the small outer diameter portion 50b of the seal cylinder 50, and a small diameter receiving surface 15 which is an edge portion of the liquid passage hole 14.
In a preferred illustrated example, the small diameter seal surface portion 52 is formed on a tapered surface having a small diameter at the lower end.
According to this structure, for example, even if the container body to which the pouring cap 2 is attached is dropped on the floor and the pouring cap 2 collides with the floor surface, the main seal portion s1 and the auxiliary seal portion s2 are configured in two stages. Therefore, the sealing property can be ensured.
In a sealing means composed of a single sealing surface portion and a receiving surface, the sealing surface moves (shifts) with respect to the receiving surface when an impact is applied, so that a gap may temporarily occur between the two. On the other hand, in the configuration of this embodiment, even if the large-diameter seal surface portion 51 moves with respect to the large-diameter receiving surface 19, the upward step portion 16 bites into the small-diameter seal surface portion 52 and has a small diameter. The sealing surface portion 52 is in close contact with the small diameter receiving surface 15. Therefore, the sealing property is not impaired.

In the above configuration, when the injection cap 2 of the present invention is used, the mounting cylinder portion 5 and the upper lid 40 of the cap body 4 are moved in the state shown in FIG. 1 before being mounted on the mouth neck 102 of the container body 100. It may be fixed by an appropriate method so as not to be present, and the lower end portion 32 of the fitting rod 30 may be pushed up using a jig (not shown).
Then, as shown in FIG. 3, the fitting rod 30 is fitted into the seal cylinder 50, and the cylinder hole of the seal cylinder 50 is closed.
This makes it possible to prevent the liquid from entering and accumulating in the seal cylinder 50 during use.
Further, the bottom hole portion 29 opens inside the flange-shaped bottom wall 26 as a mark that the fitting rod 30 is separated from the flange-shaped bottom wall 26 of the support cylinder 20.
In this state, the pouring cap 2 is attached to the mouth neck 102 of the container body 100, the upper lid 40 is opened, and the container body 100 is tilted. It is discharged from the dispensing cylinder 18 to the outside through the portion 29 and the liquid passing hole 14.
At this time, by passing the liquid through the side hole portion 24 of the support cylinder 20, the flow rate of the liquid discharged from the dispensing cylinder 18 is restricted, and it is possible to prevent the liquid from being excessively discharged.
After discharging the required liquid, the container body 100 is returned to the upright state. At this time, the liquid in the support cylinder 20 returns from the bottom hole portion 29 to the container body 100 side. Therefore, it is possible to prevent the liquid from remaining in the support cylinder 20 as in the case of the structure in which the bottom hole portion 29 is not provided.
As a result, it is possible to prevent the inside of the cap from being contaminated by the residual liquid (liquid contamination).

Hereinafter, other embodiments of the present invention will be described. In these explanations, the same structure as that of the first embodiment will be omitted.

6 to 8 show the pouring cap of the second embodiment of the present invention. This embodiment is a modification of the configuration of the concave receiving portion 34 in the configuration of the first embodiment.
That is, in the present embodiment, instead of the undercut shape of the first embodiment, it is formed as a recess arranged at a certain distance from the lower end portion 32 at the lower portion of the outer peripheral surface of the fitting rod 30.
The concave receiving portion 34 of the illustrated example is formed as an annular groove provided around the outer peripheral surface of the fitting rod 30, but the shape thereof can be appropriately changed.

2 ... Dispensing cap 4 ... Cap body 5 ... Mounting cylinder 6 ... Inner rib 7 ... Hinge 8 ... Cutting groove 9 ... Weakened part 10 ... Top wall part 11 ... Engagement protrusion 12 ... Inner ring 14 ... Liquid passage hole
15 ... Small diameter receiving surface 16 ... Upward step 17 ... Inclined wall 18 ... Dispensing cylinder 19 ... Large diameter receiving surface 20 ... Support cylinder 22 ... Cylinder peripheral wall 24 ... Side hole 26 ... Flange-shaped bottom wall 28 ... Broken part 29 ... Bottom hole 30 ... Insertion rod 30b ... First rod 30a ... Second rod (reduced diameter end)
32 ... Lower end (conical end) 34 ... Concave receiving part
40 ... Top lid 42 ... Top plate 44 ... Lid peripheral wall 46 ... Picking 47 ... Engagement recess 48 ... Eaves-shaped part 49 ... Vertical groove part 50 ... Seal cylinder 50a ... Large outer diameter part 50b ... Small outer diameter part 51 ... Large diameter seal Face part 52 ... Small diameter seal surface part 53 ... Downward step part 54 ... Locking protrusion 56 ... Circular thin wall part 100 ... Container body 102 ... Mouth neck 104 ... Outer rib c ... Recessed groove part E ... Locking means h ... Drain hole m ... thick part n ... notch
S ... Inner sealing means s1 ... Main sealing part s2 ... Auxiliary sealing part T ... Outer sealing means

Claims (4)

It has a top wall portion (10) connected to the upper part of the mounting cylinder portion (5) to be attached to the mouth and neck of the container body, and the pouring cylinder (18) is erected from this top wall portion (10). Cap body (4) and
The lid peripheral wall (44) suspended from the peripheral end of the top plate (42) is connected to the mounting cylinder portion (5) via a hinge (7), and the injection cylinder is connected from the top plate (42). (18) is provided with an upper lid (40) on which a seal cylinder (50) tightly fitted therein is vertically installed.
A support cylinder (20) having an inward flange-shaped bottom wall (26) attached to the lower end of the cylinder peripheral wall (22) from the top wall portion (10) in communication with the dispensing cylinder (18). It is erected and
A fitting rod (30) extending in the vertical direction is continuously provided at the inner peripheral end of the flange-shaped bottom wall (26) via a fractured portion (28).
The broken portion (28) is broken by the pushing-up operation of the fitting rod (30) from the outside, and the fitting rod (30) is separated from the flange-shaped bottom wall (26) to separate the sealing cylinder (50). A pouring cap characterized in that it is fitted inward and configured to close the cylinder hole of the seal cylinder (50). A side hole portion (24), which is a liquid passage hole, is formed in the peripheral wall (22) of the support cylinder (20).
Inside the flange-shaped bottom wall (26), the fitting rod (30) is separated from the flange-shaped bottom wall (26) by a push-up operation of the fitting rod (30), so that a bottom hole portion is provided. The pouring cap according to claim 1, wherein (29) is formed so as to be opened. The upper portion of the insertion rod (30) is formed at the reduced diameter end portion (30a).
An extension of the insertion rod (30) upward from the broken portion (28) so that the reduced end portion (30a) is inserted into the dispensing cylinder (18) in the closed state of the upper lid (40). The pouring cap according to claim 1 or 2, wherein the payout length (H2) is set. A locking protrusion (54) is attached to the inner surface of the lower portion of the seal cylinder (50), and the seal cylinder (50) is provided with a locking protrusion (54).
On the lower outer surface of the fitting rod (30), a concave receiving portion (34) that meshes with the locking protrusion (54) when the fitting rod (30) is fitted in the seal cylinder (50) is provided. Provide,
The locking protrusion (54) and the concave receiving portion (34) form a locking means (E) for holding the fitted state of the fitting rod (30) in the seal cylinder (50). The pouring cap according to any one of claims 1 to 3.

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