Discharge plug with cap

Abstract

To provide a discharge plug with a cap that can appropriately switch between large amount discharge and small amount discharge.SOLUTION: A discharge plug with a cap comprises: a plug body 2 having a large-diameter discharge port 6 opened at a tip f side of a cylindrical plug part 4 and an outward flange 8 provided on a base end e side of the cylindrical plug part 4; a plug part 20 disposed inside the cylindrical plug part 4; and a cap 30 rotatably fitted to the cylindrical plug part 4 and having a small-diameter discharge port 40 opened in a top wall 34. A pair of separable retaining means A and B are formed on a cylindrical peripheral wall 42 of the cap 30 and the cylindrical plug part 4, which allow rotation of the cap 30 and restrict the cap 30 from coming off. A slider 44 is disposed on a lower end side of the cylindrical peripheral wall 42, and a pressing part 12 is disposed on an upper surface side of the outward flange 8. When the cap 30 is rotated, the slider 44 passes over the pressing part 12, thereby separating the pair of retaining means A and B.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a capped discharge plug. [Background technology]

[0002] One known product comprises a plug body with an outward flange attached to the base end of the cylindrical plug part for attachment to an external pack body, a plug part disposed inside the cylindrical plug part, and a cylindrical cap with a top that is fitted to the outer peripheral surface of the cylindrical plug part and has a discharge port opening in the top wall (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2014-84141 Summary of the Invention [Problem to be solved by the invention]

[0004] The device of Patent Document 1 has only a single discharge port, and it is not possible to appropriately switch between discharging a large amount of content and discharging a small amount of content.

[0005] A first object of the present invention is to provide a capped discharge plug that can be used to accurately switch between large-volume and small-volume discharge, and a second object is to make it easy to switch between discharge modes. [Means for solving the problem]

[0006] The first means comprises a plug body 2 having a large diameter discharge port 6 opened on the tip end f side of a plug barrel 4 and an outward flange 8 attached to the base end e side of the plug barrel 4; a plug portion 20 disposed inside the plug barrel portion 4; a cap (30) in the form of a cylindrical cap with a top that is rotatably fitted to the stopper cylinder portion (4) and has a small-diameter discharge port (40) opening in a top wall (34); A pair of separable retaining means A and B are formed on the cylindrical peripheral wall 42 of the cap 30 and the cylindrical stopper portion 4, which allow the cap 30 to rotate and restrict the cap 30 from slipping out upward, A slider 44 is provided on the lower end side of the cylindrical peripheral wall 42, and a pressing portion 12 is provided on the upper surface of the outward flange 8 for pushing up the slider 44 as the cap 30 is rotated. The pair of retaining means A and B are formed so that they can be separated when the slider 44 moves in the circumferential direction P of the plug cylindrical portion 4 over the pressing portion 12.

[0007] In this means, as shown in FIG. 1(B), a large-diameter discharge port 6 is provided on the tip f side of the cylindrical plug portion 4 of the plug body 2, and a small-diameter discharge port 40 is provided on the top wall 34 of the cap 30 which is rotatably fitted onto the cylindrical plug portion 4. This structure makes it possible to accurately select between a mode in which a large amount is discharged from the large diameter discharge port 6 with the cap 30 removed and a mode in which a small amount is discharged from the small diameter discharge port 40 with the cap 30 attached. A slider 44 is provided on the lower end side of the cylindrical peripheral wall 42 of the cap 30, and a pressing portion 12 is provided on the outward flange 8 of the plug body 2, and the pair of retaining means A and B that prevent the cap 30 from being removed are separated when the slider 44 passes over the pressing portion 12 by rotating the cap 30. This structure makes it easy to remove the cap and to select between two types of ejection modes.

[0008] the second means includes the first means, and the pressing portion 12 is a pressing protrusion attached to a part of the outward flange 8 in the circumferential direction P, The pair of retaining means A and B includes an annular engaging rib A provided around the outer surface of the plug barrel portion 4, and an annular receiving portion B formed on the inner surface of the barrel peripheral wall 42 to receive the engaging rib A.

[0009] In this means, the pressing portion 12 is provided on a part of the outward flange 8 in the circumferential direction P, as shown in FIG. 2(A). In addition, as a means for preventing the cap 30 from coming off, there are provided an annular engaging groove A (see Figure 2(B)) around the outer surface of the plug barrel portion 4, and an annular receiving portion B (see Figure 3(A)) formed on the inner surface of the barrel peripheral wall 42. According to this structure, as shown in Figure 5 (B), when the cap 30 is fitted onto the plug body 2, the engaging thread A can be received and engaged by the receiving portion B simply by lowering the cap 30 straight down, regardless of the orientation (rotational position) of the cap 30, and then, by rotating the cap 30 from this engaged state, the slider 44 can be caused to ride up onto the pressing portion 12. Therefore, since there is no need to align the cap, it is easy to switch the discharge mode.

[0010] The third means includes the first means or the second means, and the pressing portion 12 has inclined guide portions 14 on both sides in the circumferential direction P when viewed from the radial direction Q of the plug barrel portion 4 for guiding the slider 44 upward.

[0011] In this means, as shown in FIG. 2(B), the pressing portion 12 has inclined guide portions 14 on both sides in the circumferential direction P when viewed from the radial direction Q of the plug barrel portion 4 to guide the slider 44 upward. According to this structure, when the cap 30 is rotated in either direction in the circumferential direction P, the slider 44 rides up onto one of the inclined guide portions 14, thereby pushing up the cap 30. This allows for flexibility in operation, improving usability when switching between dispensing modes.

[0012] the fourth means includes the first means or the second means, and the upper surface of the pressing portion 12 as viewed from the circumferential direction P is a contact surface portion 16 that comes into contact with the slider 44 that passes over the pressing portion 12; The contact surface portion 16 is formed so as to be inclined downward toward the inside in the radial direction Q of the plug barrel portion 4.

[0013] In this means, the upper surface of the pressing portion 12 as viewed from the circumferential direction P is a contact surface portion 16 that contacts the slider 44 that passes over the pressing portion 12, and this contact surface portion 16 is formed so as to slope downward toward the inside of the plug barrel portion 4 in the radial direction Q, as shown in Figure 4(F). According to this structure, when the cap 30 is rotated and the slider 44 rubs against the contact surface portion 16, stress s acts inward in the radial direction Q, thereby preventing the cylindrical peripheral wall 42 from deforming outward in the radial direction Q.

[0014] The fifth means includes the first means, and a plurality of notches 48 extending from the lower end to the upper end are provided vertically and spaced apart from one another on the inner surface of the cylindrical peripheral wall 42 .

[0015] In this means, as shown in FIG. 3(B), a plurality of notches 48 extending from the lower end to the upper end of the cylindrical peripheral wall 42 are provided vertically at a distance from one another on the inner surface thereof. In this configuration, even if the engagement strength with the plug body 2 is increased, the cap 30 can be easily rotated, and the discharge mode can be easily switched.

[0016] The sixth means includes the first or fifth means, and a sealing tube 36 is suspended from the top wall 34 so as to be in close contact with the inner circumferential surface of the plug tube portion 4, By forming an annular recess 5 facing outward in the radial direction Q on the tip f side of the plug barrel 4, a gap g is formed between the outer surface of the plug barrel 4 and the inner surface of the cylindrical peripheral wall 42 at the location where this annular recess 5 is formed.

[0017] In this means, as shown in FIG. 1(B), a sealing tube 36 is suspended from the top wall 34 in close contact with the inner peripheral surface of the cylindrical plug portion 4, and an annular recess 5 is formed on the tip f side of the cylindrical plug portion 4, facing outward in the radial direction Q. As a result, a gap g is formed between the outer peripheral surface of the cylindrical plug portion 4 and the inner peripheral surface of the cylindrical peripheral wall 42 at the location where this annular recess 5 is formed, as shown in FIG. This structure reduces the sliding resistance between the plug barrel portion 4 and the barrel peripheral wall 42 while ensuring a tight seal with the seal barrel 36. This makes it easier to rotate the cap 30, facilitating switching of the dispensing mode and facilitating the stopper application operation. [Effects of the Invention]

[0018] According to the present invention, the capped discharge plug can be used to accurately discharge a large amount of content or a small amount of content, and can easily be switched between these two types of discharge modes. [Brief explanation of the drawings]

[0019] [Figure 1] 1A and 1B show the configuration of a capped discharge plug according to an embodiment of the present invention in a closed state, with FIG. 1A being a plan view and FIG. 1B being a cross-sectional view seen from the side. [Figure 2] 2 shows the configuration of one main component (plug body) of the discharge plug of FIG. 1, with FIG. 2(A) being a plan view and FIG. 2(B) being a partially cutaway cross-sectional view seen from the side. [Figure 3] This figure shows the configuration of the other main component (cap) of the discharge plug in Figure 1 in an open state, with (A) being a cross-sectional view from the side, (B) being an enlarged view of a portion thereof, (C) being a plan view, and (D) being a bottom view. [Figure 4] 10A and 10B are explanatory diagrams of the configuration of the discharge plug during the operation of removing the cap from the plug body, in which (A) shows the configuration when the slider is in contact with the pressing portion, (B) shows the configuration near the annular recess in the contact state, (C) is a radial view of the configuration of the contact point between the slider and pressing portion in the contact state, (D) is a circumferential view of the contact point in (C), (E) is a radial view of the contact point when the slider has climbed onto the top of the pressing portion, and (F) is a circumferential view of the contact point in (E). [Figure 5]This is an explanatory diagram of the configuration of the discharge plug when reattaching the cap or discharging the contents, where (A) shows the stage when the contents are discharged from the large diameter discharge port after the plug part has been removed, (B) shows the stage when the cap is reattached to the plug body after the operation, and (C) shows the stage when the contents are discharged from the small diameter discharge port after the cap has been attached. BEST MODE FOR CARRYING OUT THE INVENTION

[0020] 1 to 5 show a capped discharge plug according to an embodiment of the present invention. This discharge plug with cap is to be attached to a pack 100 shown in phantom lines in Figure 1(B). This pack is a box made of paper or the like, with a mounting hole 102 for mounting the discharge plug opened at an appropriate position (at the top in the illustrated example). The capped discharge plug is composed of a plug body 2, a plug portion 20, and a cap 30. Each of these components can be made of, for example, synthetic resin. In the illustrated example, the plug body 2 and the plug portion 20 are formed integrally with each other, but their structure can be modified as appropriate.

[0021] In the illustrated example, the plug body 2 has a straight cylindrical plug portion 4, and a large-diameter discharge port 6 opens at the tip f of this plug portion 4. This large-diameter discharge port 6 is closed by a cap 30 in the initial state shown in Figure 1(A), and is opened by removing the cap 30, allowing it to be used for large-volume discharge. By using the large diameter outlet 6 and the small diameter outlet 40 (described later) appropriately, two types of discharge modes (large volume discharge and small volume discharge) can be accurately selected. Here, "accurately" means in a way that allows the two modes to be objectively distinguished. An outward flange 8 is attached to the base end e of the plug barrel 4 for mounting on an external pack body 100 . Further, a pressing portion 12 is attached to the upper surface of the outward flange 8 to slide up a slider 44, which will be described later.

[0022] In this embodiment, the plug barrel portion 4 is formed in a vertically oriented cylindrical shape. As shown in FIG. 2(B), an annular engaging rib A is provided around the outer periphery of the cylindrical plug portion 4 at a suitable position (at the bottom in the illustrated example). The engaging thread A is a portion for engaging with an annular receiving portion B formed on the cylindrical peripheral wall 42, which will be described later. Although the engaging thread A in the illustrated example is formed on an annular protrusion, its structure can be modified as appropriate. The engaging thread A and the receiving portion B are a pair of retaining means that prevent the cap 30 from slipping out upward. These retaining means allow the cap 30 to rotate, and are formed so as to be separable from each other when the pressing portion 12, which will be described later, pushes up the cap 30. The term "pair" means that two pieces form a set, and the retaining means may have any structure as long as the set functions to prevent the cap from being rotatably removed. In this embodiment, an annular recess 5 is formed on the outer circumferential surface of the cylindrical plug portion 4 at a position on the front end f side of the cylindrical plug portion 4 and facing outward in the radial direction Q. This annular recess 5 is a recess (friction-reducing recess) for reducing friction with the cylindrical circumferential wall 42, which will be described later. That is, at the location where the annular recess 5 is formed, as shown in Fig. 4(B), a gap g is formed between the outer peripheral surface of the cylindrical plug portion 4 and the inner peripheral surface of the cylindrical circumferential wall 42, reducing the contact area between the cylindrical plug portion 4 and the cylindrical circumferential wall 42, thereby reducing the sliding resistance between them. Therefore, the cap 30 can be easily rotated. Furthermore, the annular recess 5 has the effect of preventing the contents from dripping by improving drainage. 2(B), the annular recess 5 in the illustrated example is formed in a shallow groove shape (meaning a shape in which the groove width is greater than the groove depth) in a cross section viewed from the circumferential direction P. However, the shape can be changed as appropriate. In this embodiment, the tip f of the stopper tube portion 4 is positioned above the annular recess portion 5, thereby ensuring airtightness between the outer surface of the sealing tube 36 described below and the inner surface of the stopper tube portion 4, while providing a discharge stopper that is easy to plug and rotate the cap. An inner rib 17 is provided around the base end e of the cylindrical plug portion 4 via a breaking line 18 to hold a plug portion 20, which will be described later. In the illustrated example, an annular protrusion c extends downward from the vicinity of the base end e of the plug barrel portion 4.

[0023] The outward flange 8 is a portion for assembly into the mounting hole 102 of the pack body 100 . The outward flange 8 in the illustrated example has an inner peripheral portion 9 which is a high-step plate portion, and an outer peripheral portion 11 which is a low-step plate portion protruding from the inner peripheral portion 9 via a stepped cylindrical portion 10. The stepped cylindrical portion 10 is formed to have approximately the same diameter as the mounting hole 102 . As shown in FIG. 4(A), the stepped cylindrical portion 10 is inserted into the mounting hole 102, and the outer peripheral portion 11 is connected to the inner surface of the pack body 100. The stepped cylindrical portion 10 has an outer surface provided with a horizontal locking rib L for locking onto the surface of the pack body 100.

[0024] The pressing portion 12 is a portion for pushing up a slider 44 (described later) in association with the rotational operation of the cap 30 . In this embodiment, the pressing portion 12 is an upward protrusion (pressing protrusion) provided on a part of the outward flange 8 in the circumferential direction. In this arrangement, when the cap 30 is attached to the plug body 2, the pressing portion 12 and the slider 44 described below will not interfere with (clash with) each other unless they happen to be positioned so as to overlap vertically. Therefore, no positioning work for the cap 30 is required. In the illustrated example, the pressing portion 12 is attached to the inner peripheral portion 9 of the outward flange 8 . In this embodiment, the pressing portion 12 is shaped like an isosceles triangle when viewed from the radial direction Q of the plug barrel portion 4, as shown in Figure 2(B), and is formed so that two sides (hypothetic sides) of the triangle are slidable by the slider 44 described below. However, the shape can be changed as appropriate, and it can also be a mountain shape other than a triangle. The height U of the pressing portion 12 is set to a size that allows the engaging thread A and the receiving portion B to be separated when a slider 44 (described later) climbs over the pressing portion 12 . The pressing portion 12 in the illustrated example is composed of a pair of inclined guide portions 14 that are symmetrical with respect to the imaginary vertical line V shown in Figure 2(B), and is configured so that the same pushing-up action is obtained regardless of whether the cap 30 is rotated forward or backward. The inclined guide portion 14 is a triangular portion with the oblique side as its long side when viewed from the radial direction Q, and serves to guide a slider 44 (described later) upward. However, the arrangement and shape of the pressing portion 12 can be changed as appropriate. In this embodiment, as shown in FIG. 2(A), a plurality of (two in the illustrated example) pressing portions 12 of the same size and shape are arranged equiangularly spaced apart in the circumferential direction of the plug barrel portion 4. This arrangement allows the cap 30 to be pushed up properly relative to the plug body 2 without tilting. Each pressing portion 12 is connected to the outer peripheral surface of the plug cylindrical portion 4 and protrudes in the radial direction Q from this connecting point. The protruding length w, as shown in FIG. 4(D), should be set to be at least equal to or greater than the thickness of the cylindrical peripheral wall 42 described later on the upper surface (contact surface portion 16 described later) side of the pressing portion 12. The upper surface of the pressing portion 12 as viewed from the circumferential direction P comes into contact with a slider 44 (described later) that rides over the pressing portion 12. This upper surface is referred to as a contact surface portion 16. The contact surface portion 16 in the illustrated example is a tapered surface portion that slopes downward toward the inside in the radial direction Q of the plug barrel portion 4, and has a gradient t with respect to the horizontal plane. With this configuration, when a slider 44 (described later) rubs against the contact surface 16, a stress s acts inward in the radial direction Q. Therefore, the cylindrical circumferential wall 42 can be prevented from deforming outward in the radial direction Q.

[0025] As shown in Fig. 1(B), the plug portion 20 is removably disposed inside the cylindrical plug portion 4. The plug portion 20 in the illustrated example is a portion (unplug portion) connected to the inside of the cylindrical plug portion 4, but its structure can be modified as appropriate. In this embodiment, the plug portion 20 comprises a horizontal plate-like partition wall 22 that is continuous with the inner rib 17 of the cylindrical plug portion 4 via a break line 18, and a pull ring 24 that stands upright from the partition wall 22. However, this configuration can be modified.

[0026] The cap 30 is rotatably attached to the plug body 2 . When the cap 30 is set on the plug body 2, it is preferable to do so by tapping. The cap 30 in the illustrated example comprises a cap body 32 in the shape of a cylinder with a top, and an upper lid 50 connected to the cap body 32 via a hinge part h. A small-diameter discharge port 40, which is smaller in diameter than the large-diameter discharge port 6, is opened in the top wall 34 of the cap body 32. This small-diameter discharge port 40 is closed by an upper lid 50 in the initial state shown in Fig. 1(A), and is opened by opening the upper lid 50, so that it can be used for dispensing small amounts. The cap body 32 and the top cover 50 may be formed separately, or the top cover 50 may be omitted.

[0027] In the illustrated example, the cap body 32 has a cylindrical peripheral wall 42 extending from the peripheral edge of the top wall 34 and a sealing cylinder 36 extending from the rear surface of the top wall 34, as shown in FIG. 3(A). The cylindrical peripheral wall 42 is rotatably fitted to the outer peripheral surface of the cylindrical plug portion 4, and the sealing cylinder 36 is rotatably and liquid-tightly fitted to the inner peripheral surface of the cylindrical plug portion 4. Between the cylindrical peripheral wall 42 and the sealing cylinder 36, a pressure contact rib k for pressure contact with the upper end surface of the plug cylinder part 4 is provided around the back surface of the top wall 34, as shown in FIG. 4(B). A discharge tube 38 is erected from the top wall 34 inside the sealing tube 36, and the small-diameter discharge port 40 is opened at the upper end of this discharge tube 38. Additionally, the top wall 34 has an engaging piece m formed around the periphery of its upper surface for engaging with an engaged portion n on the lid peripheral wall 62 side, which will be described later.

[0028] In this embodiment, an annular receiving portion B for receiving (holding) the engaging thread A is provided around the periphery of the cylindrical peripheral wall 42 at a suitable position (the lower portion in the illustrated example). The receiving portion B in the illustrated example is formed by an annular groove b1 for inserting (loosely fitting in the illustrated example) the aforementioned engaging thread A, and an undercut-shaped claw portion b2 formed on the lower end side of this annular groove b1. When the cap 30 is fitted onto the plug barrel 4, the claws b2 move over the engaging ribs A, so that the engaging ribs A are fitted into the annular groove b1. However, these structures can be modified as appropriate. In this embodiment, the annular engaging rib A and receiving portion B are used as the retaining means, so when the cap 30 is attached to the plug body 2, the engaging rib A can be held in the receiving portion B simply by lowering the cap 30 straight down, regardless of the orientation (rotational position) of the cap 30. Therefore, there is no need to align the cap. In this embodiment, a plurality of notches 48 are formed on the inner peripheral surface of the cylindrical peripheral wall 42, vertically cutting through the receiving portion B and spaced apart equiangularly from one another. These notches 48 are formed in the shape of recessed grooves extending from the lower end j to the upper end i of the cylindrical peripheral wall 42 . According to this configuration, the cap 30 can be easily rotated relative to the plug body 2 even if the engagement strength (fitting strength) with the plug body 2 is increased. However, this structure can be modified as appropriate. For example, the notch may be omitted. Also, the notch may be provided only within the range of receiving portion B (for example, near the point where it intersects with receiving portion B).

[0029] An appropriate number of sliders 44 (the same number as the pressing portions 12 in the illustrated example) are attached to the lower end of the cylindrical peripheral wall 42. When the sliders 44 move past the pressing portions 12 by rotating the cap 30, the cap 30 is forced upward, and the pair of retaining means A and B are separated. In this embodiment, the sliders 44 are shaped like an isosceles triangle when viewed from the radial direction Q, and have a pair of edge portions 46 for sliding contact with the pressing portion 12. However, the shape can be changed as appropriate, and it can also be a mountain shape other than a triangle. The side shape of the slider 44 in the illustrated example is the same shape (triangle) as the side shape of the pressing portion 12, and is symmetrical from top to bottom, as shown by the dotted line in FIG. 1(B). According to this configuration, even if the pressing portion 12 and the slider 44 are positioned so as to almost overlap vertically when the cap 30 is being inserted, the slider 44 slides down along the sloped portion (inclined guide portion 14) of the pressing portion 12, and therefore does not interfere with the insertion of the cap. However, the shape of the slider 44 can be changed as appropriate. 3B, when viewed from the radial direction Q, the slider 44 has the same thickness as the cylindrical peripheral wall 42 and extends continuously from the cylindrical peripheral wall 42.

[0030] The upper lid 50 is formed by extending a lid peripheral wall 62 from the peripheral end of a lid plate 52, and the lid peripheral wall 62 is connected to the cylindrical peripheral wall 42 via a hinge portion h. As described above, the cap 30 is rotatable relative to the plug body 2, so the position of the hinge portion h can be set arbitrarily. As shown in Figure 1(B), the cover plate 52 in the illustrated example has a high-step plate portion 54 near the hinge portion h, and a low-step plate portion 56 on the opposite side of the hinge portion h that is connected to the high-step plate portion 54 via a step plate portion 55, and a knob portion d is attached to this low-step plate portion 56. A plug rod portion 60 for closing the small diameter discharge hole 40 is provided vertically from the rear surface of the high step plate portion 54 . In the illustrated example, a hanging tube 58 is suspended from the rear surface of the high-stage plate portion 54 to surround the discharge tube 38 .

[0031] In the above configuration, when the cap 30 is rotated relative to the plug body 2 from the state shown in Figure 1(B), the slider 44 of the cap 30 overcomes the pressing portion 12 of the plug body 2, causing the cap 30 to rise, and the engaging thread A and receiving portion B, which are the anti-pullout means, can be separated. This allows the cap 30 to be pulled up and removed from the plug body 2. In this process, since a plurality of notches 48 are formed on the inner surface of the cylindrical peripheral wall 42 and an annular recess 5 facing outward in the radial direction Q is formed on the tip f side of the cylindrical stopper portion 4, frictional resistance between the cylindrical stopper portion 4 and the cylindrical peripheral wall 42 is reduced, allowing the cap 30 to be easily rotated. Therefore, the discharge mode, which will be described later, can be easily switched. As shown in FIG. 4(D), the contact surface portion 16, which is the upper surface of the pressing portion 12, is inclined downward toward the inside in the radial direction Q, so that the cylindrical peripheral wall 42 can be prevented from deforming toward the outside in the radial direction Q. When using for the first time, with the cap 30 removed, the pull ring 24 is pulled up, removing the plug portion 20 and opening the orifice O. Next, when it is desired to discharge a large amount of the contents (including continuous discharge), the pack body 100 is tilted with the cap 30 removed, and the contents are discharged from the large diameter discharge port 6, as shown in FIG. 5(A). Furthermore, when discharging only a small amount of the contents, the cap 30 is attached to the plug body 2 as shown in Figure 5(B), the top lid 50 is opened, and the contents are discharged from the small diameter discharge port 40 as shown in Figure 5(C). Here, the pressing portion 12 is attached to a portion of the circumference of the outward flange 8 (see FIG. 2(A)), and the means for preventing the cap 30 from coming off is the annular engaging rib A and receiving portion B (see FIGS. 2(B) and 3(A)), so there is no need to position the cap 30 when attaching it. This makes it easy to switch the dispensing mode. When dispensing a small amount on the second or subsequent use, the rotation of the cap can be omitted, and the upper lid 50 can be rotated to dispense from the small diameter discharge port 40.

[0032] According to the above-mentioned configuration and operation, the large-diameter discharge port 6 for large-volume discharge is opened in the plug barrel portion 4 of the plug body 2, and the small-diameter discharge port 40 for small-volume discharge is opened in the cap 30 fitted onto the plug barrel portion 4, so that the mode of small-volume discharge or the mode of large-volume discharge can be accurately selected by attaching or detaching the cap 30. As the cap 30 is rotated, the slider 44 attached to the lower end of the cylindrical peripheral wall 42 moves past the pressing portion 12 provided on the outward flange 8 of the plug body 2, and the retaining means A and B of the cap 30 separate, making it easy to remove the cap. The pressing portion 12 is attached to a portion of the circumference of the outward flange 8, and the retaining means A, B are annular engaging thread A and receiving portion B, so positioning of the cap 30 is not required and switching of the discharge mode is easy. The pressing portion 12 has a pair of inclined guide portions 14 on both sides in the circumferential direction P, so that the pressing portion 12 comes into contact with the slider 44 and can push up the cap 30 whether the cap 30 is rotated forward or backward. The upper surface (contact surface portion 16) of the pressing portion 12 viewed from the circumferential direction P is inclined downward toward the inside in the radial direction Q, so that deformation of the cylindrical peripheral wall 42 toward the outside in the radial direction Q can be prevented. Since a plurality of notches 48 are provided vertically on the inner surface of the cylindrical peripheral wall 42 and an outward-facing annular recess 5 is formed on the tip f side of the stopper cylindrical portion 4, the cap 30 can be easily rotated, thereby making it even easier to switch the discharge mode. [Explanation of symbols]

[0033] 2...Plug body 4...Plug barrel portion 5...Annular recess portion 6...Large diameter discharge port 8...Outward flange 9... Inner peripheral portion 10... Annular cylindrical portion 11... Outer peripheral portion 12... Pressing portion 14... Inclined guide portion 16...Abutment surface portion 17...Inner rib 18...Fracture line 20...plug portion 22...partition wall 24...pull ring 30... Cap 32... Cap body 34... Top wall 36... Sealing tube 38... Discharge tube 40... Small diameter discharge port 42... Cylinder peripheral wall 44... Slider 46... Edge portion 48... Notch portion 50...Top lid 52...Lid plate 54...High plate part 55...Step part 56...Low plate part 58...Descent tube 60...Bung rod part 62...Lid surrounding wall 100... pack body 102... mounting hole A... Engagement thread (prevention means) B... Receiving portion (prevention means) b1... Annular groove b2...Claw c...Projection d...Pinch e...Base f...Tip g...Gap h...Hinge i...Upper end of cylindrical wall j...Lower end k...Press-contact rib L...Latching rib m...Engagement piece n...Engaged part O...Orifice P...Circumferential direction Q...Radial direction s...Stress t...Gradient U...height V...vertical line w...projection length

Claims

1. a plug body (2) having a large-diameter discharge port (6) opened at the tip (f) side of a plug barrel portion (4) and an outward flange (8) attached to the base end (e) side of the plug barrel portion (4); a plug portion (20) disposed inside the plug barrel portion (4); a cylindrical cap (30) with a top that is rotatably fitted to the plug barrel (4) and has a small-diameter discharge port (40) opening in a top wall (34); A pair of separable retaining means (A, B) are formed on the cylindrical wall (42) of the cap (30) and the plug cylindrical portion (4) to allow the cap (30) to rotate and to restrict the cap (30) from slipping out upward, A slider (44) is provided on the lower end side of the cylindrical peripheral wall (42), and a pressing portion (12) is provided on the upper surface of the outward flange (8) for pushing up the slider (44) as the cap (30) is rotated, and the pair of retaining means (A, B) are separated when the slider (44) moves in the circumferential direction (P) of the plug cylindrical portion (4) beyond the pressing portion (12).

2. The pressing portion (12) is a pressing protrusion attached to a part of the outward flange (8) in the circumferential direction (P), 2. A capped discharge plug as described in claim 1, characterized in that the pair of retaining means (A, B) comprise an annular engaging groove (A) provided around the outer surface of the plug cylindrical portion (4), and an annular receiving portion (B) formed on the inner surface of the cylindrical peripheral wall (42) to receive this engaging groove (A).

3. 3. A capped discharge plug according to claim 1 or claim 2, wherein the pressing portion (12) has inclined guide portions (14) on both sides in the circumferential direction (P) when viewed from the radial direction (Q) of the plug cylindrical portion (4) for guiding the slider (44) upward.

4. The upper surface of the pressing portion (12) as viewed from the circumferential direction (P) is an abutment surface portion (16) that comes into contact with the slider (44) that passes over the pressing portion (12), 3. A capped discharge plug according to claim 1 or claim 2, wherein the contact surface portion (16) is formed so as to be inclined downward toward the inside of the cylindrical plug portion (4) in the radial direction (Q).

5. 2. The capped discharge plug according to claim 1, wherein a plurality of cutouts (48) extending from the lower end to the upper end of the cylindrical peripheral wall (42) are provided vertically at a distance from one another on the inner surface of the cylindrical peripheral wall (42).

6. A seal tube (36) is hung from the top wall (34) and is in close contact with the inner peripheral surface of the plug tube portion (4), 6. A capped discharge plug according to claim 1 or claim 5, characterized in that an annular recess (5) facing outward in the radial direction (Q) is formed on the tip (f) side of the tubular plug portion (4), thereby forming a gap (g) between the outer peripheral surface of the tubular plug portion (4) and the inner peripheral surface of the tubular peripheral wall (42) at the location where this annular recess (5) is formed.

Images