Discharge cap

Abstract

To provide a discharge cap which presses a push button part by pressing down a lever, sucks up a liquid content in a container by a pump action, discharges the liquid content from a discharge part and also allows the lever to be folded up when not in use.SOLUTION: A discharge cap includes a cap body B attached to a container A and an upper lid C covering an upper part of the cap body B. The cap body B has: a pump chamber α for sucking up a liquid content in the container A; and a push button part 23 for pressurizing and depressurizing the inside of the pump chamber α. The upper lid C has a discharge part 31 that is in communication with the pump chamber α and is formed in a discharge direction; a top wall 33 that is formed on an upper part of the discharge part 31; a top wall window part 36 opened in the top wall 33, and having a pressing part 38 that can be pressed down inward from a discharge direction; and a lever 35 that is folded from a discharge side of the top wall 33 via a hinge part 34. The lever 35 is folded back at the hinge part 34 to press the push button part 23 via the pressing part 38.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a discharge cap, and more particularly to a discharge cap that discharges liquid contained in a container from a discharge portion when a push button portion is pressed. [Background technology]

[0002] 2. Description of the Related Art Dispensing caps are known which are attached to containers that contain liquid contents, such as various food seasonings, cosmetics, medicines, etc., and which discharge the liquid contents from a discharge portion by pressing a push button portion. Furthermore, in order to improve the operability of this type of discharge cap, a discharge cap is also known that has a removably attached pressing operation body that presses the push button portion, thereby improving the pressing operation of the push button portion (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-132343 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the discharge cap described in Patent Document 1, the pressure plate portion of the operating lever part of the pressing operation body is pressed and the pressure plate part is pushed down using the hinge part of the operating lever part as an axis, so that the push button part can be pressed with little force due to the lever action.

[0005] However, the discharge cap described in Patent Document 1 had problems in that if the pressing operation body was left attached, the operating lever portion would get in the way when not in use, and there was also the risk of it being lost if the pressing operation body was removed.

[0006] The present invention has an object to solve the above-mentioned problems and to provide a discharge cap that, when a lever is pressed down, presses a push button portion, sucks up the contents inside a container through a pumping action, and discharges it from a discharge portion, and also has a lever that can be folded up when not in use. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the present invention provides a discharge cap comprising a cap body attached to a container and a top lid covering the upper part of the cap body, wherein the cap body has a pump chamber that draws up the liquid contents in the container and a push button portion that pressurizes and depressurizes the pump chamber, and the top lid has a discharge portion that communicates with the pump chamber and is formed in the discharge direction, a top wall formed at the upper part of the discharge portion, a top wall window portion that opens in the top wall and has a pressing portion that can be pressed down inward from the discharge direction, and a lever that is folded via a hinge portion from the discharge side of the top wall, and the lever is folded back at the hinge portion to press the push button portion via the pressing portion.

[0008] As an embodiment of the discharge cap, there is adopted a configuration in which the pressing portion is connected to the top wall window portion via a breakable weakened portion, the container is a double container consisting of an outer container and an inner container, and when the inner container is reduced in volume and deformed to discharge the contents, outside air is introduced between the outer container and the inner container, thereby maintaining only the outer container in its original shape, the pump chamber has a first valve portion that opens when the pressure is reduced and draws the contents from the inner container into the pump chamber, and a second valve portion that opens when the pressure is increased and discharges the contents from the pump chamber to the discharge portion, and the top lid is connected to the cap body via a hinge. Effect of the Invention

[0009] By adopting the above-mentioned configuration, the discharge cap of the present invention, when in use, can fold back the hinge portion of the folded lever and push down the lever to press the push button portion via the pressing portion, sucking up the liquid contents in the container by the pumping action and discharging it from the discharge portion. In addition, in the discharge cap of the present invention, the pressing portion is connected to the top wall window portion via a breakable weakened portion, so that it is possible to visually check whether the weakened portion has been broken and thereby confirm whether the container has been used or not, thereby preventing unauthorized use. [Brief description of the drawings]

[0010] [Figure 1] 1 is a side cross-sectional view of a double container with a discharge cap according to an embodiment of the present invention when the lid is closed. [Diagram 2] 1A and 1B are diagrams showing a discharge cap according to an embodiment of the present invention when closed, in which (a) is a top view and (b) is a front view seen from the discharge direction. [Diagram 3] FIG. 2 is a top view of the discharge cap according to the embodiment of the present invention when opened. [Figure 4] 4 is a side cross-sectional view of the cap body and the top lid of the embodiment of the present invention when closed. FIG. [Diagram 5] FIG. 2 is a diagram showing a plug and a first valve portion according to an embodiment of the present invention, where (a) is a top view and (b) is a half-sectional side view. [Figure 6] 1 is a side cross-sectional view of a discharge cap according to an embodiment of the present invention when the lever is folded back toward the rear side. [Figure 7] 4 is a side cross-sectional view of the discharge cap according to the embodiment of the present invention when the lever is pressed down. FIG. [Figure 8] 1 is a side cross-sectional view of the discharge cap according to an embodiment of the present invention when the lever is released from being pressed down. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Next, an embodiment of the discharge cap of the present invention will be described with reference to the drawings. In the following description, the upward direction in FIG. 1 is referred to as "upper", the downward direction as "lower", the leftward direction as "ejection direction", and the rightward direction as "rearward direction".

[0012] (Example) In Figure 1, A is a double container, B is a cap body attached to the double container A, C is an upper lid connected to the cap body B via a hinge D, E is a stopper body that closes the opening of the nozzle portion 1 of the double container A and is attached inside the cap body B, and F is a first valve portion that is attached to the upper surface of the stopper body E and has the function of a check valve (stops the contents from returning from the opening), and the cap body B, the upper lid C, the hinge D, the stopper body E, and the first valve portion F form a discharge cap. In addition, a pipe P is attached to the lower part of the plug E.

[0013] The main body portion B1, top cover C, and hinge D of the cap body B are formed from a normal basic resin G such as polypropylene or polyethylene that has a certain degree of rigidity and is difficult to deform, and the pressure-deformable portion B2 of the cap body B is formed from an elastic resin H of a soft material such as an elastically deformable elastomer or low-density polyethylene.

[0014] As shown in Figure 1, the double container A is formed as a laminated peelable container (delaminated container) having an outer container A1 and an inner container A2 that is peelably stacked on the inside of the outer container A1, and an end 3 of the inner container A2 is stacked on the upper end surface 2 of the mouth portion 1 of the outer container A1, closing the inside of the outer container A1. A male threaded portion 5 is formed on the upper outer peripheral surface of the mouth 1 of the outer container A1, with an engaging protrusion 6 protruding below it, and a through hole 7 is drilled at a predetermined location near the lower end of the male threaded portion 5 of the mouth 1, penetrating from the outside to the inside of the male threaded portion 5, for introducing outside air between the outer container A1 and the inner container A2, and a groove portion 8 cut out in the vertical direction is formed at the location of the through hole 7 of the male threaded portion 5.

[0015] The inner container A2 is made of a resin that can be deformed and reduced in volume, and the outer container A1 is made of a resin that has a certain degree of shape retention. As the content liquid is used, the inner container A2 peels off within the outer container A1, reducing its volume and deforming, and outside air is sucked in between the outer container A1 and the inner container A2 through the through hole 7, causing the outer container A1 to restore its original shape. The inner container A2 may be of any shape (e.g., a double container such as a shrinkable inner container housed inside an outer container) as long as it is capable of being reduced in volume and is not peeled off inside the outer container A1. The outer container A1 may also be of a shape in which the body can be squeezable.

[0016] The cap body B and the top cover C are formed using a two-color molding technique (core-back) in which a cavity (first mold) and a core (second mold) are engaged in the open state via a hinge D, basic resin G is injected to form the entire product, and then the core is cored back into the cavity and elastic resin H of a soft material such as an elastomer is injected to integrally mold the press-deformed portion B2 inside the main body portion B1 of the cap body B. Furthermore, the molding method is not limited to two-color molding, and can be insert molding or the like, as long as the part of the basic resin G and the part of the elastic resin H can be molded integrally. Note that the pressure-deformation part B2 may be molded integrally with the cap body B by adhesion or fitting. In this embodiment, the cap body B and the top cover C are integrally molded via a hinge D, but as long as the top cover C can be attached to the cap body B, the hinge D may be omitted and the top cover C may be molded separately.

[0017] As shown in Figs. 1 to 4, the cap body B is composed of a main body portion B1 and a pressure-deformable portion B2 formed inside the main body portion B1. The main body portion B1 is formed from a basic resin G and comprises an outer cylindrical wall 10 which is attached to the outer periphery of the nozzle portion 1 of the double container A, and a ring-shaped upper wall 11 which extends inward from the inner edge of the upper end of the outer cylindrical wall 10 and has an underside on which the outer periphery upper end surfaces of the stopper body E and the first valve portion F engage and are attached.

[0018] As shown in FIG. 3, a flow passage opening 12a is formed in the upper wall 11 at a position 90° to the left of the hinge D when viewed from above, and a flow passage tube 12 is erected around the flow passage opening 12a. Furthermore, a button opening 13 having a crescent shape when viewed from above is formed so as to form a straight edge 13a adjacent to the right side of the outer periphery of the flow passage tube 12 and an arc edge 13b that curves in an arc shape at a predetermined distance from the periphery of the upper wall 11 from both ends of the straight edge 13a on the opposite side to the flow passage tube 12, and a part of the pressure deformation portion B2 penetrates the button opening 13 and protrudes above the upper wall 11 to be integrally molded. A plurality of retaining projections 14 are disposed on the inner periphery lower portion of the flow passage tube 12, projecting from the inner periphery of the flow passage opening 12a.

[0019] The inner circumference of the outer circumferential wall 10 has an attachment portion 15 at the top that engages with and fixes the outer circumference of the plug E, and a plurality of vertical ribs 16 that engage (screw) with the outer circumference of the male screw portion 5 provided on the mouth 1 of the double container A at equal intervals below the attachment portion 15 and spaced apart from the attachment portion 15, and below the vertical ribs 16 is the inner circumference lower surface 10b that is in close contact with the outer circumference of the engagement protrusion 6, and a guide groove 17 that guides outside air up and down is recessed at a predetermined location of the attachment portion 15. In this embodiment, the cap is plugged and attached to the double container A, and the shape of the male screw portion 5 of the mouth 1 is transferred to the inside of each vertical rib 16 by stress relaxation caused by creep, forming a screw groove. The vertical ribs 16 provided on the outer circumferential wall 10 may be replaced with the male screw portion 5, and the male screw portion 5 provided on the mouth may be replaced with the vertical ribs 16. A hinge D is provided on the outer periphery of the outer circumferential cylindrical wall 10 at a predetermined position on the upper end.

[0020] The upper wall 11 is provided with a lid engagement portion 18 on its outer periphery for keeping the upper lid C closed, and furthermore, an outside air inlet hole 19 is formed on the hinge D side, penetrating from the upper surface to the inner surface and introducing outside air into the guide groove 17 of the outer cylindrical wall 10, and a lower recess 20 is formed on the lower surface for fixing and mounting the first valve portion F.

[0021] The pressure deformation portion B2 is formed from elastic resin H and includes a flat wall portion 22 that is integrally molded on the lower surface of the upper wall 11, a valve seat opening 22a of the flat wall portion 22 that is formed downward from the lower end of the flow path opening 12a and has an inner circumference at the lower end that is smaller in diameter than the inner diameter of the flow path opening 12a, and a dome-shaped push button portion 23 that penetrates the flat wall portion 22 and extends upwardly along a crescent shape when viewed from above the button opening 13, protrudes from the upper surface of the upper wall 11, and blocks the inward side.

[0022] The push button portion 23 is composed of a straight inclined wall 24 that slopes inwardly and extends upward along the straight edge 13a of the button opening 13, an arcuate inclined wall 25 that slopes inwardly and extends upward along the arcuate edge 13b, and a top wall 26 that extends from the inner periphery of the upper ends of each wall to close them, and is formed into a half-moon dome shape when viewed from above.

[0023] When the cap body B is molded, the second valve portion 27 is formed by sealing a movable ball valve 28 made of metal or synthetic resin between the inner circumference of the flow path opening 12a of the upper wall 11 and the upper edge surface of the valve seat opening 22a of the flat wall portion 22. The second valve portion 27 is configured so that under normal conditions, the ball valve 28 blocks the valve seat opening 22a, and when the content liquid is discharged, it presses the push button portion 23 of the pressure deformation portion B2, and when the pressure in the pump chamber α described below rises, the ball valve 28 is pushed and moves away from the edge of the valve seat opening 22a to open, and can move until it comes into contact with the inside of the multiple anti-slip protrusions 14 and is stopped, with flow paths provided between the multiple anti-slip protrusions 14 and between the inner periphery of the second valve portion 27 and the outer periphery of the ball valve 28.

[0024] The upper lid C comprises an attachment wall 30 attached to the upper outer periphery of the cap body B, a discharge portion 31 on the discharge direction side above the attachment wall 30, and side wall portions 32 erected on both sides of the discharge portion 31 to surround the rear direction, with a top wall 33 connected to the inside of the upper end of the side wall portion 32, and a lever 35 connected to the upper end of the discharge direction side of the discharge portion 31 via a hinge portion 34 so as to be able to rotate in reverse between the discharge direction side and the rear direction side.

[0025] A top wall window portion 36 is opened on the inside of the top wall 33, and has a straight section 36a on the rear side of the discharge portion 31 and arc sections 36b extending from both ends of the straight section 36a in the rear direction and curving inwardly. The top wall window portion 36 is connected to the end of the straight section 36a of the discharge portion 31 via a deformable thin-walled section 37, and is formed with a pressing section 38 that is reduced in diameter so as to create a gap along the arc section 36b. The pressing section 38 is connected to both sides of the rear side of the arc section 36b of the top wall window portion 36 via breakable weakened sections 39. Further, a notch 40 is cut out from the center of the back surface side of the arcuate portion 36 b of the top wall window portion 36 to the lower end of the side wall portion 32 with a predetermined width. An engagement portion 42 is formed at the lower end of the inner periphery of the mounting wall 30, which engages with the lid engagement portion 18 of the cap body B when the lid is closed, thereby maintaining the lid closed.

[0026] The discharge section 31 has a discharge outlet section 45 with a discharge outlet 45a drilled into the upper center on the discharge direction side, and a flow path inner tube 46 is vertically disposed in the center on the back direction side of the underside, which fits into and seals the inner periphery of the flow path tube 12 of the main body section B1 of the cap body B when attached, and the discharge outlet 45a of the discharge outlet section 45 and the inner periphery of the flow path inner tube 46 are connected via a flow path 47. The discharge portion 31 has a pressing portion 38 connected to the upper end on the rear side via a thin portion 37, and levers 35 connected to both sides via hinge portions 34 avoiding the discharge port portion 45 at the upper end on the discharge side.

[0027] When the lever 35 is tilted toward the discharge direction, as shown in Figures 1, 2 and 4, it is composed of a fork portion 50 that extends downward in the discharge direction from a pair of hinge portions 34 along both side surfaces of the discharge port portion 45, a connecting portion 51 that connects the lower portions of the fork portion 50 and is formed along the mounting wall 30, and an operating portion 52 that extends downward from the center of the lower end of the connecting portion 51 along the outer cylindrical wall 10 of the cap body B.

[0028] Furthermore, when lever 35 is flipped over via hinge portion 34, connecting portion 51 is set at a height such that it does not come into contact with the tip of outlet portion 45, and when lever 35 is flipped over and folded back toward the rear side, as shown in FIG. 6, the wall surface of connecting portion 51 comes into contact with the rear side of the upper surface of pressing portion 38. After being folded back toward the rear side, when lever 35 is operated, as shown in FIG. 7, operating portion 52 is formed with a width that allows it to move up and down inside cutout portion 40. The hinge portion 34 is formed so that the lever 35 can be inverted between the discharge direction side and the rear direction side with respect to the discharge portion 31 and can be folded and fixed at a predetermined angle.

[0029] As shown in Figures 1 and 5, the stopper body E is composed of a ring-shaped outer wall portion 55 whose outer periphery engages and is fixed to the mounting portion 15 on the inner periphery of the outer cylindrical wall 10 of the cap body B and whose lower surface abuts the upper surface of the end portion 3 of the inner container A2 of the double container A, an inner tube 56 that is suspended from the lower surface of the outer wall portion 55 and inserted into the upper inner periphery of the inner container A2, and a partition stopper portion 57 that seals the upper inner end of the outer wall portion 55. In addition, a positioning recess 55a for engaging with the cap body B is recessed into the outer peripheral edge of the outer wall portion 55, and an upper recess 58 for mounting the first valve portion F is recessed into the upper surface of the outer wall portion 55. A plug opening 59 penetrating vertically is formed in the central position of the partition plug portion 57, and a mounting tube 60 for mounting a pipe P inwardly is suspended from the edge of the plug opening 59 on the lower surface.

[0030] As shown in Figures 1 and 5, the first valve portion F is composed of an upper engagement cylindrical portion 65, the upper part of which engages with the lower recess 20 of the upper wall 11 of the cap body B, a partition valve portion 66 extending inward from the lower inner circumference of the upper engagement cylindrical portion 65 and attached to the upper surface of the partition stopper portion 57 of the stopper E, a lower engagement cylindrical portion 67 extending vertically from the lower surface of the partition valve portion 66 and engaging with the upper recess 58 of the outer wall portion 55 of the stopper E, and a protrusion 68 erected from the upper surface of the partition valve portion 66. The upper engaging tube portion 65 has positioning protrusions 65a (in this embodiment, three at intervals in the circumferential direction) that are formed radially outward from the outer circumferential surface and are capable of engaging with the positioning recesses 55a of the plug E. In this embodiment, the protrusion 68 is erected from the first valve portion F toward the second valve portion 27, but this is not limited thereto, and the protrusion 68 may be erected from the plug body E through the first valve portion F toward the second valve portion 27.

[0031] The partition valve portion 66 is provided with a valve orifice 69 that opens centered on a central position, a valve plate 70 that has a gap 69a between it and the inner edge of the valve orifice 69 and abuts against the upper surface around the plug opening 59 of the partition plug portion 57 of the plug body E to close the plug opening 59, and a plurality of (in this embodiment, three evenly spaced) deformable connecting pieces 71 that connect the valve orifice 69 and the valve plate 70 and are formed to be deformable.

[0032] Next, the manner of use and the effects of this embodiment will be described. As shown in FIG. 3, the discharge cap of this embodiment is integrally molded by two-color molding using a base resin G and an elastic resin H, with a cap body B and a top cover C opened via a hinge D. Although not shown, the lever 35 is molded via the hinge portion 34 at an angle that does not interfere with the molding of the entire top cover C.

[0033] After the cap is formed, the cap is bent with the hinge D as a fulcrum, and the top cover C is rotated in the closing direction relative to the cap body B to close the cap, and the lever 35 is folded in the discharge direction relative to the top cover C. When the lid is closed, as shown in FIG. 1, the upper lid C covers the upper part of the outer cylindrical wall 10 of the cap body B, and the engagement portion 42 provided on the inner circumference of the mounting wall 30 of the upper lid C engages with the lid engagement portion 18 on the outer circumference of the upper wall 11 of the cap body B, thereby maintaining the closed state.

[0034] In addition, the outer periphery of the flow path inner tube 46 of the upper cover C is inserted into the upper inner periphery of the flow path tube 12 of the cap body B, sealing the inside of the flow path tube 12 and opening up the flow path from the inside of the flow path tube 12 to the discharge outlet 45a of the discharge outlet portion 45 via the flow path 47 of the upper cover C. Furthermore, the lower surface of the pressing portion 38 in the top wall 33 of the upper lid C abuts against or comes close to the upper surface of the top wall 26 of the push button portion 23 of the press-deformation portion B2 of the cap body B.

[0035] Next, the first valve portion F is inserted from above so that the positioning protrusion 65a of the first valve portion F engages with the positioning recess 55a of the plug E, and the plug E and the first valve portion F are aligned. The lower engagement tube portion 67 of the first valve portion F is then engaged with the upper recess 58 of the outer wall portion 55 of the plug E to attach them. At that time, the lower surface of the valve plate 70 of the first valve portion F comes into close contact with the upper surface of the partition plug portion 57 near the plug opening 59 of the plug body E to close the plug opening 59.

[0036] The plug body E with the first valve portion F attached is aligned so that the positioning recess 55a is in the positioning portion (not shown) of the cap body B, and is attached from below to the cap body B, completing the set-up as the discharge cap of this embodiment. Further, the lower surface of the press-deformed portion B2 of the cap body B, the inner surface of the upper wall 11, and the upper surface and inner surface of the first valve portion F form a pump chamber α.

[0037] Next, after fitting a pipe P into the mounting tube 60 of the stopper body E of the set discharge cap, the cap body B is screwed onto the mouth tube portion 1 of the double container A whose inner container A2 is filled with the liquid. The shape of the male thread portion 5 is transferred to the inside of the vertical rib 16 of the cap body B, and the thread groove formed in the vertical rib 16 engages with the male thread portion 5 of the double container A. At the same time, the lower surface of the outer wall portion 55 and the outer peripheral surface of the inner tube 56 of the stopper body E are tightly fitted against the upper surface and inner peripheral surface of the end portion 3 of the inner container A2 of the double container A. In this embodiment, the discharge cap is attached to the mouth portion 1 of the double container A by plugging, but it may also be attached by screwing a female threaded portion screwed into the outer cylindrical wall 10 of the cap body B into a male threaded portion 5 screwed into the mouth portion 1.

[0038] The outer periphery of the engaging ridges 6 of the outer container A1 is brought into close contact with the inner periphery lower surface 10b of the outer periphery cylindrical wall 10 of the set cap body B, sealing the inside of the outer periphery cylindrical wall 10 from below. In addition, outside air is introduced from the outside air inlet hole 19 opening in the upper wall 11 of the cap body B through the guide groove 17 in the mounting portion 15 of the outer cylindrical wall 10, the gap between the spacing surface 10a and the outer circumference of the double container A, and the groove portion 8 in the male thread portion 5 of the outer container A1, as an introduction path between the outer container A1 and the inner container A2 through the through hole 7.

[0039] After the container of this embodiment is set, the upper lid C covers the push button portion 23 of the pressure deformation portion B2 of the cap body B, so that even if the container is dropped, the push button portion 23 will not be pressed and liquid will not leak out from the discharge outlet portion 45.

[0040] To use the liquid contents in the double container A, first place your finger on the operating part 52 of the lever 35 of the top lid C on the discharge direction side, lift it using the hinge part 34 as a fulcrum, and flip the operating part 52 side toward the rear direction. As shown in Figure 6, the hinge part 34 is folded back and the lever 35 is flipped so that the operating part 52 is on the rear direction side relative to the top lid C, and the connecting part 51 of the lever 35 abuts against the upper surface of the pressing part 38 in the top wall window part 36 of the top wall 33 of the top lid C.

[0041] Next, when lever 35 is pushed down with hinge portion 34 as a fulcrum, connecting portion 51 pushes pressing portion 38, and the rear side of pressing portion 38 is pressed down against discharge portion 31 via thin portion 37, as shown in FIG. When the pressing portion 38 is pressed down on the rear side together with the lever 35, with the thin-walled portion 37 as a fulcrum, the pressing portion 38 breaks the weakened portion 39 connected to the top wall window portion 36 of the top wall 33 and descends, pressing against the top wall 26 of the push button portion 23 of the press-deformed portion B2 of the cap body B with which the lower surface of the rear side of the pressing portion 38 abuts. When the push button portion 23 is pressed, the pressure deformation portion B2 deforms to pressurize the pump chamber α, and the air in the pressurized pump chamber α presses the valve plate 70 of the first valve portion F against the partition plug portion 57 of the plug body E, pushes up the ball valve 28 of the second valve portion 27, and is opened by being moved away from the edge of the valve seat opening 22a. The air forms a flow passage between the outer periphery of the ball valve 28 and is discharged from the inside of the flow path tube 12 through the flow path 47 and to the outside from the discharge port 45a of the discharge port portion 45.

[0042] Thereafter, when the pressure on the push button portion 23 by the lever 35 is released, the deformation of the pressure-deformed portion B2 returns to its original shape, pushing up the top wall 26 and pushing back the rear side of the pressure portion 38 and the lever 35, while creating negative pressure in the pump chamber α. When the pressure inside the pump chamber α becomes negative, the ball valve 28 of the second valve section 27 is sucked toward the valve seat opening 22a, again blocking the valve seat opening 22a, and the valve plate 70 connected via the deformed connecting piece 71 of the first valve section F is sucked toward the pump chamber α, the valve plate 70 separates from the upper surface of the partition plug section 57 of the plug body E, and the plug opening 59 opens, so that the content liquid in the inner container A2 is sucked into the pump chamber α via the plug opening 59 and the pipe P. In this embodiment, the protrusion 68 of the first valve portion F is formed so that its upper end surface is close to the ball valve 28 of the second valve portion 27, thereby preventing the ball valve 28 from falling out of the valve seat opening 22a.

[0043] When the deformation of the pressure-deformed portion B2 has finished, as shown in Figure 8, the pressure inside the pump chamber α returns to normal, suction of the valve plate 70 of the first valve portion F stops, the valve plate 70 returns to its original position, the valve plate 70 and the upper surface of the partition stopper portion 57 of the stopper body E come into close contact with each other, the stopper opening 59 is quickly sealed, and the content liquid that was sucked into the pump chamber α remains. At the same time, the liquid content in the inner container A2 decreases.

[0044] When the push button portion 23 of the cap body B is pressed again by the lever 35 via the pressing portion 38, the liquid contents remaining in the pump chamber α are pressurized, pushing out the ball valve 28 of the second valve portion 27, opening the valve seat opening 22a, and causing the pressurized liquid contents to flow into the flow path tube 12 via the flow path opening 12a. Therefore, the liquid contents can be discharged from the flow path tube 12 via the flow path 47 and from the discharge port 45a of the discharge port portion 45 in an amount corresponding to the amount by which the push button portion 23 is pressed.

[0045] By repeatedly pressing and releasing the push button portion 23 using the lever 35, the contents can be sucked into the pump chamber α and then discharged from the pump chamber α through the valve seat opening 22a and the flow path 47 to the outside through the discharge port 45a of the discharge port portion 45. In addition, when the pressure on the push button portion 23 by the lever 35 is released, negative pressure is created inside the pump chamber α, which sucks in the ball valve 28 and causes it to come into close contact with the valve seat opening 22a, blocking the valve seat opening 22a. Due to the time lag between the negative pressure in the pump chamber α and the seating of the ball valve 28, the content liquid remaining in the flow path tube 12 is sucked back (pulled back) into the inner container A2 from the valve seat opening 22a, so that the content liquid does not drip outside.

[0046] As the liquid contents move into the pump chamber α while reducing the volume of the inner container A2 as it is used, the first two or three pressing operations can expel any air remaining in the inner container A2 and the pump chamber α through the second valve section 27, and thereafter, the liquid contents can be prevented from coming into contact with air.

[0047] When the content liquid has been used up and the container is to be stopped, the user places his / her finger on the operating portion 52 of the lever 35 on the rear side, lifts it using the hinge portion 34 as a fulcrum, and then inverts it back to the discharge direction. When the lever 35 is returned, the pressure portion 38 of the top lid C is pressed down, and the push button portion 23 of the pressure deformation portion B2 is no longer pressed down. Furthermore, as shown in Figure 1, the top lid C covers the push button portion 23 of the pressure deformation portion B2 of the cap body B, thereby preventing the pump chamber α from being pressurized and preventing the contents from leaking out from the discharge port portion 45.

[0048] First, by pressing down on operating portion 52 of lever 35, pressing portion 38 is pressed down and weakened portion 39 connected to top wall window portion 36 of top wall 33 is broken. Therefore, even if lever 35 is returned to the discharge direction side after using the contents, it is possible to check from above top wall 33 to see whether weakened portion 39 has been broken or not, thereby confirming whether the container has been used or not, thereby preventing tampering or unauthorized use.

[0049] In the discharge cap of this embodiment, the pressure-deformation portion B2 of the cap body B is made of an elastically deformable elastic resin H, and the main body portion B1 of the cap body B is made of a basic resin G, and the two resins can be molded integrally. Therefore, there is no need to assemble after molding the separate resins, and the cap will not come off after assembly, resulting in good productivity. In addition, the pressure-deformation portion B2 of the integrally molded elastic resin H provides a good feel when pressed, and the elastic deformation is stable.

[0050] The operating part 52 of the lever 35 is pressed down with the hinge part 34 as a fulcrum, and the pressing part 38 is pressed down to deform the pressing deformation part B2. Therefore, by pressing down the rear side end of the operating part 52, the pressing deformation part B2 can be deformed with a weaker force by using the principle of a lever. Furthermore, as the pressure-deformed portion B2 is restored to its original state, the lever 35 and the pressing portion 38 are pushed up with the hinge portion 34 and the thin portion 37 as fulcrums, so that the pressing portion 38 can be pushed back with a weaker force. Furthermore, since the lever 35 is operated on the rear side of the operating portion 52, it can be operated at a position away from the discharge port 45, and the fingers etc. will not get dirty with the liquid contents discharged from the discharge port 45a while the lever 35 is being operated. [Industrial Applicability]

[0051] When in use, the discharge cap of the present invention folds back the hinge portion of the folded lever and presses down the lever, thereby pressing the push button portion via the pressing portion, sucking up the liquid contents inside the container by the pumping action and discharging it from the discharge portion, making it suitable as a discharge cap for containers that store liquid contents such as various food seasonings, as well as cosmetics, medicines, etc. [Explanation of symbols]

[0052] A Double container A1 Outer container A2 Inner container B Cap body B1 Main unit B2 Pressed deformation part C Top lid D Hinge E Plug body F 1st valve part G Basic resin H Elastic Resin P Pipe α Pump Room 1 Mouth barrel part 2 Upper end surface 3 End 5 Male thread 6 Engagement ridge 7 Through hole 8 Groove 10 Outer cylindrical wall 10a Spacing surface 10b Inner periphery lower surface 11 Upper wall 12 Flow tube 12a Flow passage opening 13 Button opening 13a Straight Edge 13b Circular edge 14 Anti-slip protrusion 15 Mounting part 16 Vertical ribs 17 Guide groove 18 Lid engagement part 19. Outside air intake 20 Lower recess 22 Flat wall section 22a Valve seat opening 23 Push button section 24 Straight inclined wall 25 Circular inclined wall 26 Ceiling Wall 27 Second valve section 28 Ball valve 30 Mounting wall 31 Discharge part 32 Side wall 33 Top Wall 34 Hinge part 35 Lever 36 Top wall window 36a Straight section 36b Arc section 37 Thin Section 38 Pressing part 39 Weakened part 40 Cutout 42 Engagement part 45 Discharge port 45a Discharge port 46 Flow passage inner cylinder 47 Flow Path 50 Forked part 51 Connecting part 52 Operation section 55 Exterior wall 55a Positioning recess 56 Inner cylinder 57 Bulkhead plug part 58 Upper recess 59 Stopper opening 60 Mounting tube 65 Upper engagement cylinder 65a Positioning protrusion 66 Bulkhead valve part 67 Lower engagement cylinder 68 Protrusion 69 Valve Orifice 69a Gap 70 Valve plate 71 Deformed connecting piece

Claims

1. A discharge cap including a cap body that is attached to a container and a top lid that covers an upper portion of the cap body, The cap body has a pump chamber that draws up the liquid in the container, and a push button portion that pressurizes and depressurizes the inside of the pump chamber, the upper lid has a discharge portion communicating with the pump chamber and formed in the discharge direction, a top wall formed at an upper portion of the discharge portion, a top wall window portion opening in the top wall and having a pressing portion formed therein that can be pressed down inwardly from the discharge direction, and a lever that is folded via a hinge portion from the discharge side of the top wall; The lever is folded back at the hinge portion to press the push button portion via the pressing portion.

2. 2. The discharge cap according to claim 1, wherein the pressing portion is connected to the top wall window portion via a breakable weakened portion.

3. The container is a double container consisting of an outer container and an inner container, and when the inner container is reduced in volume and the liquid contained therein is discharged, outside air is introduced between the outer container and the inner container, so that only the outer container maintains its original shape.

3. The discharge cap according to claim 1, wherein the pump chamber has a first valve portion that opens when the pressure is reduced and draws the liquid contained in the container into the pump chamber, and a second valve portion that opens when the pressure is increased and discharges the liquid contained in the container from the pump chamber to the discharge portion.

4. 3. The discharge cap according to claim 1, wherein the top cover is connected to the cap body via a hinge.

5. 4. The discharge cap according to claim 3, wherein the top cover is connected to the cap body via a hinge.

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