Dispensing cap

Abstract

To provide a pouring cap for discharging a content liquid little by little, capable of surely sealing a pouring cylinder by a sealing cylinder when closing a lid.SOLUTION: A pouring cap comprises a cap body A1 and an upper lid A2 for opening / closing the cap body A1. The cap body A1 has a body part B to be attached to a mouth 1 of a container body D, and a button part C having an elastomeric resin L integrally formed inside the body part B. The body part B has a pouring opening 9 and a pouring cylinder 10 erected from the periphery of the pouring opening 9. The button part C has a cylindrical body 21 formed on the inner periphery of the pouring opening 9, and a push button 22 which penetrates the body part B through the cylindrical body 21 and projects upward. The upper lid A2 has a sealing cylinder 32 hung down from the top wall 30 and inserted into the pouring cylinder 10. When the lid is closed, the outer periphery of the sealing cylinder 32 is inserted into the inner periphery of the pouring cylinder 10 to form a first seal part "a", and the lower end of the outer periphery is inserted into the inner periphery of the cylindrical body 21 to form a second seal part "b".SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a pouring cap, and particularly to a pouring cap that discharges content liquid little by little.

Background Art

[0002] Conventionally, when it is desired to pour out the content liquid little by little from a container body filled with content liquid such as chili oil and olive oil, a pouring cap is known which is provided with a button part on the cap body and can adjust the discharge amount of the content liquid from the pouring cylinder by pressing the button part in a state where the container body is tilted.

[0003] As this type of pouring cap, conventionally, a pouring cap has been known, in which a top wall of a pouring plug with a nozzle, whose peripheral wall is fitted to the mouth of the container body, is formed by: an inward flange provided at the upper end of the peripheral wall; a short cylinder that stands up from the inner peripheral edge of the inward flange and has the nozzle protruding forward; a spiral-shaped elastic cylinder with a small diameter upper part that stands up from the upper end of the short cylinder; and a capped small cylinder where the upper surface of the cylinder part standing up from the upper end of the cylinder is closed by a top plate, and the spiral-shaped elastic cylinder has a cylinder wall that is sequentially thinned from the cylinder wall part at one of the upper and lower ends to the cylinder wall part at the other end along the spiral direction of the spiral-shaped elastic cylinder (see Patent Document 1).

Prior Art Literature

Patent Literature

[0004]

Patent Document 1

Summary of Invention

Problem to be Solved by the Invention

[0005] However, since content liquid containing oil such as chili oil has high permeability, the pouring cap described in Patent Document 1 has a problem that it is difficult to seal the pouring cylinder (nozzle) when the cap is closed, and the content liquid is likely to seep out from the pouring cylinder.

[0006] The present invention aims to solve the above problems and to provide a dispensing cap that dispenses liquid contents in small amounts, in which the dispensing cylinder can be reliably sealed by a sealing cylinder when the lid is closed. [Means for solving the problem]

[0007] To solve the above problems, the present invention provides a dispensing cap comprising a cap body attached to a container body and an upper lid that can open and close the cap body, wherein the cap body is attached to the mouth of the container body. Formed from basic resin A main body and an elastically deformable part inside the main body. Flexible Elastic resin in The main body has a dispensing opening that penetrates the main body and a dispensing cylinder erected around the dispensing opening, the button has a cylindrical body formed on the inner circumference of the dispensing opening and a push button body that penetrates the main body through the cylindrical body and protrudes upward, and the top cover is, Formed from a basic resin, It has a top wall and a sealing cylinder that hangs down from the top wall and is inserted into the dispensing cylinder, and when the lid is closed, the outer circumference lower end It is inserted into the inner circumference of the dispensing cylinder and forms the first seal portion. Upper cylinder and , It is suspended from the inner circumference of the lower end of the upper cylindrical part, The lower edge of the outer circumference Button part It is inserted into the inner circumference of the cylindrical body and forms the second seal portion. Having a lower cylindrical portion The system employs a configuration characterized by the following features.

[0008] As an embodiment of the dispensing cap, the main body has a crescent-shaped button opening adjacent to the dispensing cylinder through which the button passes, and the push button body has a concave arc-shaped inclined wall formed on the dispensing cylinder side, a convex arc-shaped inclined wall formed on the opposite side of the dispensing cylinder, and a top wall that closes the inner upper end of the concave arc-shaped inclined wall and the convex arc-shaped inclined wall. The button part The design features a configuration in which the main body and the component are molded together using a two-color molding process. [Effects of the Invention]

[0009] By adopting the above configuration, the dispensing cap of the present invention prevents the liquid contents from leaking out of the dispensing cylinder when the lid is closed, as the sealing cylinder forms a first seal portion and a second seal portion. Furthermore, the two sealing parts of the sealing cylinder, the first and second sealing parts, have different degrees of adhesion due to the difference in hardness between the dispensing cylinder, which is made of basic resin, and the button part, which is made of elastic resin. In particular, the second sealing part with the elastic resin cylinder is more easily deformed and therefore adheres better, so the seal can be further enhanced by the difference in hardness and its balance. Furthermore, the button portion of the dispensing cap can be easily, stably, and integrally molded using two-color molding. [Brief explanation of the drawing]

[0010] [Figure 1] This figure shows a container fitted with a dispensing cap, which is an embodiment of the present invention; (a) is a top view with the lid open, and (b) is a side cross-sectional view with the lid closed. [Figure 2] This is an enlarged view of the main part in Figure 1(b). [Figure 3] The figure shows the cap body of a dispensing cap, which is an embodiment of the present invention, with (a) being a top view and (b) being a side cross-sectional view. [Figure 4] This is a side cross-sectional view showing the usage state of a container fitted with a dispensing cap, which is an embodiment of the present invention. [Modes for carrying out the invention]

[0011] Next, an embodiment of the present invention in which the dispensing cap is a hinged cap will be described with reference to the drawings. In the following explanation, the upward direction in Figure 1(b) will be referred to as "up" and the downward direction as "down".

[0012] (Examples) In Figures 1 and 2, A is a hinged cap that serves as a dispensing cap attached to the container body D. It consists of a cap body A1, which is attached to the container body D, and a button part C, and an upper lid A2 that is connected to the cap body A1 via a hinge part A3. In addition, for hinge cap A, the main body portion B of the upper lid A2, the hinge portion A3, and the cap main body A1 is formed of a conventional base resin H that has a certain degree of rigidity and is difficult to deform, such as polypropylene or polyethylene (e.g., LLDPE), and the button portion C connected and provided inward of the main body portion B is formed of a flexible elastic resin L that can be elastically deformed, such as an elastomer or low-density polyethylene (LDPE). The container body D has a mouth portion 1 at an upper part thereof, and an engaging projection 2 is provided on an outer peripheral surface of the mouth portion 1 for attaching the cap body A1 thereto.

[0013] Hinge cap A is formed by two-color molding (core back method): after a cavity (first mold) and a core (second mold) formed in an open state are engaged, the base resin H is injected to form the entire hinge cap A, the core is moved back relative to the cavity, the elastic resin L such as an elastomer is injected, and the button portion C is integrally molded inward of the main body portion B of the cap main body A1. Furthermore, the hinge cap A can be integrally molded not only by two-color molding but also by insert molding or the like; however, the formation method is not limited as long as the portion formed of the base resin H and the portion formed of the elastic resin L can be integrally formed, including, in addition to integral molding such as two-color molding and insert molding, forms in which the main body portion B and the button portion C are fitted and held, and forms in which the main body portion B and the button portion C are welded.

[0014] As shown in Figures 1 to 3, the cap body A1 is composed of the main body portion B and the button portion C connected and provided inward of the main body portion B. The main body portion B is formed of the base resin H, and includes: an outer peripheral cylindrical wall 5 whose inner periphery engages with an outer periphery of the mouth portion 1 of the container body D; a ring-shaped upper wall 6 extending inward from an upper end inner edge of the outer peripheral cylindrical wall 5, with an upper end surface of the mouth portion 1 being in close contact with a lower surface of the ring-shaped upper wall 6; an inner cylindrical wall 7 vertically provided at an inner edge of the upper wall 6; and a partition wall 8 extending inward from the inner edge of the upper wall 6. In the partition wall 8, as shown in Fig. 1(a), when viewed from above, a pouring opening 9 is bored at a position 90° to the left from the hinge portion A3, a pouring cylinder 10 with an inner diameter α is erected from the periphery of the pouring opening 9, and further, a concave arc 11a curved in an arc shape at a predetermined interval from the right side of the outer periphery of the pouring cylinder 10, and a convex arc 11b curved in an arc shape at a predetermined interval from the inner circumference of the inner cylinder wall 7 on the opposite side of the pouring cylinder 10 from both ends of the concave arc 11a are formed, a crescent-shaped button opening 11 when viewed from above is opened, and a part of the button portion C penetrates the button opening 11 and protrudes above the partition wall 8 to be integrally molded.

[0015] On the lower part of the inner circumference of the outer peripheral cylinder wall 5, a fitting portion 15 that engages with the engaging protrusion 2 provided on the opening 1 of the container body D is protruded. On the upper part of the outer circumference of the outer peripheral cylinder wall 5 on the opposite side to the hinge portion A3, an engaging step portion 16 is recessed in a predetermined range (in this embodiment, the range of the semicircle on the opposite side to the hinge portion A3), and further, a finger hook recess 17 is recessed in the center on the opposite side to the hinge portion A3.

[0016] On the upper part of the upper wall 6, a lid engaging portion 18 that maintains the closed state of the upper lid A2 is provided. The cap body A1 is attached to the container body D, with the opening 1 of the container body D sandwiched between the inner circumference of the outer peripheral cylinder wall 5, the outer circumference of the inner cylinder wall 7 and the lower surface of the upper wall 6.

[0017] The upper part of the pouring cylinder 10 is formed in a trumpet shape for good liquid draining, and as shown in Fig. 2, an inner circumferential step 19 having a larger diameter than the inner diameter α of the pouring cylinder 10 is recessed on the lower part of the inner circumference.

[0018] The button portion C is formed of elastic resin L, and includes: a partition wall portion 20 integrally molded on the lower surface of the partition wall 8; a cylinder body 21 erected from the partition wall portion 20 toward the pouring cylinder 10, having an opening 20a with an inner diameter β whose inner circumference is smaller in diameter than the inner diameter α of the pouring cylinder 10, and whose outer circumference is integrally molded on the inner circumference of the inner circumferential step 19 of the pouring cylinder 10; and a dome-shaped push button body 22 that penetrates the button opening 11 from the partition wall portion 20, extends upward inclined along the crescent shape of the button opening 11 when viewed from above, protrudes from the upper surface of the partition wall 8, and closes the inner side.

[0019] The push button body 22 is composed of a concave arc inclined wall 25 that inclins inward along the concave arc 11a of the button opening 11 and extends upward, a convex arc inclined wall 26 that inclins inward along the convex arc 11b and extends upward, and a top wall 27 that extends from the inner circumference of the upper ends of each and closes them, forming a crescent-shaped dome when viewed from above.

[0020] As shown in Figures 1 and 2, the top lid A2 comprises a disc-shaped top wall 30 and an outer peripheral wall 31 that extends vertically from the periphery of the top wall 30 and has a hinge portion A3 attached at a predetermined position. A sealing cylinder 32 is extended vertically from the lower surface of the top wall 30 and is inserted into the inner circumference of the dispensing cylinder 10 of the cap body A1 when the lid is closed. The top wall 30 has a recess 33 formed from the bottom surface within a predetermined range on the outer circumference of the sealing cylinder 32, making that portion of the top wall 30 thinner and more easily deformable.

[0021] The outer peripheral wall 31 has a hinge portion A3 attached to a predetermined position at the lower end of the outer circumference, a grip portion 35 for gripping fingers or the like on the opposite side of the hinge portion A3, and an engaging portion 36 at the lower end of the inner circumference that engages with the lid engaging portion 18 of the cap body A1 when the lid is closed to maintain the closed lid, and an engaging wall portion 37 is provided projecting from a predetermined area on the outer side of the lower end surface opposite to the hinge portion A3 (in this embodiment, the semicircular area opposite to the hinge portion A3) that engages with the engaging step portion 16 of the cap body A1 when the lid is closed. Furthermore, a groove 38 is recessed in the lower end surface of the outer peripheral wall 31 within a predetermined range and height, so that when the lid is opened, the part of the outer peripheral wall 31 inside the groove 38 is more easily deformed, allowing the lid to be opened smoothly.

[0022] The sealing cylinder 32 is suspended from the lower surface of the top wall 30 and consists of an upper cylinder portion 40, which, when the lid is closed, has its lower outer circumference inserted into the inner circumference of the dispensing cylinder 10 of the cap body A1 and forms a first sealing portion a, and a lower cylinder portion 41, which is suspended from the inside of the lower end of the upper cylinder portion 40, has an outer circumference that is smaller in diameter than the upper cylinder portion 40, and has its lower outer circumference inserted into the inner circumference of the cylindrical body 21 of the button portion C and forms a second sealing portion b. Furthermore, when the lid is closed, a space γ is formed between the first sealing portion a and the second sealing portion b, and between the inner circumference of the dispensing cylinder 10 and the outer circumference of the lower cylinder portion 41.

[0023] Next, the usage and effects of this embodiment will be described. In this embodiment, the hinged cap A is integrally molded using two-color molding with a base resin H and an elastic resin L, with the cap body A1 and the top lid A2 opened via the hinge portion A3. The cap body A1 is integrally molded such that the lower surface of the partition wall 8 of the main body B is covered by the partition wall 20 of the button C, and the button opening 11 is closed by the push button body 22.

[0024] After the hinge cap A is formed, it is bent using the hinge portion A3 as a pivot point, and the top lid A2 is rotated in the closing direction relative to the cap body A1 to close it. When the lid is closed, as shown in Figure 1(b), the top lid A2 covers the area above the outer cylindrical wall 5 of the cap body A1, and the engaging portion 36 provided on the inner circumference of the outer wall 31 of the top lid A2 engages with the lid engaging portion 18 on the outer circumference of the top wall 6 of the cap body A1, thereby maintaining the closed state.

[0025] In the closed state, the hinged cap A is attached to the opening 1 of the container body D, which is filled with liquid, by placing the outer cylindrical wall 5 and inner cylindrical wall 7 of the cap body A1 against it and pressing it in from above. When the lid is closed, the lower outer circumference of the upper cylindrical portion 40 of the sealing cylinder 32 of the upper lid A2 is inserted into the inner circumference of the dispensing cylinder 10 of the cap body A1, forming the first seal portion a, and the lower outer circumference of the lower cylindrical portion 41 is inserted into the inner circumference of the cylindrical body 21 of the button portion C, forming the second seal portion b. Thus, the lid is sealed in two places, which enhances the seal inside the dispensing cylinder 10.

[0026] Furthermore, the first sealing portion a and the second sealing portion b of the sealing cylinder 32 have different degrees of adhesion due to the difference in hardness between the dispensing cylinder 10, which is made of basic resin H, and the cylindrical body 21 of the button portion C, which is made of elastic resin L. In particular, the second sealing portion b, which is made of the soft elastic resin L, is more easily deformed and therefore has a higher degree of adhesion. Thus, the seal can be further enhanced by the difference in hardness and its balance. Furthermore, since a space γ is formed between the first seal portion a and the second seal portion b, even if one seal comes off during capping or when the container is dropped upside down, the space γ prevents it from affecting the other seal. Also, the second seal portion b has increased adhesion due to the elasticity of the cylindrical body 21 made of a soft elastic resin L, thus reliably preventing liquid leakage.

[0027] When using a container fitted with the hinge cap A of this embodiment, lifting the top lid A2 by placing a finger on the knob 35 releases the engagement between the engagement portion 36 of the top lid A2 and the lid engagement portion 18 of the cap body A1, causing the top lid A2 to rotate around the hinge portion A3 as a pivot point and open. When the lid is opened, the sealing cylinder 32 of the top lid A2 lifts up, releasing the seal between the sealing cylinder 32 and the inner circumference of the dispensing cylinder 10 and the inner circumference of the cylindrical body 21 of the cap body A1, as well as the first seal part a and the second seal part b, and the dispensing cylinder 10 opens.

[0028] As shown in Figure 4, the container body D with the cap body A1 attached is tilted with the dispensing tube 10 facing downwards, allowing the liquid contents to move from the container body D into the cap body A1. As a result, the liquid contents that have moved into the cap body A1 either stop inside the cylindrical body 21 through the opening 20a of the partition wall 20, or, if they flow into the dispensing cylinder 10, they stop inside the dispensing cylinder 10, and will not flow out from the tip of the dispensing cylinder 10.

[0029] Next, when the push button body 22 of the button part C, which is integrally molded with the cap body A1, is pressed from the outside inward, the inside of the container is pressurized, and the liquid contents are pushed out from inside the cylindrical body 21 and the dispensing tube 10, and discharged from the tip of the dispensing tube 10. When the push button body 22 is pressed, as shown in Figures 1(a) and 3(a), the push button body 22 is formed in a crescent-shaped dome when viewed from above. The convex arc inclined wall 26 and the top wall 27 of this part, which curve from the opposite side of the dispensing cylinder 10, are easily deformed, while the concave arc inclined wall 25 and the top wall 27 of this part, which curve from the dispensing cylinder 10 side, are difficult to deform. The concave arc inclined wall 25, which is difficult to deform, acts as a fulcrum for the easily deformable convex arc inclined wall 26, making it easy to press the push button body 22 from the opposite side of the dispensing cylinder 10 toward the dispensing cylinder 10, and the direction of deformation is stable.

[0030] When the pressure on the push button 22 is released, the pressurization inside the container stops, and the dispensing of the liquid contents also stops. By repeatedly pressing and releasing the push button 22, the liquid contents can be dispensed drop by drop. When the pressure on the push button 22 is released, the return of the push button 22 creates negative pressure inside the container, drawing the liquid contents inward from inside the dispensing cylinder 10 and the cylinder 21. As a result, any liquid contents adhering to the tip of the dispensing cylinder 10 are also drawn into the dispensing cylinder 10 and the cylinder 21. When the push button 22 returns to its original position and the negative pressure is released, the liquid contents are once again contained within the cylinder 21 and the dispensing cylinder 10, preventing any liquid contents from dripping out from the tip of the dispensing cylinder 10. Furthermore, the less deformable concave arc inclined wall 25 of the push button body 22 acts as a fulcrum, restoring the deformed convex arc inclined wall 26 of the push button body 22, thus stabilizing the elastic deformation.

[0031] In this embodiment, the hinge cap A is formed of an elastic resin L that allows for elastic deformation of the push button body 22. Compared to conventional designs where the same resin is formed in a thin layer and deformed by pressing, it is easier to deform by pressing, allowing for a weaker pressing force. Furthermore, because it is formed in a crescent-shaped dome when viewed from above, the pressing force can be stabilized, and the restoring force is also stable, so it does not fail to return to its original shape after being pressed.

[0032] In this embodiment, the hinge cap A uses an elastically deformable elastic resin L for a specific portion and a basic resin H for the remaining main portion, allowing the two resins to be integrally molded. This eliminates the need to mold them separately and then assemble them, and prevents them from coming apart after assembly, resulting in high productivity. Furthermore, the feel of the push button body 22 of the button portion C made of the integrally molded elastic resin L is good, as is the stability of the elastic deformation. moreover, Basic resin H In the sealed cylinder 32 of the top lid A2, Basic resin H The inner circumference of the dispensing cylinder 10 and the inner circumference of the elastic resin L cylinder 21 are sealed by two types of sealing parts with different hardness levels. Due to the difference in hardness and its balance, the seal is further enhanced, and leakage can be reliably prevented.

[0033] The dispensing cap in this embodiment consists of a main body B and a button C made of different materials, and is a hinged cap A integrally molded from a cap body A1 that is attached to the container body D and an upper lid A2 that is connected to the cap body A1 via a hinge A3. However, the cap body A1 and the upper lid A2 may be molded separately and fitted together with an undercut, or each may be fitted with a screw to close the cap by screwing them together. In this embodiment, the dispensing tube 10 is erected at one side of the cap body A1, and the push button 22 is placed on the opposite side. However, the dispensing tube 10 may be erected in the center of the cap body A1, and the push button 22 may be placed at one side of the cap body A1. If the cap body A1, which consists of a main body B and a button C made of different materials, can be integrally molded, the overall configuration of the cap, and the arrangement of the dispensing cylinder 10 and the push button body 22, are not limited to the configuration of this embodiment. [Industrial applicability]

[0034] The dispensing cap of the present invention is made by forming the main body and button portion of the cap body from resins of different hardnesses, so that when the lid is closed, the dispensing tube and the sealing tube are securely sealed and liquid leakage is prevented. Therefore, it is suitable as a cap for containers that require a hygienic usage environment, such as containers for liquid foods such as chili oil that are dispensed in small amounts, or containers for liquid pharmaceuticals such as mouthwash. [Explanation of Symbols]

[0035] A Hinge Cap A1 Cap Body A2 top lid A3 Hinge B Main body C button section D Container body H Basic resin L Elastic resin a. First seal section b. Second seal section α, β inner diameter γ space 1 Mouth 2 Engagement protrusion 5 Outer cylindrical wall 6 Upper wall 7 Inner cylinder wall 8 Bulkhead 9 Pour opening 10 Pour tube 11 Button opening 11a Concave arc 11b Convex arc 15. Fitting part 16 Engagement stepped portion 17 Finger rest recess 18 Lid engagement part 19 Inner step 20 Bulkhead 20a hole 21 Cylinder 22 Push button body 25 Concave arc inclined wall 26 Convex Arc Inclined Wall 27. Ceiling Wall 30 Top Wall 31 Outer wall 32 Closed Envelope 33 Recess 35. Thumb part 36 Engaging part 37 Engagement wall part 38 grooves 40 Upper cylinder part 41 Lower cylinder part

Claims

1. A dispensing cap comprising a cap body that is attached to the container body and an upper lid that can open and close the cap body, The cap body is attached to the mouth of the container body and has a main body made of basic resin and a button part integrally formed inside the main body of elastic resin that is elastically deformable. The main body has a dispensing opening that penetrates the main body and a dispensing cylinder that is erected around the dispensing opening. The button section has a cylindrical body formed on the inner circumference of the dispensing opening and a push button body that penetrates the main body through the cylindrical body and protrudes upward. The top lid is made of basic resin and has a top wall and a sealing cylinder that hangs down from the top wall and is inserted into the dispensing cylinder. The sealing cylinder is characterized by having an upper cylinder portion whose lower outer circumference is inserted into the inner circumference of the dispensing cylinder to form a first seal portion when the lid is closed, and a lower cylinder portion which is suspended from the inner circumference side of the lower end of the upper cylinder portion and whose lower outer circumference is inserted into the inner circumference of the cylindrical body of the button portion to form a second seal portion.

2. The main body has a crescent-shaped button opening adjacent to the dispensing cylinder, through which the button part passes. The dispensing cap according to claim 1, characterized in that the push button body has a concave arc-shaped inclined wall formed on the dispensing cylinder side, a convex arc-shaped inclined wall formed on the opposite side of the dispensing cylinder, and a top wall that closes the inner upper end of the concave arc-shaped inclined wall and the convex arc-shaped inclined wall.

3. The dispensing cap according to claim 1 or 2, characterized in that the button portion is integrally molded with the main body portion by two-color molding.

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