Cap

Abstract

To provide a cap with which a moveable valve can move stably toward a closed position to stably suck back the content of a pour-out cylinder.SOLUTION: A cap 10 includes a cap body 11 attached to the mouth portion 91 of a container 90 and an inner plug 15 arranged between the container 90 and the cap body 11.The cap body 11 has a pouring tube 21 for pouring out a content liquid L of the container 90. The inner plug 15 has a cylindrical body 30 that communicates the inside of the pouring tube 21 with the inside of the container 90, a moving valve body 35 that moves inside the cylindrical body 30 and an elastic restricting member 40 that restricts the moveable valve body 35 from coming out of the cylindrical body 30.The cylindrical body 30 has a space formed between the cylindrical body 30 and the movable valve body 35 that moves toward the pouring tube 21 side, and is sealed by the movable valve body 35 that moves toward the container 90 side. The elastic restricting member 40 presses with elastic force the movable valve body 35 that moves toward the pouring tube 21 side toward the container 90 side.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cap that is attached to a container. [Background technology]

[0002] To preserve liquids such as soy sauce that deteriorate easily when exposed to air, caps with valves are used as lids for containers that enclose the liquid. The valve of the cap opens when the liquid is to be poured out of the container, and is otherwise closed to prevent outside air from entering the container.

[0003] As an example of such a cap, Patent Document 1 discloses a cap having an inner tube that connects the inside of a dispensing tube for dispensing the content liquid with the inside of a container, and a movable valve disposed inside the inner tube. The cap disclosed in Figure 3 of Patent Document 1 is equipped with a movable valve that can move between a lower opening and an upper opening inside the inner tube.

[0004] When the valve is closed to prevent outside air from entering the container, i.e., in the closed valve state, the movable valve is positioned at the bottom opening. To dispense the contents outside the container, the movable valve is moved toward the top opening. The movable valve is moved by a user who wants to dispense the contents from the container gripping the elastic container, causing the contents to press the movable valve. This creates a space between the movable valve and the internal cylinder through which the contents can pass, opening the valve, i.e., in the open valve state, allowing the contents to be dispensed outside the container. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2018-140830 Summary of the Invention [Problem to be solved by the invention]

[0006] In such a cap, when the valve transitions from an open state to a closed state, the movable valve moves from the upper opening of the internal tube toward the lower opening. As a result, a space is created between the movable valve and the dispensing tube inside the internal tube, and the liquid inside the dispensing tube is sucked back toward this space. However, there are cases where the movable valve does not move stably toward the lower opening, resulting in insufficient sucking back of the liquid. In this case, the liquid that is not sucked back remains inside the dispensing tube, causing the problem of the liquid splashing outside the container, etc.

[0007] Therefore, an object of the present invention is to provide a cap in which the movable valve can be stably moved toward the closed valve position in order to stably suck back the content liquid inside the dispensing cylinder. [Means for solving the problem]

[0008] In order to solve the above problems, the cap of the present invention comprises a cap body that is attached to the mouth of a container, and an inner stopper that is placed between the container and the cap body, the cap body having a dispensing tube that pours out the contents of the container, and the inner stopper having a cylindrical body that connects the inside of the dispensing tube with the inside of the container, a movable valve body that moves between the dispensing tube side and the container side inside the cylindrical body, and an elastic regulating member that regulates the moving valve body that has moved to the dispensing tube side from escaping from the cylindrical body, and the cylindrical body is mainly characterized in that a space is formed between the movable valve body that has moved to the dispensing tube side and the movable valve body that has moved to the container side, and the elastic regulating member presses the moving valve body that has moved to the dispensing tube side toward the container by elastic force.

[0009] With this configuration, when the moving valve element moves toward the container inside the cylindrical body, a pressing force toward the container due to the elastic force of the elastic regulating member is applied to the moving valve element.

[0010] In the cap of the present invention, it is preferable that the interior of the cylindrical body is coaxial with the interior of the pouring cylinder.

[0011] If the interior of the cylindrical body and the interior of the dispensing tube are not coaxial, the amount of liquid temporarily stored inside the cap between the time the valve opens and the time the liquid is dispensed from the dispensing tube will differ depending on the orientation of the container when the liquid is dispensed. Therefore, when comparing the dispensing of liquid in different container orientations, there will be a difference in the pouring feel at the start of dispensing. However, if the interior of the cylindrical body is positioned coaxially with the interior of the dispensing tube, there will be no difference in the amount of liquid temporarily stored due to the different container orientations, and therefore there will be no difference in the pouring feel at the start of dispensing.

[0012] In the cap of the present invention, it is preferable that the elastic regulating member has a communication port that communicates the interior of the pouring cylinder with the interior of the cylindrical body.

[0013] With this configuration, the liquid content passes through the communication port and is poured out.

[0014] In the cap of the present invention, the elastic regulating member preferably has an elastic inclined portion that protrudes toward the container side as it approaches the center.

[0015] The elastic force of the elastic regulating member is determined by the amount of deformation of the elastic regulating member that occurs when the elastic regulating member regulates the moving valve body. Since the degree of inclination of the elastic inclined portion is one of the factors that determine the amount of deformation of the elastic regulating member, with this configuration, the elastic force of the elastic regulating member is determined by the degree of inclination of the elastic inclined portion.

[0016] In the cap of the present invention, it is preferable that the elastic inclined portion has an abutment portion on the container side that abuts against the moving valve body, and the abutment portion restricts the movement of the moving valve body.

[0017] With this configuration, the contact portion restricts the movement of the movable valve element.

[0018] In the cap of the present invention, it is preferable that the movable valve body is a spherical valve body, the inner plug has a guide portion that guides the movement of the movable valve body toward the dispensing tube, and the guide portion protrudes from the inner surface of the cylindrical body.

[0019] With this configuration, the movable valve element is guided by the guide portion, and the liquid content passes through the gap between the guide portion and the movable valve element.

[0020] The cap of the present invention preferably has a cylindrical body having a side wall portion and a cylindrical bottom portion connected to the side wall portion on the container side and having an opening, and the movable valve body is arranged inside the side wall portion of the cylindrical bottom portion and has a stopper portion with a larger diameter than the opening of the cylindrical bottom portion that restricts movement through the opening toward the container side, and a pillar portion that passes through the opening of the cylindrical bottom portion.

[0021] With this configuration, the retaining portion of the movable valve element has a diameter larger than the opening of the cylindrical bottom portion, so the movable valve element will not come out from inside the cylindrical body into the container. In addition, the opening of the cylindrical body allows the pillar portion to guide the movement of the movable valve element.

[0022] In the cap of the present invention, it is preferable that the column portion has a protrusion that extends in the axial direction of the column portion and protrudes from the side surface of the column portion, and that the column protrusions are arranged in multiple numbers around the column portion with gaps between them.

[0023] With this configuration, the opening of the cylindrical body guides the moving valve body using the column protrusions, and the content liquid passes through the gap between the opening and the moving valve body formed between the column protrusions.

[0024] It is preferable that the cap of the present invention has a tube bottom having a tube bottom side annular protrusion that protrudes toward the dispensing tube at the edge of its opening, and a retaining portion having a retaining portion side annular protrusion that protrudes toward the container at its outer edge, and that the tube bottom side annular protrusion forms a liquid-sealed space sealed with the liquid contents of the container between itself and the retaining portion side annular protrusion of the movable valve that has moved toward the container.

[0025] With this configuration, the cylindrical body is sealed by the liquid-sealed space. [Effects of the Invention]

[0026] According to the cap of the present invention, the movable valve element, when pressed toward the container by the elastic regulating member, can stably move toward the valve closed position, thereby enabling the liquid content inside the dispensing cylinder to be stably sucked back. [Brief explanation of the drawings]

[0027] [Figure 1] 1 is a cross-sectional view of a cap according to a first embodiment of the present invention. [Figure 2] 1A and 1B are diagrams illustrating a cylindrical body for a spherical valve according to a first embodiment of the present invention, in which (a) is a cross-sectional view and (b) is a view taken along the line AA. [Figure 3] 1 is an enlarged view of an inside plug for a spherical valve in an open state in a first embodiment of the present invention. FIG. [Figure 4] 1 is an enlarged view of a spherical valve inner plug portion in a closed state in a first embodiment of the present invention. FIG. [Figure 5] FIG. 4 is a cross-sectional view of a cap according to a second embodiment of the present invention. [Figure 6] 10A and 10B are diagrams showing a moving valve element for a T-valve according to a second embodiment of the present invention, in which (a) is a cross-sectional view and (b) is a view taken along the arrow BB. [Figure 7] FIG. 10 is an enlarged view of the inside plug portion for a T-valve in an open state in a second embodiment of the present invention. [Figure 8] FIG. 10 is an enlarged view of the inside plug portion for a T-valve in a closed state in a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0028] Two embodiments of the present invention will be described with reference to Figs. 1 to 8. Note that "upper" and "lower" in this specification refer to the orientations when the container 90 is positioned downward relative to the cap 10, as shown in Fig. 1. The direction perpendicular to the "upper" and "lower" directions is referred to as the "horizontal" direction.

[0029] First, a first embodiment of the present invention will be described with reference to Figures 1 to 4. As shown in Figure 1, a cap 10 according to the embodiment of the present invention is attached to a mouth 91 of a container 90 for holding a liquid content L, such as soy sauce, to cover the mouth 91.

[0030] The container 90 is a double-structure container in which an inner container 93, into which a content liquid L is placed, is enclosed within an outer container 92. The mouth 91 is composed of an outer container mouth 92a and an inner container mouth 93a that is disposed inside the outer container mouth 92a with a gap therebetween. An outer container screw-fitting portion 92b is formed on the outer surface of the outer container mouth 92a. When the container 90 is pressed with the mouth 91 covered, i.e., when the outer container 92 is pressed, the inner container 93 also deforms in the direction of the pressure on the outer container 92. At first glance, there appears to be an internal / external pressure adjustment space P between the outer container 92 and the inner container 93, and deformation of the outer container 92 is not directly transmitted to the inner container 93. However, since the mouth portion 91 is covered, when the outer container 92 is pressed, the air inside the internal / external pressure adjustment space P cannot flow out, and as the outer container 92 deforms, the air in the internal / external pressure adjustment space P pressurized by the outer container 92 deforms the inner container 93 in the pressing direction.

[0031] The cap 10 is composed of a cap body 11 attached to the mouth 91 of a container 90, and a spherical valve stopper 15 (an example of an "inner stopper") attached to the cap body 11. A top lid 13 is integrally molded with the cap body 11 via a deformable hinge 12. The cap body 11, hinge 12, and top lid 13 are formed by injection molding of a synthetic resin or the like. When the cap 10 is attached to the container 90, the hinge 12 can be deformed to position the top lid 13 in a position that covers the dispensing tube 21 formed on the cap body 11. By positioning the top lid 13 in this manner, the container 90 is in a closed state.

[0032] The cap body 11 is composed of a dispensing tube 21 that dispenses the content liquid L of the container 90, a top surface portion 22 that spreads outward in the radial direction from the lower end of the dispensing tube 21, an air intake port 22a that protrudes upward from the top surface portion 22 at a position different from the dispensing tube 21, and a cap body outer tubular portion 23 that extends cylindrically downward from the outer periphery of the top surface portion 22 and screws into the mouth portion 91 of the container 90. An outer tubular portion screw-on portion 23b that screws into the outer container screw-on portion 92b is formed on the inner surface 23a of the outer tubular portion of the cap body outer tubular portion 23.

[0033] The spherical valve stopper 15 is composed of a spherical valve cylindrical body 30 (an example of a "cylindrical body") that connects the inside of the dispensing tube 21 with the inside of the container 90, a spherical valve 35 (an example of a "moving valve body") that is placed inside the spherical valve cylindrical body 30, and an elastic regulating member 40 that is attached to the opening of the spherical valve cylindrical body 30.

[0034] As shown in FIG. 2, the spherical valve cylindrical body 30 comprises a spherical valve cylindrical portion 31 and a support portion 33 extending radially outward from the outer periphery of the spherical valve cylindrical portion 31. The spherical valve cylindrical portion 31 comprises a cylindrical straight portion 31a having a constant inner diameter in the axial direction, an expanded-diameter portion 31b formed continuously at one end of the straight portion 31a and having a continuously expanding inner diameter, and a reduced-diameter portion 31c formed continuously at the other end of the straight portion 31a and having a continuously decreasing inner diameter. An upper opening 31d facing the axial direction is formed in the expanded-diameter portion 31b, and a lower opening 31e facing the axial direction is formed in the reduced-diameter portion 31c. An annular elastic restricting member fitting portion 33a is provided on the upper surface of the support portion 33 on the side of the upper opening 31d. An air valve notch 33b is formed at a position radially outward of the elastic restricting member fitting portion 33a, cutting out from the lower surface, which is the surface facing the lower opening 31e, to the upper surface. The spherical valve cylindrical body 30 is made by injection molding using synthetic resin or the like.

[0035] As shown in FIG. 1 , the spherical valve cylinder 30 is disposed inside the cap body 11 so that the outer periphery of the support portion 33 faces the inner surface 23a of the outer periphery of the cap body 11 and the upper surface of the support portion 33 abuts against the inner surface of the cap body 11. Furthermore, the interior of the spherical valve cylinder 31 (an example of the "interior of the cylinder") is preferably disposed coaxially with the interior of the dispensing tube 21. If the interior of the spherical valve cylinder 31 and the interior of the dispensing tube 21 are not coaxially aligned, the amount of content liquid L temporarily stored inside the cap body 11 between the valve opening and dispensing from the dispensing tube 21 will vary depending on the orientation of the container 90 when the content liquid L is dispensed. Therefore, comparing the dispensing of the content liquid L from the container 90 in different orientations will result in a difference in the feeling of dispensing at the start of dispensing. However, if the interior of the spherical valve cylindrical portion 31 is aligned coaxially with the interior of the dispensing tube 21, there will be no difference in the amount of content liquid L temporarily stored due to differences in the attitude of the container 90, and therefore no difference in the pouring feel at the start of pouring. For this reason, it is preferable that the spherical valve cylindrical portion 31 be formed with a support portion 33 so that the interior of the spherical valve cylindrical portion 31 and the interior of the dispensing tube 21 are aligned coaxially when the spherical valve cylindrical body 30 is placed in the cap body 11.

[0036] As shown in FIG. 2 , the guide portion 32 that guides the axial movement of the spherical valve tubular portion 31 of the spherical valve 35 preferably protrudes from the inner surface of the enlarged diameter portion 31b (an example of the “inner surface of the tubular body”), and the guide portion 32 is preferably disposed along the axial direction of the spherical valve tubular portion 31. On the other hand, the provision of the guide portion 32 reduces the horizontal cross-sectional area of ​​the space through which the content liquid L passes. To reduce this reduction in cross-sectional area, it is preferable to provide multiple guide portions 32 spaced apart by gaps around the circumferential direction of the spherical valve tubular portion 31. This allows the guide portions 32 to guide the movement of the spherical valve 35 in the axial direction of the spherical valve tubular portion 31, and allows the content liquid L to pass through the gaps between the guide portions 32. In other words, the provision of the guide portion 32 reduces the reduction in the horizontal cross-sectional area of ​​the space through which the content liquid L passes, thereby reducing the reduction in the amount of the content liquid L dispensed due to the provision of the guide portion 32.

[0037] As shown in Figures 1, 3, and 4, the spherical valve 35 has an outer diameter that is equal to or smaller than the inner diameter of the straight portion 31a of the spherical valve cylindrical portion 31 and exceeds the inner diameter of the lower opening 31e, and is formed by injection molding of synthetic resin or the like.

[0038] The elastic restricting member 40 is a member that restricts the movement of the spherical valve 35 arranged inside the spherical valve cylindrical portion 31. The elastic restricting member 40 is composed of a membrane-like restricting portion 41, an elastic restricting member mounting portion 42 that extends cylindrically downward from the outer periphery of the restricting portion 41, and an air valve 43 that extends radially outward from a portion of the outer edge of the elastic restricting member mounting portion 42. The air valve 43 can deform in the vertical direction from its base. The elastic restricting member 40 is molded from a material that is softer than the spherical valve 35 and that is elastically deformable.

[0039] The restricting portion 41 is a portion that restricts the movement of the spherical valve 35, and is disposed so as to cover the upper opening 31d. On the other hand, when the upper opening 31d is covered by the restricting portion 41, the content liquid L cannot pass through the upper opening 31d. Therefore, in order to allow the content liquid L to pass through the upper opening 31d, it is preferable that a communication port 41b that communicates between the inside of the dispensing tube 21 and the inside of the spherical valve cylindrical body 30 is formed on the outer edge of the restricting portion 41.

[0040] The restricting portion 41 is preferably formed with an elastic inclined portion 41a that protrudes downward, toward the container 90, as it approaches the center. In this way, when comparing a case in which the restricting portion 41 has an elastic inclined portion 41a that inclines downward with a case in which the elastic inclined portion 41a is not formed, the amount of deformation of the elastic restricting member 40 when the restricting portion 41 is pressed upward is greater in the former. In other words, when the elastic restricting member 40 is pressed, the elastic force generated in the elastic restricting member 40 is greater.

[0041] The elastic restricting member 40 preferably has a valve element contact portion 41c (an example of an "contact portion") that is an annular protrusion formed on the underside of the restricting portion 41, which faces the container 90. In this way, the valve element contact portion 41c comes into contact with and fits into a part of the spherical valve 35, restricting horizontal movement of the spherical valve 35.

[0042] The arrangement of the spherical valve 35, elastic restricting member 40, and spherical valve cylindrical body 30 relative to the spherical valve inner plug 15, and the arrangement of the spherical valve inner plug 15 relative to the cap body 11 will be described with reference to FIG.

[0043] The arrangement of the spherical valve 35, the elastic regulating member 40, and the spherical valve cylindrical body 30 relative to the spherical valve inner plug 15 will be described. The spherical valve 35 is arranged inside the spherical valve cylindrical portion 31 of the spherical valve cylindrical body 30. The elastic regulating member 40 is arranged in the spherical valve cylindrical body 30 so that, with the elastic regulating member mounting portion 42 fitted into the elastic regulating member fitting portion 33a, the air valve notch 33b and the air valve 43 overlap in the axial direction of the spherical valve cylindrical portion 31. When the elastic regulating member 40 is arranged in the spherical valve cylindrical body 30 in this manner, the restricting portion 41 is arranged to cover the upper opening 31d.

[0044] The spherical valve inside plug 15 is arranged so that the outer periphery of the support part 33 faces the inner surface 23a of the outer circumferential cylindrical part and so that the cap body 11 and the upper surface of the support part 33 abut against each other. The spherical valve inside plug 15 is arranged in the cap body 11 with the air valve 43 covering the air intake port 22a. When the spherical valve inside plug 15 is arranged in the cap body 11 in this way, the interior of the spherical valve cylindrical part 31 and the interior of the dispensing tube 21 are aligned coaxially.

[0045] The cap body 11, in which the spherical valve inner plug 15 is disposed, is arranged to cover the opening 91 of the container 90. The cap body 11 is arranged in the opening 91 of the container 90 by threading the outer peripheral cylindrical portion threading portion 23b into the outer container threading portion 92b. By arranging the cap body 11 in the container 90 in this manner, the interior of the inner container 93 is connected to the interior of the spherical valve cylindrical body 30, and the interior of the inner container 93 is connected to the interior of the dispensing tube 21. Furthermore, the air valve 43 deforms downward at its base, connecting the air intake port 22a of the cap body 11 to the internal and external pressure adjustment space P.

[0046] The operation of the valve when the cap 10 transitions from an open state to a closed state will be described with reference to FIGS.

[0047] An enlarged view of the spherical valve inner plug 15 and its surroundings in the open state is shown in Figure 3. For example, when the outer container 92 is pressed from the outside to pressurize the internal / external pressure adjustment space P, the pressure inside the inner container 93 increases, and the content liquid L presses the spherical valve 35 toward the dispensing tube 21, moving the spherical valve 35 toward the dispensing tube 21 inside the spherical valve cylindrical body 30. When the spherical valve 35 reaches the enlarged diameter portion 31b, a liquid passage LP through which the content liquid L can pass is created between the spherical valve 35 and the spherical valve cylindrical portion 31, and the valve is opened. After this, the elastic restricting member 40 is pressed by the spherical valve 35 and deforms toward the dispensing tube 21, restricting the movement of the spherical valve 35. The state in which a liquid passage LP is formed between the spherical valve 35 and the spherical valve cylindrical portion 31 is the open valve state. Figure 3 shows the open valve state in which the spherical valve 35 is restricted by the elastic restricting member 40.

[0048] FIG. 4 shows an enlarged view of the spherical valve stopper 15 and its surroundings in the closed state. When pressure on the outer container 92 is released, the pressurization of the internal / external pressure adjustment space P is released, and the pressure inside the inner container 93 drops. Because a portion of the content liquid L inside the inner container 93 has been dispensed, the pressure inside the inner container 93 becomes lower than atmospheric pressure. A pressure difference is generated between the inside and outside of the inner container 93, causing the spherical valve 35 to move downward inside the spherical valve cylinder 30, and the cap 10 transitions from the open state to the closed state. At this time, the spherical valve 35, which was restrained by the deformation of the elastic restraining member 40, is subjected to a downward force due to the pressure difference between the inside and outside of the inner container 93, as well as a downward force due to the elastic force generated by the elastic restraining member 40. This allows the spherical valve 35 to move steadily downward. When the spherical valve 35 moves downward, a suck-back space LS is created upward relative to the spherical valve 35 inside the spherical valve cylinder 30. The suck-back space LS created by the movement of the spherical valve 35 temporarily has a lower pressure than the surrounding space, so the liquid L remaining inside the dispensing tube 21 is sucked back into the suck-back space LS. Because the spherical valve 35 moves downward stably in this way, the cap 10 can stably suck back the liquid L remaining inside the dispensing tube 21 into the suck-back space LS.

[0049] The spherical valve 35 moves until it seats on the reduced diameter portion 31c. Note that the closed valve state is a state in which there is no liquid passage LP between the spherical valve 35 and the spherical valve cylindrical portion 31, and Figure 4 shows the closed valve state in which the spherical valve 35 seats on the reduced diameter portion 31c. In addition, in the embodiment of the present invention, the closed valve state also includes a state in which the spherical valve 35 is moving on the straight portion 31a.

[0050] Next, a second embodiment of the present invention will be described with reference to FIGS. 5 to 8. In the first embodiment, a spherical valve 35 (a spherical valve body) was described as an example of a moving valve body, but in the second embodiment, a valve having a retaining portion and a column portion will be described. The second embodiment of the present invention is composed of a cap body 11 and a T-valve plug 16. The basic configuration of the T-valve plug 16 is the same as that of the spherical valve plug 15 of the first embodiment of the present invention. It differs from the spherical valve plug 15 in that the spherical valve cylindrical body 30 is replaced by a T-valve cylindrical body 50 (an example of a "cylindrical body") having a different shape, and the spherical valve 35 is replaced by a T-valve 60 (an example of a "moving valve body") having a different shape. Despite these differences, the second embodiment of the present invention performs the same valve opening and closing operations as the first embodiment of the present invention.

[0051] As shown in FIG. 5, the T-valve cylindrical body 50 is composed of a T-valve cylindrical portion 51 and a support portion 52 that extends radially outward from the outer periphery of the T-valve cylindrical portion 51. The T-valve cylindrical portion 51 is composed of a side wall portion 51a, which is its inner surface, and a cylindrical bottom portion 51b that is connected to the side wall portion 51a on the container 90 side. A lower opening 51c is formed in the cylindrical bottom portion 51b toward the axial direction of the T-valve cylindrical portion 51. The other configuration is the same as that of the spherical valve cylindrical body 30. The T-valve cylindrical body 50 is attached to the cap body 11 so that the lower opening 51c faces the container 90 side relative to the support portion 52.

[0052] As shown in Figure 6, the T-valve 60 is disposed inside the side wall portion 51a. The disc-shaped retaining portion 61 has a diameter larger than the lower opening 51c and prevents the T-valve 60 from moving through the lower opening 51c toward the container 90. The retaining portion 61 also includes a cylindrical pillar portion 62 that extends axially from one of the two opposing surfaces of the retaining portion 61 and passes through the lower opening 51c. With this configuration, the T-valve 60 can move axially along the inner surface of the T-valve tubular portion 51. Furthermore, because the pillar portion 62 passes through the lower opening 51c, when the T-valve 60 moves axially of the T-valve tubular portion 51, the lower opening 51c guides the pillar portion 62, thereby reducing radial movement of the T-valve 60 through the T-valve tubular portion 51.

[0053] On the other hand, when the column portion 62 is passed through the lower opening 51c, the horizontal cross-sectional area of ​​the liquid passage LP at the lower opening 51c becomes smaller, and the amount of liquid L dispensed decreases compared to when a moving valve element without the column portion 62 is used. To reduce the decrease in the amount of liquid L dispensed, the column portion 62 preferably has column protrusions 62a extending axially of the column portion 62 while protruding from the side surface, and multiple column protrusions 62a are preferably arranged circumferentially of the column portion 62 with gaps between them. Furthermore, the column protrusions 62a are preferably longer than the axial length of the lower opening 51c and preferably extend from the upper end to the lower end of the column portion 62. By having the column protrusions 62a on the column portion 62, the T-valve 60 is guided by the outer diameter of the column protrusions 62a and the inner diameter of the lower opening 51c when the T-valve 60 moves axially of the T-valve tubular portion 51. Therefore, as long as the outer diameter of the pillar protrusion 62a is matched to the inner diameter of the lower opening 51c, it is possible to reduce the cross-sectional area of ​​the pillar 62. As a result, the liquid passage LP formed between the lower opening 51c and the pillar 62 is larger than when the pillar protrusion 62a is not formed, and it is possible to reduce the decrease in the amount of content liquid L dispensed due to the provision of the pillar 62.

[0054] As shown in Fig. 7, the T-valve cylindrical body 50 preferably has a cylinder bottom 51b with a cylinder bottom-side annular protrusion 53 that protrudes toward the dispensing cylinder 21 at the edge of the lower opening 51c, and the T-valve 60 preferably has a retaining portion 61 with a retaining portion-side annular protrusion 63 that protrudes toward the container 90 at its outer edge. With this configuration, as shown in Fig. 8, when the T-valve 60 is seated on the cylinder bottom 51b, a liquid seal space S is formed between the surface of the retaining portion-side annular protrusion 63 and the surface of the cylinder bottom-side annular protrusion 53 that faces the retaining portion-side annular protrusion 63. As shown in Fig. 6, the liquid seal space S is filled with the content liquid L, thereby sealing the T-valve cylindrical body 50.

[0055] The above describes an embodiment of the present invention, but the forms to which the present invention can be applied are not limited to the above-mentioned embodiment, and appropriate modifications can be made within the scope of the intent of the present invention, which is that when the movement of the moving valve body is restricted by the elastic regulating member, the elastic regulating member undergoes elastic deformation to restrict the movement of the moving valve body.

[0056] In the embodiment of the present invention, a double-structure container is exemplified as the container 90 to which the cap 10 is attached, but the container does not have to have a double structure as long as it does not deviate from the spirit of the present invention.

[0057] When the T-valve 60 is seated in the T-valve cylindrical body 50 of the embodiment of the present invention shown in Figure 6, the side surface of the retaining portion-side annular protrusion 63 faces the side surface of the cylinder bottom-side annular protrusion 53 across a gap, and a liquid-sealed space S is formed in the space between them. However, appropriate modifications can be made within the scope of the present invention, which is to form the liquid-sealed space S between the surface of the retaining portion-side annular protrusion 63 and the opposing surface of the cylinder bottom-side annular protrusion 53. [Explanation of symbols]

[0058] 10 Caps 11 Cap body 15. Inner plug for spherical valve 16 T-valve plug 21 Pour tube 30 Cylindrical body for spherical valve 31d upper opening 31e Lower opening 32 Information Department 35 Spherical valve 40 Elasticity control member 41 Regulatory Department 41a Elastic inclined portion 41b Communication port 41c Valve body contact part 50 Cylindrical body for T-shaped valve 51c lower opening 53 Annular protrusion on bottom of cylinder 60 T-valve 61 Retaining part 62 Column section 62a Column projection 63 Annular protrusion on retaining part side 90 containers 91 Mouth L Content liquid S liquid seal space

Claims

1. a cap body that is attached to the mouth of the container; an inner plug disposed between the container and the cap body; The cap body has a pouring tube for pouring out the liquid content of the container, The inner plug, A cylindrical body that communicates the inside of the pouring cylinder with the inside of a container; a movable valve body that moves between a pouring tube side and a container side inside the cylindrical body; an elastic restricting member that restricts the movable valve body that has moved to the pouring tube side from coming out of the cylindrical body, a space is formed between the cylindrical body and the movable valve body that has moved to the dispensing cylinder side, and the cylindrical body is sealed by the movable valve body that has moved to the container side; The cap is characterized in that the elastic regulating member presses the movable valve body, which has moved to the pouring tube side, toward the container side by elastic force.

2. 2. The cap according to claim 1, wherein the interior of the cylindrical body is coaxial with the interior of the pouring cylinder.

3. 3. The cap according to claim 1, wherein the elastic regulating member has a communication port that communicates the interior of the pouring tube with the interior of the cylindrical body.

4. 4. The cap according to claim 1, wherein the elastic regulating member has an elastic inclined portion that protrudes toward the container as it approaches the center.

5. The elastic inclined portion has a contact portion with the moving valve body on the container side, The cap according to claim 4, wherein the contact portion restricts movement of the movable valve element.

6. The moving valve element is a spherical valve element, the inner plug has a guide portion that guides the movement of the movable valve body toward the pouring tube side, 6. The cap according to claim 1, wherein the guide portion protrudes from the inner surface of the cylindrical body.

7. The cylindrical body is A side wall portion; a cylindrical bottom portion connected to the side wall portion on the container side and having an opening; The moving valve body a retaining portion that is disposed inside a side wall portion of the cylindrical bottom portion, has a diameter larger than the opening of the cylindrical bottom portion, and restricts movement of the retaining portion toward the container through the opening; The cap according to any one of claims 1 to 4, further comprising a pillar portion passing through the opening in the cylindrical bottom portion.

8. The pillar part, a protrusion extending in the axial direction of the column portion while protruding from a side surface of the column portion; The cap according to claim 7, wherein the columnar projections are arranged in a plurality at intervals in the circumferential direction of the columnar portion.

9. the cylinder bottom has a cylinder bottom side annular protrusion that protrudes toward the pouring cylinder at the edge of the opening, The retaining portion has a retaining portion-side annular protrusion that protrudes toward the container at its outer edge, A cap as described in claim 7 or 8, characterized in that the annular protrusion on the tube bottom side forms a liquid-sealed space sealed with the liquid contents of the container between the annular protrusion on the anti-slip portion side of the movable valve that has moved toward the container side.

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