Cap

Abstract

To provide a cap that can suppress disturbance of a flow of a content when squeezing a container to discharge the content from a discharging tube.SOLUTION: A cap body 10 mounted to a mouth part 3 of a container 2 has a top wall 19 that covers the mouth part 3. A discharging tube 11 protrudes from the top wall 19 toward the outside of the mouth part 3. The top wall 19 is provided with an introduction part 43 that introduces a content 4 of the container 2 from the inside of the mouth part 3 into the discharging tube 11. The introduction part 43 has: a cylindrical peripheral wall 44 with a closed bottom on the container 2 side; an introduction space 46 that is formed in the peripheral wall 44; an opening part 47 that is formed on a part of the peripheral wall 44; and a valve body 48 that opens and closes the opening part 47. The introduction space 46 and the inside of the discharging tube 11 communicate each other. The valve body 48 deforms inward against the peripheral wall 44 to open the opening part 47 and returns to its original shape to close the opening part 47.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] Conventionally, this type of cap has been known to have a cap body that is attached to the mouth of a container, a dispensing tube that dispenses the liquid contents of the container to the outside, and a lid that opens and closes the dispensing tube, as disclosed in the following patent document, for example.

[0003] The cap body has a top wall that covers the mouth. The dispensing tube protrudes from the top wall toward the outside of the mouth. A dispensing hole is formed inside the dispensing tube, penetrating the dispensing tube and communicating with the tip opening of the dispensing tube and the inside of the mouth of the container.

[0004] A baffle plate, which functions as a valve for opening and closing the spout hole, is provided inside the lower end of the spout hole via a hinge portion. The baffle plate closes the spout hole in a tilted closed position within the spout hole, and opens the spout hole by pivoting upward from the closed position around the hinge portion.

[0005] The thickness of the hinge portion is formed to be significantly thinner than the thickness of the baffle plate. Furthermore, when the baffle plate is in the closed position, the outer peripheral edge of the baffle plate contacts the inner peripheral surface of the pouring hole, and no gap is formed between the inner peripheral surface of the pouring hole and the outer peripheral edge of the baffle plate.

[0006] When the lid is opened and the container is squeezed, the baffle plate rotates upward from the closed position around the hinge, opening the pouring hole, and the liquid content in the container is poured from the mouth of the container through the pouring hole and out the tip of the pouring tube.

[0007] Furthermore, by releasing the pressure on the container and placing the container with the pouring tube facing upward, the baffle plate rotates downward around the hinge portion and returns to the closed position, closing the pouring hole. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Patent No. 7260435 Summary of the Invention [Problem to be solved by the invention]

[0009] However, in the above-mentioned conventional type, when the lid is opened and the container is squeezed to pour the contents of the container from the tip of the pouring tube, the contents of the container flow irregularly from around the lower opening of the pouring hole into the pouring hole, which may disrupt the flow of the contents.

[0010] Furthermore, when the cap is injection molded, the baffle plate is molded so that it hangs down from inside the pouring hole to the outside, and then a jig is used to push the baffle plate up and into the pouring hole, which results in the problem of laborious production of the cap.

[0011] Furthermore, after the liquid contents of the container have been poured out from the tip of the dispensing tube, the container is released from compression and the container is placed with the dispensing tube facing upwards. When the baffle plate returns to the closed position and closes the pouring hole, not all of the liquid contents in the pouring hole return to the container, and a considerable amount of the liquid contents remain in the pouring hole. This remaining liquid contents (such as soy sauce) dries and hardens, and when the baffle plate is in the closed position, it adheres to the inner surface of the pouring hole, which could cause the baffle plate to lose its opening and closing function.

[0012] Furthermore, since the baffle plate is provided inside the pouring hole, the size of the baffle plate is limited by the diameter of the pouring hole, or the shape of the baffle plate is limited by the shape of the pouring hole, resulting in a problem of low flexibility in designing the baffle plate.

[0013] The present invention aims to provide a cap that can suppress turbulence in the flow of contents when the container is squeezed to dispense the contents from a dispensing tube, and that can be easily manufactured. [Means for solving the problem]

[0014] In order to achieve the above object, the first invention provides a cap having a cap body attached to the mouth of a container, a pouring tube for pouring the contents of the container to the outside, and a lid for opening and closing the pouring tube, The cap body has a top wall that covers the mouth portion, The spout protrudes from the top wall toward the outside of the mouth. An introduction portion is provided on the top wall to introduce the contents of the container from the opening portion into the pouring tube, the introduction part has a cylindrical peripheral wall whose bottom on the container side is closed, an introduction space formed within the peripheral wall, an opening formed in a part of the peripheral wall, and a valve body that opens and closes the opening, The peripheral wall is provided so as to protrude from the top wall toward the container, The introduction space is in communication with the inside of the pouring cylinder, The valve body opens the opening by deforming inwardly of the peripheral wall, and closes the opening by returning to its original shape.

[0015] According to this, when the lid is opened and the container is squeezed to dispense the contents of the container from the dispensing tube, the valve body deforms inward on the peripheral wall, opening the opening, and the contents of the container flow through the opening in the peripheral wall into the introduction space within the peripheral wall, pass from the introduction space through the dispensing tube, and are dispensed from the opening at the tip of the dispensing tube.

[0016] When dispensing such contents, the contents do not flow directly from the container into the dispensing tube, but first flow into an introduction space surrounded by a peripheral wall, and then immediately flow from the introduction space into the dispensing tube, thereby preventing the flow of the contents from being disturbed as they flow into the dispensing tube.

[0017] The cap in the second aspect of the present invention has a gap formed between the peripheral wall and the closed valve body.

[0018] According to this, the lid is opened, the container is squeezed to dispense the contents of the container from the dispensing tube, and then the container is released from compression and placed with the dispensing tube facing upward, causing the valve body that had been deformed toward the inside of the peripheral wall to return to its original shape and close the opening.

[0019] At this time, the contents in the dispensing tube and the introduction space return to the container through the gap between the peripheral wall and the closed valve body, significantly reducing the amount of contents remaining in the dispensing tube and the introduction space. This prevents problems such as the contents (such as soy sauce) remaining in the introduction space drying and solidifying, causing the valve body to stick to the peripheral wall with the valve body closed, resulting in loss of opening and closing function.

[0020] In the cap of the third invention, the bottom of the peripheral wall is closed by a bottom wall, One end of the valve body is connected to the bottom wall, The other end of the valve body is swingable in the opening and closing directions.

[0021] With this, when the container is squeezed to dispense the contents of the container from the dispensing tube, the other end of the valve body swings in the opening direction, causing the valve body to deform inwardly toward the peripheral wall, thereby opening the opening.

[0022] In the cap according to the fourth aspect of the present invention, the valve body is flexible and opens the opening by flexing flexibly, with the amount of flexing increasing towards the other end.

[0023] As a result, when the valve body is opened, the amount of deflection is greater toward the other end and less toward the one end, which reduces the stress at the one end of the valve body, i.e., the portion where the valve body and the bottom wall are connected, making the one end of the valve body less likely to break.

[0024] In the cap of the fifth invention, the bottom of the peripheral wall is closed by a bottom wall, The other end of the valve body is connected to the top wall, One end of the valve body is swingable in the opening and closing directions.

[0025] With this, when the container is squeezed to dispense the contents of the container from the dispensing tube, one end of the valve body swings in the opening direction, causing the valve body to deform inwardly of the peripheral wall and opening the opening.

[0026] In the cap according to the sixth aspect of the present invention, the valve body is flexible and opens the opening by flexing flexibly, with the amount of flexing being greater towards one end.

[0027] As a result, when the valve body is opened, the deflection is greater toward one end and less toward the other end, which reduces the stress at the other end of the valve body, i.e., the portion where the valve body and the top wall are connected, making the other end of the valve body less likely to break.

[0028] In the cap of the seventh invention, the lid is connected to the cap body via a hinge, The opening of the lead-in part is located on the side opposite the hinge.

[0029] With this device, the lid is opened, the container is tilted with the hinge facing upward, and the container is squeezed to dispense the contents from the dispensing tube. At this time, the opening of the introduction part faces upward, so the contents in the container flow from top to bottom through the opening and into the introduction space in the peripheral wall. This allows the contents to flow smoothly from the opening into the introduction space.

[0030] In the cap according to the eighth aspect of the present invention, the introduction space and the inside of the pouring cylinder are continuous in the axial direction of the pouring cylinder.

[0031] This allows the contents that have flowed from the container into the introduction space to flow smoothly from the introduction space into the dispensing cylinder, thereby preventing the flow of the contents from becoming turbulent as they flow into the dispensing cylinder.

[0032] In the cap according to the ninth aspect of the present invention, the valve body is flat. In the cap according to the tenth aspect of the present invention, the valve body is curved in an arc shape when viewed from the axial direction of the dispensing cylinder.

[0033] This allows the valve body to have an appropriate rigidity, so that even if the container is tilted without being squeezed, the valve body can be prevented from accidentally deforming inward toward the peripheral wall due to its own weight, thereby opening the opening.

[0034] In the cap of the eleventh invention, the bottom of the peripheral wall is closed by a bottom wall, A curved surface is formed in a circular arc shape at a corner between the inner peripheral surface of the peripheral wall and the inner surface of the bottom wall, The curved surface faces the valve body in the radial direction of the peripheral wall.

[0035] According to this, the lid is opened, the container is squeezed to dispense the contents of the container from the dispensing tube, and then the container is released from compression and placed with the dispensing tube facing upward, causing the valve body that had been deformed toward the inside of the peripheral wall to return to its original shape and close the opening. At this time, the contents within the peripheral wall are guided by the curved surface and flow toward the valve body, so that they reliably and smoothly pass through the gap between the peripheral wall and the closed valve body and return to the container.

[0036] In the cap according to the twelfth aspect of the present invention, the valve body constitutes a part of the peripheral wall in the closed state. This eliminates the need to press the valve body into the dispensing cylinder when manufacturing the cap, making it easy to manufacture the cap. [Effects of the Invention]

[0037] As described above, according to the present invention, when the container is squeezed to dispense the contents from the dispensing tube, it is possible to suppress turbulence of the flow of the contents as they flow from the container into the dispensing tube. In addition, it is possible to easily manufacture the cap. [Brief explanation of the drawings]

[0038] [Figure 1] 1 is a longitudinal cross-sectional view of a cap according to a first embodiment of the present invention, showing the capped state. [Figure 2] FIG. 2 is a perspective view of the cap when opened. [Figure 3] FIG. [Figure 4] FIG. [Figure 5]FIG. 2 is a vertical cross-sectional view of the introduction portion of the cap according to the first embodiment. [Figure 6] FIG. [Figure 7] FIG. 6 is a view taken along the arrow XX in FIG. 5. [Figure 8] FIG. 10 is a longitudinal cross-sectional view of the cap of the same patent application, showing the state in which the cap is opened and the content liquid is poured out from the pouring tube. [Figure 9] FIG. 10 is a partially enlarged vertical cross-sectional view of a cap according to a second embodiment of the present invention. [Figure 10] 10 is a view taken along the arrow XX in FIG. 9. [Figure 11] FIG. [Figure 12] FIG. 10 is a vertical cross-sectional view of an introduction portion of a cap according to a third embodiment of the present invention. [Figure 13] FIG. 10 is a cross-sectional view of an introduction portion of a cap according to a fourth embodiment of the present invention. [Figure 14] FIG. 10 is a cross-sectional view of an introduction portion of a cap according to a fifth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0039] Hereinafter, embodiments of the present invention will be described with reference to the drawings. (First embodiment)

[0040] In the first embodiment, as shown in Figures 1 to 3, reference numeral 1 denotes a cap that is attached to a container 2 such as a plastic bottle. The cap 1 includes a cap body 10 that is attached to the mouth 3 of the container 2, a dispensing tube 11 that dispenses a liquid content 4 (an example of a content), such as soy sauce, contained in the container 2 to the outside, and a lid 12 that opens and closes the dispensing tube 11. Although the cap body 10 is directly attached to the mouth 3 of the container 2, it may be indirectly attached to the mouth 3 via an inner plug or the like.

[0041] In addition, the direction of the axis 14 passing through the center of the closed cap 1 is defined as the vertical direction 15, the direction perpendicular to the axis 14 is defined as the radial direction 16, and the circumferential direction centered on the axis 14 is defined as the circumferential direction 17.

[0042] The cap body 10 has a disk-shaped top wall 19 that covers the mouth portion 3, a cylindrical outer tube 20 that extends downward from the outer peripheral edge of the partition wall 19, and a cylindrical inner tube 21 that extends downward from the partition wall 19 inside the outer tube 20.

[0043] A groove 22, which is closed at the top by a top wall 19 and is open at the bottom, is formed around the entire circumference between the outer tube 20 and the inner tube 21. The cap body 4 is attached to the container 2 by fitting the mouth 3 of the container 2 into the groove 22 from below.

[0044] 1, 2, 6, and 8, a circular first fitting portion 24 is provided on the upper surface of the top wall 19. The first fitting portion 24 has a recessed portion 25 extending inward in the radial direction 16 around the entire periphery. The dispensing tube 11 is a cylindrical member that protrudes upward from the upper surface of the top wall 19 to the outside of the mouth portion 3 and is located inside the first fitting portion 24 in the radial direction 16 .

[0045] A horn-shaped, inclined expanded diameter portion 28 is formed at the tip opening 27 of the dispensing tube 11. As shown in Figures 5, 6 and 8, a dispensing flow path 30 communicating with the inside of the container 2 and the tip opening 27 is formed inside the dispensing tube 11.

[0046] 1 to 3 and 8, the lid 12 is connected to the cap body 10 via a hinge 33, and is rotatable about the hinge 33 in opening and closing directions 34 and 35 for opening and closing the dispensing cylinder 11. The lid 12 has a circular lid plate 37, a cylindrical skirt 38 provided on the outer periphery of the lid plate 37, and a cylindrical seal cylinder 39 provided inside the skirt 38.

[0047] 1, 2, and 8, a second fitting portion 41 that protrudes inward in the radial direction 16 is formed around the entire inner periphery of the skirt 38. As shown in FIG. 1, when the cap 1 is closed, the second fitting portion 41 of the lid 12 fits into the recessed portion 25 of the first fitting portion 24 of the cap body 10 to prevent the lid 12 from accidentally opening due to, for example, vibration.

[0048] 1, when the cap 1 is closed, the sealing tube 39 is inserted into the tip opening 27 of the dispensing tube 11 and comes into close contact with the inner circumferential surface of the dispensing flow path 30 over the entire circumference. This seals the gap between the dispensing tube 11 and the lid 12.

[0049] As shown in FIGS. 1 and 3 to 7, the bottom surface of the top wall 19 is provided with an introduction part 43 that introduces the content liquid 4 in the container 2 from the opening part 3 into the pouring flow path 30 in the pouring tube 11.

[0050] The introduction portion 43 has a cylindrical peripheral wall 44 that protrudes downward (i.e., toward the container 2) from the underside of the top wall 19 and enters the mouth portion 3, a circular bottom wall 45 that closes the bottom of the peripheral wall 44, an introduction space 46 formed within the peripheral wall 44, an opening 47 formed in part of the peripheral wall 44, and a flat valve body 48 that opens and closes the opening 47.

[0051] The introduction space 46 and the lower end opening of the pouring flow path 30 of the pouring cylinder 11 are in communication with each other, and the introduction space 46 and the pouring flow path 30 are continuous in the direction of the axis 52 of the pouring cylinder 11 . The opening 47 opens to the outside of the peripheral wall 44 and to the introduction space 46 inside the peripheral wall 44 , and is located on the side facing the hinge 33 in the radial direction 16 .

[0052] 5 and 6, the valve element 48 is flexible and flexes flexibly inward of the peripheral wall 44 as shown by the imaginary lines to open the opening 47, and returns to its original shape as shown by the solid lines to close the opening 47. A lower end 48a (an example of one end) of the valve element 48 is integrally connected to the bottom wall 45, and an upper end 48b (an example of the other end) of the valve element 48 can swing in opening and closing directions 50 and 51. The valve element 48 is configured so that the lower end 48a hardly flexes, and the amount of flexion increases toward the upper end 48b.

[0053] As shown by the solid lines in FIGS. 4 and 7, the valve element 48 constitutes a part of the peripheral wall 44 in the closed state, and a gap 54 is formed between the peripheral wall 44 and the valve element 48 in the closed state. The operation of the above configuration will be described below.

[0054] As shown in Figure 8, by opening the lid 12, tilting the container 2 so that the hinge 33 is facing upward, and squeezing the container 2, the content liquid 4 in the container 2 can be poured out from the pouring tube 11 to the outside.

[0055] At this time, the pressure inside the container 2 rises, and as shown by the imaginary line in Figure 5, the upper end 48b of the valve body 48 swings in the opening direction 50, causing the valve body 48 to deform inwardly of the peripheral wall 44 and open the opening 47, as shown in Figure 8, and the content liquid 4 inside the container 2 flows through the opening 47 in the peripheral wall 44 into the introduction space 46 inside the peripheral wall 44, passes from the introduction space 46 through the injection flow path 30 inside the injection tube 11, and is injected from the tip opening 27 of the injection tube 11.

[0056] When the content liquid 4 is dispensed in this manner, the content liquid 4 does not flow directly from inside the container 2 into the dispensing flow path 30 of the dispensing tube 11, but first flows into the introduction space 46 surrounded by the peripheral wall 44, and immediately thereafter flows from the introduction space 46 into the dispensing flow path 30 of the dispensing tube 11, thereby preventing the flow of the content liquid 4 from being disturbed when it flows into the dispensing flow path 30 of the dispensing tube 11.

[0057] Furthermore, as described above, when the liquid content 4 is poured out with the container 2 tilted so that the hinge 33 faces upward, the opening 47 of the peripheral wall 44 faces upward, and the liquid content 4 in the container 2 flows from top to bottom through the opening 47 and into the introduction space 46 in the peripheral wall 44. This allows the liquid content 4 to flow smoothly from the opening 47 into the introduction space 46.

[0058] Furthermore, as shown in Figure 5, the introduction space 46 and the dispensing flow path 30 of the dispensing tube 11 are continuous in the direction of the axis 52 of the dispensing tube 11, so the content liquid 4 that flows into the introduction space 46 from inside the container 2 flows smoothly from the introduction space 46 into the dispensing flow path 30 of the dispensing tube 11, thereby preventing the flow of the content liquid 4 from being disturbed when it flows into the dispensing flow path 30.

[0059] Furthermore, as shown in Figure 8, after the content liquid 4 has been poured out of the container 2 from the pouring tube 11, the container 2 is released from compression and placed with the pouring tube 11 facing upward, which reduces the pressure inside the container 2, and as shown by the solid line in Figure 5, the valve body 48, which had been deformed toward the inside of the peripheral wall 44, returns to its original shape, closing the opening 47.

[0060] At this time, the content liquid 4 in the dispensing flow path 30 of the dispensing tube 11 and in the introduction space 46 returns to the container 2 through the gap 54 between the peripheral wall 44 and the closed valve body 48 (see Figures 4 and 7), so the amount of content liquid 4 remaining in the dispensing flow path 30 of the dispensing tube 11 and in the introduction space 46 is significantly reduced.

[0061] This prevents the content liquid 4 (e.g., soy sauce) remaining in the introduction space 46 from drying and solidifying, causing the valve body 48 to adhere to the peripheral wall 44 in a closed position, resulting in the valve losing its opening and closing function.

[0062] 5, when the valve body 48 is opened, the amount of bending increases toward the upper end 48b, but decreases toward the lower end 48a. This reduces stress at the lower end 48a of the valve body 48, i.e., the portion where the valve body 48 and the bottom wall 45 are connected, making the lower end 48a of the valve body 48 less susceptible to breakage.

[0063] Furthermore, when the cap 1 is formed by, for example, injection molding, there is no need to perform an operation such as pushing the valve body 48 into the pouring flow path 30 of the pouring cylinder 11, so the cap 1 can be easily manufactured.

[0064] Furthermore, the size of the valve body 48 is not limited by the hole diameter of the pouring flow path 30 of the pouring cylinder 11, and furthermore, the shape of the valve body 48 is not limited by the shape of the pouring flow path 30. This improves the degree of freedom when designing the valve body 48. (Second embodiment)

[0065] In the first embodiment described above, as shown in Figures 4 to 7, the flat valve body 48 is provided on the cylindrical peripheral wall 44, but the shape of the valve body 48 is not limited to a flat plate. For example, in the second embodiment described below, as shown in Figures 9 to 11, the valve body 60 is curved in an arc shape when viewed from the direction of the axis 52 of the dispensing tube 11. The radius from the axis 52 of the dispensing tube 11 to the outer peripheral surface of the valve body 60 is the same as or approximately the same as the radius from the axis 52 of the dispensing tube 11 to the inner peripheral surface of the peripheral wall 44 .

[0066] In addition, a curved surface 61 curved in an arc shape is formed at the corner between the inner peripheral surface of the peripheral wall 44 and the inner surface of the bottom wall 45. This curved surface 61 faces the valve body 60 in the radial direction 16 of the peripheral wall 44, and is located on the opposite side of the valve body 60 with respect to the axis 52 of the dispensing cylinder 11. The same components as those in the first embodiment described above are denoted by the same reference numerals, and detailed description thereof will be omitted. The operation of the above configuration will be described below.

[0067] By using the valve element 60 curved in an arc shape, it is possible to impart appropriate rigidity to the valve element 60 compared to the flat valve element 48 (see FIGS. 4 to 7) shown in the first embodiment. Therefore, even when the container 2 is tilted without being squeezed so that the hinge 33 faces upward, it is possible to prevent the valve element 48 from accidentally deforming inward of the peripheral wall 44 due to its own weight and opening the opening 47, as shown by the imaginary line in FIG. 9.

[0068] Furthermore, after the lid 12 is opened and the container 2 is compressed to dispense the liquid content 4 from the dispensing tube 11, the container 2 is released from compression and the container 2 is placed with the dispensing tube 11 facing upward. As shown by the solid line in Figure 9, the valve body 60, which had been deformed toward the inside of the peripheral wall 44, returns to its original shape and closes the opening 47.

[0069] At this time, the liquid content 4 in the peripheral wall 44 is guided by the curved surface 61 and flows toward the valve body 60, so that it returns reliably and smoothly to the container 2 through the gap 54 between the peripheral wall 44 and the closed valve body 60.

[0070] In the second embodiment described above, as shown in FIG. 10 , the radius from the axis 52 of the dispensing tube 11 to the outer peripheral surface of the valve body 60 and the radius from the axis 52 to the inner peripheral surface of the peripheral wall 44 are made the same or almost the same, but the radius from the axis 52 to the outer peripheral surface of the valve body 60 and the radius from the axis 52 to the outer peripheral surface of the peripheral wall 44 may be made the same or almost the same, and the radius from the axis 52 to the inner peripheral surface of the valve body 60 and the radius from the axis 52 to the inner peripheral surface of the peripheral wall 44 may also be made the same or almost the same. (Third embodiment)

[0071] In the first embodiment described above, as shown in FIG. 5, the lower end 48a (an example of one end) of the valve body 48 is integrally connected to the bottom wall 45, and similarly, in the second embodiment described above, as shown in FIG. 9, the lower end 60a (an example of one end) of the valve body 60 is integrally connected to the bottom wall 45.

[0072] 12, an upper end 48b (an example of the other end) of the valve body 48 is integrally connected to the top wall 19, and a lower end 48a (an example of one end) of the valve body 48 is swingable in opening and closing directions 50, 51. The valve body 48 is configured so that the upper end 48b hardly bends, and the amount of bending increases toward the lower end 48a. The operation of the above configuration will be described below.

[0073] When the container 2 is squeezed to dispense the liquid contents 4 from the dispensing tube 11, the lower end 48a of the valve body 48 swings in the opening direction 50, as shown by the virtual line in Figure 12, causing the valve body 48 to deform inwardly of the peripheral wall 44 and opening the opening 47.

[0074] Furthermore, when the valve body 48 is opened, the lower end 48a of the valve body 48 bends more, but the upper end 48b of the valve body 48 bends less. This reduces stress at the upper end 48b of the valve body 48, i.e., the portion where the valve body 48 and the top wall 19 are connected, making the upper end 48b of the valve body 48 less susceptible to breakage.

[0075] In addition, as a fourth embodiment, as shown in Figure 13, one of the side edge ends of the valve body 48 in the circumferential direction 65 of the peripheral wall 44 may be integrally connected to the end of the peripheral wall 44 facing the opening 47, and the other of the side edge ends of the valve body 48 in the circumferential direction 65 of the peripheral wall 44 may be able to swing in the opening and closing directions 50, 51.

[0076] Furthermore, as a fifth embodiment, as shown in FIG. 14 , the valve body 48 may be divided into two parts, a first valve body 48a and a second valve body 48b, in the circumferential direction 65 of the peripheral wall 44 to form a double door structure, with one side edge of the first valve body 48a being integrally connected to one end of the peripheral wall 44 facing the opening 47, and the other side edge of the second valve body 48b being integrally connected to the other end of the peripheral wall 44 facing the opening 47. In the above-described embodiments, the liquid content 4 such as seasoning is given as an example of the content, but it may be a highly viscous paste-like content or the like. [Explanation of symbols]

[0077] 1 cap 2 containers 3 Mouth 4 Contents liquid (contents) 10 Cap body 11 Pour tube 12 Lid 19 Top Wall 33 Hinge 43 Introduction 44 Peripheral wall 45 bottom wall 46 Introduction space 47 Opening 48 Valve body 48a Lower end (one end) of valve body 48b Upper end of valve body (other end) 50 Opening direction 51 Close direction 52 Axis of the dispensing cylinder 54 Gap 60 Valve body 60a Lower end portion (one end portion) of the valve body 61 Curved Surface

Claims

1. A cap having a cap body attached to the mouth of a container, a pouring tube for pouring the contents of the container to the outside, and a lid for opening and closing the pouring tube, The cap body has a top wall that covers the mouth portion, The spout protrudes from the top wall toward the outside of the mouth. An introduction portion is provided on the top wall to introduce the contents of the container from the opening portion into the pouring tube, the introduction part has a cylindrical peripheral wall whose bottom on the container side is closed, an introduction space formed within the peripheral wall, an opening formed in a part of the peripheral wall, and a valve body that opens and closes the opening, The peripheral wall is provided so as to protrude from the top wall toward the container, The introduction space is in communication with the inside of the pouring cylinder, The valve body opens the opening by deforming inwardly of the peripheral wall, and closes the opening by returning to its original shape.

2. 2. The cap according to claim 1, wherein a gap is formed between the peripheral wall and the closed valve body.

3. The bottom of the peripheral wall is closed by a bottom wall, One end of the valve body is connected to the bottom wall, 2. The cap according to claim 1, wherein the other end of the valve body is swingable in the opening and closing directions.

4. 4. The cap according to claim 3, wherein the valve body is flexible and flexes flexibly to open the opening, with the amount of flexing increasing toward the other end.

5. The bottom of the peripheral wall is closed by a bottom wall, The other end of the valve body is connected to the top wall, 2. The cap according to claim 1, wherein one end of the valve body is swingable in the opening and closing directions.

6. 6. The cap according to claim 5, wherein the valve body is flexible and flexes flexibly to open the opening, with the amount of flexing being greater towards one end.

7. The lid is connected to the cap body via a hinge, 2. The cap according to claim 1, wherein the opening of the introduction portion is located on a side opposite the hinge.

8. 2. The cap according to claim 1, wherein the introduction space and the interior of the pouring cylinder are continuous in the axial direction of the pouring cylinder.

9. 2. The cap according to claim 1, wherein the valve body is flat.

10. 2. The cap according to claim 1, wherein the valve body is curved in an arc shape when viewed from the axial direction of the pouring tube.

11. The bottom of the peripheral wall is closed by a bottom wall, A curved surface is formed in a circular arc shape at a corner between the inner peripheral surface of the peripheral wall and the inner surface of the bottom wall, 3. The cap according to claim 2, wherein the curved surface faces the valve body in the radial direction of the peripheral wall.

12. 2. The cap according to claim 1, wherein the valve body forms a part of the peripheral wall in the closed state.

Images