JP6298157B2 - On-off valve, spout and liquid container - Google Patents

Description

  The present invention relates to an on-off valve, a spout having an on-off valve, and a liquid container having a spout.

  Conventionally, a liquid is enclosed in a deformable storage bag to transport or store the liquid. Among such liquid containers, a pouch container in which a spout called a spout is attached as a liquid spout to a deformable bag is known. The pouch container can be filled with any liquid that does not cause a chemical reaction with the spout or the storage bag.

  JP 2012-106800 A and JP 2013-233984 A disclose a spout and a check valve attached to the inside of the spout. The check valve attached to the inside of the spout includes a cylindrical main body portion, a lid portion arranged to close one opening of the main body portion, and a hinge portion that connects the main body portion and the lid portion. Is disclosed. In Japanese Patent Application Laid-Open No. 2012-106800, the lid has a protrusion on the side surface that contacts the peripheral edge of the opening of the main body, and the protrusion contacts the peripheral edge of one opening of the main body. It has been disclosed that by providing such a protruding portion, it is difficult for the lid portion to enter the opening of the main body portion even when an impact is applied to the check valve. In JP2013-233984A, there is provided a liquid reservoir for storing the contents remaining on the check valve. By providing such a liquid reservoir, it is disclosed that the contents remaining on the check valve are not easily spilled even when the cap of the pouch container is closed or the pouch container is slightly tilted.

JP 2012-106800 A JP 2013-233984 A

  For liquids stored or transported in pouch containers, it may be preferable to avoid contact with air. In particular, it is preferable to avoid contact with air in a liquid that changes in quality or deteriorates in quality when contacted with air. For example, some seasonings deteriorate in taste and flavor when exposed to air for a long time, and it is preferable to avoid contact with air during the storage period. In particular, it is preferable that air does not enter the inside of the container even when a part of the contents is used. In a hard bottle container or the like in which a predetermined shape is maintained, when the liquid inside the container flows out, air enters instead of the outflowed liquid, and as a result, the liquid in the contents and the air come into contact with each other.

  In the pouch container, since the storage bag filled with the liquid is deformed, the contents flow out and the storage bag is deformed, so that the entry of air can be suppressed. Japanese Patent Application Laid-Open Nos. 2012-106800 and 2013-233984 disclose a pouch container that transports and stores liquid contents. And the check valve which suppresses that air enters the inside of a storage bag from outside air to the spout is attached. In these pouch containers, air can be prevented from entering the inside of the containing bag, and deterioration and deterioration of the liquid inside can be suppressed. However, the lid can be opened naturally only by tilting the pouch container. There has been room for improvement in terms of further suppressing the ingress of air into the storage bag after pouring while keeping the contents of the storage bag poured out.

  The present invention is capable of naturally pouring the liquid contents of the storage bag by simply tilting the pouch container, and effectively opening and closing the air into the storage bag after pouring, the spout and the liquid storage The purpose is to provide a vessel.

The on-off valve of the present invention is an on-off valve that is attached to a container that contains a liquid, and is a cylindrical main body, a lid that is pivotably formed and opens and closes a hole in the main body, and a main body A wall portion surrounding the lid portion, and a thin portion constituting a pivot axis of the lid portion. The main body portion, the lid portion, the wall portion, and the thin wall portion are integrally formed of one material, and the cross-sectional shape has an English letter H shape. The lid portion protrudes from the end surface of the main body portion in the entire circumferential direction, and further has an outer surface, an inner surface, and a contact surface that contacts the end portion of the hole portion. An angle R of the end of the hole of the main body that contacts the contact surface of the lid is 0.01 mm or more and 0.50 mm or less. The diameter of the outer surface of the lid portion is formed larger than the diameter of the hole portion of the main body portion. The contact surface is inclined with respect to the surface of the hole.

  An angle formed by the contact surface and the surface of the hole is 30 ° or more and 60 ° or less.

  In the above invention, the lid portion is rotatably supported with respect to the main body portion, and includes a thin portion that constitutes a pivot shaft of the lid portion, and the thin portion is formed such that both end portions are thicker than the central portion. It is preferable.

  The spout of the present invention includes the above-described on-off valve and a support member that supports the on-off valve.

  The liquid container of the present invention includes the spout described above and a container, and the container includes a flexible storage bag.

  According to the present invention, the liquid contents of the storage bag can be poured out naturally only by tilting the pouch container, and the on-off valve, spout, and the like that effectively suppress the entry of air into the storage bag after the pouring is completed. A liquid container can be provided.

It is a perspective view of the pouch container in an embodiment. It is a perspective view when the spout and cap in embodiment are cut | disconnected. It is a perspective view when the on-off valve in the embodiment is cut and viewed from above. It is an expanded sectional view of the upper part of the spout in an embodiment. It is a top view of the on-off valve in an embodiment. It is a bottom view of the on-off valve in an embodiment. It is a perspective view when the on-off valve in the embodiment is cut and viewed from the back side. It is a perspective view when the other on-off valve in an embodiment is cut. It is sectional drawing of the other spout in embodiment. It is sectional drawing of the further another spout in embodiment.

  With reference to FIG. 1 to FIG. 10, an on-off valve, a spout with an on-off valve, and a liquid container with a spout will be described. The liquid container in the present embodiment is a pouch container having a spout.

  In FIG. 1, the perspective view of the pouch container in this Embodiment is shown. The pouch container 1 includes a storage bag 2 that functions as a storage body that stores a liquid. The storage bag 2 has flexibility and can be deformed according to the amount of liquid stored inside. The housing bag 2 can be formed of, for example, a resin.

  The pouch container 1 includes a spout 3 attached to the containing bag 2 and a cap 4 that seals the spout 3. The spout 3 functions as a spout when pouring the liquid inside the containing bag 2 into another container or the like. When sealing the pouch container 1, the cap 4 is attached to the spout 3 as indicated by an arrow 91. In the present embodiment, the pouch container 1 is sealed by screwing the cap 4 into the spout 3.

  FIG. 2 shows a cutaway perspective view of the spout and cap in the present embodiment. The spout 3 includes a support member 5. The support member 5 includes a base portion 51 and a cylindrical portion 52 that protrudes from the base portion 51 and extends. The base material portion 51 is bonded to the accommodation bag 2 by heat fusion or the like. A screw thread 53 is formed in the cylindrical portion 52. The cap 4 is screwed to be fixed to the cylindrical portion 52, and the opening of the cylindrical portion 52 is sealed with the cap 4.

  The spout 3 includes an on-off valve 9 disposed inside the cylindrical portion 52. The on-off valve 9 opens spontaneously when the pouch container 1 is tilted to pour the liquid inside the storage bag 2. On the other hand, the pouch container 1 is naturally closed when the pouch container 1 is erected after the liquid has been poured. Air is prevented from entering the interior of the. That is, the on-off valve 9 functions as an air inflow suppression valve. The on-off valve 9 is fixed inside the cylindrical portion 52 by the presser member 6. The on-off valve 9 is attached to the accommodation bag 2 via the support member 5.

  The pressing member 6 is formed so as to be press-fitted into a hole formed in the support member 5. A hole through which the liquid flows is also formed inside the pressing member 6. When the spout 3 is assembled, the opening / closing valve 9 is inserted into the cylindrical portion 52. Then, the on-off valve 9 is fixed inside the cylindrical portion 52 by inserting the pressing member 6 into the base portion 51.

  FIG. 3 shows a perspective view when the on-off valve in the present embodiment is cut. In FIG. 4, the expanded sectional view of the spout of the part by which the on-off valve in this Embodiment is arrange | positioned is shown. 2 to 4, the on-off valve 9 includes a cylindrical main body portion 11 and a lid portion 21 supported by the main body portion 11. The main body 11 of the present embodiment is formed in a cylindrical shape. The main body 11 includes a hole 12 extending along the axial direction. The hole 12 passes through the main body 11. The main body portion 11 includes a collar portion 14 that engages with the cylindrical portion 52 of the support member 5.

  The lid portion 21 has a shape obtained by cutting out a part of the truncated cone shape. The lid 21 is formed so that the opening at the end of the hole 12 can be sealed. The lid portion 21 has an outer surface 23 that is a surface facing outward and an inner surface 24 that is a surface facing the inside of the containing bag 2. The lid portion 21 is formed so that the area of the outer surface 23 is larger than the area of the inner surface 24. The lid 21 has a contact surface 22 that contacts the end of the hole 12 of the main body 11 and seals the opening. The contact surface 22 is inclined with respect to the outer surface 23 and the inner surface 24.

  The lid portion 21 is connected to the main body portion 11 via the thin portion 31. The thin portion 31 is formed so as to be thinner than the thickness of the lid portion 21. The thin portion 31 is biased in the direction in which the lid portion 21 is closed. The thin portion 31 has a hinge function. The lid 21 rotates as indicated by an arrow 92 with the thin portion 31 as a rotation axis. As the lid portion 21 rotates, the opening of the hole portion 12 opens and closes.

  The main body 11 has an end face 15 that extends outward. The lid portion 21 of the present embodiment protrudes from the end face 15 over the entire circumferential direction when closed. That is, the entire outer surface 23 of the lid portion 21 is disposed outside the end surface 15 of the main body portion 11. Alternatively, the entire inner surface 24 of the lid portion 21 is disposed on the inner side of the end surface 15 of the main body portion 11. In the present embodiment, the upper half of the lid portion 21 protrudes from the end surface 15, and the lower half of the lid portion 21 is disposed inside the hole portion 12.

  The on-off valve 9 includes a wall portion 13 that protrudes outward in the axial direction from the position where the lid portion 21 is disposed. The wall portion 13 has a shape protruding from the end surface 15. The wall portion 13 of the present embodiment is formed in a cylindrical shape. The wall portion 13 is formed so as to surround the lid portion 21. That is, the lid portion 21 of the present embodiment is disposed inside the wall portion 13.

  In the on-off valve 9 of the present embodiment, the main body portion 11, the lid portion 21, the wall portion 13, and the thin portion 31 are integrally formed of one material. The on-off valve 9 of the present embodiment is made of silicon rubber. Silicone rubber is a material that increases the urging force that urges the lid 21 in the closing direction when the main body 11, the lid 21, and the thin portion 31 are integrally molded. Note that the material of the on-off valve is not limited to silicon, and can be formed of an arbitrary material having elasticity. For example, the on-off valve may be formed of a resin such as butadiene rubber, polyethylene, or polypropylene.

  FIG. 5 shows a plan view of the on-off valve in the present embodiment. The lid 21 has an arcuate portion 26 and a linear portion 27 when viewed in plan. The arc-shaped portion 26 is formed along the wall portion 13. The straight portion 27 corresponds to the thin portion 31. In the lid portion 21, a line in contact with the end portion of the hole portion 12 of the main body portion 11 is an arc.

  FIG. 6 shows a bottom view of the on-off valve in the present embodiment. With reference to FIGS. 5 and 6, lid portion 21 of the present embodiment is formed such that diameter R <b> 1 of outer surface 23 is larger than diameter R <b> 2 of hole portion 12 of main body portion 11. The lid 21 is formed so that the diameter R1 of the outer surface 23 is larger than the diameter R3 of the inner surface 24. The on-off valve 9 of the present embodiment is formed so that the difference between the diameter R1 and the diameter R2 is large. For example, when the diameter R1 is 5 mm or more and 20 mm or less, the difference between the diameter R1 and the diameter R2 is preferably 0.7 mm or more and 4.0 mm or less, more preferably 0.8 mm or more and 3.0 mm or less. . For example, when the diameter R1 is 21 mm or more and 60 mm or less, the difference between the diameter R1 and the diameter R2 is preferably 1.0 mm or more and 8.0 mm or less, more preferably 2.0 mm or more and 6.0 mm or less. . By making the above difference, the moldability when integrally manufacturing the main body 11, the lid 21, and the thin portion 31 is improved, and the lid 21 is dropped due to vibration or impact during use or transportation. Can be suppressed.

  The pouch container 1 of the present embodiment is stored upright or transported. In this case, the lid portion 21 is closed due to the urging force and gravity due to the thin portion 31. The contact surface 22 of the lid portion 21 contacts the end portion of the hole portion 12 of the main body portion 11 to seal the hole portion 12. When the liquid inside the storage bag 2 is poured into another container or the like, the pouch container 1 is tilted. The liquid inside the storage bag 2 flows toward the spout 3. By the action of the gravity of the liquid, the lid portion 21 opens naturally and the liquid inside flows out from the spout 3.

  A biasing force that biases the lid portion 21 in the closing direction by the thin portion 31 is acting on the contact surface 22 of the lid portion and the end portion of the hole portion 12. If left unattended for a long time, the contact surface 22 and the end of the hole 12 may be in close contact with each other, which may cause a problem that the pouch container cannot flow when tilted. In the on-off valve 9 of the present embodiment, the end of the hole 12 is chamfered to form a minute rounded corner. The curvature radius of the corner R at the end of the hole 12 is 0.01 mm or more and 0.50 mm or less, preferably 0.01 mm or more and 0.30 mm or less, more preferably 0.01 mm or more and 0.10 mm or less. is there. When the angle R exceeds 0.50 mm, the contact surface 22 of the lid portion and the end of the hole portion 12 are in close contact with each other due to being left for a long time, and a trouble that cannot flow out when the pouch container is tilted easily occurs. On the other hand, if the angle R is less than 0.01 mm, the contact surface 22 and the end of the hole portion 12 have minute irregularities, so that the minute opening of the contact portion becomes large, and the liquid enters the contact portion. Even if it arrange | positions, the malfunction which air approachs into the inside of the storage bag 2 tends to arise. By making the angle R of the end of the hole 12 within the above range, the liquid contents of the containing bag can be poured out naturally only by tilting the pouch container, and the contact surface 22 and the hole after the pouring are finished. The contact part with the edge part of the part 12 is sealed, and the approach of the air to a storage bag can be suppressed effectively.

  When the on-off valve 9 of the present embodiment is manufactured by integral molding, if the angle R is within the above range, it is easy to suppress damage to the mold used for molding.

  By the way, since the contact surface 22 and the end of the hole 12 have minute irregularities, the contact portion between the contact surface 22 and the end of the hole 12 is very small even when the lid 21 is closed. An opening is formed. Here, by arranging the liquid at the contact portion, the minute opening can be sealed with the liquid. As a result, it is possible to suppress the air from entering the inside of the containing bag 2. For example, when the pouch container 1 is made upright after the pouch container 1 is tilted and the liquid is poured, the liquid may move to the bottom of the storage bag 2 and the inside of the storage bag 2 may become negative pressure. Even in such a case, when the liquid is arranged at the contact portion between the contact surface 22 and the end portion of the hole portion 12, the contact portion between the contact surface 22 and the end portion of the hole portion 12 is sealed, and air enters. Can be suppressed.

  Referring to FIG. 4, in the spout 3 of the present embodiment, when the lid portion 21 is closed, the contact surface 22 is inclined with respect to the surface of the hole portion 12 and the end surface 15 of the main body portion 11. The on-off valve 9 is formed so that the angle θi formed by the contact surface 22 and the surface of the hole 12 becomes large when the lid 21 is closed. For example, the angle θi is preferably 25 ° or more and 65 ° or less, more preferably 30 ° or more and 60 ° or less, and further preferably 35 ° or more and 55 ° or less. The angle θe formed between the contact surface 22 and the end surface 15 is 90 ° −θi.

  In the on-off valve 9 of the present embodiment, when the angle θi is within the above range, even when the cap 4 is closed, the liquid inside is caused by the contact surface 22 and the surface of the hole 12 as shown by the arrow 93. It becomes easy to enter the gap formed. The liquid easily reaches the contact portion between the contact surface 22 and the end of the hole 12. For example, the liquid can be supplied to the gap formed by the contact surface 22 and the surface of the hole 12 by the movement of the pouch container 1 or the impact applied to the pouch container 1. As a result, before pouring the liquid from the pouch container 1, the liquid can be disposed in advance at the contact portion between the lid portion 21 and the end of the hole portion 12, and a high sealing effect can be formed. If the angle θi is smaller than the above range, there may be a problem that the lid portion 21 falls into the hole portion 12 due to an impact applied to the pouch container 1 or the like. If the angle θi is larger than the above range, the surface tension of the liquid does not work effectively when the liquid reaches the contact portion between the contact surface 22 and the end of the hole 12. As a result, the contact portion between the contact surface 22 and the end of the hole 12 may not be sealed, and a problem may occur in which air enters.

  When the liquid reaches a part of the contact portion between the contact surface 22 and the end of the hole 12, the liquid advances along the contact portion due to the surface tension of the liquid. As a result, the liquid is disposed over the entire contact portion and can be effectively sealed.

  The liquid that has reached the contact portion between the contact surface 22 and the end of the hole portion 12 stays while being prevented from falling due to surface tension. On the other hand, the liquid that has reached the contact portion between the contact surface 22 and the end portion of the hole portion 12 from the inside oozes into a gap formed between the contact surface 22 and the end surface 15. At this time, since the end of the hole 12 that contacts the contact surface 22 has a specific angle R, the liquid easily moves along the end surface 15 from the contact portion between the contact surface 22 and the end of the hole 12. Thus, the liquid can be easily arranged uniformly over the entire contact portion of the lid portion 21. Furthermore, since the lid portion 21 protrudes from the end surface 15 of the main body portion 11 in the entire circumferential direction, a gap formed by the contact surface 22 and the end surface 15 is formed over the entire contact portion of the lid portion 21. Can be formed. For this reason, the liquid can be arranged uniformly over the entire contact portion between the contact surface 22 and the end of the hole 12. As a result, a high sealing effect of the on-off valve is obtained, and air can be effectively prevented from entering the inside of the housing bag 2 from the outside.

  Further, in the on-off valve 9 of the present embodiment, the wall portion 13 is formed around the entire lid portion 21. The wall 13 is formed along the shape of the contact portion between the lid 21 and the end of the hole 12. After pouring the liquid, the lid portion 21 is closed and the liquid adhering to the inner surface of the wall portion 13 falls on the end surface 15 of the main body portion 11. The liquid flows toward the contact portion between the lid 21 and the end of the hole 12. For this reason, a liquid can be stably supplied to the contact part of the cover part 21 and the edge part of the hole part 12, and a contact part can be sealed more effectively. When the wall portion 13 is formed in a part around the lid portion 21, the liquid attached to the inner surface of the wall portion 13 may not flow toward the contact portion between the lid portion 21 and the end portion of the hole portion 12. is there. In such a case, the problem that air enters the inside of the housing bag 2 from the outside tends to occur.

  Since the difference between the diameter R1 of the outer surface 23 of the lid 21 and the diameter R2 of the hole 12 is large, the lid 21 can be prevented from falling into the hole 12. For example, when the pouch container 1 is used or transported, it is possible to suppress the drop of the lid portion 21 due to vibration and impact. When the on-off valve 9 is transported alone and when the spout 3 is assembled, the lid portion 21 can be effectively prevented from dropping into the hole portion 12.

  Further, referring to FIG. 3, the on-off valve 9 of the present embodiment is provided with a wall portion 13, so that the cross-sectional shape is an English letter H shape. For this reason, the rigidity of the on-off valve 9 is increased and deformation can be suppressed. It can suppress that the main-body part 11 deform | transforms and the cover part 21 falls into the hole part 12. FIG. Moreover, it can suppress that the shape of the contact surface 22 of the cover part 21 or the edge part of the hole part 12 deform | transforms, and a large opening is made in the contact part of the contact surface 22 and the edge part of the hole part 12. FIG. That is, the contact line between the contact surface 22 and the end of the hole portion 12 can be maintained in an arc shape, and the entry of air can be effectively suppressed.

  Moreover, the wall part 13 becomes a barrier of the impact from the outside, and can suppress that the cover part 21 falls into the inside of the hole part 12 by the impact from the outside. Furthermore, the wall 13 serves as a guide member that determines the direction of pouring the internal liquid when pouring the internal liquid. For this reason, the user can pour liquid in a desired direction.

  In FIG. 7, the fracture | rupture perspective view when the on-off valve of this Embodiment is seen from the back side is shown. Referring to FIGS. 6 and 7, thin portion 31 of the present embodiment has reinforcing portions 32 at both end portions. The reinforcing portion 32 is formed thicker than the portion other than the reinforcing portion 32. Thus, the thin-walled portion 31 of the present embodiment is formed such that the end portions on both sides are thicker than the center portion. For example, the thickness of the reinforcing part 32 at both end portions is preferably 1.1 times or more and 5.0 times or less, more preferably 1.3 times or more and 4.0 times or less of the thickness of the central part, Preferably they are 1.5 times or more and 3.0 times or less. By adopting this configuration within the above range, both ends of the rotating shaft constituted by the thin portion 31 can be strongly fixed to the main body portion 11. It is possible to suppress the rotation shaft from being deformed or the rotation shaft from being inclined. For this reason, the lid portion 21 can be stably rotated, and the lid portion 21 can be prevented from falling into the hole portion 12. Further, the contact surface 22 can be stably brought into contact with the end portion of the hole portion 12 of the main body portion 11 without changing the contact surface 22 of the lid portion 21 from a desired direction. As a result, the liquid contents of the storage bag can be poured out naturally by simply tilting the pouch container, and the contact portion between the contact surface 22 and the end portion of the hole 12 is sealed after the pouring is completed, and the storage bag is formed. The function of suppressing the entry of air can be stably exhibited. If the thickness of the reinforcing part 32 is larger than the above range, the liquid content in the storage bag cannot be poured out naturally even if the pouch container is tilted. Further, if the thickness of the reinforcing portion 32 is smaller than the above range, the rotation shaft is deformed or the rotation shaft is inclined due to an impact applied to the pouch container 1 or the like, and air is introduced into the housing bag 2 from the outside. May cause a bug to enter.

  Referring to FIG. 4, the cylindrical portion 52 of the support member 5 of the present embodiment has a convex portion 55 that discharges from the inner surface. The convex portion 55 is formed over the entire circumferential direction at a position in contact with the wall portion 13 of the on-off valve 9. The convex portion 55 presses the wall portion 13 of the on-off valve 9 and the wall portion 13 is deformed. By adopting this configuration, it is possible to effectively prevent air from entering the inside of the pouch container 1 from the gap between the cylindrical portion 52 of the support member 5 and the on-off valve 9. In addition, the convex part may be formed in the wall part or main-body part of an on-off valve.

  The lid portion 21 of the present embodiment is formed in a truncated cone shape, but is not limited to this shape, and may be formed so that the contact surface of the lid portion closes the end portion of the hole portion. FIG. 8 is a perspective view when another on-off valve in the present embodiment is cut. A concave portion 25 is formed on the inner surface of the lid portion 21 of the other on-off valve 9. Thus, the recessed part may be formed in the inner surface of a cover part. Furthermore, the convex part may be formed in the outer surface or inner surface of the cover part.

  Referring to FIG. 2, the spout 3 according to the present embodiment is fixed by the presser member 6 after the on-off valve 9 is fitted into the support member 5. It can be supported by the support member in the form.

  FIG. 9 shows a cross-sectional view of another spout in the present embodiment. In another spout 3, the adapter 7 is inserted into the hole 54 of the support member 5. The adapter 7 includes a cylindrical part 61 and a cover part 63 formed so as to cover the on-off valve 9. The on-off valve 9 is fixed inside the adapter 7 by being locked to a fixing portion 62 protruding from the inner surface of the cylindrical portion 61. An outflow hole 8 through which liquid flows out is formed in the cover portion 63 of the adapter 7. Thus, the on-off valve 9 may be fixed to the support member 5 via the adapter 7.

  FIG. 10 shows a cross-sectional view of still another spout in the present embodiment. Still another support member 5 of the spout 3 includes a cover portion 56 formed so as to cover the on-off valve 9 inside the cylindrical portion 52. The cover portion 56 is formed with an outflow hole 58 for the liquid to flow out. The support member 5 has a fixing portion 57 that protrudes from the surface of the hole portion 54. The on-off valve 9 is fixed to the support member 5 by being locked to the fixing portion 57. Thus, the on-off valve 9 may be fixed to the support member 5 without the presser member 6 interposed therebetween.

  The spout of the present embodiment is attached to a flexible storage bag, that is, a flexible packaging material, but is not limited to this form, and can be attached to a storage body that stores an arbitrary liquid. For example, a spout may be attached to a container that cannot be deformed.

  The pouch container of the present embodiment is suitable for transporting and storing a liquid whose quality deteriorates when it comes into contact with air such as seasonings such as soy sauce and beverages such as alcohol and wine. Further, the present invention can be applied to a container or the like in which a storage bag is disposed inside a large metal outer container that does not deform, such as a funnel can, and a spout protrudes from the outer container.

  The above embodiments can be combined as appropriate. In the respective drawings described above, the same or equivalent parts are denoted by the same reference numerals. In addition, said embodiment is an illustration and does not limit invention. Further, in the embodiment, changes of the embodiment shown in the claims are included.

DESCRIPTION OF SYMBOLS 1 Pouch container 2 Storage bag 3 Spout 5 Support member 9 On-off valve 11 Main body part 12 Hole part 13 Wall part 15 End surface 21 Lid part 22 Contact surface 31 Thin part 32 Reinforcement part

Claims (5)

An on-off valve attached to a container for containing liquid,
A tubular body,
A lid that is pivotably formed and opens and closes a hole in the body,
A wall projecting outward from the end surface of the main body and surrounding the lid;
The lid portion is rotatably supported with respect to the main body portion, and includes a thin portion that constitutes a pivot shaft of the lid portion,
The main body, the lid, the wall, and the thin part are integrally formed of one material, and the cross-sectional shape has an English letter H shape,
The lid portion protrudes from the end surface of the main body portion in the entire circumferential direction, and further has an outer surface, an inner surface, and a contact surface that contacts the end portion of the hole portion,
The curvature radius of the corner R of the end of the hole of the main body that contacts the contact surface is 0.01 mm or more and 0.50 mm or less,
The diameter of the outer surface of the lid is formed larger than the diameter of the hole of the main body,
The on-off valve, wherein the contact surface is inclined with respect to the surface of the hole.   2. The on-off valve according to claim 1, wherein an angle formed between the contact surface and the surface of the hole is 30 ° or more and 60 ° or less. The lid portion is rotatably supported with respect to the main body portion, and includes a thin portion that constitutes a pivot shaft of the lid portion,
The on-off valve according to claim 1, wherein the thin portion is formed such that both end portions are thicker than the central portion. An on-off valve according to claim 1, 2 or 3,
A spout comprising a support member that supports an on-off valve. The spout of claim 4;
Comprising the container,
The liquid container is characterized in that the container includes a flexible storage bag.

Images