JP6452779B2 - Valve unit and container equipped with the same - Google Patents

Description

  The present invention detachably attaches to the inside of the cylindrical spout of the container, thereby preventing air from flowing into the container and preventing the contained fluid from leaking out. The present invention relates to a valve unit that can handle the same and a container including the same.

  Conventionally, pouch containers have been used as containers for storing fluid foods, creamy cosmetics, and the like. The pouch container is a sachet made of a soft synthetic resin that can contain a fluid such as gas, liquid, or a viscous filling.

  In such a pouch container, the content is pushed out from the spout of the container body by pushing the side of the container body to increase the pressure of the contents. However, as a result of the contents being exposed at the spout, there is a problem in that they are oxidized by contact with air or are spoiled by bacteria in the air. In particular, products that do not contain preservatives have been increasing in recent years, and there has been a demand for pouch containers that are easy to cause deterioration and decay of contents and do not contain air.

  For example, the following Patent Document 1 discloses a container body having elasticity and having an extrusion port formed at one end thereof, an inner plug provided by closing the extrusion port, and the inner plug. An inner plug protrusion that protrudes outward from the extrusion port, a through hole that is provided in the inner plug and communicates with the inner side and the outer side of the container body, and has a resilient peripheral edge portion of the extrusion port; A backflow prevention container including a nozzle member that is in close contact with the side surface of the inner plug protrusion is disclosed. According to this invention, it is said that air can be reliably prevented from entering the container body with a simple structure, and the quality of the contents can be maintained.

  However, in the invention disclosed in Patent Document 1, a space is formed between the cover portion and the inner plug protrusion in the nozzle member, and as a result of the accumulation of air in the space, the contents are still oxidized by the air or by bacteria. There is a problem that corruption occurs.

  The invention disclosed in Patent Document 1 is a backflow prevention mechanism integrated with a container in which a nozzle member or the like is provided directly at the extrusion port of the container, and is only applicable to a pouch container having a cap and a spout having a specific shape. However, there is also a problem that it is not versatile.

JP 2002-2755 A

  The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a valve function excellent in preventing oxidation and the like of contents and preventing leakage in various containers equipped with a cylindrical spout. It is in providing the valve unit which can be provided to, and a container provided with the same.

  The inventors of the present application have studied a valve unit and a container including the valve unit in order to solve the conventional problems. As a result, the inventors have found that the object can be achieved by adopting the following configuration, and have completed the present invention.

  That is, the valve unit according to the present invention is a valve unit for controlling the discharge of the fluid contained in the container from the cylindrical spout part of the container in order to solve the above-described problem, A holder member provided with at least one communicating portion communicating with the interior of the container; and an elastic elastic member attached to the holder member so as to close the communicating portion; The elastic elastic member is detachably attached to the inside, and at least a part of the elastic expansion / contraction member is in contact with the inner surface of the cylindrical outlet portion of the container on the entire circumference, and the elastic expansion / contraction member is a cylinder. A seal portion is provided at a portion that is in contact with the inner surface of the shaped spout portion, and the elastic elastic member closes and closes the communication portion when the fluid is not discharged from the container. Prevents fluid leakage While the ability, characterized in that when releasing the fluid from the container is one that enables release the fluid spaced from the communicating portion from the tubular spout.

  According to said structure, a valve unit consists of a holder member provided with at least 1 communicating part connected with the inside of a container, and the elastic elastic member attached to the said holder member closely. In addition, when the fluid is held inside the container, the elastic elastic member closes the communicating portion of the holder member to prevent fluid leakage. On the other hand, when the fluid is pushed out of the container and released from the cylindrical spout, a gap is created between the holder member and the elastic elastic member by separating from the communicating portion, and the gap is passed through the gap. Thus, the fluid can be discharged from the cylindrical spout.

  In addition, since at least a part of the elastic elastic member is in contact with the inner surface of the cylindrical outlet portion of the container on the entire circumference, a gap is formed between the valve unit and the cylindrical outlet portion. Prevents fluid leakage.

  Moreover, since the elastic elastic member is provided with a seal portion at the portion in contact with the inner surface of the cylindrical spout portion, it is possible to prevent leakage and improve liquid tightness, and to improve the inside of the cylindrical spout portion. It is possible to prevent the valve unit after being attached to the container from dropping out of the cylindrical spout or falling into the container. Since the valve unit having the above-described configuration is used by being detachably mounted inside the cylindrical spout portion of the container, it is possible to prevent leakage and liquid-tightness for various containers provided with the cylindrical spout portion. It is possible to easily provide a valve function with excellent performance.

  In addition, the valve unit configured as described above prevents air from entering the inside of the container, and the elastic elastic member closes the communication portion. Therefore, a gap is formed between the holder member and the elastic elastic member, and air is collected. There is nothing. As a result, for example, even when the fluid inside the container is a fluid food or the like, it can be prevented from being oxidized or spoiled.

  In the above configuration, it is preferable that the holder member includes a latching portion that can be latched at an arbitrary position of the cylindrical spout portion of the container. Thereby, it can prevent that a valve unit falls out from the cylindrical spout of a container.

  In the above configuration, the holder member includes a flange portion provided with the communication portion at an arbitrary position excluding a central portion, and a protrusion provided on the central portion of the flange portion, and the elastic member. The elastic member includes a cover portion that is in close contact with and covering the protrusion, and the cover portion is provided with an opening at a position corresponding to the top of the protrusion, and the flange portion includes the seal portion. Is preferably in close contact with the coating. According to the above configuration, the seal portion of the elastic elastic member is in close contact with the flange portion provided with the communication portion, and in such a state, covers the inner surface and the entire circumference of the cylindrical spout portion of the container. It is in contact. Therefore, with the above configuration, the valve unit can be stably attached to the inner surface of the cylindrical spout part while preventing leakage of the fluid contained in the container, and the valve unit can fall into the container. , It can be prevented from falling off from the cylindrical outlet.

  Moreover, in the said structure, when discharging a fluid from the cylindrical spout part of a container, it can carry out without scattering the said fluid. That is, in the said structure, a holder member is provided with the projection part, and the cover part of the elastic expansion-contraction member has coat | covered the said projection part. And the opening part is provided in the cover part in the position corresponded to the top part of a projection part. In such a configuration, when the fluid is pushed out from the container, it can be discharged from the opening while passing through the communicating portion and elastically deforming and expanding the cover portion. Therefore, compared with the case where the holder member does not have a protrusion and the elastic elastic member does not have a cover, the fluid can be discharged from the spout without scattering.

  Further, in the above configuration, since the cover portion of the elastic expansion / contraction member is in close contact with the projection, the air can be prevented from entering the container even when the fluid is not discharged. As a result, even when the fluid is a seasoning, food, or the like, it is possible to prevent its oxidation and decay.

Further, in the above configuration, an opening portion of the communication portion is provided on a side peripheral surface of the holder member, and the elastic expansion and contraction member is an annular shape that is in close contact with the holder member and closes the opening portion. It preferably has a structure . According to the above configuration, the fluid flowing out from the opening of the communication portion elastically deforms and spreads the elastic elastic member that is in close contact with the opening and closes the elastic elastic member away from the holder member. Thereby, a gap is generated between the holder member and the elastic elastic member, and the fluid can be discharged from the side peripheral surface of the holder member.

  Further, in the above configuration, the side circumferential surface of the holder member is provided with an opening of the communication portion, and a side circumferential path that communicates with the opening and is provided in a groove shape. It is preferable that the elastic elastic member has a ring shape that closes and closes the side circumferential path. According to the said structure, it becomes possible to guide the fluid which flowed out of the opening part of a communication part to the side periphery provided in the groove shape at the side peripheral surface of the holder member. Further, the fluid guided to the side circumferential path elastically deforms and spreads the elastic stretchable member that is in close contact with the side circumferential path and closes the elastic stretchable member away from the holder member. Thereby, a gap is generated between the holder member and the elastic elastic member, and the fluid can be discharged from the side peripheral surface of the holder member.

  Moreover, in order to solve the above-described problems, the container according to the present invention is characterized in that the above-described valve unit is detachably mounted inside the cylindrical spout portion.

  Since the valve unit of the present invention is detachably mounted inside the cylindrical outlet portion of the container, the valve function is excellent in preventing leakage even for various containers having the cylindrical outlet portion. Can be easily provided. In addition, the valve unit of the present invention prevents the intrusion of air into the container, and there is no gap in which the air accumulates. There is an effect that it can be protected from oxidation and decay.

It is sectional drawing showing a mode that the valve unit which concerns on Embodiment 1 was mounted | worn with the cylindrical spout part of the container. It is a perspective view showing a mode that the said valve unit is mounted | worn with the cylindrical spout part of a container. It is a perspective view showing the holder member in the said valve unit. It is sectional drawing showing a mode that the other valve unit which concerns on the said Embodiment 1 was mounted | worn with the cylindrical spout part of the container. FIG. 4A is a perspective view showing packing in the valve unit, and FIG. 4B is a sectional view of the packing. It is sectional drawing for demonstrating the valve function of the said valve unit, Comprising: The figure (a) represents the state before a fluid is extruded from a container, The figure (b) represents the state from which a fluid is extruded from a container. . It is sectional drawing showing a mode that the valve unit which concerns on Embodiment 2 was mounted | worn with the cylindrical spout part of the container. It is a disassembled perspective view showing the said valve unit. It is sectional drawing for demonstrating the valve function of the said valve unit, Comprising: The figure (a) represents the state before a fluid is extruded from a container, The figure (b) represents the state from which a fluid is extruded from a container. . It is sectional drawing showing a mode that the valve unit which concerns on Embodiment 3 was mounted | worn with the cylindrical spout part of the container. It is a perspective view showing a mode that the said valve unit is mounted | worn with the cylindrical spout part of a container. It is a disassembled perspective view showing the said valve unit. It is sectional drawing showing a mode that the valve unit which concerns on Embodiment 4 was mounted | worn with the cylindrical spout part of the container. It is a disassembled perspective view showing the said valve unit.

(Embodiment 1)
The valve unit according to the first embodiment will be described below with reference to FIGS. However, parts that are not necessary for the description are omitted, and there are parts that are illustrated in an enlarged or reduced manner for ease of explanation. FIG. 1 is a cross-sectional view showing a state in which the valve unit according to the present embodiment is mounted on a cylindrical spout portion of a container. FIG. 2 is a perspective view showing a state in which the valve unit is attached to the cylindrical outlet of the container. FIG. 3 is a perspective view showing a holder member in the valve unit. FIG. 4 is a cross-sectional view showing a state in which another valve unit according to the first embodiment is mounted on the cylindrical spout portion of the container. FIG. 5A is a perspective view showing a packing (elastic elastic member) in the valve unit, and FIG. 5B is a sectional view of the packing. FIG. 6 is a cross-sectional view for explaining the valve function of the valve unit, where FIG. 6A shows a state before the fluid is pushed out of the container, and FIG. 6B shows the fluid pushed out of the container. Represents the state of

<Valve unit>
As shown in FIGS. 1 and 2, the valve unit 10 according to the first embodiment is detachably mounted inside a cylindrical spout 4 in the spout 3. Moreover, the cylindrical spout part 4 of the spout 3 is provided with a cap 5 that can be attached and detached. Although it does not specifically limit as said container, For example, the packaging container etc. which consist of soft synthetic resins etc. are mentioned. More specifically, for example, a pouch container, a double container including a delamination bottle, a thin plastic bottle (which can reduce the internal volume by pressing), a bag made of a soft synthetic resin, etc. And a bag-in-box made of a corrugated cardboard composite container.

  The valve unit 10 includes at least a holder member 1 and a packing (elastic elastic member) 2. The packing 2 is attached in close contact with the holder member 1.

  As shown in FIG. 3, the holder member 1 includes a main body portion 21, a flange portion 23 provided on the upper portion of the main body portion 21 and provided with a plurality of communication portions 22, and an axial direction from the center portion of the flange portion 23. And a protrusion 24 extending vertically in a direction opposite to the container side. A plurality of latching portions 25 that latch on the bottom portion 26 of the cylindrical spout portion 4 are provided at the lower portion of the cylindrical main body portion 21.

  The constituent material of the holder member 1 is not particularly limited, and examples thereof include polypropylene, high density polyethylene, ABS resin, linear low density polyethylene (LLDPE), polystyrene (PS), and polycarbonate (PC). Moreover, it does not specifically limit as a manufacturing method of the holder member 1, A well-known method, such as injection molding, is employable.

  The main body portion 21 has a cylindrical shape, and the outer diameter thereof is smaller than the inner diameter of the cylindrical spout portion 4, and a gap is provided between the main body portion 21 and the cylindrical spout portion 4. However, the size of the outer diameter of the main body portion 21 is not particularly limited, and may be substantially the same as the inner diameter of the cylindrical spout portion 4. The thickness of the main body 21 is not particularly limited as long as it can provide mechanical strength to the extent that the shape can be maintained, and can be set as appropriate.

  On the side peripheral surface 27 of the main body portion 21, an annular locking portion 28 that is partially cut out is provided. Thereby, it can be locked to the annular step portion 29 provided on the inner surface of the cylindrical spout portion 4. As a result, the valve unit 10 can be prevented from falling into the container. Moreover, even if fluid flows into the clearance gap formed between the cylindrical spout part 4 and the main-body part 21 by making a part of latching part 28 into a notch, when a container is stood, fluid will flow. It becomes possible to drop into the container from the notch. In addition, as long as the latching | locking part 28 can be latched to the level | step-difference part 29, the shape is not limited to the case where it is cyclic | annular. For example, an annular shape without a notch or a projection shape may be used.

  The flange portion 23 has a circular shape in plan view, and the outer diameter thereof is smaller than the inner diameter of the cylindrical spout portion 4. The flange portion 23 is provided with a plurality of communication portions 22, and the packing 2 is attached to the holder member 1 so as to be in close contact with the communication portion 22 and closed.

  The outer diameter of the flange portion 23 needs to be at least larger than the outer diameter of the main body portion 21 and smaller than the inner diameter of the cylindrical spout portion 4. By making the outer diameter of the flange portion 23 larger than the outer diameter of the main body portion 21, the entire flange portion 23 can be covered with the packing 2 so that the packing 2 does not fall off the holder member 1. can do. Further, the valve unit 10 can be inserted into the tubular spout portion 4 by making the outer diameter of the flange portion 23 smaller than the inner diameter of the tubular spout portion 4. In addition, the thickness of the flange part 23 is not specifically limited, It can set suitably as needed.

  The communicating part 22 communicates with the inside of the container, and when the fluid contained in the container is pushed out from the container, the fluid passes through the communicating part 22 and is released to the outside. Three communicating portions 22 are provided in the flange portion 23, and the communicating portions 22 are located at equal intervals. However, it is not limited to the case where three communication parts 22 are provided, and at least one or more may be provided. The position where the communication part 22 is provided is not particularly limited, and the communication part 22 can be provided at any position of the flange part 23. However, in the case where a plurality of communication portions 22 are provided, it is preferable that the formation positions thereof be provided at equal intervals. This makes it possible to discharge a substantially uniform amount from the periphery of the protrusion 24 when the fluid is pushed out of the container.

  In addition, as shown in FIG. 3, the communication portion 22 has a shape in which an ellipse is curved, and is curved so as to surround the center of the flange portion 23. However, the shape of the communication portion 22 is not limited to this, and a circular shape, an elliptical shape, a rectangular shape, or the like can be appropriately employed. Further, the size of the communication portion 22 is not particularly limited, and can be set as appropriate in consideration of the fluidity of the fluid stored in the container and the size of the flange portion 23.

  The projecting portion 24 is provided on the central portion of the flange portion 23, and by providing the projecting portion 24, the direction in which the fluid is discharged can be oriented in the direction in which the projecting portion 24 extends. Further, the protrusion 24 has a substantially truncated cone shape. However, the protrusion 24 is not limited to this shape, and may be, for example, a triangular frustum or a quadrangular frustum. Moreover, although the top part 31 of the projection part 24 is flat, it may be curved. However, when the top portion 31 is curved, the curvature is such that the top portion 31 does not contact the inner surface of the top surface 39 of the cap 5 when the cap 5 is attached to the cylindrical spout portion 4 of the container. It is preferable. Thereby, the sealing performance in the closed state by the cap 5 can be improved.

  Further, the protrusion 24 is provided with a groove-shaped guide portion 30 for facilitating the fluid flow toward the top 31 of the protrusion 24 when the fluid is pushed out from the communication portion 22. Thereby, discharge | release of a fluid can be made easy.

  When the valve unit 10 is mounted inside the cylindrical spout portion 44, the height of the projecting portion 24 is the same position as the end of the cylindrical spout portion 44, or the protrusion 24 has the cover portion 32. It is preferable that the height including the cover portion 32 in a state covered with the above is a position equivalent to the end portion of the cylindrical spout portion 44. The outer diameter of the projecting portion 24 is smaller than the outer diameter of the flange portion 23, and is not particularly limited as long as an area to the extent that the communication portion 22 can be provided in the flange portion 23 is secured. In addition, the inside of the protrusion 24 is a cavity, and the inner diameter thereof is smaller than the inner diameter of the main body 21.

  The latching portion 25 includes a leg portion 25a and a claw portion 25b. One end portion of the leg portion 25a is connected to the main body portion 21, and a claw portion 25b is provided at the other end portion. The claw portion 25 b is hooked on the bottom portion 26 of the cylindrical spout portion 4, thereby preventing the valve unit 10 from dropping from the cylindrical spout portion 4. About the shape of the nail | claw part 25b, if it can be latched in the bottom part 26 of the cylindrical spout part 4, it will not specifically limit. In the present embodiment, a step is formed by protruding from the leg portion 25a. There is no particular limitation on the number of hooks 25 provided on the main body 21.

  In addition, about the latching position of the latching | locking part 25, it is not limited to the bottom part 26 of the said cylindrical spout part 4. FIG. For example, as shown in FIG. 4, when there is an overhanging portion 71 that can be hooked on the inner wall surface of the cylindrical spout portion 4, the overhanging portion can be adjusted by appropriately adjusting the length of the leg portion 25a. It is possible to hook the claw portion 25 b to 71.

  In the present embodiment, the four hooking portions 25 are provided on the lower side of the main body portion 21 so as to oppose each other. Further, the respective latching portions 25 are provided so as to be equally spaced from each other. The formation position of the latching portion 25 is not particularly limited, and can be provided at an arbitrary position on the lower side of the main body portion 21. The length of the leg portion 25a in the axial direction is not particularly limited, and can be appropriately set according to the length of the main body portion 21 and the length of the cylindrical spout portion 4. Further, the width of the leg portion 25a is not particularly limited. However, when a large number of the latching portions 25 are not provided, it is preferable that the width of the leg portion 25a is wider. Thereby, the nail | claw part 25b can also be enlarged according to the width | variety of the leg part 25a, and the latching to the bottom part 26 of the cylindrical spout part 4 can be ensured and stabilized.

  As shown in FIGS. 5A and 5B, the packing 2 is attached in close contact with the holder member 1, and includes a cover portion 32 that is in close contact with the protrusion 24 and a flange portion 23. And at least a seal portion 34 that is in close contact with and covers. The packing 2 has elasticity. The elasticity of the packing 2 should just be a grade which produces elastic deformation when a fluid is extruded. Further, it is sufficient that the fluid is restored to the original shape when the extrusion of the fluid is stopped.

  The flange portion 23 of the holder member 1 is provided with a communication portion 22, but the packing 2 is in close contact with the communication portion 22 to prevent the fluid from leaking and the communication portion 22. It is comprised so that a clearance gap may not arise in the circumference | surroundings. When the valve unit 10 is mounted inside the cylindrical spout portion 4, the seal portion 34 becomes a portion that contacts the inner wall surface of the cylindrical spout portion 4. Moreover, since the seal | sticker part 34 contact | abuts with the inner wall face of the cylindrical spout part 4 over the perimeter, it can prevent that the fluid inside a container leaks out. Furthermore, the sealing part 34 can maintain the sealed state of the cylindrical spout part 4 by a frictional force generated between the inner surface of the cylindrical spout part 4. As a result, it is possible to prevent the valve unit 10 from dropping from the cylindrical outlet 4 or falling into the container.

  The thickness of the packing 2 is preferably substantially uniform in the portion covering the flange portion 23 (including the communication portion 22) and the cover portion 32, and when the fluid is pushed out from the communication portion 22, There is no particular limitation as long as it is elastically deformed so that a gap is formed between the holder member 1 and the packing 2. Further, the height h of the seal portion 34 is not particularly limited, but when the valve unit 10 is mounted inside the cylindrical spout portion 4, no fluid leaks out and drops off from the cylindrical spout portion 4. It is preferable to have a height that is not equal.

  The cover portion 32 is provided with an opening 33 at a position corresponding to the top portion 31 of the protrusion 24. The cover portion 32 also covers the peripheral edge portion excluding the central portion of the top portion 31 of the protruding portion 24. Therefore, when the cover portion 32 is closed by the cap 5, the cover portion 32 is in close contact with the inner surface of the top surface 39. On the other hand, the central portion at the top of the protrusion 24 is exposed and is configured not to directly contact the inner surface of the top surface 39 of the cap 5. Accordingly, even when the cap 5 is plugged, the cover portion 32 forms a tightly plugged state and prevents the fluid inside the container from leaking from the opening portion 33.

  Specific examples of the constituent material of the packing 2 include thermoplastic elastomer resin, natural rubber, butyl rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, isoprene-isobutylene rubber, silicone rubber, nitrile rubber, chloroprene rubber, and the like. Is mentioned. By using these raw materials, the packing 2 excellent in elasticity and hermeticity can be obtained. The manufacturing method of the packing 2 is not particularly limited, and for example, it can be manufactured by compression molding or injection molding performed while crushing raw materials.

  The cap 5 is formed of a cylindrical body whose upper part is closed by the top surface 39 and whose lower part is opened. A spiral female thread portion 37 is formed on the inner peripheral surface, and is configured to be able to be screwed into a male thread portion 36 in a spout 3 described later. An annular wall portion 38 is provided on the inner surface of the top surface 39 of the cap 5, and the outer peripheral surface of the wall portion 38 abuts on the inner peripheral surface near the opening of the cylindrical spout portion 4. ing. Therefore, when the cap 5 is screwed into the spout 3, the fluid in the container can be prevented from leaking from the opening 33. Further, as shown in FIG. 2, a knurling 35 having an anti-slip function is provided on the outer peripheral surface of the cap 5. Thereby, the operation | work at the time of winding the cap 5 around the cylindrical spout part 4 of the spout 3 can be performed easily. Moreover, the cap 5 can be easily opened.

  The spout 3 is provided with a male thread portion 36 in addition to the cylindrical spout portion 4. The male screw portion 36 is screwed with a female screw portion 37 provided on the inner peripheral surface of the cap 5.

  As described above, the valve unit 10 according to the present embodiment can be easily mounted inside the cylindrical outlet 4 of the container. A valve function excellent in oxidation of an object (fluid) and prevention of leakage can be easily provided.

<Operation of valve unit>
Next, the operation of the valve unit 10 according to Embodiment 1 will be described. FIG. 6 is a cross-sectional view for explaining the valve function of the valve unit 10. FIG. 6A shows a state before the fluid is pushed out from the container, and FIG. 6B shows the fluid pushed out from the container. Represents a state.

  As shown in FIG. 6A, when no pressing force is applied to the container and the inside of the container is at a normal pressure, the packing 2 is covered in a state of being in close contact with the holder member 1. Accordingly, the communication portion 22 in the flange portion 23 of the holder member 1 is closed in a state of being in close contact with the packing 2. Further, the protrusion 24 of the holder member 1 is also covered with the cover 32 of the packing 2 in close contact. Accordingly, fluid leakage from the opening 33 is prevented when the inside of the container is at normal pressure. In addition, air intrusion and the like are also prevented.

  Next, as shown in FIG. 6B, when a pressing force is applied to the container and the inside of the container is pressurized, the extruded fluid passes through the communication portion 22 and elastically deforms the packing 2 to expand it. The packing 2 is separated from the communication portion 22. Further, the cover portion 32 that is in close contact with the protruding portion 24 also spreads and separates the two while flowing through the groove-shaped guide portion 30 and discharged from the opening 33. In addition, as a result of the pressing force being applied to the container, the pressure is also applied to the valve unit 10, which causes the valve unit 10 to drop off from the cylindrical spout portion 4. Plays a function to prevent. Further, since the latching portion 25 is latched on the bottom portion 26 of the cylindrical spout portion 4, the valve unit 10 is further prevented from dropping off from the cylindrical spout portion 4.

  When the application of the pressing force to the container is stopped, the inside of the container returns to the normal pressure, and as a result, the packing 2 tries to restore the initial shape. As a result, the fluid existing between the holder member 1 and the packing 2 is pushed back to the container. As a result, the packing 2 again returns to the state of being in close contact with the holder member 1 and sealed in a state where air is prevented from staying in the valve unit 10.

  As described above, the valve unit 10 according to the first embodiment prevents intrusion of air into the container, and there is no gap in which air accumulates. For example, food having fluidity inside the container Also in this case, it can be protected from oxidation and decay. Further, when no pressing force is applied to the container, fluid leakage is effectively prevented, so that, for example, the contents can be prevented from spilling even when the container falls.

(Embodiment 2)
The valve unit according to the second embodiment will be described below with reference to FIGS. However, the same components as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted. FIG. 7 is a cross-sectional view illustrating a state in which the valve unit according to Embodiment 2 is attached to the cylindrical spout portion of the container. FIG. 8 is an exploded perspective view showing the valve unit.

<Valve unit>
As shown in FIGS. 7 and 8, the valve unit 40 according to the second embodiment includes a holder member 41 and a packing (elastic elastic member) 42.

  The holder member 41 includes a main body portion 21 and a plurality of hook portions 25. A communication portion 44 that enables communication with the inside of the container is provided inside the main body portion 21. The communication portion 44 includes a straight pipe 44b that allows fluid to flow in a direction perpendicular to the axial direction of the holder member 41, and two branch paths 44a connected to the straight pipe 44b. The straight pipe path 44b and the two branch paths 44a constitute a T-shaped path. The outlet of the branch path 44a is provided as an opening 44c on the side peripheral surface 27 of the main body 21. The straight pipe 44b communicates with the inside of the container. The inner diameters of the branch path 44a and the straight pipe path 44b are the same, but the present invention is not limited to this, and the inner diameters of the both may be different.

  Further, the upper surface 45 of the main body portion 21 is substantially flat, and no protrusions are provided. However, the shape of the upper surface 45 of the main body 21 is not limited to a substantially flat shape, and may be a curved surface. Further, the upper surface 45 of the main body 21 is configured not to directly contact the inner surface of the top surface 39 of the cap 5 when the cap 5 is screwed into the spout 3. However, the present embodiment is not limited to this, and the upper surface 45 of the main body 21 may be in contact with the inner surface of the top surface 39 of the cap 5.

  Further, an annular groove 47 that can be fitted to an annular projecting portion 43 of the packing 42 is provided on the side peripheral surface 27 of the main body 21. Thereby, it is possible to prevent the packing 42 from dropping from the holder member 41.

  The packing 42 has an annular structure as a schematic shape. The annular projecting portion 43 is provided on the inner side surface of the annular packing 42. Further, an annular seal portion 34 that abuts against the inner wall surface of the cylindrical spout portion 4 is provided on the outer peripheral surface of the packing 42. However, it is not preferable that the seal portion 34 is provided in the opening 44c of the branch path 44a or in the vicinity thereof. This is because, as will be described later, the portion of the packing 42 corresponding to the opening 44c enables the fluid to be released by elastically deforming the portion. The seal portion 34 is in contact with the inner wall surface of the cylindrical spout portion 4 over the entire circumference, thereby preventing the valve unit 40 from dropping out of the cylindrical spout portion 4 and also leaking fluid inside the container. Can be prevented.

  The constituent materials of the holder member 41 and the packing 42 are not particularly limited, and the same materials as described in the first embodiment can be used.

<Operation of valve unit>
Next, the operation of the valve unit 40 according to Embodiment 2 will be described. FIG. 9 is a cross-sectional view for explaining the valve function of the valve unit 40. FIG. 9A shows a state before the fluid is pushed out from the container, and FIG. 9B shows the fluid pushed out from the container. Represents a state.

  As shown in FIG. 9A, when no pressing force is applied to the container and the inside of the container is in a normal pressure state, the packing 42 is covered in a state of being in close contact with the holder member 41. Therefore, the opening 44 c of the communication portion 44 in the holder member 41 is closed in a state of being in close contact with the packing 42. Thereby, when the inside of the container is at a normal pressure, leakage of fluid from the opening 44c is prevented. In addition, air intrusion and the like are also prevented.

  Next, as shown in FIG. 9B, when a pressing force is applied to the container and the inside of the container is pressurized, the fluid first flows through the straight pipe 44b and then is divided into a plurality of branch paths 44a. The sink opening 44c is reached. The fluid reaching the opening 44c elastically deforms and spreads the packing 42 closing the opening 44c, and separates the packing 42 from the opening 44c. Thereby, a clearance gap is produced between the holder member 41 and the packing 42, and the fluid is discharged.

  When the application of the pressing force to the container is stopped, the inside of the container returns to the normal pressure, and as a result, the packing 42 tries to restore the initial shape. As a result, the packing 42 returns to the state in which the packing 42 comes into close contact with the holder member 41 again and is sealed in a state in which air is prevented from entering the valve unit 10.

  As described above, the valve unit 40 according to the second embodiment prevents intrusion of air into the container, and there is no gap in which air accumulates. Also in this case, it can be protected from oxidation and decay. Further, when no pressing force is applied to the container, fluid leakage is effectively prevented, so that, for example, the contents can be prevented from spilling even when the container falls.

(Embodiment 3)
The valve unit according to the third embodiment will be described below with reference to FIGS. However, the same components as those in the first or second embodiment are denoted by the same reference numerals and the description thereof is omitted. FIG. 10 is a cross-sectional view illustrating a state in which the valve unit according to Embodiment 3 is attached to the cylindrical spout portion of the container. FIG. 11 is a perspective view showing a state in which the valve unit is attached to the cylindrical spout portion of the container. FIG. 12 is an exploded perspective view showing the valve unit.

  As shown in FIG. 10, the valve unit 50 according to the third embodiment includes a holder member 51 and a packing (elastic elastic member) 52.

  The holder member 51 is provided on the main body portion 56, the flange portion 23 provided on the upper portion of the main body portion 56, and provided with a plurality of communication portions 22, and the side opposite to the axial container side from the center portion of the flange portion 23. And a protrusion 58 extending vertically in the direction of. In addition, a plurality of latching portions 55 that latch on the bottom portion 26 of the cylindrical spout portion 4 are provided at the lower portion of the cylindrical main body portion 56.

  The main body portion 56 is cylindrical, and the outer diameter thereof is smaller than the inner diameter of the cylindrical spout portion 4, and a gap is provided between the main body portion 56 and the cylindrical spout portion 4.

  The projecting portion 58 is provided on the center portion of the flange portion 23 and has a substantially truncated cone shape. However, the protrusion 58 is not limited to this shape, and may be, for example, a triangular frustum or a quadrangular frustum. Moreover, although the top part 31 of the projection part 58 is flat, it may be curved. However, when the top portion 31 is curved, the top portion 31 may not be in contact with the inner surface of the top surface 39 of the cap 5 when the cap 5 is attached to the cylindrical spout portion 4 of the container. preferable. Thereby, the sealing performance in the closed state by the cap 5 can be improved.

  Further, the protrusion 58 is provided with a groove-shaped guide portion 30 for facilitating the fluid flow toward the top of the protrusion 58 when the fluid is pushed out from the communication portion 22. Thereby, discharge | release of a fluid can be made easy.

  When the valve unit 10 is mounted inside the cylindrical spout 44, the height of the protrusion 58 is equal to the end of the cylindrical spout 44, or the protrusion 58 is covered by the cover 32. It is preferable that the height including the cover portion 32 in a state covered with the above is a position equivalent to the end portion of the cylindrical spout portion 44. The outer diameter of the protruding portion 58 is smaller than the outer diameter of the flange portion 23, and is not particularly limited as long as an area to the extent that the communication portion 22 can be provided in the flange portion 23 is secured. The inner side of the protrusion 58 is a cavity, and the inner diameter thereof is substantially the same as the inner diameter of the main body 56.

  The hooking portion 55 includes a leg portion 55a and a claw portion 55b. One end portion of the leg portion 55a is connected to the main body portion 56, and a claw portion 55b is provided at the other end portion. And the nail | claw part 55b latches on the bottom part 26 of the cylindrical spout part 4, and it has prevented that the valve unit 10 falls out from the cylindrical spout part 4. FIG. The leg portion 55 a is provided so as to protrude from the side peripheral surface of the main body portion 56, and is in a state of being in contact with the inner wall surface of the cylindrical spout portion 4. Thereby, the insertion state in the cylindrical spout part 4 of the valve unit 50 can be further stabilized.

  About the shape of the nail | claw part 55b, if it can be latched in the bottom part 26 of the cylindrical spout part 4, it will not specifically limit. In the present embodiment, a step is formed by protruding from the leg portion 55a. Further, the number of the latching portions 55 provided in the main body portion 56 is not particularly limited. In the present embodiment, the four hooking portions 55 are provided on the lower side of the main body portion 56 so as to oppose each other. Further, the respective latching portions 25 are provided so as to be equally spaced from each other. The formation position of the latching portion 55 is not particularly limited, and can be provided at an arbitrary position on the lower side of the main body portion 51. The length of the leg portion 55a in the axial direction is not particularly limited, and may be appropriately set according to the length of the main body portion 51 and the length of the cylindrical spout portion 4. Further, the width of the leg portion 55a is not particularly limited. However, when a large number of the latching portions 55 are not provided, it is preferable that the width of the leg portion 55a is wider. Thereby, the nail | claw part 55b can also be enlarged according to the width | variety of the leg part 55a, and the latching to the bottom part 26 of the cylindrical spout part 4 can be ensured and stabilized. In addition, about the latching position of the latching | locking part 55, it is not limited to the bottom part 26 of the said cylindrical spout part 4. As shown in FIG. For example, when there is an overhanging portion that can be hooked on the inner wall surface of the cylindrical spout portion 4, the claw portion 55b is hooked on the overhanging portion by appropriately adjusting the length of the leg portion 55a. It is possible.

  The constituent materials of the holder member 51 and the packing 52 are not particularly limited, and the same materials as described in the first embodiment can be used.

<Operation of valve unit>
The operation of the valve unit 50 according to the third embodiment is basically the same as that of the valve unit 10 according to the first embodiment. That is, when no pressing force is applied to the container and the inside of the container is at normal pressure, the packing 52 is covered while being in close contact with the holder member 51, and the communication portion 22 of the flange portion 23 is in close contact with the packing 52. Is blocked. Further, the protruding portion 24 of the holder member 51 is also covered with the cover portion 32 of the packing 52 in close contact.

  In addition, when a pressing force is applied to the container and the inside of the container is pressurized, the fluid that has passed through the communication portion 22 elastically deforms and pushes the packing 52. Further, the cover portion 32 that is in close contact with the projection 58 is also spread and flows through the groove-shaped guide portion 30 and is discharged from the opening 33. Further, the seal portion 34 and the latching portion 55 of the packing 52 prevent the valve unit 50 from dropping from the cylindrical spout portion 4.

  Further, when the pressing force is stopped on the container, the inside of the container returns to the normal pressure. As a result, the packing 52 is restored to the initial shape, and thus the fluid existing between the holder member 51 and the packing 52 is present. Is pushed back into the container. As a result, the packing 52 returns to the state in which the packing 52 is in close contact with the holder member 51 and is sealed in a state in which the intrusion of air into the valve unit 50 is prevented.

  As described above, the valve unit 50 according to the third embodiment prevents intrusion of air into the container, and there is no gap in which air accumulates. Also in this case, it can be protected from oxidation and decay. Further, when no pressing force is applied to the container, fluid leakage is effectively prevented, so that, for example, the contents can be prevented from spilling even when the container falls.

(Embodiment 4)
A valve unit according to the fourth embodiment will be described below with reference to FIGS. 13 and 14. However, the same components as those in the first to third embodiments are denoted by the same reference numerals and the description thereof is omitted. FIG. 13 is a cross-sectional view illustrating a state in which another valve unit according to the present embodiment is mounted on the cylindrical spout portion of the container. FIG. 14 is an exploded perspective view showing the valve unit.

  As shown in FIG. 13, the valve unit 60 according to the fourth embodiment includes a holder member 61 and a packing (elastic elastic member) 62.

  The holder member 61 includes at least a main body portion 64 and a communication portion 65 provided on the upper portion of the main body portion 64. In addition, a plurality of latching portions 25 that latch on the bottom portion 26 of the cylindrical spout portion 4 are provided at the lower portion of the cylindrical main body portion 64.

  The main body portion 64 has a cylindrical shape, and the outer diameter thereof is substantially the same as the inner diameter of the cylindrical spout portion 4.

  The communication part 65 includes a branch part 65a having two branch paths 66 therein and a straight pipe part 65b having a straight pipe line 67 inside (see FIG. 14). The straight pipe 67 allows fluid to flow in a direction perpendicular to the axial direction of the holder member 61. Further, the two branch paths 66 and the straight pipe line 67 constitute a T-shaped path. Furthermore, an annular side circumferential path 68 that communicates with the openings of the two branch paths 66 is provided on the side circumferential surface of the branching section 65a. By providing the side circumferential path 68, the fluid pushed out from the opening of the branching portion 65a can be guided to the side circumferential path 68.

  The inner diameters of the branch path 66 and the straight pipe path 67 are the same, but the present invention is not limited to this, and the inner diameters of both may be different. Further, the inner diameter of the straight pipe 67 is configured to be smaller than the inner diameter of the main body portion 64. Further, the outer diameter of the branch portion 65 a is configured to be smaller than the outer diameter of the main body portion 64. Further, the outer diameter of the straight pipe portion 65b is configured to be smaller than the outer diameter of the branching portion 65a, whereby an annular fitting that enables fitting with the packing 62 on the straight pipe portion 65b. A function as a groove is given. Furthermore, although the upper surface 69 of the branch part 65a is substantially flat, the present invention is not limited to this and may be curved.

  As shown in FIG. 14, the latching portion 25 includes a leg portion 25a and a claw portion 25b. One end portion of the leg portion 25a is connected to the main body portion 21, and the claw portion 25b is connected to the other end portion. Is provided. And the nail | claw part 25b is latching on the bottom part 26 of the cylindrical spout part 4, and it has prevented that the valve unit 60 falls off from the cylindrical spout part 4. FIG. Further, the leg portion 25 a is provided on the main body portion 64 so as to contact the inner wall surface of the cylindrical spout portion 4.

  The packing 62 has an annular structure as a schematic shape. The annular projecting portion 63 is provided on the inner side surface of the annular packing 62. Thereby, the overhang | projection part 63 can be fitted with the straight pipe | tube part 65b, and it can prevent that the packing 62 falls off from the holder member 61. FIG. Further, an annular seal portion 34 that abuts against the inner wall surface of the cylindrical spout portion 4 is provided on the outer peripheral surface of the packing 62. However, it is not preferable that the seal portion 34 is provided at or near the branch portion 65a. This is because the portion corresponding to the side circumferential path 68 of the packing 62 allows the fluid to be released by elastically deforming the portion. The seal portion 34 is in contact with the inner wall surface of the cylindrical spout portion 4 over the entire circumference, thereby preventing the valve unit 60 from falling off the cylindrical spout portion 4 and leaking fluid inside the container. Can also be prevented.

  The constituent materials of the holder member 61 and the packing 62 are not particularly limited, and the same materials as described in the first embodiment can be used.

  In the present embodiment, the side circumferential path is described as an example, but the present invention is not limited to this mode. For example, a plurality of groove-like side circumferential paths may be provided at arbitrary positions on the side circumferential surface of the branching portion 65a.

<Operation of valve unit>
The operation of the valve unit 60 according to the fourth embodiment is basically the same as that of the valve unit 40 according to the second embodiment. That is, when no pressing force is applied to the container and the inside of the container is at normal pressure, the packing 62 is covered in close contact with the holder member 61, and the side circumferential path 68 provided in the branch portion 65a is closed. doing.

  Further, in a state in which a pressing force is applied to the container and the inside of the container is pressurized, the fluid first flows through the straight pipe 67 and then splits into the two branch paths 66 respectively. Furthermore, the fluid flowing out from the opening of each branch path 66 flows through the side circumferential path 68, and eventually, the packing 42 closing the side circumferential path 68 is elastically deformed and pushed up. As a result, a portion of the packing 62 opposite to the side where the seal portion 34 is provided is separated from the branch portion 65a to form a gap, and fluid is discharged from the gap. Here, since the side circumferential path 68 is annularly provided on the side circumferential surface of the holder member 61, a gap generated between the holder member 61 and the packing 62 is formed over the entire circumference of the holder member 61 (or the packing 62). Is done. Therefore, a substantially uniform amount of fluid can be discharged over the entire circumference of the holder member 61.

  When the application of the pressing force to the container is stopped, the interior of the container returns to normal pressure, and as a result, the packing 62 tries to restore the initial shape. Thus, the packing 62 closes the side circumferential path 68 and prevents air from entering the valve unit 50.

  As described above, the valve unit 60 according to the fourth embodiment prevents intrusion of air into the container, and there is no gap in which air accumulates. Also in this case, it can be protected from oxidation and decay. Further, when no pressing force is applied to the container, fluid leakage is effectively prevented, so that, for example, the contents can be prevented from spilling even when the container falls.

1 Holder member 2, 42, 52, 62 Packing (elastic elastic member)
4 Tubular outlet 10, 40, 50, 60 Valve unit 15, 25, 55 Hook 21, 56, 64 Main body 22, 44, 65 Communicator 23 Flange 24, 58 Projection 25 a, 55 a Leg 25b, 55b Claw part 26 Bottom part 30 Guide part 32 Cover part 33, 44c Opening part 34 Seal part 41, 51, 61 Holder member 43 Projection part 44a, 66 Branch path 44b, 67 Straight pipe path

Claims (7)

A cylindrical spout portion, a valve unit that controls discharge of the fluid contained therein from the cylindrical spout portion, and a cap that is detachably provided on the cylindrical spout portion; A container comprising:
The valve unit includes a holder member having at least one communication portion communicating with the inside of the container;
An elastic elastic member attached to the holder member so as to close the communication portion;
The valve unit is detachably mounted inside the cylindrical outlet portion of the container,
At least a part of the elastic elastic member is in contact with the inner surface of the cylindrical spout part of the container on the entire circumference,
Furthermore, a seal portion is provided in a portion where the elastic elastic member is in contact with the inner surface of the cylindrical spout portion,
The elastic elastic member closes and closes the communication portion when the fluid is not released from the container, and prevents leakage of the fluid, and when the fluid is discharged from the container, The fluid can be released from the cylindrical spout part apart from the part ,
The cap is a cylinder whose upper part is closed at the top and whose lower part is opened,
An annular wall is provided on the inner surface of the top surface,
When said cap is provided to allow loading and unloading in the tubular spout section, and the outer peripheral surface of the wall portion of the annular, and the inner peripheral surface near the opening of the tubular spout portion is to abut,
The holder member includes a main body,
The side peripheral surface of the main body is provided with an annular locking portion that is partially cut away,
A container provided with an annular stepped portion capable of locking the annular locking portion on an inner surface of the cylindrical spout portion .   The said holder member is a container of Claim 1 provided with the latching | locking part which can be latched in the arbitrary positions of the cylindrical spout part of the said container. The holder member includes a flange portion provided with the communication portion at an arbitrary position excluding a center portion, and a protrusion provided on the center portion of the flange portion,
The elastic expansion and contraction member includes a cover portion that is in close contact with and covering the projection portion,
Furthermore, the cover portion is provided with an opening at a position corresponding to the top of the protrusion,
A container according to claim 1 or 2 wherein the sealing portion is covered in close contact with the flange portion. 4. The container according to claim 3 , wherein the cover portion of the elastic elastic member is in close contact with an inner side surface of the top surface of the cap, thereby closing the opening portion in a state where a central portion of the top portion of the protrusion portion is exposed. . The cover part of the elastic elastic member, when not releasing the fluid from the opening, covers the opening in close contact with the protrusion, and can prevent leakage of fluid from the opening, a container according to the fluid to claim 3 or 4 in the case of release is to permit release the fluid spaced from the protrusion from the opening from the opening. The side peripheral surface of the holder member is provided with an opening of the communication portion,
The resilient and elastic members, the container according to claim 1 or 2 has an annular structure for closing the opening in close contact with the holder member. When the elastic elastic member does not release the fluid from the opening, the elastic elastic member is in close contact with the holder member to cover the opening, thereby preventing leakage of the fluid from the opening, and allowing the fluid to flow. The container according to claim 6 , wherein when discharging from the opening, the fluid can be discharged from the opening by being separated from the holder member.

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