JP6397181B2 - Spout tool - Google Patents

Description

  The present invention relates to a spout tool used by being attached to a container that contains liquid contents.

  Conventionally, as a spout tool attached to an opening portion of a container such as a packaging bag, a spout tool configured to suppress the inflow of outside air into the container through a flow path formed inside is known. . For example, Patent Document 1 discloses a spout tool having a configuration in which a partition wall that can be easily broken is formed in a pouring part, and a flow path in the pouring part is closed by the partition wall. According to the spout tool of patent document 1, the flow of outside air into the container through the flow path of the pouring part can be suppressed by the presence of the partition wall in the pouring part. And by breaking the partition in the extraction part at the time of opening, the flow path of the extraction part is opened, and the contents can be extracted.

JP 2008-87786 A

  By the way, in the case of the spout tool of patent document 1, after breaking and opening the partition in an extraction part, a partition is removed from the flow path of an extraction part. Therefore, in the situation where the cap member such as the cap is removed from the spout tool as in the case where the spout is performed many times in a short time, the flow path of the spout section is left as it is. Through the outside air into the container.

  This invention is made | formed in view of such the conventional situation, The objective is to improve the inhibitory effect with respect to the inflow of external air through the flow path of a extraction part in a spout tool.

  In order to achieve the above object, the spout tool according to claim 1 is a spout tool used by being attached to a container for storing liquid contents, and has a flow path connected to the spout inside. A check valve for restricting the flow from the outlet side to the container side is provided in the flow path, and the check valve connects the flow path to the outlet side and the container. A partition wall section partitioned into a side wall, a film-shaped valve body which is disposed on the outlet side of the partition wall section and closes a flow passage formed through the partition wall section, and a further outlet of the valve body And a holding member that holds the valve body between the partition wall portion and the partition wall portion.

  According to the above configuration, when the contents are poured out, that is, when a pressure is applied to the valve body from the flow path of the partition wall by tilting the container to which the spout is attached, the valve body is displaced or deformed. As a result, the flow passage formed in the partition wall portion is in a state where it can be distributed in a limited manner. For this reason, even when the cap member is removed from the spout tool and the valve body is left as it is, as in the case of performing the pouring many times in a short time, the valve element can flow through the flow path. When the check valve in the closed state is present in the flow path of the extraction portion, the inflow of outside air through the flow path can be suppressed.

In the spout tool, the interval between the partition wall and the holding member is preferably set larger than the thickness of the valve body.
In this case, when the contents are poured out, the check valve is opened when the valve body is displaced from the partition wall portion side to the holding member side. When the check valve returns from the opened state to the closed state, that is, when the valve body returns from the displaced position to the original position, the contents enter between the valve body and the partition wall. Thereby, a liquid film of the contents is formed between the valve body and the partition wall. Since the liquid film formed between the valve body and the partition wall functions as a gas barrier layer, it is possible to more effectively suppress the inflow of outside air through the flow path of the extraction portion.

  According to the spout tool of the present invention, it is possible to improve the effect of suppressing the inflow of outside air through the flow path of the spout unit.

Sectional drawing of a spout tool. Bottom view of the lower part of the dispensing. The top view of a check valve. AA line sectional view of Drawing 3. Sectional drawing of the spout tool after an opening process. (A) is sectional drawing which shows the non-return valve before extraction, (b) is sectional drawing which shows the non-return valve at the time of extraction, (c) is sectional drawing which shows the non-return valve after extraction.

Hereinafter, the spout tool of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the spout tool 1 includes a spout portion 2 that forms a flow path therein. This extraction part 2 is comprised by combining the extraction lower part 10 and the extraction upper part 20 which are formed in a substantially cylindrical shape up and down.

  The pouring lower portion 10 constituting the lower portion of the pouring portion 2 is formed in a bottomed cylindrical shape including a cylindrical tube wall 11 and a closing wall 12 that closes the lower end of the tube wall 11. On the upper part of the outer peripheral surface (side surface) of the cylindrical wall 11, a male screw 11 a is provided as an engagement site for the dispensing upper part 20. An attachment portion 13 for attaching the spout tool 1 to the opening portion of the container projects from the lower portion of the outer peripheral surface of the cylindrical wall 11.

  As shown in FIGS. 1 and 2, the blocking wall 12 that closes the lower end of the cylindrical wall 11 is provided with a rupture guiding portion 12 a formed in a thin shape. The breakage guiding portion 12a is formed into a thin wall shape by forming a groove having a substantially V-shaped cross section from the upper surface (inner surface) side of the blocking wall 12, and the outer shape is a substantially circular shape (water droplet shape) partially bulged. It is formed in an annular shape. On the upper surface side of the inner position of the bulged portion in the breakage guiding portion 12a, a tension portion 14 is provided along a part of the breakage guiding portion 12a. The tension portion 14 includes a shaft body 14b extending upward from the blocking wall 12 and a ring-shaped gripping portion 14a formed at the upper end of the shaft body 14b.

  As shown in FIG. 1, the pouring upper portion 20 constituting the upper portion of the pouring portion 2 is formed in a covered cylindrical shape whose lower end side is opened and whose upper end side is closed by the upper wall 21. The upper wall 21 of the dispensing upper portion 20 is formed with a flat portion 22 on the outer peripheral side portion and a dome-like bulging portion 23 bulging upward at the center portion. A substantially cylindrical spout 24 is provided at the central position that is the apex of the bulging portion 23.

  On the inner peripheral surface of the dispensing upper portion 20, a female screw 25 is provided as an engaging portion for the dispensing lower portion 10. An annular support wall 26 centering on the spout 24 is provided on the lower surface (inner surface) of the bulging portion 23 in the upper wall 21. The support wall 26 is accommodated inside the gripping portion 14a of the tension portion 14 provided in the dispensing lower portion 10 when the male screw 11a of the dispensing lower portion 10 and the female screw 25 of the dispensing upper portion 20 are engaged. It is formed so that. The annular support wall 26 constitutes a part of the flow path connected to the spout 24, and a check valve 30 is attached in the support wall 26.

  As shown in FIGS. 3 and 4, the check valve 30 includes a dish-shaped case member 31 having an accommodating portion S formed on the upper surface side. The case member 31 includes a disk-shaped bottom wall 31a, a peripheral wall 31b standing along the outer periphery of the bottom wall 31a, and a flange 31c extending outward from the upper edge of the peripheral wall 31b. A housing portion S surrounded by the upper surface of the bottom wall 31a and the inner peripheral surface of the peripheral wall 31b is formed.

  The bottom wall 31a of the case member 31 is provided with a plurality of flow passages 32 penetrating the bottom wall 31a. Each flow passage 32 is provided such that an opening located on the upper surface side of the bottom wall 31a is formed at a position on the outer peripheral side of the bottom wall 31a. An annular first recess 33 surrounding the opening of each flow passage 32 is formed on the top surface of the bottom wall 31a, and an annular second recess 34 is formed along the outer periphery of the bottom wall 31a.

  A valve body 35 and a holding member 36 are accommodated in the accommodating portion S of the case member 31. The valve body 35 is a member made of a flexible film, and is formed in a circular shape having a diameter slightly smaller than the diameter of the upper surface of the bottom wall 31a. And the valve body 35 is arrange | positioned on the bottom wall 31a of the case member 31, and has block | closed the opening of each flow path 32 provided in the bottom wall 31a in the part of the outer peripheral side. In addition, as the valve body 35, it is a flexible film and a well-known liquid-impermeable film can be used. In particular, it is preferable to use a liquid-impermeable and gas-barrier film.

  The holding member 36 is a plate-like member having a shape in which both sides of a circle are cut out in an arc shape, and two protrusions extending from one end side to the other end side of the holding member 36 on both upper and lower surfaces thereof. 36a is provided. In the housing portion S of the case member 31, the holding member 36 is attached to the inner surface of the peripheral wall 31 b of the case member 31 so as to be positioned above the valve body 35. For example, two protrusions extending in the circumferential direction are provided on the inner surface of the peripheral wall 31b, and the outer peripheral portion of the holding member 36 is fitted between the protrusions, or a concave stripe extending in the circumferential direction is provided on the inner surface of the peripheral wall 31b. The holding member 36 is attached to the inner surface of the peripheral wall 31b by adopting a configuration such as fitting the outer peripheral portion of the holding member 36 into the concave strip. And the valve body 35 is hold | maintained by the upper part of the bottom wall 31a by the valve body 35 being pinched | interposed between the holding member 36 and the bottom wall 31a.

  As shown in FIG. 4, the mounting position of the holding member 36 with respect to the case member 31 is such that the distance between the tip of the protrusion 36 a and the bottom wall 31 a of the case member 31 is larger than the thickness of the valve body 35. Set to position. That is, there is a gap between the valve element 35 disposed on the bottom wall 31 a of the case member 31 and the tip of the protrusion 36 a of the holding member 36.

  As shown in FIG. 6, the check valve 30 is fixed to the inner peripheral surface of the support wall 26 provided on the dispensing upper portion 20 in the flange 31 c portion of the case member 31. Thereby, the flow path formed in the support wall 26 is divided into the spout 24 side and the container side by the case member 31 (partition wall part) of the check valve 30.

  In addition, as shown in FIG. 1, a cap portion 50 is attached to the dispensing upper portion 20 via a hinge 51. With the hinge 51 as a base point, the cap portion 50 rotates between a closed position that covers the bulging portion 23 of the upper wall 21 and an open position that exposes the bulging portion 23. An insertion protrusion 52 that is inserted into the spout 24 and closes the spout 24 when the cap 50 is positioned at the closed position is provided on the upper inner surface of the cap 50.

  A sheet-like gas barrier member 60 is attached to the lower surface of the dispensing lower portion 10. Specifically, the gas barrier member 60 is attached to the lower surface of the blocking wall 12, the lower end edge of the cylindrical wall 11, and the lower end edge of the attachment portion 13. As the gas barrier member 60, for example, a multilayer resin sheet having an aluminum foil layer, an ethylene vinyl-alcohol copolymer layer, a ceramic vapor deposition film layer, or the like as a gas barrier layer can be used. In addition, illustration of the gas barrier member 60 is abbreviate | omitted in FIG.

Next, the usage method of the spout tool 1 of this embodiment is described with the effect | action of this embodiment.
The spout tool 1 is used by being attached to an opening of a container (for example, a packaging bag formed in a bag shape with a resin sheet) that stores liquid contents. In the container to which the spout tool 1 is attached, the gas barrier member 60 attached to the lower surface of the spout lower part 10 suppresses the intrusion of outside air such as oxygen into the container through the spout tool 1.

  And the spout tool 1 is made into the state which can pour the content out of the container by performing the opening process described below. First, the pouring upper part 20 is rotated and the pouring upper part 20 and the cap part 50 are removed from the pouring lower part 10. Thereby, the holding part 14a of the tension | pulling part 14 will be exposed from the upper opening of the extraction | pouring lower part 10, and it will be in the state which can hold | grip the holding part 14a easily. And by grasping | ascertaining the grip part 14a and pulling upwards, the fracture | rupture induction | guidance | derivation part 12a of the obstruction | occlusion wall 12 and the gas barrier member 60 are torn, and the lower end of the extraction | pouring lower part 10 is opened. Then, the spout 1 is in the unsealed state shown in FIG. 5 by attaching the spout upper part 20 and the cap part 50 to the spout lower part 10.

  When the cap 50 of the spout tool 1 after opening is opened and the container is tilted, the contents in the container pass through the flow path in the pouring lower part 10 and are attached to the support wall 26 of the pouring upper part 20. The check valve 30 is reached. Then, the pressure of the contents (pouring pressure) acts on the valve element 35 through the flow passage 32 provided in the case member 31 of the check valve 30 (see FIG. 6A).

  6B, the valve body 35 is pushed by the contents, floats from the bottom wall 31a of the case member 31, and contacts the lower surface of the holding member 36 (the surface on the bottom wall 31a side). At the same time, the holding member 36 is bent into a circular arc shape along the shape of the lower surface. That is, two protrusions 36 a are provided at the central portion of the lower surface of the holding member 36. Therefore, the central portion of the valve body 35 that contacts the protrusion 36a of the holding member 36 has a small degree of lifting, and both side portions of the valve body 35 that do not contact the protrusion 36a have a high degree of lifting, so that the valve body 35 is As a whole, it is in a state of being bent into a circular arc shape that protrudes downward. Here, with reference to the ridge 36a provided on the holding member 36, the vicinity of the ridge 36a is described as a central portion, and both sides sandwiching the ridge 36a are described as both side portions.

  Further, since the flow passage 32 is provided on the outer peripheral side of the bottom wall 31a, a large discharge pressure acts on the valve body 35 on the outer peripheral side including the both side portions. Therefore, the valve body 35 is more strongly pressed to the holding member 36 toward the outer peripheral side including the both side portions, and is easily bent in a circular arc shape that protrudes downward.

  And the valve body 35 will be in the state bent while floating from the bottom wall 31a of the case member 31, the closed state with respect to opening of each flow path 32 by the valve body 35 will be eliminated, and the non-return valve 30 will be a container. It will be in the state (open state) where the passage of the contents from the side to the spout 24 side is permitted. As a result, the contents that have reached the check valve 30 pass through the flow passage 32, and between the valve body 35 and the bottom wall 31a of the case member 31, and between the valve body 35 and the peripheral wall 31b of the case member 31. Passing through, it is poured out from the spout 24.

  Further, as shown in FIG. 6C, when the container is returned from the tilted state to the original state, the discharge pressure of the contents acting on the valve body 35 through the flow passage 32 decreases, and the valve body 35 Attempts to return to the original state from the bent state while floating. At this time, the contents enter a gap formed between the valve body 35 floating from the bottom wall 31a toward the holding member 36 and the bottom wall 31a, and the liquid of the contents is interposed between the valve body 35 and the bottom wall 31a. A film M is formed. As a result, the opening of the flow passage 32 formed in the bottom wall 31a is doubly blocked by the liquid film M of the contents and the valve body 35, and oxygen or the like into the container through the flow passage 32 Intrusion of outside air is effectively suppressed.

Next, the effect of this embodiment will be described below.
(1) The spout tool 1 includes a spout portion 2 that forms a flow path connected to the spout 24 therein. A check valve 30 for restricting the flow from the spout 24 side to the container side is provided in the flow path. The check valve 30 is disposed on the case member 31 that partitions the flow path into the spout side and the container side, and on the spout 24 side of the case member 31, and closes the flow passage 32 that is formed through the case member 31. A film-like valve body 35 and a holding member 36 that is disposed on the outlet 24 side of the valve body 35 and holds the valve body 35 between the case member 31 are provided.

  According to the said structure, the flow path 32 provided in the case member 31 of the non-return valve 30 will be in the state which can distribute | circulate limitedly at the time of the extraction of the contents. Therefore, the valve body 35 is circulated even in a situation where the cap member such as the cap is removed from the spout 1 as in the case of performing the pouring many times in a short time. The presence of the check 30 valve in a state where the passage 32 is blocked is present in the flow path of the extraction portion 2, so that inflow of outside air through the flow path can be suppressed.

(2) Further, the check valve 30 including the film-like valve body 35 can be formed thin. Therefore, the enlargement of the spout tool 1 provided with the check valve 30 can be suppressed.
(3) The distance between the bottom wall 31 a of the case member 31 and the holding member 36 is set larger than the thickness of the valve body 35.

  According to the above configuration, after the contents are poured out, when the valve body 35 tries to return to the original state, the valve body 35 is lifted from the bottom wall 31a to the holding member 36 side, and between the bottom wall 31a. The contents enter the formed gap, and a liquid film M of the contents is formed between the valve body 35 and the bottom wall 31a. When the liquid film M functions as a gas barrier layer, the inflow of outside air through the flow path of the extraction unit 2 can be more effectively suppressed.

(4) On the upper surface of the bottom wall 31 a of the case member 31 (surface on the spout 24 side), a first recess 33 is formed around the opening portion of the flow passage 32.
According to the above configuration, after the contents are poured out, the contents are accommodated in the first recess 33, so that a certain amount is provided around the opening portion of the flow passage 32 between the valve body 35 and the bottom wall 31a. The contents of are secured. Therefore, the liquid film M can be suitably formed also in the opening part of the flow passage 32 which is a part where the contents flow to the container side.

(5) On the upper surface (surface on the spout 24 side) of the bottom wall 31a of the case member 31, a second recess 34 is formed along the outer periphery of the upper surface of the bottom wall 31a.
After the contents are poured out, if a large amount of contents remain between the both side portions of the bent valve body 35 and the bottom wall 31a of the case member 31, the valve body 35 is deformed from the bent state. It may be difficult to return to the state. According to the above configuration, the content remaining between the both side portions of the bent valve body 35 and the bottom wall 31a flows to the outer peripheral side and is accommodated in the second recess 34. It becomes easy to return from the bent state to the original state.

  In addition, this embodiment can also be changed and embodied as follows. Moreover, it is also possible to change the said embodiment like the structure of the combination of the following modification example mutually.

  The shape of the case member 31 constituting the check valve 30 can be changed as appropriate. For example, the outer shape of the case member 31 may be a shape that can partition the flow path in the support wall 26 into the spout 24 side and the container side when the case member 31 is attached to the support wall 26. The top view may be elliptical or polygonal. Further, the peripheral wall 31b and the flange 31c may be omitted. In this case, what is necessary is just to comprise so that the holding member 36 may be attached with respect to the bottom wall 31a. Further, the number and the position of the flow passages 32 formed on the bottom wall 31a of the case member 31 can be changed as appropriate. Moreover, you may abbreviate | omit one or both of the 1st recessed part 33 and the 2nd recessed part 34 which were provided in the bottom wall 31a.

  -The shape of the valve body 35 which comprises the non-return valve 30 can be changed suitably. For example, in the above embodiment, the valve body 35 made of a round film is adopted, but a valve body made of an elliptical film may be adopted, or a valve body made of a polygonal film is adopted. May be. Further, the bending shape of the valve body 35 when the valve body 35 is pressed against the lower surface of the holding member 36 is not particularly limited as long as the opening of the flow passage 32 is opened.

  -The shape of the holding member 36 which comprises the check valve 30 can be changed suitably. That is, the holding member 36 only needs to be configured to be able to hold the valve body 35 on the surface of the bottom wall 31a of the case member 31 on the spout 24 side, and the shape thereof is not particularly limited. For example, in the above-described embodiment, the protrusions 36a are provided on both the upper and lower surfaces in order to allow attachment without the front and back, but a configuration in which the protrusions 36a are provided only on one surface may be employed.

  Further, the configuration provided in the holding member 36 for bending the valve body 35 when the valve body 35 is pressed against the lower surface of the holding member 36 is not limited to the protrusion 36a. For example, if any inclination or unevenness is provided on the lower surface (surface on the container side) of the holding member 36 such that the central side is low and the both sides are high, the valve body 35 is bent as in the above embodiment. Is possible.

  In the above embodiment, the check valve 30 includes the case member 31 formed in a dish shape having the accommodating portion S on one side, the valve body 35 and the holding member 36 accommodated in the accommodating portion S of the case member 31. As a valve unit provided with, it was formed separately from the extraction part 2. Instead of this, a part of the check valve 30 may be formed integrally with the extraction portion 2. For example, instead of the case member 31, a partition wall portion that divides the flow path in the support wall 26 into the spout 24 side and the container side with respect to the support wall 26 of the pouring upper portion 20 is formed integrally. It can also be set as the structure which attaches the valve body 35 and the holding member 36 to the spout 24 side of a division wall part.

  In the above embodiment, the valve body 35 of the check valve 30 is bent while being lifted from the bottom wall 31a of the case member 31, so that the closed state of the opening of each flow passage 32 by the valve body 35 is eliminated. Was configured to. Instead, the closed state of the opening of each flow passage 32 by the valve body 35 is canceled only by the valve body 35 floating (displaced) from the bottom wall 31a or by being bent. You may comprise as follows.

  For example, when the protrusion 36a of the holding member 36 is omitted and the lower surface of the holding member 36 is formed in a flat shape, the valve body 35 is lifted from the bottom wall 31a, and only the flow passages 32 of the valve body 35 are formed. It becomes the structure by which the obstruction | occlusion state with respect to opening is eliminated. In this case, a low flexibility film can be used as the valve body 35. Further, when the distance between the tip of the protrusion 36a of the holding member 36 and the bottom wall 31a is set to be approximately equal to the thickness of the valve body 35, the valve body 35 is only bent and the valve body 35 is bent. It becomes the structure by which the obstruction | occlusion state with respect to opening of each flow path 32 by the body 35 is eliminated.

  -The extraction | pouring part 2 may be formed from one member, and may be comprised so that isolation | separation and an assembly | attachment can be carried out to three or more some members. Moreover, although the cap part 50 was attached to the extraction | pouring upper part 20 via the hinge 51, it is good also considering the extraction | pouring upper part 20 itself as a covered cylindrical cap. Furthermore, you may make it attach a cap part to the extraction | pouring lower part 10 via a hinge.

-One or both of the blocking wall 12 and the gas barrier member 60 may be omitted. In addition, when the closing wall 12 is omitted, the tension portion 14 provided on the closing wall 12 is also omitted.
-The spout tool 1 is applicable not only to the container formed in the bag shape with the resin sheet but to various containers, such as a paper container. In that case, it cannot be overemphasized that the attachment part 13 can be suitably changed according to the form of a container.

Next, the technical idea that can be grasped from the embodiment and the modified examples will be described.
(B) When the check valve acts on the valve body through the flow passage, the check valve displaces the valve body toward the holding member, thereby allowing the check valve to flow from the container side to the spout side. The spout tool configured to allow.

  (B) The check valve is configured to allow flow from the container side to the spout side by bending the valve body when a pouring pressure acts on the valve body through the flow passage. The spout tool being made.

(C) The spout tool in which a first recess is formed around the opening portion of the flow passage on the spout side surface of the partition wall.
(D) The spout tool in which a second recess is formed along the outer periphery of the surface of the partition wall on the spout side.

  DESCRIPTION OF SYMBOLS 1 ... Outlet tool, 2 ... Outlet part, 10 ... Lower part of extraction, 20 ... Upper part of extraction, 24 ... Outlet, 26 ... Support wall, 30 ... Check valve, 31 ... Case member (partition wall part), 32 ... Flow passage, 35 ... Valve body, 36 ... Holding member.

Claims (1)

A spout tool used by being attached to a container containing liquid contents,
It has a pouring part that forms a flow path connected to the pouring outlet inside,
In the flow path, a check valve for restricting the flow from the outlet side to the container side is provided,
The check valve is
A partition wall section that partitions the flow path into a spout side and a container side;
A film-like valve element that is disposed on the outlet side of the partition wall and closes a plurality of flow passages formed through the partition wall; and
A holding member that is disposed further on the outlet side of the valve body and holds the valve body with the partition wall portion;
The surface on the outlet side of the partition wall is provided with a recess for accommodating the contents,
The spout tool, wherein the concave portion is a first concave portion formed around each of the opening portions of the plurality of flow passages.