JP2022094483A - Spout and bag container with spout - Google Patents

Abstract

To prevent content fluid from leaking when refilling the content fluid.SOLUTION: A spout is mounted on a container storing content fluid, which has a flow passage for content fluid formed therein, and comprises: a fluid leakage preventing mechanism for content fluid. The fluid leakage preventing mechanism has a movable valve that is displaced in a direction opposite to a pouring-out direction of content fluid in response to pressure applied thereto to form the flow passage for the content fluid; and a ring part arranged closer to a downstream side than the movable valve with respect to the pouring-out direction, and shutting off pouring-out of the content fluid together with the movable valve, when the pressure is not applied to the movable valve and therefore the valve is not displaced, where the applied pressure is pressure applied to the movable valve from the outside of the spout.SELECTED DRAWING: Figure 1

Description

The present invention relates to a spout, and more particularly to a spout having a liquid leakage prevention mechanism for the content liquid.

In the above technical field, Patent Document 1 states that when the contents are poured from the packaging bag to the container, the contents are displaced only in the pouring direction of the contents in order to prevent the contents from vigorously popping out from the tilted packaging bag. A flow path forming member (spout) with a possible movable valve (check valve) is disclosed.

Japanese Unexamined Patent Publication No. 2018-131243

In the spout described in Patent Document 1, the content liquid flows out from the moment the bag container is lifted and tilted in order to fill the refill container with the content liquid. Therefore, if the bag container cannot be moved properly, the refillable container may be contaminated with the content liquid. Further, even when the user strongly grips the body of the bag container, the content liquid overflows from the bag container, and there is a possibility that the surroundings are similarly contaminated.

Therefore, the present invention relates to a spout that can prevent liquid leakage from the bag container when refilling the content liquid of the refillable container.

The present invention is a spout that is attached to a container in which a content liquid is housed, forms a flow path for the content liquid, and has a liquid leakage prevention mechanism for the content liquid, wherein the liquid leakage prevention mechanism is a pressure applied. A movable valve that is displaced in a direction opposite to the pouring direction of the content liquid according to the above to form a flow path of the content liquid, and is arranged above the movable valve with respect to the pouring direction. With respect to the spout, which has a ring portion that shuts off the flow path when the movable valve is not displaced, the applied pressure is the pressure applied to the movable valve from outside the spout.

According to the spout of the present invention, it is possible to prevent liquid leakage when refilling the content liquid.

It is (a) the sectional view before forming a channel, and (b) the sectional view after forming a channel of the spout which concerns on 1st Embodiment of this invention. It is (a) perspective view, (b) top view, (c) side view, (d) bottom view for demonstrating the appearance shape of the spout which concerns on 1st Embodiment of this invention. It is (a) perspective view, (b) top view, (c) side view, (d) AA line sectional view, (e) bottom view of the holder of the spout which concerns on 1st Embodiment of this invention. It is (a) perspective view, (b) top view, (c) side view, (d) AA sectional view, (e) bottom view of the movable valve of the spout which concerns on 1st Embodiment of this invention. It is (a) perspective view, (b) top view, (c) side view, (d) AA line sectional view, (e) bottom view of the spout ring which concerns on 1st Embodiment of this invention. It is (a) the sectional view before forming a channel, and (b) the sectional view after forming a channel of the spout which concerns on 1st Embodiment of this invention. It is (a)-(d) perspective view which shows an example of the container to which the spout which concerns on 1st Embodiment of this invention is attached. It is a figure which shows an example of the method of injecting a content liquid into a refill container using the spout which concerns on 1st Embodiment of this invention. (A) perspective view showing an example of a refillable container in which the content liquid is refilled using the spout according to the first embodiment of the present invention, and (b) perspective view, (c) of the spout of the refillable container. It is a side view and (d) a top view. It is a figure which shows another example of the method of injecting a content liquid into a refill container using the spout which concerns on 1st Embodiment of this invention. It is (a)-(b) side view which shows an example of the pouring part which can be attached to the spout which concerns on 1st Embodiment of this invention. It is (a) the sectional view before forming a channel, and (b) the sectional view after forming a channel of the spout which concerns on 2nd Embodiment of this invention. It is (a) perspective view, (b) side view, (c) top view of the position regulation part of the spout which concerns on 2nd Embodiment of this invention. It is (a) the sectional view before forming a channel, and (b) the sectional view after forming a channel of the spout which concerns on 3rd Embodiment of this invention. It is (a) side view and (b) top view of the holder of the spout which concerns on 3rd Embodiment of this invention.

[First Embodiment]
Next, the spout according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 11. First, the spout 20 will be described with reference to FIGS. 1 to 6.

As shown in FIGS. 1 and 2, the spout 20 has a base portion 20a, a male screw portion 20b, a tubular portion 20c, and an opening portion 20d. The tubular portion 20c is a cylindrical member erected from the base portion 20a toward the pouring direction 22, and corresponds to the body portion of the spout 20. Two male threaded portions 20b are provided on the downstream side of the outer peripheral surface of the tubular portion 20c in the pouring direction 22, but the number of threads is not limited to this. The spout 20 is, for example, a member attached to a pouring portion of a bag-shaped container (bag container) and forming a flow path for pouring out the content liquid contained in the bag-shaped container. The opening 20d is a pouring outlet for the content liquid, is provided at the most downstream position in the pouring direction of the tubular portion 20c, and is open to the outside. The content liquid passes through the space inside the tubular portion 20c and is poured out from the opening 20d in the pouring direction 22. The base portion 20a is arranged on the top surface side of the bag-shaped container, and is inserted and fixed between the front side film and the back side film of the top surface portion, for example.

Further, a male screw portion 20b is provided on the outer peripheral surface of the spout 20, and the female screw portion provided on the inner peripheral surface of the overcap meshes with the male screw portion 20b to cover the spout 20. .. That is, the overcap is a member that is screwed to the spout 20 and has a sealing surface portion that is in close contact with the spout 20 and seals, and is a member used for opening or closing the spout. Is. When using the content liquid contained in the container, remove the overcap and pour out the content liquid. When the pouring of the content liquid is completed, the overcap is closed to close the spout 20 spout.

The spout 20 has a liquid leakage prevention mechanism 21. That is, the spout 20 has a mechanism for preventing liquid leakage on the flow path of the content liquid contained in the bag-shaped container. The liquid leakage prevention mechanism 21 has a movable valve 21a and a ring portion 21b.

The movable valve 21a and the ring portion 21b are housed inside the holder 27. The holder 27 is a tubular member having an open top surface portion (open top plate portion) and provided with a circular hole portion penetrating through a part of the bottom surface portion (see FIG. 3 and the like). The movable valve 21a is placed on the inner bottom surface portion inside the holder 27. Then, the ring portion 21b is placed on the movable valve 21a. That is, the movable valve 21a and the ring portion 21b are arranged in the order of the movable valve 21a and the ring portion 21b from the bottom surface portion side of the holder 27.

Further, the holder 27 has a flange portion 27a for positioning the ring portion 21b at a predetermined position on at least a part of the inner peripheral surface. The flange portion 27a is provided on the discharge direction side with respect to the ring portion 21b, thereby restricting the ring portion 21b from moving to the discharge direction side. The flange portion 27a is a protruding portion protruding from the surface of the inner peripheral surface of the holder 27 in the radial direction of the holder 27, and is a raised portion having an arch shape (a part of an arc) in a cross-sectional view. be. The flange portion 27a is provided at a height position equal to the total thickness of the movable valve 21a and the ring portion 21b from the bottom surface portion of the holder 27. By providing the flange portion 27a at such a height position, the movable valve 21a and the ring portion 21b are housed inside the holder 27 without any gap. Here, the outer diameters of the movable valve 21a and the ring portion 21b are the same as or smaller than the inner diameter of the holder 27.

Inside the holder 27, the ring portion 21b is arranged directly below the flange portion 27a. By arranging it directly under the flange portion 27a, the ring portion 21b can move or be positioned inside the holder 27 even when vibration or the like is applied to the spout 20 or the spout 20 is turned upside down. Will not shift. That is, when the ring portion 21b tries to move inside the holder 27, it is caught by the flange portion 27a and the movement of the ring portion 21b is restricted. By limiting the movement of the ring portion 21b, the movement of the movable valve 21a inside the holder 27 is also indirectly restricted.

Next, the holder 27 has a claw leg portion 27b as shown in FIGS. 1 and 3. The claw leg portion 27b is an elongated rod-shaped member protruding from the outer bottom surface portion of the holder 27 toward the outside of the holder 27, and the key is located at the tip portion on the opposite side (vertically downward) from the bottom surface portion of the holder 27. It is a member provided with claws. Then, when the holder 27 is inserted into the hole provided in the bottom surface portion of the spout 20, the key claw portion of the key claw leg portion 27b is locked so as to be hooked on the outer bottom surface portion of the base portion 20a of the spout 20. , The holder 27 is fixed inside the spout 20. In this way, when the key claw leg portion 27b is locked to the spout 20, the key claw resists the force of pulling the holder 27 in the pouring direction 22, so that the holder 27 does not come off from the spout 20. It has become like. Although three key claw leg portions 27b are provided here at equal intervals on the outer bottom surface portion, the number of key claw leg portions 27b is not limited to this.

As shown in FIG. 4, the movable valve 21a has a central valve body 21c, a connection support portion 21d, and a peripheral portion 21e. The movable valve 21a is a circular member having a predetermined thickness. The central valve body 21c is a circular member arranged in the central portion of the circular movable valve 21a and surrounded by the peripheral edge portion 21e, and is thinner than the peripheral edge portion 21e. Further, the peripheral edge portion 21e is a member having an annular shape. The central valve body 21c is displaced in the direction 23 opposite to the pouring direction 22 of the content liquid according to the pressure applied to the movable valve 21a. When the central valve body 21c is displaced, the flow path 24 of the content liquid is formed as shown in FIG. 1 (b). The central valve body 21c and the peripheral edge portion 21e are connected by a connection support portion 21d described later, but a gap is formed between the central valve body 21c and the peripheral edge portion 21e (see FIG. 4). This gap is closed by the ring portion 21b when the central valve body 21c is not displaced (see FIG. 1 and the like).

Here, the pressure applied to the central valve body 21c of the movable valve 21a is a positive pressure 25 applied to the central valve body 21c from the outside of the spout 20, or a negative pressure 26 applied to the central valve body 21c from the inside of the bag-shaped container. Is. The positive pressure 25 applied to the central valve body 21c is, for example, a force that physically pushes the central valve body 21c in the opposite direction 23. The positive pressure 25 is a pressure applied by pushing the central valve body 21c with, for example, a rod-shaped member or a user's finger. Further, the negative pressure 26 applied to the central valve body 21c is a large pressure applied by, for example, an exhaust mechanism provided in a bag-shaped container for reducing the internal pressure (in other words, a large pressure applied to the central valve body 21c). Atmospheric pressure).

As shown in FIG. 4, the ring portion 21b is a donut-shaped member having a hole portion in the center. It is a member that shuts off the flow path 24 in a state where pressure is not applied to the central valve body 21c (a state in which the central valve body 21c is not displaced). That is, inside the holder 27, the movable valve 21a is arranged on the upstream side and the ring portion 21b is arranged on the downstream side with respect to the pouring direction 22 of the content liquid. Therefore, when no pressure is applied to the movable valve 21a, the blocking portion 21f of the ring portion 21b is located directly above the gap formed between the central valve body 21c and the peripheral portion 21e to close the gap. Therefore, the flow path 24 (pouring of the content liquid) is blocked.

The central valve body 21c is connected to the peripheral edge portion 21e of the movable valve 21a by three connection support portions 21d (see FIG. 4 and the like). The connection support portion 21d is an elongated and thin rod-shaped member, and has a Z-shape. The connection support portion 21d is connected to the central valve body 21c and the peripheral edge portion 21e by connecting one end to the central valve body 21c and the other end to the peripheral edge portion 21e.

When pressure is applied to the central valve body 21c, the central valve body 21c is displaced in the opposite direction 23 by an amount corresponding to the applied pressure. Due to the displacement of the central valve body 21c, a flow path 24 through which the content liquid flows is formed between the central valve body 21c and the peripheral portion 21e. That is, a connection support portion 21d is provided between the central valve body 21c and the peripheral edge portion 21e, but a gap is formed in the portion where the connection support portion 21d does not exist, and the flow path is formed by this gap. Part of 24 is formed.

The connection support portion 21d is a member (flexible member) having an elastic function, and is a straight line extending from one end of the arc and the arc toward the peripheral edge portion 21e and from the other end of the arc toward the central valve body 21c. It has a shape that is combined with an extended straight line. In this way, of the connection support portion 21d, the portion connected to the peripheral edge portion 21e (straight line portion on one end side) and the portion connected to the central valve body 21c (straight line portion on the other end side) are arranged separately. By doing so, the displacement amount of the connection support portion 21d as a whole can be increased. The shape of the connection support portion 21d is not limited to the shape shown here, and any shape can be used as long as the central valve body 21c and the peripheral edge portion 21e can be connected and the central valve body 21c can be supported. You may. For example, it may have a shape consisting of four straight lines extending from each of the positions where the peripheral edge portion 21e is divided into four equal parts toward the center of the central valve body 21c. The central valve body 21c is displaced within the elastic region of the connection support portion 21d. When the connection support portion 21d is displaced by applying pressure to the central valve body 21c, the connection support portion 21d elastically deforms in a form of being dragged by the displacement of the central valve body 21c, and while supporting the central valve body 21c, the central valve body 21c Limit the range of motion. When the pressure applied to the central valve body 21c is removed, the central valve body 21c returns to its original position due to the elastic force of the connection support portion 21d. That is, the central valve body 21c moves in the pouring direction 22 and finally returns to the original position. Here, from the viewpoint of the displacement amount (range of motion) of the central valve body 21c, the shape of the connection support portion 21d may be a combination of the arc and the two straight lines shown in FIG. 4 to increase the displacement amount. It is advantageous because it can be done.

When the central valve body 21c is displaced beyond the range of the elastic region of the connection support portion 21d, that is, beyond the elastic limit, the connection support portion 21d is difficult to return to its original position due to plastic deformation. Even if the central valve body 21c, the connection support portion 21d and the peripheral portion 21e are all made of the same material, the connection support portion 21d is formed of an elastic member, and the central valve body 21c and the peripheral portion 21e are other. It may be formed of a member.

Further, as shown in FIG. 6, the spout 20 may not have the holder 27. That is, in the spout 20 shown in FIG. 6, the liquid leakage prevention mechanism 21 includes a movable valve 21a and a ring portion 21b, and the movable valve 21a is displaced as described above when the content liquid is refilled. It is possible to prevent liquid leakage.

Next, with reference to FIGS. 7 to 11, a container to which the spout 20 is attached, a method of using the spout 20, and the like will be described. As an example of the container 28 to which the spout 20 is attached, as shown in FIG. 7, a self-standing standing pouch 28a, a bottle-shaped pouch 28b in which the pouch itself functions as a bottle, a liquid or the like inside an outer container such as a cardboard case, etc. There is a container 28 such as a bag-in-box (BIB) 28c for accommodating and using a plastic inner container filled with a container whose body is deformable. In the case of these containers 28, the spout 20 is attached to the film by welding or the like. Then, for example, in the case of the standing pouch 28a or the bottle-shaped pouch 28b, when the user grasps the body portion with the overcap open, the content liquid unintentionally overflows. Similarly, when the user inverts the container in order to transfer the content liquid to the refillable container with the overcap open, the content liquid may flow out more than expected. When the spout 20 is attached to these containers, the central valve body 21c of the movable valve 21a does not displace even when the pressure from the inside of the container toward the pouring direction 22 acts, so that the flow path 24 remains blocked. Therefore, when the spout 20 is attached to these containers and used, the content liquid does not unintentionally overflow or the content liquid does not flow out more than expected. In addition to this, the spout 20 may be attached to the paper pack 28d. In each container, the spout 20 is attached to and used at the pouring portion of each container as shown by the dotted line.

Next, a usage situation of the spout 20 will be described with reference to FIGS. 8 and 9. The refill container 29 into which the content liquid contained in the container to which the spout 20 is attached can be refilled is, for example, a detergent bottle, a shampoo bottle, a body soap bottle, a cosmetic bottle such as lotion or milky lotion, or the like. There may be, and it is not limited to these.

An inner plug 29b is attached to the pouring portion 29a of the refill container 29. As shown in FIG. 9, the inner plug 29b is a circular tubular member, and six rod-shaped members extending radially from the center are provided on the bottom surface portion, and the rod-shaped member extending vertically upward from the center. A valve body opening member 29c is provided. The inner plug 29b is attached when the refill container 29 is refilled, and is removed as needed at other times. The content liquid filled in the refill container 29 is poured out from the gaps of the rod-shaped members extending radially. Further, the shape of the body of the refill container 29 is a rectangular parallelepiped shape, but the shape of the body may be any shape.

Then, the user grips and lifts the body portion of the bottle-shaped pouch 28b to which the spout 20 is attached, and gradually tilts the bottle-shaped pouch 28b so that the bottom surface portion is at a position higher than the top surface portion. Then, the spout 20 is brought closer to the valve body opening member 29c of the inner plug 29b, and the spout 20 is further brought closer to the inner plug 29b so that the valve body opening member 29c enters the inside of the spout 20. When the spout 20 is brought close to the inner plug 29b, the valve body opening member 29c comes into contact with the central valve body 21c of the movable valve 21a of the spout 20 and pushes the central valve body 21c inward. As described above, when the central valve body 21c is pushed by the valve body opening member 29c, the central valve body 21c is displaced, the flow path 24 is formed, and the content liquid contained in the bottle-shaped pouch 28b is the spout 20. Flow out from. When the user fills the refill container 29 with all or the required amount of the content liquid contained in the bottle-shaped pouch 28b and moves the spout 20 away from the inner plug 29b, the user can move the spout 20 from the inner plug 29b to the center by the valve body opening member 29c. The pressure applied to the valve body 21c is released, the central valve body 21c returns to the original position, the flow path 24 is blocked by the central valve body 21c and the ring portion 21b, and the outflow of the content liquid is stopped. Therefore, the user can easily and quickly perform the refilling work of the content liquid without worrying about the liquid leakage.

The spout 20 can also be used for refilling the content liquid of the refill container 30 shown in FIG. The refill container 30 is a container that is loaded and used in a washing machine, a dishwasher, or the like. The refill container 30 has a structure in which the inner plug 29b described with reference to FIGS. 8 and 9 is attached to the concave bottom portion of the recess, which is one step lower than the top surface portion and is provided on the top surface portion. There is. Since the method of using the spout 20 is the same as the example shown in FIGS. 8 and 9, details are omitted.

Next, with reference to FIG. 11, a member that displaces the central valve body 21c, which is different from the valve body opening member 29c described with reference to FIGS. 8 to 10, will be described. As shown in FIG. 11A, the trigger type dispenser 31 may be attached to the container 28. A dip tube 31a is attached to the trigger type dispenser 31, which plays the same role as the valve body opening member 29c shown in FIGS. 8 to 10. That is, when the trigger type dispenser 31 is attached to the container 28 to which the spout 20 is attached, the dip tube 31a pushes the central valve body 21c in the opposite direction 23 and displaces the central valve body 21c, so that the flow path 24 is opened. It is formed. The liquid content in the pouch rises beyond the pushed central valve body 21c, and the tip of the dip tube 31a reaches the liquid level. Then, when the user pulls the trigger of the trigger type dispenser, the content liquid is sucked up from the dip tube 31a and sprayed. As described above, even if the content liquid in the pouch is sucked, the air does not enter the pouch, so that the pouch shrinks as the content liquid is sucked, and the liquid level of the content liquid does not change significantly. Similarly, as shown in FIG. 11B, the lever type dispenser 32 can be attached to the container 28 for use. Similar to the trigger type dispenser 31, the dip tube 32a attached to the lever type dispenser 32 pushes the central valve body 21c in the opposite direction and displaces the central valve body 21c, so that the flow path 24 is formed and the content liquid is formed. Is sprayed.

According to the present embodiment, since the liquid leakage prevention mechanism including the movable valve and the ring portion is provided inside the spout, the liquid leakage can be reliably prevented with a simple configuration.

[Second Embodiment]
Next, the spout 40 according to the second embodiment of the present invention will be described with reference to FIGS. 12 and 13. The spout 40 according to the present embodiment is different from the first embodiment in that it further has a position regulating unit 41.

The spout 40 further includes a position regulating unit 41. The position restricting portion 41 is a member arranged inside the holder 27 directly above the bottom surface portion of the holder 27. That is, inside the holder 27, each member is arranged in the order of the position regulating portion 41, the movable valve 21a, and the ring portion 21b from the bottom surface portion side.

The position regulating portion 41 is a ring-shaped member, and as shown in FIG. 13, four regulating arm portions 41a extend from the inner peripheral surface of the position regulating portion 41 toward the inside in the radial direction (center of the ring). Has been done. A protrusion 41b is provided at the tip of the upper surface of the regulation arm portion 41a on the opposite side of the inner peripheral surface, and the protrusion 41b protrudes in the pouring direction 22. The protrusion 41b has a rectangular parallelepiped shape, and the four sides of the top surface are chamfered. Then, when the position regulating portion 41 is viewed from the side, the protrusion 41b protrudes from the upper surface portion of the ring-shaped position regulating portion 41 toward the pouring direction 22. By changing the height of the protrusion 41b, the displacement amount of the central valve body 21c can be controlled. Although the example in which the position regulating unit 41 has four regulating arm portions 41a is shown, the number of the restricting arm portions 41a is not limited to this, and may be one to three, five or more.

Then, when pressure is applied to the central valve body 21c of the movable valve 21a, the central valve body 21c has a direction opposite to the injection direction 22 (positive pressure 25 or negative pressure 26) as shown in FIG. 12 (b). Displaces in the direction in which is applied). However, when the central valve body 21c is displaced in the direction opposite to the pouring direction 22, it comes into contact with the protrusion 41b of the position restricting portion 41 and cannot be further displaced. As a result, it is possible to prevent the connection support portion 21d from breaking due to the central valve body 21c being displaced too much in the direction opposite to the pouring direction 22. That is, by providing the position restricting portion 41, the central valve body 21c is displaced within the elastic region of the connecting support portion 21d.

According to the present embodiment, since the central valve body is not displaced beyond the elastic limit of the connection support portion, the liquid leakage prevention mechanism is not damaged and the liquid leakage can be reliably prevented.

[Third Embodiment]
Next, the spout according to the third embodiment of the present invention will be described with reference to FIGS. 14 and 15. The spout according to the present embodiment is different from the first embodiment and the second embodiment in that the holder is provided with a position restricting portion.

The spout 50 includes a holder 57. The holder 57 is a member housed inside the spout 50 and holds the movable valve 21a and the ring portion 21b. The holder 57 has a position restricting portion 57a. The position limiting portions 57a are provided at equal intervals along the outer periphery of the holes provided in the inner bottom surface portion of the holder 57. The position restricting portion 57a is a protrusion (protrusion) protruding from the surface of the inner bottom surface portion of the holder 57 toward the pouring direction 22. By changing the height of the protrusion of the position regulating portion 57a, the displacement amount of the central valve body 21c can be controlled.

Then, when pressure is applied to the central valve body 21c of the movable valve 21a, the central valve body 21c is displaced in the direction opposite to the pouring direction 22 as shown in FIG. 14 (b). However, when the central valve body 21c is displaced in the direction opposite to the pouring direction 22, it comes into contact with the position regulating portion 57a and cannot be displaced any further. As a result, it is possible to prevent the central valve body 21c from being difficult to return to its original position due to plastic deformation of the connection support portion 21d due to excessive displacement in the direction opposite to the pouring direction 22. That is, by providing the position restricting portion 57a, the central valve body 21c is displaced within the elastic region of the connecting support portion 21d.

According to this embodiment, the displacement amount of the central valve body can be controlled with a simpler configuration, and the breakage of the connection support portion can be effectively prevented.

Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above-described embodiments and can be appropriately modified. Various modifications that can be understood by those skilled in the art can be made to the structure and details of the present invention within the scope of the present invention. In addition, spouts in which different features contained in each embodiment are combined are also included in the scope of the present invention.

20 Spout 20a Base 20b Male thread 20c Cylinder 20d Opening 21 Liquid leakage prevention mechanism 21a Movable valve 21b Ring 21c Central valve body 21d Connection support 21e Peripheral 21f Blocking 22 Injection direction 23 Opposite direction 24 Flow path 25 Positive pressure 26 Negative pressure 27 Holder 27a Flange 27b Key claw leg 28 Container 28a Standing pouch 28b Bottle shape pouch 28c Bag-in-box 28d Paper pack 29 Refill container 29a Injection part 29b Inner plug 29c Valve body opening member 30 Refill container 31 Trigger type dispenser 31a Dip tube 32 Lever type dispenser 32a Dip tube 40 Spout 40a Base 40b Male screw part 41 Position regulation part 41a Restriction arm part 41b Protrusion 50 Spout 57 Holder 57a Position regulation part

Claims (8)

A spout that is attached to a container that houses the content liquid, forms a flow path for the content liquid, and has a liquid leakage prevention mechanism for the content liquid.
The liquid leakage prevention mechanism is
A movable valve that is displaced in the direction opposite to the pouring direction of the content liquid according to the applied pressure to form a flow path of the content liquid.
A ring portion arranged on the downstream side of the movable valve with respect to the pouring direction and blocking the pouring of the content liquid together with the movable valve when the pressure is not applied and the movable valve is not displaced.
Have,
The pressure applied is a pressure applied to the movable valve from the outside of the spout, the spout. The movable valve is
A central valve body that displaces in the opposite direction in response to the pressure,
A peripheral portion arranged so as to surround the central valve body, and
At least one connection support portion that connects the central valve body and the peripheral portion and supports the central valve body, and
Have,
The flow path is formed between the central valve body and the peripheral portion due to the displacement of the central valve body.
The spout according to claim 1, wherein the central valve body is displaced within the elastic region of the connection support. The spout according to claim 2, further comprising a cylindrical holder that internally accommodates and holds the movable valve and the ring portion. The spout according to claim 2 or 3, further comprising a position regulating portion which is arranged on the upstream side of the movable valve with respect to the pouring direction and regulates the displacement of the central valve body. The spout according to claim 4, wherein the position restricting portion is formed on the inner bottom surface portion of the holder. The spout according to any one of claims 3 to 5, wherein the holder has a flange portion for positioning the ring portion at a predetermined position on at least a part of the inner peripheral surface. A bag container with a spout provided with the spout according to any one of claims 1 to 6. The bag container with a spout according to claim 7, wherein the bag container is a standing pouch, a bottle-shaped pouch, a bag-in-box, or a paper pack.

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