WO2018168281A1

WO2018168281A1 - Cap equipped with slit valve

Info

Publication number: WO2018168281A1
Application number: PCT/JP2018/004590
Authority: WO
Inventors: 哲人宮崎; 夏生桝屋; 吉弘　憲司; 本田　哲也
Original assignee: 東洋製罐株式会社
Priority date: 2017-03-17
Filing date: 2018-02-09
Publication date: 2018-09-20
Also published as: CN110366527B; JP6859777B2; JP2018154372A; CN110366527A

Abstract

In this cap equipped with a slit valve, a cap main body (2) is formed so as to comprise the following: a pour spout (25) that opens above a slit valve (5) and that has a raised cylindrical shape; an edge frame (24) that protrudes outward from the base end of the pour spout (25) and covers the circumferential edge side of the top (5a) of the slit valve (5); and a side wall (23) that extends downward along the outer circumferential edge of the edge frame (24) and surrounds the side surface of the slit valve (5). The slit valve (5) is inserted in and attached to a recess defined by the side wall (23) and the edge frame (24). This configuration makes it possible to return contents remaining above the valve to the interior of the container without the contents dripping out from the valve circumferential edge when pouring the contents regardless of the cutting position of the slit.

Description

Cap with slit valve

The present invention relates to a cap with a slit valve provided with a slit valve made of an elastic material having a slit formed at the top.

Conventionally, a cap with a slit valve provided with a slit valve made of an elastic material having a cross-shaped slit formed at the top is known (see Patent Document 1).

Such a cap with a slit valve is used, for example, by being attached to the mouth of a squeezable container, and when the internal pressure is increased by squeezing the container with the mouth side down, the contents open the slit. In this manner, the slit is closed when the force for squeezing the container is loosened. Accordingly, an appropriate amount of contents can be discharged by adjusting the force for squeezing the container.

JP 2002-347813 A

By the way, in Patent Document 1, by attaching a slit valve to the cap body so that one of the slit cuts orthogonal to the cross shape matches the direction in which the container is tilted when discharging the content, I'm trying to improve the drainage when discharging.

However, the cap with a slit valve proposed in Patent Document 1 says that when the slit closes, the contents present at the valve tip end are sucked into the container, so that the liquid runs out (paragraph of Patent Document 1). [0013]), no device has been made to prevent the contents from dripping from the periphery of the valve. If the dropped contents are not sucked into the container and remain around the periphery of the valve or around the slit, it is unsanitary, and the appearance is not preferable.

In addition, the cap with a slit valve of Patent Document 1 not only requires complicated labor for positioning the slit, but also the user does not always tilt the container in a fixed direction, so he tries to obtain it. The effect cannot be expected. Furthermore, although it has been proposed to provide a mark indicating the direction in which the container is tilted (see paragraph [0018] of Patent Document 1), it is left to the user's recognition.

The present invention has been made in view of the circumstances as described above, and when the contents are poured out, the contents remain on the valve without dripping down from the periphery of the valve. An object of the present invention is to provide a cap with a slit valve that can be collected in a container regardless of the slit cutting position.

A cap with a slit valve according to the present invention is a cap with a slit valve provided with a cap body to which a slit valve made of an elastic material having a slit formed at the top is attached, and an upper lid detachable from the cap body, The cap main body opens above the slit valve, and rises in a cylindrical shape, and an edge frame that projects outward from the base end of the spout part and covers the peripheral side of the top of the slit valve And a side wall portion that hangs down along the outer peripheral edge of the edge frame portion and surrounds the side surface of the slit valve.

According to the present invention, when the content is poured out, the content discharged from the slit valve can be poured out from the spout portion while remaining in the spout portion. At that time, since the peripheral edge side of the top part of the slit valve is covered with the edge frame part, the contents do not spill outside from the peripheral edge of the valve. Moreover, the content remaining in the spout after the pouring can be easily drawn from the slit of the slit valve and can be recovered in the container regardless of the slit cutting position.

It is a top view which shows the outline of the cap with a slit valve which concerns on embodiment of this invention. FIG. 2 is a cross-sectional view taken along the line AA in FIG. It is a top view which shows the outline of the cap with a slit valve which concerns on embodiment of this invention. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is a perspective view which shows an example of a slit valve. It is a perspective view which shows an example of a sealing body. FIG. 3 is an enlarged view of a main part of FIG. 2.

Hereinafter, an embodiment of a cap with a slit valve according to the present invention will be described with reference to the drawings.

The cap 1 according to the present embodiment is an example in which the present invention is applied to a so-called hinge cap in which a cap body 2 and an upper lid 3 detachable from the cap body 2 are connected by a hinge 4 made of a synthetic resin. It is used by being attached to the mouth portion 10 of the squeezable container.

Here, FIG. 1 is a plan view showing a state in which the upper lid 3 is fitted to the cap body 2, and FIG. 2 is a cross-sectional view taken along the line AA of FIG. The vertical and horizontal directions are defined in the state shown in FIG.
3 is a plan view showing a state in which the upper lid 3 is detached from the cap body 2, and FIG. 4 is a cross-sectional view taken along the line BB of FIG.

In the present embodiment, the cap body 2 has an outer cylindrical portion 21 that hangs down along the outer peripheral edge, and an inner cylindrical portion 22 that hangs concentrically on the inner side thereof. When the cap 1 is attached to the mouth portion 10 of the container, the fitting portion 21a formed on the inner peripheral surface on the lower end side of the outer cylindrical portion 21 is the fitting portion formed on the outer peripheral surface side of the mouth portion 10. While being fitted to 10a, the inner cylindrical portion 22 is in close contact with the inner peripheral surface of the mouth portion 10 in a liquid-tight manner.

By doing so, the cap 1 is liquid-tightly attached to the mouth portion 10 of the container by stoppering. However, the means for attaching the cap 1 attaches the cap 1 to the mouth portion 10 of the container. It is not limited to this as long as it can be mounted.

A slit valve 5 is attached to the cap body 2. The slit valve 5 includes, for example, a top portion 5a in which a slit S cut into a cross shape or the like is formed, a cylindrical portion 5b that hangs along the outer peripheral edge of the top portion 5a, and an outer portion on the lower end side of the cylindrical portion 5b. And a flange portion 5c formed so as to project outward. The slit valve 5 is made of, for example, an elastic material such as silicone rubber, and is formed so that the slit S formed in the top portion 5a is opened and closed by elastic deformation.
FIG. 5 is a perspective view of the slit valve 5 as viewed obliquely from above.

The cap body 2 has a spout portion 25 that opens above the slit valve 5 and rises in a cylindrical shape. The spout portion 25 is a portion serving as a spout for the contents discharged from the slit S of the slit valve 5 so that the inner diameter of the spout portion 25 is smaller than the outer diameter of the top portion 5 a of the slit valve 5. Is formed. And in order to better control the drainage of liquid when pouring out the contents, dripping liquid when returning the container to an upright state, and the content of the content on the tip side of the spout portion 25 are better suppressed, As shown in the drawing, the inner peripheral surface on the tip side of the spout portion 25 is inclined so as to increase in diameter toward the tip, and the tip end of the spout portion 25 is curved so as to warp outward. It is preferable.

The cap body 2 projects outward from the base end of the spout portion 25 and hangs along the edge frame portion 24 that covers the peripheral side of the top portion 5 a of the slit valve 5 and the outer periphery of the edge frame portion 24. The side wall 23 surrounds the side surface of the slit valve 5, and the slit valve 5 is inserted into the recessed portion defined by these. A locking step portion 23a to which the flange portion 5c of the slit valve 5 is locked is provided on the lower end side of the side wall portion 23, and an annular pressing member is provided at a position close to the locking step portion 23a. The convex part 23b in which the periphery of 6 is inserted is provided.

As a result, the slit valve 5 is attached to the cap body 2 with the flange portion 5c sandwiched between the locking step portion 23a and the pressing member 6, but the attachment means of the slit valve 5 is the side wall portion. The slit valve 5 is not limited to this as long as the slit valve 5 can be attached so as not to easily fall off from the recessed portion defined by the edge frame portion 24 and the edge frame portion 24.

Further, the upper lid 3 to be attached to and detached from the cap body 2 is sealed to prevent the contents from leaking out by sealing the spout portion 25 when the upper lid 3 is fitted to the cap body 2. A stop 7 is attached. The sealing body 7 has a sealing portion 71 to be inserted into the spout portion 25 and an outer peripheral fitting portion 72 to be fitted into a fitting cylindrical portion 32 that hangs down in a cylindrical shape from the top surface portion 31 of the upper lid 3. is doing.
FIG. 6 is a perspective view of the sealing body 7 as viewed obliquely from below.

The outer periphery fitting part 72 of the sealing body 7 has the outer cylinder part 73 and the inner cylinder part 74, and these lower ends are connected by the baseplate part 75, and it forms so that it may become a longitudinal cross-section U-shape. Has been. The upper lid 3 is fitted by the fitting convex portion 73a formed on the outer peripheral surface on the upper end side of the outer cylindrical portion 73 and the fitting convex portion 32a formed on the inner peripheral surface on the lower end side of the fitting cylindrical portion 32. The outer periphery fitting part 72 of the sealing body 7 is fitted in the cylinder part 32 in a loose fit, and the fitting convex part 73a of the outer cylinder part 73 and the fitting convex part of the fitting cylinder part 32 are fitted. A play is provided between the portion 32a. By doing so, when the container is dropped and an impact is applied with the upper lid 3 fitted to the cap body 2, the impact, particularly the longitudinal impact can be absorbed.

Further, when the sealing portion 71 of the sealing body 7 is inserted into the spout portion 25, the sealing portion 71 is in liquid tight contact with the inner peripheral surface of the spout portion 25 to seal the spout portion 25. These dimensions and the like are appropriately set so that they can be performed. At this time, in order to enhance the adhesion between the inner peripheral surface of the spout portion 25 and the sealing portion 71, a recess 25a is formed in the proximal end side inner peripheral surface of the spout portion 25 and is engaged with the recess 25a. It is also effective to form the bulging portion 71 a on the side surface of the sealing portion 71. And as mentioned above, since it is difficult to engage from the outer peripheral surface side of the spout portion 25 when the tip of the spout portion 25 is curved so as to bend outward, in such a case In addition, the above configuration is particularly effective.

Furthermore, when the sealing portion 71 of the sealing body 7 is inserted into the spout portion 25, the engagement step portion 24 a formed on the outer peripheral edge of the edge frame portion 24 of the cap body 2 is connected to the sealing step 7. The adhesion between the inner peripheral surface of the spout portion 25 and the sealing portion 71 can also be achieved by engaging the lower end edge of the outer periphery fitting portion 72 and suppressing the spout portion 25 into which the sealing portion 71 is inserted. Can be increased. Furthermore, since the outer periphery fitting part 72 formed so that it may become a vertical cross-section U-shape functions also as a buffer part, in the state which fitted the upper cover 3 to the cap main body 2, a container falls etc. and an impact is received. When applied, the impact, particularly the lateral impact, can be absorbed.
Thereby, in this embodiment, the outer periphery fitting part 72 formed in the longitudinal cross-section U-shape of the sealing body 7 was made to fit loosely in the fitting cylinder part 32 of the upper cover 3. In combination, the spout 25 can be more reliably sealed. In particular, in this embodiment, in order to seal the spout portion 25 without the front end side of the spout portion 25 being in contact with the sealing body 7, the front end of the spout portion 25 is curved so as to warp outward. Even if formed, sealing of the spout part 25 is performed reliably.

Here, in FIG. 2, the portions where the members are overlapped with each other are actually elastically deformed and a pressing force acts on each other. For example, the portion surrounded by the chain line in FIG. 2 is enlarged and shown in FIG. 7, but the force shown by the arrow in FIG. 7 acts on the sealing portion 71 and the spout portion 25 of the sealing body 7 to each other. It comes to adhere closely. Further, a force indicated by an arrow in FIG. 7 acts on the outer periphery fitting portion 72 (outer cylinder portion 73) of the sealing body 7 and is pushed down by the top surface portion 31 of the upper lid 3, so that the outer periphery fitting portion 72 is The spout 25 can be held down while being urged.

Further, in the present embodiment, a guide tube 33 that hangs down from the top surface portion 31 of the upper lid 3 is provided, and the tip of the guide tube 33 is located between the outer rising portion 2 a and the inner rising portion 2 b that rise from the cap body 2. It is made to fit in. By fitting in this way, when an impact is applied due to the container falling or the like, the impact, particularly the impact in the lateral direction, can be absorbed, and the spout 25 can be more reliably secured. Can be sealed.

The outer rising portion 2a and the inner rising portion 2b of the cap body 2 may be formed continuously in a ring shape or may be formed by cutting out a part thereof. Further, as shown in the drawing, the outer rising portion 2a is formed so that the inner peripheral surface thereof increases in diameter toward the tip, and the inner rising portion 2b is inclined so that the outer peripheral surface thereof decreases in diameter toward the tip. It is preferable to form in the annular wall. By doing so, when the upper lid 3 is fitted to the cap body 2, the tip of the guide tube 33 is guided by being in contact with the inner peripheral surface of the outer rising portion 2a or the outer peripheral surface of the inner rising portion 2b. The outer rising portion 2a and the inner rising portion 2b are fitted. As a result, it is possible to prevent the positional deviation between the sealing portion 71 and the spout portion 25 of the sealing body 7 and to insert the sealing portion 71 into the spout portion 25 more reliably.

Further, when the upper lid 3 is fitted to the cap body 2, in this embodiment, the outer rising portion 2 a is formed on the outer peripheral edge side of the cap body 2, and the positions of the inner rising portion 2 b and the guide cylinder 33 are adjusted as appropriate. The fitting part 30a formed in the lower end side inner peripheral surface of the cylindrical part 30 depending from the outer peripheral edge of the top surface part 3 of 3 is fitted in the upper end edge of the outer rising part 2a.

Next, an operation for pouring contents from a container equipped with the cap 1 according to this embodiment will be described.

First, the upper lid 3 is detached from the cap body 2 to release the sealing of the spout portion 25 by the sealing portion 71 of the sealing body 7, and the container is squeezed with the spout portion 25 facing down. Thereby, the pressure in the container is increased, and the contents are discharged so as to push open the slit S of the slit valve 5, and the discharged contents are discharged from the spout portion 25. Then, when an appropriate amount of content is poured out, the container is restored by releasing the squeezing force while returning the container to an upright state. Along with this, the pressure in the container decreases, the content remaining in the spout 25 is drawn into the container from the slit S, and then the slitting operation is completed by closing the slit S.

Thus, according to this embodiment, when the content is poured out, the content discharged from the slit valve 5 can be poured out from the spout portion 25 while remaining in the spout portion 25. . At that time, since the peripheral side of the top portion 5a of the slit valve 5 is covered with the edge frame portion 24 of the cap body 2, the contents do not hang down from the peripheral edge of the valve due to its structure. Moreover, the contents remaining in the spout port 25 after the pouring, that is, the contents remaining on the slit valve 5 are easily drawn from the slit S of the slit valve 5, regardless of the cutting position of the slit S. It can be collected in a container.

Further, in the present embodiment, the inner peripheral surface on the tip side of the spout portion 25 is inclined so as to increase in diameter toward the tip, and the tip of the spout portion 25 is curved so as to warp outward. Is formed. As described above, it is possible to improve the liquid drainage when the contents are poured out and to prevent the dripping more satisfactorily as described above, but the contents remaining on the tip side of the spout portion 25 after the liquid runs out. When the container is returned to the upright state, the object slides down into the spout portion 25 so as to slide on the inner peripheral surface of the spout portion 25 on the tip side. For this reason, it can suppress effectively that the content adheres and remains on the front end side of the spout part 25. FIG.

In addition, when the content remaining in the spout 25 is drawn into the container, the amount that can be drawn depends on the volume change when the container is squeezed. For this reason, assuming a general volume change, it is preferable that the volume of the space in the spout portion 25 formed above the slit valve 5 is smaller than the change amount. In particular, in this embodiment, the cap body 2 has an edge frame portion 24 that covers the peripheral side of the top portion 5 a of the slit valve 5, and rises in a cylindrical shape along the inner peripheral edge of the edge frame portion 24. Since the inner diameter of the formed spout portion 25 is formed so as to be smaller than the outer diameter of the top portion 5 a of the slit valve 5, the volume of the space in the spout portion 25 formed above the slit valve 5. It is easy to design so that becomes small.

Although the present invention has been described with reference to the preferred embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention. Nor.

For example, in the above-described embodiment, an example in which the cap body 2 and the upper lid 3 are connected by the hinge 4 is given. However, even if the cap body 2 and the upper lid 3 are separately formed, The upper lid 3 can be detachably attached to the cap body 2 by screwing.

The cap with a slit valve according to the present invention is used by attaching to the mouth of a container containing, for example, seasonings such as oils, soy sauce, sauces, dressings, chemicals such as detergents and cosmetics. it can.

All the contents of the documents described in this specification and the content of the Japanese application that forms the basis of the Paris priority of the present application are incorporated herein.

DESCRIPTION OF SYMBOLS 1 Cap 2 Cap main body 23 Side wall part 24 Edge frame part 24a Engagement step part 25 Outlet part 25a Depression 3 Upper cover 32 Fitting cylinder part 5 Slit valve 5a Top part 7 Sealing body 71 Sealing part 71a Expansion part 72 Outer circumference fitting Joint S slit

Claims

A cap with a slit valve provided with a cap body to which a slit valve made of an elastic material having a slit formed at the top is attached, and an upper lid detachable from the cap body,
The cap body is
A spout opening that opens above the slit valve and rises in a cylindrical shape;
An edge frame part that projects outward from the base end of the spout part and covers the peripheral side of the top part of the slit valve;
A cap with a slit valve, characterized by having a side wall portion that hangs down along an outer peripheral edge of the edge frame portion and surrounds a side surface of the slit valve.
The inner peripheral surface on the tip side of the spout portion is inclined so as to increase in diameter toward the tip, and the tip of the spout portion is formed to be curved so as to warp outward. A cap with a slit valve according to 1.
A sealing body for sealing the spout part is attached to the upper lid,
The sealing body has a sealing portion to be inserted into the spout portion and an outer peripheral fitting portion having a U-shaped longitudinal section, and the outer peripheral fitting portion is formed in a cylindrical shape from the top surface portion of the upper lid. The cap with a slit valve of Claim 1 or 2 currently fitted by the fitting cylinder part which hangs down freely.
When the sealing part of the sealing body is inserted into the spout part of the cap body, the sealing body is formed on the engagement step formed on the outer peripheral edge of the edge frame part of the cap body. The cap with a slit valve of Claim 3 which the lower end edge of the said outer periphery fitting part engages.
The slit valve according to claim 3 or 4, wherein a recess is formed on an inner peripheral surface of the base end side of the spout portion, and a bulging portion that engages with the recess is formed on a side surface of the sealing portion. With cap.
6. A guide tube hanging from the top surface portion of the upper lid is provided, and a tip of the guide tube is fitted between an outer rising portion and an inner rising portion rising from the cap body. Cap with slit valve as described in 2.