JP7086479B2 - Container cap - Google Patents

Description

The present disclosure relates mainly to a container cap having a check valve, which is used by being attached to a synthetic resin container.

As a container for storing cosmetics such as highly viscous lotion, shampoo, rinse or liquid soap, food seasonings such as sauce and liquid miso, and contents such as chemicals. Equipped with a configured check valve, the pressure inside the container is increased by squeezing the body to open the one-point valve, and the highly viscous contents can be poured out from the injection cylinder via the one-point valve. Is disclosed.

Japanese Unexamined Patent Publication No. 2015-105131

However, in the container with a cap described in Patent Document 1, when the squeeze of the body is released and the contents are sucked back, the one-point valve opens due to the weight of the contents thereafter, and eventually dripping occurs. There was something.

The present disclosure has an object of solving such a problem, and an object thereof is for a container capable of suppressing dripping while accommodating and pouring highly viscous contents. I am proposing a cap.

The container caps of the present disclosure are
A container cap that has a bottle shape with a mouth, body, and bottom, and is attached to the container body that forms a storage space for the contents.
A cap body that has an eclipse-cylindrical shape and has an opening leading to the accommodation space and is attached to the mouth.
It is provided with a check valve that closes the opening and is opened by a positive pressure in the accommodation space to eject the contents in the accommodation space.
The check valve is provided on both sides in the width direction of the support arm that crosses the central portion of the opening and is fixed to the outer edge of the opening, and can be displaced upward with the support arm as a fulcrum. With multiple movable valves ,
The support arm is provided at a plurality of strips provided at both ends in the longitudinal direction of the support arm and at the center of the support arm in the longitudinal direction, and is wider in the width direction of the support arm than the plurality of strips. Has a wide part and
Each movable valve body of the plurality of movable valve bodies can be displaced upward with the widthwise end portion of the plurality of strips as a fulcrum, and the upward displacement causes the radial outer side of each movable valve body. The check valve is opened by creating a flow path between each movable valve body and the wide portion .

Further, in the above configuration, the container cap of the present disclosure has a substantially circular shape in the wide portion, and the plurality of movable valve bodies have a substantially semicircular shape extending along the outer peripheral edge of the wide portion. Is preferable.

According to the present disclosure, it is possible to propose a container cap capable of suppressing dripping while accommodating and pouring highly viscous contents.

It is a front sectional view of the container cap which concerns on one Embodiment of this disclosure. (A) is a plan view of the check valve unit in FIG. 1, and (b) is a cross-sectional view taken along the line AA. FIG. 3 is a cross-sectional view when the container to which the container cap shown in FIG. 1 is attached is tilted so that the contents can be poured out. It is sectional drawing in the state of squeezing the body of the container body from the state of FIG. 3 and pouring out the contents. It is a top view of the check valve unit opened in the state of FIG. FIG. 5 is a cross-sectional view showing a state in which the squeeze of the body of the container body is released from the state of FIG. 5 and the contents are pulled in by the suckback effect.

Hereinafter, the present disclosure will be described in more detail with reference to the drawings.

The container cap 1 according to the first embodiment of the present disclosure will be illustrated and described in detail with reference to FIGS. 1 to 6. In the present specification, claims, abstracts and drawings, the upper side in FIG. 1 is the upper side and the lower side is the lower side based on the upright state of the container. Further, the radial direction is defined as a direction that passes through the axis O of the container cap 1 and follows a straight line perpendicular to the axis O. The longitudinal direction of the support arm 22 is the vertical direction of FIG. 2A, and the width direction is the horizontal direction of FIG. 2A.

As shown in FIG. 1, the container cap 1 according to the present embodiment can be attached to and detached from the mouth portion 4a of the container body 2 forming the storage space S for the contents, has a ridged tubular shape, and has a storage space. A cap body 10 having an opening leading to S, and a check valve unit 20 having a check valve that closes the opening and is opened by a positive pressure in the accommodation space S to discharge the contents in the accommodation space S. , A lid 50 that covers the dispensing cylinder 14 from above is provided.

In the present embodiment, the container body 2 to which the container cap 1 is attached closes the mouth portion 4a, the body portion 4c formed wider than the mouth portion 4a and extending in the vertical direction, and the lower portion of the body portion 4c. Has a bottom (not shown). A male screw portion 4b is provided on the outer peripheral surface of the mouth portion 4a, and is configured to be screw-engaged with the female screw portion 12a provided on the inner peripheral surface of the outer peripheral wall 11 of the cap body 10.

The container body 2 is made of synthetic resin in this embodiment, and is formed by blow molding a parison in which a molding material is extruded into a tube shape. The container body 2 can also be formed by using another method, such as forming a preform previously formed by injection molding or the like by biaxial stretching blow molding.

The cap main body 10 has an ecstatic tubular shape having a tubular outer peripheral wall 11 and a top wall 19 connected to the upper end of the outer peripheral wall 11. As described above, the container body 2 has a female screw portion 12a on the inner peripheral surface of the outer peripheral wall 11 and is screw-engaged with the male screw portion 4b provided on the outer peripheral surface of the mouth portion 4a of the container body 2. Can be fixed to. A seal wall 18 is formed on the lower surface of the top wall 19 at a position corresponding to the inner peripheral surface of the mouth portion 4a, and the seal wall 18 abuts on the inner peripheral surface of the mouth portion 4a to cause the mouth portion 4a. Is hermetically sealed by the cap body 10.

Further, a fitting wall 16 for fitting the check valve unit 20, which will be described later, is provided inside the seal wall 18 in the radial direction. An engaging protrusion 16a is formed on the inner peripheral surface of the fitting wall 16, and the outer peripheral surface of the cylinder wall 24 of the check valve unit 20 is fitted to the inner peripheral surface of the fitting wall 16 and is checked. The check valve unit 20 can be fixed to the fitting wall 16 of the cap body 10 by undercut engagement between the annular protrusion 24a on the valve unit 20 side and the engagement protrusion 16a.

The cap body 10 may be fixed to the mouth portion 4a of the container body 2 by screw engagement as in the present embodiment, or may be fixed by a plugging type. Various choices are possible.

A pouring cylinder 14 extending upward is integrally provided near the center of the top wall 19 in the radial direction. The inner space of the dispensing cylinder 14 forms a dispensing hole 14a for pouring out the contents contained in the storage space S of the container body 2 to the outside by squeeze the body portion 4c.

In FIG. 1, a check valve unit 20 is arranged directly below the injection hole 14a. The check valve unit 20 has a cylindrical shape and crosses a cylindrical wall 24 that is fitted and fixed to the fitting wall 16 of the cap body 10 and a central portion of an opening formed at the lower end portion of the tubular wall 24. The support arm 22 fixed to the outer edge portion (see FIGS. 2A and 2B) and the bent portion 21a of the support arm 22 provided on both sides in the width direction of the support arm 22 (see FIG. 2A). It is provided with two movable valve bodies 21 that can be displaced upward as a fulcrum. In the present embodiment, the check valve is configured by the support arm 22 and the movable valve body 21.

As shown in FIGS. 2A and 2B, the support arm 22 constituting the check valve has two strips provided at both ends in the longitudinal direction of the support arm 22 (vertical direction in FIG. 2A). It has a portion 22a and a wide portion 22b provided at the central portion in the longitudinal direction of the support arm 22 and wider in the width direction (left-right direction in FIG. 2A) of the support arm 22 than the strip-shaped portion 22a.

In the present embodiment, the wide portion 22b has a substantially circular shape as shown in FIG. 2A, and covers a predetermined area of the central portion of the opening leading to the accommodation space S. Further, each movable valve body 21 has a substantially semicircular shape extending along the outer peripheral edge of the substantially circular wide portion 22b, and has a width direction in the two strip-shaped portions 22a arranged vertically in FIG. 2A. It is supported by the support arm 22 by two bent portions 21a formed at the ends. Each movable valve body 21 rotates around the two bent portions 21a as a fulcrum, and can be displaced upward (direction toward the front perpendicular to the paper surface of FIG. 2A) by the positive pressure in the container body 2. When each movable valve body 21 rotates around the bent portion 21a and is displaced upward, the movable valve body 21 and the wide portion 22b are located between the movable valve body 21 and the cylinder wall 24 on the radial outer side of the movable valve body 21. A flow path 20a is formed between the and (see FIGS. 4 and 5).

When the movable valve body 21 is displaced upward to generate the flow path 20a, the check valve is opened, and the contents in the accommodation space S of the container body 2 are poured from the pouring hole 14a through the flow path 20a. It will be possible to get out.

The material of the check valve unit 20 can be variously selected from soft materials such as rubber and elastomer and various synthetic resins.

As shown in FIG. 1, the lid 50 is connected to the outer peripheral wall 11 of the cap body 10 via a hinge 53h, and can cover the injection hole 14a. More specifically, the lid 50 includes a flat plate-shaped upper wall 52 and a lid peripheral wall 53 that is connected to the outer edge of the upper wall 52 and whose outer peripheral surface is continuous with the outer wall 11. The inner peripheral surface of the lower portion of the lid peripheral wall 53 is configured to engage with the stepped portion 19a formed at the outer peripheral end of the top wall 19 of the cap body 10. Further, on the lower surface of the upper wall 52, a tubular seal cylinder 54 that fits on the outer peripheral surface of the injection cylinder 14 and seals the injection hole 14a when the lid 50 is closed, and a discharge cylinder 14 An annular protrusion 55 that abuts on the inner peripheral surface is provided. As shown in FIG. 1, a knob portion 53a is formed on the peripheral wall 53 of the lid at a position in the circumferential direction facing the hinge 53h. The grip portion 53a can be opened by the user rotating the lid 50 around the hinge 53h while pinching the grip portion 53a.

The lid 50 is integrally molded with the cap body 10 via the hinge 53h as in the present embodiment and is undercut engaged with the cap body 10, and a screw portion is provided on the cap body 10. On the other hand, various forms can be selected, such as being configured to be fixed by screw engagement. Further, the structure may be such that the lid 50 is not provided.

When discharging the contents from the container cap 1 configured as described above, the user picks the grip portion 53a from the state shown in FIG. 1 and rotates the lid 50 around the hinge 53h to open it. Next, the user rotates the container body 2 by 90 degrees or more around the rotation axis perpendicular to the paper surface from the upright state shown in FIG. 1 while grasping the body portion 4c of the container body 2, and the pouring hole 14a is formed. The inverted operation is performed so that the container body 2 is lower than the bottom of the container body 2 (see FIG. 3). By this inverted operation, the contents in the accommodation space S move from the bottom to the mouth 4a, and the air in the accommodation space S conversely moves toward the bottom of the container body 2.

Even if the contents move to the mouth portion 4a side and stay in the vicinity of the check valve unit 20 by setting the container body 2 in the inverted posture shown in FIG. 3, the contents leak from the check valve for a while. Never come. In the present embodiment, since the wide portion 22b having a predetermined area is formed in the central portion of the opening and the area of the movable valve body 21 is kept small, the contents applied to the movable valve body 21 in the inverted posture shown in FIG. The gravity of is also kept small. Further, as shown in FIG. 2A, the gap between the movable valve body 21 and the cylinder wall 24 and between the movable valve body 21 and the wide portion 22b is narrowly configured before the displacement of the movable valve body 21. Therefore, the surface tension ST (see FIG. 3) easily acts between these members. Therefore, in the inverted posture shown in FIG. 3, since the surface tension ST between the members exceeds the gravity of the contents applied to the movable valve body 21, it is possible to suppress the check valve from being opened due to the weight of the contents, and the contents. It is possible to suppress dripping due to its own weight.

Next, the user squeezes the body 4c of the container body 2 from the tilted posture shown in FIG. 3 for pouring out the contents. The squeeze of the body 4c increases the pressure in the container body 2 to generate a positive pressure. Due to this positive pressure, the two movable valve bodies 21 rotate around the bent portion 21a as a fulcrum and are displaced upward (see FIG. 4). Therefore, the movable valve body 21 and the cylinder wall 24 on the radial outer side of the movable valve body 21 A flow path 20a is formed between the movable valve body 21 and the wide portion 22b (see FIGS. 4 and 5). As a result, the check valve is opened, and the contents in the accommodation space S can be poured out to the outside through the flow path 20a and the pouring hole 14a.

When opening the check valve, as shown in FIGS. 4 and 5, due to the upward displacement of the movable valve body 21, two flow paths 20a are provided for each movable valve body 21, for a total of four flow paths 20a. Since it is generated and passes through the contents, even when the contents having a high viscosity are poured out, the contents can be smoothly poured out without squeezing the body portion 4c with a very large pressing force.

When the pouring of the contents is completed, the user releases the squeeze of the body 4c of the container body 2. As a result, the positive pressure in the container body 2 is reduced, and the movable valve body 21 is restored to its original shape by the restoring force of the bent portion 21a to close the check valve. In the process of closing the check valve, the volume on the side of the pouring hole 14a increases and turns to negative pressure, so that the residual contents near the pouring hole 14a are drawn into the container body 2 by the so-called suckback effect. It can suppress dripping.

After the check valve is closed, the surface tension ST between the members exceeds the gravity of the contents applied to the movable valve body 21 as described above, so that the check valve is opened due to the weight of the contents in the tilted posture. It can be suppressed from being released and dripping can be suppressed.

In the container cap 1 according to the present embodiment, the viscosity of the contents is preferably in the range of 80 to 10000 mPa · s (millipascal seconds). By setting the viscosity of the contents to 80 mPa · s or more, it is possible to further suppress the leakage of the contents from the gap between the movable valve body 21 and the wide portion 22b after being sucked back in the tilted posture. Further, by setting the viscosity of the contents to 10,000 mPa · s or less, the squeeze force required for pouring the contents can be further suppressed, and it is possible to easily suck back after pouring the contents. .. Examples of contents within the above viscosity range include, for example, salad oil, olive oil, gum syrup, worcestershire sauce / yakisoba sauce, rich sauce / okonomiyaki sauce / tonkatsu sauce, ketchup and the like.

As described above, in the present embodiment, the container cap 1 is attached to the container body 2 which has a bottle shape having a mouth portion 4a, a body portion 4c, and a bottom portion and forms a storage space S for the contents. The cap body 10 which has an ecstatic tubular shape and has an opening leading to the accommodation space S, closes the opening and is opened by the positive pressure in the accommodation space S, and is opened by the positive pressure in the accommodation space S. It is equipped with a check valve for pouring out the contents inside, and the check valve crosses the central portion of the opening and is fixed to the outer edge of the opening, and the support arm 22 is provided on both sides in the width direction of the support arm 22, respectively. It is configured to have a plurality of movable valve bodies 21 that are provided and can be displaced upward with the support arm 22 as a fulcrum. By adopting such a configuration, the area of the movable valve body 21 is kept small by the support arm 22 that crosses the central portion of the opening, so that the gravity of the contents applied to the movable valve body 21 can be suppressed in the inverted posture. can. Further, since the gap between the movable valve body 21 and the cylinder wall 24 can be narrowed before the displacement of the movable valve body 21, the surface tension ST can be efficiently applied between the members. Therefore, after releasing the squeeze of the body portion 4c in the inverted posture and sucking back the residual contents, the surface tension ST between the members is made to exceed the gravity of the contents applied to the movable valve body 21. The weight of the contents makes it difficult for the check valve to open again, and dripping can be suppressed.

Further, in the present embodiment, the support arm 22 is provided at a plurality of strip-shaped portions 22a provided at both ends in the longitudinal direction of the support arm 22 and a plurality of strip-shaped portions 22a provided at the central portion in the longitudinal direction of the support arm 22. Each movable valve body 21 of the plurality of movable valve bodies 21 has a wide portion 22b wide in the width direction of the support arm 22, and can be displaced upward with the widthwise end portion of the plurality of strip-shaped portions 22a as a fulcrum. The check valve is configured to be opened by creating a flow path 20a on the radial outside of each movable valve body 21 and between each movable valve body 21 and the wide portion 22b due to the upward displacement. By adopting such a configuration, a wide portion 22b having a predetermined area is formed in the central portion of the opening, so that the area of the movable valve body 21 is suppressed to be smaller. The gravity of an object can be suppressed to be smaller. Further, since the gap between the movable valve body 21 and the cylinder wall 24 and between the movable valve body 21 and the wide portion 22b can be narrowed before the displacement of the movable valve body 21, the gaps between the members can be efficiently formed. Surface tension ST can be applied. Therefore, after releasing the squeeze of the body portion 4c in the inverted posture and sucking back the residual contents, the surface tension ST between the members is made to exceed the gravity of the contents applied to the movable valve body 21. The weight of the contents makes it difficult for the check valve to open, and dripping can be suppressed. Further, the upward displacement of the movable valve body 21 creates two flow paths 20a for each movable valve body 21, for a total of four places, and allows the contents to pass through. Therefore, even when the contents having a high viscosity are poured out, the contents can be smoothly poured out without squeezing the body portion 4c with a very large pressing force. Further, since each movable valve body 21 rotates with a plurality of (two) bent portions 21a as fulcrums, the opening strength of the movable valve body 21 can be easily adjusted.

Further, in the present embodiment, the wide portion 22b has a substantially circular shape, and the plurality of movable valve bodies 21 have a substantially semicircular shape extending along the outer peripheral edge of the wide portion 22b. By adopting such a configuration, the area of the movable valve body 21 is reduced as much as possible to suppress the gravity of the contents applied to the movable valve body 21 in accordance with the circular mouth portion 4a in the plan view normally adopted, and the contents. The weight of the object makes it difficult for the check valve to open, and dripping can be suppressed.

Although the present disclosure has been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications and corrections based on the present disclosure. Therefore, it should be noted that these modifications and modifications are included in the scope of the present invention. For example, the functions included in each component can be rearranged so as not to be logically inconsistent, and a plurality of components can be combined or divided into one. It should be understood that these are also included in the scope of the present invention.

For example, in the present embodiment, the wide portion 22b has a substantially circular shape, and the plurality of movable valve bodies 21 have a substantially semicircular shape extending along the outer peripheral edge of the wide portion 22b. Not limited to. The shape of the wide portion 22b can be variously selected according to the shape of the container body 2 or the cap body 10, such as an elliptical shape or a polygonal shape, in addition to a circular shape. The shape of the movable valve body 21 can also be changed according to the shape of the wide portion 22b.

Further, in the present embodiment, each movable valve body 21 is configured to be supported by two bending portions 21a, but the present invention is not limited to this embodiment. Each movable valve body 21 may be configured to be supported by one or more bent portions 21a. Further, instead of rotating the movable valve body 21 around the bent portion 21a, the movable valve body 21 itself may be elastically deformed to be displaced upward to form a flow path 20a.

Further, in the present embodiment, the check valve unit 20 is configured to be integrally formed, but the present invention is not limited to this embodiment. The support arm 22 and the movable valve body 21 constituting the check valve unit 20 may be used in combination with those manufactured separately.

1 Container cap 2 Container body 4a Mouth part 4b Male thread part 4c Body part 10 Cap body 11 Outer peripheral wall 12a Female thread part 14 Injection cylinder 14a Injection hole 16 Fitting wall 16a Engagement protrusion 18 Seal wall 19 Top wall 19a Step part 20 Check valve unit 20a Flow path 21 Movable valve body 21a Bending part 22 Support arm 22a Band-shaped part 22b Wide part 24 Cylindrical wall 24a Circular protrusion 50 Lid body 52 Upper wall 53 Lid body peripheral wall 53a Grip part 53h Hinge 54 Seal cylinder 55 Circular protrusion O Axial center S Containment space ST Surface tension

Claims (2)

A container cap that has a bottle shape with a mouth, body, and bottom, and is attached to the container body that forms a storage space for the contents.
A cap body that has an eclipse-cylindrical shape and has an opening leading to the accommodation space and is attached to the mouth.
It is provided with a check valve that closes the opening and is opened by a positive pressure in the accommodation space to eject the contents in the accommodation space.
The check valve is provided on both sides in the width direction of the support arm that crosses the central portion of the opening and is fixed to the outer edge of the opening, and can be displaced upward with the support arm as a fulcrum. With multiple movable valves ,
The support arm is provided at a plurality of strips provided at both ends in the longitudinal direction of the support arm and at the center of the support arm in the longitudinal direction, and is wider in the width direction of the support arm than the plurality of strips. Has a wide part and
Each movable valve body of the plurality of movable valve bodies can be displaced upward with the widthwise end portion of the plurality of strips as a fulcrum, and the upward displacement causes the radial outer side of each movable valve body. A container cap, characterized in that the check valve is opened by creating a flow path between each movable valve body and the wide portion . The container cap according to claim 1 , wherein the wide portion has a substantially circular shape, and the plurality of movable valve bodies have a substantially semicircular shape extending along the outer peripheral edge of the wide portion.

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