JP6352207B2 - Dispensing cap and container having the same - Google Patents

Description

  The present invention relates to a pouring cap for pouring out the contents stored in a container body, and a container having the pouring cap attached to the container body.

  As a pouring cap that is attached to a container body and pours out contents, a cap incorporating a check valve is known (for example, see Patent Document 1). According to such a pouring cap, since the introduction of outside air into the container body can be prevented, the freshness of the contents can be maintained by suppressing the contact between the contents and the air.

JP 2011-31921 A

  By the way, such a pouring cap is detachably attached to the mouth of the container main body by screwing or the like, and can be removed from the container main body. However, the contents may be refilled after use.

  An object of the present invention is to solve such problems, and it is possible to prevent refilling of contents in a container including a pouring cap that is detachably attached to the container body. The aim is to provide a new dispensing cap that can.

The present invention has been made to solve the above problems, and the pouring cap of the present invention has a cylindrical wall that surrounds the mouth portion of the container body and is engaged and held by the mouth portion. A top wall connected to the wall has a base on which an outlet for the contents stored in the container body is formed, and a ceiling wall that covers the opening of the mouth and includes a through hole. An inner stopper that is retained by the mouth and a check valve that is retained by the inner stopper between the top wall and the top wall and opens and closes the through hole;
The inner plug engages with a first engaging portion that engages with a first engaged portion provided on an outer peripheral surface of the mouth portion, and a second engaged portion provided on an inner peripheral surface of the cylindrical wall. A second engaging portion that
The engagement strength of the first engagement portion with respect to the first engaged portion is greater than the engagement strength of the second engagement portion with respect to the second engaged portion.

In the pouring cap of the present invention, the first engaging portion is a claw portion depending from the outer edge portion of the top wall,
It is preferable that the first engaged portion is an annular recess provided on the outer peripheral surface of the mouth portion.

  Further, in a container in which such a pouring cap is mounted on the container body, the container body is provided on the inner side of the outer layer body having the outside air introduction hole and the outer layer body, and the contained contents are poured out. Accordingly, it is preferable to include an inner layer body that takes in air between the outer air introduction hole and the outer layer body and deforms by volume reduction.

  ADVANTAGE OF THE INVENTION According to this invention, in a container provided with the extraction cap attached to the container main body, it becomes possible to provide the new extraction cap which can prevent the refilling of the contents.

It is sectional drawing of the side view which shows one Embodiment of the extraction | pouring cap according to this invention in the state with which the container main body was mounted | worn. FIG. 2 is a view showing a state in which the base is screwed off from the container body in the pouring cap shown in FIG. 1.

  Hereinafter, the present invention will be described more specifically with reference to the drawings. In FIG. 1, the code | symbol 1 shows one Embodiment of the extraction | pouring cap according to this invention. The dispensing cap 1 of this embodiment includes a base 2, an inner plug 3, a check valve 4, and a lid 5.

  The base 2 has a cylindrical shape and includes a cylindrical wall 2a that surrounds a mouth portion 7a of a container body 6 to be described later. A female threaded portion 2b that engages with a male threaded portion 7b provided in the mouth portion 7a is provided on the inner peripheral surface of the cylindrical wall 2a, and the base 2 is engaged and held with the mouth portion 7a by screw engagement. Is done.

  A top wall 2c is integrally connected to an upper portion of the cylindrical wall 2a. A hole (content outlet) 2d penetrating in the vertical direction is provided in the central portion of the top wall 2c, and an extraction cylinder 2e is provided surrounding the outlet 2d. The top of the dispensing tube 2e is expanded radially outward to form a lip. Further, a hole (vent hole) 2f is provided on the outer peripheral portion of the top wall 2c. An annular seal tube portion 2g that protrudes downward is provided on the lower surface of the top wall 2c.

  An inner plug 3 is disposed inside the base 2. The inner plug 3 has a top wall 3a that covers the opening of the mouth portion 7a of the container body 6, and a through hole 3b is provided at the center of the top wall 3a. On the outer side in the radial direction of the through-hole 3b, an annular recess 3c that is opened upward is provided.

The inner plug 3 has a cylindrical annular wall 3d standing from the outer edge portion of the top wall 3a, and a claw portion 3e as a first engaging portion depending from the outer edge portion of the top wall 3a. The claw portion 3e includes a plate-like protruding piece 3f extending in the axial direction, and a protruding portion 3g protruding from the radially inner surface of the protruding piece 3f. The nail | claw part 3e carries out undercut engagement because the projection part 3g enters into the annular recessed part 7c as a 1st to-be-engaged part provided in the outer peripheral surface of the upper end part of the opening part 7a. Thereby, the inner plug 3 is held against the mouth portion 7a. In the present embodiment, a plurality of claw portions 3e are provided at intervals in the circumferential direction, and intermittent portions 3h are formed between adjacent claw portions 3e. Moreover, in this embodiment, the opening part 3m used as the air path is formed above the nail | claw part 3e. Further, the claw portion 3e has a so-called bite-off shape, and the opening 3m becomes a space for a die having a bite-off structure to enter when the inner plug 3 is injection-molded. Further, as shown in FIG. 1, an inclined surface 3i is provided below the protrusion 3g of the claw portion 3e so as to incline outward in the radial direction. The shape and number of the claw portions 3e are not particularly limited, and can be changed as appropriate.

  On the outer peripheral surface of the upper end portion of the annular wall 3d, there is a flange 3j as a second engagement portion protruding outward in the radial direction. The flange 3j engages with an annular convex portion 2h as a second engaged portion provided on the inner peripheral surface of the cylindrical wall 2a. Here, the engagement strength of the claw portion 3e with respect to the annular recess 7c is set to be greater than the engagement strength of the flange 3j with respect to the annular projection 2h. The ceiling wall 3a is provided with an annular inner cylindrical wall 3k that hangs down from the ceiling wall 3a and contacts the inner peripheral surface of the mouth portion 7a. The mouth portion is formed by the inner cylindrical wall 3k and the claw portion 3e. The engagement strength is further increased by sandwiching the upper end of 7a. The shapes of the flange 3j and the annular protrusion 2h are not particularly limited, and may be a plurality of protrusions provided at intervals in the circumferential direction.

  The configuration of the inner plug 3 is not limited to the shape of the illustrated example, and for example, a so-called suck back mechanism can be provided. In this case, the top wall 3a is provided with a cylindrical wall penetrating the top and bottom, and a moving valve element such as a spherical shape can be moved in the axial direction of the cylindrical wall, and cannot be removed. Deploy. Thereby, after pouring the liquid in the inverted posture, the container is returned to the upright posture, so that the moving valve element moves from the dispensing tube 2e side to the container body 6 side. Can be drawn into the cylindrical wall side (suck back), and dripping from the dispensing cylinder 2e can be prevented.

  A check valve 4 for opening and closing the through hole 3b is provided between the top wall 2c and the top wall 3a. The check valve 4 has an annular base portion 4a, and a disc-like valve body 4c is integrally provided via one or more elastic pieces 4b provided inside the base portion 4a. The check valve 4 of the present embodiment is in the form of a so-called three-point valve in which the valve body 4c is held by three elastic pieces 4b. In addition to a three-point valve, a one-point valve, a two-point valve, a ball valve, or the like may be used, and the shape is not particularly limited.

  As shown in FIG. 1, the check valve 4 is retained and retained by the inner plug 3 by fitting the lower end of the base 4 a into the recess 3 c. Further, the upper end portion of the base portion 4a is positioned by being arranged (fitted outside) on the radially outer side of the seal tube portion 2g. In this state, the outlet 2d and the vent 2f are blocked by the base 4a. And the through-hole 3b is closed when the valve body 4c which covers this seats on the top wall 3a. A thin annular outer valve body 4d is provided on the outer peripheral surface of the base 4a. The outer valve body 4d is normally seated on the lower surface of the top wall 2c and closes the vent 2f.

  A lid 5 is provided above the base 2. The lid 5 includes a plate-like upper wall 5a and an outer peripheral wall 5b that is integrally connected to the upper wall 5a and is continuous to the cylindrical wall 2a. The outer peripheral wall 5b is provided with a hinge 5c that is integrally connected to the cylindrical wall 2a. At a position facing the hinge 5c, a finger hook portion 5d protruding outward in the radial direction is provided. A cylindrical (or columnar) seal portion 5e that enters the dispensing tube 2e is provided on the lower surface of the upper wall 5a.

  The pouring cap 1 having such a configuration can be attached to, for example, the container body 6 shown in FIG. The container body 6 of the present embodiment is a double container (laminated peeling container) constituted by an outer layer body 7 and an inner layer body 8.

  The outer layer body 7 is formed by sequentially connecting a cylindrical portion and a bottom portion (not shown) to a cylindrical mouth portion 7a, and has a flexibility that can be restored. The mouth portion 7a is provided with an outside air introduction hole 7d, and further, a vertical groove 7e is formed on the outer peripheral surface provided with the outside air introduction hole 7d so as to cut out the male screw portion 7b in the vertical direction. The inner layer body 8 is formed in a thin-walled and deformable bag shape, and includes a filling space S in which the contents can be filled.

Below, the method of mounting | wearing the container main body 6 with the extraction | pouring cap 1 is demonstrated. When the dispensing cap 1 is attached to the container body 6, the inner plug 3 and the check valve 4 are incorporated in the base 2 in advance. In order to incorporate the inner plug 3 and the check valve 4 into the base 2, the base portion 4 a of the check valve 4 is first fitted into the recess 3 c of the inner plug 3, and this is inserted from below the base 2. By pushing in until the flange 3j and the annular protrusion 2h are engaged with each other, the inner plug 3 is retained against the base 2. At this time, the check valve 4 is positioned by positioning the upper end portion of the base portion 4a on the radially outer side of the seal tube portion 2g. Thereafter, the dispensing cap 1 can be attached to the container body 6 by rotating the base 2 in the screwing direction with respect to the mouth portion 7a. When the base 2 is screwed into the mouth portion 7a, the claw portion 3e of the inner plug 3 is undercut engaged with the annular recess 7c. In this process, the inclined surface 3i of the claw portion 3e contacts the upper end of the mouth portion 7a, and guides the inner plug 3 to an appropriate position with respect to the mouth portion 7a. This facilitates fitting of the inner plug 3 into the mouth portion 7a.

  In order to pour out the contents of the filling space S, the lid body 5 is opened and the body portion of the outer layer body 7 is pressed. As a result, the filling space S is pressurized, the valve body 4c seated on the top wall 3a is separated from the top wall 3a, and the contents in the filling space S are the through holes 3b, the valve body 4c, the top wall 3a, , The gap between the elastic piece 4b and the valve body 4c, and is discharged from the extraction cylinder 2e through the outlet 2d.

  After the contents are poured out, the pressure on the outer layer body 7 is released. As a result, the pressure in the filling space S decreases, and the valve body 4c closes the through hole 3b, so that the introduction of outside air into the filling space S can be effectively prevented. Further, since the outer layer body 7 tries to return to its original shape by its own restoring force, the outer layer body 7 and the inner layer body 8 are in a negative pressure state, whereby the outer valve body 4d is moved to the top wall 2c. Air is introduced between the outer layer body 7 and the inner layer body 8 from the outside air introduction hole 7d through the opening 3m and the longitudinal groove 7e away from the vent 2f, and the outer layer is reduced in volume while the inner layer body 8 is reduced in volume. Body 7 is restored.

  Here, when the base 2 is unscrewed from the mouth portion 7a so as to remove the dispensing cap 1 from the mounted state shown in FIG. 1, the engagement strength of the flange 3j with respect to the annular convex portion 2h is the claw portion 3e. The engagement strength between the flange 3j and the annular protrusion 2h is released because it is smaller than the engagement strength with respect to the annular recess 7c. As a result, as shown in FIG. 2, even after the base 2 is removed, the inner plug 3 and the check valve 4 are retained by the claw portion 3e and retained on the container body 6, and the opening of the mouth portion 7a is closed. It is maintained in the state.

  As described above, in the pouring cap 1 of the present embodiment, even when the base 2 is screwed off from the container body 6 in an attempt to remove the pouring cap 1, the inner plug 3 and the check valve 4 are opened. Since the container body 6 is retained and retained while the opening of the portion 7a is closed, it is possible to prevent the content from being refilled.

  Further, in the pouring cap 1 of the present embodiment, the inner plug 3 and the check valve 4 can be incorporated in the base 2 in advance, and only the screwing cap 1 is screwed to the container body 6. Since the inner plug 3 can be assembled to the mouth portion 7a, the effect of preventing refilling can be obtained with a simple setting operation.

  Moreover, in the pouring cap 1 of this embodiment, since the claw portion 3e has a shape formed by a die having a bite structure, it is not necessary to provide a slide mechanism or the like on the die. The mold structure can be simplified.

  Further, in the container of the present embodiment, as the container main body 6, by adopting the one composed of the outer layer body 7 having the outside air introduction hole 7d and the inner layer body 8 provided inside the outer layer body 7, Contact between objects and outside air can be prevented more reliably.

  The dispensing cap and the container according to the present invention are not limited to this embodiment, and various modifications can be made within the scope according to the claims. For example, the shape, number, position, and the like of the first engaging portion and the first engaged portion, and the second engaging portion and the second engaged portion are not limited to the above-described embodiment, Various mechanisms for retaining and retaining the inner plug can be applied. Further, the outside air introduction hole 7d provided in the outer layer body 7 is not limited to being provided in the mouth portion 7a, and may be provided in the trunk portion or the bottom portion. In this case, the configuration of the outer valve body 4d is not necessary. Further, instead of providing the outer valve body 4d, the air vent 2f is set to be thin, and when the outer layer body 7 is pressed, the inner layer body 8 can be reduced in volume and the inner layer body 8 can be reduced in volume and hardly escape to the outside. It is also possible to adjust the size of the vent 2f so that air can be introduced when the outer layer body 7 is restored by releasing the pressure on the outer layer 7. Further, in the above embodiment, the base 2 is configured to be screw-engaged with the container body 6, but is not limited thereto, and for example, the base 2 is configured to be undercut-engaged with the container body 6 by stoppering. Also good. In addition, the container body to which the dispensing cap of the present invention is attached is not limited to a double container having an outer layer body and an inner layer body, and is a single layer structure container that can be volume-reduced and deformed as the contents are poured out. It is also possible.

1 Discharge cap 2 Base 2a Cylinder wall 2b Female thread 2c Top wall 2d Hole (contents outlet)
2e Pouring tube 2f Hole (vent)
2g Seal cylinder part 2h Annular convex part (2nd engaged part)
3 Inner plug 3a Top wall 3b Through hole 3c Recessed part 3d Annular wall 3e Claw part (first engaging part)
3f Projection piece 3g Projection part 3h Intermittent part 3i Inclined surface 3j Flange (second engagement part)
3k inner cylinder wall 3m opening 4 check valve 4a base 4b elastic piece 4c valve body 4d outer valve body 5 lid body 5a upper wall 5b outer peripheral wall 5c hinge 5d finger hooking part 5e seal part 6 container body 7 outer layer body 7a mouth part 7b Male thread 7c Annular recess (first engaged part)
7d Outside air introduction hole 7e Longitudinal groove 8 Inner layer body S Filling space

Claims (3)

A base that surrounds the mouth of the container body, has a cylindrical wall that is engaged and held by the mouth, and has a top wall that is connected to the cylindrical wall and has an outlet for the contents stored in the container body An inner wall covering the opening of the mouth and having a through-hole, and being retained inside the base by the mouth, and between the top wall and the ceiling wall, A check valve that is retained by the inner stopper to open and close the through hole, and
The inner plug engages with a first engaging portion that engages with a first engaged portion provided on an outer peripheral surface of the mouth portion, and a second engaged portion provided on an inner peripheral surface of the cylindrical wall. A second engaging portion that
An extraction cap, wherein an engagement strength of the first engagement portion with respect to the first engaged portion is greater than an engagement strength of the second engagement portion with respect to the second engaged portion. The first engaging portion is a claw portion depending from an outer edge portion of the top wall;
The pouring cap according to claim 1, wherein the first engaged portion is an annular recess provided on an outer peripheral surface of the mouth portion.   A container in which the dispensing cap according to claim 1 or 2 is attached to the container body, wherein the container body is provided with an outer layer body having an outside air introduction hole and an inner layer of the outer layer body. A container comprising: an inner layer body that takes in air between the outer layer body and the outer layer body in accordance with the extraction of the outer layer body, and that undergoes volumetric deformation.

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