Container with inner stopper

Abstract

To provide a container with an inner plug capable of attaching and detaching the inner plug with a simple operation.SOLUTION: A container with an inner plug according to the present invention comprises a container body 1 and an inner plug 2 fitted and held in a mouth and neck portion 11 of the container body 1. The inner plug 2 comprises an inner plug body 3 and an annular body 4. The inner plug body 3 has an outer wall protrusion 33 on a peripheral wall 32. The annular body 4 has an upper end edge 41b connectable to a lower end edge 33b of the outer wall protrusion 33, a protruding end part 42 located on the back surface of a hanging piece 35 of the inner plug body 3, and an inner wall protrusion 41. The annular body 4 connects the end edge 41b to the lower end edge 33b, and the protruding end part 42 presses against the back surface of the hanging piece 35, making it impossible to remove the inner plug body 3 from the mouth and neck portion 11. On the other hand, the connection between the lower end edge 33b and the upper end edge 41b is released by rotation around the peripheral wall 32 and the hanging piece 35, and a slide along the shaft center of the container body 1 is guided, causing the protruding end part 42 to retreat from the hanging piece 35, thereby making it possible to remove the inner plug body 3 from the mouth and neck portion 11.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a container with an inner plug, the inner plug of which can be attached and detached with a simple operation. [Background technology]

[0002] Conventionally, containers with inner plugs have been known as containers for storing lotions and the like, in which an inner plug is provided at the open end of the mouth and neck of the container body, and the contents in the container body can be discharged from a spout provided in the inner plug (see, for example, Patent Document 1). Widely used containers with inner plugs have an inner wall with a spout and a peripheral wall suspended from the outer edge of the top wall, and a protrusion provided on the inner peripheral surface of the peripheral wall is undercut-fitted into a locking protrusion provided on the outer peripheral surface of the mouth and neck of the container body, so that the inner plug is detachably attached to the mouth and neck of the container body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2011-213391 A Summary of the Invention [Problem to be solved by the invention]

[0004] When using such a container with an inner stopper as a refill container, the inner stopper must be removed when refilling the contents. However, inner stoppers generally have a small diameter and nowhere to hook one's fingers, so they must be pried open to remove, making the refilling process difficult.

[0005] In view of the above-mentioned problems, an object of the present invention is to provide a container with an inner stopper which can be easily attached and detached. [Means for solving the problem]

[0006] The container with an inner stopper of the present invention, which has been developed to achieve the above object, is a container with an inner stopper, comprising: a container body for storing contents; an inner stopper that is removably fitted and held in the mouth and neck part of the container body and enables the contents to be poured out through a spout; and a cover cap that stores the inner stopper inside and is attached to the outside of the mouth and neck part by screwing, The inner plug is a top wall in which the spout is formed and which keeps the open end of the mouth and neck part sealed; a peripheral wall provided on the outer edge of the top wall and which surrounds the mouth and neck part; and at least one hanging piece which is suspended from the lower end of the peripheral wall and has a protrusion which is undercut and fitted into a convex part formed on the outside of the mouth and neck part to prevent the top wall from coming off the open end of the mouth and neck part; an annular body that is rotatable around the peripheral wall and the hanging piece and slidably held along the axis of the container body and surrounds the peripheral wall and the hanging piece; The peripheral wall of the inside plug body has an outer wall protrusion, The annular body includes an upper end edge connectable to a lower end edge of the outer wall protrusion, a protruding end portion located on a back surface of the hanging piece, and an inner wall protrusion, The annular body connects the upper edge of the inner wall convex portion to the lower edge of the outer wall convex portion of the inside plug body, and the pointed end presses the back surface of the hanging piece to suppress outward elastic deformation of the hanging piece, thereby preventing the projection of the hanging piece from climbing over the convex portion of the neck portion to release the undercut fit, thereby making it impossible to pull out and remove the inside plug body from the open end of the neck portion. By rotating the inner plug body around the peripheral wall and hanging piece, the connection between the lower edge of the outer wall convex portion and the upper edge of the inner wall convex portion is released, and a slide along the axis of the container body is guided, whereby the pointed end is retracted from the hanging piece and the hanging piece is allowed to elastically deform outwardly so that the protrusion of the hanging piece overcomes the convex portion of the neck portion, releasing the undercut engagement and allowing the inner plug body to be pulled out and removed from the open end of the neck portion.

[0007] In addition, in the container with a stopper of the present invention, it is preferable that the outer wall convex portion of the stopper body has an upper edge portion that is inclined and connected to the lower edge, and the inner wall convex portion of the annular body has a lower edge portion that is inclined equivalently to the upper edge and connected to the upper edge, the upper edge portion and the lower edge portion are able to abut against each other, and the outer wall convex portion functions as a sliding guide for the inner wall convex portion when the stopper is attached to the mouth and neck portion.

[0008] In addition, in the container with an inner stopper of the present invention, it is preferable that the outer wall convex portion and the inner wall convex portion have engaging portions at the lower edge and the upper edge, respectively, which can be freely attached and detached to each other in the direction in which the annular body rotates in a linked state between the lower edge and the upper edge. Effect of the Invention

[0009] According to the container with an inner stopper of the present invention, the inner stopper that is attached to the mouth and neck portion of the container body is composed of two parts: the inner stopper body that fits into the mouth and neck portion via an undercut, and the annular body that surrounds it. The inner stopper body and the annular body are linked together, and a protruding end portion of the annular body presses down from the outside against the fitting position between the inner stopper body and the mouth and neck portion, thereby preventing the inner stopper body from being unintentionally pulled out or removed from the mouth and neck portion during use, etc. (locked state).

[0010] On the other hand, by grasping the annular body with the fingers and rotating it around the inner plug body to release it from its connection with the inner plug body and then sliding it upward (pulling it up), the pointed end of the annular body will no longer press down on the fitting position between the inner plug body and the neck portion, and the free inner plug body will be able to freely elastically deform outward, releasing it from its engagement with the neck portion, and the inner plug body can be easily pulled out of the neck portion and removed (unlocked state).

[0011] Therefore, according to the present invention, the plug body can be easily changed between a locked state and an unlocked state by rotating and sliding the annular body, and there is no need to directly grasp the plug body with the fingers and pry it open, and the plug body (inner plug) can be easily removed from the mouth and neck portion by manipulating the annular body alone.

[0012] Furthermore, according to the present invention, an outer wall convex portion is provided on the peripheral wall of the plug body, an inner wall convex portion is provided on the inner wall surface of the annular body, and an equivalent inclination is imparted to the upper edge portion of the outer wall convex portion and the lower edge portion of the inner wall convex portion. Therefore, when the plug is reset in the neck portion, by rotating the annular body, the lower edge portion of the inner wall convex portion slides along the upper edge portion while abutting against the upper edge portion of the outer wall convex portion, and the plug body can be easily set in the locked state.

[0013] According to the present invention, by providing a detachable fitting portion at the connecting position between the inside plug body and the annular body, it is possible to prevent unintended rotation of the annular body and reliably maintain the locked state. The fitting portion can also function as a rotation stopper for the annular body. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a diagram showing a schematic view of one embodiment of a container with an inner plug according to the present invention, where (a) is a plan view and (b) is a cross-sectional view taken along the line AA in (a). [Diagram 2] FIG. 2 is a diagram showing the container with an inner plug in FIG. 1 disassembled into its individual parts, where (a) shows the individual parts lined up vertically, and (b) shows the outer surface of the inner plug body. [Diagram 3]FIG. 11 is an explanatory diagram showing the procedure for removing the inner plug, along with the positional relationship between one outer wall convex portion and one inner wall convex portion; (a) is a diagram showing the state in which the inner plug body is locked to the open end of the neck portion by the ring-shaped body; (b) is a diagram showing the state in which the ring-shaped body is rotated to release the lock on the inner plug body by the ring-shaped body; (c) is a diagram showing the state in which the ring-shaped body has been slid upward to free the back surface of the hanging piece; and (d) is a diagram showing the state in which the ring-shaped body has been slid further upward, causing the hanging piece to elastically deform outward and disengage the inner plug body from the open end of the neck portion. [Figure 4] FIG. 13 is a diagram showing the state in which the inner plug is attached to the neck portion. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an embodiment of a container with an inner plug according to the present invention, in which (a) is a plan view and (b) is a cross-sectional view taken along the line AA in (a). Fig. 2 is a diagram showing the container with the stopper in Fig. 1 disassembled into its individual parts, (a) showing the individual parts arranged vertically, and (b) showing the outer surface of the stopper body. Fig. 3 is an explanatory diagram showing the procedure for removing the stopper, together with the positional relationship between one outer wall protrusion and one inner wall protrusion, (a) showing the stopper body locked to the open end of the mouth and neck by the ring-shaped body, (b) showing the stopper body unlocked by the ring-shaped body being rotated, (c) showing the ring-shaped body being slid upward to free the back surface of the hanging piece, and (d) showing the stopper body being slid further upward to elastically deform the hanging piece outward, and the stopper body being released from the open end of the mouth and neck. Fig. 4 is a diagram showing the stopper being attached to the mouth and neck.

[0016] 1 to 4, reference numeral 1 denotes a container body that contains the contents, and reference numeral 2 denotes an inside plug that is detachably fitted into and held at an open end 11a of a mouth neck portion 11 of the container body 1.

[0017] The container body 1 has a cylindrical body 12 with a bottom having a filling space inside for the contents, and a cylindrical neck portion 11 located at the upper end of the body 12 and having a smaller diameter than the body 12. The neck portion 11 is composed of a lower cylindrical portion 13a having a male thread 14 on its outer circumferential wall, and an upper cylindrical portion 13b having a smaller diameter than the lower cylindrical portion 13a and having an open end 11a at its upper end. The outer circumferential wall of the upper cylindrical portion 13b is provided with a protrusion 15 consisting of an annular rib that can be fitted with the inner plug body 3 of the inner plug 2 described below.

[0018] The container body 1 can be manufactured using a material such as synthetic resin, but the material is not particularly limited. In addition, in this embodiment, a cylindrical container body 1 is shown as an example, but the shape of the container body 1 can be appropriately changed based on the type of content, the design of the container, the purpose, etc., and is not limited to the shape shown in the figure.

[0019] The inner plug 2 is composed of an inner plug body 3 which is removably fitted into the neck portion 11, and an annular body 4 which is held rotatably on the outside of the inner plug body 3 and slidably along the axis L of the container body 1.

[0020] The inside plug body 3 has a top wall 31, a peripheral wall 32 suspended from the outer edge of the top wall 31, and a plurality of hanging pieces 35 suspended from the lower end of the peripheral wall 32.

[0021] The top wall 31 has a spout 31a in the center for dispensing the contents contained in the container body 1, and a ring portion 31b suspended from its underside is fitted into the opening end 11a of the container body 1, thereby keeping the opening end 11a sealed.

[0022] The peripheral wall 32 is positioned so as to surround the mouth and neck portion 11, and has a plurality of outer wall protrusions 33 on its outer wall surface, and an annular rib 34 that connects the upper ends of the plurality of outer wall protrusions 33. In this embodiment, the outer wall protrusions 33 are provided at eight locations at intervals of 45° around the axis L of the container body 1, but the number can be changed as appropriate and is not limited to that shown in the figure. The outer wall protrusions 33 are in an inverted trapezoid shape having an inclined upper edge 33a on one side, and a recess 33c is provided at the joint between the upper edge 33a and the lower edge 33b.

[0023] The hanging piece 35 is thinner than the peripheral wall 32 and has a protrusion 36 on its inner wall surface, which can be undercut-fitted into a protrusion 15 provided on the outer wall surface of the neck portion 11 to hold the top wall 31 (ring portion 31b) at the opening end 11a. The hanging piece 35 can be formed from a single annular piece, but by configuring it from multiple thin pieces spaced apart as shown in the figure, the fitting force with the neck portion 11 can be reduced, and when the inside plug 2 is removed from the neck portion 11 as described below, the hanging piece 35 is easily elastically deformed and can be easily removed with little force. In addition, in this embodiment, the hanging pieces 35 are provided below the outer wall convex portions 33 and in the same number as the outer wall convex portions 33, but the formation positions and number can be changed as appropriate and are not limited to those shown in the figure.

[0024] The annular body 4 is positioned so as to surround the peripheral wall 32 and the hanging piece 35 of the inside plug body 3, and the inner wall surface is provided with a plurality of inner wall protrusions 41 and a protruding end 42 at the lower end. The inner wall protrusions 41 are provided at the same intervals and in the same number as the outer wall protrusions 33 to link with them (in the figure, there are eight at 45° intervals around the axis L of the container body 1). The inner wall protrusions 41 are trapezoidal in shape with an inclined lower edge 41a on one side, and a protrusion 41c is provided at the joint between the lower edge 41a and the upper edge 41b.

[0025] Also, the reference numeral 5 in the figure denotes a cover cap. The cover cap 5 is composed of a top wall 51 and a peripheral wall 52, and has a female thread 53 on the inner wall surface of the peripheral wall 52, which is screwed into a male thread 14 provided on the outer peripheral wall of the lower cylindrical part 13a of the neck part 11 of the container body 1. The cover cap 5 can be manufactured using a material such as synthetic resin, but the material is not particularly limited. Also, the reference numeral 6 denotes a packing disposed on the lower surface of the top wall 51 of the cover cap 5, which keeps the spout 31a of the inside plug body 3 in a liquid-tight state, and a flexible material such as rubber can be used. The packing 6 is fitted and held on the lower surface of the top wall 51 of the cover cap 5 by an undercut, and is also held by being attached with an adhesive or the like.

[0026] Next, the procedure for removing the inner plug 2 will be described with reference to FIG. 3(a), the upper edge 41b of the inner wall protrusion 41 of the annular body 4 and the lower edge 33b of the outer wall protrusion 33 of the inside plug body 3 are connected, and the recess 33c and the protrusion 41c are detachably fitted into each other through an undercut. Furthermore, the protruding end 42 of the annular body 4 holds down the fitting position between the projection 36 of the hanging piece 35 and the projection 15 of the neck portion 11 from the back side of the hanging piece 35. This restricts the outward elastic deformation of the hanging piece 35, preventing the projection 36 from climbing over the projection 15 to release the undercut fitting, and makes it impossible to pull out or remove the inside plug body 3 from the neck portion 11.

[0027] 3(b), the engagement between the recess 33c and the protrusion 41c is released, and the connection between the upper edge 41b and the lower edge 33b is released. The rotation of the ring-shaped body 4 is stopped when the side of the inner wall protrusion 41 (the other side of the lower edge 41a) comes into contact with the side of the outer wall protrusion 33 (the other side of the upper edge 33a), as shown by the two-dot chain line in the figure.

[0028] Next, as shown in Figure 3(c), when the ring-shaped body 4 is slid upward along the axis L of the container body 1, the lower edge 41a of the inner wall protrusion 41 abuts against the upper edge 33a of the outer wall protrusion 33 and slides upward along the upper edge 33a. The sliding of the ring-shaped body 4 is stopped when the annular recess 43 provided on the inner wall surface of the ring-shaped body 4 fits into the annular rib 34 provided on the outer surface of the peripheral wall 32 of the inside plug body 3. As a result, the protruding end 42 retreats from the back surface of the hanging piece 35 (the fitting position between the protrusion 36 of the hanging piece 35 and the protrusion 15 of the mouth neck portion 11), and the lock of the inside plug body 3 by the ring-shaped body 4 is released.

[0029] 3(d), when the annular body 4 is pulled upward with the annular recess 43 and the annular rib 34 engaged, the thin-walled hanging piece 35 elastically deforms outward and the protrusion 36 overcomes the convex portion 15, releasing the engagement between the inner plug body 3 and the mouth / neck portion 11. As a result, the ring portion 31b of the inner plug body 3 can be pulled out from the open end 11a of the mouth / neck portion 11, and the inner plug body 3 together with the annular body 4 can be easily removed from the mouth / neck portion 11.

[0030] The removed inner plug 2 can be reused by reattaching it to the mouth and neck portion 11 of the container body 1 after filling or replacing the contents in the container body 1. Since the inner plug 2 can be separated into parts, it can also be reused by replacing only a part of it (the inner plug body 3 or the annular body 4).

[0031] When attaching the inside plug 2 to the neck portion 11 again, first, the inner wall surface of the peripheral wall 32 of the inside plug body 3 is fitted along the outer wall surface of the neck portion 11 (upper tubular portion 13b). As a result, the ring portion 31b is inserted along the inner wall surface of the open end 11a of the neck portion 11, and the hanging piece 35 made of a thin piece elastically deforms outward, causing the protrusion 36 to ride over the convex portion 15 of the neck portion 11 and engage with the undercut, so that the inside plug body 3 is fitted and held in the neck portion 11. From this state, as shown in Figure 4, the annular body 4 is pressed downward while being rotated around the peripheral wall 32 of the plug body 3, so that the inclined lower edge 41a of the inner wall convex portion 41 of the annular body 4 abuts against the inclined upper edge 33a of the outer wall convex portion 33 of the plug body 3, and the plug 2 can be easily set to the locked state shown in Figure 3(a) by sliding downward along the upper edge 33a. [Industrial Applicability]

[0032] The container with an inner stopper of the present invention can be used as a container for storing liquid cosmetics, medicines, detergents, food and beverages, etc., and in which the inner stopper can be attached and detached with a simple operation, and in particular as a container with an inner stopper that is suitable as a refill container. [Explanation of symbols]

[0033] 1 Container body 11 Mouth and neck 11a Open end 12 Torso 13a Lower cylindrical part 13b Upper cylindrical part 14 Male thread 15 Convex 2 Inner stopper 3. Inner stopper body 31 Top wall 31a spout 31b Ring section 32 Peripheral wall 33 Exterior wall protrusion 33a Upper edge 33b Lower edge 33c Recess 34 Circular rib 35 hanging piece 36 Protrusion 4. Circular bodies 41 Inner wall protrusion 41a Lower edge 41b Upper edge 41c Convex 42 Tip 43 Annular recess 5 Cover cap 51 Top wall 52 Peripheral wall 53 Female thread 6. Packing

Claims

1. A container with an inner plug, comprising: a container body for storing contents; an inner plug that is detachably fitted and held in the mouth and neck part of the container body and enables the contents to be poured out through a spout; and a cover cap that stores the inner plug inside and is attached to the outside of the mouth and neck part by screwing, The inside plug is a top wall in which the spout is formed and which keeps the open end of the mouth and neck part sealed; a peripheral wall provided on the outer edge of the top wall and surrounding the mouth and neck part; and at least one hanging piece that is suspended from the lower end of the peripheral wall and has a protrusion that is undercut-fitted into a protrusion formed on the outside of the mouth and neck part to prevent the top wall from coming off the open end of the mouth and neck part; an annular body that is rotatable around the peripheral wall and the hanging piece and slidably held along the axis of the container body and surrounds the peripheral wall and the hanging piece; The peripheral wall of the inside plug body has an outer wall protrusion, The annular body includes an upper end edge connectable to a lower end edge of the outer wall protrusion, a protruding end portion located on a back surface of the hanging piece, and an inner wall protrusion, The annular body connects the upper edge of the inner wall convex portion to the lower edge of the outer wall convex portion of the inside plug body, and the pointed end presses the back surface of the hanging piece, suppressing the outward elastic deformation of the hanging piece and preventing the projection of the hanging piece from climbing over the convex portion of the neck portion to release the undercut fit, thereby making it impossible to pull out and remove the inside plug body from the open end of the neck portion. a rotating portion of the inner plug body around the peripheral wall and hanging piece to release the connection between the lower edge of the outer wall convex portion and the upper edge of the inner wall convex portion, and to guide the sliding along the axis of the container body, thereby retracting the pointed end from the hanging piece and allowing the hanging piece to elastically deform outwardly to cause the protrusion of the hanging piece to overcome the convex portion of the neck portion, thereby releasing the undercut engagement and allowing the inner plug body to be pulled out and removed from the open end of the neck portion.

2. 2. The container with a stopper according to claim 1, wherein an outer wall convex portion of said stopper body has an upper edge portion that is inclined and connected to said lower edge, and an inner wall convex portion of said annular body has a lower edge portion that is inclined similarly to said upper edge and connected to said upper edge, said upper edge portion and said lower edge portion being able to abut against each other, and said outer wall convex portion functions as a sliding guide for said inner wall convex portion when said stopper is attached to said neck portion.

3. A container with a stopper as described in claim 1 or 2, characterized in that the outer wall convex portion and the inner wall convex portion have fitting portions at the lower end edge and the upper end edge, respectively, that can be freely attached and detached to each other in the direction in which the annular body rotates in a linked state between the lower end edge and the upper end edge.

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