JP2014055029A - Cap-provided container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap-provided container allowing installation and removal of an inner plug and a cap without co-rotation, when installing and removing the cap screwed into a screw part formed in the inner plug engaged in the mouth of a container.SOLUTION: A cap-provided container includes an inner plug 11 engaged in the mouth of the container and a cap screwed into the inner plug in a removable way, and a build-up part 16 is formed in an engagement groove 15 lower than an engagement protrusion piece 14. The constitution ensures reliable engagement of the engagement protrusion piece 14 in the engagement groove 15 currently having a flat bottom 15a by reducing thin wall parts of the formed engagement groove 15 itself and an outer peripheral wall 11j of the inner plug 11 to increase rigidity and thereby suppress spreading of the outer peripheral wall 11j and also prevents occurrence of turn-over of a tip corner 13a of an engaging protrusion 13 on mold releasing. Increase of the thickness of the engagement groove 15 improves the ESC (environment stress crack) resistant effect for contents and so on.

Description

  The present invention relates to a container with a cap, and is a container with a cap in which an inner stopper is fitted to a container mouth portion, and a cap is attached to and detached from a screw portion formed in the inner stopper, and the inner stopper is a cap when the cap is attached or detached. The cap can be securely attached and detached without rotating together.

As a container for liquid foods such as dressing, a container with a cap provided with a cap that can be attached and detached with a screw is used. For example, as shown in FIG. 4, the container with a cap 1 is made of glass or synthetic resin. An inner plug body 3 having an opening 3a made of synthetic resin is plugged into a mouth portion 2a of a container 2 such as a product, and the screw section 4a of the cap 4 is screwed into a screw section 3b formed on the inner plug body 3. Thus, the cap 4 can be attached and detached (see Patent Document 1).
In such a cap-equipped container 1, the outer peripheral surface of the mouth portion 2 a of the container 2 is formed in an annular shape so that the engaging peripheral strip 5 protrudes outward in order to fix and hold the inner plug body 3 to be plugged. In addition, a neck ring 2b is formed in an annular shape below the neck ring 2b.
On the other hand, the inner plug body 3 is provided with an opening 3a surrounded by a thinned breaking groove 3d in the partition wall 3c, and the opening 3a can be opened by pulling up the pull ring 3e during use. A pour tube 3f is formed so as to protrude upward so as to surround the opening 3a, and a screw portion 3b for the cap 4 is formed on the outer periphery of the pour tube 3f.
Further, the outer peripheral portion of the partition wall 3c of the inner plug body 3 is protruded downward to form inner and outer peripheral walls 3g and 3h. The inner peripheral surface of the outer peripheral wall 3h is engaged with the engagement peripheral strip 5 of the container 2. The engaging protrusion 6 to be joined protrudes inward and is formed into an annular shape, and the inner plug 3 is engaged with the engaging peripheral line 5 of the container 2 with the inner plug 3 being plugged into the mouth 2a of the container 2. The mating ridge 6 is engaged so that the fitted state can be maintained.

In such a container 1 with a cap, when the cap 4 is rotated, if the cap 4 and the inner plug body 3 rotate together, the cap 4 cannot be attached / detached and opened / closed.
As a detent of the container 1 with a cap, for example, there is one disclosed in Patent Document 1, and as shown in FIG. 5 and FIG. 6, as shown in FIGS. A plurality of locking protrusions 7 in the direction are formed, and the inner plug body 3 is locked in the vertical direction so as to divide the engaging protrusion 6 on the inner peripheral surface of the outer peripheral wall 3h to be plugged. A groove 8 is formed. Then, when the inner plug body 3 is plugged into the container 2, the locking protrusion 7 of the container 2 and the locking groove 8 of the inner plug body 3 are positioned and plugged in advance. By rotating the cap 4 and locking the locking protrusion 7 and the locking groove 8, the cap 3 is locked by the container 2 and does not rotate together when the cap 4 is rotated. 4 can be attached and detached from the screw portion 3b of the inner plug 3.

JP 2008-127052 A

  However, in such a container 1 with a cap, when the cap 4 and the inner plug body 3 are fixed by adhesion or solidification of the contents to the screw portion 3b after the start of use, the inner plug body is opened when the cap 4 is opened. Since the three locking grooves 8 are thin, they extend and spread over the locking protrusions 7 and may rotate together with the cap 4, and further measures are being demanded.

  The present invention has been made in view of the present situation. When the inner plug is fitted to the container mouth and the cap screwed into the screw formed on the inner plug is attached and detached, the inner plug and the cap are provided. Is intended to provide a container with a cap that can be attached and detached without rotating together.

In order to solve the above-mentioned problems of the prior art, a container with a cap according to claim 1 of the present invention comprises an inner plug fitted into the mouth of the container and a cap detachably screwed into the inner plug. A container with a cap provided,
The container is provided with an engaging peripheral line that protrudes from the outer peripheral surface of the mouth portion, and protrudes on the outer peripheral surface of the engaging peripheral surface to prevent the inner plug body from rotating. A piece is formed,
The inner plug body is formed with a screw portion to which the cap is attached and detached, and is provided with an outer peripheral wall fitted to the outer peripheral surface of the container mouth portion, and the inner peripheral surface of the outer peripheral wall is provided with the container An engagement protrusion that is engaged with the engagement periphery and maintains the fitted state, and an engagement groove that is engaged with the engagement protrusion so as to divide the engagement protrusion are formed. on the other hand,
When the inner plug and the container mouth are engaged, a built-up portion is formed in the locking groove below the locking protrusion.

  In the container with a cap according to claim 2 of the present invention, in addition to the structure according to claim 1, the protruding height of the build-up portion is 0.8 to 1.2 times the protruding height of the engaging protrusion. It is characterized in that it is formed.

  The cap-equipped container according to claim 3 of the present invention is characterized in that, in addition to the configuration according to claim 1 or 2, the build-up portion has a shape that can be engaged with the lower end of the locking protrusion. Is.

According to the container with a cap according to claim 1 of the present invention, even if the locking groove is formed, the locking groove itself and the outer wall portion of the inner plug body are improved in rigidity, and the locking groove gets over the locking protrusion. It is possible to prevent the rotation, and it is possible to improve the anti-rotation effect by reliably locking with the locking protrusion. In addition, it is possible to prevent the corners of the locking grooves from being turned over when the mold is released.
Furthermore, by increasing the thickness of the locking groove, it is possible to improve the ESC resistance effect (environmental stress cracking resistance) due to the contents and the like, and it is possible to expand the selection range of materials and the like.

  According to the container with a cap according to claim 2 of the present invention, it is possible to more effectively prevent the occurrence of turning.

  According to the cap-equipped container according to claim 3 of the present invention, the engagement holding force is obtained by engaging the build-up portion with the engagement protrusion even in the engagement groove portion having no engagement protrusion for retaining the attachment. The inner plug body can be securely fixed and held.

1 is a schematic cross-sectional view according to an embodiment of a container with a cap of the present invention, and FIG. It is an inside stopper object concerning one embodiment of a container with a cap of this invention, (a) is a sectional view and (b) is a bottom view. 1 is an enlarged view of a part of an embodiment of a container with a cap according to the present invention, wherein (a) is a sectional view of an inner plug, (b) is a sectional view of the container, and (c) is a sectional view in a fitted state. It is. It is a schematic sectional drawing of the conventional container with a cap. It is the schematic perspective view which expanded a part of conventional container with a cap. It is what expanded a part of the conventional container with a cap, (a) is sectional drawing of an inside plug body, and AA sectional drawing, (b) is sectional drawing of a container, (c) is sectional drawing of a fitting state. is there.

Hereinafter, an embodiment of a container with a cap of the present invention will be described in detail with reference to the drawings.
The cap-equipped container 10 of the present invention has the same basic structure as the cap-equipped container 1 already described with reference to FIG. 4 and is made of glass or synthetic resin as shown in FIG. As shown in FIGS. 1 to 3, an inner plug body 11 having a synthetic resin opening 11 a is plugged into a mouth portion 2 a of a container 2 made of a product, and a thread portion formed on the inner plug body 11. The cap 4 can be attached and detached by screwing the threaded portion 4a of the cap 4 into 11b. And the structure for preventing rotation of the inner plug body 11 with respect to the container 2 can be changed to improve the effect of preventing the co-rotation of the cap 4 and the inner plug body 11 when the cap 4 is attached and detached. .
In addition, in the specification, the fixed state is expressed separately, so the case where the inner plug body 11 and the mouth portion 2a are in the stoppered state is expressed as “engagement” for preventing co-rotation. The case of holding is expressed as “locking”.

In the container 10 with a cap according to the present invention, the outer peripheral surface of the mouth portion 2a of the container 2 is formed in an annular shape so that the engaging peripheral strip 12 protrudes outward in order to fix and hold the plug 11 to be plugged. Yes.
The engaging strip 12 of the container 2 has an inclined surface (conical surface) whose outer peripheral surface extends downward from the upper side and a vertical surface, a lower end thereof is a horizontal surface, and an inner plug at a corner of the vertical surface and the horizontal surface. 11 engaging ridges 13 are engaged.

On the other hand, the inner plug body 11 is provided with an opening 11a surrounded by a thin fracture groove 11d in the central partition plate 11c, and the opening 11a can be opened by pulling up the pull ring 11e during use. In addition, an extraction cylinder 11f is formed so as to protrude upward so as to surround the opening 11a, and guides the extraction of the contents.
An intermediate part partition plate 11g is formed horizontally on the outer periphery of the middle part of the pouring cylinder 11f, and a screw cylinder 11h is formed on the outer periphery of the intermediate part partition plate 11g so as to protrude downward. The screw portion 11b is formed on the outer periphery of the screw cylinder 11h.
Further, the inner plug body 11 is formed with an outer peripheral partition plate 11i horizontally at the lower end portion of the screw cylinder 11h, and an outer peripheral wall 11j is formed on the outer peripheral portion of the outer peripheral partition plate 11i so as to protrude downward. An inner peripheral wall 11k is formed on the inner peripheral portion of the outer peripheral partition plate 11i to form a double cylinder, and the mouth portion 2a of the container 2 is positioned between the outer peripheral wall 11j and the inner peripheral wall 11k. The upper end surface of 2a is fitted on the outer peripheral partition plate 11i.

In addition, an engagement protrusion 13 that engages with the engagement periphery 12 of the container 2 protrudes inwardly on the inner peripheral surface of the outer peripheral wall 11j of the inner plug body 11 to form a substantially annular shape (a locking groove 15 portion described later). The engagement protrusion 13 of the inner plug body 11 is engaged with the engagement peripheral line 12 of the container 2 in a state where the inner plug body 11 is plugged into the mouth portion 2a of the container 2, and is fitted. Can be held.
The engagement protrusion 13 of the inner plug body 11 has, for example, an upper inclined surface having a large inclination angle in the central axis direction and a lower portion having a small inclination angle in the central axis direction. The lower inclined surface has a substantially hook shape so as to be smoothly continuous with the protruding portion interposed therebetween, and the protruding portion and the upper inclined surface above the protruding portion are engaged with the engaging peripheral strip 12.

And as shown in FIGS. 1-3, in the container 10 with a cap of this invention, as shown in FIGS. 1-3, the locking protrusion 14 of the vertical direction on the outer peripheral surface of the engagement periphery 12 of the opening 2a of the container 2 is shown. A plurality of are formed.
On the other hand, in the inner plug body 11, a locking groove 15 that locks with the locking protrusion 14 is formed on the inner peripheral surface of the outer peripheral wall 11j so as to divide the engaging protrusion 13 in the vertical direction. The number of the locking grooves 15 may be the same as the number of the locking protrusions 14 or a different number. Further, all the locking protrusions 14 and the locking grooves 15 may be locked, or a part of the locking protrusions 14 and the locking grooves 15 may be locked. good.

Furthermore, in this container 10 with a cap, when the inner plug body 11 is engaged, the built-up portion 16 is formed below the lower end portion 15c of the locking groove 15 which is a portion to which the locking protrusion 14 is locked. It is.
The build-up portion 16 of the locking groove 15 includes a groove bottom portion (bottom portion of the outer peripheral groove in the inner plug body 11) 15a and both groove side portions (circumferential direction in the inner plug body 11). The left and right side surface portions 15b are continuously formed with the built-up portion 16, and the built-up portion 16 is formed to protrude to the center side of the inner plug body 11, and when the inner plug body 11 is engaged, It is located below the lower end of the locking protrusion 14 of the container 2.
Accordingly, the upper portion of the locking groove 15 is a groove having a rectangular cross section so that the locking protrusion 14 can be locked, and the built-up portion 16 protrudes below the locking groove 15. When the inner plug body 11 is plugged into the container 2, the built-up portion 16 is engaged so as to get over the locking protrusion 14, and the locking protrusion 14 and the locking groove 15 Will be locked.

In this way, at least a part of the locking groove 15 (at least a part below the lower end part 15c) other than the part where the locking protrusion 14 is locked is reinforced by the built-up part 16, and By reducing the thin-walled portion, the locking groove 15 itself and the outer wall portion 11j of the inner plug body 11 are not easily extended and spread. That is, even if the locking groove 15 is formed in the outer peripheral wall 11j of the inner plug body 11 with respect to the locking groove 8 (see FIGS. 5 and 6) having a flat bottom, the locking groove 15 itself and the inner plug body are formed. 11 can secure the rigidity of the outer wall portion 11j, and can be securely locked to the locking projection piece 14 to improve the anti-rotation effect.
In addition, according to experiment, although the anti-rotation effect changes with the materials of the inside plug body 11, it has confirmed that it is a 5 to 40% improvement in rotational torque.

  Further, it is possible to prevent the turning-up of the front corner portion 13a of the locking groove 15 during the mold release. In the middle plug body 3 of the conventional structure, as shown in FIG. 6A, when the mold is released, both ends of the engaging protrusion 6 of the locking groove 8 of the inner plug body 3 are undercut and muffled. In some cases, the turning 6a that is pulled out and the resin is spread outward may be generated, resulting in a poor appearance. In the inner plug body 11, the locking groove 15 is reinforced and improved in rigidity by the built-up portion 16. Is prevented and the occurrence of turning is prevented.

  Furthermore, since the thickness of the locking groove 15 is increased at the build-up portion 16, the thin wall portion of the inner plug body 11 is reduced, and the locking groove 15 itself and the outer wall portion 11 j of the inner plug body 11 extend and expand. This makes it difficult to improve the ESC resistance (environmental stress cracking resistance) due to the contents, etc., and expands the selection range of materials, etc., compared to securing the necessary ESC resistance in the thin state of the past. You can also

The protruding height of the built-up portion 16 of the locking groove 15, that is, the height (building height) H from the groove bottom portion 15a of the locking groove 15 is the engagement protrusion from the inner peripheral surface of the outer peripheral wall 11j. The protrusion height h of 13 is 0.8 to 1.2 times.
The protruding height H of the built-up portion 16 can be up to the same height as the engaging protrusion 13 of the outer peripheral wall 11j of the inner plug body 11 in which the locking groove 15 is formed. In this case, the built-up portion 16, the lower side of the locking groove 15 is filled, and the effect of reinforcing and improving rigidity is increased by building up as much as possible.
However, these engaging protrusions 13 and the built-up portion 16 of the inner plug body 11 are undercut in the molding of the synthetic resin, and are removed by using elastic deformation of the synthetic resin at the time of molding release. As the height H of the built-up portion 16 increases, it becomes difficult to release the mold.
On the other hand, if the protruding height H of the built-up portion 16 is too low, the rigidity cannot be improved due to the built-up.

Therefore, in the container 10 with a cap of the present invention, the protrusion height H of the built-up portion 16 of the locking groove 15 is 0.8 to the protrusion height h of the engagement protrusion 13 from the inner peripheral surface of the outer peripheral wall 11j. By setting the ratio to 1.2 times, the rigidity of the inner plug body 11 is improved, and at the same time, the inner plug body 11 expands due to the undercut in the mold release of the inner plug body 11, but the locking groove 15 portion is also involved. It spreads as much as the undercut portion of the joint ridge 13, and a load is applied to a part or stress is not concentrated, and it can be formed into a predetermined shape, and the tip corner portion 13 a of the engagement ridge 13 can be formed. It can also prevent turning.
Thereby, the latching protrusion 14 and the latching groove | channel 15 can be latched reliably, and the co-rotation with the cap 4 and the inside plug body 11 can be prevented more reliably.

Furthermore, in the container 10 with a cap according to the present invention, the built-up portion 16 of the locking groove 15 has a shape that can be engaged with the lower end of the locking protrusion 14, and the engagement protrusion 13 for fitting and holding is formed. By engaging the built-up portion 16 with the locking protrusion 14 even in the portion of the locking groove 15 that is not formed, the fitting holding force can be further increased, and the inner plug 11 can be securely fixed to the container 2. It is like that.
The shape of the built-up portion 16 is preferably a shape that can be brought into contact with and engaged with the lower end of the locking projection piece 14. In the case of the present embodiment, the outer peripheral surface of the locking projection piece 14 is a vertical surface and an inclined surface (conical surface) spreading downward from above, and the lower end surface is a horizontal surface. ), The shape of the built-up portion 16 is an inclined surface 16b having a large inclination angle in the central axis direction on the upper side from the protruding protrusion 16a, and an inclined surface 16c having a small inclination angle in the central axis direction on the lower side. Thus, a substantially hook shape is formed so as to be smoothly continuous with the protruding portion 16a interposed therebetween. Further, the upper part of the projecting part 16a has a shape similar to the engaging ridge 13, and the lower part is slightly different in inclination angle because the built-up part 16 and the engaging ridge 13 converge at the same point. .
Therefore, the corner portion at the lower end of the outer periphery of the locking protrusion 14 is engaged with the upper inclined surface of the built-up portion 16, and in addition to the engagement between the engagement peripheral stripe 12 and the engagement protrusion 13, the inner plug The fitting state of the body 11 to the container 2 is more reliably maintained.

In the above embodiment, the description of the synthetic resin constituting the inner plug is omitted, but commonly used polyethylene, polypropylene, or the like can be used.
Moreover, the container can use the material normally used, such as glass, a polyethylene terephthalate, a polypropylene.
As mentioned above, although embodiment which concerns on this invention was described, a specific structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.
For example, although the screw cylinder 11h is provided separately from the extraction cylinder 11f, a screw portion may be provided on the outer periphery of the extraction cylinder as shown in FIG.
Moreover, you may apply to the inside plug with a cap which is not provided with the partition plate 11c and the pull ring 11e, and a sealing state is maintained by screwing of a cap.

2 Container 2a Mouth 6 Engaging protrusion 6a Turning 10 Container 11 with cap 11 Plug 11a Opening portion 11b Threaded portion 11c Center partition plate 11d Breaking groove 11e Pull ring 11f Outlet tube 11g Intermediate partition plate 11h Screw tube 11i Outer circumference Partition plate 11j Outer peripheral wall 11k Inner peripheral wall 12 Engaging peripheral strip 13 Engaging protrusion 13a Tip corner 14 Locking protrusion 15 Locking groove 15a Groove bottom 15b Groove side 15c Lower end 16 Overlaying portion 16a Protruding portion 16b Large inclined surface 16b Small inclined surface H Projected height h of the built-up part Projected height of the engaging protrusion

Claims (3)

A container with a cap comprising an inner plug fitted to the mouth of the container and a cap that is detachably screwed into the inner plug,
The container is provided with an engaging peripheral line that protrudes from the outer peripheral surface of the mouth portion, and protrudes on the outer peripheral surface of the engaging peripheral surface to prevent the inner plug body from rotating. A piece is formed,
The inner plug body is formed with a screw portion to which the cap is attached and detached, and is provided with an outer peripheral wall fitted to the outer peripheral surface of the container mouth portion, and the inner peripheral surface of the outer peripheral wall is provided with the container An engagement protrusion that is engaged with the engagement periphery and maintains the fitted state, and an engagement groove that is engaged with the engagement protrusion so as to divide the engagement protrusion are formed. on the other hand,
A container with a cap, wherein a built-up portion is formed in the locking groove below the locking protrusion when the inner plug and the container mouth are engaged.   2. The container with a cap according to claim 1, wherein a protruding height of the build-up portion is formed to be 0.8 to 1.2 times a protruding height of the engaging protrusion.   The container with a cap according to claim 1 or 2, wherein the build-up portion has a shape that can be engaged with a lower end of the locking projection piece.

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