JP5171358B2 - Dispensing inner stopper - Google Patents

Description

  The present invention relates to an inside plug for pouring that is attached to the inside of the mouth and neck of a container and can easily return the content liquid from the pouring opening after pouring out the content liquid in the container. .

Some containers have a dispensing stopper attached to the mouth and neck of the container. In such a container, by removing the cap, the content liquid flows out to the object through the dispensing opening formed at the bottom of the dispensing plug. A container equipped with such an inside plug for pouring is frequently used because the content liquid can be discharged in an appropriate amount through the pouring opening.
According to the technique of the following Patent Document 1, the inner stopper for pouring has a fitting cylinder that fits into the mouth and neck of the container, and a substantially cylindrical shape that is provided above the fitting cylinder and serves as a spout for the content liquid. A pouring tube and a flat bottom portion (partition wall) disposed in the horizontal direction at the bottom of the pouring tube are provided. The bottom part is provided with a removal part in which a cutting groove whose periphery is a thin part is provided. By removing the pulling ring attached to the removal part, an extraction opening (extraction hole) is formed, and the inside of the container Can be discharged from the pouring hole. The opening shape of the extraction hole is a rounded rhombus, and is formed in the central wall portion of the circular bottom.

According to the technique of the following Patent Document 2, the inner stopper for pouring has a substantially bottomed cylindrical shape, and a flange-shaped mounting portion that is engaged with the upper end portion of the mouth / neck portion of the container is provided outside the upper edge portion. And a spout for the content liquid in the container is formed inside. In the bottom portion of the pouring inner plug, there are a plurality of pouring openings (pouring holes) extending in the circumferential direction from the lower portion of the peripheral wall of the pouring inner plug (three at 120 degree intervals). ) Is formed.
The bottom portion of the dispensing inner plug is plate-shaped and is formed so that the central wall portion protrudes in a substantially conical shape and gradually decreases from the central wall portion toward the lower peripheral wall of the dispensing inner plug. Yes.
JP 2000-203619 A Japanese Patent Laid-Open No. 10-175658

When the container disclosed in Patent Document 1 causes the contents liquid to flow out of the container, the contents liquid is poured out while the container is tilted. The content liquid that has once flowed out of the hole into the pouring cylinder and into the pouring cylinder (hereinafter referred to as the inside of the inner lid) is returned from the inside of the inner lid to the container through the pouring hole.
However, since the shape of the bottom part described in Patent Document 1 is a plane extending in the horizontal direction, the content liquid remains on the plane, and the remaining content liquid is dried and solidified.
In the inner plug disclosed in Patent Document 2, a surface that descends downward is formed from the central wall portion of the bottom portion to the peripheral wall portion that is located on the outer peripheral portion of the bottom portion, and toward the dispensing opening side that is located on the peripheral wall portion side of the bottom portion. The content liquid is allowed to flow down.

  The inside plug for pouring of patent document 2 which is this cup shape has a corner formed in a linear shape at the connecting portion between the lower portion and the bottom portion of the peripheral wall, and when the peripheral wall is vertical, the bottom portion is on the peripheral wall side. Since it is inclined low, the angle is narrow and acute. Thus, if there is a corner at the joint between the peripheral wall and the bottom, the content liquid tends to enter the corner and remain, and then the content liquid solidifies. Increasing the angle of inclination at the bottom of the liquid in order to allow the liquid to flow smoothly from the center to the outside, the corners of the connecting part become narrower. . Further, when the solidified residue accumulates in the corners, the residue absorbs the content liquid, and the solidified product gradually grows every time the container is used. Thus, when the content liquid is solidified, the appearance is also deteriorated, which is uncomfortable for the user and unfavorable for hygiene.

  The present invention has been made in view of such circumstances, and the content liquid that has once flowed out of the container through the dispensing opening can be smoothly returned from the dispensing opening into the container. Another object of the present invention is to provide a pouring inner stopper capable of preventing or suppressing contamination due to the residual content liquid at the bottom.

In order to solve the above problems, the dispensing inner plug of the present invention
A side wall portion having a substantially cylindrical shape, a central wall portion having a smooth surface whose upper surface protrudes upward, a plurality of connection portions for connecting the lower end of the side wall portion and the outer peripheral end of the central wall portion, and each connection In the middle plug for pouring formed with the pouring opening provided between the parts, the outer peripheral end of the central wall portion located in the pouring opening has an inner side extending downward from the outer peripheral end Vertical ribs were formed, and the upper surface of the connecting portion formed a gentle curved surface extending from the upper side wall portion toward the lower central wall portion .
The upper SL plug Symbol sidewall portion during a dispense can be at least the in correspondence to the connecting portion to the forming position, forming the outer longitudinal ribs extending downwardly from said side wall portion.

The dispensing inner plug of the present invention includes a side wall portion having a substantially cylindrical shape, a central wall portion having a gentle surface with an upper surface protruding upward, a lower end of the side wall portion, and an outer peripheral end of the central wall portion. In the inside plug for pouring in which a plurality of connecting portions to be connected and an opening for pouring provided between the connecting portions are formed, an outer peripheral end of the central wall portion located in the pouring opening is The inner vertical rib extending downward from the outer peripheral end is formed, and the upper surface of the connecting portion forms a gentle curved surface extending from the upper side wall portion toward the lower central wall portion . When the container is tilted after the container is tilted to pour out the content liquid into the target object, the content liquid is returned to the inside of the container from the dispensing opening. At this time, the upper surface of the central wall portion is directed upward. Since it has a gently protruding surface, the content liquid accumulated on the upper surface of the central wall flows to the side of the dispensing opening and is guided to the inner vertical rib without collecting in the dispensing plug. Can be brought back in. In addition, since the upper surface of the connecting portion of the dispensing inner plug forms a gently curved surface extending from the upper side wall portion toward the lower central wall portion, the content liquid can be further efficiently contained in the container. Can be returned to.
In addition, an outer vertical rib extending downward from the side wall portion is formed in the side wall portion of the dispensing inner plug in correspondence with the position where the connecting portion is formed. Since the shape of the connecting portion of the dispensing inner plug is curved, it becomes easier to roll when the dispensing inner plug is conveyed on the production line in the factory. Therefore, by forming the outer vertical ribs, it is possible to maintain an upright posture and to perform high-speed conveyance on the production line. Further, when returning the content liquid into the container, the content liquid can flow down into the container so as to travel along the side surface of the outer vertical rib.

Hereinafter, an extraction stopper according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a half cross-sectional half side view in which a dispensing stopper 3 according to the present invention is applied to a container 2 together with a container lid 1.
The container lid 1 is made of, for example, a synthetic resin such as polyethylene or polypropylene, and has a disk-shaped top surface wall 5 and a substantially cylindrical skirt wall 6 that hangs down from the periphery of the top surface wall 5. The top wall 5 of the container lid 1 extends substantially horizontally as a whole, and a large number of grooves 16a extending in the vertical direction are formed on the outer surface of the peripheral wall portion 16 of the skirt wall 6 in the entire circumferential direction.
A weakening line 7 extending in the circumferential direction is formed at a lower portion of the peripheral wall portion 16 of the skirt wall 6, and a tamper evidence skirt portion 10 is provided below the weakening line 7. The skirt wall 6 includes the tamper evidence skirt 10, and the peripheral wall 16 does not include the tamper evidence skirt 10.

On the inner peripheral surface of the peripheral wall portion 16 of the container lid 1, a female screw 21 that is screwed with the male screw 22 of the container 2 is formed. On the other hand, the synthetic resin-made or glass-made container 2 has the mouth-and-neck portion 17 formed above, and the male screw 22 described above is formed on the outer peripheral portion of the mouth-and-neck portion 17.
The circumferential direction weakening line 7 is composed of slits 12 formed at intervals in the circumferential direction and a plurality of bridging portions 14 existing between the slits 12. In addition, a plurality of locking protrusions 11 are formed on the inner peripheral surface of the tamper evidence skirt 10 so as to protrude obliquely upward inward in the radial direction of the container lid 1.

On the outer peripheral surface of the container 2, a locking jaw portion 23 that protrudes in an annular shape toward the outer peripheral side of the container 2 is formed at a slight distance to the lower side of the male screw 22. The portion 23 is arranged to be engageable. The bridging portion 14 connects the peripheral wall portion 16 and the skirt portion 10 so as to be able to be broken in the vertical direction, thereby facilitating breakage when the container lid 1 is opened. The locking projection 11 plays a role of preventing the tamper evidence skirt 10 from coming off the locking jaw 23 after opening.
An annular neck ring 24 protruding outward in the radial direction of the container 2 is formed at the lower part of the locking jaw 23 of the container 2.

2 is a perspective view of the dispensing plug 3, FIG. 3 is a half-sectional half-side view (in the direction of line XX in FIG. 5) with the center line as a boundary, and FIG. 4 is rotated 30 degrees from the position of FIG. Sectional drawing (YY line direction of FIG. 5) of the made part, FIG. 5 is a bottom view.
As shown in these drawings, an inner stopper 3 for pouring is attached to the mouth and neck portion 17 of the container 2. The dispensing inner plug 3 includes a substantially pan-shaped side wall portion 31 that is substantially cylindrical, a circular bottom portion 32, and a flange portion 33 that is positioned above the side wall portion 31.
The flange portion 33 is formed so as to project annularly from the upper portion of the side wall portion 31 to the radially outer side of the dispensing plug 3. The lower surface 33a of the flange portion 33 extends in the horizontal direction, and the area where the annular lower surface 33a is present is equal to the area where the upper end of the mouth-neck portion 17 of the container 2 is present. In this state, the lower surface 33a is placed in a state of being placed on the upper end portion of the mouth / neck portion 17. The upper surface side of the flange portion 33 is substantially circular in cross section. On the other hand, the container lid 1 is formed with an annular seal 5 a that protrudes downward in an annular shape on the inner surface of the top wall 5. In the annular seal 5a, the outer peripheral surface of the tip abuts on the inner peripheral surface of the flange portion 33 and serves as a seal portion. Formed on the outer side of the annular seal is an annular convex portion 5b that protrudes downward with a space from the annular seal 5a. The annular convex portion 5b abuts on the upper surface of the flange portion 33, serves as a seal portion, and prevents excessive tightening when the container lid 1 is screwed to the container.

  A central wall 34 having a dome-shaped upper surface is formed at the bottom 32 of the dispensing inner plug 3. The central wall portion 34 having a circular shape when seen in a plan view is formed in a conical shape having a central portion at a high position and having a gentle surface from the central portion toward the outside in the radial direction. Between the outer peripheral part of the central wall part 34 and the lower part of the side wall part 31, a plurality of connecting parts 35 that couple the central wall part 34 and the side wall part 31 are formed. In the present embodiment, the connecting portions 35 are formed at six locations and are arranged at intervals of 60 degrees toward the circumferential direction of the bottom portion 32. All of the plurality of connecting portions 35 have the same shape. The connecting portion between the connecting portion 35 and the side wall portion 31 and the connecting portion between the connecting portion 35 and the central wall portion 34 are formed by a continuous surface of each connecting portion, and are formed so as not to cause a step or the like. That is, the upper surface of the connecting portion 35 is formed from a gentle surface having a large curvature radius formed by a circular arc or a combination of circular arcs centered on the inner surface side of the pouring inner plug 3 from the outer end to the inner end. Yes.

  In the present embodiment, the lowest position P of the bottom 32 is formed in the connecting portion 35. That is, the shape of the connecting portion 35 is joined to the inner surface of the lower end of the side wall portion 31 that hangs down substantially without any step, and is curved downwardly from the lower end of the side wall portion 31 toward the central wall portion 34 without any step. It becomes the lowest at the lowermost position P, and then gradually becomes higher toward the central wall 34 side, and is joined to the central wall 34 without a step. That is, since the lowest end position P of the inner peripheral surface of the inner plug 3 for pouring is composed of a gentle surface with a large radius of curvature, the liquid does not easily accumulate in this portion and is returned to the container through the pouring opening 36. It will be.

As shown in FIG. 5, the dispensing opening 36 has a rectangular shape extending radially from the central axis of the bottom portion 32 in a plan view and spaced apart from the central axis. It is formed so as to narrow toward the center side. However, the shape of the dispensing opening 36 may be a shape that becomes wider toward the center side, and there is no particular limitation. However, the content liquid appropriately flows from the inside of the container 2 to the dispensing plug 3. However, it is necessary to form the size so that it can flow in.
In the present embodiment, the boundary region of the bottom portion 32 of the dispensing plug 3 is not clearly shown, but the bottom portion 32 includes the entire central wall portion 34, and the connection portion 35 and the dispensing opening 36 are described. , May include all or some of them.

The outer peripheral surface of the side wall 31 of the dispensing opening 36 is formed to have substantially the same diameter as the inner peripheral surface of the mouth-and-neck portion 17 of the container 2, and in the state where the inner plug 3 for dispensing is attached to the container 2, Both the part 31 and the mouth-and-neck part 17 are mounted in close contact.
Outer vertical ribs 37 are formed on the lower side of the inner peripheral side of the side wall portion 31 and on the outer peripheral portion of the bottom portion 32. As shown in FIG. 1, the outer vertical rib 37 forms a gap with respect to the inner peripheral surface of the mouth-and-neck portion 17 of the container 2 and is formed in the circumferential direction along the inner peripheral surface, and the tip portion thereof is directed downward. Extend. The tip of the outer vertical rib 37 is formed so as to extend to a position equivalent to the lowermost end of the bottom 32 or a position slightly projecting downward from it. It is preferable in terms of stable supply. The positions where the outer vertical ribs 37 are formed are formed in the circumferential direction at the positions where the respective connecting portions 35 are located excluding the dispensing opening 36. Both side surfaces 37 a on the circumferential direction side of each outer vertical rib 37 are formed flush with the side surface of the dispensing opening 36.
As shown in FIG. 5, an annular inner longitudinal rib 38 is formed in the joint portion between the central wall portion 34 and the connecting portion 35 on the bottom portion 32, as shown in FIG. 5 (FIGS. 3 and 4 are also shown). reference). The portion of the inner vertical rib 38 that faces the dispensing opening 36 has a narrower rib width than the portion where the connecting portion 35 exists. Therefore, three sides of the pouring opening 36 on the side of the central wall 34 are surrounded by the inner vertical ribs 38. As shown in FIGS. 3 and 4, the distal end side of the inner vertical rib 38 is directed downward in the vertical direction, and the distal end portion thereof coincides with the distal end portion of the outer vertical rib 37.

  When the container lid 1 is wrapped around the container 2, the dispensing stopper 3 is attached to the container 2 in advance. The inner plug 3 for pouring is brought into close contact with the mouth and neck portion 17 by the elastic force of the side wall portion 31 of the inner plug 3 for pouring made of synthetic resin, and the lower surface 33a of the flange portion 33 is formed at the upper end of the mouth and neck portion 17. It abuts and prevents further penetration of the dispensing stopper 3 into the container 2 and serves as a stopper. The container lid 1 is wrapped around the mouth / neck portion 17 after the dispensing stopper 3 is attached. At this time, the locking projection 11 shown in FIG. 1 is deformed outward, gets over the screw 22 and the locking jaw 23, and is restored again inward and upward, so that the tip of the locking projection 11 is engaged. It is located below the stop jaw portion 23, can be engaged with the locking jaw portion 23, and plays a role of preventing the tamper evidence skirt 10 from coming off.

Next, the operation of this embodiment will be described.
When such a container lid 1 is opened by a user, the container 2 is grasped with one hand, and the container main body (portion above the tamper evidence skirt 10) 8 of the container lid 1 is grasped with the fingertip of the other hand. Then, the container lid 1 is opened. When the peripheral wall portion 16 of the skirt wall 6 is rotated, the entire container lid 1 tends to move upward by the action of the screws 21 and 22, but the locking projection 11 of the tamper evidence skirt portion 10 is shown in FIG. It abuts on the locking jaw portion 23 shown, and the rise of the tamper evidence skirt portion 10 is prevented. Thus, in the container lid 1, only the portion of the container lid main body 8 moves upward, the bridging portion 14 of the weakening line 7 is cut, and the container main body 8 and the tamper evidence skirt 10 are cut. Then, the tamper evidence skirt 10 is left on the container 2 side, and the container lid 1 can be detached from the mouth / neck part 17.

  When the content liquid is poured out from the container 2, the container 2 is tilted with the container lid 1 removed. As the container 2 tilts, the content liquid in the container flows out through the pouring opening 36 of the pouring inner plug 3. At this time, the dispensing opening 36 is formed in a size according to various conditions such as the viscosity of the content liquid, and thereby flows out from the dispensing opening 36 in an appropriate amount. The content liquid that has flowed into the inside of the pouring inner plug 3 from the pouring opening 36 flows through the inner peripheral surface of the side wall portion 31 of the pouring inner plug 3, and the flange portion 33 serves as an outlet and is poured into the object. It is.

After the supply of the content liquid to the target object is completed, the container 2 is placed in an arbitrary place with the container 2 standing up. At this time, the bottom portion 32 of the pouring inner plug 3 is in the lower position, and the pouring inner plug 3 removes the residual content liquid that has not been discharged to the outside with the content liquid that has flowed into the inside. 3 can be returned to the inside of the container 2.
Specifically, a part of the residual liquid remaining in the inside of the inside plug 3 for pouring while the container 2 is tilted is partly opened from the side wall 31 by bringing the container 2 upright. The remaining content liquid is returned directly to 36 and returned from the side wall portion 31 to the connecting portion 35. The residual content liquid returned to the connecting portion 35 flows down the connecting portion 35 by the gravitational action because the connecting portion 35 is gradually lowered toward the central wall 34 side. Then, it spills into the container 2 through the dispensing opening 36 located laterally from the connecting portion 35, or a part of the content liquid is returned from the connecting portion 35 to the central wall portion 34. The residue returned to the central wall portion 34 acts to expand the residual content liquid in the circumferential direction by the conical surface, so that the residual content liquid can easily flow toward the dispensing opening 36.
Then, the residual content liquid is returned from the dispensing opening 36 into the container 2 toward the inner peripheral side end of the dispensing opening 36. Since the inner vertical rib 38 is formed at the inner peripheral side end portion of the dispensing opening 36, the residual content liquid flows down into the container so as to be transmitted to the inner vertical rib 38.

The residual content liquid remaining on the central wall portion 34 from the beginning is located at a high position in the central portion of the conical central wall portion 34 and gradually decreases outward in the radial direction. It flows to a low place. As a result, the residual content liquid is returned from the outer peripheral end of the central wall portion 34 to the inside of the container 2 through the pouring opening 36 or flows to the lowest position P side of the connecting portion 35 at the lowest position. It is possible to return to the inside of the container 2 from the dispensing opening 36 through the side portion of the connecting portion 35.
The outer vertical rib 37 formed at the lower part of the container lid 1 allows the residual content liquid flowing down from the side surface from the side wall portion 31 side of the dispensing opening 36 to efficiently travel along the side surface 37a of the outer vertical rib 37. Can flow down.

Moreover, since there is no corner at the connecting portion between the side wall portion 31 extending in the vertical direction and the bottom portion in the horizontal direction as in the prior art, the residual content liquid enters the portion and solidifies, and this solidified product is deposited. It can be prevented.
An outer vertical rib 37 extending downward was formed at the lower portion of the side wall portion 31 of the dispensing inner plug 3, and an inner vertical rib 38 was formed at the joint between the central wall portion 34 and the connecting portion 35. This is because the shape of the connecting portion 35 of the pouring inner plug 3 is curved, and if the pouring inner plug 3 is transported on the production line in the factory, it is easy to roll unless it is supported by the support member. Therefore, by forming the vertical rib, it is possible to maintain an upright posture even without a support member, and it is possible to perform high-speed conveyance on the production line.

The present invention has been described based on the embodiments with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiments, and can be modified or changed without departing from the scope of the present invention. is there.
For example, in the above-described embodiment, the lowermost position of the bottom portion is provided in the connecting portion. However, as shown in FIG. 6, the lowermost position P of the bottom portion is formed at the connecting portion between the connecting portion 35 and the central wall portion 34. May be. Since one end of the dispensing opening 36 is adjacent to the coupling portion, the content liquid is efficiently returned from one end of the dispensing opening 36.

Also. In the above-described embodiment, the shape of the central wall portion 34 of the dispensing plug 3 is formed in a conical shape. You may form so that it may face gradually downward.
In addition, as for the central wall portion 34 of the dispensing plug 3, if it gradually decreases from the inside to the outside, a through hole is formed in the center portion (that is, the center wall portion has a hole formed in the center portion. It may be such that a truncated cone shape is formed.

It is the fragmentary sectional view seen from the front direction of the container with a lid | cover with which the inside stopper for extraction by embodiment of this invention is mounted | worn. It is a perspective view of the inside stopper for extraction by embodiment of this invention shown in FIG. It is the fragmentary sectional view which fractured | ruptured the left side part of the inside stopper for extraction by embodiment of this invention shown in FIG. It is sectional drawing of the state which rotated the inside stopper for extraction of FIG. 3 30 degrees to the circumferential direction. It is a bottom view of the inside stopper for extraction shown in FIG. It is sectional drawing of the inside stopper for extraction by the modification of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container lid 2 Container 3 Outlet plug 31 Side wall part 32 Bottom part 33 Flange opening part 34 Central wall part 35 Connection part 36 Outlet for extraction 37 Outer vertical rib 37a Side surface 38 Inner vertical rib

Claims (2)

A side wall portion having a substantially cylindrical shape, a central wall portion having a smooth surface whose upper surface protrudes upward, a plurality of connection portions for connecting the lower end of the side wall portion and the outer peripheral end of the central wall portion, and each connection In the inside plug for pouring formed with the pouring opening provided between the parts,
An inner vertical rib extending downward from the outer peripheral end is formed on the outer peripheral end of the central wall portion located in the extraction opening ,
The inside plug for pouring is characterized in that the upper surface of the connecting portion forms a gentle curved surface extending from the upper side wall portion toward the lower central wall portion . The side wall portion, at least said to correspond to the connecting portion to the forming position, in a pouring according to claim 1, characterized in that so as to form an outer longitudinal ribs extending downwardly from said side wall portion plug.

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