JP4554788B2 - Inner plug made of synthetic resin for easy separation and collection - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cap that is fitted to the mouth of a container, and more particularly to a synthetic resin inner plug that has a gripping piece and that can be easily separated and collected.
[0002]
[Prior art]
In recent years, the recycling of resources has become active, and used containers with caps are also subject to recycling.
When recycling this container, the container and the cap are made of different materials, so both must be separated. However, the locking protrusion formed on the inner surface of the outer cylinder of the cap is pressed against the engaging recess formed on the outer peripheral surface of the container mouth, so that the cap cannot be easily removed.
[0003]
Therefore, in order to solve this problem, a weakening line for tearing is provided in the cylindrical portion of the cap, and a knob is provided to make it easier to pull the weakening line.
When this knob is pulled in a predetermined direction, the weakening line is broken, and the locking protrusions of the cylindrical portion are cut, so that the locking force is weakened and easily comes off.
However, since this pick piece protrudes from the outer peripheral surface of the cylindrical portion, there is an advantage that it is easy to pick, but the following problems occur.
[0004]
That is, when plugging into the mouth of the container, the cap is sent to the plugging machine via the chute of the cap supply device, but when the knob is protruding from the cylinder, the adjacent knobs are entangled with each other. It fits and clumps.
Then, the caps cannot be supplied one by one and the caps are clogged with the chute.
[0005]
In order to solve this problem, the following bottle stoppers have been proposed.
That is, two thin broken lines are arranged in parallel on the peripheral wall, a portion between the thin broken lines is defined as a fracture removal portion, and a spout is formed between the upper end of the fracture removal portion and the top of the peripheral wall (actually open flat) 7-8253).
[0006]
[Problems to be solved by the invention]
In the conventional bottle stopper, since the width of the fracture removing portion at the top of the peripheral wall is narrow, it is difficult to pick. For this reason, it is difficult to apply a sufficient force to the removal portion, and thus it is not possible to smoothly collect and collect the removed portion.
[0007]
The present invention has been made to solve the above-described problems, and an object of the present invention is to enable easy longitudinal tearing.
Another object is to form a gripping piece that is easy to pick and does not entangle the caps adjacent to each other on the aligner during the plugging.
[0008]
[Means for Solving the Problems]
The present invention is a synthetic resin inner stopper that is plugged into a container mouth, and is provided with an outer cylinder that is pressed against the outer peripheral surface of the container mouth , and a locking projection provided inside the outer cylinder. A deep groove opening in the top wall of the upper end surface of the outer cylinder, the deep groove formed in the thick part of the outer cylinder to the lower side of the locking projection, and the deep groove of the thick part A grip piece and a thin portion that are separated and face each other, the grip portion located on the outer peripheral surface side of the outer cylinder, the thin portion located on the inner peripheral surface side of the outer cylinder, and along both sides of the grip piece A break portion provided on the lower end surface of the gripping piece, and abuts with a bead formed below the container mouth when the gripping piece is rotated around the bottom of the deep groove. And a fulcrum portion of the insulator.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The present inventor has noticed that the longitudinal weakening line is provided in the cylindrical portion because it is difficult to tear, and the gripping piece is difficult to pick because the picking portion is short and narrow.
Therefore, a deep groove is formed in the thick part of the outer cylinder to separate the thick part of the outer cylinder into a thin part and a gripping piece. Then, in order to obtain the action of the lever, a fulcrum portion of the lever is formed on the lower end surface of the gripping piece. This fulcrum part abuts on a bead provided below the engagement recess on the outer periphery of the container mouth when the grip piece is tilted downward, and acts as a fulcrum of the insulator to apply force to the thin part. Therefore, tearing of the thin portion can be facilitated.
[0010]
【Example】
A first embodiment of the present invention will be described in detail with reference to FIGS.
A cap C made of synthetic resin is fitted to the mouth 2 of the container 1. The cap C includes an inner plug 3 and an outer lid 6 that is screwed into the screw portion 4S of the inner plug 3.
The inner plug 3 includes an outer cylinder 4 that is in pressure contact with the outer peripheral surface of the mouth portion 2, an inner cylinder 5 that is in pressure contact with the inner peripheral surface of the mouth portion 2, and a top portion M that connects the two tubes 4 and 5. And.
The threaded portion 4S is continuously provided with a pouring cylinder 7, and an inside of the pouring cylinder 7 is provided with a blocking wall 9 with a fissure 8 and the blocking wall 9 is provided with a pull ring 10. It has been.
[0011]
An annular locking projection 4a is provided on the inner peripheral surface 4A of the outer cylinder 4. The locking protrusion 4a is fitted into the engaging recess 2A of the mouth portion 2 by a stopper.
The outer cylinder 4 is provided with a deep groove 11, a gripping piece 12 and a thin portion 13 that are opposed to each other via the deep groove 11, and a fracture portion 14 that is formed along both sides of the gripping piece 12.
[0012]
The deep groove 11 is a groove having a substantially U-shaped longitudinal section that opens to the top wall 4C of the upper end surface of the outer cylinder 4, and the thick part 4B of the outer cylinder 4 is separated from the gripping piece 12 and the thin-walled part 13 that is easy to tear. To separate. Further, the width of the deep groove 11, that is, the width W of the gripping piece 12 is appropriately selected in consideration of the ease of picking, and is formed, for example, to the same extent as the thumb of the separated collection person. And the deep groove | channel 11 is drilled to the downward direction of the said cyclic | annular latching protrusion 4a, and the depth is D. As shown in FIG.
[0013]
The gripping piece 12 is included on the same peripheral surface as the outer peripheral surface 4 </ b> B of the outer cylinder 4.
In addition, the breaking portion 14 provided along both sides of the gripping piece 12 is a vertical groove formed over the entire length L of the outer cylinder 4, but is not necessarily a vertical groove, for example, a vertical weakening line, a vertical cut Etc.
Further, a lever fulcrum 15 is formed on the lower end surface 12A of the grip piece 12.
[0014]
Next, the operation of this embodiment will be described.
A cap C is supplied from a chute of a cap supply device to a not-shown plugging machine. At this time, as shown in FIGS. 1 and 2, the cap 3 of the cap C includes the gripping pieces 12 in the same peripheral surface as the outer peripheral surface 4 </ b> B of the outer cylinder 4. Are not entangled in the chute. for that reason. The cap C can be supplied smoothly.
Since the inner plug 3 supplied to the stopper is pressed against the mouth 2 of the container 1 with a strong force, the locking projection 4a of the outer cylinder 4 is fitted into the engagement recess 2A of the mouth 2. The At this time, the fulcrum part 15 is located slightly above the bead 2B formed below the mouth part 2 of the container.
[0015]
When separating and collecting after using the container, the upper end 12B of the gripping piece 12 is picked with a finger and tilted in the direction of the arrow A1 as shown in FIG. As a result, the fulcrum portion 15 abuts the bead 2B while the gripping piece 12 rotates about the bottom portion 11A of the deep groove 11 as a center point.
In this state, when the gripping piece 12 is further tilted in the same direction, that is, in the direction of the arrow A2, the fulcrum portion 15 becomes the fulcrum of the lever, and the bottom portion 11A is pushed up in the direction of the arrow A3.
At this time, the length of the force point and the fulcrum is equal to the total length L of the gripping piece 12, and the action point (the lower end portion of the thin wall portion 13) is near the fulcrum portion 15; A large force can be applied to the action point by force.
[0016]
Then, the gripping piece 12 is further pulled up in the direction of the arrow A4, and the thin portion 13 continuing to the bottom portion 11A is pulled from the lower end 4D of the outer cylinder 4 toward the upper end surface 4C. If it does so, since the said latching protrusion 4a will cut | disconnect and the thin part 13 will leave | separate from the outer cylinder 4, the inner plug 3 can be easily removed from the opening part 2. FIG.
[0017]
A second embodiment of the present invention will be described with reference to FIGS. 4 and 5. The difference between this embodiment and the first embodiment is as follows.
(1) The convex part 16 is formed in the fulcrum part 15. Although this convex part 16 is formed in a cross-sectional square shape, other shapes, for example, hemispherical shape, inverted triangular shape, etc. may be sufficient.
(2) The notches 17 are provided on both lower ends of the fracture portion 14.
[0018]
As shown in FIG. 4, by forming the convex portion 16 on the fulcrum portion 15, the fulcrum portion 15 can easily come into contact with the bead 2 </ b> B, and the gripping piece 12 can easily rotate.
Therefore, compared with the first embodiment, the thin portion 13 can be torn with a smaller force.
[0019]
In addition, when this convex part 16 is provided only in the lower end surface 12A part of the holding piece 12, a partial difference appears in the height of the inner plug 3. Then, the inner plug 3 is inclined and unstable in the chute. In order to prevent this, it is preferable that the convex portion 16 is provided all around the lower end 4D of the outer cylinder or intermittently.
[0020]
As shown in FIG. 5, by providing the notches 17 at both lower ends of the fracture portion 14, stress concentration occurs, and the tearing of the fracture portion 13 can be easily started.
[0021]
A third embodiment of the present invention will be described with reference to FIG. 6. The difference between this embodiment and the first embodiment is as follows.
(1) The deep groove 11 is composed of a vertical groove portion 11a and a bulging portion 11b, and the bulging portion 11b is provided at a position corresponding to the locking protrusion 4a.
[0022]
Since the thin portion 13 corresponding to the locking protrusion 4a is thin by the bulging portion 11b, tearing is facilitated.
In addition, you may provide the convex part 16 of the said 2nd Example in this Example.
Moreover, you may form the 1 or 2 longitudinal weakening line corresponding to the fracture | rupture part 14 in the thin part 13 of this invention. This longitudinal weakening line is a portion that is easy to split and is formed by perforations, kerfs, and the like.
[0023]
【The invention's effect】
Since this invention was comprised as mentioned above, there exists an effect shown below.
(1) Since the fracture portions are provided along both sides of the gripping piece, the length of the gripping piece can be increased to the height of the outer cylinder. Therefore, it is possible to make it easy to pick the gripping piece.
(2) By forming a deep groove in the thick part of the outer cylinder and separating the thick part into a thin part and a gripping piece, the thickness of the outer cylinder becomes thin and can be easily split.
(3) Since the fulcrum portion of the insulator is formed on the lower end surface of the gripping piece, the fulcrum portion comes into contact with the bead when the gripping piece is tilted down the cylindrical portion, and acts as a fulcrum of the insulator to exert a force on the thin portion. Add. Therefore, the tearing of the thin portion can be facilitated.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a container and a cap, showing a first embodiment of the present invention.
FIG. 2 is a perspective view of an inner plug according to the first embodiment of the present invention.
FIG. 3 is a diagram showing the operation of the first embodiment of the present invention.
FIG. 4 is a longitudinal sectional view showing a main part of a second embodiment of the present invention.
FIG. 5 is a bottom view showing a main part of a second embodiment of the present invention.
FIG. 6 is a longitudinal sectional view showing an essential part of a third embodiment of the present invention.
[Explanation of symbols]
4 Outer cylinder 4B Thick part 4a Locking ridge 11 Deep groove 11b Swelling part 12 Gripping piece 12A Lower end surface 13 Thin part 14 Breaking part 15 Supporting part 16 Convex part 17 Notch part

Claims (6)

An internal stopper made of synthetic resin that is plugged into the container mouth,
An outer cylinder pressed against the outer peripheral surface of the container mouth,
A locking ridge provided inside of the outer cylinder,
A deep groove that opens in the top wall of the upper end surface of the outer cylinder, and a deep groove that is formed in the thick part of the outer cylinder to the lower side of the locking projection ;
A gripping piece and a thin part separated by a deep groove of the thick part, facing each other , a gripping part located on the outer peripheral surface side of the outer cylinder, and a thin part located on the inner peripheral surface side of the outer cylinder ,
Breaks provided along both sides of the gripping piece;
A fulcrum portion of an insulator that is formed on the lower end surface of the gripping piece and abuts with a bead formed below the container mouth when the gripping piece is rotated about the bottom of the deep groove ;
An internal stopper made of synthetic resin that is easily separated and collected.   The inner plug for easy separation and collection according to claim 1, wherein the fulcrum part is a convex part.   3. The synthetic resin inner plug easily separated and collected according to claim 1, wherein the fracture portion is a longitudinal weakening line, a longitudinal cut, or a longitudinal groove.   4. The synthetic resin inner plug that is easily separated and collected according to claim 1, wherein a notch portion is provided on a lower end side of the fracture portion.   5. The inner plug for easy separation and collection according to claim 1, wherein the deep groove is formed to the lower side of the locking projection.   6. The inner plug for easy separation and collection according to claim 5, wherein the deep groove is provided with a bulging portion at a portion corresponding to the locking projection.

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