JP2933308B2 - Pill fur proof cap made of synthetic resin - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pill fur proof cap made of synthetic resin.

[0002]

2. Description of the Related Art In general, a pill fur proof cap made of a synthetic resin is a screw cap having a downward opening which is screwed into a screw-type bottle mouth, and a tapper evidence band (hereinafter referred to as a "TE band") disposed at a lower end thereof. , The screw lid and the TE band are connected by a bridge portion that can be shredded, and further, the TE band is formed with a tongue-like engaging portion that engages with the lower end of the flange formed in the bottle mouth. Configuration.

In this case, a screw cover and a TE band are manufactured separately from a one-part type in which the screw cover and the TE band are integrally formed, and the TE band and the screw cover are elastically opposed to each other. There is a two-part type that is fitted by utilizing the deformation of the above. Specific examples of the latter are, for example, Japanese Utility Model Publication No. 51-18195, Japanese Utility Model Publication No. 3-75424, Japanese Utility Model Publication No. 4-9330, and Japanese Utility Model Publication No. 4-30113. Each of these prior arts separates a TE band into an upper part and a lower part connected via a shredable bridge part,
The upper part of the band is engaged with the lower end of the screw cap, and the lower part of the TE band is formed with an engaging part that engages with the lower end of the flange at the bottle mouth.

[0004] More specifically, of these prior arts, Japanese Patent Publication No. 51-18195 discloses a radially outward flange formed at the lower end of a screw cap. I have On the other hand, actual fairness 3-75424, actual fairness 4-93
Japanese Patent Publication No. 30 and Japanese Utility Model Publication No. 4-30113 are configured such that the upper part of the TE band is fitted to the inner peripheral surface of the lower part of the screw cap.

[0005]

In the case of the one-part type in which the screw lid and the TE band are integrally formed, the mold is easily removed at the time of molding, and the locking portion to the flange of the bottle mouth has a strong structure. However, if the screw lid and the TE band are configured as two separate parts as described in the above publications, the locking portion for the flange of the bottle mouth has a strong structure. Therefore, there is an advantage that it is possible to prevent the bridge portion from being opened without breaking, and to improve the sealing function (the function of confirming the presence or absence of unauthorized opening).

Meanwhile, in the case of a cap whose beauty is important such as a cap of a cosmetic container, a gold- or silver-colored rimming line is formed at the lower edge of the cap in a ring shape. If the proof cap can be designed in such a two-tone color, the aesthetic feeling can be remarkably improved due to the sense of quality and the accent effect.

[0007] As means for designing a two-tone color in this way, as described in the above publications, the pill fur proof cap is separated into a screw cap and a TE band, and the screw cap and the TE band are used. It is conceivable to change the color of the image or to impart a color to the TE band by thermal transfer or the like. However, when the TE band is fitted to the flange formed at the lower end of the screw cap as disclosed in Japanese Utility Model Publication No. 51-18195, the processing is easy because the mold can be easily cut out in manufacturing by injection molding. Screw cap and TE
Since the outer diameter of the band is too different, the beauty cannot always be improved. That is, there is little freedom in design.

On the other hand, Japanese Utility Model No. 3-75424 and Japanese Utility Model 4-9330
No. 4-30113, the upper part of the TE band is fitted to the inner surface of the screw cap, for example,
As shown in FIG. 11 of the publication, the screw cap can be formed in a straight shape, and the lower part (exposed portion) of the TE band can be formed to have the same diameter as the outer peripheral surface of the screw cap, thereby improving the beauty. However, there is a problem in that it is troublesome to form a protrusion (undercut) on the inner peripheral surface of the screw cap with which the TE band is engaged.

SUMMARY OF THE INVENTION An object of the present invention is to provide a two-part pill fur proof cap capable of improving aesthetics without impairing the ease of molding.

[0010]

According to the present invention, there is provided a synthetic resin screw cap having a cylindrical shape with a bottom opening having a downward opening screwed into a bottle mouth having an external thread formed on an outer peripheral surface, and a screw cap attached to a lower end of the screw cap. A pill fur proof comprising a ring body made of a synthetic resin, wherein the screw cap and the ring body are manufactured separately, and a locking portion is formed on the ring body with respect to a lower surface of a flange formed in the bottle mouth. In the cap, at the lower end of the screw cap, a ring-shaped hanging portion overlapping the inner peripheral surface of the ring body is provided integrally via a bridge portion that can be shredded, and the outer surface of the hanging portion and the inner surface of the ring body are provided. Is provided with engaging means for engaging the hanging part and the ring body with each other in a manner that they cannot be disengaged from each other by being fitted against the elasticity. "

[0011]

With this configuration, since the engaging means provided on the hanging portion of the screw cap is formed on the outer peripheral surface, a state in which the hanging portion is inserted radially inside the outer circumferential surface of the screw cap is provided. Even in this case, the screw cap with the hanging portion provided with the engagement means such as the annular projection can be easily formed by the injection molding method. Since there is no need to increase the outer diameter of the hanging part, the outer diameter of the ring body (TE band) does not need to be excessively larger than the outer diameter of the screw cap. And the outer diameter can be balanced so that the whole is in a neat form.

In addition to this, the screw cap and the ring body are made of different color materials, or the outer surface of the ring body is given a color such as a metal color by transfer or the like, so that the pill fur proof cap is two-tone. Since it is easy to color-code the colors, a sense of quality and an accent effect can be caused, and the beauty can be remarkably improved. Therefore, according to the present invention, there is an effect that the beauty of the pill fur proof cap can be remarkably improved without impairing the ease of manufacture.

According to the second aspect of the present invention, the ring is held by the spring piece in a state where the ring does not rattle, so that the ring is stable as if the ring was fixed to the bottle. In this state, the beauty can be further improved. Moreover, since the hanging portion of the screw cap is sandwiched between the inner and outer sides by the main body portion of the ring body and the spring piece, there is an advantage that the mounting strength of the screw body to the screw cap can be further improved.

[0014]

Next, embodiments of the present invention will be described with reference to the drawings. 1 to 6 show a first embodiment, in which FIG. 1 is a partially cutaway front view in a state where a pill fur proof cap 1 is fitted to a bottle mouth 2, and FIG. 2 is a longitudinal sectional view in a separated state. FIG. 3 is a plan sectional view taken along the line III-III of FIG.
5 is a plan view taken along the line IV-IV in FIG. 2, and FIG.
FIG. 4B is a sectional view of a state of use at a location A, and FIG.
It is sectional drawing of the use condition in a location.

As shown in FIG. 1, a screw thread 3 is formed on the outer peripheral surface of the bottle mouth 2, and a flange 4 is formed below the screw thread 3. The upper end of the bottle mouth 2 is formed to have a small diameter, and a synthetic resin nozzle 5 is fitted to the small diameter portion 2a. Pill fur proof cap 1
Is a bottomed cylindrical screw cap 6 with a downward opening screwed into the bottle mouth 2.
And a ring body 7 attached to the lower end of the screw cap 6. Both are manufactured separately by injection molding using a synthetic resin such as polypropylene. Screw lid 6
A packing 8 is fitted into the upper part of the box.

As shown in FIG. 2, a ring-shaped hanging portion 10 is integrally formed on the lower end surface of the cylindrical portion 2a of the screw lid 6 via a plurality of (six in the illustrated example) bridge portions 9. It is connected. The hanging portion 10 is located radially inward of the outer peripheral surface of the screw lid 6, and has an annular projection 11 formed on the outer peripheral surface of the hanging portion 10 as an example of an engaging portion. The bridge portion 9 is formed in a trapezoidal shape so that the cross-sectional area of the upper end is reduced.

When the bridge portion 9 is formed to have a trapezoidal cross section as in the embodiment, stress is concentrated on the upper end of the bridge portion 9 when opening it, and the bridge portion 9 breaks, so that the trace of the bridge portion 9 is placed on the lower end of the screw cap after opening. Can be prevented or suppressed from remaining to improve the beauty. The upper end of the ring body 7 has substantially the same outer diameter as the lower end of the screw cap 6 and is formed as a whole with a downwardly bulging outer surface (a straight shape may be used). An annular groove 12 as an example of an engaging portion fitted to the ten annular projections 11 is formed so as to extend over the entire circumference. By using the elastic deformation of the ring body 7 and the hanging part 10 to fit the annular groove 12 and the annular projection 11,
The ring body 7 is fixed to the screw lid 6 so as not to be detached.

The upper end of the ring body 7 is set so as to be in close contact with the lower end of the screw cap 6 with the annular groove 12 and the annular projection 11 fitted. Further, as shown in FIG. 2, a projection 13 projecting upward with a projection size slightly smaller than the projection size of the bridge portion 9 is provided on a portion between the adjacent bridge portions 9 on the upper end surface of the ring body 7. Is provided. This protrusion
Reference numeral 13 is for preventing the bridge portion 9 from buckling when the ring body 7 and the hanging portion 10 are fitted.

At the lower end of the inner peripheral surface of the ring 7, a locking claw 14 as an example of a locking portion which is caught on the lower surface of the flange 4 of the bottle mouth 2 and holds the ring 7 immovably, and a flange 4. And spring pieces 15 elastically contacting the outer peripheral surface of the spring are alternately formed along the circumferential direction. By screwing the screw lid 6 into the bottle mouth 2 while deforming the locking claws 14 and the spring pieces 15, the locking claws 14 are connected to the flange 4 of the bottle mouth 2 as shown in FIG.
, And the spring piece 15 hits the outer surface of the flange 4 in an elastically deformed state.

In this case, the locking claw 14 may be set so as to elastically contact the base of the flange 4 in the bottle mouth 2, but in this case, the locking claw for screwing the screw lid 6 into the bottle mouth 2 may be provided. 14 resistance becomes too large or screw cap 6
There is a possibility that the locking claw 14 will not get over the flange 4 even if the screw is screwed. On the other hand, if the spring piece 15 is formed separately from the locking claw 14, the ring piece 7 is stabilized by applying the spring piece 15 to the flange 4 while securely locking the locking claw 14 to the lower surface of the flange 4. There is an advantage that the posture can be maintained.

The radially inward dimension of the spring piece 15 is set to be slightly smaller than the inwardly projecting dimension of the locking claw 14.
Further, the width dimension and the interval between the locking claw 14 and the spring piece 15 can be set to any values as long as the function is not impaired. As shown in FIG. 5 (B), with the screw lid 6 screwed into the bottle mouth 2, the hanging portion 10 of the screw lid 6 is set so as to be sandwiched between the main body of the ring body 7 and the spring piece 15. ing. Therefore, the fitting state between the annular projection 11 and the annular groove 12 is ensured, and the mounting strength of the ring body 7 to the screw lid 6 can be remarkably improved.

A mold apparatus for manufacturing the screw cap 6 by injection molding is, for example, a first mold 16 having a cavity to be fitted on the screw cap 6 as partially shown by a dashed line in FIG.
And a second mold forming outer surfaces of the bridge portion 9 and the hanging portion 10
17 and a third part forming the inner surfaces of the bridge part 9 and the hanging part 10.
It has a mold 18 and a motor rack 19 for forming a screw portion on the inner surface of the screw lid 6. The screw cover 6 can be pulled out while rotating the motor rack 19 from the screw cover 6.
On the inner surface of the lower end of the cylindrical portion 6a, there is formed a cutout groove 20 with which the third die 18 meshes.

The first mold 16, the third mold 18 and the fourth mold 19 move in the axial direction of the screw cap 6, and the second mold 17 is a split mold that moves in the radial direction. The ring body 7 is formed by a pair of dies that move in the axial direction, and the dies are removed from the engagement grooves 12 by so-called forcible removal using elastic deformation. In the above configuration, since the annular projection 11 can be easily formed on the outer surface of the hanging portion 10, the hanging portion 10 can be easily positioned radially inward of the outer peripheral surface of the screw cap 6, and as a result, By preventing the outer diameter of the ring body 7 from becoming excessively large, the two-part type can be designed in a neat and visually excellent form. Also,
Since the bridge portion 9 is formed on the screw cover 6, it is easy to provide the bridge portion 9 at the height position of the upper end of the ring body 7, and therefore, after opening, the screw cover 6 is formed into a normal bottomed cylindrical shape. It has the same form as that of the screw cap 6 and has a good appearance after opening.

In addition to the above points, as schematically shown in FIG. 6, for example, the screw cap 6 is made of a white synthetic resin and the ring body 7 is made of a red synthetic resin. By changing the colors of the screw cap 6 and the ring body 7, it is possible to give the pill fur proof cap 1 a luxury feeling or an accent effect, so that the aesthetic feeling can be remarkably improved before and after opening.

Instead of, or in addition to, the screw lid 6 and the ring body 7 made of synthetic resin of different colors, as shown by a two-dot chain line in FIG. Using transfer tape 21 on which metal is deposited, transfer tape 21
While applying the color application surface to the outer peripheral surface of the ring body 7 and rotating the ring body 7 and feeding out the transfer tape 21,
The outer peripheral surface of the ring 7 may be colored by pressing the transfer tape 21 against the outer peripheral surface of the ring 7 with a heated rubber roller (not shown). Thus, the transfer tape 21
When used, various metallic colors such as silver, gold and chrome can be easily imparted, and it is more effective to give a sense of quality.

In the embodiment, the screw cap 6 is formed with the bridge portion 9 provided. However, after the screw cap 6 is formed without the bridge portion 9, the lower portion of the cylindrical portion 6a is cut with a cutter. The part 9 and the hanging part 10 may be formed. Further, as an engagement means between the hanging part 10 and the ring body 7, an annular groove may be formed in the hanging part 10 and an annular protrusion may be formed on the ring body 7. Further, the protrusions and grooves may be formed intermittently without being formed in a ring shape. Further, the hanging portion 10 is not limited to being formed in a ring shape, and may be formed to extend intermittently in a circumferential direction.

FIG. 7 shows a second embodiment which is a modification of the outer shape of the ring body 7. The ring body 7 may be formed with a plurality of annular streaks on the outer surface thereof, or a plurality of lines may be formed on the outer peripheral surface of the ring body 7 by appropriate means such as thermal transfer. FIGS. 8 to 10 show a third embodiment, of which FIG. 8 is a front sectional view of a separated state, FIG.
FIG. 8 is a plan view taken along the line IX-IX of FIG. 8 (a plan view of the ring body), FIG. 10 is a sectional view A of FIG.
FIG. 9 is a sectional view of the use state at a position BB in FIG.

In this embodiment, an outward annular claw 22 is formed on the outer peripheral surface of the hanging portion 10 of the screw lid 6 so as to extend over the entire circumference. On the other hand, on the inner peripheral surface of the ring body 7, a plurality (four in the figure) of inward engaging claws 23 engaging with the outwardly extending annular claws 22 of the hanging part 10 are intermittently arranged in the circumferential direction. It is formed so that it may extend. in this case,
A portion of the inner peripheral surface of the ring body 7 between the adjacent inward engaging claws 23 is formed in a recess 24 with which the outward annular claw 22 does not engage. Flange 4 of bottle mouth 2
Is formed. Further, the portion of the inward engaging claw 23 in the bottom of the ring body 7 is opened downward (the opening is indicated by reference numeral 25), and the connecting portion sandwiching the opening 25 is formed.
The spring piece 15 is provided via 26.

In this embodiment, the inward engaging claw 23 is provided only partially along the circumferential direction of the ring body 7. However, the presence of the opening 25 makes it easier to remove the mold during molding. Since the inwardly projecting dimension of the inward engaging claw 23 can be increased without damaging it, the two engaging claws 22 and 23 can be firmly hooked, and as a result, the ring body 7 can be firmly attached to the screw cap 6. Can be installed.

Further, since the locking claw 14 is connected to the main body of the ring body 7 over the entire width thereof, the function of the locking claw 14 being stretched against the flange 4 is not impaired.
Further, similarly to the first embodiment, the outward locking claw 14 is sandwiched between the main body of the ring body 7 and the spring piece 15, so that the engagement between the engagement claws 22 and 23 is easy. However, the attachment strength of the ring body 7 to the screw lid 6 can be further improved.

In each of the above embodiments, the ring 7
In this case, the hanging part 10 and the ring body 7 may be cut off. If there is a design requirement, the outer diameter of the ring body 7 may be set to be larger than that of the embodiment. It should be noted that providing a locking claw (locking portion) and a spring piece on the ring body and fixing it in a stable state can also be applied to a case where a bridge portion is formed on the ring body.

[Brief description of the drawings]

FIG. 1 is a partially broken front view showing a use state of a first embodiment.

FIG. 2 is a longitudinal sectional view showing a state where a screw cap and a ring body are separated.

FIG. 3 is a plan sectional view taken along line III-III of FIG. 2;

FIG. 4 is a plan view taken along line IV-IV of FIG. 2;

5A is a cross-sectional view of a state of use at a position AA in FIG. 4, and FIG. 5B is a cross-sectional view of a state of use at a position BB of FIG.

FIG. 6 is a front view clearly showing a difference in color between the screw cap and the ring body.

FIG. 7 is a partial sectional view of the second embodiment.

FIG. 8 is a longitudinal sectional view showing a state where a screw lid and a ring body according to a third embodiment are separated.

FIG. 9 is a plan view taken along the line IX-IX of FIG. 8;

10A is a sectional view of a use state at a position AA in FIG. 9, and FIG. 10B is a sectional view of a use state at a position BB in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pill fur proof cap 2 Bottle mouth 4 Flange 6 Screw lid 7 Ring body 9 Bridge part 10 Hanging part 11 Annular protrusion 12 as an example of an engagement means 12 Annular groove as an example of an engagement means 14 As an example of an engagement part Locking claw 15 Spring piece

Claims (2)

(57) [Claims] A synthetic resin screw cap having a cylindrical opening with a downward opening and screwed into a bottle mouth having an external thread formed on the outer peripheral surface thereof, and a synthetic resin ring attached to the lower end of the screw cap. A pill fur proof cap formed by separately manufacturing the screw cap and the ring body and forming a locking portion on the ring body with respect to the lower surface of the flange formed in the bottle mouth; At the lower end, a ring-shaped hanging portion that overlaps the inner peripheral surface of the ring body is integrally provided via a bridge portion that can be shredded, and the hanging portion and the ring are attached to the outer surface of the hanging portion and the inner surface of the ring body. A pill fur proof cap made of a synthetic resin, characterized in that an engagement means is provided which engages with the body against elasticity so as to be inseparably engaged with each other. 2. The method according to claim 1, wherein an annular projection extending over the entire circumference is formed as an engaging means on the outer peripheral surface of the hanging portion of the screw cap, and the inner peripheral surface of the ring body is provided with the annular projection. As an engagement means, an annular groove fitted to the annular projection is formed, and the annular projection and the annular groove are set so as to fit each other by deformation against the elasticity of the hanging portion and the ring body. Further, the ring body is provided integrally with a spring piece elastically contacting the outer peripheral surface of the flange at the bottle mouth, and in a state of being screwed into the bottle mouth, the spring piece is in close contact or close contact with the hanging portion of the screw cap. A pill fur proof cap made of synthetic resin, which is set.