JPS6112339Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a bottle with a cover cup, and more particularly, to a bottle with a cover cup in which a plastic cover cup is fitted to a plastic bottle.

(Prior Art) Plastic bottles manufactured by blow molding or stretch-blow molding, especially polyethylene terephthalate bottles manufactured by biaxial stretch-blow molding, have recently been used as containers for liquid beverages such as beer. ing. In this case, a relatively large (for example, internal volume 1 to 10
(Little) bottle with a barrel-shaped appearance,
A container in which a plastic cover cup and a base cup are fitted onto a bottle in order to increase the design effect as a product is disclosed in Japanese Utility Model Application Publication No. 57-24231 (especially No. 1).
Figure).

In this case, the cover cup is fitted by inserting the vicinity of the outer peripheral surface of the neck ring located below the mouth and neck of the bottle into the circumferential recess formed on the inner peripheral surface of the inner peripheral edge of the inward flange-like wall provided on the cover cup. This is done by fitting the caps together, and it is said that this prevents the cover cup from easily coming off during transportation.

However, in the case of this type of cover cup, the tightening force at the fitting part is weak, so when the bottle is filled with liquid and cooled in water, water may enter between the cover cup and the bottle through the fitting part. The problem arises that it is easy to use.

Further, when the inner peripheral edge of the inwardly facing flange-like wall is formed by injection molding or the like, it is not on the same plane due to thermal distortion or the like, and tends to be slightly bent vertically along the circumferential direction. Therefore, when the circumferential recess on the inner peripheral edge has a dimensional relationship that allows it to fit with the vicinity of the outer peripheral surface of the neck ring without play, it is difficult to simultaneously and reliably fit along the entire circumference of the neck ring. A problem arises in that fitting requires time and effort.

On the other hand, if the height of the circumferential recess on the inner circumferential edge is slightly larger than the height of the outer circumferential surface of the neck ring, and a relatively loose fit is performed, it is not possible to simultaneously fit along the entire circumference of the neck ring. Although it is thought that it can be done relatively easily even with the above bending,
In this case, the fitted cover cup moves up and down and tends to wobble, causing a problem of instability.

Furthermore, in either case, the lower circumferential protrusion on the lower side of the circumferential recess and the upper circumferential protrusion on the upper side are close to each other, so when the cover cup is pushed down and fitted, the lower circumferential protrusion After the neck ring has expanded and passed through, the neck ring hits the upper circumferential protrusion so strongly that the neck ring slips out of the upper circumferential protrusion and dents the shoulder of the bottle, or the upper circumferential protrusion It is easy to cause problems such as parts breaking.

In addition, the cover cup is often engraved or printed for decoration, etc., but the cover cup is It is preferable that the cover cup is fitted so that it does not easily rotate around the bottle, but since the conventional cover cup described above has insufficient tightening force against the neck ring on its inner peripheral edge, it easily rotates around the bottle due to external force. The problem is that it is easy to rotate.

(Problems to be Solved by the Invention) The present invention is a plastic bottle with a cover cup fitted into it, which solves the problems in the prior art, and which allows the operation of fitting the cover cup into the neck ring to be performed reliably and easily. To provide a bottle with a cover cup in which sufficient tightening force is applied to the neck ring after fitting, the cover cup does not rattle, and rotation prevention is ensured.

(Means for Solving the Problems) The bottle with a cover cup of the present invention is a bottle with a cover cup in which a plastic cover cup having a hole through which the mouth and neck of the plastic bottle is inserted is fitted into a plastic bottle. ,
A neck ring having a groove formed on the upper surface is provided below the mouth and neck, and the cover cup rises from the inner end of the recessed central wall to define the hole and extends radially inward from the upper end. It extends to
a flexible cylindrical part having a flange formed on the lower surface with a rib that engages with the groove in a non-rotatable manner; It has a supporting part that stands up, and in the fitted state, the neck ring is fitted into the upper part of the cylindrical part, and the outer surface of the upper part is in contact with the supporting part.

(Example) In FIG. 1, 1 is a bottle with a cover cup, which includes a plastic bottle 2, a cover cup 3 made of plastic (for example, polypropylene), and a base cup 4 made of plastic.
It is equipped with The plastic bottle 2 (hereinafter referred to as "bottle") in this embodiment is for storing beer, and is manufactured by biaxially stretching and blow molding polyethylene terephthalate bottomed parylene in a split mold (not shown). . In order to ensure internal pressure resistance, the bottom portion 2a protrudes outward in a hemispherical shape, and the shoulder portion 2c is also formed in a crested hemispherical shape. The base cup 4 is provided to ensure the upright stability of the bottle 2, and is fixed to the bottom 2a at a ring-shaped inward protrusion 4a via an adhesive (not shown).

A neck ring 5 (having a larger outer diameter than the neck part 2b) is formed below the neck part 2b of the bottle 2 where the threaded part is formed. Netsukling 5 is
When capping or sealing the cap 6, a support (not shown) disposed at the bottom of the neck ring 5 absorbs the high axial load applied to the bottle 2.
This is normally provided in order to support the relatively thin shoulder portion 2c, body portion 2d, and bottom portion 2a of the bottle 2 from buckling or deformation.

A depressed center wall 3a is formed on the upper surface of the cover cup 3, and as shown in FIG. has been done. As shown in FIG. 4, the cover cup 3 has a cylindrical portion 8 vertically rising from the inner end of the central wall portion 3a, and a collar portion 9 extending radially inward at the upper end of the cylindrical portion 8. is formed, and the hole 7 is defined by the inner surface of the cylindrical part 8. Cylindrical main portion 8a of cylindrical portion 8
As will be described later, the thickness of the neck ring 5 (excluding the flange 9) is such that it has enough flexibility to allow the neck ring 5 to fit therein and to prevent the neck ring 5 from coming off easily after mating. stipulated in

A cylindrical support portion 10 that is relatively thick and hard to bend is further formed in the center wall portion 3a and surrounds the cylindrical portion 8 with a gap 11 in between. The width w (radial length) of the gap portion 11 is set to be slightly smaller than 1/2 of the difference between the outer diameter D of the neck ring 5 and the inner diameter d of the main portion 8a so as to enable tight fitting. ing. Neck ring 5 of bottle 2 is cover cup 3
The bottle 1 with a cover cup is fitted into the main part upper part 8b of the cylindrical part 8, so that the bottle 1 with a cover cup has a beer barrel-like appearance as a whole. Reference numeral 16 denotes a label affixed to the body 2d of the bottle, on which, for example, a trademark, trade name, etc. is printed.
A decorative engraving portion 3b is formed in the portion as required.

A plurality of (40 ribs in FIG. 3) ribs 13 are formed radially at equal intervals on the lower surface of the collar portion 9. On the other hand, on the upper surface of the neck ring 5, as shown in FIGS.
(16 pieces, 4 large groove parts 12b) Groove parts 12a, 12
b is formed.

Both sides 12a ₁ of the small groove 12a of the neck ring 5
are parallel to the opening direction of the split mold so as not to become an obstacle when opening the split mold, while the sides 12b ₁ and 12b ₂ of the large groove portion 12b are parallel to the opening direction of the split mold, respectively. and at right angles. The depth of the small groove part 12a and the large groove part 12b is the same as that of the collar part 9.
The height of the rib 13 is determined to be approximately equal to the height of the rib 13. 7th
As shown in the figure, in the fitted state, the small groove portion 12
a is provided at a position corresponding to the rib 13 in a 1:1 ratio, and the width of the small groove portion 12a is determined so that each small groove portion 12a and each rib 13 engage with each other to prevent the cover cup 3 from rotating. It will be done. Further, the width of the protrusion 12c between the adjacent large grooves 12b is
Preferably, the spacing between the ribs 13 is slightly smaller than the distance between the ribs 13 so that the distance c can fit into the recess between the ribs 13.

When attaching the cover cup 3 to the bottle 2,
The cover cup 3 is positioned in the circumferential direction so that the rib 13 engages with the small groove part 12a (if necessary, the label 16 and the engraved part 3b, the handle holder 3c of the cover cup and the handle holder of the base cup 4 (not shown) are (by positioning the cover cup 3 so that the axial alignment of
insert it and press down.

The neck ring 5 is connected to the lower curved portion 8c of the cylindrical portion 8.
When passing through, the central wall portion 3a elastically expands outward in the radial direction, and thereafter the main portion 8a expands and the rib 13 and the small groove portion 12a engage with each other, as shown in FIG. , and the outer surface of the upper part 8b of the cylindrical part is the support part 10.
The neck ring 5 and the upper part 8b are fitted together in a state in which they are in contact with each other. As described above, the width w of the gap 11 is determined to allow a tight fit, so a tight fit is achieved. Upper part 8 after mating
A gap 11' remains below the main part 8a, and the lower part 8d of the main part 8a projects in the radial direction of the outer circumference of the neck ring 5, so that the cover cup 3 does not easily come off from the bottle 2.

Further, as described above, since the cover cup 3 can be prevented from rotating, the engraving part 3b of the cover cup 3 or the printed part (not shown) can be aligned with the label 16 provided on the bottle 2 or the printed part (not shown). or the alignment (with respect to the axial direction) of the handle holder 3c of the cover cup 3 and the handle holder (not shown) of the base cup 4,
It can be retained even during transportation or use. The groove portion 12 and the rib 13 may be a single pair as long as the anti-rotation function is sufficiently achieved.
Note that 14 and 15 in FIGS. 1 and 4 are fins for ensuring liquid tightness inside the cover cup 3 after it is attached.

The present invention is not limited to the above embodiments; for example, the support portion may be formed discontinuously in the circumferential direction. Furthermore, if it is not necessary to prevent the cover cup from rotating, it is not necessary to form ribs and grooves. In this case, the position at which the cover cup is pressed down is limited by the engagement between the collar portion, which has a flat lower surface, and the peripheral edge of the neck ring, which has a flat upper surface.

Further, as shown in FIG. 9, an annular recess 14 is provided in the middle of the outer peripheral surface of the neck ring 5', and an annular protrusion 15 is provided at a corresponding position on the cylindrical portion 8'. The convex portion 15 may be engaged. In this case, it is possible to achieve attachment that makes it more difficult for the cover cup to come off. Further, although not shown, the same effect can be obtained by providing an annular convex portion in the middle of the outer peripheral surface of the neck ring and providing an annular recess at a corresponding position on the cylindrical portion.

(Effects of the invention) According to the invention, a cover cup has a flexible cylindrical part having a flange extending radially inward from its upper end, and a support part surrounding the cylindrical part through a gap. The neck ring of the bottle is fitted onto the top of the cylindrical part with the outer surface of the top in contact with the bearing part. Therefore, in the mated state,
The lower part of the cylindrical part protrudes inward below the outer periphery of the neck ring, and the lower surface of the collar is in contact with the upper surface of the neck ring, and the cylindrical part elastically tightens the outer periphery of the neck ring. Therefore, the cover cup does not easily come off from the bottle, and there is no risk of it moving up and down and rattling. Even when the bottle filled with liquid is immersed in water to cool it, there is no risk of water entering between the cylindrical part and the neck ring.

In addition, since the rib formed on the lower surface of the collar and the groove formed on the upper surface of the neck ring engage,
Coupled with the tightening force provided by the cylindrical portion, there is no fear that the cover cup will rotate around the bottle even if an external force is applied.

When the cover cup is further pushed down and the neck ring is inserted into the cylindrical part, a relatively high frictional force is elastically applied to the outer circumferential surface of the neck ring, and the outer circumferential surface slides along the lower part of the cylindrical part. After the neck ring passes through the lower curvature of the cylindrical part, the downward speed of the cover cup is relaxed, and there is no risk of the neck ring impacting the flange. It is difficult to cause dents or breakage of the flange.

In addition, since the above-mentioned sliding distance during fitting is relatively long, even if the cylindrical part is slightly bent vertically in the circumferential direction due to the conditions at the time of formation, this bending is corrected during sliding, so the neck ring can be easily It is possible to reliably fit into the cylindrical part simultaneously along the entire circumference.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of a bottle with a cover cup according to an embodiment of the present invention, Fig. 2 is a plan view of a cover cup constituting the bottle with a cover cup shown in Fig. 1, and Fig. 3 is a front view of the cover cup shown in Fig. 2. bottom view of
Figure 4 is a vertical sectional view taken along the - line in Figure 2;
The figure is a front view of the vicinity of the mouth and neck of the bottle constituting the bottle with cover cup shown in Figure 1, Figure 6 is a plan view of the vicinity of the mouth and neck of the bottle shown in Figure 5, and Figure 7 is the line taken along the - line in Figure 1. FIG. 8 is an enlarged longitudinal sectional view of section A in FIG. 1, and FIG. FIG. 2 is an enlarged vertical cross-sectional view of a portion corresponding to section A in FIG. 1 in the embodiment. DESCRIPTION OF SYMBOLS 1... Bottle with cover cup, 2... Plastic bottle, 2b... Mouth and neck, 3... Cover cup, 3a... Center wall, 5, 5'... Neck ring, 7... Hole, 8, 8'... ...Cylindrical part, 8b...
...Top part, 10...Bearing part, 11...Gap part.

Claims (1)

[Scope of utility model registration request] In a bottle with a cover cup in which a plastic cover cup having a hole through which the mouth and neck of the plastic bottle is inserted is fitted to a plastic bottle, a neck ring having a groove formed on the upper surface is provided below the neck and mouth. The cover cup is formed with a rib that rises from the inner end of the recessed central wall portion, defines the hole portion, extends radially inward from the upper end thereof, and engages with the groove portion in a rotationally non-rotatable manner on the lower surface. a flexible cylindrical part provided with a flange, and a support part surrounding the outside of the cylindrical part through a gap and rising from the central wall part, and in the fitted state, the neck ring is fitted into the upper part of the cylindrical part, and the outer surface of the upper part is in contact with the supporting part.