JPH0433248Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The invention is based on a bottle stopper with a flange that is inserted into the mouth of a bottle.
The present invention relates to an improvement in a bottle sealing lid made of a thin metal plate for irremovably sealing the mouth of the bottle.

[Prior Art] Generally, as is well known in the art, this type of bottle sealing lid is made of a thin metal plate that forms a cylindrical body with a top plate that fits over the mouth of the bottle. In the body,
A gripping piece for opening is formed at the lower end thereof, and a cutting line or slit groove extending from the base of the gripping piece toward the upper end of the cylinder is provided, and an annular shape at the mouth of the bottle is formed in the cylinder. The part at the same height as the engagement groove is sealed by narrowing it into the annular engagement groove, while the cylindrical body is sealed by turning the gripping piece outward and pulling it in the circumferential direction. It is designed to be opened by tearing it open.

However, in this conventional bottle sealing lid, the part of the cylindrical body that corresponds to the annular engagement groove at the mouth of the bottle is
When sealing is performed by squeezing into the annular engagement groove, a phenomenon occurs in which the bottle sealing lid rotates idly with respect to the bottle, which not only causes consumers to feel anxious that the sealing function is incomplete; When opening the bottle, there was a problem in that when the handle was turned over and pulled, the bottle sealing lid rotated idly, making it difficult to open the bottle.

Therefore, as prior art, Japanese Utility Model Publication No. 55-75649 and Japanese Utility Model Publication No. 55-30382 disclose that approximately the upper half of the cylindrical body of the bottle sealing lid is provided with an uneven shape that extends in an inclined manner in the vertical direction over the entire circumference. It is proposed to prevent the bottle mouth from idling by providing an uneven part formed across the bottle and squeezing the uneven part into an annular engagement groove in the mouth of the bottle.

[The problem that the idea aims to solve]

By the way, the uneven portion in this prior art is formed by knurling the cylindrical body over the entire circumference of the cylinder, and each uneven strip has a material that is hardened by work hardening during the knurling process. Therefore, minute cracks have occurred or are in a state where cracks are likely to occur, so if these uneven parts are squeezed into the annular engagement groove on the outer periphery of the mouth of the bottle, the narrowing will cause As a result, large cracks occur, which reduces the tightening strength against the mouth of the bottle.Furthermore, each uneven portion acts as a rib, increasing the rigidity against radial inward pressing force. A large amount of force is required to squeeze the uneven portion, which is provided with uneven stripes over the entire circumference, into the annular groove at the mouth of the bottle. This was because sufficient functionality could not be ensured.

Therefore, the inventor of the present invention proposed that the bottle stopper that is inserted into the mouth of the bottle is tightly fitted into the mouth of the bottle in a non-rotatable state. Focusing on the fact that a flange with approximately the same outer diameter dimension is integrally provided, we provided an uneven part on the top of the cylindrical body of the bottle sealing lid with a vertical uneven part formed over the entire circumference. If the inner diameter of this uneven portion is made smaller than the outer diameter of the flange of the bottle stopper, the flange of the inner stopper can be tightened by the uneven portion, so that the bottle sealing lid can be tightened against the bottle. I thought it would be possible to hold it in a non-rotatable manner.

However, if the inner diameter of the uneven portion is simply made smaller than the outer diameter of the flange of the bottle stopper, machining of the uneven portion becomes difficult, and furthermore, it becomes difficult to transfer the bottle sealing lid or to the parts feeder. It has been found that a problem occurs in that the upper end of a bottle sealing lid frequently gets stuck in the lower end of another bottle sealing lid during an alignment process using the bottle sealing lid.

That is, the cylindrical body of the bottle sealing lid is formed to have a diameter somewhat larger than the outer diameter of the flange of the bottle stopper so that it can be fitted into the mouth of the bottle after the bottle stopper is inserted into the mouth of the bottle. Therefore, in order to be able to tighten the collar of the bottle stopper with the uneven part formed on the upper end of the cylinder, the depth of the uneven part must be made considerably large, but the depth of the uneven part of the cylinder When forming an uneven part on the upper end by knurling, a strong pressing force acts irregularly on the lower edge of the uneven part, so if the depth of the uneven part is increased beyond a certain level, the lower edge of the uneven part Cracks are particularly likely to occur at certain points, and the cylindrical body is susceptible to distortion and deformation. It was impossible to prevent the bottle sealing lid from spinning idly.

Furthermore, as is widely known, for example, from Utility Model Application Publication No. 55-127050, it is widely known that an uneven portion is formed on the upper end of a cylindrical portion of a bottle sealing lid. By forming the outer diameter of the uneven portion of the upper end of the cylindrical body to be larger than the outer diameter of the lower part of the cylindrical body, it is possible to transport a large number of bottle sealing lids in a container,
When inserting parts into a hopper in a parts feeder for alignment, measures are taken to prevent the lower part of another bottle sealing lid from fitting into the upper end of the bottle sealing lid. Since the difference between the inner diameter and the inner diameter cannot be too large, if the inner diameter of the uneven part is made smaller, the outer diameter must also be reduced. Therefore, when a large number of bottle sealing lids are placed in a hopper in a container or parts feeder, the upper end of the bottle sealing lid often gets stuck in the lower part of other bottle sealing lids. This interfered with the alignment process.

The present invention eliminates processing problems and problems such as getting stuck in other bottle seals.
The object of the present invention is to provide a bottle sealing lid that can be held non-rotatably using a bottle stopper.

[Means to solve the problem]

In order to achieve this object, the present invention forms a cylindrical body with a top plate made of a thin metal plate, which fits into the mouth of a bottle into which a flanged bottle stopper is fitted, and the cylindrical body has a bottom end. is formed with a gripping piece for opening, and is provided with a cutting line or slit groove extending from the base of the gripping piece toward the upper end of the cylinder, and an annular shape on the outer periphery of the mouth of the bottle in the cylinder. In a bottle sealing lid configured such that a portion corresponding to the engagement groove is narrowed into the annular engagement groove, an uneven strip extending in the vertical direction is provided in a portion of the cylindrical body that corresponds to the brim of the bottle stopper. An uneven part is formed over the entire circumference, and the inner diameter of the uneven part is set to be smaller than the outer diameter of the flange of the bottle stopper. An annular protrusion connected to the top plate and an annular groove below the uneven portion are formed continuously with the uneven portion.

[Functions and effects of the idea]

With this structure, since the inner diameter of the uneven portion is smaller than the outer diameter of the brim of the bottle stopper, after the bottle stopper is sealed,
Since the flange portion of the bottle stopper can be strongly tightened by the uneven portion, the bottle sealing lid can be held so as not to rotate idly.

In that case, by forming an annular groove continuous with the uneven part below the uneven part, when forming the uneven part by knurling, a large pressing force acts irregularly on the lower edge of the uneven part. Therefore, even if the depth of the uneven portion is increased, it is possible to prevent cracks from occurring at the lower edge of the uneven portion and from causing distortion in the cylindrical body. Since the annular groove serves as a reinforcing rib, the rigidity of the cylindrical body against radial forces can be improved.

In addition, since an annular protrusion connected to the top plate is formed above the uneven portion, even when a large number of bottle sealing lids are placed in a container or the hopper of a parts feeder, the upper end of the bottle sealing lid will not overlap with other bottle sealing lids. In addition, this annular protrusion also serves as a reinforcing rib, which, together with the annular groove formed below the uneven part, acts in the radial direction. The rigidity of the cylindrical body against the force applied can be further improved.

Therefore, according to the present invention, problems such as cracks occurring or deformation of the cylindrical body during machining of uneven parts, and problems such as the upper end of the bottle sealing lid fitting into the lower end of another bottle sealing lid can be solved. The cylindrical body can tightly tighten the bottle stopper without causing any problems, preventing the bottle sealing lid from rotating idly against the mouth of the bottle.
The function of sealing the bottle can be significantly improved, and the bottle can be opened extremely easily.Furthermore, the rigidity of the cylindrical body can be improved, so there is no possibility that the cylindrical body will become deformed and become unusable during transportation or alignment process. This has the effect of significantly reducing accidents such as poor sealing.

〔Example〕

Next, an embodiment of the present invention will be explained based on the drawings (Figs. 1 to 6). In the drawings, reference numeral 1 indicates a bottle;
Reference numeral 2 indicates a bottle stopper with a flange 2a that is fitted into the mouth of the bottle 1, and an annular engagement groove 1a is formed on the outer peripheral surface of the mouth of the bottle 1.

The bottle stopper 2 is made of a soft synthetic resin such as polyethylene, and the flange 2a of the bottle stopper 2 is fitted with a crown body 3 made of a thin metal plate such as aluminum or stainless steel. The cap 3 is integrally fitted to the bottle stopper 3 by folding the lower edge of the cap toward the lower surface of the flange 2a. The outer periphery of the crown body 3 is provided with a concave-convex portion 4 formed by forming concavo-convex strips extending along the vertical direction over the entire circumference, and the lower edge 3a of the crown body 3 is provided with a radial pattern. The uneven portion 5 is formed by forming uneven lines extending over the entire circumference.

Reference numeral 6 indicates a bottle sealing lid that fits over the mouth of the bottle 1 into which the bottle stopper 2 is fitted, and the bottle sealing lid 6 is made of a thin metal plate such as aluminum and has a cylindrical body 6a with a top plate 6b. The approximately mid-height portion of the cylindrical body 3a is connected to the annular engagement groove 1 at the mouth of the bottle 1.
The bottle 1 is sealed by narrowing the bottle to within a.

An arc-shaped slit groove 7 opened at the lower end of the cylindrical body 6a in the bottle sealing lid 6 is formed to form a gripping piece 8 that can be turned over outward. A cutting line 9 or slit groove extending upward from the base end of the gripping piece 8 is cut in a portion above the gripping piece 8.

Then, an uneven portion 10 having an uneven shape extending in the vertical direction over the entire circumference is provided at a portion of the upper part of the cylindrical body 6a corresponding to the collar 2a of the bottle stopper 2, and an inner diameter of the uneven portion 10 is provided. Dimension D1 is the inner stopper 2
The outer diameter dimension D3 of the uneven portion 10 is set to be smaller than the outer diameter dimension D2 of the collar 2a, and the outer diameter dimension D3 of the uneven portion 10 is set to be approximately the same as the outer diameter dimension D4 of the cylindrical body 6a.

A cylindrical body 6a is placed above the uneven portion 10.
An annular protrusion 11 having an outer diameter D5 larger than an outer diameter D4 is formed, and a weakening line 12 is formed on the inner peripheral surface of the annular protrusion 11 to serve as a guide when separating the cylindrical body 6a from the top plate 6b. While the annular groove 13 is carved around the circumference, an annular groove 13 is formed below the uneven portion 10 so as to be continuous with the uneven portion 10 .

In this configuration, the bottle sealing lid 6 is fitted over the mouth of the bottle 1 into which the bottle stopper 2 has been fitted and pressed downward, and the uneven portion 10 of the cylindrical body 6a is pressed against the elasticity of the bottle stopper 2. By fitting the cylindrical body 6a into the flange 2a of the bottle 1 and then squeezing it into the annular engagement groove 1a of the bottle 1,
The bottle stopper 2 is sealed, but the uneven part 10 on the cylindrical body 6a engages with the uneven part 4 on the outer periphery of the brim 2a, and the bottle sealing lid 6 is held non-rotatably with respect to the bottle stopper 2. Since the bottle stopper 2 is tightly fitted into the mouth of the bottle stopper 1 and cannot be rotated, it is possible to reliably prevent the bottle sealing lid 6 from rotating idly relative to the bottle 1.

By forming the uneven portion 10 on the cylindrical body 6a, it is possible to prevent distortion from occurring at the lower edge of the uneven portion 10, so that the inner diameter dimension D1 of the uneven portion 10 in the cylindrical body 6a is Diameter dimension
Even if the depth dimension of the uneven portion 10 is increased so as to be smaller than D2, it is possible to prevent the cylindrical body 6a from being strained and deformed, and the uneven portion 10 and the annular protrusion 11 on the cylindrical body 6a can be prevented from deforming due to strain. This serves as reinforcing ribs and improves rigidity against radial forces, making it possible to significantly reduce deformation during transportation.

Furthermore, since the annular protrusion 11 is formed at the upper end of the cylindrical body 6a, the outer diameter dimension D3 of the uneven portion 10 is
Although it is formed to be approximately the same as the outer diameter dimension D2 of a, in other words, the difference in diameter between the inside and outside of the uneven portion 10 is made small to facilitate processing of the uneven portion 10, This can reliably prevent the upper end of the bottle sealing lid 6 from fitting into the lower end of another bottle sealing lid 6.

In this case, if the weakening line 12 is carved on the inner peripheral surface of the annular projection 11 as in the embodiment, the annular projection 11 is used to prevent the bottle sealing lid 6 from overlapping.
Since the weakening line 12 can be formed, tearing and opening can be facilitated without complicating the structure.

Note that the lower edge of the crown 3 of the bottle stopper 2 may be flat, but if the uneven portion 5 is formed as in the embodiment, the crown 3 will remain the same even after the bottle stopper 2 is heat sterilized. Since it is possible to reliably prevent idling relative to 2, there is an advantage that the idling prevention function of the bottle sealing lid 6 can be further improved.

In other words, if the lower edge of the crown body 3 is flat, the lower edge only presses the flange elastically, so when the bottle stopper 2 is heated and sterilized, the heat causes the flange 2a to become flat. The crown body 3 is deformed and the cap 3 is the bottle stopper 2.
However, if a radially extending uneven portion 5 is formed on the lower edge 3a of the cap 3 of the bottle stopper 2 as in the embodiment, the flange may spin idle during heat sterilization. Even if 2a is plastically deformed, the uneven portion 5 bites into the lower surface of the flange 2a, so that the cap 3 can be reliably held in a non-rotatable manner relative to the bottle stopper 2, thereby preventing the bottle sealing lid 6 from turning idly. This can be prevented more reliably.

Note that the uneven portion 10 in the cylindrical body 6a described above,
The annular projection 11 and the annular groove 13 are simultaneously formed using round shaft-like knurling molds 14 and 15 of different sizes and diameters as shown in FIGS. 7 and 8.

That is, the smaller-diameter knurled mold 14 of both knurled molds is formed to have an outer diameter such that the cylindrical body 6a fits loosely therein, and the knurled teeth 16 are recessed in a portion near the upper end of the small-diameter knurled mold 14. A protrusion 17 having a wedge-shaped cross section is formed above the knurled teeth 16 so as to protrude beyond the outer circumferential surface of the small diameter knurling die 14.
An annular groove 18 having a diameter slightly smaller than the root diameter of the knurled tooth 16 is formed below the knurled tooth 16.

On the other hand, the large-diameter knurled die 15 is provided with knurled teeth 19 corresponding to the knurled teeth 16 in the small-diameter knurled die 14 so as to protrude from the outer peripheral surface 15a of the large-diameter knurled die 15. An annular groove 20 above the tooth 19
On the other hand, below the knurled teeth 19,
Annular groove 18 in the small diameter knurled mold 14
An annular protrusion 21 corresponding to the annular projection 21 is formed.

In this configuration, after the cylindrical body 6a is fitted into the small diameter knurled die 14, the cylindrical body 6a is fitted between the two knurled dies 14 and 15 while pressing the large diameter knurled die 15 toward the small diameter knurled die 14. When rotated with both knurled molds 1
By meshing the knurled teeth 16 and 19 in 4 and 15, an uneven portion 10 is formed with intermittent inward protrusions on the cylindrical body 6a, and at the same time,
By fitting the annular protrusion 17 on the small diameter knurl 14 and the annular groove 18 on the large diameter knurl mold 15, a line of weakness 1 is formed above the uneven portion 10.
3 is formed, and the annular groove 18 on the small-diameter knurled die 14 and the annular protrusion 17 on the large-diameter knurled die 15 fit together, so that the annular groove 18 is formed below the uneven portion 10.
are formed respectively.

In that case, by forming the annular groove 13 below the uneven portion 10 in the cylindrical body 6a, when forming the uneven portion 10, the uneven portion 10
Since strong tensile force is prevented from being applied to the lower edge of the cylindrical body 6a, it is possible to prevent cracks from forming at the lower edge of the uneven portion 10. Moreover, the portion of the cylindrical body 6a where the uneven portion 10 is formed can be prevented. The lower part is the annular groove 1 in the small-diameter knurled mold 14.
8 and annular projection 1 in large diameter knurled mold 15
7, so even if the concavo-convex portion 10 is made to protrude radially inward,
There is no wobbling movement of the cylindrical body 6a, and therefore the uneven portion 10 can be processed reliably and accurately.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of the bottle sealing lid separated from the mouth of the bottle, and FIG.
The figure is a sectional view of FIG. 1, FIG. 3 is a sectional view of FIG. 1, FIG. 4 is a sectional view of the main part in a sealed state, and FIG. FIG. 6 is a cross-sectional view taken from the side of FIG. 5, FIG. 7 is a plan view of the knurled type, and FIG. 8 is a cross-sectional view taken from the side of FIG. 7. 1... Bottle, 1a... Annular engagement groove, 2... Bottle stopper,
2a...Brim, 3...Cap, 6...Bottle sealing lid, 6a
... Cylindrical body, 6b ... Top plate, 8 ... Holding piece, 9 ...
... Cutting line, 10 ... Uneven part, 11 ... Annular projection, 1
3...Annular groove.

Claims (1)

[Scope of utility model registration request] A thin metal plate is used to form a cylindrical body with a top plate that fits into the mouth of a bottle into which a flanged bottle cap is inserted, and a gripping piece for opening is formed on the lower end of the cylindrical body. At the same time, a cut line or slit groove extending from the base of the gripping piece toward the upper end of the cylinder is provided, and a portion of the cylinder corresponding to the annular engagement groove on the outer periphery of the mouth of the bottle is provided with the groove. In a bottle sealing lid configured to be narrowed into an annular engagement groove, a concavo-convex strip extending in the vertical direction is formed over the entire circumference at a portion of the cylindrical body corresponding to the brim of the bottle stopper. The inner diameter of the uneven portion is set to be smaller than the outer diameter of the brim of the bottle stopper, while an annular projection connected to the top plate of the cylindrical body is provided above the uneven portion. A bottle sealing lid characterized in that an annular groove is formed at the lower part of the part in a continuous manner with the uneven parts.