JP3654589B2 - Pilfer proof cap made of metal plate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pilfer proof cap (virgin cap) made of a metal plate.
[0002]
[Prior art]
Pilfer proof caps that can be visually confirmed when opened are roughly divided into those made of synthetic resin and those made of a thin metal plate such as a tin plate or an aluminum plate.
[0003]
Among them, the pilfer-proof cap made of metal plate is integrally connected to the main body 1 including the top plate 2 and the cylindrical portion 3 and the lower end of the main body 1 via the bridge 4 as shown in FIGS . 5 and 6. It consists of a PP band (pill proof band) 5, and by forming an inward annular protrusion 6 slightly below the top plate 2 in the cylindrical part 3, the packing 7 is fitted on the upper part of the main body 1 so that it cannot fall. A round packing mounting portion 8 is formed.
[0004]
A knurled portion 9 composed of a number of protrusions extending in the vertical direction is formed at a location of the packing mounting portion 8 in the cylindrical portion 3. Further, the lower end portion of the cylindrical portion 3 and the upper end portion of the PP band 5 are formed to have a slightly larger diameter, and a horizontal cut line (or slit) 11 and a bridge 4 are intermittently formed in the large diameter portion 10. ing.
[0005]
The PP band 5 is divided by one longitudinally long cut line 12, and the lower end of the cylindrical portion 3 and one end portion of the PP band 5 are connected by a narrow connecting portion 13 that cannot be broken by screwing back.
[0006]
The bottle mouth A is formed with a male screw portion C having a male screw B and a flange portion D positioned therebelow.
[0007]
The metal plate pilfer proof cap is inserted into the bottle mouth A, and then pressed firmly against the bottle mouth A so that the packing 7 is compressed. 14 and the bottle is sealed with a cap by caulking the PP band 5 to the lower surface of the flange D in the bottle mouth A.
[0008]
Then, when the main body 1 is screwed back in a sealed state, the bridge 4 is broken and opened. Even after opening, the PP band 5 remains connected to the main body 1 at the narrow connection portion 13, but if the PP band 5 is picked and twisted once or twice, the narrow connection portion 13 can be easily obtained. It can be broken.
[0009]
Instead of connecting the lower end of the cylindrical portion 3 and the PP band 5 with the bridge 4 as shown in the drawing, a cut line extending in the vertical direction is formed in the PP band 5 in a state of jumping along the circumferential direction. In this case, when the main body 1 is unscrewed, the PP band 5 spreads radially outward so that the flower opens, and is thereby opened.
[0010]
[Problems to be solved by the invention]
The male screw of the bottle mouth A is generally a right-hand screw, and therefore can be opened by rotating the cap counterclockwise. However, a consumer may accidentally rotate the main body 1 strongly in the screwing direction (clockwise direction).
[0011]
When the cap is screwed in such a sealed state, the inward thread 14 is deformed and gets over the male screw B of the bottle mouth A, so that a state where the screw becomes stupid is obtained. When this happens, the screwing of the inward thread 14 and the male screw B is released, and the PP band 5 remains crimped to the flange D, so that the cap cannot be opened simply by spinning around. become.
[0012]
If the cap is rotated strongly in the screwing direction for improper purpose or carelessness in the state where it is displayed in the store, it will be in a state where it can not be opened although it is not opened, and the fact can not be grasped from the appearance, Consumers who purchase the product will feel unpleasant.
[0013]
The present invention aims to improve such a current situation.
[0014]
[Means for Solving the Problems]
The metal plate cap of the present invention is basically the same as the conventional structure, and a top plate and a cylindrical portion integrally provided on the top plate form a main body that fits into the screw portion of the bottle mouth from the outside. A PP band is integrally connected to the lower end of the cylindrical portion of the main body, and an inward screw thread that is screwed into the screw portion of the bottle mouth is formed on the cylindrical portion of the main body.
[0015]
On the other hand, the PP band is caulked to the lower surface of the flange formed below the male screw portion in the bottle mouth. Further, the tube portion and the PP band are connected by a breakable bridge portion.
[0016]
And in invention of Claim 1, the site | part between this inward cyclic | annular protrusion and a top plate is formed in a part in a part of the cylinder part in the said body in a part slightly lower than a top plate inward. Formed as a packing mounting portion, an upper knurled portion in which a group of ridges bulged so as to protrude outward is aligned in the circumferential direction is formed at the position of the packing mounting portion of the cylindrical portion. On the other hand, a group of ridges bulged so as to protrude inwardly as a reinforcing means that makes it difficult to deform the inward thread formed in the cylindrical portion at the lower part of the cylindrical portion in the main body. forms a lower knurled portion that appears in the direction, and further, by inclining the respective ridges of the lower knurled portion with respect to the axis of the cylindrical portion.
[0017]
The invention of claim 2 has the same configuration as that of claim 1 except that the lower knurl portion is formed on substantially the entire portion of the main body below the inward annular protrusion.
[0018]
A third aspect of the present invention is the first or second aspect, wherein each of the protrusions constituting the upper and lower knurl parts is inclined with respect to the axis of the cylinder part , and the ridge group of the upper knurl part. The inclination direction of the lower knurl part and the inclination direction of the ridges of the lower knurled part are opposite to each other.
[0019]
[Operation and effect of the invention]
According to the present invention, due to the presence of the lower knurled portion as a reinforcing means, the inward thread formed on the cylindrical portion of the main body is difficult to deform, so the cap sealing the bottle mouth is strongly rotated in the screwing direction. Even if it is attempted to do so, the cap cannot be rotated with the level of ordinary human power, and therefore it is possible to prevent or remarkably suppress the phenomenon that the cap becomes idle and the screw becomes stupid. .
[0020]
As a result, it is possible to remarkably suppress inconveniences in which the consumer cannot unopen the product by accidentally rotating the cap in the screwing direction, and the fraud in which the product is made unopenable in the product distribution stage. .
[0021]
And since the knurled part (that is, the formation of irregularities by knurling) is adopted as the reinforcing means, not only can the processing be performed easily, but also the finger can be easily caught when the cap is unscrewed. There is an advantage that it is easy to open.
[0022]
If the product is put in the refrigerator and the cap is wet with dew, or if the product is immersed in ice water and the cap is wet with water, if the knurled part is formed only on the packing mounting part, the finger will cap It may be difficult to open by sliding, but if configured as in the present invention, the area of the knurled part will be much wider than before, so it can be easily opened even if the cap is wet with dew or water it can.
[0023]
In addition, the pilfer proof cap made of a metal plate requires a considerable amount of force to open. For this reason, elderly people and women may not be able to open easily, but in the present invention, finger catching is improved. Therefore, even a weak person can open the bag more easily than the conventional product.
[0024]
It is understood that the knurled portion functions as the reinforcing means because the knurled portion has a fine uneven cross-sectional shape and the section modulus is increased, so that the cylindrical portion is hardly deformed.
[0025]
And, if the protrusion of the lower knurl part bulges inward, it is understood that the adhesion to the male screw and the flange is improved, but the rigidity is improved even if the lower knurl part is provided at the lower part of the cylindrical part. It was possible to improve significantly.
[0026]
When configured as in claim 3, the finger catching at the time of opening is particularly good and suitable.
[0027]
By the way, the upper and lower knurling parts are performed by using an inner gear that fits inside the cylinder part and an outer gear that is located outside the cylinder part and rotating the cylinder part with the inner and outer gears sandwiched between them. In this case, if the group of ridges is inclined in the same direction with the upper and lower knurl parts, an external force that is inclined with respect to the shaft center of the gear acts on the cylinder part. May not be formed so as to continue accurately in the circumferential direction.
[0028]
On the other hand, when configured as in claim 3, the external forces trying to incline the cylinder portion in the upper and lower gear groups cancel each other, so that the upper and lower knurled portions are circular while the ridges are inclined. There is an advantage that it can be formed in a continuously continuous state in the circumferential direction.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. The same parts as those of the conventional art are denoted by the same reference numerals as those of the conventional example.
[0030]
(1). First embodiment (FIGS. 1 to 3)
1 to 3 show the first embodiment. 1A is a front view showing a state in which the cap is separated from the bottle mouth A. First, the structure will be described with reference to FIG.
[0031]
(A). Structure FIG. 1 shows a state before being attached to the bottle mouth A. In this state, the cap is provided with a main body 1 composed of a top plate 2 and a cylindrical portion 3 as in the prior art. A PP band 5 is connected to the lower end.
[0032]
As an example of the weakening means, the bridge 4 that is torn off by unscrewing is jumped off at the connecting portion between the cylindrical portion 3 and the PP band 5 by forming the horizontal cutting line 11 intermittently along the circumferential direction. Is formed.
[0033]
The PP band 5 is divided by one longitudinal cut line 12, but in the present embodiment, the upper end of the longitudinal cut line 12 and the end of the horizontal cut line 11 are connected by an inclined cut line 16. The vertically long cut line 11, the inclined cut line 12, and the inclined cut line 16 may be a thin score or sewing line that does not penetrate inside and outside.
[0034]
An upper knurl portion 9 is formed at a location of the packing mounting portion 8 in the cylindrical portion 3. On the other hand, the lower knurl part 17 is formed in the lower part of the cylinder part 3 as an example of the reinforcement means described in the claim.
[0035]
Both the upper and lower knurl portions 9 and 17 are formed by a group of elongated ridges (may be referred to as grooves) 18 and 19 that are inclined with respect to the axis of the cylinder portion 3. In this case, the ridges 18 constituting the upper knurl portion 9 and the ridges 19 constituting the lower knurl portion 17 are inclined in opposite directions, and the inclination angles are set to be almost the same.
[0036]
As can be understood from FIG. 1 (B) (C), ridges 19 of the upper knurled portion 9 is formed by bulging state or et outward before processing, while the lower knurled portion projection 19 of 17 is formed by bulging a tubular portion 9 to the state or et inward before processing.
[0037]
The reason why the protrusions 18 bulge radially outward in the upper knurled portion 9 is mainly to prevent the packing 7 from falling off from the packing mounting portion 8, but the finger catches better when opening. It also has advantages.
[0038]
On the other hand, when the protrusion 19 is bulged inward in the lower knurl portion 17, it is understood that the adhesion to the male screw B and the flange D is improved, but the lower knurl portion 17 is mainly limited to the large diameter portion 10 only. Even if it was provided, the rigidity could be greatly improved.
[0039]
[0040]
(B). Action and Advantage The cap is attached (capped) to the bottle mouth A in the same process as in the prior art.
[0041]
That is, as shown in FIG. 2, the cap 7 is inserted into the bottle mouth A of the bottle filled with the contents from above, and then the packing 7 is compressed by being pressed by the header 21, while maintaining the state of the roller 22. The inward screw thread 14 is formed by turning while pressing, and the lower part of the PP band 5 is caulked to the flange D of the bottle mouth A by the caulking tool 23 at the same time.
[0042]
Thereby, the bottle is sealed with the cap. Then, when the cap is rotated counterclockwise and screwed back, each bridge 4 is broken and opened. The PP band 5 remains connected to the main body 1 by the narrow connection portion 13. When the PP band 5 is picked and twisted, the PP band 5 is removed from the main body 1.
[0043]
And even if the consumer accidentally tries to screw the cap strongly in the direction of the arrow in FIG. 3 in the sealed state, or forcibly screw the cap for illegal purposes at the distribution stage, Due to the presence of 17, the cap does not rotate in the screwing direction, and the state where the inward thread 14 is screwed into the male screw B is maintained. As a result, it can be prevented that the screw becomes stupid and cannot be opened.
[0044]
By the way, the phenomenon that the screw becomes stupid by forcibly rotating the cap in the screwing direction is that the inward thread 14 of the cap spreads outward in the radius and is deformed. It is none other than being intermeshing.
[0045]
In the present embodiment, the lower knurl portion 17 does not reach the inward thread 14, and is mainly reinforced only at the lower portion of the large diameter. The reason why the inward thread 14 does not spread and deform only by forming the lower knurled portion 17 only at the lower portion is not necessarily clear, but can be considered as follows.
[0046]
That is, it is understood that the deformation of the cylindrical portion 3 when the cap is forcibly screwed proceeds from the lower end portion that is the weakest in strength, but the lower knurl portion 17 is provided at the lower end portion of the cylindrical portion 3 as in the present embodiment. When formed, the lower end portion of the cylindrical portion 3 is reinforced by the rib effect of the lower knurled portion 17, so that it is estimated that there is no chance for the cylindrical portion 3 to expand and deform.
[0047]
And if this assumption is made, in order to achieve the object of the present application, it is sufficient to prevent the deformation of the inward thread 14 at some height position of the cylindrical portion. It is estimated that the reinforcing means does not necessarily have to be formed on the entire cylindrical portion 3, and it is sufficient if it is partially formed at an appropriate height position below the packing mounting portion 8.
[0048]
By the way, an indication indicating the opening direction and an indication such as “turn in the direction of the arrow”, an indication such as “careful about the cut”, or an indication such as “please save in a cool and dark place” are printed on the tube portion 3. However, if the lower knurled portion 17 is formed only at the lower end portion of the cylindrical portion 3 as in the present embodiment, a smooth circumferential surface extends above the lower knurled portion 17, so that display printing is performed. There is an advantage that can be easily performed. Moreover, since the upper and lower knurled portions 9 and 17 are paired, there is an advantage that the design is neat.
[0049]
If the group of the ridges 18 and 19 in the upper and lower knurled portions 9 and 17 is inclined, there is an advantage that a novel design is excellent in aesthetics. In this case, if the ridges 18 of the upper knurl part 9 and the ridges 19 of the lower knurl part 17 are inclined in the opposite directions as in the present embodiment, the finger catching when opening is particularly good and suitable. .
[0050]
The upper and lower knurl parts 9 and 17 are rotated by sandwiching the cylinder part 3 between the inner and outer gears by using an inner gear fitted inside the cylinder part 3 and an outer gear positioned outside the cylinder part 3. In this case, when the group of ridges 18 and 19 inclines the upper and lower knurled parts 9 and 17 in the same direction, an external force that inclines the cylinder part 3 with respect to the axis of the gear. For this reason, there is a possibility that the upper and lower knurled portions 9 and 17 cannot be formed so as to be accurately continuous in the circumferential direction.
[0051]
However, if the inclinations of the protrusions 18 and 19 in the upper and lower knurl parts 9 and 17 are reversed as in the present embodiment, the external forces that incline the cylinder part 3 in the upper and lower gear groups cancel each other, Although the strips 18 and 19 are inclined, there is an advantage that the upper and lower knurled portions 9 and 17 can be formed in a state that is accurately continuous in the circumferential direction.
[0052]
(2). Other embodiment (Fig. 4 )
[0053]
In the second embodiment shown in FIG. 4 , the upper knurl portion 9 is formed parallel to the axis of the cylindrical portion 3, and the lower knurl portion 17 is inclined. The lower knurl portion 17 is formed almost entirely below the packing mounting portion 8. In addition, even if the lower knurl part 17 was formed in a state where it was connected to the upper knurl part 9 as shown in FIG. 4 , it was possible to print in a state where various displays could be read without hindrance.
[Brief description of the drawings]
1A and 1B are views showing a first embodiment, in which FIG. 1A is a front view, FIG. 1B is a cross-sectional view taken along the line BB of FIG. 1A, and FIG.
FIG. 2 is a diagram showing a capping step.
FIG. 3 is a front view after capping.
FIG. 4 is a front view of a second embodiment.
FIG. 5 is a front view of a conventional cap.
FIG. 6 is a view showing a state in which a conventional cap is attached to a bottle mouth.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body 2 Top plate 3 Cylindrical part 4 Bridge as weakening means 5 PP band 7 Packing 8 Packing mounting part 9 Upper knurl part 10 Large diameter part 11 Horizontal cut line 12 Long cut line 14 Inward thread 17 Lower knurl as reinforcement means Part 18, 19

Claims (3)

The top plate and the cylindrical portion integrally provided on the top plate form a main body that fits from the outside into the screw portion of the bottle mouth, and the PP band is integrally connected to the lower end of the cylindrical portion in the main body,
The cylindrical portion of the body, while being adapted to inwardly thread to be screwed to the threaded portion of the bottle mouth is formed, the PP bands are formed below the external thread portion of the bottle mouth Can be caulked to the bottom surface of the flange,
The tube part and PP band are connected by a breakable bridge, and when the main body is screwed back from the bottle mouth, the bridge is made of a metal plate pilfer proof cap,
By forming an annular projection inwardly at a portion slightly below the top plate in the cylindrical portion of the main body, a portion between the inward annular projection and the top plate forms a packing mounting portion, and the cylindrical portion the position of the packing mounting portion of, while the group of the bulging processed ridges so as to protrude outward forms a knurled portion on which are arranged in the circumferential direction,
A group of ridges bulged so as to protrude inward is provided in the circumferential direction as a reinforcing means that makes it difficult to deform the inward thread formed in the cylindrical portion at the lower portion of the cylindrical portion in the main body. Along forms a lower knurled portion which is, further, by inclining the respective ridges of the lower knurled portion with respect to the axis of the cylindrical portion,
Pilfer proof cap made of metal plate. The top plate and the cylindrical portion integrally provided on the top plate form a main body that fits from the outside into the screw portion of the bottle mouth, and the PP band is integrally connected to the lower end of the cylindrical portion in the main body,
The cylindrical portion of the main body is formed with an inward thread that is screwed into the screw portion of the bottle mouth, while the PP band is formed below the male screw portion of the bottle mouth. It can be caulked to the lower surface of the flange,
The tube part and PP band are connected by a breakable bridge, and when the main body is screwed back from the bottle mouth, the bridge is made of a metal plate pilfer proof cap,
By forming an inward annular projection in a portion of the cylindrical portion of the main body slightly below the top plate, a portion between the inward annular projection and the top plate is formed as a packing mounting portion, While forming the upper knurl part where the group of ridges bulged so as to protrude outward is aligned in the circumferential direction at the location of the packing mounting part,
Substantially the whole of which inwardly annular projection lower portion than in the main body, as a reinforcing means for hardly deformed inward threads formed on the tubular portion, which bulges machined so as to protrude inwardly group of ridges are to form the lower knurled portion that is lined in the circumferential direction, and further, by inclining the respective ridges of the lower knurled portion with respect to the axis of the cylindrical portion,
Pilfer proof cap made of metal plate. Each ridge constituting the upper and lower knurl portions is inclined with respect to the axis of the cylinder portion , and the inclination direction of the ridge group of the upper knurl portion and the inclination direction of the ridge group of the lower knurl portion are reversed. Facing
A pilfer-proof cap made of a metal plate according to claim 1 or 2.

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