JP2004352312A - Easy-opened plug container lid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an easy-opened plug container lid enabling even children or women or weak persons like aged people to open the plug easily, clearly showing a fraudulent plug opening, having no possibility that the contents in the container leaks out of it and enabling an already installed existing capping line to be utilized as it is. <P>SOLUTION: The problem described above is resolved by providing an arrangement as follows. This plug comprises a body cap installed at the opening of a container and an outer cap externally installed at the body cap. The body cap has a top surface wall formed with a cavity part and a skirt part suspended down from a circumferential edge of the top surface wall. A female thread corresponding to a male thread formed at an outer circumferential surface of the opening is formed at an inner circumferential surface of the skirt part, the outer circumferential surface of the skirt part is formed with axial knurls. An outer cap has a top plate wall and a skirt wall suspended down from its circumferential edge, forms an engaging member suspended down at the top plate wall and engaged with a cavity of the body cap, forms a rib engaged with the knurls at the inner circumferential surface of the skirt wall and arranging at a circumference a cylindrical wall having a larger diameter than that of the outer circumference of the skirt wall and having a holding part at the outer circumference of the skirt part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an easy-open container lid that is used by being plugged into the mouth of a container for storing beverages and the like, and more specifically, uses an outer cap that is larger in diameter than the main body cap and has a grip portion. Also, the present invention relates to an easy-open container lid that can be easily opened even by a weak person such as a child, a woman, or an elderly person.
[0002]
[Prior art]
BACKGROUND ART Container lids used for many containers for storing beverages, edible oils, seasonings, and the like are made of plastic mainly from the viewpoint of manufacturing and material costs. The plastic container lid is screwed tightly to the mouth of the container to be liquid-tight, and maintains that state. In addition, many of the plastic container lids having a tamper-evident mechanism, which remain open when the main body cap is opened, can prevent various types of mischief.
On the other hand, many attempts have been made to increase the diameter of the main body cap in order to eliminate the difficulty in opening the package due to the provision of the tamper evidence mechanism. However, in that case, the capping line for the already set container needs to be significantly remodeled, and it is also difficult to return to the main body cap having the normal diameter again. For such a reason, it has been proposed to cover a main body cap having a normal diameter with an overcap having a large diameter for the purpose of easy opening of the cap.
[0003]
The followings are known as plastic easy-open container lids as described above.
According to Japanese Patent Application Laid-Open No. 2003-40297, a cap body 53 that connects a ring-shaped sealing band 51 to a lower end of a peripheral wall 50 via a thin brittle bridge 52, and is attached to the cap body 53. The cap body 53 is provided with knurls 55 on the outer peripheral surface of the peripheral wall 50, and the overcap 54 is provided with a plurality of engaging portions 57 on the inner peripheral surface at the lower end of the peripheral wall 56 at equal intervals in the circumferential direction. A knurled eye 58 corresponding to the knurled eye 55 of the cap main body 53 is provided on the inner peripheral surface of the peripheral wall 56, and when the overcap 54 is mounted on the cap main body 53, the engaging portion 57 of the overcap 54 forms a ring with the cap main body 53. And a knurled portion 55 of the cap body 53 and a knurled portion of the overcap 54. Are those in which the eye 58 is fitted, thereby, plastic easy unplugging container closure is disclosed in which easily opened by the opening torque relatively low.
[0004]
[Patent Document 2] Japanese Patent Application Laid-Open No. 2003-72796 Also, according to Patent Document 2, a screw cap 62 screwed into a mouth portion 61 of a container 60 and a screw cap 62 when the screw cap 62 is opened. And an overcap 65 which is put on the screw cap 62 via the engaging means 64 so as to expose the pillfap proof band 63, whereby the opening torque is relatively reduced. A plastic easy-open container lid that is lowered and easy to open is disclosed.
[0005]
[Problems to be solved by the invention]
In the plastic easy-open container lid of Patent Document 1, the outer diameter of the overcap 54 is formed to be larger than the outer diameter of the cap body 53, and the opening torque can be relatively reduced to facilitate opening. The cap 54 is prevented from coming off in the axial direction from the cap main body 53 by engaging the engaging portion 57 in the gap between the cap main body 53 and the ring-shaped sealing band 51, so that the contents in the container are exhausted. When the integral body of the cap body 53 and the overcap 54 is screwed again to the mouth of the container, the overcap 54 covers the thin brittle bridge 52, which makes it difficult to determine whether the package has been tampered with. Further, when the overcap 54 is plugged into the cap body 53, the knurls 55 of the cap body 53 are engaged with the knurls 55 of the overcap 54, and the cap body 53 is opened depending on the state of the engagement. When the container rotates in the opening or closing direction, the container may leak in the container.
[0006]
The plastic easy-open container lid of Patent Document 2 also has an effect that the opening torque can be relatively reduced by the overcap 65 having a large outer diameter and the opening can be easily performed. In this case, however, the pill-proof band 63 is exposed. However, the overcap 65 covers the thin-walled portion 66 between the screw cap 62 and the pill-proof band 63, and there is a problem in that it is difficult to determine whether or not the package has been tampered with. Further, similarly to Patent Document 1, when the overcap 65 is plugged into the screw cap 62, the screw cap 62 may rotate in the opening direction as in the case of Patent Literature 1. The contents may leak.
[0007]
In any case, the cap body 53 of Patent Literature 1 and the screw cap 62 of Patent Literature 2 both use the swelling of their lower ends to prevent the overcaps 54 and 65 from separating in the axial direction. The thin fragile bridge 52 and the thin portion 66 are covered with the overcap 65, so that it is difficult to determine whether or not the tamper has been opened, and at the time of tapping, the cap body 53 and the screw cap 62 are opened in the opening direction. And the possibility of leakage of the contents of the container occurs.
[0008]
Therefore, an object of the present invention is to open easily even a weak person such as a child, a woman, or an elderly person, and can see at a glance the unauthorized opening, and there is no danger of leakage of the contents of the container. An object of the present invention is to provide an easy-open container lid that can be used with a slight modification of a line.
[0009]
[Means for Solving the Problems]
The present invention has been proposed to achieve the above object, and has the following configuration.
That is, according to the present invention, there is provided a container lid including a main body cap attached to a container mouth and an outer cap externally provided to the main body cap, wherein the main body cap has a concave portion formed in the center of the top surface. And a skirt portion hanging down from the periphery of the top surface wall, and the skirt portion has a female thread corresponding to a male screw thread formed on the outer peripheral surface of the container opening on the inner peripheral surface of the skirt portion. A thread is formed, a plurality of knurls extending in the axial direction are formed on the outer peripheral surface of the skirt portion, and the outer cap has a top plate wall and a skirt wall hanging down from a peripheral edge of the top plate wall. The top plate wall is formed with a locking member that hangs downward from the inner surface of the top plate wall and locks with the recessed portion of the main body cap. A plurality of ribs that engage the knurl The outer periphery of the skirt wall, easy unplugging container closure, characterized in that the cylindrical wall having a gripping portion with larger diameter than the skirt wall is circumferentially provided is provided.
[0010]
Further, according to the present invention, the locking member is a cylindrical ring having a locking projection on an outer peripheral surface hanging down from the top surface wall, and the concave portion is an annular wall surface hanging down from the top surface wall, A bottom wall for closing a lower end of the wall surface, and a locking ridge protruding inward is formed on the wall surface. When the outer cap is attached to the main body cap, the locking protrusion is formed. The above-mentioned easy-opening container lid is provided, wherein the lid easily elastically climbs over and engages with the locking ridge.
[0011]
Further, according to the present invention, there is provided the above easy-open container lid, wherein a holding projection for holding a lower inner peripheral surface of the cylindrical ring is formed on an upper surface of the bottom wall.
[0012]
Further, according to the present invention, there is provided the easy-opening container lid, wherein an inclined line which is inclined downward in an opening direction is formed at an upper end of the knurl and / or a lower end of the rib. Is done.
[0013]
Further, according to the present invention, the gripping portion has a plurality of irregularities extending in the axial direction formed on the outer peripheral surface of the cylindrical wall, or the easy-open container lid has a polygonal outer peripheral surface. Provided.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a half sectional view showing an embodiment of the present invention in which an easily-openable container lid is attached to a mouth of a container, and FIG. 2 is a plan view thereof. In both figures, the easily-openable container lid 1 comprises a main body cap 4 attached to the mouth 3 of the container 2 and an outer cap 5 which is externally provided on the main body cap 4. It has a top wall 7 having a recess 6 formed in the center, and a skirt portion 8 hanging down from the periphery of the top wall 7. The skirt portion 8 has an inner peripheral surface formed with a mouth 3 of the container 2. A female thread 10 corresponding to the male thread 9 formed on the outer peripheral surface is formed. Further, a plurality of knurls 11 (see FIGS. 3 and 4) extending in the axial direction are formed on the outer peripheral surface of the skirt portion 8, and the outer cap 5 has a top plate wall 12 and a skirt wall 13 hanging down from the periphery thereof. The top plate wall 12 is provided with a locking member 14 which hangs downward from the inner surface thereof and engages with the concave portion 6 of the main body cap 4, and the skirt wall 13 has the inner peripheral surface formed on the inner peripheral surface thereof. A plurality of ribs 15 (see FIGS. 7 and 8) that engage with the knurl 11 are formed, and a cylindrical wall 17 having a larger diameter and a grip 16 is provided around the outer periphery of the skirt wall 13. ing.
[0015]
The container 2 is not particularly limited as long as it can screw the main body cap 4 of the easy-opening container lid 1 to the opening 3 thereof, and may be of any type or material. In this embodiment, a bottle-type plastic container for beverages, edible oils, seasonings, and the like is assumed. In addition, in FIG. 1, 18 is a collar.
[0016]
As described above, the main body cap 4 has a skirt portion 8 hanging down from the periphery of the top wall 7, and the band 21 is attached to the lower end of the skirt portion 8 with a tamper-evident mechanism 20 for preventing unauthorized opening. The band 21 and the main body cap 4 are integrally formed. The tamper-evident mechanism 20 connects the skirt portion 8 of the main body cap 4 and the band 21 below the skirt portion 8 with an easily breakable bridge 22, and provides the skirt portion 8 and the band 21 with stoppers 23, 23. These are rotated synchronously in the screwing direction (closing direction), and the main body cap 4 is screwed (closed) to the mouth portion 3 of the container 2, and conversely, the main body cap 4 is rotated in the unscrewing direction (opening direction). If this is done, the bridge 22 will be broken and opened, leaving the band 21 at the mouth 3 of the container 2, and the fact of unauthorized opening will become clear. On the other hand, the main body cap 4 can be unscrewed (opened) from the mouth 3 of the container 2 by ordinary opening.
[0017]
The concave portion 6 of the main body cap 4 has an annular wall surface 24 hanging down from the periphery of the top wall 7 and a bottom wall 25 closing a lower end of the annular wall surface 24. Is formed on the upper surface of the bottom wall 25, and a holding projection 27 for holding a lower inner peripheral surface of a cylindrical ring 31 of the outer cap 5, which will be described later, is formed. The plurality of knurls 11 provided on the outer peripheral surface of the skirt portion 8 of the main body cap 4 are formed with inclined lines 11a whose upper ends are inclined downward toward the opening direction.
[0018]
As described above, the outer cap 5 has a configuration in which a skirt wall 13 is hung from the periphery of the top plate wall 12, and the locking member 14 formed on the top plate wall 12 It is a cylindrical ring 31 that hangs down from the middle and has a locking projection 30 on the outer peripheral surface. Further, the plurality of ribs 15 provided on the inner peripheral surface of the skirt wall 13 of the outer cap 5 are formed with inclined lines 15a whose lower ends are inclined downward toward the opening direction. Further, a cylindrical wall 17 is provided on the outer peripheral surface of the skirt wall 13 so as to cover the outer peripheral surface thereof, and the cylindrical wall 17 is provided with a grip portion 16 which also serves as a slip stopper. That is, the grip portion 16 has, for example, a plurality of irregularities 32 extending in the axial direction on the outer peripheral surface of the cylindrical wall 17 or an outer peripheral surface having a polygonal shape (not shown). Since the outer cap 5 is configured as described above, the outer diameter of the outer cap 5 is considerably larger than the outer diameter of the main body cap 4, that is, the outer diameter of the skirt portion 8. 21 can be opened easily, and the integrated body of the main body cap 4 and the outer cap 5 can be easily unscrewed or screwed.
[0019]
Next, a method of using the easily-openable container lid 1 having the above configuration will be described.
First, the container 2 is filled with the contents, and then the integrated component of the main body cap 4 and the band 21 is screwed tightly to the mouth portion 3 by a capping line to make the container liquid-tight. At this time, the skirt portion 8 of the main body cap 4 and the stopper 23 provided on the band 21 are tuned and rotated in the screwing direction (closing direction), so that the easily breakable bridge 22 of the tamper evidence mechanism 20 is broken. The main body cap 4 can be tightly screwed (closed) to the mouth 3 of the container 2 without performing.
[0020]
Thereafter, as shown in FIG. 10, the outer cap 5 is plugged into the main body cap 4 at a line for plugging the outer cap 5. In this tapping, the body cap 4 and the outer cap 5 cannot be moved in the axial direction and cannot be rotated. That is, the cylindrical ring 31 which is the locking member 14 of the outer cap 5 is inserted into the concave portion 6 of the main body cap 4, and the locking projection 30 provided on the outer peripheral surface of the cylindrical ring 31 is The elastic member 26 is elastically passed over the locking ridge 26 formed on the base 24 and is locked. Further, the lower inner peripheral surface of the cylindrical ring 31 is held by the holding protrusion 27 formed on the upper surface of the bottom wall 25 of the recess 6. Thus, the locking state between the main body cap 4 and the outer cap 5 is more firmly held, so that the outer cap 5 does not come off from the main body cap 4, that is, the axial direction cannot be moved.
[0021]
On the other hand, the plurality of ribs 15 on the inner peripheral surface of the skirt wall 13 of the outer cap 5 are engaged with the plurality of knurls 11 on the outer peripheral surface of the skirt portion 8 of the main body cap 4 and cannot rotate. At this time, even if the inclined line 15a at the lower end of the plurality of ribs 15 of the outer cap 5 hits the inclined line 11a at the upper end of the plurality of knurls 11 of the main body cap 4, it is slightly closed. Is rotated in the direction of tightening (the direction of arrow A in FIG. 6), so that the main body cap does not rotate in the opening direction, so that loosening of the main body cap 4 and the container 2 does not occur by any chance. ing.
[0022]
In opening the container lid, as shown in FIG. 11, the integrated body of the main body cap 4 and the outer cap 5 is opened with fingers using the plurality of uneven shapes 32 of the gripping portion 16 of the outer cap 5. , Can be removed from the mouth 3 of the container 2. That is, as described above, since the outer diameter of the outer cap 5 is considerably larger than the outer diameter of the main body cap 4, even a weak person by the leverage principle can easily open the integrated body of the main body cap 4 and the outer cap 5 easily. Can be removed from the mouth 3 of the container 2 and the contents can be taken out. If the contents remain in the container 2, the integrated body of the main body cap 4 and the outer cap 5 can be screwed into the mouth portion 3 again, which facilitates storage. On the other hand, once the integrated body of the main body cap 4 and the outer cap 5 is opened, that is, when the easily breakable bridge 22 of the tamper-evident mechanism 20 is broken, the band 21 falls to the flange 18 of the mouth 3 and the outer cap Since the cylindrical ring 31 is inserted into the concave portion 6 of the main body cap 4 and locked so as not to move in the axial direction, the outer cap 5 does not need to cover the easily breakable bridge 22 of the tamper evidence mechanism 20. (See FIG. 1), the fact that the band 21 has fallen on the collar 18 and the easily breakable bridge 22 has been cut allows the fact of unauthorized opening to be immediately and clearly recognized, and the danger is easily reduced. Can be avoided.
[0023]
Although the embodiment of the present invention has been described above, it should be understood that the specific configuration is not limited to this, and that changes may be appropriately made without departing from the spirit of the present invention.
[0024]
【The invention's effect】
According to the present invention, the existing capping line can be utilized with a slight modification such that a capping machine for externally attaching the outer cap to the main body cap is attached to the existing capping line. The use of the outer cap having the portion has the effect that even a weak person can easily open the container lid.
In addition, since the main body cap and the outer cap are locked at the upper portion thereof and cannot be moved in the axial direction, the main body cap can be prevented from being moved in the axial direction without being covered with the outer cap. There is an effect that can be clearly seen at a glance.
Furthermore, by the structure of the locking portion between the main body cap and the outer cap, the lower inner peripheral surface of the cylindrical ring of the outer cap can be firmly held, and the outer cap can be prevented from coming off from the main body cap. .
In addition, even when the outer cap rib hits the knurl of the main body cap when the outer cap is plugged into the main body cap, the lower end of the rib hits the inclined line in the opening direction of the nal and the force in the closing direction is applied to the main body cap. When the outer cap is plugged into the body cap by tightening the body cap against the mouth of the container, even when the rib hits any position of the knurl, the body cap is held against the mouth of the container. Since the tightening is always performed, there is an effect of eliminating the fear of leakage of the contents.
[Brief description of the drawings]
FIG. 1 is a half sectional view showing an embodiment of the present invention, in which an easily-openable container lid is attached to a mouth of a container.
FIG. 2 is a plan view of the easy-open container lid shown in FIG.
FIG. 3 is a plan view of a main body cap of the easily-openable container lid showing the embodiment of the present invention.
FIG. 4 is a half sectional view of a main body cap of the easy-open container lid shown in FIG. 3;
FIG. 5 is a rear view of a main body cap of the easily-openable container lid shown in FIG. 3;
FIG. 6 is a schematic diagram showing the direction of force applied when the outer cap is plugged into the main body cap of the easily-openable container lid of the present invention.
FIG. 7 is a plan view of an outer cap of the easy-open container lid according to the present invention.
8 is a half sectional view of an outer cap of the easy-opening container lid of FIG. 7;
FIG. 9 is a rear view of the outer cap of the easily-openable container lid of FIG. 7;
FIG. 10 is a half sectional view showing a state in which an outer cap is plugged into a main body cap of the easily-openable container lid of the present invention.
FIG. 11 is a half cut sectional view showing a state in which the easy-open container lid of the present invention is opened.
FIG. 12 is a half sectional view showing a conventional example of an easy-open container lid.
FIG. 13 is a cross-sectional view showing a conventional example of an easy-open container lid.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Easy-open container lid 2, 60 Container 3, 61 Mouth part 4 Main body cap 5 Outer cap 6 Recessed part 7 Top wall 8 Skirt part 9 Male thread 10 Female thread 11 Narr 11a, 15a Inclined line 12 Top plate wall 13 Skirt Wall 14 locking member 15 rib 16 gripping portion 17 cylindrical wall 18 flange 20 tamper-evident mechanism 21 band 22 easily breakable bridge 23 stopper 24 annular wall surface 25 bottom wall 26 locking protrusion 27 holding protrusion 30 locking protrusion 31 Cylindrical ring 32 Concavo-convex shape 50, 56 Peripheral wall 51 Ring-shaped sealing band 52 Thin fragile bridge 53 Cap body 54, 65 Overcap 55, 58 Knurl eye 57 Engagement part 62 Screw cap 63 Pillfaproof band 64 Engaging means

Claims (5)

A container lid comprising a main body cap attached to the container mouth, and an outer cap external to the main body cap,
The main body cap has a top wall having a recess formed in the center of the top surface, and a skirt portion hanging down from a peripheral edge of the top wall, and the skirt portion has the container opening formed on an inner peripheral surface of the skirt portion. A female thread corresponding to the male thread formed on the outer peripheral surface is formed, and a plurality of knurls extending in the axial direction are formed on the outer peripheral surface of the skirt portion,
The outer cap has a top plate wall and a skirt wall hanging down from a peripheral edge of the top plate wall. The outer cap hangs downward from an inner surface of the top plate wall and engages with a recess of the main body cap. The skirt wall has a plurality of ribs formed on the inner peripheral surface of the skirt wall for engaging with the knurl. The outer periphery of the skirt wall has a diameter larger than that of the skirt wall. An easy-open container lid, wherein a large cylindrical wall having a grip portion is provided. The locking member is a cylindrical ring having a locking projection on an outer peripheral surface hanging down from the top plate wall, and the concave portion has an annular wall surface hanging down from the top wall and a bottom wall closing a lower end of the wall surface. A locking ridge protruding inward is formed on the wall surface, and when the outer cap is attached to the main body cap, the locking projection elastically deforms the locking ridge. 2. The easy-open container lid according to claim 1, wherein the lid easily covers and engages. 3. The easy-open container lid according to claim 2, wherein a holding projection for holding a lower inner peripheral surface of the cylindrical ring is formed on an upper surface of the bottom wall. The easy-opening container according to any one of claims 1 to 3, wherein an inclined line that is inclined downward toward the opening direction is formed at an upper end of the knurl and / or a lower end of the rib. lid. The easy-open plug according to any one of claims 1 to 4, wherein the grip portion has a plurality of uneven shapes extending in an axial direction formed on an outer peripheral surface of the cylindrical wall, or an outer peripheral surface having a polygonal shape. Container lid.

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