JPH08133312A - Closing device - Google Patents

Abstract

PURPOSE: To provide a closing device that reduces bridge break angle on occasion of mounting a synthetic resin cap to a container and is capable of developing satisfactory tamper-evident capping. CONSTITUTION: The closing device is made up of a container having one or several holding claws 74 that are provided at intervals along the circumferential direction on the lower part of a bulging stage 72 of the container with a contracted diameter part 75 provided in between and a cap 50 having several holding projections 60 that are formed along the circumferential direction in projection in plate-like shape sloping toward the cap-opening side from a base end extending from the lower end of the main part 57 of the cap to the lower end of a tamper-evident ring to the surface of the inner wall of the tamper-evident ring 58 and separated from the main part with horizontal scores 56 provided in between.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container having a threaded portion formed on the outer periphery of a mouth portion, and a tamper evidence ring portion screwed into the mouth portion of the container and connected to the lower portion of the cylinder portion when the container is opened. The present invention relates to a closure device that is separated from the main part of the cap and has a tamper-evidence cap that indicates opening.

[0002]

2. Description of the Related Art Conventionally, a container having a threaded portion at its mouth and a cap opening ring portion which is screwed into the mouth of the container and is connected to the lower portion of the cylinder when the cap is opened. Various types of closure devices have been proposed as a closure device that includes a cap that has a function of displaying the opening when it is separated from the closure (referred to as pill-fur proof property or tamper-evidence property).

FIG. 6 shows, as an example of a conventional closing device, a closing device consisting of a cap and a container corresponding thereto, which is described in Japanese Patent Publication No. 52-14677.
This closure device comprises a top portion 3, a tubular portion 4 extending downward from the peripheral edge of the top portion and having a screw 5 on the inside thereof, and a reverse portion of the container check projection 14 and the cap check projection 8 when the cap body 2 is rotated in the opening direction. A cap 1 provided with a bridge 6 that is broken by a stopping force and an annular body 7 that is partitioned from the cap body 2 by the bridge 6, and a male screw 13 is formed in the mouth 12 so that the cap 1 is mounted. In addition, there is described a closing device including the container 11 in which the container check projection 14 is formed on the lower portion of the male screw 13. In this closing device, when the cap 1 is rotated in the opening direction, the cap check projection 8 provided on the inner surface of the annular body 7 of the cap 1 engages with the container check projection 14 provided on the container 11, The rotation of the ring-shaped body 7 is prevented by this, the bridge 6 is cut, and the ring-shaped body 7 is separated from the cap body 2.

FIG. 7 shows a synthetic resin container lid (cap) disclosed in Japanese Examined Patent Publication No. 1-30702 as another example of the conventional closing device.
A container having a container opening 30 in which a jaw 32 provided below the male screw 31 is formed, and a cap 20 attached to the container are described. This cap 20
Is provided with a top plate portion 21 and a tubular portion 22 that hangs down from the peripheral portion thereof, and the tubular portion 22 has a plurality of slits 23 extending in the circumferential direction and a break defined by a bridge 24 existing between the slits. A line 25 is formed, and the tubular portion 22 is divided into a main portion 26 above the breaking line 25 and a pill fur proof hem portion 27 below the breaking line, and the container mouth portion 30 is formed on the inner surface of the main portion 26. Is formed with a screw portion 28 that is screwed into the male screw 31 of the pill fur proof, and a plurality of protrusions 2 that protrude inward in the radial direction are formed on the inner surface of the pill fur proof hem portion 27.
9 is formed at a position apart from the bridge 24. As shown in FIG. 8, the protrusion 29 is formed in such a shape that the amount of protrusion inward in the radial direction gradually increases from the lower side to the upper side in the axial direction.

In this closing device, when the cap 20 is attached to the container mouth 30, the pill fur proof hem 27
Elastically deforms, and the projection 29 passes over the jaw portion 32 of the container mouth portion 30 and enters below. Then, when the cap 20 attached to the container mouth 30 is rotated in the opening direction, the protrusion 29 provided on the inner surface of the pill fur proof hem 27 is locked to the lower end of the jaw of the container mouth 30, and the pill Prevents upward movement of the fur proof hem 27, resulting in a cap 2
The tensile force acts on the bridge 24 connecting the main part 26 of 0 and the pilfer proof skirt 27, the bridge 24 is broken, and the pilfer proof skirt 27 is separated.

[0006]

However, the above-described conventional closing device has the following problems. The closure device described in the former Japanese Patent Publication No. 52-14677 discloses a cap check projection 8 or a container mouth 11 formed on the inner surface of the annular body 7 when the cap 1 is mounted on the container mouth 11. It is necessary to compress the formed container check projections 14 and rotate them relative to each other, but in order to compress these check projections, it is necessary to apply a considerable torque to the cap, and therefore the cap 1 It is relatively difficult to install and the bridge is broken when the cap is installed due to a considerably large torque applied to the cap. In order to solve the drawback, it is conceivable to reduce the amount of protrusion of the check protrusion or to make the check protrusion soft or flexible. In this case, the cap 1 is attached to the container mouth 11. After that, the engagement between the cap check projection 8 and the container check projection 14 becomes insufficient, and the tamper evidence property due to the unsealing display is impaired. Further, the above-described closing device has a drawback that the cap 1 and the container mouth are unique in shape, and it is difficult to apply the cap to a general synthetic resin cap or a metal cap.

The cap 20 described in Japanese Patent Publication No. 1-30702 is the pill fur proof hem 2.
By providing the protrusion 29 of 7 and the bridge 24 separately, the pill fur proof skirt 27 is provided when the protrusion 29 gets over the jaw 32 of the container mouth 30 when the cap 20 is mounted on the container mouth 30. Bridge 2 even if elastically deformed
4 is prevented from breaking. However, when the cap 20 is opened, the protrusion 29 provided on the inner surface of the pill fur proof skirt 27 is locked to the lower end of the jaw of the container mouth 30 to prevent the pill fur proof skirt 27 from moving upward. Since the structure is such that the bridge 24 is blocked by the tensile force acting on the bridge 24 connecting the main portion 26 of the cap 20 and the pill fur proof skirt 27 as a result,
If the cap is made of synthetic resin, the bridge 24
When a tensile force is applied to the bridge 24, the bridge 24 is easily stretched, and in order to break the bridge 24, it is necessary to rotate the cap body by a considerable angle in the opening direction.

In this kind of tamper-evidence cap, when the cap attached to the container mouth is turned in the opening direction from the initial position, the upper end of the container mouth separates from the inner surface of the cap or the liner. The rotation angle (seal release angle; hereinafter referred to as SR) at the time when the sealing property of the container is released, and the bridge when the cap attached to the container mouth is rotated from the initial position in the opening direction. Rotation angle up to the cutting position (bridge break angle;
(Hereinafter referred to as “BBAA”), the relationship between SRBA-BBAA
= 0 degrees or more, preferably 30 degrees or more. That is, when the cap is opened, it is desirable that the bridge be cut before the upper end of the container opening is separated from the liner or the like to release the hermetic seal. As a cap of the closing device, a cap made of a metal such as aluminum alloy is used, and the cap is put on the container mouth, and the cylinder is wound around the outer circumference of the container mouth. Can be made as small as 90 degrees or less, so that the SRABABA value can be made large. However, in the synthetic resin cap 20 described above, BBA may increase due to the extension of the bridge 24, and SRBA-BBAA may become 0 degrees or less.
There were points to be improved from the viewpoint of improving the tamper evidence.

Further, the cap 20 is attached to the container mouth 30.
When the pill fur proof hem 27 is elastically deformed when it is mounted on the chin, the protrusion 29 causes the protrusion 29 to move to the jaw 3 of the container mouth 30.
If the mechanical strength of the bridge 24 is weak, the bridge 24 may be broken when the cap is screwed, even if the projection 29 of the pill fur proof skirt 27 and the bridge 24 are provided separately. In order to prevent such inconvenience, the strength of the bridge 24 should be increased, or the breaking line 2 as shown by reference numerals 34 and 35 in FIG.
5. Engagement pieces are provided above and below the bridge 5, and when the cap is screwed, the bridge 2
It is conceivable to prevent 4 from being cut. However, if the strength of the bridge 24 is increased, it may be difficult to open the cap, or the bridge 24 may not be cut, and the tamper evidence property may be impaired. Further, it is not possible to provide the engaging pieces above and below the breaking line 25. It is difficult in the normal cap manufacturing process, a special manufacturing process is indispensable, and the manufacturing cost is increased.

The present invention has been made in view of the above circumstances, and is provided with a container in which both a metal cap and a synthetic resin cap can be mounted, and further, when the synthetic resin cap is mounted on the container. It is an object of the present invention to provide a closing device that can reduce B.A. and that can exhibit good tamper evidence.

[0011]

In the closing device according to the present invention, a threaded portion is formed on the outer periphery of the mouth portion, and a bulging step portion bulging radially outward is formed below the threaded portion. A container, a top plate portion and a tubular portion hanging from the periphery thereof, and a tamper evidence ring portion formed from the main portion by a horizontal score leaving a plurality of bridges under the tubular portion to form a synthetic resin. In a closing device consisting of a cap made of metal or a cap made of metal, below the bulging step of the container,
One or a plurality of locking claws are provided spaced apart along the circumferential direction via the reduced diameter portion, and the inner wall surface of the tamper evidence ring portion of the synthetic resin cap is provided with a tamper from the lower end of the main portion. A plurality of locking projections are formed along the circumferential direction, which are formed to project from a base end extending to the lower end of the evidence ring part in a plate shape inclined toward the cap opening direction side and are separated from the main part side by the horizontal score. Separately provided, when the synthetic resin caps are attached to the container mouth portion and rotated in the opening direction, the locking protrusions are engaged with the locking claws and the container mouth portion has the above-mentioned structure. When the metal cap is attached, the tamper evidence ring portion of the cap is engaged with the lower end of the bulging step.

In another aspect of the present invention, a container is provided with a threaded portion on the outer periphery of the mouth portion, and a bulging step portion bulging radially outward in the lower portion of the threaded portion, and a top plate. A tamper-evidence ring part that is divided from the main part by a horizontal score leaving a plurality of bridges in the lower part of the tubular part, and the tubular part hanging from the periphery of the tamper A closure device comprising a synthetic resin cap provided with a threaded portion that is screwed into a threaded portion of a container, wherein one or along the circumferential direction is provided below the bulging step of the container via a reduced diameter portion. On the inner wall surface of the tamper-evidence ring part of the synthetic resin cap, which is provided with a plurality of spaced-apart locking claws, the cap is opened from the base end part extending from the lower end part of the main part to the lower end part of the tamper evidence ring part. Projected in a plate shape inclined to the plug direction side A plurality of locking projections that are formed and are separated from the main portion side by the horizontal score are provided at intervals along the circumferential direction, and the synthetic resin cap is attached to the container mouth portion to open the cap. It is characterized in that the locking projection and the locking claw are engaged when turned to.

In the above-mentioned closing device, the locking claw of the container is opposite to the contact surface which engages with the locking projection of the cap when the synthetic resin cap is mounted on the container mouth and rotated in the opening direction. The side surface may be an inclined surface that gradually increases the protruding height toward the corresponding contact surface side.

In the above closing device, the inner wall surface of the tamper evidence ring portion of the cap may be provided with a recess for accommodating the locking projection when the tip of the locking projection is tilted outward in the radial direction. .

In the above closure device, the tamper evidence ring portion of the cap may be provided with a vertical score for opening the tamper evidence ring portion in a band shape.

In the closing device according to the present invention, the length from the lower end of the bulging step of the container to the upper end of the locking claw may be 3.0 mm or more.

In the closing device according to the present invention, the bridge breaking angle, which is the rotation angle up to the position where the bridge is cut by rotating the cap attached to the container mouth in the opening direction, is 90 degrees or less. desirable.

[0018]

In the closing device of the present invention, one locking pawl is provided below the bulging step portion of the container via the reduced diameter portion or a plurality of locking pawls are spaced apart along the circumferential direction. When attaching a metal cap to a container, wrap the tube around the outer periphery of the container mouth, and plastically deform so that the lower end of the tamper evidence ring of this cap covers the lower end of the bulging step of the container. When the cap is made of synthetic resin and the tamper evidence ring is provided with a locking projection, the locking projection of the tamper evidence ring is engaged with the locking claw of the container. By providing a reduced diameter portion between the bulging step portion of this container and the locking claw, the capping device such as a winding roller used when mounting the metal cap can be mounted without impairing the operability. You can

The container mouth is formed so as to project from a base end extending vertically from the lower end of the main part to the lower end of the tamper evidence ring to a plate shape inclined toward the cap opening direction, and the horizontal score. When mounting a synthetic resin cap provided with a plurality of locking protrusions separated from the main portion side along the circumferential direction, these locking protrusions have their tips radially outward. In the state in which the container is tilted toward, it goes over the locking claw of the container and moves to a predetermined position. When the cap attached to the container mouth is turned in the opening direction, one side of the locking projection abuts the contact surface of the locking claw, and rotation of the tamper evidence ring is blocked, and as a result, the cap is opened. The rotating force rotating in the direction directly acts on the bridge, and the bridge is easily cut.

A plurality of locking claws are arranged at intervals below the bulging step of the container mouth, and a plurality of locking protrusions are arranged on the inner wall of the tamper evidence ring of the synthetic resin cap. Alternatively, by arranging multiple locking protrusions on the inner wall of the tamper evidence ring part of the synthetic resin cap, it is possible to apply a force evenly to multiple bridges, making it easier to cut the bridges, By rotating the cap attached to the part in the opening direction, the bridge breaking angle (BBA), which is the rotation angle up to the position where the bridge is cut, can be reduced to 90 degrees, preferably 45 degrees or less. It will be possible.

Further, by providing the tamper evidence ring portion of the cap with a vertical score or a vertical weakening line for opening the tamper evidence ring portion in a band shape, the horizontal score is cut when the cap is opened and the cap is opened. The TE portion is separated from the main portion, and the tamper evidence ring portion is opened in a band shape, which can be easily removed from the container mouth portion.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. 1 to 3 show an embodiment of a closing device according to the present invention, in which reference numeral 50 is a cap and 70 is a container. In this embodiment, the cap 5
0 is made of synthetic resin such as polypropylene.
The container 70 is made of polyethylene terephthalate (PE
It is made of synthetic resin such as T). The container 70
Is not limited to this embodiment and may be a glass container.

The cap 50 has a circular top plate portion 51.
And a cap main body 53 including a tubular portion 52 that hangs down from the peripheral edge of the top plate portion 51, and a thin liner 54 provided on the inner surface side of the top plate portion 51 of the cap main body 53. There is. The tubular portion 52 includes a main portion 57 above the horizontal score 56 and a tamper evidence ring portion (hereinafter referred to as a TE ring portion) 58 below the horizontal score 56 by a horizontal score 56 leaving a plurality of thin bridges 55. It is divided into On the inner wall surface of the main portion 57, a screw portion 59 that is screwed with a male screw 71 formed on the outer periphery of the mouth portion of the container 70 is formed. In addition, on the inner wall surface of the TE ring portion 58, from the lower end of the main portion 57 to the TE ring portion 5
8 is formed so as to project from a base end portion 60a that extends substantially vertically to the lower end portion into a plate shape that is inclined toward the cap opening direction, and
As shown in FIG. 5, a large number of locking projections 60 separated from the main portion 57 side by the horizontal score 56 are provided along the circumferential direction. As shown in FIG. 3, the horizontal score 56 completely separates the main portion 57 side and the TE ring portion 58 side of the locking projection 60, and the main portion 57 side and the TE ring portion 5 are separated.
It is formed so as to cut the leader 55a protruding toward the 8 side to a predetermined depth, and the uncut portion of the leader 55a is a bridge 55.

The inner wall portion of the TE ring portion 58, which is located at a position facing the locking projection 60 when the locking projection 60 is bent outward in the radial direction, accommodates the locking projection 60. A bulging step portion 72 of the container 70 is provided in which a recess 61 is provided, and the locking projection 60 that is bent outward in the radial direction is accommodated.
In addition, the locking projection 60 is easily pushed and bent outward in the radial direction when the locking projection 74 gets over the locking claw 74 when the cap is closed.

The thickness and the protruding length of the locking projection 60 are such that the locking projection 60 abuts the locking claw 74 of the container 70 when the cap is closed, and the locking claw 74 is pressed and bent outward in the radial direction.
The degree of flexibility is such that the cap can be overcome, and when the cap is opened, the locking claw 74 engages with the one side surface 60b and is not easily deformed when rotated in the opening direction, so that the engagement state is reliably maintained. The mechanical strength is not particularly limited as long as it has a mechanical strength that can prevent the TE ring portion 58 from rotating in the cap opening direction, but the thickness is preferably 0.2 to 5 mm and the protruding length is about 1 to 10 mm. Further, the inclination angle α of the locking projection 60 shown in FIG.
The angle is preferably 2 to 90 degrees, more preferably 5 to 45 degrees.

In the container 70, a male screw 71 is formed on the outer periphery of the upper portion of the mouth 70a, a bulging step portion 72 that bulges in an annular shape is formed below the male screw 71, and the neck of the container below it. A flange 73 is formed. Further this container 7
At 0, a plurality of locking claws 74 are provided below the bulging stepped portion 72 via the reduced diameter portion 75 at intervals in the circumferential direction. In these locking claws 74, the contact surface 74a on the side with which one side surface 60b of the locking projection 60 contacts when the cap 50 is opened is formed into a substantially vertical surface, and the opposite surface thereof is the corresponding contact surface 74a.
It is an inclined surface 74b whose projection height is gradually increased toward.

From the lower end of the bulging step portion 72 of the container 70 to the locking claw 7
4 Length to the upper end, that is, the length of the reduced diameter portion 75 is 3.0 m
m or more, preferably about 3.0 to 10 mm.
When the length of the reduced diameter portion 75 is 3.0 mm or more, when the metal cap is wound around the container 70 and attached,
It becomes easy to roll up the lower end of the metal cap around the lower end of the bulging stepped portion 72 of the container 70 by a forming roller to form the metal cap.

In this embodiment, a large number of locking projections 60 (16 in FIG. 2) are provided on the TE ring portion 58, and four locking claws 74 are provided below the bulging step portion 72 of the container 70. It has a ratchet structure. These locking protrusions 6
The number of 0 and the number of the locking claws 74 are not limited to this example, and one or a plurality of the locking claws 74 and a plurality of the locking protrusions 60 may be used. In order to set it to 90 degrees or less, preferably 45 degrees or less, it is desirable to provide four or more, preferably eight or more, locking projections 60 when four locking claws 74 are provided on the container 70.

A method of using the closing device according to this embodiment will be described. After the container 70 is filled with the desired content liquid,
The cap 50 is conveyed to a cap mounting device (not shown), supports the lower surface of the flange 73, and is preferably conveyed in a suspended state, while the cap 50 is screwed and fitted into the mouth portion 70a thereof.
Attach and seal.

When the cap 50 is attached to the container opening 70a, the locking projection 60 of the TE ring portion 58 has an inner diameter larger than the outer diameters of the male screw 71 and the bulging step 72 of the container opening 70a. Since the TE ring portion 58 is set to be large, the TE ring portion 58 can easily pass through the outer circumference of the container mouth portion 70a.
As the male screw 71 of the container 70 and the screw portion 59 of the cap 50 are screw-fitted in the closing direction, the TE ring portion 58 moves downward and moves to the position of the locking claw 74 of the container 70. At this time, the other side surface 60c of the locking projection 60 comes into contact with the inclined surface 74b of the locking claw 74, and the locking projection 60 is pushed outward in the radial direction while riding over the protruding end of the locking claw 74. Since the recess 61 is provided on the inner wall surface of the TE ring portion 58 on the side where the locking projection 60 is pressed and bent, the locking projection 60 is pressed and bent by the locking claw 74 so that the one side surface 60b side contacts the recess 61. If pushed and bent, it is possible to get over the projection end of the locking claw 74 with almost no resistance.

A cap 50 attached to the container opening 70a
As shown in FIGS. 1 and 2, the winding is fastened with the lower end of the locking projection 60 reaching the vicinity of the lower portion of the locking claw 74. The locking projection 60 is erected so that its tip is brought into contact with the contact surface 74 a of the locking claw 74.

The upper end and the outer peripheral surface of the container opening 70a are in pressure contact with a liner 54 made of a soft resin provided on the inner surface of the top plate 51 of the cap 50, thereby sealing the container 70.

When the cap 50 attached to the container opening 70a is rotated in the opening direction to open the cap 50 of the closing device, each locking projection 60 is engaged with one side surface 60b by a slight rotational movement. It abuts against the abutment surface 74a of the stop pawl 74 and prevents the TE ring portion 58 from rotating in the opening direction.

Since the main portion 57 of the cap 50 is rotated in the opening direction and the TE ring portion 58 is prevented from rotating, the plurality of thin bridges 55 connecting the main portion 57 and the TE ring portion 58 are As the main part 57 rotates, the main part 57 is rapidly pulled in the lateral direction and immediately cut. As a result, cap 5
The TE ring portion 58 is separated from the 0 main portion 57. When the bridge 55 is cut, the liner 54 is in contact with the upper end of the container opening 70a and the outer peripheral surface near the upper end, so that the container 70 is maintained hermetically sealed.

When the main portion 57 of the cap 50 is further rotated in the opening direction, the liner 54 is separated from the upper end of the container opening 70a and the outer peripheral surface near the upper end, the hermetic seal of the container 70 is released, and the main portion 57 is further opened. Turn to remove from container opening 70a.

In the closure device of this embodiment, the cap 50
In the TE ring portion 58, a plate whose tip extends from the lower end portion of the main portion 57 to the lower end portion of the TE ring portion 58 substantially perpendicularly to the cap opening direction side rather than the radially inner side. A number of locking protrusions 60 formed in a protruding shape and separated from the main portion 57 side by the horizontal score 56.
Are provided along the circumferential direction, and a plurality of locking claws 74 are provided below the bulging step portion 72 of the container 70, and when the cap 50 attached to the container opening 70a is rotated in the opening direction, the locking projections are provided. 60
The one side surface 60b abuts and engages the abutment surface 74a of the locking claw 74 to prevent the TE ring portion 58 from rotating, and as a result, the rotational force for rotating the cap 50 in the opening direction is directly applied to the bridge 55.
The bridge 55 is easily disconnected. Furthermore, in the present embodiment, the four locking claws 74 are arranged at intervals in the container opening 70a, and a large number of locking projections 60 are arranged on the inner wall of the TE ring portion 58 of the cap 50. A force can be uniformly applied to the bridge 55, and the bridge 55 can be easily cut with a small rotation angle. Therefore, according to the closing device of this embodiment, the cap 50 attached to the container opening 70a is rotated in the opening direction, and the bridge breaking angle (BB) is the rotation angle up to the position where the bridge 55 is cut. .A) can be reduced to 90 degrees or less, preferably 45 degrees or less.

Further, in the closing device of this embodiment, on the inner wall surface of the TE ring portion 58 of the cap 50, from the base end portion 60a extending substantially vertically from the lower end portion of the main portion 57 to the lower end portion of the TE ring portion 58, the tip end. Is formed in a plate shape that is inclined toward the cap opening direction side rather than the radially inner side, and has a horizontal score of 5
A TE ring portion provided with a large number of locking projections 60 separated from the main portion 57 side by 6 and facing the locking projections 60 when the locking projections 60 are bent outward in the radial direction. Since the inner wall of 58 is provided with the recess 61 for accommodating the locking projection 60, the locking projection 6 is provided when the cap 50 is mounted on the container mouth 70a.
0 can be pushed and bent outward in the radial direction to ride over the locking claw 74, and the bridge 55 can be mounted without applying an extra force. Therefore, the cap 70 of the closing device can prevent the bridge from being cut when the cap is attached without providing any special means for preventing the bridge from being cut when the cap is attached.

FIG. 4 shows a second embodiment of the closing device of the present invention. The closure device according to this embodiment is configured with substantially the same components as the closure device of the previous embodiment. In this embodiment, the TE ring portion 58 of the cap 50 is provided.
Further, a vertical score 81 for opening the TE ring portion 58 in a band shape is provided. The vertical score 81 in this embodiment is connected to the horizontal score 56. The bridges 55 located on both sides of the vertical score 81 among the plurality of bridges 55 may be formed thicker than the other bridges 55.

In the closing device according to this embodiment, similarly to the previous embodiment, the cap 50 can be attached to the container opening 70a to open the cap 50, and the TE ring portion 58 is provided with the vertical score 81. As a result, the locking projection 6 is opened when the plug is opened.
The one side surface 60b of 0 abuts on the abutment surface 74a of the locking claw 74 to prevent the TE ring portion 58 from rotating, so that the TE portion 57 and the TE portion
The bridge 55 that connects the ring portion 58 is cut, and the TE ring portion 58 is opened from the vertical score 81 into a band shape by cutting the bridge 55 and cut from the main portion 57 of the cap 50.

In the closing device of this embodiment, the TE ring portion 58 is provided with the vertical score 81, and the TE ring portion 58 is opened like a band when the cap is opened.
The ring portion 58 can be easily removed from the container mouth portion 70a, and the unsealing indication is further clarified, so that the tamper evidence of the closing device can be further improved. Further, since the TE ring portion 58 does not remain in the container mouth portion 70a and can be removed together with the cap 50, the container 70 and the cap 50 including the TE ring portion 58 can be easily separated even after use, and the container 70 It becomes easy to discard and reprocess the cap 50 and the cap 50.

In this embodiment, the horizontal score 56 of the cap 50 is partially formed as a wide bridge without being formed over the entire circumference in the circumferential direction of the cap, and the vertical score 81 or adjacent to one end of the wide bridge. A configuration in which a vertical weakening line is provided may be used. Here, the vertical weakening line has a structure in which the TE ring portion 58 is cut in the vertical direction while leaving an uncut portion that serves as a vertical bridge in the center or the end portion, or a thin connecting portion remains in the TE ring portion 58. As shown in FIG. Also,
When forming the wide bridge, two vertical weakening lines may be provided so as to be adjacent to both ends thereof. By thus providing the two vertical weakening lines adjacent to both ends of the wide bridge, the TE ring portion 58 is opened by breaking one of the vertical weakening lines, and then the other vertical weakening line is left. It can be easily torn from the main part 57 of the cap 50 along the weakening line.

It is needless to say that each of the above-mentioned embodiments exemplifies the closing device of the present invention, and various modifications can be made. For example, in each of the above embodiments, the liner is arranged on the inner surface of the top plate portion 51 of the cap main body 53, but a ridge or the like is provided on the inner surface side of the top plate portion to contact the upper end of the container mouth to provide airtightness. The linerless cap without the liner may be used. In addition, in each of the above-described embodiments, the container 70 is a plastic container such as PET, but it can be configured as a glass container and the flange 73 is used.
You may use a container without.

FIG. 5 shows a third embodiment of the closing device of the present invention. This embodiment exemplifies a closing device in which a metal cap 90 such as an aluminum alloy is wound around the container opening 100. The metal cap 90 includes a cap body 93 made of a metal, which includes a top plate portion 91 and a cylindrical portion 92 hanging down from a peripheral edge of the top plate portion, and a thin synthetic resin liner provided on the inner surface side of the top plate portion 92. It consists of 94. A horizontal score 96 is formed in the cylindrical portion 92 in the circumferential direction while leaving a plurality of thin bridges 95, and thus the cylindrical portion 92 has a main portion 97 on the top plate portion 92 side and a TE below the main portion 97.
It is partitioned into a ring portion 98. The tubular portion 92 is wound and fastened along the male screw 101 on the outer peripheral surface of the container mouth portion 100. The lower end of the TE ring portion 98 of the tubular portion 92 is
It is formed so as to cover the lower end of the bulging step portion 102 of the container mouth portion 100.

The container mouth 100 has a male screw 101 on the outer peripheral surface.
A bulging step portion 102 that bulges radially outward in the radial direction is formed immediately below the male screw 101. A plurality of locking claws 103 are formed below the bulging step portion 102 along the circumferential direction via a reduced diameter portion 104.

In the closing device of this embodiment, the metal cap body having the straight tubular portion 92 before the tubular portion 92 is plastically deformed to fit the outer circumference of the container opening portion 100 is used.
The cylindrical portion 92 is attached to the male screw 10 on the outer peripheral surface of the container mouth 100 by a capping device equipped with a winding roller.
1, and the lower end of the TE ring portion 98 is molded and wound so as to cover the lower end of the bulging step portion 102. At this time, a top load is applied from the upper end side of the cap 90, and the tubular portion 92 is wound tightly while the container mouth portion 100 is strongly pressed against the liner 94. This container mouth 10
0, below the bulging step 102, preferably 3.0 to
Since the plurality of locking claws 103 are formed along the circumferential direction via the reduced diameter portion 104 having a length of about 10 mm, when molding the lower end of the TE ring portion 98 so as to wrap the lower end of the bulging step portion 102, The reduced-diameter portion 104 facilitates cap molding with a molding roller or the like, and the locking claw 103 does not interfere.

As shown in FIG. 5, when the cap 90 attached to the container opening 100 is turned in the opening direction, the cap body 93 is screwed onto the male screw 101 of the container opening 100 and rises, but the TE ring. The lower end of the portion 98 is the container mouth portion 100.
The plurality of bridges 95 connecting the TE ring portion 98 and the main portion 97 are cut off because the lower end of the bulging step portion 102 of the TE ring portion 98 is locked and prevented from rising. It has been separated from, and the opening has been clearly indicated. When a cap made of a metal such as aluminum alloy is used, the bridge 95 can be immediately cut by the tensile force generated between the TE ring portion 98 and the main portion 97 when the cap is opened. Desirably, it can be made as small as 45 degrees or less.

The tubular portion 9 of the cap 90 of this embodiment
2, the horizontal score 96 is provided on the main part 97 and the TE ring part 9 except for one wide bridge and a plurality of narrow bridges.
It is also possible to form a vertical weakening line adjacent to the end of the wide bridge so as to open the TE ring portion 98 in a band shape. By thus providing the TE ring portion 98 with the vertical weakening line, the bridge 95 is broken and the horizontal score 98 is cut when the cap is opened, and the TE ring portion 98 is opened in a band shape and remains in the container mouth portion 100. It can be removed together with the cap 90 without using it, and the container and the cap including the TE ring portion can be easily separated even after use, and the container and the cap can be easily discarded and reprocessed.

In the above embodiment, the case where the metallic cap 90 is wound around the container opening 100 is illustrated, but the container opening 100 and the container opening 70 according to the embodiment shown in FIGS. It has substantially the same function. That is, both the synthetic resin cap 50 shown in FIGS. 1 to 3 and the metallic cap 90 shown in FIG. 5 can be attached to these container opening portions 70 and 100. That is, when the synthetic resin cap 50 is attached to the container opening 70, 100, the locking projection 60 formed on the inner wall surface of the TE ring portion 58 is locked to the locking claw 74, 103 of the container opening 70, 100. Thus, tamper evidence is obtained, and when the metal cap 90 is attached, the lower end of the TE ring portion 98 is engaged with the bulging stepped portions 72, 102 to obtain tamper evidence. Also, the container mouth 70
Between the bulging step portions 72, 102 of the a, 100 and the locking claws 74, 103, the reduced diameter portion 7
By providing 5,104, when the metal cap 90 is mounted, the reduced diameter portion 104 facilitates the cap forming by the forming roller or the like, and particularly the winding molding of the lower end portion of the TE ring portion 98.

[0049]

As described above, according to the closure device of the present invention, one member or a plurality of members are arranged along the circumferential direction below the bulging step portion of the container mouth via the reduced diameter portion. If a metal cap is attached to this container with a stop claw, wrap the tube around the outer circumference of the container mouth, and cover the lower end of the TE ring of this cap with the lower end of the bulging step. When the synthetic resin cap having the TE ring portion provided with the locking projections is mounted by plastically deforming it, the locking projections of the TE ring portion are engaged with the locking claws. Since this container has a reduced diameter portion between the bulging step and the locking claw, it can be mounted without impairing the operability of the capping device such as the winding roller used when mounting the metal cap. You can Therefore, in this closing device, a metal cap and a synthetic resin cap can be attached to the container.

When a synthetic resin cap having a locking projection provided on the TE ring portion is mounted on this container, the cap mounted on the container mouth is turned in the opening direction, and one side surface of the locking projection is opened. Comes into contact with the abutment surface of the locking claw, the rotation of the TE ring part is blocked, and as a result, the rotational force that turns the cap in the opening direction directly acts on the bridge, and the bridge is easily cut. The bridge breaking angle (BBAA), which is the rotation angle to the position where the BB is cut, can be reduced, and the BBA can be 90 degrees for both synthetic resin caps and metal caps. Below, preferably 45
It is possible to provide a closing device which has a B.B.A. smaller than the S.R.A. and a good tamper evidence property.

On the inner wall surface of the TE ring portion of the cap,
A large number of base parts extending substantially vertically from the lower end of the main part to the lower end of the TE ring part are formed to project in a plate shape inclined toward the cap opening direction side, and separated from the main part side by a horizontal score. A locking projection is provided, and a recess for accommodating the locking projection is provided on the inner wall portion of the TE ring portion located at a position facing the locking projection when the locking projection is bent outward in the radial direction. With this configuration, when the cap is attached to the mouth of the container, the locking projection can be pushed outward in the radial direction to overcome the locking claw, without applying extra force to the bridge. Can be installed. Therefore, the cap of this closing device does not require any special means for preventing the bridge from being cut when the cap is attached,
It is possible to prevent the bridge from being cut when the cap is attached.

Since the TE ring portion is provided with a vertical score or a vertical weakening line and the TE ring portion is opened like a band when the cap is opened, the TE ring portion can be easily removed from the container mouth portion. Thus, the unsealing indication becomes more clear, and the tamper evidence of the closing device can be further improved. Also, since the TE ring part does not remain in the container mouth part and can be removed together with the cap,
Even after use, the container and the cap including the TE ring portion can be easily separated, and the container and the cap can be easily discarded and reprocessed.

[Brief description of drawings]

FIG. 1 is a front sectional view of a closing device showing a first embodiment of the present invention.

FIG. 2 shows the same closing device and is a sectional view taken along line II-II in FIG.

FIG. 3 is an enlarged perspective view of a main part of the same closing device.

FIG. 4 is a front view of a main part of a closing device showing a second embodiment of the present invention.

FIG. 5 is a partially sectional front view of a closing device showing a third embodiment of the present invention.

FIG. 6 is a perspective view showing an example of a conventional closing device.

FIG. 7 is a partially sectional front view showing another example of the conventional closing device.

8 is a perspective view of a main part of the closing device shown in FIG.

[Explanation of symbols]

50,90 ... Cap, 51,91 ... Top plate part, 52,
92 ... Cylinder part, 53,93 ... Cap body, 54,94
...... Liner, 55,95 …… Bridge, 56,96 ……
Horizontal score, 57,97 ... Main part, 58,98 ... TE ring part (tamper evidence ring part), 59 ... Screw part, 60 ... Locking protrusion, 60a ... Base end part, 60b ....
One side, 70,100 ... container, 70a ... container opening,
71,101 ... Male screw, 72,102 ... Swelling step, 7
3 ... Flange, 74, 103 ... Locking claw, 74a ...
Abutting surface, 74b ... inclined surface, 75, 104 ... reduced diameter portion,
81 ... Vertical score.

Claims (7)

[Claims] 1. A container in which a threaded portion is formed on the outer periphery of a mouth portion, and a bulging step portion that bulges radially outward in a radial direction is formed below the threaded portion, and a container is suspended from a top plate portion and its peripheral edge. And a cap made of a synthetic resin or a metal cap having a tamper evidence ring section separated from the main section by a horizontal score, leaving a plurality of bridges at the bottom of the cylinder section. A tamper-evidence ring portion of the synthetic resin cap is provided below the bulging step portion of the container with one locking claw provided with a reduced diameter portion or a plurality of locking claws spaced apart in the circumferential direction. On the inner wall surface of the main portion, the base end portion extending from the lower end portion of the main portion to the lower end portion of the tamper evidence ring portion is formed to project in a plate shape inclined toward the cap opening direction side, and is separated from the main portion side by the horizontal score. Terena A plurality of locking projections are provided along the circumferential direction, and when the synthetic resin cap is attached to the container mouth and rotated in the opening direction, the locking projections engage with the locking claws. A closing device, wherein the tamper-evidence ring portion of the cap is engaged with the lower end of the bulging step portion when the metal cap is attached to the container mouth portion. 2. A container in which a threaded portion is formed on the outer circumference of the mouth portion, and a bulging step portion that bulges radially outward in the radial direction is formed below the threaded portion; And a tamper-evidence ring part formed by a horizontal score to leave a plurality of bridges in the lower part of the cylinder part, and the threaded part of the container is formed on the inner wall surface of the main part. In a closing device comprising a synthetic resin cap provided with a screw part to be screwed, one or a plurality of parts are arranged along a circumferential direction below a bulging step part of the container via a reduced diameter part. And a locking claw provided on the inner wall surface of the tamper evidence ring portion of the synthetic resin cap, the base end portion extending from the lower end portion of the main portion to the lower end portion of the tamper evidence ring portion in the cap opening direction side. It is formed in the shape of an inclined plate and A plurality of locking protrusions separated from the main part side by the horizontal score are provided apart from each other along the circumferential direction, and when this synthetic resin cap is attached to the container mouth part and rotated in the opening direction, A closing device characterized in that the locking projection and the locking claw are engaged with each other. 3. The locking claw of the container has a surface opposite to the contact surface which engages with the locking projection of the cap when the synthetic resin cap is mounted on the container opening and rotated in the opening direction. The closing device according to claim 1 or 2, wherein the closing device is an inclined surface whose projection height gradually increases toward the corresponding contact surface side. 4. The tamper-evidence ring portion inner wall surface of the cap is provided with a recess for accommodating the locking projection when the locking projection is tilted with its tip outward in the radial direction. The closure device according to any one of items 1 to 3. 5. The closure device according to claim 1, wherein the tamper evidence ring portion of the cap is provided with a vertical score that opens the tamper evidence ring portion in a band shape. 6. The closing device according to claim 1, wherein the length from the lower end of the bulging step portion of the container to the upper end of the locking claw is 3.0 mm or more. 7. The bridge breaking angle, which is the rotation angle up to the position where the bridge is cut by rotating the cap attached to the container mouth in the opening direction, is 90 degrees or less. Closure device according to any one of 6 to 6.