JP2012111535A - Hinged cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hinged cap capable of breaking a score for forming a spout in a single operation of opening an upper lid which can prevent enhancement of a force for opening an upper lid by simultaneously breaking of the upper lid and the score.SOLUTION: In the hinged cap, spout opening means for stripping off a breaking part 15 for forming a spout which is defined and formed by an endless weakening line 17 in a top wall 10 of a cap body 2, from the top wall when opening an upper lid, includes: a connecting mechanism for connecting the breaking part 15 for forming a spout with an inner face of the top wall of an upper lid 3, and a delay transmission mechanism formed with a bending deformation region 19 capable of bending and deforming to break the endless weakeing line 17 behind the disengagement at least between a cap body locking part 22 on the opposite side of a hinged connection part 4, and an upper lid side locking part 34, when opening the upper lid.

Description

  The present invention relates to a hinge cap in which a cap body and an upper lid are hingedly connected, and more particularly to a hinge cap without a pull ring that can simultaneously open a spout by opening the upper lid.

  Conventionally, as a synthetic resin cap, the upper lid is hinged to the container main body, and by pulling a pull ring erected on the spout formation portion for spout formation partitioned through an endless score on the top wall of the container main body, A hinge cap that breaks the score and opens the spout is widely used as a lid for seasoning containers and the like. In the case of the conventional hinge cap, at the time of opening, at least two operations of opening the upper lid through the hinge portion and then breaking the score by pulling the pull ring to open are required. Moreover, there is a problem that when pulling the pull ring to open the score by breaking the score, the pull ring diameter is limited by the container diameter and cannot be increased. In order to solve the problem, the present applicant previously provided a hinge cap without a pull ring that can open a spout integrally with the upper lid when the upper lid is opened without pulling the pull ring (see Patent Document 1).

  As shown in FIG. 12, the hinge cap 80 without a pull ring described in Patent Document 1 has an endless shape formed on the top wall 82 of the cap main body 81 on the periphery of the pouring cylinder 83 and the pouring opening planned portion. And a tear plate 88 is provided on the inner surface of the top wall 87 of the upper lid 86 so that the lower end of the tear device is sealed. It is welded to the peripheral portion of the plate 85. Therefore, by opening the top cover 86, the thin-walled portion 84 joined to the seal plate 85 is torn, the planned spout portion closed by the seal plate 85 is opened, and a spout is formed. The spout can be formed with one touch by opening the plug.

JP 2005-289389 A

  In the case of the above proposed prior art, the spout can be formed integrally with the top lid when the top lid is opened and can be opened without a pull ring, so that the spout can be formed even when the cap diameter is small. There is an advantage that it can be effectively applied to a container having a small diameter. In this prior art, the opening mechanism of the upper lid and the cap body is formed by an engagement between an upper lid-side engaging protrusion protruding from the upper lid on the side opposite to the hinge side and a cap main-side engaging protrusion protruding from the cap body. Since the locked state is maintained by the joint, the opening of the upper lid requires a plug opening force that the upper lid side engaging protrusion can overcome the cap main body side engaging protrusion. On the other hand, for the opening of the spout, at the same time, the weakening line formed on the peripheral edge of the seal plate that is welded to the lower end of the tearing tool that protrudes from the top surface of the upper lid is broken, and the entire seal plate is removed from the cap body. Need to be separated. Accordingly, in this opening mechanism, the weakening line is broken at the same time when the upper lid is opened. Therefore, when the upper lid is opened, the normal upper lid opening force (that is, the engagement between the upper lid side engaging projection and the cap side engaging projection is applied). Unscrewing force) and the weakening line breaking force that breaks the weakening line add up, and a considerably higher opening force is required compared to the normal hinge cap opening, and there is still a problem to be solved in this point is doing.

  Accordingly, the present invention is intended to solve the above-described problems of the prior art, releasing the engagement between the engagement projections of the upper lid and the cap body that act at the time of opening the plug, and breaking the score for forming the spout It is an object of the present invention to provide a hinge cap capable of breaking the weakening line of the spout formation by one operation of opening the upper lid so that the opening force can be prevented from increasing by shifting the start in time.

A hinge cap of the present invention that solves the above problems comprises a cap body that is attached to a container mouth neck and an upper lid that is connected to the cap body by a hinge connecting portion, and the cap body includes a ceiling wall and a ceiling wall. A cylindrical peripheral wall that hangs from the outer periphery, and the upper lid includes a top wall and a skirt wall that hangs from the outer peripheral edge of the top wall, and the upper lid side locking portion formed at the end of the cylindrical peripheral wall and the A spout is formed by engaging a cap main body side locking portion that protrudes upward from the top surface of the top wall, and is defined by an endless weakening line on the top wall between the cap main body and the upper lid. A hinge cap having spout opening means for peeling off the tearing part from the top wall when the top lid is opened, wherein the spout opening means includes a spout forming part for spout formation of the cap body and the top wall of the top cover. Connecting machine that connects the inner surface And a delay transmission mechanism for breaking the endless weakening line at a later time than the disengagement between the cap main body side locking portion on the opposite side of the hinge connecting portion and the upper lid side locking portion when the upper lid is opened. It is characterized by comprising.
When the upper lid is opened by the delay transmission mechanism, the coupling mechanism accompanying the opening of the upper lid until the engagement between the upper lid side locking means formed on the side opposite to the hinge coupling portion and the cap main body side locking means is released. Since the tearing force to the endless weakening line does not act, the tearing force to the endless weakening line acts after the upper lid side locking means and the cap body side locking means are disengaged. The upper lid opening force and the weakening line breaking force are dispersed, and the upper lid opening and the spout opening can be easily performed in one operation without increasing the opening force.

  The connection mechanism and the delay transmission mechanism are formed by welding the lower end of the welding protrusion formed by the connection mechanism depending on the inner surface of the top wall of the upper lid and the upper surface of the spout forming tearing portion, The delay transmission mechanism is configured such that a bending deformation region capable of bending deformation is formed between the endless weakening line and a welding position between the welding protrusion lower end of the spout formation tearing portion. be able to. By configuring in this way, until the upper lid side locking means and the cap main body side locking means are disengaged with the opening of the upper lid, the bending deformation region is deformed, so that the endless weakening line is obtained. It is possible to absorb the rupture force, and to disperse the lid opening force and the weakening line rupture force well.

  Further, the spout forming rupture portion includes a vertical wall portion that rises annularly upward from the inside of the endless weakening line, and a top plate portion that covers the top surface of the vertical wall portion, and the vertical portion of the top plate portion By making the vicinity of the connecting portion with the wall the bending deformation region, the bending deformation region can be easily formed. The bending deformation region can be formed to be capable of bending deformation such as a taper shape or a bellows shape, and is preferably formed thinner than the vertical wall portion so as to be easily bent and deformable.

  According to the present invention, the spout opening means includes the delay transmission mechanism for breaking the endless weakening line after releasing the engagement between the cap body and the upper lid when the upper lid is opened. At the time, until the engagement between the upper lid side locking means and the cap main body side locking means formed on the opposite side of the hinge coupling portion is released, the endless weakening line via the coupling mechanism accompanying opening of the upper lid is performed. The tearing force to the endless weakening line acts after the upper lid side locking means and the cap main body side locking means are disengaged. Therefore, according to the present invention, the upper lid opening force and the weakening line breaking force are well dispersed, and the opening of the upper lid and the spout opening can be easily performed with one operation without increasing the opening force. Play.

It is front sectional drawing of the hinge cap which concerns on embodiment of this invention. It is front sectional drawing in the state where the die was cut after completion | finish of shaping | molding of the hinge cap which concerns on embodiment of this invention. It is a top view of the hinge cap in the state of FIG. It is front sectional drawing of the hinge cap in the state with which the container opening | mouth neck part was mounted | worn and the container opening was sealed. FIG. 5 is a front sectional view of the hinge cap showing a state in the middle of opening from the state of FIG. 4 and showing a state immediately after the upper lid side locking means and the cap body side locking means are disengaged. . It is front sectional drawing of the hinge cap in the state in the middle of the opening which further opened the upper cover from the state of FIG. It is front sectional drawing of the hinge cap which shows the state which has finished opening. FIG. 3 is a view corresponding to FIG. 3 of a hinge cap according to another embodiment in which the shape of the endless weakening line and the shape of the spout formation portion for spout and the shape of the welding protrusion are changed in the hinge cap of the embodiment shown in FIG. 1. . It is front sectional drawing of the hinge cap which concerns on other embodiment of this invention. FIG. 10 is a front cross-sectional view of the hinge cap shown in FIG. 9 in a state where the hinge cap has been removed after the molding process. It is a top view of FIG. It is front sectional drawing in the state which mounted | wore the container with the conventional hinge cap.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows an embodiment of a hinge cap 1 according to the present invention, FIG. 2 is a sectional view in the middle of the manufacturing process, shows a state in which the hinge cap is injection-molded and taken out from a mold, and FIG. It is a top view in the state of FIG.
The hinge cap 1 of this embodiment includes a cap body 2 and an upper lid 3, and the upper lid 3 is integrally connected by the cap body 2 and the hinge 4. When the injection molding shown in FIGS. 2 and 3 is finished and the mold is removed, the upper lid 3 is open with respect to the cap body 2.
The hinge cap in this embodiment in this state is composed of a cap body 2 and a cylindrical peripheral wall 11 formed by hanging from the top wall 10 and the outer peripheral portion of the top wall. An inner ring 12 is formed on the inner surface of the top wall 10 so that the container mouth is fitted between the inner wall 12 and the cylindrical peripheral wall 11, and a content liquid dispensing tube 13 is formed on the outer surface side. Further, a circumferential locking projection 21 is formed on the inner peripheral surface of the cylindrical peripheral wall 11 to lock the jaw portion of the container at the time of stoppering. The outer peripheral surface of the top wall 10 has an upper cover when the upper cover is closed. An arcuate cap main body side locking portion 22 that fits and locks with the upper lid side locking portion 34 formed at the end of the skirt wall is formed. An arc-shaped recess 24 is formed in a range up to a position in the vicinity of the locking projection 21 on the lower peripheral surface where the cap body side locking portion 22 of the cylindrical peripheral wall 11 is formed. The finger hook length can be secured without increasing the degree of protrusion from the outer peripheral surface of the cap body 2 of 36. Note that the locking structure of the upper lid side locking portion and the cap body side locking portion can employ conventional fitting locking means for fitting and locking in an undercut uneven relationship. The above structure is the same as that of a conventional hinge cap.

  As a characteristic configuration of the hinge cap according to the present embodiment, the spout portion for spout formation, which is formed on the outer surface side of the top wall 10 of the cap body 2 and is located on the inner side of the spout tube 13 and is formed of a cylindrical body closed at the upper end 15 is protrudingly formed. A base portion of the cylindrical wall 16 of the spout forming rupture portion 15 is integrally connected to the top wall 10 via a weakening line 17 made of an endless thin portion or a score. The hinge cap of the present invention has spout opening means for peeling off the spout formation rupture portion 15 from the top wall when the upper lid is opened, and the spout opening means is used for forming the spout of the cap body. A connecting mechanism for connecting the rupture portion and the top wall inner surface of the upper lid, and the spout forming rupture portion and the top wall inner surface of the upper lid for breaking the endless weakening line after opening the upper lid. A delay transmission mechanism is provided.

  As shown in FIG. 2, the top plate portion 18 of the spout forming rupture portion 15 has a tapered portion 19 that can be bent and deformed by inclining inward from the upper end of the cylindrical wall 16, and a flat portion having a flat inside. It is 20. As will be described later, the top plate portion 18 is arranged so that the taper portion can be easily reversed at the time of opening in order to make the opening easy by shifting the disengagement timing of the upper lid and the breaking line of the weakening line at the time of opening. The tapered portion is preferably formed thinner than the cylindrical wall 16. Therefore, the taper portion forms a bending deformation region as the delay transmission mechanism of the present invention. In order to fulfill the above function, the pulling force is absorbed by reversing the taper portion until the engagement between the upper lid side locking portion 34 and the cap main body side locking portion 22 is released when the upper lid is opened as will be described later. However, it is important that the pulling force does not directly act on the cylindrical wall 16. The spout forming rupture portion 15 is provided eccentrically from the center of the top wall 10 of the cap body 2 toward the finger-hanging piece 36.

  On the other hand, the upper lid 3 includes a top wall 30 and a skirt wall 31 formed to hang from the outer peripheral edge of the top wall, and the inner surface of the top wall 30 is fitted to the inner peripheral surface of the pouring cylinder 13 of the cap body 2. An annular ring 32 for sealing is formed, and a buffering projection 33 is formed in an arc shape on the hinge 4 side outside the annular ring 32. The lower end of the arc-shaped protrusion 33 is formed to have a length that contacts the outer surface of the top wall of the cap body with the upper lid closed or has a slight gap, and a pressing force acts on the upper surface of the upper lid with the upper lid closed. In this embodiment, as will be described later, the upper lid is impacted from the upper part in the state shown in FIG. 1, as will be described later. When this is received, a force is transmitted to the spout forming rupture portion 15 through a welding protrusion 35 to be described later, thereby preventing the weakening line 17 from being inadvertently broken. Therefore, in order to enhance the function, the protrusion 33 is not limited to the range shown in FIG. A finger hooking piece 36 for hooking a finger when opening the cap is formed on the outer peripheral edge of the upper lid opposite to the hinge connecting portion 4 so as to protrude. Further, in the figure, 26 is formed in the middle portion of the wall thickness of the cylindrical peripheral wall on the hinge side so that the cap can be easily separated from the container port when the cap plugged into the container port is discarded after use. This is a vertical circumferential slit, and further longitudinal weakening lines are formed on both sides of the hinge connecting portion 4 of the circumferential slit so that the stopper-type hinge cap can be easily separated from the bottle for easy separation and disposal. A configuration similar to that of the conventional stopper cap can be appropriately employed.

  The inside of the annular ring 32 on the inner peripheral surface of the top wall of the upper lid 3 is welded to the flat portion 20 of the top plate portion 18 of the spout forming rupture portion 15, and the spout forming rupture portion is pulled up when the upper lid is opened. Thus, an annular welding protrusion 35 for breaking the weakening line 17 is formed. The welding protrusion 35 is formed at a position such that the tip of the welding protrusion 35 comes into contact with the inner flat portion of the tapered portion 19 of the top plate portion 18 when the upper lid is closed. Therefore, in this embodiment, the connection mechanism is configured by welding the annular welding protrusion 35 to the flat portion 20 of the spout formation tearing portion. In addition, the welding protrusion 35 is not necessarily circular, and may be at a position in contact with the flat portion 20 of the spout forming tearing portion 15 at least at a position opposite to the hinge.

  The hinge cap 1 composed of the upper lid 3 and the cap body 2 formed as described above is a state shown in FIG. 1 with the upper lid 3 closed from the state shown in FIG. 2 formed by injection molding and die-cut from the mold. Then, by heating the flat portion 20 of the top plate 18 and the vicinity of the lower end of the welding protrusion 35 with heating means such as ultrasonic heating or high frequency induction heating in a state where the jig is applied to the lower surface of the flat portion 20, The flat part 20 of the top plate part 18 of the spout part 15 for spout formation and the lower end of the welding protrusion 35 are welded and integrated. Thereby, the unopened hinge cap 1 shown in FIG. 1 is obtained. When the hinge cap 1 thus obtained is plugged into the mouth-and-neck portion 41 of the container 40, as shown in FIG. 4, the locking projection 21 of the cap body is engaged with the jaw portion 42 of the bottle. The container mouth can be sealed.

Next, the opening operation of the hinge cap according to the first embodiment, which is plugged into the container mouth, will be described with reference to FIGS.
When the upper lid 3 is opened, when a finger is placed on the finger-hanging piece 36 and the lid is opened, at least until the upper-lid-side locking portion 34 on the finger-hanging piece 36 side is disengaged from the cap body-side locking portion 22, As shown in FIG. 3, the taper portion is bent and only the top plate portion 18 is deformed and lifted, and the force for raising the cylindrical wall 16 does not act. Accordingly, at this stage, no force is required to break the weakening wire 17, so that the opening can be performed with almost the same opening force as that of a normal hinge cap. When the lid is further opened from this state, as shown in FIG. 6, the lid opening force further pulls the top plate portion 18 through the welding protrusion 35, so that the taper portion is completely reversed and pulled. The force acts on the cylindrical wall 16 and the breakage of the weakening line starts from the side opposite to the hinge side. By still turning the upper lid in this state, as shown in FIG. 7, the score connecting the spout formation rupture portion 15 and the top wall 10 is completely broken, and the spout 25 is opened.
As described above, according to the present invention, the cap opening force and the score opening force can be separated, and even if the cap can break the upper lid opening and the score in one operation, the opening force can be reduced. It can be easily opened without increasing.

Although one embodiment of the hinge cap according to the present invention has been described above, the present invention is not limited to the above embodiment, and various design changes can be made within the scope of the technical idea. The following embodiment shows an example in which the design of the hinge cap of the above-described embodiment is changed. The same reference numerals are given to the same parts as in the above-described embodiment, detailed description is omitted, and only the improvements are described.
FIG. 8 shows an example in which the base shape (that is, the weakened line shape) of the spout formation tear portion in the above embodiment is changed. In the hinge cap 50 of this embodiment, the spout is formed on the top wall 10 of the cap body 2. By making the shape of the weakened line 51 opposite to the hinge side at an acute angle as shown in the figure, the breakage of the weakened line can be easily started. The shapes of the weakening line and the spout forming portion for spout formation can be changed to other arbitrary shapes, and a shape in which the breaking force is concentrated at one point of the starting position at the start of the breaking that requires the most breaking force is desirable.

  9 to 11 show still another embodiment of the hinge cap according to the present invention, and the hinge cap 60 of the present embodiment is characterized in that a tamper-evident cover 61 for knowing the opening history of the upper lid is provided. . That is, in this embodiment, in order to provide a tamper evidence function that allows the tapping evidence to be easily understood by opening and closing the top cover due to mischief in the distribution stage, when opening the outer peripheral surface of the engaging portion between the top cover 3 and the cap body 2, particularly the top cover. A tamper-evidence cover 61 is provided so as to surround the outer periphery of the finger-hanging piece 36 formed on the upper lid on which the finger is hung. The tamper-evident cover 61 is formed so as to cover the arc-shaped concave portion 24 of the outer peripheral wall, and both side edges thereof are connected to the outer peripheral wall via breakable longitudinal weakening lines 62 and circumferential weakening lines 63, At the time of opening, the upper cover cannot be opened unless at least the weakening line 62 is broken and the cover of the finger-hanging piece 36 by the tamper-evidence cover 61 is released. Therefore, according to the present embodiment, it can be easily understood that the tamper-evident opening has been made by breaking the weakening line connecting the tamper-evident cover 61. The hinge cap described in FIGS. 1 to 8 is not provided with such a tamper-evident cover. In that case, at least the cap body and the upper lid are engaged with each other in a state of being attached to the container as necessary. A tamper-evidence function can be achieved by shrink-wrapping the portion including the portion with a shrink film.

Further, in the above embodiment, the shape of the bending deformation region constituting the delay transmission mechanism of the spout opening means is tapered on the top plate peripheral edge of the spout forming rupture portion, and the inside thereof is inward. Although it is depressed, it is not limited to this and can be formed in a bellows shape. Further, not only the top plate portion but also a bending deformation region can be formed in the middle of the cylindrical wall 16 or in the middle of the welding protrusion 35. In the hinge cap of the present invention, the bending deformation region constituting the delay transmission mechanism shifts the score breaking time for releasing the engagement between the engagement projections of the upper lid and the cap body acting at the time of opening and forming the spout. However, when a pressure such as an impact is applied to the upper lid by providing a bending deformation area that can be bent and deformed in the spout opening means as described above, the bending deformation area is moved downward. By deforming, it can exhibit a buffering action that absorbs an impact, and can also exhibit a function of preventing the weakened line from being inadvertently broken.
Furthermore, in the said embodiment, although the case where it applies only to the stopper cap is shown, naturally application to a screw cap is also possible.

  According to the hinge cap of the present invention, the cap opening force of the upper lid and the breaking force of the weakening line are dispersed in the hinge cap that performs the opening of the upper lid and the breaking of the weakening line forming the spout in one operation. Therefore, the present invention can be applied not only to seasoning containers but also to various containers such as beverage containers, and has high industrial applicability.

DESCRIPTION OF SYMBOLS 1, 50, 60 Hinge cap 2 Cap main body 3 Upper lid 10 Top wall 11 Cylindrical peripheral wall 12 Inner ring 13 Outlet cylinder 15 Outlet formation tearing part 16 Cylindrical wall 17, 51 Endless weakening wire 18 Top plate part 19 Taper Part (bending deformation area)
20 Flat part 21 Locking protrusion 22 Cap body side locking part 24 Arc-shaped recessed part 25 Outlet 26 Vertical slit 30 Top wall 31 Skirt wall 32 Annular ring 33 Projection 34 Upper lid side locking part 35 Welding protrusion 36 Finger hook 40 Container 41 mouth and neck part 42 jaw part 61 tamper evident cover 62 longitudinal direction weakening line 63 circumferential direction weakening line

Claims (3)

It consists of a cap main body attached to the container neck and the upper lid connected to the cap main body by a hinge connecting portion, and the cap main body consists of a ceiling wall and a cylindrical peripheral wall depending from the outer periphery of the ceiling wall, The upper lid is composed of a top wall and a skirt wall depending from the outer peripheral edge of the top wall, and an upper lid side locking portion formed at the end portion of the cylindrical peripheral wall and a cap body protruding upward from the top surface of the top wall The side locking part is engaged,
A hinge having spout opening means for stripping off a spout forming portion for spout formation formed by an endless weakening line on the top wall between the cap body and the top cover from the top wall when the top cover is opened. In the cap,
The spout opening means connects a spout forming portion of the cap main body with the spout forming portion of the cap main body and the top wall inner surface of the upper lid, and the cap main body side member at least opposite to the hinge connecting portion when the upper lid is opened. A hinge cap comprising a delay transmission mechanism for breaking the endless weakening line with a delay from the disengagement between the stop portion and the upper lid side locking portion.   The coupling mechanism is formed by welding a lower end of a welding protrusion formed by hanging from the inner surface of the top wall of the upper lid and an upper surface of the spout formation tearing portion, and the delay transmission mechanism is the endless weakening line. The hinge cap according to claim 1, wherein a bending deformation region capable of bending deformation is formed between a welding position between the spout for forming the spout and the lower end of the welding protrusion piece.   The spout forming rupture portion is composed of a cylindrical wall portion that rises annularly upward from the inside of the endless weakening line, and a top plate portion that covers the top surface of the cylindrical wall portion, and the cylindrical wall of the top plate portion The hinge cap according to claim 2, wherein the vicinity of the connecting portion with the portion is the bending deformation region.

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