JP2013147264A - Cap assembly and assembling method thereof - Google Patents

Abstract

【Task】
The present invention relates to a cap assembly that covers a mouth of a bottle and a method for assembling the cap assembly, and provides an easy-to-handle cap assembly and a method for assembling the cap assembly that prevent misunderstanding when the cap is opened for the first time.
[Solution]
It has an inner plug 40 and a cap 50, receives the lid 421 in the receiving portion 52, and the projection 53 is positioned below the lid 421, and the lid 421 is inside the receiving portion 52 and the shell portion 51. By assembling the inner plug 40 and the cap 50 in a state of being disposed at a position spaced from the inner surface, occurrence of misunderstanding due to a torque change before the inner plug is opened is suppressed.
[Selection] Figure 6

Description

  The present invention relates to a cap assembly that covers a mouth of a bottle and a method for assembling the cap assembly.

  2. Description of the Related Art Conventionally, a container having a configuration in which a mouth of a bottle containing fluid food such as mayonnaise or jam is closed with an inner stopper or a seal and a cap is placed thereon is often used. In the case of this configuration, when removing the contents of the bottle, it is necessary to first remove the cap and then open the pull tab of the inner stopper or peel off the seal. For the elderly, the pull tab may be removed. It has been pointed out that it is difficult to use, such as when the contents of the bottle are attached to the hand when the seal is peeled off, or the surroundings are contaminated by flying around.

  In order to improve this, in recent years, when removing the cap for the first time, the inner plug is unsealed by rotating the cap once in the direction opposite to the removing direction, and then turning the cap in the removing direction. A cap assembly having a structure in which a cap can be removed in an opened state has been proposed (see Patent Documents 1, 2, and 3). According to the proposed cap assembly, it is not necessary to open the inner plug after removing the cap, and the usability is greatly improved.

International Publication No. WO / 2007/126062 JP 2011-225220 A Japanese Patent No. 4581034

  In the case of the proposed cap assembly, when the cap is first opened and turned in the closing direction, which is opposite to the direction in which the cap is removed, the turning becomes heavier and lighter. It is not opened, and it is necessary to turn it further in the closing direction to open the inner plug, and then turn the cap this time in the removal direction.

  However, there are cases where the cap is misunderstood to have been opened when the cap is turned heavier and then lightened, and there is a need to eliminate such a misunderstanding.

  In view of the above circumstances, an object of the present invention is to provide an easy-to-handle cap assembly and an assembling method thereof that prevent the above-described misunderstanding when the cap is opened for the first time.

The cap assembly of the present invention that achieves the above object comprises:
An inner stopper that covers the mouth of the bottle and closes the mouth;
And a cap that covers the mouth of the bottle so as to cover the inner stopper,
The inner plug is
A hollow shape that has an opening at the top and bottom that communicates with the mouth of the bottle, and the lower end of the bottle is inserted into the mouth of the bottle. A main body having a gripping portion for gripping the upper end of the bottle;
A lid that extends above the hollow part so as to cover the hollow part, and a joint part that is joined to the upper edge of the hollow part over the entire circumference and closes the opening of the upper part of the hollow part together with the lid part, It is a part that is integral with the main body, and has a lid that closes the mouth of the bottle together with the main body and receives pressure from above, the joint is destroyed and becomes a separate part from the main body,
The cap is
A shell that opens downward and is formed in a hollow shape, covers the inner stopper, and covers the mouth of the bottle;
A receiving portion that protrudes downward from the inner upper surface of the shell portion and that opens downward, receives the lid portion on the inside and surrounds the edge of the lid portion;
Projecting inwardly from the inner peripheral surface of the receiving part and interfering with the edge of the lid part when the cap and the inner plug are assembled, the receiving part is pushed and spread on the lid part, and when the lid part passes to the upper surface side of the shell part, the receiving part is Returning to its original shape, located below the lid, and having a protrusion that supports the lid even after the joint is destroyed,
In the state in which the cap is received in the receiving portion and the protrusion is positioned below the lid portion, and the lid portion is disposed at a position in the receiving portion and having an interval between the inner surface of the shell portion, It is combined with a stopper.

  In the cap assembly of the present invention, the inner plug and the cap each have the above-described configuration, the cap receives the lid portion in the receiving portion, the projection portion is positioned below the lid portion, and the lid portion is in the receiving portion. Since it is combined with the inner plug in a state where it is arranged at a position between the inner surface of the shell and the inner plug, when opening the inner plug with a cap, it will become heavier and lighter as before There is no behavior that causes misunderstandings to users, and the structure is easy to handle.

  Here, in the cap assembly of the present invention, the inner plug has a screw that spirals around the outer peripheral surface of the hollow portion, and the cap protrudes downward in a cylindrical shape from the inner upper surface of the shell portion to the lower side. It is preferable to have a screwing portion in which a screw that is screwed with the screw is formed on the inner peripheral surface.

  In this configuration, the inner stopper and the cap can be assembled independently of the bottle.

  Or the cap assembly of this invention WHEREIN: The said cap may have a screw | thread screwed together with the screw | thread formed in the bottle in the shell part inner surface.

  In the cap assembly of the present invention, it is preferable that the upper end surface of the hollow portion facing the upper opening and facing upward is a surface having an upward gradient toward the outside.

  In the case of this configuration, when the bottle is tilted and the contents of the bottle are poured and the bottle is erected, the contents are cut off and the contents are prevented from dripping inadvertently.

  The cap assembly method of the present invention is a method of assembling the cap and the cap constituting the cap assembly of the present invention, wherein the cap is put on the cap and the lid portion is the projection portion. Over the upper part of the lid part and the receiving part accepts it until the gap between the lid part and the inner surface of the shell part is relatively narrow, and then the cap is in a state where the projection part is located below the lid part. The distance between the lid part and the inner surface of the shell part is widened by moving it upward relative to the inner plug within the range to be maintained.

  According to this assembling method, the gap between the lid portion of the inner plug and the inner surface of the shell portion of the cap can be surely widened, and even if the cap is inadvertently pressed before opening. A force is not applied to the lid portion of the inner plug, and the inner plug is prevented from being unintentionally opened.

  According to the present invention as described above, when the cap is removed for the first time, it is possible to avoid misunderstanding that the inner plug has been opened even though the inner plug has not been opened yet, and usability is improved.

It is a longitudinal cross-sectional view of the cap assembly of a comparative example. It is the figure which showed the motion at the time of opening by a consumer about the comparative example shown in FIG. It is the figure which showed the motion at the time of opening by a consumer about the comparative example shown in FIG. It is the figure which showed the motion at the time of opening by a consumer about the comparative example shown in FIG. It is the figure which showed the change of the torque when it rotates in the direction which closes a cap once in opening the cap in the comparative example shown in FIGS. 1-4. It is a longitudinal cross-sectional view of the cap assembly of 1st Embodiment of this invention. It is a partial expanded sectional view of the cap which comprises the cap assembly of 1st Embodiment. It is a partial expanded sectional view which shows a part of state with the cap part of the cap assembly of 1st Embodiment received in the receiving part of the cap. It is a partial expanded sectional view which shows a part of edge of the cover part of the cross section which cut | disconnected the cover part horizontally in the state in which the cover part of the inner plug entered the receiving part of the cap. It is explanatory drawing of the assembly method of the cap to an inner stopper in the cap assembly of 1st Embodiment. It is explanatory drawing of the assembly method of the cap to an inner stopper in the cap assembly of 1st Embodiment. It is explanatory drawing of the assembly method of the cap to an inner stopper in the cap assembly of 1st Embodiment. It is explanatory drawing of the assembly method of the cap to an inner stopper in the cap assembly of 1st Embodiment. It is explanatory drawing of the scene which stoppers the cap assembly of 1st Embodiment to a bottle. It is explanatory drawing of the scene which stoppers the cap assembly of 1st Embodiment to a bottle. It is explanatory drawing of the scene which opens a cap for the first time. It is explanatory drawing of the scene which opens a cap for the first time. It is the figure which showed the change of the torque when rotating in the direction which closes a cap once in opening a cap in 1st Embodiment for the first time. It is a longitudinal cross-sectional view of the cap assembly of 2nd Embodiment of this invention. It is explanatory drawing of the scene which opens a cap for the first time in the cap assembly of 2nd Embodiment. It is explanatory drawing of the scene which opens a cap for the first time in the cap assembly of 2nd Embodiment.

  Hereinafter, a comparative example compared with the present invention will be described first, and then an embodiment of the present invention will be described.

  FIG. 1 is a longitudinal sectional view of a cap assembly of a comparative example.

  A cap assembly 1 </ b> A of a comparative example shown in FIG. 1 includes an inner plug 10 and a cap 20.

  The inner stopper 10 is a component that covers the mouth 31 of the bottle 30 and closes the mouth 31. The cap 20 is a component that covers the mouth 31 of the bottle 30 from above the inner stopper 10 so as to cover the inner stopper 10.

  FIG. 1 shows a state in which the inner stopper 20 is already plugged into the mouth 31 of the bottle 30 and the cap 20 is put on the inner stopper 10 and is in an intended positional relationship with respect to the inner stopper 10. Yes.

  The inner plug 10 includes a main body 11 and a lid body 12.

  The main body 11 has a hollow portion 111 and a sandwiching portion 112. Among these, the hollow part 111 has a hollow shape that communicates with the mouth 31 of the bottle 30 and has an opening at the top and bottom, and the lower end part 111 a is inserted into the mouth 31 of the bottle 30.

  Moreover, the insertion part 112 which comprises the main body 11 receives the insertion of the upper end part 32 of the bottle 30 in cooperation with the lower end part 111a inserted in the opening | mouth 31 of the bottle 30 of the hollow part 111, and the upper end of the bottle 30 It plays the role of grabbing the part 32. A rib 112a protruding inward is formed in the pinching portion 112, and when the rib 112a enters into the concave portion 33 of the bottle 30, the pinching portion 112 firmly holds the upper end portion 32 of the bottle 30. It has a structure that does not come out of the 30 mouths 31.

  Further, the lid body 12 constituting the inner plug 10 has a lid portion 121 and a joint portion 122. Among these, the cover part 121 is a part which spreads in plate shape above the hollow part 111 so that the hollow part 111 may be covered. Further, the joint portion 122 is joined to the upper end edge 111 b of the hollow portion 111 over the entire circumference, and closes the opening at the upper end of the hollow portion 111 together with the lid portion 121. The main body 11 and the lid body 12 constituting the inner plug 10 are one part integrally molded. However, the joint portion 122 is easily broken when the lid portion 121 is pushed from above, and the joint portion 122 is formed. Is broken, the lid 12 becomes a separate part from the main body 11. This point will be described later.

  In order to ensure a safety margin so that the joint portion 122 is not inadvertently destroyed, a recess 121a is formed on the upper surface of the lid portion 121 so that the lid portion 121 is separated from the upper surface of the cap 20. Even if a force is applied to the upper surface and the upper surface is recessed, the force does not reach the lid 121.

  Further, the cap 20 constituting the cap assembly 1 </ b> A of the comparative example has a shell portion 21, a receiving portion 22, and a protruding portion 23.

  The shell portion 21 is a portion that opens downward and is hollow, covers the inner stopper 10, and covers the mouth 31 of the bottle 30 from above the inner stopper 10. On the inner peripheral surface of the shell portion 21, a female screw 211 is formed which is screwed with a male screw 34 provided on the bottle 30. The cap 20 is attached and detached by turning.

  In addition, the receiving portion 22 is a portion that protrudes downward from the inner upper surface of the shell portion 21 and opens at the lower portion, and receives the lid portion 121 of the main body 11 inside thereof and surrounds the edge 121 b of the lid portion 121.

  Further, the protruding portion 23 is a portion having a rib shape protruding inward from the inner peripheral surface of the receiving portion 22. As will be described later, the protrusion 23 protrudes to a position where it interferes with the edge 121b of the lid 121.

  In order to attach the cap assembly 1 </ b> A having the structure shown in FIG. 1 to the bottle 30, after filling the bottle 30 with the contents, the bottle 30 is interposed between the lower end portion of the hollow portion 11 of the inner plug 10 and the filling portion 112. The upper end 32 of the That is, the inner stopper 10 is plugged into the bottle 30. After the plugging, the cap 20 is put on and rotated, and the cap is attached so that the protrusion 23 of the cap 20 is positioned just above the lid 121 of the inner plug 20 as shown in FIG. Thereafter, shrink wrapping or the like is performed, and the cap 20 is not inadvertently rotated from the position shown in FIG.

  2 to 4 are diagrams showing movements at the time of opening by the consumer in the comparative example shown in FIG.

  After reaching the consumer's hand in the state shown in FIG. 1, when the consumer tries to open the cap for the first time, first the shrink wrap is removed, and then the cap 20 is further rotated in the closing direction. Then, the cap 20 moves in the direction indicated by the arrow A in FIG. 2, and the edge 121b of the lid portion 121 of the inner plug 10 interferes with the protrusion 23 of the cap 20 to elastically expand the receiving portion 22 while As shown in FIG. 2, the portion 121 moves above the protruding portion 23. Then, the interference between the edge 121b of the lid 121 and the protrusion 23 of the cap 20 is released, the receiving part 22 returns to its original shape, and the protrusion 23 of the cap 20 goes under the edge 121b of the lid 121.

  When the cap 20 is further rotated in the closing direction to further move the cap 20 in the direction of arrow A, the cap 20 pushes the lid 121 and the joint 122 is broken as shown in FIG. When the cap 20 is turned in the closing direction and the state shown in FIG. 3 is reached, the cap 20 does not turn in the closing direction, and this time, the cap 20 is turned in the opening direction. Then, as shown in FIG. 4, only the lid 12 of the inner plug 10 is detached from the bottle 30 together with the cap 20 while leaving the main body 11 and entering the receiving portion 22 of the cap 20. Since the cap 20 is formed with the projection 23, the lid 20 remains in the receiving portion 22 of the cap 20 from this time on.

  In the case of these comparative examples shown in FIGS. 1 to 4, when the cap 20 is opened for the first time, the inner plug 10 can be opened by rotating the cap 20 in the direction of once closing, and the inner plug is opened after the cap is opened. The act of opening is unnecessary, and usability is greatly improved.

  FIG. 5 is a diagram showing a change in torque when the cap 20 is first rotated in the closing direction when the cap 20 is opened for the first time in the comparative example shown in FIGS.

  When the shrink wrap is removed and the cap 20 is turned in the closing direction, the cap 20 moves in the direction indicated by the arrow A in FIG. 2, and the edge 121b of the lid 121 of the inner plug 10 interferes with the protrusion 23 of the cap 20. Push out the receiving part. At this time, the force (torque) for turning the cap 20 increases as shown in the region a of FIG. When the cap 20 is further rotated in the closing direction, the lid 121 moves above the protrusion 23 and the torque temporarily decreases (region b). When the cap is further rotated in the closing direction, this time, when the cap 20 pushes the lid 121 and further rotates in the closing direction, the joint 122 is broken while increasing the torque (region c). Thereafter, the cap 20 does not turn in the closing direction, and this time, the cap 20 is removed by turning the cap 20 in the opening direction.

  Here, as can be seen from FIG. 5, in the case of the cap assembly 1A of the comparative example described above, when the cap 20 is rotated in the closing direction to open the inner plug 10, the cap 20 hits the lid portion 121 of the inner plug. There is a torque peak P before. For this reason, a consumer who is not accustomed to handling the bottle with the cap assembly 1A mistakenly thinks that the inner plug 10 has been opened by passing the torque peak P, and opens the cap 20 at that time. When the cap 20 is opened, the inner plug 10 is not opened. Even if the cap 20 is opened and the inside plug 10 is not opened, a consumer who is not accustomed does not notice that the inside plug 10 does not open unless it goes to the area c, and it becomes a complaint as a defective product. There is also a fear.

  Based on the above description of the comparative example, an embodiment of the present invention will be described next.

  FIG. 6 is a longitudinal sectional view of the cap assembly according to the first embodiment of the present invention.

  The cap assembly 1 </ b> B of the first embodiment shown in FIG. 6 includes an inner plug 40 and a cap 50.

  The inner stopper 40 is a component that covers the mouth 61 of the bottle 60 and closes the mouth 61 (see FIG. 14). The cap 50 is a component that covers the mouth plug 61 of the bottle 60 from above the inner plug 40 so as to cover the inner plug 40.

  The inner plug 40 includes a main body 41 and a lid body 42.

  The main body 41 has a hollow portion 411 and a sandwiching portion 412. Among these, the hollow part 411 has a hollow shape having an upper and lower opening communicating with the mouth 61 of the bottle 60, and the lower end part 411a thereof is inserted into the mouth 61 (see FIG. 15) of the bottle 60 at the time of stoppering.

  Further, the hollow portion 411 is formed with a male screw 411c on the outer peripheral surface thereof and screwed with the female screw 541 of the cap 50, which spirals around the outer peripheral surface.

  Further, the insertion portion 412 constituting the main body 41 receives the insertion of the upper end portion 62 of the bottle 60 in cooperation with the lower end portion 411 a inserted into the mouth 61 of the bottle 60 of the hollow portion 411 and receives the upper end of the bottle 60. It plays the role of grabbing the part 62. A rib 412a is formed in the pinching portion 412, and when the rib 412a enters the concave portion 63 (see FIG. 14) of the bottle 60, the pinching portion 412 firmly holds the upper end portion 62 of the bottle 60. It has a structure that does not come out of 60 mouths 61.

  Further, the lid body 42 constituting the inner plug 40 has a lid portion 421 and a joint portion 422. Among these, the cover part 421 is a part which spreads in plate shape above the hollow part 411 so that the hollow part 411 may be covered. The joint portion 422 is joined to the upper end edge 411b of the hollow portion 411 over the entire circumference, and closes the opening at the upper end of the hollow portion 411 together with the lid portion 421. The main body 41 and the lid body 42 constituting the inner plug 40 are one piece integrally molded, but the joint portion 422 is considerably easily broken when the lid portion 421 is pushed from above. When the joint portion 422 is destroyed, the lid body 42 becomes a separate part from the main body 41.

  In order to ensure as much safety margin as possible so that the joint portion 422 is not inadvertently destroyed, a recess 421a is formed on the upper surface of the lid portion 421 so as to be separated from the upper surface of the cap 50 as much as possible. It is devised so that the force does not reach the lid portion 421 even if the force is applied and the upper surface is recessed.

  The cap 50 includes a shell portion 51, a receiving portion 52, a projection portion 53, a screwing portion 54, and a hook 55 (see FIG. 7) shown in FIG.

  The shell 51 is a portion that opens downward and is hollow, covers the inner stopper 40, and covers the mouth 61 (see FIG. 15) of the bottle 60 from above the inner stopper 40.

  In addition, the receiving portion 52 is a portion that protrudes downward from the inner upper surface of the shell portion 51 and opens at the lower portion, and receives the lid portion 421 of the main body 41 on the inside thereof and surrounds the edge 421b of the lid portion 421.

  Further, the protruding portion 53 is a portion having a rib shape protruding inward from the inner peripheral surface of the receiving portion 52. The protruding portion 53 protrudes to a position where it interferes with the edge 421b of the lid portion 421 when the cap 50 and the inner plug 40 are assembled.

  Further, the screwing portion 54 has a shape that projects downward from the inner upper surface of the shell portion 51 in a cylindrical shape and opens downward. On the inner peripheral surface of the screwing portion 54, a female screw 541 is formed which is screwed with a male screw 411c formed on the outer peripheral surface of the hollow portion 411 of the inner plug 40. That is, in the comparative example described above, the cap 20 is opened and closed with respect to the bottle 30, but in the case of the cap assembly 1B of the first embodiment, the cap 50 is directly opened and closed with respect to the inner plug 40. It has become.

  FIG. 7 is a partially enlarged cross-sectional view of a cap constituting the cap assembly 1B of the first embodiment shown in FIG.

  8 is a partially enlarged cross-sectional view showing a part of the cap assembly 1B of the first embodiment shown in FIG. 6 in a state where the lid portion 42 of the inner plug 40 is received by the receiving portion 52 of the cap 50. As shown in FIG.

  In the case of the cap assembly 1B of the first embodiment, as shown in FIGS. 6 and 8, the lid portion 421 of the inner plug 40 enters the space above the projection 53 of the receiving portion 52 of the cap 50. It is out. However, there is a space between the upper inner surface of the shell portion 51 and the lid portion 422 so that a force is applied to the shell portion 51 from above and the force is not applied to the lid portion 421 even if the shell portion 51 is slightly recessed. Is formed.

  Further, as shown in FIG. 7, a hook 55 protruding inward is formed at a portion inside the receiving portion 50 of the cap 50 and immediately above the protruding portion 53. The hooks 55 are formed at a plurality of locations at intervals in the circumferential direction.

  FIG. 9 is a partially enlarged cross-sectional view showing a part of the edge 421b of the lid portion 421 having a cross section obtained by horizontally cutting the lid portion 421 in a state in which the lid portion of the inner plug enters the receiving portion of the cap.

  As shown in FIG. 9, the circumferential surface 421c of the lid portion 421 of the inner plug 40 has a number of rotation projections 421d formed over the circumference in the circumferential direction. The anti-rotation protrusion 421d meshes with the hook 55 to prevent the positional relationship between the cap 50 and the inner plug 40 from deviating from the intended relationship.

  10-13 is explanatory drawing of the assembly method of the cap to an inside plug in the cap assembly of 1st Embodiment demonstrated with reference to FIGS. 6-9.

  First, as shown in FIG. 10, the inner plug 40 is placed on a jig 70 that matches the shape of the inner plug 40. A rib 411 e is formed on the inner peripheral surface of the hollow portion 411 of the inner plug 40, and the rib 411 e is fitted into a recess (not shown) of the jig 70 and is prevented from rotating.

  Next, the cap 50 is put on as shown in FIG. 11, and while the cap 50 is fixed, the jig 70 is raised in the arrow U direction while rotating in the arrow R1 direction as shown in FIG. Since the inner plug 40 is prevented from rotating with respect to the jig 70, the inner plug 40 also rotates together with the jig 70, and the male screw 411 c of the inner plug 40 is screwed with the female screw 541 of the screwing portion 54 of the cap 50. Then, the edge 421b of the lid portion 421 of the inner plug 40 interferes with the protrusion 53 (see FIG. 7) formed on the inner peripheral surface of the receiving portion 52 of the cap 50, and the receiving portion 52 is received by the lid portion 421 of the inner plug 40. When the cover 421 passes over the projection 53 and passes over the upper surface of the shell 51, the receiving part 52 returns to its original shape. As a result, the protrusion 53 is positioned below the lid 421, supports the lid 421 even after the joint 422 is destroyed as described later, and places the lid 421 inside the receiving portion 52. It plays a role to keep.

  When the lid portion 421 rides on the projection portion 53, the receiving portion 52 is pushed and widened to increase the torque for rotating the jig 70, and when the lid portion 421 exceeds the projection portion 53, the torque suddenly decreases. Therefore, by monitoring this torque, it is possible to detect that the lid 421 has exceeded the protrusion 53. Alternatively, instead of monitoring the torque, it may be detected that the lid 421 has exceeded the protrusion 53 by the rotation angle of the jig 70 in the direction of arrow R1 or the amount of movement in the direction of arrow U.

  Here, simply turning the jig 70 and the inner plug 40 in the direction of the arrow R 1 shown in FIG. 12 makes it difficult to stop the lid 421 at a position directly above the projection 53, and the lid 421 is inside the receiving portion 52. It ’s going too far up.

  Then, next, as shown in FIG. 13, this time, the jig 70 is lowered in the direction of the arrow D while rotating the jig 70 in the direction of the arrow R <b> 2, and the lid 421 is positioned immediately above the protrusion 53. Since the torque for rotating the jig 70 starts to rise when the lid portion 421 hits the projection portion 53, it is possible to detect that the lid portion 421 has been lowered to just above the projection portion 53 by monitoring the torque. . Alternatively, it may be detected that the lid 421 has reached just above the protrusion 53 by the rotation angle of the jig 70 in the direction of the arrow R2 or the amount of descending in the direction of the arrow D.

  In the cap assembly 1 </ b> B of the first embodiment, through such an assembling process, the lid portion 421 is received in the receiving portion 52, the protruding portion 53 is positioned below the lid portion 421, and the lid portion 421 is received in the receiving portion 52. The cap 50 and the inner plug 40 are combined in a state in which the cap 50 and the inner surface of the shell portion 51 are disposed at a position having a space therebetween.

  Here, in a state where the lid 421 is directly above the projection 53, the rotation projection 421d is engaged with the hook 55 as shown in FIG. The positional relationship is maintained without rotating.

  As shown in FIGS. 7 and 8, the hook 55 for stopping rotation is provided only at a portion immediately above the protrusion 53, and is not provided further above the receiving portion 52. This is because, after the cap 50 is opened with the lid 42 of the inner plug 40 over the hands of the consumer, the cap 50 is closed when the cap protrusion 421d remains engaged with the hook 55 when the cap 50 is closed again. When the cap 50 is closed again, the lid 421 moves to the upper portion where the hook 55 is not provided, and the cap 50 can be closed with a light force.

  Here, an example in which the jig 70 and the inner plug 40 are rotated or moved up and down has been described, but a jig (not shown) that holds the cap 50 may be rotated or moved up and down while the inner plug 40 is fixed. .

  Thus, in the cap assembly 1B of the first embodiment, the inner plug 40 and the cap 50 are assembled before the bottle is plugged. That is, the cap assembly 1B can be performed by the manufacturer of the cap assembly 1B. The assembly of the inner plug 40 and the cap 50 needs to be performed under a highly accurate control. The fact that this assembly can be performed by the manufacturer of the cap assembly 1B does not impose a burden on the equipment on the side of the food manufacturer that fills the bottle 30 with the contents and plugs the bottle 30. Thus, the first embodiment is a preferred embodiment also in this respect.

  Next, a scene where the cap assembly is plugged into a bottle will be described.

  FIG. 14 and FIG. 15 are explanatory views of a scene where the cap assembly of the first embodiment is plugged into a bottle.

  The bottle 60 is filled with the contents, and the cap assembly 1B is placed, for example, on a flat plate 80 on the top as shown in FIG. 14 with the inner plug 40 and the cap 50 being combined. Press down. Then, as shown in FIG. 15, the upper end portion 62 of the bottle 60 enters between the lower end portion 411a of the hollow portion 41 of the inner plug 40 and the insertion portion 412, and the rib 412a formed in the insertion portion 412 is a bottle. The inner stopper 40 is firmly fixed to the mouth 61 of the bottle 60.

  After the cap assembly 1B is plugged into the bottle 60, shrink wrapping is performed.

  16 and 17 are explanatory diagrams of a scene where the cap is opened for the first time.

  It will be passed to the consumer in the state shown in FIG.

  After opening the shrink wrap, the consumer turns the cap 50 in the closing direction. Then, as shown in FIG. 16, the cap 50 pushes down the lid portion 42 of the inner plug 40, thereby breaking the joint portion 421 b. Thereafter, when the cap 50 is rotated in the opening direction, the cap 50 is removed while the lid portion 421 of the inner plug 40 is held in the receiving portion 52 of the cap 50 as shown in FIG. At that time, the mouth of the inner plug 40 is already open.

  Note that the upper end surface 411d of the inner plug 40 facing upward and surrounding the upper opening is formed as a surface having an upward gradient as shown in FIG. The upper end surface 411d of the climbing slope has an effect of improving the content of the bottle and preventing the contents from dripping inadvertently when the bottle 60 is tilted and the contents are poured to stand the bottle 60. .

  FIG. 18 is a diagram showing a change in torque when the cap 50 is rotated in the direction of closing once when the cap 50 is opened for the first time in the first embodiment shown in FIGS. 6 to 17. FIG. 18 is a diagram to be compared with FIG. 5 in the above-described comparative example.

  In the case of the cap assembly 1B of the first embodiment, the torque peak P shown in FIG. 5 passes when the inner plug 40 and the cap 50 are assembled, and when the inner plug 40 and the cap 50 are assembled, the inner plug 40 is assembled. The lid portion 421 is in the receiving portion 52 of the cap 50 and on the upper surface side of the cap 50 with respect to the protruding portion 53. Therefore, when the cap 50 is opened for the first time, the torque peak P shown in FIG. 5 does not appear, and the force (torque) for turning the cap 50 increases when the cap 50 pushes the lid 421. For this reason, a consumer who is opening the inner plug 40 and removing the cap 50 will not be mistaken for the inner plug 40 being opened. Realize.

  Next, a cap assembly according to a second embodiment of the present invention will be described. Since the cap assembly of the second embodiment is easy to understand when compared with the above-described comparative example, the elements corresponding to the respective elements of the cap assembly 1A of the comparative example have a comparative example even if there are some differences in shape and the like. The same reference numerals as those in the drawings (FIGS. 1 to 4) of the cap assembly 1A are attached and shown, and only differences will be described.

  FIG. 19 is a longitudinal sectional view of a cap assembly according to a second embodiment of the present invention.

  In the cap assembly 1 </ b> C according to the second embodiment, the cap 20 receives the lid 121 in the receiving portion 22, the projection 23 is positioned below the lid 121, and the lid 121 is located inside the receiving portion 22. The inner plug 10 is combined with the inner surface of the shell portion 21 in a state of being spaced from the inner surface of the shell portion 21.

  In order to realize this, in the case of the cap assembly 1C of the second embodiment shown in FIG. 19, even if the lid 121 is received above the protrusion 23 in the receiving portion 22, the lid 121 and the shell 21 The dimensions of the receiving portion 22 are determined so that a sufficiently wide interval is ensured between them.

  In the cap assembly 1C of the second embodiment, in order to assemble the inner stopper 10 and the cap 20, as in the comparative example, after filling the bottle 30 with the contents and plugging the inner stopper 10, the cap 20 is removed. The procedure is to install. When attaching the cap 20 to the plug 10 that has been plugged, an actual bottle 30 is used instead of the jig 70 shown in FIGS. 10 to 13, and the assembling method described with reference to FIGS. 10 to 13 That is, the lid 121 is moved to the upper surface side of the shell 21 over the projection 23 in the receiving portion 22, and then the cap 20 is rotated in the reverse direction so that the lid 121 is immediately placed on the projection 23. An assembling method of positioning on the top is adopted.

  When the cap assembly 1 </ b> C is assembled as shown in FIG. 19, shrink packaging is performed together with the bottle 30, whereby the cap 20 cannot rotate and the position is fixed with respect to the inner plug 10.

  20 and 21 are explanatory views of a scene where the cap is opened for the first time in the cap assembly 1C of the second embodiment.

  In the consumer's hand, it will cross in the state shown in FIG.

  After opening the shrink wrap, the consumer turns the cap 20 in the closing direction. Then, as shown in FIG. 20, the cap 20 pushes down the lid portion 12 of the inner plug 10, thereby breaking the joint portion 121 b. Thereafter, when the cap 20 is rotated in the opening direction, the cap 20 is removed while the lid portion 121 of the inner plug 10 is held in the receiving portion 22 of the cap 20 as shown in FIG. At that time, the mouth of the inner plug 10 is already open.

  In the case of the cap assembly 1C of the second embodiment, as in the case of the cap assembly 1B of the first embodiment, the torque peak P shown in FIG. In a state in which the inner plug 10 and the cap 20 are assembled, the lid portion 121 of the inner plug 10 is in the receiving portion 22 of the cap 20 and on the upper surface side of the cap 20 with respect to the protruding portion 23. Therefore, when the cap 20 is opened for the first time, the torque peak P shown in FIG. 5 does not appear, and the force (torque) for turning the cap 20 increases when the cap 20 presses the lid 121. For this reason, there is no possibility that the consumer who opens the inner plug 10 and removes the cap 20 will misunderstand that the inner plug 10 is opened. Realize.

1A, 1B, 1C Cap assembly 10, 40 Inner plug 11, 41 Main body 12, 42 Lid body 20, 50 Cap 21, 51 Shell portion 22, 52 Receiving portion 23, 53 Protruding portion 30, 60 Bottle 31, 61 Port 32 , 62 Upper end portion 34, 411c Male thread 112a, 412a, 411e Rib 54 Threaded portion 55 Hook 63 Recess 70 Jig 80 Plate 111, 411 Hollow portion 112, 412 Insertion portion 111a, 411a Lower end portion 111b, 411b Upper end edge 121, 421 Lid 121b, 421b Edge 122, 422 Joint 121a, 421a Depression 411d Upper end surface 421b Joint 421c Peripheral surface 421d Anti-rotation protrusion 541 Female thread

Claims (5)

An inner stopper that covers the mouth of the bottle and closes the mouth;
A cap that covers the mouth of the bottle so as to cover the inner stopper;
The inner plug is
A hollow portion communicating with the mouth of the bottle and having an upper and lower opening, and a lower portion inserted into the mouth of the bottle, and an insertion of the upper end portion of the bottle together with the lower end portion of the hollow portion And a main body having a grip portion for gripping the upper end portion,
A lid portion that extends above the hollow portion so as to cover the hollow portion, and a joint portion that is joined to the upper edge of the hollow portion over the circumference and closes the opening of the upper end of the hollow portion together with the lid portion. And a lid that is a part integral with the main body, closes the mouth of the bottle together with the main body, receives the pressure from above, destroys the joint portion, and is a separate part from the main body,
The cap is
A shell that opens downward and is hollow and covers the inner plug and covers the mouth of the bottle;
A receiving portion that protrudes downward from the inner upper surface of the shell and opens downward, receives the lid on the inside and surrounds the edge of the lid;
Projecting inwardly from the inner peripheral surface of the receiving portion and interfering with the edge of the lid portion when assembling the cap and the inner plug, the lid portion is pushed and spread out on the lid portion, and the lid portion is an upper surface of the shell portion And the projecting portion that supports the lid portion even after the joint portion is destroyed, the receiving portion is returned to the original shape when passing to the side and is positioned below the lid portion.
The cap receives the lid portion in the receiving portion, and the projection portion is positioned below the lid portion, and the lid portion is in the receiving portion and has a space between the inner surface of the shell portion. The cap assembly is combined with the inner plug in a state where the cap is disposed. The inner plug has a screw that spirals around the outer peripheral surface of the hollow portion,
The cap has a threaded portion that protrudes downward in a cylindrical shape from the inner upper surface of the shell, opens downward, and has an inner peripheral surface with a screw that is screwed with the screw. The cap assembly according to claim 1.   The cap assembly according to claim 1, wherein the cap has a screw that is screwed into a screw formed on the bottle on the inner surface of the shell.   4. The cap assembly according to claim 1, wherein an upper end surface of the hollow portion facing the upper opening and facing upward is a surface having an upward slope toward the outside. 5. An inner stopper that covers the mouth of the bottle and closes the mouth;
A cap that covers the mouth of the bottle so as to cover the inner stopper;
The inner plug is
A hollow portion communicating with the mouth of the bottle, having a top and bottom opening and having a lower end inserted into the mouth of the bottle, and jointing the lower end of the hollow portion, inserting the upper end of the bottle And a main body having a grip portion for gripping the upper end portion,
A lid portion that extends above the hollow portion so as to cover the hollow portion, and a joint portion that is joined to the upper edge of the hollow portion over the circumference and closes the opening of the upper end of the hollow portion together with the lid portion. And a lid that is a part integral with the main body, closes the mouth of the bottle together with the main body, receives the pressure from above, destroys the joint portion, and is a separate part from the main body,
The cap is
A shell that opens downward and is hollow and covers the inner plug and covers the mouth of the bottle;
A receiving part surrounding the edge of the lid part by projecting in a cylindrical shape downward from the inner upper surface of the shell part and opening the lower part;
The cap protrudes inward from the inner peripheral surface of the receiving portion and interferes with an edge of the lid portion when the cap is crowned on the inner plug so that the receiving portion is pushed and spread on the lid portion. When it passes through the upper surface side, the receiving part is returned to its original shape and is located below the lid part, and has a projection part that supports the lid part even after destruction of the joint part,
A method of assembling the cap and the cap of a cap assembly,
The cap is put on the inner plug, and the lid portion is positioned below the lid portion with the protruding portion exceeding the lid portion, so that the distance between the lid portion and the inner surface of the shell portion is relatively narrow. To the receiving part to the position,
The cap is moved upward relative to the inner plug within a range in which the protruding portion is kept below the lid portion, and the gap between the lid portion and the inner surface of the shell portion is increased. A method for assembling a cap assembly, characterized by spreading.

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