JP6460764B2 - cap - Google Patents

Description

  The present invention relates to a cap, and more particularly to a cap that does not use a pull ring as an opening means.

  Conventionally, in order to ensure the sealing performance of the container, a cap composed of an upper lid and an inner stopper is attached to the container mouth. The communicating portion between the inner plug and the container is initially closed by a planned opening section partitioned by the weakening section, and the weakening section is pulled by pulling a pull ring or the like standing on the planned opening section. The container was opened by breaking and removing the planned opening. However, the operation of removing the planned opening portion by pulling a pull ring is not only troublesome, but is usually performed with one finger, and is relatively difficult for a person with weak power.

  Therefore, in recent years, development of a cap that does not use a pull ring or the like for opening has been demanded. An example of such a cap is a cap described in Patent Document 1.

International Publication No. 2007/126062

  However, the cap described in Patent Document 1 has a problem that when an impact is applied from the outside, there is a risk that the weakened portion that holds the planned opening portion is cut and the contents leak. It was. Moreover, when opening, it is necessary to rotate the upper lid in the direction of closing the cover integrally, to break the weakened portion, screw the planned opening to the upper lid, and then rotate the upper lid in the direction of opening again. However, there was a problem that the opening operation was troublesome. And customers who are accustomed to general caps first turn the upper lid in the direction of opening the lid, often notice that the opening operation is different after removing the upper lid, and often redo the opening operation again, This further promotes the troublesomeness of the opening operation.

  Therefore, an object of the present invention is to provide a cap that can be opened only by rotating the upper lid in the opening direction.

The present invention includes an upper lid and an inner plug on which the upper lid can be screwed. The inner plug has a cylindrical outlet tube, and the outlet tube is guided to the outer peripheral surface of the distal end portion thereof. A surface is formed and has a planned opening portion connected to the leading end portion via a weakened portion continuous with the guide surface, and the upper lid is provided on the top wall and the inner surface of the top wall. The middle foot has a base portion and an end portion, and a bendable portion is provided between the base portion and the end portion, and the end portion is inward of the base portion. A cap that can be hooked to the planned opening portion and is reversibly provided by the bendable portion, and when the upper lid is screwed to the inner plug, the end portion is attached to the guide surface. When the upper cover and the inner plug are first released from contact with each other, the end portion moves along the guide surface and is hooked on the planned opening portion. Weakening portions if disengaging the parts is a cap, characterized in that the fracture.

  In the present invention, a holding portion is provided on the top wall inward of the middle leg of the upper lid, and the holding portion can be held so that the planned opening portion does not fall after the breaking portion is broken. It is also possible. Further, in the present invention, the inner plug further includes a dispensing tube, and the middle foot can be brought into contact with the dispensing tube when the upper lid is screwed to the middle plug. Is possible.

  In the present invention, in particular, the upper lid is provided with the middle foot, and the middle foot is configured as described above. Therefore, the weakened portion can be broken and the cap can be opened simply by rotating the upper lid in the opening direction. Is possible.

It is a top view which shows 1st Embodiment of this invention. It is II-II sectional drawing of FIG. FIG. 3 is a three-dimensional view corresponding to an enlarged view taken along arrow III-III in which the inner plug of FIG. 2 is omitted. FIG. 3 is an enlarged schematic view of a main part of FIG. 2. (A) is a state before opening, (B) is a state immediately before opening, (C) is a view showing a state after opening. It is a figure which shows 2nd Embodiment of this invention, and is a figure corresponding to FIG. FIG. 6 is an enlarged schematic view of a main part of FIG. 5. It is a figure which shows 3rd Embodiment of this invention, and is a figure corresponding to FIG.

  A first embodiment of the present invention will be described with reference to FIGS. First, the configuration of the present embodiment will be described with reference to FIGS. 1 to 3. The cap 1 includes an upper lid 2 and an inner plug 3 on which the upper lid 2 can be screwed.

  The inner plug 3 has a top wall 4, a screwed cylinder 5, an outer cylinder 6, and an outlet cylinder 7. The screw cylinder 5 is provided so as to hang down from the outer peripheral edge of the top wall 4, and has a thread 8 on its outer peripheral surface. Further, the lower end of the screwing cylinder 5 is continuous with the inner cylinder 9.

  The outer cylinder 6 is continuously provided so as to protrude outward from the lower end of the threaded cylinder 5, and is fitted with a mouth of a container (not shown) to which the cap 1 is attached together with the inner cylinder 9. It is provided so as to form the landing groove 10. Further, a recess 10 is formed at the top of the outer cylinder 6.

  The outlet cylinder 7 has a scheduled opening 13 and is formed in a cylindrical shape, and also serves as a dispensing cylinder in the present embodiment. The outlet cylinder 7 is provided so as to stand upright from the inner peripheral edge of the top wall 4. A guide surface 11 is formed on the outer peripheral surface of the distal end portion 7 a of the outlet cylinder 7, and a planned opening portion 13 is connected via a weakened portion 12 continuous with the guide surface 11.

  The scheduled opening portion 13 is formed so as to close the distal end portion 7a of the outlet tube 7, and is provided to ensure the initial sealing performance of the container to which the cap 1 is attached. The scheduled opening 13 has a closing plate 14 for closing the outlet tube 7 and an engaging tube 15. In the present embodiment, the closing plate 14 is formed so as to be located inward of the engagement cylinder 15. The outer peripheral surface of the engagement cylinder 15, particularly the upper outer peripheral surface, is a circular arc surface 16. The lower end of the engagement tube 15 is continuous with the weakened portion 12 and is connected to the outlet tube 7 via the weakened portion 12.

  The upper lid 2 has a top wall 17, a skirt wall 18, and an opening band 19. The skirt wall 18 is formed so as to hang down from the outer peripheral edge of the top wall 17, and the opening band 19 is formed so as to be continuous with the lower end of the skirt wall 18 via the weakening line. The opening band 19 is provided in order to prevent the screwing of the upper lid 2 and the inner plug 3 from being unexpectedly released due to an impact such as mischief or dropping of the container, and the opening band 19 is removed at the time of opening. For this purpose, a grip portion 19a to be gripped is formed.

  The skirt wall 18 has a main cylinder part 18a and a peripheral cylinder part 18b provided so as to protrude outward from the lower end of the main cylinder part 18a. On the inner peripheral surface of the main cylinder part 18a, A thread 20 is formed so as to be able to be screwed with the thread 8 of the threaded cylinder 5 and for screwing the upper lid 2 to the inner plug 3. Further, a ridge 21 is formed at the lower end of the main tube portion 18a. When the upper lid 2 is screwed to the inner plug 3, the convex strip 21 is fitted to the concave strip 10 of the inner plug 3, so that the upper lid 2 does not fall further, that is, the fitting position of the upper lid 2. It is for prescribing.

  A middle leg 22 is suspended from the inner surface of the top wall 17, and is formed on the top wall 17 inward of the middle leg 22 so as to be able to engage with the engagement cylinder 15 of the planned opening portion 13. A holding cylinder 23 is suspended. The holding cylinder 23 is formed so as to be engageable with the engagement cylinder 15 of the planned opening portion 13 when the upper lid 2 is first detached from the inner plug 3, and the planned opening portion 13 is held in the upper lid 2 after opening. , Provided as a holding portion for preventing the fall.

  The middle foot 22 is formed in a substantially cylindrical shape and has a base portion 22a and an end portion 22b. The base portion 22a and the end portion 22b are continuous via the bendable portion 22c. The inner diameter of the base portion 22a is formed so as to be at least larger than the outer diameter of the distal end portion 7a of the outlet tube 7, and when the upper lid 2 is screwed to the inner plug 3, the distal end portion 7a of the outlet tube 7 is connected to the base portion 22a. It is designed to be located inward.

The end portion 22b is formed to be reversible by a bendable portion 22c, and in the present embodiment, a saw blade-like blade portion 24 is formed. The end portion 22b is provided so as to protrude inward from the base portion 22a , and faces downward until the upper lid 2 is first screwed into the inner plug 3. In the present embodiment, the blade portion 24 is continuously formed over the entire circumference of the end portion 22b. However, a plurality of saw blade-like blade portions 24 may be formed intermittently, and the blade It is also possible to provide a portion where the portion 24 is not formed.

  In the present embodiment, when the upper lid 2 is first screwed into the inner plug 3, the end 22 b first contacts the arc surface 16 of the engagement cylinder 15, and moves upward (arrow) along the arc surface 16. And is formed so as to abut against the guide surface 11 of the outlet tube 7 when the upper lid 2 is further screwed into the inner plug 3. In the present embodiment, the upper lid 2 can be configured such that the end portion 22b is inverted in advance and is screwed to the inner plug 3 in this state. It is possible to appropriately select whether to invert.

Next, the opening process of this embodiment is demonstrated based on FIG.
(1) Before opening, the end 22b of the middle leg 22 is in contact with the guide surface 11 of the outlet tube 7 in an inverted state (see FIG. 4A).

  (2) When the upper lid 2 is rotated in the opening direction (the direction in which the upper lid 2 is opened) to open the container and the screwing between the upper lid 2 and the inner plug 3 is released, the upper lid 2 is moved upward. As it moves, the end 22b moves along the guide surface 11 toward the weakened portion 12, and the blade portion 24 of the end 22b contacts the weakened portion 12 (see FIG. 4B).

  (3) After that, when the upper lid 2 is further rotated in the opening direction and the screwing of the upper lid 2 and the inner plug 3 is released, the blade portion 24 cuts (breaks) the weakened portion 12 and opens the outlet. The cylinder 7 and the planned opening 13 are completely separated to form an opening 13A. At this time, in the present embodiment, since the engagement cylinder 15 of the planned opening portion 13 and the holding cylinder 23 of the upper lid 2 are in an engaged state, the separated planned opening portion 13 does not fall and falls on the upper lid 2. (See FIG. 4C).

  Therefore, the container can be opened simply by rotating the upper lid 2 in the opening direction. Further, since the end 22b of the middle leg 22 can be moved along the guide surface 11 toward the weakened portion 12, the blade portion 24 is brought into contact with the weakened portion 12 more securely and the weakened portion 12 is cut. can do. Furthermore, since the blade portion 24 has a saw blade shape, the weakened portion 12 can be broken (cut) with a smaller force.

  About 2nd Embodiment of this invention. This will be described with reference to FIGS. The difference between the present embodiment and the first embodiment is that instead of cutting the weakened portion 12 by the blade portion 24 formed at the end portion 22b, the opening portion 13 is hooked by the end portion 22b. The weakened portion 12 is broken by engaging the portion 22b and the planned opening portion 13 and pulling up the planned opening portion 13 as the upper lid 2 moves. In addition, about the structure shown with the same code | symbol as 1st Embodiment, since it is the same as that of the same embodiment, description is abbreviate | omitted.

  In the present embodiment, the end portion 22b of the inverted middle leg 22 can be hooked on the planned opening portion 13 when the screwing of the upper lid 2 and the inner plug 3 is first released, that is, when opening. A formed hooked portion 13a is formed. That is, the end 22b has a hook 25 that can be hooked to the hooked portion 13a. In this embodiment, the hook 25 is formed at the tip of the end 22b. Note that the position and the like of the hook portion 25 can be selected as appropriate. Further, the hooked portion 13a is preferably provided in the vicinity of the weakened portion 12, and in this embodiment, the guide surface 11 of the outlet tube 7, the weakened portion 12 and the lower end of the engaging tube 15 of the planned opening portion 13 are provided. By forming the recess 26, the hooked portion 13 a is formed at the lower end of the engagement cylinder 15.

  In the present embodiment, in the opening steps (2) and (3), first, the hooking portion 25 of the end portion 22b of the middle foot 22 and the hooked portion 13a of the planned opening portion 13 are hooked to each other, and further the upper lid 2 When the upper lid 2 is moved upward by releasing the screwing with the inner plug 3, the opening 22 is pulled upward by the end 22b and a load is applied to the weakening portion 12 to thereby weaken the weakening portion. 12 is broken to form an opening 13A.

  In the present embodiment, when the upper lid 2 is screwed to the inner plug 3, the end 22b of the middle foot 22 can be brought into contact with the guide surface 11 of the opening 13A over the entire circumference. Therefore, it is possible to ensure higher resealability.

  As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to the said embodiment, In the range which does not change the summary of this invention, it can change suitably. For example, unlike the third embodiment of the present invention (see FIG. 7), the outlet cylinder 7 does not also serve as the dispensing cylinder, and a dispensing cylinder 27 can be provided outside the outlet cylinder 7 separately. is there. In that case, when the upper lid 2 is screwed onto the middle plug 3, the outer circumferential surface of the middle foot 22 is brought into contact with the inner circumferential surface of the extraction tube 27, so that the middle foot 22 has an end 22 b and The contact with the guide surface 11 increases the contact force between the middle foot 22 and the extraction tube 27, and it is possible to ensure higher resealability.

  Further, the blade portion 24 may be provided with a rib for reinforcement. Furthermore, a knurling, a step or unevenness (not shown) may be provided in the weakened portion 12 so that the blade portion 24 can easily bite into the weakened portion 12.

DESCRIPTION OF SYMBOLS 1 Cap 2 Top cover 3 Inner plug 4 Top wall 5 Screwing cylinder 6 Outer cylinder 7 Outlet cylinder 7a Tip part 8 Screw 9 Inner cylinder 10 Concave 11 Guide surface 12 Weaked part 13 Opening part 13A Opening part 13a Hook part 14 Blocking plate 15 Engaging tube 16 Arc surface 17 Top wall 18 Skirt wall 18a Main tube portion 18b Peripheral tube portion 19 Unsealing band 19a Holding portion 20 Screw 21 Projection 22 Middle foot 22a Base 22b End 22c Bendable portion 23 Holding tube 24 Blade part 25 Hook part 26 Concave part 27 Pipe

Claims (3)

An upper lid, and an inner plug on which the upper lid is screwable,
The inner plug has a cylindrical outlet tube,
The outlet tube has a guide surface formed on the outer peripheral surface of the tip portion thereof and a planned opening portion connected to the tip portion via a weakening portion continuous with the guide surface,
The upper lid has a top wall and a middle foot provided on the inner surface of the top wall,
The middle foot has a base portion and an end portion, and a bendable portion is provided between the base portion and the end portion,
The end portion is a cap provided inside the base portion so as to be hookable to the planned opening portion and reversibly provided by the bendable portion,
When the upper lid is screwed to the inner plug, the end portion comes into contact with the guide surface, and when the upper lid and the inner plug are first unscrewed, the end portion is brought into contact with the guide surface. The cap is characterized in that the weakened portion is broken when it is moved along, is hooked to the planned opening portion, and is further detached. A holding part is provided on the ceiling wall inward from the middle leg of the upper lid,
The cap according to claim 1 , wherein the holding portion can be held so that the planned opening portion does not fall after the breaking portion is broken. The inner plug further has a dispensing cylinder outside the outlet cylinder,
The cap according to claim 1 or 2 , wherein the middle leg is capable of abutting on the dispensing cylinder when the upper lid is screwed onto the middle plug.