JP5559611B2 - Combination of screw cap and dispensing plug - Google Patents

Description

The present invention relates to a so Awa combination of a screw cap and spout in a plug to be used in containers such as for packaging.

  Containers that use screw caps are often manufactured by a blow molding method using varison as the material, but the mouth has a certain inner diameter in terms of filling efficiency and molding restrictions (particularly the inner diameter of the parison). On the other hand, the consumer may want to pour out the contents little by little, and there is a case where an inside plug for pouring with a pouring hole is inserted into the mouth of the container. In general, the bottom surface of the top plate of the screw lid is provided with a sealing middle leg that fits into the dispensing hole of the dispensing inner plug.

  On the other hand, when looking at the relationship between the container, screw cap, and dispensing stopper, the filling stopper is first fitted into the mouth of the container after filling the contents, and then the screw lid is attached to the container. When screwing into the mouth, or by temporarily holding the inner stopper for dispensing inside the screw lid using elastic deformation, screw the screw lid into the mouth of the container to remove the inner stopper for dispensing. There are cases where it is fitted to the mouth (for example, Patent Document 1).

  In the method of setting the inner stopper for dispensing on the screw lid as in the latter, the fitting force of the inner stopper for dispensing to the mouth of the container is far greater than the fitting force of the inner stopper for dispensing to the screw lid. For this reason, once the screw lid is screwed into the mouth of the container, the inner stopper for pouring is held in the state of being fitted into the mouth of the container. The stopper will not come out together. And since this method does not require a process of fitting the dispensing inner stopper to the mouth of the container, it is an advantage that the process after filling can be simplified.

Japanese Patent No. 3627293

  Now, as described above, the inside plug for dispensing is used to dispense the contents little by little, but the amount to be dispensed in one dispensing operation varies depending on the contents, and therefore the dispensing is performed. There are cases in which a plurality of types of inner plugs are prepared depending on the application by preparing a plurality of types in which only the inner diameter of the dispensing hole is changed.

  In this case, as described above, it is common to provide a middle foot for sealing inside the screw lid, but in the prior art including Patent Document 1, the middle foot is used as a dispensing hole of the middle plug for dispensing. Since only one is formed correspondingly, it is necessary to manufacture a plurality of types of screw caps with different sizes of the middle feet depending on the type of the inner plug for dispensing. As a whole group, there is a problem that not only the manufacturing cost increases, but also the management of the product takes time.

  This invention makes it a subject to improve such a present condition.

  The invention of the present application aims to solve the above-mentioned problem by setting a pouring inner stopper and a screw lid. That is, this invention consists of one kind of screw lid screwed into the mouth part of the container and a plurality of kinds of pouring inner plugs with different inside diameters of the pouring holes, and is fitted to the mouth part of the container. In the configuration in which each of the dispensing inner plugs is covered with the screw lid, a middle leg protruding so as to fit into the dispensing hole is provided inside the screw lid. While the same number of concentric plugs are formed concentrically, other types of pouring are used except for the pouring inner plug with the largest inner diameter of the pouring hole among the multiple types of pouring inner plugs An annular groove is formed in the middle plug into which a middle leg having a diameter larger than that of the middle leg fitted into the dispensing hole of the other type of dispensing middle plug is fitted.

In the invention of the present application, the pouring inner stopper may be pre-fitted into the mouth of the container. However, in the invention of claim 2, the plural kinds of pouring inner stoppers are not easily dropped and are not screwed. It can be temporarily held inside the lid, and once the screw lid is screwed into the mouth of the container, it is held in a state of being fitted into the mouth of the container .

  According to the present invention, since one type of screw lid can be used as a set with a plurality of types of extraction plugs, the manufacturing cost of the entire member group having a plurality of types of extraction plugs can be reduced. At the same time, since it is not necessary to prepare a screw cap according to the type of the inner stopper for dispensing, the labor required for storage and management of the screw cap can be reduced. If the structure of Claim 2 is employ | adopted, since the inside stopper for extraction will be hold | maintained in the state which does not fall easily to a screw lid also by fitting the inner leg of a screw lid to the extraction hole, it is still more suitable. is there.

It is a figure which shows 1st Embodiment and is a vertical front view in the state with which the container was mounted | worn. It is a vertical front view of the separated state. It is a partially broken front view in the state where a screw lid was removed. It is a vertical front view of the state combined with the inside stopper for extraction of a small diameter extraction hole. It is a separation sectional view of the inside stopper for extraction of a small diameter extraction hole, and a screw lid. It is a vertical front view which shows 2nd Embodiment.

  Next, an embodiment of the present invention will be described with reference to the drawings. First, the first embodiment will be described.

(1). Structure of the first embodiment In the present embodiment, the screw cap 1 and the dispensing tap 2 are used for a small cylindrical container 3 such as used for a free sample of liquid cosmetics. Yes. While these screw cap 1 and dispense for in stopper 2 and the container 3 is a plan view circular, it is also possible to form status of such ellipse. The size can also be set arbitrarily.

  The container (bottle) 3 is a blow-molded product made of resin or glass, and has a body portion 4 and a mouth portion 5 provided at the upper end thereof. The mouth portion 5 is formed with different diameters by a base portion 5b in which a male screw 5a is formed and a small-diameter spout 5c continuous with the upper end thereof. At the upper end of the spout 5c, an outward annular protrusion 6 is formed as part of a fitting means (fitting part) for attaching the spouting inner stopper 2.

  The screw lid 1 is an injection-molded product made of a resin, and the top plate 7 and the cylindrical body 8 integrally connected thereto form a downward opening. The top surface of the top plate 7 is loosely concavely recessed, and the outer peripheral surface of the cylindrical body 8 increases in diameter as it goes upward, but these designs can be arbitrarily set. A female thread 9 is formed in a substantially lower half of the inner peripheral surface of the cylindrical body 8, and a straight shape (actually a slight draft angle is formed above the female thread 9 with a downward intermediate step surface 10 as a boundary. The upper storage space 11 is attached to the upper storage space 11, and the dispensing inner plug 2 enters the upper storage space 11. Naturally, the spout 5c of the container 3 also enters the upper accommodating space 11.

  The inside plug 2 for pouring is an injection-molded product made of resin. The top plate 12 overlaps the upper end of the spout 5c, the outer cylinder 13 fitted from the outside to the spout 5c, and the inner side to the spout 5c. It is comprised by the inner cylinder 14 which fits tightly, and engages with the outward annular protrusion 6 of the container 3 from the downward | lower direction in the inner peripheral surface of the lower end part in the outer cylinder 13 as a part of a fitting means (it catches). ) An inward annular protrusion 13a is provided.

The outer diameter of the outer cylinder 13 in the dispensing inner plug 2 is set to be slightly smaller than the inner diameter of the upper housing space 11 in the screw lid 1. A thin flange (which may be called a rib or an engagement piece) 15 projecting outward is integrally provided at the lower end of the outer cylinder 13, while the lower end of the inner peripheral surface of the upper housing space 11 in the screw lid 1. Is provided with an inward stopper (undercut) 16 with which the flange 15 abuts from above.

  The flange 15 may be formed so as to extend around the entire circumference, or may be formed in a jumping manner, for example, at four places or six places at equal intervals. When forming in a jumping manner, the circumferential width dimension can be arbitrarily set. Further, the inward stopper 16 may be configured to extend around the entire circumference, or may be formed in a jumping state. The inner surface of the dispensing plug 2 is formed by a rotary core (motor rack), and the inward stopper 16 is forcibly punched. For this reason, the protruding height is slight.

  As clearly shown in FIG. 2, the radius of the flange 15 is set to a diameter that is slightly larger than the radius of the upper accommodation space 11, and when the dispensing plug 2 is fitted into the upper accommodation space 11, As shown in FIG. 1, the flange 15 is deformed so as to be narrowed so as to be inclined downward. For this reason, the flange 15 is stretched from above with respect to the inward stopper 16. Therefore, as shown in FIG. 1, the inward stopper 16 is positioned below the base of the flange 15 by a slight dimension e <b> 2 in a state where the dispensing stopper 2 is fitted in the upper housing space 11.

  In the present embodiment, there are two types of dispensing plugs 2 shown in FIGS. 1 to 3 and those shown in FIG. 4, and those shown in FIGS. The diameter pouring hole 17 is vacant, and the one shown in FIG. The inner diameter of the large-diameter extraction hole 17 is slightly smaller than the inner diameter of the inner cylinder 14. Needless to say, the axial centers of the pouring holes 17 and 18 coincide with the axial center of the pouring inner plug 2.

  A cylindrical large-diameter middle leg 19 that fits tightly from the inside into the large-diameter pouring hole 17 and a cylindrical shape that fits tightly from the inside into the small-diameter pouring hole 18 on the lower surface of the top plate 7 of the screw lid 1. The small-diameter middle foot 20 is formed concentrically. The downward projecting dimensions of the middle legs 19 and 20 are smaller than the thickness of the top plate 7 of the middle plug 2 for dispensing, and the top of the middle plug 2 for dispensing having the small-diameter dispensing hole 18. The face plate 12 is formed with an annular groove 21 into which the large-diameter middle leg 19 is fitted with a little play (the large-diameter middle leg 19 can be fitted into the annular groove 21 exactly).

The large-diameter middle leg 19 must be cylindrical in view of its function, but the small-diameter middle leg 20 may be rod-shaped. Moreover, the protrusion dimension of the small diameter middle leg 20 can be set arbitrarily. Furthermore, when there are three types of the inner diameter of the pouring hole, a small diameter, an intermediate diameter, and a large diameter , the middle foot also forms three small diameters, an intermediate diameter, and a large diameter. during a pouring stopper 2 with Deana is full two annular grooves fitted intermediate-diameter leg and a large-diameter foot is formed, the pouring for in stopper 2 with intermediate径注Deana is One annular groove into which the large-diameter middle leg is fitted is formed. The same applies when there are four or more types of extraction holes.

(2) Summary of First Embodiment As can be understood from the above description, the large diameter middle foot 19 and the small diameter middle foot 20 are formed on the lower surface of the top plate 7 of the screw lid 1, and the small diameter note is formed. Two types of pour-outs with different inner diameters of the pour holes due to the formation of the annular groove 21 into which the large-diameter middle foot 29 fits (displaces) in the pour-out inner plug 2 having the pour holes 18 The stopper 2 can be used for one type of screw lid 1. Therefore, while assortment example as a product having a note Deana different internal diameter, it can suppress the manufacturing costs and management costs.

Now, the upper forms a inwardly stopper to the lower end of the upper accommodation space in screw cap also in Patent Document 1, and the outward protrusion provided at the lower end of the outer tube in the plug in for pouring, it inwardly stopper Is engaged. However, in Patent Document 1, the outward protrusion is not bent and deformed, and the outward protrusion gets over the inward stopper by deforming the dispensing inner plug as a whole. . Therefore, the resistance is increased in the installing or removing the screw cap 1 to the container 3, may feel uncomfortable is concern to consumers.

  On the other hand, in the present embodiment, the flange 15 of the dispensing stopper 2 is bent and deformed to overcome the inward stopper 16, so that the screw lid 1 is attached to or removed from the container 3. The resistance is small and thus does not cause discomfort to the consumer. Further, since the flange 15 is stretched to the inward stopper 16 from above by its own elastic restoring force, the dispensing inner plug 2 is firmly held inside the screw lid 1. That is, the screw lid 1 can be attached and detached easily while ensuring the drop-off preventing function.

  In designing the flange 15 of the present embodiment and the outward projection of Patent Document 1, it is preferable to use a ring shape extending over the entire circumference because the structure of the mold is simplified. However, when it is a ring-like form extending over the entire circumference in a structure that does not deform itself like the outward projection of Patent Document 1, when the inside plug for pouring is fitted into the screw lid at high speed, A phenomenon may occur in which the air between the dispensing inner plug and the screw lid becomes high in pressure and the dispensing inner plug pops out.

  On the other hand, even if the flange 15 of the present embodiment is formed in a ring shape, the flange 15 is constricted in a state where wrinkles are formed by fitting into the screw lid 1, so that air passes between the inward stopper and the flange. There is a gap, and therefore, the internal pressure between the inner periphery of the upper housing space 11 in the screw lid 1 and the outer cylinder of the dispensing inner plug 2 increases, and the dispensing inner plug 2 jumps out. Absent. This is also an advantage of this embodiment.

(3). Second Embodiment / Others In the second embodiment shown in FIG. 6, the upper surface plate 12 of the inner plug 2 for pouring is formed with pouring cylinders 17a, 18a surrounding the pouring holes 17, 18. Yes. Forming the dispensing cylinders 17a and 18a in this way has the advantage that the liquid runs out better when the contents are taken out. When the extraction cylinders 17a and 18a are provided, the middle legs 19 and 20 may be configured to fit into the extraction cylinders 17a and 18a from the outside.

  In the second embodiment, a plurality of fin-like and vertically long locking pieces 23 are projected at equal intervals on the outer cylinder 13 of the pouring inner plug 2, and the locking pieces 23 are connected to the inner periphery of the upper housing space 11. It is in contact with the surface. The radius of the circumscribed circle of the locking piece 23 is set to be slightly larger than the radius of the inner diameter of the upper accommodating space 11 before the locking piece 23 is fitted into the screw lid 1. Yes. That is, by utilizing the fact that the locking piece 23 bends and deforms in a plan view, the locking piece 23 is stretched against the inner peripheral surface of the upper accommodation space 11, so that the dispensing inner plug 2 is placed in the upper accommodation space 11. It is kept in a state that does not fall off. The locking pieces 23 are preferably arranged at equal intervals, and the number of the locking pieces 23 can be set arbitrarily (for example, about 4 to 8).

  The present invention can be embodied in various ways other than the above embodiment. For example, the shape, size, material, etc. of the container, screw cap, and dispensing tap can be arbitrarily designed and selected according to customer requirements. If it is desired to secure a higher sealing performance, it is possible to provide a sealing layer such as packing on the inner surface of the top plate of the screw lid (the middle foot needs to protrude from the sealing layer).

The present invention can be specifically applied to the plug during a left screw cap and notes of the container. Therefore, it can be used industrially.

DESCRIPTION OF SYMBOLS 1 Screw cover 2 Outlet plug 3 Container 5 Container mouth 7 Screw cover top plate 8 Screw cover cylinder 11 Upper accommodation space 12 Top plate of extraction plug 15 Flange as an example of engaging means 16 Inward stopper as an example of engaging means 17 Large-diameter pouring hole 18 Small-diameter pouring hole 19 Large-diameter middle foot 20 Small-diameter middle foot 21 Annular groove

Claims (2)

It consists of one kind of screw lid screwed into the mouth of the container and a plurality of kinds of pouring stoppers with different inside diameters of the pouring holes. The stopper is configured to be covered with the screw lid,
Inside the screw lid, middle legs projecting so as to fit into the dispensing holes are formed concentrically in the same number as the kind of the middle plug for dispensing, while the plurality of types of dispensing are used. The inside plug is inserted into another type of dispensing inner plug except the inside plug for dispensing with the largest inside diameter of the dispensing hole. Forming an annular groove that fits a middle diameter larger foot than the foot,
Combination of screw cap and dispensing stopper. The plurality of types of dispensing inner plugs can be temporarily held inside the screw lid without easily falling off, and once the screw lid is screwed into the mouth of the container, it is fitted into the mouth of the container. To be held in a state,
A combination of the screw cap according to claim 1 and an inner stopper for extraction.

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