JP5909951B2 - Composite cap - Google Patents

Description

  The present invention relates to a composite cap in which an inner cap fitted to a container mouth is covered with an outer lid, and more particularly to a composite cap in which the outer lid is screwed to the inner plug.

In this type of conventional composite cap, the inner plug is opened, the contents are poured out through a dispensing tube provided in the inner plug, and the opened inner plug is resealed with an outer lid.
And the resealing method with the outer lid after opening the inner plug and dispensing the contents, the screw type that the outer lid is screwed to the inner plug, and the outer lid is connected to the inner plug via the hinge part Although there is a one-touch type, the above-described screw type can be resealed reliably, but the outer lid needs to be rotated by a predetermined amount, so that the operability is worse than that of the one-touch type.

In addition, in containers filled with seasonings such as dressings, the user often uses the bottle after shaking it so that the contents are uniform. Although it does not leak, there is a tendency for the user's psychology to tighten the outer lid too strongly for fear of liquid leakage.
However, when tightened in this way, the contact surface pressure at the threaded portion of the outer lid and the inner plug increases and the friction increases, and the outer lid and the inner plug rotate together when the outer lid is opened. Opening may be difficult.

As a technique for preventing such co-rotation, for example, one having a co-rotation prevention rib as described in Patent Document 1 is known, but even if co-rotation of the outer lid and the inner plug is prevented, If the screw tightening force is strong, the initial torque for opening the lid will increase.
Also, in the closed state, the inner ring provided on the top wall of the outer lid is fitted to the inner peripheral surface of the inner cylinder's dispensing tube. If the gap with the outlet tube becomes small and an impact is applied to the outer lid due to a drop of the container or the like, the impact may easily be transmitted to the outlet tube, so that the outlet tube may be deformed.
On the other hand, in order to prevent overtightening of the outer lid, a technique for preventing excessive tightening by providing a stopper has been proposed (see Patent Document 2). The tightening surface pressure may vary, and the seal may not be maintained.

JP 2002-225899 A JP 2003-276748 A

  The object of the present invention is to solve the above-mentioned problems in the composite cap in which the outer cover is screwed to the inner plug, and to quickly open the outer cover with a light force. It is to provide a composite cap that is performed reliably.

In order to achieve the above object, the present invention has a fitting fixing part fitted into a container mouth part, and a dispensing cylinder protruding upward from an upper end of the fitting fixing part via an annular stepped part. A plug,
An outer cylinder part, a top wall part that closes the upper end of the outer cylinder part, an inner ring that projects from the top wall part and fits into the inner periphery of the upper end part of the extraction cylinder , and the inner plug from the lower end of the outer cylinder part has a skirt portion via a step portion of the annular engaging the step portion covering the fitting and fixing an outer periphery in said stopper, in a composite cap and a outer lid which is deposited in said plug,
A male thread part on the outer periphery of the outlet cylinder of the inner plug and a female thread part on the inner periphery of the outer cylinder part of the outer lid are multi-threaded screws,
The male screw portion and the female screw portion are provided with stopper portions that are in contact with each other in the tightening turning direction of the outer lid,
The skirt portion is provided with an inward convex portion that overcomes the outward convex portion provided on the outer periphery of the fitting fixing portion of the inner plug at a position where the stopper portion abuts .
At the position where the stopper portion abuts, the inner ring is fitted into the dispensing cylinder, a gap is maintained between the top wall portion of the outer lid and the upper end portion of the dispensing cylinder, and the male screw portion of the inner plug is The engagement of the female screw portion of the lid is in a state of light contact .

The present invention can also be configured as follows.
1. The said stopper part is provided in the front-end | tip part of the lower end part of the external thread part and the lower end side of an internal thread part.
2. A co-rotation prevention mechanism is provided between the fitting fixing part of the inner stopper and the container mouth part.
3. As the co-rotation preventing mechanism, a rib engaging portion that engages with the co-rotation preventing rib provided on the outer periphery of the container mouth portion is provided on the inner periphery of the fitting fixing portion of the inner stopper.
4). A plurality of protrusions protruding in the circumferential direction are provided on at least one of the stepped portions of the inner plug and the outer lid facing each other.

According to the composite cap of the present invention, the configuration of the male screw portion of the inner plug and the female screw of the outer lid is a multi-threaded screw, so that the turning angle of the opening / closing operation of the outer lid can be reduced, and quick opening / closing operation is possible. And Moreover, excessive tightening of the outer lid is prevented by the stopper portions provided on the male screw portion and the female screw portion.
In addition, an inward convex portion provided in the skirt portion of the outer lid is an outward convex portion provided in the fitting fixing portion of the inner plug at a position immediately before the stopper portions provided in the male screw portion and the female screw portion abut each other. Since it gets over, the end of the tightening operation due to the click feeling can be recognized with certainty, and the inward convex part of the outer lid is locked to the outward convex part of the inner plug. The loosening of the outer lid from the end position is prevented.
Further, if the stopper portion is provided at the lower end portion of the male screw portion and the lower end portion of the female screw portion, the screw thread tip portion of the female screw portion can be used as the stopper portion.

Furthermore, by providing a co-rotation prevention mechanism between the fitting and fixing portion of the inner plug and the container mouth portion, it is possible to reliably prevent the inner plug from co-rotating when the lid is opened.
In particular, as a co-rotation prevention mechanism, a rib engaging portion that engages with a co-rotation prevention rib provided on the outer periphery of the container mouth is provided on the inner periphery of the fitting fixing portion of the inner plug, so It is possible to prevent the rotation more reliably.
Further, at least one of the stepped portions where the inner plug and the outer lid face each other is provided with a plurality of protrusions protruding in the circumferential direction, and the contact between the stepped portions of the inner plug and the outer lid is made point contact. The lid initial torque can be reduced.

FIG. 1 shows a composite cap according to an embodiment of the present invention, in which (A) is a longitudinal sectional view before opening, (B) is a side view of an inner plug, and (C) is a CC line in (A). It is a figure which shows the engagement state of a stopper part in a transverse cross section of a line. 2A is an enlarged vertical sectional view in the vicinity of the projection of the outer lid and the inward convex portion in FIG. 1, FIG. 2B is a transverse sectional view of the rib engaging portion of the inner plug in FIG. 1A, and FIG. These are the enlarged views of the C section in (B), and are a figure which shows a common rotation prevention rib and a rib engaging part. FIG. 3 is an exploded longitudinal sectional view of FIG. 4A and 4B show the inner plug of FIG. 1, in which FIG. 4A is a top view and FIG. 4B is a bottom view. FIGS. 5A and 5B show the outer lid of FIG. 1, in which FIG. 5A is a top view and FIG. 5B is a bottom view.

Hereinafter, the present invention will be described in detail based on the illustrated embodiment.
As shown in FIGS. 1A and 3, the composite cap 1 of the present invention includes an inner plug 10 that is fitted to the container mouth portion 100 and an outer lid 30 that is attached to the inner plug 10. The
The inner stopper 10 includes a fitting fixing portion 11 that is fitted to the outer periphery of the container mouth portion 100, and a pouring cylinder 15 that protrudes upward via an annular stepped portion 13 having a reduced diameter. A male screw portion 19 is provided on the outer periphery.

The pouring cylinder 15 of the inner plug 10 has a cylindrical shape, and a curling portion 15a that curls outward is provided at the upper end. Further, the dispensing cylinder 15 is shielded by the partition wall 17 before opening. As shown in FIG. 4, a score 17a for opening the partition wall 17 is provided at the center of the partition wall 17, and the pull ring 20 is connected to the planned opening region 17b surrounded by the score 17a through a connecting portion. Yes.
When the contents are poured out, the score 17a is broken by the pull ring 20, the contents are poured out from the opening formed by removing the planned opening area 17b, and after the pouring, the outer lid 30 reseals the contents. Is done. The partition wall 17 has a mortar shape, that is, an inclined surface inclined downward in an inverted conical shape as shown in the figure.
Moreover, the fitting fixing part 11 is provided with 11 A of outer cylinder parts fitted to outer periphery of the container mouth part 100, and 11 C of inner cylinder parts fitted to inner periphery of the container mouth part 100, and outer cylinder part 11A and inner cylinder part An annular step portion 13 is connected to the upper end of 11B, and an annular outward convex portion 14 is provided at the outer peripheral upper end portion of the outer cylinder portion 11A.

  Furthermore, an inward fixing protrusion 16 is provided on the inner periphery of the outer cylinder 11A of the fitting fixing portion 11 of the inner stopper 10 and engages with the upper edge of the annular recess 101 provided on the outer periphery of the container mouth portion 100. The stopper 10 is retained. Further, as shown in FIGS. 2B and 2C, a rib engaging portion 51 constituted by a recess is provided between the fixing protrusions 16, and an annular recess 101 on the outer periphery of the container mouth portion 100. The co-rotation prevention rib 50 provided on the upper side engages with each other to prevent co-rotation. Such a co-rotation preventing mechanism is provided between the inner periphery of the container mouth portion 100 and the fitting portion of the inner cylinder portion 11B of the inner stopper 10, between the upper end of the container mouth portion 100 and the step portion 13 of the inner stopper 10, or The co-rotation preventing rib 50 may be provided on the inner stopper 10 side, and the rib engaging portion 51 may be provided on the container mouth portion 100 side.

The outer lid 30 has an outer cylinder portion 31 provided with an internal thread portion 39 that is screwed to an external thread portion 19 on the outer periphery of the extraction tube 15 of the inner plug 10 on the inner periphery, and a top wall that closes the upper end of the outer cylinder portion 31. A portion 33, an annular step portion 35 that engages with the annular step portion 13 of the inner plug 10, and a skirt portion 37 that covers the outer periphery of the fitting fixing portion 11 of the inner plug 10 are provided. An inner ring 38 that is fitted to the inner periphery of the upper end portion of the dispensing cylinder 15 is provided at the center of the inner wall surface of the top wall portion 33.
In addition, a plurality of protrusions 32 that are in point contact with the stepped portion 13 of the inner plug 10 are provided on the lower surface of the stepped portion 35 at equal intervals in the circumferential direction (in this example, 12 locations) (see FIG. 5B). However, the projection 32 may be provided on at least one of the opposed step portions 13 and 35 of the inner plug 10 and the outer lid 30 so as to protrude toward the other.
Furthermore, an inward convex portion 34 that protrudes inward is provided at the inner peripheral upper end portion of the skirt portion 37 of the outer lid 30, and the outer peripheral upper end portion of the outer cylindrical portion 11 A of the fitting fixing portion 11 of the inner plug 10 is provided. The ring-shaped outward projecting portion 14 is locked.

The male screw portion 19 of the inner plug and the female screw portion 39 of the outer lid 30 are multi-threaded screws, and in this embodiment are four-threaded screws. Each male screw portion 19 and female screw portion 39 have four threaded threads 19a and 39a that engage with each other, and the turning angle required to open and close the outer lid is set to about 135 degrees, and the turning operation is performed before half-turning. Is completed. Stopper portions 21 and 22 that are in contact with each other in the turning direction of the outer lid 30 are provided at the closing end positions of the screw threads 19 a and 39 a of the male screw portion 19 of the inner plug 10 and the female screw portion 39 of the outer lid 30, respectively. ing.
As shown in FIG. 1B, the stopper portion 21 on the male screw portion 19 side of the inner plug 10 closes the gap between each screw thread 19 a and the stepped portion 13 at the lower end portion of each screw thread 19 a of the male screw portion 19. It is provided as follows. On the other hand, as shown in FIG. 1C, the stopper portion 22 on the female screw portion 39 side of the outer lid 30 is constituted by a tip portion on the lower end side of the screw thread 39a. And the inward convex part 34 provided in the inner periphery of the skirt part 37 of the outer lid 30 at the position immediately before the end of closing where the stopper parts 21 and 22 are engaged is the fitting fixing part 11 of the inner plug 10. It is in a positional relationship to get over the outward convex portion 14 and engage with the lower edge of the outward convex portion 14.
Note that the positions of the stoppers 21 and 22 are not particularly illustrated, but the stopper 21 on the male screw 19 side is constituted by the tip on the upper end side of the thread 19a, and the stopper 22 on the female screw 39 is screwed. You may provide in the upper end part of the peak 39a.

According to the composite cap of the present invention, the turning angle of the opening / closing operation can be reduced by using a multi-thread screw as the screw provided on the inner plug 10 and the outer cover 30, and in particular, the outer cover 30 by using a four-thread screw. The turning angle can be set to 135 ° or less and a half rotation or less, and a quick opening and closing operation is possible. Further, when a predetermined amount is turned in the tightening direction, the stopper portion 22 provided at the tip of each screw thread 39a of the female screw portion 39 of the outer lid 30 is provided at the terminal end of each screw thread 19a of the male screw portion 19 of the inner plug 10. It strikes against the stopper portion 21 and excessive tightening of the outer lid 30 is prevented.
Further, by tightening the outer lid 30 as described above, the inner ring 38 provided on the top wall portion 33 of the outer lid 30 is liquid-tightly fitted into the upper end opening of the dispensing tube 15 of the inner plug 10, so that the composite cap 1 is securely resealed.
Further, the inward convex portion 34 of the outer lid 30 gets over the outward convex portion 14 of the inner plug 10 at a position immediately before the stopper portion 22 of the outer lid 30 hits the stopper portion 21 of the inner plug 10. Therefore, the end of the tightening operation can be reliably recognized by the click feeling. In addition, the engagement between the inward convex portion 34 of the outer lid 30 and the annular outward convex portion 14 of the inner plug 10 allows the outer lid 30 after the closing operation to be completed regardless of the tightening strength of the outer lid 30. Looseness can be prevented.
Thus, the loosening of the outer lid 30 is not the engagement of the male screw portion 19 of the inner plug 10 and the female screw portion 39 of the outer lid 30, but the inwardly protruding portion 34 of the outer lid 30 and the annular shape of the inner plug 10. Since it is performed by the engagement relationship of the outward projecting portion 14, in the reseal of the composite cap 1, the engagement between the screw caps 19 a and 39 a of the inner plug 10 and the outer lid 30 may be light contact.

  Further, in the present embodiment, the outer lid 30 is prevented from being excessively tightened by the stopper portions 21 and 22 described above, and therefore, between the contact surfaces of the male screw portion 19 and the female screw portion 39 at the position where the outer lid 30 is turned. Further, the contact between the step wall portion 15 of the inner plug 10 and the step portion 35 of the outer lid 30 is a point contact by the protrusion 32 provided on the opposing surface of the step portion 35 of the outer lid 30. Therefore, the friction between the two is reduced, and as a result, the initial opening torque of the outer lid 30 can be reduced, and the lid can be quickly opened with a light force.

  Further, when opening the lid 30, the lid 30 turns along the thread 19 a, 39 a of the male screw portion 19 of the inner plug 10 and the female screw portion 39 of the lid 30, and the inward convex portion 34 of the outer lid 30. Gets over the outward convex portion 14 of the inner plug 10 again, and the engagement relationship is released. At this time, since the co-rotation prevention rib 50 and the rib engaging portion 51 are provided on the inner periphery of the outer cylinder 11A of the fitting fixing portion 11 of the inner stopper 10 at the container mouth portion 100, the outer lid is opened when the lid is opened. Co-rotation of 30 and the inner plug 10 is prevented.

In addition, by using the curled portion 15a as the tip shape of the pouring cylinder 15 of the inner plug 10, the drainage of the contents after pouring is improved, and the partition wall 17 in the pouring cylinder 15 has a mortar-shaped inclined surface. By doing so, the content remaining in the inner plug 10 after the pouring is easily returned to the container, and contamination by the content liquid adhering to the outer periphery of the pouring cylinder 15 is prevented. And the contamination by the adhesion of the contents on the outer periphery of the dispensing tube 15 of the inner plug 10 is prevented, so that the opening / closing operation of the outer lid 30 can be further facilitated.
As described above, the composite cap 1 of the present invention prevents overtightening by the stopper portion 21 of the inner plug 10 and the stopper portion 22 of the outer lid 30, and the inner plug 10 and the screw portions 19 and 39 of the lid body 30 are in light contact with each other. Since the outer lid 30 and the inner plug 10 are prevented from coming off by the engagement of the inward convex portion 34 of the outer lid 30 and the outer convex portion 14 of the inner plug 10, an excessive tightening force does not act, and the lid body Since the gap is maintained between the top wall portion 33 of the 30 and the upper end portion of the dispensing tube 15 of the inner plug 10, the upper end portion of the dispensing tube 15 of the inner plug 10 is deformed when the container is dropped, thereby improving resealability. There is no risk of damage.

1 Composite cap 10
11 fitting fixing part, 11A outer cylinder part, 11B inner cylinder part 12 outward convex part 13 step part, 14 outward convex part,
DESCRIPTION OF SYMBOLS 15 Pouring cylinder, 15a Curl part 16 Fixing protrusion 17 Bulkhead, 17a Score, 17b Planned opening area 19 Male thread part, 19a Thread
20 Pull ring 21 Stopper 22 Stopper (female thread end)
30 outer lid 31 outer cylinder part,
32 Projection 33 Top wall portion 34 Inward convex portion 35 Step portion 37 Skirt portion 38 Inner ring 39 Female thread portion, 39a Screw thread 50 Co-rotation prevention rib, 51 Rib engagement portion 100 Container mouth portion, 101 Annular recess

Claims (5)

An inner stopper having a fitting fixing portion fitted into the container mouth portion, and an extraction tube protruding upward from the upper end of the fitting fixing portion via an annular stepped portion;
An outer cylinder part, a top wall part that closes the upper end of the outer cylinder part, an inner ring that projects from the top wall part and fits into the inner periphery of the upper end part of the extraction cylinder , and the inner plug from the lower end of the outer cylinder part has a skirt portion via a step portion of the annular engaging the step portion covering the fitting and fixing an outer periphery in said stopper, in a composite cap and a outer lid which is deposited in said plug,
A male thread part on the outer periphery of the outlet cylinder of the inner plug and a female thread part on the inner periphery of the outer cylinder part of the outer lid are multi-threaded screws,
The male screw portion and the female screw portion are provided with stopper portions that are in contact with each other in the tightening turning direction of the outer lid,
The skirt portion is provided with an inward convex portion that overcomes the outward convex portion provided on the outer periphery of the fitting fixing portion of the inner plug at a position where the stopper portion abuts .
At the position where the stopper portion abuts, the inner ring is fitted into the dispensing cylinder, a gap is maintained between the top wall portion of the outer lid and the upper end portion of the dispensing cylinder, and the male screw portion of the inner plug is A composite cap characterized in that the engagement of the female screw portion of the lid is in a state of light contact .   The composite cap according to claim 1, wherein the stopper portion is provided at a lower end portion of the male screw portion and a tip portion on a lower end side of the female screw portion.   The composite cap according to claim 1, wherein a co-rotation preventing mechanism is provided between an inner periphery of the fitting fixing portion of the inner plug and an outer periphery of the container mouth.   The rib engagement portion that engages with a rotation preventing rib provided on the outer periphery of the container mouth is provided on the inner periphery of the fitting fixing portion of the inner plug as the rotation preventing mechanism. Composite cap.   The composite cap according to any one of claims 1 to 4, wherein a plurality of protrusions projecting toward the other are provided in at least one of the stepped portions of the inner plug and the outer lid facing each other. .

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