JP3928359B2 - Container with sorting cap - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a container with a separation cap that is configured by screwing and assembling an outer cap to a separable and removable inner plug body assembled to a housing mouth tube.
[0002]
[Prior art]
As a container for liquid foods, etc., an inner plug body with a spout is assembled to the casing mouth tube by undercut coupling, and an outer cap for opening and closing the spout is detachably screwed into the inner plug body Is widely used.
[0003]
Also, in recent years, from the viewpoint of separating and collecting waste, a thin groove-shaped weakening line or thin portion that can be broken is formed in advance in the inner plug body assembled to the housing mouth tube. A material in which the thin plug portion is broken so that the inner plug body can be easily removed from the housing is also used.
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional container with a separation cap, since the weakening line and the thin part are provided in the inner plug body, the assembly of the inner plug body with respect to the casing mouthpiece tends to be loosened. There is a problem that when the cap is rotated, the inner plug body rotates together, which may make it difficult to unscrew the outer cap.
[0005]
Therefore, the present invention was devised to solve the above-described problems in the prior art, and in a container with a separation cap, it is a technical problem to prevent co-rotation of the inner plug during rotation of the outer cap, Therefore, it is an object to ensure that the outer cap can be screwed open.
[0006]
[Means for Solving the Problems]
Of the present invention for solving the above technical problems, the first invention is:
A tube with an inner plug body that has a spout and is provided with a thin weakening line for separation and removal is assembled to the outer periphery of the casing's mouth tube by undercut coupling, and the spout is opened and closed on the inner plug body. A container constructed by detachably attaching an outer cap to the outer cap;
Providing a locking portion for preventing co-rotation with the outer cap of the inner plug body between the neck ring protruding from the outer periphery of the mouth tube of the housing and the lower end portion of the inner plug assembly cylinder;
It is in.
[0007]
When the cylinder with the inner plug assembly is assembled to the outer periphery of the casing's mouth tube, the locking portion provided between the neck ring on the outer periphery of the casing's mouth tube and the lower end of the assembly tube with the inner plug body is engaged. This prevents the inner plug from rotating together during rotation of the outer cap, ensures that the outer cap can be unscrewed and released at all times, and provides a stable assembly of the inner plug to the housing's mouthpiece. To maintain.
[0008]
When the inner plug body is separated from the housing, the assembly force of the assembled tube against the housing mouth tube disappears due to the breakage of the weakening line formed on the assembled tube of the inner plug body. The locking function also disappears, and the separation of the inner plug body from the casing mouth tube is smoothly achieved without being obstructed by the locking portion.
[0009]
2nd invention adds the structure which provided the latching | locking part for co-rotation prevention to the structure of 1st invention between the upper surface of the neck ring, and the lower end surface of the assembly | attachment cylinder. .
[0010]
In the second aspect of the present invention, the locking function of the locking portion can be exhibited by utilizing the plugging operation and the undercut coupling force, so that the structure of the locking portion can be simplified.
[0011]
The third invention adds to the configuration of the first invention that a locking portion for preventing co-rotation is provided between the outer peripheral surface of the neck ring and the inner peripheral surface of the lower end portion of the assembled cylinder. Is.
[0012]
In the third aspect of the invention, since the locking portion is configured using the external fitting assembled state of the inner plug assembly cylinder with respect to the neck ring of the housing, it is affected by the plugging force and the undercut coupling force. It is possible to exhibit a strong and stable locking ability as set.
[0013]
According to a fourth aspect of the present invention, in the configuration of the first aspect of the invention, a plurality of sharpened biting pieces protruding from the neck ring so as to bite the locking portion for preventing co-rotation into the lower end portion of the assembled cylinder Consists of the above.
[0014]
In the fourth aspect of the present invention, the locking portion can be locked using the plugging force as it is, and the structure of the locking portion is simplified.
[0015]
According to a fifth aspect of the present invention, in the configuration of the first aspect of the present invention, a locking portion for preventing co-rotation is provided at the bottom end of the cylinder with the locking projection piece protruding from the neck ring and locked. This is made up of a locking groove on which the protruding piece can be locked.
[0016]
In the fifth aspect of the invention, it is possible to exhibit the locking function as set without being affected by the stoppering force, thereby exhibiting a stable locking operation.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
1 to 3 show a first embodiment of the present invention, and an engagement groove 3 for undercut coupling is substantially formed on an outer peripheral surface of a mouth tube 2 erected at the upper end of a casing 1. A neck ring 4 is provided around the central portion, and a neck ring 4 is provided below the central portion, and a plurality of sharp bites forming a locking portion 5 for preventing co-rotation are formed on the upper surface of the neck ring 4. The projecting piece 6 is projected along the radial direction.
[0018]
An inner plug body 10 integrally formed of a relatively soft synthetic resin is provided at the upper end of an assembled cylinder 11 having an engagement protrusion 12 that is undercut coupled to the engagement groove 3 of the housing 1 around the inner peripheral surface. Further, a screw cylinder 14 having a thread 15 engraved on the outer peripheral surface is continuously provided via the top wall 13, and a pouring cylinder 16 that forms a spout is continuously provided at the upper end of the screw cylinder 14 via the top wall. It is configured.
[0019]
The lower end of the pouring tube 16 is closed by a mouth wall 17 having an inner portion of the breaking groove as a removal wall portion, and this removal wall portion is formed by pulling up a pull ring 18 integrally provided on the upper surface when in use. Then, it is broken and removed at the breaking groove portion.
[0020]
The lower end portion of the assembled tube 11 of the inner plug body 10 is formed to have a length necessary for the biting protrusion 6 to bite into the lower end surface of the inner tube 11 and prevent co-rotation. (See FIGS. 2 and 3).
[0021]
The separation / removal mechanism 20 for the inner plug body 10 is provided with a handle portion 21 having a knurled outer surface on a part of the assembled cylinder 11, and has a vertical hole 22 on one side of the handle portion 21, and a lower end portion thereof. The thin wall 23 is connected to the thin wall portion 23, and a slit 24 having one end continuous with the vertical hole 22 is formed in the top wall 13 portion at the upper end of the handle portion 21, and the thin wall groove extends from the front end to the substantially half circumference of the top wall 13 portion. In this configuration, a weakening line 25 is provided.
[0022]
At the time of separation and removal, the thin end portion 23 is broken by pulling the tip of the handle portion 21 outward, and then the handle portion 21 is picked and pulled backward to break the weakening line 25 to the rear portion. It can be easily removed from the tube 2.
[0023]
The outer cap 30 is provided with a thread that is threaded into the thread 15 of the inner plug 10 on the upper inner peripheral surface of the peripheral wall 31.
[0024]
FIG. 4 shows a second embodiment of the present invention, in which a locking portion 5 for preventing co-rotation is provided with a plurality of latch-like engagements protruding from the upper surface of the neck ring 4 of the housing mouthpiece 2. The stopper protrusion 7 and a plurality of locking grooves 19 that are recessed in the lower end surface of the assembled tube 11 of the inner plug body 10 and can be locked from the circumferential direction are configured. .
[0025]
FIGS. 5 and 6 show a third embodiment of the present invention. A plurality of locking portions 5 for preventing co-rotation are provided on the outer peripheral surface of the neck ring 4 of the casing mouth tube 2. A latch-like locking projection piece 7 and a plurality of locking grooves 19 which are recessed in the inner peripheral surface of the lower end portion of the assembled tube 11 of the inner plug body 10 and the locking projection piece 7 can be locked from the circumferential direction; Consists of.
[0026]
The locking protrusion 7 and the locking groove 19 may each be formed in a knurled shape, and the biting protrusion 6 that bites into the inner peripheral surface of the lower end portion of the assembled cylinder 11 on the outer peripheral surface of the neck ring 4. May be provided. In the case where the latching portion 5 is formed by the biting protrusion 6 (including the first embodiment), the casing 1 is made of a hard resin material such as PET, or at least the mouth tube 2 is made of a hard material. It is good.
[0027]
FIGS. 7 and 8 show a fourth embodiment of the present invention, in which the separation / removal mechanism 20 for the inner plug body 10 extends from the upper end on one side of the vertical hole 22 formed in the assembled cylinder 11 over a substantially half circumference. A thin groove-shaped weakening line 25 is provided, a handle piece 26 is extended from the lower end to the other side of the vertical hole 22, and the tip inner surface of the handle piece 26 is assembled with a breakable thin connecting piece 27. 11 is configured.
[0028]
Further, the locking portion 5 for preventing co-rotation includes a plurality of latch-like locking protrusions 7 projecting from the outer peripheral surface of the neck ring 4 of the casing mouth tube 2 and a tube with a combination of the inner plug body 10. 11 includes a plurality of locking grooves 19 that are recessed in the inner peripheral surface of the lower end portion and that can be locked in the circumferential direction by the locking projection piece 7 (see FIG. 8).
[0029]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be obtained.
In the first aspect of the invention, when the assembled tube of the inner plug is assembled to the mouthpiece of the housing, the locking portion provided between the neck ring of the housing and the lower end of the assembled tube is engaged. Therefore, the inner cap can be prevented from co-rotating during rotation of the outer cap, and the outer cap can always be reliably screwed and opened even with respect to the inner plug provided with the separating / removing means.
[0030]
Further, since the locking portion on the inner plug body side is provided in the assembled cylinder provided with the separation / removal mechanism, the separation operation is performed on the assembled cylinder and at the same time the engagement with the locking portion on the housing side. As a result, the locking portion disappears, and the locking portion does not adversely affect the separation process of the separation cap.
[0031]
In the second aspect of the invention, the locking function of the locking portion can be exhibited using the plugging operation and the undercut coupling force, so that the structure of the locking portion can be simplified.
[0032]
In the third aspect of the invention, the locking portion is configured using the external fitting assembly state of the tube with the inner plug assembly with respect to the neck ring of the housing, so that the impact on the plugging force and the undercut coupling force is affected. Without being done, it is possible to exert the strong and stable locking ability as set, and it exhibits a powerful and reliable anti-corotation effect.
[0033]
In the fourth aspect of the invention, the locking portion can be locked using the plugging force as it is, so that the structure of the locking portion is simplified and alignment along the circumferential direction is not required. Therefore, the assembly of the inner plug body to the housing is facilitated.
[0034]
In the fifth invention, it is possible to exert the locking function as set without being affected by the stoppering force, thereby exhibiting a strong and stable locking operation, and a high co-rotation preventing effect Demonstrate.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a first embodiment of the present invention.
FIG. 2 is an enlarged longitudinal sectional view of a main part of the embodiment shown in FIG.
FIG. 3 is a sectional view taken along line AA in FIG. 2;
4 is a longitudinal sectional view showing the second embodiment of the present invention at the same position as FIG. 3. FIG.
FIG. 5 is a perspective view of the upper part of the housing, showing a third embodiment of the present invention.
FIG. 6 is an enlarged vertical sectional view of a main part of a third embodiment.
FIG. 7 is a perspective view showing a fourth embodiment of the present invention in a state where an inner plug is assembled to a housing.
8 is an enlarged half plan view of the main part of the embodiment shown in FIG. 7;
[Explanation of symbols]
1; Housing 2; Mouth tube 3; Engagement groove 4; Neck ring 5; Locking part 6; Biting protrusion 7; Locking protrusion 10; Inner plug 11; Top wall 14; screw cylinder 15; thread 16; pouring cylinder 17; mouth wall 18; pull ring 19; locking groove 20; separable detachment mechanism 21; handle 22; vertical hole 23; thin part 24; Weakening line 26; handle piece 27; connection piece 30; outer cap 31;

Claims (1)

A container in which an inner plug (10) having a spout is assembled to the mouthpiece (2) of the casing (1) by undercut bonding,
The casing (1) has a neck ring (4) projecting from the outer periphery of the mouth tube (2), and an outer peripheral surface of the neck ring (4) is provided with a locking projection piece (7) projecting outward. ,
The inner plug (10) includes an assembled tube (11) assembled to the mouth tube (2) by undercut coupling, and a grip portion (21) is provided on the outer periphery of the assembled tube (11). It is connected to the handle (21) and has a thin weakening line (25) for separating and extending along the outer periphery of the inner plug (10), and an outer cap (30) for opening and closing the spout is attached to the upper part. Screw it together,
Furthermore, the lower end portion of the assembled cylinder (11) has an inner diameter that is assembled to the outer periphery of the neck ring (4) from the outside when the inner plug (10) is assembled to the mouth cylinder (2). A locking groove (19) engaged with the locking protrusion (7) is provided on the inner peripheral surface, and a locking portion (5) for preventing co-rotation with the outer cap (30) is provided on the locking groove ( 19) and a container with a separation cap formed from the locking protrusion (7) .

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