JP2003191993A - Spouting cap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spouting cap which can be easily classified and detached from a vessel without providing any weakened line for classification and breakage, and excellently and smoothly achieve the punch-assembly/classification and detachment of the spouting cap to/from the vessel. <P>SOLUTION: The spouting cap comprises a cap body 1 in which a fitting projecting bar 13 is circumferentially provided on an outer circumferential surface of a lower end of an assembly cylinder 2 which has a spout 8 on a top part and is undercut-coupled with the outer circumference of a vessel mouth cylinder 24, and an outer ring 15 with a front lower end part connected to a front lower end part of the assembly cylinder 2 by a connection piece 14 is externally fitted to the fitting projecting bar 13 at a lower end part thereof, and a lid body 18 to open/close the spout 8. The assembly strength of the assembly cylinder 2 to the vessel mouth cylinder 24 is set so that the cap body can be detached by pulling up the outer ring 15 by hand, and the cap body 1 can thus be easily detached from the bottle mouth cylinder 24. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin pouring cap which is mounted on a bottle and can be easily separated from the bottle-shaped container at the time of disposal.

[0002]

As a conventional example of this type of pouring cap,
The one described in Japanese Utility Model Registration No. 2596699 is known.

In this prior art pouring cap, a longitudinal weakening line is provided in the assembled cylinder of the cap body fitted on the outer periphery of the container mouth cylinder from the upper end to the lower end near one end of the hinge. , The top plate of the cap body is provided with continuous weakening lines in the circumferential direction above the weakening lines, and at the time of disposal, pulling the lid that is integrally connected via a hinge will remove both weakening lines. After breaking, the entire cap is removed from the container mouthpiece and separated.

In general, synthetic resin pouring caps are
It is integrally molded with a relatively hard synthetic resin such as polypropylene because it is required to have a strength for assembling to a container, a strength of a hinge portion, and durability.

[0005]

However, in the above-mentioned prior art, when the pouring cap in which the weakening line for separating and breaking is provided in the cap body is integrally molded with a hard synthetic resin such as polypropylene, Although the strength and durability required for the cap are satisfied, the weakening line is difficult to break, so a large operating force is required to break the weakening line at the time of sorting and disposal, and this sorting work can be performed quickly and smoothly. There was a problem that I could not do it.

Further, in the above-mentioned prior art, in order to fix the cap to the container mouth tube, there are a circumferential projection provided on the outer circumference of the container mouth and a locking projection provided on the inner circumference of the assembled cylinder. However, there is a problem that the longitudinal weakening line may be broken because the assembling cylinder is forcibly expanded when overcoming with this stopper. there were.

Therefore, the present invention was devised in order to solve the above-mentioned problems in the prior art, in which the pouring cap is removed from the container without providing a weakening line for separate breaking.
It is a technical issue to make it possible to easily separate and separate with normal force, with the purpose of making it possible to satisfactorily and smoothly achieve the stopper assembly of the spout cap to the bottle and the separate separation. To do.

[0008]

[Means for Solving the Problems] [Means for Solving the Problems] Among the present invention for solving the above-mentioned technical problems, the means for carrying out the invention according to claim 1 is a locking projection provided on an outer peripheral surface of a container mouth cylinder so as to protrude from an inner peripheral surface. Has an assembling cylinder that is undercut-joined by means of the above, and has a fitting ridge projectingly provided on the outer peripheral surface substantially facing the locking ridge, and an unbreakable connecting piece is provided on the front outer peripheral surface of the assembling cylinder. An outer ring which is continuously provided through the fitting projection, and which is arranged outside the assembling cylinder, and has a cap body having a spout at the top.
It has a lid that opens and closes the spout of the cap body, the assembling strength of the assembling cylinder to the container mouth cylinder is set so that it can be removed by manually pulling up the outer ring, and a synthetic resin integrally molded product That is,

The assembling of the pouring cap to the container mouth cylinder is performed by undercut coupling by tapping, but in that case, since the assembling cylinder of the cap body is not provided with a weakening line, the assembling cylinder is expanded. There is no fear that the weakening line will be broken by this, and the pouring cap can be assembled safely, reliably and smoothly.

In order to separate and remove the spout cap, after pulling up the rear part of the outer ring to remove the assembling cylinder from the fitting ridge, and further pulling up the outer ring, the assembling cylinder is manually removed. Since it is attached to the container mouthpiece with enough strength to remove it by pulling up, through the connecting piece,
The assembled cylinder can be easily separated from the container mouth cylinder (see FIGS. 5 and 8).

According to a second aspect of the present invention, in addition to the configuration of the first aspect of the invention, the connecting piece is arranged near the height position of the locking projection, and the invention of the first aspect is also provided. In the above, the means for setting the assembling strength of the assembling cylinder with respect to the container mouth portion is based on the wall thickness of the assembling cylinder.

According to the second aspect of the present invention, a desired assembling strength can be imparted to the assembling cylinder by a simple structure in which the wall thickness of the assembling cylinder is set to a desired value. Also, since the pulling force of the outer ring acts on the vicinity of the locking projection through the connecting piece, it effectively acts to release the assembling of the assembling cylinder from the container mouth cylinder.

According to a third aspect of the invention, the means for setting the assembling strength of the assembling cylinder with respect to the container mouth cylinder according to the first aspect of the invention is provided on the assembling cylinder from the locking projection to the lower end edge. A plurality of split grooves are formed and are arranged at intervals along the circumferential direction.

According to the third aspect of the present invention, by properly setting the number, size and arrangement of the split grooves provided in the assembling cylinder, the assembling cylinder can be attached to the container mouth tube as a single unit. It is easy to reduce the strength to a desired level.

According to a fourth aspect of the present invention, in addition to the structure of the first or second aspect of the invention, the locking projection is provided with an intermittent structure.

According to the fourth aspect of the invention, since the locking force of the locking projection itself is reduced, it is effective as an auxiliary means for setting the assembling force of the assembling cylinder.

According to a fifth aspect of the present invention, there is provided the first aspect of the present invention.
In the configuration of the invention described in 2, 3, or 4, the lid is configured as a hinge lid that is connected to the rear upper end of the outer ring via a hinge.

According to the fifth aspect of the present invention, since the rear portion of the outer ring can be pulled up via the hinge by pulling up the hinge lid, the separation and removal operation of the spout cap can be performed more easily and smoothly. This can be done (see Figure 5).

According to a sixth aspect of the present invention, there is provided the first aspect of the present invention.
In the configuration of the invention described in 2, 3, or 4, the lid body is configured as a screw lid that is screwed into a screw cylinder of the cap body.

In the invention according to claim 6, the opening / closing operation of the screw lid, that is, the attaching / detaching operation of the screw lid has no influence on the assembling of the outer ring with respect to the fitting projection of the assembling cylinder. Therefore, the proper assembly state of the outer ring with respect to the assembly cylinder can be stably maintained during the use of the spout cap.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show the first embodiment, in which the spout cap has a spout 8 at the top and is attached to the cap body 1 that is assembled to the container mouth tube 24, and is hinged to the cap body 1. And a lid 18 which is

The cap body 1 is provided with a top plate 4 on the inner side of the upper end of the assembling cylinder 2 which is undercut-joined to the outer circumference of the container mouth cylinder 24.
And the engaging cylinder piece 5 into which the lid 18 is fitted is erected on the upper surface of the top plate 4, and the seal that is in close contact with the inner peripheral surface of the container mouth cylinder 24 inside the lower surface of the top plate 4. A pipe 6 is provided so as to hang down, and a pouring pipe 7 that forms a pouring port 8 is erected on the inner end of the upper surface of the top plate 4.

The bottom surface of the spout 8 of the cap body 1 is closed by a mouth wall 9 having an inner portion of the breaking groove 10 as a removal wall portion 11. The removal wall portion 11 is integrally provided on the upper surface thereof. When the pull ring 12 is pulled up at the time of use, the pull ring 12 is broken and removed at the break groove 10.

The assembling cylinder 2 is formed to be relatively thin so that it can be easily elastically deformed, and a locking projection 3 for undercut coupling is provided on the inner peripheral surface of the lower end portion thereof, and at the same time, the lower end portion thereof is provided. A fitting protrusion 13 is provided around the outer peripheral surface except the front end portion.

Outside the assembled cylinder 2, an outer ring 15 whose front lower end is connected to the front lower end of the assembled cylinder 2 by a connecting piece 14 is arranged so as to surround the assembled cylinder 2. ing.

The lower end portion of the outer ring 15 is formed into a thin portion 16 by expanding the inner diameter except the front end portion, and the lower end portion of the upper thick portion of the outer ring 15 is fitted into the assembling cylinder 2. The thin fitting cylinder 2 is fitted onto the ridge 13 to hold the thin fitting cylinder 2 firmly against the bottle mouth cylinder 24.

The lid 18 is formed as a hinge lid 19 connected to the rear upper end of the outer ring 15 via a hinge 17, and is fitted to the engaging cylinder piece 5 at the lower end of the inner peripheral surface of its peripheral wall. An engaging projection 22 is formed around the inner wall of the top wall, and the inner wall of the top wall is in close contact with the inner peripheral surface of the spout cylinder piece 7 to seal the spout 8. The piece 21 is projected.

During molding, this pouring cap is in a state in which the thick portion of the outer ring 15 is positioned above the fitting ridge 13 of the assembling cylinder 2 and is not fitted outside, as shown in FIG. The outer ring 15 is pushed down together with the hinge lid 19 by assembling the spout cap with the container mouth tube 24, and the lower end of the thick portion of the outer ring 15 is fitted onto the fitting projection 13. It is supposed to do.

FIG. 6 shows a second embodiment of the present invention. In the first embodiment, the locking projection 3 of the assembling cylinder 2 is replaced by a means for forming the assembling cylinder 2 thinly. By forming and forming a plurality of split grooves 2a at intervals in the lower half of the container along the circumferential direction, the assembling strength of the assembling cylinder 2 with respect to the container mouth cylinder 24 can be removed by hand. It is the one. When setting the arrangement of the split groove 2a, the split groove 2a is prevented from overlapping the connecting piece 14.

FIG. 7 shows a third embodiment of the present invention. By providing a plurality of notches 3a at intervals,
The locking projection 3 is configured to have an intermittent structure, and the locking force of the locking projection 3 with respect to the container mouth tube 24 is reduced. By using the assembly tube 2 in combination with a thin structure, Attached tube 2
The degree of decrease in the assembling force with respect to the container mouth tube 24 can be further increased.

8 to 10 show a fourth embodiment of the present invention, in which a lid 18 is screwed into a screw cylinder 23 provided below the spout cylinder 7 of the cap body 1. It is configured as 20.

In this fourth embodiment, the cap body 1
In order to fit the outer ring 15 onto the fitting projection 13 from the state at the time of molding (see FIG. 3), for example, by screwing the screw lid 20, the outer ring 15 may be pushed down at its lower end. Alternatively, by means such as pushing down the outer ring 15 with an appropriate jig.

[0033]

Since the present invention has the above-mentioned structure, it has the following effects. In the invention according to claim 1, in the assembling of the spout cap to the container mouth tube, since the weakening line is not provided in the assembling cylinder of the cap main body, the weakening line is generated by expanding the assembling cylinder. There is no fear of breaking, and the pouring cap can be assembled safely, reliably and smoothly.

Further, when the spout cap is separated and removed at the time of disposal, the rear portion of the outer ring is pulled up to remove it from the fitting projection of the assembling cylinder, and then the outer ring is further pulled up, whereby the container mouth tube of the assembling cylinder is pulled out. As for the assembling strength, the outer ring can be easily removed by manually pulling up the outer ring, so that the assembling cylinder can be easily detached from the container mouth tube through the connecting piece, and thus the weakening line is broken. The dispensing cap can be easily and smoothly removed from the container mouth tube without requiring an operating force.

According to the second aspect of the present invention, a desired assembly strength can be imparted to the assembly cylinder by a simple structure in which the wall thickness of the assembly cylinder is set to a desired value, and the outer ring can be provided. The pulling force from the can effectively act on the assembling cylinder, which makes it extremely easy to remove the spout cap.

According to the third aspect of the present invention, the assembling strength of the assembling cylinder can be adjusted in a wide range by setting the number, size and arrangement of the split grooves provided in the assembling cylinder. This makes it easier to set a desired assembling strength.

According to the fourth aspect of the present invention, since the locking ridge has an intermittent structure, the locking force of the locking ridge itself can be reduced, whereby the assembling force of the assembling cylinder can be reduced. Can be effectively used to reduce

According to the fifth aspect of the invention, since the outer ring is pulled up by utilizing the hinge lid of a size that is convenient for gripping, the pulling-up operation of the outer ring can be performed very suitably and stably. be able to.

According to the sixth aspect of the invention, the attaching / detaching operation of the screw lid with respect to the cap body does not affect the external fitting state of the outer ring with respect to the fitting projection of the assembling cylinder. Always keep the assembled state of the mating ridge and the mating ridge in good condition.

[Brief description of drawings]

FIG. 1 is an overall perspective view of an open posture showing a first embodiment of the present invention.

FIG. 2 is a perspective view of an essential part of the embodiment shown in FIG.

FIG. 3 is an overall vertical sectional side view of the embodiment shown in FIG. 1 in a closed posture state.

FIG. 4 is a plan sectional view taken along the line AA in FIG.

5 is an explanatory perspective view sequentially showing the separation and removal state of the embodiment shown in FIG.

FIG. 6 is a side view, partly cut away, showing the second embodiment of the present invention.

FIG. 7 is a plan sectional view showing a third embodiment of the present invention.

FIG. 8 is an overall perspective view showing a fourth embodiment of the present invention.

9 is a perspective view of the cap body of the embodiment shown in FIG. 8 with a part broken away.

FIG. 10 is an explanatory perspective view sequentially showing separation and removal states of the embodiment shown in FIG.

[Explanation of symbols]

1; Cap body 2; Assembled cylinder 2a; split groove 3; Locking ridge 3a; missing part 4; Top plate 5; Engagement tube piece 6; Seal tube 7; Dispensing cylinder 8; outlet 9; Mouth wall 10; Break groove 11; Removal wall 12; Pull ring 13; Mating ridge 14; Connecting piece 15; Outer ring 16; Thin part 17; Hinge 18; Lid 19: Hinge lid 20; Screw lid 21; Stopper piece 22; Engagement ridge 23; screw cylinder 24; Container mouth

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shinji Shimada             Stock exchange, 3-2-6 Oshima, Koto-ku, Tokyo             Inside the company Yoshino Industry F term (reference) 3E084 AA12 BA03 CA01 CB01 CB02                       CC03 CC05 DA01 DB01 DB13                       DB17 DC03 DC05 EA04 EB01                       EB02 EC03 EC05 FA03 FC04                       GA06 GB06 LA03 LA07 LA18                       LB02

Claims (6)

[Claims] 1. An outer peripheral surface which is undercut-joined to the outer periphery of the container mouth tube (24) by a locking projection (3) projectingly provided on the inner peripheral surface thereof and which substantially opposes the locking projection (3). It has an assembling cylinder (2) projecting around a fitting protrusion (13) at a location, and is continuously connected to the front outer peripheral surface of the assembling cylinder (2) via an unbreakable connecting piece (14). And the outer ring (15) which is fitted onto the fitting protrusion (13) is attached to the assembly cylinder (2).
The cap body (1), which is disposed on the outside of the container and has a spout (8) at the top, and a lid (18) for opening and closing the spout (8), and the container mouth tube (24) The synthetic resin pouring cap in which the assembling strength of the assembling cylinder (2) is set so that the assembling strength can be removed by manually pulling up the outer ring (15). 2. The connecting piece (14) is arranged near the height position of the locking projection (3), and the means for setting the assembling strength of the assembling cylinder (2) with respect to the container mouth cylinder (24) is used for the assembly. The spout cap according to claim 1, wherein the cap (2) has a wall thickness. 3. A locking projection for setting the assembling strength of the assembling cylinder (2) to the container mouth cylinder (24) is provided on the assembling cylinder (2).
The spout cap according to claim 1, wherein the spout cap is formed by a plurality of split grooves (2a) which are formed from (3) to the lower edge and are arranged at intervals along the circumferential direction. 4. The locking projection (3) has an intermittent structure.
Or the dispensing cap described in 2. 5. The lid body (18) according to claim 1, 2, 3 or 4, wherein the lid body (18) is configured as a hinge lid (19) connected to a rear upper end of the outer ring (15) via a hinge (7). Pouring cap. 6. The screw body (2) of the cap body (1) is provided for the lid body (18).
The screw lid (20) which is screwed to 3), and is configured as a screw lid (20).
The pouring cap according to 3 or 4.