JP2003011999A - Pour cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pour cap constituted so as to prevent the unwilling detachment of the reinforcing ring part externally fitted to a locking cylinder to always hold the strong and close locking of a cap main body with the mouth part of a bottle body and capable of being easily separated and detached from the mouth part of the bottle body after use. SOLUTION: The pour cap is constituted of a cap main body 1, which has a pour port provided to the top part thereof and is constituted so that a thread cylinder 5 is vertically provided to the inner edge of the upper surface of the top wall 3 connected to the inside of the upper end of the locking cylinder 2 connected to the outer periphery of the mouth cylinder of the bottle body through an undercut part, and a lid body 11 wherein a threading cylinder 13 threaded with the outer periphery of the thread cylinder 5 is provided to the peripheral edge of the undersurface of a top plate 12 and an outer cylinder 16 is connected to the outside of the threading cylinder 13 in an upwardly displaceable manner through a displacing connection plate and the lower part of the outer cylinder 16 is formed to the reinforcing ring part 18 externally fitted to the locking cylinder 2. The upward displacement quantity of the outer cylinder 16 is set to such a value that the lower end of the outer cylinder 16 becomes higher than the undercut connection function part of the locking cylinder 2 and the locking strength of the cap main body 1 to the mouth cylinder of the bottle body is set to a degree detachable by a hand to simply change over the presence of the reinforcement of the reinforcing ring part 18 to the locking cylinder 2.

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 assembled to a bottle and can be easily separated from the bottle when it is discarded.

[0002]

As a conventional example of this type of pouring cap,
The one described in Japanese Utility Model Publication No. 6-76106 is known.

The spout cap described in this publication has a spout, and a cap body provided with a plurality of vertical slits in an assembling cylinder to be assembled to a bottle mouth part, and a vertically slidable direction in the assembling cylinder. It is composed of a reinforcing ring that fits on the inside of the cap, and an upper lid that is screwed into the cap body to open and close the spout.When discarding, slide the reinforcing ring upward and remove it from the assembling cylinder. Since the attached tube is easy to open, the spout cap can be easily separated and removed from the bottle mouth.

[0004]

However, in the above-mentioned prior art, there is a possibility that the reinforcing ring may slide and inadvertently come off or be lost from the assembling cylinder when the bottle is in use. Therefore, there is a problem that it may not be possible to maintain a strong and dense assembled state of the cap main body with respect to the bottle mouth portion.

Therefore, the present invention was devised to solve the above-mentioned problems in the prior art, and it is a technical problem to prevent the reinforcing ring portion externally fitted to the assembled cylinder from being unintentionally removed. Therefore, it is an object of the present invention to always maintain a strong and dense assembly of the cap main body with respect to the bottle mouth portion, and to facilitate separation and removal from the bottle mouth portion after use.

[0006]

[Means for Solving the Problems] [Means for Solving the Problems] Of the present invention for solving the above technical problems, the means for carrying out the invention of claim 1 has a spout at the top and is undercut-joined to the outer periphery of the bottle mouth barrel. A top wall is provided continuously inwardly at the upper end of the assembled cylinder, and a cap body having a screw cylinder standing on the inner edge of the upper surface of the top wall is provided. A threaded cylinder that is screwed onto the outer periphery is hung down, and an outer cylinder is continuously arranged outside the threaded cylinder through a displacement connecting plate so that it can be displaced upward.
The lower part of the outer cylinder is fitted on the assembled cylinder of the cap body to have a lid formed on the reinforcing ring portion that suppresses the radial expansion deformation of the assembled cylinder, and the displacement of the outer cylinder of the lid. The amount of upward displacement through the connecting plate is set so that at least the lower end of the outer cylinder is higher than the undercut coupling function part for the bottle mouth tube of the assembly body of the cap body, and the bottle mouth The strength of assembling the cap body to the cylinder is within the range that does not come off due to the water hammer-like force of the content liquid.
It is set so that it can be removed manually.

In a state where the bottle body is in use, when the lid body is screwed and assembled to the cap body, the reinforcing ring portion integrally provided on the lid body is externally fitted to the assembling cylinder of the cap body. Therefore, there is no possibility that the reinforcing ring portion is unintentionally disengaged, and therefore, the strong and tight assembly of the cap body with respect to the bottle mouth portion can always be surely held (see FIG. 1).

When the bottle is discarded after use, when the outer cylinder of the lid is grasped and pulled upward, the displacement connecting plate is elastically deformed and the outer cylinder is displaced upward, whereby the reinforcing ring portion is assembled. Since the undercut coupling function part of the assembling cylinder with respect to the bottle mouth cylinder is exposed by being displaced to the upper end of the attached cylinder (see FIG. 2), if the outer cylinder is directly held and twisted in the vertical direction, Since the assembling cylinder is easily elastically deformed and comes off from the bottle mouth portion, the dispensing cap can be easily separated and removed.

The strength of assembling the cap body to the bottle mouth tube is set so that it does not come off due to the water hammer-like force of the content liquid, so that the cap body may be used while the bottle body is in use. There is no inconvenience such as deviating from the delusion.

According to a second aspect of the present invention, in addition to the structure of the first aspect of the invention, the displacement connecting plate has a tapered ring plate structure which is formed in a downward slope outward and is elastically deformable upward. It is the thing that added.

According to the second aspect of the invention, since the upward displacement of the outer cylinder is obtained by the reversal deformation of the connecting displacement plate, the outer cylinder having the upward displacement is held at that position. Therefore, the separation and removal operation of the spout cap becomes easier.

According to a third aspect of the invention, the setting means for setting the assembling strength of the cap main body to the bottle mouth cylinder in the first aspect of the invention is the wall thickness of the assembling cylinder of the cap main body. .

According to the third aspect of the invention, when the wall thickness of the assembling cylinder is made thin, the amount of flexural deformation in the radial expansion direction due to an external force becomes large, and conversely, when the wall thickness is made thick, the radial direction due to the same external force is expanded. Since the amount of bending deformation of the cap becomes small, by setting this wall thickness properly, it is possible to set the assembling strength of the cap body to the bottle mouth tube within an appropriate range without adding a special structure. To be achieved.

According to a fourth aspect of the present invention, the setting means for setting the assembling strength of the cap main body to the bottle mouth cylinder in the first aspect of the invention is provided with a split groove at least at the lower end portion of the assembling cylinder of the cap main body. It was decided.

In the invention according to claim 4, the assembling strength of the assembling cylinder to the bottle mouth cylinder is weakened by shaping the assembling groove to the assembling cylinder, and the number and arrangement of the dividing grooves. Thereby, the assembling strength of the cap main body to the bottle mouth tube can be set within an appropriate range.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show one embodiment of the present invention, in which a cap body 1 made of a relatively soft synthetic resin is attached to the outer periphery of a bottle mouth portion 20 by undercut coupling, and is formed thinly. Inside the assembled cylinder 2,
A seal cylinder 4 which is tightly fitted into the bottle mouth portion 20 through the top wall 3.
And a threaded cylinder 5 in which a thread is formed on the outer peripheral surface is erected at the inner end of the upper surface of the top wall 3, and the threaded cylinder 5
At the inner edge of the upper surface of the, a spout cylinder 6 that forms a spout is erected.

The bottom surface of the spout is closed by a mouth wall 7 having an inner portion of the breaking groove 8 as a removal wall portion 9. The removal wall portion 9 has a pull ring 10 integrally provided on the upper surface thereof. By pulling it up when the body is opened, it is broken at the breaking groove 8 and removed.

In the lid body 11 made of a relatively hard synthetic resin, a screwing cylinder 13 that is screwed into the screw cylinder 5 is hung down on the peripheral edge of the lower surface of the top plate 12, and the spouting cylinder is provided inside thereof. A stopper cylinder piece 14 that is in close contact with the inner peripheral surface of 6 is hung down, and further, a screw cylinder 13
An outer cylinder 16 is continuously provided on the outer side of the above through a displacement connecting plate 15 formed in the shape of a tapered ring plate that is thin and slopes downward to the outside.

A step portion 17 is provided on the inner peripheral surface of the outer cylinder 16 for contacting the upper surface of the assembled cylinder 2 of the cap body 1.
A portion below the step portion 17 is formed as a reinforcing ring portion 18 which is fitted onto the assembling cylinder 2.

When the outer cylinder 16 is gripped and slid upward, the displacement connecting plate 15 is elastically inverted and displaced upward as shown in FIG. 2, so that the outer cylinder 16 is displaced upward, and thus the reinforcing ring portion. Since 18 is displaced to the upper end which is higher than the undercut coupling function part of the assembling cylinder 2 with respect to the bottle mouth cylinder 20, the assembling cylinder 2 by the reinforcing ring portion 18
Is released, and with this, with the outer cylinder 16 being pulled up, the lid is grasped and the pouring cap is removed from the bottle mouth cylinder in a stripped manner.

FIG. 3 shows another embodiment of the present invention, in which the assembling cylinder 2 is molded with a wall thickness capable of exerting a normal strong assembling force, and the bottle mouth cylinder 20 is also provided. To the lower end of the assembling cylinder 2 having an undercut coupling function portion for the appropriate number (6 in the illustrated embodiment) of the split grooves 1.
9 is provided, and the other structure is the same as that of the embodiment shown in FIG.

In the embodiment shown in FIG. 3, the number of split grooves 19 is
It is possible to set the degree of weakening of the assembling strength of the assembling cylinder 2 with respect to the bottle mouth cylinder substantially accurately by the arrangement relationship, depth, etc. Further, the molding of the split groove 19 can be performed by post-processing. You can go.

[0023]

Since the present invention has the above-mentioned structure, it has the following effects. According to the invention of claim 1, since the reinforcing ring portion externally fitted to the thinly-formed assembling cylinder is integrally provided on the lid body, at the stage of using the bottle body,
There is no fear that the reinforcing ring portion will be unintentionally detached from the assembling cylinder, so that the strong and dense assembling of the cap body with respect to the bottle mouth portion can always be surely maintained.

Further, at the time of disposal after use of the bottle, when the outer cylinder of the lid is grasped and slid upward, the displacement connecting plate is elastically reversed upward and the outer cylinder is displaced upward. Since the reinforcing ring part is displaced to the upper end of the assembling cylinder, if the outer cylinder is held and twisted vertically, the assembling cylinder with limited strength of assembling force against the bottle mouth cylinder is easy. Since it is elastically deformed and comes off from the bottle mouth portion, it is possible to easily, swiftly and smoothly achieve the separation and removal of the spout cap.

According to the second aspect of the invention, since the upward displacement of the outer cylinder is achieved by the inversion deformation of the displacement connecting plate, the outer cylinder displaced upward is held at that position. This makes the operation of separating and removing the spout cap stable and easy.

According to the third aspect of the present invention, the setting of the assembling strength of the cap body with respect to the bottle mouth cylinder is achieved by the thickness of the assembling cylinder, so that no special structure is added. , The setting of assembling strength can be achieved.

In the invention according to claim 4, since the setting of the assembling strength of the cap main body to the bottle mouth cylinder is achieved by shaping the dividing groove to the assembling cylinder, the number of the dividing grooves, the arrangement, Depending on the depth and the like, the assembling strength can be set accurately regardless of the wall thickness of the assembling cylinder.

[Brief description of drawings]

FIG. 1 is a semi-longitudinal front view showing an embodiment of the present invention.

FIG. 2 is a semi-longitudinal sectional front view showing a state of the embodiment shown in FIG. 1 at the time of separation and removal.

FIG. 3 is a semi-longitudinal sectional front view showing another embodiment of the present invention at the time of separation and removal.

[Explanation of symbols]

1; Cap body 2; Assembled cylinder 3; Top wall 4; Seal tube 5; screw cylinder 6; dispensing cylinder 7; Mouth wall 8; Break groove 9; Removal wall 10; Pull ring 11; Lid 12; Top plate 13; Screw cylinder 14; Stopper piece 15; Inverted top plate 16; Outer cylinder 17; Step 18; Reinforcing ring part 19; Split groove 20; Bottle mouth

Continued front page    F term (reference) 3E084 AA04 BA02 BA08 CA01 CB02                       CC03 DA01 DB12 DB13 DB17                       DC03 EA02 FB02 FC01 GA01                       GB01 LA15 LB02 LB07 LD01

Claims (4)

[Claims] 1. A top wall (3) is provided continuously inwardly at the upper end of an assembling cylinder (2) which has a spout at the top and is undercut-joined to the outer periphery of a bottle mouth cylinder (20). A cap body (1) provided with a screw cylinder (5) standing on the inner edge of the upper surface of the top wall (3), and a screw threaded to the outer periphery of the screw cylinder (5) on the lower surface peripheral edge of the top plate (12). Displacement connecting plate (15) is provided outside the screwing cylinder (13) while the coupling cylinder (13) is hung down.
The outer cylinder (16) is continuously connected via the
The lower part of the assembly is fitted onto the assembly cylinder (2), and the assembly cylinder is attached.
(2) consisting of a lid body (11) formed on the reinforcing ring portion (18) for suppressing the diametrical expansion deformation, the amount of upward displacement of the outer cylinder (16) via the displacement connecting plate (15), At least the lower end of the outer cylinder (16) is set to a value higher than the undercut coupling function part for the bottle mouth tube (20) of the assembled tube (2), and the bottle mouth tube (20) The cap strength of the cap body (1) against () is set so that it can be manually removed in a range that does not come off due to the water hammer-like force of the content liquid. 2. The pouring cap according to claim 1, wherein the displacement connecting plate (15) has a tapered ring plate structure which is formed in a downward slope outward and is elastically deformable upward. 3. A cap body (1) for a bottle mouth tube (20).
The pouring cap according to claim 1 or 2, wherein the assembling strength setting means is the wall thickness of the assembling cylinder (2). 4. The cap body (1) for the bottle mouth tube (20)
The pouring cap according to claim 1 or 2, wherein the assembling strength setting means is provided with a split groove (19) at least at a lower end portion of the assembling cylinder (2).