JP2003026204A - Spouting cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spouting cap which can prevent the reinforcing function of a reinforcing ring part to be externally fitted to an assembled cylinder from being impaired, constantly maintain the firm and tight assembly of a cap body with a bottle mouth part, and easily detach the cap from the bottle mouth part in a classifying manner after the use. SOLUTION: The spouting cap comprises a cap body 1 in which a cover cylinder 11 is circumferentially provided outside the assembled cylinder 2 which has a spout on a top thereof and is undercut-coupled with the outer circumference of a bottle mouth cylinder 31 via a flange wall 12 to connect lower ends to each other, and a screw cylinder 5 is erected from an inner edge of an upper side of a top wall 3 continuously provided inward of an upper end of the assembled cylinder 2, and a lid body 14 in which the reinforcing ring part 18 to be externally fitted to the assembled cylinder 2 is continuously provided to the lower part of an outer cylinder 16 suspended from a circumferential edge of a top plate 15 via a breakable circumferential weakening part 19, and a screwing cylinder 22 to be screwed in the outer circumference of the screw cylinder 5 is provided in a suspended manner inside the outer cylinder 16, and the assembly strength of the cap body 1 to the bottle mouth cylinder 31 is set so as to be detached in a plucking-off manner by hand.

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, the reinforcing ring slides due to an external force and is unintentionally detached from the assembly cylinder or lost before or during use of the bottle. Therefore, there is a problem that the strong and dense assembled state of the cap body with respect to the bottle mouth portion may not be maintained.

Therefore, the present invention was devised to solve the above-mentioned problems in the prior art, and it is technically necessary to prevent the reinforcing function of the reinforcing ring portion externally fitted to the assembled cylinder from being impaired. The object is to always reliably and firmly hold the cap body firmly and tightly attached to the bottle mouth portion, and to easily separate and remove the bottle body mouth portion after use. To do.

[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 cap provided with a cover cylinder around the outside of the assembling cylinder via a flange wall connecting the lower ends to each other, and a screw cylinder standing on the inner edge of the upper surface of the top wall continuously connected to the inside of the upper end of the assembling cylinder. Having a main body, a reinforcing ring portion externally fitted to the assembled cylinder of the cap main body is continuously provided below the outer cylinder hung down on the peripheral edge of the top plate through a fragile circumferential weakening portion. The inside of the cap body has a lid with a threaded cylinder that hangs around the outer circumference of the threaded cylinder of the cap body, and the strength of the assembly of the cap body to the bottle mouth tube is determined by the water hammer-like force of the content liquid. It is set so that it can be removed manually without removing it. Was that, in the.

Before the separation processing of the pouring cap, the reinforcing ring portion is fitted on the assembled cylinder of the cap body and the reinforcing ring portion is covered by the cover cylinder, so that the reinforcing ring portion is detached by the external force. As a result, there is no possibility that the reinforcing function of the reinforcing ring portion with respect to the assembling cylinder is impaired, and therefore, the strong and dense assembling of the cap main body with respect to the bottle mouth portion can always be reliably retained.

At the time of separating the spout cap after using the bottle, after removing the lid including the reinforcing ring, the lid with the reinforcing ring separated and removed from the weakened portion is attached to the cap body. If the outer cylinder is held as it is and twisted in the vertical direction, the assembled cylinder is easily elastically deformed and comes off the bottle mouth cylinder, so that 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.

A second aspect of the present invention is the addition of the first aspect of the invention, in which a longitudinal weakening line continuous to the weakened portion is provided across the reinforcing ring portion in the vertical direction.

According to the second aspect of the invention, in separating and removing the reinforcing ring portion at the time of disposal, first, the longitudinal weakening line is broken, and then one broken end of the reinforcing ring is pulled in the circumferential direction to remove the reinforcing ring in the circumferential direction. This is done by breaking the weakened portion (see FIG. 2).

According to a third aspect of the present invention, in addition to the first aspect of the present invention, a locking portion that locks in the screw unscrew direction between the outer peripheral surface of the reinforcing ring portion and the inner peripheral surface of the cover cylinder. Is added to the above.

According to the third aspect of the present invention, the lid body is assembled to the cap body by tapping in a state where the lid body is aligned so that the position along the circumferential direction is substantially the screw limit position. However, at this time, the cap body may be undercut-bonded to the bottle mouth tube in advance.

When the lid is first unscrewed when opening, the locking portion between the reinforcing ring portion and the cover cylinder is locked, so that the weakened portion is broken and the reinforcing ring portion is separated from the lid. Then, it is externally fitted to the assembling cylinder as it is to exert a reinforcing effect at all times, and the presence or absence of the opening can be discriminated by recognizing the presence or absence of breakage of the weakened portion, so that the unauthorized opening prevention function is exerted.

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

In the invention according to claim 4, when the wall thickness of the assembling cylinder is made thin, the amount of bending deformation in the diameter expanding direction due to an external force becomes large, and when it is made thicker, the bending in the diameter expanding direction due to the same external force is made. Since the amount of deformation will be small, by properly setting this thickness, it is possible to set the assembling strength of the cap main body to the bottle mouth cylinder within an appropriate range without adding a special structure. It

According to a fifth aspect of the present invention, the setting means for setting the assembling strength of the cap main body with respect to the bottle mouth tube according to the first aspect is provided with a split groove at least at the lower end portion of the assembling tube. , Things.

In the invention according to the fifth aspect, the assembling strength of the assembling cylinder with respect to the bottle mouth cylinder is weakened by shaping the assembling groove to the assembling cylinder, and the number, arrangement,
The depth allows the assembling strength of the cap body with respect to the bottle mouth tube to be set within an appropriate range.

[0019]

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 a first 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 31 by undercut coupling. Inside the assembled tube 2 that is thin enough to allow manual removal from the mouth tube 31,
Seal tube 4 tightly fitted into the bottle mouth 31 via 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
Inside, the spout cylinder 6 forming the spout is continuously provided via a connecting wall.

The bottom surface of the spout is closed by a mouth wall 7 having a removal wall portion 9 on the inner side of the rupture groove 8. The removal wall portion 9 has a pull ring 10 integrally provided on its upper surface when the pull wall 10 is used. By pulling it up, it is broken and removed at the break groove 8.

A cover cylinder 11 is provided outside the assembling cylinder 2 with a flange wall 12 connecting the lower ends of the assembling cylinder 2, and an insert portion 13 is formed between the cover cylinder 11 and the assembling cylinder 2. ing.

A lid 1 for opening and closing the spout of the cap body 1.
4 is a flange piece 17 on the periphery of the top plate 15 and on the outer periphery of the lower end.
An outer cylinder 16 having a circumference is hung, and below the outer cylinder 16,
A reinforcing ring portion 18 that is inserted into the insertion portion 13 and externally fitted to the assembling cylinder 2 is continuously provided via a thin groove-shaped weakening line 20 that is a weakening portion 19 formed in the circumferential direction.

The reinforcing ring portion 18 has vertical weakening lines 21 continuous from the weakening lines 20 extending from the upper end to the lower end. As shown in FIG. 2, the weakening lines 21 and 20 are both weakened.
The reinforcing ring portion 18 can be separated and removed by breaking.

Inside the outer cylinder 16, a threaded cylinder 22 that is screwed onto the outer circumference of the threaded cylinder 5 of the cap body 1 is provided so as to hang down, and inside thereof, on the inner peripheral surface of the spout cylinder 6. Closed plug piece 23
Is hung down.

FIG. 3 shows a second embodiment of the present invention, in which the cap body 1 has an outer peripheral edge on the upper surface of the top wall 3 thereof.
A plurality of vertical protrusions, each of which has a predetermined height and acts as a stopper, are provided around the inner peripheral surface of the cover cylinder 11 and which forms one of the locking portions 25 that locks the cover body 14 in the screwing-out direction. Article 2
6 is formed.

The lid 14 has a screw cylinder 22 and an outer cylinder 16
A receiving groove 27 is provided on the lower surface of the continuous portion provided between the outer tube 16 and the reinforcing ring portion 18 while the projecting piece 24 abuts to stop the lid 14 at the substantially screwing limit position. Weakened part 1
9 is formed of a plurality of breakable thin connecting pieces 28.

Further, an outer flange 29 located above the cover tube 11 is provided around the upper end of the reinforcing ring portion 18, and a plurality of outer flanges of the engaging portion 25 are formed on the outer peripheral surface of the reinforcing ring portion 18. The vertical groove 30 is formed, and the lid 14
By engaging with the vertical ridge 26 at the first screw unrotation, the connecting piece 28 is broken.

FIG. 4 shows a third 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 a bottle mouth barrel 31 is provided. A proper number of split grooves 2a are provided at the lower end of the assembling cylinder 2 having an undercut coupling function portion for the above. Other configurations are the same as those of the first embodiment.

In the third embodiment, the degree of weakening of the assembling strength of the assembling cylinder 2 with respect to the bottle mouth cylinder 31 is set substantially accurately by the number of the dividing grooves 2a, the positional relationship, the depth and the like. Moreover, since the split groove 2a may be formed by post-processing, it is easy to carry out.

[0030]

Since the present invention has the above-mentioned structure, it has the following effects. In the invention according to claim 1, since the cover body is provided in the cap body to cover the reinforcing ring portion fitted onto the thinly-formed assembling barrel, the bottle body can be used before or during use of the bottle body. There is no risk that the reinforcing function of the reinforcing ring portion will be removed from the assembling cylinder by an external force, and the strong and dense assembling of the cap body with respect to the bottle mouth portion can always be surely maintained. .

In addition, at the time of disposal after using the bottle, after removing the lid including the reinforcing ring portion, the lid having the reinforcing ring portion separated and removed is attached to the cap body, and the outer cylinder is grasped as it is. When twisted in the vertical direction, the assembling cylinder of the cap body is easily elastically deformed and comes off the bottle mouth portion, so that the dispensing cap can be separated and removed easily, quickly and smoothly.

According to the second aspect of the present invention, the reinforcing ring portion can be easily broken and removed from the lid body, so that the separation and removal process of the spout cap is simple and smooth.

According to the third aspect of the present invention, the lid cannot be opened without separating the reinforcing ring portion. Therefore, by knowing the separation of the reinforcing ring portion, the bottle body is already opened. It is possible to recognize the fact that the spout cap is unreliable and the reliable function of preventing unauthorized opening can be exerted. In addition, the reinforcing action of the reinforcing ring part is always working, so the occurrence of unintentional detachment of the pouring cap occurs. Can be reliably prevented.

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 the wall thickness of the assembling cylinder, no special structure is added. , The setting of assembling strength can be achieved.

According to the fifth aspect of the invention, 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 and the arrangement relationship are set. By setting the depth, etc., the assembling strength can be accurately set regardless of the wall thickness of the assembling cylinder.

[Brief description of drawings]

FIG. 1 is a semi-longitudinal sectional view showing a first embodiment of the present invention.

FIG. 2 is a perspective view of a lid in the embodiment shown in FIG.

FIG. 3 is a semi-longitudinal sectional view showing a second embodiment of the present invention.

FIG. 4 is a semi-longitudinal sectional view showing a third embodiment of the present invention.

[Explanation of symbols]

1; Cap body 2; Assembled cylinder 2a; split groove 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; Cover tube 12; Flange wall 13; Insertion part 14; Lid 15; Top plate 16; Outer cylinder 17 ； Flange piece 18; Reinforcing ring part 19; Weakened section 20; weakening line 21; Vertical weakening line 22; Threaded cylinder 23; Plug cylinder piece 24; Projection piece 25; Locking part 26; Vertical ridge 27; Receiving groove 28; Connecting piece 29; Outer flange 30; Vertical groove 31; Bottle mouthpiece

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3E084 AA04 AA12 BA03 CA01 CB01                       CB02 CB04 CC03 DA01 DB01                       DB03 DB12 DB13 DB17 DC03                       FA09 FB01 FC07 GA04 GA08                       GB04 GB08 LA03

Claims (5)

[Claims] 1. A flange wall (12) for connecting the lower ends to the outside of an assembling cylinder (2) which has a spout at the top and is undercut-joined to the outer circumference of a bottle mouth cylinder (31). Cover tube (11)
And a cap body in which a screw cylinder (5) is erected on the inner edge of the upper surface of a top wall (3) that is continuous around the inside of the upper end of the assembly cylinder (2).
(1) and below the outer cylinder (16) suspended from the peripheral edge of the top plate (15), the outer cylinder (16) is fitted onto the assembled cylinder (2) via a fragile circumferential weakening (19). A threaded cylinder in which a reinforcing ring portion (18) is continuously provided, and which is screwed into the outer cylinder (16) on the outer periphery of the threaded cylinder (5).
(22) is hung from the lid (14), and the bottle mouthpiece (3
Assembling strength of the cap body (1) against (1), within the range that does not come off by the water hammer-like force of the content liquid,
A pouring cap that is set so that it can be removed manually by hand. 2. The spout cap according to claim 1, further comprising a weakening line (21) continuous to the weakening portion (19), which extends vertically across the reinforcing ring portion (18). 3. The outer peripheral surface of the reinforcing ring portion (18) and the cover cylinder (1
The pouring cap according to claim 1, further comprising: a locking portion (25) for locking the lid body (14) in an unthreading direction between the inner circumferential surface and the inner peripheral surface of (1). 4. The cap body (1) for the bottle mouth tube (31)
4. The pouring cap according to claim 1, 2 or 3, wherein the assembling strength setting means is the wall thickness of the assembling cylinder (2). 5. The cap body (1) for the bottle mouth tube (31)
4. The spout cap according to claim 1, 2 or 3, wherein the assembling strength setting means is provided with a split groove (2a) at least at a lower end portion of the assembling cylinder (2).