JPH11189263A - Container for liquid discharge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent remaining liquid left on an inward flange shaped top face of a discharge tube bottom end formed by a bottom wall aperture of a discharge cap with a pull-ring from leaking by being pushed out along the inner face of the discharge tube owing to high pressure gas in the container body in unscrewing a cap. SOLUTION: The bottom inner face of a discharge tube 6 of a discharge cap with a pull-ring is formed in a small diameter perpendicular face 12 and the intermediate inner face of the same in a medium diameter perpendicular face 13. On the peripheral wall 4 outer face of the discharge cap, the outer peripheral wall 22 of a cap is screwed. From this cap, an intermediate peripheral wall 23 is suspended airtightly contacting the medium diameter perpendicular face and an inner peripheral face 27 downward airtightly contacting the small diameter perpendicular face 12. The inner peripheral wall 27 is so made that the same parts from the small diameter perpendicular face quickly in unscrewing the cap, and the upstream part of a ventilation passage 36 communicating with an exhaust vent 24 provided in the outer peripheral wall or in the cap top wall is provided between the inner peripheral wall 27 and the intermediate peripheral wall 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a liquid dispensing container.

[0002]

2. Description of the Related Art As disclosed in Japanese Utility Model Application Laid-Open No. 7-6162, there is known a liquid spouting container in which a spout with a pull ring is fitted to the neck of a container body and a cap is screwed to the spout. Have been. The spout with a pull ring has a bottomed spout cylinder, a thin wall for break is provided around the bottom wall of the cylinder, and a bottom wall portion surrounded by the thin line is used as a plate for removal, and The removal plate portion is ruptured and removed by pulling up the pull ring upward, and the hole formed by the removal mark is provided as a liquid discharge hole so that the liquid can be discharged. The dispensing cylinder part expands upward and outward, and the upper end is curved downward and outward, so that when the cap is screwed, the inner peripheral wall hanging down from the cap top wall is pressed against the inner surface of the dispensing cylinder in a watertight manner. Provided.

[0003]

The thin wire for breaking formed in the bottom wall of the pouring cylinder is formed by the liquid pouring from the pouring hole and the outside air flowing into the container in place of the pouring liquid. In order to perform the replacement well, the pouring hole is provided so as to have an elliptical shape or a bar shape. After the pouring hole is opened, the outer peripheral portion of the bottom wall is left at the lower end of the pouring cylinder in an inward flange shape. . Then, after the liquid is poured, the liquid attached to the inner surface of the pouring cylinder remains on the upper surface of the outer peripheral portion of the bottom wall as residual liquid.

For this reason, when the cap is removed in a state where the pressure inside the container is high due to a temperature change or a body elastic deformation caused by holding the body of the container, when the lower end of the inner peripheral wall of the cap moves upward from the inner surface of the pouring cylinder. At the same time, the high-pressure air in the container is released through the threaded portion between the spout and the outer peripheral wall of the cap. At this time, the liquid remaining on the upper surface of the inward flange-shaped portion was pushed up along the inner surface of the pouring cylinder by the high-pressure air, and leaked through the threaded portion. The present invention is provided so as to prevent the above-described liquid leakage.

[0005]

Means for Solving the Problems As a first means, a container body 1 for erecting a mouth and neck portion 2 and a mounting tubular portion 5 attached to a lower end portion of a peripheral wall 4 are fitted to the mouth and neck portion, Through an inward flange to the upper end of the peripheral wall, a pouring cylinder 6 that expands the upper part upward and outward and curves the upper end downward and outward is attached.
A pouring plug 3 that raises a support plate 10 with a pull ring 9 from the plate portion as a removing plate portion 8 from a bottom wall portion surrounded by a thin wire 7 for break provided around the bottom wall of the pouring cylinder leaving an outer peripheral portion 11. And a cap 20 in which the outer peripheral wall 22 is screwed to the outer surface of the peripheral wall 4 and the inner peripheral wall 27 is airtightly fitted to the inner surface of the discharge cylinder. The small diameter vertical surface
12, the inner surface of the intermediate part is formed on a medium-diameter vertical surface 13, the upper inner surface is formed on a tapered inner surface 14 that expands upward and outward, and an intermediate wall 23 is vertically provided between the inner and outer peripheral walls of the cap. The second and first seal contact surfaces 31 and 35 are provided by hermetically pressing the lower outer surface of the middle peripheral wall to the vertical middle surface 13 and the outer lower surface of the inner peripheral wall to the small vertical surface 12 in a gastight manner. The distance from the lower end of the seal contact surface 31 to the upper end of the medium-diameter vertical surface is set longer than the distance from the lower end of the first seal contact surface to the upper end of the small-diameter vertical surface. In addition, an exhaust hole 24 is formed in the top wall 21 or the outer peripheral wall 22 to communicate the exhaust hole with the space inside the discharge cylinder below the first seal contact surface via the first seal contact surface. The upstream part of the air passage 36
It was provided between the inner peripheral wall 27 and the middle peripheral wall 23.

As a second means, the above-mentioned first means is provided and the cap 20 is provided with a first cap body 25 from which the outer peripheral wall 22 hangs from the outer periphery of the top wall 21 and the inner peripheral wall 23 hangs from the lower surface of the top wall. A first auxiliary cap body having an upper part fitted from the outer periphery of the top plate 26 to the inner surface of the middle peripheral wall to hang down the inner peripheral wall 27;
And an exhaust hole 24 formed in the top wall portion above the top plate, and between the inner peripheral wall 27 and the middle peripheral wall 23 and between the upper surface of the first auxiliary cap body and the top wall 21 of the first cap main body. An air passage 36 communicating with the exhaust hole was provided.

As a third means, the above-mentioned first means is provided and the cap 20 is provided with an outer peripheral wall 22 from the outer periphery of the top wall 21, a central cylinder 52 from the center of the top wall, and a cap between the outer peripheral wall and the central cylinder. From the top wall portion, the middle peripheral wall 23 is attached to the second cap body 51 which hangs down, and the outer periphery of the bottom plate 42 is fitted to the outer surface of the central cylinder 52 to erect the reinforcing cylinder 43, and the outer peripheral flange 44 extends from the upper end of the cylinder through the outward flange 44. And a second auxiliary cap body 41 which is fitted to the inner surface of the middle peripheral wall and has the inner peripheral wall 27 hanging therefrom.
24, and between the inner peripheral wall 27 and the intermediate peripheral wall 23, between the outward flange 44 and the top wall portion above the flange, between the reinforcing cylinder 43 and the central cylinder 52, and further, the lower surface of the central cylinder. And bottom plate 42
A ventilation passage 36 communicating with the exhaust hole is provided between the air passages.

As a fourth means, the above-described first means is provided, and the cap 20 is suspended from the upper end of the outer peripheral wall 22 via the inward flange through the middle peripheral wall 23, and the first fitting cylinder is placed from the upper surface of the inward flange. The third cap body 63 standing upright 62 and the second fitting cylinder 64 fitted to the outer surface of the first fitting cylinder 62 are attached to the top wall 21.
A third auxiliary cap body 65 that hangs down from the outer circumference and hangs down from the top wall 21 to the inner circumference wall 27 is formed. One or both of the upper end face of the outer circumference wall 22 and the lower end face of the second fitting cylinder 64 are formed. The exhaust hole 24 is formed by a groove formed in the upper surface of the third cap main body and the inner surface of the third auxiliary cap located between the inner peripheral wall 27 and the intermediate peripheral wall 23 and between the inner peripheral wall 27 and the exhaust hole 24. An air passage 36 was formed between the portion.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the embodiment shown in FIGS. 1 and 2 will be described. The container body has a body part that elastically deforms, but may have a body part that does not elastically deform.

Reference numeral 3 denotes a spout, which is provided on both the inside and outside of the mouth and neck.
An inner / outer double tubular mounting tube portion 5 attached to the lower end portion of the peripheral wall 4 is fitted, and the upper portion is directed upward and outward and the upper end portion is directed downward through an inward flange to the upper end of the peripheral wall. A dispensing cylinder 6 that curves and expands is provided. The dispensing cylinder has a bottom, a thin wall 7 for breaking is provided around the bottom wall, a bottom wall portion surrounded by the thin line is formed as a removing plate portion 8, and a part of an outer edge of the plate portion is formed. The support plate 10 with the pull ring 9 is erected. Since the thin wire is provided around the bottom wall in an elliptical shape or the like, the outer peripheral portion 11 of the bottom wall outside the thin wire remains on the inner surface of the lower end of the pouring cylinder 6 in an inward flange shape. The dispensing cylinder 6 has a lower inner surface with a small-diameter vertical surface 12.
In addition, the inner surface of the intermediate portion is formed into a medium-diameter vertical surface 13, the upper inner surface is formed into a tapered inner surface 14 which expands upward and outward, and the upper end further expands downward and outward. The pouring tap is made of a synthetic resin, and the thin wire 7 is broken by pulling up the pull ring 9 to allow the trace of the removing plate to open the pouring hole 15 as shown in FIG.

In the illustrated example, the cap 20 has an outer peripheral wall 22 extending from the outer periphery of the top wall 21 and an intermediate peripheral wall 23 extending from the lower surface of the top wall, and an exhaust hole 24 is formed in a top wall portion surrounded by the intermediate peripheral wall. A first cap main body 25 and a first auxiliary cap body 28 having an upper part fitted from the outer periphery of the top plate 26 to the inner surface of the middle peripheral wall and hanging down the inner peripheral wall 27 are formed.

In the first cap body, the outer peripheral wall 22 is screwed to the outer surface of the spout plug peripheral wall as a female screw cylinder, and the middle peripheral wall 23 has an upper half portion with a small inner diameter portion and engages with the lower inner surface of the small inner diameter portion. Ridge
29 are provided, and a plurality of grooves 30 are provided vertically on the inner surface of the small inner diameter portion. The outer peripheral surface of the middle peripheral wall is water-tightly pressed against the inner surface of the middle diameter vertical surface 13 of the discharge cylinder 6 to form a second seal contact surface 31.

The first auxiliary cap body 28 has a lateral groove 32 formed in the upper outer surface of the inner peripheral wall 27 so that the engaging ridge 29 of the middle peripheral wall 23 is fitted thereto. A groove 33 is provided, and the top plate 26 is provided horizontally below the upper end of the inner peripheral wall. Further, an engaging ridge 34 is provided around the lower end outer surface of the inner peripheral wall, and the outer surface of the engaging ridge is pressed against the inner upper surface of the small-diameter vertical surface 12 in a watertight manner to form a first seal contact surface 35. A gap is formed between the inner peripheral wall 27 and the lower half of the middle peripheral wall 23, and the gap and the grooves 30, 33 are formed.
And a gap between the top plate 26 and the top wall 21 is an exhaust hole formed in the top wall.
A ventilation path 36 to 24 is formed.

As shown in FIG. 2, when the cap 20 is screwed up, the inner peripheral wall 27 and the intermediate peripheral wall 23
34 deviates from the small-diameter vertical surface 12 and the middle-diameter vertical surface
It is provided so that the middle peripheral wall 23 is detached from 13.

In the illustrated example, the cap 20 is removed from the closed state of the container shown in FIG. 1, and the removing plate 8 is removed by pulling up the pull ring to discharge the liquid. After the liquid is poured, the cap is screwed.When the liquid is poured again, if the inside of the container is pressurized due to an increase in air temperature or elastic deformation of the body by the body grip, the cap 20 is screwed up. First, the inner wall
When the 27 separates from the small-diameter vertical surface 12, the residual liquid 37 pooled on the outer peripheral portion of the bottom wall is removed by removing the first seal contact surface 35 to form a ventilation passage 36.
Is pushed up along the inner surface of the injection cylinder 6 by the high-pressure air that is about to be blown through, but at this time, since the middle peripheral wall 23 is still in contact with the medium-diameter vertical surface 13, the lower end surface of the middle peripheral wall prevents the rise. Only high-pressure air passes through the ventilation passage 36
Spouts from 24. Subsequently, the middle peripheral wall 23 separates from the medium-diameter vertical surface 13, but at this time, since the high-pressure state in the container body has already been eliminated by the ejection from the exhaust hole, the adhesion remaining on the medium-diameter vertical surface 13 is The liquid flows down by its own weight.

FIGS. 3 and 4 show a second embodiment. This embodiment mainly increases the rigidity of the auxiliary cap body in the first embodiment, thereby preventing the occurrence of torsion which is likely to occur when the auxiliary cap body is fitted into the cap body, and thereby detaching the lower portion of the inner peripheral wall from the upper end of the small-diameter vertical surface 12. Are performed simultaneously over the entire circumference of the upper end of the small-diameter vertical surface, that is, without deviation. For this reason, the second auxiliary cap body 41 is
The reinforcing cylinder 43 is erected from the outer periphery of the cylinder 42, and the inner peripheral wall 27 is suspended from the upper end of the cylinder via an outward flange 44. In the illustrated example, the guide tube 45 is further erected inside the reinforcing tube 43. Further, the second cap body 51 is provided with the outer peripheral wall 22 provided in the same manner as in the first embodiment.
In addition to the middle peripheral wall 23, a central tube 52 is hung from the center of the top wall, an exhaust hole 24 is formed in the center of the top wall, and a short tube is hung from the outer edge below the hole. The reinforcing cylinder 43 is provided on the outer surface of the central cylinder 52, and the middle peripheral wall 23
The inner peripheral wall 27 is fitted on the inner surface, respectively, between the inner peripheral wall 27 and the middle peripheral wall 23, between the outward flange 44 and the top wall 21, the central cylinder.
52 and the reinforcing cylinder 43, between the lower end of the central cylinder 52 and the bottom plate 42, between the guide cylinder 45 and the central cylinder 52, between the upper end of the guide cylinder 45 and the top wall 21, and above the short cylinder and the guide cylinder 45. A ventilation path 36 is formed between them. Other parts are the same as those in the first embodiment, and the same reference numerals are given and the description is omitted.

FIGS. 5 and 6 show a third embodiment. This embodiment shows a modification of the cap. In this embodiment, the cap is suspended from the upper end of the outer peripheral wall 22 via the inward flange 61 via the inward flange 61, and the first
A third cap main body 63 erecting the fitting tube 62 and a second fitting tube 64 tightly fitted to the outer surface of the first fitting tube are attached from the outer periphery of the top wall 21 and from the top wall 21 to the inner peripheral wall 27. , The third hanging each
The exhaust hole 24 is formed by a groove formed in one or both of the upper end surface of the outer peripheral wall 22 and the lower end surface of the second fitting cylinder 64. Between the surrounding wall 23,
A ventilation path 36 is provided between the upper surface of the third cap body and the inner surface of the third auxiliary cap, which is located between the inner peripheral wall and the exhaust hole.
Is provided. In the illustrated example, the upper part of the middle peripheral wall 23 is formed into a tapered portion upward and outward, and is further erected to be connected to the inner edge of the inward flange 61, a short cylinder is erected from the inner edge of the inward flange, and the third auxiliary cap body The second guide cylinder is suspended from the top wall with a small gap between the second guide cylinder and the inner surface of the short cylinder.

The first and second containers are used for the container and the spout.
This is the same as the embodiment, and the description is omitted by attaching the same reference numerals. The operation is the same as that of the first embodiment in both the second and third embodiments. The spout and cap are formed of a synthetic resin material in each embodiment.

[0019]

The present invention has the above-mentioned construction, and in which a spout with a pull ring is fitted to the mouth and neck of the container body and a cap is screwed to the spout, The lower inner surface of the pouring cylinder 6 of the tap is formed on the small-diameter vertical surface 12, the middle inner surface is formed on the middle-diameter vertical surface 13, and the upper inner surface is formed on the tapered inner surface expanding upward and outward, respectively. The lower outer surface of the inner peripheral wall 27 hanging down from the lower surface is pressed against the small-diameter vertical surface 12, and the lower outer surface of the inner peripheral wall 27 is pressed against the medium-diameter vertical surface 13, respectively.
Since the seal contact surfaces 35 and 31 are formed, and the distance from the lower end of the second seal contact surface to the upper end of the middle diameter vertical surface is set longer than the distance from the lower end of the first seal contact surface to the upper end of the small diameter vertical surface 12, Alternatively, the upstream portion of the air passage 36 that communicates the exhaust hole provided in the outer peripheral wall with the space inside the injection cylinder below the first seal contact surface 35 through the first seal contact surface is formed by the inner peripheral wall 27 and the middle peripheral wall 23. After opening the bottom wall of the pouring cylinder, when the cap is unscrewed with residual liquid remaining on the inner surface of the lower part of the pouring cylinder and high pressure inside the container, the second sealing contact Before the surface 31 is eliminated, only the high-pressure air blows out through the air passage 36, and therefore, even if the second seal contact surface 31 is subsequently released, the high-pressure state in the container body has already been eliminated at this time. In addition, it is possible to prevent the residual liquid from further rising along the inner surface of the discharge cylinder and leaking.

If the diameter difference between the small-diameter vertical surface 12 and the medium-diameter vertical surface 13 is small, it is difficult to increase the gap between the middle peripheral wall 23 and the inner peripheral wall 27, and the gap is reduced. If it is small, it will be difficult to integrally mold the cap, but the outer peripheral wall
By fitting a first auxiliary cap body 28 having an inner peripheral wall 27 into a first cap main body 25 having a 22 and an intermediate peripheral wall 23, the gap between the intermediate peripheral wall 23 and the inner peripheral wall 27 is reduced, and It becomes easy to form an upstream portion of the ventilation path between the two peripheral walls.

From the second cap body 51 to the outer peripheral wall 22 and the intermediate peripheral wall
The second auxiliary cap body 41, which hangs down the 23 and the central cylinder 52, and is fitted into the second cap body, is fitted from the outer periphery of the bottom plate 42 to the outer surface of the central cylinder, and the reinforcing cylinder 43 is erected. By fitting the inner peripheral wall 27 down from the upper end via an outward flange and to the inner surface of the intermediate peripheral wall 23, the rigidity of the second auxiliary cap body 41 is increased, and the inner peripheral wall 27 is twisted with respect to the intermediate peripheral wall 23. In addition, it is possible to provide the first seal contact surface 35 at the time of unscrewing of the cap so that the first seal contact surface 35 can be eliminated simultaneously on the entire outer peripheral surface of the inner peripheral wall, so that the high pressure state in the container can be eliminated in a short time. I can do it.

The cap 20 is fixed to the outer peripheral wall 22, the middle peripheral wall 23 and the first
The third cap body 63 having the fitting cylinder 62 and the third auxiliary cap body 65 having the inner peripheral wall 27 and the second fitting cylinder 64 are used to move the second fitting cylinder 64 to the outer surface of the first fitting cylinder 62. Is formed, it is easy to provide a gap between the middle peripheral wall 23 and the inner peripheral wall 27 in accordance with the difference in diameter between the medium-diameter vertical surface 13 and the small-diameter vertical surface 12. 22 By forming the exhaust hole 24 with a groove formed in one or both of the upper end surface and the lower end surface of the second fitting cylinder, even if a plurality of small exhaust holes are provided, the appearance of the cap is impaired. And it can be prevented from being blocked.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of the container of the present invention.

FIG. 2 is a sectional view when the container in FIG. 1 is used.

FIG. 3 is a sectional view of a main part of a container shown in a second embodiment.

FIG. 4 is a sectional view when the container is used.

FIG. 5 is a sectional view of a main part of a container shown in a third embodiment.

FIG. 6 is a cross-sectional view when the container is used.

[Explanation of symbols]

3 ... pouring plug 6 ... pouring cylinder 12 ... small diameter vertical surface 13 ... medium diameter vertical surface 20 ... cap 23 ... middle peripheral wall 24 ... exhaust hole 27 ... inner peripheral wall 36 ... ventilation path

Claims (4)

[Claims] 1. A container body 1 standing up and down a mouth and neck portion, and a mounting tube portion 5 attached to a lower end portion of a peripheral wall 4 is fitted to the mouth and neck portion via an inward flange to an upper end portion of the peripheral wall. A thin wall thin wire for breakage, which is provided with a pouring cylinder 6 whose upper portion is expanded upward and outward and whose upper end is curved downward and outer peripheral portion 11 is left on the bottom wall of the pouring cylinder. The bottom wall portion 7 is surrounded by a removal plate 8, and a spout 3 from which a support plate 10 with a pull ring 9 is erected. The outer wall 22 is screwed to the outer surface of the peripheral wall 4.
27, a liquid injection container having a cap 20 airtightly fitted to the inner surface of the injection cylinder, the lower inner surface of the injection tube 6 on the small-diameter vertical surface 12, the middle inner surface on the medium-diameter vertical surface 13, The upper inner surface is formed on the tapered inner surface 14 expanding upward and outward, respectively, and an intermediate wall 23 is vertically provided between the inner and outer peripheral walls of the cap, and the lower outer surface of the intermediate peripheral wall is turned into the medium diameter vertical surface 13. In addition, the lower outer surface of the inner peripheral wall is hermetically pressed against the small-diameter vertical surface 12 to provide the second and first seal contact surfaces 31 and 35, and the second seal contact surface 31.
The distance from the lower end to the upper end of the medium-diameter vertical surface is provided longer than the distance from the lower end of the first seal contact surface to the upper end of the small-diameter vertical surface, so that the inner peripheral wall 27 can be quickly separated from the inner surface of the ejection cylinder when the cap is unscrewed, Further, an exhaust hole 24 is formed in the top wall 21 or the outer peripheral wall 22, and a ventilation path 36 for communicating the exhaust hole with the space in the injection cylinder below the first seal contact surface through the first seal contact surface. Upstream part, inner peripheral wall 27
Characterized in that it is provided between the inner peripheral wall 23 and the inner peripheral wall 23. 2. The cap 20 has an outer peripheral wall 22 extending from the outer periphery of the top wall 21 and an inner peripheral wall 23 extending from the lower surface of the top wall.
Are formed by a first cap main body 25 which respectively hangs down, and a first auxiliary cap body 28 which hangs an upper portion from the outer periphery of the top plate 26 to the inner surface of the middle peripheral wall and hangs down the inner peripheral wall 27. Exhaust holes 24 are drilled in the wall and the inner peripheral wall
Vent passages communicating with the exhaust holes between the inner peripheral wall 27 and the inner peripheral wall 23 and between the upper surface of the first auxiliary cap body and the top wall 21 of the first cap main body.
The liquid dispensing container according to claim 1, wherein 36 is provided. 3. The cap 20 is provided with an outer peripheral wall 22 from the outer periphery of the top wall 21 and a central cylinder 52 from the center of the top wall.
However, the middle wall 23 from the top wall portion between the outer wall and the central cylinder,
The second cap body 51 which is respectively suspended, and the reinforcing cylinder 43 is erected from the outer periphery of the bottom plate 42 to the outer surface of the central cylinder 52, and is erected from the upper end of the cylinder via the outward flange 44 and to the inner peripheral wall. And a second auxiliary cap body 41 that hangs down the inner peripheral wall 27, an exhaust hole 24 is formed in the center of the top wall 21, an outward flange 44 and an outer flange 44 are provided between the inner peripheral wall 27 and the middle peripheral wall 23. An air passage communicating with the exhaust hole between the top wall portion above the flange, between the reinforcing cylinder 43 and the central cylinder 52, and between the lower surface of the central cylinder and the bottom plate 42;
The liquid dispensing container according to claim 1, wherein 36 is provided. 4. A cap 20 comprising: a third cap main body 63 that hangs down the middle peripheral wall 23 from the upper end of the outer peripheral wall 22 via an inward flange and raises the first fitting cylinder 62 from the upper surface of the inward flange; The top wall of the second fitting cylinder 64 fitted to the outer surface of the first fitting cylinder 62
A third auxiliary cap body 65 that hangs down from the outer periphery of the inner wall 21 and that hangs down the inner wall 27 from the top wall 21 is formed by one of the upper end surface of the outer peripheral wall 22 and the lower end surface of the second fitting cylinder 64. An exhaust hole 24 is formed by grooves formed on both sides, and an upper surface portion of the third cap body located between the inner peripheral wall 27 and the middle peripheral wall 23 and between the inner peripheral wall 27 and the exhaust hole 24 and a third auxiliary cap body. The liquid discharging container according to claim 1, wherein a ventilation path (36) is formed between the container and the surface portion.