JPH0344686Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention stores an internal solution and is attached to a metal tube container or a synthetic resin container with a closed mouth, and the closed mouth is opened. The present invention also relates to an improvement in a cap with a nozzle for a closed container that allows the internal solution to be simply and easily poured out from the nozzle by opening the cap.

[Conventional technology]

It is attached to the mouth of a conventionally known container that stores a liquid inside and has a closed mouth, and the mouth that is closed by tightening is opened and the solution inside is poured out from a nozzle. For example, as shown in FIG.
A male thread 22 is provided on the outer periphery of the cap 1, and a cap 23 with a nozzle is removably attached thereto.

This nozzle-equipped cap 23 is connected to the male thread 22.
A female thread 24 that is screwed into the cap 23 is carved into the inner circumferential surface, a nozzle 25 is protruded from the center of the upper surface, and a downwardly tapered protrusion 26 is provided at the center of the interior of the cap 23. A right cylindrical liquid pouring hole 27 is formed through the central axis.

Furthermore, the mouth portion 21 of the container body 20 has a thin film-like closing wall 28 stretched over the upper end to hold the container body 20 in a sealed state after storing the internal solution.
By tightening the nozzle cap 23,
The closing wall 28 is opened by the protrusion 26, and at the same time, the liquid can be poured out from the through hole 27 for pouring out the liquid.

In addition, reference numeral 29 in FIG. 5, which shows a conventional example, is a thin-walled skirt for temporary prevention of opening, which is integrally provided at the bottom of the nozzle-equipped cap 23, and prevents an inadvertent closing wall caused by the protrusion 26 during shipping or over-the-counter sales. 28 are prevented from being opened. Further, 30 indicates a protective cap that closes the tip of the nozzle 25.

[Problem that the invention attempts to solve]

A cap with a nozzle having such a structure has the advantage that it can be opened simply by tightening the cap 23 and the solution inside can be used immediately.
As shown in the figure, the protrusion 26 formed at 3 has a non-sharp tip, and a through hole 27 for liquid pouring is opened in the center of the protrusion 26.

Therefore, when the protrusion 26 is opened, the closing wall 2
Since the part that actually comes into contact with the hole 27 is just the flat ring surface at the periphery of the through hole 27, the unsealing method has to apply so-called surface pressure to break it, and as a result, it must be tightened quite strongly. Otherwise, it will be difficult to open.

In addition, since the nozzle cap 23 is usually made of synthetic resin material, the opening edge cannot withstand the force of tightening, and is easily deformed or destroyed, making it difficult to break the seal properly. There were major practical drawbacks.

On the other hand, in the case of so-called metal tubes in which the container body, mouth closing wall, etc. are made of metal such as aluminum, the closing wall is formed so that it gradually becomes thicker from the center toward the periphery. In order to be
If the tip of the protrusion that breaks the seal of the closing wall is just a flat ring surface, the ring surface presses against this thick wall, requiring a stronger force to unseal the closing wall.

Furthermore, in conventional caps with nozzles,
Only one through hole 27 for liquid pouring is provided in the center of the protrusion 26, and if the closure wall 28 is ruptured by surface pressure due to such a protrusion 26, broken pieces are likely to be generated when the closure wall 28 is unsealed. This has a fatal drawback as a nozzle-equipped cap for a closed container, as the broken pieces tend to block the liquid pouring hole 27 and stop or reduce the amount of liquid poured.

In view of the many problems of conventional caps with nozzles, this idea was developed to create a closed container with a nozzle that allows the closing wall to be opened extremely easily and the solution inside to be poured out smoothly. The aim is to provide a cap.

[Means for solving problems]

In order to solve the above-mentioned problems, the cap with a nozzle of this invention is screwed onto the outer periphery of the mouth of a container body which contains a solution and has a closed mouth. In a cap with a nozzle that is configured to be opened, a cone-shaped piercing portion with a sharp tip is provided in the center of the interior of the cap with a nozzle, and a cone-shaped piercing portion with a sharp tip is provided to pierce the opening, and a nozzle is provided on a peripheral wall of the piercing portion. A plurality of through holes for liquid flow communicating with the inner through hole are formed such that the sum of the areas of the through holes is larger than the cross-sectional area of the nozzle inner through hole.

In this idea, a conical shape with a pointed tip means
Specifically, the piercing portion is a cone or a pyramid, and a plurality of through holes communicating with the nozzle internal passage hole are formed in the peripheral wall of the piercing portion.

When these through holes are formed in the peripheral wall, they are provided so that the total area of the holes is larger than the cross-sectional area of the through holes.

In addition, in the case where the through hole formed in the nozzle is a through hole whose diameter gradually decreases in a tapered shape toward the tip side of the nozzle, the above-mentioned cross-sectional area is:
Refers to the cross-sectional area of the maximum diameter portion of such a tapered and reduced diameter nozzle internal passage hole.

[Effect]

The nozzle cap 1 of this invention is used by attaching it to a pre-molded container body containing an internal solution with the mouth closed.When using it, the nozzle cap 1 is tightened and the nozzle cap 1 is closed.
The mouth part 11 is opened by the tip part 4 of the piercing part 3 provided inside.
Since the piercing part 4 has a conical shape with a sharp tip, piercing the closing wall 13 can be easily and easily performed with a light force. be able to.

Furthermore, the total area of the plurality of through holes 5, 5, . There is no decrease in the liquid flow to the nozzle internal passage hole 7 due to the liquid resistance generated in the hole 5 portion.

〔Example〕

An embodiment of the nozzle-equipped cap of this invention will be described below with reference to the accompanying drawings.

The nozzle-equipped cap 1 of this invention is molded from a hard synthetic resin material, and has a female thread 2 cut into the inner peripheral surface of the cap and a nozzle 6 protruding from the center of the upper surface.

The nozzle 6 has a central longitudinal axis extending through the nozzle 6;
A through hole 7 for liquid pouring is provided with the same diameter, and at the center of the interior of the cap 1 with a nozzle,
A conical piercing portion 3 is protruded with the sharp end facing downward, and a slit-shaped through hole for liquid flow communicating with the through hole 7 of the nozzle 6 is provided on the peripheral wall of the piercing portion 3. 5 are evenly distributed.

Four through holes 5 formed in the peripheral wall of this piercing portion 3,
5... are provided so that the total area of the holes is larger than the cross-sectional area of the through holes 7 in the nozzle 6.

A cap with a nozzle 1 having such a structure has a female thread 2 formed on the inner peripheral surface, a male thread 12 provided on the outer periphery of the opening of the container body 10, and a tip 4 of a piercing portion 3 protruding into the cap. The opening of the container body 10 is screwed together to the extent that it does not come into contact with the closing wall 13 that closes it, and a protective cap 8 is fitted to the tip of the nozzle 6.

Therefore, when using the cap with nozzle 1
When the container body 10 is tightened, the tip 4 of the piercing part 3 breaks the center of the closing wall 13, so that the closing wall 13 can be opened easily, and by tilting the container body 10, the sealed container can be sealed. The solution flows out into the through hole 7 of the nozzle 6 through a plurality of through holes 5 formed in the peripheral wall of the piercing portion 3 .

The protective cap 8 shown in FIG. 1b is provided with a protrusion 9 at its inner abutting part for passing through the tip of the through hole 7 in the nozzle 6 and closing the through hole 7, so that the use of the internal solution is interrupted. This ensures the prevention of liquid leakage and isolation from the outside air.

[Effect of idea]

The cap with a nozzle according to this invention has a plurality of through holes in the peripheral wall of the conical piercing part so as to communicate with the through holes in the nozzle, and the total area of each through hole is the cross section of the through hole formed in the nozzle. It is provided so that it is larger than the area.

Therefore, when opening the closing wall that closes the mouth of the container body, the sharp tip of the piercing portion first bursts the center of the closing wall, making it possible to pierce and unseal the seal at the so-called point. Compared to conventional caps with nozzles, which are opened by breaking due to surface pressure on the surface including the annular edge of the tip of the protrusion, the closing wall formed at the mouth of the container body can be opened with a small amount of force, and more easily and easily. It can be executed reliably.

Moreover, when opening the closing wall, the seal can be opened with almost no damage to the tip of the piercing part, and there is no breakage caused by the closing wall when piercing, and the internal solution can be used immediately after opening. .

Further, in the cap with a nozzle of this invention, when forming a plurality of through holes in the piercing portion that communicate with the through holes of the nozzle, the total area of each through hole is larger than the cross-sectional area of the through holes. Since we have set up
There is no risk of liquid resistance occurring in the through-hole area,
A predetermined amount of liquid can be secured and smoothly poured out from the nozzle internal through hole.

Furthermore, since the cap with a nozzle of this invention has the tip of the piercing part in the center, it is not only possible to have the opening of the container body formed with a thin film-like closing wall, but also to have a thin center part of the closing wall due to molding. It has great practical advantages, such as its excellent effectiveness when applied to closed containers such as metal tubes formed in

[Brief explanation of the drawing]

The drawings show an embodiment of the cap with a nozzle of this invention, and FIG. 1 is a longitudinal sectional view of the cap with a nozzle and a protective cap used for the nozzle of the cap with a nozzle, where a is the cap with a nozzle, and b is a protective cap. Show cap. Figure 2 is a bottom view of the cap with a nozzle, Figure 3 is a perspective view of the cap with a nozzle, and Figure 4 is a bottom view of the cap with a nozzle.
The figure is a vertical cross-sectional view showing the state attached to the container body.
FIG. 5 is a longitudinal section of a conventional cap with a nozzle. 1...Cap with nozzle, 3...Piercing part, 4...
...Tip, 5...Through hole, 6...Nozzle, 7...Through hole, 8...Protection cap, 10...Container body, 1
1... Mouth part, 13... Closing wall.

Claims (1)

[Scope of utility model registration request] In a cap with a nozzle, which is configured to be screwed onto the outer periphery of the mouth of a container body having a closed mouth while containing liquid, and to open the closed mouth by tightening, the inside of the cap with a nozzle is A cone-shaped piercing part with a sharp tip is provided in the center to pierce the opening, and a plurality of through holes for liquid circulation are provided in the peripheral wall of the piercing part to communicate with the nozzle internal passage hole. 1. A nozzle-equipped cap for a closed container, characterized in that the total area of the through-holes is formed to be larger than the cross-sectional area of the nozzle internal through-holes.