JPH0344679Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a liquid dispensing cap, and more particularly to a liquid dispensing cap equipped with a check valve.

[Conventional technology]

Conventionally, as this type of liquid pouring cap, one described in Japanese Utility Model Publication No. 56-51008 is known.

As shown in FIG. 5, the inner cap 31 screwed onto the neck part 2 of the container 1 is fitted into the cap main body 3, and the cap main body 3 and the inner cap 3 are connected together.
A spout 11 penetrating through the spout 11 is formed, and a space 32 is formed between the inner cap 31 and the cap body 3 in the spout 11 portion, and a coil spring 33 is applied to the inside of this space 32. Inlet 1 of spout 11
A spherical check valve 21 is provided to block the spout 1.
A ventilation passage 34 that includes a spherical ventilation valve 25 near 1
is formed so as to communicate with the cavity 32, and this ventilation passage 3
This structure is formed by extending a ventilation pipe 35 from the fourth part toward the inner bottom of the container 1.

Furthermore, as shown in FIGS. 6 and 7, opening and closing the spout 11 with a check valve 21 formed of a flat circular leaf spring is also commonly used as a well-known and commonly used technique.

[Problem that the invention attempts to solve]

Of these conventional techniques, the former technique naturally accommodates the coil spring 33 and the spherical check valve 21 because the size of the space 32 in which the coil spring 33 and the spherical check valve 21 are to be accommodated cannot be made very large due to the nature of this type of container 1. There is a limit to the size of the stop valve 21 itself, and in particular, the length of the coil spring 33 must be shortened, so its elastic force cannot be increased, and there is a risk that the spout 11 may not be reliably sealed. The liquid inside the container 1 may leak, especially when the container 1 falls over. Also, coil spring 3
3 and the spherical check valve 21 are required, and these must be assembled into the space 32.
Another problem is that assembly is troublesome and costs are high.

On the other hand, the latter conventional technology uses a leaf spring check valve 21, so it has a simple structure and is easy to assemble.
Although the cost can be reduced, the elastic force of the flat leaf spring is inferior to that of the coil spring 33, and the sealing of the spout 11 is less reliable than the former.

The present invention was devised in view of the above problems, and the technical object is to provide a liquid dispensing cap which can securely seal the spout, has a simple structure, is easy to assemble, and is inexpensive.

[Means for solving problems]

In order to solve the above-mentioned technical problem, the present invention forms a spout 11 in the cap body 3 attached to the neck part 2 of the container 1, and a check valve 2 is installed in the spout 11.
In the liquid dispensing cap with 1 interposed, the following technical measures were taken.

That is, the check valve 21 is formed of a U-shaped curved leaf spring, and the spout 11 is interposed therebetween to form a liquid spouting cap.

[Effect]

Since the check valve 21 is formed of a U-shaped curved leaf spring, its elastic force is greater than that of a flat leaf spring.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

At the top of a container 1 made of a flexible soft resin, a mouth and neck part 2 forming a mouth part of the container is provided.

A cap main body 3 is screwed onto the mouth and neck part 2, and a large diameter cylinder 6 is provided on the top surface of a top plate 5 that closes the opening edge of the upper end of the cylinder part 4 which is screwed onto the mouth and neck part 2. A small diameter cylinder 7 is provided on top of the large diameter cylinder 6, and the large diameter cylinder 6 and the small diameter cylinder 7 form the spout 11.

An inner plug 12 is provided to be fitted into the large diameter cylinder 6 from the bottom side of the top plate 5, and an inlet 13 to the spout 11 is formed on one side of the inner plug 12.

This inlet 13 has a liquid passage 14 extending along the wall surface of the large-diameter cylinder 6 in the axial direction of the cap body 3 and a liquid passage 15 extending from there at right angles to the axial direction of the cap body 3. Channels 14 and 15 are formed by a tube section 16.

Further, a spring holder 17 is erected on the other side of the inner plug 12, and the base end of a check valve 21 formed by a U-shaped leaf spring is held in this spring holder 17. The check valve 21 is inverted U in the cylinder 7.
It is installed upside down so that it forms a letter shape. The distance between the spring holder 17 and the pipe portion 16 is slightly smaller than the inner diameter of the small diameter cylinder 7, and therefore the width of the U-shaped check valve 21 is also smaller than the inner diameter of the small diameter cylinder 7, so that the check valve A liquid pouring passage 22 is formed between 21 and the wall surface of the small diameter cylinder 7. The other end of the check valve 21 is in contact with the pipe portion 16 to block the liquid flow path 15, and the distal end portion of the check valve 21 blocking the liquid flow path 15 is inserted into the pipe portion 16. A guide protrusion 23 is provided in a protruding manner to prevent the check valve 21 from coming off.

A vent hole 24 is provided on the other side of the inner plug 12, and a vent valve 25 similar to the valve shown in FIGS. 6 and 7 is provided in the vent hole 24 portion.

When pouring out the liquid in the container 1, turn the container 1 upside down and crush it, and the liquid will flow through the spout 1.
The liquid is pushed out from the inlet 13 through the liquid flow path to the spout 11, and the check valve 21 is pushed to open the liquid flow path, so the spout 11 is opened and the liquid is poured out through the liquid spout path 22 to the outside. It can be done. At this time, the liquid is guided by the U-shaped leaf spring forming the check valve 21 and the wall surface of the small diameter tube 7, so that the pouring is smooth and the liquid does not scatter.

Although not shown, the U-shaped check valve 21 does not have to be installed upside down; instead, the inlet 13 to the spout 11 can be provided in the center of the inner stopper 12, and the check valve 21 can be installed horizontally. The outlet 11 may be opened and closed.

Further, during transportation, a seal packing 26 is held between the container mouth and the cap body 3.

[Effect of idea]

According to the present invention, since the check valve 21 is formed of a U-shaped curved leaf spring, the elastic force is greater than that of a flat leaf spring, and the spout 11 can be reliably closed, so there is no risk of liquid leaking. .

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view showing an embodiment of the present invention, Fig. 2 is a partially exploded perspective view, Fig. 3 is a plan view thereof, and Fig. 4 is an inverted version to pour out liquid. FIG. 5 is a longitudinal sectional view showing a conventional example, and FIGS. 6 and 7 are longitudinal sectional views showing other conventional examples. DESCRIPTION OF SYMBOLS 1... Container, 2... Mouth and neck, 3... Cap body, 11... Spout, 21... Check valve.

Claims (1)

[Claims for Utility Model Registration] A liquid dispensing cap in which a spout 11 is formed in the cap body 3 attached to the mouth and neck portion 2 of the container 1, and a check valve 21 is interposed in the spout 11, The liquid dispensing cap is characterized in that the stop valve 21 is formed of a leaf spring curved in a U-shape.