JPH0615856Y2 - Trigger type liquid ejection container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a trigger-type liquid ejection container for both inversion and upright.

"Prior Art" As this type of container, the base cylinder part of the trigger type ejector main body is attached to the mouth part of the liquid storage container body, and a pipe as a part of the liquid suction passage from the ejector main body into the base cylinder part. The fitting cylinder is hung down, and the outside air intake passage is opened to open the lower end into the upper part of the base cylinder part and the upper end into the cylinder of the ejector body. Some have an open top of the road.

“Problems to be solved by the device” However, in the above-mentioned conventional liquid ejection container, when the plunger is retracted by pulling the trigger when inverted, the liquid inside the container passes through the outside air suction passage opened at that time. Had the drawback of leaking to the outside.

That is, the outside air suction passage is normally closed by the plunger, but when the plunger moves backward due to the pulling of the trigger, some liquid leaks out against the outside air sucked through this opening.

Therefore, an object of the present invention is to provide a trigger-type liquid ejection container in which a check valve having a simple structure is added to effectively prevent liquid leakage during inverted use.

[Means for Solving the Problems] In order to achieve the above object, the container of the present invention has the base cylinder part 6 of the trigger type ejector main body 2 attached to the mouth part of the liquid storage container body 1, and A pipe fitting cylinder 12 as a part of a liquid suction path is hung from the ejector body into the base cylinder portion, and further, a lower end is opened into an upper portion of the base cylinder portion and an upper end is opened into a cylinder 13 of the ejector body. In the trigger liquid ejecting container for both forward and reverse, which is provided with the outside air suction passage 14 so that the upper end of the outside air suction passage is opened when the plunger retracts in the cylinder, the outer surface of the pipe fitting cylinder 12 and the base cylinder portion. 6. A check valve 19 for preventing liquid leakage when used upside down is provided in the gap between the inner surface and the inner surface of the check valve. The check valve includes an elastic skirt portion from the outer surface of the short tubular portion 20 fitted to the pipe fitting tube. 22 to project the outer periphery of the lower end of the elastic skirt Kimoto tubular portion is pressed against the inner surface, characterized in that formed.

"Operation" For example, referring to FIG. 1 to FIG.
Since the check valve 19 responds to the differential pressure between the front and rear, and opens when the outside air suction passage 14 is opened by retracting the plunger 16, the outside air is sucked into the container body 1 to prevent negative pressure as before. .

On the other hand, when it is used upside down, the outside air intake path
14 The upper end is closed by the plunger, and the lower end is doubly sealed by the check valve 19, so that liquid leakage can be reliably prevented. Also, when the plunger retracts by pulling the trigger, only the seal of the plunger is released and the outside air can be sucked in, and the check valve does not open to the extent that the outside air can be sucked in due to the negative pressure inside the container. No external leakage occurs.

[Embodiment] An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, 1 is a container for liquid storage, and 2 is a trigger type ejector main body.

The container body 1 is made of synthetic resin in which the mouth / neck portion 5 is erected from the upper end of the body portion 3 via the shoulder portion 4.

The trigger type ejector main body 2 is provided with an inward flange 7 in which a base cylinder portion 6 is hung from the lower surface of the main body portion 2a, and the base cylinder portion 6 is screwed into the mouth neck portion and the mouth neck outer surface. It is mounted via the mounting cylinder 8. In the illustrated example, the upper half portion of the fitting cylinder 10 having the outward flange 9 attached to the outer surface of the intermediate portion is fitted into the base cylinder portion 6 so that the outward flange 9 faces inward of the mounting cylinder 8. It is sandwiched between the flange 7 and the upper end of the container body neck portion 5. A packing 11 is interposed between the lower surface of the outward flange 9 and the upper end surface of the mouth / neck portion 5.

A pipe fitting cylinder 12 as a part of a liquid suction passage with a suction valve 12a for feeding a liquid into the pump chamber of the main body portion 2a is hung inside the base cylinder portion 6. In the illustrated example, the pipe fitting cylinder 12 and the fitting cylinder 10 are integrally formed in a double cylinder shape.

Further, an outside air suction passage 14 having an opening at the lower end into the upper portion of the base cylinder 6 (strictly speaking, the fitting cylinder 10) and an opening at the upper end into the cylinder 13 of the main body portion 2a is provided. When the plunger 16 moves back and forth by operating the trigger 15, the upper end of the outside air suction passage 14 is opened. That is, when the plunger 16 is in the advanced state, the upper end of the outside air suction passage 14 is closed by the outer peripheral surface of the plunger 16.

Reference numeral 17 in the figure is a suction pipe connected to the pipe fitting cylinder 12 via a connector 17A, and the lower end opening thereof reaches the bottom of the container body. Also, the suction pipe 17 is
It is formed of a highly flexible synthetic resin material, and a ball-shaped weight 18 is attached to the lower end thereof via a support 18a. The weight 18 may be cylindrical as shown in FIG.

The feature of the present embodiment is that a non-return valve is provided in the gap between the outer surface of the pipe fitting cylinder 12 and the inner surface of the base cylinder portion 6 (strictly speaking, the fitting cylinder 10) to prevent liquid leakage during inverted use. There is a valve 19.

The check valve 19 opens and closes in response to the differential pressure across the
An elastic skirt-like portion 22 as a valve element is projected from an upper end outer edge of the short cylinder portion 20 fitted to the pipe fitting cylinder 12 through an outward flange-like portion 21 to form a lower end outer peripheral portion of the elastic skirt-like portion 22. Is pressed against the inner surface of the base cylinder portion 6 serving as a valve seat. Rubber or the like is selected as the material of the short tubular portion 20 and the like.

Therefore, in this embodiment, when the inverted pipe is used, the lower end of the suction pipe 17 falls toward the container mouth / neck portion 5 side, so that the liquid inside the container can be sucked up and the pump action by the operation of the trigger 15 is realized. .

FIG. 3 shows another embodiment of the present invention.

This is to branch the two branch pipes 17b, 17c from the lower end of the base pipe portion 17a of the connector 17A, to separately open the respective tip ends of these branch pipes 17b, 17c in the vertical direction, and to branch both pipes 17b,
This is an example in which the present invention is applied to a container for double-sided inversion, in which check valves 23A and 23B are provided in each of 17c, and a suction pipe 17 without a weight is connected to a branch pipe 17c having a lower opening.

According to this, in the inverted use, the branch pipe 17b with the upper opening is
As a result, liquid inside the container can be sucked up, and the check valve 19 can prevent liquid leakage.

[Advantage of Device] As described above, the container of the present invention, by having the above-described configuration, can satisfactorily eject the liquid in both the upright and inverted states, and is capable of providing the outside air suction mechanism without any major structural change. It is possible to surely prevent liquid leakage at the time of jetting in an inverted state without damaging it.

In addition, in the inverted state, since the liquid can be ejected by grasping the container neck and pulling the trigger, the liquid can be ejected accurately and easily to an appropriate position with one hand.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of the container of the present invention, FIG. 2 is a half sectional view showing a modified example of a weight and a support, and FIG. 3 is another embodiment of the container of the present invention. It is a partially notched side view shown. 1 ... Container body, 2 ... Trigger type ejector body, 19 ... Check valve

Claims (1)

[Scope of utility model registration request] 1. A base cylinder portion 6 of a trigger type ejector main body 2 is attached to the mouth of a liquid containing container body 1, and a pipe is fitted from the ejector main body into the base cylinder portion as a part of a liquid suction passage. An outside air suction passage 14 is provided which hangs the cylinder 12 and further opens a lower end into the upper part of the base cylinder part and an upper end into the cylinder 13 of the ejector main body, so that the outside air is advanced when the plunger retreats in the cylinder is retracted. In a trigger type liquid ejection container for both upside down and suction with the upper end of the suction path open, a reverse type which prevents liquid leakage during use upside down is provided in the gap between the outer surface of the pipe fitting tube 12 and the inner surface of the base tube portion 6. A stop valve 19 is provided, and the check valve has an elastic skirt-shaped portion 22 protruding from an outer surface of a short cylindrical portion 20 fitted to the pipe fitting cylinder, and a lower end outer peripheral portion of the elastic skirt-shaped portion has the base cylindrical portion. Trigger characterized by being pressed against the inner surface Liquid ejection container.