JPH0627551Y2 - Drop continuous drop prevention device - Google Patents

Description

Detailed Description of the Invention [Prior Art] Liquid substances such as reagents, reagents, and medicines have been conventionally stored in containers made of glass, ceramics, plastics, etc., and collected as needed. In particular, since the liquid substance in the container is directly collected drop by drop, as shown in FIG.
A container in which the inner plug having a is attached to the liquid container 3 is used. In the container, the liquid material is filled through the outer container opening 4 by removing the inner stopper, and then the inner stopper is attached and the container is turned upside down as necessary, or the outer container is swung up or down. It was pressed and the liquid substance inside was collected. However, in the case of collecting each drop in the container, there is a drawback that the amount per drop is large and the breakage of the drops is poor, and in particular when the inner volume becomes small, not a single drop but multiple drops are continuously dropped. Accurate sampling is essential when it is necessary to collect a predetermined number of drops of a liquid substance and mix it with other substances to exert specific performance and physical properties, or to produce a medicinal effect with a predetermined number of drops. The continuous drop of many drops has been a big problem. Further, when the liquid material is expensive, a large number of continuous drops causes a great loss.

In order to overcome the above-mentioned continuous drop of many drops, conventionally, improvements have been made from the viewpoint of breakage of drops between the inner plug 2 and the liquid substance. Specifically, the method of changing the shape of the tip portion of the inner plug 2 or reducing the diameter of the discharge port 1 has been taken, but in the first place, drop breakage is caused by the surface tension of the liquid substance itself and the tip of the liquid substance and the inner plug. It is closely related to the interfacial tension with the part, and there is a limit from the standpoint of preventing droplet breakage simply by changing the shape and diameter,
I couldn't reach a complete solution yet.

[Challenges for devising]

As a result of earnest studies on the above problems, the inventors of the present invention have found that the improvement of drop breakage alone cannot be a fundamental solution to prevent continuous drop of multiple drops, and the main cause of continuous drop of multiple drops is It was found that the body temperature transmitted from the holding finger warms the air layer in the container, and as a result, the air layer expands and pushes out the liquid substance therein. Based on the above findings, the present invention is a container-mounted droplet continuous type that prevents continuous drop of multiple drops by suppressing heat conduction as much as possible and expansion of the air layer to enable continuous drop collection. A fall prevention device is provided.

[Means and Actions for Solving]

The present invention has a pressing plate for pressing the outer wall surface of a liquid container in which the container wall surface is deformable toward the inner side by pressing from the outside, and a plurality of projections are provided on the surface of the pressing plate facing the liquid container. A device for preventing continuous drop of liquid drops, characterized in that a substance is applied thereto.

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a typical example of a device for continuously dropping liquid drops according to the present invention. As shown in the figure, the most preferred embodiment of the device for continuously dropping liquid drops of the present invention is one in which a band-shaped pressing plate is used as the pressing plate, and the pressing plate is configured as a ring-shaped closed ring. is there. In this aspect,
The pressing plate may be provided with, for example, a gripping part, but normally, the pressing plate alone is configured as a device for continuously dropping liquid drops.

The greatest feature of the present invention is that a plurality of protrusions 5 are provided on the surface of the pressing plate facing the liquid container. Due to the presence of the protrusions 5, when the inside filling liquid is dropped and collected from the container filled with a liquid such as a reagent by pressing the outer wall surface of the container, an air layer in the container can be obtained. The heat transfer of body temperature can be prevented as much as possible.

The droplet continuous drop prevention device shown in FIG. 1 is usually used by mounting the liquid droplet continuous drop prevention device on the liquid container 3 with their central axes aligned with each other, as shown in FIG. When collecting the drop of the filling liquid, touch the outer surface of the device for continuously dropping liquid drops of the present invention, that is, the surface that does not face the liquid container 3, and hold the liquid container 3 through the device to reverse it. And press from the outside of the device.

By doing so, the pressing force of the finger is transmitted to the outer wall surface of the liquid container 3 through the droplet continuous drop prevention device, a part of the wall surface of the container is deformed to the inside of the container, and the filling liquid inside drops. Collected.

At this time, since each tip of the protrusions provided on the device for continuously dropping droplets is in contact with the outer wall surface of the container, part of the body temperature is transmitted to the container through the protrusions. Depending on the object, the heat transfer area is small, and since there is an air layer in the middle part where there is no protruding object, it is difficult to transfer the body temperature to the container body,
As a result, the expansion of the air layer in the container is suppressed, and multiple drops are continuously prevented from falling.

In this way, the protrusions were applied with the intention of transmitting the pressing force to the container and reducing the heat transfer amount of the body temperature as much as possible. Therefore, the shape and number of the protrusions are not particularly limited as long as they have such a function. Generally, for example, a columnar shape, a conical shape, a hemispherical shape or the like as shown in FIG. Normally, when the number of protrusions is too small, when pressed for collection, the inner surface of the part of the continuous drop prevention device that does not have protrusions is in direct contact with the container and It is not preferable because there is a risk that a considerable amount of body temperature will be transmitted from the body. Therefore, it is preferable that a large number of protrusions having substantially the same height are provided so as to be distributed substantially uniformly.

3 and 4 show another embodiment of the present invention. FIG. 3 is a perspective view showing a state in which it is not used, and FIG. 4 shows a state in which both ends are fixed and ring-like closed for use. It is a figure. That is,
In this embodiment, the size of the loop of the continuous drop preventing device for droplets can be changed and used for various liquid containers having different sizes according to the sizes. As shown in FIG. 3, it is a flat band-shaped pressing plate when not in use, and has a locking part at one end and a receiving part at the other end. When using, these locking parts should be locked to the receiving part. By the fourth
As shown in the figure, it is configured as a ring shape that is closed like a finger ring. The structure of the locking portion and the receiving portion is not particularly limited as long as the locking portion is locked to the receiving portion, but in this figure, as the locking portion, the large columnar locking portion 1 and the receiving portion are used. Fitting hole 7
1 is provided, and in particular, by providing a plurality of 1 of the fitting holes 7, 1 of the fitting holes 7 is appropriately selected according to the diameter of the container to be mounted and fixed in a ring shape.

As a mode of the locking part and the receiving part, a method using a face tape (6-2, 7-2) as shown in FIGS. 5 and 6 showing another mode of the present invention, and a belt As a typical example, a method of fixing to the formula (3 of 6 and 3 of 7) can be given.

It should be noted that FIG. 5 is a drawing corresponding to FIG. 3 when not in use, but when the band-shaped pressing plate is ring-shaped closed in a ring shape, a mountain-shaped projection long in the same direction as the central axis of the ring is formed. Form 5 is adopted.

FIG. 7 shows still another embodiment of the present invention, in which the band-shaped pressing plate is formed in a ring shape and a partially opened ring shape. With such a configuration, the elasticity of the material of the pressing plate is used to change the opening degree of the partially opened opening according to the size of the diameter of the liquid container, so that It becomes possible to cope with the change in diameter. In this case, it is also preferable to form the hinge portion 8 by, for example, projecting a portion of the pressing plate facing the diameter direction from the opening portion to the outside in a horseshoe shape in order to easily cope with a change in diameter. It is a mode. In addition, the end portion of the opening of the pressing plate is
As shown in FIG. 7, when it is mounted on the liquid container by gently folding it outward at the opening position, mounting from the opening can be facilitated.

Some typical modes of the device of the present invention have been mentioned above.
In addition, for example, in order to prevent the outer wall surface of the liquid container from being damaged by the protrusion of the device of the present invention, a mode in which the tip of the protrusion is covered with a flat plate is also one aspect of the present invention. Is.

The material of the device of the present invention is not particularly limited, but it is generally flat plate-like when not in use, and plastics such as polypropylene and polyethylene that can be transformed into a circular shape when in use, natural rubber, synthetic rubber, etc. are preferable. As shown in FIG. 7, an open ring-shaped hinge portion may be formed entirely of metal, or only the hinge portion may be formed of metal and the other portion may be formed of plastic or the like.

In addition, when the liquid container is reversed and pressed from the outside,
It suffices that a part of the wall surface of the container is made of a material that can be slightly deformed toward the inner side by pressing from the outside so that the liquid inside can be dropped and collected.

[Effect of device]

As can be understood from the above description, if the device for preventing continuous drop of droplets of the present invention is mounted and the filling liquid in the container is collected, droplets can be collected one by one without dropping multiple drops continuously. it can. In particular, when the amount of the filling liquid is low and the amount of air is larger than that of the filling liquid, the phenomenon that the air is heated and expanded by the body temperature to push out the filling liquid is noticeable.
This can be prevented and the last filling liquid can be effectively used.

[Brief description of drawings]

FIG. 1 is a perspective view of a typical droplet continuous drop prevention device of the present invention, and FIG. 2 is a perspective view showing a use state in which the droplet continuous drop prevention device is mounted on a container. FIGS. 3 to 7 are perspective views showing another embodiment of the present invention, and particularly FIGS. 3 and 5 show an embodiment of the state of the continuous drop preventing device when not in use. FIG. 8 is a sectional view showing a conventional liquid container. In the figure, 1 is a discharge port, 2 is a stopper, 3 is a container for liquid,
4 is an outer container port, 5 is a protrusion, 6 of 1, 1 of 6, 2 of 3
Is a locking portion, 7 is a receiving portion, 7 is a receiving portion, 7 is a receiving portion, and 7 is a hinge portion.

Claims (4)

[Scope of utility model registration request] 1. A pressing plate for pressing an outer wall surface of a liquid container, the container wall surface of which is deformable toward the inside by being pressed from the outside, and the pressing plate is provided on a surface facing the liquid container. A device for continuously dropping liquid drops, wherein a plurality of protrusions are provided. 2. The device according to claim 1, wherein a band-shaped pressing plate is used as the pressing plate, and the band-shaped pressing plate is formed in a ring shape like a ring. 3. The device according to claim 2, wherein the ring-shaped ring is configured as a closed ring. 4. The device according to claim 2, wherein the ring-shaped ring is configured as an open ring.