JPH063825Y2 - Container with liquid ejection mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of use) A volume change chamber formed by a cylinder and a piston, a first valve that opens when the volume change chamber expands, and a second valve that opens when the volume change chamber also contracts. The first valve as a liquid outlet from the liquid storage chamber to the volume change chamber, the second valve as a liquid outlet from the volume change chamber, and
An elastic member is interposed between the cylinder and the piston, and the cylinder and the piston are relatively moved by the elastic force of the elastic member and the pressing force applied against the elastic force. The present invention relates to a container having a liquid ejection mechanism configured to slide. As an example of the liquid, an eyeliner,
Examples include cosmetics such as lip color, stationery liquids such as paints, ink, and glue, as well as chemicals and seasonings.

(Prior Art) An example disclosed in Japanese Utility Model Laid-Open No. 62-139971 is shown in FIGS. 4 and 5. For convenience of explanation, the reference numeral 1 is a container body, 2 is a pressing plate, 3 is a cylinder, 4 is a piston, and 5 and 6 can be opened upward in the drawing. A valve (according to the orientation of the drawing, 5 is called an upper valve, 6 is called a lower valve), 7 is an elastic member, 8 is a storage chamber made of a soft material, and 9 is a passage. The pressing plate 2 is biased upward in the drawing by the elastic member 7, and its end is locked to the container body 1. For example, when an external force is applied to the portion shown by the arrow in FIG. 5 and pressed downward in the drawing, the pressing plate 2 tilts with the end portion on the right side of the drawing as a fulcrum, and when the external force is removed, the position is restored by the elastic member 7. To do. By this movement, the upper valve 5 and the lower valve 6 open and close, the cylinder 3 and the piston 4 relatively slide, and the liquid stored in the storage chamber 8 made of a soft material is discharged.

This has the advantage that an appropriate amount of liquid can be discharged by an extremely simple operation of applying an external force to an appropriate portion of the pressing plate 2. Since the cylinder 3 and the piston 4 are located below the center of the pressing plate 2, the force is transmitted to the cylinder 3 and the piston 4 regardless of which part of the pressing plate 2 is pressed, and the same pressing force is applied depending on which part of the pressing plate 2 is pressed. The amount of liquid ejected can be changed by the amount.

(Problems to be Solved by the Invention) In the above-mentioned FIG. 4 and FIG.
There is a possibility that the sliding failure between the piston and the piston 4 may occur. This will be described with reference to the attached FIG.

Assuming now that the cylinder 3 is fixed to the pressing plate 2, the force applied to the pressing plate 2 as indicated by the white arrow is as shown by the one-dot chain line arrow at the sliding contact portion between the cylinder 3 and the piston 4. , A line connecting the sliding contact part and the fulcrum of tilting (illustrated by the dotted line)
It is transmitted as a force in the direction perpendicular to.

That is, the force is applied in the direction in which the axes of the cylinder 3 and the piston 4 are not aligned. Even if such a force is applied, there is actually material elasticity of the parts and play between the parts, and it is possible to positively give these to the parts. However, sliding failure does not always occur. But, at least, there's enough fear. If possible, we would like to reduce such fears in advance.

(Means for Solving the Problem) The above-mentioned fear is due to the existence of the angles α and β in FIG. If the angles α and β are made smaller, the above fear can be reduced. For that, the sixth
In the case of the figure, the tilt fulcrum may be located further below.
In other words, the line connecting the end portion of the pressing plate and the container main body and the sliding contact portion between the cylinder and piston in the external force unloaded state is the sliding axis direction of the cylinder and piston. On the other hand, an engaging portion between the end portion of the pressing plate and the container body is formed at a position orthogonal to each other. That is,
According to the present invention, a volume change chamber formed by a cylinder and a piston is provided with a first valve that opens when the volume of the volume change chamber increases and a second valve that opens when the volume changes. Is used as a liquid outlet from the liquid storage chamber to the volume change chamber, the second valve is used as a liquid outlet from the volume change chamber, and an elastic member is interposed between the cylinder and the piston. A container having a liquid discharge mechanism configured to relatively slide the cylinder and the piston by the elastic force of the elastic member and the pressing force applied against the elastic force. A pressure plate having a pressing portion for pressing the liquid discharge mechanism in the center is arranged so that its end is locked to the container body, and when an external force is applied to an appropriate portion of the pressing plate, Use the end that has been stopped as a tilt fulcrum of the pressing plate There are a line connecting the end portion of the pressing plate and the locking portion of the container body, and a sliding contact portion between the cylinder and the piston in the external force unloaded condition,
A gist of a container having a liquid discharge mechanism in which a locking portion between an end of the pressing plate and the container body is formed at a position orthogonal to a sliding axis direction of the cylinder and the piston, To do.

(Example) An example is shown in the attached FIG. FIG. 1 corresponds to FIG. The difference from FIG. 5 is that, as shown by the dotted line in the figure, the locking position between the end 2a of the pressing plate 2 and the container body 1 is
The height of the container body 1 is made substantially the same as that of the sliding contact portion 10 and the height of the container body 1 is lowered so that the pressing plate 2 protrudes from the container body 1 and the container body 1 is made of two members screwed together. It is in.

Here, the locking position between the end portion 2a of the pressing plate 2 and the container body 1 is set to be substantially at the same height as the sliding contact portion 10. However, once the normal sliding starts, the sliding can be performed without any defect thereafter. In consideration of the continuation, at that position, at the start of sliding, the force is transmitted in the direction in which the axes of the cylinder 3 and the piston 4 are aligned. That is, the angle α,
β is approximately 0 °.

By the way, the reason why the height of the container body 1 is lowered and the pressing plate 2 is projected from the container body 1 is to prevent the upper end surface of the container body 1 from being disturbed by the pressing. The main body 1 is made up of two members that are screwed together. The cylinder 3, the piston 4, the storage chamber 8 made of a soft material, etc.
It is considered to be replaced as a cartridge. At this time, if the pressing plate 2 is integrated with the cylinder 3, the pressing plate 2 can also be replaced as a part of the cartridge.

In addition, some points that were not explained are added. Examples of the soft material forming the storage chamber 8 include a film of polyethylene, polypropylene, polyvinyl chloride, or the like, an aluminum foil laminated film, or the like. Often, you should consider what you can find in seasoning boxes for instant ramen. Further, although the depression plate is formed on the upper surface of the pressing plate 2, in the case where the discharged liquid is stored or used by adhering it to the application body such as cosmetics,
It can be used to adjust the liquid adhesion to the application destination. Further, the sliding contact portion 10 is shown in consideration of a resilient O-ring fixedly fitted to the outer circumference of the piston 4.

Next, another example is shown in FIG. 2 and FIG.

The container body 1 of this example is divided into 2 by a partition wall 1a.
There are two chambers, one chamber accommodates the applicator 11 that slides and projects the application destination, and the other chamber accommodates the pressing plate 2.
Has doubled as the cover. Also, the lid 12
Is attached, and a mirror 13 is attached to the inner surface of the lid 12. As will be understood from this, this example shows one application example to cosmetics. Cosmetics such as eyeliner and lip color have a very small amount of liquid used per order, such as 1/10 ² cc or less, and such a small amount of discharge is not always a constant amount. Is a very suitable application target in that the user can arbitrarily discharge an appropriate amount according to his or her preference.

Further, as shown in FIG. 3, the end 2a of the pressing plate 2 is locked to the container body 1 by providing a protrusion 1c of an appropriate length inside the side wall 1b of the container body 1, and End 2a
Is provided by projecting outwardly, and is also provided as a projection having an appropriate length. The pressing plate 2 is attached to the container body 1 by fitting it from above by utilizing the elasticity of the material. On the contrary, when removing the pressing plate 2, the pressing plate 2 is used by utilizing the protruding portion of the pressing plate 2 from the container body 1.
The locking may be released by applying a force so as to press against the side wall 1c.

Although the upper valve 5 is not directly exposed on the upper surface of the pressing plate 2 in FIG. 3, it is taken into consideration so as not to be damaged by the use of the applicator, and an O-ring is used for the sliding contact portion. Although there is a slight difference in the shape of the parts and the number of parts from the previous example, such as the fact that they do not exist, the basic operation is the same, and the height of the side wall 1b of the container body 1 changes. The application tool 11 is easily removed.

Although two examples have been described above, various other methods are possible. For example, instead of ejecting the liquid onto the pressing plate, it is possible to separately provide an ejection port, or it is possible to use an uneven pressing plate in which a portion to which an external force is applied has a gentle bulge. Moreover, the portion of the center of the pressing plate that presses the liquid ejection mechanism does not have to be the center of the pressing plate. There are asymmetrical pressure plates that do not have a center, and even in the case of a symmetrical pressure plate that has a center, it is possible to deviate from the center so that the discharge amount can be changed left and right, for example.

(Effect of the Invention) Although tilting of the pressing plate is essentially disadvantageous in terms of smooth sliding of the cylinder and piston, it is important in controlling the discharge amount of even a very small amount of liquid. In this respect, according to the present invention, while allowing the tilting of the pressing plate,
Since the occurrence of defective sliding between the cylinder and the piston is sufficiently suppressed, it is possible to discharge a desired large amount or a small amount of liquid with a single operation and with a reasonably stable operation.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of the present invention, FIG. 2 is a perspective view showing another example, FIG. 3 is a sectional view taken along the line II of FIG. 2, and FIG.
FIG. 5 is a perspective view of a conventional one, FIG. 5 is a sectional view of FIG. 4, and FIG. 6 is a schematic diagram for explaining a problem to be solved. 1 ... Container body, 1a ... Partition wall, 1b ... Side wall, 2 ... Pressing plate, 2a ... End part, 3 ... Cylinder, 4 ... Piston, 5 ...
Upper valve, 6 ... Lower valve, 7 ... Repulsion member, 8 ... Storage chamber, 9 ... Passage, 10 ... Sliding contact part, 11 ... Applicator, 12 ... Lid, 13 ...
mirror.

Claims (1)

[Scope of utility model registration request] 1. A volume change chamber formed by a cylinder and a piston is provided with a first valve that opens when the volume of the volume change chamber increases, and a second valve that opens when the volume changes as well. The first valve is a liquid outlet from the liquid storage chamber to the volume change chamber, the second valve is a liquid outlet from the volume change chamber, and an elastic member is provided between the cylinder and the piston. A container having a liquid ejection mechanism configured to relatively slide the cylinder and the piston by the elastic force of the elastic member and the pressing force applied against the elastic force. A pressure plate having a pressing portion for pressing the liquid discharge mechanism in the center is arranged so that its end is locked to the container body, and when an external force is applied to an appropriate portion of the pressing plate, The tilted fulcrum of the pressing plate with the stopped end Oite, an end portion of the pressing plate and the locking portion of the container body, the line connecting the sliding portion between the cylinder and the piston in the external force unloaded condition,
A container having a liquid discharge mechanism in which a locking portion between the end of the pressing plate and the container body is formed at a position orthogonal to the sliding axis direction of the cylinder and the piston.