JPH062785Y2 - Applicator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an applicator for applying an application liquid such as ink, correction liquid, paint, paint, or nail varnish.

(Prior Art) As an applicator for applying the above-mentioned coating liquid, there is, for example, one disclosed in Japanese Utility Model Application Laid-Open No. 57-184781. This applicator includes a main application liquid chamber and a small chamber that communicate with each other through an opening, and the opening is opened and closed by an intermediate valve. A tip opening is provided in the small chamber, and the tip opening is opened and closed by a tip valve having an application body. The tip valve is biased toward the tip and is normally pressed against the tip opening to close the same. When the applicator of the tip valve is pressed against the surface to be coated, the tip valve moves inward, and the coating liquid in the small chamber flows out from the tip opening to the outside.

According to such an applicator, the opening is opened by the intermediate valve only when the application liquid is introduced into the small chamber, and the tip opening is opened by pressing the application body to allow the application liquid to seep out. Application can be done.

However, in the case of this applicator, the tip opening is always completely closed except when it is in use, and the coating solution does not seep out to the outside. The amount of the liquid is small, and there is a drawback that it takes a considerable time from the pressing of the coating body until the coating liquid permeates into the coating body and becomes a coated state. further,
When a coating liquid having a relatively high viscosity is used, there is also a disadvantage that the coating liquid in the small chamber is unlikely to flow out even if the coating body is pressed.

Also, if the tip valve is always closed and the small chamber is hermetically closed in this way, even if the coating liquid is introduced into the small chamber, it does not flow out to the outside at all, so it is possible to confirm the introduction of the coating liquid from the outside. It is difficult and the pressure in the small chamber may become higher than necessary due to the introduction of the coating liquid from the main coating liquid chamber.
When the tip opening is opened, this pressure may cause the coating liquid to blow out instantly. In particular, this phenomenon
In the case of the structure in which the intermediate valve is opened by pressing the main body, the pressure in the main coating liquid chamber is increased by the pressing, which becomes more remarkable. Further, in the case of such a structure, since the small chamber is sealed as described above, before the coating liquid in the main coating liquid chamber is completely replaced with the air in the small chamber when the coating liquid is introduced. In some cases, the intermediate valve is easily closed, and the pressed body may not return to its original shape.

(Purpose of the Invention) The present invention is to eliminate the above-mentioned drawbacks, and it is possible to forcibly flow out even a coating liquid having a relatively high viscosity with little time loss at the start of use. It is an object of the present invention to provide an applicator that is capable of confirming the introduction of the coating liquid from the outside and preventing the coating liquid from instantaneously blowing out.

(Structure of the Invention) The present invention forms a main chamber for containing the coating liquid, a small chamber communicating with the main chamber through a communication port, and a small chamber communicating with the outside through a tip port, and also closes the communication port. And an intermediate valve that opens the same communication port by receiving pressure from the outside and a coating material at the tip, and moves in the axial direction into the small chamber with the coating material facing the outside from the tip opening. A tip valve that is housed as much as possible and is pressed in the tip direction to leave a predetermined gap between the tip valve and the inner surface of the tip port, and a biasing means that biases the tip valve in the tip direction. It is equipped with.

Here, the size and area of the "predetermined gap" may be set according to the viscosity of the coating liquid used so that an appropriate coating liquid flow rate can be obtained. That is, when the viscosity of the coating liquid is low, the fluidity is large and a large amount of the coating liquid easily flows out from the gap. Therefore, the size and area of the gap should be set small to suppress the flow rate of the coating liquid from the gap. On the contrary, when the viscosity of the coating liquid is high, the size and area of the gap may be set relatively large.

In such a configuration, normally, the tip valve is pressed in the tip direction by the biasing means to close the tip opening, but since the predetermined gap is formed, the small chamber is not sealed and remains in the small chamber. A small amount of coating liquid is bleeding outside. Next, when the main chamber is pressed from the outside, the intermediate valve opens and the small chamber is filled with the coating liquid. At that time, a part of the coating liquid slightly moves from the slight gap formed in the tip valve toward the tip of the coating material. It will flow out, and the preparation for application will be ready. When the coating material is pressed against the surface to be coated against the biasing force from this state, the tip valve moves inward, the tip opening is opened, and the coating liquid in the small chamber is replenished to the outside.

(Embodiment) A first embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows an applicator according to the present invention. The applicator includes a main chamber 1 for containing a coating solution and a small chamber 2 communicating with the main chamber. Examples of the coating liquid used here include ink, correction liquid, paint, paint, and nail varnish.

The main chamber 1 is formed by a main body 3, a valve cylinder 4, and a valve seat 5. The main body 3 is made of, for example, a flexible material such as plastic, and has a pair of concave portions 3a protruding inward on its side surface, and the concave portions 3a receive a pressure from the outside, so that FIG. It is adapted to be deformed inward as shown by the chain double-dashed line. The valve cylinder 4 is
It is interposed between the main body 3 and the valve seat 5, and has a protrusion 4a at its rear end that protrudes inward. The valve seat 5 is provided on the front surface of the valve cylinder 4 and has a communication port 5a between the main chamber 1 and the small chamber 2.

The small chamber 2 is formed by the valve seat 5 and a front cylinder 6 attached to the front end of the main body 3 so as to cover the valve seat 5, and the front cylinder 6 connects the small chamber 2 and the outside. It has a tip opening 6a, and when not in use, a cap (not shown) that covers the tip opening 6a is fitted on the outer surface of the coating material 14 to be described later.
It is designed to prevent the dryness of. An intermediate valve 7 is provided across both chambers 1 and 2 so as to close the communication port 5a that communicates between the small chamber 2 and the main chamber 1.

The intermediate valve 7 is composed of a large diameter portion 8 located in the main chamber 1 and a small diameter portion 9 located in the small chamber 2.
As shown in FIG. 2, at the boundary between the small diameter portion 9 and
A seal portion 10 is formed which can come into contact with the peripheral portion of the communication port 5a in the valve seat 5. A protrusion 8a that projects outward is formed on a portion of the large-diameter portion 8 that is located inside the valve cylinder 4 between the protrusion 8a and the protrusion 4a. The spring 11 is provided. The intermediate valve 7 is biased toward the tip end by the spring 11, whereby the seal portion 10 abuts on the valve seat 5,
The communication port 5a is closed.

Further, a lead-in portion 12 having a shape gradually expanding toward the rear end is provided in a portion of the large diameter portion 8 corresponding to the concave portion 3a. The pull-in portion 12 has a recessed portion 3 which is deformed inward as described above by external pressure.
By being sandwiched by a from the outside, the entire intermediate valve 7 moves in the direction of the arrow in FIG.
0 moves to the position of the chain double-dashed line in FIG. 2 and separates from the valve seat 5 to open the communication port 5a.

A tip valve 13 as shown in FIGS. 2 and 3 is housed in the small chamber 2. This tip valve 13
A ridge 13a is formed on the peripheral surface, and the coating material 14 is fixed to the tip. The coating material 14 may be one used in a general coating tool such as a brush, a porous body, a felt, or a rod-shaped body provided with a groove, and is appropriately selected according to the application. A brush is used in this embodiment.

The tip valve 13 is attached so that the coating material 14 can move in the axial direction such that the coating material 14 faces the outside from the tip port 6a, and further, in order to urge the tip valve 13 in the tip direction, a valve strip 13a and a valve 13a are provided. A spring (biasing means) 15 is provided between the seat 5 and the seat 5. At the front end of the tip valve 13, a seal portion 13b capable of contacting the inner wall surface of the front cylinder 6 is formed, and the seal portion 13b has an elliptical sectional shape as shown in FIG. As shown in the same figure, this seal portion 13b
By contacting the front tube 6 with the front tube 6, the tip end opening 6a is closed, leaving a gap 16 having a predetermined area.

In such an applicator, since the intermediate valve 7 is biased in the distal direction by the spring 11 when the recess 3a is not pressed, the communication port 5a is blocked by the seal portion 10 of the intermediate valve 7. ing. Therefore, the coating liquid in the main chamber 1 is not introduced into the small chamber 2, and the small chamber 2 is not filled with the coating liquid.

On the other hand, since the tip valve 13 is biased in the tip direction by the spring 15, unless an external force is applied to the coating material 14,
The seal portion 13b and the inner wall surface of the front cylinder 6 are in contact with each other, and the tip end port 6a is closed except for the gap 16.
A small amount of coating liquid in the small chamber 2 can be fed from the gap 16 to the tip port 6
It is in a state where it can exude to the outside through a.

When the concave portion 3a of the main body 3 is pressed from this state, the concave portion 3a
Deforms inward and abuts the retracting portion 12, whereby the intermediate valve 7 slides in the direction of the arrow in FIG. 1 against the biasing force. At this time, since the valve seat 5 and the seal portion 10 are separated from each other to open the communication port 5a and the deformation of the recess 3a pressurizes the coating liquid in the main chamber 1, the coating liquid is introduced into the small chamber 2. To be done.

By this introduction, the coating liquid fills the small chamber 2 to increase the pressure, and this pressure causes a part of the coating liquid to flow into the gap 16 described above.
Through the tip opening 6a, a little flows in the tip direction and is replenished with the coating material 14. At this time, since the coating material 14 already contains some coating liquid, the coating can be started in a short time. Further, at the time of coating, by pressing the coating material 14 against the surface to be coated, the tip valve 13 is pushed back inward against the biasing force, and the tip port 6a is opened as shown in FIG. Therefore, the coating liquid in the small chamber 2 is constantly replenished to the coating material 14 from the tip end port 6a. When the coating liquid in the small chamber 2 is used up, the concave portion 3a may be pressed again.

As described above, according to this applicator, even if the application liquid is introduced into the small chamber 2 to increase the pressure, the tip valve 13 closes the tip port 6a with a gap 16 left unnecessarily. The applicator is not discharged to the outside. Moreover, since a small amount of the coating liquid constantly exudes from the gap 16 through the tip end port 6a, it is possible to start the coating in time as compared with the conventional applicator in which the tip end port is completely blocked. There is little loss. Further, even if the coating liquid has a relatively high viscosity, it can be forced to flow out from the gap 16 to the outside by the pressing from the outside, and the flowing out of the coating liquid introduced into the small chamber 2 Since the amount can be confirmed, it is possible to easily adjust the amount of the coating liquid introduced into the small chamber 2 by pressing from the outside, and since the small chamber 2 is not completely sealed, The pressure of the coating liquid in the small chamber 2 does not increase more than necessary, and therefore a large amount of the coating liquid can be prevented from instantaneously ejecting during coating. Further, by appropriately setting the axial movement amount of the tip valve 13, that is, the distance between the tip port 6a and the front end surface of the intermediate valve 7, the amount of replenishment of the coating liquid flowing out of the small chamber 2 to the outside at the time of coating (application Amount) can be adjusted. Further, since the inside of the small chamber 2 is not closed, there is an advantage that the air in the small chamber 2 and the coating liquid in the main chamber 1 can be smoothly replaced at the time of introduction.

The biasing force of the spring 15 and the area of the gap 16 may be set according to the viscosity of the coating liquid used. That is,
When the viscosity of the coating liquid is low, the fluidity is large, and a large amount of the coating liquid easily flows out from the gap 16. Therefore, by setting the shape of the seal portion 13b so that the area of the gap 16 becomes small, By suppressing the flow rate of the coating liquid from the gap 16 and further setting the biasing force of the spring 15 strongly, the amount by which the tip valve 13 is pushed during coating is reduced, and a large amount of coating liquid is prevented from flowing out. You can prevent it. When the viscosity of the coating liquid is high, the setting is reversed. More specifically, when using a coating liquid having a relatively low viscosity such as ordinary writing ink, the maximum size of the gap 16 is preferably about 0.005 mm to 0.02 mm, and conversely, a correction liquid, a paint, When a coating liquid having a relatively high viscosity such as paint or nail polish is used, the maximum size of the gap 16 is preferably about 0.02 mm to 0.05 mm.

Next, a second embodiment will be described with reference to FIG.

Here, the seal portion 1 of the tip valve 13 in the above-mentioned applicator is used.
The shape of 3b is a hexagon. Even in such a structure, since the gap 17 is formed between the front cylinder 6 and the seal portion 13b, the same effect as described above can be obtained. If the seal portion 13b is formed not only in a hexagonal shape but also in a polygonal shape, the gap 17 can be formed by setting the number of angles.
The area can be adjusted.

Next, a third embodiment will be described with reference to FIG. Here, by providing a plurality of ribs 13c on the seal portion 13b, a gap similar to the above is formed. In addition to this, the effect of the present invention can be obtained if the structure is such that a predetermined gap is formed such as forming a slit in the seal portion 13b or making the surface of the seal portion 13b satin.

(Effects of the Invention) As described above, the present invention urges the tip valve housed in the small chamber in the tip direction, and closes the tip port with a predetermined gap left by the tip valve pressed by this urging. So
More than necessary coating liquid does not flow out during use, and since a small amount of coating liquid exudes from the gap through the tip opening, compared to the conventional applicator in which the tip opening is completely blocked, It has an effect of less time loss until the application can be started. Further, even when a coating liquid having a relatively high viscosity is used, it is possible to forcefully flow out the coating liquid by pressing from the outside. Further, since the coating liquid flows out at the time of introduction as described above, it is possible to adjust the introduction amount of the coating liquid by pressing from the outside while confirming the outflow amount, and the small chamber is completely sealed. Since this does not occur, the pressure of the coating liquid in the small chamber does not increase more than necessary, and therefore a large amount of the coating liquid can be prevented from instantaneously ejecting during coating. Further, various coating liquids can be used by appropriately setting the biasing force for biasing the tip valve and the area of the gap according to the viscosity of the coating liquid.

[Brief description of drawings]

FIG. 1 is a cutaway side view of an applicator according to a first embodiment of the present invention, FIG. 2 is a cutaway side view showing a main part of the applicator with a tip opening blocked, and FIG. FIG. 4 is a sectional side view showing a main part of the applicator with the end opening opened, FIG. 4 is a sectional view taken along line IV-IV of FIG. 2, and FIG. 5 is a fourth view of the applicator in the second embodiment. FIG. 6 is a sectional side view showing the seal portion of the applicator in the third embodiment. 1 ... Main chamber, 2 ... Small chamber, 5a ... Communication port, 6a ... Tip port, 7
... Intermediate valve, 13 ... Tip valve, 14 ... Coating material, 15 ... Spring (biasing means), 16, 17 ... Predetermined gap.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location B65D 83/00

Claims (1)

[Scope of utility model registration request] 1. A main chamber (1) for containing a coating liquid, and this main chamber (1)
Communication with the communication port (5a), and also with the outside (6a)
With the small chamber (2) that is communicated by
An intermediate valve (7) that is provided so as to close the communication port (5a) and that opens the communication port (5a) by receiving a pressure from the outside, and has a coating material (14) at the tip. (14) is the tip opening (6a)
From the small chamber in a state of protruding from the tip toward the outside.
(2) It is movably housed in the axial direction and is pushed toward the tip to close the tip opening (6a) leaving a predetermined gap (17) between it and the inner surface of the tip opening (6a). A tip valve (13),
An applicator characterized by comprising a biasing means (15) for biasing the tip valve (13) in the tip direction.