JP3643299B2 - Applicator - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an applicator filled with an application liquid having a high viscosity such as a correction liquid or a cosmetic liquid.
[0002]
[Prior art]
The applicator with a spherical applicator has a tip attached to the tip of the coating solution tank filled with the coating solution via the tip, and, like a ballpoint pen, a part of the tip protrudes from the tip. In this state, the spherical application body is held freely rotating. Then, the spherical application body is repelled by a spring, and when not in use, the spherical application body is brought into close contact with the inward leading edge of the chip, and the spherical application body and the tip edge of the chip constitute a valve structure so that the coating liquid is not discharged. I am doing so.
[0003]
In use, when the spherical application body is pressed against the application surface, the spherical application body moves back against the spring force of the spring, and a gap is formed between the spherical application body and the tip edge of the tip. The coating solution adhering to the part in the chip is applied to the outside of the chip through this gap as the spherical coated body rotates, but the coating solution is spherically coated in the natural state because the viscosity of the coating solution is high. Do not supply enough to the surface of the body. For this reason, conventionally, the coating liquid tank can be deformed by blow molding with a flexible material, and when used, the coating liquid tank is pressed with a fingertip to pressurize the inside, and the coating liquid is spherically applied using the pressure. The surface is supplied. However, since the coating liquid tank is blow-molded with a flexible material, there is a problem that the manufacturing cost increases.
[0004]
Therefore, recently, a cap pressurizing type applicator has been put into practical use. Cap pressurization type applicators are made by injection-molding the coating liquid tank with a hard synthetic resin, and when the cap is fitted, the air in the pressurized cap enters the coating liquid tank from the tip of the chip and is applied. The liquid tank is pressurized. Cap pressurizing applicators can be manufactured at low cost because the coating solution tank is injection molded with a hard synthetic resin, and there is no need to press the coating solution tank with the fingertips during use, so there is no need to press inside. Has the advantage of being simple.
However, since the cap is usually attached after the application work is completed, when applying a wide application part, the pressure in the application liquid tank drops midway and the discharge of the application liquid becomes worse. If a small amount of coating is applied and the cap is frequently fitted, the pressure in the coating solution tank becomes too high and the coating solution may fall off. That is, the cap pressurization type applicator has a problem that it is difficult to keep the pressure in the coating liquid tank optimal, and the ejection of the coating liquid is not stable.
[0005]
[Problems to be solved by the invention]
For this reason, a pressurized tank having a radial vent at the small-diameter portion at the tip is arranged inside the tail end of the coating liquid tank, and is passed through the outer peripheral surface of the small-diameter portion of the pressurized tank protruding into the coating liquid tank. A closing member made of a soft elastic body that closes the pores is inserted, and an air compression member made of a soft elastic body and having a through hole at the tail end is arranged at the tail end portion of the pressurized tank, and the finger compression unit When the inner volume of the air compression member is reduced while the through hole is closed, the air in the pressurized tank is pressurized to expand the closing member and enter the coating liquid tank from the vent hole of the coating liquid tank, A knock pressurizing applicator that pressurizes the inside of the coating solution tank has been proposed. Such a knock pressurizing type applicator can maintain the pressure in the coating liquid tank at an appropriate value by a knocking operation, and can stably discharge an appropriate amount of the coating liquid without causing the coating liquid to fall out.
[0006]
Here, the closing member that closes the vent hole of the pressurized tank is in close contact with the outer peripheral surface of the pressurized tank, but the closing member is formed of a soft elastic body such as silicon rubber, so that it is left for a long time. If this is done, the closing member adheres strongly to the outer peripheral surface of the pressurized tank. For this reason, it has been found that even if the inside of the pressurized tank is pressurized by a knocking operation, the closing member does not expand, and therefore the inside of the coating liquid tank cannot be brought into a pressurized state.
[0007]
Therefore, an object of the present invention is to provide a knock-type applicator that can adjust the pressure in the coating solution tank as appropriate even when left for a long period of time and can stably discharge the coating solution.
[0008]
[Means for Solving the Problems]
In order to achieve such an object, the present invention provides a spherical coated body that is rotatably held with a part of the spherical coated body protruding from the tip of the chip, and the spherical coated body is repelled by a spring and The tail end of a coating liquid tank injection-molded with a hard synthetic resin in a coating tool connected to a coating liquid tank filled with a high-viscosity film-forming coating liquid in contact with an inward leading edge From the front to the front, a bottomed cylindrical pressurized tank having a radial air hole is protruded, the outer peripheral surface of the pressurized tank is made of a soft elastic body, and the surface roughness is 0.5 to A cylindrical or bottomed cylindrical closure member treated with 100 μm matte finish is fitted to close the vent hole of the pressurized tank, made of an elastic body, and an air compression part having a through hole at the tail end is used as the pressurized tank. The air compression member is disposed at the tail end of the air compression member with the through-hole closed with a fingertip. Shrinking the product, air under pressure in the tank is pressurized to penetrate the closure member from the vent hole of the expansion and the pressure tank to the coating solution tank, the coating solution tank is to be pressurized.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be specifically described below with reference to the drawings. In FIG. 1, a tip 3 is fitted into the tip opening of the tip 2. The tip 3 is formed in a bullet shape with stainless steel, and a spherical application body 4 made of a carbide ball having a diameter of, for example, 1.0 mmφ is exposed at the tip of the tip 3 at the tip of the tip 3. It is held in a freely rotating state. The chip 3 may be made of a metal pipe. A spring (not shown) having a small mass is disposed in the tip 3, and this spring repels the spherical applicator 4 and presses against the inward tip edge of the tip 3. That is, the spherical application body 4 and the tip edge of the chip 3 constitute a valve mechanism so that the coating liquid is not discharged from the tip of the chip 3 when not in use.
[0010]
The tip 2 to which the chip 3 is fitted is connected to the coating liquid tank 1. The coating liquid tank 1 is injection-molded with a normal hard synthetic resin, and the manufacturing cost is lower than that of the one that is blow-molded with a flexible material. The coating liquid tank 1 and the tip 2 are filled from the inside of the tip 2 to the chip 3 with, for example, a coating liquid having a viscosity of 30 to 40 cps and a high film-forming property. Further, the cap 9 is fitted into the front opening 2 when not in use.
[0011]
A bottomed cylindrical pressurized tank 5 is fixed to the tail end in the coating liquid tank 1 and protrudes toward the front (in the direction of the tip 2). For example, two radial air holes 51 are formed at the tip of the pressurized tank 5. A bottomed cylindrical closing member 6 made of, for example, a soft elastic material such as silicon rubber is fitted into and closely attached to the outer peripheral surface of the front end portion of the pressurized tank 5. Closes the vent hole 51. However, when the aerodynamic force in the pressurized tank 5 increases, the blocking member 6 expands to release the blocking of the vent hole 51. Therefore, the inside of the pressurized tank 5 and the inside of the coating liquid tank 1 communicate with each other through the vent hole 51, and the air in the pressurized tank 5 enters the coating liquid tank 1. That is, the closing member 6 plays the role of “mushigomu”.
[0012]
Here, as shown in FIG. 2, the inner peripheral surface 6 a of the closing member 6 is subjected to a satin treatment, and the inner peripheral surface 6 a of the closing member 6 is the outer surface of the pressurized tank 5 even when left for a long time. If the inside of the pressurized tank 5 is pressurized, the closing member 6 is expanded. And the surface roughness of satin is 0.5-100 micrometers. When the surface roughness of the satin surface is 0.5 μm or less, the effect of preventing adhesion when left for a long period of time is not sufficient, and conversely, when the surface roughness of the satin surface is 100 μm or more, the blocking member 6 has a blocking effect on the vent hole 51. not enough.
[0013]
The tail end opening of the pressurized tank 5 is covered with an air compression member 7. The air compressing member 7 is made of a soft elastic material and is rich in flexibility, and has a through hole 71 at the tail end. Therefore, the inside of the pressurized tank 5 communicates with the outside through the through hole 71. A deformed portion 72 formed in a slightly thin and inwardly arcuate shape is provided in the middle part of the air compression member 7. In addition, a spherical stirrer 81 and hexagonal cylindrical stirrers 82 and 83 for stirring the coating liquid are disposed in the coating liquid tank 1.
[0014]
Therefore, when the discharge of the coating liquid is reduced when the application is started or during the application operation, if the knocking operation is performed by pressing the through hole 71 of the air compression member 7 with the fingertip, the air compression member 7 is pressed. The inner volume of the air compression member 7 is reduced by deforming the deforming portion 72. At this time, since the through hole 71 of the air compression member 7 is closed by the fingertip, the inside of the pressurized tank 5 becomes a closed space, but the inside of the pressurized tank 5 is reduced as the internal volume of the air compression member 7 decreases. Air is pressurized. When the air pressure becomes a predetermined value or more, as described above, the closing member 6 expands to release the blocking of the vent hole 51, so that the air in the pressurized tank 5 passes through the vent hole 51 and the coating liquid tank 1. The coating liquid tank 1 is pressurized.
[0015]
When the knocking operation is released, the inside of the pressurized tank 5 communicates with the atmosphere through the through hole 71, so that the air compression member 7 quickly returns to its original position due to its own elasticity, and the closing member 6 is vented to the vent hole 51. Block. If the discharge of the coating liquid is not sufficient in one knock operation, this knock operation may be repeated as necessary. Conversely, when it is desired to slightly pressurize the inside of the coating liquid tank 1, the knocking operation may be canceled halfway without deforming the air compression member 7 to the end.
[0016]
Thus, since the pressure in the coating liquid tank 1 can be adjusted as appropriate by the knocking operation of the air compression member 7, good and stable discharge of the coating liquid can be obtained. Moreover, since the coating liquid tank 1 is injection-molded with a hard synthetic resin instead of blow-molding with a flexible material, it can be manufactured at low cost. And since the satin finish is given to the inner peripheral surface 6a of the closing member 6, the closing member 6 does not adhere to the pressurized tank 5 even if left for a long period of time, and the inside of the coating liquid tank 1 is surely ensured by the knocking operation. Can be pressurized.
[0017]
【The invention's effect】
As described above, according to the present invention, the spherical coated body is held in a freely rotating state with a part of the spherical coated body protruding from the tip of the chip, and the spherical coated body is repelled by a spring so as to face the chip inward. In the applicator where the tip is in contact with the tip edge, and the tip is connected to the coating solution tank filled with the high-viscosity film-forming coating solution, forward from the tail end in the coating solution tank injection-molded with hard synthetic resin A cylindrical tank with or without a bottom is provided with a bottomed cylindrical pressurized tank with a radial vent, and the outer peripheral surface of the pressurized tank is made of a soft elastic body and has a satin finish on the inner surface. Since the bottom cylindrical sealing member is inserted to close the vent hole of the pressurized tank, the blocking member does not adhere to the pressurized tank even if left for a long time. Then, an air compression member made of an elastic body and having a through hole at the tail end is disposed at the tail end of the pressurized tank, and the inner volume of the air compression member is reduced when the through hole is blocked with a fingertip. The air in the pressure tank is pressurized to expand the blocking member and enter the coating liquid tank through the vent of the pressurized tank. The inside of the coating liquid tank is pressurized. The pressure in the liquid tank can be adjusted as appropriate, and the applicator can stably discharge the coating liquid.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a closing member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Coating liquid tank 2 Front port 3 Tip 4 Spherical application body 5 Pressurized tank 51 Ventilation hole 6 Closure member 6a Inner week surface 7 of an obstruction member Air compression member 71 Air compression member through-hole 72 Air compression member deformation part 9 Cap

Claims (1)

The spherical applicator is held in a freely rotating manner in a state in which a part of the spherical applicator protrudes from the tip of the chip, and the spherical applicator is ejected by a spring and comes into contact with the inward tip edge of the chip. In an applicator connected to a coating solution tank filled with a film-forming coating solution having a high viscosity,
From the tail end of the coating liquid tank injection-molded with a hard synthetic resin, a bottomed cylindrical pressure tank having a radial air hole is projected,
A cylindrical or bottomed cylindrical closure member made of a soft elastic body and subjected to a matte finish having a surface roughness of 0.5 to 100 μm is fitted on the outer peripheral surface of the pressure tank. Plug the tank vents,
An air compression member made of an elastic body and having a through hole at the tail end is disposed at the tail end of the pressurized tank,
When the inner volume of the air compression member is reduced while the through hole is closed with the fingertip, the air in the pressurized tank is pressurized to expand the blocking member and enter the coating liquid tank from the vent hole. And an inside of the coating liquid tank is pressurized.

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