JP2000237673A - Applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an applicator low in production cost and capable of appropriately adjusting the pressure in a coating soln. tank to stably eject a coating soln. SOLUTION: Ink the applicator, a tip 3 holding a spherical coating member 4 in a freely rotatable manner is connected to a coating soln. tank 1 filled with a film forming coating soln. high in viscosity. A pressure tank 5 having vent holes 52 provided at its small diameter portion 51 in the radial direction is arranged to the tail end of the coating soln. tank 1 and a tube 6 closing the vent holes is fitted to the outer peripheral surface of the small diameter portion 51 protruding into the coating soln. tank 1 and an air compressing member 7 having a through-hole 71 provided to its tail end is arranged to the tail end part of the pressure tank 5. When the inner vol. of the air compressing member 7 is contracted in such a state that the through-hole 71 is closed by a finger, air in the pressure tank 5 is compressed to expand the tube and enters the coating soln. tank 1 from the vent holes to pressurize the interior of the coating soln. tank 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an applicator filled with a high-viscosity coating liquid such as a correction liquid or a cosmetic liquid.

[0002]

2. Description of the Related Art An applicator having a spherical applicator has a tip attached to a tip of a coating liquid tank filled with a coating liquid through a tip, and like a ballpoint pen, a tip is partially attached to the tip. The spherical application body is held rotatably in a state where it comes out from the tip. 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 tip edge of the chip, and a valve structure is formed by the spherical application body and the tip edge of the chip to prevent application liquid from being discharged. Like that.

In use, when the spherical coated body is pressed against the coated surface, the spherical coated body retreats against the spring force of the spring, and a gap is formed between the spherical coated body and the tip edge of the chip. The coating liquid adhering to the inside of the chip of the coating body is applied to the outside of the chip through this gap with the rotation of the spherical coating body and is applied, but since the viscosity of the coating liquid is high, the coating liquid is in a natural state. Is not sufficiently supplied to the surface of the spherical coated body. For this reason, conventionally, the coating liquid tank is blow-molded with a flexible material so as to be deformable, and at the time of use, the coating liquid tank is pressed with a fingertip to pressurize the inside, and the pressure is used to apply the coating liquid to the spherical coated body. To the surface. However, since the coating liquid tank is blow-molded with a flexible material, there is a problem that the manufacturing cost is increased.

Therefore, recently, a cap press type applicator has been put to practical use. With a cap pressurizing applicator, the coating liquid tank is injection molded 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 inside of the liquid tank is pressurized.

[0005]

As described above, the applicator of the cap pressurizing method can be manufactured at a low cost because the application liquid tank is injection-molded with a hard synthetic resin. There is an advantage that the operation is simple because there is no need to press the inside to pressurize the inside. However, since the fitting of the cap is usually performed after the application work is completed,
When applying a wide coating area, the pressure in the coating liquid tank drops on the way and the discharge of the coating liquid deteriorates. Conversely, if a small amount of coating is applied and the cap is Pressure may become too high and the coating liquid may drop. In other words, the cap pressurizing applicator has a problem in that it is difficult to keep the pressure in the applicator tank optimal, and the ejection of the applicator liquid is not stable.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an applicator which has a low production cost, can appropriately adjust the pressure in the application liquid tank, and can stably discharge the application liquid.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a spherical coating body in which a spherical coating body is rotatably held with a part thereof protruding from the tip of a chip. Is repelled by a spring and contacts the inward leading edge of the chip, and the chip is injection molded with hard synthetic resin in a coating tool connected to a coating liquid tank filled with a highly viscous film forming coating liquid. At the tail end of the coated liquid tank, a bottomed cylindrical pressurized tank having a radial vent hole at the small diameter portion at the tip is arranged, and a vent hole is formed on the outer peripheral surface of the small diameter portion protruding into the coating liquid tank. An air compression member made of a soft elastic material and having a through hole at the tail end is placed at the tail end of the pressurized tank, and the air is closed with the fingertip closing the through hole. When the internal volume of the compression member is reduced, the air inside the pressurized tank is reduced. Pressurized by expanding the tube penetrates into the coating solution in the tank through the vent holes, the coating liquid in the tank is to be pressurized.

[0008]

Embodiments of the present invention will be specifically described below with reference to the drawings. In FIG.
The tip 3 is fitted in the opening at the tip of the device. Chip 3
A spherical coating 4 made of a carbide ball having a diameter of, for example, 1.0 mmφ is formed in a ball house at the tip of the tip 3 with a part thereof protruding from the tip of the tip 3. Held freely in rotation. In addition,
The tip 3 may be made of a metal pipe. A small-mass spring (not shown) is arranged in the chip 3.
And presses against the inward leading edge of the chip 3.
That is, a valve mechanism is formed by the spherical coating body 4 and the tip edge of the chip 3 so that the coating liquid is not discharged from the tip of the chip 3 when not in use.

The tip 2 into 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 its manufacturing cost is lower than that of blow-molding with a flexible material. A coating liquid having a viscosity of, for example, 30 to 40 cps and having a high film forming property is filled from the inside of the coating liquid tank 1 and the front opening 2 to the chip 3. When not in use, the cap 8 is fitted to the front end 2.

A pressurized tank 5 is fixed to the tail end of the coating solution tank 1, and the tail end portion of the pressurized tank 5 projects outside from the coating solution tank 1. The pressurized tank 5 has a bottomed cylindrical shape, and has a small-diameter portion 51 formed at the tip, and the small-diameter portion 51 protrudes into the application liquid tank 1. And the small diameter portion 51
Are provided with, for example, two radial ventilation holes 52.

A tube 6 made of a soft elastic material is inserted into the outer peripheral surface of the small diameter portion 51, and the tube 6 normally closes the ventilation hole 52. However, pressurized tank 5
When the air force inside increases, the tube 6 expands and the blockage of the ventilation hole 52 is released. Therefore, the inside of the pressurized tank 5 and the inside of the coating liquid tank 1 communicate with each other through the ventilation hole 52, and the air in the pressurized tank 5 enters the coated liquid tank 1. That is, the tube 6 plays a role of “sagging”.

The tail end opening of the pressurized tank 5 is
Covered with. The air compression member 7 is formed of a soft elastic body and has high flexibility, and has a through hole 71 at a tail end. Therefore, the inside of the pressurized tank 5 communicates with the outside through the through hole 71. In the middle part of the air compression member 7, a deformed part 7 formed in a slightly thin and inward arc shape is provided.
2 are provided.

However, when the application liquid discharge is reduced at the time of starting the application or during the application operation, as shown in FIG. 2, the air pressure member 7 is pressed with the finger hole closing the through-hole 71, The internal volume of the air compression member 7 is reduced by deforming the deformation portion 72 of the air compression member 7. At this time,
Since the through hole 71 of the air compression member 7 is closed with the fingertip, the inside of the pressurized tank 5 becomes a closed space, but the air inside the pressurized tank 5 increases due to the decrease in the internal volume of the air compressed member 7. Pressed. When the air pressure exceeds a predetermined value, as described above, the tube 6 expands and the blockage of the ventilation hole 52 is released, so that the air in the pressurized tank 5 passes through the ventilation hole 52 and passes through the coating liquid tank 1. And the inside of the coating liquid tank 1 is pressurized.

When the pressing operation is released, the inside of the pressurized tank 5 communicates with the atmosphere through the through hole 71, so that the air compressing member 7 returns to its original position promptly by its own elasticity, and the tube 6 passes through. The pores 52 are closed, and the state returns to the state shown in FIG. When the ejection of the application liquid is not sufficient by one pressing operation, this pressing operation may be repeated as necessary.
Conversely, when it is desired to slightly pressurize the inside of the coating liquid tank 1, the pressing operation may be canceled halfway without deforming the air compression member 7 to the end.

As described above, since the pressure in the coating liquid tank 1 can be appropriately adjusted by the pressing operation of the air compressing member 7, a good and stable discharge of the coating liquid can be obtained. Also,
Since the coating liquid tank 1 is injection-molded with a hard synthetic resin instead of blow-molded with a flexible material, it can be manufactured at low cost.

[0016]

As described above, according to the present invention, the spherical coated body is rotatably held with a part thereof protruding from the tip of the chip, and the spherical coated body is repelled by the spring. The tip of the coating solution tank, which is injection-molded with a hard synthetic resin, is brought into contact with the coating solution tank filled with a highly viscous film-forming coating solution. At the tail end, a bottomed cylindrical pressure tank having a radial vent hole at the small diameter portion at the tip is arranged, and a soft elastic body that closes the vent hole on the outer peripheral surface of the small diameter portion that protrudes into the coating liquid tank. An air compressing member made of a soft elastic body and having a through hole at the tail end is arranged at the tail end of the pressurized tank, and the inner volume of the air compressing member is closed with the through hole closed with a fingertip. When shrinking, the air in the pressurized tank is pressurized, It opens and enters the coating liquid tank through the vent hole, and the inside of the coating liquid tank is pressurized. Therefore, the manufacturing cost is low, and the pressure in the coating liquid tank can be appropriately adjusted so that the coating liquid is discharged stably. Tool.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a pressing operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coating liquid tank 2 Tip 3 Chip 4 Spherical coating body 5 Pressurized tank 51 Small diameter part of pressurized tank 52 Vent 6 Tube 7 Air compression member 71 Air hole of air compression member 72 Deformation part of air compression member 8 Cap

Claims (1)

[Claims] 1. A spherical coating body is rotatably held with a part of the spherical coating body protruding from a tip of a chip, and the spherical coating body is repelled by a spring to form an inward tip edge of the chip. In contact with the application tool connected to a coating liquid tank filled with a film-forming coating liquid having a high viscosity, the tip has a small-diameter portion at the tail end of the coating liquid tank injection-molded with a hard synthetic resin. A cylindrical pressurized tank having a bottom with a radial vent hole is disposed therein, and a tube made of a soft elastic material that covers the vent hole is inserted into the outer peripheral surface of the small diameter portion protruding into the coating liquid tank. Rarely, an air compression member made of a soft elastic body and having a through hole at the tail end is disposed at the tail end of the pressurized tank, and the internal volume of the air compression member is reduced with the through hole closed with a fingertip. Then, the air in the pressurized tank is pressurized and the tube is expanded. Entering from the ventilation hole to the coating solution tank, applicator coating liquid in the tank, characterized in that the pressurized.