JP2516608Y2 - Applicator - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an applicator filled with a highly viscous 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 the tip of a coating liquid tank filled with the coating liquid through a front end. The spherical applicator is rotatably held in a state in which it protrudes 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 so that the application liquid is not discharged. Like that.

The inventor of the present invention has confirmed that when the diameter of the spherical coating material is 1 mmφ, the valve function can be sufficiently fulfilled by springing with a spring having a spring force of about 35 to 40 g. If the spherical applicator becomes larger than 1 mmφ, the contact length between the spherical applicator and the tip edge of the chip becomes longer in proportion to it, so the spring force is also made proportionally larger and the spring per unit length of contact between the two. The force should be equivalent to that of 1 mmφ.

When the spherical applicator is pressed against the application surface during use, the spherical applicator retreats against the elastic force of the spring, and a gap is formed between the spherical applicator and the tip edge of the chip. The coating liquid adhering to the inside of the tip of the coating body passes through this gap and is applied to the outside of the chip as the spherical coating body rotates.However, since the viscosity of the coating liquid is high, the coating liquid is in a natural state. Does not sufficiently supply to the surface of the spherical coated body. For this reason, the coating liquid tank is blow-molded with a flexible material so that it can be deformed. 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 surface of the spherical coating body. Is being supplied to.

[0005]

As described above, since it is necessary to press the coating liquid tank with a fingertip to pressurize the inside during use, the operation is complicated, and the coating liquid tank is blow-molded with a flexible material. Therefore, there is a problem that the manufacturing cost increases.

Therefore, an object of the present invention is to provide an applicator which does not need to press the coating liquid tank with a fingertip at the time of use and has a low manufacturing cost.

[0007]

In order to achieve the above object, the present invention provides a spherical applicator which is rotatably held while a part of the spherical applicator is exposed from the tip of the tip. Is spring-loaded by the spring to contact the inward tip edge of the tip, the tip holding the tip is connected to the coating liquid tank, and the coating liquid tank is filled with the highly viscous film-forming coating liquid. In the applicator in which the annular protrusion formed on the outer periphery of the cap closely adheres to the inner peripheral surface of the inner cylinder of the cap and seals the chip, the annular protrusion of the front opening is attached to the tip edge of the inner cylinder in the process of mounting the cap on the front opening. When the volume of the sealed space in the inner cylinder when the caps are in close contact is V ₁ and the volume of the sealed space in the inner cylinder when the cap is completely attached is V ₂ , V ₁ is 5.5 which is V ₂ .
More than double.

[0008]

Since V ₁ is set to be 5.5 times V ₂ or more, the air in the inner cylinder is greatly pressurized when the cap is attached, and the elastic force of the spring having the above-mentioned spring force is overcome and spherical coating is performed. Move your body back. Therefore, since the air in the inner cylinder enters the coating solution tank and pressurizes the inside, it is not necessary to press the coating solution tank with a fingertip during use. And
The application liquid tank does not need to be blow-molded with a flexible material, and can be injection-molded with a normal hard synthetic resin, so that it can be manufactured at low cost.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the embodiments shown in the drawings. In Fig. 1, an annular protrusion 2 is formed on the outer circumference of the tip.
The tip 3 is fitted in the tip opening of the front opening 2 in which 1 is formed. The tip 3 is made of stainless steel and has a shell shape. The tip of the tip 3 has a ball house with a diameter of 1.0.
A spherical applicator 4 made of a carbide ball of mmφ is rotatably held while a part of the applicator 4 projects from the tip of the tip 3. The tip 3 may be made of a metal pipe.

A small spring 5 having a spring force of 40 g is arranged in the tip 3, and the spring 5 repels the spherical applicator 4 to press it against the inward tip edge 31 of the tip 3 to apply the spherical application. The body 4 and the tip edge 31 of the tip 3 form a valve mechanism. Then, as shown in FIG.
Are connected to the coating liquid tank 1. Coating liquid tank 1
Is injection molded from normal hard synthetic resin,
The manufacturing cost is lower than that obtained by blow molding with a flexible material. Then, from the inside of the coating liquid tank 1 and the front port 2 to the chip 3, for example, the viscosity is 30 to 40.
The coating liquid is a correction liquid having a cps and high film-forming property.

The cap 6 is a bottomed cylindrical body molded of synthetic resin, and as shown in FIG. 2, an inner cylinder 7 is integrally formed therein. Six vertical ribs 8 are formed in the cap 6, and when the cap 6 is attached to the front opening 2, the vertical rib 8 contacts the outer peripheral surface of the front opening 2 to maintain the posture of the coating liquid tank 1. At the same time, the tip 3 is sealed by the inner cylinder 7 to prevent evaporation of the coating liquid.

Therefore, when the cap 6 is attached to the front opening 2, as shown in FIG.
7a comes into close contact with the annular protrusion 21 of the front opening 2, and the inside of the inner cylinder 7 becomes a sealed space. The volume of the sealed space at this time is V ₁ .
When the cap 6 is further pushed in the direction of the arrow from this state, the inner peripheral surface of the inner cylinder 7 slides in a state of being in close contact with the annular projection 21 and the volume of the sealed space in the inner cylinder 7 decreases. , The air in the inner cylinder 7 is pressurized. And the cap 6
When the abutment end 61 of the cap contacts the step surface 22 of the front end 2, the mounting of the cap 6 is completed as shown in FIG. The volume of the sealed space in the inner cylinder 7 at this time is V ₂ , but the inner diameter and length of the inner cylinder 7 and the size of the tip 3 are such that V ₁ is 5.5 times or more of V ₂ , for example, 7 times. Is designed to be. In other words, in a normal applicator, the inner volume of the inner cylinder is designed to be as small as possible, but in the present invention, conversely, the inner volume of the inner cylinder is large at the beginning, and this inner volume becomes small during the process of mounting the cap. Is designed to be.

As described above, when the mounting of the cap 6 is completed, the air pressure inside the inner cylinder 7 becomes 5.5 kg / cm ² or more. Therefore, a force of 43 g or more acts on the spherical applicator 4 having a diameter of 1.0 mmφ, but since this force is larger than the spring force of the spring 5, the spherical applicator 4 retreats and the tip edge of the tip 3 moves.
There is a gap with 31. Therefore, the air in the inner cylinder 7 enters the coating liquid tank 1 and pressurizes the coating liquid tank 1. Therefore, when the cap 6 is removed for coating, the coating liquid is sufficiently supplied to the spherical coating body 4. In other words, there is no need to press the coating liquid tank 1 with a fingertip, and the coating can be reliably applied in the manner of writing with a ballpoint pen.

[0014]

As described above, in the applicator of the present invention, in the process of mounting the cap on the front end, the sealed space inside the inner end when the annular protrusion of the front end is in close contact with the tip edge of the inner end. 4. When V _{1 is} the volume of V ₂ and V ₂ is the volume of the sealed space in the inner cylinder when the mounting of the cap is completed, V ₁ is V ₂ .
Since it is 5 times or more, the air in the inner cylinder is greatly pressurized when the cap is attached. Therefore, the spherical coating body is retracted by overcoming the elastic force of the spring having a predetermined spring force, and the air in the inner cylinder enters the coating solution tank to pressurize the inside, so that the coating solution is used during use. There is no need to press the tank with your fingertips. Further, since it is not necessary to blow mold the coating liquid tank with a flexible material, and injection molding can be performed with a usual hard synthetic resin, it is possible to manufacture at a low cost.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an applicator.

FIG. 2 is an explanatory diagram of a cap mounting process.

FIG. 3 is an explanatory diagram of completion of mounting of the cap.

[Explanation of symbols]

 1 coating liquid tank 2 front port 21 annular protrusion 3 tip 31 tip edge 4 tip spherical coating 5 spring 6 cap 7 inner cylinder 7a inner cylinder tip edge 8 vertical rib

Claims (1)

(57) [Scope of utility model registration request] 1. A spherical applicator is rotatably held in a state where a part of it is exposed from the tip of the tip, and the spherical applicator is elastically springed by a spring to the inward tip edge of the tip. The tip of the tip that contacts and holds the tip is connected to a coating solution tank, the coating solution tank is filled with a highly viscous film-forming coating solution, and an annular protrusion formed on the outer periphery of the tip is inside the cap. An applicator for closely sealing the tip to the inner peripheral surface of the cylinder, wherein the volume of the sealed space in the inner cylinder when the annular protrusion of the front end is in close contact with the tip edge of the inner cylinder in the process of mounting the cap. the V _1, the applicator, characterized in that the volume of the sealed space in the inner cylinder when completing the mounting of the cap when the V _2, V ₁ is greater than or equal to 5.5 times the V _2.