JP2577543Y2 - Tip of applicator with valve - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tip portion of a valve-equipped applicator for applying an erroneous correction liquid, a paint, an adhesive, an ink or the like. More specifically, a valve stem having a valve stem having a valve portion biased forward so that a portion of the valve stem protrudes from the distal end hole and the valve portion is pressed against a seat behind the distal end hole. It relates to the tip of the applicator.

[0002]

2. Description of the Related Art At the tip of a conventional valve-equipped applicator (see FIG.
6 ), a configuration is widely known in which a valve stem tip having an outer diameter slightly smaller than the inner diameter of the tip hole projects from the tip hole. (For example, Japanese Utility Model Application Laid-Open No. 62-35883).

Japanese Patent Application Laid-Open No. 63-72084 discloses a method of controlling an appropriate amount of a coating solution flowing out by adjusting a tip hole and an outflow gap for the purpose of uniform coating.

[0004]

However, since the conventional valve-equipped applicator has a relatively narrow handwriting width, it is necessary to repeat the application operation many times when applying over a large area, resulting in uneven application. Tends to occur.

In order to obtain a thick handwriting width, even if the tip hole or the outflow gap is increased to increase the outflow of the coating liquid based on the concept of Japanese Utility Model Application Laid-Open No. 63-72084, the handwriting on the surface to be coated is increased. Excess coating liquid is applied to both edges of the handwriting that has passed through the outflow gap between the tip of the valve stem and the tip hole, while the coating solution is applied to the center of the handwriting where the tip of the valve stem touched. Was not sufficiently supplied, and the ink was apt to be blurred.

The present invention has been made to solve the above-mentioned conventional problems, and has a relatively large handwriting width, which can apply a large area at a time without coating unevenness and blurring. It is intended to provide a tool tip.

[0007]

According to the present invention, the distal end portion 1 of the applicator with a valve urges the valve stem 3 having the valve portion 31 forward, so that a part of the valve stem 3 projects from the distal end hole 2. And the valve portion 31 is a distal end portion of the valve-equipped applicator formed by pressing the valve portion 31 against the seat portion 21 behind the distal end hole 2 and is located in front of the valve portion 31 of the valve stem 3.
Of the tip hole 12 at the tip of the tip hole 12 in contact with the surface 10 to be coated.
The valve stem 3 is formed in a flat shape parallel to the distal end surface.
A contact portion 4 is protrudingly provided on the tip end surface of the base member, and a coating liquid pool portion 5 is formed outside the contact portion 4 when the tip of the tip end hole comes into contact with the surface 10 to be coated. .

It is sufficient that at least one of the contact portions 4 protrudes from the distal end surface of the valve stem 3. Specifically, a configuration in which one is disposed at the center on the distal end surface of the valve stem 3, a configuration in which a plurality is disposed at an arbitrary position on the distal end surface of the valve stem 3, or a configuration in which the central portion is left while leaving the center of the distal end surface of the valve stem 3 A configuration in which the outer peripheral portion is removed is effective. In addition, the contact part 4 is used to apply
Point contact or slight surface contact, and it is sufficient that at least the tip of the tip hole is projected forward from at least two openings at the time of non-coating.

The contact portion 4 can also be obtained by being provided integrally with the valve stem 3 or by attaching another member to the distal end surface of the valve stem 3. And the like.

[0010]

When the front end surface of the tip hole 2 is brought into contact with the surface 10 to be coated, the contact portion 4 comes into contact with the surface 10 to be coated, and
Inside and outside the contact portion 4, a coating liquid reservoir 5 is formed between the tip end surface of the valve rod 3 and the surface 10 to be coated. At the same time, the valve rod 3 is pressed backward to release the pressure contact between the valve portion 31 and the seat portion 21, and the coating liquid is filled in the coating liquid reservoir 5. When the application surface 10 is displaced, the application liquid spreads to the portion of the application surface 10 where the contact portion 4 passes, and a thick handwriting without blurring can be obtained.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
To FIG. 5 ).

FIGS. 1 and 2 show a first embodiment of the present invention. A neck member 7 is screwed into the opening at the distal end of the flexible container 6 in which the coating liquid is stored. The distal end of the neck member 7 has a tapered shape, the distal end hole 2 is opened (inner diameter 3.7 mm), and a seat portion 21 is formed on the inner wall behind the distal end hole 2. The valve stem 3 is slidably disposed in the neck member 7 in the axial direction. The valve stem 3 is biased forward by a coil spring 9. The valve stem 3 is
A flow restricting portion 32 (outer diameter 3.5 mm) is provided at the tip, and a valve portion 31 is provided behind the flow restricting portion 32. The valve portion 31 is pressed against the seat portion 21 behind the distal end hole 2 to press the flow restricting portion. Part 32
Slightly protrudes from the tip hole 2 to the outside.

Further, a cylindrical projection (outer diameter 1 mm, height 0.3 mm) is provided in the axial direction at the center of the distal end face of the valve stem 3 to form a contact portion 4. An annular coating liquid reservoir 5 is formed in a portion surrounded by the outer periphery of the contact portion 4 and the inner periphery of the tip hole 2 when the tip of the tip hole 2 contacts the surface 10 to be coated. During coating, the depth of the coating liquid reservoir 5 in the axial direction is kept constant (here, 0.3 mm), and a coating film having a uniform thickness is obtained. Further, the coating liquid reservoir 5
Since the bottom surface (the end face of the valve stem 3) is provided in parallel with the surface 10 to be coated, the thickness of the coating film can be further uniformed.

FIG. 3 shows a second embodiment. A conical projection is provided at the center of the distal end face of the valve stem 3 to form the contact portion 4. The contact portion 4 reduces the contact area with the surface 10 to be coated by point contact, and increases the non-contact area with the surface 10 to be coated, that is, the size occupied by the coating liquid reservoir 5. Other configurations are the same as those in FIG.

FIG. 4 shows a third embodiment. A substantially hemispherical projection is provided at the center of the distal end face of the valve stem 3 to form the contact portion 4. The contact portion 4 is smoothly brought into point contact with the surface 10 to be coated.

FIG. 5 shows a fourth embodiment. The contact portion 4 formed of a substantially cylindrical projection is formed of a separate member, and the projection is fixed to the center of the distal end face of the valve stem 3.

[0017]

According to the present invention, a thick handwriting without blurring can be obtained by the above configuration, and a wide area can be applied at a time without causing uneven application.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional view of a main part of the first embodiment of the present invention.

FIG. 3 is an enlarged vertical sectional view showing a main part of a second embodiment of the present invention.

FIG. 4 is an enlarged vertical sectional view showing a main part of a third embodiment of the present invention.

FIG. 5 is an enlarged vertical sectional view of a main part showing a fourth embodiment of the present invention.

FIG. 6 is an enlarged longitudinal sectional view of a main part showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tip part of valve-equipped applicator 2 Tip hole 21 Seat part 3 Valve stem 31 Valve part 32 Flow rate regulation part 4 Contact part 5 Application liquid pool part 6 Container 7 Neck member 8 Spring seat 9 Coil spring 10 Coating surface

Claims (1)

(57) [Scope of request for utility model registration] 1. A valve unit of the valve stem (3) having a (31) and biased forward, a portion of the valve rod (3) are adapted to protrude from the front end hole (2), said valve unit (31 ) and a front end hole (2) tip of the rear seat (21) made in pressure contact with the valved applicator, the forward of the front end surface of the valve the valve portion of the rod (3) (31)
Of the tip end hole (12) at the mouth of
The valve stem is formed in a flat shape parallel to the distal end surface, and
A contact portion ( 4 ) is protruded from the tip surface of ( 3 ) to form a tip hole.
(2) when the mouth is in contact with the coated surface (10), wherein the contact portion (4) the coating liquid reservoir portion on the outer side (5) tip of the formed valved applicator comprising a (1).