JPH1170784A - Applicator with valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize the sure enclosing properties of a valve mechanism inside a front shaft by a method wherein a seat part is formed on an annular projecting part integrally formed rear at the rear end of the tip hole of the front shaft. SOLUTION: An annular projecting part 9 is formed near the rear end of the tip hole 4b of a front shaft integrally with the front shaft. A seat part 9a abutting against the valve part 6b of a valve body 6 is formed near the apex of this annular projecting part 9. The valve part 6b and the seat part 9a close a valve through the forward energization of the valve body 6 for urging, resulting in ensuring the enclosing properties of the valve. The valve has a valve mechanism, which opens the valve by releasing the urging through the retreating of the valve body 6. Further, the projecting part 9 must be annular, since the seat part 9a is formed on the portion of the projecting part 9. Furthermore, the wall thickness of the projecting part 9 is preferably made to be uniform in order to prevent a sink mark from developing due to the thermal lowering after the injection molding of the valve.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a correction fluid, cosmetics,
The present invention relates to a valve-equipped applicator incorporating a coating liquid such as a pigment-based marking ink.

[0002]

2. Description of the Related Art Conventionally, as a valve-coated applicator using a coating liquid such as the above-mentioned correction liquid, cosmetics, pigment-based marking ink, etc., a seat is formed behind the rear end of a front end hole, and an application portion is formed from the front end hole. And a front shaft having a valve mechanism consisting of a valve body urged forward by a resilient body to press the valve portion against the seat portion, and a bottomed bottom having an interior formed as a coating liquid storage chamber. The front cylinder is fixed to a front end opening of a shaft cylinder, and a detachable cap is attached to the front shaft. The applicator with a valve as described above applies the application liquid by the following mechanism. That is, by pressing the application portion of the valve body against the object to be coated, the valve body retreats, the pressure contact between the valve portion and the seat portion is released, and the valve is opened. At the same time, by pressing the bottomed barrel or pressurizing the inside thereof, the coating solution inside flows out of the front shaft tip hole. Then, the coating liquid is applied by extending the front end surface (application surface) of the front shaft. By the way, in the conventional applicator with a valve, the shapes of the front shaft and the valve body are appropriately designed according to the use at the time of using the applicator. For example, when applying the application liquid to the details, the front end of the front shaft or the valve body is formed into a thin column or cone, and when applying the application liquid over a large area, the front end of the front shaft or the valve body is used. Has a thick cylindrical or conical shape, and the front end surface of the front shaft has a rectangular, triangular, or other complicated shape.

[0003]

By the way, in the valve-equipped applicator, the front shaft is often formed by injection molding using a resin material. At this time, for application to a large area, the front end of the front shaft is made into a thick conical shape, or
When the tip surface of the front shaft has a rectangular, triangular, or complex shape, such as a complex shape, the cross-section of the material may be irregular due to heat shrinkage due to heat drop after molding, the so-called sink mark. In the thickness difference of a certain outer shape, the dimensional shrinkage is large in the thick part and the dimensional shrinkage is small in the thin part, and the surface shape is not formed uniformly. There is a problem that the surface shape of the seat is difficult to manufacture with high accuracy, and the valve sealing becomes insufficient.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a valve-equipped applicator having a deformed front-shaft tip cross-sectional shape, in which the valve mechanism on the inner side of the front shaft is reliably sealed.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided a bottomed barrel having an interior formed as a coating liquid accommodating chamber, and a sectional shape of a leading end fixed to an opening of a leading end of the bottomed barrel. And a valve body slidably disposed within the front shaft, resiliently urged forward to project an application portion from a front end hole of the front shaft, and In the valve-equipped applicator in which the seat portion formed at the rear end of the front end hole and the valve portion of the valve body are in contact with each other to form a valve mechanism, the seat portion is positioned rearward of the front end rear end of the front hole. The gist of the present invention is a valve-equipped applicator characterized in that the applicator is formed on an integrally formed annular projection.

[0006]

In the valve-equipped applicator according to the present invention, an annular projection is formed integrally with the front shaft at the rear end of the front shaft tip hole, and the annular projection is formed with the inner wall of the front shaft. Since there is a gap between the front shaft walls, there is no influence of the wall portion of the front shaft in the heat drop after injection molding, and the shrinkage is uniform, so that sink marks do not occur. Therefore, in the valve-equipped applicator according to the present invention, the seat formed on the projection is formed as a smooth surface having no depression such as sink marks, so that the valve is sealed well.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail. First Embodiment FIGS. 1 to 3 show a first embodiment. FIG. 1 is a longitudinal sectional view showing the first embodiment, FIG. 2 is an enlarged sectional view of a main part of FIG. 1, and FIG. 3 is a top view of the first embodiment. Reference numeral 1 designates a bottomed cylinder in which the interior is a coating liquid storage chamber 2 for a correction liquid, a cosmetic liquid, a pigment-based marking ink, or the like. The shaft cylinder 1 is made of a flexible material such as a synthetic resin so that the side surface can be pressed to discharge the application liquid. However, when a conventionally known pressure pump mechanism is attached to the barrel 1 to pressurize the application liquid storage chamber 2, the barrel 1 may be made of a rigid material such as metal.

A rod-shaped stirrer 3 for stirring and re-dispersing an insoluble substance such as a settled colorant is disposed in the coating liquid storage chamber 2 of the barrel 1. This stirrer 3
Should be able to re-disperse the precipitated insoluble material well,
It is preferable to use a material having a large specific gravity such as a metal.
The shape and number are arbitrary, and may be appropriately selected according to the type of the coating liquid to be used and the size of the valve-equipped coating tool (coating liquid storage chamber). In the tip opening 1b of the shaft cylinder 1,
A front shaft 4 having a through hole is fixed by an appropriate means such as screwing, bonding, or press fitting. A cap 5 for preventing drying of the application destination is detachably attached to the front shaft 4 by appropriate means such as fitting or screwing.

The front shaft 4 has a rectangular front end surface 4a so that the coating solution can be applied widely and can be applied evenly. However, the valve-equipped applicator according to the present invention applies a large area, or has a plurality of application widths, so that the front end surface of the front shaft, that is, the cross-sectional shape of the front end portion is a flat end shape, a rectangle, a triangle, Alternatively, the shape is a so-called irregular shape such as a complicated shape, and is not limited to the shape of the present embodiment. Further, although the front end surface of the front shaft is shown as a smooth surface in this embodiment, various configurations can be adopted without departing from the gist of the present invention. For example, by implanting hairs on the front shaft tip surface like a brush, or by forming a large number of flat protrusions having flexibility on the front shaft tip surface, to improve the feel during application, Examples of the method include preventing the occurrence of uneven coating and attaching a thin tongue to one side of the front shaft so that a coating film having a uniform thickness can be formed.

A valve body 6 is slidably disposed inside the front shaft. The valve body 6 includes a coating portion 6a at the tip and a valve portion 6b.
And is urged forward by an elastic body 7 composed of a coil spring, and makes the application portion 6 a protrude from the front end hole 4 b of the front shaft 4.

Reference numeral 8 is a center shaft having a through hole 8a. The front end of the center shaft 8 serves as a receiving portion for the elastic body 7, and the through hole 8 a is inserted into the rear portion of the valve body 6 while securing a coating liquid conducting path. ,
This is to prevent the center deviation of the valve element 6 when sliding.

The front shaft 4 is formed integrally with an annular projection 9 behind the rear end of the distal end hole 4b. Near the top of the annular projection 9, the valve portion of the valve body 6 is provided. A seat 9a is formed to be in contact with 6b. The valve 6b and the seat 9
“a” forms a valve mechanism that closes when the valve element 6 is urged forward and presses against it, and opens when the valve element 6 retreats and pressure contact is released. Since the projection 9 is a portion where the seat 9a is formed, the projection 9 needs to be annular. However, the annular shape may be not only circular but also elliptical or oblong. Further, the protrusion 9 is provided to prevent sink from occurring due to heat drop after injection molding.
It is preferable to make the thickness uniform. The height of the annular projection 9 from the rear end of the front end hole 4b to the rear end of the projection is determined by the difference between the outer diameter of the front shaft 4 and the inner diameter near the rear end of the front end hole 4b. Not be affected by shrinkage
It is preferable to set it higher. However, when the height of the projection 9 increases, the distance from the valve mechanism to the tip of the tip hole 4b increases, and the coating liquid that has accumulated during this time contacts the outside air and dries, causing the coating liquid to clog. Because the height tends to disappear, the height depends on the shape and dimensions of the front shaft,
It is necessary to set in consideration of various conditions such as the size of the tip hole and the properties of the coating solution.

Second Embodiment FIG. 4 is a vertical sectional view of a second embodiment. Example 2 is Example 1
Is the same as that of the first embodiment except that the annular projection 19 is formed to be thin and deformable. In the applicator with a valve according to the present embodiment, since the annular projection 19 is deformable, the close contact between the valve portion 6b of the valve body 6 and the seat portion 19a is improved, and the sealing of the valve is further ensured. Further, in the applicator with a valve according to the present embodiment, even if sedimentary foreign matter is present in the application liquid, the foreign matter accumulates on the outer peripheral portion of the annular projection 19,
Since it does not enter between the valve portion 6b and the seat portion 19a, there is also an advantage that valve sealing is not easily disturbed.

Third Embodiment FIG. 5 is a longitudinal sectional view of a third embodiment. Example 3 is Example 2
In the above, the shape of the opening of the annular projecting portion 29 was made to match the shape of the valve portion 6b of the valve body 6, and the rear part of the valve body 6 was formed as a spiral resilient portion instead of the resilient body. Other than the above, it is the same as the second embodiment. The valve-equipped applicator according to the present embodiment includes a seat 29 a formed at the opening of the projection 29 and the valve 6 of the valve body 6.
Since the valve b is sealed by surface contact, the close contact with the valve portion is further improved, and the valve sealing is ensured.

Embodiment 4 FIG. 6 is a longitudinal sectional view of Embodiment 4. Example 4 is Example 1
In this embodiment, the structure is the same as that of the first embodiment except that a recess 6c into which the tip of the annular projection 39 can be inserted is formed in the valve portion 6b of the valve body 6. The applicator with a valve according to the present embodiment has a protrusion 39
Since the seat 39a at the distal end enters and fits into the recess 6c of the valve body 6, the pressure contact position between the valve 6b and the seat 39a always becomes a fixed position. 3
9a does not occur, and the valve is securely sealed.

Embodiment 5 FIG. 7 is a longitudinal sectional view of Embodiment 5, and FIG. 8 is a side view of Embodiment 5. The fifth embodiment is different from the first embodiment in that a thin projection 49b is provided on the inner wall of the annular projection 49 so as to face inward.
Furthermore, it is the same as the first embodiment except that protrusions 10 are formed at both ends of the front shaft 4. In the valve-equipped applicator according to the present embodiment, since the tip of the thin projection 49b formed on the inner wall of the projection 49 is used as the seat 49a, the seat 49a is not affected by heat shrinkage after injection molding, and the accuracy of the seat 49a is improved. Because it is well formed, the valve sealability is ensured. Also, the protrusion 10 on the front end surface of the front shaft is
The projection is bent to absorb the change even when the holding angle of the application tool changes, so that the tip of the projection always contacts the surface to be corrected, even if the holding angle of the application tool changes. it can. Therefore, the spread of the coating liquid outside the projections can be suppressed, and the coating liquid can be applied with a constant width, so that problems of coating properties such as uneven coating width and unevenness of the coating surface due to re-application can be prevented.

[0017]

The valve-equipped applicator of the present invention has a front shaft having a modified cross-sectional shape at the front end, but an annular projection is formed integrally with the front shaft at the rear end of the front shaft front end hole. Since a gap is provided between the inner wall of the front shaft and the projection, the seat provided on the projection is not affected by shrinkage of the material due to heat drop after injection molding, so-called sink marks, and its surface is not affected by sink marks. Since the shape is formed as a smooth shape without depressions such as sink marks, it is an excellent one that can prevent the problem of insufficient valve sealing.

[Brief description of the drawings]

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

FIG. 2 is an enlarged vertical sectional view of a main part of FIG.

FIG. 3 is a top view of the first embodiment.

FIG. 4 is a longitudinal sectional view of a second embodiment.

FIG. 5 is a longitudinal sectional view of a third embodiment.

FIG. 6 is a longitudinal sectional view of a fourth embodiment.

FIG. 7 is a longitudinal sectional view of a fifth embodiment.

FIG. 8 is a side view of the fifth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shaft cylinder 2 Coating liquid storage chamber 3 Stirrer 4 Front shaft 5 Cap 6 Valve body 6b Valve part 7 Repellent body 8 Center shaft 9, 19, 29, 39, 49 Annular protrusion 9a, 19a, 29a, 39a, 49a Seat

Claims (1)

[Claims] 1. A bottomed barrel having an interior formed as a coating liquid storage chamber, a front shaft fixed to a leading end opening of the bottomed barrel, and having a tip with a modified cross-sectional shape; The front shaft has a valve body which is slidably disposed therein, is resiliently urged forward and projects the application portion from the front end hole of the front shaft, and is formed behind the rear end of the front end hole of the front shaft. In the valve-equipped applicator in which the seat portion and the valve portion of the valve body are in contact with each other to form a valve mechanism, an annular protrusion in which the seat portion is integrally formed behind the rear end of the front end hole of the front shaft. An applicator with a valve, wherein the applicator is provided with a valve.