JP3598682B2 - Tip valve type applicator with valve - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a tip valve type valve-equipped applicator having a built-in application liquid containing an insoluble substance which settles with time, such as a correction liquid, cosmetics, and pigment-based marking ink.
[0002]
[Prior art]
Conventionally, as a tip-valve-type valve-equipped applicator using the above-described coating solution, an applicator tip having a seat formed inside a rear end of a tip hole, an applicator projecting from the tip 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 portion is fixed to the front end opening of a shaft cylinder having an interior formed as a coating liquid storage chamber. The front shaft has a small-diameter hole capable of regulating the flow rate of the coating liquid between the outer wall of the valve body and the inner wall of the front shaft, and a front hole and a rear hole communicating with each other through the small-diameter hole. One in which a through hole formed is formed is known.
[0003]
A coating tip portion having a seat formed inside the rear end of the tip hole, and a valve body which is urged forward by a resilient body so as to project the coating portion from the tip hole and press the valve portion against the seat portion. In a valve-equipped applicator having a front shaft having a valve mechanism consisting of: It is controlled by the opening amount of the valve part and the valve part of the valve body that moves rearward when the application destination is pressed against the surface to be applied. However, the control of the application liquid discharge amount is based only on the opening amount of the seat portion and the valve portion, by pressing the barrel to discharge the application liquid from the pen tip, or by pressing using a cap or the like. Since the increased pressure inside the barrel is directly applied to the coating liquid, it is very difficult to control a small amount of discharge required for fine correction.
[0004]
Therefore, this type of tip valve type valve-equipped applicator can regulate the flow rate of the application liquid between the outer wall of the valve element and the inner wall of the front shaft inside the front shaft in order to more easily control the discharge amount. A through hole including a small hole and a front hole and a rear hole communicating with each other through the small hole is formed. In forming the small-diameter hole portion, a method of forming a flange portion also serving as a receiving portion of the elastic body, a method of narrowing the inside of the through hole, and the like have been adopted.
[0005]
[Problems to be solved by the invention]
By the way, when a small-diameter hole is formed in the through-hole of the front shaft as in the tip valve type valve-equipped applicator, a capillary action acts between the inner wall of the small-diameter hole and the outer wall of the valve body, and the application destination portion is formed. When left facing upward, the coating liquid in the front hole does not move to the coating liquid storage chamber but remains in the front hole. In addition, coating solutions containing insoluble substances that settle with time, such as pigments, such as correction liquids, cosmetics, and pigment-based marking inks, may cause the insoluble substances to settle if stored in a certain direction. In addition, the viscosity of the lower layer is increased, the fluidity is deteriorated, and a hard cake layer is formed. Therefore, the sedimentation due to the insoluble substance in the application liquid remaining in the front hole when the application destination is stored with the application destination part facing upward is such that the capillary action between the inner wall of the small diameter hole and the outer wall of the valve body acts. Stays in a very small gap. As described above, when the settled insoluble substance stays in the small-diameter hole portion of the through-hole, a large amount of time is required to press the main body and the internal pressure in order to discharge the coating liquid, and in some cases, recovery is not possible. It becomes possible and the application liquid may not be discharged.
[0006]
In the present invention, even if the coating portion is kept for a long time with the application portion facing upward, the sedimentation due to the insoluble substance does not stay in the small-diameter hole portion of the through-hole in the front shaft, and the coating remaining in the front hole of the front shaft is prevented. It is an object of the present invention to provide a tip valve type valve-equipped applicator capable of positively moving a liquid into a rear hole of a front shaft and a coating liquid accommodating chamber, thereby preventing problems such as a decrease in the discharge of the coating liquid and an inability to discharge the liquid. And
[0007]
[Means for Solving the Problems]
The present invention is directed to an application tip portion having a seat portion formed inside a rear end of the tip hole, and an application portion protruding from the tip hole and being urged forward by a resilient body so as to press the valve portion against the seat portion. A front shaft having a valve mechanism composed of a valve body fixed to a front end opening of a shaft cylinder having an inside serving as a coating liquid storage chamber, wherein the front shaft has an outer wall and a front shaft inner wall of the valve body. And a small-diameter hole capable of regulating the flow rate of the coating liquid between the and the valve-equipped applicator having a through-hole formed by a front hole and a rear hole communicating with each other through the small-diameter hole, The gist of the present invention is a tip valve type valve-equipped applicator characterized in that an axial capillary groove is continuously formed in a small diameter hole portion and a rear hole portion of an inner wall of a front shaft through hole.
[0008]
[Action]
The tip valve type valve-equipped applicator according to the present invention includes a shaft that promotes the movement of the application liquid to a small-diameter hole and a rear hole of a front shaft through-hole that connects the front hole and the rear hole or the application liquid storage chamber. having formed continuously in the direction of capillary grooves, when upward coating destination unit, so before application liquid in the front hole of the shaft is moved to the rear aperture or the coating liquid storage chamber, and long-term storage However, the insoluble substance does not settle in the small-diameter hole portion of the through hole in the front shaft, so that problems such as a decrease in the discharge of the coating liquid and an inability to discharge can be prevented as much as possible.
[0009]
【Example】
Hereinafter, the present invention will be described in detail.
Example 1
FIG. 1 is a longitudinal sectional view showing Example 1, and FIG. 2 is an enlarged view of a main part of FIG. 3 is a cross-sectional view taken along line BB of FIG. 2, and FIG. 4 is a cross-sectional view taken along line CC of FIG. Reference numeral 1 denotes 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 pressurizing 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.
[0010]
A rod-shaped stirrer 3 that stirs and re-disperses an insoluble substance such as a settled colorant is disposed in the coating liquid storage chamber 2 of the barrel 1. The stirrer 3 is preferably made of a material having a large specific gravity, such as a metal, so that the settled insoluble substance can be satisfactorily redispersed. The shape and number are arbitrary, and may be appropriately selected according to the type of the coating liquid to be used, the size of the valve-equipped coating tool (coating liquid storage chamber), and the like. A front shaft 5 having a through hole 4 is fixed to the opening of the shaft cylinder 1 by an appropriate means such as screwing, bonding, or press-fitting. Further, at the tip of the front shaft 5, a coating destination for discharging the coating liquid is formed. The application tip portion has a tubular tip body 6 having a seat portion 6b formed inside the rear end of the tip end hole 6a, and an application portion 7a protruding from the tip end hole so as to press the valve portion 7b against the seat portion 6b. And a valve body 7 urged by an elastic body 8 formed of a coil spring. When it is desired to obtain a thin coating trace, it is more advantageous to use a tube having a small diameter. However, it is also possible to form the tubular torso 6 from the same material as the front shaft 5, so that the tubular torso 6 can be formed integrally with the front shaft 5. The seat portion 6b and the valve portion 7b form a valve mechanism that closes when the valve element 7 is urged forward and presses against it, and opens when the valve element 7 retreats and the pressure contact is released. ing.
[0011]
The through hole 4 is formed such that the front hole 41b and the rear hole 41c communicate with each other via the small diameter hole 41a. The small-diameter hole 41a of the communication hole 4 is inserted with a rear portion of the valve body 7 in order to control the discharge amount of the application liquid, and a small gap between the inner wall of the small-diameter hole 41a and the outer wall behind the valve 7 is provided. Is formed. The design of the small gap between the inner wall of the small-diameter hole portion 41a and the outer wall behind the valve element 7 may be appropriately adjusted by, for example, increasing the diameter for small-area coating and increasing the diameter for wide-area coating, depending on the method of use. Just set it.
[0012]
A capillary groove 91 is provided on the inner wall of the small diameter portion of the small diameter hole 41a and the rear hole 41c so as to be continuous in the axial direction. The capillary groove 91 has a design opening amount (cross-sectional area) of a small gap between the inner wall of the small diameter portion of the small diameter hole 41a and the small diameter portion of the rear hole 41c and the outer wall behind the valve body 7 so that the coating liquid can be controlled. It is good to make the size that does not change. Further, the capillary groove 91 may be provided on a part of the inner wall of the small diameter portion of the small diameter hole 41a and the rear hole 41c, but is preferably provided on the entire surface.
[0013]
In the tip-valve-type valve-equipped applicator of this embodiment, when the applicator is stored with the applicator tip facing upward, the application liquid in the front hole 41b of the front shaft is flushed with the inner wall of the small diameter hole 41a of the front shaft and the valve body. 7 The rear portion of the front shaft where the coating liquid falls by its own weight due to the capillary groove 91 in the small diameter hole portion 41a and the small diameter portion of the rear hole portion 41c without staying in a small gap with the rear outer wall, and the coating liquid does not remain. Guided by the hole 41c, all the coating liquid in the front hole 41a of the front shaft can be returned to the rear hole 41c of the front shaft or the coating liquid storage chamber 2. Therefore, the undissolved substance in which the coating liquid has settled does not stay in the through hole 4 of the front shaft, and a large pressing and an internal pressurization to the main body for discharging the coating liquid are not required for a long time. Recovery is not impossible.
[0014]
Example 2
FIG. 5 is a cross-sectional view of a main part of the second embodiment, and FIG. 6 is a cross-sectional view of DD. The second embodiment is different from the first embodiment in that the rear hole 42c has a tapered shape in which the diameter is reduced forward, and the capillary groove 92 is continuous with the entire small diameter hole 42a and the rear hole 42c (up to the rear end of the front shaft). It is the same as Example 1 except that it is formed. The applicator with a valve of the tip valve type according to the present embodiment has a longer capillary section than the applicator with a valve of the tip valve type of the first embodiment, so that a stronger application liquid guiding force can be obtained, and the through-hole in the front shaft Since the capillary portion 92 is provided on the entire rear side of the small-diameter hole portion 42a of 42, the coating liquid in the through hole 42 of the front shaft can all be returned to the coating liquid storage chamber (not shown). It is possible to completely eliminate the settled insoluble substance of the coating solution in the front shaft.
[0015]
【The invention's effect】
In the tip valve type valve-equipped applicator according to the present invention, an axial capillary groove for facilitating the movement of the application liquid is continuously arranged in the small diameter hole portion and the rear hole portion of the through hole of the front shaft. Since the insoluble material of the coating liquid does not settle in the small-diameter hole portion of the communication hole of the shaft, it is possible to prevent the occurrence of problems such as a decrease in the discharge of the coating liquid and an inability to discharge the liquid as much as possible.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a first embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of a main part of FIG.
FIG. 3 is a cross-sectional view taken along line BB of FIG. 2;
FIG. 4 is a cross-sectional view taken along line CC of FIG. 2;
FIG. 5 is a longitudinal sectional view of a main part of a second embodiment.
FIG. 6 is a cross-sectional view taken along line DD of FIG. 5;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Shaft cylinder 2 Coating liquid storage chamber 3 Stirrer 4 Through hole 42 Through hole 5 Front shaft 6 Tubular tip 6a Tip hole 6b Seat 7 Valve 7a Coating 7b Valve 8 Resilient body 91 Capillary groove 92 Capillary groove 41a Small diameter hole 42a Small diameter hole 41b Front hole 4c Rear hole 41c Rear hole 42c Rear hole

Claims (1)

A coating tip portion having a seat formed inside the rear end of the tip hole, and a valve body which is urged forward by a resilient body so as to project the coating portion from the tip hole and press the valve portion against the seat portion. A front shaft having a valve mechanism consisting of: is fixed to a tip end opening of a shaft cylinder having an inside serving as a coating liquid storage chamber, and the front shaft is disposed between an outer wall of the valve body and a front shaft inner wall. In a valve-equipped applicator in which a small-diameter hole capable of controlling the coating flow rate and a through-hole formed of a front hole and a rear hole communicating with each other through the small-diameter hole are formed, A tip-type valve-equipped valve applicator characterized in that an axial capillary groove is continuously formed in a small diameter hole portion and a rear hole portion of an inner wall.

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