JP2016087289A - Liquid applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid applicator that can accelerate drying after an application part is washed with water.SOLUTION: A liquid applicator 1 comprises: a brush-like application part 8 that is supported by a tip shaft 4 arranged at a front end part of a shaft tube 2; a liquid bottle 3 that is fitted so as to be axially movable in the shaft tube and in which application liquid is packed; and a valve set 27 that is arranged between the liquid bottle 3 and the application part 8, is opened by the axial movement of the liquid bottle 3, and supplies the application liquid packed in the liquid bottle to the application part 8. In a cap 5 that covers the application part 8, an opening 5b that makes the inside and outside of the cap communicate with each other is formed. In the tip shaft 4 that supports the application part 8, vent holes 4g are axially formed.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a liquid applicator configured to supply application liquid such as cosmetics and cleaning liquid from a liquid bottle to an application portion formed by, for example, a brush.

  Conventionally, a liquid application that is provided with a brush-like application part such as a fiber bundle at the tip, and supplies the application part by infiltrating the application part from a liquid bottle containing an application liquid such as liquid cosmetics or cleaning liquid Ingredients are provided. And about this kind of liquid applicator, various improvement and device are made | formed conventionally.

  In this type of liquid applicator, the function of a brush made of, for example, a fiber bundle that constitutes the applicator deteriorates as it is used repeatedly. For this reason, a liquid applicator devised so that the brush can be easily replaced is disclosed in Patent Document 1.

Further, Patent Document 2 discloses a liquid applicator configured such that a coating liquid is supplied from a liquid bottle to a brush-shaped coating unit via a valve set by knocking a liquid bottle containing the coating liquid in the axial direction. Is disclosed.
Furthermore, by adding an improvement to the valve set disposed between the liquid bottle disclosed in Patent Document 2 and the brush-like application part, and by providing a double seal part on the valve seat constituting the valve set, Patent Document 3 discloses a liquid applicator devised to prevent liquid leakage at the valve set portion.

Japanese Patent No. 4236278 Japanese Utility Model Publication No. 1-122886 JP 2010-131097 A

  By the way, in the conventional liquid applicator disclosed in each of the above patent documents, a cap capable of covering the brush-shaped applicator is detachably attached to the front end portion of the shaft tube, and the liquid applicator is not used. In this state (storage state), the cap-like application part is protected in a sealed state by the cap.

Therefore, even after the use of the liquid applicator, even when the brush-like application part is washed and stored, for example, the application part is sealed in a sealed state by the cap. It takes a considerable amount of time.
In this case, a valve set is generally arranged between the liquid bottle and the application part, and the application liquid does not leak into the application part, but the application part is dried after washing with water by sealing the cap. For this reason, a part of the coating solution remaining in the coating part may rot or may cause moldyness in the coating part.

  The present invention has been made paying attention to the above-mentioned problems in the conventional liquid applicator, and avoids sealing with the cap that protects the application part when the liquid applicator is not used (in the storage state). And a liquid applicator capable of preventing the occurrence of unsanitary problems such as the above-described decay and mold generated in the applicator. This is a problem.

  The liquid applicator according to the present invention, which has been made to solve the above-mentioned problems, is mounted on the front end portion of the shaft tube, which is supported by the tip shaft, and in the shaft tube so as to be movable in the axial direction. A liquid bottle filled with a coating liquid, and disposed between the liquid bottle and the coating unit, and opened by the movement of the liquid bottle in the axial direction to fill the liquid bottle. A liquid applicator provided with a valve set for supplying the applied liquid to the application part, the cap attached to the front end of the front shaft or the shaft tube so as to be detachable so as to cover the application part An opening for communicating the inside and the outside of the cap is formed, and a vent hole is formed in the tip shaft that supports the coating portion.

In this case, it is desirable that the opening for communicating the inside and outside of the cap is formed on the top surface of the front end portion in the axial direction of the cap.
And in one preferable form, the structure by which the discontinuous convex part along the said opening was integrally formed with the cap around the said opening formed in the top | upper surface of the said cap is employ | adopted. Moreover, the structure by which the groove part which goes to the circumferential direction from the said opening continuously in the said opening formed in the said cap's top surface was formed in the said top surface is also employable.

On the other hand, it is desirable that the vent hole formed in the tip shaft communicates with a space portion formed between the inner peripheral surface of the tip shaft and the application portion.
More preferably, a plurality of vent holes formed in the front shaft are formed around the application portion with the application portion in the center, and each of the plurality of vent holes is formed on the inner periphery of the front shaft. A configuration communicating with a space formed between the surface and the application portion is employed.

  In addition, the application part supported by the tip shaft can suitably adopt a form in which a large number of fibers are bundled to form a brush shape.

According to the liquid applicator having the above-described configuration, the cap that covers the application portion is formed with an opening that allows communication between the inside and the outside of the cap. Thereby, after use of the liquid applicator, the water remaining in the application part that has been washed with water and drained can be effectively evaporated through the opening formed in the cap, thereby quickly applying the application part. Can be dried.
Therefore, it is possible to effectively prevent the occurrence of unsanitary problems such as a part of the coating liquid remaining in the coating part being spoiled or generating mold in the coating part.

  Further, a vent hole is formed in the axial direction on the tip shaft that supports the coating portion, and the vent hole communicates with a space portion formed between the inner peripheral surface of the tip shaft and the coating portion. Thereby, it can contribute to promoting the evaporation drying of the water after the water washing which remains in the said application part more.

It is the perspective view which showed the external appearance structure of the liquid applicator which concerns on this invention. It is sectional drawing of the state which fractured | ruptured the liquid applicator shown in FIG. 1 in the center part. It is sectional drawing of the state which advanced the liquid bottle within the axial cylinder. It is an expanded sectional view of a cap. It is the front view which expanded and showed the tip axis. It is sectional drawing seen from the AA line in FIG. 5 in the arrow direction. It is the top view which showed the 2nd form of the cap, the front view, and the left view. It is the top view which showed the 3rd form of the cap, the front view, and the left view. It is the top view which showed the 4th form of the cap, the front view, and the left view.

A liquid applicator according to the present invention will be described based on an embodiment shown in the drawings.
As shown in FIG. 1, the entire liquid applicator 1 is formed in a cylindrical body having an outer diameter along the longitudinal direction that is substantially the same, and functions as a gripping portion of the liquid applicator 1. The rear end portion of the shaft tube 2 is opened, and the liquid bottle 3 is mounted in the shaft tube 2 from the rear portion.

A front shaft 4 is attached to the front end portion of the shaft cylinder 2 to support a brush constituting a coating portion described later, and a cap 5 that protects the brush is attached to the base end portion of the front shaft 4 so as to be detachable. It is attached.
In addition, an opening 5 b that communicates the inside and outside of the cap 5 is formed at the center of the top surface 5 a at the tip of the cap 5.

2 and 3 show the overall configuration of the liquid applicator 1 in a cross-sectional view. A small-diameter portion 2a having a reduced outer diameter is formed at the front end portion of the shaft cylinder 2, and the outer periphery of the small-diameter portion 2a. A male screw 2b is applied to the surface.
The rear end portion of the shaft cylinder 2 is opened as described above, and the liquid bottle 3 is mounted from the rear end portion. Then, as shown in FIG. 3, a cutting portion 2 c having a partially shortened axial length is provided so that the rear end portion (bottom portion) of the liquid bottle 3 can be knocked and moved forward in the shaft cylinder 2. It is formed at the rear end of the shaft cylinder 2.

The tip shaft 4 is attached to the front end portion of the shaft tube 2 using a male screw 2 b formed at the front end portion of the shaft tube 2.
As shown in FIGS. 5 and 6, the outer shape of the tip shaft 4 is a truncated cone shape, and the inner diameter is gradually reduced from the base end portion toward the tip end portion. A shaft hole 4a is formed. Then, on the inner peripheral surface of the large-diameter shaft hole 4a formed on the base end portion side of the front shaft 4, a female screw 4b that is screwed into the male screw 2b formed on the front end portion of the shaft tube 2 is formed. ing.

  That is, when the front shaft 4 is screwed to the male screw 2b on the shaft tube 2 side using the female screw 4b of the front shaft 4, the liquid introduction tube 6 described later, the brush 8 constituting the application portion, and the like are shaft tubes. It is comprised so that it may attach to two front-end parts simultaneously.

As shown in FIG. 6, the front end portion of the large-diameter shaft hole 4a in which the female screw 4b is formed is provided with an annular step portion 4c formed by reducing the inner diameter. The portion 4c functions to position and attach the liquid introduction tube 6 and the brush holder 9 described later to the front end portion of the shaft tube 2.
Further, as shown in FIG. 5, a large-diameter male screw 4d is formed on the outer peripheral surface near the base end portion of the front shaft 4. The large-diameter male screw 4d comes into contact with the female screw 5c formed in the opening of the cap 5 shown in FIG. 4, so that the cap 5 is attached to and detached from the front shaft 4 as shown in FIGS. Installed as possible.

A liquid introduction pipe 6 is mounted in the front end opening having a small diameter of the shaft cylinder 2, and a flange 6 a formed at the front end of the liquid introduction pipe 6 is formed in the front end opening of the shaft cylinder 2. The liquid introduction tube 6 is positioned with respect to the shaft tube 2 by abutting in the axial direction.
Further, a liquid guide pipe 7 protruding forward is attached to the inner peripheral surface of the liquid introduction pipe 6, and this liquid guide pipe 7 is applied to the brush 8 by the fiber bundle constituting the application portion. Fulfill the function of supplying.

The brush 8 constituting the application part is made of PBT having an outer diameter of around 0.07 mm or nylon, and is preferably configured by bundling a large number of fibers whose tip part is formed into a tapered shape.
The rear end of the brush 8 is heat-sealed to form a ridge, and the brush 8 is locked by hooking the ridge at the rear end of the brush 8 with a brush holder 9 formed in a ring shape. The application portion (brush) 8 is located at the front end of the shaft tube 2 by the flange portion 9a formed integrally with the ring-shaped brush holder 9 coming into contact with the annular step portion 4c formed on the tip shaft 4. Supported by the department. Further, a substantially central portion in the longitudinal direction of the application portion 8 by the brush is supported by a small-diameter brush support hole 4e formed at the distal end portion of the front shaft 4 shown in FIG.

Further, an inner peripheral surface 4f having a slightly larger inner diameter than the brush support hole 4e is formed near the base end portion of the brush support hole 4e shown in FIG.
The inner peripheral surface 4f forms a gap between the front shaft 4 and the application part (brush) 8, and a space part by this gap is indicated by reference numeral 11 in FIGS.

  The front shaft 4 is provided with four vent holes 4g in the axial direction so that the application portion (brush) 8 is at the center and the circumference thereof is equally spaced. 4 g communicates with the space portion 11 formed between the front shaft 4 and the application portion (brush) 8 at the bottom thereof.

On the other hand, the above-described liquid bottle 3 has a bottle stopper 21 attached to the opening thereof, and has an annular shape having a spring receiver 22 and a collar between the bottle stopper 21 and the opening edge of the liquid bottle 3. The flanges of the formed valve seat 23 are attached to each other.
The front half of the spring receiver 22 is formed in a cylindrical shape in the axial direction, and a slit 22a is formed along the axial direction in the rear half of the axial direction. An annular spring receiving portion 22b is attached to the rear end portion.

  A valve stem 24 is accommodated in the spring receiver 22 so as to be slidable in the axial direction. The valve stem 24 slides along the cylindrical inner surface of the spring receiver 22 on the front end side of the valve stem 24 to apply the coating liquid. An annular seal piece 24 a for extruding the valve is formed integrally with the valve stem 24. A coiled valve spring 25 is disposed immediately after the seal piece 24a formed on the valve stem 24 and between the spring receiving portion 22b, and the valve stem 24 is directed forward by the valve spring 25. The urging force to push out is given.

On the other hand, the valve seat 23 attached to the opening of the liquid bottle 3 is in contact with the valve stem 24 urged by the valve spring 25 at the rear end thereof to maintain airtightness and prevent liquid leakage. Further, the valve seat 23 receives the valve stem 24 and functions as a stopper for preventing the valve stem 24 from moving forward by the valve spring 25. The valve seat 23 is provided with an annular packing 26 arranged between the bottle stopper 21 and the shaft. It also has a function of receiving the packing 26 in a fixed position.
The annular packing 26 is in contact with the outer peripheral surface of the liquid introduction pipe 6 and acts to prevent leakage of the coating liquid from the liquid bottle 3.

The liquid bottle 3 described above is configured to be detachable from the shaft cylinder 2.
That is, when the liquid bottle 3 is removed from the shaft cylinder 2 and when it is attached to the shaft cylinder 2 as shown in FIG. 2, the valve rod 24 is advanced by the valve spring 25. Accordingly, the rear end portion of the valve seat 23 and the valve rod 24 biased by the valve spring 25 come into contact with each other to keep the airtightness, thereby preventing leakage of the coating liquid filled in the liquid bottle 3.

On the other hand, when the rear end portion (bottom portion) of the liquid bottle 3 is knocked in the state shown in FIG. 2 and the liquid bottle 3 is advanced in the shaft cylinder 2, the valve stem 24 is moved as shown in FIG. Pushed by the liquid introduction pipe 6, the valve stem 24 moves backward relatively in the liquid bottle 3.
As a result, the seal piece 24 a of the valve stem 24 is retracted to the position of the slit 22 a of the spring receiver 22. Therefore, the coating liquid filled in the liquid bottle 3 enters the rear end opening of the liquid introduction pipe 6 through the slit 22 a of the spring receiver 22.

When the pressing force of the knocking operation of the liquid bottle 3 is released, the valve rod 24 moves relatively forward, and the liquid is pushed when the seal piece 24a crosses the slit 22a and reaches the inner peripheral surface of the spring receiver 22. First, the liquid is supplied to a brush 8 as an application unit via a liquid guide pipe 7. Due to the expanding action of the valve spring 25, the liquid bottle 3 is retracted in the shaft cylinder 2 and comes into contact with the rear end of the valve seat 23 and the valve rod 24 urged by the valve spring 25, and stops. Return to the state shown in.
That is, in this embodiment, the spring receiver 22, the valve rod 24, and the valve spring 25 open the valve by moving the liquid bottle in the axial direction, and supply the coating liquid to the brush 8 serving as the coating unit. The valve set 27 is configured.
Therefore, each time the liquid bottle 3 attached to the shaft cylinder 2 is knocked, the valve set 27 is opened, and the application liquid filled in the liquid bottle 3 is supplied to the application unit 8 using a brush. Acts as follows.

  According to the liquid applicator 1 described above, the cap 5 that covers the brush 8 as the applicator is formed with the opening 5b that communicates the inside and the outside of the cap. The water remaining after, for example, washing 8 with water can be effectively evaporated to the outside through the opening 5 b formed in the cap 5.

  In addition, a vent hole 4g is formed in the tip shaft 4 that supports the application portion 8 in the axial direction, and a space portion 11 formed between the inner peripheral surface 4f of the tip shaft 4 and the application portion 8 is formed in the vent hole. By using the configuration communicated with the liquid applicator 1, it is possible to contribute to further promoting the evaporation and drying of water after washing with water remaining in the application unit 8 after the liquid applicator 1 is used.

According to the configuration of the liquid applicator 1 described above, when the liquid applicator 1 is stored with the cap 5 down, the opening 5b formed in the top surface 5a of the cap 5 is formed by the flat portion of the storage location. In this case, there may be a case where evaporation and drying of moisture remaining in the application unit 8 is hindered.
Therefore, the configurations of the second to fourth caps shown in FIGS. 7 to 9 can solve such problems, and the configuration of each cap 5 will be described below.
In addition, the internal structure of the cap 5 shown in FIGS. 7-9 is the same as that of the 1st example shown by sectional drawing shown in FIG.

In the cap 5 shown in FIG. 7 and FIG. 8, the opening 5b that communicates the inside and outside of the cap is formed at the center of the top surface 5a, and the periphery of the opening 5b is discontinuous along the opening 5b. The convex portion 5 d is formed integrally with the cap 5.
That is, in the example shown in FIG. 7, the convex portions 5d having three small protrusions formed in a hemispherical shape so as to surround the circular hole-shaped opening 5b are arranged at equal intervals.
Therefore, according to the configuration of the cap 5 shown in FIG. 7, even if the liquid applicator 1 is stored with the top surface 5a of the cap 5 down, the opening 5b is blocked by the presence of the convex portion 5d integral with the cap 5. Can be prevented.

In addition, the example shown in FIG. 8 is formed so as to surround a round hole-shaped opening 5 b and a pair of convex portions 5 d formed in an arc shape are opposed to each other.
Therefore, according to the example shown in FIG. 8, a pair of recesses 5e are formed at positions relatively opposed to each other by 180 degrees at the cuts of the arc-shaped protrusions 5d. Therefore, the pair of recesses 5e functions to prevent the opening 5b from being blocked even when the top surface 5a of the cap 5 is placed downward.

The top surface 5a of the cap 5 shown in FIG. 9 is formed in a bowl shape, and an opening 5b for communicating the inside and outside of the cap 5 is formed at the center of the top surface 5a formed in a bowl shape.
And the structure by which the groove part 5f which goes to the circumferential direction from the said opening 5b was formed in the said top surface 5a continuously is used for the said opening 5b formed in the top surface 5a of the said cap.
That is, in the example shown in FIG. 9, three groove portions 5f extending in the circumferential direction from the opening 5b are radially formed on the top surface 5a continuously to the round hole-shaped opening 5b formed at the center of the top surface 5a. Is formed. Accordingly, the groove 5f functions to prevent the opening 5b from being blocked even when the top surface 5a of the cap 5 is on the lower side.

In the above-described embodiment, the opening 5b for communicating the inside and outside of the cap 5 is shown as being formed on the top surface 5a of the cap 5, but this is formed in any part of the cap 5. In addition, a plurality of openings 5b may be provided.
In the above-described embodiment, the cap 5 that protects the brush 8 as the application portion is detachably attached to the proximal end portion of the front shaft 4, but this is attached to the front end portion of the shaft tube 2. It may be configured to be attached.

  Furthermore, in the above-described embodiment, a brush in which a large number of fibers are bundled is used as the application portion 8, but the same effect can be obtained by using felt, sponge, natural rubber, or elastomer instead of this brush. An effect can be obtained.

DESCRIPTION OF SYMBOLS 1 Liquid applicator 2 Shaft cylinder 3 Liquid bottle 4 Lead shaft 4a Shaft hole 4e Brush support hole 4f Inner peripheral surface 4g Ventilation hole 5 Cap 5a Top surface 5b Opening 5d Convex part 5e Concave part 5f Groove part 6 Liquid introduction pipe 8 Application part (Brush )
9 Brush holder 11 Space part 21 Bottle stopper 22 Spring holder (valve set)
22a Slit 22b Spring receiving portion 23 Valve seat 24 Valve rod (valve set)
24a Seal piece 25 Valve spring (valve set)
26 Packing 27 Valve set

Claims (7)

An application portion supported by a tip shaft disposed at a front end portion of the shaft tube; a liquid bottle that is movably mounted in the axial direction in the shaft tube and filled with a coating solution; and the liquid bottle and the A liquid applicator provided with a valve set that is arranged between the applicator and opens by the movement of the liquid bottle in the axial direction and supplies the applicator liquid filled in the liquid bottle to the applicator. There,
An opening that connects the inside and outside of the cap is formed in the cap that is detachably attached to the front end portion of the tip shaft or the barrel so as to cover the application portion, and a tip that supports the application portion A liquid applicator characterized in that a vent hole is formed in the shaft.   The liquid applicator according to claim 1, wherein the opening that communicates the inside and outside of the cap is formed on the top surface of the front end portion in the axial direction of the cap.   3. The liquid application according to claim 2, wherein a discontinuous convex portion is formed integrally with the cap around the opening formed on the top surface of the cap. Ingredients.   The liquid applicator according to claim 2, wherein a groove portion extending in the circumferential direction from the opening is formed in the top surface continuously to the opening formed in the top surface of the cap.   2. The liquid applicator according to claim 1, wherein the vent hole formed in the front shaft communicates with a space portion formed between an inner peripheral surface of the front shaft and the application portion. .   A plurality of vent holes formed in the front shaft are formed around the application portion with the application portion in the center, and each of the plurality of vent holes includes the inner peripheral surface of the front shaft and the application portion. The liquid applicator according to claim 5, wherein the liquid applicator communicates with a space formed therebetween.   The liquid applicator according to claim 1, wherein the applicator supported by the front shaft is formed in a brush shape by bundling a large number of fibers.

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