JP6549473B2 - Applicator - Google Patents

Description

  The present invention relates to an applicator for applying a coating liquid such as ink or cosmetic liquid, such as a writing instrument or a cosmetic tool.

  As well known, various kinds of applicators are conventionally used as an applicator such as a writing instrument such as a brush pen or a cosmetic tool, and an application liquid such as an ink or a cosmetic liquid to an application medium such as a paper surface or a skin surface.

  In particular, there has been an increasing demand for thin coating, and a coating tool is disclosed that attempts to apply the coating liquid in a good state by reliably guiding the coating liquid to the tip while the coating portion has a small diameter. ing.

  For example, Patent Document 1 discloses an applicator which inserts a core into a writing unit to guide a liquid, and in order to prevent the coating liquid leakage of the applicator, the collector is provided with a tip shaft and a shaft. Covering.

  Moreover, although the structure which provided the liquid supply part with a groove | channel in the outer periphery of a fine brush in patent document 2 is disclosed, although a liquid supply part fixes by pressing-in to a filling, it is concrete in the case of a collector type. Fixing means are not disclosed.

JP, 2015-2984, A JP 2012-101395 A

  SUMMARY OF THE INVENTION In view of such circumstances, the present invention provides an applicator capable of reliably supplying liquid from a relay core when a liquid guiding portion is provided around the coating core.

The present invention relates to an applicator which is provided with an application portion formed on a flange whose rear end portion is enlarged in diameter in the front shaft, and which guides liquid to the application portion by a relay core,
In the front shaft, a tubular liquid derivative is disposed around the coating portion, the liquid derivative is in contact with the outer periphery of the coating portion, and a relay core is attached from the rear of the liquid derivative,
The inside diameter of the liquid derivative is equal to or greater than the outside diameter of the flange,
The outer diameter of the relay core tip is equal to or less than the outer diameter of the flange,
An interference portion is provided on the outer surface of the rear of the liquid derivative or the inner surface of the rear of the front shaft,
When the liquid derivative is mounted in the front shaft, the inner periphery of the rear portion of the liquid derivative is reduced in diameter by the pressure by the interference portion (projection or the like), and the inner surface of the rear portion of the reduced liquid derivative is the relay core The applicator according to the present invention is in contact with the outer periphery of the applicator.

  In the present invention, when the liquid derivative is mounted in the front shaft, it is preferable that a gap be provided between the outer periphery of the liquid derivative and the inner circumference of the front shaft.

In the present invention, in the front opening of the front shaft, the coating portion is exposed and the liquid derivative is not exposed,
It is preferable that the inner diameter of the front opening portion of the front shaft be equal to or larger than the inner diameter of the front portion of the liquid derivative.

  In the present invention, it is preferable that a corner on the tip side of the liquid derivative is formed in an R shape having a chamfer.

  In the present invention, the liquid derivative is preferably a sintered body for inducing a liquid.

  According to the applicator of the present invention, the diameter of the rear inner diameter of the liquid derivative is reduced by the interference portion (protrusion etc.) between the rear of the liquid derivative and the front shaft, so that the liquid derivative and the relay core come in contact with each other. Thus, even a thin relay core can be easily assembled to provide a stable application portion attachment structure, and the excellent effect of reliably supplying the liquid from the relay core to the liquid derivative and the application portion is achieved. It can play.

  In the present invention, when the liquid derivative is mounted in the front shaft, the liquid derivative is not compressed more than necessary by providing a space between the outer periphery of the liquid derivative and the inner circumference of the front shaft. Since the deformation of the liquid derivative can be made appropriate, the influence on the porosity can be reduced in the case of a sintered core provided with a large number of pores in the liquid derivative.

  In the present invention, the coating portion is exposed and the liquid derivative is not exposed in the front opening portion of the front shaft, and the inner diameter of the front shaft front opening portion is with respect to the inner diameter of the front portion of the liquid derivative. If the liquid derivative is formed equal to or more than the above, the liquid derivative is not exposed, so that the liquid derivative can be prevented from being unexpectedly applied at the time of use. In addition, since the inner diameter of the front shaft tip portion is (slightly) large, the movement of the coating portion during use is not limited, and the contact between the coating portion and the liquid derivative is not prevented.

It is explanatory drawing of the state which equipped the cap of the collector type applicator which concerns on 1st Embodiment of this invention, Comprising: (a) is a whole side view, (b) is a whole longitudinal cutting along the B-B line of (a) FIG. 6C is a partially enlarged vertical sectional view from the writing part to the front of the collector. It is explanatory drawing of the state which removed the cap of the collector type applicator which concerns on said 1st Embodiment, Comprising: (a) is a whole side view, (b) is a whole longitudinal cross section which follows the BB line of (a) , (C) is a partially enlarged longitudinal sectional view from the writing part to the front of the collector. It is a component drawing of the tip axis | shaft of the collector type applicator which concerns on the said 1st Embodiment, Comprising: (a) is a perspective view from the front, (b) is the B section enlarged view of (e), (c) is a perspective view (D) is a side view, (e) is a cross-sectional view taken along the line E-E of (d), and (f) is a view from the rear. It is a component figure of the relay core of the collector-type applicator which concerns on said 1st Embodiment, Comprising: (a) is a perspective view, (b) is a side view, (c) is a cross section which follows the C-C line of (b) FIG. It is a component figure of the liquid derivative of the collector-type applicator which concerns on said 1st Embodiment, Comprising: (a) is a perspective view from the front, (b) is a perspective view from the front, (c) is a side view, (d) Is a sectional view taken along the line D-D of (c), (e) is a perspective view from the rear, and (f) is a view from the rear. It is explanatory drawing of tip part vicinity about the collector type applicator which concerns on the said 1st Embodiment, Comprising: (a) is what assembled the application part and the liquid derivative, (b) is assembly explanatory drawing of a tip part. It is a component figure of the liquid derivative of the collector-type applicator which concerns on 2nd Embodiment of this invention, Comprising: (a) is a perspective view from the front, (b) is a perspective view from the front, (c) is a side view, (D) is a cross-sectional view taken along the line D-D of (c), (e) is a perspective view from the rear, and (f) is a view from the rear.

  Hereinafter, embodiments of the present invention will be described with reference to the attached drawings.

  1 to 2 are explanatory views of a collector-type applicator according to a first embodiment of the present invention, and FIG. 1 shows a state in which a cap is mounted and FIG. 2 shows a state in which the cap is removed. 3 is a front shaft, FIG. 4 is a relay core, FIG. 5 is a component drawing of a liquid derivative (for example, a sintered body), and FIG. 6 is an explanatory view of the vicinity of the tip portion of the applicator. FIG. 7 is a component diagram of a liquid derivative (for example, a sintered body) according to a second embodiment.

  In the applicator according to the first embodiment, as shown in FIGS. 1 and 2, the application unit 10 formed on the flange 10a whose rear end is enlarged is provided in the front shaft 12 and the liquid is It is an applicator that guides the application unit 10.

  The front shaft 12 is fitted and fixed to the end of a shaft 16 (the inside of which constitutes the liquid storage portion 16a). A collector 18 is mounted in the front shaft 12 and the shaft 16.

[Collector 18]
A hollow hole 18a extending in the axial direction from the front end to the rear end is formed through the inside of the collector 18, and the relay core 14 is densely mounted in the hollow hole 18a. In addition, a plurality of sheet members 18b are arranged at intervals outside the collector 18, and the function of the collector 18 for retaining liquid between the sheet members 18b is exhibited. As shown in FIG. 6, slits 18c are formed in the sheet 18b in the longitudinal direction (axial direction).

  The liquid is temporarily held in the collector 18 by the capillary force between the individual sheets 18b through the slits 18c and can flow in and out. The collector 18 is attached to the inside from the front shaft 12 to the shaft 16, and the inside of the shaft 16 from the rear of the collector 18 becomes a liquid storage portion 16 a.

  The tip end of the collector 18 has a cup shape, and the tip end of the cup abuts against the step 12 d formed inside the tip shaft 12 and is positioned, and the tip shaft 12 is located inside the point where the tip tip abuts. The rear end of the inner liquid derivative 20 is pressed. Further, the front end of the relay core 14 in the collector 18 is in contact with the rear end of the application unit 10.

[Shaft 16]
The shaft 16 is partitioned by a partition 16b and has a forward end in the liquid storage portion 16a beyond the partition, a cylindrical opening at the rear of the partition 16b, and an opening thereof closed by a tail plug 16c. In the liquid storage portion 16a, a stirring ball 16d for stirring the liquid (coating liquid) is housed.

[Point shaft 12]
As shown in FIG. 3, the front shaft 12 is a hollow tubular resin product having a generally tubular shape in which the front part is tapered in a tapered shape and the rear part is in a pipe shape.
Further, there is a front side portion and a rear side portion of the front shaft 12, and a flange portion 12a is formed to project in a radial direction on an outer peripheral surface of the rear side portion.
Further, the inside of the front portion becomes smaller in diameter in a step shape (the stepped portion 12d is formed), and an air hole 12b is opened along the axial direction at a rear location adjacent to the portion with the reduced diameter. A plurality of places are formed circumferentially in the state.
The inner surface of the front portion tapers to a tapered shape, and the diameter is reduced stepwise to form an opening 12c at the tip. In the front shaft 12, the inner diameter of the opening 12c is formed to a smaller diameter through the front and rear portions.

  Further, a portion adjacent to the air hole 12b inside the front end of the front shaft 12 is slightly reduced in diameter in a step shape, further drawn in an arc to be reduced in diameter, and connected to the step portion 12d. Further, an annular projection, which is an interference portion 22 described later, is protruded inward at an adjacent front portion of the stepped portion 12d. The inner surface of the front shaft 12 ahead of the protrusion of the interference portion 22 is gradually tapered in diameter.

As shown in FIG. 3, the rear end of the front shaft 12 is formed in a substantially cylindrical shape, and the flange portion 12a is formed on the outer periphery of the rear portion so as to be expanded. The rear portion of the front shaft 12 is inserted into and fixed to the tip of the shaft 16 (see FIGS. 1 and 2). When the front shaft 12 is attached to the shaft 16, the flange portion 12 a abuts on the tip of the shaft 16 so that the front shaft 12 does not go into the shaft 16.
A plurality of concavo-convex portions are formed on the outer periphery of the rear portion of the flange portion 12a of the front shaft 12 so as to prevent and fix when the shaft body 16 is fitted. Concavo-convex portions are also formed on the portions of the inner peripheral portion of the shaft 16 corresponding to the plurality of portions, and they are fitted to each other to maintain liquid tightness and to prevent them from coming off.

[Cap 24]
In the applicator, as shown in FIG. 1, the inner cap 24a is airtightly in contact with the rear slope of the air hole 12b of the front shaft 12 to cover the application section 10 to the front shaft 12 when not in use. . The main body of the cap 24 is fitted on the front shaft 12 and abuts on the flange portion 12a. In addition, the code | symbol 24b is a spring.
In addition, the front shaft 12, the shaft 16, the collector 18, the cap 24 and the like can be formed of a liquid-tight material, for example, various resin materials such as polyethylene and polypropylene.

[Applying unit 10]
The application unit 10 is a brush having a plurality of hair tips.

  The application section 10 is in the shape of a brush and is a fine brush having an outer diameter of 2.0 mm or less. The brush of the application part 10 may be either a natural fiber or an artificial fiber. In FIG. 1 to FIG. 2, the application part 10 is a bundle of resin fibers, and the front end part has a tapered shape formed to be thinner toward the front end, and the rear end part is heat welded to the outer peripheral direction It is shaped like a projecting flange (flange 10a) and secured so that the fibers do not fall apart. At the rear end of the coating unit 10, the peripheral flanges 10 are clogged between fibers so that the coating liquid does not easily penetrate but the coating liquid is easily penetrated from between the fiber bundles in the central part. . The relay core 14 abuts on the central portion of the application unit 10, and the liquid in the liquid storage unit 16a is guided.

  In addition, the material of the application part 10 is not particularly limited, but it is preferable to use, for example, synthetic resin fibers made of polyester fibers such as polyamide fibers and PBT (polybutylene terephthalate).

[Liquid derivative 20]
A tubular liquid derivative 20 is disposed around the coating portion 10 in the front shaft 12 so that the liquid derivative 20 contacts the outer periphery of the coating portion 10, and the relay core 14 is attached to the liquid derivative 20 from the rear thereof. When mounted, the front end of the relay core 14 is in contact with the rear end of the application unit 10.

  In the embodiment, the liquid derivative 20 is made of a sintered core, but may be another porous material as long as the liquid can flow out. Further, as shown in FIG. 5, in the inner peripheral portion of the liquid derivative 20, the diameter of the rear portion 20a is larger than that of the front portion, and the outer peripheral portion is tapered in a tapered shape. A stepped portion 20a1 is formed in the rear portion 20a, and the flange 10a of the application portion 10 abuts on the stepped portion 20a1 to prevent the application portion 10 from coming off from the liquid derivative 20 as shown in FIG. .

[Relay core 14]
As shown in FIG. 4, the relay core 14 is formed with a recess (14a) on the peripheral surface of the tip end portion, and the inner peripheral projection of the collector 18 is engaged when fitted into the collector 18 in FIGS. It is a structure that is locked. The relay core 14 is made of a fiber bundle made of a resin material or the like, a molding core, or the like, and has a structure capable of inducing a liquid by exerting a capillary force.

Cosmetics
The applicator according to the first embodiment is a liquid cosmetic applicator using an appropriate one such as a brush brush or a pen core as the applicator 10, and at least the liquid cosmetic contained in the liquid container 16a is , Carbon black, water, 0.5 to 5% by mass of a dispersing agent comprising a film forming resin, 2 to 15% by mass of a film forming agent (in terms of solid content), and 0.5% by weight or less of a surfactant And the viscosity at a shear rate of 3.83S.sup.- ¹ as measured by an ELD viscometer can be in the range of 2 to 8 mPa.s.

  The carbon black used in the cosmetic is used as a coloring material, and is not particularly limited as long as it is a carbon black generally used as a coloring material for black liquid cosmetics, and various carbon blacks may be used. it can.

  The content of the carbon black is preferably 1 to 20% by mass, and more preferably 5 to 15% by mass, with respect to the total amount of the liquid cosmetic. When the content of this carbon black is less than 1% by mass, coloring is thin and it becomes insufficient as a cosmetic. On the other hand, when it exceeds 20% by mass, the viscosity becomes too high, and liquid cosmetics such as collector type and batting type In the applicator, the liquid can not be discharged smoothly, which is not preferable.

  The dispersant used for the cosmetic comprises a film-forming resin, improves the dispersibility of the carbon black as a coloring material, and also functions as a resin for film formation.

  Moreover, as a dispersing agent which can be used for the said cosmetics, if it has the said function, it will not be specifically limited, For example, acrylic acid, methacrylic acid or these alkyl esters or derivatives, vinyl acetate, vinyl pyrrolidone Copolymers selected from one or two or more of them, and betaine type alkyl acid type amphoteric resins, etc. are preferably mentioned. From the viewpoint of the further dispersion performance of carbon black, acrylic acid and methacryl are preferable. And copolymers of vinyl acetate and one selected from acids or their alkyl esters or derivatives, copolymers of vinyl pyrrolidone and vinyl acetate, acrylic acid, methacrylic acid or one or more of their alkyl esters and octyl Copolymers with acrylamide are desirable, particularly preferably, further dispersion performance, film type In terms of capacity, a copolymer of acrylic acid, methacrylic acid or one or more and octylacrylamide their alkyl esters.

  The content of these dispersants is preferably 0.5 to 5% by mass, more preferably 2 to 4% by mass, with respect to the total amount of the liquid cosmetic.

  If the content of the dispersant is less than 0.5% by mass, the dispersion stability of the carbon black as a coloring material becomes insufficient, while if it is contained in excess of 5% by mass, the viscosity becomes too high and the dispersion stability Improvement is not seen and it is not economical.

  The film-forming agent used for the cosmetic includes, for example, a copolymer selected from one or more monomers of acrylic acid, methacrylic acid or their alkyl esters or derivatives, styrene, and vinyl acetate. Emulsion resins are mentioned.

  In the cosmetic, the dispersant is also composed of a film-forming resin, and the difference between the dispersant and the dispersant is a soluble resin and an emulsion resin, and the emulsion resin uses a monomer as a polymerization solvent. It is a water suspension obtained by emulsion polymerization in water. In the dispersion of carbon black in the cosmetic, a dispersion of carbon black in which the soluble resin is more stable than the emulsion resin is obtained. It separates and uses it in this respect.

  The content of the film-forming agent (emulsion resin) is preferably 2 to 15 mass, more preferably 2 to 10 mass%, in terms of solid content (resin content) based on the total amount of the liquid cosmetic. .

  If the content of these film-forming agents (emulsion resin) is less than 2% by mass in terms of solid content (resin content), the water resistance performance is poor, while the content exceeds 15% by mass in terms of solid content (resin content) As a result, there is a possibility that the application part of the liquid cosmetic applicator (such as brushheads and pen core) becomes dry and can not be applied, which is not preferable.

  Although surfactants may be used to stabilize these film-forming agents (emulsion resins), the effects of the surfactants of the present invention on adhesion are small. The content shall not be taken into consideration.

  The surfactant used for the liquid cosmetic functions to function as a dispersion aid with respect to the dispersion of carbon black, and examples thereof include nonionic surfactants, anionic surfactants, cationic surfactants, and lecithin. Other than propylene glycol fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene alkyl ether phosphoric acid / phosphate, polyethylene glycol fatty acid ester, alkyl sulfuric acid One or more mixtures of salts, sulfonates, polyoxyethylene alkyl ether sulfates and the like can be mentioned.

  The content of these surfactants is preferably 0.5% by mass or less, more preferably 0 to 0.3% by mass, with respect to the total amount of the liquid cosmetic.

  If the content of the surfactant is more than 0.5% by weight, the water resistance is poor and a sufficient fixing power can not be obtained, which is not preferable.

  The liquid cosmetic composition uses water (including purified water, distilled water, ion-exchanged water, pure water, ultrapure water, etc.) as a solvent. The water content is the balance containing the above-described components and optional components described later.

  Furthermore, in addition to the above-mentioned essential components and the like, the liquid cosmetic may contain optional components and the like used for ordinary liquid cosmetic. Specifically, the preservative, antioxidant, neutralizer, ultraviolet absorber, chelating agent, moisturizing agent, cosmetic component, fragrance, viscosity modifier, etc. are contained in an appropriate amount as long as the effect of the cosmetic is not impaired. It can be done.

The liquid cosmetic has a viscosity of 2 to 8 mPa · s at a shear rate of 3.83 S ⁻¹ by an ELD viscometer at a temperature of 25 ° C., particularly preferably 3 mPa · s to 6 mPa · s. It is desirable to

When the viscosity value is less than 2 mPa · s, the liquid flows to wrinkles and causes bleeding, while when it exceeds 8 mPa · s, the viscosity is high, so liquid makeup using brush head or pen core as the application means of the present invention In the liquid cosmetic incorporated in the agent applicator, the liquid can not be discharged smoothly, which is not preferable. Specifically, viscosity measurement conditions (including examples to be described later) are measured at a temperature of 25 ° C. and a shear speed of 3.83 (S ⁻¹ ) in an ELD viscometer standard cone rotor manufactured by Tokimec Co., Ltd. Means the value you

The applicator according to the first embodiment has the following structure in terms of assembly.
FIG. 6 is an explanatory view of the tip of the applicator.

  As shown in FIG. 6, the inner diameter of the enlarged rear portion 20a of the liquid derivative 20 is set equal to or larger than the outer diameter of the flange 10a.

  Further, in the non-mounted state, the relay core 14 is set such that the outer diameter of the tip of the relay core 14 is equal to or less than the outer diameter of the flange 10 a.

  In order to fit the outer surface of the rear portion 20 a of the liquid derivative 20 to the inner surface of the front shaft 12, an interference portion (a projection or the like) 22 composed of a projection is provided on the inner surface of the rear portion of the front shaft 12. The interference portion 22 may be formed on the liquid derivative 20 itself by expanding the diameter of the rear portion of the liquid derivative 20 in the outer diameter direction or providing a protrusion in addition to the tip shaft 12.

  That is, when the liquid derivative 20 is assembled to the front shaft 12, as shown in FIG. 6, the liquid derivative 20 is pressed and mounted in the front shaft 12. On the inner circumference of the rear portion of the liquid derivative 20, the diameter is reduced in the direction of the symbol "F" in the figure by the pressing by the interference portion (projection etc.) 22 and the inner surface of the rear portion of the liquid derivative 20 reduced in diameter is the relay core It is made to contact the outer periphery of 14.

  According to the applicator of the first embodiment, the inner diameter of the rear portion 20a of the liquid derivative 20 is reduced by the interference portion 22 between the rear portion 20a of the liquid derivative 20 and the front shaft 12, thereby the liquid derivative 20 and the relay core 14 was in contact. The collector 18 and the relay core 14 can be fixed by inserting the collector 18 and the relay core 14 into the front shaft 12 from the rear in a state where the coating portion 10 is charged to the liquid derivative 20.

Therefore, even the thin relay core 14 is easy to be charged since the liquid derivative 20 does not have a diameter reduction at the start of charging, and the liquid derivative 20 is pressed by the front end of the collector 18 or the like, so that The diameter can be reduced and fixed.
Therefore, according to the above-mentioned applicator, it is possible to set it as the attachment structure of the application part 10 assembled easily and stably, and while being able to supply a liquid directly from the said relay core 14 to the application part 10, the liquid derivative 20 is As a result, the excellent effect of reliably supplying the liquid to the coating unit 10 can be achieved.

  Further, in the applicator according to the first embodiment, the coating portion 10 protrudes and is exposed in the forward opening (opening) 12 c of the front shaft 12, and the liquid derivative 20 enters and is covered and exposed in the front shaft 12. The inner diameter of the front opening 12 c of the front shaft 12 is equal to or larger than the inner diameter of the front of the liquid derivative 20.

  Therefore, since the liquid derivative 20 is not exposed, it can be prevented that the liquid derivative 20 is unexpectedly applied at the time of use. In addition, since the inner diameter of the front shaft front opening 12c is (slightly) wide, the movement of the coating unit 10 is not limited at the time of use, and the contact between the coating unit 10 and the liquid derivative 20 is not prevented.

In the applicator shown in FIG. 6, the flange 10a at the rear end of the coating unit 10 which is reduced in diameter and inserted behind the stepped portion 20a1 inside the rear portion 20a of the liquid derivative 20 can be prevented from coming off.
In addition, a concave portion with a slight arc is formed on the outer peripheral surface of the tip of the liquid derivative 20 to the outer peripheral surface of the central portion or on the inner peripheral surface of the front shaft 12 to form a void 26 between the inner surface and the front shaft. It is also good.

An applicator according to a second embodiment will be described.
In this applicator, as shown in FIG. 7, the liquid derivative 20 is a concave portion 20b in which the outer peripheral portion from the tip to the central portion is gently recessed in a thread-like manner. The configuration other than the liquid derivative 20 is the same as that of the first embodiment.

  In the application portion, when the liquid derivative 20 is mounted in the front shaft 12, the outer peripheral surface of the liquid derivative 20 and the inner peripheral surface of the front shaft 12 (the liquid derivative 20 in FIG. The space 26 is formed between the outer surface and the outer surface of the two-dotted line (shown in phantom).

  Therefore, when the liquid derivative 20 is mounted in the front shaft 12, the air gap 26 can be provided between the outer periphery of the liquid derivative 20 and the inner periphery of the front shaft 12. Since the liquid derivative 20 can be appropriately deformed without being compressed more than necessary, when the liquid derivative 20 is provided with a large number of pores, the influence on the porosity can be reduced in the case of a sintered core.

  Further, in the second embodiment, since the corner 20 c on the tip end side of the liquid derivative 20 is formed in an R shape having a chamfer, the thickness of the front shaft 12 can be increased at the chamfered portion, Even if the front shaft 12 is made thin, the strength of the front shaft 12 can be secured. The chamfering may be arc-shaped in cross section or angular.

  Further, the rear from the step 20a1 in the inside of the rear portion 20a is straight, and the flange 10a at the rear end smoothly inserts when the application portion 10 is inserted, and the diameter is reduced by the interference portion 22 of the front shaft 12 It is supposed to stop.

  The present invention is not limited to the above embodiment, but may be modified within the scope of the present invention. For example, although the liquid derivative is preferably a porous sintered body, it may be a liquid derivative of a resin molded body in which the liquid guide groove is provided along the axial direction on the inner or outer periphery.

  The applicator of the present invention can be used for a collector-type applicator of a cosmetic container such as an eyeliner or an eyebrow having a brush tip or pen core as an application portion.

10 Application part 10a Flange 12 Front shaft 12a Flange part 12b Air hole 12c Opening on the front side (opening)
12d Step 14 Relay core 16 Shaft 16a Liquid storage 16b Partition 16c Tail plug 16d Stirring ball 18 Collector 18a Hollow hole 18b Sheet 20 Liquid derivative 20a Rear part 20a1 Step 20b Concave portion 20c Corner 22 Interference 24 Cap 24a Inner cap 26 gap

Claims (5)

In the applicator which provides the application part formed in the flange which the rear end part expanded in diameter in a tip axis, and guides liquid to an application part by a relay core,
In the front shaft, a tubular liquid derivative is disposed around the coating portion, the liquid derivative is in contact with the outer periphery of the coating portion, and a relay core is attached from the rear of the liquid derivative,
The inside diameter of the liquid derivative is equal to or greater than the outside diameter of the flange,
The relay core tip outer diameter is equal to or less than the outer diameter of the flange,
An interference portion is provided on the outer surface of the rear of the liquid derivative or the inner surface of the rear of the front shaft,
When the liquid derivative is mounted in the front shaft, the inner periphery of the rear portion of the liquid derivative is reduced in diameter by the pressure by the interference portion, and the inner surface of the rear portion of the reduced liquid derivative contacts the outer periphery of the relay core An application tool characterized in that   The applicator according to claim 1, wherein when the liquid derivative is mounted in the front shaft, a gap is provided between the outer periphery of the liquid derivative and the inner circumference of the front shaft. The front opening portion of the front shaft has a configuration in which the coating portion is exposed and the liquid derivative is not exposed,
The applicator according to claim 1 or 2, wherein an inner diameter of the front opening of the front shaft is equal to or larger than an inner diameter of the front of the liquid derivative.   4. The applicator according to claim 3, wherein a corner on the tip side of the liquid derivative is formed in an R shape having a chamfer.   The applicator according to any one of claims 1 to 4, wherein the liquid derivative is a sintered body.

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