JP2007236960A - Liquid applicator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid applicator which achieves a higher applicability without unevenness in application by making an application body maintain a proper hardness and bending elasticity. <P>SOLUTION: The liquid applicator 1 is provided with an application body 10 at the tip of an outer shaft 46 and has a liquid pressurization mechanism 6. The application body 10 with its tip made semi-circular in the plan view of an applying surface is made of a flat tapered elastic material having the applying surface almost flat. A communication path 24 is formed passing through the tip part of the application body 10 and a circular or semi-circular delivery port 24a opened vertically to the applying surface almost flat is disposed at the center part of the applying surface almost flat. The distance L to the tip of the application body from the delivery port is within a dimension range of 1 (mm)≤L≤20 (mm) and the width W of the application body at its center part is within a dimension range of 2 (mm)≤W≤20 (mm) while the application body has the vertical resilience of 0.01 (N)-1.40 (N) at a part 3 (mm) from its tip. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a liquid applicator comprising a liquid pressing means for pressurizing a coating liquid inside a main body, and supplying the coating liquid to an application body at the tip of the main body by pressing of the liquid pressing means, and in particular, the skin The present invention relates to a liquid applicator for applying a coating liquid to a soft coated body such as a mouth or the oral cavity.

Conventionally, a liquid applicator for applying a coating liquid such as cosmetics or chemicals contains the coating liquid in the main body and supplies the coating liquid to the application body provided at the tip in a timely manner. In order to pressurize the coating liquid in the liquid storage chamber provided, there is a hydraulic pressurizing mechanism having a piston and its feeding mechanism or a liquid pressing means (Japanese Patent No. 3081834: Patent Document 1, practical use). (See Japanese Patent No. 2603088: Patent Document 2).
Further, an application body of a cosmetic applicator has been disclosed in which an application lever is provided so as to protrude forward from a discharge port (discharge port) for the application liquid (Japanese Utility Model Publication No. 61-67621). 3) It is supposed that a cosmetic coating solution is supplied from a discharge port to the application lip, and the coating solution is spread while elastically deforming the application lip.
In addition, regarding an applicator for liquid cosmetics, an applicator body made of a flexible silicone resin has been proposed in which a contact surface is provided obliquely on the outer end surface of the applicator (utility model registration No. 3109917). Patent Document 4). In this applicator, the discharge port of the applicator body is deformed by the pressure of the cosmetic that is sent out under pressure, and the cosmetic liquid is discharged, and the touch feeling when applied by the flexible applicator main body is comfortable. It is said that it can spread evenly.
Japanese Patent No. 3081834 Utility Model Registration No. 2603088 Japanese Utility Model Publication No. 61-67621 Utility Model Registration No. 3109917

  However, in the conventional liquid applicator, when the user (user) applies the application liquid to the target portion, if the application body is hard and bends too much, the applied application liquid is scraped off. If there is a problem that the desired coating thickness cannot be obtained, such as uneven coating, etc., conversely, if the application body is soft and bends and the elastic force is insufficient, the tip of the application body is pressed and slid to the intended location. It is difficult to proceed, and there is a problem that the usability is deteriorated such that the coating liquid cannot be applied at the intended thickness (coating thickness).

  On the other hand, conventionally, an application body with good usability and little coating unevenness has not been proposed.

  Moreover, even when the coating liquid to be applied has a wide viscosity range, a coated body having good coating properties without coating unevenness is desired, but no conventional proposal has been made.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a liquid applicator having an appropriate hardness and bending elastic force of an application body and good application properties without uneven coating.

The present invention includes an outer shaft whose front and rear ends are open, an application body provided at the distal end of the outer shaft, a front shaft which is fitted into the outer periphery of the front end opening of the outer shaft, the application body projecting forward and inserted. A coating liquid stored in an internal coating liquid storage space, an inner shaft that is movable in the axial direction of the outer shaft and whose rear end projects from the rear end opening of the outer shaft, and a cap that covers at least the coating body With
A liquid introduction pipe that is press-fitted into the outer shaft front end portion in a watertight state and is slidably fitted with the inner shaft in a watertight state, and is press-fitted into the inner periphery of the male screw portion at the front end of the inner shaft. And a spring receiver having a window on the peripheral wall, a valve rod provided with a piston blade slidingly contacted with the inner periphery of the spring receiver in a watertight state, a valve spring for urging the valve rod forward in the spring receiver, In a liquid applicator provided with a liquid pressurizing mechanism having a valve opening press-fitted into an inner periphery of a spring receiver and a front end portion of the valve spring detachably contacted,
The application body is formed of a flat tapered elastic material having a semi-circular tip at the application surface vertical direction and having a substantially flat application surface, and is applied through the inside of the front shaft from the coating liquid storage space of the inner shaft. A communication path leading to the body tip is formed,
A circular or semi-circular discharge port that opens in a direction substantially perpendicular to the substantially planar application surface has a central portion of the approximately planar application surface,
The distance L from the discharge port to the tip of the application body is within the dimension range of 1 (mm) ≦ L ≦ 20 (mm),
The width W of the central part of the application body is in the dimension range of 2 (mm) ≦ W ≦ 20 (mm), and the application body has a vertical repulsive force of 0.01 (3) from its tip. It is a liquid applicator characterized by being (N) to 1.40 (N).

  According to the liquid applicator of the present invention, the application body is made of a flat and tapered elastic material having a semicircular tip at the application surface vertical direction and having a substantially flat application surface. A circular or semicircular discharge port that is formed in a substantially vertical direction with respect to the substantially planar application surface is formed in the center of the substantially planar application surface. The distance L from the discharge port to the tip of the application body is assumed to be within the dimension range of 1 (mm) ≦ L ≦ 20 (mm), and the application body is separated from the discharge port of the communication path. Further, the width W of the central part of the application body is within the dimension range of 2 (mm) ≦ W ≦ 20 (mm), and the application body is 3 ( mm), the vertical repulsive force is set to 0.01 to 1.40 (N). It exhibits an excellent effect that it can be less coating material of coating unevenness.

  In the present invention, if the vertical repulsive force of the coating portion of the coating body 3 (mm) from the tip is 0.01 to 0.70 (N), the usability is good and uneven coating is achieved. A small number of coated bodies can be obtained. In particular, when the coating solution has a viscosity range of 1,000 (mPa · s) to 100,000 (mPa · s), there is no coating unevenness and a coated body having good coating properties can be obtained.

  Further, in the present invention, the application portion of the application body has a distance L from the discharge port to the tip within the dimension range of 1 ≦ L ≦ 20 (mm), and the width W of the portion from the discharge port to the tip is When exceeding the condition which exists in the dimension range of 2 <= W <= 20 (mm), application | coating to a target surface is difficult, and if it is in this condition on the contrary, applicability | paintability will become favorable. It is desirable to select the width and length of the coated body appropriately within the above conditions.

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

  1-14 is explanatory drawing of each example of the form which implements the liquid applicator which concerns on this invention, Comprising: The part which attached | subjected the same code | symbol in the figure represents the same thing.

  FIG. 1 is an overall view of a liquid applicator according to Embodiment 1, and FIG. 2 is a detailed explanatory view of an application body.

  As shown in FIG. 1, the liquid applicator 1 according to the first embodiment includes a liquid pressurizing mechanism (liquid pressing means) 6 that pressurizes the coating liquid 4 inside the main body 2, and presses the liquid pressurizing mechanism 6. In the liquid applicator 1 in which the coating liquid 4 is supplied to the coating body 10 at the tip of the main body by the above, the coating body 10 is made of an elastic material, and a communication path 24 that communicates between the inside and the outside of the main body is formed. However, the application part 10a has a vertical repulsive force of 0.01 to 1.40 (3 mm) from the tip of the application part 10a. N).

  The application portion 10a of the application body 10 has a distance L from the discharge port 24a to the tip within a dimension range of 1 ≦ L ≦ 20 (mm), and a width W of the portion from the discharge port 24a to the tip is 2 ≦ It exists in the dimension range of W <= 20 (mm).

  The application body 10 is made of a transparent or translucent material so that the application liquid in the communication path 24 can be visually observed.

Further details will be described.
As shown in FIGS. 1 and 2, in the liquid applicator 1 according to the embodiment, the application liquid introduction path is closed and opened in the main body 2 that accommodates the application liquid 4 therein, and the application liquid is applied. A valve-type liquid pressurizing mechanism (also referred to as a valve device) 6 that pushes out toward the body 10 is incorporated.

  The main body 2 accommodates an outer shaft 46 that is open at both front and rear ends, a liquid introduction pipe 47 that is press-fitted into the front end portion of the outer shaft 46 in a watertight state, a coating liquid, and is movable in the axial direction within the outer shaft 46. An inner shaft 48 that is disposed and slidably fitted in the rear portion of the liquid introduction pipe 47 in a watertight state, and is incorporated in the front portion of the inner shaft 48 and is also connected to the inner end from the rear end opening 46a side of the outer shaft 46. When the shaft 48 is knocked in the axial direction, the valve is opened, and the liquid pressurizing mechanism (valve device) 6 that pushes the coating liquid in the inner shaft 48 to the liquid introduction tube 47 and the outside of the liquid introduction tube 47 are fitted. The front shaft 49 is fixed to the outer periphery of the front end opening 46b of the outer shaft 46 and fastens the liquid introduction tube 47 in the axial direction, and the front end portion of the application body 10 is exposed from the front shaft 49 to the communication path 24. A pipe 50 having a front end continuous and a rear end pressed into the front end of the liquid introduction pipe 47 in a watertight state. Configured Te are fixed by a flange-shaped section of the rear end portion of the coating member 10, screwing front barrel 49 to the front end of the outer shaft 46 by interposing a sealing ring 51.

  The inner shaft 48 has a bottomed cylindrical shape and includes a tank 48b in which a substantially cylindrical liquid storage space extending rearward from the rear end of the male screw portion 48a at the front end portion is formed. A predetermined coating liquid 4 and a stirring ball 52 for stirring the coating liquid 4 are accommodated in the tank 48b.

  The liquid pressurizing mechanism 6 is press-fitted into the inner periphery of the male threaded portion 48 a of the inner shaft 48 and has a spring receiver 53 having a window 53 a on the peripheral wall, and a rear portion slidably supported by the rear end portion of the spring receiver 53. In addition, a valve rod 54 provided with a piston blade 54a slidably contacting the inner periphery of the spring receiver 53 in the vicinity of the front end of the window 53a, and a valve spring for biasing the valve rod 54 forward in the spring receiver 53 55, and a valve seat 56 having a valve port 56a press-fitted into the inner periphery of the spring receiver 53 and detachably contacted with the front end portion of the valve spring 55.

  The spring receiver 53 and the valve seat 56 are fastened in the axial direction by an inner tip shaft 57 screwed into the male thread portion 48a of the inner shaft 48, and the inner tip shaft 57 and the valve seat 56 are between them. The outer periphery of the liquid introduction pipe 47 is fitted in an axially movable manner via a ring-shaped seal body 58 sandwiched between the two. In addition, when not in use, the cap 7 is fitted on the front shaft 3 to cover the application body 10.

  When the user knocks the rear end of the inner shaft 48 at the time of use, the liquid pressurizing mechanism 6 causes the application liquid 4 in the tank 48b to be applied to the application body 10 from the liquid introduction pipe 47 through the pipe 50. Can be sent out.

[Applied body 10]
The coated body 10 is formed of an elastic resin material such as rubber, elastomer, or closed cell body so as to obtain the necessary coating performance, and the members other than the coated body 10 have a density and rigidity that can provide necessary airtight performance and support performance. And is made of a resin material or a metal material.

  The application body 10 of the liquid applicator 1 is made of an elastic material. As shown in FIGS. 1 to 2, the application body 10 is formed with a communication path 24 communicating with the inside of the main body 2 and the outside, and the application liquid 4 is liquid pressurized. When pressurized by the mechanism 6, the coating liquid comes out from the liquid introduction pipe 47 through the pipe 50 and the communication path 24 to the coating portion 10a.

  The application body 10 has a flat tapered shape with both end (upper surface, lower surface) taper portions 21 and 22 at the tip portion that protrudes from the front end of the front shaft 3 and is exposed. A discharge port 24 a of the communication path 24 is opened in the upper tapered portion 21. The application portion 10 a of the application body 10 is provided so as to protrude further from the discharge port 24 a of the communication path 24 to the tip.

  In the present invention, the entire application body 10 may be an elastic body, or only the application part 10a may be formed of an elastic body. The application portion 10a is made of an elastic material, and an elastic material such as rubber or elastomer can be raised. Moreover, as long as the material of the application part 10a is liquid-tight, for example, if it is an elastic body which does not have continuous foaming, it can be used without any problem.

For example,
(1) Examples of the rubber include NBR, silicon rubber, EPDM, fluorosilicon rubber, fluorine rubber, urethane rubber, natural rubber, chlorobrene rubber, butadiene rubber, and butyl rubber.
(2) Examples of the elastomer include a styrene elastomer, a vinyl chloride elastomer, an olefin elastomer, a polyester elastomer, a polyamide elastomer, and a urethane elastomer.
(3) Examples of the closed cell body include polyethylene foam, polyvinyl chloride foam, and polystyrene foam.

  As shown in detail in FIG. 2, in the application body 10, the application portion 10 a is a portion extending further forward from the opening position of the discharge port 24 a and is formed as a flat portion 25. The communication path 24 extends straight from the front shaft 3 in the axial direction, bends in the shape of a "<" in the vicinity of the upper surface tapered portion 21 and is exposed in the vicinity of the upper surface tapered portion 21, and the discharge port 24a is opened. The communication passage 24 and the discharge port 24a are formed in a semicircular cross-sectional shape.

  In the liquid applicator 1 in a normal use state, the user operates the liquid pressurizing mechanism 6 with the applicator body 10 directed downward or laterally, whereby the coating liquid 4 in the coating liquid storage space 2b is operated. Pressurize. The coating liquid 4 is discharged from the discharge port 24 a of the communication path 24 under pressure. The discharged coating liquid 4 once flows out to the upper surface taper portion 21 side, flows to the flat surface portion 25 side, and is temporarily held in the flat surface portion 25. The amount of the coating liquid 4 held in the flat portion 25 depends on the type of cosmetic used.

  Then, the user applies the coating liquid by pressing the flat portion 25 against the target site desired to be applied with an appropriate pressing force.

  The application body 10 is made of a transparent or colored translucent material so that the application liquid in the communication path can be visually observed.

  Next, the operation of the above-described embodiment will be described.

[Usability and application performance when the vertical repulsion force of the coated body is set]
FIG. 3 is an explanatory view for setting the repulsive force of the application body 10, FIG. 4 is a measurement explanatory view of the repulsive force of Comparative Examples 1-2 and Examples 1-9 in which the material of the application body 10 is various, and FIG. Example of measurement results of use feeling and coating unevenness of Comparative Examples 1 and 2 and Examples 1 to 8, FIG. 6 illustrates a method for evaluating coating unevenness, FIG. 7 illustrates an evaluation standard for coating unevenness, and FIG. FIG. 9 is an explanatory diagram for evaluating coating unevenness.

  In the application body 10 of the embodiment, the application portion 10a has a vertical repulsion force of 0.01 to 1.40 (N) at a portion 3 mm from the tip.

  The repulsive force of the coating portion 10a was detected by a force gauge 40 as shown in FIG. The force gauge 40 is moved backward by the strength of the force applied to the detection end 40a with the saucer and detects the force (a numerical value (N) is displayed on the display unit 40b).

  Specifically, as shown in FIGS. 4 to 5, each of the resin products (Q100F to an elastomer prototype material) was used as a material to form each coated body as Comparative Examples 1-2 and Examples 1-9. .

  About these comparative examples 1-2 and Examples 1-9, as shown in FIG. 3, the part of 3 (mm) from the front-end | tip of the application part is set to the detection end part 40a in the horizontal direction (the advancing / retreating direction of the detection end part 40a). In this state, the force (N) that the detection end portion 40a receives from the coating portion was measured as a state of contact in a slidable manner from the vertical direction.

In each example, the material (shape) is also changed to create an application body.
Comparative Example 1: Soft polypropylene (Soft PP: trade name Catalloy, grade name Q100F, manufactured by Sun Allomer Co., Ltd.)
Comparative Example 2: Data 5 (thermoplastic resin product)
Example 1: Data 4 (thermoplastic resin product)
Example 2: Soft polypropylene (soft PP: trade name Newcon, grade name NNT2005, manufactured by Nippon Polypro Co., Ltd.)
Example 3: Data 3 (thermoplastic resin product)
Example 4: Data 2 (thermoplastic resin product)
Example 5: Thermoplastic polyurethane (one type of elastomer resin: trade name PANDEX, grade name T-8375, manufactured by DCI Bayer Polymer Co., Ltd.)
Example 6 A spatula shape was formed using the same material as in Example 5.
Example 7: Data 1 (thermoplastic resin product)
Example 8: Silicone material having a hardness of 50 degrees (comp)
Example 9: Elastomer prototype material

  The data 1 to data 5 are inventors of thermoplastic resin products so that the elastic force located between the resin products used in each example can be obtained in terms of the data of the force (N) received from the application part. Are adjusted to create a coated body.

  The results of measuring the elastic force of the tip portion of the application body to be actually applied are shown in FIGS.

  In addition, in each of these coated bodies, the feeling of use when actually applied and the evaluation value for occurrence of uneven coating were evaluated. The evaluation results are shown in FIG.

  In the evaluation of the feeling of use, the tester applied the bulk to each case of the coated body to evaluate the feeling of use. The usability evaluation in FIG. 5 is “◎”: good, “◯”: slightly good, “△”: normal, “black △”: somewhat hard and difficult to use, “×”: hard and difficult to use. is there.

Regarding the evaluation of occurrence of coating unevenness at each viscosity, the bulk of the coating liquid is generally 10,000 (mPa · s) as a general viscosity for makeup cosmetics (at a shear rate of 5 (sec ⁻¹ )). A test was conducted. The viscosity range was 1/10 of 1,000 (mPa · s) and 10 times that of 100,000 (mPa · s).

  Further, as shown in FIG. 6, the coating unevenness evaluation test is performed by dropping the bulk 44 on the non-absorbing surface 42 having a thickness of 3 (mm) and moving the application body along the non-absorbing surface at a constant speed. The bulk was spread by the application body 10.

  The state of the spread bulk 44 was observed, and five grades of “◎”, “◯”, “Δ”, “black Δ”, and “×” were evaluated. As shown in FIG. 7, this evaluation standard is evaluated as “◎”: good (a state in which the coating liquid is uniformly applied and spread on the coated surface), and evaluation “×”: defective (a coating liquid on the coated surface is applied). It was scraped off by the body and could not be spread at all). The evaluations “◯” to “black Δ” are intermediate between them, and were evaluated according to the degree.

  The applied body was moved at an early speed (150 mm / sec) and a slower speed (50 mm / sec).

  As shown in FIG. 5, the evaluation results were that in Comparative Examples 1 and 2, the feeling of use was hard, the coating unevenness at each viscosity was bad, and any evaluation was bad.

  On the other hand, in Example 1, the feeling of use was slightly hard and the coating unevenness was slightly non-uniform, but there was no blur.

  In Examples 2 to 9, the feeling of use is normal to good, and uneven coating does not occur at all, which does not occur at all. Accordingly, in the present invention, the application portion has a vertical repulsion force of 0.01 to 1.4 (N) at a portion 3 (mm) from the tip, thereby providing good usability and little coating unevenness. It can be a body.

  In particular, Examples 4 to 9 are particularly preferable because the feeling in use is good and there is no coating unevenness regardless of the viscosity of the coating solution, and the coating properties are good.

  Therefore, if the application portion of the application body has a vertical repulsion force of 0.01 to 0.70 (N) at a portion 3 mm from the tip, the application is more usable and less uneven coating is applied. It can be a body. In particular, when the coating solution has a viscosity range of 1,000 (mPa · s) to 100,000 (mPa · s), there is no coating unevenness and the coated body has good coating properties.

[Coating performance by setting the dimensions of the coated part of the coated body]
As shown in FIG. 8, the application portion 10a of the application body 10 of the embodiment has a distance L from the discharge port 24a to the tip within the dimension range of 1 ≦ L ≦ 20 (mm), and from the discharge port 24a. It is assumed that the width W of the portion up to the tip is in the dimension range of 2 ≦ W ≦ 20 (mm). The evaluation in this case is shown in FIG.

  When the relationship between the width W and the length L of the coating portion 10a exceeded the above range, it was difficult to apply, and when the relationship was within the range, the coating property was good.

  In addition, it is desirable that the width W and the length L of the application portion 10a are appropriately selected in accordance with the application target within the above range.

[Make the material of the coated body transparent or translucent]
In the embodiment, as shown in FIG. 2, the application body 10 is made of a transparent or translucent material so that the application liquid in the communication path can be visually observed. It is more preferable to make the color different from that of the coating solution to make it translucent.

  By doing so, the color of the coating liquid supplied to the coating body can be seen through the transparent or translucent coating body even if the coating liquid tank inside the main body is not visible. In addition, it is possible to visually confirm how the coating liquid comes out, and it is possible to prevent the coating liquid from being excessively discharged at the start of use.

  Next, a modification of the embodiment will be described.

  The application body 10 of the liquid applicator in the embodiment can be variously modified as shown in FIGS. 1 to 2 as well as Modifications 1 to 7 shown in FIGS. In addition, the whole structure of a liquid applicator is the same as that of embodiment of FIGS. 1-2, and attaches | subjects the same code | symbol to the same part.

  The application body 10A according to Modification 1 of FIG. 10 has no step on the upper taper portion 21 and is integrally formed flat from the rear of the discharge port 24a to the flat portion 25. The discharge port 24a is always open.

  The application body 10C according to the modified example 2 of FIG. 11 has no step on the upper surface taper portion 21, but the upper surface taper portion 21 and the lower surface taper portion 22 become thinner as if the rear side close to the front shaft 3 has been removed. In the front, it is integrally formed flat from the rear of the discharge port 24a to the flat portion 25. The discharge port 24a is always open.

  The application body 10D according to the modified example 3 of FIG. 12 has no step on the upper surface taper portion 21 and is integrally formed flat from the rear of the discharge port 24a to the flat surface portion 25, but the lower surface taper portion 22 opens downward. The applicator body 10 generally has a downward warping shape from the rear to the front in a side view. The discharge port 24a is always open.

  In the coating body 10D according to the third modification, the coating liquid 4 discharged from the discharge port 24a stays on the upper surface taper portion 21 and retains more coating liquid than the coating body according to the third modification. It is easy to apply, and it is easy to make it adhere in a wide range from the base end to the tip end of the application body at the time of application to the target site, and can be spread widely. Moreover, the elasticity of the whole application body 10D can be softened by the arc-shaped setting of the lower surface taper part 22.

  14A to 14C are applied bodies 10E to 10G according to the modified examples 4 to 6, and are examples in which the discharge port 24a opened in the upper surface tapered portion 21 is variously changed.

In the application body 10E of the modified example 4 shown in FIG. 14A, the discharge port 24a is semicircular, and the application liquid tends to come out forward. Further, in the application body 10F of the modified example 5 shown in (b), the discharge port 24a is circular, and the application liquid tends to come out front and back. Moreover, the application body 10G of the modified example 6 shown in (c) has a rectangular discharge port 24a.
In the embodiment, the communication passage 24 is bent in the shape of a “<” in the upper surface taper portion 21 in the vicinity of the upper surface taper portion 21, but the discharge passage 24 a may be formed by extending the communication passage 24 straight in the axial direction. Is possible.

It is an example of the form which implements the liquid applicator which concerns on this invention, Comprising: It is the whole longitudinal view of the liquid applicator which concerns on Embodiment 1. FIG. It is detail explanatory drawing of the application body which concerns on embodiment. It is explanatory drawing of the repulsive force setting of an application body. It is measurement explanatory drawing of the repulsive force of Comparative Examples 1-2 and Examples 1-9 which made the material of the application body various. It is explanatory drawing of a measurement result example of the usability | use_condition and coating nonuniformity of Comparative Examples 1-2 and Examples 1-9. It is explanatory drawing of the evaluation method of a coating nonuniformity. It is explanatory drawing explanatory drawing of the evaluation standard of coating nonuniformity. It is explanatory drawing of the width W of an application body, and the length L of an application part. It is evaluation explanatory drawing of the coating nonuniformity. It is explanatory drawing of the modification 1 of the application body of a liquid applicator, Comprising: (a) is a side view from the upper surface taper part side, (b) It is a side view of this taper part. It is explanatory drawing of the modification 2 of the application body of a liquid applicator, Comprising: (a) is a side view from an upper surface taper part side, (b) It is a side view of this taper part. It is explanatory drawing of the modification 3 of the application body of a liquid applicator, Comprising: (a) is a side view from an upper surface taper part side, (b) It is a side view of this taper part. (A)-(c) is explanatory drawing of the modifications 4-6 of the application body of a liquid applicator, Comprising: It is each side view from an upper surface taper part side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Liquid application tool 4 Application liquid 6 Liquid pressurization mechanism 7 Cap 10 Application body 10A-10H Application body 10a Application part 21 Upper surface taper part 22 Lower surface taper part 24 Communication path 24a Discharge port 25 Flat part 40 Force gauge 40a Detection end part 40b Display portion 42 Non-absorbing surface 44 Bulk 46 Outer shaft 46a Rear end opening 46b Front end opening 47 Liquid introduction pipe 48 Inner shaft 48a Male thread portion 48b Tank 49 Front shaft 50 Pipe 51 Seal ring 52 Stirring ball 53 Spring receiver 53a Window 54 Valve rod 54a Piston blade 55 Valve spring 56 Valve seat 56a Valve port 57 Inner shaft 58 Seal body

Claims (1)

An outer shaft that is open at both front and rear ends, an application body provided at the outer shaft tip, a front shaft that projects and fits the application body forward and is fixed to the outer periphery of the front end opening of the outer shaft, and an internal application A coating liquid is stored in the liquid storage space, and includes an inner shaft that is movable in the axial direction of the outer shaft and whose rear end projects from the rear shaft opening of the outer shaft, and a cap that covers at least the coating body.
A liquid introduction pipe that is press-fitted into the outer shaft front end portion in a watertight state and is slidably fitted with the inner shaft in a watertight state, and is press-fitted into the inner periphery of the male screw portion at the front end of the inner shaft. And a spring receiver having a window on the peripheral wall, a valve rod provided with a piston blade slidingly contacted with the inner periphery of the spring receiver in a watertight state, a valve spring for urging the valve rod forward in the spring receiver, In a liquid applicator provided with a liquid pressurizing mechanism having a valve opening press-fitted into an inner periphery of a spring receiver and a front end portion of the valve spring detachably contacted,
The application body is formed of a flat tapered elastic material having a semi-circular tip at the application surface viewed in the vertical direction and having a substantially flat application surface, and is applied from the coating liquid storage space of the inner shaft through the inside of the front shaft. A communication path leading to the body tip is formed,
A circular or semi-circular discharge port that opens in a direction substantially perpendicular to the substantially planar application surface has a central portion of the approximately planar application surface,
The distance L from the discharge port to the tip of the application body is within the dimension range of 1 (mm) ≦ L ≦ 20 (mm),
The width W of the central part of the application body is in the dimension range of 2 (mm) ≦ W ≦ 20 (mm), and the application body has a vertical repulsive force of 0.01 (3) from its tip. A liquid applicator characterized by being (N) to 1.40 (N).