Cosmetic applicator

Abstract

To provide a cosmetic applicator allowing a user to easily and reliably apply liquid cosmetics to various application surfaces, for example, an inner corner, a center and an outer corner of the eye, or a lower eyelash, etc. by easily and quickly determining and selecting an optimal application area with a screw brush of the cosmetic applicator.SOLUTION: A screw brush 8 of a cosmetic material applicator 5 includes a curved surface 11 and a flat surface 12 coexisting flatly in the screw brush 8 by forming the curved surface 11 by bending and the flat surface 12 at a position facing the curved surface 11 with a stem 9 interposed therebetween, so that for various application surfaces, an optimal application area with the screw brush of the cosmetic applicator can be easily and quickly determined and selected using the flat surface as a marker, thus allowing for simple and reliable application of liquid cosmetics.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a cosmetic applicator used for applying liquid cosmetics such as mascara, eyebrow pencils, etc. (hereinafter referred to as "liquid cosmetics"). [Background technology]

[0002] In the cosmetic applicator used when applying the liquid cosmetic, a screw brush has the cosmetic applicator at one end of a shaft that is integrally held in a cap, and various cuts are made on the surface of the brush fibers that make up the screw brush depending on the condition of the surface to which the liquid cosmetic is to be applied and the purpose of application.

[0003] For example, in a cylindrical screw brush with a truncated cone at the tip (hereinafter referred to as "approximately cylindrical"), the brush fibers that make up the screw brush extend in radial directions and are equal in length on concentric circles centered on the shaft. As a result, the amount of liquid cosmetic material contained in the brush fibers on concentric circles centered on the shaft in the screw brush is uniform, allowing the liquid cosmetic material to be applied evenly to the application surface (see Patent Document 1). However, with the screw brush, the amount of liquid cosmetic material contained in the brush fibers of the screw brush is uniform on concentric circles, so it is not possible to ensure reliable adhesion to various application surface conditions, such as the inner corner, center, or outer corner of the eye, or the lower eyelashes, and because the amount of liquid cosmetic material is constant, it is not possible to apply the liquid cosmetic material easily and accurately in accordance with the condition of the application surface and the purpose of application.

[0004] Furthermore, in a screw brush that is roughly cylindrical and has an irregular cross section, surfaces, edges, etc. are formed in various locations throughout the screw brush, resulting in variations in length and shortness of the brush fibers that make up the screw brush. As a result, the surfaces, edges, etc. formed in the various use locations of the screw brush in accordance with the various shapes of application surfaces reliably adhere to the application surface, making it possible to easily and reliably apply liquid cosmetics to the application surface (see Patent Document 2). However, when attempting to select the surface portions, edges, etc. formed on various parts of the brush fibers of the screw brush in accordance with the condition of the application surface and the purpose of application when applying liquid cosmetics, it is not possible to easily and accurately determine and select the area of ​​use that is optimal for the condition of the application surface and the purpose of application on which the liquid cosmetics will be applied, i.e., the surface portions, edges, etc. formed on the brush fibers of the screw brush.

[0005] Furthermore, in the case of a screw brush that is curved or bent as a whole, the curved or bent surface formed on the curved or bent screw brush fits securely to the curvature or bend of the application surface, making it possible to apply liquid cosmetics evenly and over a wide area at once (see Patent Document 3). However, when attempting to remove the cosmetic applicator from the cosmetic container body and use a stroking motion to remove the excess liquid cosmetic contained in the screw brush, an excess amount of liquid cosmetic is applied to the top side formed at the opposite position across the axial portion of the curved or bent surface formed by bending or curving the curved or bent screw brush, while the liquid cosmetic is not sufficiently applied to the curved or bent surface, which can easily result in unevenness on the application surface where the liquid cosmetic is applied. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-24871 [Patent Document 2] Japanese Patent Application Laid-Open No. 2005-279264 [Patent Document 3] Japanese Patent Application Publication No. 2018-134422 Summary of the Invention [Problem to be solved by the invention]

[0007] Therefore, when applying liquid cosmetics, the device allows the user to easily and quickly determine and select the optimum area of ​​the screw brush to be used in accordance with the condition of the application surface, such as the inner corner, center, outer corner, or lower eyelashes, and the purpose of application, and also allows application to be easily and reliably performed in accordance with the purpose of application. [Means for solving the problem]

[0008] The first feature is, The cosmetic application body is integrally held in a cap that is detachable from the cosmetic container body and is composed of a screw brush that applies the liquid cosmetic and a holding shaft that holds the screw brush at one end, The screw brush is comprised of a deformable shaft portion and a cylindrical brush fiber body (hereinafter referred to as "approximately cylindrical") that is radially arranged around the shaft portion and has a truncated cone-shaped tip, The brush fiber body has a curved or bent surface formed along the shaft direction, and a flat surface formed along the shaft at a position opposite the curved or bent surface across the shaft. Furthermore, based on the first characteristic, the second characteristic in particular is: The cross section of the substantially cylindrical screw brush is made to have an irregular cross section.

[0009] Therefore, by using the flat surface formed at a position opposite the shaft of the curved or bent surface formed on the approximately cylindrical screw brush that constitutes the cosmetic applicator body as a landmark, the user can easily and quickly determine and select not only the curved or bent surface but also the area of ​​use formed on the screw brush that suits the purpose of use.

[0010] Furthermore, there are curved or bent surfaces at positions opposite the shaft of the flat portion formed in the screw brush, and the use areas are located at various positions on the screw brush.Therefore, even if the application surface to which the liquid cosmetic is applied is curved or bent and has various other conditions, the curved or bent surface of the screw brush will adhere accurately, and the amount of liquid cosmetic contained in the brush fibers of the screw brush on a concentric circle centered on the shaft is uniform, so the liquid cosmetic can be applied to the application surface easily, reliably, and evenly.

[0011] Furthermore, when the cross section of the screw brush is an irregular cross section, various types of flat surfaces, curved or bent surfaces, straight edges along the axial direction, etc. are formed at various positions on the screw brush, and since the fiber lengths of the brush fiber body of the screw brush vary, the various types of flat surfaces, curved or bent surfaces, straight edges along the shaft, etc. formed at various positions on the screw brush to correspond to application surfaces of various shapes can reliably adhere to the condition of the application surface, and liquid cosmetics can be applied to the application surface according to the application purpose.

[0012] Furthermore, the flat surface formed on the screw brush reduces the diameter of the brush fibers constituting the screw brush in the cross-sectional direction, which reduces the resistance to the scraping that occurs when the screw brush is extracted from the cosmetic container body, making it smoother. As a result, the liquid cosmetic contained in the brush fibers of the screw brush can be distributed uniformly throughout the entire brush fibers.

[0013] Furthermore, the flat surface formed on the surface of the brush fiber body of the screw brush is widely and securely in contact with the smooth application surface, so that liquid cosmetics can be easily and reliably applied over a wide area of ​​the application surface. [Effects of the Invention]

[0014] The present invention has the excellent effect of using the flat surface of the brush fiber body of the screw brush to easily and quickly determine and select the optimal area of ​​the brush fiber body of the screw brush when applying liquid cosmetics, and also homogenizing the liquid cosmetics contained in the brush fiber body of the screw brush as a whole, so that the liquid cosmetics can be easily and reliably applied to any application surface, and by using the flat surface, the liquid cosmetics can be applied evenly over a wider area, and also easily and reliably. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a longitudinal sectional view of a cosmetic container according to a first embodiment of the present invention. [Figure 2] FIG. 2 is an overall longitudinal cross-sectional view of a cosmetic container according to the first embodiment of the present invention in an exploded state. [Figure 3] FIG. 3 is an enlarged top view and front view of a main part of the screw brush of the cosmetic applicator according to the first embodiment of the present invention. [Figure 4] FIG. 4 is an enlarged side view and a front view of a main part showing the manufacturing process of the screw brush of the cosmetic applicator according to the first embodiment of the present invention. [Figure 5] FIG. 5 is an enlarged side view and a front view of a main part showing a processing step for a screw brush of a cosmetic application body according to a second embodiment of the present invention. [Figure 6] FIG. 6 shows an enlarged top view and front view of a main part of a screw brush of a cosmetic applicator according to a third embodiment of the present invention, as well as an enlarged side view and front view of a main part. [Figure 7] FIG. 7 shows an enlarged top view and front view of a main part of a screw brush of a cosmetic applicator according to a fourth embodiment of the present invention, as well as an enlarged side view and front view of a main part. [Figure 8] FIG. 8 shows an enlarged top view and front view of a main part of a screw brush of a cosmetic applicator that is Example 5 of the present invention, as well as an enlarged side view and front view of a main part. DETAILED DESCRIPTION OF THE INVENTION

[0016] For this purpose, flat surfaces are formed at positions facing each other across the shaft portion of the curved or bent surface formed on the screw brush that constitutes the cosmetic applicator. [Example]

[0017] FIG. 1 shows a cosmetic container 1 equipped with a cosmetic application body 5 according to a first embodiment of the present invention, and the cosmetic container 1 is composed of a cap 4 and a cosmetic container body 2 to which the cap 4 can be attached and detached.

[0018] The cosmetic container body 2 constituting the cosmetic container 1 contains liquid cosmetic material 3 (hereinafter referred to as "liquid cosmetic material 3"), such as mascara or eyebrow pencil, and has an opening 2a that leads to the interior containing the liquid cosmetic material 3, and a squeezer 2b is attached to the opening 2a.

[0019] Furthermore, the cap 4 constituting the cosmetic container 1 firmly holds the cosmetic applicator 5 therein. Furthermore, the cosmetic applicator 5 has a screw brush 8 at one end of a holding shaft 6, and a base 7 at the other end that is larger in diameter than the shaft and fits into the cap 4.

[0020] Therefore, the screw brush 8 attached to one end of the fixed shaft 6 consists of a deformable shaft portion 9 and an approximately cylindrical brush fiber body 10 that extends radially from the shaft portion 9 and has a truncated conical tip, and the brush fiber body 10 forms a curved surface 11 and a flat portion 12 along the shaft portion 9 at a position opposite the curved surface 11 across the shaft portion 9.

[0021] Therefore, since the screw brush 8 in the cosmetic applicator 5 of Example 1 has the above-mentioned shape, it is manufactured as shown in FIG. That is, in a screw brush 8 [Figure (a)] consisting of a freely deformable shaft portion 9 and an approximately cylindrical brush fiber body 10 centered on the shaft portion 9, the brush fiber body 10 is curved to form a curved surface 11 [Figure (b)]. Furthermore, a flat portion 12 is formed by cutting at a position opposite the shaft portion 9 of the formed curved surface 11 so as to include the curved apex 14 to be formed [Figure (c)].

[0022] As described above, in the screw brush 8 of the cosmetic applicator 5 of Example 1, the curved surface 11 and the flat surface 12 coexist as a single unit, so that for various application surfaces such as the inner corner, center, outer corner, or lower eyelashes, the optimal application area formed on the screw brush 8 can be easily and quickly determined and selected using the flat surface 12 as a marker. As a result, the screw brush 8 adheres closely to the application surface, making it possible to apply the liquid cosmetic 3 easily and reliably. [Example]

[0023] FIG. 5 shows a screw brush 8a of a cosmetic applicator 5a according to a second embodiment of the present invention, and the screw brush 8a is identical to the screw brush 8 of the first embodiment in terms of structure and overall shape.

[0024] However, it differs from the screw brush 8 in the cosmetic applicator 5 of Example 1 in its manufacturing process. That is, the screw brush 8a of the cosmetic applicator body 5a of Example 2 is composed of a deformable shaft portion 9a and a substantially cylindrical brush fiber body 10a centered on the shaft portion 9a [Fig. 1(a)], and first the curved surface 11a is formed by cutting [Fig. 1(b)]. Furthermore, by bending the curved surface 11a formed by cutting processing to form a flat portion 12a, a new curved surface 11a is formed along the shaft portion 9a at a position opposite the flat portion 12a across the shaft portion 9a [Figure (c)].

[0025] Therefore, in the screw brush 8a of the cosmetic applicator body 5a of Example 2, similar to Example 1, the curved surface 11a and the flat surface 12a coexist integrally, and therefore, for various application surfaces such as the inner corner, center, outer corner, or lower eyelashes, the optimum application area formed on the screw brush 8a can be easily and quickly determined and selected using the flat surface 12a as a landmark. As a result, the screw brush 8a comes into close contact with the application surface, making it possible to apply the liquid cosmetic 3 easily and reliably. [Example]

[0026] FIG. 6 shows a screw brush 8b of a cosmetic application unit 5b according to a third embodiment of the present invention, and the screw brush 8b has the same structure as the cosmetic application unit 8 of the first embodiment.

[0027] However, the overall shape of the screw brush 8b of the cosmetic application body 5b is different from that of the screw brush 8 of the first embodiment. That is, the screw brush 8b of the cosmetic applicator 5b of Example 3 consists of a deformable shaft portion 9b and a roughly cylindrical brush fiber body 10b that extends radially from the shaft portion 9b, and the brush fiber body 10b of the screw brush 8b forms a curved surface 11b and also forms a flat portion 12b along the shaft portion 9b at a position opposite the formed curved surface 11b across the shaft portion 9b.

[0028] Therefore, since the screw brush 8b in the cosmetic application body 5b of Example 3 has the above-mentioned shape, it is manufactured as follows. That is, in a screw brush 8b comprising a deformable shaft portion 9b and a substantially cylindrical brush fiber body 10b centered on the shaft portion 9b, the brush fiber body 10b is bent to form a bent surface 11b. Furthermore, a flat surface portion 12b is formed by cutting at a position facing the curved surface 11b across the shaft portion 9b so as to include a top portion bent along the shaft portion 9b.

[0029] As described above, the screw brush 8b of the cosmetic applicator of Example 3 has the curved surface 11b and the flat surface 12b coexisting as an integrated unit, so that the optimum application area formed on the screw brush 8b can be easily and quickly determined and selected for various application surface conditions, such as the inner corner, center, outer corner, or lower eyelashes of the eye. As a result, similar to the screw brush 8 of the cosmetic applicator of Example 1, the screw brush 8b adheres closely to the application surface, making it possible to apply the liquid cosmetic 3 easily and reliably. [Example]

[0030] FIG. 7 shows a screw brush 8c of a cosmetic application unit 5c according to a fourth embodiment of the present invention, and the cosmetic application unit 5c has the same structure as the cosmetic application units 5, 5a, and 5b of the first to third embodiments.

[0031] However, it differs from the screw brush 8 in the cosmetic applicator 5 of Example 1 in its overall shape. That is, the screw brush 8c of the cosmetic applicator body 5c of Example 4 comprises a deformable shaft portion 9c and a brush fiber body 10c having an approximately cylindrical shape centered on the shaft portion 9c, and the curved surface 11c is formed as two flat portions 15, 15 that are formed to intersect so that the cross section is triangular, and at a position opposite the shaft portion 9c of the curved surface 11c, a flat portion 12c is formed so as to include a curved apex.

[0032] Therefore, since the screw brush 8c in the cosmetic applicator 5c of Example 4 has the above-mentioned shape, it is manufactured as follows. That is, the screw brush 8c is composed of a freely deformable shaft portion 9c and a brush fiber body 10c having an approximately cylindrical shape centered on the shaft portion 9c, and two flat portions 15, 15 are formed so that the cross section intersects with each other in a triangular shape, i.e., the intersecting portion forms a curved side portion 13. Furthermore, in the screw brush 8c, the brush fiber body 10c is curved to form a curved surface 11c, and a flat portion 12c is formed at a position opposite to the curved surface 11c across the shaft portion 9c so as to include a curved apex along the shaft portion 9c.

[0033] As described above, the screw brush 8c of the cosmetic applicator body 5c of Example 4, like Example 1, has the curved surface 11c, flat surface 12c, and side portion 13 coexisting integrally, so that the optimal application area formed on the screw brush 8c can be easily and quickly determined and selected for various application surface conditions, such as the inner corner, center, outer corner, or lower eyelashes of the eye. As a result, similar to the screw brush 8 of the cosmetic applicator 5 of Example 1, the screw brush 8c adheres closely to the application surface, allowing the liquid cosmetic 3 to be applied easily and reliably. [Example]

[0034] FIG. 8 shows a screw brush 8d of a cosmetic application body 5d, which is Example 5 of the present invention. The screw brush 8d of the cosmetic application body 5d has the same structure as the cosmetic application bodies 5, 5a, 5b, and 5c of Examples 1 to 4.

[0035] However, it differs from the screw brush 8 in the cosmetic applicator 5 of Example 1 in its overall shape. That is, in the substantially cylindrical screw brush 8d, two flat surfaces 17, 17 are formed so as to face each other along the shaft portion 9d, and a flat surface 16 is formed so as to be perpendicular to the two flat surfaces 17, 17. Furthermore, the flat surface 16 that is perpendicular to the other two flat surfaces 17, 17 is formed as a curved surface 11d, and a flat surface 12d is formed at a position facing the curved surface 11d across the shaft portion 9d.

[0036] Since the screw brush 8d in the cosmetic application body 5d of Example 5 has the above-mentioned shape, it is manufactured as follows. That is, in a screw brush 8d consisting of a freely deformable shaft portion 9d and an approximately cylindrical brush fiber body 10d centered on the shaft portion 9d, two flat surfaces 17, 17 facing each other along the shaft portion 9d are formed, and further a flat surface 16 perpendicular to the two flat surfaces 17, 17 is formed. Furthermore, the flat surface 16 that is perpendicular to the other two flat surfaces 17, 17 is curved to form a curved surface 11d, and peaks are formed at positions that face the curved surface 11d across the shaft 9d. Then, the screw brush 8d is cut so as to include the apex formed at a position facing the curved surface 11d across the shaft portion 9d, thereby forming the flat portion 12d.

[0037] As described above, the screw brush 8d of the cosmetic applicator body 5d of Example 5, like Example 1, has the curved surface 11d and the flat surface 12d coexisting as an integrated unit, so that the optimal application area formed on the screw brush 8d can be easily and quickly determined and selected for various application surface conditions, such as the inner corner, center, or outer corner of the eye, or the lower eyelashes. As a result, similar to the screw brush 8 of the cosmetic applicator 5 of Example 1, the screw brush 8d adheres closely to the application surface, allowing the liquid cosmetic 3 to be applied easily and reliably. Moreover, since there are four flat surfaces 17, 17, 16, 12d formed on the brush fiber body 10d of the screw brush 8d, the liquid cosmetic material 3 can be applied evenly over a wider area. [Explanation of symbols]

[0038] 1. Cosmetic containers 2. Cosmetic container body 2a opening 2b Harassment 3. Liquid cosmetics 4 Cap 5, 5a, 5b, 5c, 5d Cosmetic application body 6. Fixed shaft 7 Base 8, 8a, 8b, 8c, 8d Screw Brush 9, 9a, 9b, 9c, 9d shaft part 10, 10a, 10b, 10c, 10d Brush fiber body 11, 11a, 11c, 11d curved surface 11b Bent surface 12, 12a, 12b, 12c, 12d flat section 13 Side 14 Top 15, 16, 17 Plane section

Claims

1. The cosmetic application body is integrally held in a cap that is detachable from the cosmetic container body and is composed of a screw brush that applies the liquid cosmetic and a holding shaft that holds the screw brush at one end, The screw brush is comprised of a deformable shaft portion and a cylindrical brush fiber body (hereinafter referred to as "substantially cylindrical") that is radially arranged around the shaft portion and has a truncated cone-shaped tip, In the brush fiber body, a curved or bent surface is formed along the shaft direction, and a flat surface is formed along the shaft at a position opposite to the curved or bent surface with the shaft portion sandwiched therebetween. A cosmetic application body characterized by:

2. The cross section of the approximately cylindrical screw brush is an irregular cross section.

2. The cosmetic applicator according to claim 1.

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