JP6394131B2 - Cosmetic applicator - Google Patents

Description

  The present invention relates to a cosmetic applicator.

  As a cosmetic applicator such as a mascara or an eyeliner, one having an application body at one end of a shaft is used. In such an applicator, in order to make it easy to apply cosmetics, it has been proposed to bend the application body with respect to the shaft. For example, it has been proposed to form a ball joint at one end of the coated body, attach the ball joint to one end of the cylindrical shaft, and press and hold the ball joint with an elastic body provided inside the cylindrical shaft. (Patent Document 1).

  In addition, it has been proposed that a shaft having an application body at one end is hollowly formed of a soft material, and the thickness is reduced on the application body side to reduce the rigidity (Patent Document 2). ).

Japanese Patent Laid-Open No. 10-99127 JP 2005-185360 A

  However, in the cosmetic applicator using the above-described ball joint and the cosmetic applicator using a soft hollow shaft, the applied body bends in the same direction in any direction with respect to the shaft. Sometimes the applicator flexes unintentionally in an unintended direction, and the desired makeup cannot be achieved.

  Therefore, the problem to be solved by the present invention is that the cosmetic applicator provided with the application body at one end of the shaft makes it easy to apply the cosmetic by giving the application body a directional bend, It relates to improving the feel when applying cosmetics.

In order to solve the above-described problems, the present invention is a cosmetic applicator that has a coated body for applying cosmetics, a shaft having the coated body at one end, and an outer cylinder into which the shaft is inserted.
The shaft has a shaft body and a flexible part provided on the application body side of the shaft body,
The flexible part has a hole, and there is a thin plate part on the peripheral wall of the hole,
Provided is a cosmetic applicator in which a groove extending from a hole of a flexible portion is provided on an application surface of an application body.

  According to the cosmetic applicator of the present invention, since the shaft has a directional bend that the shaft is easily bent in a specific direction, the cosmetic can be easily applied. Moreover, the soft touch at the time of application | coating can be acquired according to the ease of bending of a axial part.

  In addition, according to the cosmetic applicator of the present invention, since the shaft portion is easily bent without depending on the shape and material of the application body, even if the application body itself has a high rigidity, it feels soft when applied. Can be obtained.

  Furthermore, when the cosmetic applicator of the present invention is used for a liquid cosmetic, the cosmetic is accumulated in the hole of the flexible part, and the cosmetic is pushed out from the hole by bending of the flexible part. Is led to the application surface of the application body through a groove, so that the cosmetics reduced from the application surface by application can be compensated for during the application of the cosmetics.

FIG. 1 is an exploded view of a cosmetic applicator 1A according to an embodiment. FIG. 2A is a perspective view of the cosmetic applicator 1A according to the embodiment as viewed obliquely from the front. FIG. 2B is a perspective view of the cosmetic applicator 1A of the embodiment as viewed obliquely from the back (application surface side). FIG. 2C is a rear view of the cosmetic applicator 1A according to the embodiment. FIG. 2D is an XX cross-sectional view of the cosmetic applicator 1A of the example. FIG. 2E is a YY sectional view of the cosmetic applicator 1A of the example. FIG. 3A is a front view showing the operation of the cosmetic applicator 1A of the embodiment. FIG. 3B is a front view illustrating the operation of the cosmetic applicator 1A according to the embodiment. FIG. 4A is a perspective view of the vicinity of the application body of the cosmetic applicator 1B of the embodiment. FIG. 4B is a rear view of the vicinity of the application body of the cosmetic applicator 1B of the embodiment. FIG. 4C is an XX cross-sectional view of the vicinity of the application body of the cosmetic applicator 1B of the example. FIG. 5A is a perspective view of the vicinity of the application body of the cosmetic applicator 1C of the embodiment. FIG. 5B is a rear view of the vicinity of the application body of the cosmetic applicator 1C of the embodiment. FIG. 5C is an XX cross-sectional view of the vicinity of the application body of the cosmetic applicator 1C of the example. FIG. 6A is a perspective view of the vicinity of the application body of the cosmetic applicator 1D according to the embodiment. FIG. 6B is a rear view of the vicinity of the application body of the cosmetic applicator 1D according to the embodiment. FIG. 7 is a perspective view of the vicinity of the application body of the cosmetic applicator 1E of the embodiment. FIG. 8A is a perspective view of the vicinity of the application body of the cosmetic applicator 1F of the embodiment. FIG. 8B is a cross-sectional view of the vicinity of the application body of the cosmetic applicator 1F of the example. FIG. 9 is a cross-sectional view of the vicinity of the application body of the cosmetic applicator 1G of the example. FIG. 10 is a cross-sectional view of the vicinity of the application body of the cosmetic applicator 1H of the example. FIG. 11 is a cross-sectional view of a cosmetic using the cosmetic applicator of the present invention.

Embodiments of the present invention will be specifically described below with reference to the drawings. In each figure, the same numerals indicate the same or equivalent components.
FIG. 1 is an exploded view of a cosmetic applicator 1A according to an embodiment of the present invention, and is a perspective view of a shaft 20 having an application body 10 at one end and an outer cylinder 40. FIG. FIG. 2B is a perspective view of the tool 1A as viewed obliquely from the front, FIG. 2B is a perspective view of the tool 1A as viewed obliquely from the back (application surface side), FIG. 2C is a rear view thereof, and FIGS. It is sectional drawing.

  This cosmetic applicator 1A is an applicator suitable for applying liquid cosmetics such as liquid lipstick, nail polish, concealer and eye shadow, and particularly liquid cosmetics such as liquid lipstick and nail polish. , An application body 10 to be applied to an application part such as skin, a shaft 20 having the application body 10 at one end, and an outer cylinder 40 into which the shaft 20 is inserted. Here, the application body 10 and the shaft 20 are integrally formed of a flexible resin such as polyurethane elastomer.

  The application body 10 is a drop type having a rounded tip in plan view, and has a flat application surface 11. Here, the application surface refers to a surface that can come into contact with a portion to be applied in a normal usage method of the application body 10. In the cosmetic applicator 1 </ b> A of the present embodiment, an elliptical flat surface formed on one surface of the application body 10. It is. In the application body 10, the width of the application surface 11 gradually decreases from the widest portion toward the distal end side of the application surface 11 and the flexible portion 22 of the shaft body 21. The widest part can be set at any place on the application surface 11, but preferably, as shown in FIG. 2C or FIG. 4B, it is provided on the side closer to the flexible part 22 than the central part of the application surface 11. A shape that gradually narrows toward the tip side is desirable. There may be a plurality of widest portions.

  The shaft 20 includes a columnar shaft main body 21 and a flexible portion 22 provided on the application body 10 side.

  The flexible portion 22 has a hole portion 23 that penetrates the shaft 20 from the application surface 11 side to the opposite surface side, and the peripheral wall 24 of the hole portion 23 has a pair of curved thin plate portions 25a and 25b. . The plate thickness L1 of the thin plate portions 25a and 25b is smaller than the diameter L2 of the shaft body 21 and smaller than the inner diameter (hole width) L3 of the hole portion 23 (FIG. 2E), and the thin plate portion 25a of the hole portion 23 in the axis P2 direction. , 25b, which is thinner than the plate width L6 (FIG. 2D).

  The flexible portion 22 has a narrow-diameter portion 26 that is smaller in diameter than the diameter L2 of the shaft body 21 on the application body 10 side of the peripheral wall 24 of the hole portion 23, and the shaft body 21 side of the peripheral wall 24 of the hole portion 23. In addition, it has a small diameter portion 27 that is smaller than the diameter L2 of the shaft body 21. The widths L4 and L5 of the small diameter portions 26 and 27 are smaller than the hole width L3 (FIG. 2E).

  In the present invention, the shaft main body 21 and the small diameter portions 26 and 27 can be formed into a columnar shape, an elliptical columnar shape, a prismatic shape, or the like, respectively.

  A groove 12 extending from the hole portion 23 is formed on the application surface 11 side of the flexible portion 22. The groove 12 extends to the tip end portion 13 of the application body 10. The depth of the groove 12 may gradually become shallower toward the tip end portion 13 of the application body 10 as shown in the figure, may be the same, or may gradually become deeper. If the edge of the groove 12 extending to the coating surface 11 is formed in a smooth shape with rounded corners, the feel during coating is good.

The width L10 of the groove 12 can be determined according to the viscosity or the like of the cosmetic applied with the cosmetic applicator. In this embodiment, the width L10 has a certain width on the application surface 11. The width L10 of the groove 12 is, for example, 0.3 to 3.0 mm when the cosmetic viscosity (measured at 30 ° C., B-type viscometer, shear rate 0.2 s ⁻¹ ) is 18000 to 50000 mPa · s. In general, it is preferable to increase the width L10 of the groove 12 as the viscosity of the cosmetic is higher.

  In the present invention, the groove 12 does not have to have a constant width on the application surface 11, and the shape of the groove 12 in a plan view may be formed to be substantially similar to the shape of the application surface 11, for example. The substantially similar shape includes a similar shape used for a so-called mathematical similarity shape, and includes a shape that substantially follows the width of the coating surface 11 although it is not a mathematical similarity shape.

  In addition, in a cross section (FIG. 2D) that bisects the width direction of the application surface 11 perpendicular to the application surface 11, the application surface 11 is inclined at an angle θ with respect to the axial direction P 1 of the shaft body 21. Regardless of this inclination, when the cosmetic applicator 1A is inserted into the cosmetic in the cosmetic container from the application body 10 side, the cosmetic enters the hole 23 through the groove 12, but the application surface 11 is the shaft body 21. Since the opening 23 communicates with the groove 12 directly touches the cosmetic in the cosmetic container, the application surface 11 is relative to the axial direction P1 of the shaft body 21. Compared with the case where it is not inclined, the cosmetic material is likely to enter the hole 23. Thereby, even if the hole part 23 is covered with the outer cylinder 40, cosmetics enter the hole part 23 easily. The inclination angle θ is preferably 5 ° to 45 °, and more preferably 10 ° to 30 °.

  On the other hand, the outer cylinder 40 is a portion used as a grip portion in the cosmetic applicator 1A, and is made of a resin harder than the shaft 20, for example, a thermoplastic resin such as polyethylene terephthalate, polybutylene terephthalate, and polypropylene. It is formed in a cylindrical bottomed cylindrical shape. Further, it is preferable that the shaft 20 is detachably inserted and held in the outer cylinder 40.

  In the present embodiment, the outer cylinder 40 covers the shaft main body 21 and the flexible portion 22 so as not to be exposed from the outer cylinder 40 in a state where the shaft 20 is held. In addition, a gap is formed around the flexible portion 22 so that the flexible portion 22 can swing while the outer cylinder 40 holds the shaft 20.

  Therefore, in this cosmetic applicator 1A, the thin plate portions 25a and 25b are easily bent. When the force in the axial direction P1 that crushes the thin plate portions 25a and 25b is applied to one of the thin plate portions 25a and 25b, the flexible portion 22 bends asymmetrically. When such a force is applied alternately to the thin plate portions 25a and 25b, the application body 10 moves left and right around the flexible portion 22 in a plane approximately parallel to the application surface 11 as indicated by an arrow A in FIG. 3A. Rocks.

  3B, when a force is applied to simultaneously crush the pair of thin plate portions 25a and 25b, the flexible portion 22 contracts in the axial direction P1 of the shaft body 21, and the force is released. The shape of the flexible part 22 is restored. Therefore, the application body 10 moves up and down in the axial direction P1.

The widths L4 and L5 of the small diameter portions 26 and 27 of the flexible portion 22 are sufficiently smaller than the thicknesses L7 and L8 of the small diameter portions 26 and 27 in the direction of the axis P2 of the hole portion 23. In addition, the application body 10 can easily be swung in the A direction even when the small diameter portions 26 and 27 are bent.
On the other hand, since the flexible part 22 is not easily bent in the direction of the axis P2 of the hole 23, the application body 10 is not easily bent in the C direction (FIG. 2D).

  Thus, according to this cosmetic applicator 1A, the application body 10 easily swings left and right within a plane substantially parallel to the application surface 11 (A direction). Accordingly, when the application body 10 is slid on the surface to be applied, the application body 10 can be appropriately swung to the left and right with respect to the traveling direction, and the cosmetic can be easily applied. In addition, the cosmetic applicator 1A has the hole 23 that expands and contracts in the axial direction P1 of the shaft body 21 so that the application body 10 is brought into close contact with the cosmetic application surface or lightly pressed against the application surface. When applied, a soft feel can be obtained. Further, since the flexible portion 22 does not promote movements other than the A direction and the axial direction P1, it is possible to prevent the application body 10 from bending in an unintended direction when applying cosmetics.

The degree of ease of bending in the A direction and the axial direction P1 by the flexible part 22 depends on the part to be applied using the cosmetic applicator 1A, the viscosity of the cosmetic, the hardness of the resin forming the shaft 20 and the application body 10A. Depending on the thickness, the plate width L6 of the curved thin plate portions 25a and 25b, the hole width L3 of the hole portion 23, and the widths L4 and L5 of the small diameter portions 26 and 27 can be determined as appropriate. For example, in the case of applying a liquid cosmetic with a viscosity (measured at 30 ° C., B-type viscometer, shear rate 0.2 s ⁻¹ ) 18000 to 50000 mPa · s to the lips or the like with the cosmetic applicator 1A, 20 and the coated body 10 are molded from polyurethane elastomer resin, the diameter L2 of the shaft body 21 is 2 mm to 5 mm, the widths L4 and L5 of the small diameter portions 26 and 27 are 1 mm to 4.5 mm, and the outside of the hole 23. The diameter is preferably 1 mm to 5 mm, and the inner diameter (hole width) L3 of the hole 23 is preferably 0.5 mm to 4.5 mm.

  Furthermore, according to this cosmetic applicator 1A, since the groove 12 extending from the hole 23 of the flexible portion 22 is formed on the application surface 11, the cosmetic applicator 1A is applied to the makeup body 10 from the application body 10 side. The hole 23 and the groove 12 are filled with the liquid cosmetic when it is inserted into the liquid cosmetic in the material container, pulled up, and excess cosmetic adhered to the application body 10 and the shaft 20 is squeezed off. In this state, when the liquid cosmetic adhering to the application body 10 is spread on the surface to be applied, the liquid cosmetic adhering to the application body 10 decreases, but the hole 23 of the flexible portion 22 at the time of application is reduced. The liquid cosmetic material filled in the hole 23 is pushed out by the bending of, and is supplied to the application surface 11 through the groove 12. Therefore, according to this cosmetic applicator, the frequency of replenishing the liquid cosmetic from the cosmetic container during application of the liquid cosmetic can be reduced.

  In addition, since the application body 10A and the shaft 20 are integrally formed of resin, they can be easily and inexpensively manufactured.

  When the shaft 20 can be detachably attached to the outer cylinder 40, the shaft 20 can be detached from the outer cylinder 40 and the flexible portion 22 can be cleaned.

  The present invention can take various aspects. For example, in the cosmetic applicator 1B shown in FIGS. 4A, 4B, and 4C, in the cosmetic applicator 1A described above, the narrow diameter portions 26 and 27 having a diameter smaller than that of the shaft body 21 are omitted, and By increasing the opening area, the amount of the cosmetic material stored in the hole 23 is increased, and the width of the groove 12 extending from the hole 23 is widened so that the cosmetic stored in the hole 23 is deformed. Thus, it can be easily extruded onto the coating surface 11. This cosmetic applicator 1B is suitable for application of a liquid cosmetic having a higher viscosity than the above-described cosmetic applicator 1A. In addition, when the small-diameter portion 26 exists, the narrow-diameter portion 26 is twisted, and the effective width of the groove 12 in that portion is narrowed, so that the cosmetic material accumulated in the hole portion 23 flows when it is pushed out to the application body 10 side. Although the road resistance may increase, such an increase in the channel resistance can be prevented by omitting the small diameter portion 26.

  In the cosmetic applicator 1C shown in FIGS. 5A, 5B, and 5C, the opening surface of the hole 23 extends in the axial direction P1 of the shaft main body 21 and the opening area is larger than the above-described cosmetic applicator 1B. The application body 10 side portion of the portion 23 is exposed outside the outer cylinder 40. In particular, in the flexible portion 22 composed of the hole 23 and the peripheral wall 24, by making the maximum width L11 of the flexible portion 22 of the portion not covered by the outer tube 40 larger than the outer diameter L12 of the outer tube 40, The amount of cosmetics stored in the hole 23 is increased.

  On the other hand, in order to make the cosmetics adhere to the application body 10, the cosmetic applicator 1 </ b> C is inserted into the liquid cosmetic material filled in the cosmetic container, pulled up from there, and then the extra cosmetics attached to the application body 10. In order to remove iron, the maximum width L11 of the flexible portion 22 is equal to or less than the maximum width L13 of the application body 10 so that the shaft 20 passes through ironing (FIG. 5B).

  Further, in this cosmetic applicator 1C, the central portion of the thin plate portions 25a and 25b forming the peripheral wall 24 of the hole portion 23 is recessed toward the central portion side of the hole portion 23, whereby a plan view viewed from the application surface 11 side is obtained. The peripheral wall 24 is formed into a gourd shape, and the recess 28 is easily bent so that the hole 23 is deformed so that the applicator 10 swings, and the peripheral wall 24 of the hole 23 A deeper recess 29 is formed in the joint portion, and the application body 10 is also swung by bending of this portion. Therefore, according to the cosmetic applicator 1C, the applicator body 10 is largely swung left and right within a plane substantially parallel to the application surface 11, as indicated by an arrow A in FIG. It becomes easy. Further, the hole 23 is bent from the recesses 28 of the thin plate portions 25 a and 25 b, whereby the liquid cosmetic material accumulated in the hole 23 is led out to the application surface 11 through the groove 12.

  The cosmetic applicator 1D shown in FIGS. 6A and 6B has a shallower dent 29 in the joint portion between the peripheral wall 24 of the hole 23 and the applicator 10 than the cosmetic applicator 1C described above. Accordingly, as shown by an arrow A in FIG. 6B, when the application body 10 swings left and right within a plane substantially parallel to the application surface 11, a dent in the joint portion between the peripheral wall 24 of the hole 23 and the application body 10 is performed. 29 is hardly bent, and the hole 23 is deformed by bending of the recess 28 of the thin plate portions 25a and 25b. Therefore, the cosmetics accumulated in the hole 23 are more easily pushed out than the cosmetic applicator 1C described above. Therefore, this cosmetic applicator 1D is suitable for application of cosmetics having a higher viscosity than the cosmetic applicator 1C.

The cosmetic applicator 1E shown in FIG. 7 is the same as the cosmetic applicator 1B shown in FIG. 4A, FIG. 4B, and FIG. It extends to the part.
In the present invention, how far the groove 12 extends within the coating surface can be determined as appropriate.

  The cosmetic applicator 1F shown in FIGS. 8A and 8B is the cosmetic applicator 1A shown in FIGS. 2A to 2E, in which the application surface 11 of the application body 10 is parallel to the axial direction P1 of the shaft body 21. Thus, even if the application surface 11 of the application body 10 is parallel to the axial direction P1 of the shaft main body 21, the cosmetic material accumulated in the hole 23 can be led out to the application surface 11 through the groove 12.

The cosmetic applicator 1G shown in FIG. 9 is the same as the cosmetic applicator 1A shown in FIGS. 2A to 2E, when the shaft main body 21 is inserted into the outer cylinder 40, The opening surface on the side opposite to the coating surface 11 is closed with the inner wall of the outer cylinder 40.
Thereby, when the flexible part 22 bends, the cosmetic accumulated in the hole 23 flows out from the opening surface of the hole 23 opposite to the application surface 11 and is led out to the application surface 11 side. It can be prevented from disappearing.

  The cosmetic applicator 1H shown in FIG. 10 has a bottomed cylindrical shape in the hole applicator 1A shown in FIG. 2A to FIG. 2E so that the hole 23 opens only on the application surface 11 side. It is a thing. Also in this cosmetic applicator 1H, when the flexible portion 22 bends, the cosmetic accumulated in the hole 23 flows out from the opening of the hole 23 on the side opposite to the application surface 11, and the application surface. It can be prevented from being led out to the 11th side.

  In each of the cosmetic applicators described above, a notch is formed in the peripheral wall 24 surrounding the hole 23 to increase the flexibility of the flexible portion 22, and the ease of movement of the application body 10 in the A direction and the axial direction P1 is improved. In addition, if necessary, a notch may be provided so that the application body 10 swings in the direction of the axis P2 of the hole 23.

  In addition, in this invention, you may form the application body 10, the flexible part 22, and the shaft main body 21 by another part. Thereby, the range of the material selection of the flexible part 22 spreads, for example, the flexibility in the flexible part 22 can be improved by using a foam material, a rubber material, etc.

The outer shape of the outer cylinder 40 is not limited to a cylindrical shape, but may be an elliptical column shape, a polygonal column shape, or the like.
The shape of the opening surface of the hole 23 is not limited to the above-described circular shape or gourd shape, but may be an elliptical shape, a rhombus shape, a triangular shape, a non-linear symmetry shape, or the like. The flexibility of the flexible portion 22 can be changed by changing the shape of the opening surface.

  The shape and material of the application body 10 can be selected as appropriate according to the properties of the cosmetic applied with the cosmetic applicator, such as liquid, powder, cake, etc., and the application site of the cosmetic, such as skin, eyelashes, and nails. it can. For example, when applying liquid cosmetics, it is preferable to use the application body 10 which carried out the flocking process, and you may use a brush-like or brush-like application body.

  As shown in FIG. 11, the cosmetic applicator of the present invention has a bottomed cylindrical container body 50 filled with a liquid cosmetic 51, a cap 52 that closes the container body 50, and the mouth of the container body 50. It is also useful as the cosmetic applicator 1 incorporated in the cosmetic 60 having the iron 53 in the vicinity.

  In the cosmetic 60, the outer cylinder 40 of the cosmetic applicator 1 is attached to a cap 52. Or you may shape | mold the outer cylinder 40 and the cap 52 integrally. Thus, this invention also includes the cosmetics with which the cosmetic applicator 1 of the present invention is provided in a cosmetic container filled with cosmetics.

1, 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H Cosmetic applicator 10 Application body 11 Application surface 12 Groove 13 Application body tip 20 Axis 21 Axis body 22 Flexible part 23 Hole 24 Peripheral wall 25a 25b Thin plate portion 26 Small diameter portion 27 Small diameter portion 28 Depression 29 Depression 40 Outer cylinder 50 Container body 51 Cosmetic material 52 Cap 53 Ironing 60 Cosmetic L1 Thin plate portion thickness L2 Shaft body diameter L3 Hole width L4, L5 Small diameter Width L6 Thin plate width L7, L8 Small axial thickness L10 Groove width L11 Flexible width L11 Flexible outer diameter L12 Outer cylinder outer diameter L13 Maximum applied body width P1 Shaft body axis Direction P2 Hole axis

Claims (7)

An applicator for applying cosmetics, a shaft having an applied body at one end, and a cosmetic applicator having an outer cylinder into which the shaft is inserted,
The shaft has a shaft body and a flexible part provided on the application body side of the shaft body,
The flexible portion has a hole , the hole extends from the application surface side of the shaft to the opposite side, has an opening surface at least on the application surface side, and has a pair of thin plate portions on the peripheral wall of the hole,
When the pair of thin plate portions bend asymmetrically, the application body swings, and simultaneously, the application body moves up and down in the axial direction .
A cosmetic applicator that is provided with a groove extending from an opening surface on the application surface side of the hole portion of the flexible portion on the application surface of the application body , and the groove serves as a flow path of the cosmetic material filled in the hole portion .   The cosmetic applicator according to claim 1, wherein a groove extends to the tip of the applicator.   The cosmetic applicator according to claim 1 or 2, wherein the hole of the flexible portion is a through hole. The angle formed by the application surface of the application body and the axial direction of the shaft body in a cross section that bisects the width direction of the application surface perpendicular to the application surface is 5 ° or more and 45 ° or less. Cosmetic applicator described in 1.   The cosmetic applicator according to any one of claims 1 to 4, wherein the outer cylinder covers at least a part of the flexible portion.   The cosmetic applicator according to any one of claims 1 to 5, wherein a maximum width of a portion of the flexible portion that is not covered by the outer cylinder is larger than an outer diameter of the outer cylinder and equal to or less than a maximum width of the application body.   The cosmetic applicator according to any one of claims 1 to 5, wherein the outer cylinder covers the flexible part so that the flexible part is not exposed from the outer cylinder.

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