Cosmetic holder, rod-shaped cosmetic container equipped therewith, and cosmetics equipped therewith

Abstract

To provide a cosmetic holder that improves the holding power of stick-shaped cosmetic products. [Solution] A cosmetic holder for holding a rod-shaped cosmetic product inside a cosmetic container, comprising: a cylindrical peripheral wall in which the rod-shaped cosmetic product is placed and one end of the rod-shaped cosmetic product can protrude; a first projection provided on the inner circumferential surface side of the peripheral wall and extending in a direction along the circumferential direction of the peripheral wall; and a second projection provided on the inner circumferential surface side of the peripheral wall and extending in a direction different from the circumferential direction, wherein a plurality of the first projections are provided along the circumferential direction of the inner circumferential surface, and a plurality of the second projections are provided along the circumferential direction of the inner circumferential surface and are provided on the one end side of the rod-shaped cosmetic product in the axial direction of the rod-shaped cosmetic product from the first projections.

Description

Technical Field

[0001] The present invention relates to a holder for a rod-shaped cosmetic that is formed so as to be able to be raised / lowered freely within a cosmetic container.

Background Art

[0002] In recent years, in the market, there has been a demand for rod-shaped cosmetics such as lipsticks that have a soft texture and a high gloss. In order to embody such required quality, it is generally performed to invert a cosmetic container and directly fill the inside of the container with a molten cosmetic through a filling hole at the bottom thereof, and then cool and solidify it to mold the rod-shaped cosmetic.

[0003] In order to hold and fix a cosmetic molded by such a backfilling method, Patent Document 1 discloses a holder that provides one or more protruding portions such as claw portions or ribs on the inner peripheral wall of the cosmetic holder, fills and solidifies the molten cosmetic, and engages and holds the cosmetic with such protruding portions. Further, Patent Document 2 discloses a holder that enhances the holding property of a cosmetic by continuously projecting ribs in a wave shape over the entire inner peripheral wall surface of a tray. Furthermore, Patent Document 3 discloses a holder that provides a taper on the inner peripheral surface of the holder and annularly provides at least one stepped portion, and receives the stress applied to the cosmetic by these tapered surfaces and stepped surfaces.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Disclosure of the Invention

Problems to be Solved by the Invention

[0005] Incidentally, with this type of relatively soft cosmetic, the mechanical strength of the cosmetic itself is low. Therefore, due to shrinkage of the cosmetic during cooling and solidification, and external impacts such as dropping, stress concentrates on the protrusions that hold the cosmetic in place, and there is a risk that the cosmetic around the protrusions may be damaged.

[0006] Therefore, the present invention aims to provide a cosmetic holder that securely holds the cosmetic while suppressing damage to the rod-shaped cosmetic. [Means for solving the problem]

[0007] The present invention solves the above problems and provides a cosmetic holder for holding a rod-shaped cosmetic product in a cosmetic container, comprising: a cylindrical peripheral wall in which the rod-shaped cosmetic product is placed and one end of the rod-shaped cosmetic product can protrude; a first projection provided on the inner circumferential surface side of the peripheral wall and extending in one direction along the circumferential direction of the peripheral wall; and a second projection provided on the inner circumferential surface side of the peripheral wall and extending in a direction different from the circumferential direction, wherein a plurality of the first projections are provided along the circumferential direction of the inner circumferential surface, and a plurality of the second projections are provided along the circumferential direction of the inner circumferential surface and are provided on the one end side of the rod-shaped cosmetic product in the axial direction of the rod-shaped cosmetic product from the first projections.

[0008] Furthermore, it is preferable that the plurality of first protrusions are arranged along the peripheral wall so that their relative positions are aligned on substantially the same line along the circumferential direction of the inner peripheral surface. Furthermore, the second projection is preferably provided so as to extend in a spiral direction along the inner surface of the peripheral wall. Furthermore, it is preferable that the first protrusion be provided in a continuous manner with the second protrusion. Furthermore, it is preferable that the second protrusion is formed so as not to overlap with an adjacent second protrusion on the inner surface in the circumferential direction. Furthermore, it is preferable that the side surface of the first protrusion facing the peripheral wall is formed to be aligned with the side surface of the adjacent second protrusion. Furthermore, the first and second protrusions are preferably formed in a continuous annular shape along the circumferential direction of the peripheral wall in a plan view. Furthermore, the first projection is preferably formed such that it has a tip at one end in the extension direction and a base at the other end, and in a plan view, the width narrows from the base to the tip. Furthermore, the first projection is preferably formed such that it is continuous with each other at the tip and continuous with both ends of the base, and the angle formed by the two side portions at the tip is acute. Furthermore, it is preferable that the first protrusion is formed such that a part or all of the side surface facing the peripheral wall is spaced apart from the inner surface of the peripheral wall. Furthermore, the first protrusion is preferably formed such that the distance between the side surface facing the peripheral wall and the inner surface of the peripheral wall increases from the base end to the tip end. Furthermore, the first protrusion is preferably formed such that the angle of the inward corner formed by the side surface facing the peripheral wall and the inner surface of the peripheral wall is acute. Furthermore, it is preferable that the second protrusion is formed by extending it at different inclination angles from adjacent second protrusions. Furthermore, it is preferable that the plurality of second protrusions, each extending at two different inclination angles, be alternately provided along the circumferential direction of the peripheral wall. Furthermore, the second projection is provided with a tip at one end in the extension direction and a base at the other end, and it is preferable that the tip is formed at a different position in the axial direction of the rod-shaped cosmetic product from the tip of an adjacent second projection. Furthermore, the tip of the second projection is preferably at approximately the same height as the lowest part of the upper end of the peripheral wall, and also lower than the aforementioned height.

[0009] The present invention also relates to a cosmetic holder for holding a rod-shaped cosmetic product in a cosmetic container, comprising a cylindrical peripheral wall in which the rod-shaped cosmetic product is placed and the tip of the rod-shaped cosmetic product can protrude, and a plurality of protrusions provided at predetermined intervals on the inner surface of the peripheral wall, wherein the protrusions include a first protrusion extending in a first direction which is along the inner surface of the peripheral wall, and a second protrusion extending from one end of the first protrusion in a second direction different from the first direction along the inner surface of the peripheral wall. It is a cosmetic product holder.

[0010] Furthermore, the first projection may extend in a direction perpendicular to the axial direction of the rod-shaped cosmetic, and the second projection may extend from one end of the first projection toward the tip of the rod-shaped cosmetic.

[0011] Furthermore, the present invention relates to a rod-shaped cosmetic container equipped with the aforementioned cosmetic holder.

[0012] Furthermore, the present invention comprises a rod-shaped cosmetic container equipped with the cosmetic holder described above, and a rod-shaped cosmetic contained in the rod-shaped cosmetic container, wherein the rod-shaped cosmetic is filled within the cosmetic holder to a predetermined length from the first protrusion in the axial direction opposite to the side on which the second protrusion is provided. [Effects of the Invention]

[0013] According to the present invention, it is possible to reliably hold the cosmetic product while suppressing damage to the stick-shaped cosmetic product. [Brief explanation of the drawing]

[0014] [Figure 1] This is a longitudinal cross-sectional view of a cosmetic product comprising a rod-shaped cosmetic container equipped with a cosmetic holder according to this embodiment, and a rod-shaped cosmetic product contained in the rod-shaped cosmetic container. [Figure 2] This is a perspective view of the cosmetic holder of this embodiment. [Figure 3](a) Cross-sectional view of the cosmetic container of this embodiment. (b) Cross-sectional view of the cosmetic container of this embodiment. (c) Schematic view showing a partial enlarged cross-section of the circumferential wall of the cosmetic container of this embodiment with a notch formed on the circumferential wall to provide a protruding portion. [Figure 4] Perspective view of the protruding portion of the cosmetic container of this embodiment. [Figure 5] Partially enlarged plan view of the protruding portion of the cosmetic container of this embodiment and a protruding portion adjacent thereto. [Figure 6] Enlarged plan view of the protruding portion of the cosmetic container of this embodiment. [Figure 7] Schematic view showing the protruding portion with the circumferential wall of the cosmetic container of this embodiment in a developed state. [Figure 8] Schematic view showing the stress applied to the cosmetic by the protruding portion of the cosmetic container of this embodiment. [Figure 9] Cross-sectional view showing the state during filling of the cosmetic in the cosmetic container of this embodiment. [Figure 10] (a) Schematic view showing Modification 1 of the protruding portion of the cosmetic container of this embodiment, (b) Schematic view showing Modification 2 of the protruding portion of the cosmetic container of this embodiment, (c) Schematic view showing Modification 3 of the protruding portion of the cosmetic container of this embodiment, (d) Schematic view showing Modification 4 of the protruding portion of the cosmetic container of this embodiment, (e) Schematic view showing Modification 5 of the protruding portion of the cosmetic container of this embodiment. [Figure 11] (a) Schematic view showing the filling amount of the cosmetic in the cosmetic container of this embodiment, (b) Schematic view showing the filling amount of the cosmetic in Modification 6 of the protruding portion of the cosmetic container. [Figure 12] Schematic view showing Modification 7 of the cosmetic container of this embodiment.

Mode for Carrying Out the Invention

[0015] Hereinafter, embodiments of the cosmetic container of the present invention will be specifically described based on the drawings. Note that the present invention is not limited to these embodiments.

[0016] <Overall structure of the rod-shaped cosmetic container 1> Figure 1 is a longitudinal cross-sectional view of a cosmetic product 200 comprising a rod-shaped cosmetic container 1 equipped with a cosmetic holder 10 of the present invention and a cosmetic product C contained in the rod-shaped cosmetic container 1. First, the overall configuration of the rod-shaped cosmetic container 1 in this embodiment will be described with reference to Figure 1. In the following description, the axial direction of the rod-shaped cosmetic product held in the cosmetic holder 10 may be simply referred to as the axial direction. Also, the circumferential direction of the peripheral wall 110 of the cosmetic holder 10 may be simply referred to as the circumferential direction. Furthermore, the radial direction of the peripheral wall 110 of the cosmetic holder 10 may be simply referred to as the radial direction.

[0017] The rod-shaped cosmetic container 1 of this embodiment comprises an outer cylinder 2, a spiral cylinder 3 provided inside the outer cylinder 2, a sleeve 4 provided inside the spiral cylinder 3 and rotatable relative to the outer cylinder 2 and the spiral cylinder 3, and a cosmetic holder 10 provided inside the sleeve 4 that can be raised or lowered. The rod-shaped cosmetic container 1 also has a lid that can be attached to the top of the outer cylinder 2 to house the sleeve 4, but this is omitted in Figure 1.

[0018] The mechanism for raising and lowering the cosmetic holder 10 is not particularly limited and known mechanisms can be used. For example, in the embodiment shown in Figure 1, a projection 14 is provided on the outer circumferential surface 111 of the peripheral wall 110 of the cosmetic holder 10. In addition, a guide groove 41 extending in the axial direction is provided on the side surface of the sleeve 4. Furthermore, a helical groove 31 is provided on the inner circumferential surface of the helical cylinder 3. The projection 14 is housed in the helical groove 31 of the helical cylinder 3 via the guide groove 41 of the sleeve 4. With this configuration, when the outer cylinder 2 is rotated circumferentially relative to the sleeve 4, the projection 14 moves within the helical groove 31 and moves up and down along the guide groove 41. In this way, the cosmetic holder 10 can be raised or lowered within the sleeve 4. Note that the state in Figure 1 shows the cosmetic holder 10 in its most raised state within the sleeve 4.

[0019] Figure 2 is a perspective view of the cosmetic holder 10 of this embodiment, Figure 3(a) is a longitudinal cross-sectional view of the cosmetic holder 10, Figure 3(b) is a cross-sectional view, and Figure 3(c) shows the inner circumferential surface 112 side of the cosmetic holder 10 near the protruding portion 50, with a part of the peripheral wall 110 cut out. The cosmetic holder 10 and the configuration of each part will be described below with reference to Figures 2, 3(a), (b), and (c).

[0020] <Cosmetic product holder 10> As shown in Figure 2, the cosmetic holder 10 of this embodiment is a substantially cylindrical member. Specifically, it comprises a cylindrical peripheral wall 110 having an opening 101 through which one end of a rod-shaped cosmetic held by the cosmetic holder 10 protrudes, and an opening 102 provided on the opposite side of the opening 101. A pair of protrusions 14 are provided on the outer peripheral surface 111 of the peripheral wall 110 on the side facing the opening 102, each protruding in opposite directions. Furthermore, in this embodiment, the upper edge 113 of the peripheral wall 110 is formed at an angle such that the axial length of one side of the peripheral wall 110 is shorter than that of the opposite side at the opening 101. In this specification, the upper side means the side facing the opening 101, and the lower side means the side facing the opening 102.

[0021] In this embodiment, the cosmetic holder 10 has multiple recesses 114 formed in the peripheral wall 110 that are recessed downward from the upper edge 113. By forming multiple recesses 114 in this way, the contact length with the outer surface of the cosmetic is increased. As a result, the stress on the cosmetic that is applied to the contact portion with the upper edge 113 during shrinkage when cooling and solidifying, and during use, can be distributed, preventing defects such as breakage and cracking of the cosmetic. Note that the recesses 114 will not be shown in the following drawings.

[0022] <Protrusion 50> As shown in Figures 3(a) to (c), a projection 50 is provided on the inner circumferential surface 112 side of the peripheral wall 110, projecting inward toward the cosmetic holder 10. The projection 50 in this embodiment extends along the inner circumferential surface 112 of the peripheral wall 110 for a predetermined length. This projection 50 has a bent portion 503. More specifically, the projection 50 is formed to bend during its extension, and extends in two different directions with the bent portion 503 as the boundary. Furthermore, the protruding portion 50 in this embodiment is formed in a tapered shape, with its radial width narrowing as it approaches both ends in the circumferential direction.

[0023] Multiple protrusions 50 are arranged in a row along the circumferential direction of the inner circumferential surface 112. In this embodiment, a total of six protrusions are provided along the circumferential direction of the inner circumferential surface 112, spaced apart from each other. In order to ensure sufficient holding power for the cosmetic product, it is preferable to provide two or more protrusions 50, and more preferably two to nine. Furthermore, the protrusion 50 in this embodiment is positioned near the center in the axial direction of the peripheral wall 110.

[0024] The projection 50 of this embodiment includes a first projection 501 extending in one direction along the circumferential direction of the peripheral wall 110, and a second projection 502 extending from the end of the first projection 501 in a direction different from that of the first projection 501. Since the first projection 501 and the second projection 502 extend in different directions, a bent portion 503 is formed at the point where they are connected.

[0025] In this embodiment, the first protrusion 501 extends along the circumferential direction of the peripheral wall 110. The multiple first protrusions 501 are arranged along the inner circumferential surface 112 of the peripheral wall 110 such that their relative positions lie on the same line L1 along the circumferential direction. Here, "circumferential direction" means extending along the inner circumferential surface 112 at an angle perpendicular to the axis of the rod-shaped cosmetic. By forming the first protrusions 501 to extend along the circumferential direction in this way, an axial holding force on the cosmetic is ensured. Furthermore, by arranging the multiple first protrusions 501 so that their relative positions lie on approximately the same line along the circumferential direction, the axial holding force on the cosmetic is improved. Here, "approximately the same line" is not limited to being provided at a position that strictly coincides with a hypothetical line L extending along the circumferential direction, but allows for a predetermined range of axial displacement. Specifically, an axial displacement of up to 1 mm between the multiple first protrusions 501 is permitted.

[0026] In this embodiment, the second projection 502 extends along the inner circumferential surface 112 of the peripheral wall 110 in a direction different from that of the first projection 501. Specifically, the second projection 502 extends in a spiral direction, inclined at a predetermined angle with respect to the first projection 501, which extends in the circumferential direction. All of the multiple second projections 502 in this embodiment are inclined in the same direction. Furthermore, the second protrusion 502 is located closer to the opening 101 than the first protrusion 501. "Located closer to the opening 101" means that, in terms of the relative positional relationship in the axial direction of the rod-shaped cosmetic, the second protrusion 502 is located closer to the opening 101 than the first protrusion 501. In this case, like the bent portion 503 of the protrusion 50, a portion of the second protrusion 502 and a portion of the first protrusion 501 may be in the same relative position.

[0027] Figure 4 is a perspective view of the projection 50 of this embodiment. Based on Figure 4, the parts of the projection 50 of this embodiment will be described as follows: The first projection 501 of this embodiment comprises a top surface 511, a bottom surface 512, a side surface 513, a side surface 514, a tip 515, and a base end 516. The second projection 502 of this embodiment comprises a top surface 521, a bottom surface 522, a side surface 523, a joint 524, a tip 525, and a base end 526. The first projection 501 and the second projection 502 are connected to each other at their respective base ends 516 and 526. The top surface 511 of the first projection 501 is formed as a flat surface extending in a direction perpendicular to the axial direction. The top surface 521 of the second projection 502 is formed as an inclined surface.

[0028] Figure 5 is a partially enlarged plan view of the protrusion 50 of this embodiment. Here, with reference to Figure 5, the positional relationship between adjacent protrusions 50 will be explained in detail. As shown in Figure 5, the protrusions 50 of this embodiment are arranged so that adjacent protrusions 50 do not overlap with each other in a plan view. Specifically, the first protrusion 501a of a particular protrusion 50a and the second protrusion 502b of the adjacent protrusion 50b are formed so that they do not overlap with each other in a plan view. As a result, the first protrusion 501a, which is located further back (lower in the axial direction) than the second protrusion 502b in a plan view, is not overlapped below the second protrusion 502b. On the other hand, the protrusions 50 are arranged such that gaps between adjacent protrusions 50 are suppressed in a plan view. Specifically, the gap between the tip 525b of a particular second protrusion 502b and the base end 526a of the adjacent second protrusion 502a is suppressed, and they are arranged to be continuous in the circumferential direction.

[0029] To explain further, the first protrusion 501a of a particular protrusion 50a is formed such that, in a plan view, the gap between its side surface 514a on the peripheral wall 110 side and the side surface 523b of the adjacent second protrusion 502b of the protrusion 50b is suppressed. Specifically, the side surface 514a of the first protrusion 501a is formed to conform to the shape of the side surface 523b of the adjacent second protrusion 502b. Although there appears to be no gap between the side surface 514a of the first projection 501a and the side surface 523b of the second projection 502b in a plan view, these side surfaces 514a and 523b are formed at different positions in the axial direction, and therefore do not actually touch each other.

[0030] As described above, the protrusions 50 in this embodiment are provided so as not to overlap with adjacent protrusions 50 in a plan view, thereby facilitating the axial die-cutting process in the manufacturing process of the cosmetic holder 10. Furthermore, the protrusions 50 in this embodiment are provided so as to suppress the gap between adjacent protrusions 50 in a plan view. This improves the holding force against the direction in which the rod-shaped cosmetic is removed, or in the opposite direction in which it is pushed in.

[0031] <First protrusion 501> Figure 6 is an enlarged plan view of the protrusion 50. Referring to this figure, the configurations of the first protrusion 501 and the second protrusion 502 will be explained in more detail. Note that Figure 6 only shows a specific protrusion 50, and the adjacent protrusions 50 are omitted.

[0032] In this embodiment, the first projection 501 is formed to protrude from the base end 526 of the second projection 502. In a plan view, it is formed in a roughly triangular wedge shape, with its width W1 gradually narrowing from the base end 516 connected to the second projection 502 to the tip end 515. Here, the "width" of the first projection 501 refers to the distance between the two side portions 513 and 514 provided from both ends of the base end 516 to the tip end 515.

[0033] The first projection 501 is preferably formed such that the angle θ1 on the tip portion 515 side, formed by the two side portions 513 and 514, is acute, and more preferably in the range of 15 to 45 degrees. In addition, the tip portion 515 in this embodiment is formed with rounded corners to create an R-shaped surface.

[0034] In this embodiment, the first projection 501 has a side surface 514 facing the inner circumferential surface 112 of the peripheral wall 110, which is formed spaced apart from the inner circumferential surface 112. Furthermore, the width W2 between the side surface 514 and the inner circumferential surface 112 gradually widens from the base end 516 to the tip end 515 of the first projection 501. More specifically, the width W2 is widest at the tip end 515. In other words, the first projection 501 in this embodiment is connected to the second projection 502 at the base end 516, but is provided spaced apart from the peripheral wall 110. For this reason, the tip end 515 side of the first projection 501 is a free end. With this configuration, the first projection 501 can be displaced to a certain extent in response to external stress, and can absorb impacts when the cosmetic is subjected to impact.

[0035] Furthermore, if the radial distance between the side portion 513 opposite to the side portion 514 and the inner circumferential surface 112 of the peripheral wall 110 is defined as the protrusion height H1 of the first protrusion 501, then the protrusion height H1 is formed to be substantially constant from the base end portion 516 to the tip end portion 515. In addition, the angle θ2 of the inward corner formed by the side portion 514 and the inner circumferential surface 112 of the peripheral wall 110 is formed to be acute. It is preferable that the angle θ2 of the inward corner is formed in the range of 15 to 45 degrees. Furthermore, the angle θ2 of the inward corner is formed such that θ2 ≥ θ3 in relation to the angle θ3 of the tip end portion 525 of the second protrusion 502 (the angle formed between the side portion 523 and the inner circumferential surface 112 of the peripheral wall 110). This makes it possible to avoid overlap in a plan view between a specific second protrusion 502 and the adjacent first protrusion 501.

[0036] Thus, the first projection 501 is formed such that its side portion 514 is spaced apart from the inner circumferential surface 112, and the tip portion 515 of the first projection 501 is acutely angled, so that the tip portion 515 of the first projection 501 is embedded in the cosmetic material. Furthermore, the spaced distance between the side portion 514 of the first projection 501 and the inner circumferential surface 112, and the acute angle at which the corner between the side portion 514 of the first projection 501 and the inner circumferential surface 112 meets the cosmetic material, increases the contact area between the first projection 501 and the inner circumferential surface 112, improving the retention force of the cosmetic material. In addition, the fact that the side portion 514 is formed to be spaced apart from the inner circumferential surface 112 avoids overlap in plan view with a part of the second projection 502 located above it, making it easier to remove the projection from the mold during injection molding.

[0037] Furthermore, the top surface 511 and bottom surface 512 of the first protrusion 501 in this embodiment are formed to be flat surfaces at an angle perpendicular to the axial direction (see Figure 4). The first protrusion 501 having such flat surfaces can withstand forces acting in the axial direction, that is, stresses in the direction of pushing in and pulling out of the rod-shaped cosmetic material. On the other hand, depending on the size and shape of the first protrusion 501, there is a risk that the cosmetic material may break or be damaged from this part. For example, stress may concentrate during cooling shrinkage when filling the cosmetic material, or when the cosmetic material is subjected to a strong impact from the outside, such as by dropping it, and breakage or cracking may occur starting from the first protrusion 501. However, even if breakage or cracking occurs in the cosmetic material at the first protrusion 501, the cosmetic material above the first protrusion 501 is held in place by the second protrusion 502. Therefore, with the cosmetic holder 10 of this embodiment, the size and shape of the first protrusion 501 can be determined without considering the risk of the cosmetic breaking at the first protrusion 501.

[0038] To explain further, the tip portion 515 of the first protrusion 501, which is spaced apart from the peripheral wall 110, is embedded in the cosmetic material, making it more prone to breaking of the cosmetic material compared to other parts. This characteristic can be used to control the position where the cosmetic material is most likely to break. Specifically, by positioning the first protrusion 501 closer to the opening 102 (lower) than the second protrusion 502, the probability of the cosmetic material breaking below the second protrusion 502 increases. Therefore, even if the cosmetic material does break, the portion of the cosmetic material above the broken part, closer to the opening 101 (upper), is properly held in place by the second protrusion 502.

[0039] <Second protrusion 502> In this embodiment, the second projection 502 is joined to the peripheral wall 110 of the cosmetic holder 10 at a joint 524, and is formed to protrude inward from the peripheral wall 110 at the joint 524. In a plan view, its width W2 gradually narrows from the base end 526 connected to the first projection 501 to the tip end 525. Here, the "width" of the second projection 502 refers to the distance between the side portion 523 and the joint 524, which are provided from the base end 526 to the tip end 525.

[0040] In the second projection 502, if the radial distance between the side surface 523 on the opposite side of the joint 524 and the inner surface 112 of the peripheral wall 110 is defined as the projection height H2 of the second projection 502, then at the base end 526, the projection height H2 is the same as the projection height H1 of the first projection 501. Furthermore, the projection height H2 is formed to gradually decrease from the base end 526 to the tip end 525. Moreover, the projection height H2 is formed to be almost zero at the tip end 525.

[0041] In this embodiment, the second projection 502 is formed to extend diagonally upward along the circumferential wall 110 from the base end 526 to the tip end 525. That is, the top surface 521 of the second projection 502 forms an inclined surface. By forming the second projection 502 to extend diagonally with respect to the circumferential direction in this way, the length in the extension direction is ensured. As a result, the contact area between the second projection 502 and the cosmetic material increases, improving the holding force on the cosmetic material. Furthermore, the stress on the cosmetic material is distributed in the axial direction, making it less likely for the cosmetic material to be damaged or fractured at the second projection 502 portion. In addition, the diagonal formation of the second projection 502 acts as a draft angle in injection molding, making it easier to release from the mold.

[0042] Figure 7 shows the projection 50 in the unfolded state of the peripheral wall 110 of this embodiment. As shown in Figure 7, the second projection 502 of this embodiment consists of second projections 502a and 502b, which have different inclination angles with respect to the circumferential direction, and are alternately arranged along the circumferential direction of the peripheral wall 110. In this embodiment, the relationship between the inclination angle θ4 of the second projection 502a and the inclination angle θ5 of the second projection 502b is such that θ4 < θ5. By changing the inclination angles of adjacent second projections 502a and 502b in this way, the distance between the second projections 502a and 502b gradually narrows or widens in the axial direction. This prevents the rod-shaped cosmetic from rotating and coming out along the inclination angle of the second projection 502.

[0043] Furthermore, in this embodiment, the second protrusion 502 is formed such that the height H3 of the second protrusion 502a and the height H4 of the second protrusion 502b are different from each other. Here, the "height" of the second protrusion 502 refers to the axial length from the first protrusion 501 to the upper end 527 of the tip 525 of the second protrusion 502. In this embodiment, the height H3 of the second protrusion 502a is formed to be lower than the height H4 of the second protrusion 502b. By changing the heights of the adjacent second protrusions 502a and second protrusions 502b in this way, the stress applied near the tip 525 of the second protrusion 502 when an external impact is applied can be distributed axially, preventing the stress from concentrating in a part of the axial direction of the rod-shaped cosmetic.

[0044] The inclination angles θ4 and θ5 of these second protrusions 502 are preferably in the range of 15 to 70 degrees, and more preferably in the range of 20 to 60 degrees. If the inclination angle is 15 degrees or less, it may not be possible to secure the length of the second protrusions 502 necessary to exert a holding force on the cosmetic product. Also, if the inclination angle is 60 degrees or more, the resistance against the direction in which the cosmetic product is released will weaken, and the holding force may decrease.

[0045] Furthermore, while there are no particular restrictions on the length of the second protrusion 502 in the extension direction, it is preferable that the second protrusion 502a be formed within a range where it does not overlap with the adjacent second protrusion 502b in the circumferential direction, and is preferably formed within a range of 3 to 10 mm. By forming the length of the second protrusion 502 in the extension direction within a range of 3 to 10 mm in this way, the contact area with the cosmetic product is increased, and holding power can be ensured.

[0046] Furthermore, while there are no particular limitations on the relationship between the length of the second protrusion 502 in the extending direction and the length of the first protrusion 501 in the extending direction, it is preferable that the length of the second protrusion 502 in the extending direction ≥ the length of the first protrusion 501 in the extending direction, and it is preferable that the ratio of the lengths of the two in the extending direction is in the range of first protrusion 501:second protrusion 502 = 1:1 to 1:8.

[0047] Figure 8 shows the stress on the protrusion 50 when the rod-shaped cosmetic is held by the cosmetic holder 10 of this embodiment, indicated by the direction of the arrows. As shown in the figure, the stress in the direction of pushing the rod-shaped cosmetic is applied to the top surface 511 of the first protrusion 501 and the top surface 521 of the second protrusion 502. At this time, since the top surface 521 of the second protrusion 502 is an inclined surface, the stress received from the cosmetic tries to escape diagonally downward along the top surface 521, but since the top surface 511 of the first protrusion 501 is a flat surface, it can receive stress that tries to escape from the second protrusion 502 side. As a result, even if stress is applied to the rod-shaped cosmetic in the direction of pushing it into the cosmetic holder 10, the rod-shaped cosmetic is held in a predetermined position. Furthermore, the stress in the direction that pulls the rod-shaped cosmetic out is applied to the bottom surface 512 of the first protrusion 501 and the bottom surface 522 of the second protrusion 502. As a result, even if stress is applied to the rod-shaped cosmetic in the direction that pulls it out of the cosmetic holder 10, the rod-shaped cosmetic is held in a predetermined position.

[0048] In this embodiment, known methods can be used to fill the cosmetic in the cosmetic holder 10. Specifically, so-called back filling can be used, in which molten cosmetic heated to a certain temperature is filled through an opening provided at the bottom of the cosmetic container. More specifically, methods such as direct filling into the container, using ogive capsules, or using a filling mold can be used.

[0049] Figure 9 is a cross-sectional view showing the cosmetic holder of this embodiment during the filling of the cosmetic. Referring to Figure 9, the method of filling the cosmetic holder 10 of this embodiment will be described. In the figure, downward arrows represent the flow of cosmetic C discharged from the filling nozzle. Upward arrows in the cosmetic C represent the rise in the liquid level C1 of the cosmetic C. As shown in the figure, when filling the cosmetic, the cosmetic holder 10 is inverted so that the upper opening 101 is on the bottom, and the filling nozzle 7 is inserted through the bottom opening 102. At the start of filling, the tip 71 of the filling nozzle 7 is lowered to a position close to the bottom of the filling space by passing through the central space surrounded by the protrusion 50. When filling starts, the nozzle rises, and consequently, the liquid level C1 of the molten cosmetic C also rises.

[0050] Then, when the liquid level C1 of the cosmetic reaches the position of the protrusion 50, a flow path is created between the protrusion 50 and the adjacent protrusion 50 near the peripheral wall 110, and the cosmetic C flows into it. This reduces turbulence in the flow of the cosmetic caused by the protrusion 50 and suppresses the formation of air pockets around the protrusion 50. As a result, a decrease in the holding force for the rod-shaped cosmetic and molding defects can be prevented.

[0051] <Example 1> Figure 10(a) shows Modification 1 of the protrusion 50 of the cosmetic holder 10 of the present invention. In Modification 1, the protrusion 50 is formed such that the axial positions of the upper end portions 527 of the second protrusions 502 are all aligned to the same position. Furthermore, as in this modification, the second protrusions 502 may be formed so that the inclination angle is all the same. This makes it possible to suppress flow disturbance when filling with cosmetic.

[0052] <Modification 2> Figure 10(b) shows a modified example 2 of the protrusion 50 of the cosmetic holder 10 of the present invention. In modified example 2, the protrusion 50 is formed such that the axial position of the upper end 527 of the second protrusion 502 is sequentially higher or lower than the position of the upper end 527 of the adjacent second protrusion 502. In this modified example, the protrusions are sequentially higher from left to right in the figure, but they may also be formed in the opposite direction, sequentially lower from left to right. This allows the stress concentrated on the upper end 527 portion of the second protrusion 502 to be distributed in the axial direction. In this modified example, the axial position of the upper end 527 is sequentially higher or lower, but it is not necessary to form them sequentially higher or lower in this way, and multiple second protrusions 502 with different axial positions of their upper end 527s may be arranged irregularly.

[0053] <Variation 3> Figure 10(c) shows a modified example 3 of the protrusion 50 of the cosmetic holder 10 of the present invention. In modified example 3, the protrusion 50 is formed such that the second protrusion 502 is inclined toward the opposite side from the adjacent second protrusion 502. This improves the cosmetic holding force in the direction in which the distance between the second protrusions 502 narrows. In this modified example, the axial height of all the second protrusions 502 is the same, but this height may be changed.

[0054] <Modification 4> Figure 10(d) shows a modified example 4 of the protrusion 50 of the cosmetic holder 10 of the present invention. In modified example 4, the first protrusion 501 and the second protrusion 502 are not connected to each other, but are formed individually so as to be spaced apart in the axial direction. This makes it possible to suppress the generation of air pockets that occurred near the bent portion 503 of the first protrusion 501 and the second protrusion 502.

[0055] <Modification 5> Figure 10(e) shows a modified example 5 of the protrusion 50 of the cosmetic holder 10 of the present invention. In modified example 5, the side portion 514 of the first protrusion 501 is joined to the inner circumferential surface 112 of the peripheral wall 110 without separation, and the area near the tip 525 of the adjacent second protrusion 502 is formed to overlap with a part of the first protrusion 501 in the circumferential direction in a plan view. This improves the holding force on the cosmetic in the axial direction.

[0056] <Variation 6> Figure 11(a) shows the amount of cosmetic filling in the cosmetic holder 10 of the present invention, and Figure 11(b) shows the amount of cosmetic filling in a modified example 6 of the protrusion 50. The amount of cosmetic filling in the cosmetic holder 10 of this embodiment depends on the position of the protrusion 50. Specifically, the closer the protrusion 50 is to the opening 101 in the axial direction, the less cosmetic filling can be added.

[0057] When filling the cosmetic holder 10 of this embodiment with cosmetic C, the bottom surface C2 of the cosmetic C is located a predetermined distance X minutes below the axial position P2 of the first protrusion 501. This ensures that the cosmetic is held in place. Furthermore, as shown in Figure 11(a), if the protrusion 50 is located approximately in the axial center of the peripheral wall 110, the cosmetic C must fill at least the distance Y minutes from the lowest end 115 position P1 on the upper edge 113 of the peripheral wall 110 to the bottom surface C2 of the cosmetic C.

[0058] On the other hand, the protrusion 50 of the modified example 6 shown in Figure (b) is provided near the opening 101 at the top of the cosmetic holder 10. Specifically, the upper end 527 of the tip 525 of the second protrusion 502 is at approximately the same height as the lowest end 115 position P1 of the upper edge 113 of the peripheral wall 110, and is also lower than this position P1. In this case, the amount of cosmetic C to be filled is only the amount of distance Z from the lowest end 115 position P1 of the upper edge 113 of the peripheral wall 110 to the bottom surface C2 of the cosmetic C. In this way, by shortening the distance between the protruding portion 50 and the upper opening 101 in Modification 6, the amount of cosmetic to be filled into the cosmetic holder 10 can be reduced. The reason why the protruding portion 50 in this embodiment can be provided near the upper end of the peripheral wall 110 is that the protruding portion 50 can secure a holding force for the cosmetic without relying on the holding force due to contact between the cosmetic and the peripheral wall 110 of the cosmetic holder 10.

[0059] Furthermore, as shown in Figure 2, when multiple recesses 114 are formed that indent downward from the upper edge 113 of the peripheral wall 110, the position of the upper end 527 of the tip 525 of the second projection 502 will be at approximately the same height as the position of the lowest end of the recess 114. Thus, by using the protruding portion 50 of the modified example 6 in the cosmetic holder 10 equipped with the recess 114, the stress on the cosmetic applied to the contact portion with the upper edge 113 during use is distributed, and the cosmetic can be held stably even with a small amount of cosmetic filling.

[0060] <Example 7> Figure 12 shows a modified example 7 of the protrusion 50 of the cosmetic holder 10 of the present invention. In modified example 7, the protrusion 50 is provided such that the first protrusion 1501 protrudes directly from the inner circumferential surface 112 of the peripheral wall 110 of the cosmetic holder 10. That is, the first protrusion 1501 of this modified example is formed in the shape of a substantially rectangular rib that extends circumferentially along the peripheral wall 110. Its tip portion 1515 is formed by being obliquely cut out so that the corner portion 1517 between it and the side portion 1514 is an acute angle. A second protrusion 1502 is connected to the base end portion 1516 of the first protrusion 1501. The second protrusion 1502 is formed in the shape of a substantially triangular shape that extends obliquely along the inner circumferential surface 112. In this modified example as well, the first projection 1501 and the adjacent second projection 1502 are formed so as not to overlap with each other in the circumferential direction.

[0061] <Other variations> The method of fixing the peripheral wall 110 and the second protrusion 502, and the method of fixing the connection portion between the first protrusion 501 and the second protrusion 502 in each of the embodiments described above are not particularly limited, but from the standpoint of manufacturing and strength, it is preferable to form them integrally by injection molding. If the first protrusion 501 and the second protrusion 502 are not connected but provided separately, the first protrusion 501 may be formed to be directly fixed to the inner circumferential surface 112 of the peripheral wall 110.

[0062] Furthermore, in the above embodiments and their respective modifications, the peripheral wall 110 of the cosmetic holder 10 is formed in a substantially cylindrical shape, but the shape is not limited to this, and it may be a rectangular prism or a cylindrical shape with a polygonal cross-section. Furthermore, while the "circumferential direction" in the above embodiments and each of the modified examples refers to extending at an angle perpendicular to the axis of the rod-shaped cosmetic held in the cosmetic holder 10, the angle of extension in the "circumferential direction" is not necessarily limited to 90 degrees with respect to the axis, but is permitted within a range of 90 ± 45 degrees.

[0063] The material of the cosmetic holder 10 in this embodiment is not particularly limited as long as it can hold a rod-shaped cosmetic and withstand the heat of the molten cosmetic. Various metals and synthetic resin materials, one or more of them can be used in combination. However, from the viewpoint of ease of molding the holder itself and ease of demolding the rod-shaped cosmetic, resin materials such as polyethylene resin, polypropylene resin, polystyrene resin, polyacetal resin, polyacrylonitrile styrene resin, and polyacrylonitrile butadiene styrene resin can be suitably used.

[0064] The cosmetic holder 10 of this embodiment can be used in any container that can hold a stick-shaped cosmetic, and is particularly advantageous for containers of stick-shaped cosmetics such as lipstick, lip balm, stick-type concealer, stick-type blush, face color, eye color, skin whitening stick, sunscreen stick, antiperspirant stick, and fragrance stick. The cosmetic holder 10 of this embodiment is effective for soft stick-shaped cosmetics, but of course, it can also be used for stick-shaped cosmetics of general hardness that are not soft.

[0065] The term "soft type of stick-shaped cosmetic" as used herein refers to a base that primarily consists of a solid oil and / or an oily gelling agent that forms the framework for maintaining the stick shape of the cosmetic, and a non-solid oil that adjusts the feel and amount applied during application. The solid oil content in the base is less than 15% by mass, preferably 2 to 12% by mass, and to this base, colorants such as dyes, pigments, and pearls, extender powders, cosmetic ingredients, water-based ingredients, preservatives, antioxidants, etc., are added, preferably in amounts of about 0.0001 to 40 parts by mass per 100 parts by mass of the base.

[0066] Now, although various embodiments and modifications have been described above, these embodiments and modifications can of course be combined to form a complete system. Furthermore, this disclosure is not limited in any way to the embodiments described above, and can be implemented in various forms without departing from the gist of this disclosure. [Explanation of symbols]

[0067] 1 ... Stick-shaped cosmetic container 10 … … Cosmetic product holder 50 … … Protrusion 110 … … Peripheral wall 112 … … Inner peripheral surface 501 … … First protrusion 502 … … Second protrusion 503 ... Bent section 515 … … Tip part 516 … … Base end 525 … … Tip 526 … … Base end

Claims

1. A cosmetic holder for holding a stick-shaped cosmetic product inside a cosmetic container, A cylindrical peripheral wall is provided inside which the rod-shaped cosmetic is placed and which allows one end of the rod-shaped cosmetic to protrude, A first projection is provided on the inner circumferential surface side of the peripheral wall and extends in a direction along the circumferential direction of the peripheral wall, A second projection is provided on the inner circumferential surface side of the aforementioned circumferential wall and extends in a direction different from the circumferential direction. Equipped with, The first protrusions are provided in multiple locations along the circumferential direction of the inner surface, The second protrusions are provided in multiple locations along the circumferential direction of the inner surface, and are provided on one end side of the rod-shaped cosmetic product in the axial direction of the rod-shaped cosmetic product compared to the first protrusions. Cosmetic product holder.

2. The plurality of first protrusions are arranged in a manner that their relative positions are aligned on substantially the same line along the circumferential direction of the inner surface. The cosmetic holder according to feature 1.

3. The second projection is provided so as to extend in a spiral direction along the inner circumferential surface of the peripheral wall. The cosmetic holder according to feature 1.

4. The first protrusion is provided in a continuous manner with the second protrusion. The cosmetic holder according to feature 1.

5. The second protrusion is formed so as not to overlap with an adjacent second protrusion in the circumferential direction of the inner surface. The cosmetic holder according to feature 1.

6. The first projection is formed such that the side surface facing the peripheral wall is aligned with the side surface of the adjacent second projection. The cosmetic holder according to feature 1.

7. The first and second protrusions are formed in a continuous annular shape along the circumferential direction of the peripheral wall in a plan view. The cosmetic holder according to feature 1.

8. The first projection has a tip at one end in the direction of extension and a base at the other end, In a plan view, the width narrows from the base end to the tip end. The cosmetic holder according to feature 1.

9. The first projection comprises two side portions that are continuous with each other at the tip and continuous with both ends of the base portion. The tip portion is formed such that the angle formed by the two side portions is an acute angle. The cosmetic holder according to feature 8.

10. The first protrusion is formed such that a part or all of the side surface facing the peripheral wall is spaced apart from the inner surface of the peripheral wall. The cosmetic holder according to feature 8.

11. The first protrusion is formed such that the distance between the side surface facing the peripheral wall and the inner surface of the peripheral wall increases from the base end to the tip end. The cosmetic holder according to feature 10.

12. The first protrusion is formed such that the angle of the inward corner formed by the side surface facing the peripheral wall and the inner surface of the peripheral wall is acute. The cosmetic holder according to feature 10.

13. The second protrusion is formed by extending from adjacent second protrusions at different inclination angles. The cosmetic holder according to feature 1.

14. The plurality of second protrusions, each extending at two different inclination angles, are alternately arranged along the circumferential direction of the peripheral wall. The cosmetic holder according to feature 1.

15. The second projection has a tip at one end in the extension direction, on the side of the rod-shaped cosmetic, and a base at the other end. The tip portion is formed at a different position in the axial direction of the rod-shaped cosmetic product from the tip portion of the adjacent second protrusion. The cosmetic holder according to feature 1.

16. The second projection has a tip at one end in the direction of extension and a base at the other end, The tip portion is located at approximately the same position as the lowest end of the upper edge of the peripheral wall in the axial direction of the front rod-shaped cosmetic, and is also lower than the lowest end. The cosmetic holder according to feature 1.

17. A cosmetic holder for holding a stick-shaped cosmetic product inside a cosmetic container, A cylindrical peripheral wall is provided inside which the rod-shaped cosmetic is placed and which allows the tip of the rod-shaped cosmetic to protrude, The peripheral wall comprises a plurality of protrusions provided at predetermined intervals on the inner surface side, The protrusion has a first protrusion extending in a first direction which is along the inner surface of the peripheral wall, and a second protrusion extending from one end of the first protrusion in a second direction different from the first direction which is along the inner surface of the peripheral wall. Cosmetic product holder.

18. The first projection extends in a direction perpendicular to the axial direction of the rod-shaped cosmetic, The second projection extends from one end of the first projection toward the tip of the rod-shaped cosmetic. The cosmetic holder according to feature 17.

19. A cosmetic holder for holding a stick-shaped cosmetic product inside a cosmetic container, A cylindrical peripheral wall is provided inside which the rod-shaped cosmetic is placed and which allows one end of the rod-shaped cosmetic to protrude, A first projection is provided on the inner circumferential surface side of the circumferential wall and extends in one direction along the circumferential direction of the circumferential wall, A second projection is provided on the inner circumferential surface side of the peripheral wall, extends spirally along the inner circumferential surface of the peripheral wall, and connects to the first projection. Equipped with, Multiple first protrusions are provided along the peripheral wall such that their relative positions are aligned on substantially the same line along the circumferential direction of the inner peripheral surface. The second protrusions are provided in multiple locations along the circumferential direction of the inner surface, and are provided on one end side of the rod-shaped cosmetic product in the axial direction of the rod-shaped cosmetic product, compared to the first protrusions. The first projection has a tip at one end in the extension direction and a base at the other end, It comprises two side portions that are connected to each other at the tip and connected to both ends of the base end, The side portion facing the peripheral wall is formed spaced apart from the inner peripheral surface of the peripheral wall. Cosmetic product holder.

20. A cosmetic container comprising a cosmetic holder according to claims 1 to 19.

21. A cosmetic container equipped with a cosmetic holder according to claims 1 to 19, The stick-shaped cosmetic contained in the aforementioned cosmetic container, Equipped with, The rod-shaped cosmetic is filled within the cosmetic holder to a predetermined length from the first protrusion in the axial direction opposite to the side on which the second protrusion is provided. cosmetics.

Images