Eyelash perm rods

The eyelash perm rod addresses the discomfort and complexity of positioning by using a recess to fit the eyelid shape, enabling easy alignment and reliable curling without additional adhesion, ensuring comfortable and effective eyelash curling.

JP7861249B1Active Publication Date: 2026-05-19GRACE CO LTD +2
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
GRACE CO LTD
Filing Date
2025-07-04
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Existing eyelash perm rods require complex and uncomfortable positioning adjustments due to the convex curved surface's need to be aligned precisely with the eyelid, causing discomfort when pressed against the upper eyelid, especially during eyelid swelling.

Method used

The eyelash perm rod features a recess on its back side to accommodate the upper eyelid swelling, with a concave curved surface fitting the eyelid's shape, allowing easy alignment and fixation without requiring additional adhesive tape, and a continuous treatment surface for curling eyelashes from the root to the tip.

Benefits of technology

The perm rod can be easily set in the appropriate treatment position, absorbing eyelid swelling, ensuring comfortable and reliable curl application without unnatural eyelid manipulation, and providing consistent curl shapes to both the eyelash base and tip.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide an eyelash perm rod that can easily be set in the appropriate position while absorbing the swelling of the patient's upper eyelid. [Solution] The eyelash perm rod according to the present invention is an eyelash perm rod 1 for performing a perm on eyelashes 10 growing along the lower end 11a of the upper eyelid 11 of the person to be treated, and has a base 2 with a continuous treatment surface 4 for curling the eyelashes 10 on the front, bottom and back sides, and a recess 5 for receiving the upper eyelid 11 on the back side of the base 2, and a downwardly recessed concave curved surface 5a is provided at the lower end of the recess 5, so that the concave curved surface 5a fits along the shape of the lower end 11a of the upper eyelid 11. Therefore, the bulge of the upper eyelid 11 can be received by the recess 5 and fixed in an appropriate treatment position.
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Description

Technical Field

[0001] The present invention relates to a perm rod for eyelashes, which is used to fix the upper eyelid and curl the eyelashes when a permanent wave (hereinafter abbreviated as "perm") is applied to the eyelashes growing along the lower end of the upper eyelid.

Background Art

[0002] Conventionally, it has been common to apply a perm to eyelashes, particularly the eyelashes of the upper eyelid, in the same way as hair. The back side of the panel-shaped base of the perm rod for eyelashes is fixed to the upper eyelid, and the eyelashes are adhered along the treatment surface continuously provided on the front side and the bottom side of the base, etc., to give the desired curl shape to the eyelashes. In this document, the direction in which the front of the base of the perm rod for eyelashes faces is expressed as "front", the direction in which the back faces is expressed as "back", the direction in which the bottom faces is expressed as "downward", and the direction opposite to the "downward" is expressed as "upward".

[0003] In order to give the desired curl shape to the eyelashes, it is preferable to curl the target eyelashes from the root, and there is a strong demand for a perm rod that can properly align the treatment surface with the root of the eyelashes.

[0004] Therefore, Patent Documents 1 and 2 below disclose a perm rod for eyelashes, in which the treatment surface is continuously provided from the front side of the base through the bottom side to the back side, and the treatment surface is composed of a "convex curved surface protruding backward" on the back side of the base.

[0005] In addition, the perm rod for eyelashes of Patent Document 3 below is the same as those of Patent Documents 1 and 2 above, in that the treatment surface is continuously provided from the front side of the base through the bottom side to the back side, and the treatment surface is composed of a "convex curved surface protruding backward" on the back side of the base. In particular, the "convex curved surface protruding backward" is realized by providing it as a convex strip (in Patent Document 1: the "convex curved surface portion at the root end side of the convex strip" in Claim 1, FIG. 3, etc.).

Prior Art Documents

[0006] [Patent Document 1] Design Registration No. 1708382 Gazette [Patent Document 2] Design Registration No. 1776643 Gazette [Patent Document 3] Patent No. 7424689 [Overview of the project] [Problems that the invention aims to solve]

[0007] According to the eyelash perm rods of the above-mentioned Patent Documents 1 to 3, if the "convex curved surface that protrudes backward" on the back side of the base of the treatment surface can be guided to the appropriate position and fixed, a curl shape can be reliably applied to the base of the eyelashes. However, guiding it to the appropriate position may require detailed and complicated position adjustment work.

[0008] Furthermore, as shown in Figure 6(A), although there are individual differences, the upper eyelid 11 is soft and bulges on the surface side because it has a lot of fat, and as shown in Figure 6(B), especially when the eye is closed downwards during the procedure, it bulges even more due to the bulge of the cornea 12a of the eyeball 12. In order to position the "posteriorly projecting convex curved surface" along the base of the eyelashes, the "posteriorly projecting convex curved surface" must be pressed so as to dig into the upper eyelid (see Patent Document 3: Figure 3), which may cause discomfort to the person receiving the procedure. [Means for solving the problem]

[0009] The present invention provides an eyelash perm rod that can be easily set in the appropriate treatment position while absorbing the swelling of the upper eyelid of the person being treated.

[0010] In summary, the eyelash perm rod according to the present invention is an eyelash perm rod for performing a perm on eyelashes growing along the lower end of the upper eyelid of a person being treated, Panel-shapedThe base is provided with continuous treatment surfaces for curling the eyelashes on its front, bottom, and back sides, and a recess for receiving the upper eyelid is provided on the back side of the base. A downwardly recessed concave curved surface is provided at the lower end of the recess, so that the concave curved surface fits along the shape of the lower end of the upper eyelid. Therefore, the bulge of the upper eyelid can be received by the recess and fixed in the appropriate treatment position.

[0011] Furthermore, by extending the treatment surface continuously to the lower end opening edge of the recess, the treatment surface can be easily positioned along the base of the eyelashes.

[0012] Preferably, the lower opening edge of the recess is curved to bulge downward and forward, making it easier to accept the upper eyelid. Alternatively, the upper opening edge of the recess is curved to bulge upward and forward, making it easier to accept the upper eyelid.

[0013] Furthermore, by providing the treatment surface with an arc-shaped convex curved surface on the bottom and back sides of the base, it is possible to impart a curl shape not only to the root of the eyelash but also to the middle portion. [Effects of the Invention]

[0014] The eyelash perm rod according to the present invention can be easily set in the appropriate treatment position while absorbing the swelling of the upper eyelid.

[0015] In addition, it can reliably create a curl shape at the base of the eyelashes. [Brief explanation of the drawing]

[0016] [Figure 1] This is a front view of the eyelash perm rod according to the present invention. [Figure 2] This is a rear view of the eyelash perm rod according to the present invention. [Figure 3] This is a right side view of the eyelash perm rod according to the present invention. [Figure 4]It is a plan view of the perm rod for eyelashes according to the present invention. [Figure 5] It is a bottom view of the perm rod for eyelashes according to the present invention. [Figure 6] It is a view showing the state of use by cutting the perm rod for eyelashes according to the present invention. (A) shows the state before being fixed to the upper eyelid, and (B) shows the state after being fixed to the upper eyelid. [Figure 7] It is an end view taken along the line F-F of FIG. 1. [Figure 8] It is an end view taken along the line G-G of FIG. 1. [Figure 9] It is an end view showing an example in which the concave portion has a high back. [Figure 10] It is an end view showing an example in which the concave surface and the treatment surface are brought close to each other. [Figure 11] It is an end view showing an example in which the concave portion is composed of a number of flat portions. [Figure 12] It is an end view showing an example in which the concave portion is extended to the back side of the fixing portion.

Embodiments for Carrying Out the Invention

[0017] The best mode of the perm rod for eyelashes (hereinafter simply referred to as "perm rod") according to the present invention will be described based on FIGS. 1 to 12.

[0018] <Basic Configuration> As shown in FIG. 6, the perm rod 1 according to the present invention is used for performing a perm on the eyelashes 10 growing along the lower end portion (lower edge) 11a of the upper eyelid 11 of the subject.

[0019] As shown in Figures 1 to 5, Figures 7 to 12, etc., the perm rod 1 according to the present invention includes a base 2 whose back side is fixed from the inner corner to the outer corner of the upper eyelid of the person being treated, and the base 2 has a treatment surface 4 for treating the eyelashes to be curled, which is continuous on the front side, bottom side and back side. Preferably, the treatment surface 4 has an arc-shaped convex curved surface 4a on the bottom side and back side of the base 2, so as to be able to impart a beautiful curl to the eyelashes, and is provided continuously to the lower end opening edge 5b of the recess 5 described later so as to be able to treat the base of the eyelashes.

[0020] Preferably, a fixing part 3 is provided on the upper part of the base 2 and integrally with the base 2. The fixing part 3 complements the fixing of the base 2 to the upper eyelid 11 and is fixed to the patient using adhesive means such as adhesive tape as needed. It is desirable that the base 2 and the fixing part 3 be molded from a flexible and elastic material such as rubber or silicone.

[0021] In the present invention, as shown in Figures 1 to 5, 7 and 8, the base 2 has a groove-like recess 5 on its back side that receives the upper eyelid 11, extending over the entire width of the base 2, and a downwardly recessed concave curved surface 5a is provided at the lower end of the recess 5. In addition, the treatment surface 4 is provided not only on the front and bottom sides of the base 2, but also continuously up to the lower end opening edge 5b of the recess 5. Preferably, as shown in Figures 2, 7 and 8, the lower end opening edge 5b of the recess 5 is curved to bulge downward and forward, and the upper end opening edge 5d of the recess 5 is curved to bulge upward and forward.

[0022] Next, the roles of the recess 5, concave curved surface 5a, lower end opening edge 5b, upper end opening edge 5d, and treatment surface 4 in the perm rod 1 according to the present invention will be described while explaining the prerequisite configuration related to the human upper eyelid and eyelashes.

[0023] As shown in Figure 6(A), the human upper eyelid 11 is soft and bulging on the surface due to its high fat content, and the lower end 11a of the upper eyelid 11 is also rounded, with eyelashes 10 growing diagonally downward from this lower end 11a. Therefore, a V-shaped gap S in cross-section is created between the eyelashes 10 and the lower end 11a of the upper eyelid 11, extending from the inner corner to the outer corner of the eye. Furthermore, as shown in Figure 6(B), it is known that when the upper eyelid 11 is closed downward, especially during the procedure, the surface bulges further due to the bulging of the cornea 12a of the eyeball 12.

[0024] In the perm rod 1 according to the present invention, as shown in Figure 6(B), the recess 5 provided on the back side of the base 2 can reliably receive the swollen upper eyelid 11, and the concave curved surface 5a within the recess 5 fits along the rounded shape of the lower end 11a of the upper eyelid 11, allowing it to be fixed in the appropriate treatment position without the need for supplementation by the fixing part 3. In other words, the concave curved surface 5a of the recess 5 acts as a hook and catches on the lower end 11a of the upper eyelid 11, thereby fixing the perm rod 1.

[0025] At this time, the lower end opening edge 5b of the recess 5 fits into the V-shaped gap S between the eyelash 10 and the lower end 11a of the upper eyelid 11, as described above, and fits near the base of the eyelash 10. In the perm rod 1 according to the present invention, since the treatment surface 4 is provided continuously from the front side of the base 2 to the lower end opening edge 5b of the recess 5, the treatment surface 4 can be guided along the eyelash 10 from the base to the tip, and a desired curl shape can be imparted to the entire eyelash 10.

[0026] Furthermore, the upper opening edge 5d of the recess 5 is curved to bulge upward and forward, which also makes it easier to cover the patient's upper eyelid with the recess 5.

[0027] As described above, with the perm rod 1 according to the present invention, the recess 5 on the back side of the base 2 absorbs the swelling of the patient's upper eyelid, and the concave curved surface 5a of the recess 5 fits to the lower end of the upper eyelid, so the perm rod 1 itself can be easily set in the appropriate treatment position. With conventional perm rods, it was necessary to pull up the upper eyelid with adhesive tape or the like to match the shape of the perm rod, but with the perm rod 1 according to the present invention, as described above, the swelling of the upper eyelid can be appropriately absorbed by the recess 5 with the lower end opening edge 5b and the upper end opening edge 5d, so the work of pulling up the upper eyelid is unnecessary, and the direction of the eyelash roots does not change unnaturally as a result of this work, so the treatment can be performed easily and reliably.

[0028] In addition, the lower end opening edge 5b of the recess 5 fits into the gap between the eyelash and the lower end of the upper eyelid, and the treatment surface 4, which is continuous from the lower end opening edge 5b to the front side of the base 2, can be reliably aligned with the base of the eyelash, and a curl shape can be reliably applied to the base of the eyelash.

[0029] Furthermore, since the treatment surface 4 has an arc-shaped convex curved surface 4a on the bottom and back sides of the base 2, that is, a convex curved surface 4a that bulges downward and backward, it is possible to give the base of the eyelash a curl shape that bends forward and the tip a curl shape that bends upward.

[0030] Furthermore, by arranging the shape and size of the convex curved surface 4a of the treatment surface 4 and the concave curved surface 5a of the recessed surface 5, the perm rod 1 according to the present invention can produce further effects in addition to those described above, and can accommodate the shape of the upper eyelid and eyelash growth pattern of the person being treated. The following explanation is based on Figures 7 to 12. In Figures 7 to 12, A is the parent circle of the arc constituting the convex curved surface 4a, B is the parent circle of the arc constituting the concave curved surface 5a, C is the length between the rearmost position of the convex curved surface 4a and the lower end opening edge 5b of the recessed surface 5, D is the thickness between the convex curved surface 4a and the concave curved surface 5a, and E is the thickness between the front side portion of the treatment surface and the recessed surface.

[0031] The perm rod 1 shown in the end views of Figures 7 and 8 is the same as the one shown in Figures 1 to 6. In this embodiment, the perm rod 1 is designed so that the parent circle A of the convex curved surface 4a and the parent circle B of the concave curved surface 5a are circles of the same radius, and the center of the parent circle B is positioned behind the center of the parent circle A. In this embodiment, the recess 5 can be made as low as possible, and the length C between the rearmost position of the convex curved surface 4a and the lower end opening edge 5b of the recess 5 can be shortened to impart a gentle curl shape to the base of the eyelashes. Furthermore, as shown in Figure 7, if the treatment surface 4 on the front side of the base 2 is designed based on a parent circle A' with a larger radius than the parent circle A of the convex curved surface 4a, and a parent circle A'' with a larger radius than the parent circle A', then a curl with a large curvature can be imparted to the base of the eyelashes, and a curl with a curvature that gradually becomes gentler as it approaches the tip of the eyelashes.

[0032] The perm rod 1 shown in the end view of Figure 9 is designed so that the parent circle A of the convex curved surface 4a and the parent circle B of the concave curved surface 5a are circles of the same radius, and the center of parent circle B is at the same level as the center of parent circle A. In this embodiment, the recess 5 can be made as tall as possible, and the length C between the rearmost position of the convex curved surface 4a and the lower end opening edge 5b of the recess 5 can be increased to impart a large curl shape to the base of the eyelashes.

[0033] The perm rod 1 shown in the end view of Figure 10 has a perfect circle as the parent circle A of the convex curved surface 4a and an ellipse as the parent circle B of the concave curved surface 5a, thereby making the thickness D between the convex curved surface 4a and the concave curved surface 5a as thin as possible and making it more transparent. This makes it easier to find eyelashes and thin eyelashes that are buried under the convex curved surface 4a, which is the treatment surface 4. In addition, the perm rod 1 in Figure 10 is designed so that the thickness E between the front part of the treatment surface 4 and the concave part 5 is also as thin as possible. By designing it in this way, the base 2 of the perm rod 1 can be easily deformed, which also contributes to proper treatment.

[0034] The perm rod 1 shown in the end view of Figure 11 illustrates an example in which the concave curved surface 5a is constructed from an ultra-fine flat surface 5c. By constructing the concave curved surface 5a with this ultra-fine flat surface 5c, it is possible to make it easier to fit the upper eyelid of the person receiving the treatment.

[0035] The perm rod 1 shown in the end view of Figure 12 shows an example in which the recess 5 is extended to the back side of the fixing part 3. By making the recess 5 larger in this way, the upper eyelid can be received more easily, and the base 2 and fixing part 3 can be deformed more easily, which can contribute to a more appropriate procedure. In Figure 12, the relationship between the thumb circle A, thumb circle A', and thumb circle A'' is the same as in Figure 7, where the radius of thumb circle A < the radius of thumb circle A' < the radius of thumb circle A''.

[0036] In the embodiments shown in Figures 7 to 11, the convex surface 4a is formed from the arc of a single parent circle. However, the invention is not limited to this, and it is also possible to construct the convex surface 4a with different curvatures on the bottom and back sides of the base 2, as shown in the embodiment in Figure 12, depending on the implementation. Furthermore, the ratio of the radii of parent circle A and parent circle B, and the fact that both or one of parent circles A and B are ellipses, are also optional depending on the implementation. [Explanation of symbols]

[0037] 1… Eyelash perm rods 2...Base 3…Fixed part 4...Treatment surface, 4a...Convex curved surface 5…recess, 5a…concave curved surface, 5b…lower end opening edge, 5c…extremely thin flat surface, 5d…upper end opening edge 10…eyelashes 11...upper eyelid 12...eyeball, 12a...cornea S... The gap between the lower edge of the upper eyelid and the eyelashes A... The parent circle of the arc that constitutes the convex curved surface of the treatment surface. B... The parent circle of the arc that forms the concave surface of the recess. C...Length between the rearmost position of the convex surface and the lower end opening edge of the recess D...Thickness between the convex and concave surfaces of the treatment area. E...Thickness between the front part of the treatment surface and the recessed area

Claims

1. An eyelash perm rod for perming eyelashes growing along the lower edge of the upper eyelid of a person to be treated, characterized in that the panel-shaped base has continuous treatment surfaces for curling the eyelashes on its front, bottom, and back sides, and the back side of the base has a recess for receiving the upper eyelid, and the lower end of the recess has a downwardly recessed concave curved surface so that the concave curved surface fits along the shape of the lower edge of the upper eyelid.

2. The eyelash perm rod according to claim 1, characterized in that the treatment surface described above is continuous to the lower end opening edge of the recess described above.

3. The eyelash perm rod according to claim 1, characterized in that the lower end opening edge of the recess is curved so as to bulge downward and forward.

4. The eyelash perm rod according to claim 1, characterized in that the upper opening edge of the recess is curved so as to bulge upward and forward.

5. The eyelash perm rod according to claim 1, characterized in that the treatment surface has an arc-shaped convex curved surface on the bottom and back sides of the base.