High-comfort nail tip and nail tip assembly
By optimizing the design of the back width and total length of the nail art pieces, the discomfort caused by the nail art pieces not being able to completely conform to the shape was solved, achieving a high level of comfort after application.
Patent Information
- Application Number
- CN202520349031.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Current nail art stickers cannot perfectly mimic the curves of each customer's nails, causing discomfort to the wearer.
Design a nail art tip with a maximum back width of 6.1mm to 14.6mm, and a specific width ratio and total length to ensure improved comfort after application.
Even if the back of the nail extensions cannot perfectly mimic the surface of the nail, they can still provide a high level of comfort.
Smart Images
Figure CN223886448U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of nail art pieces, specifically to a nail art piece with high comfort and a nail art piece assembly having the nail art piece. Background Technology
[0002] Modern nail extensions are typically designed based on the standard shape of human nails to ensure that their backs closely conform to the surface contours of natural nails. This contouring design aims to create a seamless fit between the extension and the real nail after application, reducing any foreign body sensation and enhancing wearer comfort. Simultaneously, the front of the extension is also carefully designed to mimic the appearance of natural nails, resulting in a natural and realistic overall visual effect once applied.
[0003] To secure nail extensions to the nail surface, a special gel is applied to the back of the extension, which is then cured by UV light to achieve a strong bond. However, due to the gel layer, the back of the extension cannot perfectly adhere to the user's nail surface; some space must be left to accommodate the gel. Furthermore, nail shapes vary from person to person, and not everyone's nails conform to a so-called "standard" shape. Even if the extensions are designed according to an idealized standard nail shape, they cannot perfectly fit every customer's nail curve, and the wearer may still experience some discomfort. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a nail art piece with high comfort and a nail art piece assembly having the nail art piece. Even if the back of the nail art piece cannot completely imitate the surface of the human nail, it can still make the user feel more comfortable after being pasted onto the surface of the human nail.
[0005] To address the aforementioned issues, this invention provides a nail tip with enhanced comfort, comprising a nail tip body that can be laid flat on a horizontal plane, with the back of the nail tip body arched upwards, and the maximum width of the back of the nail tip body being 6.1mm to 14.6mm.
[0006] Furthermore, the outermost width of the plate body is 6.5mm to 15mm.
[0007] Furthermore, the outer width is 0.4mm to 0.8mm wider than the maximum width of the back surface of the armor plate body.
[0008] Furthermore, the maximum width of the leading edge surface of the armor plate body is 0 or 3.6 mm to 13.6 mm.
[0009] Furthermore, the maximum width of the front edge of the back surface of the armor plate body is 0 or 2.2 mm to 12.0 mm.
[0010] Furthermore, the maximum width of the leading edge surface of the armor plate body is 0 or 3.6mm to 13.6mm, and when the maximum width of the leading edge surface of the armor plate body is not 0mm, it is 1.4mm to 1.6mm wider than the maximum width of the leading edge of the back side of the armor plate body.
[0011] Furthermore, the total length of the armor plate body in the front-to-back direction is 12.5mm to 34mm.
[0012] A nail tip assembly is also provided, comprising multiple nail tips of different sizes, wherein at least one nail tip is a nail tip as described above.
[0013] Furthermore, the nail art pieces are at least two pieces, not exactly the same size, and the ratio of the maximum width of the leading edge of the nail body to the total width of the nail body is the same for all nail art pieces.
[0014] Furthermore, the nail plate has five pieces, each used to be pasted onto the nail surface of the five fingers on the same palm.
[0015] Beneficial effects: The nail art piece of this utility model has a maximum width of 6.1mm to 14.6mm on the back side of the nail body. Even if the back side of the nail body cannot completely imitate the shape of the human nail surface, experimental verification shows that it can still make the user feel more comfortable after being pasted onto the human nail surface. Attached Figure Description
[0016] Figure 1 This is a simplified structural diagram of a nail art piece viewed from below, showing its total length.
[0017] Figure 2 This is a simplified structural diagram of a nail art piece viewed from below, showing the inner to outer width.
[0018] Figure 3 This is a simplified structural diagram of a nail art piece from the front view, showing the outer width and the outer edge width.
[0019] Figure 4 This is a simplified structural diagram of a nail art piece from the front view, showing the outer width and the inner width of the front edge.
[0020] Symbol explanation:
[0021] 1-Plate body; 10-Edge surface; 11-Back side of plate body; 111-Front edge of back side of plate body; 12-Front edge surface; A-Inner width; B-Outer width; C-Outer width of front edge; D-Inner width of front edge; E-Total length. Detailed Implementation
[0022] The present invention will be further described in detail below with reference to specific embodiments.
[0023] The nail tip assembly includes five nail tips, each a slightly different size, designed to be applied to the nail surfaces of the five fingers on the same hand. For example, see... Figure 1 It includes a plate body 1, which is symmetrical from left to right, with its back side 11 arched upwards; the left, right, and rear edge surfaces 10 of the plate body 1 face downwards as the bottom surface, and the plate body 1 can be positioned using the left and right bottom surfaces (i.e., the left and right edge surfaces 10) as... Figure 3 The nail plate is placed flat on a horizontal plane (i.e., the dotted line in the figure). The back side 11 of the nail plate body 1 can be pasted onto the surface of the nail after applying gel. However, because the back side 11 of the nail plate body 1 cannot completely conform to the shape of the user's nail surface, it may cause some discomfort to the user after pasting onto the nail surface.
[0024] The inventors discovered that when the back surface 11 of the nail tip body 1 cannot perfectly mimic the shape of a human nail surface, several factors affect user comfort after the nail tip is applied to the nail surface. The shape of the back surface 11 and the nail tip's own center of gravity have a significant impact on comfort. These two factors are further influenced by several sub-factors, such as the total length and width of the nail tip body 1. Among these, the inner width A of the nail tip body 1 (see...) Figure 2 The maximum width of the back surface 11 of the armor plate 1 in the left-right direction (the inner width A) has a significant impact. To test the comfort differences caused by different values of the inner width A of the armor plate 1, the following table shows the results:
[0025]
[0026]
[0027] Note: In the 14 sets of data given in Table 1 above, the comfort score is out of 100. Each set represents the comfort score given by a tester after trying on the corresponding nail art pieces. Except for the inner width A of the nail body 1, the other parameters of the nail art pieces are the same: the outer width B of the nail body 1 (see below for details) is 15mm; the outer width C of the front edge of the nail body 1 (see below for details) is 13.6mm; the inner width D of the front edge of the nail body 1 (see below for details) is 12.0mm; and the total length E of the nail body 1 in the front-to-back direction is 34mm.
[0028] As shown in Table 1 above: Experimental groups 1-5 used the same nail tips, corresponding to nail art tips with an inner width A of 14.6mm. These five groups all had high comfort scores, with an average score of 92.6. Experimental groups 6-10 used the same nail tips, corresponding to nail art tips with an inner width A of 6.1mm. These five groups also had high comfort scores, with an average score of 91.6. Control groups 11 and 12 used the same nail tips, corresponding to nail art tips with an inner width A of 16.76mm. These two groups had lower comfort scores compared to the experimental groups, with an average score of only 76.5. Control groups 13 and 14 used the same nail tips, corresponding to nail art tips with an inner width A of 4.75mm. These two groups also had lower comfort scores compared to the experimental groups, with an average score of only 77. In summary, in this embodiment, the nail art pieces with an inner width A of 6.1mm and 14.6mm are more comfortable than those with an inner width A of 16.76mm and 4.75mm; in other embodiments, nail art pieces with an inner width A of 6.1mm to 14.6mm are all quite comfortable after being pasted onto the surface of the nail.
[0029] The comfort of nail extensions is not only greatly affected by the inner width A of the nail extension body 1, but also by several other parameters such as the outer width B, the outer front width C, the inner front width D, and the total length E of the nail extension body 1 in the front-back direction. These parameters have a slightly smaller impact than the inner width A. These parameters will be tested one by one in the following text.
[0030] See Figure 2 The maximum width of the armor plate body 1 in the left-right direction is the outer width B. To test the comfort differences caused by different values of the outer width B of the armor plate body 1, the following table was obtained:
[0031] Serial Number Specific values of the outer width B of the armor plate body 1 Comfort rating Experimental group 1 15mm 94 Experimental group 2 15mm 93 Experimental group 3 15mm 91 Experimental group 4 15mm 95 Experimental group 5 15mm 93 Experimental group 6 6.5mm 93 Experimental group 7 6.5mm 91 Experimental group 8 6.5mm 91 Experimental group 9 6.5mm 92 Experimental group 10 6.5mm 93 Control group 11 17.49mm 79 control group 12 17.49mm 80 Control group 13 6.03mm 82 Control group 14 6.03mm 78
[0032] Note: In the 14 sets of data given in Table 2 above, the comfort score is out of 100. Each set represents the comfort score given by a tester after trying on the corresponding nail art pieces. Except for the width B of the nail art piece body 1, the other parameters of the nail art pieces are the same: the inner width A of the nail art piece body 1 is 14.6mm; the outer width C of the front edge of the nail art piece body 1 (see below for details) is 13.6mm; the inner width D of the front edge of the nail art piece body 1 (see below for details) is 12.0mm; and the total length E of the nail art piece body 1 in the front-to-back direction is 34mm.
[0033] As shown in Table 2 above: Experimental groups 1-5, which use the same nail tips (with a width B of 15mm from the outer edge of the nail tip 1), all had high comfort scores, averaging 93.2 points. Experimental groups 6-10, which use the same nail tips (with a width B of 6.5mm from the outer edge of the nail tip 1), also had high comfort scores, averaging 92 points. Control groups 11 and 12, which use the same nail tips (with a width B of 17.49mm from the outer edge of the nail tip 1), had lower comfort scores compared to the experimental groups, averaging only 79.5 points. Control groups 13 and 14, which use the same nail tips (with a width B of 6.03mm from the outer edge of the nail tip 1), also had lower comfort scores compared to the experimental groups, averaging only 80 points. In summary, in this embodiment, the nail art pieces with an outer width B of 6.5mm and 15mm are more comfortable than those with an outer width B of 6.03mm and 17.49mm. In other embodiments, nail art pieces with an outer width B of 6.5mm to 15mm are generally more comfortable after being attached to the surface of the nail.
[0034] Furthermore, the difference between the outer width B and the inner width A (the outer width B is always wider than the inner width A) also affects the comfort of the nail art. To test the comfort differences caused by different differences between the outer width B and the inner width A, the following results were obtained from the experiment.
[0035] Table 3:
[0036]
[0037] Note: In the 14 sets of data given in Table 3 above, the comfort score is out of 100. Each set represents the comfort score given by a tester after trying on the corresponding nail art pieces. Except for the different values of the inner width A and the outer width B of the nail art piece 1 (i.e., the difference between the outer width B and the inner width A), the other parameters of the nail art pieces are the same: the outer width C of the front edge of the nail art piece 1 (see below for specific meaning) is 13.6mm; the inner width D of the front edge of the nail art piece 1 (see below for specific meaning) is 12.0mm; and the total length E of the nail art piece 1 in the front-to-back direction is 34mm.
[0038] As shown in Table 3 above: Experimental groups 1 and 2 used the same nail tips, corresponding to nail tips with an inner width A of 6.1mm, an outer width B of 6.5mm, and a difference of 0.4mm between the outer width B and inner width A. Both groups had high comfort scores, with an average score of 91. Experimental groups 3 and 4 also used the same nail tips, corresponding to nail tips with an inner width A of 7.0mm, an outer width B of 7.5mm, and a difference of 0.5mm between the outer width B and inner width A. Both groups of 16 had high comfort scores, averaging 91.5 points. Groups 5 and 6 used the same nail tips, with the inner width A of tip 1 being 8.4mm, the outer width B being 9.0mm, and the difference between the outer width B and inner width A being 0.6mm. Both groups had high comfort scores, averaging 93 points. Groups 7 and 8 used the same nail tips, with the inner width A of tip 1 being 11.3mm, the outer width B being 12.0mm, and the difference between the outer width B and inner width A being 0.6mm. For nail art pieces with a 0.7mm difference between the inner width (A) and outer width (B), both groups received high comfort scores, averaging 92 points. Experimental groups 9 and 10 used the same nail art pieces, with the inner width (A) of nail art piece 1 measuring 14.2mm, the outer width (B) measuring 15.0mm, and a 0.8mm difference between the outer width (B) and inner width (A). Both groups received high comfort scores, averaging 90.5 points. Control groups 11 and 12 used the same nail art pieces, with the inner width (A) of nail art piece 1 measuring 7.0mm... The nail art pieces with a width B of 7.2mm from the outer edge of the nail body 1 and a difference of 0.2mm between the outer edge width B and the inner edge width A had lower comfort scores than the experimental group, with an average score of only 86.5. The control groups 13 and 14 used the same nail art pieces with a width A of 11.3mm from the inner edge of the nail body 1 and a width B of 12.5mm from the outer edge of the nail body 1, and a difference of 1.2mm between the outer edge width B and the inner edge width A. These two groups also had lower comfort scores than the experimental group, with an average score of only 85.5.
[0039] In summary, for nail art pieces with an inner width A of 6.1mm to 14.6mm and an outer width B of 6.5mm to 15mm, the preferred difference between the outer width B and the inner width A (i.e., the outer width B being wider than the inner width A) is 0.4mm to 0.8mm, as such nail art pieces offer better comfort.
[0040] See Figure 3 The maximum width of the front edge surface 12 of the nail plate body 1 in the left-right direction is the front edge outer width C. All nail plates in the nail plate assembly have the same ratio of front edge outer width C to outer width B. To test the comfort differences caused by different values of the front edge outer width C of the nail plate body 1, the following table shows the results:
[0041]
[0042]
[0043] Note: In the 19 sets of data given in Table 4 above, the comfort score is out of 100. Each set represents the comfort score given by a tester after trying on the corresponding nail art pieces. Except for the different values of the outer width C of the front edge of the nail art piece 1, the other parameters of the nail art pieces tried on are the same: the inner width A of the nail art piece 1 is 14.6mm; the outer width B of the nail art piece 1 is 15mm; the inner width D of the front edge of the nail art piece 1 (see below for specific meaning) is 12.0mm; and the total length E of the nail art piece 1 in the front-to-back direction is 34mm.
[0044] As shown in Table 4 above: Groups 1-5, which use the same nail tips, have a nail tip body 1 with an outer front width C of 0mm (at this time, the front surface 12 of the nail tip body 1 is pointed rather than flat). These five groups all have high comfort scores, with an average score of 92. Groups 6-10, which use the same nail tips, have a nail tip body 1 with an outer front width C of 3.6mm. These five groups also have high comfort scores, with an average score of 91.6. Groups 11-15, which use the same nail tips, have a nail tip body 1 with an outer front width C of 13.6mm. These five groups also have high comfort scores, with an average score of 92.4.
[0045] Control groups 16 and 17 used the same nail tips, corresponding to nail tips with a frontal width C of 15.04 mm. These two groups had lower comfort scores compared to the experimental group, with an average score of only 80 points. Control groups 18 and 19 also used the same nail tips, corresponding to nail tips with a frontal width C of 0.53 mm. These two groups also had lower comfort scores compared to the experimental group, with an average score of only 84.5 points. In conclusion, nail tips with a frontal width C of 0 mm or 0.2 mm to 5.4 mm provide better comfort when applied to the nail surface than nail tips with a frontal width C of 0.53 mm or 15.04 mm.
[0046] See Figure 4 The maximum width of the front edge 111 of the back surface 11 of the armor plate body 1 is the inner width D of the front edge. To test the comfort differences caused by different values of the inner width D of the front edge of the armor plate body 1, the following table shows the results:
[0047] Serial Number Specific values of the inner width D of the front edge of the armor plate body 1 Comfort rating Experimental group 1 0mm 92 Experimental group 2 0mm 92 Experimental group 3 0mm 93 Experimental group 4 0mm 92 Experimental group 5 0mm 93 Experimental group 6 2.2mm 93 Experimental group 7 2.2mm 90 Experimental group 8 2.2mm 91 Experimental group 9 2.2mm 93 Experimental group 10 2.2mm 93 Experimental group 11 12.0mm 93 Experimental group 12 12.0mm 92 Experimental group 13 12.0mm 91 Experimental group 14 12.0mm 92 Experimental group 15 12.0mm 93 control group 16 13.72mm 81 control group 17 13.72mm 81 control group 18 2.06mm 86 control group 19 2.06mm 84
[0048] Note: In the 19 sets of data given in Table 5 above, the comfort score is out of 100. Each set represents the comfort score given by a tester after trying on the corresponding nail art pieces. The nail art pieces tried on are the same except for the inner width D of the front edge of the nail body 1: the inner width A of the nail body 1 is 14.6mm; the outer width B of the nail body 1 is 15mm; the outer width C of the front edge of the nail body 1 is 13.6mm; and the total length E of the nail body 1 in the front-to-back direction is 34mm.
[0049] As shown in Table 5 above: Groups 1-5 (using the same nail tip, corresponding to nail tips with an inner front width D of 0mm for the nail tip body 1, where the front edge 12 is pointed rather than flat) all had high comfort scores, averaging 92.4 points; Groups 6-10 (using the same nail tip, corresponding to nail tips with an inner front width D of 2.2mm for the nail tip body 1) also had high comfort scores, averaging 92 points; Groups 11-15 (using the same nail tip, corresponding to nail tips with an inner front width D of 2.2mm for the nail tip body 1) also had high comfort scores, averaging 92 points; For nail art pieces with an inner width D of 12.0mm, all five groups achieved high comfort scores, averaging 92.2 points. Control groups 16 and 17, using the same nail art pieces with an inner width D of 13.72mm at the front edge of the nail body 1, had lower comfort scores compared to the experimental groups, averaging only 81 points. Control groups 18 and 19, also using the same nail art pieces with an inner width D of 2.06mm at the front edge of the nail body 1, also had lower comfort scores compared to the experimental groups, averaging only 85 points. In conclusion, nail art pieces with an inner width D of 0mm or between 2.2mm and 12.0mm at the front edge of the nail body 1 provide superior comfort when applied to the nail surface compared to those with inner widths of 2.06mm or 13.72mm.
[0050] Furthermore, the difference between the outer front width C and the inner front width D (where the outer front width C is not 0mm and is always greater than the inner front width D) also affects the comfort of the nail art. To test the comfort differences caused by different differences between the outer front width C and the inner front width D, the experiment yielded the following Table 6:
[0051]
[0052] Note: In the 14 sets of data given in Table 6 above, the comfort score is out of 100. Each set represents the comfort score given by a tester after trying on the corresponding nail art pieces. The nail art pieces tried on are the same except for the different values of the outer width C and the inner width D of the front edge of the nail art piece 1 (i.e., the difference between the outer width C and the inner width D of the front edge). The inner width A of the nail art piece 1 is 14.6mm; the outer width B of the nail art piece 1 is 15mm; and the total length E of the nail art piece 1 in the front-to-back direction is 34mm.
[0053] As shown in Table 6 above: Experimental groups 1 and 2 used the same nail tips, corresponding to nail tips with an outer front width C of 3.6mm, an inner front width D of 2.2mm, and a difference of 1.4mm between the outer and inner front widths C and D. Both groups had high comfort scores, with an average score of 90.5. Experimental groups 3 and 4 also used the same nail tips, corresponding to nail tips with an outer front width C of 4.5mm, an inner front width D of 3.0mm, and a difference of 1.5mm between the outer and inner front widths C and D. The first two groups of nail art pieces had high comfort scores, averaging 92.5 points. Groups 5 and 6 used the same nail art pieces, with the outer edge width C of nail art piece 1 being 7.5mm, the inner edge width D of nail art piece 1 being 6.0mm, and the difference between the outer edge width C and the inner edge width D being 1.5mm. These two groups also had high comfort scores, averaging 93 points. Groups 7 and 8 used the same nail art pieces, with the outer edge width C of nail art piece 1 being 10.0mm, the inner edge width D of nail art piece 1 being 8.6mm, and the difference between the outer edge width C and the inner edge width D being 1.5mm. Nail art pieces with a difference of 1.4mm between the front edge width C and the inner front edge width D had high comfort scores, averaging 91 points. Experimental groups 9 and 10 used the same nail art pieces, corresponding to nail art pieces with a front edge outer width C of 13.6mm, a front edge inner width D of 12.0mm, and a difference of 1.6mm between the front edge outer width C and the front edge inner width D. These two groups also had high comfort scores, averaging 91.5 points. Control groups 11 and 12 used the same nail art pieces, corresponding to nail art pieces with a front edge outer width C of 3.6mm. The first group, consisting of nail art pieces with a frontal inner width D of 3.0mm and a frontal outer width C that differs from the frontal inner width D by 0.6mm, had lower comfort scores compared to the experimental group, with an average score of only 85. The second group, consisting of control groups 13 and 14, used the same nail art pieces with a frontal outer width C of 13.6mm, a frontal inner width D of 11.6mm, and a frontal outer width C that differs from the frontal inner width D by 2.0mm. These two groups also had lower comfort scores compared to the experimental group, with an average score of only 87.5.
[0054] In summary, for nail art pieces with an outer front width C of 3.6mm to 13.6mm and an inner front width D of 2.2mm to 12.0mm, the preferred value is the difference between the outer front width C and the inner front width D (i.e., the inner front width D being wider than the outer front width C) of 1.4mm to 1.6mm, as such nail art pieces offer better comfort.
[0055] To test the total length E of the armor plate body 1 in the front-to-back direction (see...) Figure 1 The differences in comfort levels resulting from different values are shown in Table 7 below:
[0056]
[0057]
[0058] Note: In the 14 sets of data given in Table 7 above, the comfort score is out of 100. Each set represents the comfort score given by a tester after trying on the corresponding nail art pieces. Except for the total length E of the nail art piece body 1 in the front-to-back direction, the other parameters of the nail art pieces tried on are the same: the inner width A of the nail art piece body 1 is 14.6mm; the outer width B of the nail art piece body 1 is 15mm; the outer width C of the front edge of the nail art piece body 1 is 13.6mm; and the inner width D of the front edge of the nail art piece body 1 is 12.0mm.
[0059] As shown in Table 7 above: Experimental groups 1-5 used the same nail tips, corresponding to nail tips with a total length E of 34mm in the front-to-back direction. These five groups had high comfort scores, with an average score of 92.8. Experimental groups 6-10 used the same nail tips, corresponding to nail tips with a total length E of 12.5mm in the front-to-back direction. These five groups also had high comfort scores, with an average score of 92.2. Control groups 11 and 12 used the same nail tips, corresponding to nail tips with a total length E of 37.68mm in the front-to-back direction. These two groups had lower comfort scores compared to the experimental groups, with an average score of only 80.5. Control groups 13 and 14 used the same nail tips, corresponding to nail tips with a total length E of 10.2mm in the front-to-back direction. These two groups also had lower comfort scores compared to the experimental groups, with an average score of only 80. In summary, in this embodiment, the nail art pieces with a total length E of 12.5mm and 34mm in the front-to-back direction are more comfortable than those with a total length E of 10.2mm and 37.68mm. In other embodiments, nail art pieces with a total length E between 12.5mm and 34mm are generally more comfortable after being attached to the surface of the nail.
[0060] The above description is merely an embodiment of the present invention and does not limit the scope of patent protection. Any non-substantial changes or substitutions made by those skilled in the art based on the present invention will still fall within the scope of patent protection.
Claims
1. A comfortable nail tip, comprising a nail tip body (1) that can be laid flat on a horizontal plane, wherein the back (11) of the nail tip body (1) is arched upwards, characterized in that, The maximum width (A) of the back side (11) of the armor plate body (1) is 6.1mm to 14.6mm.
2. The nail art piece as described in claim 1, characterized in that, The outer width (B) of the armor plate body (1) is 6.5mm to 15mm.
3. The nail art piece as described in claim 2, characterized in that, The outer width (B) is 0.4 mm to 0.8 mm wider than the maximum width (A) of the back side (11) of the armor plate body (1).
4. The nail art piece as described in claim 1, characterized in that, The maximum width (C) of the leading edge surface (12) of the armor plate body (1) is 0 or 3.6 mm to 13.6 mm.
5. The nail art piece as described in claim 1, characterized in that, The maximum width (D) of the front edge (111) of the back side (11) of the armor plate body (1) is 0 or 2.2 mm to 12.0 mm.
6. The nail art piece as described in claim 5, characterized in that, The maximum width (C) of the front edge surface (12) of the plate body (1) is 0 or 3.6 mm to 13.6 mm, and when the maximum width (C) of the front edge surface (12) of the plate body (1) is not 0 mm, it is 1.4 mm to 1.6 mm wider than the maximum width (D) of the front edge (111) of the back surface (11) of the plate body (1).
7. The nail art piece as described in claim 1, characterized in that, The total length (E) of the armor plate body (1) in the front-to-back direction is 12.5 mm to 34 mm.
8. A nail plate assembly comprising multiple nail plates of not exactly the same size, characterized in that, At least one of the nail tips is a nail art tip as described in any one of claims 1 to 7.
9. The apron assembly as described in claim 8, characterized in that, The nail art pieces are at least two pieces, and their sizes are not exactly the same. The ratio of the maximum width (C) of the front edge surface (12) of the nail art piece body (1) to the outer width (B) of the nail art piece body (1) is the same for all nail art pieces.
10. The apron assembly as claimed in claim 8, characterized in that, The nail plate consists of five pieces, each used to be attached to the nail surface of one of the five fingers on the same palm.