Manufacturing method of dermatitis treatment tool

Abstract

To provide a manufacturing method of a dermatitis treatment tool having a treating function of preventing, calming and alleviating dermatitis, and capable of straightening curly hair, making the hair voluminous and smooth, and removing oily components adhering to the hair and scalp.SOLUTION: A dermatitis treatment tool manufacturing method includes a skin contact part made of stainless steel containing specific content of C, Si, Mn, P, S, Ni and Cr, and an operating part for operating the skin contact part, where the stainless steel is obtained by a heat treatment process including: a quenching step of applying heat treatment within a temperature range of 1,000 to 1,100°C; a tempering step of applying heat treatment within a temperature range of 100 to 200°C; and an annealing step of applying heat treatment within a temperature range of 700 to 900°C, and the stainless steel has a Rockwell hardness (HRC) of 58 or more.SELECTED DRAWING: Figure 18

Description

[Technical Field]

[0001] The present invention relates to an anti-dermatitis tool, particularly an anti-dermatitis comb, which uses special stainless steel that can suppress the onset and condition of eczema (dermatitis) that appears on the body, particularly the scalp and face, and is used to prevent the onset of dermatitis and to soothe and alleviate dermatitis. [Background technology]

[0002] Dermatitis accompanied by itching, erythema, papules, small blisters, etc. is a very common skin disease experienced by people of all ages and genders (e.g., Non-Patent Documents 1 to 3). The type and cause of dermatitis that develops varies depending on age, but typical examples of dermatitis include seborrheic dermatitis, contact dermatitis, dry dermatitis, asteatotic dermatitis, and atopic dermatitis.

[0003] In particular, dermatitis that appears on the scalp and face can be caused by contact with shampoo, hair dye, hair growth products, cosmetics, medicines, sunscreen, perfume, glasses, hairpins, plants, etc., or by changes in sebum components or secretions due to the environment, sweating, or a lack of vitamin B complex due to an unbalanced diet. There are many cases of seborrheic dermatitis, which develops due to the presence of steroids, and atopic dermatitis, the mechanism of which is not fully understood but which has been suggested to be related to internal factors such as abnormal skin function, constitution, and mental stress, and external factors such as normal skin bacteria, mites, house dust, and humidity (e.g., Non-Patent Document 4). However, washing your face and hair to keep your skin clean can sometimes induce dry skin, leading to xerosis, asteatotic dermatitis, and contact dermatitis (e.g., Non-Patent Documents 1 to 3).

[0004] First, to prevent these, in the case of contact dermatitis, it is common to avoid contact with the causative substance, in the case of seborrheic dermatitis, to wash your face and hair with mild soap and shampoo to keep your scalp and face clean and to lead a regular life, and in the case of atopic dermatitis, mental stress often worsens the symptoms, so it is recommended to try to live a life that does not accumulate mental stress.In addition, since actions to keep the skin clean can induce dry skin, which can cause dermatitis, moisturizing to prevent this is important, and it is recommended to apply moisturizer after washing your face and hair.

[0005] When dermatitis develops, it is important to cool the affected area without scratching, regardless of the type of dermatitis, but it is preferable to continue preventive measures and apply a topical preparation such as an ointment base, cream base, or lotion base depending on the type of dermatitis. In particular, in the case of contact dermatitis, antiallergic drugs are applied, in the case of seborrheic dermatitis, steroid-based topical preparations are applied, in the case of seborrheic dermatitis of the scalp where dandruff occurs, hair washing with a shampoo containing an antifungal drug is performed, and in the case of dry skin due to atopic dermatitis, heparinoid cream is applied.

[0006] However, although dermatitis is not a disease that makes it difficult to maintain one's physical health, it is a difficult and intractable disease to cure completely, for reasons such as the fact that washing one's face and hair, which are preventative measures against dermatitis, can induce dry skin and lead to the onset of dermatitis, and that applying topical medications, which are preventative measures against dermatitis, can also lead to the onset of dermatitis.In addition, the causes of dermatitis vary from person to person and are unclear, so there is no definitive treatment method.

[0007] Incidentally, the inventor of the present invention is engaged in maintenance work such as sharpening and repairing hairdressing tools such as scissors and cuticle nippers used in hairdressing salons. Therefore, he understands the needs of customers who visit hairdressing salons, and recently developed and provided a comb that meets the demands of customers who want to straighten frizzy hair and make it voluminous and smooth (Patent Documents 1 and 2). This comb does not require the use of water, shampoo, permanent agents, heat, etc., and does not damage the hair or scalp. It can straighten frizzy hair without damaging it, making it smooth and voluminous, while also imparting shine and body to the hair. Furthermore, this comb also has the effect of keeping hair clean by removing waste products such as sebum and dandruff, as well as oily hair styling products, adhering to the hair and scalp. In other words, it is a comb with hair cleaning and hair conditioning functions.

[0008] The inventors have recognized that the developed comb has come to be used in many hairdressing salons, and furthermore, that there is a need in hairdressing salons to eliminate scalp and facial dermatitis. In fact, a survey result shows that one in six people have experienced scalp problems, including scalp dermatitis (Non-Patent Document 5). At the same time, a hairdressing salon suggested that the developed comb may have the ability to alleviate dermatitis. That is, they received information that some customers who frequented the salon experienced relief from scalp dermatitis after combing with the developed comb.

[0009] Therefore, the inventor reviewed the characteristics of the comb he had developed and began developing a comb with dermatitis-fighting functions that can suppress the onset and condition of dermatitis that appears on the scalp and face, prevent the onset of dermatitis, and soothe and alleviate dermatitis, without relying on washing the hair with shampoo or applying topical agents. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Patent No. 6711970 [Patent Document 2] Patent No. 6606653 [Patent Document 3] International Publication No. 2020 / 100973 [Non-patent literature]

[0011] [Non-Patent Document 1] Rohto Pharmaceutical Co., Ltd. website, "Explaining the causes and mechanisms of dermatitis (dermatitis)," [online], [Retrieved February 9, 2022], Internet<https: / / jp.rohto.com / learn-more / bodyguide / eczemaknowledge / factor / > [Non-patent document 2] Rohto Pharmaceutical Co., Ltd. website, "Main symptoms and types of dermatitis (dermatitis)", [online], [searched February 9, 2022], Internet<https: / / jp.rohto.com / learn--more / bodyguide / eczemaknowledge / symptom / > [Non-patent document 3] Rohto Pharmaceutical Co., Ltd. website, "How to prevent and alleviate dermatitis (dermatitis)," [online], [searched February 9, 2022], Internet<https: / / jp.rohto.com / learn-more / bodyguide / eczemaknowledge / care / > [Non-patent document 4] Rohto Pharmaceutical Co., Ltd. website, "Explanation of dermatitis seen on the scalp and face," [online], [Retrieved February 9, 2022], Internet<https: / / jp.rohto.com / learn- more / bodyguide / eczemaknowledge / scalpdisease / > [Non-Patent Document 5] Rohto Pharmaceutical Co., Ltd. website, "One in six people have scalp problems!? What are the four causes of scalp dermatitis?", [online], [Retrieved February 9, 2022], Internet<https: / / jp.rohto.com / learn-more / bodyguide / eczemaknowledge / scalprashtrouble / > [Non-patent document 6] Hitachi Metals, Ltd. homepage, "YSS high-quality cutlery steel," [online], [searched February 12, 2022], Internet<https: / / www.hitachi-metals.co.jp / pdf / cat / hy-b10-d.pdf> [Non-Patent Document 7] Hitachi Metals Tool Steel Co., Ltd. website, "YSS Powder High-Speed ​​Tool Steel - High-Performance Powder High-Speed ​​Steel HP Series", Hitachi Metals, Ltd., [online], [Retrieved February 12, 2022], Internet<https: / / www.hitachi-metals-ts.co.jp / pdf / catalog / hap-series.Pdf> [Non-patent document 8] Aichi Steel Corporation website, "Stainless steel," [online], [searched February 12, 2022], Internet<https: / / www.aichi-steel.co.jp / products / pdf / stainless_catalog.pdf> [Non-Patent Document 9] Daido Steel Co., Ltd. website, "Stainless Steel / Daido Steel Types", [online], [Retrieved February 12, 2022], Internet<https: / / www.daido.co.jp / common / pdf / pages / products / stainless / list / daido.pdf> [Non-Patent Document 10] Takefu Special Steel Co., Ltd. website, "Original Cutlery Steel", [online], [Retrieved February 12, 2022], Internet<http: / / www.e-tokko.com / original.php> [Non-Patent Document 11] BOHLER Japan homepage, "Products / Stainless and non-magnetic steels - Ferritic, martensitic, and precipitation hardened stainless steels", [online], [Retrieved February 12, 2022], Internet<https: / / www.bohler.jp / ja / products / n690 / > [Non-Patent Document 12] Tajima Steel Co., Ltd. website, "Product Guide / Free-Cutting Steel / Martensitic Stainless Steel / Chemical Composition Table", [online], [Retrieved February 12, 2022], Internet<https: / / www.tajima-steel.co.jp / pdf / ja_pdf / kai_seibunhyo.pdf> [Non-Patent Document 13] Daido Steel Co., Ltd., "Stainless Steel / JIS Steel Types," [online], [Retrieved February 12, 2022], Internet<https: / / www.daido.co.jp / products / stainless / pdf / jis.pdf> [Non-Patent Document 14] Excel Special Metals Co., Ltd. website, "Product List / Stainless Steel / Martensitic Stainless Steel (SUS420J2, RB-S)", [online], [searched February 12, 2022], Internet<https: / / www.tokkin.co.jp / materials / stainless_steel / martensite> [Non-Patent Document 15] Japonica Co., Ltd. website, "Knife steel", [online], [Retrieved February 12, 2022], Internet<https: / / www.japonika.fr / index.php?main_page=page&id=3&chapter=0> [Non-Patent Document 16] MonotaRO homepage, "Basic course on heat treatment and surface treatment of tools ~ Chapter 1 1-5 Materials used for tools ~", [online], [Retrieved February 20, 2022], Internet<https: / / www.monotaro.com / s / pages / readingseries / kouguhyomensyori_0105 / > [Non-Patent Document 17] Hideo Ihara, "Electronic Structure and Character of Transition Metal Carbides", Applied Physics, Vol. 44, No. 12, pp. 1335-1339, 1975, [online], [Retrieved February 20, 2022], Internet<https: / / www.jstage.jst.go.jp / article / oubutsu1932 / 44 / 12 / 44_12_1335 / _pdf / -char / ja> [Non-Patent Document 18] Masataka Mizuno, "Chemical Bonding States of Metal Carbides, Borides, and Hydrides," Material, Vol. 42, No. 2, pp. 133-535, November 2019, [online], [Retrieved February 20, 2022], Internet<https: / / www.jstage.jst.go.jp / article / materia1994 / 42 / 2 / 42_2_133 / _pdf / -char / ja> [Non-Patent Document 19] Subaru Mogi, Kenta Kuramochi, Ryo Yamazaki, Hiroyuki Miyanaga, Shintaro Sato, Yuki Nozawa, Hirofumi Ariya, "Local structural analysis of MoH-MFI methane aromatization catalytically active species by MoL III-core XANES", Bulletin of the Faculty of Engineering, Saitama Institute of Technology, No. 29, pp. 11-14, 2019, [online], [Retrieved February 22, 2022], Internet <https: / / sit.repo.nii.ac.jp / ?action=pages_view_main&active_action=repository_view_main_item_detail&item_id=287&item_no=1&page_id=13&block_id=31> [Non-Patent Document 20] Takashi Sekine, Akihiro Nino, Yasushi Sugawara, Shigeaki Sugiyama, Hitoshi Taimatsu, "Effect of transition metal carbides (NbC, TaC, WC, ZrC) on the mechanical properties of TiC-SiC composite ceramics", Powder and Powder Metallurgy, Vol. 66, No. 11, pp. 530-535, November 2019, [online], [Retrieved February 22, 2022], Internet<https: / / www.jstage.jst.go.jp / article / jjspm / 66 / 11 / 66_530 / _pdf / -char / ja> [Non-Patent Document 21] Chuhei Oshima, "Surface Properties of Transition Metal Compounds," Applied Physics, Vol. 50, No. 5, pp. 515-522, 1981, [online], [Retrieved February 22, 2022], Internet<https: / / www.jstage.jst.go.jp / article / oubutsu1932 / 50 / 5 / 50_5_515 / _pdf> [Non-Patent Document 22] Shun Aizawa, "Monolayer Graphite", Surface Science, Vol. 11, No. 7, pp. 398-405, 1990, [online], [Retrieved February 22, 2022], Internet<https: / / www.jstage.jst.go.jp / article / jsssj1980 / 11 / 7 / 11_7_398 / _pdf / -char / ja> [Non-Patent Document 23] Aizawa Shun, Ishizawa Yoshio, "Monolayer graphite on transition metal carbide surfaces and its application to field emitters", Carbon, No. 155, pp. 335-346, 1992, [online], [Retrieved February 22, 2022], Internet <https: / / web.archive.org / web / 20181031030747id_ / https: / / www.jstage.jst.go.jp / article / tanso1949 / 1992 / 155 / 1992_155_335 / _pdf> [Non-Patent Document 24] Nagashima, Ayato, Oshima, Tadahira, "Physical properties of low-dimensional carbon systems not due to charge transfer", Surface Science, Vol. 14, No. 8, pp. 486-492, 1993, [online], [Retrieved February 22, 2022], Internet <https: / / dl.ndl.go.jp / view / download / digidepo_8325236_po_14-8-7.pdf?contentNo=1&alternativeNo=> [Non-Patent Document 25] Nora Engineering Co., Ltd. website, "Ferritic stainless steel processed piping", [online], [Retrieved February 19, 2022], Internet<https: / / www.nowla.co.jp / products / ferrite.php#background> [Non-Patent Document 26] Keyence homepage "Introduction to heat treatment ~ Fundamentals of heat treatment ~ Quenching, tempering, annealing, normalizing", [online], [Retrieved February 19, 2022], Internet<https: / / www.keyence.co.jp / ss / products / recorder / heat / basics / type.jsp>

Non-Patent Document 27

Non-Patent Document 28

Non-Patent Document 29

Summary of the Invention

Problems to be Solved by the Invention

[0012] The present invention aims to provide a comb that can cope with the skin, which can suppress the onset and condition of dermatitis that appears on the scalp and face, prevent the onset of dermatitis, and calm and relieve dermatitis, without relying on shampooing or applying external medications. Further, the present invention aims to provide a method of using this comb. Furthermore, the present invention aims to provide a dermatitis countermeasure tool that can more widely utilize this solution means. [[ID=②]]

Means for Solving the Problems

[0013] As a result of the inventor's detailed examination of the composition of the developed comb, it was found that a special stainless steel can suppress the onset and condition of dermatitis, prevent the onset of dermatitis, and calm and relieve dermatitis, leading to the completion of the present invention.

[0014] It should be noted that there seems to be a minor issue with the "②" in the translation of "

課題を解決するための手段

Means for Solving the Problems

[0015] In particular, it is preferable to use carbon steel, special steel (alloy steel), and stainless steel with a limited chemical composition that have magnetism, hardness, and excellent corrosion resistance as the material for the comb, and these effects can be maximized. Specifically, the carbon steel, special steel, and stainless steel shown in Tables 1 and 2 are These are metal materials typically used for blades, have poor formability, and there is no reason to apply them to combs with complex structures and shapes, so it is thought that the idea of ​​using them for combs was not considered (Non-Patent Documents 6 to 15).

[0016] [Table 1]

[0017] [Table 2]

[0018] However, the inventor, whose business involves maintenance such as sharpening and repairing hairdressing tools, such as scissors and cuticle nippers, used in hairdressing salons, and who has recognized women's strong needs for straightening curly hair and achieving smooth, voluminous hair, came up with the idea of ​​applying a metal material used in blades to combs, solved problems with molding, and prototyped a comb made of the metal material used in blades. When the inventor then combed curly hair using the prototype comb, he found that it tended to straighten curly hair and produce smooth, voluminous hair. Subsequently, as described in Patent Documents 1 to 3, the inventor improved the structure and shape of the comb, particularly the shape of the teeth, selected a metal material, and investigated combing methods. Although the scientific basis for the effectiveness of metal materials is unclear, the inventor has invented a comb that achieves the above-mentioned effects and a combing method using the comb.

[0019] Subsequently, as the above-mentioned comb was used by many hairdressers, it was suggested that it may also be able to address the need to eliminate scalp and facial dermatitis in hairdressing salons. Therefore, the inventor reviewed the characteristics of the comb that he had already developed and developed a comb that can suppress the onset and condition of dermatitis that appears on the scalp and face, and can prevent the onset of dermatitis and soothe and alleviate dermatitis, without relying on shampooing or applying topical agents. We began developing a comb that could treat dermatitis.

[0020] Here, we focused on the following features of the developed comb. First, the developed comb is effective in removing waste products such as sebum and dandruff, as well as oily hair styling products, from hair and the scalp. Second, as shown in Tables 1 and 2, the metal materials used for the blades of the developed comb are carbon steel, special steel, and stainless steel that have been heat-treated at high temperatures by quenching, annealing, or other methods. These metals contain a large amount of carbon, and it is generally known that heat treatment causes chemical and structural changes. These chemical and structural changes due to heat treatment create heat resistance and rigidity suitable for machine tools, blades, and the like (Non-Patent Documents 6-15). Third, special steel and stainless steel form a passive chromium oxide film on the surface of the metal material that comes into contact with air, which prevents rust.

[0021] The following is known about the chemical and structural changes that occur during heat treatment (Non-Patent Documents 16-21). Heat treatment at temperatures between 750 and 1,100°C produces a chemical change in which metal carbides are formed, as well as a structural change in which the metal carbides form a spherical island structure. The chemical bonding state of the metal carbides produced by this chemical change is largely unknown due to limitations in analytical technology (Non-Patent Documents 17-19). However, taking Cr steel as an example, as shown in Figure 1, a fine spherical structure of metal carbides is formed, although this structure varies depending on the chemical components and composition of the metal material and the heat treatment conditions. This spherical structure significantly affects the heat resistance and composition of the metal material (Non-Patent Documents 16 and 20). Furthermore, when used as a comb, this spherical structure is thought to be related to the effect of removing waste products such as sebum and dandruff, as well as oily hair styling products, from the hair and scalp.

[0022] Of particular interest is the fact that metal carbides are easily formed on clean metal material surfaces by heat treatment at temperatures exceeding 1,000°C, and that the adsorption of oxygen atoms to the metal carbides and the generation of carbon-oxygen (CO) bonds through reaction have been observed (Non-Patent Document 21). This suggests that metal carbides can adsorb and react with organic substances containing oxygen atoms, i.e., waste products such as sebum and dandruff adhering to hair and scalp, as well as oily hair styling products, and furthermore, can adsorb and react with viruses, bacteria, fungi, and the like that cause dermatitis.

[0023] Furthermore, one possible chemical and structural change caused by heat treatment is the formation of monolayer graphite on clean metal material surfaces, particularly transition metal material surfaces and transition metal carbide surfaces, due to heat treatment in the presence of extremely small amounts of organic substances (Non-Patent Documents 22-24). It is believed that graphene is attached to the metal material surface. Carbon materials, such as activated carbon, carbon fiber, and artificial diamonds, are widely used as adsorbents, structural materials, machine tools, etc. However, carbon materials with regular chemical bonds at the atomic order, such as fullerenes, carbon nanotubes, and graphene, are expected to have size effects and electronic effects, and research into various applications is ongoing. However, their relationship with eczema is of interest.

[0024] On the other hand, chromium oxide, a passive film, is formed on the surface of special steel and stainless steel as shown in Figure 2. It has the ability to self-regenerate, prevents rust formation, and also retains moisture through hydrogen bonding between oxygen and water in chromium oxide (Non-Patent Document 25). This is thought to be closely related to moisturizing, which prevents dry skin that can cause dermatitis.

[0025] Based on this knowledge, we investigated the effect of removing waste products such as sebum and dandruff, and oily hair styling products from hair and scalp, and the relationship between the chemical and structural structure of the carbon steel, special steel, and stainless steel that are the materials used in the developed comb, as well as the passive film. As a result, we found that the generation of metal carbide formed on the surface of metal materials by heat treatment, the generation of its uniform spherical structure, and the generation of chromium oxide, which is a passive film, are responsible for the removal of waste products such as sebum and dandruff that adhere to hair and scalp. We hypothesized that this metal material can be used to treat dermatitis by enhancing the ability to remove waste materials and oily hair styling products, suppressing the onset and condition of dermatitis, preventing the onset of dermatitis, and calming and alleviating dermatitis.

[0026] Based on this hypothesis, when considering the metal materials listed in Tables 1 and 2, first, carbon is suitable. However, carbon steel, which does not form a passive film of chromium dioxide, lacks moisture retention and is therefore ineffective in treating dermatitis. Furthermore, while rust formation is not an essential problem, it can be difficult to use as a tool for treating dermatitis.

[0027] Next, we focused on the presence of Cr, a chemical component that forms the chromium dioxide passive film, and Mo, V, W, and Co, chemical components that easily form metal carbides and uniform spherical metal carbide structures. We conducted an investigation from the perspective that these elements must be present in appropriate amounts. As a result, we determined that low Cr, Mo, V, W, and Co contents resulted in low metal carbide and passive film formation, and that special steels lacked the ability to combat dermatitis. Furthermore, even when Mo, V, W, and Co were present, we determined that the appropriate amount of carbon was present, with V-Silver 3B being too low and HAP40 being too high. This is based on the experimental results of the carbon content described below.

[0028] It was experimentally found that, while the presence of carbon is necessary, there is an optimum amount of carbon present. SUS420J1 and SUS440A have poor ability to remove sebum and other substances, whereas SUS420J2, SUS420F, SUS420F2, and SUS429J1 have high ability to remove sebum and other substances, making them preferable for use in skin irritation treatments. This suggests that the optimum amount of carbon and Cr is important, even in the absence of Mo, V, W, and Co.

[0029] As a result, it was concluded that V Gold 10, Cobalt Special, N690, DSR1K3, SUS420J2, SUS420F, SUS420F2, and SUS429J1, shown in Table 2, are the most suitable metal materials for dermatitis treatment devices. Using stainless steel metal materials with the chemical compositions shown in Table 3, dermatitis treatment devices were completed that have curved surfaces that come into contact with at least the scalp and face without causing damage to them.

[0030] [Table 3]

[0031] In particular, Cr, Mo, and V are known to produce large amounts of hard metal carbides, V to refine the structure, and Co to strengthen the matrix and prevent the metal carbides from falling off (Non-Patent Document 10). SUS420J2 is also known to produce perfectly spheroidized metal carbides (Non-Patent Document 14).

[0032] There are differences in the carbon content between V Gold 10, Cobalt Special, and N690 and DSR1K3, SUS420J2, SUS420F, SUS420F2, and SUS429J1, which is presumably due to the presence of Mo, V, W, and Co, which tend to form metal carbides. In this regard, a comparison of the carbon content of HAP40 and V Silver 3B with that of V10 Gold, Cobalt Special, and N690 shows that there are different appropriate carbon contents when Mo, V, W, and Co are present.

[0033] The metal materials suitable for the dermatitis treatment tools of the present invention shown in Table 3 have a high ability to remove organic chemicals such as sebum from the scalp, and are therefore preferably used in dermatitis treatment tools that require the function of a comb as one form of dermatitis treatment tool.They have an even higher ability to remove waste products such as sebum and dandruff that are attached to the hair and scalp, as well as oily hair styling products, and can suppress the onset and condition of dermatitis, prevent the onset of dermatitis, and soothe and alleviate dermatitis.

[0034] The prerequisite for using stainless steel with the chemical composition shown in Table 3 in a dermatitis treatment tool is heat treatment followed by shaping (Non-Patent Documents 26-28). The heat treatment conditions, which significantly affect the chemical and structural changes of the stainless steel for blades, preferably have a quenching temperature of 1,000-1,100°C, which determines the hardness. As a result, the Rockwell hardness (HRC) is preferably ≥ 58, and more preferably ≥ 60. Heat treatment conditions such as tempering and annealing also affect the structural changes of the stainless steel, but the heat treatment conditions typically used for blades, machine tools, etc. can be applied. In particular, a tempering temperature of 100-200°C and an annealing temperature of 700-900°C are preferred for generating a fine spherical structure of metal carbides, and are suitable for shaping and processing tools for dermatitis treatment tools.

[0035] That is, the present invention provides a dermatitis treatment tool characterized by having a curved surface, comprising a first stainless steel having a chemical composition of C content of 0.95 to 1.15%, Si content of ≦0.50%, Mn content of ≦0.50%, Cr content of 14.50 to 17.50%, Mo content of ≦2.00%, V content of 0.05 to 0.35%, W content of ≦0.30%, and Co content of 1.30 to 3.00%, and / or a second stainless steel having a chemical composition of C content of 0.25 to 0.40%, Si content of ≦1.00%, Mn content of ≦1.25%, P content of ≦0.06%, S content of ≦0.03%, Ni content of ≦0.60%, and Cr content of 12.00 to 17.00%.

[0036] In particular, for stainless steel, the HRC is preferably ≥ 58, and more preferably ≥ 60. For this reason, it is preferable to perform heat treatment at a quenching temperature of 1,000 to 1,100°C, and furthermore, it is preferable to perform heat treatment at a tempering temperature of 100 to 200°C and an annealing temperature of 700 to 900°C.

[0037] The curved surface of the dermatitis treatment tool has a spherical surface to ensure smooth contact with the skin, particularly facial skin which has significant irregularities, and it is preferable that the device has at least one portion molded such that the sum of the interior angles of a triangle connecting three points on the spherical surface is greater than 180° and the spherical curvature is 0.0001 to 1.0000.

[0038] Furthermore, in order to operate the dermatitis treatment tool, the device is characterized by comprising a skin contact portion having a curved surface and a dermatitis treatment function, and an operating portion for operating the skin contact portion.

[0039] Furthermore, it is not necessary to use the above-mentioned special stainless steel for treating dermatitis for the entire device for treating dermatitis, and it is preferable from the viewpoint of cost and molding process that only the skin contact portion be made of the above-mentioned first stainless steel or second stainless steel. The material of the operating portion is not particularly limited, and a wide range of general stainless steels, resins, etc. can be used.

[0040] Furthermore, in order to reduce the weight and cost of the dermatitis treatment tool to improve its operability, it is preferable that at least the skin contact portion of the dermatitis treatment tool be hollow.

[0041] The shape and form of such a tool for treating dermatitis are not particularly limited other than those mentioned above, and it is preferable that the size is also designed appropriately depending on the purpose of use.

[0042] However, the metal material of the dermatitis treatment tool of the present invention can suppress the onset and condition of dermatitis, prevent the onset of dermatitis, and exhibit a dermatitis treatment function of soothing and alleviating dermatitis, and this is due to its high hair cleaning function of removing organic substances such as waste products such as sebum and dandruff adhering to the hair and scalp, as well as oily hair styling products, so it is preferable that the specific form of the dermatitis treatment tool also functions as a comb. By making it a dermatitis treatment tool that also functions as a comb, it is possible to suppress the onset and condition of dermatitis, particularly on the scalp and face, and to prevent the onset of dermatitis. In addition to being able to easily perform operations to prevent, calm, and alleviate hair loss, combing can keep hair clean and prevent hair loss by removing waste products such as sebum and dandruff and organic substances such as oily hair styling products adhering to the hair and scalp, more so than is shown in Patent Documents 1 to 3. Furthermore, as in Patent Documents 1 to 3, it can also impart shine and body to hair, straighten frizzy hair, and exhibit a hair conditioning function that makes hair voluminous and smooth.

[0043] For this purpose, a dermatitis treatment tool with the functions of a comb preferably has the following shape, form, and size: Basically, the dermatitis treatment tool of the present invention with the functions of a comb comprises a body supporting a plurality of teeth, a plurality of teeth vertically arranged in a row at a predetermined interval from the body, comb tips at the tip of the body and formed at a predetermined interval on the tips of the plurality of teeth via shoulders extending from the body, a comb body extending from the body and the teeth, a handle extending from the comb body at an angle in the same direction as the tips of the teeth, and a thumb hole formed at the rear end of the handle, and is characterized by having the material, curved surface, and hardness of the above-mentioned dermatitis treatment tool.

[0044] Furthermore, it is preferable that the dermatitis treatment tool having the function of a comb be the main body, and that the main body and the other end of the ring finger hole and little finger hook of the dermatitis treatment tool operating auxiliary body, which has a movable handle and a ring finger hole and little finger hook formed at one end of the movable handle, be pivotally connected at approximately the center of the comb body of the main body so as to be rotatable through a predetermined angle by a pivot that spans the axis.

[0045] With this shape, the curved body, the back from the body to the comb body, and the shoulders extending from the body can be moved in light contact with various parts of the scalp and face without entangling the comb teeth in the hair, thereby treating scalp and facial dermatitis. At the same time, the back from the body to the comb body can be moved freely in parallel back and forth parallel to the scalp, without or with contact with the scalp, entangling the comb teeth in the hair, and combing can be performed, as a result of which the hair can be given luster and body, curly hair can be straightened, and smooth hair with a sense of volume can be made.

[0046] The structure equipped with the dermatitis treatment tool operating assistant is ergonomically designed to not only keep hair clean for hairdressers who are skilled with scissors by removing waste products such as sebum and dandruff, as well as oily hair styling products, from the hair and scalp without damaging them, but also to give hair shine and body, straighten frizzy hair, and significantly improve operability when combing to make hair voluminous and smooth.

[0047] Furthermore, the entire dermatitis treatment tool having the function of a comb of the present invention may be made of either the first stainless steel or the second stainless steel, but it is preferable that at least the teeth and the connecting portion of the body where the teeth are suspended and have a predetermined width along a mathematical curve connecting the tooth bases are made of the first stainless steel, and that the body, shoulders, comb tips, and back other than the connecting portion are made of at least the second stainless steel. This is because, although there is not a large difference, the first stainless steel is suitable for conditioning hair, and the second stainless steel is suitable for treating dermatitis.

[0048] An important function of a comb is to keep the hair clean by removing waste products such as sebum and dandruff that adhere to the hair and scalp, as well as organic substances such as oily hair styling products, to prevent hair loss and to cleanse the hair to prevent dermatitis. However, it is also important to satisfy the needs of hair that is shiny and strong, straightens frizzy hair, and conditions hair to be smooth and voluminous, so it is preferable that the comb have the following shape.

[0049] The dermatitis treatment tool has a front surface and a back surface, the back surfaces of the plurality of teeth are substantially horizontal, the front surfaces of the plurality of teeth are linearly inclined surfaces or arcuately inclined surfaces, and the inclination angle formed by the linearly inclined surface and the back surface and the inclination angle formed by the tangent of the arcuate inclined surface and the back surface are 5°. It is preferable that the inclination angle is between 0° and 15°, and it is more preferable that the inclination angle is between 3° and 12°. The reason why this is preferable is not clear, but it is thought to be related to the angle at which the teeth and hair come into contact, and it is assumed that a moderate inclination is necessary.

[0050] Furthermore, it is preferable that the tooth tips at the tip portions of the teeth that hang down from the body are further inclined, and that the inclination angle formed by the linear inclined surface and the back surface and the inclination angle formed by the tangent of the arc-shaped inclined surface and the back surface are 6 to 26°, the tooth tip converging surface is formed so that the height of the tooth tip from the back surface is 0.7 to 1.1 mm, and the tooth tip tip surface is shaped so that it cuts at an inclination angle with the back surface of 39 to 79°. It is thought that this shape of the tooth tips entangles and rubs the hair, giving it shine and strength, straightening frizzy hair, and making it smooth and voluminous.

[0051] Furthermore, the shape of the tooth tip is such that a new inclined tooth tip surface is provided on the tooth tip tip surface, the inclination angle with the back surface of the tooth being 36 to 76°, more preferably 50 to 76°, and the tooth tip tip surface is cut from the root side of the tooth tip convergent surface, so that a protrusion having a width of 0.15 to 0.45 mm and a length of 0.15 to 0.45 mm is formed on the tooth tip tip surface, and a groove having a width and depth of 0.05 to 0.45 mm, more preferably 0.05 to 0.24 mm, is provided on the new inclined tooth tip surface, particularly at the point where it intersects with the convergent surface.

[0052] The shape of the tooth tip has been described above, but it is preferable that the inclination angles of the tooth, tooth tip convergent surface, tooth tip tip tip surface, and tooth tip inclined surface and tooth back surface increase in the following order: inclination angle of the tooth, inclination angle of the tooth tip convergent surface, inclination angle of the tooth tip inclined surface, and inclination angle of the tooth tip tip tip surface.

[0053] This tooth tip shape is closely related to the fact that the average diameter of a single hair is 0.05 mm for Westerners and 0.08 mm for Japanese people, and the protrusions and grooves at the tip of the tooth tip are shaped to untangle tangled hair and comb each individual hair. This shape is thought to impart shine and body to hair, straighten frizzy hair, and make it voluminous and smooth. Moreover, this tooth tip shape is also preferable for removing various waste products and oily hair styling products that have adhered to the hair cuticle.

[0054] Furthermore, as for the shape of the dermatitis treatment tool including the comb, it is important that the dermatitis treatment tool has the function of a comb and has the following various shapes and sizes in order to perform hair conditioning and dermatitis treatment operations.

[0055] First, it is preferable that the inclination angle of the handle relative to the straight spine formed by the shoulder, body, and comb body, or the inclination angle of the handle relative to the tangent to the arc-shaped curved spine formed by the shoulder, body, and comb body, is 26° to 46°, the tooth length is 4.0 to 11 mm, the body width is 0.5 to 4.5 mm, the tooth width is 0.7 to 1.1 mm, and the tooth spacing is 0.8 to 1.4 mm. It is particularly preferable that the tooth width is 0.9 to 1.0 mm and the tooth spacing is 1.0 to 1.2 mm.

[0056] Secondly, it is preferable that the connecting line connecting the tooth bases formed by the body and the multiple teeth vertically attached to the body is a straight line or an arc-shaped curve, and the inclination angle formed by this straight line and the multiple teeth inclined toward the comb body, or the inclination angle formed by the tangent to this arc-shaped curve and the multiple teeth inclined toward the comb body, is 75 to 90°.

[0057] Thirdly, it is more preferable that the back formed by the shoulder, body and comb body and the connecting line connecting the body and the tooth base formed by the multiple teeth suspended from the body are arc-shaped curves, and it is more preferable that the curvature of these arc-shaped curves of the back and connecting line is 0.0001 to 0.0008.

[0058] Fourth, it is preferable that the thickness of the tines is 1.5 to 3.0 mm, the width of the tines is 1.0 to 3.0 mm, the length of the tines is 5.0 to 7.0 mm, the curvature of the circular arc curve formed by the side of the tines is 0.21 to 0.40, and the curvature of the circular arc curve formed by the side of the shoulder is 0.08 to 0.21. It is particularly preferable that the thickness of the tines is 2.3 to 2.4 mm, the width of the tines is 1.5 to 2.5 mm, and the length of the tines is 5.5 to 6.5 mm.

[0059] Fifth, it is preferable that the thickness of the comb body is 2.5 to 3.5 mm, the width of the comb body is 7.0 to 17 mm, the length of the comb body is 23 to 33 mm, the thickness of the handle is 3.5 to 4.5 mm, the length of the handle is 21 to 31 mm, and the total length of the teeth hanging down from the tip of the comb point to the comb body is 50 to 70 mm.

[0060] Sixth, in a comb in which the comb body and the comb operation auxiliary body are pivotally connected, it is preferable that the total length is 160 to 170 mm, the length from the tip to the tip of the comb tip is 67 to 77 mm, the length from the tip to the rear end of the handle is 62 to 72 mm, the length from the tip to the center of the thumb hole is 48 to 58 mm, the length from the tip to the rear end of the movable handle is 90 to 100 mm, the length from the tip to the center of the ring finger hole is 60 to 70 mm, the length of the little finger loop is 10 to 20 mm, and the inclination angle of the movable handle relative to the back of the straight line formed by the shoulder, body, and comb body, or the inclination angle of the movable handle relative to the tangent to the back of the arc-shaped curve formed by the shoulder, body, and comb body is 0 to 5°.

[0061] The features of these six shapes are that, when the dermatitis treatment tool of the present invention is used as a comb, it not only untangles tangled hair but also makes it possible to comb each individual hair, imparting shine and strength to the hair, straightening frizzy hair, and making it voluminous and smooth, but also removing various waste products and oily hair styling products that have adhered to the hair cuticle, thereby preventing dermatitis on the scalp.Furthermore, when the dermatitis treatment tool of the present invention is used to treat dermatitis, the dermatitis-treatment-compatible torso, back, and shoulders are characterized in that they can be used to treat dermatitis by smoothly moving over the skin in a massaging manner without damaging the scalp or face.

[0062] Furthermore, the dermatitis treatment tool having the function of a comb of the present invention can also be provided as a type of dermatitis treatment tool characterized by having a simplified shape, a body supporting a plurality of teeth, a plurality of teeth vertically attached to the body with a plurality of tooth bases spaced at predetermined intervals, two shoulders at both ends of the body extending from the body, and a back formed continuously on the body so as to straddle the shoulders.

[0063] Furthermore, the dermatitis treatment tool having the function of a comb of the present invention may integrally comprise a body supporting a plurality of teeth, a plurality of teeth vertically attached to the body with a plurality of tooth bases spaced at predetermined intervals, a shoulder extending from one end of the body to the body, a handle extending from the other end of the body to the body, and a back formed continuously on the body so as to straddle the shoulder and the handle.

[0064] In the case of dermatitis treatment tools having the function of a comb of these shapes, based on the properties of the stainless steel, it is preferable that the multiple teeth and the connecting portion, which is included in the body and has a predetermined width along a mathematical curve connecting the bases of the multiple teeth and where the multiple teeth are suspended, are at least made of the first stainless steel, and that the body, shoulders, and back other than the connecting portion are made of at least the second stainless steel.

[0065] In order to improve the operability of the dermatitis treatment tool having the function of a comb, it is preferable to make the body hollow to reduce its weight.

[0066] In order to maximize the comb function and dermatitis treatment function of this type of dermatitis treatment tool, it is preferable to have the following shape.

[0067] Regarding the location of the teeth, first, it is preferable that some or all of the multiple teeth are curved in an arc shape from the front surface to the back surface of the dermatitis treatment tool, and it is more preferable that the curvature of this curved arc shape be 0.0268 to 0.0667. Second, it is preferable that the spacing between the multiple tooth bases and the spacing between the multiple teeth (the length of the multiple tooth bases) be 0.80 to 10.0 mm. Third, it is preferable that the angle formed by the front surface and the tip of the tooth base with the horizontal plane and the angle formed by the back surface and the tip of the tooth base with the horizontal plane be 70 to 90 degrees. These features of the tooth shape were devised to allow for hair conditioning with the simplest structure when using such a dermatitis treatment tool as a comb.

[0068] Next, overall, it is preferable that the ratio of (maximum length of the plurality of teeth) / (maximum width of the plurality of teeth in the length direction of the body) is 0.20 to 5.00. This is the result of design to achieve a balance between the length of the teeth that function primarily as a comb and enable effective hair conditioning and cleaning by combing, and the length of the body that serves both as an operating part for combing with the teeth and a part that comes into contact with the scalp and facial skin to activate the dermatitis treatment function; anything outside this range will have a negative effect on combing or dermatitis treatment operations.

[0069] The body, which serves both as an operating part for combing and as a part that comes into contact with the scalp and facial skin to activate the dermatitis treatment function, has a surface shape in a cross section cut perpendicular to the plane on which the multiple teeth are arranged, which is an arc-shaped curve that curves in at least one direction perpendicular to the plane on which the multiple teeth are arranged, and the curvature of the arc-shaped curve on the surface of the body is 0.0294 to 0.0590, which is preferable for ease of operation as a comb, smooth contact with the skin, and ability to fulfill the role of the body.

[0070] In particular, the back that functions as an anti-dermatitis function has a cross section in which the vertex of the back is cut in the direction of the surface in which the multiple teeth are arranged, and the shape of the back is an arc-shaped curve with multiple arrangement surfaces that curve in the opposite direction to the multiple teeth, and the curvature of the arc-shaped curve of the multiple arrangement surfaces on the back is 0.0063 to 0.0163, which allows effective contact with the scalp where hair is present and also allows effective contact with the complexly shaped skin of the face, and is preferable for performing dermatitis treatment operations.

[0071] Furthermore, for treating dermatitis, it is more preferable that the tip of such a back has an arc-shaped curve in a plane perpendicular to the surface on which the teeth are arranged, the arc-shaped curve in the plane perpendicular to the surface curved in the opposite direction to the teeth, and the curvature of the arc-shaped curve in the plane perpendicular to the surface at the tip of the back is 0.0004 to 1.0000. This is because forming a wide shape at the tip of the back allows for more effective contact with the scalp where hair is present, enables more effective contact with the complex shape of facial skin, and allows the tip shape of the back to be selected according to the application.

[0072] The materials, shape, form, size, etc. of the dermatitis treatment tool of the present invention have been explained above, but the effectiveness of the dermatitis treatment function and hair conditioning and cleansing functions will vary depending on how the dermatitis treatment tool is used.

[0073] First, the method of using the dermatitis treatment tool without comb function of the present invention is characterized by moving the curved surface of the dermatitis treatment tool, which is expanded with a specific curvature, between the hairline and eyebrows, between the inner and outer corners of the eyes of the upper and lower eyelids, between the tip of the lower jaw and the upper part of the lower jaw, between the corners of the mouth and the nostrils, between the nostrils and ears, and between the anterior neck and the acromion (external cervical triangle), in light contact with the skin so as not to indent it. It is particularly preferable to move the tool repeatedly in one direction. By using the dermatitis treatment tool of the present invention in this manner, dermatitis can be effectively prevented and alleviated.

[0074] On the other hand, the method of using the dermatitis treatment tool with comb functions of the present invention is characterized by the operation for treating dermatitis by lightly touching and moving the tool on any of the torso, back, and shoulders between the hairline and eyebrows, between the inner and outer corners of the upper and lower eyelids, between the tip of the lower jaw and the upper part of the lower jaw, between the corners of the mouth and the nostrils, between the nostrils and ears, and between the anterior neck and the acromion (external cervical triangle) so as not to indent the skin.Similarly, this method of use can effectively prevent and alleviate dermatitis.

[0075] Similarly, a dermatitis treatment tool with comb functions can be used to cleanse and condition hair by facing the surface of the dermatitis treatment tool upward, with the body or back of the tool in contact with the scalp, or by repeatedly moving it back and forth in a parallel direction along the scalp and in the direction of the hair flow, as appropriate. As the hair passes through the teeth of the comb, it untangles tangled hair and combs each individual hair, imparting shine and body to the hair, straightening frizzy hair, and making it voluminous and smooth. It also removes various waste products and oily hair styling products adhering to the hair epidermis, preventing scalp dermatitis. Moreover, because the body or back of the tool comes into contact with the scalp and moves smoothly over the skin like a massage, it can also treat dermatitis without damaging the scalp. [Effects of the Invention]

[0076] The dermatitis treatment device and method of using the same of the present invention can suppress the onset and condition of dermatitis that appears on the scalp and face without relying on shampooing or applying a topical agent, and effectively exhibits a dermatitis treatment function that prevents the onset of dermatitis and soothes and alleviates dermatitis.

[0077] In particular, according to the dermatitis treatment tool and its method of use provided with the comb function of the present invention, combing using the comb portion effectively exerts a hair conditioning function of imparting shine and body to hair, straightening frizzy hair, and making hair voluminous and smooth, without using water, hair wash, permanent agents, heat, etc., and without damaging the hair or scalp, and also exerts a hair cleansing function of removing waste products such as sebum and dandruff, as well as oily hair styling products, adhering to the hair and scalp, keeping the hair clean and preventing hair loss. At the same time, because the portions corresponding to the body and back of the comb come into contact with the scalp when the hair passes through the teeth of the comb and is combed, the comb not only functions as a hair conditioning and hair cleansing tool by combing, but also exerts a dermatitis treatment effect of preventing the onset of scalp dermatitis and soothing and alleviating dermatitis.

[0078] Furthermore, the dermatitis treatment device of the present invention and its method of use can remove waste products such as sebum and dandruff that adhere to the scalp, as well as oily hair styling products, waste products, facial cleansers, and creams that adhere to facial skin, which prevent the skin from coming into contact with oxygen, which is necessary to maintain fresh and elastic skin, and therefore also have the effect of producing and maintaining moist scalp and facial skin.

[0079] This effect is due in large part to the special stainless steel of the dermatitis treatment device of the present invention, but is also amplified by its structure and shape, particularly the comb shape in the case of a dermatitis treatment device having a comb function. [Brief explanation of the drawings]

[0080] [Figure 1] FIG. 1 is a diagram showing an example of a fine spherical structure of metal carbides formed by heat treatment of a metal material in Cr steel. [Figure 2] FIG. 1 is a diagram showing the chemical structure of a chromium oxide passive film formed on the surface of stainless steel or the like. [Figure 3] FIG. 1 is a schematic plan view of a first tool for treating dermatitis according to one embodiment of the present invention, as viewed from the surface. [Figure 4]FIG. 4 is a schematic side view of the first tool for treating dermatitis shown in FIG. 3, viewed from the teeth side, according to one embodiment of the present invention. [Figure 5] FIG. 4 is a schematic side view of the first dermatitis treatment device shown in FIG. 3, viewed from the back, having a dermatitis treatment function, according to one embodiment of the present invention. [Figure 6] FIG. 10 is a schematic plan view of a second tool for treating dermatitis according to one embodiment of the present invention, as viewed from the surface. [Figure 7] FIG. 10 is a schematic plan view of a second tool for treating dermatitis according to one embodiment of the present invention, as viewed from the back side. [Figure 8] FIG. 7 is a schematic side view of the second tool for treating dermatitis shown in FIG. 6 according to one embodiment of the present invention, viewed from the teeth side. [Figure 9] FIG. 7 is a schematic side view of the second dermatitis treatment device shown in FIG. 6, viewed from the back, having a dermatitis treatment function, according to one embodiment of the present invention. [Figure 10] FIG. 7 is a schematic plan view showing dimensions suitable for each part of the second device for treating dermatitis shown in FIG. 6 according to one embodiment of the present invention, as viewed from the surface. [Figure 11] FIG. 10 is a partial schematic plan view showing preferred dimensions of the trunk and back having dermatitis treatment functions, as well as the teeth and tooth bases, of the first and second dermatitis treatment devices according to one embodiment of the present invention, as viewed from the back. [Figure 12] FIG. 1 is a partial plan view showing preferred dimensions for the teeth and eyes, shoulders having dermatitis treatment function, and comb tines of first and second dermatitis treatment devices according to one embodiment of the present invention, as viewed from the back. [Figure 13] FIG. 2 is a partial perspective schematic diagram showing preferred dimensions of the teeth and first tooth tips of the first and second devices for treating dermatitis according to one embodiment of the present invention, as viewed from the front. [Figure 14] FIG. 10 is a schematic plan view of a third tool for treating dermatitis, in which the tips of the teeth of the first and second tools for treating dermatitis are modified, as viewed from the surface, according to one embodiment of the present invention. [Figure 15] FIG. 15 is a partial perspective schematic view seen from the front, showing preferred dimensions of the tips of the teeth provided in the third tool for treating dermatitis shown in FIG. 14. [Figure 16]FIG. 15 is a partial schematic plan view of the third tool for treating dermatitis shown in FIG. 14, viewed from the back side of the tips of the teeth. [Figure 17] 10A, 10B, and 10C are orthographic projection schematic views of a fourth dermatitis treatment device according to one embodiment of the present invention, in which (a) is a front schematic view, (b) is a plan schematic view, and (c) is a left side schematic view. [Figure 18] 10A, 10B, 10C, and 10D are orthographic projection schematic views of a fifth device for treating dermatitis according to one embodiment of the present invention, showing preferred dimensions of the body and teeth having a dermatitis treatment function. [Figure 19] 18, showing an enlarged schematic left side view (A) and an enlarged partial plan view (B), respectively. The figure shows the trunk, back, and back tip, which have a function to combat dermatitis, as well as the curvature and inclination angle of the curve that indicates a shape that is preferable for teeth. [Figure 20] The figure shows the effect of reducing eczema when the fifth dermatitis treatment device according to one embodiment of the present invention was used, and the body, back, and tip of the back, which have dermatitis treatment functions, were lightly touched and moved over the forehead and lower eyelid for 5 minutes every day for one month. [Figure 21] Combing the fifth dermatitis treatment tool according to one embodiment of the present invention, with the surface facing upwards and with or without the torso or back in contact with the scalp, with hair passing through the eyes, by appropriately repeating parallel back and forth movements in all directions along the scalp and movements in the direction of hair flow, has been shown to be effective in removing sebum near the pores. DETAILED DESCRIPTION OF THE INVENTION

[0081] The present invention will be described in more detail below using an embodiment shown in the drawings, but the present invention is not limited to these, and various modifications can be made without departing from the spirit of the present invention, and is limited only by the technical ideas described in the claims. do.

[0082] Fig. 3 shows a schematic plan view of a first dermatitis treatment tool I according to one embodiment of the present invention. A body 1 supports a plurality of teeth 4, with teeth 5 spaced at predetermined intervals on the body 1 and the plurality of teeth 4 arranged vertically in a row. At the tip of the body 1, a shoulder 3 extends from the body 1, and comb points 6 are formed at predetermined intervals on the leading teeth of the plurality of teeth 4. On the opposite side, a comb body 7 extends from the rearmost tooth base 4-1-1 so that the body 1 extends and widens. A handle 8 extends from the comb body 7, inclined in the same direction as the tips 4-2-1 of the teeth 4, and a thumb hole 9 is formed at the rear end of the handle 8.

[0083] The conventional structure known as a comb, which has a body, back, teeth, tooth base, eyes, and shoulders integrated into one unit, is also provided in the body 1, back 2, teeth 4, tooth base 4-1, eyes 5, and shoulders of the dermatitis treatment tool of the present invention shown in Figure 3, but the dermatitis treatment tool of the present invention is characterized by having a comb body 7 formed by extending and expanding the body 1, a handle 8 extending from the comb body 7 at an angle in the direction of the tooth tips 4-2-1 of the teeth 4, and a thumb hole 9 formed in the handle 8. This is because the dermatitis treatment tool of the present invention, when brought into contact with the scalp and facial skin by the torso 1, back 2, and shoulders 3, not only prevents the onset of dermatitis and soothes and alleviates it, but also has a hair conditioning function that gives hair shine and strength, straightens frizzy hair, and makes it voluminous and smooth, and a hair cleaning function that removes waste products such as sebum and dandruff, as well as oily hair styling products, adhering to the hair and scalp, keeping the hair clean, and is designed to improve combing operability in order to achieve a dermatitis prevention function.

[0084] To make the structure of the first dermatitis treatment tool shown in FIG. 3 easier to understand, FIG. 4 and FIG. 5 show schematic side views as viewed from the tooth 4 side and the back 2 side, respectively.

[0085] Fig. 6 shows a schematic plan view of a second dermatitis treatment tool II according to one embodiment of the present invention, as viewed from the front. The dermatitis treatment tool main body 12 has the same structure as the first dermatitis treatment tool I described in Fig. 3, except for the handle 17, and therefore a description thereof will be omitted. The second dermatitis treatment tool II is characterized in that a dermatitis treatment tool manipulation auxiliary member 16, which is integrally provided with a movable handle 13 and a ring finger hole and little finger hook formed at one end of the movable handle 13, is pivotally connected to the dermatitis treatment tool main body 12 at approximately the center of the comb body 7 of the dermatitis treatment tool main body 12 by the handle 17, which spans the shaft, so as to be rotatable through a predetermined angle. The dermatitis treatment tool main body 12 and the dermatitis treatment tool operation auxiliary body 16 are pivotally connected so that the movable handle 13 can be rotated for use. Therefore, the dermatitis treatment tool main body 12 is provided with a cushioning point 10 at the part where the outer edge where the ring finger hole 14 is formed comes into contact with the outer edge where the thumb hole 9 is formed, and is also provided with a contact point 11 which has the same structure as scissors to make it easier for the movable handle 13 to rotate.

[0086] For the second dermatitis treatment device II, in order to make its structure easier to understand, Figures 7, 8, and 9 show a schematic plan view as viewed from the back, a schematic side view as viewed from the tooth 4 side, and a schematic side view as viewed from the back 2 side, respectively.

[0087] The dermatitis treatment tool operating aid 16, which is a feature of the second dermatitis treatment tool II, can stably support the dermatitis treatment tool main body 12 with both the handle 8 and the movable handle 13 when combing with this second dermatitis treatment tool II, thereby significantly improving the operability of the dermatitis treatment tool main body 12 and enabling hairdressers who are accustomed to using scissors to operate it in the same way as they would use scissors.

[0088] In particular, an example of the thickness of a dermatitis treatment tool molded according to the present invention using the second dermatitis treatment tool II is shown in Figure 9. The thickness a of the comb tines 6 is preferably 1.5 to 3.0 mm, more preferably 2.3 to 2.4 mm. The thickness b of the comb body 7 is 2.5 to 3.5 mm, and the thickness of the grip It is preferable that the hand 8 and the movable handle 13 have a thickness of 3.5 to 4.5 mm, and the little finger loop 15 has a thickness of 4.5 to 5.5 mm. These dimensions also apply to the first dermatitis treatment tool I. However, this The dimensions are not limited to these.

[0089] Similarly, an example of the overall length and inclination angle of a dermatitis treatment tool molded according to the present invention using the second dermatitis treatment tool II is shown in Figure 10. As is clear from the figure, it is preferable that the total length e of the second dermatitis treatment tool II is 160 to 170 mm, the length f from the pin 17 to the tip of the comb tines 6 is 67 to 77 mm, the length g from the pin 17 to the rear end of the handle 8 is 62 to 72 mm, the length h from the pin 17 to the center of the thumb hole 9 is 48 to 58 mm, the total length i of the teeth 4 is 50 to 70 mm, the length j of the comb body 7 is 23 to 33 mm, the length k of the handle 8 is 21 to 31 mm, the width l of the comb body 7 is 7 to 17 mm, the length m from the pin 17 to the rear end of the movable handle 13 is 90 to 100 mm, the length n from the pin 17 to the center of the ring finger hole 14 is 60 to 70 mm, and the length o of the little finger loop is 10 to 20 mm. Furthermore, it is preferable that the handle 8 and the movable handle 13 are inclined in the direction of the tip 4-2-1 of the tooth 4 relative to the spine 2. When the spine 2 of the handle 8 is straight, the inclination angle α between the straight line and the handle 8 is preferably 26 to 46°. When the spine 2 is curved in an arc, the inclination angle α between the tangent to the arc and the handle 8 is preferably 0 to 5°. When the spine 2 is straight, the inclination angle β between the straight line and the movable handle 13 is preferably 0 to 5°. In this case, these dimensions also apply to the first tool for treating dermatitis I. However, the present invention is not limited to these dimensions.

[0090] The length and angle of inclination of the entire comb are shown as an example that is preferable for operating a dermatitis treatment tool, but there are individual differences between operators and this is not necessarily limited to this. However, the fact that the handle 8 and the movable handle 13 are inclined toward the tips 4-2-1 of the teeth 4 is a particularly important feature for operating the comb.

[0091] FIG. 11 is a partial plan view, as seen from the back, illustrating an example of preferred dimensions for the body 1, spine 2, teeth 4, and tooth bases 4-1 of a first dermatitis treatment tool I and a second dermatitis treatment tool II according to one embodiment of the present invention. The width q of the body 1 is preferably 0.5 to 4.5 mm, and the length p of the teeth 4 is preferably 4 to 11 mm. The teeth 4 are preferably inclined toward the comb body 7. When the tooth base connecting line 18 connecting the tooth bases 4-1 is a straight line, the inclination angle γ between the tooth 4 and the straight line is optimally 75 to 90°. When the tooth base connecting line 18 connecting the tooth bases 4-1 is an arc-shaped curve, the inclination angle γ between the tooth 4 and the tangent to the arc-shaped curve is optimally 75 to 90°. As shown in FIG. 11, the width q of the body 1 and the length p of the teeth 4 preferably increase continuously from the comb tines 6 to the comb body 7, and the inclination angle γ of the teeth 4 preferably decrease continuously from the comb tines 6 to the comb body 7. Although such a shape allows for effective combing of hair, it is not necessarily limited to this, and any length and angle of inclination may be used within the range of the above dimensions and angle of inclination.

[0092] Although there is no problem if the back 2 and the tooth base connecting line 18 are straight, if they are arc-shaped curves, combing is smoother, the hair is more effectively untangled, and the hair and scalp are not damaged. 18 It is preferable that the curve be an arc-shaped curve with a value of 0.0001 to 0.0008.

[0093] 12 is a partial plan view showing an example of preferred dimensions of the teeth, teeth, shoulders, and comb tips of the first dermatitis treatment tool I and the second dermatitis treatment tool II according to one embodiment of the present invention, as seen from the back. As shown in the figure, the dermatitis treatment tool of the present invention is preferably formed so that the width r of the teeth 4 is 0.7 to 1.1 mm, and the spacing between the teeth 4, i.e., the width s of the teeth 5, is 0.8 to 1.4 mm. However, forming the width r of the teeth 4 to 0.9 to 1.0 mm and the width s of the teeth 5 to 1.0 to 1.2 mm is more preferred in terms of untangling hair, imparting shine and body to the hair, straightening frizzy hair, and making the hair voluminous and smooth. However, this is not limited to this. It is not something that is done.

[0094] Similar to the width r of the teeth 4 and the width s of the teeth, the shape of the comb tines 6 formed at the very tip of the comb from the body 1 through the shoulder 3 is also an important factor in combing. As shown in the figure, the width t1 of the comb tines is preferably 1.0 to 3.0 mm and the length t2 of the comb tines is preferably 5.0 to 7.0 mm, and more preferably 1.5 to 2.5 mm and 5.5 to 6.5 mm. Furthermore, the side 6-1 at the tip of the comb tines 7 and the side 3-1 of the shoulder 3 preferably have arc-shaped curves, with the curvature κ6 of the comb tine side 6-1 optimally being 0.21 to 0.40 and the curvature κ3 of the shoulder side 3-1 optimally being 0.08 to 0.21.

[0095] In particular, the shape of the tip is an important factor in preventing damage to the hair and scalp during combing, rather than in untangling the hair, giving it shine and body, straightening frizzy hair, and making it voluminous and smooth, and in removing waste products such as sebum and dandruff, and oily hair styling products that have adhered to the hair and scalp.

[0096] As mentioned above, we have explained the detailed dimensions of the shape of each part of the comb, but the shapes of the front surface 4-3, side surface 4-4, and back surface 4-5 of the teeth 4, as well as the tooth tips 4-2, also have a significant impact on the function of the dermatitis treatment tool of the present invention as a comb.

[0097] 13 is a partial perspective schematic diagram from the front showing preferred dimensions of the teeth and first tooth tips of the first tool for treating dermatitis I and the second tool for treating dermatitis II according to one embodiment of the present invention. The tooth side surface 4-4 and the tooth back surface 4-5 are preferably substantially flat, with the tooth back surface 4-5 being substantially horizontal and the tooth side surface 4-4 being substantially perpendicular to the tooth back surface 4-5. The tooth front surface 4-3 is preferably a linearly inclined surface or a circularly inclined surface. In the case of a linearly inclined surface, the inclination angle δ between the tooth front surface 4-3 and the tooth back surface 4-5 is preferably 5° to 15°. In the case of a circularly inclined surface, the inclination angle δ between the tangent of the circularly inclined surface and the tooth back surface 4-5 is preferably 5° to 15°.

[0098] The tooth tip 4-2 preferably has a shape such that the tooth surface 4-5 is formed with a first tooth tip convergence surface 4-2-11 having a certain inclination angle, and is cut by the first tooth tip apical surface 4-2-12. The inclination angle ζ between the first tooth tip convergence surface 4-2-11 and the back surface 4-5 is preferably 6 to 26°. The first tooth tip apical surface 4-2-12 is also preferably inclined, and the inclination angle ε between the first tooth tip apical surface 4-2-12 and the back surface 4-5 is preferably 39 to 79°. Furthermore, the first tooth tip apical surface 4-2-12 is preferably substantially square, and the height u of the first tooth tip apical surface 4-2-12 is preferably 0.7 to 1.1 mm. However, the shape of the tooth tip 4-2 of the device for treating dermatitis of the present invention is not limited to these values.

[0099] Figure 14 is a schematic plan view of a third tool for treating dermatitis III according to one embodiment of the present invention, which has second teeth 4-2-2 modified from the teeth of the second tool for treating dermatitis II. Only the teeth of the second tool for treating dermatitis II shown in Figures 6 to 9 have been modified, and all dimensions of the shape other than the teeth are in accordance with Figures 9 to 12.

[0100] Figure 15 is a schematic diagram viewed from the surface, showing preferred dimensions of the second tooth tip 4-2-2 provided in the third tool III for treating dermatitis shown in Figure 14. The shape of the second tooth tip 4-2-2 is such that the second tooth tip convergent surface 4-2-21, the second tooth tip tip tip surface 4-2-22, and the second tooth tip inclined surface 4-2-23 are each formed to be approximately rectangular, as if the first tooth tip convergent surface 4-2-11 shown in Figure 13 had been partially cut away from the start of this convergent surface at an inclination angle η, with part of the first tooth tip tip surface remaining like a tooth tip protrusion. As a result, there is no change in the inclination angle ζ of the second tooth tip convergence surface 4-2-21 and the inclination angle ε of the second tooth tip tip surface 4-2-22, and the width y1 of the tooth tip protrusion body and the length y2 of the tooth tip protrusion body are 0.15 to 0.45 mm, and the tooth tip protrusion body has a wedge-shaped side surface from the approximately square tooth back surface 4-5, Along the side of the tooth tip, a substantially rectangular second tooth tip inclined surface 4-2-23 is formed at an inclination angle η from the beginning of the second tooth tip convergent surface 4-2-21 (the same position as the beginning of the first tooth tip convergent surface 4-2-11) toward the tooth back surface 4-5. This inclination angle η is preferably 36 to 76°, and the magnitude relationship among the inclination angle δ of the tooth front surface to the tooth back surface, the inclination angle ε of the first and second tooth tip tip tip surfaces to the tooth back surface, the inclination angle ζ of the first and second tooth tip convergent surface to the tooth back surface, and the inclination angle η of the second tooth tip inclined surface to the tooth back surface preferably satisfies δ<ζ<η<ε. However, these numerical values ​​are not limited.

[0101] Furthermore, it is more preferable to form a groove 19 at the intersection of the second tooth tip inclined surface 4-2-23 and the second tooth tip convergent surface 4-2-21, and the width and depth x of the groove are preferably 0.05 to 0.45 mm, more preferably 0.05 to 0.24 mm, but are not limited to these.

[0102] Finally, Fig. 16 is a partial schematic plan view of the backside of the second tooth tip provided in the third tool for treating dermatitis III shown in Fig. 14, in order to help understand the shape of the second tooth tip shown in Fig. 15. It can be seen that a tooth tip protrusion protrudes from the second tooth tip.

[0103] In the above detailed description of the structure and shape of the first to third dermatitis treatment tools of the present invention, it has been noted that limiting the dimensions of the shape produces a more favorable effect as a result of combing. However, the material of the dermatitis treatment tool has a greater influence on the dermatitis treatment function, hair conditioning function, and hair cleansing function of the dermatitis treatment tool of the present invention than the shape, form, size, etc., and therefore the dimensions are not necessarily limited to these numerical values.

[0104] The first to third dermatitis treatment devices are made of a second stainless steel having a chemical composition of 0.25 to 0.40% C, ≦1.00% Si, ≦1.25% Mn, ≦0.06% P, ≦0.03% S, ≦0.60% Ni, and 12.00 to 17.00% Cr, which has been quenched at 1,050°C and has an HRC of 61. However, the first stainless steel having a chemical composition of 0.95 to 1.15% C, ≦0.50% Si, ≦0.50% Mn, 14.50 to 17.50% Cr, ≦2.00% Mo, 0.05 to 0.35% V, ≦0.30% W, and 1.30 to 3.00% Co may also be used.

[0105] Although the first to third devices for treating dermatitis have a comb function, they can also be devices for treating dermatitis that have only a dermatitis treatment function without the comb function. Figure 17 is an orthographic projection schematic diagram showing a fourth device for treating dermatitis IV according to one embodiment of the present invention, where (A) is a schematic front view, (B) is a schematic plan view, and (C) is a schematic left side view.

[0106] As is clear from the figure, the fourth dermatitis treatment tool comprises a first dermatitis treatment functional surface 20 that comes into contact with the skin without indenting it and moves in a stroking manner to prevent the onset of dermatitis on the scalp and face and to soothe and alleviate dermatitis, a second dermatitis treatment functional surface 21 that extends from the tip of the first dermatitis treatment functional surface 20 and moves the skin in the same manner as the first dermatitis treatment functional surface, and a grip 22 on the opposite side of the first dermatitis treatment functional surface 20 that is directly connected to the first dermatitis treatment functional surface 20 and allows for operation of the first dermatitis treatment functional surface 20 and the second dermatitis treatment functional surface 21. The first dermatitis treatment surface 20 and the second dermatitis treatment surface 21 are molded and processed to have curved surfaces that come into contact with the skin and are favorable for preventing the onset of dermatitis and calming and alleviating dermatitis, and the curved surfaces are spherical, with the sum of the interior angles of a triangle connecting three points on the spherical surface being greater than 180° and the curvature of the sphere being in the range of 0.0001 to 1.0000. In particular, in order to maintain good contact with the scalp, which is covered with hair, and the face, which has a complex shape, the second dermatitis treatment surface 21 is sharper than the first dermatitis treatment surface 20. It is preferable that the shape is shaped like this.

[0107] Furthermore, the grip 22 for operating the first dermatitis treatment functional surface 20 and the second dermatitis treatment functional surface 21 is shown as a spherical example, but is not limited to a shape as long as it is easy to hold in the hand, and may be shaped like a rod-shaped handle, or may have a recess molded into the grip for the fingers to fit into, etc.

[0108] Although not shown in the drawings, the entire fourth dermatitis treatment tool IV is hollow in order to reduce its weight and improve its operability, which is also preferable from the viewpoint of reducing the cost of expensive stainless steel.

[0109] Meanwhile, the material of the first dermatitis treatment surface 20 and the second dermatitis treatment surface 21 is a second stainless steel having a chemical composition of 0.25-0.40% C, ≦1.00% Si, ≦1.25% Mn, ≦0.06% P, ≦0.03% S, ≦0.60% Ni, and 12.00-17.00% Cr, which is quenched at 1,050°C and has an HRC of 61, but it may also be the first stainless steel. The material of the handle 22 is not particularly limited, and general stainless steel or resin can be used. Here, because the present invention is a dermatitis treatment tool and many customers are sensitive to skin irritation, stainless steel SUS316L, a surgical stainless steel that is non-allergenic, is used (Non-Patent Document 29).

[0110] Furthermore, as a preferred embodiment of the dermatitis treatment tool of the present invention, a fifth dermatitis treatment tool V is shown in Figures 18 and 19, which is the fourth dermatitis treatment tool shown in Figure 17, which is specialized for the dermatitis treatment function, and which also has the function of a comb.

[0111] Figure 18 is an orthographic schematic diagram of a fifth dermatitis treatment tool V, with (A) a front schematic diagram, (B) a plan schematic diagram, (C) a left side schematic diagram, and (D) a bottom schematic diagram, showing the preferred dimensions of the body and teeth that have a dermatitis treatment function. Figure 19 is an enlarged left side schematic diagram (A) and a partial enlarged plan schematic diagram (B) of the fifth dermatitis treatment tool V in Figure 18. The curvature and inclination angle of the curves that indicate the preferred shapes of the body, back, and tip of the back that have a dermatitis treatment function, as well as the teeth, are shown.

[0112] As is clear from Figure 18, the handle 22 of the fourth dermatitis treatment tool IV is formed with teeth 26 and eyes 27 so that it functions as a comb. Accordingly, the fifth dermatitis treatment tool V as a whole can also be classified as a comb, and therefore the first skin treatment surface 20 and the second skin treatment surface 21 in the fourth dermatitis treatment tool IV have been renamed to a dermatitis treatment body 23, a dermatitis treatment back 24, and a dermatitis treatment shoulder 25. In addition to the name change, the designation as the fifth dermatitis treatment tool requires a change in shape to take operability into consideration. In particular, at least one of the shoulders 25 may be a handle extending from the body 23.

[0113] In this case, however, the parts corresponding to the comb, including the body 23, back 24, shoulders 25, teeth 26, and connecting parts 28 between the teeth 26 and body 23, must be made of the first stainless steel or the second stainless steel. Here, all parts are made of the second stainless steel, which is hardened at 1,050°C and has an HRC of 61.

[0114] The fifth dermatitis treatment device V is an extremely simplified version of the shape and form of the first to third dermatitis treatment devices, taking into consideration productivity including moldability, and preferably falls within the ranges of length, angle, and curvature shown in Figures 18 and 19, but is not limited to these.

[0115] The results of an experiment using this fifth dermatitis treatment tool are shown in Figures 20 and 21. Show.

[0116] Figure 20 shows the eczema reduction effect of the fifth dermatitis treatment tool V, which was applied for five minutes daily for one month. The body 23, back 24, and back tip 24-1, each having dermatitis treatment functionality, were lightly moved over the forehead 29 and lower eyelid 30, touching them lightly enough to avoid indenting the skin. For the forehead, the movement was from the space between the eyebrows toward the hairline, and for the lower eyelid, the movement was from the inner corner of the eye toward the outer corner. However, the fifth skin treatment tool was not moved in the opposite direction. This is because moving it in the opposite direction would result in the removal of dermatitis-causing substances and then reattaching them to the skin. Therefore, it is preferable to repeatedly clean the skin contact area after each movement.

[0117] As can be seen, the dermatitis of the forehead 29 and lower eyelid 30, in this case lupus miliaris disseminatus faciei, has subsided.

[0118] Figure 21 shows the effect of combing, in which the surface is facing upward, and with or without the body 23 or back 24 in contact with the scalp, hair 33 is passing through the eyelets 27, and the comb is made by appropriately repeating parallel back and forth movements in all directions along the scalp 34 and movements in the direction of passing the hair 33 through the eyelets 27 to remove sebum 35 near the pores.

[0119] As is clear from the figure, the sebum 35 near the pores is completely removed by combing.

[0120] In order to compare the influence of materials on the dermatitis treatment function and hair cleansing function, the materials of the fifth dermatitis treatment tool were replaced with V Gold 10, N690, SUS420J1, and SUS440A as shown in Table 4, and experiments were conducted in exactly the same manner as in Figures 20 and 21.

[0121] As is clear from Table 4, SUS420J2, V-gold 10, and N690 were found to have effective anti-dermatitis and hair cleansing functions.

[0122] [Table 4]

[0123] Similar studies are planned for the other metal materials shown in Tables 1 to 3, and at least Table 4, but due to time and cost constraints, as well as various circumstances related to the patent system, they have not yet been evaluated. In particular, due to the first-to-file principle in the patent system, we concluded that our hypothesis was correct based on the results for SUS420J1, SUS420J2, and SUS440A, and have therefore filed the application for this invention. [Industrial Applicability]

[0124] The dermatitis treatment tool of the present invention uses stainless steel with a special chemical component to prevent the onset of dermatitis and soothe and alleviate it. It also imparts shine and body to hair, straightens frizzy hair, and makes it voluminous and smooth, while removing oily substances that adhere to the hair and scalp. Therefore, it can be used not only as a tool for treating dermatitis in pets, but also as the hair-implanting part or grip part of a brush. It can also be used as a tool for treating dermatitis not only on the scalp and face, but also on various parts of the body.

[0125] Furthermore, the dermatitis treatment device of the present invention, based on its function of removing various organic chemicals, also has the effect of increasing the supply of oxygen to the skin, which is necessary for fresh and elastic skin, and maintaining and producing moisturized skin. Therefore, it can also be used as a skin aging prevention device that improves the insufficient supply of oxygen to the skin, which is thought to be the cause of skin aging.

[0126] Furthermore, because it is a material that can prevent the onset of dermatitis and soothe and alleviate it, it is thought to be less irritating to the skin than SUS316L, which is surgical stainless steel, and can be used in ornaments such as necklaces, bracelets, and rings, as well as massage tools, and is thought to have a wide range of industrial applicability. [Explanation of symbols]

[0127] I: First skin irritation treatment tool II: Second Dermatitis Treatment Tool III: The third tool for treating dermatitis IV: The fourth dermatitis treatment tool V: The fifth dermatitis treatment tool 1: Body with dermatitis treatment function 2: Back with dermatitis treatment function 3: Shoulder with dermatitis treatment function 3-1 Shoulder side with dermatitis prevention function 4: Teeth 4-1: Tooth base 4-1-1: Rearmost tooth base 4-2: Tooth tip 4-2-1: First tooth tip 4-2-11: First tooth tip convergence surface 4-2-12: First tooth tip surface 4-2-2: Second tooth tip 4-2-21: Second tooth tip convergence surface 4-2-22: Second tooth tip surface 4-2-23: Second tooth tip inclination surface 4-3: Tooth surface 4-4: Tooth side 4-5: Back of teeth 5: Eyes 6: Comb tip 6-1: Comb tip side 7: Comb body 8: Handle 9: Thumb hole 10:Buffer point 11: Touch point 12: Dermatitis treatment equipment body 13:Moving handle 14:Ring finger hole 15: Pinky hook 16: Dermatitis treatment tool operation aid 17: Kaname 18: Tooth root connection line 19: Groove a: Thickness of the comb tip b: Thickness of the comb c: seeding thickness d: Thickness of the little finger loop e: Total length f: Length from the base to the tip of the comb g: Length from the tip to the rear end of the handle h: Length from the tip to the center of the thumb hole i: Total length of tooth j: length of the comb k: Handle length l: width of comb m: Length from the tip to the rear end of the movable handle n: Length from the tip to the center of the ring finger hole о:Length of the little finger loop p: tooth length q: width of the body r: tooth width S: Eye width t1: width of the comb tip t2: length of comb tip u: Tooth tip height x: width and depth of the groove on the second tooth tip inclined surface y1: width of tooth tip protrusion y2: length of tooth tip protrusion α: Inclination angle of the handle relative to the back tangent β: Inclination angle of the movable handle when closed relative to the back tangent γ: Tooth inclination angle relative to the tangent of the tooth root line δ: Inclination angle of the tooth surface relative to the tooth back surface ε: Inclination angle of the first and second tooth tip surfaces relative to the tooth back surface ζ: Inclination angle of the first and second tooth tip convergent surfaces relative to the tooth back surface η: Inclination angle of the second tooth tip inclination surface relative to the tooth back surface κ2: dorsal curvature κ 18 : Curvature of tooth root line κ3: Shoulder side curvature κ6: Curvature of the apex side 20: First dermatitis treatment function 21: Second dermatitis treatment function 22: Sushi 23: Body with dermatitis treatment function 24: Back with dermatitis treatment function 24-1: Tip of the spine with dermatitis treatment function 25: Shoulder with dermatitis treatment function 26: Teeth 26-1: Tooth base 26-2: Tooth tip 26-2-1: Tooth tip surface 26-3: Tooth surface 26-4: Back of teeth 26-5: Curved surface of teeth 26-6: Teeth on both ends 27: Eyes 28:Connection part 29: Forehead 30: Lower eyelid 31: Eczema (facial disseminated miliary lupus) 32: Calmed eczema 33: Hair 34: Scalp 35: Sebum A: Tooth root spacing B: Tooth root length C: Maximum tooth length D: Maximum width of the body teeth in the longitudinal direction θ: Angle formed by the surface of the tooth tip and the horizontal plane at the tip of the tooth λ: The angle formed by the back surface of the tooth tip and the tip of the tooth with the horizontal plane κ23: Curvature of the arc-shaped curve of the trunk surface with dermatitis prevention function κ24: Curvature of the dorsal arc with dermatitis-fighting function κ24-1: Curvature of the dorsal tip arc with dermatitis-fighting function κ26: Curvature of the circular arc of the tooth

Claims

1. A method for manufacturing a dermatitis treatment tool, comprising: a skin contact part made of stainless steel having a C content of 0.26 to 0.40%, a Si content of ≦1.00%, a Mn content of ≦1.00%, a P content of ≦0.04%, a S content of ≦0.03%, a Ni content of ≦0.60%, and a Cr content of 12.00 to 14.00%, and an operating part for operating the skin contact part, The stainless steel is a quenching process in which heat treatment is carried out at a temperature range of 1,000 to 1,100°C; A tempering process in which heat treatment is performed at a temperature in the range of 100 to 200 ° C.; The method for producing a skin irritation treatment tool is obtained by a heat treatment process including an annealing process in which heat treatment is performed in a temperature range of 700 to 900°C, and the skin irritation treatment tool has a Rockwell hardness (HRC) of 58 or more.

2. 2. The method for manufacturing a dermatitis treatment tool according to claim 1, wherein the skin contact portion has a curved surface with a curvature of 0.0001 to 1.0000.

3. 2. The method for manufacturing a dermatitis treatment tool according to claim 1, wherein the dermatitis treatment tool is a comb.

Images