Hair iron

Abstract

[Problem] The objective of the present invention is to provide a hair iron capable of reducing hair damage. [Solution] The hair iron of the present invention is a hair iron having a first arm and a second arm connected in a manner that can be opened and closed, a first clamping surface installed on the inner side of the first arm, a second clamping surface installed on the inner side of the second arm, and a heating part for heating hair installed on the first and second clamping surfaces, wherein the heating part is characterized by having a layer made of at least platinum.

Description

Technology Field

[0001] The present invention relates to a hair iron, and in particular, to a hair iron capable of reducing hair damage. Background Technology

[0002] Generally, hair irons are used for styling procedures such as magic straightening, blow drying, and hair treatments. In such a hair iron, one end of a pair of arm members is rotatably connected, and a heating element and a heating element are formed facing each other on the other ends of the two arm members. With hair inserted into the heated heating element and heating element, the entire hair can be heated and styled by sliding the hair iron toward the ends of the hair.

[0003] For example, a hair styling device (1) is known that includes a handheld treatment unit (2) as a hair iron, wherein the handheld treatment unit (2) has two arms (3, 4), the two arms (3, 4) are configured to form a clamp having two surfaces (5, 6) facing each other, and also enable a handful of hair to be clamped, and the handheld treatment unit includes a means (7) for diffusing steam, and the means (7) for diffusing steam is configured to diffuse steam from a first surface (5) among the two surfaces to a second surface (6) among the two surfaces, wherein one of the arms (3, 4) has a comb (19) located upstream or downstream of one of the surfaces (5, 6) of the arms (3, 4) (Patent Document 1). Prior art literature

[0004] Japanese Special Report No. 2017-515590 The problem to be solved

[0005] However, in the prior art including the above-mentioned patent document 1, the thickness of the arm is set thicker in order to increase the heat capacity, and in such cases, there is a problem that the overall size becomes larger and the weight increases.

[0006] In addition, prior to using a hair iron, various chemicals, such as oxidizing agents and reducing agents, are sometimes used, including hair coloring, hair treatment, and bleaching treatments.

[0007] In such cases, once the original purpose of oxidizing or reducing agents has been achieved, they actually cause damage to the hair. Although attempts have been made to mitigate hair damage by using products that cause minimal damage or avoiding prolonged use, these efforts have not always been sufficient.

[0008] For example, hydrogen peroxide used in bleaching agents can provide good coloring, but it had the problem of damaging the hair by acting on and breaking down keratin, the main component of hair.

[0009] Furthermore, conventional technology is often intended for straightening curly hair, and does not consider the application of permanent waves through curl setting. Moreover, regarding the aforementioned curl setting, if the adhesion between the arms is good, it is possible to perform the treatment more appropriately.

[0010] Accordingly, the objective of the present invention is to provide a hair iron capable of improving the adhesion between the arms. means of solving the problem

[0011] To achieve the above objective, the inventors carefully examined hair irons and came to discover the present invention.

[0012] That is, the hair iron of the present invention comprises a first arm and a second arm connected in an openable and closable manner, and

[0013] A first clamping surface installed on the inner side of the first arm, and,

[0014] A second clamping surface installed on the inner side of the second arm, and

[0015] A hair iron having a heating element for heating hair installed on the first and second narrow surfaces, wherein the heating element is characterized by having a layer made of at least platinum.

[0016] In addition, in a preferred embodiment of the hair iron of the present invention, the heating part is characterized by further having a layer made of at least one of nickel, copper, electroless nickel, or aluminum.

[0017] In addition, in a preferred embodiment of the hair iron of the present invention, the thickness of the platinum layer is characterized to be 0.05 to 1.0 μm.

[0018] In addition, in a preferred embodiment of the hair iron of the present invention, the surface of the heating part is characterized by being buffed.

[0019] In addition, a preferred embodiment of the hair iron of the present invention is characterized by having a hydrogen peroxide reduction device in the first and / or second arm.

[0020] In addition, in a preferred embodiment of the hair iron of the present invention, the first and / or second arm is further equipped with a temperature control device.

[0021] In addition, in a preferred embodiment of the hair iron of the present invention, the hydrogen peroxide reduction device is characterized by reducing hydrogen peroxide by setting the temperature.

[0022] In addition, in a preferred embodiment of the hair iron of the present invention, the temperature is characterized as being 80°C or higher.

[0023] In addition, in a preferred embodiment of the hair iron of the present invention, the temperature is characterized as being 140℃ to 180℃.

[0024] In addition, a preferred embodiment of the hair iron of the present invention is characterized by further having a connecting member that connects the first arm and the second arm.

[0025] In addition, in a preferred embodiment of the hair iron of the present invention, the hydrogen peroxide reduction device and the temperature control device are characterized as being integrated.

[0026] In addition, in a preferred embodiment of the hair iron of the present invention, the first and / or second arm is characterized by having a switch for the hydrogen peroxide reduction device and the temperature control device.

[0027] In addition, in a preferred embodiment of the hair iron of the present invention, the connecting member is characterized as being one or more.

[0028] In addition, in a preferred embodiment of the hair iron of the present invention, the first and / or second arm is characterized by having a supporting part that supports the clamping surface and elastically adjusts the clamping state between the clamping surfaces.

[0029] In addition, in a preferred embodiment of the hair iron of the present invention, the first and / or second arms are characterized by having a core material embedded along the longitudinal direction.

[0030] In addition, in a preferred embodiment of the hair iron of the present invention, the core material is characterized by having a stopper portion that engages with the clamping surface to restrict movement in the protruding direction relative to the first and / or second arm.

[0031] In addition, in a preferred embodiment of the hair iron of the present invention, at least one end edge in the hair insertion direction of the heating part is characterized by having a curl-forming surface curved in the thickness direction of the heating part.

[0032] In addition, in a preferred embodiment of the hair iron of the present invention, the tip of the first arm and / or the second arm in the hair insertion direction has a curved surface.

[0033] In addition, a preferred embodiment of the hair iron of the present invention is characterized by further having a curl-forming surface and / or a plane continuous with said surface. Effects of the invention

[0034] According to the hair iron of the present invention, it is possible to provide a hair iron capable of improving the adhesion between the arms, which has an advantageous effect. Furthermore, according to another aspect of the present invention, the hair iron has an advantageous effect of reducing hair damage.

[0035] In addition, according to the hair iron of the present invention, when the gripping portion of the middle part of the gripping arm is gripped and operated, the base side rotates relative to each other and the tip side can perform a gripping operation, and by this gripping operation, the hair can be gripped and corrected by the gripping surface (also called a correction body) positioned oppositely to the tip side of the gripping arm.

[0036] In addition, the hair iron of the present invention has the advantageous effect of enabling sufficient curl setting by ensuring that the hair sufficiently contacts the curved surface forming the curl when setting the curl. Brief explanation of the drawing

[0037] [Fig. 1] Fig. 1 is a diagram showing the effect of a hair iron in one embodiment of the present invention. Although it is difficult to see in the diagram, the bar graph is displayed in the order of hair ends, middle, and roots from left to right. [Fig. 2] Fig. 2 is a drawing showing a hair iron in one embodiment of the present invention. [Fig. 3] Fig. 3 is a top view of a hair iron in one embodiment of the present invention. [Fig. 4] Fig. 4 is a drawing showing the inverted state of Fig. 5 of a hair iron in one embodiment of the present invention (the rear side state before assembly). [Fig. 5] Fig. 5 is a drawing showing the bottom view of a hair iron in one embodiment of the present invention. [Fig. 6] Fig. 6 is a drawing showing the inverted state of Fig. 3 of a hair iron in one embodiment of the present invention (the rear side state before assembly). [Fig. 7] Fig. 7 shows a hair iron in one embodiment of the present invention. [Fig. 8] Fig. 8 shows a perspective view of the case portion of the upper part of the main body for upper and lower assembly of a hair iron in one embodiment of the present invention. The plate and core material constituting the heating part, etc. are illustrated in the image. [Fig. 9] Fig. 9 shows a side view of the case portion of the upper part of the main body for upper and lower assembly of a hair iron in one embodiment of the present invention. The plate and core material constituting the heating part, etc. are illustrated in the image. [Fig. 10] Fig. 10 shows a perspective view of the case portion of the lower part of the main body for upper and lower assembly of a hair iron in one embodiment of the present invention. The plate and core material constituting the heating part, etc. are illustrated in the image. [Fig. 11] Fig. 11 shows a side view of the case portion of the lower part of the main body for upper and lower assembly of a hair iron in one embodiment of the present invention. The plate and core material constituting the heating part, etc. are illustrated in the image. [Fig. 12] Fig. 12 schematically illustrates the configuration from the heating part, etc. to the sub-part of a hair iron in one embodiment of the present invention. Fig. 12 (a) shows a perspective view of a plate, Fig. 12 (b) shows a plate and a member within the plate, Fig. 12 (c) shows a cross-sectional view of a plate and a member within the plate, and Fig. 12 (d) shows an example of the configuration of a member within the plate. Specific details for implementing the invention

[0038] The hair iron of the present invention comprises a first arm and a second arm connected in an openable and closable manner, and

[0039] A first clamping surface installed on the inner side of the first arm, and

[0040] A second clamping surface installed on the inner side of the second arm, and

[0041] A hair iron having a heating element for heating hair installed on the first and second clamping surfaces, wherein the heating element is characterized by having a layer made of at least platinum. In the present invention, the first arm and the second arm may be connected in a manner that allows for opening and closing, and are not particularly limited. In the present invention, it is possible to insert hair using the first clamping surface installed on the inner side of the first arm and the second clamping surface installed on the inner side of the second arm. Hair can be treated through both clamping surfaces by means of the heating element for heating hair installed on the first and second clamping surfaces.

[0042] In addition, in a preferred embodiment of the hair iron of the present invention, the heating part is characterized by further having a layer composed of at least one of nickel, copper, electroless nickel, or aluminum, in order to improve adhesion with platinum. In the heating part, the platinum on the outermost surface can come into direct contact with the hair. Regarding the order of the layers, there is a concern that adhesion may be insufficient with aluminum and platinum alone, so adhesion can be improved by inserting nickel, copper, or nickel in between. Furthermore, since there is a concern that adhesion may be insufficient with combinations of aluminum and copper, or platinum and copper, it is preferable to arrange them in the order of platinum, nickel, copper, electroless nickel, and aluminum when using all materials.

[0043] And, as shown in FIG. 12 described below, strictly speaking, the heating part may be composed of a plate and may have a heating source, such as a ceramic heater, in the layer below the plate. As described below, these heating parts (plates) may be shaped as shown in FIG. 12, for example.

[0044] In addition, in a preferred embodiment of the hair iron of the present invention, the thickness of the platinum layer is characterized to be 0.05 to 1.0 μm from the perspective of cost reduction and improved adhesion. That is, if it is outside this range, there is a risk that the edges may bulge and there is a risk that the adhesion between the plates may be insufficient.

[0045] In addition, in a preferred embodiment, the thickness of the nickel layer is preferably 1 to 20 μm, more preferably 5 to 10 μm. In addition, in a preferred embodiment, the thickness of the copper layer is preferably 1 to 10 μm, more preferably 2 to 5 μm. In addition, in a preferred embodiment, the thickness of the electroless nickel layer is preferably 1 to 10 μm, more preferably 3 to 5 μm. In addition, in a preferred embodiment, the thickness of the aluminum layer is preferably 0.1 to 10 μm, more preferably 1 to 3 μm.

[0046] In addition, in a preferred embodiment of the hair iron of the present invention, the surface of the heating part is characterized by being buff-polished. For example, by making the surface of the aluminum plate constituting the heating part smoother by buff-polishing it, the layer applied thereon, for example, a platinum layer It becomes possible to eliminate non-uniformity. Furthermore, by buffing in this way, it becomes possible to improve the adhesion when plates plated up to the platinum layer are joined together. Additionally, deburring may be performed on the four corners of the plates.

[0047] In addition, in a preferred embodiment of the hair iron of the present invention, the first and / or second arm is provided with a hydrogen peroxide reduction device. By doing so, in the present invention, it becomes possible to efficiently remove excess hydrogen peroxide, for example, as hydrogen peroxide used in a bleaching agent, and furthermore, to minimize damage to the hair. The hydrogen peroxide reduction device may be installed on the arm, and the location is not particularly limited. In a preferred embodiment, from the perspective of avoiding a narrow surface that is expected to become hot by the heating part, it may be installed at any one location extending from the center of the arm to the handle side of the arm.

[0048] In addition, in a preferred embodiment of the hair iron of the present invention, the hydrogen peroxide reduction device is characterized by reducing hydrogen peroxide by setting a temperature. In a preferred embodiment of the hair iron of the present invention, the temperature is characterized as being 80°C or higher from the perspective that hydrogen peroxide begins to be reduced. In addition, in a preferred embodiment of the hair iron of the present invention, the temperature is characterized as being 140°C to 180°C from the perspective of reducing hydrogen peroxide more efficiently.

[0049] In addition, in a preferred embodiment of the hair iron of the present invention, the first and / or second arm is further equipped with a temperature control device. The temperature setting device may be installed on the arm, and the location is not particularly limited. In a preferred embodiment, from the viewpoint of avoiding a narrow surface that is expected to become hot by the heating part, it may be installed at any one location extending from the center of the arm to the handle side of the arm.

[0050] In some cases, a temperature control device is installed in the middle of the power cord coming out of the hair iron body, but in this case, it is necessary to pull the cord to operate it when turning the power on and off. On the other hand, in the present invention, a hydrogen peroxide reduction device and a temperature control device are installed inside the arm, and as described below, if a switch function is installed inside the arm, it is possible to turn the power on and off while holding the hair iron in the right hand, and if it is a dial-type control mechanism, hydrogen peroxide control and temperature control can be easily adjusted by turning the dial with the thumb, thus improving operability.

[0051] In addition, a preferred embodiment of the hair iron of the present invention is characterized by further having a connecting member that connects the first arm and the second arm. By means of the connecting member connecting the two arms, it is possible to achieve the function of suppressing shaking of the tip portion of the iron (i.e., left-right shaking when viewed from the tip of the iron). Specifically, it becomes possible to ensure that the plate surface aligns without misalignment when the iron is pressed. Furthermore, in a preferred embodiment of the hair iron of the present invention, the connecting member is characterized as being one or more members from the perspective of operability.

[0052] In addition, in a preferred embodiment of the hair iron of the present invention, the hydrogen peroxide reduction device and the temperature control device are characterized as being integrated in terms of operability. Furthermore, in a preferred embodiment of the hair iron of the present invention, the first and / or second arm is characterized by having a switch for the hydrogen peroxide reduction device and the temperature control device. As previously mentioned, the temperature control device may be installed in the middle of the power cord coming out of the hair iron body, but in this case, it is necessary to pull the cord to operate it when turning the power on or off. On the other hand, in the present invention, the hydrogen peroxide reduction device and the temperature control device are installed inside the arm, and a switch can also be provided, so it is possible to improve operability.

[0053] Additionally, bleaching treatment may be performed before applying a hair iron. The purpose of bleaching is to soften the hair using an alkaline agent. The main components of bleach are hydrogen peroxide and ammonia (alkaline substances). Ammonia acts on the cuticles on the surface of the hair, causing it to swell and soften. Hydrogen peroxide then penetrates into the interior of this swollen and softened hair and chemically reacts with melanin. When black hair is bleached, it changes color over time, progressing from reddish-brown to a reddish-orange, then to a yellowish-orange, and finally to yellow. This is largely due to the fact that the dark brown "eumelanin" breaks down, while the reddish-orange "pheomelanin" is difficult to break down.

[0054] However, it is not only melanin that is oxidized by hydrogen peroxide. In other words, it breaks down keratin, the main component of hair, and has the potential to damage the hair.

[0055] In the present invention, damage to the hair can be minimized by removing the hydrogen peroxide early.

[0056] In addition, in a preferred embodiment of the hair iron of the present invention, the first and / or second arm is characterized by having a clamping portion that clamps the clamping surface and elastically adjusts the clamping state between the clamping surfaces. When the clamping portion in the middle of the first and / or second arm is grasped and operated, the base side of the first and / or second arm rotates relative to each other, and the tip side of the first and / or second arm (also referred to as the first and / or second clamping arm) can perform a clamping operation. Through this clamping operation, hair can be clamped and corrected by the clamping surface (clamping surface) positioned oppositely to the tip side of the arm.

[0057] In addition, at least one of the clamping surfaces may be movably supported on the clamping arm so that it can move back and forth relative to the other side, and a clamping member may be installed on the clamping arm to clamp the clamping surfaces and elastically adjust the clamping state between the clamping surfaces. By doing so, the hair can be securely clamped by the clamping surfaces. Furthermore, the clamping member is not particularly limited and, for example, a coil spring, a leaf spring, a spring, rubber, etc., may be used. Also, regarding the clamping member, for example, a spring, the spring pressing the bimetal type temperature fuse may be separated from the magnetic fixing leaf spring to increase the holding force. By doing so, it becomes possible to detect the transmission of temperature with better precision.

[0058] In addition, in a preferred embodiment of the hair iron of the present invention, the first and / or second arm is characterized by having a core material embedded along the longitudinal direction.

[0059] In addition, a core material is embedded along the longitudinal direction from the tip of the arm to at least the gripping portion, and the core material maintains hardness up to a temperature higher than that of the clamping arm, thereby preventing easy deformation caused by heat on the tip of the clamping arm when heat is generated by the heating portion of the clamping surface. Accordingly, by gripping the gripping portion of the clamping arm, force can be smoothly transmitted from the tip of the clamping arm to the clamping surface, and the hair can be firmly clamped and corrected.

[0060] Therefore, by making the clamping arm thinner so that the heat capacity is reduced, the clamping correction of the hair can be performed reliably, and by aiming for overall weight reduction, it becomes easy to continuously straighten fine curls for a certain period of time by gripping the clamping arm and working freely.

[0061] In addition, a receiving portion capable of supporting the said sub-part may be partially installed on the core material, facing the back of the said sub-part. By doing so, the clamping reaction force caused by the clamping surface can be received by the receiving portion through the sub-part, and the hair can be clamped more reliably by the mutual clamping surfaces.

[0062] In addition, since the above-mentioned receiving part can be installed partially, its shape is less likely to be affected by the curved shape of the clasped arm side, and thus the receiving part can be easily placed on the back of the sub-part.

[0063] In addition, in a preferred embodiment of the hair iron of the present invention, the core material is characterized by having a stopper portion that engages the clamping surface to restrict movement in the protruding direction relative to the first and / or second arm. That is, the movement of the clamping surface relative to the clamping arm in the protruding direction can be restricted by engaging it with the stopper portion. Accordingly, by restricting the rattling of the clamping surface relative to the clamping arm, the clamping correction of the hair by the clamping surfaces can be performed more accurately.

[0064] In addition, in a preferred embodiment, the clamping arm may be made divisible. That is, the arm may be formed as an assembly structure in which the corresponding divided parts are joined together by a fastener, and the core material may be pre-attached to one of the divided parts by a temporary fixing part installed at one end in the longitudinal direction. Therefore, when the divided parts are aligned and joined together by a fastener, there is no need to handle the core material individually, and the connection can be made by simultaneously fastening a predetermined part of the core material to the clamping arm by a simultaneous fastening part along with the connection of the divided parts. Therefore, since there is no need to handle the core material individually when joining the divided parts, it is possible to easily assemble the clamping arm.

[0065] In addition, in a preferred embodiment of the hair iron of the present invention, with respect to performing curl setting, at least one end edge of the heating part in the hair insertion direction has a curl-forming curved surface curved in the thickness direction of the heating part. The clamping surface may have mutually opposing heating parts, and a curl-forming curved surface curved in the thickness direction of the corresponding heating part may be installed on at least one end edge of the heating part in the hair insertion direction. It is also possible to install a curved surface for winding hair and / or a flat winding surface on at least one end edge of the hair insertion direction on the tip side of the clamping arm.

[0066] It is also possible to have the hair wrapped around the curl-forming curved surface extend linearly from the said curl-forming curved surface and come into contact with the curved or flat surface of the said wrapping surface. By doing so, when performing curl setting, the hair comes into sufficient contact with the curl-forming curved surface, thereby enabling more sufficient curl setting.

[0067] In addition, tension is applied to the hair by winding the clamp arm, and when attempting to push the hair onto a curved surface for curl formation, the hair can be easily slid on the curved surface or flat winding surface on the clamp arm side. Therefore, the tension applied to the hair by winding can be efficiently utilized for pushing onto the curved surface for curl formation, and a more sufficient curl setting can be achieved.

[0068] In addition, in a preferred embodiment of the hair iron of the present invention, in the view that different curl settings are performed, the first arm and / or the second arm is characterized by having a curved surface on the tip side of the hair insertion direction.

[0069] In the present invention, the clamping surface is provided with a heating portion having mutually opposing straightening surfaces, and in addition to the fact that a curl-forming surface curved in the thickness direction of the heating portion can be installed on both sides of the end edge in the hair insertion direction of the heating portion, a curved surface or a flat winding surface for winding the hair can be installed on both sides of the end edge in the hair insertion direction of the clamping arm tip side.

[0070] Thus, since the degree of winding of the hair with respect to the two curl-forming curved surfaces is changed, it is possible to easily perform curl settings with different deformations.

[0071] In addition, in a preferred embodiment of the hair iron of the present invention, in order to accurately correct the hair and accurately set the curl, it is also characterized by having a curl-forming curved surface and / or a plane continuous with said curved surface.

[0072] In the present invention, at least one of the clamping surfaces is supported on the clamping arm so that it can move back and forth relative to the other side, and a clamping member may be installed on the clamping arm to push the clamping surface forward and clamp, thereby elastically adjusting the clamping state between the clamping surfaces. In addition, when the clamping surface is withdrawn, the hair wrapped around the curl-forming curved surface is configured to have the curl-forming curved surface and / or a plane continuous with the curved surface; that is, it is configured to extend linearly from the curl-forming curved surface and come into contact with the curved surface or plane of the wrapping surface. Thus, the hair can be accurately clamped and corrected by the clamping surfaces that are positioned oppositely and can move back and forth, and the curl setting can also be accurately performed.

[0073] In addition, in the present invention, the winding surface has a plane perpendicular to the narrowing surface (correction surface), and since the plane of the winding surface and the curl-forming curved surface are close to each other in the direction of hair insertion, the tension applied to the hair by winding can be directly utilized as a pressure force on the curl-forming curved surface by sliding the plane of the winding surface, thereby making curl setting more reliable and easier.

[0074] In addition, the plate, arm, cord, temperature control, magnet, etc., of the present invention may be improved or modified. For example, the plate plating thickness may be modified to improve compatibility during hair styling. Also, a stopper for preventing lateral misalignment of the arm may be installed from the perspective of preventing lateral misalignment. Additionally, an AC cord may be installed from the perspective of preventing wire breakage. Furthermore, it is possible to apply a coating (three layers) from the perspective of preventing peeling, chemical resistance, and color matching. In addition, a magnet may be used in the configuration between the sub-part and the plate from the perspective of heat resistance and magnetic force.

[0075] In addition, temperature control can be performed to reduce the time required to reach the set temperature. A reinforcing plate shape may also be adopted to address strength requirements.

[0076] Furthermore, mechanically, a platinum plate, heat-dissipating silicone, a ceramic heater, a mica plate, a heat-resistant magnet, a magnet fixing bracket, and a plate fixing bracket are present within the upper and lower cases of the hair iron body, and for control purposes, a thermistor, a bimetallic temperature fuse, a PCB unit, etc., may be provided. Moreover, various interactions occur with various molecules, such as water molecules, due to magnetism, temperature, or platinum components, and through complex differential effects, it is possible to create a more favorable and effective condition.

[0077] <Example>

[0078] In the following, embodiments using the hair iron of the present invention are described, but the present invention is not to be interpreted as being limited to the following embodiments.

[0079] <Example 1>

[0080] FIG. 2 shows a hair iron according to one embodiment of the present invention. In the drawing, reference numeral 1 represents a first arm, reference numeral 2 represents a second arm, reference numeral 3 represents a first clamping surface, reference numeral 4 represents a second clamping surface, reference numeral 5 represents a hydrogen peroxide reduction device, reference numeral 6 represents a temperature control device, reference numeral 7 represents a connecting member, reference numeral 8 represents a connecting member, and reference numeral 9 represents a switch. A brief description of the case in which an ironing operation is performed with this hair iron is as follows. A power plug is inserted into an outlet, and the clamping surfaces (3, 4) are heated by a heater (heating source). Hair is clamped into the clamping surfaces (3, 4) by the clamping operation of the first and second arms, and additionally, by heating by the heating unit, a hair ironing operation can be performed on the clamped hair along the processing surface of the clamping surfaces (3, 4). In this example, the hydrogen peroxide reduction device (5) is installed inside the arm, and the switch (9) function is also installed inside the arm. Therefore, it is possible to turn the power on and off while holding the hair iron in the right hand. In addition, in this example, the hydrogen peroxide reduction device (5) and the temperature control device (6) are integrated and have a dial-type control function. Therefore, since the hydrogen peroxide control and temperature control can be easily controlled by turning the dial with the thumb, it is possible to improve operability. In addition, the temperature control of the hydrogen peroxide reduction device (5) and the temperature control device (6), etc., is not limited to a dial type and can be performed by a push button, lever, etc., and is not particularly limited.

[0081] In addition, as a hair iron equipped with a "hydrogen peroxide removal" mode, it is also possible to set a "hydrogen peroxide removal" mode on the dial of the iron and set it to 150°C.

[0082] FIG. 3 is a top view of a hair iron in one embodiment of the present invention. In the drawings, reference numeral 33 represents one side of the tip side (29, 31), reference numeral 35 represents one side of the gripping part (21, 23), reference numeral 37 represents an inclined surface of both sides (33, 35), and reference numeral 39 represents the other side of the tip side (29, 31).

[0083] FIG. 4 is a drawing showing the inverted state of FIG. 5 of a hair iron in one embodiment of the present invention (the rear side state before assembly).

[0084] FIG. 5 is a drawing showing a bottom view of a hair iron in one embodiment of the present invention. In the drawings, reference numeral 33 represents one side of the tip side (29, 31), reference numeral 35 represents one side of the gripping part (21, 23), reference numeral 37 represents an inclined surface of both sides (33, 35), and reference numeral 39 represents the other side of the tip side (29, 31).

[0085] FIG. 6 is a drawing showing the inverted state of FIG. 3 of a hair iron in one embodiment of the present invention (the rear side state before assembly).

[0086] In addition, FIG. 7 shows a hair iron in one embodiment of the present invention. In the drawings, reference numeral 3 represents a first clamping surface, reference numeral 4 represents a second clamping surface, reference numerals 15 and 17 represent base sides, reference numeral 19 represents a rotation axis, reference numerals 21 and 23 represent a gripping part, reference numerals 25 and 27 represent a reverse point part, and reference numerals 29 and 31 represent tip sides, respectively.

[0087] FIG. 8 is a perspective view of the case portion of the upper part of the main body for upper and lower assembly of a hair iron in one embodiment of the present invention. The plate and core material constituting the heating part, etc. are illustrated in images. In the drawings, reference numeral 50 represents the core material, and reference numeral 51 represents the plate, etc.

[0088] FIG. 9 shows a side view of the case portion of the upper part of the main body for upper and lower assembly of a hair iron in one embodiment of the present invention. The plate and core material constituting the heating part, etc. are illustrated in the image. In the drawings, reference numeral 50 represents the core material, and reference numeral 51 represents the plate, etc.

[0089] FIG. 10 is a perspective view of the case portion of the lower part of the main body for upper and lower assembly of a hair iron in one embodiment of the present invention. A plate and a core material constituting a heating part, etc. are illustrated in the image. In the drawings, reference numeral 50 represents the core material, and reference numeral 51 represents the plate, etc.

[0090] FIG. 11 shows a side view of the case portion of the lower part of the main body for upper and lower assembly of a hair iron in one embodiment of the present invention. The plate and core material constituting the heating part, etc. are illustrated in the image. In the drawings, reference numeral 50 represents the core material, and reference numeral 51 represents the plate, etc.

[0091] FIG. 12 schematically illustrates the configuration from the heating part, etc., to the sub-part of a hair iron in one embodiment of the present invention. In the drawings, reference numeral 60 represents a plate, reference numeral 61 represents a ceramic heater (heating source), reference numeral 62 represents a mica plate, reference numeral 63 represents a bimetal, reference numeral 64 represents a bimetal retainer, reference numeral 65 represents a plate spring for fixing a magnet, reference numeral 66 represents a plate spring for the plate (sub-part), and reference numeral 67 represents a magnet. FIG. 12(a) shows a perspective view of a plate, FIG. 12(b) shows a plate and a member within the plate, FIG. 12(c) shows a cross-sectional view of a plate and a member within the plate, and FIG. 12(d) shows an example of the configuration of a member within the plate. The plate is formed using an aluminum base as shown in FIG. 12(a), and furthermore, it can be plated, for example, in the order of electroless nickel, copper, nickel, and platinum. As shown in FIG. 12(b), a ceramic heater (heating source) (61), a mica plate (62), a bimetal (63), a bimetal retainer (64), a plate spring for fixing a magnet (65), a plate spring (sub-part) for the plate (66), and a magnet (67) can be arranged within the plate, for example, as in FIG. 12(d). As illustrated, by changing the spring and separating the spring pressing the bimetal type temperature fuse from the magnet fixing plate spring, it becomes possible to further improve the holding force. In addition, with these configurations, it is also possible to detect the transfer of temperature more precisely.

[0092] As shown in these drawings, the hair iron is equipped with an iron body to which a power cord is connected. Additionally, the power cord may be equipped with a temperature control device, a power plug, etc.

[0093] Next, an embodiment of a hair iron having a buche, a core, a stopper, etc. will be described.

[0094] The above iron body is equipped with a pair of clamping arms and a pair of clamping surfaces (3, 4). The clamping arms are made of a resin, such as a polyester-based engineering plastic with a linear expansion coefficient of 8.8 × 10⁻⁵ cm / cm / ℃, for example, and the base sides (15, 17) can be rotatably connected to each other by a rotation axis (19). A gripping portion (21, 23) is installed in the middle of each clamping arm. This gripping portion (21, 23) is formed relatively thick as shown in FIG. 7 to make it easy to grip, and can be made approximately the same thickness as the base sides (15, 17).

[0095] In the gripping portion (21, 23), a pivot portion (25, 27) formed as an inclined surface is installed on the tip side. This pivot portion (25, 27) is designed to allow the thumb or index finger to apply force when gripping the gripping portion (21, 23). When viewed from the side of FIG. 7, the pivot portion (25, 27) is formed to be slightly larger than the entire gripping portion (21, 23), making it easy to place the thumb or index finger on it.

[0096] As shown in FIG. 7, the tip side (29, 31) of the above-mentioned clamping arm is formed to be thinner than the gripping portion (21, 23) in a mutually aligning direction. Additionally, as shown in FIG. 3, the tip side (29, 31) is formed to be thinner than the gripping portion (21, 23) and is set to be positioned offset to one side relative to the gripping portion (21, 23). Accordingly, one side (33) of the tip side (29, 31) protrudes to one side compared to one side (35) of the gripping portion (21, 23), and both sides (33, 35) are set stepwise as inclined surfaces (37). The other side (39) of the tip side (29, 31) is formed offset to one side in alignment with the one side (33) and is recessed into the center of the gripping portion (21, 23).

[0097] These clamping arms are formed in a hollow shape, and can be assembled into a combined structure by installing separate parts from the center. These separate parts can be mutually fastened and joined by fasteners, such as screws, at the tip side (29, 31), gripping part (21, 23), and base side (15, 17). Although not shown, a fastening hole may be formed through the separate parts at the tip side (29, 31).

[0098] In the above-mentioned hollow gripping portions (21, 23), a plurality of reinforcing ribs may be installed, although not shown. On one of the gripping arms, a convex portion may be installed on the opposite side of both arms, and on the other gripping arm, a concave portion into which the convex portion is fitted may be installed. The convex portion may be made to contact the bottom surface of the concave portion to perform a stopper function.

[0099] In this way, the above-mentioned clamping arm is configured such that the base side (15, 17) is rotatably coupled to each other, and the tip side (29, 31) performs a clamping action by operating the middle gripping part (21, 23).

[0100] And, in the following description, since the tip side (29, 31) of the narrow arm has a symmetrical shape, the tip side (29) is described, and the other tip side (31) is described by referring to the description of the tip side (29).

[0101] The tip side (29) may be provided with a flat vertical wall surface and a flat bottom wall surface that accommodate a core material inside. Additionally, a pinch surface support hole may be formed in the tip side (29) to movably support the pinch surface (3) so that it can move back and forth relative to the other side. The pinch surface (3) may be movably supported in the pinch surface support hole.

[0102] Accordingly, the above-mentioned clamping surface (3, 4) is positioned opposite to the tip side (29, 31) of the above-mentioned clamping arm, and is configured to correct clamping while heating the hair through the clamping action of the above-mentioned clamping arm.

[0103] The above-mentioned clamping surface (3) is composed of, in order, a heating part, a ceramic heater, a magnet plate, a first spring, and a second spring when viewed from the side of the above-mentioned clamping surface. A receiving part is integrally installed on the heating part, and the ceramic heater, the magnet plate, and the first spring can be accommodated in the receiving part. In addition, the heating part and the arm can be fixed by pressing the receiving part in the direction of the hair contact surface by the first spring and the second spring.

[0104] The heating element is formed into a rectangular plate shape when viewed from the opposite side using a lightweight material with high thermal conductivity, such as aluminum, and its surface is coated with fluorine.

[0105] In addition, convex portions may be installed on the upper and lower walls of the receiving portion to restrict the protruding movement of the heating portion beyond a certain level.

[0106] The ceramic heater has a rectangular plate shape, generates heat up to a maximum temperature of about 180°, conducts heat to the heating part, and is electrically connected to the power cord side.

[0107] The above magnet plate is formed into a rectangular plate shape by a neodymium magnet of 15,000 Gauss, etc., and is arranged so that the S poles face each other on both narrow surfaces (3, 4).

[0108] In this sun, one of the supporting parts is a first spring, and the first spring is formed as a plate spring, and the magnet plate is supported in the direction of the back of the heating part within the receiving part to bring the ceramic heater into close contact with the back of the heating part and also stably support the magnet plate.

[0109] As another supporting part, a second spring may be provided. The second spring is supported at the rear end of the receiving part, and this second spring forms a supporting part that supports the clamping surfaces (3, 4) and elastically adjusts the clamping state between the clamping surfaces (3, 4). In the case of dividing, the second spring is formed as a plate spring, and both ends of the plate spring are set at an angle, and the end edges can be hooked onto the protrusion on the side of the dividing part in the left-right direction (length direction).

[0110] In the above tip side (29, 31), a core material is further accommodated. This core material is formed in a symmetrical shape, and one side of the core material is described, and regarding the other side of the core material, the description is omitted by referring to the one side of the core material.

[0111] The above core material is embedded along the longitudinal direction from the tip side (29) of the above-mentioned clamping arm to at least the above-mentioned gripping part (21). However, it is also possible to configure the core material to be embedded along the entire length side (15) from the tip side (29) of the above-mentioned clamping arm.

[0112] The core material can maintain hardness up to a temperature higher than that of the clamping arm and control thermal deformation of the clamping arm. Accordingly, in this embodiment, the core material is formed of stainless steel and is formed of a material having a coefficient of linear expansion smaller than that of the resin material of the clamping arm. However, the core material only needs to have a coefficient of linear expansion smaller than that of the clamping arm and may be formed of titanium, ceramic, super engineering plastic, etc.

[0113] The above core material may have simultaneous fastening parts integrally installed at both ends of the sheet-type base portion. These simultaneous fastening parts can be fastened together with the combined fastening of the divided portions. A hole is formed in the simultaneous fastening part for inserting a screw, which is a fastening tool, and a hole is formed in the simultaneous fastening part likewise. A temporary fixing part may be installed at the end of the simultaneous fastening part. This temporary fixing part is installed at one end in the longitudinal direction of the core material and is intended to be coupled to the divided portion in advance. This temporary fixing part has a positioning hole formed therein that is fitted into a positioning pin protruding toward the divided portion. Additionally, a hole is formed in the temporary fixing part for inserting a screw, which is a fastening tool for temporary fixing.

[0114] A vertical wall is installed along one edge of the base portion of the above-mentioned sheet type. The vertical wall serves as a stopper portion of the clamping surface (3). Another vertical wall is installed along the other edge of the base portion, the simultaneous fastening portion, and the other edge of the temporary fixing portion.

[0115] In the case of a sun that enables a hair iron to be divided, first and second fastening walls may be further protruded and installed on the vertical wall. The first and second fastening walls may be installed near the center of the vertical wall, which has a U-shaped cross-section. These first and second fastening walls are fastened and fixed to the divided portion of the arm. Additionally, the first fastening wall is located between the two ends of the second spring. That is, the first fastening wall may form a receiving portion capable of supporting the second spring, facing the back portion of the second spring which is a supporting portion.

[0116] Next, we will explain how to use the aforementioned hair iron to straighten curly hair or correct artificial permanent waves. It goes without saying that it is also possible to create permanent waves using the hair iron.

[0117] First, when using the above hair iron, a liquid solution is applied to the hair, which is a first agent, that is, an aqueous solution with a mercapto compound (reducing agent) such as thioglycolic acid or cysteine ​​as the main ingredient, to which basic substances such as ammonia, monoethanolamine, and triethanolamine are added to adjust the pH to 6 to 10. Through this application, the disulfide bonds of cystine contained in the keratin protein in the hair are reduced and broken into mercapto groups. After that, the hair is washed with water and dried sequentially with a hair dryer, and then the hair is straightened by a hair iron (1) heated to 140 to 180°C.

[0118] Specifically, the gripping portion (21, 23) of the clamping arm is grasped, and force is applied, such as by placing the thumb and index finger on the reverse portion (25, 27), to insert the hair between the heating portions of the clamping surface (3, 4). Then, while maintaining that state, the clamping arm is slid toward the end of the hair. As a result, the hair inserted between the heating portions heated by the ceramic heater is heated and straightened.

[0119] At this time, as the hair moves at a predetermined speed between magnet plates with the S poles replaced, reduction energy is generated according to Fleming's right-hand rule. This energy is generated from the S pole of the magnet plate, where the electrons of the magnetic poles rotate right-handedly, and promotes the reduction action of the first solution. Furthermore, it also acts to close the cuticles that form the surface layer of the hair. When the cuticles are closed, they block ultraviolet rays from entering the hair, thereby preventing the hair from being damaged by ultraviolet rays.

[0120] In addition, due to this reduction energy, the clusters of the first liquid, water, become smaller. As these clusters become smaller, the penetration of the first liquid into the hair increases. Consequently, the reduction action of the first liquid is further promoted. As a result, the treatment time, which carries the risk of hair damage, can be shortened, and hair damage can also be suppressed.

[0121] Then, a second solution consisting of an aqueous solution of an oxidizing agent such as sodium bromate or hydrogen peroxide is applied to the hair, and as a result, the mercapto group is oxidized to create new disulfide bonds in the hair, and this straight hair state can be fixed.

[0122] When correcting the hair in this way, the heat from the ceramic heater is also conducted to the tip side (29, 31) of the hair clamp arm, and the hardness of the tip side (29, 31) of the hair clamp arm is reduced, making it prone to deformation.

[0123] Therefore, without a core material, there is a risk that the tip side (29, 31) of the clamping arm may easily deform due to the reaction force applied to it during the hair clamping operation between the heating parts, and that the hair clamping by the heating parts cannot be performed evenly. In this regard, this problem can be improved by installing a core material.

[0124] That is, the core material is embedded from the tip side (29, 31) to at least the gripping part (21, 23), and the gripping part (21, 23) side maintains a temperature state such that it can be gripped by a person's hand compared to the tip side (29, 31), and the core material can be firmly supported on the gripping part (21, 23) side.

[0125] And, by positioning the simultaneous fastening side of the firmly supported core material within the inverse point (25, 27) of the gripping part (21, 23), force can be accurately transmitted from the inverse point (25, 27) to the core material.

[0126] By accurately transmitting force to this core material, the clamping surface (3, 4) is supported by the core material, thereby preventing easy deformation of the tip side (29, 31). Therefore, the heating parts can be accurately positioned to clamp the hair, allowing the above procedure to be performed accurately.

[0127] In addition, in this embodiment, the clamping surfaces (3, 4) are clamped by the second spring portion, which is a clamping part, so that the clamping state between the clamping surfaces (3, 4) is elastically adjusted, thereby allowing the above procedure to be performed more accurately.

[0128] The movement of the above-mentioned clamping surface (3, 4) in the protruding direction can be regulated by a vertical wall portion (installed in the core material) acting as a stopper portion, and the rattling of the clamping surface (3, 4) can be suppressed, and the precise forward and backward movement of the clamping surface (3, 4) by the buoyancy of the second spring portion can be maintained for a long time, and the precise clamping state of the heating portion can also be accurately maintained.

[0129] The second fastening wall portion serving as the receiving portion can receive the second spring portion by bringing both ends into contact with the distribution portion of the second spring, which is the sub-part, and can accurately apply the reaction force of the second spring portion to the heating portion.

[0130] Therefore, the mutual clamping state of the clamping surfaces (3, 4) by the second spring can be accurately maintained regardless of the temperature rise of the tip side (29, 31). Furthermore, since the first fastening wall portion as a receiving portion is partially installed in the core material, even if the clamping arm tapers from the gripping portion (21, 23) toward the tip side (29, 31), it can be formed without being affected by this shape. The base portion of the core material can be placed on the flat bottom wall surface of the tip side (29, 31) (the flat portion corresponding to the bottom edge in the cross-section of the tip side (29, 31) which is approximately trapezoidal) and can be arranged straight and without difficulty toward the gripping portion (21, 23).

[0131] In addition, the present invention is not limited to the above embodiments. For example, it is possible to make one or both sides of the clamping surface (3, 4) fixed so that they cannot move relative to the tip side (29, 31). It is also possible to omit the magnet plate and the first spring. It is also possible to omit the vertical wall portion of the core material, the first fastening wall portion, etc.

[0132] Next, a sun in an example of a hair iron having a curl surface, a curved surface, and a plane continuous with said curved surface will be described.

[0133] In this case, the following effects are achieved. That is, tension is applied to the hair by wrapping the clamp arm, and when attempting to push the hair onto a curved surface for curl formation, the hair can be easily slid along the curved surface of the clamp arm. Therefore, the tension applied to the hair by wrapping can be efficiently utilized for pushing onto the curved surface for curl formation, and sufficient curl setting can be achieved.

[0134] In addition, in another sun, a curl-forming curved surface is installed on both sides of the hair insertion direction end edge of the heating plate, and the curved surface is installed on both sides of the hair insertion direction end edge of the tip of the clamping arm, and one side of the back surface of the heating plate is positioned opposite the curved surface of the tip of the clamping arm, so that the degree of curling of the hair with respect to both curl-forming curved surfaces can be changed, thereby making it easy to perform curl setting with different deformations.

[0135] In addition, in another aspect, at least one of the correction bodies is supported on the clamping arm so that it can move back and forth relative to the other side, and a clamping means is installed to clamp the correction body on the clamping arm to elastically adjust the clamping state between the correction bodies, and a plane continuous with the curved surface is installed on the tip side of the clamping arm, so that when the correction body is withdrawn, the hair wrapped around the curl-forming curved surface can be extended linearly from the curl-forming curved surface and come into contact with the curved surface or the plane, so that the hair can be accurately clamped and corrected by the opposing and retractable correction bodies, and the curl setting can also be accurately performed.

[0136] In addition, in another case, a plane continuous with the curved surface, etc., is orthogonal to the correction surface, and since the plane and the curl-forming curved surface are close in the direction of hair insertion, the tension applied to the hair by winding can be directly utilized as a pressure force on the curl-forming curved surface by sliding the curved surface or the plane, thereby making curl setting more reliable and easier.

[0137] For other configurations, refer to the description of the hair iron mentioned above. Below, the description will focus on curved surfaces, etc. Additionally, although the tip sides are represented by drawing numbers 29 and 31, since both tip sides (29 and 31) have a rounded, approximately trapezoidal shape with a cross-section that is roughly symmetrical, for convenience, the description will be made using one tip side (29).

[0138] A flat correction surface is installed in the heating portion of the narrow surface (3). However, this correction surface is not limited to a flat surface and can be set in various ways, such as a curved surface or an S-curve surface. Also, a correction surface identical to the correction surface is formed on the narrow surface (4) and faces each other.

[0139] In the heating part, on both sides of the end edge in the hair insertion direction (in FIG. 7, the end edge from the front direction of the ground to the back direction), a curl-forming surface is installed that is curved in the thickness direction of the heating part (upward and downward direction in FIG. 7). The curl-forming surface is formed over the entire thickness direction of the heating part and has a quarter arc.

[0140] On both sides of the hair insertion direction end edge of the above-mentioned clamping arm tip side (29), the above-mentioned two sides (the cross-section of the tip part (29) in the direction perpendicular to the length direction can be a rounded, approximately trapezoidal shape, and the upper and lower sides of the said rounded, approximately trapezoidal shape, and also the heating part side) are each separately installed as a curved or flat winding surface for winding hair. That is, the upper side of the said rounded, approximately trapezoidal shape can be the curved winding surface for winding hair, and the lower side can be the flat winding surface for winding hair, and the opposite can also be true. The curl-forming curved surface can be formed at both ends of the heating part (clamping surface (3)), while the winding surface can be formed at both ends of the clamping arm tip side (29). By the relationship between the above-mentioned curl-forming curved surface and the winding surface, the degree of winding of hair for both curl-forming curved surfaces is changed, and it is made easy to perform curl setting with different deformations. That is, it is possible to use two surfaces of different curvatures by means of the curl-forming curved surface at the end of the heating section and the winding surface on the tip of the arm (29).

[0141] The above-mentioned winding surface has a curve that is curved in the same direction as the above-mentioned curl-forming surface. The curve of the lower side portion of the rounded, approximately trapezoidal shape (where the length of the lower side portion is longer than the length of the upper side portion) is formed by an arc with a radius larger than that of the curve of the upper side portion.

[0142] The winding surface of the rounded, roughly trapezoidal lower edge portion likewise has a flat plane continuous with the curved surface of the lower edge portion of the hair insertion direction end edge of the aforementioned narrow arm tip side (29). This flat plane is formed to be orthogonal to the straightening surface. The winding surface flat plane of the lower edge portion and the curl-forming curved surface of the lower edge portion are close to each other in the hair insertion direction. The winding surface of the lower edge portion has a winding curved surface continuous with the flat plane on the opposite side of the straightening surface.

[0143] Meanwhile, the winding surface of the upper edge portion of the rounded, approximately trapezoidal shape likewise has a winding guide surface as a curved surface with a larger radius of curvature, continuous with the curved surface of the upper edge portion of the hair insertion direction end edge of the aforementioned clamping arm tip side (29) (the cross-section is approximately trapezoidal in shape because the cross-section consists of a flat surface and a curved surface, and the corner portion is a curved surface).

[0144] The above-mentioned clamping surface (3) is supported so as to be able to move back and forth as described above and is supported by a second spring, so when the clamping surface (3) is withdrawn, the hair wrapped around the curl-forming curved surface of either the upper or lower side extends linearly from the corresponding curl-forming curved surfaces on both sides and comes into contact with the curved surface of the corresponding winding surface. On the winding surface side, the linearly extended hair may be set to come into contact with the flat surface.

[0145] In addition, according to the above configuration, a curl-forming surface curved in the thickness direction of the heating part is installed at least one end edge of the hair insertion direction of the heating part, and a winding surface having a curved surface or flat surface for winding the hair is installed at at least one end edge of the hair insertion direction of the tip of the clamping arm (29), and the hair wound on the curl-forming surface is configured to extend straight from the curl-forming surface and come into contact with the curved surface or flat surface of the winding surface.

[0146] In addition, when the above-mentioned narrow surface (3) is withdrawn, the hair wrapped around the curl-forming curved surface of the lower edge portion is configured to extend straight from the corresponding curl-forming curved surface of the lower edge portion and come into contact with the curved surface or flat surface of the above-mentioned wrapping surface of the lower edge portion.

[0147] Next, we will explain the case of straightening curly hair or correcting artificial permanent waves using the above-mentioned hair iron.

[0148] First, when using the above hair iron, a liquid solution is first applied to the hair, which is prepared by adding basic substances such as ammonia, monoethanolamine, and triethanolamine to an aqueous solution containing a mercapto compound (reducing agent) such as thioglycolic acid or cysteine, and adjusting the pH to 6 to 10. Through this application, the disulfide bonds of cystine contained in the keratin protein in the hair are reduced and broken into mercapto groups. Afterward, the hair is washed with water and dried sequentially with a hair dryer, and then straightened using a hair iron heated to 140 to 180°C.

[0149] Specifically, the gripping portion (21, 23) of the clamping arm is grasped, and force is applied, such as by placing the thumb and index finger on the reverse portion (25, 27), to insert the hair between the heating portions of the clamping surface (3, 4). Then, the clamping arm is slid along the end of the hair while maintaining that state. As a result, the hair inserted between the heating portions, which are heated by the ceramic heater, is heated and straightened.

[0150] At this time, as the hair moves at a predetermined speed between magnet plates with the S poles replaced, reduction energy is generated according to Fleming's right-hand rule. This energy is generated at the S pole of the magnet plate where the electrons of the magnetic poles rotate right-handed, and promotes the reduction action of the first solution. Furthermore, it also acts to close the cuticle forming the surface layer of the hair. When the cuticle is closed, it blocks ultraviolet rays from entering the hair, thereby preventing the hair from being damaged by ultraviolet rays.

[0151] In addition, due to this reduction energy, the clusters of the first liquid, water, become smaller. As these clusters become smaller, the penetration of the first liquid into the hair increases. Consequently, the reduction action of the first liquid is further promoted. As a result, the treatment time, which carries the risk of hair damage, can be shortened, and hair damage can also be suppressed.

[0152] Then, a second solution consisting of an aqueous solution of an oxidizing agent such as sodium bromate or hydrogen peroxide is applied to the hair, and as a result, the mercapto group is oxidized to create new disulfide bonds in the hair, and this straight hair state can be fixed.

[0153] Next, we will explain the case of creating permanent waves using a hair iron.

[0154] The hair gripping operation by the above-mentioned gripping surfaces (3, 4) is the same as described above. And, when applying a permanent wave, the hair is pushed against the curl-forming curved surface of the upper or lower side portion described above. Accordingly, the iron body is rotated while gripping the hair by the above-mentioned gripping surfaces (3, 4), and the hair is wrapped toward the tip side (29 or 31).

[0155] Thus, for example, when hair is wrapped around the curl correction surface on one side of the heating unit, the hair begins to be wound from the starting point of the curl-forming surface and remains wound along the curl-forming surface until the end point of the curl-forming surface.

[0156] From the end point of the curl-forming curved surface, the hair extends in a straight line and touches a point on the flat side of the curved surface of the winding surface. The hair touching the winding surface at the point is wound sequentially through the flat surface and the winding curved surface. That is, in the rounded bottom portion of a roughly trapezoidal shape, it is possible for the hair to be wound from the curl-forming curved surface → the curved surface of the winding surface → the flat portion → the winding curved surface.

[0157] Therefore, when performing curl setting, sufficient curl setting can be achieved by ensuring that the hair sufficiently contacts the curl-forming curved surface. Furthermore, by applying tension to the hair by winding the clamping arm, and when attempting to push the hair onto the curl-forming curved surface, the hair can be easily slid along the curved and flat surfaces of the winding surface on the clamping arm side. Therefore, the tension applied to the hair by winding can be efficiently utilized for pushing onto the curl-forming curved surface, thereby enabling sufficient curl setting.

[0158] The above-mentioned plane of the bottom portion is orthogonal to the above-mentioned correction surface, and since the protruding position of this plane and the above-mentioned curl-forming curved surface in the direction of hair insertion is close, the tension applied to the hair by winding can be directly utilized as a pressure force on the curl-forming curved surface by allowing the plane of the winding surface to slide more smoothly, and thus the curl setting can be performed more reliably and easily.

[0159] The pressure applied to the curl-forming surface of the hair can be generated by winding it onto the winding surface, and since the plane is long and the gap between the winding surface and the curl-forming surface is large, a relatively large pressure can be applied to the hair on the curl-forming surface by the rotation of the clamping arm, and in this respect, curl setting can be performed more reliably and easily.

[0160] Next, when hair is wrapped around the curl correction surface on the other side of the heating section (the curl correction surface on the upper side of the rounded, approximately trapezoidal shape), the hair begins to be wound from the point on the curl forming surface on the other side and is wound up to the midpoint of the curl forming surface on the other side.

[0161] From the midpoint of the curl-forming curved surface on the other side, the hair extends in a straight line and likewise touches the curved surface of the winding surface of the upper side. At this point, the hair touching the curved surface of the winding surface of the upper side is sequentially wound onto the winding guide surface on the side opposite to the heating section.

[0162] Therefore, when performing curl setting using the curl-forming curved surface of the upper side, the hair comes into contact with the midpoint of the curvature of the curl-forming curved surface of the upper side, thereby allowing for a gentler curl setting than the curl on the curl-forming curved surface of the lower side. In other words, since the degree of winding of the hair with respect to both the upper and lower curl-forming curved surfaces has been changed, it is possible to easily perform curl setting with different deformations.

[0163] In addition, tension is applied to the hair by winding the clamp arm, and when attempting to push the hair onto the curl-forming curved surface of the upper edge, the hair can be easily slid on the curved surface of the winding surface and the winding guide surface of the upper edge of the clamp arm. Therefore, the tension applied to the hair by winding can be efficiently utilized for pushing onto the curl-forming curved surface of the upper edge, and the curl setting can be performed reliably.

[0164] In addition, in this embodiment, since the curl-forming curved surface of the upper and lower edges of the heating part does not protrude beyond the winding surface of the upper and lower edges that is at the end of the hair insertion direction of the clamping arm, it is possible to prevent the heating part from coming into contact with the patient during the procedure.

[0165] However, the heating part may be configured to protrude beyond the winding surface of the upper and lower edge portions at the end of the hair insertion direction of the clamping arm. In this case, for example, a curl-forming surface curved in the thickness direction of the heating part is installed on one or both sides (upper or lower edge portions) of the end of the hair insertion direction of the heating part. This curl-forming surface protrudes beyond the end of the hair insertion direction of the clamping arm. This curl-forming surface is formed over the entire thickness direction of the heating part and may, for example, take the form of a half arc.

[0166] Corresponding to the curl-forming curved surface of the upper or lower side portion, a curved or flat winding surface for winding hair can be installed on the hair insertion direction end of the tip of the arm (29).

[0167] The winding surface of the upper or lower side portion has a curved surface that is curved in the same direction as the curl-forming curved surface. The winding surface of the upper or lower side portion has a flat surface that is continuous with respect to the curved surface of the upper or lower side portion. This flat surface is set at an acute angle with respect to the straightening surface. The winding surface of the upper or lower side portion has a winding curved surface that is continuous with respect to the flat surface on the opposite side of the straightening surface.

[0168] When hair is wrapped around the curl-forming curved surface of the upper or lower side portion of the heating part, the hair begins to be wound from the point on the curl-forming curved surface of the upper or lower side portion and remains wound up to the point on the other side of the curl-forming curved surface.

[0169] The hair extends linearly from a point on the curl-forming curved surface of the upper or lower side portion and touches a point on the winding plane. The hair touching the winding plane at a point on the plane is sequentially wound into a plane continuous with the winding plane.

[0170] Accordingly, when performing curl setting using the curl-forming curved surface of the upper or lower side portion, the hair can come into contact with at least a quarter arc of the curl-forming curved surface of the upper or lower side portion, and a steeper curl setting can be performed than the curl on the curl-forming curved surface. In addition, by combining the two curl-forming curves, it is possible to easily perform curl setting with different deformations.

[0171] In addition, tension is applied to the hair by winding the clamp arm, and when attempting to push the hair onto the curl-forming curved surface of the upper or lower side, the hair can be easily slid along the plane of the winding surface on the clamp arm side. Therefore, the tension applied to the hair by winding can be efficiently utilized for pushing onto the curl-forming curved surface, and the curl setting can be performed reliably.

[0172] Also, the present invention is not limited to the above embodiments. For example, it is possible to make one or both sides of the clamping surface (3, 4) fixed so that they cannot move relative to the tip side (29, 31). The magnet plate, the first spring, etc. may be omitted.

[0173] Using a hair iron like this, we investigated whether hydrogen peroxide could actually be removed.

[0174] Decomposition Temperature of Hydrogen Peroxide

[0175] Approximately 1g of 100% white human hair bundle (Product No.: BM-WA, manufactured by Vurax) was bleached, and the condition in which hydrogen peroxide remained inside the hair was used as the evaluation bundle. The decomposition temperature of hydrogen peroxide inside the hair was determined by the following method, and that temperature was set as the "hydrogen peroxide removal mode."

[0176] Measurement of Hydrogen Peroxide Concentration at Ironing Temperature

[0177] The bleaching agent 1 of Formula Example 1 and the bleaching agent 2 of Formula Example 2 were mixed in a 1:1 ratio until uniform, applied to the hair bundle, and left at room temperature for 30 minutes. Afterward, the hair was rinsed with warm water, washed with our company's Oolong shampoo (sales name: Nano Supple Cleansing Shampoo OT), rinsed with warm water, and dried with a hair dryer. Then, the hair iron of the present invention was set to 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, and 180°C and passed through the hair bundle three times. Afterward, each hair bundle was moistened with water, and a hydrogen peroxide concentration test strip (Mitsubishi Gas Chemical Trading Co., Ltd.: hydrogen peroxide concentration test strip) was pressed against the ends, middle, and roots of the hair bundles for 5 seconds. The concentration was measured visually, and the color was measured using a spectrophotometer. Table 1 shows Prescription Example 1 (Bleaching Agent 1). Also, Table 2 shows Prescription Example 2 (Bleaching Agent 2).

[0178] [Table 1]

[0179]

[0180] [Table 2]

[0181]

[0182] Determination of Hydrogen Peroxide Decomposition Temperature in Hair Irons

[0183] Next, the hydrogen peroxide concentration test strip is visually checked and shown in Table 3.

[0184] [Table 3]

[0185]

[0186] The L*a*b* color space of the hydrogen peroxide concentration test paper was measured using a spectrophotometer (model number: CM-36dG, manufactured by Konica Minolta) and is shown in Table 4 and Figure 1. The hydrogen peroxide concentration test paper develops a bluer color as the hydrogen peroxide concentration increases. Therefore, when measured with a spectrophotometer, the lower the b* value, the higher the hydrogen peroxide concentration. From Tables 3 and 4, a temperature of 150°C or higher, where the hydrogen peroxide concentration decreases significantly, is appropriate. Therefore, the "hydrogen peroxide removal" mode can be set to 150°C.

[0187] [Table 4]

[0188]

[0189] As a result of these findings, it was found that it is possible to efficiently reduce hydrogen peroxide while operating a hair iron and to minimize hair damage.

[0190] In addition, while the sun was described as asymmetrical when viewed from above, the shape can be modified depending on the application. For example, a straightening iron can be made with basic symmetry. Explanation of the symbols

[0191] 1: First arm 2: Second Cancer 3: 1st Hyeopji-myeon 4: 2nd Hyeopji-myeon 5: Hydrogen peroxide reduction device 6: Temperature control device 7: Connection failure 8: Connection failure 9: Switch 15, 17: Base side 19: Rotation axis 21, 23: Pajibu 25, 27: Reverse section 29, 31: Forehead side 33: One side of the tip (29, 31) 35: One aspect of the Pajibu (21, 23) 37: Both sides (33, 35) are inclined surfaces 39: The other side of the above-mentioned tip side (29, 31) 50: Heart 51: Plate, etc. 60: Plate (heating part) 61: Ceramic heater (heating source) 62: Mica plate 63: Bimetal 64: Bimetal retainer 65: Plate spring for magnetic fixing 66: Plate spring (detailed part) 67: Magnet

Claims

Claim 1 A hair iron having: a first arm and a second arm connected in a manner that can be opened and closed; a first gripping surface installed on the inner side of the first arm; a second gripping surface installed on the inner side of the second arm; and a heating part for heating hair installed on the first gripping surface and the second gripping surface; wherein the heating part has a layer made of at least platinum. Claim 2 A hair iron according to claim 1, wherein the heating part further comprises a layer made of at least one of nickel, copper, electroless nickel, or aluminum. Claim 3 A hair iron according to claim 1 or 2, wherein the thickness of the platinum layer is 0.05 to 1.0 μm. Claim 4 In any one of claims 1 to 3, the surface of the heating part is a hair iron that has been buffed and polished. Claim 5 A hair iron according to any one of claims 1 to 4, wherein the first arm and / or second arm is equipped with a hydrogen peroxide reduction device. Claim 6 A hair iron according to any one of claims 1 to 5, wherein the first arm and / or second arm further comprises a temperature control device. Claim 7 In any one of claims 1 to 6, the hydrogen peroxide reduction device is a hair iron that reduces hydrogen peroxide by setting a temperature. Claim 8 In claim 7, a hair iron having a temperature of 80℃ or higher. Claim 9 A hair iron according to claim 7, wherein the temperature is 140℃ to 180℃. Claim 10 A hair iron having a connecting member connecting the first arm and the second arm in any one of claims 1 to 9. Claim 11 In claim 6, the above-mentioned hydrogen peroxide reduction device and temperature control device are an integrated hair iron. Claim 12 A hair iron according to claim 6, wherein the first arm and / or second arm is equipped with a switch for the hydrogen peroxide reduction device and the temperature control device. Claim 13 In item 10, the above connecting member is one or more hair irons. Claim 14 A hair iron according to any one of claims 1 to 13, wherein the first arm and / or the second arm has a supporting part that supports the clamping surface and elastically adjusts the clamping state by means of the clamping surfaces. Claim 15 A hair iron according to any one of claims 1 to 14, wherein the first arm and / or second arm contains a core material along the longitudinal direction. Claim 16 A hair iron according to any one of claims 1 to 15, wherein the core material has a stopper portion that engages the clamping surface to restrict movement in the protruding direction relative to the first arm and / or second arm. Claim 17 A hair iron according to any one of claims 1 to 16, having a curl-forming surface curved in the thickness direction of the heating part on at least one end edge in the hair insertion direction of the heating part. Claim 18 A hair iron according to any one of claims 1 to 17, having a curved surface on the tip edge of the hair insertion direction of the first arm and / or the second arm. Claim 19 A hair iron having, in claim 17 or 18, further having the curl-forming surface and / or a plane continuous with said surface.

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