KR200459290Y1 - hair iron - Google Patents

Abstract

A hair iron is disclosed, which comprises a heating plate for hair, and a hot plate to which the hair directly touches is made of surface-anodized magnesium or magnesium alloy. At this time, the magnesium content of the magnesium alloy may be 90% or more, the aluminum content may be in the range of 1.5 to 9.5%, the heat-resistant synthetic resin coating may be made on the inner side in contact with the heater.

According to the present invention, it is possible to reduce the thickness and weight of the hot plate while maintaining the same level in terms of mechanical strength, thermal conductivity, etc. of the metal hot plate as a whole, thereby increasing portability and ease of use, and increasing diversity and lightness in design. Shortening can be easily implemented.

Description

Hair iron {hair iron}

The present invention relates to a hair iron.

In general, the hair iron is a device for forming a variety of hairstyles by applying heat to the hair, it is widely used as an apparatus for setting the hair in a general beauty salon or home.

Such a hair iron is usually composed of two parts to sandwich the hair between them, at least one of them is attached with a heater for heating the hair, the heater is a hot plate that directly touches the hair, and the hot plate by self-heating It is often comprised of heat generating parts such as a heater for supplying heat to the heater.

When power is applied to the heat generating unit, the heat plate receiving heat from the heat generating unit is heated, and the hair, that is, the hair, located between the heating plate of the upper body and the heating plate of the lower body, is changed in shape by heat and pressure. As such, the hot plate is the most important part of the hair iron product's working purpose, and it is the most important part that directly affects product performance evaluation and hair processing.

However, in the heater of the conventional hair iron, the hot plate is made of ceramic or metal, and the surface of the metal is often coated with ceramic. Steel or aluminum may be used as the metal used for the hot plate. By the way, in the case of steel products, such as ordinary steel or stainless steel, the weight of the hair iron due to the steel plate was a lot of inconvenience for the user to continue to use.

Although aluminum is not as strong as steel, it has the advantage of being lighter because its specific gravity is lower than that of steel, and it has been used in recent years because it has the advantage of increasing durability by forming a stable oxide film by treating the surface with anodizing technique.

However, in recent years, as the demand for products is diversified, the demand for light and small shortening is also generated. Therefore, there is an increasing demand for products that are lighter and thinner than the aluminum irons using hair irons. In particular, as the demand for mobile home appliances increases, there is a demand for products that can be carried by individuals in the field of hair irons. Such products should be basically light and small in size, and moreover, charging that has a built-in power source. In the case of topographic products, the weight of the rechargeable battery requires that other component parts be lighter and smaller.

In addition, according to the market demand that the insulation between the hot plate and the heater must be strengthened to increase the safety of the use of electrical appliances, an insulating material such as Teflon coating is required between the hot plate and the heater. Products employing these insulating materials have disadvantages such as an increase in the thickness of the hot plate, a lower thermal conductivity, and more heat loss than a product that directly transfers heat from the heater. For example, in the case of a conventional product in which the heater directly contacts the hot plate to provide heat, it takes 45 to 60 seconds for the temperature of the hot plate surface to rise to 180 ° C, which is a normal use temperature. If an insulating sheet such as tefloning is installed between the heater and the hot plate for double insulation in a product of the same specification, the temperature of the hot plate is reduced to about 175 ° C, and the time taken to rise to this temperature is 120 times that of the conventional one. There is a problem that the waiting time is increased to a degree.

This reduces the responsiveness to elevated temperatures and calls for a way to compensate for it. In addition, consumers have 'safe double insulation' and reach faster times (30 seconds) to higher normal temperatures (185 to 190 ° C). "Let's reduce latency" is asking how to accommodate the demand for more performance.

One method is to reduce the thickness of the aluminum hotplate to reduce the thickness to about 1mm, but when it becomes thinner than the existing thickness, aluminum has a weak resistance to deformation in the heated state during use, which may cause deformation such as bending. have. That is, in the heated state, the aluminum hot plate is weak in mechanical strength, and when molded into thin dimensions according to design requirements, a problem arises in that resistance to deformation due to external force or impact is lowered.

The present invention is to overcome the limitations of the prior art described above, and even in a double insulation structure, it can be formed lighter and thinner than a conventional aluminum hot plate product without any deterioration of usability or mechanical strength, and thus has a high design adaptability hot plate. The purpose is to provide a hair iron.

In addition, an object of the present invention is to provide a hair iron which can be suitable as a portable type by having a hot plate which is advantageous in design adaptability such as lightness and miniaturization.

Hair iron of the present invention for achieving the above object, the heating plate for the hair, characterized in that the hot plate to which the hair directly contact is made of a surface anodized magnesium or magnesium alloy. In this case, the magnesium content may be 90% or more, and the aluminum content may be in the range of 1.5 to 9.5%, more preferably 2 to 8.5%.

In the present invention, a heat-resistant resin coating, such as Teflon, may be formed in part on the anodized surface of the hair iron hotplate, in particular at the site where the heat transfer device, such as a heater, touches.

In the present invention, the hot plate may be formed to a thickness of 0.8 mm or more at 1.2 mm or less, more preferably 1 mm or less. The present invention is of great importance when formed in such a thin thickness, and when formed too thin, it is difficult to maintain mechanical strength even if it is magnesium.

In the present invention, it is preferable that a ceramic coating is formed on at least the surface where the hair contacts the anodized surface of the hair iron hot plate.

In the present invention, when the hair iron is a portable hair iron having a charger, the hot plate of the present invention may be more suitably applied.

According to the present invention, it is possible to reduce the thickness and weight of the hot plate while maintaining the same level in terms of mechanical strength, thermal conductivity, etc. of the metal hot plate as a whole, and thus, portability and ease of use can be improved.

Therefore, according to the present invention, it is possible to reduce the thickness of the metal hot plate while having stiffness and form stability, so that it is possible to easily implement the versatility and light weight reduction in design.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is an exploded perspective view showing a hair iron according to an embodiment of the present invention, a pair of upper, lower case (101a, 101b) that is a skeleton of the hair iron heater block 102a , 102b and the inner cover 103a and 103b are fixedly arranged side by side, and one end of the upper and lower cases 101a and 101b uses a pair of upper and lower cases 101a and 101b to hinge. Therefore, the structure is capable of rotating at a predetermined angle about the rotation shaft 106.

Looking at the coupling portion rotatably coupled to a predetermined angle of the two cases, one end of the upper case (101a) support 104a and the mounting portion (111a) formed with a coupling through hole 105a at the center of the side has a predetermined interval They are formed side by side, and the support 104b and the settled portion 111b having a through hole 105b formed at the center of the side surface of the lower case 101b to correspond to the support 104a and the settled portion 111a are fixed. It is formed side by side at intervals.

After coupling the upper case 101a and the lower case 101b with a spring 107 in which the brush 110 is embedded between the supports 104a and 104b and the settled portion, the rotating shaft 106 is passed through the through holes 105a and 105b. By inserting the screw 109 to both ends of the rotating shaft 106 after inserting into the brush 110 through the upper and lower parts by the elasticity of the spring 107 and the external pressure applied to the upper and lower cases 101a and 101b. The cases 101a and 101b may rotate at an angle about the rotation axis 106.

Figure 2 is an exploded perspective view of the heater block portion in the hair iron forming an embodiment of the present invention.

 The heater blocks 102a and 102b which are heat generating structures are heater plates 231 which are exposed to the outside and are in contact with the hair, and heaters 235 installed on the inner side (case side) of the heater plate to generate heat to transfer heat. And a layer of silicon grease 233, not shown, but the heat of the heater 235 is transferred toward the case 210 so that heat generated from the heater between the heater and the heater plate is evenly transferred to the heater plate 231. And a holder 220 for holding a heat insulating layer plate such as a mica to be suppressed and a heater plate 231 to be placed in the case. A hole or a groove is formed in a part of the body constituting the convex wall of the holder 220, and a fuse fixing spring 240 for fixing the heater fuse 265 is installed in the hole or the groove.

Figure 3 is a cross-sectional view showing a cross section vertically cut the heater block in the longitudinal axis direction in one embodiment of the present invention.

The heater plate 231 is made of magnesium or magnesium alloy 231a having a smaller specific gravity and superior mechanical strength than conventional aluminum, and magnesium alloy is more used because of its excellent workability than magnesium. Magnesium alloys containing 1.5% to 9.5% more preferably in the range of 2 to 8.5% and containing at least 90% magnesium content are mainly used. Such alloys may contain trace amounts of elements such as manganese, zinc, and silicon. If the aluminum content is too small out of this range, the alloying effect of improvement of casting, forging workability and corrosion protection performance cannot be enough, and if the aluminum content is too much out of this range, the properties of magnesium decrease, resulting in a rapid decrease in hardness. Is done.

Magnesium is the lightest among the practical metals because its specific gravity is about 2/3 of that of aluminum. In addition, it is excellent in strength in the temperature range of 100 to 200 ℃ where room temperature or hair iron is used, and also excellent resistance to deformation such as warpage compared to aluminum at a practical high temperature such that hair iron is used, the heater plate under the same conditions It is possible to reduce the thickness by 30%.

If the thickness of the heater plate is reduced, the weight of the heater plate can be reduced by half, and the heat transfer resistance from the heater to the hair is reduced, thereby lowering the heat transfer resistance. Therefore, although magnesium has a little lower heat conductivity than aluminum, heat transfer is performed. The resistance is rather lowered. In addition, since there is a margin of dimension, it can be used to diversify the design of the hair iron, and can be suitably used for light short overall.

The magnesium heater plate 231 may be formed by casting, hot forging, die casting, or the like. In particular, in the case of magnesium alloy, the magnesium heater plate 231 may increase workability and electrical conductivity while maintaining the advantages of the magnesium material. If the oxide film 231b of 20 to 30 micrometers is formed on the front surface by anodizing to prevent surface corrosion, it is possible to prevent corrosion from proceeding to the acid and base inside through passivation, and also to prevent damage such as scratches. do. Magnesium oxide film 231b is known to be vulnerable at high temperatures, but it is not a problem because it is stable at a high temperature of about 200 ° C., which is a hair iron use temperature. In the case of forming a fine magnesium oxide film by anodizing in advance, the ceramic coating is increased by increasing the adhesion of the ceramic coating 231c when the ceramic coating 231c is applied to the heater plate surface as compared with the case of the conventional aluminum oxide film. The workability for and the surface strength of the ceramic coating can also be improved. The ceramic material may serve to prevent oxidation from proceeding inside the magnesium. In addition, the ceramic coating 231c prevents damage to the hair compared to the oxide film by the metal or anodizing treatment while being in contact with the hair, and allows the hair to smoothly slide on the heater plate surface.

In this embodiment, the concave inner surface of the heater plate is made of a Teflon coating (231d) on the surface of the portion in contact with the heater 235, and a ceramic coating (231c) of several tens of micrometers on the outer surface in contact with the hair. . Since the ceramic coating is conventionally made on a metal hot plate such as an aluminum hot plate, a specific coating method will be omitted here. The Teflon coating 231d on the inner side may be replaced with another type of fluororesin or another type of synthetic resin coating which is heat resistant and excellent in insulation. Reference numeral 237 denotes a mica layer.

The synthetic resin coating inside the heater plate can prevent double leakage through the heater plate made of magnesium or magnesium alloy together with the oxide film formed on the front surface, and the oxide film inside protects the magnesium heater plate from contamination or denaturation to increase durability. It can also play a role. The synthetic resin film may also be made, for example, at the level of 10 to 100 micrometers. If the synthetic resin film is too thick, the resistance increases in thermal conduction, and if it is too thin, it is difficult to serve as an insulating or protective film.

Referring to FIG. 4, a wireless hair iron that is an embodiment of the present invention will be described. In this embodiment, the size of the upper and lower thickness directions of the handle portion of the case is larger than that of the conventional embodiment of FIG. 1 having a power line. can see. The larger one in the thickness direction of the handle side up and down, i.e., the thick one, is for forming a space for installing a battery to supply electricity to the heater of the hair iron. In the hair iron formed so that the upper and lower cases of which one end is coupled to the hinge axis are relatively rotated so that the angle of the upper and lower cases can be changed, the battery is coupled to the lower case and installed.

As the battery, charging and discharging can be performed, thus reducing the use cost, and a lithium ion secondary battery having a large charge amount is preferably used. Lithium-ion batteries are used to produce high-capacity and high-output power to power devices that require a lot of power, such as hair irons. Pouch-type lithium polymer batteries can be used rather than cylindrical lithium-ion batteries in order to increase safety in use, and individual batteries can be combined in parallel to obtain high output. The battery used in the hair iron may be a package form by combining a plurality of individual cells in parallel, in parallel to the product specifications. The battery package (battery pack) itself usually has a protection circuit for safety during battery charging and discharging therein. The protection circuit is placed between the entire charge / discharge terminal of the battery package and the load (directly connected to the power supply terminal of the circuit board) or the external power supply (terminal of the charge / discharge) to cut off current when overcharge and overdischarge occur. .

The heater control circuit positioned in the middle of the path connecting the battery to the heater 435 is generally formed in the form of a circuit board 480 in which electrical and electronic devices are installed on a PCB. The circuit board 480 is preferably installed in a separate space separated by ribs in the case 410b for electrical and thermal insulation with the battery of the battery pack 451.

However, the circuit board 480 and the battery pack 451 may be directly connected with each other without a separate connection wire, or may be connected with each other through an auxiliary connecting plate. In a similar manner, the circuit board may be directly formed with a connecting terminal to which the wires connected to the heater terminal are connected, or an auxiliary connecting plate having such connecting terminal may be connected to the circuit board.

In the present embodiment, the battery pack 451 and the circuit board 480 are installed in a battery case in which upper and lower battery cases 453 and 455 are combined. The bottom surface of the lower battery case 455 is located at a hole removed from the bottom surface of the lower case 410b to form a smoothly continuous wall with the lower case. The lower battery case 455 is provided with ribs for separating the battery pack 451 installation space and the circuit board 480 installation space. The battery pack 451 may be connected to an external power source (charger / discharger terminal) and a circuit board 480 through auxiliary connection plates 481 and 483 at the front and rear ends. Reference numerals 485, 487, and 489 denote accessory parts of the circuit board 480, respectively, indicating an open / close switch of a circuit, an upper, lower case lock device and a lighting lamp interlocked with the open / close switch.

Here, the circuit board 480 is installed in the form of standing up and down. This reduces the thickness of the cordless hair iron in the vertical direction. Although not shown in the front and rear ends of the circuit board 480, terminals to which wires drawn from the heater 435 are connected are formed.

Although not separately shown, the electric wires facing forward in the circuit board 480 installed at the handle of the lower case 410b are connected to the heater plate 435 of the heater block installation unit of the lower case, and are rearward from the circuit board 480. The electric wires facing through the handle portion of the upper case 410a through the hinge shaft around the upper and lower cases at the rear end of the hair iron are connected to the front heater plate.

The hinge shaft is installed while forming a circular arc like the brush 403, the middle part surrounds the brush, and both ends are coupled to support the upper and lower cases 410a and 410b, respectively. It consists of a screw 405 and a hinge cap (409).

The heater block, which is a heat generating structure, is made of a magnesium alloy, the surface is anodized, and is installed on the heater plate 431 having an inner Teflon coating and a surface ceramic coating, and installed on an inner side (case side) of the heater plate to transfer heat. In order to achieve this, a heater 435 for generating heat and a holder 420 for holding the heater plate 431 in the case are provided. Although not shown here, a heat insulating plate such as a mica which suppresses the transfer of heat of the silicon grease layer and the heater 435 in the direction of the case 410b is usually further provided between the heater and the heater plate, and the heater fuse and Fuse retaining springs may be further installed.

In such portable hair irons, in which the amount of electrical energy stored by batteries is limited, when the insulation sheet having a relatively low thermal conductivity is provided between the heater and the hot plate in comparison with the metal or the oxide film according to the requirement of double insulation, the prior art description As already mentioned in the section, the temperature of the hot plate decreases and the heat loss increases. Therefore, the hot plate coated with magnesium or magnesium alloy as described in the present invention has a thickness smaller than the conventional hair iron specification, for example. By reducing the numerical value, it is possible to avoid such hot plate temperature drop and heat loss increase while maintaining mechanical strength. For example, the hot plate may be formed to a thickness of 0.8 mm or more at 1.2 mm or less, more preferably 1 mm or less.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and such modifications and modifications are within the scope of the appended claims.

1 is an exploded perspective view showing a hair iron according to an embodiment of the present invention,

Figure 2 is an exploded perspective view of the heater block portion in the hair iron forming an embodiment of the present invention,

Figure 3 is a cross-sectional view showing a cross section vertically cut the heater block in the longitudinal axis direction in one embodiment of the present invention;

4 is an exploded perspective view showing a rechargeable hair iron according to an embodiment of the present invention.

Claims (6)

In the hair iron provided with the heater plate (hot plate) in the heating part for heating and processing hair, The heater plate is made of a surface anodized magnesium or magnesium alloy, The heater plate is characterized in that the hair iron is formed from 1.2mm thickness to 0.8mm thickness. delete The method of claim 1, Hair irons, characterized in that the heat-resistant synthetic resin coating on the inner surface of the heater plate facing the current flowing heater. The method of claim 1, Hair iron, characterized in that the ceramic coating is formed on at least a portion of the surface of the heater plate in contact with the hair. The method of claim 1, Hair iron characterized by being portable hair iron having battery charger. delete

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