JP3069378B2 - Hair curlers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair curler for curling hair.

2. Description of the Related Art A hair curler that winds hair around a cylindrical winding frame and curls the hair has conventionally been provided which can be electrically heated. This is a type in which a heater such as a positive temperature coefficient thermistor (PTC heater) is provided in the winding frame to generate heat, or a type in which a heat storage agent is provided and heated by an external heater. By applying heat to the hair, the hair wound around the winding frame is curled.

However, in this type of conventional hair curler, the hair is curled by directly applying heat to the hair with a heated winding frame. In addition to the drawback that the moisture content of the hair decreases, the hair becomes crisp and the feel becomes poor, and the hair loses its luster. Increases,
There is a drawback that the curl is poorly held due to moisture absorption and breaks down soon after a lapse of time even after setting.
In addition, even in use, the operation is to wind the hair around the hot winding frame, so that the operation is difficult and time-consuming. An object of the present invention is to solve the above-described problems, and an object of the present invention is to provide a hair curler that can carry a curl with good durability without damaging the hair.

According to the hair curler of the present invention, there is provided a winding frame having a cylindrical metal body and heated by electromagnetic induction heating, and a water absorbing layer disposed on the outer peripheral surface of the winding frame. And a through-hole for making the temperature distribution of the metal body heated by the electromagnetic induction heating substantially uniform throughout the hair body. Further, the edge of the winding frame in which the metal body is built may be made to protrude beyond the edge of the metal body. Further, a plurality of projection rows composed of a plurality of projections may be provided along the circumferential direction on the outer peripheral surface of the winding frame, and the projection rows may be alternately arranged with the water absorbing layer.

According to the present invention, the hair curler is not wound by directly heating the hair, but is wound around the steam generated by evaporating the water held in the water absorbing layer. Can be carried out by supplying the curled hair without curtailing the moisture content of the hair, that is, effectively using the heat of the heated reel without damaging the hair In addition, the time required for heating to heat the reel by electromagnetic induction heating can be shortened, and curling is performed using a reel having a substantially uniform temperature distribution throughout. Therefore, curling can be performed by effectively utilizing the heat of the winding frame.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. 1 and 2 show a cross-sectional view and a perspective view of a hair curler 1 according to the present invention, FIG. 3 shows a perspective view of a metal body 11 used in the present invention, and FIG.
2 shows a heating device 2 for heating the heating device. The hair curler 1 will be described. The hair curler 1 is formed by embedding a cylindrical metal body 11 made of iron, stainless steel, or the like in a cylindrical winding frame 10 formed of a synthetic resin having a large specific heat such as polyester elastomer. Is provided with a water-absorbing layer 12 made of urethane foam, felt, polyester fiber or the like on the outer peripheral surface. Here, the edge of the water absorbing layer 12 is located inside the edge of the winding frame 10, and when the hair curler 1 is held by hand, the water absorbing layer 12
The end of the winding frame 10 can be directly held without touching. Further, the edge of the metal body 11 built in the winding frame 10 is located inside the edge of the winding frame 10, that is, the edge of the winding frame 10 is built in the winding frame 10. The metal body 11 is in a state of projecting more than the edge of the metal body 11. A plurality of projections 3 are provided on the outer peripheral surface of the winding frame 10 at regular intervals along the circumferential direction to facilitate the winding of the hair curler 1 around the hair. The projection rows 3 are formed by arranging a plurality of projections 3 a so as to be adjacent to each other, and are alternately arranged with the water absorbing layer 12 on the outer peripheral surface of the winding frame 10. The cylindrical metal body 11 buried in the winding frame 10 is heated by electromagnetic induction heating, and in a proper position of the metal body 11, the temperature distribution of the metal body 11 during heating is made substantially uniform throughout. Holes 4 are provided. FIG. 3 shows one that is provided at regular intervals along the peripheral surface in the center of the metal body. As shown in FIG. 4, the heating device 2 includes a concave portion 20 that can accommodate the hair curler 1. The concave portion 20 is located at the center of the concave portion 20 and when the hair curler 1 is loaded into the concave portion 20, A ferrite rod 22 and a heating coil 23 surrounding the ferrite rod 22 are embedded in the center of the shaft part 21. A circuit block 24 for supplying a high-frequency current to the heating coil 23, a cord reel 25 for supplying power, and a power supply cap 26 are provided below the heating device 2. When the hair curler 1 is loaded in the recess 20, the concave portion 20 has a water absorbing layer 12 of the hair curler 1.
When the hair curler 1 is mounted on the shaft portion 21 in a state where the water is stored in the concave portion 20, the water stored in the concave portion 20 is stored in the water absorbing layer 12. Water is supplied from the lower part and is kept substantially over the entire surface of the water absorbing layer 12. When the hair curler 1 is loaded into the concave portion 20 of the heating device 2 and an alternating magnetic field is generated by flowing a high-frequency current through the heating coil 23, the metal body 1 of the hair curler 1 is generated by the alternating magnetic field.
1, an eddy current is generated, and the metal body 11 is heated by Joule heat due to the eddy current and the specific resistance of the metal body.
The heat of the metal body is transmitted to the winding frame 10 with the passage of time, and the winding frame 10 is heated. And metal body 1
When the hair curler 1 is removed from the heating device 2 at the time of heating the hair 1, and the hair is wound around the hair curl 1, after the winding is completed, the winding frame 10 is heated, and the moisture held in the water absorbing layer 12 evaporates to remove the hair. After that, the moisture that has permeated the hair evaporates due to the heat generated by the reel 10, and the curl is fixed. At this time, when the metal body 11 as shown in FIG. 7 is used, the intensity of the magnetic field is stronger at the center of the metal body than at both ends, so that a large amount of eddy current flows at the center. Joule heat also increases, and the temperature distribution of the metal body 11 increases at the center as shown in FIG. When the temperature distribution of the metal body 11 is higher at the center than at both ends, steam is generated intensively from the center of the water absorbing layer 12, and water is still retained at both ends. As a result, steam does not penetrate well into the hair, resulting in weak curling or partial damage to the hair. For this reason, in the metal body 11 having the through hole 4 as described above, the presence of the through hole 4 can reduce the eddy current in the central portion, and the Joule heat generated thereby is also reduced. As shown in FIG. 5, the temperature distribution of the winding frame 10 is substantially reduced over the entire area, as shown in FIG. Become uniform. The entire surface of the metal body 11 is thus heated to substantially the same temperature, so that the surface temperature of the reel 10 can be raised uniformly over the entire body, and steam to be evaporated is generated from the entire water absorbing layer 12. This eliminates unevenness at the steam generation position, and allows the water retained in the water absorbing layer 12 to evaporate over the entirety and be supplied to the hair. It will be performed reliably. The hair is heated by steam rather than by heat conduction from the winding frame 10, and the water content of the hair does not decrease during the heating, so that the hair is not damaged. In particular, since steam is generated from the entire winding frame 10 in a state where the hair is wound, the efficiency of steam penetration into the hair is high. In addition, since the winding frame 10 is heated by electromagnetic induction heating, the time required for heating can be short (about 10 seconds), and the hair curlers 1 need not be heated at the same time one after another. Heating device 2
In addition, the heating cost is reduced, and the heating loss is also reduced. Of course, even on the hair curler 1 side, it is only necessary to embed the metal body 10, and since there is no need for terminals and heaters, there is no fear of deterioration or failure, and the hair curler 1 itself can be provided at a low cost. Also, the hair curler 1 can be washed with water. Further, the through holes 4 are formed in the metal body 11.
Is provided, when forming the winding frame 10, the through hole 4 also serves as a flow port of the molding resin, and the resin inside and outside the winding frame 10 can be integrated at the center portion at the time of metal body molding, Strength can be improved. Further, when the projection rows 3 and the water absorbing layers 12 are alternately arranged, steam that evaporates from the water absorbing layers 12 is supplied to the hair between the winding and holding portions of the hair by the projection rows 3, and the curling is reliably performed. It will be done. The heat of the metal body 11 heated in a short time by induction heating
Since it takes time to spread the hair to the entirety, the hair winding operation can be completed during this time. Reel 1 for curling
The heat of 0 is effectively used. Here, if the water absorbing layer 12 is arranged inward from the edge of the reel 10 and the edge of the reel 10 is projected from the built-in metal body 11, the edge of the reel 10 is manually moved. The hair curler 1 can be easily removed from the heating device 2 after heating because the hair curler 1 is not heated even if it is held. The layer 12 does not touch the hand. Heating by electromagnetic induction heating means that power supply to the hair curler 1 side is unnecessary when compared to the hair curler 1 with a built-in heater, so that the power supply terminals are short-circuited by moisture or short circuit. It does not cause any accidents or electric shock accidents, and is very suitable as a device using steam. In addition to the fact that it is heated by an external heater, a portion that becomes hot on the side of the heating device 2 may be used. There is also the advantage that it does not exist and there is no worry about burns. FIG. 6 shows another embodiment of the metal body 11, in which the through-hole 4 is provided at a place other than the center. Is set at a position where the intensity of the eddy current becomes constant and the eddy current flows uniformly.

According to the hair curler of the present invention, the curling of the hair is not performed by directly heating the hair as described above, but by using steam generated by evaporating the water retained in the water absorbing layer. Can be curled without reducing the moisture content of the hair, that is, without damaging the hair, and the hair thus curled should have a good curl. Become. In addition, since the time required for heating to heat the reel by electromagnetic induction heating is short, it is easy to use, and further, a through hole is provided in a metal body built in the reel. Since the temperature of the reel that rises due to the metal body heated by electromagnetic induction heating is assumed to be uniform in the entire temperature distribution, steaming of the water retained in the water absorbing layer is performed over the entire reel. Can do
Good curling can be performed.

[Brief description of the drawings]

FIG. 1 is a sectional view showing one embodiment of the present invention.

FIG. 2 is a perspective view of the same.

FIG. 3 is a perspective view of the metal body according to the first embodiment;

FIG. 4 is a cross-sectional view of the heating device in a state in which the hair curler is loaded.

FIG. 5 is an explanatory diagram illustrating a temperature distribution of a metal body during heating.

FIG. 6 is a perspective view showing another embodiment of the metal body.

FIG. 7 is a perspective view of a metal body in a comparative example.

FIG. 8 is an explanatory diagram illustrating a temperature distribution of a metal body during heating according to the first embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hair curler 3 Projection row 4 Through-hole 10 Reel 11 Metal body 12 Water absorption layer

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A45D 2/36 A45D 4/16 A45D 7/02

Claims (3)

(57) [Claims] 1. A hair curler comprising: a winding frame containing a cylindrical metal body and heated by electromagnetic induction heating; and a water absorbing layer disposed on an outer peripheral surface of the winding frame, wherein the hair curler is heated by electromagnetic induction heating. A hair curler characterized in that through holes for making the temperature distribution of the metal body to be made substantially uniform throughout the metal body are provided at appropriate places in the metal body. 2. The hair curler according to claim 1, wherein an edge of the winding frame in which the metal body is built is protruded from an edge of the metal body. 3. A plurality of projection rows each comprising a plurality of projections are provided along the circumferential direction on the outer peripheral surface of the winding frame, and the projection rows are alternately arranged with the water absorbing layer. 1
Hair curlers as described.