JPH04250107A - Hair curler - Google Patents

Abstract

PURPOSE:To provide a hair curler which can set durable hair curling with no risk of damage to hair. CONSTITUTION:A cylindrical metal body 11 is embedded in a wind-up frame 10 adapted to be heated by electromagnetic induction heating. A moisture absorbing layer 12 is laid over the outer peripheral surface of a wind-up frame 10. Perforations 4 for making the temperature distribution of the metal body 11 substantially uniform throughout thereof are formed in the metal body at suitable positions. The wind-up frame 10 whose temperature is raised by the metal body 11 which is heated up by electromagnetic induction heating exhibits substantially uniform temperature distribution throughout thereof. That is, hair curling is made by the wind-up frame 10 having substantially uniform temperature distribution throughout thereof, and accordingly, heat given by the wind-up frame 10 is effectively used for hair curling.

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 Conventionally, hair curlers that can be electrically heated have been provided as hair curlers for curling hair by wrapping the hair around the outer periphery of a cylindrical winding frame. This is a positive characteristic thermistor (PTC heater)
There are some that are equipped with a heater inside the winding frame to generate heat by themselves, and others that are equipped with a heat storage agent and are heated by an external heater. The hair is wrapped around a frame and then curled.

[Problem to be Solved by the Invention] However, with this type of conventional hair curler, the hair is curled by applying heat directly to the hair using a heated curling frame, so the heat causes moisture in the hair to evaporate. , the moisture content of the hair decreases, making the hair dry and dry, resulting in poor texture and lack of shine. becomes more,
The drawback was that the curls did not hold well due to moisture absorption, and even if set, they would easily fall apart over time. Furthermore, in use, the hair must be wrapped around a hot winding frame, which is difficult and time-consuming. The present invention aims to solve the above-mentioned problems, and its purpose is to provide a hair curler that can curl hair with good durability without damaging the hair.

[Means for Solving the Problems] The hair curler of the present invention has a winding frame that includes a cylindrical metal body and is heated by electromagnetic induction heating, and a water absorption layer arranged on the outer peripheral surface of the winding frame. This hair curler is made up of a hair curler in which through holes are provided at appropriate locations in the metal body to make the temperature distribution of the metal body heated by electromagnetic induction heating substantially uniform over the entire 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. Furthermore, a plurality of protrusion rows composed of a plurality of protrusions may be provided along the circumferential direction on the outer peripheral surface of the winding frame, and these protrusion rows may be arranged alternately with the water absorbing layer.

[Function] According to the present invention, hair is not curled by directly heating the hair, but the hair curler is wrapped around the steam generated by evaporating the moisture held in the water absorbing layer. Since curling can be done by supplying the curl to the heated hair, it is possible to effectively utilize the heat of the heated curling frame without reducing the moisture content of the hair, that is, without damaging the hair. Furthermore, since the reel is heated by electromagnetic induction heating, the time required for heating is shortened, and furthermore, curling is performed using a reel with almost uniform temperature distribution throughout. Therefore, curling can be performed by effectively utilizing the heat of the winding frame.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on illustrated embodiments. 1 and 2 show a cross-sectional view and a perspective view of a hair curler 1 according to the invention, FIG. 3 shows a perspective view of a metal body 11 used in the invention, and FIG. 4 shows a hair curler 1 according to the invention.
2 shows a heating device 2 for heating. To explain the hair curler 1, a cylindrical metal body 11 made of iron, stainless steel, etc. is embedded in a cylindrical winding frame 10 made of a synthetic resin with high specific heat such as polyester elastomer, and the winding frame 10 is A water absorbing layer 12 made of foamed urethane, felt, polyester fiber, etc. is provided on the outer peripheral surface of the holder. Here, the edge of the water-absorbing layer 12 is located inward from the edge of the winding frame 10, and when the hair curler 1 is held by hand, the water-absorbing layer 12
The user can directly hold the end of the reel 10 without touching it. Further, the edge of the metal body 11 built in the winding frame 10 is positioned inward from the edge of the winding frame 10. In other words, the edge of the metal body 11 built in the winding frame 10 is The metal body 11 is in a state where it protrudes more than the edge of the metal body 11. On the outer peripheral surface of the winding frame 10, a plurality of protrusion rows 3 are provided at regular intervals along the circumferential direction to make it easier to wind the hair curler 1 around the hair. The protrusion rows 3 are formed by arranging a plurality of protrusions 3a adjacent to each other, and are arranged alternately with the water absorption layers 12 on the outer peripheral surface of the winding frame 10. The cylindrical metal body 11 embedded in the winding frame 10 is heated by electromagnetic induction heating, and there are injectors at appropriate locations on the metal body 11 to make the temperature distribution of the metal body 11 almost uniform over the entire body during heating. A through hole 4 is provided for this purpose. In the case shown in FIG. 3, there is shown one provided at regular intervals along the circumferential surface in the central part of the metal body. The heating device 2 is provided with a recess 20 in which the hair curler 1 can be housed, as shown in FIG. A ferrite rod 22 and a heating coil 23 surrounding the ferrite rod 22 are embedded in the center of the shaft 21. A circuit block 24 for passing high frequency current through the heating coil 23, a cord reel 25 for power supply, and a power supply cap 26 are provided at the bottom of the heating device 2. When the hair curler 1 is loaded into the recess 20, the water absorbing layer 12 of the hair curler 1 is formed in the recess 20.
The water to be supplied to the recess 20 can be stored in the hair curler 1 with the water stored in the recess 20.
When attached to the shaft portion 21, the water stored in the recess 20 is supplied from the lower part of the water absorbing layer 12 and is retained over almost the entire surface of the water absorbing layer 12. Then, if the hair curler 1 is loaded into the recess 20 of the heating device 2 and an alternating magnetic field is generated by passing a high frequency current through the heating coil 23, this alternating magnetic field will cause the metal body 1 of the hair curler 1 to
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, and the heat of this metal body is transferred to the winding frame 10 over time, and the winding frame 10 is heated. That will happen. And metal body 11
When the hair curler 1 is heated, the hair curler 1 is removed from the heating device 2 and hair is wrapped around it. After the winding is completed, the winding frame 10 is heated and the water held in the water absorbing layer 12 evaporates and the hair curls. After that, the moisture that has penetrated into the hair is evaporated by the heat generated by the winding frame 10, and the curl is fixed. At this time, when the metal body 11 shown in FIG. 7 is used, the strength of the magnetic field is stronger at the center of the metal body than at both ends, so eddy currents flow more in the center, and the resulting Joule heat also increases, and the temperature distribution of the metal body 11 becomes higher 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 absorption layer 12, and water is still retained at both ends. As a result, the steam does not penetrate well into the hair, resulting in weak curling.
This may cause partial damage to the hair. Therefore, when the metal body 11 is provided with the through holes 4 as described above, the existence of the through holes 4 can reduce the eddy current in the central part, and the Joule heat generated thereby can also be reduced. As a result, the temperature distribution of the winding frame 10 is almost constant throughout the entire winding frame 10, as shown in FIG. It becomes uniform. And like this, metal body 1
1 can raise the surface temperature of the winding frame 10 uniformly over the entire surface by heating the entire surface to approximately the same temperature, and the steam to be evaporated will be generated from the entire water absorption layer 12, so that the steam generation position will be uneven. This eliminates the appearance of water and allows the water retained in the water absorbing layer 12 to be evaporated throughout and supplied to the hair.
Hair curling is ensured by using a large amount of steam. The hair is heated by steam rather than heated by heat conduction from the winding frame 10, and the moisture content of the hair does not decrease during this heating, so the hair is not damaged. In particular, since steam is generated from the entire winding frame 10 when the hair is wound, the efficiency of steam penetration into the hair is good. In addition, since the winding frame 10 is heated by electromagnetic induction heating, the time required for heating is short (about 10 seconds), and multiple hair curlers 1 can be heated one after another without having to heat them at the same time. Since curling can be performed by heating, the cost required for the heating device 2 is small, and at the same time, heating loss is also reduced. Of course, even on the hair curler 1 side, the metal body 1
Since it is only necessary to embed 0 and no terminals or heaters are required, there is no fear of deterioration or failure, the hair curler 1 itself can be provided at low cost, and the hair curler 1 can also be washed with water. Furthermore, if the metal body 11 is provided with a through hole 4, the through hole 4 also serves as a flow port for the molding resin when forming the winding frame 10, and when molding the metal body, the resin on the inside and outside of the winding frame 10 is drawn into the center. It is possible to integrate the parts at the same time, thereby improving the strength. Furthermore, when the protrusion rows 3 and the water-absorbing layers 12 are arranged alternately, the steam that evaporates from the water-absorbing layers 12 is supplied to the hair between the portions where the hair is wrapped and held by the protrusion rows 3, thereby ensuring curling. This is what will be done. Since the heat of the metal body 11 heated in a short time by induction heating takes time to spread to the entire winding frame 10, the hair winding work can be completed during this time, and the hair curler in the hottest state can be finished. Since there is no need to touch the hair reel 10 with your hands, it is easier to handle the hair, and the heat of the hair reel 10 can be effectively used for curling the hair. Here, the water absorption layer 12 is arranged inward from the edge of the winding frame 10, and the winding frame 1
If the edge of the hair curler 10 protrudes beyond the built-in metal body 11, it will not get hot even if you hold the edge of the winding frame 10 by hand, so when taking out the hair curler 1 from the heating device 2 after heating, It is something that can be done easily and furthermore,
By holding the edge with your hand, you will not be able to touch the water absorption layer 12 that absorbs water. And heating with electromagnetic induction heating means that compared to hair curler 1 which has a built-in heater, there is no need to supply power to hair curler 1, so the terminals for power supply can be short-circuited due to moisture or leakage. It is very suitable as a device that uses steam because it does not cause any accidents or electric shock accidents, and compared to devices that use an external heater, there is no hot part on the heating device 2 side. There is also the advantage that there is no need to worry about getting burned. FIG. 6 shows another embodiment of the metal body 11, in which the through hole 4 is provided at a location other than the center.
The position of the through hole 4 is set at a position where the strength of the magnetic field is constant and the eddy current flows uniformly.

[Effects of the Invention] As mentioned above, the hair curler of the present invention curls the hair not by directly heating the hair, but by using steam generated by evaporating the water held in the water absorption layer. Because of this, it is possible to curl the hair without reducing the moisture content of the hair, that is, without damaging the hair, and the hair curled in this way has a good curl retention. Become. In addition, since the reel is heated by electromagnetic induction heating, the time required for heating is short and it is easy to use.Furthermore, the metal body built into the reel has a through hole. Since the temperature of the reel whose temperature rises due to the metal body heated by electromagnetic induction heating is uniform throughout the reel, the water retained in the water absorption layer is steamed throughout the reel. can be done,
Good curling can be achieved.

[Brief explanation of the drawing]

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

FIG. 2 is a perspective view of the same as above.

FIG. 3 is a perspective view of the metal body same as above.

FIG. 4 is a cross-sectional view of the heating device loaded with the same hair curler as above.

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

FIG. 6 is a perspective view showing another example 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 the temperature distribution of the metal body during heating according to the above.

[Explanation of symbols]

1 Hair curler 3. Row of protrusions 4 Through hole 10 Reel frame 11 Metal body 12 Water absorption layer

Claims (3)

[Claims] Claim 1: A hair curler comprising a winding frame containing a cylindrical metal body and heated by electromagnetic induction heating, and a water absorption layer arranged on the outer peripheral surface of the winding frame, the hair curler being heated by electromagnetic induction heating. 1. A hair curler characterized in that a metal body is provided with through holes at appropriate locations to make the temperature distribution of the metal body substantially uniform over the entire body. 2. The hair curler according to claim 1, wherein the edge of the winding frame in which the metal body is incorporated is made to protrude beyond the edge of the metal body. 3. A claim characterized in that a plurality of protrusion rows each consisting of a plurality of protrusions are provided along the circumferential direction on the outer peripheral surface of the winding frame, and these protrusion rows are arranged alternately with the water absorption layer. 1. The hair curler according to 1.