JP3590155B2 - Dielectric heating hair curler - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a hair curler which is heated by a dielectric heating device such as a microwave oven before use.
[0002]
[Prior art]
As this type of hair curler, there is a hair curler in which a heat storage material of a dielectric heat generation type such as polyethylene glycol is sealed in a heat storage container, and the heat storage container is incorporated in a curler body (document unknown).
[0003]
[Problems to be solved by the invention]
However, in the above-mentioned dielectric heating type hair curler, when placed in a microwave oven and heated, the heat storage material generates heat and expands in volume, so that a space for absorbing this expansion is formed inside the heat storage container. ing. The heat storage container is made of polypropylene or the like having a low dielectric constant so as to transmit with little absorption of microwaves, similarly to the molding material of the curler body. Therefore, during use, a space is generated inside the heat storage container as the heat storage material radiates heat, and heat may not be applied to the curler body in this space. Therefore, there has been a problem that heat cannot be uniformly transmitted to the curled hair on the curler body and uneven heating is likely to occur.
[0004]
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a dielectric heating hair curler capable of uniformly applying heat of a heat storage material to curled hair.
[0005]
[Means for Solving the Problems]
In the dielectric heating type hair curler of the present invention, an inner cylinder 3 made of a thermally conductive metal having openings 4 for introducing microwaves at both ends inside a plastic curler main body 1 is provided on the outer periphery of the curler main body 1. It is placed so as to be in polymerized contact with the inner circumference. Heat storage material 6 of a dielectric heating type is accommodated in a state of being placed in a thermal storage container 9 inside of the inner tube 3. The interior of the thermal storage vessel 9 to form a space 7 for volume expansion absorption of the heat storage material 6. When the hair curler is put into a microwave oven, the heat storage material 6 absorbs microwaves transmitted through the curler body 1 and the heat storage container 9 to generate heat. When the hair curler is used, the inner cylinder 3 made of a heat conductive metal uniformly conducts the heat radiation of the heat storage material 6 to the entire curler body 1 and the entire curler body 1 is uniformly heated.
An opening 4a for introducing microwaves is provided on a side surface of the inner cylinder 3, and the microwave is easily absorbed by the heat storage material 6 through the opening 4a.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
The curler main body 1 of the dielectric heating hair curler according to the present invention has a low dielectric constant such as polymethylpentene (dielectric constant 2.12) and polypropylene (dielectric constant 2.0 to 2) so as to transmit with little absorption of microwaves. .3) and the like. Examples of the thermally conductive metal material of the inner cylinder 3 that is placed so as to be in superimposed contact with the inner periphery of the curler body 1 include aluminum and copper having reflectivity to high frequencies. In order to bring the outer periphery of the inner cylinder 3 into overlapping contact with the inner periphery of the curler body 1, the inner cylinder 3 is press-fitted to the inner periphery of the curler body 1 or insert molded.
[0007]
As the heat storage material 6 of the dielectric heating type housed in the inner cylinder 3, a water-soluble latent heat storage material such as polyethylene glycol which absorbs microwaves passing through the curler body 1 and the inner cylinder 3 and generates heat is used. The heat storage material 6 accommodated in the inner cylinder 3 in a state placed in pre Me thermal storage vessel 9.
[0008]
【Example】
(First embodiment)
1 and 2 show a first embodiment of the present invention. A curler main body 1 is molded into a cylindrical shape using polymethylpentene as a molding material, and hair winding projections 2 are arranged on the outer periphery thereof. An inner cylinder 3 made of aluminum is press-fitted into the curler body 1. The inner cylinder 3 has openings 4 for introducing microwaves at both ends thereof . A heat storage material 6 made of polyethylene glycol is accommodated in the inner cylinder 3. At this time, the heat storage material 6 is sealed in advance in a heat storage container 9 made of polymethylpentene so as to form a space 7 for absorbing volume expansion. Press fit into the inside of the cylinder 3.
When the hair curler having the above configuration was placed in a microwave oven and heated, the outer surface of the curler body 1 could be uniformly heated to 70 to 80 ° C. during use.
[0009]
In an embodiment of this, there is a thermal storage life in the heat storage material 6, in which the heat storage vessel 9 so that it can replace the heat storage material 6 simply after life cartridge. An opening 4a for introducing microwaves is formed in the central portion in the longitudinal direction of the cylindrical peripheral wall 5 of the inner cylinder 3 in a horizontally long shape, while a rib 10 is provided on the outer periphery of the cartridge type heat storage container 9, and the rib 10 is connected to the horizontally elongated opening. 4a. Thereby, positioning and fixing of the cartridge-type heat storage container 9 with respect to the inner cylinder 3 can be easily performed .
[0010]
[0011]
( Second embodiment)
3 and 4 show a second embodiment of the present invention. In this embodiment, the openings 4 at both ends of the inner cylinder 3 are opened and closed by a lid 14 made of aluminum or copper, together with a coil spring 13 made of a Ti-Ni shape memory alloy. The coil spring 13 made of a Ti-Ni shape memory alloy memorizes the shape in a close contact state. At room temperature, the lid 14 is pinched by the knob 15 provided on the coil spring 13 and pulled out from the opening 4 as shown in FIG. It is in a stretched state.
Now, when the microwave oven is placed sideways, microwaves pass through the curler body 1 and are absorbed by the heat storage material 6 through the opening 4. Then, the heat storage material 6 generates heat, and the coil spring 13 made of the Ti-Ni shape memory alloy undergoes a reverse transformation from a martensite phase to an austenite phase at about 50 ° C., which is slightly higher than the freezing point of the heat storage material 6 at 43 to 46 ° C. At that time, it tries to return to the original contact state while generating a strong force. The lid 14 is pulled by this recovery force to close the opening 4 (the state of FIG. 4 ). Therefore, it is possible to confirm that the heat storage material 6 is heated by observing the closed state, and it is possible to prevent the curler body 1 from being thermally deformed or melted by further heating. Further, when the lid 14 is closed in use, the lid 14 does not hinder the hair winding and is easy to use.
[0012]
The shape memory alloy may be a Cu-Al-based or Cu-Zn-based alloy.
The lid 14 is formed in a conical shape whose convex portion faces the inside of the curler body 1 and the inner cylinder 3. As a result, the microwave strikes the conical slope 14 a of the lid 14 and is reflected and easily introduced into the opening 4. The inner cylinder 3 is insert-molded on the inner periphery of the curler body 1, a concave groove 16 is provided on the inner periphery of the inner cylinder 3, and the rib 10 provided on the outer periphery of the heat storage container 9 is fitted into the concave groove 16. As a result, the heat storage container 9 is positioned and fixed in the inner cylinder 3. Other configurations are the same as those of the first embodiment.
[0013]
[0014]
[0015]
[0016]
[0017]
【The invention's effect】
According to the hair curler of the dielectric heating type of the present invention, since the heat radiation of the heat storage material 6 is conducted to the curler body 1 through the inner cylinder 3 made of a heat conductive metal, the heat storage material 6 absorbs the volume expansion. Although the space 7 is formed, the curler body 1 can be uniformly heated by the heat storage material 6, and the curled hair can be heated and set uniformly, which is advantageous.
[Brief description of the drawings]
1 is a longitudinal sectional view of a dielectric heating type hair curler showing a first embodiment.
FIG. 2 is an exploded perspective view of the dielectric heating hair curler of the first embodiment.
FIG. 3 is a longitudinal sectional view showing a dielectric heating hair curler of a second embodiment in a state before heating .
FIG. 4 is a longitudinal sectional view showing the dielectric heating hair curler of the second embodiment after heating .
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Curler main body 3 Inner cylinder 4.4a Opening 6 Heat storage material 7 Space 9 Heat storage container

Claims (3)

Inside the tubular curler body 1, an inner cylinder 3 made of a thermally conductive metal having openings 4 for introducing microwaves at both ends is placed so that the outer periphery of the inner cylinder 3 is in overlapping contact with the inner periphery of the curler body 1. Yes,
An opening 4 a for introducing microwaves is provided in a laterally long shape on the side surface of the inner cylinder 3,
A heat storage container 9 is housed inside the inner cylinder 3 ,
A heat storage material 6 of a dielectric heating type is placed in a heat storage container 9 so as to form a space 7 for absorbing the volume expansion of the heat storage material 6.
A rib 10 is provided on the outer periphery of the heat storage container 9,
A hair curler of a dielectric heating type, characterized in that a rib (10) is engaged with an opening (4a) on a side surface of the inner cylinder (3) and the heat storage container (9) is of a cartridge type . The hair curler according to claim 1, wherein the openings (4) at both ends of the inner cylinder (3) can be opened and closed by a lid (14) by a coil spring (13) made of a shape memory alloy . The hair curler according to claim 2 , wherein the coil spring (13) is a Ti - Ni shape memory alloy .

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