JP3537555B2 - Dielectric heating hair curler - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. 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]

2. Description of the Related 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 water or polyethylene glycol is sealed in a heat storage container, and the heat storage container is incorporated in a curler body (document unknown).

[0003]

However, in the above-described dielectric heating type hair curler, when placed in a microwave oven and heated, the heat storage material generates heat and expands in volume. A space is formed inside the heat storage container. 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.

A plastic material, such as polypropylene, which is a molding material for the curler body and the heat storage container, for example, is 175.
Start melting at ° C. Although the plastic material itself does not generate heat, if the heat storage material has a boiling point of 200 ° C. or higher, which exceeds the melting temperature of the plastic material, such as polyethylene glycol, the heat storage material boils due to excessive heating, and the curler body and heat storage The container undergoes thermal deformation and melting.
Also, if the curler body is hot even if it does not melt,
Touching it when removing it from the microwave may cause burns.

[0005] If a dielectric heating type hair curler is directly put into a microwave oven in an exposed state, when the microwave oven is used for heating food, hair attached to the hair curler adheres to the food, or conversely, from the food. Hygiene problems occur with each other, such as spilled liquid juice adhering to the hair curlers.

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 dielectrically heated hair curler capable of uniformly applying heat of a heat storage material to curled hair. SUMMARY OF THE INVENTION It is an object of the present invention to provide a dielectrically heated hair curler capable of preventing the curler body from being melted or thermally deformed and facilitating removal from a microwave oven. An object of the present invention is to provide a dielectrically heated hair curler that can be hygienically heated in a microwave oven.

[0007]

According to the hair heating curler of the present invention, an inner tube 3 made of a heat conductive metal has an inner periphery of the inner periphery of the curler body 1 inside a cylindrical curler body 1. And polymerized contact. The heat storage material 6 of the dielectric heat generation type is accommodated in the inner cylinder 3 directly or in a state stored in the heat storage container 9. The inner cylinder 3 has an opening 4 for introducing microwaves.
Is provided. The opening 4 is made openable and closable by a shape memory alloy lid 12, and the shape memory alloy lid 12 stores the shape so that the opening 4 is closed at a temperature equal to or lower than the boiling point of the heat storage material 6.
In some cases, the microwave is transmitted through the curler body 1 when placed in a microwave oven, and passes through the opening 4 to store the heat storage material 6.
Is absorbed by At this time, the microwave is easily absorbed by the heat storage material 6 through the opening 4. The opening 4 is the shape memory alloy lid 1
Since the opening 4 is closed at a temperature equal to or lower than the boiling point of the heat storage material 6 due to the shape memory effect of 2, the heat storage material 6 does not absorb microwaves, so that excessive heating can be prevented, and thermal deformation and melting of the curler body 1 can be prevented. Can be prevented. The inner cylinder 3 made of a heat conductive metal uniformly transmits the heat radiation of the heat storage material 6 to the entire curler body 1.

The curler body 1 is stored in a storage case 21 so as to be able to be taken in and out. It shall be placed in the microwave in its stored state. Therefore, it can be hygienically heated in a microwave oven. At this time, the shape memory alloy lid 12 that opens and closes the microwave introduction opening 4 on the curler body 1 is provided on the storage case 21 side. This makes the hair curler lighter by the weight of the shape memory alloy lid 12 and is easier to use.

The hair curler of the dielectric heating type according to the present invention has an upper and lower curler body 1A having a cylindrical curler body 1 having a semicircular cross section.
・ Match 1B. An upper inner cylinder 3A made of a thermally conductive metal having a semicircular cross section is provided inside the upper curler body 1A, and a lower inner cylinder 3B made of a thermally conductive metal having a semicircular cross section is provided inside the lower curler body 1B. It is placed in a polymerization contact state. The heat storage material 6 of a dielectric heating type is accommodated in the upper and lower inner cylinders 3A and 3B, respectively. Upper curler body 1A and lower curler body 1B
Are connected by a closing drive element 16 made of a shape memory alloy, and the closing drive element 16 stores the shape in a state where the upper curler main body 1A and the lower curler main body 1B are closed at a temperature equal to or lower than the boiling point of the heat storage material 6. Things. When appropriate,
When the upper curler body 1A and the lower curler body 1B are put into a microwave oven in an open state, the heat storage material 6 in the upper inner cylinder 3A and the heat storage material 6 in the lower inner cylinder 3B expose their mating surfaces. , It becomes easier to absorb microwaves. Since the upper curler main body 1A and the lower curler main body 1B are closed at a temperature lower than the boiling point of the heat storage material 6 by the shape memory effect of the drive element 16, excessive heating can be prevented, and thermal deformation and melting of the curler main body 1 can be prevented. Can be prevented.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A curler body 1 of a dielectric heating type hair curler according to the present invention is made of polymethylpentene (dielectric constant 2.12) having a low dielectric constant and a low dielectric loss so that microwaves are hardly absorbed and transmitted. , Polypropylene (dielectric constant
It is formed of a plastic material such as 2.0 to 2.3). Inner cylinder 3 housed in overlapping contact with the inner periphery of curler body 1
Examples of the heat conductive metal material 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.

The heat storage material 6 of the dielectric heat generation type accommodated in the inner cylinder 3 is a water-soluble material having a large relative dielectric constant and a large dielectric loss which absorbs microwaves transmitted through the curler body 1 and the inner cylinder 3 to generate heat. Examples include polyethylene glycol, clay, crushed rock, water and the like. The heat storage material 6 is not directly stored in the inner cylinder 3, but is also stored in the heat storage container 9 in advance.
It may be accommodated in.

An opening 4 for introducing microwaves is provided in the inner cylinder 3, and as a material of the shape memory alloy cover 12 for closing the opening 4, a Ti-Ni alloy, a Cu-Al system, a Cu-Zn system, or the like can be mentioned. Can be The recovery (operation) temperature is set to a temperature lower than the boiling point of the heat storage material 6 or slightly higher than the freezing point.
In addition to the lid 12A itself being formed of a shape memory alloy, the lid 12A is formed of aluminum, copper, duralumin, or the like having a reflectivity to high frequencies other than the shape memory alloy, Only the closing drive element 12B that connects the lid 12A to the curler body 1 includes the above-mentioned shape memory alloy. The shape of the lid 12A is formed in a conical shape or a flat disk shape corresponding to the shape of the opening 4. In the microwave oven, the hair curler is put alone or in the storage case 21. The storage case 21 is formed of polymethylpentene, polypropylene, or the like having a low dielectric constant and a low dielectric loss so as to transmit microwaves with little absorption similarly to the curler body 1.

[0013]

【Example】

(First Embodiment) FIGS. 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 insert-molded on the inner periphery of the curler body 1. Both ends of the inner cylinder 3 are formed in an open shape to form an opening 4 for microwave introduction. An opening (not shown) for introducing microwaves that penetrates the curler body 1 may also be formed in the cylinder peripheral wall 5 of the inner cylinder 3. Inside the inner cylinder 3, a heat storage container 9 made of polymethylpentene in which a heat storage material 6 made of polyethylene glycol is sealed so as to form a space 7 for absorbing the volume expansion thereof is housed by press-fitting. At this time, the heat storage container 9 is positioned and fixed in the inner cylinder 3 by providing a rib 10 on the outer circumference of the heat storage container 9 and fitting the rib 10 into the concave groove 11 provided on the inner circumference of the inner cylinder 3.

The openings 4 at both ends of the inner cylinder 3 are closed by a shape memory alloy lid 12 so as to be openable and closable. The shape memory alloy lid 12 is the lid 1
2A and a closing drive element 12B. The lid 12A is made of a metal material such as aluminum or copper, and is formed in a circular shape in a plan view, and is formed in a conical shape whose central convex portion faces the inside of the curler body 1 and the inner cylinder 3. The closing drive element 12B is formed by shaping a Ti-Ni shape memory alloy into a coil shape.
Both ends of B are integrally connected to the lid 12A and the end of the heat storage container 9, respectively.

The coil-shaped closing drive element 12B has
The shape of the coil portion is stored in a tightly contacted state so that the lid 12A and the inner cylinder 3 are brought into close contact with each other, and at normal temperature, the lid 12A is pinched by the knob 13 provided thereon as shown in FIG. 4 is in an extended state pulled out to the outside.
When the microwave is placed sideways in the microwave oven, the microwave passes through the curler body 1 and is absorbed by the heat storage material 6 through the opening 4. At this time, the microwave strikes the outer peripheral slope wall of the lid 12A and is reflected and easily introduced into the opening 4. The closing drive element 12 </ b> B absorbs the microwave and receives the heat of the heat storage material 6 that absorbs the microwave and generates heat through the heat storage container 9, and the solidification point 43 of the heat storage material 6 (polyethylene glycol).
At about 50 ° C., which is slightly higher than −46 ° C., a reverse transformation from the martensite phase to the austenite phase occurs, and at that time, a strong force is generated while returning to the original close contact state. This recovery force pulls the lid 12A to close the opening 4 (the state of FIG. 2).

At this time, it is possible to confirm that the heat storage material 6 is heated by observing the closed state of the shape memory alloy lid 12, and to apply heat deformation to the curler body 1 by heating it more than that. Melting can be prevented. Furthermore, since the opening 4 is closed with the shape memory alloy lid 12 during use, the shape memory alloy lid 12 does not hinder the hair winding, and is easy to use.

(Second Embodiment) FIG. 3 shows a second embodiment of the present invention. In this embodiment, conical recesses 14 are respectively formed on both end surfaces of the heat storage container 9 in conformity with the shape of the conical shape memory alloy lid 12. According to this, the receiving area of the microwave entering from the opening 4 can be increased, and the efficiency of absorption into the heat storage material 6 can be increased. Further, in this embodiment, since the heat storage material 6 can be filled as much as possible in the longitudinal direction of the curler body 1, uneven heating of the curled hair hardly occurs.
Other configurations are the same as those of the first embodiment.

(Third Embodiment) FIGS. 4 to 6 show a third embodiment of the present invention. In this embodiment, a cylindrical curler main body 1 made of polymethylpentene has an upper and lower split structure, that is, an upper and lower curler main body 1A, 1B having a semicircular cross-section. The aluminum inner cylinder 3 accommodated in the curler body 1 also corresponds to the upper and lower inner cylinders 3 having a semicircular cross section.
A · 3B. In the upper inner cylinder 3A and the lower inner cylinder 3B,
The impregnated body 15 such as a non-woven fabric or a woven fabric is filled with the heat storage material 6 made of polyethylene glycol penetrated to such an extent that it does not flow out even if it is melted.

The upper curler body 1A and the lower curler body 1B
They are connected by a closing drive element 16 formed of a Ti-Ni shape memory alloy into a strip-shaped hinge. The closing drive element 16 is housed in recesses 40 and 41 provided in the upper curler body 1A and the lower curler body 1B, respectively.
Are flush with the surfaces of the upper curler main body 1A and the lower curler main body 1B. The entire shape of the closing drive element 16 is stored in a flat state (see FIG. 5), and at normal temperature, as shown in FIGS.
The upper curler main body 1A and the lower curler main body 1B are opened by bending.

When the upper curler main body 1A and the lower curler main body 1B are put into a microwave oven in an open state, the drive element 16 closes at about 50 ° C. and generates a restoring force to return to the original flat state. The upper curler main body 1A and the lower curler main body 1B are closed with the recovery force (the state of FIG. 5). In addition,
A small projection 17 is provided on one mating end surface of the upper curler main body 1A and the lower curler main body 1B, and a concave portion 18 is provided on the other mating end surface of the upper curler main body 1A and the lower curler main body 1B. Are matched with each other without displacement. Upper curler body 1A
At the mating end of the lower curler main body 1B on the opposite side to the closing drive element 16, cutouts 19 and 20 are provided, into which a fingertip can be inserted when opening the same.

(Fourth Embodiment) FIG. 7 shows a fourth embodiment of the present invention. In this embodiment, the shape memory alloy lid 12 itself is
It is made of a Ti-Ni alloy and is mounted on both ends of the curler body 1. The shape memory alloy lid 12 has a bent portion 12C on the side integrally connected to the curler body 1 in a straight state (FIG. 7).
(Solid line state), the shape is stored, and the opening 4 is opened at normal temperature by bending as shown by the two-dot chain line in FIG. When placed in a microwave oven, the shape memory alloy lid 12 has a resilience to return the bent portion 12C to its original straight state at about 50 ° C., which is slightly higher than the freezing point 43 to 46 ° C. of the heat storage material 6. The opening 4 is closed (solid line state in the figure). Further, in this embodiment, the space 7 for absorbing the volume expansion of the heat storage material 6 is not formed inside the heat storage container 9 as in the first embodiment, and the end wall portion of the heat storage container 9 is used instead. The heat storage material 6 is filled by forming a thin portion or a bellows-like portion 9a to form a variable volume portion. When the heat storage material 6 generates heat and expands in volume, the end wall 9a of the heat storage container 9 expands as shown by a broken line in the figure. Other configurations are the first
This is the same as that of the embodiment.

(Fifth Embodiment) FIGS. 8 to 10 show a fifth embodiment of the present invention. In this embodiment, a dielectric heating hair curler is placed in a storage case 21 and heated by a microwave oven. The basic structure of the dielectric heating type hair curler itself is almost the same as that of the first embodiment,
An aluminum inner cylinder 3 is insert-molded into a cylindrical curler body 1 made of polymethylpentene, and a heat storage container 9 in which a heat storage material 6 made of polyethylene glycol is sealed is press-fitted into the inner cylinder 3. However, instead of forming the space 7 for absorbing the volume expansion of the heat storage material 6 inside the heat storage container 9, the end wall portion 9a of the heat storage container 9 is the same as in the fourth embodiment.
The heat storage material 6 is filled by forming a thin portion or a bellows shape to form a variable volume portion.

The lid 12A made of aluminum or duralumin which opens and closes the microwave introduction openings 4 at both ends of the inner tube 3 of the dielectric heating type hair curler, and the closing drive element 12B made of Ti-Ni shape memory alloy are: Installed on the storage case 21 side. Like the curler body 1, the storage case 21 is formed of polymethylpentene, polypropylene, or the like having a low dielectric constant and a low dielectric loss so that microwaves are transmitted with little absorption. The storage case 21 is a storage recess 2 that can store the dielectrically heated hair curler in a sideways state.
2 is formed in an upper open shape, and a lid bag 23 for accommodating the lid 12A and the closing drive element 12B is integrally formed on both left and right sides of the accommodation recess 22. Bottom 21 of storage case 21
a is formed flat so that it can be stably placed in a microwave oven. A notch 24 is provided in the storage recess 22 of the storage case 21 to make it easier to grasp the dielectric heating hair curler. The lid 12A accommodated in the lid bag 23 has an annular sliding cylinder 25 fitted inside the lid bag 23 so as to be slidable in the left-right and lateral directions, and is formed integrally with one side of the sliding body 25. An annular boss 26 having a diameter smaller than the outer diameter of the sliding body is provided. A lever 25a is provided on a part of the circumference of the sliding body 25,
The lever 25a projects from a horizontally long opening 23a provided in the upper wall of the lid bag 23.

The closing drive element 12B incorporated between the lid bag 23 and the lid 12A is formed by forming a Ti-Ni shape memory alloy into a coil shape, and the coil-shaped closing drive element 12B is in an expanded state. At normal temperature, the closed drive element 12B is stored as shown by the solid line in FIG.
Is reduced and the lid 12A is drawn into the lid bag 23.
When the dielectric heating hair curler is stored in the storage case 21 and placed in a microwave oven, the heat storage material 6 penetrates the storage case 21 and the curler body 1 and absorbs the microwave passing through the opening 4. Fever. At that time, the closing drive element 12B pushes the lid 12A to return to the original stretched state at about 50 ° C. slightly higher than the freezing point 43 to 46 ° C. of the heat storage material 6, and the annular boss 26 is moved to the end of the curler body 1. The opening 4 of the inner cylinder 3 is closed by being inscribed in the portion (in a two-dot chain line state in FIG. 8). At this time, the annular boss 26 is attached to the end wall 9 of the heat storage container 9.
is formed in a shape having an inner space 26a facing the inner space 26a, even if the end wall 9a of the heat storage container 9 expands outward due to the volume expansion of the heat storage material 6, the heat storage material 9 enters the inner space 26a,
Therefore, there is no possibility of interference with the annular boss 26.

The closed drive element 12B made of a Ti—Ni shape memory alloy absorbs microwaves slightly and generates heat. However, in order to further promote the temperature rise, the relative drive and relative permittivity which are substantially the same as the heat storage material 6 are used. A microwave-absorbing heating element 30 such as water-soluble polyethylene glycol having a large loss, water absorbed in a sponge, ferrite, and iron powder is used in combination. When used together, a boss 31 that fits inside the coil-shaped closing drive element 12B is formed to protrude inside the end wall of the lid bag 23, and an outwardly open concave portion 32 formed in the boss 31 is formed. The heating element 30 is housed and closed with a cap 33. For example, when water absorbed in a sponge is used as the heating element 30, if a small hole 34 is opened in the cap 33, steam will come out from the hole 33. Will be recognized. Further, as the heating element 30, ferrite is formed into a cylindrical shape, and is protruded inside the end wall of the lid bag 23 as shown in FIG.
When the close drive element 12B is placed in a close state or in contact with the inside, the sensitivity of the closing drive element 12B is good, and the temperature rise can be accelerated.

When the hair curler is taken out of the storage case 21 after heating, the annular boss 26 can be pulled out from the inside of the curler body 1 by holding the lever 25a and pulling the lid 12A into the lid bag 23. it can.

According to this, since the dielectric heating type hair curler is stored in the storage case 21 and heated, the microwave oven used for heating the food can be used in a sanitary manner. Since the lid 12A and the closing driver 12B are provided on the storage case 21 side, the weight of the dielectric heating hair curler can be reduced by the weight thereof.

(Sixth Embodiment) FIGS. 11 and 12 show a sixth embodiment of the present invention. In this embodiment, a case body 211 having a housing recess 22 capable of housing the storage case 21 of the fifth embodiment in a state where the dielectric heating hair curler is laid down.
And left and right lid pouches 23 and 23, each of which contains the lid 12A and the closing drive element 12B.
3 is connected to the case body 211 so as to be able to expand and contract in the left-right direction. When the hair curler is heated and placed in a microwave oven, as shown in FIG.
23 is reduced and moved so as to be close to the case body 211, and the hair curler is accommodated therein. When the hair curler is taken out of the storage case 21 after heating, the annular boss 26 can be pulled out from the end of the curler body 1 by extending the left and right lid bags 23 so as to separate them from the case body 211. it can. Other configurations are the same as those of the fifth embodiment.

[0029]

According to the dielectric heating hair curler of the present invention, the heat radiation of the heat storage material 6 is conducted to the curler main body 1 through the inner cylinder 3 made of a good heat conductor. It is advantageous that the material 6 can be uniformly heated and the curled hair can be uniformly heated and set. When heated by the heat generated by the heat storage material 6, the absorption of microwaves can be automatically cut off by the shape memory effect of the shape memory alloy lid 12, so that the curler body 1 is prevented from melting or thermally deformed due to excessive heating. It can be taken out of a microwave oven without giving a feeling of heat. In addition, since the storage case 21 is used in combination, heating can be performed hygienically with a microwave oven.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a dielectric heating hair curler according to a first embodiment in a state before heating.

FIG. 2 is a longitudinal sectional view showing the dielectric heating hair curler according to the first embodiment in a state after heating.

FIG. 3 is a longitudinal sectional view of a dielectric heating hair curler according to a second embodiment.

FIG. 4 is a longitudinal sectional view showing a dielectric heating hair curler according to a third embodiment in a state before heating.

FIG. 5 is a longitudinal sectional view showing a state in which the dielectric heating hair curler according to the third embodiment is heated.

FIG. 6 is a perspective view showing a dielectric heating hair curler according to a third embodiment in a state before heating.

FIG. 7 is a longitudinal sectional view of a dielectric heating hair curler according to a fourth embodiment.

FIG. 8 is a longitudinal sectional view showing a dielectric heating hair curler according to a fifth embodiment in a state before heating.

FIG. 9 is a perspective view of a storage case of a dielectric heating hair curler according to a fifth embodiment.

FIG. 10 is a partial sectional view showing a modification of the storage case of the fifth embodiment.

FIG. 11 is a longitudinal sectional view showing a dielectric heating hair curler according to a sixth embodiment in a state before heating.

FIG. 12 is a longitudinal sectional view showing a state in which the dielectric heating hair curler according to the sixth embodiment is taken out of the storage case after heating.

[Explanation of symbols]

1 Carla body 1A Upper curler body 1B Lower curler body 3 inner cylinder 3A Upper inner cylinder 3B Lower inner cylinder 4 opening 6 heat storage materials 7 Space 9 Thermal storage container 12 Shape memory alloy lid 12A Lid 12B ・ 16 Closed drive element 21 Storage case

Claims (4)

(57) [Claims] 1. An inner cylinder 3 made of a heat conductive metal is placed inside a tubular curler body 1 so that the outer periphery of the inner cylinder 3 is in overlapping contact with the inner periphery of the curler body 1. A heat storage material 6 of a dielectric heat generation type is housed directly or in a state stored in a heat storage container 9, an opening 4 for introducing microwaves is provided in the inner cylinder 3, and a shape memory is provided in the opening 4. A dielectric curl type hair curler, characterized in that the shape memory alloy lid (12) is made openable and closable by an alloy lid (12), and the shape of the shape memory alloy lid (12) is stored in a state where the opening (4) is closed at a temperature lower than the boiling point of the heat storage material (6). 2. The dielectric heating device according to claim 1, wherein the shape memory alloy lid includes a lid for opening and closing the opening, and a closing drive element made of a shape memory alloy for connecting the lid to the curler body. Hair curlers. 3. The dielectric-curing hair curler according to claim 1, further comprising a storage case in which the curler body is housed so as to be able to be taken in and out, and a shape memory alloy lid provided on the storage case. 4. An upper inner cylinder made of a thermally conductive metal having a semicircular cross-section inside an upper curler main body 1A. 3A, a lower inner cylinder 3B made of a thermally conductive metal having a semicircular cross section is accommodated in a superposed contact state inside a lower curler body 1B, and a dielectric heating type is disposed inside the upper and lower inner cylinders 3A and 3B. Heat storage material 6
The upper curler body 1A and the lower curler body 1B are connected by a closing drive element 16 made of a shape memory alloy.
6 is a temperature lower than the boiling point of the heat storage material 6 and the upper curler body 1A.
Characterized in that the shape is stored in a state in which the lower curler body 1B and the lower curler body 1B are closed.