JPH05115319A - Hair curler apparatus - Google Patents

Abstract

PURPOSE:To achieve a stopping of heating accurately by allowing the temperature of a hair curler to reach a specified temperature. CONSTITUTION:In a hair curler apparatus which comprises a hair curler 1 containing a yoke and a heater 2 having a heating means for heating the hair curler 1 by electromagnetic induction heating, a heating rod 21 with the heater 2 has a plurality of stages 31, 32 and 33 with diameters thereof corresponding to the hair curlers 1 different in inner diameter at the bottom thereof. These stages contacting the internal surface of the hair curlers with a corresponding inner diameter have temperature sensors 34, 35 and 36 arranged to stop a heating operation detecting the temperature of the hair curlers inside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair curler device comprising a hair curler and a heater for heating the hair curler by electromagnetic induction heating.

[0002]

2. Description of the Related Art There is a hair curler device including a hair curler formed in a tubular shape and a heater for heating the hair curler by electromagnetic induction heating. This is as shown in FIG.
A hair curler 1 having a built-in cylindrical yoke 10 and a recess 20 in which the hair curler 1 can be detachably accommodated.
And a heating container 2 that also serves as a storage container
Is provided with a heating rod 21 to be inserted into the hair curler 1 in the center of the recess 20. The heating rod 21 here is formed by winding an induction coil 23 around a shaft 22 made of a ferrite magnet.

As shown in FIG. 5, the induction coil 23 heats the hair curler 1 by induction when a predetermined high frequency pulse current is passed by an electromagnetic induction heating circuit 24 including a microcomputer, an oscillation circuit and a drive circuit. It is a thing. Also, the electromagnetic induction heating circuit 2 here
Reference numeral 4 includes a detection circuit for detecting the current value flowing in the induction coil 23 or its change amount, or the voltage value, the electric resistance value, or these change amounts for heating control, and indirectly detects the temperature of the hair curler 1. The electromagnetic induction heating is stopped by the output of the detection circuit to be detected. Further, the electromagnetic induction heating circuit 24 is installed below the heating rod 21 to determine whether the hair curler 1 is normally mounted in the recess 20 or whether the hair curler 1 is pulled out during heating. Alternatively, a search coil 25 consisting of a one-turn coil for detecting with an induced current is connected, and a thermistor 26 for detecting an abnormal temperature rise of the heating rod 21 is further connected.

[0004]

Here, the value detected by the above detection circuit changes due to subtle differences such as material variations and shape variations of the yoke 10 in the hair curler 1, and also the ferrite magnet in the heating rod 21. It also changes depending on the component of the shaft 22 and the characteristics of the induction coil 23, and the variation of the detection circuit itself is large. Therefore, the difference between the actual temperature of the hair curler 1 and the value detected by the detection circuit is very large. That is, FIG.
As shown in, as the temperature judgment standard of the hair curler 1,
Although the set value S indicated by the solid line is provided, if there is a hair curler 1 having the characteristics indicated by the dotted lines A and B due to the above variation, for example, when the heating current indicated by α is detected, the detection circuit The temperature of the curler 1 is judged to be 100 ° C, but the actual temperature of the hair curler 1 is 140 ° C or 6
Since there is a possibility that the temperature is 0 ° C., the hair curler 1 may be deformed in the former case, and the characteristic may be poor due to insufficient temperature in the latter case. Further, it takes a high cost to suppress the variation.
This problem becomes more serious when considering heating a plurality of types of hair curlers 1 having different sizes (the size of the yoke 10 is different) with a single heating rod 21.

The present invention has been made in view of the above points, and an object of the present invention is to provide a hair curler device capable of accurately stopping heating when the temperature of the hair curler reaches a predetermined temperature. To provide.

[0006]

DISCLOSURE OF THE INVENTION The present invention, however, provides a hair curler device comprising a hair curler having a yoke built therein and a heater having a heating means for heating the hair curler by electromagnetic induction heating. The heating rod provided at the bottom of the hair curler has a plurality of steps having diameters corresponding to the hair curlers having different inner diameters, and these step portions with which the inner surfaces of the hair curlers having the corresponding inner diameters are in contact, the temperature of the hair curler It is characterized in that a temperature sensor for detecting the temperature and stopping the heating operation is provided.

According to the present invention, in order to stop the heating by detecting the temperature of the hair curler of each inner diameter by the temperature sensor arranged in the step portion of the corresponding diameter, the heating is always stopped at an appropriate time. Is.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiment. In FIG. 1, a heating rod 21 is provided upright in the center of a hair curler mounting recess 20 provided in a heater 2. There is. This heating rod 21 is provided with a shaft 22 made of a ferrite magnet and an induction coil 23 inside thereof, and is provided with a recess 20.
The hair curler 1 which is attached to the hair curler 1 and through which the heating rod 21 is inserted is heated by electromagnetic induction heating. 10 in the figure
Is a yoke provided in the hair curler 1.

The heating rod 21 is provided with step portions 31, 32, 33 having diameters corresponding to the hair curlers 1 having different inner diameters in the lower portion thereof, and inside each step portion 31, 32, 33. Temperature sensors 34 and 3 respectively
5, 36 are provided. Now, if the hair curler 1 having a certain diameter is attached to the heating rod 21 and induction heating is performed, the hair curler 1 makes its inner surface contact the corresponding step portions 31, 32, 33, and the hair curler 1 The temperature is detected by the temperature sensors 34, 35, 36 in the contacting step portions 31, 32, 33, and is hardly affected by the outside air temperature at this time. When the temperature detected by the temperature sensors 34, 35, 36 reaches or exceeds the predetermined temperature, heating is stopped. If the size of the hair curler 1 is different, only the temperature sensors 34, 35, 36, which detect the temperature, are changed, and the heating is stopped at the appropriate temperature.

[0010]

As described above, according to the present invention, the temperature of the hair curler of each inner diameter is detected by the temperature sensor arranged on the stepped portion of the corresponding diameter and heating is stopped at an appropriate time at all times in order to stop the heating. Therefore, the hair curler can be accurately stopped when the temperature of the hair curler reaches a predetermined temperature.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment.

FIG. 2 is a cross-sectional view showing a state in which another hair curler of the above is attached.

FIG. 3 is a sectional view showing a state in which another hair curler of the above is attached.

FIG. 4 is a cutaway side view of a conventional example.

FIG. 5 is a circuit diagram of the above.

FIG. 6 is a characteristic diagram of the above.

[Explanation of symbols]

 1 Hair curler 2 Heater 31, 32, 33 Step 34, 35, 36 Temperature sensor

Claims (1)

[Claims] 1. A hair curler device comprising a hair curler having a built-in yoke, and a heater having a heating means for heating the hair curler by electromagnetic induction heating, wherein a heating rod provided in the heater is provided at a lower portion thereof. The hair curlers with different inner diameters are provided with a plurality of steps each having a corresponding diameter, and the steps where the inner surface of the hair curlers with the corresponding inner diameters are in contact with each other detect the temperature of the hair curlers and stop the heating operation. A hair curler device having a sensor.