JPS6343083B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION An object of the present invention is to provide a curling comb that uses a shape memory alloy, has an extremely simple structure, is easy to operate, and operates reliably.

It is known that when a so-called shape memory alloy is heated and cooled near its transformation point, a phase transformation occurs inside the metal, causing a shape change and at the same time generating a strong transformation force. In other words, if you shape this alloy into a shape that you want to memorize and then heat treat it while retaining that shape to memorize that shape, you can determine how to deform it at a temperature below the transformation point. However, when the transformation temperature is reached by subsequent heating, the shape returns to the original memorized shape with a strong transformation force. Alloys with this property are generally Ti, Ni alloys, or Cu,
It is made of Zn and x (x is a metal element that affects the properties of the memory alloy), and the physical properties of the alloy can be varied depending on the blending ratio.

The present invention mainly applies the property of shape change at the transformation point of this shape memory alloy to a curling comb.

FIG. 1 shows a commonly used type of comb, which consists of a blade part 1 for combing hair and a handle part 2. Second
The figure shows that a heating device consisting of a fan 3, a motor 4, a heater 5, etc. is built into the handle 2 to generate hot air, which is blown out through the gap between the blades 1 of the comb to create a curly hair texture. It is used for attaching.

To style your hair with the comb shown in Figure 1,
Usually, the hair held by the blade part 1 of the comb is curled and curled by the motion of the wrist while blowing hot air with a separate hair dryer. In this case, the hair dryer must be held with one hand and the above-mentioned operations must be performed with the other hand, which makes the operation very difficult and the finish unsatisfactory. To solve this problem, a device with the configuration shown in Figure 2 was developed, but this also required wrist movements to curl the hair, making it very difficult to do so.

The present invention uses a shape memory alloy in the blade portion of the comb so that the above-mentioned curling can be done automatically without relying on wrist movements. That is, the blade part 1 of the comb shown in FIGS. 1 and 2 is formed of a shape memory alloy that changes to a memorized shape at a predetermined temperature, and this shape memory alloy is shaped into a curved shape that curls the hair and heat treated. and memorize its shape. The blade portion 1 treated in this manner can be easily stretched straight by hand at room temperature, and thus can be used for combing hair in the same way as a conventional comb. When curling hair, insert the straight blade 1 between the hair, send hot air to the comb blade 1 using a hair dryer or a built-in heating device, and use this heat to curl the blade 1 as shown in Figure 3. You can curl your hair by deforming it into a pre-memorized curved shape. Further, the hair curled by the blade part 1 is curled by the hot air sent to the blade part 1, and the hair in that part is fixed in a curled state.

In addition to heating with hot air, the shape of the blade portion 1 can also be changed by directly applying current to generate heat using the electrical resistance of the shape memory alloy. Alternatively, the blade portion 1 may be formed by using a reversible shape memory alloy so that the shape is memorized so that it has a straight comb shape at high temperatures and a curved comb shape at room temperature. With this type of hair, the heated and straightened blade part 1 is inserted into the hair, and when the heating is stopped and the hair is cooled to room temperature, the blade part 1 curves and curls the hair. This is convenient when you want to curl your hair by giving it a curl over a long period of time.

As described above, the curling comb of the present invention has a hair cutting blade made of a shape memory alloy, thereby providing a curling comb with a simple structure, good operability, and reliable operation. The effect is extremely large.

[Brief explanation of the drawing]

FIG. 1 and FIG. 2 are side views showing a commonly used type of comb, respectively, and FIG. 3 is an embodiment of the present invention in which a shape memory alloy is used for the blade portion of the comb shown in FIGS. 1 and 2. It is a perspective view showing a blade part. 1...blade part, 2...handle part.

Claims (1)

[Claims] 1. A curling comb whose hair cutting blades are made of a shape memory alloy, and the shape memory alloy is memorized so that its shape changes into a curved shape for curling hair due to temperature changes.