JPS6216965Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a hair iron.The purpose of the invention is to prevent the temperature-indicating layer from being removed by hair, and to make it possible to see through the display window the areas that have not changed color due to deterioration of the temperature-indicating layer. There is no hair iron provided.

In the case of a conventional hair iron of this kind, as shown in FIG. As a result, the temperature-indicating layer 81 peeled off from the end surface 83 due to the wrapping and squeezing operations of the hair 82, and when the temperature-indicating layer 81 fell off, a portion of the temperature-indicating layer that did not change color due to aging occurred. As shown in (b), the non-discolored area (a) was visible from the outside, making it unsightly.

The present invention has been devised in view of the above-mentioned drawbacks, and will be explained below with reference to Examples. In Fig. 2, reference numeral 1 denotes a heating element consisting of a positive temperature coefficient thermistor, which is sandwiched between a pair of heat exchanger plates 3 having a semicircular cross section, which are press-fitted into the heater pipe 2 and held as shown in Fig. 3. These constitute the heat generating section 4. The heater pipe 2 is equipped with a press-fit holding protrusion 30 and a group of small protrusions 31 over the entire length in the axial direction on its outer periphery, and has a heat storage part 8 for generating steam at the tip.
have. Further, the central tip surface of the heat storage section 8 serves as a steam generation surface 9, and the peripheral portion serves as a steam relief groove 10. 6 is a blitzle 5 for wrapping hair on the outer peripheral surface
A metal pipe 7 that maintains the overall strength and serves as a heat transfer body is disposed concentrically on the inner circumferential surface, and the heat generating part 4 is concentrically arranged within the metal pipe 7. The heat generating portion 4 is press-fitted and supported by the press-fit holding protrusion 30 .

A cap 12 for slidably holding a tank block 11 serving as water supply means is press-fitted and supported at the tip of the metal pipe 7 by a bead protrusion 13. A water absorbing body 41 is provided on the end surface of the tank block 11 on the side of the heat generating part 4, and a conical coil-shaped spring 16 is disposed between the water absorbing body 41 and the bead protrusion 13 provided on the metal pipe 7. The tank block 11 is urged in the protruding direction, and the water absorbent body 41
A steam generation chamber 42 is formed at a distance between the heat storage section 8 and the heat storage section 8 . The steam generation chamber 42 communicates with a steam cavity 43 partitioned into a plurality of chambers by a press-fit holding protrusion 30 between the outer periphery of the heat generating part 4 and the inner periphery of the metal pipe 7. The O-ring 14 attached to the outer periphery of the tank block 11 and the sealing 15 provided at the base end of the heat generating part 4 are in contact with the inner periphery of the metal pipe 7, thereby creating a closed space. It communicates with the outside only through a steam hole 32 provided in.

The metal pipe 7 and the molded pipe 6 are both fixed to the tip of a handle 20 which is divided into two pieces with a screw 21. The handle 20 has a concave concave groove 83 on the outer periphery near the tip, and is connected to the rotatable joint 22 from the rear end.
A power cord C connected by a power cord C is led out, and a power indicator lamp 23 and a reflector plate 24 are attached to the tip.

When the heating element 1 and the power indicator lamp 23 are connected to a power source and the heating element 1 generates heat, this heat heats the heater pipe 2 through the heat transfer plate 3 or directly. The heat of the heater pipe 2 heats the metal pipe 7 by radiation and convection, and also heats the metal pipe 7 by heat transfer through the press-fit holding protrusion 30, which also serves as a positioning member for the heat generating part 4 with respect to the metal pipe 7. . It is preferable that the number of press-fit holding protrusions 30 is three or more in order to uniformly heat the metal pipe 7 in the circumferential direction. The small protrusions 31 are intended to increase the surface area of the heater pipe 2.

This hair iron heated as described above can generate steam by operating the tank block 11 and supply this steam to the outer circumference of the forming pipe 6. That is, by pushing the tank block 11 against the spring 16, the water absorbing body 4
1 is brought into contact with the steam generation surface 9, steam is generated in the steam generation chamber 42. This steam enters the steam cavity 43 from the steam relief groove 10 and is discharged from the steam hole 32. Therefore, the hair is wrapped around the molded pipe 6 using the brittle 5 which is integrally molded with the molded pipe 6, and the hair is heated to an appropriate temperature by the heat passing through the heat generating part 4 and the metal pipe 7. By pushing in the tank block 11 by hand to generate steam, the steam is supplied to the coiled hair through the steam hole 32, and the hair can be quickly styled without damaging the hair or the scalp. be.

By the way, a recess 84 is formed in the upper part of the metal pipe 7 at the end on the side of the grip 20, and a temperature-indicating layer 81 in the form of a disc-shaped tape, for example, is stuck to this recess 84. 81, the formed pipe 6 is provided with an indicator window 85 that is concentric with the temperature indicating layer 81 and has a diameter P sufficiently smaller than the diameter Q of the temperature indicating layer 81, so that the temperature of the metal pipe 7 reaches the appropriate temperature. Display window 8
The information is displayed by a temperature-indicating layer 81 that changes color through the temperature control layer 5.

In the present invention, a temperature-indicating layer is provided on a part of the outer surface of the metal pipe, and an indicator window is formed in the molded pipe, which is concentric with this temperature-indicating layer and smaller in area than the temperature-indicating layer so that the end surface of the temperature-indicating layer cannot be seen from the outside. This prevents hair from getting entangled with the end surface of the temperature-indicating layer, so the temperature-indicating layer will not fall off due to hair during use, and even if a non-color-changing layer is formed on the temperature-indicating layer from the end surface side due to sublimation phenomenon. It takes a long time for the non-discoloration layer to become visible from the outside through the display window, and this has the effect of preventing unsightly appearance for a long period of time.

[Brief explanation of the drawing]

FIG. 1a is an enlarged cross-sectional view of the temperature-indicating layer portion of the conventional example, FIG. 1b is an explanatory top view of the non-discolored portion of the temperature-indicating layer, and FIG. 2 is a cross-sectional view of an embodiment of the present invention. Third
The figure is a cross-sectional view taken along the line X--X in FIG. 2 of the same as above, and FIG. 4 is an enlarged cross-sectional view of essential parts of the same as above, 6 is a molded pipe, 7 is a metal pipe, 81 is a temperature-indicating layer, and 85 is a display window.

Claims (1)

[Scope of utility model registration request] In a hair iron, a metal pipe is arranged so as to be in contact with the inner peripheral surface of a molded pipe with brittle for wrapping hair on the outer peripheral surface, and a heat generating source is housed inside this metal pipe. A hair iron in which a temperature-indicating layer is provided, and a display window is formed in a molded pipe, which is concentric with the temperature-indicating layer and smaller in area than the temperature-indicating layer so that the end surface of the temperature-indicating layer cannot be seen from the outside.