JPH0956444A - Hair rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow repeated use of a heat-generating hair rod, by providing a switch which starts crystallization involving heat-generation by applying physical stimulation to liquid phase sodium acetate trihydrate in at least one end of a cylinder containing the liquid phase sodium acetate trihydrate. SOLUTION: Liquid phase sodium acetate trihydrate is filled into a cylinder body 1, a cap 2 comprising a circumferential side wall 3 and an elastic plate 4 is fitted to both ends thereof, and the cylinder body 1 is sealed. When a switch 5 provided in the center of the elastic plate 4 is pressed, the elastic plate 4 is depressed, a pressing shaft 6 advances. When hairs are wound to a hair rod and the hairs are fixed by spanning a clasping band to band grooves 11 on both sides, and the switch 5 is pressed, heat is generated automatically. The switch 5 makes the pressing shaft 6 press a screw 9 to come into contact with a hit plate 7 slightly. Then, physical stimulation which crystallizes sodium acetate trihydrate occurs and produces crystallization heat.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair curler rod, that is, a hair rod. More specifically, it relates to a hair rod that generates heat.

[0002]

2. Description of the Related Art Conventionally, as a hair rod that generates heat, a powdery heating element mainly made of metal powder similar to that of a so-called disposable pocket furnace is enclosed, and heat generated when the powdery heating element is exposed to air and oxidized. There is a commercially available product that is made to generate heat.

[0003]

However, in the case of the above-mentioned conventional hair rod, since it generates heat when it is exposed to air before use, it requires strict packaging and cannot be used repeatedly, so it must be disposable. There is a problem that it is wasteful and costly. Therefore, it can be used only for a very limited purpose such as travel, and is unsuitable for daily use or use in a beauty salon where it is frequently used.

It is an object of the present invention to allow a hair rod that generates heat to be used repeatedly, and to make it possible to use it daily and in a beauty salon.

[0005]

To this end, according to the first aspect of the present invention, at least one end of the tubular body enclosing the liquid-phase sodium acetate trihydrate is physically attached to the liquid-phase sodium acetate trihydrate. A switch is provided to stimulate and start crystallization accompanied by heat generation.

According to a second aspect of the present invention, in the first aspect of the invention, the switch is elastically pushed to rub the metals together in the liquid phase sodium acetate trihydrate.

According to a third aspect of the present invention, in the second aspect of the present invention, a band groove to which a stop band is attached is formed at both ends, and when the stop band is attached to the band groove, the switch is pressed to a position where the stop band is pressed. Is to be located.

According to a fourth aspect of the present invention, in the third aspect of the present invention, while the synthetic resin pressing shaft is attached to the bottom of the switch, the metal hit plate is fixed across the inside of the tubular main body to fix the switch. At the position where the pressing shaft presses when pressing,
The metal screw that penetrates the hit plate is fixed with a nut with a slight slack.

According to a fifth aspect of the present invention, in any one of the second to fourth aspects, at least one end of the tubular main body is
Sealed by an elastic plate that can be elastically pushed inward,
The switch is attached to this elastic plate.

[0010]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 1, the hair rod of the present invention has a cylindrical main body 1 in which caps 2 are fitted and sealed at both ends. The cylindrical main body 1 has an hourglass shape with a slightly reduced center so that the hair can be easily wrapped around it.

A liquid phase sodium acetate trihydrate is enclosed in the cylindrical body 1. Sodium acetate trihydrate is obtained by neutralizing acetic acid with sodium hydroxide or sodium carbonate or by adding sodium sulfate to calcium acetate and filtering,
It can be obtained by evaporating the filtrate. This sodium acetate trihydrate is a crystalline substance having a melting point of 58 ° C., and is encapsulated in the cylindrical main body 1 as a liquid phase by heating above the melting point.

[0013] Sodium acetate trihydrate has a property that, when a physical stimulus is given in a liquid phase state, crystallization is started around the stimulus and the crystallization is propagated. Further, heat of crystallization is generated during this crystallization. In the present invention, the heat of crystallization is utilized to heat the hair rod. Also, the crystallized sodium acetate trihydrate can be returned to the liquid phase by heating it above its melting point. Since the phase state is maintained, it is possible to repeatedly generate heat.

The cap 2 is provided with a mechanism for crystallizing the liquid phase sodium acetate trihydrate by applying a physical stimulus.

As clearly shown in FIG. 2, the cap 2
Is composed of a peripheral side wall 3 and an elastic plate 4 provided inside the peripheral side wall 3, and is fitted into both ends of the cylindrical main body 1 to seal the cylindrical main body 1. The elastic plate 4 has a bellows shape with concentric folds and can be elastically pushed inward.

A switch 5 is provided at the center of the elastic plate 4, and a pressing shaft 6 is provided from the bottom of the switch 5.
Project into the tubular body 1. The pressing shaft 6 is made of synthetic resin integrated with the switch 5, and when the switch 5 is pressed, the elastic plate 4 is elastically pushed inward, so that the pressing shaft 6
Is going to move forward.

In front of the pressing shaft 6, a hit plate 7 is fixed across the cylindrical body 1. The hit plate 7 is an elongated metal plate as shown in FIG. 3, has a through hole 8 in the center, and a metal screw 9 penetrating the through hole 8 has a nut 1
It is fixed to the hit board 7 by 0. Screw 9 above
Is provided at a position where it is pressed by the tip of the pressing shaft 6 that moves forward when the switch 5 is pressed. With this pressing, the nut 10 is slightly loosened so that the screw 9 slightly rubs against the hit plate 7. It is clamped and fixed.

On the other hand, the peripheral side wall 3 of the cap 2 is formed with a band groove 11 to which a stop band (not shown) for stopping the hair wound around the hair rod is put. The switch 5 is arranged at a position where it is pressed by the stop band when it is hung through the band grooves 11 facing each other through the stop band.

Next, a method of using the above-described hair rod of the present invention will be described.

First, the hair is wrapped around the hair rod in which the encapsulated sodium acetate trihydrate is in the liquid phase, and rubber band-like stop bands are hung over the band grooves 11 at both ends to stop the hair.

Although the switch 5 may be pushed by hand in this state, if the switch 5 is pushed inward by the stop band as described above, heat is automatically started only by applying the stop band. .

That is, when the switch 5 is pressed and the pressing shaft 6 presses the screw 9, the screw 9 slightly rubs against the hit plate 7. Since the periphery of the hit plate 7 is filled with liquid-phase sodium acetate trihydrate, rubbing between the metals serves as a physical stimulus for crystallizing the liquid-phase sodium acetate trihydrate, and the vicinity of the screw 9 The crystallization that started in (3) spreads to the whole and heat of crystallization is generated along with this crystallization, and the hair rod generates heat. Since the hair rod around which the hair is wrapped will generate heat, the degree of permanent application is improved and the time and effort for external heating can be omitted.

Although the sodium acetate trihydrate in the present hair rod that has been subjected to the hair setting as described above is crystallized, when it is heated above its melting point, for example, by immersing it in hot water, it becomes in the liquid phase again. Can be returned to. The liquid sodium acetate trihydrate does not crystallize even if the temperature is lowered to room temperature unless physical irritation is applied, so that the same use can be repeated.

As a physical stimulus for crystallizing the sodium acetate trihydrate in the liquid phase, rubbing between metals is used to prevent inadvertent crystallization and to easily obtain crystallization when necessary. There are advantages. Specifically, as described above, the screw 9 tightened and fixed by the nut 10 does not rub against the hit plate 7 unless it is strongly pressed, so that careless initiation of crystallization can be prevented. Further, the reason why the pressing shaft 6 is made of synthetic resin is to prevent inadvertent crystallization due to friction between the pressing shaft 6 and the screw 9.

In the above example, similar caps 2 are fitted on both ends of the tubular body 1, but the cap 2 with the switch 5 as shown in FIG. It may be provided at one end. Further, the elastic plate 4 may be a flat plate as long as the elastic plate 4 does not have a bellows shape as in the above example, as long as it can be elastically pushed inward.

The switch 5 may be elastically pushed in by using a spring like a general push button, but elastically by using the elasticity of the elastic plate 4 as in the above example. It is preferable to allow it to be pushed in because the structure can be simplified.

The amount of sodium acetate trihydrate enclosed in the liquid phase is
It is preferable to set the temperature in consideration of the temperature required for the hair setting, the maintaining time of the temperature, and the like, as well as the weight that does not burden the wearer.

The tubular body, cap, etc. constituting the present hair rod can withstand the heat generated by the crystallization of liquid phase sodium acetate trihydrate and the heating above the melting point of the crystallized sodium acetate trihydrate. In consideration of the workability and economy, it is preferable to use a heat-resistant synthetic resin.

[0029]

INDUSTRIAL APPLICABILITY The present invention is as described above, and is economical because it can be repeatedly used not only by increasing the heat of the hair rod itself to enhance the setting power, but also by using it daily. And can be used in beauty salons.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a hair rod of the present invention.

FIG. 2 is a cross-sectional view near the cap of the hair rod shown in FIG.

FIG. 3 is an enlarged plan view of the hit plate shown in FIG.

[Explanation of symbols]

 1 tubular body 2 cap 3 peripheral side wall 4 elastic plate 5 switch 6 pressing shaft 7 hit plate 8 through hole 9 screw 10 nut 11 band groove

Claims (5)

[Claims] 1. A switch for physically stimulating the liquid-phase sodium acetate trihydrate to start crystallization accompanied by heat generation, at least at one end of a tubular body in which the liquid-phase sodium acetate trihydrate is encapsulated. A hair rod characterized by being provided with. 2. The hair rod according to claim 1, wherein the switch is a member for rubbing the metal members in the liquid phase sodium acetate trihydrate by being elastically pushed. 3. A band groove to which a stop band is applied is formed at both ends, and a switch is located at a position where the stop band is pressed when the stop band is applied to the band groove. The hair rod according to claim 2. 4. A push shaft made of synthetic resin projects from the bottom of the switch, while a hit plate made of metal is fixed across the inside of the tubular body, and the push shaft pushes when the switch is pushed. At the position, a metal screw that penetrates the hit plate,
The hair rod according to claim 3, wherein the hair rod is tightened and fixed with a nut with a slight looseness. 5. At least one end of the tubular body is sealed by an elastic plate that can be elastically pushed inward,
The hair rod according to any one of claims 2 to 4, wherein a switch is attached to the elastic plate.