JPH0748161Y2 - Hair straightening iron - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a hair straightening iron used to remove curl of curly hair and to make it straight hair.

(Prior Art) As a hair straightening iron, a conventional scissors-shaped electric iron whose cross section is shown in FIG. 4 has been widely used. The cross-sectional shape of each of the sandwiching pieces 1 and 2 was as shown in FIGS. 4 (a) and 4 (b).

This hair straightening iron is a washing and drying method for straightening hair by straightening the hair with a wave agent composed of a first liquid such as an aqueous solution of thioglycolic acid and a second liquid such as an aqueous solution of sodium bromate. Often used at times, the hair H is stretched in the longitudinal direction by sandwiching the hair H between the sandwiching pieces 1 and 2 and squeezing it in the direction of the arrow.

(Problems to be Solved by the Invention) In a hair straightening iron having a sandwiching piece with a cross section as shown in FIG. 4, (a) in the case of a serrated shape, the portions meshing with each other are acute-angled and the spacing between the sandwiching pieces is large. Is evenly spaced in each part, and if the pinching force is small, the hair will not stretch, and if it is large, it will be difficult for the hair to pass through, and the hair will not be squeezed and will simply be pulled. Only a pinching effect or a local pulling effect is generated when pinching, and even if the hair is squeezed with this, the effect of stretching the hair is poor.

The present invention solves the problems found in the prior art by making the shapes of the opposing surfaces of the sandwiching pieces effectively act on the extension of hair.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention has a trapezoidal shape in which the cross-sectional shape narrows toward the tip side on at least one of the sandwiching surfaces of the sandwiching pieces that face each other. A ridge having a shape corresponding to the ridge is formed on the other sandwiching surface facing the ridge so as to fit the ridge, and the ridge and the ridge are completely fitted. If the gap is not open and the upper bottom surface of the ridge and the lower bottom surface of the concave ridge are larger than the distance between the side wall surface of the ridge and the side wall surface of the concave ridge, Each sandwiching piece is provided along the longitudinal direction.

In addition, on one of the sandwiching surfaces described above, a trapezoidal convex strip whose cross-sectional shape narrows toward the tip and a trapezoidal concave strip whose cross-sectional shape widens toward the open side are respectively arranged along the longitudinal direction of the sandwiching piece. Alternately provided so that the other ridge, the ridge having a shape corresponding to the ridge, and the ridge having a shape corresponding to the ridge are fitted to the other clamping surface along the longitudinal direction of the sandwiching piece. It is more effective if it is provided.

Further, it is preferable that each sandwiching piece has a built-in heater.

(Function) Since the hair straightening iron of the present invention has trapezoidal cross-sectional shapes of both holding pieces, the hair is loose depending on the degree of meshing between the concave and convex lines of the holding piece. When the hair is squeezed because there is a space to pass through and a space to pass while being strongly pressed and squeezed, the pressure force and moderateness against the hair softened by the attached wave agent Alternate buffering is provided, which allows the waving agent to extend while increasing the penetrating power of the hair, and as a result, the hair can be sufficiently extended.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 (a) and 1 (b), the hair straightening irons 10 and 10 'of the present invention are formed in the shape of a pair of scissors having the sandwiching pieces 1 and 2 and an external power source (not shown). ), The heater built into each holding piece generates heat by being energized.

As shown in FIG. 1C, the sandwiching pieces 1 and 2 are trapezoidal protrusions 3 and 4 each having a cross section narrowed toward the tip side on the sandwiching surface, and the protrusions 3 or 4 are fitted to each other. Trapezoidal recesses 3'and 4'which widen towards the possible open side are formed in the longitudinal direction. The convex ridges 3 and the concave ridges 3'formed on the sandwiching piece 1 can be fitted into and engaged with the concave ridges 4'and the convex ridges 4 formed on the sandwiching piece 2, respectively. There is.

In order to straighten and straighten the curly hair while using the first and second liquids of the wave agent, the hair H is sandwiched by the sandwiching pieces 1 and 2 as shown in FIG. When the hair is sandwiched as described above and the sandwiching piece is moved in the direction of the arrow A while being sandwiched, the hair H is formed into the edges E1 and E2 formed by the convex stripes 3 and 4 and the concave stripes 3'and 4 '. , E3, E4, E5, E6, so that the waving agent can easily spread to the hair H, and the cystine bond of the hair given to the hair by the waving agent can be cut or trimmed to normalize the hair. The medicinal component that brings about smooth extension works well on the hair, and the straight hair is completed.

FIG. 3 is a view for explaining the effect of the shape of the facing surfaces of the sandwiching pieces of the hair straightening iron according to the present invention on the hair.

When the sandwiching pieces 1 and 2 are completely engaged with each other, the intervals α and β between the sandwiching pieces 1 and 2 are both 0, but when the hair H is sandwiched between the sandwiching pieces 1 and 2, α is >Β> 0. That is, hair H
Is tightly compressed when passing through the gap β, and is relaxed when passing through the gap α. Moreover, when the hair H moves in the direction of the arrow B, the hair H is squeezed at each part of the edges E1, E2, E3, E4, E5, E6, so that the hair alternates between the wide gap α and the narrow gap β. It is given while smoothly alternating between looseness and extension while passing, and is strongly squeezed at 6 edges. In addition, by providing a wide area α against a narrow area β, contraction can be performed as necessary. A hair straightening agent or a creamy hair protector (which protects the hair from the heat of the iron) is squeezed out from the β region to the α region on the arrow B direction side and spreads in the α region, so that the hair within the α region Is sufficiently evenly distributed in the hair, and the hair in which the drug is distributed enters the α region and is pressed so that the drug sufficiently penetrates into the hair,
As described above, the phenomenon that the cystine bond of the hair is broken or trimmed to straighten the hair effectively occurs.

The advantage of having a trapezoidal cross-sectional shape, for example, a trapezoidal wave shape, is that a wide gap α and a narrower gap β can be obtained, but another major advantage is that the gap can be changed depending on the opening degree of the sandwiching piece. The size of β changes. That is,
The opening β of the gripping piece changes as the amount of hair changes, and the gap β changes at the same time.Therefore, the gap β has enough freedom to increase or decrease the amount of hair to be handled, and any pressure can be set freely in the gap β. It can be added to the hair.

If the cross-sectional shape is a rectangular wave, the gap β will be constant regardless of the opening of the sandwiching piece, so it is necessary to give a certain dimension assuming an appropriate amount of hair, and If the amount is too large, it is not possible to pinch the hair between the pinching pieces, so there is the drawback that the amount of hair must always be considered in the operation of the iron, and the pressure applied to the hair is also a fixed value determined by the size of the gap β. Limited to pressure.

(Effect of the Invention) The hair straightening iron according to the present invention is, as described above,
Since it has a function of giving an operation of loosening after applying a pressing force to the hair to be straightened, it is more effective for straightening the curly hair than the conventional one, to give the hair stretchability.

[Brief description of drawings]

FIG. 1 is a view for explaining an iron for straightening hair according to an embodiment of the present invention, FIG. 2 is a sectional view of a holding piece of the iron of the present invention, and FIG. 3 is a sectional view of the holding piece of the iron of the present invention. FIG. 4 is a view for explaining the effect of the shape on the hair, and FIG. 4 is a cross-sectional view of a sandwiching piece of a conventional iron. 1,2… Clamping piece, H… Hair 3,4… Convex line 3 ′, 4 ′… Concave line E1, E2, E3, E4, E5, E6… Edge

Claims (3)

[Scope of utility model registration request] 1. A sandwiching surface of two opposing sandwiching pieces, at least one sandwiching surface having a trapezoidal ridge having a trapezoidal cross-sectional shape narrowing toward the tip side is provided at the other sandwiching surface facing the ridge. Is a concave strip having a shape corresponding to the convex strip so as to fit the convex strip, and when the convex strip and the concave strip are not completely fitted and a gap is opened, It is provided along the longitudinal direction of each sandwiching piece such that the distance between the upper bottom surface and the lower bottom surface of the concave stripe is larger than the distance between the side wall surface of the convex stripe and the side wall surface of the concave stripe. An iron for straightening hair. 2. On one of the sandwiching surfaces, a convex strip having a trapezoidal cross-sectional shape narrowing toward the tip and a concave strip having a trapezoidal cross-sectional shape expanding toward the open side are arranged along the longitudinal direction of the sandwiching piece. Are alternately provided on the other clamping surface so that the convex strips and the concave strips having a shape corresponding to the concave strips and the convex strips are fitted to the other sandwiching surface along the longitudinal direction of the sandwiching piece. The hair straightening iron according to claim 1, wherein the irons are provided alternately. 3. The hair straightening iron according to claim 1 or 2, wherein each sandwiching piece has a heater built therein.