JP5903618B2 - Curling iron - Google Patents

Description

The present invention relates to a hair iron, and more particularly, to a curling iron that can curl hair.

  As a hair iron capable of curling hair, as shown in Patent Document 1, a substantially cylindrical member and a member capable of winding hair around the outer peripheral surface are in contact with the outer peripheral surface of this member. What consists of a hair pinching member which can be made to be known is known. The hair is curled on the hair by winding the hair around the outer peripheral surface of the member and pressing the hair with a hair pinching member and applying heat to the hair.

  By the way, in curling, there are a case where the size of the curl (curvature radius) is desired to be increased and a case where it is desired to be reduced. On the other hand, in the thing of the said patent document 1, since the magnitude | size of curling is decided with the diameter of the said member, since only one kind of curl can be obtained, the magnitude | size of curl If it is desired to change the diameter, another hair iron with a different diameter of the member must be used.

JP-A-4-244107

The present invention has been made in view of the above problems, and an object thereof is to provide a curling-compatible hair iron that can easily obtain curls having different sizes.

The curling-compatible hair iron according to the present invention is provided with a pair of hair clip portions, and both hair clip portions are formed by convex curved surfaces each having a cross-sectional shape excluding the opposed hair clip surfaces, each having a superior arc. The cross-sectional circumference of one hair pinching portion excluding the hair pinching surface is longer than the cross-sectional circumferential length of the other hair pinching portion excluding the hair pinching surface, and the ratio of the cross-sectional circumferential lengths of both hair pinching portions is 1. .53: 1 or more, and the cross-sectional shape of the hair pinching portion having the longer cross-sectional circumference is a flat ellipse with a small thickness in the hair pinching direction .

  The cross-sectional shape of the hair pinching portion having the longer cross-sectional circumference is preferably a flat ellipse.

  In addition, the hair pinching surface in each hair pinching part is formed as a flat surface, and a step is provided between the hair pinching surface and the other part forming the convex curved surface. This step is preferably smaller in the hair pinching portion having a longer cross-sectional circumference.

  After pinching the hair on the hair pinching surface, rotate the hair iron half-turn and slide the hair on the hair pinching part with the longer cross-sectional circumference to create a larger curl, and the hair on the hair pinching part with the shorter cross-sectional peripheral length The curl can be made smaller, and a plurality of curls can be attached with one hair iron.

It is a cross-sectional view of an example of an embodiment of the present invention. It is a front view same as the above. It is a perspective view same as the above. It is a front view of the open state same as the above. It is a perspective view of the closed state same as the above. It is a top view same as the above. It is a longitudinal cross-sectional view same as the above. It is a bottom view same as the above. It is explanatory drawing of a curl diameter ratio same as the above and a cross-sectional circumference ratio.

  The present invention will be described in detail with reference to the illustrated embodiment. As shown in FIG. 2 and the subsequent figures, the hair iron 1 in the illustrated example is configured such that one end of a pair of hair clip portions 2 and 3 is rotatably connected by a shaft 4. Therefore, the hair sandwiching portions 2 and 3 are urged in the direction of opening each other by the spring 5 shown in FIG. 7 disposed between the both hair sandwiching portions 2 and 3. In addition, heating portions 20 and 30 using a PTC heater or the like as a heat source are disposed on the opposing surfaces of the both hair sandwiching portions 2 and 3. In the figure, 7 is a switch.

  And while the hair pinching surfaces 21 and 31 which become the opposing surfaces in both the heating parts 20 and 30 are each flat surfaces, the cross-sectional shape excluding the hair pinching surfaces 21 and 31 in both hair pinching parts 2 and 3 is As is apparent from FIG. 1, both convex surfaces are formed.

  Further, out of the two hair pinching portions 2 and 3, the hair pinching portion 2 has a larger cross-sectional shape than the hair pinching portion 3, and the cross-sectional shape of the hair pinching portion 3 excluding the hair pinching surface 31 is substantially semicircular. On the other hand, the cross-sectional shape excluding the hair pinching surface 21 of the hair pinching portion 2 is a flat ellipse.

  When curling the hair, the hair iron 1 is rotated halfway while the hair is sandwiched between the heated hair clamping surfaces 21 and 31, and the hair is slid on the hair clamping part 2 or the hair clamping part 3 Although curling the hair, it is possible to obtain a large curl by sliding the hair toward the hair pinching part 2 side, and by sliding the hair toward the hair pinching part 3 side by changing the direction of half rotation, Can curl.

  Moreover, in this hair iron 1, since the hair clamping surfaces 21 and 31 of the heating parts 20 and 30 are formed as flat surfaces, the hair is sandwiched between the hair clamping surfaces 21 and 31 along the flow of the hair. By moving the hair iron 1, straightening or straightening can be performed.

  Here, the cross-sectional circumferential length of the portion excluding the respective hair pinching surfaces 21 and 31 which are flat surfaces in the both hair pinching portions 2 and 3 is the cross-sectional circumferential length L2 of the hair pinching portion 2 and the cross-sectional circumference of the hair pinching portion 3. The ratio with the length L3 is 1.53: 1 or more, preferably 1.58: 1 or more.

  This is because, when the diameter of the curl of the hair obtained is measured by gradually changing the ratio of the cross-sectional peripheral length L2 of the hair pinching part 2 and the cross-sectional peripheral length L3 of the hair pinching part 3, the cross-sectional peripheral length of the hair pinching part 2 When L2 is between 1.53 times and 1.58 times the cross-sectional peripheral length L3 of the hair clip 3, the diameter of the curl obtained increases rapidly, and if it is 1.58 times or more, the increase in the cross-sectional peripheral length This is because an experimental result (see FIG. 9) was obtained that the ratio of increase in curl diameter was larger than when the ratio was less than 1.53 times.

  Of course, the value of the curl diameter obtained by the absolute values of the cross-sectional peripheral lengths L2 and L3 varies, but within the range intended for curling, it is related to the absolute values of the cross-sectional peripheral lengths L2 and L3. The results shown in FIG. 9 were almost obtained.

  Incidentally, in the illustrated example, the width of the hair pinching surfaces 21 and 31 is 18 mm, the cross-sectional circumferential length L2 of the hair pinching portion 2 is 74.4 mm, and the cross-sectional circumferential length L3 of the hair pinching portion 3 is 47 mm (cross-sectional circumferential lengths L2 and L3 The ratio is 1.58: 1).

  The reason why the cross-sectional shape of the hair pinching portion 2 is a flat oval is that the cross-sectional circumferential length L2 can be increased without increasing the size (thickness) of the hair pinching portion 2.

  Further, the hair pinching surfaces 21 and 31 in the respective hair pinching portions 2 and 3 protrude one step from the portions other than the hair pinching surfaces 21 and 31 of the hair pinching portions 2 and 3, and the step d2, between them, respectively. Although d3 is provided, the level difference d2 in the hair pinching part 2 having a long cross-sectional peripheral length L2 is made smaller than the level difference d3 in the hair pinching part 3 having a short cross-sectional peripheral length L3. This is because it is advantageous to obtain a large curl because the tangential angle between the hair pinching surface 21 and the other parts excluding the hair pinching surface 21 can be increased. Incidentally, in the illustrated example, d2 = 0.7 mm and d3 = 1.7 mm.

DESCRIPTION OF SYMBOLS 1 Hair iron 2 Hair pinching part 3 Hair pinching part 6 Comb teeth 20 Heating part 30 Heating part 21 Hair pinching face 31 Hair pinching face

Claims (2)

A pair of hair pinching portions are provided, and both hair pinching portions are formed with convex curved surfaces each having a cross-sectional shape excluding the opposite hair pinching surfaces, and the above-mentioned hair pinching surface of one hair pinching portion Is longer than the cross-sectional circumference excluding the hair pinching surface of the other hair pinching portion, the ratio of the cross-sectional peripheral lengths of both hair pinching portions is 1.53: 1 or more, and the cross-sectional peripheral length is A curling-compatible hair iron, characterized in that the cross-sectional shape of the longer hair pinching portion is a flat ellipse with a thin thickness in the hair pinching direction . The hair pinching surface in each hair pinching part is formed as a flat surface, and a step is provided between the hair pinching surface and the other part forming the convex curved surface. The curling-compatible hair iron according to claim 1, wherein the step is smaller in the hair pinching portion having a longer cross-sectional circumference.

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