KR102577692B1 - Curling iron - Google Patents

Abstract

The present invention relates to a curling iron, and more specifically, to a curling iron whose heating plate can be easily replaced. The present invention comprises: an upper body; a lower body disposed lower than the upper body and rotatably coupled to the upper body; an upper head portion provided with an upper heating plate and detachably coupled to the upper body; and a lower head portion provided with a lower heating plate and detachably coupled to the lower body.

Description

Curling iron {CURLING IRON}

The present invention relates to a curling iron, and more specifically, to a curling iron that can easily replace a curling iron head with a different function.

The curling iron is used to create hairstyles such as waves. Using heat (approximately 120-140℃), you can create styles such as temporary curves or angular texture patterns. There are electric bases, which are beauty equipment products that are used directly by connecting an electric cord, and products that are heated on a stove.

Using a curling iron, you can create hairstyles using techniques such as volume, wave, and curl, and you can also create temporary settings that last for a long time as long as moisture is not added. Curling irons can cause serious damage to chemically treated hair, so it is best to use them after thoroughly treating each hair strand.

As a prior art regarding such a hair straightener, there is Patent Registration No. 10-1708021 (February 13, 2017) (hereinafter referred to as Prior Art 1), etc. The prior art includes a catching unit and a lock unit, so that the hair can be used by hand. It presents a technology that can prevent users who style their hair while touching a hair straightener from getting their hands burned, and also prevents a lot of force and effort from being put into creating a hairstyle.

However, prior art 1 was only faithful to the basic function of creating a wave by forming curls in the hair or creating a straight hair style by straightening the curled hair, and it was impossible to create a more stylish hair.

Registered Patent No. 10-2316244 (hereinafter referred to as Prior Art 2) is a supplement to the above-described Prior Art 1, comprising an upper cover exposed at the top, an upper handle connected to one side of the upper cover, and a lower surface of the upper cover. An upper body including an upper hot plate and a rotational coupling portion provided on the upper handle, a lower cover exposed to the lower part, a lower handle connected to one side of the lower cover, a lower hot plate provided on the upper surface of the lower cover, and the lower A lower body including a corresponding coupling portion provided on the handle and coupled to the rotation coupling portion, and a stamp portion provided on the upper heating plate, the lower heating plate, or both and having a predetermined shape, thereby engraving a specific shape into the hair. The hair stamp function was implemented to allow for more stylish hair.

However, the above-described prior art 2 has a structure in which the heating plate is inserted into a mounting groove and is detachably coupled. In this case, the heating plate is hot and there is a risk of burns, and in order to safely replace the heating plate, it is inconvenient to wait until the heating plate cools down. There was a feeling.

The present invention was devised to solve the above problems, and its purpose is to provide a hair straightener whose heating plate can be easily replaced.

Another object of the present invention is to provide a hair straightener that can replace the hot plate more quickly without waiting for the hot plate to cool down.

The present invention, aimed at solving the above problems, has the following configuration and characteristics.

Upper body; a lower body disposed lower than the upper body and rotatably coupled to the upper body; An upper head portion provided with an upper heating plate and detachably coupled to the upper body; and a lower head portion provided with a lower heating plate and detachably coupled to the lower body.

It may further include a detachable coupling means including an upper fitting groove recessed from the front to the rear of the upper body, and an upper fitting protrusion protruding backward to be inserted into the upper fitting groove from the rear of the upper head. .

In addition, the upper head portion may include an upper support portion that has an outer width corresponding to the outer width of the upper body and is provided with the upper fitting protrusion at the rear, and an upper connection portion that extends forward from the upper support portion and is connected to the upper heating plate. there is.

The present invention having the above configuration and features has the effect of easily replacing the heating plate.

Additionally, the present invention has the effect of allowing the hot plate to be replaced more quickly without waiting for the hot plate to cool down.

Figure 1 is a side view of a hair straightener according to the present invention.
Figure 2 is an actual photo of the curling iron.
Figure 3 is a plan view of a hair straightener according to a first embodiment of the present invention.
Figure 4 is a plan view of a hair straightener according to a second embodiment of the present invention.
Figure 5 is a diagram for explaining the detachment and coupling means.
Figure 6 is a diagram for explaining an additional embodiment of the present invention.

Since the present invention can be subject to various changes and can have various forms, implementation examples (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

The terms used in this specification are merely used to describe specific implementation examples (sun, aspect, aspect) (or examples), and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as ~include~ or ~consist of~ are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

~First~, ~Second~, etc. described in this specification are only used to distinguish different components, and are not limited by the order of manufacture, and the names are used in the detailed description and claims of the invention. may not match.

Throughout this specification, when a part is said to be “connected” to another part, this includes not only the case where it is “directly connected,” but also the case where it is “indirectly connected” with another element in between. do.

Figure 1 is a side view of a hair straightener according to the present invention. Figure 2 is an actual photo of the curling iron.

The curling iron (C) according to the present invention can easily replace the heating plate (upper heating plate (6) and lower heating plate (7), which will be described later), and will hereinafter be referred to as the “this device” for convenience of explanation.

Referring to Figure 1, this device (curling iron (C) according to the present invention) includes an upper body (1), a lower body (2), an upper head portion (3), and a lower head portion (4).

The upper body (1) is detachably coupled to the upper head portion (3) to which the upper heating plate (6) is connected, and is placed behind the upper head portion (3) and can serve as a handle. .

Here, the rear refers to the right direction with respect to FIG. 1, and the front refers to the left direction with respect to FIG. 1, and the same will be applied in the following description.

As described above, the upper head portion 3 is said to be connected to the upper heating plate 6. For example, the upper head portion 3 may include a first mounting groove that is recessed from the lower side to the upper side. The upper heating plate 6 may be inserted and mounted in the first mounting groove.

Here, the upper side (upper part, upper surface, etc.) means the upper side (upper part, upper surface, etc.) with respect to Figure 1, and the lower side (lower part, lower surface, etc.) means the lower side (lower part, lower surface, etc.) with respect to Figure 1. The same will be applied in the description below.

The upper heating plate 6 may be an electrical resistor, and the upper body 1 and the upper head portion 3 are connected to a wire that supplies power to the upper heating plate 6 and whether or not the power is supplied and the amount of power to be supplied. A control device to control may be built in.

Likewise, the lower body 2 and the lower head portion 4, which will be described later, may also be equipped with wires and control devices that supply power to the lower heating plate 7, which will be described later. This is a known technology, so detailed description will be omitted. Do this.

The lower body (2) is disposed lower than the upper body (1) and is rotatably coupled to the upper body (1).

Exemplarily, the device may include a hinge portion that rotatably couples the upper body 1 and the lower body 2.

The lower head portion 4 is disposed ahead of the lower body 2, is detachably coupled to the lower head portion 4, and is provided with a lower heating plate 7.

For example, the lower head portion 4 may include a second mounting groove that is recessed from the top (upper surface) to the lower side, and the lower heating plate 7 may be installed by interpolating into the second mounting groove.

The above-described device includes an upper stamp portion 8 consisting of a protrusion (protruding downward) or a groove (depressed upward) protruding from the upper heating plate 6, and the lower heating plate 7 It may include a lower stamp portion 9 including a recessed groove (recessed downward) or a protruding protrusion (protruding upward) (see FIG. 2).

The grooves or protrusions may have a specific shape (eg, a star shape), and since the technical idea described above is described in Prior Art 2 (Patent No. 10-2316244), a more detailed description will be omitted.

Figure 3 is a plan view of a hair straightener according to a first embodiment of the present invention. Figure 4 is a plan view of a hair straightener according to a second embodiment of the present invention. Figure 5 is a diagram for explaining the detachment and coupling means.

As described above, each of the upper head portion (3) and lower head portion (4) is said to be detachably coupled to each of the upper body (1) and lower body (2). Hereinafter, with reference to FIGS. 3 to 5, a structure in which each of the upper head portion 3 and the lower head portion 4 and the upper body 1 and the lower body 2 are detachably coupled will be described.

This device is inserted into the upper fitting groove (not shown) recessed from the front (front) to the rear of the upper body (1), and the upper fitting groove (not shown) from the rear (rear) of the upper head part (3). It may include detachable coupling means (5) including an upper fitting protrusion (51) protruding rearward.

In addition, this device has a lower fitting groove (not shown) recessed from the front (front) to the rear of the lower body (2), and is inserted into and fitted into the lower fitting groove from the rear (rear) of the lower head part (4). It may include a lower fitting protrusion (not shown) that protrudes rearward.

In this way, since this device includes the attachment and detachment means (5), the upper head portion (3) moves rearward with respect to the upper body (1) and the upper fitting protrusion (51) is inserted into the upper fitting groove. The upper head part (3) and the upper body (1) can be detachably coupled to each other, and similarly, the lower head part (4) also moves rearward with respect to the lower body (2) so that the lower fitting protrusion forms a lower fitting groove. It is inserted and fitted so that the lower head portion (4) and the lower body (2) can be detachably coupled.

Conversely, when each of the upper head portion (3) and lower head portion (4) moves forward with respect to the upper body (1) and lower body (2), the upper fitting protrusion (51) falls out of the upper fitting groove, As the lower fitting protrusion falls out of the lower fitting groove, each of the upper head part (3) and the lower head part (4) can be separated from the upper body (1) and the lower body (2).

As described above, the upper stamp portion 8 and the lower stamp portion 9 are said to be connected to each of the upper head portion 3 and the lower head portion 4. However, in prior art 2, stamp portions having different shapes are replaced. To do this, there was a risk of burns because the hot plates had to be removed from the mounting grooves, and there was the inconvenience of having to wait for the hot plates and stamp parts to cool down.

However, this device has a structure in which the upper head portion (3) to which the upper heating plate (6) is connected is detachably coupled to the upper body (1), and the lower head portion (4) to which the lower heating plate (7) is connected is connected to the lower body (2). Since it is a structure that is detachably coupled to and separate from each other, the heating plates can be separated from the upper body (1) or lower body (2) without directly touching the heating plates, so there is no risk of burns, and when the heating plates and stamp parts cool down, there is no risk of burns. The advantage is that it can be replaced quickly without having to wait.

In addition, this device includes a detachable coupling means (5) to detachably couple the first upper head with a larger width among the upper head parts (3) to the upper body (1) as shown in FIG. 3, or to detachably couple the upper head (3) to the upper body (1) as shown in FIG. Among the head portions (3), the first upper head, which has a smaller width than the first upper head, can be detachably coupled to the upper body (1), so that upper heads of various sizes and shapes can be attached to the upper body (1) as needed. ) can be selectively and detachably attached to the hair, which has the advantage of allowing more diverse hair styling.

That is, if you want to make the curls smaller, a second upper head with a smaller width is combined with the upper body 1 as shown in Figure 4, and if you want to make the curls larger and achieve more natural styling, a first upper head with a larger width is used. The upper head can be coupled to the upper body (1). Here, width refers to the length in the vertical direction based on Figures 3 and 4.

As in prior art 2, the upper stamp portion 8 is inserted into or extracted from the mounting groove of the upper head portion 3, so that the upper stamp portion 8 and the upper head portion 3 can be detachably coupled. there is.

Additionally, by inserting or pulling out the lower stamp part 9 into the mounting groove of the lower head part 4, the lower stamp part 9 and the lower head part 4 can be detachably coupled.

Referring to Figure 5, the upper head portion 3 has an outer width corresponding to the outer width of the upper body 1, an upper support portion 31 provided at the rear with the upper fitting protrusion 51, and the upper support portion ( It extends forward from 31) and may include an upper connection portion 32 to which the upper heating plate 6 is connected.

Through this, the front end of the upper body 1 can be supported by the rear end of the upper support portion 31 while the upper fitting protrusion 51 is inserted into the upper fitting groove.

The lower head portion 4 also has an outer width corresponding to the outer width of the lower body 2, a lower support portion provided with the lower fitting protrusion at the rear, and a lower support portion extending forward from the lower support portion and connected to the lower heating plate 7. Of course, it may include a lower connection part.

Meanwhile, the device may include a temperature detection unit that determines the temperature of the hot plates and an output unit that outputs temperature information generated by the temperature detection unit by determining the temperature of the hot plates.

The temperature detection unit may generate temperature information by illustratively determining the amount of power supplied to the hot plate, and the temperature detection unit and the output unit (example: a display device) are configured to exemplify the upper body 1, the lower body 2, and the upper body 1. It may be provided in at least one of the head portion (3) and the lower head portion (4).

In addition, the device may include a battery built into at least one of the upper body (1), lower body (2), upper head portion (3), and lower head portion (4) to supply power to the heating plates, , the upper body 1 and the lower body 2 may be connected to a cable that supplies power to the battery and a terminal that supplies the power to the battery.

In addition, this device is provided in at least one of the upper body (1), lower body (2), upper head portion (3), and lower head portion (4) and a temperature control unit (the control device), and the temperature control unit controls to supply a preset amount of power to the hot plates, so that the temperature of the hot plates can be controlled in a multi-stage manner.

Referring to FIG. 2, the device is connected to the upper body 1 and the lower body 2 and may include an elastic body that spreads the upper body 1 and the lower body 2 to form a predetermined angle. .

Additionally, the device may include a locking device connected to the upper body 1 and the lower body 2 to pressurize the elastic body to maintain the compressed state.

Meanwhile, the device may include a waterproofing material (GS) and a functional additive (G) applied to the outer surface of the upper head portion (3).

The waterproofing material (GS) is applied to the outer surface of the upper head portion 3 and may contain 5 parts by weight of urethane (compared to 0.1 part by weight of hexadecane, which will be described later). The waterproofing material (GS) includes urethane and adds waterproofing to the upper head portion (3).

The functional additive (G) includes an inner shell material (G1) containing 0.2 parts by weight of aluminum (or made of aluminum), a heat buffering material (G2) containing 0.1 parts by weight of hexadecane, and 0.3 parts by weight of polyester. A sound absorbing material (G3) (or consisting of polyester), an anionic polymer material (G4) containing 0.2 parts by weight of p-styrenesulfonic acid (SSNa), and a spring steel (or spring) containing 0.2 parts by weight. It includes an elastic body (G5) made of steel.

The ratio of each component of the functional additive (G) was based on 0.1 weight part of hexadecane.

The inner shell material (G1) has a spherical shape surrounding the heat buffering material (G2), and the sound-absorbing material (G3) surrounds the inner shell material (G1), but its outer surface has a convex-convex shape in which hemispherical ridges and valleys are repeated, and the anionic The polymer material (G4) is provided in the valley of the sound-absorbing material (G3), and the sound-absorbing material (G3) includes an insertion groove recessed inward from the crest so that the inner end of the elastic body (G5) is inserted, and the elastic body ( G5) has a coil shape and an inner end is inserted into the insertion groove and may be provided on the outside of the sound absorbing material (G3).

Here, the inside refers to the center side of the unit (GU) described later of the functional additive (G), and the outside refers to the radial direction from the center side.

Referring to FIG. 6, to describe the functional additive (G) in more detail, the inner shell material (G1) has a spherical shape and is made of aluminum, and has an accommodating space inside where an anionic polymer material (G4) to be described later is accommodated. is formed It can also be dispersed and mixed with the above-described waterproofing material (GS).

The above-described inner shell material (G1) preferably contains 0.2 parts by weight of aluminum. If the aluminum content exceeds 0.2 parts by weight, the weight of the functional additive (G) is excessively increased and dispersibility is reduced, and if it is less than 0.2 parts by weight, There is a risk that the heat buffer material (G2), which will be described later, is not sufficiently wrapped, causing the heat buffer material (G2) to be lost.

The sound absorbing material (G3) is provided outside the inner covering material (G1) and surrounds the inner covering material (G1), and is mixed with the waterproofing material (GS) and distributed in the waterproofing material (GS).

The sound absorbing material (G3) contains polyester and absorbs sound waves. As described above, the sound-absorbing material (G3) has an outer surface (surface) of a concavo-convex shape with repeated hemispherical ridges and valleys, and the sound-absorbing performance is further improved because the contact area with sound waves is large.

The sound absorbing material (G3) contains 0.3 parts by weight of polyester. If the amount of polyester is less than 0.3 parts by weight, the sound absorption performance decreases, and if the polyester exceeds 0.3 parts by weight, the weight of the functional additive (G) is excessively increased and the content of the functional additive (G) is reduced. It can reduce acidity.

As described above, since the inner shell material (G1) is provided inside the sound-absorbing material (G3), sound waves passing through the sound-absorbing material (G3) are reflected by the inner shell material (G1) and are absorbed by the sound-absorbing material (G3). It can be absorbed inside.

The thermal buffer material (G2) is filled in the receiving space formed inside the inner shell material (G1), and may include hexadecane as described above.

Hexedecane (C16H34) is a phase change material (PCM) with a melting point of approximately 18.2°C.

A phase change material is an energy storage material that can actively store and release heat without external factors in the form of latent heat without a change in temperature when the phase changes depending on the surrounding temperature.

In general, latent heat, which is heat that enters and exits without a temperature change when a phase change occurs, has a significantly higher amount of heat than sensible heat, which is heat that enters and exits with a temperature change without accompanying a phase change. This feature can be used to store high amounts of thermal energy or maintain temperature.

In order to change the melting point, the heat buffer (G2) includes undecane, dodecane, tridecane, tetradecane, pentadecane, and hexadecane in order to change the melting point. It may further include one or more of Hexadecane, Heptadecane, Octadecane, Nonadecane, Eicosane, and Triacontane. The melting point of the heat buffer (G2) can be adjusted within the range of 15 to 25°C, which is room temperature.

The thermal buffer material (G2) described above may play a role in maintaining the temperature of the inner shell material (G1). Therefore, it is possible to prevent cracks from occurring as the thermal buffer material (G2) expands at high temperatures or contracts at low temperatures.

Therefore, the sound absorption performance of the functional additive (G) can be maintained despite temperature changes by suppressing the loss of the heat buffer (G2) due to cracking of the inner shell material (G1) and suppressing the decrease in sound wave reflection ability.

In addition, the lining material (G1) and the above-described sound-absorbing material (G3) perform annual exchange with the above-described heat buffering material (G2), and as a result, the heat buffering material (G2) and the waterproofing material (GS) achieve heat exchange, so that the temperature of the waterproofing material (GS) It can play a role in suppressing cracks, damage, and deformation due to contraction and expansion due to changes.

The heat buffer (G2) may contain 0.1 part by weight of hexadecane as described above. When less than 0.1 part by weight of hexadecane is used, the inner shell material (G1) is heated to a specific temperature (eg, 15 to 25° C. or about There is a problem in that deviation from the temperature (18.2°C) cannot be effectively suppressed, and if hexadecane exceeds 0.1 part by weight, it cannot be accommodated in the accommodation space of the inner shell material (G1) described above.

The anionic polymer material (G4) may include p-styrenesulfonic acid as described above, and may further include a hydrogel pre-polymer.

The anionic polymer material (G4) may be a mixture of p-styrenesulfonic acid and hydrogel pre-polymer (1:19 ratio) and UV cured.

The anionic polymer material (G4) described above is provided outside the sound absorbing material (G3).

It is preferable that 0.2 parts by weight of the anionic polymer material (G4) be included. However, if less than 0.2 parts by weight is used, the negative charge is not sufficient, and if it exceeds 0.2 parts by weight, the weight of the functional additive (G) is excessively increased, reducing dispersibility. There is a problem with it deteriorating.

The waterproofing material (GS) may contain a large number of units (GU) of the functional additive (G). During the application process, the multiple units (GU) are mutually repelled by electrostatic repulsion, resulting in the composition (functional additive (G) and waterproofing material). It is possible to improve the dispersibility of multiple units (GU) in a mixture of (GS).

As described above, the anionic polymer material (G4) may be provided in the grooves of the sound absorbing material (G3), thereby suppressing collisions between neighboring units (GU) or with other materials of the present composition to form an anionic polymer. Damage to the material (G4) can be prevented.

The elastic body (G5) is provided on the outside (outside, surface) of the sound-absorbing material (G3) and includes spring steel.

As described above, the sound absorbing material (G3) includes an insertion groove recessed from the outer surface of the floor to the inside, and the inner end of the elastic body (G3) is inserted into the insertion groove to stabilize the structure.

As described above, the elastic body (G3) has a coil shape and is provided at the outer end of the ridge of the sound absorbing material (G3) to add elasticity to the unit (GU).

Therefore, in the process of stirring the waterproofing material (GS) and the functional additive (G) containing a large number of units (GU), damage to the unit (GU) due to collision between neighboring units (GU) is suppressed, and the coil-shaped elastic material As (G5) is compressed and elastically restored, neighboring units (GU) move away from each other, thereby improving the dispersibility of the functional additive (G) in the waterproofing material (GS).

The present invention described above with reference to the attached drawings can be modified and modified by those skilled in the art, and such modifications and changes should be construed as falling within the scope of the present invention.

Curling iron: C
Upper body: 1 Lower body: 2
Upper head: 3 Upper support: 31
Upper connection: 32 Lower head: 4
Removable coupling means: 5 Upper fitting protrusion: 51
Upper heating plate: 6 Lower heating plate: 7
Upper stamp part: 8 Lower stamp part: 9

Claims (4)

Upper body;
a lower body disposed lower than the upper body and rotatably coupled to the upper body;
An upper head portion provided with an upper heating plate and detachably coupled to the upper body; and
a lower head portion provided with a lower heating plate and detachably coupled to the lower body;
Including,
Attachment/detachment coupling means including an upper fitting groove recessed from the front to the rear of the upper body, and an upper fitting protrusion protruding backward to be inserted into the upper fitting groove at the rear of the upper head portion;
It further includes,
The upper head part,
An upper support portion having an outer width corresponding to the outer width of the upper body and having the upper fitting protrusion at the rear, and an upper connection portion extending forward from the upper support portion and connected to the upper heating plate,
The upper head portion is formed from the bottom to the upper side and includes a first mounting groove into which the upper heating plate is inserted,
The lower head portion is formed from the top to the bottom and includes a second mounting groove into which the lower heating plate is inserted,
It includes an upper stamp portion consisting of a protrusion or a recessed groove protruding from the upper heating plate, and a lower stamp portion including a groove or a protruding protrusion recessed from the lower heating plate,
It is provided in at least one of the upper body, the lower body, the upper head, and the lower head, and further includes a temperature detection unit that determines the temperature of the upper hot plate and generates temperature information, and an output unit that outputs the temperature information. Contains,
A battery is built into at least one of the upper body, the lower body, the upper head, and the lower head and supplies power to the upper heating plate, and the battery supplies power to the upper body or the lower body. A terminal is connected to the cable that supplies the power to the battery,
Further comprising a hinge portion rotatably coupling the upper body and the lower body,
Further comprising an elastic body connected to the upper body and the lower body to spread the upper body and the lower body to form a predetermined angle,
The curling iron further includes a locking device connected to the upper body and the lower body to pressurize the elastic body to maintain the compressed state. delete delete In claim 1,
Includes a waterproofing material (GS) and a functional additive (G) applied to the outer surface of the upper head,
The waterproofing material (GS) is applied to the outer surface of the upper head portion,
The functional additive (G) is,
A heat buffer (G2) containing 0.1 part by weight of hexadecane;
An inner shell material (G1) containing 0.2 parts by weight of aluminum relative to 0.1 parts by weight of hexadecane, and surrounding the heat buffer (G2) and having a spherical shape;
It contains 0.3 parts by weight of polyester relative to 0.1 parts by weight of the hexadecane, and surrounds the inner skin material (G1), but the outer surface has an uneven shape with repeated hemispherical ridges and valleys, and is mixed with the waterproofing material (GS). sound-absorbing material (G3);
An anionic polymer material (G4) containing 0.2 parts by weight of p-styrenesulfonic acid (SSNa) relative to 0.1 parts by weight of hexadecane, and provided in the grooves of the sound absorbing material (G3); and
A coil-shaped elastic body (G5) provided on the floor and comprising 0.2 parts by weight of spring steel relative to 0.1 parts by weight of hexadecane;
Including,
The sound-absorbing material (G3) includes an insertion groove recessed inward from the floor, and the elastic body (G5) has an inner end inserted into the insertion groove and coupled thereto,
The waterproofing material (GS) is a hair straightener characterized in that it contains 5 parts by weight of urethane based on 0.1 parts by weight of hexadecane.

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