CN105639973B

CN105639973B - Hair curler

Info

Publication number: CN105639973B
Application number: CN201510850150.6A
Authority: CN
Inventors: 西田笃史; 森本雅晴
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2014-11-28
Filing date: 2015-11-27
Publication date: 2021-03-09
Anticipated expiration: 2035-11-27
Also published as: JP6512471B2; JP2016107043A; CN105639973A

Abstract

The invention provides a hair iron. A hair iron (10) comprises: a curling part (31) formed of a good thermal conductor around which hair is wound; a heating unit (50) for heating the hair curling unit (31); and a hair pressing portion (40) for clamping hair between the hair pressing portion and the outer surface of the curling portion (31). Thus, it is possible to provide a hair iron which can be used more comfortably and can further improve the convenience of use.

Description

Hair curler

Technical Field

The present invention relates to a hair iron for ironing hair into a curled shape or the like.

Background

Conventionally, as a hair iron, there is known a hair iron including a barrel made of a good thermal conductor around which hair is wound, a heater for heating the barrel, and a clip for holding the hair between the barrel and an outer surface of the barrel (see, for example, japanese patent application laid-open No. 10-113214).

The hair iron disclosed in patent document 1 curls hair by winding the hair around the outer surface of a drum.

In the hair iron disclosed in patent document 1, a rib-shaped shield portion formed of a poor thermal conductor is provided along the circumferential direction in a portion of the barrel other than the facing surface region facing the clip. The plurality of protective parts are fixed at intervals along the axial direction of the drum, so that a predetermined interval can be formed between the surface of the drum and the skin when the hair iron is used.

With the above-described conventional structure, it is possible to iron a hairstyle such as straight hair or curly hair while the hair is fixed by the clip. However, if possible, it is preferable to carry the function of the hair iron in which the barrel is formed with bristles (Japanese: ブリスル), thereby further expanding the flexibility of hairstyling.

In the above-described conventional structure, the drum is formed of a good thermal conductor, and the height of the shield portion is set relatively low. Therefore, when the hair iron is used, the skin of the user may touch the heated roll and the user may feel hot. When the drum is rotated to wind hair around the drum or wind hair off the drum, care must be taken to prevent the drum from contacting the skin.

As described above, the above-described conventional techniques have problems in that: the hair cannot be permed smoothly, and the use convenience is poor.

Disclosure of Invention

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a hair iron which can be used more comfortably and can further improve the convenience of use.

The hair iron of the present invention comprises: a curling part formed of a good thermal conductor for winding hair; a heating part for heating the hair curling part; and a hair pressing portion for clamping hair between the hair pressing portion and an outer surface of the curling portion.

With such a structure, two methods can be used, namely: a method of using the hair curler while holding hair by the hair pressing portion, and a method of using the hair curler while rotating the hair curler without using the hair pressing portion (without holding hair by the hair pressing portion) to curl hair.

As a result, the hair curls can be made different in diameter when the hair is curled. In this way, two kinds of hair curl diameters can be realized, and thus, for example, hair can be permed to have different hair curl diameters by changing the method of use depending on the hair part.

The present invention can provide a hair iron which can be used more comfortably and can further improve the convenience of use.

Drawings

Fig. 1 is a perspective view of a hair iron according to embodiment 1 of the present invention.

Fig. 2 is a plan view of the hair iron according to embodiment 1 of the present invention.

Fig. 3 is a side view of the hair iron according to embodiment 1 of the present invention.

Fig. 4 is a side view showing a hair press part of the hair iron according to embodiment 1 of the present invention in an opened state.

Fig. 5 is a sectional view taken along line 5-5 in fig. 2.

Fig. 6 is an enlarged sectional view showing a part of a hair iron according to embodiment 1 of the present invention.

Fig. 7 is a sectional view taken along line 7-7 in fig. 2.

Fig. 8 is an exploded perspective view of a hair iron according to embodiment 1 of the present invention.

Fig. 9 is a perspective view schematically showing the structure of the heat conduction suppressing part of the hair iron according to embodiment 1 of the present invention and a method of attaching a comb tooth row to a hair curling part.

Fig. 10 is a perspective view schematically showing a method of attaching a row of hair pressing part side teeth to a hair pressing part in a hair iron according to embodiment 1 of the present invention.

Fig. 11 is a side view of a hair iron according to embodiment 2 of the present invention.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. These embodiments do not limit the present invention.

In the following description, the vertical direction is specified with reference to the hair iron in which the hair pressing portion is disposed upward. The hair iron side of the hair iron is referred to as the front side, and the grip side is referred to as the rear side.

The reference front-back direction (longitudinal direction of the permanent wave part and the holding part: central axis direction of the hair curling part) is defined as X-direction, the width direction (width direction of the permanent wave part and the holding part) is defined as Y-direction, and the up-down direction (thickness direction of the hair pressing body in a state where the hair pressing part is closed under the reference) is defined as Z-direction.

The following embodiments include the same components. Therefore, in the following, common reference numerals are given to these same components, and redundant description is omitted.

(embodiment 1)

First, embodiment 1 of the present invention is explained.

Fig. 1 to 10 are views for explaining the structure of a hair iron 10 according to embodiment 1 of the present invention.

As shown in fig. 1, the hair iron 10 of the present embodiment includes a grip 20 to be gripped by a user, and a hair iron 30 is coupled to one end side (front end side) in the X direction of the grip 20.

The outer peripheral surface 30a (see fig. 2 to 4) of the permanent wave part 30 has a substantially cylindrical outer peripheral surface shape. The shape of the outer peripheral surface 30a of the permanent wave part 30 is not limited to a cylinder, and may be any shape as long as the hair can be wound around.

A hair pressing portion 40 that grips the hair by being engaged with the outer peripheral surface 30a of the hair-waving portion 30 is coupled to the grip portion 20. The hair pressing portion 40 is attached to be rotatable relative to the grip portion 20. By rotating the hair pressing portion 40 with respect to the grip portion 20, the inner surface 40a (see fig. 4) of the hair pressing portion 40 can be moved closer to and away from the outer peripheral surface 30a of the permanent wave portion 30.

With such a configuration, the user can hold hair between the hair iron 30 and the hair pressing portion 40.

The hair pressing portion 40 has an operating portion 43 on the rear side thereof, and the operating portion 43 is used to separate the inner side surface 40a of the hair pressing portion 40 from the outer peripheral surface 30a of the permanent wave portion 30. The user can hold the hair by pressing the operating portion 43 to separate the hair pressing portion 40 from the hair-waving portion 30, putting the hair between the inner side surface 40a of the hair pressing portion 40 and the outer peripheral surface 30a of the hair-waving portion 30 separated from each other, and then restoring the operating portion 43 to its original state.

The user can wrap the hair around the outer peripheral surface 30a of the permanent wave part 30 while holding the hair between the permanent wave part 30 and the hair pressing part 40.

Thus, the hair iron 10 of the present embodiment can iron the hair of the user into a curled shape. Wherein, the user and the person who carries out the perming operation can be the same person, also can be another person who carries out the perming operation, and the person scalds the hair of the user into a curly shape.

The configurations of the permanent wave part 30 and the hair pressing part 40 are not limited to those shown in the drawings, and any configuration may be used as long as the configuration can sandwich hair by fitting the outer peripheral surface 30a of the permanent wave part 30 to the inner surface 40a of the hair pressing part 40.

In addition, in a state where the hair pressing portion 40 is closed (a state where the inner side surface 40a of the hair pressing portion 40 is in contact with the outer peripheral surface 30a of the permanent wave portion 30), a plurality of comb teeth 61 are provided in a front-rear row in the X direction on the outer peripheral surface 30a of the permanent wave portion 30 except for a portion facing the inner side surface 40a of the hair pressing portion 40 (see fig. 2). That is, the hair-curling-portion-side comb-tooth rows 60 are provided in a front-rear row in the X direction at the portion of the outer peripheral surface 30a of the hair curling portion 30 exposed in the state where the hair pressing portion 40 is closed. The plurality of hair-curling-portion-side comb-tooth rows 60 are arranged at intervals in the circumferential direction.

Accordingly, the hair iron 10 of the present embodiment is configured to: in the permanent wave, the hair can be wound around the outer peripheral surface 30a of the permanent wave part 30 while being straightened, and the hair can be ironed into a curled shape more beautifully.

The hair iron 10 of the present embodiment is configured to: hair can be wound around the portion of the outer peripheral surface 30a of the permanent wave part 30 exposed in the state where the hair pressing part 40 is closed and the outer surface 40b of the hair pressing part 40 without sandwiching hair between the permanent wave part 30 and the hair pressing part 40.

When the user's hair is curled by such a method, curls having a different diameter from the curls that are curled when hair is held between the permanent wave part 30 and the hair pressing part 40 can be curled.

In the present embodiment, a hair pressing portion side comb tooth row 70 (see fig. 1 to 4) aligned in the X direction (front-back direction) is also provided on the outer surface 40b of the hair pressing portion 40, and a plurality of comb teeth 71 are arranged in a row in the X direction.

As described above, the present embodiment is configured such that: even when hair is permed by winding the hair around the portion of the outer peripheral surface 30a of the permed part 30 exposed in the state where the hair pressing part 40 is closed and the outer surface 40b of the hair pressing part 40 without interposing the hair between the permed part 30 and the hair pressing part 40, the hair can be curled while being finished.

The grip portion 20 includes a housing 21 constituting an outer wall, and the housing 21 is formed by screwing a plurality of divided bodies (for example, an upper housing 22 and a lower housing 23) together with screws 93a (see fig. 8). The method of coupling the upper case 22 and the lower case 23 is not limited to the use of screws, and may be performed by press fitting, caulking, or the like. The upper case 22 and the lower case 23 may be joined by welding, bonding, or the like.

The case 21 is formed of a poor thermal conductor (e.g., PC (polycarbonate), etc.), and can suppress heat from the heater 50 from being transmitted to the grip portion 20.

A cavity is formed in the housing 21, and various electronic components such as the control device 90 (see fig. 8) are housed in the cavity. A recess 22a (see fig. 8) is formed in the upper surface of the upper case 22 of the grip 20, and a decorative plate 24 is fitted into the recess 22 a.

As shown in fig. 8, an LED storage space 22b is formed in the recessed portion 22a so as to be open to the decorative plate 24, and the LED storage space 22b stores an LED90b attached to the control device 90. The LED housing space 22b is defined by a rib 22c extending downward (see fig. 5).

As shown in fig. 1 to 4, an operation switch (switch) 27 is provided on a side portion of the grip portion 20 so as to be slidable in the front-rear direction. The power supply can be switched between on and off by operating the operation switch 27. By switching the power supply on and off in this way, the on and off states of the power supply to the heater 50 (see fig. 7) serving as a heating portion described later can be switched, and the on and off states of the LED90b can also be switched. When the LED90b is lit, the decorative panel 24 is lit by light from the LED90 b.

As shown in fig. 8, the operation switch 27 includes a slide plate 27a and an operation portion 27 b. The slide plate 27a is formed with a through hole 27c through which a switching projection 90d attached to the switch main body 90a of the control device 90 passes.

When the user operates the operation switch 27 to slide forward in the front-rear direction, the protrusion 90d also moves forward as the slide plate 27a moves. When the protrusion 90d is moved forward, the power of the hair iron 10 is turned on, and the heater 50 is energized. Then, the heater 50 generates heat, and the self-heating heater 50 transfers the heat to the permanent wave part 30, so that the permanent wave part 30 is heated.

As described above, the hair iron 10 of the present embodiment performs permanent waving by deforming hair with heat. That is, the hair of the user can be curled by winding the hair around the outer peripheral surface 30a of the heated permanent wave part 30.

The grip portion 20 has an outer peripheral surface having an arc-shaped cross-sectional shape, and is formed in a shape similar to a cylinder as a whole. However, the outer shape of the grip portion 20 is not limited to a shape similar to a cylindrical shape, and may be any shape as long as it can be gripped by a user.

As shown in fig. 1 to 4, a rotary connector 92 connected to a power supply line 91 is attached to the rear end portion 20a of the grip portion 20. Specifically, a circumferential projection 22e is provided at the rear end of the upper case 22 so as to project toward the inner circumferential side, and a circumferential projection 23b is provided at the rear end of the lower case 23 so as to project toward the inner circumferential side (see fig. 5). The rotary connector 92 is attached to the rear end portion 20a of the grip portion 20 by fitting both the circumferential projection 22e and the circumferential projection 23b into a circumferential groove 92b formed in the rotary connector 92.

At this time, the rotary connector 92 is attached to the rear end portion 20a of the grip portion 20 in a state where the terminal portion 92a is inserted into the insertion opening 90c, and the insertion opening 90c is electrically connected to the lead 94a attached to the control device 90. Thus, the power supply line 91 is electrically connected to the control device 90 via the lead wire 94 a.

The hair waving portion 30 includes: a hair curling portion 31 having a cylindrical shape and an outer surface 31a (see fig. 9) around which hair is wound; a lid 34 having a knob 34d formed at the tip thereof; and a coupling portion 35 for coupling the curling portion 31 to the grip portion 20 (see fig. 8).

In the present embodiment, the curling portion 31 has a substantially cylindrical shape, and the heater 50 (see fig. 7) is housed inside the curling portion 31. The curling portion 31 is made of metal, which is a good heat conductor, so that heat from the heater 50 is easily transmitted.

The cover 34 is made of a poor thermal conductor (e.g., PBT (polybutylene terephthalate)) and is connected to the tip of the curl portion 31.

A concave-shaped knob portion 34d (see fig. 1) is formed at the tip end of the lid portion 34 so as to be curved inward over the entire circumference. In the present embodiment, the tab portion 34d is formed with a projection 34 a. When the knob portion 34d is pinched, the projection 34a functions as a non-slip portion. The projection 34a also has a function of dissipating heat transmitted from the heater 50 to the knob 34 d. Further, a recess 34c (see fig. 5) recessed rearward is formed at the front end of the cover 34, and by forming such a recess 34c, the surface area can be increased, and heat dissipation can be further promoted.

An inner cylinder 34b (see fig. 5) projecting rearward is formed on the inner peripheral side of the lid 34. The rear end of the inner cylinder 34b is inserted into the cylindrical curler 31 from the front opening 31d of the cylindrical curler 31, so that the front opening 31d of the curler 31 is closed by the cover 34. Thereafter, in a state where the front opening 31d is closed by the cover 34, the cover 34 is connected to the front end of the curl 31 by screwing the curl 31 and the inner cylinder 34b with screws 93b (see fig. 8). The coupling between the cover 34 and the curl portion 31 is not limited to the use of screws, and may be performed by a method selected from press fitting, caulking, welding, bonding, and the like.

On the other hand, a coupling portion 35 (see fig. 5 and 8) made of PBT or the like is connected to the rear end of the curl portion 31, and the rear-side opening 31e of the curl portion 31 is closed by the coupling portion 35.

Specifically, the coupling portion 35 includes a cylindrical portion 35a and a flange portion 35b protruding from the rear end of the cylindrical portion 35a in the outer circumferential direction, and a through hole 35c through which the lead 94b passes is formed inside the coupling portion 35.

The front end of the tube portion 35a is inserted into the tube from the rear opening 31e of the tubular curl portion 31, and in this state, the curl portion 31 and the tube portion 35a are screwed by a screw 93c (see fig. 8). This allows the connection portion 35 to be continuously provided at the rear end of the curl portion 31. The coupling between the coupling portion 35 and the curl portion 31 can be performed by a method selected from press fitting, caulking, welding, bonding, and the like.

A circumferential groove 35d is formed in the outer periphery of the flange 35b (see fig. 5). A circumferential projection 22d is provided at the front end of the upper case 22 so as to project toward the inner circumferential side, and a circumferential projection 23a is provided at the front end of the lower case 23 so as to project toward the inner circumferential side. Then, by fitting both the circumferential protrusion 22d and the circumferential protrusion 23a into the circumferential groove 35d formed in the flange portion 35b, the coupling portion 35 can be attached to the distal end portion 20b (see fig. 4) of the grip portion 20.

Thus, the curling part 31 (a part of the curling part 30) to which the cover 34 and the coupling part 35 are attached is continuously provided to the distal end part 20b of the grip part 20.

In the present embodiment, a nichrome heater is used as the heater 50. In this way, the use of the nichrome wire heater can sufficiently secure the heat required for permanent waving the hair of the user.

As shown in fig. 8, the heater 50 is formed by sandwiching a metal plate 51 having a nichrome wire 51a wound around it between a pair of holding plates 52 and then attaching them to an attachment plate 53. A lead 94b connected to the controller 90 is connected to the metal plate 51, and the heater 50 and the controller 90 are electrically connected through the lead 94 b.

The heater is not limited to a nichrome wire heater, and a PTC (Positive Temperature Coefficient) heater or other heating means may be used.

Further, the thermistor 100 is preferably attached to the heater 50. In this way, the temperature of the heater 50 can be controlled by the resistance value of the thermistor 100, which changes with the temperature change of the heater 50. Preferably, a fuse 101 (see fig. 7) is provided. In this way, when the temperature of the curling portion 31 or the like exceeds a predetermined temperature due to breakage or the like of the control device 90, the energization of the heater 50 can be interrupted.

In the present embodiment, heat from the heater 50 can be transmitted to the curling portion 31 via the pair of radiators 54 as the heat transmission portions. The heater 50 may be directly fixed to the hair curling portion 31 without interposing the heat sink 54 therebetween.

The heat sink 54 is formed of a metal that is a good thermal conductor, and includes: a base 55 that is in contact with the heater 50 as a heating portion; and a free piece 56 extending from both upper and lower ends of the base 55, and a tip end of the free piece 56 abuts against an inner peripheral surface of the hair curling portion 31.

Further, protruding wall portions 55a protruding toward the heater 50 are formed on the pair of base portions 55, respectively. Specifically, a protruding wall portion 55a protruding toward the heater 50 is formed on the upper side of one base portion 55, and a protruding wall portion 55a protruding toward the heater 50 is formed on the lower side of the other base portion 55. The heater 50 is accommodated in a space defined by the pair of base portions 55 and the pair of protruding wall portions 55 a.

The base portion 55 is formed with a lead wire housing portion 55b for housing the lead wire 95, and the lead wire 95 is held by the clip 57 in a state of being housed in the lead wire housing portion 55 b. As shown in fig. 8, a lead 95 is connected to the controller 90, and the energization of the heater 50 is controlled by temperature detection.

Further, the hair iron 30 includes a hair pressing portion 40 for sandwiching hair between the hair pressing portion and the outer surface 31a of the hair curling portion 31.

In the present embodiment, the hair pressing portion 40 is formed of a material (e.g., PBT or the like) which is a poor conductor of heat and has heat resistance, and includes: a hair pressing body 41 that can be moved close to and away from the hair curling portion 31; and an operation portion 43 for rotating the hair pressing body 41 relative to the hair curling portion 31 so as to be able to approach and separate from the hair curling portion 31 (see fig. 10).

The hair pressing body 41 includes: an outer surface 41a capable of functioning as a curling surface; and an opposing surface 41b that opposes the outer surface 31a of the curl portion 31 and can function as a hair holding surface (see fig. 7).

On the other hand, the operation portion 43 is provided so as to extend upward and rearward, and includes a main body portion 44 and a spring 46 (see fig. 5), and the spring 46 is configured to apply a force to the operation portion 43 and the hair pressing body 41 so as to urge the operation portion 43 and the hair pressing body 41 toward the curl portion 31.

In the present embodiment, a coil spring is used as the spring 46, the coil spring is housed in the housing recess 25, and the housing recess 25 is formed in an upper portion of the center of the front end of the upper case 22 (see fig. 5).

The housing recess 25 is defined by a bottom wall 25a and a peripheral wall 25b, and a projection 25d projecting upward is formed on the bottom wall 25 a. The projection 25d is coupled to one end 46a of the spring 46. On the other hand, the other end 46b of the spring 46 is inserted and fixed into a concave slit 44a, and the slit 44a is formed inside (lower side in fig. 5) the body 44.

In this way, the operating portion 43 and the hair pressing body 41 are configured to be urged by the spring 46 in a direction (closing direction) in which the operating portion 43 and the hair pressing body 41 abut against the curly part 31.

Further, a rib 25c is formed below the bottom wall 25a, a screw hole is formed in the rib 25c, and the screw 93a is inserted into the screw hole of the rib 25c from the screw hole 23c formed at the front end of the lower case 23, whereby the front end portions of both the upper case 22 and the lower case 23 are coupled (see fig. 5).

A pair of slits 26 (see fig. 8) are formed on both sides in the width direction (Y direction) of the housing recess 25 of the upper case 22, and a pair of arm portions 45 formed in the main body portion 44 are inserted into both the slits 26.

The pair of arm portions 45 are respectively formed with shaft holes 45a (see fig. 10), and the hair pressing portion 40 can be attached to the grip portion 20 and the curling portion 31 so as to be rotatable about the pair of shaft holes 45a by pivotally supporting the shaft holes 45a on a shaft portion (not shown).

As described above, in the present embodiment, the configuration is such that: a hair-curling-portion-side comb tooth row 60 is formed on a portion of the outer surface 31a of the hair curling portion 31 which is exposed after being covered with the hair pressing body 41.

The hair-side comb tooth rows 60 are formed of a material (e.g., nylon resin) that is a poor conductor of heat and has heat resistance, and can suppress heat from the heater 50 from being transmitted to the comb teeth 61. Further, the comb teeth 61 are easily deformed when pressed by a finger or when brought into contact with the skin, but need to have a certain thickness, length, and strength in order to avoid contact of the finger or the skin with the outer surface 31a of the curling portion 31. Further, the comb teeth 61 are formed in a rounded shape at the tip end so that the finger or the skin is less likely to feel pain when contacting the comb teeth 61. From the above viewpoint, in the present embodiment, the comb teeth 61 are configured as follows: the thickness is 2.3mm and the length is 10.5 mm. However, the thickness and length of the comb teeth 61 and other parameters can be freely set.

As shown in fig. 9, the hair-curling-portion-side comb tooth array 60 includes a base portion 62, and a plurality of comb teeth 61 are provided in the base portion 62 in a row. A wide flange portion 62a is formed on the side of the base portion 62 opposite to the side on which the comb teeth 61 are formed, and the base portion 62 has a stepped shape (convex shape) in cross section (see fig. 7).

A plurality of hair-curling-portion-side comb-tooth rows 60 are arranged at intervals in the circumferential direction on the outer surface 31a of the hair curling portion 31. By doing so, a structure can be made: during the permanent wave, the skin and fingers are not easily brought into direct contact with the curling part 31. In the present embodiment, the plurality of hair-curling-portion-side comb-tooth rows 60 are arranged at equal intervals in the circumferential direction on the outer surface 31a of the hair curling portion 31.

Specifically, a plurality of grooves 32 are formed at intervals (equal intervals) in the circumferential direction on the outer surface 31a of the curl portion 31. The base portions 62 of the hair-curling-portion-side comb tooth rows 60 are inserted into the respective concave grooves 32 while sliding in the front-rear direction, and the plurality of hair-curling-portion-side comb tooth rows 60 are attached to the outer surfaces 31a of the curls 31 (see fig. 9).

The concave groove 32 has a wide inner circumferential groove portion 32a and an outer circumferential groove portion 32b (see fig. 7) having a smaller width than the inner circumferential groove portion 32a, and the concave groove 32 is formed with an opening 32c opening to the outer circumferential side.

That is, a plurality of protruding portions 31b protruding from both sides of the recessed groove 32 toward the recessed groove 32 side are formed on the outer peripheral side of the curl portion 31.

As described above, the sectional shape of the base portion 62 and the sectional shape of the concave groove 32 are formed into the stepped shapes corresponding to each other, so that the flange portion 62a and the protruding portion 31b can be brought into contact with each other and prevented from coming off when the base portion 62 is inserted into the concave groove 32.

In the present embodiment, the cross-sectional shape of the base portion 62 is formed to be slightly smaller than the cross-sectional shape of the concave groove 32, and the hair-side comb tooth rows 60 are attached to the concave grooves 32 of the hair part 31 with a predetermined gap d1 therebetween (see fig. 7).

Specifically, in a state where the base body portion 62 is inserted into the recess 32, a predetermined gap d1 is formed between the hair curling portion 31 and the base body portion 62 in each of the vertical direction Z, the width direction Y, and the front-rear direction X.

In the present embodiment, the curling portion 31 is formed of a metal that is a good conductor of heat so that heat from the heater 50 can be easily transmitted.

On the other hand, the hair-side comb tooth rows 60 need to suppress heat from the heater 50 from being transmitted to the comb teeth 61 and also need to suppress deformation due to heat, and therefore the hair-side comb tooth rows 60 are formed of a material (e.g., nylon resin or the like) that is a poor conductor of heat and has excellent heat resistance.

As described above, in the present embodiment, the curl portion 31 and the base portion 62 (curl portion-side comb tooth row 60) are formed of different materials, and therefore have different thermal expansion coefficients. Specifically, the hair-curl-portion-side comb-tooth rows 60 are formed of a material having a thermal expansion coefficient larger than that of the hair curl portion 31.

Therefore, in the present embodiment, the predetermined gap d1 is formed between the hair curler 31 and the base body 62, and expansion of the hair-curler-side comb teeth rows 60 during heating can be absorbed by the gap d 1. In this way, deformation and breakage of the hair part side comb tooth rows 60 and the hair part 31 due to expansion during heating can be suppressed. The size of the gap d1 can be set as appropriate depending on the material used.

In addition, the hair pressing portion 40 is provided with a hair pressing portion side comb tooth row 70 (see fig. 10). By doing so, a structure can be made: during the permanent wave, the skin or fingers are not easily brought into direct contact with the hair pressing part 40 (hair pressing body 41).

The hair pressing portion side comb tooth rows 70 are also formed of a material (e.g., nylon resin or the like) which is a poor conductor of heat and has heat resistance, and can suppress heat from the heater 50 from being transmitted to the comb teeth 71. Further, the comb teeth 71 are easily deformed when pressed by a finger or when brought into contact with the skin, but need to have a certain thickness, length, and strength in order to avoid contact of the finger or the skin with the hair pressing portion 40 (hair pressing body 41). The comb teeth 71 are formed to have rounded corners at the tips thereof, so that the fingers or the skin are not easily painful when they are in contact with the comb teeth 71. From the above viewpoint, in the present embodiment, the comb teeth 71 are configured such that: the thickness is 2.3mm and the length is 6.6 mm. However, the thickness, length, and other parameters of the comb teeth 71 can be freely set.

The hair pressing portion side comb tooth row 70 also includes a base portion 72, and a plurality of comb teeth 71 are provided in a row on the base portion 72. A wide flange portion 72a is formed on the side of the base portion 72 opposite to the side on which the comb teeth 71 are formed, and the base portion 72 has a stepped shape (convex shape) in cross section (see fig. 7).

In the present embodiment, such a hair pressing section comb tooth row 70 is arranged in a row on the hair pressing body 41. The hair pressing body 41 may be provided with a plurality of hair pressing portion comb rows 70.

In the present embodiment, the hair pressing body 41 is formed with a through hole 42 as a mounting portion penetrating in the vertical direction Z. The hair pressing part side comb-tooth row 70 is inserted into the through-hole 42 from below with the comb teeth 71 positioned above, and the hair pressing part side comb-tooth row 70 is attached to the hair pressing body 41 (see fig. 10).

The through hole 42 has a narrow upper portion 42a, an intermediate portion 42b having a width larger than that of the upper portion 42a, and a lower portion 42c having a width larger than that of the intermediate portion 42b, and an opening 42d (see fig. 7) opened upward is formed in the through hole 42.

That is, an upper stepped portion 41d and a lower stepped portion 41e are formed on the through hole 42 side of the hair pressing body 41.

As described above, in the present embodiment, the cross-sectional shape of the base portion 72 and the cross-sectional shape of the upper side of the through hole 42 are formed into a stepped shape corresponding to each other. Thus, when the base portion 72 is inserted into the through hole 42, the flange portion 72a can be brought into contact with the upper stepped portion 41d to prevent the detachment.

Then, in a state where the base portion 72 is inserted into the through hole 42, the plate-like metal plate 47 (see fig. 10) is inserted into the lower portion 42c and attached to the hair pressing body 41. This can prevent the hair pressing portion comb tooth rows 70 from falling off downward from the hair pressing body 41.

By providing the metal plate 47 in this manner and configuring the lower surface 47d of the metal plate 47 as a part of the opposing surface 41b (hair holding surface), heat can be efficiently transferred to the held hair. In the present embodiment, the metal plate 47 is fixed to the hair pressing body 41 in a state where the lower surface 47d thereof is positioned slightly above the opposing surface 41b (hair holding surface). In this way, the edge of the metal plate 47 can be prevented from contacting the hair, and the hair can be more smoothly pinched.

In the present embodiment, the cross-sectional shape of the base portion 72 is formed to be slightly smaller than the cross-sectional shape of the upper portion 42a and the cross-sectional shape of the middle portion 42b, and the hair pressing portion-side comb tooth rows 70 are attached to the upper portion 42a and the middle portion 42b of the through-hole 42 with a predetermined gap d2 therebetween (see fig. 7).

Specifically, in a state where the base portion 72 is inserted into the upper portion 42a and the middle portion 42b, a predetermined gap d2 is formed between the hair pressing portion comb tooth rows 70 and the through holes 42 in the vertical direction Z, the width direction Y, and the front-rear direction X.

In the present embodiment, since it is necessary to avoid overheating of the hair pressing portion 40 and the hair pressing portion 40 is required to have a certain degree of strength (heat-resistant strength or the like), the hair pressing portion 40 is formed of a poor conductor of heat and a material excellent in heat resistance (e.g., PBT or the like). On the other hand, the hair pressing portion side comb-tooth rows 70 need to be able to suppress heat transfer from the heater 50 to the comb teeth 71 and also need to be able to suppress deformation due to heat, and therefore the hair pressing portion side comb-tooth rows 70 are formed of a material (e.g., nylon resin or the like) that is a poor conductor of heat and has excellent heat resistance.

As described above, in the present embodiment, the hair pressing portion 40 and the base portion 72 (the hair pressing portion side comb tooth rows 70) are formed of different materials, and therefore have different thermal expansion coefficients. Specifically, the hair pressing part side comb tooth rows 70 are formed of a material having a thermal expansion coefficient larger than that of the hair pressing part 40.

Therefore, in the present embodiment, the predetermined gap d2 is formed between the hair pressing portion 40 and the base portion 72, and the expansion of the hair pressing portion side comb tooth rows 70 during heating can be absorbed by the gap d 2. In this way, deformation and breakage of the hair pressing portion side comb rows 70 and the hair pressing portion 40 due to expansion during heating can be suppressed. The size of the gap d2 can be set as appropriate depending on the material used.

Further, if the hair-curling-portion-side comb-tooth rows 60 and the hair-pressing-portion-side comb-tooth rows 70 are formed of a nylon resin having water-absorbing properties, the hair-curling-portion-side comb-tooth rows 60 and the hair-pressing-portion-side comb-tooth rows 70 absorb moisture when, for example, they come into contact with wet hair, and therefore static electricity is less likely to be generated.

Since the hair pressing portion 40 and the metal plate 47 are also formed of different materials, a predetermined gap d3 (see fig. 7) is also formed between the hair pressing portion 40 and the metal plate 47.

Specifically, one end 47a of the metal plate 47 is locked to the hook portion 41c, and the hook portion 41c is formed at the distal end (front end) of the hair pressing body 41. In a state where the one end 47a is locked to the hook 41c, the screw hole 47c formed in the other end 47b communicates with the screw hole 44b (see fig. 5) formed in the body portion 44, and the screw 93d is inserted into the screw holes 47c and 44 b. Thereby, the metal plate 47 is attached to the hair pressing body 41.

In this way, the metal plate 47 can be attached to the hair pressing body 41 with the gap d3 between the metal plate and the hair pressing portion 40. Therefore, the volume change of the metal plate 47 due to thermal expansion can be absorbed by the gap d3, and deformation and breakage of the metal plate 47 itself and the hair pressing portion 40 due to expansion of the metal plate 47 can be suppressed. The size of the gap d3 can be set as appropriate depending on the material used.

Here, in the present embodiment, since the surface temperature of the hair pressing portion 40 can be suppressed from being excessively high, the hair iron 10 can be used more comfortably, and the usability of the hair iron 10 can be further improved.

Specifically, as shown in fig. 6, a heat conduction suppressing portion 80 for suppressing heat transfer from the curl portion 31 to the hair pressing portion 40 is provided at a portion of the curl portion 31 facing the hair pressing portion 40.

In the present embodiment, the heat conduction suppressing member 81 is attached to the hair curling portion 31 so that the portion of the hair curling portion 31 facing the hair pressing portion 40 is exposed to the outer peripheral side surface (surface 81a), and the heat conduction suppressing member 81 is independent from the hair curling portion 31, so that the heat conduction suppressing portion 80 is provided in the hair curling portion 31 (see fig. 9).

In the present embodiment, the heat conduction suppressing portion 80 is provided in the curl portion 31 in the same manner as the curl portion-side comb tooth row 60.

That is, the heat conduction suppressing member 81 has flange portions 81c formed on the inner peripheral sides of both ends in the width direction Y, and has a stepped shape (convex shape) in cross section.

A groove 33 is formed in a portion of the curl portion 31 facing the hair pressing portion 40. The heat conduction suppressing member 81 is inserted into the recessed groove 33 while sliding in the front-rear direction, and the heat conduction suppressing member 81 is attached to the curl portion 31 (see fig. 9).

The concave groove 33 has a wide inner circumferential groove portion 33a and an outer circumferential groove portion 33b having a smaller width than the inner circumferential groove portion 33a, and the concave groove 33 is formed with an opening 33c opening to the outer circumferential side (see fig. 7).

That is, a pair of protruding portions 31c protruding from both sides of the recessed groove 33 toward the recessed groove 33 side are formed on the outer peripheral side of the curl portion 31.

In this way, the cross-sectional shape of the heat conduction suppressing member 81 and the cross-sectional shape of the concave groove 33 are formed in a stepped shape corresponding to each other, and the configuration can be made such that: when the heat conduction suppressing portion 80 is inserted into the recess 33, the flange portion 81c is brought into contact with the protruding portion 31c to prevent the falling-off.

In the present embodiment, the heat conduction suppressing member 81 has a cross-sectional shape slightly smaller than that of the recessed groove 33, and the heat conduction suppressing member 81 is attached to the recessed groove 33 of the curl portion 31 with a predetermined gap d4 provided therebetween (see fig. 7).

Specifically, in a state where the heat conduction suppressing member 81 is inserted into the recess 33, a predetermined gap d4 is formed between the curl portion 31 and the heat conduction suppressing member 81 in the vertical direction Z, the width direction Y, and the front-rear direction X.

Here, in the present embodiment, the curl portion 31 is formed of a metal that is a good conductor of heat so that heat from the heater 50 is easily transmitted. On the other hand, the thermal conduction suppressing member 81 needs to suppress the transmission of heat from the heater 50 to the hair pressing body 41 of the hair pressing section 40. Further, since the heat conduction suppressing member 81 needs to be able to suppress deformation due to heat, the heat conduction suppressing member 81 is formed of a material (e.g., PBT or the like) which is a poor conductor of heat and has excellent heat resistance.

As described above, in the present embodiment, the curl portion 31 and the thermal conduction suppressing member 81 are formed of different materials, and therefore have different thermal expansion coefficients. Specifically, the heat conduction suppressing member 81 is formed of a material having a thermal expansion coefficient larger than that of the hair curler 31.

Therefore, in the present embodiment, the predetermined gap d4 is formed between the curl portion 31 and the heat conduction suppressing member 81, and the expansion of the heat conduction suppressing member 81 during heating can be absorbed by the gap d 4. In this way, deformation and breakage of the heat conduction suppressing member 81 and the curler 31 due to expansion during heating can be suppressed.

In the present embodiment, the heat conduction suppressing member 81 is formed as a separate member from the curl portion 31 as the heat conduction suppressing member 80. Therefore, as compared with the case where the heat conduction suppressing member 80 is integrally provided to the hair curler 31, the heat conduction from the hair curler 31 to the heat conduction suppressing member 81 can be further suppressed. Further, the heat from the heater 50 can be further suppressed from being transmitted to the hair pressing body 41 of the hair pressing portion 40. In particular, by providing the gap d4, heat transfer from the hair curling portion 31 to the heat conduction suppressing member 81 can be suppressed. The curl portion 31 and the thermal conduction suppressing member 81 may be integrally provided by two-color molding or the like.

In the present embodiment, a plurality of grooves 81b are provided on the surface 81a of the heat conduction suppressing member 81, and a plurality of grooves 81b are provided in the heat conduction suppressing portion 80. A plurality of the concave grooves 81b are formed at intervals in the width direction Y so as to extend in the front-rear direction X.

As described above, since the heat conduction suppressing portion 80 is provided with the plurality of grooves 81b, the contact area between the heat conduction suppressing portion 80, which is a hair holding surface, and the hair pressing portion 40 is reduced, and the heat transfer from the curling portion 31 to the hair pressing portion 40 can be further reduced.

Further, since heat transfer when the finger, skin, or the like is in contact with the thermal conduction suppression part 80 can be reduced, it is also possible to suppress the occurrence of a situation where the user feels scalded when the finger or skin is in contact with the thermal conduction suppression part 80 during the permanent wave.

Further, the grooves 81b are provided along the longitudinal direction (the front-rear direction X), so that the heat conduction suppressing portion 80 and the hair pressing portion 40 have a slip-preventing effect when the hair is pinched therebetween, and the tip of the hair can be grasped more reliably.

Further, the concave groove 81b may be provided to extend in the width direction (width direction Y).

A recess 81d for avoiding the hook 41c is formed at the tip of the heat conduction suppressing member 81, and the heat conduction suppressing member 81 and the hook 41c do not interfere with each other when the hair pressing part 40 is closed.

In the present embodiment, the surface 81a of the heat conduction suppressing member 81 is formed of an arc surface having substantially the same curvature as the outer surface 31a of the curl portion 31.

Specifically, the portion of the surface 81a of the heat conduction suppressing member 81 not provided with the recessed groove 81b is formed with an arcuate surface having substantially the same curvature as the outer surface 31a of the curl portion 31.

The surface 62b of the base portion 62 of the hair-curling-portion-side comb tooth row 60 is also formed by an arc surface having substantially the same curvature as the outer surface 31a of the hair curling portion 31.

This can suppress the formation of a step between the outer surface 31a and the surface 62b of the curl portion 31 in a state where the heat conduction suppressing member 81 and the curl portion side element rows 60 are attached. As a result, the diameter of the hair roll can be set to a substantially constant diameter regardless of the surface of the permanent wave part 30 around which the hair is wound, and permanent wave can be performed without deforming the shape of the hair roll.

In addition, in a state where the hair pressing part side comb tooth row 70 is attached to the hair pressing part 40, the surface 72b of the base body part 72 of the hair pressing part side comb tooth row 70 is substantially flush with (at the same height as) the outer surface 41a of the hair pressing body 41. This can prevent a step from being formed between the outer surface 41a and the surface 72b of the hair pressing body 41 in a state where the hair pressing portion side comb tooth row 70 is attached to the hair pressing portion 40. As a result, even when the hair is permed without sandwiching the hair between the hair pressing portion 40 and the curler 31, the perm can be performed without deforming the shape of the curler.

In the present embodiment, the opposing surface 41b of the hair pressing body 41 is a concave arc surface, and the curvature of the opposing surface 41b is formed to be larger than the curvature of the outer surface 31a of the curl portion 31 (see fig. 7). Thus, a gap d5 is formed between the outer surface 31a of the curl portion 31 and the opposing surface 41b of the hair pressing body 41 (the center in the width direction Y), and a heat insulating structure formed of an air layer is formed. As a result, the heat transfer from the outer surface 31a of the curling portion 31 (the surface 81a of the heat conduction suppressing member 81) to the hair pressing portion 40 (the hair pressing body 41) can be further reduced.

Further, by making the curvature of the opposing surface 41b larger than the curvature of the outer surface 31a of the curl portion 31, the contact portions where the hair pressing portion 40 (hair pressing body 41) and the outer surface 31a (surface 81a) contact can be made at both ends in the width direction Y. Therefore, even when there is component variation or assembly variation, the hair pressing part 40 (hair pressing body 41) can be brought into contact with both ends, and therefore, hair can be reliably held at two points, and permanent waving can be smoothly performed.

Next, an example of the operation of the hair iron 10 having this configuration when curling hair will be described.

First, the user grips the grip 20 of the hair iron 10 (gripping step).

Next, the user operates the operation portion 43 to separate the inner side surface 40a of the hair pressing portion 40 from the outer surface 31a of the curl portion 31 (separating step).

Next, the hair is put between the hair pressing part 40 and the curling part 31 which are away from each other (hair setting step).

Next, the hair pressing portion 40 and the curling portion 31 facing each other are caused to sandwich the hair (hair sandwiching step).

Next, the hair iron 10 is rotated (preferably, rotated for a half cycle or more, and more preferably, rotated for a single cycle or more) while the hair is held between the hair holding portion 40 and the curly portion 31, and the hair other than the held portion is wound around the outer surface 31a of the curly portion 31 (curling step).

Next, in a state where the hair is sandwiched between the hair pressing portion 40 and the curly portion 31 and wound around the outer surface 31a, the hair iron 10 is pulled down toward the tip end side of the hair so that the hair slides between the hair pressing portion 40 and the curly portion 31 and the outer surface 31a, thereby curling the hair (pull-down step).

In this way, the hair is ironed into a curly shape.

In the pull-down step, the user may pull down the hair iron 10 toward the tip end of the hair with the knob 34d being held.

Further, the hair can be curled by pulling down the hair iron 10 toward the tip end side of the hair without pinching the hair between the hair pressing portion 40 and the curly portion 31, by winding the hair around the portion of the outer surface 31a of the curly portion 31 exposed in the state where the hair pressing portion 40 is closed and the outer surface 40b of the hair pressing portion 40, and by sliding the hair.

Further, even if the heat conduction suppressing portion 80 is provided at a portion of the curl portion 31 facing the hair pressing portion 40 as in the present embodiment, a temperature necessary for curling the hair into a curled shape can be secured.

For example, in the case where the temperature of the curling part 31 is heated to about 170.4 ℃, the temperature of the thermal conduction suppressing part 80 is about 149.3 ℃ and the temperature of the hair pressing body 41 is about 129.9 ℃.

As described above, in the present embodiment, the hair iron 10 includes: a curling portion 31 formed of a good thermal conductor around which hair is wound; a heater 50 for heating the hair curling portion 31; and a hair pressing portion 40 for sandwiching hair between itself and the outer surface 31a of the hair curling portion 31. The hair pressing portion 40 is provided with a hair pressing portion side comb tooth row 70.

By this, two methods can be used, namely: a method of curling hair while holding hair by the hair pressing portion 40, and a method of curling hair by rotating the hair iron 10 without using the hair pressing portion 40 (without holding hair by the hair pressing portion 40). As a result, the diameter of the hair curls can be made different when the hair is curled. Thus, two kinds of curl diameters can be realized, so that flexibility in hair styling can be increased, and for example, hair can be permed to have different curl diameters by changing a use method according to a hair part. As a result, the hair iron 10 can be used more comfortably, and the convenience of use of the hair iron 10 can be further improved.

Further, a heat conduction suppressing portion 80 for suppressing heat transfer from the curl portion 31 to the hair pressing portion 40 is provided at a portion of the curl portion 31 facing the hair pressing portion 40.

This can reduce the heat transfer from the outer surface 31a of the curling portion 31 to the hair pressing portion 40, thereby preventing the user from feeling scalded during the curling process. As a result, the hair iron 10 can be used more comfortably, and the convenience of use of the hair iron 10 can be further improved.

In addition, the hair pressing portion 40 is formed of a poor conductor of heat. This can further suppress heat transfer from the outer surface 31a of the curling portion 31 to the hair pressing portion 40, and can further suppress the user from feeling scalded during the curling process.

The curl portion 31 is formed in a cylindrical shape, and a plurality of curl portion-side comb tooth rows 60 formed of a poor thermal conductor are arranged at intervals in the circumferential direction at portions other than the portion where the thermal conduction suppression portion 80 is provided on the outer surface 31a of the curl portion 31.

Accordingly, the hair curler 31 can be spaced apart from the skin of the user by a predetermined distance, so that the user can use the hair iron 10 more comfortably without feeling scalded. Further, by providing the hair-curling-portion-side comb tooth rows 60, the hair can be easily gripped, and the hair can be more easily curled.

In addition, the heat conduction suppressing portion 80 is provided with a plurality of concave grooves 81 b. This can reduce the contact area between the heat conduction suppressing portion 80 of the curling portion 31 and the hair pressing portion 40, and can further reduce the heat transfer to the hair pressing portion 40. As a result, the occurrence of the condition that the user feels hot during the permanent wave can be further suppressed, and the hair iron 10 can be used more comfortably. Also, the convenience of use of the hair iron 10 can be further improved. And also can reduce the heat transfer to the skin when the thermal conduction suppression part 80 is in contact with the skin, so that the hair iron 10 can be used more comfortably.

The hair pressing portion comb tooth rows 70 are formed of a poor thermal conductor.

This can more reliably prevent the skin from coming into contact with the hair pressing portion 40. Therefore, the occurrence of the condition that the user feels hot can be further suppressed, and the hair iron 10 can be used more comfortably.

The hair pressing portion side comb tooth row 70 is formed of a material having a thermal expansion coefficient larger than that of the hair pressing portion 40, and the hair pressing portion side comb tooth row 70 is attached to the through hole 42 of the hair pressing portion 40 with a predetermined gap d2 therebetween.

This allows the gap d2 to absorb the expansion of the hair pressing portion side comb tooth rows 70 during heating, thereby suppressing deformation and breakage of the hair pressing portion 40.

(embodiment 2)

Next, embodiment 2 of the present invention will be described.

The hair iron 10A of the present embodiment has basically the same configuration as the hair iron 10 shown in the above-described embodiment 1.

That is, as shown in fig. 11, the hair iron 10A includes: a curling portion 31 formed of a good thermal conductor around which hair is wound; a heating unit 50 for heating the hair curling unit 31 (not shown in fig. 11); and a hair pressing portion 40 for sandwiching hair between itself and the outer surface 31a of the hair curling portion 31.

Here, the hair iron 10A of the present embodiment is mainly different from the hair iron 10 shown in embodiment 1 in that the hair curling portion 31 is not provided with the hair curling portion side comb tooth row, and the hair pressing portion 40 is not provided with the hair pressing portion side comb tooth row.

Although fig. 11 illustrates a structure in which the outer surface 31a of the curl portion 31 has projections and depressions, the outer surface 31a of the curl portion 31 may be formed in a smooth arc shape.

The present embodiment can also achieve the same operation and effect as those of the above-described embodiment 1.

While the preferred embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and various modifications are possible.

For example, in each embodiment, the following case is exemplified: a groove 33 is formed in a portion of the curl portion 31 facing the hair pressing portion 40, and the heat conduction suppressing member 81 is inserted into the groove 33 while sliding in the front-rear direction. However, the method of mounting the thermal conduction suppression member 81 is not limited to this. For example, the following structure may be adopted: the hair curler 31 is provided with a slit, the guide groove is provided on the surface of the hair curler 31 facing the slit, and the flange portion 81c of the heat conduction suppressing member 81 is inserted into the guide groove.

The specifications (shape, size, layout, and the like) of the heat conduction suppressing portion, each comb tooth row, and other portions can be appropriately changed.

As described above, the hair iron of the embodiment includes: a curling part formed of a good thermal conductor for winding hair; a heating part for heating the hair curling part; and a hair pressing portion for clamping hair between the hair pressing portion and an outer surface of the curling portion.

According to this structure, two methods can be used, namely: a method of using the hair curler while holding hair by the hair pressing portion, and a method of using the hair curler while rotating the hair curler without using the hair pressing portion (without holding hair by the hair pressing portion) to curl hair. As a result, the diameter of the hair curls can be made different when the hair is curled. In this way, two kinds of hair curl diameters can be realized, so that, for example, hair can be permed to have different hair curl diameters by changing the method of use depending on the hair part.

Further, the structure may be such that: the hair pressing portion includes a hair pressing portion side comb tooth row provided on the hair pressing portion.

With such a configuration, it is also possible to make the structure: during the perming process, the skin or fingers are not easily brought into direct contact with the hair pressing part.

Further, the structure may be such that: the hair pressing portion is provided with a heat conduction suppressing portion which is provided at a portion of the hair curling portion facing the hair pressing portion and suppresses heat transfer from the hair curling portion to the hair pressing portion.

With this configuration, the heat transfer from the outer surface of the curling portion to the hair pressing portion can be made relatively small, and thus the user can be prevented from feeling scalded during the curling process. As a result, the hair iron can be used more comfortably, and the convenience of use can be further improved.

Further, the hair pressing portion may be formed of a poor conductor of heat.

With this configuration, heat transfer from the outer surface of the curling portion to the hair pressing portion can be further suppressed, and the user can be further prevented from feeling scalded during the curling process.

Further, the structure may be such that: the hair curler is formed in a tubular shape, and a plurality of hair curler-side comb tooth rows formed of a defective heat conductor are arranged at intervals in a circumferential direction on an outer surface of the hair curler except for a portion where the heat conduction suppressing portion is provided.

With this configuration, the hair curler can be spaced from the skin of the user by a predetermined distance, so that the user can use the hair curler more comfortably without feeling hot. Further, by providing the hair-curling-portion-side comb tooth rows, the hair can be easily gripped, and the hair can be more easily curled.

Further, the structure may be such that: the heat conduction suppressing portion is provided with a plurality of grooves.

This reduces the contact area between the heat conduction suppressing portion of the curling portion and the hair pressing portion, and further reduces the heat transfer to the hair pressing portion. As a result, the occurrence of a condition that the user feels scalded during the permanent wave can be further suppressed. Also, the hair iron can be used more comfortably, and the convenience of use can be further improved. Further, the heat transfer to the skin when the thermal conduction suppression part is in contact with the skin can be reduced, so that the hair iron can be used more comfortably.

Further, the hair pressing portion side comb tooth rows may be formed of a poor thermal conductor.

With this configuration, the contact of the skin with the hair pressing portion can be more reliably suppressed. Therefore, the occurrence of the condition that the user feels hot can be further suppressed, and the hair iron can be used more comfortably.

Further, the structure may be such that: the hair pressing portion side comb tooth rows are formed of a material having a thermal expansion coefficient larger than that of the hair pressing portion, and are attached to the attachment portions of the hair pressing portion with a predetermined gap therebetween.

With this configuration, the expansion of the comb-teeth rows on the hair pressing portion side during heating can be absorbed by the gap, and the deformation and damage of the hair pressing portion can be suppressed.

As described above, the present invention can provide a remarkable effect that it can be used comfortably and is easy to use, and therefore, it can be applied to a hair iron for curling hair or the like, and an application such as a hair iron for pets, and is useful.

Claims

1. A hair iron, wherein,

this hair iron includes:

a curling part formed of a good thermal conductor for winding hair;

a heating unit for heating the hair curling unit;

a hair pressing portion for sandwiching the hair between the hair pressing portion and an outer surface of the curling portion; and

a heat conduction suppressing portion provided at a portion of the hair curling portion facing the hair pressing portion, for suppressing heat transfer from the hair curling portion to the hair pressing portion,

the heat conduction suppressing portion has a plurality of grooves extending in a direction of a central axis of the hair curling portion on a surface thereof, and the plurality of grooves are provided at intervals in a direction orthogonal to the direction of the central axis of the hair curling portion.

2. The hair iron as set forth in claim 1,

the hair iron further includes a hair pressing portion side comb tooth row provided to the hair pressing portion.

3. The hair iron as set forth in claim 1,

the hair pressing portion is formed of a poor conductor of heat.

4. The hair iron as set forth in claim 1,

the hair curling part is formed in a cylindrical shape,

a plurality of hair-curling-portion-side comb-tooth rows each formed of a defective heat conductor are arranged at intervals in a circumferential direction on the outer surface of the hair curling portion except for the portion where the heat conduction suppressing portion is provided.

5. The hair iron as set forth in claim 3,

the hair curling part is formed in a cylindrical shape,

6. The hair iron as set forth in claim 2,

the hair pressing section side comb tooth rows are formed of a poor conductor of heat.

7. The hair iron as set forth in any one of claims 1 to 6,

the hair pressing part side comb tooth rows are formed of a material having a thermal expansion coefficient larger than that of the hair pressing part,

the hair pressing portion side comb tooth row is attached to the attachment portion of the hair pressing portion with a predetermined gap therebetween.