Hair iron

Abstract

We offer a hair iron that allows you to create more subtle nuances in your hair styling. [Solution] The hair iron 1 is equipped with a pair of arm sections 10A and 10B. The pair of arm sections 10A and 10B extend from a base end 11 to a tip end 12, and are connected at the base end 11 so that the tip end 12 can be opened and closed. The hair iron 1 is equipped with a clamping section 20 and a gripping section 30. The clamping section 20 is provided on the tip end 12 side of the arm sections 10A and 10B and is capable of clamping hair. The gripping section 30 is provided on the base end 11 side of the arm sections 10A and 10B. The gripping section 30 is the part that grips the hair when clamping it. The width W20 of the clamping section 20 is set to be approximately 0.39 times the width W30 of the gripping section 30.

Description

Technical Field

[0001] The present invention relates to a hair iron.

Background Art

[0002] Patent Document 1 discloses a conventional hair iron. This hair iron includes a pair of iron pieces that are connected to be openable and closable at the base end. A user styles the hair by sandwiching the hair between the pair of iron pieces.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In hair styling, there is a desire to create more delicate nuances.

[0005] The present invention has been completed based on the above circumstances, and an object thereof is to provide a hair iron that can create more delicate nuances in hair styling.

Means for Solving the Problems

[0006] The hair iron according to the present invention is a hair iron including a pair of arm portions that extend from the base end to the tip end and are connected on the base end side and provided with an openable and closable tip end side, and a sandwiching portion provided on the tip end side of the arm portion and capable of sandwiching the hair, and a gripping portion provided on the base end side of the arm portion and gripped when sandwiching the hair, wherein the width of the sandwiching portion is set to be 0.3 times or more and 0.5 times or less the width of the gripping portion.

[0007] This hair iron has a relatively small clamping section compared to the width of the gripping section. Therefore, it is easy to create a narrower clamping section compared to conventional models. For example, the gripping section of this hair iron can be made the same easy-to-grip thickness as conventional models, while the clamping section's width can be made to be the same size as the width of a fingertip. Such a narrow clamping section allows the hair to be gripped with a sensation similar to pinching with your fingertips.

[0008] Therefore, the hair iron according to the present invention can create more subtle nuances in hair styling. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view showing a hair iron according to an example. [Figure 2] This is a vertical cross-sectional view showing a hair iron according to an embodiment, with the pair of arms in the open position. [Figure 3] This is a plan view showing a hair iron according to an embodiment. [Figure 4] This is a side view showing a hair iron according to an embodiment. [Figure 5] This is a side view showing a hair iron according to an embodiment, with a close-up view of the tip of the upper arm. [Figure 6] This is a rear view showing a hair iron according to an embodiment, with a close-up view of the tip of the upper arm. [Figure 7] This is a perspective view showing a hair iron according to an embodiment, with a magnified view of the tip of the upper arm. [Figure 8] This is a vertical cross-sectional view showing a hair iron according to an embodiment, with a magnified view of the tip of the arm portion with the case member attached. [Figure 9] This is an exploded perspective cross-sectional view showing an enlarged view of the main part of the case member according to the embodiment. [Modes for carrying out the invention]

[0010] Preferred embodiments of the present invention are shown below.

[0011] In the hair iron according to the present invention, the clamping portion comprises a plate exposed to a clamping surface that clamps hair, a housing that holds the plate, and a cap attached to the housing at the front end. The base end edge of the cap is located on the outer surface opposite to the clamping surface, closer to the base end than the front end edge of the plate, and at least between the side surface located in the width direction of the clamping portion and the clamping surface, it may be located closer to the front end than the front end edge of the plate. In this case, when styling hair by pulling it while clamping it with the clamping portion, the hair under tension can be prevented from getting caught and pinched at the boundary between the cap and the housing.

[0012] Furthermore, in the hair iron according to the present invention, an inclined surface may be formed on the outer surface of the cap opposite to the clamping surface, sloping from the base end towards the tip towards the clamping surface. In this case, the inclined surface of the cap allows the tip of the clamping portion of the hair iron to be tapered. As a result, the tip of the clamping portion of the hair iron can be easily inserted into the roots of the hair, enabling more precise styling. Moreover, with this configuration, the hair iron can achieve a clamping portion with a tapered tip shape that makes it easy to separate the hair, thus making it easier to accurately clamp the desired hair.

[0013] Furthermore, in the hair iron according to the present invention, an inclined surface may be formed on the side of the cap, sloping toward the center in the width direction of the clamping portion from the base end toward the tip end. In this case, the inclined surface of the cap allows the tip of the clamping portion of the hair iron to be tapered. As a result, the tip of the clamping portion of the hair iron can be easily inserted into the roots of the hair, enabling more precise styling. Moreover, with this configuration, the hair iron can realize a clamping portion with a tapered tip shape that makes it easy to separate the hair, making it easier to accurately clamp the desired hair.

[0014] Furthermore, the hair iron according to the present invention is equipped with a case member that can be detachably placed over the clamping portion, and the case member may have through holes that penetrate from the inside to the outside. In this case, even if the case member is placed over the clamping portion of the hair iron while it is still hot, such as immediately after use, heat can be released to the outside of the case member through the through holes. For example, when using the through holes to attach another member, such as a nameplate made of a material with excellent thermal conductivity, to the outer surface of the case member, heat from the inside of the case member can be effectively transferred to the other member through the through holes. As a result, the hair iron can effectively release heat to the outside of the case member.

[0015] <Examples> Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The hair iron 1 according to this embodiment comprises a pair of arm portions 10A and 10B and a case member 90, as shown in Figures 1 to 4. The pair of arm portions 10A and 10B extend from a base end 11 to a tip end 12, respectively. The pair of arm portions 10A and 10B are connected at the base end 11 and are provided so as to be openable and closable at the tip end 12. The hair iron 1 can be used to style hair by opening the pair of arm portions 10A and 10B, clamping the hair between them, and applying heat to the hair. When the hair iron 1 is not in use, the pair of arm portions 10A and 10B are closed. In this state, the case member 90 is detachably placed over the clamping portion 20 at the tip end 12 of the pair of arm portions 10A and 10B, which will be described later.

[0016] Hereinafter, in the hair iron 1, a state where the pair of arm portions 10A and 10B are open is referred to as an open state (see FIG. 2), and a state where the pair of arm portions 10A and 10B are closed is referred to as a closed state. The directions used in the description of each component member are based on the closed state of the pair of arm portions 10A and 10B. The coordinate axes shown in each figure are such that the positive direction of the Z-axis is upward, the negative direction of the Z-axis is downward, the positive direction of the X-axis (the tip portion 12 side of the arm portions 10A and 10B) is forward, the negative direction of the X-axis (the base end portion 11 side of the arm portions 10A and 10B) is backward, the positive direction of the Y-axis is rightward, and the negative direction is leftward, respectively. The front-rear direction is also referred to as the extending direction of the arm portions 10A and 10B, and the left-right direction is also referred to as the width direction of the arm portions 10A and 10B. In the description of each of the arm portions 10A and 10B, the side facing each other of the pair of arm portions 10A and 10B is the inner side or the front side, and the side opposite to the side facing each other is the outer side or the back side. That is, the up-down direction is also referred to as the inner-outer direction or the front-back direction of the arm portions 10A and 10B.

[0017] As shown in FIG. 2, the pair of arm portions 10A and 10B rotate relative to each other about a hinge portion 13 provided at the base end portion 11. The pair of arm portions 10A and 10B are displaceable between an open state and a closed state. FIG. 2 shows the open state of the pair of arm portions 10A and 10B. The pair of arm portions 10A and 10B each extend linearly from the base end portion 11 toward the tip portion 12.

[0018] The hair iron 1 includes a clamping portion 20 and a gripping portion 30. The clamping portion 20 is provided on the tip portion 12 side (front end side) of the pair of arm portions 10A and 10B and can clamp hair. The inner surface of the clamping portion 20 is a clamping surface 20A. The clamping surface 20A is a surface that clamps hair when the clamping portion 20 clamps hair. The gripping portion 30 is provided on the base end portion 11 side (rear end side) of the pair of arm portions 10A and 10B and is gripped by a user when clamping hair.

[0019] As shown in FIG. 3, the width W20 of the clamping portion 20 is smaller than the width W30 of the gripping portion 30. Specifically, the width W20 of the clamping portion 20 is set to be not less than 0.3 times and not more than 0.5 times the width W30 of the gripping portion 30. More specifically, the width W20 of the clamping portion 20 is about 0.39 times the width W30 of the gripping portion 30. Specifically, in the case of this embodiment, the width W20 of the clamping portion 20 is about 11.4 mm, and the width W30 of the gripping portion 30 is about 29 mm.

[0020] As shown in FIGS. 1 to 4, the hair iron 1 includes a display portion 14. The display portion 14 is provided on the outer surface of the gripping portion 30 in the upper arm portion 10A. The display portion 14 has, for example, an LED. The display portion 14 shows the on / off state of the power supply, the set temperature, the charging state, and the like.

[0021] As shown in FIGS. 1 to 4, the hair iron 1 has a plug-in port 15 for a USB cable C. The plug-in port 15 is compatible with USB Type-C. The plug-in port 15 is provided at the base end portion 11 of the upper arm portion 10A and opens rearward. The hair iron 1 is connected to a power supply device (not shown) via the USB cable C. A power supply device compliant with the USB PD (Power Delivery) standard can be used.

[0022] Each of the arm portions 10A and 10B includes a housing 16. Inside the housing 16, various components constituting the hair iron 1 are accommodated. As shown in FIG. 2, the housing 16 accommodates a battery 17, a control board 18, etc. on the gripping portion 30 side.

[0023] The battery 17 is accommodated in the housing 16 corresponding to the gripping portion 30 in the lower arm portion 10B. The battery 17 is a rechargeable secondary battery such as a lithium-ion battery. The battery 17 is charged by connecting a power supply device (not shown) via the USB cable C. The hair iron 1 operates with the power supplied from the battery 17.

[0024] As shown in Figure 2, the control board 18 is housed in a housing 16 that corresponds to the gripping portion 30 in the upper arm portion 10A. The control board 18 is, for example, a printed circuit board. The control board 18 has surface-mounted components such as electronic components for controlling each part of the hair iron 1, LEDs for the display portion 14, and a connector to which the USB cable C is connected.

[0025] As shown in Figure 4, the hair iron 1 is equipped with a switch 19. The switch 19 switches the power of the hair iron 1 on and off. When the power of the hair iron 1 is turned on by operating the switch 19, the plate 40, which will be described later, can be used with the plate heated. The switch 19 can switch the set temperature during heating. The hair iron 1 allows selection of two set temperatures by operating the switch 19. The switch 19 is positioned in a location that is difficult for the user's hand to touch when gripping the grip 30, specifically, it is provided protruding downward from the inner surface of the upper arm 10A toward the lower arm 10B. In this way, the hair iron 1 aims to suppress accidental operation of the switch 19.

[0026] The switch 19 is slidable in the forward and backward directions. When the switch 19 shown in Figure 4 is in its furthest rear position (rear position), the hair iron 1 is powered off. When the switch 19 is in its furthest forward position (forward position), the hair iron 1 is powered on and set to the higher of the two temperature settings. When the switch 19 is in an intermediate position between the rear and forward positions (intermediate position), the hair iron 1 is powered on and set to the lower of the two temperature settings. The switch 19 automatically moves to the rear position, which is the power-off position, by covering the clamping portion 20 with the case member 90.

[0027] As shown in Figures 5 to 8, the clamping portion 20 has a plate 40 and an elastic member 41. The plate 40 and the elastic member 41 are housed in a housing 16. The plate 40 is provided on each of the pair of arm portions 10A and 10B. Each plate 40 is positioned so as to be exposed to the clamping surface 20A of the clamping portion 20. In detail, the surface of the plate 40 on the clamping portion 20 side protrudes inward from the surface of the housing 16 on the clamping portion 20 side. When the hair iron 1 clamps hair with the clamping portion 20, the hair is clamped by the plate 40.

[0028] The plate 40 is a roughly rectangular plate that is long in the front-to-back direction and extends along the clamping portion 20. The plate 40 is the part that comes into contact with the hair when the hair is clamped by the clamping portion 20. Inside the plate 40 are a heater 42, a temperature sensor 43, a thermal fuse 44, etc. The plate 40 applies heat from the heater 42, whose temperature is controlled based on the temperature sensor 43, to the hair. In this embodiment, the width W40 of the plate 40 is approximately 6 mm.

[0029] As shown in Figure 6, the edge 40A of the plate 40 on the tip end 12 side is positioned at a distance L from the tip of the cap 50 (described later), i.e., the tip of the clamping portion 20, toward the base end 11. In this embodiment, this distance L is set to approximately 6 mm. The distance L is set to be approximately the same size as the width of the plate 40.

[0030] The elastic member 41 is positioned on the back side of the plate 40. The elastic member 41 applies an elastic force to the plate 40 toward the front side. The elastic member 41 is a conical coil spring. The plate 40 is held in a floating state from the housing 16 while being subjected to the elastic force of the elastic member 41. The elastic member 41 is positioned at two locations, front and rear, on the back side of the plate 40 in the clamping portion 20 (see Figure 2). When a force is applied toward the back side of the plate 40, it can be displaced toward the back side against the elastic force of the elastic member 41.

[0031] As shown in Figures 5 to 8, the clamping portion 20 has a cap 50. A cap 50 is provided on each of the arm portions 10A and 10B. The cap 50 is attached to the housing 16 at the tip portion 12 of each arm portion 10A and 10B. The outer surface of the cap 50 attached to the housing 16 is continuous with the outer surface of the housing 16 without any steps. In this embodiment, the cap 50 is fitted to the housing 16 using a spigot joint.

[0032] As shown in Figure 5, the outer edge 50A of the cap 50 on the base end 11 side, opposite to the clamping surface 20A, is located closer to the base end 11 than the edge 40A of the plate 40 on the tip end 12 side. Also, as shown in Figures 5 and 6, the edge 50B of the cap 50 on the clamping surface 20A side, on the base end 11 side, is located closer to the tip end 12 than the edge 40A of the plate 40 on the tip end 12 side. By positioning the edge 50B of the cap 50 closer to the tip end 12 than the edge 40A of the plate 40 on the tip end 12 side, as shown in Figure 6, there is no boundary between the cap 50 and the housing 16 on the side of the plate 40.

[0033] Furthermore, as shown in Figure 5, the edge 50C of the cap 50 on the base end 11 side, which is on the clamping surface 20A side of the side located in the width direction (left-right direction) of the clamping portion 20, is located closer to the tip 12 than the edge 40A of the plate 40, similar to the edge 50B. By positioning the edge 50C of the cap 50 closer to the tip 12 than the edge 40A of the plate 40, as shown in Figure 5, there is no boundary between the cap 50 and the housing 16 on the side of the plate 40, specifically on the clamping surface 20A side of the side located in the width direction of the clamping portion 20.

[0034] As shown in Figure 5, the outer edge 50D on the side of the clamping portion 20 opposite to the clamping surface 20A, on the left-right side, is located closer to the base end 11 than the edge 40A on the tip end 12 side of the plate 40, similar to edge 50A. Edges 50C and 50D are connected by edge 50E. In a side view from the left-right direction, edge 50E extends diagonally from the inside to the outside of the clamping portion 20 in the direction of the base end 11 (rearward). The connections between edge 50E and edge 50D, and between edge 50E and edge 50C, are smoothly formed by curved edges.

[0035] As shown in Figure 7, the edges 50C and 50B of the cap are connected by an edge 50F. As described above, both edge 50C and edge 50B are positioned closer to the tip 12 than edge 40A on the tip 12 side of the plate 40. The edge 50F connecting edge 50C and 50B is also positioned closer to the tip 12 than edge 40A on the tip 12 side of the plate 40.

[0036] As shown in Figure 5, the cap 50 has an inclined surface 51. The inclined surface 51 is visible on the outer side of the cap 50 in a side view. The inclined surface 51 slopes toward the clamping surface 20A from the base end 11 toward the tip end 12. Also, as shown in Figure 6, the cap 50 has an inclined surface 52. The inclined surface 52 is visible on the side of the cap 50 in the width direction in a plan view. The inclined surface 52 slopes toward the center in the width direction from the base end 11 toward the tip end 12. These inclined surfaces 51 and 52 form a smoothly continuous three-dimensional curved surface. As a result, the cap 50 tapers toward the clamping surface 20A and toward the center in the width direction from the base end 11 toward the tip end 12.

[0037] The case member 90 is detachably placed over the closed clamping portion 20 from the front. As shown in Figures 8 and 9, the case member 90 has a case body 91 and a nameplate 92. The case body 91 is a bottomed cylindrical shape that is closed at the tip 12 side. Through holes 91A are formed in the case body 91. The through holes 91A penetrate the case body 91 from the inside to the outside. Two through holes 91A are formed at the end of the case body 91 on the tip 12 side. Each of the through holes 91A is formed in the shape of a rectangular hole and is formed side by side in the left-right direction.

[0038] The nameplate 92 is attached to the front end 12 of the case body 91. The nameplate 92 has two claws 92A. The two claws 92A are each inserted into the through holes 91A and snap-fit ​​into place on the case body 91.

[0039] Next, the operation of the hair iron 1 in this embodiment will be explained. The hair iron 1 is palm-sized. The width W20 of the clamping part 20 of the hair iron 1 is set to approximately 11.4 mm. This width W20 of the clamping part 20 is approximately 0.39 times the width W30 of the gripping part 30, which is approximately 29 mm, and is set to be extremely small. In this way, because the width W20 of the clamping part 20 of the hair iron 1 is small compared to the width of the gripping part 30, it can be used with the feeling of pinching the hair with your fingertips. The hair iron 1 makes it possible to create more detailed nuances in hairstyles, including bangs and fine hairs around the face such as sideburns.

[0040] Hair iron 1 is powered by battery 17, making it cordless. Therefore, hair iron 1 can be used without the tension and weight of a power cord, making it ideal for precise, nuanced styling. Charging of battery 17 begins when the USB cable C is plugged into hair iron 1 and connected to a power supply. The display unit 14 indicates when battery 17 is fully charged. Once battery 17 is fully charged, disconnect the USB cable C. Note that hair iron 1 can also be powered by electricity from a power supply connected via USB cable C, in addition to battery 17.

[0041] When using the hair iron 1, the user removes the case component 90 and opens the hair iron 1. After opening the hair iron 1, the user slides the switch 19 forward from the rear end position, which is the power-off position. The user moves the switch 19 to either the middle position or the front end position to set the desired temperature. This set temperature is displayed on the display unit 14.

[0042] Next, the user of the hair iron 1 inserts the clamping portion 20 of the pair of arm portions 10A and 10B into the hair from the tip portion 12 side in order to clamp the hair with the clamping portion 20. At this time, the clamping portion 20 is inserted well up to near the roots of the hair by the tapered cap 50 which has inclined surfaces 51 and 52.

[0043] Furthermore, the cap 50 is a separate component from the housing 16 and is fitted to the tip of the housing 16 using a spigot mechanism. As a result, heat is less likely to be transferred to the tip of the hair iron 1 compared to a case where the housing 16 directly constitutes the tip of the clamping portion 20. In addition, because heat from the plate 40 is less likely to be transferred to the tip of the clamping portion 20 of the hair iron 1, the plate 40 also has excellent heat retention.

[0044] The user grips the gripping part 30 to close the pair of arms 10A and 10B in order to clamp the hair between the clamping parts 20 of the pair of arms 10A and 10B. As a result, the hair is clamped between the plates 40 of the clamping parts 20. The plates 40 are displaced by the action of the elastic member 41 and come into close contact with the hair. Because the stroke of the plates 40 is large, the surface of the plates 40 easily comes into close contact with the hair, and heat is easily transferred to the hair. Also, because the plates 40 are easily displaced with little force, the movement of the fingertips is easily transmitted to the plates 40.

[0045] In the hair iron 1, the edge 50C on the clamping surface 20A side of the base end 11 side of the cap 50, which is located in the width direction of the clamping portion 20, is located closer to the tip 12 than the edge 40A on the tip 12 side of the plate 40. Therefore, the hair iron 1 can prevent hair from getting caught in the boundary between the cap 50 and the housing 16.

[0046] For example, consider a scenario where hair is clamped by the plate 40 of the clamping part 20, and the hair is pulled to style it. In this case, the hair is under tension between the part clamped by the plate 40 and the scalp. If the hair comes into contact with the side of the clamping part 20 in this state, there is a risk that it may get caught and pinched at the boundary between the cap 50 and the housing 16.

[0047] The hair iron 1 positions the edge 50C of the cap 50 closer to the tip 12 than the edge 40A of the plate 40 on the tip 12 side. That is, as shown in Figure 5, the hair iron 1 does not have a boundary between the cap 50 and the housing 16 on the side of the clamping surface 20A of the side of the clamping portion 20 that is located in the width direction, corresponding to the side of the plate 40. As a result, the hair iron 1 can prevent hair under tension from coming into contact with the boundary between the cap 50 and the housing 16, and can prevent hair from getting caught in the boundary between the cap 50 and the housing 16. Furthermore, even when using the hair iron to curl hair, for example, by clamping the hair between the plates 40 and then pressing it against the side of the clamping portion 20 located in the width direction, it is possible to prevent hair from getting caught between the cap 50 and the housing 16.

[0048] Furthermore, in the hair iron 1, the edge 50B of the cap 50 located on the clamping surface 20A side is positioned closer to the tip 12 than the edge 40A of the plate 40 on the tip 12 side. That is, as shown in Figure 6, in the hair iron 1, there is no boundary between the cap 50 and the housing 16 on the side of the plate 40 at the clamping surface 20A. As a result, the hair iron 1 can further suppress the hair being caught in the boundary between the cap 50 and the housing 16 when it is clamped by the plate 40.

[0049] Furthermore, the hair iron 1 positions the edge 50F between the edge 50B located on the clamping surface 20A side of the cap 50 and the edge 50C located on the side of the clamping portion 20, closer to the tip 12 than the edge 40A on the tip 12 side of the plate 40. As described above, when using the hair iron 1 for the purpose of curling hair, the hair is pressed against the outer surface of the clamping portion 20 under tension. In this case, the hair is pressed more strongly against the edge portion between the side of the clamping portion 20 located in the width direction and the clamping surface 20A. The hair iron 1 positions the edge 50F of the cap 50 corresponding to this edge portion closer to the tip 12 than the edge 40A on the tip 12 side of the plate 40. This further prevents the hair from getting caught in the boundary between the cap 50 and the housing 16.

[0050] On the other hand, of the edges of the cap 50 on the base end 11 side, the outer edge 50A overlaps with the edge 40A on the tip end 12 side of the plate 40, extending further towards the base end 11. In this way, the cap 50 fits into the housing 16 with sufficient engagement on the outer side. Therefore, compared to a case where the edge of the cap 50 on the base end 11 side is in the same position on the outer side as on the clamping surface 20A side, the cap 50 is less likely to come off the housing 16 unexpectedly. In addition, the cap 50, which is provided as a separate component from the housing 16, is less susceptible to heat transfer compared to the housing 16 which directly holds the plate 40. Therefore, the hair iron 1 can increase the area on the surface of the clamping part 20 where heat is less likely to be transferred by expanding the area of ​​the cap 50 on the outer side of the clamping part 20. As a result, the hair iron 1 has excellent heat retention for the plate 40 because heat from the plate 40 is less likely to be transferred to the tip of the clamping part 20.

[0051] Furthermore, the fact that the outer edge 50A of the cap 50 is positioned closer to the base end 11 than the edge 40A of the tip end 12 of the plate 40 is also advantageous from the standpoint of the design of the hair iron 1. By positioning the edge 50A of the cap 50 closer to the base end 11, the hair iron 1 gives the clamping part 20 a balanced and stable design. For example, in the case of an elongated clamping part, if the boundary between the cap and the housing is positioned closer to the tip of the clamping part, that is, if the edge of the cap is positioned closer to the tip of the clamping part, it can result in a design that feels cramped at the tip and unstable, as if the cap might come off. In contrast, by positioning the edge of the cap closer to the base end, the area of ​​the cap portion relative to the entire clamping part can be made to appear wider, giving the design an impression of openness and stability. Hair iron 1 achieves a stable design by positioning the edge 50A of the cap 50 closer to the base end 11 than the edge 40A of the tip end 12 side of the plate 40. This eliminates the feeling that the tip end 12 side is cramped or unstable.

[0052] After using the hair iron 1, the user slides the switch 19 to the power-off position at the rear end to turn off the power. Then, the hair iron 1 is closed and the case member 90 is placed over it. Even if the user forgets to move the switch 19 to the power-off position and closes the hair iron 1, placing the case member 90 over it will automatically move the switch 19 to the power-off position. Therefore, the hair iron 1 can be prevented from being left powered on.

[0053] Furthermore, the case member 90 has a through hole 91A. Therefore, even if the hair iron 1 is covered with the case member 90 before it has sufficiently dissipated heat, heat can be released to the outside of the case member 90 through the through hole 91A of the case body 91. In addition, since the claw portion 92A of the nameplate 92 is inserted into the through hole 91A, heat dissipation from the case member 90 to the outside is promoted via the nameplate 92 having the claw portion 92A.

[0054] Next, the operation and effects of the embodiment configured as described above will be explained. The hair iron 1 according to this embodiment comprises a pair of arm portions 10A and 10B. The pair of arm portions 10A and 10B extend from a base end 11 to a tip end 12, and are connected at the base end 11 side, with the tip end 12 side being able to open and close. The hair iron 1 comprises a clamping portion 20 and a gripping portion 30. The clamping portion 20 is provided on the tip end 12 side of the arm portions 10A and 10B and is capable of clamping hair. The gripping portion 30 is provided on the base end 11 side of the arm portions 10A and 10B. The gripping portion 30 is the part that grips hair when clamping it. The width W20 of the clamping portion 20 is set to approximately 0.39 times the width W30 of the gripping portion 30.

[0055] Thus, the width W20 of the clamping portion 20 of the hair iron 1 is relatively smaller compared to the width W30 of the gripping portion 30. Therefore, the hair iron 1 can easily be equipped with a narrower clamping portion compared to conventional hair irons. Specifically, the width of the gripping portion 30 of the hair iron 1 is approximately 29 mm, which is the same easy-to-grip thickness as conventional models, and the width W20 of the clamping portion 20 is approximately 6 mm, which is extremely narrow compared to conventional models, similar to the width of a fingertip. Such a narrow clamping portion 20 allows the hair to be clamped with a feeling as if pinching it with your fingertips.

[0056] Therefore, the hair iron 1 according to this embodiment can create more subtle nuances in hair styling.

[0057] Furthermore, in the hair iron 1 according to this embodiment, the clamping portion 20 has a plate 40. The plate 40 is exposed to the clamping surface 20A that clamps the hair in the clamping portion 20. The plate 40 is held in a housing 16. A cap 50 is attached to the front end 12 side of the housing 16. The cap 50 is fitted to the housing 16 with a spigot. The cap 50 has edges 50A and 50F located on the base end 11 side. Edge 50A is located on the outer surface side opposite to the clamping surface 20A, and is closer to the base end 11 than the edge 40A on the front end 12 side of the plate 40. Edge 50F is located between the side surface located in the width direction of the clamping portion 20 and the clamping surface 20A, and is closer to the front end 12 than the edge 40A on the front end 12 side of the plate 40. Therefore, when styling hair by pulling it while holding it in the clamping part 20, the hair iron 1 can prevent tensioned hair from getting caught and pinched at the boundary between the cap 50 and the housing 16.

[0058] Furthermore, in the hair iron 1 according to this embodiment, an inclined surface 51 is formed on the outer surface of the cap 50, sloping toward the clamping surface 20A from the base end 11 toward the tip end 12. Also, an inclined surface 52 is formed on the side surface of the cap 50, sloping toward the widthwise center of the clamping portion 20 from the base end 11 toward the tip end 12. As a result, the hair iron 1 can form a tapered tip for the clamping portion 20 using these inclined surfaces 51 and 52. Consequently, the hair iron 1 can easily insert the tip of the clamping portion 20 into the roots of the hair, enabling more precise styling.

[0059] Furthermore, the hair iron 1 according to this embodiment includes a case member 90. The case member 90 is detachably placed over the clamping portion 20. The case member 90 has a through hole 91A that penetrates from the inside to the outside. Therefore, the hair iron 1 can effectively release heat to the outside of the case member 90 through the through hole 91A. The hair iron 1 also has a nameplate 92 that is attached to the case body 91 by inserting a claw portion 92A into the through hole 91A. Therefore, the hair iron 1 can effectively transfer heat from the inside of the case member 90 to the nameplate 92 through the through hole 91A. As a result, the hair iron 1 can effectively release heat to the outside of the case member 90.

[0060] <Other examples> The present invention is not limited to the embodiments described above and in the drawings, and the following embodiments, for example, are also included in the technical scope of the present invention. (1) The hair iron according to the present invention is not limited to those that can be used cordlessly, but may also be a wired type that is used by receiving power only through a power cord. (2) The width of the clamping portion according to the present invention is not limited to the width exemplified in the above embodiment. The width of the clamping portion may be 0.3 times or more and 0.5 times or less the width of the gripping portion, preferably 0.3 times or more and 0.45 times or less the width of the gripping portion, and more preferably 0.3 times or more and 0.4 times or less. If the width of the clamping portion is within these ranges, a hair iron with a sufficiently thin clamping portion can be easily realized while maintaining the ease of gripping of the gripping portion. (3) The specific size of the width of the clamping portion is not limited to the size exemplified in the above embodiment. The width of the clamping portion can be 6 mm or more and 20 mm or less, preferably 8 mm or more and 15 mm or less, and more preferably 10 mm or more and 13 mm or less. If the width of the clamping portion is within these ranges, it is possible to achieve a feeling of pinching the hair with your fingertips when clamping the hair with the clamping portion. Also, if the width of the clamping portion is within these ranges, it is easy to style the hair to the user's preference, regardless of the length of the hair being clamped. For example, if the width of the clamping portion is wider than the above range, it becomes difficult to grasp the hair when using it on relatively short hair. Also, when sliding the hair to curl it while it is clamped in the clamping portion, it is difficult to intuitively understand what angle to slide the hair at to achieve the desired curl. In contrast, if the width of the clamping portion is within the above ranges, it can be brought closer to the feeling of grasping the hair with your fingers and sliding it, and it is intuitively easy to understand the angle setting for creating the desired curl. (4) If the specific size of the width of the clamping portion is within the above ranges, the specific size of the width of the plate may be within the following ranges. That is, the width of the plate may be 4 mm or more and 15 mm or less, preferably 5 mm or more and 10 mm or less, and more preferably 6 mm or more and 8 mm or less. (5) When the specific width of the gripping portion is within the above ranges, the width of the gripping portion is preferably 15 mm or more and 45 mm or less, more preferably 20 mm or more and 40 mm or less, and even more preferably 25 mm or more and 35 mm or less. If the width of the gripping portion is within these ranges, an easy-to-grip gripping portion can be realized. (6) The configuration of the clamping portion according to the present invention is not limited to the configuration exemplified in the above embodiment. The clamping portion may, for example, not have a cap and may be configured with a housing and a plate. (7) When the clamping portion according to the present invention has a cap and this cap is attached to the housing, the joining form is not limited to the spigot fitting exemplified in the above embodiment. Any joining form is possible for the cap and the housing, such as joining end faces having similar outer shapes together with an adhesive. Steps may be formed on the outer circumferential surface of the joining portion of the cap and the housing, but from the viewpoint of preventing hair from getting caught and preventing hair from getting snagged, it is preferable that the outer circumferential surfaces of the cap and the housing are continuous without steps. (8) The arrangement of the base edge of the cap according to the present invention is not limited to the arrangement exemplified in the above embodiment. The base edge of the cap may be located generally closer to the front end than the front end of the plate, or it may be located generally closer to the base end than the front end of the plate. Furthermore, the base edge of the cap may be located only closer to the front end than the front end of the plate, with the edge between the side surface of the clamping portion and the clamping surface (the edge corresponding to edge 50F in the embodiment) being located closer to the front end of the plate, or only the edge between the side surface and the clamping surface, the edge on the clamping surface side, and at least one of the side surface edges may be located closer to the front end of the plate. (9) The arrangement of the edges on the base side of the cap according to the present invention that correspond to the side surfaces located in the width direction of the clamping portion (edges 50C, 50D, 50E in the embodiment) is not particularly limited. That is, the edges corresponding to the side surfaces of the clamping portion may be located not only on the clamping surface side, but also generally on the front edge side of the plate. Furthermore, the edges on the base side of the cap may be located on the front edge side of the plate only on specific surfaces of the clamping portion, such as only the clamping surface or only the side surfaces located in the width direction of the clamping portion. Moreover, on surfaces other than the side surfaces located in the width direction of the clamping portion, such as the outer surface of the clamping portion and the clamping surface, a portion of the edges on the base side of the cap may be located on the front edge side of the plate, and another portion may be located on the base side of the front edge side of the plate. (10) It is not essential that the cap according to the present invention has an inclined surface. The cap may have only one of the inclined surface on the outer side and the inclined surface on the side, or it may have neither inclined surface. (11) The distance between the leading edge of the plate according to the present invention and the tip of the clamping portion is not limited to the distance exemplified in the above embodiment. This distance is preferably 4 mm or more and 10 mm or less, more preferably 4.5 mm or more and 8 mm or less, and even more preferably 5 mm or more and 6 mm or less. Within these ranges, a sufficient distance is secured between the tip of the clamping portion that may come into contact with the scalp during use and the plate, thereby suppressing heat transfer from the plate to the tip of the clamping portion, while minimizing the area of ​​the portion on the leading edge of the clamping surface where the plate is not present, thereby achieving a good sensation of the clamping portion gripping the hair with fingers. (12) It is not essential that the hair iron according to the present invention includes a case member. If a case member is included, its configuration and other aspects are not limited to those exemplified in the above embodiment. [Explanation of Symbols]

[0061] 1… Hair iron 10A, 10B... Arm section 11... Base end (base end of the arm) 12... Tip (tip of the arm) 16… Housing 20...Holding part 20A…Pinching surface 30...Gripping part 40... Plate 40A... The leading edge of the plate 50... Cap 50A, 50B, 50C, 50D, 50E, 50F... The base edge of the cap 51... Inclined surface on the outer side of the cap 52... Inclined surface on the side of the cap in the width direction 60… Housing 90…Case components 91A...Through hole

Claims

1. A hair iron comprising a pair of arm portions that extend from the base to the tip and are connected at the base end, with the tip end being able to open and close, A clamping portion is provided at the tip of the aforementioned arm portion and capable of holding hair, A gripping portion is provided on the base end side of the arm portion and is used to grip hair when clamping it, It is equipped with, A hair iron in which the width of the clamping portion is set to be 0.3 times or more and 0.5 times or less the width of the gripping portion.

2. The clamping portion comprises a plate exposed to the clamping surface that clamps the hair, a housing that holds the plate, and a cap attached to the housing at the tip end. The base end edge of the cap is On the outer surface opposite to the clamping surface, it is located closer to the base end than the tip end of the plate. The hair iron according to claim 1, wherein at least between the side surface located in the width direction of the clamping portion and the clamping surface, it is located on the tip side of the tip edge of the plate.

3. The hair iron according to claim 2, wherein an inclined surface is formed on the outer surface of the cap opposite to the clamping surface, sloping toward the clamping surface from the base end toward the tip end.

4. The hair iron according to claim 2 or 3, wherein the side surface of the cap has an inclined surface that slopes toward the center in the width direction of the clamping portion from the base end toward the tip end.

5. The clamping portion is equipped with a case member that can be detachably placed over it. The hair iron according to claim 1, wherein the case member has through holes that penetrate to the inside and outside.

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